adamdunkels | a2f3c42 | 2004-09-12 20:24:53 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2004, Adam Dunkels. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * 1. Redistributions of source code must retain the above copyright |
| 9 | * notice, this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright |
| 11 | * notice, this list of conditions and the following disclaimer in the |
| 12 | * documentation and/or other materials provided with the distribution. |
| 13 | * 3. Neither the name of the Institute nor the names of its contributors |
| 14 | * may be used to endorse or promote products derived from this software |
| 15 | * without specific prior written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND |
| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE |
| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| 27 | * SUCH DAMAGE. |
| 28 | * |
| 29 | * This file is part of the Contiki operating system. |
| 30 | * |
| 31 | * Author: Adam Dunkels <adam@sics.se> |
| 32 | * |
oliverschmidt | 19c1876 | 2005-04-17 22:42:33 +0000 | [diff] [blame] | 33 | * $Id: ftpc.c,v 1.3 2005/04/17 22:42:33 oliverschmidt Exp $ |
adamdunkels | a2f3c42 | 2004-09-12 20:24:53 +0000 | [diff] [blame] | 34 | */ |
adamdunkels | 499d1b5 | 2004-08-09 20:09:27 +0000 | [diff] [blame] | 35 | #include "contiki.h" |
| 36 | #include "ftpc.h" |
| 37 | |
| 38 | #include <string.h> |
oliverschmidt | 19c1876 | 2005-04-17 22:42:33 +0000 | [diff] [blame] | 39 | #include <stdio.h> |
adamdunkels | 499d1b5 | 2004-08-09 20:09:27 +0000 | [diff] [blame] | 40 | |
| 41 | #define ISO_nl 0x0a |
| 42 | #define ISO_cr 0x0d |
| 43 | |
| 44 | #define DATAPORT 6510 |
| 45 | |
| 46 | #define MAX_FILENAMELEN 32 |
| 47 | |
| 48 | struct ftp_dataconn { |
| 49 | unsigned char type; |
| 50 | unsigned char conntype; |
| 51 | #define CONNTYPE_LIST 0 |
| 52 | #define CONNTYPE_FILE 1 |
| 53 | |
| 54 | u16_t port; |
| 55 | |
| 56 | unsigned char filenameptr; |
| 57 | char filename[MAX_FILENAMELEN]; |
| 58 | |
| 59 | |
| 60 | }; |
| 61 | |
| 62 | struct ftp_connection { |
| 63 | unsigned char type; |
| 64 | #define TYPE_CONTROL 1 |
| 65 | #define TYPE_DATA 2 |
| 66 | #define TYPE_ABORT 3 |
| 67 | #define TYPE_CLOSE 4 |
| 68 | |
| 69 | unsigned char state; |
| 70 | #define STATE_NONE 0 |
| 71 | #define STATE_INITIAL 1 |
| 72 | #define STATE_SEND_USER 2 |
| 73 | #define STATE_USER_SENT 3 |
| 74 | #define STATE_SEND_PASS 4 |
| 75 | #define STATE_PASS_SENT 5 |
| 76 | #define STATE_SEND_PORT 6 |
| 77 | #define STATE_PORT_SENT 7 |
| 78 | #define STATE_SEND_OPTIONS 8 |
| 79 | #define STATE_OPTION_SENT 9 |
| 80 | #define STATE_CONNECTED 10 |
| 81 | #define STATE_SEND_NLST 11 |
| 82 | #define STATE_NLST_SENT 12 |
| 83 | #define STATE_SEND_RETR 13 |
| 84 | #define STATE_RETR_SENT 14 |
| 85 | |
| 86 | #define STATE_SEND_CWD 15 |
| 87 | #define STATE_CWD_SENT 16 |
| 88 | |
| 89 | #define STATE_SEND_CDUP 17 |
| 90 | #define STATE_CDUP_SENT 18 |
| 91 | |
| 92 | #define STATE_SEND_QUIT 19 |
| 93 | #define STATE_QUIT_SENT 20 |
| 94 | |
| 95 | unsigned char connected_confirmed; |
