Mercurial > hg > nginx
annotate src/mail/ngx_mail_parse.c @ 4412:d620f497c50f
Copyright updated.
| author | Maxim Konovalov <maxim@nginx.com> |
|---|---|
| date | Wed, 18 Jan 2012 15:07:43 +0000 |
| parents | a59b26eee816 |
| children | 4c36e15651f7 |
| rev | line source |
|---|---|
|
441
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1 |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
| 4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
| 1136 | 11 #include <ngx_mail.h> |
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12 |
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13 |
| 1477 | 14 ngx_int_t |
| 15 ngx_mail_pop3_parse_command(ngx_mail_session_t *s) | |
| 1136 | 16 { |
| 17 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 18 ngx_str_t *arg; | |
| 19 enum { | |
| 20 sw_start = 0, | |
| 21 sw_spaces_before_argument, | |
| 22 sw_argument, | |
| 23 sw_almost_done | |
| 24 } state; | |
| 25 | |
| 26 state = s->state; | |
| 27 | |
| 28 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 29 ch = *p; | |
| 30 | |
| 31 switch (state) { | |
| 32 | |
| 33 /* POP3 command */ | |
| 34 case sw_start: | |
| 35 if (ch == ' ' || ch == CR || ch == LF) { | |
| 36 c = s->buffer->start; | |
| 37 | |
| 38 if (p - c == 4) { | |
| 39 | |
| 40 c0 = ngx_toupper(c[0]); | |
| 41 c1 = ngx_toupper(c[1]); | |
| 42 c2 = ngx_toupper(c[2]); | |
| 43 c3 = ngx_toupper(c[3]); | |
| 44 | |
| 45 if (c0 == 'U' && c1 == 'S' && c2 == 'E' && c3 == 'R') | |
| 46 { | |
| 47 s->command = NGX_POP3_USER; | |
| 48 | |
| 49 } else if (c0 == 'P' && c1 == 'A' && c2 == 'S' && c3 == 'S') | |
| 50 { | |
| 51 s->command = NGX_POP3_PASS; | |
| 52 | |
| 53 } else if (c0 == 'A' && c1 == 'P' && c2 == 'O' && c3 == 'P') | |
| 54 { | |
| 55 s->command = NGX_POP3_APOP; | |
| 56 | |
| 57 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') | |
| 58 { | |
| 59 s->command = NGX_POP3_QUIT; | |
| 60 | |
| 61 } else if (c0 == 'C' && c1 == 'A' && c2 == 'P' && c3 == 'A') | |
| 62 { | |
| 63 s->command = NGX_POP3_CAPA; | |
| 64 | |
| 65 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') | |
| 66 { | |
| 67 s->command = NGX_POP3_AUTH; | |
| 68 | |
| 69 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') | |
| 70 { | |
| 71 s->command = NGX_POP3_NOOP; | |
| 72 #if (NGX_MAIL_SSL) | |
| 73 } else if (c0 == 'S' && c1 == 'T' && c2 == 'L' && c3 == 'S') | |
| 74 { | |
| 75 s->command = NGX_POP3_STLS; | |
| 76 #endif | |
| 77 } else { | |
| 78 goto invalid; | |
| 79 } | |
| 80 | |
| 81 } else { | |
| 82 goto invalid; | |
| 83 } | |
| 84 | |
| 85 switch (ch) { | |
| 86 case ' ': | |
| 87 state = sw_spaces_before_argument; | |
| 88 break; | |
| 89 case CR: | |
| 90 state = sw_almost_done; | |
| 91 break; | |
| 92 case LF: | |
| 93 goto done; | |
| 94 } | |
| 95 break; | |
| 96 } | |
| 97 | |
| 98 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 99 goto invalid; | |
| 100 } | |
| 101 | |
| 102 break; | |
| 103 | |
| 104 case sw_spaces_before_argument: | |
| 105 switch (ch) { | |
| 106 case ' ': | |
| 107 break; | |
| 108 case CR: | |
| 109 state = sw_almost_done; | |
| 110 s->arg_end = p; | |
| 111 break; | |
| 112 case LF: | |
| 113 s->arg_end = p; | |
| 114 goto done; | |
| 115 default: | |
| 116 if (s->args.nelts <= 2) { | |
| 117 state = sw_argument; | |
| 118 s->arg_start = p; | |
| 119 break; | |
| 120 } | |
| 121 goto invalid; | |
| 122 } | |
| 123 break; | |
| 124 | |
| 125 case sw_argument: | |
