| 1 | /* $Cambridge: exim/src/src/sieve.c,v 1.13 2005/08/30 10:55:52 ph10 Exp $ */ |
| 2 | |
| 3 | /************************************************* |
| 4 | * Exim - an Internet mail transport agent * |
| 5 | *************************************************/ |
| 6 | |
| 7 | /* Copyright (c) Michael Haardt 2003-2005 */ |
| 8 | /* See the file NOTICE for conditions of use and distribution. */ |
| 9 | |
| 10 | /* This code was contributed by Michael Haardt. */ |
| 11 | |
| 12 | |
| 13 | /* Sieve mail filter. */ |
| 14 | |
| 15 | #include <ctype.h> |
| 16 | #include <errno.h> |
| 17 | #include <limits.h> |
| 18 | #include <stdlib.h> |
| 19 | #include <string.h> |
| 20 | |
| 21 | #include "exim.h" |
| 22 | |
| 23 | #if HAVE_ICONV |
| 24 | #include <iconv.h> |
| 25 | #endif |
| 26 | |
| 27 | /* Define this for RFC compliant \r\n end-of-line terminators. */ |
| 28 | /* Undefine it for UNIX-style \n end-of-line terminators (default). */ |
| 29 | #undef RFC_EOL |
| 30 | |
| 31 | /* Define this for development of the subaddress Sieve extension. */ |
| 32 | #define SUBADDRESS |
| 33 | |
| 34 | /* Define this for the vacation Sieve extension. */ |
| 35 | #define VACATION |
| 36 | |
| 37 | /* Must be >= 1 */ |
| 38 | #define VACATION_MIN_DAYS 1 |
| 39 | /* Must be >= VACATION_MIN_DAYS, must be > 7, should be > 30 */ |
| 40 | #define VACATION_MAX_DAYS 31 |
| 41 | |
| 42 | /* Keep this at 75 to accept only RFC compliant MIME words. */ |
| 43 | /* Increase it if you want to match headers from buggy MUAs. */ |
| 44 | #define MIMEWORD_LENGTH 75 |
| 45 | |
| 46 | struct Sieve |
| 47 | { |
| 48 | uschar *filter; |
| 49 | const uschar *pc; |
| 50 | int line; |
| 51 | const uschar *errmsg; |
| 52 | int keep; |
| 53 | int require_envelope; |
| 54 | int require_fileinto; |
| 55 | #ifdef SUBADDRESS |
| 56 | int require_subaddress; |
| 57 | #endif |
| 58 | #ifdef VACATION |
| 59 | int require_vacation; |
| 60 | int vacation_ran; |
| 61 | #endif |
| 62 | uschar *vacation_directory; |
| 63 | const uschar *subaddress; |
| 64 | const uschar *useraddress; |
| 65 | int require_copy; |
| 66 | int require_iascii_numeric; |
| 67 | }; |
| 68 | |
| 69 | enum Comparator { COMP_OCTET, COMP_EN_ASCII_CASEMAP, COMP_ASCII_NUMERIC }; |
| 70 | enum MatchType { MATCH_IS, MATCH_CONTAINS, MATCH_MATCHES }; |
| 71 | #ifdef SUBADDRESS |
| 72 | enum AddressPart { ADDRPART_USER, ADDRPART_DETAIL, ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL }; |
| 73 | #else |
| 74 | enum AddressPart { ADDRPART_LOCALPART, ADDRPART_DOMAIN, ADDRPART_ALL }; |
| 75 | #endif |
| 76 | enum RelOp { LT, LE, EQ, GE, GT, NE }; |
| 77 | |
| 78 | struct String |
| 79 | { |
| 80 | uschar *character; |
| 81 | int length; |
| 82 | }; |
| 83 | |
| 84 | static int parse_test(struct Sieve *filter, int *cond, int exec); |
| 85 | static int parse_commands(struct Sieve *filter, int exec, address_item **generated); |
| 86 | |
| 87 | static uschar str_from_c[]="From"; |
| 88 | static const struct String str_from={ str_from_c, 4 }; |
| 89 | static uschar str_to_c[]="To"; |
| 90 | static const struct String str_to={ str_to_c, 2 }; |
| 91 | static uschar str_cc_c[]="Cc"; |
| 92 | static const struct String str_cc={ str_cc_c, 2 }; |
| 93 | static uschar str_bcc_c[]="Bcc"; |
| 94 | static const struct String str_bcc={ str_bcc_c, 3 }; |
| 95 | static uschar str_sender_c[]="Sender"; |
| 96 | static const struct String str_sender={ str_sender_c, 6 }; |
| 97 | static uschar str_resent_from_c[]="Resent-From"; |
| 98 | static const struct String str_resent_from={ str_resent_from_c, 11 }; |
| 99 | static uschar str_resent_to_c[]="Resent-To"; |
| 100 | static const struct String str_resent_to={ str_resent_to_c, 9 }; |
| 101 | static uschar str_fileinto_c[]="fileinto"; |
| 102 | static const struct String str_fileinto={ str_fileinto_c, 8 }; |
| 103 | static uschar str_envelope_c[]="envelope"; |
| 104 | static const struct String str_envelope={ str_envelope_c, 8 }; |
| 105 | #ifdef SUBADDRESS |
| 106 | static uschar str_subaddress_c[]="subaddress"; |
| 107 | static const struct String str_subaddress={ str_subaddress_c, 10 }; |
| 108 | #endif |
| 109 | #ifdef VACATION |
| 110 | static uschar str_vacation_c[]="vacation"; |
| 111 | static const struct String str_vacation={ str_vacation_c, 8 }; |
| 112 | static uschar str_subject_c[]="Subject"; |
| 113 | static const struct String str_subject={ str_subject_c, 7 }; |
| 114 | #endif |
| 115 | static uschar str_copy_c[]="copy"; |
| 116 | static const struct String str_copy={ str_copy_c, 4 }; |
| 117 | static uschar str_iascii_casemap_c[]="i;ascii-casemap"; |
| 118 | static const struct String str_iascii_casemap={ str_iascii_casemap_c, 15 }; |
| 119 | static uschar str_enascii_casemap_c[]="en;ascii-casemap"; |
| 120 | static const struct String str_enascii_casemap={ str_enascii_casemap_c, 16 }; |
| 121 | static uschar str_ioctet_c[]="i;octet"; |
| 122 | static const struct String str_ioctet={ str_ioctet_c, 7 }; |
| 123 | static uschar str_iascii_numeric_c[]="i;ascii-numeric"; |
| 124 | static const struct String str_iascii_numeric={ str_iascii_numeric_c, 15 }; |
| 125 | static uschar str_comparator_iascii_casemap_c[]="comparator-i;ascii-casemap"; |
| 126 | static const struct String str_comparator_iascii_casemap={ str_comparator_iascii_casemap_c, 26 }; |
| 127 | static uschar str_comparator_enascii_casemap_c[]="comparator-en;ascii-casemap"; |
| 128 | static const struct String str_comparator_enascii_casemap={ str_comparator_enascii_casemap_c, 27 }; |
| 129 | static uschar str_comparator_ioctet_c[]="comparator-i;octet"; |
| 130 | static const struct String str_comparator_ioctet={ str_comparator_ioctet_c, 18 }; |
| 131 | static uschar str_comparator_iascii_numeric_c[]="comparator-i;ascii-numeric"; |
| 132 | static const struct String str_comparator_iascii_numeric={ str_comparator_iascii_numeric_c, 26 }; |
| 133 | |
| 134 | |
| 135 | /************************************************* |
| 136 | * Encode to quoted-printable * |
| 137 | *************************************************/ |
| 138 | |
| 139 | /* |
| 140 | Arguments: |
| 141 | src UTF-8 string |
| 142 | */ |
| 143 | |
| 144 | static struct String *quoted_printable_encode(const struct String *src, struct String *dst) |
| 145 | { |
| 146 | int pass; |
| 147 | const uschar *start,*end; |
| 148 | uschar *new = NULL; |
| 149 | uschar ch; |
| 150 | size_t line; |
| 151 | |
| 152 | for (pass=0; pass<=1; ++pass) |
| 153 | { |
| 154 | line=0; |
| 155 | if (pass==0) |
| 156 | dst->length=0; |
| 157 | else |
| 158 | { |
| 159 | dst->character=store_get(dst->length+1); /* plus one for \0 */ |
| 160 | new=dst->character; |
| 161 | } |
| 162 | for (start=src->character,end=start+src->length; start<end; ++start) |
| 163 | { |
| 164 | ch=*start; |
| 165 | if (line>=73) |
| 166 | { |
| 167 | if (pass==0) |
| 168 | dst->length+=2; |
| 169 | else |
| 170 | { |
| 171 | *new++='='; |
| 172 | *new++='\n'; |
| 173 | } |
| 174 | line=0; |
| 175 | } |
| 176 | if |
| 177 | ( |
| 178 | (ch>=33 && ch<=60) |
| 179 | || (ch>=62 && ch<=126) |
| 180 | || |
| 181 | ( |
| 182 | (ch==9 || ch==32) |
| 183 | #ifdef RFC_EOL |
| 184 | && start+2<end |
| 185 | && (*(start+1)!='\r' || *(start+2)!='\n') |
| 186 | #else |
| 187 | && start+1<end |
| 188 | && *(start+1)!='\n' |
| 189 | #endif |
| 190 | ) |
| 191 | ) |
| 192 | { |
| 193 | if (pass==0) |
| 194 | ++dst->length; |
| 195 | else |
| 196 | *new++=*start; |
| 197 | ++line; |
| 198 | } |
| 199 | #ifdef RFC_EOL |
| 200 | else if (ch=='\r' && start+1<end && *(start+1)=='\n') |
| 201 | { |
| 202 | if (pass==0) |
| 203 | { |
| 204 | ++dst->length; |
| 205 | line=0; |
| 206 | ++start; |
| 207 | } |
| 208 | else |
| 209 | *new++='\n'; |
| 210 | line=0; |
| 211 | } |
| 212 | #else |
| 213 | else if (ch=='\n') |
| 214 | { |
| 215 | if (pass==0) |
| 216 | ++dst->length; |
| 217 | else |
| 218 | *new++=*start; |
| 219 | ++line; |
| 220 | } |
| 221 | #endif |
| 222 | else |
| 223 | { |
| 224 | if (pass==0) |
| 225 | dst->length+=3; |
| 226 | else |
| 227 | { |
| 228 | sprintf(CS new,"=%02X",ch); |
| 229 | new+=3; |
| 230 | } |
| 231 | line+=3; |
| 232 | } |
| 233 | } |
| 234 | } |
| 235 | *new='\0'; /* not included in length, but nice */ |
| 236 | return dst; |
| 237 | } |
| 238 | |
| 239 | |
| 240 | /************************************************* |
| 241 | * Octet-wise string comparison * |
| 242 | *************************************************/ |
| 243 | |
| 244 | /* |
| 245 | Arguments: |
| 246 | needle UTF-8 string to search ... |
| 247 | haystack ... inside the haystack |
| 248 | match_prefix 1 to compare if needle is a prefix of haystack |
| 249 | |
| 250 | Returns: 0 needle not found in haystack |
| 251 | 1 needle found |
| 252 | */ |
| 253 | |
| 254 | static int eq_octet(const struct String *needle, |
| 255 | const struct String *haystack, int match_prefix) |
| 256 | { |
| 257 | size_t nl,hl; |
| 258 | const uschar *n,*h; |
| 259 | |
| 260 | nl=needle->length; |
| 261 | n=needle->character; |
| 262 | hl=haystack->length; |
| 263 | h=haystack->character; |
| 264 | while (nl>0 && hl>0) |
| 265 | { |
| 266 | #if !HAVE_ICONV |
| 267 | if (*n&0x80) return 0; |
| 268 | if (*h&0x80) return 0; |
| 269 | #endif |
| 270 | if (*n!=*h) return 0; |
| 271 | ++n; |
| 272 | ++h; |
| 273 | --nl; |
| 274 | --hl; |
| 275 | } |
| 276 | return (match_prefix ? nl==0 : nl==0 && hl==0); |
| 277 | } |
| 278 | |
| 279 | |
| 280 | /************************************************* |
| 281 | * ASCII case-insensitive string comparison * |
| 282 | *************************************************/ |
| 283 | |
| 284 | /* |
| 285 | Arguments: |
| 286 | needle UTF-8 string to search ... |
| 287 | haystack ... inside the haystack |
| 288 | match_prefix 1 to compare if needle is a prefix of haystack |
| 289 | |
| 290 | Returns: 0 needle not found in haystack |
| 291 | 1 needle found |
| 292 | */ |
| 293 | |
| 294 | static int eq_asciicase(const struct String *needle, |
| 295 | const struct String *haystack, int match_prefix) |
| 296 | { |
| 297 | size_t nl,hl; |
| 298 | const uschar *n,*h; |
| 299 | uschar nc,hc; |
| 300 | |
| 301 | nl=needle->length; |
| 302 | n=needle->character; |
| 303 | hl=haystack->length; |
| 304 | h=haystack->character; |
| 305 | while (nl>0 && hl>0) |
| 306 | { |
| 307 | nc=*n; |
| 308 | hc=*h; |
| 309 | #if !HAVE_ICONV |
| 310 | if (nc&0x80) return 0; |
| 311 | if (hc&0x80) return 0; |
| 312 | #endif |
| 313 | /* tolower depends on the locale and only ASCII case must be insensitive */ |
| 314 | if ((nc>='A' && nc<='Z' ? nc|0x20 : nc) != (hc>='A' && hc<='Z' ? hc|0x20 : hc)) return 0; |
| 315 | ++n; |
| 316 | ++h; |
| 317 | --nl; |
| 318 | --hl; |
| 319 | } |
| 320 | return (match_prefix ? nl==0 : nl==0 && hl==0); |
| 321 | } |
| 322 | |
