| 1 |
/* Mixmaster version 3 -- (C) 1999 Anonymizer Inc.
|
| 2 |
|
| 3 |
Mixmaster may be redistributed and modified under certain conditions.
|
| 4 |
This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF
|
| 5 |
ANY KIND, either express or implied. See the file COPYRIGHT for
|
| 6 |
details.
|
| 7 |
|
| 8 |
Socket-based mail transport services
|
| 9 |
$Id: mail.c,v 1.14 2002/09/25 23:02:44 ulfm Exp $ */
|
| 10 |
|
| 11 |
|
| 12 |
#include "mix3.h"
|
| 13 |
#include <stdio.h>
|
| 14 |
#include <stdlib.h>
|
| 15 |
#include <string.h>
|
| 16 |
|
| 17 |
#if defined(UNIX) && defined(USE_SOCK)
|
| 18 |
#include <unistd.h>
|
| 19 |
#include <sys/types.h>
|
| 20 |
#include <sys/socket.h>
|
| 21 |
#include <netinet/in.h>
|
| 22 |
#include <arpa/inet.h>
|
| 23 |
#include <netdb.h>
|
| 24 |
#endif /* defined(UNIX) && defined(USE_SOCK) */
|
| 25 |
|
| 26 |
#include <fcntl.h>
|
| 27 |
#include <time.h>
|
| 28 |
#include <sys/stat.h>
|
| 29 |
#include <errno.h>
|
| 30 |
|
| 31 |
|
| 32 |
int sendinfofile(char *name, char *logname, BUFFER *address, BUFFER *header)
|
| 33 |
{
|
| 34 |
FILE *f = NULL, *log = NULL;
|
| 35 |
BUFFER *msg, *addr;
|
| 36 |
char line[LINELEN];
|
| 37 |
int ret = -1;
|
| 38 |
|
| 39 |
if (bufeq(address, ANONNAME))
|
| 40 |
return (0); /* don't reply to our own anon messages */
|
| 41 |
f = mix_openfile(name, "r");
|
| 42 |
if (f == NULL)
|
| 43 |
return (-1);
|
| 44 |
|
| 45 |
addr = buf_new();
|
| 46 |
rfc822_addr(address, addr);
|
| 47 |
if (addr->length == 0)
|
| 48 |
buf_set(addr, address), buf_nl(addr);
|
| 49 |
|
| 50 |
if (logname != NULL) {
|
| 51 |
if ((log = mix_openfile(logname, "r+")) != NULL) {
|
| 52 |
/* log recipients to prevent mail loop */
|
| 53 |
while (fgets(line, sizeof(line), log) != NULL)
|
| 54 |
if (strieq(line, addr->data))
|
| 55 |
goto end;
|
| 56 |
} else if ((log = mix_openfile(logname, "w")) == NULL) {
|
| 57 |
errlog(ERRORMSG, "Can't create %s.\n", logname);
|
| 58 |
ret = -1;
|
| 59 |
goto end;
|
| 60 |
}
|
| 61 |
fprintf(log, "%s", addr->data);
|
| 62 |
}
|
| 63 |
msg = buf_new();
|
| 64 |
if (header)
|
| 65 |
buf_cat(msg, header), buf_nl(msg);
|
| 66 |
while (fgets(line, sizeof(line), f) != NULL) {
|
| 67 |
if (streq(line, "DESTINATION-BLOCK\n"))
|
| 68 |
buf_appendf(msg, "destination-block %b", addr);
|
| 69 |
else
|
| 70 |
buf_appends(msg, line);
|
| 71 |
}
|
| 72 |
ret = sendmail(msg, REMAILERNAME, address);
|
| 73 |
buf_free(msg);
|
| 74 |
end:
|
| 75 |
if (f)
|
| 76 |
fclose(f);
|
| 77 |
if (log)
|
| 78 |
fclose(log);
|
| 79 |
buf_free(addr);
|
| 80 |
return (ret);
|
| 81 |
}
|
| 82 |
|
| 83 |
int smtpsend(BUFFER *head, BUFFER *message, char *from);
|
| 84 |
|
| 85 |
|
| 86 |
int sendmail_loop(BUFFER *message, char *from, BUFFER *address)
|
| 87 |
{
|
| 88 |
BUFFER *msg;
|
| 89 |
int err;
|
| 90 |
|
| 91 |
msg = buf_new();
|
| 92 |
buf_appendf(msg, "X-Loop: %s\n", REMAILERADDR);
|
| 93 |
buf_cat(msg, message);
|
| 94 |
err = sendmail(msg, from, address);
|
| 95 |
buf_free(msg);
|
| 96 |
|
| 97 |
return(err);
|
| 98 |
}
|
| 99 |
|
| 100 |
