Travis Geiselbrecht | 1d0df69 | 2008-09-01 02:26:09 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without modification, |
| 6 | * are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| 19 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 20 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| 21 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 22 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 23 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 24 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| 25 | * OF SUCH DAMAGE. |
| 26 | * |
| 27 | * This file is part of the lwIP TCP/IP stack. |
| 28 | * |
| 29 | * Author: Adam Dunkels <adam@sics.se> |
| 30 | * |
| 31 | * Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu> |
| 32 | * |
| 33 | */ |
| 34 | |
| 35 | #include <string.h> |
| 36 | //#include <errno.h> |
| 37 | |
| 38 | #include "lwip/opt.h" |
| 39 | #include "lwip/api.h" |
| 40 | #include "lwip/arch.h" |
| 41 | #include "lwip/sys.h" |
| 42 | |
| 43 | #include "lwip/sockets.h" |
| 44 | |
| 45 | #define NUM_SOCKETS MEMP_NUM_NETCONN |
| 46 | |
| 47 | struct lwip_socket { |
| 48 | struct netconn *conn; |
| 49 | struct netbuf *lastdata; |
| 50 | u16_t lastoffset; |
| 51 | u16_t rcvevent; |
| 52 | u16_t sendevent; |
| 53 | u16_t flags; |
| 54 | int err; |
| 55 | }; |
| 56 | |
| 57 | struct lwip_select_cb |
| 58 | { |
| 59 | struct lwip_select_cb *next; |
| 60 | fd_set *readset; |
| 61 | fd_set *writeset; |
| 62 | fd_set *exceptset; |
| 63 | int sem_signalled; |
| 64 | sys_sem_t sem; |
| 65 | }; |
| 66 | |
| 67 | static struct lwip_socket sockets[NUM_SOCKETS]; |
| 68 | static struct lwip_select_cb *select_cb_list = 0; |
| 69 | |
| 70 | static sys_sem_t socksem = 0; |
| 71 | static sys_sem_t selectsem = 0; |
| 72 | |
| 73 | static void |
| 74 | event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len); |
| 75 | |
| 76 | static int err_to_errno_table[11] = { |
| 77 | 0, /* ERR_OK 0 No error, everything OK. */ |
| 78 | ENOMEM, /* ERR_MEM -1 Out of memory error. */ |
| 79 | ENOBUFS, /* ERR_BUF -2 Buffer error. */ |
| 80 | ECONNABORTED, /* ERR_ABRT -3 Connection aborted. */ |
| 81 | ECONNRESET, /* ERR_RST -4 Connection reset. */ |
| 82 | ESHUTDOWN, /* ERR_CLSD -5 Connection closed. */ |
| 83 | ENOTCONN, /* ERR_CONN -6 Not connected. */ |
| 84 | EINVAL, /* ERR_VAL -7 Illegal value. */ |
| 85 | EIO, /* ERR_ARG -8 Illegal argument. */ |
| 86 | EHOSTUNREACH, /* ERR_RTE -9 Routing problem. */ |
| 87 | EADDRINUSE /* ERR_USE -10 Address in use. */ |
| 88 | }; |
| 89 | |
| 90 | #define ERR_TO_ERRNO_TABLE_SIZE \ |
| 91 | (sizeof(err_to_errno_table)/sizeof(err_to_errno_table[0])) |
| 92 | |
| 93 | #define err_to_errno(err) \ |
| 94 | (-(err) >= 0 && -(err) < ERR_TO_ERRNO_TABLE_SIZE ? \ |
| 95 | err_to_errno_table[-(err)] : EIO) |
| 96 | |
| 97 | #ifdef ERRNO |
| 98 | #define set_errno(err) errno = (err) |
| 99 | #else |
| 100 | #define set_errno(err) |
| 101 | #endif |
| 102 | |
| 103 | #define sock_set_errno(sk, e) do { \ |
| 104 | sk->err = (e); \ |
| 105 | set_errno(sk->err); \ |
| 106 | } while (0) |
| 107 | |
| 108 | |
| 109 | static struct lwip_socket * |
| 110 | get_socket(int s) |
| 111 | { |
| 112 | struct lwip_socket *sock; |
| 113 | |
| 114 | if ((s < 0) || (s > NUM_SOCKETS)) { |
| 115 | LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s)); |
| 116 | set_errno(EBADF); |
| 117 | return NULL; |
| 118 | } |
| 119 | |
| 120 | sock = &sockets[s]; |
| 121 | |
| 122 | if (!sock->conn) { |
| 123 | LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s)); |
| 124 | set_errno(EBADF); |
| 125 | return NULL; |
| 126 | } |
| 127 | |
| 128 | return sock; |
| 129 | } |
| 130 | |
| 131 | static int |
| 132 | alloc_socket(struct netconn *newconn) |
| 133 | { |
| 134 | int i; |
| 135 | |
| 136 | if (!socksem) |
| 137 | socksem = sys_sem_new(1); |
| 138 | |
| 139 | /* Protect socket array */ |
| 140 | sys_sem_wait(socksem); |
| 141 | |
| 142 | /* allocate a new socket identifier */ |
| 143 | for(i = 0; i < NUM_SOCKETS; ++i) { |
| 144 | if (!sockets[i].conn) { |
| 145 | sockets[i].conn = newconn; |
| 146 | sockets[i].lastdata = NULL; |
| 147 | sockets[i].lastoffset = 0; |
| 148 | sockets[i].rcvevent = 0; |
| 149 | sockets[i].sendevent = 1; /* TCP send buf is empty */ |
| 150 | sockets[i].flags = 0; |
| 151 | sockets[i].err = 0; |
| 152 | sys_sem_signal(socksem); |
| 153 | return i; |
| 154 | } |
| 155 | } |
| 156 | sys_sem_signal(socksem); |
| 157 | return -1; |
| 158 | } |
| 159 | |
| 160 | int |
| 161 | lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen) |
| 162 | { |
| 163 | struct lwip_socket *sock; |
| 164 | struct netconn *newconn; |
| 165 | struct ip_addr naddr; |
| 166 | u16_t port; |
| 167 | int newsock; |
| 168 | struct sockaddr_in sin; |
| 169 | |
| 170 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s)); |
| 171 | sock = get_socket(s); |
| 172 | if (!sock) { |
| 173 | set_errno(EBADF); |
| 174 | return -1; |
| 175 | } |
| 176 | |
| 177 | newconn = netconn_accept(sock->conn); |
| 178 | |
| 179 | /* get the IP address and port of the remote host */ |
| 180 | netconn_peer(newconn, &naddr, &port); |
| 181 | |
| 182 | memset(&sin, 0, sizeof(sin)); |
| 183 | sin.sin_len = sizeof(sin); |
| 184 | sin.sin_family = AF_INET; |
| 185 | sin.sin_port = htons(port); |
| 186 | sin.sin_addr.s_addr = naddr.addr; |
| 187 | |
