Mercurial > hg > nginx
annotate src/mail/ngx_mail_parse.c @ 7938:dc955d274130
Mail: connections with wrong ALPN protocols are now rejected.
This is a recommended behavior by RFC 7301 and is useful
for mitigation of protocol confusion attacks [1].
For POP3 and IMAP protocols IANA-assigned ALPN IDs are used [2].
For the SMTP protocol "smtp" is used.
[1] https://alpaca-attack.com/
[2] https://www.iana.org/assignments/tls-extensiontype-values/
| author | Vladimir Homutov <vl@nginx.com> |
|---|---|
| date | Wed, 20 Oct 2021 09:45:34 +0300 |
| parents | b38728495e1a |
| children |
| rev | line source |
|---|---|
|
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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 #include <ngx_mail_pop3_module.h> |
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13 #include <ngx_mail_imap_module.h> |
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14 #include <ngx_mail_smtp_module.h> |
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15 |
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16 |
| 1477 | 17 ngx_int_t |
| 18 ngx_mail_pop3_parse_command(ngx_mail_session_t *s) | |
| 1136 | 19 { |
| 20 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 21 ngx_str_t *arg; | |
| 22 enum { | |
| 23 sw_start = 0, | |
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24 sw_command, |
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25 sw_invalid, |
| 1136 | 26 sw_spaces_before_argument, |
| 27 sw_argument, | |
| 28 sw_almost_done | |
| 29 } state; | |
| 30 | |
| 31 state = s->state; | |
| 32 | |
| 33 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 34 ch = *p; | |
| 35 | |
| 36 switch (state) { | |
| 37 | |
| 38 /* POP3 command */ | |
| 39 case sw_start: | |
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40 s->cmd_start = p; |
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41 state = sw_command; |
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42 |
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43 /* fall through */ |
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44 |
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45 case sw_command: |
| 1136 | 46 if (ch == ' ' || ch == CR || ch == LF) { |
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47 c = s->cmd_start; |
| 1136 | 48 |
| 49 if (p - c == 4) { | |
| 50 | |
| 51 c0 = ngx_toupper(c[0]); | |
| 52 c1 = ngx_toupper(c[1]); | |
| 53 c2 = ngx_toupper(c[2]); | |
| 54 c3 = ngx_toupper(c[3]); | |
| 55 | |
| 56 if (c0 == 'U' && c1 == 'S' && c2 == 'E' && c3 == 'R') | |
| 57 { | |
| 58 s->command = NGX_POP3_USER; | |
| 59 | |
| 60 } else if (c0 == 'P' && c1 == 'A' && c2 == 'S' && c3 == 'S') | |
| 61 { | |
| 62 s->command = NGX_POP3_PASS; | |
| 63 | |
| 64 } else if (c0 == 'A' && c1 == 'P' && c2 == 'O' && c3 == 'P') | |
| 65 { | |
| 66 s->command = NGX_POP3_APOP; | |
| 67 | |
| 68 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') | |
| 69 { | |
| 70 s->command = NGX_POP3_QUIT; | |
| 71 | |
| 72 } else if (c0 == 'C' && c1 == 'A' && c2 == 'P' && c3 == 'A') | |
| 73 { | |
| 74 s->command = NGX_POP3_CAPA; | |
| 75 | |
| 76 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') | |
| 77 { | |
| 78 s->command = NGX_POP3_AUTH; | |
| 79 | |
| 80 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') | |
| 81 { | |
| 82 s->command = NGX_POP3_NOOP; | |
| 83 #if (NGX_MAIL_SSL) | |
| 84 } else if (c0 == 'S' && c1 == 'T' && c2 == 'L' && c3 == 'S') | |
| 85 { | |
| 86 s->command = NGX_POP3_STLS; | |
| 87 #endif | |
| 88 } else { | |
| 89 goto invalid; | |
| 90 } | |
| 91 | |
| 92 } else { | |
| 93 goto invalid; | |
| 94 } | |
| 95 | |
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96 s->cmd.data = s->cmd_start; |
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97 s->cmd.len = p - s->cmd_start; |
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98 |
| 1136 | 99 switch (ch) { |
| 100 case ' ': | |
| 101 state = sw_spaces_before_argument; | |
| 102 break; | |
| 103 case CR: | |
| 104 state = sw_almost_done; | |
| 105 break; | |
| 106 case LF: | |
| 107 goto done; | |
| 108 } | |
| 109 break; | |
| 110 } | |
| 111 | |
| 112 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 113 goto invalid; | |
| 114 } | |
| 115 | |
| 116 break; | |
| 117 | |
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118 case sw_invalid: |
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119 goto invalid; |
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120 |
| 1136 | 121 case sw_spaces_before_argument: |
| 122 switch (ch) { | |
| 123 case ' ': | |
| 124 break; | |
| 125 case CR: | |
| 126 state = sw_almost_done; | |
| 127 break; | |
| 128 case LF: | |
| 129 goto done; | |
| 130 default: | |
| 131 if (s->args.nelts <= 2) { | |
| 132 state = sw_argument; | |
| 133 s->arg_start = p; | |
| 134 break; | |
