813 lines
36 KiB
Bash
Executable File
813 lines
36 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -euo pipefail
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SCRIPT_DIR=$(cd -- "$(dirname -- "$0")" && pwd)
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START="$SCRIPT_DIR/start-agent-session.sh"
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INTERACTION_START="$SCRIPT_DIR/start-interaction-service.sh"
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ROOT=$(mktemp -d)
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FAKE_BIN=$(mktemp -d)
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TMUX_CALLS=$(mktemp)
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trap 'rm -rf "$ROOT" "$FAKE_BIN" "$TMUX_CALLS"' EXIT
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fail() {
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echo "FAIL: $*" >&2
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exit 1
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}
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pane_command_clears_environment() {
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local calls_file="$1"
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local -a argv=()
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local index
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mapfile -d '' -t argv < "$calls_file"
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for ((index = 0; index + 1 < ${#argv[@]}; index++)); do
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if [ "${argv[$index]}" = /usr/bin/env ] && [ "${argv[$((index + 1))]}" = -i ]; then
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return 0
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fi
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done
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return 1
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}
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print_pane_argv() {
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local calls_file="$1"
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local -a argv=()
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local bytes index
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mapfile -d '' -t argv < "$calls_file"
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bytes=$(wc -c < "$calls_file")
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printf 'observed pane argv: records=%s bytes=%s\n' "${#argv[@]}" "$bytes" >&2
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for ((index = 0; index < ${#argv[@]}; index++)); do
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printf ' [%03d] %q\n' "$index" "${argv[$index]}" >&2
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done
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}
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check_pane_environment_boundary() {
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local calls_file="$1"
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if pane_command_clears_environment "$calls_file"; then
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return 0
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fi
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print_pane_argv "$calls_file"
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return 1
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}
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contains_literal() {
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grep -F -- "$2" <<< "$1" >/dev/null
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}
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contains_line() {
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grep -xF -- "$2" <<< "$1" >/dev/null
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}
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# Portability regression: inspect the authoritative NUL-delimited argv instead
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# of piping a newline reconstruction through `grep -q` under pipefail. The old
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# pipeline could report failure after a successful match when an upstream
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# producer received SIGPIPE. A large trailing argument keeps that failure class
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# covered without making stream size part of the semantic contract.
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PORTABILITY_CALLS="$ROOT/portability-calls"
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printf -v PORTABILITY_PADDING '%*s' 32768 ''
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PORTABILITY_PADDING=${PORTABILITY_PADDING// /x}
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printf '%s\0' /usr/bin/env -i "$PORTABILITY_PADDING" > "$PORTABILITY_CALLS"
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pane_command_clears_environment "$PORTABILITY_CALLS" || \
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fail "valid large pane argv was rejected by the environment-boundary assertion"
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assert_pane_boundary_rejected() {
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local case_name="$1"
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local expected_records="$2"
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local diagnostic
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if diagnostic=$(check_pane_environment_boundary "$PORTABILITY_CALLS" 2>&1); then
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fail "pane boundary accepted invalid $case_name fixture"
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fi
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contains_literal "$diagnostic" "records=$expected_records bytes=" || \
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fail "pane argv diagnostic omitted counts for $case_name fixture"
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contains_literal "$diagnostic" '[000]' || \
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fail "pane argv diagnostic omitted indexed arguments for $case_name fixture"
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}
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printf '%s\0' tmux -i > "$PORTABILITY_CALLS"
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assert_pane_boundary_rejected missing-env 2
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printf '%s\0' /usr/bin/env HOME=/untrusted > "$PORTABILITY_CALLS"
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assert_pane_boundary_rejected missing-i 2
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printf '%s\0' /usr/bin/env HOME=/untrusted -i > "$PORTABILITY_CALLS"
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assert_pane_boundary_rejected non-adjacent-i 3
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printf '%s\0' -i /usr/bin/env > "$PORTABILITY_CALLS"
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assert_pane_boundary_rejected reversed-boundary 2
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cat > "$FAKE_BIN/tmux" <<'SHIM'
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#!/usr/bin/env bash
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set -euo pipefail
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printf '%s\0' "$@" >> "${MOSAIC_TEST_TMUX_CALLS:?}"
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args=("$@")
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index=0
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if [ "${args[0]:-}" = -L ]; then index=2; fi
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case "${args[$index]:-}" in
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has-session)
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# The holder always answers. MOSAIC_TEST_HELD_SESSIONS lets a case add
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# other targets that should answer too — without it there is no way to
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# model "tmux still reports the session" for a non-holder agent, and the
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# launcher's pane-pid-unresolved branch is unreachable from this harness.
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#
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# A listed target answers only AFTER new-session, because the launcher asks
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# this question twice about the same name: once before launching, where a
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# yes means "already running, nothing to do, exit 0", and once after, where
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# a yes means "the session survived". A shim that answered yes to both
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# would short-circuit at the first and never reach the branch under test —
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# it would look like coverage and measure the idempotency path instead.
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for argument in "${args[@]}"; do
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[ "$argument" = '=_holder:0.0' ] && exit 0
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case " ${MOSAIC_TEST_HELD_SESSIONS:-} " in
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*" $argument "*)
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if tr '\0' '\n' < "${MOSAIC_TEST_TMUX_CALLS:?}" | grep -qxF new-session; then
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exit 0
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fi
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;;
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esac
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done
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exit 1
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;;
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show-environment)
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printf '%s\n' \
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"HOME=${MOSAIC_TEST_HOME:?}" \
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'PATH=/usr/bin:/bin' \
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"PWD=${MOSAIC_TEST_HOME:?}" \
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"MOSAIC_FLEET_OWNER=${MOSAIC_TEST_FLEET_OWNER:?}" \
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'MOSAIC_TMUX_HOLDER=_holder' \
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'MOSAIC_TMUX_SOCKET=mosaic-test'
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exit 0
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;;
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list-panes) printf '%s\n' "${MOSAIC_TEST_PANE_PID:-}"; exit 0 ;;
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new-session)
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if [ "${MOSAIC_TEST_EXECUTE_PANE:-}" = 1 ]; then
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for ((index = 0; index < ${#args[@]}; index++)); do
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if [ "${args[$index]}" = /usr/bin/env ]; then
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"${args[@]:$index}"
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break
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fi
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done
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fi
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exit 0
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;;
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*) exit 0 ;;
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esac
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SHIM
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chmod +x "$FAKE_BIN/tmux"
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cat > "$FAKE_BIN/mosaic" <<'SHIM'
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#!/usr/bin/env bash
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set -euo pipefail
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env -0 > "${MOSAIC_HOME:?}/fleet/pane-environment"
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SHIM
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chmod +x "$FAKE_BIN/mosaic"
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# The runtime the rosters below name. The launcher resolves it against PANE_PATH
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# before spawning (#1241), so it has to exist somewhere the pane would find it —
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# not merely on the launcher's own PATH.
