Mercurial > dnsbl
annotate src/context.cpp @ 175:e726e1a61ef9
allow manual whitelisting with stamp 1 to remove a whitelist entry
| author | carl |
|---|---|
| date | Sun, 23 Sep 2007 14:08:17 -0700 |
| parents | da0c41b9f672 |
| children | d6531c702be3 |
| 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 |
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72 pthread_mutex_t whitelister_mutex; // protect the whitelisters map |
| 153 | 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); | |
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450 if (i == rcpts.end()) { |
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451 rcpts[who] = when; |
| 160 | 452 } |
| 453 else { | |
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454 time_t wh = (*i).second; |
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455 if ((when == 1) || (when > wh)) (*i).second = when; |
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456 free(who); |
| 160 | 457 } |
| 154 | 458 } |
| 459 } | |
| 460 } | |
| 461 ifs.close(); | |
| 153 | 462 } |
| 463 | |
| 464 | |
| 465 void WHITELISTER::writer() { | |
| 466 pthread_mutex_lock(&mutex); | |
| 467 time_t limit = time(NULL) - days*86400; | |
| 160 | 468 |
| 469 // check for manually modified autowhitelist file | |
| 470 struct stat st; | |
| 471 if (stat(fn, &st)) need = true; // file has disappeared | |
| 472 else if (st.st_mtime > loaded) { | |
| 473 // file has been manually updated, merge new entries | |
| 474 merge(); | |
| 475 need = true; | |
| 476 } | |
| 477 | |
| 478 // purge old entries | |
| 153 | 479 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end();) { |
| 480 time_t when = (*i).second; | |
| 481 if (when < limit) { | |
| 154 | 482 char *who = (*i).first; |
| 483 free(who); | |
| 153 | 484 autowhite_sent::iterator j = i; |
| 485 j++; | |
| 486 rcpts.erase(i); | |
| 487 i = j; | |
| 488 need = true; | |
| 489 } | |
| 490 else i++; | |
| 491 } | |
| 160 | 492 |
| 153 | 493 if (need) { |
| 494 // dump the file | |
| 154 | 495 ofstream ofs; |
| 496 ofs.open(fn); | |
| 497 if (!ofs.fail()) { | |
| 153 | 498 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end(); i++) { |
| 499 char *who = (*i).first; | |
| 500 int when = (*i).second; | |
| 174 | 501 if (!strchr(who, ' ')) { |
| 502 ofs << who << " " << when << endl; | |
| 503 } | |
| 153 | 504 } |
| 505 } | |
| 154 | 506 ofs.close(); |
| 156 | 507 need = false; |
| 160 | 508 loaded = time(NULL); // update load time |
| 153 | 509 } |
| 510 pthread_mutex_unlock(&mutex); | |
| 511 } | |
| 512 | |
| 513 | |
| 514 void WHITELISTER::sent(char *to) { | |
| 154 | 515 // we take ownership of the string |
| 153 | 516 pthread_mutex_lock(&mutex); |
| 517 need = true; | |
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518 autowhite_sent::iterator i = rcpts.find(to); |
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519 if (i == rcpts.end()) { |
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520 rcpts[to] = time(NULL); |
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521 } |
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522 else { |
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523 (*i).second = time(NULL); |
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524 free(to); |
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525 } |
| 153 | 526 pthread_mutex_unlock(&mutex); |
| 527 } | |
| 528 | |
| 529 | |
| 530 bool WHITELISTER::is_white(char *from) { | |
| 531 pthread_mutex_lock(&mutex); | |
| 532 autowhite_sent::iterator i = rcpts.find(from); | |
| 162 | 533 bool rc = (i != rcpts.end()); |
| 153 | 534 pthread_mutex_unlock(&mutex); |
| 535 return rc; | |
| 536 } | |
| 537 | |
| 538 | |
| 539 //////////////////////////////////////////////// | |
| 540 // setup a new auto whitelister file | |
| 541 // | |
| 542 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 543 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 544 WHITELISTERP rc = NULL; | |
| 545 pthread_mutex_lock(&whitelister_mutex); | |
| 546 whitelister_map::iterator i = whitelisters.find(fn); | |
| 547 if (i == whitelisters.end()) { | |
| 548 rc = new WHITELISTER(fn, days); | |
| 549 whitelisters[fn] = rc; | |
| 550 } | |
| 156 | 551 else { |
| 552 rc = (*i).second; | |
| 553 rc->set_days(days); | |
| 554 } | |
| 153 | 555 pthread_mutex_unlock(&whitelister_mutex); |
| 556 return rc; | |
| 557 } | |
| 558 | |
| 559 | |
| 560 //////////////////////////////////////////////// | |
| 561 // thread to check for whitelister hosts with old sockets that we can close | |
| 562 // | |
| 563 void* whitelister_writer(void *arg) { | |
| 564 while (true) { | |
| 565 sleep(maxauto_age); | |
| 566 pthread_mutex_lock(&whitelister_mutex); | |
| 567 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 568 WHITELISTERP v = (*i).second; | |
| 569 v->writer(); | |
| 570 } | |
| 571 pthread_mutex_unlock(&whitelister_mutex); | |
| 572 } | |
| 573 return NULL; | |
| 574 } | |
| 575 | |
| 576 | |
| 94 | 577 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 578 name = n; | |
| 579 suffix = s; | |
| 580 message = m; | |
| 581 } | |
| 582 | |
| 583 | |
| 584 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 585 return (strcmp(name, rhs.name) == 0) && | |
| 586 (strcmp(suffix, rhs.suffix) == 0) && | |
| 587 (strcmp(message, rhs.message) == 0); | |
| 588 } | |
| 589 | |
| 590 | |
| 591 CONFIG::CONFIG() { | |
| 592 reference_count = 0; | |
| 593 generation = 0; | |
