Mercurial > dnsbl
annotate src/context.cpp @ 173:83fe0be032c1 stable-6-0-9
fix leak, update timestamps when receiving auto-whitelisted sender
| author | carl |
|---|---|
| date | Thu, 06 Sep 2007 09:50:05 -0700 |
| parents | bd33eaccfed8 |
| children | da0c41b9f672 |
| 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 > 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; | |
| 154 | 501 ofs << who << " " << when << endl; |
| 153 | 502 } |
| 503 } | |
| 154 | 504 ofs.close(); |
| 156 | 505 need = false; |
| 160 | 506 loaded = time(NULL); // update load time |
| 153 | 507 } |
| 508 pthread_mutex_unlock(&mutex); | |
| 509 } | |
| 510 | |
| 511 | |
| 512 void WHITELISTER::sent(char *to) { | |
| 154 | 513 // we take ownership of the string |
| 153 | 514 pthread_mutex_lock(&mutex); |
| 515 need = true; | |
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516 autowhite_sent::iterator i = rcpts.find(to); |
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517 if (i == rcpts.end()) { |
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518 rcpts[to] = time(NULL); |
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519 } |
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520 else { |
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521 (*i).second = time(NULL); |
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522 free(to); |
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523 } |
| 153 | 524 pthread_mutex_unlock(&mutex); |
| 525 } | |
| 526 | |
| 527 | |
| 528 bool WHITELISTER::is_white(char *from) { | |
| 529 pthread_mutex_lock(&mutex); | |
| 530 autowhite_sent::iterator i = rcpts.find(from); | |
| 162 | 531 bool rc = (i != rcpts.end()); |
| 153 | 532 pthread_mutex_unlock(&mutex); |
| 533 return rc; | |
| 534 } | |
| 535 | |
| 536 | |
| 537 //////////////////////////////////////////////// | |
| 538 // setup a new auto whitelister file | |
| 539 // | |
| 540 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 541 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 542 WHITELISTERP rc = NULL; | |
| 543 pthread_mutex_lock(&whitelister_mutex); | |
| 544 whitelister_map::iterator i = whitelisters.find(fn); | |
| 545 if (i == whitelisters.end()) { | |
| 546 rc = new WHITELISTER(fn, days); | |
| 547 whitelisters[fn] = rc; | |
| 548 } | |
| 156 | 549 else { |
| 550 rc = (*i).second; | |
| 551 rc->set_days(days); | |
| 552 } | |
| 153 | 553 pthread_mutex_unlock(&whitelister_mutex); |
| 554 return rc; | |
| 555 } | |
| 556 | |
| 557 | |
| 558 //////////////////////////////////////////////// | |
| 559 // thread to check for whitelister hosts with old sockets that we can close | |
| 560 // | |
| 561 void* whitelister_writer(void *arg) { | |
| 562 while (true) { | |
| 563 sleep(maxauto_age); | |
| 564 pthread_mutex_lock(&whitelister_mutex); | |
| 565 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 566 WHITELISTERP v = (*i).second; | |
| 567 v->writer(); | |
| 568 } | |
| 569 pthread_mutex_unlock(&whitelister_mutex); | |
| 570 } | |
| 571 return NULL; | |
| 572 } | |
| 573 | |
| 574 | |
| 94 | 575 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 576 name = n; | |
| 577 suffix = s; | |
| 578 message = m; | |
| 579 } | |
| 580 | |
| 581 | |
| 582 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 583 return (strcmp(name, rhs.name) == 0) && | |
| 584 (strcmp(suffix, rhs.suffix) == 0) && | |
| 585 (strcmp(message, rhs.message) == 0); | |
| 586 } | |
| 587 | |
| 588 | |
| 589 CONFIG::CONFIG() { | |
| 590 reference_count = 0; | |
| 591 generation = 0; | |
| 592 load_time = 0; | |
| 593 default_context = NULL; | |
| 594 } | |
| 595 | |
| 596 | |
| 597 CONFIG::~CONFIG() { | |
| 146 | 598 if (debug_syslog) { |
| 599 char buf[maxlen]; | |
| 600 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 601 my_syslog(buf); | |
| 602 } | |
| 94 | 603 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 604 CONTEXT *c = *i; | |
| 605 delete c; | |
| 606 } | |
| 607 } | |
| 608 | |
| 609 | |
| 610 void CONFIG::add_context(CONTEXTP con) { | |
| 611 contexts.push_back(con); | |
| 612 if (!default_context && !con->get_parent()) { | |
| 613 // first global context | |
| 614 default_context = con; | |
| 615 } | |
| 616 } | |
| 617 | |
| 618 | |
| 619 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 620 context_map::iterator i = env_to.find(to); | |
| 621 if (i != env_to.end()) { | |
| 622 CONTEXTP c = (*i).second; | |
| 623 if ((c != con) && (c != con->get_parent())) { | |
| 624 if (debug_syslog) { | |
| 625 char oldname[maxlen]; | |
| 626 char newname[maxlen]; | |
| 627 char *oldn = c->get_full_name(oldname, maxlen); | |
| 628 char *newn = con->get_full_name(newname, maxlen); | |
| 629 char buf[maxlen*3]; | |
| 630 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 631 my_syslog(buf); | |
| 632 } | |
| 633 } | |
| 634 } | |
| 635 env_to[to] = con; | |
| 636 } | |
| 637 | |
| 638 | |
| 639 CONTEXTP CONFIG::find_context(char *to) { | |
| 640 context_map::iterator i = env_to.find(to); | |
| 117 | 641 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 642 char *x = strchr(to, '@'); |
| 643 if (x) { | |
| 644 x++; | |
| 645 i = env_to.find(x); | |
| 117 | 646 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 647 char y = *x; |