| 323 | |
| 324 | /************************************************* |
| 325 | * Glob pattern search * |
| 326 | *************************************************/ |
| 327 | |
| 328 | /* |
| 329 | Arguments: |
| 330 | needle pattern to search ... |
| 331 | haystack ... inside the haystack |
| 332 | |
| 333 | Returns: 0 needle not found in haystack |
| 334 | 1 needle found |
| 335 | -1 pattern error |
| 336 | */ |
| 337 | |
| 338 | static int eq_glob(const struct String *needle, |
| 339 | const struct String *haystack, int ascii_caseless) |
| 340 | { |
| 341 | const uschar *n,*h,*nend,*hend; |
| 342 | int may_advance=0; |
| 343 | |
| 344 | n=needle->character; |
| 345 | h=haystack->character; |
| 346 | nend=n+needle->length; |
| 347 | hend=h+haystack->length; |
| 348 | while (n<nend) |
| 349 | { |
| 350 | if (*n=='*') |
| 351 | { |
| 352 | ++n; |
| 353 | may_advance=1; |
| 354 | } |
| 355 | else |
| 356 | { |
| 357 | const uschar *npart,*hpart; |
| 358 | |
| 359 | /* Try to match a non-star part of the needle at the current */ |
| 360 | /* position in the haystack. */ |
| 361 | match_part: |
| 362 | npart=n; |
| 363 | hpart=h; |
| 364 | while (npart<nend && *npart!='*') switch (*npart) |
| 365 | { |
| 366 | case '?': |
| 367 | { |
| 368 | if (hpart==hend) return 0; |
| 369 | /* watch out: Do not match one character, but one UTF8 encoded character */ |
| 370 | if ((*hpart&0xc0)==0xc0) |
| 371 | { |
| 372 | ++hpart; |
| 373 | while (hpart<hend && ((*hpart&0xc0)==0x80)) ++hpart; |
| 374 | } |
| 375 | else |
| 376 | ++hpart; |
| 377 | ++npart; |
| 378 | break; |
| 379 | } |
| 380 | case '\\': |
| 381 | { |
| 382 | ++npart; |
| 383 | if (npart==nend) return -1; |
| 384 | /* FALLTHROUGH */ |
| 385 | } |
| 386 | default: |
| 387 | { |
| 388 | if (hpart==hend) return 0; |
| 389 | /* tolower depends on the locale, but we need ASCII */ |
| 390 | if |
| 391 | ( |
| 392 | #if !HAVE_ICONV |
| 393 | (*hpart&0x80) || (*npart&0x80) || |
| 394 | #endif |
| 395 | ascii_caseless |
| 396 | ? ((*npart>='A' && *npart<='Z' ? *npart|0x20 : *npart) != (*hpart>='A' && *hpart<='Z' ? *hpart|0x20 : *hpart)) |
| 397 | : *hpart!=*npart |
| 398 | ) |
| 399 | { |
| 400 | if (may_advance) |
| 401 | /* string match after a star failed, advance and try again */ |
| 402 | { |
| 403 | ++h; |
| 404 | goto match_part; |
| 405 | } |
| 406 | else return 0; |
| 407 | } |
| 408 | else |
| 409 | { |
| 410 | ++npart; |
| 411 | ++hpart; |
| 412 | }; |
| 413 | } |
| 414 | } |
| 415 | /* at this point, a part was matched successfully */ |
| 416 | if (may_advance && npart==nend && hpart<hend) |
| 417 | /* needle ends, but haystack does not: if there was a star before, advance and try again */ |
| 418 | { |
| 419 | ++h; |
| 420 | goto match_part; |
| 421 | } |
| 422 | h=hpart; |
| 423 | n=npart; |
| 424 | may_advance=0; |
| 425 | } |
| 426 | } |
| 427 | return (h==hend ? 1 : may_advance); |
| 428 | } |
| 429 | |
| 430 | |
| 431 | /************************************************* |
| 432 | * ASCII numeric comparison * |
| 433 | *************************************************/ |
| 434 | |
| 435 | /* |
| 436 | Arguments: |
| 437 | a first numeric string |
| 438 | b second numeric string |
| 439 | relop relational operator |
| 440 | |
| 441 | Returns: 0 not (a relop b) |
| 442 | 1 a relop b |
| 443 | */ |
| 444 | |
| 445 | static int eq_asciinumeric(const struct String *a, |
| 446 | const struct String *b, enum RelOp relop) |
| 447 | { |
| 448 | size_t al,bl; |
| 449 | const uschar *as,*aend,*bs,*bend; |
| 450 | int cmp; |
| 451 | |
| 452 | as=a->character; |
| 453 | aend=a->character+a->length; |
| 454 | bs=b->character; |
| 455 | bend=b->character+b->length; |
| 456 | |
| 457 | while (*as>='0' && *as<='9' && as<aend) ++as; |
| 458 | al=as-a->character; |
| 459 | while (*bs>='0' && *bs<='9' && bs<bend) ++bs; |
| 460 | bl=bs-b->character; |
| 461 | |
| 462 | if (al && bl==0) cmp=-1; |
| 463 | else if (al==0 && bl==0) cmp=0; |
| 464 | else if (al==0 && bl) cmp=1; |
| 465 | else |
| 466 | { |
| 467 | cmp=al-bl; |
| 468 | if (cmp==0) cmp=memcmp(a->character,b->character,al); |
| 469 | } |
| 470 | switch (relop) |
| 471 | { |
| 472 | case LT: return cmp<0; |
| 473 | case LE: return cmp<=0; |
| 474 | case EQ: return cmp==0; |
| 475 | case GE: return cmp>=0; |
| 476 | case GT: return cmp>0; |
| 477 | case NE: return cmp!=0; |
| 478 | } |
| 479 | /*NOTREACHED*/ |
| 480 | return -1; |
| 481 | } |
| 482 | |
| 483 | |
| 484 | /************************************************* |
| 485 | * Compare strings * |
| 486 | *************************************************/ |
| 487 | |
| 488 | /* |
| 489 | Arguments: |
| 490 | needle UTF-8 pattern or string to search ... |
| 491 | haystack ... inside the haystack |
| 492 | co comparator to use |
| 493 | mt match type to use |
| 494 | |
| 495 | Returns: 0 needle not found in haystack |
| 496 | 1 needle found |
| 497 | -1 comparator does not offer matchtype |
| 498 | */ |
| 499 | |
| 500 | static int compare(struct Sieve *filter, const struct String *needle, const struct String *haystack, |
| 501 | enum Comparator co, enum MatchType mt) |
| 502 | { |
| 503 | int r=0; |
| 504 | |
| 505 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
| 506 | (debug_selector & D_filter) != 0) |
| 507 | { |
| 508 | debug_printf("String comparison (match "); |
| 509 | switch (mt) |
| 510 | { |
| 511 | case MATCH_IS: debug_printf(":is"); break; |
| 512 | case MATCH_CONTAINS: debug_printf(":contains"); break; |
| 513 | case MATCH_MATCHES: debug_printf(":matches"); break; |
| 514 | } |
| 515 | debug_printf(", comparison \""); |
| 516 | switch (co) |
| 517 | { |
| 518 | case COMP_OCTET: debug_printf("i;octet"); break; |
| 519 | case COMP_EN_ASCII_CASEMAP: debug_printf("en;ascii-casemap"); break; |
| 520 | case COMP_ASCII_NUMERIC: debug_printf("i;ascii-numeric"); break; |
| 521 | } |
| 522 | debug_printf("\"):\n"); |
| 523 | debug_printf(" Search = %s (%d chars)\n", needle->character,needle->length); |
| 524 | debug_printf(" Inside = %s (%d chars)\n", haystack->character,haystack->length); |
| 525 | } |
| 526 | switch (mt) |
| 527 | { |
| 528 | case MATCH_IS: |
| 529 | { |
| 530 | switch (co) |
| 531 | { |
| 532 | case COMP_OCTET: |
| 533 | { |
| 534 | if (eq_octet(needle,haystack,0)) r=1; |
| 535 | break; |
| 536 | } |
| 537 | case COMP_EN_ASCII_CASEMAP: |
| 538 | { |
| 539 | if (eq_asciicase(needle,haystack,0)) r=1; |
| 540 | break; |
| 541 | } |
| 542 | case COMP_ASCII_NUMERIC: |
| 543 | { |
| 544 | if (!filter->require_iascii_numeric) |
| 545 | { |
| 546 | filter->errmsg=CUS "missing previous require \"comparator-i;ascii-numeric\";"; |
| 547 | return -1; |
| 548 | } |
| 549 | if (eq_asciinumeric(needle,haystack,EQ)) r=1; |
| 550 | break; |
| 551 | } |
| 552 | } |
| 553 | break; |
| 554 | } |
| 555 | case MATCH_CONTAINS: |
| 556 | { |
| 557 | struct String h; |
| 558 | |
| 559 | switch (co) |
| 560 | { |
| 561 | case COMP_OCTET: |
| 562 | { |
| 563 | for (h=*haystack; h.length; ++h.character,--h.length) if (eq_octet(needle,&h,1)) { r=1; break; } |
| 564 | break; |
| 565 | } |
| 566 | case COMP_EN_ASCII_CASEMAP: |
| 567 | { |
| 568 | for (h=*haystack; h.length; ++h.character,--h.length) if (eq_asciicase(needle,&h,1)) { r=1; break; } |
| 569 | break; |
| 570 | } |
| 571 | default: |
| 572 | { |
| 573 | filter->errmsg=CUS "comparator does not offer specified matchtype"; |
| 574 | return -1; |
| 575 | } |
| 576 | } |
| 577 | break; |
| 578 | } |
| 579 | case MATCH_MATCHES: |
| 580 | { |
| 581 | switch (co) |
| 582 | { |
| 583 | case COMP_OCTET: |
| 584 | { |
| 585 | if ((r=eq_glob(needle,haystack,0))==-1) |
| 586 | { |
| 587 | filter->errmsg=CUS "syntactically invalid pattern"; |
| 588 | return -1; |
| 589 | } |
| 590 | break; |
| 591 | } |
| 592 | case COMP_EN_ASCII_CASEMAP: |
| 593 | { |
| 594 | if ((r=eq_glob(needle,haystack,1))==-1) |
| 595 | { |
| 596 | filter->errmsg=CUS "syntactically invalid pattern"; |
| 597 | return -1; |
| 598 | } |
| 599 | break; |
| 600 | } |
| 601 | default: |
| 602 | { |
| 603 | filter->errmsg=CUS "comparator does not offer specified matchtype"; |
| 604 | return -1; |
| 605 | } |
| 606 | } |
| 607 | break; |
| 608 | } |
| 609 | } |
| 610 | if ((filter_test != FTEST_NONE && debug_selector != 0) || |
| 611 | (debug_selector & D_filter) != 0) |
| 612 | debug_printf(" Result %s\n",r?"true":"false"); |
| 613 | return r; |
| 614 | } |
| 615 | |
| 616 | |
| 617 | /************************************************* |
| 618 | * Check header field syntax * |
| 619 | *************************************************/ |
| 620 | |
| 621 | /* |
| 622 | RFC 2822, section 3.6.8 says: |
| 623 | |
| 624 | field-name = 1*ftext |
| 625 | |
| 626 | ftext = %d33-57 / ; Any character except |
| 627 | %d59-126 ; controls, SP, and |
| 628 | ; ":". |
| 629 | |
| 630 | That forbids 8-bit header fields. This implementation accepts them, since |
| 631 | all of Exim is 8-bit clean, so it adds %d128-%d255. |
| 632 | |
| 633 | Arguments: |
| 634 | header header field to quote for suitable use in Exim expansions |
| 635 | |
| 636 | Returns: 0 string is not a valid header field |
| 637 | 1 string is a value header field |
| 638 | */ |
| 639 | |
| 640 | static int is_header(const struct String *header) |
| 641 | { |
| 642 | size_t l; |
| 643 | const uschar *h; |
| 644 | |
| 645 | l=header->length; |
| 646 | h=header->character; |
| 647 | if (l==0) return 0; |
| 648 | while (l) |
| 649 | { |
| 650 | if (((unsigned char)*h)<33 || ((unsigned char)*h)==':' || ((unsigned char)*h)==127) return 0; |
| 651 | else |
| 652 | { |
| 653 | ++h; |
| 654 | --l; |
| 655 | } |
| 656 | } |
| 657 | return 1; |
| 658 | } |
| 659 | |
| 660 | |
| 661 | /************************************************* |
| 662 | * Quote special characters string * |
| 663 | *************************************************/ |
| 664 | |
| 665 | /* |
| 666 | Arguments: |
| 667 | header header field to quote for suitable use in Exim expansions |
| 668 | or as debug output |
| 669 | |
| 670 | Returns: quoted string |
| 671 | */ |
| 672 | |
| 673 | static const uschar *quote(const struct String *header) |
| 674 | { |
| 675 | uschar *quoted=NULL; |
| 676 | int size=0,ptr=0; |
| 677 | size_t l; |
| 678 | const uschar *h; |
| 679 | |
| 680 | l=header->length; |
| 681 | h=header->character; |
| 682 | while (l) |
| 683 | { |
| 684 | switch (*h) |
| 685 | { |
| 686 | case '\0': |
| 687 | { |
| 688 | quoted=string_cat(quoted,&size,&ptr,CUS "\\0",2); |
| 689 | break; |
| 690 | } |
| 691 | case '$': |
| 692 | case '{': |
| 693 | case '}': |
| 694 | { |
| 695 | quoted=string_cat(quoted,&size,&ptr,CUS "\\",1); |
| 696 | } |
| 697 | default: |
| 698 | { |
| 699 | quoted=string_cat(quoted,&size,&ptr,h,1); |
| 700 | } |
| 701 | } |
| 702 | ++h; |
| 703 | --l; |
