Mercurial > hg > nginx
annotate src/mail/ngx_mail_parse.c @ 1136:68f30ab68bb7
Many changes:
*) rename imap to mail, sort pop3/imap functions
*) smtp auth support
*) pop3 starttls only
*) fix segfault if cram-md5 was used without apop
| author | Igor Sysoev <igor@sysoev.ru> |
|---|---|
| date | Mon, 19 Mar 2007 13:36:56 +0000 |
| parents | src/imap/ngx_imap_parse.c@e3aa8f305d21 |
| children | 27f2299e0d80 |
| rev | line source |
|---|---|
|
441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
| 1136 | 10 #include <ngx_mail.h> |
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11 |
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12 |
| 1136 | 13 ngx_int_t ngx_pop3_parse_command(ngx_mail_session_t *s) |
| 14 { | |
| 15 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 16 ngx_str_t *arg; | |
| 17 enum { | |
| 18 sw_start = 0, | |
| 19 sw_spaces_before_argument, | |
| 20 sw_argument, | |
| 21 sw_almost_done | |
| 22 } state; | |
| 23 | |
| 24 state = s->state; | |
| 25 | |
| 26 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 27 ch = *p; | |
| 28 | |
| 29 switch (state) { | |
| 30 | |
| 31 /* POP3 command */ | |
| 32 case sw_start: | |
| 33 if (ch == ' ' || ch == CR || ch == LF) { | |
| 34 c = s->buffer->start; | |
| 35 | |
| 36 if (p - c == 4) { | |
| 37 | |
| 38 c0 = ngx_toupper(c[0]); | |
| 39 c1 = ngx_toupper(c[1]); | |
| 40 c2 = ngx_toupper(c[2]); | |
| 41 c3 = ngx_toupper(c[3]); | |
| 42 | |
| 43 if (c0 == 'U' && c1 == 'S' && c2 == 'E' && c3 == 'R') | |
| 44 { | |
| 45 s->command = NGX_POP3_USER; | |
| 46 | |
| 47 } else if (c0 == 'P' && c1 == 'A' && c2 == 'S' && c3 == 'S') | |
| 48 { | |
| 49 s->command = NGX_POP3_PASS; | |
| 50 | |
| 51 } else if (c0 == 'A' && c1 == 'P' && c2 == 'O' && c3 == 'P') | |
| 52 { | |
| 53 s->command = NGX_POP3_APOP; | |
| 54 | |
| 55 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') | |
| 56 { | |
| 57 s->command = NGX_POP3_QUIT; | |
| 58 | |
| 59 } else if (c0 == 'C' && c1 == 'A' && c2 == 'P' && c3 == 'A') | |
| 60 { | |
| 61 s->command = NGX_POP3_CAPA; | |
| 62 | |
| 63 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') | |
| 64 { | |
| 65 s->command = NGX_POP3_AUTH; | |
| 66 | |
| 67 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') | |
| 68 { | |
| 69 s->command = NGX_POP3_NOOP; | |
| 70 #if (NGX_MAIL_SSL) | |
| 71 } else if (c0 == 'S' && c1 == 'T' && c2 == 'L' && c3 == 'S') | |
| 72 { | |
| 73 s->command = NGX_POP3_STLS; | |
| 74 #endif | |
| 75 } else { | |
| 76 goto invalid; | |
| 77 } | |
| 78 | |
| 79 } else { | |
| 80 goto invalid; | |
| 81 } | |
| 82 | |
| 83 switch (ch) { | |
| 84 case ' ': | |
| 85 state = sw_spaces_before_argument; | |
| 86 break; | |
| 87 case CR: | |
| 88 state = sw_almost_done; | |
| 89 break; | |
| 90 case LF: | |
| 91 goto done; | |
| 92 } | |
| 93 break; | |
| 94 } | |
| 95 | |
| 96 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 97 goto invalid; | |
| 98 } | |
| 99 | |
| 100 break; | |
| 101 | |
| 102 case sw_spaces_before_argument: | |
| 103 switch (ch) { | |
| 104 case ' ': | |
| 105 break; | |
| 106 case CR: | |
| 107 state = sw_almost_done; | |
| 108 s->arg_end = p; | |
| 109 break; | |
| 110 case LF: | |
| 111 s->arg_end = p; | |
| 112 goto done; | |
| 113 default: | |
| 114 if (s->args.nelts <= 2) { | |
| 115 state = sw_argument; | |
| 116 s->arg_start = p; | |
| 117 break; | |
| 118 } | |
| 119 goto invalid; | |
| 120 } | |
| 121 break; | |
| 122 | |
| 123 case sw_argument: | |
| 124 switch (ch) { | |
| 125 | |
| 126 case ' ': | |
| 127 | |
| 128 /* | |
| 129 * the space should be considered as part of the at username | |
| 130 * or password, but not of argument in other commands | |
| 131 */ | |
| 132 | |
| 133 if (s->command == NGX_POP3_USER | |
| 134 || s->command == NGX_POP3_PASS) | |
| 135 { | |
| 136 break; | |
| 137 } | |
| 138 | |
| 139 /* fall through */ | |
| 140 | |
| 141 case CR: | |
| 142 case LF: | |
| 143 arg = ngx_array_push(&s->args); | |
| 144 if (arg == NULL) { | |
