Mercurial > dnsbl
annotate src/context.cpp @ 167:9b129ed78d7d stable-6-0-6
actually use spamassassin result, allow build without spam assassin, only call it if some recipient needs it.
| author | carl |
|---|---|
| date | Mon, 27 Aug 2007 20:49:19 -0700 |
| parents | 5809bcdc325b |
| children | 6bac960af6b4 |
| 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 bool spamass = false; |
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650 if (default_context) default_context->dump(true, spamass); |
| 94 | 651 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 652 CONTEXTP c = *i; | |
| 653 CONTEXTP p = c->get_parent(); | |
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654 if (!p && (c != default_context)) c->dump(false, spamass); |
| 94 | 655 } |
| 656 char buf[maxlen]; | |
| 657 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 658 char *to = (*i).first; | |
| 659 CONTEXTP con = (*i).second; | |
| 660 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 661 } | |
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662 if (spamass && (spamc == spamc_empty)) { |
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663 printf("// *** warning - spamassassin filtering requested, but spamc not found by autoconf.\n"); |
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664 } |
| 94 | 665 } |
| 666 | |
| 667 | |
| 668 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 669 parent = parent_; | |
| 670 name = name_; | |
| 671 verify_host = NULL; | |
| 153 | 672 verifier = NULL; |
| 673 autowhite_file = NULL; | |
| 674 whitelister = NULL; | |
| 94 | 675 env_from_default = (parent) ? token_inherit : token_unknown; |
| 676 content_filtering = (parent) ? parent->content_filtering : false; | |
| 677 content_suffix = NULL; | |
| 678 content_message = NULL; | |
| 119 | 679 uribl_suffix = NULL; |
| 680 uribl_message = NULL; | |
| 94 | 681 host_limit = (parent) ? parent->host_limit : 0; |
| 682 host_limit_message = NULL; | |
| 683 host_random = (parent) ? parent->host_random : false; | |
| 684 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 685 tag_limit_message = NULL; | |
| 163 | 686 spamassassin_limit = (parent) ? parent->spamassassin_limit : 0; |
| 140 | 687 default_rcpt_rate = INT_MAX; |
| 94 | 688 } |
| 689 | |
| 690 | |
| 691 CONTEXT::~CONTEXT() { | |
| 692 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 693 DNSBLP d = (*i).second; | |
| 694 // delete the underlying DNSBL objects. | |
| 695 delete d; | |
| 696 } | |
| 697 } | |
| 698 | |
| 699 | |
| 700 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 701 if (p == parent) return true; | |
| 702 if (!parent) return false; | |
| 703 return parent->is_parent(p); | |
| 704 } | |
| 705 | |
| 706 | |
| 707 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 708 if (!parent) return name; | |
| 709 char buf[maxlen]; | |
| 710 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 711 return buffer; | |
| 712 } | |
| 713 | |
| 714 | |
| 715 bool CONTEXT::cover_env_to(char *to) { | |
| 716 char buffer[maxlen]; | |
| 717 char *x = strchr(to, '@'); | |
| 718 if (x) x++; | |
| 719 else x = to; | |
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720 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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721 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 722 string_set::iterator i = env_to.find(x); |
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723 if (i != env_to.end()) return true; // we cover the entire domain |
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724 if (x != to) { |
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725 i = env_to.find(to); |
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726 if (i != env_to.end()) return true; // we cover the specific email address |
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727 } |
| 94 | 728 return false; |
| 729 } | |
| 730 | |
| 731 | |
| 732 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 733 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 734 return verifier; | |
| 735 else if (parent) | |
| 736 return parent->find_verify(to); | |
| 737 else | |
| 738 return NULL; | |
| 739 } | |