| 96 | |
| 97 | struct ftp_dataconn dataconn; |
| 98 | |
| 99 | char code[3]; |
| 100 | unsigned char codeptr; |
| 101 | |
| 102 | unsigned char optionsptr; |
| 103 | |
| 104 | char filename[MAX_FILENAMELEN]; |
| 105 | |
| 106 | }; |
| 107 | |
| 108 | #define NUM_OPTIONS 1 |
| 109 | static const struct { |
| 110 | unsigned char num; |
| 111 | char *commands[NUM_OPTIONS]; |
| 112 | } options = { |
| 113 | NUM_OPTIONS, |
| 114 | {"TYPE I\r\n"} |
| 115 | }; |
| 116 | |
| 117 | static struct ftp_connection *waiting_for_dataconn; |
| 118 | |
| 119 | MEMB(connections, sizeof(struct ftp_connection), 1); |
| 120 | |
| 121 | /*---------------------------------------------------------------------------*/ |
| 122 | void |
| 123 | ftpc_init(void) |
| 124 | { |
| 125 | memb_init(&connections); |
| 126 | /* tcp_listen(HTONS(DATAPORT));*/ |
| 127 | } |
| 128 | /*---------------------------------------------------------------------------*/ |
| 129 | void * |
| 130 | ftpc_connect(u16_t *ipaddr, u16_t port) |
| 131 | { |
| 132 | struct ftp_connection *c; |
| 133 | |
| 134 | c = (struct ftp_connection *)memb_alloc(&connections); |
| 135 | if(c == NULL) { |
| 136 | return NULL; |
| 137 | } |
| 138 | c->type = TYPE_CONTROL; |
| 139 | c->state = STATE_INITIAL; |
| 140 | c->connected_confirmed = 0; |
| 141 | c->codeptr = 0; |
| 142 | c->dataconn.type = TYPE_DATA; |
| 143 | c->dataconn.port = DATAPORT; |
| 144 | tcp_listen(HTONS(DATAPORT)); |
| 145 | |
| 146 | if(tcp_connect(ipaddr, port, c) == NULL) { |
| 147 | memb_free(&connections, c); |
| 148 | return NULL; |
| 149 | } |
| 150 | |
| 151 | return c; |
| 152 | } |
| 153 | /*---------------------------------------------------------------------------*/ |
| 154 | static void |
| 155 | handle_input(struct ftp_connection *c) |
| 156 | { |
| 157 | int code; |
| 158 | |
| 159 | code = (c->code[0] - '0') * 100 + |
| 160 | (c->code[1] - '0') * 10 + |
| 161 | (c->code[2] - '0'); |
| 162 | /* printf("Handle input code %d state %d\n", code, c->state);*/ |
| 163 | |
| 164 | if(c->state == STATE_INITIAL) { |
| 165 | if(code == 220) { |
| 166 | c->state = STATE_SEND_USER; |
| 167 | } |
| 168 | } else if(c->state == STATE_USER_SENT) { |
| 169 | if(code == 331) { |
| 170 | c->state = STATE_SEND_PASS; |
| 171 | } |
| 172 | } else if(c->state == STATE_PASS_SENT) { |
| 173 | if(code == 230) { |
| 174 | c->state = STATE_SEND_OPTIONS; |
| 175 | c->optionsptr = 0; |
| 176 | } |
| 177 | } else if(c->state == STATE_PORT_SENT) { |
| 178 | c->state = STATE_CONNECTED; |
| 179 | if(c->connected_confirmed == 0) { |
| 180 | ftpc_connected(c); |
| 181 | c->connected_confirmed = 1; |
| 182 | } |
| 183 | } else if(c->state == STATE_OPTION_SENT) { |
| 184 | if(c->optionsptr >= options.num) { |
| 185 | c->state = STATE_SEND_PORT; |
| 186 | } else { |
| 187 | c->state = STATE_SEND_OPTIONS; |
| 188 | } |
| 189 | } else if((c->state == STATE_NLST_SENT || |
| 190 | c->state == STATE_RETR_SENT || |
| 191 | c->state == STATE_CONNECTED)) { |
| 192 | if(code == 226 || code == 550) { |
