src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <dirent.h>
  29 #include <unistd.h>
  30 #include <ctype.h>
  31
  32 #include "intl.h"
  33 #include "imap.h"
  34 #include "socket.h"
  35 #include "recv.h"
  36 #include "procmsg.h"
  37 #include "procheader.h"
  38 #include "folder.h"
  39 #include "statusbar.h"
  40 #include "prefs_account.h"
  41 #include "codeconv.h"
  42 #include "utils.h"
  43
  44 #define IMAP4_PORT      143
  45
  46 static GList *session_list = NULL;
  47
  48 static gint imap_cmd_count = 0;
  49
  50 static IMAPSession *imap_session_connect_if_not (Folder         *folder);
  51
  52 static gint imap_do_copy                (Folder         *folder,
  53                                          FolderItem     *dest,
  54                                          MsgInfo        *msginfo,
  55                                          gboolean        remove_source);
  56 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  57                                          FolderItem     *dest,
  58                                          GSList         *msglist,
  59                                          gboolean        remove_source);
  60
  61 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
  62                                                  FolderItem     *item,
  63                                                  gint            first,
  64                                                  gint            last);
  65 static GSList *imap_delete_cached_messages      (GSList         *mlist,
  66                                                  gint            first,
  67                                                  gint            last);
  68 static void imap_delete_all_cached_messages     (FolderItem     *item);
  69
  70 static SockInfo *imap_open              (const gchar    *server,
  71                                          gushort         port,
  72                                          gchar          *buf);
  73
  74 static gint imap_set_article_flags      (IMAPSession    *session,
  75                                          gint            first,
  76                                          gint            last,
  77                                          IMAPFlags       flag,
  78                                          gboolean        is_set);
  79 static gint imap_select                 (IMAPSession    *session,
  80                                          IMAPFolder     *folder,
  81                                          const gchar    *path,
  82                                          gint           *exists,
  83                                          gint           *recent,
  84                                          gint           *unseen,
  85                                          gulong         *uid);
  86
  87 static void imap_parse_namespace                (IMAPSession    *session,
  88                                                  IMAPFolder     *folder);
  89 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
  90                                                  const gchar    *path);
  91
  92 static gchar *imap_parse_atom           (SockInfo *sock,
  93                                          gchar    *src,
  94                                          gchar    *dest,
  95                                          gchar    *orig_buf);
  96 static gchar *imap_parse_one_address    (SockInfo *sock,
  97                                          gchar    *start,
  98                                          gchar    *out_from_str,
  99                                          gchar    *out_fromname_str,
 100                                          gchar    *orig_buf);
 101 static gchar *imap_parse_address        (SockInfo *sock,
 102                                          gchar    *start,
 103                                          gchar   **out_from_str,
 104                                          gchar   **out_fromname_str,
 105                                          gchar    *orig_buf);
 106 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 107 static MsgInfo *imap_parse_envelope     (SockInfo *sock,
 108                                          gchar    *line_str);
 109
 110 /* low-level IMAP4rev1 commands */
 111 static gint imap_cmd_login      (SockInfo       *sock,
 112                                  const gchar    *user,
 113                                  const gchar    *pass);
 114 static gint imap_cmd_logout     (SockInfo       *sock);
 115 static gint imap_cmd_noop       (SockInfo       *sock);
 116 static gint imap_cmd_namespace  (SockInfo       *sock,
 117                                  gchar         **ns_str);
 118 static gint imap_cmd_select     (SockInfo       *sock,
 119                                  const gchar    *folder,
