use shell_command_parser::extract_commands;use std::path::{Path, PathBuf};use url::Url; /// Normalize path separators to forward slashes for consistent cross-platform patterns.fn normalize_separators(path_str: &str) -> String { path_str.replace('\\', "/")} /// Extracts the command name from a shell command using the shell parser.////// This parses the command properly to extract just the command name (first word),/// handling shell syntax correctly. Returns `None` if parsing fails or if the/// command name contains path separators (for security reasons).fn extract_command_name(command: &str) -> Option<String> { let commands = extract_commands(command)?; let first_command = commands.first()?; let first_token = first_command.split_whitespace().next()?; // Only allow alphanumeric commands with hyphens/underscores. // Reject paths like "./script.sh" or "/usr/bin/python" to prevent // users from accidentally allowing arbitrary script execution. if first_token .chars() .all(|c| c.is_alphanumeric() || c == '-' || c == '_') { Some(first_token.to_string()) } else { None }} /// Extracts a regex pattern from a terminal command based on the first token (command name).////// Returns `None` for commands starting with `./`, `/`, or other path-like prefixes./// This is a deliberate security decision: we only allow pattern-based "always allow"/// rules for well-known command names (like `cargo`, `npm`, `git`), not for arbitrary/// scripts or absolute paths which could be manipulated by an attacker.pub fn extract_terminal_pattern(command: &str) -> Option<String> { let command_name = extract_command_name(command)?; Some(format!("^{}\\b", regex::escape(&command_name)))} pub fn extract_terminal_pattern_display(command: &str) -> Option<String> { extract_command_name(command)} pub fn extract_path_pattern(path: &str) -> Option<String> { let parent = Path::new(path).parent()?; let parent_str = normalize_separators(parent.to_str()?); if parent_str.is_empty() || parent_str == "/" { return None; } Some(format!("^{}/", regex::escape(&parent_str)))} pub fn extract_path_pattern_display(path: &str) -> Option<String> { let parent = Path::new(path).parent()?; let parent_str = normalize_separators(parent.to_str()?); if parent_str.is_empty() || parent_str == "/" { return None; } Some(format!("{}/", parent_str))} fn common_parent_dir(path_a: &str, path_b: &str) -> Option<PathBuf> { let parent_a = Path::new(path_a).parent()?; let parent_b = Path::new(path_b).parent()?; let components_a: Vec<_> = parent_a.components().collect(); let components_b: Vec<_> = parent_b.components().collect(); let common_count = components_a .iter() .zip(components_b.iter()) .take_while(|(a, b)| a == b) .count(); if common_count == 0 { return None; } let common: PathBuf = components_a[..common_count].iter().collect(); Some(common)} pub fn extract_copy_move_pattern(input: &str) -> Option<String> { let (source, dest) = input.split_once('\n')?; let common = common_parent_dir(source, dest)?; let common_str = normalize_separators(common.to_str()?); if common_str.is_empty() || common_str == "/" { return None; } Some(format!("^{}/", regex::escape(&common_str)))} pub fn extract_copy_move_pattern_display(input: &str) -> Option<String> { let (source, dest) = input.split_once('\n')?; let common = common_parent_dir(source, dest)?; let common_str = normalize_separators(common.to_str()?); if common_str.is_empty() || common_str == "/" { return None; } Some(format!("{}/", common_str))} pub fn extract_url_pattern(url: &str) -> Option<String> { let parsed = Url::parse(url).ok()?; let domain = parsed.host_str()?; Some(format!("^https?://{}", regex::escape(domain)))} pub fn extract_url_pattern_display(url: &str) -> Option<String> { let parsed = Url::parse(url).ok()?; let domain = parsed.host_str()?; Some(domain.to_string())} #[cfg(test)]mod tests { use super::*; #[test] fn test_extract_terminal_pattern() { assert_eq!