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      1 /*
      2  * err.c
      3  *
      4  * error status reporting functions
      5  *
      6  * David A. McGrew
      7  * Cisco Systems, Inc.
      8  */
      9 /*
     10  *
     11  * Copyright(c) 2001-2006 Cisco Systems, Inc.
     12  * All rights reserved.
     13  *
     14  * Redistribution and use in source and binary forms, with or without
     15  * modification, are permitted provided that the following conditions
     16  * are met:
     17  *
     18  *   Redistributions of source code must retain the above copyright
     19  *   notice, this list of conditions and the following disclaimer.
     20  *
     21  *   Redistributions in binary form must reproduce the above
     22  *   copyright notice, this list of conditions and the following
     23  *   disclaimer in the documentation and/or other materials provided
     24  *   with the distribution.
     25  *
     26  *   Neither the name of the Cisco Systems, Inc. nor the names of its
     27  *   contributors may be used to endorse or promote products derived
     28  *   from this software without specific prior written permission.
     29  *
     30  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     31  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     32  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
     33  * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
     34  * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
     35  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
     36  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
     37  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     38  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     39  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     40  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     41  * OF THE POSSIBILITY OF SUCH DAMAGE.
     42  *
     43  */
     44 
     45 #include "err.h"
     46 
     47 #ifdef ERR_REPORTING_SYSLOG
     48 # ifdef HAVE_SYSLOG_H
     49 #  include <syslog.h>
     50 # endif
     51 #endif
     52 
     53 
     54 /*  err_level reflects the level of errors that are reported  */
     55 
     56 err_reporting_level_t err_level = err_level_none;
     57 
     58 #ifdef SRTP_KERNEL_LINUX
     59 err_status_t
     60 err_reporting_init(char *ident) {
     61 
     62   return err_status_ok;
     63 }
     64 
     65 #else /* SRTP_KERNEL_LINUX */
     66 
     67 /* err_file is the FILE to which errors are reported */
     68 
     69 static FILE *err_file = NULL;
     70 
     71 err_status_t
     72 err_reporting_init(char *ident) {
     73 #ifdef ERR_REPORTING_SYSLOG
     74   openlog(ident, LOG_PID, LOG_AUTHPRIV);
     75 #endif
     76 
     77   /*
     78    * Believe it or not, openlog doesn't return an error on failure.
     79    * But then, neither does the syslog() call...
     80    */
     81 
     82 #ifdef ERR_REPORTING_STDOUT
     83   err_file = stdout;
     84 #elif defined(USE_ERR_REPORTING_FILE)
     85   /* open file for error reporting */
     86   err_file = fopen(ERR_REPORTING_FILE, "w");
     87   if (err_file == NULL)
     88     return err_status_init_fail;
     89 #endif
     90 
     91   return err_status_ok;
     92 }
     93 
     94 void
     95 err_report(int priority, char *format, ...) {
     96   va_list args;
     97 
     98   if (priority <= err_level) {
     99 
    100     va_start(args, format);
    101     if (err_file != NULL) {
    102       vfprintf(err_file, format, args);
    103 	  /*      fprintf(err_file, "\n"); */
    104     }
    105 #ifdef ERR_REPORTING_SYSLOG
    106     if (1) { /* FIXME: Make this a runtime option. */
    107       int syslogpri;
    108 
    109       switch (priority) {
    110       case err_level_emergency:
    111 	syslogpri = LOG_EMERG;
    112 	break;
    113       case err_level_alert:
    114 	syslogpri = LOG_ALERT;
    115 	break;
    116       case err_level_critical:
    117 	syslogpri = LOG_CRIT;
    118 	break;
    119       case err_level_error:
    120 	syslogpri = LOG_ERR;
    121 	break;
    122       case err_level_warning:
    123 	syslogpri = LOG_WARNING;
    124 	break;
    125       case err_level_notice:
    126 	syslogpri = LOG_NOTICE;
    127 	break;
    128       case err_level_info:
    129 	syslogpri = LOG_INFO;
    130 	break;
    131       case err_level_debug:
    132       case err_level_none:
    133       default:
    134 	syslogpri = LOG_DEBUG;
    135 	break;
    136       }
    137 
    138       vsyslog(syslogpri, format, args);
    139 #endif
    140     va_end(args);
    141   }
    142 }
    143 #endif /* SRTP_KERNEL_LINUX */
    144 
    145 void
    146 err_reporting_set_level(err_reporting_level_t lvl) {
    147   err_level = lvl;
    148 }
    149