22 Commits
Author SHA1 Message Date
Thomas Vincent 9582b71704 fix(runtime): [develop] retain reviewed probe and compiler stages after result normalization (#660)
The runtime/probe changes from #642 and GNU C17/build changes from #643
were squash-merged into #641's source branch, which made the
result-normalization review include later stages. This follow-up
preserves those approved changes while restoring #641's focused diff
against develop. No force-push or approved-code deletion is required.

Merge after #641 and before #644. #644 will target this branch. This
combines the already reviewed steps 5 and 6; it introduces no new
worker-stack or module-extraction changes.

The UDP follow-up also corrects a validated finding: EHOSTUNREACH on a
connected socket is ambiguous and can represent an unreachable host or
failed neighbour lookup. It now reports down; ECONNREFUSED/ECONNRESET
and actual peer datagrams retain their existing alive behavior. The
production-linked test rejects the original EHOSTUNREACH behavior.

Validation: Ubuntu 24.04/aarch64, clean GCC build and make check: 17
passed, one existing setuid prerequisite skip, zero failures. The full
tracked source tree is byte-identical to the independently validated
#641 functional-fix snapshot. The UDP and poll-host regressions fail
against the original code and pass after the fixes. The isolated step-4
tree independently passes 15 tests with one existing skip. No live
endpoints, host installation, privilege changes, or test suppression.

Repository squash merges still require restacking/retargeting the next
child after each merge; clean ordinary merge simulations are
insufficient by themselves.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-19 14:17:35 -04:00
Thomas Vincent 9be5f8ad2e fix(results): [develop] normalize output and unify SNMP batch persistence (#641)
Classify numeric, undefined, multipart and Cacti octet results through
one parser, normalize undefined agent values before persistence and
flush every SNMP batch consistently. Validate whole non-negative
uptimes, retain unknown reindex baselines and free script results
through their owning pointer. The mocked poll_host suite checks
session-profile boundaries, spike handling, output_regex input and
completion writes.

Originally step 4/14 of the C17/native-correctness series; its preceding
steps have merged. The current base is develop.

Earlier validation, before this review follow-up, in isolated copied
snapshots on Linux arm64:

- Clean GCC build and make check: 15 passed, 1 existing prerequisite
skips, 0 failures.
- ASan/UBSan: 14 passed, 2 existing privilege/allocator-interposition
prerequisite skips, 0 failures; no sanitizer findings.
- Production source/profile integrity verification against disposable
MariaDB and loopback SNMP fixtures passed.
- Release archive extracted into a separate source tree and built/tested
out of tree; fuzz checks passed.

Earlier local profiles retain source hashes for the copied validation
tree; GitHub checks validate the published commit. No production
database/device, host installation or live privilege change is part of
validation. Existing prerequisite skips were retained; no test or
finding was suppressed to obtain a pass.



Review follow-up (2026-10-09): Restacked on the corrected preceding
branches. The SNMP status fix is introduced in #638, the
reindex/completion fixes in #640, and focused regression coverage in
#650.

Restacked tip validation: isolated Linux arm64 build and make check
passed (18 passed, 1 setuid prerequisite skip, no failures).
GitHub checks validate the updated published commits; earlier
profile/archive/sanitizer evidence above belongs to the previous
revisions.

## Current merge dependencies

Current base: `develop`. Immediate dependency: `develop` (earlier steps
already merged). Next open PR:
[#644](https://github.com/Cacti/spine/pull/644).

Merge order: #641 → #644 → #654 → #646 → #648 → #649 → #650 → #651 →
#655 → #658 → #659.

This repository uses squash-only merges and deletes merged branches.
Record the old parent SHA, squash one PR at a time, then restack and
retarget dependents before merging the next PR. Re-run merge validation
and checks on the resulting heads; an ordinary clean merge does not
replace squash/restack validation.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-12 18:39:39 -04:00
Thomas Vincent 898d8c692c fix(privileges): drop root before input and retain owned ICMP sockets (#639)
Open and own the required ICMP sockets before permanently dropping
setuid root, then parse input without elevated identity. Close-on-exec
socket ownership, shared IPv4/IPv6 dispatch and fault-injected
identity/capability calls are covered. The owned fixture tests check
deny/allow behavior without contacting external devices.

Step 2/14 of the complete C17/native-correctness series. Base: the
preceding series branch; merge/review in order so this PR shows only its
own step.

Earlier validation, before this review follow-up, in isolated copied
snapshots on Linux arm64:

- Clean GCC build and make check: 13 passed, 1 existing prerequisite
skips, 0 failures.
- ASan/UBSan: 12 passed, 2 existing privilege/allocator-interposition
prerequisite skips, 0 failures; no sanitizer findings.
- Production source/profile integrity verification against disposable
MariaDB and loopback SNMP fixtures passed.
- Release archive extracted into a separate source tree and built/tested
out of tree; fuzz checks passed.

