FS-9785: upgrade libsrtp to 2.1

libs/srtp/crypto/kernel/err.c

@@ -7,26 +7,26 @@
  * Cisco Systems, Inc.
  */
 /*
- *	
- * Copyright(c) 2001-2006 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
@@ -42,107 +42,65 @@
  *
  */
 
+#ifdef HAVE_CONFIG_H
+    #include <config.h>
+#endif
+
 #include "err.h"
+#include "datatypes.h"
+#include <string.h>
 
-#ifdef ERR_REPORTING_SYSLOG
-# ifdef HAVE_SYSLOG_H
-#  include <syslog.h>
-# endif
-#endif
+/* srtp_err_file is the FILE to which errors are reported */
 
+static FILE *srtp_err_file = NULL;
 
-/*  err_level reflects the level of errors that are reported  */
-
-err_reporting_level_t err_level = err_level_none;
-
-#ifdef SRTP_KERNEL_LINUX
-err_status_t
-err_reporting_init(char *ident) {
-
-  return err_status_ok;
-}
-
-#else /* SRTP_KERNEL_LINUX */	
-
-/* err_file is the FILE to which errors are reported */
-
-static FILE *err_file = NULL;
-
-err_status_t
-err_reporting_init(char *ident) {
-#ifdef ERR_REPORTING_SYSLOG
-  openlog(ident, LOG_PID, LOG_AUTHPRIV);
-#endif
-  
-  /*
-   * Believe it or not, openlog doesn't return an error on failure.
-   * But then, neither does the syslog() call...
-   */
-
+srtp_err_status_t srtp_err_reporting_init ()
+{
 #ifdef ERR_REPORTING_STDOUT
-  err_file = stdout;
-#elif defined(USE_ERR_REPORTING_FILE)
-  /* open file for error reporting */
-  err_file = fopen(ERR_REPORTING_FILE, "w");
-  if (err_file == NULL)
-    return err_status_init_fail;
-#endif
-
-  return err_status_ok;
-}
-
-void
-err_report(int priority, char *format, ...) {
-  va_list args;
-
-  if (priority <= err_level) {
-
-    va_start(args, format);
-    if (err_file != NULL) {
-      vfprintf(err_file, format, args);
-	  /*      fprintf(err_file, "\n"); */
+    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;
     }
-#ifdef ERR_REPORTING_SYSLOG
-    if (1) { /* FIXME: Make this a runtime option. */
-      int syslogpri;
-
-      switch (priority) {
-      case err_level_emergency:
-	syslogpri = LOG_EMERG;
-	break;
-      case err_level_alert:
-	syslogpri = LOG_ALERT;
-	break;
-      case err_level_critical:
-	syslogpri = LOG_CRIT;
-	break;
-      case err_level_error:
-	syslogpri = LOG_ERR;
-	break;
-      case err_level_warning:
-	syslogpri = LOG_WARNING;
-	break;
-      case err_level_notice:
-	syslogpri = LOG_NOTICE;
-	break;
-      case err_level_info:
-	syslogpri = LOG_INFO;
-	break;
-      case err_level_debug:
-      case err_level_none:
-      default:
-	syslogpri = LOG_DEBUG;
-	break;
-      }
-
-      vsyslog(syslogpri, format, args);
 #endif
-    va_end(args);
-  }
-}
-#endif /* SRTP_KERNEL_LINUX */	
 
-void
-err_reporting_set_level(err_reporting_level_t lvl) { 
-  err_level = lvl;
+    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, ...)
+{
+    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);
+        char msg[512];
+        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);
+    }
 }