| 1 | #include <sys/types.h> |
| 2 | #include <sys/stat.h> |
| 3 | #include "readwrite.h" |
| 4 | #include "sig.h" |
| 5 | #include "direntry.h" |
| 6 | #include "control.h" |
| 7 | #include "select.h" |
| 8 | #include "open.h" |
| 9 | #include "seek.h" |
| 10 | #include "exit.h" |
| 11 | #include "lock.h" |
| 12 | #include "ndelay.h" |
| 13 | #include "now.h" |
| 14 | #include "getln.h" |
| 15 | #include "substdio.h" |
| 16 | #include "alloc.h" |
| 17 | #include "error.h" |
| 18 | #include "stralloc.h" |
| 19 | #include "str.h" |
| 20 | #include "byte.h" |
| 21 | #include "fmt.h" |
| 22 | #include "scan.h" |
| 23 | #include "case.h" |
| 24 | #include "auto_qmail.h" |
| 25 | #include "trigger.h" |
| 26 | #include "newfield.h" |
| 27 | #include "quote.h" |
| 28 | #include "qmail.h" |
| 29 | #include "qsutil.h" |
| 30 | #include "prioq.h" |
| 31 | #include "constmap.h" |
| 32 | #include "fmtqfn.h" |
| 33 | #include "readsubdir.h" |
| 34 | |
| 35 | /* critical timing feature #1: if not triggered, do not busy-loop */ |
| 36 | /* critical timing feature #2: if triggered, respond within fixed time */ |
| 37 | /* important timing feature: when triggered, respond instantly */ |
| 38 | #define SLEEP_TODO 1500 /* check todo/ every 25 minutes in any case */ |
| 39 | #define SLEEP_FUZZ 1 /* slop a bit on sleeps to avoid zeno effect */ |
| 40 | #define SLEEP_FOREVER 86400 /* absolute maximum time spent in select() */ |
| 41 | #define SLEEP_CLEANUP 76431 /* time between cleanups */ |
| 42 | #define SLEEP_SYSFAIL 123 |
| 43 | #define OSSIFIED 129600 /* 36 hours; _must_ exceed q-q's DEATH (24 hours) */ |
| 44 | |
| 45 | int lifetime = 604800; |
| 46 | |
| 47 | stralloc percenthack = {0}; |
| 48 | struct constmap mappercenthack; |
| 49 | stralloc locals = {0}; |
| 50 | struct constmap maplocals; |
| 51 | stralloc vdoms = {0}; |
| 52 | struct constmap mapvdoms; |
| 53 | stralloc envnoathost = {0}; |
| 54 | stralloc bouncefrom = {0}; |
| 55 | stralloc bouncehost = {0}; |
| 56 | stralloc doublebounceto = {0}; |
| 57 | stralloc doublebouncehost = {0}; |
| 58 | |
| 59 | char strnum2[FMT_ULONG]; |
| 60 | char strnum3[FMT_ULONG]; |
| 61 | |
| 62 | #define CHANNELS 2 |
| 63 | char *chanaddr[CHANNELS] = { "local/", "remote/" }; |
| 64 | char *chanstatusmsg[CHANNELS] = { " local ", " remote " }; |
| 65 | char *tochan[CHANNELS] = { " to local ", " to remote " }; |
| 66 | int chanfdout[CHANNELS] = { 1, 3 }; |
| 67 | int chanfdin[CHANNELS] = { 2, 4 }; |
| 68 | int chanskip[CHANNELS] = { 10, 20 }; |
| 69 | |
| 70 | int flagexitasap = 0; void sigterm() { flagexitasap = 1; } |
| 71 | int flagrunasap = 0; void sigalrm() { flagrunasap = 1; } |
| 72 | int flagreadasap = 0; void sighup() { flagreadasap = 1; } |
| 73 | |
| 74 | void cleandied() { log1("alert: oh no! lost qmail-clean connection! dying...\n"); |
| 75 | flagexitasap = 1; } |
| 76 | |
| 77 | int flagspawnalive[CHANNELS]; |
| 78 | void spawndied(c) int c; { log1("alert: oh no! lost spawn connection! dying...\n"); |
| 79 | flagspawnalive[c] = 0; flagexitasap = 1; } |
| 80 | |
| 81 | #define REPORTMAX 10000 |
| 82 | |
| 83 | datetime_sec recent; |
| 84 | |
| 85 | |
| 86 | /* this file is too long ----------------------------------------- FILENAMES */ |
| 87 | |
| 88 | stralloc fn = {0}; |
| 89 | stralloc fn2 = {0}; |
| 90 | char fnmake_strnum[FMT_ULONG]; |
| 91 | |
| 92 | void fnmake_init() |
| 93 | { |
| 94 | while (!stralloc_ready(&fn,FMTQFN)) nomem(); |
| 95 | while (!stralloc_ready(&fn2,FMTQFN)) nomem(); |
| 96 | } |
| 97 | |
| 98 | void fnmake_info(id) unsigned long id; { fn.len = fmtqfn(fn.s,"info/",id,1); } |
| 99 | void fnmake_todo(id) unsigned long id; { fn.len = fmtqfn(fn.s,"todo/",id,0); } |
| 100 | void fnmake_mess(id) unsigned long id; { fn.len = fmtqfn(fn.s,"mess/",id,1); } |
| 101 | void fnmake_foop(id) unsigned long id; { fn.len = fmtqfn(fn.s,"foop/",id,0); } |
| 102 | void fnmake_split(id) unsigned long id; { fn.len = fmtqfn(fn.s,"",id,1); } |
| 103 | void fnmake2_bounce(id) unsigned long id; |
| 104 | { fn2.len = fmtqfn(fn2.s,"bounce/",id,0); } |
| 105 | void fnmake_chanaddr(id,c) unsigned long id; int c; |
| 106 | { fn.len = fmtqfn(fn.s,chanaddr[c],id,1); } |
| 107 | |
| 108 | |
| 109 | /* this file is too long ----------------------------------------- REWRITING */ |
| 110 | |
| 111 | stralloc rwline = {0}; |
| 112 | |
| 113 | /* 1 if by land, 2 if by sea, 0 if out of memory. not allowed to barf. */ |
| 114 | /* may trash recip. must set up rwline, between a T and a \0. */ |
| 115 | int rewrite(recip) |
| 116 | char *recip; |
| 117 | { |
| 118 | int i; |
| 119 | int j; |
| 120 | char *x; |
| 121 | static stralloc addr = {0}; |
| 122 | int at; |
| 123 | |
| 124 | if (!stralloc_copys(&rwline,"T")) return 0; |
| 125 | if (!stralloc_copys(&addr,recip)) return 0; |
| 126 | |
| 127 | i = byte_rchr(addr.s,addr.len,'@'); |
| 128 | if (i == addr.len) { |
| 129 | if (!stralloc_cats(&addr,"@")) return 0; |
| 130 | if (!stralloc_cat(&addr,&envnoathost)) return 0; |
| 131 | } |
| 132 | |
| 133 | while (constmap(&mappercenthack,addr.s + i + 1,addr.len - i - 1)) { |
| 134 | j = byte_rchr(addr.s,i,'%'); |
| 135 | if (j == i) break; |
| 136 | addr.len = i; |
| 137 | i = j; |
| 138 | addr.s[i] = '@'; |
| 139 | } |
| 140 | |
| 141 | at = byte_rchr(addr.s,addr.len,'@'); |
| 142 | |
| 143 | if (constmap(&maplocals,addr.s + at + 1,addr.len - at - 1)) { |
| 144 | if (!stralloc_cat(&rwline,&addr)) return 0; |
| 145 | if (!stralloc_0(&rwline)) return 0; |
| 146 | return 1; |
| 147 | } |
| 148 | |
| 149 | for (i = 0;i <= addr.len;++i) |
| 150 | if (!i || (i == at + 1) || (i == addr.len) || ((i > at) && (addr.s[i] == '.'))) |
| 151 | if (x = constmap(&mapvdoms,addr.s + i,addr.len - i)) { |
| 152 | if (!*x) break; |
| 153 | if (!stralloc_cats(&rwline,x)) return 0; |
| 154 | if (!stralloc_cats(&rwline,"-")) return 0; |
| 155 | if (!stralloc_cat(&rwline,&addr)) return 0; |
| 156 | if (!stralloc_0(&rwline)) return 0; |
| 157 | return 1; |
| 158 | } |
| 159 | |
| 160 | if (!stralloc_cat(&rwline,&addr)) return 0; |
| 161 | if (!stralloc_0(&rwline)) return 0; |
| 162 | return 2; |
| 163 | } |
| 164 | |
| 165 | void senderadd(sa,sender,recip) |
| 166 | stralloc *sa; |
| 167 | char *sender; |
| 168 | char *recip; |
| 169 | { |
| 170 | int i; |
| 171 | int j; |
| 172 | int k; |
| 173 | |
| 174 | i = str_len(sender); |
| 175 | if (i >= 4) |
| 176 | if (str_equal(sender + i - 4,"-@[]")) |
| 177 | { |
| 178 | j = byte_rchr(sender,i - 4,'@'); |
| 179 | k = str_rchr(recip,'@'); |
| 180 | if (recip[k] && (j + 5 <= i)) |
| 181 | { |
