Mercurial > dnsbl
annotate src/context.cpp @ 136:f4746d8a12a3
add smtp auth rate limits
| author | carl |
|---|---|
| date | Tue, 26 Sep 2006 13:59:14 -0700 |
| parents | c5cd1261394d |
| children | 4028de9b46dd |
| rev | line source |
|---|---|
| 94 | 1 /* |
| 2 | |
| 3 Copyright (c) 2004 Carl Byington - 510 Software Group, released under | |
| 4 the GPL version 2 or any later version at your choice available at | |
| 5 http://www.fsf.org/licenses/gpl.txt | |
| 6 | |
| 7 */ | |
| 8 | |
| 9 #include "includes.h" | |
| 10 | |
| 11 // needed for socket io | |
|
96
1edd4e8d3a60
fix missing include, not all systems define HOST_NAME_MAX
carl
parents:
94
diff
changeset
|
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 | |
| 24 char *token_black; | |
| 25 char *token_content; | |
| 26 char *token_context; | |
| 27 char *token_dccfrom; | |
| 28 char *token_dccto; | |
| 29 char *token_default; | |
| 30 char *token_dnsbl; | |
| 31 char *token_dnsbll; | |
| 32 char *token_envfrom; | |
| 33 char *token_envto; | |
| 34 char *token_filter; | |
| 35 char *token_host_limit; | |
| 36 char *token_html_limit; | |
| 37 char *token_html_tags; | |
| 38 char *token_ignore; | |
| 39 char *token_include; | |
| 40 char *token_inherit; | |
| 41 char *token_lbrace; | |
| 42 char *token_mailhost; | |
| 43 char *token_many; | |
| 44 char *token_off; | |
| 45 char *token_ok2; | |
| 46 char *token_ok; | |
| 47 char *token_on; | |
| 136 | 48 char *token_rate; |
| 94 | 49 char *token_rbrace; |
| 50 char *token_semi; | |
| 51 char *token_soft; | |
| 52 char *token_substitute; | |
| 53 char *token_tld; | |
| 117 | 54 char *token_cctld; |
| 94 | 55 char *token_unknown; |
| 119 | 56 char *token_uribl; |
| 94 | 57 char *token_verify; |
| 58 char *token_white; | |
| 59 | |
| 60 char *token_myhostname; | |
|
96
1edd4e8d3a60
fix missing include, not all systems define HOST_NAME_MAX
carl
parents:
94
diff
changeset
|
61 #ifndef HOST_NAME_MAX |
|
1edd4e8d3a60
fix missing include, not all systems define HOST_NAME_MAX
carl
parents:
94
diff
changeset
|
62 #define HOST_NAME_MAX 255 |
|
1edd4e8d3a60
fix missing include, not all systems define HOST_NAME_MAX
carl
parents:
94
diff
changeset
|
63 #endif |
| 94 | 64 char myhostname[HOST_NAME_MAX+1]; |
| 65 | |
| 66 verify_map verifiers; | |
| 67 string_set all_strings; // owns all the strings, only modified by the config loader thread | |
| 68 const int maxlen = 1000; // used for snprintf buffers | |
| 69 const int maxage = 120; // smtp verify sockets older than this are ancient | |
| 70 extern int NULL_SOCKET; | |
|
129
c5cd1261394d
ignore smtp connection attempts for 10 minutes when getting connection errors on verify hosts
carl
parents:
119
diff
changeset
|
71 const time_t ERROR_SMTP_SOCKET_TIME = 600; // number of seconds between attempts to open a socket to an smtp server |
| 94 | 72 |
| 73 | |
| 74 int SMTP::writer() { | |
| 75 #ifdef VERIFY_DEBUG | |
| 76 log("writer() sees buffer with %s", buffer); | |
| 77 log("writer() sees error %d", (int)error); | |
| 78 #endif | |
| 79 int rs = 0; | |
| 80 if (!error) { | |
| 81 int len = strlen(buffer); | |
| 82 while (rs < len) { | |
| 83 int ws = write(fd, buffer+rs, len-rs); | |
| 84 if (ws > 0) { | |
| 85 rs += ws; | |
| 86 } | |
| 87 else { | |
| 88 // peer closed the socket! | |
| 89 rs = 0; | |
| 90 error = true; | |
| 91 break; | |
| 92 } | |
| 93 } | |
| 94 } | |
| 95 return rs; | |
| 96 } | |
| 97 | |
| 98 | |
| 99 int SMTP::reader() { | |
| 100 // read some bytes terminated by lf or end of buffer. | |
| 101 // we may have a multi line response or part thereof in the buffer. | |
| 102 #ifdef VERIFY_DEBUG | |
| 103 log("reader() sees error %d", (int)error); | |
| 104 #endif | |
| 105 if (error) return 0; | |
| 106 int len = maxlen-1; // room for null terminator | |
| 107 while (pending < len) { | |
| 108 int ws = read(fd, buffer+pending, len-pending); | |
| 109 if (ws > 0) { | |
| 110 pending += ws; | |
| 111 if (buffer[pending-1] == '\n') break; | |
| 112 } | |
| 113 else { | |
| 114 // peer closed the socket! | |
| 115 pending = 0; | |
| 116 error = true; | |
| 117 break; | |
| 118 } | |
| 119 } | |
| 120 buffer[pending] = '\0'; | |
| 121 #ifdef VERIFY_DEBUG | |
| 122 log("reader() sees buffer with %s", buffer); | |
| 123 #endif | |
| 124 return pending; | |
| 125 } | |
| 126 | |
| 127 | |
| 128 int SMTP::read_line() { | |
| 129 char *lf = strchr(buffer, '\n'); | |
| 130 if (!lf) { | |
| 131 reader(); // get a lf | |
| 132 lf = strchr(buffer, '\n'); | |
| 133 if (!lf) lf = buffer + pending - 1; | |
| 134 } | |
| 135 return (lf-buffer)+1; // number of bytes in this line | |
| 136 } | |
| 137 | |
| 138 | |
| 97 | 139 void SMTP::flush_line(int r) { |
| 94 | 140 if (pending > r) memmove(buffer, buffer+r, pending-r); |
| 141 pending -= r; | |
| 142 } | |
| 143 | |
| 144 | |
| 145 int SMTP::read_response() { | |
| 146 pending = 0; | |
| 147 buffer[pending] = '\0'; | |
| 148 while (true) { | |
| 149 int r = read_line(); | |
| 150 #ifdef VERIFY_DEBUG | |
| 151 log("read_response() sees line with %s", buffer); | |
| 152 log("read_response() sees line length %d", r); | |
| 153 #endif | |
| 154 if (r == 0) return 0; // failed to read any bytes | |
| 155 if ((r > 4) && (buffer[3] == '-')) { | |
| 156 flush_line(r); | |
| 157 continue; | |
| 158 } | |
| 159 return atoi(buffer); | |
| 160 } | |
| 161 return 0; | |
| 162 } | |
| 163 | |
| 164 | |
| 165 int SMTP::cmd(char *c) { | |
| 166 if (c) { | |
| 167 init(); | |
| 168 append(c); | |
| 169 } | |
| 170 append("\r\n"); | |
| 171 writer(); | |
| 172 return read_response(); | |
| 173 } | |
| 174 | |
| 175 | |
| 176 int SMTP::helo() { | |
| 177 if (read_response() != 220) return 0; | |
| 178 init(); | |
| 179 append("HELO "); | |
| 180 append(token_myhostname); | |