| 594 load_time = 0; | |
| 595 default_context = NULL; | |
| 596 } | |
| 597 | |
| 598 | |
| 599 CONFIG::~CONFIG() { | |
| 146 | 600 if (debug_syslog) { |
| 601 char buf[maxlen]; | |
| 602 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 603 my_syslog(buf); | |
| 604 } | |
| 94 | 605 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 606 CONTEXT *c = *i; | |
| 607 delete c; | |
| 608 } | |
| 609 } | |
| 610 | |
| 611 | |
| 612 void CONFIG::add_context(CONTEXTP con) { | |
| 613 contexts.push_back(con); | |
| 614 if (!default_context && !con->get_parent()) { | |
| 615 // first global context | |
| 616 default_context = con; | |
| 617 } | |
| 618 } | |
| 619 | |
| 620 | |
| 621 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 622 context_map::iterator i = env_to.find(to); | |
| 623 if (i != env_to.end()) { | |
| 624 CONTEXTP c = (*i).second; | |
| 625 if ((c != con) && (c != con->get_parent())) { | |
| 626 if (debug_syslog) { | |
| 627 char oldname[maxlen]; | |
| 628 char newname[maxlen]; | |
| 629 char *oldn = c->get_full_name(oldname, maxlen); | |
| 630 char *newn = con->get_full_name(newname, maxlen); | |
| 631 char buf[maxlen*3]; | |
| 632 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 633 my_syslog(buf); | |
| 634 } | |
| 635 } | |
| 636 } | |
| 637 env_to[to] = con; | |
| 638 } | |
| 639 | |
| 640 | |
| 641 CONTEXTP CONFIG::find_context(char *to) { | |
| 642 context_map::iterator i = env_to.find(to); | |
| 117 | 643 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 644 char *x = strchr(to, '@'); |
| 645 if (x) { | |
| 646 x++; | |
| 647 i = env_to.find(x); | |
| 117 | 648 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 649 char y = *x; |
| 650 *x = '\0'; | |
| 651 i = env_to.find(to); | |
| 652 *x = y; | |
| 653 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 654 } | |
| 655 return default_context; | |
| 656 } | |
| 657 | |
| 658 | |
| 659 void CONFIG::dump() { | |
|
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660 bool spamass = false; |
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661 if (default_context) default_context->dump(true, spamass); |
| 94 | 662 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 663 CONTEXTP c = *i; | |
| 664 CONTEXTP p = c->get_parent(); | |
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665 if (!p && (c != default_context)) c->dump(false, spamass); |
| 94 | 666 } |
| 667 char buf[maxlen]; | |
| 668 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 669 char *to = (*i).first; | |
| 670 CONTEXTP con = (*i).second; | |
| 671 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 672 } | |
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673 if (spamass && (spamc == spamc_empty)) { |
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674 printf("// *** warning - spamassassin filtering requested, but spamc not found by autoconf.\n"); |
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675 } |
| 94 | 676 } |
| 677 | |
| 678 | |
| 679 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 680 parent = parent_; | |
| 681 name = name_; | |
| 682 verify_host = NULL; | |
| 153 | 683 verifier = NULL; |
| 168 | 684 generic_regx = NULL; |
| 685 generic_message = NULL; | |
| 153 | 686 autowhite_file = NULL; |
| 687 whitelister = NULL; | |
| 94 | 688 env_from_default = (parent) ? token_inherit : token_unknown; |
| 689 content_filtering = (parent) ? parent->content_filtering : false; | |
| 690 content_suffix = NULL; | |
| 691 content_message = NULL; | |
| 119 | 692 uribl_suffix = NULL; |
| 693 uribl_message = NULL; | |
| 94 | 694 host_limit = (parent) ? parent->host_limit : 0; |
| 695 host_limit_message = NULL; | |
| 696 host_random = (parent) ? parent->host_random : false; | |
| 697 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 698 tag_limit_message = NULL; | |
| 163 | 699 spamassassin_limit = (parent) ? parent->spamassassin_limit : 0; |
| 140 | 700 default_rcpt_rate = INT_MAX; |
| 94 | 701 } |
| 702 | |
| 703 | |
| 704 CONTEXT::~CONTEXT() { | |
| 705 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 706 DNSBLP d = (*i).second; | |
| 707 // delete the underlying DNSBL objects. | |
| 708 delete d; | |
| 709 } | |
| 170 | 710 if (generic_regx) regfree(&generic_pattern); |
| 94 | 711 } |
| 712 | |
| 713 | |
| 714 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 715 if (p == parent) return true; | |
| 716 if (!parent) return false; | |
| 717 return parent->is_parent(p); | |
| 718 } | |
| 719 | |
| 720 | |
| 721 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 722 if (!parent) return name; | |
| 723 char buf[maxlen]; | |
| 724 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 725 return buffer; | |
| 726 } | |
| 727 | |
| 728 | |
| 168 | 729 bool CONTEXT::set_generic(char *regx, char *msg) |
| 730 { | |
| 731 int rc = 0; | |
| 170 | 732 if (generic_regx) regfree(&generic_pattern); |
| 168 | 733 generic_regx = regx; |
| 734 generic_message = msg; | |
| 170 | 735 if (generic_regx) { |
| 168 | 736 rc = regcomp(&generic_pattern, regx, REG_NOSUB | REG_ICASE | REG_EXTENDED); |
| 737 } | |
| 738 return rc; // true iff bad pattern | |
| 739 } | |
| 740 | |
| 741 | |
| 742 char *CONTEXT::generic_match(char *client) | |
| 743 { | |
| 744 if (parent && !generic_regx) return parent->generic_match(client); | |
| 170 | 745 if (!generic_regx) return NULL; |
| 168 | 746 if (0 == regexec(&generic_pattern, client, 0, NULL, 0)) { |
| 747 return generic_message; | |
| 748 } | |
