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-rw-r--r--srtp/test/rtp.c167
1 files changed, 167 insertions, 0 deletions
diff --git a/srtp/test/rtp.c b/srtp/test/rtp.c
new file mode 100644
index 0000000..69968f3
--- /dev/null
+++ b/srtp/test/rtp.c
@@ -0,0 +1,167 @@
+/*
+ * rtp.c
+ *
+ * library functions for the real-time transport protocol
+ *
+ * David A. McGrew
+ * Cisco Systems, Inc.
+ */
+
+
+#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 */
+
+unsigned 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;
+}
+
+unsigned 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);
+
+ /* 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 socket,
+ 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 = socket;
+ sender->addr = addr;
+
+ return 0;
+}
+
+int
+rtp_receiver_init(rtp_receiver_t rcvr,
+ int socket,
+ 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 = socket;
+ 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_receiver_init_srtp(rtp_receiver_t sender, const srtp_policy_t *policy) {
+ return srtp_create(&sender->srtp_ctx, policy);
+}
+
+rtp_sender_t
+rtp_sender_alloc() {
+ return (rtp_sender_t)malloc(sizeof(rtp_sender_ctx_t));
+}
+
+rtp_receiver_t
+rtp_receiver_alloc() {
+ return (rtp_receiver_t)malloc(sizeof(rtp_receiver_ctx_t));
+}