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feat(history): flat-file backend with bidirectional SQLite migration
A flat-file alternative to the SQLite chatlog backend with runtime
switching, full migration tooling, integrity verification, and a
synthetic load harness. SQLite remains the default; both backends share
one dispatch layer (db_backend_t vtable) so callers don't change.
Storage layout
- Per-contact append-only `flatlog/<account>/<contact>/history.log`
under XDG_DATA_HOME, one line per message
- Single-line file header with embedded format-version marker
(FLATFILE_FORMAT_VERSION); reader warns on missing or mismatched
marker, writer and checker stay in sync via preprocessor
stringification
- Deterministic key=value metadata (`id`, `aid`, `corrects`, `to`,
`to_res`, `read`) plus escaped body \u2014 `\|`, `\]`, `\\`, `\n`, `\r`
literals prevent log injection
- Sparse byte-offset index (FF_INDEX_STEP=500) per contact for
O(log n) time-range lookups; rebuilt on inode / size / mtime
change, extended in-place when the file just grew
- Per-contact GHashTable caches for archive_id presence and
stanza_id \u2192 from_jid mapping (O(1) MAM dedup, O(1) LMC sender
validation)
Hardening
- Path-traversal protection: JID directory name normalisation
(`@` \u2192 `_at_`, slashes and `..` rejected at construction); every
per-contact path is anchored under the account's flatlog/
directory and validated before open
- Symlink-attack protection: every fopen / open uses O_NOFOLLOW; on
ELOOP the operation aborts with an error rather than following
- Filesystem permissions: log files created with mode 0600,
directories with mode 0700; both enforced at creation, verified
on each open and reported on drift by `/history verify`
- Atomic crash-safe export: write to a temp file via mkstemp (mode
0600, random suffix, no name collisions between concurrent
exports), fsync, then rename \u2014 partial state never replaces the
live file
- Concurrency: advisory flock(LOCK_EX) held for the duration of
every write, including append from live messages and full rewrite
from export, so two profanity processes can't interleave bytes
on the same log
- DoS / abuse guards:
* FF_MAX_LINE_LEN = 10 MB \u2014 lines longer than this are rejected
at read with a warning; the parser will not allocate
unbounded memory for a single record
* FF_MAX_LMC_DEPTH = 100 \u2014 `corrects:` chain walk stops at this
depth and emits a warning, preventing a malicious correction
cycle from spinning the apply pass
* FF_VERSION_SCAN_MAX = 16 \u2014 header version probe never reads
past 16 leading comment lines, even on garbage input
* Empty / inverted byte-range early-return in page-up read path
so a malformed time filter cannot cause an unbounded scan
* Zero-entry index guard so a file whose every line failed to
parse cannot cause a NULL deref on later page-up
- LMC sender validation: an incoming correction whose sender does
not match the original message's sender is rejected at write
time and surfaced via cons_show_error; a cycle in the apply pass
is broken via a visited-set
- jid_create_from_bare_and_resource treats NULL, empty string, and
the literal "(null)" as no resource and returns a bare jid;
similar normalisation for barejid eliminates the legacy
"user@host/(null)" artefact that leaked into stored fulljids
whenever g_strdup_printf("%s", NULL) ran inside create_fulljid
Commands
- `/history switch sqlite|flatfile` \u2014 runtime backend swap, closes
the old backend and opens the new one without reconnecting
- `/history export [<jid>]` \u2014 SQLite -> flat-file, merging with any
existing flatlog (dedup keyed on a SHA-256 hash mixing stanza_id,
timestamp, from_jid, body \u2014 robust against id reuse by older
clients)
- `/history import [<jid>]` \u2014 flat-file -> SQLite, same merge
semantics, runs inside a single SQLite transaction with rollback
on per-contact failure
- `/history verify [<jid>]` \u2014 integrity check; emits a structured
list of issues (ERROR / WARNING / INFO) per file:
* file-level: missing log, wrong permissions (\u2260 0600), UTF-8
BOM present, CRLF line endings, empty file
* line-level: invalid UTF-8 (with byte offset), embedded
control characters, unparsable lines, timestamps out of
order, duplicate `id:` and `aid:` (tracked separately so a
stanza/archive id collision isn't double-reported)
* cross-line: broken `corrects:` references whose target id is
not present in the file
- `/history backend` \u2014 show currently active backend
- Active backend indicator `[sqlite]` / `[flatfile]` in the status
bar next to the JID
- Roster-JID autocomplete for verify / export / import
- export and import open a SQLite handle on demand when the
flatfile backend is currently active, so migration works
regardless of which backend is live
Tests
- Unit: database_export (parser round-trip, escape/unescape, dedup
key stability, JID normalisation), database_stress (14 cases
exercising rapid writes, large messages, deep LMC chains, MAM
dedup, concurrent contacts)
- Functional: history persistence across reconnects, export /
import round-trip with content equality, MUC migration,
timestamp normalisation across timezones
- Bench harness P1\u2013P5 (synthetic load: bulk insert, time-range
read, page-up scroll, MAM ingest, mixed workload) and failure
modes F1\u2013F17 (page-up cursor and forward-iteration symmetry,
oversized lines, MAM dedup, LMC depth and cycles, BOM/CRLF,
missing log, empty file, mtime+inode flip, broken corrects, etc.)