| 182 | /* owner-@host-@[] -> owner-recipbox=reciphost@host */ |
| 183 | while (!stralloc_catb(sa,sender,j)) nomem(); |
| 184 | while (!stralloc_catb(sa,recip,k)) nomem(); |
| 185 | while (!stralloc_cats(sa,"=")) nomem(); |
| 186 | while (!stralloc_cats(sa,recip + k + 1)) nomem(); |
| 187 | while (!stralloc_cats(sa,"@")) nomem(); |
| 188 | while (!stralloc_catb(sa,sender + j + 1,i - 5 - j)) nomem(); |
| 189 | return; |
| 190 | } |
| 191 | } |
| 192 | while (!stralloc_cats(sa,sender)) nomem(); |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /* this file is too long ---------------------------------------------- INFO */ |
| 197 | |
| 198 | int getinfo(sa,dt,id) |
| 199 | stralloc *sa; |
| 200 | datetime_sec *dt; |
| 201 | unsigned long id; |
| 202 | { |
| 203 | int fdinfo; |
| 204 | struct stat st; |
| 205 | static stralloc line = {0}; |
| 206 | int match; |
| 207 | substdio ss; |
| 208 | char buf[128]; |
| 209 | |
| 210 | fnmake_info(id); |
| 211 | fdinfo = open_read(fn.s); |
| 212 | if (fdinfo == -1) return 0; |
| 213 | if (fstat(fdinfo,&st) == -1) { close(fdinfo); return 0; } |
| 214 | substdio_fdbuf(&ss,read,fdinfo,buf,sizeof(buf)); |
| 215 | if (getln(&ss,&line,&match,'\0') == -1) { close(fdinfo); return 0; } |
| 216 | close(fdinfo); |
| 217 | if (!match) return 0; |
| 218 | if (line.s[0] != 'F') return 0; |
| 219 | |
| 220 | *dt = st.st_mtime; |
| 221 | while (!stralloc_copys(sa,line.s + 1)) nomem(); |
| 222 | while (!stralloc_0(sa)) nomem(); |
| 223 | return 1; |
| 224 | } |
| 225 | |
| 226 | |
| 227 | /* this file is too long ------------------------------------- COMMUNICATION */ |
| 228 | |
| 229 | substdio sstoqc; char sstoqcbuf[1024]; |
| 230 | substdio ssfromqc; char ssfromqcbuf[1024]; |
| 231 | stralloc comm_buf[CHANNELS] = { {0}, {0} }; |
| 232 | int comm_pos[CHANNELS]; |
| 233 | |
| 234 | void comm_init() |
| 235 | { |
| 236 | int c; |
| 237 | substdio_fdbuf(&sstoqc,write,5,sstoqcbuf,sizeof(sstoqcbuf)); |
| 238 | substdio_fdbuf(&ssfromqc,read,6,ssfromqcbuf,sizeof(ssfromqcbuf)); |
| 239 | for (c = 0;c < CHANNELS;++c) |
| 240 | if (ndelay_on(chanfdout[c]) == -1) |
| 241 | /* this is so stupid: NDELAY semantics should be default on write */ |
| 242 | spawndied(c); /* drastic, but better than risking deadlock */ |
| 243 | } |
| 244 | |
| 245 | int comm_canwrite(c) |
| 246 | int c; |
| 247 | { |
| 248 | /* XXX: could allow a bigger buffer; say 10 recipients */ |
| 249 | if (comm_buf[c].s && comm_buf[c].len) return 0; |
| 250 | return 1; |
| 251 | } |
| 252 | |
| 253 | void comm_write(c,delnum,id,sender,recip) |
| 254 | int c; |
| 255 | int delnum; |
| 256 | unsigned long id; |
| 257 | char *sender; |
| 258 | char *recip; |
| 259 | { |
| 260 | char ch; |
| 261 | if (comm_buf[c].s && comm_buf[c].len) return; |
| 262 | while (!stralloc_copys(&comm_buf[c],"")) nomem(); |
| 263 | ch = delnum; |
| 264 | while (!stralloc_append(&comm_buf[c],&ch)) nomem(); |
| 265 | fnmake_split(id); |
| 266 | while (!stralloc_cats(&comm_buf[c],fn.s)) nomem(); |
| 267 | while (!stralloc_0(&comm_buf[c])) nomem(); |
| 268 | senderadd(&comm_buf[c],sender,recip); |
| 269 | while (!stralloc_0(&comm_buf[c])) nomem(); |
| 270 | while (!stralloc_cats(&comm_buf[c],recip)) nomem(); |
| 271 | while (!stralloc_0(&comm_buf[c])) nomem(); |
| 272 | comm_pos[c] = 0; |
| 273 | } |
| 274 | |
| 275 | void comm_selprep(nfds,wfds) |
| 276 | int *nfds; |
| 277 | fd_set *wfds; |
| 278 | { |
| 279 | int c; |
| 280 | for (c = 0;c < CHANNELS;++c) |
| 281 | if (flagspawnalive[c]) |
| 282 | if (comm_buf[c].s && comm_buf[c].len) |
| 283 | { |
| 284 | FD_SET(chanfdout[c],wfds); |
| 285 | if (*nfds <= chanfdout[c]) |
| 286 | *nfds = chanfdout[c] + 1; |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | void comm_do(wfds) |
| 291 | fd_set *wfds; |
| 292 | { |
| 293 | int c; |
| 294 | for (c = 0;c < CHANNELS;++c) |
| 295 | if (flagspawnalive[c]) |
| 296 | if (comm_buf[c].s && comm_buf[c].len) |
| 297 | if (FD_ISSET(chanfdout[c],wfds)) |
| 298 | { |
| 299 | int w; |
| 300 | int len; |
| 301 | len = comm_buf[c].len; |
| 302 | w = write(chanfdout[c],comm_buf[c].s + comm_pos[c],len - comm_pos[c]); |
| 303 | if (w <= 0) |
| 304 | { |
| 305 | if ((w == -1) && (errno == error_pipe)) |
| 306 | spawndied(c); |
| 307 | else |
| 308 | continue; /* kernel select() bug; can't avoid busy-looping */ |
| 309 | } |
| 310 | else |
| 311 | { |
| 312 | comm_pos[c] += w; |
| 313 | if (comm_pos[c] == len) |
| 314 | comm_buf[c].len = 0; |
| 315 | } |
| 316 | } |
| 317 | } |
| 318 | |
| 319 | |
| 320 | /* this file is too long ------------------------------------------ CLEANUPS */ |
| 321 | |
| 322 | int flagcleanup; /* if 1, cleanupdir is initialized and ready */ |
| 323 | readsubdir cleanupdir; |
| 324 | datetime_sec cleanuptime; |
| 325 | |
| 326 | void cleanup_init() |
| 327 | { |
| 328 | flagcleanup = 0; |
| 329 | cleanuptime = now(); |
| 330 | } |
| 331 | |
| 332 | void cleanup_selprep(wakeup) |
| 333 | datetime_sec *wakeup; |
| 334 | { |
| 335 | if (flagcleanup) *wakeup = 0; |
| 336 | if (*wakeup > cleanuptime) *wakeup = cleanuptime; |
| 337 | } |
| 338 | |
| 339 | void cleanup_do() |
| 340 | { |
| 341 | char ch; |
| 342 | struct stat st; |
| 343 | unsigned long id; |
| 344 | |
| 345 | if (!flagcleanup) |
| 346 | { |
| 347 | if (recent < cleanuptime) return; |
| 348 | readsubdir_init(&cleanupdir,"mess",pausedir); |
| 349 | flagcleanup = 1; |
| 350 | } |
| 351 | |
| 352 | switch(readsubdir_next(&cleanupdir,&id)) |
| 353 | { |
| 354 | case 1: |
| 355 | break; |
| 356 | case 0: |
| 357 | flagcleanup = 0; |
| 358 | cleanuptime = recent + SLEEP_CLEANUP; |
| 359 | default: |
| 360 | return; |
| 361 | } |
| 362 | |
| 363 | fnmake_mess(id); |
| 364 | if (stat(fn.s,&st) == -1) return; /* probably qmail-queue deleted it */ |
| 365 | if (recent <= st.st_atime + OSSIFIED) return; |
| 366 | |
| 367 | fnmake_info(id); |
| 368 | if (stat(fn.s,&st) == 0) return; |
| 369 | if (errno != error_noent) return; |
| 370 | fnmake_todo(id); |
| 371 | if (stat(fn.s,&st) == 0) return; |
| 372 | if (errno != error_noent) return; |
| 373 | |
| 374 | fnmake_foop(id); |
| 375 | if (substdio_putflush(&sstoqc,fn.s,fn.len) == -1) { cleandied(); return; } |
| 376 | if (substdio_get(&ssfromqc,&ch,1) != 1) { cleandied(); return; } |
| 377 | if (ch != '+') |
| 378 | log3("warning: qmail-clean unable to clean up ",fn.s,"\n"); |
| 379 | } |
| 380 | |
| 381 | |
| 382 | /* this file is too long ----------------------------------- PRIORITY QUEUES */ |
| 383 | |
| 384 | prioq pqdone = {0}; /* -todo +info; HOPEFULLY -local -remote */ |
| 385 | prioq pqchan[CHANNELS] = { {0}, {0} }; |
