masqmail-0.2: f671821d8222 src/pop3

masqmail-0.2

view src/pop3_in.c @ 15:f671821d8222

code beautifying; 0 -> \0 if appropriate

author	meillo@marmaro.de
date	Thu, 06 Nov 2008 09:18:38 +0100
parents	26e34ae9a3e3
children	c93023f58cc7

line source

2 *

3 * This program is free software; you can redistribute it and/or modify

4 * it under the terms of the GNU General Public License as published by

5 * the Free Software Foundation; either version 2 of the License, or

6 * (at your option) any later version.

7 *

8 * This program is distributed in the hope that it will be useful,

9 * but WITHOUT ANY WARRANTY; without even the implied warranty of

10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

11 * GNU General Public License for more details.

12 *

13 * You should have received a copy of the GNU General Public License

14 * along with this program; if not, write to the Free Software

15 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

16 */

18 /* see RFC 1725 */

20 #include <sys/wait.h>

21 #include <sys/stat.h>

23 #include "masqmail.h"

24 #include "pop3_in.h"

25 #include "readsock.h"

27 #ifdef USE_LIB_CRYPTO

28 #include <openssl/md5.h>

29 #else

30 #include "md5/global.h"

31 #include "md5/md5.h"

32 #endif

34 #ifdef ENABLE_POP3

36 /* experimental feature */

37 #define DO_WRITE_UIDL_EARLY 1

39 static gchar*

40 MD5String(char *string)

41 {

42 MD5_CTX context;

43 unsigned char digest[16];

44 char str_digest[33];

45 int i;

47 #ifdef USE_LIB_CRYPTO

48 MD5(string, strlen(string), digest);

49 #else

50 MD5Init(&context);

51 MD5Update(&context, string, strlen(string));

52 MD5Final(digest, &context);

53 #endif

54 for (i = 0; i < 16; i++)

55 sprintf(str_digest + 2 * i, "%02x", digest[i]);

57 return g_strdup(str_digest);

58 }

60 static pop3_base*

61 create_pop3base(gint sock, guint flags)

62 {

63 gint dup_sock;

65 pop3_base *popb = (pop3_base *) g_malloc(sizeof(pop3_base));

66 if (popb) {

67 memset(popb, 0, sizeof(pop3_base));

69 popb->error = pop3_ok;

71 popb->buffer = (gchar *) g_malloc(POP3_BUF_LEN);

73 dup_sock = dup(sock);

74 popb->out = fdopen(sock, "w");

75 popb->in = fdopen(dup_sock, "r");

77 popb->flags = flags;

78 }

79 return popb;

80 }

82 static void

83 pop3_printf(FILE * out, gchar * fmt, ...)

84 {

85 va_list args;

86 va_start(args, fmt);

88 DEBUG(4) {

89 gchar buf[256];

90 va_list args_copy;

92 va_copy(args_copy, args);

93 vsnprintf(buf, 255, fmt, args_copy);

94 va_end(args_copy);

96 debugf(">>>%s", buf);

97 }

99 vfprintf(out, fmt, args);

100 fflush(out);

101

102 va_end(args);

103 }

104

105 static gboolean

106 find_uid(pop3_base * popb, gchar * str)

107 {

108 GList *node, *node_next;

109

110 for (node = popb->list_uid_old; node; node = node_next) {

111 gchar *uid = (gchar *) (node->data);

112 node_next = node->next;

113 if (strcmp(uid, str) == 0) {

114 #if 1

115 popb->list_uid_old = g_list_remove_link(popb->list_uid_old, node);

116 g_list_free_1(node);

117 g_free(uid);

118 #endif

119 return TRUE;

120 }

121 }

122 return FALSE;

123 }

124

125 static gboolean

126 write_uidl(pop3_base * popb, gchar * user)

127 {

128 gboolean ok = FALSE;

