Mercurial > dnsbl
annotate src/context.cpp @ 156:a220bfb9211f
add auto whitelisting
| author | carl |
|---|---|
| date | Sun, 08 Jul 2007 09:46:55 -0700 |
| parents | 89ce226e5383 |
| children | b3ed72ee6564 |
| 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(); |
| 156 | 475 need = false; |
| 153 | 476 } |
| 477 pthread_mutex_unlock(&mutex); | |
| 478 } | |
| 479 | |
| 480 | |
| 481 void WHITELISTER::sent(char *to) { | |
| 154 | 482 // we take ownership of the string |
| 153 | 483 pthread_mutex_lock(&mutex); |
| 484 need = true; | |
| 485 rcpts[to] = time(NULL); | |
| 486 pthread_mutex_unlock(&mutex); | |
| 487 } | |
| 488 | |
| 489 | |
| 490 bool WHITELISTER::is_white(char *from) { | |
| 491 bool rc = false; | |
| 492 pthread_mutex_lock(&mutex); | |
| 493 autowhite_sent::iterator i = rcpts.find(from); | |
| 494 if (i != rcpts.end()) { | |
| 495 time_t when = (*i).second; | |
| 496 time_t now = time(NULL); | |
| 497 rc = (when+(days*8640) > now); | |
| 498 } | |
| 499 pthread_mutex_unlock(&mutex); | |
| 500 return rc; | |
| 501 } | |
| 502 | |
| 503 | |
| 504 //////////////////////////////////////////////// | |
| 505 // setup a new auto whitelister file | |
| 506 // | |
| 507 WHITELISTERP add_whitelister_file(char *fn, int days); | |
| 508 WHITELISTERP add_whitelister_file(char *fn, int days) { | |
| 509 WHITELISTERP rc = NULL; | |
| 510 pthread_mutex_lock(&whitelister_mutex); | |
| 511 whitelister_map::iterator i = whitelisters.find(fn); | |
| 512 if (i == whitelisters.end()) { | |
| 513 rc = new WHITELISTER(fn, days); | |
| 514 whitelisters[fn] = rc; | |
| 515 } | |
| 156 | 516 else { |
| 517 rc = (*i).second; | |
| 518 rc->set_days(days); | |
| 519 } | |
| 153 | 520 pthread_mutex_unlock(&whitelister_mutex); |
| 521 return rc; | |
| 522 } | |
| 523 | |
| 524 | |
| 525 //////////////////////////////////////////////// | |
| 526 // thread to check for whitelister hosts with old sockets that we can close | |
| 527 // | |
| 528 void* whitelister_writer(void *arg) { | |
| 529 while (true) { | |
| 530 sleep(maxauto_age); | |
| 531 pthread_mutex_lock(&whitelister_mutex); | |
| 532 for (whitelister_map::iterator i=whitelisters.begin(); i!=whitelisters.end(); i++) { | |
| 533 WHITELISTERP v = (*i).second; | |
| 534 v->writer(); | |
| 535 } | |
| 536 pthread_mutex_unlock(&whitelister_mutex); | |
| 537 } | |
| 538 return NULL; | |
| 539 } | |
| 540 | |
| 541 | |
| 94 | 542 DNSBL::DNSBL(char *n, char *s, char *m) { |
| 543 name = n; | |
| 544 suffix = s; | |
| 545 message = m; | |
| 546 } | |
| 547 | |
| 548 | |
| 549 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 550 return (strcmp(name, rhs.name) == 0) && | |
| 551 (strcmp(suffix, rhs.suffix) == 0) && | |
| 552 (strcmp(message, rhs.message) == 0); | |
| 553 } | |
| 554 | |
| 555 | |
| 556 CONFIG::CONFIG() { | |
| 557 reference_count = 0; | |
| 558 generation = 0; | |
| 559 load_time = 0; | |
| 560 default_context = NULL; | |
| 561 } | |
| 562 | |
| 563 | |
| 564 CONFIG::~CONFIG() { | |
| 146 | 565 if (debug_syslog) { |
| 566 char buf[maxlen]; | |
| 567 snprintf(buf, sizeof(buf), "freeing memory for old configuration generation %d", generation); | |
| 568 my_syslog(buf); | |
| 569 } | |
| 94 | 570 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 571 CONTEXT *c = *i; | |
| 572 delete c; | |
| 573 } | |
| 574 } | |
| 575 | |
| 576 | |
| 577 void CONFIG::add_context(CONTEXTP con) { | |
| 578 contexts.push_back(con); | |
| 579 if (!default_context && !con->get_parent()) { | |
| 580 // first global context | |
| 581 default_context = con; | |
| 582 } | |
| 583 } | |
| 584 | |
| 585 | |
| 586 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 587 context_map::iterator i = env_to.find(to); | |
| 588 if (i != env_to.end()) { | |
| 589 CONTEXTP c = (*i).second; | |
| 590 if ((c != con) && (c != con->get_parent())) { | |
| 591 if (debug_syslog) { | |
| 592 char oldname[maxlen]; | |
| 593 char newname[maxlen]; | |
| 594 char *oldn = c->get_full_name(oldname, maxlen); | |
| 595 char *newn = con->get_full_name(newname, maxlen); | |
| 596 char buf[maxlen*3]; | |
| 597 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 598 my_syslog(buf); | |
| 599 } | |
| 600 } | |
| 601 } | |
| 602 env_to[to] = con; | |
| 603 } | |
| 604 | |
| 605 | |
| 606 CONTEXTP CONFIG::find_context(char *to) { | |
| 607 context_map::iterator i = env_to.find(to); | |
| 117 | 608 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 609 char *x = strchr(to, '@'); |
| 610 if (x) { | |
| 611 x++; | |
| 612 i = env_to.find(x); | |
