adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2002, 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. |
adamdunkels | 06f897e | 2004-06-06 05:59:20 +0000 | [diff] [blame] | 13 | * 3. The name of the author may not be used to endorse or promote |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 14 | * products derived from this software without specific prior |
| 15 | * written permission. |
| 16 | * |
| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS |
| 18 | * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| 19 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY |
| 21 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
| 23 | * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 24 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 25 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 26 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 27 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 28 | * |
| 29 | * This file is part of the uIP TCP/IP stack. |
| 30 | * |
adamdunkels | f2f8cb2 | 2004-07-04 11:35:07 +0000 | [diff] [blame] | 31 | * $Id: smtp.c,v 1.6 2004/07/04 11:35:08 adamdunkels Exp $ |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 32 | * |
| 33 | */ |
| 34 | |
| 35 | #include "uip.h" |
| 36 | #include "smtp.h" |
| 37 | |
| 38 | #include "smtp-strings.h" |
| 39 | |
adamdunkels | f2f8cb2 | 2004-07-04 11:35:07 +0000 | [diff] [blame] | 40 | #include "tcpip.h" |
| 41 | |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 42 | #include <string.h> |
| 43 | |
| 44 | #define STATE_SEND_NONE 0 |
| 45 | #define STATE_SEND_HELO 1 |
| 46 | #define STATE_SEND_MAIL_FROM 2 |
| 47 | #define STATE_SEND_RCPT_TO 3 |
| 48 | #define STATE_SEND_DATA 4 |
| 49 | #define STATE_SEND_DATA_HEADERS 5 |
| 50 | #define STATE_SEND_DATA_MESSAGE 6 |
| 51 | #define STATE_SEND_DATA_END 7 |
| 52 | #define STATE_SEND_QUIT 8 |
| 53 | #define STATE_SEND_DONE 9 |
| 54 | |
| 55 | static char *localhostname; |
| 56 | static u16_t smtpserver[2]; |
| 57 | |
| 58 | |
| 59 | |
| 60 | #define ISO_nl 0x0a |
| 61 | #define ISO_cr 0x0d |
| 62 | |
| 63 | #define ISO_period 0x2e |
| 64 | |
| 65 | #define ISO_2 0x32 |
| 66 | #define ISO_3 0x33 |
| 67 | #define ISO_4 0x34 |
| 68 | #define ISO_5 0x35 |
| 69 | |
| 70 | |
| 71 | struct smtp_state { |
| 72 | u8_t state; |
| 73 | char *to; |
| 74 | char *from; |
| 75 | char *subject; |
| 76 | char *msg; |
| 77 | u16_t msglen; |
| 78 | |
| 79 | u16_t sentlen, textlen; |
| 80 | u16_t sendptr; |
| 81 | |
| 82 | }; |
| 83 | |
| 84 | |
| 85 | static struct smtp_state s; |
| 86 | |
| 87 | /*-----------------------------------------------------------------------------------*/ |
| 88 | static void |
| 89 | senddata(void) |
| 90 | { |
| 91 | char *textptr; |
| 92 | |
| 93 | if(s.textlen != 0 && |
| 94 | s.textlen == s.sendptr) { |
| 95 | return; |
| 96 | } |
| 97 | |
| 98 | textptr = (char *)uip_appdata; |
| 99 | switch(s.state) { |
| 100 | case STATE_SEND_HELO: |
| 101 | /* Create HELO message. */ |
| 102 | strcpy(textptr, smtp_helo); |
| 103 | textptr += sizeof(smtp_helo) - 1; |
| 104 | strcpy(textptr, localhostname); |
| 105 | textptr += strlen(localhostname); |
| 106 | *textptr = ISO_cr; |
| 107 | ++textptr; |
| 108 | *textptr = ISO_nl; |
| 109 | ++textptr; |
| 110 | /* printf("s.sendptr %d\n", s.sendptr);*/ |
