git.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) 2005-2010 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 "text_object.h"
  36 #include "timed_thread.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 #define POP3_TYPE 1
  62 #define IMAP_TYPE 2
  63
  64 #define MAXSIZE 1024
  65
  66 struct mail_s {                 // for imap and pop3
  67         unsigned long unseen;
  68         unsigned long messages;
  69         unsigned long used;
  70         unsigned long quota;
  71         unsigned long port;
  72         unsigned int retries;
  73         float interval;
  74         double last_update;
  75         char host[MAXSIZE];
  76         char user[MAXSIZE];
  77         char pass[MAXSIZE];
  78         char command[MAXSIZE];
  79         char folder[MAXSIZE];
  80         timed_thread *p_timed_thread;
  81         char secure;
  82 };
  83
  84 struct local_mail_s {
  85         char *mbox;
  86         int mail_count;
  87         int new_mail_count;
  88         int seen_mail_count;
  89         int unseen_mail_count;
  90         int flagged_mail_count;
  91         int unflagged_mail_count;
  92         int forwarded_mail_count;
  93         int unforwarded_mail_count;
  94         int replied_mail_count;
  95         int unreplied_mail_count;
  96         int draft_mail_count;
  97         int trashed_mail_count;
  98         float interval;
  99         time_t last_mtime;
 100         double last_update;
 101 };
 102
 103 char *current_mail_spool;
 104
 105 static struct mail_s *global_mail;
 106 static int global_mail_use = 0;
 107
 108 static void update_mail_count(struct local_mail_s *mail)
 109 {
 110         struct stat st;
 111
 112         if (mail == NULL) {
 113                 return;
 114         }
 115
 116         /* TODO: use that fine file modification notify on Linux 2.4 */
 117
 118         /* don't check mail so often (9.5s is minimum interval) */
 119         if (current_update_time - mail->last_update < 9.5) {
 120                 return;
 121         } else {
 122                 mail->last_update = current_update_time;
 123         }
 124
 125         if (stat(mail->mbox, &st)) {
 126                 static int rep = 0;
 127
 128                 if (!rep) {
 129                         NORM_ERR("can't stat %s: %s", mail->mbox, strerror(errno));
 130                         rep = 1;
 131                 }
 132                 return;
 133         }
 134 #if HAVE_DIRENT_H
 135         /* maildir format */
 136         if (S_ISDIR(st.st_mode)) {
 137                 DIR *dir;
 138                 char *dirname;
 139                 struct dirent *dirent;
 140                 char *mailflags;
 141
 142                 mail->mail_count = mail->new_mail_count = 0;
 143                 mail->seen_mail_count = mail->unseen_mail_count = 0;
 144                 mail->flagged_mail_count = mail->unflagged_mail_count = 0;
 145                 mail->forwarded_mail_count = mail->unforwarded_mail_count = 0;
 146                 mail->replied_mail_count = mail->unreplied_mail_count = 0;
 147                 mail->draft_mail_count = mail->trashed_mail_count = 0;
 148                 dirname = (char *) malloc(sizeof(char) * (strlen(mail->mbox) + 5));
 149                 if (!dirname) {
 150                         NORM_ERR("malloc");
 151                         return;
 152                 }
 153                 strcpy(dirname, mail->mbox);
 154                 strcat(dirname, "/");
 155                 /* checking the cur subdirectory */
 156                 strcat(dirname, "cur");
 157
 158                 dir = opendir(dirname);
 159                 if (!dir) {
 160                         NORM_ERR("cannot open directory");
 161                         free(dirname);
 162                         return;
 163                 }
 164                 dirent = readdir(dir);
 165                 while (dirent) {
 166                         /* . and .. are skipped */
 167                         if (dirent->d_name[0] != '.') {
 168                                 mail->mail_count++;
 169                                 mailflags = (char *) malloc(sizeof(char) * strlen(strrchr(dirent->d_name, ',')));
 170                                 if (!mailflags) {
 171                                         NORM_ERR("malloc");
 172                                         free(dirname);
 173                                         return;
 174                                 }
 175                                 strcpy(mailflags, strrchr(dirent->d_name, ','));
 176                                 if (!strchr(mailflags, 'T')) { /* The message is not in the trash */
 177                                         if (strchr(mailflags, 'S')) { /*The message has been seen */
 178                                                 mail->seen_mail_count++;
 179                                         } else {
 180                                                 mail->unseen_mail_count++;
 181                                         }
 182                                         if (strchr(mailflags, 'F')) { /*The message was flagged */
 183                                                 mail->flagged_mail_count++;
 184                                         } else {
 185                                                 mail->unflagged_mail_count++;
 186                                         }
 187                                         if (strchr(mailflags, 'P')) { /*The message was forwarded */
 188                                                 mail->forwarded_mail_count++;
 189                                         } else {
 190                                                 mail->unforwarded_mail_count++;
 191                                         }
 192                                         if (strchr(mailflags, 'R')) { /*The message was replied */
 193                                                 mail->replied_mail_count++;
 194                                         } else {
 195                                                 mail->unreplied_mail_count++;
 196                                         }
 197                                         if (strchr(mailflags, 'D')) { /*The message is a draft */
 198                                                 mail->draft_mail_count++;
 199                                         }
 200                                 } else {
 201                                         mail->trashed_mail_count++;
 202                                 }