| 126 switch (ch) { | |
| 127 | |
| 128 case ' ': | |
| 129 | |
| 130 /* | |
| 131 * the space should be considered as part of the at username | |
| 132 * or password, but not of argument in other commands | |
| 133 */ | |
| 134 | |
| 135 if (s->command == NGX_POP3_USER | |
| 136 || s->command == NGX_POP3_PASS) | |
| 137 { | |
| 138 break; | |
| 139 } | |
| 140 | |
| 141 /* fall through */ | |
| 142 | |
| 143 case CR: | |
| 144 case LF: | |
| 145 arg = ngx_array_push(&s->args); | |
| 146 if (arg == NULL) { | |
| 147 return NGX_ERROR; | |
| 148 } | |
| 149 arg->len = p - s->arg_start; | |
| 150 arg->data = s->arg_start; | |
| 151 s->arg_start = NULL; | |
| 152 | |
| 153 switch (ch) { | |
| 154 case ' ': | |
| 155 state = sw_spaces_before_argument; | |
| 156 break; | |
| 157 case CR: | |
| 158 state = sw_almost_done; | |
| 159 break; | |
| 160 case LF: | |
| 161 goto done; | |
| 162 } | |
| 163 break; | |
| 164 | |
| 165 default: | |
| 166 break; | |
| 167 } | |
| 168 break; | |
| 169 | |
| 170 case sw_almost_done: | |
| 171 switch (ch) { | |
| 172 case LF: | |
| 173 goto done; | |
| 174 default: | |
| 175 goto invalid; | |
| 176 } | |
| 177 } | |
| 178 } | |
| 179 | |
| 180 s->buffer->pos = p; | |
| 181 s->state = state; | |
| 182 | |
| 183 return NGX_AGAIN; | |
| 184 | |
| 185 done: | |
| 186 | |
| 187 s->buffer->pos = p + 1; | |
| 188 | |
| 189 if (s->arg_start) { | |
| 190 arg = ngx_array_push(&s->args); | |
| 191 if (arg == NULL) { | |
| 192 return NGX_ERROR; | |
| 193 } | |
| 194 arg->len = s->arg_end - s->arg_start; | |
| 195 arg->data = s->arg_start; | |
| 196 s->arg_start = NULL; | |
| 197 } | |
| 198 | |
| 199 s->state = (s->command != NGX_POP3_AUTH) ? sw_start : sw_argument; | |
| 200 | |
| 201 return NGX_OK; | |
| 202 | |
| 203 invalid: | |
| 204 | |
| 205 s->state = sw_start; | |
| 206 s->arg_start = NULL; | |
| 207 | |
| 208 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 209 } | |
| 210 | |
| 211 | |
| 1477 | 212 ngx_int_t |
| 213 ngx_mail_imap_parse_command(ngx_mail_session_t *s) | |
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214 { |
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215 u_char ch, *p, *c; |
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216 ngx_str_t *arg; |
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217 enum { |
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218 sw_start = 0, |
| 527 | 219 sw_spaces_before_command, |
| 220 sw_command, | |
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221 sw_spaces_before_argument, |
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222 sw_argument, |
| 543 | 223 sw_backslash, |
| 527 | 224 sw_literal, |
| 543 | 225 sw_no_sync_literal_argument, |
| 527 | 226 sw_start_literal_argument, |
| 227 sw_literal_argument, | |
| 228 sw_end_literal_argument, | |
| 229 sw_almost_done | |
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230 } state; |
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231 |
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232 state = s->state; |
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233 |
| 527 | 234 for (p = s->buffer->pos; p < s->buffer->last; p++) { |
| 235 ch = *p; | |
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236 |
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237 switch (state) { |
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238 |
| 527 | 239 /* IMAP tag */ |