| 135 } | |
| 136 goto invalid; | |
| 137 } | |
| 138 break; | |
| 139 | |
| 140 case sw_argument: | |
| 141 switch (ch) { | |
| 142 | |
| 143 case ' ': | |
| 144 | |
| 145 /* | |
| 146 * the space should be considered as part of the at username | |
| 147 * or password, but not of argument in other commands | |
| 148 */ | |
| 149 | |
| 150 if (s->command == NGX_POP3_USER | |
| 151 || s->command == NGX_POP3_PASS) | |
| 152 { | |
| 153 break; | |
| 154 } | |
| 155 | |
| 156 /* fall through */ | |
| 157 | |
| 158 case CR: | |
| 159 case LF: | |
| 160 arg = ngx_array_push(&s->args); | |
| 161 if (arg == NULL) { | |
| 162 return NGX_ERROR; | |
| 163 } | |
| 164 arg->len = p - s->arg_start; | |
| 165 arg->data = s->arg_start; | |
| 166 s->arg_start = NULL; | |
| 167 | |
| 168 switch (ch) { | |
| 169 case ' ': | |
| 170 state = sw_spaces_before_argument; | |
| 171 break; | |
| 172 case CR: | |
| 173 state = sw_almost_done; | |
| 174 break; | |
| 175 case LF: | |
| 176 goto done; | |
| 177 } | |
| 178 break; | |
| 179 | |
| 180 default: | |
| 181 break; | |
| 182 } | |
| 183 break; | |
| 184 | |
| 185 case sw_almost_done: | |
| 186 switch (ch) { | |
| 187 case LF: | |
| 188 goto done; | |
| 189 default: | |
| 190 goto invalid; | |
| 191 } | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 s->buffer->pos = p; | |
| 196 s->state = state; | |
| 197 | |
| 198 return NGX_AGAIN; | |
| 199 | |
| 200 done: | |
| 201 | |
| 202 s->buffer->pos = p + 1; | |
| 203 s->state = (s->command != NGX_POP3_AUTH) ? sw_start : sw_argument; | |
| 204 | |
| 205 return NGX_OK; | |
| 206 | |
| 207 invalid: | |
| 208 | |
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209 s->state = sw_invalid; |
| 1136 | 210 |
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211 /* skip invalid command till LF */ |
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212 |
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213 for ( /* void */ ; p < s->buffer->last; p++) { |
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214 if (*p == LF) { |
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215 s->state = sw_start; |
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216 s->buffer->pos = p + 1; |
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217 return NGX_MAIL_PARSE_INVALID_COMMAND; |
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218 } |
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219 } |
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220 |
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221 s->buffer->pos = p; |
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222 |
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223 return NGX_AGAIN; |
| 1136 | 224 } |
| 225 | |
| 226 | |
| 1477 | 227 ngx_int_t |
| 228 ngx_mail_imap_parse_command(ngx_mail_session_t *s) | |
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229 { |
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230 u_char ch, *p, *c, *dst, *src, *end; |
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231 ngx_str_t *arg; |
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232 enum { |
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233 sw_start = 0, |
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234 sw_tag, |
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235 sw_invalid, |
| 527 | 236 sw_spaces_before_command, |
| 237 sw_command, | |
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238 sw_spaces_before_argument, |
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239 sw_argument, |
| 543 | 240 sw_backslash, |
| 527 | 241 sw_literal, |
| 543 | 242 sw_no_sync_literal_argument, |
| 527 | 243 sw_start_literal_argument, |
| 244 sw_literal_argument, | |
| 245 sw_end_literal_argument, | |
| 246 sw_almost_done | |
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247 } state; |
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248 |
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249 state = s->state; |
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250 |
| 527 | 251 for (p = s->buffer->pos; p < s->buffer->last; p++) { |
| 252 ch = *p; | |
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253 |
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254 switch (state) { |
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255 |
| 527 | 256 /* IMAP tag */ |
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257 case sw_start: |
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258 s->tag_start = p; |
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259 state = sw_tag; |
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260 |
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261 /* fall through */ |
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262 |
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263 case sw_tag: |