( extract_terminal_pattern("cargo build --release"), Some("^cargo\\b".to_string()) ); assert_eq!( extract_terminal_pattern("npm install"), Some("^npm\\b".to_string()) ); assert_eq!( extract_terminal_pattern("git-lfs pull"), Some("^git\\-lfs\\b".to_string()) ); assert_eq!( extract_terminal_pattern("my_script arg"), Some("^my_script\\b".to_string()) ); assert_eq!(extract_terminal_pattern("./script.sh arg"), None); assert_eq!(extract_terminal_pattern("/usr/bin/python arg"), None); } #[test] fn test_extract_terminal_pattern_display() { assert_eq!( extract_terminal_pattern_display("cargo build --release"), Some("cargo".to_string()) ); assert_eq!( extract_terminal_pattern_display("npm install"), Some("npm".to_string()) ); } #[test] fn test_extract_path_pattern() { assert_eq!( extract_path_pattern("/Users/alice/project/src/main.rs"), Some("^/Users/alice/project/src/".to_string()) ); assert_eq!( extract_path_pattern("src/lib.rs"), Some("^src/".to_string()) ); assert_eq!(extract_path_pattern("file.txt"), None); assert_eq!(extract_path_pattern("/file.txt"), None); } #[test] fn test_extract_path_pattern_display() { assert_eq!( extract_path_pattern_display("/Users/alice/project/src/main.rs"), Some("/Users/alice/project/src/".to_string()) ); assert_eq!( extract_path_pattern_display("src/lib.rs"), Some("src/".to_string()) ); } #[test] fn test_extract_url_pattern() { assert_eq!( extract_url_pattern("https://github.com/user/repo"), Some("^https?://github\\.com".to_string()) ); assert_eq!( extract_url_pattern("http://example.com/path?query=1"), Some("^https?://example\\.com".to_string()) ); assert_eq!(extract_url_pattern("not a url"), None); } #[test] fn test_extract_url_pattern_display() { assert_eq!( extract_url_pattern_display("https://github.com/user/repo"), Some("github.com".to_string()) ); assert_eq!( extract_url_pattern_display("http://api.example.com/v1/users"), Some("api.example.com".to_string()) ); } #[test] fn test_special_chars_are_escaped() { assert_eq!( extract_path_pattern("/path/with (parens)/file.txt"), Some("^/path/with \\(parens\\)/".to_string()) ); assert_eq!( extract_url_pattern("https://test.example.com/path"), Some("^https?://test\\.example\\.com".to_string()) ); } #[test] fn test_extract_copy_move_pattern_same_directory() { assert_eq!( extract_copy_move_pattern( "/Users/alice/project/src/old.rs\n/Users/alice/project/src/new.rs" ), Some("^/Users/alice/project/src/".to_string()) ); } #[test] fn test_extract_copy_move_pattern_sibling_directories() { assert_eq!( extract_copy_move_pattern( "/Users/alice/project/src/old.rs\n/Users/alice/project/dst/new.rs" ), Some("^/Users/alice/project/".to_string()) ); } #[test] fn test_extract_copy_move_pattern_no_common_prefix() { assert_eq!( extract_copy_move_pattern("/home/file.txt\n/tmp/file.txt"), None ); } #[test] fn test_extract_copy_move_pattern_relative_paths() { assert_eq!( extract_copy_move_pattern("src/old.rs\nsrc/new.rs"), Some("^src/".to_string()) ); } #[test] fn test_extract_copy_move_pattern_display() { assert_eq!( extract_copy_move_pattern_display( "/Users/alice/project/src/old.rs\n/Users/alice/project/dst/new.rs" ), Some("/Users/alice/project/".to_string()) ); } #[test] fn test_extract_copy_move_pattern_no_arrow() { assert_eq!(extract_copy_move_pattern("just/a/path.rs"), None); assert_eq!(extract_copy_move_pattern_display("just/a/path.rs"), None); }}
use shell_command_parser::extract_commands;
use std::path::{Path, PathBuf};
use url::Url;
/// Normalize path separators to forward slashes for consistent cross-platform patterns.
fn normalize_separators(path_str: &str) -> String {
path_str.replace('\\', "/")
}
/// Extracts the command name from a shell command using the shell parser.
