Creating tag for the release of asterisk-1.2.22-netsec

git-svn-id: http://svn.digium.com/svn/asterisk/tags/1.2.22-netsec@75464 f38db490-d61c-443f-a65b-d21fe96a405b

4 files changed, 19 insertions, 5 deletions

diff --git a/channels/chan_iax2.c b/channels/chan_iax2.c
index 5bc629fa3..dacc20e17 100644
--- a/channels/chan_iax2.c
+++ b/channels/chan_iax2.c
@@ -4020,7 +4020,9 @@ static int iax2_send(struct chan_iax2_pvt *pvt, struct ast_frame *f, unsigned in
 	int sendmini=0;
 	unsigned int lastsent;
 	unsigned int fts;
-		
+
+	frb.fr2.afdatalen = sizeof(frb.buffer);
+
 	if (!pvt) {
 		ast_log(LOG_WARNING, "No private structure for packet?\n");
 		return -1;
@@ -6435,7 +6437,8 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 	/* allocate an iax_frame with 4096 bytes of data buffer */
 	fr = alloca(sizeof(*fr) + 4096);
 	fr->callno = 0;
-	
+	fr->afdatalen = 4096; /* From alloca() above */
+
 	res = recvfrom(fd, buf, sizeof(buf), 0,(struct sockaddr *) &sin, &len);
 	if (res < 0) {
 		if (errno != ECONNREFUSED)
@@ -6811,6 +6814,7 @@ static int socket_read(int *id, int fd, short events, void *cbdata)
 					return 1;
 				}
 				f.data = NULL;
+				f.datalen = 0;
 			} else
 				f.data = buf + sizeof(*fh);
 		} else {
diff --git a/channels/chan_skinny.c b/channels/chan_skinny.c
index 3cfd9d646..c9d3f8854 100644
--- a/channels/chan_skinny.c
+++ b/channels/chan_skinny.c
@@ -2862,7 +2862,7 @@ static int get_input(struct skinnysession *s)
 			return -1;
 		}
 		dlen = letohl(*(int *)s->inbuf);
-		if (dlen < 0) {
+		if (dlen < 4) {
 			ast_log(LOG_WARNING, "Skinny Client sent invalid data.\n");
 			return -1;
 		}
diff --git a/channels/iax2-parser.c b/channels/iax2-parser.c
index 3ef80a39c..6db037455 100644
--- a/channels/iax2-parser.c
+++ b/channels/iax2-parser.c
@@ -904,13 +904,20 @@ void iax_frame_wrap(struct iax_frame *fr, struct ast_frame *f)
 	fr->af.delivery.tv_usec = 0;
 	fr->af.data = fr->afdata;
 	if (fr->af.datalen) {
+		size_t copy_len = fr->af.datalen;
+		if (copy_len > fr->afdatalen) {
+			ast_log(LOG_ERROR, "Losing frame data because destination buffer size '%d' bytes not big enough for '%d' bytes in the frame\n",
+				(int) fr->afdatalen, (int) fr->af.datalen);
+			copy_len = fr->afdatalen;
+		}
 #if __BYTE_ORDER == __LITTLE_ENDIAN
 		/* We need to byte-swap slinear samples from network byte order */
 		if ((fr->af.frametype == AST_FRAME_VOICE) && (fr->af.subclass == AST_FORMAT_SLINEAR)) {
-			ast_swapcopy_samples(fr->af.data, f->data, fr->af.samples);
+			/* 2 bytes / sample for SLINEAR */
+			ast_swapcopy_samples(fr->af.data, f->data, copy_len / 2);
 		} else
 #endif
-		memcpy(fr->af.data, f->data, fr->af.datalen);
+			memcpy(fr->af.data, f->data, copy_len);
 	}
 }
 
@@ -919,6 +926,7 @@ struct iax_frame *iax_frame_new(int direction, int datalen)
 	struct iax_frame *fr;
 	fr = malloc((int)sizeof(struct iax_frame) + datalen);
 	if (fr) {
+		fr->afdatalen = datalen;
 		fr->direction = direction;
 		fr->retrans = -1;
 		frames++;
diff --git a/channels/iax2-parser.h b/channels/iax2-parser.h
index dd90682c2..50e04538e 100644
--- a/channels/iax2-parser.h
+++ b/channels/iax2-parser.h
@@ -119,6 +119,8 @@ struct iax_frame {
 	struct iax_frame *prev;
 	/* Actual, isolated frame header */
 	struct ast_frame af;
+	/* Amount of data _allocated_ for afdata */
+	size_t afdatalen;
 	unsigned char unused[AST_FRIENDLY_OFFSET];
 	unsigned char afdata[0];	/* Data for frame */
 };