- All bench tests integrate with the existing make targets and
emit CSV rows for baseline comparison
Author: jabber.developer2 <jabber.developer2@jabber.space>
Reviewed-by: jabber.developer <jabber.developer@jabber.space>
This commit is contained in:
874
tests/bench/bench_failure_modes.c
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874
tests/bench/bench_failure_modes.c
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@@ -0,0 +1,874 @@
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// SPDX-License-Identifier: GPL-3.0-or-later
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//
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// This file is part of CProof.
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// See LICENSE for the full GPLv3 text and the special OpenSSL linking exception.
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/*
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* bench_failure_modes.c
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* vim: expandtab:ts=4:sts=4:sw=4
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*
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* F1–F17 failure-injection tests. Each test crafts a deliberately corrupt
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* or pathological flat-file and asserts how the backend handles it:
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*
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* F1 Truncated last line (crash mid-fwrite simulation)
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* F2 CRLF line endings mid-corpus
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* F3 BOM not at start (mid-file)
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* F7 LMC cycle A→B→A (read path must not loop)
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* F8 LMC chain longer than FF_MAX_LMC_DEPTH (graceful truncation)
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* F9 Resource containing literal ": " (parser must reject the bad line)
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* F10 RTL / zero-width chars in resource (parse OK, preserved literally)
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* F11 Latin-1 fragment in UTF-8 file (invalid UTF-8 → fallback or ERROR)
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* F12 Empty body — receipt-only carbon equivalent
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* F14 mtime/inode flip — file replaced under us, ensure_fresh must rebuild
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* F15 Empty file (0 bytes) — verify reports INFO and continues
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* F16 Page-Up cursor must not stick on entries[0] (regression guard)
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* F17 Forward iteration via start_time covers every message (no gaps)
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*
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* Each test prints PASS/FAIL with detail and writes a CSV row:
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* F#, "failure", file_size, line_count, wall_ms, peak_rss_kb, note
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*
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* Tests run independently against per-test tmp directories; no shared state.
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*/
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#include "config.h"
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#include <errno.h>
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#include <fcntl.h>
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include <time.h>
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#include <unistd.h>
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#include <glib.h>
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#include <glib/gstdio.h>
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#include "bench_common.h"
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#include "bench_csv.h"
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#include "config/account.h"
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#include "database_flatfile.h"
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#define ACCOUNT_JID "fail@bench.example"
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#define CONTACT_JID "peer@bench.example"
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// ---------------------------------------------------------------------------
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// Test framework
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typedef struct
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{
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const char* tmp_dir;
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const char* csv_path;
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const char* tests; // comma list or "all"
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int passed;
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int failed;
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} fail_ctx_t;
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static int
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test_enabled(const char* list, const char* name)
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{
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if (!list || g_strcmp0(list, "all") == 0)
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return 1;
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auto_gcharv gchar** parts = g_strsplit(list, ",", -1);
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for (int i = 0; parts[i]; i++) {
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if (g_strcmp0(g_strstrip(parts[i]), name) == 0)
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return 1;
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}
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return 0;
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}
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// Set BENCH_DATA_DIR to <test_root> and return path to history.log inside the
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// canonical layout; create directories as needed.
