Mercurial > dnsbl
annotate src/context.cpp @ 154:89ce226e5383
add auto whitelisting
| author | carl |
|---|---|
| date | Sat, 07 Jul 2007 21:24:38 -0700 |
| parents | 8d7c439bb6fa |
| children | a220bfb9211f |
| 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 | |
| 11 // needed for socket io | |
|
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12 #include <unistd.h> |
| 94 | 13 #include <sys/ioctl.h> |
| 14 #include <net/if.h> | |
| 15 #include <arpa/inet.h> | |
| 16 #include <netinet/in.h> | |
| 17 #include <netinet/tcp.h> | |
| 18 #include <netdb.h> | |
| 19 #include <sys/socket.h> | |
| 20 #include <sys/un.h> | |
| 21 | |
| 22 static char* context_version="$Id$"; | |
| 23 | |
| 153 | 24 char *token_autowhite; |
| 94 | 25 char *token_black; |
| 26 char *token_content; | |
| 27 char *token_context; | |
| 28 char *token_dccfrom; | |
| 29 char *token_dccto; | |
| 30 char *token_default; | |
| 31 char *token_dnsbl; | |
| 32 char *token_dnsbll; | |
| 33 char *token_envfrom; | |
| 34 char *token_envto; | |
| 35 char *token_filter; | |
| 36 char *token_host_limit; | |
| 37 char *token_html_limit; | |
| 38 char *token_html_tags; | |
| 39 char *token_ignore; | |
| 40 char *token_include; | |
| 41 char *token_inherit; | |
| 42 char *token_lbrace; | |
| 43 char *token_mailhost; | |
| 44 char *token_many; | |
| 45 char *token_off; | |
| 46 char *token_ok2; | |
| 47 char *token_ok; | |
| 48 char *token_on; | |
| 136 | 49 char *token_rate; |
| 94 | 50 char *token_rbrace; |
| 51 char *token_semi; | |
| 52 char *token_soft; | |
| 53 char *token_substitute; | |
| 54 char *token_tld; | |
| 117 | 55 char *token_cctld; |
| 94 | 56 char *token_unknown; |
| 119 | 57 char *token_uribl; |
| 94 | 58 char *token_verify; |
| 59 char *token_white; | |
| 60 | |
| 61 char *token_myhostname; | |
|
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62 #ifndef HOST_NAME_MAX |
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63 #define HOST_NAME_MAX 255 |
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64 #endif |
| 94 | 65 char myhostname[HOST_NAME_MAX+1]; |
| 66 | |
| 153 | 67 pthread_mutex_t verifier_mutex; // protect the verifier map |
| 94 | 68 verify_map verifiers; |
| 153 | 69 |
| 70 pthread_mutex_t whitelister_mutex; // protect the | |
| 71 whitelister_map whitelisters; | |
| 72 | |
| 94 | 73 string_set all_strings; // owns all the strings, only modified by the config loader thread |
| 74 const int maxlen = 1000; // used for snprintf buffers | |
| 153 | 75 const int maxsmtp_age = 120;// smtp verify sockets older than this are ancient |
| 76 const int maxauto_age = 600;// auto whitelister delay before flushing to file | |
| 94 | 77 extern int NULL_SOCKET; |
|
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78 const time_t ERROR_SMTP_SOCKET_TIME = 600; // number of seconds between attempts to open a socket to an smtp server |
| 94 | 79 |
| 80 | |
| 81 int SMTP::writer() { | |
| 82 #ifdef VERIFY_DEBUG | |
| 83 log("writer() sees buffer with %s", buffer); | |
| 84 log("writer() sees error %d", (int)error); | |
| 85 #endif | |
| 86 int rs = 0; | |
| 87 if (!error) { | |
| 88 int len = strlen(buffer); | |
| 89 while (rs < len) { | |
| 90 int ws = write(fd, buffer+rs, len-rs); | |
| 91 if (ws > 0) { | |
| 92 rs += ws; | |
| 93 } | |
| 94 else { | |
| 95 // peer closed the socket! | |
| 96 rs = 0; | |
| 97 error = true; | |
| 98 break; | |
| 99 } | |
| 100 } | |
| 101 } | |
| 102 return rs; | |
| 103 } | |
| 104 | |
| 105 | |
| 106 int SMTP::reader() { | |
| 107 // read some bytes terminated by lf or end of buffer. | |
| 108 // we may have a multi line response or part thereof in the buffer. | |
| 109 #ifdef VERIFY_DEBUG | |
| 110 log("reader() sees error %d", (int)error); | |
| 111 #endif | |
| 112 if (error) return 0; | |
| 113 int len = maxlen-1; // room for null terminator | |
| 114 while (pending < len) { | |
| 115 int ws = read(fd, buffer+pending, len-pending); | |
| 116 if (ws > 0) { | |
| 117 pending += ws; | |
| 118 if (buffer[pending-1] == '\n') break; | |
| 119 } | |
| 120 else { | |
| 121 // peer closed the socket! | |
| 122 pending = 0; | |
| 123 error = true; | |
| 124 break; | |
| 125 } | |
| 126 } | |
| 127 buffer[pending] = '\0'; | |
| 128 #ifdef VERIFY_DEBUG | |
| 129 log("reader() sees buffer with %s", buffer); | |
| 130 #endif | |
| 131 return pending; | |
| 132 } | |
| 133 | |
| 134 | |
| 135 int SMTP::read_line() { | |
| 136 char *lf = strchr(buffer, '\n'); | |
| 137 if (!lf) { | |
| 138 reader(); // get a lf | |
| 139 lf = strchr(buffer, '\n'); | |
| 140 if (!lf) lf = buffer + pending - 1; | |
| 141 } | |
| 142 return (lf-buffer)+1; // number of bytes in this line | |
| 143 } | |
| 144 | |
| 145 | |
| 97 | 146 void SMTP::flush_line(int r) { |
| 94 | 147 if (pending > r) memmove(buffer, buffer+r, pending-r); |
| 148 pending -= r; | |
| 149 } | |
| 150 | |
| 151 | |
| 152 int SMTP::read_response() { | |
| 153 pending = 0; | |
| 154 buffer[pending] = '\0'; | |
| 155 while (true) { | |
| 156 int r = read_line(); | |
| 157 #ifdef VERIFY_DEBUG | |
| 158 log("read_response() sees line with %s", buffer); | |
| 159 log("read_response() sees line length %d", r); | |
| 160 #endif | |
| 161 if (r == 0) return 0; // failed to read any bytes | |
| 162 if ((r > 4) && (buffer[3] == '-')) { | |
| 163 flush_line(r); | |
| 164 continue; | |
| 165 } | |
| 166 return atoi(buffer); | |
| 167 } | |
| 168 return 0; | |
| 169 } | |
| 170 | |
| 171 | |
| 172 int SMTP::cmd(char *c) { | |
| 173 if (c) { | |
| 174 init(); | |
| 175 append(c); | |
| 176 } | |
| 177 append("\r\n"); | |
| 178 writer(); | |
| 179 return read_response(); | |
| 180 } | |
| 181 | |
| 182 | |
| 183 int SMTP::helo() { | |
| 184 if (read_response() != 220) return 0; | |
| 185 init(); | |
| 186 append("HELO "); | |
| 187 append(token_myhostname); | |
| 188 return cmd(NULL); | |
| 189 } | |
| 190 | |
| 191 | |
| 192 int SMTP::rset() { | |
| 193 int rc = cmd("RSET"); | |
| 194 efrom[0] = '\0'; | |
| 195 return rc; | |
| 196 } | |
| 197 | |
| 198 | |
| 199 int SMTP::from(char *f) { | |
| 101 | 200 // the mail from address was originally passed in from sendmail enclosed in |
| 201 // <>. to_lower_string() removed the <> and converted the rest to lowercase, | |
| 202 // except in the case of an empty return path, which was left as the two | |
