vcs.maemo.org Git - monky/blob - src/mail.c

   1 /* -*- mode: c; c-basic-offset: 4; tab-width: 4; indent-tabs-mode: t -*-
   2  * vim: ts=4 sw=4 noet ai cindent syntax=c
   3  *
   4  * Conky, a system monitor, based on torsmo
   5  *
   6  * Any original torsmo code is licensed under the BSD license
   7  *
   8  * All code written since the fork of torsmo is licensed under the GPL
   9  *
  10  * Please see COPYING for details
  11  *
  12  * Copyright (c) 2004, Hannu Saransaari and Lauri Hakkarainen
  13  * Copyright (c) 2005-2009 Brenden Matthews, Philip Kovacs, et. al.
  14  *      (see AUTHORS)
  15  * All rights reserved.
  16  *
  17  * This program is free software: you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation, either version 3 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  * You should have received a copy of the GNU General Public License
  27  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  28  *
  29  */
  30
  31 #include "config.h"
  32 #include "conky.h"
  33 #include "common.h"
  34 #include "logging.h"
  35 #include "mail.h"
  36 #include "text_object.h"
  37
  38 #include <errno.h>
  39 #include <stdio.h>
  40 #include <string.h>
  41 #include <unistd.h>
  42 #include <limits.h>
  43 #include <netinet/in.h>
  44 #include <netdb.h>
  45 #include <sys/socket.h>
  46 #include <sys/stat.h>
  47 #include <sys/time.h>
  48 #include <sys/param.h>
  49
  50 #include <dirent.h>
  51 #include <errno.h>
  52 #include <termios.h>
  53
  54 /* MAX() is defined by a header included from conky.h
  55  * maybe once this is not true anymore, so have an alternative
  56  * waiting to drop in.
  57  *
  58  * #define MAX(a, b)  ((a > b) ? a : b)
  59  */
  60
  61 char *current_mail_spool;
  62
  63 void update_mail_count(struct local_mail_s *mail)
  64 {
  65         struct stat st;
  66
  67         if (mail == NULL) {
  68                 return;
  69         }
  70
  71         /* TODO: use that fine file modification notify on Linux 2.4 */
  72
  73         /* don't check mail so often (9.5s is minimum interval) */
  74         if (current_update_time - mail->last_update < 9.5) {
  75                 return;
  76         } else {
  77                 mail->last_update = current_update_time;
  78         }
  79
  80         if (stat(mail->mbox, &st)) {
  81                 static int rep = 0;
  82
  83                 if (!rep) {
  84                         NORM_ERR("can't stat %s: %s", mail->mbox, strerror(errno));
  85                         rep = 1;
  86                 }
  87                 return;
  88         }
  89 #if HAVE_DIRENT_H
  90         /* maildir format */
  91         if (S_ISDIR(st.st_mode)) {
  92                 DIR *dir;
  93                 char *dirname;
  94                 struct dirent *dirent;
  95                 char *mailflags;
  96
  97                 mail->mail_count = mail->new_mail_count = 0;
  98                 mail->seen_mail_count = mail->unseen_mail_count = 0;
  99                 mail->flagged_mail_count = mail->unflagged_mail_count = 0;
 100                 mail->forwarded_mail_count = mail->unforwarded_mail_count = 0;
 101                 mail->replied_mail_count = mail->unreplied_mail_count = 0;
 102                 mail->draft_mail_count = mail->trashed_mail_count = 0;
 103                 dirname = (char *) malloc(sizeof(char) * (strlen(mail->mbox) + 5));
 104                 if (!dirname) {
 105                         NORM_ERR("malloc");
 106                         return;
 107                 }
 108                 strcpy(dirname, mail->mbox);
 109                 strcat(dirname, "/");
 110                 /* checking the cur subdirectory */
 111                 strcat(dirname, "cur");
 112
 113                 dir = opendir(dirname);
 114                 if (!dir) {
 115                         NORM_ERR("cannot open directory");
 116                         free(dirname);
 117                         return;
 118                 }
 119                 dirent = readdir(dir);
 120                 while (dirent) {
 121                         /* . and .. are skipped */
 122                         if (dirent->d_name[0] != '.') {
 123                                 mail->mail_count++;
 124                                 mailflags = (char *) malloc(sizeof(char) * strlen(strrchr(dirent->d_name, ',')));
 125                                 if (!mailflags) {
 126                                         NORM_ERR("malloc");
 127                                         free(dirname);
 128                                         return;
 129                                 }
 130                                 strcpy(mailflags, strrchr(dirent->d_name, ','));
 131                                 if (!strchr(mailflags, 'T')) { /* The message is not in the trash */
 132                                         if (strchr(mailflags, 'S')) { /*The message has been seen */
 133                                                 mail->seen_mail_count++;
 134                                         } else {
 135                                                 mail->unseen_mail_count++;
 136                                         }
 137                                         if (strchr(mailflags, 'F')) { /*The message was flagged */
 138                                                 mail->flagged_mail_count++;
 139                                         } else {
 140                                                 mail->unflagged_mail_count++;
 141                                         }
 142                                         if (strchr(mailflags, 'P')) { /*The message was forwarded */
 143                                                 mail->forwarded_mail_count++;
 144                                         } else {
 145                                                 mail->unforwarded_mail_count++;
 146                                         }
 147                                         if (strchr(mailflags, 'R')) { /*The message was replied */
 148                                                 mail->replied_mail_count++;
