| 1 | /* $Cambridge: exim/src/src/exim_dbutil.c,v 1.9 2005/09/16 14:11:25 fanf2 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 | |
| 11 | /* This single source file is used to compile three utility programs for |
| 12 | maintaining Exim hints databases. |
| 13 | |
| 14 | exim_dumpdb dumps out the contents |
| 15 | exim_fixdb patches the database (really for Exim maintenance/testing) |
| 16 | exim_tidydb removed obsolete data |
| 17 | |
| 18 | In all cases, the first argument is the name of the spool directory. The second |
| 19 | argument is the name of the database file. The available names are: |
| 20 | |
| 21 | retry: retry delivery information |
| 22 | misc: miscellaneous hints data |
| 23 | wait-<t>: message waiting information; <t> is a transport name |
| 24 | callout: callout verification cache |
| 25 | |
| 26 | There are a number of common subroutines, followed by three main programs, |
| 27 | whose inclusion is controlled by -D on the compilation command. */ |
| 28 | |
| 29 | |
| 30 | /* Standard C headers and Unix headers */ |
| 31 | |
| 32 | #include <ctype.h> |
| 33 | #include <signal.h> |
| 34 | #include <stdarg.h> |
| 35 | #include <stdio.h> |
| 36 | #include <stdlib.h> |
| 37 | #include <string.h> |
| 38 | #include <time.h> |
| 39 | |
| 40 | #include <errno.h> |
| 41 | #include <fcntl.h> |
| 42 | #include <unistd.h> |
| 43 | #include <sys/stat.h> |
| 44 | |
| 45 | |
| 46 | /* These are two values from macros.h which should perhaps be accessible in |
| 47 | some better way than just repeating them here. */ |
| 48 | |
| 49 | #define WAIT_NAME_MAX 50 |
| 50 | #define MESSAGE_ID_LENGTH 16 |
| 51 | |
| 52 | |
| 53 | /* This selection of Exim headers contains exactly what we need, and hopefully |
| 54 | not too much extra baggage. */ |
| 55 | |
| 56 | #include "config.h" /* Needed to get the DB type */ |
| 57 | #include "mytypes.h" |
| 58 | #include "macros.h" |
| 59 | #include "dbstuff.h" |
| 60 | #include "osfunctions.h" |
| 61 | #include "store.h" |
| 62 | |
| 63 | |
| 64 | /* Identifiers for the different database types. */ |
| 65 | |
| 66 | #define type_retry 1 |
| 67 | #define type_wait 2 |
| 68 | #define type_misc 3 |
| 69 | #define type_callout 4 |
| 70 | #define type_ratelimit 5 |
| 71 | |
| 72 | |
| 73 | |
| 74 | |
| 75 | /************************************************* |
| 76 | * Berkeley DB error callback * |
| 77 | *************************************************/ |
| 78 | |
| 79 | /* For Berkeley DB >= 2, we can define a function to be called in case of DB |
| 80 | errors. This should help with debugging strange DB problems, e.g. getting "File |
| 81 | exists" when you try to open a db file. The API changed at release 4.3. */ |
| 82 | |
| 83 | #if defined(USE_DB) && defined(DB_VERSION_STRING) |
| 84 | void |
| 85 | #if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 3) |
| 86 | dbfn_bdb_error_callback(const DB_ENV *dbenv, const char *pfx, const char *msg) |
| 87 | { |
| 88 | dbenv = dbenv; |
| 89 | #else |
| 90 | dbfn_bdb_error_callback(const char *pfx, char *msg) |
| 91 | { |
| 92 | #endif |
| 93 | pfx = pfx; |
| 94 | printf("Berkeley DB error: %s\n", msg); |
| 95 | } |
| 96 | #endif |
| 97 | |
| 98 | |
| 99 | |
| 100 | /************************************************* |
| 101 | * SIGALRM handler * |
| 102 | *************************************************/ |
| 103 | |
| 104 | static int sigalrm_seen; |
| 105 | |
| 106 | void |
| 107 | sigalrm_handler(int sig) |
| 108 | { |
| 109 | sig = sig; /* Keep picky compilers happy */ |
| 110 | sigalrm_seen = 1; |
| 111 | } |
| 112 | |
| 113 | |
| 114 | |
| 115 | /************************************************* |
| 116 | * Output usage message and exit * |
| 117 | *************************************************/ |
| 118 | |
| 119 | static void |
| 120 | usage(uschar *name, uschar *options) |
| 121 | { |
| 122 | printf("Usage: exim_%s%s <spool-directory> <database-name>\n", name, options); |
| 123 | printf(" <database-name> = retry | misc | wait-<transport-name> | callout | ratelimit\n"); |
| 124 | exit(1); |
| 125 | } |
| 126 | |
| 127 | |
| 128 | |
| 129 | /************************************************* |
| 130 | * Sort out the command arguments * |
| 131 | *************************************************/ |
| 132 | |
| 133 | /* This function checks that there are exactly 2 arguments, and checks the |
| 134 | second of them to be sure it is a known database name. */ |
| 135 | |
| 136 | static int |
| 137 | check_args(int argc, uschar **argv, uschar *name, uschar *options) |
| 138 | { |
| 139 | if (argc == 3) |
| 140 | { |
| 141 | if (Ustrcmp(argv[2], "retry") == 0) return type_retry; |
| 142 | if (Ustrcmp(argv[2], "misc") == 0) return type_misc; |
| 143 | if (Ustrncmp(argv[2], "wait-", 5) == 0) return type_wait; |
| 144 | if (Ustrcmp(argv[2], "callout") == 0) return type_callout; |
| 145 | if (Ustrcmp(argv[2], "ratelimit") == 0) return type_ratelimit; |
| 146 | } |
| 147 | usage(name, options); |
| 148 | return -1; /* Never obeyed */ |
| 149 | } |
| 150 | |
| 151 | |
| 152 | |
| 153 | /************************************************* |
| 154 | * Handle attempts to write the log * |
| 155 | *************************************************/ |
| 156 | |
| 157 | /* The message gets written to stderr when log_write() is called from a |
| 158 | utility. The message always gets '\n' added on the end of it. These calls come |
| 159 | from modules such as store.c when things go drastically wrong (e.g. malloc() |
