Greg Hartman | 76d05dc | 2016-11-23 15:51:27 -0800 | [diff] [blame] | 1 | /** |
| 2 | * @file |
| 3 | * Sockets BSD-Like API module |
| 4 | * |
| 5 | */ |
| 6 | |
| 7 | /* |
| 8 | * Copyright (c) 2001-2004 Swedish Institute of Computer Science. |
| 9 | * All rights reserved. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without modification, |
| 12 | * are permitted provided that the following conditions are met: |
| 13 | * |
| 14 | * 1. Redistributions of source code must retain the above copyright notice, |
| 15 | * this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 17 | * this list of conditions and the following disclaimer in the documentation |
| 18 | * and/or other materials provided with the distribution. |
| 19 | * 3. The name of the author may not be used to endorse or promote products |
| 20 | * derived from this software without specific prior written permission. |
| 21 | * |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 23 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 24 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT |
| 25 | * SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 26 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT |
| 27 | * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING |
| 30 | * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
| 31 | * OF SUCH DAMAGE. |
| 32 | * |
| 33 | * This file is part of the lwIP TCP/IP stack. |
| 34 | * |
| 35 | * Author: Adam Dunkels <adam@sics.se> |
| 36 | * |
| 37 | * Improved by Marc Boucher <marc@mbsi.ca> and David Haas <dhaas@alum.rpi.edu> |
| 38 | * |
| 39 | */ |
| 40 | |
| 41 | #include "lwip/opt.h" |
| 42 | |
| 43 | #if LWIP_SOCKET /* don't build if not configured for use in lwipopts.h */ |
| 44 | |
| 45 | #include "lwip/sockets.h" |
| 46 | #include "lwip/api.h" |
| 47 | #include "lwip/sys.h" |
| 48 | #include "lwip/igmp.h" |
| 49 | #include "lwip/inet.h" |
| 50 | #include "lwip/tcp.h" |
| 51 | #include "lwip/raw.h" |
| 52 | #include "lwip/udp.h" |
| 53 | #include "lwip/tcpip.h" |
| 54 | #include "lwip/pbuf.h" |
| 55 | #if LWIP_CHECKSUM_ON_COPY |
| 56 | #include "lwip/inet_chksum.h" |
| 57 | #endif |
| 58 | |
| 59 | #include <string.h> |
| 60 | |
| 61 | #define NUM_SOCKETS MEMP_NUM_NETCONN |
| 62 | |
| 63 | /** Contains all internal pointers and states used for a socket */ |
| 64 | struct lwip_sock { |
| 65 | /** sockets currently are built on netconns, each socket has one netconn */ |
| 66 | struct netconn *conn; |
| 67 | /** data that was left from the previous read */ |
| 68 | void *lastdata; |
| 69 | /** offset in the data that was left from the previous read */ |
| 70 | u16_t lastoffset; |
| 71 | /** number of times data was received, set by event_callback(), |
| 72 | tested by the receive and select functions */ |
| 73 | s16_t rcvevent; |
| 74 | /** number of times data was ACKed (free send buffer), set by event_callback(), |
| 75 | tested by select */ |
| 76 | u16_t sendevent; |
| 77 | /** error happened for this socket, set by event_callback(), tested by select */ |
| 78 | u16_t errevent; |
| 79 | /** last error that occurred on this socket */ |
| 80 | int err; |
| 81 | /** counter of how many threads are waiting for this socket using select */ |
| 82 | int select_waiting; |
| 83 | }; |
| 84 | |
| 85 | /** Description for a task waiting in select */ |
| 86 | struct lwip_select_cb { |
| 87 | /** Pointer to the next waiting task */ |
| 88 | struct lwip_select_cb *next; |
| 89 | /** Pointer to the previous waiting task */ |
| 90 | struct lwip_select_cb *prev; |
| 91 | /** readset passed to select */ |
| 92 | fd_set *readset; |
| 93 | /** writeset passed to select */ |
| 94 | fd_set *writeset; |
| 95 | /** unimplemented: exceptset passed to select */ |
| 96 | fd_set *exceptset; |
| 97 | /** don't signal the same semaphore twice: set to 1 when signalled */ |
| 98 | int sem_signalled; |
| 99 | /** semaphore to wake up a task waiting for select */ |
| 100 | sys_sem_t sem; |
| 101 | }; |
| 102 | |
| 103 | /** This struct is used to pass data to the set/getsockopt_internal |
| 104 | * functions running in tcpip_thread context (only a void* is allowed) */ |
| 105 | struct lwip_setgetsockopt_data { |
| 106 | /** socket struct for which to change options */ |
| 107 | struct lwip_sock *sock; |
| 108 | #ifdef LWIP_DEBUG |
| 109 | /** socket index for which to change options */ |
| 110 | int s; |
| 111 | #endif /* LWIP_DEBUG */ |
| 112 | /** level of the option to process */ |
| 113 | int level; |
| 114 | /** name of the option to process */ |
| 115 | int optname; |
| 116 | /** set: value to set the option to |
| 117 | * get: value of the option is stored here */ |
| 118 | void *optval; |
| 119 | /** size of *optval */ |
| 120 | socklen_t *optlen; |
| 121 | /** if an error occures, it is temporarily stored here */ |
| 122 | err_t err; |
| 123 | }; |
| 124 | |
| 125 | /** The global array of available sockets */ |
| 126 | static struct lwip_sock sockets[NUM_SOCKETS]; |
| 127 | /** The global list of tasks waiting for select */ |
| 128 | static struct lwip_select_cb *select_cb_list; |
| 129 | /** This counter is increased from lwip_select when the list is chagned |
| 130 | and checked in event_callback to see if it has changed. */ |
| 131 | static volatile int select_cb_ctr; |
| 132 | |
| 133 | /** Table to quickly map an lwIP error (err_t) to a socket error |
| 134 | * by using -err as an index */ |
| 135 | static const int err_to_errno_table[] = { |
| 136 | 0, /* ERR_OK 0 No error, everything OK. */ |
| 137 | ENOMEM, /* ERR_MEM -1 Out of memory error. */ |
| 138 | ENOBUFS, /* ERR_BUF -2 Buffer error. */ |
| 139 | EWOULDBLOCK, /* ERR_TIMEOUT -3 Timeout */ |
| 140 | EHOSTUNREACH, /* ERR_RTE -4 Routing problem. */ |
| 141 | EINPROGRESS, /* ERR_INPROGRESS -5 Operation in progress */ |
| 142 | EINVAL, /* ERR_VAL -6 Illegal value. */ |
| 143 | EWOULDBLOCK, /* ERR_WOULDBLOCK -7 Operation would block. */ |
| 144 | EADDRINUSE, /* ERR_USE -8 Address in use. */ |
| 145 | EALREADY, /* ERR_ISCONN -9 Already connected. */ |
| 146 | ECONNABORTED, /* ERR_ABRT -10 Connection aborted. */ |
| 147 | ECONNRESET, /* ERR_RST -11 Connection reset. */ |
| 148 | ENOTCONN, /* ERR_CLSD -12 Connection closed. */ |
| 149 | ENOTCONN, /* ERR_CONN -13 Not connected. */ |
| 150 | EIO, /* ERR_ARG -14 Illegal argument. */ |
| 151 | -1, /* ERR_IF -15 Low-level netif error */ |
| 152 | }; |
| 153 | |
| 154 | #define ERR_TO_ERRNO_TABLE_SIZE \ |
| 155 | (sizeof(err_to_errno_table)/sizeof(err_to_errno_table[0])) |
| 156 | |
| 157 | #define err_to_errno(err) \ |
| 158 | ((unsigned)(-(err)) < ERR_TO_ERRNO_TABLE_SIZE ? \ |
| 159 | err_to_errno_table[-(err)] : EIO) |
| 160 | |
| 161 | #ifdef ERRNO |
| 162 | #ifndef set_errno |
| 163 | #define set_errno(err) errno = (err) |
| 164 | #endif |
| 165 | #else /* ERRNO */ |
| 166 | #define set_errno(err) |
| 167 | #endif /* ERRNO */ |
| 168 | |
| 169 | #define sock_set_errno(sk, e) do { \ |
| 170 | sk->err = (e); \ |
| 171 | set_errno(sk->err); \ |
| 172 | } while (0) |
| 173 | |
| 174 | /* Forward delcaration of some functions */ |
| 175 | static void event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len); |
| 176 | static void lwip_getsockopt_internal(void *arg); |
| 177 | static void lwip_setsockopt_internal(void *arg); |
| 178 | |
| 179 | /** |
| 180 | * Initialize this module. This function has to be called before any other |
| 181 | * functions in this module! |
| 182 | */ |
| 183 | void |
| 184 | lwip_socket_init(void) |
| 185 | { |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Map a externally used socket index to the internal socket representation. |
| 190 | * |
| 191 | * @param s externally used socket index |
| 192 | * @return struct lwip_sock for the socket or NULL if not found |
| 193 | */ |
| 194 | static struct lwip_sock * |
| 195 | get_socket(int s) |
| 196 | { |
| 197 | struct lwip_sock *sock; |
| 198 | |
| 199 | if ((s < 0) || (s >= NUM_SOCKETS)) { |
| 200 | LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): invalid\n", s)); |
| 201 | set_errno(EBADF); |
| 202 | return NULL; |
| 203 | } |
| 204 | |
| 205 | sock = &sockets[s]; |
| 206 | |
| 207 | if (!sock->conn) { |
| 208 | LWIP_DEBUGF(SOCKETS_DEBUG, ("get_socket(%d): not active\n", s)); |
| 209 | set_errno(EBADF); |
| 210 | return NULL; |
| 211 | } |
| 212 | |
| 213 | return sock; |
| 214 | } |
| 215 | |
| 216 | /** |
| 217 | * Same as get_socket but doesn't set errno |
| 218 | * |
| 219 | * @param s externally used socket index |
| 220 | * @return struct lwip_sock for the socket or NULL if not found |
| 221 | */ |
| 222 | static struct lwip_sock * |
| 223 | tryget_socket(int s) |
| 224 | { |
| 225 | if ((s < 0) || (s >= NUM_SOCKETS)) { |
| 226 | return NULL; |
| 227 | } |
| 228 | if (!sockets[s].conn) { |
| 229 | return NULL; |
| 230 | } |
| 231 | return &sockets[s]; |
| 232 | } |
| 233 | |
| 234 | /** |
| 235 | * Allocate a new socket for a given netconn. |
| 236 | * |
| 237 | * @param newconn the netconn for which to allocate a socket |
| 238 | * @param accepted 1 if socket has been created by accept(), |
| 239 | * 0 if socket has been created by socket() |
| 240 | * @return the index of the new socket; -1 on error |
| 241 | */ |
| 242 | static int |
| 243 | alloc_socket(struct netconn *newconn, int accepted) |
| 244 | { |
| 245 | int i; |
| 246 | SYS_ARCH_DECL_PROTECT(lev); |
| 247 | |
| 248 | /* allocate a new socket identifier */ |
| 249 | for (i = 0; i < NUM_SOCKETS; ++i) { |
| 250 | /* Protect socket array */ |
| 251 | SYS_ARCH_PROTECT(lev); |
| 252 | if (!sockets[i].conn) { |
| 253 | sockets[i].conn = newconn; |
| 254 | /* The socket is not yet known to anyone, so no need to protect |
| 255 | after having marked it as used. */ |
| 256 | SYS_ARCH_UNPROTECT(lev); |
| 257 | sockets[i].lastdata = NULL; |
| 258 | sockets[i].lastoffset = 0; |
| 259 | sockets[i].rcvevent = 0; |
| 260 | /* TCP sendbuf is empty, but the socket is not yet writable until connected |
| 261 | * (unless it has been created by accept()). */ |
| 262 | sockets[i].sendevent = (newconn->type == NETCONN_TCP ? (accepted != 0) : 1); |
| 263 | sockets[i].errevent = 0; |
| 264 | sockets[i].err = 0; |
| 265 | sockets[i].select_waiting = 0; |
| 266 | return i; |
| 267 | } |
| 268 | SYS_ARCH_UNPROTECT(lev); |
| 269 | } |
| 270 | return -1; |
| 271 | } |
| 272 | |
| 273 | /** Free a socket. The socket's netconn must have been |
| 274 | * delete before! |
| 275 | * |
| 276 | * @param sock the socket to free |
| 277 | * @param is_tcp != 0 for TCP sockets, used to free lastdata |