| 117 | 613 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 614 char y = *x; |
| 615 *x = '\0'; | |
| 616 i = env_to.find(to); | |
| 617 *x = y; | |
| 618 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 619 } | |
| 620 return default_context; | |
| 621 } | |
| 622 | |
| 623 | |
| 624 void CONFIG::dump() { | |
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625 if (default_context) default_context->dump(true); |
| 94 | 626 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { |
| 627 CONTEXTP c = *i; | |
| 628 CONTEXTP p = c->get_parent(); | |
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629 if (!p && (c != default_context)) c->dump(false); |
| 94 | 630 } |
| 631 char buf[maxlen]; | |
| 632 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 633 char *to = (*i).first; | |
| 634 CONTEXTP con = (*i).second; | |
| 635 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 636 } | |
| 637 } | |
| 638 | |
| 639 | |
| 640 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 641 parent = parent_; | |
| 642 name = name_; | |
| 643 verify_host = NULL; | |
| 153 | 644 verifier = NULL; |
| 645 autowhite_file = NULL; | |
| 646 whitelister = NULL; | |
| 94 | 647 env_from_default = (parent) ? token_inherit : token_unknown; |
| 648 content_filtering = (parent) ? parent->content_filtering : false; | |
| 649 content_suffix = NULL; | |
| 650 content_message = NULL; | |
| 119 | 651 uribl_suffix = NULL; |
| 652 uribl_message = NULL; | |
| 94 | 653 host_limit = (parent) ? parent->host_limit : 0; |
| 654 host_limit_message = NULL; | |
| 655 host_random = (parent) ? parent->host_random : false; | |
| 656 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 657 tag_limit_message = NULL; | |
| 140 | 658 default_rcpt_rate = INT_MAX; |
| 94 | 659 } |
| 660 | |
| 661 | |
| 662 CONTEXT::~CONTEXT() { | |
| 663 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 664 DNSBLP d = (*i).second; | |
| 665 // delete the underlying DNSBL objects. | |
| 666 delete d; | |
| 667 } | |
| 668 } | |
| 669 | |
| 670 | |
| 671 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 672 if (p == parent) return true; | |
| 673 if (!parent) return false; | |
| 674 return parent->is_parent(p); | |
| 675 } | |
| 676 | |
| 677 | |
| 678 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 679 if (!parent) return name; | |
| 680 char buf[maxlen]; | |
| 681 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 682 return buffer; | |
| 683 } | |
| 684 | |
| 685 | |
| 686 bool CONTEXT::cover_env_to(char *to) { | |
| 687 char buffer[maxlen]; | |
| 688 char *x = strchr(to, '@'); | |
| 689 if (x) x++; | |
| 690 else x = to; | |
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691 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ |
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692 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 693 string_set::iterator i = env_to.find(x); |
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694 if (i != env_to.end()) return true; // we cover the entire domain |
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695 if (x != to) { |
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696 i = env_to.find(to); |
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697 if (i != env_to.end()) return true; // we cover the specific email address |
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698 } |
| 94 | 699 return false; |
| 700 } | |
| 701 | |
| 702 | |
| 703 VERIFYP CONTEXT::find_verify(char *to) { | |
| 153 | 704 if (verifier && (verify_host != token_myhostname) && cover_env_to(to)) |
| 705 return verifier; | |
| 706 else if (parent) | |
| 707 return parent->find_verify(to); | |
| 708 else | |
| 709 return NULL; | |
| 710 } | |
| 94 | 711 |
| 153 | 712 |
| 713 WHITELISTERP CONTEXT::find_autowhite(char *to) { | |
| 714 if (whitelister && cover_env_to(to)) | |
| 715 return whitelister; | |
| 716 else if (parent) | |
| 717 return parent->find_autowhite(to); | |
| 718 else | |
| 719 return NULL; | |
| 94 | 720 } |
| 721 | |
| 722 | |
| 136 | 723 int CONTEXT::find_rate(char *user) { |
| 140 | 724 if (rcpt_per_hour.empty()) return default_rcpt_rate; |
| 136 | 725 rcpt_rates::iterator i = rcpt_per_hour.find(user); |
| 140 | 726 return (i == rcpt_per_hour.end()) ? default_rcpt_rate : (*i).second; |
| 136 | 727 } |
| 728 | |
| 729 | |
| 94 | 730 char *CONTEXT::find_from(char *from) { |
| 153 | 731 if (whitelister && whitelister->is_white(from)) return token_white; |
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732 char *rc = env_from_default; |
