rsyslog/tests/chkseq.c
Rainer Gerhards b326c76f45 style: normalize C source formatting via clang-format (PoC)
This commit applies the new canonical formatting style using `clang-format` with custom settings (notably 4-space indentation), as part of our shift toward automated formatting normalization.

⚠️ No functional changes are included — only whitespace and layout modifications as produced by `clang-format`.

This change is part of the formatting modernization strategy discussed in:
https://github.com/rsyslog/rsyslog/issues/5747

Key context:
- Formatting is now treated as a disposable view, normalized via tooling.
- The `.clang-format` file defines the canonical style.
- A fixup script (`devtools/format-code.sh`) handles remaining edge cases.
- Formatting commits are added to `.git-blame-ignore-revs` to reduce noise.
- Developers remain free to format code however they prefer locally.
2025-07-16 13:56:21 +02:00

250 lines
8.3 KiB
C

/* Checks if a file consists of line of strictly monotonically
* increasing numbers. An expected start and end number may
* be set.
*
* Params
* -f<filename> file to process, if not given stdin is processed.
* -s<starting number> -e<ending number>
* default for s is 0. -e should be given (else it is also 0)
* -d may be specified, in which case duplicate messages are permitted.
* -m number of messages permitted to be missing without triggering a
* failure. This is necessary for some failover tests, where it is
* impossible to totally guard against messagt loss. By default, NO
* message is permitted to be lost.
* -T anticipate truncation (which means specified payload length may be
* more than actual payload (which may have been truncated)
* -i increment between messages (default: 1). Can be used for tests which
* intentionally leave consistent gaps in the message numbering.
*
* Part of the testbench for rsyslog.
*
* Copyright 2009-2018 Rainer Gerhards and Adiscon GmbH.
*
* This file is part of rsyslog.
*
* Rsyslog is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Rsyslog is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Rsyslog. If not, see <http://www.gnu.org/licenses/>.
*
* A copy of the GPL can be found in the file "COPYING" in this distribution.
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#if defined(_AIX)
#include <unistd.h>
#else
#include <getopt.h>
#endif
int main(int argc, char *argv[]) {
FILE *fp;
int val;
int i;
int ret = 0;
int scanfOK;
int verbose = 0;
int bHaveExtraData = 0;
int bAnticipateTruncation = 0;
int dupsPermitted = 0;
int start = 0, end = 0;
int opt;
int lostok = 0; /* how many messages are OK to be lost? */
int nDups = 0;
int increment = 1;
int reachedEOF;
int edLen; /* length of extra data */
static char edBuf[500 * 1024]; /* buffer for extra data (pretty large to be on the save side...) */
static char ioBuf[sizeof(edBuf) + 1024];
char *file = NULL;
while ((opt = getopt(argc, argv, "i:e:f:ds:vm:ET")) != EOF) {
switch ((char)opt) {
case 'f':
file = optarg;
break;
case 'd':
dupsPermitted = 1;
break;
case 'i':
increment = atoi(optarg);
break;
case 'e':
end = atoi(optarg);
break;
case 's':
start = atoi(optarg);
break;
case 'v':
++verbose;
break;
case 'm':
lostok = atoi(optarg);
break;
case 'E':
bHaveExtraData = 1;
break;
case 'T':
bAnticipateTruncation = 1;
break;
default:
printf("Invalid call of chkseq, optchar='%c'\n", opt);
printf("Usage: chkseq file -sstart -eend -d -E\n");
exit(1);
}
}
if (start > end) {
printf("start must be less than or equal end!\n");
exit(1);
}
if (verbose) {
printf("chkseq: start %d, end %d\n", start, end);
}
/* read file */
if (file == NULL) {
fp = stdin;
} else {
fp = fopen(file, "r");
}
if (fp == NULL) {
printf("error opening file '%s'\n", file);
perror(file);
exit(1);
}
for (i = start; i <= end; i += increment) {
if (bHaveExtraData) {
if (fgets(ioBuf, sizeof(ioBuf), fp) == NULL) {
scanfOK = 0;
} else {
scanfOK = sscanf(ioBuf, "%d,%d,%s\n", &val, &edLen, edBuf) == 3 ? 1 : 0;
}
if (edLen != (int)strlen(edBuf)) {
if (bAnticipateTruncation == 1) {
if (edLen < (int)strlen(edBuf)) {
printf(
"extra data length specified %d, but actually is %ld in"
" record %d (truncation was anticipated, but payload should"
" have been smaller than data-length, not larger)\n",
edLen, (long)strlen(edBuf), i);
exit(1);
}
} else {
printf("extra data length specified %d, but actually is %ld in record %d\n", edLen,
(long)strlen(edBuf), i);
exit(1);
}
}
} else {
if (fgets(ioBuf, sizeof(ioBuf), fp) == NULL) {
scanfOK = 0;
} else {
scanfOK = sscanf(ioBuf, "%d\n", &val) == 1 ? 1 : 0;
}
}
if (!scanfOK) {
printf("scanf error in index i=%d\n", i);
exit(1);
}
while (val > i && lostok > 0) {
--lostok;
printf("message %d missing (ok due to -m [now %d])\n", i, lostok);
++i;
}
if (val != i) {
if (val == i - increment && dupsPermitted) {
--i;
++nDups;
} else {
printf("read value %d, but expected value %d\n", val, i);
exit(1);
}
}
}
if (i - increment != end) {
printf("lastrecord does not match. file: %d, expected %d\n", i - increment, end);
exit(1);
}
int c = getc(fp);
if (c == EOF) {
reachedEOF = 1;
} else {
ungetc(c, fp);
/* if duplicates are permitted, we need to do a final check if we have duplicates at the
* end of file.
*/
if (dupsPermitted) {
i = end;
while (!feof(fp)) {
if (bHaveExtraData) {
if (fgets(ioBuf, sizeof(ioBuf), fp) == NULL) {
scanfOK = 0;
} else {
scanfOK = sscanf(ioBuf, "%d,%d,%s\n", &val, &edLen, edBuf) == 3 ? 1 : 0;
}
if (edLen != (int)strlen(edBuf)) {
if (bAnticipateTruncation == 1) {
if (edLen < (int)strlen(edBuf)) {
printf(
"extra data length specified %d, but "
"actually is %ld in record %d (truncation was"
" anticipated, but payload should have been "
"smaller than data-length, not larger)\n",
edLen, (long)strlen(edBuf), i);
exit(1);
}
} else {
printf(
"extra data length specified %d, but actually "
"is %ld in record %d\n",
edLen, (long)strlen(edBuf), i);
exit(1);
}
}
} else {
if (fgets(ioBuf, sizeof(ioBuf), fp) == NULL) {
scanfOK = 0;
} else {
scanfOK = sscanf(ioBuf, "%d\n", &val) == 1 ? 1 : 0;
}
}
if (val != i) {
reachedEOF = 0;
goto breakIF;
}
}
reachedEOF = feof(fp) ? 1 : 0;
} else {
reachedEOF = 0;
}
}
breakIF:
if (nDups != 0) printf("info: had %d duplicates (this is no error)\n", nDups);
if (!reachedEOF) {
printf("end of processing, but NOT end of file! First line of extra data is:\n");
for (c = fgetc(fp); c != '\n' && c != EOF; c = fgetc(fp)) putchar(c);
putchar('\n');
exit(1);
}
exit(ret);
}