| 527 | 264 switch (ch) { |
| 265 case ' ': | |
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266 s->tag.len = p - s->tag_start + 1; |
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267 s->tag.data = s->tag_start; |
| 527 | 268 state = sw_spaces_before_command; |
| 269 break; | |
| 270 case CR: | |
| 271 case LF: | |
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272 goto invalid; |
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273 default: |
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274 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z') |
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275 && (ch < '0' || ch > '9') && ch != '-' && ch != '.' |
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276 && ch != '_') |
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277 { |
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278 goto invalid; |
|
4b15f1b92100
Mail: stricter checking of IMAP tags.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7841
diff
changeset
|
279 } |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
280 if (p - s->tag_start > 31) { |
|
7842
4b15f1b92100
Mail: stricter checking of IMAP tags.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7841
diff
changeset
|
281 goto invalid; |
|
4b15f1b92100
Mail: stricter checking of IMAP tags.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7841
diff
changeset
|
282 } |
|
4b15f1b92100
Mail: stricter checking of IMAP tags.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7841
diff
changeset
|
283 break; |
| 527 | 284 } |
| 285 break; | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
286 |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
287 case sw_invalid: |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
288 goto invalid; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
289 |
| 527 | 290 case sw_spaces_before_command: |
| 291 switch (ch) { | |
| 292 case ' ': | |
| 293 break; | |
| 294 case CR: | |
| 295 case LF: | |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
296 goto invalid; |
| 527 | 297 default: |
| 298 s->cmd_start = p; | |
| 299 state = sw_command; | |
| 300 break; | |
| 301 } | |
| 302 break; | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
303 |
| 527 | 304 case sw_command: |
| 305 if (ch == ' ' || ch == CR || ch == LF) { | |
| 306 | |
| 307 c = s->cmd_start; | |
| 308 | |
| 309 switch (p - c) { | |
| 310 | |
| 311 case 4: | |
| 312 if ((c[0] == 'N' || c[0] == 'n') | |
| 313 && (c[1] == 'O'|| c[1] == 'o') | |
| 314 && (c[2] == 'O'|| c[2] == 'o') | |
| 315 && (c[3] == 'P'|| c[3] == 'p')) | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
316 { |
| 527 | 317 s->command = NGX_IMAP_NOOP; |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
318 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
319 } else { |
| 527 | 320 goto invalid; |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
321 } |
| 527 | 322 break; |
| 323 | |
| 324 case 5: | |
| 325 if ((c[0] == 'L'|| c[0] == 'l') | |
| 326 && (c[1] == 'O'|| c[1] == 'o') | |
| 327 && (c[2] == 'G'|| c[2] == 'g') | |
| 328 && (c[3] == 'I'|| c[3] == 'i') | |
| 329 && (c[4] == 'N'|| c[4] == 'n')) | |
| 330 { | |
| 331 s->command = NGX_IMAP_LOGIN; | |
| 332 | |
| 333 } else { | |
| 334 goto invalid; | |
| 335 } | |
| 336 break; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
337 |
| 527 | 338 case 6: |
| 339 if ((c[0] == 'L'|| c[0] == 'l') | |
| 340 && (c[1] == 'O'|| c[1] == 'o') | |
| 341 && (c[2] == 'G'|| c[2] == 'g') | |
| 342 && (c[3] == 'O'|| c[3] == 'o') | |
| 343 && (c[4] == 'U'|| c[4] == 'u') | |
| 344 && (c[5] == 'T'|| c[5] == 't')) | |
| 345 { | |
| 346 s->command = NGX_IMAP_LOGOUT; | |
| 347 | |
| 348 } else { | |
| 349 goto invalid; | |
| 350 } | |
| 351 break; | |
| 352 | |
| 1136 | 353 #if (NGX_MAIL_SSL) |
| 583 | 354 case 8: |
| 355 if ((c[0] == 'S'|| c[0] == 's') | |
| 356 && (c[1] == 'T'|| c[1] == 't') | |
| 357 && (c[2] == 'A'|| c[2] == 'a') | |
| 358 && (c[3] == 'R'|| c[3] == 'r') | |
| 359 && (c[4] == 'T'|| c[4] == 't') | |
| 360 && (c[5] == 'T'|| c[5] == 't') | |
| 361 && (c[6] == 'L'|| c[6] == 'l') | |
| 362 && (c[7] == 'S'|| c[7] == 's')) | |
| 363 { | |
| 364 s->command = NGX_IMAP_STARTTLS; | |
| 365 | |
| 366 } else { | |
| 367 goto invalid; | |
| 368 } | |
| 369 break; | |
| 370 #endif | |
| 371 | |
| 527 | 372 case 10: |
| 373 if ((c[0] == 'C'|| c[0] == 'c') | |
| 374 && (c[1] == 'A'|| c[1] == 'a') | |
| 375 && (c[2] == 'P'|| c[2] == 'p') | |
| 376 && (c[3] == 'A'|| c[3] == 'a') | |
| 377 && (c[4] == 'B'|| c[4] == 'b') | |
| 378 && (c[5] == 'I'|| c[5] == 'i') | |
| 379 && (c[6] == 'L'|| c[6] == 'l') | |
| 380 && (c[7] == 'I'|| c[7] == 'i') | |
| 381 && (c[8] == 'T'|| c[8] == 't') | |
| 382 && (c[9] == 'Y'|| c[9] == 'y')) | |
| 383 { | |