| 704 | } |
| 705 | quoted=string_cat(quoted,&size,&ptr,CUS "",1); |
| 706 | return quoted; |
| 707 | } |
| 708 | |
| 709 | |
| 710 | /************************************************* |
| 711 | * Add address to list of generated addresses * |
| 712 | *************************************************/ |
| 713 | |
| 714 | /* |
| 715 | According to RFC 3028, duplicate delivery to the same address must |
| 716 | not happen, so the list is first searched for the address. |
| 717 | |
| 718 | Arguments: |
| 719 | generated list of generated addresses |
| 720 | addr new address to add |
| 721 | file address denotes a file |
| 722 | |
| 723 | Returns: nothing |
| 724 | */ |
| 725 | |
| 726 | static void add_addr(address_item **generated, uschar *addr, int file, int maxage, int maxmessages, int maxstorage) |
| 727 | { |
| 728 | address_item *new_addr; |
| 729 | |
| 730 | for (new_addr=*generated; new_addr; new_addr=new_addr->next) |
| 731 | { |
| 732 | if (Ustrcmp(new_addr->address,addr)==0 && (file ? testflag(new_addr, af_pfr|af_file) : 1)) |
| 733 | { |
| 734 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
| 735 | { |
| 736 | debug_printf("Repeated %s `%s' ignored.\n",file ? "fileinto" : "redirect", addr); |
| 737 | } |
| 738 | return; |
| 739 | } |
| 740 | } |
| 741 | |
| 742 | if ((filter_test != FTEST_NONE && debug_selector != 0) || (debug_selector & D_filter) != 0) |
| 743 | { |
| 744 | debug_printf("%s `%s'\n",file ? "fileinto" : "redirect", addr); |
| 745 | } |
| 746 | new_addr=deliver_make_addr(addr,TRUE); |
| 747 | if (file) |
| 748 | { |
| 749 | setflag(new_addr, af_pfr|af_file); |
| 750 | new_addr->mode = 0; |
| 751 | } |
| 752 | new_addr->p.errors_address = NULL; |
| 753 | new_addr->next = *generated; |
| 754 | *generated = new_addr; |
| 755 | } |
| 756 | |
| 757 | |
| 758 | /************************************************* |
| 759 | * Return decoded header field * |
| 760 | *************************************************/ |
| 761 | |
| 762 | /* |
| 763 | Arguments: |
| 764 | value returned value of the field |
| 765 | header name of the header field |
| 766 | |
| 767 | Returns: nothing The expanded string is empty |
| 768 | in case there is no such header |
| 769 | */ |
| 770 | |
| 771 | static void expand_header(struct String *value, const struct String *header) |
| 772 | { |
| 773 | uschar *s,*r,*t; |
| 774 | uschar *errmsg; |
| 775 | |
| 776 | value->length=0; |
| 777 | value->character=(uschar*)0; |
| 778 | |
| 779 | t=r=s=expand_string(string_sprintf("$rheader_%s",quote(header))); |
| 780 | while (*r==' ') ++r; |
| 781 | while (*r) |
| 782 | { |
| 783 | if (*r=='\n') |
| 784 | { |
| 785 | ++r; |
| 786 | while (*r==' ' || *r=='\t') ++r; |
| 787 | if (*r) *t++=' '; |
| 788 | } |
| 789 | else |
| 790 | *t++=*r++; |
| 791 | } |
| 792 | *t++='\0'; |
| 793 | value->character=rfc2047_decode(s,TRUE,US"utf-8",'\0',&value->length,&errmsg); |
| 794 | } |
| 795 | |
| 796 | |
| 797 | /************************************************* |
| 798 | * Parse remaining hash comment * |
| 799 | *************************************************/ |
| 800 | |
| 801 | /* |
| 802 | Token definition: |
| 803 | Comment up to terminating CRLF |
| 804 | |
| 805 | Arguments: |
| 806 | filter points to the Sieve filter including its state |
| 807 | |
| 808 | Returns: 1 success |
| 809 | -1 syntax error |
| 810 | */ |
| 811 | |
| 812 | static int parse_hashcomment(struct Sieve *filter) |
| 813 | { |
| 814 | ++filter->pc; |
| 815 | while (*filter->pc) |
| 816 | { |
| 817 | #ifdef RFC_EOL |
| 818 | if (*filter->pc=='\r' && *(filter->pc+1)=='\n') |
| 819 | #else |
| 820 | if (*filter->pc=='\n') |
| 821 | #endif |
| 822 | { |
| 823 | #ifdef RFC_EOL |
| 824 | filter->pc+=2; |
| 825 | #else |
| 826 | ++filter->pc; |
| 827 | #endif |
| 828 | ++filter->line; |
| 829 | return 1; |
| 830 | } |
| 831 | else ++filter->pc; |
| 832 | } |
| 833 | filter->errmsg=CUS "missing end of comment"; |
| 834 | return -1; |
| 835 | } |
| 836 | |
| 837 | |
| 838 | /************************************************* |
| 839 | * Parse remaining C-style comment * |
| 840 | *************************************************/ |
| 841 | |
| 842 | /* |
| 843 | Token definition: |
| 844 | Everything up to star slash |
| 845 | |
| 846 | Arguments: |
| 847 | filter points to the Sieve filter including its state |
| 848 | |
| 849 | Returns: 1 success |
| 850 | -1 syntax error |
| 851 | */ |
| 852 | |
| 853 | static int parse_comment(struct Sieve *filter) |
| 854 | { |
| 855 | filter->pc+=2; |
| 856 | while (*filter->pc) |
| 857 | { |
| 858 | if (*filter->pc=='*' && *(filter->pc+1)=='/') |
| 859 | { |
| 860 | filter->pc+=2; |
| 861 | return 1; |
| 862 | } |
| 863 | else ++filter->pc; |
| 864 | } |
| 865 | filter->errmsg=CUS "missing end of comment"; |
| 866 | return -1; |
| 867 | } |
| 868 | |
| 869 | |
| 870 | /************************************************* |
| 871 | * Parse optional white space * |
| 872 | *************************************************/ |
| 873 | |
| 874 | /* |
| 875 | Token definition: |
| 876 | Spaces, tabs, CRLFs, hash comments or C-style comments |
| 877 | |
| 878 | Arguments: |
| 879 | filter points to the Sieve filter including its state |
| 880 | |
| 881 | Returns: 1 success |
| 882 | -1 syntax error |
| 883 | */ |
| 884 | |
| 885 | static int parse_white(struct Sieve *filter) |
| 886 | { |
| 887 | while (*filter->pc) |
| 888 | { |
| 889 | if (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc; |
| 890 | #ifdef RFC_EOL |
| 891 | else if (*filter->pc=='\r' && *(filter->pc+1)=='\n') |
| 892 | #else |
| 893 | else if (*filter->pc=='\n') |
| 894 | #endif |
| 895 | { |
| 896 | #ifdef RFC_EOL |
| 897 | filter->pc+=2; |
| 898 | #else |
| 899 | ++filter->pc; |
| 900 | #endif |
| 901 | ++filter->line; |
| 902 | } |
| 903 | else if (*filter->pc=='#') |
| 904 | { |
| 905 | if (parse_hashcomment(filter)==-1) return -1; |
| 906 | } |
| 907 | else if (*filter->pc=='/' && *(filter->pc+1)=='*') |
| 908 | { |
| 909 | if (parse_comment(filter)==-1) return -1; |
| 910 | } |
| 911 | else break; |
| 912 | } |
| 913 | return 1; |
| 914 | } |
| 915 | |
| 916 | |
| 917 | /************************************************* |
| 918 | * Parse a optional string * |
| 919 | *************************************************/ |
| 920 | |
| 921 | /* |
| 922 | Token definition: |
| 923 | quoted-string = DQUOTE *CHAR DQUOTE |
| 924 | ;; in general, \ CHAR inside a string maps to CHAR |
| 925 | ;; so \" maps to " and \\ maps to \ |
| 926 | ;; note that newlines and other characters are all allowed |
| 927 | ;; in strings |
| 928 | |
| 929 | multi-line = "text:" *(SP / HTAB) (hash-comment / CRLF) |
| 930 | *(multi-line-literal / multi-line-dotstuff) |
| 931 | "." CRLF |
| 932 | multi-line-literal = [CHAR-NOT-DOT *CHAR-NOT-CRLF] CRLF |
| 933 | multi-line-dotstuff = "." 1*CHAR-NOT-CRLF CRLF |
| 934 | ;; A line containing only "." ends the multi-line. |
| 935 | ;; Remove a leading '.' if followed by another '.'. |
| 936 | string = quoted-string / multi-line |
| 937 | |
| 938 | Arguments: |
| 939 | filter points to the Sieve filter including its state |
| 940 | id specifies identifier to match |
| 941 | |
| 942 | Returns: 1 success |
| 943 | -1 syntax error |
| 944 | 0 identifier not matched |
| 945 | */ |
| 946 | |
| 947 | static int parse_string(struct Sieve *filter, struct String *data) |
| 948 | { |
| 949 | int dataCapacity=0; |
| 950 | |
| 951 | data->length=0; |
| 952 | data->character=(uschar*)0; |
| 953 | if (*filter->pc=='"') /* quoted string */ |
| 954 | { |
| 955 | ++filter->pc; |
| 956 | while (*filter->pc) |
| 957 | { |
| 958 | if (*filter->pc=='"') /* end of string */ |
| 959 | { |
| 960 | int foo=data->length; |
| 961 | |
| 962 | ++filter->pc; |
| 963 | data->character=string_cat(data->character,&dataCapacity,&foo,CUS "",1); |
| 964 | return 1; |
| 965 | } |
| 966 | else if (*filter->pc=='\\' && *(filter->pc+1)) /* quoted character */ |
| 967 | { |
| 968 | if (*(filter->pc+1)=='0') data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); |
| 969 | else data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc+1,1); |
| 970 | filter->pc+=2; |
| 971 | } |
| 972 | else /* regular character */ |
| 973 | { |
| 974 | data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1); |
| 975 | filter->pc++; |
| 976 | } |
| 977 | } |
| 978 | filter->errmsg=CUS "missing end of string"; |
| 979 | return -1; |
| 980 | } |
| 981 | else if (Ustrncmp(filter->pc,CUS "text:",5)==0) /* multiline string */ |
| 982 | { |
| 983 | filter->pc+=5; |
| 984 | /* skip optional white space followed by hashed comment or CRLF */ |
| 985 | while (*filter->pc==' ' || *filter->pc=='\t') ++filter->pc; |
| 986 | if (*filter->pc=='#') |
| 987 | { |
| 988 | if (parse_hashcomment(filter)==-1) return -1; |
| 989 | } |
| 990 | #ifdef RFC_EOL |
| 991 | else if (*filter->pc=='\r' && *(filter->pc+1)=='\n') |
| 992 | #else |
| 993 | else if (*filter->pc=='\n') |
| 994 | #endif |
| 995 | { |
| 996 | #ifdef RFC_EOL |
| 997 | filter->pc+=2; |
| 998 | #else |
| 999 | ++filter->pc; |
| 1000 | #endif |
| 1001 | ++filter->line; |
| 1002 | } |
| 1003 | else |
| 1004 | { |
| 1005 | filter->errmsg=CUS "syntax error"; |
| 1006 | return -1; |
| 1007 | } |
| 1008 | while (*filter->pc) |
| 1009 | { |
| 1010 | #ifdef RFC_EOL |
| 1011 | if (*filter->pc=='\r' && *(filter->pc+1)=='\n') /* end of line */ |
| 1012 | #else |
| 1013 | if (*filter->pc=='\n') /* end of line */ |
| 1014 | #endif |
| 1015 | { |
| 1016 | data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "\r\n",2); |
| 1017 | #ifdef RFC_EOL |
| 1018 | filter->pc+=2; |
| 1019 | #else |
| 1020 | ++filter->pc; |
| 1021 | #endif |
| 1022 | ++filter->line; |
| 1023 | #ifdef RFC_EOL |
| 1024 | if (*filter->pc=='.' && *(filter->pc+1)=='\r' && *(filter->pc+2)=='\n') /* end of string */ |
| 1025 | #else |
| 1026 | if (*filter->pc=='.' && *(filter->pc+1)=='\n') /* end of string */ |
| 1027 | #endif |
| 1028 | { |
| 1029 | data->character=string_cat(data->character,&dataCapacity,&data->length,CUS "",1); |
| 1030 | #ifdef RFC_EOL |
| 1031 | filter->pc+=3; |
| 1032 | #else |
| 1033 | filter->pc+=2; |
| 1034 | #endif |
| 1035 | ++filter->line; |
| 1036 | return 1; |
| 1037 | } |
| 1038 | else if (*filter->pc=='.' && *(filter->pc+1)=='.') /* remove dot stuffing */ |
| 1039 | { |
| 1040 | data->character=string_cat(data->character,&dataCapacity,&data->length,CUS ".",1); |
| 1041 | filter->pc+=2; |
| 1042 | } |
| 1043 | } |
| 1044 | else /* regular character */ |
| 1045 | { |
| 1046 | data->character=string_cat(data->character,&dataCapacity,&data->length,filter->pc,1); |
| 1047 | filter->pc++; |
| 1048 | } |
| 1049 | } |
| 1050 | filter->errmsg=CUS "missing end of multi line string"; |
| 1051 | return -1; |
