Mercurial > dnsbl
annotate src/context.cpp @ 168:6bac960af6b4
add generic reverse dns filtering regex
| author | carl |
|---|---|
| date | Thu, 30 Aug 2007 11:08:46 -0700 |
| parents | 9b129ed78d7d |
| children | bd33eaccfed8 |
| 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; | |
| 168 | 36 char *token_generic; |
| 94 | 37 char *token_host_limit; |
| 38 char *token_html_limit; | |
| 39 char *token_html_tags; | |
| 40 char *token_ignore; | |
| 41 char *token_include; | |
| 42 char *token_inherit; | |
| 43 char *token_lbrace; | |
| 44 char *token_mailhost; | |
| 45 char *token_many; | |
| 46 char *token_off; | |
| 47 char *token_ok2; | |
| 48 char *token_ok; | |
| 49 char *token_on; | |
| 136 | 50 char *token_rate; |
| 94 | 51 char *token_rbrace; |
| 52 char *token_semi; | |
| 53 char *token_soft; | |
| 163 | 54 char *token_spamassassin; |
| 94 | 55 char *token_substitute; |
| 56 char *token_tld; | |
| 117 | 57 char *token_cctld; |
| 94 | 58 char *token_unknown; |
| 119 | 59 char *token_uribl; |
| 94 | 60 char *token_verify; |
| 61 char *token_white; | |
| 62 | |
| 63 char *token_myhostname; | |
|
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64 #ifndef HOST_NAME_MAX |
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65 #define HOST_NAME_MAX 255 |
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66 #endif |
| 94 | 67 char myhostname[HOST_NAME_MAX+1]; |
| 68 | |
| 153 | 69 pthread_mutex_t verifier_mutex; // protect the verifier map |
| 94 | 70 verify_map verifiers; |
| 153 | 71 |
| 72 pthread_mutex_t whitelister_mutex; // protect the | |
| 73 whitelister_map whitelisters; | |
| 74 | |
| 94 | 75 string_set all_strings; // owns all the strings, only modified by the config loader thread |
| 76 const int maxlen = 1000; // used for snprintf buffers | |
| 153 | 77 const int maxsmtp_age = 120;// smtp verify sockets older than this are ancient |
| 78 const int maxauto_age = 600;// auto whitelister delay before flushing to file | |
| 94 | 79 extern int NULL_SOCKET; |
|
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80 const time_t ERROR_SMTP_SOCKET_TIME = 600; // number of seconds between attempts to open a socket to an smtp server |
| 94 | 81 |
| 82 | |
| 83 int SMTP::writer() { | |
| 84 #ifdef VERIFY_DEBUG | |
| 85 log("writer() sees buffer with %s", buffer); | |
| 86 log("writer() sees error %d", (int)error); | |
| 87 #endif | |
| 88 int rs = 0; | |
| 89 if (!error) { | |
| 90 int len = strlen(buffer); | |
| 91 while (rs < len) { | |
| 92 int ws = write(fd, buffer+rs, len-rs); | |
| 93 if (ws > 0) { | |
| 94 rs += ws; | |
| 95 } | |
| 96 else { | |
| 97 // peer closed the socket! | |
| 98 rs = 0; | |
| 99 error = true; | |
| 100 break; | |
| 101 } | |
| 102 } | |
| 103 } | |
| 104 return rs; | |
| 105 } | |
| 106 | |
| 107 | |
| 108 int SMTP::reader() { | |
| 109 // read some bytes terminated by lf or end of buffer. | |
| 110 // we may have a multi line response or part thereof in the buffer. | |
| 111 #ifdef VERIFY_DEBUG | |
| 112 log("reader() sees error %d", (int)error); | |
| 113 #endif | |
| 114 if (error) return 0; | |
| 115 int len = maxlen-1; // room for null terminator | |
| 116 while (pending < len) { | |
| 117 int ws = read(fd, buffer+pending, len-pending); | |
| 118 if (ws > 0) { | |
| 119 pending += ws; | |
| 120 if (buffer[pending-1] == '\n') break; | |
| 121 } | |
| 122 else { | |
| 123 // peer closed the socket! | |
| 124 pending = 0; | |
| 125 error = true; | |
| 126 break; | |
| 127 } | |
| 128 } | |
| 129 buffer[pending] = '\0'; | |
| 130 #ifdef VERIFY_DEBUG | |
| 131 log("reader() sees buffer with %s", buffer); | |
| 132 #endif | |
| 133 return pending; | |
| 134 } | |
| 135 | |
| 136 | |
| 137 int SMTP::read_line() { | |
| 138 char *lf = strchr(buffer, '\n'); | |
| 139 if (!lf) { | |
| 140 reader(); // get a lf | |
| 141 lf = strchr(buffer, '\n'); | |
| 142 if (!lf) lf = buffer + pending - 1; | |
| 143 } | |
| 144 return (lf-buffer)+1; // number of bytes in this line | |
| 145 } | |
| 146 | |
| 147 | |
| 97 | 148 void SMTP::flush_line(int r) { |
| 94 | 149 if (pending > r) memmove(buffer, buffer+r, pending-r); |
| 150 pending -= r; | |
| 151 } | |
| 152 | |
| 153 | |
| 154 int SMTP::read_response() { | |
| 155 pending = 0; | |
| 156 buffer[pending] = '\0'; | |
| 157 while (true) { | |
| 158 int r = read_line(); | |
| 159 #ifdef VERIFY_DEBUG | |
| 160 log("read_response() sees line with %s", buffer); | |
| 161 log("read_response() sees line length %d", r); | |
| 162 #endif | |
| 163 if (r == 0) return 0; // failed to read any bytes | |
| 164 if ((r > 4) && (buffer[3] == '-')) { | |
| 165 flush_line(r); | |
| 166 continue; | |
| 167 } | |
| 168 return atoi(buffer); | |
| 169 } | |
| 170 return 0; | |
| 171 } | |
| 172 | |
| 173 | |
| 174 int SMTP::cmd(char *c) { | |
| 175 if (c) { | |
| 176 init(); | |
| 177 append(c); | |
| 178 } | |
| 179 append("\r\n"); | |
| 180 writer(); | |
| 181 return read_response(); | |
| 182 } | |
| 183 | |
| 184 | |
| 185 int SMTP::helo() { | |
| 186 if (read_response() != 220) return 0; | |
| 187 init(); | |
| 188 append("HELO "); | |
| 189 append(token_myhostname); | |
| 190 return cmd(NULL); | |
| 191 } | |
| 192 | |
| 193 | |
| 194 int SMTP::rset() { | |
| 195 int rc = cmd("RSET"); | |
| 196 efrom[0] = '\0'; | |
| 197 return rc; | |
| 198 } | |
| 199 | |
| 200 | |
| 201 int SMTP::from(char *f) { | |
| 101 | 202 // the mail from address was originally passed in from sendmail enclosed in |
| 203 // <>. to_lower_string() removed the <> and converted the rest to lowercase, | |
| 204 // except in the case of an empty return path, which was left as the two | |
| 205 // character string <>. | |
| 94 | 206 if (strncmp(efrom, f, maxlen)) { |
| 207 rset(); | |
| 208 strncpy(efrom, f, maxlen); | |
| 209 init(); | |
| 210 append("MAIL FROM:<"); | |
| 101 | 211 if (*f != '<') append(f); |
| 94 | 212 append(">"); |
| 213 return cmd(NULL); | |
| 214 } | |
| 215 return 250; // pretend it worked | |
| 216 } | |
| 217 | |
| 218 | |
| 219 int SMTP::rcpt(char *t) { | |
| 220 init(); | |
| 221 append("RCPT TO:<"); | |
| 222 append(t); | |
| 223 append(">"); | |
| 224 return cmd(NULL); | |
| 225 } | |
| 226 | |
| 227 | |
| 228 int SMTP::quit() { | |
| 229 return cmd("QUIT"); | |
| 230 } | |
| 231 | |
| 232 | |
| 233 void SMTP::closefd() { | |
| 234 shutdown(fd, SHUT_RDWR); | |
| 235 close(fd); | |
| 236 } | |
| 237 | |
| 238 | |
| 239 #ifdef VERIFY_DEBUG | |
| 240 void SMTP::log(char *m, int v) { | |
| 241 char buf[maxlen]; | |
| 242 snprintf(buf, maxlen, m, v); | |
| 243 my_syslog(buf); | |
| 244 } | |
| 245 | |
| 246 | |
| 247 void SMTP::log(char *m, char *v) { | |
| 248 char buf[maxlen]; | |
| 249 snprintf(buf, maxlen, m, v); | |
| 250 my_syslog(buf); | |
| 251 } | |
| 252 #endif | |
| 253 | |
| 254 | |