| 648 *x = '\0'; | |
| 649 i = env_to.find(to); | |
| 650 *x = y; | |
| 651 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 652 } | |
| 653 return default_context; | |
| 654 } | |
| 655 | |
| 656 | |
| 657 void CONFIG::dump() { | |
|
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658 bool spamass = false; |
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659 if (default_context) default_context->dump(true, spamass); |
| 94 | 660 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 661 CONTEXTP c = *i; | |
| 662 CONTEXTP p = c->get_parent(); | |
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663 if (!p && (c != default_context)) c->dump(false, spamass); |
| 94 | 664 } |
| 665 char buf[maxlen]; | |
| 666 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 667 char *to = (*i).first; | |
| 668 CONTEXTP con = (*i).second; | |
| 669 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 670 } | |
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671 if (spamass && (spamc == spamc_empty)) { |
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672 printf("// *** warning - spamassassin filtering requested, but spamc not found by autoconf.\n"); |
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673 } |
| 94 | 674 } |
| 675 | |
| 676 | |
| 677 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 678 parent = parent_; | |
| 679 name = name_; | |
| 680 verify_host = NULL; | |
| 153 | 681 verifier = NULL; |
| 168 | 682 generic_regx = NULL; |
| 683 generic_message = NULL; | |
| 153 | 684 autowhite_file = NULL; |
| 685 whitelister = NULL; | |
| 94 | 686 env_from_default = (parent) ? token_inherit : token_unknown; |
| 687 content_filtering = (parent) ? parent->content_filtering : false; | |
| 688 content_suffix = NULL; | |
| 689 content_message = NULL; | |
| 119 | 690 uribl_suffix = NULL; |
| 691 uribl_message = NULL; | |
| 94 | 692 host_limit = (parent) ? parent->host_limit : 0; |
| 693 host_limit_message = NULL; | |
| 694 host_random = (parent) ? parent->host_random : false; | |
| 695 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 696 tag_limit_message = NULL; | |
| 163 | 697 spamassassin_limit = (parent) ? parent->spamassassin_limit : 0; |
| 140 | 698 default_rcpt_rate = INT_MAX; |
| 94 | 699 } |
| 700 | |
| 701 | |
| 702 CONTEXT::~CONTEXT() { | |
| 703 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 704 DNSBLP d = (*i).second; | |
| 705 // delete the underlying DNSBL objects. | |
| 706 delete d; | |
| 707 } | |
| 170 | 708 if (generic_regx) regfree(&generic_pattern); |
| 94 | 709 } |
| 710 | |
| 711 | |
| 712 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 713 if (p == parent) return true; | |
| 714 if (!parent) return false; | |
| 715 return parent->is_parent(p); | |
| 716 } | |
| 717 | |
| 718 | |
| 719 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 720 if (!parent) return name; | |
| 721 char buf[maxlen]; | |
| 722 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 723 return buffer; | |
| 724 } | |
| 725 | |
| 726 | |
| 168 | 727 bool CONTEXT::set_generic(char *regx, char *msg) |
| 728 { | |
| 729 int rc = 0; | |
| 170 | 730 if (generic_regx) regfree(&generic_pattern); |
| 168 | 731 generic_regx = regx; |
| 732 generic_message = msg; | |
| 170 | 733 if (generic_regx) { |
| 168 | 734 rc = regcomp(&generic_pattern, regx, REG_NOSUB | REG_ICASE | REG_EXTENDED); |
| 735 } | |
| 736 return rc; // true iff bad pattern | |
| 737 } | |
| 738 | |
| 739 | |
| 740 char *CONTEXT::generic_match(char *client) | |
| 741 { | |
| 742 if (parent && !generic_regx) return parent->generic_match(client); | |
| 170 | 743 if (!generic_regx) return NULL; |
| 168 | 744 if (0 == regexec(&generic_pattern, client, 0, NULL, 0)) { |
| 745 return generic_message; | |
| 746 } | |
| 747 return NULL; | |
| 748 } | |
| 749 | |
| 750 | |
| 94 | 751 bool CONTEXT::cover_env_to(char *to) { |
| 752 char buffer[maxlen]; | |
| 753 char *x = strchr(to, '@'); | |
| 754 if (x) x++; | |
| 755 else x = to; | |
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756 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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757 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 758 string_set::iterator i = env_to.find(x); |
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759 if (i != env_to.end()) return true; // we cover the entire domain |
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760 if (x != to) { |
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761 i = env_to.find(to); |
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762 if (i != env_to.end()) return true; // we cover the specific email address |
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763 } |
| 94 | 764 return false; |
| 765 } | |
| 766 | |
| 767 | |
| 768 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 769 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 770 return verifier; | |
| 771 else if (parent) | |
| 772 return parent->find_verify(to); | |
| 773 else | |
| 774 return NULL; | |
| 775 } | |
| 94 | 776 |
| 153 | 777 |
| 162 | 778 WHITELISTERP CONTEXT::find_autowhite(char *from, char *to) { |
| 779 if (whitelister && cover_env_to(to) && !cover_env_to(from)) | |