Earlier local profiles retain source hashes for the copied validation
tree; GitHub checks validate the published commit. No production
database/device, host installation or live privilege change is part of
validation. Existing prerequisite skips were retained; no test or
finding was suppressed to obtain a pass.


Series navigation: [Series
index](https://github.com/Cacti/spine/pull/638); [previous
step](https://github.com/Cacti/spine/pull/638). [Next
step](https://github.com/Cacti/spine/pull/640).

Review follow-up (2026-10-09): Restacked on the corrected preceding
branches. The SNMP status fix is introduced in #638, the
reindex/completion fixes in #640, and focused regression coverage in
#650.

Restacked tip validation: isolated Linux arm64 build and make check
passed (18 passed, 1 setuid prerequisite skip, no failures).
GitHub checks validate the updated published commits; earlier
profile/archive/sanitizer evidence above belongs to the previous
revisions.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-10 21:08:52 -04:00
Thomas Vincent 3065c6fc23 refactor(core): add bounded native interfaces and polling contracts (#638)
Introduce bounded native interfaces and grouped runtime state, then link
regression and fault contracts against the real poller implementations.
The contracts capture CLI/configuration input, availability
combinations, SNMP request/response ownership, script framing,
reindexing, output persistence, worker completion and shutdown. This
foundational change is larger because the shared interfaces and their
existing production contracts must move together; later changes have
separate review boundaries.

Step 1/14 of the complete C17/native-correctness series. Base: develop.

Earlier validation, before this review follow-up, in isolated copied
snapshots on Linux arm64:

- Clean GCC build and make check: 13 passed, 0 existing prerequisite
skips, 0 failures.
- ASan/UBSan: 12 passed, 1 existing privilege/allocator-interposition
prerequisite skips, 0 failures; no sanitizer findings.
- Production source/profile integrity verification against disposable
MariaDB and loopback SNMP fixtures passed.
- Release archive extracted into a separate source tree and built/tested
out of tree; fuzz checks passed.

Earlier local profiles retain source hashes for the copied validation
tree; GitHub checks validate the published commit. No production
database/device, host installation or live privilege change is part of
validation. Existing prerequisite skips were retained; no test or
finding was suppressed to obtain a pass.


The worker contracts publish owned heap state and release it only after
joining workers and restoring the runtime table. Coverage counters use
atomic updates; cppcheck receives an explicit model of the fatal exit
contract. Fixture images use public mirrors to avoid shared Docker Hub
pull limits.


Series navigation: review and merge in order. Every PR targets the
preceding branch so its diff contains one step.

1. [refactor(core): add bounded native interfaces and polling
contracts](https://github.com/Cacti/spine/pull/638)
2. [fix(privileges): drop root before input and retain owned ICMP
sockets](https://github.com/Cacti/spine/pull/639)
3. [fix(poller): isolate worker failures and bound database
reconnects](https://github.com/Cacti/spine/pull/640)
4. [fix(results): normalize output and unify SNMP batch
persistence](https://github.com/Cacti/spine/pull/641)
5. [fix(runtime): bound probe retries and validate CLI and
configuration](https://github.com/Cacti/spine/pull/642)
6. [build: select GNU C17 explicitly and probe hardening
support](https://github.com/Cacti/spine/pull/643)
7. [fix(threads): size worker stacks and guard size
arithmetic](https://github.com/Cacti/spine/pull/644)
8. [refactor(c17): simplify ownership guards and share test
support](https://github.com/Cacti/spine/pull/645)
9. [refactor(core): extract configuration polling and runtime
modules](https://github.com/Cacti/spine/pull/646)
10. [fix(boundaries): validate script slots and make cleanup
portable](https://github.com/Cacti/spine/pull/647)
11. [refactor(layout): organize responsibilities and separate main from
runtime](https://github.com/Cacti/spine/pull/648)
12. [docs(license): adopt SPDX notices and retain contributor
credits](https://github.com/Cacti/spine/pull/649)
13. [test(runtime): measure all suites and cover protocol
boundaries](https://github.com/Cacti/spine/pull/650)
14. [build(ci): validate connectors time width and native C17
modules](https://github.com/Cacti/spine/pull/651)

Review follow-up (2026-10-09): Publish the decoded GET/GETNEXT status
back to the host so availability checks observe exception and
missing-response failures, while preserving the legacy transport-success
behavior for agent PDU errors.

Updated step 1 snapshot: isolated Linux arm64 build and make check
passed (13 passed, no skips or failures).
The restacked tip passes all five clang-tidy gate regression tests and
real clang-tidy analysis (26 reviewed baseline findings, no new
findings). Actionlint and matching DCO trailers pass. The setuid test
also passes when run in the separate disposable root container.
GitHub checks validate the updated published commits; earlier
profile/archive/sanitizer evidence above belongs to the previous
revisions.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-10 20:03:21 -04:00
Thomas Vincent dd73131f58 fix(php): validate reader process slots before accessing state (#637)
`php_readpipe()` can access `php_processes[php_process]` without the
slot validation in `php_cmd()`. Validate the process table and both
configured and fixed array bounds before the reader inspects descriptors
or initiates recovery. Invalid inputs return an owned `"U"` result
through the existing allocation/error contract.

