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70 Commits

Author SHA1 Message Date
a76yyyy
c7e34bdc11
Docs(locales): add chinese locale support (#2772) 2023-07-14 22:20:15 +08:00
Dreamacro
24186a488a Chore: update dependencies 2023-06-30 21:03:58 +08:00
Kr328
5212aaf445
Fix: process resolving for udp (#2806) 2023-06-25 09:19:06 +08:00
MoonStrider
e26bed43de
Change: replace std regex with regexp2 (#2802) 2023-06-21 17:06:29 +08:00
Dreamacro
700ceed194 Fix: proxy health check should check not alive proxy on lazy 2023-06-18 18:30:02 +08:00
Kr328
154cb1d1f0
Improve: alloc using make if alloc size > 65536 (#2796) 2023-06-18 11:19:35 +08:00
Kr328
295b0da0e5
Fix: should check originDst is nil (#2797) 2023-06-18 11:16:40 +08:00
Dreamacro
31fe77ee69 Chore: add alive for proxy api 2023-06-16 21:19:10 +08:00
Kr328
9177645a89
Fix: windows process panic (#2793) 2023-06-15 21:37:26 +08:00
Kr328
355eb491ad
Fix: windows process panic (#2791) 2023-06-15 17:51:55 +08:00
Terry Chan
18c666a1ab
Fix: aysnc exchange with new context (#2788) 2023-06-13 23:44:48 +08:00
Kr328
13d9e960f7
Refactor: refactor find process (#2781) 2023-06-13 23:25:32 +08:00
Dreamacro
289025c6ee Fix: filterable provider should be touch 2023-05-28 14:12:03 +08:00
Dreamacro
369f2735a0 Fix: linter fix 2023-05-28 13:52:17 +08:00
Yonas Yanfa
2b6dd2a909
Feature: add REDIRECT IPv6 support for FreeBSD. (#2768)
Upstream patch from FreeBSD ports which adds IPv6 support.
2023-05-25 21:13:42 +08:00
znley
ccd6d321cd
Feature: add loong64 build (#2762) 2023-05-24 09:44:43 +08:00
a76yyyy
4d66da2277
Chore: update wiki URL in issue_template (#2763) 2023-05-23 19:46:01 +08:00
Akariln
1ab615852e
Docs: fix some mistakes (#2761) 2023-05-21 21:26:10 +08:00
Birkhoff Lee
46bb6c38ff
Docs(shortcuts): add expr and starlark (#2759)
Signed-off-by: Birkhoff Lee <git@birkhoff.me>
2023-05-21 21:24:21 +08:00
Birkhoff Lee
c244229ffb
Docs(faq): add docs about amd64-v3 (#2752) 2023-05-21 21:23:35 +08:00
Birkhoff Lee
e8b2d0ecc8
Docs: fix previous/next page button (#2760)
Signed-off-by: Birkhoff Lee <git@birkhoff.me>
2023-05-21 21:22:52 +08:00
Birkhoff Lee
acec0f5c89
Docs(rules): update about no-resolve (#2758) 2023-05-21 21:22:12 +08:00
Birkhoff Lee
4655bd4da8
Docs(script-shortcuts): add expr engine (#2757) 2023-05-20 22:52:50 +08:00
Birkhoff Lee
6b17fd2595
Docs(rules): fix IPSET example (#2756) 2023-05-20 22:52:31 +08:00
Birkhoff Lee
cbcbd0e085
Docs(outbound): fix some typos (#2755) 2023-05-20 22:52:11 +08:00
Birkhoff Lee
75c0254703
Docs(ebpf): add tailscaled conflict (#2754) 2023-05-20 22:51:46 +08:00
Dreamacro
e02d556bf4 Chore: upgrade test deps 2023-05-19 22:10:26 +08:00
Dreamacro
d006b0f2b4 Chore: update dependencies 2023-05-19 21:55:04 +08:00
Birkhoff Lee
d9753efe23
Docs: link logo to public directory (#2748)
Signed-off-by: Birkhoff Lee <git@birkhoff.me>
2023-05-19 21:14:03 +08:00
Birkhoff Lee
6ecd96e5ac
Docs: fix logo url and update README (#2747)
Signed-off-by: Birkhoff Lee <git@birkhoff.me>
2023-05-17 21:07:23 +08:00
Dreamacro
fdb1456c69 Fix: docs build path 2023-05-15 22:35:03 +08:00
Dreamacro
7d9723662c Chore: upgrade actions/deploy-pages version 2023-05-15 21:55:52 +08:00
Birkhoff Lee
ca42ca2ca8
Docs: new documentation site (#2723)
This commit adds a VitePress build to the main repository,
aiming to ditch GitHub Wiki. Moving further, we're going to
host our own documentation site eithor on GitHub Pages or
something alike.
2023-05-15 21:47:01 +08:00
江湖风轻
10dcb7a3ad
Fix: PacketConn's internal remote address is overwritten (#2727)
When using vmess + fake-ip, after receiving the first UDP response,
PacketConn's internal address will be rewritten to fake-ip, causing all
subsequent sending operations to return "ErrUDPRemoteAddrMismatch".

Signed-off-by: Hackerl <490021209@qq.com>
2023-05-11 18:42:24 +08:00
Dreamacro
4c3c64a34a Fix: potential token time attack 2023-05-06 14:51:28 +08:00
KaitoHH
257fcef0b8
Fix: adjust DNS TTL values based on minimum value (#2706)
This commit adds an updated function that adjusts
the TTL values of DNS records are based on the minimum TTL
the value found in the records list so that all records share the
same TTL value. This ensures consistency in the cache
expiry time for all records to prevent caching issues.
2023-04-30 12:18:20 +08:00
Georeth Chow
7f1b50f4a7
Chore: Fix ISSUE_TEMPLATE (DEBUG -> debug) (#2711) 2023-04-28 17:23:00 +08:00
Birkhoff Lee
4f5e74dad9
Chore: update bug_report.yml (#2708)
Signed-off-by: Birkhoff Lee <git@birkhoff.me>
2023-04-27 18:19:31 +08:00
yaling888
48b77b2847
Fix: socks4 server handshake (#2700) 2023-04-25 20:16:11 +08:00
major1201
6eee226965
Feature: support IPSET rule (#2693) 2023-04-22 20:07:47 +08:00
Dreamacro
765982e86a Chore: add new lint-fix for Makefile 2023-04-22 20:03:57 +08:00
yaling888
c5fe5235f7
Feature: add provider proxies API (#2668) 2023-04-22 19:16:51 +08:00
Dreamacro
63770b328f Fix: direct require protobytes 2023-04-21 21:13:13 +08:00
Dreamacro
85f4cb23fc Fix: put correctly pool 2023-04-20 11:07:21 +08:00
Xiaochao Dong
d71324069d
Feature: support basic authentication for DoH (#2684) 2023-04-19 11:30:57 +08:00
Dreamacro
b7aade5e11 Chore: use protobytes replace most of bytes.Buffer 2023-04-17 14:08:39 +08:00
M4rtin Hsu
df61a586c9
Fix: potential vulnerability in http provider (#2680) 2023-04-16 20:14:36 +08:00
Dreamacro
8e05fbfd6d Chore: update dependencies 2023-04-13 20:51:13 +08:00
yaling888
9b2b7c662d
Feature: add filter option to proxy group (#2518) 2023-04-08 19:23:19 +08:00
yaling888
20a521f02d
Feature: bind socket to interface by native API on Windows (#2662) 2023-04-08 19:20:14 +08:00
yaling888
95bbfe3945
Fix: should always drop packet when handle UDP packet (#2659) 2023-04-05 14:05:23 +08:00
Dreamacro
4cd4912749 Chore: more parse proxy group error detail 2023-04-04 16:50:41 +08:00
Dreamacro
5045ca4574 Chore: add some linters and clean up the code 2023-04-04 14:53:59 +08:00
RommHui
a7252a1576
Feature: allow http outbound to set custom headers (#2647) 2023-03-31 20:33:41 +08:00
包布丁
7e2974f02f
Fix: return pooled buffer when simple-obfs tls read error (#2643) 2023-03-26 16:22:23 +08:00
Jiahao Lu
8f9b39c62e
Fix: potential panic in putMsgToCache (#2634)
When the upstream DNS server returns a message that contains no
questions (i.e. QDCOUNT == 0), `putMsgToCache` will trigger an
out-of-range panic.

Issue: #2524
Comment: https://github.com/Dreamacro/clash/issues/2524#issuecomment-1477477601
2023-03-21 19:36:49 +08:00
Dreamacro
d808576f98 Chore: use the number of cpus in parallel make 2023-03-18 20:19:34 +08:00
Dreamacro
fcbe2f06cc Chore: update docker workflow 2023-03-18 19:57:31 +08:00
Dreamacro
148ebccb60 Fix: ignore meanDelay error 2023-03-17 16:35:50 +08:00
Jeff An
3b1d319820
Feature: add support for dns search domains (#2597) 2023-03-17 15:53:06 +08:00
Dreamacro
ff2f2b667b Chore: make test linter happy 2023-03-14 21:24:15 +08:00
Dreamacro
e5a2dbd9b5 Chore: update uuid to v5 2023-03-14 21:18:09 +08:00
Dreamacro
4d14dd65fa Chore: update dependencies 2023-03-14 21:08:09 +08:00
Dave Yu
4ffc999617
Fix: modify local ip to pass all test (#2595) 2023-03-09 10:44:36 +08:00
Dreamacro
71f8f0667f Fix: fakeip 4in 6 unmap 2023-03-04 16:27:36 +08:00
Dreamacro
f78a7cb2cb Feature: add meanDelay on URLTest 2023-02-28 13:28:42 +08:00
Dreamacro
8173d6681b Migration: go1.20 2023-02-16 21:43:40 +08:00
Dreamacro
fbf2f26516 Chore: update bug report template 2023-02-03 21:19:06 +08:00
Dreamacro
9af6d498e7 Change: remove redir-host as config 2023-02-01 15:19:36 +08:00
bobo liu
81b1e9f931
Feature: support vmess 'zero' security (#2513) 2023-01-30 14:14:42 +08:00
167 changed files with 7516 additions and 1401 deletions

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@ -1,76 +0,0 @@
name: Bug report
description: Create a report to help us improve
title: "[Bug] "
body:
- type: checkboxes
id: ensure
attributes:
label: Verify steps
description: "
在提交之前,请确认
Please verify that you've followed these steps
"
options:
- label: "
如果你可以自己 debug 并解决的话,提交 PR 吧
Is this something you can **debug and fix**? Send a pull request! Bug fixes and documentation fixes are welcome.
"
required: true
- label: "
我已经在 [Issue Tracker](……/) 中找过我要提出的问题
I have searched on the [issue tracker](……/) for a related issue.
"
required: true
- label: "
我已经使用 dev 分支版本测试过,问题依旧存在
I have tested using the dev branch, and the issue still exists.
"
required: true
- label: "
我已经仔细看过 [Documentation](https://github.com/Dreamacro/clash/wiki/) 并无法自行解决问题
I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) and was unable to solve the issue.
"
required: true
- label: "
这是 Clash 核心的问题,并非我所使用的 Clash 衍生版本(如 OpenClash、KoolClash 等)的特定问题
This is an issue of the Clash core *per se*, not to the derivatives of Clash, like OpenClash or KoolClash.
"
required: true
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attributes:
label: Clash version
validations:
required: true
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attributes:
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multiple: true
options:
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- Windows
- Linux
- OpenBSD/FreeBSD
- type: textarea
attributes:
render: yaml
label: "Clash config"
description: "
在下方附上 Clash core 配置文件,请确保配置文件中没有敏感信息(比如:服务器地址,密码,端口等)
Paste the Clash core configuration file below, please make sure that there is no sensitive information in the configuration file (e.g., server address/url, password, port)
"
validations:
required: true
- type: textarea
attributes:
render: shell
label: Clash log
description: "
在下方附上 Clash Core 的日志log level 使用 DEBUG
Paste the Clash core log below with the log level set to `DEBUG`.
"
- type: textarea
attributes:
label: Description
validations:
required: true

124
.github/ISSUE_TEMPLATE/bug_report_en.yml vendored Normal file
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@ -0,0 +1,124 @@
name: (English) Report a bug of the Clash core
description: Create a bug report to help us improve
labels:
- bug
title: "[Bug] <issue title>"
body:
- type: markdown
attributes:
value: "## Welcome to the official Clash open-source community"
- type: markdown
attributes:
value: |
Thank you for taking the time to report an issue with the Clash core.
Prior to submitting this issue, please read and follow the guidelines below to ensure that your issue can be resolved as quickly as possible. Options marked with an asterisk (*) are required, while others are optional. If the information you provide does not comply with the requirements, the maintainers may not respond and may directly close the issue.
If you can debug and fix the issue yourself, we welcome you to submit a pull request to merge your changes upstream.
- type: checkboxes
id: ensure
attributes:
label: Prerequisites
description: "If any of the following options do not apply, please do not submit this issue as we will close it"
options:
- label: "I understand that this is the official open-source version of the Clash core, **only providing support for the open-source version or Premium version**"
required: true
- label: "I am submitting an issue with the Clash core, not Clash.Meta / OpenClash / ClashX / Clash For Windows or any other derivative version"
required: true
- label: "I am using the latest version of the Clash or Clash Premium core **in this repository**"
required: true
- label: "I have searched at the [Issue Tracker](……/) **and have not found any related issues**"
required: true
- label: "I have read the [official Wiki](https://dreamacro.github.io/clash/) **and was unable to solve the issue**"
required: true
- label: "(required for Premium core) I've tried the `dev` branch and the issue still exists"
required: false
- type: markdown
attributes:
value: "## Environment"
- type: markdown
attributes:
value: |
Please provide the following information to help us locate the issue.
The issue might be closed if there's not enough information provided.
- type: input
attributes:
label: Version
description: "Run `clash -v` or look at the bottom-left corner of the Clash Dashboard to find out"
validations:
required: true
- type: dropdown
id: os
attributes:
label: Operating System
description: "Select all operating systems that apply to this issue"
multiple: true
options:
- Linux
- Windows
- macOS (darwin)
- Android
- OpenBSD / FreeBSD
- type: dropdown
id: arch
attributes:
label: Architecture
description: "Select all architectures that apply to this issue"
multiple: true
options:
- amd64
- amd64-v3
- arm64
- "386"
- armv5
- armv6
- armv7
- mips-softfloat
- mips-hardfloat
- mipsle-softfloat
- mipsle-hardfloat
- mips64
- mips64le
- riscv64
- type: markdown
attributes:
value: "## Clash related information"
- type: markdown
attributes:
value: |
Please provide relevant information about your Clash instance here. If you
do not provide enough information, the issue may be closed.
- type: textarea
attributes:
render: YAML
label: Configuration File
placeholder: "Ensure that there is no sensitive information (such as server addresses, passwords, or ports) in the configuration file, and provide the minimum reproducible configuration. Do not post configurations with thousands of lines."
validations:
required: true
- type: textarea
attributes:
render: Text
label: Log
placeholder: "Please attach the corresponding core outout (setting `log-level: debug` in the configuration provides debugging information)."
- type: textarea
attributes:
label: Description
placeholder: "Please describe your issue in detail here to help us understand (supports Markdown syntax)."
validations:
required: true
- type: textarea
attributes:
label: Reproduction Steps
placeholder: "Please provide the specific steps to reproduce the issue here (supports Markdown syntax)."

121
.github/ISSUE_TEMPLATE/bug_report_zh.yml vendored Normal file
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@ -0,0 +1,121 @@
name: (中文)提交 Clash 核心的问题
description: 如果 Clash 核心运作不符合预期,在这里提交问题
labels:
- bug
title: "[Bug] <问题标题>"
body:
- type: markdown
attributes:
value: "## 欢迎来到 Clash 官方开源社区!"
- type: markdown
attributes:
value: |
感谢你拨冗提交 Clash 内核的问题。在提交之前,请仔细阅读并遵守以下指引,以确保你的问题能够被尽快解决。
带有星号(*)的选项为必填,其他可选填。**如果你填写的资料不符合规范,维护者可能不予回复,并直接关闭这个 issue。**
如果你可以自行 debug 并且修正,我们随时欢迎你提交 Pull Request将你的修改合并到上游。
- type: checkboxes
id: ensure
attributes:
label: 先决条件
description: "若以下任意选项不适用,请勿提交这个 issue因为我们会把它关闭"
options:
- label: "我了解这里是官方开源版 Clash 核心仓库,**只提供开源版或者 Premium 内核的支持**"
required: true
- label: "我要提交 Clash 核心的问题,并非 Clash.Meta / OpenClash / ClashX / Clash For Windows 或其他任何衍生版本的问题"
required: true
- label: "我使用的是**本仓库**最新版本的 Clash 或 Clash Premium 内核"
required: true
- label: "我已经在 [Issue Tracker](……/) 中找过我要提出的 bug**并且没有找到相关问题**"
required: true
- label: "我已经仔细阅读 [官方 Wiki](https://dreamacro.github.io/clash/) 并无法自行解决问题"
required: true
- label: "(非 Premium 内核必填)我已经使用 dev 分支版本测试过,问题依旧存在"
required: false
- type: markdown
attributes:
value: "## 系统环境"
- type: markdown
attributes:
value: |
请附上这个问题适用的环境,以帮助我们迅速定位问题并解决。若你提供的信息不足,我们将关闭
这个 issue 并要求你提供更多信息。
- type: input
attributes:
label: 版本
description: "运行 `clash -v` 或者查看 Clash Dashboard 的左下角来找到你现在使用的版本"
validations:
required: true
- type: dropdown
id: os
attributes:
label: 适用的作业系统
description: "勾选所有适用于这个 issue 的系统"
multiple: true
options:
- Linux
- Windows
- macOS (darwin)
- Android
- OpenBSD / FreeBSD
- type: dropdown
id: arch
attributes:
label: 适用的硬件架构
description: "勾选所有适用于这个 issue 的架构"
multiple: true
options:
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- amd64-v3
- arm64
- "386"
- armv5
- armv6
- armv7
- mips-softfloat
- mips-hardfloat
- mipsle-softfloat
- mipsle-hardfloat
- mips64
- mips64le
- riscv64
- type: markdown
attributes:
value: "## Clash 相关信息"
- type: markdown
attributes:
value: |
请附上与这个问题直接相关的相应信息,以帮助我们迅速定位问题并解决。
若你提供的信息不足,我们将关闭这个 issue 并要求你提供更多信息。
- type: textarea
attributes:
render: YAML
label: "配置文件"
placeholder: "确保配置文件中没有敏感信息(如:服务器地址、密码、端口),并且提供最小可复现配置,严禁贴上上千行的配置"
validations:
required: true
- type: textarea
attributes:
render: Text
label: 日志输出
placeholder: "在这里附上问题对应的内核日志(在配置中设置 `log-level: debug` 可获得调试信息)"
- type: textarea
attributes:
label: 问题描述
placeholder: "在这里详细叙述你的问题,帮助我们理解(支持 Markdown 语法)"
validations:
required: true
- type: textarea
attributes:
label: 复现步骤
placeholder: "在这里提供问题的具体重现步骤(支持 Markdown 语法)"

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@ -1,6 +1,9 @@
blank_issues_enabled: false blank_issues_enabled: false
contact_links: contact_links:
- name: Get help in GitHub Discussions - name: (中文)阅读 Wiki
url: https://github.com/Dreamacro/clash/discussions url: https://dreamacro.github.io/clash/zh_CN/
about: Have a question? Not sure if your issue affects everyone reproducibly? The quickest way to get help is on Clash's GitHub Discussions! about: 如果你是新手,或者想要了解 Clash 的更多信息,请阅读我们撰写的官方 Wiki
- name: (English) Read our Wiki page
url: https://dreamacro.github.io/clash/
about: If you are new to Clash, or want to know more about Clash, please read our Wiki page

View File

@ -1,36 +0,0 @@
name: Feature request
description: Suggest an idea for this project
title: "[Feature] "
body:
- type: checkboxes
id: ensure
attributes:
label: Verify steps
description: "
在提交之前,请确认
Please verify that you've followed these steps
"
options:
- label: "
我已经在 [Issue Tracker](……/) 中找过我要提出的请求
I have searched on the [issue tracker](……/) for a related feature request.
"
required: true
- label: "
我已经仔细看过 [Documentation](https://github.com/Dreamacro/clash/wiki/) 并无法自行解决问题
I have read the [documentation](https://github.com/Dreamacro/clash/wiki/) and was unable to solve the issue.
"
required: true
- type: textarea
attributes:
label: Description
description: 请详细、清晰地表达你要提出的论述,例如这个问题如何影响到你?你想实现什么功能?目前 Clash Core 的行为是什麽?
validations:
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description: "
此项非必须,但是如果你有想法的话欢迎提出。
Not obligatory, but suggest a fix/reason for the bug, or ideas how to implement the addition or change
"

View File

@ -0,0 +1,43 @@
name: (English) Feature request
description: Suggest an idea for this project
labels:
- enhancement
title: "[Feature] <title>"
body:
- type: markdown
attributes:
value: "## Welcome to the official Clash open-source community"
- type: markdown
attributes:
value: |
Thank you for taking the time to make a suggestion to the Clash core.
Prior to submitting this issue, please read and follow the guidelines below to ensure that your issue can be resolved as quickly as possible. Options marked with an asterisk (*) are required, while others are optional. If the information you provide does not comply with the requirements, the maintainers may not respond and may directly close the issue.
If you can implement your idea by yourself, we welcome you to submit a pull request to merge your changes upstream.
- type: checkboxes
id: ensure
attributes:
label: Prerequisites
description: "If any of the following options do not apply, please do not submit this issue as we will close it"
options:
- label: "I understand that this is the official open-source version of the Clash core, **only providing support for the open-source version or Premium version**"
required: true
- label: "I have looked for my idea in [the issue tracker](https://github.com/Dreamacro/clash/issues?q=is%3Aissue+label%3Aenhancement), **and found none of which being related**"
required: true
- label: "I have read the [official Wiki](https://dreamacro.github.io/clash/)"
required: true
- type: textarea
attributes:
label: Description
placeholder: "Please explain your suggestions in detail and in a clear manner. For instance, how does this issue impact you? What specific functionality are you hoping to achieve? Also, let us know what Clash Core is currently doing in terms of your suggestion, and what you would like it to do instead."
validations:
required: true
- type: textarea
attributes:
label: Possible Solution
placeholder: "Do you have any ideas on the implementation details?"

View File

@ -0,0 +1,41 @@
name: (中文)建议一个新功能
description: 在这里提供一个的想法或建议
labels:
- enhancement
title: "[Feature] <标题>"
body:
- type: markdown
attributes:
value: "## 欢迎来到 Clash 官方开源社区!"
- type: markdown
attributes:
value: |
感谢你拨冗为 Clash 内核提供建议。在提交之前,请仔细阅读并遵守以下指引,以确保你的建议能够被顺利采纳。
带有星号(*)的选项为必填,其他可选填。**如果你填写的资料不符合规范,维护者可能不予回复,并直接关闭这个 issue。**
如果你可以自行添加这个功能,我们随时欢迎你提交 Pull Request并将你的修改合并到上游。
- type: checkboxes
id: ensure
attributes:
label: 先决条件
description: "若以下任意选项不适用,请勿提交这个 issue因为我们会把它关闭"
options:
- label: "我了解这里是 Clash 官方仓库,并非 Clash.Meta / OpenClash / ClashX / Clash For Windows 或其他任何衍生版本"
required: true
- label: "我已经在[这里](https://github.com/Dreamacro/clash/issues?q=is%3Aissue+label%3Aenhancement)找过我要提出的建议,**并且没有找到相关问题**"
required: true
- label: "我已经仔细阅读 [官方 Wiki](https://dreamacro.github.io/clash/) "
required: true
- type: textarea
attributes:
label: 描述
placeholder: 请详细、清晰地表达你要提出的论述,例如这个问题如何影响到你?你想实现什么功能?目前 Clash Core 的行为是什么?
validations:
required: true
- type: textarea
attributes:
label: 可能的解决方案
placeholder: 此项非必须,但是如果你有想法的话欢迎提出。

42
.github/workflows/deploy-docs.yml vendored Normal file
View File

@ -0,0 +1,42 @@
name: Deploy
on:
workflow_dispatch: {}
push:
branches:
- master
jobs:
deploy:
runs-on: ubuntu-latest
strategy:
matrix:
node-version: [20]
permissions:
pages: write
id-token: write
environment:
name: github-pages
url: ${{ steps.deployment.outputs.page_url }}
steps:
- uses: actions/checkout@v3
with:
fetch-depth: 0
- uses: pnpm/action-setup@v2
with:
version: latest
- name: Use Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v3
with:
node-version: ${{ matrix.node-version }}
- name: Install dependencies
working-directory: docs
run: pnpm install --frozen-lockfile=false
- name: Build
working-directory: docs
run: pnpm run docs:build
- uses: actions/configure-pages@v2
- uses: actions/upload-pages-artifact@v1
with:
path: docs/.vitepress/dist
- name: Deploy
id: deployment
uses: actions/deploy-pages@v2

View File

@ -43,7 +43,7 @@ jobs:
- name: Build dev branch and push - name: Build dev branch and push
if: github.ref == 'refs/heads/dev' if: github.ref == 'refs/heads/dev'
uses: docker/build-push-action@v3 uses: docker/build-push-action@v4
with: with:
context: . context: .
platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64 platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64
@ -70,7 +70,7 @@ jobs:
- name: Build release and push - name: Build release and push
if: startsWith(github.ref, 'refs/tags/') if: startsWith(github.ref, 'refs/tags/')
uses: docker/build-push-action@v3 uses: docker/build-push-action@v4
with: with:
context: . context: .
platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64 platforms: linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64

View File

@ -7,10 +7,10 @@ jobs:
- uses: actions/checkout@v3 - uses: actions/checkout@v3
- name: Setup Go - name: Setup Go
uses: actions/setup-go@v3 uses: actions/setup-go@v4
with: with:
check-latest: true check-latest: true
go-version: '1.19' go-version: '1.20'
- name: golangci-lint - name: golangci-lint
uses: golangci/golangci-lint-action@v3 uses: golangci/golangci-lint-action@v3

View File

@ -5,16 +5,16 @@ jobs:
runs-on: ubuntu-latest runs-on: ubuntu-latest
steps: steps:
- name: Setup Go - name: Setup Go
uses: actions/setup-go@v3 uses: actions/setup-go@v4
with: with:
check-latest: true check-latest: true
go-version: '1.19' go-version: '1.20'
- name: Check out code into the Go module directory - name: Check out code into the Go module directory
uses: actions/checkout@v3 uses: actions/checkout@v3
- name: Cache go module - name: Cache go module
uses: actions/cache@v2 uses: actions/cache@v3
with: with:
path: | path: |
~/go/pkg/mod ~/go/pkg/mod
@ -32,7 +32,7 @@ jobs:
env: env:
NAME: clash NAME: clash
BINDIR: bin BINDIR: bin
run: make -j releases run: make -j $(go run ./test/main.go) releases
- name: Upload Release - name: Upload Release
uses: softprops/action-gh-release@v1 uses: softprops/action-gh-release@v1

View File

@ -11,7 +11,7 @@ jobs:
runs-on: ubuntu-latest runs-on: ubuntu-latest
steps: steps:
- uses: actions/stale@v5 - uses: actions/stale@v7
with: with:
stale-issue-message: 'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 5 days' stale-issue-message: 'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 5 days'
days-before-stale: 60 days-before-stale: 60

11
.gitignore vendored
View File

@ -23,3 +23,14 @@ vendor
# test suite # test suite
test/config/cache* test/config/cache*
# docs site generator
node_modules
package-lock.json
pnpm-lock.yaml
# docs site cache
docs/.vitepress/cache
# docs site build files
docs/.vitepress/dist

View File

@ -1,10 +1,16 @@
linters: linters:
disable-all: true disable-all: true
enable: enable:
- gofumpt
- staticcheck
- govet
- gci - gci
- gofumpt
- gosimple
- govet
- ineffassign
- misspell
- staticcheck
- unconvert
- unused
- usestdlibvars
linters-settings: linters-settings:
gci: gci:
@ -14,4 +20,4 @@ linters-settings:
- prefix(github.com/Dreamacro/clash) - prefix(github.com/Dreamacro/clash)
- default - default
staticcheck: staticcheck:
go: '1.19' go: '1.20'