 149                                         } else {
 150                                                 mail->unreplied_mail_count++;
 151                                         }
 152                                         if (strchr(mailflags, 'D')) { /*The message is a draft */
 153                                                 mail->draft_mail_count++;
 154                                         }
 155                                 } else {
 156                                         mail->trashed_mail_count++;
 157                                 }
 158                                 free(mailflags);
 159                         }
 160                         dirent = readdir(dir);
 161                 }
 162                 closedir(dir);
 163
 164                 dirname[strlen(dirname) - 3] = '\0';
 165                 strcat(dirname, "new");
 166
 167                 dir = opendir(dirname);
 168                 if (!dir) {
 169                         NORM_ERR("cannot open directory");
 170                         free(dirname);
 171                         return;
 172                 }
 173                 dirent = readdir(dir);
 174                 while (dirent) {
 175                         /* . and .. are skipped */
 176                         if (dirent->d_name[0] != '.') {
 177                                 mail->new_mail_count++;
 178                                 mail->mail_count++;
 179                                 mail->unseen_mail_count++;  /* new messages cannot have been seen */
 180                         }
 181                         dirent = readdir(dir);
 182                 }
 183                 closedir(dir);
 184
 185                 free(dirname);
 186                 return;
 187         }
 188 #endif
 189         /* mbox format */
 190         if (st.st_mtime != mail->last_mtime) {
 191                 /* yippee, modification time has changed, let's read mail count! */
 192                 static int rep;
 193                 FILE *fp;
 194                 int reading_status = 0;
 195
 196                 /* could lock here but I don't think it's really worth it because
 197                  * this isn't going to write mail spool */
 198
 199                 mail->new_mail_count = mail->mail_count = 0;
 200
 201                 /* these flags are not supported for mbox */
 202                 mail->seen_mail_count = mail->unseen_mail_count = -1;
 203                 mail->flagged_mail_count = mail->unflagged_mail_count = -1;
 204                 mail->forwarded_mail_count = mail->unforwarded_mail_count = -1;
 205                 mail->replied_mail_count = mail->unreplied_mail_count = -1;
 206                 mail->draft_mail_count = mail->trashed_mail_count = -1;
 207
 208                 fp = open_file(mail->mbox, &rep);
 209                 if (!fp) {
 210                         return;
 211                 }
 212
 213                 /* NOTE: adds mail as new if there isn't Status-field at all */
 214
 215                 while (!feof(fp)) {
 216                         char buf[128];
 217                         int was_new = 0;
 218
 219                         if (fgets(buf, 128, fp) == NULL) {
 220                                 break;
 221                         }
 222
 223                         if (strncmp(buf, "From ", 5) == 0) {
 224                                 /* ignore MAILER-DAEMON */
 225                                 if (strncmp(buf + 5, "MAILER-DAEMON ", 14) != 0) {
 226                                         mail->mail_count++;
 227                                         was_new = 0;
 228
 229                                         if (reading_status == 1) {
 230                                                 mail->new_mail_count++;
 231                                         } else {
 232                                                 reading_status = 1;
 233                                         }
 234                                 }
 235                         } else {
 236                                 if (reading_status == 1
 237                                                 && strncmp(buf, "X-Mozilla-Status:", 17) == 0) {
 238                                         int xms = strtol(buf + 17, NULL, 16);
 239                                         /* check that mail isn't marked for deletion */
 240                                         if (xms & 0x0008) {
 241                                                 mail->trashed_mail_count++;
 242                                                 reading_status = 0;
 243                                                 /* Don't check whether the trashed email is unread */
 244                                                 continue;
 245                                         }
 246                                         /* check that mail isn't already read */
 247                                         if (!(xms & 0x0001)) {
 248                                                 mail->new_mail_count++;
 249                                                 was_new = 1;
 250                                         }
 251
 252                                         /* check for an additional X-Status header */
 253                                         reading_status = 2;
 254                                         continue;
 255                                 }
 256                                 if (reading_status == 1 && strncmp(buf, "Status:", 7) == 0) {
 257                                         /* check that mail isn't already read */
 258                                         if (strchr(buf + 7, 'R') == NULL) {
 259                                                 mail->new_mail_count++;
 260                                                 was_new = 1;
 261                                         }
 262
 263                                         reading_status = 2;
 264                                         continue;
 265                                 }
 266                                 if (reading_status >= 1 && strncmp(buf, "X-Status:", 9) == 0) {