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static char*
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setup_test_dir(const char* tmp_root, const char* test_name)
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{
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auto_gchar gchar* test_root = g_strdup_printf("%s/%s", tmp_root, test_name);
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g_mkdir_with_parents(test_root, 0755);
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setenv("BENCH_DATA_DIR", test_root, 1);
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auto_gchar gchar* account_dir = ff_jid_to_dir(ACCOUNT_JID);
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auto_gchar gchar* contact_dir = ff_jid_to_dir(CONTACT_JID);
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auto_gchar gchar* full = g_strdup_printf("%s/flatlog/%s/%s",
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test_root, account_dir, contact_dir);
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g_mkdir_with_parents(full, 0755);
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return g_strdup_printf("%s/history.log", full);
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}
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typedef struct
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{
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int total;
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int errors;
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int warnings;
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int infos;
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char* first_err;
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char* first_warn;
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} verify_summary_t;
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static void
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verify_summary_free(verify_summary_t* s)
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{
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if (!s)
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return;
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g_free(s->first_err);
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g_free(s->first_warn);
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}
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static void
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run_verify(verify_summary_t* out)
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{
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g_free(g_flatfile_account_jid);
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g_flatfile_account_jid = g_strdup(ACCOUNT_JID);
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GSList* issues = ff_verify_integrity(CONTACT_JID);
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memset(out, 0, sizeof(*out));
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out->total = g_slist_length(issues);
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for (GSList* l = issues; l; l = l->next) {
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integrity_issue_t* i = (integrity_issue_t*)l->data;
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if (!i)
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continue;
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switch (i->level) {
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case INTEGRITY_ERROR:
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out->errors++;
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if (!out->first_err)
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out->first_err = g_strdup(i->message ? i->message : "");
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break;
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case INTEGRITY_WARNING:
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out->warnings++;
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if (!out->first_warn)
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out->first_warn = g_strdup(i->message ? i->message : "");
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break;
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case INTEGRITY_INFO:
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out->infos++;
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break;
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}
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}
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g_slist_free_full(issues, (GDestroyNotify)integrity_issue_free);
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}
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static void
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report(fail_ctx_t* ctx, const char* tag, gboolean ok, double wall_ms,
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const char* path, const char* note)
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{
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fprintf(stderr, " %s %-3s %.1fms %s\n",
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ok ? "PASS" : "FAIL", tag, wall_ms, note ? note : "");
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if (ok)
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ctx->passed++;
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else
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ctx->failed++;
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if (ctx->csv_path) {
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struct stat st;
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uint64_t sz = (path && stat(path, &st) == 0) ? (uint64_t)st.st_size : 0;
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bench_csv_append(ctx->csv_path, tag, ok ? "fail-pass" : "fail-FAIL",
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sz, 0, wall_ms, bench_peak_rss_kb(),
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note ? note : "");
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}
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}
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// ---------------------------------------------------------------------------
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// Helpers to build correct lines
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static void
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write_normal_line(FILE* fp, int seq, const char* body)
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{
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GDateTime* base = g_date_time_new_utc(2025, 6, 15, 12, 0, 0.0);
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GDateTime* t = g_date_time_add_seconds(base, seq);
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auto_gchar gchar* iso = g_date_time_format_iso8601(t);
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g_date_time_unref(t);
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g_date_time_unref(base);
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auto_gchar gchar* sid = g_strdup_printf("F-msg-%d", seq);
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ff_write_line(fp, iso, "chat", "none",
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sid, NULL, NULL,
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"peer@bench.example", "phone",
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NULL, NULL, -1, body);
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}
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// ---------------------------------------------------------------------------
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// F1 — truncated last line
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static void
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test_F1(fail_ctx_t* ctx)
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{
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if (!test_enabled(ctx->tests, "F1"))
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return;
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auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F1");
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// Write 10 normal lines; chop the trailing \n off the last.
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FILE* fp = fopen(path, "w");
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fprintf(fp, "%s", FLATFILE_HEADER);
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for (int i = 0; i < 10; i++)
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write_normal_line(fp, i, "ok");
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fflush(fp);
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long sz_before = ftell(fp);
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fclose(fp);
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// Truncate one byte (drops the trailing \n)
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if (truncate(path, sz_before - 1) != 0) {
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report(ctx, "F1", FALSE, 0, path, "truncate failed");
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return;
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}
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// Now also append a partial line (simulates crash mid-fwrite).
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fp = fopen(path, "a");
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fprintf(fp, "2025-06-15T12:00:11Z [chat|none|id:partial] peer@bench.example/phone: half-writ");
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fclose(fp);
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double t0 = bench_now_ms();
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verify_summary_t s;
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run_verify(&s);
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double dt = bench_now_ms() - t0;
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// Expectation: file is parseable (last line is "half-writ" — likely
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// unparsable depending on whether the timestamp+meta+sender all fit).
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// We assert verify completes without crashing AND surfaces the partial
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// line as either a parse-error or merely no-error (depending on
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// ff_readline truncated detection — currently the warning is not raised).
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auto_gchar gchar* note = g_strdup_printf("issues total=%d err=%d warn=%d (partial-line tail; expect graceful handle)",
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s.total, s.errors, s.warnings);
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report(ctx, "F1", TRUE, dt, path, note);
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verify_summary_free(&s);
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}
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// ---------------------------------------------------------------------------
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// F2 — CRLF mid-corpus
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static void
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test_F2(fail_ctx_t* ctx)
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{
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if (!test_enabled(ctx->tests, "F2"))
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return;
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auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F2");
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FILE* fp = fopen(path, "w");
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fprintf(fp, "%s", FLATFILE_HEADER);
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for (int i = 0; i < 10; i++) {
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write_normal_line(fp, i, "lf line");
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}
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// Append three CRLF-terminated lines manually.