| 160 | failing). In normal use they won't get obeyed. |
| 161 | |
| 162 | Arguments: |
| 163 | selector not relevant when running a utility |
| 164 | flags not relevant when running a utility |
| 165 | format a printf() format |
| 166 | ... arguments for format |
| 167 | |
| 168 | Returns: nothing |
| 169 | */ |
| 170 | |
| 171 | void |
| 172 | log_write(unsigned int selector, int flags, char *format, ...) |
| 173 | { |
| 174 | va_list ap; |
| 175 | va_start(ap, format); |
| 176 | vfprintf(stderr, format, ap); |
| 177 | fprintf(stderr, "\n"); |
| 178 | va_end(ap); |
| 179 | selector = selector; /* Keep picky compilers happy */ |
| 180 | flags = flags; |
| 181 | } |
| 182 | |
| 183 | |
| 184 | |
| 185 | /************************************************* |
| 186 | * Format a time value for printing * |
| 187 | *************************************************/ |
| 188 | |
| 189 | static uschar time_buffer[sizeof("09-xxx-1999 hh:mm:ss ")]; |
| 190 | |
| 191 | uschar * |
| 192 | print_time(time_t t) |
| 193 | { |
| 194 | struct tm *tmstr = localtime(&t); |
| 195 | Ustrftime(time_buffer, sizeof(time_buffer), "%d-%b-%Y %H:%M:%S", tmstr); |
| 196 | return time_buffer; |
| 197 | } |
| 198 | |
| 199 | |
| 200 | |
| 201 | /************************************************* |
| 202 | * Format a cache value for printing * |
| 203 | *************************************************/ |
| 204 | |
| 205 | uschar * |
| 206 | print_cache(int value) |
| 207 | { |
| 208 | return (value == ccache_accept)? US"accept" : |
| 209 | (value == ccache_reject)? US"reject" : |
| 210 | US"unknown"; |
| 211 | } |
| 212 | |
| 213 | |
| 214 | #ifdef EXIM_FIXDB |
| 215 | /************************************************* |
| 216 | * Read time value * |
| 217 | *************************************************/ |
| 218 | |
| 219 | static time_t |
| 220 | read_time(uschar *s) |
| 221 | { |
| 222 | uschar *t = s; |
| 223 | int field = 0; |
| 224 | int value; |
| 225 | time_t now = time(NULL); |
| 226 | struct tm *tm = localtime(&now); |
| 227 | |
| 228 | tm->tm_sec = 0; |
| 229 | tm->tm_isdst = -1; |
| 230 | |
| 231 | for (t = s + Ustrlen(s) - 1; t >= s; t--) |
| 232 | { |
| 233 | if (*t == ':') continue; |
| 234 | if (!isdigit((uschar)*t)) return -1; |
| 235 | |
| 236 | value = *t - '0'; |
| 237 | if (--t >= s) |
| 238 | { |
| 239 | if (!isdigit((uschar)*t)) return -1; |
| 240 | value = value + (*t - '0')*10; |
| 241 | } |
| 242 | |
| 243 | switch (field++) |
| 244 | { |
| 245 | case 0: tm->tm_min = value; break; |
| 246 | case 1: tm->tm_hour = value; break; |
| 247 | case 2: tm->tm_mday = value; break; |
| 248 | case 3: tm->tm_mon = value - 1; break; |
| 249 | case 4: tm->tm_year = (value < 90)? value + 100 : value; break; |
| 250 | default: return -1; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | return mktime(tm); |
| 255 | } |
| 256 | #endif /* EXIM_FIXDB */ |
| 257 | |
| 258 | |
| 259 | |
| 260 | /************************************************* |
| 261 | * Open and lock a database file * |
| 262 | *************************************************/ |
| 263 | |
| 264 | /* This is a cut-down version from the function in dbfn.h that Exim itself |
| 265 | uses. We assume the database exists, and therefore give up if we cannot open |
| 266 | the lock file. |
| 267 | |
| 268 | Arguments: |
| 269 | spool The spool directory |
| 270 | name The single-component name of one of Exim's database files. |
| 271 | flags O_RDONLY or O_RDWR |
| 272 | dbblock Points to an open_db block to be filled in. |
| 273 | |
| 274 | Returns: NULL if the open failed, or the locking failed. |
| 275 | On success, dbblock is returned. This contains the dbm pointer and |
| 276 | the fd of the locked lock file. |
| 277 | */ |
| 278 | |
| 279 | static open_db * |
| 280 | dbfn_open(uschar *spool, uschar *name, int flags, open_db *dbblock) |
| 281 | { |
| 282 | int rc; |
| 283 | struct flock lock_data; |
| 284 | BOOL read_only = flags == O_RDONLY; |
| 285 | uschar buffer[256]; |
| 286 | |
| 287 | /* The first thing to do is to open a separate file on which to lock. This |
| 288 | ensures that Exim has exclusive use of the database before it even tries to |
| 289 | open it. If there is a database, there should be a lock file in existence. */ |
| 290 | |
| 291 | sprintf(CS buffer, "%s/db/%s.lockfile", spool, name); |
| 292 | |
| 293 | dbblock->lockfd = Uopen(buffer, flags, 0); |
| 294 | if (dbblock->lockfd < 0) |
| 295 | { |
| 296 | printf("** Failed to open database lock file %s: %s\n", buffer, |
| 297 | strerror(errno)); |
| 298 | return NULL; |
| 299 | } |
| 300 | |
| 301 | /* Now we must get a lock on the opened lock file; do this with a blocking |
| 302 | lock that times out. */ |
| 303 | |
| 304 | lock_data.l_type = read_only? F_RDLCK : F_WRLCK; |
| 305 | lock_data.l_whence = lock_data.l_start = lock_data.l_len = 0; |
| 306 | |
| 307 | sigalrm_seen = FALSE; |
| 308 | os_non_restarting_signal(SIGALRM, sigalrm_handler); |
| 309 | alarm(EXIMDB_LOCK_TIMEOUT); |
| 310 | rc = fcntl(dbblock->lockfd, F_SETLKW, &lock_data); |
| 311 | alarm(0); |
| 312 | |
| 313 | if (sigalrm_seen) errno = ETIMEDOUT; |
| 314 | if (rc < 0) |
| 315 | { |
| 316 | printf("** Failed to get %s lock for %s: %s", |
| 317 | ((flags & O_RDONLY) != 0)? "read" : "write", buffer, |
| 318 | (errno == ETIMEDOUT)? "timed out" : strerror(errno)); |
| 319 | (void)close(dbblock->lockfd); |
| 320 | return NULL; |
| 321 | } |
| 322 | |
| 323 | /* At this point we have an opened and locked separate lock file, that is, |
