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