129 GList *node;

130 gchar *filename = g_strdup_printf("%s/popuidl/%s@%s", conf.spool_dir, user, popb->remote_host);

131 gchar *tmpname = g_strdup_printf("%s.tmp", filename);

132 FILE *fptr = fopen(tmpname, "wt");

133

134 if (fptr) {

135 foreach(popb->drop_list, node) {

136 msg_info *info = (msg_info *) (node->data);

137 if (info->is_fetched || info->is_in_uidl)

138 fprintf(fptr, "%s\n", info->uid);

139 }

140 fclose(fptr);

141 ok = (rename(tmpname, filename) != -1);

142 }

143

144 g_free(tmpname);

145 g_free(filename);

146 return ok;

147 }

148

149 static gboolean

150 read_uidl_fname(pop3_base * popb, gchar * filename)

151 {

152 gboolean ok = FALSE;

153 FILE *fptr = fopen(filename, "rt");

154 gchar buf[256];

155

156 if (fptr) {

157 popb->list_uid_old = NULL;

158 while (fgets(buf, 255, fptr)) {

159 if (buf[strlen(buf) - 1] == '\n') {

160 g_strchomp(buf);

161 popb->list_uid_old = g_list_append(popb->list_uid_old, g_strdup(buf));

162 } else {

163 logwrite(LOG_ALERT, "broken uid: %s\n", buf);

164 break;

165 }

166 }

167 fclose(fptr);

168 ok = TRUE;

169 } else

170 logwrite(LOG_ALERT, "opening of %s failed: %s", filename, strerror(errno));

171 return ok;

172 }

173

174 static gboolean

175 read_uidl(pop3_base * popb, gchar * user)

176 {

177 gboolean ok = FALSE;

178 struct stat statbuf;

179 gchar *filename = g_strdup_printf("%s/popuidl/%s@%s", conf.spool_dir, user, popb->remote_host);

180

181 if (stat(filename, &statbuf) == 0) {

182 ok = read_uidl_fname(popb, filename);

183 if (ok) {

184 GList *drop_node;

185 foreach(popb->drop_list, drop_node) {

186 msg_info *info = (msg_info *) (drop_node->data);

187 if (find_uid(popb, info->uid)) {

188 DEBUG(5) debugf("msg with uid '%s' already known\n", info->uid);

189 info->is_in_uidl = TRUE;

190 popb->uidl_known_cnt++;

191 } else

192 DEBUG(5) debugf("msg with uid '%s' not known\n", info->uid);

193 }

194 }

195 } else {

196 logwrite(LOG_DEBUG, "no uidl file '%s' found\n", filename);

197 ok = TRUE;

198 }

199

200 g_free(filename);

201 return ok; /* return code is irrelevant, do not check... */

202 }

203

204 static gboolean

205 read_response(pop3_base * popb, int timeout)

206 {

207 gint len;

208

209 len = read_sockline(popb->in, popb->buffer, POP3_BUF_LEN, timeout, READSOCKL_CHUG);

210

211 if (len == -3) {

212 popb->error = pop3_timeout;

213 return FALSE;

214 } else if (len == -2) {

215 popb->error = pop3_syntax;

216 return FALSE;

217 } else if (len == -1) {

218 popb->error = pop3_eof;

219 return FALSE;

220 }

221

222 return TRUE;

223 }

224

225 static gboolean

226 check_response(pop3_base * popb)

227 {

228 char c = popb->buffer[0];

229

230 if (c == '+') {

231 popb->error = pop3_ok;

232 return TRUE;

233 } else if (c == '-')

234 popb->error = pop3_fail;

235 else

236 popb->error = pop3_syntax;

237 return FALSE;

238 }

239

240 static gboolean

241 strtoi(gchar * p, gchar ** pend, gint * val)

242 {

243 gchar buf[12];

244 gint i = 0;

245

246 while (*p && isspace(*p))

247 p++;

248 if (*p) {

249 while ((i < 11) && isdigit(*p))