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240 case sw_start: |
| 527 | 241 switch (ch) { |
| 242 case ' ': | |
| 243 s->tag.len = p - s->buffer->start + 1; | |
| 244 s->tag.data = s->buffer->start; | |
| 245 state = sw_spaces_before_command; | |
| 246 break; | |
| 247 case CR: | |
| 248 s->state = sw_start; | |
| 1136 | 249 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 250 case LF: |
| 251 s->state = sw_start; | |
| 1136 | 252 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 253 } |
| 254 break; | |
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255 |
| 527 | 256 case sw_spaces_before_command: |
| 257 switch (ch) { | |
| 258 case ' ': | |
| 259 break; | |
| 260 case CR: | |
| 261 s->state = sw_start; | |
| 1136 | 262 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 263 case LF: |
| 264 s->state = sw_start; | |
| 1136 | 265 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 266 default: |
| 267 s->cmd_start = p; | |
| 268 state = sw_command; | |
| 269 break; | |
| 270 } | |
| 271 break; | |
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272 |
| 527 | 273 case sw_command: |
| 274 if (ch == ' ' || ch == CR || ch == LF) { | |
| 275 | |
| 276 c = s->cmd_start; | |
| 277 | |
| 278 switch (p - c) { | |
| 279 | |
| 280 case 4: | |
| 281 if ((c[0] == 'N' || c[0] == 'n') | |
| 282 && (c[1] == 'O'|| c[1] == 'o') | |
| 283 && (c[2] == 'O'|| c[2] == 'o') | |
| 284 && (c[3] == 'P'|| c[3] == 'p')) | |
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285 { |
| 527 | 286 s->command = NGX_IMAP_NOOP; |
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287 |
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288 } else { |
| 527 | 289 goto invalid; |
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290 } |
| 527 | 291 break; |
| 292 | |
| 293 case 5: | |
| 294 if ((c[0] == 'L'|| c[0] == 'l') | |
| 295 && (c[1] == 'O'|| c[1] == 'o') | |
| 296 && (c[2] == 'G'|| c[2] == 'g') | |
| 297 && (c[3] == 'I'|| c[3] == 'i') | |
| 298 && (c[4] == 'N'|| c[4] == 'n')) | |
| 299 { | |
| 300 s->command = NGX_IMAP_LOGIN; | |
| 301 | |
| 302 } else { | |
| 303 goto invalid; | |
| 304 } | |
| 305 break; | |
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306 |
| 527 | 307 case 6: |
| 308 if ((c[0] == 'L'|| c[0] == 'l') | |
| 309 && (c[1] == 'O'|| c[1] == 'o') | |
| 310 && (c[2] == 'G'|| c[2] == 'g') | |
| 311 && (c[3] == 'O'|| c[3] == 'o') | |
| 312 && (c[4] == 'U'|| c[4] == 'u') | |
| 313 && (c[5] == 'T'|| c[5] == 't')) | |
| 314 { | |
| 315 s->command = NGX_IMAP_LOGOUT; | |
| 316 | |
| 317 } else { | |
| 318 goto invalid; | |
| 319 } | |
| 320 break; | |
| 321 | |
| 1136 | 322 #if (NGX_MAIL_SSL) |
| 583 | 323 case 8: |
| 324 if ((c[0] == 'S'|| c[0] == 's') | |
| 325 && (c[1] == 'T'|| c[1] == 't') | |
| 326 && (c[2] == 'A'|| c[2] == 'a') | |
| 327 && (c[3] == 'R'|| c[3] == 'r') | |
| 328 && (c[4] == 'T'|| c[4] == 't') | |
| 329 && (c[5] == 'T'|| c[5] == 't') | |
| 330 && (c[6] == 'L'|| c[6] == 'l') | |
| 331 && (c[7] == 'S'|| c[7] == 's')) | |
| 332 { | |
| 333 s->command = NGX_IMAP_STARTTLS; | |
| 334 | |
| 335 } else { | |
| 336 goto invalid; | |
| 337 } | |
| 338 break; | |
| 339 #endif | |
| 340 | |
| 527 | 341 case 10: |
| 342 if ((c[0] == 'C'|| c[0] == 'c') | |
| 343 && (c[1] == 'A'|| c[1] == 'a') | |
| 344 && (c[2] == 'P'|| c[2] == 'p') | |
| 345 && (c[3] == 'A'|| c[3] == 'a') | |
| 346 && (c[4] == 'B'|| c[4] == 'b') | |