| 193 | tcp_unlisten(htons(c->dataconn.port)); |
| 194 | ++c->dataconn.port; |
| 195 | tcp_listen(htons(c->dataconn.port)); |
| 196 | c->state = STATE_SEND_PORT; |
| 197 | } |
| 198 | |
| 199 | if(code == 550) { |
| 200 | ftpc_list_file(NULL); |
| 201 | } |
| 202 | } else if(c->state == STATE_CWD_SENT || |
| 203 | c->state == STATE_CDUP_SENT) { |
| 204 | c->state = STATE_CONNECTED; |
| 205 | ftpc_cwd_done(code); |
| 206 | /* } else if(c->state == STATE_) { |
| 207 | c->state = STATE_CONNECTED;*/ |
| 208 | } |
| 209 | } |
| 210 | /*---------------------------------------------------------------------------*/ |
| 211 | static void |
| 212 | newdata(struct ftp_connection *c) |
| 213 | { |
| 214 | u16_t i; |
| 215 | u8_t d; |
| 216 | |
| 217 | for(i = 0; i < uip_datalen(); ++i) { |
| 218 | d = ((char *)uip_appdata)[i]; |
| 219 | if(c->codeptr < sizeof(c->code)) { |
| 220 | c->code[c->codeptr] = d; |
| 221 | ++c->codeptr; |
| 222 | } |
| 223 | |
| 224 | if(d == ISO_nl) { |
| 225 | handle_input(c); |
| 226 | c->codeptr = 0; |
| 227 | } |
| 228 | } |
| 229 | } |
| 230 | /*---------------------------------------------------------------------------*/ |
| 231 | static void |
| 232 | acked(struct ftp_connection *c) |
| 233 | { |
| 234 | switch(c->state) { |
| 235 | case STATE_SEND_USER: |
| 236 | c->state = STATE_USER_SENT; |
| 237 | break; |
| 238 | case STATE_SEND_PASS: |
| 239 | c->state = STATE_PASS_SENT; |
| 240 | break; |
| 241 | case STATE_SEND_PORT: |
| 242 | c->state = STATE_PORT_SENT; |
| 243 | break; |
| 244 | case STATE_SEND_OPTIONS: |
| 245 | ++c->optionsptr; |
| 246 | c->state = STATE_OPTION_SENT; |
| 247 | break; |
| 248 | case STATE_SEND_NLST: |
| 249 | c->state = STATE_NLST_SENT; |
| 250 | break; |
| 251 | case STATE_SEND_RETR: |
| 252 | c->state = STATE_RETR_SENT; |
| 253 | break; |
| 254 | case STATE_SEND_CWD: |
| 255 | c->state = STATE_CWD_SENT; |
| 256 | break; |
| 257 | case STATE_SEND_CDUP: |
| 258 | c->state = STATE_CDUP_SENT; |
| 259 | break; |
| 260 | case STATE_SEND_QUIT: |
| 261 | c->state = STATE_QUIT_SENT; |
| 262 | uip_close(); |
| 263 | break; |
| 264 | } |
| 265 | } |
| 266 | /*---------------------------------------------------------------------------*/ |
| 267 | static void |
| 268 | senddata(struct ftp_connection *c) |
| 269 | { |
| 270 | u16_t len; |
| 271 | |
| 272 | switch(c->state) { |
| 273 | case STATE_SEND_USER: |
| 274 | strcpy(uip_appdata, "USER "); |
| 275 | strncpy(uip_appdata + 5, ftpc_username(), uip_mss() - 7); |
| 276 | len = strlen(ftpc_username()); |
| 277 | strcpy(uip_appdata + 5 + len, "\r\n"); |
| 278 | uip_send(uip_appdata, len + 2 + 5); |
| 279 | break; |
| 280 | case STATE_SEND_PASS: |
| 281 | strcpy(uip_appdata, "PASS "); |
| 282 | strncpy(uip_appdata + 5, ftpc_password(), uip_mss() - 7); |
| 283 | len = strlen(ftpc_password()); |
| 284 | strcpy(uip_appdata + 5 + len, "\r\n"); |
| 285 | uip_send(uip_appdata, len + 2 + 5); |
| 286 | break; |
| 287 | case STATE_SEND_PORT: |
| 288 | len = sprintf(uip_appdata, "PORT %d,%d,%d,%d,%d,%d\n", |
| 289 | uip_ipaddr1(uip_hostaddr), |