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printf '#!/usr/bin/env bash\nexit 0\n' > "$FAKE_BIN/pi"
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chmod +x "$FAKE_BIN/pi"
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# PANE_PATH is derived partly from `npm config get prefix`. Left to the real npm
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# it would splice whatever the host has installed into the path under test, and
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# the missing-binary cases below would pass or fail by accident of the machine.
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cat > "$FAKE_BIN/npm" <<'SHIM'
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#!/usr/bin/env bash
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printf '%s\n' "${MOSAIC_TEST_NPM_PREFIX:-/nonexistent}"
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SHIM
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chmod +x "$FAKE_BIN/npm"
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# PANE_PATH always ends in the system path. A host that installs these there can
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# not measure the missing-binary cases at all, and a green run would mean
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# nothing — so say so instead of passing.
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for host_binary in mosaic pi; do
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if PATH=/usr/local/bin:/usr/bin:/bin command -v "$host_binary" >/dev/null 2>&1; then
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fail "host provides '$host_binary' in the system path; missing-binary cases are not measurable here"
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fi
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done
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write_generated() {
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local home="$1"
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local agent="$2"
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mkdir -p "$home/fleet/agents" "$home/fleet/run"
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chmod 700 "$home" "$home/fleet" "$home/fleet/agents" "$home/fleet/run"
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printf '123e4567-e89b-12d3-a456-426614174000\n' > "$home/fleet/run/holder-owner"
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chmod 600 "$home/fleet/run/holder-owner"
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cat > "$home/fleet/agents/$agent.env.generated" <<EOF
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MOSAIC_AGENT_NAME=$agent
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MOSAIC_GIT_IDENTITY=$agent
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MOSAIC_AGENT_CLASS=code
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MOSAIC_AGENT_RUNTIME=pi
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MOSAIC_AGENT_MODEL=openai-codex/gpt-5.6-sol
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MOSAIC_AGENT_REASONING=high
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MOSAIC_AGENT_TOOL_POLICY=code
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MOSAIC_AGENT_WORKDIR=$home/work
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MOSAIC_TMUX_SOCKET=mosaic-test
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EOF
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chmod 600 "$home/fleet/agents/$agent.env.generated"
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mkdir -p "$home/work"
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install_pane_binaries "$home"
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}
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# `$PANE_HOME/.npm-global/bin` is one of the prefixes the launcher folds into
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# PANE_PATH, so this is the pane's own view of "installed", distinct from the
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# launcher's PATH. Tests that need a binary *absent* remove it from here.
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install_pane_binaries() {
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local pane_home="$1"
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mkdir -p "$pane_home/.npm-global/bin"
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local binary
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for binary in mosaic pi; do
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ln -sf "$FAKE_BIN/$binary" "$pane_home/.npm-global/bin/$binary"
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done
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}
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run_start() {
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local home="$1"
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local agent="$2"
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HOME="$home" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
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MOSAIC_TEST_PANE_PID="${MOSAIC_TEST_PANE_PID:-}" \
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MOSAIC_TEST_HELD_SESSIONS="${MOSAIC_TEST_HELD_SESSIONS:-}" \
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MOSAIC_TEST_FIXED_EPOCH="${MOSAIC_TEST_FIXED_EPOCH:-}" \
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MOSAIC_TEST_HOME="$home" \
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MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
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MOSAIC_HOME="$home" "$START" "$agent"
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}
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# Valid generated data launches only the fixed runtime argument array. It never
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# reads an agent-command string or constructs a bash -c pane payload.
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HOME_VALID="$ROOT/valid"
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AGENT_VALID="coder0"
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write_generated "$HOME_VALID" "$AGENT_VALID"
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# A live pane PID is part of what "valid launch" means. Until #1241 this case
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# ran with none, so the suite's one success path was itself a dead pane the
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# launcher reported as fine.
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MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_VALID" "$AGENT_VALID"
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valid_args=$(tr '\0' '\n' < "$TMUX_CALLS")
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contains_literal "$valid_args" new-session || fail "valid generated projection did not reach tmux"
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contains_literal "$valid_args" mosaic || fail "fixed mosaic launcher command missing"
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contains_literal "$valid_args" yolo || fail "fixed yolo launcher command missing"
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contains_literal "$valid_args" pi || fail "roster runtime missing"
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if contains_literal "$valid_args" 'bash -c'; then
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fail "launcher constructed a shell command payload"
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fi
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# ── Brain-home split (canon §2) ─────────────────────────────────────────
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# When MOSAIC_HOME is the default config home under $HOME and the host carries
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# $HOME/.mosaic/fleet/agents, seat envs resolve from the brain tree; the config
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# home still owns fleet/run (holder-owner) and remains a managed boundary.