| 749 return NULL; | |
| 750 } | |
| 751 | |
| 752 | |
| 94 | 753 bool CONTEXT::cover_env_to(char *to) { |
| 754 char buffer[maxlen]; | |
| 755 char *x = strchr(to, '@'); | |
| 756 if (x) x++; | |
| 757 else x = to; | |
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758 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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759 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 760 string_set::iterator i = env_to.find(x); |
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761 if (i != env_to.end()) return true; // we cover the entire domain |
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762 if (x != to) { |
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763 i = env_to.find(to); |
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764 if (i != env_to.end()) return true; // we cover the specific email address |
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765 } |
| 94 | 766 return false; |
| 767 } | |
| 768 | |
| 769 | |
| 770 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 771 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 772 return verifier; | |
| 773 else if (parent) | |
| 774 return parent->find_verify(to); | |
| 775 else | |
| 776 return NULL; | |
| 777 } | |
| 94 | 778 |
| 153 | 779 |
| 162 | 780 WHITELISTERP CONTEXT::find_autowhite(char *from, char *to) { |
| 781 if (whitelister && cover_env_to(to) && !cover_env_to(from)) | |
| 153 | 782 return whitelister; |
| 783 else if (parent) | |
| 162 | 784 return parent->find_autowhite(from, to); |
| 153 | 785 else |
| 786 return NULL; | |
| 94 | 787 } |
| 788 | |
| 789 | |
| 136 | 790 int CONTEXT::find_rate(char *user) { |
| 140 | 791 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 792 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 793 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 794 } |
| 795 | |
| 796 | |
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797 char *CONTEXT::find_from(char *from, bool update_white) { |
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798 if (whitelister && whitelister->is_white(from)) { |
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799 if (update_white) { |
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800 // update senders timestamp to extend the whitelisting period |
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801 if (debug_syslog > 1) { |
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802 char buf[maxlen]; |
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803 char msg[maxlen]; |
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804 snprintf(msg, sizeof(msg), "extend whitelist reply from <%s> in context %s", from, get_full_name(buf,maxlen)); |
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805 my_syslog(msg); |
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806 } |
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807 whitelister->sent(strdup(from)); |
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808 } |
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809 return token_white; |
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810 } |
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811 char *rc = env_from_default; |
| 94 | 812 string_map::iterator i = env_from.find(from); |
| 117 | 813 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 814 else { |
| 815 char *x = strchr(from, '@'); | |
| 816 if (x) { | |
| 817 x++; | |
| 818 i = env_from.find(x); | |
| 117 | 819 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 820 else { |
| 821 char y = *x; | |
| 822 *x = '\0'; | |
| 823 i = env_from.find(from); | |
| 824 *x = y; | |
| 825 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 826 } | |
| 827 } | |
| 828 } | |
| 829 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 830 return (rc == token_inherit) ? token_unknown : rc; | |
| 831 } | |
| 832 | |
| 833 | |
| 834 CONTEXTP CONTEXT::find_context(char *from) { | |
| 835 context_map::iterator i = env_from_context.find(from); | |
| 117 | 836 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 837 char *x = strchr(from, '@'); |
| 838 if (x) { | |
| 839 x++; | |
| 840 i = env_from_context.find(x); | |
| 117 | 841 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 842 char y = *x; |
| 843 *x = '\0'; | |
| 844 i = env_from_context.find(from); | |
| 845 *x = y; | |
| 846 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 847 } | |
| 848 return this; | |
| 849 } | |
| 850 | |
| 851 | |
| 852 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 853 context_map::iterator i = children.find(name); | |
| 854 if (i != children.end()) return (*i).second; | |
| 855 return NULL; | |
| 856 } | |
| 857 | |
| 858 | |
| 859 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 860 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 861 if (i != dnsbl_names.end()) return (*i).second; | |
| 862 if (parent) return parent->find_dnsbl(name); | |
| 863 return NULL; | |
| 864 } | |
| 865 | |
| 866 | |
| 867 char* CONTEXT::get_content_suffix() { | |
| 868 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 869 return content_suffix; | |
| 870 } | |
| 871 | |
| 872 | |
| 119 | 873 char* CONTEXT::get_uribl_suffix() { |
| 874 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 875 return uribl_suffix; | |
| 876 } | |
| 877 | |
| 878 | |
| 94 | 879 char* CONTEXT::get_content_message() { |
| 880 if (!content_message && parent) return parent->get_content_message(); | |
