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Diffstat (limited to 'constrain/notevi-only-guard.sh')
| -rwxr-xr-x | constrain/notevi-only-guard.sh | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/constrain/notevi-only-guard.sh b/constrain/notevi-only-guard.sh new file mode 100755 index 0000000..729f4d4 --- /dev/null +++ b/constrain/notevi-only-guard.sh @@ -0,0 +1,19 @@ +#!/bin/sh +# Claude Code PreToolUse hook (matcher: Bash): deny shell commands that read +# files without going through notevi. A guardrail, not a jail — it catches the +# common readers at command position, not every conceivable bypass. +cmd=$(jq -r '.tool_input.command // empty') + +readers='cat|head|tail|less|more|sed|awk|cut|rg|grep|egrep|fgrep|find|fd|strings|xxd|hexdump|od|tac|nl' +pattern='(^|[;&|(`]|\$\()[[:space:]]*('$readers')([[:space:]]|$)' + +if printf '%s' "$cmd" | grep -qE "$pattern"; then + echo "blocked: read/search files only through notevi (run 'notevi -doc' for usage)" >&2 + exit 2 +fi +vcs='jj[[:space:]]+(file[[:space:]]+show|diff)|git[[:space:]]+(show|diff|grep|cat-file|blame|log)' +if printf '%s' "$cmd" | grep -qE "(^|[;&|(\`])[[:space:]]*($vcs)"; then + echo "blocked: use 'notevi read -r REV FILE' / 'notevi grep -r REV' instead of raw jj/git reads" >&2 + exit 2 +fi +exit 0 |