250 buf[i++] = *(p++);

251 buf[i] = 0;

252 *val = atoi(buf);

253 *pend = p;

254 return TRUE;

255 }

256 return FALSE;

257 }

258

259 static gboolean

260 check_response_int_int(pop3_base * popb, gint * arg0, gint * arg1)

261 {

262 if (check_response(popb)) {

263 gchar *p = &(popb->buffer[3]);

264 gchar *pe;

265

266 if (strtoi(p, &pe, arg0)) {

267 DEBUG(5) debugf("arg0 = %d\n", *arg0);

268 p = pe;

269 if (strtoi(p, &pe, arg1))

270 DEBUG(5) debugf("arg1 = %d\n", *arg1);

271 return TRUE;

272 }

273 popb->error = pop3_syntax;

274 }

275 return FALSE;

276 }

277

278 static gboolean

279 get_drop_listing(pop3_base * popb)

280 {

281 gchar buf[64];

282

283 DEBUG(5) debugf("get_drop_listing() entered\n");

284

285 while (1) {

286 gint len = read_sockline(popb->in, buf, 64, POP3_CMD_TIMEOUT, READSOCKL_CHUG);

287 if (len > 0) {

288 if (buf[0] == '.')

289 return TRUE;

290 else {

291 gint number, msg_size;

292 gchar *p = buf, *pe;

293 if (strtoi(p, &pe, &number)) {

294 p = pe;

295 if (strtoi(p, &pe, &msg_size)) {

296 msg_info *info = g_malloc(sizeof(msg_info));

297 info->number = number;

298 info->size = msg_size;

299

300 DEBUG(5) debugf ("get_drop_listing(), number = %d, msg_size = %d\n", number, msg_size);

301

302 info->uid = NULL;

303 info->is_fetched = FALSE;

304 info->is_in_uidl = FALSE;

305 popb->drop_list = g_list_append(popb->drop_list, info);

306 } else {

307 popb->error = pop3_syntax;

308 break;

309 }

310 } else {

311 popb->error = pop3_syntax;

312 break;

313 }

314 }

315 } else {

316 popb->error = (len == -1) ? pop3_eof : pop3_timeout;

317 return FALSE;

318 }

319 }

320 return FALSE;

321 }

322

323 static gboolean

324 get_uid_listing(pop3_base * popb)

325 {

326 gchar buf[64];

327

328 while (1) {

329 gint len = read_sockline(popb->in, buf, 64, POP3_CMD_TIMEOUT, READSOCKL_CHUG);

330 if (len > 0) {

331 if (buf[0] == '.')

332 return TRUE;

333 else {

334 gint number;

335 gchar *p = buf, *pe;

336 if (strtoi(p, &pe, &number)) {

337 msg_info *info = NULL;

338 GList *drop_node;

339

340 p = pe;

341 while (*p && isspace(*p))

342 p++;

343

344 foreach(popb->drop_list, drop_node) {

345 msg_info *curr_info = (msg_info *) (drop_node->data);

346 if (curr_info->number == number) {

347 info = curr_info;

348 break;

349 }

350 }

351 if (info) {

352 info->uid = g_strdup(p);

353 g_strchomp(info->uid);

354 }

355

356 } else {

357 popb->error = pop3_syntax;

358 break;

359 }

360 }

361 }

362 }

363 return FALSE;

364 }

365

366 static gboolean

367 check_init_response(pop3_base * popb)

368 {

369 if (check_response(popb)) {

370 gchar buf[256];

371 gchar *p = popb->buffer;

372 gint i = 0;

373 if (*p) {

374 while (*p && (*p != '<'))

375 p++;

376 while (*p && (*p != '>') && (i < 254))

377 buf[i++] = *(p++);

378 buf[i++] = '>';

379 buf[i] = '\0';

380

381 popb->timestamp = g_strdup(buf);

382

383 return TRUE;