| 1052 | } |
| 1053 | else return 0; |
| 1054 | } |
| 1055 | |
| 1056 | |
| 1057 | /************************************************* |
| 1058 | * Parse a specific identifier * |
| 1059 | *************************************************/ |
| 1060 | |
| 1061 | /* |
| 1062 | Token definition: |
| 1063 | identifier = (ALPHA / "_") *(ALPHA DIGIT "_") |
| 1064 | |
| 1065 | Arguments: |
| 1066 | filter points to the Sieve filter including its state |
| 1067 | id specifies identifier to match |
| 1068 | |
| 1069 | Returns: 1 success |
| 1070 | 0 identifier not matched |
| 1071 | */ |
| 1072 | |
| 1073 | static int parse_identifier(struct Sieve *filter, const uschar *id) |
| 1074 | { |
| 1075 | size_t idlen=Ustrlen(id); |
| 1076 | |
| 1077 | if (Ustrncmp(filter->pc,id,idlen)==0) |
| 1078 | { |
| 1079 | uschar next=filter->pc[idlen]; |
| 1080 | |
| 1081 | if ((next>='A' && next<='Z') || (next>='a' && next<='z') || next=='_' || (next>='0' && next<='9')) return 0; |
| 1082 | filter->pc+=idlen; |
| 1083 | return 1; |
| 1084 | } |
| 1085 | else return 0; |
| 1086 | } |
| 1087 | |
| 1088 | |
| 1089 | /************************************************* |
| 1090 | * Parse a number * |
| 1091 | *************************************************/ |
| 1092 | |
| 1093 | /* |
| 1094 | Token definition: |
| 1095 | number = 1*DIGIT [QUANTIFIER] |
| 1096 | QUANTIFIER = "K" / "M" / "G" |
| 1097 | |
| 1098 | Arguments: |
| 1099 | filter points to the Sieve filter including its state |
| 1100 | data returns value |
| 1101 | |
| 1102 | Returns: 1 success |
| 1103 | -1 no string list found |
| 1104 | */ |
| 1105 | |
| 1106 | static int parse_number(struct Sieve *filter, unsigned long *data) |
| 1107 | { |
| 1108 | unsigned long d,u; |
| 1109 | |
| 1110 | if (*filter->pc>='0' && *filter->pc<='9') |
| 1111 | { |
| 1112 | uschar *e; |
| 1113 | |
| 1114 | errno=0; |
| 1115 | d=Ustrtoul(filter->pc,&e,10); |
| 1116 | if (errno==ERANGE) |
| 1117 | { |
| 1118 | filter->errmsg=CUstrerror(ERANGE); |
| 1119 | return -1; |
| 1120 | } |
| 1121 | filter->pc=e; |
| 1122 | u=1; |
| 1123 | if (*filter->pc=='K') { u=1024; ++filter->pc; } |
| 1124 | else if (*filter->pc=='M') { u=1024*1024; ++filter->pc; } |
| 1125 | else if (*filter->pc=='G') { u=1024*1024*1024; ++filter->pc; } |
| 1126 | if (d>(ULONG_MAX/u)) |
| 1127 | { |
| 1128 | filter->errmsg=CUstrerror(ERANGE); |
| 1129 | return -1; |
| 1130 | } |
| 1131 | d*=u; |
| 1132 | *data=d; |
| 1133 | return 1; |
| 1134 | } |
| 1135 | else |
| 1136 | { |
| 1137 | filter->errmsg=CUS "missing number"; |
| 1138 | return -1; |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | |
| 1143 | /************************************************* |
| 1144 | * Parse a string list * |
| 1145 | *************************************************/ |
| 1146 | |
| 1147 | /* |
| 1148 | Grammar: |
| 1149 | string-list = "[" string *("," string) "]" / string |
| 1150 | |
| 1151 | Arguments: |
| 1152 | filter points to the Sieve filter including its state |
| 1153 | data returns string list |
| 1154 | |
| 1155 | Returns: 1 success |
| 1156 | -1 no string list found |
| 1157 | */ |
| 1158 | |
| 1159 | static int parse_stringlist(struct Sieve *filter, struct String **data) |
| 1160 | { |
| 1161 | const uschar *orig=filter->pc; |
| 1162 | int dataCapacity=0; |
| 1163 | int dataLength=0; |
| 1164 | struct String *d=(struct String*)0; |
| 1165 | int m; |
| 1166 | |
| 1167 | if (*filter->pc=='[') /* string list */ |
| 1168 | { |
| 1169 | ++filter->pc; |
| 1170 | for (;;) |
| 1171 | { |
| 1172 | if (parse_white(filter)==-1) goto error; |
| 1173 | if ((dataLength+1)>=dataCapacity) /* increase buffer */ |
| 1174 | { |
| 1175 | struct String *new; |
| 1176 | int newCapacity; /* Don't amalgamate with next line; some compilers grumble */ |
| 1177 | newCapacity=dataCapacity?(dataCapacity*=2):(dataCapacity=4); |
| 1178 | if ((new=(struct String*)store_get(sizeof(struct String)*newCapacity))==(struct String*)0) |
| 1179 | { |
| 1180 | filter->errmsg=CUstrerror(errno); |
| 1181 | goto error; |
| 1182 | } |
| 1183 | if (d) memcpy(new,d,sizeof(struct String)*dataLength); |
| 1184 | d=new; |
| 1185 | dataCapacity=newCapacity; |
| 1186 | } |
| 1187 | m=parse_string(filter,&d[dataLength]); |
| 1188 | if (m==0) |
| 1189 | { |
| 1190 | if (dataLength==0) break; |
| 1191 | else |
| 1192 | { |
| 1193 | filter->errmsg=CUS "missing string"; |
| 1194 | goto error; |
| 1195 | } |
| 1196 | } |
| 1197 | else if (m==-1) goto error; |
| 1198 | else ++dataLength; |
| 1199 | if (parse_white(filter)==-1) goto error; |
| 1200 | if (*filter->pc==',') ++filter->pc; |
| 1201 | else break; |
| 1202 | } |
| 1203 | if (*filter->pc==']') |
| 1204 | { |
| 1205 | d[dataLength].character=(uschar*)0; |
| 1206 | d[dataLength].length=-1; |
| 1207 | ++filter->pc; |
| 1208 | *data=d; |
| 1209 | return 1; |
| 1210 | } |
| 1211 | else |
| 1212 | { |
| 1213 | filter->errmsg=CUS "missing closing bracket"; |
| 1214 | goto error; |
| 1215 | } |
| 1216 | } |
| 1217 | else /* single string */ |
| 1218 | { |
| 1219 | if ((d=store_get(sizeof(struct String)*2))==(struct String*)0) |
| 1220 | { |
| 1221 | return -1; |
| 1222 | } |
| 1223 | m=parse_string(filter,&d[0]); |
| 1224 | if (m==-1) |
| 1225 | { |
| 1226 | return -1; |
| 1227 | } |
| 1228 | else if (m==0) |
| 1229 | { |
| 1230 | filter->pc=orig; |
| 1231 | return 0; |
| 1232 | } |
| 1233 | else |
| 1234 | { |
| 1235 | d[1].character=(uschar*)0; |
| 1236 | d[1].length=-1; |
| 1237 | *data=d; |
| 1238 | return 1; |
| 1239 | } |
| 1240 | } |
| 1241 | error: |
| 1242 | filter->errmsg=CUS "missing string list"; |
| 1243 | return -1; |
| 1244 | } |
| 1245 | |
| 1246 | |
| 1247 | /************************************************* |
| 1248 | * Parse an optional address part specifier * |
| 1249 | *************************************************/ |
| 1250 | |
| 1251 | /* |
| 1252 | Grammar: |
| 1253 | address-part = ":localpart" / ":domain" / ":all" |
| 1254 | address-part =/ ":user" / ":detail" |
| 1255 | |
| 1256 | Arguments: |
| 1257 | filter points to the Sieve filter including its state |
| 1258 | a returns address part specified |
| 1259 | |
| 1260 | Returns: 1 success |
| 1261 | 0 no comparator found |
| 1262 | -1 syntax error |
| 1263 | */ |
| 1264 | |
| 1265 | static int parse_addresspart(struct Sieve *filter, enum AddressPart *a) |
| 1266 | { |
| 1267 | #ifdef SUBADDRESS |
| 1268 | if (parse_identifier(filter,CUS ":user")==1) |
| 1269 | { |
| 1270 | if (!filter->require_subaddress) |
| 1271 | { |
| 1272 | filter->errmsg=CUS "missing previous require \"subaddress\";"; |
| 1273 | return -1; |
| 1274 | } |
| 1275 | *a=ADDRPART_USER; |
| 1276 | return 1; |
| 1277 | } |
| 1278 | else if (parse_identifier(filter,CUS ":detail")==1) |
| 1279 | { |
| 1280 | if (!filter->require_subaddress) |
| 1281 | { |
| 1282 | filter->errmsg=CUS "missing previous require \"subaddress\";"; |
| 1283 | return -1; |
| 1284 | } |
| 1285 | *a=ADDRPART_DETAIL; |
| 1286 | return 1; |
| 1287 | } |
| 1288 | else |
| 1289 | #endif |
| 1290 | if (parse_identifier(filter,CUS ":localpart")==1) |
| 1291 | { |
| 1292 | *a=ADDRPART_LOCALPART; |
| 1293 | return 1; |
| 1294 | } |
| 1295 | else if (parse_identifier(filter,CUS ":domain")==1) |
| 1296 | { |
| 1297 | *a=ADDRPART_DOMAIN; |
| 1298 | return 1; |
| 1299 | } |
| 1300 | else if (parse_identifier(filter,CUS ":all")==1) |
| 1301 | { |
| 1302 | *a=ADDRPART_ALL; |
| 1303 | return 1; |
| 1304 | } |
| 1305 | else return 0; |
| 1306 | } |
| 1307 | |
| 1308 | |
| 1309 | /************************************************* |
| 1310 | * Parse an optional comparator * |
| 1311 | *************************************************/ |
| 1312 | |
| 1313 | /* |
| 1314 | Grammar: |
| 1315 | comparator = ":comparator" <comparator-name: string> |
| 1316 | |
| 1317 | Arguments: |
| 1318 | filter points to the Sieve filter including its state |
| 1319 | c returns comparator |
| 1320 | |
| 1321 | Returns: 1 success |
| 1322 | 0 no comparator found |
| 1323 | -1 incomplete comparator found |
| 1324 | */ |
| 1325 | |
| 1326 | static int parse_comparator(struct Sieve *filter, enum Comparator *c) |
| 1327 | { |
| 1328 | struct String comparator_name; |
| 1329 | |
| 1330 | if (parse_identifier(filter,CUS ":comparator")==0) return 0; |
| 1331 | if (parse_white(filter)==-1) return -1; |
| 1332 | switch (parse_string(filter,&comparator_name)) |
| 1333 | { |
| 1334 | case -1: return -1; |
| 1335 | case 0: |
| 1336 | { |
| 1337 | filter->errmsg=CUS "missing comparator"; |
| 1338 | return -1; |
| 1339 | } |
| 1340 | default: |
| 1341 | { |
| 1342 | int match; |
| 1343 | |
| 1344 | if (eq_asciicase(&comparator_name,&str_ioctet,0)) |
| 1345 | { |
| 1346 | *c=COMP_OCTET; |
| 1347 | match=1; |
| 1348 | } |
| 1349 | else if (eq_asciicase(&comparator_name,&str_iascii_casemap,0)) |
| 1350 | { |
| 1351 | *c=COMP_EN_ASCII_CASEMAP; |
| 1352 | match=1; |
| 1353 | } |
| 1354 | else if (eq_asciicase(&comparator_name,&str_enascii_casemap,0)) |
| 1355 | { |
| 1356 | *c=COMP_EN_ASCII_CASEMAP; |
| 1357 | match=1; |
| 1358 | } |
| 1359 | else if (eq_asciicase(&comparator_name,&str_iascii_numeric,0)) |
| 1360 | { |
| 1361 | *c=COMP_ASCII_NUMERIC; |
| 1362 | match=1; |
| 1363 | } |
| 1364 | else |
| 1365 | { |
| 1366 | filter->errmsg=CUS "invalid comparator"; |
| 1367 | match=-1; |
| 1368 | } |
| 1369 | return match; |
| 1370 | } |
| 1371 | } |
| 1372 | } |
| 1373 | |
| 1374 | |
| 1375 | /************************************************* |
| 1376 | * Parse an optional match type * |
| 1377 | *************************************************/ |
| 1378 | |
| 1379 | /* |
| 1380 | Grammar: |
| 1381 | match-type = ":is" / ":contains" / ":matches" |
| 1382 | |
| 1383 | Arguments: |
| 1384 | filter points to the Sieve filter including its state |
| 1385 | m returns match type |
| 1386 | |
| 1387 | Returns: 1 success |
| 1388 | 0 no match type found |
| 1389 | */ |
| 1390 | |
| 1391 | static int parse_matchtype(struct Sieve *filter, enum MatchType *m) |
| 1392 | { |
| 1393 | if (parse_identifier(filter,CUS ":is")==1) |
| 1394 | { |
| 1395 | *m=MATCH_IS; |
| 1396 | return 1; |
| 1397 | } |
| 1398 | else if (parse_identifier(filter,CUS ":contains")==1) |
| 1399 | { |
| 1400 | *m=MATCH_CONTAINS; |
| 1401 | return 1; |
| 1402 | } |
| 1403 | else if (parse_identifier(filter,CUS ":matches")==1) |
| 1404 | { |
| 1405 | *m=MATCH_MATCHES; |
| 1406 | return 1; |
| 1407 | } |
| 1408 | else return 0; |
| 1409 | } |
| 1410 | |
| 1411 | |
| 1412 | /************************************************* |
| 1413 | * Parse and interpret an optional test list * |
| 1414 | *************************************************/ |
| 1415 | |
| 1416 | /* |
| 1417 | Grammar: |
| 1418 | test-list = "(" test *("," test) ")" |
| 1419 | |
| 1420 | Arguments: |