| 153 | 780 return whitelister; |
| 781 else if (parent) | |
| 162 | 782 return parent->find_autowhite(from, to); |
| 153 | 783 else |
| 784 return NULL; | |
| 94 | 785 } |
| 786 | |
| 787 | |
| 136 | 788 int CONTEXT::find_rate(char *user) { |
| 140 | 789 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 790 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 791 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 792 } |
| 793 | |
| 794 | |
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795 char *CONTEXT::find_from(char *from, bool update_white) { |
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796 if (whitelister && whitelister->is_white(from)) { |
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797 if (update_white) { |
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798 // update senders timestamp to extend the whitelisting period |
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799 if (debug_syslog > 1) { |
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800 char buf[maxlen]; |
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801 char msg[maxlen]; |
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802 snprintf(msg, sizeof(msg), "extend whitelist reply from <%s> in context %s", from, get_full_name(buf,maxlen)); |
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803 my_syslog(msg); |
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804 } |
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805 whitelister->sent(strdup(from)); |
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806 } |
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807 return token_white; |
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808 } |
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809 char *rc = env_from_default; |
| 94 | 810 string_map::iterator i = env_from.find(from); |
| 117 | 811 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 812 else { |
| 813 char *x = strchr(from, '@'); | |
| 814 if (x) { | |
| 815 x++; | |
| 816 i = env_from.find(x); | |
| 117 | 817 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 818 else { |
| 819 char y = *x; | |
| 820 *x = '\0'; | |
| 821 i = env_from.find(from); | |
| 822 *x = y; | |
| 823 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 824 } | |
| 825 } | |
| 826 } | |
| 827 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 828 return (rc == token_inherit) ? token_unknown : rc; | |
| 829 } | |
| 830 | |
| 831 | |
| 832 CONTEXTP CONTEXT::find_context(char *from) { | |
| 833 context_map::iterator i = env_from_context.find(from); | |
| 117 | 834 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 835 char *x = strchr(from, '@'); |
| 836 if (x) { | |
| 837 x++; | |
| 838 i = env_from_context.find(x); | |
| 117 | 839 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 840 char y = *x; |
| 841 *x = '\0'; | |
| 842 i = env_from_context.find(from); | |
| 843 *x = y; | |
| 844 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 845 } | |
| 846 return this; | |
| 847 } | |
| 848 | |
| 849 | |
| 850 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 851 context_map::iterator i = children.find(name); | |
| 852 if (i != children.end()) return (*i).second; | |
| 853 return NULL; | |
| 854 } | |
| 855 | |
| 856 | |
| 857 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 858 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 859 if (i != dnsbl_names.end()) return (*i).second; | |
| 860 if (parent) return parent->find_dnsbl(name); | |
| 861 return NULL; | |
| 862 } | |
| 863 | |
| 864 | |
| 865 char* CONTEXT::get_content_suffix() { | |
| 866 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 867 return content_suffix; | |
| 868 } | |
| 869 | |
| 870 | |
| 119 | 871 char* CONTEXT::get_uribl_suffix() { |
| 872 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 873 return uribl_suffix; | |
| 874 } | |
| 875 | |
| 876 | |
| 94 | 877 char* CONTEXT::get_content_message() { |
| 878 if (!content_message && parent) return parent->get_content_message(); | |
| 879 return content_message; | |
| 880 } | |
| 881 | |
| 882 | |
| 119 | 883 char* CONTEXT::get_uribl_message() { |
| 884 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 885 return uribl_message; | |
| 886 } | |
| 887 | |
| 888 | |
| 94 | 889 string_set& CONTEXT::get_content_host_ignore() { |
| 890 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 891 return content_host_ignore; | |
| 892 } | |
| 893 | |
| 894 | |
| 117 | 895 string_set& CONTEXT::get_content_cctlds() { |
| 896 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 897 return content_cctlds; | |
| 898 } | |
| 899 | |
| 94 | 900 string_set& CONTEXT::get_content_tlds() { |
| 901 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 902 return content_tlds; | |
| 903 } | |
| 904 | |
| 905 | |
| 906 string_set& CONTEXT::get_html_tags() { | |
| 907 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 908 return html_tags; | |
| 909 } | |
| 910 | |
| 911 | |
| 912 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 913 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 914 return dnsbl_list; | |
| 915 } | |
| 916 | |
| 917 | |