 203                                 free(mailflags);
 204                         }
 205                         dirent = readdir(dir);
 206                 }
 207                 closedir(dir);
 208
 209                 dirname[strlen(dirname) - 3] = '\0';
 210                 strcat(dirname, "new");
 211
 212                 dir = opendir(dirname);
 213                 if (!dir) {
 214                         NORM_ERR("cannot open directory");
 215                         free(dirname);
 216                         return;
 217                 }
 218                 dirent = readdir(dir);
 219                 while (dirent) {
 220                         /* . and .. are skipped */
 221                         if (dirent->d_name[0] != '.') {
 222                                 mail->new_mail_count++;
 223                                 mail->mail_count++;
 224                                 mail->unseen_mail_count++;  /* new messages cannot have been seen */
 225                         }
 226                         dirent = readdir(dir);
 227                 }
 228                 closedir(dir);
 229
 230                 free(dirname);
 231                 return;
 232         }
 233 #endif
 234         /* mbox format */
 235         if (st.st_mtime != mail->last_mtime) {
 236                 /* yippee, modification time has changed, let's read mail count! */
 237                 static int rep;
 238                 FILE *fp;
 239                 int reading_status = 0;
 240
 241                 /* could lock here but I don't think it's really worth it because
 242                  * this isn't going to write mail spool */
 243
 244                 mail->new_mail_count = mail->mail_count = 0;
 245
 246                 /* these flags are not supported for mbox */
 247                 mail->seen_mail_count = mail->unseen_mail_count = -1;
 248                 mail->flagged_mail_count = mail->unflagged_mail_count = -1;
 249                 mail->forwarded_mail_count = mail->unforwarded_mail_count = -1;
 250                 mail->replied_mail_count = mail->unreplied_mail_count = -1;
 251                 mail->draft_mail_count = mail->trashed_mail_count = -1;
 252
 253                 fp = open_file(mail->mbox, &rep);
 254                 if (!fp) {
 255                         return;
 256                 }
 257
 258                 /* NOTE: adds mail as new if there isn't Status-field at all */
 259
 260                 while (!feof(fp)) {
 261                         char buf[128];
 262                         int was_new = 0;
 263
 264                         if (fgets(buf, 128, fp) == NULL) {
 265                                 break;
 266                         }
 267
 268                         if (strncmp(buf, "From ", 5) == 0) {
 269                                 /* ignore MAILER-DAEMON */
 270                                 if (strncmp(buf + 5, "MAILER-DAEMON ", 14) != 0) {
 271                                         mail->mail_count++;
 272                                         was_new = 0;
 273
 274                                         if (reading_status == 1) {
 275                                                 mail->new_mail_count++;
 276                                         } else {
 277                                                 reading_status = 1;
 278                                         }
 279                                 }
 280                         } else {
 281                                 if (reading_status == 1
 282                                                 && strncmp(buf, "X-Mozilla-Status:", 17) == 0) {
 283                                         int xms = strtol(buf + 17, NULL, 16);
 284                                         /* check that mail isn't marked for deletion */
 285                                         if (xms & 0x0008) {
 286                                                 mail->trashed_mail_count++;
 287                                                 reading_status = 0;
 288                                                 /* Don't check whether the trashed email is unread */
 289                                                 continue;
 290                                         }
 291                                         /* check that mail isn't already read */
 292                                         if (!(xms & 0x0001)) {
 293                                                 mail->new_mail_count++;
 294                                                 was_new = 1;
 295                                         }
 296
 297                                         /* check for an additional X-Status header */
 298                                         reading_status = 2;
 299                                         continue;
 300                                 }
 301                                 if (reading_status == 1 && strncmp(buf, "Status:", 7) == 0) {
 302                                         /* check that mail isn't already read */
 303                                         if (strchr(buf + 7, 'R') == NULL) {
 304                                                 mail->new_mail_count++;
 305                                                 was_new = 1;
 306                                         }
 307
 308                                         reading_status = 2;
 309                                         continue;
 310                                 }
 311                                 if (reading_status >= 1 && strncmp(buf, "X-Status:", 9) == 0) {
 312                                         /* check that mail isn't marked for deletion */
 313                                         if (strchr(buf + 9, 'D') != NULL) {
 314                                                 mail->trashed_mail_count++;
 315                                                 /* If the mail was previously detected as new,
 316                                                    subtract it from the new mail count */
 317                                                 if (was_new)
 318                                                         mail->new_mail_count--;
 319                                         }
 320
 321                                         reading_status = 0;
 322                                         continue;
 323                                 }
 324                         }
 325
 326                         /* skip until \n */
 327                         while (strchr(buf, '\n') == NULL && !feof(fp)) {