| 203 // character string <>. | |
| 94 | 204 if (strncmp(efrom, f, maxlen)) { |
| 205 rset(); | |
| 206 strncpy(efrom, f, maxlen); | |
| 207 init(); | |
| 208 append("MAIL FROM:<"); | |
| 101 | 209 if (*f != '<') append(f); |
| 94 | 210 append(">"); |
| 211 return cmd(NULL); | |
| 212 } | |
| 213 return 250; // pretend it worked | |
| 214 } | |
| 215 | |
| 216 | |
| 217 int SMTP::rcpt(char *t) { | |
| 218 init(); | |
| 219 append("RCPT TO:<"); | |
| 220 append(t); | |
| 221 append(">"); | |
| 222 return cmd(NULL); | |
| 223 } | |
| 224 | |
| 225 | |
| 226 int SMTP::quit() { | |
| 227 return cmd("QUIT"); | |
| 228 } | |
| 229 | |
| 230 | |
| 231 void SMTP::closefd() { | |
| 232 shutdown(fd, SHUT_RDWR); | |
| 233 close(fd); | |
| 234 } | |
| 235 | |
| 236 | |
| 237 #ifdef VERIFY_DEBUG | |
| 238 void SMTP::log(char *m, int v) { | |
| 239 char buf[maxlen]; | |
| 240 snprintf(buf, maxlen, m, v); | |
| 241 my_syslog(buf); | |
| 242 } | |
| 243 | |
| 244 | |
| 245 void SMTP::log(char *m, char *v) { | |
| 246 char buf[maxlen]; | |
| 247 snprintf(buf, maxlen, m, v); | |
| 248 my_syslog(buf); | |
| 249 } | |
| 250 #endif | |
| 251 | |
| 252 | |
| 153 | 253 //////////////////////////////////////////////// |
| 254 // smtp verifier so backup mx machines can see the valid users | |
| 255 // | |
| 94 | 256 VERIFY::VERIFY(char *h) { |
| 257 host = h; | |
| 258 last_err = 0; | |
| 259 pthread_mutex_init(&mutex, 0); | |
| 260 } | |
| 261 | |
| 262 | |
| 263 void VERIFY::closer() { | |
| 264 bool ok = true; | |
| 265 while (ok) { | |
| 266 SMTP *conn = NULL; | |
| 267 pthread_mutex_lock(&mutex); | |
| 268 if (connections.empty()) { | |
| 269 ok = false; | |
| 270 } | |
| 271 else { | |
| 272 conn = connections.front(); | |
| 273 time_t now = time(NULL); | |
| 153 | 274 if ((now - conn->get_stamp()) > maxsmtp_age) { |
| 94 | 275 // this connection is ancient, remove it |
| 276 connections.pop_front(); | |
| 277 } | |
| 278 else { | |
| 279 ok = false; | |
| 280 conn = NULL; | |
| 281 } | |
| 282 } | |
| 283 pthread_mutex_unlock(&mutex); | |
| 284 // avoid doing this work inside the mutex lock | |
| 285 if (conn) { | |
| 286 #ifdef VERIFY_DEBUG | |
| 287 conn->log("closer() closes ancient %d", conn->get_fd()); | |
| 288 #endif | |
| 289 delete conn; | |
| 290 } | |
| 291 } | |
| 292 } | |
| 293 | |
| 294 | |
| 295 SMTP* VERIFY::get_connection() { | |
| 296 SMTP *conn = NULL; | |
| 297 pthread_mutex_lock(&mutex); | |
| 298 if (!connections.empty()) { | |
| 299 conn = connections.front(); | |
| 300 connections.pop_front(); | |
| 301 #ifdef VERIFY_DEBUG | |
| 302 conn->log("get_connection() %d from cache", conn->get_fd()); | |
| 303 #endif | |
| 304 } | |
| 305 pthread_mutex_unlock(&mutex); | |
| 306 if (conn) return conn; | |
| 307 int sock = NULL_SOCKET; | |
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308 if ((time(NULL) - last_err) > ERROR_SMTP_SOCKET_TIME) { |
| 94 | 309 // nothing recent, maybe this time it will work |
| 310 hostent *h = gethostbyname(host); | |
| 311 if (h) { | |
| 312 sockaddr_in server; | |
| 313 server.sin_family = h->h_addrtype; | |
| 314 server.sin_port = htons(25); | |
| 315 memcpy(&server.sin_addr, h->h_addr_list[0], h->h_length); | |
| 316 sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 317 if (sock != NULL_SOCKET) { | |
| 318 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0); | |
| 319 if (!rc) { | |
| 320 shutdown(sock, SHUT_RDWR); | |
| 321 close(sock); | |
| 322 sock = NULL_SOCKET; | |
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323 last_err = time(NULL); |
| 94 | 324 } |
| 325 } | |
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326 else last_err = time(NULL); |
| 94 | 327 } |
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328 else last_err = time(NULL); |
| 94 | 329 } |
| 330 if (sock != NULL_SOCKET) { | |
| 331 conn = new SMTP(sock); | |
| 332 #ifdef VERIFY_DEBUG | |
| 333 conn->log("get_connection() %d new socket", conn->get_fd()); | |
| 334 #endif | |
| 335 if (conn->helo() == 250) return conn; | |
| 336 delete conn; | |
| 337 } | |
| 338 return NULL; | |
| 339 } | |
| 340 | |
| 341 | |
| 342 void VERIFY::put_connection(SMTP *conn) { | |
| 343 if (conn->err()) { | |
| 344 #ifdef VERIFY_DEBUG | |
| 345 conn->log("put_socket() %d with error, close it", conn->get_fd()); | |
| 346 #endif | |
| 347 delete conn; | |
| 348 last_err = time(NULL); | |
| 349 } | |
| 350 else { | |
| 351 #ifdef VERIFY_DEBUG | |
| 352 conn->log("put_socket() %d", conn->get_fd()); | |
| 353 #endif | |
| 354 conn->now(); | |
| 355 pthread_mutex_lock(&mutex); | |
| 356 connections.push_back(conn); | |
| 357 pthread_mutex_unlock(&mutex); | |
| 358 } | |
| 359 } | |
| 360 | |
| 361 | |
| 362 bool VERIFY::ok(char *from, char *to) { | |
| 363 if (host == token_myhostname) return true; | |
| 364 SMTP *conn = get_connection(); | |
| 365 if (!conn) return true; // cannot verify right now, we have socket errors | |
| 366 int rc; | |
| 367 rc = conn->from(from); | |
| 368 #ifdef VERIFY_DEBUG | |
| 369 conn->log("verify::ok() from sees %d", rc); | |
| 370 #endif | |
| 371 if (rc != 250) { | |
| 372 conn->rset(); | |
| 373 put_connection(conn); | |
| 374 return (rc >= 500) ? false : true; | |
| 375 } | |
| 376 rc = conn->rcpt(to); | |
| 377 #ifdef VERIFY_DEBUG | |
| 378 conn->log("verify::ok() rcpt sees %d", rc); | |
| 379 #endif | |
| 380 put_connection(conn); | |
| 381 return (rc >= 500) ? false : true; | |
| 382 } | |
| 383 | |
| 384 | |
| 153 | 385 //////////////////////////////////////////////// |
| 386 // setup a new smtp verify host | |
| 387 // | |
| 388 VERIFYP add_verify_host(char *host); | |
| 389 VERIFYP add_verify_host(char *host) { | |
| 390 VERIFYP rc = NULL; | |
| 391 pthread_mutex_lock(&verifier_mutex); | |
| 392 verify_map::iterator i = verifiers.find(host); | |
| 393 if (i == verifiers.end()) { | |
| 394 rc = new VERIFY(host); | |
| 395 verifiers[host] = rc; | |
| 396 } | |
| 397 else rc = (*i).second; | |
| 398 pthread_mutex_unlock(&verifier_mutex); | |
| 399 return rc; | |
| 400 } | |
| 401 | |
| 402 | |
| 403 //////////////////////////////////////////////// | |
| 404 // thread to check for verify hosts with old sockets that we can close | |
| 405 // | |
| 406 void* verify_closer(void *arg) { | |
