266 lines
8.1 KiB
Markdown
266 lines
8.1 KiB
Markdown
<h1 align="center">
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<img src="https://github.com/Dreamacro/clash/raw/master/docs/logo.png" alt="Clash" width="200">
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<br>Clash<br>
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</h1>
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<h4 align="center">A rule-based tunnel in Go.</h4>
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<p align="center">
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<a href="https://github.com/Dreamacro/clash/actions">
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<img src="https://img.shields.io/github/workflow/status/Dreamacro/clash/Go?style=flat-square" alt="Github Actions">
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</a>
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<a href="https://goreportcard.com/report/github.com/Dreamacro/clash">
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<img src="https://goreportcard.com/badge/github.com/Dreamacro/clash?style=flat-square">
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</a>
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<img src="https://img.shields.io/github/go-mod/go-version/Dreamacro/clash?style=flat-square">
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<a href="https://github.com/Dreamacro/clash/releases">
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<img src="https://img.shields.io/github/release/Dreamacro/clash/all.svg?style=flat-square">
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</a>
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<a href="https://github.com/Dreamacro/clash/releases/tag/premium">
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<img src="https://img.shields.io/badge/release-Premium-00b4f0?style=flat-square">
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</a>
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</p>
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## Features
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- Local HTTP/HTTPS/SOCKS server with authentication support
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- VMess, Shadowsocks, Trojan, Snell protocol support for remote connections
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- Built-in DNS server that aims to minimize DNS pollution attack impact, supports DoH/DoT upstream and fake IP.
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- Rules based off domains, GEOIP, IPCIDR or Process to forward packets to different nodes
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- Remote groups allow users to implement powerful rules. Supports automatic fallback, load balancing or auto select node based off latency
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- Remote providers, allowing users to get node lists remotely instead of hardcoding in config
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- Netfilter TCP redirecting. Deploy Clash on your Internet gateway with `iptables`.
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- Comprehensive HTTP RESTful API controller
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## Getting Started
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Documentations are now moved to [GitHub Wiki](https://github.com/Dreamacro/clash/wiki).
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## Advanced usage for this branch
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### TUN configuration
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Supports macOS, Linux and Windows.
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Support lwIP stack, a lightweight TCP/IP stack, it's recommended set to tun.
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On Windows, you should download the [Wintun](https://www.wintun.net) driver and copy `wintun.dll` into Clash home directory.
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```yaml
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# Enable the TUN listener
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tun:
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enable: true
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stack: lwip # lwip(recommended), system or gvisor
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dns-listen: 0.0.0.0:53 # additional dns server listen on TUN
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auto-route: true # auto set global route
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```
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### Rules configuration
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- Support rule `GEOSITE`.
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- Support rule `SCRIPT`.
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- Support `multiport` condition for rule `SRC-PORT` and `DST-PORT`.
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- Support `network` condition for all rules.
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- Support source IPCIDR condition for all rules, just append to the end.
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The `GEOSITE` databases via https://github.com/Loyalsoldier/v2ray-rules-dat.
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```yaml
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mode: rule
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script:
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shortcuts:
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quic: 'network == "udp" and dst_port == 443'
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privacy: '"analytics" in host or "adservice" in host or "firebase" in host or "safebrowsing" in host or "doubleclick" in host'
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rules:
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# rule SCRIPT
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- SCRIPT,quic,REJECT # Disable QUIC, same as rule "DST-PORT,443,REJECT,udp"
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- SCRIPT,privacy,REJECT
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# network(tcp/udp) condition for all rules
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- DOMAIN-SUFFIX,bilibili.com,DIRECT,tcp
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- DOMAIN-SUFFIX,bilibili.com,REJECT,udp
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# multiport condition for rules SRC-PORT and DST-PORT
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- DST-PORT,123/136/137-139,DIRECT,udp
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# rule GEOSITE
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- GEOSITE,category-ads-all,REJECT
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- GEOSITE,icloud@cn,DIRECT
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- GEOSITE,apple@cn,DIRECT
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- GEOSITE,apple-cn,DIRECT
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- GEOSITE,microsoft@cn,DIRECT
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- GEOSITE,facebook,PROXY
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- GEOSITE,youtube,PROXY
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- GEOSITE,geolocation-cn,DIRECT
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- GEOSITE,geolocation-!cn,PROXY
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# source IPCIDR condition for all rules in gateway proxy
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#- GEOSITE,apple,PROXY,192.168.1.88/32,192.168.1.99/32
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- GEOIP,telegram,PROXY,no-resolve
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- GEOIP,private,DIRECT,no-resolve
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- GEOIP,cn,DIRECT
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- MATCH,PROXY
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```
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### Script configuration
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Script enables users to programmatically select a policy for the packets with more flexibility.