| 188 | if (*addrlen > sizeof(sin)) |
| 189 | *addrlen = sizeof(sin); |
| 190 | |
| 191 | memcpy(addr, &sin, *addrlen); |
| 192 | |
| 193 | newsock = alloc_socket(newconn); |
| 194 | if (newsock == -1) { |
| 195 | netconn_delete(newconn); |
| 196 | sock_set_errno(sock, ENOBUFS); |
| 197 | return -1; |
| 198 | } |
| 199 | newconn->callback = event_callback; |
| 200 | sock = get_socket(newsock); |
| 201 | |
| 202 | sys_sem_wait(socksem); |
| 203 | sock->rcvevent += -1 - newconn->socket; |
| 204 | newconn->socket = newsock; |
| 205 | sys_sem_signal(socksem); |
| 206 | |
| 207 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock)); |
| 208 | ip_addr_debug_print(SOCKETS_DEBUG, &naddr); |
| 209 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", port)); |
| 210 | |
| 211 | sock_set_errno(sock, 0); |
| 212 | return newsock; |
| 213 | } |
| 214 | |
| 215 | int |
| 216 | lwip_bind(int s, struct sockaddr *name, socklen_t namelen) |
| 217 | { |
| 218 | struct lwip_socket *sock; |
| 219 | struct ip_addr local_addr; |
| 220 | u16_t local_port; |
| 221 | err_t err; |
| 222 | |
| 223 | sock = get_socket(s); |
| 224 | if (!sock) { |
| 225 | set_errno(EBADF); |
| 226 | return -1; |
| 227 | } |
| 228 | |
| 229 | local_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr; |
| 230 | local_port = ((struct sockaddr_in *)name)->sin_port; |
| 231 | |
| 232 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s)); |
| 233 | ip_addr_debug_print(SOCKETS_DEBUG, &local_addr); |
| 234 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(local_port))); |
| 235 | |
| 236 | err = netconn_bind(sock->conn, &local_addr, ntohs(local_port)); |
| 237 | |
| 238 | if (err != ERR_OK) { |
| 239 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err)); |
| 240 | sock_set_errno(sock, err_to_errno(err)); |
| 241 | return -1; |
| 242 | } |
| 243 | |
| 244 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s)); |
| 245 | sock_set_errno(sock, 0); |
| 246 | return 0; |
| 247 | } |
| 248 | |
| 249 | int |
| 250 | lwip_close(int s) |
| 251 | { |
| 252 | struct lwip_socket *sock; |
| 253 | |
| 254 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_close(%d)\n", s)); |
| 255 | if (!socksem) |
| 256 | socksem = sys_sem_new(1); |
| 257 | |
| 258 | /* We cannot allow multiple closes of the same socket. */ |
| 259 | sys_sem_wait(socksem); |
| 260 | |
| 261 | sock = get_socket(s); |
| 262 | if (!sock) { |
| 263 | sys_sem_signal(socksem); |
| 264 | set_errno(EBADF); |
| 265 | return -1; |
| 266 | } |
| 267 | |
| 268 | netconn_delete(sock->conn); |
| 269 | if (sock->lastdata) { |
| 270 | netbuf_delete(sock->lastdata); |
| 271 | } |
| 272 | sock->lastdata = NULL; |
| 273 | sock->lastoffset = 0; |
| 274 | sock->conn = NULL; |
| 275 | sys_sem_signal(socksem); |
| 276 | sock_set_errno(sock, 0); |
| 277 | return 0; |
| 278 | } |
| 279 | |
| 280 | int |
| 281 | lwip_connect(int s, struct sockaddr *name, socklen_t namelen) |
| 282 | { |
| 283 | struct lwip_socket *sock; |
| 284 | err_t err; |
| 285 | |
| 286 | sock = get_socket(s); |
| 287 | if (!sock) { |
| 288 | set_errno(EBADF); |
| 289 | return -1; |
| 290 | } |
| 291 | |
| 292 | if (((struct sockaddr_in *)name)->sin_family == AF_UNSPEC) { |
| 293 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s)); |
| 294 | err = netconn_disconnect(sock->conn); |
| 295 | } else { |
| 296 | struct ip_addr remote_addr; |
| 297 | u16_t remote_port; |
| 298 | |
| 299 | remote_addr.addr = ((struct sockaddr_in *)name)->sin_addr.s_addr; |
| 300 | remote_port = ((struct sockaddr_in *)name)->sin_port; |
| 301 | |
| 302 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, addr=", s)); |
| 303 | ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr); |
| 304 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u)\n", ntohs(remote_port))); |
| 305 | |
| 306 | err = netconn_connect(sock->conn, &remote_addr, ntohs(remote_port)); |
| 307 | } |
| 308 | |
| 309 | if (err != ERR_OK) { |
| 310 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err)); |
| 311 | sock_set_errno(sock, err_to_errno(err)); |
| 312 | return -1; |
| 313 | } |
| 314 | |
| 315 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s)); |
| 316 | sock_set_errno(sock, 0); |
| 317 | return 0; |
| 318 | } |
| 319 | |
| 320 | int |
| 321 | lwip_listen(int s, int backlog) |
| 322 | { |
| 323 | struct lwip_socket *sock; |
| 324 | err_t err; |
| 325 | |
| 326 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d, backlog=%d)\n", s, backlog)); |
| 327 | sock = get_socket(s); |
| 328 | if (!sock) { |
| 329 | set_errno(EBADF); |
| 330 | return -1; |
| 331 | } |
| 332 | |
| 333 | err = netconn_listen(sock->conn); |
| 334 | |
| 335 | if (err != ERR_OK) { |
| 336 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err)); |
| 337 | sock_set_errno(sock, err_to_errno(err)); |
| 338 | return -1; |
| 339 | } |
| 340 | |
| 341 | sock_set_errno(sock, 0); |
| 342 | return 0; |
| 343 | } |
| 344 | |
| 345 | int |
| 346 | lwip_recvfrom(int s, void *mem, int len, unsigned int flags, |
| 347 | struct sockaddr *from, socklen_t *fromlen) |
| 348 | { |
| 349 | struct lwip_socket *sock; |
| 350 | struct netbuf *buf; |
| 351 | u16_t buflen, copylen; |
| 352 | struct ip_addr *addr; |
| 353 | u16_t port; |
| 354 | |
| 355 | |
| 356 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d, %p, %d, 0x%x, ..)\n", s, mem, len, flags)); |
| 357 | sock = get_socket(s); |