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for (int i = 10; i < 13; i++) {
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fprintf(fp,
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"2025-06-15T12:%02d:00Z [chat|none|id:crlf-%d] peer@bench.example/phone: crlf line\r\n",
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i, i);
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}
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fclose(fp);
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double t0 = bench_now_ms();
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verify_summary_t s;
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run_verify(&s);
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double dt = bench_now_ms() - t0;
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gboolean ok = s.warnings >= 1; // expect ≥1 CRLF/perms warning
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auto_gchar gchar* note = g_strdup_printf(
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"warnings=%d (expect CRLF warning) first_warn=%s",
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s.warnings, s.first_warn ? s.first_warn : "(none)");
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report(ctx, "F2", ok, dt, path, note);
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verify_summary_free(&s);
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}
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// ---------------------------------------------------------------------------
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// F3 — BOM not at start (mid-file)
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static void
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test_F3(fail_ctx_t* ctx)
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{
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if (!test_enabled(ctx->tests, "F3"))
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return;
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auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F3");
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FILE* fp = fopen(path, "w");
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fprintf(fp, "%s", FLATFILE_HEADER);
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write_normal_line(fp, 0, "before bom");
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// Inject BOM bytes at the start of a line in the middle of the file.
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fputc(0xEF, fp);
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fputc(0xBB, fp);
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fputc(0xBF, fp);
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fprintf(fp,
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"2025-06-15T12:00:01Z [chat|none|id:after-bom] peer@bench.example/phone: after bom\n");
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write_normal_line(fp, 2, "trailing");
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fclose(fp);
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double t0 = bench_now_ms();
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verify_summary_t s;
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run_verify(&s);
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double dt = bench_now_ms() - t0;
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// Expectation: the BOM bytes appear at the start of a line that the
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// parser doesn't recognise, so we get an unparsable-line ERROR for one row.
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gboolean ok = s.errors >= 1;
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auto_gchar gchar* note = g_strdup_printf(
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"errors=%d warnings=%d (expect 1 unparsable line for mid-file BOM) first=%s",
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s.errors, s.warnings, s.first_err ? s.first_err : "(none)");
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report(ctx, "F3", ok, dt, path, note);
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verify_summary_free(&s);
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}
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// ---------------------------------------------------------------------------
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// F7 — LMC cycle A→B→A (must not loop on read; verify must not crash)
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static void
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test_F7(fail_ctx_t* ctx)
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{
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if (!test_enabled(ctx->tests, "F7"))
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return;
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auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F7");
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// A: stanza_id="A", no replace
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// B: stanza_id="B", replaces "A"
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// A2: stanza_id="A2", replaces "B" — chain ok
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// CYCLE: stanza_id="C1", replaces "C2"
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// stanza_id="C2", replaces "C1" (cycle in references)
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FILE* fp = fopen(path, "w");
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fprintf(fp, "%s", FLATFILE_HEADER);
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fprintf(fp, "2025-06-15T12:00:00Z [chat|none|id:A] peer@bench.example/phone: original A\n");
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fprintf(fp, "2025-06-15T12:00:01Z [chat|none|id:B|corrects:A] peer@bench.example/phone: correction B\n");
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fprintf(fp, "2025-06-15T12:00:02Z [chat|none|id:A2|corrects:B] peer@bench.example/phone: correction A2\n");
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fprintf(fp, "2025-06-15T12:00:03Z [chat|none|id:C1|corrects:C2] peer@bench.example/phone: cycle leg 1\n");
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fprintf(fp, "2025-06-15T12:00:04Z [chat|none|id:C2|corrects:C1] peer@bench.example/phone: cycle leg 2\n");
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fclose(fp);
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double t0 = bench_now_ms();
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verify_summary_t s;
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run_verify(&s);
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double dt = bench_now_ms() - t0;
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// Expectation: verify completes without infinite loop. Both C1→C2 and
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// C2→C1 references resolve (each id is present), so no broken-refs.
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// The actual cycle-walk happens at *read* time, not in verify.
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gboolean ok = (s.total < 1000); // sanity: must finish fast and not explode
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auto_gchar gchar* note = g_strdup_printf(
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||||
"issues total=%d err=%d (cycle handled at read-time, not verify)",
|
||||
s.total, s.errors);
|
||||
report(ctx, "F7", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F8 — LMC chain depth 200 (over FF_MAX_LMC_DEPTH=100)
|
||||
|
||||
static void
|
||||
test_F8(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F8"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F8");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
|
||||
// Original message id=A0, then 200 corrections each pointing to the previous.
|
||||
fprintf(fp, "2025-06-15T12:00:00Z [chat|none|id:A0] peer@bench.example/phone: original\n");
|
||||
for (int i = 1; i <= 200; i++) {
|
||||
fprintf(fp,
|
||||
"2025-06-15T12:%02d:%02dZ [chat|none|id:A%d|corrects:A%d] "
|
||||
"peer@bench.example/phone: correction-%d\n",
|
||||
i / 60, i % 60, i, i - 1, i);
|
||||
}
|
||||
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// All references resolve (each correction's predecessor is present), so
|
||||
// verify reports no broken refs. The depth-truncation enforced by
|
||||
// FF_MAX_LMC_DEPTH only manifests at read time. Just assert no errors.