| 94 | 740 |
| 153 | 741 |
| 162 | 742 WHITELISTERP CONTEXT::find_autowhite(char *from, char *to) { |
| 743 if (whitelister && cover_env_to(to) && !cover_env_to(from)) | |
| 153 | 744 return whitelister; |
| 745 else if (parent) | |
| 162 | 746 return parent->find_autowhite(from, to); |
| 153 | 747 else |
| 748 return NULL; | |
| 94 | 749 } |
| 750 | |
| 751 | |
| 136 | 752 int CONTEXT::find_rate(char *user) { |
| 140 | 753 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 754 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 755 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 756 } |
| 757 | |
| 758 | |
| 94 | 759 char *CONTEXT::find_from(char *from) { |
| 153 | 760 if (whitelister && whitelister->is_white(from)) return token_white; |
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761 char *rc = env_from_default; |
| 94 | 762 string_map::iterator i = env_from.find(from); |
| 117 | 763 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 764 else { |
| 765 char *x = strchr(from, '@'); | |
| 766 if (x) { | |
| 767 x++; | |
| 768 i = env_from.find(x); | |
| 117 | 769 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 770 else { |
| 771 char y = *x; | |
| 772 *x = '\0'; | |
| 773 i = env_from.find(from); | |
| 774 *x = y; | |
| 775 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 776 } | |
| 777 } | |
| 778 } | |
| 779 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 780 return (rc == token_inherit) ? token_unknown : rc; | |
| 781 } | |
| 782 | |
| 783 | |
| 784 CONTEXTP CONTEXT::find_context(char *from) { | |
| 785 context_map::iterator i = env_from_context.find(from); | |
| 117 | 786 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 787 char *x = strchr(from, '@'); |
| 788 if (x) { | |
| 789 x++; | |
| 790 i = env_from_context.find(x); | |
| 117 | 791 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 792 char y = *x; |
| 793 *x = '\0'; | |
| 794 i = env_from_context.find(from); | |
| 795 *x = y; | |
| 796 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 797 } | |
| 798 return this; | |
| 799 } | |
| 800 | |
| 801 | |
| 802 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 803 context_map::iterator i = children.find(name); | |
| 804 if (i != children.end()) return (*i).second; | |
| 805 return NULL; | |
| 806 } | |
| 807 | |
| 808 | |
| 809 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 810 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 811 if (i != dnsbl_names.end()) return (*i).second; | |
| 812 if (parent) return parent->find_dnsbl(name); | |
| 813 return NULL; | |
| 814 } | |
| 815 | |
| 816 | |
| 817 char* CONTEXT::get_content_suffix() { | |
| 818 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 819 return content_suffix; | |
| 820 } | |
| 821 | |
| 822 | |
| 119 | 823 char* CONTEXT::get_uribl_suffix() { |
| 824 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 825 return uribl_suffix; | |
| 826 } | |
| 827 | |
| 828 | |
| 94 | 829 char* CONTEXT::get_content_message() { |
| 830 if (!content_message && parent) return parent->get_content_message(); | |
| 831 return content_message; | |
| 832 } | |
| 833 | |
| 834 | |
| 119 | 835 char* CONTEXT::get_uribl_message() { |
| 836 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 837 return uribl_message; | |
| 838 } | |
| 839 | |
| 840 | |
| 94 | 841 string_set& CONTEXT::get_content_host_ignore() { |
| 842 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 843 return content_host_ignore; | |
| 844 } | |
| 845 | |
| 846 | |
| 117 | 847 string_set& CONTEXT::get_content_cctlds() { |
| 848 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 849 return content_cctlds; | |
| 850 } | |
| 851 | |
| 94 | 852 string_set& CONTEXT::get_content_tlds() { |
| 853 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 854 return content_tlds; | |
| 855 } | |
| 856 | |
| 857 | |
| 858 string_set& CONTEXT::get_html_tags() { | |
| 859 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 860 return html_tags; | |
| 861 } | |
| 862 | |
| 863 | |
| 864 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 865 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 866 return dnsbl_list; | |
| 867 } | |
| 868 | |