| 324 | exclusive access to the database, so we can go ahead and open it. */ |
| 325 | |
| 326 | sprintf(CS buffer, "%s/db/%s", spool, name); |
| 327 | EXIM_DBOPEN(buffer, flags, 0, &(dbblock->dbptr)); |
| 328 | |
| 329 | if (dbblock->dbptr == NULL) |
| 330 | { |
| 331 | printf("** Failed to open DBM file %s for %s:\n %s%s\n", buffer, |
| 332 | read_only? "reading" : "writing", strerror(errno), |
| 333 | #ifdef USE_DB |
| 334 | " (or Berkeley DB error while opening)" |
| 335 | #else |
| 336 | "" |
| 337 | #endif |
| 338 | ); |
| 339 | (void)close(dbblock->lockfd); |
| 340 | return NULL; |
| 341 | } |
| 342 | |
| 343 | return dbblock; |
| 344 | } |
| 345 | |
| 346 | |
| 347 | |
| 348 | |
| 349 | /************************************************* |
| 350 | * Unlock and close a database file * |
| 351 | *************************************************/ |
| 352 | |
| 353 | /* Closing a file automatically unlocks it, so after closing the database, just |
| 354 | close the lock file. |
| 355 | |
| 356 | Argument: a pointer to an open database block |
| 357 | Returns: nothing |
| 358 | */ |
| 359 | |
| 360 | static void |
| 361 | dbfn_close(open_db *dbblock) |
| 362 | { |
| 363 | EXIM_DBCLOSE(dbblock->dbptr); |
| 364 | (void)close(dbblock->lockfd); |
| 365 | } |
| 366 | |
| 367 | |
| 368 | |
| 369 | |
| 370 | /************************************************* |
| 371 | * Read from database file * |
| 372 | *************************************************/ |
| 373 | |
| 374 | /* Passing back the pointer unchanged is useless, because there is no guarantee |
| 375 | of alignment. Since all the records used by Exim need to be properly aligned to |
| 376 | pick out the timestamps, etc., do the copying centrally here. |
| 377 | |
| 378 | Arguments: |
| 379 | dbblock a pointer to an open database block |
| 380 | key the key of the record to be read |
| 381 | length where to put the length (or NULL if length not wanted) |
| 382 | |
| 383 | Returns: a pointer to the retrieved record, or |
| 384 | NULL if the record is not found |
| 385 | */ |
| 386 | |
| 387 | static void * |
| 388 | dbfn_read_with_length(open_db *dbblock, uschar *key, int *length) |
| 389 | { |
| 390 | void *yield; |
| 391 | EXIM_DATUM key_datum, result_datum; |
| 392 | |
| 393 | EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */ |
| 394 | EXIM_DATUM_INIT(result_datum); /* to be cleared before use. */ |
| 395 | EXIM_DATUM_DATA(key_datum) = CS key; |
| 396 | EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1; |
| 397 | |
| 398 | if (!EXIM_DBGET(dbblock->dbptr, key_datum, result_datum)) return NULL; |
| 399 | |
| 400 | yield = store_get(EXIM_DATUM_SIZE(result_datum)); |
| 401 | memcpy(yield, EXIM_DATUM_DATA(result_datum), EXIM_DATUM_SIZE(result_datum)); |
| 402 | if (length != NULL) *length = EXIM_DATUM_SIZE(result_datum); |
| 403 | |
| 404 | EXIM_DATUM_FREE(result_datum); /* Some DBM libs require freeing */ |
| 405 | return yield; |
| 406 | } |
| 407 | |
| 408 | |
| 409 | |
| 410 | #if defined(EXIM_TIDYDB) || defined(EXIM_FIXDB) |
| 411 | |
| 412 | /************************************************* |
| 413 | * Write to database file * |
| 414 | *************************************************/ |
| 415 | |
| 416 | /* |
| 417 | Arguments: |
| 418 | dbblock a pointer to an open database block |
| 419 | key the key of the record to be written |
| 420 | ptr a pointer to the record to be written |
| 421 | length the length of the record to be written |
| 422 | |
| 423 | Returns: the yield of the underlying dbm or db "write" function. If this |
| 424 | is dbm, the value is zero for OK. |
| 425 | */ |
| 426 | |
| 427 | static int |
| 428 | dbfn_write(open_db *dbblock, uschar *key, void *ptr, int length) |
| 429 | { |
| 430 | EXIM_DATUM key_datum, value_datum; |
| 431 | dbdata_generic *gptr = (dbdata_generic *)ptr; |
| 432 | gptr->time_stamp = time(NULL); |
| 433 | |
| 434 | EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */ |
| 435 | EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */ |
| 436 | EXIM_DATUM_DATA(key_datum) = CS key; |
| 437 | EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1; |
| 438 | EXIM_DATUM_DATA(value_datum) = CS ptr; |
| 439 | EXIM_DATUM_SIZE(value_datum) = length; |
| 440 | return EXIM_DBPUT(dbblock->dbptr, key_datum, value_datum); |
| 441 | } |
| 442 | |
| 443 | |
| 444 | |
| 445 | /************************************************* |
| 446 | * Delete record from database file * |
| 447 | *************************************************/ |
| 448 | |
| 449 | /* |
| 450 | Arguments: |
| 451 | dbblock a pointer to an open database block |
| 452 | key the key of the record to be deleted |
| 453 | |
| 454 | Returns: the yield of the underlying dbm or db "delete" function. |
| 455 | */ |
| 456 | |
| 457 | static int |
| 458 | dbfn_delete(open_db *dbblock, uschar *key) |
| 459 | { |
| 460 | EXIM_DATUM key_datum; |
| 461 | EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require clearing */ |
| 462 | EXIM_DATUM_DATA(key_datum) = CS key; |
| 463 | EXIM_DATUM_SIZE(key_datum) = Ustrlen(key) + 1; |
| 464 | return EXIM_DBDEL(dbblock->dbptr, key_datum); |
| 465 | } |
| 466 | |
| 467 | #endif /* EXIM_TIDYDB || EXIM_FIXDB */ |
| 468 | |
| 469 | |
| 470 | |
| 471 | #if defined(EXIM_DUMPDB) || defined(EXIM_TIDYDB) |
| 472 | /************************************************* |
| 473 | * Scan the keys of a database file * |
| 474 | *************************************************/ |
| 475 | |
| 476 | /* |
| 477 | Arguments: |