| 386 | /* pqchan 0: -todo +info +local ?remote */ |
| 387 | /* pqchan 1: -todo +info ?local +remote */ |
| 388 | prioq pqfail = {0}; /* stat() failure; has to be pqadded again */ |
| 389 | |
| 390 | void pqadd(id) |
| 391 | unsigned long id; |
| 392 | { |
| 393 | struct prioq_elt pe; |
| 394 | struct prioq_elt pechan[CHANNELS]; |
| 395 | int flagchan[CHANNELS]; |
| 396 | struct stat st; |
| 397 | int c; |
| 398 | |
| 399 | #define CHECKSTAT if (errno != error_noent) goto fail; |
| 400 | |
| 401 | fnmake_info(id); |
| 402 | if (stat(fn.s,&st) == -1) |
| 403 | { |
| 404 | CHECKSTAT |
| 405 | return; /* someone yanking our chain */ |
| 406 | } |
| 407 | |
| 408 | fnmake_todo(id); |
| 409 | if (stat(fn.s,&st) != -1) return; /* look, ma, dad crashed writing info! */ |
| 410 | CHECKSTAT |
| 411 | |
| 412 | for (c = 0;c < CHANNELS;++c) |
| 413 | { |
| 414 | fnmake_chanaddr(id,c); |
| 415 | if (stat(fn.s,&st) == -1) { flagchan[c] = 0; CHECKSTAT } |
| 416 | else { flagchan[c] = 1; pechan[c].id = id; pechan[c].dt = st.st_mtime; } |
| 417 | } |
| 418 | |
| 419 | for (c = 0;c < CHANNELS;++c) |
| 420 | if (flagchan[c]) |
| 421 | while (!prioq_insert(&pqchan[c],&pechan[c])) nomem(); |
| 422 | |
| 423 | for (c = 0;c < CHANNELS;++c) if (flagchan[c]) break; |
| 424 | if (c == CHANNELS) |
| 425 | { |
| 426 | pe.id = id; pe.dt = now(); |
| 427 | while (!prioq_insert(&pqdone,&pe)) nomem(); |
| 428 | } |
| 429 | |
| 430 | return; |
| 431 | |
| 432 | fail: |
| 433 | log3("warning: unable to stat ",fn.s,"; will try again later\n"); |
| 434 | pe.id = id; pe.dt = now() + SLEEP_SYSFAIL; |
| 435 | while (!prioq_insert(&pqfail,&pe)) nomem(); |
| 436 | } |
| 437 | |
| 438 | void pqstart() |
| 439 | { |
| 440 | readsubdir rs; |
| 441 | int x; |
| 442 | unsigned long id; |
| 443 | |
| 444 | readsubdir_init(&rs,"info",pausedir); |
| 445 | |
| 446 | while (x = readsubdir_next(&rs,&id)) |
| 447 | if (x > 0) |
| 448 | pqadd(id); |
| 449 | } |
| 450 | |
| 451 | void pqfinish() |
| 452 | { |
| 453 | int c; |
| 454 | struct prioq_elt pe; |
| 455 | time_t ut[2]; /* XXX: more portable than utimbuf, but still worrisome */ |
| 456 | |
| 457 | for (c = 0;c < CHANNELS;++c) |
| 458 | while (prioq_min(&pqchan[c],&pe)) |
| 459 | { |
| 460 | prioq_delmin(&pqchan[c]); |
| 461 | fnmake_chanaddr(pe.id,c); |
| 462 | ut[0] = ut[1] = pe.dt; |
| 463 | if (utime(fn.s,ut) == -1) |
| 464 | log3("warning: unable to utime ",fn.s,"; message will be retried too soon\n"); |
| 465 | } |
| 466 | } |
| 467 | |
| 468 | void pqrun() |
| 469 | { |
| 470 | int c; |
| 471 | int i; |
| 472 | for (c = 0;c < CHANNELS;++c) |
| 473 | if (pqchan[c].p) |
| 474 | if (pqchan[c].len) |
| 475 | for (i = 0;i < pqchan[c].len;++i) |
| 476 | pqchan[c].p[i].dt = recent; |
| 477 | } |
| 478 | |
| 479 | |
| 480 | /* this file is too long ---------------------------------------------- JOBS */ |
| 481 | |
| 482 | struct job |
| 483 | { |
| 484 | int refs; /* if 0, this struct is unused */ |
| 485 | unsigned long id; |
| 486 | int channel; |
| 487 | datetime_sec retry; |
| 488 | stralloc sender; |
| 489 | int numtodo; |
| 490 | int flaghiteof; |
| 491 | int flagdying; |
| 492 | } |
| 493 | ; |
| 494 | |
| 495 | int numjobs; |
| 496 | struct job *jo; |
| 497 | |
| 498 | void job_init() |
| 499 | { |
| 500 | int j; |
| 501 | while (!(jo = (struct job *) alloc(numjobs * sizeof(struct job)))) nomem(); |
| 502 | for (j = 0;j < numjobs;++j) |
| 503 | { |
| 504 | jo[j].refs = 0; |
| 505 | jo[j].sender.s = 0; |
| 506 | } |
| 507 | } |
| 508 | |
| 509 | int job_avail() |
| 510 | { |
| 511 | int j; |
| 512 | for (j = 0;j < numjobs;++j) if (!jo[j].refs) return 1; |
| 513 | return 0; |
| 514 | } |
| 515 | |
| 516 | int job_open(id,channel) |
| 517 | unsigned long id; |
| 518 | int channel; |
| 519 | { |
| 520 | int j; |
| 521 | for (j = 0;j < numjobs;++j) if (!jo[j].refs) break; |
| 522 | if (j == numjobs) return -1; |
| 523 | jo[j].refs = 1; |
| 524 | jo[j].id = id; |
| 525 | jo[j].channel = channel; |
| 526 | jo[j].numtodo = 0; |
| 527 | jo[j].flaghiteof = 0; |
| 528 | return j; |
| 529 | } |
| 530 | |
| 531 | void job_close(j) |
| 532 | int j; |
| 533 | { |
| 534 | struct prioq_elt pe; |
| 535 | struct stat st; |
| 536 | |
| 537 | if (0 < --jo[j].refs) return; |
| 538 | |
| 539 | pe.id = jo[j].id; |
| 540 | pe.dt = jo[j].retry; |
| 541 | if (jo[j].flaghiteof && !jo[j].numtodo) |
| 542 | { |
| 543 | fnmake_chanaddr(jo[j].id,jo[j].channel); |
| 544 | if (unlink(fn.s) == -1) |
| 545 | { |
| 546 | log3("warning: unable to unlink ",fn.s,"; will try again later\n"); |
| 547 | pe.dt = now() + SLEEP_SYSFAIL; |
| 548 | } |
| 549 | else |
| 550 | { |
| 551 | int c; |
| 552 | for (c = 0;c < CHANNELS;++c) if (c != jo[j].channel) |
| 553 | { |
| 554 | fnmake_chanaddr(jo[j].id,c); |
| 555 | if (stat(fn.s,&st) == 0) return; /* more channels going */ |
| 556 | if (errno != error_noent) |
| 557 | { |
| 558 | log3("warning: unable to stat ",fn.s,"\n"); |
| 559 | break; /* this is the only reason for HOPEFULLY */ |
| 560 | } |
| 561 | } |
| 562 | pe.dt = now(); |
| 563 | while (!prioq_insert(&pqdone,&pe)) nomem(); |
| 564 | return; |
| 565 | } |
| 566 | } |
| 567 | |
| 568 | while (!prioq_insert(&pqchan[jo[j].channel],&pe)) nomem(); |
| 569 | } |
| 570 | |
| 571 | |
| 572 | /* this file is too long ------------------------------------------- BOUNCES */ |
| 573 | |
| 574 | char *stripvdomprepend(recip) |
| 575 | char *recip; |
| 576 | { |
| 577 | int i; |
| 578 | char *domain; |
| 579 | int domainlen; |
| 580 | char *prepend; |
| 581 | |
| 582 | i = str_rchr(recip,'@'); |
| 583 | if (!recip[i]) return recip; |
| 584 | domain = recip + i + 1; |
| 585 | domainlen = str_len(domain); |
| 586 | |
| 587 | for (i = 0;i <= domainlen;++i) |
| 588 | if ((i == 0) || (i == domainlen) || (domain[i] == '.')) |
| 589 | if (prepend = constmap(&mapvdoms,domain + i,domainlen - i)) |
| 590 | { |
| 591 | if (!*prepend) break; |
| 592 | i = str_len(prepend); |
| 593 | if (str_diffn(recip,prepend,i)) break; |
| 594 | if (recip[i] != '-') break; |
| 595 | return recip + i + 1; |
| 596 | } |
| 597 | return recip; |
| 598 | } |
| 599 | |
| 600 | stralloc bouncetext = {0}; |
| 601 | |
| 602 | void addbounce(id,recip,report) |
| 603 | unsigned long id; |
| 604 | char *recip; |
| 605 | char *report; |
| 606 | { |
| 607 | int fd; |
| 608 | int pos; |
| 609 | int w; |
| 610 | while (!stralloc_copys(&bouncetext,"<")) nomem(); |
| 611 | while (!stralloc_cats(&bouncetext,stripvdomprepend(recip))) nomem(); |
| 612 | for (pos = 0;pos < bouncetext.len;++pos) |
| 613 | if (bouncetext.s[pos] == '\n') |