| 347 && (c[5] == 'I'|| c[5] == 'i') | |
| 348 && (c[6] == 'L'|| c[6] == 'l') | |
| 349 && (c[7] == 'I'|| c[7] == 'i') | |
| 350 && (c[8] == 'T'|| c[8] == 't') | |
| 351 && (c[9] == 'Y'|| c[9] == 'y')) | |
| 352 { | |
| 353 s->command = NGX_IMAP_CAPABILITY; | |
| 354 | |
| 355 } else { | |
| 356 goto invalid; | |
| 357 } | |
| 358 break; | |
| 359 | |
| 1323 | 360 case 12: |
| 361 if ((c[0] == 'A'|| c[0] == 'a') | |
| 362 && (c[1] == 'U'|| c[1] == 'u') | |
| 363 && (c[2] == 'T'|| c[2] == 't') | |
| 364 && (c[3] == 'H'|| c[3] == 'h') | |
| 365 && (c[4] == 'E'|| c[4] == 'e') | |
| 366 && (c[5] == 'N'|| c[5] == 'n') | |
| 367 && (c[6] == 'T'|| c[6] == 't') | |
| 368 && (c[7] == 'I'|| c[7] == 'i') | |
| 369 && (c[8] == 'C'|| c[8] == 'c') | |
| 370 && (c[9] == 'A'|| c[9] == 'a') | |
| 371 && (c[10] == 'T'|| c[10] == 't') | |
| 372 && (c[11] == 'E'|| c[11] == 'e')) | |
| 373 { | |
| 374 s->command = NGX_IMAP_AUTHENTICATE; | |
| 375 | |
| 376 } else { | |
| 377 goto invalid; | |
| 378 } | |
| 379 break; | |
| 380 | |
| 527 | 381 default: |
| 382 goto invalid; | |
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383 } |
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384 |
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385 switch (ch) { |
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386 case ' ': |
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387 state = sw_spaces_before_argument; |
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388 break; |
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389 case CR: |
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390 state = sw_almost_done; |
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391 break; |
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392 case LF: |
| 527 | 393 goto done; |
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|
394 } |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
395 break; |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
396 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
397 |
| 527 | 398 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { |
| 399 goto invalid; | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
400 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
401 |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
402 break; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
403 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
404 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
|
405 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
406 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
407 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
408 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
409 state = sw_almost_done; |
| 527 | 410 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
|
411 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
412 case LF: |
| 527 | 413 s->arg_end = p; |
| 414 goto done; | |
| 415 case '"': | |
| 416 if (s->args.nelts <= 2) { | |
| 417 s->quoted = 1; | |
| 418 s->arg_start = p + 1; | |
| 419 state = sw_argument; | |
| 420 break; | |
| 421 } | |
| 422 goto invalid; | |
| 423 case '{': | |
| 424 if (s->args.nelts <= 2) { | |
| 425 state = sw_literal; | |
| 426 break; | |
| 427 } | |
| 428 goto invalid; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
429 default: |
| 527 | 430 if (s->args.nelts <= 2) { |
| 431 s->arg_start = p; | |
| 432 state = sw_argument; | |