384 }

385 }

386 return FALSE;

387 }

388

389 void

390 pop3_in_close(pop3_base * popb)

391 {

392 GList *node;

393

394 fclose(popb->in);

395 fclose(popb->out);

396

397 close(popb->sock);

398

399 foreach(popb->list_uid_old, node) {

400 gchar *uid = (gchar *) (node->data);

401 g_free(uid);

402 }

403 g_list_free(popb->list_uid_old);

404

405 foreach(popb->drop_list, node) {

406 msg_info *info = (msg_info *) (node->data);

407 if (info->uid)

408 g_free(info->uid);

409 g_free(info);

410 }

411 g_list_free(popb->drop_list);

412

413 if (popb->buffer)

414 g_free(popb->buffer);

415 if (popb->timestamp)

416 g_free(popb->timestamp);

417 }

418

419 pop3_base*

420 pop3_in_open(gchar * host, gint port, GList * resolve_list, guint flags)

421 {

422 pop3_base *popb;

423 gint sock;

424 mxip_addr *addr;

425

426 DEBUG(5) debugf("pop3_in_open entered, host = %s\n", host);

427

428 if ((addr = connect_resolvelist(&sock, host, port, resolve_list))) {

429 /* create structure to hold status data: */

430 popb = create_pop3base(sock, flags);

431 popb->remote_host = addr->name;

432

433 DEBUG(5) {

434 struct sockaddr_in name;

435 int len;

436 getsockname(sock, (struct sockaddr *) (&name), &len);

437 debugf("socket: name.sin_addr = %s\n", inet_ntoa(name.sin_addr));

438 }

439 return popb;

440 }

441 return NULL;

442 }

443

444 pop3_base*

445 pop3_in_open_child(gchar * cmd, guint flags)

446 {

447 pop3_base *popb;

448 gint sock;

449

450 DEBUG(5) debugf("pop3_in_open_child entered, cmd = %s\n", cmd);

451 sock = child(cmd);

452 if (sock > 0) {

453 popb = create_pop3base(sock, flags);

454 popb->remote_host = NULL;

455 return popb;

456 }

457 logwrite(LOG_ALERT, "child failed (sock = %d): %s\n", sock, strerror(errno));

458

459 return NULL;

460 }

461

462 gboolean

463 pop3_in_init(pop3_base * popb)

464 {

465 gboolean ok;

466

467 if ((ok = read_response(popb, POP3_INITIAL_TIMEOUT))) {

468 ok = check_init_response(popb);

469 }

470 if (!ok)

471 /* pop3_in_log_failure(popb, NULL); */

472 logwrite(LOG_ALERT, "pop3 failed\n");

473 return ok;

474 }

475

476 gboolean

477 pop3_in_login(pop3_base * popb, gchar * user, gchar * pass)

478 {

479 if (popb->flags & POP3_FLAG_APOP) {

480

481 gchar *string = g_strdup_printf("%s%s", popb->timestamp, pass);

482 gchar *digest = MD5String(string);

483 pop3_printf(popb->out, "APOP %s %s\r\n", user, digest);

484 g_free(string);

485 g_free(digest);

486 if (read_response(popb, POP3_CMD_TIMEOUT)) {

487 if (check_response(popb))

488 return TRUE;

489 else

490 popb->error = pop3_login_failure;

491 }

492

493 } else {

494

495 pop3_printf(popb->out, "USER %s\r\n", user);

496 if (read_response(popb, POP3_CMD_TIMEOUT)) {

497 if (check_response(popb)) {

498 pop3_printf(popb->out, "PASS %s\r\n", pass);

499 if (read_response(popb, POP3_CMD_TIMEOUT)) {

500 if (check_response(popb))

501 return TRUE;

502 else

503 popb->error = pop3_login_failure;

504 }

505 } else {

506 popb->error = pop3_login_failure;

507 }

508 }

509 }

510 return FALSE;

