Add error-checking for valid IP

Author: andy5995

source/shared_lib/sources/platform/posix/socket.cpp

@@ -2413,8 +2413,10 @@ void ServerSocket::bind(int port) {
 		addr.sin_addr.s_addr= inet_addr(this->bindSpecificAddress.c_str());
 	}
 	else {
-		addr.sin_addr.s_addr= this->bindAddress == "" ? INADDR_ANY : inet_addr(this->bindAddress.c_str());
+    if (inet_pton(AF_INET, this->bindAddress == "" ? INADDR_ANY : this->bindAddress.c_str(), &addr.sin_addr.s_addr) <= 0)
+      perror("inet_pton:");
 	}
+
 	addr.sin_port= htons(port);
 	addr.sin_zero[0] = 0;
 
@@ -2425,14 +2427,14 @@ void ServerSocket::bind(int port) {
 #else
 	int opt_result = setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *)&val, sizeof(val));
 #endif
+  char szBuf[8096] = {};
 
 	int err= ::bind(sock, reinterpret_cast<sockaddr*>(&addr), sizeof(addr));
 	if(err < 0) {
-	    char szBuf[8096]="";
-	    snprintf(szBuf, 8096,"In [%s::%s] Error binding socket sock = " PLATFORM_SOCKET_FORMAT_TYPE ", address [%s] port = %d err = %d, error = %s opt_result = %d\n",__FILE__,__FUNCTION__,sock,this->bindSpecificAddress.c_str(),port,err,getLastSocketErrorFormattedText().c_str(),opt_result);
+	    snprintf(szBuf, sizeof szBuf,"In [%s::%s] Error binding socket sock = " PLATFORM_SOCKET_FORMAT_TYPE ", address [%s] port = %d err = %d, error = %s opt_result = %d\n",__FILE__,__FUNCTION__,sock,this->bindSpecificAddress.c_str(),port,err,getLastSocketErrorFormattedText().c_str(),opt_result);
 	    if(SystemFlags::getSystemSettingType(SystemFlags::debugNetwork).enabled) SystemFlags::OutputDebug(SystemFlags::debugNetwork,"%s",szBuf);
 
-	    snprintf(szBuf, 8096,"Error binding socket sock = " PLATFORM_SOCKET_FORMAT_TYPE ", address [%s] port = %d err = %d, error = %s\n",sock,this->bindSpecificAddress.c_str(),port,err,getLastSocketErrorFormattedText().c_str());
+	    snprintf(szBuf, sizeof szBuf,"Error binding socket sock = " PLATFORM_SOCKET_FORMAT_TYPE ", address [%s] port = %d err = %d, error = %s\n",sock,this->bindSpecificAddress.c_str(),port,err,getLastSocketErrorFormattedText().c_str());
 	    throw megaglest_runtime_error(szBuf);
 	}
 	portBound = true;