| 407 while (true) { | |
| 408 sleep(maxsmtp_age); | |
| 409 pthread_mutex_lock(&verifier_mutex); | |
| 410 for (verify_map::iterator i=verifiers.begin(); i!=verifiers.end(); i++) { | |
| 411 VERIFYP v = (*i).second; | |
| 412 v->closer(); | |
| 413 } | |
| 414 pthread_mutex_unlock(&verifier_mutex); | |
| 415 } | |
| 416 return NULL; | |
| 417 } | |
| 418 | |
| 419 | |
| 420 //////////////////////////////////////////////// | |
| 421 // automatic whitelister | |
| 422 // | |
| 423 WHITELISTER::WHITELISTER(char *f, int d) { | |
| 424 fn = f; | |
| 425 days = d; | |
| 426 pthread_mutex_init(&mutex, 0); | |
| 427 need = false; | |
| 154 | 428 ifstream ifs; |
| 429 ifs.open(fn); | |
| 430 if (!ifs.fail()) { | |
| 431 const int maxlen = 1000; | |
| 432 char buf[maxlen]; | |
| 433 while (ifs.getline(buf, maxlen)) { | |
| 434 char *p = strchr(buf, ' '); | |
| 435 if (p) { | |
| 436 *p = '\0'; | |
| 437 char *who = strdup(buf); | |
| 438 int when = atoi(p+1); | |
| 439 rcpts[who] = when; | |
| 440 } | |
| 441 } | |
| 442 } | |
| 443 ifs.close(); | |
| 153 | 444 } |
| 445 | |
| 446 | |
| 447 void WHITELISTER::writer() { | |
| 448 pthread_mutex_lock(&mutex); | |
| 449 time_t limit = time(NULL) - days*86400; | |
| 450 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end();) { | |
| 451 time_t when = (*i).second; | |
| 452 if (when < limit) { | |
| 154 | 453 char *who = (*i).first; |
| 454 free(who); | |
| 153 | 455 autowhite_sent::iterator j = i; |
| 456 j++; | |
| 457 rcpts.erase(i); | |
| 458 i = j; | |
| 459 need = true; | |
| 460 } | |
| 461 else i++; | |
| 462 } | |
| 463 if (need) { | |
| 464 // dump the file | |
| 154 | 465 ofstream ofs; |
| 466 ofs.open(fn); | |
| 467 if (!ofs.fail()) { | |
| 153 | 468 for (autowhite_sent::iterator i=rcpts.begin(); i!=rcpts.end(); i++) { |
| 469 char *who = (*i).first; | |
| 470 int when = (*i).second; | |
| 154 | 471 ofs << who << " " << when << endl; |
| 153 | 472 } |
| 473 } | |
| 154 | 474 ofs.close(); |
| 153 | 475 } |
| 476 pthread_mutex_unlock(&mutex); | |
| 477 } | |
| 478 | |
| 479 | |
| 480 void WHITELISTER::sent(char *to) { | |
| 154 | 481 // we take ownership of the string |
| 153 | 482 pthread_mutex_lock(&mutex); |
| 483 need = true; | |
| 484 rcpts[to] = time(NULL); | |
| 485 pthread_mutex_unlock(&mutex); | |
| 486 } | |
| 487 | |
| 488 | |
| 489 bool WHITELISTER::is_white(char *from) { | |
| 490 bool rc = false; | |
| 491 pthread_mutex_lock(&mutex); | |
| 492 autowhite_sent::iterator i = rcpts.find(from); | |
| 493 if (i != rcpts.end()) { | |
| 494 time_t when = (*i).second; | |
| 495 time_t now = time(NULL); | |
| 496 rc = (when+(days*8640) > now); | |
| 497 } | |
| 498 pthread_mutex_unlock(&mutex); | |
| 499 return rc; | |
| 500 } | |
| 501 | |
| 502 | |
| 503 //////////////////////////////////////////////// | |
| 504 // setup a new auto whitelister file | |
| 505 // | |
| 506 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 507 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 508 WHITELISTERP rc = NULL; | |
| 509 pthread_mutex_lock(&whitelister_mutex); | |
| 510 whitelister_map::iterator i = whitelisters.find(fn); | |
| 511 if (i == whitelisters.end()) { | |
| 512 rc = new WHITELISTER(fn, days); | |
| 513 whitelisters[fn] = rc; | |
| 514 } | |
| 515 else rc = (*i).second; | |
| 516 pthread_mutex_unlock(&whitelister_mutex); | |
| 517 return rc; | |
| 518 } | |
| 519 | |
| 520 | |
| 521 //////////////////////////////////////////////// | |
| 522 // thread to check for whitelister hosts with old sockets that we can close | |
| 523 // | |
| 524 void* whitelister_writer(void *arg) { | |
| 525 while (true) { | |
| 526 sleep(maxauto_age); | |
| 527 pthread_mutex_lock(&whitelister_mutex); | |
| 528 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 529 WHITELISTERP v = (*i).second; | |
| 530 v->writer(); | |
| 531 } | |
| 532 pthread_mutex_unlock(&whitelister_mutex); | |
| 533 } | |
| 534 return NULL; | |
| 535 } | |
| 536 | |
| 537 | |
| 94 | 538 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 539 name = n; | |
| 540 suffix = s; | |
| 541 message = m; | |
| 542 } | |
| 543 | |
| 544 | |
| 545 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 546 return (strcmp(name, rhs.name) == 0) && | |
| 547 (strcmp(suffix, rhs.suffix) == 0) && | |
| 548 (strcmp(message, rhs.message) == 0); | |
| 549 } | |
| 550 | |
| 551 | |
| 552 CONFIG::CONFIG() { | |
| 553 reference_count = 0; | |
| 554 generation = 0; | |
| 555 load_time = 0; | |
| 556 default_context = NULL; | |
| 557 } | |
| 558 | |
| 559 | |
| 560 CONFIG::~CONFIG() { | |
| 146 | 561 if (debug_syslog) { |
| 562 char buf[maxlen]; | |
| 563 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 564 my_syslog(buf); | |
| 565 } | |
| 94 | 566 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 567 CONTEXT *c = *i; | |
| 568 delete c; | |
| 569 } | |
| 570 } | |
| 571 | |
| 572 | |
| 573 void CONFIG::add_context(CONTEXTP con) { | |
| 574 contexts.push_back(con); | |
| 575 if (!default_context && !con->get_parent()) { | |
| 576 // first global context | |
| 577 default_context = con; | |
| 578 } | |
| 579 } | |
| 580 | |
| 581 | |
| 582 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 583 context_map::iterator i = env_to.find(to); | |
| 584 if (i != env_to.end()) { | |
| 585 CONTEXTP c = (*i).second; | |
| 586 if ((c != con) && (c != con->get_parent())) { | |
| 587 if (debug_syslog) { | |
| 588 char oldname[maxlen]; | |
| 589 char newname[maxlen]; | |
| 590 char *oldn = c->get_full_name(oldname, maxlen); | |
| 591 char *newn = con->get_full_name(newname, maxlen); | |
| 592 char buf[maxlen*3]; | |
| 593 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 594 my_syslog(buf); | |
| 595 } | |
| 596 } | |
| 597 } | |
| 598 env_to[to] = con; | |
| 599 } | |
| 600 | |
| 601 | |
| 602 CONTEXTP CONFIG::find_context(char *to) { | |
| 603 context_map::iterator i = env_to.find(to); | |
| 117 | 604 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 605 char *x = strchr(to, '@'); |
| 606 if (x) { | |
| 607 x++; | |
| 608 i = env_to.find(x); | |
| 117 | 609 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 610 char y = *x; |
| 611 *x = '\0'; | |
| 612 i = env_to.find(to); | |
| 613 *x = y; | |
| 614 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 615 } | |