| 433 break; | |
| 434 } | |
| 435 goto invalid; | |
| 436 } | |
| 437 break; | |
| 438 | |
| 439 case sw_argument: | |
|
1405
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
440 if (ch == ' ' && s->quoted) { |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
441 break; |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
442 } |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
443 |
| 527 | 444 switch (ch) { |
| 445 case '"': | |
| 446 if (!s->quoted) { | |
| 447 break; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
448 } |
| 527 | 449 s->quoted = 0; |
| 450 /* fall through */ | |
| 451 case ' ': | |
| 452 case CR: | |
| 453 case LF: | |
| 454 arg = ngx_array_push(&s->args); | |
| 455 if (arg == NULL) { | |
| 456 return NGX_ERROR; | |
| 457 } | |
| 458 arg->len = p - s->arg_start; | |
| 459 arg->data = s->arg_start; | |
| 460 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
|
461 |
| 527 | 462 switch (ch) { |
| 463 case '"': | |
| 464 case ' ': | |
| 465 state = sw_spaces_before_argument; | |
| 466 break; | |
| 467 case CR: | |
| 468 state = sw_almost_done; | |
| 469 break; | |
| 470 case LF: | |
| 471 goto done; | |
| 472 } | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
473 break; |
| 543 | 474 case '\\': |
| 475 if (s->quoted) { | |
| 476 s->backslash = 1; | |
| 477 state = sw_backslash; | |
| 478 } | |
| 479 break; | |
| 480 } | |
| 481 break; | |
| 482 | |
| 483 case sw_backslash: | |
| 484 switch (ch) { | |
| 485 case CR: | |
| 486 case LF: | |
| 487 goto invalid; | |
| 488 default: | |
| 489 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
|
490 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
491 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
492 |
| 527 | 493 case sw_literal: |
| 494 if (ch >= '0' && ch <= '9') { | |
| 495 s->literal_len = s->literal_len * 10 + (ch - '0'); | |
| 496 break; | |
| 497 } | |
| 498 if (ch == '}') { | |
| 499 state = sw_start_literal_argument; | |
| 500 break; | |
| 501 } | |
| 543 | 502 if (ch == '+') { |
| 503 state = sw_no_sync_literal_argument; | |
| 504 break; | |
| 505 } | |
| 506 goto invalid; | |
| 507 | |
| 508 case sw_no_sync_literal_argument: | |
| 509 if (ch == '}') { | |
| 510 s->no_sync_literal = 1; | |
| 511 state = sw_start_literal_argument; | |
| 512 break; | |
| 513 } | |
| 527 | 514 goto invalid; |
| 515 | |
| 516 case sw_start_literal_argument: | |
| 517 switch (ch) { | |
| 518 case CR: | |
| 519 break; | |
| 520 case LF: | |
| 521 s->buffer->pos = p + 1; | |
| 522 s->arg_start = p + 1; | |
| 543 | 523 if (s->no_sync_literal == 0) { |
| 524 s->state = sw_literal_argument; | |
| 525 return NGX_IMAP_NEXT; | |
| 526 } | |
| 527 state = sw_literal_argument; | |
| 528 s->no_sync_literal = 0; | |
| 529 break; | |
| 530 default: | |
| 531 goto invalid; | |
| 527 | 532 } |
| 543 | 533 break; |
| 527 | 534 |
| 535 case sw_literal_argument: | |
| 529 | 536 if (s->literal_len && --s->literal_len) { |
| 527 | 537 break; |
| 538 } | |
| 539 | |
| 540 arg = ngx_array_push(&s->args); | |
| 541 if (arg == NULL) { | |
| 542 return NGX_ERROR; | |
| 543 } | |
| 544 arg->len = p + 1 - s->arg_start; | |
| 545 arg->data = s->arg_start; | |
| 546 s->arg_start = NULL; | |
| 547 state = sw_end_literal_argument; | |
| 548 | |
| 549 break; | |
| 550 | |
| 551 case sw_end_literal_argument: | |
| 552 switch (ch) { | |
| 553 case '{': | |
| 554 if (s->args.nelts <= 2) { | |
