MT#13895 support binding to a single interface address

iaxmodem.c

@@ -118,6 +118,7 @@ static int window = 1000;		/* u-sec prior to target that we will let audio go */
 static int codec = AST_FORMAT_SLINEAR;	/* negotiated codec */
 
 static int port = 4569;
+static unsigned long interface = 0;
 static int refreshreq = 300;		/* requested refresh */
 static int refresh = 300;		/* negotiated refresh, initialize equal to refreshreq */
 static int codecreq = AST_FORMAT_SLINEAR; /* requested codec */
@@ -341,6 +342,12 @@ setconfigline(char *line)
 	port = atoi(line);
 	printlog(LOG_INFO, "Setting port = %d\n", port);
     }
+    if (strncasecmp(line, "interface", 9) == 0) {
+	line += 9;
+	while (*line == '\t' || *line == ' ') line++;
+	interface = inet_addr(line);
+	printlog(LOG_INFO, "Setting interface = %lu\n", interface);
+    }
     if (strncasecmp(line, "refresh", 7) == 0) {
 	line += 7;
 	while (*line == '\t' || *line == ' ') line++;
@@ -877,8 +884,9 @@ iaxmodem(const char *config, int nondaemon)
     setegid(uucp_gid);
     seteuid(uucp_uid);
     
-    if ((port = iax_init(port) < 0)) {
-	printlog(LOG_ERROR, "Fatal error: failed to initialize iax with port %d\n", port);
+    if ((port = iax_init(port, interface) < 0)) {
+	printlog(LOG_ERROR, "Fatal error: failed to initialize iax with port %d and interface %lu\n",
+			port, interface);
 	cleanup(-1);
     }
     iaxnetfd = iax_get_fd();

lib/libiax2/src/iax-client.h

@@ -138,7 +138,7 @@ extern "C"
 /* Called to initialize IAX structures and sockets.  Returns actual
    portnumber (which it will try preferred portno first, but if not
    take what it can get */
-extern int iax_init(int preferredportno);
+extern int iax_init(int preferredportno, unsigned long interface);
 
 /* Get filedescriptor for IAX to use with select or gtk_input_add */
 extern int iax_get_fd(void);

lib/libiax2/src/iax.c

@@ -911,7 +911,7 @@ void iax_set_jb_target_extra( long value )
 	jb_target_extra = value ;
 }
 
-int iax_init(int preferredportno)
+int iax_init(int preferredportno, unsigned long interface)
 {
 	int portno = preferredportno;
 
@@ -943,7 +943,7 @@ int iax_init(int preferredportno)
 			preferredportno = 0;
 
 		sin.sin_family = AF_INET;
-		sin.sin_addr.s_addr = 0;
+		sin.sin_addr.s_addr = interface;
 		sin.sin_port = htons((short)preferredportno);
 		if (bind(netfd, (struct sockaddr *) &sin, sizeof(sin)) < 0)
 		{

lib/libiax2/src/miniphone.c

@@ -389,7 +389,7 @@ main(int argc, char *argv[])
 		return -1;
 	}
 
-	if ( (port = iax_init(0) < 0)) {
+	if ( (port = iax_init(0, 0) < 0)) {
 		fprintf(stderr, "Fatal error: failed to initialize iax with port %d\n", port);
 		return -1;
 	}

lib/libiax2/src/winiphone.c

@@ -270,7 +270,7 @@ main(int argc, char *argv[])
 	/* initialize the audio in buffer structures */
 	memset(&whin,0,sizeof(whin));
 
-	if ( (port = iax_init(0) < 0)) {
+	if ( (port = iax_init(0, 0) < 0)) {
 		fprintf(stderr, "Fatal error: failed to initialize iax with port %d\n", port);
 		return -1;
 	}