| 616 return default_context; | |
| 617 } | |
| 618 | |
| 619 | |
| 620 void CONFIG::dump() { | |
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621 if (default_context) default_context->dump(true); |
| 94 | 622 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 623 CONTEXTP c = *i; | |
| 624 CONTEXTP p = c->get_parent(); | |
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625 if (!p && (c != default_context)) c->dump(false); |
| 94 | 626 } |
| 627 char buf[maxlen]; | |
| 628 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 629 char *to = (*i).first; | |
| 630 CONTEXTP con = (*i).second; | |
| 631 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 632 } | |
| 633 } | |
| 634 | |
| 635 | |
| 636 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 637 parent = parent_; | |
| 638 name = name_; | |
| 639 verify_host = NULL; | |
| 153 | 640 verifier = NULL; |
| 641 autowhite_file = NULL; | |
| 642 whitelister = NULL; | |
| 94 | 643 env_from_default = (parent) ? token_inherit : token_unknown; |
| 644 content_filtering = (parent) ? parent->content_filtering : false; | |
| 645 content_suffix = NULL; | |
| 646 content_message = NULL; | |
| 119 | 647 uribl_suffix = NULL; |
| 648 uribl_message = NULL; | |
| 94 | 649 host_limit = (parent) ? parent->host_limit : 0; |
| 650 host_limit_message = NULL; | |
| 651 host_random = (parent) ? parent->host_random : false; | |
| 652 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 653 tag_limit_message = NULL; | |
| 140 | 654 default_rcpt_rate = INT_MAX; |
| 94 | 655 } |
| 656 | |
| 657 | |
| 658 CONTEXT::~CONTEXT() { | |
| 659 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 660 DNSBLP d = (*i).second; | |
| 661 // delete the underlying DNSBL objects. | |
| 662 delete d; | |
| 663 } | |
| 664 } | |
| 665 | |
| 666 | |
| 667 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 668 if (p == parent) return true; | |
| 669 if (!parent) return false; | |
| 670 return parent->is_parent(p); | |
| 671 } | |
| 672 | |
| 673 | |
| 674 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 675 if (!parent) return name; | |
| 676 char buf[maxlen]; | |
| 677 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 678 return buffer; | |
| 679 } | |
| 680 | |
| 681 | |
| 682 bool CONTEXT::cover_env_to(char *to) { | |
| 683 char buffer[maxlen]; | |
| 684 char *x = strchr(to, '@'); | |
| 685 if (x) x++; | |
| 686 else x = to; | |
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687 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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688 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 689 string_set::iterator i = env_to.find(x); |
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690 if (i != env_to.end()) return true; // we cover the entire domain |
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691 if (x != to) { |
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692 i = env_to.find(to); |
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693 if (i != env_to.end()) return true; // we cover the specific email address |
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694 } |
| 94 | 695 return false; |
| 696 } | |
| 697 | |
| 698 | |
| 699 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 700 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 701 return verifier; | |
| 702 else if (parent) | |
| 703 return parent->find_verify(to); | |
| 704 else | |
| 705 return NULL; | |
| 706 } | |
| 94 | 707 |
| 153 | 708 |
| 709 WHITELISTERP CONTEXT::find_autowhite(char *to) { | |
| 710 if (whitelister && cover_env_to(to)) | |
| 711 return whitelister; | |
| 712 else if (parent) | |
| 713 return parent->find_autowhite(to); | |
| 714 else | |
| 715 return NULL; | |
| 94 | 716 } |
| 717 | |
| 718 | |
| 136 | 719 int CONTEXT::find_rate(char *user) { |
| 140 | 720 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 721 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 722 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 723 } |
| 724 | |
| 725 | |
| 94 | 726 char *CONTEXT::find_from(char *from) { |
| 153 | 727 if (whitelister && whitelister->is_white(from)) return token_white; |
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728 char *rc = env_from_default; |
| 94 | 729 string_map::iterator i = env_from.find(from); |
| 117 | 730 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 731 else { |
| 732 char *x = strchr(from, '@'); | |
| 733 if (x) { | |
| 734 x++; | |
| 735 i = env_from.find(x); | |
| 117 | 736 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 737 else { |
| 738 char y = *x; | |
| 739 *x = '\0'; | |
| 740 i = env_from.find(from); | |
| 741 *x = y; | |
| 742 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 743 } | |
| 744 } | |
| 745 } | |
| 746 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 747 return (rc == token_inherit) ? token_unknown : rc; | |
| 748 } | |
| 749 | |
| 750 | |
| 751 CONTEXTP CONTEXT::find_context(char *from) { | |
| 752 context_map::iterator i = env_from_context.find(from); | |
| 117 | 753 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 754 char *x = strchr(from, '@'); |
| 755 if (x) { | |
| 756 x++; | |
| 757 i = env_from_context.find(x); | |
| 117 | 758 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 759 char y = *x; |
| 760 *x = '\0'; | |
| 761 i = env_from_context.find(from); | |
| 762 *x = y; | |
| 763 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 764 } | |
| 765 return this; | |
| 766 } | |
| 767 | |
| 768 | |
| 769 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 770 context_map::iterator i = children.find(name); | |
| 771 if (i != children.end()) return (*i).second; | |
| 772 return NULL; | |
| 773 } | |
| 774 | |
| 775 | |
| 776 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 777 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 778 if (i != dnsbl_names.end()) return (*i).second; | |
| 779 if (parent) return parent->find_dnsbl(name); | |
| 780 return NULL; | |
| 781 } | |
| 782 | |
| 783 | |
| 784 char* CONTEXT::get_content_suffix() { | |
| 785 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 786 return content_suffix; | |
| 787 } | |
| 788 | |
| 789 | |
| 119 | 790 char* CONTEXT::get_uribl_suffix() { |