| 181 return cmd(NULL); | |
| 182 } | |
| 183 | |
| 184 | |
| 185 int SMTP::rset() { | |
| 186 int rc = cmd("RSET"); | |
| 187 efrom[0] = '\0'; | |
| 188 return rc; | |
| 189 } | |
| 190 | |
| 191 | |
| 192 int SMTP::from(char *f) { | |
| 101 | 193 // the mail from address was originally passed in from sendmail enclosed in |
| 194 // <>. to_lower_string() removed the <> and converted the rest to lowercase, | |
| 195 // except in the case of an empty return path, which was left as the two | |
| 196 // character string <>. | |
| 94 | 197 if (strncmp(efrom, f, maxlen)) { |
| 198 rset(); | |
| 199 strncpy(efrom, f, maxlen); | |
| 200 init(); | |
| 201 append("MAIL FROM:<"); | |
| 101 | 202 if (*f != '<') append(f); |
| 94 | 203 append(">"); |
| 204 return cmd(NULL); | |
| 205 } | |
| 206 return 250; // pretend it worked | |
| 207 } | |
| 208 | |
| 209 | |
| 210 int SMTP::rcpt(char *t) { | |
| 211 init(); | |
| 212 append("RCPT TO:<"); | |
| 213 append(t); | |
| 214 append(">"); | |
| 215 return cmd(NULL); | |
| 216 } | |
| 217 | |
| 218 | |
| 219 int SMTP::quit() { | |
| 220 return cmd("QUIT"); | |
| 221 } | |
| 222 | |
| 223 | |
| 224 void SMTP::closefd() { | |
| 225 shutdown(fd, SHUT_RDWR); | |
| 226 close(fd); | |
| 227 } | |
| 228 | |
| 229 | |
| 230 #ifdef VERIFY_DEBUG | |
| 231 void SMTP::log(char *m, int v) { | |
| 232 char buf[maxlen]; | |
| 233 snprintf(buf, maxlen, m, v); | |
| 234 my_syslog(buf); | |
| 235 } | |
| 236 | |
| 237 | |
| 238 void SMTP::log(char *m, char *v) { | |
| 239 char buf[maxlen]; | |
| 240 snprintf(buf, maxlen, m, v); | |
| 241 my_syslog(buf); | |
| 242 } | |
| 243 #endif | |
| 244 | |
| 245 | |
| 246 VERIFY::VERIFY(char *h) { | |
| 247 host = h; | |
| 248 last_err = 0; | |
| 249 pthread_mutex_init(&mutex, 0); | |
| 250 } | |
| 251 | |
| 252 | |
| 253 void VERIFY::closer() { | |
| 254 bool ok = true; | |
| 255 while (ok) { | |
| 256 SMTP *conn = NULL; | |
| 257 pthread_mutex_lock(&mutex); | |
| 258 if (connections.empty()) { | |
| 259 ok = false; | |
| 260 } | |
| 261 else { | |
| 262 conn = connections.front(); | |
| 263 time_t now = time(NULL); | |
| 264 if ((now - conn->get_stamp()) > maxage) { | |
| 265 // this connection is ancient, remove it | |
| 266 connections.pop_front(); | |
| 267 } | |
| 268 else { | |
| 269 ok = false; | |
| 270 conn = NULL; | |
| 271 } | |
| 272 } | |
| 273 pthread_mutex_unlock(&mutex); | |
| 274 // avoid doing this work inside the mutex lock | |
| 275 if (conn) { | |
| 276 #ifdef VERIFY_DEBUG | |
| 277 conn->log("closer() closes ancient %d", conn->get_fd()); | |
| 278 #endif | |
| 279 delete conn; | |
| 280 } | |
| 281 } | |
| 282 } | |
| 283 | |
| 284 | |
| 285 SMTP* VERIFY::get_connection() { | |
| 286 SMTP *conn = NULL; | |
| 287 pthread_mutex_lock(&mutex); | |
| 288 if (!connections.empty()) { | |
| 289 conn = connections.front(); | |
| 290 connections.pop_front(); | |
| 291 #ifdef VERIFY_DEBUG | |
| 292 conn->log("get_connection() %d from cache", conn->get_fd()); | |
| 293 #endif | |
| 294 } | |
| 295 pthread_mutex_unlock(&mutex); | |
| 296 if (conn) return conn; | |
| 297 int sock = NULL_SOCKET; | |
|
129
c5cd1261394d
ignore smtp connection attempts for 10 minutes when getting connection errors on verify hosts
carl
parents:
119
diff
changeset
|
298 if ((time(NULL) - last_err) > ERROR_SMTP_SOCKET_TIME) { |
| 94 | 299 // nothing recent, maybe this time it will work |
| 300 hostent *h = gethostbyname(host); | |
| 301 if (h) { | |
| 302 sockaddr_in server; | |
| 303 server.sin_family = h->h_addrtype; | |
| 304 server.sin_port = htons(25); | |
| 305 memcpy(&server.sin_addr, h->h_addr_list[0], h->h_length); | |
| 306 sock = socket(PF_INET, SOCK_STREAM, 0); | |
| 307 if (sock != NULL_SOCKET) { | |
| 308 bool rc = (connect(sock, (sockaddr *)&server, sizeof(server)) == 0); | |
| 309 if (!rc) { | |
| 310 shutdown(sock, SHUT_RDWR); | |
| 311 close(sock); | |
| 312 sock = NULL_SOCKET; | |
|
129
c5cd1261394d
ignore smtp connection attempts for 10 minutes when getting connection errors on verify hosts
carl
parents:
119
diff
changeset
|
313 last_err = time(NULL); |
| 94 | 314 } |
| 315 } | |
|
129
c5cd1261394d
ignore smtp connection attempts for 10 minutes when getting connection errors on verify hosts
carl
parents:
119
diff
changeset
|
316 else last_err = time(NULL); |
| 94 | 317 } |
|
129
c5cd1261394d
ignore smtp connection attempts for 10 minutes when getting connection errors on verify hosts
carl
parents:
119
diff
changeset
|
318 else last_err = time(NULL); |
| 94 | 319 } |
| 320 if (sock != NULL_SOCKET) { | |
| 321 conn = new SMTP(sock); | |
| 322 #ifdef VERIFY_DEBUG | |
| 323 conn->log("get_connection() %d new socket", conn->get_fd()); | |
| 324 #endif | |
| 325 if (conn->helo() == 250) return conn; | |
| 326 delete conn; | |
| 327 } | |
| 328 return NULL; | |
| 329 } | |
| 330 | |
| 331 | |
| 332 void VERIFY::put_connection(SMTP *conn) { | |
| 333 if (conn->err()) { | |
| 334 #ifdef VERIFY_DEBUG | |
| 335 conn->log("put_socket() %d with error, close it", conn->get_fd()); | |
| 336 #endif | |
| 337 delete conn; | |
| 338 last_err = time(NULL); | |
| 339 } | |
| 340 else { | |
| 341 #ifdef VERIFY_DEBUG | |
| 342 conn->log("put_socket() %d", conn->get_fd()); | |
| 343 #endif | |
| 344 conn->now(); | |
| 345 pthread_mutex_lock(&mutex); | |
| 346 connections.push_back(conn); | |
| 347 pthread_mutex_unlock(&mutex); | |
| 348 } | |
| 349 } | |
| 350 | |
| 351 | |
| 352 bool VERIFY::ok(char *from, char *to) { | |
| 353 if (host == token_myhostname) return true; | |
| 354 SMTP *conn = get_connection(); | |
| 355 if (!conn) return true; // cannot verify right now, we have socket errors | |
| 356 int rc; | |
| 357 rc = conn->from(from); | |
| 358 #ifdef VERIFY_DEBUG | |
| 359 conn->log("verify::ok() from sees %d", rc); | |