///
/// This parses the command properly to extract just the command name (first word),
/// handling shell syntax correctly. Returns `None` if parsing fails or if the
/// command name contains path separators (for security reasons).
fn extract_command_name(command: &str) -> Option<String> {
let commands = extract_commands(command)?;
let first_command = commands.first()?;
let first_token = first_command.split_whitespace().next()?;
// Only allow alphanumeric commands with hyphens/underscores.
// Reject paths like "./script.sh" or "/usr/bin/python" to prevent
// users from accidentally allowing arbitrary script execution.
if first_token
.chars()
.all(|c| c.is_alphanumeric() || c == '-' || c == '_')
{
Some(first_token.to_string())
} else {
None
}
}
/// Extracts a regex pattern from a terminal command based on the first token (command name).
///
/// Returns `None` for commands starting with `./`, `/`, or other path-like prefixes.
/// This is a deliberate security decision: we only allow pattern-based "always allow"
/// rules for well-known command names (like `cargo`, `npm`, `git`), not for arbitrary
/// scripts or absolute paths which could be manipulated by an attacker.
pub fn extract_terminal_pattern(command: &str) -> Option<String> {
let command_name = extract_command_name(command)?;
Some(format!("^{}\\b", regex::escape(&command_name)))
}
pub fn extract_terminal_pattern_display(command: &str) -> Option<String> {
extract_command_name(command)
}
pub fn extract_path_pattern(path: &str) -> Option<String> {
let parent = Path::new(path).parent()?;
let parent_str = normalize_separators(parent.to_str()?);
if parent_str.is_empty() || parent_str == "/" {
return None;
}
Some(format!("^{}/", regex::escape(&parent_str)))
}
pub fn extract_path_pattern_display(path: &str) -> Option<String> {
let parent = Path::new(path).parent()?;
let parent_str = normalize_separators(parent.to_str()?);
if parent_str.is_empty() || parent_str == "/" {
return None;
}
Some(format!("{}/", parent_str))
}
fn common_parent_dir(path_a: &str, path_b: &str) -> Option<PathBuf> {
let parent_a = Path::new(path_a).parent()?;
let parent_b = Path::new(path_b).parent()?;
let components_a: Vec<_> = parent_a.components().collect();
let components_b: Vec<_> = parent_b.components().collect();
let common_count = components_a
.iter()
.zip(components_b.iter())
.take_while(|(a, b)| a == b)
.count();
if common_count == 0 {
return None;
}
let common: PathBuf = components_a[..common_count].iter().collect();
Some(common)
}
pub fn extract_copy_move_pattern(input: &str) -> Option<String> {
let (source, dest) = input.split_once('\n')?;
let common = common_parent_dir(source, dest)?;
let common_str = normalize_separators(common.to_str()?);
if common_str.is_empty() || common_str == "/" {
return None;
}
Some(format!("^{}/", regex::escape(&common_str)))
}
pub fn extract_copy_move_pattern_display(input: &str) -> Option<String> {
let (source, dest) = input.split_once('\n')?;
let common = common_parent_dir(source, dest)?;
let common_str = normalize_separators(common.to_str()?);
if common_str.is_empty() || common_str == "/" {
return None;
}
Some(format!("{}/", common_str))
}
pub fn extract_url_pattern(url: &str) -> Option<String> {
let parsed = Url::parse(url).ok()?;
let domain = parsed.host_str()?;
Some(format!("^https?://{}", regex::escape(domain)))
}
pub fn extract_url_pattern_display(url: &str) -> Option<String> {
let parsed = Url::parse(url).ok()?;
let domain = parsed.host_str()?;
