| 1 | /* $Cambridge: exim/src/src/parse.c,v 1.5 2005/06/27 14:29:43 ph10 Exp $ */ |
| 2 | |
| 3 | /************************************************* |
| 4 | * Exim - an Internet mail transport agent * |
| 5 | *************************************************/ |
| 6 | |
| 7 | /* Copyright (c) University of Cambridge 1995 - 2005 */ |
| 8 | /* See the file NOTICE for conditions of use and distribution. */ |
| 9 | |
| 10 | /* Functions for parsing addresses */ |
| 11 | |
| 12 | |
| 13 | #include "exim.h" |
| 14 | |
| 15 | |
| 16 | static uschar *last_comment_position; |
| 17 | |
| 18 | |
| 19 | |
| 20 | /* In stand-alone mode, provide a replacement for deliver_make_addr() |
| 21 | and rewrite_address[_qualify]() so as to avoid having to drag in too much |
| 22 | redundant apparatus. */ |
| 23 | |
| 24 | #ifdef STAND_ALONE |
| 25 | |
| 26 | address_item *deliver_make_addr(uschar *address, BOOL copy) |
| 27 | { |
| 28 | address_item *addr = store_get(sizeof(address_item)); |
| 29 | addr->next = NULL; |
| 30 | addr->parent = NULL; |
| 31 | addr->address = address; |
| 32 | return addr; |
| 33 | } |
| 34 | |
| 35 | uschar *rewrite_address(uschar *recipient, BOOL dummy1, BOOL dummy2, rewrite_rule |
| 36 | *dummy3, int dummy4) |
| 37 | { |
| 38 | return recipient; |
| 39 | } |
| 40 | |
| 41 | uschar *rewrite_address_qualify(uschar *recipient, BOOL dummy1) |
| 42 | { |
| 43 | return recipient; |
| 44 | } |
| 45 | |
| 46 | #endif |
| 47 | |
| 48 | |
| 49 | |
| 50 | |
| 51 | /************************************************* |
| 52 | * Find the end of an address * |
| 53 | *************************************************/ |
| 54 | |
| 55 | /* Scan over a string looking for the termination of an address at a comma, |
| 56 | or end of the string. It's the source-routed addresses which cause much pain |
| 57 | here. Although Exim ignores source routes, it must recognize such addresses, so |
| 58 | we cannot get rid of this logic. |
| 59 | |
| 60 | Argument: |
| 61 | s pointer to the start of an address |
| 62 | nl_ends if TRUE, '\n' terminates an address |
| 63 | |
| 64 | Returns: pointer past the end of the address |
| 65 | (i.e. points to null or comma) |
| 66 | */ |
| 67 | |
| 68 | uschar * |
| 69 | parse_find_address_end(uschar *s, BOOL nl_ends) |
| 70 | { |
| 71 | BOOL source_routing = *s == '@'; |
| 72 | int no_term = source_routing? 1 : 0; |
| 73 | |
| 74 | while (*s != 0 && (*s != ',' || no_term > 0) && (*s != '\n' || !nl_ends)) |
| 75 | { |
| 76 | /* Skip single quoted characters. Strictly these should not occur outside |
| 77 | quoted strings in RFC 822 addresses, but they can in RFC 821 addresses. Pity |
| 78 | about the lack of consistency, isn't it? */ |
| 79 | |
| 80 | if (*s == '\\' && s[1] != 0) s += 2; |
| 81 | |
| 82 | /* Skip quoted items that are not inside brackets. Note that |
| 83 | quoted pairs are allowed inside quoted strings. */ |
| 84 | |
| 85 | else if (*s == '\"') |
| 86 | { |
| 87 | while (*(++s) != 0 && (*s != '\n' || !nl_ends)) |
| 88 | { |
| 89 | if (*s == '\\' && s[1] != 0) s++; |
| 90 | else if (*s == '\"') { s++; break; } |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | /* Skip comments, which may include nested brackets, but quotes |
| 95 | are not recognized inside comments, though quoted pairs are. */ |
| 96 | |
| 97 | else if (*s == '(') |
| 98 | { |
| 99 | int level = 1; |
| 100 | while (*(++s) != 0 && (*s != '\n' || !nl_ends)) |
| 101 | { |
| 102 | if (*s == '\\' && s[1] != 0) s++; |
| 103 | else if (*s == '(') level++; |
| 104 | else if (*s == ')' && --level <= 0) { s++; break; } |
| 105 | } |
| 106 | } |
| 107 | |
| 108 | /* Non-special character; just advance. Passing the colon in a source |
| 109 | routed address means that any subsequent comma or colon may terminate unless |
| 110 | inside angle brackets. */ |
| 111 | |
| 112 | else |
| 113 | { |
| 114 | if (*s == '<') |
| 115 | { |
| 116 | source_routing = s[1] == '@'; |
| 117 | no_term = source_routing? 2 : 1; |
| 118 | } |
| 119 | else if (*s == '>') no_term--; |
| 120 | else if (source_routing && *s == ':') no_term--; |
| 121 | s++; |
| 122 | } |
| 123 | } |
| 124 | |
| 125 | return s; |
| 126 | } |
| 127 | |
| 128 | |
| 129 | |
| 130 | /************************************************* |
| 131 | * Find last @ in an address * |
| 132 | *************************************************/ |
| 133 | |
| 134 | /* This function is used when we have something that may not qualified. If we |
| 135 | know it's qualified, searching for the rightmost '@' is sufficient. Here we |
| 136 | have to be a bit more clever than just a plain search, in order to handle |
| 137 | unqualified local parts like "thing@thong" correctly. Since quotes may not |
| 138 | legally be part of a domain name, we can give up on hitting the first quote |
| 139 | when searching from the right. Now that the parsing also permits the RFC 821 |
| 140 | form of address, where quoted-pairs are allowed in unquoted local parts, we |
| 141 | must take care to handle that too. |
| 142 | |
| 143 | Argument: pointer to an address, possibly unqualified |
| 144 | Returns: pointer to the last @ in an address, or NULL if none |
| 145 | */ |
| 146 | |
| 147 | uschar * |
| 148 | parse_find_at(uschar *s) |
| 149 | { |
| 150 | uschar *t = s + Ustrlen(s); |
| 151 | while (--t >= s) |
| 152 | { |
| 153 | if (*t == '@') |
| 154 | { |
| 155 | int backslash_count = 0; |
| 156 | uschar *tt = t - 1; |
| 157 | while (tt > s && *tt-- == '\\') backslash_count++; |
| 158 | if ((backslash_count & 1) == 0) return t; |
| 159 | } |
| 160 | else if (*t == '\"') return NULL; |
| 161 | } |
| 162 | return NULL; |
| 163 | } |
| 164 | |
| 165 | |
| 166 | |
| 167 | |
| 168 | /*************************************************************************** |
| 169 | * In all the functions below that read a particular object type from * |
| 170 | * the input, return the new value of the pointer s (the first argument), * |
| 171 | * and put the object into the store pointed to by t (the second argument), * |
| 172 | * adding a terminating zero. If no object is found, t will point to zero * |
| 173 | * on return. * |
| 174 | ***************************************************************************/ |
| 175 | |
| 176 | |
| 177 | /************************************************* |
| 178 | * Skip white space and comment * |
| 179 | *************************************************/ |
| 180 | |
| 181 | /* Algorithm: |
| 182 | (1) Skip spaces. |
| 183 | (2) If uschar not '(', return. |
| 184 | (3) Skip till matching ')', not counting any characters |
| 185 | escaped with '\'. |
| 186 | (4) Move past ')' and goto (1). |
| 187 | |
| 188 | The start of the last potential comment position is remembered to |
| 189 | make it possible to ignore comments at the end of compound items. |
| 190 | |
| 191 | Argument: current character pointer |
| 192 | Regurns: new character pointer |
| 193 | */ |
| 194 | |
| 195 | static uschar * |
| 196 | skip_comment(uschar *s) |
| 197 | { |
| 198 | last_comment_position = s; |
| 199 | while (*s) |
| 200 | { |
| 201 | int c, level; |
| 202 | while (isspace(*s)) s++; |
| 203 | if (*s != '(') break; |
| 204 | level = 1; |
| 205 | while((c = *(++s)) != 0) |
| 206 | { |
| 207 | if (c == '(') level++; |
| 208 | else if (c == ')') { if (--level <= 0) { s++; break; } } |
| 209 | else if (c == '\\' && s[1] != 0) s++; |
| 210 | } |
| 211 | } |
| 212 | return s; |
| 213 | } |
| 214 | |
| 215 | |
| 216 | |
| 217 | /************************************************* |
| 218 | * Read a domain * |
| 219 | *************************************************/ |
| 220 | |
| 221 | /* A domain is a sequence of subdomains, separated by dots. See comments below |
| 222 | for detailed syntax of the subdomains. |
| 223 | |
| 224 | If allow_domain_literals is TRUE, a "domain" may also be an IP address enclosed |
| 225 | in []. Make sure the output is set to the null string if there is a syntax |
| 226 | error as well as if there is no domain at all. |
| 227 | |
| 228 | Arguments: |
| 229 | s current character pointer |
| 230 | t where to put the domain |
| 231 | errorptr put error message here on failure (*t will be 0 on exit) |
| 232 | |
| 233 | Returns: new character pointer |
| 234 | */ |
| 235 | |
| 236 | static uschar * |