| 360 #endif | |
| 361 if (rc != 250) { | |
| 362 conn->rset(); | |
| 363 put_connection(conn); | |
| 364 return (rc >= 500) ? false : true; | |
| 365 } | |
| 366 rc = conn->rcpt(to); | |
| 367 #ifdef VERIFY_DEBUG | |
| 368 conn->log("verify::ok() rcpt sees %d", rc); | |
| 369 #endif | |
| 370 put_connection(conn); | |
| 371 return (rc >= 500) ? false : true; | |
| 372 } | |
| 373 | |
| 374 | |
| 375 DNSBL::DNSBL(char *n, char *s, char *m) { | |
| 376 name = n; | |
| 377 suffix = s; | |
| 378 message = m; | |
| 379 } | |
| 380 | |
| 381 | |
| 382 bool DNSBL::operator==(const DNSBL &rhs) { | |
| 383 return (strcmp(name, rhs.name) == 0) && | |
| 384 (strcmp(suffix, rhs.suffix) == 0) && | |
| 385 (strcmp(message, rhs.message) == 0); | |
| 386 } | |
| 387 | |
| 388 | |
| 389 CONFIG::CONFIG() { | |
| 390 reference_count = 0; | |
| 391 generation = 0; | |
| 392 load_time = 0; | |
| 393 default_context = NULL; | |
| 394 } | |
| 395 | |
| 396 | |
| 397 CONFIG::~CONFIG() { | |
| 398 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { | |
| 399 CONTEXT *c = *i; | |
| 400 delete c; | |
| 401 } | |
| 402 } | |
| 403 | |
| 404 | |
| 405 void CONFIG::add_context(CONTEXTP con) { | |
| 406 contexts.push_back(con); | |
| 407 if (!default_context && !con->get_parent()) { | |
| 408 // first global context | |
| 409 default_context = con; | |
| 410 } | |
| 411 } | |
| 412 | |
| 413 | |
| 414 void CONFIG::add_to(char *to, CONTEXTP con) { | |
| 415 context_map::iterator i = env_to.find(to); | |
| 416 if (i != env_to.end()) { | |
| 417 CONTEXTP c = (*i).second; | |
| 418 int s = strlen(to); | |
| 419 bool at = s && (to[s-1] == '@'); | |
| 420 if (at && con->is_parent(c->get_parent())) { | |
| 421 if (debug_syslog) { | |
| 422 char oldname[maxlen]; | |
| 423 char newname[maxlen]; | |
| 424 char *oldn = c->get_full_name(oldname, maxlen); | |
| 425 char *newn = con->get_full_name(newname, maxlen); | |
| 426 char buf[maxlen*3]; | |
| 427 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the first one wins", oldn, newn, to); | |
| 428 my_syslog(buf); | |
| 429 } | |
| 430 return; // don't take over user@ entries from your ancestors children | |
| 431 } | |
| 432 if ((c != con) && (c != con->get_parent())) { | |
| 433 if (debug_syslog) { | |
| 434 char oldname[maxlen]; | |
| 435 char newname[maxlen]; | |
| 436 char *oldn = c->get_full_name(oldname, maxlen); | |
| 437 char *newn = con->get_full_name(newname, maxlen); | |
| 438 char buf[maxlen*3]; | |
| 439 snprintf(buf, maxlen*3, "both %s and %s claim envelope to %s, the second one wins", oldn, newn, to); | |
| 440 my_syslog(buf); | |
| 441 } | |
| 442 } | |
| 443 } | |
| 444 env_to[to] = con; | |
| 445 } | |
| 446 | |
| 447 | |
| 448 CONTEXTP CONFIG::find_context(char *to) { | |
| 449 context_map::iterator i = env_to.find(to); | |
| 117 | 450 if (i != env_to.end()) return (*i).second; // found user@domain key |
| 94 | 451 char *x = strchr(to, '@'); |
| 452 if (x) { | |
| 453 x++; | |
| 454 i = env_to.find(x); | |
| 117 | 455 if (i != env_to.end()) return (*i).second; // found domain key |
| 94 | 456 char y = *x; |
| 457 *x = '\0'; | |
| 458 i = env_to.find(to); | |
| 459 *x = y; | |
| 460 if (i != env_to.end()) return (*i).second; // found user@ key | |
| 461 } | |
| 462 return default_context; | |
| 463 } | |
| 464 | |
| 465 | |
| 466 void CONFIG::dump() { | |
| 467 if (default_context) default_context->dump(); | |
| 468 for (context_list::iterator i=contexts.begin(); i!=contexts.end(); i++) { | |
| 469 CONTEXTP c = *i; | |
| 470 CONTEXTP p = c->get_parent(); | |
| 471 if (!p && (c != default_context)) c->dump(); | |
| 472 } | |
| 473 char buf[maxlen]; | |
| 474 for (context_map::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 475 char *to = (*i).first; | |
| 476 CONTEXTP con = (*i).second; | |
| 477 printf("// envelope to %s \t-> context %s \n", to, con->get_full_name(buf,maxlen)); | |
| 478 } | |
| 479 } | |
| 480 | |
| 481 | |
| 482 CONTEXT::CONTEXT(CONTEXTP parent_, char *name_) { | |
| 483 parent = parent_; | |
| 484 name = name_; | |
| 485 verify_host = NULL; | |
| 486 env_from_default = (parent) ? token_inherit : token_unknown; | |
| 487 content_filtering = (parent) ? parent->content_filtering : false; | |
| 488 content_suffix = NULL; | |
| 489 content_message = NULL; | |
| 119 | 490 uribl_suffix = NULL; |
| 491 uribl_message = NULL; | |
| 94 | 492 host_limit = (parent) ? parent->host_limit : 0; |
| 493 host_limit_message = NULL; | |
| 494 host_random = (parent) ? parent->host_random : false; | |
| 495 tag_limit = (parent) ? parent->tag_limit : 0; | |
| 496 tag_limit_message = NULL; | |
| 497 } | |
| 498 | |
| 499 | |
| 500 CONTEXT::~CONTEXT() { | |
| 501 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 502 DNSBLP d = (*i).second; | |
| 503 // delete the underlying DNSBL objects. | |
| 504 delete d; | |
| 505 } | |
| 506 } | |
| 507 | |
| 508 | |
| 509 bool CONTEXT::is_parent(CONTEXTP p) { | |
| 510 if (p == parent) return true; | |
| 511 if (!parent) return false; | |
| 512 return parent->is_parent(p); | |
| 513 } | |
| 514 | |
| 515 | |
| 516 char *CONTEXT::get_full_name(char *buffer, int size) { | |
| 517 if (!parent) return name; | |
| 518 char buf[maxlen]; | |
| 519 snprintf(buffer, size, "%s.%s", parent->get_full_name(buf, maxlen), name); | |
| 520 return buffer; | |
| 521 } | |
| 522 | |
| 523 | |
| 524 bool CONTEXT::cover_env_to(char *to) { | |
| 525 char buffer[maxlen]; | |
| 526 char *x = strchr(to, '@'); | |
| 527 if (x) x++; | |
| 528 else x = to; | |
| 529 if (*x == '\0') return true; // always allow covering addresses with no domain name, eg abuse@ | |
|
100
63e8633abc34
allow empty env_to at global context to remove all restrictions on child contexts
carl
parents:
99