Some(domain.to_string())
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_extract_terminal_pattern() {
assert_eq!(
extract_terminal_pattern("cargo build --release"),
Some("^cargo\\b".to_string())
);
assert_eq!(
extract_terminal_pattern("npm install"),
Some("^npm\\b".to_string())
);
assert_eq!(
extract_terminal_pattern("git-lfs pull"),
Some("^git\\-lfs\\b".to_string())
);
assert_eq!(
extract_terminal_pattern("my_script arg"),
Some("^my_script\\b".to_string())
);
assert_eq!(extract_terminal_pattern("./script.sh arg"), None);
assert_eq!(extract_terminal_pattern("/usr/bin/python arg"), None);
}
#[test]
fn test_extract_terminal_pattern_display() {
assert_eq!(
extract_terminal_pattern_display("cargo build --release"),
Some("cargo".to_string())
);
assert_eq!(
extract_terminal_pattern_display("npm install"),
Some("npm".to_string())
);
}
#[test]
fn test_extract_path_pattern() {
assert_eq!(
extract_path_pattern("/Users/alice/project/src/main.rs"),
Some("^/Users/alice/project/src/".to_string())
);
assert_eq!(
extract_path_pattern("src/lib.rs"),
Some("^src/".to_string())
);
assert_eq!(extract_path_pattern("file.txt"), None);
assert_eq!(extract_path_pattern("/file.txt"), None);
}
#[test]
fn test_extract_path_pattern_display() {
assert_eq!(
extract_path_pattern_display("/Users/alice/project/src/main.rs"),
Some("/Users/alice/project/src/".to_string())
);
assert_eq!(
extract_path_pattern_display("src/lib.rs"),
Some("src/".to_string())
);
}
#[test]
fn test_extract_url_pattern() {
assert_eq!(
extract_url_pattern("https://github.com/user/repo"),
Some("^https?://github\\.com".to_string())
);
assert_eq!(
extract_url_pattern("http://example.com/path?query=1"),
Some("^https?://example\\.com".to_string())
);
assert_eq!(extract_url_pattern("not a url"), None);
}
#[test]
fn test_extract_url_pattern_display() {
assert_eq!(
extract_url_pattern_display("https://github.com/user/repo"),
Some("github.com".to_string())
);
assert_eq!(
extract_url_pattern_display("http://api.example.com/v1/users"),
Some("api.example.com".to_string())
);
}
#[test]
fn test_special_chars_are_escaped() {
assert_eq!(
extract_path_pattern("/path/with (parens)/file.txt"),
Some("^/path/with \\(parens\\)/".to_string())
);
assert_eq!(
extract_url_pattern("https://test.example.com/path"),
Some("^https?://test\\.example\\.com".to_string())
);
}
#[test]
fn test_extract_copy_move_pattern_same_directory() {
assert_eq!(
extract_copy_move_pattern(
"/Users/alice/project/src/old.rs\n/Users/alice/project/src/new.rs"
),
Some("^/Users/alice/project/src/".to_string())
);
}
#[test]
fn test_extract_copy_move_pattern_sibling_directories() {
assert_eq!(
extract_copy_move_pattern(
"/Users/alice/project/src/old.rs\n/Users/alice/project/dst/new.rs"
),
Some("^/Users/alice/project/".to_string())
);
}
#[test]
fn test_extract_copy_move_pattern_no_common_prefix() {
assert_eq!(
extract_copy_move_pattern("/home/file.txt\n/tmp/file.txt"),
None
);
}
#[test]
fn test_extract_copy_move_pattern_relative_paths() {
assert_eq!(
extract_copy_move_pattern("src/old.rs\nsrc/new.rs"),
Some("^src/".to_string())
);
}
#[test]
fn test_extract_copy_move_pattern_display() {
assert_eq!(
extract_copy_move_pattern_display(
"/Users/alice/project/src/old.rs\n/Users/alice/project/dst/new.rs"
),
Some("/Users/alice/project/".to_string())
);
}
#[test]
fn test_extract_copy_move_pattern_no_arrow() {
assert_eq!(extract_copy_move_pattern("just/a/path.rs"), None);
assert_eq!(extract_copy_move_pattern_display("just/a/path.rs"), None);
}
}