| 237 | read_domain(uschar *s, uschar *t, uschar **errorptr) |
| 238 | { |
| 239 | uschar *tt = t; |
| 240 | s = skip_comment(s); |
| 241 | |
| 242 | /* Handle domain literals if permitted. An RFC 822 domain literal may contain |
| 243 | any character except [ ] \, including linear white space, and may contain |
| 244 | quoted characters. However, RFC 821 restricts literals to being dot-separated |
| 245 | 3-digit numbers, and we make the obvious extension for IPv6. Go for a sequence |
| 246 | of digits and dots (hex digits and colons for IPv6) here; later this will be |
| 247 | checked for being a syntactically valid IP address if it ever gets to a router. |
| 248 | |
| 249 | If IPv6 is supported, allow both the formal form, with IPV6: at the start, and |
| 250 | the informal form without it, and accept IPV4: as well, 'cause someone will use |
| 251 | it sooner or later. */ |
| 252 | |
| 253 | if (*s == '[') |
| 254 | { |
| 255 | *t++ = *s++; |
| 256 | |
| 257 | #if HAVE_IPV6 |
| 258 | if (strncmpic(s, US"IPv6:", 5) == 0 || strncmpic(s, US"IPv4:", 5) == 0) |
| 259 | { |
| 260 | memcpy(t, s, 5); |
| 261 | t += 5; |
| 262 | s += 5; |
| 263 | } |
| 264 | while (*s == '.' || *s == ':' || isxdigit(*s)) *t++ = *s++; |
| 265 | |
| 266 | #else |
| 267 | while (*s == '.' || isdigit(*s)) *t++ = *s++; |
| 268 | #endif |
| 269 | |
| 270 | if (*s == ']') *t++ = *s++; else |
| 271 | { |
| 272 | *errorptr = US"malformed domain literal"; |
| 273 | *tt = 0; |
| 274 | } |
| 275 | |
| 276 | if (!allow_domain_literals) |
| 277 | { |
| 278 | *errorptr = US"domain literals not allowed"; |
| 279 | *tt = 0; |
| 280 | } |
| 281 | *t = 0; |
| 282 | return skip_comment(s); |
| 283 | } |
| 284 | |
| 285 | /* Handle a proper domain, which is a sequence of dot-separated atoms. Remove |
| 286 | trailing dots if strip_trailing_dot is set. A subdomain is an atom. |
| 287 | |
| 288 | An atom is a sequence of any characters except specials, space, and controls. |
| 289 | The specials are ( ) < > @ , ; : \ " . [ and ]. This is the rule for RFC 822 |
| 290 | and its successor (RFC 2822). However, RFC 821 and its successor (RFC 2821) is |
| 291 | tighter, allowing only letters, digits, and hyphens, not starting with a |
| 292 | hyphen. |
| 293 | |
| 294 | There used to be a global flag that got set when checking addresses that came |
| 295 | in over SMTP and which should therefore should be checked according to the |
| 296 | stricter rule. However, it seems silly to make the distinction, because I don't |
| 297 | suppose anybody ever uses local domains that are 822-compliant and not |
| 298 | 821-compliant. Furthermore, Exim now has additional data on the spool file line |
| 299 | after an address (after "one_time" processing), and it makes use of a # |
| 300 | character to delimit it. When I wrote that code, I forgot about this 822-domain |
| 301 | stuff, and assumed # could never appear in a domain. |
| 302 | |
| 303 | So the old code is now cut out for Release 4.11 onwards, on 09-Aug-02. In a few |
| 304 | years, when we are sure this isn't actually causing trouble, throw it away. |
| 305 | |
| 306 | March 2003: the story continues: There is a camp that is arguing for the use of |
| 307 | UTF-8 in domain names as the way to internationalization, and other MTAs |
| 308 | support this. Therefore, we now have a flag that permits the use of characters |
| 309 | with values greater than 127, encoded in UTF-8, in subdomains, so that Exim can |
| 310 | be used experimentally in this way. */ |
| 311 | |
| 312 | for (;;) |
| 313 | { |
| 314 | uschar *tsave = t; |
| 315 | |
| 316 | /********************* |
| 317 | if (rfc821_domains) |
| 318 | { |
| 319 | if (*s != '-') while (isalnum(*s) || *s == '-') *t++ = *s++; |
| 320 | } |
| 321 | else |
| 322 | while (!mac_iscntrl_or_special(*s)) *t++ = *s++; |
| 323 | *********************/ |
| 324 | |
| 325 | if (*s != '-') |
| 326 | { |
| 327 | /* Only letters, digits, and hyphens */ |
| 328 | |
| 329 | if (!allow_utf8_domains) |
| 330 | { |
| 331 | while (isalnum(*s) || *s == '-') *t++ = *s++; |
| 332 | } |
| 333 | |
| 334 | /* Permit legal UTF-8 characters to be included */ |
| 335 | |
| 336 | else for(;;) |
| 337 | { |
| 338 | int i, d; |
| 339 | if (isalnum(*s) || *s == '-') /* legal ascii characters */ |
| 340 | { |
| 341 | *t++ = *s++; |
| 342 | continue; |
| 343 | } |
| 344 | if ((*s & 0xc0) != 0xc0) break; /* not start of UTF-8 character */ |
| 345 | d = *s << 2; |
| 346 | for (i = 1; i < 6; i++) /* i is the number of additional bytes */ |
| 347 | { |
| 348 | if ((d & 0x80) == 0) break; |
| 349 | d <<= 1; |
| 350 | } |
| 351 | if (i == 6) goto BAD_UTF8; /* invalid UTF-8 */ |
| 352 | *t++ = *s++; /* leading UTF-8 byte */ |
| 353 | while (i-- > 0) /* copy and check remainder */ |
| 354 | { |
| 355 | if ((*s & 0xc0) != 0x80) |
| 356 | { |
| 357 | BAD_UTF8: |
| 358 | *errorptr = US"invalid UTF-8 byte sequence"; |
| 359 | *tt = 0; |
| 360 | return s; |
| 361 | } |
| 362 | *t++ = *s++; |
| 363 | } |
| 364 | } /* End of loop for UTF-8 character */ |
| 365 | } /* End of subdomain */ |
| 366 | |
| 367 | s = skip_comment(s); |
| 368 | *t = 0; |
| 369 | |
| 370 | if (t == tsave) /* empty component */ |
| 371 | { |
| 372 | if (strip_trailing_dot && t > tt && *s != '.') t[-1] = 0; else |
| 373 | { |
| 374 | *errorptr = US"domain missing or malformed"; |
| 375 | *tt = 0; |
| 376 | } |
| 377 | return s; |
| 378 | } |
| 379 | |
| 380 | if (*s != '.') break; |
| 381 | *t++ = *s++; |
| 382 | s = skip_comment(s); |
| 383 | } |
| 384 | |
| 385 | return s; |
| 386 | } |
| 387 | |
| 388 | |
| 389 | |
| 390 | /************************************************* |
| 391 | * Read a local-part * |
| 392 | *************************************************/ |
| 393 | |
| 394 | /* A local-part is a sequence of words, separated by periods. A null word |
| 395 | between dots is not strictly allowed but apparently many mailers permit it, |
| 396 | so, sigh, better be compatible. Even accept a trailing dot... |
| 397 | |
| 398 | A <word> is either a quoted string, or an <atom>, which is a sequence |
| 399 | of any characters except specials, space, and controls. The specials are |
| 400 | ( ) < > @ , ; : \ " . [ and ]. In RFC 822, a single quoted character, (a |
| 401 | quoted-pair) is not allowed in a word. However, in RFC 821, it is permitted in |
| 402 | the local part of an address. Rather than have separate parsing functions for |
| 403 | the different cases, take the liberal attitude always. At least one MUA is |
| 404 | happy to recognize this case; I don't know how many other programs do. |
| 405 | |
| 406 | Arguments: |
| 407 | s current character pointer |
| 408 | t where to put the local part |
| 409 | error where to point error text |
| 410 | allow_null TRUE if an empty local part is not an error |
| 411 | |
| 412 | Returns: new character pointer |
| 413 | */ |
| 414 | |
| 415 | static uschar * |
| 416 | read_local_part(uschar *s, uschar *t, uschar **error, BOOL allow_null) |
| 417 | { |
| 418 | uschar *tt = t; |
| 419 | *error = NULL; |
| 420 | for (;;) |
| 421 | { |
| 422 | int c; |
| 423 | uschar *tsave = t; |
| 424 | s = skip_comment(s); |
| 425 | |
| 426 | /* Handle a quoted string */ |
| 427 | |
| 428 | if (*s == '\"') |
| 429 | { |
| 430 | *t++ = '\"'; |
| 431 | while ((c = *(++s)) != 0 && c != '\"') |
| 432 | { |
| 433 | *t++ = c; |
| 434 | if (c == '\\' && s[1] != 0) *t++ = *(++s); |
| 435 | } |
| 436 | if (c == '\"') |
| 437 | { |
| 438 | s++; |
| 439 | *t++ = '\"'; |
| 440 | } |
| 441 | else |
| 442 | { |
| 443 | *error = US"unmatched doublequote in local part"; |
| 444 | return s; |
| 445 | } |
| 446 | } |
| 447 | |
| 448 | /* Handle an atom, but allow quoted pairs within it. */ |
| 449 | |
| 450 | else while (!mac_iscntrl_or_special(*s) || *s == '\\') |
| 451 | { |
| 452 | c = *t++ = *s++; |
| 453 | if (c == '\\' && *s != 0) *t++ = *s++; |
| 454 | } |
| 455 | |
| 456 | /* Terminate the word and skip subsequent comment */ |
| 457 | |
| 458 | *t = 0; |
| 459 | s = skip_comment(s); |
| 460 | |
| 461 | /* If we have read a null component at this point, give an error unless it is |
| 462 | terminated by a dot - an extension to RFC 822 - or if it is the first |
| 463 | component of the local part and an empty local part is permitted, in which |
