extensions/ulogd_SYSLOG.c

   1 /* ulogd_SYSLOG.c, Version $Revision: 6433 $
   2  *
   3  * ulogd output target for real syslog() logging
   4  *
   5  * This target produces a syslog entries identical to the LOG target.
   6  *
   7  * (C) 2003 by Harald Welte <laforge@gnumonks.org>
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License version 2
  11  *  as published by the Free Software Foundation
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, write to the Free Software
  20  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  *
  22  * $Id: ulogd_SYSLOG.c 6433 2006-01-25 11:22:03Z /C=DE/ST=Berlin/L=Berlin/O=Netfilter Project/OU=Development/CN=laforge/emailAddress=laforge@netfilter.org $
  23  *
  24  */
  25
  26 #include <stdio.h>
  27 #include <stdlib.h>
  28 #include <unistd.h>
  29 #include <string.h>
  30 #include <syslog.h>
  31 #include <ulogd/ulogd.h>
  32 #include <ulogd/conffile.h>
  33 #include "printpkt.h"
  34
  35 #ifndef SYSLOG_FACILITY_DEFAULT
  36 #define SYSLOG_FACILITY_DEFAULT "LOG_KERN"
  37 #endif
  38
  39 #ifndef SYSLOG_LEVEL_DEFAULT
  40 #define SYSLOG_LEVEL_DEFAULT "LOG_NOTICE"
  41 #endif
  42
  43 static config_entry_t facility_ce = {
  44         .key = "facility",
  45         .type = CONFIG_TYPE_STRING,
  46         .options = CONFIG_OPT_NONE,
  47         .u = { .string = SYSLOG_FACILITY_DEFAULT }
  48 };
  49
  50 static config_entry_t level_ce = {
  51         .next = &facility_ce,
  52         .key = "level",
  53         .type = CONFIG_TYPE_STRING,
  54         .options = CONFIG_OPT_NONE,
  55         .u = { .string = SYSLOG_LEVEL_DEFAULT }
  56 };
  57
  58 static int syslog_level, syslog_facility;
  59
  60 static int _output_syslog(ulog_iret_t *res)
  61 {
  62         static char buf[4096];
  63
  64         printpkt_print(res, buf, 0);
  65         syslog(syslog_level|syslog_facility, buf);
  66
  67         return 0;
  68 }
  69
  70 static int syslog_init(void)
  71 {
  72         /* FIXME: error handling */
  73         config_parse_file("SYSLOG", &level_ce);
  74
  75         if (!strcmp(facility_ce.u.string, "LOG_DAEMON"))
  76                 syslog_facility = LOG_DAEMON;
  77         else if (!strcmp(facility_ce.u.string, "LOG_KERN"))
  78                 syslog_facility = LOG_KERN;
  79         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL0"))
  80                 syslog_facility = LOG_LOCAL0;
  81         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL1"))
  82                 syslog_facility = LOG_LOCAL1;
  83         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL2"))
  84                 syslog_facility = LOG_LOCAL2;
  85         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL3"))
  86                 syslog_facility = LOG_LOCAL3;
  87         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL4"))
  88                 syslog_facility = LOG_LOCAL4;
  89         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL5"))
  90                 syslog_facility = LOG_LOCAL5;
  91         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL6"))
  92                 syslog_facility = LOG_LOCAL6;
  93         else if (!strcmp(facility_ce.u.string, "LOG_LOCAL7"))
  94                 syslog_facility = LOG_LOCAL7;
  95         else if (!strcmp(facility_ce.u.string, "LOG_USER"))
  96                 syslog_facility = LOG_USER;
  97         else {
  98                 ulogd_log(ULOGD_FATAL, "unknown facility '%s'\n",
  99                           facility_ce.u.string);
 100                 exit(2);
 101         }
 102
 103         if (!strcmp(level_ce.u.string, "LOG_EMERG"))
 104                 syslog_level = LOG_EMERG;
 105         else if (!strcmp(level_ce.u.string, "LOG_ALERT"))
 106                 syslog_level = LOG_ALERT;
 107         else if (!strcmp(level_ce.u.string, "LOG_CRIT"))
 108                 syslog_level = LOG_CRIT;
 109         else if (!strcmp(level_ce.u.string, "LOG_ERR"))
 110                 syslog_level = LOG_ERR;
 111         else if (!strcmp(level_ce.u.string, "LOG_WARNING"))
 112                 syslog_level = LOG_WARNING;
 113         else if (!strcmp(level_ce.u.string, "LOG_NOTICE"))
 114                 syslog_level = LOG_NOTICE;
 115         else if (!strcmp(level_ce.u.string, "LOG_INFO"))
 116                 syslog_level = LOG_INFO;
 117         else if (!strcmp(level_ce.u.string, "LOG_DEBUG"))
 118                 syslog_level = LOG_DEBUG;
 119         else {
 120                 ulogd_log(ULOGD_FATAL, "unknown level '%s'\n",
 121                           level_ce.u.string);
 122                 exit(2);
 123         }
 124
 125         openlog("ulogd", LOG_NDELAY|LOG_PID, syslog_facility);
 126
 127         return 0;
 128 }
 129
 130 static void syslog_fini(void)
 131 {
 132         closelog();
 133 }
 134
 135 static ulog_output_t syslog_op = {
 136         .name = "syslog",
 137         .init = &syslog_init,
 138         .fini = &syslog_fini,
 139         .output = &_output_syslog,
 140 };
 141
 142
 143 void _init(void)
 144 {
 145         if (printpkt_init())
 146                 ulogd_log(ULOGD_ERROR, "can't resolve all keyhash id's\n");
 147
 148         register_output(&syslog_op);
 149 }