 267                                         /* check that mail isn't marked for deletion */
 268                                         if (strchr(buf + 9, 'D') != NULL) {
 269                                                 mail->trashed_mail_count++;
 270                                                 /* If the mail was previously detected as new,
 271                                                    subtract it from the new mail count */
 272                                                 if (was_new)
 273                                                         mail->new_mail_count--;
 274                                         }
 275
 276                                         reading_status = 0;
 277                                         continue;
 278                                 }
 279                         }
 280
 281                         /* skip until \n */
 282                         while (strchr(buf, '\n') == NULL && !feof(fp)) {
 283                                 fgets(buf, 128, fp);
 284                         }
 285                 }
 286
 287                 fclose(fp);
 288
 289                 if (reading_status) {
 290                         mail->new_mail_count++;
 291                 }
 292
 293                 mail->last_mtime = st.st_mtime;
 294         }
 295 }
 296
 297 #define MAXDATASIZE 1000
 298
 299 struct mail_s *parse_mail_args(char type, const char *arg)
 300 {
 301         struct mail_s *mail;
 302         char *tmp;
 303
 304         mail = malloc(sizeof(struct mail_s));
 305         memset(mail, 0, sizeof(struct mail_s));
 306
 307         if (sscanf(arg, "%128s %128s %128s", mail->host, mail->user, mail->pass)
 308                         != 3) {
 309                 if (type == POP3_TYPE) {
 310                         NORM_ERR("Scanning POP3 args failed");
 311                 } else if (type == IMAP_TYPE) {
 312                         NORM_ERR("Scanning IMAP args failed");
 313                 }
 314                 return 0;
 315         }
 316         // see if password needs prompting
 317         if (mail->pass[0] == '*' && mail->pass[1] == '\0') {
 318                 int fp = fileno(stdin);
 319                 struct termios term;
 320
 321                 tcgetattr(fp, &term);
 322                 term.c_lflag &= ~ECHO;
 323                 tcsetattr(fp, TCSANOW, &term);
 324                 printf("Enter mailbox password (%s@%s): ", mail->user, mail->host);
 325                 scanf("%128s", mail->pass);
 326                 printf("\n");
 327                 term.c_lflag |= ECHO;
 328                 tcsetattr(fp, TCSANOW, &term);
 329         }
 330         // now we check for optional args
 331         tmp = strstr(arg, "-r ");
 332         if (tmp) {
 333                 tmp += 3;
 334                 sscanf(tmp, "%u", &mail->retries);
 335         } else {
 336                 mail->retries = 5;      // 5 retries after failure
 337         }
 338         tmp = strstr(arg, "-i ");
 339         if (tmp) {
 340                 tmp += 3;
 341                 sscanf(tmp, "%f", &mail->interval);
 342         } else {
 343                 mail->interval = 300;   // 5 minutes
 344         }
 345         tmp = strstr(arg, "-p ");
 346         if (tmp) {
 347                 tmp += 3;
 348                 sscanf(tmp, "%lu", &mail->port);
 349         } else {
 350                 if (type == POP3_TYPE) {
 351                         mail->port = 110;       // default pop3 port
 352                 } else if (type == IMAP_TYPE) {
 353                         mail->port = 143;       // default imap port
 354                 }
 355         }
 356         if (type == IMAP_TYPE) {
 357                 tmp = strstr(arg, "-f ");
 358                 if (tmp) {
 359                         int len = 1024;
 360                         tmp += 3;
 361                         if (tmp[0] == '\'') {
 362                                 len = strstr(tmp + 1, "'") - tmp - 1;
 363                                 if (len > 1024) {
 364                                         len = 1024;
 365                                 }
 366                         }
 367                         strncpy(mail->folder, tmp + 1, len);
 368                 } else {
 369                         strncpy(mail->folder, "INBOX", 128);    // default imap inbox
 370                 }
 371         }
 372         tmp = strstr(arg, "-e ");
 373         if (tmp) {
 374                 int len = 1024;
 375                 tmp += 3;
 376
 377                 if (tmp[0] == '\'') {
 378                         len = strstr(tmp + 1, "'") - tmp - 1;
 379                         if (len > 1024) {
 380                                 len = 1024;
 381                         }
 382                 }
 383                 strncpy(mail->command, tmp + 1, len);
 384         } else {
 385                 mail->command[0] = '\0';
 386         }
 387         mail->p_timed_thread = NULL;
 388         return mail;
 389 }
 390
 391 void parse_imap_mail_args(struct text_object *obj, const char *arg)
 392 {
 393         if (!arg) {
 394                 obj->char_b = 1;
 395                 return;
 396         }
 397         // proccss
 398         obj->data.mail = parse_mail_args(IMAP_TYPE, arg);
 399         obj->char_b = 0;
 400 }
 401
 402 void parse_pop3_mail_args(struct text_object *obj, const char *arg)
 403 {
 404         if (!arg) {
 405                 obj->char_b = 1;
 406                 return;
 407         }
 408         // proccss
 409         obj->data.mail = parse_mail_args(POP3_TYPE, arg);
 410         obj->char_b = 0;
 411 }
 412
 413 void free_mail_obj(struct text_object *obj)
 414 {
 415         if (!obj->char_b) {
 416                 free(obj->data.mail);
 417         }
 418 }
 419
 420 int imap_command(int sockfd, const char *command, char *response, const char *verify)
 421 {
 422         struct timeval fetchtimeout;
 423         fd_set fdset;
 424         int res, numbytes = 0;
 425         if (send(sockfd, command, strlen(command), 0) == -1) {
 426                 perror("send");
