3 Commits

Include renames

Author	SHA1	Message	Date
ChuckandClaude Opus 5.5	3967a6cffc	fix(security): re-harden root sudo helpers; installer fixes; ARCHITECTURE and PERMISSIONS docs (#640) ... * docs: add ARCHITECTURE and PERMISSIONS guides ARCHITECTURE.md maps the processes, the state the display and web services share through the cache, the display loop, the plugin system, the web UI and the update path, with links into the code and a where-to-start table. PERMISSIONS.md lists who owns what after install, both sudoers files (and why iptables is not granted), the polkit rule, and which scripts/fix_perms script to run as which user. Both are linked from the docs index, along with the MQTT bridge README and src/common/README.md. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: correct stale setup, service and troubleshooting claims - README: quick actions run systemctl on ledmatrix.service (run.py), not display_controller.py; use_short_date_format has no effect; the installer uses system pip with --break-system-packages, not a venv. - CONFIG_DEBUGGING: LEDMATRIX_DEBUG must be "true"; logs are in journald. - GETTING_STARTED, WEB_INTERFACE_GUIDE, TROUBLESHOOTING: enabling a plugin, plugin settings, brightness and Vegas settings apply without a restart; matrix hardware settings still need one. - TROUBLESHOOTING: install dependencies with sudo so the root service sees them; point permission problems at PERMISSIONS.md instead of a project-wide chown. - ADVANCED_FEATURES: real BackgroundDataService stats keys; Vegas hooks return VegasDisplayMode and None falls back to capture; cache files are 0660; fix_web_permissions.sh runs as the web user and does not touch sudoers. - STARLARK_APPS_GUIDE: only the linux-arm64 pixlet binary is downloaded. - HOW_TO_RUN_TESTS: test class examples that exist. - CLAUDE.md: PluginStoreManager, plugin_dirs.py, monorepo installs via the Trees API with ZIP fallback, requirements.txt is optional. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: mark deprecated plugin APIs and state manifest fields once Methods @deprecated("3.7.0") (the set pinned in test_deprecation.py) were shown as current API in the quick reference, API reference, advanced guide, development guide and FONT_MANAGER. Each is now marked deprecated with its replacement. FONT_MANAGER is rewritten around the current API; the override editor is gone and override methods are deprecated. Required manifest fields were stated three different ways. The API reference now has one section: the 7 schema-required fields, the 4 the store refuses without, class_name for the loader, and the 8 to set. The other guides link to it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs: document every src/common module and every widget - src/common/README.md covered 7 of 17 modules. It now has a table of all of them (purpose, whether plugins import it, release to floor on), a short entry each, and logging advice that matches the code. - SPORTS_UNIFICATION listed two shared modules and called sports_helpers the first; it now lists all six. - The widgets README lists all 28 registered widgets plus the support files, and absorbs the parts that only docs/widget-guide.md had (x-options.labels, x-advanced, x-display hidden, plugin-file-manager). docs/widget-guide.md is now a pointer to it. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(security): fix_web_permissions.sh re-hardens the root sudo helpers The script chowns the whole project to the web user. That included scripts/fix_perms/safe_plugin_rm.sh and safe_pip_install.sh -- the two helpers /etc/sudoers.d/ledmatrix_web lets the web user run as root -- so running it turned both into a root shell for whoever can edit them. It also re-grouped config_secrets.json away from ledmatrix. After the chown it now does what first_time_install.sh's Steps 11 and 11.1 do: helpers back to root:root 755, and config_secrets.json back to the web unit's User=:ledmatrix 640. Each step is non-fatal and prints the manual command if it fails. Also fixes what the script and its docs claimed: it never configured sudoers, its closing hint pointed at ./configure_web_sudo.sh (wrong path), and the README and ADVANCED_FEATURES.md said to run it with sudo, which it refuses. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(security): validate and harden every sudoers drop-in the scripts write configure_wifi_permissions.sh copied its rules into /etc/sudoers.d/ledmatrix_wifi without `visudo -c`. A malformed drop-in makes sudo refuse every command for every user, which on a headless Pi leaves no way back in. It now checks first and leaves the installed file alone when the rules do not parse, as the other two writers do. (It already used mktemp, so that part of the review did not apply.) It also grants the two literal commands wifi_manager.py runs for NetworkManager's shared-mode dnsmasq drop-in -- `cp /tmp/ledmatrix-nm-dnsmasq.conf .../dnsmasq-shared.d/ledmatrix-captive.conf` and `rm -f` of that file. The directory's mkdir was granted, the file was not. Both are pinned in test_sudo_allowlist_covers_calls.py. configure_web_sudo.sh wrote its rules to /tmp/ledmatrix_web_sudoers_$$, a predictable name in a world-writable directory; it now uses mktemp with an EXIT trap, as first_time_install.sh does. It sets mode 440 on the installed file instead of leaving the temp file's mode, and finds visudo in /usr/sbin when that is not on the user's PATH, which skipped the check silently. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): escape the project path in the DNS-fix and MQTT unit renderers install_dns_fix.sh and install_mqtt_bridge.sh substituted __PROJECT_ROOT_DIR__ with the raw path, while the other three renderers go through sed_escape_replacement from lib_systemd_render.sh. A checkout under a path containing `&`, `\` or `|` rendered a corrupted unit from these two only. Both now source the helper and use it, and a test checks that every placeholder substitution in scripts/install uses an escaped value. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): stop the installer scripts reporting things that are not true - first_time_install.sh printed "Password: ledmatrix123" for the setup access point. wifi_manager creates it as an open network ("No password" on the panel), so it now says so. - Step 10.1 printed "✓ WiFi management permissions configured" straight after its own failure message; install_wifi_monitor.sh printed "✓ Package installation completed" after a failed apt install. The tick now only follows success. - Step 7 printed "Web dependencies already installed ... in Step 5" in the one branch that runs because Step 5 did not install them, then created .web_deps_installed on that basis. It now warns and leaves the marker off so the next run retries, as the comment below it intends. - check_system_compatibility.sh called Debian 12 Bookworm "full compatibility confirmed" while first_time_install.sh refuses anything but Debian 13. Bookworm, older Debian and non-Debian systems are now errors. Its counters used ((X++)), which under `set -e` exits the script at the first warning or error (the expression is 0), so the check never reached its summary on any system with one. - configure_web_sudo.sh and configure_wifi_permissions.sh finished by testing `sudo -n test -f ...` and `sudo -n nmcli device status`, neither of which is granted, so they always reported a failure. They now ask `sudo -n -l` about commands the new rules do grant, which checks the rule without running anything. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * fix(install): print the completion summary before rebooting With -y -- and so for every one-shot `curl | bash` install, which always passes -y -- first_time_install.sh ran `reboot` about 180 lines before its "Installation Complete / Web UI Access" summary. reboot returns at once, so the summary printed while the Pi was going down and the SSH session usually dropped before the web UI address could be read. The reboot block moves, unchanged, to the very end of the script. The interactive prompt now also follows the summary. Because the summary now runs before the -y reboot, its one command that could fail under `set -Eeuo pipefail` (the SSID lookup, when nmcli reports a connected device but no active network line) gets `|| true`; a missing SSID was already handled as "SSID unknown". one-shot-install.sh prints its "Next steps" after the installer returns, by which time the reboot is under way, so it now says so, and README's Quick Install mentions the automatic reboot. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * chore(scripts): correct wrong comments and messages, drop dead code No behaviour change except the output text noted below. - 2775 is setgid, not the sticky bit (first_time_install.sh Step 3.1, fix_plugin_permissions.sh), and root needs no "PWM hardware access" to plugin files. - The 777 comments in first_time_install.sh Step 3's fallback and fix_assets_permissions.sh said root needs it to write. Root ignores mode bits; the comments now say what 777 actually opens. The 777 itself is unchanged. - apt_remove ends in `|| true`, so Step 12's "Some packages could not be removed" branch could never run; it is gone and the helper stays non-fatal. - detect_web_service_user's comment named Step 8 for the web unit (install_service.sh installs it in Step 7.5) and now says which branch actually runs. - Step 5 described an "already installed" check that does not exist; the ACTUAL_USER comment described the re-exec backwards. - on_error printed a literal "\n" before "Common fixes:". - Dead code: one-shot-install.sh's uncalled fix_tmp_permissions, LEDMATRIX_ELEVATED=1 (never read) on the sudo re-exec, and configure_web_sudo.sh's unused PYTHON_PATH, which also made a missing python3 fatal for rules that never mention it. - start_display.sh / stop_display.sh said "for user: <you>"; the service runs as root. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * refactor(fix_perms): fix_cache_permissions.sh uses setup_cache.sh's model There were two models for /var/cache/ledmatrix. setup_cache.sh (the installer's Step 2) and install_web_service.sh share it through the ledmatrix group: root:ledmatrix, 2775, files 660, which is also what DiskCache relies on to give files the directory's group. fix_cache_permissions.sh instead made it 777 and re-grouped it to the invoking user's group, undoing that. It now runs setup_cache.sh for /var/cache/ledmatrix and keeps its own handling of ~/.ledmatrix_cache. Dropped: /var/cache/ledmatrix/ placeholder_logos (nothing reads it) and the checks against the `daemon` user (no service runs as daemon). Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * ci: pin actions/checkout in the Claude workflows, drop template comments claude.yml and claude-code-review.yml used actions/checkout@v4 while test.yml and release-version-check.yml pin the v4.2.2 commit SHA; they now pin the same SHA. The commented-out starter-template settings (prompt, claude_args, paths, author filter) are removed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(scripts): index every script and list removal candidates New scripts/README.md gives one line per top-level script and scripts directory, marked keep, dev-only or diagnostic, and lists the eight scripts nothing in the repo refers to as candidates for removal (kept for now). The install, utils and dev READMEs now list the files they were missing. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * test: tighten two checks that mutation testing showed were too loose - The wifi sudoers check matched `visudo -c -f "$TEMP_SUDOERS"` in the error report too, so replacing the check with `if false` still passed. It now requires the command as the condition. - The summary test never had the setup access point up, so reinstating the bogus "Password: ledmatrix123" line went unnoticed. A case with hostapd active now checks the AP is described as open. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(permissions): describe the repaired fix_perms scripts and new WiFi grants Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> * docs(changelog): docs-scripts Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>	2026-09-24 17:31:41 -04:00
ChuckandClaude Opus 5	59997594ac	test: fix the emulator port collision behind the intermittent suite failures (#562) ... * chore: stop tests and rigs writing to shared paths Two shared-state problems, both of which show up as a permanently dirty checkout or an unreproducible test failure. test_display_dirty_tracking.py builds a real DisplayManager, whose _snapshot_path defaults to the fixed /tmp/led_matrix_preview.png that the web UI reads. Every pytest process on the machine shares that one file, so two concurrent runs -- CI shards, a second worktree, an agent running the suite alongside -- overwrite each other's snapshot and the mtime assertions stop meaning anything. The module fixture now points it at a session-unique temp path; the individual tests that care still override it further. To be clear about what this does and does not fix: this is a real shared-path hazard, but it is NOT the cause of the intermittent 15-test failure in that module. That turned out to be the emulator's fixed TCP port, fixed in the follow-up commit. This change stands on its own merits. web_interface/app.py writes data/plugin_operations.json, data/plugin_state.json and data/operation_history.json as the web interface runs, into a directory that ships tracked (data/.gitkeep) and was otherwise unignored. So every rig that ever opened the web UI -- and every test run that constructs the app -- left three untracked files behind and a permanently dirty `git status`. Only data/.gitkeep is tracked under data/, so the negation keeps it. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * test: stop the emulator binding a fixed port, so concurrent runs can't collide This is the cause of the intermittent full-suite failures we have been chasing: runs of identical code landing anywhere between 100 and 130 failures, while every implicated test passed in isolation. Six test modules set EMULATOR=true and build a real DisplayManager. The repo's emulator_config.json selects the "browser" adapter, which binds TCP port 8888 to serve the dev preview. That port is a machine-wide singleton, so a second pytest process -- a CI shard, another worktree, an agent running the suite alongside -- loses the bind. RGBMatrix construction then raises, DisplayManager catches it and falls back to `self.matrix = None`, and every test that subsequently touches the matrix dies with AttributeError: 'NoneType' object has no attribute 'SwapOnVSync' which names neither a port nor a socket, and points at the wrong file entirely. Because test_display_dirty_tracking's fixture is module-scoped, all 15 of its matrix-touching tests fail together or not at all -- the 15-test swing that made the totals look random. Demonstrated rather than assumed. Holding 0.0.0.0:8888 from a separate process and running test_display_dirty_tracking.py: without this change 15 failed, 6 passed with this change 21 passed The "raw" adapter renders in memory and binds nothing. Only display_adapter is overridden, in a throwaway config written per pytest process; the repo's emulator_config.json is untouched and `run.py -e` still opens the browser preview on 8888. Nothing in the suite referenced the adapter, and the tests wrap SwapOnVSync on the matrix object itself, so they are indifferent to what sits underneath. allow_adapter_fallback is forced off -- falling back would land us on the browser adapter and its fixed port, which is the whole problem. CONFIG_PATH is a bare relative filename resolved against the CWD, so it is set to an absolute path: the previous behaviour depended on where pytest was invoked from, and silently wrote a default config into whatever directory that was. Verified no regressions: full suite on this branch and with origin/main's versions of the touched files, same machine, back to back -- 115 failed / 4347 passed on both sides, zero failures unique to either. That 115 is the pre-existing Windows-environment baseline (POSIX file modes, fcntl, shell scripts, Linux-only binaries); CI on Linux remains authoritative. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * chore: mark the shell entry points executable Eleven scripts shipped as 100644, so `./scripts/install/configure_web_sudo.sh` fails with "Permission denied" and only works if you know to prefix `bash`. That one matters most: the web UI's own error hint, added in #560, tells users to run exactly that path when a system action fails for want of passwordless sudo, and following that instruction verbatim did not work. All eleven carry a shebang and are invoked directly, never sourced. The two sourced libraries -- lib_lowmem.sh and lib_systemd_render.sh -- are deliberately left non-executable, which is what distinguishes a library from an entry point. Mode bits only, no content: 11 files changed, 0 insertions, 0 deletions. Applied with `git update-index --chmod=+x` because this checkout is on Windows, where core.fileMode is off and the working-tree bit is not tracked. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-09-11 15:45:13 -04:00
ChuckandClaude Opus 5	e23f1f45d3	feat(starlark,on-demand): the third-party fixes worth taking, plus a Home Assistant MQTT bridge (#538) ... * feat(starlark,on-demand): the third-party fixes worth taking, plus an MQTT bridge Analysis of ant456/ledmatrix-fixes-repo, a third-party collection of patches and services built while running this project on Starlark apps under MQTT control. Its patches are whole-file copies taken against an older tree, so applying them as written would revert #523's frame pacing, #534's display() bool returns and the GitHub token masking in plugins_manager.js. Three of its claimed fixes are already in main, and its api_v3 Starlark routes are #535's. What follows is the rest -- verified against current code, and reimplemented where the patch's approach did not hold up. **On-demand display.** `pinned` reached the controller from the API, was stored on it and republished in the status payload, but never narrowed the rotation -- a pinned request still cycled every mode its plugin owns. Right for a sports plugin, whose modes are views of one subject; wrong for a plugin whose modes are unrelated, which is every Starlark app. Now honoured, and it survives a restart. Restarting while on-demand was active loaded *only* the on-demand plugin, so normal rotation had nothing to return to for the life of the process -- and a restart mid-session is routine, since that is how an update is applied. The panel came back cycling one plugin's modes with no way out but clearing the cache by hand. Every enabled plugin loads now; on-demand still resumes on its saved mode. Stop requests are exempt from the duplicate guards on purpose, so that a second click stops a mode a race left running -- which means consuming the mailbox is the only thing that ends one. It was never consumed, so the same stop was re-read and re-processed on every poll, forever. Both paths now share one compare-before-delete helper. **Starlark rendering.** `extract_schema` parsed the source with a regex, which can only see option lists written out literally: an app whose dropdown is filled from a live API call inside `get_schema()` came back empty, and the config form offered nothing to pick. Now runs `pixlet schema`, which executes the app, and falls back to the parser when Pixlet is absent, too old for the subcommand, or the app fails to run. The third-party patch replaced the parser outright and hardcoded /usr/local/bin/pixlet; this keeps the fallback and the binary search. A `|` in a config value was dropped by a shell-metacharacter filter, though the command is a list with no shell involved -- and apps do use it as a separator inside one value. The key went missing silently and the app rendered its own "not configured" screen with nothing to say why. And a 0-byte render was reported as success: Pixlet exits 0 and writes nothing when an app has no content, which read downstream as a working app drawing a black panel. **Starlark display.** `display()` ignored the mode it was called with, so a specific app could not be addressed. It now accepts `display_mode` -- which is the whole mechanism, since the controller inspects the signature before passing it. Found while there: `_select_next_app` ran only while `current_app` was unset, so with several apps installed the first was picked once and shown forever while the rest were rendered on schedule and never displayed. And `enable_scrolling` was missing, so multi-frame apps were called once per rotation slot and never advanced past frame one. **GET /api/v3/display/modes.** Every mode that can be requested on-demand, with the plugin that owns it. Nothing exposed this, so anything driving the display from outside the web UI read each plugin's manifest.json off disk and reimplemented PluginManager's fallbacks. It also triggers discovery, which is otherwise lazy and normally happens because a person opened the dashboard. **integrations/mqtt_bridge.