| 881 return content_message; | |
| 882 } | |
| 883 | |
| 884 | |
| 119 | 885 char* CONTEXT::get_uribl_message() { |
| 886 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 887 return uribl_message; | |
| 888 } | |
| 889 | |
| 890 | |
| 94 | 891 string_set& CONTEXT::get_content_host_ignore() { |
| 892 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 893 return content_host_ignore; | |
| 894 } | |
| 895 | |
| 896 | |
| 117 | 897 string_set& CONTEXT::get_content_cctlds() { |
| 898 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 899 return content_cctlds; | |
| 900 } | |
| 901 | |
| 94 | 902 string_set& CONTEXT::get_content_tlds() { |
| 903 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 904 return content_tlds; | |
| 905 } | |
| 906 | |
| 907 | |
| 908 string_set& CONTEXT::get_html_tags() { | |
| 909 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 910 return html_tags; | |
| 911 } | |
| 912 | |
| 913 | |
| 914 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 915 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 916 return dnsbl_list; | |
| 917 } | |
| 918 | |
| 919 | |
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920 bool CONTEXT::acceptable_content(recorder &memory, int score, string& msg) { |
| 163 | 921 if (spamassassin_limit && (score > spamassassin_limit)) { |
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922 char buf[maxlen]; |
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923 snprintf(buf, sizeof(buf), "Mail rejected - spam assassin score %d", score); |
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924 msg = string(buf); |
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925 return false; |
| 163 | 926 } |
| 94 | 927 if (memory.excessive_bad_tags(tag_limit)) { |
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928 msg = string(tag_limit_message); |
| 94 | 929 return false; |
| 930 } | |
| 931 if (!host_random && memory.excessive_hosts(host_limit)) { | |
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932 msg = string(host_limit_message); |
| 94 | 933 return false; |
| 934 } | |
| 935 return true; | |
| 936 } | |
| 937 | |
| 938 | |
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939 void CONTEXT::dump(bool isdefault, bool &spamass, int level) { |
| 94 | 940 char indent[maxlen]; |
| 941 int i = min(maxlen-1, level*4); | |
| 942 memset(indent, ' ', i); | |
| 943 indent[i] = '\0'; | |
| 944 char buf[maxlen]; | |
| 945 char *fullname = get_full_name(buf,maxlen); | |
| 946 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 947 | |
| 948 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 949 char *n = (*i).first; | |
| 950 DNSBL &d = *(*i).second; | |
| 951 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 952 } | |
| 953 | |
| 145 | 954 dnsblp_list dl = get_dnsbl_list(); |
| 955 if (!dl.empty()) { | |
| 94 | 956 printf("%s dnsbl_list", indent); |
| 145 | 957 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 958 DNSBL &d = *(*i); |
| 959 printf(" %s", d.name); | |
| 960 } | |
| 961 printf("; \n"); | |
| 962 } | |
| 963 | |
| 964 if (content_filtering) { | |
| 965 printf("%s content on { \n", indent, env_from_default); | |
| 966 if (content_suffix) { | |
| 967 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 968 } | |
| 119 | 969 if (uribl_suffix) { |
| 970 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 971 } | |
| 94 | 972 if (!content_host_ignore.empty()) { |
| 973 printf("%s ignore { \n", indent); | |
| 974 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 975 printf("%s %s; \n", indent, *i); | |
| 976 } | |
| 977 printf("%s }; \n", indent); | |
| 978 } | |
| 117 | 979 if (!content_cctlds.empty()) { |
| 980 printf("%s cctld { \n", indent); | |
| 981 printf("%s ", indent); | |
| 982 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 983 printf("%s; ", *i); | |
| 984 } | |
| 985 printf("\n%s }; \n", indent); | |
| 986 } | |
| 94 | 987 if (!content_tlds.empty()) { |
| 988 printf("%s tld { \n", indent); | |
| 989 printf("%s ", indent); | |
| 990 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 991 printf("%s; ", *i); | |
| 992 } | |
| 993 printf("\n%s }; \n", indent); | |
| 994 } | |
| 995 if (!html_tags.empty()) { | |
| 996 printf("%s html_tags { \n", indent); | |
| 997 printf("%s ", indent); | |
| 998 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 999 printf("%s; ", *i); | |
| 1000 } | |
| 1001 printf("\n%s }; \n", indent); | |
| 1002 } | |
| 1003 if (host_limit_message) { | |
| 1004 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 1005 } | |
| 1006 else if (host_random) { | |
| 1007 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 1008 } | |
| 1009 else { | |
| 1010 printf("%s host_limit off; \n", indent); | |
| 1011 } | |
| 1012 if (tag_limit_message) { | |
| 1013 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 1014 } | |
| 1015 else { | |
| 1016 printf("%s html_limit off; \n", indent); | |
| 1017 } | |
| 163 | 1018 printf("%s spamassassin %d; \n", indent, spamassassin_limit); |
| 94 | 1019 printf("%s }; \n", indent); |
|
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1020 spamass |= (spamassassin_limit != 0); |
| 94 | 1021 } |
| 1022 else { | |
| 1023 printf("%s content off {}; \n", indent, env_from_default); | |
| 1024 } | |
| 1025 | |
| 1026 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 1027 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 1028 printf("%s %s; \n", indent, *i); | |