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918 bool CONTEXT::acceptable_content(recorder &memory, int score, string& msg) { |
| 163 | 919 if (spamassassin_limit && (score > spamassassin_limit)) { |
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920 char buf[maxlen]; |
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921 snprintf(buf, sizeof(buf), "Mail rejected - spam assassin score %d", score); |
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922 msg = string(buf); |
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923 return false; |
| 163 | 924 } |
| 94 | 925 if (memory.excessive_bad_tags(tag_limit)) { |
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926 msg = string(tag_limit_message); |
| 94 | 927 return false; |
| 928 } | |
| 929 if (!host_random && memory.excessive_hosts(host_limit)) { | |
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930 msg = string(host_limit_message); |
| 94 | 931 return false; |
| 932 } | |
| 933 return true; | |
| 934 } | |
| 935 | |
| 936 | |
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937 void CONTEXT::dump(bool isdefault, bool &spamass, int level) { |
| 94 | 938 char indent[maxlen]; |
| 939 int i = min(maxlen-1, level*4); | |
| 940 memset(indent, ' ', i); | |
| 941 indent[i] = '\0'; | |
| 942 char buf[maxlen]; | |
| 943 char *fullname = get_full_name(buf,maxlen); | |
| 944 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 945 | |
| 946 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 947 char *n = (*i).first; | |
| 948 DNSBL &d = *(*i).second; | |
| 949 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 950 } | |
| 951 | |
| 145 | 952 dnsblp_list dl = get_dnsbl_list(); |
| 953 if (!dl.empty()) { | |
| 94 | 954 printf("%s dnsbl_list", indent); |
| 145 | 955 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 956 DNSBL &d = *(*i); |
| 957 printf(" %s", d.name); | |
| 958 } | |
| 959 printf("; \n"); | |
| 960 } | |
| 961 | |
| 962 if (content_filtering) { | |
| 963 printf("%s content on { \n", indent, env_from_default); | |
| 964 if (content_suffix) { | |
| 965 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 966 } | |
| 119 | 967 if (uribl_suffix) { |
| 968 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 969 } | |
| 94 | 970 if (!content_host_ignore.empty()) { |
| 971 printf("%s ignore { \n", indent); | |
| 972 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 973 printf("%s %s; \n", indent, *i); | |
| 974 } | |
| 975 printf("%s }; \n", indent); | |
| 976 } | |
| 117 | 977 if (!content_cctlds.empty()) { |
| 978 printf("%s cctld { \n", indent); | |
| 979 printf("%s ", indent); | |
| 980 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 981 printf("%s; ", *i); | |
| 982 } | |
| 983 printf("\n%s }; \n", indent); | |
| 984 } | |
| 94 | 985 if (!content_tlds.empty()) { |
| 986 printf("%s tld { \n", indent); | |
| 987 printf("%s ", indent); | |
| 988 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 989 printf("%s; ", *i); | |
| 990 } | |
| 991 printf("\n%s }; \n", indent); | |
| 992 } | |
| 993 if (!html_tags.empty()) { | |
| 994 printf("%s html_tags { \n", indent); | |
| 995 printf("%s ", indent); | |
| 996 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 997 printf("%s; ", *i); | |
| 998 } | |
| 999 printf("\n%s }; \n", indent); | |
| 1000 } | |
| 1001 if (host_limit_message) { | |
| 1002 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 1003 } | |
| 1004 else if (host_random) { | |
| 1005 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 1006 } | |
| 1007 else { | |
| 1008 printf("%s host_limit off; \n", indent); | |
| 1009 } | |
| 1010 if (tag_limit_message) { | |
| 1011 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 1012 } | |
| 1013 else { | |
| 1014 printf("%s html_limit off; \n", indent); | |
| 1015 } | |
| 163 | 1016 printf("%s spamassassin %d; \n", indent, spamassassin_limit); |
| 94 | 1017 printf("%s }; \n", indent); |
|
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1018 spamass |= (spamassassin_limit != 0); |
| 94 | 1019 } |
| 1020 else { | |
| 1021 printf("%s content off {}; \n", indent, env_from_default); | |
| 1022 } | |
| 1023 | |
| 1024 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 1025 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 1026 printf("%s %s; \n", indent, *i); | |
| 1027 } | |
| 1028 printf("%s }; \n", indent); | |
| 1029 | |
| 1030 if (verify_host) { | |
| 1031 printf("%s verify %s; \n", indent, verify_host); | |
| 1032 } | |
| 1033 | |
| 168 | 1034 if (generic_regx) { |
| 1035 printf("%s generic \"%s\" \n", indent, generic_regx); | |
| 1036 printf("%s \"%s\"; \n", indent, generic_message); | |
| 1037 } | |
| 1038 | |
| 153 | 1039 if (autowhite_file && whitelister) { |
| 1040 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 1041 } | |
| 1042 | |
| 94 | 1043 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 1044 CONTEXTP c = (*i).second; | |
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1045 c->dump(false, spamass, level+1); |
| 94 | 1046 } |
| 1047 | |
| 1048 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 1049 if (!env_from.empty()) { | |
| 1050 printf("%s // white/black/unknown \n", indent); | |
| 1051 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 1052 char *f = (*i).first; | |