 120                                  gint           *exists,
 121                                  gint           *recent,
 122                                  gint           *unseen,
 123                                  gulong         *uid);
 124 static gint imap_cmd_status     (SockInfo       *sock,
 125                                  const gchar    *folder,
 126                                  const gchar    *status);
 127 static gint imap_cmd_create     (SockInfo       *sock,
 128                                  const gchar    *folder);
 129 static gint imap_cmd_delete     (SockInfo       *sock,
 130                                  const gchar    *folder);
 131 static gint imap_cmd_envelope   (SockInfo       *sock,
 132                                  gint            first,
 133                                  gint            last);
 134 #if 0
 135 static gint imap_cmd_search     (SockInfo       *sock,
 136                                  GSList         *numlist);
 137 #endif
 138 static gint imap_cmd_fetch      (SockInfo       *sock,
 139                                  gint            num,
 140                                  const gchar    *filename);
 141 static gint imap_cmd_append     (SockInfo       *sock,
 142                                  const gchar    *destfolder,
 143                                  const gchar    *file);
 144 static gint imap_cmd_copy       (SockInfo       *sock,
 145                                  gint            num,
 146                                  const gchar    *destfolder);
 147 static gint imap_cmd_store      (SockInfo       *sock,
 148                                  gint            first,
 149                                  gint            last,
 150                                  gchar          *sub_cmd);
 151 static gint imap_cmd_expunge    (SockInfo       *sock);
 152
 153 static gint imap_cmd_ok         (SockInfo       *sock,
 154                                  GPtrArray      *argbuf);
 155 static void imap_cmd_gen_send   (SockInfo       *sock,
 156                                  const gchar    *format, ...);
 157 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 158                                  gchar          *buf,
 159                                  gint            size);
 160
 161 /* misc utility functions */
 162 static gchar *strchr_cpy                        (const gchar    *src,
 163                                                  gchar           ch,
 164                                                  gchar          *dest,
 165                                                  gint            len);
 166 static gchar *search_array_contain_str          (GPtrArray      *array,
 167                                                  gchar          *str);
 168 static void imap_path_separator_subst           (gchar          *str,
 169                                                  gchar           separator);
 170
 171 static IMAPSession *imap_session_connect_if_not(Folder *folder)
 172 {
 173         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 174
 175         g_return_val_if_fail(folder != NULL, NULL);
 176         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 177         g_return_val_if_fail(folder->account != NULL, NULL);
 178
 179         if (!rfolder->session) {
 180                 rfolder->session =
 181                         imap_session_new(folder->account->recv_server,
 182                                          IMAP4_PORT,
 183                                          folder->account->userid,
 184                                          folder->account->passwd);
 185                 if (rfolder->session)
 186                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 187                                              IMAP_FOLDER(folder));
 188                 statusbar_pop_all();
 189                 return IMAP_SESSION(rfolder->session);
 190         }
 191
 192         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 193                 log_warning(_("IMAP4 connection to %s:%d has been"
 194                               " disconnected. Reconnecting...\n"),
 195                             folder->account->recv_server, IMAP4_PORT);
 196                 session_destroy(rfolder->session);
 197                 rfolder->session =
 198                         imap_session_new(folder->account->recv_server,
 199                                          IMAP4_PORT, folder->account->userid,
 200                                          folder->account->passwd);
 201                 if (rfolder->session)
 202                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 203                                              IMAP_FOLDER(folder));
 204         }
 205
 206         statusbar_pop_all();