| 1029 } | |
| 1030 printf("%s }; \n", indent); | |
| 1031 | |
| 1032 if (verify_host) { | |
| 1033 printf("%s verify %s; \n", indent, verify_host); | |
| 1034 } | |
| 1035 | |
| 168 | 1036 if (generic_regx) { |
| 1037 printf("%s generic \"%s\" \n", indent, generic_regx); | |
| 1038 printf("%s \"%s\"; \n", indent, generic_message); | |
| 1039 } | |
| 1040 | |
| 153 | 1041 if (autowhite_file && whitelister) { |
| 1042 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 1043 } | |
| 1044 | |
| 94 | 1045 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 1046 CONTEXTP c = (*i).second; | |
|
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1047 c->dump(false, spamass, level+1); |
| 94 | 1048 } |
| 1049 | |
| 1050 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 1051 if (!env_from.empty()) { | |
| 1052 printf("%s // white/black/unknown \n", indent); | |
| 1053 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 1054 char *f = (*i).first; | |
| 1055 char *t = (*i).second; | |
| 1056 printf("%s %s \t%s; \n", indent, f, t); | |
| 1057 } | |
| 1058 } | |
| 1059 if (!env_from_context.empty()) { | |
| 1060 printf("%s // child contexts \n", indent); | |
| 1061 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 1062 char *f = (*j).first; | |
| 1063 CONTEXTP t = (*j).second; | |
| 1064 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 1065 } | |
| 1066 } | |
| 1067 printf("%s }; \n", indent); | |
| 1068 | |
|
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1069 if (isdefault) { |
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1070 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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1071 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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1072 char *u = (*j).first; |
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1073 int l = (*j).second; |
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1074 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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1075 } |
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1076 printf("%s }; \n", indent); |
| 136 | 1077 } |
| 1078 | |
| 94 | 1079 printf("%s }; \n", indent); |
| 1080 } | |
| 1081 | |
| 1082 | |
| 1083 //////////////////////////////////////////////// | |
| 1084 // helper to discard the strings held by a string_set | |
| 1085 // | |
| 1086 void discard(string_set &s) { | |
| 1087 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 1088 free(*i); | |
| 1089 } | |
| 1090 s.clear(); | |
| 1091 } | |
| 1092 | |
| 1093 | |
| 1094 //////////////////////////////////////////////// | |
| 1095 // helper to register a string in a string set | |
| 1096 // | |
| 1097 char* register_string(string_set &s, char *name) { | |
| 1098 string_set::iterator i = s.find(name); | |
| 1099 if (i != s.end()) return *i; | |
| 1100 char *x = strdup(name); | |
| 1101 s.insert(x); | |
| 1102 return x; | |
| 1103 } | |
| 1104 | |
| 1105 | |
| 1106 //////////////////////////////////////////////// | |
| 1107 // register a global string | |
| 1108 // | |
| 1109 char* register_string(char *name) { | |
| 1110 return register_string(all_strings, name); | |
| 1111 } | |
| 1112 | |
| 1113 | |
| 1114 //////////////////////////////////////////////// | |
| 164 | 1115 // clear all global strings, helper for valgrind checking |
| 1116 // | |
| 1117 void clear_strings() { | |
| 1118 discard(all_strings); | |
| 1119 } | |
| 1120 | |
| 1121 | |
| 1122 //////////////////////////////////////////////// | |
| 94 | 1123 // |
| 1124 bool tsa(TOKEN &tok, char *token); | |
| 1125 bool tsa(TOKEN &tok, char *token) { | |
| 1126 char *have = tok.next(); | |
| 1127 if (have == token) return true; | |
| 1128 tok.token_error(token, have); | |
| 1129 return false; | |
| 1130 } | |
| 1131 | |
| 1132 | |
| 1133 //////////////////////////////////////////////// | |
| 1134 // | |
| 1135 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1136 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1137 char *name = tok.next(); | |
| 1138 char *suf = tok.next(); | |
| 1139 char *msg = tok.next(); | |
| 1140 if (!tsa(tok, token_semi)) return false; | |
| 1141 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1142 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1143 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1144 // duplicate redefinition, ignore it | |
| 1145 delete dnsnew; | |
| 1146 return true; | |
| 1147 } | |
| 1148 me.add_dnsbl(name, dnsnew); | |
| 1149 return true; | |
| 1150 } | |
| 1151 | |
| 1152 | |
| 1153 //////////////////////////////////////////////// | |
| 1154 // | |
| 1155 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1156 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1157 while (true) { | |
| 1158 char *have = tok.next(); | |
| 1159 if (!have) break; | |
| 1160 if (have == token_semi) break; | |
| 1161 DNSBLP dns = me.find_dnsbl(have); | |
| 1162 if (dns) { | |
| 1163 me.add_dnsbl(dns); | |
| 1164 } | |
| 1165 else { | |
| 1166 tok.token_error("dnsbl name", have); | |
| 1167 return false; | |
| 1168 } | |
| 1169 } | |
| 1170 return true; | |
| 1171 } | |
| 1172 | |
| 1173 | |
| 1174 //////////////////////////////////////////////// | |
| 1175 // | |
| 1176 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1177 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1178 char *setting = tok.next(); | |
| 1179 if (setting == token_on) { | |