| 278 | */ |
| 279 | static void |
| 280 | free_socket(struct lwip_sock *sock, int is_tcp) |
| 281 | { |
| 282 | void *lastdata; |
| 283 | SYS_ARCH_DECL_PROTECT(lev); |
| 284 | |
| 285 | lastdata = sock->lastdata; |
| 286 | sock->lastdata = NULL; |
| 287 | sock->lastoffset = 0; |
| 288 | sock->err = 0; |
| 289 | |
| 290 | /* Protect socket array */ |
| 291 | SYS_ARCH_PROTECT(lev); |
| 292 | sock->conn = NULL; |
| 293 | SYS_ARCH_UNPROTECT(lev); |
| 294 | /* don't use 'sock' after this line, as another task might have allocated it */ |
| 295 | |
| 296 | if (lastdata != NULL) { |
| 297 | if (is_tcp) { |
| 298 | pbuf_free((struct pbuf *)lastdata); |
| 299 | } else { |
| 300 | netbuf_delete((struct netbuf *)lastdata); |
| 301 | } |
| 302 | } |
| 303 | } |
| 304 | |
| 305 | /* Below this, the well-known socket functions are implemented. |
| 306 | * Use google.com or opengroup.org to get a good description :-) |
| 307 | * |
| 308 | * Exceptions are documented! |
| 309 | */ |
| 310 | |
| 311 | int |
| 312 | lwip_accept(int s, struct sockaddr *addr, socklen_t *addrlen) |
| 313 | { |
| 314 | struct lwip_sock *sock, *nsock; |
| 315 | struct netconn *newconn; |
| 316 | ip_addr_t naddr; |
| 317 | u16_t port; |
| 318 | int newsock; |
| 319 | struct sockaddr_in sin; |
| 320 | err_t err; |
| 321 | SYS_ARCH_DECL_PROTECT(lev); |
| 322 | |
| 323 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d)...\n", s)); |
| 324 | sock = get_socket(s); |
| 325 | if (!sock) { |
| 326 | return -1; |
| 327 | } |
| 328 | |
| 329 | if (netconn_is_nonblocking(sock->conn) && (sock->rcvevent <= 0)) { |
| 330 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): returning EWOULDBLOCK\n", s)); |
| 331 | sock_set_errno(sock, EWOULDBLOCK); |
| 332 | return -1; |
| 333 | } |
| 334 | |
| 335 | /* wait for a new connection */ |
| 336 | err = netconn_accept(sock->conn, &newconn); |
| 337 | if (err != ERR_OK) { |
| 338 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): netconn_acept failed, err=%d\n", s, err)); |
| 339 | sock_set_errno(sock, err_to_errno(err)); |
| 340 | return -1; |
| 341 | } |
| 342 | LWIP_ASSERT("newconn != NULL", newconn != NULL); |
| 343 | /* Prevent automatic window updates, we do this on our own! */ |
| 344 | netconn_set_noautorecved(newconn, 1); |
| 345 | |
| 346 | /* get the IP address and port of the remote host */ |
| 347 | err = netconn_peer(newconn, &naddr, &port); |
| 348 | if (err != ERR_OK) { |
| 349 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d): netconn_peer failed, err=%d\n", s, err)); |
| 350 | netconn_delete(newconn); |
| 351 | sock_set_errno(sock, err_to_errno(err)); |
| 352 | return -1; |
| 353 | } |
| 354 | |
| 355 | /* Note that POSIX only requires us to check addr is non-NULL. addrlen must |
| 356 | * not be NULL if addr is valid. |
| 357 | */ |
| 358 | if (NULL != addr) { |
| 359 | LWIP_ASSERT("addr valid but addrlen NULL", addrlen != NULL); |
| 360 | memset(&sin, 0, sizeof(sin)); |
| 361 | sin.sin_len = sizeof(sin); |
| 362 | sin.sin_family = AF_INET; |
| 363 | sin.sin_port = htons(port); |
| 364 | inet_addr_from_ipaddr(&sin.sin_addr, &naddr); |
| 365 | |
| 366 | if (*addrlen > sizeof(sin)) |
| 367 | *addrlen = sizeof(sin); |
| 368 | |
| 369 | MEMCPY(addr, &sin, *addrlen); |
| 370 | } |
| 371 | |
| 372 | newsock = alloc_socket(newconn, 1); |
| 373 | if (newsock == -1) { |
| 374 | netconn_delete(newconn); |
| 375 | sock_set_errno(sock, ENFILE); |
| 376 | return -1; |
| 377 | } |
| 378 | LWIP_ASSERT("invalid socket index", (newsock >= 0) && (newsock < NUM_SOCKETS)); |
| 379 | LWIP_ASSERT("newconn->callback == event_callback", newconn->callback == event_callback); |
| 380 | nsock = &sockets[newsock]; |
| 381 | |
| 382 | /* See event_callback: If data comes in right away after an accept, even |
| 383 | * though the server task might not have created a new socket yet. |
| 384 | * In that case, newconn->socket is counted down (newconn->socket--), |
| 385 | * so nsock->rcvevent is >= 1 here! |
| 386 | */ |
| 387 | SYS_ARCH_PROTECT(lev); |
| 388 | nsock->rcvevent += (s16_t)(-1 - newconn->socket); |
| 389 | newconn->socket = newsock; |
| 390 | SYS_ARCH_UNPROTECT(lev); |
| 391 | |
| 392 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_accept(%d) returning new sock=%d addr=", s, newsock)); |
| 393 | ip_addr_debug_print(SOCKETS_DEBUG, &naddr); |
| 394 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F"\n", port)); |
| 395 | |
| 396 | sock_set_errno(sock, 0); |
| 397 | return newsock; |
| 398 | } |
| 399 | |
| 400 | int |
| 401 | lwip_bind(int s, const struct sockaddr *name, socklen_t namelen) |
| 402 | { |
| 403 | struct lwip_sock *sock; |
| 404 | ip_addr_t local_addr; |
| 405 | u16_t local_port; |
| 406 | err_t err; |
| 407 | const struct sockaddr_in *name_in; |
| 408 | |
| 409 | sock = get_socket(s); |
| 410 | if (!sock) { |
| 411 | return -1; |
| 412 | } |
| 413 | |
| 414 | /* check size, familiy and alignment of 'name' */ |
| 415 | LWIP_ERROR("lwip_bind: invalid address", ((namelen == sizeof(struct sockaddr_in)) && |
| 416 | ((name->sa_family) == AF_INET) && ((((mem_ptr_t)name) % 4) == 0)), |
| 417 | sock_set_errno(sock, err_to_errno(ERR_ARG)); return -1;); |
| 418 | name_in = (const struct sockaddr_in *)(void*)name; |
| 419 | |
| 420 | inet_addr_to_ipaddr(&local_addr, &name_in->sin_addr); |
| 421 | local_port = name_in->sin_port; |
| 422 | |
| 423 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d, addr=", s)); |
| 424 | ip_addr_debug_print(SOCKETS_DEBUG, &local_addr); |
| 425 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", ntohs(local_port))); |
| 426 | |
| 427 | err = netconn_bind(sock->conn, &local_addr, ntohs(local_port)); |
| 428 | |
| 429 | if (err != ERR_OK) { |
| 430 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) failed, err=%d\n", s, err)); |
| 431 | sock_set_errno(sock, err_to_errno(err)); |
| 432 | return -1; |
| 433 | } |
| 434 | |
| 435 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_bind(%d) succeeded\n", s)); |
| 436 | sock_set_errno(sock, 0); |
| 437 | return 0; |
| 438 | } |
| 439 | |
| 440 | int |
| 441 | lwip_close(int s) |
| 442 | { |
| 443 | struct lwip_sock *sock; |
| 444 | int is_tcp = 0; |
| 445 | |
| 446 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_close(%d)\n", s)); |
| 447 | |
| 448 | sock = get_socket(s); |
| 449 | if (!sock) { |
| 450 | return -1; |
| 451 | } |
| 452 | |
| 453 | if(sock->conn != NULL) { |
| 454 | is_tcp = netconn_type(sock->conn) == NETCONN_TCP; |
| 455 | } else { |
| 456 | LWIP_ASSERT("sock->lastdata == NULL", sock->lastdata == NULL); |
| 457 | } |
| 458 | |
| 459 | netconn_delete(sock->conn); |
| 460 | |
| 461 | free_socket(sock, is_tcp); |
| 462 | set_errno(0); |
| 463 | return 0; |
| 464 | } |
| 465 | |
| 466 | int |
| 467 | lwip_connect(int s, const struct sockaddr *name, socklen_t namelen) |
| 468 | { |
| 469 | struct lwip_sock *sock; |
| 470 | err_t err; |
| 471 | const struct sockaddr_in *name_in; |
| 472 | |
| 473 | sock = get_socket(s); |
| 474 | if (!sock) { |
| 475 | return -1; |
| 476 | } |
| 477 | |
| 478 | /* check size, familiy and alignment of 'name' */ |
| 479 | LWIP_ERROR("lwip_connect: invalid address", ((namelen == sizeof(struct sockaddr_in)) && |
| 480 | ((name->sa_family) == AF_INET) && ((((mem_ptr_t)name) % 4) == 0)), |
| 481 | sock_set_errno(sock, err_to_errno(ERR_ARG)); return -1;); |
| 482 | name_in = (const struct sockaddr_in *)(void*)name; |
| 483 | |
| 484 | if (name_in->sin_family == AF_UNSPEC) { |
| 485 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, AF_UNSPEC)\n", s)); |
| 486 | err = netconn_disconnect(sock->conn); |
| 487 | } else { |
| 488 | ip_addr_t remote_addr; |
| 489 | u16_t remote_port; |
| 490 | |
| 491 | inet_addr_to_ipaddr(&remote_addr, &name_in->sin_addr); |
| 492 | remote_port = name_in->sin_port; |
| 493 | |
| 494 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d, addr=", s)); |
| 495 | ip_addr_debug_print(SOCKETS_DEBUG, &remote_addr); |
| 496 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", ntohs(remote_port))); |
| 497 | |
| 498 | err = netconn_connect(sock->conn, &remote_addr, ntohs(remote_port)); |
| 499 | } |
| 500 | |
| 501 | if (err != ERR_OK) { |
| 502 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) failed, err=%d\n", s, err)); |
| 503 | sock_set_errno(sock, err_to_errno(err)); |
| 504 | return -1; |
| 505 | } |
| 506 | |
| 507 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_connect(%d) succeeded\n", s)); |
| 508 | sock_set_errno(sock, 0); |
| 509 | return 0; |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * Set a socket into listen mode. |
| 514 | * The socket may not have been used for another connection previously. |
| 515 | * |
| 516 | * @param s the socket to set to listening mode |
| 517 | * @param backlog (ATTENTION: needs TCP_LISTEN_BACKLOG=1) |
| 518 | * @return 0 on success, non-zero on failure |
| 519 | */ |
| 520 | int |
| 521 | lwip_listen(int s, int backlog) |
| 522 | { |
| 523 | struct lwip_sock *sock; |
| 524 | err_t err; |
| 525 | |
| 526 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d, backlog=%d)\n", s, backlog)); |
| 527 | |
| 528 | sock = get_socket(s); |
| 529 | if (!sock) { |
| 530 | return -1; |
| 531 | } |
| 532 | |
| 533 | /* limit the "backlog" parameter to fit in an u8_t */ |
| 534 | backlog = LWIP_MIN(LWIP_MAX(backlog, 0), 0xff); |
| 535 | |
| 536 | err = netconn_listen_with_backlog(sock->conn, (u8_t)backlog); |
| 537 | |
| 538 | if (err != ERR_OK) { |
| 539 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_listen(%d) failed, err=%d\n", s, err)); |
| 540 | sock_set_errno(sock, err_to_errno(err)); |
| 541 | return -1; |
| 542 | } |
| 543 | |
| 544 | sock_set_errno(sock, 0); |
| 545 | return 0; |
| 546 | } |
| 547 | |
| 548 | int |
| 549 | lwip_recvfrom(int s, void *mem, size_t len, int flags, |
| 550 | struct sockaddr *from, socklen_t *fromlen) |
| 551 | { |
| 552 | struct lwip_sock *sock; |
| 553 | void *buf = NULL; |
| 554 | struct pbuf *p; |
| 555 | u16_t buflen, copylen; |
| 556 | int off = 0; |
| 557 | ip_addr_t *addr; |
| 558 | u16_t port; |
| 559 | u8_t done = 0; |
| 560 | err_t err; |
| 561 | |
| 562 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d, %p, %"SZT_F", 0x%x, ..)\n", s, mem, len, flags)); |
| 563 | sock = get_socket(s); |
| 564 | if (!sock) { |
| 565 | return -1; |
| 566 | } |
| 567 | |
| 568 | do { |
| 569 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: top while sock->lastdata=%p\n", sock->lastdata)); |
| 570 | /* Check if there is data left from the last recv operation. */ |