 427                 return -1;
 428         }
 429         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 430         fetchtimeout.tv_usec = 0;
 431         FD_ZERO(&fdset);
 432         FD_SET(sockfd, &fdset);
 433         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 434         if (res > 0) {
 435                 if ((numbytes = recv(sockfd, response, MAXDATASIZE - 1, 0)) == -1) {
 436                         perror("recv");
 437                         return -1;
 438                 }
 439         }
 440         DBGP2("imap_command()  command: %s", command);
 441         DBGP2("imap_command() received: %s", response);
 442         response[numbytes] = '\0';
 443         if (strstr(response, verify) == NULL) {
 444                 return -1;
 445         }
 446         return 0;
 447 }
 448
 449 int imap_check_status(char *recvbuf, struct mail_s *mail)
 450 {
 451         char *reply;
 452         reply = strstr(recvbuf, " (MESSAGES ");
 453         if (!reply || strlen(reply) < 2) {
 454                 return -1;
 455         }
 456         reply += 2;
 457         *strchr(reply, ')') = '\0';
 458         if (reply == NULL) {
 459                 NORM_ERR("Error parsing IMAP response: %s", recvbuf);
 460                 return -1;
 461         } else {
 462                 timed_thread_lock(mail->p_timed_thread);
 463                 sscanf(reply, "MESSAGES %lu UNSEEN %lu", &mail->messages,
 464                                 &mail->unseen);
 465                 timed_thread_unlock(mail->p_timed_thread);
 466         }
 467         return 0;
 468 }
 469
 470 void imap_unseen_command(struct mail_s *mail, unsigned long old_unseen, unsigned long old_messages)
 471 {
 472         if (strlen(mail->command) > 1 && (mail->unseen > old_unseen
 473                                 || (mail->messages > old_messages && mail->unseen > 0))) {
 474                 // new mail goodie
 475                 if (system(mail->command) == -1) {
 476                         perror("system()");
 477                 }
 478         }
 479 }
 480
 481 static inline struct mail_s *ensure_mail_thread(struct text_object *obj,
 482                 void *thread(void *), const char *text)
 483 {
 484         if (obj->char_b && info.mail) {
 485                 // this means we use info
 486                 if (!info.mail->p_timed_thread) {
 487                         info.mail->p_timed_thread =
 488                                 timed_thread_create(thread,
 489                                                 (void *) info.mail, info.mail->interval * 1000000);
 490                         if (!info.mail->p_timed_thread) {
 491                                 NORM_ERR("Error creating %s timed thread", text);
 492                         }
 493                         timed_thread_register(info.mail->p_timed_thread,
 494                                         &info.mail->p_timed_thread);
 495                         if (timed_thread_run(info.mail->p_timed_thread)) {
 496                                 NORM_ERR("Error running %s timed thread", text);
 497                         }
 498                 }
 499                 return info.mail;
 500         } else if (obj->data.mail) {
 501                 // this means we use obj
 502                 if (!obj->data.mail->p_timed_thread) {
 503                         obj->data.mail->p_timed_thread =
 504                                 timed_thread_create(thread,
 505                                                 (void *) obj->data.mail,
 506                                                 obj->data.mail->interval * 1000000);
 507                         if (!obj->data.mail->p_timed_thread) {
 508                                 NORM_ERR("Error creating %s timed thread", text);
 509                         }
 510                         timed_thread_register(obj->data.mail->p_timed_thread,
 511                                         &obj->data.mail->p_timed_thread);
 512                         if (timed_thread_run(obj->data.mail->p_timed_thread)) {
 513                                 NORM_ERR("Error running %s timed thread", text);
 514                         }
 515                 }
 516                 return obj->data.mail;
 517         } else if (!obj->a) {
 518                 // something is wrong, warn once then stop
 519                 NORM_ERR("There's a problem with your mail settings.  "
 520                                 "Check that the global mail settings are properly defined"
 521                                 " (line %li).", obj->line);
 522                 obj->a++;
 523         }
 524         return NULL;
 525 }
 526
 527 static void *imap_thread(void *arg)
 528 {
 529         int sockfd, numbytes;
 530         char recvbuf[MAXDATASIZE];
 531         char sendbuf[MAXDATASIZE];
 532         unsigned int fail = 0;
 533         unsigned long old_unseen = ULONG_MAX;
 534         unsigned long old_messages = ULONG_MAX;
 535         struct stat stat_buf;
 536         struct hostent he, *he_res = 0;
 537         int he_errno;
 538         char hostbuff[2048];
 539         struct sockaddr_in their_addr;  // connector's address information
 540         struct mail_s *mail = (struct mail_s *)arg;
 541         int has_idle = 0;
 542         int threadfd = timed_thread_readfd(mail->p_timed_thread);
 543         char resolved_host = 0;
 544
 545         while (fail < mail->retries) {
 546                 struct timeval fetchtimeout;
 547                 int res;
 548                 fd_set fdset;
 549
 550                 if (!resolved_host) {
 551 #ifdef HAVE_GETHOSTBYNAME_R
 552                         if (gethostbyname_r(mail->host, &he, hostbuff, sizeof(hostbuff), &he_res, &he_errno)) { // get the host info
 553                                 NORM_ERR("IMAP gethostbyname_r: %s", hstrerror(h_errno));
 554                                 fail++;
 555                                 break;
 556                         }
 557 #else /* HAVE_GETHOSTBYNAME_R */
 558                         if ((he_res = gethostbyname(mail->host)) == NULL) {     // get the host info