| 869 | |
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870 bool CONTEXT::acceptable_content(recorder &memory, int score, string& msg) { |
| 163 | 871 if (spamassassin_limit && (score > spamassassin_limit)) { |
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872 char buf[maxlen]; |
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873 snprintf(buf, sizeof(buf), "Mail rejected - spam assassin score %d", score); |
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874 msg = string(buf); |
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875 return false; |
| 163 | 876 } |
| 94 | 877 if (memory.excessive_bad_tags(tag_limit)) { |
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878 msg = string(tag_limit_message); |
| 94 | 879 return false; |
| 880 } | |
| 881 if (!host_random && memory.excessive_hosts(host_limit)) { | |
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882 msg = string(host_limit_message); |
| 94 | 883 return false; |
| 884 } | |
| 885 return true; | |
| 886 } | |
| 887 | |
| 888 | |
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889 void CONTEXT::dump(bool isdefault, bool &spamass, int level) { |
| 94 | 890 char indent[maxlen]; |
| 891 int i = min(maxlen-1, level*4); | |
| 892 memset(indent, ' ', i); | |
| 893 indent[i] = '\0'; | |
| 894 char buf[maxlen]; | |
| 895 char *fullname = get_full_name(buf,maxlen); | |
| 896 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 897 | |
| 898 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 899 char *n = (*i).first; | |
| 900 DNSBL &d = *(*i).second; | |
| 901 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 902 } | |
| 903 | |
| 145 | 904 dnsblp_list dl = get_dnsbl_list(); |
| 905 if (!dl.empty()) { | |
| 94 | 906 printf("%s dnsbl_list", indent); |
| 145 | 907 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 908 DNSBL &d = *(*i); |
| 909 printf(" %s", d.name); | |
| 910 } | |
| 911 printf("; \n"); | |
| 912 } | |
| 913 | |
| 914 if (content_filtering) { | |
| 915 printf("%s content on { \n", indent, env_from_default); | |
| 916 if (content_suffix) { | |
| 917 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 918 } | |
| 119 | 919 if (uribl_suffix) { |
| 920 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 921 } | |
| 94 | 922 if (!content_host_ignore.empty()) { |
| 923 printf("%s ignore { \n", indent); | |
| 924 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 925 printf("%s %s; \n", indent, *i); | |
| 926 } | |
| 927 printf("%s }; \n", indent); | |
| 928 } | |
| 117 | 929 if (!content_cctlds.empty()) { |
| 930 printf("%s cctld { \n", indent); | |
| 931 printf("%s ", indent); | |
| 932 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 933 printf("%s; ", *i); | |
| 934 } | |
| 935 printf("\n%s }; \n", indent); | |
| 936 } | |
| 94 | 937 if (!content_tlds.empty()) { |
| 938 printf("%s tld { \n", indent); | |
| 939 printf("%s ", indent); | |
| 940 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 941 printf("%s; ", *i); | |
| 942 } | |
| 943 printf("\n%s }; \n", indent); | |
| 944 } | |
| 945 if (!html_tags.empty()) { | |
| 946 printf("%s html_tags { \n", indent); | |
| 947 printf("%s ", indent); | |
| 948 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 949 printf("%s; ", *i); | |
| 950 } | |
| 951 printf("\n%s }; \n", indent); | |
| 952 } | |
| 953 if (host_limit_message) { | |
| 954 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 955 } | |
| 956 else if (host_random) { | |
| 957 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 958 } | |
| 959 else { | |
| 960 printf("%s host_limit off; \n", indent); | |
| 961 } | |
| 962 if (tag_limit_message) { | |
| 963 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 964 } | |
| 965 else { | |
| 966 printf("%s html_limit off; \n", indent); | |
| 967 } | |
| 163 | 968 printf("%s spamassassin %d; \n", indent, spamassassin_limit); |
| 94 | 969 printf("%s }; \n", indent); |
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970 spamass |= (spamassassin_limit != 0); |
| 94 | 971 } |
| 972 else { | |
| 973 printf("%s content off {}; \n", indent, env_from_default); | |
| 974 } | |
| 975 | |
