| 1 | /* sim_sock.c: OS-dependent socket routines\r |
| 2 | \r |
| 3 | Copyright (c) 2001-2005, Robert M Supnik\r |
| 4 | \r |
| 5 | Permission is hereby granted, free of charge, to any person obtaining a\r |
| 6 | copy of this software and associated documentation files (the "Software"),\r |
| 7 | to deal in the Software without restriction, including without limitation\r |
| 8 | the rights to use, copy, modify, merge, publish, distribute, sublicense,\r |
| 9 | and/or sell copies of the Software, and to permit persons to whom the\r |
| 10 | Software is furnished to do so, subject to the following conditions:\r |
| 11 | \r |
| 12 | The above copyright notice and this permission notice shall be included in\r |
| 13 | all copies or substantial portions of the Software.\r |
| 14 | \r |
| 15 | THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\r |
| 16 | IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\r |
| 17 | FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL\r |
| 18 | ROBERT M SUPNIK BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER\r |
| 19 | IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN\r |
| 20 | CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\r |
| 21 | \r |
| 22 | Except as contained in this notice, the name of Robert M Supnik shall not be\r |
| 23 | used in advertising or otherwise to promote the sale, use or other dealings\r |
| 24 | in this Software without prior written authorization from Robert M Supnik.\r |
| 25 | \r |
| 26 | 19-Nov-05 RMS Added conditional for OpenBSD (from Federico G. Schwindt)\r |
| 27 | 16-Aug-05 RMS Fixed spurious SIGPIPE signal error in Unix\r |
| 28 | 14-Apr-05 RMS Added WSAEINPROGRESS test (from Tim Riker)\r |
| 29 | 09-Jan-04 RMS Fixed typing problem in Alpha Unix (found by Tim Chapman)\r |
| 30 | 17-Apr-03 RMS Fixed non-implemented version of sim_close_sock\r |
| 31 | (found by Mark Pizzolato)\r |
| 32 | 17-Dec-02 RMS Added sim_connect_socket, sim_create_socket\r |
| 33 | 08-Oct-02 RMS Revised for .NET compatibility\r |
| 34 | 22-Aug-02 RMS Changed calling sequence for sim_accept_conn\r |
| 35 | 22-May-02 RMS Added OS2 EMX support from Holger Veit\r |
| 36 | 06-Feb-02 RMS Added VMS support from Robert Alan Byer\r |
| 37 | 16-Sep-01 RMS Added Macintosh support from Peter Schorn\r |
| 38 | 02-Sep-01 RMS Fixed UNIX bugs found by Mirian Lennox and Tom Markson\r |
| 39 | */\r |
| 40 | \r |
| 41 | #include "sim_defs.h"\r |
| 42 | #include "sim_sock.h"\r |
| 43 | #include <signal.h>\r |
| 44 | \r |
| 45 | /* OS dependent routines\r |
| 46 | \r |
| 47 | sim_master_sock create master socket\r |
| 48 | sim_accept_conn accept connection\r |
| 49 | sim_read_sock read from socket\r |
| 50 | sim_write_sock write from socket\r |
| 51 | sim_close_sock close socket\r |
| 52 | sim_setnonblock set socket non-blocking\r |
| 53 | sim_msg_sock send message to socket\r |
| 54 | */\r |
| 55 | \r |
| 56 | int32 sim_sock_cnt = 0;\r |
| 57 | \r |
| 58 | /* First, all the non-implemented versions */\r |
| 59 | \r |