diff
changeset
|
530 if (!parent && env_to.empty()) return true; // empty env_to at global level covers everything |
| 94 | 531 string_set::iterator i = env_to.find(x); |
| 532 if (i != env_to.end()) return true; | |
| 533 return false; | |
| 534 } | |
| 535 | |
| 536 | |
| 537 VERIFYP CONTEXT::find_verify(char *to) { | |
| 538 if (verify_host && (verify_host != token_myhostname) && cover_env_to(to)) { | |
| 539 verify_map::iterator i = verifiers.find(verify_host); | |
| 540 if (i == verifiers.end()) { | |
| 541 if (debug_syslog) { | |
| 542 char buf[maxlen]; | |
| 543 snprintf(buf, maxlen, "cannot find struc for %s", verify_host); | |
| 544 my_syslog(buf); | |
| 545 } | |
| 546 return NULL; | |
| 547 } | |
| 548 VERIFYP v = (*i).second; | |
| 549 | |
| 550 return v; | |
| 551 } | |
| 552 else if (parent) return parent->find_verify(to); | |
| 553 else return NULL; | |
| 554 } | |
| 555 | |
| 556 | |
| 136 | 557 int CONTEXT::find_rate(char *user) { |
| 558 if (rcpt_per_hour.empty()) return INT_MAX; | |
| 559 rcpt_rates::iterator i = rcpt_per_hour.find(user); | |
| 560 if (i == rcpt_per_hour.end()) i = rcpt_per_hour.find(" "); | |
| 561 return (i == rcpt_per_hour.end()) ? INT_MAX : (*i).second; | |
| 562 } | |
| 563 | |
| 564 | |
| 94 | 565 char *CONTEXT::find_from(char *from) { |
| 566 char *rc = token_inherit; | |
| 567 string_map::iterator i = env_from.find(from); | |
| 117 | 568 if (i != env_from.end()) rc = (*i).second; // found user@domain key |
| 94 | 569 else { |
| 570 char *x = strchr(from, '@'); | |
| 571 if (x) { | |
| 572 x++; | |
| 573 i = env_from.find(x); | |
| 117 | 574 if (i != env_from.end()) rc = (*i).second; // found domain key |
| 94 | 575 else { |
| 576 char y = *x; | |
| 577 *x = '\0'; | |
| 578 i = env_from.find(from); | |
| 579 *x = y; | |
| 580 if (i != env_from.end()) rc = (*i).second; // found user@ key | |
| 581 } | |
| 582 } | |
| 583 } | |
| 584 if (rc == token_inherit) rc = env_from_default; | |
| 585 if ((rc == token_inherit) && parent) return parent->find_from(from); | |
| 586 return (rc == token_inherit) ? token_unknown : rc; | |
| 587 } | |
| 588 | |
| 589 | |
| 590 CONTEXTP CONTEXT::find_context(char *from) { | |
| 591 context_map::iterator i = env_from_context.find(from); | |
| 117 | 592 if (i != env_from_context.end()) return (*i).second; // found user@domain key |
| 94 | 593 char *x = strchr(from, '@'); |
| 594 if (x) { | |
| 595 x++; | |
| 596 i = env_from_context.find(x); | |
| 117 | 597 if (i != env_from_context.end()) return (*i).second; // found domain key |
| 94 | 598 char y = *x; |
| 599 *x = '\0'; | |
| 600 i = env_from_context.find(from); | |
| 601 *x = y; | |
| 602 if (i != env_from_context.end()) return (*i).second; // found user@ key | |
| 603 } | |
| 604 return this; | |
| 605 } | |
| 606 | |
| 607 | |
| 608 CONTEXTP CONTEXT::find_from_context_name(char *name) { | |
| 609 context_map::iterator i = children.find(name); | |
| 610 if (i != children.end()) return (*i).second; | |
| 611 return NULL; | |
| 612 } | |
| 613 | |
| 614 | |
| 615 DNSBLP CONTEXT::find_dnsbl(char *name) { | |
| 616 dnsblp_map::iterator i = dnsbl_names.find(name); | |
| 617 if (i != dnsbl_names.end()) return (*i).second; | |
| 618 if (parent) return parent->find_dnsbl(name); | |
| 619 return NULL; | |
| 620 } | |
| 621 | |
| 622 | |
| 623 char* CONTEXT::get_content_suffix() { | |
| 624 if (!content_suffix && parent) return parent->get_content_suffix(); | |
| 625 return content_suffix; | |
| 626 } | |
| 627 | |
| 628 | |
| 119 | 629 char* CONTEXT::get_uribl_suffix() { |
| 630 if (!uribl_suffix && parent) return parent->get_uribl_suffix(); | |
| 631 return uribl_suffix; | |
| 632 } | |
| 633 | |
| 634 | |
| 94 | 635 char* CONTEXT::get_content_message() { |
| 636 if (!content_message && parent) return parent->get_content_message(); | |
| 637 return content_message; | |
| 638 } | |
| 639 | |
| 640 | |
| 119 | 641 char* CONTEXT::get_uribl_message() { |
| 642 if (!uribl_message && parent) return parent->get_uribl_message(); | |
| 643 return uribl_message; | |
| 644 } | |
| 645 | |
| 646 | |
| 94 | 647 string_set& CONTEXT::get_content_host_ignore() { |
| 648 if (content_host_ignore.empty() && parent) return parent->get_content_host_ignore(); | |
| 649 return content_host_ignore; | |
| 650 } | |
| 651 | |
| 652 | |
| 117 | 653 string_set& CONTEXT::get_content_cctlds() { |
| 654 if (content_cctlds.empty() && parent) return parent->get_content_cctlds(); | |
| 655 return content_cctlds; | |
| 656 } | |
| 657 | |
| 94 | 658 string_set& CONTEXT::get_content_tlds() { |
| 659 if (content_tlds.empty() && parent) return parent->get_content_tlds(); | |
| 660 return content_tlds; | |
| 661 } | |
| 662 | |
| 663 | |
| 664 string_set& CONTEXT::get_html_tags() { | |
| 665 if (html_tags.empty() && parent) return parent->get_html_tags(); | |
| 666 return html_tags; | |
| 667 } | |
| 668 | |
| 669 | |
| 670 dnsblp_list& CONTEXT::get_dnsbl_list() { | |
| 671 if (dnsbl_list.empty() && parent) return parent->get_dnsbl_list(); | |
| 672 return dnsbl_list; | |
| 673 } | |
| 674 | |
| 675 | |
| 676 bool CONTEXT::acceptable_content(recorder &memory, char *&msg) { | |
| 677 if (memory.excessive_bad_tags(tag_limit)) { | |
| 678 msg = tag_limit_message; | |
| 679 return false; | |
| 680 } | |
| 681 if (!host_random && memory.excessive_hosts(host_limit)) { | |
| 682 msg = host_limit_message; | |
| 683 return false; | |
| 684 } | |
| 685 return true; | |
| 686 } | |
| 687 | |
| 688 | |
| 689 void CONTEXT::dump(int level) { | |
| 690 char indent[maxlen]; | |
| 691 int i = min(maxlen-1, level*4); | |
| 692 memset(indent, ' ', i); | |
| 693 indent[i] = '\0'; | |
| 694 char buf[maxlen]; | |
| 695 char *fullname = get_full_name(buf,maxlen); | |