| 153 | 255 //////////////////////////////////////////////// |
| 256 // smtp verifier so backup mx machines can see the valid users | |
| 257 // | |
| 94 | 258 VERIFY::VERIFY(char *h) { |
| 259 host = h; | |
| 260 last_err = 0; | |
| 261 pthread_mutex_init(&mutex, 0); | |
| 262 } | |
| 263 | |
| 264 | |
| 265 void VERIFY::closer() { | |
| 266 bool ok = true; | |
| 267 while (ok) { | |
| 268 SMTP *conn = NULL; | |
| 269 pthread_mutex_lock(&mutex); | |
| 270 if (connections.empty()) { | |
| 271 ok = false; | |
| 272 } | |
| 273 else { | |
| 274 conn = connections.front(); | |
| 275 time_t now = time(NULL); | |
| 153 | 276 if ((now - conn->get_stamp()) > maxsmtp_age) { |
| 94 | 277 // this connection is ancient, remove it |
| 278 connections.pop_front(); | |
| 279 } | |
| 280 else { | |
| 281 ok = false; | |
| 282 conn = NULL; | |
| 283 } | |
| 284 } | |
| 285 pthread_mutex_unlock(&mutex); | |
| 286 // avoid doing this work inside the mutex lock | |
| 287 if (conn) { | |
| 288 #ifdef VERIFY_DEBUG | |
| 289 conn->log("closer() closes ancient %d", conn->get_fd()); | |
| 290 #endif | |
| 291 delete conn; | |
| 292 } | |
| 293 } | |
| 294 } | |
| 295 | |
| 296 | |
| 297 SMTP* VERIFY::get_connection() { | |
| 298 SMTP *conn = NULL; | |
| 299 pthread_mutex_lock(&mutex); | |
| 300 if (!connections.empty()) { | |
| 301 conn = connections.front(); | |
| 302 connections.pop_front(); | |
| 303 #ifdef VERIFY_DEBUG | |
| 304 conn->log("get_connection() %d from cache", conn->get_fd()); | |
| 305 #endif | |
| 306 } | |
| 307 pthread_mutex_unlock(&mutex); | |
| 308 if (conn) return conn; | |
| 309 int sock = NULL_SOCKET; | |
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310 if ((time(NULL) - last_err) > ERROR_SMTP_SOCKET_TIME) { |
| 94 | 311 // nothing recent, maybe this time it will work |
| 312 hostent *h = gethostbyname(host); | |
| 313 if (h) { | |
| 314 sockaddr_in server; | |
| 315 server.sin_family = h->h_addrtype; | |
| 316 server.sin_port = htons(25); | |
| 317 memcpy(&server.sin_addr, h->h_addr_list[0], h->h_length); | |
| 318 sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 319 if (sock != NULL_SOCKET) { | |
| 320 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0); | |
| 321 if (!rc) { | |
| 322 shutdown(sock, SHUT_RDWR); | |
| 323 close(sock); | |
| 324 sock = NULL_SOCKET; | |
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325 last_err = time(NULL); |
| 94 | 326 } |
| 327 } | |
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328 else last_err = time(NULL); |
| 94 | 329 } |
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330 else last_err = time(NULL); |
| 94 | 331 } |
| 332 if (sock != NULL_SOCKET) { | |
| 333 conn = new SMTP(sock); | |
| 334 #ifdef VERIFY_DEBUG | |
| 335 conn->log("get_connection() %d new socket", conn->get_fd()); | |
| 336 #endif | |
| 337 if (conn->helo() == 250) return conn; | |
| 338 delete conn; | |
| 339 } | |
| 340 return NULL; | |
| 341 } | |
| 342 | |
| 343 | |
| 344 void VERIFY::put_connection(SMTP *conn) { | |
| 345 if (conn->err()) { | |
| 346 #ifdef VERIFY_DEBUG | |
| 347 conn->log("put_socket() %d with error, close it", conn->get_fd()); | |
| 348 #endif | |
| 349 delete conn; | |
| 350 last_err = time(NULL); | |
| 351 } | |
| 352 else { | |
| 353 #ifdef VERIFY_DEBUG | |
| 354 conn->log("put_socket() %d", conn->get_fd()); | |
| 355 #endif | |
| 356 conn->now(); | |
| 357 pthread_mutex_lock(&mutex); | |
| 358 connections.push_back(conn); | |
| 359 pthread_mutex_unlock(&mutex); | |
| 360 } | |
| 361 } | |
| 362 | |
| 363 | |
| 364 bool VERIFY::ok(char *from, char *to) { | |
| 365 if (host == token_myhostname) return true; | |
| 366 SMTP *conn = get_connection(); | |
| 367 if (!conn) return true; // cannot verify right now, we have socket errors | |
| 368 int rc; | |
| 369 rc = conn->from(from); | |
| 370 #ifdef VERIFY_DEBUG | |
| 371 conn->log("verify::ok() from sees %d", rc); | |
| 372 #endif | |
| 373 if (rc != 250) { | |
| 374 conn->rset(); | |
| 375 put_connection(conn); | |
| 376 return (rc >= 500) ? false : true; | |
| 377 } | |
| 378 rc = conn->rcpt(to); | |
| 379 #ifdef VERIFY_DEBUG | |
| 380 conn->log("verify::ok() rcpt sees %d", rc); | |
| 381 #endif | |
| 382 put_connection(conn); | |
| 383 return (rc >= 500) ? false : true; | |
| 384 } | |
| 385 | |
| 386 | |
| 153 | 387 //////////////////////////////////////////////// |
| 388 // setup a new smtp verify host | |
| 389 // | |
| 390 VERIFYP add_verify_host(char *host); | |
| 391 VERIFYP add_verify_host(char *host) { | |
| 392 VERIFYP rc = NULL; | |
| 393 pthread_mutex_lock(&verifier_mutex); | |
| 394 verify_map::iterator i = verifiers.find(host); | |
| 395 if (i == verifiers.end()) { | |
| 396 rc = new VERIFY(host); | |
| 397 verifiers[host] = rc; | |
| 398 } | |
| 399 else rc = (*i).second; | |
| 400 pthread_mutex_unlock(&verifier_mutex); | |
| 401 return rc; | |
| 402 } | |
| 403 | |
| 404 | |
| 405 //////////////////////////////////////////////// | |
| 406 // thread to check for verify hosts with old sockets that we can close | |
| 407 // | |
| 408 void* verify_closer(void *arg) { | |
| 409 while (true) { | |
| 410 sleep(maxsmtp_age); | |
| 411 pthread_mutex_lock(&verifier_mutex); | |
| 412 for (verify_map::iterator i=verifiers.begin(); i!=verifiers.end(); i++) { | |
| 413 VERIFYP v = (*i).second; | |
| 414 v->closer(); | |
| 415 } | |
| 416 pthread_mutex_unlock(&verifier_mutex); | |
| 417 } | |
| 418 return NULL; | |
| 419 } | |
| 420 | |
| 421 | |
| 422 //////////////////////////////////////////////// | |
| 423 // automatic whitelister | |
| 424 // | |
| 425 WHITELISTER::WHITELISTER(char *f, int d) { | |
| 426 fn = f; | |
| 427 days = d; | |
| 428 pthread_mutex_init(&mutex, 0); | |
| 429 need = false; | |
| 160 | 430 loaded = time(NULL); |
| 431 merge(); | |
| 432 } | |
| 433 | |
| 434 | |
| 435 void WHITELISTER::merge() { | |
| 436 time_t now = time(NULL); | |
| 154 | 437 ifstream ifs; |
| 438 ifs.open(fn); | |
| 439 if (!ifs.fail()) { | |
| 440 const int maxlen = 1000; | |
| 441 char buf[maxlen]; | |
| 442 while (ifs.getline(buf, maxlen)) { | |
| 443 char *p = strchr(buf, ' '); | |
| 444 if (p) { | |
| 445 *p = '\0'; | |
| 160 | 446 char *who = strdup(buf); |
| 447 time_t when = atoi(p+1); | |
| 448 if ((when == 0) || (when > now)) when = now; | |
| 449 autowhite_sent::iterator i = rcpts.find(who); | |
| 450 if (i != rcpts.end()) { | |
| 451 time_t wh = (*i).second; | |
| 452 if (when > wh) rcpts[who] = when; | |
| 453 } | |
| 454 else { | |
| 455 rcpts[who] = when; | |
| 456 } | |
| 154 | 457 } |
| 458 } | |
| 459 } | |
| 460 ifs.close(); | |
| 153 | 461 } |
| 462 | |
| 463 | |
| 464 void WHITELISTER::writer() { | |
| 465 pthread_mutex_lock(&mutex); | |
| 466 time_t limit = time(NULL) - days*86400; | |
| 160 | 467 |