| 94 | 733 string_map::iterator i = env_from.find(from); |
| 117 | 734 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 735 else { |
| 736 char *x = strchr(from, '@'); | |
| 737 if (x) { | |
| 738 x++; | |
| 739 i = env_from.find(x); | |
| 117 | 740 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 741 else { |
| 742 char y = *x; | |
| 743 *x = '\0'; | |
| 744 i = env_from.find(from); | |
| 745 *x = y; | |
| 746 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 747 } | |
| 748 } | |
| 749 } | |
| 750 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 751 return (rc == token_inherit) ? token_unknown : rc; | |
| 752 } | |
| 753 | |
| 754 | |
| 755 CONTEXTP CONTEXT::find_context(char *from) { | |
| 756 context_map::iterator i = env_from_context.find(from); | |
| 117 | 757 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 758 char *x = strchr(from, '@'); |
| 759 if (x) { | |
| 760 x++; | |
| 761 i = env_from_context.find(x); | |
| 117 | 762 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 763 char y = *x; |
| 764 *x = '\0'; | |
| 765 i = env_from_context.find(from); | |
| 766 *x = y; | |
| 767 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 768 } | |
| 769 return this; | |
| 770 } | |
| 771 | |
| 772 | |
| 773 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 774 context_map::iterator i = children.find(name); | |
| 775 if (i != children.end()) return (*i).second; | |
| 776 return NULL; | |
| 777 } | |
| 778 | |
| 779 | |
| 780 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 781 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 782 if (i != dnsbl_names.end()) return (*i).second; | |
| 783 if (parent) return parent->find_dnsbl(name); | |
| 784 return NULL; | |
| 785 } | |
| 786 | |
| 787 | |
| 788 char* CONTEXT::get_content_suffix() { | |
| 789 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 790 return content_suffix; | |
| 791 } | |
| 792 | |
| 793 | |
| 119 | 794 char* CONTEXT::get_uribl_suffix() { |
| 795 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 796 return uribl_suffix; | |
| 797 } | |
| 798 | |
| 799 | |
| 94 | 800 char* CONTEXT::get_content_message() { |
| 801 if (!content_message && parent) return parent->get_content_message(); | |
| 802 return content_message; | |
| 803 } | |
| 804 | |
| 805 | |
| 119 | 806 char* CONTEXT::get_uribl_message() { |
| 807 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 808 return uribl_message; | |
| 809 } | |
| 810 | |
| 811 | |
| 94 | 812 string_set& CONTEXT::get_content_host_ignore() { |
| 813 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 814 return content_host_ignore; | |
| 815 } | |
| 816 | |
| 817 | |
| 117 | 818 string_set& CONTEXT::get_content_cctlds() { |
| 819 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 820 return content_cctlds; | |
| 821 } | |
| 822 | |
| 94 | 823 string_set& CONTEXT::get_content_tlds() { |
| 824 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 825 return content_tlds; | |
| 826 } | |
| 827 | |
| 828 | |
| 829 string_set& CONTEXT::get_html_tags() { | |
| 830 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 831 return html_tags; | |
| 832 } | |
| 833 | |
| 834 | |
| 835 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 836 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 837 return dnsbl_list; | |
| 838 } | |
| 839 | |
| 840 | |
| 841 bool CONTEXT::acceptable_content(recorder &memory, char *&msg) { | |
| 842 if (memory.excessive_bad_tags(tag_limit)) { | |
| 843 msg = tag_limit_message; | |
| 844 return false; | |
| 845 } | |
| 846 if (!host_random && memory.excessive_hosts(host_limit)) { | |
| 847 msg = host_limit_message; | |
| 848 return false; | |
| 849 } | |
| 850 return true; | |
| 851 } | |
| 852 | |
| 853 | |
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854 void CONTEXT::dump(bool isdefault, int level) { |
| 94 | 855 char indent[maxlen]; |
| 856 int i = min(maxlen-1, level*4); | |
| 857 memset(indent, ' ', i); | |
| 858 indent[i] = '\0'; | |
| 859 char buf[maxlen]; | |
| 860 char *fullname = get_full_name(buf,maxlen); | |
| 861 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 862 | |
| 863 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 864 char *n = (*i).first; | |
| 865 DNSBL &d = *(*i).second; | |
| 866 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 867 } | |
| 868 | |
| 145 | 869 dnsblp_list dl = get_dnsbl_list(); |
| 870 if (!dl.empty()) { | |
| 94 | 871 printf("%s dnsbl_list", indent); |
| 145 | 872 for (dnsblp_list::iterator i=dl.begin(); i!=dl.end(); i++) { |
| 94 | 873 DNSBL &d = *(*i); |
