Mehmet InceandClaude Opus 5
3b0e899029
The name a theme installs under is derived from its repo URL, and holding it to an allowlist made that allowlist a naming convention nobody had written down. It was also tighter than the harm it exists to stop: `+` is not shell syntax and a leading `_` is neither the `..` climb nor the dash basename reads as an option, so `omarchy-c++-theme` was refused for nothing. Widen the set to those two and say what it is where a theme author is already picking a name. The leading character stays out of `.` and `-`, which is the part that does the work. Reported-by: Luis Alvarez (lalvarezt) Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Fd3RCHxwjEbMXoSYB9Aiso
172 lines
6.7 KiB
Bash
Executable File
172 lines
6.7 KiB
Bash
Executable File
#!/bin/bash
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set -euo pipefail
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# omarchy-theme-install feeds a pasted URL to git and a name derived from it to
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# rm, and omarchy-theme-remove feeds its argument to rm. Both are exercised here
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# with git and the themes directory stubbed, so a guard that stopped working
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# shows up as a clone or a removal that should never have been reached.
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source "$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)/base-test.sh"
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test_tmp=$(mktemp -d)
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trap 'rm -rf "$test_tmp"' EXIT
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mock_bin="$test_tmp/bin"
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mkdir -p "$mock_bin"
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cat >"$mock_bin/git" <<'SH'
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#!/bin/bash
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printf '%s\n' "$*" >>"$OMARCHY_TEST_GIT_CALLS"
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[[ $1 == "clone" ]] && mkdir -p "${*: -1}"
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exit 0
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SH
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cat >"$mock_bin/gum" <<'SH'
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#!/bin/bash
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exit 1
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SH
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for command in omarchy-theme-set omarchy-notification-send omarchy-menu-select; do
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printf '#!/bin/bash\nprintf "%%s\\n" "$*" >>"$OMARCHY_TEST_THEME_CALLS"\nexit 0\n' >"$mock_bin/$command"
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done
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chmod +x "$mock_bin"/*
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git_calls="$test_tmp/git-calls"
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theme_calls="$test_tmp/theme-calls"
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install_theme() {
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: >"$git_calls"
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: >"$theme_calls"
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HOME="$test_tmp/home" PATH="${2-$mock_bin:$ROOT/bin:$PATH}" \
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OMARCHY_TEST_GIT_CALLS="$git_calls" OMARCHY_TEST_THEME_CALLS="$theme_calls" \
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bash "$ROOT/bin/omarchy-theme-install" "$1" >"$test_tmp/out" 2>&1 || return $?
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}
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mkdir -p "$test_tmp/home/.config/omarchy/themes"
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# A URL git would read as an option or as a remote helper to run.
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for url in "-x" "--upload-pack=touch /tmp/pwned" "ext::sh -c id" "fd::0,1"; do
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if install_theme "$url"; then
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fail "omarchy-theme-install refuses the URL '$url'"
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fi
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[[ ! -s $git_calls ]] || fail "omarchy-theme-install refuses '$url' before running git" "$(cat "$git_calls")"
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done
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pass "a URL that names a git option or a transport helper never reaches git"
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# git resolves git-remote-<scheme> for any scheme it does not implement itself,
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# so the `://` spelling of a helper has to be refused as well as the `::` one.
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for url in "ext://sh -c id" "fd://17" "gcrypt://example.com/x"; do
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if install_theme "$url"; then
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fail "omarchy-theme-install refuses the URL '$url'"
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fi
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[[ ! -s $git_calls ]] || fail "omarchy-theme-install refuses '$url' before running git" "$(cat "$git_calls")"
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done
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pass "a URL naming a transport git does not implement never reaches git"
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# The checker is a separate command, so its absence has to refuse the URL rather
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# than wave it through to git.
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if install_theme "https://github.com/example/omarchy-cool-theme.git" "$mock_bin:$PATH"; then
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fail "omarchy-theme-install refuses a URL it cannot check"
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fi
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[[ ! -s $git_calls ]] ||
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fail "omarchy-theme-install refuses an unchecked URL before running git" "$(cat "$git_calls")"
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pass "a missing url checker refuses the URL instead of cloning it"
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# A URL whose derived name would escape the themes directory.