| 696 printf("%s context %s { \t// %s\n", indent, name, fullname); | |
| 697 | |
| 698 for (dnsblp_map::iterator i=dnsbl_names.begin(); i!=dnsbl_names.end(); i++) { | |
| 699 char *n = (*i).first; | |
| 700 DNSBL &d = *(*i).second; | |
| 701 printf("%s dnsbl %s %s \"%s\"; \n", indent, n, d.suffix, d.message); | |
| 702 } | |
| 703 | |
| 704 if (!dnsbl_list.empty()) { | |
| 705 printf("%s dnsbl_list", indent); | |
| 706 for (dnsblp_list::iterator i=dnsbl_list.begin(); i!=dnsbl_list.end(); i++) { | |
| 707 DNSBL &d = *(*i); | |
| 708 printf(" %s", d.name); | |
| 709 } | |
| 710 printf("; \n"); | |
| 711 } | |
| 712 | |
| 713 if (content_filtering) { | |
| 714 printf("%s content on { \n", indent, env_from_default); | |
| 715 if (content_suffix) { | |
| 716 printf("%s filter %s \"%s\"; \n", indent, content_suffix, content_message); | |
| 717 } | |
| 119 | 718 if (uribl_suffix) { |
| 719 printf("%s uribl %s \"%s\"; \n", indent, uribl_suffix, uribl_message); | |
| 720 } | |
| 94 | 721 if (!content_host_ignore.empty()) { |
| 722 printf("%s ignore { \n", indent); | |
| 723 for (string_set::iterator i=content_host_ignore.begin(); i!=content_host_ignore.end(); i++) { | |
| 724 printf("%s %s; \n", indent, *i); | |
| 725 } | |
| 726 printf("%s }; \n", indent); | |
| 727 } | |
| 117 | 728 if (!content_cctlds.empty()) { |
| 729 printf("%s cctld { \n", indent); | |
| 730 printf("%s ", indent); | |
| 731 for (string_set::iterator i=content_cctlds.begin(); i!=content_cctlds.end(); i++) { | |
| 732 printf("%s; ", *i); | |
| 733 } | |
| 734 printf("\n%s }; \n", indent); | |
| 735 } | |
| 94 | 736 if (!content_tlds.empty()) { |
| 737 printf("%s tld { \n", indent); | |
| 738 printf("%s ", indent); | |
| 739 for (string_set::iterator i=content_tlds.begin(); i!=content_tlds.end(); i++) { | |
| 740 printf("%s; ", *i); | |
| 741 } | |
| 742 printf("\n%s }; \n", indent); | |
| 743 } | |
| 744 if (!html_tags.empty()) { | |
| 745 printf("%s html_tags { \n", indent); | |
| 746 printf("%s ", indent); | |
| 747 for (string_set::iterator i=html_tags.begin(); i!=html_tags.end(); i++) { | |
| 748 printf("%s; ", *i); | |
| 749 } | |
| 750 printf("\n%s }; \n", indent); | |
| 751 } | |
| 752 if (host_limit_message) { | |
| 753 printf("%s host_limit on %d \"%s\"; \n", indent, host_limit, host_limit_message); | |
| 754 } | |
| 755 else if (host_random) { | |
| 756 printf("%s host_limit soft %d; \n", indent, host_limit); | |
| 757 } | |
| 758 else { | |
| 759 printf("%s host_limit off; \n", indent); | |
| 760 } | |
| 761 if (tag_limit_message) { | |
| 762 printf("%s html_limit on %d \"%s\"; \n", indent, tag_limit, tag_limit_message); | |
| 763 } | |
| 764 else { | |
| 765 printf("%s html_limit off; \n", indent); | |
| 766 } | |
| 767 printf("%s }; \n", indent); | |
| 768 } | |
| 769 else { | |
| 770 printf("%s content off {}; \n", indent, env_from_default); | |
| 771 } | |
| 772 | |
| 773 printf("%s env_to { \t// %s\n", indent, fullname); | |
| 774 for (string_set::iterator i=env_to.begin(); i!=env_to.end(); i++) { | |
| 775 printf("%s %s; \n", indent, *i); | |
| 776 } | |
| 777 printf("%s }; \n", indent); | |
| 778 | |
| 779 if (verify_host) { | |
| 780 printf("%s verify %s; \n", indent, verify_host); | |
| 781 } | |
| 782 | |
| 783 for (context_map::iterator i=children.begin(); i!=children.end(); i++) { | |
| 784 CONTEXTP c = (*i).second; | |
| 785 c->dump(level+1); | |
| 786 } | |
| 787 | |
| 788 printf("%s env_from %s { \t// %s\n", indent, env_from_default, fullname); | |
| 789 if (!env_from.empty()) { | |
| 790 printf("%s // white/black/unknown \n", indent); | |
| 791 for (string_map::iterator i=env_from.begin(); i!=env_from.end(); i++) { | |
| 792 char *f = (*i).first; | |
| 793 char *t = (*i).second; | |
| 794 printf("%s %s \t%s; \n", indent, f, t); | |
| 795 } | |
| 796 } | |
| 797 if (!env_from_context.empty()) { | |
| 798 printf("%s // child contexts \n", indent); | |
| 799 for (context_map::iterator j=env_from_context.begin(); j!=env_from_context.end(); j++) { | |
| 800 char *f = (*j).first; | |
| 801 CONTEXTP t = (*j).second; | |
| 802 printf("%s %s \t%s; \n", indent, f, t->name); | |
| 803 } | |
| 804 } | |
| 805 printf("%s }; \n", indent); | |
| 806 | |
| 136 | 807 if (!rcpt_per_hour.empty()) { |
| 808 printf("%s rate_limit { \n", indent); | |
| 809 for (rcpt_rates::iterator j=rcpt_per_hour.begin(); j!=rcpt_per_hour.end(); j++) { | |
| 810 char *u = (*j).first; | |
| 811 int l = (*j).second; | |
| 812 printf("%s \"%s\" \t%d; \n", indent, u, l); | |
| 813 } | |
| 814 printf("%s }; \n", indent); | |
| 815 } | |
| 816 | |
| 94 | 817 printf("%s }; \n", indent); |
| 818 } | |
| 819 | |
| 820 | |
| 821 //////////////////////////////////////////////// | |
| 822 // helper to discard the strings held by a string_set | |
| 823 // | |
| 824 void discard(string_set &s) { | |
| 825 for (string_set::iterator i=s.begin(); i!=s.end(); i++) { | |
| 826 free(*i); | |
| 827 } | |
| 828 s.clear(); | |
| 829 } | |
| 830 | |
| 831 | |
| 832 //////////////////////////////////////////////// | |
| 833 // helper to register a string in a string set | |
| 834 // | |
| 835 char* register_string(string_set &s, char *name) { | |
| 836 string_set::iterator i = s.find(name); | |
| 837 if (i != s.end()) return *i; | |
| 838 char *x = strdup(name); | |
| 839 s.insert(x); | |
| 840 return x; | |
| 841 } | |
| 842 | |
| 843 | |
| 844 //////////////////////////////////////////////// | |
| 845 // register a global string | |
| 846 // | |
| 847 char* register_string(char *name) { | |
| 848 return register_string(all_strings, name); | |
| 849 } | |
| 850 | |
| 851 | |
| 852 //////////////////////////////////////////////// | |
| 853 // | |
| 854 bool tsa(TOKEN &tok, char *token); | |
| 855 bool tsa(TOKEN &tok, char *token) { | |
| 856 char *have = tok.next(); | |