| 478 | dbblock a pointer to an open database block |
| 479 | start TRUE if starting a new scan |
| 480 | FALSE if continuing with the current scan |
| 481 | cursor a pointer to a pointer to a cursor anchor, for those dbm libraries |
| 482 | that use the notion of a cursor |
| 483 | |
| 484 | Returns: the next record from the file, or |
| 485 | NULL if there are no more |
| 486 | */ |
| 487 | |
| 488 | static uschar * |
| 489 | dbfn_scan(open_db *dbblock, BOOL start, EXIM_CURSOR **cursor) |
| 490 | { |
| 491 | EXIM_DATUM key_datum, value_datum; |
| 492 | uschar *yield; |
| 493 | value_datum = value_datum; /* dummy; not all db libraries use this */ |
| 494 | |
| 495 | /* Some dbm require an initialization */ |
| 496 | |
| 497 | if (start) EXIM_DBCREATE_CURSOR(dbblock->dbptr, cursor); |
| 498 | |
| 499 | EXIM_DATUM_INIT(key_datum); /* Some DBM libraries require the datum */ |
| 500 | EXIM_DATUM_INIT(value_datum); /* to be cleared before use. */ |
| 501 | |
| 502 | yield = (EXIM_DBSCAN(dbblock->dbptr, key_datum, value_datum, start, *cursor))? |
| 503 | US EXIM_DATUM_DATA(key_datum) : NULL; |
| 504 | |
| 505 | /* Some dbm require a termination */ |
| 506 | |
| 507 | if (!yield) EXIM_DBDELETE_CURSOR(*cursor); |
| 508 | return yield; |
| 509 | } |
| 510 | #endif /* EXIM_DUMPDB || EXIM_TIDYDB */ |
| 511 | |
| 512 | |
| 513 | |
| 514 | #ifdef EXIM_DUMPDB |
| 515 | /************************************************* |
| 516 | * The exim_dumpdb main program * |
| 517 | *************************************************/ |
| 518 | |
| 519 | int |
| 520 | main(int argc, char **cargv) |
| 521 | { |
| 522 | int dbdata_type = 0; |
| 523 | int yield = 0; |
| 524 | open_db dbblock; |
| 525 | open_db *dbm; |
| 526 | EXIM_CURSOR *cursor; |
| 527 | uschar **argv = USS cargv; |
| 528 | uschar *key; |
| 529 | uschar keybuffer[1024]; |
| 530 | |
| 531 | /* Check the arguments, and open the database */ |
| 532 | |
| 533 | dbdata_type = check_args(argc, argv, US"dumpdb", US""); |
| 534 | dbm = dbfn_open(argv[1], argv[2], O_RDONLY, &dbblock); |
| 535 | if (dbm == NULL) exit(1); |
| 536 | |
| 537 | /* Scan the file, formatting the information for each entry. Note |
| 538 | that data is returned in a malloc'ed block, in order that it be |
| 539 | correctly aligned. */ |
| 540 | |
| 541 | key = dbfn_scan(dbm, TRUE, &cursor); |
| 542 | while (key != NULL) |
| 543 | { |
| 544 | dbdata_retry *retry; |
| 545 | dbdata_wait *wait; |
| 546 | dbdata_callout_cache *callout; |
| 547 | dbdata_ratelimit *ratelimit; |
| 548 | int count_bad = 0; |
| 549 | int i, length; |
| 550 | uschar *t; |
| 551 | uschar name[MESSAGE_ID_LENGTH + 1]; |
| 552 | void *value; |
| 553 | |
| 554 | /* Keep a copy of the key separate, as in some DBM's the pointer is into data |
| 555 | which might change. */ |
| 556 | |
| 557 | if (Ustrlen(key) > sizeof(keybuffer) - 1) |
| 558 | { |
| 559 | printf("**** Overlong key encountered: %s\n", key); |
| 560 | return 1; |
| 561 | } |
| 562 | Ustrcpy(keybuffer, key); |
| 563 | value = dbfn_read_with_length(dbm, keybuffer, &length); |
| 564 | |
| 565 | if (value == NULL) |
| 566 | fprintf(stderr, "**** Entry \"%s\" was in the key scan, but the record " |
| 567 | "was not found in the file - something is wrong!\n", |
| 568 | CS keybuffer); |
| 569 | else |
| 570 | { |
| 571 | /* Note: don't use print_time more than once in one statement, since |
| 572 | it uses a single buffer. */ |
| 573 | |
| 574 | switch(dbdata_type) |
| 575 | { |
| 576 | case type_retry: |
| 577 | retry = (dbdata_retry *)value; |
| 578 | printf(" %s %d %d %s\n%s ", keybuffer, retry->basic_errno, |
| 579 | retry->more_errno, retry->text, |
| 580 | print_time(retry->first_failed)); |
| 581 | printf("%s ", print_time(retry->last_try)); |
| 582 | printf("%s %s\n", print_time(retry->next_try), |
| 583 | (retry->expired)? "*" : ""); |
| 584 | break; |
| 585 | |
| 586 | case type_wait: |
| 587 | wait = (dbdata_wait *)value; |
| 588 | printf("%s ", keybuffer); |
| 589 | t = wait->text; |
| 590 | name[MESSAGE_ID_LENGTH] = 0; |
| 591 | |
| 592 | if (wait->count > WAIT_NAME_MAX) |
| 593 | { |
| 594 | fprintf(stderr, |
| 595 | "**** Data for %s corrupted\n count=%d=0x%x max=%d\n", |
| 596 | CS keybuffer, wait->count, wait->count, WAIT_NAME_MAX); |
| 597 | wait->count = WAIT_NAME_MAX; |
| 598 | yield = count_bad = 1; |
| 599 | } |
| 600 | for (i = 1; i <= wait->count; i++) |
| 601 | { |
| 602 | Ustrncpy(name, t, MESSAGE_ID_LENGTH); |
| 603 | if (count_bad && name[0] == 0) break; |
| 604 | if (Ustrlen(name) != MESSAGE_ID_LENGTH || |
| 605 | Ustrspn(name, "0123456789" |
| 606 | "abcdefghijklmnopqrstuvwxyz" |
| 607 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH) |
| 608 | { |
| 609 | int j; |
| 610 | fprintf(stderr, |
| 611 | "**** Data for %s corrupted: bad character in message id\n", |
| 612 | CS keybuffer); |
| 613 | for (j = 0; j < MESSAGE_ID_LENGTH; j++) |
| 614 | fprintf(stderr, "%02x ", name[j]); |
| 615 | fprintf(stderr, "\n"); |
| 616 | yield = 1; |
| 617 | break; |
| 618 | } |
| 619 | printf("%s ", name); |
| 620 | t += MESSAGE_ID_LENGTH; |
| 621 | } |
| 622 | printf("\n"); |
| 623 | break; |
| 624 | |
| 625 | case type_misc: |
| 626 | printf("%s %s\n", print_time(((dbdata_generic *)value)->time_stamp), |
| 627 | keybuffer); |
| 628 | break; |
| 629 | |
| 630 | case type_callout: |
| 631 | callout = (dbdata_callout_cache *)value; |
| 632 | |
| 633 | /* New-style address record */ |
| 634 | |
| 635 | if (length == sizeof(dbdata_callout_cache_address)) |
| 636 | { |
