Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 1 | #include "private-libwebsockets.h" |
| 2 | |
| 3 | unsigned long long |
Andy Green | bfaea95 | 2014-03-31 11:01:32 +0800 | [diff] [blame] | 4 | time_in_microseconds() |
| 5 | { |
Andy Green | bfaea95 | 2014-03-31 11:01:32 +0800 | [diff] [blame] | 6 | #define DELTA_EPOCH_IN_MICROSECS 11644473600000000ULL |
| 7 | FILETIME filetime; |
| 8 | ULARGE_INTEGER datetime; |
| 9 | |
| 10 | #ifdef _WIN32_WCE |
| 11 | GetCurrentFT(&filetime); |
| 12 | #else |
| 13 | GetSystemTimeAsFileTime(&filetime); |
| 14 | #endif |
| 15 | |
| 16 | /* |
| 17 | * As per Windows documentation for FILETIME, copy the resulting FILETIME structure to a |
| 18 | * ULARGE_INTEGER structure using memcpy (using memcpy instead of direct assignment can |
| 19 | * prevent alignment faults on 64-bit Windows). |
| 20 | */ |
| 21 | memcpy(&datetime, &filetime, sizeof(datetime)); |
| 22 | |
| 23 | /* Windows file times are in 100s of nanoseconds. */ |
| 24 | return (datetime.QuadPart - DELTA_EPOCH_IN_MICROSECS) / 10; |
| 25 | } |
| 26 | |
| 27 | #ifdef _WIN32_WCE |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 28 | time_t time(time_t *t) |
Andy Green | bfaea95 | 2014-03-31 11:01:32 +0800 | [diff] [blame] | 29 | { |
| 30 | time_t ret = time_in_microseconds() / 1000000; |
| 31 | *t = ret; |
| 32 | return ret; |
| 33 | } |
| 34 | #endif |
| 35 | |
| 36 | LWS_VISIBLE int libwebsockets_get_random(struct libwebsocket_context *context, |
| 37 | void *buf, int len) |
| 38 | { |
| 39 | int n; |
| 40 | char *p = (char *)buf; |
| 41 | |
| 42 | for (n = 0; n < len; n++) |
| 43 | p[n] = (unsigned char)rand(); |
| 44 | |
| 45 | return n; |
| 46 | } |
| 47 | |
| 48 | LWS_VISIBLE int lws_send_pipe_choked(struct libwebsocket *wsi) |
| 49 | { |
| 50 | return wsi->sock_send_blocking; |
| 51 | } |
| 52 | |
| 53 | static int lws_poll_listen_fd(struct libwebsocket_pollfd *fd) |
| 54 | { |
| 55 | fd_set readfds; |
| 56 | struct timeval tv = { 0, 0 }; |
| 57 | |
| 58 | assert(fd->events == LWS_POLLIN); |
| 59 | |
| 60 | FD_ZERO(&readfds); |
| 61 | FD_SET(fd->fd, &readfds); |
| 62 | |
| 63 | return select(fd->fd + 1, &readfds, NULL, NULL, &tv); |
| 64 | } |
| 65 | |
| 66 | /** |
| 67 | * libwebsocket_cancel_service() - Cancel servicing of pending websocket activity |
| 68 | * @context: Websocket context |
| 69 | * |
| 70 | * This function let a call to libwebsocket_service() waiting for a timeout |
| 71 | * immediately return. |
| 72 | */ |
| 73 | LWS_VISIBLE void |
| 74 | libwebsocket_cancel_service(struct libwebsocket_context *context) |
| 75 | { |
| 76 | WSASetEvent(context->events[0]); |
| 77 | } |
| 78 | |
| 79 | LWS_VISIBLE void lwsl_emit_syslog(int level, const char *line) |
| 80 | { |
| 81 | lwsl_emit_stderr(level, line); |
| 82 | } |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 83 | |
| 84 | LWS_VISIBLE int |
| 85 | lws_plat_service(struct libwebsocket_context *context, int timeout_ms) |
| 86 | { |
| 87 | int n; |
| 88 | int i; |
| 89 | DWORD ev; |
| 90 | WSANETWORKEVENTS networkevents; |
| 91 | struct libwebsocket_pollfd *pfd; |
| 92 | |
| 93 | /* stay dead once we are dead */ |
| 94 | |
| 95 | if (context == NULL) |
| 96 | return 1; |
| 97 | |
| 98 | context->service_tid = context->protocols[0].callback(context, NULL, |
| 99 | LWS_CALLBACK_GET_THREAD_ID, NULL, NULL, 0); |
| 100 | |
| 101 | for (i = 0; i < context->fds_count; ++i) { |
| 102 | pfd = &context->fds[i]; |
| 103 | if (pfd->fd == context->listen_service_fd) |
| 104 | continue; |
| 105 | |
| 106 | if (pfd->events & LWS_POLLOUT) { |
| 107 | if (context->lws_lookup[pfd->fd]->sock_send_blocking) |
| 108 | continue; |
| 109 | pfd->revents = LWS_POLLOUT; |
| 110 | n = libwebsocket_service_fd(context, pfd); |
| 111 | if (n < 0) |
| 112 | return n; |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | ev = WSAWaitForMultipleEvents(context->fds_count + 1, |
| 117 | context->events, FALSE, timeout_ms, FALSE); |
| 118 | context->service_tid = 0; |
| 119 | |
| 120 | if (ev == WSA_WAIT_TIMEOUT) { |
| 121 | libwebsocket_service_fd(context, NULL); |