| 874 printf(" %s", d.name); | |
| 875 } | |
| 876 printf("; \n"); | |
| 877 } | |
| 878 | |
| 879 if (content_filtering) { | |
| 880 printf("%s content on { \n", indent, env_from_default); | |
| 881 if (content_suffix) { | |
| 882 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 883 } | |
| 119 | 884 if (uribl_suffix) { |
| 885 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 886 } | |
| 94 | 887 if (!content_host_ignore.empty()) { |
| 888 printf("%s ignore { \n", indent); | |
| 889 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 890 printf("%s %s; \n", indent, *i); | |
| 891 } | |
| 892 printf("%s }; \n", indent); | |
| 893 } | |
| 117 | 894 if (!content_cctlds.empty()) { |
| 895 printf("%s cctld { \n", indent); | |
| 896 printf("%s ", indent); | |
| 897 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 898 printf("%s; ", *i); | |
| 899 } | |
| 900 printf("\n%s }; \n", indent); | |
| 901 } | |
| 94 | 902 if (!content_tlds.empty()) { |
| 903 printf("%s tld { \n", indent); | |
| 904 printf("%s ", indent); | |
| 905 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 906 printf("%s; ", *i); | |
| 907 } | |
| 908 printf("\n%s }; \n", indent); | |
| 909 } | |
| 910 if (!html_tags.empty()) { | |
| 911 printf("%s html_tags { \n", indent); | |
| 912 printf("%s ", indent); | |
| 913 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 914 printf("%s; ", *i); | |
| 915 } | |
| 916 printf("\n%s }; \n", indent); | |
| 917 } | |
| 918 if (host_limit_message) { | |
| 919 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 920 } | |
| 921 else if (host_random) { | |
| 922 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 923 } | |
| 924 else { | |
| 925 printf("%s host_limit off; \n", indent); | |
| 926 } | |
| 927 if (tag_limit_message) { | |
| 928 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 929 } | |
| 930 else { | |
| 931 printf("%s html_limit off; \n", indent); | |
| 932 } | |
| 933 printf("%s }; \n", indent); | |
| 934 } | |
| 935 else { | |
| 936 printf("%s content off {}; \n", indent, env_from_default); | |
| 937 } | |
| 938 | |
| 939 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 940 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 941 printf("%s %s; \n", indent, *i); | |
| 942 } | |
| 943 printf("%s }; \n", indent); | |
| 944 | |
| 945 if (verify_host) { | |
| 946 printf("%s verify %s; \n", indent, verify_host); | |
| 947 } | |
| 948 | |
| 153 | 949 if (autowhite_file && whitelister) { |
| 950 printf("%s autowhite %d %s; \n", indent, whitelister->get_days(), autowhite_file); | |
| 951 } | |
| 952 | |
| 94 | 953 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { |
| 954 CONTEXTP c = (*i).second; | |
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955 c->dump(false, level+1); |
| 94 | 956 } |
| 957 | |
| 958 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 959 if (!env_from.empty()) { | |
| 960 printf("%s // white/black/unknown \n", indent); | |
| 961 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 962 char *f = (*i).first; | |
| 963 char *t = (*i).second; | |
| 964 printf("%s %s \t%s; \n", indent, f, t); | |
| 965 } | |
| 966 } | |
| 967 if (!env_from_context.empty()) { | |
| 968 printf("%s // child contexts \n", indent); | |
| 969 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 970 char *f = (*j).first; | |
| 971 CONTEXTP t = (*j).second; | |
| 972 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 973 } | |
| 974 } | |
| 975 printf("%s }; \n", indent); | |
| 976 | |
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977 if (isdefault) { |
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978 printf("%s rate_limit %d { \n", indent, default_rcpt_rate); |
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979 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { |
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980 char *u = (*j).first; |
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981 int l = (*j).second; |
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982 printf("%s \"%s\" \t%d; \n", indent, u, l); |
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983 } |
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984 printf("%s }; \n", indent); |
| 136 | 985 } |
| 986 | |
| 94 | 987 printf("%s }; \n", indent); |
| 988 } | |
| 989 | |
| 990 | |
| 991 //////////////////////////////////////////////// | |
| 992 // helper to discard the strings held by a string_set | |
| 993 // | |
| 994 void discard(string_set &s) { | |
| 995 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 996 free(*i); | |