| 1053 char *t = (*i).second; | |
| 1054 printf("%s %s \t%s; \n", indent, f, t); | |
| 1055 } | |
| 1056 } | |
| 1057 if (!env_from_context.empty()) { | |
| 1058 printf("%s // child contexts \n", indent); | |
| 1059 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 1060 char *f = (*j).first; | |
| 1061 CONTEXTP t = (*j).second; | |
| 1062 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 1063 } | |
| 1064 } | |
| 1065 printf("%s }; \n", indent); | |
| 1066 | |
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1067 if (isdefault) { |
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1068 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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1069 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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1070 char *u = (*j).first; |
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1071 int l = (*j).second; |
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1072 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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1073 } |
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1074 printf("%s }; \n", indent); |
| 136 | 1075 } |
| 1076 | |
| 94 | 1077 printf("%s }; \n", indent); |
| 1078 } | |
| 1079 | |
| 1080 | |
| 1081 //////////////////////////////////////////////// | |
| 1082 // helper to discard the strings held by a string_set | |
| 1083 // | |
| 1084 void discard(string_set &s) { | |
| 1085 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 1086 free(*i); | |
| 1087 } | |
| 1088 s.clear(); | |
| 1089 } | |
| 1090 | |
| 1091 | |
| 1092 //////////////////////////////////////////////// | |
| 1093 // helper to register a string in a string set | |
| 1094 // | |
| 1095 char* register_string(string_set &s, char *name) { | |
| 1096 string_set::iterator i = s.find(name); | |
| 1097 if (i != s.end()) return *i; | |
| 1098 char *x = strdup(name); | |
| 1099 s.insert(x); | |
| 1100 return x; | |
| 1101 } | |
| 1102 | |
| 1103 | |
| 1104 //////////////////////////////////////////////// | |
| 1105 // register a global string | |
| 1106 // | |
| 1107 char* register_string(char *name) { | |
| 1108 return register_string(all_strings, name); | |
| 1109 } | |
| 1110 | |
| 1111 | |
| 1112 //////////////////////////////////////////////// | |
| 164 | 1113 // clear all global strings, helper for valgrind checking |
| 1114 // | |
| 1115 void clear_strings() { | |
| 1116 discard(all_strings); | |
| 1117 } | |
| 1118 | |
| 1119 | |
| 1120 //////////////////////////////////////////////// | |
| 94 | 1121 // |
| 1122 bool tsa(TOKEN &tok, char *token); | |
| 1123 bool tsa(TOKEN &tok, char *token) { | |
| 1124 char *have = tok.next(); | |
| 1125 if (have == token) return true; | |
| 1126 tok.token_error(token, have); | |
| 1127 return false; | |
| 1128 } | |
| 1129 | |
| 1130 | |
| 1131 //////////////////////////////////////////////// | |
| 1132 // | |
| 1133 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1134 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1135 char *name = tok.next(); | |
| 1136 char *suf = tok.next(); | |
| 1137 char *msg = tok.next(); | |
| 1138 if (!tsa(tok, token_semi)) return false; | |
| 1139 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1140 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1141 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1142 // duplicate redefinition, ignore it | |
| 1143 delete dnsnew; | |
| 1144 return true; | |
| 1145 } | |
| 1146 me.add_dnsbl(name, dnsnew); | |
| 1147 return true; | |
| 1148 } | |
| 1149 | |
| 1150 | |
| 1151 //////////////////////////////////////////////// | |
| 1152 // | |
| 1153 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1154 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1155 while (true) { | |
| 1156 char *have = tok.next(); | |
| 1157 if (!have) break; | |
| 1158 if (have == token_semi) break; | |
| 1159 DNSBLP dns = me.find_dnsbl(have); | |
| 1160 if (dns) { | |
| 1161 me.add_dnsbl(dns); | |
| 1162 } | |
| 1163 else { | |
| 1164 tok.token_error("dnsbl name", have); | |
| 1165 return false; | |
| 1166 } | |
| 1167 } | |
| 1168 return true; | |
| 1169 } | |
| 1170 | |
| 1171 | |
| 1172 //////////////////////////////////////////////// | |
| 1173 // | |
| 1174 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1175 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1176 char *setting = tok.next(); | |
| 1177 if (setting == token_on) { | |
| 1178 me.set_content_filtering(true); | |
| 1179 } | |
| 1180 else if (setting == token_off) { | |
| 1181 me.set_content_filtering(false); | |
| 1182 } | |
| 1183 else { | |
| 1184 tok.token_error("on/off", setting); | |
| 1185 return false; | |
| 1186 } | |
| 1187 if (!tsa(tok, token_lbrace)) return false; | |
| 1188 while (true) { | |
| 1189 char *have = tok.next(); | |
| 1190 if (!have) break; | |
| 1191 if (have == token_filter) { | |
| 1192 char *suffix = tok.next(); | |
| 1193 char *messag = tok.next(); | |
| 1194 me.set_content_suffix(suffix); | |
| 1195 me.set_content_message(messag); | |
| 1196 if (!tsa(tok, token_semi)) return false; | |
| 1197 } | |
| 119 | 1198 else if (have == token_uribl) { |