| 555 state = sw_literal; | |
| 556 break; | |
| 557 } | |
| 558 goto invalid; | |
| 559 case CR: | |
| 560 state = sw_almost_done; | |
| 561 break; | |
| 562 case LF: | |
| 563 goto done; | |
| 564 default: | |
| 529 | 565 state = sw_spaces_before_argument; |
| 566 break; | |
| 527 | 567 } |
| 568 break; | |
| 569 | |
| 570 case sw_almost_done: | |
| 571 switch (ch) { | |
| 572 case LF: | |
| 573 goto done; | |
| 574 default: | |
| 575 goto invalid; | |
| 576 } | |
| 577 } | |
| 578 } | |
| 579 | |
| 580 s->buffer->pos = p; | |
| 581 s->state = state; | |
| 582 | |
| 583 return NGX_AGAIN; | |
| 584 | |
| 585 done: | |
| 586 | |
| 587 s->buffer->pos = p + 1; | |
| 588 | |
| 589 if (s->arg_start) { | |
| 590 arg = ngx_array_push(&s->args); | |
| 591 if (arg == NULL) { | |
| 592 return NGX_ERROR; | |
| 593 } | |
| 594 arg->len = s->arg_end - s->arg_start; | |
| 595 arg->data = s->arg_start; | |
| 543 | 596 |
| 527 | 597 s->arg_start = NULL; |
| 598 s->cmd_start = NULL; | |
| 599 s->quoted = 0; | |
| 543 | 600 s->no_sync_literal = 0; |
| 527 | 601 s->literal_len = 0; |
| 602 } | |
| 603 | |
| 1323 | 604 s->state = (s->command != NGX_IMAP_AUTHENTICATE) ? sw_start : sw_argument; |
| 527 | 605 |
| 606 return NGX_OK; | |
| 607 | |
| 608 invalid: | |
| 609 | |
| 610 s->state = sw_start; | |
| 611 s->quoted = 0; | |
| 543 | 612 s->no_sync_literal = 0; |
| 527 | 613 s->literal_len = 0; |
| 614 | |
| 1136 | 615 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 527 | 616 } |
| 617 | |
| 618 | |
| 1477 | 619 ngx_int_t |
| 620 ngx_mail_smtp_parse_command(ngx_mail_session_t *s) | |
| 527 | 621 { |
| 622 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 623 ngx_str_t *arg; | |
| 624 enum { | |
| 625 sw_start = 0, | |
| 626 sw_spaces_before_argument, | |
| 627 sw_argument, | |
| 628 sw_almost_done | |
| 629 } state; | |
| 630 | |
| 631 state = s->state; | |
| 632 | |
| 633 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 634 ch = *p; | |
| 635 | |
| 636 switch (state) { | |
| 637 | |
| 1136 | 638 /* SMTP command */ |
| 527 | 639 case sw_start: |
| 640 if (ch == ' ' || ch == CR || ch == LF) { | |
| 641 c = s->buffer->start; | |
| 642 | |
| 643 if (p - c == 4) { | |
| 644 | |
| 645 c0 = ngx_toupper(c[0]); | |
| 646 c1 = ngx_toupper(c[1]); | |
| 647 c2 = ngx_toupper(c[2]); | |
| 648 c3 = ngx_toupper(c[3]); | |
| 649 | |
| 1136 | 650 if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'O') |
| 527 | 651 { |
| 1136 | 652 s->command = NGX_SMTP_HELO; |
| 527 | 653 |
| 1136 | 654 } else if (c0 == 'E' && c1 == 'H' && c2 == 'L' && c3 == 'O') |
| 800 | 655 { |
| 1136 | 656 s->command = NGX_SMTP_EHLO; |
| 800 | 657 |
| 527 | 658 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') |
| 659 { | |
| 1136 | 660 s->command = NGX_SMTP_QUIT; |
| 527 | 661 |
| 809 | 662 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') |
| 663 { | |
| 1136 | 664 s->command = NGX_SMTP_AUTH; |
| 809 | 665 |
| 527 | 666 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') |
| 667 { | |
| 1136 | 668 s->command = NGX_SMTP_NOOP; |
| 669 | |
| 670 } else if (c0 == 'M' && c1 == 'A' && c2 == 'I' && c3 == 'L') | |
| 583 | 671 { |
| 1136 | 672 s->command = NGX_SMTP_MAIL; |
| 673 | |
| 674 } else if (c0 == 'R' && c1 == 'S' && c2 == 'E' && c3 == 'T') | |
| 675 { | |
| 676 s->command = NGX_SMTP_RSET; | |
| 677 | |
| 1322 | 678 } else if (c0 == 'R' && c1 == 'C' && c2 == 'P' && c3 == 'T') |
| 679 { | |