The regression exercises the public reader and startup reader with a
missing process table, negative slot, configured limit, array limit,
`INT_MAX`, zero/negative configured counts and a count larger than the
array. It asserts `"U"`, frees each result and verifies no spawning or
protocol writes. Existing real-child round-trip and shutdown tests
remain in the suite.

Validation against develop `ca662c1b` in isolated Linux containers:

- Upstream pull-request CI: all 19 checks passed, including builds,
integration, coverage, sanitizers, fuzzing and release-archive checks.
- Clean Autotools build and `make check`: 11 passed, no skips or
failures.
- ASan/UBSan: 10 passed; the existing allocator-interposition suite is
incompatible with sanitizer interposition and skips as designed. No
sanitizer findings.
- Measured gcov coverage exercises both outcomes of all four added guard
conditions, including 32 invalid-input returns.
- Removing the guard fails the new regression; restoring it passes.

This is a focused, DCO-signed change to `php.c` and its existing unit
suite. Valid script protocol behavior and child cleanup are preserved.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-10 20:02:30 -04:00
Thomas Vincent d1cc471967 fix(ping): match ICMPv6 peers by address octets (#636)
IPv6 replies are matched by comparing `struct in6_addr` as a whole.
Compare its 16 `s6_addr` bytes explicitly so peer identity does not
depend on the structure representation.

The regression tests exercise both datagram and raw ICMPv6 receive
paths: each rejects 16 replies with a different wrong address octet
before accepting the matching peer. They check the existing response
text, receive count and descriptor cleanup.

Validation against develop `ca662c1b` in isolated Linux containers:

- Upstream pull-request CI: all 19 checks passed, including builds,
integration, coverage, sanitizers, fuzzing and release-archive checks.
- Clean Autotools build and `make check`: 11 passed, no skips or
failures.
- ASan/UBSan: 10 passed; the existing allocator-interposition suite is
incompatible with sanitizer interposition and skips as designed. No
sanitizer findings.
- Measured gcov coverage of the changed comparison: 34 executions, both
outcomes covered (32 rejected / 2 matching).
- A mutation comparing only 15 address bytes fails both new tests;
restoring the full comparison passes.

This is a focused, DCO-signed change to `ping.c` and its existing unit
suite. Polling retries, output and privileges are preserved.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-10-10 20:01:47 -04:00
TheWitness ca662c1be7 fix: cap Solaris reap budget, bound EINTR retries, kill before parking on waitpid error (#635)
## What
Follow-up to #633 (already merged), from the code review findings on the
equivalent 1.2.x change (#634):

- **SOLAR_THREAD sleep budget**: `spine_reap_child_bounded()` has no
`usleep()`-paced spin phase on `SOLAR_THREAD` builds - it sleeps a flat
1s per attempt. #633 raised the shared attempt budget
(`NFT_PCLOSE_SPIN_ATTEMPTS`) to 100 for `nft_pclose()`'s brief
allowance, which made it sleep up to **~100 seconds** on that platform
instead of the intended ~20ms, reintroducing the exact poller stall #633
was fixing. `NFT_PCLOSE_SPIN_ATTEMPTS` is now platform-specific (100
elsewhere, 2 under `SOLAR_THREAD`).
- **Unbounded EINTR retries**: bounded the `EINTR` retry loop in
`spine_reap_child_bounded()` and in `nft_sweep_abandoned()` (which runs
with `ListMutex` held), so a stream of caught signals can no longer spin
either indefinitely.
- **Kill before park on waitpid() error**: `nft_pclose()` now SIGKILLs
the child before parking it when `waitpid()` itself errors (previously
only done when the child was confirmed still running), so a
still-running child isn't left outside the abandoned-pid sweep's reach.
Preserves `waitpid()`'s errno across the call.
- **Docs**: `nft_popen.h`'s `nft_pclose()` comment still described the
old blocking-wait behavior and didn't mention `ETIMEDOUT` - #633 updated
`nft_popen.c`'s comment but missed the header. Both now document the
bounded-check/parked-child contract.

## Why
These were flagged by review of #634 (the same fix ported to 1.2.x,
where the affected code showed up as new rather than a diff against
pre-existing lines). Fixing here too since develop has the identical
code.

## What was tested
- `./bootstrap && ./configure --enable-warnings && make` - clean build,
no new warnings.
- `make check` - all 11 suites pass.
- `cppcheck --enable=all --std=c11` on `nft_popen.c` - no new errors.

Closes #632.