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: > "$TMUX_CALLS"
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HOME_BRAIN="$ROOT/brain-home"
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CONFIG_HOME="$HOME_BRAIN/.config/mosaic"
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BRAIN="$HOME_BRAIN/.mosaic"
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mkdir -p "$CONFIG_HOME/fleet/run" "$BRAIN/fleet/agents" "$HOME_BRAIN/work"
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chmod 700 "$CONFIG_HOME" "$CONFIG_HOME/fleet" "$CONFIG_HOME/fleet/run" \
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"$BRAIN/fleet/agents" "$HOME_BRAIN/work"
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printf '123e4567-e89b-12d3-a456-426614174000\n' > "$CONFIG_HOME/fleet/run/holder-owner"
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chmod 600 "$CONFIG_HOME/fleet/run/holder-owner"
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cat > "$BRAIN/fleet/agents/coder-brain.env.generated" <<EOF
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MOSAIC_AGENT_NAME=coder-brain
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MOSAIC_AGENT_CLASS=code
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MOSAIC_AGENT_RUNTIME=pi
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MOSAIC_AGENT_MODEL=openai-codex/gpt-5.6-sol
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MOSAIC_AGENT_REASONING=high
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MOSAIC_AGENT_TOOL_POLICY=code
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MOSAIC_AGENT_WORKDIR=$HOME_BRAIN/work
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MOSAIC_TMUX_SOCKET=mosaic-test
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EOF
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chmod 600 "$BRAIN/fleet/agents/coder-brain.env.generated"
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install_pane_binaries "$HOME_BRAIN"
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HOME="$HOME_BRAIN" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
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MOSAIC_TEST_PANE_PID=$$ MOSAIC_TEST_HOME="$HOME_BRAIN" \
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MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
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MOSAIC_HOME="$CONFIG_HOME" "$START" coder-brain
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brain_args=$(tr '\0' '\n' < "$TMUX_CALLS")
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echo "$brain_args" | grep -qF new-session || fail "brain-home generated projection did not reach tmux"
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echo "$brain_args" | grep -qF 'coder-brain' || fail "brain-home agent env was not the launch source"
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[ -f "$BRAIN/fleet/agents/coder-brain.env.generated" ] || fail "brain generated env vanished"
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# Negative control: the SAME default-config-home shape but without
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# ~/.mosaic/fleet/agents — the config-home env tree is used directly (legacy).
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: > "$TMUX_CALLS"
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HOME_NOBRAIN="$ROOT/brainless-home"
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CONFIG_HOME_NOBRAIN="$HOME_NOBRAIN/.config/mosaic"
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write_generated "$CONFIG_HOME_NOBRAIN" "coder-legacy"
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install_pane_binaries "$HOME_NOBRAIN"
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HOME="$HOME_NOBRAIN" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
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MOSAIC_TEST_PANE_PID=$$ MOSAIC_TEST_HOME="$HOME_NOBRAIN" \
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MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
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MOSAIC_HOME="$CONFIG_HOME_NOBRAIN" "$START" coder-legacy
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legacy_args=$(tr '\0' '\n' < "$TMUX_CALLS")
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echo "$legacy_args" | grep -qF new-session || fail "legacy single-tree launch regressed"
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# The pane must start through an absolute clean-environment boundary. Its
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# runtime command remains an argv vector, but no holder/session environment
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# control variable can pass through the pane command.
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check_pane_environment_boundary "$TMUX_CALLS" || \
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fail "pane command did not use an adjacent /usr/bin/env -i boundary"
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# Git identity is generated authority, not an optional or independently mutable
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# local value. Each invalid form must fail before fake tmux receives a call.
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assert_git_identity_rejected() {
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local case_name="$1"
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local expected_code="$2"
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local home="$ROOT/git-identity-$case_name"
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local agent="coder-git-identity-$case_name"
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local generated="$home/fleet/agents/$agent.env.generated"
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write_generated "$home" "$agent"
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case "$case_name" in
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missing) grep -v '^MOSAIC_GIT_IDENTITY=' "$generated" > "$generated.next" && mv "$generated.next" "$generated" ;;
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unsafe) sed -i 's|^MOSAIC_GIT_IDENTITY=.*$|MOSAIC_GIT_IDENTITY=bad/identity|' "$generated" ;;
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mismatch) sed -i 's|^MOSAIC_GIT_IDENTITY=.*$|MOSAIC_GIT_IDENTITY=other-agent|' "$generated" ;;
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local-shadow)
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printf 'MOSAIC_GIT_IDENTITY=%s\n' "$agent" > "$home/fleet/agents/$agent.env.local"
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chmod 600 "$home/fleet/agents/$agent.env.local"
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;;
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*) fail "unknown Git identity rejection case: $case_name" ;;
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esac
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chmod 600 "$generated"
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: > "$TMUX_CALLS"
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if output=$(run_start "$home" "$agent" 2>&1); then
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fail "Git identity case $case_name was accepted"
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fi
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[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before Git identity $case_name rejection"
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contains_literal "$output" "code=$expected_code" || \
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fail "Git identity $case_name diagnostic omitted code $expected_code"
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}
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assert_git_identity_rejected missing missing-key
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assert_git_identity_rejected unsafe unsafe-git-identity
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assert_git_identity_rejected mismatch git-identity-mismatch
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assert_git_identity_rejected local-shadow generated-key-shadow
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# The generated-file parent is a security boundary too: even a private regular
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# file is untrusted if its parent can be replaced or written by another user.
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# Validation must happen before fake tmux receives even a has-session call.
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: > "$TMUX_CALLS"
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HOME_UNSAFE_PARENT="$ROOT/unsafe-parent"
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write_generated "$HOME_UNSAFE_PARENT" "coder-parent"
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chmod 777 "$HOME_UNSAFE_PARENT/fleet/agents"
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if output=$(run_start "$HOME_UNSAFE_PARENT" coder-parent 2>&1); then
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fail "generated file under a world-writable parent was accepted"
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fi
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[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before unsafe parent rejection"
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contains_literal "$output" 'code=unsafe-permissions' || fail "unsafe parent diagnostic missing"
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: > "$TMUX_CALLS"
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HOME_SYMLINK_PARENT="$ROOT/symlink-parent"
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write_generated "$HOME_SYMLINK_PARENT" "coder-symlink-parent"
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mv "$HOME_SYMLINK_PARENT/fleet/agents" "$HOME_SYMLINK_PARENT/private-agents"
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ln -s "$HOME_SYMLINK_PARENT/private-agents" "$HOME_SYMLINK_PARENT/fleet/agents"
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if output=$(run_start "$HOME_SYMLINK_PARENT" coder-symlink-parent 2>&1); then
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fail "generated file under a symlinked parent was accepted"
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fi
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[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before symlinked parent rejection"
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contains_literal "$output" 'code=unsafe-directory' || fail "symlinked parent diagnostic missing"
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# Every managed ancestor is a boundary: MOSAIC_HOME, fleet, and agents. A
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# symlink or group/world-writable ancestor must fail before environment parsing,
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# workdir creation, or tmux effects. The malformed local input proves parsing
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# was not reached when the ancestor rejection is reported.