| 468 // check for manually modified autowhitelist file | |
| 469 struct stat st; | |
| 470 if (stat(fn, &st)) need = true; // file has disappeared | |
| 471 else if (st.st_mtime > loaded) { | |
| 472 // file has been manually updated, merge new entries | |
| 473 merge(); | |
| 474 need = true; | |
| 475 } | |
| 476 | |
| 477 // purge old entries | |
| 153 | 478 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end();) { |
| 479 time_t when = (*i).second; | |
| 480 if (when < limit) { | |
| 154 | 481 char *who = (*i).first; |
| 482 free(who); | |
| 153 | 483 autowhite_sent::iterator j = i; |
| 484 j++; | |
| 485 rcpts.erase(i); | |
| 486 i = j; | |
| 487 need = true; | |
| 488 } | |
| 489 else i++; | |
| 490 } | |
| 160 | 491 |
| 153 | 492 if (need) { |
| 493 // dump the file | |
| 154 | 494 ofstream ofs; |
| 495 ofs.open(fn); | |
| 496 if (!ofs.fail()) { | |
| 153 | 497 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end(); i++) { |
| 498 char *who = (*i).first; | |
| 499 int when = (*i).second; | |
| 154 | 500 ofs << who << " " << when << endl; |
| 153 | 501 } |
| 502 } | |
| 154 | 503 ofs.close(); |
| 156 | 504 need = false; |
| 160 | 505 loaded = time(NULL); // update load time |
| 153 | 506 } |
| 507 pthread_mutex_unlock(&mutex); | |
| 508 } | |
| 509 | |
| 510 | |
| 511 void WHITELISTER::sent(char *to) { | |
| 154 | 512 // we take ownership of the string |
| 153 | 513 pthread_mutex_lock(&mutex); |
| 514 need = true; | |
| 515 rcpts[to] = time(NULL); | |
| 516 pthread_mutex_unlock(&mutex); | |
| 517 } | |
| 518 | |
| 519 | |
| 520 bool WHITELISTER::is_white(char *from) { | |
| 521 pthread_mutex_lock(&mutex); | |
| 522 autowhite_sent::iterator i = rcpts.find(from); | |
| 162 | 523 bool rc = (i != rcpts.end()); |
| 153 | 524 pthread_mutex_unlock(&mutex); |
| 525 return rc; | |
| 526 } | |
| 527 | |
| 528 | |
| 529 //////////////////////////////////////////////// | |
| 530 // setup a new auto whitelister file | |
| 531 // | |
| 532 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 533 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 534 WHITELISTERP rc = NULL; | |
| 535 pthread_mutex_lock(&whitelister_mutex); | |
| 536 whitelister_map::iterator i = whitelisters.find(fn); | |
| 537 if (i == whitelisters.end()) { | |
| 538 rc = new WHITELISTER(fn, days); | |
| 539 whitelisters[fn] = rc; | |
| 540 } | |
| 156 | 541 else { |
| 542 rc = (*i).second; | |
| 543 rc->set_days(days); | |
| 544 } | |
| 153 | 545 pthread_mutex_unlock(&whitelister_mutex); |
| 546 return rc; | |
| 547 } | |
| 548 | |
| 549 | |
| 550 //////////////////////////////////////////////// | |
| 551 // thread to check for whitelister hosts with old sockets that we can close | |
| 552 // | |
| 553 void* whitelister_writer(void *arg) { | |
| 554 while (true) { | |
| 555 sleep(maxauto_age); | |
| 556 pthread_mutex_lock(&whitelister_mutex); | |
| 557 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 558 WHITELISTERP v = (*i).second; | |
| 559 v->writer(); | |
| 560 } | |
| 561 pthread_mutex_unlock(&whitelister_mutex); | |
| 562 } | |
| 563 return NULL; | |
| 564 } | |
| 565 | |
| 566 | |
| 94 | 567 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 568 name = n; | |
| 569 suffix = s; | |
| 570 message = m; | |
| 571 } | |
| 572 | |
| 573 | |
| 574 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 575 return (strcmp(name, rhs.name) == 0) && | |
| 576 (strcmp(suffix, rhs.suffix) == 0) && | |
| 577 (strcmp(message, rhs.message) == 0); | |
| 578 } | |
| 579 | |
| 580 | |
| 581 CONFIG::CONFIG() { | |
| 582 reference_count = 0; | |
| 583 generation = 0; | |
| 584 load_time = 0; | |
| 585 default_context = NULL; | |
| 586 } | |
| 587 | |
| 588 | |
| 589 CONFIG::~CONFIG() { | |
| 146 | 590 if (debug_syslog) { |
| 591 char buf[maxlen]; | |
| 592 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 593 my_syslog(buf); | |
| 594 } | |
| 94 | 595 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 596 CONTEXT *c = *i; | |
| 597 delete c; | |
| 598 } | |
| 599 } | |
| 600 | |
| 601 | |
| 602 void CONFIG::add_context(CONTEXTP con) { | |
| 603 contexts.push_back(con); | |
| 604 if (!default_context && !con->get_parent()) { | |
| 605 // first global context | |
| 606 default_context = con; | |
| 607 } | |
| 608 } | |
| 609 | |
| 610 | |
| 611 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 612 context_map::iterator i = env_to.find(to); | |
| 613 if (i != env_to.end()) { | |
| 614 CONTEXTP c = (*i).second; | |
| 615 if ((c != con) && (c != con->get_parent())) { | |
| 616 if (debug_syslog) { | |
| 617 char oldname[maxlen]; | |
| 618 char newname[maxlen]; | |
| 619 char *oldn = c->get_full_name(oldname, maxlen); | |
| 620 char *newn = con->get_full_name(newname, maxlen); | |
| 621 char buf[maxlen*3]; | |
| 622 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 623 my_syslog(buf); | |
| 624 } | |
| 625 } | |
| 626 } | |
| 627 env_to[to] = con; | |
| 628 } | |
| 629 | |
| 630 | |
| 631 CONTEXTP CONFIG::find_context(char *to) { | |
| 632 context_map::iterator i = env_to.find(to); | |
| 117 | 633 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 634 char *x = strchr(to, '@'); |
| 635 if (x) { | |
| 636 x++; | |
| 637 i = env_to.find(x); | |
| 117 | 638 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 639 char y = *x; |
| 640 *x = '\0'; | |
| 641 i = env_to.find(to); | |
| 642 *x = y; | |
| 643 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 644 } | |
| 645 return default_context; | |
| 646 } | |
| 647 | |
| 648 | |
| 649 void CONFIG::dump() { | |
|
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650 bool spamass = false; |
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651 if (default_context) default_context->dump(true, spamass); |
| 94 | 652 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 653 CONTEXTP c = *i; | |
| 654 CONTEXTP p = c->get_parent(); | |
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655 if (!p && (c != default_context)) c->dump(false, spamass); |
| 94 | 656 } |
| 657 char buf[maxlen]; | |
| 658 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 659 char *to = (*i).first; | |
| 660 CONTEXTP con = (*i).second; | |
| 661 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 662 } | |
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663 if (spamass && (spamc == spamc_empty)) { |
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664 printf("// *** warning - spamassassin filtering requested, but spamc not found by autoconf.\n"); |
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665 } |
| 94 | 666 } |
| 667 | |
| 668 | |
| 669 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 670 parent = parent_; | |
| 671 name = name_; | |
| 672 verify_host = NULL; | |
| 153 | 673 verifier = NULL; |
| 168 | 674 generic_regx = NULL; |