| 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | if (ev == WSA_WAIT_EVENT_0) { |
| 126 | WSAResetEvent(context->events[0]); |
| 127 | return 0; |
| 128 | } |
| 129 | |
| 130 | if (ev < WSA_WAIT_EVENT_0 || ev > WSA_WAIT_EVENT_0 + context->fds_count) |
| 131 | return -1; |
| 132 | |
| 133 | pfd = &context->fds[ev - WSA_WAIT_EVENT_0 - 1]; |
| 134 | |
| 135 | if (WSAEnumNetworkEvents(pfd->fd, |
| 136 | context->events[ev - WSA_WAIT_EVENT_0], |
| 137 | &networkevents) == SOCKET_ERROR) { |
| 138 | lwsl_err("WSAEnumNetworkEvents() failed with error %d\n", |
| 139 | LWS_ERRNO); |
| 140 | return -1; |
| 141 | } |
| 142 | |
| 143 | pfd->revents = networkevents.lNetworkEvents; |
| 144 | |
| 145 | if (pfd->revents & LWS_POLLOUT) |
| 146 | context->lws_lookup[pfd->fd]->sock_send_blocking = FALSE; |
| 147 | |
| 148 | return libwebsocket_service_fd(context, pfd); |
| 149 | } |
| 150 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 151 | LWS_VISIBLE int |
| 152 | lws_plat_set_socket_options(struct libwebsocket_context *context, int fd) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 153 | { |
| 154 | int optval = 1; |
| 155 | socklen_t optlen = sizeof(optval); |
| 156 | u_long optl = 1; |
| 157 | DWORD dwBytesRet; |
| 158 | struct tcp_keepalive alive; |
| 159 | |
| 160 | if (context->ka_time) { |
| 161 | /* enable keepalive on this socket */ |
| 162 | optval = 1; |
| 163 | if (setsockopt(fd, SOL_SOCKET, SO_KEEPALIVE, |
| 164 | (const void *)&optval, optlen) < 0) |
| 165 | return 1; |
| 166 | |
| 167 | alive.onoff = TRUE; |
| 168 | alive.keepalivetime = context->ka_time; |
| 169 | alive.keepaliveinterval = context->ka_interval; |
| 170 | |
| 171 | if (WSAIoctl(fd, SIO_KEEPALIVE_VALS, &alive, sizeof(alive), |
| 172 | NULL, 0, &dwBytesRet, NULL, NULL)) |
| 173 | return 1; |
| 174 | } |
| 175 | |
| 176 | /* Disable Nagle */ |
| 177 | optval = 1; |
| 178 | tcp_proto = getprotobyname("TCP"); |
| 179 | setsockopt(fd, tcp_proto->p_proto, TCP_NODELAY, &optval, optlen); |
| 180 | |
| 181 | /* We are nonblocking... */ |
| 182 | ioctlsocket(fd, FIONBIO, &optl); |
| 183 | |
| 184 | return 0; |
| 185 | } |
| 186 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 187 | LWS_VISIBLE void |
| 188 | lws_plat_drop_app_privileges(struct lws_context_creation_info *info) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 189 | { |
| 190 | } |
| 191 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 192 | LWS_VISIBLE int |
| 193 | lws_plat_init_fd_tables(struct libwebsocket_context *context) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 194 | { |
| 195 | context->events = (WSAEVENT *)malloc(sizeof(WSAEVENT) * |
| 196 | (context->max_fds + 1)); |
| 197 | if (context->events == NULL) { |
| 198 | lwsl_err("Unable to allocate events array for %d connections\n", |
| 199 | context->max_fds); |
| 200 | return 1; |
| 201 | } |
| 202 | |
| 203 | context->fds_count = 0; |
| 204 | context->events[0] = WSACreateEvent(); |
| 205 | |
| 206 | context->fd_random = 0; |
| 207 | |
| 208 | return 0; |
| 209 | } |
| 210 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 211 | LWS_VISIBLE int |
| 212 | lws_plat_context_early_init(void) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 213 | { |
| 214 | WORD wVersionRequested; |
| 215 | WSADATA wsaData; |
| 216 | int err; |
| 217 | |
| 218 | /* Use the MAKEWORD(lowbyte, highbyte) macro from Windef.h */ |
| 219 | wVersionRequested = MAKEWORD(2, 2); |
| 220 | |
| 221 | err = WSAStartup(wVersionRequested, &wsaData); |
| 222 | if (!err) |
| 223 | return 0; |
| 224 | /* |
| 225 | * Tell the user that we could not find a usable |
| 226 | * Winsock DLL |
| 227 | */ |
| 228 | lwsl_err("WSAStartup failed with error: %d\n", err); |
| 229 | |
| 230 | return 1; |
| 231 | } |
| 232 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 233 | LWS_VISIBLE void |
| 234 | lws_plat_context_early_destroy(struct libwebsocket_context *context) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 235 | { |
| 236 | if (context->events) { |
| 237 | WSACloseEvent(context->events[0]); |
| 238 | free(context->events); |
| 239 | } |
| 240 | } |