---------

Signed-off-by: TheWitness <thewitness@cacti.net>
2026-09-28 15:21:22 -04:00
TheWitness 08e2ae0b42 fix: reap script/PHP children without blocking the poller, drop USING_TPOPEN (#633)
## What
- `nft_pclose()` (`nft_popen.c`) and `php_terminate_and_reap()`
(`php.c`) no longer escalate through a spin/sleep/SIGTERM/SIGKILL
sequence. Each now does one bounded, non-blocking check (~20ms allowance
for normal fork/exec/exit scheduling latency), kills anything still
running, and hands it to the existing abandoned-pid sweep instead of
waiting on it in the calling (polling) thread.
- Removed the `USING_TPOPEN`/`--enable-popen` native-`popen()` fallback
in `exec_poll()` (`poller.c`, `configure.ac`). It could not track or
kill a timed-out child (no pid available from a real `popen()`), so a
timeout there could only ever abandon the descriptor without terminating
the process.
- Extended `tests/regression/test_child_process_safety.sh` with
structural guards against reintroducing the blocking spin/sleep
escalation in either function.
- Updated `tests/unit/test_linked.c`'s `nft_pclose()` coverage for the
new, faster contract (the old test asserted a graceful-SIGTERM-then-wait
exit code that the new design intentionally no longer provides).

## Why
Investigating a reported poller slowdown surfaced that `nft_pclose()`
(added by #614) could block a poller thread for up to ~5 seconds per
script whose process hadn't exited by the time its pipe was closed, and
`php_terminate_and_reap()` had the same shape (up to ~2s), reachable
mid-poll-cycle via `php_fail_read()`, not just at shutdown. Separately,
the `USING_TPOPEN` fallback's inability to kill a timed-out child was
flagged as out of scope in #574. Tracked in #632; design principles
written up in #630.

## What was tested
- `./bootstrap && ./configure --enable-warnings && make -j` — clean
build, no new warnings.
- `make check` — all 11 suites pass (unit, regression, integration),
including the extended `test_child_process_safety.sh` guard and the
updated `test_linked` case.
- `cppcheck --enable=all --std=c11` on the three changed `.c` files — no
new errors (pre-existing style-only notes unrelated to this change).

Signed-off-by: TheWitness <thewitness@cacti.net>
2026-09-24 09:39:22 -05:00
86a062dd09 ci: enforce cross-platform quality gates and connector coverage (#618)
## Summary

Consolidates the connector/build work from #613 and the broader
test-infrastructure work extracted from #597 into one review:

- discover MariaDB Connector/C first while retaining MySQL and
Percona-compatible support
- test MariaDB and MySQL Connector/C with strict GCC and Clang builds on
Ubuntu 24.04
- add a real macOS 15 build and unit-test lane with portable Autotools
platform detection
- run unit tests under ASan/UBSan and ThreadSanitizer
- enforce the measured 7% global coverage baseline and 70% changed-line
coverage
- add libFuzzer coverage for output parsing alongside the existing
hostname parser
- exercise the SNMPv3 integration suite against MariaDB and MySQL 8.4
- add cppcheck, shellcheck, DCO verification, CODEOWNERS, distcheck, and
Linux-capability checks while retaining the repository-managed default
CodeQL setup
- expose a stable `CI / required` aggregate check for branch protection
- pin runners and third-party actions and keep workflow permissions
read-only by default

## Correctness fixes found by the new gates

- reject truncated capability strings and poller-output SQL tuples
instead of publishing partial data
- make `bootstrap` fail closed and select `libtoolize`/`glibtoolize`
portably
- use Autoconf's canonical host for Darwin detection instead of an empty
native-build alias
- remove stale initialization/name-shadow findings and make read-only
interfaces const-correct
- make the ICMP parser test portable across Linux and BSD header names

## Verification

- strict GCC and Clang builds: 4/4 unit targets passed
- ASan/UBSan: 4/4 passed
- ThreadSanitizer: 4/4 passed
- macOS Clang/Homebrew build: 4/4 passed
- MariaDB integration: passed
- MySQL 8.4 integration: passed
- both libFuzzer targets: passed sustained local runs
- coverage: 7.2% global and 84% on changed lines
- cppcheck, shellcheck, actionlint, DCO verification, and `git diff
--check`: passed locally

## Post-merge repository settings

After these workflows exist on `develop`, an administrator should
require `CI / required`, Fuzz, Integration, Rocky Linux, and the
repository-managed CodeQL/code-scanning result in the active ruleset;
enable code-owner approval; and require the branch to be current (or use
a merge queue). Enabling those settings before this PR merges would
create required checks that the base branch cannot yet emit.

Consolidates and supersedes #613. Closes #612.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Signed-off-by: TheWitness <thewitness@cacti.net>
Signed-off-by: TheWitness <copilot@users.noreply.github.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
Co-authored-by: TheWitness <copilot@users.noreply.github.com>
2026-09-24 05:52:56 -04:00
dbbccc5263 fix: extract core safety fixes from #597 (#621)
Extracted from #597 into a focused core correctness and memory-safety
change.