| 358 | if (!sock) { |
| 359 | set_errno(EBADF); |
| 360 | return -1; |
| 361 | } |
| 362 | |
| 363 | /* Check if there is data left from the last recv operation. */ |
| 364 | if (sock->lastdata) { |
| 365 | buf = sock->lastdata; |
| 366 | } else { |
| 367 | /* If this is non-blocking call, then check first */ |
| 368 | if (((flags & MSG_DONTWAIT) || (sock->flags & O_NONBLOCK)) |
| 369 | && !sock->rcvevent) |
| 370 | { |
| 371 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): returning EWOULDBLOCK\n", s)); |
| 372 | sock_set_errno(sock, EWOULDBLOCK); |
| 373 | return -1; |
| 374 | } |
| 375 | |
| 376 | /* No data was left from the previous operation, so we try to get |
| 377 | some from the network. */ |
| 378 | buf = netconn_recv(sock->conn); |
| 379 | |
| 380 | if (!buf) { |
| 381 | /* We should really do some error checking here. */ |
| 382 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL!\n", s)); |
| 383 | sock_set_errno(sock, 0); |
| 384 | return 0; |
| 385 | } |
| 386 | } |
| 387 | |
| 388 | buflen = netbuf_len(buf); |
| 389 | |
| 390 | buflen -= sock->lastoffset; |
| 391 | |
| 392 | if (len > buflen) { |
| 393 | copylen = buflen; |
| 394 | } else { |
| 395 | copylen = len; |
| 396 | } |
| 397 | |
| 398 | /* copy the contents of the received buffer into |
| 399 | the supplied memory pointer mem */ |
| 400 | netbuf_copy_partial(buf, mem, copylen, sock->lastoffset); |
| 401 | |
| 402 | /* Check to see from where the data was. */ |
| 403 | if (from && fromlen) { |
| 404 | struct sockaddr_in sin; |
| 405 | |
| 406 | addr = netbuf_fromaddr(buf); |
| 407 | port = netbuf_fromport(buf); |
| 408 | |
| 409 | memset(&sin, 0, sizeof(sin)); |
| 410 | sin.sin_len = sizeof(sin); |
| 411 | sin.sin_family = AF_INET; |
| 412 | sin.sin_port = htons(port); |
| 413 | sin.sin_addr.s_addr = addr->addr; |
| 414 | |
| 415 | if (*fromlen > sizeof(sin)) |
| 416 | *fromlen = sizeof(sin); |
| 417 | |
| 418 | memcpy(from, &sin, *fromlen); |
| 419 | |
| 420 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s)); |
| 421 | ip_addr_debug_print(SOCKETS_DEBUG, addr); |
| 422 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen)); |
| 423 | } else { |
| 424 | #if SOCKETS_DEBUG |
| 425 | addr = netbuf_fromaddr(buf); |
| 426 | port = netbuf_fromport(buf); |
| 427 | |
| 428 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s)); |
| 429 | ip_addr_debug_print(SOCKETS_DEBUG, addr); |
| 430 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u len=%u\n", port, copylen)); |
| 431 | #endif |
| 432 | |
| 433 | } |
| 434 | |
| 435 | /* If this is a TCP socket, check if there is data left in the |
| 436 | buffer. If so, it should be saved in the sock structure for next |
| 437 | time around. */ |
| 438 | if (netconn_type(sock->conn) == NETCONN_TCP && buflen - copylen > 0) { |
| 439 | sock->lastdata = buf; |
| 440 | sock->lastoffset += copylen; |
| 441 | } else { |
| 442 | sock->lastdata = NULL; |
| 443 | sock->lastoffset = 0; |
| 444 | netbuf_delete(buf); |
| 445 | } |
| 446 | |
| 447 | |
| 448 | sock_set_errno(sock, 0); |
| 449 | return copylen; |
| 450 | } |
| 451 | |
| 452 | int |
| 453 | lwip_read(int s, void *mem, int len) |
| 454 | { |
| 455 | return lwip_recvfrom(s, mem, len, 0, NULL, NULL); |
| 456 | } |
| 457 | |
| 458 | int |
| 459 | lwip_recv(int s, void *mem, int len, unsigned int flags) |
| 460 | { |
| 461 | return lwip_recvfrom(s, mem, len, flags, NULL, NULL); |
| 462 | } |
| 463 | |
| 464 | int |
| 465 | lwip_send(int s, void *data, int size, unsigned int flags) |
| 466 | { |
| 467 | struct lwip_socket *sock; |
| 468 | struct netbuf *buf; |
| 469 | err_t err; |
| 470 | |
| 471 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d, data=%p, size=%d, flags=0x%x)\n", s, data, size, flags)); |
| 472 | |
| 473 | sock = get_socket(s); |
| 474 | if (!sock) { |
| 475 | set_errno(EBADF); |
| 476 | return -1; |
| 477 | } |
| 478 | |
| 479 | switch (netconn_type(sock->conn)) { |
| 480 | case NETCONN_RAW: |
| 481 | case NETCONN_UDP: |
| 482 | case NETCONN_UDPLITE: |
| 483 | case NETCONN_UDPNOCHKSUM: |
| 484 | /* create a buffer */ |
| 485 | buf = netbuf_new(); |
| 486 | |
| 487 | if (!buf) { |
| 488 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ENOBUFS\n", s)); |
| 489 | sock_set_errno(sock, ENOBUFS); |
| 490 | return -1; |
| 491 | } |
| 492 | |
| 493 | /* make the buffer point to the data that should |
| 494 | be sent */ |
| 495 | netbuf_ref(buf, data, size); |
| 496 | |
| 497 | /* send the data */ |
| 498 | err = netconn_send(sock->conn, buf); |
| 499 | |
| 500 | /* deallocated the buffer */ |
| 501 | netbuf_delete(buf); |
| 502 | break; |
| 503 | case NETCONN_TCP: |
| 504 | err = netconn_write(sock->conn, data, size, NETCONN_COPY); |
| 505 | break; |
| 506 | default: |
| 507 | err = ERR_ARG; |
| 508 | break; |
| 509 | } |
| 510 | if (err != ERR_OK) { |
| 511 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) err=%d\n", s, err)); |
| 512 | sock_set_errno(sock, err_to_errno(err)); |
| 513 | return -1; |
| 514 | } |
| 515 | |
| 516 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) ok size=%d\n", s, size)); |
| 517 | sock_set_errno(sock, 0); |
| 518 | return size; |
| 519 | } |
| 520 | |
| 521 | int |
| 522 | lwip_sendto(int s, void *data, int size, unsigned int flags, |
| 523 | struct sockaddr *to, socklen_t tolen) |
| 524 | { |
| 525 | struct lwip_socket *sock; |