 207         return IMAP_SESSION(rfolder->session);
 208 }
 209
 210 Session *imap_session_new(const gchar *server, gushort port,
 211                           const gchar *user, const gchar *pass)
 212 {
 213         gchar buf[IMAPBUFSIZE];
 214         IMAPSession *session;
 215         SockInfo *imap_sock;
 216
 217         g_return_val_if_fail(server != NULL, NULL);
 218
 219         log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 220                     server, port);
 221
 222         if ((imap_sock = imap_open(server, port, buf)) == NULL)
 223                 return NULL;
 224         if (imap_cmd_login(imap_sock, user, pass) != IMAP_SUCCESS) {
 225                 imap_cmd_logout(imap_sock);
 226                 sock_close(imap_sock);
 227                 return NULL;
 228         }
 229
 230         session = g_new(IMAPSession, 1);
 231         SESSION(session)->type      = SESSION_IMAP;
 232         SESSION(session)->server    = g_strdup(server);
 233         SESSION(session)->sock      = imap_sock;
 234         SESSION(session)->connected = TRUE;
 235         SESSION(session)->phase     = SESSION_READY;
 236         SESSION(session)->data      = NULL;
 237         session->mbox = NULL;
 238
 239         session_list = g_list_append(session_list, session);
 240
 241         return SESSION(session);
 242 }
 243
 244 void imap_session_destroy(IMAPSession *session)
 245 {
 246         sock_close(SESSION(session)->sock);
 247         SESSION(session)->sock = NULL;
 248
 249         g_free(session->mbox);
 250
 251         session_list = g_list_remove(session_list, session);
 252 }
 253
 254 void imap_session_destroy_all(void)
 255 {
 256         while (session_list != NULL) {
 257                 IMAPSession *session = (IMAPSession *)session_list->data;
 258
 259                 imap_cmd_logout(SESSION(session)->sock);
 260                 imap_session_destroy(session);
 261         }
 262 }
 263
 264 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 265 {
 266         GSList *mlist = NULL;
 267         IMAPSession *session;
 268         gint ok, exists = 0, recent = 0, unseen = 0, begin = 1;
 269         gulong uid = 0, last_uid;
 270
 271         g_return_val_if_fail(folder != NULL, NULL);
 272         g_return_val_if_fail(item != NULL, NULL);
 273         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 274         g_return_val_if_fail(folder->account != NULL, NULL);
 275
 276         session = imap_session_connect_if_not(folder);
 277
 278         if (!session) {
 279                 mlist = procmsg_read_cache(item, FALSE);
 280                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 281                 procmsg_set_flags(mlist, item);
 282                 statusbar_pop_all();
 283                 return mlist;
 284         }
 285
 286         last_uid = item->mtime;
 287
 288         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 289                          &exists, &recent, &unseen, &uid);
 290         if (ok != IMAP_SUCCESS) {
 291                 statusbar_pop_all();
 292                 return NULL;
 293         }
 294
 295         if (use_cache) {
 296                 gint cache_last;
 297
 298                 mlist = procmsg_read_cache(item, FALSE);
 299                 procmsg_set_flags(mlist, item);
 300                 cache_last = procmsg_get_last_num_in_cache(mlist);
 301
 302                 /* calculating the range of envelope to get */
 303                 if (exists < cache_last) {
 304                         /* some messages are deleted (get all) */
 305                         begin = 1;
 306                 } else if (exists == cache_last) {
 307                         if (last_uid != 0 && last_uid != uid) {
 308                                 /* some recent but deleted (get all) */
 309                                 begin = 1;
 310                         } else {
 311                                 /* mailbox unchanged (get none)*/
 312                                 begin = -1;
 313                         }
 314                 } else {
 315                         if (exists == cache_last + recent) {
 316                                 /* some recent */
 317                                 begin = cache_last + 1;
 318                         } else {
 319                                 /* some recent but deleted (get all) */
 320                                 begin = 1;
 321                         }
 322                 }
 323
 324                 item->mtime = uid;
 325         }
 326
 327         if (begin > 0) {
 328                 GSList *newlist = NULL;
 329
 330                 mlist = imap_delete_cached_messages(mlist, begin, G_MAXINT);
 331                 if (begin <= exists)
 332                         newlist = imap_get_uncached_messages