This checks startup allocations, bounds full log lines and query
construction, frees settings result sets on NULL-row paths, caches the
configured timestamp format, replaces advancing snprintf cursors with a
bounded append contract, fixes remote batch boundary loss, and converts
delimited hexadecimal OctetStrings without overflow. poller_output and
remote status pushes use the cross-vendor VALUES() form until #590
supplies an independently detected main-server capability.

Behavior worth calling out:
- colon/dash-delimited hexadecimal values that were previously stored as
zero now convert correctly
- values wider than 64 bits become U and count as collection errors
instead of producing undefined numeric conversion
- remote batches flush before the boundary-triggering row and refuse
truncated statements

Verification on macOS arm64:
- warning-enabled C99 configure/build
- forced make -B check on the final tree: 6 pass, 1 expected skip
- the skipped allocation-failure integration uses Linux LD_PRELOAD and
runs in Linux CI
- full VPATH make distcheck passed earlier in this branch
- mandatory independent pre-push review: PASS

Closes #564
Closes #565
Closes #566
Closes #567
Closes #588
Refs #590
Refs #597

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Signed-off-by: TheWitness <copilot@users.noreply.github.com>
Co-authored-by: TheWitness <copilot@users.noreply.github.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
2026-09-23 10:19:42 -04:00
72b8904985 fix: restore safe SNMPv3 session construction (#620)
Extracted from #597 into a focused SNMPv3 correctness and safety change.

This restores noAuthNoPriv and authNoPriv session construction, derives
authentication keys on the authNoPriv path, validates configured
algorithms when they are used, wipes temporary passphrase copies, and
makes the effective security-level decision agree with Cacti. It also
prevents a failed mid-loop session rebuild from passing NULL into
Net-SNMP multi-get.

Compatibility and failure policy:
- [None] is the explicit no-protocol sentinel; stale passphrases paired
with it downgrade with a warning to the Cacti effective level.
- A selected protocol missing its passphrase downgrades with an explicit
warning, preserving existing polling behavior.
- A blank protocol field paired with a passphrase is ambiguous and now
fails closed with an error.
- Complete privacy credentials without usable authentication fail closed
because USM cannot honor privacy without authentication.
- Unknown authentication algorithms fail closed instead of silently
substituting a default; unused privacy algorithms do not block
authNoPriv.

Verification:
- warning-enabled C99 build on macOS arm64
- make check: all 5 suites passed
- deterministic SNMPv3 session suite: 22/22 pass, including literal OID
mapping, effective-level combinations, refusal paths, key derivation,
caller-buffer ownership, and NULL multi-get handling
- mandatory independent pre-push review: PASS

Closes #582
Refs #597

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Signed-off-by: TheWitness <copilot@users.noreply.github.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
Co-authored-by: TheWitness <copilot@users.noreply.github.com>
2026-09-23 10:10:57 -04:00
478d330985 fix(ping): make IPv4 and IPv6 ICMP polling safe (#619)
## Summary

Consolidates the overlapping ICMP work from #555 and #619 into one
review of the complete socket and resolver state machine.

- add ICMPv6 echo polling and dispatch IPv6 devices to it
- prefer unprivileged datagram ICMP sockets when the kernel permits them
- retain bounded raw-socket fallback for IPv4 and IPv6
- give packet and socket resources one cleanup owner
- leave caller-owned resolver state untouched on lookup failure
- keep every retry inside one cached capability and privilege-transition
decision
- prevent LOCK_SETEUID retry deadlocks
- validate raw and datagram reply layouts, source, sequence,
identifiers, and payload
- retain fuzz and unprivileged-socket integration coverage

The consolidation also fixed an integration defect found locally: the
controlled successful-reply test constructed only a raw IPv4 packet even
when the production path selected SOCK_DGRAM. It now models the selected
socket format, and IPv6 raw retries use the same privilege-safety
invariant as IPv4.

## Verification

- warning-enabled local build completed with MariaDB Connector/C,
Net-SNMP, OpenSSL 3, and cmocka
- make check: 5/5 test binaries passed
- focused ping_icmp suite: 9/9 cases passed
- actionlint and git diff --check passed
- all commits are signed
- GitHub CI is authoritative for Linux capability, sanitizer, fuzz, and
unprivileged-network coverage

Closes #127.
Closes #250.
Closes #593.
Closes #611.
Supersedes #555.
Refs #597 and #618.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Signed-off-by: TheWitness <copilot@users.noreply.github.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
Co-authored-by: TheWitness <copilot@users.noreply.github.com>
2026-09-23 09:34:15 -04:00
Thomas VincentandTheWitness 90da94b94f fix(process): unify subprocess ownership and child lifecycle safety (#614)
## Summary

- make subprocess-registry detach atomic so exactly one closer owns each
entry
- make cancellation cleanup release only the detached node it owns
- replace `vfork`/`execve` child setup with `posix_spawn` and explicit
file actions
- mark every pipe and stdio-collision duplicate close-on-exec
- restore the child's default SIGPIPE disposition while preserving the
parent's handling
- bound TERM/KILL reaping and park unreaped children in a fixed-capacity
sweep list
- harden PHP script-server slot ownership, startup, restart, signal,
descriptor, and cleanup paths
- retire and restart failed or oversized reads so stale response tails
cannot poison later data sources
- revalidate every command retry and cap recovery handshakes at two
seconds

This folds the child-process lifecycle portion of #597 into the narrower
ownership PR. It does not absorb unrelated poll-host, SQL, SNMP, ICMP,
or build-infrastructure work.