| 526 | struct ip_addr remote_addr, addr; |
| 527 | u16_t remote_port, port; |
| 528 | int ret,connected; |
| 529 | |
| 530 | sock = get_socket(s); |
| 531 | if (!sock) { |
| 532 | set_errno(EBADF); |
| 533 | return -1; |
| 534 | } |
| 535 | |
| 536 | /* get the peer if currently connected */ |
| 537 | connected = (netconn_peer(sock->conn, &addr, &port) == ERR_OK); |
| 538 | |
| 539 | remote_addr.addr = ((struct sockaddr_in *)to)->sin_addr.s_addr; |
| 540 | remote_port = ((struct sockaddr_in *)to)->sin_port; |
| 541 | |
| 542 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_sendto(%d, data=%p, size=%d, flags=0x%x to=", s, data, size, flags)); |
| 543 | ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr); |
| 544 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%u\n", ntohs(remote_port))); |
| 545 | |
| 546 | netconn_connect(sock->conn, &remote_addr, ntohs(remote_port)); |
| 547 | |
| 548 | ret = lwip_send(s, data, size, flags); |
| 549 | |
| 550 | /* reset the remote address and port number |
| 551 | of the connection */ |
| 552 | if (connected) |
| 553 | netconn_connect(sock->conn, &addr, port); |
| 554 | else |
| 555 | netconn_disconnect(sock->conn); |
| 556 | return ret; |
| 557 | } |
| 558 | |
| 559 | int |
| 560 | lwip_socket(int domain, int type, int protocol) |
| 561 | { |
| 562 | struct netconn *conn; |
| 563 | int i; |
| 564 | |
| 565 | /* create a netconn */ |
| 566 | switch (type) { |
| 567 | case SOCK_RAW: |
| 568 | conn = netconn_new_with_proto_and_callback(NETCONN_RAW, protocol, event_callback); |
| 569 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_RAW, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 570 | break; |
| 571 | case SOCK_DGRAM: |
| 572 | conn = netconn_new_with_callback(NETCONN_UDP, event_callback); |
| 573 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_DGRAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 574 | break; |
| 575 | case SOCK_STREAM: |
| 576 | conn = netconn_new_with_callback(NETCONN_TCP, event_callback); |
| 577 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_STREAM, %d) = ", domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 578 | break; |
| 579 | default: |
| 580 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%d, %d/UNKNOWN, %d) = -1\n", domain, type, protocol)); |
| 581 | set_errno(EINVAL); |
| 582 | return -1; |
| 583 | } |
| 584 | |
| 585 | if (!conn) { |
| 586 | LWIP_DEBUGF(SOCKETS_DEBUG, ("-1 / ENOBUFS (could not create netconn)\n")); |
| 587 | set_errno(ENOBUFS); |
| 588 | return -1; |
| 589 | } |
| 590 | |
| 591 | i = alloc_socket(conn); |
| 592 | |
| 593 | if (i == -1) { |
| 594 | netconn_delete(conn); |
| 595 | set_errno(ENOBUFS); |
| 596 | return -1; |
| 597 | } |
| 598 | conn->socket = i; |
| 599 | LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i)); |
| 600 | set_errno(0); |
| 601 | return i; |
| 602 | } |
| 603 | |
| 604 | int |
| 605 | lwip_write(int s, void *data, int size) |
| 606 | { |
| 607 | return lwip_send(s, data, size, 0); |
| 608 | } |
| 609 | |
| 610 | |
| 611 | static int |
| 612 | lwip_selscan(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset) |
| 613 | { |
| 614 | int i, nready = 0; |
| 615 | fd_set lreadset, lwriteset, lexceptset; |
| 616 | struct lwip_socket *p_sock; |
| 617 | |
| 618 | FD_ZERO(&lreadset); |
| 619 | FD_ZERO(&lwriteset); |
| 620 | FD_ZERO(&lexceptset); |
| 621 | |
| 622 | /* Go through each socket in each list to count number of sockets which |
| 623 | currently match */ |
| 624 | for(i = 0; i < maxfdp1; i++) |
| 625 | { |
| 626 | if (FD_ISSET(i, readset)) |
| 627 | { |
| 628 | /* See if netconn of this socket is ready for read */ |
| 629 | p_sock = get_socket(i); |
| 630 | if (p_sock && (p_sock->lastdata || p_sock->rcvevent)) |
| 631 | { |
| 632 | FD_SET(i, &lreadset); |
| 633 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for reading\n", i)); |
| 634 | nready++; |
| 635 | } |
| 636 | } |
| 637 | if (FD_ISSET(i, writeset)) |
| 638 | { |
| 639 | /* See if netconn of this socket is ready for write */ |
| 640 | p_sock = get_socket(i); |
| 641 | if (p_sock && p_sock->sendevent) |
| 642 | { |
| 643 | FD_SET(i, &lwriteset); |
| 644 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for writing\n", i)); |
| 645 | nready++; |
| 646 | } |
| 647 | } |
| 648 | } |
| 649 | *readset = lreadset; |
| 650 | *writeset = lwriteset; |
| 651 | FD_ZERO(exceptset); |
| 652 | |
| 653 | return nready; |
| 654 | } |
| 655 | |
| 656 | |
| 657 | |
| 658 | int |
| 659 | lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset, |
| 660 | struct timeval *timeout) |
| 661 | { |
| 662 | int i; |
| 663 | int nready; |
| 664 | fd_set lreadset, lwriteset, lexceptset; |
| 665 | u32_t msectimeout; |
| 666 | struct lwip_select_cb select_cb; |
| 667 | struct lwip_select_cb *p_selcb; |
| 668 | |
| 669 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select(%d, %p, %p, %p, tvsec=%ld tvusec=%ld)\n", maxfdp1, (void *)readset, (void *) writeset, (void *) exceptset, timeout ? timeout->tv_sec : -1L, timeout ? timeout->tv_usec : -1L)); |
| 670 | |
| 671 | select_cb.next = 0; |
| 672 | select_cb.readset = readset; |
| 673 | select_cb.writeset = writeset; |
| 674 | select_cb.exceptset = exceptset; |
| 675 | select_cb.sem_signalled = 0; |
| 676 | |
| 677 | /* Protect ourselves searching through the list */ |
| 678 | if (!selectsem) |