511 }

512

513 gboolean

514 pop3_in_stat(pop3_base * popb)

515 {

516 pop3_printf(popb->out, "STAT\r\n");

517 if (read_response(popb, POP3_CMD_TIMEOUT)) {

518 gint msg_cnt, mbox_size;

519 if (check_response_int_int(popb, &msg_cnt, &mbox_size)) {

520 popb->msg_cnt = msg_cnt;

521 popb->mbox_size = mbox_size;

522

523 return TRUE;

524 }

525 }

526 return FALSE;

527 }

528

529 gboolean

530 pop3_in_list(pop3_base * popb)

531 {

532 pop3_printf(popb->out, "LIST\r\n");

533 if (read_response(popb, POP3_CMD_TIMEOUT)) {

534 if (get_drop_listing(popb)) {

535 return TRUE;

536 }

537 }

538 return FALSE;

539 }

540

541 gboolean

542 pop3_in_dele(pop3_base * popb, gint number)

543 {

544 pop3_printf(popb->out, "DELE %d\r\n", number);

545 if (read_response(popb, POP3_CMD_TIMEOUT)) {

546 return TRUE;

547 }

548 return FALSE;

549 }

550

551 message*

552 pop3_in_retr(pop3_base * popb, gint number, address * rcpt)

553 {

554 accept_error err;

555

556 pop3_printf(popb->out, "RETR %d\r\n", number);

557 if (read_response(popb, POP3_CMD_TIMEOUT)) {

558 message *msg = create_message();

559 msg->received_host = popb->remote_host;

560 msg->received_prot = (popb->flags & POP3_FLAG_APOP) ? PROT_APOP : PROT_POP3;

561 msg->transfer_id = (popb->next_id)++;

562 msg->rcpt_list = g_list_append(NULL, copy_address(rcpt));

563

564 if ((err = accept_message(popb->in, msg, ACC_MAIL_FROM_HEAD

565 | (conf.do_save_envelope_to ? ACC_SAVE_ENVELOPE_TO : 0)))

566 == AERR_OK)

567 return msg;

568

569 destroy_message(msg);

570 }

571 return NULL;

572 }

573

574 gboolean

575 pop3_in_uidl(pop3_base * popb)

576 {

577 pop3_printf(popb->out, "UIDL\r\n");

578 if (read_response(popb, POP3_CMD_TIMEOUT)) {

579 if (get_uid_listing(popb)) {

580 return TRUE;

581 }

582 }

583 return FALSE;

584 }

585

586 gboolean

587 pop3_in_quit(pop3_base * popb)

588 {

589 pop3_printf(popb->out, "QUIT\r\n");

590 DEBUG(4) debugf("QUIT\n");

591 signal(SIGALRM, SIG_DFL);

592 return TRUE;

593 }

594

595 /* Send a DELE command for each message in (the old) uid listing.

596 This is to prevent mail from to be kept on server, if a previous

597 transaction was interupted. */

598 gboolean

599 pop3_in_uidl_dele(pop3_base * popb)

600 {

601 GList *drop_node;

602

603 foreach(popb->drop_list, drop_node) {

604 msg_info *info = (msg_info *) (drop_node->data);

605 /* if(find_uid(popb, info->uid)){ */

606 if (info->is_in_uidl) {

607 if (!pop3_in_dele(popb, info->number))

608 return FALSE;

609 /* TODO: it probably makes sense to also delete this uid from the listing */

610 }

611 }

612 return TRUE;

613 }

614

615 gboolean

616 pop3_get(pop3_base * popb, gchar * user, gchar * pass, address * rcpt, address * return_path,

617 gint max_count, gint max_size, gboolean max_size_delete)

618 {

619 gboolean ok = FALSE;

620 gint num_children = 0;

621

622 DEBUG(5) debugf("rcpt = %s@%s\n", rcpt->local_part, rcpt->domain);

623

624 signal(SIGCHLD, SIG_DFL);