| 857 if (have == token) return true; | |
| 858 tok.token_error(token, have); | |
| 859 return false; | |
| 860 } | |
| 861 | |
| 862 | |
| 863 //////////////////////////////////////////////// | |
| 864 // | |
| 865 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 866 bool parse_dnsbl(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 867 char *name = tok.next(); | |
| 868 char *suf = tok.next(); | |
| 869 char *msg = tok.next(); | |
| 870 if (!tsa(tok, token_semi)) return false; | |
| 871 DNSBLP dnsnew = new DNSBL(name, suf, msg); | |
| 872 DNSBLP dnsold = me.find_dnsbl(name); | |
| 873 if (dnsold && (*dnsold == *dnsnew)) { | |
| 874 // duplicate redefinition, ignore it | |
| 875 delete dnsnew; | |
| 876 return true; | |
| 877 } | |
| 878 me.add_dnsbl(name, dnsnew); | |
| 879 return true; | |
| 880 } | |
| 881 | |
| 882 | |
| 883 //////////////////////////////////////////////// | |
| 884 // | |
| 885 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 886 bool parse_dnsbll(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 887 while (true) { | |
| 888 char *have = tok.next(); | |
| 889 if (!have) break; | |
| 890 if (have == token_semi) break; | |
| 891 DNSBLP dns = me.find_dnsbl(have); | |
| 892 if (dns) { | |
| 893 me.add_dnsbl(dns); | |
| 894 } | |
| 895 else { | |
| 896 tok.token_error("dnsbl name", have); | |
| 897 return false; | |
| 898 } | |
| 899 } | |
| 900 return true; | |
| 901 } | |
| 902 | |
| 903 | |
| 904 //////////////////////////////////////////////// | |
| 905 // | |
| 906 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 907 bool parse_content(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 908 char *setting = tok.next(); | |
| 909 if (setting == token_on) { | |
| 910 me.set_content_filtering(true); | |
| 911 } | |
| 912 else if (setting == token_off) { | |
| 913 me.set_content_filtering(false); | |
| 914 } | |
| 915 else { | |
| 916 tok.token_error("on/off", setting); | |
| 917 return false; | |
| 918 } | |
| 919 if (!tsa(tok, token_lbrace)) return false; | |
| 920 while (true) { | |
| 921 char *have = tok.next(); | |
| 922 if (!have) break; | |
| 923 if (have == token_filter) { | |
| 924 char *suffix = tok.next(); | |
| 925 char *messag = tok.next(); | |
| 926 me.set_content_suffix(suffix); | |
| 927 me.set_content_message(messag); | |
| 928 if (!tsa(tok, token_semi)) return false; | |
| 929 } | |
| 119 | 930 else if (have == token_uribl) { |
| 931 char *suffix = tok.next(); | |
| 932 char *messag = tok.next(); | |
| 933 me.set_uribl_suffix(suffix); | |
| 934 me.set_uribl_message(messag); | |
| 935 if (!tsa(tok, token_semi)) return false; | |
| 936 } | |
| 94 | 937 else if (have == token_ignore) { |
| 938 if (!tsa(tok, token_lbrace)) return false; | |
| 939 while (true) { | |
| 940 if (!have) break; | |
| 941 char *have = tok.next(); | |
| 942 if (have == token_rbrace) break; // done | |
| 943 me.add_ignore(have); | |
| 944 } | |
| 945 if (!tsa(tok, token_semi)) return false; | |
| 946 } | |
| 117 | 947 else if (have == token_cctld) { |
| 948 if (!tsa(tok, token_lbrace)) return false; | |
| 949 while (true) { | |
| 950 char *have = tok.next(); | |
| 951 if (!have) break; | |
| 952 if (have == token_rbrace) break; // done | |
| 953 me.add_cctld(have); | |
| 954 } | |
| 955 if (!tsa(tok, token_semi)) return false; | |
| 956 } | |
| 94 | 957 else if (have == token_tld) { |
| 958 if (!tsa(tok, token_lbrace)) return false; | |
| 959 while (true) { | |
| 960 char *have = tok.next(); | |
| 961 if (!have) break; | |
| 962 if (have == token_rbrace) break; // done | |
| 963 me.add_tld(have); | |
| 964 } | |
| 965 if (!tsa(tok, token_semi)) return false; | |
| 966 } | |
| 967 else if (have == token_html_limit) { | |
| 968 have = tok.next(); | |
| 969 if (have == token_on) { | |
| 970 me.set_tag_limit(tok.nextint()); | |
| 971 me.set_tag_message(tok.next()); | |
| 972 } | |
| 973 else if (have == token_off) { | |
| 974 me.set_tag_limit(0); | |
| 975 me.set_tag_message(NULL); | |
| 976 } | |
| 977 else { | |
| 978 tok.token_error("on/off", have); | |
| 979 return false; | |
| 980 } | |
| 981 if (!tsa(tok, token_semi)) return false; | |
| 982 } | |
| 983 else if (have == token_html_tags) { | |
| 984 if (!tsa(tok, token_lbrace)) return false; | |
| 985 while (true) { | |
| 986 char *have = tok.next(); | |
| 987 if (!have) break; | |
| 988 if (have == token_rbrace) { | |
| 989 break; // done | |
| 990 } | |
| 991 else { | |
| 992 me.add_tag(have); // base version | |
| 993 char buf[200]; | |
| 994 snprintf(buf, sizeof(buf), "/%s", have); | |
| 995 me.add_tag(register_string(buf)); // leading / | |
| 996 snprintf(buf, sizeof(buf), "%s/", have); | |
| 997 me.add_tag(register_string(buf)); // trailing / | |
| 998 } | |
| 999 } | |
| 1000 if (!tsa(tok, token_semi)) return false; | |
| 1001 } | |
| 1002 else if (have == token_host_limit) { | |
| 1003 have = tok.next(); | |
| 1004 if (have == token_on) { | |
| 1005 me.set_host_limit(tok.nextint()); | |
| 1006 me.set_host_message(tok.next()); | |
| 1007 me.set_host_random(false); | |
| 1008 } | |
| 1009 else if (have == token_off) { | |
| 1010 me.set_host_limit(0); | |
| 1011 me.set_host_message(NULL); | |
| 1012 me.set_host_random(false); | |
| 1013 } | |
| 1014 else if (have == token_soft) { | |
| 1015 me.set_host_limit(tok.nextint()); | |
| 1016 me.set_host_message(NULL); | |
| 1017 me.set_host_random(true); | |
| 1018 } | |
| 1019 else { | |
| 1020 tok.token_error("on/off/soft", have); | |
| 1021 return false; | |
| 1022 } | |
| 1023 if (!tsa(tok, token_semi)) return false; | |
| 1024 } | |
| 1025 else if (have == token_rbrace) { | |
| 1026 break; // done | |
| 1027 } | |
| 1028 else { | |
| 1029 tok.token_error("content keyword", have); | |
| 1030 return false; | |