View File

@ -24,6 +24,7 @@ PLATFORM_LIST = \
linux-mips64 \ linux-mips64 \
linux-mips64le \ linux-mips64le \
linux-riscv64 \ linux-riscv64 \
linux-loong64 \
freebsd-386 \ freebsd-386 \
freebsd-amd64 \ freebsd-amd64 \
freebsd-amd64-v3 \ freebsd-amd64-v3 \
@ -89,6 +90,9 @@ linux-mips64le:
linux-riscv64: linux-riscv64:
GOARCH=riscv64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ GOARCH=riscv64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
linux-loong64:
GOARCH=loong64 GOOS=linux $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
freebsd-386: freebsd-386:
GOARCH=386 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@ GOARCH=386 GOOS=freebsd $(GOBUILD) -o $(BINDIR)/$(NAME)-$@
@ -130,12 +134,15 @@ all-arch: $(PLATFORM_LIST) $(WINDOWS_ARCH_LIST)
releases: $(gz_releases) $(zip_releases) releases: $(gz_releases) $(zip_releases)
lint: LINT_OS_LIST := darwin windows linux freebsd openbsd
GOOS=darwin golangci-lint run ./...
GOOS=windows golangci-lint run ./... lint: $(foreach os,$(LINT_OS_LIST),$(os)-lint)
GOOS=linux golangci-lint run ./... %-lint:
GOOS=freebsd golangci-lint run ./... GOOS=$* golangci-lint run ./...
GOOS=openbsd golangci-lint run ./...
lint-fix: $(foreach os,$(LINT_OS_LIST),$(os)-lint-fix)
%-lint-fix:
GOOS=$* golangci-lint run --fix ./...
clean: clean:
rm $(BINDIR)/* rm $(BINDIR)/*

View File

@ -23,35 +23,28 @@
## Features ## Features
- Local HTTP/HTTPS/SOCKS server with authentication support This is a general overview of the features that comes with Clash.
- Shadowsocks(R), VMess, Trojan, Snell, SOCKS5, HTTP(S) outbound support
- Built-in [fake-ip](https://www.rfc-editor.org/rfc/rfc3089) DNS server that aims to minimize DNS pollution attack impact. DoH/DoT upstream supported.
- Rules based off domains, GEOIP, IP-CIDR or process names to route packets to different destinations
- Proxy groups allow users to implement powerful rules. Supports automatic fallback, load balancing or auto select proxy based off latency
- Remote providers, allowing users to get proxy lists remotely instead of hardcoding in config
- Transparent proxy: Redirect TCP and TProxy TCP/UDP with automatic route table/rule management
- Hot-reload via the comprehensive HTTP RESTful API controller
## Premium - Inbound: HTTP, HTTPS, SOCKS5 server, TUN device
- Outbound: Shadowsocks(R), VMess, Trojan, Snell, SOCKS5, HTTP(S), Wireguard
- Rule-based Routing: dynamic scripting, domain, IP addresses, process name and more
- Fake-IP DNS: minimises impact on DNS pollution and improves network performance
- Transparent Proxy: Redirect TCP and TProxy TCP/UDP with automatic route table/rule management
- Proxy Groups: automatic fallback, load balancing or latency testing
- Remote Providers: load remote proxy lists dynamically
- RESTful API: update configuration in-place via a comprehensive API
Premium core is proprietary. You can find their release notes and pre-built binaries [here](https://github.com/Dreamacro/clash/releases/tag/premium). *Some of the features may only be available in the [Premium core](https://dreamacro.github.io/clash/premium/introduction.html).*
- gvisor/system stack TUN device on macOS, Linux and Windows ([ref](https://github.com/Dreamacro/clash/wiki/Clash-Premium-Features#tun-device)) ## Documentation
- Policy routing with [Scripts](https://github.com/Dreamacro/clash/wiki/Clash-Premium-Features#script)
- Load your rules with [Rule Providers](https://github.com/Dreamacro/clash/wiki/Clash-Premium-Features#rule-providers)
- Monitor Clash usage with a built-in profiling engine. ([Dreamacro/clash-tracing](https://github.com/Dreamacro/clash-tracing))
## Getting Started You can find the latest documentation at [https://dreamacro.github.io/clash/](https://dreamacro.github.io/clash/).
Documentations are available at [GitHub Wiki](https://github.com/Dreamacro/clash/wiki).
## Development
If you want to build a Go application that uses Clash as a library, check out the [GitHub Wiki](https://github.com/Dreamacro/clash/wiki/Using-Clash-in-your-Golang-program).
## Credits ## Credits
* [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2) - [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
* [v2ray/v2ray-core](https://github.com/v2ray/v2ray-core) - [v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
* [WireGuard/wireguard-go](https://github.com/WireGuard/wireguard-go) - [WireGuard/wireguard-go](https://github.com/WireGuard/wireguard-go)
## License ## License

View File

@ -94,6 +94,7 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
mapping := map[string]any{} mapping := map[string]any{}
json.Unmarshal(inner, &mapping) json.Unmarshal(inner, &mapping)
mapping["history"] = p.DelayHistory() mapping["history"] = p.DelayHistory()
mapping["alive"] = p.Alive()
mapping["name"] = p.Name() mapping["name"] = p.Name()
mapping["udp"] = p.SupportUDP() mapping["udp"] = p.SupportUDP()
return json.Marshal(mapping) return json.Marshal(mapping)
@ -101,12 +102,13 @@ func (p *Proxy) MarshalJSON() ([]byte, error) {
// URLTest get the delay for the specified URL // URLTest get the delay for the specified URL
// implements C.Proxy // implements C.Proxy
func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) { func (p *Proxy) URLTest(ctx context.Context, url string) (delay, meanDelay uint16, err error) {
defer func() { defer func() {
p.alive.Store(err == nil) p.alive.Store(err == nil)
record := C.DelayHistory{Time: time.Now()} record := C.DelayHistory{Time: time.Now()}
if err == nil { if err == nil {
record.Delay = t record.Delay = delay
record.MeanDelay = meanDelay
} }
p.history.Put(record) p.history.Put(record)
if p.history.Len() > 10 { if p.history.Len() > 10 {
@ -156,7 +158,16 @@ func (p *Proxy) URLTest(ctx context.Context, url string) (t uint16, err error) {
return return
} }
resp.Body.Close() resp.Body.Close()
t = uint16(time.Since(start) / time.Millisecond) delay = uint16(time.Since(start) / time.Millisecond)
resp, err = client.Do(req)
if err != nil {
// ignore error because some server will hijack the connection and close immediately
return delay, 0, nil
}
resp.Body.Close()
meanDelay = uint16(time.Since(start) / time.Millisecond / 2)
return return
} }

View File

@ -2,6 +2,7 @@ package inbound
import ( import (
"net" "net"
"net/netip"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/context" "github.com/Dreamacro/clash/context"
@ -9,7 +10,7 @@ import (
) )
// NewHTTP receive normal http request and return HTTPContext // NewHTTP receive normal http request and return HTTPContext
func NewHTTP(target socks5.Addr, source net.Addr, conn net.Conn) *context.ConnContext { func NewHTTP(target socks5.Addr, source net.Addr, originTarget net.Addr, conn net.Conn) *context.ConnContext {
metadata := parseSocksAddr(target) metadata := parseSocksAddr(target)
metadata.NetWork = C.TCP metadata.NetWork = C.TCP
metadata.Type = C.HTTP metadata.Type = C.HTTP
@ -17,5 +18,10 @@ func NewHTTP(target socks5.Addr, source net.Addr, conn net.Conn) *context.ConnCo
metadata.SrcIP = ip metadata.SrcIP = ip
metadata.SrcPort = port metadata.SrcPort = port
} }
if originTarget != nil {
if addrPort, err := netip.ParseAddrPort(originTarget.String()); err == nil {
metadata.OriginDst = addrPort
}
}
return context.NewConnContext(conn, metadata) return context.NewConnContext(conn, metadata)
} }

View File

@ -3,6 +3,7 @@ package inbound
import ( import (
"net" "net"
"net/http" "net/http"
"net/netip"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/context" "github.com/Dreamacro/clash/context"
@ -16,5 +17,8 @@ func NewHTTPS(request *http.Request, conn net.Conn) *context.ConnContext {
metadata.SrcIP = ip metadata.SrcIP = ip
metadata.SrcPort = port metadata.SrcPort = port
} }
if addrPort, err := netip.ParseAddrPort(conn.LocalAddr().String()); err == nil {
metadata.OriginDst = addrPort
}
return context.NewConnContext(conn, metadata) return context.NewConnContext(conn, metadata)
} }

View File

@ -1,6 +1,9 @@
package inbound package inbound
import ( import (
"net"
"net/netip"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/transport/socks5" "github.com/Dreamacro/clash/transport/socks5"
) )
@ -17,7 +20,7 @@ func (s *PacketAdapter) Metadata() *C.Metadata {
} }
// NewPacket is PacketAdapter generator // NewPacket is PacketAdapter generator
func NewPacket(target socks5.Addr, packet C.UDPPacket, source C.Type) *PacketAdapter { func NewPacket(target socks5.Addr, originTarget net.Addr, packet C.UDPPacket, source C.Type) *PacketAdapter {
metadata := parseSocksAddr(target) metadata := parseSocksAddr(target)
metadata.NetWork = C.UDP metadata.NetWork = C.UDP
metadata.Type = source metadata.Type = source
@ -25,7 +28,11 @@ func NewPacket(target socks5.Addr, packet C.UDPPacket, source C.Type) *PacketAda
metadata.SrcIP = ip metadata.SrcIP = ip
metadata.SrcPort = port metadata.SrcPort = port
} }
if originTarget != nil {
if addrPort, err := netip.ParseAddrPort(originTarget.String()); err == nil {
metadata.OriginDst = addrPort
}
}
return &PacketAdapter{ return &PacketAdapter{
UDPPacket: packet, UDPPacket: packet,
metadata: metadata, metadata: metadata,

View File

@ -2,6 +2,7 @@ package inbound
import ( import (
"net" "net"
"net/netip"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/context" "github.com/Dreamacro/clash/context"
@ -17,6 +18,8 @@ func NewSocket(target socks5.Addr, conn net.Conn, source C.Type) *context.ConnCo
metadata.SrcIP = ip metadata.SrcIP = ip
metadata.SrcPort = port metadata.SrcPort = port
} }
if addrPort, err := netip.ParseAddrPort(conn.LocalAddr().String()); err == nil {
metadata.OriginDst = addrPort
}
return context.NewConnContext(conn, metadata) return context.NewConnContext(conn, metadata)
} }

View File

@ -22,6 +22,7 @@ type Http struct {
user string user string
pass string pass string
tlsConfig *tls.Config tlsConfig *tls.Config
Headers http.Header
} }
type HttpOption struct { type HttpOption struct {
@ -34,6 +35,7 @@ type HttpOption struct {
TLS bool `proxy:"tls,omitempty"` TLS bool `proxy:"tls,omitempty"`
SNI string `proxy:"sni,omitempty"` SNI string `proxy:"sni,omitempty"`
SkipCertVerify bool `proxy:"skip-cert-verify,omitempty"` SkipCertVerify bool `proxy:"skip-cert-verify,omitempty"`
Headers map[string]string `proxy:"headers,omitempty"`
} }
// StreamConn implements C.ProxyAdapter // StreamConn implements C.ProxyAdapter
@ -83,11 +85,11 @@ func (h *Http) shakeHand(metadata *C.Metadata, rw io.ReadWriter) error {
Host: addr, Host: addr,
}, },
Host: addr, Host: addr,
Header: http.Header{ Header: h.Headers.Clone(),
"Proxy-Connection": []string{"Keep-Alive"},
},
} }
req.Header.Add("Proxy-Connection", "Keep-Alive")
if h.user != "" && h.pass != "" { if h.user != "" && h.pass != "" {
auth := h.user + ":" + h.pass auth := h.user + ":" + h.pass
req.Header.Add("Proxy-Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(auth))) req.Header.Add("Proxy-Authorization", "Basic "+base64.StdEncoding.EncodeToString([]byte(auth)))
@ -134,6 +136,11 @@ func NewHttp(option HttpOption) *Http {
} }
} }
headers := http.Header{}
for name, value := range option.Headers {
headers.Add(name, value)
}
return &Http{ return &Http{
Base: &Base{ Base: &Base{
name: option.Name, name: option.Name,
@ -145,5 +152,6 @@ func NewHttp(option HttpOption) *Http {
user: option.UserName, user: option.UserName,
pass: option.Password, pass: option.Password,
tlsConfig: tlsConfig, tlsConfig: tlsConfig,
Headers: headers,
} }
} }

View File

@ -1,7 +1,6 @@
package outbound package outbound
import ( import (
"bytes"
"net" "net"
"strconv" "strconv"
"time" "time"
@ -9,6 +8,8 @@ import (
"github.com/Dreamacro/clash/component/resolver" "github.com/Dreamacro/clash/component/resolver"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/transport/socks5" "github.com/Dreamacro/clash/transport/socks5"
"github.com/Dreamacro/protobytes"
) )
func tcpKeepAlive(c net.Conn) { func tcpKeepAlive(c net.Conn) {
@ -19,24 +20,24 @@ func tcpKeepAlive(c net.Conn) {
} }
func serializesSocksAddr(metadata *C.Metadata) []byte { func serializesSocksAddr(metadata *C.Metadata) []byte {
var buf [][]byte buf := protobytes.BytesWriter{}
addrType := metadata.AddrType() addrType := metadata.AddrType()
aType := uint8(addrType) buf.PutUint8(uint8(addrType))
p, _ := strconv.ParseUint(metadata.DstPort, 10, 16) p, _ := strconv.ParseUint(metadata.DstPort, 10, 16)
port := []byte{uint8(p >> 8), uint8(p & 0xff)}
switch addrType { switch addrType {
case socks5.AtypDomainName: case socks5.AtypDomainName:
len := uint8(len(metadata.Host)) buf.PutUint8(uint8(len(metadata.Host)))
host := []byte(metadata.Host) buf.PutString(metadata.Host)
buf = [][]byte{{aType, len}, host, port}
case socks5.AtypIPv4: case socks5.AtypIPv4:
host := metadata.DstIP.To4() buf.PutSlice(metadata.DstIP.To4())
buf = [][]byte{{aType}, host, port}
case socks5.AtypIPv6: case socks5.AtypIPv6:
host := metadata.DstIP.To16() buf.PutSlice(metadata.DstIP.To16())
buf = [][]byte{{aType}, host, port}
} }
return bytes.Join(buf, nil)
buf.PutUint16be(uint16(p))
return buf.Bytes()
} }
func resolveUDPAddr(network, address string) (*net.UDPAddr, error) { func resolveUDPAddr(network, address string) (*net.UDPAddr, error) {

View File

@ -340,15 +340,15 @@ func parseVmessAddr(metadata *C.Metadata) *vmess.DstAddr {
var addr []byte var addr []byte
switch metadata.AddrType() { switch metadata.AddrType() {
case socks5.AtypIPv4: case socks5.AtypIPv4:
addrType = byte(vmess.AtypIPv4) addrType = vmess.AtypIPv4
addr = make([]byte, net.IPv4len) addr = make([]byte, net.IPv4len)
copy(addr[:], metadata.DstIP.To4()) copy(addr[:], metadata.DstIP.To4())
case socks5.AtypIPv6: case socks5.AtypIPv6:
addrType = byte(vmess.AtypIPv6) addrType = vmess.AtypIPv6
addr = make([]byte, net.IPv6len) addr = make([]byte, net.IPv6len)
copy(addr[:], metadata.DstIP.To16()) copy(addr[:], metadata.DstIP.To16())
case socks5.AtypDomainName: case socks5.AtypDomainName:
addrType = byte(vmess.AtypDomainName) addrType = vmess.AtypDomainName
addr = make([]byte, len(metadata.Host)+1) addr = make([]byte, len(metadata.Host)+1)
addr[0] = byte(len(metadata.Host)) addr[0] = byte(len(metadata.Host))
copy(addr[1:], []byte(metadata.Host)) copy(addr[1:], []byte(metadata.Host))

View File

@ -9,6 +9,8 @@ import (
"github.com/Dreamacro/clash/common/structure" "github.com/Dreamacro/clash/common/structure"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
types "github.com/Dreamacro/clash/constant/provider" types "github.com/Dreamacro/clash/constant/provider"
regexp "github.com/dlclark/regexp2"
) )
var ( var (
@ -29,6 +31,7 @@ type GroupCommonOption struct {
Interval int `group:"interval,omitempty"` Interval int `group:"interval,omitempty"`
Lazy bool `group:"lazy,omitempty"` Lazy bool `group:"lazy,omitempty"`
DisableUDP bool `group:"disable-udp,omitempty"` DisableUDP bool `group:"disable-udp,omitempty"`
Filter string `group:"filter,omitempty"`
} }
func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, providersMap map[string]types.ProxyProvider) (C.ProxyAdapter, error) { func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, providersMap map[string]types.ProxyProvider) (C.ProxyAdapter, error) {
@ -45,22 +48,33 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
return nil, errFormat return nil, errFormat
} }
groupName := groupOption.Name var (
groupName = groupOption.Name
filterReg *regexp.Regexp
)
providers := []types.ProxyProvider{} if groupOption.Filter != "" {
f, err := regexp.Compile(groupOption.Filter, regexp.None)
if err != nil {
return nil, fmt.Errorf("%s: invalid filter regex: %w", groupName, err)
}
filterReg = f
}
if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 { if len(groupOption.Proxies) == 0 && len(groupOption.Use) == 0 {
return nil, errMissProxy return nil, fmt.Errorf("%s: %w", groupName, errMissProxy)
} }
providers := []types.ProxyProvider{}
if len(groupOption.Proxies) != 0 { if len(groupOption.Proxies) != 0 {
ps, err := getProxies(proxyMap, groupOption.Proxies) ps, err := getProxies(proxyMap, groupOption.Proxies)
if err != nil { if err != nil {
return nil, err return nil, fmt.Errorf("%s: %w", groupName, err)
} }
if _, ok := providersMap[groupName]; ok { if _, ok := providersMap[groupName]; ok {
return nil, errDuplicateProvider return nil, fmt.Errorf("%s: %w", groupName, errDuplicateProvider)
} }
// select don't need health check // select don't need health check
@ -68,20 +82,20 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
hc := provider.NewHealthCheck(ps, "", 0, true) hc := provider.NewHealthCheck(ps, "", 0, true)
pd, err := provider.NewCompatibleProvider(groupName, ps, hc) pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
if err != nil { if err != nil {
return nil, err return nil, fmt.Errorf("%s: %w", groupName, err)
} }
providers = append(providers, pd) providers = append(providers, pd)
providersMap[groupName] = pd providersMap[groupName] = pd
} else { } else {
if groupOption.URL == "" || groupOption.Interval == 0 { if groupOption.URL == "" || groupOption.Interval == 0 {
return nil, errMissHealthCheck return nil, fmt.Errorf("%s: %w", groupName, errMissHealthCheck)
} }
hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy) hc := provider.NewHealthCheck(ps, groupOption.URL, uint(groupOption.Interval), groupOption.Lazy)
pd, err := provider.NewCompatibleProvider(groupName, ps, hc) pd, err := provider.NewCompatibleProvider(groupName, ps, hc)
if err != nil { if err != nil {
return nil, err return nil, fmt.Errorf("%s: %w", groupName, err)
} }
providers = append(providers, pd) providers = append(providers, pd)
@ -92,10 +106,15 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
if len(groupOption.Use) != 0 { if len(groupOption.Use) != 0 {
list, err := getProviders(providersMap, groupOption.Use) list, err := getProviders(providersMap, groupOption.Use)
if err != nil { if err != nil {
return nil, err return nil, fmt.Errorf("%s: %w", groupName, err)
} }
if filterReg != nil {
pd := provider.NewFilterableProvider(groupName, list, filterReg)
providers = append(providers, pd)
} else {
providers = append(providers, list...) providers = append(providers, list...)
} }
}
var group C.ProxyAdapter var group C.ProxyAdapter
switch groupOption.Type { switch groupOption.Type {
@ -112,7 +131,7 @@ func ParseProxyGroup(config map[string]any, proxyMap map[string]C.Proxy, provide
case "relay": case "relay":
group = NewRelay(groupOption, providers) group = NewRelay(groupOption, providers)
default: default:
return nil, fmt.Errorf("%w: %s", errType, groupOption.Type) return nil, fmt.Errorf("%s %w: %s", groupName, errType, groupOption.Type)
} }
return group, nil return group, nil

View File

@ -7,6 +7,7 @@ import (
"github.com/Dreamacro/clash/common/batch" "github.com/Dreamacro/clash/common/batch"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/samber/lo"
"go.uber.org/atomic" "go.uber.org/atomic"
) )
@ -31,13 +32,20 @@ type HealthCheck struct {
func (hc *HealthCheck) process() { func (hc *HealthCheck) process() {
ticker := time.NewTicker(time.Duration(hc.interval) * time.Second) ticker := time.NewTicker(time.Duration(hc.interval) * time.Second)
go hc.check() go hc.checkAll()
for { for {
select { select {
case <-ticker.C: case <-ticker.C:
now := time.Now().Unix() now := time.Now().Unix()
if !hc.lazy || now-hc.lastTouch.Load() < int64(hc.interval) { if !hc.lazy || now-hc.lastTouch.Load() < int64(hc.interval) {
hc.check() hc.checkAll()
} else { // lazy but still need to check not alive proxies
notAliveProxies := lo.Filter(hc.proxies, func(proxy C.Proxy, _ int) bool {
return !proxy.Alive()
})
if len(notAliveProxies) != 0 {
hc.check(notAliveProxies)
}
} }
case <-hc.done: case <-hc.done:
ticker.Stop() ticker.Stop()
@ -58,9 +66,13 @@ func (hc *HealthCheck) touch() {
hc.lastTouch.Store(time.Now().Unix()) hc.lastTouch.Store(time.Now().Unix())
} }
func (hc *HealthCheck) check() { func (hc *HealthCheck) checkAll() {
hc.check(hc.proxies)
}
func (hc *HealthCheck) check(proxies []C.Proxy) {
b, _ := batch.New(context.Background(), batch.WithConcurrencyNum(10)) b, _ := batch.New(context.Background(), batch.WithConcurrencyNum(10))
for _, proxy := range hc.proxies { for _, proxy := range proxies {
p := proxy p := proxy
b.Go(p.Name(), func() (any, error) { b.Go(p.Name(), func() (any, error) {
ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout) ctx, cancel := context.WithTimeout(context.Background(), defaultURLTestTimeout)

View File

@ -10,7 +10,10 @@ import (
types "github.com/Dreamacro/clash/constant/provider" types "github.com/Dreamacro/clash/constant/provider"
) )
var errVehicleType = errors.New("unsupport vehicle type") var (
errVehicleType = errors.New("unsupport vehicle type")
errSubPath = errors.New("path is not subpath of home directory")
)
type healthCheckSchema struct { type healthCheckSchema struct {
Enable bool `provider:"enable"` Enable bool `provider:"enable"`
@ -53,6 +56,9 @@ func ParseProxyProvider(name string, mapping map[string]any) (types.ProxyProvide
case "file": case "file":
vehicle = NewFileVehicle(path) vehicle = NewFileVehicle(path)
case "http": case "http":
if !C.Path.IsSubPath(path) {
return nil, fmt.Errorf("%w: %s", errSubPath, path)
}
vehicle = NewHTTPVehicle(schema.URL, path) vehicle = NewHTTPVehicle(schema.URL, path)
default: default:
return nil, fmt.Errorf("%w: %s", errVehicleType, schema.Type) return nil, fmt.Errorf("%w: %s", errVehicleType, schema.Type)

View File

@ -4,17 +4,22 @@ import (
"encoding/json" "encoding/json"
"errors" "errors"
"fmt" "fmt"
"regexp"
"runtime" "runtime"
"time" "time"
"github.com/Dreamacro/clash/adapter" "github.com/Dreamacro/clash/adapter"
"github.com/Dreamacro/clash/adapter/outbound"
"github.com/Dreamacro/clash/common/singledo"
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
types "github.com/Dreamacro/clash/constant/provider" types "github.com/Dreamacro/clash/constant/provider"
regexp "github.com/dlclark/regexp2"
"github.com/samber/lo"
"gopkg.in/yaml.v3" "gopkg.in/yaml.v3"
) )
var reject = adapter.NewProxy(outbound.NewReject())
const ( const (
ReservedName = "default" ReservedName = "default"
) )
@ -49,7 +54,7 @@ func (pp *proxySetProvider) Name() string {
} }
func (pp *proxySetProvider) HealthCheck() { func (pp *proxySetProvider) HealthCheck() {
pp.healthCheck.check() pp.healthCheck.checkAll()
} }
func (pp *proxySetProvider) Update() error { func (pp *proxySetProvider) Update() error {
@ -86,7 +91,7 @@ func (pp *proxySetProvider) setProxies(proxies []C.Proxy) {
pp.proxies = proxies pp.proxies = proxies
pp.healthCheck.setProxy(proxies) pp.healthCheck.setProxy(proxies)
if pp.healthCheck.auto() { if pp.healthCheck.auto() {
go pp.healthCheck.check() go pp.healthCheck.checkAll()
} }
} }
@ -96,7 +101,7 @@ func stopProxyProvider(pd *ProxySetProvider) {
} }
func NewProxySetProvider(name string, interval time.Duration, filter string, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) { func NewProxySetProvider(name string, interval time.Duration, filter string, vehicle types.Vehicle, hc *HealthCheck) (*ProxySetProvider, error) {
filterReg, err := regexp.Compile(filter) filterReg, err := regexp.Compile(filter, regexp.None)
if err != nil { if err != nil {
return nil, fmt.Errorf("invalid filter regex: %w", err) return nil, fmt.Errorf("invalid filter regex: %w", err)
} }
@ -128,9 +133,15 @@ func NewProxySetProvider(name string, interval time.Duration, filter string, veh
proxies := []C.Proxy{} proxies := []C.Proxy{}
for idx, mapping := range schema.Proxies { for idx, mapping := range schema.Proxies {
if name, ok := mapping["name"].(string); ok && len(filter) > 0 && !filterReg.MatchString(name) { if name, ok := mapping["name"].(string); ok && len(filter) > 0 {
matched, err := filterReg.MatchString(name)
if err != nil {
return nil, fmt.Errorf("regex filter failed: %w", err)
}
if !matched {
continue continue
} }
}
proxy, err := adapter.ParseProxy(mapping) proxy, err := adapter.ParseProxy(mapping)
if err != nil { if err != nil {
return nil, fmt.Errorf("proxy %d error: %w", idx, err) return nil, fmt.Errorf("proxy %d error: %w", idx, err)
@ -181,7 +192,7 @@ func (cp *compatibleProvider) Name() string {
} }
func (cp *compatibleProvider) HealthCheck() { func (cp *compatibleProvider) HealthCheck() {
cp.healthCheck.check() cp.healthCheck.checkAll()
} }
func (cp *compatibleProvider) Update() error { func (cp *compatibleProvider) Update() error {
@ -231,3 +242,81 @@ func NewCompatibleProvider(name string, proxies []C.Proxy, hc *HealthCheck) (*Co
runtime.SetFinalizer(wrapper, stopCompatibleProvider) runtime.SetFinalizer(wrapper, stopCompatibleProvider)
return wrapper, nil return wrapper, nil
} }
var _ types.ProxyProvider = (*FilterableProvider)(nil)
type FilterableProvider struct {
name string
providers []types.ProxyProvider
filterReg *regexp.Regexp
single *singledo.Single
}
func (fp *FilterableProvider) MarshalJSON() ([]byte, error) {
return json.Marshal(map[string]any{
"name": fp.Name(),
"type": fp.Type().String(),
"vehicleType": fp.VehicleType().String(),
"proxies": fp.Proxies(),
})
}
func (fp *FilterableProvider) Name() string {
return fp.name
}
func (fp *FilterableProvider) HealthCheck() {
}
func (fp *FilterableProvider) Update() error {
return nil
}
func (fp *FilterableProvider) Initial() error {
return nil
}
func (fp *FilterableProvider) VehicleType() types.VehicleType {
return types.Compatible
}
func (fp *FilterableProvider) Type() types.ProviderType {
return types.Proxy
}
func (fp *FilterableProvider) Proxies() []C.Proxy {
elm, _, _ := fp.single.Do(func() (any, error) {
proxies := lo.FlatMap(
fp.providers,
func(item types.ProxyProvider, _ int) []C.Proxy {
return lo.Filter(
item.Proxies(),
func(item C.Proxy, _ int) bool {
matched, _ := fp.filterReg.MatchString(item.Name())
return matched
})
})
if len(proxies) == 0 {
proxies = append(proxies, reject)
}
return proxies, nil
})
return elm.([]C.Proxy)
}
func (fp *FilterableProvider) Touch() {
for _, provider := range fp.providers {
provider.Touch()
}
}
func NewFilterableProvider(name string, providers []types.ProxyProvider, filterReg *regexp.Regexp) *FilterableProvider {
return &FilterableProvider{
name: name,
providers: providers,
filterReg: filterReg,
single: singledo.NewSingle(time.Second * 10),
}
}