| 1421 | filter points to the Sieve filter including its state |
| 1422 | n total number of tests |
| 1423 | true number of passed tests |
| 1424 | exec Execute parsed statements |
| 1425 | |
| 1426 | Returns: 1 success |
| 1427 | 0 no test list found |
| 1428 | -1 syntax or execution error |
| 1429 | */ |
| 1430 | |
| 1431 | static int parse_testlist(struct Sieve *filter, int *n, int *true, int exec) |
| 1432 | { |
| 1433 | if (parse_white(filter)==-1) return -1; |
| 1434 | if (*filter->pc=='(') |
| 1435 | { |
| 1436 | ++filter->pc; |
| 1437 | *n=0; |
| 1438 | *true=0; |
| 1439 | for (;;) |
| 1440 | { |
| 1441 | int cond; |
| 1442 | |
| 1443 | switch (parse_test(filter,&cond,exec)) |
| 1444 | { |
| 1445 | case -1: return -1; |
| 1446 | case 0: filter->errmsg=CUS "missing test"; return -1; |
| 1447 | default: ++*n; if (cond) ++*true; break; |
| 1448 | } |
| 1449 | if (parse_white(filter)==-1) return -1; |
| 1450 | if (*filter->pc==',') ++filter->pc; |
| 1451 | else break; |
| 1452 | } |
| 1453 | if (*filter->pc==')') |
| 1454 | { |
| 1455 | ++filter->pc; |
| 1456 | return 1; |
| 1457 | } |
| 1458 | else |
| 1459 | { |
| 1460 | filter->errmsg=CUS "missing closing paren"; |
| 1461 | return -1; |
| 1462 | } |
| 1463 | } |
| 1464 | else return 0; |
| 1465 | } |
| 1466 | |
| 1467 | |
| 1468 | /************************************************* |
| 1469 | * Parse and interpret an optional test * |
| 1470 | *************************************************/ |
| 1471 | |
| 1472 | /* |
| 1473 | Arguments: |
| 1474 | filter points to the Sieve filter including its state |
| 1475 | cond returned condition status |
| 1476 | exec Execute parsed statements |
| 1477 | |
| 1478 | Returns: 1 success |
| 1479 | 0 no test found |
| 1480 | -1 syntax or execution error |
| 1481 | */ |
| 1482 | |
| 1483 | static int parse_test(struct Sieve *filter, int *cond, int exec) |
| 1484 | { |
| 1485 | if (parse_white(filter)==-1) return -1; |
| 1486 | if (parse_identifier(filter,CUS "address")) |
| 1487 | { |
| 1488 | /* |
| 1489 | address-test = "address" { [address-part] [comparator] [match-type] } |
| 1490 | <header-list: string-list> <key-list: string-list> |
| 1491 | |
| 1492 | header-list From, To, Cc, Bcc, Sender, Resent-From, Resent-To |
| 1493 | */ |
| 1494 | |
| 1495 | enum AddressPart addressPart=ADDRPART_ALL; |
| 1496 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
| 1497 | enum MatchType matchType=MATCH_IS; |
| 1498 | struct String *hdr,*h,*key,*k; |
| 1499 | int m; |
| 1500 | int ap=0,co=0,mt=0; |
| 1501 | |
| 1502 | for (;;) |
| 1503 | { |
| 1504 | if (parse_white(filter)==-1) return -1; |
| 1505 | if ((m=parse_addresspart(filter,&addressPart))!=0) |
| 1506 | { |
| 1507 | if (m==-1) return -1; |
| 1508 | if (ap) |
| 1509 | { |
| 1510 | filter->errmsg=CUS "address part already specified"; |
| 1511 | return -1; |
| 1512 | } |
| 1513 | else ap=1; |
| 1514 | } |
| 1515 | else if ((m=parse_comparator(filter,&comparator))!=0) |
| 1516 | { |
| 1517 | if (m==-1) return -1; |
| 1518 | if (co) |
| 1519 | { |
| 1520 | filter->errmsg=CUS "comparator already specified"; |
| 1521 | return -1; |
| 1522 | } |
| 1523 | else co=1; |
| 1524 | } |
| 1525 | else if ((m=parse_matchtype(filter,&matchType))!=0) |
| 1526 | { |
| 1527 | if (m==-1) return -1; |
| 1528 | if (mt) |
| 1529 | { |
| 1530 | filter->errmsg=CUS "match type already specified"; |
| 1531 | return -1; |
| 1532 | } |
| 1533 | else mt=1; |
| 1534 | } |
| 1535 | else break; |
| 1536 | } |
| 1537 | if (parse_white(filter)==-1) return -1; |
| 1538 | if ((m=parse_stringlist(filter,&hdr))!=1) |
| 1539 | { |
| 1540 | if (m==0) filter->errmsg=CUS "header string list expected"; |
| 1541 | return -1; |
| 1542 | } |
| 1543 | if (parse_white(filter)==-1) return -1; |
| 1544 | if ((m=parse_stringlist(filter,&key))!=1) |
| 1545 | { |
| 1546 | if (m==0) filter->errmsg=CUS "key string list expected"; |
| 1547 | return -1; |
| 1548 | } |
| 1549 | *cond=0; |
| 1550 | for (h=hdr; h->length!=-1 && !*cond; ++h) |
| 1551 | { |
| 1552 | uschar *header_value=(uschar*)0,*extracted_addr,*end_addr; |
| 1553 | |
| 1554 | if |
| 1555 | ( |
| 1556 | !eq_asciicase(h,&str_from,0) |
| 1557 | && !eq_asciicase(h,&str_to,0) |
| 1558 | && !eq_asciicase(h,&str_cc,0) |
| 1559 | && !eq_asciicase(h,&str_bcc,0) |
| 1560 | && !eq_asciicase(h,&str_sender,0) |
| 1561 | && !eq_asciicase(h,&str_resent_from,0) |
| 1562 | && !eq_asciicase(h,&str_resent_to,0) |
| 1563 | ) |
| 1564 | { |
| 1565 | filter->errmsg=CUS "invalid header field"; |
| 1566 | return -1; |
| 1567 | } |
| 1568 | if (exec) |
| 1569 | { |
| 1570 | /* We are only interested in addresses below, so no MIME decoding */ |
| 1571 | header_value=expand_string(string_sprintf("$rheader_%s",quote(h))); |
| 1572 | if (header_value == NULL) |
| 1573 | { |
| 1574 | filter->errmsg=CUS "header string expansion failed"; |
| 1575 | return -1; |
| 1576 | } |
| 1577 | parse_allow_group = TRUE; |
| 1578 | while (*header_value && !*cond) |
| 1579 | { |
| 1580 | uschar *error; |
| 1581 | int start, end, domain; |
| 1582 | int saveend; |
| 1583 | uschar *part=NULL; |
| 1584 | |
| 1585 | end_addr = parse_find_address_end(header_value, FALSE); |
| 1586 | saveend = *end_addr; |
| 1587 | *end_addr = 0; |
| 1588 | extracted_addr = parse_extract_address(header_value, &error, &start, &end, &domain, FALSE); |
| 1589 | |
| 1590 | if (extracted_addr) switch (addressPart) |
| 1591 | { |
| 1592 | case ADDRPART_ALL: part=extracted_addr; break; |
| 1593 | #ifdef SUBADDRESS |
| 1594 | case ADDRPART_USER: |
| 1595 | #endif |
| 1596 | case ADDRPART_LOCALPART: part=extracted_addr; part[domain-1]='\0'; break; |
| 1597 | case ADDRPART_DOMAIN: part=extracted_addr+domain; break; |
| 1598 | #ifdef SUBADDRESS |
| 1599 | case ADDRPART_DETAIL: part=NULL; break; |
| 1600 | #endif |
| 1601 | } |
| 1602 | |
| 1603 | *end_addr = saveend; |
| 1604 | if (part) |
| 1605 | { |
| 1606 | for (k=key; k->length!=-1; ++k) |
| 1607 | { |
| 1608 | struct String partStr; |
| 1609 | |
| 1610 | partStr.character=part; |
| 1611 | partStr.length=Ustrlen(part); |
| 1612 | if (extracted_addr) |
| 1613 | { |
| 1614 | *cond=compare(filter,k,&partStr,comparator,matchType); |
| 1615 | if (*cond==-1) return -1; |
| 1616 | if (*cond) break; |
| 1617 | } |
| 1618 | } |
| 1619 | } |
| 1620 | if (saveend == 0) break; |
| 1621 | header_value = end_addr + 1; |
| 1622 | } |
| 1623 | } |
| 1624 | } |
| 1625 | return 1; |
| 1626 | } |
| 1627 | else if (parse_identifier(filter,CUS "allof")) |
| 1628 | { |
| 1629 | /* |
| 1630 | allof-test = "allof" <tests: test-list> |
| 1631 | */ |
| 1632 | |
| 1633 | int n,true; |
| 1634 | |
| 1635 | switch (parse_testlist(filter,&n,&true,exec)) |
| 1636 | { |
| 1637 | case -1: return -1; |
| 1638 | case 0: filter->errmsg=CUS "missing test list"; return -1; |
| 1639 | default: *cond=(n==true); return 1; |
| 1640 | } |
| 1641 | } |
| 1642 | else if (parse_identifier(filter,CUS "anyof")) |
| 1643 | { |
| 1644 | /* |
| 1645 | anyof-test = "anyof" <tests: test-list> |
| 1646 | */ |
| 1647 | |
| 1648 | int n,true; |
| 1649 | |
| 1650 | switch (parse_testlist(filter,&n,&true,exec)) |
| 1651 | { |
| 1652 | case -1: return -1; |
| 1653 | case 0: filter->errmsg=CUS "missing test list"; return -1; |
| 1654 | default: *cond=(true>0); return 1; |
| 1655 | } |
| 1656 | } |
| 1657 | else if (parse_identifier(filter,CUS "exists")) |
| 1658 | { |
| 1659 | /* |
| 1660 | exists-test = "exists" <header-names: string-list> |
| 1661 | */ |
| 1662 | |
| 1663 | struct String *hdr,*h; |
| 1664 | int m; |
| 1665 | |
| 1666 | if (parse_white(filter)==-1) return -1; |
| 1667 | if ((m=parse_stringlist(filter,&hdr))!=1) |
| 1668 | { |
| 1669 | if (m==0) filter->errmsg=CUS "header string list expected"; |
| 1670 | return -1; |
| 1671 | } |
| 1672 | if (exec) |
| 1673 | { |
| 1674 | *cond=1; |
| 1675 | for (h=hdr; h->length!=-1 && *cond; ++h) |
| 1676 | { |
| 1677 | uschar *header_def; |
| 1678 | |
| 1679 | header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h))); |
| 1680 | if (header_def == NULL) |
| 1681 | { |
| 1682 | filter->errmsg=CUS "header string expansion failed"; |
| 1683 | return -1; |
| 1684 | } |
| 1685 | if (Ustrcmp(header_def,"false")==0) *cond=0; |
| 1686 | } |
| 1687 | } |
| 1688 | return 1; |
| 1689 | } |
| 1690 | else if (parse_identifier(filter,CUS "false")) |
| 1691 | { |
| 1692 | /* |
| 1693 | false-test = "false" |
| 1694 | */ |
| 1695 | |
| 1696 | *cond=0; |
| 1697 | return 1; |
| 1698 | } |
| 1699 | else if (parse_identifier(filter,CUS "header")) |
| 1700 | { |
| 1701 | /* |
| 1702 | header-test = "header" { [comparator] [match-type] } |
| 1703 | <header-names: string-list> <key-list: string-list> |
| 1704 | */ |
| 1705 | |
| 1706 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
| 1707 | enum MatchType matchType=MATCH_IS; |
| 1708 | struct String *hdr,*h,*key,*k; |
| 1709 | int m; |
| 1710 | int co=0,mt=0; |
| 1711 | |
| 1712 | for (;;) |
| 1713 | { |
| 1714 | if (parse_white(filter)==-1) return -1; |
| 1715 | if ((m=parse_comparator(filter,&comparator))!=0) |
| 1716 | { |
| 1717 | if (m==-1) return -1; |
| 1718 | if (co) |
| 1719 | { |
| 1720 | filter->errmsg=CUS "comparator already specified"; |
| 1721 | return -1; |
| 1722 | } |
| 1723 | else co=1; |
| 1724 | } |
| 1725 | else if ((m=parse_matchtype(filter,&matchType))!=0) |
| 1726 | { |
| 1727 | if (m==-1) return -1; |
| 1728 | if (mt) |
| 1729 | { |
| 1730 | filter->errmsg=CUS "match type already specified"; |
| 1731 | return -1; |
| 1732 | } |
| 1733 | else mt=1; |
| 1734 | } |
| 1735 | else break; |
| 1736 | } |
| 1737 | if (parse_white(filter)==-1) return -1; |
| 1738 | if ((m=parse_stringlist(filter,&hdr))!=1) |
| 1739 | { |
| 1740 | if (m==0) filter->errmsg=CUS "header string list expected"; |
| 1741 | return -1; |
| 1742 | } |
| 1743 | if (parse_white(filter)==-1) return -1; |
| 1744 | if ((m=parse_stringlist(filter,&key))!=1) |
| 1745 | { |
| 1746 | if (m==0) filter->errmsg=CUS "key string list expected"; |
| 1747 | return -1; |
| 1748 | } |
| 1749 | *cond=0; |
| 1750 | for (h=hdr; h->length!=-1 && !*cond; ++h) |
| 1751 | { |
| 1752 | if (!is_header(h)) |
| 1753 | { |
| 1754 | filter->errmsg=CUS "invalid header field"; |
| 1755 | return -1; |
| 1756 | } |
| 1757 | if (exec) |
| 1758 | { |
| 1759 | struct String header_value; |
| 1760 | uschar *header_def; |
| 1761 | |
| 1762 | expand_header(&header_value,h); |
| 1763 | header_def=expand_string(string_sprintf("${if def:header_%s {true}{false}}",quote(h))); |
| 1764 | if (header_value.character == NULL || header_def == NULL) |
| 1765 | { |
| 1766 | filter->errmsg=CUS "header string expansion failed"; |
| 1767 | return -1; |
| 1768 | } |
| 1769 | for (k=key; k->length!=-1; ++k) |
| 1770 | { |
| 1771 | if (Ustrcmp(header_def,"true")==0) |