| 679 | selectsem = sys_sem_new(1); |
| 680 | sys_sem_wait(selectsem); |
| 681 | |
| 682 | if (readset) |
| 683 | lreadset = *readset; |
| 684 | else |
| 685 | FD_ZERO(&lreadset); |
| 686 | if (writeset) |
| 687 | lwriteset = *writeset; |
| 688 | else |
| 689 | FD_ZERO(&lwriteset); |
| 690 | if (exceptset) |
| 691 | lexceptset = *exceptset; |
| 692 | else |
| 693 | FD_ZERO(&lexceptset); |
| 694 | |
| 695 | /* Go through each socket in each list to count number of sockets which |
| 696 | currently match */ |
| 697 | nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset); |
| 698 | |
| 699 | /* If we don't have any current events, then suspend if we are supposed to */ |
| 700 | if (!nready) |
| 701 | { |
| 702 | if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0) |
| 703 | { |
| 704 | sys_sem_signal(selectsem); |
| 705 | if (readset) |
| 706 | FD_ZERO(readset); |
| 707 | if (writeset) |
| 708 | FD_ZERO(writeset); |
| 709 | if (exceptset) |
| 710 | FD_ZERO(exceptset); |
| 711 | |
| 712 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout, returning 0\n")); |
| 713 | set_errno(0); |
| 714 | |
| 715 | return 0; |
| 716 | } |
| 717 | |
| 718 | /* add our semaphore to list */ |
| 719 | /* We don't actually need any dynamic memory. Our entry on the |
| 720 | * list is only valid while we are in this function, so it's ok |
| 721 | * to use local variables */ |
| 722 | |
| 723 | select_cb.sem = sys_sem_new(0); |
| 724 | /* Note that we are still protected */ |
| 725 | /* Put this select_cb on top of list */ |
| 726 | select_cb.next = select_cb_list; |
| 727 | select_cb_list = &select_cb; |
| 728 | |
| 729 | /* Now we can safely unprotect */ |
| 730 | sys_sem_signal(selectsem); |
| 731 | |
| 732 | /* Now just wait to be woken */ |
| 733 | if (timeout == 0) |
| 734 | /* Wait forever */ |
| 735 | msectimeout = 0; |
| 736 | else |
| 737 | msectimeout = ((timeout->tv_sec * 1000) + ((timeout->tv_usec + 500)/1000)); |
| 738 | |
| 739 | i = sys_sem_wait_timeout(select_cb.sem, msectimeout); |
| 740 | |
| 741 | /* Take us off the list */ |
| 742 | sys_sem_wait(selectsem); |
| 743 | if (select_cb_list == &select_cb) |
| 744 | select_cb_list = select_cb.next; |
| 745 | else |
| 746 | for (p_selcb = select_cb_list; p_selcb; p_selcb = p_selcb->next) |
| 747 | if (p_selcb->next == &select_cb) |
| 748 | { |
| 749 | p_selcb->next = select_cb.next; |
| 750 | break; |
| 751 | } |
| 752 | |
| 753 | sys_sem_signal(selectsem); |
| 754 | |
| 755 | sys_sem_free(select_cb.sem); |
| 756 | if (i == 0) /* Timeout */ |
| 757 | { |
| 758 | if (readset) |
| 759 | FD_ZERO(readset); |
| 760 | if (writeset) |
| 761 | FD_ZERO(writeset); |
| 762 | if (exceptset) |
| 763 | FD_ZERO(exceptset); |
| 764 | |
| 765 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: timeout expired\n")); |
| 766 | set_errno(0); |
| 767 | |
| 768 | return 0; |
| 769 | } |
| 770 | |
| 771 | if (readset) |
| 772 | lreadset = *readset; |
| 773 | else |
| 774 | FD_ZERO(&lreadset); |
| 775 | if (writeset) |
| 776 | lwriteset = *writeset; |
| 777 | else |
| 778 | FD_ZERO(&lwriteset); |
| 779 | if (exceptset) |
| 780 | lexceptset = *exceptset; |
| 781 | else |
| 782 | FD_ZERO(&lexceptset); |
| 783 | |
| 784 | /* See what's set */ |
| 785 | nready = lwip_selscan(maxfdp1, &lreadset, &lwriteset, &lexceptset); |
| 786 | } |
| 787 | else |
| 788 | sys_sem_signal(selectsem); |
| 789 | |
| 790 | if (readset) |
| 791 | *readset = lreadset; |
| 792 | if (writeset) |
| 793 | *writeset = lwriteset; |
| 794 | if (exceptset) |
| 795 | *exceptset = lexceptset; |
| 796 | |
| 797 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready)); |
| 798 | set_errno(0); |
| 799 | |
| 800 | return nready; |
| 801 | } |
| 802 | |
| 803 | |
| 804 | static void |
| 805 | event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len) |
| 806 | { |
| 807 | int s; |
| 808 | struct lwip_socket *sock; |
| 809 | struct lwip_select_cb *scb; |
| 810 | |
| 811 | /* Get socket */ |
| 812 | if (conn) |
| 813 | { |
| 814 | s = conn->socket; |
| 815 | if (s < 0) |
| 816 | { |
| 817 | /* Data comes in right away after an accept, even though |
| 818 | * the server task might not have created a new socket yet. |
| 819 | * Just count down (or up) if that's the case and we |
| 820 | * will use the data later. Note that only receive events |
| 821 | * can happen before the new socket is set up. */ |
| 822 | if (evt == NETCONN_EVT_RCVPLUS) |
| 823 | conn->socket--; |
| 824 | return; |
| 825 | } |
| 826 | |
| 827 | sock = get_socket(s); |
| 828 | if (!sock) |
| 829 | return; |
| 830 | } |
| 831 | else |
| 832 | return; |
| 833 | |
| 834 | if (!selectsem) |
| 835 | selectsem = sys_sem_new(1); |
| 836 | |
| 837 | sys_sem_wait(selectsem); |
| 838 | /* Set event as required */ |
| 839 | switch (evt) |
| 840 | { |
| 841 | case NETCONN_EVT_RCVPLUS: |
| 842 | sock->rcvevent++; |
| 843 | break; |
| 844 | case NETCONN_EVT_RCVMINUS: |
| 845 | sock->rcvevent--; |
| 846 | break; |
| 847 | case NETCONN_EVT_SENDPLUS: |
| 848 | sock->sendevent = 1; |
| 849 | break; |
| 850 | case NETCONN_EVT_SENDMINUS: |
| 851 | sock->sendevent = 0; |
| 852 | break; |
| 853 | } |
| 854 | sys_sem_signal(selectsem); |
| 855 | |
| 856 | /* Now decide if anyone is waiting for this socket */ |
| 857 | /* NOTE: This code is written this way to protect the select link list |
| 858 | but to avoid a deadlock situation by releasing socksem before |