| 614 | bouncetext.s[pos] = '_'; |
| 615 | while (!stralloc_cats(&bouncetext,">:\n")) nomem(); |
| 616 | while (!stralloc_cats(&bouncetext,report)) nomem(); |
| 617 | if (report[0]) |
| 618 | if (report[str_len(report) - 1] != '\n') |
| 619 | while (!stralloc_cats(&bouncetext,"\n")) nomem(); |
| 620 | for (pos = bouncetext.len - 2;pos > 0;--pos) |
| 621 | if (bouncetext.s[pos] == '\n') |
| 622 | if (bouncetext.s[pos - 1] == '\n') |
| 623 | bouncetext.s[pos] = '/'; |
| 624 | while (!stralloc_cats(&bouncetext,"\n")) nomem(); |
| 625 | fnmake2_bounce(id); |
| 626 | for (;;) |
| 627 | { |
| 628 | fd = open_append(fn2.s); |
| 629 | if (fd != -1) break; |
| 630 | log1("alert: unable to append to bounce message; HELP! sleeping...\n"); |
| 631 | sleep(10); |
| 632 | } |
| 633 | pos = 0; |
| 634 | while (pos < bouncetext.len) |
| 635 | { |
| 636 | w = write(fd,bouncetext.s + pos,bouncetext.len - pos); |
| 637 | if (w <= 0) |
| 638 | { |
| 639 | log1("alert: unable to append to bounce message; HELP! sleeping...\n"); |
| 640 | sleep(10); |
| 641 | } |
| 642 | else |
| 643 | pos += w; |
| 644 | } |
| 645 | close(fd); |
| 646 | } |
| 647 | |
| 648 | int injectbounce(id) |
| 649 | unsigned long id; |
| 650 | { |
| 651 | struct qmail qqt; |
| 652 | struct stat st; |
| 653 | char *bouncesender; |
| 654 | char *bouncerecip; |
| 655 | int r; |
| 656 | int fd; |
| 657 | substdio ssread; |
| 658 | char buf[128]; |
| 659 | char inbuf[128]; |
| 660 | static stralloc sender = {0}; |
| 661 | static stralloc quoted = {0}; |
| 662 | datetime_sec birth; |
| 663 | unsigned long qp; |
| 664 | |
| 665 | if (!getinfo(&sender,&birth,id)) return 0; /* XXX: print warning */ |
| 666 | |
| 667 | /* owner-@host-@[] -> owner-@host */ |
| 668 | if (sender.len >= 5) |
| 669 | if (str_equal(sender.s + sender.len - 5,"-@[]")) |
| 670 | { |
| 671 | sender.len -= 4; |
| 672 | sender.s[sender.len - 1] = 0; |
| 673 | } |
| 674 | |
| 675 | fnmake2_bounce(id); |
| 676 | fnmake_mess(id); |
| 677 | if (stat(fn2.s,&st) == -1) |
| 678 | { |
| 679 | if (errno == error_noent) |
| 680 | return 1; |
| 681 | log3("warning: unable to stat ",fn2.s,"\n"); |
| 682 | return 0; |
| 683 | } |
| 684 | if (str_equal(sender.s,"#@[]")) |
| 685 | log3("triple bounce: discarding ",fn2.s,"\n"); |
| 686 | else |
| 687 | { |
| 688 | if (qmail_open(&qqt) == -1) |
| 689 | { log1("warning: unable to start qmail-queue, will try later\n"); return 0; } |
| 690 | qp = qmail_qp(&qqt); |
| 691 | |
| 692 | if (*sender.s) { bouncesender = ""; bouncerecip = sender.s; } |
| 693 | else { bouncesender = "#@[]"; bouncerecip = doublebounceto.s; } |
| 694 | |
| 695 | while (!newfield_datemake(now())) nomem(); |
| 696 | qmail_put(&qqt,newfield_date.s,newfield_date.len); |
| 697 | qmail_puts(&qqt,"From: "); |
| 698 | while (!quote("ed,&bouncefrom)) nomem(); |
| 699 | qmail_put(&qqt,quoted.s,quoted.len); |
| 700 | qmail_puts(&qqt,"@"); |
| 701 | qmail_put(&qqt,bouncehost.s,bouncehost.len); |
| 702 | qmail_puts(&qqt,"\nTo: "); |
| 703 | while (!quote2("ed,bouncerecip)) nomem(); |
| 704 | qmail_put(&qqt,quoted.s,quoted.len); |
| 705 | qmail_puts(&qqt,"\n\ |
| 706 | Subject: failure notice\n\ |
| 707 | \n\ |
| 708 | Hi. This is the qmail-send program at "); |
| 709 | qmail_put(&qqt,bouncehost.s,bouncehost.len); |
| 710 | qmail_puts(&qqt,*sender.s ? ".\n\ |
| 711 | I'm afraid I wasn't able to deliver your message to the following addresses.\n\ |
| 712 | This is a permanent error; I've given up. Sorry it didn't work out.\n\ |
| 713 | \n\ |
| 714 | " : ".\n\ |
| 715 | I tried to deliver a bounce message to this address, but the bounce bounced!\n\ |
| 716 | \n\ |
| 717 | "); |
| 718 | |
| 719 | fd = open_read(fn2.s); |
| 720 | if (fd == -1) |
| 721 | qmail_fail(&qqt); |
| 722 | else |
| 723 | { |
| 724 | substdio_fdbuf(&ssread,read,fd,inbuf,sizeof(inbuf)); |
| 725 | while ((r = substdio_get(&ssread,buf,sizeof(buf))) > 0) |
| 726 | qmail_put(&qqt,buf,r); |
| 727 | close(fd); |
| 728 | if (r == -1) |
| 729 | qmail_fail(&qqt); |
| 730 | } |
| 731 | |
| 732 | qmail_puts(&qqt,*sender.s ? "--- Below this line is a copy of the message.\n\n" : "--- Below this line is the original bounce.\n\n"); |
| 733 | qmail_puts(&qqt,"Return-Path: <"); |
| 734 | while (!quote2("ed,sender.s)) nomem(); |
| 735 | qmail_put(&qqt,quoted.s,quoted.len); |
| 736 | qmail_puts(&qqt,">\n"); |
| 737 | |
| 738 | fd = open_read(fn.s); |
| 739 | if (fd == -1) |
| 740 | qmail_fail(&qqt); |
| 741 | else |
| 742 | { |
| 743 | substdio_fdbuf(&ssread,read,fd,inbuf,sizeof(inbuf)); |
| 744 | while ((r = substdio_get(&ssread,buf,sizeof(buf))) > 0) |
| 745 | qmail_put(&qqt,buf,r); |
| 746 | close(fd); |
| 747 | if (r == -1) |
| 748 | qmail_fail(&qqt); |
| 749 | } |
| 750 | |
| 751 | qmail_from(&qqt,bouncesender); |
| 752 | qmail_to(&qqt,bouncerecip); |
| 753 | if (*qmail_close(&qqt)) |
| 754 | { log1("warning: trouble injecting bounce message, will try later\n"); return 0; } |
| 755 | |
| 756 | strnum2[fmt_ulong(strnum2,id)] = 0; |
| 757 | log2("bounce msg ",strnum2); |
| 758 | strnum2[fmt_ulong(strnum2,qp)] = 0; |
| 759 | log3(" qp ",strnum2,"\n"); |
| 760 | } |
| 761 | if (unlink(fn2.s) == -1) |
| 762 | { |
| 763 | log3("warning: unable to unlink ",fn2.s,"\n"); |
| 764 | return 0; |
| 765 | } |
| 766 | return 1; |
| 767 | } |
| 768 | |
| 769 | |
| 770 | /* this file is too long ---------------------------------------- DELIVERIES */ |
| 771 | |
| 772 | struct del |
| 773 | { |
| 774 | int used; |
| 775 | int j; |
| 776 | unsigned long delid; |
| 777 | seek_pos mpos; |
| 778 | stralloc recip; |
| 779 | } |
| 780 | ; |
| 781 | |
| 782 | unsigned long masterdelid = 1; |
| 783 | unsigned int concurrency[CHANNELS] = { 10, 20 }; |
| 784 | unsigned int concurrencyused[CHANNELS] = { 0, 0 }; |
| 785 | struct del *d[CHANNELS]; |
| 786 | stralloc dline[CHANNELS]; |
| 787 | char delbuf[2048]; |
| 788 | |
| 789 | void del_status() |
| 790 | { |
| 791 | int c; |
| 792 | |
| 793 | log1("status:"); |
| 794 | for (c = 0;c < CHANNELS;++c) { |
| 795 | strnum2[fmt_ulong(strnum2,(unsigned long) concurrencyused[c])] = 0; |
| 796 | strnum3[fmt_ulong(strnum3,(unsigned long) concurrency[c])] = 0; |
| 797 | log2(chanstatusmsg[c],strnum2); |
| 798 | log2("/",strnum3); |
| 799 | } |
| 800 | if (flagexitasap) log1(" exitasap"); |
| 801 | log1("\n"); |
| 802 | } |
| 803 | |
| 804 | void del_init() |
| 805 | { |
| 806 | int c; |
| 807 | int i; |
| 808 | for (c = 0;c < CHANNELS;++c) |
| 809 | { |
| 810 | flagspawnalive[c] = 1; |
| 811 | while (!(d[c] = (struct del *) alloc(concurrency[c] * sizeof(struct del)))) |
| 812 | nomem(); |
