Mercurial > dnsbl
annotate src/context.cpp @ 164:5809bcdc325b stable-6-0-4
spamassassin changes
| author | carl |
|---|---|
| date | Sun, 26 Aug 2007 19:43:35 -0700 |
| parents | 97d7da45fe2a |
| children | 9b129ed78d7d |
| rev | line source |
|---|---|
| 94 | 1 /* |
| 2 | |
| 152 | 3 Copyright (c) 2007 Carl Byington - 510 Software Group, released under |
| 4 the GPL version 3 or any later version at your choice available at | |
| 5 http://www.gnu.org/licenses/gpl-3.0.txt | |
| 94 | 6 |
| 7 */ | |
| 8 | |
| 9 #include "includes.h" | |
| 10 | |
| 160 | 11 #include <arpa/inet.h> |
| 94 | 12 #include <net/if.h> |
| 160 | 13 #include <netdb.h> |
| 94 | 14 #include <netinet/in.h> |
| 15 #include <netinet/tcp.h> | |
| 160 | 16 #include <sys/ioctl.h> |
| 94 | 17 #include <sys/socket.h> |
| 160 | 18 #include <sys/stat.h> |
| 94 | 19 #include <sys/un.h> |
| 160 | 20 #include <unistd.h> |
| 94 | 21 |
| 22 static char* context_version="$Id$"; | |
| 23 | |
| 153 | 24 char *token_autowhite; |
| 94 | 25 char *token_black; |
| 26 char *token_content; | |
| 27 char *token_context; | |
| 28 char *token_dccfrom; | |
| 29 char *token_dccto; | |
| 30 char *token_default; | |
| 31 char *token_dnsbl; | |
| 32 char *token_dnsbll; | |
| 33 char *token_envfrom; | |
| 34 char *token_envto; | |
| 35 char *token_filter; | |
| 36 char *token_host_limit; | |
| 37 char *token_html_limit; | |
| 38 char *token_html_tags; | |
| 39 char *token_ignore; | |
| 40 char *token_include; | |
| 41 char *token_inherit; | |
| 42 char *token_lbrace; | |
| 43 char *token_mailhost; | |
| 44 char *token_many; | |
| 45 char *token_off; | |
| 46 char *token_ok2; | |
| 47 char *token_ok; | |
| 48 char *token_on; | |
| 136 | 49 char *token_rate; |
| 94 | 50 char *token_rbrace; |
| 51 char *token_semi; | |
| 52 char *token_soft; | |
| 163 | 53 char *token_spamassassin; |
| 94 | 54 char *token_substitute; |
| 55 char *token_tld; | |
| 117 | 56 char *token_cctld; |
| 94 | 57 char *token_unknown; |
| 119 | 58 char *token_uribl; |
| 94 | 59 char *token_verify; |
| 60 char *token_white; | |
| 61 | |
| 62 char *token_myhostname; | |
|
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63 #ifndef HOST_NAME_MAX |
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64 #define HOST_NAME_MAX 255 |
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65 #endif |
| 94 | 66 char myhostname[HOST_NAME_MAX+1]; |
| 67 | |
| 153 | 68 pthread_mutex_t verifier_mutex; // protect the verifier map |
| 94 | 69 verify_map verifiers; |
| 153 | 70 |
| 71 pthread_mutex_t whitelister_mutex; // protect the | |
| 72 whitelister_map whitelisters; | |
| 73 | |
| 94 | 74 string_set all_strings; // owns all the strings, only modified by the config loader thread |
| 75 const int maxlen = 1000; // used for snprintf buffers | |
| 153 | 76 const int maxsmtp_age = 120;// smtp verify sockets older than this are ancient |
| 77 const int maxauto_age = 600;// auto whitelister delay before flushing to file | |
| 94 | 78 extern int NULL_SOCKET; |
|
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79 const time_t ERROR_SMTP_SOCKET_TIME = 600; // number of seconds between attempts to open a socket to an smtp server |
| 94 | 80 |
| 81 | |
| 82 int SMTP::writer() { | |
| 83 #ifdef VERIFY_DEBUG | |
| 84 log("writer() sees buffer with %s", buffer); | |
| 85 log("writer() sees error %d", (int)error); | |
| 86 #endif | |
| 87 int rs = 0; | |
| 88 if (!error) { | |
| 89 int len = strlen(buffer); | |
| 90 while (rs < len) { | |
| 91 int ws = write(fd, buffer+rs, len-rs); | |
| 92 if (ws > 0) { | |
| 93 rs += ws; | |
| 94 } | |
| 95 else { | |
| 96 // peer closed the socket! | |
| 97 rs = 0; | |
| 98 error = true; | |
| 99 break; | |
| 100 } | |
| 101 } | |
| 102 } | |
| 103 return rs; | |
| 104 } | |
| 105 | |
| 106 | |
| 107 int SMTP::reader() { | |
| 108 // read some bytes terminated by lf or end of buffer. | |
| 109 // we may have a multi line response or part thereof in the buffer. | |
| 110 #ifdef VERIFY_DEBUG | |
| 111 log("reader() sees error %d", (int)error); | |
| 112 #endif | |
| 113 if (error) return 0; | |
| 114 int len = maxlen-1; // room for null terminator | |
| 115 while (pending < len) { | |
| 116 int ws = read(fd, buffer+pending, len-pending); | |
| 117 if (ws > 0) { | |
| 118 pending += ws; | |
| 119 if (buffer[pending-1] == '\n') break; | |
| 120 } | |
| 121 else { | |
| 122 // peer closed the socket! | |
| 123 pending = 0; | |
| 124 error = true; | |
| 125 break; | |
| 126 } | |
| 127 } | |
| 128 buffer[pending] = '\0'; | |
| 129 #ifdef VERIFY_DEBUG | |
| 130 log("reader() sees buffer with %s", buffer); | |
| 131 #endif | |
| 132 return pending; | |
| 133 } | |
| 134 | |
| 135 | |
| 136 int SMTP::read_line() { | |
| 137 char *lf = strchr(buffer, '\n'); | |
| 138 if (!lf) { | |
| 139 reader(); // get a lf | |
| 140 lf = strchr(buffer, '\n'); | |
| 141 if (!lf) lf = buffer + pending - 1; | |
| 142 } | |
| 143 return (lf-buffer)+1; // number of bytes in this line | |
| 144 } | |
| 145 | |
| 146 | |
| 97 | 147 void SMTP::flush_line(int r) { |
| 94 | 148 if (pending > r) memmove(buffer, buffer+r, pending-r); |
| 149 pending -= r; | |
| 150 } | |
| 151 | |
| 152 | |
| 153 int SMTP::read_response() { | |
| 154 pending = 0; | |
| 155 buffer[pending] = '\0'; | |
| 156 while (true) { | |
| 157 int r = read_line(); | |
| 158 #ifdef VERIFY_DEBUG | |
| 159 log("read_response() sees line with %s", buffer); | |
| 160 log("read_response() sees line length %d", r); | |
| 161 #endif | |
| 162 if (r == 0) return 0; // failed to read any bytes | |
| 163 if ((r > 4) && (buffer[3] == '-')) { | |
| 164 flush_line(r); | |
| 165 continue; | |
| 166 } | |
| 167 return atoi(buffer); | |
| 168 } | |
| 169 return 0; | |
| 170 } | |
| 171 | |
| 172 | |
| 173 int SMTP::cmd(char *c) { | |
| 174 if (c) { | |
| 175 init(); | |
| 176 append(c); | |
| 177 } | |
| 178 append("\r\n"); | |
| 179 writer(); | |
| 180 return read_response(); | |
| 181 } | |
| 182 | |
| 183 | |
| 184 int SMTP::helo() { | |
| 185 if (read_response() != 220) return 0; | |
| 186 init(); | |
| 187 append("HELO "); | |
| 188 append(token_myhostname); | |
| 189 return cmd(NULL); | |
| 190 } | |
| 191 | |
| 192 | |
| 193 int SMTP::rset() { | |
| 194 int rc = cmd("RSET"); | |
| 195 efrom[0] = '\0'; | |
| 196 return rc; | |
| 197 } | |
| 198 | |
| 199 | |
| 200 int SMTP::from(char *f) { | |
| 101 | 201 // the mail from address was originally passed in from sendmail enclosed in |
| 202 // <>. to_lower_string() removed the <> and converted the rest to lowercase, | |