625

626 if (pop3_in_init(popb)) {

627 if (pop3_in_login(popb, user, pass)) {

628 if (pop3_in_stat(popb)) {

629 if (popb->msg_cnt > 0) {

630

631 logwrite(LOG_NOTICE | LOG_VERBOSE, "%d message(s) for user %s at %s\n",

632 popb->msg_cnt, user, popb->remote_host);

633

634 if (pop3_in_list(popb)) {

635 gboolean do_get = !(popb->flags & POP3_FLAG_UIDL);

636 if (!do_get)

637 do_get = pop3_in_uidl(popb);

638 if (do_get) {

639 gint count = 0;

640 GList *drop_node;

641

642 if (popb->flags & POP3_FLAG_UIDL) {

643 read_uidl(popb, user);

644 logwrite(LOG_VERBOSE | LOG_NOTICE, "%d message(s) already in uidl.\n", popb->uidl_known_cnt);

645 }

646 if ((popb->flags & POP3_FLAG_UIDL) && (popb->flags & POP3_FLAG_UIDL_DELE))

647 pop3_in_uidl_dele(popb);

648

649 foreach(popb->drop_list, drop_node) {

650

651 msg_info *info = (msg_info *) (drop_node->data);

652 gboolean do_get_this = !(popb->flags & POP3_FLAG_UIDL);

653 /* if(!do_get_this) do_get_this = !find_uid(popb, info->uid); */

654 if (!do_get_this)

655 do_get_this = !(info->is_in_uidl);

656 if (do_get_this) {

657

658 if ((info->size < max_size) || (max_size == 0)) {

659 message *msg;

660

661 logwrite(LOG_VERBOSE | LOG_NOTICE, "receiving message %d\n", info->number);

662 msg = pop3_in_retr(popb, info->number, rcpt);

663

664 if (msg) {

665 if (return_path)

666 msg->return_path = copy_address(return_path);

667 if (spool_write(msg, TRUE)) {

668 pid_t pid;

669 logwrite(LOG_NOTICE, "%s <= %s host=%s with %s\n", msg->uid,

670 addr_string(msg->return_path), popb->remote_host,

671 (popb->flags & POP3_FLAG_APOP) ? prot_names [PROT_APOP] : prot_names [PROT_POP3]);

672 info->is_fetched = TRUE;

673 count++;

674 #if DO_WRITE_UIDL_EARLY

675 if (popb->flags & POP3_FLAG_UIDL)

676 write_uidl(popb, user);

677 #endif

678 if (!conf.do_queue) {

679

680 /* wait for child processes. If there are too many, we wait blocking, before we fork another one */

681 while (num_children > 0) {

682 int status, options = WNOHANG;

683 pid_t pid;

684

685 if (num_children >= POP3_MAX_CHILDREN) {

686 logwrite(LOG_NOTICE, "too many children - waiting\n");

687 options = 0;

688 }

689 if ((pid = waitpid(0, &status, options)) > 0) {

690 num_children--;

691 if (WEXITSTATUS(status) != EXIT_SUCCESS)

692 logwrite(LOG_WARNING, "delivery process with pid %d returned %d\n", pid, WEXITSTATUS (status));

693 if (WIFSIGNALED(status))

694 logwrite(LOG_WARNING, "delivery process with pid %d got signal: %d\n", pid, WTERMSIG (status));

695 } else if (pid < 0) {

696 logwrite(LOG_WARNING, "wait got error: %s\n", strerror(errno));

697 }

698 }

699

700 if ((pid = fork()) == 0) {

701 deliver(msg);

702 _exit(EXIT_SUCCESS);

703 } else if (pid < 0) {

704 logwrite(LOG_ALERT | LOG_VERBOSE, "could not fork for delivery, id = %s: %s\n", msg->uid, strerror(errno));

705 } else

706 num_children++;

