src/log/ModSyslog.cc

   1 /*
   2  * DEBUG: section 50    Log file handling
   3  * AUTHOR: Duane Wessels
   4  *
   5  * SQUID Web Proxy Cache          http://www.squid-cache.org/
   6  * ----------------------------------------------------------
   7  *
   8  *  Squid is the result of efforts by numerous individuals from
   9  *  the Internet community; see the CONTRIBUTORS file for full
  10  *  details.   Many organizations have provided support for Squid's
  11  *  development; see the SPONSORS file for full details.  Squid is
  12  *  Copyrighted (C) 2001 by the Regents of the University of
  13  *  California; see the COPYRIGHT file for full details.  Squid
  14  *  incorporates software developed and/or copyrighted by other
  15  *  sources; see the CREDITS file for full details.
  16  *
  17  *  This program is free software; you can redistribute it and/or modify
  18  *  it under the terms of the GNU General Public License as published by
  19  *  the Free Software Foundation; either version 2 of the License, or
  20  *  (at your option) any later version.
  21  *
  22  *  This program is distributed in the hope that it will be useful,
  23  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  *  GNU General Public License for more details.
  26  *
  27  *  You should have received a copy of the GNU General Public License
  28  *  along with this program; if not, write to the Free Software
  29  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
  30  *
  31  */
  32
  33 #include "squid.h"
  34 #include "Debug.h"
  35
  36 #if HAVE_SYSLOG
  37
  38 #include "log/File.h"
  39 #include "log/ModSyslog.h"
  40
  41 /* Define LOG_AUTHPRIV as LOG_AUTH on systems still using the old deprecated LOG_AUTH */
  42 #if !defined(LOG_AUTHPRIV) && defined(LOG_AUTH)
  43 #define LOG_AUTHPRIV LOG_AUTH
  44 #endif
  45
  46 typedef struct {
  47     const char *name;
  48     int value;
  49 } syslog_symbol_t;
  50
  51 static int
  52 syslog_ntoa(const char *s)
  53 {
  54 #define syslog_symbol(a) #a, a
  55     static syslog_symbol_t symbols[] = {
  56 #ifdef LOG_AUTHPRIV
  57         {syslog_symbol(LOG_AUTHPRIV)},
  58 #endif
  59 #ifdef LOG_DAEMON
  60         {syslog_symbol(LOG_DAEMON)},
  61 #endif
  62 #ifdef LOG_LOCAL0
  63         {syslog_symbol(LOG_LOCAL0)},
  64 #endif
  65 #ifdef LOG_LOCAL1
  66         {syslog_symbol(LOG_LOCAL1)},
  67 #endif
  68 #ifdef LOG_LOCAL2
  69         {syslog_symbol(LOG_LOCAL2)},
  70 #endif
  71 #ifdef LOG_LOCAL3
  72         {syslog_symbol(LOG_LOCAL3)},
  73 #endif
  74 #ifdef LOG_LOCAL4
  75         {syslog_symbol(LOG_LOCAL4)},
  76 #endif
  77 #ifdef LOG_LOCAL5
  78         {syslog_symbol(LOG_LOCAL5)},
  79 #endif
  80 #ifdef LOG_LOCAL6
  81         {syslog_symbol(LOG_LOCAL6)},
  82 #endif
  83 #ifdef LOG_LOCAL7
  84         {syslog_symbol(LOG_LOCAL7)},
  85 #endif
  86 #ifdef LOG_USER
  87         {syslog_symbol(LOG_USER)},
  88 #endif
  89 #ifdef LOG_ERR
  90         {syslog_symbol(LOG_ERR)},
  91 #endif
  92 #ifdef LOG_WARNING
  93         {syslog_symbol(LOG_WARNING)},
  94 #endif
  95 #ifdef LOG_NOTICE
  96         {syslog_symbol(LOG_NOTICE)},
  97 #endif
  98 #ifdef LOG_INFO
  99         {syslog_symbol(LOG_INFO)},
 100 #endif
 101 #ifdef LOG_DEBUG
 102         {syslog_symbol(LOG_DEBUG)},
 103 #endif
 104         {NULL, 0}
 105     };
 106     syslog_symbol_t *p;
 107
 108     for (p = symbols; p->name != NULL; ++p)
 109         if (!strcmp(s, p->name) || !strcasecmp(s, p->name + 4))
 110             return p->value;
 111
 112     debugs(1, DBG_IMPORTANT, "Unknown syslog facility/priority '" << s << "'");
 113     return 0;
 114 }
 115
 116 typedef struct {
 117     int syslog_priority;
 118 } l_syslog_t;
 119
 120 #define PRIORITY_MASK (LOG_ERR | LOG_WARNING | LOG_NOTICE | LOG_INFO | LOG_DEBUG)
 121
 122 static void
 123 logfile_mod_syslog_writeline(Logfile * lf, const char *buf, size_t len)
 124 {
 125     l_syslog_t *ll = (l_syslog_t *) lf->data;
 126     syslog(ll->syslog_priority, "%s", (char *) buf);
 127 }
 128
 129 static void
 130 logfile_mod_syslog_linestart(Logfile * lf)
 131 {
 132 }
 133
 134 static void
 135 logfile_mod_syslog_lineend(Logfile * lf)
 136 {
 137 }
 138
 139 static void
 140 logfile_mod_syslog_flush(Logfile * lf)
 141 {
 142 }
 143
 144 static void
 145 logfile_mod_syslog_rotate(Logfile * lf)
 146 {
 147 }
 148
 149 static void
 150 logfile_mod_syslog_close(Logfile * lf)
 151 {
 152     xfree(lf->data);
 153     lf->data = NULL;
 154 }
 155
 156 /*
 157  * This code expects the path to be syslog:<priority>
 158  */
 159 int
 160 logfile_mod_syslog_open(Logfile * lf, const char *path, size_t bufsz, int fatal_flag)
 161 {
 162     lf->f_close = logfile_mod_syslog_close;
 163     lf->f_linewrite = logfile_mod_syslog_writeline;
 164     lf->f_linestart = logfile_mod_syslog_linestart;
 165     lf->f_lineend = logfile_mod_syslog_lineend;
 166     lf->f_flush = logfile_mod_syslog_flush;
 167     lf->f_rotate = logfile_mod_syslog_rotate;
 168
 169     l_syslog_t *ll = static_cast<l_syslog_t*>(xcalloc(1, sizeof(*ll)));
 170     lf->data = ll;
 171
 172     ll->syslog_priority = LOG_INFO;
 173
 174     if (path[6] != '\0') {
 175         char *priority = xstrdup(path);
 176         char *facility = (char *) strchr(priority, '.');
 177         if (!facility)
 178             facility = (char *) strchr(priority, '|');
 179         if (facility) {
 180             *facility = '\0';
 181             ++facility;
 182             ll->syslog_priority |= syslog_ntoa(facility);
 183         }
 184         ll->syslog_priority |= syslog_ntoa(priority);
 185         xfree(priority);
 186         if ((ll->syslog_priority & PRIORITY_MASK) == 0)
 187             ll->syslog_priority |= LOG_INFO;
 188     }
 189
 190     return 1;
 191 }
 192 #endif