| 1772 | { |
| 1773 | *cond=compare(filter,k,&header_value,comparator,matchType); |
| 1774 | if (*cond==-1) return -1; |
| 1775 | if (*cond) break; |
| 1776 | } |
| 1777 | } |
| 1778 | } |
| 1779 | } |
| 1780 | return 1; |
| 1781 | } |
| 1782 | else if (parse_identifier(filter,CUS "not")) |
| 1783 | { |
| 1784 | if (parse_white(filter)==-1) return -1; |
| 1785 | switch (parse_test(filter,cond,exec)) |
| 1786 | { |
| 1787 | case -1: return -1; |
| 1788 | case 0: filter->errmsg=CUS "missing test"; return -1; |
| 1789 | default: *cond=!*cond; return 1; |
| 1790 | } |
| 1791 | } |
| 1792 | else if (parse_identifier(filter,CUS "size")) |
| 1793 | { |
| 1794 | /* |
| 1795 | relop = ":over" / ":under" |
| 1796 | size-test = "size" relop <limit: number> |
| 1797 | */ |
| 1798 | |
| 1799 | unsigned long limit; |
| 1800 | int overNotUnder; |
| 1801 | |
| 1802 | if (parse_white(filter)==-1) return -1; |
| 1803 | if (parse_identifier(filter,CUS ":over")) overNotUnder=1; |
| 1804 | else if (parse_identifier(filter,CUS ":under")) overNotUnder=0; |
| 1805 | else |
| 1806 | { |
| 1807 | filter->errmsg=CUS "missing :over or :under"; |
| 1808 | return -1; |
| 1809 | } |
| 1810 | if (parse_white(filter)==-1) return -1; |
| 1811 | if (parse_number(filter,&limit)==-1) return -1; |
| 1812 | *cond=(overNotUnder ? (message_size>limit) : (message_size<limit)); |
| 1813 | return 1; |
| 1814 | } |
| 1815 | else if (parse_identifier(filter,CUS "true")) |
| 1816 | { |
| 1817 | *cond=1; |
| 1818 | return 1; |
| 1819 | } |
| 1820 | else if (parse_identifier(filter,CUS "envelope")) |
| 1821 | { |
| 1822 | /* |
| 1823 | envelope-test = "envelope" { [comparator] [address-part] [match-type] } |
| 1824 | <envelope-part: string-list> <key-list: string-list> |
| 1825 | |
| 1826 | envelope-part is case insensitive "from" or "to" |
| 1827 | */ |
| 1828 | |
| 1829 | enum Comparator comparator=COMP_EN_ASCII_CASEMAP; |
| 1830 | enum AddressPart addressPart=ADDRPART_ALL; |
| 1831 | enum MatchType matchType=MATCH_IS; |
| 1832 | struct String *env,*e,*key,*k; |
| 1833 | int m; |
| 1834 | int co=0,ap=0,mt=0; |
| 1835 | |
| 1836 | if (!filter->require_envelope) |
| 1837 | { |
| 1838 | filter->errmsg=CUS "missing previous require \"envelope\";"; |
| 1839 | return -1; |
| 1840 | } |
| 1841 | for (;;) |
| 1842 | { |
| 1843 | if (parse_white(filter)==-1) return -1; |
| 1844 | if ((m=parse_comparator(filter,&comparator))!=0) |
| 1845 | { |
| 1846 | if (m==-1) return -1; |
| 1847 | if (co) |
| 1848 | { |
| 1849 | filter->errmsg=CUS "comparator already specified"; |
| 1850 | return -1; |
| 1851 | } |
| 1852 | else co=1; |
| 1853 | } |
| 1854 | else if ((m=parse_addresspart(filter,&addressPart))!=0) |
| 1855 | { |
| 1856 | if (m==-1) return -1; |
| 1857 | if (ap) |
| 1858 | { |
| 1859 | filter->errmsg=CUS "address part already specified"; |
| 1860 | return -1; |
| 1861 | } |
| 1862 | else ap=1; |
| 1863 | } |
| 1864 | else if ((m=parse_matchtype(filter,&matchType))!=0) |
| 1865 | { |
| 1866 | if (m==-1) return -1; |
| 1867 | if (mt) |
| 1868 | { |
| 1869 | filter->errmsg=CUS "match type already specified"; |
| 1870 | return -1; |
| 1871 | } |
| 1872 | else mt=1; |
| 1873 | } |
| 1874 | else break; |
| 1875 | } |
| 1876 | if (parse_white(filter)==-1) return -1; |
| 1877 | if ((m=parse_stringlist(filter,&env))!=1) |
| 1878 | { |
| 1879 | if (m==0) filter->errmsg=CUS "envelope string list expected"; |
| 1880 | return -1; |
| 1881 | } |
| 1882 | if (parse_white(filter)==-1) return -1; |
| 1883 | if ((m=parse_stringlist(filter,&key))!=1) |
| 1884 | { |
| 1885 | if (m==0) filter->errmsg=CUS "key string list expected"; |
| 1886 | return -1; |
| 1887 | } |
| 1888 | *cond=0; |
| 1889 | for (e=env; e->character; ++e) |
| 1890 | { |
| 1891 | const uschar *envelopeExpr=CUS 0; |
| 1892 | uschar *envelope=US 0; |
| 1893 | |
| 1894 | if (eq_asciicase(e,&str_from,0)) |
| 1895 | { |
| 1896 | switch (addressPart) |
| 1897 | { |
| 1898 | case ADDRPART_ALL: envelopeExpr=CUS "$sender_address"; break; |
| 1899 | #ifdef SUBADDRESS |
| 1900 | case ADDRPART_USER: |
| 1901 | #endif |
| 1902 | case ADDRPART_LOCALPART: envelopeExpr=CUS "${local_part:$sender_address}"; break; |
| 1903 | case ADDRPART_DOMAIN: envelopeExpr=CUS "${domain:$sender_address}"; break; |
| 1904 | #ifdef SUBADDRESS |
| 1905 | case ADDRPART_DETAIL: envelopeExpr=CUS 0; break; |
| 1906 | #endif |
| 1907 | } |
| 1908 | } |
| 1909 | else if (eq_asciicase(e,&str_to,0)) |
| 1910 | { |
| 1911 | switch (addressPart) |
| 1912 | { |
| 1913 | case ADDRPART_ALL: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix@$domain"; break; |
| 1914 | #ifdef SUBADDRESS |
| 1915 | case ADDRPART_USER: envelopeExpr=filter->useraddress; break; |
| 1916 | case ADDRPART_DETAIL: envelopeExpr=filter->subaddress; break; |
| 1917 | #endif |
| 1918 | case ADDRPART_LOCALPART: envelopeExpr=CUS "$local_part_prefix$local_part$local_part_suffix"; break; |
| 1919 | case ADDRPART_DOMAIN: envelopeExpr=CUS "$domain"; break; |
| 1920 | } |
| 1921 | } |
| 1922 | else |
| 1923 | { |
| 1924 | filter->errmsg=CUS "invalid envelope string"; |
| 1925 | return -1; |
| 1926 | } |
| 1927 | if (exec && envelopeExpr) |
| 1928 | { |
| 1929 | if ((envelope=expand_string(US envelopeExpr)) == NULL) |
| 1930 | { |
| 1931 | filter->errmsg=CUS "header string expansion failed"; |
| 1932 | return -1; |
| 1933 | } |
| 1934 | for (k=key; k->length!=-1; ++k) |
| 1935 | { |
| 1936 | struct String envelopeStr; |
| 1937 | |
| 1938 | envelopeStr.character=envelope; |
| 1939 | envelopeStr.length=Ustrlen(envelope); |
| 1940 | *cond=compare(filter,k,&envelopeStr,comparator,matchType); |
| 1941 | if (*cond==-1) return -1; |
| 1942 | if (*cond) break; |
| 1943 | } |
| 1944 | } |
| 1945 | } |
| 1946 | return 1; |
| 1947 | } |
| 1948 | else return 0; |
| 1949 | } |
| 1950 | |
| 1951 | |
| 1952 | /************************************************* |
| 1953 | * Parse and interpret an optional block * |
| 1954 | *************************************************/ |
| 1955 | |
| 1956 | /* |
| 1957 | Arguments: |
| 1958 | filter points to the Sieve filter including its state |
| 1959 | exec Execute parsed statements |
| 1960 | generated where to hang newly-generated addresses |
| 1961 | |
| 1962 | Returns: 2 success by stop |
| 1963 | 1 other success |
| 1964 | 0 no block command found |
| 1965 | -1 syntax or execution error |
| 1966 | */ |
| 1967 | |
| 1968 | static int parse_block(struct Sieve *filter, int exec, |
| 1969 | address_item **generated) |
| 1970 | { |
| 1971 | int r; |
| 1972 | |
| 1973 | if (parse_white(filter)==-1) return -1; |
| 1974 | if (*filter->pc=='{') |
| 1975 | { |
| 1976 | ++filter->pc; |
| 1977 | if ((r=parse_commands(filter,exec,generated))==-1 || r==2) return r; |
| 1978 | if (*filter->pc=='}') |
| 1979 | { |
| 1980 | ++filter->pc; |
| 1981 | return 1; |
| 1982 | } |
| 1983 | else |
| 1984 | { |
| 1985 | filter->errmsg=CUS "expecting command or closing brace"; |
| 1986 | return -1; |
| 1987 | } |
| 1988 | } |
| 1989 | else return 0; |
| 1990 | } |
| 1991 | |
| 1992 | |
| 1993 | /************************************************* |
| 1994 | * Match a semicolon * |
| 1995 | *************************************************/ |
| 1996 | |
| 1997 | /* |
| 1998 | Arguments: |
| 1999 | filter points to the Sieve filter including its state |
| 2000 | |
| 2001 | Returns: 1 success |
| 2002 | -1 syntax error |
| 2003 | */ |
| 2004 | |
| 2005 | static int parse_semicolon(struct Sieve *filter) |
| 2006 | { |
| 2007 | if (parse_white(filter)==-1) return -1; |
| 2008 | if (*filter->pc==';') |
| 2009 | { |
| 2010 | ++filter->pc; |
| 2011 | return 1; |
| 2012 | } |
| 2013 | else |
| 2014 | { |
| 2015 | filter->errmsg=CUS "missing semicolon"; |
| 2016 | return -1; |
| 2017 | } |
| 2018 | } |
| 2019 | |
| 2020 | |
| 2021 | /************************************************* |
| 2022 | * Parse and interpret a Sieve command * |
| 2023 | *************************************************/ |
| 2024 | |
| 2025 | /* |
| 2026 | Arguments: |
| 2027 | filter points to the Sieve filter including its state |
| 2028 | exec Execute parsed statements |
| 2029 | generated where to hang newly-generated addresses |
| 2030 | |
| 2031 | Returns: 2 success by stop |
| 2032 | 1 other success |
| 2033 | -1 syntax or execution error |
| 2034 | */ |
| 2035 | static int parse_commands(struct Sieve *filter, int exec, |
| 2036 | address_item **generated) |
| 2037 | { |
| 2038 | while (*filter->pc) |
| 2039 | { |
| 2040 | if (parse_white(filter)==-1) return -1; |
| 2041 | if (parse_identifier(filter,CUS "if")) |
| 2042 | { |
| 2043 | /* |
| 2044 | if-command = "if" test block *( "elsif" test block ) [ else block ] |
| 2045 | */ |
| 2046 | |
| 2047 | int cond,m,unsuccessful; |
| 2048 | |
| 2049 | /* test block */ |
| 2050 | if (parse_white(filter)==-1) return -1; |
| 2051 | if ((m=parse_test(filter,&cond,exec))==-1) return -1; |
| 2052 | if (m==0) |
| 2053 | { |
| 2054 | filter->errmsg=CUS "missing test"; |
| 2055 | return -1; |
| 2056 | } |
| 2057 | m=parse_block(filter,exec ? cond : 0, generated); |
| 2058 | if (m==-1 || m==2) return m; |
| 2059 | if (m==0) |
| 2060 | { |
| 2061 | filter->errmsg=CUS "missing block"; |
| 2062 | return -1; |
| 2063 | } |
| 2064 | unsuccessful = !cond; |
| 2065 | for (;;) /* elsif test block */ |
| 2066 | { |
| 2067 | if (parse_white(filter)==-1) return -1; |
| 2068 | if (parse_identifier(filter,CUS "elsif")) |
| 2069 | { |
| 2070 | if (parse_white(filter)==-1) return -1; |
| 2071 | m=parse_test(filter,&cond,exec && unsuccessful); |
| 2072 | if (m==-1 || m==2) return m; |
| 2073 | if (m==0) |
| 2074 | { |
| 2075 | filter->errmsg=CUS "missing test"; |
| 2076 | return -1; |
| 2077 | } |
| 2078 | m=parse_block(filter,exec && unsuccessful ? cond : 0, generated); |
| 2079 | if (m==-1 || m==2) return m; |
| 2080 | if (m==0) |
| 2081 | { |
| 2082 | filter->errmsg=CUS "missing block"; |
| 2083 | return -1; |
| 2084 | } |
| 2085 | if (exec && unsuccessful && cond) unsuccessful = 0; |
| 2086 | } |
| 2087 | else break; |
| 2088 | } |
| 2089 | /* else block */ |
| 2090 | if (parse_white(filter)==-1) return -1; |
| 2091 | if (parse_identifier(filter,CUS "else")) |
| 2092 | { |
| 2093 | m=parse_block(filter,exec && unsuccessful, generated); |
| 2094 | if (m==-1 || m==2) return m; |
| 2095 | if (m==0) |
| 2096 | { |
| 2097 | filter->errmsg=CUS "missing block"; |
| 2098 | return -1; |
| 2099 | } |
| 2100 | } |
| 2101 | } |
| 2102 | else if (parse_identifier(filter,CUS "stop")) |
| 2103 | { |
| 2104 | /* |
| 2105 | stop-command = "stop" { stop-options } ";" |
| 2106 | stop-options = |
| 2107 | */ |
| 2108 | |
| 2109 | if (parse_semicolon(filter)==-1) return -1; |
| 2110 | if (exec) |
| 2111 | { |
| 2112 | filter->pc+=Ustrlen(filter->pc); |