| 384 s->command = NGX_IMAP_CAPABILITY; | |
| 385 | |
| 386 } else { | |
| 387 goto invalid; | |
| 388 } | |
| 389 break; | |
| 390 | |
| 1323 | 391 case 12: |
| 392 if ((c[0] == 'A'|| c[0] == 'a') | |
| 393 && (c[1] == 'U'|| c[1] == 'u') | |
| 394 && (c[2] == 'T'|| c[2] == 't') | |
| 395 && (c[3] == 'H'|| c[3] == 'h') | |
| 396 && (c[4] == 'E'|| c[4] == 'e') | |
| 397 && (c[5] == 'N'|| c[5] == 'n') | |
| 398 && (c[6] == 'T'|| c[6] == 't') | |
| 399 && (c[7] == 'I'|| c[7] == 'i') | |
| 400 && (c[8] == 'C'|| c[8] == 'c') | |
| 401 && (c[9] == 'A'|| c[9] == 'a') | |
| 402 && (c[10] == 'T'|| c[10] == 't') | |
| 403 && (c[11] == 'E'|| c[11] == 'e')) | |
| 404 { | |
| 405 s->command = NGX_IMAP_AUTHENTICATE; | |
| 406 | |
| 407 } else { | |
| 408 goto invalid; | |
| 409 } | |
| 410 break; | |
| 411 | |
| 527 | 412 default: |
| 413 goto invalid; | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
414 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
415 |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
416 s->cmd.data = s->cmd_start; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
417 s->cmd.len = p - s->cmd_start; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
418 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
419 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
420 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
421 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
|
422 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
423 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
424 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
|
425 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
426 case LF: |
| 527 | 427 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
428 } |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
429 break; |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
430 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
431 |
| 527 | 432 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { |
| 433 goto invalid; | |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
434 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
435 |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
436 break; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
437 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
438 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
|
439 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
440 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
441 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
442 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
443 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
|
444 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
445 case LF: |
| 527 | 446 goto done; |
| 447 case '"': | |
| 448 if (s->args.nelts <= 2) { | |
| 449 s->quoted = 1; | |
| 450 s->arg_start = p + 1; | |
| 451 state = sw_argument; | |
| 452 break; | |
| 453 } | |
| 454 goto invalid; | |
| 455 case '{': | |
| 456 if (s->args.nelts <= 2) { | |
| 457 state = sw_literal; | |
| 458 break; | |
| 459 } | |
| 460 goto invalid; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
461 default: |
| 527 | 462 if (s->args.nelts <= 2) { |
| 463 s->arg_start = p; | |
| 464 state = sw_argument; | |
| 465 break; | |
| 466 } | |
| 467 goto invalid; | |
| 468 } | |
| 469 break; | |
| 470 | |
| 471 case sw_argument: | |
|
1405
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
472 if (ch == ' ' && s->quoted) { |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
473 break; |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
474 } |
|
fdd064faf26a
escape " ", "%", and %00-%1F in login and password
Igor Sysoev <igor@sysoev.ru>
parents:
1323
diff
changeset
|
475 |
| 527 | 476 switch (ch) { |
| 477 case '"': | |
| 478 if (!s->quoted) { | |
| 479 break; | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
480 } |
| 527 | 481 s->quoted = 0; |
| 482 /* fall through */ | |
| 483 case ' ': | |
| 484 case CR: | |
| 485 case LF: | |
| 486 arg = ngx_array_push(&s->args); | |
| 487 if (arg == NULL) { | |
| 488 return NGX_ERROR; | |
| 489 } | |
| 490 arg->len = p - s->arg_start; | |
| 491 arg->data = s->arg_start; | |
|
7841
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
492 |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
493 if (s->backslash) { |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
494 dst = s->arg_start; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
495 end = p; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
496 |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
497 for (src = dst; src < end; dst++) { |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
498 *dst = *src; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
499 if (*src++ == '\\') { |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