| 791 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 792 return uribl_suffix; | |
| 793 } | |
| 794 | |
| 795 | |
| 94 | 796 char* CONTEXT::get_content_message() { |
| 797 if (!content_message && parent) return parent->get_content_message(); | |
| 798 return content_message; | |
| 799 } | |
| 800 | |
| 801 | |
| 119 | 802 char* CONTEXT::get_uribl_message() { |
| 803 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 804 return uribl_message; | |
| 805 } | |
| 806 | |
| 807 | |
| 94 | 808 string_set& CONTEXT::get_content_host_ignore() { |
| 809 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 810 return content_host_ignore; | |
| 811 } | |
| 812 | |
| 813 | |
| 117 | 814 string_set& CONTEXT::get_content_cctlds() { |
| 815 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 816 return content_cctlds; | |
| 817 } | |
| 818 | |
| 94 | 819 string_set& CONTEXT::get_content_tlds() { |
| 820 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 821 return content_tlds; | |
| 822 } | |
| 823 | |
| 824 | |
| 825 string_set& CONTEXT::get_html_tags() { | |
| 826 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 827 return html_tags; | |
| 828 } | |
| 829 | |
| 830 | |
| 831 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 832 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 833 return dnsbl_list; | |
| 834 } | |
| 835 | |
| 836 | |
| 837 bool CONTEXT::acceptable_content(recorder &memory, char *&msg) { | |
| 838 if (memory.excessive_bad_tags(tag_limit)) { | |
| 839 msg = tag_limit_message; | |
| 840 return false; | |
| 841 } | |
| 842 if (!host_random && memory.excessive_hosts(host_limit)) { | |
| 843 msg = host_limit_message; | |
| 844 return false; | |
| 845 } | |
| 846 return true; | |
| 847 } | |
| 848 | |
| 849 | |
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850 void CONTEXT::dump(bool isdefault, int level) { |
| 94 | 851 char indent[maxlen]; |
| 852 int i = min(maxlen-1, level*4); | |
| 853 memset(indent, ' ', i); | |
| 854 indent[i] = '\0'; | |
| 855 char buf[maxlen]; | |
| 856 char *fullname = get_full_name(buf,maxlen); | |
| 857 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 858 | |
| 859 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 860 char *n = (*i).first; | |
| 861 DNSBL &d = *(*i).second; | |
| 862 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 863 } | |
| 864 | |
| 145 | 865 dnsblp_list dl = get_dnsbl_list(); |
| 866 if (!dl.empty()) { | |
| 94 | 867 printf("%s dnsbl_list", indent); |
| 145 | 868 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 869 DNSBL &d = *(*i); |
| 870 printf(" %s", d.name); | |
| 871 } | |
| 872 printf("; \n"); | |
| 873 } | |
| 874 | |
| 875 if (content_filtering) { | |
| 876 printf("%s content on { \n", indent, env_from_default); | |
| 877 if (content_suffix) { | |
| 878 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 879 } | |
| 119 | 880 if (uribl_suffix) { |
| 881 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 882 } | |
| 94 | 883 if (!content_host_ignore.empty()) { |
| 884 printf("%s ignore { \n", indent); | |
| 885 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 886 printf("%s %s; \n", indent, *i); | |
| 887 } | |
| 888 printf("%s }; \n", indent); | |
| 889 } | |
| 117 | 890 if (!content_cctlds.empty()) { |
| 891 printf("%s cctld { \n", indent); | |
| 892 printf("%s ", indent); | |
| 893 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 894 printf("%s; ", *i); | |
| 895 } | |
| 896 printf("\n%s }; \n", indent); | |
| 897 } | |
| 94 | 898 if (!content_tlds.empty()) { |
| 899 printf("%s tld { \n", indent); | |
| 900 printf("%s ", indent); | |
| 901 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 902 printf("%s; ", *i); | |
| 903 } | |
| 904 printf("\n%s }; \n", indent); | |
| 905 } | |
| 906 if (!html_tags.empty()) { | |
| 907 printf("%s html_tags { \n", indent); | |
| 908 printf("%s ", indent); | |
| 909 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 910 printf("%s; ", *i); | |
| 911 } | |
| 912 printf("\n%s }; \n", indent); | |
| 913 } | |
| 914 if (host_limit_message) { | |
| 915 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 916 } | |
| 917 else if (host_random) { | |
| 918 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 919 } | |
| 920 else { | |
| 921 printf("%s host_limit off; \n", indent); | |
| 922 } | |
| 923 if (tag_limit_message) { | |
| 924 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 925 } | |
| 926 else { | |
| 927 printf("%s html_limit off; \n", indent); | |
| 928 } | |
| 929 printf("%s }; \n", indent); | |
| 930 } | |
| 931 else { | |
| 932 printf("%s content off {}; \n", indent, env_from_default); | |
| 933 } | |
| 934 | |
| 935 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 936 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 937 printf("%s %s; \n", indent, *i); | |
| 938 } | |
| 939 printf("%s }; \n", indent); | |
| 940 | |
| 941 if (verify_host) { | |
| 942 printf("%s verify %s; \n", indent, verify_host); | |
| 943 } | |
| 944 | |
| 153 | 945 if (autowhite_file && whitelister) { |
| 946 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 947 } | |
| 948 | |
| 94 | 949 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 950 CONTEXTP c = (*i).second; | |
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951 c->dump(false, level+1); |
| 94 | 952 } |
| 953 | |
| 954 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 955 if (!env_from.empty()) { | |
| 956 printf("%s // white/black/unknown \n", indent); | |
| 957 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 958 char *f = (*i).first; | |
| 959 char *t = (*i).second; | |
| 960 printf("%s %s \t%s; \n", indent, f, t); | |
| 961 } | |
| 962 } | |
| 963 if (!env_from_context.empty()) { | |
| 964 printf("%s // child contexts \n", indent); | |
| 965 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 966 char *f = (*j).first; | |
| 967 CONTEXTP t = (*j).second; | |
| 968 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 969 } | |
| 970 } | |
| 971 printf("%s }; \n", indent); | |
| 972 | |
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973 if (isdefault) { |
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974 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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975 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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976 char *u = (*j).first; |