| 1031 } | |
| 1032 } | |
| 1033 return tsa(tok, token_semi); | |
| 1034 } | |
| 1035 | |
| 1036 | |
| 1037 //////////////////////////////////////////////// | |
| 1038 // | |
| 1039 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1040 bool parse_envto(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1041 if (!tsa(tok, token_lbrace)) return false; | |
| 1042 while (true) { | |
| 1043 char *have = tok.next(); | |
| 1044 if (!have) break; | |
| 1045 if (have == token_rbrace) break; | |
| 1046 if (have == token_semi) { | |
| 1047 // optional separators | |
| 1048 } | |
| 1049 else if (have == token_dccto) { | |
| 1050 char *flavor = tok.next(); | |
| 1051 if (!tsa(tok, token_lbrace)) return false; | |
| 1052 bool keeping = false; | |
| 1053 while (true) { | |
| 1054 char *have = tok.next(); | |
| 1055 if (!have) break; | |
| 1056 if (have == token_rbrace) break; | |
| 1057 if (have == flavor) { | |
| 1058 keeping = true; | |
| 1059 continue; | |
| 1060 } | |
| 1061 else if ((have == token_ok) || (have == token_ok2) || (have == token_many)) { | |
| 1062 keeping = false; | |
| 1063 continue; | |
| 1064 } | |
| 1065 if (have == token_envto) { | |
| 1066 have = tok.next(); | |
| 1067 if (keeping) { | |
| 1068 if (me.allow_env_to(have)) { | |
| 1069 me.add_to(have); | |
| 1070 dc.add_to(have, &me); | |
| 1071 } | |
| 1072 } | |
| 1073 } | |
| 1074 //else if (have == token_substitute) { | |
| 1075 // if (tok.next() == token_mailhost) { | |
| 1076 // have = tok.next(); | |
| 1077 // if (keeping) { | |
| 1078 // if (me.allow_env_to(have)) { | |
| 1079 // me.add_to(have); | |
| 1080 // dc.add_to(have, &me); | |
| 1081 // } | |
| 1082 // } | |
| 1083 // } | |
| 1084 //} | |
| 1085 tok.skipeol(); | |
| 1086 } | |
| 1087 } | |
| 1088 else if (me.allow_env_to(have)) { | |
| 1089 me.add_to(have); | |
| 1090 dc.add_to(have, &me); | |
| 1091 } | |
| 1092 else { | |
| 1093 tok.token_error("user@ or user@domain.tld or domain.tld where domain.tld allowed by parent context", have); | |
| 1094 return false; | |
| 1095 } | |
| 1096 } | |
| 1097 return tsa(tok, token_semi); | |
| 1098 } | |
| 1099 | |
| 1100 | |
| 1101 //////////////////////////////////////////////// | |
| 1102 // | |
| 1103 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1104 bool parse_verify(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1105 char *host = tok.next(); | |
| 1106 if (!tsa(tok, token_semi)) return false; | |
| 1107 me.set_verify(host); | |
| 1108 add_verify_host(host); | |
| 99 | 1109 return true; |
| 94 | 1110 } |
| 1111 | |
| 1112 | |
| 1113 //////////////////////////////////////////////// | |
| 1114 // | |
| 1115 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me); | |
| 1116 bool parse_envfrom(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1117 char *st = tok.next(); | |
| 1118 if ((st == token_black) || (st == token_white) || (st == token_unknown) || (st == token_inherit)) { | |
| 1119 me.set_from_default(st); | |
| 1120 } | |
| 1121 else { | |
| 1122 tok.push(st); | |
| 1123 } | |
| 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; | |
| 1129 if (have == token_semi) { | |
| 1130 // optional separators | |
| 1131 } | |
| 1132 else if (have == token_dccfrom) { | |
| 1133 if (!tsa(tok, token_lbrace)) return false; | |
| 1134 bool keeping = false; | |
| 1135 bool many = false; | |
| 1136 while (true) { | |
| 1137 char *have = tok.next(); | |
| 1138 if (!have) break; | |
| 1139 if (have == token_rbrace) break; | |
| 1140 if (have == token_ok) { | |
| 1141 keeping = true; | |
| 1142 many = false; | |
| 1143 continue; | |
| 1144 } | |
| 1145 else if (have == token_many) { | |
| 1146 keeping = true; | |
| 1147 many = true; | |
| 1148 continue; | |
| 1149 } | |
| 1150 else if (have == token_ok2) { | |
| 1151 keeping = false; | |
| 1152 continue; | |
| 1153 } | |
| 1154 if (have == token_envfrom) { | |
| 1155 have = tok.next(); | |
| 1156 if (keeping) { | |
| 1157 me.add_from(have, (many) ? token_black : token_white); | |
| 1158 } | |
| 1159 } | |
| 1160 else if (have == token_substitute) { | |
| 1161 if (tok.next() == token_mailhost) { | |
| 1162 have = tok.next(); | |
| 1163 me.add_from(have, (many) ? token_black : token_white); | |
| 1164 } | |
| 1165 } | |
| 1166 tok.skipeol(); | |
| 1167 } | |
| 1168 } | |
| 1169 else { | |
| 1170 // may be a valid email address or domain name | |
| 1171 char *st = tok.next(); | |
| 1172 if ((st == token_black) || (st == token_white) || (st == token_unknown)) { | |
| 1173 me.add_from(have, st); | |
| 1174 } | |
| 1175 else { | |
| 1176 CONTEXTP con = me.find_from_context_name(st); | |
| 1177 if (con) { | |
| 1178 me.add_from_context(have, con); | |
| 1179 } | |
| 1180 else { | |
| 1181 tok.token_error("white/black/unknown or child context name", st); | |
| 1182 return false; | |
| 1183 } | |
| 1184 } | |
| 1185 } | |
| 1186 } | |
| 1187 return tsa(tok, token_semi); | |
| 1188 } | |
| 1189 | |
| 1190 | |
| 1191 //////////////////////////////////////////////// | |
| 1192 // | |
| 136 | 1193 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me); |
| 1194 bool parse_rate(TOKEN &tok, CONFIG &dc, CONTEXT &me) { | |
| 1195 if (!tsa(tok, token_lbrace)) return false; | |
| 1196 while (true) { | |
| 1197 char *have = tok.next(); | |
| 1198 if (!have) break; | |
| 1199 if (have == token_rbrace) break; | |
| 1200 if (have == token_semi) { | |
| 1201 // optional separators | |
| 1202 } | |
| 1203 else { | |
| 1204 char *limit = tok.next(); | |
| 1205 int lim = (limit) ? atoi(limit) : 0; | |
| 1206 me.add_rate(have, lim); | |
| 1207 } | |
| 1208 } | |
| 1209 return tsa(tok, token_semi); | |
| 1210 } | |
| 1211 | |
| 1212 | |
| 1213 //////////////////////////////////////////////// | |
| 1214 // | |
