bfdbb8f260
This commit updates all authorship and copyright information to include a standard header that references the AUTHORS and CREDITS file. This standard header was written by the Debian legal team at the request of Franck Joncourt.
221 lines
6.7 KiB
C
221 lines
6.7 KiB
C
/*
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*****************************************************************************
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*
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* File: log_msg.c
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*
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* Purpose: General logging routine that can write to syslog and/or stderr
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* and can take varibale number of args.
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*
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* Fwknop is developed primarily by the people listed in the file 'AUTHORS'.
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* Copyright (C) 2009–2014 fwknop developers and contributors. For a full
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* list of contributors, see the file 'CREDITS'.
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*
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* License (GNU General Public License):
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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* USA
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*
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*****************************************************************************
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*/
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#include "fwknopd_common.h"
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#include "utils.h"
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#include "log_msg.h"
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/* The default log facility (can be overridden via config file directive).
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*/
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static int syslog_fac = LOG_DAEMON;
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/* This value is or'ed with the log level on all logging calls. This allows
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* for force log to stderr instead of syslog simply be setting this to the
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* appropriate value (which is done at init_logging().
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*/
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static int static_log_flag = LOG_STDERR_ONLY;
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/* The name to use for ID in log messages. This defaults to fwknopd.
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*/
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static char *log_name = NULL;
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/* The value of the default verbosity used by the log module */
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static int verbosity = LOG_DEFAULT_VERBOSITY;
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/* Free resources allocated for logging.
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*/
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void
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free_logging(void)
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{
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if(log_name != NULL)
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free(log_name);
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}
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/* Initialize logging sets the name used for syslog.
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*/
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void
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init_logging(fko_srv_options_t *opts) {
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char *my_name = NULL;
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int is_syslog = 0;
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/* In case this is a re-init.
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*/
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free_logging();
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/* Allocate memory for the log_name and set the my_name to point to the
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* appropriate name. The name should already be set in the config struct
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* but if it is not, fallback to the default as defined by 'MY_NAME'.
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*/
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if(opts->config[CONF_SYSLOG_IDENTITY] != NULL
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&& opts->config[CONF_SYSLOG_IDENTITY][0] != '\0')
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{
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my_name = opts->config[CONF_SYSLOG_IDENTITY];
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log_name = malloc(strlen(opts->config[CONF_SYSLOG_IDENTITY])+1);
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is_syslog = 1;
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}
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else
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{
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my_name = (char*)&MY_NAME;
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log_name = malloc(strlen(MY_NAME)+1);
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}
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if(log_name == NULL)
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{
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fprintf(stderr, "Memory allocation error setting log_name!\n");
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clean_exit(opts, NO_FW_CLEANUP, EXIT_FAILURE);
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}
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/* Set our name.
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*/
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if (is_syslog)
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strlcpy(log_name, my_name, strlen(opts->config[CONF_SYSLOG_IDENTITY])+1);
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else
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strlcpy(log_name, my_name, strlen(MY_NAME)+1);
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static_log_flag = LOG_SYSLOG_ONLY;
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/* If we are running in the foreground or performing firewall operations,
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* all logging will go to stderr.
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*/
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if(opts->foreground != 0
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|| opts->fw_flush != 0
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|| opts->fw_list != 0
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|| opts->fw_list_all != 0)
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static_log_flag = LOG_STDERR_ONLY;
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/* If the user forces syslog using --syslog-enable, we remove the
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* LOG_WITHOUT_SYSLOG flag. It means all messages will go through syslog */
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if (opts->syslog_enable != 0)
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static_log_flag &= ~LOG_WITHOUT_SYSLOG;
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/* Parse the log facility as specified in the config struct. If, for some
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* reason, it is not, fac will already be set to LOG_DAEMON.
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*/
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if(opts->config[CONF_SYSLOG_FACILITY] != NULL
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&& opts->config[CONF_SYSLOG_FACILITY][0] != '\0')
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{
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if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_DAEMON"))
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syslog_fac = LOG_DAEMON;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL0"))
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syslog_fac = LOG_LOCAL0;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL1"))
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syslog_fac = LOG_LOCAL1;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL2"))
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syslog_fac = LOG_LOCAL2;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL3"))
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syslog_fac = LOG_LOCAL3;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL4"))
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syslog_fac = LOG_LOCAL4;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL5"))
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syslog_fac = LOG_LOCAL5;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL6"))
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syslog_fac = LOG_LOCAL6;
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else if(!strcasecmp(opts->config[CONF_SYSLOG_FACILITY], "LOG_LOCAL7"))
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syslog_fac = LOG_LOCAL7;
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}
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verbosity = LOG_DEFAULT_VERBOSITY + opts->verbose;
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}
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/* Set the log facility value.
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*/
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void
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set_log_facility(int fac)
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{
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syslog_fac = fac;
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}
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/* Syslog message function. It uses default set at intialization, and also
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* takes variable args to accomodate printf-like formatting and expansion.
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*/
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void
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log_msg(int level, char* msg, ...)
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{
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va_list ap, apse;
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/* Make sure the level is in the right range */
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if ((level & LOG_VERBOSITY_MASK) > verbosity)
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return;
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va_start(ap, msg);
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level |= static_log_flag;
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/* Print msg to stderr if the level was or'ed with LOG_STDERR
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*/
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if(LOG_STDERR & level)
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{
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/* Need to make a copy of our va_list so we don't screw
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* up the message going to syslog after we print it to stderr.
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*/
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va_copy(apse, ap);
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vfprintf(stderr, msg, apse);
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fprintf(stderr, "\n");
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fflush(stderr);
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va_end(apse);
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}
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/* If the message has not to be printed to the syslog, we return */
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if (LOG_WITHOUT_SYSLOG & level)
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{
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va_end(ap);
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return;
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}
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/* Remove the static log flags from the level */
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level &= LOG_VERBOSITY_MASK;
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/* Send the message to syslog.
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*/
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openlog(log_name, LOG_PID, syslog_fac);
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vsyslog(level, msg, ap);
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va_end(ap);
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}
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/**
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* Set the verbosity level for the current context of the log module.
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*
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* The verbosity levels used by the module are defined by the syslog module.
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*
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* @param level verbosity level to set (LOG_INFO, LOG_NOTICE ...)
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*/
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void
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log_set_verbosity(int level)
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{
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verbosity = level;
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}
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/***EOF***/
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