| 813 | for (i = 0;i < concurrency[c];++i) |
| 814 | { d[c][i].used = 0; d[c][i].recip.s = 0; } |
| 815 | dline[c].s = 0; |
| 816 | while (!stralloc_copys(&dline[c],"")) nomem(); |
| 817 | } |
| 818 | del_status(); |
| 819 | } |
| 820 | |
| 821 | int del_canexit() |
| 822 | { |
| 823 | int c; |
| 824 | for (c = 0;c < CHANNELS;++c) |
| 825 | if (flagspawnalive[c]) /* if dead, nothing we can do about its jobs */ |
| 826 | if (concurrencyused[c]) return 0; |
| 827 | return 1; |
| 828 | } |
| 829 | |
| 830 | int del_avail(c) |
| 831 | int c; |
| 832 | { |
| 833 | return flagspawnalive[c] && comm_canwrite(c) && (concurrencyused[c] < concurrency[c]); |
| 834 | } |
| 835 | |
| 836 | void del_start(j,mpos,recip) |
| 837 | int j; |
| 838 | seek_pos mpos; |
| 839 | char *recip; |
| 840 | { |
| 841 | int i; |
| 842 | int c; |
| 843 | |
| 844 | c = jo[j].channel; |
| 845 | if (!flagspawnalive[c]) return; |
| 846 | if (!comm_canwrite(c)) return; |
| 847 | |
| 848 | for (i = 0;i < concurrency[c];++i) if (!d[c][i].used) break; |
| 849 | if (i == concurrency[c]) return; |
| 850 | |
| 851 | if (!stralloc_copys(&d[c][i].recip,recip)) { nomem(); return; } |
| 852 | if (!stralloc_0(&d[c][i].recip)) { nomem(); return; } |
| 853 | d[c][i].j = j; ++jo[j].refs; |
| 854 | d[c][i].delid = masterdelid++; |
| 855 | d[c][i].mpos = mpos; |
| 856 | d[c][i].used = 1; ++concurrencyused[c]; |
| 857 | |
| 858 | comm_write(c,i,jo[j].id,jo[j].sender.s,recip); |
| 859 | |
| 860 | strnum2[fmt_ulong(strnum2,d[c][i].delid)] = 0; |
| 861 | strnum3[fmt_ulong(strnum3,jo[j].id)] = 0; |
| 862 | log2("starting delivery ",strnum2); |
| 863 | log3(": msg ",strnum3,tochan[c]); |
| 864 | logsafe(recip); |
| 865 | log1("\n"); |
| 866 | del_status(); |
| 867 | } |
| 868 | |
| 869 | void markdone(c,id,pos) |
| 870 | int c; |
| 871 | unsigned long id; |
| 872 | seek_pos pos; |
| 873 | { |
| 874 | struct stat st; |
| 875 | int fd; |
| 876 | fnmake_chanaddr(id,c); |
| 877 | for (;;) |
| 878 | { |
| 879 | fd = open_write(fn.s); |
| 880 | if (fd == -1) break; |
| 881 | if (fstat(fd,&st) == -1) { close(fd); break; } |
| 882 | if (seek_set(fd,pos) == -1) { close(fd); break; } |
| 883 | if (write(fd,"D",1) != 1) { close(fd); break; } |
| 884 | /* further errors -> double delivery without us knowing about it, oh well */ |
| 885 | close(fd); |
| 886 | return; |
| 887 | } |
| 888 | log3("warning: trouble marking ",fn.s,"; message will be delivered twice!\n"); |
| 889 | } |
| 890 | |
| 891 | void del_dochan(c) |
| 892 | int c; |
| 893 | { |
| 894 | int r; |
| 895 | char ch; |
| 896 | int i; |
| 897 | int delnum; |
| 898 | r = read(chanfdin[c],delbuf,sizeof(delbuf)); |
| 899 | if (r == -1) return; |
| 900 | if (r == 0) { spawndied(c); return; } |
| 901 | for (i = 0;i < r;++i) |
| 902 | { |
| 903 | ch = delbuf[i]; |
| 904 | while (!stralloc_append(&dline[c],&ch)) nomem(); |
| 905 | if (dline[c].len > REPORTMAX) |
| 906 | dline[c].len = REPORTMAX; |
| 907 | /* qmail-lspawn and qmail-rspawn are responsible for keeping it short */ |
| 908 | /* but from a security point of view, we don't trust rspawn */ |
| 909 | if (!ch && (dline[c].len > 1)) |
| 910 | { |
| 911 | delnum = (unsigned int) (unsigned char) dline[c].s[0]; |
| 912 | if ((delnum < 0) || (delnum >= concurrency[c]) || !d[c][delnum].used) |
| 913 | log1("warning: internal error: delivery report out of range\n"); |
| 914 | else |
| 915 | { |
| 916 | strnum3[fmt_ulong(strnum3,d[c][delnum].delid)] = 0; |
| 917 | if (dline[c].s[1] == 'Z') |
| 918 | if (jo[d[c][delnum].j].flagdying) |
| 919 | { |
| 920 | dline[c].s[1] = 'D'; |
| 921 | --dline[c].len; |
| 922 | while (!stralloc_cats(&dline[c],"I'm not going to try again; this message has been in the queue too long.\n")) nomem(); |
| 923 | while (!stralloc_0(&dline[c])) nomem(); |
| 924 | } |
| 925 | switch(dline[c].s[1]) |
| 926 | { |
| 927 | case 'K': |
| 928 | log3("delivery ",strnum3,": success: "); |
| 929 | logsafe(dline[c].s + 2); |
| 930 | log1("\n"); |
| 931 | markdone(c,jo[d[c][delnum].j].id,d[c][delnum].mpos); |
| 932 | --jo[d[c][delnum].j].numtodo; |
| 933 | break; |
| 934 | case 'Z': |
| 935 | log3("delivery ",strnum3,": deferral: "); |
| 936 | logsafe(dline[c].s + 2); |
| 937 | log1("\n"); |
| 938 | break; |
| 939 | case 'D': |
| 940 | log3("delivery ",strnum3,": failure: "); |
| 941 | logsafe(dline[c].s + 2); |
| 942 | log1("\n"); |
| 943 | addbounce(jo[d[c][delnum].j].id,d[c][delnum].recip.s,dline[c].s + 2); |
| 944 | markdone(c,jo[d[c][delnum].j].id,d[c][delnum].mpos); |
| 945 | --jo[d[c][delnum].j].numtodo; |
| 946 | break; |
| 947 | default: |
| 948 | log3("delivery ",strnum3,": report mangled, will defer\n"); |
| 949 | } |
| 950 | job_close(d[c][delnum].j); |
| 951 | d[c][delnum].used = 0; --concurrencyused[c]; |
| 952 | del_status(); |
| 953 | } |
| 954 | dline[c].len = 0; |
| 955 | } |
| 956 | } |
| 957 | } |
| 958 | |
| 959 | void del_selprep(nfds,rfds) |
| 960 | int *nfds; |
| 961 | fd_set *rfds; |
| 962 | { |
| 963 | int c; |
| 964 | for (c = 0;c < CHANNELS;++c) |
| 965 | if (flagspawnalive[c]) |
| 966 | { |
| 967 | FD_SET(chanfdin[c],rfds); |
| 968 | if (*nfds <= chanfdin[c]) |
| 969 | *nfds = chanfdin[c] + 1; |
| 970 | } |
| 971 | } |
| 972 | |
| 973 | void del_do(rfds) |
| 974 | fd_set *rfds; |
| 975 | { |
| 976 | int c; |
| 977 | for (c = 0;c < CHANNELS;++c) |
| 978 | if (flagspawnalive[c]) |
| 979 | if (FD_ISSET(chanfdin[c],rfds)) |
| 980 | del_dochan(c); |
| 981 | } |
| 982 | |
| 983 | |
| 984 | /* this file is too long -------------------------------------------- PASSES */ |
| 985 | |
| 986 | struct |
| 987 | { |
| 988 | unsigned long id; /* if 0, need a new pass */ |
| 989 | int j; /* defined if id; job number */ |
| 990 | int fd; /* defined if id; reading from {local,remote} */ |
| 991 | seek_pos mpos; /* defined if id; mark position */ |
| 992 | substdio ss; |
| 993 | char buf[128]; |
| 994 | } |
| 995 | pass[CHANNELS]; |
| 996 | |
| 997 | void pass_init() |
| 998 | { |
| 999 | int c; |
| 1000 | for (c = 0;c < CHANNELS;++c) pass[c].id = 0; |
| 1001 | } |
| 1002 | |
| 1003 | void pass_selprep(wakeup) |
| 1004 | datetime_sec *wakeup; |
| 1005 | { |
| 1006 | int c; |
| 1007 | struct prioq_elt pe; |
| 1008 | if (flagexitasap) return; |
| 1009 | for (c = 0;c < CHANNELS;++c) |
| 1010 | if (pass[c].id) |
| 1011 | if (del_avail(c)) |
| 1012 | { *wakeup = 0; return; } |
| 1013 | if (job_avail()) |
| 1014 | for (c = 0;c < CHANNELS;++c) |
| 1015 | if (!pass[c].id) |
| 1016 | if (prioq_min(&pqchan[c],&pe)) |
| 1017 | if (*wakeup > pe.dt) |
| 1018 | *wakeup = pe.dt; |
| 1019 | if (prioq_min(&pqfail,&pe)) |