int sendmail(BUFFER *message, char *from, BUFFER *address)
|
| 101 |
{
|
| 102 |
/* returns: 0: ok 1: problem, try again -1: failed */
|
| 103 |
|
| 104 |
BUFFER *head, *block;
|
| 105 |
FILE *f;
|
| 106 |
int err = -1;
|
| 107 |
|
| 108 |
head = buf_new();
|
| 109 |
|
| 110 |
block = readdestblk( );
|
| 111 |
if ( !block ) block = buf_new( );
|
| 112 |
|
| 113 |
if (address != NULL &&
|
| 114 |
(address->length == 0 || doblock(address, block, 1) == -1))
|
| 115 |
goto end;
|
| 116 |
|
| 117 |
if (from != NULL) {
|
| 118 |
buf_setf(head, "From: %s", from);
|
| 119 |
hdr_encode(head, 255);
|
| 120 |
buf_nl(head);
|
| 121 |
}
|
| 122 |
if (address != NULL)
|
| 123 |
buf_appendf(head, "To: %b\n", address);
|
| 124 |
|
| 125 |
buf_rewind(message);
|
| 126 |
|
| 127 |
if (SMTPRELAY[0])
|
| 128 |
err = smtpsend(head, message, from);
|
| 129 |
else if (strieq(SENDMAIL, "outfile")) {
|
| 130 |
char path[PATHMAX];
|
| 131 |
FILE *f = NULL;
|
| 132 |
#ifdef SHORTNAMES
|
| 133 |
int i;
|
| 134 |
for (i = 0; i < 10000; i++) {
|
| 135 |
path[0] = '\0';
|
| 136 |
snprintf(path, PATHMAX, "%s%cout%i.txt", POOLDIR, DIRSEP, i);
|
| 137 |
path[PATHMAX-1] = '\0';
|
| 138 |
f = fopen(path, "r");
|
| 139 |
if (f)
|
| 140 |
fclose(f);
|
| 141 |
else
|
| 142 |
break;
|
| 143 |
}
|
| 144 |
f = fopen(path, "w");
|
| 145 |
#else /* end of SHORTNAMES */
|
| 146 |
static unsigned long namecounter = 0;
|
| 147 |
struct stat statbuf;
|
| 148 |
int count;
|
| 149 |
char hostname[64];
|
| 150 |
|
| 151 |
hostname[0] = '\0';
|
| 152 |
gethostname(hostname, 63);
|
| 153 |
hostname[63] = '\0';
|
| 154 |
|
| 155 |
/* Step 2: Stat the file. Wait for ENOENT as a response. */
|
| 156 |
for (count = 0;; count++) {
|
| 157 |
path[0] = '\0';
|
| 158 |
snprintf(path, PATHMAX, "%s%cout.%lu.%u_%lu.%s,S=%lu.txt",
|
| 159 |
POOLDIR, DIRSEP, time(NULL), getpid(), namecounter++, hostname, head->length + message->length);
|
| 160 |
path[PATHMAX-1] = '\0';
|
| 161 |
|
| 162 |
if (stat(path, &statbuf) == 0)
|
| 163 |
errno = EEXIST;
|
| 164 |
else if (errno == ENOENT) { /* create the file (at least try) */
|
| 165 |
f = fopen(path, "w");
|
| 166 |
if (f != NULL)
|
| 167 |
break; /* we managed to open the file */
|
| 168 |
}
|
| 169 |
if (count > 5)
|
| 170 |
break; /* Too many retries - give up */
|
| 171 |
#ifdef WIN32
|
| 172 |
Sleep(2000); /* sleep and retry */
|
| 173 |
#else /* end of WIN32 */
|
| 174 |
sleep(2); /* sleep and retry */
|
| 175 |
#endif /* else not WIN32 */
|
| 176 |
}
|
| 177 |
#endif /* else not SHORTNAMES */
|
| 178 |
if (f != NULL) {
|
| 179 |
err = buf_write(head, f);
|
| 180 |
err = buf_write(message, f);
|
| 181 |
fclose(f);
|
| 182 |
} else
|
| 183 |
errlog(ERRORMSG, "Can't create %s!\n", path);
|
| 184 |
} else {
|
| 185 |
if (SENDANONMAIL[0] != '\0' && (from == NULL || streq(from, ANONNAME)))
|
| 186 |
f = openpipe(SENDANONMAIL);
|
| 187 |
else
|
| 188 |
f = openpipe(SENDMAIL);
|
| 189 |
if (f != NULL) {
|
| 190 |
err = buf_write(head, f);
|
| 191 |
err = buf_write(message, f);
|
| 192 |
closepipe(f);
|
| 193 |
}
|
| 194 |
}
|
| 195 |
if (err != 0)
|
| 196 |