| 203 // except in the case of an empty return path, which was left as the two | |
| 204 // character string <>. | |
| 94 | 205 if (strncmp(efrom, f, maxlen)) { |
| 206 rset(); | |
| 207 strncpy(efrom, f, maxlen); | |
| 208 init(); | |
| 209 append("MAIL FROM:<"); | |
| 101 | 210 if (*f != '<') append(f); |
| 94 | 211 append(">"); |
| 212 return cmd(NULL); | |
| 213 } | |
| 214 return 250; // pretend it worked | |
| 215 } | |
| 216 | |
| 217 | |
| 218 int SMTP::rcpt(char *t) { | |
| 219 init(); | |
| 220 append("RCPT TO:<"); | |
| 221 append(t); | |
| 222 append(">"); | |
| 223 return cmd(NULL); | |
| 224 } | |
| 225 | |
| 226 | |
| 227 int SMTP::quit() { | |
| 228 return cmd("QUIT"); | |
| 229 } | |
| 230 | |
| 231 | |
| 232 void SMTP::closefd() { | |
| 233 shutdown(fd, SHUT_RDWR); | |
| 234 close(fd); | |
| 235 } | |
| 236 | |
| 237 | |
| 238 #ifdef VERIFY_DEBUG | |
| 239 void SMTP::log(char *m, int v) { | |
| 240 char buf[maxlen]; | |
| 241 snprintf(buf, maxlen, m, v); | |
| 242 my_syslog(buf); | |
| 243 } | |
| 244 | |
| 245 | |
| 246 void SMTP::log(char *m, char *v) { | |
| 247 char buf[maxlen]; | |
| 248 snprintf(buf, maxlen, m, v); | |
| 249 my_syslog(buf); | |
| 250 } | |
| 251 #endif | |
| 252 | |
| 253 | |
| 153 | 254 //////////////////////////////////////////////// |
| 255 // smtp verifier so backup mx machines can see the valid users | |
| 256 // | |
| 94 | 257 VERIFY::VERIFY(char *h) { |
| 258 host = h; | |
| 259 last_err = 0; | |
| 260 pthread_mutex_init(&mutex, 0); | |
| 261 } | |
| 262 | |
| 263 | |
| 264 void VERIFY::closer() { | |
| 265 bool ok = true; | |
| 266 while (ok) { | |
| 267 SMTP *conn = NULL; | |
| 268 pthread_mutex_lock(&mutex); | |
| 269 if (connections.empty()) { | |
| 270 ok = false; | |
| 271 } | |
| 272 else { | |
| 273 conn = connections.front(); | |
| 274 time_t now = time(NULL); | |
| 153 | 275 if ((now - conn->get_stamp()) > maxsmtp_age) { |
| 94 | 276 // this connection is ancient, remove it |
| 277 connections.pop_front(); | |
| 278 } | |
| 279 else { | |
| 280 ok = false; | |
| 281 conn = NULL; | |
| 282 } | |
| 283 } | |
| 284 pthread_mutex_unlock(&mutex); | |
| 285 // avoid doing this work inside the mutex lock | |
| 286 if (conn) { | |
| 287 #ifdef VERIFY_DEBUG | |
| 288 conn->log("closer() closes ancient %d", conn->get_fd()); | |
| 289 #endif | |
| 290 delete conn; | |
| 291 } | |
| 292 } | |
| 293 } | |
| 294 | |
| 295 | |
| 296 SMTP* VERIFY::get_connection() { | |
| 297 SMTP *conn = NULL; | |
| 298 pthread_mutex_lock(&mutex); | |
| 299 if (!connections.empty()) { | |
| 300 conn = connections.front(); | |
| 301 connections.pop_front(); | |
| 302 #ifdef VERIFY_DEBUG | |
| 303 conn->log("get_connection() %d from cache", conn->get_fd()); | |
| 304 #endif | |
| 305 } | |
| 306 pthread_mutex_unlock(&mutex); | |
| 307 if (conn) return conn; | |
| 308 int sock = NULL_SOCKET; | |
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309 if ((time(NULL) - last_err) > ERROR_SMTP_SOCKET_TIME) { |
| 94 | 310 // nothing recent, maybe this time it will work |
| 311 hostent *h = gethostbyname(host); | |
| 312 if (h) { | |
| 313 sockaddr_in server; | |
| 314 server.sin_family = h->h_addrtype; | |
| 315 server.sin_port = htons(25); | |
| 316 memcpy(&server.sin_addr, h->h_addr_list[0], h->h_length); | |
| 317 sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 318 if (sock != NULL_SOCKET) { | |
| 319 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0); | |
| 320 if (!rc) { | |
| 321 shutdown(sock, SHUT_RDWR); | |
| 322 close(sock); | |
| 323 sock = NULL_SOCKET; | |
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324 last_err = time(NULL); |
| 94 | 325 } |
| 326 } | |
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327 else last_err = time(NULL); |
| 94 | 328 } |
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329 else last_err = time(NULL); |
| 94 | 330 } |
| 331 if (sock != NULL_SOCKET) { | |
| 332 conn = new SMTP(sock); | |
| 333 #ifdef VERIFY_DEBUG | |
| 334 conn->log("get_connection() %d new socket", conn->get_fd()); | |
| 335 #endif | |
| 336 if (conn->helo() == 250) return conn; | |
| 337 delete conn; | |
| 338 } | |
| 339 return NULL; | |
| 340 } | |
| 341 | |
| 342 | |
| 343 void VERIFY::put_connection(SMTP *conn) { | |
| 344 if (conn->err()) { | |
| 345 #ifdef VERIFY_DEBUG | |
| 346 conn->log("put_socket() %d with error, close it", conn->get_fd()); | |
| 347 #endif | |
| 348 delete conn; | |
| 349 last_err = time(NULL); | |
| 350 } | |
| 351 else { | |
| 352 #ifdef VERIFY_DEBUG | |
| 353 conn->log("put_socket() %d", conn->get_fd()); | |
| 354 #endif | |
| 355 conn->now(); | |
| 356 pthread_mutex_lock(&mutex); | |
| 357 connections.push_back(conn); | |
| 358 pthread_mutex_unlock(&mutex); | |
| 359 } | |
| 360 } | |
| 361 | |
| 362 | |
| 363 bool VERIFY::ok(char *from, char *to) { | |
| 364 if (host == token_myhostname) return true; | |
| 365 SMTP *conn = get_connection(); | |
| 366 if (!conn) return true; // cannot verify right now, we have socket errors | |
| 367 int rc; | |
| 368 rc = conn->from(from); | |
| 369 #ifdef VERIFY_DEBUG | |
| 370 conn->log("verify::ok() from sees %d", rc); | |
| 371 #endif | |
| 372 if (rc != 250) { | |
| 373 conn->rset(); | |
| 374 put_connection(conn); | |
| 375 return (rc >= 500) ? false : true; | |
| 376 } | |
| 377 rc = conn->rcpt(to); | |
| 378 #ifdef VERIFY_DEBUG | |
| 379 conn->log("verify::ok() rcpt sees %d", rc); | |
| 380 #endif | |
| 381 put_connection(conn); | |
| 382 return (rc >= 500) ? false : true; | |
| 383 } | |
| 384 | |
| 385 | |
| 153 | 386 //////////////////////////////////////////////// |
| 387 // setup a new smtp verify host | |
| 388 // | |
| 389 VERIFYP add_verify_host(char *host); | |
| 390 VERIFYP add_verify_host(char *host) { | |
| 391 VERIFYP rc = NULL; | |
| 392 pthread_mutex_lock(&verifier_mutex); | |
| 393 verify_map::iterator i = verifiers.find(host); | |
| 394 if (i == verifiers.end()) { | |
| 395 rc = new VERIFY(host); | |
| 396 verifiers[host] = rc; | |
| 397 } | |
| 398 else rc = (*i).second; | |
| 399 pthread_mutex_unlock(&verifier_mutex); | |
| 400 return rc; | |
| 401 } | |
| 402 | |
| 403 | |
| 404 //////////////////////////////////////////////// | |
| 405 // thread to check for verify hosts with old sockets that we can close | |
| 406 // | |
| 407 void* verify_closer(void *arg) { | |
| 408 while (true) { | |
| 409 sleep(maxsmtp_age); | |
| 410 pthread_mutex_lock(&verifier_mutex); | |
| 411 for (verify_map::iterator i=verifiers.begin(); i!=verifiers.end(); i++) { | |