| 1199 char *suffix = tok.next(); | |
| 1200 char *messag = tok.next(); | |
| 1201 me.set_uribl_suffix(suffix); | |
| 1202 me.set_uribl_message(messag); | |
| 1203 if (!tsa(tok, token_semi)) return false; | |
| 1204 } | |
| 94 | 1205 else if (have == token_ignore) { |
| 1206 if (!tsa(tok, token_lbrace)) return false; | |
| 1207 while (true) { | |
| 1208 if (!have) break; | |
| 1209 char *have = tok.next(); | |
| 1210 if (have == token_rbrace) break; // done | |
| 1211 me.add_ignore(have); | |
| 1212 } | |
| 1213 if (!tsa(tok, token_semi)) return false; | |
| 1214 } | |
| 117 | 1215 else if (have == token_cctld) { |
| 1216 if (!tsa(tok, token_lbrace)) return false; | |
| 1217 while (true) { | |
| 1218 char *have = tok.next(); | |
| 1219 if (!have) break; | |
| 1220 if (have == token_rbrace) break; // done | |
| 1221 me.add_cctld(have); | |
| 1222 } | |
| 1223 if (!tsa(tok, token_semi)) return false; | |
| 1224 } | |
| 94 | 1225 else if (have == token_tld) { |
| 1226 if (!tsa(tok, token_lbrace)) return false; | |
| 1227 while (true) { | |
| 1228 char *have = tok.next(); | |
| 1229 if (!have) break; | |
| 1230 if (have == token_rbrace) break; // done | |
| 1231 me.add_tld(have); | |
| 1232 } | |
| 1233 if (!tsa(tok, token_semi)) return false; | |
| 1234 } | |
| 1235 else if (have == token_html_limit) { | |
| 1236 have = tok.next(); | |
| 1237 if (have == token_on) { | |
| 1238 me.set_tag_limit(tok.nextint()); | |
| 1239 me.set_tag_message(tok.next()); | |
| 1240 } | |
| 1241 else if (have == token_off) { | |
| 1242 me.set_tag_limit(0); | |
| 1243 me.set_tag_message(NULL); | |
| 1244 } | |
| 1245 else { | |
| 1246 tok.token_error("on/off", have); | |
| 1247 return false; | |
| 1248 } | |
| 1249 if (!tsa(tok, token_semi)) return false; | |
| 1250 } | |
| 1251 else if (have == token_html_tags) { | |
| 1252 if (!tsa(tok, token_lbrace)) return false; | |
| 1253 while (true) { | |
| 1254 char *have = tok.next(); | |
| 1255 if (!have) break; | |
| 1256 if (have == token_rbrace) { | |
| 1257 break; // done | |
| 1258 } | |
| 1259 else { | |
| 1260 me.add_tag(have); // base version | |
| 1261 char buf[200]; | |
| 1262 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1263 me.add_tag(register_string(buf)); // leading / | |
| 1264 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1265 me.add_tag(register_string(buf)); // trailing / | |
| 1266 } | |
| 1267 } | |
| 1268 if (!tsa(tok, token_semi)) return false; | |
| 1269 } | |
| 1270 else if (have == token_host_limit) { | |
| 1271 have = tok.next(); | |
| 1272 if (have == token_on) { | |
| 1273 me.set_host_limit(tok.nextint()); | |
| 1274 me.set_host_message(tok.next()); | |
| 1275 me.set_host_random(false); | |
| 1276 } | |
| 1277 else if (have == token_off) { | |
| 1278 me.set_host_limit(0); | |
| 1279 me.set_host_message(NULL); | |
| 1280 me.set_host_random(false); | |
| 1281 } | |
| 1282 else if (have == token_soft) { | |
| 1283 me.set_host_limit(tok.nextint()); | |
| 1284 me.set_host_message(NULL); | |
| 1285 me.set_host_random(true); | |
| 1286 } | |
| 1287 else { | |
| 1288 tok.token_error("on/off/soft", have); | |
| 1289 return false; | |
| 1290 } | |
| 1291 if (!tsa(tok, token_semi)) return false; | |
| 1292 } | |
| 163 | 1293 else if (have == token_spamassassin) { |
| 1294 me.set_spamassassin_limit(tok.nextint()); | |
| 1295 if (!tsa(tok, token_semi)) return false; | |
| 1296 } | |
| 94 | 1297 else if (have == token_rbrace) { |
| 1298 break; // done | |
| 1299 } | |
| 1300 else { | |
| 1301 tok.token_error("content keyword", have); | |
| 1302 return false; | |
| 1303 } | |
| 1304 } | |
| 1305 return tsa(tok, token_semi); | |
| 1306 } | |
| 1307 | |
| 1308 | |
| 1309 //////////////////////////////////////////////// | |
| 1310 // | |
| 1311 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1312 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1313 if (!tsa(tok, token_lbrace)) return false; | |
| 1314 while (true) { | |
| 1315 char *have = tok.next(); | |
| 1316 if (!have) break; | |
| 1317 if (have == token_rbrace) break; | |
| 1318 if (have == token_semi) { | |
| 1319 // optional separators | |
| 1320 } | |
| 1321 else if (have == token_dccto) { | |
| 1322 char *flavor = tok.next(); | |
| 1323 if (!tsa(tok, token_lbrace)) return false; | |
| 1324 bool keeping = false; | |
| 1325 while (true) { | |
| 1326 char *have = tok.next(); | |
| 1327 if (!have) break; | |
| 1328 if (have == token_rbrace) break; | |
| 1329 if (have == flavor) { | |
| 1330 keeping = true; | |
| 1331 continue; | |
| 1332 } | |
| 1333 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1334 keeping = false; | |
| 1335 continue; | |
| 1336 } | |
| 1337 if (have == token_envto) { | |
| 1338 have = tok.next(); | |
| 1339 if (keeping) { | |
| 1340 if (me.allow_env_to(have)) { | |
| 1341 me.add_to(have); | |
| 1342 dc.add_to(have, &me); | |
| 1343 } | |
| 1344 } | |
| 1345 } | |
| 1346 //else if (have == token_substitute) { | |
| 1347 // if (tok.next() == token_mailhost) { | |
| 1348 // have = tok.next(); | |
| 1349 // if (keeping) { | |
| 1350 // if (me.allow_env_to(have)) { | |
| 1351 // me.add_to(have); | |
| 1352 // dc.add_to(have, &me); | |
| 1353 // } | |
| 1354 // } | |
| 1355 // } | |
| 1356 //} | |