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977 int l = (*j).second; |
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978 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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979 } |
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980 printf("%s }; \n", indent); |
| 136 | 981 } |
| 982 | |
| 94 | 983 printf("%s }; \n", indent); |
| 984 } | |
| 985 | |
| 986 | |
| 987 //////////////////////////////////////////////// | |
| 988 // helper to discard the strings held by a string_set | |
| 989 // | |
| 990 void discard(string_set &s) { | |
| 991 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 992 free(*i); | |
| 993 } | |
| 994 s.clear(); | |
| 995 } | |
| 996 | |
| 997 | |
| 998 //////////////////////////////////////////////// | |
| 999 // helper to register a string in a string set | |
| 1000 // | |
| 1001 char* register_string(string_set &s, char *name) { | |
| 1002 string_set::iterator i = s.find(name); | |
| 1003 if (i != s.end()) return *i; | |
| 1004 char *x = strdup(name); | |
| 1005 s.insert(x); | |
| 1006 return x; | |
| 1007 } | |
| 1008 | |
| 1009 | |
| 1010 //////////////////////////////////////////////// | |
| 1011 // register a global string | |
| 1012 // | |
| 1013 char* register_string(char *name) { | |
| 1014 return register_string(all_strings, name); | |
| 1015 } | |
| 1016 | |
| 1017 | |
| 1018 //////////////////////////////////////////////// | |
| 1019 // | |
| 1020 bool tsa(TOKEN &tok, char *token); | |
| 1021 bool tsa(TOKEN &tok, char *token) { | |
| 1022 char *have = tok.next(); | |
| 1023 if (have == token) return true; | |
| 1024 tok.token_error(token, have); | |
| 1025 return false; | |
| 1026 } | |
| 1027 | |
| 1028 | |
| 1029 //////////////////////////////////////////////// | |
| 1030 // | |
| 1031 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1032 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1033 char *name = tok.next(); | |
| 1034 char *suf = tok.next(); | |
| 1035 char *msg = tok.next(); | |
| 1036 if (!tsa(tok, token_semi)) return false; | |
| 1037 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1038 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1039 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1040 // duplicate redefinition, ignore it | |
| 1041 delete dnsnew; | |
| 1042 return true; | |
| 1043 } | |
| 1044 me.add_dnsbl(name, dnsnew); | |
| 1045 return true; | |
| 1046 } | |
| 1047 | |
| 1048 | |
| 1049 //////////////////////////////////////////////// | |
| 1050 // | |
| 1051 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1052 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1053 while (true) { | |
| 1054 char *have = tok.next(); | |
| 1055 if (!have) break; | |
| 1056 if (have == token_semi) break; | |
| 1057 DNSBLP dns = me.find_dnsbl(have); | |
| 1058 if (dns) { | |
| 1059 me.add_dnsbl(dns); | |
| 1060 } | |
| 1061 else { | |
| 1062 tok.token_error("dnsbl name", have); | |
| 1063 return false; | |
| 1064 } | |
| 1065 } | |
| 1066 return true; | |
| 1067 } | |
| 1068 | |
| 1069 | |
| 1070 //////////////////////////////////////////////// | |
| 1071 // | |
| 1072 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1073 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1074 char *setting = tok.next(); | |
| 1075 if (setting == token_on) { | |
| 1076 me.set_content_filtering(true); | |
| 1077 } | |
| 1078 else if (setting == token_off) { | |
| 1079 me.set_content_filtering(false); | |
| 1080 } | |
| 1081 else { | |
| 1082 tok.token_error("on/off", setting); | |
| 1083 return false; | |
| 1084 } | |
| 1085 if (!tsa(tok, token_lbrace)) return false; | |
| 1086 while (true) { | |
| 1087 char *have = tok.next(); | |
| 1088 if (!have) break; | |
| 1089 if (have == token_filter) { | |
| 1090 char *suffix = tok.next(); | |
| 1091 char *messag = tok.next(); | |
| 1092 me.set_content_suffix(suffix); | |
| 1093 me.set_content_message(messag); | |
| 1094 if (!tsa(tok, token_semi)) return false; | |
| 1095 } | |
| 119 | 1096 else if (have == token_uribl) { |
| 1097 char *suffix = tok.next(); | |
| 1098 char *messag = tok.next(); | |
| 1099 me.set_uribl_suffix(suffix); | |
| 1100 me.set_uribl_message(messag); | |
| 1101 if (!tsa(tok, token_semi)) return false; | |
| 1102 } | |
| 94 | 1103 else if (have == token_ignore) { |
| 1104 if (!tsa(tok, token_lbrace)) return false; | |
| 1105 while (true) { | |
| 1106 if (!have) break; | |
| 1107 char *have = tok.next(); | |
| 1108 if (have == token_rbrace) break; // done | |
| 1109 me.add_ignore(have); | |
| 1110 } | |
| 1111 if (!tsa(tok, token_semi)) return false; | |
| 1112 } | |
| 117 | 1113 else if (have == token_cctld) { |
| 1114 if (!tsa(tok, token_lbrace)) return false; | |
| 1115 while (true) { | |
| 1116 char *have = tok.next(); | |
| 1117 if (!have) break; | |
| 1118 if (have == token_rbrace) break; // done | |
| 1119 me.add_cctld(have); | |
| 1120 } | |
| 1121 if (!tsa(tok, token_semi)) return false; | |
| 1122 } | |
| 94 | 1123 else if (have == token_tld) { |
| 1124 if (!tsa(tok, token_lbrace)) return false; | |
| 1125 while (true) { | |
| 1126 char *have = tok.next(); | |
| 1127 if (!have) break; | |
| 1128 if (have == token_rbrace) break; // done | |
| 1129 me.add_tld(have); | |
| 1130 } | |
| 1131 if (!tsa(tok, token_semi)) return false; | |
| 1132 } | |
| 1133 else if (have == token_html_limit) { | |
| 1134 have = tok.next(); | |
| 1135 if (have == token_on) { | |
| 1136 me.set_tag_limit(tok.nextint()); | |
| 1137 me.set_tag_message(tok.next()); | |
| 1138 } | |
| 1139 else if (have == token_off) { | |
| 1140 me.set_tag_limit(0); | |
| 1141 me.set_tag_message(NULL); | |
| 1142 } | |
| 1143 else { | |
| 1144 tok.token_error("on/off", have); | |
| 1145 return false; | |
| 1146 } | |
| 1147 if (!tsa(tok, token_semi)) return false; | |
| 1148 } | |
| 1149 else if (have == token_html_tags) { | |
| 1150 if (!tsa(tok, token_lbrace)) return false; | |
| 1151 while (true) { | |
| 1152 char *have = tok.next(); | |
| 1153 if (!have) break; | |
| 1154 if (have == token_rbrace) { | |
| 1155 break; // done | |
| 1156 } | |
| 1157 else { | |
| 1158 me.add_tag(have); // base version | |
