2 * Copyright (C) ARM Limited 2010-2014. All rights reserved.
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
17 #include <netinet/in.h>
27 #define CLOSE_SOCKET(x) closesocket(x)
28 #define SHUTDOWN_RX_TX SD_BOTH
29 #define snprintf _snprintf
31 #define CLOSE_SOCKET(x) close(x)
32 #define SHUTDOWN_RX_TX SHUT_RDWR
35 int socket_cloexec(int domain, int type, int protocol) {
37 return socket(domain, type | SOCK_CLOEXEC, protocol);
39 int sock = socket(domain, type, protocol);
44 int fdf = fcntl(sock, F_GETFD);
45 if ((fdf == -1) || (fcntl(sock, F_SETFD, fdf | FD_CLOEXEC) != 0)) {
54 int accept_cloexec(int sockfd, struct sockaddr *addr, socklen_t *addrlen) {
57 sock = accept4(sockfd, addr, addrlen, SOCK_CLOEXEC);
61 // accept4 with SOCK_CLOEXEC may not work on all kernels, so fallback
63 sock = accept(sockfd, addr, addrlen);
68 int fdf = fcntl(sock, F_GETFD);
69 if ((fdf == -1) || (fcntl(sock, F_SETFD, fdf | FD_CLOEXEC) != 0)) {
77 OlyServerSocket::OlyServerSocket(int port) {
80 if (WSAStartup(0x0202, &wsaData) != 0) {
81 logg->logError(__FILE__, __LINE__, "Windows socket initialization failed");
86 createServerSocket(port);
89 OlySocket::OlySocket(int socketID) : mSocketID(socketID) {
94 #define MIN(A, B) ({ \
95 const __typeof__(A) __a = A; \
96 const __typeof__(B) __b = B; \
97 __a > __b ? __b : __a; \
100 OlyServerSocket::OlyServerSocket(const char* path, const size_t pathSize) {
102 mFDServer = socket_cloexec(PF_UNIX, SOCK_STREAM, 0);
104 logg->logError(__FILE__, __LINE__, "Error creating server socket");
108 // Create sockaddr_in structure, ensuring non-populated fields are zero
109 struct sockaddr_un sockaddr;
110 memset((void*)&sockaddr, 0, sizeof(sockaddr));
111 sockaddr.sun_family = AF_UNIX;
112 memcpy(sockaddr.sun_path, path, MIN(pathSize, sizeof(sockaddr.sun_path)));
113 sockaddr.sun_path[sizeof(sockaddr.sun_path) - 1] = '\0';
115 // Bind the socket to an address
116 if (bind(mFDServer, (const struct sockaddr*)&sockaddr, sizeof(sockaddr)) < 0) {
117 logg->logError(__FILE__, __LINE__, "Binding of server socket failed.");
121 // Listen for connections on this socket
122 if (listen(mFDServer, 1) < 0) {
123 logg->logError(__FILE__, __LINE__, "Listening of server socket failed");
128 int OlySocket::connect(const char* path, const size_t pathSize) {
129 int fd = socket_cloexec(PF_UNIX, SOCK_STREAM, 0);
134 // Create sockaddr_in structure, ensuring non-populated fields are zero
135 struct sockaddr_un sockaddr;
136 memset((void*)&sockaddr, 0, sizeof(sockaddr));
137 sockaddr.sun_family = AF_UNIX;
138 memcpy(sockaddr.sun_path, path, MIN(pathSize, sizeof(sockaddr.sun_path)));
139 sockaddr.sun_path[sizeof(sockaddr.sun_path) - 1] = '\0';
141 if (::connect(fd, (const struct sockaddr*)&sockaddr, sizeof(sockaddr)) < 0) {
151 OlySocket::~OlySocket() {
153 CLOSE_SOCKET(mSocketID);
157 OlyServerSocket::~OlyServerSocket() {
159 CLOSE_SOCKET(mFDServer);
163 void OlySocket::shutdownConnection() {
164 // Shutdown is primarily used to unblock other threads that are blocking on send/receive functions
165 shutdown(mSocketID, SHUTDOWN_RX_TX);
168 void OlySocket::closeSocket() {
169 // Used for closing an accepted socket but keeping the server socket active
171 CLOSE_SOCKET(mSocketID);
176 void OlyServerSocket::closeServerSocket() {
177 if (CLOSE_SOCKET(mFDServer) != 0) {
178 logg->logError(__FILE__, __LINE__, "Failed to close server socket.");
184 void OlyServerSocket::createServerSocket(int port) {