| 675 generic_message = NULL; | |
| 153 | 676 autowhite_file = NULL; |
| 677 whitelister = NULL; | |
| 94 | 678 env_from_default = (parent) ? token_inherit : token_unknown; |
| 679 content_filtering = (parent) ? parent->content_filtering : false; | |
| 680 content_suffix = NULL; | |
| 681 content_message = NULL; | |
| 119 | 682 uribl_suffix = NULL; |
| 683 uribl_message = NULL; | |
| 94 | 684 host_limit = (parent) ? parent->host_limit : 0; |
| 685 host_limit_message = NULL; | |
| 686 host_random = (parent) ? parent->host_random : false; | |
| 687 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 688 tag_limit_message = NULL; | |
| 163 | 689 spamassassin_limit = (parent) ? parent->spamassassin_limit : 0; |
| 140 | 690 default_rcpt_rate = INT_MAX; |
| 94 | 691 } |
| 692 | |
| 693 | |
| 694 CONTEXT::~CONTEXT() { | |
| 695 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 696 DNSBLP d = (*i).second; | |
| 697 // delete the underlying DNSBL objects. | |
| 698 delete d; | |
| 699 } | |
| 168 | 700 if (generic_regx && strlen(generic_regx)) regfree(&generic_pattern); |
| 94 | 701 } |
| 702 | |
| 703 | |
| 704 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 705 if (p == parent) return true; | |
| 706 if (!parent) return false; | |
| 707 return parent->is_parent(p); | |
| 708 } | |
| 709 | |
| 710 | |
| 711 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 712 if (!parent) return name; | |
| 713 char buf[maxlen]; | |
| 714 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 715 return buffer; | |
| 716 } | |
| 717 | |
| 718 | |
| 168 | 719 bool CONTEXT::set_generic(char *regx, char *msg) |
| 720 { | |
| 721 int rc = 0; | |
| 722 if (generic_regx && strlen(generic_regx)) regfree(&generic_pattern); | |
| 723 generic_regx = regx; | |
| 724 generic_message = msg; | |
| 725 if (generic_regx && strlen(generic_regx)) { | |
| 726 rc = regcomp(&generic_pattern, regx, REG_NOSUB | REG_ICASE | REG_EXTENDED); | |
| 727 } | |
| 728 return rc; // true iff bad pattern | |
| 729 } | |
| 730 | |
| 731 | |
| 732 char *CONTEXT::generic_match(char *client) | |
| 733 { | |
| 734 if (parent && !generic_regx) return parent->generic_match(client); | |
| 735 if (!strlen(generic_regx)) return NULL; | |
| 736 if (0 == regexec(&generic_pattern, client, 0, NULL, 0)) { | |
| 737 return generic_message; | |
| 738 } | |
| 739 return NULL; | |
| 740 } | |
| 741 | |
| 742 | |
| 94 | 743 bool CONTEXT::cover_env_to(char *to) { |
| 744 char buffer[maxlen]; | |
| 745 char *x = strchr(to, '@'); | |
| 746 if (x) x++; | |
| 747 else x = to; | |
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748 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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749 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 750 string_set::iterator i = env_to.find(x); |
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751 if (i != env_to.end()) return true; // we cover the entire domain |
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752 if (x != to) { |
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753 i = env_to.find(to); |
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754 if (i != env_to.end()) return true; // we cover the specific email address |
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755 } |
| 94 | 756 return false; |
| 757 } | |
| 758 | |
| 759 | |
| 760 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 761 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 762 return verifier; | |
| 763 else if (parent) | |
| 764 return parent->find_verify(to); | |
| 765 else | |
| 766 return NULL; | |
| 767 } | |
| 94 | 768 |
| 153 | 769 |
| 162 | 770 WHITELISTERP CONTEXT::find_autowhite(char *from, char *to) { |
| 771 if (whitelister && cover_env_to(to) && !cover_env_to(from)) | |
| 153 | 772 return whitelister; |
| 773 else if (parent) | |
| 162 | 774 return parent->find_autowhite(from, to); |
| 153 | 775 else |
| 776 return NULL; | |
| 94 | 777 } |
| 778 | |
| 779 | |
| 136 | 780 int CONTEXT::find_rate(char *user) { |
| 140 | 781 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 782 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 783 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 784 } |
| 785 | |
| 786 | |
| 94 | 787 char *CONTEXT::find_from(char *from) { |
| 153 | 788 if (whitelister && whitelister->is_white(from)) return token_white; |
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789 char *rc = env_from_default; |
| 94 | 790 string_map::iterator i = env_from.find(from); |
| 117 | 791 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 792 else { |
| 793 char *x = strchr(from, '@'); | |
| 794 if (x) { | |
| 795 x++; | |
| 796 i = env_from.find(x); | |
| 117 | 797 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 798 else { |
| 799 char y = *x; | |
| 800 *x = '\0'; | |
| 801 i = env_from.find(from); | |
| 802 *x = y; | |
| 803 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 804 } | |
| 805 } | |
| 806 } | |
| 807 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 808 return (rc == token_inherit) ? token_unknown : rc; | |
| 809 } | |
| 810 | |
| 811 | |
| 812 CONTEXTP CONTEXT::find_context(char *from) { | |
| 813 context_map::iterator i = env_from_context.find(from); | |
| 117 | 814 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 815 char *x = strchr(from, '@'); |
| 816 if (x) { | |
| 817 x++; | |
| 818 i = env_from_context.find(x); | |
| 117 | 819 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 820 char y = *x; |
| 821 *x = '\0'; | |
| 822 i = env_from_context.find(from); | |
| 823 *x = y; | |
| 824 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 825 } | |
| 826 return this; | |
| 827 } | |
| 828 | |
| 829 | |
| 830 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 831 context_map::iterator i = children.find(name); | |
| 832 if (i != children.end()) return (*i).second; | |
| 833 return NULL; | |
| 834 } | |
| 835 | |
| 836 | |
| 837 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 838 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 839 if (i != dnsbl_names.end()) return (*i).second; | |
| 840 if (parent) return parent->find_dnsbl(name); | |
| 841 return NULL; | |
| 842 } | |
| 843 | |
| 844 | |
| 845 char* CONTEXT::get_content_suffix() { | |
| 846 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 847 return content_suffix; | |
| 848 } | |
| 849 | |
| 850 | |
| 119 | 851 char* CONTEXT::get_uribl_suffix() { |
| 852 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 853 return uribl_suffix; | |
| 854 } | |
| 855 | |
| 856 | |
| 94 | 857 char* CONTEXT::get_content_message() { |
| 858 if (!content_message && parent) return parent->get_content_message(); | |
| 859 return content_message; | |
| 860 } | |
| 861 | |
| 862 | |