| 1357 tok.skipeol(); | |
| 1358 } | |
| 1359 } | |
| 1360 else if (me.allow_env_to(have)) { | |
| 1361 me.add_to(have); | |
| 1362 dc.add_to(have, &me); | |
| 1363 } | |
| 1364 else { | |
| 1365 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1366 return false; | |
| 1367 } | |
| 1368 } | |
| 1369 return tsa(tok, token_semi); | |
| 1370 } | |
| 1371 | |
| 1372 | |
| 1373 //////////////////////////////////////////////// | |
| 1374 // | |
| 1375 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1376 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1377 char *host = tok.next(); | |
| 1378 if (!tsa(tok, token_semi)) return false; | |
| 1379 me.set_verify(host); | |
| 153 | 1380 me.set_verifier(add_verify_host(host)); |
| 1381 return true; | |
| 1382 } | |
| 1383 | |
| 1384 | |
| 1385 //////////////////////////////////////////////// | |
| 1386 // | |
| 168 | 1387 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1388 bool parse_generic(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1389 char *regx = tok.next(); | |
| 1390 char *msg = tok.next(); | |
| 1391 if (!tsa(tok, token_semi)) return false; | |
| 1392 if (me.set_generic(regx, msg)) { | |
| 1393 tok.token_error("invalid regular expression %s", regx, regx); | |
| 1394 return false; | |
| 1395 } | |
| 1396 return true; | |
| 1397 } | |
| 1398 | |
| 1399 | |
| 1400 //////////////////////////////////////////////// | |
| 1401 // | |
| 153 | 1402 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1403 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1404 int days = tok.nextint(); | |
| 1405 char *fn = tok.next(); | |
| 1406 if (!tsa(tok, token_semi)) return false; | |
| 1407 me.set_autowhite(fn); | |
| 1408 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1409 return true; |
| 94 | 1410 } |
| 1411 | |
| 1412 | |
| 1413 //////////////////////////////////////////////// | |
| 1414 // | |
| 1415 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1416 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1417 char *st = tok.next(); | |
| 1418 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1419 me.set_from_default(st); | |
| 1420 } | |
| 1421 else { | |
| 1422 tok.push(st); | |
| 1423 } | |
| 1424 if (!tsa(tok, token_lbrace)) return false; | |
| 1425 while (true) { | |
| 1426 char *have = tok.next(); | |
| 1427 if (!have) break; | |
| 1428 if (have == token_rbrace) break; | |
| 1429 if (have == token_semi) { | |
| 1430 // optional separators | |
| 1431 } | |
| 1432 else if (have == token_dccfrom) { | |
| 1433 if (!tsa(tok, token_lbrace)) return false; | |
| 1434 bool keeping = false; | |
| 1435 bool many = false; | |
| 1436 while (true) { | |
| 1437 char *have = tok.next(); | |
| 1438 if (!have) break; | |
| 1439 if (have == token_rbrace) break; | |
| 1440 if (have == token_ok) { | |
| 1441 keeping = true; | |
| 1442 many = false; | |
| 1443 continue; | |
| 1444 } | |
| 1445 else if (have == token_many) { | |
| 1446 keeping = true; | |
| 1447 many = true; | |
| 1448 continue; | |
| 1449 } | |
| 1450 else if (have == token_ok2) { | |
| 1451 keeping = false; | |
| 1452 continue; | |
| 1453 } | |
| 1454 if (have == token_envfrom) { | |
| 1455 have = tok.next(); | |
| 1456 if (keeping) { | |
| 1457 me.add_from(have, (many) ? token_black : token_white); | |
| 1458 } | |
| 1459 } | |
| 1460 else if (have == token_substitute) { | |
| 1461 if (tok.next() == token_mailhost) { | |
| 1462 have = tok.next(); | |
| 1463 me.add_from(have, (many) ? token_black : token_white); | |
| 1464 } | |
| 1465 } | |
| 1466 tok.skipeol(); | |
| 1467 } | |
| 1468 } | |
| 1469 else { | |
| 1470 // may be a valid email address or domain name | |
| 1471 char *st = tok.next(); | |
|
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1472 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1473 me.add_from(have, st); |
| 1474 } | |
| 1475 else { | |
| 1476 CONTEXTP con = me.find_from_context_name(st); | |
| 1477 if (con) { | |
| 1478 me.add_from_context(have, con); | |
| 1479 } | |
| 1480 else { | |
|
148
9330b8d6a56b
add documentation fixes, allow env_from target of inherit
carl
parents:
146
diff
changeset
|
1481 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1482 return false; |
| 1483 } | |
| 1484 } | |
| 1485 } | |
| 1486 } | |
| 1487 return tsa(tok, token_semi); | |
| 1488 } | |
| 1489 | |
| 1490 | |
| 1491 //////////////////////////////////////////////// | |
| 1492 // | |
| 136 | 1493 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1494 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1495 char *def = tok.next(); |
| 141 | 1496 tok.push(def); |
| 1497 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1498 if (!tsa(tok, token_lbrace)) return false; |
| 1499 while (true) { | |
| 1500 char *have = tok.next(); | |
| 1501 if (!have) break; | |
| 1502 if (have == token_rbrace) break; | |
| 1503 if (have == token_semi) { | |
| 1504 // optional separators | |
| 1505 } | |
| 1506 else { | |
| 140 | 1507 me.add_rate(have, tok.nextint()); |
| 136 | 1508 } |
| 1509 } | |
| 1510 return tsa(tok, token_semi); | |
| 1511 } | |
| 1512 | |
| 1513 | |
| 1514 //////////////////////////////////////////////// | |
| 1515 // | |