| 2113 | return 2; |
| 2114 | } |
| 2115 | } |
| 2116 | else if (parse_identifier(filter,CUS "keep")) |
| 2117 | { |
| 2118 | /* |
| 2119 | keep-command = "keep" { keep-options } ";" |
| 2120 | keep-options = |
| 2121 | */ |
| 2122 | |
| 2123 | if (parse_semicolon(filter)==-1) return -1; |
| 2124 | if (exec) |
| 2125 | { |
| 2126 | add_addr(generated,US"inbox",1,0,0,0); |
| 2127 | filter->keep = 0; |
| 2128 | } |
| 2129 | } |
| 2130 | else if (parse_identifier(filter,CUS "discard")) |
| 2131 | { |
| 2132 | /* |
| 2133 | discard-command = "discard" { discard-options } ";" |
| 2134 | discard-options = |
| 2135 | */ |
| 2136 | |
| 2137 | if (parse_semicolon(filter)==-1) return -1; |
| 2138 | if (exec) filter->keep=0; |
| 2139 | } |
| 2140 | else if (parse_identifier(filter,CUS "redirect")) |
| 2141 | { |
| 2142 | /* |
| 2143 | redirect-command = "redirect" redirect-options "string" ";" |
| 2144 | redirect-options = |
| 2145 | redirect-options =) ":copy" |
| 2146 | */ |
| 2147 | |
| 2148 | struct String recipient; |
| 2149 | int m; |
| 2150 | int copy=0; |
| 2151 | |
| 2152 | for (;;) |
| 2153 | { |
| 2154 | if (parse_white(filter)==-1) return -1; |
| 2155 | if (parse_identifier(filter,CUS ":copy")==1) |
| 2156 | { |
| 2157 | if (!filter->require_copy) |
| 2158 | { |
| 2159 | filter->errmsg=CUS "missing previous require \"copy\";"; |
| 2160 | return -1; |
| 2161 | } |
| 2162 | copy=1; |
| 2163 | } |
| 2164 | else break; |
| 2165 | } |
| 2166 | if (parse_white(filter)==-1) return -1; |
| 2167 | if ((m=parse_string(filter,&recipient))!=1) |
| 2168 | { |
| 2169 | if (m==0) filter->errmsg=CUS "missing redirect recipient string"; |
| 2170 | return -1; |
| 2171 | } |
| 2172 | if (strchr(CCS recipient.character,'@')==(char*)0) |
| 2173 | { |
| 2174 | filter->errmsg=CUS "unqualified recipient address"; |
| 2175 | return -1; |
| 2176 | } |
| 2177 | if (exec) |
| 2178 | { |
| 2179 | add_addr(generated,recipient.character,0,0,0,0); |
| 2180 | if (!copy) filter->keep = 0; |
| 2181 | } |
| 2182 | if (parse_semicolon(filter)==-1) return -1; |
| 2183 | } |
| 2184 | else if (parse_identifier(filter,CUS "fileinto")) |
| 2185 | { |
| 2186 | /* |
| 2187 | fileinto-command = "fileinto" { fileinto-options } string ";" |
| 2188 | fileinto-options = |
| 2189 | fileinto-options =) [ ":copy" ] |
| 2190 | */ |
| 2191 | |
| 2192 | struct String folder; |
| 2193 | uschar *s; |
| 2194 | int m; |
| 2195 | unsigned long maxage, maxmessages, maxstorage; |
| 2196 | int copy=0; |
| 2197 | |
| 2198 | maxage = maxmessages = maxstorage = 0; |
| 2199 | if (!filter->require_fileinto) |
| 2200 | { |
| 2201 | filter->errmsg=CUS "missing previous require \"fileinto\";"; |
| 2202 | return -1; |
| 2203 | } |
| 2204 | for (;;) |
| 2205 | { |
| 2206 | if (parse_white(filter)==-1) return -1; |
| 2207 | if (parse_identifier(filter,CUS ":copy")==1) |
| 2208 | { |
| 2209 | if (!filter->require_copy) |
| 2210 | { |
| 2211 | filter->errmsg=CUS "missing previous require \"copy\";"; |
| 2212 | return -1; |
| 2213 | } |
| 2214 | copy=1; |
| 2215 | } |
| 2216 | else break; |
| 2217 | } |
| 2218 | if (parse_white(filter)==-1) return -1; |
| 2219 | if ((m=parse_string(filter,&folder))!=1) |
| 2220 | { |
| 2221 | if (m==0) filter->errmsg=CUS "missing fileinto folder string"; |
| 2222 | return -1; |
| 2223 | } |
| 2224 | m=0; s=folder.character; |
| 2225 | if (folder.length==0) m=1; |
| 2226 | if (Ustrcmp(s,"..")==0 || Ustrncmp(s,"../",3)==0) m=1; |
| 2227 | else while (*s) |
| 2228 | { |
| 2229 | if (Ustrcmp(s,"/..")==0 || Ustrncmp(s,"/../",4)==0) { m=1; break; } |
| 2230 | ++s; |
| 2231 | } |
| 2232 | if (m) |
| 2233 | { |
| 2234 | filter->errmsg=CUS "invalid folder"; |
| 2235 | return -1; |
| 2236 | } |
| 2237 | if (exec) |
| 2238 | { |
| 2239 | add_addr(generated, folder.character, 1, maxage, maxmessages, maxstorage); |
| 2240 | if (!copy) filter->keep = 0; |
| 2241 | } |
| 2242 | if (parse_semicolon(filter)==-1) return -1; |
| 2243 | } |
| 2244 | #ifdef VACATION |
| 2245 | else if (parse_identifier(filter,CUS "vacation")) |
| 2246 | { |
| 2247 | /* |
| 2248 | vacation-command = "vacation" { vacation-options } <reason: string> ";" |
| 2249 | vacation-options = [":days" number] |
| 2250 | [":subject" string] |
| 2251 | [":from" string] |
| 2252 | [":addresses" string-list] |
| 2253 | [":mime"] |
| 2254 | [":handle" string] |
| 2255 | */ |
| 2256 | |
| 2257 | int m; |
| 2258 | unsigned long days; |
| 2259 | struct String subject; |
| 2260 | struct String from; |
| 2261 | struct String *addresses; |
| 2262 | int reason_is_mime; |
| 2263 | string_item *aliases; |
| 2264 | struct String handle; |
| 2265 | struct String reason; |
| 2266 | |
| 2267 | if (!filter->require_vacation) |
| 2268 | { |
| 2269 | filter->errmsg=CUS "missing previous require \"vacation\";"; |
| 2270 | return -1; |
| 2271 | } |
| 2272 | if (exec) |
| 2273 | { |
| 2274 | if (filter->vacation_ran) |
| 2275 | { |
| 2276 | filter->errmsg=CUS "trying to execute vacation more than once"; |
| 2277 | return -1; |
| 2278 | } |
| 2279 | filter->vacation_ran=1; |
| 2280 | } |
| 2281 | days=VACATION_MIN_DAYS>7 ? VACATION_MIN_DAYS : 7; |
| 2282 | subject.character=(uschar*)0; |
| 2283 | subject.length=-1; |
| 2284 | from.character=(uschar*)0; |
| 2285 | from.length=-1; |
| 2286 | addresses=(struct String*)0; |
| 2287 | aliases=NULL; |
| 2288 | reason_is_mime=0; |
| 2289 | handle.character=(uschar*)0; |
| 2290 | handle.length=-1; |
| 2291 | for (;;) |
| 2292 | { |
| 2293 | if (parse_white(filter)==-1) return -1; |
| 2294 | if (parse_identifier(filter,CUS ":days")==1) |
| 2295 | { |
| 2296 | if (parse_white(filter)==-1) return -1; |
| 2297 | if (parse_number(filter,&days)==-1) return -1; |
| 2298 | if (days<VACATION_MIN_DAYS) days=VACATION_MIN_DAYS; |
| 2299 | else if (days>VACATION_MAX_DAYS) days=VACATION_MAX_DAYS; |
| 2300 | } |
| 2301 | else if (parse_identifier(filter,CUS ":subject")==1) |
| 2302 | { |
| 2303 | if (parse_white(filter)==-1) return -1; |
| 2304 | if ((m=parse_string(filter,&subject))!=1) |
| 2305 | { |
| 2306 | if (m==0) filter->errmsg=CUS "subject string expected"; |
| 2307 | return -1; |
| 2308 | } |
| 2309 | } |
| 2310 | else if (parse_identifier(filter,CUS ":from")==1) |
| 2311 | { |
| 2312 | int start, end, domain; |
| 2313 | uschar *error,*ss; |
| 2314 | |
| 2315 | if (parse_white(filter)==-1) return -1; |
| 2316 | if ((m=parse_string(filter,&from))!=1) |
| 2317 | { |
| 2318 | if (m==0) filter->errmsg=CUS "from string expected"; |
| 2319 | return -1; |
| 2320 | } |
| 2321 | if (from.length>0) |
| 2322 | { |
| 2323 | ss = parse_extract_address(from.character, &error, &start, &end, &domain, |
| 2324 | FALSE); |
| 2325 | if (ss == NULL) |
| 2326 | { |
| 2327 | filter->errmsg=string_sprintf("malformed address \"%s\" in " |
| 2328 | "Sieve filter: %s", from.character, error); |
| 2329 | return -1; |
| 2330 | } |
| 2331 | } |
| 2332 | else |
| 2333 | { |
| 2334 | filter->errmsg=CUS "empty :from address in Sieve filter"; |
| 2335 | return -1; |
| 2336 | } |
| 2337 | } |
| 2338 | else if (parse_identifier(filter,CUS ":addresses")==1) |
| 2339 | { |
| 2340 | struct String *a; |
| 2341 | |
| 2342 | if (parse_white(filter)==-1) return -1; |
| 2343 | if ((m=parse_stringlist(filter,&addresses))!=1) |
| 2344 | { |
| 2345 | if (m==0) filter->errmsg=CUS "addresses string list expected"; |
| 2346 | return -1; |
| 2347 | } |
| 2348 | for (a=addresses; a->length!=-1; ++a) |
| 2349 | { |
| 2350 | string_item *new; |
| 2351 | |
| 2352 | new=store_get(sizeof(string_item)); |
| 2353 | new->text=store_get(a->length+1); |
| 2354 | if (a->length) memcpy(new->text,a->character,a->length); |
| 2355 | new->text[a->length]='\0'; |
| 2356 | new->next=aliases; |
| 2357 | aliases=new; |
| 2358 | } |
| 2359 | } |
| 2360 | else if (parse_identifier(filter,CUS ":mime")==1) |
| 2361 | reason_is_mime=1; |
| 2362 | else if (parse_identifier(filter,CUS ":handle")==1) |
| 2363 | { |
| 2364 | if (parse_white(filter)==-1) return -1; |
| 2365 | if ((m=parse_string(filter,&from))!=1) |
| 2366 | { |
| 2367 | if (m==0) filter->errmsg=CUS "handle string expected"; |
| 2368 | return -1; |
| 2369 | } |
| 2370 | } |
| 2371 | else break; |
| 2372 | } |
| 2373 | if (parse_white(filter)==-1) return -1; |
| 2374 | if ((m=parse_string(filter,&reason))!=1) |
| 2375 | { |
| 2376 | if (m==0) filter->errmsg=CUS "missing reason string"; |
| 2377 | return -1; |
| 2378 | } |
| 2379 | if (reason_is_mime) |
| 2380 | { |
| 2381 | uschar *s,*end; |
| 2382 | |
| 2383 | for (s=reason.character,end=reason.character+reason.length; s<end && (*s&0x80)==0; ++s); |
| 2384 | if (s<end) |
| 2385 | { |
| 2386 | filter->errmsg=CUS "MIME reason string contains 8bit text"; |
| 2387 | return -1; |
| 2388 | } |
| 2389 | } |
| 2390 | if (parse_semicolon(filter)==-1) return -1; |
| 2391 | |
| 2392 | if (exec) |
| 2393 | { |
| 2394 | address_item *addr; |
| 2395 | int capacity,start; |
| 2396 | uschar *buffer; |
| 2397 | int buffer_capacity; |
| 2398 | struct String key; |
| 2399 | md5 base; |
| 2400 | uschar digest[16]; |
| 2401 | uschar hexdigest[33]; |
| 2402 | int i; |
| 2403 | uschar *once; |
| 2404 | |
| 2405 | if (filter_personal(aliases,TRUE)) |
| 2406 | { |
| 2407 | if (filter_test == FTEST_NONE) |
| 2408 | { |
| 2409 | /* ensure oncelog directory exists; failure will be detected later */ |
| 2410 | |
| 2411 | (void)directory_make(NULL, filter->vacation_directory, 0700, FALSE); |
| 2412 | } |
| 2413 | /* build oncelog filename */ |
| 2414 | |
| 2415 | key.character=(uschar*)0; |
| 2416 | key.length=0; |
| 2417 | capacity=0; |
| 2418 | if (handle.length==-1) |
| 2419 | { |
| 2420 | if (subject.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,subject.character,subject.length); |
| 2421 | if (from.length!=-1) key.character=string_cat(key.character,&capacity,&key.length,from.character,from.length); |
| 2422 | key.character=string_cat(key.character,&capacity,&key.length,reason_is_mime?US"1":US"0",1); |
| 2423 | key.character=string_cat(key.character,&capacity,&key.length,reason.character,reason.length); |
| 2424 | } |
| 2425 | else |
| 2426 | key=handle; |
| 2427 | md5_start(&base); |
| 2428 | md5_end(&base, key.character, key.length, digest); |
| 2429 | for (i = 0; i < 16; i++) sprintf(CS (hexdigest+2*i), "%02X", digest[i]); |
| 2430 | if (filter_test != FTEST_NONE) |
| 2431 | { |
| 2432 | debug_printf("Sieve: mail was personal, vacation file basename: %s\n", hexdigest); |
| 2433 | } |
| 2434 | else |
| 2435 | { |
| 2436 | capacity=Ustrlen(filter->vacation_directory); |
| 2437 | start=capacity; |
| 2438 | once=string_cat(filter->vacation_directory,&capacity,&start,US"/",1); |
| 2439 | once=string_cat(once,&capacity,&start,hexdigest,33); |
| 2440 | once[start] = '\0'; |
| 2441 | |
| 2442 | /* process subject */ |