| 571 | if (sock->lastdata) { |
| 572 | buf = sock->lastdata; |
| 573 | } else { |
| 574 | /* If this is non-blocking call, then check first */ |
| 575 | if (((flags & MSG_DONTWAIT) || netconn_is_nonblocking(sock->conn)) && |
| 576 | (sock->rcvevent <= 0)) { |
| 577 | if (off > 0) { |
| 578 | /* update receive window */ |
| 579 | netconn_recved(sock->conn, (u32_t)off); |
| 580 | /* already received data, return that */ |
| 581 | sock_set_errno(sock, 0); |
| 582 | return off; |
| 583 | } |
| 584 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): returning EWOULDBLOCK\n", s)); |
| 585 | sock_set_errno(sock, EWOULDBLOCK); |
| 586 | return -1; |
| 587 | } |
| 588 | |
| 589 | /* No data was left from the previous operation, so we try to get |
| 590 | some from the network. */ |
| 591 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 592 | err = netconn_recv_tcp_pbuf(sock->conn, (struct pbuf **)&buf); |
| 593 | } else { |
| 594 | err = netconn_recv(sock->conn, (struct netbuf **)&buf); |
| 595 | } |
| 596 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: netconn_recv err=%d, netbuf=%p\n", |
| 597 | err, buf)); |
| 598 | |
| 599 | if (err != ERR_OK) { |
| 600 | if (off > 0) { |
| 601 | /* update receive window */ |
| 602 | netconn_recved(sock->conn, (u32_t)off); |
| 603 | /* already received data, return that */ |
| 604 | sock_set_errno(sock, 0); |
| 605 | return off; |
| 606 | } |
| 607 | /* We should really do some error checking here. */ |
| 608 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL, error is \"%s\"!\n", |
| 609 | s, lwip_strerr(err))); |
| 610 | sock_set_errno(sock, err_to_errno(err)); |
| 611 | if (err == ERR_CLSD) { |
| 612 | return 0; |
| 613 | } else { |
| 614 | return -1; |
| 615 | } |
| 616 | } |
| 617 | LWIP_ASSERT("buf != NULL", buf != NULL); |
| 618 | sock->lastdata = buf; |
| 619 | } |
| 620 | |
| 621 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 622 | p = (struct pbuf *)buf; |
| 623 | } else { |
| 624 | p = ((struct netbuf *)buf)->p; |
| 625 | } |
| 626 | buflen = p->tot_len; |
| 627 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: buflen=%"U16_F" len=%"SZT_F" off=%d sock->lastoffset=%"U16_F"\n", |
| 628 | buflen, len, off, sock->lastoffset)); |
| 629 | |
| 630 | buflen -= sock->lastoffset; |
| 631 | |
| 632 | if (len > buflen) { |
| 633 | copylen = buflen; |
| 634 | } else { |
| 635 | copylen = (u16_t)len; |
| 636 | } |
| 637 | |
| 638 | /* copy the contents of the received buffer into |
| 639 | the supplied memory pointer mem */ |
| 640 | pbuf_copy_partial(p, (u8_t*)mem + off, copylen, sock->lastoffset); |
| 641 | |
| 642 | off += copylen; |
| 643 | |
| 644 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 645 | LWIP_ASSERT("invalid copylen, len would underflow", len >= copylen); |
| 646 | len -= copylen; |
| 647 | if ( (len <= 0) || |
| 648 | (p->flags & PBUF_FLAG_PUSH) || |
| 649 | (sock->rcvevent <= 0) || |
| 650 | ((flags & MSG_PEEK)!=0)) { |
| 651 | done = 1; |
| 652 | } |
| 653 | } else { |
| 654 | done = 1; |
| 655 | } |
| 656 | |
| 657 | /* Check to see from where the data was.*/ |
| 658 | if (done) { |
| 659 | ip_addr_t fromaddr; |
| 660 | if (from && fromlen) { |
| 661 | struct sockaddr_in sin; |
| 662 | |
| 663 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 664 | addr = &fromaddr; |
| 665 | netconn_getaddr(sock->conn, addr, &port, 0); |
| 666 | } else { |
| 667 | addr = netbuf_fromaddr((struct netbuf *)buf); |
| 668 | port = netbuf_fromport((struct netbuf *)buf); |
| 669 | } |
| 670 | |
| 671 | memset(&sin, 0, sizeof(sin)); |
| 672 | sin.sin_len = sizeof(sin); |
| 673 | sin.sin_family = AF_INET; |
| 674 | sin.sin_port = htons(port); |
| 675 | inet_addr_from_ipaddr(&sin.sin_addr, addr); |
| 676 | |
| 677 | if (*fromlen > sizeof(sin)) { |
| 678 | *fromlen = sizeof(sin); |
| 679 | } |
| 680 | |
| 681 | MEMCPY(from, &sin, *fromlen); |
| 682 | |
| 683 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s)); |
| 684 | ip_addr_debug_print(SOCKETS_DEBUG, addr); |
| 685 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F" len=%d\n", port, off)); |
| 686 | } else { |
| 687 | #if SOCKETS_DEBUG |
| 688 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 689 | addr = &fromaddr; |
| 690 | netconn_getaddr(sock->conn, addr, &port, 0); |
| 691 | } else { |
| 692 | addr = netbuf_fromaddr((struct netbuf *)buf); |
| 693 | port = netbuf_fromport((struct netbuf *)buf); |
| 694 | } |
| 695 | |
| 696 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): addr=", s)); |
| 697 | ip_addr_debug_print(SOCKETS_DEBUG, addr); |
| 698 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F" len=%d\n", port, off)); |
| 699 | #endif /* SOCKETS_DEBUG */ |
| 700 | } |
| 701 | } |
| 702 | |
| 703 | /* If we don't peek the incoming message... */ |
| 704 | if ((flags & MSG_PEEK) == 0) { |
| 705 | /* If this is a TCP socket, check if there is data left in the |
| 706 | buffer. If so, it should be saved in the sock structure for next |
| 707 | time around. */ |
| 708 | if ((netconn_type(sock->conn) == NETCONN_TCP) && (buflen - copylen > 0)) { |
| 709 | sock->lastdata = buf; |
| 710 | sock->lastoffset += copylen; |
| 711 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: lastdata now netbuf=%p\n", buf)); |
| 712 | } else { |
| 713 | sock->lastdata = NULL; |
| 714 | sock->lastoffset = 0; |
| 715 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom: deleting netbuf=%p\n", buf)); |
| 716 | if (netconn_type(sock->conn) == NETCONN_TCP) { |
| 717 | pbuf_free((struct pbuf *)buf); |
| 718 | } else { |
| 719 | netbuf_delete((struct netbuf *)buf); |
| 720 | } |
| 721 | } |
| 722 | } |
| 723 | } while (!done); |
| 724 | |
| 725 | if (off > 0) { |
| 726 | /* update receive window */ |
| 727 | netconn_recved(sock->conn, (u32_t)off); |
| 728 | } |
| 729 | sock_set_errno(sock, 0); |
| 730 | return off; |
| 731 | } |
| 732 | |
| 733 | int |
| 734 | lwip_read(int s, void *mem, size_t len) |
| 735 | { |
| 736 | return lwip_recvfrom(s, mem, len, 0, NULL, NULL); |
| 737 | } |
| 738 | |
| 739 | int |
| 740 | lwip_recv(int s, void *mem, size_t len, int flags) |
| 741 | { |
| 742 | return lwip_recvfrom(s, mem, len, flags, NULL, NULL); |
| 743 | } |
| 744 | |
| 745 | int |
| 746 | lwip_send(int s, const void *data, size_t size, int flags) |
| 747 | { |
| 748 | struct lwip_sock *sock; |
| 749 | err_t err; |
| 750 | u8_t write_flags; |
| 751 | |
| 752 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d, data=%p, size=%"SZT_F", flags=0x%x)\n", |
| 753 | s, data, size, flags)); |
| 754 | |
| 755 | sock = get_socket(s); |
| 756 | if (!sock) { |
| 757 | return -1; |
| 758 | } |
| 759 | |
| 760 | if (sock->conn->type != NETCONN_TCP) { |
| 761 | #if (LWIP_UDP || LWIP_RAW) |
| 762 | return lwip_sendto(s, data, size, flags, NULL, 0); |
| 763 | #else /* (LWIP_UDP || LWIP_RAW) */ |
| 764 | sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 765 | return -1; |
| 766 | #endif /* (LWIP_UDP || LWIP_RAW) */ |
| 767 | } |
| 768 | |
| 769 | if ((flags & MSG_DONTWAIT) || netconn_is_nonblocking(sock->conn)) { |
| 770 | if ((size > TCP_SND_BUF) || ((size / TCP_MSS) > TCP_SND_QUEUELEN)) { |
| 771 | /* too much data to ever send nonblocking! */ |
| 772 | sock_set_errno(sock, EMSGSIZE); |
| 773 | return -1; |
| 774 | } |
| 775 | } |
| 776 | |
| 777 | write_flags = NETCONN_COPY | |
| 778 | ((flags & MSG_MORE) ? NETCONN_MORE : 0) | |
| 779 | ((flags & MSG_DONTWAIT) ? NETCONN_DONTBLOCK : 0); |
| 780 | err = netconn_write(sock->conn, data, size, write_flags); |
| 781 | |
| 782 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_send(%d) err=%d size=%"SZT_F"\n", s, err, size)); |
| 783 | sock_set_errno(sock, err_to_errno(err)); |
| 784 | return (err == ERR_OK ? (int)size : -1); |
| 785 | } |
| 786 | |
| 787 | int |
| 788 | lwip_sendto(int s, const void *data, size_t size, int flags, |
| 789 | const struct sockaddr *to, socklen_t tolen) |
| 790 | { |
| 791 | struct lwip_sock *sock; |
| 792 | err_t err; |
| 793 | u16_t short_size; |
| 794 | const struct sockaddr_in *to_in; |
| 795 | u16_t remote_port; |
| 796 | #if !LWIP_TCPIP_CORE_LOCKING |
| 797 | struct netbuf buf; |
| 798 | #endif |
| 799 | |
| 800 | sock = get_socket(s); |
| 801 | if (!sock) { |
| 802 | return -1; |
| 803 | } |
| 804 | |
| 805 | if (sock->conn->type == NETCONN_TCP) { |
| 806 | #if LWIP_TCP |
| 807 | return lwip_send(s, data, size, flags); |
| 808 | #else /* LWIP_TCP */ |
| 809 | LWIP_UNUSED_ARG(flags); |
| 810 | sock_set_errno(sock, err_to_errno(ERR_ARG)); |
| 811 | return -1; |
| 812 | #endif /* LWIP_TCP */ |
| 813 | } |
| 814 | |
| 815 | /* @todo: split into multiple sendto's? */ |
| 816 | LWIP_ASSERT("lwip_sendto: size must fit in u16_t", size <= 0xffff); |
| 817 | short_size = (u16_t)size; |
| 818 | LWIP_ERROR("lwip_sendto: invalid address", (((to == NULL) && (tolen == 0)) || |
| 819 | ((tolen == sizeof(struct sockaddr_in)) && |
| 820 | ((to->sa_family) == AF_INET) && ((((mem_ptr_t)to) % 4) == 0))), |
| 821 | sock_set_errno(sock, err_to_errno(ERR_ARG)); return -1;); |
| 822 | to_in = (const struct sockaddr_in *)(void*)to; |
| 823 | |
| 824 | #if LWIP_TCPIP_CORE_LOCKING |
| 825 | /* Should only be consider like a sample or a simple way to experiment this option (no check of "to" field...) */ |
| 826 | { |
| 827 | struct pbuf* p; |
| 828 | ip_addr_t *remote_addr; |
| 829 | |
| 830 | #if LWIP_NETIF_TX_SINGLE_PBUF |
| 831 | p = pbuf_alloc(PBUF_TRANSPORT, short_size, PBUF_RAM); |
| 832 | if (p != NULL) { |
| 833 | #if LWIP_CHECKSUM_ON_COPY |
| 834 | u16_t chksum = 0; |
| 835 | if (sock->conn->type != NETCONN_RAW) { |
| 836 | chksum = LWIP_CHKSUM_COPY(p->payload, data, short_size); |
| 837 | } else |
| 838 | #endif /* LWIP_CHECKSUM_ON_COPY */ |
| 839 | MEMCPY(p->payload, data, size); |
| 840 | #else /* LWIP_NETIF_TX_SINGLE_PBUF */ |
| 841 | p = pbuf_alloc(PBUF_TRANSPORT, short_size, PBUF_REF); |
| 842 | if (p != NULL) { |
| 843 | p->payload = (void*)data; |
| 844 | #endif /* LWIP_NETIF_TX_SINGLE_PBUF */ |
| 845 | |
| 846 | if (to_in != NULL) { |
| 847 | inet_addr_to_ipaddr_p(remote_addr, &to_in->sin_addr); |
| 848 | remote_port = ntohs(to_in->sin_port); |
| 849 | } else { |
| 850 | remote_addr = &sock->conn->pcb.raw->remote_ip; |
| 851 | if (sock->conn->type == NETCONN_RAW) { |
| 852 | remote_port = 0; |
| 853 | } else { |
| 854 | remote_port = sock->conn->pcb.udp->remote_port; |
| 855 | } |
| 856 | } |
| 857 | |
| 858 | LOCK_TCPIP_CORE(); |
| 859 | if (sock->conn->type == NETCONN_RAW) { |
| 860 | err = sock->conn->last_err = raw_sendto(sock->conn->pcb.raw, p, remote_addr); |