| 1180 me.set_content_filtering(true); | |
| 1181 } | |
| 1182 else if (setting == token_off) { | |
| 1183 me.set_content_filtering(false); | |
| 1184 } | |
| 1185 else { | |
| 1186 tok.token_error("on/off", setting); | |
| 1187 return false; | |
| 1188 } | |
| 1189 if (!tsa(tok, token_lbrace)) return false; | |
| 1190 while (true) { | |
| 1191 char *have = tok.next(); | |
| 1192 if (!have) break; | |
| 1193 if (have == token_filter) { | |
| 1194 char *suffix = tok.next(); | |
| 1195 char *messag = tok.next(); | |
| 1196 me.set_content_suffix(suffix); | |
| 1197 me.set_content_message(messag); | |
| 1198 if (!tsa(tok, token_semi)) return false; | |
| 1199 } | |
| 119 | 1200 else if (have == token_uribl) { |
| 1201 char *suffix = tok.next(); | |
| 1202 char *messag = tok.next(); | |
| 1203 me.set_uribl_suffix(suffix); | |
| 1204 me.set_uribl_message(messag); | |
| 1205 if (!tsa(tok, token_semi)) return false; | |
| 1206 } | |
| 94 | 1207 else if (have == token_ignore) { |
| 1208 if (!tsa(tok, token_lbrace)) return false; | |
| 1209 while (true) { | |
| 1210 if (!have) break; | |
| 1211 char *have = tok.next(); | |
| 1212 if (have == token_rbrace) break; // done | |
| 1213 me.add_ignore(have); | |
| 1214 } | |
| 1215 if (!tsa(tok, token_semi)) return false; | |
| 1216 } | |
| 117 | 1217 else if (have == token_cctld) { |
| 1218 if (!tsa(tok, token_lbrace)) return false; | |
| 1219 while (true) { | |
| 1220 char *have = tok.next(); | |
| 1221 if (!have) break; | |
| 1222 if (have == token_rbrace) break; // done | |
| 1223 me.add_cctld(have); | |
| 1224 } | |
| 1225 if (!tsa(tok, token_semi)) return false; | |
| 1226 } | |
| 94 | 1227 else if (have == token_tld) { |
| 1228 if (!tsa(tok, token_lbrace)) return false; | |
| 1229 while (true) { | |
| 1230 char *have = tok.next(); | |
| 1231 if (!have) break; | |
| 1232 if (have == token_rbrace) break; // done | |
| 1233 me.add_tld(have); | |
| 1234 } | |
| 1235 if (!tsa(tok, token_semi)) return false; | |
| 1236 } | |
| 1237 else if (have == token_html_limit) { | |
| 1238 have = tok.next(); | |
| 1239 if (have == token_on) { | |
| 1240 me.set_tag_limit(tok.nextint()); | |
| 1241 me.set_tag_message(tok.next()); | |
| 1242 } | |
| 1243 else if (have == token_off) { | |
| 1244 me.set_tag_limit(0); | |
| 1245 me.set_tag_message(NULL); | |
| 1246 } | |
| 1247 else { | |
| 1248 tok.token_error("on/off", have); | |
| 1249 return false; | |
| 1250 } | |
| 1251 if (!tsa(tok, token_semi)) return false; | |
| 1252 } | |
| 1253 else if (have == token_html_tags) { | |
| 1254 if (!tsa(tok, token_lbrace)) return false; | |
| 1255 while (true) { | |
| 1256 char *have = tok.next(); | |
| 1257 if (!have) break; | |
| 1258 if (have == token_rbrace) { | |
| 1259 break; // done | |
| 1260 } | |
| 1261 else { | |
| 1262 me.add_tag(have); // base version | |
| 1263 char buf[200]; | |
| 1264 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1265 me.add_tag(register_string(buf)); // leading / | |
| 1266 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1267 me.add_tag(register_string(buf)); // trailing / | |
| 1268 } | |
| 1269 } | |
| 1270 if (!tsa(tok, token_semi)) return false; | |
| 1271 } | |
| 1272 else if (have == token_host_limit) { | |
| 1273 have = tok.next(); | |
| 1274 if (have == token_on) { | |
| 1275 me.set_host_limit(tok.nextint()); | |
| 1276 me.set_host_message(tok.next()); | |
| 1277 me.set_host_random(false); | |
| 1278 } | |
| 1279 else if (have == token_off) { | |
| 1280 me.set_host_limit(0); | |
| 1281 me.set_host_message(NULL); | |
| 1282 me.set_host_random(false); | |
| 1283 } | |
| 1284 else if (have == token_soft) { | |
| 1285 me.set_host_limit(tok.nextint()); | |
| 1286 me.set_host_message(NULL); | |
| 1287 me.set_host_random(true); | |
| 1288 } | |
| 1289 else { | |
| 1290 tok.token_error("on/off/soft", have); | |
| 1291 return false; | |
| 1292 } | |
| 1293 if (!tsa(tok, token_semi)) return false; | |
| 1294 } | |
| 163 | 1295 else if (have == token_spamassassin) { |
| 1296 me.set_spamassassin_limit(tok.nextint()); | |
| 1297 if (!tsa(tok, token_semi)) return false; | |
| 1298 } | |
| 94 | 1299 else if (have == token_rbrace) { |
| 1300 break; // done | |
| 1301 } | |
| 1302 else { | |
| 1303 tok.token_error("content keyword", have); | |
| 1304 return false; | |
| 1305 } | |
| 1306 } | |
| 1307 return tsa(tok, token_semi); | |
| 1308 } | |
| 1309 | |
| 1310 | |
| 1311 //////////////////////////////////////////////// | |
| 1312 // | |
| 1313 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1314 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1315 if (!tsa(tok, token_lbrace)) return false; | |
| 1316 while (true) { | |
| 1317 char *have = tok.next(); | |
| 1318 if (!have) break; | |
| 1319 if (have == token_rbrace) break; | |
| 1320 if (have == token_semi) { | |
| 1321 // optional separators | |
| 1322 } | |
| 1323 else if (have == token_dccto) { | |
| 1324 char *flavor = tok.next(); | |
| 1325 if (!tsa(tok, token_lbrace)) return false; | |
| 1326 bool keeping = false; | |
| 1327 while (true) { | |
| 1328 char *have = tok.next(); | |
| 1329 if (!have) break; | |
| 1330 if (have == token_rbrace) break; | |
| 1331 if (have == flavor) { | |
| 1332 keeping = true; | |
| 1333 continue; | |
| 1334 } | |
| 1335 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1336 keeping = false; | |
| 1337 continue; | |
| 1338 } | |
| 1339 if (have == token_envto) { | |
| 1340 have = tok.next(); | |
| 1341 if (keeping) { | |