err = 1; /* error while sending, retry later */
|
| 197 |
end:
|
| 198 |
buf_free(block);
|
| 199 |
buf_free(head);
|
| 200 |
return (err);
|
| 201 |
}
|
| 202 |
|
| 203 |
/* socket communication **********************************************/
|
| 204 |
|
| 205 |
#ifdef USE_SOCK
|
| 206 |
#ifdef WIN32
|
| 207 |
WSADATA w;
|
| 208 |
|
| 209 |
int sock_init()
|
| 210 |
{
|
| 211 |
if (WSAStartup(MAKEWORD(2, 0), &w) != 0) {
|
| 212 |
errlog(ERRORMSG, "Unable to initialize WINSOCK.\n");
|
| 213 |
return 0;
|
| 214 |
}
|
| 215 |
return 1;
|
| 216 |
}
|
| 217 |
|
| 218 |
void sock_exit(void)
|
| 219 |
{
|
| 220 |
WSACleanup();
|
| 221 |
}
|
| 222 |
#endif /* WIN32 */
|
| 223 |
|
| 224 |
SOCKET opensocket(char *hostname, int port)
|
| 225 |
{
|
| 226 |
struct hostent *hp;
|
| 227 |
struct sockaddr_in server;
|
| 228 |
SOCKET s;
|
| 229 |
|
| 230 |
if ((hp = gethostbyname(hostname)) == NULL)
|
| 231 |
return (INVALID_SOCKET);
|
| 232 |
|
| 233 |
memset((char *) &server, 0, sizeof(server));
|
| 234 |
server.sin_family = AF_INET;
|
| 235 |
server.sin_addr.s_addr = *(unsigned long *) hp->h_addr;
|
| 236 |
server.sin_port = htons((unsigned short) port);
|
| 237 |
|
| 238 |
s = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
|
| 239 |
if (s != INVALID_SOCKET)
|
| 240 |
if (connect(s, (struct sockaddr *) &server, sizeof(server)) < 0) {
|
| 241 |
closesocket(s);
|
| 242 |
return (INVALID_SOCKET);
|
| 243 |
}
|
| 244 |
return (s);
|
| 245 |
}
|
| 246 |
|
| 247 |
#ifndef WIN32
|
| 248 |
int closesocket(SOCKET s)
|
| 249 |
{
|
| 250 |
return (close(s));
|
| 251 |
}
|
| 252 |
#endif /* ifndef WIN32 */
|
| 253 |
|
| 254 |
int sock_getline(SOCKET s, BUFFER *line)
|
| 255 |
{
|
| 256 |
char c;
|
| 257 |
int ok;
|
| 258 |
|
| 259 |
buf_clear(line);
|
| 260 |
while ((ok = recv(s, &c, 1, 0)) > 0) {
|
| 261 |
if (c == '\n')
|
| 262 |
break;
|
| 263 |
if (c != '\r')
|
| 264 |
buf_appendc(line, c);
|
| 265 |
}
|
| 266 |
if (ok <= 0)
|
| 267 |
return (-1);
|
| 268 |
if (line->length == 0)
|
| 269 |
return (1);
|
| 270 |
return (0);
|
| 271 |
}
|
| 272 |
|
| 273 |
int sock_cat(SOCKET s, BUFFER *b)
|
| 274 |
{
|
| 275 |
int p = 0, n;
|
| 276 |
|
| 277 |
do {
|
| 278 |
n = send(s, b->data, b->length, 0);
|
| 279 |
if (n < 0)
|
| 280 |
return (-1);
|
| 281 |
p += n;
|
| 282 |
} while (p < b->length);
|
| 283 |
return (0);
|
| 284 |
}
|
| 285 |
#else /* end of USE_SOCK */
|
| 286 |
SOCKET opensocket(char *hostname, int port)
|
| 287 |
{
|
| 288 |
return (INVALID_SOCKET);
|
| 289 |
}
|
| 290 |
|
| 291 |
int closesocket(SOCKET s)
|
| 292 |
{
|
| 293 |
return (INVALID_SOCKET);
|
| 294 |
}
|
| 295 |
|
| 296 |
int sock_getline(SOCKET s, BUFFER *line)
|
| 297 |
{
|
| 298 |
return (-1);
|
| 299 |
}
|
| 300 |
|
| 301 |
int sock_cat(SOCKET s, BUFFER *b)
|
| 302 |
{
|
| 303 |
return (-1);
|
| 304 |
}
|
| 305 |
#endif /* else not USE_SOCK */
|
| 306 |
|
| 307 |
/* send messages by SMTP ************************************************/
|
| 308 |
|
| 309 |
static int sock_getsmtp(SOCKET s, BUFFER *response)
|
| 310 |
{
|
| 311 |
int ret;
|
| 312 |
BUFFER *line;