| 861 | } else { |
| 862 | #if LWIP_UDP |
| 863 | #if LWIP_CHECKSUM_ON_COPY && LWIP_NETIF_TX_SINGLE_PBUF |
| 864 | err = sock->conn->last_err = udp_sendto_chksum(sock->conn->pcb.udp, p, |
| 865 | remote_addr, remote_port, 1, chksum); |
| 866 | #else /* LWIP_CHECKSUM_ON_COPY && LWIP_NETIF_TX_SINGLE_PBUF */ |
| 867 | err = sock->conn->last_err = udp_sendto(sock->conn->pcb.udp, p, |
| 868 | remote_addr, remote_port); |
| 869 | #endif /* LWIP_CHECKSUM_ON_COPY && LWIP_NETIF_TX_SINGLE_PBUF */ |
| 870 | #else /* LWIP_UDP */ |
| 871 | err = ERR_ARG; |
| 872 | #endif /* LWIP_UDP */ |
| 873 | } |
| 874 | UNLOCK_TCPIP_CORE(); |
| 875 | |
| 876 | pbuf_free(p); |
| 877 | } else { |
| 878 | err = ERR_MEM; |
| 879 | } |
| 880 | } |
| 881 | #else /* LWIP_TCPIP_CORE_LOCKING */ |
| 882 | /* initialize a buffer */ |
| 883 | buf.p = buf.ptr = NULL; |
| 884 | #if LWIP_CHECKSUM_ON_COPY |
| 885 | buf.flags = 0; |
| 886 | #endif /* LWIP_CHECKSUM_ON_COPY */ |
| 887 | if (to) { |
| 888 | inet_addr_to_ipaddr(&buf.addr, &to_in->sin_addr); |
| 889 | remote_port = ntohs(to_in->sin_port); |
| 890 | netbuf_fromport(&buf) = remote_port; |
| 891 | } else { |
| 892 | remote_port = 0; |
| 893 | ip_addr_set_any(&buf.addr); |
| 894 | netbuf_fromport(&buf) = 0; |
| 895 | } |
| 896 | |
| 897 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_sendto(%d, data=%p, short_size=%"U16_F", flags=0x%x to=", |
| 898 | s, data, short_size, flags)); |
| 899 | ip_addr_debug_print(SOCKETS_DEBUG, &buf.addr); |
| 900 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F"\n", remote_port)); |
| 901 | |
| 902 | /* make the buffer point to the data that should be sent */ |
| 903 | #if LWIP_NETIF_TX_SINGLE_PBUF |
| 904 | /* Allocate a new netbuf and copy the data into it. */ |
| 905 | if (netbuf_alloc(&buf, short_size) == NULL) { |
| 906 | err = ERR_MEM; |
| 907 | } else { |
| 908 | #if LWIP_CHECKSUM_ON_COPY |
| 909 | if (sock->conn->type != NETCONN_RAW) { |
| 910 | u16_t chksum = LWIP_CHKSUM_COPY(buf.p->payload, data, short_size); |
| 911 | netbuf_set_chksum(&buf, chksum); |
| 912 | err = ERR_OK; |
| 913 | } else |
| 914 | #endif /* LWIP_CHECKSUM_ON_COPY */ |
| 915 | { |
| 916 | err = netbuf_take(&buf, data, short_size); |
| 917 | } |
| 918 | } |
| 919 | #else /* LWIP_NETIF_TX_SINGLE_PBUF */ |
| 920 | err = netbuf_ref(&buf, data, short_size); |
| 921 | #endif /* LWIP_NETIF_TX_SINGLE_PBUF */ |
| 922 | if (err == ERR_OK) { |
| 923 | /* send the data */ |
| 924 | err = netconn_send(sock->conn, &buf); |
| 925 | } |
| 926 | |
| 927 | /* deallocated the buffer */ |
| 928 | netbuf_free(&buf); |
| 929 | #endif /* LWIP_TCPIP_CORE_LOCKING */ |
| 930 | sock_set_errno(sock, err_to_errno(err)); |
| 931 | return (err == ERR_OK ? short_size : -1); |
| 932 | } |
| 933 | |
| 934 | int |
| 935 | lwip_socket(int domain, int type, int protocol) |
| 936 | { |
| 937 | struct netconn *conn; |
| 938 | int i; |
| 939 | |
| 940 | LWIP_UNUSED_ARG(domain); |
| 941 | |
| 942 | /* create a netconn */ |
| 943 | switch (type) { |
| 944 | case SOCK_RAW: |
| 945 | conn = netconn_new_with_proto_and_callback(NETCONN_RAW, (u8_t)protocol, event_callback); |
| 946 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_RAW, %d) = ", |
| 947 | domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 948 | break; |
| 949 | case SOCK_DGRAM: |
| 950 | conn = netconn_new_with_callback( (protocol == IPPROTO_UDPLITE) ? |
| 951 | NETCONN_UDPLITE : NETCONN_UDP, event_callback); |
| 952 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_DGRAM, %d) = ", |
| 953 | domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 954 | break; |
| 955 | case SOCK_STREAM: |
| 956 | conn = netconn_new_with_callback(NETCONN_TCP, event_callback); |
| 957 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%s, SOCK_STREAM, %d) = ", |
| 958 | domain == PF_INET ? "PF_INET" : "UNKNOWN", protocol)); |
| 959 | if (conn != NULL) { |
| 960 | /* Prevent automatic window updates, we do this on our own! */ |
| 961 | netconn_set_noautorecved(conn, 1); |
| 962 | } |
| 963 | break; |
| 964 | default: |
| 965 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_socket(%d, %d/UNKNOWN, %d) = -1\n", |
| 966 | domain, type, protocol)); |
| 967 | set_errno(EINVAL); |
| 968 | return -1; |
| 969 | } |
| 970 | |
| 971 | if (!conn) { |
| 972 | LWIP_DEBUGF(SOCKETS_DEBUG, ("-1 / ENOBUFS (could not create netconn)\n")); |
| 973 | set_errno(ENOBUFS); |
| 974 | return -1; |
| 975 | } |
| 976 | |
| 977 | i = alloc_socket(conn, 0); |
| 978 | |
| 979 | if (i == -1) { |
| 980 | netconn_delete(conn); |
| 981 | set_errno(ENFILE); |
| 982 | return -1; |
| 983 | } |
| 984 | conn->socket = i; |
| 985 | LWIP_DEBUGF(SOCKETS_DEBUG, ("%d\n", i)); |
| 986 | set_errno(0); |
| 987 | return i; |
| 988 | } |
| 989 | |
| 990 | int |
| 991 | lwip_write(int s, const void *data, size_t size) |
| 992 | { |
| 993 | return lwip_send(s, data, size, 0); |
| 994 | } |
| 995 | |
| 996 | /** |
| 997 | * Go through the readset and writeset lists and see which socket of the sockets |
| 998 | * set in the sets has events. On return, readset, writeset and exceptset have |
| 999 | * the sockets enabled that had events. |
| 1000 | * |
| 1001 | * exceptset is not used for now!!! |
| 1002 | * |
| 1003 | * @param maxfdp1 the highest socket index in the sets |
| 1004 | * @param readset_in: set of sockets to check for read events |
| 1005 | * @param writeset_in: set of sockets to check for write events |
| 1006 | * @param exceptset_in: set of sockets to check for error events |
| 1007 | * @param readset_out: set of sockets that had read events |
| 1008 | * @param writeset_out: set of sockets that had write events |
| 1009 | * @param exceptset_out: set os sockets that had error events |
| 1010 | * @return number of sockets that had events (read/write/exception) (>= 0) |
| 1011 | */ |
| 1012 | static int |
| 1013 | lwip_selscan(int maxfdp1, fd_set *readset_in, fd_set *writeset_in, fd_set *exceptset_in, |
| 1014 | fd_set *readset_out, fd_set *writeset_out, fd_set *exceptset_out) |
| 1015 | { |
| 1016 | int i, nready = 0; |
| 1017 | fd_set lreadset, lwriteset, lexceptset; |
| 1018 | struct lwip_sock *sock; |
| 1019 | SYS_ARCH_DECL_PROTECT(lev); |
| 1020 | |
| 1021 | FD_ZERO(&lreadset); |
| 1022 | FD_ZERO(&lwriteset); |
| 1023 | FD_ZERO(&lexceptset); |
| 1024 | |
| 1025 | /* Go through each socket in each list to count number of sockets which |
| 1026 | currently match */ |
| 1027 | for(i = 0; i < maxfdp1; i++) { |
| 1028 | void* lastdata = NULL; |
| 1029 | s16_t rcvevent = 0; |
| 1030 | u16_t sendevent = 0; |
| 1031 | u16_t errevent = 0; |
| 1032 | /* First get the socket's status (protected)... */ |
| 1033 | SYS_ARCH_PROTECT(lev); |
| 1034 | sock = tryget_socket(i); |
| 1035 | if (sock != NULL) { |
| 1036 | lastdata = sock->lastdata; |
| 1037 | rcvevent = sock->rcvevent; |
| 1038 | sendevent = sock->sendevent; |
| 1039 | errevent = sock->errevent; |
| 1040 | } |
| 1041 | SYS_ARCH_UNPROTECT(lev); |
| 1042 | /* ... then examine it: */ |
| 1043 | /* See if netconn of this socket is ready for read */ |
| 1044 | if (readset_in && FD_ISSET(i, readset_in) && ((lastdata != NULL) || (rcvevent > 0))) { |
| 1045 | FD_SET(i, &lreadset); |
| 1046 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for reading\n", i)); |
| 1047 | nready++; |
| 1048 | } |
| 1049 | /* See if netconn of this socket is ready for write */ |
| 1050 | if (writeset_in && FD_ISSET(i, writeset_in) && (sendevent != 0)) { |
| 1051 | FD_SET(i, &lwriteset); |
| 1052 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for writing\n", i)); |
| 1053 | nready++; |
| 1054 | } |
| 1055 | /* See if netconn of this socket had an error */ |
| 1056 | if (exceptset_in && FD_ISSET(i, exceptset_in) && (errevent != 0)) { |
| 1057 | FD_SET(i, &lexceptset); |
| 1058 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_selscan: fd=%d ready for exception\n", i)); |
| 1059 | nready++; |
| 1060 | } |
| 1061 | } |
| 1062 | /* copy local sets to the ones provided as arguments */ |
| 1063 | *readset_out = lreadset; |
| 1064 | *writeset_out = lwriteset; |
| 1065 | *exceptset_out = lexceptset; |
| 1066 | |
| 1067 | LWIP_ASSERT("nready >= 0", nready >= 0); |
| 1068 | return nready; |
| 1069 | } |
| 1070 | |
| 1071 | /** |
| 1072 | * Processing exceptset is not yet implemented. |
| 1073 | */ |
| 1074 | int |
| 1075 | lwip_select(int maxfdp1, fd_set *readset, fd_set *writeset, fd_set *exceptset, |
| 1076 | struct timeval *timeout) |
| 1077 | { |
| 1078 | u32_t waitres = 0; |
| 1079 | int nready; |
| 1080 | fd_set lreadset, lwriteset, lexceptset; |
| 1081 | u32_t msectimeout; |
| 1082 | struct lwip_select_cb select_cb; |
| 1083 | err_t err; |
| 1084 | int i; |
| 1085 | SYS_ARCH_DECL_PROTECT(lev); |
| 1086 | |
| 1087 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select(%d, %p, %p, %p, tvsec=%"S32_F" tvusec=%"S32_F")\n", |
| 1088 | maxfdp1, (void *)readset, (void *) writeset, (void *) exceptset, |
| 1089 | timeout ? (s32_t)timeout->tv_sec : (s32_t)-1, |
| 1090 | timeout ? (s32_t)timeout->tv_usec : (s32_t)-1)); |
| 1091 | |
| 1092 | /* Go through each socket in each list to count number of sockets which |
| 1093 | currently match */ |
| 1094 | nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset); |
| 1095 | |
| 1096 | /* If we don't have any current events, then suspend if we are supposed to */ |
| 1097 | if (!nready) { |
| 1098 | if (timeout && timeout->tv_sec == 0 && timeout->tv_usec == 0) { |
| 1099 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: no timeout, returning 0\n")); |
| 1100 | /* This is OK as the local fdsets are empty and nready is zero, |
| 1101 | or we would have returned earlier. */ |
| 1102 | goto return_copy_fdsets; |
| 1103 | } |
| 1104 | |
| 1105 | /* None ready: add our semaphore to list: |
| 1106 | We don't actually need any dynamic memory. Our entry on the |
| 1107 | list is only valid while we are in this function, so it's ok |
| 1108 | to use local variables. */ |
| 1109 | |
| 1110 | select_cb.next = NULL; |
| 1111 | select_cb.prev = NULL; |
| 1112 | select_cb.readset = readset; |
| 1113 | select_cb.writeset = writeset; |
| 1114 | select_cb.exceptset = exceptset; |
| 1115 | select_cb.sem_signalled = 0; |
| 1116 | err = sys_sem_new(&select_cb.sem, 0); |
| 1117 | if (err != ERR_OK) { |
| 1118 | /* failed to create semaphore */ |
| 1119 | set_errno(ENOMEM); |
| 1120 | return -1; |
| 1121 | } |
| 1122 | |
| 1123 | /* Protect the select_cb_list */ |
| 1124 | SYS_ARCH_PROTECT(lev); |
| 1125 | |