| 290 | uip_ipaddr2(uip_hostaddr), |
| 291 | uip_ipaddr3(uip_hostaddr), |
| 292 | uip_ipaddr4(uip_hostaddr), |
| 293 | (c->dataconn.port) >> 8, |
| 294 | (c->dataconn.port) & 0xff); |
| 295 | uip_send(uip_appdata, len); |
| 296 | break; |
| 297 | case STATE_SEND_OPTIONS: |
| 298 | len = strlen(options.commands[c->optionsptr]); |
| 299 | uip_send(options.commands[c->optionsptr], len); |
| 300 | break; |
| 301 | case STATE_SEND_NLST: |
| 302 | uip_send("NLST\r\n", 6); |
| 303 | break; |
| 304 | case STATE_SEND_RETR: |
| 305 | len = sprintf(uip_appdata, "RETR %s\r\n", c->filename); |
| 306 | uip_send(uip_appdata, len); |
| 307 | break; |
| 308 | case STATE_SEND_CWD: |
| 309 | len = sprintf(uip_appdata, "CWD %s\r\n", c->filename); |
| 310 | uip_send(uip_appdata, len); |
| 311 | break; |
| 312 | case STATE_SEND_CDUP: |
| 313 | uip_send("CDUP\r\n", 6); |
| 314 | break; |
| 315 | case STATE_SEND_QUIT: |
| 316 | uip_send("QUIT\r\n", 6); |
| 317 | break; |
| 318 | } |
| 319 | } |
| 320 | /*---------------------------------------------------------------------------*/ |
| 321 | void |
| 322 | ftpc_appcall(void *state) |
| 323 | { |
| 324 | int i, t; |
| 325 | struct ftp_connection *c = (struct ftp_connection *)state; |
| 326 | struct ftp_dataconn *d = (struct ftp_dataconn *)state; |
| 327 | |
| 328 | if(uip_connected()) { |
| 329 | if(state == NULL) { |
| 330 | if(waiting_for_dataconn != NULL) { |
| 331 | d = &waiting_for_dataconn->dataconn; |
| 332 | waiting_for_dataconn = NULL; |
| 333 | tcp_markconn(uip_conn, d); |
| 334 | d->filenameptr = 0; |
| 335 | |
| 336 | } else { |
| 337 | uip_abort(); |
| 338 | } |
| 339 | } else { |
| 340 | /* tcp_listen(uip_conn->lport);*/ |
| 341 | senddata(c); |
| 342 | } |
| 343 | return; |
| 344 | } |
| 345 | |
| 346 | if(c->type == TYPE_ABORT) { |
| 347 | uip_abort(); |
| 348 | return; |
| 349 | } |
| 350 | |
| 351 | if(c->type == TYPE_CLOSE) { |
| 352 | uip_close(); |
| 353 | c->type = TYPE_CONTROL; |
| 354 | return; |
| 355 | } |
| 356 | |
| 357 | if(c->type == TYPE_CONTROL) { |
| 358 | if(uip_closed()) { |
| 359 | c->dataconn.type = TYPE_ABORT; |
| 360 | ftpc_closed(); |
| 361 | memb_free(&connections, c); |
| 362 | } |
| 363 | if(uip_aborted()) { |
| 364 | c->dataconn.type = TYPE_ABORT; |
| 365 | ftpc_aborted(); |
| 366 | memb_free(&connections, c); |
| 367 | } |
| 368 | if(uip_timedout()) { |
| 369 | c->dataconn.type = TYPE_ABORT; |
| 370 | ftpc_timedout(); |
| 371 | memb_free(&connections, c); |
| 372 | } |
| 373 | |
| 374 | |
| 375 | if(uip_acked()) { |
| 376 | acked(c); |
| 377 | } |
| 378 | if(uip_newdata()) { |
| 379 | newdata(c); |
| 380 | } |
| 381 | if(uip_rexmit() || |
| 382 | uip_newdata() || |
| 383 | uip_acked()) { |
| 384 | senddata(c); |
| 385 | } else if(uip_poll()) { |
| 386 | senddata(c); |
| 387 | } |
| 388 | } else { |
| 389 | if(d->conntype == CONNTYPE_LIST) { |
| 390 | if(uip_newdata()) { |
| 391 | for(i = 0; i < uip_datalen(); ++i) { |
| 392 | t = ((char *)uip_appdata)[i]; |
| 393 | |
| 394 | if(d->filenameptr < sizeof(d->filename) - 1 && |
