/**
* write stacktrace to oscam.crash. file is always appended
* Usage:
* 1. compile oscam with debug parameters (Makefile: DS_OPTS="-ggdb")
* 2. you need gdb installed and working on the local machine
* 3. start oscam with parameter: -a
*/
static void cs_dumpstack(int32_t sig)
{
FILE *fp = fopen("oscam.crash", "a+");
time_t timep;
char buf[200];
time(&timep);
cs_ctime_r(&timep, buf);
fprintf(stderr, "crashed with signal %d on %swriting oscam.crash\n", sig, buf);
fprintf(fp, "%sOSCam cardserver v%s, build r%s (%s)\n", buf, CS_VERSION, CS_SVN_VERSION, CS_TARGET);
fprintf(fp, "FATAL: Signal %d: %s Fault. Logged StackTrace:\n\n", sig, (sig == SIGSEGV) ? "Segmentation" : ((sig == SIGBUS) ? "Bus" : "Unknown"));
fclose(fp);
FILE *cmd = fopen("/tmp/gdbcmd", "w");
fputs("bt\n", cmd);
fputs("thread apply all bt\n", cmd);
fclose(cmd);
snprintf(buf, sizeof(buf)-1, "gdb %s %d -batch -x /tmp/gdbcmd >> oscam.crash", prog_name, getpid());
if(system(buf) == -1)
fprintf(stderr, "Fatal error on trying to start gdb process.");
exit(-1);
}
int32_t cs_open_logfiles(void)
{
char *starttext;
if(logStarted) starttext = "log switched";
else starttext = "started";
if (!fp && cfg.logfile) { //log to file
if ((fp = fopen(cfg.logfile, "a+")) <= (FILE *)0) {
fp = (FILE *)0;
fprintf(stderr, "couldn't open logfile: %s (errno %d %s)\n", cfg.logfile, errno, strerror(errno));
} else {
setvbuf(fp, NULL, _IOFBF, 8*1024);
time_t t;
char line[80];
memset(line, '-', sizeof(line));
line[(sizeof(line)/sizeof(char)) - 1] = '\0';
time(&t);
if (!cfg.disablelog){
char buf[28];
cs_ctime_r(&t, buf);
fprintf(fp, "\n%s\n>> OSCam << cardserver %s at %s%s\n", line, starttext, buf, line);
}
}
}
// according to syslog docu: calling closelog is not necessary and calling openlog multiple times is safe
// We use openlog to set the default syslog settings so that it's possible to allow switching syslog on and off
openlog("oscam", LOG_NDELAY, LOG_DAEMON);
cs_log_nolock(">> OSCam << cardserver %s, version " CS_VERSION ", build #" CS_SVN_VERSION " (" CS_TARGET ")", starttext);
cs_log_config();
return(fp <= (FILE *)0);
}