From c7c8bd43dbd46626f8ed09a3f14f5a0a21347edc Mon Sep 17 00:00:00 2001
From: Warren Dukes <warren.dukes@gmail.com>
Date: Wed, 19 Jul 2006 18:56:54 +0000
Subject: bind to ipv4 and ipv6 addresses for "any"

git-svn-id: https://svn.musicpd.org/mpd/trunk@4407 09075e82-0dd4-0310-85a5-a0d7c8717e4f
---
 src/listen.c | 133 +++++++++++++++++++++++++++++++----------------------------
 1 file changed, 69 insertions(+), 64 deletions(-)

(limited to 'src')

diff --git a/src/listen.c b/src/listen.c
index 8575e2bec..379dfb8d5 100644
--- a/src/listen.c
+++ b/src/listen.c
@@ -43,13 +43,72 @@
 int * listenSockets = NULL;
 int numberOfListenSockets = 0;
 
-static int establishListen(unsigned int port, ConfigParam * param) {
-	int allowReuse = ALLOW_REUSE;
+static void establishListen(unsigned int port,
+			    struct sockaddr * addrp, 
+			    socklen_t addrlen) 
+{
+	int pf;
 	int sock;
+	int allowReuse = ALLOW_REUSE;
+
+	switch(addrp->sa_family) {
+	case AF_INET:
+		pf = PF_INET;
+		break;
+#ifdef HAVE_IPV6
+	case AF_INET6:
+		pf = PF_INET6;
+		break;
+#endif
+	case AF_UNIX:
+		pf = PF_UNIX;
+		break;
+	default:
+		ERROR("unknown address family: %i\n",addrp->sa_family);
+		exit(EXIT_FAILURE);
+	}
+
+	if((sock = socket(pf,SOCK_STREAM,0)) < 0) {
+		ERROR("socket < 0\n");
+		exit(EXIT_FAILURE);
+	}
+
+	if(fcntl(sock, F_SETFL ,fcntl(sock, F_GETFL) | O_NONBLOCK) < 0) {
+		ERROR("problems setting nonblocking on listen socket: %s\n",
+				strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(char *)&allowReuse,
+			sizeof(allowReuse))<0) 
+	{
+		ERROR("problems setsockopt'ing: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	if(bind(sock,addrp,addrlen)<0) {
+		ERROR("unable to bind port %u", port);
+		ERROR(": %s\n", strerror(errno));
+		ERROR("maybe MPD is still running?\n");
+		exit(EXIT_FAILURE);
+	}
+	
+	if(listen(sock,5)<0) {
+		ERROR("problems listen'ing: %s\n", strerror(errno));
+		exit(EXIT_FAILURE);
+	}
+
+	numberOfListenSockets++;
+	listenSockets = 
+	    realloc(listenSockets,sizeof(int)*numberOfListenSockets);
+
+	listenSockets[numberOfListenSockets-1] = sock;
+}
+
+static void parseListenConfigParam(unsigned int port, ConfigParam * param) {
 	struct sockaddr * addrp;
 	socklen_t addrlen;
 	struct sockaddr_in sin;
-	int pf;
 #ifdef HAVE_IPV6
 	struct sockaddr_in6 sin6;
 
@@ -68,14 +127,13 @@ static int establishListen(unsigned int port, ConfigParam * param) {
 			sin6.sin6_addr = in6addr_any;
 			addrp = (struct sockaddr *) &sin6;
 			addrlen = sizeof(struct sockaddr_in6);
+			establishListen(port, addrp, addrlen);
 		}
-		else 
 #endif
-		{
-			sin.sin_addr.s_addr = INADDR_ANY;
-			addrp = (struct sockaddr *) &sin;
-			addrlen = sizeof(struct sockaddr_in);
-		}
+		sin.sin_addr.s_addr = INADDR_ANY;
+		addrp = (struct sockaddr *) &sin;
+		addrlen = sizeof(struct sockaddr_in);
+		establishListen(port, addrp, addrlen);
 	}
 	else {
 		struct hostent * he;
@@ -112,57 +170,9 @@ static int establishListen(unsigned int port, ConfigParam * param) {
 					param->value, param->line);
 			exit(EXIT_FAILURE);
 		}
-	}
 
-	switch(addrp->sa_family) {
-	case AF_INET:
-		pf = PF_INET;
-		break;
-#ifdef HAVE_IPV6
-	case AF_INET6:
-		pf = PF_INET6;
-		break;
-#endif
-	case AF_UNIX:
-		pf = PF_UNIX;
-		break;
-	default:
-		ERROR("unknown address family: %i\n",addrp->sa_family);
-		exit(EXIT_FAILURE);
+		establishListen(port, addrp, addrlen);
 	}
-
-	if((sock = socket(pf,SOCK_STREAM,0)) < 0) {
-		ERROR("socket < 0\n");
-		exit(EXIT_FAILURE);
-	}
-
-	if(fcntl(sock, F_SETFL ,fcntl(sock, F_GETFL) | O_NONBLOCK) < 0) {
-		ERROR("problems setting nonblocking on listen socket: %s\n",
-				strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-
-	if(setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(char *)&allowReuse,
-			sizeof(allowReuse))<0) 
-	{
-		ERROR("problems setsockopt'ing: %s\n", strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-
-	if(bind(sock,addrp,addrlen)<0) {
-		ERROR("unable to bind port %u", port);
-		if(param) ERROR(" (for address at line %i)", param->line);
-		ERROR(": %s\n", strerror(errno));
-		ERROR("maybe MPD is still running?\n");
-		exit(EXIT_FAILURE);
-	}
-	
-	if(listen(sock,5)<0) {
-		ERROR("problems listen'ing: %s\n", strerror(errno));
-		exit(EXIT_FAILURE);
-	}
-
-	return sock;
 }
 
 void listenOnPort(void) {
@@ -186,12 +196,7 @@ void listenOnPort(void) {
 	}
 
 	do {
-		numberOfListenSockets++;
-		listenSockets = realloc(listenSockets,
-					sizeof(int)*numberOfListenSockets);
-
-		listenSockets[numberOfListenSockets-1] = 
-				establishListen(port, param);
+	    parseListenConfigParam(port, param);
 	} while ((param = getNextConfigParam(CONF_BIND_TO_ADDRESS, param)));
 }
 
-- 
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