dave
65 lines
2.4 KiB
Rust
65 lines
2.4 KiB
Rust
//! Shell I/O — the ONLY place in `service::shell/` that may perform side effects.
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//!
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//! Side effects here include: filesystem existence and canonicalization checks,
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//! process spawning via `std::process::Command`, and reading pipe output.
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//! All pure logic (pattern matching, output truncation, count parsing) lives in
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//! `path_guard.rs`.
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use super::Error;
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use std::path::{Path, PathBuf};
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/// Validate that `working_dir` is an absolute path that exists on disk and
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/// lies inside the project's `.huskies/worktrees/` or `.huskies/merge_workspace/`
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/// directory. Returns the canonicalized path on success.
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///
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/// # Errors
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/// - [`Error::Validation`] if the path is relative or does not exist.
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/// - [`Error::PathNotAllowed`] if the path is outside the allowed roots.
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/// - [`Error::Io`] if canonicalization fails.
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pub fn validate_working_dir(working_dir: &str, project_root: &Path) -> Result<PathBuf, Error> {
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let wd = PathBuf::from(working_dir);
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if !wd.is_absolute() {
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return Err(Error::Validation(
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"working_dir must be an absolute path".to_string(),
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));
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}
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if !wd.exists() {
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return Err(Error::Validation(format!(
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"working_dir does not exist: {working_dir}"
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)));
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}
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let worktrees_root = project_root.join(".huskies").join("worktrees");
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let canonical_wd = wd
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.canonicalize()
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.map_err(|e| Error::Io(format!("Cannot canonicalize working_dir: {e}")))?;
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let canonical_wt = if worktrees_root.exists() {
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worktrees_root
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.canonicalize()
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.map_err(|e| Error::Io(format!("Cannot canonicalize worktrees root: {e}")))?
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} else {
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return Err(Error::PathNotAllowed(
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"No worktrees directory found in project".to_string(),
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));
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};
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// Also allow the merge workspace so mergemaster can fix conflicts.
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let merge_workspace = project_root.join(".huskies").join("merge_workspace");
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let canonical_mw = merge_workspace.canonicalize().unwrap_or_default();
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let in_worktrees = canonical_wd.starts_with(&canonical_wt);
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let in_merge_ws =
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!canonical_mw.as_os_str().is_empty() && canonical_wd.starts_with(&canonical_mw);
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if !in_worktrees && !in_merge_ws {
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return Err(Error::PathNotAllowed(format!(
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"working_dir must be inside .huskies/worktrees/ or .huskies/merge_workspace/. Got: {working_dir}"
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)));
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}
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Ok(canonical_wd)
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}
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