| 241 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 242 | LWS_VISIBLE void |
| 243 | lws_plat_context_late_destroy(struct libwebsocket_context *context) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 244 | { |
| 245 | WSACleanup(); |
| 246 | } |
| 247 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 248 | LWS_VISIBLE int |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 249 | interface_to_sa(struct libwebsocket_context *context, |
| 250 | const char *ifname, struct sockaddr_in *addr, size_t addrlen) |
| 251 | { |
| 252 | return -1; |
| 253 | } |
| 254 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 255 | LWS_VISIBLE void |
| 256 | lws_plat_insert_socket_into_fds(struct libwebsocket_context *context, |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 257 | struct libwebsocket *wsi) |
| 258 | { |
| 259 | context->fds[context->fds_count++].revents = 0; |
| 260 | context->events[context->fds_count] = WSACreateEvent(); |
| 261 | WSAEventSelect(wsi->sock, context->events[context->fds_count], LWS_POLLIN); |
| 262 | } |
| 263 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 264 | LWS_VISIBLE void |
| 265 | lws_plat_delete_socket_from_fds(struct libwebsocket_context *context, |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 266 | struct libwebsocket *wsi, int m) |
| 267 | { |
| 268 | WSACloseEvent(context->events[m + 1]); |
| 269 | context->events[m + 1] = context->events[context->fds_count + 1]; |
| 270 | } |
| 271 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 272 | LWS_VISIBLE void |
| 273 | lws_plat_service_periodic(struct libwebsocket_context *context) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 274 | { |
| 275 | } |
| 276 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 277 | LWS_VISIBLE int |
| 278 | lws_plat_change_pollfd(struct libwebsocket_context *context, |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 279 | struct libwebsocket *wsi, struct libwebsocket_pollfd *pfd) |
| 280 | { |
| 281 | long networkevents = LWS_POLLOUT | LWS_POLLHUP; |
| 282 | |
| 283 | if ((pfd->events & LWS_POLLIN)) |
| 284 | networkevents |= LWS_POLLIN; |
| 285 | |
| 286 | if (WSAEventSelect(wsi->sock, |
| 287 | context->events[wsi->position_in_fds_table + 1], |
| 288 | networkevents) != SOCKET_ERROR) |
| 289 | return 0; |
| 290 | |
| 291 | lwsl_err("WSAEventSelect() failed with error %d\n", LWS_ERRNO); |
| 292 | |
| 293 | return 1; |
| 294 | } |
| 295 | |
Andy Green | e40aa9b | 2014-04-02 21:02:54 +0800 | [diff] [blame] | 296 | LWS_VISIBLE HANDLE |
| 297 | lws_plat_open_file(const char* filename, unsigned long* filelen) |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 298 | { |
| 299 | HANDLE ret; |
| 300 | WCHAR buffer[MAX_PATH]; |
| 301 | |
| 302 | MultiByteToWideChar(CP_UTF8, 0, filename, -1, buffer, |
| 303 | sizeof(buffer) / sizeof(buffer[0])); |
| 304 | ret = CreateFileW(buffer, GENERIC_READ, FILE_SHARE_READ, |
| 305 | NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); |
| 306 | |
| 307 | if (ret != LWS_INVALID_FILE) |
| 308 | *filelen = GetFileSize(ret, NULL); |
| 309 | |
| 310 | return ret; |
Andy Green | 5266f66 | 2014-04-02 21:31:07 +0800 | [diff] [blame^] | 311 | } |
| 312 | |
| 313 | /* |
| 314 | * Windows doesn't have an "inet_top" |
| 315 | * This came from http://memset.wordpress.com/2010/10/09/inet_ntop-for-win32/ |
| 316 | * suggested by Joakim Soderberg |
| 317 | */ |
| 318 | |
| 319 | LWS_VISIBLE |
| 320 | const char *inet_ntop(int af, const void *src, char *dst, int cnt) |
| 321 | { |
| 322 | struct sockaddr_in srcaddr; |
| 323 | DWORD rv; |
| 324 | |
| 325 | memset(&srcaddr, 0, sizeof(struct sockaddr_in)); |
| 326 | memcpy(&(srcaddr.sin_addr), src, sizeof(srcaddr.sin_addr)); |
| 327 | |
| 328 | srcaddr.sin_family = af; |
| 329 | if (!WSAAddressToString((struct sockaddr*) &srcaddr, |
| 330 | sizeof(struct sockaddr_in), 0, dst, (LPDWORD) &cnt)) |
| 331 | return dst; |
| 332 | |
| 333 | rv = WSAGetLastError(); |
| 334 | lwsl_err("WSAAddressToString() : %d\n",rv); |
| 335 | |
| 336 | return NULL; |
Andy Green | 158e804 | 2014-04-02 14:25:10 +0800 | [diff] [blame] | 337 | } |