 559                                 herror("gethostbyname");
 560                                 fail++;
 561                                 break;
 562                         }
 563 #endif /* HAVE_GETHOSTBYNAME_R */
 564                         resolved_host = 1;
 565                 }
 566                 if (fail > 0) {
 567                         NORM_ERR("Trying IMAP connection again for %s@%s (try %u/%u)",
 568                                         mail->user, mail->host, fail + 1, mail->retries);
 569                 }
 570                 do {
 571                         if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
 572                                 perror("socket");
 573                                 fail++;
 574                                 break;
 575                         }
 576
 577                         // host byte order
 578                         their_addr.sin_family = AF_INET;
 579                         // short, network byte order
 580                         their_addr.sin_port = htons(mail->port);
 581                         their_addr.sin_addr = *((struct in_addr *) he_res->h_addr);
 582                         // zero the rest of the struct
 583                         memset(&(their_addr.sin_zero), '\0', 8);
 584
 585                         if (connect(sockfd, (struct sockaddr *) &their_addr,
 586                                                 sizeof(struct sockaddr)) == -1) {
 587                                 perror("connect");
 588                                 fail++;
 589                                 break;
 590                         }
 591
 592                         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 593                         fetchtimeout.tv_usec = 0;
 594                         FD_ZERO(&fdset);
 595                         FD_SET(sockfd, &fdset);
 596                         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 597                         if (res > 0) {
 598                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 599                                         perror("recv");
 600                                         fail++;
 601                                         break;
 602                                 }
 603                         } else {
 604                                 NORM_ERR("IMAP connection failed: timeout");
 605                                 fail++;
 606                                 break;
 607                         }
 608                         recvbuf[numbytes] = '\0';
 609                         DBGP2("imap_thread() received: %s", recvbuf);
 610                         if (strstr(recvbuf, "* OK") != recvbuf) {
 611                                 NORM_ERR("IMAP connection failed, probably not an IMAP server");
 612                                 fail++;
 613                                 break;
 614                         }
 615                         strncpy(sendbuf, "abc CAPABILITY\r\n", MAXDATASIZE);
 616                         if (imap_command(sockfd, sendbuf, recvbuf, "abc OK")) {
 617                                 fail++;
 618                                 break;
 619                         }
 620                         if (strstr(recvbuf, " IDLE ") != NULL) {
 621                                 has_idle = 1;
 622                         }
 623
 624                         strncpy(sendbuf, "a1 login ", MAXDATASIZE);
 625                         strncat(sendbuf, mail->user, MAXDATASIZE - strlen(sendbuf) - 1);
 626                         strncat(sendbuf, " ", MAXDATASIZE - strlen(sendbuf) - 1);
 627                         strncat(sendbuf, mail->pass, MAXDATASIZE - strlen(sendbuf) - 1);
 628                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 629                         if (imap_command(sockfd, sendbuf, recvbuf, "a1 OK")) {
 630                                 fail++;
 631                                 break;
 632                         }
 633
 634                         strncpy(sendbuf, "a2 STATUS \"", MAXDATASIZE);
 635                         strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 636                         strncat(sendbuf, "\" (MESSAGES UNSEEN)\r\n",
 637                                         MAXDATASIZE - strlen(sendbuf) - 1);
 638                         if (imap_command(sockfd, sendbuf, recvbuf, "a2 OK")) {
 639                                 fail++;
 640                                 break;
 641                         }
 642
 643                         if (imap_check_status(recvbuf, mail)) {
 644                                 fail++;
 645                                 break;
 646                         }
 647                         imap_unseen_command(mail, old_unseen, old_messages);
 648                         fail = 0;
 649                         old_unseen = mail->unseen;
 650                         old_messages = mail->messages;
 651
 652                         if (has_idle) {
 653                                 strncpy(sendbuf, "a4 SELECT \"", MAXDATASIZE);
 654                                 strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 655                                 strncat(sendbuf, "\"\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 656                                 if (imap_command(sockfd, sendbuf, recvbuf, "a4 OK")) {
 657                                         fail++;
 658                                         break;
 659                                 }
 660
 661                                 strncpy(sendbuf, "a5 IDLE\r\n", MAXDATASIZE);
 662                                 if (imap_command(sockfd, sendbuf, recvbuf, "+ idling")) {
 663                                         fail++;
 664                                         break;
 665                                 }
 666                                 recvbuf[0] = '\0';
 667
 668                                 while (1) {
 669                                         /*
 670                                          * RFC 2177 says we have to re-idle every 29 minutes.