 333                                 (session, item, begin, exists);
 334                 mlist = g_slist_concat(mlist, newlist);
 335         }
 336
 337         item->last_num = exists;
 338
 339         statusbar_pop_all();
 340
 341         return mlist;
 342 }
 343
 344 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint num)
 345 {
 346         gchar *path, *filename;
 347         IMAPSession *session;
 348         gint ok;
 349
 350         g_return_val_if_fail(folder != NULL, NULL);
 351         g_return_val_if_fail(item != NULL, NULL);
 352
 353         session = imap_session_connect_if_not(folder);
 354
 355         path = folder_item_get_path(item);
 356         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 357         g_free(path);
 358
 359         if (is_file_exist(filename)) {
 360                 debug_print(_("message %d has been already cached.\n"), num);
 361                 return filename;
 362         }
 363
 364         if (!session) {
 365                 g_free(filename);
 366                 return NULL;
 367         }
 368
 369         debug_print(_("getting message %d...\n"), num);
 370         ok = imap_cmd_fetch(SESSION(session)->sock, num, filename);
 371
 372         statusbar_pop_all();
 373
 374         if (ok != IMAP_SUCCESS) {
 375                 g_warning(_("can't fetch message %d\n"), num);
 376                 g_free(filename);
 377                 return NULL;
 378         }
 379
 380         return filename;
 381 }
 382
 383 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 384                   gboolean remove_source)
 385 {
 386         IMAPSession *session;
 387         gint ok;
 388
 389         g_return_val_if_fail(folder != NULL, -1);
 390         g_return_val_if_fail(dest != NULL, -1);
 391         g_return_val_if_fail(file != NULL, -1);
 392
 393         session = imap_session_connect_if_not(folder);
 394         if (!session)
 395                 return -1;
 396
 397         if (dest->last_num < 0) {
 398                 imap_scan_folder(folder, dest);
 399                 if (dest->last_num < 0) return -1;
 400         }
 401
 402         ok = imap_cmd_append(SESSION(session)->sock, dest->path, file);
 403         if (ok != IMAP_SUCCESS) {
 404                 g_warning(_("can't append message %s\n"), file);
 405                 return -1;
 406         }
 407
 408         if (remove_source) {
 409                 if (unlink(file) < 0)
 410                         FILE_OP_ERROR(file, "unlink");
 411         }
 412
 413         return dest->last_num;
 414 }
 415
 416 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 417                          gboolean remove_source)
 418 {
 419         gchar *destdir;
 420         IMAPSession *session;
 421         IMAPNameSpace *namespace;
 422         gint ok;
 423
 424         g_return_val_if_fail(folder != NULL, -1);
 425         g_return_val_if_fail(folder->type == F_IMAP, -1);
 426         g_return_val_if_fail(dest != NULL, -1);
 427         g_return_val_if_fail(msginfo != NULL, -1);
 428
 429         session = imap_session_connect_if_not(folder);
 430         if (!session) return -1;
 431
 432         if (msginfo->folder == dest) {
 433                 g_warning(_("the src folder is identical to the dest.\n"));
 434                 return -1;
 435         }
 436
 437         Xstrdup_a(destdir, dest->path, return -1);
 438         namespace = imap_find_namespace(IMAP_FOLDER(folder), destdir);
 439         if (namespace && namespace->separator)
 440                 imap_path_separator_subst(destdir, namespace->separator);
 441
 442         if (remove_source)
 443                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 444                             msginfo->folder->path, G_DIR_SEPARATOR,
 445                             msginfo->msgnum, destdir);
 446         else
 447                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 448                             msginfo->folder->path, G_DIR_SEPARATOR,
 449                             msginfo->msgnum, destdir);
 450
 451         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 452
 453         if (ok == IMAP_SUCCESS && remove_source) {
 454                 imap_set_article_flags(session, msginfo->msgnum, msginfo->msgnum,
 455                                        IMAP_FLAG_DELETED, TRUE);
 456                 imap_cmd_expunge(SESSION(session)->sock);
 457         }
 458
 459         statusbar_pop_all();
 460         return ok;
 461 }
 462
 463 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 464                                         GSList *msglist,
 465                                         gboolean remove_source)
 466 {
 467         gchar *destdir;
 468         GSList *cur;
 469         MsgInfo *msginfo;
 470         IMAPSession *session;
 471         IMAPNameSpace *namespace;