| 680 s->command = NGX_SMTP_RCPT; | |
| 681 | |
| 682 } else if (c0 == 'V' && c1 == 'R' && c2 == 'F' && c3 == 'Y') | |
| 683 { | |
| 684 s->command = NGX_SMTP_VRFY; | |
| 685 | |
| 686 } else if (c0 == 'E' && c1 == 'X' && c2 == 'P' && c3 == 'N') | |
| 687 { | |
| 688 s->command = NGX_SMTP_EXPN; | |
| 689 | |
| 690 } else if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'P') | |
| 691 { | |
| 692 s->command = NGX_SMTP_HELP; | |
| 693 | |
| 527 | 694 } else { |
| 695 goto invalid; | |
| 696 } | |
| 1322 | 697 #if (NGX_MAIL_SSL) |
| 698 } else if (p - c == 8) { | |
| 527 | 699 |
| 1322 | 700 if ((c[0] == 'S'|| c[0] == 's') |
| 701 && (c[1] == 'T'|| c[1] == 't') | |
| 702 && (c[2] == 'A'|| c[2] == 'a') | |
| 703 && (c[3] == 'R'|| c[3] == 'r') | |
| 704 && (c[4] == 'T'|| c[4] == 't') | |
| 705 && (c[5] == 'T'|| c[5] == 't') | |
| 706 && (c[6] == 'L'|| c[6] == 'l') | |
| 707 && (c[7] == 'S'|| c[7] == 's')) | |
| 708 { | |
| 709 s->command = NGX_SMTP_STARTTLS; | |
| 710 | |
| 711 } else { | |
| 712 goto invalid; | |
| 713 } | |
| 714 #endif | |
| 527 | 715 } else { |
| 716 goto invalid; | |
| 717 } | |
| 718 | |
| 719 switch (ch) { | |
| 720 case ' ': | |
| 721 state = sw_spaces_before_argument; | |
| 722 break; | |
| 723 case CR: | |
| 724 state = sw_almost_done; | |
| 725 break; | |
| 726 case LF: | |
| 727 goto done; | |
| 728 } | |
| 729 break; | |
| 730 } | |
| 731 | |
| 732 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 733 goto invalid; | |
| 734 } | |
| 735 | |
| 736 break; | |
| 737 | |
| 738 case sw_spaces_before_argument: | |
| 739 switch (ch) { | |
| 740 case ' ': | |
| 741 break; | |
| 742 case CR: | |
| 743 state = sw_almost_done; | |
| 744 s->arg_end = p; | |
| 745 break; | |
| 746 case LF: | |
| 747 s->arg_end = p; | |
| 748 goto done; | |
| 749 default: | |
| 2309 | 750 if (s->args.nelts <= 10) { |
| 527 | 751 state = sw_argument; |
| 752 s->arg_start = p; | |
| 753 break; | |
| 754 } | |
| 755 goto invalid; | |
| 756 } | |
| 757 break; | |
| 758 | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
759 case sw_argument: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
760 switch (ch) { |
| 800 | 761 case ' ': |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
762 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
763 case LF: |
| 501 | 764 arg = ngx_array_push(&s->args); |
| 765 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
|
766 return NGX_ERROR; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
767 } |
| 527 | 768 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
|
769 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
|
770 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
|
771 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
772 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
773 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
774 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
|
775 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
776 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
777 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
|
778 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
779 case LF: |
| 527 | 780 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
781 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
782 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
783 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