| 412 VERIFYP v = (*i).second; | |
| 413 v->closer(); | |
| 414 } | |
| 415 pthread_mutex_unlock(&verifier_mutex); | |
| 416 } | |
| 417 return NULL; | |
| 418 } | |
| 419 | |
| 420 | |
| 421 //////////////////////////////////////////////// | |
| 422 // automatic whitelister | |
| 423 // | |
| 424 WHITELISTER::WHITELISTER(char *f, int d) { | |
| 425 fn = f; | |
| 426 days = d; | |
| 427 pthread_mutex_init(&mutex, 0); | |
| 428 need = false; | |
| 160 | 429 loaded = time(NULL); |
| 430 merge(); | |
| 431 } | |
| 432 | |
| 433 | |
| 434 void WHITELISTER::merge() { | |
| 435 time_t now = time(NULL); | |
| 154 | 436 ifstream ifs; |
| 437 ifs.open(fn); | |
| 438 if (!ifs.fail()) { | |
| 439 const int maxlen = 1000; | |
| 440 char buf[maxlen]; | |
| 441 while (ifs.getline(buf, maxlen)) { | |
| 442 char *p = strchr(buf, ' '); | |
| 443 if (p) { | |
| 444 *p = '\0'; | |
| 160 | 445 char *who = strdup(buf); |
| 446 time_t when = atoi(p+1); | |
| 447 if ((when == 0) || (when > now)) when = now; | |
| 448 autowhite_sent::iterator i = rcpts.find(who); | |
| 449 if (i != rcpts.end()) { | |
| 450 time_t wh = (*i).second; | |
| 451 if (when > wh) rcpts[who] = when; | |
| 452 } | |
| 453 else { | |
| 454 rcpts[who] = when; | |
| 455 } | |
| 154 | 456 } |
| 457 } | |
| 458 } | |
| 459 ifs.close(); | |
| 153 | 460 } |
| 461 | |
| 462 | |
| 463 void WHITELISTER::writer() { | |
| 464 pthread_mutex_lock(&mutex); | |
| 465 time_t limit = time(NULL) - days*86400; | |
| 160 | 466 |
| 467 // check for manually modified autowhitelist file | |
| 468 struct stat st; | |
| 469 if (stat(fn, &st)) need = true; // file has disappeared | |
| 470 else if (st.st_mtime > loaded) { | |
| 471 // file has been manually updated, merge new entries | |
| 472 merge(); | |
| 473 need = true; | |
| 474 } | |
| 475 | |
| 476 // purge old entries | |
| 153 | 477 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end();) { |
| 478 time_t when = (*i).second; | |
| 479 if (when < limit) { | |
| 154 | 480 char *who = (*i).first; |
| 481 free(who); | |
| 153 | 482 autowhite_sent::iterator j = i; |
| 483 j++; | |
| 484 rcpts.erase(i); | |
| 485 i = j; | |
| 486 need = true; | |
| 487 } | |
| 488 else i++; | |
| 489 } | |
| 160 | 490 |
| 153 | 491 if (need) { |
| 492 // dump the file | |
| 154 | 493 ofstream ofs; |
| 494 ofs.open(fn); | |
| 495 if (!ofs.fail()) { | |
| 153 | 496 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end(); i++) { |
| 497 char *who = (*i).first; | |
| 498 int when = (*i).second; | |
| 154 | 499 ofs << who << " " << when << endl; |
| 153 | 500 } |
| 501 } | |
| 154 | 502 ofs.close(); |
| 156 | 503 need = false; |
| 160 | 504 loaded = time(NULL); // update load time |
| 153 | 505 } |
| 506 pthread_mutex_unlock(&mutex); | |
| 507 } | |
| 508 | |
| 509 | |
| 510 void WHITELISTER::sent(char *to) { | |
| 154 | 511 // we take ownership of the string |
| 153 | 512 pthread_mutex_lock(&mutex); |
| 513 need = true; | |
| 514 rcpts[to] = time(NULL); | |
| 515 pthread_mutex_unlock(&mutex); | |
| 516 } | |
| 517 | |
| 518 | |
| 519 bool WHITELISTER::is_white(char *from) { | |
| 520 pthread_mutex_lock(&mutex); | |
| 521 autowhite_sent::iterator i = rcpts.find(from); | |
| 162 | 522 bool rc = (i != rcpts.end()); |
| 153 | 523 pthread_mutex_unlock(&mutex); |
| 524 return rc; | |
| 525 } | |
| 526 | |
| 527 | |
| 528 //////////////////////////////////////////////// | |
| 529 // setup a new auto whitelister file | |
| 530 // | |
| 531 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 532 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 533 WHITELISTERP rc = NULL; | |
| 534 pthread_mutex_lock(&whitelister_mutex); | |
| 535 whitelister_map::iterator i = whitelisters.find(fn); | |
| 536 if (i == whitelisters.end()) { | |
| 537 rc = new WHITELISTER(fn, days); | |
| 538 whitelisters[fn] = rc; | |
| 539 } | |
| 156 | 540 else { |
| 541 rc = (*i).second; | |
| 542 rc->set_days(days); | |
| 543 } | |
| 153 | 544 pthread_mutex_unlock(&whitelister_mutex); |
| 545 return rc; | |
| 546 } | |
| 547 | |
| 548 | |
| 549 //////////////////////////////////////////////// | |
| 550 // thread to check for whitelister hosts with old sockets that we can close | |
| 551 // | |
| 552 void* whitelister_writer(void *arg) { | |
| 553 while (true) { | |
| 554 sleep(maxauto_age); | |
| 555 pthread_mutex_lock(&whitelister_mutex); | |
| 556 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 557 WHITELISTERP v = (*i).second; | |
| 558 v->writer(); | |
| 559 } | |
| 560 pthread_mutex_unlock(&whitelister_mutex); | |
| 561 } | |
| 562 return NULL; | |
| 563 } | |
| 564 | |
| 565 | |
| 94 | 566 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 567 name = n; | |
| 568 suffix = s; | |
| 569 message = m; | |
| 570 } | |
| 571 | |
| 572 | |
| 573 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 574 return (strcmp(name, rhs.name) == 0) && | |
| 575 (strcmp(suffix, rhs.suffix) == 0) && | |
| 576 (strcmp(message, rhs.message) == 0); | |
| 577 } | |
| 578 | |
| 579 | |
| 580 CONFIG::CONFIG() { | |
| 581 reference_count = 0; | |
| 582 generation = 0; | |
| 583 load_time = 0; | |
| 584 default_context = NULL; | |
| 585 } | |
| 586 | |
| 587 | |
| 588 CONFIG::~CONFIG() { | |
| 146 | 589 if (debug_syslog) { |
| 590 char buf[maxlen]; | |
| 591 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 592 my_syslog(buf); | |
| 593 } | |
| 94 | 594 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 595 CONTEXT *c = *i; | |
| 596 delete c; | |
| 597 } | |
| 598 } | |
| 599 | |
| 600 | |
| 601 void CONFIG::add_context(CONTEXTP con) { | |
| 602 contexts.push_back(con); | |
| 603 if (!default_context && !con->get_parent()) { | |
| 604 // first global context | |
| 605 default_context = con; | |
| 606 } | |
| 607 } | |
| 608 | |
| 609 | |
| 610 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 611 context_map::iterator i = env_to.find(to); | |
| 612 if (i != env_to.end()) { | |
| 613 CONTEXTP c = (*i).second; | |
| 614 if ((c != con) && (c != con->get_parent())) { | |
| 615 if (debug_syslog) { | |
| 616 char oldname[maxlen]; | |
| 617 char newname[maxlen]; | |
| 618 char *oldn = c->get_full_name(oldname, maxlen); | |
| 619 char *newn = con->get_full_name(newname, maxlen); | |
| 620 char buf[maxlen*3]; | |
| 621 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 622 my_syslog(buf); | |
| 623 } | |
| 624 } | |
| 625 } | |
| 626 env_to[to] = con; | |
| 627 } | |
| 628 | |
| 629 | |
| 630 CONTEXTP CONFIG::find_context(char *to) { | |
| 631 context_map::iterator i = env_to.find(to); | |
