/*
* err . c
*
* error status reporting functions
*
* David A . McGrew
* Cisco Systems , Inc .
*/
/*
*
* Copyright ( c ) 2001 - 2017 Cisco Systems , Inc .
* All rights reserved .
*
* Redistribution and use in source and binary forms , with or without
* modification , are permitted provided that the following conditions
* are met :
*
* Redistributions of source code must retain the above copyright
* notice , this list of conditions and the following disclaimer .
*
* Redistributions in binary form must reproduce the above
* copyright notice , this list of conditions and the following
* disclaimer in the documentation and / or other materials provided
* with the distribution .
*
* Neither the name of the Cisco Systems , Inc . nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission .
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* " AS IS " AND ANY EXPRESS OR IMPLIED WARRANTIES , INCLUDING , BUT NOT
* LIMITED TO , THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED . IN NO EVENT SHALL THE
* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT ,
* INDIRECT , INCIDENTAL , SPECIAL , EXEMPLARY , OR CONSEQUENTIAL DAMAGES
* ( INCLUDING , BUT NOT LIMITED TO , PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES ; LOSS OF USE , DATA , OR PROFITS ; OR BUSINESS INTERRUPTION )
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY , WHETHER IN CONTRACT ,
* STRICT LIABILITY , OR TORT ( INCLUDING NEGLIGENCE OR OTHERWISE )
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE , EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE .
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include "err.h"
#include "datatypes.h"
#include <string.h>
/* srtp_err_file is the FILE to which errors are reported */
static FILE *srtp_err_file = NULL;
srtp_err_status_t srtp_err_reporting_init(void )
{
#ifdef ERR_REPORTING_STDOUT
srtp_err_file = stdout;
#elif defined (ERR_REPORTING_FILE)
/* open file for error reporting */
srtp_err_file = fopen(ERR_REPORTING_FILE, "w" );
if (srtp_err_file == NULL) {
return srtp_err_status_init_fail;
}
#endif
return srtp_err_status_ok;
}
static srtp_err_report_handler_func_t *srtp_err_report_handler = NULL;
srtp_err_status_t srtp_install_err_report_handler(
srtp_err_report_handler_func_t func)
{
srtp_err_report_handler = func;
return srtp_err_status_ok;
}
void srtp_err_report(srtp_err_reporting_level_t level, const char *format, ...)
{
char msg[512 ];
va_list args;
if (srtp_err_file != NULL) {
va_start(args, format);
vfprintf(srtp_err_file, format, args);
va_end(args);
}
if (srtp_err_report_handler != NULL) {
va_start(args, format);
if (vsnprintf(msg, sizeof (msg), format, args) > 0 ) {
/* strip trailing \n, callback should not have one */
size_t l = strlen(msg);
if (l && msg[l - 1 ] == '\n' ) {
msg[l - 1 ] = '\0' ;
}
srtp_err_report_handler(level, msg);
/*
* NOTE , need to be carefull , there is a potential that
* octet_string_set_to_zero ( ) could
* call srtp_err_report ( ) in the future , leading to recursion
*/
octet_string_set_to_zero(msg, sizeof (msg));
}
va_end(args);
}
}
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