| 1020 | if (*wakeup > pe.dt) |
| 1021 | *wakeup = pe.dt; |
| 1022 | if (prioq_min(&pqdone,&pe)) |
| 1023 | if (*wakeup > pe.dt) |
| 1024 | *wakeup = pe.dt; |
| 1025 | } |
| 1026 | |
| 1027 | static datetime_sec squareroot(x) /* result^2 <= x < (result + 1)^2 */ |
| 1028 | datetime_sec x; /* assuming: >= 0 */ |
| 1029 | { |
| 1030 | datetime_sec y; |
| 1031 | datetime_sec yy; |
| 1032 | datetime_sec y21; |
| 1033 | int j; |
| 1034 | |
| 1035 | y = 0; yy = 0; |
| 1036 | for (j = 15;j >= 0;--j) |
| 1037 | { |
| 1038 | y21 = (y << (j + 1)) + (1 << (j + j)); |
| 1039 | if (y21 <= x - yy) { y += (1 << j); yy += y21; } |
| 1040 | } |
| 1041 | return y; |
| 1042 | } |
| 1043 | |
| 1044 | datetime_sec nextretry(birth,c) |
| 1045 | datetime_sec birth; |
| 1046 | int c; |
| 1047 | { |
| 1048 | int n; |
| 1049 | |
| 1050 | if (birth > recent) n = 0; |
| 1051 | else n = squareroot(recent - birth); /* no need to add fuzz to recent */ |
| 1052 | n += chanskip[c]; |
| 1053 | return birth + n * n; |
| 1054 | } |
| 1055 | |
| 1056 | void pass_dochan(c) |
| 1057 | int c; |
| 1058 | { |
| 1059 | datetime_sec birth; |
| 1060 | struct prioq_elt pe; |
| 1061 | static stralloc line = {0}; |
| 1062 | int match; |
| 1063 | |
| 1064 | if (flagexitasap) return; |
| 1065 | |
| 1066 | if (!pass[c].id) |
| 1067 | { |
| 1068 | if (!job_avail()) return; |
| 1069 | if (!prioq_min(&pqchan[c],&pe)) return; |
| 1070 | if (pe.dt > recent) return; |
| 1071 | fnmake_chanaddr(pe.id,c); |
| 1072 | |
| 1073 | prioq_delmin(&pqchan[c]); |
| 1074 | pass[c].mpos = 0; |
| 1075 | pass[c].fd = open_read(fn.s); |
| 1076 | if (pass[c].fd == -1) goto trouble; |
| 1077 | if (!getinfo(&line,&birth,pe.id)) { close(pass[c].fd); goto trouble; } |
| 1078 | pass[c].id = pe.id; |
| 1079 | substdio_fdbuf(&pass[c].ss,read,pass[c].fd,pass[c].buf,sizeof(pass[c].buf)); |
| 1080 | pass[c].j = job_open(pe.id,c); |
| 1081 | jo[pass[c].j].retry = nextretry(birth,c); |
| 1082 | jo[pass[c].j].flagdying = (recent > birth + lifetime); |
| 1083 | while (!stralloc_copy(&jo[pass[c].j].sender,&line)) nomem(); |
| 1084 | } |
| 1085 | |
| 1086 | if (!del_avail(c)) return; |
| 1087 | |
| 1088 | if (getln(&pass[c].ss,&line,&match,'\0') == -1) |
| 1089 | { |
| 1090 | fnmake_chanaddr(pass[c].id,c); |
| 1091 | log3("warning: trouble reading ",fn.s,"; will try again later\n"); |
| 1092 | close(pass[c].fd); |
| 1093 | job_close(pass[c].j); |
| 1094 | pass[c].id = 0; |
| 1095 | return; |
| 1096 | } |
| 1097 | if (!match) |
| 1098 | { |
| 1099 | close(pass[c].fd); |
| 1100 | jo[pass[c].j].flaghiteof = 1; |
| 1101 | job_close(pass[c].j); |
| 1102 | pass[c].id = 0; |
| 1103 | return; |
| 1104 | } |
| 1105 | switch(line.s[0]) |
| 1106 | { |
| 1107 | case 'T': |
| 1108 | ++jo[pass[c].j].numtodo; |
| 1109 | del_start(pass[c].j,pass[c].mpos,line.s + 1); |
| 1110 | break; |
| 1111 | case 'D': |
| 1112 | break; |
| 1113 | default: |
| 1114 | fnmake_chanaddr(pass[c].id,c); |
| 1115 | log3("warning: unknown record type in ",fn.s,"!\n"); |
| 1116 | close(pass[c].fd); |
| 1117 | job_close(pass[c].j); |
| 1118 | pass[c].id = 0; |
| 1119 | return; |
| 1120 | } |
| 1121 | |
| 1122 | pass[c].mpos += line.len; |
| 1123 | return; |
| 1124 | |
| 1125 | trouble: |
| 1126 | log3("warning: trouble opening ",fn.s,"; will try again later\n"); |
| 1127 | pe.dt = recent + SLEEP_SYSFAIL; |
| 1128 | while (!prioq_insert(&pqchan[c],&pe)) nomem(); |
| 1129 | } |
| 1130 | |
| 1131 | void messdone(id) |
| 1132 | unsigned long id; |
| 1133 | { |
| 1134 | char ch; |
| 1135 | int c; |
| 1136 | struct prioq_elt pe; |
| 1137 | struct stat st; |
| 1138 | |
| 1139 | for (c = 0;c < CHANNELS;++c) |
| 1140 | { |
| 1141 | fnmake_chanaddr(id,c); |
| 1142 | if (stat(fn.s,&st) == 0) return; /* false alarm; consequence of HOPEFULLY */ |
| 1143 | if (errno != error_noent) |
| 1144 | { |
| 1145 | log3("warning: unable to stat ",fn.s,"; will try again later\n"); |
| 1146 | goto fail; |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | fnmake_todo(id); |
| 1151 | if (stat(fn.s,&st) == 0) return; |
| 1152 | if (errno != error_noent) |
| 1153 | { |
| 1154 | log3("warning: unable to stat ",fn.s,"; will try again later\n"); |
| 1155 | goto fail; |
| 1156 | } |
| 1157 | |
| 1158 | fnmake_info(id); |
| 1159 | if (stat(fn.s,&st) == -1) |
| 1160 | { |
| 1161 | if (errno == error_noent) return; |
| 1162 | log3("warning: unable to stat ",fn.s,"; will try again later\n"); |
| 1163 | goto fail; |
| 1164 | } |
| 1165 | |
| 1166 | /* -todo +info -local -remote ?bounce */ |
| 1167 | if (!injectbounce(id)) |
| 1168 | goto fail; /* injectbounce() produced error message */ |
| 1169 | |
| 1170 | strnum3[fmt_ulong(strnum3,id)] = 0; |
| 1171 | log3("end msg ",strnum3,"\n"); |
| 1172 | |
| 1173 | /* -todo +info -local -remote -bounce */ |
| 1174 | fnmake_info(id); |
| 1175 | if (unlink(fn.s) == -1) |
| 1176 | { |
| 1177 | log3("warning: unable to unlink ",fn.s,"; will try again later\n"); |
| 1178 | goto fail; |
| 1179 | } |
| 1180 | |
| 1181 | /* -todo -info -local -remote -bounce; we can relax */ |
| 1182 | fnmake_foop(id); |
| 1183 | if (substdio_putflush(&sstoqc,fn.s,fn.len) == -1) { cleandied(); return; } |
| 1184 | if (substdio_get(&ssfromqc,&ch,1) != 1) { cleandied(); return; } |
| 1185 | if (ch != '+') |
| 1186 | log3("warning: qmail-clean unable to clean up ",fn.s,"\n"); |
| 1187 | |
| 1188 | return; |
| 1189 | |
| 1190 | fail: |
| 1191 | pe.id = id; pe.dt = now() + SLEEP_SYSFAIL; |
| 1192 | while (!prioq_insert(&pqdone,&pe)) nomem(); |
| 1193 | } |
| 1194 | |
| 1195 | void pass_do() |
| 1196 | { |
| 1197 | int c; |
| 1198 | struct prioq_elt pe; |
| 1199 | |
| 1200 | for (c = 0;c < CHANNELS;++c) pass_dochan(c); |
| 1201 | if (prioq_min(&pqfail,&pe)) |
| 1202 | if (pe.dt <= recent) |
| 1203 | { |
| 1204 | prioq_delmin(&pqfail); |
| 1205 | pqadd(pe.id); |
| 1206 | } |
| 1207 | if (prioq_min(&pqdone,&pe)) |
| 1208 | if (pe.dt <= recent) |
| 1209 | { |
| 1210 | prioq_delmin(&pqdone); |
| 1211 | messdone(pe.id); |
| 1212 | } |
| 1213 | } |
| 1214 | |
| 1215 | |
| 1216 | /* this file is too long ---------------------------------------------- TODO */ |
| 1217 | |
| 1218 | datetime_sec nexttodorun; |
| 1219 | DIR *tododir; /* if 0, have to opendir again */ |
| 1220 | stralloc todoline = {0}; |
| 1221 | char todobuf[SUBSTDIO_INSIZE]; |
| 1222 | char todobufinfo[512]; |
| 1223 | char todobufchan[CHANNELS][1024]; |
| 1224 | |
| 1225 | void todo_init() |
| 1226 | { |
| 1227 | tododir = 0; |
| 1228 | nexttodorun = now(); |
| 1229 | trigger_set(); |
| 1230 | } |
| 1231 | |
| 1232 | void todo_selprep(nfds,rfds,wakeup) |