| 117 | 632 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 633 char *x = strchr(to, '@'); |
| 634 if (x) { | |
| 635 x++; | |
| 636 i = env_to.find(x); | |
| 117 | 637 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 638 char y = *x; |
| 639 *x = '\0'; | |
| 640 i = env_to.find(to); | |
| 641 *x = y; | |
| 642 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 643 } | |
| 644 return default_context; | |
| 645 } | |
| 646 | |
| 647 | |
| 648 void CONFIG::dump() { | |
|
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649 if (default_context) default_context->dump(true); |
| 94 | 650 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 651 CONTEXTP c = *i; | |
| 652 CONTEXTP p = c->get_parent(); | |
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653 if (!p && (c != default_context)) c->dump(false); |
| 94 | 654 } |
| 655 char buf[maxlen]; | |
| 656 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 657 char *to = (*i).first; | |
| 658 CONTEXTP con = (*i).second; | |
| 659 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 660 } | |
| 661 } | |
| 662 | |
| 663 | |
| 664 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 665 parent = parent_; | |
| 666 name = name_; | |
| 667 verify_host = NULL; | |
| 153 | 668 verifier = NULL; |
| 669 autowhite_file = NULL; | |
| 670 whitelister = NULL; | |
| 94 | 671 env_from_default = (parent) ? token_inherit : token_unknown; |
| 672 content_filtering = (parent) ? parent->content_filtering : false; | |
| 673 content_suffix = NULL; | |
| 674 content_message = NULL; | |
| 119 | 675 uribl_suffix = NULL; |
| 676 uribl_message = NULL; | |
| 94 | 677 host_limit = (parent) ? parent->host_limit : 0; |
| 678 host_limit_message = NULL; | |
| 679 host_random = (parent) ? parent->host_random : false; | |
| 680 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 681 tag_limit_message = NULL; | |
| 163 | 682 spamassassin_limit = (parent) ? parent->spamassassin_limit : 0; |
| 140 | 683 default_rcpt_rate = INT_MAX; |
| 94 | 684 } |
| 685 | |
| 686 | |
| 687 CONTEXT::~CONTEXT() { | |
| 688 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 689 DNSBLP d = (*i).second; | |
| 690 // delete the underlying DNSBL objects. | |
| 691 delete d; | |
| 692 } | |
| 693 } | |
| 694 | |
| 695 | |
| 696 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 697 if (p == parent) return true; | |
| 698 if (!parent) return false; | |
| 699 return parent->is_parent(p); | |
| 700 } | |
| 701 | |
| 702 | |
| 703 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 704 if (!parent) return name; | |
| 705 char buf[maxlen]; | |
| 706 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 707 return buffer; | |
| 708 } | |
| 709 | |
| 710 | |
| 711 bool CONTEXT::cover_env_to(char *to) { | |
| 712 char buffer[maxlen]; | |
| 713 char *x = strchr(to, '@'); | |
| 714 if (x) x++; | |
| 715 else x = to; | |
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716 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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717 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 718 string_set::iterator i = env_to.find(x); |
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719 if (i != env_to.end()) return true; // we cover the entire domain |
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720 if (x != to) { |
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721 i = env_to.find(to); |
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722 if (i != env_to.end()) return true; // we cover the specific email address |
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723 } |
| 94 | 724 return false; |
| 725 } | |
| 726 | |
| 727 | |
| 728 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 729 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 730 return verifier; | |
| 731 else if (parent) | |
| 732 return parent->find_verify(to); | |
| 733 else | |
| 734 return NULL; | |
| 735 } | |
| 94 | 736 |
| 153 | 737 |
| 162 | 738 WHITELISTERP CONTEXT::find_autowhite(char *from, char *to) { |
| 739 if (whitelister && cover_env_to(to) && !cover_env_to(from)) | |
| 153 | 740 return whitelister; |
| 741 else if (parent) | |
| 162 | 742 return parent->find_autowhite(from, to); |
| 153 | 743 else |
| 744 return NULL; | |
| 94 | 745 } |
| 746 | |
| 747 | |
| 136 | 748 int CONTEXT::find_rate(char *user) { |
| 140 | 749 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 750 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 751 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 752 } |
| 753 | |
| 754 | |
| 94 | 755 char *CONTEXT::find_from(char *from) { |
| 153 | 756 if (whitelister && whitelister->is_white(from)) return token_white; |
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757 char *rc = env_from_default; |
| 94 | 758 string_map::iterator i = env_from.find(from); |
| 117 | 759 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 760 else { |
| 761 char *x = strchr(from, '@'); | |
| 762 if (x) { | |
| 763 x++; | |
| 764 i = env_from.find(x); | |
| 117 | 765 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 766 else { |
| 767 char y = *x; | |
| 768 *x = '\0'; | |
| 769 i = env_from.find(from); | |
| 770 *x = y; | |
| 771 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 772 } | |
| 773 } | |
| 774 } | |
| 775 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 776 return (rc == token_inherit) ? token_unknown : rc; | |
| 777 } | |
| 778 | |
| 779 | |
| 780 CONTEXTP CONTEXT::find_context(char *from) { | |
| 781 context_map::iterator i = env_from_context.find(from); | |
| 117 | 782 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 783 char *x = strchr(from, '@'); |
| 784 if (x) { | |
| 785 x++; | |
| 786 i = env_from_context.find(x); | |
| 117 | 787 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 788 char y = *x; |
| 789 *x = '\0'; | |
| 790 i = env_from_context.find(from); | |
| 791 *x = y; | |
| 792 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 793 } | |
| 794 return this; | |
| 795 } | |
| 796 | |
| 797 | |
| 798 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 799 context_map::iterator i = children.find(name); | |
| 800 if (i != children.end()) return (*i).second; | |
| 801 return NULL; | |
| 802 } | |
| 803 | |
| 804 | |
| 805 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 806 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 807 if (i != dnsbl_names.end()) return (*i).second; | |
| 808 if (parent) return parent->find_dnsbl(name); | |
| 809 return NULL; | |
| 810 } | |