| 1159 char buf[200]; | |
| 1160 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1161 me.add_tag(register_string(buf)); // leading / | |
| 1162 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1163 me.add_tag(register_string(buf)); // trailing / | |
| 1164 } | |
| 1165 } | |
| 1166 if (!tsa(tok, token_semi)) return false; | |
| 1167 } | |
| 1168 else if (have == token_host_limit) { | |
| 1169 have = tok.next(); | |
| 1170 if (have == token_on) { | |
| 1171 me.set_host_limit(tok.nextint()); | |
| 1172 me.set_host_message(tok.next()); | |
| 1173 me.set_host_random(false); | |
| 1174 } | |
| 1175 else if (have == token_off) { | |
| 1176 me.set_host_limit(0); | |
| 1177 me.set_host_message(NULL); | |
| 1178 me.set_host_random(false); | |
| 1179 } | |
| 1180 else if (have == token_soft) { | |
| 1181 me.set_host_limit(tok.nextint()); | |
| 1182 me.set_host_message(NULL); | |
| 1183 me.set_host_random(true); | |
| 1184 } | |
| 1185 else { | |
| 1186 tok.token_error("on/off/soft", have); | |
| 1187 return false; | |
| 1188 } | |
| 1189 if (!tsa(tok, token_semi)) return false; | |
| 1190 } | |
| 1191 else if (have == token_rbrace) { | |
| 1192 break; // done | |
| 1193 } | |
| 1194 else { | |
| 1195 tok.token_error("content keyword", have); | |
| 1196 return false; | |
| 1197 } | |
| 1198 } | |
| 1199 return tsa(tok, token_semi); | |
| 1200 } | |
| 1201 | |
| 1202 | |
| 1203 //////////////////////////////////////////////// | |
| 1204 // | |
| 1205 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1206 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1207 if (!tsa(tok, token_lbrace)) return false; | |
| 1208 while (true) { | |
| 1209 char *have = tok.next(); | |
| 1210 if (!have) break; | |
| 1211 if (have == token_rbrace) break; | |
| 1212 if (have == token_semi) { | |
| 1213 // optional separators | |
| 1214 } | |
| 1215 else if (have == token_dccto) { | |
| 1216 char *flavor = tok.next(); | |
| 1217 if (!tsa(tok, token_lbrace)) return false; | |
| 1218 bool keeping = false; | |
| 1219 while (true) { | |
| 1220 char *have = tok.next(); | |
| 1221 if (!have) break; | |
| 1222 if (have == token_rbrace) break; | |
| 1223 if (have == flavor) { | |
| 1224 keeping = true; | |
| 1225 continue; | |
| 1226 } | |
| 1227 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1228 keeping = false; | |
| 1229 continue; | |
| 1230 } | |
| 1231 if (have == token_envto) { | |
| 1232 have = tok.next(); | |
| 1233 if (keeping) { | |
| 1234 if (me.allow_env_to(have)) { | |
| 1235 me.add_to(have); | |
| 1236 dc.add_to(have, &me); | |
| 1237 } | |
| 1238 } | |
| 1239 } | |
| 1240 //else if (have == token_substitute) { | |
| 1241 // if (tok.next() == token_mailhost) { | |
| 1242 // have = tok.next(); | |
| 1243 // if (keeping) { | |
| 1244 // if (me.allow_env_to(have)) { | |
| 1245 // me.add_to(have); | |
| 1246 // dc.add_to(have, &me); | |
| 1247 // } | |
| 1248 // } | |
| 1249 // } | |
| 1250 //} | |
| 1251 tok.skipeol(); | |
| 1252 } | |
| 1253 } | |
| 1254 else if (me.allow_env_to(have)) { | |
| 1255 me.add_to(have); | |
| 1256 dc.add_to(have, &me); | |
| 1257 } | |
| 1258 else { | |
| 1259 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1260 return false; | |
| 1261 } | |
| 1262 } | |
| 1263 return tsa(tok, token_semi); | |
| 1264 } | |
| 1265 | |
| 1266 | |
| 1267 //////////////////////////////////////////////// | |
| 1268 // | |
| 1269 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1270 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1271 char *host = tok.next(); | |
| 1272 if (!tsa(tok, token_semi)) return false; | |
| 1273 me.set_verify(host); | |
| 153 | 1274 me.set_verifier(add_verify_host(host)); |
| 1275 return true; | |
| 1276 } | |
| 1277 | |
| 1278 | |
| 1279 //////////////////////////////////////////////// | |
| 1280 // | |
| 1281 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1282 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1283 int days = tok.nextint(); | |
| 1284 char *fn = tok.next(); | |
| 1285 if (!tsa(tok, token_semi)) return false; | |
| 1286 me.set_autowhite(fn); | |
| 1287 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1288 return true; |
| 94 | 1289 } |
| 1290 | |
| 1291 | |
| 1292 //////////////////////////////////////////////// | |
| 1293 // | |
| 1294 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1295 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1296 char *st = tok.next(); | |
| 1297 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1298 me.set_from_default(st); | |
| 1299 } | |
| 1300 else { | |
| 1301 tok.push(st); | |
| 1302 } | |
| 1303 if (!tsa(tok, token_lbrace)) return false; | |
| 1304 while (true) { | |
| 1305 char *have = tok.next(); | |
| 1306 if (!have) break; | |
| 1307 if (have == token_rbrace) break; | |
| 1308 if (have == token_semi) { | |
| 1309 // optional separators | |
| 1310 } | |
| 1311 else if (have == token_dccfrom) { | |
| 1312 if (!tsa(tok, token_lbrace)) return false; | |
| 1313 bool keeping = false; | |
| 1314 bool many = false; | |
| 1315 while (true) { | |
| 1316 char *have = tok.next(); | |
| 1317 if (!have) break; | |
| 1318 if (have == token_rbrace) break; | |
| 1319 if (have == token_ok) { | |
| 1320 keeping = true; | |
| 1321 many = false; | |
| 1322 continue; | |
| 1323 } | |
| 1324 else if (have == token_many) { | |
| 1325 keeping = true; | |
| 1326 many = true; | |
| 1327 continue; | |
| 1328 } | |
| 1329 else if (have == token_ok2) { | |
| 1330 keeping = false; | |
| 1331 continue; | |
| 1332 } | |
| 1333 if (have == token_envfrom) { | |
| 1334 have = tok.next(); | |
| 1335 if (keeping) { | |
| 1336 me.add_from(have, (many) ? token_black : token_white); | |
| 1337 } | |
| 1338 } | |
| 1339 else if (have == token_substitute) { | |
| 1340 if (tok.next() == token_mailhost) { | |
| 1341 have = tok.next(); | |
| 1342 me.add_from(have, (many) ? token_black : token_white); | |
| 1343 } | |
| 1344 } | |
| 1345 tok.skipeol(); | |
| 1346 } | |
| 1347 } | |
| 1348 else { | |
| 1349 // may be a valid email address or domain name | |
| 1350 char *st = tok.next(); | |
|
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1351 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1352 me.add_from(have, st); |
| 1353 } | |
| 1354 else { | |