| 111 | if(s.sendptr == 0) { |
| 112 | s.textlen = textptr - (char *)uip_appdata; |
| 113 | /* printf("s.textlen %d\n", s.textlen);*/ |
| 114 | } |
| 115 | textptr = (char *)uip_appdata; |
| 116 | break; |
| 117 | case STATE_SEND_MAIL_FROM: |
| 118 | /* Create MAIL FROM message. */ |
| 119 | strcpy(textptr, smtp_mail_from); |
| 120 | textptr += sizeof(smtp_mail_from) - 1; |
| 121 | strcpy(textptr, s.from); |
| 122 | textptr += strlen(s.from); |
| 123 | *textptr = ISO_cr; |
| 124 | ++textptr; |
| 125 | *textptr = ISO_nl; |
| 126 | ++textptr; |
| 127 | if(s.sendptr == 0) { |
| 128 | s.textlen = textptr - (char *)uip_appdata; |
| 129 | } |
| 130 | textptr = (char *)uip_appdata; |
| 131 | break; |
| 132 | case STATE_SEND_RCPT_TO: |
| 133 | /* Create RCPT_TO message. */ |
| 134 | strcpy(textptr, smtp_rcpt_to); |
| 135 | textptr += sizeof(smtp_rcpt_to) - 1; |
| 136 | strcpy(textptr, s.to); |
| 137 | textptr += strlen(s.to); |
| 138 | *textptr = ISO_cr; |
| 139 | ++textptr; |
| 140 | *textptr = ISO_nl; |
| 141 | ++textptr; |
| 142 | if(s.sendptr == 0) { |
| 143 | s.textlen = textptr - (char *)uip_appdata; |
| 144 | } |
| 145 | textptr = (char *)uip_appdata; |
| 146 | break; |
| 147 | case STATE_SEND_DATA: |
| 148 | strcpy(textptr, smtp_data); |
| 149 | textptr += sizeof(smtp_data) - 1; |
| 150 | *textptr = ISO_cr; |
| 151 | ++textptr; |
| 152 | *textptr = ISO_nl; |
| 153 | ++textptr; |
| 154 | if(s.sendptr == 0) { |
| 155 | s.textlen = textptr - (char *)uip_appdata; |
| 156 | } |
| 157 | textptr = (char *)uip_appdata; |
| 158 | break; |
| 159 | case STATE_SEND_DATA_HEADERS: |
| 160 | /* Create mail headers. */ |
| 161 | strcpy(textptr, smtp_to); |
| 162 | textptr += sizeof(smtp_to) - 1; |
| 163 | strcpy(textptr, s.to); |
| 164 | textptr += strlen(s.to); |
| 165 | *textptr = ISO_cr; |
| 166 | ++textptr; |
| 167 | *textptr = ISO_nl; |
| 168 | ++textptr; |
| 169 | |
| 170 | strcpy(textptr, smtp_from); |
| 171 | textptr += sizeof(smtp_from) - 1; |
| 172 | strcpy(textptr, s.from); |
| 173 | textptr += strlen(s.from); |
| 174 | *textptr = ISO_cr; |
| 175 | ++textptr; |
| 176 | *textptr = ISO_nl; |
| 177 | ++textptr; |
| 178 | |
| 179 | strcpy(textptr, smtp_subject); |
| 180 | textptr += sizeof(smtp_subject) - 1; |
| 181 | strcpy(textptr, s.subject); |
| 182 | textptr += strlen(s.subject); |
| 183 | *textptr = ISO_cr; |
| 184 | ++textptr; |
| 185 | *textptr = ISO_nl; |
| 186 | ++textptr; |
| 187 | |
| 188 | if(s.sendptr == 0) { |
| 189 | s.textlen = textptr - (char *)uip_appdata; |
| 190 | } |
| 191 | textptr = (char *)uip_appdata; |
| 192 | break; |
| 193 | case STATE_SEND_DATA_MESSAGE: |
| 194 | textptr = s.msg; |
| 195 | if(s.sendptr == 0) { |
| 196 | s.textlen = s.msglen; |
| 197 | } |
| 198 | break; |
| 199 | case STATE_SEND_DATA_END: |
| 200 | *textptr = ISO_cr; |
| 201 | ++textptr; |
| 202 | *textptr = ISO_nl; |
| 203 | ++textptr; |
| 204 | *textptr = ISO_period; |
| 205 | ++textptr; |
| 206 | *textptr = ISO_cr; |
| 207 | ++textptr; |
| 208 | *textptr = ISO_nl; |
| 209 | ++textptr; |
| 210 | if(s.sendptr == 0) { |
| 211 | s.textlen = 5; |
| 212 | } |
| 213 | textptr = (char *)uip_appdata; |
| 214 | break; |
| 215 | case STATE_SEND_QUIT: |
| 216 | strcpy(textptr, smtp_quit); |
| 217 | textptr += sizeof(smtp_quit) - 1; |
| 218 | *textptr = ISO_cr; |