| 811 | |
| 812 | |
| 813 char* CONTEXT::get_content_suffix() { | |
| 814 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 815 return content_suffix; | |
| 816 } | |
| 817 | |
| 818 | |
| 119 | 819 char* CONTEXT::get_uribl_suffix() { |
| 820 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 821 return uribl_suffix; | |
| 822 } | |
| 823 | |
| 824 | |
| 94 | 825 char* CONTEXT::get_content_message() { |
| 826 if (!content_message && parent) return parent->get_content_message(); | |
| 827 return content_message; | |
| 828 } | |
| 829 | |
| 830 | |
| 119 | 831 char* CONTEXT::get_uribl_message() { |
| 832 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 833 return uribl_message; | |
| 834 } | |
| 835 | |
| 836 | |
| 94 | 837 string_set& CONTEXT::get_content_host_ignore() { |
| 838 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 839 return content_host_ignore; | |
| 840 } | |
| 841 | |
| 842 | |
| 117 | 843 string_set& CONTEXT::get_content_cctlds() { |
| 844 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 845 return content_cctlds; | |
| 846 } | |
| 847 | |
| 94 | 848 string_set& CONTEXT::get_content_tlds() { |
| 849 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 850 return content_tlds; | |
| 851 } | |
| 852 | |
| 853 | |
| 854 string_set& CONTEXT::get_html_tags() { | |
| 855 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 856 return html_tags; | |
| 857 } | |
| 858 | |
| 859 | |
| 860 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 861 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 862 return dnsbl_list; | |
| 863 } | |
| 864 | |
| 865 | |
| 163 | 866 bool CONTEXT::acceptable_content(recorder &memory, int score, char *&msg) { |
| 867 if (spamassassin_limit && (score > spamassassin_limit)) { | |
| 868 msg = "Mail rejected by spam assassin"; | |
| 869 } | |
| 94 | 870 if (memory.excessive_bad_tags(tag_limit)) { |
| 871 msg = tag_limit_message; | |
| 872 return false; | |
| 873 } | |
| 874 if (!host_random && memory.excessive_hosts(host_limit)) { | |
| 875 msg = host_limit_message; | |
| 876 return false; | |
| 877 } | |
| 878 return true; | |
| 879 } | |
| 880 | |
| 881 | |
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882 void CONTEXT::dump(bool isdefault, int level) { |
| 94 | 883 char indent[maxlen]; |
| 884 int i = min(maxlen-1, level*4); | |
| 885 memset(indent, ' ', i); | |
| 886 indent[i] = '\0'; | |
| 887 char buf[maxlen]; | |
| 888 char *fullname = get_full_name(buf,maxlen); | |
| 889 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 890 | |
| 891 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 892 char *n = (*i).first; | |
| 893 DNSBL &d = *(*i).second; | |
| 894 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 895 } | |
| 896 | |
| 145 | 897 dnsblp_list dl = get_dnsbl_list(); |
| 898 if (!dl.empty()) { | |
| 94 | 899 printf("%s dnsbl_list", indent); |
| 145 | 900 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 901 DNSBL &d = *(*i); |
| 902 printf(" %s", d.name); | |
| 903 } | |
| 904 printf("; \n"); | |
| 905 } | |
| 906 | |
| 907 if (content_filtering) { | |
| 908 printf("%s content on { \n", indent, env_from_default); | |
| 909 if (content_suffix) { | |
| 910 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 911 } | |
| 119 | 912 if (uribl_suffix) { |
| 913 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 914 } | |
| 94 | 915 if (!content_host_ignore.empty()) { |
| 916 printf("%s ignore { \n", indent); | |
| 917 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 918 printf("%s %s; \n", indent, *i); | |
| 919 } | |
| 920 printf("%s }; \n", indent); | |
| 921 } | |
| 117 | 922 if (!content_cctlds.empty()) { |
| 923 printf("%s cctld { \n", indent); | |
| 924 printf("%s ", indent); | |
| 925 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 926 printf("%s; ", *i); | |
| 927 } | |
| 928 printf("\n%s }; \n", indent); | |
| 929 } | |
| 94 | 930 if (!content_tlds.empty()) { |
| 931 printf("%s tld { \n", indent); | |
| 932 printf("%s ", indent); | |
| 933 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 934 printf("%s; ", *i); | |
| 935 } | |
| 936 printf("\n%s }; \n", indent); | |
| 937 } | |
| 938 if (!html_tags.empty()) { | |
| 939 printf("%s html_tags { \n", indent); | |
| 940 printf("%s ", indent); | |
| 941 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 942 printf("%s; ", *i); | |
| 943 } | |
| 944 printf("\n%s }; \n", indent); | |
| 945 } | |
| 946 if (host_limit_message) { | |
| 947 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 948 } | |
| 949 else if (host_random) { | |
| 950 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 951 } | |
| 952 else { | |
| 953 printf("%s host_limit off; \n", indent); | |
| 954 } | |
| 955 if (tag_limit_message) { | |
| 956 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 957 } | |
| 958 else { | |
| 959 printf("%s html_limit off; \n", indent); | |
| 960 } | |
| 163 | 961 printf("%s spamassassin %d; \n", indent, spamassassin_limit); |
| 94 | 962 printf("%s }; \n", indent); |
| 963 } | |
| 964 else { | |
| 965 printf("%s content off {}; \n", indent, env_from_default); | |
| 966 } | |
| 967 | |
| 968 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 969 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 970 printf("%s %s; \n", indent, *i); | |
| 971 } | |
| 972 printf("%s }; \n", indent); | |
| 973 | |
| 974 if (verify_host) { | |
| 975 printf("%s verify %s; \n", indent, verify_host); | |
| 976 } | |
| 977 | |
| 153 | 978 if (autowhite_file && whitelister) { |
| 979 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 980 } | |
| 981 | |
| 94 | 982 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 983 CONTEXTP c = (*i).second; | |
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984 c->dump(false, level+1); |
| 94 | 985 } |
| 986 | |
| 987 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 988 if (!env_from.empty()) { | |
| 989 printf("%s // white/black/unknown \n", indent); | |
| 990 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 991 char *f = (*i).first; | |
| 992 char *t = (*i).second; | |
| 993 printf("%s %s \t%s; \n", indent, f, t); | |
| 994 } | |
| 995 } | |
| 996 if (!env_from_context.empty()) { | |
| 997 printf("%s // child contexts \n", indent); | |
| 998 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 999 char *f = (*j).first; | |
| 1000 CONTEXTP t = (*j).second; | |
| 1001 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 1002 } | |
| 1003 } | |
| 1004 printf("%s }; \n", indent); | |
| 1005 | |