| 464 | case just return normally. */ |
| 465 | |
| 466 | if (t == tsave && *s != '.') |
| 467 | { |
| 468 | if (t == tt && !allow_null) |
| 469 | *error = US"missing or malformed local part"; |
| 470 | return s; |
| 471 | } |
| 472 | |
| 473 | /* Anything other than a dot terminates the local part. Treat multiple dots |
| 474 | as a single dot, as this seems to be a common extension. */ |
| 475 | |
| 476 | if (*s != '.') break; |
| 477 | do { *t++ = *s++; } while (*s == '.'); |
| 478 | } |
| 479 | |
| 480 | return s; |
| 481 | } |
| 482 | |
| 483 | |
| 484 | /************************************************* |
| 485 | * Read route part of route-addr * |
| 486 | *************************************************/ |
| 487 | |
| 488 | /* The pointer is at the initial "@" on entry. Return it following the |
| 489 | terminating colon. Exim no longer supports the use of source routes, but it is |
| 490 | required to accept the syntax. |
| 491 | |
| 492 | Arguments: |
| 493 | s current character pointer |
| 494 | t where to put the route |
| 495 | errorptr where to put an error message |
| 496 | |
| 497 | Returns: new character pointer |
| 498 | */ |
| 499 | |
| 500 | static uschar * |
| 501 | read_route(uschar *s, uschar *t, uschar **errorptr) |
| 502 | { |
| 503 | BOOL commas = FALSE; |
| 504 | *errorptr = NULL; |
| 505 | |
| 506 | while (*s == '@') |
| 507 | { |
| 508 | *t++ = '@'; |
| 509 | s = read_domain(s+1, t, errorptr); |
| 510 | if (*t == 0) return s; |
| 511 | t += Ustrlen((const uschar *)t); |
| 512 | if (*s != ',') break; |
| 513 | *t++ = *s++; |
| 514 | commas = TRUE; |
| 515 | s = skip_comment(s); |
| 516 | } |
| 517 | |
| 518 | if (*s == ':') *t++ = *s++; |
| 519 | |
| 520 | /* If there is no colon, and there were no commas, the most likely error |
| 521 | is in fact a missing local part in the address rather than a missing colon |
| 522 | after the route. */ |
| 523 | |
| 524 | else *errorptr = commas? |
| 525 | US"colon expected after route list" : |
| 526 | US"no local part"; |
| 527 | |
| 528 | /* Terminate the route and return */ |
| 529 | |
| 530 | *t = 0; |
| 531 | return skip_comment(s); |
| 532 | } |
| 533 | |
| 534 | |
| 535 | |
| 536 | /************************************************* |
| 537 | * Read addr-spec * |
| 538 | *************************************************/ |
| 539 | |
| 540 | /* Addr-spec is local-part@domain. We make the domain optional - |
| 541 | the expected terminator for the whole thing is passed to check this. |
| 542 | This function is called only when we know we have a route-addr. |
| 543 | |
| 544 | Arguments: |
| 545 | s current character pointer |
| 546 | t where to put the addr-spec |
| 547 | term expected terminator (0 or >) |
| 548 | errorptr where to put an error message |
| 549 | domainptr set to point to the start of the domain |
| 550 | |
| 551 | Returns: new character pointer |
| 552 | */ |
| 553 | |
| 554 | static uschar * |
| 555 | read_addr_spec(uschar *s, uschar *t, int term, uschar **errorptr, |
| 556 | uschar **domainptr) |
| 557 | { |
| 558 | s = read_local_part(s, t, errorptr, FALSE); |
| 559 | if (*errorptr == NULL) |
| 560 | { |
| 561 | if (*s != term) |
| 562 | { |
| 563 | if (*s != '@') |
| 564 | *errorptr = string_sprintf("\"@\" or \".\" expected after \"%s\"", t); |
| 565 | else |
| 566 | { |
| 567 | t += Ustrlen((const uschar *)t); |
| 568 | *t++ = *s++; |
| 569 | *domainptr = t; |
| 570 | s = read_domain(s, t, errorptr); |
| 571 | } |
| 572 | } |
| 573 | } |
| 574 | return s; |
| 575 | } |
| 576 | |
| 577 | |
| 578 | |
| 579 | /************************************************* |
| 580 | * Extract operative address * |
| 581 | *************************************************/ |
| 582 | |
| 583 | /* This function extracts an operative address from a full RFC822 mailbox and |
| 584 | returns it in a piece of dynamic store. We take the easy way and get a piece |
| 585 | of store the same size as the input, and then copy into it whatever is |
| 586 | necessary. If we cannot find a valid address (syntax error), return NULL, and |
| 587 | point the error pointer to the reason. The arguments "start" and "end" are used |
| 588 | to return the offsets of the first and one past the last characters in the |
| 589 | original mailbox of the address that has been extracted, to aid in re-writing. |
| 590 | The argument "domain" is set to point to the first character after "@" in the |
| 591 | final part of the returned address, or zero if there is no @. |
| 592 | |
| 593 | Exim no longer supports the use of source routed addresses (those of the form |
| 594 | @domain,...:route_addr). It recognizes the syntax, but collapses such addresses |
| 595 | down to their final components. Formerly, collapse_source_routes had to be set |
| 596 | to achieve this effect. RFC 1123 allows collapsing with MAY, while the revision |
| 597 | of RFC 821 had increased this to SHOULD, so I've gone for it, because it makes |
| 598 | a lot of code elsewhere in Exim much simpler. |
| 599 | |
| 600 | There are some special fudges here for handling RFC 822 group address notation |
| 601 | which may appear in certain headers. If the flag parse_allow_group is set |
| 602 | TRUE and parse_found_group is FALSE when this function is called, an address |
| 603 | which is the start of a group (i.e. preceded by a phrase and a colon) is |
| 604 | recognized; the phrase is ignored and the flag parse_found_group is set. If |
| 605 | this flag is TRUE at the end of an address, then if an extraneous semicolon is |
| 606 | found, it is ignored and the flag is cleared. This logic is used only when |
| 607 | scanning through addresses in headers, either to fulfil the -t option or for |
| 608 | rewriting or checking header syntax. |
| 609 | |
| 610 | Arguments: |
| 611 | mailbox points to the RFC822 mailbox |
| 612 | errorptr where to point an error message |
| 613 | start set to start offset in mailbox |
| 614 | end set to end offset in mailbox |
| 615 | domain set to domain offset in result, or 0 if no domain present |
| 616 | allow_null allow <> if TRUE |
| 617 | |
| 618 | Returns: points to the extracted address, or NULL on error |
| 619 | */ |
| 620 | |
| 621 | #define FAILED(s) { *errorptr = s; goto PARSE_FAILED; } |
| 622 | |
| 623 | uschar * |
| 624 | parse_extract_address(uschar *mailbox, uschar **errorptr, int *start, int *end, |
| 625 | int *domain, BOOL allow_null) |
| 626 | { |
| 627 | uschar *yield = store_get(Ustrlen(mailbox) + 1); |
| 628 | uschar *startptr, *endptr; |
| 629 | uschar *s = (uschar *)mailbox; |
| 630 | uschar *t = (uschar *)yield; |
| 631 | |
| 632 | *domain = 0; |
| 633 | |
| 634 | /* At the start of the string we expect either an addr-spec or a phrase |
| 635 | preceding a <route-addr>. If groups are allowed, we might also find a phrase |
| 636 | preceding a colon and an address. If we find an initial word followed by |
| 637 | a dot, strict interpretation of the RFC would cause it to be taken |
| 638 | as the start of an addr-spec. However, many mailers break the rules |
| 639 | and use addresses of the form "a.n.other <ano@somewhere>" and so we |
| 640 | allow this case. */ |
| 641 | |
| 642 | RESTART: /* Come back here after passing a group name */ |
| 643 | |
| 644 | s = skip_comment(s); |
| 645 | startptr = s; /* In case addr-spec */ |
| 646 | s = read_local_part(s, t, errorptr, TRUE); /* Dot separated words */ |
| 647 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 648 | |
| 649 | /* If the terminator is neither < nor @ then the format of the address |
| 650 | must either be a bare local-part (we are now at the end), or a phrase |
| 651 | followed by a route-addr (more words must follow). */ |
| 652 | |
| 653 | if (*s != '@' && *s != '<') |
| 654 | { |
| 655 | if (*s == 0 || *s == ';') |
| 656 | { |
| 657 | if (*t == 0) FAILED(US"empty address"); |
| 658 | endptr = last_comment_position; |
| 659 | goto PARSE_SUCCEEDED; /* Bare local part */ |
| 660 | } |
| 661 | |
| 662 | /* Expect phrase route-addr, or phrase : if groups permitted, but allow |
| 663 | dots in the phrase; complete the loop only when '<' or ':' is encountered - |
| 664 | end of string will produce a null local_part and therefore fail. We don't |
| 665 | need to keep updating t, as the phrase isn't to be kept. */ |
| 666 | |