| 997 } | |
| 998 s.clear(); | |
| 999 } | |
| 1000 | |
| 1001 | |
| 1002 //////////////////////////////////////////////// | |
| 1003 // helper to register a string in a string set | |
| 1004 // | |
| 1005 char* register_string(string_set &s, char *name) { | |
| 1006 string_set::iterator i = s.find(name); | |
| 1007 if (i != s.end()) return *i; | |
| 1008 char *x = strdup(name); | |
| 1009 s.insert(x); | |
| 1010 return x; | |
| 1011 } | |
| 1012 | |
| 1013 | |
| 1014 //////////////////////////////////////////////// | |
| 1015 // register a global string | |
| 1016 // | |
| 1017 char* register_string(char *name) { | |
| 1018 return register_string(all_strings, name); | |
| 1019 } | |
| 1020 | |
| 1021 | |
| 1022 //////////////////////////////////////////////// | |
| 1023 // | |
| 1024 bool tsa(TOKEN &tok, char *token); | |
| 1025 bool tsa(TOKEN &tok, char *token) { | |
| 1026 char *have = tok.next(); | |
| 1027 if (have == token) return true; | |
| 1028 tok.token_error(token, have); | |
| 1029 return false; | |
| 1030 } | |
| 1031 | |
| 1032 | |
| 1033 //////////////////////////////////////////////// | |
| 1034 // | |
| 1035 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1036 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1037 char *name = tok.next(); | |
| 1038 char *suf = tok.next(); | |
| 1039 char *msg = tok.next(); | |
| 1040 if (!tsa(tok, token_semi)) return false; | |
| 1041 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 1042 DNSBLP dnsold = me.find_dnsbl(name); | |
| 1043 if (dnsold && (*dnsold == *dnsnew)) { | |
| 1044 // duplicate redefinition, ignore it | |
| 1045 delete dnsnew; | |
| 1046 return true; | |
| 1047 } | |
| 1048 me.add_dnsbl(name, dnsnew); | |
| 1049 return true; | |
| 1050 } | |
| 1051 | |
| 1052 | |
| 1053 //////////////////////////////////////////////// | |
| 1054 // | |
| 1055 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1056 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1057 while (true) { | |
| 1058 char *have = tok.next(); | |
| 1059 if (!have) break; | |
| 1060 if (have == token_semi) break; | |
| 1061 DNSBLP dns = me.find_dnsbl(have); | |
| 1062 if (dns) { | |
| 1063 me.add_dnsbl(dns); | |
| 1064 } | |
| 1065 else { | |
| 1066 tok.token_error("dnsbl name", have); | |
| 1067 return false; | |
| 1068 } | |
| 1069 } | |
| 1070 return true; | |
| 1071 } | |
| 1072 | |
| 1073 | |
| 1074 //////////////////////////////////////////////// | |
| 1075 // | |
| 1076 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1077 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1078 char *setting = tok.next(); | |
| 1079 if (setting == token_on) { | |
| 1080 me.set_content_filtering(true); | |
| 1081 } | |
| 1082 else if (setting == token_off) { | |
| 1083 me.set_content_filtering(false); | |
| 1084 } | |
| 1085 else { | |
| 1086 tok.token_error("on/off", setting); | |
| 1087 return false; | |
| 1088 } | |
| 1089 if (!tsa(tok, token_lbrace)) return false; | |
| 1090 while (true) { | |
| 1091 char *have = tok.next(); | |
| 1092 if (!have) break; | |
| 1093 if (have == token_filter) { | |
| 1094 char *suffix = tok.next(); | |
| 1095 char *messag = tok.next(); | |
| 1096 me.set_content_suffix(suffix); | |
| 1097 me.set_content_message(messag); | |
| 1098 if (!tsa(tok, token_semi)) return false; | |
| 1099 } | |
| 119 | 1100 else if (have == token_uribl) { |
| 1101 char *suffix = tok.next(); | |
| 1102 char *messag = tok.next(); | |
| 1103 me.set_uribl_suffix(suffix); | |
| 1104 me.set_uribl_message(messag); | |
| 1105 if (!tsa(tok, token_semi)) return false; | |
| 1106 } | |
| 94 | 1107 else if (have == token_ignore) { |
| 1108 if (!tsa(tok, token_lbrace)) return false; | |
| 1109 while (true) { | |
| 1110 if (!have) break; | |
| 1111 char *have = tok.next(); | |
| 1112 if (have == token_rbrace) break; // done | |
| 1113 me.add_ignore(have); | |
| 1114 } | |
| 1115 if (!tsa(tok, token_semi)) return false; | |
| 1116 } | |
| 117 | 1117 else if (have == token_cctld) { |
| 1118 if (!tsa(tok, token_lbrace)) return false; | |
| 1119 while (true) { | |
| 1120 char *have = tok.next(); | |
| 1121 if (!have) break; | |
| 1122 if (have == token_rbrace) break; // done | |
| 1123 me.add_cctld(have); | |
| 1124 } | |
| 1125 if (!tsa(tok, token_semi)) return false; | |
| 1126 } | |
| 94 | 1127 else if (have == token_tld) { |
| 1128 if (!tsa(tok, token_lbrace)) return false; | |
| 1129 while (true) { | |
| 1130 char *have = tok.next(); | |
| 1131 if (!have) break; | |
| 1132 if (have == token_rbrace) break; // done | |