| 145 return NGX_ERROR; | |
| 146 } | |
| 147 arg->len = p - s->arg_start; | |
| 148 arg->data = s->arg_start; | |
| 149 s->arg_start = NULL; | |
| 150 | |
| 151 switch (ch) { | |
| 152 case ' ': | |
| 153 state = sw_spaces_before_argument; | |
| 154 break; | |
| 155 case CR: | |
| 156 state = sw_almost_done; | |
| 157 break; | |
| 158 case LF: | |
| 159 goto done; | |
| 160 } | |
| 161 break; | |
| 162 | |
| 163 default: | |
| 164 break; | |
| 165 } | |
| 166 break; | |
| 167 | |
| 168 case sw_almost_done: | |
| 169 switch (ch) { | |
| 170 case LF: | |
| 171 goto done; | |
| 172 default: | |
| 173 goto invalid; | |
| 174 } | |
| 175 } | |
| 176 } | |
| 177 | |
| 178 s->buffer->pos = p; | |
| 179 s->state = state; | |
| 180 | |
| 181 return NGX_AGAIN; | |
| 182 | |
| 183 done: | |
| 184 | |
| 185 s->buffer->pos = p + 1; | |
| 186 | |
| 187 if (s->arg_start) { | |
| 188 arg = ngx_array_push(&s->args); | |
| 189 if (arg == NULL) { | |
| 190 return NGX_ERROR; | |
| 191 } | |
| 192 arg->len = s->arg_end - s->arg_start; | |
| 193 arg->data = s->arg_start; | |
| 194 s->arg_start = NULL; | |
| 195 } | |
| 196 | |
| 197 s->state = (s->command != NGX_POP3_AUTH) ? sw_start : sw_argument; | |
| 198 | |
| 199 return NGX_OK; | |
| 200 | |
| 201 invalid: | |
| 202 | |
| 203 s->state = sw_start; | |
| 204 s->arg_start = NULL; | |
| 205 | |
| 206 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 207 } | |
| 208 | |
| 209 | |
| 210 ngx_int_t ngx_imap_parse_command(ngx_mail_session_t *s) | |
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211 { |
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212 u_char ch, *p, *c; |
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213 ngx_str_t *arg; |
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214 enum { |
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215 sw_start = 0, |
| 527 | 216 sw_spaces_before_command, |
| 217 sw_command, | |
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218 sw_spaces_before_argument, |
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219 sw_argument, |
| 543 | 220 sw_backslash, |
| 527 | 221 sw_literal, |
| 543 | 222 sw_no_sync_literal_argument, |
| 527 | 223 sw_start_literal_argument, |
| 224 sw_literal_argument, | |
| 225 sw_end_literal_argument, | |
| 226 sw_almost_done | |
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227 } state; |
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228 |
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229 state = s->state; |
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230 |
| 527 | 231 for (p = s->buffer->pos; p < s->buffer->last; p++) { |
| 232 ch = *p; | |
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233 |
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234 switch (state) { |
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235 |
| 527 | 236 /* IMAP tag */ |
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237 case sw_start: |
| 527 | 238 switch (ch) { |
| 239 case ' ': | |
| 240 s->tag.len = p - s->buffer->start + 1; | |
| 241 s->tag.data = s->buffer->start; | |
| 242 state = sw_spaces_before_command; | |
| 243 break; | |
| 244 case CR: | |
| 245 s->state = sw_start; | |
| 1136 | 246 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 247 case LF: |
| 248 s->state = sw_start; | |
| 1136 | 249 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 250 } |
| 251 break; | |
|
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252 |
| 527 | 253 case sw_spaces_before_command: |
| 254 switch (ch) { | |
| 255 case ' ': | |
| 256 break; | |
| 257 case CR: | |
| 258 s->state = sw_start; | |
| 1136 | 259 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 260 case LF: |
| 261 s->state = sw_start; | |
| 1136 | 262 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 263 default: |
| 264 s->cmd_start = p; | |
| 265 state = sw_command; | |
| 266 break; | |
| 267 } | |
| 268 break; | |
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269 |