 671                                          * We'll do it every 20 minutes to be safe.
 672                                          */
 673                                         fetchtimeout.tv_sec = 1200;
 674                                         fetchtimeout.tv_usec = 0;
 675                                         DBGP2("idling...");
 676                                         FD_ZERO(&fdset);
 677                                         FD_SET(sockfd, &fdset);
 678                                         FD_SET(threadfd, &fdset);
 679                                         res = select(MAX(sockfd + 1, threadfd + 1), &fdset, NULL, NULL, &fetchtimeout);
 680                                         if (timed_thread_test(mail->p_timed_thread, 1) || (res == -1 && errno == EINTR) || FD_ISSET(threadfd, &fdset)) {
 681                                                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
 682                                                         /* if a valid socket, close it */
 683                                                         close(sockfd);
 684                                                 }
 685                                                 timed_thread_exit(mail->p_timed_thread);
 686                                         } else if (res > 0) {
 687                                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 688                                                         perror("recv idling");
 689                                                         fail++;
 690                                                         break;
 691                                                 }
 692                                         } else {
 693                                                 fail++;
 694                                                 break;
 695                                         }
 696                                         recvbuf[numbytes] = '\0';
 697                                         DBGP2("imap_thread() received: %s", recvbuf);
 698                                         if (strlen(recvbuf) > 2) {
 699                                                 unsigned long messages, recent;
 700                                                 char *buf = recvbuf;
 701                                                 char force_check = 0;
 702                                                 buf = strstr(buf, "EXISTS");
 703                                                 while (buf && strlen(buf) > 1 && strstr(buf + 1, "EXISTS")) {
 704                                                         buf = strstr(buf + 1, "EXISTS");
 705                                                 }
 706                                                 if (buf) {
 707                                                         // back up until we reach '*'
 708                                                         while (buf >= recvbuf && buf[0] != '*') {
 709                                                                 buf--;
 710                                                         }
 711                                                         if (sscanf(buf, "* %lu EXISTS\r\n", &messages) == 1) {
 712                                                                 timed_thread_lock(mail->p_timed_thread);
 713                                                                 if (mail->messages != messages) {
 714                                                                         force_check = 1;
 715                                                                         mail->messages = messages;
 716                                                                 }
 717                                                                 timed_thread_unlock(mail->p_timed_thread);
 718                                                         }
 719                                                 }
 720                                                 buf = recvbuf;
 721                                                 buf = strstr(buf, "RECENT");
 722                                                 while (buf && strlen(buf) > 1 && strstr(buf + 1, "RECENT")) {
 723                                                         buf = strstr(buf + 1, "RECENT");
 724                                                 }
 725                                                 if (buf) {
 726                                                         // back up until we reach '*'
 727                                                         while (buf >= recvbuf && buf[0] != '*') {
 728                                                                 buf--;
 729                                                         }
 730                                                         if (sscanf(buf, "* %lu RECENT\r\n", &recent) != 1) {
 731                                                                 recent = 0;
 732                                                         }
 733                                                 }
 734                                                 /*
 735                                                  * check if we got a FETCH from server, recent was
 736                                                  * something other than 0, or we had a timeout
 737                                                  */
 738                                                 buf = recvbuf;
 739                                                 if (recent > 0 || (buf && strstr(buf, " FETCH ")) || fetchtimeout.tv_sec == 0 || force_check) {
 740                                                         // re-check messages and unseen
 741                                                         if (imap_command(sockfd, "DONE\r\n", recvbuf, "a5 OK")) {
 742                                                                 fail++;
 743                                                                 break;
 744                                                         }
 745                                                         strncpy(sendbuf, "a2 STATUS \"", MAXDATASIZE);
 746                                                         strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 747                                                         strncat(sendbuf, "\" (MESSAGES UNSEEN)\r\n",
 748                                                                         MAXDATASIZE - strlen(sendbuf) - 1);
 749                                                         if (imap_command(sockfd, sendbuf, recvbuf, "a2 OK")) {
 750                                                                 fail++;
 751                                                                 break;
 752                                                         }
 753                                                         if (imap_check_status(recvbuf, mail)) {
 754                                                                 fail++;
 755                                                                 break;
 756                                                         }