## Review-driven corrections

- close-on-exec is explicitly restored after `dup()` in both read and
write stdio-collision branches
- the source invariant check now uses portable POSIX character classes
- direct tests cover duplicate flags, both collision branches, failure
after pipe creation, abandoned-child sweeping, and capacity overflow
- collision cleanup preserves current-child redirects even when an older
registry entry occupies fd 0 or 1
- script children receive SIGTERM before SIGKILL and unreaped PHP
children transfer to the bounded sweep registry
- the Docker integration suite now starts a real PHP script server,
verifies its startup protocol and database result, and checks that
shutdown leaves no zombie PHP process

## Validation

- Ubuntu 24.04 container with GCC and GNU ld: `make check`, 6/6 targets
passed with no skips, including `test_php_runtime`
- real PHP script-server Docker integration: 6/6 checks passed; exact
value `42` reached `poller_output` and no zombie remained
- macOS Homebrew dependency build passed
- macOS `make check`: 5/5 available binaries passed; GNU `--wrap`
runtime suite is Linux-only
- PHP fixture syntax checked through mise PHP 8.3
- actionlint, shellcheck, and `git diff --check` passed

Closes #610.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
2026-09-22 17:24:04 -04:00
Thomas VincentandTheWitness f989722458 build: establish src/core layout for support modules (#617)
## What

- move `keywords.c`/`.h` and `locks.c`/`.h` into `src/core/`
- enable Automake `subdir-objects` for collision-safe nested object
placement
- update the Autotools binary, linked-test, standalone unit-test, and
fuzz paths
- make both cppcheck entry points share one complete nested-source
discovery path
- ignore nested Automake and Docker build artifacts
- retain existing header include names and the Autotools build

The four production source/header files are 100% renames with no content
changes. The remaining changes are build and verification plumbing
required by the new paths.

## Why

Spine production sources currently live in the repository root. This
starts the domain layout in a small, reviewable batch instead of
repeating #523, where the source move was coupled to an 11k-line
CMake/platform rewrite. `keywords` and `locks` were selected because
active PRs #597 and #614 do not modify their implementation files; only
shared build manifests overlap #597.

`subdir-objects` is enabled in this first production move so future
modules with the same basename cannot write the same top-level object
under parallel builds.

Closes #616.

## Verification

- `./bootstrap` with no subdirectory-source warnings
- `./configure --with-mysql=$(brew --prefix mariadb-connector-c)
--with-snmp=$(brew --prefix net-snmp) CPPFLAGS=-I$(brew --prefix
openssl@3)/include LDFLAGS=-L$(brew --prefix openssl@3)/lib`
- warning-enabled `make -j$(sysctl -n hw.ncpu)`; project sources
compile, with Homebrew Net-SNMP header warnings only
- `make check` (cmocka unavailable to Autoconf locally; 0 local tests)
- `make distcheck`; archive verified to contain all four `src/core`
files
- cppcheck source discovery verified under macOS Bash 3 and includes all
four relocated files
- standalone `tests/unit/Makefile` compiles through header resolution
with `-I../../src/core` (the local macOS link retains unrelated existing
client-library/toolchain issues)
- GitHub checks pass, including fuzz, sanitizers, coverage, `distcheck`,
gcc/clang, SNMPv3, and Rocky Linux

The local macOS fuzz build reaches both relocated files, then fails
identically on untouched `util.c` (`INT_MAX`) and Net-SNMP API
declarations on both this branch and `develop`. Linux fuzz CI is the
authoritative fuzz-build result.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
2026-09-22 11:07:10 -04:00
Thomas Vincent 8208fcb593 test: link the shipped objects instead of copies of the logic (#577)
The three unit binaries in `tests/unit/` do not test the code that
ships. `test_safety_fixes.c` says so in its own header:

> the functions under test are inlined (or their exact predicate
replicated) so this translation unit compiles standalone without linking
util.o/ping.o/php.o and dragging in MySQL/SNMP

That keeps them cheap, but a fix can land in `util.c` while the test
carries on passing against its private copy. The 39 assertions currently
guarantee less than they appear to.

This adds a fourth binary that links the real translation units.
`tests/fuzz/stubs.c` already solves the hard part for the fuzz targets
by supplying the globals `spine.c` would define, so the same file is
reused here. Everything except `spine.c` is linked as built.

**Demonstration.** Reverting `strncopy()` to the issue#447 off-by-one
and running the suite:

```
PASS: tests/unit/test_util_strings
PASS: tests/unit/test_build_fixes
PASS: tests/unit/test_safety_fixes
FAIL: tests/unit/test_linked
# TOTAL: 4   # PASS: 3   # FAIL: 1
```

The three existing suites do not notice. Only the linked one does.