| 527 | 270 case sw_command: |
| 271 if (ch == ' ' || ch == CR || ch == LF) { | |
| 272 | |
| 273 c = s->cmd_start; | |
| 274 | |
| 275 switch (p - c) { | |
| 276 | |
| 277 case 4: | |
| 278 if ((c[0] == 'N' || c[0] == 'n') | |
| 279 && (c[1] == 'O'|| c[1] == 'o') | |
| 280 && (c[2] == 'O'|| c[2] == 'o') | |
| 281 && (c[3] == 'P'|| c[3] == 'p')) | |
|
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282 { |
| 527 | 283 s->command = NGX_IMAP_NOOP; |
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284 |
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285 } else { |
| 527 | 286 goto invalid; |
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287 } |
| 527 | 288 break; |
| 289 | |
| 290 case 5: | |
| 291 if ((c[0] == 'L'|| c[0] == 'l') | |
| 292 && (c[1] == 'O'|| c[1] == 'o') | |
| 293 && (c[2] == 'G'|| c[2] == 'g') | |
| 294 && (c[3] == 'I'|| c[3] == 'i') | |
| 295 && (c[4] == 'N'|| c[4] == 'n')) | |
| 296 { | |
| 297 s->command = NGX_IMAP_LOGIN; | |
| 298 | |
| 299 } else { | |
| 300 goto invalid; | |
| 301 } | |
| 302 break; | |
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303 |
| 527 | 304 case 6: |
| 305 if ((c[0] == 'L'|| c[0] == 'l') | |
| 306 && (c[1] == 'O'|| c[1] == 'o') | |
| 307 && (c[2] == 'G'|| c[2] == 'g') | |
| 308 && (c[3] == 'O'|| c[3] == 'o') | |
| 309 && (c[4] == 'U'|| c[4] == 'u') | |
| 310 && (c[5] == 'T'|| c[5] == 't')) | |
| 311 { | |
| 312 s->command = NGX_IMAP_LOGOUT; | |
| 313 | |
| 314 } else { | |
| 315 goto invalid; | |
| 316 } | |
| 317 break; | |
| 318 | |
| 1136 | 319 #if (NGX_MAIL_SSL) |
| 583 | 320 case 8: |
| 321 if ((c[0] == 'S'|| c[0] == 's') | |
| 322 && (c[1] == 'T'|| c[1] == 't') | |
| 323 && (c[2] == 'A'|| c[2] == 'a') | |
| 324 && (c[3] == 'R'|| c[3] == 'r') | |
| 325 && (c[4] == 'T'|| c[4] == 't') | |
| 326 && (c[5] == 'T'|| c[5] == 't') | |
| 327 && (c[6] == 'L'|| c[6] == 'l') | |
| 328 && (c[7] == 'S'|| c[7] == 's')) | |
| 329 { | |
| 330 s->command = NGX_IMAP_STARTTLS; | |
| 331 | |
| 332 } else { | |
| 333 goto invalid; | |
| 334 } | |
| 335 break; | |
| 336 #endif | |
| 337 | |
| 527 | 338 case 10: |
| 339 if ((c[0] == 'C'|| c[0] == 'c') | |
| 340 && (c[1] == 'A'|| c[1] == 'a') | |
| 341 && (c[2] == 'P'|| c[2] == 'p') | |
| 342 && (c[3] == 'A'|| c[3] == 'a') | |
| 343 && (c[4] == 'B'|| c[4] == 'b') | |
| 344 && (c[5] == 'I'|| c[5] == 'i') | |
| 345 && (c[6] == 'L'|| c[6] == 'l') | |
| 346 && (c[7] == 'I'|| c[7] == 'i') | |
| 347 && (c[8] == 'T'|| c[8] == 't') | |
| 348 && (c[9] == 'Y'|| c[9] == 'y')) | |
| 349 { | |
| 350 s->command = NGX_IMAP_CAPABILITY; | |
| 351 | |
| 352 } else { | |
| 353 goto invalid; | |
| 354 } | |
| 355 break; | |
| 356 | |
| 357 default: | |
| 358 goto invalid; | |
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359 } |
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360 |
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361 switch (ch) { |
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362 case ' ': |
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363 state = sw_spaces_before_argument; |
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364 break; |
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365 case CR: |
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366 state = sw_almost_done; |
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367 break; |
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368 case LF: |
| 527 | 369 goto done; |
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370 } |
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371 break; |
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372 } |
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373 |
| 527 | 374 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { |
| 375 goto invalid; | |
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376 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
377 |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