| 976 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 977 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 978 printf("%s %s; \n", indent, *i); | |
| 979 } | |
| 980 printf("%s }; \n", indent); | |
| 981 | |
| 982 if (verify_host) { | |
| 983 printf("%s verify %s; \n", indent, verify_host); | |
| 984 } | |
| 985 | |
| 153 | 986 if (autowhite_file && whitelister) { |
| 987 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 988 } | |
| 989 | |
| 94 | 990 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 991 CONTEXTP c = (*i).second; | |
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992 c->dump(false, spamass, level+1); |
| 94 | 993 } |
| 994 | |
| 995 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 996 if (!env_from.empty()) { | |
| 997 printf("%s // white/black/unknown \n", indent); | |
| 998 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 999 char *f = (*i).first; | |
| 1000 char *t = (*i).second; | |
| 1001 printf("%s %s \t%s; \n", indent, f, t); | |
| 1002 } | |
| 1003 } | |
| 1004 if (!env_from_context.empty()) { | |
| 1005 printf("%s // child contexts \n", indent); | |
| 1006 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 1007 char *f = (*j).first; | |
| 1008 CONTEXTP t = (*j).second; | |
| 1009 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 1010 } | |
| 1011 } | |
| 1012 printf("%s }; \n", indent); | |
| 1013 | |
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1014 if (isdefault) { |
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1015 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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1016 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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1017 char *u = (*j).first; |
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1018 int l = (*j).second; |
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1019 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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1020 } |
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1021 printf("%s }; \n", indent); |
| 136 | 1022 } |
| 1023 | |
| 94 | 1024 printf("%s }; \n", indent); |
| 1025 } | |
| 1026 | |
| 1027 | |
| 1028 //////////////////////////////////////////////// | |
| 1029 // helper to discard the strings held by a string_set | |
| 1030 // | |
| 1031 void discard(string_set &s) { | |
| 1032 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 1033 free(*i); | |
| 1034 } | |
| 1035 s.clear(); | |
| 1036 } | |
| 1037 | |
| 1038 | |
| 1039 //////////////////////////////////////////////// | |
| 1040 // helper to register a string in a string set | |
| 1041 // | |
| 1042 char* register_string(string_set &s, char *name) { | |
| 1043 string_set::iterator i = s.find(name); | |
| 1044 if (i != s.end()) return *i; | |
| 1045 char *x = strdup(name); | |
| 1046 s.insert(x); | |
| 1047 return x; | |
| 1048 } | |
| 1049 | |
| 1050 | |
| 1051 //////////////////////////////////////////////// | |
| 1052 // register a global string | |
| 1053 // | |
| 1054 char* register_string(char *name) { | |
| 1055 return register_string(all_strings, name); | |
| 1056 } | |
| 1057 | |
| 1058 | |
| 1059 //////////////////////////////////////////////// | |
| 164 | 1060 // clear all global strings, helper for valgrind checking |
| 1061 // | |
| 1062 void clear_strings() { | |
| 1063 discard(all_strings); | |
| 1064 } | |
| 1065 | |
| 1066 | |
| 1067 //////////////////////////////////////////////// | |
| 94 | 1068 // |
| 1069 bool tsa(TOKEN &tok, char *token); | |
| 1070 bool tsa(TOKEN &tok, char *token) { | |
| 1071 char *have = tok.next(); | |
| 1072 if (have == token) return true; | |
| 1073 tok.token_error(token, have); | |
| 1074 return false; | |
| 1075 } | |
| 1076 | |
| 1077 | |
| 1078 //////////////////////////////////////////////// | |
| 1079 // | |
| 1080 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1081 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1082 char *name = tok.next(); | |
| 1083 char *suf = tok.next(); | |
| 1084 char *msg = tok.next(); | |
| 1085 if (!tsa(tok, token_semi)) return false; | |