| 859 | signalling for the select. This means we need to go through the list |
| 860 | multiple times ONLY IF a select was actually waiting. We go through |
| 861 | the list the number of waiting select calls + 1. This list is |
| 862 | expected to be small. */ |
| 863 | while (1) |
| 864 | { |
| 865 | sys_sem_wait(selectsem); |
| 866 | for (scb = select_cb_list; scb; scb = scb->next) |
| 867 | { |
| 868 | if (scb->sem_signalled == 0) |
| 869 | { |
| 870 | /* Test this select call for our socket */ |
| 871 | if (scb->readset && FD_ISSET(s, scb->readset)) |
| 872 | if (sock->rcvevent) |
| 873 | break; |
| 874 | if (scb->writeset && FD_ISSET(s, scb->writeset)) |
| 875 | if (sock->sendevent) |
| 876 | break; |
| 877 | } |
| 878 | } |
| 879 | if (scb) |
| 880 | { |
| 881 | scb->sem_signalled = 1; |
| 882 | sys_sem_signal(selectsem); |
| 883 | sys_sem_signal(scb->sem); |
| 884 | } else { |
| 885 | sys_sem_signal(selectsem); |
| 886 | break; |
| 887 | } |
| 888 | } |
| 889 | |
| 890 | } |
| 891 | |
| 892 | |
| 893 | |
| 894 | |
| 895 | int lwip_shutdown(int s, int how) |
| 896 | { |
| 897 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how)); |
| 898 | return lwip_close(s); /* XXX temporary hack until proper implementation */ |
| 899 | } |
| 900 | |
| 901 | int lwip_getpeername (int s, struct sockaddr *name, socklen_t *namelen) |
| 902 | { |
| 903 | struct lwip_socket *sock; |
| 904 | struct sockaddr_in sin; |
| 905 | struct ip_addr naddr; |
| 906 | |
| 907 | sock = get_socket(s); |
| 908 | if (!sock) { |
| 909 | set_errno(EBADF); |
| 910 | return -1; |
| 911 | } |
| 912 | |
| 913 | memset(&sin, 0, sizeof(sin)); |
| 914 | sin.sin_len = sizeof(sin); |
| 915 | sin.sin_family = AF_INET; |
| 916 | |
| 917 | /* get the IP address and port of the remote host */ |
| 918 | netconn_peer(sock->conn, &naddr, &sin.sin_port); |
| 919 | |
| 920 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getpeername(%d, addr=", s)); |
| 921 | ip_addr_debug_print(SOCKETS_DEBUG, &naddr); |
| 922 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port)); |
| 923 | |
| 924 | sin.sin_port = htons(sin.sin_port); |
| 925 | sin.sin_addr.s_addr = naddr.addr; |
| 926 | |
| 927 | if (*namelen > sizeof(sin)) |
| 928 | *namelen = sizeof(sin); |
| 929 | |
| 930 | memcpy(name, &sin, *namelen); |
| 931 | sock_set_errno(sock, 0); |
| 932 | return 0; |
| 933 | } |
| 934 | |
| 935 | int lwip_getsockname (int s, struct sockaddr *name, socklen_t *namelen) |
| 936 | { |
| 937 | struct lwip_socket *sock; |
| 938 | struct sockaddr_in sin; |
| 939 | struct ip_addr *naddr; |
| 940 | |
| 941 | sock = get_socket(s); |
| 942 | if (!sock) { |
| 943 | set_errno(EBADF); |
| 944 | return -1; |
| 945 | } |
| 946 | |
| 947 | memset(&sin, 0, sizeof(sin)); |
| 948 | sin.sin_len = sizeof(sin); |
| 949 | sin.sin_family = AF_INET; |
| 950 | |
| 951 | /* get the IP address and port of the remote host */ |
| 952 | netconn_addr(sock->conn, &naddr, &sin.sin_port); |
| 953 | |
| 954 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockname(%d, addr=", s)); |
| 955 | ip_addr_debug_print(SOCKETS_DEBUG, naddr); |
| 956 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%d)\n", sin.sin_port)); |
| 957 | |
| 958 | sin.sin_port = htons(sin.sin_port); |
| 959 | sin.sin_addr.s_addr = naddr->addr; |
| 960 | |
| 961 | if (*namelen > sizeof(sin)) |
| 962 | *namelen = sizeof(sin); |
| 963 | |
| 964 | memcpy(name, &sin, *namelen); |
| 965 | sock_set_errno(sock, 0); |
| 966 | return 0; |
| 967 | } |
| 968 | |
| 969 | int lwip_getsockopt (int s, int level, int optname, void *optval, socklen_t *optlen) |
| 970 | { |
| 971 | int err = 0; |
| 972 | struct lwip_socket *sock = get_socket(s); |
| 973 | |
| 974 | if(!sock) { |
| 975 | set_errno(EBADF); |
| 976 | return -1; |
| 977 | } |
| 978 | |
| 979 | if( NULL == optval || NULL == optlen ) { |
| 980 | sock_set_errno( sock, EFAULT ); |
| 981 | return -1; |
| 982 | } |
| 983 | |
| 984 | /* Do length and type checks for the various options first, to keep it readable. */ |
| 985 | switch( level ) { |
| 986 | |
| 987 | /* Level: SOL_SOCKET */ |
| 988 | case SOL_SOCKET: |
| 989 | switch(optname) { |
| 990 | |
| 991 | case SO_ACCEPTCONN: |
| 992 | case SO_BROADCAST: |
| 993 | /* UNIMPL case SO_DEBUG: */ |
| 994 | /* UNIMPL case SO_DONTROUTE: */ |
| 995 | case SO_ERROR: |
| 996 | case SO_KEEPALIVE: |
| 997 | /* UNIMPL case SO_OOBINLINE: */ |
| 998 | /* UNIMPL case SO_RCVBUF: */ |
| 999 | /* UNIMPL case SO_SNDBUF: */ |
| 1000 | /* UNIMPL case SO_RCVLOWAT: */ |
| 1001 | /* UNIMPL case SO_SNDLOWAT: */ |
| 1002 | #if SO_REUSE |
| 1003 | case SO_REUSEADDR: |
| 1004 | case SO_REUSEPORT: |
| 1005 | #endif /* SO_REUSE */ |
| 1006 | case SO_TYPE: |
| 1007 | /* UNIMPL case SO_USELOOPBACK: */ |
| 1008 | if( *optlen < sizeof(int) ) { |
| 1009 | err = EINVAL; |
| 1010 | } |
| 1011 | break; |
| 1012 | |
| 1013 | default: |
| 1014 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1015 | err = ENOPROTOOPT; |
| 1016 | } /* switch */ |
| 1017 | break; |
| 1018 | |
| 1019 | /* Level: IPPROTO_IP */ |
| 1020 | case IPPROTO_IP: |
| 1021 | switch(optname) { |
| 1022 | /* UNIMPL case IP_HDRINCL: */ |
| 1023 | /* UNIMPL case IP_RCVDSTADDR: */ |
| 1024 | /* UNIMPL case IP_RCVIF: */ |
| 1025 | case IP_TTL: |
| 1026 | case IP_TOS: |
| 1027 | if( *optlen < sizeof(int) ) { |
| 1028 | err = EINVAL; |