185 int family = AF_INET6;
188 mFDServer = socket_cloexec(PF_INET6, SOCK_STREAM, IPPROTO_TCP);
191 mFDServer = socket_cloexec(PF_INET, SOCK_STREAM, IPPROTO_TCP);
193 logg->logError(__FILE__, __LINE__, "Error creating server socket");
198 // Enable address reuse, another solution would be to create the server socket once and only close it when the object exits
200 if (setsockopt(mFDServer, SOL_SOCKET, SO_REUSEADDR, (const char*)&on, sizeof(on)) != 0) {
201 logg->logError(__FILE__, __LINE__, "Setting server socket options failed");
205 // Create sockaddr_in structure, ensuring non-populated fields are zero
206 struct sockaddr_in6 sockaddr;
207 memset((void*)&sockaddr, 0, sizeof(sockaddr));
208 sockaddr.sin6_family = family;
209 sockaddr.sin6_port = htons(port);
210 sockaddr.sin6_addr = in6addr_any;
212 // Bind the socket to an address
213 if (bind(mFDServer, (const struct sockaddr*)&sockaddr, sizeof(sockaddr)) < 0) {
214 logg->logError(__FILE__, __LINE__, "Binding of server socket failed.\nIs an instance already running?");
218 // Listen for connections on this socket
219 if (listen(mFDServer, 1) < 0) {
220 logg->logError(__FILE__, __LINE__, "Listening of server socket failed");
225 // mSocketID is always set to the most recently accepted connection
226 // The user of this class should maintain the different socket connections, e.g. by forking the process
227 int OlyServerSocket::acceptConnection() {
229 if (mFDServer <= 0) {
230 logg->logError(__FILE__, __LINE__, "Attempting multiple connections on a single connection server socket or attempting to accept on a client socket");
234 // Accept a connection, note that this call blocks until a client connects
235 socketID = accept_cloexec(mFDServer, NULL, NULL);
237 logg->logError(__FILE__, __LINE__, "Socket acceptance failed");
243 void OlySocket::send(const char* buffer, int size) {
244 if (size <= 0 || buffer == NULL) {
249 int n = ::send(mSocketID, buffer, size, 0);
251 logg->logError(__FILE__, __LINE__, "Socket send error");
259 // Returns the number of bytes received
260 int OlySocket::receive(char* buffer, int size) {
261 if (size <= 0 || buffer == NULL) {
265 int bytes = recv(mSocketID, buffer, size, 0);
267 logg->logError(__FILE__, __LINE__, "Socket receive error");
269 } else if (bytes == 0) {
270 logg->logMessage("Socket disconnected");
276 // Receive exactly size bytes of data. Note, this function will block until all bytes are received
277 int OlySocket::receiveNBytes(char* buffer, int size) {
279 while (size > 0 && buffer != NULL) {
280 bytes = recv(mSocketID, buffer, size, 0);
282 logg->logError(__FILE__, __LINE__, "Socket receive error");
284 } else if (bytes == 0) {
285 logg->logMessage("Socket disconnected");
294 // Receive data until a carriage return, line feed, or null is encountered, or the buffer fills
295 int OlySocket::receiveString(char* buffer, int size) {
296 int bytes_received = 0;
303 while (!found && bytes_received < size) {
304 // Receive a single character
305 int bytes = recv(mSocketID, &buffer[bytes_received], 1, 0);
307 logg->logError(__FILE__, __LINE__, "Socket receive error");
309 } else if (bytes == 0) {
310 logg->logMessage("Socket disconnected");
314 // Replace carriage returns and line feeds with zero
315 if (buffer[bytes_received] == '\n' || buffer[bytes_received] == '\r' || buffer[bytes_received] == '\0') {
316 buffer[bytes_received] = '\0';
323 return bytes_received;