378 break; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
379 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
380 case sw_spaces_before_argument: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
381 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
382 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
383 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
384 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
385 state = sw_almost_done; |
| 527 | 386 s->arg_end = p; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
387 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
388 case LF: |
| 527 | 389 s->arg_end = p; |
| 390 goto done; | |
| 391 case '"': | |
| 392 if (s->args.nelts <= 2) { | |
| 393 s->quoted = 1; | |
| 394 s->arg_start = p + 1; | |
| 395 state = sw_argument; | |
| 396 break; | |
| 397 } | |
| 398 goto invalid; | |
| 399 case '{': | |
| 400 if (s->args.nelts <= 2) { | |
| 401 state = sw_literal; | |
| 402 break; | |
| 403 } | |
| 404 goto invalid; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
405 default: |
| 527 | 406 if (s->args.nelts <= 2) { |
| 407 s->arg_start = p; | |
| 408 state = sw_argument; | |
| 409 break; | |
| 410 } | |
| 411 goto invalid; | |
| 412 } | |
| 413 break; | |
| 414 | |
| 415 case sw_argument: | |
| 416 switch (ch) { | |
| 417 case '"': | |
| 418 if (!s->quoted) { | |
| 419 break; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
420 } |
| 527 | 421 s->quoted = 0; |
| 422 /* fall through */ | |
| 423 case ' ': | |
| 424 case CR: | |
| 425 case LF: | |
| 426 arg = ngx_array_push(&s->args); | |
| 427 if (arg == NULL) { | |
| 428 return NGX_ERROR; | |
| 429 } | |
| 430 arg->len = p - s->arg_start; | |
| 431 arg->data = s->arg_start; | |
| 432 s->arg_start = NULL; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
433 |
| 527 | 434 switch (ch) { |
| 435 case '"': | |
| 436 case ' ': | |
| 437 state = sw_spaces_before_argument; | |
| 438 break; | |
| 439 case CR: | |
| 440 state = sw_almost_done; | |
| 441 break; | |
| 442 case LF: | |
| 443 goto done; | |
| 444 } | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
445 break; |
| 543 | 446 case '\\': |
| 447 if (s->quoted) { | |
| 448 s->backslash = 1; | |
| 449 state = sw_backslash; | |
| 450 } | |
| 451 break; | |
| 452 } | |
| 453 break; | |
| 454 | |
| 455 case sw_backslash: | |
| 456 switch (ch) { | |
| 457 case CR: | |
| 458 case LF: | |
| 459 goto invalid; | |
| 460 default: | |
| 461 state = sw_argument; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
462 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
463 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
464 |
| 527 | 465 case sw_literal: |
| 466 if (ch >= '0' && ch <= '9') { | |
| 467 s->literal_len = s->literal_len * 10 + (ch - '0'); | |
| 468 break; | |
| 469 } | |
| 470 if (ch == '}') { | |
| 471 state = sw_start_literal_argument; | |
| 472 break; | |
| 473 } | |
| 543 | 474 if (ch == '+') { |
| 475 state = sw_no_sync_literal_argument; | |
| 476 break; | |
| 477 } | |
| 478 goto invalid; | |
| 479 | |
| 480 case sw_no_sync_literal_argument: | |
| 481 if (ch == '}') { | |
| 482 s->no_sync_literal = 1; | |
| 483 state = sw_start_literal_argument; | |
| 484 break; | |
| 485 } | |
| 527 | 486 goto invalid; |
| 487 | |
| 488 case sw_start_literal_argument: | |
| 489 switch (ch) { | |
| 490 case CR: | |
| 491 break; | |
| 492 case LF: | |
| 493 s->buffer->pos = p + 1; | |
| 494 s->arg_start = p + 1; | |
| 543 | 495 if (s->no_sync_literal == 0) { |
| 496 s->state = sw_literal_argument; | |
| 497 return NGX_IMAP_NEXT; | |
| 498 } | |
| 499 state = sw_literal_argument; | |
| 500 s->no_sync_literal = 0; | |
| 501 break; | |
| 502 default: | |
| 503 goto invalid; | |
| 527 | 504 } |
| 543 | 505 break; |
| 527 | 506 |
| 507 case sw_literal_argument: | |
| 529 | 508 if (s->literal_len && --s->literal_len) { |
| 527 | 509 break; |
| 510 } | |
| 511 | |
| 512 arg = ngx_array_push(&s->args); | |
| 513 if (arg == NULL) { | |
