//============================================================ // // sdlsocket.c - SDL socket (inet) access functions // // Copyright (c) 1996-2013, Nicola Salmoria and the MAME Team. // Visit http://mamedev.org for licensing and usage restrictions. // // SDLMAME by Olivier Galibert and R. Belmont // //============================================================ #include #include #include #include #ifndef SDLMAME_WIN32 #include #include #include #include #include #include #endif #include #define NO_MEM_TRACKING #include "emu.h" #include "sdlfile.h" const char *sdlfile_socket_identifier = "socket."; /* Checks whether the path is a socket specification. A valid socket specification has the format "socket." host ":" port. Host may be simple or fully qualified. Port must be between 1 and 65535. */ bool sdl_check_socket_path(const char *path) { #ifndef SDLMAME_WIN32 if (strlen(sdlfile_socket_identifier) > 0 && strncmp(path, sdlfile_socket_identifier, strlen(sdlfile_socket_identifier)) == 0 && strchr(path, ':') != NULL) return true; #endif return false; } file_error sdl_open_socket(const char *path, UINT32 openflags, osd_file **file, UINT64 *filesize) { #ifndef SDLMAME_WIN32 char hostname[256]; struct hostent *localhost; struct sockaddr_in sai; int flag = 1; int port; sscanf( path+strlen(sdlfile_socket_identifier), "%255[^:]:%d", hostname, &port ); // printf("Connecting to server '%s' on port '%d'\n", hostname, port); if (((*file)->socket = socket(AF_INET, SOCK_STREAM, 0)) == -1) { return FILERR_ACCESS_DENIED; } if (setsockopt((*file)->socket, IPPROTO_TCP, TCP_NODELAY, (char *)&flag, sizeof(flag)) == -1) { return FILERR_ACCESS_DENIED; } localhost = gethostbyname(hostname); memset(&sai, 0, sizeof(sai)); sai.sin_family = AF_INET; sai.sin_port = htons(port); sai.sin_addr = *((struct in_addr *)localhost->h_addr); // listening socket support if (openflags & OPEN_FLAG_CREATE) { // printf("Listening for client at '%s' on port '%d'\n", hostname, port); // bind socket... if (bind((*file)->socket, (struct sockaddr *)&sai, sizeof(struct sockaddr)) == -1) { return FILERR_ACCESS_DENIED; } // start to listen... if (listen((*file)->socket, 1) == -1) { return FILERR_ACCESS_DENIED; } // mark socket as "listening" (*file)->handle = 0; *filesize = 0; return FILERR_NONE; } // printf("Connecting to server '%s' on port '%d'\n", hostname, port); if (connect((*file)->socket, (struct sockaddr *)&sai, sizeof(struct sockaddr)) == -1) { return FILERR_ACCESS_DENIED; } *filesize = 0; (*file)->handle = -1; #endif return FILERR_NONE; } file_error sdl_read_socket(osd_file *file, void *buffer, UINT64 offset, UINT32 count, UINT32 *actual) { #ifndef SDLMAME_WIN32 ssize_t result; char line[80]; struct timeval timeout; fd_set readfds; FD_ZERO(&readfds); FD_SET(file->socket, &readfds); timeout.tv_sec = timeout.tv_usec = 0; if (select(file->socket + 1, &readfds, NULL, NULL, &timeout) < 0) { sprintf(line, "%s : %s : %d ", __func__, __FILE__, __LINE__); perror(line); return error_to_file_error(errno); } else if (FD_ISSET(file->socket, &readfds)) { if (file->handle == -1) { // connected socket result = read(file->socket, buffer, count); } else { // listening socket int AcceptSocket; AcceptSocket = accept(file->socket, NULL, NULL); if (AcceptSocket < 0) { return FILERR_FAILURE; } close(file->socket); file->socket = AcceptSocket; file->handle = -1; if (actual != NULL ) { *actual = 0; } return FILERR_NONE; } } else { return FILERR_FAILURE; } if (result < 0) { return error_to_file_error(errno); } if (actual != NULL ) { *actual = result; } #endif return FILERR_NONE; } file_error sdl_write_socket(osd_file *file, const void *buffer, UINT64 offset, UINT32 count, UINT32 *actual) { #ifndef SDLMAME_WIN32 ssize_t result; result = write(file->socket, buffer, count); if (result < 0) { return error_to_file_error(errno); } if (actual != NULL ) { *actual = result; } #endif return FILERR_NONE; } file_error sdl_close_socket(osd_file *file) { #ifndef SDLMAME_WIN32 close(file->socket); osd_free(file); #endif return FILERR_NONE; }