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assert_managed_ancestor_rejected() {
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local ancestor="$1"
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local hazard="$2"
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local home="$ROOT/managed-${ancestor//\//-}-${hazard}"
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local agent="coder-managed-${ancestor//\//-}-${hazard}"
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local node
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write_generated "$home" "$agent"
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printf 'MOSAIC_AGENT_COMMAND=must-not-be-parsed\n' > "$home/fleet/agents/$agent.env.local"
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chmod 600 "$home/fleet/agents/$agent.env.local"
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rm -rf "$home/work"
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case "$ancestor" in
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MOSAIC_HOME) node="$home" ;;
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MOSAIC_HOME/fleet) node="$home/fleet" ;;
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MOSAIC_HOME/fleet/agents) node="$home/fleet/agents" ;;
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*) fail "unknown managed ancestor: $ancestor" ;;
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esac
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if [ "$hazard" = symlink ]; then
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local target="${node}-target"
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mv "$node" "$target"
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ln -s "$target" "$node"
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else
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chmod 777 "$node"
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fi
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: > "$TMUX_CALLS"
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if output=$(run_start "$home" "$agent" 2>&1); then
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fail "${hazard} $ancestor was accepted"
|
|
fi
|
|
[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before $hazard $ancestor rejection"
|
|
[ ! -e "$home/work" ] || fail "workdir was created before $hazard $ancestor rejection"
|
|
contains_literal "$output" 'code=unsafe-' || fail "managed ancestor diagnostic missing"
|
|
if contains_literal "$output" 'key=MOSAIC_AGENT_COMMAND'; then
|
|
fail "environment parsing ran before $hazard $ancestor rejection"
|
|
fi
|
|
}
|
|
|
|
for managed_ancestor in MOSAIC_HOME MOSAIC_HOME/fleet MOSAIC_HOME/fleet/agents; do
|
|
assert_managed_ancestor_rejected "$managed_ancestor" symlink
|
|
assert_managed_ancestor_rejected "$managed_ancestor" group-world-writable
|
|
done
|
|
|
|
# A local file cannot shadow any roster-derived generated key. Validation must
|
|
# happen before fake tmux receives even a has-session call.
|
|
: > "$TMUX_CALLS"
|
|
HOME_SHADOW="$ROOT/shadow"
|
|
write_generated "$HOME_SHADOW" "coder1"
|
|
printf 'MOSAIC_AGENT_RUNTIME=codex\n' > "$HOME_SHADOW/fleet/agents/coder1.env.local"
|
|
chmod 600 "$HOME_SHADOW/fleet/agents/coder1.env.local"
|
|
if output=$(run_start "$HOME_SHADOW" coder1 2>&1); then
|
|
fail "generated-key shadow was accepted"
|
|
fi
|
|
[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before generated-key shadow rejection"
|
|
contains_literal "$output" 'key=MOSAIC_AGENT_RUNTIME' || fail "shadow diagnostic omitted key"
|
|
contains_literal "$output" 'sha256=' || fail "shadow diagnostic omitted hash"
|
|
if contains_literal "$output" codex; then
|
|
fail "shadow diagnostic leaked value"
|
|
fi
|
|
|
|
# Arbitrary command compatibility is quarantined/rejected as data. Diagnostics
|
|
# may name the key and hash but must never echo the privileged command text.
|
|
: > "$TMUX_CALLS"
|
|
HOME_COMMAND="$ROOT/command"
|
|
write_generated "$HOME_COMMAND" "coder2"
|
|
COMMAND_VALUE='mosaic yolo codex --dangerous'
|
|
printf 'MOSAIC_AGENT_COMMAND=%s\n' "$COMMAND_VALUE" > "$HOME_COMMAND/fleet/agents/coder2.env.local"
|
|
chmod 600 "$HOME_COMMAND/fleet/agents/coder2.env.local"
|
|
if output=$(run_start "$HOME_COMMAND" coder2 2>&1); then
|
|
fail "arbitrary command override was accepted"
|
|
fi
|
|
[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before command rejection"
|
|
contains_literal "$output" 'key=MOSAIC_AGENT_COMMAND' || fail "command diagnostic omitted key"
|
|
contains_literal "$output" 'sha256=' || fail "command diagnostic omitted hash"
|
|
if contains_literal "$output" "$COMMAND_VALUE"; then
|
|
fail "command diagnostic leaked command value"
|
|
fi
|
|
|
|
# Group/world-readable local input is not trusted even when its syntax is safe.
|
|
: > "$TMUX_CALLS"
|
|
HOME_PERMS="$ROOT/perms"
|
|
write_generated "$HOME_PERMS" "coder3"
|
|
printf 'MOSAIC_RUNTIME_BIN=/opt/mosaic/bin\n' > "$HOME_PERMS/fleet/agents/coder3.env.local"
|
|
chmod 644 "$HOME_PERMS/fleet/agents/coder3.env.local"
|
|
if output=$(run_start "$HOME_PERMS" coder3 2>&1); then
|
|
fail "world-readable local input was accepted"
|
|
fi
|
|
[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before permissions rejection"
|
|
contains_literal "$output" 'code=unsafe-permissions' || fail "permission diagnostic missing"
