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changeset 11558:93f83100b0bb draft

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(svn r15924) -Codechange: replace NetworkResolveHost with something less AF dependant.
author rubidium <rubidium@openttd.org>
date Fri, 03 Apr 2009 09:07:16 +0000
parents 39f9d11c789a
children 61f34aed5412
files src/network/core/address.cpp src/network/core/address.h src/network/core/host.cpp src/network/core/host.h
diffstat 4 files changed, 94 insertions(+), 114 deletions(-) [+]
line wrap: on
line diff
--- a/src/network/core/address.cpp
+++ b/src/network/core/address.cpp
@@ -56,24 +56,31 @@
 	return buf;
 }
 
+/**
+ * Helper function to resolve without opening a socket.
+ * @param runp information about the socket to try not
+ * @return the opened socket or INVALID_SOCKET
+ */
+static SOCKET ResolveLoopProc(addrinfo *runp)
+{
+	/* We just want the first 'entry', so return a valid socket. */
+	return !INVALID_SOCKET;
+}
+
 const sockaddr_storage *NetworkAddress::GetAddress()
 {
-	if (!this->IsResolved()) {
-		((struct sockaddr_in *)&this->address)->sin_addr.s_addr = NetworkResolveHost(this->hostname);
-		this->address_length = sizeof(sockaddr);
-	}
+	if (!this->IsResolved()) this->Resolve(this->address.ss_family, 0, AI_ADDRCONFIG, ResolveLoopProc);
 	return &this->address;
 }
 
-SOCKET NetworkAddress::Connect()
+SOCKET NetworkAddress::Resolve(int family, int socktype, int flags, LoopProc func)
 {
-	DEBUG(net, 1, "Connecting to %s", this->GetAddressAsString());
-
 	struct addrinfo *ai;
 	struct addrinfo hints;
 	memset(&hints, 0, sizeof (hints));
-	hints.ai_flags    = AI_ADDRCONFIG;
-	hints.ai_socktype = SOCK_STREAM;
+	hints.ai_family   = family;
+	hints.ai_flags    = flags;
+	hints.ai_socktype = socktype;
 
 	/* The port needs to be a string. Six is enough to contain all characters + '\0'. */
 	char port_name[6];
@@ -87,20 +94,9 @@
 
 	SOCKET sock = INVALID_SOCKET;
 	for (struct addrinfo *runp = ai; runp != NULL; runp = runp->ai_next) {
-		sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
+		sock = func(runp);
 		if (sock == INVALID_SOCKET) continue;
 
-		if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
-
-		if (connect(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
-			closesocket(sock);
-			sock = INVALID_SOCKET;
-			continue;
-		}
-
-		/* Connection succeeded */
-		if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
-
 		this->address_length = runp->ai_addrlen;
 		assert(sizeof(this->address) >= runp->ai_addrlen);
 		memcpy(&this->address, runp->ai_addr, runp->ai_addrlen);
@@ -111,60 +107,75 @@
 	return sock;
 }
 
-SOCKET NetworkAddress::Listen(int family, int socktype)
+/**
+ * Helper function to resolve a connected socket.
+ * @param runp information about the socket to try not
+ * @return the opened socket or INVALID_SOCKET
+ */
+static SOCKET ConnectLoopProc(addrinfo *runp)
 {
-	struct addrinfo *ai;
-	struct addrinfo hints;
-	memset(&hints, 0, sizeof (hints));
-	hints.ai_family   = family;
-	hints.ai_flags    = AI_ADDRCONFIG | AI_PASSIVE;
-	hints.ai_socktype = socktype;
-
-	/* The port needs to be a string. Six is enough to contain all characters + '\0'. */
-	char port_name[6] = { '0' };
-	seprintf(port_name, lastof(port_name), "%u", this->GetPort());
-
-	int e = getaddrinfo(this->GetHostname(), port_name, &hints, &ai);
-	if (e != 0) {
-		DEBUG(net, 0, "getaddrinfo failed: %s", gai_strerror(e));
+	SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
+	if (sock == INVALID_SOCKET) {
+		DEBUG(net, 1, "Could not create socket: %s", strerror(errno));
 		return INVALID_SOCKET;
 	}
 
-	SOCKET sock = INVALID_SOCKET;
-	for (struct addrinfo *runp = ai; runp != NULL; runp = runp->ai_next) {
-		sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
-		if (sock == INVALID_SOCKET) {
-			DEBUG(net, 1, "could not create socket: %s", strerror(errno));
-			continue;
-		}
-
-		if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
-
-		if (bind(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
-			DEBUG(net, 1, "could not bind: %s", strerror(errno));
-			closesocket(sock);
-			sock = INVALID_SOCKET;
-			continue;
-		}
+	if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
 
-		if (socktype != SOCK_DGRAM && listen(sock, 1) != 0) {
-			DEBUG(net, 1, "could not listen: %s", strerror(errno));
-			closesocket(sock);
-			sock = INVALID_SOCKET;
-			continue;
-		}
+	if (connect(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
+		DEBUG(net, 1, "Could not connect socket: %s", strerror(errno));
+		return INVALID_SOCKET;
+	}
 