| 667 | while (*s != '<' && (!parse_allow_group || *s != ':')) |
| 668 | { |
| 669 | s = read_local_part(s, t, errorptr, FALSE); |
| 670 | if (*errorptr != NULL) |
| 671 | { |
| 672 | *errorptr = string_sprintf("%s (expected word or \"<\")", *errorptr); |
| 673 | goto PARSE_FAILED; |
| 674 | } |
| 675 | } |
| 676 | |
| 677 | if (*s == ':') |
| 678 | { |
| 679 | parse_found_group = TRUE; |
| 680 | parse_allow_group = FALSE; |
| 681 | s++; |
| 682 | goto RESTART; |
| 683 | } |
| 684 | |
| 685 | /* Assert *s == '<' */ |
| 686 | } |
| 687 | |
| 688 | /* At this point the next character is either '@' or '<'. If it is '@', only a |
| 689 | single local-part has previously been read. An angle bracket signifies the |
| 690 | start of an <addr-spec>. Throw away anything we have saved so far before |
| 691 | processing it. Note that this is "if" rather than "else if" because it's also |
| 692 | used after reading a preceding phrase. |
| 693 | |
| 694 | There are a lot of broken sendmails out there that put additional pairs of <> |
| 695 | round <route-addr>s. If strip_excess_angle_brackets is set, allow any number of |
| 696 | them, as long as they match. */ |
| 697 | |
| 698 | if (*s == '<') |
| 699 | { |
| 700 | uschar *domainptr = yield; |
| 701 | BOOL source_routed = FALSE; |
| 702 | int bracket_count = 1; |
| 703 | |
| 704 | s++; |
| 705 | if (strip_excess_angle_brackets) |
| 706 | while (*s == '<') { bracket_count++; s++; } |
| 707 | |
| 708 | t = yield; |
| 709 | startptr = s; |
| 710 | s = skip_comment(s); |
| 711 | |
| 712 | /* Read an optional series of routes, each of which is a domain. They |
| 713 | are separated by commas and terminated by a colon. However, we totally ignore |
| 714 | such routes (RFC 1123 says we MAY, and the revision of RFC 821 says we |
| 715 | SHOULD). */ |
| 716 | |
| 717 | if (*s == '@') |
| 718 | { |
| 719 | s = read_route(s, t, errorptr); |
| 720 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 721 | *t = 0; /* Ensure route is ignored - probably overkill */ |
| 722 | source_routed = TRUE; |
| 723 | } |
| 724 | |
| 725 | /* Now an addr-spec, terminated by '>'. If there is no preceding route, |
| 726 | we must allow an empty addr-spec if allow_null is TRUE, to permit the |
| 727 | address "<>" in some circumstances. A source-routed address MUST have |
| 728 | a domain in the final part. */ |
| 729 | |
| 730 | if (allow_null && !source_routed && *s == '>') |
| 731 | { |
| 732 | *t = 0; |
| 733 | *errorptr = NULL; |
| 734 | } |
| 735 | else |
| 736 | { |
| 737 | s = read_addr_spec(s, t, '>', errorptr, &domainptr); |
| 738 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 739 | *domain = domainptr - yield; |
| 740 | if (source_routed && *domain == 0) |
| 741 | FAILED(US"domain missing in source-routed address"); |
| 742 | } |
| 743 | |
| 744 | endptr = s; |
| 745 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 746 | while (bracket_count-- > 0) if (*s++ != '>') |
| 747 | { |
| 748 | *errorptr = (s[-1] == 0)? US"'>' missing at end of address" : |
| 749 | string_sprintf("malformed address: %.32s may not follow %.*s", |
| 750 | s-1, s - (uschar *)mailbox - 1, mailbox); |
| 751 | goto PARSE_FAILED; |
| 752 | } |
| 753 | |
| 754 | s = skip_comment(s); |
| 755 | } |
| 756 | |
| 757 | /* Hitting '@' after the first local-part means we have definitely got an |
| 758 | addr-spec, on a strict reading of the RFC, and the rest of the string |
| 759 | should be the domain. However, for flexibility we allow for a route-address |
| 760 | not enclosed in <> as well, which is indicated by an empty first local |
| 761 | part preceding '@'. The source routing is, however, ignored. */ |
| 762 | |
| 763 | else if (*t == 0) |
| 764 | { |
| 765 | uschar *domainptr = yield; |
| 766 | s = read_route(s, t, errorptr); |
| 767 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 768 | *t = 0; /* Ensure route is ignored - probably overkill */ |
| 769 | s = read_addr_spec(s, t, 0, errorptr, &domainptr); |
| 770 | if (*errorptr != NULL) goto PARSE_FAILED; |
| 771 | *domain = domainptr - yield; |
| 772 | endptr = last_comment_position; |
| 773 | if (*domain == 0) FAILED(US"domain missing in source-routed address"); |
| 774 | } |
| 775 | |
| 776 | /* This is the strict case of local-part@domain. */ |
| 777 | |
| 778 | else |
| 779 | { |
| 780 | t += Ustrlen((const uschar *)t); |
| 781 | *t++ = *s++; |
| 782 | *domain = t - yield; |
| 783 | s = read_domain(s, t, errorptr); |
| 784 | if (*t == 0) goto PARSE_FAILED; |
| 785 | endptr = last_comment_position; |
| 786 | } |
| 787 | |
| 788 | /* Use goto to get here from the bare local part case. Arrive by falling |
| 789 | through for other cases. Endptr may have been moved over whitespace, so |
| 790 | move it back past white space if necessary. */ |
| 791 | |
| 792 | PARSE_SUCCEEDED: |
| 793 | if (*s != 0) |
| 794 | { |
| 795 | if (parse_found_group && *s == ';') |
| 796 | { |
| 797 | parse_found_group = FALSE; |
| 798 | parse_allow_group = TRUE; |
| 799 | } |
| 800 | else |
| 801 | { |
| 802 | *errorptr = string_sprintf("malformed address: %.32s may not follow %.*s", |
| 803 | s, s - (uschar *)mailbox, mailbox); |
| 804 | goto PARSE_FAILED; |
| 805 | } |
| 806 | } |
| 807 | *start = startptr - (uschar *)mailbox; /* Return offsets */ |
| 808 | while (isspace(endptr[-1])) endptr--; |
| 809 | *end = endptr - (uschar *)mailbox; |
| 810 | |
| 811 | /* Although this code has no limitation on the length of address extracted, |
| 812 | other parts of Exim may have limits, and in any case, RFC 2821 limits local |
| 813 | parts to 64 and domains to 255, so we do a check here, giving an error if the |
| 814 | address is ridiculously long. */ |
| 815 | |
| 816 | if (*end - *start > ADDRESS_MAXLENGTH) |
| 817 | { |
| 818 | *errorptr = string_sprintf("address is ridiculously long: %.64s...", yield); |
| 819 | return NULL; |
| 820 | } |
| 821 | |
| 822 | return (uschar *)yield; |
| 823 | |
| 824 | /* Use goto (via the macro FAILED) to get to here from a variety of places. |
| 825 | We might have an empty address in a group - the caller can choose to ignore |
| 826 | this. We must, however, keep the flags correct. */ |
| 827 | |
| 828 | PARSE_FAILED: |
| 829 | if (parse_found_group && *s == ';') |
| 830 | { |
| 831 | parse_found_group = FALSE; |
| 832 | parse_allow_group = TRUE; |
| 833 | } |
| 834 | return NULL; |
| 835 | } |
| 836 | |
| 837 | #undef FAILED |
| 838 | |
| 839 | |
| 840 | |
| 841 | /************************************************* |
| 842 | * Quote according to RFC 2047 * |
| 843 | *************************************************/ |
| 844 | |
| 845 | /* This function is used for quoting text in headers according to RFC 2047. |
| 846 | If the only characters that strictly need quoting are spaces, we return the |
| 847 | original string, unmodified. If a quoted string is too long for the buffer, it |
| 848 | is truncated. (This shouldn't happen: this is normally handling short strings.) |
| 849 | |
| 850 | Hmmph. As always, things get perverted for other uses. This function was |
| 851 | originally for the "phrase" part of addresses. Now it is being used for much |
| 852 | longer texts in ACLs and via the ${rfc2047: expansion item. This means we have |
| 853 | to check for overlong "encoded-word"s and split them. November 2004. |
| 854 | |
| 855 | Arguments: |
| 856 | string the string to quote - already checked to contain non-printing |
| 857 | chars |
| 858 | len the length of the string |
| 859 | charset the name of the character set; NULL => iso-8859-1 |
| 860 | buffer the buffer to put the answer in |
| 861 | buffer_size the size of the buffer |
| 862 | |
| 863 | Returns: pointer to the original string, if no quoting needed, or |
| 864 | pointer to buffer containing the quoted string, or |
| 865 | a pointer to "String too long" if the buffer can't even hold |
| 866 | the introduction |
| 867 | */ |
| 868 | |
| 869 | uschar * |
| 870 | parse_quote_2047(uschar *string, int len, uschar *charset, uschar *buffer, |
| 871 | int buffer_size) |
| 872 | { |
| 873 | uschar *s = string; |
| 874 | uschar *p, *t; |
| 875 | int hlen; |
| 876 | BOOL coded = FALSE; |
| 877 | |
| 878 | if (charset == NULL) charset = US"iso-8859-1"; |
| 879 | |
| 880 | /* We don't expect this to fail! */ |
| 881 | |