| 2443 | |
| 2444 | if (subject.length==-1) |
| 2445 | { |
| 2446 | expand_header(&subject,&str_subject); |
| 2447 | capacity=6; |
| 2448 | start=6; |
| 2449 | subject.character=string_cat(US"Auto: ",&capacity,&start,subject.character,subject.length); |
| 2450 | subject.length=start; |
| 2451 | } |
| 2452 | |
| 2453 | /* add address to list of generated addresses */ |
| 2454 | |
| 2455 | addr = deliver_make_addr(string_sprintf(">%.256s", sender_address), FALSE); |
| 2456 | setflag(addr, af_pfr); |
| 2457 | setflag(addr, af_ignore_error); |
| 2458 | addr->next = *generated; |
| 2459 | *generated = addr; |
| 2460 | addr->reply = store_get(sizeof(reply_item)); |
| 2461 | memset(addr->reply,0,sizeof(reply_item)); /* XXX */ |
| 2462 | addr->reply->to = string_copy(sender_address); |
| 2463 | if (from.length==-1) |
| 2464 | addr->reply->from = expand_string(US"$local_part@$domain"); |
| 2465 | else |
| 2466 | addr->reply->from = from.character; |
| 2467 | /* Allocation is larger than neccessary, but enough even for split MIME words */ |
| 2468 | buffer_capacity=16+4*subject.length; |
| 2469 | buffer=store_get(buffer_capacity); |
| 2470 | addr->reply->subject=parse_quote_2047(subject.character, subject.length, US"utf-8", buffer, buffer_capacity); |
| 2471 | addr->reply->oncelog=once; |
| 2472 | addr->reply->once_repeat=days*86400; |
| 2473 | |
| 2474 | /* build body and MIME headers */ |
| 2475 | |
| 2476 | if (reason_is_mime) |
| 2477 | { |
| 2478 | uschar *mime_body,*reason_end; |
| 2479 | #ifdef RFC_EOL |
| 2480 | static const uschar nlnl[]="\r\n\r\n"; |
| 2481 | #else |
| 2482 | static const uschar nlnl[]="\n\n"; |
| 2483 | #endif |
| 2484 | |
| 2485 | for |
| 2486 | ( |
| 2487 | mime_body=reason.character,reason_end=reason.character+reason.length; |
| 2488 | mime_body<(reason_end-sizeof(nlnl)-1) && memcmp(mime_body,nlnl,sizeof(nlnl)-1); |
| 2489 | ++mime_body |
| 2490 | ); |
| 2491 | capacity = 0; |
| 2492 | start = 0; |
| 2493 | addr->reply->headers = string_cat(NULL,&capacity,&start,reason.character,mime_body-reason.character); |
| 2494 | addr->reply->headers[start] = '\0'; |
| 2495 | capacity = 0; |
| 2496 | start = 0; |
| 2497 | if (mime_body+(sizeof(nlnl)-1)<reason_end) mime_body+=sizeof(nlnl)-1; |
| 2498 | else mime_body=reason_end-1; |
| 2499 | addr->reply->text = string_cat(NULL,&capacity,&start,mime_body,reason_end-mime_body); |
| 2500 | addr->reply->text[start] = '\0'; |
| 2501 | } |
| 2502 | else |
| 2503 | { |
| 2504 | struct String qp; |
| 2505 | |
| 2506 | capacity = 0; |
| 2507 | start = reason.length; |
| 2508 | addr->reply->headers = US"MIME-Version: 1.0\n" |
| 2509 | "Content-Type: text/plain;\n" |
| 2510 | "\tcharset=\"utf-8\"\n" |
| 2511 | "Content-Transfer-Encoding: quoted-printable"; |
| 2512 | addr->reply->text = quoted_printable_encode(&reason,&qp)->character; |
| 2513 | } |
| 2514 | } |
| 2515 | } |
| 2516 | else if (filter_test != FTEST_NONE) |
| 2517 | { |
| 2518 | debug_printf("Sieve: mail was not personal, vacation would ignore it\n"); |
| 2519 | } |
| 2520 | } |
| 2521 | } |
| 2522 | else break; |
| 2523 | #endif |
| 2524 | } |
| 2525 | return 1; |
| 2526 | } |
| 2527 | |
| 2528 | |
| 2529 | /************************************************* |
| 2530 | * Parse and interpret a sieve filter * |
| 2531 | *************************************************/ |
| 2532 | |
| 2533 | /* |
| 2534 | Arguments: |
| 2535 | filter points to the Sieve filter including its state |
| 2536 | exec Execute parsed statements |
| 2537 | generated where to hang newly-generated addresses |
| 2538 | |
| 2539 | Returns: 1 success |
| 2540 | -1 syntax or execution error |
| 2541 | */ |
| 2542 | |
| 2543 | static int parse_start(struct Sieve *filter, int exec, |
| 2544 | address_item **generated) |
| 2545 | { |
| 2546 | filter->pc=filter->filter; |
| 2547 | filter->line=1; |
| 2548 | filter->keep=1; |
| 2549 | filter->require_envelope=0; |
| 2550 | filter->require_fileinto=0; |
| 2551 | #ifdef SUBADDRESS |
| 2552 | filter->require_subaddress=0; |
| 2553 | #endif |
| 2554 | #ifdef VACATION |
| 2555 | filter->require_vacation=0; |
| 2556 | filter->vacation_ran=0; |
| 2557 | #endif |
| 2558 | filter->require_copy=0; |
| 2559 | filter->require_iascii_numeric=0; |
| 2560 | |
| 2561 | if (parse_white(filter)==-1) return -1; |
| 2562 | |
| 2563 | if (exec && filter->vacation_directory != NULL && filter_test == FTEST_NONE) |
| 2564 | { |
| 2565 | DIR *oncelogdir; |
| 2566 | struct dirent *oncelog; |
| 2567 | struct stat properties; |
| 2568 | time_t now; |
| 2569 | |
| 2570 | /* clean up old vacation log databases */ |
| 2571 | |
| 2572 | oncelogdir=opendir(CS filter->vacation_directory); |
| 2573 | |
| 2574 | if (oncelogdir ==(DIR*)0 && errno != ENOENT) |
| 2575 | { |
| 2576 | filter->errmsg=CUS "unable to open vacation directory"; |
| 2577 | return -1; |
| 2578 | } |
| 2579 | |
| 2580 | if (oncelogdir != NULL) |
| 2581 | { |
| 2582 | time(&now); |
| 2583 | |
| 2584 | while ((oncelog=readdir(oncelogdir))!=(struct dirent*)0) |
| 2585 | { |
| 2586 | if (strlen(oncelog->d_name)==32) |
| 2587 | { |
| 2588 | uschar *s=string_sprintf("%s/%s",filter->vacation_directory,oncelog->d_name); |
| 2589 | if (Ustat(s,&properties)==0 && (properties.st_mtime+VACATION_MAX_DAYS*86400)<now) |
| 2590 | Uunlink(s); |
| 2591 | } |
| 2592 | } |
| 2593 | closedir(oncelogdir); |
| 2594 | } |
| 2595 | } |
| 2596 | |
| 2597 | while (parse_identifier(filter,CUS "require")) |
| 2598 | { |
| 2599 | /* |
| 2600 | require-command = "require" <capabilities: string-list> |
| 2601 | */ |
| 2602 | |
| 2603 | struct String *cap,*check; |
| 2604 | int m; |
| 2605 | |
| 2606 | if (parse_white(filter)==-1) return -1; |
| 2607 | if ((m=parse_stringlist(filter,&cap))!=1) |
| 2608 | { |
| 2609 | if (m==0) filter->errmsg=CUS "capability string list expected"; |
| 2610 | return -1; |
| 2611 | } |
| 2612 | for (check=cap; check->character; ++check) |
| 2613 | { |
| 2614 | if (eq_octet(check,&str_envelope,0)) filter->require_envelope=1; |
| 2615 | else if (eq_octet(check,&str_fileinto,0)) filter->require_fileinto=1; |
| 2616 | #ifdef SUBADDRESS |
| 2617 | else if (eq_octet(check,&str_subaddress,0)) filter->require_subaddress=1; |
| 2618 | #endif |
| 2619 | #ifdef VACATION |
| 2620 | else if (eq_octet(check,&str_vacation,0)) |
| 2621 | { |
| 2622 | if (filter_test == FTEST_NONE && filter->vacation_directory == NULL) |
| 2623 | { |
| 2624 | filter->errmsg=CUS "vacation disabled"; |
| 2625 | return -1; |
| 2626 | } |
| 2627 | filter->require_vacation=1; |
| 2628 | } |
| 2629 | #endif |
| 2630 | else if (eq_octet(check,&str_copy,0)) filter->require_copy=1; |
| 2631 | else if (eq_octet(check,&str_comparator_ioctet,0)) ; |
| 2632 | else if (eq_octet(check,&str_comparator_iascii_casemap,0)) ; |
| 2633 | else if (eq_octet(check,&str_comparator_enascii_casemap,0)) ; |
| 2634 | else if (eq_octet(check,&str_comparator_iascii_numeric,0)) filter->require_iascii_numeric=1; |
| 2635 | else |
| 2636 | { |
| 2637 | filter->errmsg=CUS "unknown capability"; |
| 2638 | return -1; |
| 2639 | } |
| 2640 | } |
| 2641 | if (parse_semicolon(filter)==-1) return -1; |
| 2642 | } |
| 2643 | if (parse_commands(filter,exec,generated)==-1) return -1; |
| 2644 | if (*filter->pc) |
| 2645 | { |
| 2646 | filter->errmsg=CUS "syntax error"; |
| 2647 | return -1; |
| 2648 | } |
| 2649 | return 1; |
| 2650 | } |
| 2651 | |
| 2652 | |
| 2653 | /************************************************* |
| 2654 | * Interpret a sieve filter file * |
| 2655 | *************************************************/ |
| 2656 | |
| 2657 | /* |
| 2658 | Arguments: |
| 2659 | filter points to the entire file, read into store as a single string |
| 2660 | options controls whether various special things are allowed, and requests |
| 2661 | special actions (not currently used) |
| 2662 | sieve_vacation_directory where to store vacation "once" files |
| 2663 | useraddress string expression for :user part of address |
| 2664 | subaddress string expression for :subaddress part of address |
| 2665 | generated where to hang newly-generated addresses |
| 2666 | error where to pass back an error text |
| 2667 | |
| 2668 | Returns: FF_DELIVERED success, a significant action was taken |
| 2669 | FF_NOTDELIVERED success, no significant action |
| 2670 | FF_DEFER defer requested |
| 2671 | FF_FAIL fail requested |
| 2672 | FF_FREEZE freeze requested |
| 2673 | FF_ERROR there was a problem |
| 2674 | */ |
| 2675 | |
| 2676 | int |
| 2677 | sieve_interpret(uschar *filter, int options, uschar *vacation_directory, |
| 2678 | uschar *useraddress, uschar *subaddress, address_item **generated, uschar **error) |
| 2679 | { |
| 2680 | struct Sieve sieve; |
| 2681 | int r; |
| 2682 | uschar *msg; |
| 2683 | |
| 2684 | options = options; /* Keep picky compilers happy */ |
| 2685 | error = error; |
| 2686 | |
| 2687 | DEBUG(D_route) debug_printf("Sieve: start of processing\n"); |
| 2688 | sieve.filter=filter; |
| 2689 | |
| 2690 | if (vacation_directory == NULL) |
| 2691 | sieve.vacation_directory = NULL; |
| 2692 | else |
| 2693 | { |
| 2694 | sieve.vacation_directory=expand_string(vacation_directory); |
| 2695 | if (sieve.vacation_directory == NULL) |
| 2696 | { |
| 2697 | *error = string_sprintf("failed to expand \"%s\" " |
| 2698 | "(sieve_vacation_directory): %s", vacation_directory, |
| 2699 | expand_string_message); |
| 2700 | return FF_ERROR; |
| 2701 | } |
| 2702 | } |
| 2703 | |
| 2704 | sieve.useraddress = useraddress == NULL ? CUS "$local_part_prefix$local_part$local_part_suffix" : useraddress; |
| 2705 | sieve.subaddress = subaddress; |
| 2706 | |
| 2707 | #ifdef COMPILE_SYNTAX_CHECKER |
| 2708 | if (parse_start(&sieve,0,generated)==1) |
| 2709 | #else |
| 2710 | if (parse_start(&sieve,1,generated)==1) |
| 2711 | #endif |
| 2712 | { |
| 2713 | if (sieve.keep) |
| 2714 | { |
| 2715 | add_addr(generated,US"inbox",1,0,0,0); |
| 2716 | msg = string_sprintf("Implicit keep"); |
| 2717 | r = FF_DELIVERED; |
| 2718 | } |
| 2719 | else |
| 2720 | { |
| 2721 | msg = string_sprintf("No implicit keep"); |
| 2722 | r = FF_DELIVERED; |
| 2723 | } |
| 2724 | } |
| 2725 | else |
| 2726 | { |
| 2727 | msg = string_sprintf("Sieve error: %s in line %d",sieve.errmsg,sieve.line); |
| 2728 | #ifdef COMPILE_SYNTAX_CHECKER |
| 2729 | r = FF_ERROR; |
| 2730 | *error = msg; |
| 2731 | #else |
| 2732 | add_addr(generated,US"inbox",1,0,0,0); |
| 2733 | r = FF_DELIVERED; |
| 2734 | #endif |
| 2735 | } |
| 2736 | |
| 2737 | #ifndef COMPILE_SYNTAX_CHECKER |
| 2738 | if (filter_test != FTEST_NONE) printf("%s\n", (const char*) msg); |
| 2739 | else debug_printf("%s\n", msg); |
| 2740 | #endif |
| 2741 | |
| 2742 | DEBUG(D_route) debug_printf("Sieve: end of processing\n"); |
| 2743 | return r; |
| 2744 | } |