| 1029 | } |
| 1030 | break; |
| 1031 | |
| 1032 | default: |
| 1033 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1034 | err = ENOPROTOOPT; |
| 1035 | } /* switch */ |
| 1036 | break; |
| 1037 | |
| 1038 | /* Level: IPPROTO_TCP */ |
| 1039 | case IPPROTO_TCP: |
| 1040 | if( *optlen < sizeof(int) ) { |
| 1041 | err = EINVAL; |
| 1042 | break; |
| 1043 | } |
| 1044 | |
| 1045 | /* If this is no TCP socket, ignore any options. */ |
| 1046 | if ( sock->conn->type != NETCONN_TCP ) return 0; |
| 1047 | |
| 1048 | switch( optname ) { |
| 1049 | case TCP_NODELAY: |
| 1050 | case TCP_KEEPALIVE: |
| 1051 | break; |
| 1052 | |
| 1053 | default: |
| 1054 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1055 | err = ENOPROTOOPT; |
| 1056 | } /* switch */ |
| 1057 | break; |
| 1058 | |
| 1059 | /* UNDEFINED LEVEL */ |
| 1060 | default: |
| 1061 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname)); |
| 1062 | err = ENOPROTOOPT; |
| 1063 | } /* switch */ |
| 1064 | |
| 1065 | |
| 1066 | if( 0 != err ) { |
| 1067 | sock_set_errno(sock, err); |
| 1068 | return -1; |
| 1069 | } |
| 1070 | |
| 1071 | |
| 1072 | |
| 1073 | /* Now do the actual option processing */ |
| 1074 | |
| 1075 | switch(level) { |
| 1076 | |
| 1077 | /* Level: SOL_SOCKET */ |
| 1078 | case SOL_SOCKET: |
| 1079 | switch( optname ) { |
| 1080 | |
| 1081 | /* The option flags */ |
| 1082 | case SO_ACCEPTCONN: |
| 1083 | case SO_BROADCAST: |
| 1084 | /* UNIMPL case SO_DEBUG: */ |
| 1085 | /* UNIMPL case SO_DONTROUTE: */ |
| 1086 | case SO_KEEPALIVE: |
| 1087 | /* UNIMPL case SO_OOBINCLUDE: */ |
| 1088 | #if SO_REUSE |
| 1089 | case SO_REUSEADDR: |
| 1090 | case SO_REUSEPORT: |
| 1091 | #endif /* SO_REUSE */ |
| 1092 | /*case SO_USELOOPBACK: UNIMPL */ |
| 1093 | *(int*)optval = sock->conn->pcb.tcp->so_options & optname; |
| 1094 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, optname=0x%x, ..) = %s\n", s, optname, (*(int*)optval?"on":"off"))); |
| 1095 | break; |
| 1096 | |
| 1097 | case SO_TYPE: |
| 1098 | switch (sock->conn->type) { |
| 1099 | case NETCONN_RAW: |
| 1100 | *(int*)optval = SOCK_RAW; |
| 1101 | break; |
| 1102 | case NETCONN_TCP: |
| 1103 | *(int*)optval = SOCK_STREAM; |
| 1104 | break; |
| 1105 | case NETCONN_UDP: |
| 1106 | case NETCONN_UDPLITE: |
| 1107 | case NETCONN_UDPNOCHKSUM: |
| 1108 | *(int*)optval = SOCK_DGRAM; |
| 1109 | break; |
| 1110 | default: /* unrecognized socket type */ |
| 1111 | *(int*)optval = sock->conn->type; |
| 1112 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n", s, *(int *)optval)); |
| 1113 | } /* switch */ |
| 1114 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE) = %d\n", s, *(int *)optval)); |
| 1115 | break; |
| 1116 | |
| 1117 | case SO_ERROR: |
| 1118 | *(int *)optval = sock->err; |
| 1119 | sock->err = 0; |
| 1120 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n", s, *(int *)optval)); |
| 1121 | break; |
| 1122 | } /* switch */ |
| 1123 | break; |
| 1124 | |
| 1125 | /* Level: IPPROTO_IP */ |
| 1126 | case IPPROTO_IP: |
| 1127 | switch( optname ) { |
| 1128 | case IP_TTL: |
| 1129 | *(int*)optval = sock->conn->pcb.tcp->ttl; |
| 1130 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TTL) = %d\n", s, *(int *)optval)); |
| 1131 | break; |
| 1132 | case IP_TOS: |
| 1133 | *(int*)optval = sock->conn->pcb.tcp->tos; |
| 1134 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TOS) = %d\n", s, *(int *)optval)); |
| 1135 | break; |
| 1136 | } /* switch */ |
| 1137 | break; |
| 1138 | |
| 1139 | /* Level: IPPROTO_TCP */ |
| 1140 | case IPPROTO_TCP: |
| 1141 | switch( optname ) { |
| 1142 | case TCP_NODELAY: |
| 1143 | *(int*)optval = (sock->conn->pcb.tcp->flags & TF_NODELAY); |
| 1144 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_NODELAY) = %s\n", s, (*(int*)optval)?"on":"off") ); |
| 1145 | break; |
| 1146 | case TCP_KEEPALIVE: |
| 1147 | *(int*)optval = (int)sock->conn->pcb.tcp->keepalive; |
| 1148 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPALIVE) = %d\n", s, *(int *)optval)); |
| 1149 | break; |
| 1150 | } /* switch */ |
| 1151 | break; |
| 1152 | } |
| 1153 | |
| 1154 | |
| 1155 | sock_set_errno(sock, err); |
| 1156 | return err ? -1 : 0; |
| 1157 | } |
| 1158 | |
| 1159 | int lwip_setsockopt (int s, int level, int optname, const void *optval, socklen_t optlen) |
| 1160 | { |
| 1161 | struct lwip_socket *sock = get_socket(s); |
| 1162 | int err = 0; |
| 1163 | |
| 1164 | if(!sock) { |
| 1165 | set_errno(EBADF); |
| 1166 | return -1; |
| 1167 | } |
| 1168 | |
| 1169 | if( NULL == optval ) { |
| 1170 | sock_set_errno( sock, EFAULT ); |
| 1171 | return -1; |
| 1172 | } |
| 1173 | |
| 1174 | |
| 1175 | /* Do length and type checks for the various options first, to keep it readable. */ |
| 1176 | switch( level ) { |
| 1177 | |
| 1178 | /* Level: SOL_SOCKET */ |
| 1179 | case SOL_SOCKET: |
| 1180 | switch(optname) { |
| 1181 | |
| 1182 | case SO_BROADCAST: |
| 1183 | /* UNIMPL case SO_DEBUG: */ |
| 1184 | /* UNIMPL case SO_DONTROUTE: */ |
| 1185 | case SO_KEEPALIVE: |
| 1186 | /* UNIMPL case SO_OOBINLINE: */ |
| 1187 | /* UNIMPL case SO_RCVBUF: */ |
| 1188 | /* UNIMPL case SO_SNDBUF: */ |
| 1189 | /* UNIMPL case SO_RCVLOWAT: */ |
| 1190 | /* UNIMPL case SO_SNDLOWAT: */ |
| 1191 | #if SO_REUSE |
| 1192 | case SO_REUSEADDR: |
| 1193 | case SO_REUSEPORT: |
| 1194 | #endif /* SO_REUSE */ |