** Home Assistant control over MQTT Discovery: a mode select, a stop button, power, brightness. Rewritten against the API rather than the filesystem, so it needs no read access to config.json and cannot drift from the web UI. paho-mqtt 2.x VERSION2, TLS, an availability topic that is also the last will, and secrets from the environment. **Two opt-in extras.** A DNS single-request unit, for glibc's parallel A/AAAA lookup stalling ~5s per name on routers that answer only the A query -- which makes any plugin calling an external API slow and Starlark apps, which have a render timeout, fail outright. And a Pixlet config editor: a script you run and Ctrl+C rather than the third-party version's always-on unauthenticated Flask service, since it stops the display for the length of a session. Neither is installed by default. Long Starlark app names now wrap instead of overflowing their card. 115 new tests across 5 files. Also unblocked test_starlark_display_contract.py, which was silently skipping wherever fcntl is absent. Whole suite: no new failures against main. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix(mqtt_bridge): the five issues Codacy flagged on this branch All in the new bridge, all real: * requests floor was 2.31.0, which carries CVE-2024-35195, CVE-2024-47081 and CVE-2026-25645. Raised to >=2.33.0,<3.0.0, which is what the project's own requirements.txt already pins. * `import time` was never used. * `"mqtt_password": None` in DEFAULTS read as a hardcoded credential. It is the "no password configured" default; marked nosec B105, the convention used elsewhere in the repo. Also dropped an unused `build_app` from the display-modes test imports. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> * fix: the review findings on this PR Nine of CodeRabbit's ten, plus the CodeQL alert. The tenth is wrong and is answered below. **One bad config section blanked the whole mode list.** `/display/modes` read `full_config.get(plugin_id, {}).get('enabled')`, so a non-dict under a plugin id -- a shape DisplayController already guards, so it happens -- raised AttributeError mid-loop and answered 500 with no modes at all. Every MQTT bridge entity is built from that list. Now skipped with a warning. **The DNS scripts reported success they had not earned.** Three separate paths: `resolvconf -u` failing was swallowed by `|| true`; the systemd-resolved branch exited 0 without applying anything, so the oneshot unit recorded success while the workaround was inactive; and the installer's `|| echo` turned a failed start into "installation complete." with exit 0. All three now fail loudly. `single-request` is a glibc resolv.conf option with no resolved.conf equivalent, so on those hosts the honest answer is that it cannot be applied. A NetworkManager-generated resolv.conf is regenerated on connection changes, not only at boot, and the unit is oneshot with RemainAfterExit -- so the option can vanish mid-boot with nothing to put it back. Now detected and stated plainly rather than implied to be permanent. **`Before=` does not order a manual restart.** It only orders units already in the same transaction, so `systemctl restart ledmatrix` could bypass the fix. install_dns_fix.sh now writes a ledmatrix.service drop-in with Wants= and After=. Wants=, not Requires=: a DNS workaround failing should not stop the display. **The Pixlet editor's `--lan` is gone.** `pixlet serve` has no authentication, and a printed warning is not access control. Loopback only, with the SSH port-forward in the header where the flag used to be documented -- SSH does the authenticating and nothing is left listening. **The MQTT example config now defaults to TLS** on 8883. The installer copies it verbatim, and without TLS the broker password and every command cross the network in cleartext. A plaintext broker is still supported and documented, and the bridge warns once at startup when a password is configured without TLS. **Not taken: "the upstream Pixlet CLI has no `schema` subcommand."** Upstream tidbyt/pixlet has none, but `scripts/download_pixlet.sh` installs `tronbyt/pixlet`, whose `cmd/schema.go` is `schema [PATH]` -> JSON on stdout, built on `runtime.NewAppletFromPath`, so it does execute `get_schema()`. That is exactly what extract_schema_via_pixlet calls. A binary without the subcommand exits non-zero and falls back to the source parser, which is already covered by a test. **CodeQL stack-trace exposure: not taken either.** I removed `details` first and that broke test_web_error_detail.py::test_no_api_v3_handler_discards_its_exception, which enforces `describe_exception` across all ~75 handlers -- written because a device with failing storage answered "see logs for details" from the log viewer itself. describe_exception redacts credentials; the trade-off is the project's and is already made. Restored, with the reasoning in a comment. 11 new tests. Whole suite: no new failures against main, 4127 passed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 5 <noreply@anthropic.com>	2026-09-08 08:34:52 -04:00