| 1126 | /* Put this select_cb on top of list */ |
| 1127 | select_cb.next = select_cb_list; |
| 1128 | if (select_cb_list != NULL) { |
| 1129 | select_cb_list->prev = &select_cb; |
| 1130 | } |
| 1131 | select_cb_list = &select_cb; |
| 1132 | /* Increasing this counter tells even_callback that the list has changed. */ |
| 1133 | select_cb_ctr++; |
| 1134 | |
| 1135 | /* Now we can safely unprotect */ |
| 1136 | SYS_ARCH_UNPROTECT(lev); |
| 1137 | |
| 1138 | /* Increase select_waiting for each socket we are interested in */ |
| 1139 | for(i = 0; i < maxfdp1; i++) { |
| 1140 | if ((readset && FD_ISSET(i, readset)) || |
| 1141 | (writeset && FD_ISSET(i, writeset)) || |
| 1142 | (exceptset && FD_ISSET(i, exceptset))) { |
| 1143 | struct lwip_sock *sock = tryget_socket(i); |
| 1144 | LWIP_ASSERT("sock != NULL", sock != NULL); |
| 1145 | SYS_ARCH_PROTECT(lev); |
| 1146 | sock->select_waiting++; |
| 1147 | LWIP_ASSERT("sock->select_waiting > 0", sock->select_waiting > 0); |
| 1148 | SYS_ARCH_UNPROTECT(lev); |
| 1149 | } |
| 1150 | } |
| 1151 | |
| 1152 | /* Call lwip_selscan again: there could have been events between |
| 1153 | the last scan (whithout us on the list) and putting us on the list! */ |
| 1154 | nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset); |
| 1155 | if (!nready) { |
| 1156 | /* Still none ready, just wait to be woken */ |
| 1157 | if (timeout == 0) { |
| 1158 | /* Wait forever */ |
| 1159 | msectimeout = 0; |
| 1160 | } else { |
| 1161 | msectimeout = ((timeout->tv_sec * 1000) + ((timeout->tv_usec + 500)/1000)); |
| 1162 | if (msectimeout == 0) { |
| 1163 | /* Wait 1ms at least (0 means wait forever) */ |
| 1164 | msectimeout = 1; |
| 1165 | } |
| 1166 | } |
| 1167 | |
| 1168 | waitres = sys_arch_sem_wait(&select_cb.sem, msectimeout); |
| 1169 | } |
| 1170 | /* Increase select_waiting for each socket we are interested in */ |
| 1171 | for(i = 0; i < maxfdp1; i++) { |
| 1172 | if ((readset && FD_ISSET(i, readset)) || |
| 1173 | (writeset && FD_ISSET(i, writeset)) || |
| 1174 | (exceptset && FD_ISSET(i, exceptset))) { |
| 1175 | struct lwip_sock *sock = tryget_socket(i); |
| 1176 | LWIP_ASSERT("sock != NULL", sock != NULL); |
| 1177 | SYS_ARCH_PROTECT(lev); |
| 1178 | sock->select_waiting--; |
| 1179 | LWIP_ASSERT("sock->select_waiting >= 0", sock->select_waiting >= 0); |
| 1180 | SYS_ARCH_UNPROTECT(lev); |
| 1181 | } |
| 1182 | } |
| 1183 | /* Take us off the list */ |
| 1184 | SYS_ARCH_PROTECT(lev); |
| 1185 | if (select_cb.next != NULL) { |
| 1186 | select_cb.next->prev = select_cb.prev; |
| 1187 | } |
| 1188 | if (select_cb_list == &select_cb) { |
| 1189 | LWIP_ASSERT("select_cb.prev == NULL", select_cb.prev == NULL); |
| 1190 | select_cb_list = select_cb.next; |
| 1191 | } else { |
| 1192 | LWIP_ASSERT("select_cb.prev != NULL", select_cb.prev != NULL); |
| 1193 | select_cb.prev->next = select_cb.next; |
| 1194 | } |
| 1195 | /* Increasing this counter tells even_callback that the list has changed. */ |
| 1196 | select_cb_ctr++; |
| 1197 | SYS_ARCH_UNPROTECT(lev); |
| 1198 | |
| 1199 | sys_sem_free(&select_cb.sem); |
| 1200 | if (waitres == SYS_ARCH_TIMEOUT) { |
| 1201 | /* Timeout */ |
| 1202 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: timeout expired\n")); |
| 1203 | /* This is OK as the local fdsets are empty and nready is zero, |
| 1204 | or we would have returned earlier. */ |
| 1205 | goto return_copy_fdsets; |
| 1206 | } |
| 1207 | |
| 1208 | /* See what's set */ |
| 1209 | nready = lwip_selscan(maxfdp1, readset, writeset, exceptset, &lreadset, &lwriteset, &lexceptset); |
| 1210 | } |
| 1211 | |
| 1212 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_select: nready=%d\n", nready)); |
| 1213 | return_copy_fdsets: |
| 1214 | set_errno(0); |
| 1215 | if (readset) { |
| 1216 | *readset = lreadset; |
| 1217 | } |
| 1218 | if (writeset) { |
| 1219 | *writeset = lwriteset; |
| 1220 | } |
| 1221 | if (exceptset) { |
| 1222 | *exceptset = lexceptset; |
| 1223 | } |
| 1224 | |
| 1225 | |
| 1226 | return nready; |
| 1227 | } |
| 1228 | |
| 1229 | /** |
| 1230 | * Callback registered in the netconn layer for each socket-netconn. |
| 1231 | * Processes recvevent (data available) and wakes up tasks waiting for select. |
| 1232 | */ |
| 1233 | static void |
| 1234 | event_callback(struct netconn *conn, enum netconn_evt evt, u16_t len) |
| 1235 | { |
| 1236 | int s; |
| 1237 | struct lwip_sock *sock; |
| 1238 | struct lwip_select_cb *scb; |
| 1239 | int last_select_cb_ctr; |
| 1240 | SYS_ARCH_DECL_PROTECT(lev); |
| 1241 | |
| 1242 | LWIP_UNUSED_ARG(len); |
| 1243 | |
| 1244 | /* Get socket */ |
| 1245 | if (conn) { |
| 1246 | s = conn->socket; |
| 1247 | if (s < 0) { |
| 1248 | /* Data comes in right away after an accept, even though |
| 1249 | * the server task might not have created a new socket yet. |
| 1250 | * Just count down (or up) if that's the case and we |
| 1251 | * will use the data later. Note that only receive events |
| 1252 | * can happen before the new socket is set up. */ |
| 1253 | SYS_ARCH_PROTECT(lev); |
| 1254 | if (conn->socket < 0) { |
| 1255 | if (evt == NETCONN_EVT_RCVPLUS) { |
| 1256 | conn->socket--; |
| 1257 | } |
| 1258 | SYS_ARCH_UNPROTECT(lev); |
| 1259 | return; |
| 1260 | } |
| 1261 | s = conn->socket; |
| 1262 | SYS_ARCH_UNPROTECT(lev); |
| 1263 | } |
| 1264 | |
| 1265 | sock = get_socket(s); |
| 1266 | if (!sock) { |
| 1267 | return; |
| 1268 | } |
| 1269 | } else { |
| 1270 | return; |
| 1271 | } |
| 1272 | |
| 1273 | SYS_ARCH_PROTECT(lev); |
| 1274 | /* Set event as required */ |
| 1275 | switch (evt) { |
| 1276 | case NETCONN_EVT_RCVPLUS: |
| 1277 | sock->rcvevent++; |
| 1278 | break; |
| 1279 | case NETCONN_EVT_RCVMINUS: |
| 1280 | sock->rcvevent--; |
| 1281 | break; |
| 1282 | case NETCONN_EVT_SENDPLUS: |
| 1283 | sock->sendevent = 1; |
| 1284 | break; |
| 1285 | case NETCONN_EVT_SENDMINUS: |
| 1286 | sock->sendevent = 0; |
| 1287 | break; |
| 1288 | case NETCONN_EVT_ERROR: |
| 1289 | sock->errevent = 1; |
| 1290 | break; |
| 1291 | default: |
| 1292 | LWIP_ASSERT("unknown event", 0); |
| 1293 | break; |
| 1294 | } |
| 1295 | |
| 1296 | if (sock->select_waiting == 0) { |
| 1297 | /* noone is waiting for this socket, no need to check select_cb_list */ |
| 1298 | SYS_ARCH_UNPROTECT(lev); |
| 1299 | return; |
| 1300 | } |
| 1301 | |
| 1302 | /* Now decide if anyone is waiting for this socket */ |
| 1303 | /* NOTE: This code goes through the select_cb_list list multiple times |
| 1304 | ONLY IF a select was actually waiting. We go through the list the number |
| 1305 | of waiting select calls + 1. This list is expected to be small. */ |
| 1306 | |
| 1307 | /* At this point, SYS_ARCH is still protected! */ |
| 1308 | again: |
| 1309 | for (scb = select_cb_list; scb != NULL; scb = scb->next) { |
| 1310 | if (scb->sem_signalled == 0) { |
| 1311 | /* semaphore not signalled yet */ |
| 1312 | int do_signal = 0; |
| 1313 | /* Test this select call for our socket */ |
| 1314 | if (sock->rcvevent > 0) { |
| 1315 | if (scb->readset && FD_ISSET(s, scb->readset)) { |
| 1316 | do_signal = 1; |
| 1317 | } |
| 1318 | } |
| 1319 | if (sock->sendevent != 0) { |
| 1320 | if (!do_signal && scb->writeset && FD_ISSET(s, scb->writeset)) { |
| 1321 | do_signal = 1; |
| 1322 | } |
| 1323 | } |
| 1324 | if (sock->errevent != 0) { |
| 1325 | if (!do_signal && scb->exceptset && FD_ISSET(s, scb->exceptset)) { |
| 1326 | do_signal = 1; |
| 1327 | } |
| 1328 | } |
| 1329 | if (do_signal) { |
| 1330 | scb->sem_signalled = 1; |
| 1331 | /* Don't call SYS_ARCH_UNPROTECT() before signaling the semaphore, as this might |
| 1332 | lead to the select thread taking itself off the list, invalidagin the semaphore. */ |
| 1333 | sys_sem_signal(&scb->sem); |
| 1334 | } |
| 1335 | } |
| 1336 | /* unlock interrupts with each step */ |
| 1337 | last_select_cb_ctr = select_cb_ctr; |
| 1338 | SYS_ARCH_UNPROTECT(lev); |
| 1339 | /* this makes sure interrupt protection time is short */ |
| 1340 | SYS_ARCH_PROTECT(lev); |
| 1341 | if (last_select_cb_ctr != select_cb_ctr) { |
| 1342 | /* someone has changed select_cb_list, restart at the beginning */ |
| 1343 | goto again; |
| 1344 | } |
| 1345 | } |
| 1346 | SYS_ARCH_UNPROTECT(lev); |
| 1347 | } |
| 1348 | |
| 1349 | /** |
| 1350 | * Unimplemented: Close one end of a full-duplex connection. |
| 1351 | * Currently, the full connection is closed. |
| 1352 | */ |
| 1353 | int |
| 1354 | lwip_shutdown(int s, int how) |
| 1355 | { |
| 1356 | struct lwip_sock *sock; |
| 1357 | err_t err; |
| 1358 | u8_t shut_rx = 0, shut_tx = 0; |
| 1359 | |
| 1360 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_shutdown(%d, how=%d)\n", s, how)); |
| 1361 | |
| 1362 | sock = get_socket(s); |
| 1363 | if (!sock) { |
| 1364 | return -1; |
| 1365 | } |
| 1366 | |
| 1367 | if (sock->conn != NULL) { |
| 1368 | if (netconn_type(sock->conn) != NETCONN_TCP) { |
| 1369 | sock_set_errno(sock, EOPNOTSUPP); |
| 1370 | return EOPNOTSUPP; |
| 1371 | } |
| 1372 | } else { |
| 1373 | sock_set_errno(sock, ENOTCONN); |
| 1374 | return ENOTCONN; |
| 1375 | } |
| 1376 | |
| 1377 | if (how == SHUT_RD) { |
| 1378 | shut_rx = 1; |
| 1379 | } else if (how == SHUT_WR) { |
| 1380 | shut_tx = 1; |
| 1381 | } else if(how == SHUT_RDWR) { |
| 1382 | shut_rx = 1; |
| 1383 | shut_tx = 1; |
| 1384 | } else { |
| 1385 | sock_set_errno(sock, EINVAL); |
| 1386 | return EINVAL; |
| 1387 | } |
| 1388 | err = netconn_shutdown(sock->conn, shut_rx, shut_tx); |
| 1389 | |
| 1390 | sock_set_errno(sock, err_to_errno(err)); |
| 1391 | return (err == ERR_OK ? 0 : -1); |
| 1392 | } |
| 1393 | |
| 1394 | static int |
| 1395 | lwip_getaddrname(int s, struct sockaddr *name, socklen_t *namelen, u8_t local) |
| 1396 | { |
| 1397 | struct lwip_sock *sock; |
| 1398 | struct sockaddr_in sin; |
| 1399 | ip_addr_t naddr; |
| 1400 | |
| 1401 | sock = get_socket(s); |
| 1402 | if (!sock) { |
| 1403 | return -1; |
| 1404 | } |
| 1405 | |
| 1406 | memset(&sin, 0, sizeof(sin)); |
| 1407 | sin.sin_len = sizeof(sin); |
| 1408 | sin.sin_family = AF_INET; |
| 1409 | |
| 1410 | /* get the IP address and port */ |
| 1411 | netconn_getaddr(sock->conn, &naddr, &sin.sin_port, local); |
| 1412 | |
| 1413 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getaddrname(%d, addr=", s)); |
| 1414 | ip_addr_debug_print(SOCKETS_DEBUG, &naddr); |
| 1415 | LWIP_DEBUGF(SOCKETS_DEBUG, (" port=%"U16_F")\n", sin.sin_port)); |
| 1416 | |
| 1417 | sin.sin_port = htons(sin.sin_port); |
| 1418 | inet_addr_from_ipaddr(&sin.sin_addr, &naddr); |
| 1419 | |
| 1420 | if (*namelen > sizeof(sin)) { |