| 1133 me.add_tld(have); | |
| 1134 } | |
| 1135 if (!tsa(tok, token_semi)) return false; | |
| 1136 } | |
| 1137 else if (have == token_html_limit) { | |
| 1138 have = tok.next(); | |
| 1139 if (have == token_on) { | |
| 1140 me.set_tag_limit(tok.nextint()); | |
| 1141 me.set_tag_message(tok.next()); | |
| 1142 } | |
| 1143 else if (have == token_off) { | |
| 1144 me.set_tag_limit(0); | |
| 1145 me.set_tag_message(NULL); | |
| 1146 } | |
| 1147 else { | |
| 1148 tok.token_error("on/off", have); | |
| 1149 return false; | |
| 1150 } | |
| 1151 if (!tsa(tok, token_semi)) return false; | |
| 1152 } | |
| 1153 else if (have == token_html_tags) { | |
| 1154 if (!tsa(tok, token_lbrace)) return false; | |
| 1155 while (true) { | |
| 1156 char *have = tok.next(); | |
| 1157 if (!have) break; | |
| 1158 if (have == token_rbrace) { | |
| 1159 break; // done | |
| 1160 } | |
| 1161 else { | |
| 1162 me.add_tag(have); // base version | |
| 1163 char buf[200]; | |
| 1164 snprintf(buf, sizeof(buf), "/%s", have); | |
| 1165 me.add_tag(register_string(buf)); // leading / | |
| 1166 snprintf(buf, sizeof(buf), "%s/", have); | |
| 1167 me.add_tag(register_string(buf)); // trailing / | |
| 1168 } | |
| 1169 } | |
| 1170 if (!tsa(tok, token_semi)) return false; | |
| 1171 } | |
| 1172 else if (have == token_host_limit) { | |
| 1173 have = tok.next(); | |
| 1174 if (have == token_on) { | |
| 1175 me.set_host_limit(tok.nextint()); | |
| 1176 me.set_host_message(tok.next()); | |
| 1177 me.set_host_random(false); | |
| 1178 } | |
| 1179 else if (have == token_off) { | |
| 1180 me.set_host_limit(0); | |
| 1181 me.set_host_message(NULL); | |
| 1182 me.set_host_random(false); | |
| 1183 } | |
| 1184 else if (have == token_soft) { | |
| 1185 me.set_host_limit(tok.nextint()); | |
| 1186 me.set_host_message(NULL); | |
| 1187 me.set_host_random(true); | |
| 1188 } | |
| 1189 else { | |
| 1190 tok.token_error("on/off/soft", have); | |
| 1191 return false; | |
| 1192 } | |
| 1193 if (!tsa(tok, token_semi)) return false; | |
| 1194 } | |
| 1195 else if (have == token_rbrace) { | |
| 1196 break; // done | |
| 1197 } | |
| 1198 else { | |
| 1199 tok.token_error("content keyword", have); | |
| 1200 return false; | |
| 1201 } | |
| 1202 } | |
| 1203 return tsa(tok, token_semi); | |
| 1204 } | |
| 1205 | |
| 1206 | |
| 1207 //////////////////////////////////////////////// | |
| 1208 // | |
| 1209 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1210 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1211 if (!tsa(tok, token_lbrace)) return false; | |
| 1212 while (true) { | |
| 1213 char *have = tok.next(); | |
| 1214 if (!have) break; | |
| 1215 if (have == token_rbrace) break; | |
| 1216 if (have == token_semi) { | |
| 1217 // optional separators | |
| 1218 } | |
| 1219 else if (have == token_dccto) { | |
| 1220 char *flavor = tok.next(); | |
| 1221 if (!tsa(tok, token_lbrace)) return false; | |
| 1222 bool keeping = false; | |
| 1223 while (true) { | |
| 1224 char *have = tok.next(); | |
| 1225 if (!have) break; | |
| 1226 if (have == token_rbrace) break; | |
| 1227 if (have == flavor) { | |
| 1228 keeping = true; | |
| 1229 continue; | |
| 1230 } | |
| 1231 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1232 keeping = false; | |
| 1233 continue; | |
| 1234 } | |
| 1235 if (have == token_envto) { | |
| 1236 have = tok.next(); | |
| 1237 if (keeping) { | |
| 1238 if (me.allow_env_to(have)) { | |
| 1239 me.add_to(have); | |
| 1240 dc.add_to(have, &me); | |
| 1241 } | |
| 1242 } | |
| 1243 } | |
| 1244 //else if (have == token_substitute) { | |
| 1245 // if (tok.next() == token_mailhost) { | |
| 1246 // have = tok.next(); | |
| 1247 // if (keeping) { | |
| 1248 // if (me.allow_env_to(have)) { | |
| 1249 // me.add_to(have); | |
| 1250 // dc.add_to(have, &me); | |
| 1251 // } | |
| 1252 // } | |
| 1253 // } | |
| 1254 //} | |
| 1255 tok.skipeol(); | |
| 1256 } | |
| 1257 } | |
| 1258 else if (me.allow_env_to(have)) { | |
| 1259 me.add_to(have); | |
| 1260 dc.add_to(have, &me); | |
| 1261 } | |
| 1262 else { | |
| 1263 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1264 return false; | |
| 1265 } | |
| 1266 } | |
| 1267 return tsa(tok, token_semi); | |
| 1268 } | |
| 1269 | |
| 1270 | |
| 1271 //////////////////////////////////////////////// | |
| 1272 // | |
| 1273 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1274 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1275 char *host = tok.next(); | |
| 1276 if (!tsa(tok, token_semi)) return false; | |
| 1277 me.set_verify(host); | |