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1006 if (isdefault) { |
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1007 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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1008 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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1009 char *u = (*j).first; |
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1010 int l = (*j).second; |
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1011 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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1012 } |
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1013 printf("%s }; \n", indent); |
| 136 | 1014 } |
| 1015 | |
| 94 | 1016 printf("%s }; \n", indent); |
| 1017 } | |
| 1018 | |
| 1019 | |
| 1020 //////////////////////////////////////////////// | |
| 1021 // helper to discard the strings held by a string_set | |
| 1022 // | |
| 1023 void discard(string_set &s) { | |
| 1024 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 1025 free(*i); | |
| 1026 } | |
| 1027 s.clear(); | |
| 1028 } | |
| 1029 | |
| 1030 | |
| 1031 //////////////////////////////////////////////// | |
| 1032 // helper to register a string in a string set | |
| 1033 // | |
| 1034 char* register_string(string_set &s, char *name) { | |
| 1035 string_set::iterator i = s.find(name); | |
| 1036 if (i != s.end()) return *i; | |
| 1037 char *x = strdup(name); | |
| 1038 s.insert(x); | |
| 1039 return x; | |
| 1040 } | |
| 1041 | |
| 1042 | |
| 1043 //////////////////////////////////////////////// | |
| 1044 // register a global string | |
| 1045 // | |
| 1046 char* register_string(char *name) { | |
| 1047 return register_string(all_strings, name); | |
| 1048 } | |
| 1049 | |
| 1050 | |
| 1051 //////////////////////////////////////////////// | |
| 164 | 1052 // clear all global strings, helper for valgrind checking |
| 1053 // | |
| 1054 void clear_strings() { | |
| 1055 discard(all_strings); | |
| 1056 } | |
| 1057 | |
| 1058 | |
| 1059 //////////////////////////////////////////////// | |
| 94 | 1060 // |
| 1061 bool tsa(TOKEN &tok, char *token); | |
| 1062 bool tsa(TOKEN &tok, char *token) { | |
| 1063 char *have = tok.next(); | |
| 1064 if (have == token) return true; | |
| 1065 tok.token_error(token, have); | |
| 1066 return false; | |
| 1067 } | |
| 1068 | |
| 1069 | |
| 1070 //////////////////////////////////////////////// | |
| 1071 // | |
| 1072 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1073 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1074 char *name = tok.next(); | |
| 1075 char *suf = tok.next(); | |
| 1076 char *msg = tok.next(); | |
| 1077 if (!tsa(tok, token_semi)) return false; | |
| 1078 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1079 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1080 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1081 // duplicate redefinition, ignore it | |
| 1082 delete dnsnew; | |
| 1083 return true; | |
| 1084 } | |
| 1085 me.add_dnsbl(name, dnsnew); | |
| 1086 return true; | |
| 1087 } | |
| 1088 | |
| 1089 | |
| 1090 //////////////////////////////////////////////// | |
| 1091 // | |
| 1092 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1093 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1094 while (true) { | |
| 1095 char *have = tok.next(); | |
| 1096 if (!have) break; | |
| 1097 if (have == token_semi) break; | |
| 1098 DNSBLP dns = me.find_dnsbl(have); | |
| 1099 if (dns) { | |
| 1100 me.add_dnsbl(dns); | |
| 1101 } | |
| 1102 else { | |
| 1103 tok.token_error("dnsbl name", have); | |
| 1104 return false; | |
| 1105 } | |
| 1106 } | |
| 1107 return true; | |
| 1108 } | |
| 1109 | |
| 1110 | |
| 1111 //////////////////////////////////////////////// | |
| 1112 // | |
| 1113 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1114 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1115 char *setting = tok.next(); | |
| 1116 if (setting == token_on) { | |
| 1117 me.set_content_filtering(true); | |
| 1118 } | |
| 1119 else if (setting == token_off) { | |
| 1120 me.set_content_filtering(false); | |
| 1121 } | |
| 1122 else { | |
| 1123 tok.token_error("on/off", setting); | |
| 1124 return false; | |
| 1125 } | |
| 1126 if (!tsa(tok, token_lbrace)) return false; | |
| 1127 while (true) { | |
| 1128 char *have = tok.next(); | |
| 1129 if (!have) break; | |
| 1130 if (have == token_filter) { | |
| 1131 char *suffix = tok.next(); | |
| 1132 char *messag = tok.next(); | |
| 1133 me.set_content_suffix(suffix); | |
| 1134 me.set_content_message(messag); | |
| 1135 if (!tsa(tok, token_semi)) return false; | |
| 1136 } | |
| 119 | 1137 else if (have == token_uribl) { |
| 1138 char *suffix = tok.next(); | |
| 1139 char *messag = tok.next(); | |
| 1140 me.set_uribl_suffix(suffix); | |
| 1141 me.set_uribl_message(messag); | |
| 1142 if (!tsa(tok, token_semi)) return false; | |
| 1143 } | |
| 94 | 1144 else if (have == token_ignore) { |
| 1145 if (!tsa(tok, token_lbrace)) return false; | |
| 1146 while (true) { | |
| 1147 if (!have) break; | |
| 1148 char *have = tok.next(); | |
| 1149 if (have == token_rbrace) break; // done | |
| 1150 me.add_ignore(have); | |
| 1151 } | |
| 1152 if (!tsa(tok, token_semi)) return false; | |
| 1153 } | |
| 117 | 1154 else if (have == token_cctld) { |
| 1155 if (!tsa(tok, token_lbrace)) return false; | |
| 1156 while (true) { | |
| 1157 char *have = tok.next(); | |
| 1158 if (!have) break; | |
| 1159 if (have == token_rbrace) break; // done | |
| 1160 me.add_cctld(have); | |
| 1161 } | |
| 1162 if (!tsa(tok, token_semi)) return false; | |
| 1163 } | |
| 94 | 1164 else if (have == token_tld) { |
| 1165 if (!tsa(tok, token_lbrace)) return false; | |
| 1166 while (true) { | |
| 1167 char *have = tok.next(); | |
| 1168 if (!have) break; | |
| 1169 if (have == token_rbrace) break; // done | |
| 1170 me.add_tld(have); | |
| 1171 } | |
| 1172 if (!tsa(tok, token_semi)) return false; | |
| 1173 } | |
| 1174 else if (have == token_html_limit) { | |
| 1175 have = tok.next(); | |
| 1176 if (have == token_on) { | |
| 1177 me.set_tag_limit(tok.nextint()); | |
| 1178 me.set_tag_message(tok.next()); | |
| 1179 } | |
| 1180 else if (have == token_off) { | |
| 1181 me.set_tag_limit(0); | |
| 1182 me.set_tag_message(NULL); | |
| 1183 } | |
| 1184 else { | |
| 1185 tok.token_error("on/off", have); | |
| 1186 return false; | |
| 1187 } | |
| 1188 if (!tsa(tok, token_semi)) return false; | |
| 1189 } | |
| 1190 else if (have == token_html_tags) { | |