| 882 | if (!string_format(buffer, buffer_size, "=?%s?Q?", charset)) |
| 883 | return US"String too long"; |
| 884 | |
| 885 | hlen = Ustrlen(buffer); |
| 886 | t = buffer + hlen; |
| 887 | p = buffer; |
| 888 | |
| 889 | for (; len > 0; len--) |
| 890 | { |
| 891 | int ch = *s++; |
| 892 | if (t > buffer + buffer_size - hlen - 8) break; |
| 893 | |
| 894 | if (t - p > 70) |
| 895 | { |
| 896 | *t++ = '?'; |
| 897 | *t++ = '='; |
| 898 | *t++ = ' '; |
| 899 | p = t; |
| 900 | Ustrncpy(p, buffer, hlen); |
| 901 | t += hlen; |
| 902 | } |
| 903 | |
| 904 | if (ch < 33 || ch > 126 || |
| 905 | Ustrchr("?=()<>@,;:\\\".[]_", ch) != NULL) |
| 906 | { |
| 907 | if (ch == ' ') *t++ = '_'; else |
| 908 | { |
| 909 | sprintf(CS t, "=%02X", ch); |
| 910 | while (*t != 0) t++; |
| 911 | coded = TRUE; |
| 912 | } |
| 913 | } |
| 914 | else *t++ = ch; |
| 915 | } |
| 916 | |
| 917 | *t++ = '?'; |
| 918 | *t++ = '='; |
| 919 | *t = 0; |
| 920 | |
| 921 | return coded? buffer : string; |
| 922 | } |
| 923 | |
| 924 | |
| 925 | |
| 926 | |
| 927 | /************************************************* |
| 928 | * Fix up an RFC 822 "phrase" * |
| 929 | *************************************************/ |
| 930 | |
| 931 | /* This function is called to repair any syntactic defects in the "phrase" part |
| 932 | of an RFC822 address. In particular, it is applied to the user's name as read |
| 933 | from the passwd file when accepting a local message, and to the data from the |
| 934 | -F option. |
| 935 | |
| 936 | If the string contains existing quoted strings or comments containing |
| 937 | freestanding quotes, then we just quote those bits that need quoting - |
| 938 | otherwise it would get awfully messy and probably not look good. If not, we |
| 939 | quote the whole thing if necessary. Thus |
| 940 | |
| 941 | John Q. Smith => "John Q. Smith" |
| 942 | John "Jack" Smith => John "Jack" Smith |
| 943 | John "Jack" Q. Smith => John "Jack" "Q." Smith |
| 944 | John (Jack) Q. Smith => "John (Jack) Q. Smith" |
| 945 | John ("Jack") Q. Smith => John ("Jack") "Q." Smith |
| 946 | but |
| 947 | John (\"Jack\") Q. Smith => "John (\"Jack\") Q. Smith" |
| 948 | |
| 949 | Sheesh! This is tedious code. It is a great pity that the syntax of RFC822 is |
| 950 | the way it is... |
| 951 | |
| 952 | August 2000: Additional code added: |
| 953 | |
| 954 | Previously, non-printing characters were turned into question marks, which do |
| 955 | not need to be quoted. |
| 956 | |
| 957 | Now, a different tactic is used if there are any non-printing ASCII |
| 958 | characters. The encoding method from RFC 2047 is used, assuming iso-8859-1 as |
| 959 | the character set. |
| 960 | |
| 961 | We *could* use this for all cases, getting rid of the messy original code, |
| 962 | but leave it for now. It would complicate simple cases like "John Q. Smith". |
| 963 | |
| 964 | The result is passed back in the buffer; it is usually going to be added to |
| 965 | some other string. In order to be sure there is going to be no overflow, |
| 966 | restrict the length of the input to 1/4 of the buffer size - this allows for |
| 967 | every single character to be quoted or encoded without overflowing, and that |
| 968 | wouldn't happen because of amalgamation. If the phrase is too long, return a |
| 969 | fixed string. |
| 970 | |
| 971 | Arguments: |
| 972 | phrase an RFC822 phrase |
| 973 | len the length of the phrase |
| 974 | buffer a buffer to put the result in |
| 975 | buffer_size the size of the buffer |
| 976 | |
| 977 | Returns: the fixed RFC822 phrase |
| 978 | */ |
| 979 | |
| 980 | uschar * |
| 981 | parse_fix_phrase(uschar *phrase, int len, uschar *buffer, int buffer_size) |
| 982 | { |
| 983 | int ch, i; |
| 984 | BOOL quoted = FALSE; |
| 985 | uschar *s, *t, *end, *yield; |
| 986 | |
| 987 | while (len > 0 && isspace(*phrase)) { phrase++; len--; } |
| 988 | if (len > buffer_size/4) return US"Name too long"; |
| 989 | |
| 990 | /* See if there are any non-printing characters, and if so, use the RFC 2047 |
| 991 | encoding for the whole thing. */ |
| 992 | |
| 993 | for (i = 0, s = phrase; i < len; i++, s++) |
| 994 | if ((*s < 32 && *s != '\t') || *s > 126) break; |
| 995 | |
| 996 | if (i < len) return parse_quote_2047(phrase, len, headers_charset, buffer, |
| 997 | buffer_size); |
| 998 | |
| 999 | /* No non-printers; use the RFC 822 quoting rules */ |
| 1000 | |
| 1001 | s = phrase; |
| 1002 | end = s + len; |
| 1003 | yield = t = buffer + 1; |
| 1004 | |
| 1005 | while (s < end) |
| 1006 | { |
| 1007 | ch = *s++; |
| 1008 | |
| 1009 | /* Copy over quoted strings, remembering we encountered one */ |
| 1010 | |
| 1011 | if (ch == '\"') |
| 1012 | { |
| 1013 | *t++ = '\"'; |
| 1014 | while (s < end && (ch = *s++) != '\"') |
| 1015 | { |
| 1016 | *t++ = ch; |
| 1017 | if (ch == '\\' && s < end) *t++ = *s++; |
| 1018 | } |
| 1019 | *t++ = '\"'; |
| 1020 | if (s >= end) break; |
| 1021 | quoted = TRUE; |
| 1022 | } |
| 1023 | |
| 1024 | /* Copy over comments, noting if they contain freestanding quote |
| 1025 | characters */ |
| 1026 | |
| 1027 | else if (ch == '(') |
| 1028 | { |
| 1029 | int level = 1; |
| 1030 | *t++ = '('; |
| 1031 | while (s < end) |
| 1032 | { |
| 1033 | ch = *s++; |
| 1034 | *t++ = ch; |
| 1035 | if (ch == '(') level++; |
| 1036 | else if (ch == ')') { if (--level <= 0) break; } |
| 1037 | else if (ch == '\\' && s < end) *t++ = *s++ & 127; |
| 1038 | else if (ch == '\"') quoted = TRUE; |
| 1039 | } |
| 1040 | if (ch == 0) |
| 1041 | { |
| 1042 | while (level--) *t++ = ')'; |
| 1043 | break; |
| 1044 | } |
| 1045 | } |
| 1046 | |
| 1047 | /* Handle special characters that need to be quoted */ |
| 1048 | |
| 1049 | else if (Ustrchr(")<>@,;:\\.[]", ch) != NULL) |
| 1050 | { |
| 1051 | /* If hit previous quotes just make one quoted "word" */ |
| 1052 | |
| 1053 | if (quoted) |
| 1054 | { |
| 1055 | uschar *tt = t++; |
| 1056 | while (*(--tt) != ' ' && *tt != '\"' && *tt != ')') tt[1] = *tt; |
| 1057 | tt[1] = '\"'; |
| 1058 | *t++ = ch; |
| 1059 | while (s < end) |
| 1060 | { |
| 1061 | ch = *s++; |
| 1062 | if (ch == ' ' || ch == '\"') { s--; break; } else *t++ = ch; |
| 1063 | } |
| 1064 | *t++ = '\"'; |
| 1065 | } |
| 1066 | |
| 1067 | /* Else quote the whole string so far, and the rest up to any following |
| 1068 | quotes. We must treat anything following a backslash as a literal. */ |
| 1069 | |
| 1070 | else |
| 1071 | { |
| 1072 | BOOL escaped = (ch == '\\'); |
| 1073 | *(--yield) = '\"'; |
| 1074 | *t++ = ch; |
| 1075 | |
| 1076 | /* Now look for the end or a quote */ |
| 1077 | |
| 1078 | while (s < end) |
| 1079 | { |
| 1080 | ch = *s++; |
| 1081 | |
| 1082 | /* Handle escaped pairs */ |
| 1083 | |
| 1084 | if (escaped) |
| 1085 | { |
| 1086 | *t++ = ch; |
| 1087 | escaped = FALSE; |
| 1088 | } |
| 1089 | |
| 1090 | else if (ch == '\\') |
| 1091 | { |
| 1092 | *t++ = ch; |
| 1093 | escaped = TRUE; |
| 1094 | } |
| 1095 | |
| 1096 | /* If hit subsequent quotes, insert our quote before any trailing |
| 1097 | spaces and back up to re-handle the quote in the outer loop. */ |
| 1098 | |
| 1099 | else if (ch == '\"') |
| 1100 | { |
| 1101 | int count = 0; |
| 1102 | while (t[-1] == ' ') { t--; count++; } |
| 1103 | *t++ = '\"'; |
| 1104 | while (count-- > 0) *t++ = ' '; |
| 1105 | s--; |
| 1106 | break; |
| 1107 | } |
| 1108 | |
| 1109 | /* If hit a subsequent comment, check it for unescaped quotes, |
| 1110 | and if so, end our quote before it. */ |
| 1111 | |
| 1112 | else if (ch == '(') |
| 1113 | { |
| 1114 | uschar *ss = s; /* uschar after '(' */ |
| 1115 | int level = 1; |
| 1116 | while(ss < end) |
| 1117 | { |
| 1118 | ch = *ss++; |
| 1119 | if (ch == '(') level++; |
| 1120 | else if (ch == ')') { if (--level <= 0) break; } |
| 1121 | else if (ch == '\\' && ss+1 < end) ss++; |
| 1122 | else if (ch == '\"') { quoted = TRUE; break; } |
| 1123 | } |
| 1124 | |
| 1125 | /* Comment contains unescaped quotes; end our quote before |
| 1126 | the start of the comment. */ |
| 1127 | |
| 1128 | if (quoted) |
| 1129 | { |
| 1130 | int count = 0; |
| 1131 | while (t[-1] == ' ') { t--; count++; } |
| 1132 | *t++ = '\"'; |
| 1133 | while (count-- > 0) *t++ = ' '; |
| 1134 | break; |
| 1135 | } |
| 1136 | |
| 1137 | /* Comment does not contain unescaped quotes; include it in |