| 637 | printf("%s %s callout=%s\n", |
| 638 | print_time(((dbdata_generic *)value)->time_stamp), |
| 639 | keybuffer, |
| 640 | print_cache(callout->result)); |
| 641 | } |
| 642 | |
| 643 | /* New-style domain record */ |
| 644 | |
| 645 | else if (length == sizeof(dbdata_callout_cache)) |
| 646 | { |
| 647 | printf("%s %s callout=%s postmaster=%s", |
| 648 | print_time(((dbdata_generic *)value)->time_stamp), |
| 649 | keybuffer, |
| 650 | print_cache(callout->result), |
| 651 | print_cache(callout->postmaster_result)); |
| 652 | if (callout->postmaster_result != ccache_unknown) |
| 653 | printf(" (%s)", print_time(callout->postmaster_stamp)); |
| 654 | printf(" random=%s", print_cache(callout->random_result)); |
| 655 | if (callout->random_result != ccache_unknown) |
| 656 | printf(" (%s)", print_time(callout->random_stamp)); |
| 657 | printf("\n"); |
| 658 | } |
| 659 | |
| 660 | /* Old-style domain record, without separate timestamps. This code can |
| 661 | eventually be thrown away, say in 5 years' time (it's now Feb 2003). */ |
| 662 | |
| 663 | else |
| 664 | { |
| 665 | printf("%s %s callout=%s postmaster=%s random=%s\n", |
| 666 | print_time(((dbdata_generic *)value)->time_stamp), |
| 667 | keybuffer, |
| 668 | print_cache(callout->result), |
| 669 | print_cache(callout->postmaster_result), |
| 670 | print_cache(callout->random_result)); |
| 671 | } |
| 672 | |
| 673 | break; |
| 674 | |
| 675 | case type_ratelimit: |
| 676 | ratelimit = (dbdata_ratelimit *)value; |
| 677 | |
| 678 | printf("%s.%06d rate: %10.3f key: %s\n", |
| 679 | print_time(ratelimit->time_stamp), ratelimit->time_usec, |
| 680 | ratelimit->rate, keybuffer); |
| 681 | |
| 682 | break; |
| 683 | } |
| 684 | store_reset(value); |
| 685 | } |
| 686 | key = dbfn_scan(dbm, FALSE, &cursor); |
| 687 | } |
| 688 | |
| 689 | dbfn_close(dbm); |
| 690 | return yield; |
| 691 | } |
| 692 | |
| 693 | #endif /* EXIM_DUMPDB */ |
| 694 | |
| 695 | |
| 696 | |
| 697 | |
| 698 | #ifdef EXIM_FIXDB |
| 699 | /************************************************* |
| 700 | * The exim_fixdb main program * |
| 701 | *************************************************/ |
| 702 | |
| 703 | /* In order not to hold the database lock any longer than is necessary, each |
| 704 | operation on the database uses a separate open/close call. This is expensive, |
| 705 | but then using this utility is not expected to be very common. Its main use is |
| 706 | to provide a way of patching up hints databases in order to run tests. |
| 707 | |
| 708 | Syntax of commands: |
| 709 | |
| 710 | (1) <record name> |
| 711 | This causes the data from the given record to be displayed, or "not found" |
| 712 | to be output. Note that in the retry database, destination names are |
| 713 | preceded by R: or T: for router or transport retry info. |
| 714 | |
| 715 | (2) <record name> d |
| 716 | This causes the given record to be deleted or "not found" to be output. |
| 717 | |
| 718 | (3) <record name> <field number> <value> |
| 719 | This sets the given value into the given field, identified by a number |
| 720 | which is output by the display command. Not all types of record can |
| 721 | be changed. |
| 722 | |
| 723 | (4) q |
| 724 | This exits from exim_fixdb. |
| 725 | |
| 726 | If the record name is omitted from (2) or (3), the previously used record name |
| 727 | is re-used. */ |
| 728 | |
| 729 | |
| 730 | int main(int argc, char **cargv) |
| 731 | { |
| 732 | int dbdata_type; |
| 733 | uschar **argv = USS cargv; |
| 734 | uschar buffer[256]; |
| 735 | uschar name[256]; |
| 736 | void *reset_point = store_get(0); |
| 737 | |
| 738 | name[0] = 0; /* No name set */ |
| 739 | |
| 740 | /* Sort out the database type, verify what we are working on and then process |
| 741 | user requests */ |
| 742 | |
| 743 | dbdata_type = check_args(argc, argv, US"fixdb", US""); |
| 744 | printf("Modifying Exim hints database %s/db/%s\n", argv[1], argv[2]); |
| 745 | |
| 746 | for(;;) |
| 747 | { |
| 748 | open_db dbblock; |
| 749 | open_db *dbm; |
| 750 | void *record; |
| 751 | dbdata_retry *retry; |
| 752 | dbdata_wait *wait; |
| 753 | dbdata_callout_cache *callout; |
| 754 | dbdata_ratelimit *ratelimit; |
| 755 | int i, oldlength; |
| 756 | uschar *t; |
| 757 | uschar field[256], value[256]; |
| 758 | |
| 759 | store_reset(reset_point); |
| 760 | |
| 761 | printf("> "); |
| 762 | if (Ufgets(buffer, 256, stdin) == NULL) break; |
| 763 | |
| 764 | buffer[Ustrlen(buffer)-1] = 0; |
| 765 | field[0] = value[0] = 0; |
| 766 | |
| 767 | /* If the buffer contains just one digit, or just consists of "d", use the |
| 768 | previous name for an update. */ |
| 769 | |
| 770 | if ((isdigit((uschar)buffer[0]) && (buffer[1] == ' ' || buffer[1] == '\0')) |
| 771 | || Ustrcmp(buffer, "d") == 0) |
| 772 | { |
| 773 | if (name[0] == 0) |
| 774 | { |
| 775 | printf("No previous record name is set\n"); |
| 776 | continue; |
| 777 | } |
| 778 | (void)sscanf(CS buffer, "%s %s", field, value); |
| 779 | } |
| 780 | else |
| 781 | { |
| 782 | name[0] = 0; |
| 783 | (void)sscanf(CS buffer, "%s %s %s", name, field, value); |
| 784 | } |
| 785 | |
| 786 | /* Handle an update request */ |
| 787 | |
| 788 | if (field[0] != 0) |
| 789 | { |
| 790 | int verify = 1; |
| 791 | dbm = dbfn_open(argv[1], argv[2], O_RDWR, &dbblock); |
| 792 | if (dbm == NULL) continue; |
| 793 | |
| 794 | if (Ustrcmp(field, "d") == 0) |
| 795 | { |
| 796 | if (value[0] != 0) printf("unexpected value after \"d\"\n"); |
| 797 | else printf("%s\n", (dbfn_delete(dbm, name) < 0)? |