500 *dst = *src++; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
501 } |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
502 } |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
503 |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
504 arg->len = dst - s->arg_start; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
505 s->backslash = 0; |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
506 } |
|
ccdf83bee8c1
Mail: fixed backslash handling in IMAP literals.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7840
diff
changeset
|
507 |
| 527 | 508 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
|
509 |
| 527 | 510 switch (ch) { |
| 511 case '"': | |
| 512 case ' ': | |
| 513 state = sw_spaces_before_argument; | |
| 514 break; | |
| 515 case CR: | |
| 516 state = sw_almost_done; | |
| 517 break; | |
| 518 case LF: | |
| 519 goto done; | |
| 520 } | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
521 break; |
| 543 | 522 case '\\': |
| 523 if (s->quoted) { | |
| 524 s->backslash = 1; | |
| 525 state = sw_backslash; | |
| 526 } | |
| 527 break; | |
| 528 } | |
| 529 break; | |
| 530 | |
| 531 case sw_backslash: | |
| 532 switch (ch) { | |
| 533 case CR: | |
| 534 case LF: | |
| 535 goto invalid; | |
| 536 default: | |
| 537 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
|
538 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
539 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
540 |
| 527 | 541 case sw_literal: |
| 542 if (ch >= '0' && ch <= '9') { | |
| 543 s->literal_len = s->literal_len * 10 + (ch - '0'); | |
| 544 break; | |
| 545 } | |
| 546 if (ch == '}') { | |
| 547 state = sw_start_literal_argument; | |
| 548 break; | |
| 549 } | |
| 543 | 550 if (ch == '+') { |
| 551 state = sw_no_sync_literal_argument; | |
| 552 break; | |
| 553 } | |
| 554 goto invalid; | |
| 555 | |
| 556 case sw_no_sync_literal_argument: | |
| 557 if (ch == '}') { | |
| 558 s->no_sync_literal = 1; | |
| 559 state = sw_start_literal_argument; | |
| 560 break; | |
| 561 } | |
| 527 | 562 goto invalid; |
| 563 | |
| 564 case sw_start_literal_argument: | |
| 565 switch (ch) { | |
| 566 case CR: | |
| 567 break; | |
| 568 case LF: | |
| 569 s->buffer->pos = p + 1; | |
| 570 s->arg_start = p + 1; | |
| 543 | 571 if (s->no_sync_literal == 0) { |
| 572 s->state = sw_literal_argument; | |
| 573 return NGX_IMAP_NEXT; | |
| 574 } | |
| 575 state = sw_literal_argument; | |
| 576 s->no_sync_literal = 0; | |
| 577 break; | |
| 578 default: | |
| 579 goto invalid; | |
| 527 | 580 } |
| 543 | 581 break; |
| 527 | 582 |
| 583 case sw_literal_argument: | |
| 529 | 584 if (s->literal_len && --s->literal_len) { |
| 527 | 585 break; |
| 586 } | |
| 587 | |
| 588 arg = ngx_array_push(&s->args); | |
| 589 if (arg == NULL) { | |
| 590 return NGX_ERROR; | |
| 591 } | |
| 592 arg->len = p + 1 - s->arg_start; | |
| 593 arg->data = s->arg_start; | |
| 594 s->arg_start = NULL; | |
| 595 state = sw_end_literal_argument; | |
| 596 | |
| 597 break; | |
| 598 | |
| 599 case sw_end_literal_argument: | |
| 600 switch (ch) { | |
| 601 case '{': | |
| 602 if (s->args.nelts <= 2) { | |
| 603 state = sw_literal; | |
| 604 break; | |
| 605 } | |
| 606 goto invalid; | |
| 607 case CR: | |
| 608 state = sw_almost_done; | |
| 609 break; | |
| 610 case LF: | |
| 611 goto done; | |
| 612 default: | |
| 529 | 613 state = sw_spaces_before_argument; |
| 614 break; | |
| 527 | 615 } |
| 616 break; | |
| 617 | |
| 618 case sw_almost_done: | |
| 619 switch (ch) { | |
| 620 case LF: | |
| 621 goto done; | |
| 622 default: | |
| 623 goto invalid; | |
| 624 } | |
| 625 } | |
| 626 } | |
| 627 | |
| 628 s->buffer->pos = p; | |
| 629 s->state = state; | |
| 630 | |
| 631 return NGX_AGAIN; | |
| 632 | |
| 633 done: | |
| 634 | |
| 635 s->buffer->pos = p + 1; | |
| 1323 | 636 s->state = (s->command != NGX_IMAP_AUTHENTICATE) ? sw_start : sw_argument; |
| 527 | 637 |
| 638 return NGX_OK; | |
| 639 | |
| 640 invalid: | |
| 641 | |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
642 s->state = sw_invalid; |
| 527 | 643 s->quoted = 0; |
|
7839
3974f4e56a4e
Mail: fixed s->arg_start clearing on invalid IMAP commands.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7838
diff
changeset
|
644 s->backslash = 0; |
| 543 | 645 s->no_sync_literal = 0; |
| 527 | 646 s->literal_len = 0; |
| 647 | |
|
7843
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
648 /* skip invalid command till LF */ |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
649 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
650 for ( /* void */ ; p < s->buffer->last; p++) { |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
651 if (*p == LF) { |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
652 s->state = sw_start; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