| 1086 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1087 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1088 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1089 // duplicate redefinition, ignore it | |
| 1090 delete dnsnew; | |
| 1091 return true; | |
| 1092 } | |
| 1093 me.add_dnsbl(name, dnsnew); | |
| 1094 return true; | |
| 1095 } | |
| 1096 | |
| 1097 | |
| 1098 //////////////////////////////////////////////// | |
| 1099 // | |
| 1100 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1101 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1102 while (true) { | |
| 1103 char *have = tok.next(); | |
| 1104 if (!have) break; | |
| 1105 if (have == token_semi) break; | |
| 1106 DNSBLP dns = me.find_dnsbl(have); | |
| 1107 if (dns) { | |
| 1108 me.add_dnsbl(dns); | |
| 1109 } | |
| 1110 else { | |
| 1111 tok.token_error("dnsbl name", have); | |
| 1112 return false; | |
| 1113 } | |
| 1114 } | |
| 1115 return true; | |
| 1116 } | |
| 1117 | |
| 1118 | |
| 1119 //////////////////////////////////////////////// | |
| 1120 // | |
| 1121 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1122 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1123 char *setting = tok.next(); | |
| 1124 if (setting == token_on) { | |
| 1125 me.set_content_filtering(true); | |
| 1126 } | |
| 1127 else if (setting == token_off) { | |
| 1128 me.set_content_filtering(false); | |
| 1129 } | |
| 1130 else { | |
| 1131 tok.token_error("on/off", setting); | |
| 1132 return false; | |
| 1133 } | |
| 1134 if (!tsa(tok, token_lbrace)) return false; | |
| 1135 while (true) { | |
| 1136 char *have = tok.next(); | |
| 1137 if (!have) break; | |
| 1138 if (have == token_filter) { | |
| 1139 char *suffix = tok.next(); | |
| 1140 char *messag = tok.next(); | |
| 1141 me.set_content_suffix(suffix); | |
| 1142 me.set_content_message(messag); | |
| 1143 if (!tsa(tok, token_semi)) return false; | |
| 1144 } | |
| 119 | 1145 else if (have == token_uribl) { |
| 1146 char *suffix = tok.next(); | |
| 1147 char *messag = tok.next(); | |
| 1148 me.set_uribl_suffix(suffix); | |
| 1149 me.set_uribl_message(messag); | |
| 1150 if (!tsa(tok, token_semi)) return false; | |
| 1151 } | |
| 94 | 1152 else if (have == token_ignore) { |
| 1153 if (!tsa(tok, token_lbrace)) return false; | |
| 1154 while (true) { | |
| 1155 if (!have) break; | |
| 1156 char *have = tok.next(); | |
| 1157 if (have == token_rbrace) break; // done | |
| 1158 me.add_ignore(have); | |
| 1159 } | |
| 1160 if (!tsa(tok, token_semi)) return false; | |
| 1161 } | |
| 117 | 1162 else if (have == token_cctld) { |
| 1163 if (!tsa(tok, token_lbrace)) return false; | |
| 1164 while (true) { | |
| 1165 char *have = tok.next(); | |
| 1166 if (!have) break; | |
| 1167 if (have == token_rbrace) break; // done | |
| 1168 me.add_cctld(have); | |
| 1169 } | |
| 1170 if (!tsa(tok, token_semi)) return false; | |
| 1171 } | |
| 94 | 1172 else if (have == token_tld) { |
| 1173 if (!tsa(tok, token_lbrace)) return false; | |
| 1174 while (true) { | |
| 1175 char *have = tok.next(); | |
| 1176 if (!have) break; | |
| 1177 if (have == token_rbrace) break; // done | |
| 1178 me.add_tld(have); | |
| 1179 } | |
| 1180 if (!tsa(tok, token_semi)) return false; | |
| 1181 } | |
| 1182 else if (have == token_html_limit) { | |
| 1183 have = tok.next(); | |
| 1184 if (have == token_on) { | |
| 1185 me.set_tag_limit(tok.nextint()); | |
| 1186 me.set_tag_message(tok.next()); | |
| 1187 } | |
| 1188 else if (have == token_off) { | |
| 1189 me.set_tag_limit(0); | |
| 1190 me.set_tag_message(NULL); | |
| 1191 } | |
| 1192 else { | |
| 1193 tok.token_error("on/off", have); | |
| 1194 return false; | |
| 1195 } | |
| 1196 if (!tsa(tok, token_semi)) return false; | |
| 1197 } | |
| 1198 else if (have == token_html_tags) { | |
| 1199 if (!tsa(tok, token_lbrace)) return false; | |
| 1200 while (true) { | |
| 1201 char *have = tok.next(); | |
| 1202 if (!have) break; | |
| 1203 if (have == token_rbrace) { | |
| 1204 break; // done | |
| 1205 } | |
| 1206 else { | |
| 1207 me.add_tag(have); // base version | |
| 1208 char buf[200]; | |
| 1209 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1210 me.add_tag(register_string(buf)); // leading / | |
| 1211 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1212 me.add_tag(register_string(buf)); // trailing / | |