View File

@ -32,10 +32,14 @@ func NewAllocator() *Allocator {
// Get a []byte from pool with most appropriate cap // Get a []byte from pool with most appropriate cap
func (alloc *Allocator) Get(size int) []byte { func (alloc *Allocator) Get(size int) []byte {
if size <= 0 || size > 65536 { switch {
case size < 0:
panic("alloc.Get: len out of range")
case size == 0:
return nil return nil
} case size > 65536:
return make([]byte, size)
default:
bits := msb(size) bits := msb(size)
if size == 1<<bits { if size == 1<<bits {
return alloc.buffers[bits].Get().([]byte)[:size] return alloc.buffers[bits].Get().([]byte)[:size]
@ -43,12 +47,17 @@ func (alloc *Allocator) Get(size int) []byte {
return alloc.buffers[bits+1].Get().([]byte)[:size] return alloc.buffers[bits+1].Get().([]byte)[:size]
} }
}
// Put returns a []byte to pool for future use, // Put returns a []byte to pool for future use,
// which the cap must be exactly 2^n // which the cap must be exactly 2^n
func (alloc *Allocator) Put(buf []byte) error { func (alloc *Allocator) Put(buf []byte) error {
if cap(buf) == 0 || cap(buf) > 65536 {
return nil
}
bits := msb(cap(buf)) bits := msb(cap(buf))
if cap(buf) == 0 || cap(buf) > 65536 || cap(buf) != 1<<bits { if cap(buf) != 1<<bits {
return errors.New("allocator Put() incorrect buffer size") return errors.New("allocator Put() incorrect buffer size")
} }

View File

@ -19,17 +19,17 @@ func TestAllocGet(t *testing.T) {
assert.Equal(t, 1024, cap(alloc.Get(1023))) assert.Equal(t, 1024, cap(alloc.Get(1023)))
assert.Equal(t, 1024, len(alloc.Get(1024))) assert.Equal(t, 1024, len(alloc.Get(1024)))
assert.Equal(t, 65536, len(alloc.Get(65536))) assert.Equal(t, 65536, len(alloc.Get(65536)))
assert.Nil(t, alloc.Get(65537)) assert.Equal(t, 65537, len(alloc.Get(65537)))
} }
func TestAllocPut(t *testing.T) { func TestAllocPut(t *testing.T) {
alloc := NewAllocator() alloc := NewAllocator()
assert.NotNil(t, alloc.Put(nil), "put nil misbehavior") assert.Nil(t, alloc.Put(nil), "put nil misbehavior")
assert.NotNil(t, alloc.Put(make([]byte, 3)), "put elem:3 []bytes misbehavior") assert.NotNil(t, alloc.Put(make([]byte, 3)), "put elem:3 []bytes misbehavior")
assert.Nil(t, alloc.Put(make([]byte, 4)), "put elem:4 []bytes misbehavior") assert.Nil(t, alloc.Put(make([]byte, 4)), "put elem:4 []bytes misbehavior")
assert.Nil(t, alloc.Put(make([]byte, 1023, 1024)), "put elem:1024 []bytes misbehavior") assert.Nil(t, alloc.Put(make([]byte, 1023, 1024)), "put elem:1024 []bytes misbehavior")
assert.Nil(t, alloc.Put(make([]byte, 65536)), "put elem:65536 []bytes misbehavior") assert.Nil(t, alloc.Put(make([]byte, 65536)), "put elem:65536 []bytes misbehavior")
assert.NotNil(t, alloc.Put(make([]byte, 65537)), "put elem:65537 []bytes misbehavior") assert.Nil(t, alloc.Put(make([]byte, 65537)), "put elem:65537 []bytes misbehavior")
} }
func TestAllocPutThenGet(t *testing.T) { func TestAllocPutThenGet(t *testing.T) {

View File

@ -3,9 +3,14 @@ package pool
import ( import (
"bytes" "bytes"
"sync" "sync"
"github.com/Dreamacro/protobytes"
) )
var bufferPool = sync.Pool{New: func() any { return &bytes.Buffer{} }} var (
bufferPool = sync.Pool{New: func() any { return &bytes.Buffer{} }}
bytesBufferPool = sync.Pool{New: func() any { return &protobytes.BytesWriter{} }}
)
func GetBuffer() *bytes.Buffer { func GetBuffer() *bytes.Buffer {
return bufferPool.Get().(*bytes.Buffer) return bufferPool.Get().(*bytes.Buffer)
@ -15,3 +20,12 @@ func PutBuffer(buf *bytes.Buffer) {
buf.Reset() buf.Reset()
bufferPool.Put(buf) bufferPool.Put(buf)
} }
func GetBytesBuffer() *protobytes.BytesWriter {
return bytesBufferPool.Get().(*protobytes.BytesWriter)
}
func PutBytesBuffer(buf *protobytes.BytesWriter) {
buf.Reset()
bytesBufferPool.Put(buf)
}

View File

@ -14,5 +14,15 @@ func ListenDHCPClient(ctx context.Context, ifaceName string) (net.PacketConn, er
listenAddr = "255.255.255.255:68" listenAddr = "255.255.255.255:68"
} }
return dialer.ListenPacket(ctx, "udp4", listenAddr, dialer.WithInterface(ifaceName), dialer.WithAddrReuse(true)) options := []dialer.Option{
dialer.WithInterface(ifaceName),
dialer.WithAddrReuse(true),
}
// fallback bind on windows, because syscall bind can not receive broadcast
if runtime.GOOS == "windows" {
options = append(options, dialer.WithFallbackBind(true))
}
return dialer.ListenPacket(ctx, "udp4", listenAddr, options...)
} }

View File

@ -1,57 +1,12 @@
//go:build !linux && !darwin //go:build !linux && !darwin && !windows
package dialer package dialer
import ( import (
"net" "net"
"strconv" "strconv"
"strings"
"github.com/Dreamacro/clash/component/iface"
) )
func lookupLocalAddr(ifaceName string, network string, destination net.IP, port int) (net.Addr, error) {
ifaceObj, err := iface.ResolveInterface(ifaceName)
if err != nil {
return nil, err
}
var addr *net.IPNet
switch network {
case "udp4", "tcp4":
addr, err = ifaceObj.PickIPv4Addr(destination)
case "tcp6", "udp6":
addr, err = ifaceObj.PickIPv6Addr(destination)
default:
if destination != nil {
if destination.To4() != nil {
addr, err = ifaceObj.PickIPv4Addr(destination)
} else {
addr, err = ifaceObj.PickIPv6Addr(destination)
}
} else {
addr, err = ifaceObj.PickIPv4Addr(destination)
}
}
if err != nil {
return nil, err
}
if strings.HasPrefix(network, "tcp") {
return &net.TCPAddr{
IP: addr.IP,
Port: port,
}, nil
} else if strings.HasPrefix(network, "udp") {
return &net.UDPAddr{
IP: addr.IP,
Port: port,
}, nil
}
return nil, iface.ErrAddrNotFound
}
func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, network string, destination net.IP) error { func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, network string, destination net.IP) error {
if !destination.IsGlobalUnicast() { if !destination.IsGlobalUnicast() {
return nil return nil

View File

@ -0,0 +1,98 @@
package dialer
import (
"encoding/binary"
"net"
"strings"
"syscall"
"unsafe"
"github.com/Dreamacro/clash/component/iface"
"golang.org/x/sys/windows"
)
const (
IP_UNICAST_IF = 31
IPV6_UNICAST_IF = 31
)
type controlFn = func(network, address string, c syscall.RawConn) error
func bindControl(ifaceIdx int, chain controlFn) controlFn {
return func(network, address string, c syscall.RawConn) (err error) {
defer func() {
if err == nil && chain != nil {
err = chain(network, address, c)
}
}()
ipStr, _, err := net.SplitHostPort(address)
if err == nil {
ip := net.ParseIP(ipStr)
if ip != nil && !ip.IsGlobalUnicast() {
return
}
}
var innerErr error
err = c.Control(func(fd uintptr) {
if ipStr == "" && strings.HasPrefix(network, "udp") {
// When listening udp ":0", we should bind socket to interface4 and interface6 at the same time
// and ignore the error of bind6
_ = bindSocketToInterface6(windows.Handle(fd), ifaceIdx)
innerErr = bindSocketToInterface4(windows.Handle(fd), ifaceIdx)
return
}
switch network {
case "tcp4", "udp4":
innerErr = bindSocketToInterface4(windows.Handle(fd), ifaceIdx)
case "tcp6", "udp6":
innerErr = bindSocketToInterface6(windows.Handle(fd), ifaceIdx)
}
})
if innerErr != nil {
err = innerErr
}
return
}
}
func bindSocketToInterface4(handle windows.Handle, ifaceIdx int) error {
// MSDN says for IPv4 this needs to be in net byte order, so that it's like an IP address with leading zeros.
// Ref: https://learn.microsoft.com/en-us/windows/win32/winsock/ipproto-ip-socket-options
var bytes [4]byte
binary.BigEndian.PutUint32(bytes[:], uint32(ifaceIdx))
index := *(*uint32)(unsafe.Pointer(&bytes[0]))
err := windows.SetsockoptInt(handle, windows.IPPROTO_IP, IP_UNICAST_IF, int(index))
if err != nil {
return err
}
return nil
}
func bindSocketToInterface6(handle windows.Handle, ifaceIdx int) error {
return windows.SetsockoptInt(handle, windows.IPPROTO_IPV6, IPV6_UNICAST_IF, ifaceIdx)
}
func bindIfaceToDialer(ifaceName string, dialer *net.Dialer, _ string, _ net.IP) error {
ifaceObj, err := iface.ResolveInterface(ifaceName)
if err != nil {
return err
}
dialer.Control = bindControl(ifaceObj.Index, dialer.Control)
return nil
}
func bindIfaceToListenConfig(ifaceName string, lc *net.ListenConfig, _, address string) (string, error) {
ifaceObj, err := iface.ResolveInterface(ifaceName)
if err != nil {
return "", err
}
lc.Control = bindControl(ifaceObj.Index, lc.Control)
return address, nil
}

View File

@ -51,7 +51,15 @@ func ListenPacket(ctx context.Context, network, address string, options ...Optio
lc := &net.ListenConfig{} lc := &net.ListenConfig{}
if cfg.interfaceName != "" { if cfg.interfaceName != "" {
addr, err := bindIfaceToListenConfig(cfg.interfaceName, lc, network, address) var (
addr string
err error
)
if cfg.fallbackBind {
addr, err = fallbackBindIfaceToListenConfig(cfg.interfaceName, lc, network, address)
} else {
addr, err = bindIfaceToListenConfig(cfg.interfaceName, lc, network, address)
}
if err != nil { if err != nil {
return nil, err return nil, err
} }
@ -83,10 +91,16 @@ func dialContext(ctx context.Context, network string, destination net.IP, port s
dialer := &net.Dialer{} dialer := &net.Dialer{}
if opt.interfaceName != "" { if opt.interfaceName != "" {
if opt.fallbackBind {
if err := fallbackBindIfaceToDialer(opt.interfaceName, dialer, network, destination); err != nil {
return nil, err
}
} else {
if err := bindIfaceToDialer(opt.interfaceName, dialer, network, destination); err != nil { if err := bindIfaceToDialer(opt.interfaceName, dialer, network, destination); err != nil {
return nil, err return nil, err
} }
} }
}
if opt.routingMark != 0 { if opt.routingMark != 0 {
bindMarkToDialer(opt.routingMark, dialer, network, destination) bindMarkToDialer(opt.routingMark, dialer, network, destination)
} }

View File

@ -0,0 +1,90 @@
package dialer
import (
"net"
"strconv"
"strings"
"github.com/Dreamacro/clash/component/iface"
)
func lookupLocalAddr(ifaceName string, network string, destination net.IP, port int) (net.Addr, error) {
ifaceObj, err := iface.ResolveInterface(ifaceName)
if err != nil {
return nil, err
}
var addr *net.IPNet
switch network {
case "udp4", "tcp4":
addr, err = ifaceObj.PickIPv4Addr(destination)
case "tcp6", "udp6":
addr, err = ifaceObj.PickIPv6Addr(destination)
default:
if destination != nil {
if destination.To4() != nil {
addr, err = ifaceObj.PickIPv4Addr(destination)
} else {
addr, err = ifaceObj.PickIPv6Addr(destination)
}
} else {
addr, err = ifaceObj.PickIPv4Addr(destination)
}
}
if err != nil {
return nil, err
}
if strings.HasPrefix(network, "tcp") {
return &net.TCPAddr{
IP: addr.IP,
Port: port,
}, nil
} else if strings.HasPrefix(network, "udp") {
return &net.UDPAddr{
IP: addr.IP,
Port: port,
}, nil
}
return nil, iface.ErrAddrNotFound
}
func fallbackBindIfaceToDialer(ifaceName string, dialer *net.Dialer, network string, destination net.IP) error {
if !destination.IsGlobalUnicast() {
return nil
}
local := uint64(0)
if dialer.LocalAddr != nil {
_, port, err := net.SplitHostPort(dialer.LocalAddr.String())
if err == nil {
local, _ = strconv.ParseUint(port, 10, 16)
}
}
addr, err := lookupLocalAddr(ifaceName, network, destination, int(local))
if err != nil {
return err
}
dialer.LocalAddr = addr
return nil
}
func fallbackBindIfaceToListenConfig(ifaceName string, _ *net.ListenConfig, network, address string) (string, error) {
_, port, err := net.SplitHostPort(address)
if err != nil {
port = "0"
}
local, _ := strconv.ParseUint(port, 10, 16)
addr, err := lookupLocalAddr(ifaceName, network, nil, int(local))
if err != nil {
return "", err
}
return addr.String(), nil
}

View File

@ -10,6 +10,7 @@ var (
type option struct { type option struct {
interfaceName string interfaceName string
fallbackBind bool
addrReuse bool addrReuse bool
routingMark int routingMark int
} }
@ -22,6 +23,12 @@ func WithInterface(name string) Option {
} }
} }
func WithFallbackBind(fallback bool) Option {
return func(opt *option) {
opt.fallbackBind = fallback
}
}
func WithAddrReuse(reuse bool) Option { func WithAddrReuse(reuse bool) Option {
return func(opt *option) { return func(opt *option) {
opt.addrReuse = reuse opt.addrReuse = reuse

View File

@ -0,0 +1,22 @@
//go:build linux
package ipset
import (
"net"
"github.com/vishvananda/netlink"
)
// Test whether the ip is in the set or not
func Test(setName string, ip net.IP) (bool, error) {
return netlink.IpsetTest(setName, &netlink.IPSetEntry{
IP: ip,
})
}
// Verify dumps a specific ipset to check if we can use the set normally
func Verify(setName string) error {
_, err := netlink.IpsetList(setName)
return err
}

View File

@ -0,0 +1,17 @@
//go:build !linux
package ipset
import (
"net"
)
// Always return false in non-linux
func Test(setName string, ip net.IP) (bool, error) {
return false, nil
}
// Always pass in non-linux
func Verify(setName string) error {
return nil
}

View File

@ -2,7 +2,7 @@ package process
import ( import (
"errors" "errors"
"net" "net/netip"
) )
var ( var (
@ -16,6 +16,6 @@ const (
UDP = "udp" UDP = "udp"
) )
func FindProcessName(network string, srcIP net.IP, srcPort int) (string, error) { func FindProcessPath(network string, from netip.AddrPort, to netip.AddrPort) (string, error) {
return findProcessName(network, srcIP, srcPort) return findProcessPath(network, from, to)
} }

View File

@ -2,7 +2,7 @@ package process
import ( import (
"encoding/binary" "encoding/binary"
"net" "net/netip"
"strconv" "strconv"
"strings" "strings"
"syscall" "syscall"
@ -33,7 +33,7 @@ var structSize = func() int {
} }
}() }()
func findProcessName(network string, ip net.IP, port int) (string, error) { func findProcessPath(network string, from netip.AddrPort, _ netip.AddrPort) (string, error) {
var spath string var spath string
switch network { switch network {
case TCP: case TCP:
@ -44,7 +44,7 @@ func findProcessName(network string, ip net.IP, port int) (string, error) {
return "", ErrInvalidNetwork return "", ErrInvalidNetwork
} }
isIPv4 := ip.To4() != nil isIPv4 := from.Addr().Is4()
value, err := syscall.Sysctl(spath) value, err := syscall.Sysctl(spath)
if err != nil { if err != nil {
@ -65,30 +65,36 @@ func findProcessName(network string, ip net.IP, port int) (string, error) {
inp, so := i, i+104 inp, so := i, i+104
srcPort := binary.BigEndian.Uint16(buf[inp+18 : inp+20]) srcPort := binary.BigEndian.Uint16(buf[inp+18 : inp+20])
if uint16(port) != srcPort { if from.Port() != srcPort {
continue continue
} }
// FIXME: add dstPort check
// xinpcb_n.inp_vflag // xinpcb_n.inp_vflag
flag := buf[inp+44] flag := buf[inp+44]
var ( var (
srcIP net.IP srcIP netip.Addr
srcIPOk bool
srcIsIPv4 bool srcIsIPv4 bool
) )
switch { switch {
case flag&0x1 > 0 && isIPv4: case flag&0x1 > 0 && isIPv4:
// ipv4 // ipv4
srcIP = net.IP(buf[inp+76 : inp+80]) srcIP, srcIPOk = netip.AddrFromSlice(buf[inp+76 : inp+80])
srcIsIPv4 = true srcIsIPv4 = true
case flag&0x2 > 0 && !isIPv4: case flag&0x2 > 0 && !isIPv4:
// ipv6 // ipv6
srcIP = net.IP(buf[inp+64 : inp+80]) srcIP, srcIPOk = netip.AddrFromSlice(buf[inp+64 : inp+80])
default: default:
continue continue
} }
if !srcIPOk {
continue
}
if ip.Equal(srcIP) { if from.Addr() == srcIP { // FIXME: add dstIP check
// xsocket_n.so_last_pid // xsocket_n.so_last_pid
pid := readNativeUint32(buf[so+68 : so+72]) pid := readNativeUint32(buf[so+68 : so+72])
return getExecPathFromPID(pid) return getExecPathFromPID(pid)

View File

@ -0,0 +1,217 @@
package process
import (
"encoding/binary"
"fmt"
"net/netip"
"strconv"
"strings"
"unsafe"
"golang.org/x/sys/unix"
)
type Xinpgen12 [64]byte // size 64
type InEndpoints12 struct {
FPort [2]byte
LPort [2]byte
FAddr [16]byte
LAddr [16]byte
ZoneID uint32
} // size 40
type XTcpcb12 struct {
Len uint32 // offset 0
_ [20]byte // offset 4
SocketAddr uint64 // offset 24
_ [84]byte // offset 32
Family uint32 // offset 116
_ [140]byte // offset 120
InEndpoints InEndpoints12 // offset 260
_ [444]byte // offset 300
} // size 744
type XInpcb12 struct {
Len uint32 // offset 0
_ [12]byte // offset 4
SocketAddr uint64 // offset 16
_ [84]byte // offset 24
Family uint32 // offset 108
_ [140]byte // offset 112
InEndpoints InEndpoints12 // offset 252
_ [108]byte // offset 292
} // size 400
type XFile12 struct {
Size uint64 // offset 0
Pid uint32 // offset 8
_ [44]byte // offset 12
DataAddr uint64 // offset 56
_ [64]byte // offset 64
} // size 128
var majorVersion = func() int {
releaseVersion, err := unix.Sysctl("kern.osrelease")
if err != nil {
return 0
}
majorVersionText, _, _ := strings.Cut(releaseVersion, ".")
majorVersion, err := strconv.Atoi(majorVersionText)
if err != nil {
return 0
}
return majorVersion
}()
func findProcessPath(network string, from netip.AddrPort, to netip.AddrPort) (string, error) {
switch majorVersion {
case 12, 13:
return findProcessPath12(network, from, to)
}
return "", ErrPlatformNotSupport
}
func findProcessPath12(network string, from netip.AddrPort, to netip.AddrPort) (string, error) {
switch network {
case TCP:
data, err := unix.SysctlRaw("net.inet.tcp.pcblist")
if err != nil {
return "", err
}
if len(data) < int(unsafe.Sizeof(Xinpgen12{})) {
return "", fmt.Errorf("invalid sysctl data len: %d", len(data))
}
data = data[unsafe.Sizeof(Xinpgen12{}):]
for len(data) > int(unsafe.Sizeof(XTcpcb12{}.Len)) {
tcb := (*XTcpcb12)(unsafe.Pointer(&data[0]))
if tcb.Len < uint32(unsafe.Sizeof(XTcpcb12{})) || uint32(len(data)) < tcb.Len {
break
}
data = data[tcb.Len:]
var (
connFromAddr netip.Addr
connToAddr netip.Addr
)
if tcb.Family == unix.AF_INET {
connFromAddr = netip.AddrFrom4([4]byte(tcb.InEndpoints.LAddr[12:16]))
connToAddr = netip.AddrFrom4([4]byte(tcb.InEndpoints.FAddr[12:16]))
} else if tcb.Family == unix.AF_INET6 {
connFromAddr = netip.AddrFrom16(tcb.InEndpoints.LAddr)
connToAddr = netip.AddrFrom16(tcb.InEndpoints.FAddr)
} else {
continue
}
connFrom := netip.AddrPortFrom(connFromAddr, binary.BigEndian.Uint16(tcb.InEndpoints.LPort[:]))
connTo := netip.AddrPortFrom(connToAddr, binary.BigEndian.Uint16(tcb.InEndpoints.FPort[:]))
if connFrom == from && connTo == to {
pid, err := findPidBySocketAddr12(tcb.SocketAddr)
if err != nil {
return "", err
}
return findExecutableByPid(pid)
}
}
case UDP:
data, err := unix.SysctlRaw("net.inet.udp.pcblist")
if err != nil {
return "", err
}
if len(data) < int(unsafe.Sizeof(Xinpgen12{})) {
return "", fmt.Errorf("invalid sysctl data len: %d", len(data))
}
data = data[unsafe.Sizeof(Xinpgen12{}):]
for len(data) > int(unsafe.Sizeof(XInpcb12{}.Len)) {
icb := (*XInpcb12)(unsafe.Pointer(&data[0]))
if icb.Len < uint32(unsafe.Sizeof(XInpcb12{})) || uint32(len(data)) < icb.Len {
break
}
data = data[icb.Len:]
var connFromAddr netip.Addr
if icb.Family == unix.AF_INET {
connFromAddr = netip.AddrFrom4([4]byte(icb.InEndpoints.LAddr[12:16]))
} else if icb.Family == unix.AF_INET6 {
connFromAddr = netip.AddrFrom16(icb.InEndpoints.LAddr)
} else {
continue
}
connFromPort := binary.BigEndian.Uint16(icb.InEndpoints.LPort[:])
if (connFromAddr == from.Addr() || connFromAddr.IsUnspecified()) && connFromPort == from.Port() {
pid, err := findPidBySocketAddr12(icb.SocketAddr)
if err != nil {
return "", err
}
return findExecutableByPid(pid)
}
}
}
return "", ErrNotFound
}
func findPidBySocketAddr12(socketAddr uint64) (uint32, error) {
buf, err := unix.SysctlRaw("kern.file")
if err != nil {
return 0, err
}
filesLen := len(buf) / int(unsafe.Sizeof(XFile12{}))
files := unsafe.Slice((*XFile12)(unsafe.Pointer(&buf[0])), filesLen)
for _, file := range files {
if file.Size != uint64(unsafe.Sizeof(XFile12{})) {
return 0, fmt.Errorf("invalid xfile size: %d", file.Size)
}
if file.DataAddr == socketAddr {
return file.Pid, nil
}
}
return 0, ErrNotFound
}
func findExecutableByPid(pid uint32) (string, error) {
buf := make([]byte, unix.PathMax)
size := uint64(len(buf))
mib := [4]uint32{
unix.CTL_KERN,
14, // KERN_PROC
12, // KERN_PROC_PATHNAME
pid,
}
_, _, errno := unix.Syscall6(
unix.SYS___SYSCTL,
uintptr(unsafe.Pointer(&mib[0])),
uintptr(len(mib)),
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(&size)),
0,
0,
)
if errno != 0 || size == 0 {
return "", fmt.Errorf("sysctl: get proc name: %w", errno)
}
return string(buf[:size-1]), nil
}

View File

@ -1,233 +0,0 @@
package process
import (
"encoding/binary"
"fmt"
"net"
"strconv"
"strings"
"sync"
"syscall"
"unsafe"
"github.com/Dreamacro/clash/log"
)
// store process name for when dealing with multiple PROCESS-NAME rules
var (
defaultSearcher *searcher
once sync.Once
)
func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
once.Do(func() {
if err := initSearcher(); err != nil {
log.Errorln("Initialize PROCESS-NAME failed: %s", err.Error())
log.Warnln("All PROCESS-NAME rules will be skipped")
return
}
})
if defaultSearcher == nil {
return "", ErrPlatformNotSupport
}
var spath string
isTCP := network == TCP
switch network {
case TCP:
spath = "net.inet.tcp.pcblist"
case UDP:
spath = "net.inet.udp.pcblist"
default:
return "", ErrInvalidNetwork
}
value, err := syscall.Sysctl(spath)
if err != nil {
return "", err
}
buf := []byte(value)
pid, err := defaultSearcher.Search(buf, ip, uint16(srcPort), isTCP)
if err != nil {
return "", err
}
return getExecPathFromPID(pid)
}
func getExecPathFromPID(pid uint32) (string, error) {
buf := make([]byte, 2048)
size := uint64(len(buf))
// CTL_KERN, KERN_PROC, KERN_PROC_PATHNAME, pid
mib := [4]uint32{1, 14, 12, pid}
_, _, errno := syscall.Syscall6(
syscall.SYS___SYSCTL,
uintptr(unsafe.Pointer(&mib[0])),
uintptr(len(mib)),
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(&size)),
0,
0)
if errno != 0 || size == 0 {
return "", errno
}
return string(buf[:size-1]), nil
}
func readNativeUint32(b []byte) uint32 {
return *(*uint32)(unsafe.Pointer(&b[0]))
}
type searcher struct {
// sizeof(struct xinpgen)
headSize int
// sizeof(struct xtcpcb)
tcpItemSize int
// sizeof(struct xinpcb)
udpItemSize int
udpInpOffset int
port int
ip int
vflag int
socket int
// sizeof(struct xfile)
fileItemSize int
data int
pid int
}
func (s *searcher) Search(buf []byte, ip net.IP, port uint16, isTCP bool) (uint32, error) {
var itemSize int
var inpOffset int
if isTCP {
// struct xtcpcb
itemSize = s.tcpItemSize
inpOffset = 8
} else {
// struct xinpcb
itemSize = s.udpItemSize
inpOffset = s.udpInpOffset
}
isIPv4 := ip.To4() != nil
// skip the first xinpgen block
for i := s.headSize; i+itemSize <= len(buf); i += itemSize {
inp := i + inpOffset
srcPort := binary.BigEndian.Uint16(buf[inp+s.port : inp+s.port+2])
if port != srcPort {
continue
}
// xinpcb.inp_vflag
flag := buf[inp+s.vflag]
var srcIP net.IP
switch {
case flag&0x1 > 0 && isIPv4:
// ipv4
srcIP = net.IP(buf[inp+s.ip : inp+s.ip+4])
case flag&0x2 > 0 && !isIPv4:
// ipv6
srcIP = net.IP(buf[inp+s.ip-12 : inp+s.ip+4])
default:
continue
}
if !ip.Equal(srcIP) {
continue
}
// xsocket.xso_so, interpreted as big endian anyway since it's only used for comparison
socket := binary.BigEndian.Uint64(buf[inp+s.socket : inp+s.socket+8])
return s.searchSocketPid(socket)
}
return 0, ErrNotFound
}
func (s *searcher) searchSocketPid(socket uint64) (uint32, error) {
value, err := syscall.Sysctl("kern.file")
if err != nil {
return 0, err
}
buf := []byte(value)
// struct xfile
itemSize := s.fileItemSize
for i := 0; i+itemSize <= len(buf); i += itemSize {
// xfile.xf_data
data := binary.BigEndian.Uint64(buf[i+s.data : i+s.data+8])
if data == socket {
// xfile.xf_pid
pid := readNativeUint32(buf[i+s.pid : i+s.pid+4])
return pid, nil
}
}
return 0, ErrNotFound
}
func newSearcher(major int) *searcher {
var s *searcher
switch major {
case 11:
s = &searcher{
headSize: 32,
tcpItemSize: 1304,
udpItemSize: 632,
port: 198,
ip: 228,
vflag: 116,
socket: 88,
fileItemSize: 80,
data: 56,
pid: 8,
udpInpOffset: 8,
}
case 12:
fallthrough
case 13:
s = &searcher{
headSize: 64,
tcpItemSize: 744,
udpItemSize: 400,
port: 254,
ip: 284,
vflag: 392,
socket: 16,
fileItemSize: 128,
data: 56,
pid: 8,
}
}
return s
}
func initSearcher() error {
osRelease, err := syscall.Sysctl("kern.osrelease")
if err != nil {
return err
}
dot := strings.Index(osRelease, ".")
if dot != -1 {
osRelease = osRelease[:dot]
}
major, err := strconv.Atoi(osRelease)
if err != nil {
return err
}
defaultSearcher = newSearcher(major)
if defaultSearcher == nil {
return fmt.Errorf("unsupported freebsd version %d", major)
}
return nil
}

