Update libsrtp to version 2.0

srtp/test/rtp.c

-/*
- * rtp.c
- *
- * library functions for the real-time transport protocol
- *
- * David A. McGrew
- * Cisco Systems, Inc.
- */
-
-/*
- *      
- * Copyright (c) 2001-2006, 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.
- *
- */
-
-#include "rtp_priv.h"
-
-#include <stdio.h>
-#include <string.h>
-
-#include <sys/types.h>
-#ifdef HAVE_SYS_SOCKET_H
-# include <sys/socket.h>
-#endif
-
-#define PRINT_DEBUG    0    /* set to 1 to print out debugging data */
-#define VERBOSE_DEBUG  0    /* set to 1 to print out more data      */
-
-int
-rtp_sendto(rtp_sender_t sender, const void* msg, int len) {
-  int octets_sent;
-  err_status_t stat;
-  int pkt_len = len + RTP_HEADER_LEN;
-
-  /* marshal data */
-  strncpy(sender->message.body, msg, len);
-  
-  /* update header */
-  sender->message.header.seq = ntohs(sender->message.header.seq) + 1;
-  sender->message.header.seq = htons(sender->message.header.seq);
-  sender->message.header.ts = ntohl(sender->message.header.ts) + 1;
-  sender->message.header.ts = htonl(sender->message.header.ts);
-  
-  /* apply srtp */
-  stat = srtp_protect(sender->srtp_ctx, &sender->message.header, &pkt_len);
-  if (stat) {
-#if PRINT_DEBUG
-    fprintf(stderr, "error: srtp protection failed with code %d\n", stat);
-#endif
-    return -1;
-  }
-#if VERBOSE_DEBUG
-  srtp_print_packet(&sender->message.header, pkt_len);
-#endif
-  octets_sent = sendto(sender->socket, (void*)&sender->message,
-                       pkt_len, 0, (struct sockaddr *)&sender->addr,
-                       sizeof (struct sockaddr_in));
-
-  if (octets_sent != pkt_len) {
-#if PRINT_DEBUG
-    fprintf(stderr, "error: couldn't send message %s", (char *)msg);
-    perror("");
-#endif
-  }
-
-  return octets_sent;
-}
-
-int
-rtp_recvfrom(rtp_receiver_t receiver, void *msg, int *len) {
-  int octets_recvd;
-  err_status_t stat;
-  
-  octets_recvd = recvfrom(receiver->socket, (void *)&receiver->message,
-                         *len, 0, (struct sockaddr *) NULL, 0);
-
-  if (octets_recvd == -1) {
-    *len = 0;
-    return -1;
-  }
-
-  /* verify rtp header */
-  if (receiver->message.header.version != 2) {
-    *len = 0;
-    return -1;
-  }
-
-#if PRINT_DEBUG
-  fprintf(stderr, "%d octets received from SSRC %u\n",
-          octets_recvd, receiver->message.header.ssrc);
-#endif
-#if VERBOSE_DEBUG
-  srtp_print_packet(&receiver->message.header, octets_recvd);
-#endif
-
-  /* apply srtp */
-  stat = srtp_unprotect(receiver->srtp_ctx,
-                        &receiver->message.header, &octets_recvd);
-  if (stat) {
-    fprintf(stderr,
-            "error: srtp unprotection failed with code %d%s\n", stat,
-            stat == err_status_replay_fail ? " (replay check failed)" :
-            stat == err_status_auth_fail ? " (auth check failed)" : "");
-    return -1;
-  }
-  strncpy(msg, receiver->message.body, octets_recvd);
-  
-  return octets_recvd;
-}
-
-int
-rtp_sender_init(rtp_sender_t sender, 
-                int sock, 
-                struct sockaddr_in addr,
-                unsigned int ssrc) {
-
-  /* set header values */
-  sender->message.header.ssrc    = htonl(ssrc);
-  sender->message.header.ts      = 0;
-  sender->message.header.seq     = (uint16_t) rand();
-  sender->message.header.m       = 0;
-  sender->message.header.pt      = 0x1;
-  sender->message.header.version = 2;
-  sender->message.header.p       = 0;
-  sender->message.header.x       = 0;
-  sender->message.header.cc      = 0;
-
-  /* set other stuff */
-  sender->socket = sock;
-  sender->addr = addr;
-
-  return 0;
-}
-
-int
-rtp_receiver_init(rtp_receiver_t rcvr, 
-                  int sock, 
-                  struct sockaddr_in addr,
-                  unsigned int ssrc) {
-  
-  /* set header values */
-  rcvr->message.header.ssrc    = htonl(ssrc);
-  rcvr->message.header.ts      = 0;
-  rcvr->message.header.seq     = 0;
-  rcvr->message.header.m       = 0;
-  rcvr->message.header.pt      = 0x1;
-  rcvr->message.header.version = 2;
-  rcvr->message.header.p       = 0;
-  rcvr->message.header.x       = 0;
-  rcvr->message.header.cc      = 0;
-
-  /* set other stuff */
-  rcvr->socket = sock;
-  rcvr->addr = addr;
-
-  return 0;
-}
-
-int
-rtp_sender_init_srtp(rtp_sender_t sender, const srtp_policy_t *policy) {
-  return srtp_create(&sender->srtp_ctx, policy);
-}
-
-int
-rtp_sender_deinit_srtp(rtp_sender_t sender) {
-  return srtp_dealloc(sender->srtp_ctx);
-}
-
-int
-rtp_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy) {
-  return srtp_create(&sender->srtp_ctx, policy);
-}
-
-int
-rtp_receiver_deinit_srtp(rtp_receiver_t sender) {
-  return srtp_dealloc(sender->srtp_ctx);
-}
-
-rtp_sender_t 
-rtp_sender_alloc(void) {
-  return (rtp_sender_t)malloc(sizeof(rtp_sender_ctx_t));
-}
-
-void
-rtp_sender_dealloc(rtp_sender_t rtp_ctx) {
-  free(rtp_ctx);
-}
-
-rtp_receiver_t 
-rtp_receiver_alloc(void) {
-  return (rtp_receiver_t)malloc(sizeof(rtp_receiver_ctx_t));
-}
-
-void
-rtp_receiver_dealloc(rtp_receiver_t rtp_ctx) {
-  free(rtp_ctx);
-}