| 60 | #if defined (__OS2__) && !defined (__EMX__)\r |
| 61 | \r |
| 62 | SOCKET sim_master_sock (int32 port)\r |
| 63 | {\r |
| 64 | return INVALID_SOCKET;\r |
| 65 | }\r |
| 66 | \r |
| 67 | SOCKET sim_connect_sock (int32 ip, int32 port)\r |
| 68 | {\r |
| 69 | return INVALID_SOCKET;\r |
| 70 | }\r |
| 71 | \r |
| 72 | SOCKET sim_accept_conn (SOCKET master, uint32 *ipaddr)\r |
| 73 | {\r |
| 74 | return INVALID_SOCKET;\r |
| 75 | }\r |
| 76 | \r |
| 77 | int32 sim_read_sock (SOCKET sock, char *buf, int32 nbytes)\r |
| 78 | {\r |
| 79 | return -1;\r |
| 80 | }\r |
| 81 | \r |
| 82 | int32 sim_write_sock (SOCKET sock, char *msg, int32 nbytes)\r |
| 83 | {\r |
| 84 | return 0;\r |
| 85 | }\r |
| 86 | \r |
| 87 | void sim_close_sock (SOCKET sock, t_bool master)\r |
| 88 | {\r |
| 89 | return;\r |
| 90 | }\r |
| 91 | \r |
| 92 | SOCKET sim_setnonblock (SOCKET sock)\r |
| 93 | {\r |
| 94 | return SOCKET_ERROR;\r |
| 95 | }\r |
| 96 | \r |
| 97 | #else /* endif unimpl */\r |
| 98 | \r |
| 99 | /* UNIX, Win32, Macintosh, VMS, OS2 (Berkeley socket) routines */\r |
| 100 | \r |
| 101 | SOCKET sim_err_sock (SOCKET s, char *emsg, int32 flg)\r |
| 102 | {\r |
| 103 | int32 err = WSAGetLastError ();\r |
| 104 | \r |
| 105 | printf ("Sockets: %s error %d\n", emsg, err);\r |
| 106 | sim_close_sock (s, flg);\r |
| 107 | return INVALID_SOCKET;\r |
| 108 | }\r |
| 109 | \r |
| 110 | SOCKET sim_create_sock (void)\r |
| 111 | {\r |
| 112 | SOCKET newsock;\r |
| 113 | int32 err;\r |
| 114 | \r |
| 115 | #if defined (_WIN32)\r |
| 116 | WORD wVersionRequested; \r |
| 117 | WSADATA wsaData; \r |
| 118 | wVersionRequested = MAKEWORD (1, 1); \r |
| 119 | \r |
| 120 | if (sim_sock_cnt == 0) {\r |
| 121 | err = WSAStartup (wVersionRequested, &wsaData); /* start Winsock */ \r |
| 122 | if (err != 0) {\r |
| 123 | printf ("Winsock: startup error %d\n", err);\r |
| 124 | return INVALID_SOCKET;\r |
| 125 | }\r |
| 126 | }\r |
| 127 | sim_sock_cnt = sim_sock_cnt + 1;\r |
| 128 | #endif /* endif Win32 */\r |
| 129 | #if defined (SIGPIPE)\r |
| 130 | signal (SIGPIPE, SIG_IGN); /* no pipe signals */\r |
| 131 | #endif\r |
| 132 | \r |
| 133 | newsock = socket (AF_INET, SOCK_STREAM, 0); /* create socket */\r |
| 134 | if (newsock == INVALID_SOCKET) { /* socket error? */\r |
| 135 | err = WSAGetLastError ();\r |
| 136 | printf ("Sockets: socket error %d\n", err);\r |
| 137 | return INVALID_SOCKET;\r |
| 138 | }\r |
| 139 | return newsock;\r |
| 140 | }\r |
| 141 | \r |
| 142 | SOCKET sim_master_sock (int32 port)\r |
| 143 | {\r |
| 144 | SOCKET newsock;\r |
| 145 | struct sockaddr_in name;\r |
| 146 | int32 sta;\r |
| 147 | \r |
| 148 | newsock = sim_create_sock (); /* create socket */\r |
| 149 | if (newsock == INVALID_SOCKET) return newsock; /* socket error? */\r |
| 150 | \r |
| 151 | name.sin_family = AF_INET; /* name socket */\r |
| 152 | name.sin_port = htons ((unsigned short) port); /* insert port */\r |
| 153 | name.sin_addr.s_addr = htonl (INADDR_ANY); /* insert addr */\r |
| 154 | \r |