-		/* Connection succeeded */
-		if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
-
-		this->address_length = runp->ai_addrlen;
-		assert(sizeof(this->address) >= runp->ai_addrlen);
-		memcpy(&this->address, runp->ai_addr, runp->ai_addrlen);
-		break;
-	}
-	freeaddrinfo (ai);
+	/* Connection succeeded */
+	if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
 
 	return sock;
 }
 
+SOCKET NetworkAddress::Connect()
+{
+	DEBUG(net, 1, "Connecting to %s", this->GetAddressAsString());
+
+	return this->Resolve(0, SOCK_STREAM, AI_ADDRCONFIG, ConnectLoopProc);
+}
+
+/**
+ * Helper function to resolve a listening.
+ * @param runp information about the socket to try not
+ * @return the opened socket or INVALID_SOCKET
+ */
+static SOCKET ListenLoopProc(addrinfo *runp)
+{
+	SOCKET sock = socket(runp->ai_family, runp->ai_socktype, runp->ai_protocol);
+	if (sock == INVALID_SOCKET) {
+		DEBUG(net, 1, "Could not create socket: %s", strerror(errno));
+		return INVALID_SOCKET;
+	}
+
+	if (!SetNoDelay(sock)) DEBUG(net, 1, "Setting TCP_NODELAY failed");
+
+	if (bind(sock, runp->ai_addr, runp->ai_addrlen) != 0) {
+		DEBUG(net, 1, "Could not bind: %s", strerror(errno));
+		closesocket(sock);
+		return INVALID_SOCKET;
+	}
+
+	if (runp->ai_socktype != SOCK_DGRAM && listen(sock, 1) != 0) {
+		DEBUG(net, 1, "Could not listen: %s", strerror(errno));
+		closesocket(sock);
+		return INVALID_SOCKET;
+	}
+
+	/* Connection succeeded */
+	if (!SetNonBlocking(sock)) DEBUG(net, 0, "Setting non-blocking mode failed");
+
+	return sock;
+}
+
+SOCKET NetworkAddress::Listen(int family, int socktype)
+{
+	return this->Resolve(family, socktype, AI_ADDRCONFIG | AI_PASSIVE, ListenLoopProc);
+}
+
 #endif /* ENABLE_NETWORK */
--- a/src/network/core/address.h
+++ b/src/network/core/address.h
@@ -20,6 +20,22 @@
 	size_t address_length;    ///< The length of the resolved address
 	sockaddr_storage address; ///< The resolved address
 
+	/**
+	 * Helper function to resolve something to a socket.
+	 * @param runp information about the socket to try not
+	 * @return the opened socket or INVALID_SOCKET
+	 */
+	typedef SOCKET (*LoopProc)(addrinfo *runp);
+
+	/**
+	 * Resolve this address into a socket
+	 * @param family the type of 'protocol' (IPv4, IPv6)
+	 * @param socktype the type of socket (TCP, UDP, etc)
+	 * @param flags the flags to send to getaddrinfo
+	 * @param func the inner working while looping over the address info
+	 * @return the resolved socket or INVALID_SOCKET.
+	 */
+	SOCKET Resolve(int family, int socktype, int flags, LoopProc func);
 public:
 	/**
 	 * Create a network address based on a resolved IP and port
--- a/src/network/core/host.cpp
+++ b/src/network/core/host.cpp
@@ -204,50 +204,4 @@
 	}
 }
 
-
-/**
- * Resolve a hostname to an ip.
- * @param hsotname the hostname to resolve
- * @return the IP belonging to that hostname, or 0 on failure.
- */
-uint32 NetworkResolveHost(const char *hostname)
-{
-	/* Is this an IP address? */
-	in_addr_t ip = inet_addr(hostname);
-
-	if (ip != INADDR_NONE) return ip;
-
-	/* No, try to resolve the name */
-	struct in_addr addr;
-#if !defined(PSP)
-	struct hostent *he = gethostbyname(hostname);
-	if (he == NULL) {
-		DEBUG(net, 0, "[NET] Cannot resolve %s", hostname);
-		return 0;
-	}
-	addr = *(struct in_addr *)he->h_addr_list[0];
-#else
-	int rid = -1;
-	char buf[1024];
-
-	/* Create a resolver */
-	if (sceNetResolverCreate(&rid, buf, sizeof(buf)) < 0) {
-		DEBUG(net, 0, "[NET] Error connecting resolver");
-		return 0;
-	}
-
-	/* Try to resolve the name */
-	if (sceNetResolverStartNtoA(rid, hostname, &addr, 2, 3) < 0) {
-		DEBUG(net, 0, "[NET] Cannot resolve %s", hostname);
-		sceNetResolverDelete(rid);
-		return 0;
-	}
-	sceNetResolverDelete(rid);
-#endif /* PSP */
-
-	DEBUG(net, 1, "[NET] Resolved %s to %s", hostname, inet_ntoa(addr));
-	ip = addr.s_addr;
-	return ip;
-}
-
 #endif /* ENABLE_NETWORK */
--- a/src/network/core/host.h
+++ b/src/network/core/host.h
@@ -7,6 +7,5 @@
 #ifndef NETWORK_CORE_HOST_H
 
 void NetworkFindBroadcastIPs(uint32 *broadcast, int limit);
-uint32 NetworkResolveHost(const char *hostname);
 
 #endif /* NETWORK_CORE_HOST_H */