| 153 | 1278 me.set_verifier(add_verify_host(host)); |
| 1279 return true; | |
| 1280 } | |
| 1281 | |
| 1282 | |
| 1283 //////////////////////////////////////////////// | |
| 1284 // | |
| 1285 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1286 bool parse_autowhite(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1287 int days = tok.nextint(); | |
| 1288 char *fn = tok.next(); | |
| 1289 if (!tsa(tok, token_semi)) return false; | |
| 1290 me.set_autowhite(fn); | |
| 1291 me.set_whitelister(add_whitelister_file(fn, days)); | |
| 99 | 1292 return true; |
| 94 | 1293 } |
| 1294 | |
| 1295 | |
| 1296 //////////////////////////////////////////////// | |
| 1297 // | |
| 1298 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1299 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1300 char *st = tok.next(); | |
| 1301 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1302 me.set_from_default(st); | |
| 1303 } | |
| 1304 else { | |
| 1305 tok.push(st); | |
| 1306 } | |
| 1307 if (!tsa(tok, token_lbrace)) return false; | |
| 1308 while (true) { | |
| 1309 char *have = tok.next(); | |
| 1310 if (!have) break; | |
| 1311 if (have == token_rbrace) break; | |
| 1312 if (have == token_semi) { | |
| 1313 // optional separators | |
| 1314 } | |
| 1315 else if (have == token_dccfrom) { | |
| 1316 if (!tsa(tok, token_lbrace)) return false; | |
| 1317 bool keeping = false; | |
| 1318 bool many = false; | |
| 1319 while (true) { | |
| 1320 char *have = tok.next(); | |
| 1321 if (!have) break; | |
| 1322 if (have == token_rbrace) break; | |
| 1323 if (have == token_ok) { | |
| 1324 keeping = true; | |
| 1325 many = false; | |
| 1326 continue; | |
| 1327 } | |
| 1328 else if (have == token_many) { | |
| 1329 keeping = true; | |
| 1330 many = true; | |
| 1331 continue; | |
| 1332 } | |
| 1333 else if (have == token_ok2) { | |
| 1334 keeping = false; | |
| 1335 continue; | |
| 1336 } | |
| 1337 if (have == token_envfrom) { | |
| 1338 have = tok.next(); | |
| 1339 if (keeping) { | |
| 1340 me.add_from(have, (many) ? token_black : token_white); | |
| 1341 } | |
| 1342 } | |
| 1343 else if (have == token_substitute) { | |
| 1344 if (tok.next() == token_mailhost) { | |
| 1345 have = tok.next(); | |
| 1346 me.add_from(have, (many) ? token_black : token_white); | |
| 1347 } | |
| 1348 } | |
| 1349 tok.skipeol(); | |
| 1350 } | |
| 1351 } | |
| 1352 else { | |
| 1353 // may be a valid email address or domain name | |
| 1354 char *st = tok.next(); | |
|
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1355 if ((st == token_white) || (st == token_black) || (st == token_unknown) || (st == token_inherit)) { |
| 94 | 1356 me.add_from(have, st); |
| 1357 } | |
| 1358 else { | |
| 1359 CONTEXTP con = me.find_from_context_name(st); | |
| 1360 if (con) { | |
| 1361 me.add_from_context(have, con); | |
| 1362 } | |
| 1363 else { | |
|
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1364 tok.token_error("white/black/unknown/inherit or child context name", st); |
| 94 | 1365 return false; |
| 1366 } | |
| 1367 } | |
| 1368 } | |
| 1369 } | |
| 1370 return tsa(tok, token_semi); | |
| 1371 } | |
| 1372 | |
| 1373 | |
| 1374 //////////////////////////////////////////////// | |
| 1375 // | |
| 136 | 1376 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1377 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 140 | 1378 char *def = tok.next(); |
| 141 | 1379 tok.push(def); |
| 1380 if (def != token_lbrace) me.set_default_rate(tok.nextint()); | |
| 136 | 1381 if (!tsa(tok, token_lbrace)) return false; |
| 1382 while (true) { | |
| 1383 char *have = tok.next(); | |
| 1384 if (!have) break; | |
| 1385 if (have == token_rbrace) break; | |
| 1386 if (have == token_semi) { | |
| 1387 // optional separators | |
| 1388 } | |
| 1389 else { | |
| 140 | 1390 me.add_rate(have, tok.nextint()); |
| 136 | 1391 } |
| 1392 } | |
| 1393 return tsa(tok, token_semi); | |
| 1394 } | |
| 1395 | |
| 1396 | |
| 1397 //////////////////////////////////////////////// | |
| 1398 // | |
| 94 | 1399 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1400 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1401 char *name = tok.next(); | |
| 1402 if (!tsa(tok, token_lbrace)) return false; | |
| 1403 CONTEXTP con = new CONTEXT(parent, name); | |
| 1404 | |
| 1405 while (true) { | |
| 1406 char *have = tok.next(); | |
| 1407 if (!have) break; | |
| 1408 if (have == token_rbrace) break; // done | |
| 1409 if (have == token_dnsbl) { | |
| 1410 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1411 } | |
| 1412 else if (have == token_dnsbll) { | |