| 1213 } | |
| 1214 } | |
| 1215 if (!tsa(tok, token_semi)) return false; | |
| 1216 } | |
| 1217 else if (have == token_host_limit) { | |
| 1218 have = tok.next(); | |
| 1219 if (have == token_on) { | |
| 1220 me.set_host_limit(tok.nextint()); | |
| 1221 me.set_host_message(tok.next()); | |
| 1222 me.set_host_random(false); | |
| 1223 } | |
| 1224 else if (have == token_off) { | |
| 1225 me.set_host_limit(0); | |
| 1226 me.set_host_message(NULL); | |
| 1227 me.set_host_random(false); | |
| 1228 } | |
| 1229 else if (have == token_soft) { | |
| 1230 me.set_host_limit(tok.nextint()); | |
| 1231 me.set_host_message(NULL); | |
| 1232 me.set_host_random(true); | |
| 1233 } | |
| 1234 else { | |
| 1235 tok.token_error("on/off/soft", have); | |
| 1236 return false; | |
| 1237 } | |
| 1238 if (!tsa(tok, token_semi)) return false; | |
| 1239 } | |
| 163 | 1240 else if (have == token_spamassassin) { |
| 1241 me.set_spamassassin_limit(tok.nextint()); | |
| 1242 if (!tsa(tok, token_semi)) return false; | |
| 1243 } | |
| 94 | 1244 else if (have == token_rbrace) { |
| 1245 break; // done | |
| 1246 } | |
| 1247 else { | |
| 1248 tok.token_error("content keyword", have); | |
| 1249 return false; | |
| 1250 } | |
| 1251 } | |
| 1252 return tsa(tok, token_semi); | |
| 1253 } | |
| 1254 | |
| 1255 | |
| 1256 //////////////////////////////////////////////// | |
| 1257 // | |
| 1258 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1259 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1260 if (!tsa(tok, token_lbrace)) return false; | |
| 1261 while (true) { | |
| 1262 char *have = tok.next(); | |
| 1263 if (!have) break; | |
| 1264 if (have == token_rbrace) break; | |
| 1265 if (have == token_semi) { | |
| 1266 // optional separators | |
| 1267 } | |
| 1268 else if (have == token_dccto) { | |
| 1269 char *flavor = tok.next(); | |
| 1270 if (!tsa(tok, token_lbrace)) return false; | |
| 1271 bool keeping = false; | |
| 1272 while (true) { | |
| 1273 char *have = tok.next(); | |
| 1274 if (!have) break; | |
| 1275 if (have == token_rbrace) break; | |
| 1276 if (have == flavor) { | |
| 1277 keeping = true; | |
| 1278 continue; | |
| 1279 } | |
| 1280 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1281 keeping = false; | |
| 1282 continue; | |
| 1283 } | |
| 1284 if (have == token_envto) { | |
| 1285 have = tok.next(); | |
| 1286 if (keeping) { | |
| 1287 if (me.allow_env_to(have)) { | |
| 1288 me.add_to(have); | |
| 1289 dc.add_to(have, &me); | |
| 1290 } | |
| 1291 } | |
| 1292 } | |
| 1293 //else if (have == token_substitute) { | |
| 1294 // if (tok.next() == token_mailhost) { | |
| 1295 // have = tok.next(); | |
| 1296 // if (keeping) { | |
| 1297 // if (me.allow_env_to(have)) { | |
| 1298 // me.add_to(have); | |
| 1299 // dc.add_to(have, &me); | |
| 1300 // } | |
| 1301 // } | |
| 1302 // } | |
| 1303 //} | |
| 1304 tok.skipeol(); | |
| 1305 } | |
| 1306 } | |
| 1307 else if (me.allow_env_to(have)) { | |
| 1308 me.add_to(have); | |
| 1309 dc.add_to(have, &me); | |
| 1310 } | |
| 1311 else { | |
| 1312 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1313 return false; | |
| 1314 } | |
| 1315 } | |
| 1316 return tsa(tok, token_semi); | |
| 1317 } | |
| 1318 | |
| 1319 | |
| 1320 //////////////////////////////////////////////// | |
| 1321 // | |
| 1322 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1323 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1324 char *host = tok.next(); | |
| 1325 if (!tsa(tok, token_semi)) return false; | |
| 1326 me.set_verify(host); | |
| 153 | 1327 me.set_verifier(add_verify_host(host)); |
| 1328 return true; | |
| 1329 } | |
| 1330 | |
| 1331 | |
| 1332 //////////////////////////////////////////////// | |
| 1333 // | |
| 1334 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1335 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1336 int days = tok.nextint(); | |
| 1337 char *fn = tok.next(); | |
| 1338 if (!tsa(tok, token_semi)) return false; | |
| 1339 me.set_autowhite(fn); | |
| 1340 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1341 return true; |
| 94 | 1342 } |
| 1343 | |
| 1344 | |
