40 lines
1.5 KiB
Markdown
40 lines
1.5 KiB
Markdown
---
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sidebarTitle: "Feature: Script Shortcuts"
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sidebarOrder: 6
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---
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# Script Shortcuts
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Clash Premium implements the Scripting feature powered by Python3, enableing users to programmatically select policies for the packets with dynamic flexibility.
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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).
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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`)
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**NOTE: ****`src_port`**** and ****`dst_port`**** are number**
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```yaml
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mode: Rule
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script:
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engine: expr # or starlark (10x to 20x slower)
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shortcuts:
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quic: network == 'udp' and dst_port == 443
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curl: resolve_process_name() == 'curl'
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# curl: resolve_process_path() == '/usr/bin/curl'
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rules:
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- SCRIPT,quic,REJECT
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```
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## Function Definitions
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```ts
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type resolve_ip = (host: string) => string // ip string
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type in_cidr = (ip: string, cidr: string) => boolean // ip in cidr
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type geoip = (ip: string) => string // country code
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type match_provider = (name: string) => boolean // in rule provider
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type resolve_process_name = () => string // find process name (curl .e.g)
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type resolve_process_path = () => string // find process path (/usr/bin/curl .e.g)
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```
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