| 1413 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1414 } | |
| 1415 else if (have == token_content) { | |
| 1416 if (!parse_content(tok, dc, *con)) return false; | |
| 1417 } | |
| 1418 else if (have == token_envto) { | |
| 1419 if (!parse_envto(tok, dc, *con)) return false; | |
| 1420 } | |
| 1421 else if (have == token_verify) { | |
| 1422 if (!parse_verify(tok, dc, *con)) return false; | |
| 1423 } | |
| 153 | 1424 else if (have == token_autowhite) { |
| 1425 if (!parse_autowhite(tok, dc, *con)) return false; | |
| 1426 } | |
| 94 | 1427 else if (have == token_envfrom) { |
| 1428 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1429 } | |
| 140 | 1430 else if (have == token_rate) { |
| 1431 if (parent || dc.default_context) tok.token_error("rate limit ignored in non default context"); | |
| 136 | 1432 if (!parse_rate(tok, dc, *con)) return false; |
| 1433 } | |
| 94 | 1434 else if (have == token_context) { |
| 1435 if (!parse_context(tok, dc, con)) return false; | |
| 1436 } | |
| 1437 else { | |
| 1438 tok.token_error("context keyword", have); | |
| 1439 return false; | |
| 1440 } | |
| 1441 } | |
| 1442 | |
| 1443 if (!tsa(tok, token_semi)) { | |
| 1444 delete con; | |
| 1445 return false; | |
| 1446 } | |
| 1447 dc.add_context(con); | |
| 1448 if (parent) parent->add_context(con); | |
| 1449 return true; | |
| 1450 } | |
| 1451 | |
| 1452 | |
| 1453 //////////////////////////////////////////////// | |
| 1454 // parse a config file | |
| 1455 // | |
| 1456 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1457 int count = 0; |
| 94 | 1458 TOKEN tok(fn, &dc.config_files); |
| 1459 while (true) { | |
| 1460 char *have = tok.next(); | |
| 1461 if (!have) break; | |
| 1462 if (have == token_context) { | |
| 1463 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1464 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1465 return false; |
| 1466 } | |
| 99 | 1467 else count++; |
| 94 | 1468 } |
| 1469 else { | |
| 1470 tok.token_error(token_context, have); | |
| 1471 return false; | |
| 1472 } | |
| 1473 } | |
| 99 | 1474 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1475 return (dc.default_context) ? true : false; |
| 1476 } | |
| 1477 | |
| 1478 | |
| 1479 //////////////////////////////////////////////// | |
| 1480 // init the tokens | |
| 1481 // | |
| 1482 void token_init() { | |
| 153 | 1483 token_autowhite = register_string("autowhite"); |
| 94 | 1484 token_black = register_string("black"); |
| 117 | 1485 token_cctld = register_string("cctld"); |
| 94 | 1486 token_content = register_string("content"); |
| 1487 token_context = register_string("context"); | |
| 1488 token_dccfrom = register_string("dcc_from"); | |
| 1489 token_dccto = register_string("dcc_to"); | |
| 1490 token_default = register_string("default"); | |
| 1491 token_dnsbl = register_string("dnsbl"); | |
| 1492 token_dnsbll = register_string("dnsbl_list"); | |
| 1493 token_envfrom = register_string("env_from"); | |
| 1494 token_envto = register_string("env_to"); | |
| 1495 token_filter = register_string("filter"); | |
| 1496 token_host_limit = register_string("host_limit"); | |
| 1497 token_html_limit = register_string("html_limit"); | |
| 1498 token_html_tags = register_string("html_tags"); | |
| 1499 token_ignore = register_string("ignore"); | |
| 1500 token_include = register_string("include"); | |
| 1501 token_inherit = register_string("inherit"); | |
| 1502 token_lbrace = register_string("{"); | |
| 1503 token_mailhost = register_string("mail_host"); | |
| 1504 token_many = register_string("many"); | |
| 1505 token_off = register_string("off"); | |
| 1506 token_ok = register_string("ok"); | |
| 1507 token_ok2 = register_string("ok2"); | |
| 1508 token_on = register_string("on"); | |
| 136 | 1509 token_rate = register_string("rate_limit"); |
| 94 | 1510 token_rbrace = register_string("}"); |
| 1511 token_semi = register_string(";"); | |
| 1512 token_soft = register_string("soft"); | |
| 1513 token_substitute = register_string("substitute"); | |
| 1514 token_tld = register_string("tld"); | |
| 1515 token_unknown = register_string("unknown"); | |
| 119 | 1516 token_uribl = register_string("uribl"); |
| 94 | 1517 token_verify = register_string("verify"); |
| 1518 token_white = register_string("white"); | |
| 1519 | |
| 1520 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1521 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1522 } | |
| 1523 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1524 token_myhostname = register_string(myhostname); | |
| 1525 } |