|
|
|
|
# A unit/holder-like clean bootstrap must yield a pane with trusted HOME and
|
|
# computed PATH only. The pane command itself must not carry loader, shell
|
|
# control, arbitrary sentinel, or stale bootstrap variables.
|
|
: > "$TMUX_CALLS"
|
|
HOME_PANE_BOUNDARY="$ROOT/pane-boundary/.config/mosaic"
|
|
write_generated "$HOME_PANE_BOUNDARY" "coder-pane-boundary"
|
|
PANE_TRUSTED_HOME="${HOME_PANE_BOUNDARY%/.config/mosaic}"
|
|
PANE_STALE_HOME="$ROOT/stale-home"
|
|
PANE_STALE_PATH="$ROOT/stale-bin"
|
|
PANE_BASH_ENV="$ROOT/pane-boundary.bash-env"
|
|
printf 'MOSAIC_RUNTIME_BIN=%s\n' "$FAKE_BIN" > \
|
|
"$HOME_PANE_BOUNDARY/fleet/agents/coder-pane-boundary.env.local"
|
|
chmod 600 "$HOME_PANE_BOUNDARY/fleet/agents/coder-pane-boundary.env.local"
|
|
# This case does not go through run_start, so its pane binaries come from
|
|
# MOSAIC_RUNTIME_BIN=$FAKE_BIN in the env.local written above — not from the
|
|
# symlinks install_pane_binaries planted under the generated home, which this
|
|
# launcher never consults because HOME here is the trusted parent. That is a
|
|
# legitimate resolution path, but it means dropping MOSAIC_RUNTIME_BIN from
|
|
# this case on the belief that the symlinks cover it would break the #1241
|
|
# binary check rather than exercise it.
|
|
LD_PRELOAD='/not/loaded/by-clean-bootstrap.so' \
|
|
BASH_ENV="$PANE_BASH_ENV" \
|
|
MOSAIC_UNTRUSTED_SENTINEL='must-not-reach-pane' \
|
|
HOME="$PANE_STALE_HOME" \
|
|
PATH="$PANE_STALE_PATH" \
|
|
/usr/bin/env -i \
|
|
"HOME=$PANE_TRUSTED_HOME" \
|
|
"PATH=$FAKE_BIN:/usr/bin:/bin" \
|
|
"MOSAIC_HOME=$HOME_PANE_BOUNDARY" \
|
|
"MOSAIC_TEST_TMUX_CALLS=$TMUX_CALLS" \
|
|
"MOSAIC_TEST_HOME=$PANE_TRUSTED_HOME" \
|
|
MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
|
|
MOSAIC_TEST_EXECUTE_PANE=1 \
|
|
"MOSAIC_TEST_PANE_PID=$$" \
|
|
"$START" coder-pane-boundary
|
|
pane_args=$(tr '\0' '\n' < "$TMUX_CALLS")
|
|
contains_line "$pane_args" "HOME=$PANE_TRUSTED_HOME" || \
|
|
fail "pane did not restore trusted HOME"
|
|
contains_literal "$pane_args" "HOME=$PANE_STALE_HOME" && \
|
|
fail "pane inherited stale HOME"
|
|
contains_literal "$pane_args" "$PANE_STALE_PATH" && fail "pane inherited stale PATH"
|
|
for blocked in LD_PRELOAD= BASH_ENV= MOSAIC_UNTRUSTED_SENTINEL=; do
|
|
contains_literal "$pane_args" "$blocked" && fail "pane inherited $blocked"
|
|
done
|
|
|
|
check_pane_environment_boundary "$TMUX_CALLS" || \
|
|
fail "pane command did not use an adjacent /usr/bin/env -i boundary"
|
|
pane_environment=$(tr '\0' '\n' < "$HOME_PANE_BOUNDARY/fleet/pane-environment")
|
|
# Exercise the repository launcher at $START, not the independently installed
|
|
# host copy. Set-compare every declared generated projection entry with the
|
|
# launched process environment so a newly declared identity cannot be omitted
|
|
# by a hand-maintained per-variable assertion.
|
|
declared_generated_environment=$(sort "$HOME_PANE_BOUNDARY/fleet/agents/coder-pane-boundary.env.generated")
|
|
missing_or_changed_generated_environment=$(comm -23 \
|
|
<(printf '%s\n' "$declared_generated_environment") \
|
|
<(printf '%s\n' "$pane_environment" | sort))
|
|
if [ -n "$missing_or_changed_generated_environment" ]; then
|
|
missing_or_changed_keys=$(printf '%s\n' "$missing_or_changed_generated_environment" | cut -d= -f1 | paste -sd, -)
|
|
fail "runtime pane omitted or changed generated environment keys: $missing_or_changed_keys"
|
|
fi
|
|
contains_line "$pane_environment" "HOME=$PANE_TRUSTED_HOME" || \
|
|
fail "runtime pane did not receive trusted HOME"
|
|
contains_literal "$pane_environment" "$PANE_STALE_PATH" && fail "runtime pane received stale PATH"
|
|
for blocked in LD_PRELOAD= BASH_ENV= MOSAIC_UNTRUSTED_SENTINEL=; do
|
|
contains_literal "$pane_environment" "$blocked" && fail "runtime pane received $blocked"