View File

@ -0,0 +1,35 @@
//go:build freebsd
package process
import (
"testing"
"unsafe"
"github.com/stretchr/testify/assert"
)
func TestEnforceStructValid12(t *testing.T) {
if majorVersion != 12 && majorVersion != 13 {
t.Skipf("Unsupported freebsd version: %d", majorVersion)
return
}
assert.Equal(t, 0, int(unsafe.Offsetof(XTcpcb12{}.Len)))
assert.Equal(t, 24, int(unsafe.Offsetof(XTcpcb12{}.SocketAddr)))
assert.Equal(t, 116, int(unsafe.Offsetof(XTcpcb12{}.Family)))
assert.Equal(t, 260, int(unsafe.Offsetof(XTcpcb12{}.InEndpoints)))
assert.Equal(t, 0, int(unsafe.Offsetof(XInpcb12{}.Len)))
assert.Equal(t, 16, int(unsafe.Offsetof(XInpcb12{}.SocketAddr)))
assert.Equal(t, 108, int(unsafe.Offsetof(XInpcb12{}.Family)))
assert.Equal(t, 252, int(unsafe.Offsetof(XInpcb12{}.InEndpoints)))
assert.Equal(t, 0, int(unsafe.Offsetof(XFile12{}.Size)))
assert.Equal(t, 8, int(unsafe.Offsetof(XFile12{}.Pid)))
assert.Equal(t, 56, int(unsafe.Offsetof(XFile12{}.DataAddr)))
assert.Equal(t, 64, int(unsafe.Sizeof(Xinpgen12{})))
assert.Equal(t, 744, int(unsafe.Sizeof(XTcpcb12{})))
assert.Equal(t, 400, int(unsafe.Sizeof(XInpcb12{})))
assert.Equal(t, 40, int(unsafe.Sizeof(InEndpoints12{})))
assert.Equal(t, 128, int(unsafe.Sizeof(XFile12{})))
}

View File

@ -5,23 +5,16 @@ import (
"encoding/binary" "encoding/binary"
"fmt" "fmt"
"net" "net"
"net/netip"
"os" "os"
"path/filepath"
"strings"
"syscall"
"unicode"
"unsafe" "unsafe"
"github.com/Dreamacro/clash/common/pool"
"github.com/mdlayher/netlink" "github.com/mdlayher/netlink"
"golang.org/x/sys/unix" "golang.org/x/sys/unix"
) )
const (
SOCK_DIAG_BY_FAMILY = 20
inetDiagRequestSize = int(unsafe.Sizeof(inetDiagRequest{}))
inetDiagResponseSize = int(unsafe.Sizeof(inetDiagResponse{}))
)
type inetDiagRequest struct { type inetDiagRequest struct {
Family byte Family byte
Protocol byte Protocol byte
@ -57,42 +50,74 @@ type inetDiagResponse struct {
INode uint32 INode uint32
} }
func findProcessName(network string, ip net.IP, srcPort int) (string, error) { func findProcessPath(network string, from netip.AddrPort, to netip.AddrPort) (string, error) {
inode, uid, err := resolveSocketByNetlink(network, ip, srcPort) inode, uid, err := resolveSocketByNetlink(network, from, to)
if err != nil { if err != nil {
return "", err return "", err
} }
return resolveProcessNameByProcSearch(inode, uid) return resolveProcessPathByProcSearch(inode, uid)
} }
func resolveSocketByNetlink(network string, ip net.IP, srcPort int) (uint32, uint32, error) { func resolveSocketByNetlink(network string, from netip.AddrPort, to netip.AddrPort) (inode uint32, uid uint32, err error) {
var families []byte
if from.Addr().Unmap().Is4() {
families = []byte{unix.AF_INET, unix.AF_INET6}
} else {
families = []byte{unix.AF_INET6, unix.AF_INET}
}
var protocol byte
switch network {
case TCP:
protocol = unix.IPPROTO_TCP
case UDP:
protocol = unix.IPPROTO_UDP
default:
return 0, 0, ErrInvalidNetwork
}
if protocol == unix.IPPROTO_UDP {
// Swap from & to for udp
// See also https://www.mail-archive.com/netdev@vger.kernel.org/msg248638.html
from, to = to, from
}
for _, family := range families {
inode, uid, err = resolveSocketByNetlinkExact(family, protocol, from, to, netlink.Request)
if err == nil {
return inode, uid, err
}
}
return 0, 0, ErrNotFound
}
func resolveSocketByNetlinkExact(family byte, protocol byte, from netip.AddrPort, to netip.AddrPort, flags netlink.HeaderFlags) (inode uint32, uid uint32, err error) {
request := &inetDiagRequest{ request := &inetDiagRequest{
Family: family,
Protocol: protocol,
States: 0xffffffff, States: 0xffffffff,
Cookie: [2]uint32{0xffffffff, 0xffffffff}, Cookie: [2]uint32{0xffffffff, 0xffffffff},
} }
if ip.To4() != nil { var (
request.Family = unix.AF_INET fromAddr []byte
toAddr []byte
)
if family == unix.AF_INET {
fromAddr = net.IP(from.Addr().AsSlice()).To4()
toAddr = net.IP(to.Addr().AsSlice()).To4()
} else { } else {
request.Family = unix.AF_INET6 fromAddr = net.IP(from.Addr().AsSlice()).To16()
toAddr = net.IP(to.Addr().AsSlice()).To16()
} }
if strings.HasPrefix(network, "tcp") { copy(request.Src[:], fromAddr)
request.Protocol = unix.IPPROTO_TCP copy(request.Dst[:], toAddr)
} else if strings.HasPrefix(network, "udp") {
request.Protocol = unix.IPPROTO_UDP
} else {
return 0, 0, ErrInvalidNetwork
}
if v4 := ip.To4(); v4 != nil { binary.BigEndian.PutUint16(request.SrcPort[:], from.Port())
copy(request.Src[:], v4) binary.BigEndian.PutUint16(request.DstPort[:], to.Port())
} else {
copy(request.Src[:], ip)
}
binary.BigEndian.PutUint16(request.SrcPort[:], uint16(srcPort))
conn, err := netlink.Dial(unix.NETLINK_INET_DIAG, nil) conn, err := netlink.Dial(unix.NETLINK_INET_DIAG, nil)
if err != nil { if err != nil {
@ -102,10 +127,10 @@ func resolveSocketByNetlink(network string, ip net.IP, srcPort int) (uint32, uin
message := netlink.Message{ message := netlink.Message{
Header: netlink.Header{ Header: netlink.Header{
Type: SOCK_DIAG_BY_FAMILY, Type: 20, // SOCK_DIAG_BY_FAMILY
Flags: netlink.Request | netlink.Dump, Flags: flags,
}, },
Data: (*(*[inetDiagRequestSize]byte)(unsafe.Pointer(request)))[:], Data: (*(*[unsafe.Sizeof(*request)]byte)(unsafe.Pointer(request)))[:],
} }
messages, err := conn.Execute(message) messages, err := conn.Execute(message)
@ -114,7 +139,7 @@ func resolveSocketByNetlink(network string, ip net.IP, srcPort int) (uint32, uin
} }
for _, msg := range messages { for _, msg := range messages {
if len(msg.Data) < inetDiagResponseSize { if len(msg.Data) < int(unsafe.Sizeof(inetDiagResponse{})) {
continue continue
} }
@ -126,53 +151,82 @@ func resolveSocketByNetlink(network string, ip net.IP, srcPort int) (uint32, uin
return 0, 0, ErrNotFound return 0, 0, ErrNotFound
} }
func resolveProcessNameByProcSearch(inode, uid uint32) (string, error) { func resolveProcessPathByProcSearch(inode, uid uint32) (string, error) {
files, err := os.ReadDir("/proc") procDir, err := os.Open("/proc")
if err != nil {
return "", err
}
defer procDir.Close()
pids, err := procDir.Readdirnames(-1)
if err != nil { if err != nil {
return "", err return "", err
} }
buffer := make([]byte, unix.PathMax) expectedSocketName := fmt.Appendf(nil, "socket:[%d]", inode)
socket := fmt.Appendf(nil, "socket:[%d]", inode)
for _, f := range files { pathBuffer := pool.Get(64)
if !f.IsDir() || !isPid(f.Name()) { defer pool.Put(pathBuffer)
readlinkBuffer := pool.Get(32)
defer pool.Put(readlinkBuffer)
copy(pathBuffer, "/proc/")
for _, pid := range pids {
if !isPid(pid) {
continue continue
} }
info, err := f.Info() pathBuffer = append(pathBuffer[:len("/proc/")], pid...)
stat := &unix.Stat_t{}
err = unix.Stat(string(pathBuffer), stat)
if err != nil { if err != nil {
return "", err continue
} } else if stat.Uid != uid {
if info.Sys().(*syscall.Stat_t).Uid != uid {
continue continue
} }
processPath := filepath.Join("/proc", f.Name()) pathBuffer = append(pathBuffer, "/fd/"...)
fdPath := filepath.Join(processPath, "fd") fdsPrefixLength := len(pathBuffer)
fds, err := os.ReadDir(fdPath) fdDir, err := os.Open(string(pathBuffer))
if err != nil {
continue
}
fds, err := fdDir.Readdirnames(-1)
fdDir.Close()
if err != nil { if err != nil {
continue continue
} }
for _, fd := range fds { for _, fd := range fds {
n, err := unix.Readlink(filepath.Join(fdPath, fd.Name()), buffer) pathBuffer = pathBuffer[:fdsPrefixLength]
pathBuffer = append(pathBuffer, fd...)
n, err := unix.Readlink(string(pathBuffer), readlinkBuffer)
if err != nil { if err != nil {
continue continue
} }
if bytes.Equal(buffer[:n], socket) { if bytes.Equal(readlinkBuffer[:n], expectedSocketName) {
return os.Readlink(filepath.Join(processPath, "exe")) return os.Readlink("/proc/" + pid + "/exe")
} }
} }
} }
return "", fmt.Errorf("process of uid(%d),inode(%d) not found", uid, inode) return "", fmt.Errorf("inode %d of uid %d not found", inode, uid)
} }
func isPid(s string) bool { func isPid(name string) bool {
return strings.IndexFunc(s, func(r rune) bool { for _, c := range name {
return !unicode.IsDigit(r) if c < '0' || c > '9' {
}) == -1 return false
}
}
return true
} }

View File

@ -1,9 +1,11 @@
//go:build !darwin && !linux && !windows && (!freebsd || !amd64) //go:build !darwin && !linux && !windows && !freebsd
package process package process
import "net" import (
"net/netip"
)
func findProcessName(network string, ip net.IP, srcPort int) (string, error) { func findProcessPath(_ string, _, _ netip.AddrPort) (string, error) {
return "", ErrPlatformNotSupport return "", ErrPlatformNotSupport
} }

View File

@ -0,0 +1,112 @@
package process
import (
"net"
"net/netip"
"os"
"testing"
"github.com/stretchr/testify/assert"
)
func testConn(t *testing.T, network, address string) {
l, err := net.Listen(network, address)
if err != nil {
assert.FailNow(t, "Listen failed", err)
}
defer l.Close()
conn, err := net.Dial("tcp", l.Addr().String())
if err != nil {
assert.FailNow(t, "Dial failed", err)
}
defer conn.Close()
rConn, err := l.Accept()
if err != nil {
assert.FailNow(t, "Accept conn failed", err)
}
defer rConn.Close()
path, err := FindProcessPath(TCP, conn.LocalAddr().(*net.TCPAddr).AddrPort(), conn.RemoteAddr().(*net.TCPAddr).AddrPort())
if err != nil {
assert.FailNow(t, "Find process path failed", err)
}
exePath, err := os.Executable()
if err != nil {
assert.FailNow(t, "Get executable failed", err)
}
assert.Equal(t, exePath, path)
}
func TestFindProcessPathTCP(t *testing.T) {
t.Run("v4", func(t *testing.T) {
testConn(t, "tcp4", "127.0.0.1:0")
})
t.Run("v6", func(t *testing.T) {
testConn(t, "tcp6", "[::1]:0")
})
}
func testPacketConn(t *testing.T, network, lAddress, rAddress string) {
lConn, err := net.ListenPacket(network, lAddress)
if err != nil {
assert.FailNow(t, "ListenPacket failed", err)
}
defer lConn.Close()
rConn, err := net.ListenPacket(network, rAddress)
if err != nil {
assert.FailNow(t, "ListenPacket failed", err)
}
defer rConn.Close()
_, err = lConn.WriteTo([]byte{0}, rConn.LocalAddr())
if err != nil {
assert.FailNow(t, "Send message failed", err)
}
_, lAddr, err := rConn.ReadFrom([]byte{0})
if err != nil {
assert.FailNow(t, "Receive message failed", err)
}
path, err := FindProcessPath(UDP, lAddr.(*net.UDPAddr).AddrPort(), rConn.LocalAddr().(*net.UDPAddr).AddrPort())
if err != nil {
assert.FailNow(t, "Find process path", err)
}
exePath, err := os.Executable()
if err != nil {
assert.FailNow(t, "Find executable", err)
}
assert.Equal(t, exePath, path)
}
func TestFindProcessPathUDP(t *testing.T) {
t.Run("v4", func(t *testing.T) {
testPacketConn(t, "udp4", "127.0.0.1:0", "127.0.0.1:0")
})
t.Run("v6", func(t *testing.T) {
testPacketConn(t, "udp6", "[::1]:0", "[::1]:0")
})
t.Run("v4AnyLocal", func(t *testing.T) {
testPacketConn(t, "udp4", "0.0.0.0:0", "127.0.0.1:0")
})
t.Run("v6AnyLocal", func(t *testing.T) {
testPacketConn(t, "udp6", "[::]:0", "[::1]:0")
})
}
func BenchmarkFindProcessName(b *testing.B) {
from := netip.MustParseAddrPort("127.0.0.1:11447")
to := netip.MustParseAddrPort("127.0.0.1:33669")
b.ResetTimer()
for i := 0; i < b.N; i++ {
FindProcessPath(TCP, from, to)
}
}

View File

@ -1,194 +1,204 @@
package process package process
import ( import (
"errors"
"fmt" "fmt"
"net" "net/netip"
"sync"
"syscall"
"unsafe" "unsafe"
"github.com/Dreamacro/clash/log"
"golang.org/x/sys/windows" "golang.org/x/sys/windows"
)
const ( "github.com/Dreamacro/clash/common/pool"
tcpTableFunc = "GetExtendedTcpTable"
tcpTablePidConn = 4
udpTableFunc = "GetExtendedUdpTable"
udpTablePid = 1
queryProcNameFunc = "QueryFullProcessImageNameW"
) )
var ( var (
getExTCPTable uintptr modIphlpapi = windows.NewLazySystemDLL("iphlpapi.dll")
getExUDPTable uintptr
queryProcName uintptr
once sync.Once procGetExtendedTcpTable = modIphlpapi.NewProc("GetExtendedTcpTable")
procGetExtendedUdpTable = modIphlpapi.NewProc("GetExtendedUdpTable")
) )
func initWin32API() error { func findProcessPath(network string, from netip.AddrPort, to netip.AddrPort) (string, error) {
h, err := windows.LoadLibrary("iphlpapi.dll") family := uint32(windows.AF_INET)
if err != nil { if from.Addr().Is6() {
return fmt.Errorf("LoadLibrary iphlpapi.dll failed: %s", err.Error())
}
getExTCPTable, err = windows.GetProcAddress(h, tcpTableFunc)
if err != nil {
return fmt.Errorf("GetProcAddress of %s failed: %s", tcpTableFunc, err.Error())
}
getExUDPTable, err = windows.GetProcAddress(h, udpTableFunc)
if err != nil {
return fmt.Errorf("GetProcAddress of %s failed: %s", udpTableFunc, err.Error())
}
h, err = windows.LoadLibrary("kernel32.dll")
if err != nil {
return fmt.Errorf("LoadLibrary kernel32.dll failed: %s", err.Error())
}
queryProcName, err = windows.GetProcAddress(h, queryProcNameFunc)
if err != nil {
return fmt.Errorf("GetProcAddress of %s failed: %s", queryProcNameFunc, err.Error())
}
return nil
}
func findProcessName(network string, ip net.IP, srcPort int) (string, error) {
once.Do(func() {
err := initWin32API()
if err != nil {
log.Errorln("Initialize PROCESS-NAME failed: %s", err.Error())
log.Warnln("All PROCESS-NAMES rules will be skiped")
return
}
})
family := windows.AF_INET
if ip.To4() == nil {
family = windows.AF_INET6 family = windows.AF_INET6
} }
var class int var protocol uint32
var fn uintptr
switch network { switch network {
case TCP: case TCP:
fn = getExTCPTable protocol = windows.IPPROTO_TCP
class = tcpTablePidConn
case UDP: case UDP:
fn = getExUDPTable protocol = windows.IPPROTO_UDP
class = udpTablePid
default: default:
return "", ErrInvalidNetwork return "", ErrInvalidNetwork
} }
buf, err := getTransportTable(fn, family, class) pid, err := findPidByConnectionEndpoint(family, protocol, from, to)
if err != nil { if err != nil {
return "", err return "", err
} }
s := newSearcher(family == windows.AF_INET, network == TCP)
pid, err := s.Search(buf, ip, uint16(srcPort))
if err != nil {
return "", err
}
return getExecPathFromPID(pid) return getExecPathFromPID(pid)
} }
type searcher struct { func findPidByConnectionEndpoint(family uint32, protocol uint32, from netip.AddrPort, to netip.AddrPort) (uint32, error) {
itemSize int buf := pool.Get(0)
port int defer pool.Put(buf)
ip int
ipSize int
pid int
tcpState int
}
func (s *searcher) Search(b []byte, ip net.IP, port uint16) (uint32, error) { bufSize := uint32(len(buf))
n := int(readNativeUint32(b[:4]))
itemSize := s.itemSize
for i := 0; i < n; i++ {
row := b[4+itemSize*i : 4+itemSize*(i+1)]
if s.tcpState >= 0 { loop:
tcpState := readNativeUint32(row[s.tcpState : s.tcpState+4]) for {
// MIB_TCP_STATE_ESTAB, only check established connections for TCP var ret uintptr
if tcpState != 5 {
continue
}
}
// according to MSDN, only the lower 16 bits of dwLocalPort are used and the port number is in network endian. switch protocol {
// this field can be illustrated as follows depends on different machine endianess: case windows.IPPROTO_TCP:
// little endian: [ MSB LSB 0 0 ] interpret as native uint32 is ((LSB<<8)|MSB) ret, _, _ = procGetExtendedTcpTable.Call(
// big endian: [ 0 0 MSB LSB ] interpret as native uint32 is ((MSB<<8)|LSB) uintptr(unsafe.Pointer(unsafe.SliceData(buf))),
// so we need an syscall.Ntohs on the lower 16 bits after read the port as native uint32 uintptr(unsafe.Pointer(&bufSize)),
srcPort := syscall.Ntohs(uint16(readNativeUint32(row[s.port : s.port+4]))) 0,
if srcPort != port { uintptr(family),
continue 4, // TCP_TABLE_OWNER_PID_CONNECTIONS
} 0,
)
srcIP := net.IP(row[s.ip : s.ip+s.ipSize]) case windows.IPPROTO_UDP:
// windows binds an unbound udp socket to 0.0.0.0/[::] while first sendto ret, _, _ = procGetExtendedUdpTable.Call(
if !ip.Equal(srcIP) && (!srcIP.IsUnspecified() || s.tcpState != -1) { uintptr(unsafe.Pointer(unsafe.SliceData(buf))),
continue uintptr(unsafe.Pointer(&bufSize)),
} 0,
uintptr(family),
pid := readNativeUint32(row[s.pid : s.pid+4]) 1, // UDP_TABLE_OWNER_PID
return pid, nil 0,
} )
return 0, ErrNotFound
}
func newSearcher(isV4, isTCP bool) *searcher {
var itemSize, port, ip, ipSize, pid int
tcpState := -1
switch {
case isV4 && isTCP:
// struct MIB_TCPROW_OWNER_PID
itemSize, port, ip, ipSize, pid, tcpState = 24, 8, 4, 4, 20, 0
case isV4 && !isTCP:
// struct MIB_UDPROW_OWNER_PID
itemSize, port, ip, ipSize, pid = 12, 4, 0, 4, 8
case !isV4 && isTCP:
// struct MIB_TCP6ROW_OWNER_PID
itemSize, port, ip, ipSize, pid, tcpState = 56, 20, 0, 16, 52, 48
case !isV4 && !isTCP:
// struct MIB_UDP6ROW_OWNER_PID
itemSize, port, ip, ipSize, pid = 28, 20, 0, 16, 24
}
return &searcher{
itemSize: itemSize,
port: port,
ip: ip,
ipSize: ipSize,
pid: pid,
tcpState: tcpState,
}
}
func getTransportTable(fn uintptr, family int, class int) ([]byte, error) {
for size, buf := uint32(8), make([]byte, 8); ; {
ptr := unsafe.Pointer(&buf[0])
err, _, _ := syscall.SyscallN(fn, uintptr(ptr), uintptr(unsafe.Pointer(&size)), 0, uintptr(family), uintptr(class), 0)
switch err {
case 0:
return buf, nil
case uintptr(syscall.ERROR_INSUFFICIENT_BUFFER):
buf = make([]byte, size)
default: default:
return nil, fmt.Errorf("syscall error: %d", err) return 0, errors.New("unsupported network")
} }
switch ret {
case 0:
buf = buf[:bufSize]
break loop
case uintptr(windows.ERROR_INSUFFICIENT_BUFFER):
pool.Put(buf)
buf = pool.Get(int(bufSize))
continue loop
default:
return 0, fmt.Errorf("syscall error: %d", ret)
} }
} }
func readNativeUint32(b []byte) uint32 { if len(buf) < int(unsafe.Sizeof(uint32(0))) {
return *(*uint32)(unsafe.Pointer(&b[0])) return 0, fmt.Errorf("invalid table size: %d", len(buf))
}
entriesSize := *(*uint32)(unsafe.Pointer(&buf[0]))
switch protocol {
case windows.IPPROTO_TCP:
if family == windows.AF_INET {
type MibTcpRowOwnerPid struct {
State uint32
LocalAddr [4]byte
LocalPort uint32
RemoteAddr [4]byte
RemotePort uint32
OwningPid uint32
}
if uint32(len(buf))-4 < entriesSize*uint32(unsafe.Sizeof(MibTcpRowOwnerPid{})) {
return 0, fmt.Errorf("invalid tables size: %d", len(buf))
}
entries := unsafe.Slice((*MibTcpRowOwnerPid)(unsafe.Pointer(&buf[4])), entriesSize)
for _, entry := range entries {
localAddr := netip.AddrFrom4(entry.LocalAddr)
localPort := windows.Ntohs(uint16(entry.LocalPort))
remoteAddr := netip.AddrFrom4(entry.RemoteAddr)
remotePort := windows.Ntohs(uint16(entry.RemotePort))
if localAddr == from.Addr() && remoteAddr == to.Addr() && localPort == from.Port() && remotePort == to.Port() {
return entry.OwningPid, nil
}
}
} else {
type MibTcp6RowOwnerPid struct {
LocalAddr [16]byte
LocalScopeID uint32
LocalPort uint32
RemoteAddr [16]byte
RemoteScopeID uint32
RemotePort uint32
State uint32
OwningPid uint32
}
if uint32(len(buf))-4 < entriesSize*uint32(unsafe.Sizeof(MibTcp6RowOwnerPid{})) {
return 0, fmt.Errorf("invalid tables size: %d", len(buf))
}
entries := unsafe.Slice((*MibTcp6RowOwnerPid)(unsafe.Pointer(&buf[4])), entriesSize)
for _, entry := range entries {
localAddr := netip.AddrFrom16(entry.LocalAddr)
localPort := windows.Ntohs(uint16(entry.LocalPort))
remoteAddr := netip.AddrFrom16(entry.RemoteAddr)
remotePort := windows.Ntohs(uint16(entry.RemotePort))
if localAddr == from.Addr() && remoteAddr == to.Addr() && localPort == from.Port() && remotePort == to.Port() {
return entry.OwningPid, nil
}
}
}
case windows.IPPROTO_UDP:
if family == windows.AF_INET {
type MibUdpRowOwnerPid struct {
LocalAddr [4]byte
LocalPort uint32
OwningPid uint32
}
if uint32(len(buf))-4 < entriesSize*uint32(unsafe.Sizeof(MibUdpRowOwnerPid{})) {
return 0, fmt.Errorf("invalid tables size: %d", len(buf))
}
entries := unsafe.Slice((*MibUdpRowOwnerPid)(unsafe.Pointer(&buf[4])), entriesSize)
for _, entry := range entries {
localAddr := netip.AddrFrom4(entry.LocalAddr)
localPort := windows.Ntohs(uint16(entry.LocalPort))
if (localAddr == from.Addr() || localAddr.IsUnspecified()) && localPort == from.Port() {
return entry.OwningPid, nil
}
}
} else {
type MibUdp6RowOwnerPid struct {
LocalAddr [16]byte
LocalScopeId uint32
LocalPort uint32
OwningPid uint32
}
if uint32(len(buf))-4 < entriesSize*uint32(unsafe.Sizeof(MibUdp6RowOwnerPid{})) {
return 0, fmt.Errorf("invalid tables size: %d", len(buf))
}
entries := unsafe.Slice((*MibUdp6RowOwnerPid)(unsafe.Pointer(&buf[4])), entriesSize)
for _, entry := range entries {
localAddr := netip.AddrFrom16(entry.LocalAddr)
localPort := windows.Ntohs(uint16(entry.LocalPort))
if (localAddr == from.Addr() || localAddr.IsUnspecified()) && localPort == from.Port() {
return entry.OwningPid, nil
}
}
}
default:
return 0, ErrInvalidNetwork
}
return 0, ErrNotFound
} }
func getExecPathFromPID(pid uint32) (string, error) { func getExecPathFromPID(pid uint32) (string, error) {
@ -207,17 +217,13 @@ func getExecPathFromPID(pid uint32) (string, error) {
} }
defer windows.CloseHandle(h) defer windows.CloseHandle(h)
buf := make([]uint16, syscall.MAX_LONG_PATH) buf := make([]uint16, windows.MAX_LONG_PATH)
size := uint32(len(buf)) size := uint32(len(buf))
r1, _, err := syscall.SyscallN(
queryProcName, err = windows.QueryFullProcessImageName(h, 0, &buf[0], &size)
uintptr(h), if err != nil {
uintptr(1),
uintptr(unsafe.Pointer(&buf[0])),
uintptr(unsafe.Pointer(&size)),
)
if r1 == 0 {
return "", err return "", err
} }
return syscall.UTF16ToString(buf[:size]), nil
return windows.UTF16ToString(buf[:size]), nil
} }