653 s->buffer->pos = p + 1; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
654 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
655 /* detect non-synchronizing literals */ |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
656 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
657 if ((size_t) (p - s->buffer->start) > sizeof("{1+}") - 1) { |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
658 p--; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
659 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
660 if (*p == CR) { |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
661 p--; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
662 } |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
663 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
664 if (*p == '}' && *(p - 1) == '+') { |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
665 s->quit = 1; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
666 } |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
667 } |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
668 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
669 return NGX_MAIL_PARSE_INVALID_COMMAND; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
670 } |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
671 } |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
672 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
673 s->buffer->pos = p; |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
674 |
|
b38728495e1a
Mail: IMAP pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7842
diff
changeset
|
675 return NGX_AGAIN; |
| 527 | 676 } |
| 677 | |
| 678 | |
| 1477 | 679 ngx_int_t |
| 680 ngx_mail_smtp_parse_command(ngx_mail_session_t *s) | |
| 527 | 681 { |
| 682 u_char ch, *p, *c, c0, c1, c2, c3; | |
| 683 ngx_str_t *arg; | |
| 684 enum { | |
| 685 sw_start = 0, | |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
686 sw_command, |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
687 sw_invalid, |
| 527 | 688 sw_spaces_before_argument, |
| 689 sw_argument, | |
| 690 sw_almost_done | |
| 691 } state; | |
| 692 | |
| 693 state = s->state; | |
| 694 | |
| 695 for (p = s->buffer->pos; p < s->buffer->last; p++) { | |
| 696 ch = *p; | |
| 697 | |
| 698 switch (state) { | |
| 699 | |
| 1136 | 700 /* SMTP command */ |
| 527 | 701 case sw_start: |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
702 s->cmd_start = p; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
703 state = sw_command; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
704 |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
705 /* fall through */ |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
706 |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
707 case sw_command: |
| 527 | 708 if (ch == ' ' || ch == CR || ch == LF) { |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
709 c = s->cmd_start; |
| 527 | 710 |
| 711 if (p - c == 4) { | |
| 712 | |
| 713 c0 = ngx_toupper(c[0]); | |
| 714 c1 = ngx_toupper(c[1]); | |
| 715 c2 = ngx_toupper(c[2]); | |
| 716 c3 = ngx_toupper(c[3]); | |
| 717 | |
| 1136 | 718 if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'O') |
| 527 | 719 { |
| 1136 | 720 s->command = NGX_SMTP_HELO; |
| 527 | 721 |
| 1136 | 722 } else if (c0 == 'E' && c1 == 'H' && c2 == 'L' && c3 == 'O') |
| 800 | 723 { |
| 1136 | 724 s->command = NGX_SMTP_EHLO; |
| 800 | 725 |
| 527 | 726 } else if (c0 == 'Q' && c1 == 'U' && c2 == 'I' && c3 == 'T') |
| 727 { | |
| 1136 | 728 s->command = NGX_SMTP_QUIT; |
| 527 | 729 |
| 809 | 730 } else if (c0 == 'A' && c1 == 'U' && c2 == 'T' && c3 == 'H') |
| 731 { | |
| 1136 | 732 s->command = NGX_SMTP_AUTH; |
| 809 | 733 |
| 527 | 734 } else if (c0 == 'N' && c1 == 'O' && c2 == 'O' && c3 == 'P') |
| 735 { | |
| 1136 | 736 s->command = NGX_SMTP_NOOP; |
| 737 | |
| 738 } else if (c0 == 'M' && c1 == 'A' && c2 == 'I' && c3 == 'L') | |
| 583 | 739 { |
| 1136 | 740 s->command = NGX_SMTP_MAIL; |
| 741 | |
| 742 } else if (c0 == 'R' && c1 == 'S' && c2 == 'E' && c3 == 'T') | |
| 743 { | |
| 744 s->command = NGX_SMTP_RSET; | |
| 745 | |
| 1322 | 746 } else if (c0 == 'R' && c1 == 'C' && c2 == 'P' && c3 == 'T') |
| 747 { | |
| 748 s->command = NGX_SMTP_RCPT; | |
| 749 | |
| 750 } else if (c0 == 'V' && c1 == 'R' && c2 == 'F' && c3 == 'Y') | |
| 751 { | |
| 752 s->command = NGX_SMTP_VRFY; | |
| 753 | |
| 754 } else if (c0 == 'E' && c1 == 'X' && c2 == 'P' && c3 == 'N') | |
| 755 { | |
| 756 s->command = NGX_SMTP_EXPN; | |
| 757 | |
| 758 } else if (c0 == 'H' && c1 == 'E' && c2 == 'L' && c3 == 'P') | |
| 759 { | |
| 760 s->command = NGX_SMTP_HELP; | |
| 761 | |
| 527 | 762 } else { |
| 763 goto invalid; | |
| 764 } | |
| 1322 | 765 #if (NGX_MAIL_SSL) |
| 766 } else if (p - c == 8) { | |
| 527 | 767 |
| 1322 | 768 if ((c[0] == 'S'|| c[0] == 's') |