 472         gint ok;
 473
 474         g_return_val_if_fail(folder != NULL, -1);
 475         g_return_val_if_fail(dest != NULL, -1);
 476         g_return_val_if_fail(msglist != NULL, -1);
 477
 478         session = imap_session_connect_if_not(folder);
 479         if (!session) return -1;
 480
 481         Xstrdup_a(destdir, dest->path, return -1);
 482         namespace = imap_find_namespace(IMAP_FOLDER(folder), destdir);
 483         if (namespace && namespace->separator)
 484                 imap_path_separator_subst(destdir, namespace->separator);
 485
 486         for (cur = msglist; cur != NULL; cur = cur->next) {
 487                 msginfo = (MsgInfo *)cur->data;
 488
 489                 if (msginfo->folder == dest) {
 490                         g_warning(_("the src folder is identical to the dest.\n"));
 491                         continue;
 492                 }
 493
 494                 if (remove_source)
 495                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 496                                     msginfo->folder->path, G_DIR_SEPARATOR,
 497                                     msginfo->msgnum, destdir);
 498                 else
 499                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 500                                     msginfo->folder->path, G_DIR_SEPARATOR,
 501                                     msginfo->msgnum, destdir);
 502
 503                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 504                                    destdir);
 505
 506                 if (ok == IMAP_SUCCESS && remove_source) {
 507                         imap_set_article_flags
 508                                 (session, msginfo->msgnum, msginfo->msgnum,
 509                                  IMAP_FLAG_DELETED, TRUE);
 510                 }
 511         }
 512
 513         if (remove_source)
 514                 imap_cmd_expunge(SESSION(session)->sock);
 515
 516         statusbar_pop_all();
 517         return IMAP_SUCCESS;
 518 }
 519
 520 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 521 {
 522         return imap_do_copy(folder, dest, msginfo, TRUE);
 523 }
 524
 525 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 526                               GSList *msglist)
 527 {
 528         return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 529 }
 530
 531 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 532 {
 533         return imap_do_copy(folder, dest, msginfo, FALSE);
 534 }
 535
 536 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 537                               GSList *msglist)
 538 {
 539         return imap_do_copy_msgs_with_dest(folder, dest, msglist, FALSE);
 540 }
 541
 542 gint imap_remove_msg(Folder *folder, FolderItem *item, gint num)
 543 {
 544         gint exists, recent, unseen;
 545         gulong uid;
 546         gint ok;
 547         IMAPSession *session;
 548
 549         g_return_val_if_fail(folder != NULL, -1);
 550         g_return_val_if_fail(folder->type == F_IMAP, -1);
 551         g_return_val_if_fail(item != NULL, -1);
 552         g_return_val_if_fail(num > 0 && num <= item->last_num, -1);
 553
 554         session = imap_session_connect_if_not(folder);
 555         if (!session) return -1;
 556
 557         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 558                          &exists, &recent, &unseen, &uid);
 559         statusbar_pop_all();
 560         if (ok != IMAP_SUCCESS)
 561                 return ok;
 562
 563         ok = imap_set_article_flags(IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 564                                     num, num, IMAP_FLAG_DELETED, TRUE);
 565         statusbar_pop_all();
 566         if (ok != IMAP_SUCCESS) {
 567                 log_warning(_("can't set deleted flags: %d\n"), num);
 568                 return ok;
 569         }
 570
 571         ok = imap_cmd_expunge(SESSION(session)->sock);
 572         statusbar_pop_all();
 573         if (ok != IMAP_SUCCESS) {
 574                 log_warning(_("can't expunge\n"));
 575                 return ok;
 576         }
 577
 578         return IMAP_SUCCESS;
 579 }
 580
 581 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 582 {
 583         gint exists, recent, unseen;
 584         gulong uid;
 585         gint ok;
 586         IMAPSession *session;
 587
 588         g_return_val_if_fail(folder != NULL, -1);
 589         g_return_val_if_fail(item != NULL, -1);
 590
 591         session = imap_session_connect_if_not(folder);
 592         if (!session) return -1;
 593
 594         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 595                          &exists, &recent, &unseen, &uid);
 596         statusbar_pop_all();
 597         if (ok != IMAP_SUCCESS)
 598                 return ok;
 599         if (exists == 0)