View File

@ -69,6 +69,7 @@ type DNS struct {
FakeIPRange *fakeip.Pool FakeIPRange *fakeip.Pool
Hosts *trie.DomainTrie Hosts *trie.DomainTrie
NameServerPolicy map[string]dns.NameServer NameServerPolicy map[string]dns.NameServer
SearchDomains []string
} }
// FallbackFilter config // FallbackFilter config
@ -117,6 +118,7 @@ type RawDNS struct {
FakeIPFilter []string `yaml:"fake-ip-filter"` FakeIPFilter []string `yaml:"fake-ip-filter"`
DefaultNameserver []string `yaml:"default-nameserver"` DefaultNameserver []string `yaml:"default-nameserver"`
NameServerPolicy map[string]string `yaml:"nameserver-policy"` NameServerPolicy map[string]string `yaml:"nameserver-policy"`
SearchDomains []string `yaml:"search-domains"`
} }
type RawFallbackFilter struct { type RawFallbackFilter struct {
@ -564,7 +566,7 @@ func parseNameServer(servers []string) ([]dns.NameServer, error) {
addr, err = hostWithDefaultPort(u.Host, "853") addr, err = hostWithDefaultPort(u.Host, "853")
dnsNetType = "tcp-tls" // DNS over TLS dnsNetType = "tcp-tls" // DNS over TLS
case "https": case "https":
clearURL := url.URL{Scheme: "https", Host: u.Host, Path: u.Path} clearURL := url.URL{Scheme: "https", Host: u.Host, Path: u.Path, User: u.User}
addr = clearURL.String() addr = clearURL.String()
dnsNetType = "https" // DNS over HTTPS dnsNetType = "https" // DNS over HTTPS
case "dhcp": case "dhcp":
@ -702,6 +704,18 @@ func parseDNS(rawCfg *RawConfig, hosts *trie.DomainTrie) (*DNS, error) {
dnsCfg.Hosts = hosts dnsCfg.Hosts = hosts
} }
if len(cfg.SearchDomains) != 0 {
for _, domain := range cfg.SearchDomains {
if strings.HasPrefix(domain, ".") || strings.HasSuffix(domain, ".") {
return nil, errors.New("search domains should not start or end with '.'")
}
if strings.Contains(domain, ":") {
return nil, errors.New("search domains are for ipv4 only and should not contain ports")
}
}
dnsCfg.SearchDomains = cfg.SearchDomains
}
return dnsCfg, nil return dnsCfg, nil
} }

View File

@ -103,6 +103,7 @@ type ProxyAdapter interface {
type DelayHistory struct { type DelayHistory struct {
Time time.Time `json:"time"` Time time.Time `json:"time"`
Delay uint16 `json:"delay"` Delay uint16 `json:"delay"`
MeanDelay uint16 `json:"meanDelay"`
} }
type Proxy interface { type Proxy interface {
@ -110,7 +111,7 @@ type Proxy interface {
Alive() bool Alive() bool
DelayHistory() []DelayHistory DelayHistory() []DelayHistory
LastDelay() uint16 LastDelay() uint16
URLTest(ctx context.Context, url string) (uint16, error) URLTest(ctx context.Context, url string) (uint16, uint16, error)
// Deprecated: use DialContext instead. // Deprecated: use DialContext instead.
Dial(metadata *Metadata) (Conn, error) Dial(metadata *Metadata) (Conn, error)

View File

@ -3,7 +3,7 @@ package constant
import ( import (
"net" "net"
"github.com/gofrs/uuid" "github.com/gofrs/uuid/v5"
) )
type PlainContext interface { type PlainContext interface {

View File

@ -3,13 +3,13 @@ package constant
import ( import (
"encoding/json" "encoding/json"
"errors" "errors"
"fmt"
) )
// DNSModeMapping is a mapping for EnhancedMode enum // DNSModeMapping is a mapping for EnhancedMode enum
var DNSModeMapping = map[string]DNSMode{ var DNSModeMapping = map[string]DNSMode{
DNSNormal.String(): DNSNormal, DNSNormal.String(): DNSNormal,
DNSFakeIP.String(): DNSFakeIP, DNSFakeIP.String(): DNSFakeIP,
DNSMapping.String(): DNSMapping,
} }
const ( const (
@ -28,7 +28,7 @@ func (e *DNSMode) UnmarshalYAML(unmarshal func(any) error) error {
} }
mode, exist := DNSModeMapping[tp] mode, exist := DNSModeMapping[tp]
if !exist { if !exist {
return errors.New("invalid mode") return fmt.Errorf("invalid mode: %s", tp)
} }
*e = mode *e = mode
return nil return nil

View File

@ -3,6 +3,7 @@ package constant
import ( import (
"encoding/json" "encoding/json"
"net" "net"
"net/netip"
"strconv" "strconv"
"github.com/Dreamacro/clash/transport/socks5" "github.com/Dreamacro/clash/transport/socks5"
@ -72,6 +73,8 @@ type Metadata struct {
DNSMode DNSMode `json:"dnsMode"` DNSMode DNSMode `json:"dnsMode"`
ProcessPath string `json:"processPath"` ProcessPath string `json:"processPath"`
SpecialProxy string `json:"specialProxy"` SpecialProxy string `json:"specialProxy"`
OriginDst netip.AddrPort `json:"-"`
} }
func (m *Metadata) RemoteAddress() string { func (m *Metadata) RemoteAddress() string {

View File

@ -4,6 +4,7 @@ import (
"os" "os"
P "path" P "path"
"path/filepath" "path/filepath"
"strings"
) )
const Name = "clash" const Name = "clash"
@ -51,6 +52,18 @@ func (p *path) Resolve(path string) string {
return path return path
} }
// IsSubPath return true if path is a subpath of homedir
func (p *path) IsSubPath(path string) bool {
homedir := p.HomeDir()
path = p.Resolve(path)
rel, err := filepath.Rel(homedir, path)
if err != nil {
return false
}
return !strings.Contains(rel, "..")
}
func (p *path) MMDB() string { func (p *path) MMDB() string {
return P.Join(p.homeDir, "Country.mmdb") return P.Join(p.homeDir, "Country.mmdb")
} }

View File

@ -12,6 +12,7 @@ const (
DstPort DstPort
Process Process
ProcessPath ProcessPath
IPSet
MATCH MATCH
) )
@ -39,6 +40,8 @@ func (rt RuleType) String() string {
return "Process" return "Process"
case ProcessPath: case ProcessPath:
return "ProcessPath" return "ProcessPath"
case IPSet:
return "IPSet"
case MATCH: case MATCH:
return "Match" return "Match"
default: default:

View File

@ -5,7 +5,7 @@ import (
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/gofrs/uuid" "github.com/gofrs/uuid/v5"
) )
type ConnContext struct { type ConnContext struct {

View File

@ -1,7 +1,7 @@
package context package context
import ( import (
"github.com/gofrs/uuid" "github.com/gofrs/uuid/v5"
"github.com/miekg/dns" "github.com/miekg/dns"
) )

View File

@ -5,7 +5,7 @@ import (
C "github.com/Dreamacro/clash/constant" C "github.com/Dreamacro/clash/constant"
"github.com/gofrs/uuid" "github.com/gofrs/uuid/v5"
) )
type PacketConnContext struct { type PacketConnContext struct {

View File

@ -87,9 +87,15 @@ func withMapping(mapping *cache.LruCache) middleware {
case *D.A: case *D.A:
ip = a.A ip = a.A
ttl = a.Hdr.Ttl ttl = a.Hdr.Ttl
if !ip.IsGlobalUnicast() {
continue
}
case *D.AAAA: case *D.AAAA:
ip = a.AAAA ip = a.AAAA
ttl = a.Hdr.Ttl ttl = a.Hdr.Ttl
if !ip.IsGlobalUnicast() {
continue
}
default: default:
continue continue
} }
@ -181,9 +187,6 @@ func newHandler(resolver *Resolver, mapper *ResolverEnhancer) handler {
if mapper.mode == C.DNSFakeIP { if mapper.mode == C.DNSFakeIP {
middlewares = append(middlewares, withFakeIP(mapper.fakePool)) middlewares = append(middlewares, withFakeIP(mapper.fakePool))
}
if mapper.mode != C.DNSNormal {
middlewares = append(middlewares, withMapping(mapper.mapping)) middlewares = append(middlewares, withMapping(mapper.mapping))
} }

View File

@ -39,6 +39,7 @@ type Resolver struct {
group singleflight.Group group singleflight.Group
lruCache *cache.LruCache lruCache *cache.LruCache
policy *trie.DomainTrie policy *trie.DomainTrie
searchDomains []string
} }
// LookupIP request with TypeA and TypeAAAA, priority return TypeA // LookupIP request with TypeA and TypeAAAA, priority return TypeA
@ -140,9 +141,14 @@ func (r *Resolver) ExchangeContext(ctx context.Context, m *D.Msg) (msg *D.Msg, e
msg = cache.(*D.Msg).Copy() msg = cache.(*D.Msg).Copy()
if expireTime.Before(now) { if expireTime.Before(now) {
setMsgTTL(msg, uint32(1)) // Continue fetch setMsgTTL(msg, uint32(1)) // Continue fetch
go r.exchangeWithoutCache(ctx, m) go func() {
ctx, cancel := context.WithTimeout(context.Background(), resolver.DefaultDNSTimeout)
r.exchangeWithoutCache(ctx, m)
cancel()
}()
} else { } else {
setMsgTTL(msg, uint32(time.Until(expireTime).Seconds())) // updating TTL by subtracting common delta time from each DNS record
updateMsgTTL(msg, uint32(time.Until(expireTime).Seconds()))
} }
return return
} }
@ -161,7 +167,7 @@ func (r *Resolver) exchangeWithoutCache(ctx context.Context, m *D.Msg) (msg *D.M
msg := result.(*D.Msg) msg := result.(*D.Msg)
putMsgToCache(r.lruCache, q.String(), msg) putMsgToCache(r.lruCache, q.String(), q, msg)
}() }()
isIPReq := isIPRequest(q) isIPReq := isIPRequest(q)
@ -285,17 +291,34 @@ func (r *Resolver) lookupIP(ctx context.Context, host string, dnsType uint16) ([
query := &D.Msg{} query := &D.Msg{}
query.SetQuestion(D.Fqdn(host), dnsType) query.SetQuestion(D.Fqdn(host), dnsType)
msg, err := r.Exchange(query) msg, err := r.ExchangeContext(ctx, query)
if err != nil { if err != nil {
return nil, err return nil, err
} }
ips := msgToIP(msg) ips := msgToIP(msg)
if len(ips) == 0 { if len(ips) != 0 {
return ips, nil
} else if len(r.searchDomains) == 0 {
return nil, resolver.ErrIPNotFound return nil, resolver.ErrIPNotFound
} }
// query provided search domains serially
for _, domain := range r.searchDomains {
q := &D.Msg{}
q.SetQuestion(D.Fqdn(fmt.Sprintf("%s.%s", host, domain)), dnsType)
msg, err := r.ExchangeContext(ctx, q)
if err != nil {
return nil, err
}
ips := msgToIP(msg)
if len(ips) != 0 {
return ips, nil return ips, nil
} }
}
return nil, resolver.ErrIPNotFound
}
func (r *Resolver) msgToDomain(msg *D.Msg) string { func (r *Resolver) msgToDomain(msg *D.Msg) string {
if len(msg.Question) > 0 { if len(msg.Question) > 0 {
@ -336,6 +359,7 @@ type Config struct {
Pool *fakeip.Pool Pool *fakeip.Pool
Hosts *trie.DomainTrie Hosts *trie.DomainTrie
Policy map[string]NameServer Policy map[string]NameServer
SearchDomains []string
} }
func NewResolver(config Config) *Resolver { func NewResolver(config Config) *Resolver {
@ -349,6 +373,7 @@ func NewResolver(config Config) *Resolver {
main: transform(config.Main, defaultResolver), main: transform(config.Main, defaultResolver),
lruCache: cache.New(cache.WithSize(4096), cache.WithStale(true)), lruCache: cache.New(cache.WithSize(4096), cache.WithStale(true)),
hosts: config.Hosts, hosts: config.Hosts,
searchDomains: config.SearchDomains,
} }
if len(config.Fallback) != 0 { if len(config.Fallback) != 0 {

View File

@ -14,11 +14,28 @@ import (
"github.com/Dreamacro/clash/log" "github.com/Dreamacro/clash/log"
D "github.com/miekg/dns" D "github.com/miekg/dns"
"github.com/samber/lo"
) )
func putMsgToCache(c *cache.LruCache, key string, msg *D.Msg) { func minimalTTL(records []D.RR) uint32 {
return lo.MinBy(records, func(r1 D.RR, r2 D.RR) bool {
return r1.Header().Ttl < r2.Header().Ttl
}).Header().Ttl
}
func updateTTL(records []D.RR, ttl uint32) {
if len(records) == 0 {
return
}
delta := minimalTTL(records) - ttl
for i := range records {
records[i].Header().Ttl = lo.Clamp(records[i].Header().Ttl-delta, 1, records[i].Header().Ttl)
}
}
func putMsgToCache(c *cache.LruCache, key string, q D.Question, msg *D.Msg) {
// skip dns cache for acme challenge // skip dns cache for acme challenge
if q := msg.Question[0]; q.Qtype == D.TypeTXT && strings.HasPrefix(q.Name, "_acme-challenge") { if q.Qtype == D.TypeTXT && strings.HasPrefix(q.Name, "_acme-challenge.") {
log.Debugln("[DNS] dns cache ignored because of acme challenge for: %s", q.Name) log.Debugln("[DNS] dns cache ignored because of acme challenge for: %s", q.Name)
return return
} }
@ -26,11 +43,11 @@ func putMsgToCache(c *cache.LruCache, key string, msg *D.Msg) {
var ttl uint32 var ttl uint32
switch { switch {
case len(msg.Answer) != 0: case len(msg.Answer) != 0:
ttl = msg.Answer[0].Header().Ttl ttl = minimalTTL(msg.Answer)
case len(msg.Ns) != 0: case len(msg.Ns) != 0:
ttl = msg.Ns[0].Header().Ttl ttl = minimalTTL(msg.Ns)
case len(msg.Extra) != 0: case len(msg.Extra) != 0:
ttl = msg.Extra[0].Header().Ttl ttl = minimalTTL(msg.Extra)
default: default:
log.Debugln("[DNS] response msg empty: %#v", msg) log.Debugln("[DNS] response msg empty: %#v", msg)
return return
@ -53,6 +70,12 @@ func setMsgTTL(msg *D.Msg, ttl uint32) {
} }
} }
func updateMsgTTL(msg *D.Msg, ttl uint32) {
updateTTL(msg.Answer, ttl)
updateTTL(msg.Ns, ttl)
updateTTL(msg.Extra, ttl)
}
func isIPRequest(q D.Question) bool { func isIPRequest(q D.Question) bool {
return q.Qclass == D.ClassINET && (q.Qtype == D.TypeA || q.Qtype == D.TypeAAAA) return q.Qclass == D.ClassINET && (q.Qtype == D.TypeA || q.Qtype == D.TypeAAAA)
} }

47
docs/.vitepress/config.ts Normal file
View File

@ -0,0 +1,47 @@
import { defineConfig } from 'vitepress'
import locales from './locales'
// https://vitepress.dev/reference/site-config
export default defineConfig({
title: 'Clash',
base: '/clash/',
head: [
[
'link',
{ rel: 'icon', type: "image/x-icon", href: '/clash/logo.png' }
],
],
locales: locales.locales,
lastUpdated: true,
themeConfig: {
search: {
provider: 'local',
options: {
locales: {
zh_CN: {
translations: {
button: {
buttonText: '搜索文档',
buttonAriaLabel: '搜索文档'
},
modal: {
noResultsText: '无法找到相关结果',
resetButtonTitle: '清除查询条件',
footer: {
selectText: '选择',
navigateText: '切换'
}
}
}
}
},
}
}
},
})

View File

@ -0,0 +1,60 @@
import { createRequire } from 'module'
import { defineConfig } from 'vitepress'
import { generateSidebarChapter } from './side_bar.js'
const require = createRequire(import.meta.url)
const chapters = generateSidebarChapter('en_US', new Map([
['introduction', 'Introduction'],
['configuration', 'Configuration'],
['premium', 'Premium'],
['runtime', 'Runtime'],
['advanced-usages', 'Advanced Usages'],
]))
export default defineConfig({
lang: 'en-US',
description: 'A rule-based tunnel in Go.',
themeConfig: {
nav: nav(),
logo: '/logo.png',
lastUpdatedText: 'Last updated at',
sidebar: chapters,
socialLinks: [
{ icon: 'github', link: 'https://github.com/Dreamacro/clash' },
],
editLink: {
pattern: 'https://github.com/Dreamacro/clash/edit/master/docs/:path',
text: 'Edit this page on GitHub'
},
outline: {
level: 'deep',
label: 'On this page',
},
}
})
function nav() {
return [
{ text: 'Home', link: '/' },
{ text: 'Configuration', link: '/configuration/configuration-reference' },
{
text: 'Download',
items: [
{ text: 'Open-source Edition', link: 'https://github.com/Dreamacro/clash/releases/' },
{ text: 'Premium Edition', link: 'https://github.com/Dreamacro/clash/releases/tag/premium' },
]
}
]
}

View File

@ -0,0 +1,20 @@
import { defineConfig } from 'vitepress'
import en_US from './en_US'
import zh_CN from './zh_CN'
export default defineConfig({
locales: {
root: {
label: 'English',
lang: en_US.lang,
themeConfig: en_US.themeConfig,
description: en_US.description
},
zh_CN: {
label: '简体中文',
lang: zh_CN.lang,
themeConfig: zh_CN.themeConfig,
description: zh_CN.description
}
}
})

View File

@ -0,0 +1,78 @@
import directoryTree from 'directory-tree'
import fs from 'fs'
import metadataParser from 'markdown-yaml-metadata-parser'
function getMetadataFromDoc(path: string): { sidebarTitle?: string, sidebarOrder?: number } {
const fileContents = fs.readFileSync(path, 'utf8')
return metadataParser(fileContents).metadata
}
export function generateSidebarChapter(locale:string, chapterDirName: Map<string,string>): any[] {
if (chapterDirName.size < 1) {
console.error(chapterDirName)
throw new Error(`Could not genereate sidebar: chapterDirName is empty`)
}
var chapterPath = ''
var sidebar: any[] = []
for (const chapterDirKey of chapterDirName.keys()) {
if (locale !== 'en_US') {
chapterPath = `./${locale}/${chapterDirKey}`
} else {
chapterPath = `./${chapterDirKey}`
}
const tree = directoryTree(chapterPath)
if (!tree || !tree.children) {
console.error(tree)
throw new Error(`Could not genereate sidebar: invalid chapter at ${chapterPath}`)
}
let items: { sidebarOrder: number, text: string, link: string }[] = []
// Look into files in the chapter
for (const doc of tree.children) {
// make sure it's a .md file
if (doc.children || !doc.name.endsWith('.md'))
continue
const { sidebarOrder, sidebarTitle } = getMetadataFromDoc(doc.path)
if (!sidebarOrder)
throw new Error('Cannot find sidebarOrder in doc metadata: ' + doc.path)
if (!sidebarTitle)
throw new Error('Cannot find sidebarTitle in doc metadata: ' + doc.path)
if (chapterDirKey === 'introduction' && doc.name === '_dummy-index.md') {
// Override index page link
items.push({
sidebarOrder,
text: sidebarTitle,
link: '/' + (locale === 'en_US' ? '' : locale + '/')
})
} else {
items.push({
sidebarOrder,
text: sidebarTitle,
link: "/" + doc.path
})
}
}
items = items.sort((a, b) => a.sidebarOrder - b.sidebarOrder)
// remove dash and capitalize first character of each word as chapter title
const text = chapterDirName.get(chapterDirKey) || chapterDirKey.split('-').join(' ').replace(/\b\w/g, l => l.toUpperCase())
sidebar.push({
text,
collapsed: false,
items,
})
}
return sidebar
}

View File

@ -0,0 +1,60 @@
import { createRequire } from 'module'
import { defineConfig } from 'vitepress'
import { generateSidebarChapter } from './side_bar.js'
const require = createRequire(import.meta.url)
const chapters = generateSidebarChapter('zh_CN', new Map([
['introduction', '简介'],
['configuration', '配置'],
['premium', 'Premium 版本'],
['runtime', '运行时'],
['advanced-usages', '高级用法'],
]))
export default defineConfig({
lang: 'zh-CN',
description: '基于规则的 Go 网络隧道. ',
themeConfig: {
nav: nav(),
logo: '/logo.png',
lastUpdatedText: '最后更新于',
sidebar: chapters,
socialLinks: [
{ icon: 'github', link: 'https://github.com/Dreamacro/clash' },
],
editLink: {
pattern: 'https://github.com/Dreamacro/clash/edit/master/docs/:path',
text: '在 GitHub 中编辑此页面'
},
docFooter: { prev: '上一篇', next: '下一篇' },
outline: {
level: 'deep',
label: '页面导航',
},
}
})
function nav() {
return [
{ text: '主页', link: '/zh_CN/' },
{ text: '配置', link: '/zh_CN/configuration/configuration-reference' },
{
text: '下载',
items: [
{ text: 'GitHub 开源版', link: 'https://github.com/Dreamacro/clash/releases/' },
{ text: 'Premium 版本', link: 'https://github.com/Dreamacro/clash/releases/tag/premium' },
]
}
]
}

View File

@ -0,0 +1,59 @@
---
sidebarTitle: Integrating Clash in Golang Programs
sidebarOrder: 3
---
# Integrating Clash in Golang Programs
If clash does not fit your own usage, you can use Clash in your own Golang code.
There is already basic support:
```go
package main
import (
"context"
"fmt"
"io"
"net"
"github.com/Dreamacro/clash/adapter/outbound"
"github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/listener/socks"
)
func main() {
in := make(chan constant.ConnContext, 100)
defer close(in)
l, err := socks.New("127.0.0.1:10000", in)
if err != nil {
panic(err)
}
defer l.Close()
println("listen at:", l.Address())
direct := outbound.NewDirect()
for c := range in {
conn := c
metadata := conn.Metadata()
fmt.Printf("request incoming from %s to %s\n", metadata.SourceAddress(), metadata.RemoteAddress())
go func () {
remote, err := direct.DialContext(context.Background(), metadata)
if err != nil {
fmt.Printf("dial error: %s\n", err.Error())
return
}
relay(remote, conn.Conn())
}()
}
}
func relay(l, r net.Conn) {
go io.Copy(l, r)
io.Copy(r, l)
}
```

View File

@ -0,0 +1,93 @@
---
sidebarTitle: Rule-based OpenConnect
sidebarOrder: 2
---
# Rule-based OpenConnect
OpenConnect supports Cisco AnyConnect SSL VPN, Juniper Network Connect, Palo Alto Networks (PAN) GlobalProtect SSL VPN, Pulse Connect Secure SSL VPN, F5 BIG-IP SSL VPN, FortiGate SSL VPN and Array Networks SSL VPN.
For example, there would be a use case where your company uses Cisco AnyConnect for internal network access. Here I'll show you how you can use OpenConnect with policy routing powered by Clash.
First, [install vpn-slice](https://github.com/dlenski/vpn-slice#requirements). This tool overrides default routing table behaviour of OpenConnect. Simply saying, it stops the VPN from overriding your default routes.
Next you would have a script (let's say `tun0.sh`) similar to this:
```sh
#!/bin/bash
ANYCONNECT_HOST="vpn.example.com"
ANYCONNECT_USER="john"
ANYCONNECT_PASSWORD="foobar"
ROUTING_TABLE_ID="6667"
TUN_INTERFACE="tun0"
# Add --no-dtls if the server is in mainland China. UDP in China is choppy.
echo "$ANYCONNECT_PASSWORD" | \
openconnect \
--non-inter \
--passwd-on-stdin \
--protocol=anyconnect \
--interface $TUN_INTERFACE \
--script "vpn-slice
if [ \"\$reason\" = 'connect' ]; then
ip rule add from \$INTERNAL_IP4_ADDRESS table $ROUTING_TABLE_ID
ip route add default dev \$TUNDEV scope link table $ROUTING_TABLE_ID
elif [ \"\$reason\" = 'disconnect' ]; then
ip rule del from \$INTERNAL_IP4_ADDRESS table $ROUTING_TABLE_ID
ip route del default dev \$TUNDEV scope link table $ROUTING_TABLE_ID
fi" \
--user $ANYCONNECT_USER \
https://$ANYCONNECT_HOST
```
After that, we configure it as a systemd service. Create `/etc/systemd/system/tun0.service`:
```ini
[Unit]
Description=Cisco AnyConnect VPN
After=network-online.target
Conflicts=shutdown.target sleep.target
[Service]
Type=simple
ExecStart=/path/to/tun0.sh
KillSignal=SIGINT
Restart=always
RestartSec=3
StartLimitIntervalSec=0
[Install]
WantedBy=multi-user.target
```
Then we enable & start the service.
```shell
chmod +x /path/to/tun0.sh
systemctl daemon-reload
systemctl enable tun0
systemctl start tun0
```
From here you can look at the logs to see if it's running properly. Simple way is to look at if `tun0` interface has been created.
Similar to the Wireguard one, having an outbound to a TUN device is simple as adding a proxy group:
```yaml
proxy-groups:
- name: Cisco AnyConnect VPN
type: select
interface-name: tun0
proxies:
- DIRECT
```
... and it's ready to use! Add the desired rules:
```yaml
rules:
- DOMAIN-SUFFIX,internal.company.com,Cisco AnyConnect VPN
```
You should look at the debug level logs when something does not seem right.

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@ -0,0 +1,40 @@
---
sidebarTitle: Rule-based Wireguard
sidebarOrder: 1
---
# Rule-based Wireguard
Suppose your kernel supports Wireguard and you have it enabled. The `Table` option stops _wg-quick_ from overriding default routes.
Example `wg0.conf`:
```ini
[Interface]
PrivateKey = ...
Address = 172.16.0.1/32
MTU = ...
Table = off
PostUp = ip rule add from 172.16.0.1/32 table 6666
[Peer]
AllowedIPs = 0.0.0.0/0
AllowedIPs = ::/0
PublicKey = ...
Endpoint = ...
```
Then in Clash you would only need to have a DIRECT proxy group that has a specific outbound interface:
```yaml
proxy-groups:
- name: Wireguard
type: select
interface-name: wg0
proxies:
- DIRECT
rules:
- DOMAIN,google.com,Wireguard
```
This should perform better than whereas if Clash implemented its own userspace Wireguard client. Wireguard is supported in the kernel.