|
| 313 |
line = buf_new();
|
| 314 |
|
| 315 |
buf_clear(response);
|
| 316 |
do {
|
| 317 |
ret = sock_getline(s, line);
|
| 318 |
buf_cat(response, line);
|
| 319 |
} while (line->length >= 4 && line->data[3] == '-');
|
| 320 |
buf_free(line);
|
| 321 |
return (ret);
|
| 322 |
}
|
| 323 |
|
| 324 |
SOCKET smtp_open(void)
|
| 325 |
{
|
| 326 |
int s = INVALID_SOCKET;
|
| 327 |
int esmtp = 0;
|
| 328 |
BUFFER *line;
|
| 329 |
|
| 330 |
#ifdef USE_SOCK
|
| 331 |
if (SMTPRELAY[0] != '\0')
|
| 332 |
s = opensocket(SMTPRELAY, 25);
|
| 333 |
if (s != INVALID_SOCKET) {
|
| 334 |
line = buf_new();
|
| 335 |
sock_getsmtp(s, line);
|
| 336 |
if (bufifind(line, "ESMTP"))
|
| 337 |
esmtp = 1;
|
| 338 |
if (line->data[0] != '2') {
|
| 339 |
errlog(ERRORMSG, "SMTP relay not ready. %b\n", line);
|
| 340 |
closesocket(s);
|
| 341 |
s = INVALID_SOCKET;
|
| 342 |
} else {
|
| 343 |
errlog(DEBUGINFO, "Opening SMTP connection.\n");
|
| 344 |
if (esmtp)
|
| 345 |
buf_sets(line, "EHLO ");
|
| 346 |
else
|
| 347 |
buf_sets(line, "HELO ");
|
| 348 |
if (HELONAME[0])
|
| 349 |
buf_appends(line, HELONAME);
|
| 350 |
else if (strchr(ENVFROM, '@'))
|
| 351 |
buf_appends(line, strchr(ENVFROM, '@') + 1);
|
| 352 |
else {
|
| 353 |
struct sockaddr_in sa;
|
| 354 |
int len = sizeof(sa);
|
| 355 |
struct hostent *hp;
|
| 356 |
|
| 357 |
if (getsockname(s, (struct sockaddr *) &sa, &len) == 0 &&
|
| 358 |
(hp = gethostbyaddr((char *) &sa.sin_addr, sizeof(sa.sin_addr),
|
| 359 |
AF_INET)) != NULL)
|
| 360 |
buf_appends(line, (char *) hp->h_name);
|
| 361 |
else if (strchr(REMAILERADDR, '@'))
|
| 362 |
buf_appends(line, strchr(REMAILERADDR, '@') + 1);
|
| 363 |
else
|
| 364 |
buf_appends(line, SHORTNAME);
|
| 365 |
}
|
| 366 |
buf_chop(line);
|
| 367 |
buf_appends(line, "\r\n");
|
| 368 |
sock_cat(s, line);
|
| 369 |
sock_getsmtp(s, line);
|
| 370 |
if (line->data[0] != '2') {
|
| 371 |
errlog(ERRORMSG, "SMTP relay refuses HELO: %b\n", line);
|
| 372 |
closesocket(s);
|
| 373 |
s = INVALID_SOCKET;
|
| 374 |
} else if (SMTPUSERNAME[0] && esmtp && bufifind(line, "AUTH") && bufifind(line, "LOGIN")) {
|
| 375 |
buf_sets(line, "AUTH LOGIN\r\n");
|
| 376 |
sock_cat(s, line);
|
| 377 |
sock_getsmtp(s, line);
|
| 378 |
if (!bufleft(line, "334")) {
|
| 379 |
errlog(ERRORMSG, "SMTP AUTH fails: %b\n", line);
|
| 380 |
goto err;
|
| 381 |
}
|
| 382 |
buf_sets(line, SMTPUSERNAME);
|
| 383 |
encode(line, 0);
|
| 384 |
buf_appends(line, "\r\n");
|
| 385 |
sock_cat(s, line);
|
| 386 |
sock_getsmtp(s, line);
|
| 387 |
if (!bufleft(line, "334")) {
|
| 388 |
errlog(ERRORMSG, "SMTP username rejected: %b\n", line);
|
| 389 |
goto err;
|
| 390 |
}
|
| 391 |
buf_sets(line, SMTPPASSWORD);
|
| 392 |
encode(line, 0);
|
| 393 |
buf_appends(line, "\r\n");
|
| 394 |
sock_cat(s, line);
|
| 395 |
sock_getsmtp(s, line);
|
| 396 |
if (!bufleft(line, "235"))
|
| 397 |
errlog(ERRORMSG, "SMTP authentication failed: %b\n", line);
|
| 398 |
}
|
| 399 |
}
|
| 400 |
err:
|
| 401 |
buf_free(line);
|
| 402 |
}
|
| 403 |
#endif /* USE_SOCK */
|
| 404 |
return (s);
|
| 405 |
}
|
| 406 |
|