| 1421 | *namelen = sizeof(sin); |
| 1422 | } |
| 1423 | |
| 1424 | MEMCPY(name, &sin, *namelen); |
| 1425 | sock_set_errno(sock, 0); |
| 1426 | return 0; |
| 1427 | } |
| 1428 | |
| 1429 | int |
| 1430 | lwip_getpeername(int s, struct sockaddr *name, socklen_t *namelen) |
| 1431 | { |
| 1432 | return lwip_getaddrname(s, name, namelen, 0); |
| 1433 | } |
| 1434 | |
| 1435 | int |
| 1436 | lwip_getsockname(int s, struct sockaddr *name, socklen_t *namelen) |
| 1437 | { |
| 1438 | return lwip_getaddrname(s, name, namelen, 1); |
| 1439 | } |
| 1440 | |
| 1441 | int |
| 1442 | lwip_getsockopt(int s, int level, int optname, void *optval, socklen_t *optlen) |
| 1443 | { |
| 1444 | err_t err = ERR_OK; |
| 1445 | struct lwip_sock *sock = get_socket(s); |
| 1446 | struct lwip_setgetsockopt_data data; |
| 1447 | |
| 1448 | if (!sock) { |
| 1449 | return -1; |
| 1450 | } |
| 1451 | |
| 1452 | if ((NULL == optval) || (NULL == optlen)) { |
| 1453 | sock_set_errno(sock, EFAULT); |
| 1454 | return -1; |
| 1455 | } |
| 1456 | |
| 1457 | /* Do length and type checks for the various options first, to keep it readable. */ |
| 1458 | switch (level) { |
| 1459 | |
| 1460 | /* Level: SOL_SOCKET */ |
| 1461 | case SOL_SOCKET: |
| 1462 | switch (optname) { |
| 1463 | |
| 1464 | case SO_ACCEPTCONN: |
| 1465 | case SO_BROADCAST: |
| 1466 | /* UNIMPL case SO_DEBUG: */ |
| 1467 | /* UNIMPL case SO_DONTROUTE: */ |
| 1468 | case SO_ERROR: |
| 1469 | case SO_KEEPALIVE: |
| 1470 | /* UNIMPL case SO_CONTIMEO: */ |
| 1471 | /* UNIMPL case SO_SNDTIMEO: */ |
| 1472 | #if LWIP_SO_RCVTIMEO |
| 1473 | case SO_RCVTIMEO: |
| 1474 | #endif /* LWIP_SO_RCVTIMEO */ |
| 1475 | #if LWIP_SO_RCVBUF |
| 1476 | case SO_RCVBUF: |
| 1477 | #endif /* LWIP_SO_RCVBUF */ |
| 1478 | /* UNIMPL case SO_OOBINLINE: */ |
| 1479 | /* UNIMPL case SO_SNDBUF: */ |
| 1480 | /* UNIMPL case SO_RCVLOWAT: */ |
| 1481 | /* UNIMPL case SO_SNDLOWAT: */ |
| 1482 | #if SO_REUSE |
| 1483 | case SO_REUSEADDR: |
| 1484 | case SO_REUSEPORT: |
| 1485 | #endif /* SO_REUSE */ |
| 1486 | case SO_TYPE: |
| 1487 | /* UNIMPL case SO_USELOOPBACK: */ |
| 1488 | if (*optlen < sizeof(int)) { |
| 1489 | err = EINVAL; |
| 1490 | } |
| 1491 | break; |
| 1492 | |
| 1493 | case SO_NO_CHECK: |
| 1494 | if (*optlen < sizeof(int)) { |
| 1495 | err = EINVAL; |
| 1496 | } |
| 1497 | #if LWIP_UDP |
| 1498 | if ((sock->conn->type != NETCONN_UDP) || |
| 1499 | ((udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_UDPLITE) != 0)) { |
| 1500 | /* this flag is only available for UDP, not for UDP lite */ |
| 1501 | err = EAFNOSUPPORT; |
| 1502 | } |
| 1503 | #endif /* LWIP_UDP */ |
| 1504 | break; |
| 1505 | |
| 1506 | default: |
| 1507 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", |
| 1508 | s, optname)); |
| 1509 | err = ENOPROTOOPT; |
| 1510 | } /* switch (optname) */ |
| 1511 | break; |
| 1512 | |
| 1513 | /* Level: IPPROTO_IP */ |
| 1514 | case IPPROTO_IP: |
| 1515 | switch (optname) { |
| 1516 | /* UNIMPL case IP_HDRINCL: */ |
| 1517 | /* UNIMPL case IP_RCVDSTADDR: */ |
| 1518 | /* UNIMPL case IP_RCVIF: */ |
| 1519 | case IP_TTL: |
| 1520 | case IP_TOS: |
| 1521 | if (*optlen < sizeof(int)) { |
| 1522 | err = EINVAL; |
| 1523 | } |
| 1524 | break; |
| 1525 | #if LWIP_IGMP |
| 1526 | case IP_MULTICAST_TTL: |
| 1527 | if (*optlen < sizeof(u8_t)) { |
| 1528 | err = EINVAL; |
| 1529 | } |
| 1530 | break; |
| 1531 | case IP_MULTICAST_IF: |
| 1532 | if (*optlen < sizeof(struct in_addr)) { |
| 1533 | err = EINVAL; |
| 1534 | } |
| 1535 | break; |
| 1536 | case IP_MULTICAST_LOOP: |
| 1537 | if (*optlen < sizeof(u8_t)) { |
| 1538 | err = EINVAL; |
| 1539 | } |
| 1540 | if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_UDP) { |
| 1541 | err = EAFNOSUPPORT; |
| 1542 | } |
| 1543 | break; |
| 1544 | #endif /* LWIP_IGMP */ |
| 1545 | |
| 1546 | default: |
| 1547 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", |
| 1548 | s, optname)); |
| 1549 | err = ENOPROTOOPT; |
| 1550 | } /* switch (optname) */ |
| 1551 | break; |
| 1552 | |
| 1553 | #if LWIP_TCP |
| 1554 | /* Level: IPPROTO_TCP */ |
| 1555 | case IPPROTO_TCP: |
| 1556 | if (*optlen < sizeof(int)) { |
| 1557 | err = EINVAL; |
| 1558 | break; |
| 1559 | } |
| 1560 | |
| 1561 | /* If this is no TCP socket, ignore any options. */ |
| 1562 | if (sock->conn->type != NETCONN_TCP) |
| 1563 | return 0; |
| 1564 | |
| 1565 | switch (optname) { |
| 1566 | case TCP_NODELAY: |
| 1567 | case TCP_KEEPALIVE: |
| 1568 | #if LWIP_TCP_KEEPALIVE |
| 1569 | case TCP_KEEPIDLE: |
| 1570 | case TCP_KEEPINTVL: |
| 1571 | case TCP_KEEPCNT: |
| 1572 | #endif /* LWIP_TCP_KEEPALIVE */ |
| 1573 | break; |
| 1574 | |
| 1575 | default: |
| 1576 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", |
| 1577 | s, optname)); |
| 1578 | err = ENOPROTOOPT; |
| 1579 | } /* switch (optname) */ |
| 1580 | break; |
| 1581 | #endif /* LWIP_TCP */ |
| 1582 | #if LWIP_UDP && LWIP_UDPLITE |
| 1583 | /* Level: IPPROTO_UDPLITE */ |
| 1584 | case IPPROTO_UDPLITE: |
| 1585 | if (*optlen < sizeof(int)) { |
| 1586 | err = EINVAL; |
| 1587 | break; |
| 1588 | } |
| 1589 | |
| 1590 | /* If this is no UDP lite socket, ignore any options. */ |
| 1591 | if (sock->conn->type != NETCONN_UDPLITE) { |
| 1592 | return 0; |
| 1593 | } |
| 1594 | |
| 1595 | switch (optname) { |
| 1596 | case UDPLITE_SEND_CSCOV: |
| 1597 | case UDPLITE_RECV_CSCOV: |
| 1598 | break; |
| 1599 | |
| 1600 | default: |
| 1601 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UNIMPL: optname=0x%x, ..)\n", |
| 1602 | s, optname)); |
| 1603 | err = ENOPROTOOPT; |
| 1604 | } /* switch (optname) */ |
| 1605 | break; |
| 1606 | #endif /* LWIP_UDP && LWIP_UDPLITE*/ |
| 1607 | /* UNDEFINED LEVEL */ |
| 1608 | default: |
| 1609 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", |
| 1610 | s, level, optname)); |
| 1611 | err = ENOPROTOOPT; |
| 1612 | } /* switch */ |
| 1613 | |
| 1614 | |
| 1615 | if (err != ERR_OK) { |
| 1616 | sock_set_errno(sock, err); |
| 1617 | return -1; |
| 1618 | } |
| 1619 | |
| 1620 | /* Now do the actual option processing */ |
| 1621 | data.sock = sock; |
| 1622 | #ifdef LWIP_DEBUG |
| 1623 | data.s = s; |
| 1624 | #endif /* LWIP_DEBUG */ |
| 1625 | data.level = level; |
| 1626 | data.optname = optname; |
| 1627 | data.optval = optval; |
| 1628 | data.optlen = optlen; |
| 1629 | data.err = err; |
| 1630 | tcpip_callback(lwip_getsockopt_internal, &data); |
| 1631 | sys_arch_sem_wait(&sock->conn->op_completed, 0); |
| 1632 | /* maybe lwip_getsockopt_internal has changed err */ |
| 1633 | err = data.err; |
| 1634 | |
| 1635 | sock_set_errno(sock, err); |
| 1636 | return err ? -1 : 0; |
| 1637 | } |
| 1638 | |
| 1639 | static void |
| 1640 | lwip_getsockopt_internal(void *arg) |
| 1641 | { |
| 1642 | struct lwip_sock *sock; |
| 1643 | #ifdef LWIP_DEBUG |
| 1644 | int s; |
| 1645 | #endif /* LWIP_DEBUG */ |
| 1646 | int level, optname; |
| 1647 | void *optval; |
| 1648 | struct lwip_setgetsockopt_data *data; |
| 1649 | |
| 1650 | LWIP_ASSERT("arg != NULL", arg != NULL); |
| 1651 | |
| 1652 | data = (struct lwip_setgetsockopt_data*)arg; |
| 1653 | sock = data->sock; |
| 1654 | #ifdef LWIP_DEBUG |
| 1655 | s = data->s; |
| 1656 | #endif /* LWIP_DEBUG */ |
| 1657 | level = data->level; |
| 1658 | optname = data->optname; |
| 1659 | optval = data->optval; |
| 1660 | |
| 1661 | switch (level) { |
| 1662 | |
| 1663 | /* Level: SOL_SOCKET */ |
| 1664 | case SOL_SOCKET: |
| 1665 | switch (optname) { |
| 1666 | |
| 1667 | /* The option flags */ |
| 1668 | case SO_ACCEPTCONN: |
| 1669 | case SO_BROADCAST: |
| 1670 | /* UNIMPL case SO_DEBUG: */ |
| 1671 | /* UNIMPL case SO_DONTROUTE: */ |
| 1672 | case SO_KEEPALIVE: |
| 1673 | /* UNIMPL case SO_OOBINCLUDE: */ |
| 1674 | #if SO_REUSE |
| 1675 | case SO_REUSEADDR: |
| 1676 | case SO_REUSEPORT: |
| 1677 | #endif /* SO_REUSE */ |
| 1678 | /*case SO_USELOOPBACK: UNIMPL */ |
| 1679 | *(int*)optval = sock->conn->pcb.ip->so_options & optname; |
| 1680 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, optname=0x%x, ..) = %s\n", |
| 1681 | s, optname, (*(int*)optval?"on":"off"))); |
| 1682 | break; |
| 1683 | |
| 1684 | case SO_TYPE: |
| 1685 | switch (NETCONNTYPE_GROUP(sock->conn->type)) { |
| 1686 | case NETCONN_RAW: |
| 1687 | *(int*)optval = SOCK_RAW; |
| 1688 | break; |
| 1689 | case NETCONN_TCP: |
| 1690 | *(int*)optval = SOCK_STREAM; |
| 1691 | break; |
| 1692 | case NETCONN_UDP: |
| 1693 | *(int*)optval = SOCK_DGRAM; |
| 1694 | break; |
| 1695 | default: /* unrecognized socket type */ |
| 1696 | *(int*)optval = sock->conn->type; |
| 1697 | LWIP_DEBUGF(SOCKETS_DEBUG, |
| 1698 | ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE): unrecognized socket type %d\n", |
| 1699 | s, *(int *)optval)); |
| 1700 | } /* switch (sock->conn->type) */ |
| 1701 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_TYPE) = %d\n", |
| 1702 | s, *(int *)optval)); |
| 1703 | break; |
| 1704 | |
| 1705 | case SO_ERROR: |
| 1706 | /* only overwrite ERR_OK or tempoary errors */ |
| 1707 | if ((sock->err == 0) || (sock->err == EINPROGRESS)) { |
| 1708 | sock_set_errno(sock, err_to_errno(sock->conn->last_err)); |
| 1709 | } |
| 1710 | *(int *)optval = sock->err; |
| 1711 | sock->err = 0; |
| 1712 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, SOL_SOCKET, SO_ERROR) = %d\n", |
| 1713 | s, *(int *)optval)); |
| 1714 | break; |
| 1715 | |
| 1716 | #if LWIP_SO_RCVTIMEO |
| 1717 | case SO_RCVTIMEO: |
| 1718 | *(int *)optval = netconn_get_recvtimeout(sock->conn); |
| 1719 | break; |
| 1720 | #endif /* LWIP_SO_RCVTIMEO */ |
| 1721 | #if LWIP_SO_RCVBUF |
| 1722 | case SO_RCVBUF: |
| 1723 | *(int *)optval = netconn_get_recvbufsize(sock->conn); |
| 1724 | break; |
| 1725 | #endif /* LWIP_SO_RCVBUF */ |
| 1726 | #if LWIP_UDP |
| 1727 | case SO_NO_CHECK: |
| 1728 | *(int*)optval = (udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_NOCHKSUM) ? 1 : 0; |
| 1729 | break; |
| 1730 | #endif /* LWIP_UDP*/ |
| 1731 | default: |
| 1732 | LWIP_ASSERT("unhandled optname", 0); |
| 1733 | break; |
| 1734 | } /* switch (optname) */ |
| 1735 | break; |
| 1736 | |
| 1737 | /* Level: IPPROTO_IP */ |
| 1738 | case IPPROTO_IP: |
| 1739 | switch (optname) { |
| 1740 | case IP_TTL: |
| 1741 | *(int*)optval = sock->conn->pcb.ip->ttl; |
| 1742 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TTL) = %d\n", |
| 1743 | s, *(int *)optval)); |
| 1744 | break; |
| 1745 | case IP_TOS: |
| 1746 | *(int*)optval = sock->conn->pcb.ip->tos; |
| 1747 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_TOS) = %d\n", |