| 94 | 1215 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent); |
| 1216 bool parse_context(TOKEN &tok, CONFIG &dc, CONTEXTP parent) { | |
| 1217 char *name = tok.next(); | |
| 1218 if (!tsa(tok, token_lbrace)) return false; | |
| 1219 CONTEXTP con = new CONTEXT(parent, name); | |
| 1220 | |
| 1221 while (true) { | |
| 1222 char *have = tok.next(); | |
| 1223 if (!have) break; | |
| 1224 if (have == token_rbrace) break; // done | |
| 1225 if (have == token_dnsbl) { | |
| 1226 if (!parse_dnsbl(tok, dc, *con)) return false; | |
| 1227 } | |
| 1228 else if (have == token_dnsbll) { | |
| 1229 if (!parse_dnsbll(tok, dc, *con)) return false; | |
| 1230 } | |
| 1231 else if (have == token_content) { | |
| 1232 if (!parse_content(tok, dc, *con)) return false; | |
| 1233 } | |
| 1234 else if (have == token_envto) { | |
| 1235 if (!parse_envto(tok, dc, *con)) return false; | |
| 1236 } | |
| 1237 else if (have == token_verify) { | |
| 1238 if (!parse_verify(tok, dc, *con)) return false; | |
| 1239 } | |
| 1240 else if (have == token_envfrom) { | |
| 1241 if (!parse_envfrom(tok, dc, *con)) return false; | |
| 1242 } | |
| 136 | 1243 else if ((have == token_rate) && (!parent) && (!dc.default_context)) { |
| 1244 if (!parse_rate(tok, dc, *con)) return false; | |
| 1245 } | |
| 94 | 1246 else if (have == token_context) { |
| 1247 if (!parse_context(tok, dc, con)) return false; | |
| 1248 } | |
| 1249 else { | |
| 1250 tok.token_error("context keyword", have); | |
| 1251 return false; | |
| 1252 } | |
| 1253 } | |
| 1254 | |
| 1255 if (!tsa(tok, token_semi)) { | |
| 1256 delete con; | |
| 1257 return false; | |
| 1258 } | |
| 1259 dc.add_context(con); | |
| 1260 if (parent) parent->add_context(con); | |
| 1261 return true; | |
| 1262 } | |
| 1263 | |
| 1264 | |
| 1265 //////////////////////////////////////////////// | |
| 1266 // parse a config file | |
| 1267 // | |
| 1268 bool load_conf(CONFIG &dc, char *fn) { | |
| 99 | 1269 int count = 0; |
| 94 | 1270 TOKEN tok(fn, &dc.config_files); |
| 1271 while (true) { | |
| 1272 char *have = tok.next(); | |
| 1273 if (!have) break; | |
| 1274 if (have == token_context) { | |
| 1275 if (!parse_context(tok, dc, NULL)) { | |
| 99 | 1276 tok.token_error("load_conf() failed to parse context"); |
| 94 | 1277 return false; |
| 1278 } | |
| 99 | 1279 else count++; |
| 94 | 1280 } |
| 1281 else { | |
| 1282 tok.token_error(token_context, have); | |
| 1283 return false; | |
| 1284 } | |
| 1285 } | |
| 99 | 1286 tok.token_error("load_conf() found %d contexts in %s", count, fn); |
| 94 | 1287 return (dc.default_context) ? true : false; |
| 1288 } | |
| 1289 | |
| 1290 | |
| 1291 //////////////////////////////////////////////// | |
| 1292 // setup a new smtp verify host | |
| 1293 // | |
| 1294 void add_verify_host(char *host) { | |
| 1295 verify_map::iterator i = verifiers.find(host); | |
| 1296 if (i == verifiers.end()) { | |
| 1297 VERIFYP v = new VERIFY(host); | |
| 1298 verifiers[host] = v; | |
| 1299 } | |
| 1300 } | |
| 1301 | |
| 1302 | |
| 1303 //////////////////////////////////////////////// | |
| 1304 // thread to check for verify hosts with old sockets that we can close | |
| 1305 // | |
| 1306 void* verify_closer(void *arg) { | |
| 1307 while (true) { | |
| 1308 sleep(maxage); | |
| 1309 for (verify_map::iterator i=verifiers.begin(); i!=verifiers.end(); i++) { | |
| 1310 VERIFYP v = (*i).second; | |
| 1311 v->closer(); | |
| 1312 } | |
| 1313 } | |
| 1314 return NULL; | |
| 1315 } | |
| 1316 | |
| 1317 | |
| 1318 //////////////////////////////////////////////// | |
| 1319 // init the tokens | |
| 1320 // | |
| 1321 void token_init() { | |
| 1322 token_black = register_string("black"); | |
| 117 | 1323 token_cctld = register_string("cctld"); |
| 94 | 1324 token_content = register_string("content"); |
| 1325 token_context = register_string("context"); | |
| 1326 token_dccfrom = register_string("dcc_from"); | |
| 1327 token_dccto = register_string("dcc_to"); | |
| 1328 token_default = register_string("default"); | |
| 1329 token_dnsbl = register_string("dnsbl"); | |
| 1330 token_dnsbll = register_string("dnsbl_list"); | |
| 1331 token_envfrom = register_string("env_from"); | |
| 1332 token_envto = register_string("env_to"); | |
| 1333 token_filter = register_string("filter"); | |
| 1334 token_host_limit = register_string("host_limit"); | |
| 1335 token_html_limit = register_string("html_limit"); | |
| 1336 token_html_tags = register_string("html_tags"); | |
| 1337 token_ignore = register_string("ignore"); | |
| 1338 token_include = register_string("include"); | |
| 1339 token_inherit = register_string("inherit"); | |
| 1340 token_lbrace = register_string("{"); | |
| 1341 token_mailhost = register_string("mail_host"); | |
| 1342 token_many = register_string("many"); | |
| 1343 token_off = register_string("off"); | |
| 1344 token_ok = register_string("ok"); | |
| 1345 token_ok2 = register_string("ok2"); | |
| 1346 token_on = register_string("on"); | |
| 136 | 1347 token_rate = register_string("rate_limit"); |
| 94 | 1348 token_rbrace = register_string("}"); |
| 1349 token_semi = register_string(";"); | |
| 1350 token_soft = register_string("soft"); | |
| 1351 token_substitute = register_string("substitute"); | |
| 1352 token_tld = register_string("tld"); | |
| 1353 token_unknown = register_string("unknown"); | |
| 119 | 1354 token_uribl = register_string("uribl"); |
| 94 | 1355 token_verify = register_string("verify"); |
| 1356 token_white = register_string("white"); | |
| 1357 | |
| 1358 if (gethostname(myhostname, HOST_NAME_MAX+1) != 0) { | |
| 1359 strncpy(myhostname, "localhost", HOST_NAME_MAX+1); | |
| 1360 } | |
| 1361 myhostname[HOST_NAME_MAX] = '\0'; // ensure null termination | |
| 1362 token_myhostname = register_string(myhostname); | |
| 1363 } |