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for url in "https://example.com/..git" "https://example.com/.git"; do
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if install_theme "$url"; then
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fail "omarchy-theme-install refuses the derived name from '$url'"
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fi
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[[ ! -s $git_calls ]] || fail "omarchy-theme-install refuses '$url' before running git" "$(cat "$git_calls")"
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done
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pass "a URL whose name would climb out of the themes directory never reaches git"
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# The derived name outlives the clone: it is the theme's directory name, and
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# Style > Unlock builds a command line out of the name the picker returned. A
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# repo whose name carries shell syntax would hand that picker its own command,
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# so the name is refused here rather than quoted at each place it lands.
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for url in \
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"https://example.com/omarchy-a';id;'b-theme.git" \
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'https://example.com/a$(id).git' \
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'https://example.com/a`id`.git' \
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"https://example.com/a b.git" \
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"https://example.com/-a.git"; do
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if install_theme "$url"; then
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fail "omarchy-theme-install refuses the derived name from '$url'"
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fi
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[[ ! -s $git_calls ]] || fail "omarchy-theme-install refuses '$url' before running git" "$(cat "$git_calls")"
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done
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pass "a URL whose name would be shell syntax never reaches git"
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# And the check is an allowlist, so the punctuation a real theme name uses has
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# to keep working.
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install_theme "https://github.com/example/omarchy-tokyo_night.2-theme.git" ||
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fail "omarchy-theme-install accepts the punctuation a theme name uses"
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grep -Fq "/themes/tokyo_night.2" "$git_calls" ||
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fail "omarchy-theme-install derives a name carrying an underscore and a dot" "$(cat "$git_calls")"
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pass "a theme name may still hold an underscore, a dot, and a dash"
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# A plus is neither path-climb nor shell syntax, and a leading underscore is
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# neither the `..` climb nor the dash that reads as an option, so the allowlist
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# keeps both rather than stranding a repo that names itself with them.
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install_theme "https://github.com/example/omarchy-c++-theme.git" ||
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fail "omarchy-theme-install accepts a name holding a plus"
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grep -Fq "/themes/c++" "$git_calls" ||
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fail "omarchy-theme-install derives a name carrying a plus" "$(cat "$git_calls")"
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install_theme "https://github.com/example/_private.git" ||
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fail "omarchy-theme-install accepts a name starting with an underscore"
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grep -Fq "/themes/_private" "$git_calls" ||
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fail "omarchy-theme-install derives a name starting with an underscore" "$(cat "$git_calls")"
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pass "a plus and a leading underscore are still usable theme names"
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# basename reads a leading dash as an option once the scp-style prefix is gone.
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install_theme "host:-s/foo.git" || fail "omarchy-theme-install accepts a normal scp-style URL"
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grep -Fq -- "-- host:-s/foo.git" "$git_calls" || fail "omarchy-theme-install passes the URL after --" "$(cat "$git_calls")"
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grep -Fq "/themes/foo" "$git_calls" || fail "omarchy-theme-install derives 'foo', not '.git'" "$(cat "$git_calls")"
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pass "a dash inside the path does not become a basename option"
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# And the ordinary case still works.
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install_theme "https://github.com/example/omarchy-cool-theme.git" || fail "omarchy-theme-install clones a normal URL"
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grep -Fq "/themes/cool" "$git_calls" || fail "omarchy-theme-install derives the theme name" "$(cat "$git_calls")"
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grep -Fxq "cool" "$theme_calls" || fail "omarchy-theme-install applies the theme it installed" "$(cat "$theme_calls")"
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pass "an ordinary theme URL still clones and applies"
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# omarchy-theme-remove joins its argument into the path it deletes.
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remove_theme() {
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: >"$theme_calls"
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HOME="$test_tmp/home" PATH="$mock_bin:$PATH" OMARCHY_TEST_THEME_CALLS="$theme_calls" \
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bash "$ROOT/bin/omarchy-theme-remove" "$1" >"$test_tmp/out" 2>&1 || return $?
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}
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canary="$test_tmp/home/.config/omarchy/canary"
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printf 'still here\n' >"$canary"
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for name in ".." "." "../../evil" ".git"; do
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if remove_theme "$name"; then
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fail "omarchy-theme-remove refuses the theme name '$name'"
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fi
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[[ -f $canary ]] || fail "omarchy-theme-remove refuses '$name' before removing anything"
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done
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pass "a theme name cannot climb out of the themes directory on the way to rm"
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