|
|
done
|
|
|
|
# #1256. On a host with no system Node, tools/install.sh bootstraps one into
|
|
# ~/.mosaic/node/ and writes that directory to ~/.profile. The fleet unit runs
|
|
# `env -i ... bash --noprofile --norc`, so ~/.profile is never read — correctly, by
|
|
# design — and _build_runtime_bin_prefix does not list the bootstrap directory. Its
|
|
# `npm config get prefix` branch cannot cover the gap either: the installer points
|
|
# npm's prefix at ~/.npm-global, so that branch contributes the npm-global directory
|
|
# and never the Node one, however it resolves.
|
|
#
|
|
# The property under test is not "the string is in PATH". It is that the pane can
|
|
# EXECUTE a Node-shebang runtime binary — which is what `mosaic` is
|
|
# (`#!/usr/bin/env node`) and what actually failed: measured on a greenfield VM as
|
|
# `env: 'node': No such file or directory` after a clean install that reported success.
|
|
#
|
|
# So this case runs the pane for real and requires it to have run. A PATH-substring
|
|
# assertion would pass on a fix that put the directory in the wrong position, and it
|
|
# would keep passing if the pane later stopped running for some unrelated reason.
|
|
: > "$TMUX_CALLS"
|
|
HOME_NODE="$ROOT/bootstrap-node/.config/mosaic"
|
|
write_generated "$HOME_NODE" "coder-node"
|
|
NODE_PANE_HOME="${HOME_NODE%/.config/mosaic}"
|
|
NODE_BOOTSTRAP_BIN="$NODE_PANE_HOME/.mosaic/node/current/bin"
|
|
mkdir -p "$NODE_BOOTSTRAP_BIN"
|
|
|
|
# The bootstrapped runtime. It records that it ran, which is the evidence this case
|
|
# turns on: no node reachable from the pane means no marker.
|
|
cat > "$NODE_BOOTSTRAP_BIN/node" <<'SHIM'
|
|
#!/usr/bin/env bash
|
|
set -euo pipefail
|
|
env -0 > "${MOSAIC_HOME:?}/fleet/pane-environment"
|
|
SHIM
|
|
chmod +x "$NODE_BOOTSTRAP_BIN/node"
|
|
|
|
# write_generated plants its symlinks under the MOSAIC_HOME it is given; here the
|
|
# pane's HOME is the trusted parent, so the pane's view of "installed" is this
|
|
# directory instead. `pi` is what #1241 resolves against PANE_PATH; `mosaic` is what
|
|
# the pane then executes, and it is a Node script — not a bash script that would run
|
|
# anywhere and quietly hide the defect.
|
|
mkdir -p "$NODE_PANE_HOME/.npm-global/bin"
|
|
ln -sf "$FAKE_BIN/pi" "$NODE_PANE_HOME/.npm-global/bin/pi"
|
|
printf '#!/usr/bin/env node\n' > "$NODE_PANE_HOME/.npm-global/bin/mosaic"
|
|
chmod +x "$NODE_PANE_HOME/.npm-global/bin/mosaic"
|
|
|
|
# The npm branch is modelled ALIVE and still cannot close the gap, which is the
|
|
# stronger statement. An earlier draft of this case tried to model npm as absent —
|
|
# true on a real bootstrap host, where npm lives only in the Node directory — and it
|
|
# refused to run anywhere npm is in the system path, i.e. most machines. It was also
|
|
# the weaker claim: it would have proven only that a dead branch supplies nothing.
|
|
#
|
|
# On a bootstrap host the installer sets npm's prefix to ~/.npm-global. So even with
|
|
# `command -v npm` true and the branch executing, `npm config get prefix` yields the
|
|
# npm-global directory and never the Node one. The gap does not depend on whether
|
|
# that branch runs.
|
|
NODE_LAUNCHER_BIN="$ROOT/bootstrap-node-launcher-bin"
|
|
mkdir -p "$NODE_LAUNCHER_BIN"
|
|
ln -sf "$FAKE_BIN/tmux" "$NODE_LAUNCHER_BIN/tmux"
|
|
ln -sf "$FAKE_BIN/npm" "$NODE_LAUNCHER_BIN/npm"
|
|
|
|
/usr/bin/env -i \
|
|
"HOME=$NODE_PANE_HOME" \
|
|
"PATH=$NODE_LAUNCHER_BIN:/usr/bin:/bin" \
|
|
"MOSAIC_HOME=$HOME_NODE" \
|
|
"MOSAIC_TEST_TMUX_CALLS=$TMUX_CALLS" \
|
|
"MOSAIC_TEST_HOME=$NODE_PANE_HOME" \
|
|
"MOSAIC_TEST_NPM_PREFIX=$NODE_PANE_HOME/.npm-global" \
|
|
MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
|
|
MOSAIC_TEST_EXECUTE_PANE=1 \
|
|
"MOSAIC_TEST_PANE_PID=$$" \
|
|
"$START" coder-node
|
|
|
|
[ -f "$HOME_NODE/fleet/pane-environment" ] || \
|
|
fail "pane could not execute a Node-shebang runtime: $NODE_BOOTSTRAP_BIN is absent from PANE_PATH (#1256)"
|
|
node_pane_environment=$(tr '\0' '\n' < "$HOME_NODE/fleet/pane-environment")