| 798 | "not found" : "deleted"); |
| 799 | dbfn_close(dbm); |
| 800 | continue; |
| 801 | } |
| 802 | |
| 803 | else if (isdigit((uschar)field[0])) |
| 804 | { |
| 805 | int fieldno = Uatoi(field); |
| 806 | if (value[0] == 0) |
| 807 | { |
| 808 | printf("value missing\n"); |
| 809 | dbfn_close(dbm); |
| 810 | continue; |
| 811 | } |
| 812 | else |
| 813 | { |
| 814 | record = dbfn_read_with_length(dbm, name, &oldlength); |
| 815 | if (record == NULL) printf("not found\n"); else |
| 816 | { |
| 817 | time_t tt; |
| 818 | int length = 0; /* Stops compiler warning */ |
| 819 | |
| 820 | switch(dbdata_type) |
| 821 | { |
| 822 | case type_retry: |
| 823 | retry = (dbdata_retry *)record; |
| 824 | length = sizeof(dbdata_retry) + Ustrlen(retry->text); |
| 825 | |
| 826 | switch(fieldno) |
| 827 | { |
| 828 | case 0: |
| 829 | retry->basic_errno = Uatoi(value); |
| 830 | break; |
| 831 | |
| 832 | case 1: |
| 833 | retry->more_errno = Uatoi(value); |
| 834 | break; |
| 835 | |
| 836 | case 2: |
| 837 | if ((tt = read_time(value)) > 0) retry->first_failed = tt; |
| 838 | else printf("bad time value\n"); |
| 839 | break; |
| 840 | |
| 841 | case 3: |
| 842 | if ((tt = read_time(value)) > 0) retry->last_try = tt; |
| 843 | else printf("bad time value\n"); |
| 844 | break; |
| 845 | |
| 846 | case 4: |
| 847 | if ((tt = read_time(value)) > 0) retry->next_try = tt; |
| 848 | else printf("bad time value\n"); |
| 849 | break; |
| 850 | |
| 851 | case 5: |
| 852 | if (Ustrcmp(value, "yes") == 0) retry->expired = TRUE; |
| 853 | else if (Ustrcmp(value, "no") == 0) retry->expired = FALSE; |
| 854 | else printf("\"yes\" or \"no\" expected=n"); |
| 855 | break; |
| 856 | |
| 857 | default: |
| 858 | printf("unknown field number\n"); |
| 859 | verify = 0; |
| 860 | break; |
| 861 | } |
| 862 | break; |
| 863 | |
| 864 | case type_wait: |
| 865 | printf("Can't change contents of wait database record\n"); |
| 866 | break; |
| 867 | |
| 868 | case type_misc: |
| 869 | printf("Can't change contents of misc database record\n"); |
| 870 | break; |
| 871 | |
| 872 | case type_callout: |
| 873 | callout = (dbdata_callout_cache *)record; |
| 874 | length = sizeof(dbdata_callout_cache); |
| 875 | switch(fieldno) |
| 876 | { |
| 877 | case 0: |
| 878 | callout->result = Uatoi(value); |
| 879 | break; |
| 880 | |
| 881 | case 1: |
| 882 | callout->postmaster_result = Uatoi(value); |
| 883 | break; |
| 884 | |
| 885 | case 2: |
| 886 | callout->random_result = Uatoi(value); |
| 887 | break; |
| 888 | |
| 889 | default: |
| 890 | printf("unknown field number\n"); |
| 891 | verify = 0; |
| 892 | break; |
| 893 | } |
| 894 | break; |
| 895 | |
| 896 | case type_ratelimit: |
| 897 | ratelimit = (dbdata_ratelimit *)record; |
| 898 | length = sizeof(dbdata_ratelimit); |
| 899 | switch(fieldno) |
| 900 | { |
| 901 | case 0: |
| 902 | if ((tt = read_time(value)) > 0) ratelimit->time_stamp = tt; |
| 903 | else printf("bad time value\n"); |
| 904 | break; |
| 905 | |
| 906 | case 1: |
| 907 | ratelimit->time_usec = Uatoi(value); |
| 908 | break; |
| 909 | |
| 910 | case 2: |
| 911 | ratelimit->rate = Ustrtod(value, NULL); |
| 912 | break; |
| 913 | |
| 914 | default: |
| 915 | printf("unknown field number\n"); |
| 916 | verify = 0; |
| 917 | break; |
| 918 | } |
| 919 | break; |
| 920 | } |
| 921 | |
| 922 | dbfn_write(dbm, name, record, length); |
| 923 | } |
| 924 | } |
| 925 | } |
| 926 | |
| 927 | else |
| 928 | { |
| 929 | printf("field number or d expected\n"); |
| 930 | verify = 0; |
| 931 | } |
| 932 | |
| 933 | dbfn_close(dbm); |
| 934 | if (!verify) continue; |
| 935 | } |
| 936 | |
| 937 | /* The "name" q causes an exit */ |
| 938 | |
| 939 | else if (Ustrcmp(name, "q") == 0) return 0; |
| 940 | |
| 941 | /* Handle a read request, or verify after an update. */ |
| 942 | |
| 943 | dbm = dbfn_open(argv[1], argv[2], O_RDONLY, &dbblock); |
| 944 | if (dbm == NULL) continue; |
| 945 | |
| 946 | record = dbfn_read_with_length(dbm, name, &oldlength); |
| 947 | if (record == NULL) |
| 948 | { |
| 949 | printf("record %s not found\n", name); |
| 950 | name[0] = 0; |
| 951 | } |
| 952 | else |
| 953 | { |
| 954 | int count_bad = 0; |
| 955 | printf("%s\n", CS print_time(((dbdata_generic *)record)->time_stamp)); |
| 956 | switch(dbdata_type) |
| 957 | { |
| 958 | case type_retry: |
| 959 | retry = (dbdata_retry *)record; |
| 960 | printf("0 error number: %d %s\n", retry->basic_errno, retry->text); |
| 961 | printf("1 extra data: %d\n", retry->more_errno); |
| 962 | printf("2 first failed: %s\n", print_time(retry->first_failed)); |
| 963 | printf("3 last try: %s\n", print_time(retry->last_try)); |
| 964 | printf("4 next try: %s\n", print_time(retry->next_try)); |
| 965 | printf("5 expired: %s\n", (retry->expired)? "yes" : "no"); |
| 966 | break; |
| 967 | |
| 968 | case type_wait: |
| 969 | wait = (dbdata_wait *)record; |
| 970 | t = wait->text; |
| 971 | printf("Sequence: %d\n", wait->sequence); |
| 972 | if (wait->count > WAIT_NAME_MAX) |
| 973 | { |
| 974 | printf("**** Data corrupted: count=%d=0x%x max=%d ****\n", wait->count, |
| 975 | wait->count, WAIT_NAME_MAX); |
| 976 | wait->count = WAIT_NAME_MAX; |
| 977 | count_bad = 1; |
| 978 | } |
| 979 | for (i = 1; i <= wait->count; i++) |
| 980 | { |
| 981 | Ustrncpy(value, t, MESSAGE_ID_LENGTH); |
| 982 | value[MESSAGE_ID_LENGTH] = 0; |
| 983 | if (count_bad && value[0] == 0) break; |
| 984 | if (Ustrlen(value) != MESSAGE_ID_LENGTH || |
| 985 | Ustrspn(value, "0123456789" |