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---
sidebarTitle: Configuration Reference
sidebarOrder: 7
---
# Configuration Reference
```yaml
# Port of HTTP(S) proxy server on the local end
port: 7890
# Port of SOCKS5 proxy server on the local end
socks-port: 7891
# Transparent proxy server port for Linux and macOS (Redirect TCP and TProxy UDP)
# redir-port: 7892
# Transparent proxy server port for Linux (TProxy TCP and TProxy UDP)
# tproxy-port: 7893
# HTTP(S) and SOCKS4(A)/SOCKS5 server on the same port
# mixed-port: 7890
# authentication of local SOCKS5/HTTP(S) server
# authentication:
# - "user1:pass1"
# - "user2:pass2"
# Set to true to allow connections to the local-end server from
# other LAN IP addresses
# allow-lan: false
# This is only applicable when `allow-lan` is `true`
# '*': bind all IP addresses
# 192.168.122.11: bind a single IPv4 address
# "[aaaa::a8aa:ff:fe09:57d8]": bind a single IPv6 address
# bind-address: '*'
# Clash router working mode
# rule: rule-based packet routing
# global: all packets will be forwarded to a single endpoint
# direct: directly forward the packets to the Internet
mode: rule
# Clash by default prints logs to STDOUT
# info / warning / error / debug / silent
# log-level: info
# When set to false, resolver won't translate hostnames to IPv6 addresses
# ipv6: false
# RESTful web API listening address
external-controller: 127.0.0.1:9090
# A relative path to the configuration directory or an absolute path to a
# directory in which you put some static web resource. Clash core will then
# serve it at `http://{{external-controller}}/ui`.
# external-ui: folder
# Secret for the RESTful API (optional)
# Authenticate by spedifying HTTP header `Authorization: Bearer ${secret}`
# ALWAYS set a secret if RESTful API is listening on 0.0.0.0
# secret: ""
# Outbound interface name
# interface-name: en0
# fwmark on Linux only
# routing-mark: 6666
# Static hosts for DNS server and connection establishment (like /etc/hosts)
#
# Wildcard hostnames are supported (e.g. *.clash.dev, *.foo.*.example.com)
# Non-wildcard domain names have a higher priority than wildcard domain names
# e.g. foo.example.com > *.example.com > .example.com
# P.S. +.foo.com equals to .foo.com and foo.com
# hosts:
# '*.clash.dev': 127.0.0.1
# '.dev': 127.0.0.1
# 'alpha.clash.dev': '::1'
# profile:
# Store the `select` results in $HOME/.config/clash/.cache
# set false If you don't want this behavior
# when two different configurations have groups with the same name, the selected values are shared
# store-selected: true
# persistence fakeip
# store-fake-ip: false
# DNS server settings
# This section is optional. When not present, the DNS server will be disabled.
dns:
enable: false
listen: 0.0.0.0:53
# ipv6: false # when the false, response to AAAA questions will be empty
# These nameservers are used to resolve the DNS nameserver hostnames below.
# Specify IP addresses only
default-nameserver:
- 114.114.114.114
- 8.8.8.8
# enhanced-mode: fake-ip
fake-ip-range: 198.18.0.1/16 # Fake IP addresses pool CIDR
# use-hosts: true # lookup hosts and return IP record
# search-domains: [local] # search domains for A/AAAA record
# Hostnames in this list will not be resolved with fake IPs
# i.e. questions to these domain names will always be answered with their
# real IP addresses
# fake-ip-filter:
# - '*.lan'
# - localhost.ptlogin2.qq.com
# Supports UDP, TCP, DoT, DoH. You can specify the port to connect to.
# All DNS questions are sent directly to the nameserver, without proxies
# involved. Clash answers the DNS question with the first result gathered.
nameserver:
- 114.114.114.114 # default value
- 8.8.8.8 # default value
- tls://dns.rubyfish.cn:853 # DNS over TLS
- https://1.1.1.1/dns-query # DNS over HTTPS
- dhcp://en0 # dns from dhcp
# - '8.8.8.8#en0'
# When `fallback` is present, the DNS server will send concurrent requests
# to the servers in this section along with servers in `nameservers`.
# The answers from fallback servers are used when the GEOIP country
# is not `CN`.
# fallback:
# - tcp://1.1.1.1
# - 'tcp://1.1.1.1#en0'
# If IP addresses resolved with servers in `nameservers` are in the specified
# subnets below, they are considered invalid and results from `fallback`
# servers are used instead.
#
# IP address resolved with servers in `nameserver` is used when
# `fallback-filter.geoip` is true and when GEOIP of the IP address is `CN`.
#
# If `fallback-filter.geoip` is false, results from `nameserver` nameservers
# are always used if not match `fallback-filter.ipcidr`.
#
# This is a countermeasure against DNS pollution attacks.
# fallback-filter:
# geoip: true
# geoip-code: CN
# ipcidr:
# - 240.0.0.0/4
# domain:
# - '+.google.com'
# - '+.facebook.com'
# - '+.youtube.com'
# Lookup domains via specific nameservers
# nameserver-policy:
# 'www.baidu.com': '114.114.114.114'
# '+.internal.crop.com': '10.0.0.1'
proxies:
# Shadowsocks
# The supported ciphers (encryption methods):
# aes-128-gcm aes-192-gcm aes-256-gcm
# aes-128-cfb aes-192-cfb aes-256-cfb
# aes-128-ctr aes-192-ctr aes-256-ctr
# rc4-md5 chacha20-ietf xchacha20
# chacha20-ietf-poly1305 xchacha20-ietf-poly1305
- name: "ss1"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
# udp: true
- name: "ss2"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: obfs
plugin-opts:
mode: tls # or http
# host: bing.com
- name: "ss3"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: v2ray-plugin
plugin-opts:
mode: websocket # no QUIC now
# tls: true # wss
# skip-cert-verify: true
# host: bing.com
# path: "/"
# mux: true
# headers:
# custom: value
# vmess
# cipher support auto/aes-128-gcm/chacha20-poly1305/none
- name: "vmess"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# tls: true
# skip-cert-verify: true
# servername: example.com # priority over wss host
# network: ws
# ws-opts:
# path: /path
# headers:
# Host: v2ray.com
# max-early-data: 2048
# early-data-header-name: Sec-WebSocket-Protocol
- name: "vmess-h2"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
network: h2
tls: true
h2-opts:
host:
- http.example.com
- http-alt.example.com
path: /
- name: "vmess-http"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# network: http
# http-opts:
# # method: "GET"
# # path:
# # - '/'
# # - '/video'
# # headers:
# # Connection:
# # - keep-alive
- name: vmess-grpc
server: server
port: 443
type: vmess
uuid: uuid
alterId: 32
cipher: auto
network: grpc
tls: true
servername: example.com
# skip-cert-verify: true
grpc-opts:
grpc-service-name: "example"
# socks5
- name: "socks"
type: socks5
server: server
port: 443
# username: username
# password: password
# tls: true
# skip-cert-verify: true
# udp: true
# http
- name: "http"
type: http
server: server
port: 443
# username: username
# password: password
# tls: true # https
# skip-cert-verify: true
# sni: custom.com
# Snell
# Beware that there's currently no UDP support yet
- name: "snell"
type: snell
server: server
port: 44046
psk: yourpsk
# version: 2
# obfs-opts:
# mode: http # or tls
# host: bing.com
# Trojan
- name: "trojan"
type: trojan
server: server
port: 443
password: yourpsk
# udp: true
# sni: example.com # aka server name
# alpn:
# - h2
# - http/1.1
# skip-cert-verify: true
- name: trojan-grpc
server: server
port: 443
type: trojan
password: "example"
network: grpc
sni: example.com
# skip-cert-verify: true
udp: true
grpc-opts:
grpc-service-name: "example"
- name: trojan-ws
server: server
port: 443
type: trojan
password: "example"
network: ws
sni: example.com
# skip-cert-verify: true
udp: true
# ws-opts:
# path: /path
# headers:
# Host: example.com
# ShadowsocksR
# The supported ciphers (encryption methods): all stream ciphers in ss
# The supported obfses:
# plain http_simple http_post
# random_head tls1.2_ticket_auth tls1.2_ticket_fastauth
# The supported supported protocols:
# origin auth_sha1_v4 auth_aes128_md5
# auth_aes128_sha1 auth_chain_a auth_chain_b
- name: "ssr"
type: ssr
server: server
port: 443
cipher: chacha20-ietf
password: "password"
obfs: tls1.2_ticket_auth
protocol: auth_sha1_v4
# obfs-param: domain.tld
# protocol-param: "#"
# udp: true
proxy-groups:
# relay chains the proxies. proxies shall not contain a relay. No UDP support.
# Traffic: clash <-> http <-> vmess <-> ss1 <-> ss2 <-> Internet
- name: "relay"
type: relay
proxies:
- http
- vmess
- ss1
- ss2
# url-test select which proxy will be used by benchmarking speed to a URL.
- name: "auto"
type: url-test
proxies:
- ss1
- ss2
- vmess1
# tolerance: 150
# lazy: true
url: 'http://www.gstatic.com/generate_204'
interval: 300
# fallback selects an available policy by priority. The availability is tested by accessing an URL, just like an auto url-test group.
- name: "fallback-auto"
type: fallback
proxies:
- ss1
- ss2
- vmess1
url: 'http://www.gstatic.com/generate_204'
interval: 300
# load-balance: The request of the same eTLD+1 will be dial to the same proxy.
- name: "load-balance"
type: load-balance
proxies:
- ss1
- ss2
- vmess1
url: 'http://www.gstatic.com/generate_204'
interval: 300
# strategy: consistent-hashing # or round-robin
# select is used for selecting proxy or proxy group
# you can use RESTful API to switch proxy is recommended for use in GUI.
- name: Proxy
type: select
# disable-udp: true
# filter: 'someregex'
proxies:
- ss1
- ss2
- vmess1
- auto
# direct to another interfacename or fwmark, also supported on proxy
- name: en1
type: select
interface-name: en1
routing-mark: 6667
proxies:
- DIRECT
- name: UseProvider
type: select
use:
- provider1
proxies:
- Proxy
- DIRECT
proxy-providers:
provider1:
type: http
url: "url"
interval: 3600
path: ./provider1.yaml
health-check:
enable: true
interval: 600
# lazy: true
url: http://www.gstatic.com/generate_204
test:
type: file
path: /test.yaml
health-check:
enable: true
interval: 36000
url: http://www.gstatic.com/generate_204
tunnels:
# one line config
- tcp/udp,127.0.0.1:6553,114.114.114.114:53,proxy
- tcp,127.0.0.1:6666,rds.mysql.com:3306,vpn
# full yaml config
- network: [tcp, udp]
address: 127.0.0.1:7777
target: target.com
proxy: proxy
rules:
- DOMAIN-SUFFIX,google.com,auto
- DOMAIN-KEYWORD,google,auto
- DOMAIN,google.com,auto
- DOMAIN-SUFFIX,ad.com,REJECT
- SRC-IP-CIDR,192.168.1.201/32,DIRECT
# optional param "no-resolve" for IP rules (GEOIP, IP-CIDR, IP-CIDR6)
- IP-CIDR,127.0.0.0/8,DIRECT
- GEOIP,CN,DIRECT
- DST-PORT,80,DIRECT
- SRC-PORT,7777,DIRECT
- RULE-SET,apple,REJECT # Premium only
- MATCH,auto
```

72
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@ -0,0 +1,72 @@
---
sidebarTitle: Clash DNS
sidebarOrder: 6
---
# Clash DNS
Since some parts of Clash run on the Layer 3 (Network Layer), they would've been impossible to obtain domain names of the packets for rule-based routing.
*Enter fake-ip*. It enables rule-based routing, minimises the impact of DNS pollution attack and improves network performance, sometimes drastically.
## fake-ip
The concept of "fake IP" addresses is originated from [RFC 3089](https://tools.ietf.org/rfc/rfc3089):
> A "fake IP" address is used as a key to look up the corresponding "FQDN" information.
The default CIDR for the fake-ip pool is `198.18.0.1/16`, a reserved IPv4 address space, which can be changed in `dns.fake-ip-range`.
When a DNS request is sent to the Clash DNS, the core allocates a *free* fake-ip address from the pool, by managing an internal mapping of domain names and their fake-ip addresses.
Take an example of accessing `http://google.com` with your browser.
1. The browser asks Clash DNS for the IP address of `google.com`
2. Clash checks the internal mapping and returned `198.18.1.5`
3. The browser sends an HTTP request to `198.18.1.5` on `80/tcp`
4. When receiving the inbound packet for `198.18.1.5`, Clash looks up the internal mapping and realises the client is actually sending a packet to `google.com`
5. Depending on the rules:
1. Clash may just send the domain name to an outbound proxy like SOCKS5 or shadowsocks and establish the connection with the proxy server
2. or Clash might look for the real IP address of `google.com`, in the case of encountering a `SCRIPT`, `GEOIP`, `IP-CIDR` rule, or the case of DIRECT outbound
Being a confusing concept, I'll take another example of accessing `http://google.com` with the cURL utility:
```txt{2,3,5,6,8,9}
$ curl -v http://google.com
<---- cURL asks your system DNS (Clash) about the IP address of google.com
----> Clash decided 198.18.1.70 should be used as google.com and remembers it
* Trying 198.18.1.70:80...
<---- cURL connects to 198.18.1.70 tcp/80
----> Clash will accept the connection immediately, and..
* Connected to google.com (198.18.1.70) port 80 (#0)
----> Clash looks up in its memory and found 198.18.1.70 being google.com
----> Clash looks up in the rules and sends the packet via the matching outbound
> GET / HTTP/1.1
> Host: google.com
> User-Agent: curl/8.0.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Location: http://www.google.com/
< Content-Type: text/html; charset=UTF-8
< Content-Security-Policy-Report-Only: object-src 'none';base-uri 'self';script-src 'nonce-ahELFt78xOoxhySY2lQ34A' 'strict-dynamic' 'report-sample' 'unsafe-eval' 'unsafe-inline' https: http:;report-uri https://csp.withgoogle.com/csp/gws/other-hp
< Date: Thu, 11 May 2023 06:52:19 GMT
< Expires: Sat, 10 Jun 2023 06:52:19 GMT
< Cache-Control: public, max-age=2592000
< Server: gws
< Content-Length: 219
< X-XSS-Protection: 0
< X-Frame-Options: SAMEORIGIN
<
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
* Connection #0 to host google.com left intact
```
<!-- TODO: nameserver, fallback, fallback-filter, hosts, search-domains, fake-ip-filter, nameserver-policy -->

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@ -0,0 +1,76 @@
---
sidebarTitle: Getting Started
sidebarOrder: 2
---
# Getting Started
It's recommended that you read the [Introduction](/configuration/introduction) before proceeding. After you have a brief understanding of how Clash works, you can start writing your own configuration.
## Configuration Files
The main configuration file is called `config.yaml`. By default, Clash reads the configuration files at `$HOME/.config/clash`. If it doesn't exist, Clash will generate a minimal configuration file at that location.
If you want to place your configurations elsewhere (e.g. `/etc/clash`), you can use command-line option `-d` to specify a configuration directory:
```shell
clash -d . # current directory
clash -d /etc/clash
```
Or, you can use option `-f` to specify a configuration file:
```shell
clash -f ./config.yaml
clash -f /etc/clash/config.yaml
```
## Special Syntaxes
There are some special syntaxes in Clash configuration files, of which you might want to be aware:
### IPv6 Addresses
You should wrap IPv6 addresses in square brackets, for example:
```txt
[aaaa::a8aa:ff:fe09:57d8]
```
### DNS Wildcard Domain Matching
In some cases, you will need to match against wildcard domains. For example, when you're setting up [Clash DNS](/configuration/dns), you might want to match against all subdomains of `localdomain`.
Clash do offer support on matching different levels of wildcard domains in the DNS configuration, while the syntaxes defined below:
::: tip
Any domain with these characters should be wrapped with single quotes (`'`). For example, `'*.google.com'`.
Static domain has a higher priority than wildcard domain (foo.example.com > *.example.com > .example.com).
:::
Use an asterisk (`*`) to match against a single-level wildcard subdomain.
| Expression | Matches | Does Not Match |
| ---------- | ------- | -------------- |
| `*.google.com` | `www.google.com` | `google.com` |
| `*.bar.google.com` | `foo.bar.google.com` | `bar.google.com` |
| `*.*.google.com` | `thoughtful.sandbox.google.com` | `one.two.three.google.com` |
Use a dot sign (`.`) to match against multi-level wildcard subdomains.
| Expression | Matches | Does Not Match |
| ---------- | ------- | -------------- |
| `.google.com` | `www.google.com` | `google.com` |
| `.google.com` | `thoughtful.sandbox.google.com` | `google.com` |
| `.google.com` | `one.two.three.google.com` | `google.com` |
Use a plus sign (`+`) to match against multi-level wildcard subdomains.
`+` wildcard works like DOMAIN-SUFFIX, you can quickly match multi level at a time.
| Expression | Matches |
| ---------- | ------- |
| `+.google.com` | `google.com` |
| `+.google.com` | `www.google.com` |
| `+.google.com` | `thoughtful.sandbox.google.com` |
| `+.google.com` | `one.two.three.google.com` |

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---
sidebarTitle: Inbound
sidebarOrder: 3
---
# Inbound
Clash supports multiple inbound protocols, including:
- SOCKS5
- HTTP(S)
- Redirect TCP
- TProxy TCP
- TProxy UDP
- Linux TUN device (Premium only)
Connections to any inbound protocol listed above will be handled by the same internal rule-matching engine. That is to say, Clash does not (currently) support different rule sets for different inbounds.
## Configuration
```yaml
# Port of HTTP(S) proxy server on the local end
# port: 7890
# Port of SOCKS5 proxy server on the local end
# socks-port: 7891
# HTTP(S) and SOCKS4(A)/SOCKS5 server on the same port
mixed-port: 7890
# Transparent proxy server port for Linux and macOS (Redirect TCP and TProxy UDP)
# redir-port: 7892
# Transparent proxy server port for Linux (TProxy TCP and TProxy UDP)
# tproxy-port: 7893
# Allow clients other than 127.0.0.1 to connect to the inbounds
allow-lan: false
```
## The Mixed Port
The mixed port is a special port that supports both HTTP(S) and SOCKS5 protocols. You can have any programs that support either HTTP or SOCKS proxy to connect to this port, for example:
```shell
$ curl -x socks5h://127.0.0.1:7890 -v http://connect.rom.miui.com/generate_204
* Trying 127.0.0.1:7890...
* SOCKS5 connect to connect.rom.miui.com:80 (remotely resolved)
* SOCKS5 request granted.
* Connected to (nil) (127.0.0.1) port 7890 (#0)
> GET /generate_204 HTTP/1.1
> Host: connect.rom.miui.com
> User-Agent: curl/7.81.0
> Accept: */*
>
* Mark bundle as not supporting multiuse
< HTTP/1.1 204 No Content
< Date: Thu, 11 May 2023 06:18:22 GMT
< Connection: keep-alive
< Content-Type: text/plain
<
* Connection #0 to host (nil) left intact
```
## Redirect and TProxy
Redirect and TProxy are two different ways of implementing transparent proxying. They are both supported by Clash.
However, you most likely don't need to mess with these two inbounds - we recommend using [Clash Premium](/premium/introduction) if you want to use transparent proxying, as it has built-in support of the automatic management of the route table, rules and nftables.

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---
sidebarTitle: Introduction
sidebarOrder: 1
---
# Introduction
In this chapter, we'll cover the common features of Clash and how they should be used and configured.
Clash uses [YAML](https://yaml.org), _YAML Ain't Markup Language_, for configuration files. YAML is designed to be easy to be read, be written, and be interpreted by computers, and is commonly used for exact configuration files.
## Understanding how Clash works
Before proceeding, it's important to understand how Clash works, in which there are two critical components:
![](/assets/connection-flow.png)
<!-- https://excalidraw.com/clash-connection-flow#json=OHsOdaqAUPuuN7VPvdZ9Z,NT7rRrtzRgbVIM0tpkPnGA -->
### Inbound
Inbound is the component that listens on the local end. It works by opening a local port and listening for incoming connections. When a connection comes in, Clash looks up the rules that are configured in the configuration file, and decides which outbound that the connection should go next.
### Outbound
Outbound is the component that connects to the remote end. Depending on the configuration, it can be a specific network interface, a proxy server, or a [proxy group](./outbound#proxy-groups).
## Rule-based Routing
Clash supports rule-based routing, which means you can route packets to different outbounds based on the a variety of contraints. The rules can be defined in the `rules` section of the configuration file.
There's a number of available rule types, and each rule type has its own syntax. The general syntax of a rule is:
```txt
TYPE,ARGUMENT,POLICY(,no-resolve)
```
In the upcoming guides, you will learn more about how rules can be configured.

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---
sidebarTitle: Outbound
sidebarOrder: 4
---
# Outbound
There are several types of outbound targets in Clash. Each type has its own features and usage scenarios. In this page, we'll cover the common features of each type and how they should be used and configured.
[[toc]]
## Proxies
Proxies are some outbound targets that you can configure. Like proxy servers, you define destinations for the packets here.
### Shadowsocks
Clash supports the following ciphers (encryption methods) for Shadowsocks:
| Family | Ciphers |
| ------ | ------- |
| AEAD | aes-128-gcm, aes-192-gcm, aes-256-gcm, chacha20-ietf-poly1305, xchacha20-ietf-poly1305 |
| Stream | aes-128-cfb, aes-192-cfb, aes-256-cfb, rc4-md5, chacha20-ietf, xchacha20 |
| Block | aes-128-ctr, aes-192-ctr, aes-256-ctr |
In addition, Clash also supports popular Shadowsocks plugins `obfs` and `v2ray-plugin`.
::: code-group
```yaml [basic]
- name: "ss1"
type: ss
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
# udp: true
```
```yaml [obfs]
- name: "ss2"
type: ss
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: obfs
plugin-opts:
mode: tls # or http
# host: bing.com
```
```yaml [ws (websocket)]
- name: "ss3"
type: ss
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: v2ray-plugin
plugin-opts:
mode: websocket # no QUIC now
# tls: true # wss
# skip-cert-verify: true
# host: bing.com
# path: "/"
# mux: true
# headers:
# custom: value
```
:::
### ShadowsocksR
Clash supports the infamous anti-censorship protocol ShadowsocksR as well. The supported ciphers:
| Family | Ciphers |
| ------ | ------- |
| Stream | aes-128-cfb, aes-192-cfb, aes-256-cfb, rc4-md5, chacha20-ietf, xchacha20 |
Supported obfuscation methods:
- plain
- http_simple
- http_post
- random_head
- tls1.2_ticket_auth
- tls1.2_ticket_fastauth
Supported protocols:
- origin
- auth_sha1_v4
- auth_aes128_md5
- auth_aes128_sha1
- auth_chain_a
- auth_chain_b
```yaml
- name: "ssr"
type: ssr
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
cipher: chacha20-ietf
password: "password"
obfs: tls1.2_ticket_auth
protocol: auth_sha1_v4
# obfs-param: domain.tld
# protocol-param: "#"
# udp: true
```
### Vmess
Clash supports the following ciphers (encryption methods) for Vmess:
- auto
- aes-128-gcm
- chacha20-poly1305
- none
::: code-group
```yaml [basic]
- name: "vmess"
type: vmess
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# tls: true
# skip-cert-verify: true
# servername: example.com # priority over wss host
# network: ws
# ws-opts:
# path: /path
# headers:
# Host: v2ray.com
# max-early-data: 2048
# early-data-header-name: Sec-WebSocket-Protocol
```
```yaml [HTTP]
- name: "vmess-http"
type: vmess
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# network: http
# http-opts:
# # method: "GET"
# # path:
# # - '/'
# # - '/video'
# # headers:
# # Connection:
# # - keep-alive
```
```yaml [HTTP/2]
- name: "vmess-h2"
type: vmess
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
network: h2
tls: true
h2-opts:
host:
- http.example.com
- http-alt.example.com
path: /
```
```yaml [gRPC]
- name: vmess-grpc
type: vmess
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
network: grpc
tls: true
servername: example.com
# skip-cert-verify: true
grpc-opts:
grpc-service-name: "example"
```
:::
### SOCKS5
In addition, Clash supports SOCKS5 outbound as well:
```yaml
- name: "socks"
type: socks5
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
# username: username
# password: password
# tls: true
# skip-cert-verify: true
# udp: true
```
### HTTP
Clash also supports HTTP outbound:
::: code-group
```yaml [HTTP]
- name: "http"
type: http
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
# username: username
# password: password
```
```yaml [HTTPS]
- name: "http"
type: http
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
tls: true
# skip-cert-verify: true
# sni: custom.com
# username: username
# password: password
```
:::
### Snell
Being an alternative protocol for anti-censorship, Clash has integrated support for Snell as well.
::: tip
Clash does not support Snell v4. ([#2466](https://github.com/Dreamacro/clash/issues/2466))
:::
```yaml
# No UDP support yet
- name: "snell"
type: snell
# interface-name: eth0
# routing-mark: 1234
server: server
port: 44046
psk: yourpsk
# version: 2
# obfs-opts:
# mode: http # or tls
# host: bing.com
```
### Trojan
Clash has built support for the popular protocol Trojan:
::: code-group
```yaml [basic]
- name: "trojan"
type: trojan
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
password: yourpsk
# udp: true
# sni: example.com # aka server name
# alpn:
# - h2
# - http/1.1
# skip-cert-verify: true
```
```yaml [gRPC]
- name: trojan-grpc
type: trojan
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
password: "example"
network: grpc
sni: example.com
# skip-cert-verify: true
udp: true
grpc-opts:
grpc-service-name: "example"
```
```yaml [ws (websocket)]
- name: trojan-ws
type: trojan
# interface-name: eth0
# routing-mark: 1234
server: server
port: 443
password: "example"
network: ws
sni: example.com
# skip-cert-verify: true
udp: true
# ws-opts:
# path: /path
# headers:
# Host: example.com
```
:::
## Proxy Groups
Proxy Groups are groups of proxies that you can use directly as a rule policy.
### relay
The request sent to this proxy group will be relayed through the specified proxy servers sequently. There's currently no UDP support on this. The specified proxy servers should not contain another relay.
### url-test
Clash benchmarks each proxy servers in the list, by sending HTTP HEAD requests to a specified URL through these servers periodically. It's possible to set a maximum tolerance value, benchmarking interval, and the target URL.
### fallback
Clash periodically tests the availability of servers in the list with the same mechanism of `url-test`. The first available server will be used.
### load-balance
The request to the same eTLD+1 will be dialed with the same proxy.
### select
The first server is by default used when Clash starts up. Users can choose the server to use with the RESTful API. In this mode, you can hardcode servers in the config or use [Proxy Providers](#proxy-providers).
Either way, sometimes you might as well just route packets with a direct connection. In this case, you can use the `DIRECT` outbound.
To use a different network interface, you will need to use a Proxy Group that contains a `DIRECT` outbound with the `interface-name` option set.
```yaml
- name: "My Wireguard Outbound"
type: select
interface-name: wg0
proxies: [ 'DIRECT' ]
```
## Proxy Providers
Proxy Providers give users the power to load proxy server lists dynamically, instead of hardcoding them in the configuration file. There are currently two sources for a proxy provider to load server list from:
- `http`: Clash loads the server list from a specified URL on startup. Clash periodically pulls the server list from remote if the `interval` option is set.
- `file`: Clash loads the server list from a specified location on the filesystem on startup.
Health check is available for both modes, and works exactly like `fallback` in Proxy Groups. The configuration format for the server list files is also exactly the same in the main configuration file:
::: code-group
```yaml [config.yaml]
proxy-providers:
provider1:
type: http
url: "url"
interval: 3600
path: ./provider1.yaml
# filter: 'a|b' # golang regex string
health-check:
enable: true
interval: 600
# lazy: true
url: http://www.gstatic.com/generate_204
test:
type: file
path: /test.yaml
health-check:
enable: true
interval: 36000
url: http://www.gstatic.com/generate_204
```
```yaml [test.yaml]
proxies:
- name: "ss1"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
- name: "ss2"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: obfs
plugin-opts:
mode: tls
```
:::