 328                                 fgets(buf, 128, fp);
 329                         }
 330                 }
 331
 332                 fclose(fp);
 333
 334                 if (reading_status) {
 335                         mail->new_mail_count++;
 336                 }
 337
 338                 mail->last_mtime = st.st_mtime;
 339         }
 340 }
 341
 342 void parse_local_mail_args(struct text_object *obj, const char *arg)
 343 {
 344         float n1;
 345         char mbox[256], dst[256];
 346         struct local_mail_s *locmail;
 347
 348         if (!arg) {
 349                 n1 = 9.5;
 350                 /* Kapil: Changed from MAIL_FILE to
 351                    current_mail_spool since the latter
 352                    is a copy of the former if undefined
 353                    but the latter should take precedence
 354                    if defined */
 355                 strncpy(mbox, current_mail_spool, sizeof(mbox));
 356         } else {
 357                 if (sscanf(arg, "%s %f", mbox, &n1) != 2) {
 358                         n1 = 9.5;
 359                         strncpy(mbox, arg, sizeof(mbox));
 360                 }
 361         }
 362
 363         variable_substitute(mbox, dst, sizeof(dst));
 364
 365         locmail = malloc(sizeof(struct local_mail_s));
 366         memset(locmail, 0, sizeof(struct local_mail_s));
 367         locmail->mbox = strndup(dst, text_buffer_size);
 368         locmail->interval = n1;
 369         obj->data.opaque = locmail;
 370 }
 371
 372 #define PRINT_MAILS_GENERATOR(x) \
 373 void print_##x##mails(struct text_object *obj, char *p, int p_max_size) \
 374 { \
 375         struct local_mail_s *locmail = obj->data.opaque; \
 376         if (!locmail) \
 377                 return; \
 378         update_mail_count(locmail); \
 379         snprintf(p, p_max_size, "%d", locmail->x##mail_count); \
 380 }
 381
 382 PRINT_MAILS_GENERATOR()
 383 PRINT_MAILS_GENERATOR(new_)
 384 PRINT_MAILS_GENERATOR(seen_)
 385 PRINT_MAILS_GENERATOR(unseen_)
 386 PRINT_MAILS_GENERATOR(flagged_)
 387 PRINT_MAILS_GENERATOR(unflagged_)
 388 PRINT_MAILS_GENERATOR(forwarded_)
 389 PRINT_MAILS_GENERATOR(unforwarded_)
 390 PRINT_MAILS_GENERATOR(replied_)
 391 PRINT_MAILS_GENERATOR(unreplied_)
 392 PRINT_MAILS_GENERATOR(draft_)
 393 PRINT_MAILS_GENERATOR(trashed_)
 394
 395 void free_local_mails(struct text_object *obj)
 396 {
 397         struct local_mail_s *locmail = obj->data.opaque;
 398
 399         if (!locmail)
 400                 return;
 401
 402         if (locmail->mbox)
 403                 free(locmail->mbox);
 404         free(obj->data.opaque);
 405         obj->data.opaque = 0;
 406 }
 407
 408 #define MAXDATASIZE 1000
 409
 410 struct mail_s *parse_mail_args(char type, const char *arg)
 411 {
 412         struct mail_s *mail;
 413         char *tmp;
 414
 415         mail = malloc(sizeof(struct mail_s));
 416         memset(mail, 0, sizeof(struct mail_s));
 417
 418 #define lenstr "%1023s"
 419         if (sscanf(arg, lenstr " " lenstr " " lenstr, mail->host, mail->user, mail->pass)
 420                         != 3) {
 421                 if (type == POP3_TYPE) {
 422                         NORM_ERR("Scanning POP3 args failed");
 423                 } else if (type == IMAP_TYPE) {
 424                         NORM_ERR("Scanning IMAP args failed");
 425                 }
 426                 return 0;
 427         }
 428         // see if password needs prompting
 429         if (mail->pass[0] == '*' && mail->pass[1] == '\0') {
 430                 int fp = fileno(stdin);
 431                 struct termios term;
 432
 433                 tcgetattr(fp, &term);
 434                 term.c_lflag &= ~ECHO;
 435                 tcsetattr(fp, TCSANOW, &term);
 436                 printf("Enter mailbox password (%s@%s): ", mail->user, mail->host);
 437                 scanf(lenstr, mail->pass);
 438 #undef lenstr
 439                 printf("\n");
 440                 term.c_lflag |= ECHO;
 441                 tcsetattr(fp, TCSANOW, &term);
 442         }
 443         // now we check for optional args
 444         tmp = strstr(arg, "-r ");
 445         if (tmp) {
 446                 tmp += 3;
 447                 sscanf(tmp, "%u", &mail->retries);
 448         } else {
 449                 mail->retries = 5;      // 5 retries after failure
 450         }
 451         tmp = strstr(arg, "-i ");
 452         if (tmp) {
 453                 tmp += 3;
 454                 sscanf(tmp, "%f", &mail->interval);
 455         } else {
 456                 mail->interval = 300;   // 5 minutes
 457         }
 458         tmp = strstr(arg, "-p ");
 459         if (tmp) {
 460                 tmp += 3;
 461                 sscanf(tmp, "%lu", &mail->port);
 462         } else {
 463                 if (type == POP3_TYPE) {
 464                         mail->port = 110;       // default pop3 port
 465                 } else if (type == IMAP_TYPE) {
 466                         mail->port = 143;       // default imap port
 467                 }
 468         }
 469         if (type == IMAP_TYPE) {
 470                 tmp = strstr(arg, "-f ");
 471                 if (tmp) {
 472                         int len = MAXSIZE - 1;
 473                         tmp += 3;
 474                         if (tmp[0] == '\'') {
 475                                 len = strstr(tmp + 1, "'") - tmp;
 476                                 if (len > MAXSIZE) {
 477                                         len = MAXSIZE;
 478                                 }
 479                         }
 480                         strncpy(mail->folder, tmp + 1, len - 1);
 481                 } else {
 482                         strncpy(mail->folder, "INBOX", MAXSIZE - 1);    // default imap inbox
 483                 }
 484         }
 485         tmp = strstr(arg, "-e ");
 486         if (tmp) {
 487                 int len = MAXSIZE - 1;
 488                 tmp += 3;
 489
 490                 if (tmp[0] == '\'') {
 491                         len = strstr(tmp + 1, "'") - tmp;
 492                         if (len > MAXSIZE) {
 493                                 len = MAXSIZE;
 494                         }
 495                 }
 496                 strncpy(mail->command, tmp + 1, len - 1);
 497         } else {
 498                 mail->command[0] = '\0';
 499         }
 500         DBGP("mail args parsed: folder: '%s' command: '%s' user: '%s' host: '%s'\n",
 501                         mail->folder, mail->command, mail->user, mail->host);