| 1748 | s, *(int *)optval)); |
| 1749 | break; |
| 1750 | #if LWIP_IGMP |
| 1751 | case IP_MULTICAST_TTL: |
| 1752 | *(u8_t*)optval = sock->conn->pcb.ip->ttl; |
| 1753 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_TTL) = %d\n", |
| 1754 | s, *(int *)optval)); |
| 1755 | break; |
| 1756 | case IP_MULTICAST_IF: |
| 1757 | inet_addr_from_ipaddr((struct in_addr*)optval, &sock->conn->pcb.udp->multicast_ip); |
| 1758 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_IF) = 0x%"X32_F"\n", |
| 1759 | s, *(u32_t *)optval)); |
| 1760 | break; |
| 1761 | case IP_MULTICAST_LOOP: |
| 1762 | if ((sock->conn->pcb.udp->flags & UDP_FLAGS_MULTICAST_LOOP) != 0) { |
| 1763 | *(u8_t*)optval = 1; |
| 1764 | } else { |
| 1765 | *(u8_t*)optval = 0; |
| 1766 | } |
| 1767 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, IP_MULTICAST_LOOP) = %d\n", |
| 1768 | s, *(int *)optval)); |
| 1769 | break; |
| 1770 | #endif /* LWIP_IGMP */ |
| 1771 | default: |
| 1772 | LWIP_ASSERT("unhandled optname", 0); |
| 1773 | break; |
| 1774 | } /* switch (optname) */ |
| 1775 | break; |
| 1776 | |
| 1777 | #if LWIP_TCP |
| 1778 | /* Level: IPPROTO_TCP */ |
| 1779 | case IPPROTO_TCP: |
| 1780 | switch (optname) { |
| 1781 | case TCP_NODELAY: |
| 1782 | *(int*)optval = tcp_nagle_disabled(sock->conn->pcb.tcp); |
| 1783 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_TCP, TCP_NODELAY) = %s\n", |
| 1784 | s, (*(int*)optval)?"on":"off") ); |
| 1785 | break; |
| 1786 | case TCP_KEEPALIVE: |
| 1787 | *(int*)optval = (int)sock->conn->pcb.tcp->keep_idle; |
| 1788 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPALIVE) = %d\n", |
| 1789 | s, *(int *)optval)); |
| 1790 | break; |
| 1791 | |
| 1792 | #if LWIP_TCP_KEEPALIVE |
| 1793 | case TCP_KEEPIDLE: |
| 1794 | *(int*)optval = (int)(sock->conn->pcb.tcp->keep_idle/1000); |
| 1795 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPIDLE) = %d\n", |
| 1796 | s, *(int *)optval)); |
| 1797 | break; |
| 1798 | case TCP_KEEPINTVL: |
| 1799 | *(int*)optval = (int)(sock->conn->pcb.tcp->keep_intvl/1000); |
| 1800 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPINTVL) = %d\n", |
| 1801 | s, *(int *)optval)); |
| 1802 | break; |
| 1803 | case TCP_KEEPCNT: |
| 1804 | *(int*)optval = (int)sock->conn->pcb.tcp->keep_cnt; |
| 1805 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_IP, TCP_KEEPCNT) = %d\n", |
| 1806 | s, *(int *)optval)); |
| 1807 | break; |
| 1808 | #endif /* LWIP_TCP_KEEPALIVE */ |
| 1809 | default: |
| 1810 | LWIP_ASSERT("unhandled optname", 0); |
| 1811 | break; |
| 1812 | } /* switch (optname) */ |
| 1813 | break; |
| 1814 | #endif /* LWIP_TCP */ |
| 1815 | #if LWIP_UDP && LWIP_UDPLITE |
| 1816 | /* Level: IPPROTO_UDPLITE */ |
| 1817 | case IPPROTO_UDPLITE: |
| 1818 | switch (optname) { |
| 1819 | case UDPLITE_SEND_CSCOV: |
| 1820 | *(int*)optval = sock->conn->pcb.udp->chksum_len_tx; |
| 1821 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV) = %d\n", |
| 1822 | s, (*(int*)optval)) ); |
| 1823 | break; |
| 1824 | case UDPLITE_RECV_CSCOV: |
| 1825 | *(int*)optval = sock->conn->pcb.udp->chksum_len_rx; |
| 1826 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_getsockopt(%d, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV) = %d\n", |
| 1827 | s, (*(int*)optval)) ); |
| 1828 | break; |
| 1829 | default: |
| 1830 | LWIP_ASSERT("unhandled optname", 0); |
| 1831 | break; |
| 1832 | } /* switch (optname) */ |
| 1833 | break; |
| 1834 | #endif /* LWIP_UDP */ |
| 1835 | default: |
| 1836 | LWIP_ASSERT("unhandled level", 0); |
| 1837 | break; |
| 1838 | } /* switch (level) */ |
| 1839 | sys_sem_signal(&sock->conn->op_completed); |
| 1840 | } |
| 1841 | |
| 1842 | int |
| 1843 | lwip_setsockopt(int s, int level, int optname, const void *optval, socklen_t optlen) |
| 1844 | { |
| 1845 | struct lwip_sock *sock = get_socket(s); |
| 1846 | err_t err = ERR_OK; |
| 1847 | struct lwip_setgetsockopt_data data; |
| 1848 | |
| 1849 | if (!sock) { |
| 1850 | return -1; |
| 1851 | } |
| 1852 | |
| 1853 | if (NULL == optval) { |
| 1854 | sock_set_errno(sock, EFAULT); |
| 1855 | return -1; |
| 1856 | } |
| 1857 | |
| 1858 | /* Do length and type checks for the various options first, to keep it readable. */ |
| 1859 | switch (level) { |
| 1860 | |
| 1861 | /* Level: SOL_SOCKET */ |
| 1862 | case SOL_SOCKET: |
| 1863 | switch (optname) { |
| 1864 | |
| 1865 | case SO_BROADCAST: |
| 1866 | /* UNIMPL case SO_DEBUG: */ |
| 1867 | /* UNIMPL case SO_DONTROUTE: */ |
| 1868 | case SO_KEEPALIVE: |
| 1869 | /* UNIMPL case case SO_CONTIMEO: */ |
| 1870 | /* UNIMPL case case SO_SNDTIMEO: */ |
| 1871 | #if LWIP_SO_RCVTIMEO |
| 1872 | case SO_RCVTIMEO: |
| 1873 | #endif /* LWIP_SO_RCVTIMEO */ |
| 1874 | #if LWIP_SO_RCVBUF |
| 1875 | case SO_RCVBUF: |
| 1876 | #endif /* LWIP_SO_RCVBUF */ |
| 1877 | /* UNIMPL case SO_OOBINLINE: */ |
| 1878 | /* UNIMPL case SO_SNDBUF: */ |
| 1879 | /* UNIMPL case SO_RCVLOWAT: */ |
| 1880 | /* UNIMPL case SO_SNDLOWAT: */ |
| 1881 | #if SO_REUSE |
| 1882 | case SO_REUSEADDR: |
| 1883 | case SO_REUSEPORT: |
| 1884 | #endif /* SO_REUSE */ |
| 1885 | /* UNIMPL case SO_USELOOPBACK: */ |
| 1886 | if (optlen < sizeof(int)) { |
| 1887 | err = EINVAL; |
| 1888 | } |
| 1889 | break; |
| 1890 | case SO_NO_CHECK: |
| 1891 | if (optlen < sizeof(int)) { |
| 1892 | err = EINVAL; |
| 1893 | } |
| 1894 | #if LWIP_UDP |
| 1895 | if ((sock->conn->type != NETCONN_UDP) || |
| 1896 | ((udp_flags(sock->conn->pcb.udp) & UDP_FLAGS_UDPLITE) != 0)) { |
| 1897 | /* this flag is only available for UDP, not for UDP lite */ |
| 1898 | err = EAFNOSUPPORT; |
| 1899 | } |
| 1900 | #endif /* LWIP_UDP */ |
| 1901 | break; |
| 1902 | default: |
| 1903 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, UNIMPL: optname=0x%x, ..)\n", |
| 1904 | s, optname)); |
| 1905 | err = ENOPROTOOPT; |
| 1906 | } /* switch (optname) */ |
| 1907 | break; |
| 1908 | |
| 1909 | /* Level: IPPROTO_IP */ |
| 1910 | case IPPROTO_IP: |
| 1911 | switch (optname) { |
| 1912 | /* UNIMPL case IP_HDRINCL: */ |
| 1913 | /* UNIMPL case IP_RCVDSTADDR: */ |
| 1914 | /* UNIMPL case IP_RCVIF: */ |
| 1915 | case IP_TTL: |
| 1916 | case IP_TOS: |
| 1917 | if (optlen < sizeof(int)) { |
| 1918 | err = EINVAL; |
| 1919 | } |
| 1920 | break; |
| 1921 | #if LWIP_IGMP |
| 1922 | case IP_MULTICAST_TTL: |
| 1923 | if (optlen < sizeof(u8_t)) { |
| 1924 | err = EINVAL; |
| 1925 | } |
| 1926 | if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_UDP) { |
| 1927 | err = EAFNOSUPPORT; |
| 1928 | } |
| 1929 | break; |
| 1930 | case IP_MULTICAST_IF: |
| 1931 | if (optlen < sizeof(struct in_addr)) { |
| 1932 | err = EINVAL; |
| 1933 | } |
| 1934 | if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_UDP) { |
| 1935 | err = EAFNOSUPPORT; |
| 1936 | } |
| 1937 | break; |
| 1938 | case IP_MULTICAST_LOOP: |
| 1939 | if (optlen < sizeof(u8_t)) { |
| 1940 | err = EINVAL; |
| 1941 | } |
| 1942 | if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_UDP) { |
| 1943 | err = EAFNOSUPPORT; |
| 1944 | } |
| 1945 | break; |
| 1946 | case IP_ADD_MEMBERSHIP: |
| 1947 | case IP_DROP_MEMBERSHIP: |
| 1948 | if (optlen < sizeof(struct ip_mreq)) { |
| 1949 | err = EINVAL; |
| 1950 | } |
| 1951 | if (NETCONNTYPE_GROUP(sock->conn->type) != NETCONN_UDP) { |
| 1952 | err = EAFNOSUPPORT; |
| 1953 | } |
| 1954 | break; |
| 1955 | #endif /* LWIP_IGMP */ |
| 1956 | default: |
| 1957 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, UNIMPL: optname=0x%x, ..)\n", |
| 1958 | s, optname)); |
| 1959 | err = ENOPROTOOPT; |
| 1960 | } /* switch (optname) */ |
| 1961 | break; |
| 1962 | |
| 1963 | #if LWIP_TCP |
| 1964 | /* Level: IPPROTO_TCP */ |
| 1965 | case IPPROTO_TCP: |
| 1966 | if (optlen < sizeof(int)) { |
| 1967 | err = EINVAL; |
| 1968 | break; |
| 1969 | } |
| 1970 | |
| 1971 | /* If this is no TCP socket, ignore any options. */ |
| 1972 | if (sock->conn->type != NETCONN_TCP) |
| 1973 | return 0; |
| 1974 | |
| 1975 | switch (optname) { |
| 1976 | case TCP_NODELAY: |
| 1977 | case TCP_KEEPALIVE: |
| 1978 | #if LWIP_TCP_KEEPALIVE |
| 1979 | case TCP_KEEPIDLE: |
| 1980 | case TCP_KEEPINTVL: |
| 1981 | case TCP_KEEPCNT: |
| 1982 | #endif /* LWIP_TCP_KEEPALIVE */ |
| 1983 | break; |
| 1984 | |
| 1985 | default: |
| 1986 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, UNIMPL: optname=0x%x, ..)\n", |
| 1987 | s, optname)); |
| 1988 | err = ENOPROTOOPT; |
| 1989 | } /* switch (optname) */ |
| 1990 | break; |
| 1991 | #endif /* LWIP_TCP */ |
| 1992 | #if LWIP_UDP && LWIP_UDPLITE |
| 1993 | /* Level: IPPROTO_UDPLITE */ |
| 1994 | case IPPROTO_UDPLITE: |
| 1995 | if (optlen < sizeof(int)) { |
| 1996 | err = EINVAL; |
| 1997 | break; |
| 1998 | } |
| 1999 | |
| 2000 | /* If this is no UDP lite socket, ignore any options. */ |
| 2001 | if (sock->conn->type != NETCONN_UDPLITE) |
| 2002 | return 0; |
| 2003 | |
| 2004 | switch (optname) { |
| 2005 | case UDPLITE_SEND_CSCOV: |
| 2006 | case UDPLITE_RECV_CSCOV: |
| 2007 | break; |
| 2008 | |
| 2009 | default: |
| 2010 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UNIMPL: optname=0x%x, ..)\n", |
| 2011 | s, optname)); |
| 2012 | err = ENOPROTOOPT; |
| 2013 | } /* switch (optname) */ |
| 2014 | break; |
| 2015 | #endif /* LWIP_UDP && LWIP_UDPLITE */ |
| 2016 | /* UNDEFINED LEVEL */ |
| 2017 | default: |
| 2018 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, level=0x%x, UNIMPL: optname=0x%x, ..)\n", |
| 2019 | s, level, optname)); |
| 2020 | err = ENOPROTOOPT; |
| 2021 | } /* switch (level) */ |
| 2022 | |
| 2023 | |
| 2024 | if (err != ERR_OK) { |
| 2025 | sock_set_errno(sock, err); |
| 2026 | return -1; |
| 2027 | } |
| 2028 | |
| 2029 | |
| 2030 | /* Now do the actual option processing */ |
| 2031 | data.sock = sock; |
| 2032 | #ifdef LWIP_DEBUG |
| 2033 | data.s = s; |
| 2034 | #endif /* LWIP_DEBUG */ |
| 2035 | data.level = level; |
| 2036 | data.optname = optname; |
| 2037 | data.optval = (void*)optval; |
| 2038 | data.optlen = &optlen; |
| 2039 | data.err = err; |
| 2040 | tcpip_callback(lwip_setsockopt_internal, &data); |
| 2041 | sys_arch_sem_wait(&sock->conn->op_completed, 0); |
| 2042 | /* maybe lwip_setsockopt_internal has changed err */ |
| 2043 | err = data.err; |
| 2044 | |
| 2045 | sock_set_errno(sock, err); |
| 2046 | return err ? -1 : 0; |
| 2047 | } |
| 2048 | |
| 2049 | static void |
| 2050 | lwip_setsockopt_internal(void *arg) |
| 2051 | { |
| 2052 | struct lwip_sock *sock; |
| 2053 | #ifdef LWIP_DEBUG |
| 2054 | int s; |
| 2055 | #endif /* LWIP_DEBUG */ |
| 2056 | int level, optname; |
| 2057 | const void *optval; |