|
|
# Colon-pad and match a whole element. A regex with `(^|:)` after `.*` looks like it
|
|
# does this and does not: an anchor cannot match mid-pattern, so it silently requires
|
|
# a leading colon and rejects the directory in FIRST position — which is where THIS
|
|
# FIXTURE puts it: it runs under `env -i` with no MOSAIC_RUNTIME_BIN, so the bootstrap
|
|
# directory leads. That is a property of the fixture, not of the fix — in general the
|
|
# directory sits second, after MOSAIC_RUNTIME_BIN. The colon padding makes the
|
|
# assertion position-independent either way, which is why it is written this way and
|
|
# not with an anchor. That produced a failure reading "pane ran but PANE_PATH does not
|
|
# carry <dir>" against a PATH whose first element was that dir.
|
|
node_pane_path=":$(printf '%s\n' "$node_pane_environment" | sed -n 's/^PATH=//p' | head -1):"
|
|
case "$node_pane_path" in
|
|
*":$NODE_BOOTSTRAP_BIN:"*) ;;
|
|
*) fail "pane ran but PANE_PATH does not carry $NODE_BOOTSTRAP_BIN (PATH=$node_pane_path)" ;;
|
|
esac
|
|
|
|
write_interaction_generated() {
|
|
local home="$1"
|
|
local agent="$2"
|
|
mkdir -p "$home/fleet/agents" "$home/fleet/run" "$home/work"
|
|
chmod 700 "$home" "$home/fleet" "$home/fleet/agents" "$home/fleet/run"
|
|
printf '123e4567-e89b-12d3-a456-426614174000\n' > "$home/fleet/run/holder-owner"
|
|
chmod 600 "$home/fleet/run/holder-owner"
|
|
cat > "$home/fleet/agents/$agent.env.generated" <<EOF
|
|
MOSAIC_AGENT_NAME=$agent
|
|
MOSAIC_GIT_IDENTITY=$agent
|
|
MOSAIC_AGENT_CLASS=operator-interaction
|
|
MOSAIC_AGENT_RUNTIME=pi
|
|
MOSAIC_AGENT_MODEL=openai/gpt-5.6-sol
|
|
MOSAIC_AGENT_REASONING=high
|
|
MOSAIC_AGENT_TOOL_POLICY=operator-interaction
|
|
MOSAIC_AGENT_WORKDIR=$home/work
|
|
MOSAIC_TMUX_SOCKET=mosaic-test
|
|
EOF
|
|
chmod 600 "$home/fleet/agents/$agent.env.generated"
|
|
}
|
|
|
|
run_interaction() {
|
|
local home="$1"
|
|
local agent="$2"
|
|
HOME="$home" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
|
|
MOSAIC_TEST_HOME="$home" \
|
|
MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
|
|
MOSAIC_HOME="$home" "$INTERACTION_START" "$agent"
|
|
}
|
|
|
|
write_heartbeat_local() {
|
|
local home="$1"
|
|
local agent="$2"
|
|
mkdir -p "$home/run"
|
|
cat > "$home/fleet/agents/$agent.env.local" <<EOF
|
|
MOSAIC_HEARTBEAT_RUN_DIR=$home/run
|
|
MOSAIC_HEARTBEAT_INTERVAL=1
|
|
EOF
|
|
chmod 600 "$home/fleet/agents/$agent.env.local"
|
|
}
|
|
|
|
wait_for_sidecar_status() {
|
|
local file="$1"
|
|
for _retry in $(seq 1 30); do
|
|
grep -qF 'status=ok' "$file" 2>/dev/null && return 0
|
|
sleep 0.1
|
|
done
|
|
fail "heartbeat sidecar did not resume after native marker became stale or absent"
|
|
}
|
|
|
|
# A fresh Pi-native marker is authoritative: the shell sidecar may start but
|
|
# must not overwrite Pi's busy/ok/model heartbeat. It must resume only when
|
|
# the marker is stale or absent.
|
|
HOME_NATIVE_FRESH="$ROOT/native-fresh"
|
|
write_generated "$HOME_NATIVE_FRESH" "coder-native-fresh"
|
|
write_heartbeat_local "$HOME_NATIVE_FRESH" "coder-native-fresh"
|
|
FRESH_HB="$HOME_NATIVE_FRESH/run/coder-native-fresh.hb"
|
|
printf 'ts=native\npid=1\nstatus=busy\nmodel=authoritative-model\n' > "$FRESH_HB"
|
|
touch "$FRESH_HB.native"
|
|
MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_NATIVE_FRESH" coder-native-fresh
|
|
sleep 0.3
|
|
fresh_content=$(cat "$FRESH_HB")
|
|
[ "$fresh_content" = 'ts=native
|
|
pid=1
|
|
status=busy
|
|
model=authoritative-model' ] || fail "fresh native heartbeat was overwritten"
|
|
|
|
HOME_NATIVE_STALE="$ROOT/native-stale"
|
|
write_generated "$HOME_NATIVE_STALE" "coder-native-stale"
|
|
write_heartbeat_local "$HOME_NATIVE_STALE" "coder-native-stale"
|
|
STALE_HB="$HOME_NATIVE_STALE/run/coder-native-stale.hb"
|
|
printf 'ts=native\npid=1\nstatus=busy\nmodel=stale-model\n' > "$STALE_HB"
|
|
touch -t 200001010000.00 "$STALE_HB.native"
|
|
# Hold the sidecar's observation epoch constant: assertion runtime must not age
|
|
# a fresh-marker mutant into the stale state that this fixture must distinguish.
|
|
STALE_OBSERVATION_EPOCH=$(date +%s)
|
|
MOSAIC_TEST_FIXED_EPOCH="$STALE_OBSERVATION_EPOCH" \
|
|
MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_NATIVE_STALE" coder-native-stale
|
|
wait_for_sidecar_status "$STALE_HB"
|
|
|
|
HOME_NATIVE_ABSENT="$ROOT/native-absent"
|
|
write_generated "$HOME_NATIVE_ABSENT" "coder-native-absent"
|
|
write_heartbeat_local "$HOME_NATIVE_ABSENT" "coder-native-absent"
|
|
ABSENT_HB="$HOME_NATIVE_ABSENT/run/coder-native-absent.hb"
|
|
printf 'ts=native\npid=1\nstatus=busy\nmodel=absent-model\n' > "$ABSENT_HB"
|
|
MOSAIC_TEST_PANE_PID=$$ run_start "$HOME_NATIVE_ABSENT" coder-native-absent
|
|
wait_for_sidecar_status "$ABSENT_HB"
|
|
|
|
# The interaction wrapper delegates to the shared strict parser before applying
|
|
# its pinned policy, so malformed projection data wins over profile diagnostics.
|
|
: > "$TMUX_CALLS"
|
|
HOME_INTERACTION_MALFORMED="$ROOT/interaction-malformed"
|
|
write_interaction_generated "$HOME_INTERACTION_MALFORMED" "interaction-malformed"
|
|
printf 'UNTRUSTED_BOOTSTRAP=value\n' >> "$HOME_INTERACTION_MALFORMED/fleet/agents/interaction-malformed.env.generated"
|
|
if output=$(run_interaction "$HOME_INTERACTION_MALFORMED" interaction-malformed 2>&1); then
|
|
fail "interaction wrapper accepted malformed generated data"
|
|
fi
|
|
[ ! -s "$TMUX_CALLS" ] || fail "tmux ran before interaction strict-parser rejection"
|
|
contains_literal "$output" 'code=unknown-key' || fail "interaction did not use shared strict parser first"
|
|
|
|
# A syntactically valid but policy-incompatible projection reaches the pinned
|
|
# interaction policy check only after strict parsing and never starts tmux.
|
|
: > "$TMUX_CALLS"
|
|
HOME_INTERACTION_POLICY="$ROOT/interaction-policy"
|
|
write_interaction_generated "$HOME_INTERACTION_POLICY" "interaction-policy"
|
|
sed -i 's|^MOSAIC_AGENT_RUNTIME=pi$|MOSAIC_AGENT_RUNTIME=codex|' \
|
|
"$HOME_INTERACTION_POLICY/fleet/agents/interaction-policy.env.generated"
|
|
if output=$(run_interaction "$HOME_INTERACTION_POLICY" interaction-policy 2>&1); then
|
|
fail "interaction wrapper accepted a policy-incompatible projection"
|
|
fi
|
|
interaction_policy_args=$(tr '\0' '\n' < "$TMUX_CALLS")
|
|
contains_literal "$interaction_policy_args" new-session && \
|
|
fail "interaction pinned-policy rejection created a tmux session"
|
|
contains_literal "$output" 'operator interaction service requires runtime pi' || \
|
|
fail "interaction pinned-policy check did not follow strict parsing"