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---
sidebarTitle: Rules
sidebarOrder: 5
---
# Rules
In the Getting Started guide, we covered the basics of rule-based matching in Clash. In this chapter, we'll cover all available rule types in the latest version of Clash.
```txt
TYPE,ARGUMENT,POLICY(,no-resolve)
```
The `no-resolve` option is optional, and it's used to skip DNS resolution for the rule. It's useful when you want to use `GEOIP`, `IP-CIDR`, `IP-CIDR6`, `SCRIPT` rules, but don't want to resolve the domain name to an IP address just yet.
[[toc]]
## Policy
There are four types of POLICY for now, in which:
- DIRECT: directly connects to the target through `interface-name` (does not lookup system route table)
- REJECT: drops the packet
- Proxy: routes the packet to the specified proxy server
- Proxy Group: routes the packet to the specified proxy group
## Types of rules
There are a number of rules where one might find useful. The following section covers each rule type and how they should be used.
### DOMAIN
`DOMAIN,www.google.com,policy` routes only `www.google.com` to `policy`.
### DOMAIN-SUFFIX
`DOMAIN-SUFFIX,youtube.com,policy` routes any domain names that ends with `youtube.com`.
In this case, `www.youtube.com` and `foo.bar.youtube.com` will be routed to `policy`.
### DOMAIN-KEYWORD
`DOMAIN-KEYWORD,google,policy` routes any domain names to policy that contains `google`.
In this case, `www.google.com` or `googleapis.com` are routed to `policy`.
### GEOIP
GEOIP rules are used to route packets based on the **country code** of the target IP address. Clash uses [MaxMind GeoLite2](https://dev.maxmind.com/geoip/geoip2/geolite2/) database for this feature.
::: warning
When encountering this rule, Clash will resolve the domain name to an IP address and then look up the country code of the IP address. If you want to skip the DNS resolution, use `no-resolve` option.
:::
`GEOIP,CN,policy` routes any packets destined to a China IP address to `policy`.
### IP-CIDR
IP-CIDR rules are used to route packets based on the **destination IPv4 address** of the packet.
::: warning
When encountering this rule, Clash will resolve the domain name to an IP address. If you want to skip the DNS resolution, use `no-resolve` option.
:::
`IP-CIDR,127.0.0.0/8,DIRECT` routes any packets destined to `127.0.0.0/8` to the `DIRECT` outbound.
### IP-CIDR6
IP-CIDR6 rules are used to route packets based on the **destination IPv6 address** of the packet.
::: warning
When encountering this rule, Clash will resolve the domain name to an IP address. If you want to skip the DNS resolution, use `no-resolve` option.
:::
`IP-CIDR6,2620:0:2d0:200::7/32,policy` routes any packets destined to `2620:0:2d0:200::7/32` to `policy`.
### SRC-IP-CIDR
SRC-IP-CIDR rules are used to route packets based on the **source IPv4 address** of the packet.
`SRC-IP-CIDR,192.168.1.201/32,DIRECT` routes any packets **from** `192.168.1.201/32` to the `DIRECT` policy.
### SRC-PORT
SRC-PORT rules are used to route packets based on the **source port** of the packet.
`SRC-PORT,80,policy` routes any packets **from** the port 80 to `policy`.
### DST-PORT
DST-PORT rules are used to route packets based on the **destination port** of the packet.
`DST-PORT,80,policy` routes any packets **to** the port 80 to `policy`.
### PROCESS-NAME
PROCESS-NAME rules are used to route packets based on the name of process that is sending the packet.
::: warning
Currently, only macOS, Linux, FreeBSD and Windows are supported.
:::
`PROCESS-NAME,nc,DIRECT` routes all packets from the process `nc` to the `DIRECT` outbound.
### PROCESS-PATH
PROCESS-PATH rules are used to route packets based on the PATH of process that is sending the packet.
::: warning
Currently, only macOS, Linux, FreeBSD and Windows are supported.
:::
`PROCESS-PATH,/bin/sh,DIRECT` routes all packets from the process `/bin/sh` to the `DIRECT` outbound.
### IPSET
IPSET rules are used to match against an IP set and route packets based on the result. According to the [official website of IPSET](https://ipset.netfilter.org/):
> IP sets are a framework inside the Linux kernel, which can be administered by the ipset utility. Depending on the type, an IP set may store IP addresses, networks, (TCP/UDP) port numbers, MAC addresses, interface names or combinations of them in a way, which ensures lightning speed when matching an entry against a set.
Therefore, this feature only works on Linux and requires `ipset` to be installed.
::: warning
When encountering this rule, Clash will resolve the domain name to an IP address. If you want to skip the DNS resolution, use `no-resolve` option.
:::
`IPSET,chinaip,DIRECT` routes all packets with destination IPs matching the `chinaip` IPSET to DIRECT outbound.
### RULE-SET
::: info
This feature is only available in the [Premium](/premium/introduction) edtion.
:::
RULE-SET rules are used to route packets based on the result of a [rule provider](/premium/rule-providers). When Clash encounters this rule, it loads the rules from the specified rule provider and then matches the packet against the rules. If the packet matches any of the rules, the packet will be routed to the specified policy, otherwise the rule is skipped.
::: warning
When encountering RULE-SET, Clash will resolve the domain name to an IP address **when the ruleset is of type IPCIDR**. If you want to skip the DNS resolution, use `no-resolve` option for the RULE-SET entry.
:::
`RULE-SET,my-rule-provider,DIRECT` loads all rules from `my-rule-provider` and sends the matched packets to the `DIRECT` outbound.
### SCRIPT
::: info
This feature is only available in the [Premium](/premium/introduction) edtion.
:::
SCRIPT rules are special rules that are used to route packets based on the result of a [script shortcut](/premium/script-shortcuts). When Clash encounters this rule, it evaluates the expression. If it returns `true`, the packet will be routed to the specified policy, otherwise the rule is skipped.
::: warning
When encountering this rule, Clash will resolve the domain name to an IP address. If you want to skip the DNS resolution, use `no-resolve` option.
:::
`SCRIPT,SHORTCUT-NAME,policy` routes any packets to `policy` if they have the shortcut evaluated `true`.
### MATCH
`MATCH,policy` routes the rest of the packets to `policy`. This rule is **required** and is usually used as the last rule.

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<!-- This is the index page, linked by the dummy sidebar item at Introduction/_dummy-index.md -->
# What is Clash?
Welcome to the official knowledge base of the Clash core project ("Clash").
Clash is a cross-platform rule-based proxy utility that runs on the network and application layer, supporting various proxy and anti-censorship protocols out-of-the-box.
It has been adopted widely by the Internet users in some countries and regions where the Internet is heavily censored or blocked. Either way, Clash can be used by anyone who wants to improve their Internet experience.
There are currently two editions of Clash:
- [Clash](https://github.com/Dreamacro/clash): the open-source version released at [github.com/Dreamacro/clash](https://github.com/Dreamacro/clash)
- [Clash Premium](https://github.com/Dreamacro/clash/releases/tag/premium): proprietary core with [TUN support and more](/premium/introduction) (free of charge)
While this wiki covers both, however, the use of Clash could be challenging for the average users. Those might want to consider using a GUI client instead, and we do have some recommendations:
- [Clash for Windows](https://github.com/Fndroid/clash_for_windows_pkg/releases) (Windows and macOS)
- [Clash for Android](https://github.com/Kr328/ClashForAndroid)
- [ClashX](https://github.com/yichengchen/clashX) or [ClashX Pro](https://install.appcenter.ms/users/clashx/apps/clashx-pro/distribution_groups/public) (macOS)
## Feature Overview
- Inbound: HTTP, HTTPS, SOCKS5 server, TUN device*
- Outbound: Shadowsocks(R), VMess, Trojan, Snell, SOCKS5, HTTP(S), Wireguard*
- Rule-based Routing: dynamic scripting, domain, IP addresses, process name and more*
- Fake-IP DNS: minimises impact on DNS pollution and improves network performance
- Transparent Proxy: Redirect TCP and TProxy TCP/UDP with automatic route table/rule management*
- Proxy Groups: automatic fallback, load balancing or latency testing
- Remote Providers: load remote proxy lists dynamically
- RESTful API: update configuration in-place via a comprehensive API
<!-- markdownlint-disable MD033 -->
<small>\*: Only available in the free-of-charge Premium edition.</small>
<!-- markdownlint-enable MD033 -->
## License
Clash is released under the [GPL-3.0](https://github.com/Dreamacro/clash/blob/master/LICENSE) open-source license. Prior to [v0.16.0](https://github.com/Dreamacro/clash/releases/tag/v0.16.0) or commit [e5284c](https://github.com/Dreamacro/clash/commit/e5284cf647717a8087a185d88d15a01096274bc2), it was licensed under the MIT license.

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sidebarTitle: What is Clash?
sidebarOrder: 1
---
<!-- This file is used as a dummy sidebar item that always links to / -->

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---
sidebarTitle: Frequently Asked Questions
sidebarOrder: 4
---
# Frequently Asked Questions
Here we have some common questions people ask. If you have any questions not listed here, feel free to [open an issue](https://github.com/Dreamacro/clash/issues/new/choose).
[[toc]]
## What is the difference between amd64 and amd64-v3?
Quoting from [golang/go](https://github.com/golang/go/wiki/MinimumRequirements#amd64):
> Until Go 1.17, the Go compiler always generated x86 binaries that could be executed by any 64-bit x86 processor.
>
> Go 1.18 introduced [4 architectural levels](https://en.wikipedia.org/wiki/X86-64#Microarchitecture_levels) for AMD64.
> Each level differs in the set of x86 instructions that the compiler can include in the generated binaries:
>
> * GOAMD64=v1 (default): The baseline. Exclusively generates instructions that all 64-bit x86 processors can execute.
> * GOAMD64=v2: all v1 instructions, plus CMPXCHG16B, LAHF, SAHF, POPCNT, SSE3, SSE4.1, SSE4.2, SSSE3.
> * GOAMD64=v3: all v2 instructions, plus AVX, AVX2, BMI1, BMI2, F16C, FMA, LZCNT, MOVBE, OSXSAVE.
> * GOAMD64=v4: all v3 instructions, plus AVX512F, AVX512BW, AVX512CD, AVX512DQ, AVX512VL.
>
> Setting, for example, GOAMD64=v3, will allow the Go compiler to use AVX2 instructions in the generated binaries (which may improve performance in some cases); but these binaries will not run on older x86 processors that don't support AVX2.
>
> The Go toolchain may also generate newer instructions, but guarded by dynamic checks to ensure they're only executed on capable processors. For example, with GOAMD64=v1, [math/bits.OnesCount](https://pkg.go.dev/math/bits#OnesCount) will still use the [POPCNT](https://www.felixcloutier.com/x86/popcnt) instruction if [CPUID](https://www.felixcloutier.com/x86/cpuid) reports that it's available. Otherwise, it falls back to a generic implementation.
>
> The Go toolchain does not currently generate any AVX512 instructions.
>
> Note that *processor* is a simplification in this context. In practice, support from the entire system (firmware, hypervisor, kernel) is needed.
## Which release should I use for my system?
Here are some common systems that people use Clash on, and the recommended release for each of them:
- NETGEAR WNDR3700v2: mips-hardfloat [#846](https://github.com/Dreamacro/clash/issues/846)
- NETGEAR WNDR3800: mips-softfloat [#579](https://github.com/Dreamacro/clash/issues/579)
- ASUS RT-AC5300: armv5 [#2356](https://github.com/Dreamacro/clash/issues/2356)
- MediaTek MT7620A, MT7621A: mipsle-softfloat ([#136](https://github.com/Dreamacro/clash/issues/136))
- mips_24kc: [#192](https://github.com/Dreamacro/clash/issues/192)
If your device is not listed here, you can check the CPU architecture of your device with `uname -m` and find the corresponding release in the release page.
## List of wontfix
The official Clash core project will not implement/fix these things:
- [Snell](https://github.com/Dreamacro/clash/issues/2466)
- [Custom CA](https://github.com/Dreamacro/clash/issues/2333)
- [VMess Mux](https://github.com/Dreamacro/clash/issues/450)
- [VLess](https://github.com/Dreamacro/clash/issues/1185)
- [KCP](https://github.com/Dreamacro/clash/issues/16)
- [mKCP](https://github.com/Dreamacro/clash/issues/2308)
- [TLS Encrypted Client Hello](https://github.com/Dreamacro/clash/issues/2295)
- [TCP support for Clash DNS server](https://github.com/Dreamacro/clash/issues/368)
- [MITM](https://github.com/Dreamacro/clash/issues/227#issuecomment-508693628)
The following will be considered implementing when the official Go QUIC library releases.
- [TUIC](https://github.com/Dreamacro/clash/issues/2222)
- [Hysteria](https://github.com/Dreamacro/clash/issues/1863)
## Proxies work on my local machine, but not on my router or in a container
Your system might be out of sync in time. Refer to your platform documentations about time synchronisation - things will break if time is not in sync.
## Time complexity of rule matching
Refer to this discussion: [#422](https://github.com/Dreamacro/clash/issues/422)
## Clash Premium unable to access Internet
You can refer to these relevant discussions:
- [#432](https://github.com/Dreamacro/clash/issues/432#issuecomment-571634905)
- [#2480](https://github.com/Dreamacro/clash/issues/2480)
## error: unsupported rule type RULE-SET
If you stumbled on this error message:
```txt
FATA[0000] Parse config error: Rules[0] [RULE-SET,apple,REJECT] error: unsupported rule type RULE-SET
```
You're using Clash open-source edition. Rule Providers is currently only available in the [Premium core](https://github.com/Dreamacro/clash/releases/tag/premium). (it's free)
## DNS Hijack does not work
Since `tun.auto-route` does not intercept LAN traffic, if your system DNS is set to servers in private subnets, DNS hijack will not work. You can either:
1. Use a non-private DNS server as your system DNS like `1.1.1.1`
2. Or manually set up your system DNS to the Clash DNS (by default, `198.18.0.1`)

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sidebarTitle: Getting Started
sidebarOrder: 2
---
# Getting Started
To get started with Clash, you can either build it from source or download pre-built binaries.
## Using pre-built binaries
You can download Clash core binaries here: [https://github.com/Dreamacro/clash/releases](https://github.com/Dreamacro/clash/releases)
## Install from source
You can build Clash on your own device with Golang 1.19+:
```shell
$ go install github.com/Dreamacro/clash@latest
go: downloading github.com/Dreamacro/clash v1.15.1
```
The binary is built under `$GOPATH/bin`:
```shell
$ $GOPATH/bin/clash -v
Clash unknown version darwin arm64 with go1.20.3 unknown time
```
## Build for a different arch/os
Golang supports cross-compilation, so you can build for a device on a different architecture or operating system. You can use _make_ to build them easily - for example:
```shell
$ git clone --depth 1 https://github.com/Dreamacro/clash
Cloning into 'clash'...
remote: Enumerating objects: 359, done.
remote: Counting objects: 100% (359/359), done.
remote: Compressing objects: 100% (325/325), done.
remote: Total 359 (delta 25), reused 232 (delta 17), pack-reused 0
Receiving objects: 100% (359/359), 248.99 KiB | 1.63 MiB/s, done.
Resolving deltas: 100% (25/25), done.
$ cd clash && make darwin-arm64
fatal: No names found, cannot describe anything.
GOARCH=arm64 GOOS=darwin CGO_ENABLED=0 go build -trimpath -ldflags '-X "github.com/Dreamacro/clash/constant.Version=unknown version" -X "github.com/Dreamacro/clash/constant.BuildTime=Mon May 8 16:47:10 UTC 2023" -w -s -buildid=' -o bin/clash-darwin-arm64
$ file bin/clash-darwin-arm64
bin/clash-darwin-arm64: Mach-O 64-bit executable arm64
```
For other build targets, check out the [Makefile](https://github.com/Dreamacro/clash/blob/master/Makefile).

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sidebarTitle: Clash as a Service
sidebarOrder: 3
---
# Clash as a Service
While Clash is meant to be run in the background, there's currently no elegant way to implement daemons with Golang, hence we recommend you to daemonize Clash with third-party tools.
## systemd
Copy Clash binary to `/usr/local/bin` and configuration files to `/etc/clash`:
```shell
cp clash /usr/local/bin
cp config.yaml /etc/clash/
cp Country.mmdb /etc/clash/
```
Create the systemd configuration file at `/etc/systemd/system/clash.service`:
```ini
[Unit]
Description=Clash daemon, A rule-based proxy in Go.
After=network-online.target
[Service]
Type=simple
Restart=always
ExecStart=/usr/local/bin/clash -d /etc/clash
[Install]
WantedBy=multi-user.target
```
After that you're supposed to reload systemd:
```shell
systemctl daemon-reload
```
Launch clashd on system startup with:
```shell
systemctl enable clash
```
Launch clashd immediately with:
```shell
systemctl start clash
```
Check the health and logs of Clash with:
```shell
systemctl status clash
journalctl -xe
```
Credits to [ktechmidas](https://github.com/ktechmidas) for this guide. ([#754](https://github.com/Dreamacro/clash/issues/754))
## Docker
We provide pre-built images of Clash and Clash Premium. Therefore you can deploy Clash with [Docker Compose](https://docs.docker.com/compose/) if you're on Linux. However, you should be advised that it's [not recommended](https://github.com/Dreamacro/clash/issues/2249#issuecomment-1203494599) to run **Clash Premium** in a container.
::: warning
This setup will not work on macOS systems due to the lack of [host networking and TUN support](https://github.com/Dreamacro/clash/issues/770#issuecomment-650951876) in Docker for Mac.
:::
::: code-group
```yaml [Clash]
services:
clash:
image: ghcr.io/dreamacro/clash
restart: always
volumes:
- ./config.yaml:/root/.config/clash/config.yaml:ro
# - ./ui:/ui:ro # dashboard volume
ports:
- "7890:7890"
- "7891:7891"
# - "8080:8080" # The External Controller (RESTful API)
network_mode: "bridge"
```
```yaml [Clash Premium]
services:
clash:
image: ghcr.io/dreamacro/clash-premium
restart: always
volumes:
- ./config.yaml:/root/.config/clash/config.yaml:ro
# - ./ui:/ui:ro # dashboard volume
ports:
- "7890:7890"
- "7891:7891"
# - "8080:8080" # The External Controller (RESTful API)
cap_add:
- NET_ADMIN
devices:
- /dev/net/tun
network_mode: "host"
```
:::
Save as `docker-compose.yaml` and place your `config.yaml` in the same directory.
::: tip
Before proceeding, refer to your platform documentations about time synchronisation - things will break if time is not in sync.
:::
When you're ready, run the following commands to bring up Clash:
```shell
docker-compose up -d
```
You can view the logs with:
```shell
docker-compose logs
```
Stop Clash with:
```shell
docker-compose stop
```

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{
"scripts": {
"docs:dev": "vitepress dev",
"docs:build": "vitepress build",
"docs:preview": "vitepress preview"
},
"devDependencies": {
"@types/node": "^20.3.2",
"directory-tree": "^3.5.1",
"markdown-yaml-metadata-parser": "^3.0.0",
"vitepress": "1.0.0-beta.3"
}
}

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---
sidebarTitle: "Feature: eBPF Redirect to TUN"
sidebarOrder: 3
---
# eBPF Redirect to TUN
eBPF redirect to TUN is a feature that intercepts all network traffic on a specific network interface and redirects it to the TUN interface. [Support from your kernel](https://github.com/iovisor/bcc/blob/master/INSTALL.md#kernel-configuration) is required.
::: warning
This feature conflicts with `tun.auto-route`.
:::
While it usually brings better performance compared to `tun.auto-redir` and `tun.auto-route`, it's less tested compared to `auto-route`. Therefore, you should proceed with caution.
## Configuration
```yaml
ebpf:
redirect-to-tun:
- eth0
```
## Known Issues
- This feature breaks Tailscaled, so you should use `tun.auto-route` instead.

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---
sidebarTitle: Experimental Features
sidebarOrder: 9
---
# Experimental Features
Occasionally we make new features that would require a fair amount of testing before having it in the main release. These features are marked as experimental and are disabled by default.
::: warning
Some features listed here can be unstable, and might get removed in any future version - we do not recommend using them unless you have a specific reason to do so.
:::
## Sniff TLS SNI
```yaml
experimental:
sniff-tls-sni: true
```

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---
sidebarTitle: Introduction
sidebarOrder: 1
---
# Introduction
In the past, there was only one open-source version of Clash, until some [improper uses and redistributions](https://github.com/Dreamacro/clash/issues/541#issuecomment-672029110) of Clash arose. From that, we decided to fork Clash and develop the more advanced features in a private GitHub repository.
Don't worry just yet - the Premium core will stay free of charge, and the security is enforced with peer reviews from multiple credible developers.
## What's the difference?
The Premium core is a fork of the open-source Clash core with the addition of the following features:
- [TUN Device](/premium/tun-device) with the support of `auto-redir` and `auto-route`
- [eBPF Redirect to TUN](/premium/ebpf)
- [Rule Providers](/premium/rule-providers)
- [Script](/premium/script)
- [Script Shortcuts](/premium/script-shortcuts)
- [Userspace Wireguard](/premium/userspace-wireguard)
- [The Profiling Engine](/premium/the-profiling-engine)
## Obtaining a Copy
You can download the latest Clash Premium binaries from [GitHub Releases](https://github.com/Dreamacro/clash/releases/tag/premium).

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sidebarTitle: "Feature: Rule Providers"
sidebarOrder: 4
---
# Rule Providers
Rule Providers are pretty much the same compared to Proxy Providers. It enables users to load rules from external sources and overall cleaner configuration. This feature is currently Premium core only.
To define a Rule Provider, add the `rule-providers` field to the main configuration:
```yaml
rule-providers:
apple:
behavior: "domain" # domain, ipcidr or classical (premium core only)
type: http
url: "url"
# format: 'yaml' # or 'text'
interval: 3600
path: ./apple.yaml
microsoft:
behavior: "domain"
type: file
path: /microsoft.yaml
rules:
- RULE-SET,apple,REJECT
- RULE-SET,microsoft,policy
```
There are three behavior types available:
## `domain`
yaml:
```yaml
payload:
- '.blogger.com'
- '*.*.microsoft.com'
- 'books.itunes.apple.com'
```
text:
```txt
# comment
.blogger.com
*.*.microsoft.com
books.itunes.apple.com
```
## `ipcidr`
yaml
```yaml
payload:
- '192.168.1.0/24'
- '10.0.0.0.1/32'
```
text:
```txt
# comment
192.168.1.0/24
10.0.0.0.1/32
```
## `classical`
yaml:
```yaml
payload:
- DOMAIN-SUFFIX,google.com
- DOMAIN-KEYWORD,google
- DOMAIN,ad.com
- SRC-IP-CIDR,192.168.1.201/32
- IP-CIDR,127.0.0.0/8
- GEOIP,CN
- DST-PORT,80
- SRC-PORT,7777
# MATCH is not necessary here
```
text:
```txt
# comment
DOMAIN-SUFFIX,google.com
DOMAIN-KEYWORD,google
DOMAIN,ad.com
SRC-IP-CIDR,192.168.1.201/32
IP-CIDR,127.0.0.0/8
GEOIP,CN
DST-PORT,80
SRC-PORT,7777
```

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---
sidebarTitle: "Feature: Script Shortcuts"
sidebarOrder: 6
---
# Script Shortcuts
Clash Premium implements the Scripting feature powered by Python3, enableing users to programmatically select policies for the packets with dynamic flexibility.
You can either controll the entire rule-matching engine with a single Python script, or define a number of shortcuts and use them in companion with the regular rules. This page refers to the latter feature. For the former, see [Script](./script.md).
This feature enables the use of script in `rules` mode. By default, DNS resolution takes place for SCRIPT rules. `no-resolve` can be appended to the rule to prevent the resolution. (i.e.: `SCRIPT,quic,DIRECT,no-resolve`)
```yaml
mode: Rule
script:
engine: expr # or starlark (10x to 20x slower)
shortcuts:
quic: network == 'udp' and dst_port == 443
curl: resolve_process_name() == 'curl'
# curl: resolve_process_path() == '/usr/bin/curl'
rules:
- SCRIPT,quic,REJECT
```
## Evaluation Engines
[Expr](https://expr.medv.io/) is used as the default engine for Script Shortcuts, offering 10x to 20x performance boost compared to Starlark.
[Starlark](https://github.com/google/starlark-go) is a Python-like langauge for configuration purposes, you can also use it for Script Shortcuts.
## Variables
- network: string
- type: string
- src_ip: string
- dst_ip: string
- src_port: uint16
- dst_port: uint16
- host: string
- process_path: string
::: warning
Starlark is missing `process_path` variable for now.
:::
## Functions
```ts
type resolve_ip = (host: string) => string // ip string
type in_cidr = (ip: string, cidr: string) => boolean // ip in cidr
type in_ipset = (name: string, ip: string) => boolean // ip in ipset
type geoip = (ip: string) => string // country code
type match_provider = (name: string) => boolean // in rule provider
type resolve_process_name = () => string // find process name (curl .e.g)
type resolve_process_path = () => string // find process path (/usr/bin/curl .e.g)
```

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---
sidebarTitle: "Feature: Script"
sidebarOrder: 5
---
# Script
Clash Premium implements the Scripting feature powered by Python3, enableing users to programmatically select policies for the packets with dynamic flexibility.
You can either controll the entire rule-matching engine with a single Python script, or define a number of shortcuts and use them in companion with the regular rules. This page refers to the first feature, for the latter, see [Script Shortcuts](./script-shortcuts.md).
## Scripting the entire rule-matching engine
```yaml
mode: Script
# https://lancellc.gitbook.io/clash/clash-config-file/script
script:
code: |
def main(ctx, metadata):
ip = metadata["dst_ip"] = ctx.resolve_ip(metadata["host"])
if ip == "":
return "DIRECT"
code = ctx.geoip(ip)
if code == "LAN" or code == "CN":
return "DIRECT"
return "Proxy" # default policy for requests which are not matched by any other script
```
If you want to use ip rules (i.e.: IP-CIDR, GEOIP, etc), you will first need to manually resolve IP addresses and assign them to metadata:
```python
def main(ctx, metadata):
# ctx.rule_providers["geoip"].match(metadata) return false
ip = ctx.resolve_ip(metadata["host"])
if ip == "":
return "DIRECT"
metadata["dst_ip"] = ip
# ctx.rule_providers["iprule"].match(metadata) return true
return "Proxy"
```
Interface definition for Metadata and Context:
```ts
interface Metadata {
type: string // socks5、http
network: string // tcp
host: string
src_ip: string
src_port: string
dst_ip: string
dst_port: string
}
interface Context {
resolve_ip: (host: string) => string // ip string
resolve_process_name: (metadata: Metadata) => string
resolve_process_path: (metadata: Metadata) => string
geoip: (ip: string) => string // country code
log: (log: string) => void
proxy_providers: Record<string, Array<{ name: string, alive: boolean, delay: number }>>
rule_providers: Record<string, { match: (metadata: Metadata) => boolean }>
}
```

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---
sidebarTitle: "Feature: The Profiling Engine"
sidebarOrder: 8
---
# The Profiling Engine
https://github.com/Dreamacro/clash-tracing
```yaml
profile:
tracing: true
```

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---
sidebarTitle: "Feature: TUN Device"
sidebarOrder: 2
---
# TUN Device
The Premium core has out-of-the-box support of TUN device. Being a Network layer device, it can be used to handle TCP, UDP, ICMP traffic. It has been extensively tested and used in production environments - you can even play competitive games with it.
One of the biggest advantage of using Clash TUN is the built-in support of the *automagic* management of the route table, routing rules and nftable. You can enable it with the options `tun.auto-route` and `tun.auto-redir`. It's a drop-in replacement of the ancient configuration option `redir-port` (TCP) for the sake of easier configuration and better stability.
::: tip
`tun.auto-route` and `tun.auto-redir` are only available on macOS, Windows, Linux and Android, and only receives IPv4 traffic.
:::
There are two options of TCP/IP stack available: `system` or `gvisor`. In order to get the best performance available, we recommend that you always use `system` stack unless you have a specific reason or compatibility issue to use `gvisor`. If that's the case, do not hesitate to [submit an issue](https://github.com/Dreamacro/clash/issues/new/choose).
## Technical Limitations
* For Android, the control device is at `/dev/tun` instead of `/dev/net/tun`, you will need to create a symbolic link first (i.e. `ln -sf /dev/tun /dev/net/tun`)
* DNS hijacking might result in a failure, if the system DNS is at a private IP address (since `auto-route` does not capture private network traffic).
## Linux, macOS or Android
This is an example configuration of the TUN feature:
```yaml
interface-name: en0 # conflict with `tun.auto-detect-interface`
tun:
enable: true
stack: system # or gvisor
# dns-hijack:
# - 8.8.8.8:53
# - tcp://8.8.8.8:53
# - any:53
# - tcp://any:53
auto-route: true # manage `ip route` and `ip rules`
auto-redir: true # manage nftable REDIRECT
auto-detect-interface: true # conflict with `interface-name`
```
Be advised, since the use of TUN device and manipulation of system route/nft settings, Clash will need superuser privileges to run.
```shell
sudo ./clash
```
If your device already has some TUN device, Clash TUN might not work - you will have to check the route table and routing rules manually. In this case, `fake-ip-filter` may helpful as well.
## Windows
You will need to visit the [WinTUN website](https://www.wintun.net) and download the latest release. After that, copy `wintun.dll` into Clash home directory. Example configuration:
```yaml
tun:
enable: true
stack: gvisor # or system
dns-hijack:
- 198.18.0.2:53 # when `fake-ip-range` is 198.18.0.1/16, should hijack 198.18.0.2:53
auto-route: true # auto set global route for Windows
# It is recommended to use `interface-name`
auto-detect-interface: true # auto detect interface, conflict with `interface-name`
```