| 2058 | struct lwip_setgetsockopt_data *data; |
| 2059 | |
| 2060 | LWIP_ASSERT("arg != NULL", arg != NULL); |
| 2061 | |
| 2062 | data = (struct lwip_setgetsockopt_data*)arg; |
| 2063 | sock = data->sock; |
| 2064 | #ifdef LWIP_DEBUG |
| 2065 | s = data->s; |
| 2066 | #endif /* LWIP_DEBUG */ |
| 2067 | level = data->level; |
| 2068 | optname = data->optname; |
| 2069 | optval = data->optval; |
| 2070 | |
| 2071 | switch (level) { |
| 2072 | |
| 2073 | /* Level: SOL_SOCKET */ |
| 2074 | case SOL_SOCKET: |
| 2075 | switch (optname) { |
| 2076 | |
| 2077 | /* The option flags */ |
| 2078 | case SO_BROADCAST: |
| 2079 | /* UNIMPL case SO_DEBUG: */ |
| 2080 | /* UNIMPL case SO_DONTROUTE: */ |
| 2081 | case SO_KEEPALIVE: |
| 2082 | /* UNIMPL case SO_OOBINCLUDE: */ |
| 2083 | #if SO_REUSE |
| 2084 | case SO_REUSEADDR: |
| 2085 | case SO_REUSEPORT: |
| 2086 | #endif /* SO_REUSE */ |
| 2087 | /* UNIMPL case SO_USELOOPBACK: */ |
| 2088 | if (*(int*)optval) { |
| 2089 | sock->conn->pcb.ip->so_options |= optname; |
| 2090 | } else { |
| 2091 | sock->conn->pcb.ip->so_options &= ~optname; |
| 2092 | } |
| 2093 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, SOL_SOCKET, optname=0x%x, ..) -> %s\n", |
| 2094 | s, optname, (*(int*)optval?"on":"off"))); |
| 2095 | break; |
| 2096 | #if LWIP_SO_RCVTIMEO |
| 2097 | case SO_RCVTIMEO: |
| 2098 | netconn_set_recvtimeout(sock->conn, *(int*)optval); |
| 2099 | break; |
| 2100 | #endif /* LWIP_SO_RCVTIMEO */ |
| 2101 | #if LWIP_SO_RCVBUF |
| 2102 | case SO_RCVBUF: |
| 2103 | netconn_set_recvbufsize(sock->conn, *(int*)optval); |
| 2104 | break; |
| 2105 | #endif /* LWIP_SO_RCVBUF */ |
| 2106 | #if LWIP_UDP |
| 2107 | case SO_NO_CHECK: |
| 2108 | if (*(int*)optval) { |
| 2109 | udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) | UDP_FLAGS_NOCHKSUM); |
| 2110 | } else { |
| 2111 | udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) & ~UDP_FLAGS_NOCHKSUM); |
| 2112 | } |
| 2113 | break; |
| 2114 | #endif /* LWIP_UDP */ |
| 2115 | default: |
| 2116 | LWIP_ASSERT("unhandled optname", 0); |
| 2117 | break; |
| 2118 | } /* switch (optname) */ |
| 2119 | break; |
| 2120 | |
| 2121 | /* Level: IPPROTO_IP */ |
| 2122 | case IPPROTO_IP: |
| 2123 | switch (optname) { |
| 2124 | case IP_TTL: |
| 2125 | sock->conn->pcb.ip->ttl = (u8_t)(*(int*)optval); |
| 2126 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TTL, ..) -> %d\n", |
| 2127 | s, sock->conn->pcb.ip->ttl)); |
| 2128 | break; |
| 2129 | case IP_TOS: |
| 2130 | sock->conn->pcb.ip->tos = (u8_t)(*(int*)optval); |
| 2131 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_IP, IP_TOS, ..)-> %d\n", |
| 2132 | s, sock->conn->pcb.ip->tos)); |
| 2133 | break; |
| 2134 | #if LWIP_IGMP |
| 2135 | case IP_MULTICAST_TTL: |
| 2136 | sock->conn->pcb.udp->ttl = (u8_t)(*(u8_t*)optval); |
| 2137 | break; |
| 2138 | case IP_MULTICAST_IF: |
| 2139 | inet_addr_to_ipaddr(&sock->conn->pcb.udp->multicast_ip, (struct in_addr*)optval); |
| 2140 | break; |
| 2141 | case IP_MULTICAST_LOOP: |
| 2142 | if (*(u8_t*)optval) { |
| 2143 | udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) | UDP_FLAGS_MULTICAST_LOOP); |
| 2144 | } else { |
| 2145 | udp_setflags(sock->conn->pcb.udp, udp_flags(sock->conn->pcb.udp) & ~UDP_FLAGS_MULTICAST_LOOP); |
| 2146 | } |
| 2147 | break; |
| 2148 | case IP_ADD_MEMBERSHIP: |
| 2149 | case IP_DROP_MEMBERSHIP: |
| 2150 | { |
| 2151 | /* If this is a TCP or a RAW socket, ignore these options. */ |
| 2152 | struct ip_mreq *imr = (struct ip_mreq *)optval; |
| 2153 | ip_addr_t if_addr; |
| 2154 | ip_addr_t multi_addr; |
| 2155 | inet_addr_to_ipaddr(&if_addr, &imr->imr_interface); |
| 2156 | inet_addr_to_ipaddr(&multi_addr, &imr->imr_multiaddr); |
| 2157 | if(optname == IP_ADD_MEMBERSHIP){ |
| 2158 | data->err = igmp_joingroup(&if_addr, &multi_addr); |
| 2159 | } else { |
| 2160 | data->err = igmp_leavegroup(&if_addr, &multi_addr); |
| 2161 | } |
| 2162 | if(data->err != ERR_OK) { |
| 2163 | data->err = EADDRNOTAVAIL; |
| 2164 | } |
| 2165 | } |
| 2166 | break; |
| 2167 | #endif /* LWIP_IGMP */ |
| 2168 | default: |
| 2169 | LWIP_ASSERT("unhandled optname", 0); |
| 2170 | break; |
| 2171 | } /* switch (optname) */ |
| 2172 | break; |
| 2173 | |
| 2174 | #if LWIP_TCP |
| 2175 | /* Level: IPPROTO_TCP */ |
| 2176 | case IPPROTO_TCP: |
| 2177 | switch (optname) { |
| 2178 | case TCP_NODELAY: |
| 2179 | if (*(int*)optval) { |
| 2180 | tcp_nagle_disable(sock->conn->pcb.tcp); |
| 2181 | } else { |
| 2182 | tcp_nagle_enable(sock->conn->pcb.tcp); |
| 2183 | } |
| 2184 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_NODELAY) -> %s\n", |
| 2185 | s, (*(int *)optval)?"on":"off") ); |
| 2186 | break; |
| 2187 | case TCP_KEEPALIVE: |
| 2188 | sock->conn->pcb.tcp->keep_idle = (u32_t)(*(int*)optval); |
| 2189 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPALIVE) -> %"U32_F"\n", |
| 2190 | s, sock->conn->pcb.tcp->keep_idle)); |
| 2191 | break; |
| 2192 | |
| 2193 | #if LWIP_TCP_KEEPALIVE |
| 2194 | case TCP_KEEPIDLE: |
| 2195 | sock->conn->pcb.tcp->keep_idle = 1000*(u32_t)(*(int*)optval); |
| 2196 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPIDLE) -> %"U32_F"\n", |
| 2197 | s, sock->conn->pcb.tcp->keep_idle)); |
| 2198 | break; |
| 2199 | case TCP_KEEPINTVL: |
| 2200 | sock->conn->pcb.tcp->keep_intvl = 1000*(u32_t)(*(int*)optval); |
| 2201 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPINTVL) -> %"U32_F"\n", |
| 2202 | s, sock->conn->pcb.tcp->keep_intvl)); |
| 2203 | break; |
| 2204 | case TCP_KEEPCNT: |
| 2205 | sock->conn->pcb.tcp->keep_cnt = (u32_t)(*(int*)optval); |
| 2206 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_TCP, TCP_KEEPCNT) -> %"U32_F"\n", |
| 2207 | s, sock->conn->pcb.tcp->keep_cnt)); |
| 2208 | break; |
| 2209 | #endif /* LWIP_TCP_KEEPALIVE */ |
| 2210 | default: |
| 2211 | LWIP_ASSERT("unhandled optname", 0); |
| 2212 | break; |
| 2213 | } /* switch (optname) */ |
| 2214 | break; |
| 2215 | #endif /* LWIP_TCP*/ |
| 2216 | #if LWIP_UDP && LWIP_UDPLITE |
| 2217 | /* Level: IPPROTO_UDPLITE */ |
| 2218 | case IPPROTO_UDPLITE: |
| 2219 | switch (optname) { |
| 2220 | case UDPLITE_SEND_CSCOV: |
| 2221 | if ((*(int*)optval != 0) && ((*(int*)optval < 8)) || (*(int*)optval > 0xffff)) { |
| 2222 | /* don't allow illegal values! */ |
| 2223 | sock->conn->pcb.udp->chksum_len_tx = 8; |
| 2224 | } else { |
| 2225 | sock->conn->pcb.udp->chksum_len_tx = (u16_t)*(int*)optval; |
| 2226 | } |
| 2227 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UDPLITE_SEND_CSCOV) -> %d\n", |
| 2228 | s, (*(int*)optval)) ); |
| 2229 | break; |
| 2230 | case UDPLITE_RECV_CSCOV: |
| 2231 | if ((*(int*)optval != 0) && ((*(int*)optval < 8)) || (*(int*)optval > 0xffff)) { |
| 2232 | /* don't allow illegal values! */ |
| 2233 | sock->conn->pcb.udp->chksum_len_rx = 8; |
| 2234 | } else { |
| 2235 | sock->conn->pcb.udp->chksum_len_rx = (u16_t)*(int*)optval; |
| 2236 | } |
| 2237 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_setsockopt(%d, IPPROTO_UDPLITE, UDPLITE_RECV_CSCOV) -> %d\n", |
| 2238 | s, (*(int*)optval)) ); |
| 2239 | break; |
| 2240 | default: |
| 2241 | LWIP_ASSERT("unhandled optname", 0); |
| 2242 | break; |
| 2243 | } /* switch (optname) */ |
| 2244 | break; |
| 2245 | #endif /* LWIP_UDP */ |
| 2246 | default: |
| 2247 | LWIP_ASSERT("unhandled level", 0); |
| 2248 | break; |
| 2249 | } /* switch (level) */ |
| 2250 | sys_sem_signal(&sock->conn->op_completed); |
| 2251 | } |
| 2252 | |
| 2253 | int |
| 2254 | lwip_ioctl(int s, long cmd, void *argp) |
| 2255 | { |
| 2256 | struct lwip_sock *sock = get_socket(s); |
| 2257 | u8_t val; |
| 2258 | #if LWIP_SO_RCVBUF |
| 2259 | u16_t buflen = 0; |
| 2260 | s16_t recv_avail; |
| 2261 | #endif /* LWIP_SO_RCVBUF */ |
| 2262 | |
| 2263 | if (!sock) { |
| 2264 | return -1; |
| 2265 | } |
| 2266 | |
| 2267 | switch (cmd) { |
| 2268 | #if LWIP_SO_RCVBUF |
| 2269 | case FIONREAD: |
| 2270 | if (!argp) { |
| 2271 | sock_set_errno(sock, EINVAL); |
| 2272 | return -1; |
| 2273 | } |
| 2274 | |
| 2275 | SYS_ARCH_GET(sock->conn->recv_avail, recv_avail); |
| 2276 | if (recv_avail < 0) { |
| 2277 | recv_avail = 0; |
| 2278 | } |
| 2279 | *((u16_t*)argp) = (u16_t)recv_avail; |
| 2280 | |
| 2281 | /* Check if there is data left from the last recv operation. /maq 041215 */ |
| 2282 | if (sock->lastdata) { |
| 2283 | struct pbuf *p = (struct pbuf *)sock->lastdata; |
| 2284 | if (netconn_type(sock->conn) != NETCONN_TCP) { |
| 2285 | p = ((struct netbuf *)p)->p; |
| 2286 | } |
| 2287 | buflen = p->tot_len; |
| 2288 | buflen -= sock->lastoffset; |
| 2289 | |
| 2290 | *((u16_t*)argp) += buflen; |
| 2291 | } |
| 2292 | |
| 2293 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONREAD, %p) = %"U16_F"\n", s, argp, *((u16_t*)argp))); |
| 2294 | sock_set_errno(sock, 0); |
| 2295 | return 0; |
| 2296 | #endif /* LWIP_SO_RCVBUF */ |
| 2297 | |
| 2298 | case FIONBIO: |
| 2299 | val = 0; |
| 2300 | if (argp && *(u32_t*)argp) { |
| 2301 | val = 1; |
| 2302 | } |
| 2303 | netconn_set_nonblocking(sock->conn, val); |
| 2304 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, FIONBIO, %d)\n", s, val)); |
| 2305 | sock_set_errno(sock, 0); |
| 2306 | return 0; |
| 2307 | |
| 2308 | default: |
| 2309 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_ioctl(%d, UNIMPL: 0x%lx, %p)\n", s, cmd, argp)); |
| 2310 | sock_set_errno(sock, ENOSYS); /* not yet implemented */ |
| 2311 | return -1; |
| 2312 | } /* switch (cmd) */ |
| 2313 | } |
| 2314 | |
| 2315 | /** A minimal implementation of fcntl. |
| 2316 | * Currently only the commands F_GETFL and F_SETFL are implemented. |
| 2317 | * Only the flag O_NONBLOCK is implemented. |
| 2318 | */ |
| 2319 | int |
| 2320 | lwip_fcntl(int s, int cmd, int val) |
| 2321 | { |
| 2322 | struct lwip_sock *sock = get_socket(s); |
| 2323 | int ret = -1; |
| 2324 | |
| 2325 | if (!sock || !sock->conn) { |
| 2326 | return -1; |
| 2327 | } |
| 2328 | |
| 2329 | switch (cmd) { |
| 2330 | case F_GETFL: |
| 2331 | ret = netconn_is_nonblocking(sock->conn) ? O_NONBLOCK : 0; |
| 2332 | break; |
| 2333 | case F_SETFL: |
| 2334 | if ((val & ~O_NONBLOCK) == 0) { |
| 2335 | /* only O_NONBLOCK, all other bits are zero */ |
| 2336 | netconn_set_nonblocking(sock->conn, val & O_NONBLOCK); |
| 2337 | ret = 0; |
| 2338 | } |
| 2339 | break; |
| 2340 | default: |
| 2341 | LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_fcntl(%d, UNIMPL: %d, %d)\n", s, cmd, val)); |
| 2342 | break; |
| 2343 | } |
| 2344 | return ret; |
| 2345 | } |
| 2346 | |
| 2347 | #endif /* LWIP_SOCKET */ |