| 155 | sta = bind (newsock, (struct sockaddr *) &name, sizeof (name));\r |
| 156 | if (sta == SOCKET_ERROR) /* bind error? */\r |
| 157 | return sim_err_sock (newsock, "bind", 1);\r |
| 158 | sta = sim_setnonblock (newsock); /* set nonblocking */\r |
| 159 | if (sta == SOCKET_ERROR) /* fcntl error? */\r |
| 160 | return sim_err_sock (newsock, "fcntl", 1);\r |
| 161 | sta = listen (newsock, 1); /* listen on socket */\r |
| 162 | if (sta == SOCKET_ERROR) /* listen error? */\r |
| 163 | return sim_err_sock (newsock, "listen", 1);\r |
| 164 | return newsock; /* got it! */\r |
| 165 | }\r |
| 166 | \r |
| 167 | SOCKET sim_connect_sock (int32 ip, int32 port)\r |
| 168 | {\r |
| 169 | SOCKET newsock;\r |
| 170 | struct sockaddr_in name;\r |
| 171 | int32 sta;\r |
| 172 | \r |
| 173 | newsock = sim_create_sock (); /* create socket */\r |
| 174 | if (newsock == INVALID_SOCKET) return newsock; /* socket error? */\r |
| 175 | \r |
| 176 | name.sin_family = AF_INET; /* name socket */\r |
| 177 | name.sin_port = htons ((unsigned short) port); /* insert port */\r |
| 178 | name.sin_addr.s_addr = htonl (ip); /* insert addr */\r |
| 179 | \r |
| 180 | sta = sim_setnonblock (newsock); /* set nonblocking */\r |
| 181 | if (sta == SOCKET_ERROR) /* fcntl error? */\r |
| 182 | return sim_err_sock (newsock, "fcntl", 1);\r |
| 183 | sta = connect (newsock, (struct sockaddr *) &name, sizeof (name));\r |
| 184 | if ((sta == SOCKET_ERROR) && \r |
| 185 | (WSAGetLastError () != WSAEWOULDBLOCK) &&\r |
| 186 | (WSAGetLastError () != WSAEINPROGRESS))\r |
| 187 | return sim_err_sock (newsock, "connect", 1);\r |
| 188 | \r |
| 189 | return newsock; /* got it! */\r |
| 190 | }\r |
| 191 | \r |
| 192 | SOCKET sim_accept_conn (SOCKET master, uint32 *ipaddr)\r |
| 193 | {\r |
| 194 | int32 sta, err;\r |
| 195 | #if defined (macintosh) || defined (__linux) || \\r |
| 196 | defined (__APPLE__) || defined (__OpenBSD__)\r |
| 197 | socklen_t size;\r |
| 198 | #elif defined (_WIN32) || defined (__EMX__) ||\\r |
| 199 | (defined (__ALPHA) && defined (__unix__))\r |
| 200 | int size;\r |
| 201 | #else \r |
| 202 | size_t size; \r |
| 203 | #endif\r |
| 204 | SOCKET newsock;\r |
| 205 | struct sockaddr_in clientname;\r |
| 206 | \r |
| 207 | if (master == 0) return INVALID_SOCKET; /* not attached? */\r |
| 208 | size = sizeof (clientname);\r |
| 209 | newsock = accept (master, (struct sockaddr *) &clientname, &size);\r |
| 210 | if (newsock == INVALID_SOCKET) { /* error? */\r |
| 211 | err = WSAGetLastError ();\r |
| 212 | if (err != WSAEWOULDBLOCK)\r |
| 213 | printf ("Sockets: accept error %d\n", err);\r |
| 214 | return INVALID_SOCKET;\r |
| 215 | }\r |
| 216 | if (ipaddr != NULL) *ipaddr = ntohl (clientname.sin_addr.s_addr);\r |
| 217 | \r |
| 218 | sta = sim_setnonblock (newsock); /* set nonblocking */\r |
| 219 | if (sta == SOCKET_ERROR) /* fcntl error? */\r |
| 220 | return sim_err_sock (newsock, "fcntl", 0);\r |
| 221 | return newsock;\r |
| 222 | }\r |
| 223 | \r |
| 224 | int32 sim_check_conn (SOCKET sock, t_bool rd)\r |