| 986 | "abcdefghijklmnopqrstuvwxyz" |
| 987 | "ABCDEFGHIJKLMNOPQRSTUVWXYZ-") != MESSAGE_ID_LENGTH) |
| 988 | { |
| 989 | int j; |
| 990 | printf("\n**** Data corrupted: bad character in message id ****\n"); |
| 991 | for (j = 0; j < MESSAGE_ID_LENGTH; j++) |
| 992 | printf("%02x ", value[j]); |
| 993 | printf("\n"); |
| 994 | break; |
| 995 | } |
| 996 | printf("%s ", value); |
| 997 | t += MESSAGE_ID_LENGTH; |
| 998 | } |
| 999 | printf("\n"); |
| 1000 | break; |
| 1001 | |
| 1002 | case type_misc: |
| 1003 | break; |
| 1004 | |
| 1005 | case type_callout: |
| 1006 | callout = (dbdata_callout_cache *)record; |
| 1007 | printf("0 callout: %s (%d)\n", print_cache(callout->result), |
| 1008 | callout->result); |
| 1009 | if (oldlength > sizeof(dbdata_callout_cache_address)) |
| 1010 | { |
| 1011 | printf("1 postmaster: %s (%d)\n", print_cache(callout->postmaster_result), |
| 1012 | callout->postmaster_result); |
| 1013 | printf("2 random: %s (%d)\n", print_cache(callout->random_result), |
| 1014 | callout->random_result); |
| 1015 | } |
| 1016 | break; |
| 1017 | |
| 1018 | case type_ratelimit: |
| 1019 | ratelimit = (dbdata_ratelimit *)record; |
| 1020 | printf("0 time stamp: %s\n", print_time(ratelimit->time_stamp)); |
| 1021 | printf("1 fract. time: .%06d\n", ratelimit->time_usec); |
| 1022 | printf("2 sender rate: % .3f\n", ratelimit->rate); |
| 1023 | break; |
| 1024 | } |
| 1025 | } |
| 1026 | |
| 1027 | /* The database is closed after each request */ |
| 1028 | |
| 1029 | dbfn_close(dbm); |
| 1030 | } |
| 1031 | |
| 1032 | printf("\n"); |
| 1033 | return 0; |
| 1034 | } |
| 1035 | |
| 1036 | #endif /* EXIM_FIXDB */ |
| 1037 | |
| 1038 | |
| 1039 | |
| 1040 | #ifdef EXIM_TIDYDB |
| 1041 | /************************************************* |
| 1042 | * The exim_tidydb main program * |
| 1043 | *************************************************/ |
| 1044 | |
| 1045 | |
| 1046 | /* Utility program to tidy the contents of an exim database file. There is one |
| 1047 | option: |
| 1048 | |
| 1049 | -t <time> expiry time for old records - default 30 days |
| 1050 | |
| 1051 | For backwards compatibility, an -f option is recognized and ignored. (It used |
| 1052 | to request a "full" tidy. This version always does the whole job.) */ |
| 1053 | |
| 1054 | |
| 1055 | typedef struct key_item { |
| 1056 | struct key_item *next; |
| 1057 | uschar key[1]; |
| 1058 | } key_item; |
| 1059 | |
| 1060 | |
| 1061 | int main(int argc, char **cargv) |
| 1062 | { |
| 1063 | struct stat statbuf; |
| 1064 | int maxkeep = 30 * 24 * 60 * 60; |
| 1065 | int dbdata_type, i, oldest, path_len; |
| 1066 | key_item *keychain = NULL; |
| 1067 | void *reset_point; |
| 1068 | open_db dbblock; |
| 1069 | open_db *dbm; |
| 1070 | EXIM_CURSOR *cursor; |
| 1071 | uschar **argv = USS cargv; |
| 1072 | uschar buffer[256]; |
| 1073 | uschar *key; |
| 1074 | |
| 1075 | /* Scan the options */ |
| 1076 | |
| 1077 | for (i = 1; i < argc; i++) |
| 1078 | { |
| 1079 | if (argv[i][0] != '-') break; |
| 1080 | if (Ustrcmp(argv[i], "-f") == 0) continue; |
| 1081 | if (Ustrcmp(argv[i], "-t") == 0) |
| 1082 | { |
| 1083 | uschar *s; |
| 1084 | s = argv[++i]; |
| 1085 | maxkeep = 0; |
| 1086 | while (*s != 0) |
| 1087 | { |
| 1088 | int value, count; |
| 1089 | if (!isdigit(*s)) usage(US"tidydb", US" [-t <time>]"); |
| 1090 | (void)sscanf(CS s, "%d%n", &value, &count); |
| 1091 | s += count; |
| 1092 | switch (*s) |
| 1093 | { |
| 1094 | case 'w': value *= 7; |
| 1095 | case 'd': value *= 24; |
| 1096 | case 'h': value *= 60; |
| 1097 | case 'm': value *= 60; |
| 1098 | case 's': s++; |
| 1099 | break; |
| 1100 | default: usage(US"tidydb", US" [-t <time>]"); |
| 1101 | } |
| 1102 | maxkeep += value; |
| 1103 | } |
| 1104 | } |
| 1105 | else usage(US"tidydb", US" [-t <time>]"); |
| 1106 | } |
| 1107 | |
| 1108 | /* Adjust argument values and process arguments */ |
| 1109 | |
| 1110 | argc -= --i; |
| 1111 | argv += i; |
| 1112 | |
| 1113 | dbdata_type = check_args(argc, argv, US"tidydb", US" [-t <time>]"); |
| 1114 | |
| 1115 | /* Compute the oldest keep time, verify what we are doing, and open the |
| 1116 | database */ |
| 1117 | |
| 1118 | oldest = time(NULL) - maxkeep; |
| 1119 | printf("Tidying Exim hints database %s/db/%s\n", argv[1], argv[2]); |
| 1120 | |
| 1121 | dbm = dbfn_open(argv[1], argv[2], O_RDWR, &dbblock); |
| 1122 | if (dbm == NULL) exit(1); |
| 1123 | |
| 1124 | /* Prepare for building file names */ |
| 1125 | |
| 1126 | sprintf(CS buffer, "%s/input/", argv[1]); |
| 1127 | path_len = Ustrlen(buffer); |
| 1128 | |
| 1129 | |
| 1130 | /* It appears, by experiment, that it is a bad idea to make changes |
| 1131 | to the file while scanning it. Pity the man page doesn't warn you about that. |
| 1132 | Therefore, we scan and build a list of all the keys. Then we use that to |
| 1133 | read the records and possibly update them. */ |
| 1134 | |
| 1135 | key = dbfn_scan(dbm, TRUE, &cursor); |
| 1136 | while (key != NULL) |
| 1137 | { |
| 1138 | key_item *k = store_get(sizeof(key_item) + Ustrlen(key)); |
| 1139 | k->next = keychain; |
| 1140 | keychain = k; |
| 1141 | Ustrcpy(k->key, key); |
| 1142 | key = dbfn_scan(dbm, FALSE, &cursor); |
| 1143 | } |
| 1144 | |
| 1145 | /* Now scan the collected keys and operate on the records, resetting |
| 1146 | the store each time round. */ |
| 1147 | |
| 1148 | reset_point = store_get(0); |
| 1149 | |
| 1150 | while (keychain != NULL) |
| 1151 | { |
| 1152 | dbdata_generic *value; |
| 1153 | |