| 407 |
int smtp_close(SOCKET s)
|
| 408 |
{
|
| 409 |
BUFFER *line;
|
| 410 |
int ret = -1;
|
| 411 |
|
| 412 |
#ifdef USE_SOCK
|
| 413 |
line = buf_new();
|
| 414 |
buf_sets(line, "QUIT\r\n");
|
| 415 |
sock_cat(s, line);
|
| 416 |
if (sock_getsmtp(s, line) == 0 && line->data[0] == '2') {
|
| 417 |
errlog(DEBUGINFO, "Closing SMTP connection.\n");
|
| 418 |
ret = 0;
|
| 419 |
} else
|
| 420 |
errlog(WARNING, "SMTP quit failed: %b\n", line);
|
| 421 |
closesocket(s);
|
| 422 |
buf_free(line);
|
| 423 |
#endif /* USE_SOCK */
|
| 424 |
return (ret);
|
| 425 |
}
|
| 426 |
|
| 427 |
int smtp_send(SOCKET relay, BUFFER *head, BUFFER *message, char *from)
|
| 428 |
{
|
| 429 |
BUFFER *rcpt, *line, *field, *content;
|
| 430 |
int ret = -1;
|
| 431 |
|
| 432 |
#ifdef USE_SOCK
|
| 433 |
line = buf_new();
|
| 434 |
field = buf_new();
|
| 435 |
content = buf_new();
|
| 436 |
rcpt = buf_new();
|
| 437 |
|
| 438 |
while (buf_getheader(head, field, content) == 0)
|
| 439 |
if (bufieq(field, "to"))
|
| 440 |
#ifdef BROKEN_MTA
|
| 441 |
if (!bufifind(rcpt, content->data))
|
| 442 |
/* Do not add the same recipient twice.
|
| 443 |
Needed for brain-dead MTAs. */
|
| 444 |
#endif /* BROKEN_MTA */
|
| 445 |
rfc822_addr(content, rcpt);
|
| 446 |
buf_rewind(head);
|
| 447 |
|
| 448 |
while (buf_isheader(message) && buf_getheader(message, field, content) == 0) {
|
| 449 |
if (bufieq(field, "to") || bufieq(field, "cc") || bufieq(field, "bcc")) {
|
| 450 |
#ifdef BROKEN_MTA
|
| 451 |
if (!bufifind(rcpt, content->data))
|
| 452 |
/* Do not add the same recipient twice.
|
| 453 |
Needed for brain-dead MTAs. */
|
| 454 |
#endif /* BROKEN_MTA */
|
| 455 |
rfc822_addr(content, rcpt);
|
| 456 |
}
|
| 457 |
if (!bufieq(field, "bcc"))
|
| 458 |
buf_appendheader(head, field, content);
|
| 459 |
}
|
| 460 |
buf_nl(head);
|
| 461 |
|
| 462 |
buf_clear(content);
|
| 463 |
if (from) {
|
| 464 |
buf_sets(line, from);
|
| 465 |
rfc822_addr(line, content);
|
| 466 |
buf_chop(content);
|
| 467 |
}
|
| 468 |
if (bufieq(content, REMAILERADDR) || bufieq(content, ANONADDR))
|
| 469 |
buf_clear(content);
|
| 470 |
if (content->length == 0)
|
| 471 |
buf_sets(content, ENVFROM[0] ? ENVFROM : ANONADDR);
|
| 472 |
|
| 473 |
buf_setf(line, "MAIL FROM:<%b>\r\n", content);
|
| 474 |
sock_cat(relay, line);
|
| 475 |
sock_getsmtp(relay, line);
|
| 476 |
if (!line->data[0] == '2') {
|
| 477 |
errlog(ERRORMSG, "SMTP relay does not accept mail: %b\n", line);
|
| 478 |
goto end;
|
| 479 |
}
|
| 480 |
while (buf_getline(rcpt, content) == 0) {
|
| 481 |
buf_setf(line, "RCPT TO:<%b>\r\n", content);
|
| 482 |
sock_cat(relay, line);
|
| 483 |
sock_getsmtp(relay, line);
|
| 484 |
if (bufleft(line, "421")) {
|
| 485 |
errlog(ERRORMSG, "SMTP relay error: %b\n", line);
|
| 486 |
goto end;
|
| 487 |
}
|
| 488 |
if (bufleft(line, "530")) {
|
| 489 |
errlog(ERRORMSG, "SMTP authentication required: %b\n", line);
|
| 490 |
goto end;
|
| 491 |
}
|
| 492 |
}
|
| 493 |
|
| 494 |
buf_sets(line, "DATA\r\n");
|
| 495 |
sock_cat(relay, line);
|
| 496 |
sock_getsmtp(relay, line);
|
| 497 |