 502         mail->p_timed_thread = NULL;
 503         return mail;
 504 }
 505
 506 void parse_imap_mail_args(struct text_object *obj, const char *arg)
 507 {
 508         static int rep = 0;
 509
 510         if (!arg) {
 511                 if (!global_mail && !rep) {
 512                         // something is wrong, warn once then stop
 513                         NORM_ERR("There's a problem with your mail settings.  "
 514                                         "Check that the global mail settings are properly defined"
 515                                         " (line %li).", obj->line);
 516                         rep = 1;
 517                         return;
 518                 }
 519                 obj->data.opaque = global_mail;
 520                 global_mail_use++;
 521                 return;
 522         }
 523         // proccss
 524         obj->data.opaque = parse_mail_args(IMAP_TYPE, arg);
 525 }
 526
 527 void parse_pop3_mail_args(struct text_object *obj, const char *arg)
 528 {
 529         static int rep = 0;
 530
 531         if (!arg) {
 532                 if (!global_mail && !rep) {
 533                         // something is wrong, warn once then stop
 534                         NORM_ERR("There's a problem with your mail settings.  "
 535                                         "Check that the global mail settings are properly defined"
 536                                         " (line %li).", obj->line);
 537                         rep = 1;
 538                         return;
 539                 }
 540                 obj->data.opaque = global_mail;
 541                 global_mail_use++;
 542                 return;
 543         }
 544         // proccss
 545         obj->data.opaque = parse_mail_args(POP3_TYPE, arg);
 546 }
 547
 548 void parse_global_imap_mail_args(const char *value)
 549 {
 550         global_mail = parse_mail_args(IMAP_TYPE, value);
 551 }
 552
 553 void parse_global_pop3_mail_args(const char *value)
 554 {
 555         global_mail = parse_mail_args(POP3_TYPE, value);
 556 }
 557
 558 void free_mail_obj(struct text_object *obj)
 559 {
 560         if (!obj->data.opaque)
 561                 return;
 562
 563         if (obj->data.opaque == global_mail) {
 564                 if (--global_mail_use == 0) {
 565                         free(global_mail);
 566                         global_mail = 0;
 567                 }
 568         } else {
 569                 free(obj->data.opaque);
 570                 obj->data.opaque = 0;
 571         }
 572 }
 573
 574 int imap_command(int sockfd, const char *command, char *response, const char *verify)
 575 {
 576         struct timeval fetchtimeout;
 577         fd_set fdset;
 578         int res, numbytes = 0;
 579         if (send(sockfd, command, strlen(command), 0) == -1) {
 580                 perror("send");
 581                 return -1;
 582         }
 583         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 584         fetchtimeout.tv_usec = 0;
 585         FD_ZERO(&fdset);
 586         FD_SET(sockfd, &fdset);
 587         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 588         if (res > 0) {
 589                 if ((numbytes = recv(sockfd, response, MAXDATASIZE - 1, 0)) == -1) {
 590                         perror("recv");
 591                         return -1;
 592                 }
 593         }
 594         DBGP2("imap_command()  command: %s", command);
 595         DBGP2("imap_command() received: %s", response);
 596         response[numbytes] = '\0';
 597         if (strstr(response, verify) == NULL) {
 598                 return -1;
 599         }
 600         return 0;
 601 }
 602
 603 int imap_check_status(char *recvbuf, struct mail_s *mail)
 604 {
 605         char *reply;
 606         reply = strstr(recvbuf, " (MESSAGES ");
 607         if (!reply || strlen(reply) < 2) {
 608                 return -1;
 609         }
 610         reply += 2;
 611         *strchr(reply, ')') = '\0';
 612         if (reply == NULL) {
 613                 NORM_ERR("Error parsing IMAP response: %s", recvbuf);
 614                 return -1;
 615         } else {
 616                 timed_thread_lock(mail->p_timed_thread);
 617                 sscanf(reply, "MESSAGES %lu UNSEEN %lu", &mail->messages,
 618                                 &mail->unseen);
 619                 timed_thread_unlock(mail->p_timed_thread);
 620         }
 621         return 0;
 622 }
 623
 624 void imap_unseen_command(struct mail_s *mail, unsigned long old_unseen, unsigned long old_messages)
 625 {
 626         if (strlen(mail->command) > 1 && (mail->unseen > old_unseen
 627                                 || (mail->messages > old_messages && mail->unseen > 0))) {
 628                 // new mail goodie
 629                 if (system(mail->command) == -1) {
 630                         perror("system()");
 631                 }
 632         }
 633 }
 634
 635 static void ensure_mail_thread(struct mail_s *mail,
 636                 void *thread(void *), const char *text)
 637 {
 638         if (mail->p_timed_thread)
 639                 return;
 640
 641         mail->p_timed_thread = timed_thread_create(thread,
 642                                 mail, mail->interval * 1000000);
 643         if (!mail->p_timed_thread) {
 644                 NORM_ERR("Error creating %s timed thread", text);
 645         }
 646         timed_thread_register(mail->p_timed_thread,
 647                         &mail->p_timed_thread);
 648         if (timed_thread_run(mail->p_timed_thread)) {
 649                 NORM_ERR("Error running %s timed thread", text);
 650         }
 651 }
 652
 653 static void *imap_thread(void *arg)
 654 {
 655         int sockfd, numbytes;
 656         char recvbuf[MAXDATASIZE];
 657         char sendbuf[MAXDATASIZE];
 658         unsigned int fail = 0;
 659         unsigned long old_unseen = ULONG_MAX;
 660         unsigned long old_messages = ULONG_MAX;
 661         struct stat stat_buf;
 662         struct mail_s *mail = (struct mail_s *)arg;
 663         int has_idle = 0;
 664         int threadfd = timed_thread_readfd(mail->p_timed_thread);
 665         char resolved_host = 0;
 666         struct addrinfo hints;
 667         struct addrinfo *ai = 0, *rp;
 668         char portbuf[8];
 669
 670         while (fail < mail->retries) {
 671                 struct timeval fetchtimeout;
 672                 int res;
 673                 fd_set fdset;
 674
 675                 if (fail > 0) {