|
|
|
|
# #1241. The pane runs `mosaic yolo <runtime>` against PANE_PATH. A binary
|
|
# missing from that path is a launch failure, and it has to be named before the
|
|
# session is created — after it, the diagnostic dies with the pane.
|
|
assert_missing_pane_binary_rejected() {
|
|
local binary="$1"
|
|
local home="$ROOT/missing-$binary"
|
|
local agent="coder-missing-$binary"
|
|
write_generated "$home" "$agent"
|
|
rm -f "$home/.npm-global/bin/$binary"
|
|
|
|
: > "$TMUX_CALLS"
|
|
local output
|
|
if output=$(MOSAIC_TEST_PANE_PID=$$ run_start "$home" "$agent" 2>&1); then
|
|
fail "launch succeeded with '$binary' absent from the pane PATH"
|
|
fi
|
|
echo "$output" | grep -qF 'code=missing-binary' || fail "missing '$binary' diagnostic missing"
|
|
echo "$output" | grep -qF "'$binary'" || fail "missing-binary diagnostic did not name $binary"
|
|
if tr '\0' '\n' < "$TMUX_CALLS" | grep -qF new-session; then
|
|
fail "launcher created a session it knew would die ($binary absent)"
|
|
fi
|
|
}
|
|
|
|
assert_missing_pane_binary_rejected mosaic
|
|
assert_missing_pane_binary_rejected pi
|
|
|
|
# #1241. tmux destroys a session when its pane command exits, so no pane PID a
|
|
# second after new-session means the runtime died on startup. This used to be a
|
|
# WARNING about the heartbeat sidecar followed by exit 0 — three layers above it
|
|
# then reported a fleet that was not running.
|
|
: > "$TMUX_CALLS"
|
|
HOME_DEAD_PANE="$ROOT/dead-pane"
|
|
write_generated "$HOME_DEAD_PANE" "coder-dead-pane"
|
|
if output=$(MOSAIC_TEST_PANE_PID='' run_start "$HOME_DEAD_PANE" coder-dead-pane 2>&1); then
|
|
fail "launcher reported success over a pane that did not survive"
|
|
fi
|
|
echo "$output" | grep -qF 'code=pane-did-not-survive' || fail "dead-pane diagnostic missing"
|
|
if echo "$output" | grep -qiF 'heartbeat'; then
|
|
fail "dead pane is still being reported as a heartbeat-sidecar problem"
|
|
fi
|
|
tr '\0' '\n' < "$TMUX_CALLS" | grep -qF new-session || \
|
|
fail "dead-pane case did not reach the launch it is measuring"
|
|
|
|
# #1241, the other way a pane fails. Above, tmux destroyed the session and
|
|
# has-session said so. Here the session is still there and no PID comes back
|
|
# after the retries — a different fault (the pane is alive but unusable, or
|
|
# tmux is answering inconsistently) that an operator has to be told apart from
|
|
# a runtime that died on startup.
|
|
#
|
|
# This case exists because the branch that handles it shipped with nothing able
|
|
# to reach it: the shim answered has-session only for the holder, so every
|
|
# non-holder agent landed in the session-is-gone branch no matter what. A
|
|
# defensive branch nothing exercises is the same shape as the bug this whole
|
|
# change is about, one layer down.
|
|
: > "$TMUX_CALLS"
|
|
HOME_NO_PID="$ROOT/pane-no-pid"
|
|
write_generated "$HOME_NO_PID" "coder-no-pid"
|
|
if output=$(MOSAIC_TEST_PANE_PID='' MOSAIC_TEST_HELD_SESSIONS='=coder-no-pid:0.0' \
|
|
run_start "$HOME_NO_PID" coder-no-pid 2>&1); then
|
|
fail "launcher reported success over a session with no resolvable pane PID"
|
|
fi
|
|
echo "$output" | grep -qF 'code=pane-pid-unresolved' || \
|
|
fail "session-present/no-PID was not reported as pane-pid-unresolved: $output"
|
|
if echo "$output" | grep -qF 'code=pane-did-not-survive'; then
|
|
fail "a session tmux still reports was diagnosed as a destroyed session"
|
|
fi
|
|
if echo "$output" | grep -qiF 'heartbeat'; then
|
|
fail "an unresolvable pane PID is still being reported as a heartbeat-sidecar problem"
|
|
fi
|
|
|
|
# Exact stop derives the socket exclusively from the validated generated
|
|
# projection and ignores an ambient socket supplied by the caller.
|
|
: > "$TMUX_CALLS"
|
|
HOME_STOP="$ROOT/stop"
|
|
write_generated "$HOME_STOP" "coder-stop"
|
|
HOME="$HOME_STOP" PATH="$FAKE_BIN:$PATH" MOSAIC_TEST_TMUX_CALLS="$TMUX_CALLS" \
|
|
MOSAIC_TEST_HOME="$HOME_STOP" \
|
|
MOSAIC_TEST_FLEET_OWNER=123e4567-e89b-12d3-a456-426614174000 \
|
|
MOSAIC_HOME="$HOME_STOP" MOSAIC_TMUX_SOCKET=ambient-socket "$START" --stop coder-stop
|
|
stop_args=$(tr '\0' '\n' < "$TMUX_CALLS")
|
|
contains_line "$stop_args" mosaic-test || fail "exact stop did not use the validated generated socket"
|
|
contains_line "$stop_args" kill-session || fail "exact stop did not request session termination"
|
|
contains_line "$stop_args" '=coder-stop' || fail "exact stop did not exact-match the generated agent name"
|
|
if contains_literal "$stop_args" ambient-socket; then
|
|
fail "exact stop trusted an ambient socket"
|
|
fi
|
|
|
|
echo 'ok - start-agent-session generated environment boundary'
|