| 1138 | our quote. */ |
| 1139 | |
| 1140 | else |
| 1141 | { |
| 1142 | if (ss >= end) ss--; |
| 1143 | *t++ = '('; |
| 1144 | Ustrncpy(t, s, ss-s); |
| 1145 | t += ss-s; |
| 1146 | s = ss; |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | /* Not a comment or quote; include this character in our quotes. */ |
| 1151 | |
| 1152 | else *t++ = ch; |
| 1153 | } |
| 1154 | } |
| 1155 | |
| 1156 | /* Add a final quote if we hit the end of the string. */ |
| 1157 | |
| 1158 | if (s >= end) *t++ = '\"'; |
| 1159 | } |
| 1160 | |
| 1161 | /* Non-special character; just copy it over */ |
| 1162 | |
| 1163 | else *t++ = ch; |
| 1164 | } |
| 1165 | |
| 1166 | *t = 0; |
| 1167 | return yield; |
| 1168 | } |
| 1169 | |
| 1170 | |
| 1171 | /************************************************* |
| 1172 | * Extract addresses from a list * |
| 1173 | *************************************************/ |
| 1174 | |
| 1175 | /* This function is called by the redirect router to scan a string containing a |
| 1176 | list of addresses separated by commas (with optional white space) or by |
| 1177 | newlines, and to generate a chain of address items from them. In other words, |
| 1178 | to unpick data from an alias or .forward file. |
| 1179 | |
| 1180 | The SunOS5 documentation for alias files is not very clear on the syntax; it |
| 1181 | does not say that either a comma or a newline can be used for separation. |
| 1182 | However, that is the way Smail does it, so we follow suit. |
| 1183 | |
| 1184 | If a # character is encountered in a white space position, then characters from |
| 1185 | there to the next newline are skipped. |
| 1186 | |
| 1187 | If an unqualified address begins with '\', just skip that character. This gives |
| 1188 | compatibility with Sendmail's use of \ to prevent looping. Exim has its own |
| 1189 | loop prevention scheme which handles other cases too - see the code in |
| 1190 | route_address(). |
| 1191 | |
| 1192 | An "address" can be a specification of a file or a pipe; the latter may often |
| 1193 | need to be quoted because it may contain spaces, but we don't want to retain |
| 1194 | the quotes. Quotes may appear in normal addresses too, and should be retained. |
| 1195 | We can distinguish between these cases, because in addresses, quotes are used |
| 1196 | only for parts of the address, not the whole thing. Therefore, we remove quotes |
| 1197 | from items when they entirely enclose them, but not otherwise. |
| 1198 | |
| 1199 | An "address" can also be of the form :include:pathname to include a list of |
| 1200 | addresses contained in the specified file. |
| 1201 | |
| 1202 | Any unqualified addresses are qualified with and rewritten if necessary, via |
| 1203 | the rewrite_address() function. |
| 1204 | |
| 1205 | Arguments: |
| 1206 | s the list of addresses (typically a complete |
| 1207 | .forward file or a list of entries in an alias file) |
| 1208 | options option bits for permitting or denying various special cases; |
| 1209 | not all bits are relevant here - some are for filter |
| 1210 | files; those we use here are: |
| 1211 | RDO_DEFER |
| 1212 | RDO_FREEZE |
| 1213 | RDO_FAIL |
| 1214 | RDO_BLACKHOLE |
| 1215 | RDO_REWRITE |
| 1216 | RDO_INCLUDE |
| 1217 | anchor where to hang the chain of newly-created addresses. This |
| 1218 | should be initialized to NULL. |
| 1219 | error where to return an error text |
| 1220 | incoming domain domain of the incoming address; used to qualify unqualified |
| 1221 | local parts preceded by \ |
| 1222 | directory if NULL, no checks are done on :include: files |
| 1223 | otherwise, included file names must start with the given |
| 1224 | directory |
| 1225 | syntax_errors if not NULL, it carries on after syntax errors in addresses, |
| 1226 | building up a list of errors as error blocks chained on |
| 1227 | here. |
| 1228 | |
| 1229 | Returns: FF_DELIVERED addresses extracted |
| 1230 | FF_NOTDELIVERED no addresses extracted, but no errors |
| 1231 | FF_BLACKHOLE :blackhole: |
| 1232 | FF_DEFER :defer: |
| 1233 | FF_FAIL :fail: |
| 1234 | FF_INCLUDEFAIL some problem with :include:; *error set |
| 1235 | FF_ERROR other problems; *error is set |
| 1236 | */ |
| 1237 | |
| 1238 | int |
| 1239 | parse_forward_list(uschar *s, int options, address_item **anchor, |
| 1240 | uschar **error, uschar *incoming_domain, uschar *directory, |
| 1241 | error_block **syntax_errors) |
| 1242 | { |
| 1243 | int count = 0; |
| 1244 | |
| 1245 | DEBUG(D_route) debug_printf("parse_forward_list: %s\n", s); |
| 1246 | |
| 1247 | for (;;) |
| 1248 | { |
| 1249 | int len; |
| 1250 | int special = 0; |
| 1251 | int specopt = 0; |
| 1252 | int specbit = 0; |
| 1253 | uschar *ss, *nexts; |
| 1254 | address_item *addr; |
| 1255 | BOOL inquote = FALSE; |
| 1256 | |
| 1257 | for (;;) |
| 1258 | { |
| 1259 | while (isspace(*s) || *s == ',') s++; |
| 1260 | if (*s == '#') { while (*s != 0 && *s != '\n') s++; } else break; |
| 1261 | } |
| 1262 | |
| 1263 | /* When we reach the end of the list, we return FF_DELIVERED if any child |
| 1264 | addresses have been generated. If nothing has been generated, there are two |
| 1265 | possibilities: either the list is really empty, or there were syntax errors |
| 1266 | that are being skipped. (If syntax errors are not being skipped, an FF_ERROR |
| 1267 | return is generated on hitting a syntax error and we don't get here.) For a |
| 1268 | truly empty list we return FF_NOTDELIVERED so that the router can decline. |
| 1269 | However, if the list is empty only because syntax errors were skipped, we |
| 1270 | return FF_DELIVERED. */ |
| 1271 | |
| 1272 | if (*s == 0) |
| 1273 | { |
| 1274 | return (count > 0 || (syntax_errors != NULL && *syntax_errors != NULL))? |
| 1275 | FF_DELIVERED : FF_NOTDELIVERED; |
| 1276 | |
| 1277 | /* This previous code returns FF_ERROR if nothing is generated but a |
| 1278 | syntax error has been skipped. I now think it is the wrong approach, but |
| 1279 | have left this here just in case, and for the record. */ |
| 1280 | |
| 1281 | #ifdef NEVER |
| 1282 | if (count > 0) return FF_DELIVERED; /* Something was generated */ |
| 1283 | |
| 1284 | if (syntax_errors == NULL || /* Not skipping syntax errors, or */ |
| 1285 | *syntax_errors == NULL) /* we didn't actually skip any */ |
| 1286 | return FF_NOTDELIVERED; |
| 1287 | |
| 1288 | *error = string_sprintf("no addresses generated: syntax error in %s: %s", |
| 1289 | (*syntax_errors)->text2, (*syntax_errors)->text1); |
| 1290 | return FF_ERROR; |
| 1291 | #endif |
| 1292 | |
| 1293 | } |
| 1294 | |
| 1295 | /* Find the end of the next address. Quoted strings in addresses may contain |
| 1296 | escaped characters; I haven't found a proper specification of .forward or |
| 1297 | alias files that mentions the quoting properties, but it seems right to do |
| 1298 | the escaping thing in all cases, so use the function that finds the end of an |
| 1299 | address. However, don't let a quoted string extend over the end of a line. */ |
| 1300 | |
| 1301 | ss = parse_find_address_end(s, TRUE); |
| 1302 | |
| 1303 | /* Remember where we finished, for starting the next one. */ |
| 1304 | |
| 1305 | nexts = ss; |
| 1306 | |
| 1307 | /* Remove any trailing spaces; we know there's at least one non-space. */ |
| 1308 | |
| 1309 | while (isspace((ss[-1]))) ss--; |
| 1310 | |
| 1311 | /* We now have s->start and ss->end of the next address. Remove quotes |
| 1312 | if they completely enclose, remembering the address started with a quote |
| 1313 | for handling pipes and files. Another round of removal of leading and |
| 1314 | trailing spaces is then required. */ |
| 1315 | |
| 1316 | if (*s == '\"' && ss[-1] == '\"') |
| 1317 | { |
| 1318 | s++; |
| 1319 | ss--; |
| 1320 | inquote = TRUE; |
| 1321 | while (s < ss && isspace(*s)) s++; |
| 1322 | while (ss > s && isspace((ss[-1]))) ss--; |
| 1323 | } |
| 1324 | |
| 1325 | /* Set up the length of the address. */ |
| 1326 | |
| 1327 | len = ss - s; |
| 1328 | |
| 1329 | DEBUG(D_route) |
| 1330 | { |
| 1331 | int save = s[len]; |
| 1332 | s[len] = 0; |
| 1333 | debug_printf("extract item: %s\n", s); |
| 1334 | s[len] = save; |
| 1335 | } |
| 1336 | |
| 1337 | /* Handle special addresses if permitted. If the address is :unknown: |