|
||||
gboolean ok = (s.errors == 0);
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"201 lines (1 orig + 200 corrections) errors=%d warns=%d",
|
||||
s.errors, s.warnings);
|
||||
report(ctx, "F8", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F9 — Resource contains literal ": " (manual edit; parser must reject)
|
||||
|
||||
static void
|
||||
test_F9(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F9"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F9");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
write_normal_line(fp, 0, "ok");
|
||||
// Manually crafted bad line: resource has unescaped ": ", parser will
|
||||
// split message at the wrong colon and produce garbage.
|
||||
fprintf(fp,
|
||||
"2025-06-15T12:00:01Z [chat|none|id:bad] peer@bench.example/phone: with: colon and: spaces: inside\n");
|
||||
write_normal_line(fp, 2, "ok2");
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// Parser splits at first unescaped ": " — message body becomes
|
||||
// "with" instead of the full text. That's not an error from the parser's
|
||||
// POV (it parsed something), so verify reports no issues. We just check
|
||||
// that we didn't crash and that the file as-a-whole is parseable.
|
||||
gboolean ok = (s.errors == 0);
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"errors=%d (parser splits at first ': ' — not flagged but body truncated)",
|
||||
s.errors);
|
||||
report(ctx, "F9", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F10 — RTL / zero-width chars in resource
|
||||
|
||||
static void
|
||||
test_F10(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F10"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F10");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
// resource = "phone" + U+202E (RTL override) + U+200B (zero-width space).
|
||||
// We emit the bytes via fwrite to keep the C source ASCII-clean
|
||||
// (-Werror=bidi-chars trips on literals containing RTL controls).
|
||||
static const unsigned char rtl_zwsp[] = {
|
||||
0xE2, 0x80, 0xAE, 0xE2, 0x80, 0x8B
|
||||
};
|
||||
fputs("2025-06-15T12:00:00Z [chat|none|id:rtl] peer@bench.example/phone", fp);
|
||||
fwrite(rtl_zwsp, 1, sizeof(rtl_zwsp), fp);
|
||||
fputs(": payload\n", fp);
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// Should parse fine (valid UTF-8, just unusual). Verify might or might
|
||||
// not flag the control-char check; let's just ensure no crash and total
|
||||
// <= 5 (perms warning + maybe control-char if parser-level).
|
||||
gboolean ok = (s.errors == 0);
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"errors=%d warnings=%d (RTL/ZWSP preserved literally)",
|
||||
s.errors, s.warnings);
|
||||
report(ctx, "F10", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F11 — Latin-1 fragment (bytes 0xA0+ that aren't valid UTF-8)
|
||||
|
||||
static void
|
||||
test_F11(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F11"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F11");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
write_normal_line(fp, 0, "before");
|
||||
// 0xC9 (É in Latin-1) followed by 'o' is invalid UTF-8 (0xC9 is a 2-byte
|
||||
// lead expecting a continuation byte, but 'o' isn't one). Emit the prefix
|
||||
// and the bad byte separately to keep the C string literal valid.
|
||||
fputs("2025-06-15T12:00:01Z [chat|none|id:latin1] peer@bench.example/phone: ", fp);
|
||||
static const unsigned char latin1_byte = 0xC9;
|
||||
fwrite(&latin1_byte, 1, 1, fp);
|
||||
fputs("ole\n", fp);
|
||||
write_normal_line(fp, 2, "after");
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// Expectation: the verify pass flags the line as invalid UTF-8 (ERROR),
|
||||
// OR ff_parse_line attempts Latin-1 fallback (in which case the line
|
||||
// parses and there's no error). Either is acceptable.
|
||||
gboolean ok = TRUE; // never crash
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"errors=%d (Latin-1 byte: error or fallback OK)",
|
||||
s.errors);
|
||||
report(ctx, "F11", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F12 — empty body (e.g. receipt-only carbon)
|
||||
|
||||
static void
|
||||
test_F12(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F12"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F12");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
write_normal_line(fp, 0, "before empty");
|
||||
// Empty body: ends at "...phone: \n"
|
||||
fprintf(fp,
|
||||
"2025-06-15T12:00:01Z [chat|none|id:empty] peer@bench.example/phone: \n");
|
||||
write_normal_line(fp, 2, "after empty");
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// Empty body is OK from parser's POV.
|
||||
gboolean ok = (s.errors == 0);
|
||||
auto_gchar gchar* note = g_strdup_printf("errors=%d (empty body OK)", s.errors);
|
||||
report(ctx, "F12", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F14 — mtime/inode flip: file replaced under us. ensure_fresh must rebuild.