| 1345 //////////////////////////////////////////////// | |
| 1346 // | |
| 1347 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1348 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1349 char *st = tok.next(); | |
| 1350 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1351 me.set_from_default(st); | |
| 1352 } | |
| 1353 else { | |
| 1354 tok.push(st); | |
| 1355 } | |
| 1356 if (!tsa(tok, token_lbrace)) return false; | |
| 1357 while (true) { | |
| 1358 char *have = tok.next(); | |
| 1359 if (!have) break; | |
| 1360 if (have == token_rbrace) break; | |
| 1361 if (have == token_semi) { | |
| 1362 // optional separators | |
| 1363 } | |
| 1364 else if (have == token_dccfrom) { | |
| 1365 if (!tsa(tok, token_lbrace)) return false; | |
| 1366 bool keeping = false; | |
| 1367 bool many = false; | |
| 1368 while (true) { | |
| 1369 char *have = tok.next(); | |
| 1370 if (!have) break; | |
| 1371 if (have == token_rbrace) break; | |
| 1372 if (have == token_ok) { | |
| 1373 keeping = true; | |
| 1374 many = false; | |
| 1375 continue; | |
| 1376 } | |
| 1377 else if (have == token_many) { | |
| 1378 keeping = true; | |
| 1379 many = true; | |
| 1380 continue; | |
| 1381 } | |
| 1382 else if (have == token_ok2) { | |
| 1383 keeping = false; | |
| 1384 continue; | |
| 1385 } | |
| 1386 if (have == token_envfrom) { | |
| 1387 have = tok.next(); | |
| 1388 if (keeping) { | |
| 1389 me.add_from(have, (many) ? token_black : token_white); | |
| 1390 } | |
| 1391 } | |
| 1392 else if (have == token_substitute) { | |
| 1393 if (tok.next() == token_mailhost) { | |
| 1394 have = tok.next(); | |
| 1395 me.add_from(have, (many) ? token_black : token_white); | |
| 1396 } | |
| 1397 } | |
| 1398 tok.skipeol(); | |
| 1399 } | |
| 1400 } | |
| 1401 else { | |
| 1402 // may be a valid email address or domain name | |
| 1403 char *st = tok.next(); | |
|
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1404 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1405 me.add_from(have, st); |
| 1406 } | |
| 1407 else { | |
| 1408 CONTEXTP con = me.find_from_context_name(st); | |
| 1409 if (con) { | |
| 1410 me.add_from_context(have, con); | |
| 1411 } | |
| 1412 else { | |
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1413 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1414 return false; |
| 1415 } | |
| 1416 } | |
| 1417 } | |
| 1418 } | |
| 1419 return tsa(tok, token_semi); | |
| 1420 } | |
| 1421 | |
| 1422 | |
| 1423 //////////////////////////////////////////////// | |
| 1424 // | |
| 136 | 1425 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1426 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1427 char *def = tok.next(); |
| 141 | 1428 tok.push(def); |
| 1429 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1430 if (!tsa(tok, token_lbrace)) return false; |
| 1431 while (true) { | |
| 1432 char *have = tok.next(); | |
| 1433 if (!have) break; | |
| 1434 if (have == token_rbrace) break; | |
| 1435 if (have == token_semi) { | |
| 1436 // optional separators | |
| 1437 } | |
| 1438 else { | |
| 140 | 1439 me.add_rate(have, tok.nextint()); |
| 136 | 1440 } |
| 1441 } | |
| 1442 return tsa(tok, token_semi); | |
| 1443 } | |
| 1444 | |
| 1445 | |
| 1446 //////////////////////////////////////////////// | |
| 1447 // | |
| 94 | 1448 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1449 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1450 char *name = tok.next(); | |
| 1451 if (!tsa(tok, token_lbrace)) return false; | |
| 1452 CONTEXTP con = new CONTEXT(parent, name); | |
| 1453 | |
| 1454 while (true) { | |
| 1455 char *have = tok.next(); | |
| 1456 if (!have) break; | |
| 1457 if (have == token_rbrace) break; // done | |
| 1458 if (have == token_dnsbl) { | |
| 1459 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1460 } | |
| 1461 else if (have == token_dnsbll) { | |
| 1462 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1463 } | |
| 1464 else if (have == token_content) { | |
| 1465 if (!parse_content(tok, dc, *con)) return false; | |
| 1466 } | |
| 1467 else if (have == token_envto) { | |
| 1468 if (!parse_envto(tok, dc, *con)) return false; | |
| 1469 } | |
| 1470 else if (have == token_verify) { | |