| 1191 if (!tsa(tok, token_lbrace)) return false; | |
| 1192 while (true) { | |
| 1193 char *have = tok.next(); | |
| 1194 if (!have) break; | |
| 1195 if (have == token_rbrace) { | |
| 1196 break; // done | |
| 1197 } | |
| 1198 else { | |
| 1199 me.add_tag(have); // base version | |
| 1200 char buf[200]; | |
| 1201 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1202 me.add_tag(register_string(buf)); // leading / | |
| 1203 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1204 me.add_tag(register_string(buf)); // trailing / | |
| 1205 } | |
| 1206 } | |
| 1207 if (!tsa(tok, token_semi)) return false; | |
| 1208 } | |
| 1209 else if (have == token_host_limit) { | |
| 1210 have = tok.next(); | |
| 1211 if (have == token_on) { | |
| 1212 me.set_host_limit(tok.nextint()); | |
| 1213 me.set_host_message(tok.next()); | |
| 1214 me.set_host_random(false); | |
| 1215 } | |
| 1216 else if (have == token_off) { | |
| 1217 me.set_host_limit(0); | |
| 1218 me.set_host_message(NULL); | |
| 1219 me.set_host_random(false); | |
| 1220 } | |
| 1221 else if (have == token_soft) { | |
| 1222 me.set_host_limit(tok.nextint()); | |
| 1223 me.set_host_message(NULL); | |
| 1224 me.set_host_random(true); | |
| 1225 } | |
| 1226 else { | |
| 1227 tok.token_error("on/off/soft", have); | |
| 1228 return false; | |
| 1229 } | |
| 1230 if (!tsa(tok, token_semi)) return false; | |
| 1231 } | |
| 163 | 1232 else if (have == token_spamassassin) { |
| 1233 me.set_spamassassin_limit(tok.nextint()); | |
| 1234 if (!tsa(tok, token_semi)) return false; | |
| 1235 } | |
| 94 | 1236 else if (have == token_rbrace) { |
| 1237 break; // done | |
| 1238 } | |
| 1239 else { | |
| 1240 tok.token_error("content keyword", have); | |
| 1241 return false; | |
| 1242 } | |
| 1243 } | |
| 1244 return tsa(tok, token_semi); | |
| 1245 } | |
| 1246 | |
| 1247 | |
| 1248 //////////////////////////////////////////////// | |
| 1249 // | |
| 1250 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1251 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1252 if (!tsa(tok, token_lbrace)) return false; | |
| 1253 while (true) { | |
| 1254 char *have = tok.next(); | |
| 1255 if (!have) break; | |
| 1256 if (have == token_rbrace) break; | |
| 1257 if (have == token_semi) { | |
| 1258 // optional separators | |
| 1259 } | |
| 1260 else if (have == token_dccto) { | |
| 1261 char *flavor = tok.next(); | |
| 1262 if (!tsa(tok, token_lbrace)) return false; | |
| 1263 bool keeping = false; | |
| 1264 while (true) { | |
| 1265 char *have = tok.next(); | |
| 1266 if (!have) break; | |
| 1267 if (have == token_rbrace) break; | |
| 1268 if (have == flavor) { | |
| 1269 keeping = true; | |
| 1270 continue; | |
| 1271 } | |
| 1272 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1273 keeping = false; | |
| 1274 continue; | |
| 1275 } | |
| 1276 if (have == token_envto) { | |
| 1277 have = tok.next(); | |
| 1278 if (keeping) { | |
| 1279 if (me.allow_env_to(have)) { | |
| 1280 me.add_to(have); | |
| 1281 dc.add_to(have, &me); | |
| 1282 } | |
| 1283 } | |
| 1284 } | |
| 1285 //else if (have == token_substitute) { | |
| 1286 // if (tok.next() == token_mailhost) { | |
| 1287 // have = tok.next(); | |
| 1288 // if (keeping) { | |
| 1289 // if (me.allow_env_to(have)) { | |
| 1290 // me.add_to(have); | |
| 1291 // dc.add_to(have, &me); | |
| 1292 // } | |
| 1293 // } | |
| 1294 // } | |
| 1295 //} | |
| 1296 tok.skipeol(); | |
| 1297 } | |
| 1298 } | |
| 1299 else if (me.allow_env_to(have)) { | |
| 1300 me.add_to(have); | |
| 1301 dc.add_to(have, &me); | |
| 1302 } | |
| 1303 else { | |
| 1304 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1305 return false; | |
| 1306 } | |
| 1307 } | |
| 1308 return tsa(tok, token_semi); | |
| 1309 } | |
| 1310 | |
| 1311 | |
| 1312 //////////////////////////////////////////////// | |
| 1313 // | |
| 1314 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1315 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1316 char *host = tok.next(); | |
| 1317 if (!tsa(tok, token_semi)) return false; | |
| 1318 me.set_verify(host); | |
| 153 | 1319 me.set_verifier(add_verify_host(host)); |
| 1320 return true; | |
| 1321 } | |
| 1322 | |
| 1323 | |
| 1324 //////////////////////////////////////////////// | |
| 1325 // | |
| 1326 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1327 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1328 int days = tok.nextint(); | |
| 1329 char *fn = tok.next(); | |
| 1330 if (!tsa(tok, token_semi)) return false; | |
| 1331 me.set_autowhite(fn); | |
| 1332 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1333 return true; |
| 94 | 1334 } |
| 1335 | |
| 1336 | |
| 1337 //////////////////////////////////////////////// | |
| 1338 // | |
| 1339 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1340 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1341 char *st = tok.next(); | |
| 1342 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1343 me.set_from_default(st); | |
| 1344 } | |
| 1345 else { | |
| 1346 tok.push(st); | |
| 1347 } | |
| 1348 if (!tsa(tok, token_lbrace)) return false; | |
| 1349 while (true) { | |
| 1350 char *have = tok.next(); | |
| 1351 if (!have) break; | |
| 1352 if (have == token_rbrace) break; | |
| 1353 if (have == token_semi) { | |
| 1354 // optional separators | |
| 1355 } | |
| 1356 else if (have == token_dccfrom) { | |
| 1357 if (!tsa(tok, token_lbrace)) return false; | |
| 1358 bool keeping = false; | |
| 1359 bool many = false; | |
| 1360 while (true) { | |
| 1361 char *have = tok.next(); | |
| 1362 if (!have) break; | |
| 1363 if (have == token_rbrace) break; | |
| 1364 if (have == token_ok) { | |
| 1365 keeping = true; | |
| 1366 many = false; | |
| 1367 continue; | |
| 1368 } | |
| 1369 else if (have == token_many) { | |
| 1370 keeping = true; | |
| 1371 many = true; | |
| 1372 continue; | |
| 1373 } | |
| 1374 else if (have == token_ok2) { | |
| 1375 keeping = false; | |
| 1376 continue; | |
| 1377 } | |
| 1378 if (have == token_envfrom) { | |
| 1379 have = tok.next(); | |
| 1380 if (keeping) { | |
| 1381 me.add_from(have, (many) ? token_black : token_white); | |
| 1382 } | |
| 1383 } | |
| 1384 else if (have == token_substitute) { | |
| 1385 if (tok.next() == token_mailhost) { | |
| 1386 have = tok.next(); | |
| 1387 me.add_from(have, (many) ? token_black : token_white); | |
| 1388 } | |
| 1389 } | |
| 1390 tok.skipeol(); | |
| 1391 } | |
| 1392 } | |
| 1393 else { | |
| 1394 // may be a valid email address or domain name | |
| 1395 char *st = tok.next(); | |