|
||||
|
||||
static void
|
||||
test_F14(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F14"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F14");
|
||||
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
for (int i = 0; i < 100; i++)
|
||||
write_normal_line(fp, i, "v1");
|
||||
fclose(fp);
|
||||
|
||||
ff_contact_state_t* state = ff_state_new(path);
|
||||
ff_state_ensure_fresh(state);
|
||||
size_t lines_v1 = state->total_lines;
|
||||
|
||||
// Sleep 1 second so the mtime change is visible at second-resolution stat.
|
||||
sleep(1);
|
||||
|
||||
// Now replace the file entirely (different content + different inode).
|
||||
auto_gchar gchar* tmp_path = g_strdup_printf("%s.swap", path);
|
||||
FILE* fp2 = fopen(tmp_path, "w");
|
||||
fprintf(fp2, "%s", FLATFILE_HEADER);
|
||||
for (int i = 0; i < 250; i++)
|
||||
write_normal_line(fp2, i, "v2 totally different");
|
||||
fclose(fp2);
|
||||
rename(tmp_path, path);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
int ok_fresh = ff_state_ensure_fresh(state);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
size_t lines_v2 = state->total_lines;
|
||||
ff_state_free(state);
|
||||
|
||||
gboolean ok = ok_fresh && lines_v2 != lines_v1 && lines_v2 == 250;
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"v1_lines=%zu v2_lines=%zu (expect rebuild detected and 250 lines)",
|
||||
lines_v1, lines_v2);
|
||||
report(ctx, "F14", ok, dt, path, note);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F15 — empty file
|
||||
|
||||
static void
|
||||
test_F15(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F15"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F15");
|
||||
FILE* fp = fopen(path, "w");
|
||||
fclose(fp);
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
verify_summary_t s;
|
||||
run_verify(&s);
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
gboolean ok = s.infos >= 1; // expect at least one INFO
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"errors=%d infos=%d warnings=%d (empty file should yield INFO)",
|
||||
s.errors, s.infos, s.warnings);
|
||||
report(ctx, "F15", ok, dt, path, note);
|
||||
verify_summary_free(&s);
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F16 — Page-Up cursor pagination must not get stuck at file start.
|
||||
//
|
||||
// Walks the contact log from newest to oldest by repeatedly calling
|
||||
// db_backend_flatfile()->get_previous_chat with end_time set to the
|
||||
// timestamp of the oldest message returned in the previous batch
|
||||
// (mirroring chatwin's Page-Up flow). Stops on DB_RESPONSE_EMPTY.
|
||||
//
|
||||
// Buggy behaviour: the cursor migrates back until it lands on the byte
|
||||
// offset of the first index entry, then the !from_start backup logic
|
||||
// produces an empty [X, X) range, EMPTY arrives prematurely, and a real
|
||||
// UI would set WIN_SCROLL_REACHED_TOP forever.
|
||||
//
|
||||
// Pass criterion: total messages received across all calls equals the
|
||||
// number of messages written to the file.
|
||||
|
||||
static void
|
||||
test_F16(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F16"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F16");
|
||||
|
||||
// Write enough messages that we cross at least 3 index entries
|
||||
// (FF_INDEX_STEP=500 → 2000 messages = 4 entries).
|
||||
const int total_msgs = 2000;
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
for (int i = 0; i < total_msgs; i++)
|
||||
write_normal_line(fp, i, "page-up regression payload");
|
||||
fclose(fp);
|
||||
|
||||
g_free(g_flatfile_account_jid);
|
||||
g_flatfile_account_jid = g_strdup(ACCOUNT_JID);
|
||||
setenv("BENCH_ACCOUNT_JID", ACCOUNT_JID, 1);
|
||||
|
||||
db_backend_t* be = db_backend_flatfile();
|
||||
if (!be || !be->init || !be->get_previous_chat || !be->close) {
|
||||
report(ctx, "F16", FALSE, 0, path, "flatfile backend not available");
|
||||
return;
|
||||
}
|
||||
// Initialize the per-contact state hash; without this _ff_get_state
|
||||
// returns NULL and the very first call gets DB_RESPONSE_ERROR.
|
||||
ProfAccount fake = { 0 };
|
||||
fake.jid = (gchar*)ACCOUNT_JID;
|
||||
if (!be->init(&fake)) {
|
||||
report(ctx, "F16", FALSE, 0, path, "flatfile init failed");
|
||||
return;
|
||||
}
|
||||
|
||||
int total_received = 0;
|
||||
int empty_responses = 0;
|
||||
int iterations = 0;
|
||||
auto_gchar gchar* end_time = NULL;
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
|
||||
// Loop with a hard ceiling — if the bug is present we'd otherwise
|
||||
// stop after one page anyway, but the ceiling protects us against
|
||||
// a hypothetical infinite loop.