Seven cases to start, covering `strncopy()` bounds and termination and
`regex_replace()` match/no-match/bad-pattern. The point of the PR is the
harness rather than the case count: with this in place, future tests can
assert against real behaviour, and the existing binaries can migrate
over one at a time.

Verified in a clean `ubuntu:24.04` container: builds at 4 warnings
matching develop, `make check` passes 4/4, `make distcheck` passes.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-08-31 17:50:51 -07:00
Thomas Vincent d63e136b89 test: add the unit, fuzz and integration suites (#563)
Split out of #542. Tests and CI only, no source file is touched, so this
cannot conflict with anything currently open.

Verified in a clean `ubuntu:24.04` container against develop as it
stands.

**Unit** — 39 cmocka assertions across three binaries, run with `make -C
tests/unit`:

```
tests: 16 test(s) run.  PASSED
tests: 20 test(s) run.  PASSED
tests: 3 test(s) run.   PASSED
```

`test_safety_fixes.c` covers the allocation, bounds and reap paths;
`test_build_fixes.c` covers `regex_replace` and the config defaults;
`test_util_strings.c` covers `strpos`.

**Fuzz** — a `get_namebyhost` target with a 26-input corpus, built with
`-fsanitize=fuzzer,address,undefined`:

```
#2000	DONE   cov: 64 ft: 85 corp: 11/48b
```

**Integration** — the SNMPv3 fixture polls a live `snmpd` container and
asserts on the rows spine wrote to `poller_output` rather than on its
exit code, plus scripted checks for CLI argument handling, the script
server reap, and `output_regex` column detection.

**Not included.** The `fuzz_icmp_reply` target stays on #542, because it
calls `spine_icmp_classify_reply()`, which that PR adds. Everything else
stands on its own here.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-08-31 10:05:34 +01:00
Thomas Vincent 0c481bc526 port: memory-safety fixes from Spine #544 to develop (#557)
Fresh develop-based port of applicable memory-safety, process-cleanup,
SNMP, poller, and PHP transport fixes from #544. Obsolete release and CI
history was excluded.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-08-31 09:29:59 +01:00
Thomas Vincent 70459ac82c fix(build): resolve compilation failures on develop (#514)
## Summary

Fixes #515. Spine on `develop` fails to compile after recent feature
branch merges (everything after `4837ddd`). This PR fixes 6
build/runtime bugs, replaces deprecated `vfork`, and adds 68 automated
tests.

## Fixes

### Build-breaking (prevented compilation)
1. **Missing uthash.h** - vendored v2.3.0 (header-only, BSD license).
The O(1) hash table feature added `#include "uthash.h"` but never
committed the file.
2. **Extra closing braces in poller.c** - duplicate `}` in
POLLER_ACTION_SCRIPT and POLLER_ACTION_PHP_SCRIPT_SERVER cases broke the
switch statement.

### Runtime bugs
3. **SNMP_FREE macro collision** - spine's `SNMP_FREE` (calls
`snmp_host_cleanup`) collided with net-snmp's `SNMP_FREE` (calls
`free`). Renamed to `SNMP_SESSION_FREE`. The `errstr` from
`snmp_sess_error()` now correctly uses net-snmp's `free()` instead of
`snmp_host_cleanup()`.
4. **output_regex column detection** - the output_regex feature (#210)
assumed the column exists, but baseline Cacti does not have it. Added
`db_column_exists()` check at startup to conditionally include it in
queries.

### Deprecation warnings
5. **vfork in nft_popen.c** - replaced with `posix_spawn` using file
actions, matching the approach already used in `php.c`. Eliminates macOS
deprecation warning.

### Test fixture
6. **snmp_auth_protocol column width** - `char(6)` too narrow for
`SHA-256` (7 chars). Fixed to `char(7)` in both host and poller_item
tables. Added `rocommunity public` to snmpd.conf for SNMPv2c test
coverage.

## Test Results (68/68 pass)

| Suite | Count | Coverage |
|-------|-------|----------|
| Unit (cmocka) | 16 | uthash macros, config init, regex_replace,
strncopy |
| Smoke | 21 | SNMPv3 + SNMPv2c polling, DB writes, multi-device,
runtime validation |
| Output regex | 15 | Column absent, present, regex filtering, removal
fallback |
| DB column detect | 16 | 3 scenarios: absent, added via ALTER TABLE,
dropped |