 757                                                         strncpy(sendbuf, "a5 IDLE\r\n", MAXDATASIZE);
 758                                                         if (imap_command(sockfd, sendbuf, recvbuf, "+ idling")) {
 759                                                                 fail++;
 760                                                                 break;
 761                                                         }
 762                                                 }
 763                                                 /*
 764                                                  * check if we got a BYE from server
 765                                                  */
 766                                                 buf = recvbuf;
 767                                                 if (buf && strstr(buf, "* BYE")) {
 768                                                         // need to re-connect
 769                                                         break;
 770                                                 }
 771                                         } else {
 772                                                 fail++;
 773                                                 break;
 774                                         }
 775                                         imap_unseen_command(mail, old_unseen, old_messages);
 776                                         fail = 0;
 777                                         old_unseen = mail->unseen;
 778                                         old_messages = mail->messages;
 779                                 }
 780                                 if (fail) break;
 781                         } else {
 782                                 strncpy(sendbuf, "a3 logout\r\n", MAXDATASIZE);
 783                                 if (send(sockfd, sendbuf, strlen(sendbuf), 0) == -1) {
 784                                         perror("send a3");
 785                                         fail++;
 786                                         break;
 787                                 }
 788                                 fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 789                                 fetchtimeout.tv_usec = 0;
 790                                 FD_ZERO(&fdset);
 791                                 FD_SET(sockfd, &fdset);
 792                                 res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 793                                 if (res > 0) {
 794                                         if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 795                                                 perror("recv a3");
 796                                                 fail++;
 797                                                 break;
 798                                         }
 799                                 }
 800                                 recvbuf[numbytes] = '\0';
 801                                 DBGP2("imap_thread() received: %s", recvbuf);
 802                                 if (strstr(recvbuf, "a3 OK") == NULL) {
 803                                         NORM_ERR("IMAP logout failed: %s", recvbuf);
 804                                         fail++;
 805                                         break;
 806                                 }
 807                         }
 808                 } while (0);
 809                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
 810                         /* if a valid socket, close it */
 811                         close(sockfd);
 812                 }
 813                 if (timed_thread_test(mail->p_timed_thread, 0)) {
 814                         timed_thread_exit(mail->p_timed_thread);
 815                 }
 816         }
 817         mail->unseen = 0;
 818         mail->messages = 0;
 819         return 0;
 820 }
 821
 822 void print_imap_unseen(struct text_object *obj, char *p, int p_max_size)
 823 {
 824         struct mail_s *mail = ensure_mail_thread(obj, imap_thread, "imap");
 825
 826         if (mail && mail->p_timed_thread) {
 827                 timed_thread_lock(mail->p_timed_thread);
 828                 snprintf(p, p_max_size, "%lu", mail->unseen);
 829                 timed_thread_unlock(mail->p_timed_thread);
 830         }
 831 }
 832
 833 void print_imap_messages(struct text_object *obj, char *p, int p_max_size)
 834 {
 835         struct mail_s *mail = ensure_mail_thread(obj, imap_thread, "imap");
 836
 837         if (mail && mail->p_timed_thread) {
 838                 timed_thread_lock(mail->p_timed_thread);
 839                 snprintf(p, p_max_size, "%lu", mail->messages);
 840                 timed_thread_unlock(mail->p_timed_thread);
 841         }
 842 }
 843
 844 int pop3_command(int sockfd, const char *command, char *response, const char *verify)
 845 {
 846         struct timeval fetchtimeout;
 847         fd_set fdset;
 848         int res, numbytes = 0;
 849         if (send(sockfd, command, strlen(command), 0) == -1) {
 850                 perror("send");
 851                 return -1;
 852         }
 853         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 854         fetchtimeout.tv_usec = 0;
 855         FD_ZERO(&fdset);
 856         FD_SET(sockfd, &fdset);
 857         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 858         if (res > 0) {
 859                 if ((numbytes = recv(sockfd, response, MAXDATASIZE - 1, 0)) == -1) {
 860                         perror("recv");
 861                         return -1;
 862                 }
 863         }
 864         DBGP2("pop3_command() received: %s", response);
 865         response[numbytes] = '\0';
 866         if (strstr(response, verify) == NULL) {
 867                 return -1;
 868         }
 869         return 0;
 870 }
 871
 872 static void *pop3_thread(void *arg)
 873 {
 874         int sockfd, numbytes;
 875         char recvbuf[MAXDATASIZE];
 876         char sendbuf[MAXDATASIZE];
 877         char *reply;
 878         unsigned int fail = 0;
 879         unsigned long old_unseen = ULONG_MAX;
 880         struct stat stat_buf;
 881         struct hostent he, *he_res = 0;
 882         int he_errno;
 883         char hostbuff[2048];
 884         struct sockaddr_in their_addr;  // connector's address information
 885         struct mail_s *mail = (struct mail_s *)arg;
 886         char resolved_host = 0;
 887
 888         while (fail < mail->retries) {
 889                 struct timeval fetchtimeout;
 890                 int res;
 891                 fd_set fdset;
 892                 if (!resolved_host) {
 893 #ifdef HAVE_GETHOSTBYNAME_R
 894                         if (gethostbyname_r(mail->host, &he, hostbuff, sizeof(hostbuff), &he_res, &he_errno)) { // get the host info
 895                                 NORM_ERR("POP3 gethostbyname_r: %s", hstrerror(h_errno));
 896                                 fail++;
 897                                 break;
 898                         }
 899 #else /* HAVE_GETHOSTBYNAME_R */