| 1154 | store_reset(reset_point); |
| 1155 | key = keychain->key; |
| 1156 | keychain = keychain->next; |
| 1157 | value = dbfn_read_with_length(dbm, key, NULL); |
| 1158 | |
| 1159 | /* A continuation record may have been deleted or renamed already, so |
| 1160 | non-existence is not serious. */ |
| 1161 | |
| 1162 | if (value == NULL) continue; |
| 1163 | |
| 1164 | /* Delete if too old */ |
| 1165 | |
| 1166 | if (value->time_stamp < oldest) |
| 1167 | { |
| 1168 | printf("deleted %s (too old)\n", key); |
| 1169 | dbfn_delete(dbm, key); |
| 1170 | continue; |
| 1171 | } |
| 1172 | |
| 1173 | /* Do database-specific tidying for wait databases, and message- |
| 1174 | specific tidying for the retry database. */ |
| 1175 | |
| 1176 | if (dbdata_type == type_wait) |
| 1177 | { |
| 1178 | dbdata_wait *wait = (dbdata_wait *)value; |
| 1179 | BOOL update = FALSE; |
| 1180 | |
| 1181 | /* Leave corrupt records alone */ |
| 1182 | |
| 1183 | if (wait->count > WAIT_NAME_MAX) |
| 1184 | { |
| 1185 | printf("**** Data for %s corrupted\n count=%d=0x%x max=%d\n", |
| 1186 | key, wait->count, wait->count, WAIT_NAME_MAX); |
| 1187 | continue; |
| 1188 | } |
| 1189 | |
| 1190 | /* Loop for renamed continuation records. For each message id, |
| 1191 | check to see if the message exists, and if not, remove its entry |
| 1192 | from the record. Because of the possibility of split input directories, |
| 1193 | we must look in both possible places for a -D file. */ |
| 1194 | |
| 1195 | for (;;) |
| 1196 | { |
| 1197 | int offset; |
| 1198 | int length = wait->count * MESSAGE_ID_LENGTH; |
| 1199 | |
| 1200 | for (offset = length - MESSAGE_ID_LENGTH; |
| 1201 | offset >= 0; offset -= MESSAGE_ID_LENGTH) |
| 1202 | { |
| 1203 | Ustrncpy(buffer+path_len, wait->text + offset, MESSAGE_ID_LENGTH); |
| 1204 | sprintf(CS(buffer+path_len + MESSAGE_ID_LENGTH), "-D"); |
| 1205 | |
| 1206 | if (Ustat(buffer, &statbuf) != 0) |
| 1207 | { |
| 1208 | buffer[path_len] = wait->text[offset+5]; |
| 1209 | buffer[path_len+1] = '/'; |
| 1210 | Ustrncpy(buffer+path_len+2, wait->text + offset, MESSAGE_ID_LENGTH); |
| 1211 | sprintf(CS(buffer+path_len+2 + MESSAGE_ID_LENGTH), "-D"); |
| 1212 | |
| 1213 | if (Ustat(buffer, &statbuf) != 0) |
| 1214 | { |
| 1215 | int left = length - offset - MESSAGE_ID_LENGTH; |
| 1216 | if (left > 0) Ustrncpy(wait->text + offset, |
| 1217 | wait->text + offset + MESSAGE_ID_LENGTH, left); |
| 1218 | wait->count--; |
| 1219 | length -= MESSAGE_ID_LENGTH; |
| 1220 | update = TRUE; |
| 1221 | } |
| 1222 | } |
| 1223 | } |
| 1224 | |
| 1225 | /* If record is empty and the main record, either delete it or rename |
| 1226 | the next continuation, repeating if that is also empty. */ |
| 1227 | |
| 1228 | if (wait->count == 0 && Ustrchr(key, ':') == NULL) |
| 1229 | { |
| 1230 | while (wait->count == 0 && wait->sequence > 0) |
| 1231 | { |
| 1232 | uschar newkey[256]; |
| 1233 | dbdata_generic *newvalue; |
| 1234 | sprintf(CS newkey, "%s:%d", key, wait->sequence - 1); |
| 1235 | newvalue = dbfn_read_with_length(dbm, newkey, NULL); |
| 1236 | if (newvalue != NULL) |
| 1237 | { |
| 1238 | value = newvalue; |
| 1239 | wait = (dbdata_wait *)newvalue; |
| 1240 | dbfn_delete(dbm, newkey); |
| 1241 | printf("renamed %s\n", newkey); |
| 1242 | update = TRUE; |
| 1243 | } |
| 1244 | else wait->sequence--; |
| 1245 | } |
| 1246 | |
| 1247 | /* If we have ended up with an empty main record, delete it |
| 1248 | and break the loop. Otherwise the new record will be scanned. */ |
| 1249 | |
| 1250 | if (wait->count == 0 && wait->sequence == 0) |
| 1251 | { |
| 1252 | dbfn_delete(dbm, key); |
| 1253 | printf("deleted %s (empty)\n", key); |
| 1254 | update = FALSE; |
| 1255 | break; |
| 1256 | } |
| 1257 | } |
| 1258 | |
| 1259 | /* If not an empty main record, break the loop */ |
| 1260 | |
| 1261 | else break; |
| 1262 | } |
| 1263 | |
| 1264 | /* Re-write the record if required */ |
| 1265 | |
| 1266 | if (update) |
| 1267 | { |
| 1268 | printf("updated %s\n", key); |
| 1269 | dbfn_write(dbm, key, wait, sizeof(dbdata_wait) + |
| 1270 | wait->count * MESSAGE_ID_LENGTH); |
| 1271 | } |
| 1272 | } |
| 1273 | |
| 1274 | /* If a retry record's key ends with a message-id, check that that message |
| 1275 | still exists; if not, remove this record. */ |
| 1276 | |
| 1277 | else if (dbdata_type == type_retry) |
| 1278 | { |
| 1279 | uschar *id; |
| 1280 | int len = Ustrlen(key); |
| 1281 | |
| 1282 | if (len < MESSAGE_ID_LENGTH + 1) continue; |
| 1283 | id = key + len - MESSAGE_ID_LENGTH - 1; |
| 1284 | if (*id++ != ':') continue; |
| 1285 | |
| 1286 | for (i = 0; i < MESSAGE_ID_LENGTH; i++) |
| 1287 | { |
| 1288 | if (i == 6 || i == 13) |
| 1289 | { if (id[i] != '-') break; } |
| 1290 | else |
| 1291 | { if (!isalnum(id[i])) break; } |
| 1292 | } |
| 1293 | if (i < MESSAGE_ID_LENGTH) continue; |
| 1294 | |
| 1295 | Ustrncpy(buffer + path_len, id, MESSAGE_ID_LENGTH); |
| 1296 | sprintf(CS(buffer + path_len + MESSAGE_ID_LENGTH), "-D"); |
| 1297 | |
| 1298 | if (Ustat(buffer, &statbuf) != 0) |
| 1299 | { |
| 1300 | sprintf(CS(buffer + path_len), "%c/%s-D", id[5], id); |
| 1301 | if (Ustat(buffer, &statbuf) != 0) |
| 1302 | { |
| 1303 | dbfn_delete(dbm, key); |
| 1304 | printf("deleted %s (no message)\n", key); |
| 1305 | } |
| 1306 | } |
| 1307 | } |
| 1308 | } |
| 1309 | |
| 1310 | dbfn_close(dbm); |
| 1311 | printf("Tidying complete\n"); |
| 1312 | return 0; |
| 1313 | } |
| 1314 | |
| 1315 | #endif /* EXIM_TIDYDB */ |
| 1316 | |
| 1317 | /* End of exim_dbutil.c */ |