| 514 return NGX_ERROR; | |
| 515 } | |
| 516 arg->len = p + 1 - s->arg_start; | |
| 517 arg->data = s->arg_start; | |
| 518 s->arg_start = NULL; | |
| 519 state = sw_end_literal_argument; | |
| 520 | |
| 521 break; | |
| 522 | |
| 523 case sw_end_literal_argument: | |
| 524 switch (ch) { | |
| 525 case '{': | |
| 526 if (s->args.nelts <= 2) { | |
| 527 state = sw_literal; | |
| 528 break; | |
| 529 } | |
| 530 goto invalid; | |
| 531 case CR: | |
| 532 state = sw_almost_done; | |
| 533 break; | |
| 534 case LF: | |
| 535 goto done; | |
| 536 default: | |
| 529 | 537 state = sw_spaces_before_argument; |
| 538 break; | |
| 527 | 539 } |
| 540 break; | |
| 541 | |
| 542 case sw_almost_done: | |
| 543 switch (ch) { | |
| 544 case LF: | |
| 545 goto done; | |
| 546 default: | |
| 547 goto invalid; | |
| 548 } | |
| 549 } | |
| 550 } | |
| 551 | |
| 552 s->buffer->pos = p; | |
| 553 s->state = state; | |
| 554 | |
| 555 return NGX_AGAIN; | |
| 556 | |
| 557 done: | |
| 558 | |
| 559 s->buffer->pos = p + 1; | |
| 560 | |
| 561 if (s->arg_start) { | |
| 562 arg = ngx_array_push(&s->args); | |
| 563 if (arg == NULL) { | |
| 564 return NGX_ERROR; | |
| 565 } | |
| 566 arg->len = s->arg_end - s->arg_start; | |
| 567 arg->data = s->arg_start; | |
| 543 | 568 |
| 527 | 569 s->arg_start = NULL; |
| 570 s->cmd_start = NULL; | |
| 571 s->quoted = 0; | |
| 543 | 572 s->no_sync_literal = 0; |
| 527 | 573 s->literal_len = 0; |
| 574 } | |
| 575 | |
| 576 s->state = sw_start; | |
| 577 | |
| 578 return NGX_OK; | |
| 579 | |
| 580 invalid: | |
| 581 | |
| 582 s->state = sw_start; | |
| 583 s->quoted = 0; | |
| 543 | 584 s->no_sync_literal = 0; |
| 527 | 585 s->literal_len = 0; |
| 586 | |
| 1136 | 587 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 588 } |
| 589 | |
| 590 | |
| 1136 | 591 ngx_int_t ngx_smtp_parse_command(ngx_mail_session_t *s) |
| 527 | 592 { |
| 593 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 594 ngx_str_t *arg; | |
| 595 enum { | |
| 596 sw_start = 0, | |
| 597 sw_spaces_before_argument, | |
| 598 sw_argument, | |
| 599 sw_almost_done | |
| 600 } state; | |
| 601 | |
| 602 state = s->state; | |
| 603 | |
| 604 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 605 ch = *p; | |
| 606 | |
| 607 switch (state) { | |
| 608 | |
| 1136 | 609 /* SMTP command */ |
| 527 | 610 case sw_start: |
| 611 if (ch == ' ' || ch == CR || ch == LF) { | |
| 612 c = s->buffer->start; | |
| 613 | |
| 614 if (p - c == 4) { | |
| 615 | |
| 616 c0 = ngx_toupper(c[0]); | |
| 617 c1 = ngx_toupper(c[1]); | |
| 618 c2 = ngx_toupper(c[2]); | |
| 619 c3 = ngx_toupper(c[3]); | |
| 620 | |
| 1136 | 621 if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'O') |
| 527 | 622 { |
| 1136 | 623 s->command = NGX_SMTP_HELO; |
| 527 | 624 |
| 1136 | 625 } else if (c0 == 'E' && c1 == 'H' && c2 == 'L' && c3 == 'O') |
| 800 | 626 { |
| 1136 | 627 s->command = NGX_SMTP_EHLO; |
| 800 | 628 |
| 527 | 629 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') |
| 630 { | |
| 1136 | 631 s->command = NGX_SMTP_QUIT; |
| 527 | 632 |
| 809 | 633 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') |
| 634 { | |
| 1136 | 635 s->command = NGX_SMTP_AUTH; |
| 809 | 636 |
| 527 | 637 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') |
| 638 { | |
| 1136 | 639 s->command = NGX_SMTP_NOOP; |
| 640 | |
| 641 } else if (c0 == 'M' && c1 == 'A' && c2 == 'I' && c3 == 'L') | |
| 583 | 642 { |
| 1136 | 643 s->command = NGX_SMTP_MAIL; |
| 644 | |
| 645 } else if (c0 == 'R' && c1 == 'S' && c2 == 'E' && c3 == 'T') | |
| 646 { | |
| 647 s->command = NGX_SMTP_RSET; | |
| 648 | |
| 527 | 649 } else { |
| 650 goto invalid; | |
| 651 } | |
| 652 | |
| 653 } else { | |
| 654 goto invalid; | |
| 655 } | |
| 656 | |
| 657 switch (ch) { | |
| 658 case ' ': | |
| 659 state = sw_spaces_before_argument; | |
| 660 break; | |
| 661 case CR: | |
| 662 state = sw_almost_done; | |
| 663 break; | |
| 664 case LF: | |
| 665 goto done; | |
| 666 } | |