| 219 | ++textptr; |
| 220 | *textptr = ISO_nl; |
| 221 | ++textptr; |
| 222 | if(s.sendptr == 0) { |
| 223 | s.textlen = textptr - (char *)uip_appdata; |
| 224 | } |
| 225 | textptr = (char *)uip_appdata; |
| 226 | break; |
| 227 | default: |
| 228 | return; |
| 229 | } |
| 230 | |
| 231 | textptr += s.sendptr; |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 232 | |
| 233 | if(s.textlen - s.sendptr > uip_mss()) { |
| 234 | s.sentlen = uip_mss(); |
| 235 | } else { |
| 236 | s.sentlen = s.textlen - s.sendptr; |
| 237 | } |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 238 | |
| 239 | /* textptr[s.sentlen] = 0; |
| 240 | printf("Senidng '%s'\n", textptr);*/ |
| 241 | |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 242 | uip_send(textptr, s.sentlen); |
| 243 | } |
| 244 | /*-----------------------------------------------------------------------------------*/ |
| 245 | static void |
| 246 | acked(void) |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 247 | { |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 248 | s.sendptr += s.sentlen; |
| 249 | s.sentlen = 0; |
| 250 | |
| 251 | if(s.sendptr == s.textlen) { |
| 252 | switch(s.state) { |
| 253 | case STATE_SEND_DATA_HEADERS: |
| 254 | s.state = STATE_SEND_DATA_MESSAGE; |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 255 | s.sendptr = s.textlen = 0; |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 256 | break; |
| 257 | case STATE_SEND_DATA_MESSAGE: |
| 258 | s.state = STATE_SEND_DATA_END; |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 259 | s.sendptr = s.textlen = 0; |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 260 | break; |
| 261 | case STATE_SEND_DATA_END: |
| 262 | s.state = STATE_SEND_QUIT; |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 263 | s.sendptr = s.textlen = 0; |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 264 | break; |
| 265 | case STATE_SEND_QUIT: |
| 266 | s.state = STATE_SEND_DONE; |
| 267 | smtp_done(SMTP_ERR_OK); |
| 268 | uip_close(); |
| 269 | break; |
| 270 | } |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 271 | } |
| 272 | } |
| 273 | /*-----------------------------------------------------------------------------------*/ |
| 274 | static void |
| 275 | newdata(void) |
| 276 | { |
| 277 | if(*(char *)uip_appdata == ISO_5) { |
| 278 | smtp_done(1); |
| 279 | uip_abort(); |
| 280 | return; |
| 281 | } |
| 282 | /* printf("Got %d bytes: '%s'\n", uip_datalen(), |
| 283 | uip_appdata);*/ |
| 284 | switch(s.state) { |
| 285 | case STATE_SEND_NONE: |
| 286 | if(strncmp((char *)uip_appdata, smtp_220, 3) == 0) { |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 287 | /* printf("Newdata(): SEND_NONE, got 220, towards SEND_HELO\n");*/ |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 288 | s.state = STATE_SEND_HELO; |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 289 | s.sendptr = 0; |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 290 | } |
| 291 | break; |
| 292 | case STATE_SEND_HELO: |
| 293 | if(*(char *)uip_appdata == ISO_2) { |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 294 | /* printf("Newdata(): SEND_HELO, got 2*, towards SEND_MAIL_FROM\n");*/ |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 295 | s.state = STATE_SEND_MAIL_FROM; |
| 296 | s.sendptr = 0; |