| 1342 if (me.allow_env_to(have)) { | |
| 1343 me.add_to(have); | |
| 1344 dc.add_to(have, &me); | |
| 1345 } | |
| 1346 } | |
| 1347 } | |
| 1348 //else if (have == token_substitute) { | |
| 1349 // if (tok.next() == token_mailhost) { | |
| 1350 // have = tok.next(); | |
| 1351 // if (keeping) { | |
| 1352 // if (me.allow_env_to(have)) { | |
| 1353 // me.add_to(have); | |
| 1354 // dc.add_to(have, &me); | |
| 1355 // } | |
| 1356 // } | |
| 1357 // } | |
| 1358 //} | |
| 1359 tok.skipeol(); | |
| 1360 } | |
| 1361 } | |
| 1362 else if (me.allow_env_to(have)) { | |
| 1363 me.add_to(have); | |
| 1364 dc.add_to(have, &me); | |
| 1365 } | |
| 1366 else { | |
| 1367 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1368 return false; | |
| 1369 } | |
| 1370 } | |
| 1371 return tsa(tok, token_semi); | |
| 1372 } | |
| 1373 | |
| 1374 | |
| 1375 //////////////////////////////////////////////// | |
| 1376 // | |
| 1377 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1378 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1379 char *host = tok.next(); | |
| 1380 if (!tsa(tok, token_semi)) return false; | |
| 1381 me.set_verify(host); | |
| 153 | 1382 me.set_verifier(add_verify_host(host)); |
| 1383 return true; | |
| 1384 } | |
| 1385 | |
| 1386 | |
| 1387 //////////////////////////////////////////////// | |
| 1388 // | |
| 168 | 1389 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1390 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1391 char *regx = tok.next(); | |
| 1392 char *msg = tok.next(); | |
| 1393 if (!tsa(tok, token_semi)) return false; | |
| 1394 if (me.set_generic(regx, msg)) { | |
| 1395 tok.token_error("invalid regular expression %s", regx, regx); | |
| 1396 return false; | |
| 1397 } | |
| 1398 return true; | |
| 1399 } | |
| 1400 | |
| 1401 | |
| 1402 //////////////////////////////////////////////// | |
| 1403 // | |
| 153 | 1404 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1405 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1406 int days = tok.nextint(); | |
| 1407 char *fn = tok.next(); | |
| 1408 if (!tsa(tok, token_semi)) return false; | |
| 1409 me.set_autowhite(fn); | |
| 1410 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1411 return true; |
| 94 | 1412 } |
| 1413 | |
| 1414 | |
| 1415 //////////////////////////////////////////////// | |
| 1416 // | |
| 1417 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1418 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1419 char *st = tok.next(); | |
| 1420 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1421 me.set_from_default(st); | |
| 1422 } | |
| 1423 else { | |
| 1424 tok.push(st); | |
| 1425 } | |
| 1426 if (!tsa(tok, token_lbrace)) return false; | |
| 1427 while (true) { | |
| 1428 char *have = tok.next(); | |
| 1429 if (!have) break; | |
| 1430 if (have == token_rbrace) break; | |
| 1431 if (have == token_semi) { | |
| 1432 // optional separators | |
| 1433 } | |
| 1434 else if (have == token_dccfrom) { | |
| 1435 if (!tsa(tok, token_lbrace)) return false; | |
| 1436 bool keeping = false; | |
| 1437 bool many = false; | |
| 1438 while (true) { | |
| 1439 char *have = tok.next(); | |
| 1440 if (!have) break; | |
| 1441 if (have == token_rbrace) break; | |
| 1442 if (have == token_ok) { | |
| 1443 keeping = true; | |
| 1444 many = false; | |
| 1445 continue; | |
| 1446 } | |
| 1447 else if (have == token_many) { | |
| 1448 keeping = true; | |
| 1449 many = true; | |
| 1450 continue; | |
| 1451 } | |
| 1452 else if (have == token_ok2) { | |
| 1453 keeping = false; | |
| 1454 continue; | |
| 1455 } | |
| 1456 if (have == token_envfrom) { | |
| 1457 have = tok.next(); | |
| 1458 if (keeping) { | |
| 1459 me.add_from(have, (many) ? token_black : token_white); | |
| 1460 } | |
| 1461 } | |
| 1462 else if (have == token_substitute) { | |
| 1463 if (tok.next() == token_mailhost) { | |
| 1464 have = tok.next(); | |
| 1465 me.add_from(have, (many) ? token_black : token_white); | |
| 1466 } | |
| 1467 } | |
| 1468 tok.skipeol(); | |
| 1469 } | |
| 1470 } | |
| 1471 else { | |
| 1472 // may be a valid email address or domain name | |
| 1473 char *st = tok.next(); | |
|
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1474 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1475 me.add_from(have, st); |
| 1476 } | |
| 1477 else { | |
| 1478 CONTEXTP con = me.find_from_context_name(st); | |
| 1479 if (con) { | |
| 1480 me.add_from_context(have, con); | |
| 1481 } | |
| 1482 else { | |
|
148
9330b8d6a56b
add documentation fixes, allow env_from target of inherit
carl
parents:
146
diff
changeset
|
1483 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1484 return false; |
| 1485 } | |
| 1486 } | |
| 1487 } | |
| 1488 } | |
| 1489 return tsa(tok, token_semi); | |
| 1490 } | |
| 1491 | |
| 1492 | |
| 1493 //////////////////////////////////////////////// | |
| 1494 // | |
| 136 | 1495 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1496 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1497 char *def = tok.next(); |
| 141 | 1498 tok.push(def); |
| 1499 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1500 if (!tsa(tok, token_lbrace)) return false; |
| 1501 while (true) { | |
| 1502 char *have = tok.next(); | |
| 1503 if (!have) break; | |
| 1504 if (have == token_rbrace) break; | |
| 1505 if (have == token_semi) { | |
| 1506 // optional separators | |
| 1507 } | |
| 1508 else { | |
| 140 | 1509 me.add_rate(have, tok.nextint()); |