707 } else {

708 DEBUG(1) debugf("queuing forced by configuration or option.\n");

709 }

710 if (popb->flags & POP3_FLAG_DELETE)

711 pop3_in_dele(popb, info->number);

712

713 destroy_message(msg);

714 } /* if(spool_write(msg, TRUE)) */

715 } else {

716 logwrite(LOG_ALERT, "retrieving of message %d failed: %d\n", info->number, popb->error);

717 }

718 } /* if((info->size > max_size) ... */

719 else {

720 logwrite(LOG_NOTICE | LOG_VERBOSE, "size of message #%d (%d) > max_size (%d)\n", info->number, info->size, max_size);

721 if (max_size_delete)

722 if (popb->flags & POP3_FLAG_DELETE)

723 pop3_in_dele(popb, info->number);

724 }

725 } /* if(do_get_this) ... */

726 else {

727 if (popb->flags & POP3_FLAG_UIDL) {

728 info->is_fetched = TRUE; /* obsolete? */

729 logwrite(LOG_VERBOSE, "message %d already known\n", info->number);

730 DEBUG(1) debugf("message %d (uid = %s) not fetched\n", info->number, info->uid);

731 #if 0

732 #if DO_WRITE_UIDL_EARLY

733 write_uidl(popb, user); /* obsolete? */

734 #endif

735 #endif

736 }

737 }

738 if ((max_count != 0) && (count >= max_count))

739 break;

740 } /* foreach() */

741 #if DO_WRITE_UIDL_EARLY

742 #else

743 if (popb->flags & POP3_FLAG_UIDL)

744 write_uidl(popb, user);

745 #endif

746 } /* if(pop3_in_uidl(popb) ... */

747 } /* if(pop3_in_list(popb)) */

748 } /* if(popb->msg_cnt > 0) */

749 else {

750 logwrite(LOG_NOTICE | LOG_VERBOSE, "no messages for user %s at %s\n", user, popb->remote_host);

751 }

752 ok = TRUE;

753 }

754 pop3_in_quit(popb);

755 } else {

756 logwrite(LOG_ALERT | LOG_VERBOSE, "pop3 login failed for user %s, host = %s\n", user, popb->remote_host);

757 }

758 }

759 if (!ok) {

760 logwrite(LOG_ALERT | LOG_VERBOSE, "pop3 failed, error = %d\n", popb->error);

761 }

762

763 while (num_children > 0) {

764 int status;

765 pid_t pid;

766 if ((pid = wait(&status)) > 0) {

767 num_children--;

768 if (WEXITSTATUS(status) != EXIT_SUCCESS)

769 logwrite(LOG_WARNING, "delivery process with pid %d returned %d\n", pid, WEXITSTATUS(status));

770 if (WIFSIGNALED(status))

771 logwrite(LOG_WARNING, "delivery process with pid %d got signal: %d\n", pid, WTERMSIG(status));

772 } else {

773 logwrite(LOG_WARNING, "wait got error: %s\n", strerror(errno));

774 }

775 }

776

777 return ok;

778 }

779

780 /* function just to log into a pop server,

781 for pop_before_smtp (or is it smtp_after_pop?)

782 */

783

784 gboolean

785 pop3_login(gchar * host, gint port, GList * resolve_list, gchar * user, gchar * pass, guint flags)

786 {

787 gboolean ok = FALSE;

788 pop3_base *popb;

789

790 signal(SIGCHLD, SIG_IGN);

791

792 if ((popb = pop3_in_open(host, port, resolve_list, flags))) {

793 if (pop3_in_init(popb)) {

794 if (pop3_in_login(popb, user, pass))

795 ok = TRUE;

796 else

797 logwrite(LOG_ALERT | LOG_VERBOSE, "pop3 login failed for user %s, host = %s\n", user, host);

798 }

799 pop3_in_close(popb);

800 }

801 return ok;

802 }

803

804 #endif