 600                 return IMAP_SUCCESS;
 601
 602         ok = imap_set_article_flags(session, 1, exists,
 603                                     IMAP_FLAG_DELETED, TRUE);
 604         statusbar_pop_all();
 605         if (ok != IMAP_SUCCESS) {
 606                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 607                 return ok;
 608         }
 609
 610         ok = imap_cmd_expunge(SESSION(session)->sock);
 611         statusbar_pop_all();
 612         if (ok != IMAP_SUCCESS) {
 613                 log_warning(_("can't expunge\n"));
 614                 return ok;
 615         }
 616
 617         return IMAP_SUCCESS;
 618 }
 619
 620 void imap_scan_folder(Folder *folder, FolderItem *item)
 621 {
 622 }
 623
 624 gint imap_create_tree(Folder *folder)
 625 {
 626         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 627         FolderItem *item;
 628         FolderItem *new_item;
 629         gchar *trash_path;
 630
 631         g_return_val_if_fail(folder != NULL, -1);
 632         g_return_val_if_fail(folder->node != NULL, -1);
 633         g_return_val_if_fail(folder->node->data != NULL, -1);
 634
 635         imap_session_connect_if_not(folder);
 636
 637         item = FOLDER_ITEM(folder->node->data);
 638
 639         new_item = folder_item_new("INBOX", "INBOX");
 640         new_item->stype = F_INBOX;
 641         folder_item_append(item, new_item);
 642         folder->inbox = new_item;
 643
 644         if (imapfolder->namespace && imapfolder->namespace->data) {
 645                 IMAPNameSpace *namespace;
 646
 647                 namespace = (IMAPNameSpace *)imapfolder->namespace->data;
 648                 if (*namespace->name == '\0')
 649                         trash_path = g_strdup("trash");
 650                 else {
 651                         gchar *name;
 652
 653                         Xstrdup_a(name, namespace->name, return -1);
 654                         strtailchomp(name, namespace->separator);
 655                         trash_path = g_strdup_printf
 656                                 ("%s%c%s",
 657                                  name, namespace->separator, "trash");
 658                 }
 659         } else
 660                 trash_path = g_strdup("trash");
 661
 662         new_item = imap_create_folder(folder, item, trash_path);
 663
 664         if (!new_item) {
 665                 new_item = folder_item_new("Trash", trash_path);
 666                 folder_item_append(item, new_item);
 667         } else {
 668                 g_free(new_item->name);
 669                 new_item->name = g_strdup("Trash");
 670         }
 671         new_item->stype = F_TRASH;
 672         folder->trash = new_item;
 673
 674         g_free(trash_path);
 675         return 0;
 676 }
 677
 678 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
 679                                const gchar *name)
 680 {
 681         gchar *dirpath, *imappath;
 682         IMAPSession *session;
 683         IMAPNameSpace *namespace;
 684         FolderItem *new_item;
 685         gchar *new_name;
 686         gint ok;
 687
 688         g_return_val_if_fail(folder != NULL, NULL);
 689         g_return_val_if_fail(parent != NULL, NULL);
 690         g_return_val_if_fail(name != NULL, NULL);
 691
 692         session = imap_session_connect_if_not(folder);
 693         if (!session) return NULL;
 694
 695         if (parent->path)
 696                 dirpath = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 697                                       NULL);
 698         else
 699                 dirpath = g_strdup(name);
 700
 701         Xstrdup_a(imappath, dirpath, {g_free(dirpath); return NULL;});
 702         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
 703         namespace = imap_find_namespace(IMAP_FOLDER(folder), imappath);
 704         if (namespace && namespace->separator) {
 705                 imap_path_separator_subst(imappath, namespace->separator);
 706                 imap_path_separator_subst(new_name, namespace->separator);
 707                 strtailchomp(dirpath, namespace->separator);
 708                 strtailchomp(new_name, namespace->separator);
 709         }
 710
 711         if (strcmp(name, "INBOX") != 0) {
 712                 ok = imap_cmd_status(SESSION(session)->sock, imappath,
 713                                      "MESSAGES");
 714                 if (ok != IMAP_SUCCESS) {
 715                         ok = imap_cmd_create(SESSION(session)->sock, imappath);
 716                         statusbar_pop_all();
 717                         if (ok != IMAP_SUCCESS) {
 718                                 log_warning(_("can't create mailbox\n"));
 719                                 g_free(dirpath);
 720                                 return NULL;
 721                         }