if (!bufleft(line, "354")) {
|
| 498 |
errlog(WARNING, "SMTP relay does not accept message: %b\n", line);
|
| 499 |
goto end;
|
| 500 |
}
|
| 501 |
while (buf_getline(head, line) >= 0) {
|
| 502 |
buf_appends(line, "\r\n");
|
| 503 |
if (bufleft(line, ".")) {
|
| 504 |
buf_setf(content, ".%b", line);
|
| 505 |
buf_move(line, content);
|
| 506 |
}
|
| 507 |
sock_cat(relay, line);
|
| 508 |
}
|
| 509 |
while (buf_getline(message, line) >= 0) {
|
| 510 |
buf_appends(line, "\r\n");
|
| 511 |
if (bufleft(line, ".")) {
|
| 512 |
buf_setf(content, ".%b", line);
|
| 513 |
buf_move(line, content);
|
| 514 |
}
|
| 515 |
sock_cat(relay, line);
|
| 516 |
}
|
| 517 |
buf_sets(line, ".\r\n");
|
| 518 |
sock_cat(relay, line);
|
| 519 |
sock_getsmtp(relay, line);
|
| 520 |
if (bufleft(line, "2"))
|
| 521 |
ret = 0;
|
| 522 |
else
|
| 523 |
errlog(WARNING, "SMTP relay will not send message: %b\n", line);
|
| 524 |
end:
|
| 525 |
buf_free(line);
|
| 526 |
buf_free(field);
|
| 527 |
buf_free(content);
|
| 528 |
buf_free(rcpt);
|
| 529 |
#endif /* USE_SOCK */
|
| 530 |
return (ret);
|
| 531 |
}
|
| 532 |
|
| 533 |
static SOCKET sendmail_state = INVALID_SOCKET;
|
| 534 |
|
| 535 |
void sendmail_begin(void)
|
| 536 |
{
|
| 537 |
/* begin mail sending session */
|
| 538 |
if (sendmail_state == INVALID_SOCKET)
|
| 539 |
sendmail_state = smtp_open();
|
| 540 |
}
|
| 541 |
void sendmail_end(void)
|
| 542 |
{
|
| 543 |
/* end mail sending session */
|
| 544 |
if (sendmail_state != INVALID_SOCKET) {
|
| 545 |
smtp_close(sendmail_state);
|
| 546 |
sendmail_state = INVALID_SOCKET;
|
| 547 |
}
|
| 548 |
}
|
| 549 |
|
| 550 |
int smtpsend(BUFFER *head, BUFFER *message, char *from)
|
| 551 |
{
|
| 552 |
SOCKET s;
|
| 553 |
int ret = -1;
|
| 554 |
|
| 555 |
if (sendmail_state != INVALID_SOCKET)
|
| 556 |
ret = smtp_send(sendmail_state, head, message, from);
|
| 557 |
else {
|
| 558 |
s = smtp_open();
|
| 559 |
if (s != INVALID_SOCKET) {
|
| 560 |
ret = smtp_send(s, head, message, from);
|
| 561 |
smtp_close(s);
|
| 562 |
}
|
| 563 |
}
|
| 564 |
return (ret);
|
| 565 |
}
|
| 566 |
|
| 567 |
/* retrieve mail with POP3 **********************************************/
|
| 568 |
#ifdef USE_SOCK
|
| 569 |
int pop3_close(SOCKET s);
|
| 570 |
|
| 571 |
#define POP3_ANY 0
|
| 572 |
#define POP3_APOP 1
|
| 573 |
#define POP3_PASS 2
|
| 574 |
|
| 575 |
SOCKET pop3_open(char *user, char *host, char *pass, int auth)
|
| 576 |
{
|
| 577 |
SOCKET server = INVALID_SOCKET;
|
| 578 |
BUFFER *line;
|
| 579 |
int authenticated = 0;
|
| 580 |
char md[33];
|
| 581 |
int c;
|
| 582 |
|
| 583 |
line = buf_new();
|
| 584 |
server = opensocket(host, 110);
|
| 585 |
if (server == INVALID_SOCKET)
|
| 586 |
errlog(NOTICE, "Can't connect to POP3 server %s.\n", host);
|
| 587 |
else {
|
| 588 |
sock_getline(server, line);
|
| 589 |
if (!bufleft(line, "+")) {
|
| 590 |
errlog(WARNING, "No POP3 service at %s.\n", host);
|
| 591 |
closesocket(server);
|
| 592 |
server = INVALID_SOCKET;
|
| 593 |
}
|
| 594 |
}
|
| 595 |
if (server != INVALID_SOCKET) {
|
| 596 |
errlog(DEBUGINFO, "Opening POP3 connection to %s.\n", host);