| 769 && (c[1] == 'T'|| c[1] == 't') | |
| 770 && (c[2] == 'A'|| c[2] == 'a') | |
| 771 && (c[3] == 'R'|| c[3] == 'r') | |
| 772 && (c[4] == 'T'|| c[4] == 't') | |
| 773 && (c[5] == 'T'|| c[5] == 't') | |
| 774 && (c[6] == 'L'|| c[6] == 'l') | |
| 775 && (c[7] == 'S'|| c[7] == 's')) | |
| 776 { | |
| 777 s->command = NGX_SMTP_STARTTLS; | |
| 778 | |
| 779 } else { | |
| 780 goto invalid; | |
| 781 } | |
| 782 #endif | |
| 527 | 783 } else { |
| 784 goto invalid; | |
| 785 } | |
| 786 | |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
787 s->cmd.data = s->cmd_start; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
788 s->cmd.len = p - s->cmd_start; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
789 |
| 527 | 790 switch (ch) { |
| 791 case ' ': | |
| 792 state = sw_spaces_before_argument; | |
| 793 break; | |
| 794 case CR: | |
| 795 state = sw_almost_done; | |
| 796 break; | |
| 797 case LF: | |
| 798 goto done; | |
| 799 } | |
| 800 break; | |
| 801 } | |
| 802 | |
| 803 if ((ch < 'A' || ch > 'Z') && (ch < 'a' || ch > 'z')) { | |
| 804 goto invalid; | |
| 805 } | |
| 806 | |
| 807 break; | |
| 808 | |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
809 case sw_invalid: |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
810 goto invalid; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
811 |
| 527 | 812 case sw_spaces_before_argument: |
| 813 switch (ch) { | |
| 814 case ' ': | |
| 815 break; | |
| 816 case CR: | |
| 817 state = sw_almost_done; | |
| 818 break; | |
| 819 case LF: | |
| 820 goto done; | |
| 821 default: | |
| 2309 | 822 if (s->args.nelts <= 10) { |
| 527 | 823 state = sw_argument; |
| 824 s->arg_start = p; | |
| 825 break; | |
| 826 } | |
| 827 goto invalid; | |
| 828 } | |
| 829 break; | |
| 830 | |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
831 case sw_argument: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
832 switch (ch) { |
| 800 | 833 case ' ': |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
834 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
835 case LF: |
| 501 | 836 arg = ngx_array_push(&s->args); |
| 837 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
|
838 return NGX_ERROR; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
839 } |
| 527 | 840 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
|
841 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
|
842 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
|
843 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
844 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
845 case ' ': |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
846 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
|
847 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
848 case CR: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
849 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
|
850 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
851 case LF: |
| 527 | 852 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
853 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
854 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
855 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
856 default: |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
857 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
858 } |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
859 break; |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
860 |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
861 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
|
862 switch (ch) { |
|
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
863 case LF: |
| 527 | 864 goto done; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
865 default: |
| 527 | 866 goto invalid; |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
867 } |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
868 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
869 } |
|
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
870 |
|
419
47709bff4468
nginx-0.0.10-2004-09-09-19:40:48 import
Igor Sysoev <igor@sysoev.ru>
parents:
417
diff
changeset
|
871 s->buffer->pos = p; |
| 527 | 872 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
|
873 |
| 527 | 874 return NGX_AGAIN; |
| 875 | |
| 876 done: | |
| 877 | |
| 878 s->buffer->pos = p + 1; | |
| 1136 | 879 s->state = (s->command != NGX_SMTP_AUTH) ? sw_start : sw_argument; |
| 880 | |
| 527 | 881 return NGX_OK; |
| 882 | |
| 883 invalid: | |
| 884 | |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
885 s->state = sw_invalid; |
| 527 | 886 |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
887 /* skip invalid command till LF */ |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
888 |
|
7837
ba8a8299b904
Mail: optimized discarding invalid SMTP commands.