 722                 }
 723                 statusbar_pop_all();
 724         }
 725
 726         new_item = folder_item_new(new_name, dirpath);
 727         folder_item_append(parent, new_item);
 728         g_free(dirpath);
 729
 730         return new_item;
 731 }
 732
 733 gint imap_remove_folder(Folder *folder, FolderItem *item)
 734 {
 735         gint ok;
 736         IMAPSession *session;
 737         IMAPNameSpace *namespace;
 738         gchar *path;
 739
 740         g_return_val_if_fail(folder != NULL, -1);
 741         g_return_val_if_fail(item != NULL, -1);
 742         g_return_val_if_fail(item->path != NULL, -1);
 743
 744         session = imap_session_connect_if_not(folder);
 745         if (!session) return -1;
 746
 747         Xstrdup_a(path, item->path, return -1);
 748         namespace = imap_find_namespace(IMAP_FOLDER(folder), path);
 749         if (namespace && namespace->separator)
 750                 imap_path_separator_subst(path, namespace->separator);
 751
 752         ok = imap_cmd_delete(SESSION(session)->sock, path);
 753         statusbar_pop_all();
 754         if (ok != IMAP_SUCCESS) {
 755                 log_warning(_("can't delete mailbox\n"));
 756                 return -1;
 757         }
 758
 759         folder_item_remove(item);
 760
 761         return 0;
 762 }
 763
 764 static GSList *imap_get_uncached_messages(IMAPSession *session,
 765                                           FolderItem *item,
 766                                           gint first, gint last)
 767 {
 768         gchar buf[IMAPBUFSIZE];
 769         GSList *newlist = NULL;
 770         GSList *llast = NULL;
 771         MsgInfo *msginfo;
 772
 773         g_return_val_if_fail(session != NULL, NULL);
 774         g_return_val_if_fail(item != NULL, NULL);
 775         g_return_val_if_fail(item->folder != NULL, NULL);
 776         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
 777         g_return_val_if_fail(first <= last, NULL);
 778
 779         if (imap_cmd_envelope(SESSION(session)->sock, first, last)
 780             != IMAP_SUCCESS) {
 781                 log_warning(_("can't get envelope\n"));
 782                 return NULL;
 783         }
 784
 785         for (;;) {
 786                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 787                         log_warning(_("error occurred while getting envelope.\n"));
 788                         return newlist;
 789                 }
 790                 strretchomp(buf);
 791                 if (buf[0] != '*' || buf[1] != ' ') break;
 792
 793                 msginfo = imap_parse_envelope(SESSION(session)->sock, buf);
 794                 if (!msginfo) {
 795                         log_warning(_("can't parse envelope: %s\n"), buf);
 796                         continue;
 797                 }
 798
 799                 msginfo->folder = item;
 800
 801                 if (!newlist)
 802                         llast = newlist = g_slist_append(newlist, msginfo);
 803                 else {
 804                         llast = g_slist_append(llast, msginfo);
 805                         llast = llast->next;
 806                 }
 807         }
 808
 809         return newlist;
 810 }
 811
 812 static GSList *imap_delete_cached_messages(GSList *mlist,
 813                                            gint first, gint last)
 814 {
 815         GSList *cur, *next;
 816         MsgInfo *msginfo;
 817         gchar *cache_file;
 818
 819         for (cur = mlist; cur != NULL; ) {
 820                 next = cur->next;
 821
 822                 msginfo = (MsgInfo *)cur->data;
 823                 if (msginfo != NULL && first <= msginfo->msgnum &&
 824                     msginfo->msgnum <= last) {
 825                         debug_print(_("deleting message %d...\n"),
 826                                     msginfo->msgnum);
 827
 828                         cache_file = procmsg_get_message_file_path(msginfo);
 829                         if (is_file_exist(cache_file)) unlink(cache_file);
 830                         g_free(cache_file);
 831
 832                         procmsg_msginfo_free(msginfo);
 833                         mlist = g_slist_remove(mlist, msginfo);
 834                 }
 835
 836                 cur = next;
 837         }
 838
 839         return mlist;
 840 }
 841
 842 static void imap_delete_all_cached_messages(FolderItem *item)
 843 {
 844         gchar *dir;
 845
 846         g_return_if_fail(item != NULL);
 847         g_return_if_fail(item->folder != NULL);
 848         g_return_if_fail(item->folder->type == F_IMAP);
 849
 850         debug_print(_("\tDeleting all cached messages... "));
 851
 852         dir = folder_item_get_path(item);
 853         remove_all_numbered_files(dir);
 854         g_free(dir);
 855