| 119 | 863 char* CONTEXT::get_uribl_message() { |
| 864 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 865 return uribl_message; | |
| 866 } | |
| 867 | |
| 868 | |
| 94 | 869 string_set& CONTEXT::get_content_host_ignore() { |
| 870 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 871 return content_host_ignore; | |
| 872 } | |
| 873 | |
| 874 | |
| 117 | 875 string_set& CONTEXT::get_content_cctlds() { |
| 876 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 877 return content_cctlds; | |
| 878 } | |
| 879 | |
| 94 | 880 string_set& CONTEXT::get_content_tlds() { |
| 881 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 882 return content_tlds; | |
| 883 } | |
| 884 | |
| 885 | |
| 886 string_set& CONTEXT::get_html_tags() { | |
| 887 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 888 return html_tags; | |
| 889 } | |
| 890 | |
| 891 | |
| 892 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 893 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 894 return dnsbl_list; | |
| 895 } | |
| 896 | |
| 897 | |
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898 bool CONTEXT::acceptable_content(recorder &memory, int score, string& msg) { |
| 163 | 899 if (spamassassin_limit && (score > spamassassin_limit)) { |
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900 char buf[maxlen]; |
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901 snprintf(buf, sizeof(buf), "Mail rejected - spam assassin score %d", score); |
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902 msg = string(buf); |
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903 return false; |
| 163 | 904 } |
| 94 | 905 if (memory.excessive_bad_tags(tag_limit)) { |
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906 msg = string(tag_limit_message); |
| 94 | 907 return false; |
| 908 } | |
| 909 if (!host_random && memory.excessive_hosts(host_limit)) { | |
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910 msg = string(host_limit_message); |
| 94 | 911 return false; |
| 912 } | |
| 913 return true; | |
| 914 } | |
| 915 | |
| 916 | |
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917 void CONTEXT::dump(bool isdefault, bool &spamass, int level) { |
| 94 | 918 char indent[maxlen]; |
| 919 int i = min(maxlen-1, level*4); | |
| 920 memset(indent, ' ', i); | |
| 921 indent[i] = '\0'; | |
| 922 char buf[maxlen]; | |
| 923 char *fullname = get_full_name(buf,maxlen); | |
| 924 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 925 | |
| 926 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 927 char *n = (*i).first; | |
| 928 DNSBL &d = *(*i).second; | |
| 929 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 930 } | |
| 931 | |
| 145 | 932 dnsblp_list dl = get_dnsbl_list(); |
| 933 if (!dl.empty()) { | |
| 94 | 934 printf("%s dnsbl_list", indent); |
| 145 | 935 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 936 DNSBL &d = *(*i); |
| 937 printf(" %s", d.name); | |
| 938 } | |
| 939 printf("; \n"); | |
| 940 } | |
| 941 | |
| 942 if (content_filtering) { | |
| 943 printf("%s content on { \n", indent, env_from_default); | |
| 944 if (content_suffix) { | |
| 945 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 946 } | |
| 119 | 947 if (uribl_suffix) { |
| 948 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 949 } | |
| 94 | 950 if (!content_host_ignore.empty()) { |
| 951 printf("%s ignore { \n", indent); | |
| 952 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 953 printf("%s %s; \n", indent, *i); | |
| 954 } | |
| 955 printf("%s }; \n", indent); | |
| 956 } | |
| 117 | 957 if (!content_cctlds.empty()) { |
| 958 printf("%s cctld { \n", indent); | |
| 959 printf("%s ", indent); | |
| 960 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 961 printf("%s; ", *i); | |
| 962 } | |
| 963 printf("\n%s }; \n", indent); | |
| 964 } | |
| 94 | 965 if (!content_tlds.empty()) { |
| 966 printf("%s tld { \n", indent); | |
| 967 printf("%s ", indent); | |
| 968 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 969 printf("%s; ", *i); | |
| 970 } | |
| 971 printf("\n%s }; \n", indent); | |
| 972 } | |
| 973 if (!html_tags.empty()) { | |
| 974 printf("%s html_tags { \n", indent); | |
| 975 printf("%s ", indent); | |
| 976 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 977 printf("%s; ", *i); | |
| 978 } | |
| 979 printf("\n%s }; \n", indent); | |
| 980 } | |
| 981 if (host_limit_message) { | |
| 982 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 983 } | |
| 984 else if (host_random) { | |
| 985 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 986 } | |
| 987 else { | |
| 988 printf("%s host_limit off; \n", indent); | |
| 989 } | |
| 990 if (tag_limit_message) { | |
| 991 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 992 } | |
| 993 else { | |
| 994 printf("%s html_limit off; \n", indent); | |
| 995 } | |
| 163 | 996 printf("%s spamassassin %d; \n", indent, spamassassin_limit); |
| 94 | 997 printf("%s }; \n", indent); |
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998 spamass |= (spamassassin_limit != 0); |
| 94 | 999 } |
| 1000 else { | |
| 1001 printf("%s content off {}; \n", indent, env_from_default); | |
| 1002 } | |
| 1003 | |
| 1004 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 1005 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 1006 printf("%s %s; \n", indent, *i); | |
| 1007 } | |
| 1008 printf("%s }; \n", indent); | |
| 1009 | |
| 1010 if (verify_host) { | |
| 1011 printf("%s verify %s; \n", indent, verify_host); | |
| 1012 } | |
| 1013 | |
| 168 | 1014 if (generic_regx) { |
| 1015 printf("%s generic \"%s\" \n", indent, generic_regx); | |
| 1016 printf("%s \"%s\"; \n", indent, generic_message); | |
| 1017 } | |
| 1018 | |
| 153 | 1019 if (autowhite_file && whitelister) { |
| 1020 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 1021 } | |
| 1022 | |
| 94 | 1023 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 1024 CONTEXTP c = (*i).second; | |
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1025 c->dump(false, spamass, level+1); |
| 94 | 1026 } |
| 1027 | |
| 1028 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 1029 if (!env_from.empty()) { | |
| 1030 printf("%s // white/black/unknown \n", indent); | |
| 1031 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 1032 char *f = (*i).first; | |
| 1033 char *t = (*i).second; | |
| 1034 printf("%s %s \t%s; \n", indent, f, t); | |
| 1035 } | |
| 1036 } | |
| 1037 if (!env_from_context.empty()) { | |
| 1038 printf("%s // child contexts \n", indent); | |
| 1039 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 1040 char *f = (*j).first; | |
| 1041 CONTEXTP t = (*j).second; | |
| 1042 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 1043 } | |
| 1044 } | |
| 1045 printf("%s }; \n", indent); | |
| 1046 | |