| 136 | 1510 } |
| 1511 } | |
| 1512 return tsa(tok, token_semi); | |
| 1513 } | |
| 1514 | |
| 1515 | |
| 1516 //////////////////////////////////////////////// | |
| 1517 // | |
| 94 | 1518 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1519 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1520 char *name = tok.next(); | |
| 1521 if (!tsa(tok, token_lbrace)) return false; | |
| 1522 CONTEXTP con = new CONTEXT(parent, name); | |
| 1523 | |
| 1524 while (true) { | |
| 1525 char *have = tok.next(); | |
| 1526 if (!have) break; | |
| 1527 if (have == token_rbrace) break; // done | |
| 1528 if (have == token_dnsbl) { | |
| 1529 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1530 } | |
| 1531 else if (have == token_dnsbll) { | |
| 1532 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1533 } | |
| 1534 else if (have == token_content) { | |
| 1535 if (!parse_content(tok, dc, *con)) return false; | |
| 1536 } | |
| 1537 else if (have == token_envto) { | |
| 1538 if (!parse_envto(tok, dc, *con)) return false; | |
| 1539 } | |
| 1540 else if (have == token_verify) { | |
| 1541 if (!parse_verify(tok, dc, *con)) return false; | |
| 1542 } | |
| 168 | 1543 else if (have == token_generic) { |
| 1544 if (!parse_generic(tok, dc, *con)) return false; | |
| 1545 } | |
| 153 | 1546 else if (have == token_autowhite) { |
| 1547 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1548 } | |
| 94 | 1549 else if (have == token_envfrom) { |
| 1550 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1551 } | |
| 140 | 1552 else if (have == token_rate) { |
| 1553 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1554 if (!parse_rate(tok, dc, *con)) return false; |
| 1555 } | |
| 94 | 1556 else if (have == token_context) { |
| 1557 if (!parse_context(tok, dc, con)) return false; | |
| 1558 } | |
| 1559 else { | |
| 1560 tok.token_error("context keyword", have); | |
| 1561 return false; | |
| 1562 } | |
| 1563 } | |
| 1564 | |
| 1565 if (!tsa(tok, token_semi)) { | |
| 1566 delete con; | |
| 1567 return false; | |
| 1568 } | |
| 1569 dc.add_context(con); | |
| 1570 if (parent) parent->add_context(con); | |
| 1571 return true; | |
| 1572 } | |
| 1573 | |
| 1574 | |
| 1575 //////////////////////////////////////////////// | |
| 1576 // parse a config file | |
| 1577 // | |
| 1578 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1579 int count = 0; |
| 94 | 1580 TOKEN tok(fn, &dc.config_files); |
| 1581 while (true) { | |
| 1582 char *have = tok.next(); | |
| 1583 if (!have) break; | |
| 1584 if (have == token_context) { | |
| 1585 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1586 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1587 return false; |
| 1588 } | |
| 99 | 1589 else count++; |
| 94 | 1590 } |
| 1591 else { | |
| 1592 tok.token_error(token_context, have); | |
| 1593 return false; | |
| 1594 } | |
| 1595 } | |
| 99 | 1596 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1597 return (dc.default_context) ? true : false; |
| 1598 } | |
| 1599 | |
| 1600 | |
| 1601 //////////////////////////////////////////////// | |
| 1602 // init the tokens | |
| 1603 // | |
| 1604 void token_init() { | |
| 163 | 1605 token_autowhite = register_string("autowhite"); |
| 1606 token_black = register_string("black"); | |
| 1607 token_cctld = register_string("cctld"); | |
| 1608 token_content = register_string("content"); | |
| 1609 token_context = register_string("context"); | |
| 1610 token_dccfrom = register_string("dcc_from"); | |
| 1611 token_dccto = register_string("dcc_to"); | |
| 1612 token_default = register_string("default"); | |
| 1613 token_dnsbl = register_string("dnsbl"); | |
| 1614 token_dnsbll = register_string("dnsbl_list"); | |
| 1615 token_envfrom = register_string("env_from"); | |
| 1616 token_envto = register_string("env_to"); | |
| 1617 token_filter = register_string("filter"); | |
| 168 | 1618 token_generic = register_string("generic"); |
| 163 | 1619 token_host_limit = register_string("host_limit"); |
| 1620 token_html_limit = register_string("html_limit"); | |
| 1621 token_html_tags = register_string("html_tags"); | |
| 1622 token_ignore = register_string("ignore"); | |
| 1623 token_include = register_string("include"); | |
| 1624 token_inherit = register_string("inherit"); | |
| 1625 token_lbrace = register_string("{"); | |
| 1626 token_mailhost = register_string("mail_host"); | |
| 1627 token_many = register_string("many"); | |
| 1628 token_off = register_string("off"); | |
| 1629 token_ok = register_string("ok"); | |
| 1630 token_ok2 = register_string("ok2"); | |
| 1631 token_on = register_string("on"); | |
| 1632 token_rate = register_string("rate_limit"); | |
| 1633 token_rbrace = register_string("}"); | |
| 1634 token_semi = register_string(";"); | |
| 1635 token_soft = register_string("soft"); | |
| 1636 token_spamassassin = register_string("spamassassin"); | |
| 1637 token_substitute = register_string("substitute"); | |
| 1638 token_tld = register_string("tld"); | |
| 1639 token_unknown = register_string("unknown"); | |
| 1640 token_uribl = register_string("uribl"); | |
| 1641 token_verify = register_string("verify"); | |
| 1642 token_white = register_string("white"); | |
| 94 | 1643 |
| 1644 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1645 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1646 } | |
| 1647 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1648 token_myhostname = register_string(myhostname); | |
| 1649 } |