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```yaml
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mode: script
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rules:
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# the rule GEOSITE just as a rule provider in mode script
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- GEOSITE,category-ads-all,Whatever
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- GEOSITE,youtube,Whatever
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- GEOSITE,geolocation-cn,Whatever
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script:
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code: |
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def main(ctx, metadata):
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if metadata["process_name"] == 'apsd':
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return "DIRECT"
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if metadata["network"] == 'udp' and metadata["dst_port"] == 443:
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return "REJECT"
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host = metadata["host"]
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for kw in ['analytics', 'adservice', 'firebase', 'bugly', 'safebrowsing', 'doubleclick']:
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if kw in host:
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return "REJECT"
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now = time.now()
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if (now.hour < 8 or now.hour > 17) and metadata["src_ip"] == '192.168.1.99':
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return "REJECT"
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if ctx.rule_providers["geosite:category-ads-all"].match(metadata):
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return "REJECT"
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if ctx.rule_providers["geosite:youtube"].match(metadata):
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ctx.log('[Script] domain %s matched youtube' % host)
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return "Proxy"
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if ctx.rule_providers["geosite:geolocation-cn"].match(metadata):
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ctx.log('[Script] domain %s matched geolocation-cn' % host)
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return "DIRECT"
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ip = metadata["dst_ip"]
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if host != "":
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ip = ctx.resolve_ip(host)
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if ip == "":
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return "Proxy"
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code = ctx.geoip(ip)
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if code == "LAN" or code == "CN":
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return "DIRECT"
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return "Proxy" # default policy for requests which are not matched by any other script
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```
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the context and metadata
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```ts
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interface Metadata {
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type: string // socks5、http
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network: string // tcp
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host: string
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process_name: string
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src_ip: string
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src_port: int
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dst_ip: string
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dst_port: int
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}
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interface Context {
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resolve_ip: (host: string) => string // ip string
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geoip: (ip: string) => string // country code
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log: (log: string) => void
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rule_providers: Record<string, { match: (metadata: Metadata) => boolean }>
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}
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```
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### Proxies configuration
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Support outbound transport protocol `VLESS`.
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The XTLS only support TCP transport by the XRAY-CORE.
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```yaml
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proxies:
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- name: "vless-tcp"
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type: vless
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server: server
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port: 443
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uuid: uuid
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network: tcp
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servername: example.com # AKA SNI
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# flow: xtls-rprx-direct # xtls-rprx-origin # enable XTLS
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# skip-cert-verify: true
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- name: "vless-ws"
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type: vless
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server: server
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port: 443
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uuid: uuid
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udp: true
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network: ws
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servername: example.com # priority over wss host
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# skip-cert-verify: true
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ws-path: /path
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ws-headers:
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Host: example.com
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```
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### IPTABLES auto-configuration
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Only work on Linux OS who support `iptables`, Clash will auto-configuration iptables for tproxy listener when `tproxy-port` value isn't zero.
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If `TPROXY` is enabled, the `TUN` must be disabled.
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```yaml
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# Enable the TPROXY listener
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tproxy-port: 9898
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# Disable the TUN listener
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tun:
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enable: false
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```
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Create user given name `clash`.
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Run Clash by user `clash` as a daemon.
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Create the systemd configuration file at /etc/systemd/system/clash.service:
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```
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[Unit]
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Description=Clash daemon, A rule-based proxy in Go.
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After=network.target
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[Service]
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Type=simple
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User=clash
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Group=clash
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CapabilityBoundingSet=cap_net_admin
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AmbientCapabilities=cap_net_admin
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Restart=always
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ExecStart=/usr/local/bin/clash -d /etc/clash
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[Install]
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WantedBy=multi-user.target
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```
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Launch clashd on system startup with:
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```shell
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$ systemctl enable clash
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```
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Launch clashd immediately with:
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```shell
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$ systemctl start clash
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```
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### Display Process name
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Clash add field `Process` to `Metadata` and prepare to get process name for Restful API `GET /connections`.
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To display process name in GUI please use https://yaling888.github.io/yacd/.
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## Development
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If you want to build an application that uses clash as a library, check out the the [GitHub Wiki](https://github.com/Dreamacro/clash/wiki/use-clash-as-a-library)
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## Credits
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* [riobard/go-shadowsocks2](https://github.com/riobard/go-shadowsocks2)
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* [v2ray/v2ray-core](https://github.com/v2ray/v2ray-core)
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* [WireGuard/wireguard-go](https://github.com/WireGuard/wireguard-go)
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## License
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This software is released under the GPL-3.0 license.
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[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2FDreamacro%2Fclash.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2FDreamacro%2Fclash?ref=badge_large)
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