|
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1047 if (isdefault) { |
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1048 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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1049 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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1050 char *u = (*j).first; |
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1051 int l = (*j).second; |
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1052 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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1053 } |
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1054 printf("%s }; \n", indent); |
| 136 | 1055 } |
| 1056 | |
| 94 | 1057 printf("%s }; \n", indent); |
| 1058 } | |
| 1059 | |
| 1060 | |
| 1061 //////////////////////////////////////////////// | |
| 1062 // helper to discard the strings held by a string_set | |
| 1063 // | |
| 1064 void discard(string_set &s) { | |
| 1065 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 1066 free(*i); | |
| 1067 } | |
| 1068 s.clear(); | |
| 1069 } | |
| 1070 | |
| 1071 | |
| 1072 //////////////////////////////////////////////// | |
| 1073 // helper to register a string in a string set | |
| 1074 // | |
| 1075 char* register_string(string_set &s, char *name) { | |
| 1076 string_set::iterator i = s.find(name); | |
| 1077 if (i != s.end()) return *i; | |
| 1078 char *x = strdup(name); | |
| 1079 s.insert(x); | |
| 1080 return x; | |
| 1081 } | |
| 1082 | |
| 1083 | |
| 1084 //////////////////////////////////////////////// | |
| 1085 // register a global string | |
| 1086 // | |
| 1087 char* register_string(char *name) { | |
| 1088 return register_string(all_strings, name); | |
| 1089 } | |
| 1090 | |
| 1091 | |
| 1092 //////////////////////////////////////////////// | |
| 164 | 1093 // clear all global strings, helper for valgrind checking |
| 1094 // | |
| 1095 void clear_strings() { | |
| 1096 discard(all_strings); | |
| 1097 } | |
| 1098 | |
| 1099 | |
| 1100 //////////////////////////////////////////////// | |
| 94 | 1101 // |
| 1102 bool tsa(TOKEN &tok, char *token); | |
| 1103 bool tsa(TOKEN &tok, char *token) { | |
| 1104 char *have = tok.next(); | |
| 1105 if (have == token) return true; | |
| 1106 tok.token_error(token, have); | |
| 1107 return false; | |
| 1108 } | |
| 1109 | |
| 1110 | |
| 1111 //////////////////////////////////////////////// | |
| 1112 // | |
| 1113 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1114 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1115 char *name = tok.next(); | |
| 1116 char *suf = tok.next(); | |
| 1117 char *msg = tok.next(); | |
| 1118 if (!tsa(tok, token_semi)) return false; | |
| 1119 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1120 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1121 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1122 // duplicate redefinition, ignore it | |
| 1123 delete dnsnew; | |
| 1124 return true; | |
| 1125 } | |
| 1126 me.add_dnsbl(name, dnsnew); | |
| 1127 return true; | |
| 1128 } | |
| 1129 | |
| 1130 | |
| 1131 //////////////////////////////////////////////// | |
| 1132 // | |
| 1133 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1134 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1135 while (true) { | |
| 1136 char *have = tok.next(); | |
| 1137 if (!have) break; | |
| 1138 if (have == token_semi) break; | |
| 1139 DNSBLP dns = me.find_dnsbl(have); | |
| 1140 if (dns) { | |
| 1141 me.add_dnsbl(dns); | |
| 1142 } | |
| 1143 else { | |
| 1144 tok.token_error("dnsbl name", have); | |
| 1145 return false; | |
| 1146 } | |
| 1147 } | |
| 1148 return true; | |
| 1149 } | |
| 1150 | |
| 1151 | |
| 1152 //////////////////////////////////////////////// | |
| 1153 // | |
| 1154 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1155 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1156 char *setting = tok.next(); | |
| 1157 if (setting == token_on) { | |
| 1158 me.set_content_filtering(true); | |
| 1159 } | |
| 1160 else if (setting == token_off) { | |
| 1161 me.set_content_filtering(false); | |
| 1162 } | |
| 1163 else { | |
| 1164 tok.token_error("on/off", setting); | |
| 1165 return false; | |
| 1166 } | |
| 1167 if (!tsa(tok, token_lbrace)) return false; | |
| 1168 while (true) { | |
| 1169 char *have = tok.next(); | |
| 1170 if (!have) break; | |
| 1171 if (have == token_filter) { | |
| 1172 char *suffix = tok.next(); | |
| 1173 char *messag = tok.next(); | |
| 1174 me.set_content_suffix(suffix); | |
| 1175 me.set_content_message(messag); | |
| 1176 if (!tsa(tok, token_semi)) return false; | |
| 1177 } | |
| 119 | 1178 else if (have == token_uribl) { |
| 1179 char *suffix = tok.next(); | |
| 1180 char *messag = tok.next(); | |
| 1181 me.set_uribl_suffix(suffix); | |
| 1182 me.set_uribl_message(messag); | |
| 1183 if (!tsa(tok, token_semi)) return false; | |
| 1184 } | |
| 94 | 1185 else if (have == token_ignore) { |
| 1186 if (!tsa(tok, token_lbrace)) return false; | |
| 1187 while (true) { | |
| 1188 if (!have) break; | |
| 1189 char *have = tok.next(); | |
| 1190 if (have == token_rbrace) break; // done | |
| 1191 me.add_ignore(have); | |
| 1192 } | |
| 1193 if (!tsa(tok, token_semi)) return false; | |
| 1194 } | |
| 117 | 1195 else if (have == token_cctld) { |
| 1196 if (!tsa(tok, token_lbrace)) return false; | |
| 1197 while (true) { | |
| 1198 char *have = tok.next(); | |
| 1199 if (!have) break; | |
| 1200 if (have == token_rbrace) break; // done | |
| 1201 me.add_cctld(have); | |
| 1202 } | |
| 1203 if (!tsa(tok, token_semi)) return false; | |
| 1204 } | |
| 94 | 1205 else if (have == token_tld) { |
| 1206 if (!tsa(tok, token_lbrace)) return false; | |
| 1207 while (true) { | |
| 1208 char *have = tok.next(); | |
| 1209 if (!have) break; | |
| 1210 if (have == token_rbrace) break; // done | |
| 1211 me.add_tld(have); | |
| 1212 } | |
| 1213 if (!tsa(tok, token_semi)) return false; | |
| 1214 } | |
| 1215 else if (have == token_html_limit) { | |
| 1216 have = tok.next(); | |
| 1217 if (have == token_on) { | |
| 1218 me.set_tag_limit(tok.nextint()); | |
| 1219 me.set_tag_message(tok.next()); | |
| 1220 } | |
| 1221 else if (have == token_off) { | |
| 1222 me.set_tag_limit(0); | |
| 1223 me.set_tag_message(NULL); | |
| 1224 } | |
| 1225 else { | |
| 1226 tok.token_error("on/off", have); | |
| 1227 return false; | |
| 1228 } | |
| 1229 if (!tsa(tok, token_semi)) return false; | |
| 1230 } | |
| 1231 else if (have == token_html_tags) { | |
| 1232 if (!tsa(tok, token_lbrace)) return false; | |
| 1233 while (true) { | |
| 1234 char *have = tok.next(); | |
| 1235 if (!have) break; | |
| 1236 if (have == token_rbrace) { | |
| 1237 break; // done | |
| 1238 } | |
