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https://github.com/rsyslog/rsyslog.git
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114 lines
2.3 KiB
C
114 lines
2.3 KiB
C
/* rsyslog testbench tool to mangle .qi files
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*
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* Copyright (C) 2016 by Rainer Gerhards
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* Released uner ASL 2.0
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*/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <string.h>
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static int debug = 0;
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void
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usage(void)
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{
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fprintf(stderr, "mangle_qi -d -q <.qi-file>\n"
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"-d enables debug messages\n");
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exit(1);
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}
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void
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processQI(FILE *const __restrict__ qi)
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{
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char lnbuf[4096];
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char propname[64];
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int rectype;
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int length;
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int queuesize;
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int i;
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int c;
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fgets(lnbuf, sizeof(lnbuf), qi);
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fputs(lnbuf, stdout);
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/* we now read the queue size line */
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/* note: this is quick and dirty, no error checks
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* are done!
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*/
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fgetc(qi); /* skip '+' */
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for(i = 0 ; (c = fgetc(qi)) != ':' ; ++i) {
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propname[i] = c;
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}
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propname[i] = '\0';
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if(strcmp(propname, "iQueueSize")) {
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fprintf(stderr, ".qi file format unknown: line 2 does "
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"not contain iQueueSize property, instead '%s'\n",
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propname);
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exit(1);
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}
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rectype = 0;
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for(c = fgetc(qi) ; isdigit(c) ; c = fgetc(qi))
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rectype = rectype * 10 + c - '0';
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length = 0;
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for(c = fgetc(qi) ; isdigit(c) ; c = fgetc(qi))
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length = length * 10 + c - '0';
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queuesize = 0;
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for(c = fgetc(qi) ; isdigit(c) ; c = fgetc(qi))
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queuesize = queuesize * 10 + c - '0';
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int maxval_for_length = 10;
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for(i = 1 ; i < length ; ++i)
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maxval_for_length *= 10; /* simulate int-exp() */
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if(debug) {
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fprintf(stderr, "rectype: %d\n", rectype);
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fprintf(stderr, "length: %d\n", length);
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fprintf(stderr, "queuesize: %d\n", queuesize);
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fprintf(stderr, "maxval_for_length: %d\n", maxval_for_length);
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}
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queuesize += 1; /* fake invalid queue size */
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if(queuesize > maxval_for_length)
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++length;
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/* ready to go, write mangled queue size */
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printf("+%s:%d:%d:%d:", propname, rectype, length, queuesize);
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/* copy rest of file */
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while((c = fgetc(qi)) != EOF)
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putchar(c);
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}
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int
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main(int argc, char *argv[])
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{
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char *qifile = NULL;
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FILE *qi;
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int opt;
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while((opt = getopt(argc, argv, "dq:")) != -1) {
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switch (opt) {
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case 'q': qifile = optarg;
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break;
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case 'd': debug = 1;
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break;
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default: usage();
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break;
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}
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}
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if(qifile == NULL) {
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fprintf(stderr, "ERROR: -q option MUST be specified\n");
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usage();
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}
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if((qi = fopen(qifile, "r")) == NULL) {
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perror(qifile);
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exit(1);
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}
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processQI(qi);
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return 0;
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}
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