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---
sidebarTitle: "Feature: Userspace Wireguard"
sidebarOrder: 7
---
# Userspace Wireguard
Due to the dependency on gvisor TCP/IP stack, Wireguard outbound is currently only available in the Premium core.
```yaml
proxies:
- name: "wg"
type: wireguard
server: 127.0.0.1
port: 443
ip: 172.16.0.2
# ipv6: your_ipv6
private-key: eCtXsJZ27+4PbhDkHnB923tkUn2Gj59wZw5wFA75MnU=
public-key: Cr8hWlKvtDt7nrvf+f0brNQQzabAqrjfBvas9pmowjo=
# preshared-key: base64
# remote-dns-resolve: true # remote resolve DNS with `dns` field, default is true
# dns: [1.1.1.1, 8.8.8.8]
# mtu: 1420
udp: true
```

1
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../logo.png

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---
sidebarTitle: The External Controller
sidebarOrder: 1
---
# The External Controller
## Introduction
External Controller enables users to control Clash programmatically with the HTTP RESTful API. The third-party Clash GUIs are heavily based on this feature. Enable this feature by specifying an address in `external-controller`.
## Authentication
- External Controllers Accept `Bearer Tokens` as access authentication method.
- Use `Authorization: Bearer <Your Secret>` as your request header in order to pass credentials.
## RESTful API Documentation
### Logs
- `/logs`
- Method: `GET`
- Full Path: `GET /logs`
- Description: Get real-time logs
### Traffic
- `/traffic`
- Method: `GET`
- Full Path: `GET /traffic`
- Description: Get real-time traffic data
### Version
- `/version`
- Method: `GET`
- Full Path: `GET /version`
- Description: Get clash version
### Configs
- `/configs`
- Method: `GET`
- Full Path: `GET /configs`
- Description: Get base configs
- Method: `PUT`
- Full Path: `PUT /configs`
- Description: Reloading base configs
- Method: `PATCH`
- Full Path: `PATCH /configs`
- Description: Update base configs
### Proxies
- `/proxies`
- Method: `GET`
- Full Path: `GET /proxies`
- Description: Get proxies information
- `/proxies/:name`
- Method: `GET`
- Full Path: `GET /proxies/:name`
- Description: Get specific proxy information
- Method: `PUT`
- Full Path: `PUT /proxies/:name`
- Description: Select specific proxy
- `/proxies/:name/delay`
- Method: `GET`
- Full Path: `GET /proxies/:name/delay`
- Description: Get specific proxy delay test information
### Rules
- `/rules`
- Method: `GET`
- Full Path: `GET /rules`
- Description: Get rules information
### Connections
- `/connections`
- Method: `GET`
- Full Path: `GET /connections`
- Description: Get connections information
- Method: `DELETE`
- Full Path: `DELETE /connections`
- Description: Close all connections
- `/connections/:id`
- Method: `DELETE`
- Full Path: `DELETE /connections/:id`
- Description: Close specific connection
### Providers
- `/providers/proxies`
- Method: `GET`
- Full Path: `GET /providers/proxies`
- Description: Get all proxies information for all proxy-providers
- `/providers/proxies/:name`
- Method: `GET`
- Full Path: `GET /providers/proxies/:name`
- Description: Get proxies information for specific proxy-provider
- Method: `PUT`
- Full Path: `PUT /providers/proxies/:name`
- Description: Select specific proxy-provider
- `/providers/proxies/:name/healthcheck`
- Method: `GET`
- Full Path: `GET /providers/proxies/:name/healthcheck`
- Description: Get proxies information for specific proxy-provider
### DNS Query
- `/dns/query`
- Method: `GET`
- Full Path: `GET /dns/query?name={name}[&type={type}]`
- Description: Get DNS query data for a specified name and type.
- Parameters:
- `name` (required): The domain name to query.
- `type` (optional): The DNS record type to query (e.g., A, MX, CNAME, etc.). Defaults to `A` if not provided.
- Example: `GET /dns/query?name=example.com&type=A`

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---
sidebarTitle: 在 Golang 程序中集成 Clash
sidebarOrder: 3
---
# 在 Golang 程序中集成 Clash
如果 Clash 不能满足您的需求, 您可以在自己的 Golang 代码中使用 Clash.
目前已经有基本的支持:
```go
package main
import (
"context"
"fmt"
"io"
"net"
"github.com/Dreamacro/clash/adapter/outbound"
"github.com/Dreamacro/clash/constant"
"github.com/Dreamacro/clash/listener/socks"
)
func main() {
in := make(chan constant.ConnContext, 100)
defer close(in)
l, err := socks.New("127.0.0.1:10000", in)
if err != nil {
panic(err)
}
defer l.Close()
println("listen at:", l.Address())
direct := outbound.NewDirect()
for c := range in {
conn := c
metadata := conn.Metadata()
fmt.Printf("请求从 %s 传入到 %s\n", metadata.SourceAddress(), metadata.RemoteAddress())
go func () {
remote, err := direct.DialContext(context.Background(), metadata)
if err != nil {
fmt.Printf("Dial 错误: %s\n", err.Error())
return
}
relay(remote, conn.Conn())
}()
}
}
func relay(l, r net.Conn) {
go io.Copy(l, r)
io.Copy(r, l)
}
```

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---
sidebarTitle: 基于规则的 OpenConnect
sidebarOrder: 2
---
# 基于规则的 OpenConnect
支持以下 OpenConnect:
- Cisco AnyConnect SSL VPN
- Juniper Network Connect
- Palo Alto Networks (PAN) GlobalProtect SSL VPN
- Pulse Connect Secure SSL VPN
- F5 BIG-IP SSL VPN
- FortiGate SSL VPN
- Array Networks SSL VPN
例如, 您的公司使用 Cisco AnyConnect 作为内部网络访问的方式. 这里我将向您展示如何使用 Clash 提供的策略路由来使用 OpenConnect.
首先, [安装 vpn-slice](https://github.com/dlenski/vpn-slice#requirements). 这个工具会覆写 OpenConnect 的默认路由表行为. 简单来说, 它会阻止 VPN 覆写您的默认路由.
接下来您需要一个脚本 (比如 `tun0.sh`) 类似于这样:
```sh
#!/bin/bash
ANYCONNECT_HOST="vpn.example.com"
ANYCONNECT_USER="john"
ANYCONNECT_PASSWORD="foobar"
ROUTING_TABLE_ID="6667"
TUN_INTERFACE="tun0"
# 如果服务器在中国大陆, 请添加 --no-dtls. 中国大陆的 UDP 会很卡.
echo "$ANYCONNECT_PASSWORD" | \
openconnect \
--non-inter \
--passwd-on-stdin \
--protocol=anyconnect \
--interface $TUN_INTERFACE \
--script "vpn-slice
if [ \"\$reason\" = 'connect' ]; then
ip rule add from \$INTERNAL_IP4_ADDRESS table $ROUTING_TABLE_ID
ip route add default dev \$TUNDEV scope link table $ROUTING_TABLE_ID
elif [ \"\$reason\" = 'disconnect' ]; then
ip rule del from \$INTERNAL_IP4_ADDRESS table $ROUTING_TABLE_ID
ip route del default dev \$TUNDEV scope link table $ROUTING_TABLE_ID
fi" \
--user $ANYCONNECT_USER \
https://$ANYCONNECT_HOST
```
之后, 我们将其配置成一个 systemd 服务. 创建 `/etc/systemd/system/tun0.service`:
```ini
[Unit]
Description=Cisco AnyConnect VPN
After=network-online.target
Conflicts=shutdown.target sleep.target
[Service]
Type=simple
ExecStart=/path/to/tun0.sh
KillSignal=SIGINT
Restart=always
RestartSec=3
StartLimitIntervalSec=0
[Install]
WantedBy=multi-user.target
```
然后我们启用并启动服务.
```shell
chmod +x /path/to/tun0.sh
systemctl daemon-reload
systemctl enable tun0
systemctl start tun0
```
这里您可以查看日志来查看它是否正常运行. 简单的方法是查看 `tun0` 接口是否已经创建.
和 Wireguard 类似, 将 TUN 设备作为出站很简单, 只需要添加一个策略组:
```yaml
proxy-groups:
- name: Cisco AnyConnect VPN
type: select
interface-name: tun0
proxies:
- DIRECT
```
... 然后就可以使用了!
添加您想要的规则:
```yaml
rules:
- DOMAIN-SUFFIX,internal.company.com,Cisco AnyConnect VPN
```
当您发现有问题时, 您应该查看 debug 级别的日志.

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---
sidebarTitle: 基于规则的 Wireguard
sidebarOrder: 1
---
# 基于规则的 Wireguard
假设您的内核支持 Wireguard 并且您已经启用了它. `Table` 选项可以阻止 _wg-quick_ 覆写默认路由.
例如 `wg0.conf`:
```ini
[Interface]
PrivateKey = ...
Address = 172.16.0.1/32
MTU = ...
Table = off
PostUp = ip rule add from 172.16.0.1/32 table 6666
[Peer]
AllowedIPs = 0.0.0.0/0
AllowedIPs = ::/0
PublicKey = ...
Endpoint = ...
```
然后在 Clash 中您只需要有一个 DIRECT 策略组, 它包含一个指定的出站接口:
```yaml
proxy-groups:
- name: Wireguard
type: select
interface-name: wg0
proxies:
- DIRECT
rules:
- DOMAIN,google.com,Wireguard
```
这通常比 Clash 自己实现的用户空间 Wireguard 客户端性能更好. Wireguard 在内核中支持.

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---
sidebarTitle: 参考配置
sidebarOrder: 7
---
# 参考配置
```yaml
# HTTP(S) 代理服务端口
port: 7890
# SOCKS5 代理服务端口
socks-port: 7891
# Linux 和 macOS 的透明代理服务端口 (TCP 和 TProxy UDP 重定向)
# redir-port: 7892
# Linux 的透明代理服务端口 (TProxy TCP 和 TProxy UDP)
# tproxy-port: 7893
# HTTP(S) 和 SOCKS4(A)/SOCKS5 代理服务共用一个端口
# mixed-port: 7890
# 本地 SOCKS5/HTTP(S) 代理服务的认证
# authentication:
# - "user1:pass1"
# - "user2:pass2"
# 设置为 true 以允许来自其他 LAN IP 地址的连接
# allow-lan: false
# 仅当 `allow-lan``true` 时有效
# '*': 绑定所有 IP 地址
# 192.168.122.11: 绑定单个 IPv4 地址
# "[aaaa::a8aa:ff:fe09:57d8]": 绑定单个 IPv6 地址
# bind-address: '*'
# Clash 路由工作模式
# rule: 基于规则的数据包路由
# global: 所有数据包将被转发到单个节点
# direct: 直接将数据包转发到互联网
mode: rule
# 默认情况下, Clash 将日志打印到 STDOUT
# 日志级别: info / warning / error / debug / silent
# log-level: info
# 当设置为 false 时, 解析器不会将主机名解析为 IPv6 地址
# ipv6: false
# RESTful Web API 监听地址
external-controller: 127.0.0.1:9090
# 配置目录的相对路径或静态 Web 资源目录的绝对路径. Clash core 将在
# `http://{{external-controller}}/ui` 中提供服务.
# external-ui: folder
# RESTful API 密钥 (可选)
# 通过指定 HTTP 头 `Authorization: Bearer ${secret}` 进行身份验证
# 如果RESTful API在 0.0.0.0 上监听, 务必设置一个 secret 密钥.
# secret: ""
# 出站接口名称
# interface-name: en0
# fwmark (仅在 Linux 上有效)
# routing-mark: 6666
# 用于DNS服务器和连接建立的静态主机 (如/etc/hosts) .
#
# 支持通配符主机名 (例如 *.clash.dev, *.foo.*.example.com)
# 非通配符域名优先级高于通配符域名
# 例如 foo.example.com > *.example.com > .example.com
# P.S. +.foo.com 等于 .foo.com 和 foo.com
# hosts:
# '*.clash.dev': 127.0.0.1
# '.dev': 127.0.0.1
# 'alpha.clash.dev': '::1'
# profile:
# 将 `select` 手动选择 结果存储在 $HOME/.config/clash/.cache 中
# 如果不需要此行为, 请设置为 false
# 当两个不同的配置具有同名的组时, 将共享所选值
# store-selected: true
# 持久化 fakeip
# store-fake-ip: false
# DNS 服务设置
# 此部分是可选的. 当不存在时, DNS 服务将被禁用.
dns:
enable: false
listen: 0.0.0.0:53
# ipv6: false # 当为 false 时, AAAA 查询的响应将为空
# 这些 名称服务器(nameservers) 用于解析下列 DNS 名称服务器主机名.
# 仅指定 IP 地址
default-nameserver:
- 114.114.114.114
- 8.8.8.8
# enhanced-mode: fake-ip
fake-ip-range: 198.18.0.1/16 # Fake IP 地址池 CIDR
# use-hosts: true # 查找 hosts 并返回 IP 记录
# search-domains: [local] # A/AAAA 记录的搜索域
# 此列表中的主机名将不会使用 Fake IP 解析
# 即, 对这些域名的请求将始终使用其真实 IP 地址进行响应
# fake-ip-filter:
# - '*.lan'
# - localhost.ptlogin2.qq.com
# 支持 UDP、TCP、DoT、DoH. 您可以指定要连接的端口.
# 所有 DNS 查询都直接发送到名称服务器, 无需代理
# Clash 使用第一个收到的响应作为 DNS 查询的结果.
nameserver:
- 114.114.114.114 # 默认值
- 8.8.8.8 # 默认值
- tls://dns.rubyfish.cn:853 # DNS over TLS
- https://1.1.1.1/dns-query # DNS over HTTPS
- dhcp://en0 # 来自 dhcp 的 dns
# - '8.8.8.8#en0'
# 当 `fallback` 存在时, DNS 服务器将向此部分中的服务器
# 与 `nameservers` 中的服务器发送并发请求
# 当 GEOIP 国家不是 `CN` 时, 将使用 fallback 服务器的响应
# fallback:
# - tcp://1.1.1.1
# - 'tcp://1.1.1.1#en0'
# 如果使用 `nameservers` 解析的 IP 地址在下面指定的子网中,
# 则认为它们无效, 并使用 `fallback` 服务器的结果.
#
# 当 `fallback-filter.geoip` 为 true 且 IP 地址的 GEOIP 为 `CN` 时,
# 将使用 `nameservers` 服务器解析的 IP 地址.
#
# 如果 `fallback-filter.geoip` 为 false, 且不匹配 `fallback-filter.ipcidr`,
# 则始终使用 `nameservers` 服务器的结果
#
# 这是对抗 DNS 污染攻击的一种措施.
# fallback-filter:
# geoip: true
# geoip-code: CN
# ipcidr:
# - 240.0.0.0/4
# domain:
# - '+.google.com'
# - '+.facebook.com'
# - '+.youtube.com'
# 通过特定的名称服务器查找域名
# nameserver-policy:
# 'www.baidu.com': '114.114.114.114'
# '+.internal.crop.com': '10.0.0.1'
proxies:
# Shadowsocks
# 支持的加密方法:
# aes-128-gcm aes-192-gcm aes-256-gcm
# aes-128-cfb aes-192-cfb aes-256-cfb
# aes-128-ctr aes-192-ctr aes-256-ctr
# rc4-md5 chacha20-ietf xchacha20
# chacha20-ietf-poly1305 xchacha20-ietf-poly1305
- name: "ss1"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
# udp: true
- name: "ss2"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: obfs
plugin-opts:
mode: tls # or http
# host: bing.com
- name: "ss3"
type: ss
server: server
port: 443
cipher: chacha20-ietf-poly1305
password: "password"
plugin: v2ray-plugin
plugin-opts:
mode: websocket # 暂不支持 QUIC
# tls: true # wss
# skip-cert-verify: true
# host: bing.com
# path: "/"
# mux: true
# headers:
# custom: value
# vmess
# 支持的加密方法:
# auto/aes-128-gcm/chacha20-poly1305/none
- name: "vmess"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# tls: true
# skip-cert-verify: true
# servername: example.com # 优先于 wss 主机
# network: ws
# ws-opts:
# path: /path
# headers:
# Host: v2ray.com
# max-early-data: 2048
# early-data-header-name: Sec-WebSocket-Protocol
- name: "vmess-h2"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
network: h2
tls: true
h2-opts:
host:
- http.example.com
- http-alt.example.com
path: /
- name: "vmess-http"
type: vmess
server: server
port: 443
uuid: uuid
alterId: 32
cipher: auto
# udp: true
# network: http
# http-opts:
# # method: "GET"
# # path:
# # - '/'
# # - '/video'
# # headers:
# # Connection:
# # - keep-alive
- name: vmess-grpc
server: server
port: 443
type: vmess
uuid: uuid
alterId: 32
cipher: auto
network: grpc
tls: true
servername: example.com
# skip-cert-verify: true
grpc-opts:
grpc-service-name: "example"
# socks5
- name: "socks"
type: socks5
server: server
port: 443
# username: username
# password: password
# tls: true
# skip-cert-verify: true
# udp: true
# http
- name: "http"
type: http
server: server
port: 443
# username: username
# password: password
# tls: true # https
# skip-cert-verify: true
# sni: custom.com
# Snell
# 请注意, 目前还没有UDP支持.
- name: "snell"
type: snell
server: server
port: 44046
psk: yourpsk
# version: 2
# obfs-opts:
# mode: http # or tls
# host: bing.com
# Trojan
- name: "trojan"
type: trojan
server: server
port: 443
password: yourpsk
# udp: true
# sni: example.com # aka 服务器名称
# alpn:
# - h2
# - http/1.1
# skip-cert-verify: true
- name: trojan-grpc
server: server
port: 443
type: trojan
password: "example"
network: grpc
sni: example.com
# skip-cert-verify: true
udp: true
grpc-opts:
grpc-service-name: "example"
- name: trojan-ws
server: server
port: 443
type: trojan
password: "example"
network: ws
sni: example.com
# skip-cert-verify: true
udp: true
# ws-opts:
# path: /path
# headers:
# Host: example.com
# ShadowsocksR
# 支持的加密方法: ss 中的所有流加密方法
# 支持的混淆方式:
# plain http_simple http_post
# random_head tls1.2_ticket_auth tls1.2_ticket_fastauth
# 支持的协议:
# origin auth_sha1_v4 auth_aes128_md5
# auth_aes128_sha1 auth_chain_a auth_chain_b
- name: "ssr"
type: ssr
server: server
port: 443
cipher: chacha20-ietf
password: "password"
obfs: tls1.2_ticket_auth
protocol: auth_sha1_v4
# obfs-param: domain.tld
# protocol-param: "#"
# udp: true
proxy-groups:
# 中继链路代理节点. 节点不应包含中继. 不支持 UDP.
# 流量节点链路: clash <-> http <-> vmess <-> ss1 <-> ss2 <-> Internet
- name: "relay"
type: relay
proxies:
- http
- vmess
- ss1
- ss2
# url-test 通过对 指定URL 进行基准速度测试来选择将使用哪个代理.
- name: "auto"
type: url-test
proxies:
- ss1
- ss2
- vmess1
# tolerance: 150
# lazy: true
url: 'http://www.gstatic.com/generate_204'
interval: 300
# fallback-auto 基于优先级选择可用策略. 可用性通过访问 指定URL 来测试, 就像自动 url-test 组一样.
- name: "fallback-auto"
type: fallback
proxies:
- ss1
- ss2
- vmess1
url: 'http://www.gstatic.com/generate_204'
interval: 300
# 负载均衡: 同一 eTLD+1 的请求将拨号到同一代理.
- name: "load-balance"
type: load-balance
proxies:
- ss1
- ss2
- vmess1
url: 'http://www.gstatic.com/generate_204'
interval: 300
# strategy: consistent-hashing # or round-robin
# select 手动选择, 用于选择代理或策略组
# 您可以使用 RESTful API 来切换代理, 建议在GUI中切换.
- name: Proxy
type: select
# disable-udp: true
# filter: 'someregex'
proxies:
- ss1
- ss2
- vmess1
- auto
# 直接连接到另一个接口名称或 fwmark, 也支持代理
- name: en1
type: select
interface-name: en1
routing-mark: 6667
proxies:
- DIRECT
- name: UseProvider
type: select
use:
- provider1
proxies:
- Proxy
- DIRECT
proxy-providers:
provider1:
type: http
url: "url"
interval: 3600
path: ./provider1.yaml
health-check:
enable: true
interval: 600
# lazy: true
url: http://www.gstatic.com/generate_204
test:
type: file
path: /test.yaml
health-check:
enable: true
interval: 36000
url: http://www.gstatic.com/generate_204
tunnels:
# 单行配置
- tcp/udp,127.0.0.1:6553,114.114.114.114:53,proxy
- tcp,127.0.0.1:6666,rds.mysql.com:3306,vpn
# 全 yaml 配置
- network: [tcp, udp]
address: 127.0.0.1:7777
target: target.com
proxy: proxy
rules:
- DOMAIN-SUFFIX,google.com,auto
- DOMAIN-KEYWORD,google,auto
- DOMAIN,google.com,auto
- DOMAIN-SUFFIX,ad.com,REJECT
- SRC-IP-CIDR,192.168.1.201/32,DIRECT
# 用于 IP 规则 (GEOIP, IP-CIDR, IP-CIDR6) 的可选参数 "no-resolve"
- IP-CIDR,127.0.0.0/8,DIRECT
- GEOIP,CN,DIRECT
- DST-PORT,80,DIRECT
- SRC-PORT,7777,DIRECT
- RULE-SET,apple,REJECT # 仅 Premium 版本支持
- MATCH,auto
```

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---
sidebarTitle: Clash DNS
sidebarOrder: 6
---
# Clash DNS
由于 Clash 的某些部分运行在第 3 层 (网络层) , 因此其数据包的域名是无法获取的, 也就无法进行基于规则的路由.
*Enter fake-ip*: 它支持基于规则的路由, 最大程度地减少了 DNS 污染攻击的影响, 并且提高了网络性能, 有时甚至是显著的.
## fake-ip
"fake IP" 的概念源自 [RFC 3089](https://tools.ietf.org/rfc/rfc3089):
> 一个 "fake IP" 地址被用于查询相应的 "FQDN" 信息的关键字.
fake-ip 池的默认 CIDR 是 `198.18.0.1/16` (一个保留的 IPv4 地址空间, 可以在 `dns.fake-ip-range` 中进行更改).
当 DNS 请求被发送到 Clash DNS 时, Clash 内核会通过管理内部的域名和其 fake-ip 地址的映射, 从池中分配一个 *空闲* 的 fake-ip 地址.
以使用浏览器访问 `http://google.com` 为例.
1. 浏览器向 Clash DNS 请求 `google.com` 的 IP 地址
2. Clash 检查内部映射并返回 `198.18.1.5`
3. 浏览器向 `198.18.1.5``80/tcp` 端口发送 HTTP 请求
4. 当收到 `198.18.1.5` 的入站数据包时, Clash 查询内部映射, 发现客户端实际上是在向 `google.com` 发送数据包
5. 根据规则的不同:
1. Clash 可能仅将域名发送到 SOCKS5 或 shadowsocks 等出站代理, 并与代理服务器建立连接
2. 或者 Clash 可能会基于 `SCRIPT``GEOIP``IP-CIDR` 规则或者使用 DIRECT 直连出口查询 `google.com` 的真实 IP 地址
由于这是一个令人困惑的概念, 我将以使用 cURL 程序访问 `http://google.com` 为例:
```txt{2,3,5,6,8,9}
$ curl -v http://google.com
<---- cURL 向您的系统 DNS (Clash) 询问 google.com IP 地址
----> Clash 决定使用 198.18.1.70 作为 google.com 的 IP 地址, 并记住它
* Trying 198.18.1.70:80...
<---- cURL 连接到 198.18.1.70 tcp/80
----> Clash 将立即接受连接, 并且..
* Connected to google.com (198.18.1.70) port 80 (#0)
----> Clash 在其内存中查找到 198.18.1.70 对应于 google.com
----> Clash 查询对应的规则, 并通过匹配的出口发送数据包
> GET / HTTP/1.1
> Host: google.com
> User-Agent: curl/8.0.1
> Accept: */*
>
< HTTP/1.1 301 Moved Permanently
< Location: http://www.google.com/
< Content-Type: text/html; charset=UTF-8
< Content-Security-Policy-Report-Only: object-src 'none';base-uri 'self';script-src 'nonce-ahELFt78xOoxhySY2lQ34A' 'strict-dynamic' 'report-sample' 'unsafe-eval' 'unsafe-inline' https: http:;report-uri https://csp.withgoogle.com/csp/gws/other-hp
< Date: Thu, 11 May 2023 06:52:19 GMT
< Expires: Sat, 10 Jun 2023 06:52:19 GMT
< Cache-Control: public, max-age=2592000
< Server: gws
< Content-Length: 219
< X-XSS-Protection: 0
< X-Frame-Options: SAMEORIGIN
<
<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">
<TITLE>301 Moved</TITLE></HEAD><BODY>
<H1>301 Moved</H1>
The document has moved
<A HREF="http://www.google.com/">here</A>.
</BODY></HTML>
* Connection #0 to host google.com left intact
```
<!-- TODO: nameserver, fallback, fallback-filter, hosts, search-domains, fake-ip-filter, nameserver-policy -->

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---
sidebarTitle: 快速入手
sidebarOrder: 2
---
# 快速入手
建议您在继续阅读本节之前, 先阅读[介绍](/zh_CN/configuration/introduction). 在您对Clash的工作原理有了简单的了解后, 您可以开始编写您自己的配置.
## 配置文件
主配置文件名为 `config.yaml`. 默认情况下, Clash会在 `$HOME/.config/clash` 目录读取配置文件. 如果该目录不存在, Clash会在该位置生成一个最小的配置文件.
如果您想将配置文件放在其他地方 (例如 `/etc/clash`) , 您可以使用命令行选项 `-d` 来指定配置目录:
```shell
clash -d . # current directory
clash -d /etc/clash
```
或者, 您可以使用选项 `-f` 来指定配置文件:
```shell
clash -f ./config.yaml
clash -f /etc/clash/config.yaml
```
## 特殊语法
Clash 配置文件中有一些特殊的语法, 您可能需要了解:
### IPv6 地址
您应该使用方括号 (`[]`) 来包裹 IPv6 地址, 例如:
```txt
[aaaa::a8aa:ff:fe09:57d8]
```
### DNS 通配符域名匹配
在某些情况下, 您需要匹配通配符域名. 例如, 当您设置 [Clash DNS](/zh_CN/configuration/dns) 时, 您可能想要匹配 `localdomain` 的所有子域名.
Clash 在 DNS 配置中提供了匹配不同级别通配符域名的支持, 其语法如下:
::: tip
任何包含这些字符的域名都应该用单引号 (`'`) 包裹. 例如, `'*.google.com'`.
静态域名的优先级高于通配符域名 (foo.example.com > *.example.com > .example.com) .
:::
使用星号 (`*`) 来匹配单级通配符子域名.
| 表达式 | 匹配 | 不匹配 |
| ---------- | ------- | -------------- |
| `*.google.com` | `www.google.com` | `google.com` |
| `*.bar.google.com` | `foo.bar.google.com` | `bar.google.com` |
| `*.*.google.com` | `thoughtful.sandbox.google.com` | `one.two.three.google.com` |
使用点号 (`.`) 来匹配多级通配符子域名.
| 表达式 | 匹配 | 不匹配 |
| ---------- | ------- | -------------- |
| `.google.com` | `www.google.com` | `google.com` |
| `.google.com` | `thoughtful.sandbox.google.com` | `google.com` |
| `.google.com` | `one.two.three.google.com` | `google.com` |
使用加号 (`+`) 来匹配多级通配符子域名.
`+` 通配符的工作方式类似于 `DOMAIN-SUFFIX`, 您可以一次进行多级的快速匹配.
| 表达式 | 匹配 |
| ---------- | ------- |
| `+.google.com` | `google.com` |
| `+.google.com` | `www.google.com` |
| `+.google.com` | `thoughtful.sandbox.google.com` |
| `+.google.com` | `one.two.three.google.com` |

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