 676                         NORM_ERR("Trying IMAP connection again for %s@%s (try %u/%u)",
 677                                         mail->user, mail->host, fail + 1, mail->retries);
 678                         resolved_host = 0; /* force us to resolve the hostname again */
 679                 }
 680                 if (!resolved_host) {
 681                         memset(&hints, 0, sizeof(struct addrinfo));
 682                         hints.ai_family = AF_UNSPEC;
 683                         hints.ai_socktype = SOCK_STREAM;
 684                         hints.ai_flags = 0;
 685                         hints.ai_protocol = 0;
 686                         snprintf(portbuf, 8, "%lu", mail->port);
 687
 688                         res = getaddrinfo(mail->host, portbuf, &hints, &ai);
 689                         if (res != 0) {
 690                                 NORM_ERR("IMAP getaddrinfo: %s", gai_strerror(res));
 691                                 fail++;
 692                                 break;
 693                         }
 694                         resolved_host = 1;
 695                 }
 696                 do {
 697                         for (rp = ai; rp != NULL; rp = rp->ai_next) {
 698                                 sockfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
 699                                 if (sockfd == -1) {
 700                                         continue;
 701                                 }
 702                                 if (connect(sockfd, rp->ai_addr, rp->ai_addrlen) != -1) {
 703                                         break;
 704                                 }
 705                                 close(sockfd);
 706                         }
 707                         freeaddrinfo(ai);
 708                         ai = 0;
 709                         if (rp == NULL) {
 710                                 perror("connect");
 711                                 fail++;
 712                                 break;
 713                         }
 714
 715                         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 716                         fetchtimeout.tv_usec = 0;
 717                         FD_ZERO(&fdset);
 718                         FD_SET(sockfd, &fdset);
 719                         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 720                         if (res > 0) {
 721                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 722                                         perror("recv");
 723                                         fail++;
 724                                         break;
 725                                 }
 726                         } else {
 727                                 NORM_ERR("IMAP connection failed: timeout");
 728                                 fail++;
 729                                 break;
 730                         }
 731                         recvbuf[numbytes] = '\0';
 732                         DBGP2("imap_thread() received: %s", recvbuf);
 733                         if (strstr(recvbuf, "* OK") != recvbuf) {
 734                                 NORM_ERR("IMAP connection failed, probably not an IMAP server");
 735                                 fail++;
 736                                 break;
 737                         }
 738                         strncpy(sendbuf, "abc CAPABILITY\r\n", MAXDATASIZE);
 739                         if (imap_command(sockfd, sendbuf, recvbuf, "abc OK")) {
 740                                 fail++;
 741                                 break;
 742                         }
 743                         if (strstr(recvbuf, " IDLE ") != NULL) {
 744                                 has_idle = 1;
 745                         }
 746
 747                         strncpy(sendbuf, "a1 login ", MAXDATASIZE);
 748                         strncat(sendbuf, mail->user, MAXDATASIZE - strlen(sendbuf) - 1);
 749                         strncat(sendbuf, " ", MAXDATASIZE - strlen(sendbuf) - 1);
 750                         strncat(sendbuf, mail->pass, MAXDATASIZE - strlen(sendbuf) - 1);
 751                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 752                         if (imap_command(sockfd, sendbuf, recvbuf, "a1 OK")) {
 753                                 fail++;
 754                                 break;
 755                         }
 756
 757                         strncpy(sendbuf, "a2 STATUS \"", MAXDATASIZE);
 758                         strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 759                         strncat(sendbuf, "\" (MESSAGES UNSEEN)\r\n",
 760                                         MAXDATASIZE - strlen(sendbuf) - 1);
 761                         if (imap_command(sockfd, sendbuf, recvbuf, "a2 OK")) {
 762                                 fail++;
 763                                 break;
 764                         }
 765
 766                         if (imap_check_status(recvbuf, mail)) {
 767                                 fail++;
 768                                 break;
 769                         }
 770                         imap_unseen_command(mail, old_unseen, old_messages);
 771                         fail = 0;
 772                         old_unseen = mail->unseen;
 773                         old_messages = mail->messages;
 774
 775                         if (has_idle) {
 776                                 strncpy(sendbuf, "a4 SELECT \"", MAXDATASIZE);
 777                                 strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 778                                 strncat(sendbuf, "\"\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
 779                                 if (imap_command(sockfd, sendbuf, recvbuf, "a4 OK")) {
 780                                         fail++;
 781                                         break;
 782                                 }
 783
 784                                 strncpy(sendbuf, "a5 IDLE\r\n", MAXDATASIZE);
 785                                 if (imap_command(sockfd, sendbuf, recvbuf, "+ idling")) {
 786                                         fail++;
 787                                         break;
 788                                 }
 789                                 recvbuf[0] = '\0';
 790
 791                                 while (1) {
 792                                         /*
 793                                          * RFC 2177 says we have to re-idle every 29 minutes.