| 667 break; | |
| 668 } | |
| 669 | |
| 670 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 671 goto invalid; | |
| 672 } | |
| 673 | |
| 674 break; | |
| 675 | |
| 676 case sw_spaces_before_argument: | |
| 677 switch (ch) { | |
| 678 case ' ': | |
| 679 break; | |
| 680 case CR: | |
| 681 state = sw_almost_done; | |
| 682 s->arg_end = p; | |
| 683 break; | |
| 684 case LF: | |
| 685 s->arg_end = p; | |
| 686 goto done; | |
| 687 default: | |
| 688 if (s->args.nelts <= 2) { | |
| 689 state = sw_argument; | |
| 690 s->arg_start = p; | |
| 691 break; | |
| 692 } | |
| 693 goto invalid; | |
| 694 } | |
| 695 break; | |
| 696 | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
697 case sw_argument: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
698 switch (ch) { |
| 800 | 699 case ' ': |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
700 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
701 case LF: |
| 501 | 702 arg = ngx_array_push(&s->args); |
| 703 if (arg == NULL) { | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
704 return NGX_ERROR; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
705 } |
| 527 | 706 arg->len = p - s->arg_start; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
707 arg->data = s->arg_start; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
708 s->arg_start = NULL; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
709 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
710 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
711 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
712 state = sw_spaces_before_argument; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
713 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
714 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
715 state = sw_almost_done; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
716 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
717 case LF: |
| 527 | 718 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
719 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
720 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
721 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
722 default: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
723 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
724 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
725 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
726 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
727 case sw_almost_done: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
728 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
729 case LF: |
| 527 | 730 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
731 default: |
| 527 | 732 goto invalid; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
733 } |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
734 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
735 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
736 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
737 s->buffer->pos = p; |
| 527 | 738 s->state = state; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
739 |
| 527 | 740 return NGX_AGAIN; |
| 741 | |
| 742 done: | |
| 743 | |
| 744 s->buffer->pos = p + 1; | |
| 745 | |
| 746 if (s->arg_start) { | |
| 747 arg = ngx_array_push(&s->args); | |
| 748 if (arg == NULL) { | |
| 749 return NGX_ERROR; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
750 } |
| 527 | 751 arg->len = s->arg_end - s->arg_start; |
| 752 arg->data = s->arg_start; | |
| 753 s->arg_start = NULL; | |
| 754 } | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
755 |
| 1136 | 756 s->state = (s->command != NGX_SMTP_AUTH) ? sw_start : sw_argument; |
| 757 | |
| 527 | 758 return NGX_OK; |
| 759 | |
| 760 invalid: | |
| 761 | |
| 762 s->state = sw_start; | |
| 810 | 763 s->arg_start = NULL; |
| 527 | 764 |
| 1136 | 765 return NGX_MAIL_PARSE_INVALID_COMMAND; |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
766 } |