| 1338 | ignore it - this is for backward compatibility with old alias files. You |
| 1339 | don't need to use it nowadays - just generate an empty string. For :defer:, |
| 1340 | :blackhole:, or :fail: we have to set up the error message and give up right |
| 1341 | away. */ |
| 1342 | |
| 1343 | if (Ustrncmp(s, ":unknown:", len) == 0) |
| 1344 | { |
| 1345 | s = nexts; |
| 1346 | continue; |
| 1347 | } |
| 1348 | |
| 1349 | if (Ustrncmp(s, ":defer:", 7) == 0) |
| 1350 | { special = FF_DEFER; specopt = RDO_DEFER; } /* specbit is 0 */ |
| 1351 | else if (Ustrncmp(s, ":blackhole:", 11) == 0) |
| 1352 | { special = FF_BLACKHOLE; specopt = specbit = RDO_BLACKHOLE; } |
| 1353 | else if (Ustrncmp(s, ":fail:", 6) == 0) |
| 1354 | { special = FF_FAIL; specopt = RDO_FAIL; } /* specbit is 0 */ |
| 1355 | |
| 1356 | if (special != 0) |
| 1357 | { |
| 1358 | uschar *ss = Ustrchr(s+1, ':') + 1; |
| 1359 | if ((options & specopt) == specbit) |
| 1360 | { |
| 1361 | *error = string_sprintf("\"%.*s\" is not permitted", len, s); |
| 1362 | return FF_ERROR; |
| 1363 | } |
| 1364 | while (*ss != 0 && isspace(*ss)) ss++; |
| 1365 | while (s[len] != 0 && s[len] != '\n') len++; |
| 1366 | s[len] = 0; |
| 1367 | *error = string_copy(ss); |
| 1368 | return special; |
| 1369 | } |
| 1370 | |
| 1371 | /* If the address is of the form :include:pathname, read the file, and call |
| 1372 | this function recursively to extract the addresses from it. If directory is |
| 1373 | NULL, do no checks. Otherwise, insist that the file name starts with the |
| 1374 | given directory and is a regular file. */ |
| 1375 | |
| 1376 | if (Ustrncmp(s, ":include:", 9) == 0) |
| 1377 | { |
| 1378 | uschar *filebuf; |
| 1379 | uschar filename[256]; |
| 1380 | uschar *t = s+9; |
| 1381 | int flen = len - 9; |
| 1382 | int frc; |
| 1383 | struct stat statbuf; |
| 1384 | address_item *last; |
| 1385 | FILE *f; |
| 1386 | |
| 1387 | while (flen > 0 && isspace(*t)) { t++; flen--; } |
| 1388 | |
| 1389 | if (flen <= 0) |
| 1390 | { |
| 1391 | *error = string_sprintf("file name missing after :include:"); |
| 1392 | return FF_ERROR; |
| 1393 | } |
| 1394 | |
| 1395 | if (flen > 255) |
| 1396 | { |
| 1397 | *error = string_sprintf("included file name \"%s\" is too long", t); |
| 1398 | return FF_ERROR; |
| 1399 | } |
| 1400 | |
| 1401 | Ustrncpy(filename, t, flen); |
| 1402 | filename[flen] = 0; |
| 1403 | |
| 1404 | /* Insist on absolute path */ |
| 1405 | |
| 1406 | if (filename[0]!= '/') |
| 1407 | { |
| 1408 | *error = string_sprintf("included file \"%s\" is not an absolute path", |
| 1409 | filename); |
| 1410 | return FF_ERROR; |
| 1411 | } |
| 1412 | |
| 1413 | /* Check if include is permitted */ |
| 1414 | |
| 1415 | if ((options & RDO_INCLUDE) != 0) |
| 1416 | { |
| 1417 | *error = US"included files not permitted"; |
| 1418 | return FF_ERROR; |
| 1419 | } |
| 1420 | |
| 1421 | /* Check file name if required */ |
| 1422 | |
| 1423 | if (directory != NULL) |
| 1424 | { |
| 1425 | int len = Ustrlen(directory); |
| 1426 | uschar *p = filename + len; |
| 1427 | |
| 1428 | if (Ustrncmp(filename, directory, len) != 0 || *p != '/') |
| 1429 | { |
| 1430 | *error = string_sprintf("included file %s is not in directory %s", |
| 1431 | filename, directory); |
| 1432 | return FF_ERROR; |
| 1433 | } |
| 1434 | |
| 1435 | /* It is necessary to check that every component inside the directory |
| 1436 | is NOT a symbolic link, in order to keep the file inside the directory. |
| 1437 | This is mighty tedious. It is also not totally foolproof in that it |
| 1438 | leaves the possibility of a race attack, but I don't know how to do |
| 1439 | any better. */ |
| 1440 | |
| 1441 | while (*p != 0) |
| 1442 | { |
| 1443 | int temp; |
| 1444 | while (*(++p) != 0 && *p != '/'); |
| 1445 | temp = *p; |
| 1446 | *p = 0; |
| 1447 | if (Ulstat(filename, &statbuf) != 0) |
| 1448 | { |
| 1449 | *error = string_sprintf("failed to stat %s (component of included " |
| 1450 | "file)", filename); |
| 1451 | *p = temp; |
| 1452 | return FF_ERROR; |
| 1453 | } |
| 1454 | |
| 1455 | *p = temp; |
| 1456 | |
| 1457 | if ((statbuf.st_mode & S_IFMT) == S_IFLNK) |
| 1458 | { |
| 1459 | *error = string_sprintf("included file %s in the %s directory " |
| 1460 | "involves a symbolic link", filename, directory); |
| 1461 | return FF_ERROR; |
| 1462 | } |
| 1463 | } |
| 1464 | } |
| 1465 | |
| 1466 | /* Open and stat the file */ |
| 1467 | |
| 1468 | if ((f = Ufopen(filename, "rb")) == NULL) |
| 1469 | { |
| 1470 | *error = string_open_failed(errno, "included file %s", filename); |
| 1471 | return FF_INCLUDEFAIL; |
| 1472 | } |
| 1473 | |
| 1474 | if (fstat(fileno(f), &statbuf) != 0) |
| 1475 | { |
| 1476 | *error = string_sprintf("failed to stat included file %s: %s", |
| 1477 | filename, strerror(errno)); |
| 1478 | (void)fclose(f); |
| 1479 | return FF_INCLUDEFAIL; |
| 1480 | } |
| 1481 | |
| 1482 | /* If directory was checked, double check that we opened a regular file */ |
| 1483 | |
| 1484 | if (directory != NULL && (statbuf.st_mode & S_IFMT) != S_IFREG) |
| 1485 | { |
| 1486 | *error = string_sprintf("included file %s is not a regular file in " |
| 1487 | "the %s directory", filename, directory); |
| 1488 | return FF_ERROR; |
| 1489 | } |
| 1490 | |
| 1491 | /* Get a buffer and read the contents */ |
| 1492 | |
| 1493 | if (statbuf.st_size > MAX_INCLUDE_SIZE) |
| 1494 | { |
| 1495 | *error = string_sprintf("included file %s is too big (max %d)", |
| 1496 | filename, MAX_INCLUDE_SIZE); |
| 1497 | return FF_ERROR; |
| 1498 | } |
| 1499 | |
| 1500 | filebuf = store_get(statbuf.st_size + 1); |
| 1501 | if (fread(filebuf, 1, statbuf.st_size, f) != statbuf.st_size) |
| 1502 | { |
| 1503 | *error = string_sprintf("error while reading included file %s: %s", |
| 1504 | filename, strerror(errno)); |
| 1505 | (void)fclose(f); |
| 1506 | return FF_ERROR; |
| 1507 | } |
| 1508 | filebuf[statbuf.st_size] = 0; |
| 1509 | (void)fclose(f); |
| 1510 | |
| 1511 | addr = NULL; |
| 1512 | frc = parse_forward_list(filebuf, options, &addr, |
| 1513 | error, incoming_domain, directory, syntax_errors); |
| 1514 | if (frc != FF_DELIVERED && frc != FF_NOTDELIVERED) return frc; |
| 1515 | |
| 1516 | if (addr != NULL) |
| 1517 | { |
| 1518 | last = addr; |
| 1519 | while (last->next != NULL) { count++; last = last->next; } |
| 1520 | last->next = *anchor; |
| 1521 | *anchor = addr; |
| 1522 | count++; |
| 1523 | } |
| 1524 | } |
| 1525 | |
| 1526 | /* Else (not :include:) ensure address is syntactically correct and fully |
| 1527 | qualified if not a pipe or a file, removing a leading \ if present on an |
| 1528 | unqualified address. For pipes and files we must handle quoting. It's |
| 1529 | not quite clear exactly what to do for partially quoted things, but the |
| 1530 | common case of having the whole thing in quotes is straightforward. If this |
| 1531 | was the case, inquote will have been set TRUE above and the quotes removed. |
| 1532 | |
| 1533 | There is a possible ambiguity over addresses whose local parts start with |
| 1534 | a vertical bar or a slash, and the latter do in fact occur, thanks to X.400. |
| 1535 | Consider a .forward file that contains the line |
| 1536 | |
| 1537 | /X=xxx/Y=xxx/OU=xxx/@some.gate.way |
| 1538 | |
| 1539 | Is this a file or an X.400 address? Does it make any difference if it is in |
| 1540 | quotes? On the grounds that file names of this type are rare, Exim treats |
| 1541 | something that parses as an RFC 822 address and has a domain as an address |
| 1542 | rather than a file or a pipe. This is also how an address such as the above |
| 1543 | would be treated if it came in from outside. */ |
| 1544 | |
| 1545 | else |
| 1546 | { |
| 1547 | int start, end, domain; |
| 1548 | uschar *recipient = NULL; |
| 1549 | int save = s[len]; |
| 1550 | s[len] = 0; |
| 1551 | |
| 1552 | /* If it starts with \ and the rest of it parses as a valid mail address |
| 1553 | without a domain, carry on with that address, but qualify it with the |
| 1554 | incoming domain. Otherwise arrange for the address to fall through, |
| 1555 | causing an error message on the re-parse. */ |
| 1556 | |
| 1557 | if (*s == '\\') |
| 1558 | { |
| 1559 | recipient = |
| 1560 | parse_extract_address(s+1, error, &start, &end, &domain, FALSE); |