 794                                          * We'll do it every 10 minutes to be safe.
 795                                          */
 796                                         fetchtimeout.tv_sec = 600;
 797                                         fetchtimeout.tv_usec = 0;
 798                                         DBGP("idling...");
 799                                         FD_ZERO(&fdset);
 800                                         FD_SET(sockfd, &fdset);
 801                                         FD_SET(threadfd, &fdset);
 802                                         res = select(MAX(sockfd + 1, threadfd + 1), &fdset, NULL,
 803                                                         NULL, &fetchtimeout);
 804                                         DBGP("done idling");
 805                                         if (timed_thread_test(mail->p_timed_thread, 1) || (res == -1 && errno == EINTR) || FD_ISSET(threadfd, &fdset)) {
 806                                                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
 807                                                         /* if a valid socket, close it */
 808                                                         close(sockfd);
 809                                                 }
 810                                                 timed_thread_exit(mail->p_timed_thread);
 811                                         } else if (res > 0) {
 812                                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 813                                                         perror("recv idling");
 814                                                         fail++;
 815                                                         break;
 816                                                 }
 817                                         }
 818                                         recvbuf[numbytes] = '\0';
 819                                         DBGP2("imap_thread() received: %s", recvbuf);
 820                                         if (strlen(recvbuf) > 2) {
 821                                                 unsigned long messages, recent = 0;
 822                                                 char *buf = recvbuf;
 823                                                 char force_check = 0;
 824                                                 buf = strstr(buf, "EXISTS");
 825                                                 while (buf && strlen(buf) > 1 && strstr(buf + 1, "EXISTS")) {
 826                                                         buf = strstr(buf + 1, "EXISTS");
 827                                                 }
 828                                                 if (buf) {
 829                                                         // back up until we reach '*'
 830                                                         while (buf >= recvbuf && buf[0] != '*') {
 831                                                                 buf--;
 832                                                         }
 833                                                         if (sscanf(buf, "* %lu EXISTS\r\n", &messages) == 1) {
 834                                                                 timed_thread_lock(mail->p_timed_thread);
 835                                                                 if (mail->messages != messages) {
 836                                                                         force_check = 1;
 837                                                                 }
 838                                                                 timed_thread_unlock(mail->p_timed_thread);
 839                                                         }
 840                                                 }
 841                                                 buf = recvbuf;
 842                                                 buf = strstr(buf, "RECENT");
 843                                                 while (buf && strlen(buf) > 1 && strstr(buf + 1, "RECENT")) {
 844                                                         buf = strstr(buf + 1, "RECENT");
 845                                                 }
 846                                                 if (buf) {
 847                                                         // back up until we reach '*'
 848                                                         while (buf >= recvbuf && buf[0] != '*') {
 849                                                                 buf--;
 850                                                         }
 851                                                         if (sscanf(buf, "* %lu RECENT\r\n", &recent) != 1) {
 852                                                                 recent = 0;
 853                                                         }
 854                                                 }
 855                                                 /*
 856                                                  * check if we got a FETCH from server, recent was
 857                                                  * something other than 0, or we had a timeout
 858                                                  */
 859                                                 buf = recvbuf;
 860                                                 if (recent > 0 || (buf && strstr(buf, " FETCH ")) || fetchtimeout.tv_sec == 0 || force_check) {
 861                                                         // re-check messages and unseen
 862                                                         if (imap_command(sockfd, "DONE\r\n", recvbuf, "a5 OK")) {
 863                                                                 fail++;
 864                                                                 break;
 865                                                         }
 866                                                         strncpy(sendbuf, "a2 STATUS \"", MAXDATASIZE);
 867                                                         strncat(sendbuf, mail->folder, MAXDATASIZE - strlen(sendbuf) - 1);
 868                                                         strncat(sendbuf, "\" (MESSAGES UNSEEN)\r\n",
 869                                                                         MAXDATASIZE - strlen(sendbuf) - 1);
 870                                                         if (imap_command(sockfd, sendbuf, recvbuf, "a2 OK")) {
 871                                                                 fail++;
 872                                                                 break;
 873                                                         }
 874                                                         if (imap_check_status(recvbuf, mail)) {
 875                                                                 fail++;
 876                                                                 break;
 877                                                         }
 878                                                         strncpy(sendbuf, "a5 IDLE\r\n", MAXDATASIZE);
 879                                                         if (imap_command(sockfd, sendbuf, recvbuf, "+ idling")) {