| 1233 | int *nfds; |
| 1234 | fd_set *rfds; |
| 1235 | datetime_sec *wakeup; |
| 1236 | { |
| 1237 | if (flagexitasap) return; |
| 1238 | trigger_selprep(nfds,rfds); |
| 1239 | if (tododir) *wakeup = 0; |
| 1240 | if (*wakeup > nexttodorun) *wakeup = nexttodorun; |
| 1241 | } |
| 1242 | |
| 1243 | void todo_do(rfds) |
| 1244 | fd_set *rfds; |
| 1245 | { |
| 1246 | struct stat st; |
| 1247 | substdio ss; int fd; |
| 1248 | substdio ssinfo; int fdinfo; |
| 1249 | substdio sschan[CHANNELS]; |
| 1250 | int fdchan[CHANNELS]; |
| 1251 | int flagchan[CHANNELS]; |
| 1252 | struct prioq_elt pe; |
| 1253 | char ch; |
| 1254 | int match; |
| 1255 | unsigned long id; |
| 1256 | unsigned int len; |
| 1257 | direntry *d; |
| 1258 | int c; |
| 1259 | unsigned long uid; |
| 1260 | unsigned long pid; |
| 1261 | |
| 1262 | fd = -1; |
| 1263 | fdinfo = -1; |
| 1264 | for (c = 0;c < CHANNELS;++c) fdchan[c] = -1; |
| 1265 | |
| 1266 | if (flagexitasap) return; |
| 1267 | |
| 1268 | if (!tododir) |
| 1269 | { |
| 1270 | if (!trigger_pulled(rfds)) |
| 1271 | if (recent < nexttodorun) |
| 1272 | return; |
| 1273 | trigger_set(); |
| 1274 | tododir = opendir("todo"); |
| 1275 | if (!tododir) |
| 1276 | { |
| 1277 | pausedir("todo"); |
| 1278 | return; |
| 1279 | } |
| 1280 | nexttodorun = recent + SLEEP_TODO; |
| 1281 | } |
| 1282 | |
| 1283 | d = readdir(tododir); |
| 1284 | if (!d) |
| 1285 | { |
| 1286 | closedir(tododir); |
| 1287 | tododir = 0; |
| 1288 | return; |
| 1289 | } |
| 1290 | if (str_equal(d->d_name,".")) return; |
| 1291 | if (str_equal(d->d_name,"..")) return; |
| 1292 | len = scan_ulong(d->d_name,&id); |
| 1293 | if (!len || d->d_name[len]) return; |
| 1294 | |
| 1295 | fnmake_todo(id); |
| 1296 | |
| 1297 | fd = open_read(fn.s); |
| 1298 | if (fd == -1) { log3("warning: unable to open ",fn.s,"\n"); return; } |
| 1299 | |
| 1300 | fnmake_mess(id); |
| 1301 | /* just for the statistics */ |
| 1302 | if (stat(fn.s,&st) == -1) |
| 1303 | { log3("warning: unable to stat ",fn.s,"\n"); goto fail; } |
| 1304 | |
| 1305 | for (c = 0;c < CHANNELS;++c) |
| 1306 | { |
| 1307 | fnmake_chanaddr(id,c); |
| 1308 | if (unlink(fn.s) == -1) if (errno != error_noent) |
| 1309 | { log3("warning: unable to unlink ",fn.s,"\n"); goto fail; } |
| 1310 | } |
| 1311 | |
| 1312 | fnmake_info(id); |
| 1313 | if (unlink(fn.s) == -1) if (errno != error_noent) |
| 1314 | { log3("warning: unable to unlink ",fn.s,"\n"); goto fail; } |
| 1315 | |
| 1316 | fdinfo = open_excl(fn.s); |
| 1317 | if (fdinfo == -1) |
| 1318 | { log3("warning: unable to create ",fn.s,"\n"); goto fail; } |
| 1319 | |
| 1320 | strnum3[fmt_ulong(strnum3,id)] = 0; |
| 1321 | log3("new msg ",strnum3,"\n"); |
| 1322 | |
| 1323 | for (c = 0;c < CHANNELS;++c) flagchan[c] = 0; |
| 1324 | |
| 1325 | substdio_fdbuf(&ss,read,fd,todobuf,sizeof(todobuf)); |
| 1326 | substdio_fdbuf(&ssinfo,write,fdinfo,todobufinfo,sizeof(todobufinfo)); |
| 1327 | |
| 1328 | uid = 0; |
| 1329 | pid = 0; |
| 1330 | |
| 1331 | for (;;) |
| 1332 | { |
| 1333 | if (getln(&ss,&todoline,&match,'\0') == -1) |
| 1334 | { |
| 1335 | /* perhaps we're out of memory, perhaps an I/O error */ |
| 1336 | fnmake_todo(id); |
| 1337 | log3("warning: trouble reading ",fn.s,"\n"); goto fail; |
| 1338 | } |
| 1339 | if (!match) break; |
| 1340 | |
| 1341 | switch(todoline.s[0]) |
| 1342 | { |
| 1343 | case 'u': |
| 1344 | scan_ulong(todoline.s + 1,&uid); |
| 1345 | break; |
| 1346 | case 'p': |
| 1347 | scan_ulong(todoline.s + 1,&pid); |
| 1348 | break; |
| 1349 | case 'F': |
| 1350 | if (substdio_putflush(&ssinfo,todoline.s,todoline.len) == -1) |
| 1351 | { |
| 1352 | fnmake_info(id); |
| 1353 | log3("warning: trouble writing to ",fn.s,"\n"); goto fail; |
| 1354 | } |
| 1355 | log2("info msg ",strnum3); |
| 1356 | strnum2[fmt_ulong(strnum2,(unsigned long) st.st_size)] = 0; |
| 1357 | log2(": bytes ",strnum2); |
| 1358 | log1(" from <"); logsafe(todoline.s + 1); |
| 1359 | strnum2[fmt_ulong(strnum2,pid)] = 0; |
| 1360 | log2("> qp ",strnum2); |
| 1361 | strnum2[fmt_ulong(strnum2,uid)] = 0; |
| 1362 | log2(" uid ",strnum2); |
| 1363 | log1("\n"); |
| 1364 | break; |
| 1365 | case 'T': |
| 1366 | switch(rewrite(todoline.s + 1)) |
| 1367 | { |
| 1368 | case 0: nomem(); goto fail; |
| 1369 | case 2: c = 1; break; |
| 1370 | default: c = 0; break; |
| 1371 | } |
| 1372 | if (fdchan[c] == -1) |
| 1373 | { |
| 1374 | fnmake_chanaddr(id,c); |
| 1375 | fdchan[c] = open_excl(fn.s); |
| 1376 | if (fdchan[c] == -1) |
| 1377 | { log3("warning: unable to create ",fn.s,"\n"); goto fail; } |
| 1378 | substdio_fdbuf(&sschan[c] |
| 1379 | ,write,fdchan[c],todobufchan[c],sizeof(todobufchan[c])); |
| 1380 | flagchan[c] = 1; |
| 1381 | } |
| 1382 | if (substdio_bput(&sschan[c],rwline.s,rwline.len) == -1) |
| 1383 | { |
| 1384 | fnmake_chanaddr(id,c); |
| 1385 | log3("warning: trouble writing to ",fn.s,"\n"); goto fail; |
| 1386 | } |
| 1387 | break; |
| 1388 | default: |
| 1389 | fnmake_todo(id); |
| 1390 | log3("warning: unknown record type in ",fn.s,"\n"); goto fail; |
| 1391 | } |
| 1392 | } |
| 1393 | |
| 1394 | close(fd); fd = -1; |
| 1395 | |
| 1396 | fnmake_info(id); |
| 1397 | if (substdio_flush(&ssinfo) == -1) |
| 1398 | { log3("warning: trouble writing to ",fn.s,"\n"); goto fail; } |
| 1399 | if (fsync(fdinfo) == -1) |
| 1400 | { log3("warning: trouble fsyncing ",fn.s,"\n"); goto fail; } |
| 1401 | close(fdinfo); fdinfo = -1; |
| 1402 | |
| 1403 | for (c = 0;c < CHANNELS;++c) |
| 1404 | if (fdchan[c] != -1) |
| 1405 | { |
| 1406 | fnmake_chanaddr(id,c); |
| 1407 | if (substdio_flush(&sschan[c]) == -1) |
| 1408 | { log3("warning: trouble writing to ",fn.s,"\n"); goto fail; } |
| 1409 | if (fsync(fdchan[c]) == -1) |
| 1410 | { log3("warning: trouble fsyncing ",fn.s,"\n"); goto fail; } |
| 1411 | close(fdchan[c]); fdchan[c] = -1; |
| 1412 | } |
| 1413 | |
| 1414 | fnmake_todo(id); |
| 1415 | if (substdio_putflush(&sstoqc,fn.s,fn.len) == -1) { cleandied(); return; } |
| 1416 | if (substdio_get(&ssfromqc,&ch,1) != 1) { cleandied(); return; } |
| 1417 | if (ch != '+') |
| 1418 | { |
| 1419 | log3("warning: qmail-clean unable to clean up ",fn.s,"\n"); |
| 1420 | return; |
| 1421 | } |
| 1422 | |
| 1423 | pe.id = id; pe.dt = now(); |
| 1424 | for (c = 0;c < CHANNELS;++c) |
| 1425 | if (flagchan[c]) |
| 1426 | while (!prioq_insert(&pqchan[c],&pe)) nomem(); |
| 1427 | |
| 1428 | for (c = 0;c < CHANNELS;++c) if (flagchan[c]) break; |
| 1429 | if (c == CHANNELS) |
| 1430 | while (!prioq_insert(&pqdone,&pe)) nomem(); |
| 1431 | |
| 1432 | return; |
| 1433 | |
| 1434 | fail: |
| 1435 | if (fd != -1) close(fd); |