|
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1396 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1397 me.add_from(have, st); |
| 1398 } | |
| 1399 else { | |
| 1400 CONTEXTP con = me.find_from_context_name(st); | |
| 1401 if (con) { | |
| 1402 me.add_from_context(have, con); | |
| 1403 } | |
| 1404 else { | |
|
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1405 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1406 return false; |
| 1407 } | |
| 1408 } | |
| 1409 } | |
| 1410 } | |
| 1411 return tsa(tok, token_semi); | |
| 1412 } | |
| 1413 | |
| 1414 | |
| 1415 //////////////////////////////////////////////// | |
| 1416 // | |
| 136 | 1417 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1418 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1419 char *def = tok.next(); |
| 141 | 1420 tok.push(def); |
| 1421 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1422 if (!tsa(tok, token_lbrace)) return false; |
| 1423 while (true) { | |
| 1424 char *have = tok.next(); | |
| 1425 if (!have) break; | |
| 1426 if (have == token_rbrace) break; | |
| 1427 if (have == token_semi) { | |
| 1428 // optional separators | |
| 1429 } | |
| 1430 else { | |
| 140 | 1431 me.add_rate(have, tok.nextint()); |
| 136 | 1432 } |
| 1433 } | |
| 1434 return tsa(tok, token_semi); | |
| 1435 } | |
| 1436 | |
| 1437 | |
| 1438 //////////////////////////////////////////////// | |
| 1439 // | |
| 94 | 1440 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1441 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1442 char *name = tok.next(); | |
| 1443 if (!tsa(tok, token_lbrace)) return false; | |
| 1444 CONTEXTP con = new CONTEXT(parent, name); | |
| 1445 | |
| 1446 while (true) { | |
| 1447 char *have = tok.next(); | |
| 1448 if (!have) break; | |
| 1449 if (have == token_rbrace) break; // done | |
| 1450 if (have == token_dnsbl) { | |
| 1451 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1452 } | |
| 1453 else if (have == token_dnsbll) { | |
| 1454 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1455 } | |
| 1456 else if (have == token_content) { | |
| 1457 if (!parse_content(tok, dc, *con)) return false; | |
| 1458 } | |
| 1459 else if (have == token_envto) { | |
| 1460 if (!parse_envto(tok, dc, *con)) return false; | |
| 1461 } | |
| 1462 else if (have == token_verify) { | |
| 1463 if (!parse_verify(tok, dc, *con)) return false; | |
| 1464 } | |
| 153 | 1465 else if (have == token_autowhite) { |
| 1466 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1467 } | |
| 94 | 1468 else if (have == token_envfrom) { |
| 1469 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1470 } | |
| 140 | 1471 else if (have == token_rate) { |
| 1472 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1473 if (!parse_rate(tok, dc, *con)) return false; |
| 1474 } | |
| 94 | 1475 else if (have == token_context) { |
| 1476 if (!parse_context(tok, dc, con)) return false; | |
| 1477 } | |
| 1478 else { | |
| 1479 tok.token_error("context keyword", have); | |
| 1480 return false; | |
| 1481 } | |
| 1482 } | |
| 1483 | |
| 1484 if (!tsa(tok, token_semi)) { | |
| 1485 delete con; | |
| 1486 return false; | |
| 1487 } | |
| 1488 dc.add_context(con); | |
| 1489 if (parent) parent->add_context(con); | |
| 1490 return true; | |
| 1491 } | |
| 1492 | |
| 1493 | |
| 1494 //////////////////////////////////////////////// | |
| 1495 // parse a config file | |
| 1496 // | |
| 1497 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1498 int count = 0; |
| 94 | 1499 TOKEN tok(fn, &dc.config_files); |
| 1500 while (true) { | |
| 1501 char *have = tok.next(); | |
| 1502 if (!have) break; | |
| 1503 if (have == token_context) { | |
| 1504 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1505 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1506 return false; |
| 1507 } | |
| 99 | 1508 else count++; |
| 94 | 1509 } |
| 1510 else { | |
| 1511 tok.token_error(token_context, have); | |
| 1512 return false; | |
| 1513 } | |
| 1514 } | |
| 99 | 1515 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1516 return (dc.default_context) ? true : false; |
| 1517 } | |
| 1518 | |
| 1519 | |
| 1520 //////////////////////////////////////////////// | |
| 1521 // init the tokens | |
| 1522 // | |
| 1523 void token_init() { | |
| 163 | 1524 token_autowhite = register_string("autowhite"); |
| 1525 token_black = register_string("black"); | |
| 1526 token_cctld = register_string("cctld"); | |
| 1527 token_content = register_string("content"); | |
| 1528 token_context = register_string("context"); | |
| 1529 token_dccfrom = register_string("dcc_from"); | |
| 1530 token_dccto = register_string("dcc_to"); | |
| 1531 token_default = register_string("default"); | |
| 1532 token_dnsbl = register_string("dnsbl"); | |
| 1533 token_dnsbll = register_string("dnsbl_list"); | |
| 1534 token_envfrom = register_string("env_from"); | |
| 1535 token_envto = register_string("env_to"); | |
| 1536 token_filter = register_string("filter"); | |
| 1537 token_host_limit = register_string("host_limit"); | |
| 1538 token_html_limit = register_string("html_limit"); | |
| 1539 token_html_tags = register_string("html_tags"); | |
| 1540 token_ignore = register_string("ignore"); | |
| 1541 token_include = register_string("include"); | |
| 1542 token_inherit = register_string("inherit"); | |
| 1543 token_lbrace = register_string("{"); | |
| 1544 token_mailhost = register_string("mail_host"); | |
| 1545 token_many = register_string("many"); | |
| 1546 token_off = register_string("off"); | |
| 1547 token_ok = register_string("ok"); | |
| 1548 token_ok2 = register_string("ok2"); | |
| 1549 token_on = register_string("on"); | |
| 1550 token_rate = register_string("rate_limit"); | |
| 1551 token_rbrace = register_string("}"); | |
| 1552 token_semi = register_string(";"); | |
| 1553 token_soft = register_string("soft"); | |
| 1554 token_spamassassin = register_string("spamassassin"); | |
| 1555 token_substitute = register_string("substitute"); | |
| 1556 token_tld = register_string("tld"); | |
| 1557 token_unknown = register_string("unknown"); | |
| 1558 token_uribl = register_string("uribl"); | |
| 1559 token_verify = register_string("verify"); | |
| 1560 token_white = register_string("white"); | |
| 94 | 1561 |
| 1562 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1563 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1564 } | |
| 1565 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1566 token_myhostname = register_string(myhostname); | |
| 1567 } |