 900                         if ((he_res = gethostbyname(mail->host)) == NULL) {     // get the host info
 901                                 herror("gethostbyname");
 902                 fail++;
 903                 break;
 904         }
 905 #endif /* HAVE_GETHOSTBYNAME_R */
 906         resolved_host = 1;
 907 }
 908                 if (fail > 0) {
 909                         NORM_ERR("Trying POP3 connection again for %s@%s (try %u/%u)",
 910                                         mail->user, mail->host, fail + 1, mail->retries);
 911                 }
 912                 do {
 913                         if ((sockfd = socket(PF_INET, SOCK_STREAM, 0)) == -1) {
 914                                 perror("socket");
 915                                 fail++;
 916                                 break;
 917                         }
 918
 919                         // host byte order
 920                         their_addr.sin_family = AF_INET;
 921                         // short, network byte order
 922                         their_addr.sin_port = htons(mail->port);
 923                         their_addr.sin_addr = *((struct in_addr *) he_res->h_addr);
 924                         // zero the rest of the struct
 925                         memset(&(their_addr.sin_zero), '\0', 8);
 926
 927                         if (connect(sockfd, (struct sockaddr *) &their_addr,
 928                                                 sizeof(struct sockaddr)) == -1) {
 929                                 perror("connect");
 930                                 fail++;
 931                                 break;
 932                         }
 933
 934                         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 935                         fetchtimeout.tv_usec = 0;
 936                         FD_ZERO(&fdset);
 937                         FD_SET(sockfd, &fdset);
 938                         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 939                         if (res > 0) {
 940                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 941                                         perror("recv");
 942                                         fail++;
 943                                         break;
 944                                 }
 945                         } else {
 946                                 NORM_ERR("POP3 connection failed: timeout\n");
 947                                 fail++;
 948                                 break;
 949                         }
 950                         DBGP2("pop3_thread received: %s", recvbuf);
 951                         recvbuf[numbytes] = '\0';
 952                         if (strstr(recvbuf, "+OK ") != recvbuf) {
 953                                 NORM_ERR("POP3 connection failed, probably not a POP3 server");
 954                                 fail++;
 955                                 break;
 956                         }
 957                         strncpy(sendbuf, "USER ", MAXDATASIZE);
 958                         strncat(sendbuf, mail->user, MAXDATASIZE - strlen(sendbuf) - 1);
 959                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 960                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
 961                                 fail++;
 962                                 break;
 963                         }
 964
 965                         strncpy(sendbuf, "PASS ", MAXDATASIZE);
 966                         strncat(sendbuf, mail->pass, MAXDATASIZE - strlen(sendbuf) - 1);
 967                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 968                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
 969                                 NORM_ERR("POP3 server login failed: %s", recvbuf);
 970                                 fail++;
 971                                 break;
 972                         }
 973
 974                         strncpy(sendbuf, "STAT\r\n", MAXDATASIZE);
 975                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
 976                                 perror("send STAT");
 977                                 fail++;
 978                                 break;
 979                         }
 980
 981                         // now we get the data
 982                         reply = recvbuf + 4;
 983                         if (reply == NULL) {
 984                                 NORM_ERR("Error parsing POP3 response: %s", recvbuf);
 985                                 fail++;
 986                                 break;
 987                         } else {
 988                                 timed_thread_lock(mail->p_timed_thread);
 989                                 sscanf(reply, "%lu %lu", &mail->unseen, &mail->used);
 990                                 timed_thread_unlock(mail->p_timed_thread);
 991                         }
 992
 993                         strncpy(sendbuf, "QUIT\r\n", MAXDATASIZE);
 994                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK")) {
 995                                 NORM_ERR("POP3 logout failed: %s", recvbuf);
 996                                 fail++;
 997                                 break;
 998                         }
 999
1000                         if (strlen(mail->command) > 1 && mail->unseen > old_unseen) {
1001                                 // new mail goodie
1002                                 if (system(mail->command) == -1) {
1003                                         perror("system()");
1004                                 }
1005                         }
1006                         fail = 0;
1007                         old_unseen = mail->unseen;
1008                 } while (0);
1009                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
1010                         /* if a valid socket, close it */
1011                         close(sockfd);
1012                 }
1013                 if (timed_thread_test(mail->p_timed_thread, 0)) {
1014                         timed_thread_exit(mail->p_timed_thread);
1015                 }
1016         }
1017         mail->unseen = 0;
1018         mail->used = 0;
1019         return 0;
1020 }
1021
1022 void print_pop3_unseen(struct text_object *obj, char *p, int p_max_size)
1023 {
1024         struct mail_s *mail = ensure_mail_thread(obj, pop3_thread, "pop3");
1025
1026         if (mail && mail->p_timed_thread) {
1027                 timed_thread_lock(mail->p_timed_thread);
1028                 snprintf(p, p_max_size, "%lu", mail->unseen);
1029                 timed_thread_unlock(mail->p_timed_thread);
1030         }
1031 }
1032
1033 void print_pop3_used(struct text_object *obj, char *p, int p_max_size)
1034 {
1035         struct mail_s *mail = ensure_mail_thread(obj, pop3_thread, "pop3");
1036
1037         if (mail && mail->p_timed_thread) {
1038                 timed_thread_lock(mail->p_timed_thread);
1039                 snprintf(p, p_max_size, "%.1f",
1040                                 mail->used / 1024.0 / 1024.0);
1041                 timed_thread_unlock(mail->p_timed_thread);
1042         }
1043 }