| 297 | } |
| 298 | break; |
| 299 | case STATE_SEND_MAIL_FROM: |
| 300 | if(*(char *)uip_appdata == ISO_2) { |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 301 | /* printf("Newdata(): SEND_MAIL_FROM, got 2*, towards SEND_RCPT_TO\n"); */ |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 302 | /* printf("2\n");*/ |
| 303 | s.state = STATE_SEND_RCPT_TO; |
| 304 | s.textlen = s.sendptr = 0; |
| 305 | } |
| 306 | break; |
| 307 | case STATE_SEND_RCPT_TO: |
| 308 | if(*(char *)uip_appdata == ISO_2) { |
| 309 | /* printf("2\n");*/ |
| 310 | s.state = STATE_SEND_DATA; |
| 311 | s.textlen = s.sendptr = 0; |
| 312 | } |
| 313 | break; |
| 314 | case STATE_SEND_DATA: |
| 315 | if(*(char *)uip_appdata == ISO_3) { |
| 316 | /* printf("3\n");*/ |
| 317 | s.state = STATE_SEND_DATA_HEADERS; |
| 318 | s.textlen = s.sendptr = 0; |
| 319 | } |
| 320 | break; |
| 321 | case STATE_SEND_DATA_HEADERS: |
| 322 | if(*(char *)uip_appdata == ISO_3) { |
| 323 | /* printf("3\n");*/ |
| 324 | s.state = STATE_SEND_DATA_MESSAGE; |
| 325 | s.textlen = s.sendptr = 0; |
| 326 | } |
| 327 | break; |
| 328 | } |
| 329 | |
| 330 | } |
| 331 | /*-----------------------------------------------------------------------------------*/ |
adamdunkels | f2f8cb2 | 2004-07-04 11:35:07 +0000 | [diff] [blame] | 332 | /*DISPATCHER_UIPCALL(smtp_appcall, state)*/ |
| 333 | void |
| 334 | smtp_appcall(void *state) |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 335 | { |
| 336 | if(uip_connected()) { |
| 337 | /* senddata();*/ |
| 338 | return; |
| 339 | } |
| 340 | if(uip_acked()) { |
| 341 | acked(); |
| 342 | } |
adamdunkels | cd583a5 | 2003-08-11 22:23:54 +0000 | [diff] [blame] | 343 | if(uip_newdata()) { |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 344 | newdata(); |
| 345 | } |
| 346 | if(uip_rexmit() || |
| 347 | uip_newdata() || |
| 348 | uip_acked()) { |
| 349 | senddata(); |
| 350 | } else if(uip_poll()) { |
| 351 | senddata(); |
| 352 | } |
| 353 | /* if(uip_closed()) { |
| 354 | printf("Dnoe\n"); |
| 355 | }*/ |
| 356 | |
| 357 | |
| 358 | } |
| 359 | /*-----------------------------------------------------------------------------------*/ |
| 360 | unsigned char |
| 361 | smtp_send(char *to, char *from, char *subject, |
| 362 | char *msg, u16_t msglen) |
| 363 | { |
| 364 | struct uip_conn *conn; |
| 365 | |
adamdunkels | f2f8cb2 | 2004-07-04 11:35:07 +0000 | [diff] [blame] | 366 | conn = tcp_connect(smtpserver, HTONS(25), NULL); |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 367 | if(conn == NULL) { |
| 368 | return 0; |
| 369 | } |
adamdunkels | ca9ddcb | 2003-03-19 14:13:31 +0000 | [diff] [blame] | 370 | |
| 371 | s.state = STATE_SEND_NONE; |
| 372 | s.sentlen = s.sendptr = s.textlen = 0; |
| 373 | s.to = to; |
| 374 | s.from = from; |
| 375 | s.subject = subject; |
| 376 | s.msg = msg; |
| 377 | s.msglen = msglen; |
| 378 | |
| 379 | return 1; |
| 380 | } |
| 381 | /*-----------------------------------------------------------------------------------*/ |
| 382 | void |
| 383 | smtp_configure(char *lhostname, u16_t *server) |
| 384 | { |
| 385 | localhostname = lhostname; |
| 386 | smtpserver[0] = server[0]; |
| 387 | smtpserver[1] = server[1]; |
| 388 | } |
| 389 | /*-----------------------------------------------------------------------------------*/ |