 880                                                                 fail++;
 881                                                                 break;
 882                                                         }
 883                                                 }
 884                                                 /*
 885                                                  * check if we got a BYE from server
 886                                                  */
 887                                                 buf = recvbuf;
 888                                                 if (buf && strstr(buf, "* BYE")) {
 889                                                         // need to re-connect
 890                                                         break;
 891                                                 }
 892                                         } else {
 893                                                 fail++;
 894                                                 break;
 895                                         }
 896                                         imap_unseen_command(mail, old_unseen, old_messages);
 897                                         fail = 0;
 898                                         old_unseen = mail->unseen;
 899                                         old_messages = mail->messages;
 900                                 }
 901                                 if (fail) break;
 902                         } else {
 903                                 strncpy(sendbuf, "a3 logout\r\n", MAXDATASIZE);
 904                                 if (send(sockfd, sendbuf, strlen(sendbuf), 0) == -1) {
 905                                         perror("send a3");
 906                                         fail++;
 907                                         break;
 908                                 }
 909                                 fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 910                                 fetchtimeout.tv_usec = 0;
 911                                 FD_ZERO(&fdset);
 912                                 FD_SET(sockfd, &fdset);
 913                                 res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 914                                 if (res > 0) {
 915                                         if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
 916                                                 perror("recv a3");
 917                                                 fail++;
 918                                                 break;
 919                                         }
 920                                 }
 921                                 recvbuf[numbytes] = '\0';
 922                                 DBGP2("imap_thread() received: %s", recvbuf);
 923                                 if (strstr(recvbuf, "a3 OK") == NULL) {
 924                                         NORM_ERR("IMAP logout failed: %s", recvbuf);
 925                                         fail++;
 926                                         break;
 927                                 }
 928                         }
 929                 } while (0);
 930                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
 931                         /* if a valid socket, close it */
 932                         close(sockfd);
 933                 }
 934                 if (timed_thread_test(mail->p_timed_thread, 0)) {
 935                         timed_thread_exit(mail->p_timed_thread);
 936                 }
 937         }
 938         mail->unseen = 0;
 939         mail->messages = 0;
 940         return 0;
 941 }
 942
 943 void print_imap_unseen(struct text_object *obj, char *p, int p_max_size)
 944 {
 945         struct mail_s *mail = obj->data.opaque;
 946
 947         if (!mail)
 948                 return;
 949
 950         ensure_mail_thread(mail, imap_thread, "imap");
 951
 952         if (mail && mail->p_timed_thread) {
 953                 timed_thread_lock(mail->p_timed_thread);
 954                 snprintf(p, p_max_size, "%lu", mail->unseen);
 955                 timed_thread_unlock(mail->p_timed_thread);
 956         }
 957 }
 958
 959 void print_imap_messages(struct text_object *obj, char *p, int p_max_size)
 960 {
 961         struct mail_s *mail = obj->data.opaque;
 962
 963         if (!mail)
 964                 return;
 965
 966         ensure_mail_thread(mail, imap_thread, "imap");
 967
 968         if (mail && mail->p_timed_thread) {
 969                 timed_thread_lock(mail->p_timed_thread);
 970                 snprintf(p, p_max_size, "%lu", mail->messages);
 971                 timed_thread_unlock(mail->p_timed_thread);
 972         }
 973 }
 974
 975 int pop3_command(int sockfd, const char *command, char *response, const char *verify)
 976 {
 977         struct timeval fetchtimeout;
 978         fd_set fdset;
 979         int res, numbytes = 0;
 980         if (send(sockfd, command, strlen(command), 0) == -1) {
 981                 perror("send");
 982                 return -1;
 983         }
 984         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
 985         fetchtimeout.tv_usec = 0;
 986         FD_ZERO(&fdset);
 987         FD_SET(sockfd, &fdset);
 988         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
 989         if (res > 0) {
 990                 if ((numbytes = recv(sockfd, response, MAXDATASIZE - 1, 0)) == -1) {
 991                         perror("recv");
 992                         return -1;
 993                 }
 994         }
 995         DBGP2("pop3_command() received: %s", response);
 996         response[numbytes] = '\0';
 997         if (strstr(response, verify) == NULL) {
 998                 return -1;
 999         }
1000         return 0;
1001 }
1002
1003 static void *pop3_thread(void *arg)
1004 {
1005         int sockfd, numbytes;
1006         char recvbuf[MAXDATASIZE];
1007         char sendbuf[MAXDATASIZE];
1008         char *reply;
1009         unsigned int fail = 0;
1010         unsigned long old_unseen = ULONG_MAX;
1011         struct stat stat_buf;
1012         struct mail_s *mail = (struct mail_s *)arg;
1013         char resolved_host = 0;
1014         struct addrinfo hints;
1015         struct addrinfo *ai = 0, *rp;
1016         char portbuf[8];
1017
1018         while (fail < mail->retries) {
1019                 struct timeval fetchtimeout;
1020                 int res;
1021                 fd_set fdset;
1022
1023                 if (fail > 0) {
1024                         NORM_ERR("Trying POP3 connection again for %s@%s (try %u/%u)",
1025                                         mail->user, mail->host, fail + 1, mail->retries);
1026                         resolved_host = 0; /* force us to resolve the hostname again */
1027                 }
1028                 if (!resolved_host) {
1029                         memset(&hints, 0, sizeof(struct addrinfo));
1030                         hints.ai_family = AF_UNSPEC;
1031                         hints.ai_socktype = SOCK_STREAM;
1032                         hints.ai_flags = 0;
1033                         hints.ai_protocol = 0;