| 1195 | /* UNIMPL case SO_USELOOPBACK: */ |
| 1196 | if( optlen < sizeof(int) ) { |
| 1197 | err = EINVAL; |
| 1198 | } |
| 1199 | break; |
| 1200 | default: |
| 1201 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1202 | err = ENOPROTOOPT; |
| 1203 | } /* switch */ |
| 1204 | break; |
| 1205 | |
| 1206 | /* Level: IPPROTO_IP */ |
| 1207 | case IPPROTO_IP: |
| 1208 | switch(optname) { |
| 1209 | /* UNIMPL case IP_HDRINCL: */ |
| 1210 | /* UNIMPL case IP_RCVDSTADDR: */ |
| 1211 | /* UNIMPL case IP_RCVIF: */ |
| 1212 | case IP_TTL: |
| 1213 | case IP_TOS: |
| 1214 | if( optlen < sizeof(int) ) { |
| 1215 | err = EINVAL; |
| 1216 | } |
| 1217 | break; |
| 1218 | default: |
| 1219 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1220 | err = ENOPROTOOPT; |
| 1221 | } /* switch */ |
| 1222 | break; |
| 1223 | |
| 1224 | /* Level: IPPROTO_TCP */ |
| 1225 | case IPPROTO_TCP: |
| 1226 | if( optlen < sizeof(int) ) { |
| 1227 | err = EINVAL; |
| 1228 | break; |
| 1229 | } |
| 1230 | |
| 1231 | /* If this is no TCP socket, ignore any options. */ |
| 1232 | if ( sock->conn->type != NETCONN_TCP ) return 0; |
| 1233 | |
| 1234 | switch( optname ) { |
| 1235 | case TCP_NODELAY: |
| 1236 | case TCP_KEEPALIVE: |
| 1237 | break; |
| 1238 | |
| 1239 | default: |
| 1240 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", s, optname)); |
| 1241 | err = ENOPROTOOPT; |
| 1242 | } /* switch */ |
| 1243 | break; |
| 1244 | |
| 1245 | /* UNDEFINED LEVEL */ |
| 1246 | default: |
| 1247 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", s, level, optname)); |
| 1248 | err = ENOPROTOOPT; |
| 1249 | } /* switch */ |
| 1250 | |
| 1251 | |
| 1252 | if( 0 != err ) { |
| 1253 | sock_set_errno(sock, err); |
| 1254 | return -1; |
| 1255 | } |
| 1256 | |
| 1257 | |
| 1258 | |
| 1259 | /* Now do the actual option processing */ |
| 1260 | |
| 1261 | switch(level) { |
| 1262 | |
| 1263 | /* Level: SOL_SOCKET */ |
| 1264 | case SOL_SOCKET: |
| 1265 | switch(optname) { |
| 1266 | |
| 1267 | /* The option flags */ |
| 1268 | case SO_BROADCAST: |
| 1269 | /* UNIMPL case SO_DEBUG: */ |
| 1270 | /* UNIMPL case SO_DONTROUTE: */ |
| 1271 | case SO_KEEPALIVE: |
| 1272 | /* UNIMPL case SO_OOBINCLUDE: */ |
| 1273 | #if SO_REUSE |
| 1274 | case SO_REUSEADDR: |
| 1275 | case SO_REUSEPORT: |
| 1276 | #endif /* SO_REUSE */ |
| 1277 | /* UNIMPL case SO_USELOOPBACK: */ |
| 1278 | if ( *(int*)optval ) { |
| 1279 | sock->conn->pcb.tcp->so_options |= optname; |
| 1280 | } else { |
| 1281 | sock->conn->pcb.tcp->so_options &= ~optname; |
| 1282 | } |
| 1283 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, optname=0x%x, ..) -> %s\n", s, optname, (*(int*)optval?"on":"off"))); |
| 1284 | break; |
| 1285 | } /* switch */ |
| 1286 | break; |
| 1287 | |
| 1288 | /* Level: IPPROTO_IP */ |
| 1289 | case IPPROTO_IP: |
| 1290 | switch( optname ) { |
| 1291 | case IP_TTL: |
| 1292 | sock->conn->pcb.tcp->ttl = (u8_t)(*(int*)optval); |
| 1293 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TTL, ..) -> %u\n", s, sock->conn->pcb.tcp->ttl)); |
| 1294 | break; |
| 1295 | case IP_TOS: |
| 1296 | sock->conn->pcb.tcp->tos = (u8_t)(*(int*)optval); |
| 1297 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TOS, ..)-> %u\n", s, sock->conn->pcb.tcp->tos)); |
| 1298 | break; |
| 1299 | } /* switch */ |
| 1300 | break; |
| 1301 | |
| 1302 | /* Level: IPPROTO_TCP */ |
| 1303 | case IPPROTO_TCP: |
| 1304 | switch( optname ) { |
| 1305 | case TCP_NODELAY: |
| 1306 | if ( *(int*)optval ) { |
| 1307 | sock->conn->pcb.tcp->flags |= TF_NODELAY; |
| 1308 | } else { |
| 1309 | sock->conn->pcb.tcp->flags &= ~TF_NODELAY; |
| 1310 | } |
| 1311 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_NODELAY) -> %s\n", s, (*(int *)optval)?"on":"off") ); |
| 1312 | break; |
| 1313 | case TCP_KEEPALIVE: |
| 1314 | sock->conn->pcb.tcp->keepalive = (u32_t)(*(int*)optval); |
| 1315 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) -> %lu\n", s, sock->conn->pcb.tcp->keepalive)); |
| 1316 | break; |
| 1317 | } /* switch */ |
| 1318 | break; |
| 1319 | } /* switch */ |
| 1320 | |
| 1321 | sock_set_errno(sock, err); |
| 1322 | return err ? -1 : 0; |
| 1323 | } |
| 1324 | |
| 1325 | int lwip_ioctl(int s, long cmd, void *argp) |
| 1326 | { |
| 1327 | struct lwip_socket *sock = get_socket(s); |
| 1328 | |
| 1329 | if(!sock) { |
| 1330 | set_errno(EBADF); |
| 1331 | return -1; |
| 1332 | } |
| 1333 | |
| 1334 | switch (cmd) { |
| 1335 | case FIONREAD: |
| 1336 | if (!argp) { |
| 1337 | sock_set_errno(sock, EINVAL); |
| 1338 | return -1; |
| 1339 | } |
| 1340 | |
| 1341 | *((u16_t*)argp) = sock->conn->recv_avail; |
| 1342 | |
| 1343 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %u\n", s, argp, *((u16_t*)argp))); |
| 1344 | sock_set_errno(sock, 0); |
| 1345 | return 0; |
| 1346 | |
| 1347 | case FIONBIO: |
| 1348 | if (argp && *(u32_t*)argp) |
| 1349 | sock->flags |= O_NONBLOCK; |
| 1350 | else |
| 1351 | sock->flags &= ~O_NONBLOCK; |
| 1352 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONBIO, %d)\n", s, !!(sock->flags & O_NONBLOCK))); |
| 1353 | sock_set_errno(sock, 0); |
| 1354 | return 0; |
| 1355 | |
| 1356 | default: |
| 1357 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, UNIMPL: 0x%lx, %p)\n", s, cmd, argp)); |
| 1358 | sock_set_errno(sock, ENOSYS); /* not yet implemented */ |
| 1359 | return -1; |
| 1360 | } |
| 1361 | } |
| 1362 | |