|
| 597 |
do
|
| 598 |
c = buf_getc(line);
|
| 599 |
while (c != '<' && c != -1);
|
| 600 |
while (c != '>' && c != -1) {
|
| 601 |
buf_appendc(line, c);
|
| 602 |
c = buf_getc(line);
|
| 603 |
}
|
| 604 |
if (c == '>' && (auth == POP3_ANY || auth == POP3_APOP)) {
|
| 605 |
buf_appendc(line, c);
|
| 606 |
buf_appends(line, pass);
|
| 607 |
digest_md5(line, line);
|
| 608 |
id_encode(line->data, md);
|
| 609 |
buf_setf(line, "APOP %s %s\r\n", user, md);
|
| 610 |
sock_cat(server, line);
|
| 611 |
sock_getline(server, line);
|
| 612 |
if (bufleft(line, "+"))
|
| 613 |
authenticated = 1;
|
| 614 |
else {
|
| 615 |
errlog(auth == POP3_APOP ? ERRORMSG : NOTICE,
|
| 616 |
"POP3 APOP auth at %s failed: %b\n", host, line);
|
| 617 |
buf_sets(line, "QUIT\r\n");
|
| 618 |
sock_cat(server, line);
|
| 619 |
closesocket(server);
|
| 620 |
server = pop3_open(user, host, pass, POP3_PASS);
|
| 621 |
goto end;
|
| 622 |
}
|
| 623 |
}
|
| 624 |
if (!authenticated) {
|
| 625 |
buf_setf(line, "USER %s\r\n", user);
|
| 626 |
sock_cat(server, line);
|
| 627 |
sock_getline(server, line);
|
| 628 |
if (!bufleft(line, "+"))
|
| 629 |
errlog(ERRORMSG, "POP3 USER command at %s failed: %b\n", host, line);
|
| 630 |
else {
|
| 631 |
buf_setf(line, "PASS %s\r\n", pass);
|
| 632 |
sock_cat(server, line);
|
| 633 |
sock_getline(server, line);
|
| 634 |
if (bufleft(line, "+"))
|
| 635 |
authenticated = 1;
|
| 636 |
else
|
| 637 |
errlog(ERRORMSG, "POP3 auth at %s failed: %b\n", host, line);
|
| 638 |
}
|
| 639 |
}
|
| 640 |
if (!authenticated) {
|
| 641 |
pop3_close(server);
|
| 642 |
closesocket(server);
|
| 643 |
server = INVALID_SOCKET;
|
| 644 |
}
|
| 645 |
}
|
| 646 |
end:
|
| 647 |
buf_free(line);
|
| 648 |
return (server);
|
| 649 |
}
|
| 650 |
|
| 651 |
int pop3_close(SOCKET s)
|
| 652 |
{
|
| 653 |
BUFFER *line;
|
| 654 |
int ret = -1;
|
| 655 |
|
| 656 |
line = buf_new();
|
| 657 |
buf_sets(line, "QUIT\r\n");
|
| 658 |
sock_cat(s, line);
|
| 659 |
sock_getline(s, line);
|
| 660 |
if (bufleft(line, "+")) {
|
| 661 |
ret = 0;
|
| 662 |
errlog(DEBUGINFO, "Closing POP3 connection.\n");
|
| 663 |
} else
|
| 664 |
errlog(ERRORMSG, "POP3 QUIT failed:\n", line->data);
|
| 665 |
buf_free(line);
|
| 666 |
return (ret);
|
| 667 |
}
|
| 668 |
|
| 669 |
int pop3_stat(SOCKET s)
|
| 670 |
{
|
| 671 |
BUFFER *line;
|
| 672 |
int val = -1;
|
| 673 |
|
| 674 |
line = buf_new();
|
| 675 |
buf_sets(line, "STAT\r\n");
|
| 676 |
sock_cat(s, line);
|
| 677 |
sock_getline(s, line);
|
| 678 |
if (bufleft(line, "+"))
|
| 679 |
sscanf(line->data, "+%*s %d", &val);
|
| 680 |
buf_free(line);
|
| 681 |
return (val);
|
| 682 |
}
|
| 683 |
|
| 684 |
int pop3_list(SOCKET s, int n)
|
| 685 |
{
|
| 686 |
BUFFER *line;
|
| 687 |
int val = -1;
|
| 688 |
|
| 689 |
line = buf_new();
|
| 690 |
buf_setf(line, "LIST %d\r\n", n);
|
| 691 |
sock_cat(s, line);
|
| 692 |
sock_getline(s, line);
|
| 693 |
if (bufleft(line, "+"))
|
| 694 |
sscanf(line->data, "+%*s %d", &val);
|
| 695 |
buf_free(line);
|
| 696 |
return (val);
|
| 697 |
}
|
| 698 |
|
| 699 |