| 225 | {\r |
| 226 | fd_set rw_set, er_set;\r |
| 227 | fd_set *rw_p = &rw_set;\r |
| 228 | fd_set *er_p = &er_set;\r |
| 229 | struct timeval tz;\r |
| 230 | \r |
| 231 | timerclear (&tz);\r |
| 232 | FD_ZERO (rw_p);\r |
| 233 | FD_ZERO (er_p);\r |
| 234 | FD_SET (sock, rw_p);\r |
| 235 | FD_SET (sock, er_p);\r |
| 236 | if (rd) select ((int) sock + 1, rw_p, NULL, er_p, &tz);\r |
| 237 | else select ((int) sock + 1, NULL, rw_p, er_p, &tz);\r |
| 238 | if (FD_ISSET (sock, rw_p)) return 1;\r |
| 239 | if (FD_ISSET (sock, er_p)) return -1;\r |
| 240 | return 0;\r |
| 241 | }\r |
| 242 | \r |
| 243 | int32 sim_read_sock (SOCKET sock, char *buf, int32 nbytes)\r |
| 244 | {\r |
| 245 | int32 rbytes, err;\r |
| 246 | \r |
| 247 | rbytes = recv (sock, buf, nbytes, 0);\r |
| 248 | if (rbytes == 0) return -1; /* disconnect */\r |
| 249 | if (rbytes == SOCKET_ERROR) {\r |
| 250 | err = WSAGetLastError ();\r |
| 251 | if (err == WSAEWOULDBLOCK) return 0; /* no data */\r |
| 252 | printf ("Sockets: read error %d\n", err);\r |
| 253 | return -1;\r |
| 254 | }\r |
| 255 | return rbytes;\r |
| 256 | }\r |
| 257 | \r |
| 258 | int32 sim_write_sock (SOCKET sock, char *msg, int32 nbytes)\r |
| 259 | {\r |
| 260 | return send (sock, msg, nbytes, 0);\r |
| 261 | }\r |
| 262 | \r |
| 263 | void sim_close_sock (SOCKET sock, t_bool master)\r |
| 264 | {\r |
| 265 | #if defined (_WIN32)\r |
| 266 | closesocket (sock);\r |
| 267 | if (master) {\r |
| 268 | sim_sock_cnt = sim_sock_cnt - 1;\r |
| 269 | if (sim_sock_cnt <= 0) {\r |
| 270 | WSACleanup ();\r |
| 271 | sim_sock_cnt = 0;\r |
| 272 | }\r |
| 273 | }\r |
| 274 | #else\r |
| 275 | close (sock);\r |
| 276 | #endif\r |
| 277 | return;\r |
| 278 | }\r |
| 279 | \r |
| 280 | #if defined (_WIN32) /* Windows */\r |
| 281 | SOCKET sim_setnonblock (SOCKET sock)\r |
| 282 | {\r |
| 283 | unsigned long non_block = 1;\r |
| 284 | \r |
| 285 | return ioctlsocket (sock, FIONBIO, &non_block); /* set nonblocking */\r |
| 286 | }\r |
| 287 | \r |
| 288 | #elif defined (VMS) /* VMS */\r |
| 289 | SOCKET sim_setnonblock (SOCKET sock)\r |
| 290 | {\r |
| 291 | int non_block = 1;\r |
| 292 | \r |
| 293 | return ioctl (sock, FIONBIO, &non_block); /* set nonblocking */\r |
| 294 | }\r |
| 295 | \r |
| 296 | #else /* Mac, Unix, OS/2 */\r |
| 297 | int32 sim_setnonblock (SOCKET sock)\r |
| 298 | {\r |
| 299 | int32 fl, sta;\r |
| 300 | \r |
| 301 | fl = fcntl (sock, F_GETFL,0); /* get flags */\r |
| 302 | if (fl == -1) return SOCKET_ERROR;\r |
| 303 | sta = fcntl (sock, F_SETFL, fl | O_NONBLOCK); /* set nonblock */\r |
| 304 | if (sta == -1) return SOCKET_ERROR;\r |
| 305 | #if !defined (macintosh) && !defined (__EMX__) /* Unix only */\r |
| 306 | sta = fcntl (sock, F_SETOWN, getpid()); /* set ownership */\r |
| 307 | if (sta == -1) return SOCKET_ERROR;\r |
| 308 | #endif\r |
| 309 | return 0;\r |
| 310 | }\r |
| 311 | \r |
| 312 | #endif /* endif !Win32 && !VMS */\r |
| 313 | \r |
| 314 | #endif /* end else !implemented */\r |