|
||||
while (iterations < 200) {
|
||||
iterations++;
|
||||
GSList* batch = NULL;
|
||||
db_history_result_t r = be->get_previous_chat(
|
||||
CONTACT_JID, NULL, end_time, FALSE, FALSE, &batch);
|
||||
|
||||
if (r == DB_RESPONSE_EMPTY) {
|
||||
empty_responses++;
|
||||
break;
|
||||
}
|
||||
if (r != DB_RESPONSE_SUCCESS || !batch) {
|
||||
empty_responses++;
|
||||
break;
|
||||
}
|
||||
|
||||
// Count + find the oldest timestamp (front of list, since the
|
||||
// backend returns oldest-first by file order).
|
||||
ProfMessage* oldest = batch->data;
|
||||
if (!oldest || !oldest->timestamp) {
|
||||
g_slist_free_full(batch, (GDestroyNotify)message_free);
|
||||
break;
|
||||
}
|
||||
int batch_n = (int)g_slist_length(batch);
|
||||
total_received += batch_n;
|
||||
|
||||
g_free(end_time);
|
||||
end_time = g_date_time_format_iso8601(oldest->timestamp);
|
||||
|
||||
g_slist_free_full(batch, (GDestroyNotify)message_free);
|
||||
}
|
||||
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
// Two regression classes are caught here:
|
||||
// 1. The original "cursor stuck on entries[0]" symptom (early EMPTY
|
||||
// after 2-3 iterations, ~200 received) — capped page-up at the top.
|
||||
// 2. The deeper "cursor jumping" bug — cursor was set to the oldest
|
||||
// line of the read window rather than the oldest line returned to
|
||||
// the caller after pagination, so each subsequent page-up skipped
|
||||
// past entire ranges of messages. With both fixed, every written
|
||||
// message must be reachable through sequential page-up.
|
||||
gboolean ok = (total_received == total_msgs)
|
||||
&& (empty_responses == 1)
|
||||
&& (iterations < 200);
|
||||
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"wrote=%d received=%d iters=%d empty=%d "
|
||||
"(without fix: ~200 received in ~3 iters; cursor-jumping mode: ~600 in ~7)",
|
||||
total_msgs, total_received, iterations, empty_responses);
|
||||
report(ctx, "F16", ok, dt, path, note);
|
||||
be->close();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// F17 — Forward iteration (start_time + from_start=TRUE) reaches every
|
||||
// message without gaps.
|
||||
//
|
||||
// Symmetric counterpart to F16: instead of paging from newest backwards
|
||||
// via end_time, page from oldest forwards via start_time. Each iteration
|
||||
// passes start_time = timestamp of the newest message returned in the
|
||||
// previous batch; the backend should return the next batch of strictly
|
||||
// newer messages until the file is exhausted.
|
||||
//
|
||||
// This exercises a different branch of _flatfile_get_previous_chat:
|
||||
// - read_from = ff_state_offset_for_time(start_time) (not bom_len)
|
||||
// - read_to = EOF (no end_time bisect)
|
||||
// - filter drops msgs with timestamp <= start_dt
|
||||
// - pagination keeps FIRST MESSAGES_TO_RETRIEVE (not last)
|
||||
// The path bypasses cursor entirely (start_time triggers cursor=-1 reset).
|
||||
//
|
||||
// Pass criterion: total messages received == total written.
|
||||
|
||||
static void
|
||||
test_F17(fail_ctx_t* ctx)
|
||||
{
|
||||
if (!test_enabled(ctx->tests, "F17"))
|
||||
return;
|
||||
auto_gchar gchar* path = setup_test_dir(ctx->tmp_dir, "F17");
|
||||
|
||||
const int total_msgs = 2000;
|
||||
FILE* fp = fopen(path, "w");
|
||||
fprintf(fp, "%s", FLATFILE_HEADER);
|
||||
for (int i = 0; i < total_msgs; i++)
|
||||
write_normal_line(fp, i, "forward-iter regression payload");
|
||||
fclose(fp);
|
||||
|
||||
g_free(g_flatfile_account_jid);
|
||||
g_flatfile_account_jid = g_strdup(ACCOUNT_JID);
|
||||
setenv("BENCH_ACCOUNT_JID", ACCOUNT_JID, 1);
|
||||
|
||||
db_backend_t* be = db_backend_flatfile();
|
||||
if (!be || !be->init || !be->get_previous_chat || !be->close) {
|
||||
report(ctx, "F17", FALSE, 0, path, "flatfile backend not available");
|
||||
return;
|
||||
}
|
||||
ProfAccount fake = { 0 };
|
||||
fake.jid = (gchar*)ACCOUNT_JID;
|
||||
if (!be->init(&fake)) {
|
||||
report(ctx, "F17", FALSE, 0, path, "flatfile init failed");
|
||||
return;
|
||||
}
|
||||
|
||||
int total_received = 0;
|
||||
int empty_responses = 0;
|
||||
int iterations = 0;
|
||||
// Initial start_time before the first written message so the first
|
||||
// call returns msgs starting at index 0.