| 1355 CONTEXTP con = me.find_from_context_name(st); | |
| 1356 if (con) { | |
| 1357 me.add_from_context(have, con); | |
| 1358 } | |
| 1359 else { | |
|
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1360 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1361 return false; |
| 1362 } | |
| 1363 } | |
| 1364 } | |
| 1365 } | |
| 1366 return tsa(tok, token_semi); | |
| 1367 } | |
| 1368 | |
| 1369 | |
| 1370 //////////////////////////////////////////////// | |
| 1371 // | |
| 136 | 1372 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1373 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1374 char *def = tok.next(); |
| 141 | 1375 tok.push(def); |
| 1376 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1377 if (!tsa(tok, token_lbrace)) return false; |
| 1378 while (true) { | |
| 1379 char *have = tok.next(); | |
| 1380 if (!have) break; | |
| 1381 if (have == token_rbrace) break; | |
| 1382 if (have == token_semi) { | |
| 1383 // optional separators | |
| 1384 } | |
| 1385 else { | |
| 140 | 1386 me.add_rate(have, tok.nextint()); |
| 136 | 1387 } |
| 1388 } | |
| 1389 return tsa(tok, token_semi); | |
| 1390 } | |
| 1391 | |
| 1392 | |
| 1393 //////////////////////////////////////////////// | |
| 1394 // | |
| 94 | 1395 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1396 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1397 char *name = tok.next(); | |
| 1398 if (!tsa(tok, token_lbrace)) return false; | |
| 1399 CONTEXTP con = new CONTEXT(parent, name); | |
| 1400 | |
| 1401 while (true) { | |
| 1402 char *have = tok.next(); | |
| 1403 if (!have) break; | |
| 1404 if (have == token_rbrace) break; // done | |
| 1405 if (have == token_dnsbl) { | |
| 1406 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1407 } | |
| 1408 else if (have == token_dnsbll) { | |
| 1409 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1410 } | |
| 1411 else if (have == token_content) { | |
| 1412 if (!parse_content(tok, dc, *con)) return false; | |
| 1413 } | |
| 1414 else if (have == token_envto) { | |
| 1415 if (!parse_envto(tok, dc, *con)) return false; | |
| 1416 } | |
| 1417 else if (have == token_verify) { | |
| 1418 if (!parse_verify(tok, dc, *con)) return false; | |
| 1419 } | |
| 153 | 1420 else if (have == token_autowhite) { |
| 1421 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1422 } | |
| 94 | 1423 else if (have == token_envfrom) { |
| 1424 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1425 } | |
| 140 | 1426 else if (have == token_rate) { |
| 1427 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1428 if (!parse_rate(tok, dc, *con)) return false; |
| 1429 } | |
| 94 | 1430 else if (have == token_context) { |
| 1431 if (!parse_context(tok, dc, con)) return false; | |
| 1432 } | |
| 1433 else { | |
| 1434 tok.token_error("context keyword", have); | |
| 1435 return false; | |
| 1436 } | |
| 1437 } | |
| 1438 | |
| 1439 if (!tsa(tok, token_semi)) { | |
| 1440 delete con; | |
| 1441 return false; | |
| 1442 } | |
| 1443 dc.add_context(con); | |
| 1444 if (parent) parent->add_context(con); | |
| 1445 return true; | |
| 1446 } | |
| 1447 | |
| 1448 | |
| 1449 //////////////////////////////////////////////// | |
| 1450 // parse a config file | |
| 1451 // | |
| 1452 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1453 int count = 0; |
| 94 | 1454 TOKEN tok(fn, &dc.config_files); |
| 1455 while (true) { | |
| 1456 char *have = tok.next(); | |
| 1457 if (!have) break; | |
| 1458 if (have == token_context) { | |
| 1459 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1460 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1461 return false; |
| 1462 } | |
| 99 | 1463 else count++; |
| 94 | 1464 } |
| 1465 else { | |
| 1466 tok.token_error(token_context, have); | |
| 1467 return false; | |
| 1468 } | |
| 1469 } | |
| 99 | 1470 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1471 return (dc.default_context) ? true : false; |
| 1472 } | |
| 1473 | |
| 1474 | |
| 1475 //////////////////////////////////////////////// | |
| 1476 // init the tokens | |
| 1477 // | |
| 1478 void token_init() { | |
| 153 | 1479 token_autowhite = register_string("autowhite"); |
| 94 | 1480 token_black = register_string("black"); |
| 117 | 1481 token_cctld = register_string("cctld"); |
| 94 | 1482 token_content = register_string("content"); |
| 1483 token_context = register_string("context"); | |
| 1484 token_dccfrom = register_string("dcc_from"); | |
| 1485 token_dccto = register_string("dcc_to"); | |
| 1486 token_default = register_string("default"); | |
| 1487 token_dnsbl = register_string("dnsbl"); | |
| 1488 token_dnsbll = register_string("dnsbl_list"); | |
| 1489 token_envfrom = register_string("env_from"); | |
| 1490 token_envto = register_string("env_to"); | |
| 1491 token_filter = register_string("filter"); | |
| 1492 token_host_limit = register_string("host_limit"); | |
| 1493 token_html_limit = register_string("html_limit"); | |
| 1494 token_html_tags = register_string("html_tags"); | |
| 1495 token_ignore = register_string("ignore"); | |
| 1496 token_include = register_string("include"); | |
| 1497 token_inherit = register_string("inherit"); | |
| 1498 token_lbrace = register_string("{"); | |
| 1499 token_mailhost = register_string("mail_host"); | |
| 1500 token_many = register_string("many"); | |
| 1501 token_off = register_string("off"); | |
| 1502 token_ok = register_string("ok"); | |
| 1503 token_ok2 = register_string("ok2"); | |
| 1504 token_on = register_string("on"); | |
| 136 | 1505 token_rate = register_string("rate_limit"); |
| 94 | 1506 token_rbrace = register_string("}"); |
| 1507 token_semi = register_string(";"); | |
| 1508 token_soft = register_string("soft"); | |
| 1509 token_substitute = register_string("substitute"); | |
| 1510 token_tld = register_string("tld"); | |
| 1511 token_unknown = register_string("unknown"); | |
| 119 | 1512 token_uribl = register_string("uribl"); |
| 94 | 1513 token_verify = register_string("verify"); |
| 1514 token_white = register_string("white"); | |
| 1515 | |
| 1516 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1517 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1518 } | |
| 1519 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1520 token_myhostname = register_string(myhostname); | |
| 1521 } |