| 1239 else { | |
| 1240 me.add_tag(have); // base version | |
| 1241 char buf[200]; | |
| 1242 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1243 me.add_tag(register_string(buf)); // leading / | |
| 1244 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1245 me.add_tag(register_string(buf)); // trailing / | |
| 1246 } | |
| 1247 } | |
| 1248 if (!tsa(tok, token_semi)) return false; | |
| 1249 } | |
| 1250 else if (have == token_host_limit) { | |
| 1251 have = tok.next(); | |
| 1252 if (have == token_on) { | |
| 1253 me.set_host_limit(tok.nextint()); | |
| 1254 me.set_host_message(tok.next()); | |
| 1255 me.set_host_random(false); | |
| 1256 } | |
| 1257 else if (have == token_off) { | |
| 1258 me.set_host_limit(0); | |
| 1259 me.set_host_message(NULL); | |
| 1260 me.set_host_random(false); | |
| 1261 } | |
| 1262 else if (have == token_soft) { | |
| 1263 me.set_host_limit(tok.nextint()); | |
| 1264 me.set_host_message(NULL); | |
| 1265 me.set_host_random(true); | |
| 1266 } | |
| 1267 else { | |
| 1268 tok.token_error("on/off/soft", have); | |
| 1269 return false; | |
| 1270 } | |
| 1271 if (!tsa(tok, token_semi)) return false; | |
| 1272 } | |
| 163 | 1273 else if (have == token_spamassassin) { |
| 1274 me.set_spamassassin_limit(tok.nextint()); | |
| 1275 if (!tsa(tok, token_semi)) return false; | |
| 1276 } | |
| 94 | 1277 else if (have == token_rbrace) { |
| 1278 break; // done | |
| 1279 } | |
| 1280 else { | |
| 1281 tok.token_error("content keyword", have); | |
| 1282 return false; | |
| 1283 } | |
| 1284 } | |
| 1285 return tsa(tok, token_semi); | |
| 1286 } | |
| 1287 | |
| 1288 | |
| 1289 //////////////////////////////////////////////// | |
| 1290 // | |
| 1291 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1292 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1293 if (!tsa(tok, token_lbrace)) return false; | |
| 1294 while (true) { | |
| 1295 char *have = tok.next(); | |
| 1296 if (!have) break; | |
| 1297 if (have == token_rbrace) break; | |
| 1298 if (have == token_semi) { | |
| 1299 // optional separators | |
| 1300 } | |
| 1301 else if (have == token_dccto) { | |
| 1302 char *flavor = tok.next(); | |
| 1303 if (!tsa(tok, token_lbrace)) return false; | |
| 1304 bool keeping = false; | |
| 1305 while (true) { | |
| 1306 char *have = tok.next(); | |
| 1307 if (!have) break; | |
| 1308 if (have == token_rbrace) break; | |
| 1309 if (have == flavor) { | |
| 1310 keeping = true; | |
| 1311 continue; | |
| 1312 } | |
| 1313 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1314 keeping = false; | |
| 1315 continue; | |
| 1316 } | |
| 1317 if (have == token_envto) { | |
| 1318 have = tok.next(); | |
| 1319 if (keeping) { | |
| 1320 if (me.allow_env_to(have)) { | |
| 1321 me.add_to(have); | |
| 1322 dc.add_to(have, &me); | |
| 1323 } | |
| 1324 } | |
| 1325 } | |
| 1326 //else if (have == token_substitute) { | |
| 1327 // if (tok.next() == token_mailhost) { | |
| 1328 // have = tok.next(); | |
| 1329 // if (keeping) { | |
| 1330 // if (me.allow_env_to(have)) { | |
| 1331 // me.add_to(have); | |
| 1332 // dc.add_to(have, &me); | |
| 1333 // } | |
| 1334 // } | |
| 1335 // } | |
| 1336 //} | |
| 1337 tok.skipeol(); | |
| 1338 } | |
| 1339 } | |
| 1340 else if (me.allow_env_to(have)) { | |
| 1341 me.add_to(have); | |
| 1342 dc.add_to(have, &me); | |
| 1343 } | |
| 1344 else { | |
| 1345 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1346 return false; | |
| 1347 } | |
| 1348 } | |
| 1349 return tsa(tok, token_semi); | |
| 1350 } | |
| 1351 | |
| 1352 | |
| 1353 //////////////////////////////////////////////// | |
| 1354 // | |
| 1355 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1356 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1357 char *host = tok.next(); | |
| 1358 if (!tsa(tok, token_semi)) return false; | |
| 1359 me.set_verify(host); | |
| 153 | 1360 me.set_verifier(add_verify_host(host)); |
| 1361 return true; | |
| 1362 } | |
| 1363 | |
| 1364 | |
| 1365 //////////////////////////////////////////////// | |
| 1366 // | |
| 168 | 1367 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1368 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1369 char *regx = tok.next(); | |
| 1370 char *msg = tok.next(); | |
| 1371 if (!tsa(tok, token_semi)) return false; | |
| 1372 if (me.set_generic(regx, msg)) { | |
| 1373 tok.token_error("invalid regular expression %s", regx, regx); | |
| 1374 return false; | |
| 1375 } | |
| 1376 return true; | |
| 1377 } | |
| 1378 | |
| 1379 | |
| 1380 //////////////////////////////////////////////// | |
| 1381 // | |
| 153 | 1382 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1383 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1384 int days = tok.nextint(); | |
| 1385 char *fn = tok.next(); | |
| 1386 if (!tsa(tok, token_semi)) return false; | |
| 1387 me.set_autowhite(fn); | |
| 1388 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1389 return true; |
| 94 | 1390 } |
| 1391 | |
| 1392 | |
| 1393 //////////////////////////////////////////////// | |
| 1394 // | |
| 1395 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1396 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1397 char *st = tok.next(); | |
| 1398 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1399 me.set_from_default(st); | |
| 1400 } | |
| 1401 else { | |
| 1402 tok.push(st); | |
| 1403 } | |
| 1404 if (!tsa(tok, token_lbrace)) return false; | |
| 1405 while (true) { | |
| 1406 char *have = tok.next(); | |
| 1407 if (!have) break; | |
| 1408 if (have == token_rbrace) break; | |
| 1409 if (have == token_semi) { | |
| 1410 // optional separators | |
| 1411 } | |
| 1412 else if (have == token_dccfrom) { | |
| 1413 if (!tsa(tok, token_lbrace)) return false; | |
| 1414 bool keeping = false; | |
| 1415 bool many = false; | |
| 1416 while (true) { | |
| 1417 char *have = tok.next(); | |
| 1418 if (!have) break; | |
| 1419 if (have == token_rbrace) break; | |
| 1420 if (have == token_ok) { | |
| 1421 keeping = true; | |
| 1422 many = false; | |
| 1423 continue; | |
| 1424 } | |
| 1425 else if (have == token_many) { | |
| 1426 keeping = true; | |
| 1427 many = true; | |
| 1428 continue; | |
| 1429 } | |
| 1430 else if (have == token_ok2) { | |
| 1431 keeping = false; | |
| 1432 continue; | |
| 1433 } | |
| 1434 if (have == token_envfrom) { | |
| 1435 have = tok.next(); | |
| 1436 if (keeping) { | |
| 1437 me.add_from(have, (many) ? token_black : token_white); | |
| 1438 } | |
| 1439 } | |
| 1440 else if (have == token_substitute) { | |
| 1441 if (tok.next() == token_mailhost) { | |
| 1442 have = tok.next(); | |
| 1443 me.add_from(have, (many) ? token_black : token_white); | |
| 1444 } | |
| 1445 } | |
| 1446 tok.skipeol(); | |
| 1447 } | |
| 1448 } | |
| 1449 else { | |