| 395 | t != ISO_cr && |
| 396 | t != ISO_nl) { |
| 397 | d->filename[d->filenameptr] = t; |
| 398 | ++d->filenameptr; |
| 399 | } |
| 400 | |
| 401 | if(t == ISO_nl) { |
| 402 | d->filename[d->filenameptr] = 0; |
| 403 | ftpc_list_file(d->filename); |
| 404 | d->filenameptr = 0; |
| 405 | } |
| 406 | |
| 407 | } |
| 408 | } |
| 409 | if(uip_closed()) { |
| 410 | ftpc_list_file(NULL); |
| 411 | } |
| 412 | } else { |
| 413 | if(uip_newdata()) { |
| 414 | ftpc_data(uip_appdata, uip_datalen()); |
| 415 | /* printf("Received %d data bytes: '%s'\n", |
| 416 | uip_datalen(), uip_appdata);*/ |
| 417 | } else if(uip_closed() || uip_timedout() || uip_aborted()) { |
| 418 | ftpc_data(NULL, 0); |
| 419 | } |
| 420 | } |
| 421 | } |
| 422 | } |
| 423 | /*---------------------------------------------------------------------------*/ |
| 424 | char |
| 425 | ftpc_list(void *conn) |
| 426 | { |
| 427 | struct ftp_connection *c; |
| 428 | |
| 429 | c = conn; |
| 430 | |
| 431 | if(c == NULL || |
| 432 | c->state != STATE_CONNECTED) { |
| 433 | return 0; |
| 434 | } |
| 435 | |
| 436 | c->state = STATE_SEND_NLST; |
| 437 | c->dataconn.conntype = CONNTYPE_LIST; |
| 438 | waiting_for_dataconn = c; |
| 439 | return 1; |
| 440 | } |
| 441 | /*---------------------------------------------------------------------------*/ |
| 442 | char |
| 443 | ftpc_get(void *conn, char *filename) |
| 444 | { |
| 445 | struct ftp_connection *c; |
| 446 | |
| 447 | c = conn; |
| 448 | |
| 449 | if(c == NULL || |
| 450 | c->state != STATE_CONNECTED) { |
| 451 | return 0; |
| 452 | } |
| 453 | |
| 454 | strncpy(c->filename, filename, sizeof(c->filename)); |
| 455 | |
| 456 | c->state = STATE_SEND_RETR; |
| 457 | c->dataconn.conntype = CONNTYPE_FILE; |
| 458 | waiting_for_dataconn = c; |
| 459 | return 1; |
| 460 | } |
| 461 | /*---------------------------------------------------------------------------*/ |
| 462 | void |
| 463 | ftpc_close(void *conn) |
| 464 | { |
| 465 | struct ftp_connection *c; |
| 466 | |
| 467 | c = conn; |
| 468 | |
| 469 | if(c == NULL) { |
| 470 | return; |
| 471 | } |
| 472 | |
| 473 | c->type = TYPE_CLOSE; |
| 474 | } |
| 475 | /*---------------------------------------------------------------------------*/ |
| 476 | void |
| 477 | ftpc_cwd(void *conn, char *dirname) |
| 478 | { |
| 479 | struct ftp_connection *c; |
| 480 | |
| 481 | c = conn; |
| 482 | |
| 483 | if(c == NULL || |
| 484 | c->state != STATE_CONNECTED) { |
| 485 | return; |
| 486 | } |
| 487 | |
| 488 | strncpy(c->filename, dirname, sizeof(c->filename)); |
| 489 | c->state = STATE_SEND_CWD; |
| 490 | } |
| 491 | /*---------------------------------------------------------------------------*/ |
| 492 | void |
| 493 | ftpc_cdup(void *conn) |
| 494 | { |
| 495 | struct ftp_connection *c; |
| 496 | |
| 497 | c = conn; |
| 498 | |
| 499 | if(c == NULL || |
| 500 | c->state != STATE_CONNECTED) { |
| 501 | return; |
| 502 | } |
| 503 | |
| 504 | c->state = STATE_SEND_CDUP; |
| 505 | } |
| 506 | /*---------------------------------------------------------------------------*/ |