784 default: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
785 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
786 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
787 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
788 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
789 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
|
790 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
791 case LF: |
| 527 | 792 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
793 default: |
| 527 | 794 goto invalid; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
795 } |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
796 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
797 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
798 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
799 s->buffer->pos = p; |
| 527 | 800 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
|
801 |
| 527 | 802 return NGX_AGAIN; |
| 803 | |
| 804 done: | |
| 805 | |
| 806 s->buffer->pos = p + 1; | |
| 807 | |
| 808 if (s->arg_start) { | |
| 809 arg = ngx_array_push(&s->args); | |
| 810 if (arg == NULL) { | |
| 811 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
|
812 } |
| 527 | 813 arg->len = s->arg_end - s->arg_start; |
| 814 arg->data = s->arg_start; | |
| 815 s->arg_start = NULL; | |
| 816 } | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
817 |
| 1136 | 818 s->state = (s->command != NGX_SMTP_AUTH) ? sw_start : sw_argument; |
| 819 | |
| 527 | 820 return NGX_OK; |
| 821 | |
| 822 invalid: | |
| 823 | |
| 824 s->state = sw_start; | |
| 810 | 825 s->arg_start = NULL; |
| 527 | 826 |
| 1136 | 827 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
|
828 } |
| 1479 | 829 |
| 830 | |
| 831 ngx_int_t | |
| 832 ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c) | |
| 833 { | |
| 834 ngx_str_t *arg; | |
| 835 | |
| 836 #if (NGX_MAIL_SSL) | |
| 837 if (ngx_mail_starttls_only(s, c)) { | |
| 838 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 839 } | |
| 840 #endif | |
| 841 | |
| 842 arg = s->args.elts; | |
| 843 | |
| 844 if (arg[0].len == 5) { | |
| 845 | |
| 846 if (ngx_strncasecmp(arg[0].data, (u_char *) "LOGIN", 5) == 0) { | |
| 847 | |
| 848 if (s->args.nelts == 1) { | |
| 849 return NGX_MAIL_AUTH_LOGIN; | |
| 850 } | |
| 851 | |
|
2495
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
852 if (s->args.nelts == 2) { |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
853 return NGX_MAIL_AUTH_LOGIN_USERNAME; |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
854 } |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
855 |
| 1479 | 856 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 857 } | |
| 858 | |
| 859 if (ngx_strncasecmp(arg[0].data, (u_char *) "PLAIN", 5) == 0) { | |
| 860 | |
| 861 if (s->args.nelts == 1) { | |
| 862 return NGX_MAIL_AUTH_PLAIN; | |
| 863 } | |
| 864 | |
| 865 if (s->args.nelts == 2) { | |
| 866 return ngx_mail_auth_plain(s, c, 1); | |
| 867 } | |
| 868 } | |
| 869 | |
| 870 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 871 } | |
| 872 | |
| 873 if (arg[0].len == 8) { | |
| 874 | |
| 875 if (s->args.nelts != 1) { | |
| 876 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 877 } | |
| 878 | |
| 879 if (ngx_strncasecmp(arg[0].data, (u_char *) "CRAM-MD5", 8) == 0) { | |
| 880 return NGX_MAIL_AUTH_CRAM_MD5; | |
| 881 } | |
| 882 } | |
| 883 | |
| 884 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 885 } |