1034                         snprintf(portbuf, 8, "%lu", mail->port);
1035
1036                         res = getaddrinfo(mail->host, portbuf, &hints, &ai);
1037                         if (res != 0) {
1038                                 NORM_ERR("POP3 getaddrinfo: %s", gai_strerror(res));
1039                                 fail++;
1040                                 break;
1041                         }
1042                         resolved_host = 1;
1043                 }
1044                 do {
1045                         for (rp = ai; rp != NULL; rp = rp->ai_next) {
1046                                 sockfd = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
1047                                 if (sockfd == -1) {
1048                                         continue;
1049                                 }
1050                                 if (connect(sockfd, rp->ai_addr, rp->ai_addrlen) != -1) {
1051                                         break;
1052                                 }
1053                                 close(sockfd);
1054                         }
1055                         freeaddrinfo(ai);
1056                         ai = 0;
1057                         if (rp == NULL) {
1058                                 perror("connect");
1059                                 fail++;
1060                                 break;
1061                         }
1062
1063                         fetchtimeout.tv_sec = 60;       // 60 second timeout i guess
1064                         fetchtimeout.tv_usec = 0;
1065                         FD_ZERO(&fdset);
1066                         FD_SET(sockfd, &fdset);
1067                         res = select(sockfd + 1, &fdset, NULL, NULL, &fetchtimeout);
1068                         if (res > 0) {
1069                                 if ((numbytes = recv(sockfd, recvbuf, MAXDATASIZE - 1, 0)) == -1) {
1070                                         perror("recv");
1071                                         fail++;
1072                                         break;
1073                                 }
1074                         } else {
1075                                 NORM_ERR("POP3 connection failed: timeout\n");
1076                                 fail++;
1077                                 break;
1078                         }
1079                         DBGP2("pop3_thread received: %s", recvbuf);
1080                         recvbuf[numbytes] = '\0';
1081                         if (strstr(recvbuf, "+OK ") != recvbuf) {
1082                                 NORM_ERR("POP3 connection failed, probably not a POP3 server");
1083                                 fail++;
1084                                 break;
1085                         }
1086                         strncpy(sendbuf, "USER ", MAXDATASIZE);
1087                         strncat(sendbuf, mail->user, MAXDATASIZE - strlen(sendbuf) - 1);
1088                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
1089                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
1090                                 fail++;
1091                                 break;
1092                         }
1093
1094                         strncpy(sendbuf, "PASS ", MAXDATASIZE);
1095                         strncat(sendbuf, mail->pass, MAXDATASIZE - strlen(sendbuf) - 1);
1096                         strncat(sendbuf, "\r\n", MAXDATASIZE - strlen(sendbuf) - 1);
1097                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
1098                                 NORM_ERR("POP3 server login failed: %s", recvbuf);
1099                                 fail++;
1100                                 break;
1101                         }
1102
1103                         strncpy(sendbuf, "STAT\r\n", MAXDATASIZE);
1104                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK ")) {
1105                                 perror("send STAT");
1106                                 fail++;
1107                                 break;
1108                         }
1109
1110                         // now we get the data
1111                         reply = recvbuf + 4;
1112                         if (reply == NULL) {
1113                                 NORM_ERR("Error parsing POP3 response: %s", recvbuf);
1114                                 fail++;
1115                                 break;
1116                         } else {
1117                                 timed_thread_lock(mail->p_timed_thread);
1118                                 sscanf(reply, "%lu %lu", &mail->unseen, &mail->used);
1119                                 timed_thread_unlock(mail->p_timed_thread);
1120                         }
1121
1122                         strncpy(sendbuf, "QUIT\r\n", MAXDATASIZE);
1123                         if (pop3_command(sockfd, sendbuf, recvbuf, "+OK")) {
1124                                 NORM_ERR("POP3 logout failed: %s", recvbuf);
1125                                 fail++;
1126                                 break;
1127                         }
1128
1129                         if (strlen(mail->command) > 1 && mail->unseen > old_unseen) {
1130                                 // new mail goodie
1131                                 if (system(mail->command) == -1) {
1132                                         perror("system()");
1133                                 }
1134                         }
1135                         fail = 0;
1136                         old_unseen = mail->unseen;
1137                 } while (0);
1138                 if ((fstat(sockfd, &stat_buf) == 0) && S_ISSOCK(stat_buf.st_mode)) {
1139                         /* if a valid socket, close it */
1140                         close(sockfd);
1141                 }
1142                 if (timed_thread_test(mail->p_timed_thread, 0)) {
1143                         timed_thread_exit(mail->p_timed_thread);
1144                 }
1145         }
1146         mail->unseen = 0;
1147         mail->used = 0;
1148         return 0;
1149 }
1150
1151 void print_pop3_unseen(struct text_object *obj, char *p, int p_max_size)
1152 {
1153         struct mail_s *mail = obj->data.opaque;
1154
1155         if (!mail)
1156                 return;
1157
1158         ensure_mail_thread(mail, pop3_thread, "pop3");
1159
1160         if (mail && mail->p_timed_thread) {
1161                 timed_thread_lock(mail->p_timed_thread);
1162                 snprintf(p, p_max_size, "%lu", mail->unseen);
1163                 timed_thread_unlock(mail->p_timed_thread);
1164         }
1165 }
1166
1167 void print_pop3_used(struct text_object *obj, char *p, int p_max_size)
1168 {
1169         struct mail_s *mail = obj->data.opaque;
1170
1171         if (!mail)
1172                 return;
1173
1174         ensure_mail_thread(mail, pop3_thread, "pop3");
1175
1176         if (mail && mail->p_timed_thread) {
1177                 timed_thread_lock(mail->p_timed_thread);
1178                 snprintf(p, p_max_size, "%.1f",
1179                                 mail->used / 1024.0 / 1024.0);
1180                 timed_thread_unlock(mail->p_timed_thread);
1181         }
1182 }