log.c

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/*----------------------------------------------------------------------------
 secwatch - Copyright (C) 2006 Nic Stevens -- See COPYING for license details
------------------------------------------------------------------------------
 log.c - functions required for logging and e-mail alerts as well as the basic
 functons for parsing and returning configuration items related logging
-----------------------------------------------------------------------------*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdio.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <errno.h>
#define SYSLOG_NAMES
#include <syslog.h>
#include <strutil.h>
#include <configfile.h>

int writeLog(const char *fmt, ...) {
     va_list ap;
     static int fac=-1, pri, e;
     if(fac == -1) {
          fac = confVarSyslog("logfac",&e);
          pri = confVarSyslog("logpri",&e);
     }
     openlog("secwatch",LOG_PID,fac);
     va_start(ap,fmt);
     vsyslog(pri,fmt,ap);
     va_end(ap);
     return 1;
}
int  inform(char *fmt, ...) {
     char cmdbuf[32767];
     char obuf[1024];
     int x;
     char * mailfrom; 
     char * mailto; 
     char * sendmail; 
     FILE *p;
     va_list ap;

     sendmail = confVarPath("sendmail",&x);
     mailfrom = confVarText("mailfrom",&x);
     mailto = confVarText("mailto",&x);

     va_start(ap,fmt);
     x = vsnprintf(obuf,sizeof(obuf),fmt,ap);
     va_end(ap);

     writeLog(obuf);
     sprintf(cmdbuf, "%s -F%s %s",sendmail,mailfrom,mailto);
     if((p = popen(cmdbuf,"w")) == NULL) {
          writeLog("Could not send mail [%s] %m",cmdbuf);
          return;
     }
     fprintf(p,"Subject: %s\n",obuf);
     fprintf(p,"subject: %s\n\n",obuf);
     fprintf(p,"%s\n",obuf);
     fclose(p);
     return x;
}
char * sysLogPriId(int pri) {
     int i;
     for(i = 0; prioritynames[i].c_name != NULL; i++) 
          if(prioritynames[i].c_val == pri)
               return prioritynames[i].c_name;
     return NULL;
}
int sysLogPri(char *name) {
     int i;
     for(i = 0; prioritynames[i].c_name != NULL; i++) 
          if(strcmp(name,prioritynames[i].c_name) == 0)
               return prioritynames[i].c_val;
     return -1;
}
char * sysLogFacId(int fac) {
     int i;
     for(i = 0; facilitynames[i].c_name != NULL; i++) 
          if(facilitynames[i].c_val == fac)
               return facilitynames[i].c_name;
     return NULL;
}
int sysLogFac(char *name) {
     int i;
     for(i = 0; facilitynames[i].c_name != NULL; i++) 
          if(strcmp(name,facilitynames[i].c_name) == 0)
               return facilitynames[i].c_val;
     return -1;
}

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