Maxim Dounin <mdounin@mdounin.ru>
parents:
7836
diff
changeset
|
889 for ( /* void */ ; p < s->buffer->last; p++) { |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
890 if (*p == LF) { |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
891 s->state = sw_start; |
|
7836
6a81d96d3733
Mail: fixed handling of invalid SMTP commands split between reads.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6774
diff
changeset
|
892 s->buffer->pos = p + 1; |
|
6a81d96d3733
Mail: fixed handling of invalid SMTP commands split between reads.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6774
diff
changeset
|
893 return NGX_MAIL_PARSE_INVALID_COMMAND; |
|
5398
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
894 } |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
895 } |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
896 |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
897 s->buffer->pos = p; |
|
04e43d03e153
Mail: smtp pipelining support.
Maxim Dounin <mdounin@mdounin.ru>
parents:
5246
diff
changeset
|
898 |
|
7836
6a81d96d3733
Mail: fixed handling of invalid SMTP commands split between reads.
Maxim Dounin <mdounin@mdounin.ru>
parents:
6774
diff
changeset
|
899 return NGX_AGAIN; |
|
417
0526206251f6
nginx-0.0.10-2004-09-07-19:29:22 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
900 } |
| 1479 | 901 |
| 902 | |
| 903 ngx_int_t | |
| 904 ngx_mail_auth_parse(ngx_mail_session_t *s, ngx_connection_t *c) | |
| 905 { | |
| 906 ngx_str_t *arg; | |
| 907 | |
| 908 #if (NGX_MAIL_SSL) | |
| 909 if (ngx_mail_starttls_only(s, c)) { | |
| 910 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 911 } | |
| 912 #endif | |
| 913 | |
|
5246
b6562f98bfd8
Mail: fixed possible uninitialized memory access.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4759
diff
changeset
|
914 if (s->args.nelts == 0) { |
|
b6562f98bfd8
Mail: fixed possible uninitialized memory access.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4759
diff
changeset
|
915 return NGX_MAIL_PARSE_INVALID_COMMAND; |
|
b6562f98bfd8
Mail: fixed possible uninitialized memory access.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4759
diff
changeset
|
916 } |
|
b6562f98bfd8
Mail: fixed possible uninitialized memory access.
Maxim Dounin <mdounin@mdounin.ru>
parents:
4759
diff
changeset
|
917 |
| 1479 | 918 arg = s->args.elts; |
| 919 | |
| 920 if (arg[0].len == 5) { | |
| 921 | |
| 922 if (ngx_strncasecmp(arg[0].data, (u_char *) "LOGIN", 5) == 0) { | |
| 923 | |
| 924 if (s->args.nelts == 1) { | |
| 925 return NGX_MAIL_AUTH_LOGIN; | |
| 926 } | |
| 927 | |
|
2495
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
928 if (s->args.nelts == 2) { |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
929 return NGX_MAIL_AUTH_LOGIN_USERNAME; |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
930 } |
|
a59b26eee816
compatibility with Microsoft's
Igor Sysoev <igor@sysoev.ru>
parents:
2309
diff
changeset
|
931 |
| 1479 | 932 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 933 } | |
| 934 | |
| 935 if (ngx_strncasecmp(arg[0].data, (u_char *) "PLAIN", 5) == 0) { | |
| 936 | |
| 937 if (s->args.nelts == 1) { | |
| 938 return NGX_MAIL_AUTH_PLAIN; | |
| 939 } | |
| 940 | |
| 941 if (s->args.nelts == 2) { | |
| 942 return ngx_mail_auth_plain(s, c, 1); | |
| 943 } | |
| 944 } | |
| 945 | |
| 946 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 947 } | |
| 948 | |
| 949 if (arg[0].len == 8) { | |
| 950 | |
|
6774
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
951 if (ngx_strncasecmp(arg[0].data, (u_char *) "CRAM-MD5", 8) == 0) { |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
952 |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
953 if (s->args.nelts != 1) { |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
954 return NGX_MAIL_PARSE_INVALID_COMMAND; |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
955 } |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
956 |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
957 return NGX_MAIL_AUTH_CRAM_MD5; |
| 1479 | 958 } |
| 959 | |
|
6774
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
960 if (ngx_strncasecmp(arg[0].data, (u_char *) "EXTERNAL", 8) == 0) { |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
961 |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
962 if (s->args.nelts == 1) { |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
963 return NGX_MAIL_AUTH_EXTERNAL; |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
964 } |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
965 |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
966 if (s->args.nelts == 2) { |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
967 return ngx_mail_auth_external(s, c, 1); |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
968 } |
| 1479 | 969 } |
|
6774
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
970 |
|
bcb107bb89cd
Mail: support SASL EXTERNAL (RFC 4422).
Rob N ★ <robn@fastmail.com>
parents:
5398
diff
changeset
|
971 return NGX_MAIL_PARSE_INVALID_COMMAND; |
| 1479 | 972 } |
| 973 | |
| 974 return NGX_MAIL_PARSE_INVALID_COMMAND; | |
| 975 } |