| 1450 // may be a valid email address or domain name | |
| 1451 char *st = tok.next(); | |
|
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1452 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1453 me.add_from(have, st); |
| 1454 } | |
| 1455 else { | |
| 1456 CONTEXTP con = me.find_from_context_name(st); | |
| 1457 if (con) { | |
| 1458 me.add_from_context(have, con); | |
| 1459 } | |
| 1460 else { | |
|
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1461 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1462 return false; |
| 1463 } | |
| 1464 } | |
| 1465 } | |
| 1466 } | |
| 1467 return tsa(tok, token_semi); | |
| 1468 } | |
| 1469 | |
| 1470 | |
| 1471 //////////////////////////////////////////////// | |
| 1472 // | |
| 136 | 1473 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1474 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1475 char *def = tok.next(); |
| 141 | 1476 tok.push(def); |
| 1477 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1478 if (!tsa(tok, token_lbrace)) return false; |
| 1479 while (true) { | |
| 1480 char *have = tok.next(); | |
| 1481 if (!have) break; | |
| 1482 if (have == token_rbrace) break; | |
| 1483 if (have == token_semi) { | |
| 1484 // optional separators | |
| 1485 } | |
| 1486 else { | |
| 140 | 1487 me.add_rate(have, tok.nextint()); |
| 136 | 1488 } |
| 1489 } | |
| 1490 return tsa(tok, token_semi); | |
| 1491 } | |
| 1492 | |
| 1493 | |
| 1494 //////////////////////////////////////////////// | |
| 1495 // | |
| 94 | 1496 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1497 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1498 char *name = tok.next(); | |
| 1499 if (!tsa(tok, token_lbrace)) return false; | |
| 1500 CONTEXTP con = new CONTEXT(parent, name); | |
| 1501 | |
| 1502 while (true) { | |
| 1503 char *have = tok.next(); | |
| 1504 if (!have) break; | |
| 1505 if (have == token_rbrace) break; // done | |
| 1506 if (have == token_dnsbl) { | |
| 1507 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1508 } | |
| 1509 else if (have == token_dnsbll) { | |
| 1510 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1511 } | |
| 1512 else if (have == token_content) { | |
| 1513 if (!parse_content(tok, dc, *con)) return false; | |
| 1514 } | |
| 1515 else if (have == token_envto) { | |
| 1516 if (!parse_envto(tok, dc, *con)) return false; | |
| 1517 } | |
| 1518 else if (have == token_verify) { | |
| 1519 if (!parse_verify(tok, dc, *con)) return false; | |
| 1520 } | |
| 168 | 1521 else if (have == token_generic) { |
| 1522 if (!parse_generic(tok, dc, *con)) return false; | |
| 1523 } | |
| 153 | 1524 else if (have == token_autowhite) { |
| 1525 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1526 } | |
| 94 | 1527 else if (have == token_envfrom) { |
| 1528 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1529 } | |
| 140 | 1530 else if (have == token_rate) { |
| 1531 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1532 if (!parse_rate(tok, dc, *con)) return false; |
| 1533 } | |
| 94 | 1534 else if (have == token_context) { |
| 1535 if (!parse_context(tok, dc, con)) return false; | |
| 1536 } | |
| 1537 else { | |
| 1538 tok.token_error("context keyword", have); | |
| 1539 return false; | |
| 1540 } | |
| 1541 } | |
| 1542 | |
| 1543 if (!tsa(tok, token_semi)) { | |
| 1544 delete con; | |
| 1545 return false; | |
| 1546 } | |
| 1547 dc.add_context(con); | |
| 1548 if (parent) parent->add_context(con); | |
| 1549 return true; | |
| 1550 } | |
| 1551 | |
| 1552 | |
| 1553 //////////////////////////////////////////////// | |
| 1554 // parse a config file | |
| 1555 // | |
| 1556 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1557 int count = 0; |
| 94 | 1558 TOKEN tok(fn, &dc.config_files); |
| 1559 while (true) { | |
| 1560 char *have = tok.next(); | |
| 1561 if (!have) break; | |
| 1562 if (have == token_context) { | |
| 1563 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1564 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1565 return false; |
| 1566 } | |
| 99 | 1567 else count++; |
| 94 | 1568 } |
| 1569 else { | |
| 1570 tok.token_error(token_context, have); | |
| 1571 return false; | |
| 1572 } | |
| 1573 } | |
| 99 | 1574 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1575 return (dc.default_context) ? true : false; |
| 1576 } | |
| 1577 | |
| 1578 | |
| 1579 //////////////////////////////////////////////// | |
| 1580 // init the tokens | |
| 1581 // | |
| 1582 void token_init() { | |
| 163 | 1583 token_autowhite = register_string("autowhite"); |
| 1584 token_black = register_string("black"); | |
| 1585 token_cctld = register_string("cctld"); | |
| 1586 token_content = register_string("content"); | |
| 1587 token_context = register_string("context"); | |
| 1588 token_dccfrom = register_string("dcc_from"); | |
| 1589 token_dccto = register_string("dcc_to"); | |
| 1590 token_default = register_string("default"); | |
| 1591 token_dnsbl = register_string("dnsbl"); | |
| 1592 token_dnsbll = register_string("dnsbl_list"); | |
| 1593 token_envfrom = register_string("env_from"); | |
| 1594 token_envto = register_string("env_to"); | |
| 1595 token_filter = register_string("filter"); | |
| 168 | 1596 token_generic = register_string("generic"); |
| 163 | 1597 token_host_limit = register_string("host_limit"); |
| 1598 token_html_limit = register_string("html_limit"); | |
| 1599 token_html_tags = register_string("html_tags"); | |
| 1600 token_ignore = register_string("ignore"); | |
| 1601 token_include = register_string("include"); | |
| 1602 token_inherit = register_string("inherit"); | |
| 1603 token_lbrace = register_string("{"); | |
| 1604 token_mailhost = register_string("mail_host"); | |
| 1605 token_many = register_string("many"); | |
| 1606 token_off = register_string("off"); | |
| 1607 token_ok = register_string("ok"); | |
| 1608 token_ok2 = register_string("ok2"); | |
| 1609 token_on = register_string("on"); | |
| 1610 token_rate = register_string("rate_limit"); | |
| 1611 token_rbrace = register_string("}"); | |
| 1612 token_semi = register_string(";"); | |
| 1613 token_soft = register_string("soft"); | |
| 1614 token_spamassassin = register_string("spamassassin"); | |
| 1615 token_substitute = register_string("substitute"); | |
| 1616 token_tld = register_string("tld"); | |
| 1617 token_unknown = register_string("unknown"); | |
| 1618 token_uribl = register_string("uribl"); | |
| 1619 token_verify = register_string("verify"); | |
| 1620 token_white = register_string("white"); | |
| 94 | 1621 |
| 1622 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1623 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1624 } | |
| 1625 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1626 token_myhostname = register_string(myhostname); | |
| 1627 } |