| 1436 | if (fdinfo != -1) close(fdinfo); |
| 1437 | for (c = 0;c < CHANNELS;++c) |
| 1438 | if (fdchan[c] != -1) close(fdchan[c]); |
| 1439 | } |
| 1440 | |
| 1441 | |
| 1442 | /* this file is too long ---------------------------------------------- MAIN */ |
| 1443 | |
| 1444 | int getcontrols() { if (control_init() == -1) return 0; |
| 1445 | if (control_readint(&lifetime,"control/queuelifetime") == -1) return 0; |
| 1446 | if (control_readint(&concurrency[0],"control/concurrencylocal") == -1) return 0; |
| 1447 | if (control_readint(&concurrency[1],"control/concurrencyremote") == -1) return 0; |
| 1448 | if (control_rldef(&envnoathost,"control/envnoathost",1,"envnoathost") != 1) return 0; |
| 1449 | if (control_rldef(&bouncefrom,"control/bouncefrom",0,"MAILER-DAEMON") != 1) return 0; |
| 1450 | if (control_rldef(&bouncehost,"control/bouncehost",1,"bouncehost") != 1) return 0; |
| 1451 | if (control_rldef(&doublebouncehost,"control/doublebouncehost",1,"doublebouncehost") != 1) return 0; |
| 1452 | if (control_rldef(&doublebounceto,"control/doublebounceto",0,"postmaster") != 1) return 0; |
| 1453 | if (!stralloc_cats(&doublebounceto,"@")) return 0; |
| 1454 | if (!stralloc_cat(&doublebounceto,&doublebouncehost)) return 0; |
| 1455 | if (!stralloc_0(&doublebounceto)) return 0; |
| 1456 | if (control_readfile(&locals,"control/locals",1) != 1) return 0; |
| 1457 | if (!constmap_init(&maplocals,locals.s,locals.len,0)) return 0; |
| 1458 | switch(control_readfile(&percenthack,"control/percenthack",0)) |
| 1459 | { |
| 1460 | case -1: return 0; |
| 1461 | case 0: if (!constmap_init(&mappercenthack,"",0,0)) return 0; break; |
| 1462 | case 1: if (!constmap_init(&mappercenthack,percenthack.s,percenthack.len,0)) return 0; break; |
| 1463 | } |
| 1464 | switch(control_readfile(&vdoms,"control/virtualdomains",0)) |
| 1465 | { |
| 1466 | case -1: return 0; |
| 1467 | case 0: if (!constmap_init(&mapvdoms,"",0,1)) return 0; break; |
| 1468 | case 1: if (!constmap_init(&mapvdoms,vdoms.s,vdoms.len,1)) return 0; break; |
| 1469 | } |
| 1470 | return 1; } |
| 1471 | |
| 1472 | stralloc newlocals = {0}; |
| 1473 | stralloc newvdoms = {0}; |
| 1474 | |
| 1475 | void regetcontrols() |
| 1476 | { |
| 1477 | int r; |
| 1478 | |
| 1479 | if (control_readfile(&newlocals,"control/locals",1) != 1) |
| 1480 | { log1("alert: unable to reread control/locals\n"); return; } |
| 1481 | r = control_readfile(&newvdoms,"control/virtualdomains",0); |
| 1482 | if (r == -1) |
| 1483 | { log1("alert: unable to reread control/virtualdomains\n"); return; } |
| 1484 | |
| 1485 | constmap_free(&maplocals); |
| 1486 | constmap_free(&mapvdoms); |
| 1487 | |
| 1488 | while (!stralloc_copy(&locals,&newlocals)) nomem(); |
| 1489 | while (!constmap_init(&maplocals,locals.s,locals.len,0)) nomem(); |
| 1490 | |
| 1491 | if (r) |
| 1492 | { |
| 1493 | while (!stralloc_copy(&vdoms,&newvdoms)) nomem(); |
| 1494 | while (!constmap_init(&mapvdoms,vdoms.s,vdoms.len,1)) nomem(); |
| 1495 | } |
| 1496 | else |
| 1497 | while (!constmap_init(&mapvdoms,"",0,1)) nomem(); |
| 1498 | } |
| 1499 | |
| 1500 | void reread() |
| 1501 | { |
| 1502 | if (chdir(auto_qmail) == -1) |
| 1503 | { |
| 1504 | log1("alert: unable to reread controls: unable to switch to home directory\n"); |
| 1505 | return; |
| 1506 | } |
| 1507 | regetcontrols(); |
| 1508 | while (chdir("queue") == -1) |
| 1509 | { |
| 1510 | log1("alert: unable to switch back to queue directory; HELP! sleeping...\n"); |
| 1511 | sleep(10); |
| 1512 | } |
| 1513 | } |
| 1514 | |
| 1515 | void main() |
| 1516 | { |
| 1517 | int fd; |
| 1518 | datetime_sec wakeup; |
| 1519 | fd_set rfds; |
| 1520 | fd_set wfds; |
| 1521 | int nfds; |
| 1522 | struct timeval tv; |
| 1523 | int c; |
| 1524 | |
| 1525 | if (chdir(auto_qmail) == -1) |
| 1526 | { log1("alert: cannot start: unable to switch to home directory\n"); _exit(111); } |
| 1527 | if (!getcontrols()) |
| 1528 | { log1("alert: cannot start: unable to read controls\n"); _exit(111); } |
| 1529 | if (chdir("queue") == -1) |
| 1530 | { log1("alert: cannot start: unable to switch to queue directory\n"); _exit(111); } |
| 1531 | sig_pipeignore(); |
| 1532 | sig_termcatch(sigterm); |
| 1533 | sig_alarmcatch(sigalrm); |
| 1534 | sig_hangupcatch(sighup); |
| 1535 | sig_childdefault(); |
| 1536 | umask(077); |
| 1537 | |
| 1538 | fd = open_write("lock/sendmutex"); |
| 1539 | if (fd == -1) |
| 1540 | { log1("alert: cannot start: unable to open mutex\n"); _exit(111); } |
| 1541 | if (lock_exnb(fd) == -1) |
| 1542 | { log1("alert: cannot start: qmail-send is already running\n"); _exit(111); } |
| 1543 | |
| 1544 | numjobs = 0; |
| 1545 | for (c = 0;c < CHANNELS;++c) |
| 1546 | { |
| 1547 | char ch; |
| 1548 | int u; |
| 1549 | int r; |
| 1550 | do |
| 1551 | r = read(chanfdin[c],&ch,1); |
| 1552 | while ((r == -1) && (errno == error_intr)); |
| 1553 | if (r < 1) |
| 1554 | { log1("alert: cannot start: hath the daemon spawn no fire?\n"); _exit(111); } |
| 1555 | u = (unsigned int) (unsigned char) ch; |
| 1556 | if (concurrency[c] > u) concurrency[c] = u; |
| 1557 | numjobs += concurrency[c]; |
| 1558 | } |
| 1559 | |
| 1560 | fnmake_init(); |
| 1561 | |
| 1562 | comm_init(); |
| 1563 | |
| 1564 | pqstart(); |
| 1565 | job_init(); |
| 1566 | del_init(); |
| 1567 | pass_init(); |
| 1568 | todo_init(); |
| 1569 | cleanup_init(); |
| 1570 | |
| 1571 | while (!flagexitasap || !del_canexit()) |
| 1572 | { |
| 1573 | recent = now(); |
| 1574 | |
| 1575 | if (flagrunasap) { flagrunasap = 0; pqrun(); } |
| 1576 | if (flagreadasap) { flagreadasap = 0; reread(); } |
| 1577 | |
| 1578 | wakeup = recent + SLEEP_FOREVER; |
| 1579 | FD_ZERO(&rfds); |
| 1580 | FD_ZERO(&wfds); |
| 1581 | nfds = 1; |
| 1582 | |
| 1583 | comm_selprep(&nfds,&wfds); |
| 1584 | del_selprep(&nfds,&rfds); |
| 1585 | pass_selprep(&wakeup); |
| 1586 | todo_selprep(&nfds,&rfds,&wakeup); |
| 1587 | cleanup_selprep(&wakeup); |
| 1588 | |
| 1589 | if (wakeup <= recent) tv.tv_sec = 0; |
| 1590 | else tv.tv_sec = wakeup - recent + SLEEP_FUZZ; |
| 1591 | tv.tv_usec = 0; |
| 1592 | |
| 1593 | if (select(nfds,&rfds,&wfds,(fd_set *) 0,&tv) == -1) |
| 1594 | if (errno == error_intr) |
| 1595 | ; |
| 1596 | else |
| 1597 | log1("warning: trouble in select\n"); |
| 1598 | else |
| 1599 | { |
| 1600 | recent = now(); |
| 1601 | |
| 1602 | comm_do(&wfds); |
| 1603 | del_do(&rfds); |
| 1604 | todo_do(&rfds); |
| 1605 | pass_do(); |
| 1606 | cleanup_do(); |
| 1607 | } |
| 1608 | } |
| 1609 | pqfinish(); |
| 1610 | log1("status: exiting\n"); |
| 1611 | _exit(0); |
| 1612 | } |