| 1561 | if (recipient != NULL) |
| 1562 | recipient = (domain != 0)? NULL : |
| 1563 | string_sprintf("%s@%s", recipient, incoming_domain); |
| 1564 | } |
| 1565 | |
| 1566 | /* Try parsing the item as an address. */ |
| 1567 | |
| 1568 | if (recipient == NULL) recipient = |
| 1569 | parse_extract_address(s, error, &start, &end, &domain, FALSE); |
| 1570 | |
| 1571 | /* If item starts with / or | and is not a valid address, or there |
| 1572 | is no domain, treat it as a file or pipe. If it was a quoted item, |
| 1573 | remove the quoting occurrences of \ within it. */ |
| 1574 | |
| 1575 | if ((*s == '|' || *s == '/') && (recipient == NULL || domain == 0)) |
| 1576 | { |
| 1577 | uschar *t = store_get(Ustrlen(s) + 1); |
| 1578 | uschar *p = t; |
| 1579 | uschar *q = s; |
| 1580 | while (*q != 0) |
| 1581 | { |
| 1582 | if (inquote) |
| 1583 | { |
| 1584 | *p++ = (*q == '\\')? *(++q) : *q; |
| 1585 | q++; |
| 1586 | } |
| 1587 | else *p++ = *q++; |
| 1588 | } |
| 1589 | *p = 0; |
| 1590 | addr = deliver_make_addr(t, TRUE); |
| 1591 | setflag(addr, af_pfr); /* indicates pipe/file/reply */ |
| 1592 | if (*s != '|') setflag(addr, af_file); /* indicates file */ |
| 1593 | } |
| 1594 | |
| 1595 | /* Item must be an address. Complain if not, else qualify, rewrite and set |
| 1596 | up the control block. It appears that people are in the habit of using |
| 1597 | empty addresses but with comments as a way of putting comments into |
| 1598 | alias and forward files. Therefore, ignore the error "empty address". |
| 1599 | Mailing lists might want to tolerate syntax errors; there is therefore |
| 1600 | an option to do so. */ |
| 1601 | |
| 1602 | else |
| 1603 | { |
| 1604 | if (recipient == NULL) |
| 1605 | { |
| 1606 | if (Ustrcmp(*error, "empty address") == 0) |
| 1607 | { |
| 1608 | *error = NULL; |
| 1609 | s[len] = save; |
| 1610 | s = nexts; |
| 1611 | continue; |
| 1612 | } |
| 1613 | |
| 1614 | if (syntax_errors != NULL) |
| 1615 | { |
| 1616 | error_block *e = store_get(sizeof(error_block)); |
| 1617 | error_block *last = *syntax_errors; |
| 1618 | if (last == NULL) *syntax_errors = e; else |
| 1619 | { |
| 1620 | while (last->next != NULL) last = last->next; |
| 1621 | last->next = e; |
| 1622 | } |
| 1623 | e->next = NULL; |
| 1624 | e->text1 = *error; |
| 1625 | e->text2 = string_copy(s); |
| 1626 | s[len] = save; |
| 1627 | s = nexts; |
| 1628 | continue; |
| 1629 | } |
| 1630 | else |
| 1631 | { |
| 1632 | *error = string_sprintf("%s in \"%s\"", *error, s); |
| 1633 | s[len] = save; /* _after_ using it for *error */ |
| 1634 | return FF_ERROR; |
| 1635 | } |
| 1636 | } |
| 1637 | |
| 1638 | /* Address was successfully parsed. Rewrite, and then make an address |
| 1639 | block. */ |
| 1640 | |
| 1641 | recipient = ((options & RDO_REWRITE) != 0)? |
| 1642 | rewrite_address(recipient, TRUE, FALSE, global_rewrite_rules, |
| 1643 | rewrite_existflags) : |
| 1644 | rewrite_address_qualify(recipient, TRUE); |
| 1645 | addr = deliver_make_addr(recipient, TRUE); /* TRUE => copy recipient */ |
| 1646 | } |
| 1647 | |
| 1648 | /* Restore the final character in the original data, and add to the |
| 1649 | output chain. */ |
| 1650 | |
| 1651 | s[len] = save; |
| 1652 | addr->next = *anchor; |
| 1653 | *anchor = addr; |
| 1654 | count++; |
| 1655 | } |
| 1656 | |
| 1657 | /* Advance pointer for the next address */ |
| 1658 | |
| 1659 | s = nexts; |
| 1660 | } |
| 1661 | } |
| 1662 | |
| 1663 | |
| 1664 | /************************************************* |
| 1665 | ************************************************** |
| 1666 | * Stand-alone test program * |
| 1667 | ************************************************** |
| 1668 | *************************************************/ |
| 1669 | |
| 1670 | #if defined STAND_ALONE |
| 1671 | int main(void) |
| 1672 | { |
| 1673 | int start, end, domain; |
| 1674 | uschar buffer[1024]; |
| 1675 | uschar outbuff[1024]; |
| 1676 | |
| 1677 | big_buffer = store_malloc(big_buffer_size); |
| 1678 | |
| 1679 | /* strip_trailing_dot = TRUE; */ |
| 1680 | allow_domain_literals = TRUE; |
| 1681 | |
| 1682 | printf("Testing parse_fix_phrase\n"); |
| 1683 | |
| 1684 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1685 | { |
| 1686 | buffer[Ustrlen(buffer)-1] = 0; |
| 1687 | if (buffer[0] == 0) break; |
| 1688 | printf("%s\n", CS parse_fix_phrase(buffer, Ustrlen(buffer), outbuff, |
| 1689 | sizeof(outbuff))); |
| 1690 | } |
| 1691 | |
| 1692 | printf("Testing parse_extract_address without group syntax and without UTF-8\n"); |
| 1693 | |
| 1694 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1695 | { |
| 1696 | uschar *out; |
| 1697 | uschar *errmess; |
| 1698 | buffer[Ustrlen(buffer) - 1] = 0; |
| 1699 | if (buffer[0] == 0) break; |
| 1700 | out = parse_extract_address(buffer, &errmess, &start, &end, &domain, FALSE); |
| 1701 | if (out == NULL) printf("*** bad address: %s\n", errmess); else |
| 1702 | { |
| 1703 | uschar extract[1024]; |
| 1704 | Ustrncpy(extract, buffer+start, end-start); |
| 1705 | extract[end-start] = 0; |
| 1706 | printf("%s %d %d %d \"%s\"\n", out, start, end, domain, extract); |
| 1707 | } |
| 1708 | } |
| 1709 | |
| 1710 | printf("Testing parse_extract_address without group syntax but with UTF-8\n"); |
| 1711 | |
| 1712 | allow_utf8_domains = TRUE; |
| 1713 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1714 | { |
| 1715 | uschar *out; |
| 1716 | uschar *errmess; |
| 1717 | buffer[Ustrlen(buffer) - 1] = 0; |
| 1718 | if (buffer[0] == 0) break; |
| 1719 | out = parse_extract_address(buffer, &errmess, &start, &end, &domain, FALSE); |
| 1720 | if (out == NULL) printf("*** bad address: %s\n", errmess); else |
| 1721 | { |
| 1722 | uschar extract[1024]; |
| 1723 | Ustrncpy(extract, buffer+start, end-start); |
| 1724 | extract[end-start] = 0; |
| 1725 | printf("%s %d %d %d \"%s\"\n", out, start, end, domain, extract); |
| 1726 | } |
| 1727 | } |
| 1728 | allow_utf8_domains = FALSE; |
| 1729 | |
| 1730 | printf("Testing parse_extract_address with group syntax\n"); |
| 1731 | |
| 1732 | parse_allow_group = TRUE; |
| 1733 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1734 | { |
| 1735 | uschar *out; |
| 1736 | uschar *errmess; |
| 1737 | uschar *s; |
| 1738 | buffer[Ustrlen(buffer) - 1] = 0; |
| 1739 | if (buffer[0] == 0) break; |
| 1740 | s = buffer; |
| 1741 | while (*s != 0) |
| 1742 | { |
| 1743 | uschar *ss = parse_find_address_end(s, FALSE); |
| 1744 | int terminator = *ss; |
| 1745 | *ss = 0; |
| 1746 | out = parse_extract_address(buffer, &errmess, &start, &end, &domain, FALSE); |
| 1747 | *ss = terminator; |
| 1748 | |
| 1749 | if (out == NULL) printf("*** bad address: %s\n", errmess); else |
| 1750 | { |
| 1751 | uschar extract[1024]; |
| 1752 | Ustrncpy(extract, buffer+start, end-start); |
| 1753 | extract[end-start] = 0; |
| 1754 | printf("%s %d %d %d \"%s\"\n", out, start, end, domain, extract); |
| 1755 | } |
| 1756 | |
| 1757 | s = ss + (terminator? 1:0); |
| 1758 | while (isspace(*s)) s++; |
| 1759 | } |
| 1760 | } |
| 1761 | |
| 1762 | printf("Testing parse_find_at\n"); |
| 1763 | |
| 1764 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1765 | { |
| 1766 | uschar *s; |
| 1767 | buffer[Ustrlen(buffer)-1] = 0; |
| 1768 | if (buffer[0] == 0) break; |
| 1769 | s = parse_find_at(buffer); |
| 1770 | if (s == NULL) printf("no @ found\n"); |
| 1771 | else printf("offset = %d\n", s - buffer); |
| 1772 | } |
| 1773 | |
| 1774 | printf("Testing parse_extract_addresses\n"); |
| 1775 | |
| 1776 | while (Ufgets(buffer, sizeof(buffer), stdin) != NULL) |
| 1777 | { |
| 1778 | uschar *errmess; |
| 1779 | int extracted; |
| 1780 | address_item *anchor = NULL; |
| 1781 | buffer[Ustrlen(buffer) - 1] = 0; |
| 1782 | if (buffer[0] == 0) break; |
| 1783 | if ((extracted = parse_forward_list(buffer, -1, &anchor, |
| 1784 | &errmess, US"incoming.domain", NULL, NULL)) == FF_DELIVERED) |
| 1785 | { |
| 1786 | while (anchor != NULL) |
| 1787 | { |
| 1788 | address_item *addr = anchor; |
| 1789 | anchor = anchor->next; |
| 1790 | printf("%d %s\n", testflag(addr, af_pfr), addr->address); |
| 1791 | } |
| 1792 | } |
| 1793 | else printf("Failed: %d %s\n", extracted, errmess); |
| 1794 | } |
| 1795 | |
| 1796 | return 0; |
| 1797 | } |
| 1798 | |
| 1799 | #endif |
| 1800 | |
| 1801 | /* End of parse.c */ |