| 94 | 1516 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1517 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1518 char *name = tok.next(); | |
| 1519 if (!tsa(tok, token_lbrace)) return false; | |
| 1520 CONTEXTP con = new CONTEXT(parent, name); | |
| 1521 | |
| 1522 while (true) { | |
| 1523 char *have = tok.next(); | |
| 1524 if (!have) break; | |
| 1525 if (have == token_rbrace) break; // done | |
| 1526 if (have == token_dnsbl) { | |
| 1527 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1528 } | |
| 1529 else if (have == token_dnsbll) { | |
| 1530 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1531 } | |
| 1532 else if (have == token_content) { | |
| 1533 if (!parse_content(tok, dc, *con)) return false; | |
| 1534 } | |
| 1535 else if (have == token_envto) { | |
| 1536 if (!parse_envto(tok, dc, *con)) return false; | |
| 1537 } | |
| 1538 else if (have == token_verify) { | |
| 1539 if (!parse_verify(tok, dc, *con)) return false; | |
| 1540 } | |
| 168 | 1541 else if (have == token_generic) { |
| 1542 if (!parse_generic(tok, dc, *con)) return false; | |
| 1543 } | |
| 153 | 1544 else if (have == token_autowhite) { |
| 1545 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1546 } | |
| 94 | 1547 else if (have == token_envfrom) { |
| 1548 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1549 } | |
| 140 | 1550 else if (have == token_rate) { |
| 1551 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1552 if (!parse_rate(tok, dc, *con)) return false; |
| 1553 } | |
| 94 | 1554 else if (have == token_context) { |
| 1555 if (!parse_context(tok, dc, con)) return false; | |
| 1556 } | |
| 1557 else { | |
| 1558 tok.token_error("context keyword", have); | |
| 1559 return false; | |
| 1560 } | |
| 1561 } | |
| 1562 | |
| 1563 if (!tsa(tok, token_semi)) { | |
| 1564 delete con; | |
| 1565 return false; | |
| 1566 } | |
| 1567 dc.add_context(con); | |
| 1568 if (parent) parent->add_context(con); | |
| 1569 return true; | |
| 1570 } | |
| 1571 | |
| 1572 | |
| 1573 //////////////////////////////////////////////// | |
| 1574 // parse a config file | |
| 1575 // | |
| 1576 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1577 int count = 0; |
| 94 | 1578 TOKEN tok(fn, &dc.config_files); |
| 1579 while (true) { | |
| 1580 char *have = tok.next(); | |
| 1581 if (!have) break; | |
| 1582 if (have == token_context) { | |
| 1583 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1584 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1585 return false; |
| 1586 } | |
| 99 | 1587 else count++; |
| 94 | 1588 } |
| 1589 else { | |
| 1590 tok.token_error(token_context, have); | |
| 1591 return false; | |
| 1592 } | |
| 1593 } | |
| 99 | 1594 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1595 return (dc.default_context) ? true : false; |
| 1596 } | |
| 1597 | |
| 1598 | |
| 1599 //////////////////////////////////////////////// | |
| 1600 // init the tokens | |
| 1601 // | |
| 1602 void token_init() { | |
| 163 | 1603 token_autowhite = register_string("autowhite"); |
| 1604 token_black = register_string("black"); | |
| 1605 token_cctld = register_string("cctld"); | |
| 1606 token_content = register_string("content"); | |
| 1607 token_context = register_string("context"); | |
| 1608 token_dccfrom = register_string("dcc_from"); | |
| 1609 token_dccto = register_string("dcc_to"); | |
| 1610 token_default = register_string("default"); | |
| 1611 token_dnsbl = register_string("dnsbl"); | |
| 1612 token_dnsbll = register_string("dnsbl_list"); | |
| 1613 token_envfrom = register_string("env_from"); | |
| 1614 token_envto = register_string("env_to"); | |
| 1615 token_filter = register_string("filter"); | |
| 168 | 1616 token_generic = register_string("generic"); |
| 163 | 1617 token_host_limit = register_string("host_limit"); |
| 1618 token_html_limit = register_string("html_limit"); | |
| 1619 token_html_tags = register_string("html_tags"); | |
| 1620 token_ignore = register_string("ignore"); | |
| 1621 token_include = register_string("include"); | |
| 1622 token_inherit = register_string("inherit"); | |
| 1623 token_lbrace = register_string("{"); | |
| 1624 token_mailhost = register_string("mail_host"); | |
| 1625 token_many = register_string("many"); | |
| 1626 token_off = register_string("off"); | |
| 1627 token_ok = register_string("ok"); | |
| 1628 token_ok2 = register_string("ok2"); | |
| 1629 token_on = register_string("on"); | |
| 1630 token_rate = register_string("rate_limit"); | |
| 1631 token_rbrace = register_string("}"); | |
| 1632 token_semi = register_string(";"); | |
| 1633 token_soft = register_string("soft"); | |
| 1634 token_spamassassin = register_string("spamassassin"); | |
| 1635 token_substitute = register_string("substitute"); | |
| 1636 token_tld = register_string("tld"); | |
| 1637 token_unknown = register_string("unknown"); | |
| 1638 token_uribl = register_string("uribl"); | |
| 1639 token_verify = register_string("verify"); | |
| 1640 token_white = register_string("white"); | |
| 94 | 1641 |
| 1642 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1643 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1644 } | |
| 1645 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1646 token_myhostname = register_string(myhostname); | |
| 1647 } |