int pop3_dele(SOCKET s, int n)
|
| 700 |
{
|
| 701 |
BUFFER *line;
|
| 702 |
int ret = 0;
|
| 703 |
|
| 704 |
line = buf_new();
|
| 705 |
buf_setf(line, "DELE %d\r\n", n);
|
| 706 |
sock_cat(s, line);
|
| 707 |
sock_getline(s, line);
|
| 708 |
if (!bufleft(line, "+"))
|
| 709 |
ret = -1;
|
| 710 |
buf_free(line);
|
| 711 |
return (ret);
|
| 712 |
}
|
| 713 |
|
| 714 |
int pop3_retr(SOCKET s, int n, BUFFER *msg)
|
| 715 |
{
|
| 716 |
BUFFER *line;
|
| 717 |
int ret = -1;
|
| 718 |
|
| 719 |
line = buf_new();
|
| 720 |
buf_clear(msg);
|
| 721 |
buf_setf(line, "RETR %d\r\n", n);
|
| 722 |
sock_cat(s, line);
|
| 723 |
sock_getline(s, line);
|
| 724 |
if (bufleft(line, "+")) {
|
| 725 |
for (;;) {
|
| 726 |
if (sock_getline(s, line) == -1)
|
| 727 |
break;
|
| 728 |
if (bufeq(line, ".")) {
|
| 729 |
ret = 0;
|
| 730 |
break;
|
| 731 |
} else if (bufleft(line, ".")) {
|
| 732 |
buf_append(msg, line->data + 1, line->length - 1);
|
| 733 |
} else
|
| 734 |
buf_cat(msg, line);
|
| 735 |
buf_nl(msg);
|
| 736 |
}
|
| 737 |
}
|
| 738 |
buf_free(line);
|
| 739 |
return (ret);
|
| 740 |
}
|
| 741 |
|
| 742 |
void pop3get(void)
|
| 743 |
{
|
| 744 |
FILE *f;
|
| 745 |
char cfg[LINELEN], user[LINELEN], host[LINELEN], pass[LINELEN], auth[5];
|
| 746 |
SOCKET server;
|
| 747 |
BUFFER *line, *msg;
|
| 748 |
int i = 0, num = 0;
|
| 749 |
|
| 750 |
line = buf_new();
|
| 751 |
msg = buf_new();
|
| 752 |
f = mix_openfile(POP3CONF, "r");
|
| 753 |
if (f != NULL)
|
| 754 |
while (fgets(cfg, sizeof(cfg), f) != NULL) {
|
| 755 |
if (cfg[0] == '#')
|
| 756 |
continue;
|
| 757 |
if (strchr(cfg, '@'))
|
| 758 |
strchr(cfg, '@')[0] = ' ';
|
| 759 |
if (sscanf(cfg, "%127s %127s %127s %4s", user, host, pass, auth) < 3)
|
| 760 |
continue;
|
| 761 |
i = POP3_ANY;
|
| 762 |
if (strileft(auth, "apop"))
|
| 763 |
i = POP3_APOP;
|
| 764 |
if (strileft(auth, "pass"))
|
| 765 |
i = POP3_PASS;
|
| 766 |
server = pop3_open(user, host, pass, i);
|
| 767 |
if (server != INVALID_SOCKET) {
|
| 768 |
num = pop3_stat(server);
|
| 769 |
if (num < 0)
|
| 770 |
errlog(WARNING, "POP3 protocol error at %s.\n", host);
|
| 771 |
else if (num == 0)
|
| 772 |
errlog(DEBUGINFO, "No mail at %s.\n", host);
|
| 773 |
else
|
| 774 |
for (i = 1; i <= num; i++) {
|
| 775 |
if (POP3SIZELIMIT > 0 &&
|
| 776 |
pop3_list(server, i) > POP3SIZELIMIT * 1024) {
|
| 777 |
errlog(WARNING, "Over size message on %s.", host);
|
| 778 |
if (POP3DEL == 1)
|
| 779 |
pop3_dele(server, i);
|
| 780 |
} else {
|
| 781 |
if (pop3_retr(server, i, msg) == 0 &&
|
| 782 |
pool_add(msg, "inf") == 0)
|
| 783 |
pop3_dele(server, i);
|
| 784 |
else {
|
| 785 |
errlog(WARNING, "POP3 error while getting mail from %s.",
|
| 786 |
host);
|
| 787 |
closesocket(server);
|
| 788 |
goto end;
|
| 789 |
}
|
| 790 |
}
|
| 791 |
}
|
| 792 |
pop3_close(server);
|
| 793 |
closesocket(server);
|
| 794 |
}
|
| 795 |
}
|
| 796 |
end:
|
| 797 |
if (f != NULL)
|
| 798 |
fclose(f);
|
| 799 |
buf_free(line);
|
| 800 |
buf_free(msg);
|
| 801 |
}
|
| 802 |
#endif /* USE_SOCK */
|
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