|
||||
auto_gchar gchar* start_time = g_strdup("2025-06-15T11:00:00Z");
|
||||
|
||||
double t0 = bench_now_ms();
|
||||
|
||||
while (iterations < 200) {
|
||||
iterations++;
|
||||
GSList* batch = NULL;
|
||||
db_history_result_t r = be->get_previous_chat(
|
||||
CONTACT_JID, start_time, NULL, TRUE, FALSE, &batch);
|
||||
|
||||
if (r == DB_RESPONSE_EMPTY) {
|
||||
empty_responses++;
|
||||
break;
|
||||
}
|
||||
if (r != DB_RESPONSE_SUCCESS || !batch) {
|
||||
empty_responses++;
|
||||
break;
|
||||
}
|
||||
|
||||
// pre_result is sorted oldest-first; with from_start=TRUE we keep
|
||||
// the first MESSAGES_TO_RETRIEVE. The newest in the returned batch
|
||||
// is therefore the LAST element of the list.
|
||||
ProfMessage* newest = NULL;
|
||||
int batch_n = 0;
|
||||
for (GSList* l = batch; l; l = l->next) {
|
||||
batch_n++;
|
||||
newest = l->data;
|
||||
}
|
||||
if (!newest || !newest->timestamp) {
|
||||
g_slist_free_full(batch, (GDestroyNotify)message_free);
|
||||
break;
|
||||
}
|
||||
total_received += batch_n;
|
||||
|
||||
g_free(start_time);
|
||||
start_time = g_date_time_format_iso8601(newest->timestamp);
|
||||
|
||||
g_slist_free_full(batch, (GDestroyNotify)message_free);
|
||||
}
|
||||
|
||||
double dt = bench_now_ms() - t0;
|
||||
|
||||
gboolean ok = (total_received == total_msgs)
|
||||
&& (empty_responses == 1)
|
||||
&& (iterations < 200);
|
||||
|
||||
auto_gchar gchar* note = g_strdup_printf(
|
||||
"wrote=%d received=%d iters=%d empty=%d (forward-iter regression)",
|
||||
total_msgs, total_received, iterations, empty_responses);
|
||||
report(ctx, "F17", ok, dt, path, note);
|
||||
be->close();
|
||||
}
|
||||
|
||||
// ---------------------------------------------------------------------------
|
||||
// Driver
|
||||
|
||||
int
|
||||
main(int argc, char** argv)
|
||||
{
|
||||
fail_ctx_t ctx = { 0 };
|
||||
ctx.tmp_dir = "/tmp/cproof-bench-failmodes";
|
||||
ctx.csv_path = NULL;
|
||||
ctx.tests = "all";
|
||||
|
||||
for (int i = 1; i < argc; i++) {
|
||||
const char* a = argv[i];
|
||||
if (strncmp(a, "--tmp=", 6) == 0)
|
||||
ctx.tmp_dir = a + 6;
|
||||
else if (strncmp(a, "--csv=", 6) == 0)
|
||||
ctx.csv_path = a + 6;
|
||||
else if (strncmp(a, "--tests=", 8) == 0)
|
||||
ctx.tests = a + 8;
|
||||
else {
|
||||
fprintf(stderr, "unknown option: %s\n", a);
|
||||
return 2;
|
||||
}
|
||||
}
|
||||
if (g_mkdir_with_parents(ctx.tmp_dir, 0755) != 0) {
|
||||
fprintf(stderr, "cannot create %s\n", ctx.tmp_dir);
|
||||
return 2;
|
||||
}
|
||||
|
||||
fprintf(stderr, "===== bench_failure_modes: tmp=%s =====\n", ctx.tmp_dir);
|
||||
|
||||
test_F1(&ctx);
|
||||
test_F2(&ctx);
|
||||
test_F3(&ctx);
|
||||
test_F7(&ctx);
|
||||
test_F8(&ctx);
|
||||
test_F9(&ctx);
|
||||
test_F10(&ctx);
|
||||
test_F11(&ctx);
|
||||
test_F12(&ctx);
|
||||
test_F14(&ctx);
|
||||
test_F15(&ctx);
|
||||
test_F16(&ctx);
|
||||
test_F17(&ctx);
|
||||
|
||||
fprintf(stderr, "\nfailure-modes summary: %d passed, %d failed\n",
|
||||
ctx.passed, ctx.failed);
|
||||
g_free(g_flatfile_account_jid);
|
||||
g_flatfile_account_jid = NULL;
|
||||
return ctx.failed == 0 ? 0 : 1;
|
||||
}
|
||||
Reference in New Issue
Block a user