## Files changed (15)

| File | Change |
|------|--------|
| `uthash.h` | New: vendored header |
| `Makefile.am` | Add uthash.h to EXTRA_DIST |
| `common.h` | Add uthash.h include |
| `poller.c` | Fix braces, conditional output_regex in queries |
| `spine.c` | Add has_output_regex detection at startup |
| `spine.h` | Add has_output_regex to config struct |
| `snmp.h` | Add SNMP_SESSION_FREE macro |
| `sql.c` | Fix indentation in db_query(), restore missing continue |
| `nft_popen.c` | Replace vfork+execve with posix_spawn |
| `tests/snmpv3/db/init.sql` | Fix snmp_auth_protocol char(7) |
| `tests/snmpv3/snmpd/snmpd.conf` | Add rocommunity public |
| `tests/integration/smoke_test.sh` | New: e2e smoke test |
| `tests/integration/test_output_regex.sh` | New: output_regex scenarios
|
| `tests/integration/test_db_column_detect.sh` | New: db_column_exists
scenarios |
| `tests/unit/test_build_fixes.c` + `Makefile` | New: cmocka unit tests
|

## Follow-up PRs

- #517: Replace deprecated POSIX semaphores with pthread wrapper (9
remaining warnings)
- SNMP error handling, spike kill, script server path testing

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-03-25 20:32:40 -04:00
Thomas Vincent 0dd91c4602 chore(warnings): mechanical low-risk cleanup pass #499 (#513)
Fixes compiler warnings across spine source files: adds missing void in
function prototypes, marks internal functions static, removes unused
variables, and fixes const-correctness on function signatures.

**Note:** This PR also includes the following non-mechanical changes
that should be reviewed carefully:

- sql.c: db_column_exists now passes through the caller's type argument
instead of hardcoding LOCAL (bug fix, changes runtime behavior for
REMOTE callers)
- poller.c: Removed write-only snmp_poller_items counter and its
increment block (dead-code elimination)
- util.c: getglobalvariable now returns a strdup'd copy instead of a
pointer into opttable (fixes latent use-after-free on free())
- ping.c: Fixed strncopy(stack, hostname, strlen(stack)) to
strlen(hostname) (old code was a no-op after memset)
- util.c: Changed getsetting/getpsetting/getglobalvariable return type
from const char * to char * to reflect caller ownership semantics

### Addressed performance and DRY issues:
- Addresses #501 (Exponential Backoff)
- Addresses #503 (Centralized Logging)
- Addresses #504 (SNMP_FREE Macro)
- Addresses #505 (O(1) Hash Table)

### Test plan
- [ ] Verify spine compiles with both gcc and clang
- [ ] Run spine against a test Cacti instance and verify polling works

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
2026-03-25 14:09:50 -04:00
Thomas VincentandnetniV e37cecf21f fix(poller): add NULL check after malloc in host_errors insert path (#431)
Fixes #426

`malloc()` at `poller.c:1941` had no NULL check. On failure the
subsequent
`snprintf(NULL, ...)` is undefined behavior and segfaults, killing the
spine
process and leaving all polled hosts without output for that cycle.

Add `die()` on NULL to match every other `malloc` call in the codebase.

Also adds a Docker-based SNMPv3 regression fixture under `tests/snmpv3/`
covering the NULL-check path, ICMP retry behavior, and `snmp_count`
validation.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Co-authored-by: netniV <netniv@hotmail.com>
2026-03-11 20:27:17 +00:00
Thomas VincentandnetniV 31848b522d fix(poller): correct inverted spike_kill condition for PHP script server (#429)
Fixes #424

`POLLER_ACTION_PHP_SCRIPT_SERVER` at `poller.c:1678` used `IS_UNDEFINED`
where it should use `!IS_UNDEFINED`. The guard was true only when the
result
was already `"U"`, making `SET_UNDEFINED` a no-op. PHP script server
data
sources were never spike-killed after agent restarts, producing spurious
spikes in graphs.

Change `IS_UNDEFINED` to `!IS_UNDEFINED` to match the adjacent
`POLLER_ACTION_SCRIPT` block.

Also adds a Docker-based SNMPv3 regression fixture under `tests/snmpv3/`
that covers the spike_kill fix and serves as a shared harness for
related poller correctness tests.

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Co-authored-by: netniV <netniv@hotmail.com>
2026-03-11 19:08:05 +00:00
Thomas VincentandTheWitness c501bc8499 fix(snmp): move count++ inside valid-type branch in snmp_count() (#427)
Fixes #422

`count++` at `snmp.c:899` fired before the `SNMP_ENDOFMIBVIEW` type
check.
When an agent returns ENDOFMIBVIEW with the OID still within the
requested
subtree (RFC 3416 permits this), the out-of-subtree guard does not fire
and
count reaches 1 for an empty table. The poller reindex assertion then
incorrectly triggers a reindex every poll cycle.

Move `count++` inside the `if (vars->type != SNMP_ENDOFMIBVIEW && ...)`
branch so only real entries increment the counter.

Verified by `tests/snmpv3/scripts/run_test.sh` Phase 4: inserts a
`poller_reindex` row with `action=10` for a non-existent OID subtree and
confirms spine logs `output: 0`.

---------

Signed-off-by: Thomas Vincent <thomasvincent@gmail.com>
Co-authored-by: TheWitness <thewitness@cacti.net>
2026-03-07 12:25:31 -05:00