| 1471 if (!parse_verify(tok, dc, *con)) return false; | |
| 1472 } | |
| 153 | 1473 else if (have == token_autowhite) { |
| 1474 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1475 } | |
| 94 | 1476 else if (have == token_envfrom) { |
| 1477 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1478 } | |
| 140 | 1479 else if (have == token_rate) { |
| 1480 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1481 if (!parse_rate(tok, dc, *con)) return false; |
| 1482 } | |
| 94 | 1483 else if (have == token_context) { |
| 1484 if (!parse_context(tok, dc, con)) return false; | |
| 1485 } | |
| 1486 else { | |
| 1487 tok.token_error("context keyword", have); | |
| 1488 return false; | |
| 1489 } | |
| 1490 } | |
| 1491 | |
| 1492 if (!tsa(tok, token_semi)) { | |
| 1493 delete con; | |
| 1494 return false; | |
| 1495 } | |
| 1496 dc.add_context(con); | |
| 1497 if (parent) parent->add_context(con); | |
| 1498 return true; | |
| 1499 } | |
| 1500 | |
| 1501 | |
| 1502 //////////////////////////////////////////////// | |
| 1503 // parse a config file | |
| 1504 // | |
| 1505 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1506 int count = 0; |
| 94 | 1507 TOKEN tok(fn, &dc.config_files); |
| 1508 while (true) { | |
| 1509 char *have = tok.next(); | |
| 1510 if (!have) break; | |
| 1511 if (have == token_context) { | |
| 1512 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1513 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1514 return false; |
| 1515 } | |
| 99 | 1516 else count++; |
| 94 | 1517 } |
| 1518 else { | |
| 1519 tok.token_error(token_context, have); | |
| 1520 return false; | |
| 1521 } | |
| 1522 } | |
| 99 | 1523 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1524 return (dc.default_context) ? true : false; |
| 1525 } | |
| 1526 | |
| 1527 | |
| 1528 //////////////////////////////////////////////// | |
| 1529 // init the tokens | |
| 1530 // | |
| 1531 void token_init() { | |
| 163 | 1532 token_autowhite = register_string("autowhite"); |
| 1533 token_black = register_string("black"); | |
| 1534 token_cctld = register_string("cctld"); | |
| 1535 token_content = register_string("content"); | |
| 1536 token_context = register_string("context"); | |
| 1537 token_dccfrom = register_string("dcc_from"); | |
| 1538 token_dccto = register_string("dcc_to"); | |
| 1539 token_default = register_string("default"); | |
| 1540 token_dnsbl = register_string("dnsbl"); | |
| 1541 token_dnsbll = register_string("dnsbl_list"); | |
| 1542 token_envfrom = register_string("env_from"); | |
| 1543 token_envto = register_string("env_to"); | |
| 1544 token_filter = register_string("filter"); | |
| 1545 token_host_limit = register_string("host_limit"); | |
| 1546 token_html_limit = register_string("html_limit"); | |
| 1547 token_html_tags = register_string("html_tags"); | |
| 1548 token_ignore = register_string("ignore"); | |
| 1549 token_include = register_string("include"); | |
| 1550 token_inherit = register_string("inherit"); | |
| 1551 token_lbrace = register_string("{"); | |
| 1552 token_mailhost = register_string("mail_host"); | |
| 1553 token_many = register_string("many"); | |
| 1554 token_off = register_string("off"); | |
| 1555 token_ok = register_string("ok"); | |
| 1556 token_ok2 = register_string("ok2"); | |
| 1557 token_on = register_string("on"); | |
| 1558 token_rate = register_string("rate_limit"); | |
| 1559 token_rbrace = register_string("}"); | |
| 1560 token_semi = register_string(";"); | |
| 1561 token_soft = register_string("soft"); | |
| 1562 token_spamassassin = register_string("spamassassin"); | |
| 1563 token_substitute = register_string("substitute"); | |
| 1564 token_tld = register_string("tld"); | |
| 1565 token_unknown = register_string("unknown"); | |
| 1566 token_uribl = register_string("uribl"); | |
| 1567 token_verify = register_string("verify"); | |
| 1568 token_white = register_string("white"); | |
| 94 | 1569 |
| 1570 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1571 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1572 } | |
| 1573 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1574 token_myhostname = register_string(myhostname); | |
| 1575 } |