 856         debug_print(_("done.\n"));
 857 }
 858
 859 static SockInfo *imap_open(const gchar *server, gushort port, gchar *buf)
 860 {
 861         SockInfo *sock;
 862
 863         if ((sock = sock_connect(server, port)) == NULL) {
 864                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
 865                             server, port);
 866                 return NULL;
 867         }
 868
 869         imap_cmd_count = 0;
 870
 871         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
 872                 sock_close(sock);
 873                 return NULL;
 874         }
 875
 876         return sock;
 877 }
 878
 879 #define THROW goto catch
 880
 881 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
 882 {
 883         gchar *ns_str;
 884         gchar *name;
 885         gchar *separator;
 886         gchar *p;
 887         IMAPNameSpace *namespace;
 888         GList *ns_list = NULL;
 889
 890         g_return_if_fail(session != NULL);
 891         g_return_if_fail(folder != NULL);
 892
 893         if (folder->namespace != NULL) return;
 894
 895         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
 896             != IMAP_SUCCESS) {
 897                 log_warning(_("can't get namespace\n"));
 898                 return;
 899         }
 900
 901         /* get the first element */
 902         extract_one_parenthesis_with_skip_quote(ns_str, '"', '(', ')');
 903         g_strstrip(ns_str);
 904         p = ns_str;
 905
 906         while (*p != '\0') {
 907                 /* parse ("#foo" "/") */
 908
 909                 while (*p && *p != '(') p++;
 910                 if (*p == '\0') THROW;
 911                 p++;
 912
 913                 while (*p && *p != '"') p++;
 914                 if (*p == '\0') THROW;
 915                 p++;
 916                 name = p;
 917
 918                 while (*p && *p != '"') p++;
 919                 if (*p == '\0') THROW;
 920                 *p = '\0';
 921                 p++;
 922
 923                 while (*p && isspace(*p)) p++;
 924                 if (*p == '\0') THROW;
 925                 if (strncmp(p, "NIL", 3) == 0)
 926                         separator = NULL;
 927                 else if (*p == '"') {
 928                         p++;
 929                         separator = p;
 930                         while (*p && *p != '"') p++;
 931                         if (*p == '\0') THROW;
 932                         *p = '\0';
 933                         p++;
 934                 } else THROW;
 935
 936                 while (*p && *p != ')') p++;
 937                 if (*p == '\0') THROW;
 938                 p++;
 939
 940                 namespace = g_new(IMAPNameSpace, 1);
 941                 namespace->name = g_strdup(name);
 942                 namespace->separator = separator ? separator[0] : '\0';
 943                 ns_list = g_list_append(ns_list, namespace);
 944                 IMAP_FOLDER(folder)->namespace = ns_list;
 945         }
 946
 947 catch:
 948         g_free(ns_str);
 949         return;
 950 }
 951
 952 #undef THROW
 953
 954 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
 955                                           const gchar *path)
 956 {
 957         IMAPNameSpace *namespace = NULL;
 958         GList *ns_list;
 959         gchar *name;
 960
 961         g_return_val_if_fail(folder != NULL, NULL);
 962         g_return_val_if_fail(path != NULL, NULL);
 963
 964         ns_list = folder->namespace;
 965
 966         for (; ns_list != NULL; ns_list = ns_list->next) {
 967                 IMAPNameSpace *tmp_ns = ns_list->data;
 968
 969                 Xstrdup_a(name, tmp_ns->name, return namespace);
 970                 if (tmp_ns->separator && tmp_ns->separator != '/')
 971                         subst_char(name, tmp_ns->separator, '/');
 972                 if (strncmp(path, name, strlen(name)) == 0)
 973                         namespace = tmp_ns;
 974         }
 975
 976         return namespace;
 977 }
 978
 979 static gchar *imap_parse_atom(SockInfo *sock, gchar *src, gchar *dest,
 980                               gchar *orig_buf)
 981 {
 982         gchar *cur_pos = src;
 983
 984         while (*cur_pos == ' ') cur_pos++;
 985
 986         if (!strncmp(cur_pos, "NIL", 3)) {
 987                 *dest = '\0';
 988                 cur_pos += 3;
 989         } else if (*cur_pos == '\"') {
 990                 gchar *p;
 991
 992                 p = strchr_cpy(cur_pos + 1, '\"', dest, IMAPBUFSIZE);
 993                 cur_pos = p ? p : cur_pos + 2;
 994         } else if (*cur_pos == '{') {
 995                 gchar buf[32];
 996                 gint len;
 997
 998                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
 999                 len = atoi(buf);
1000
1001                 g_return_val_if_fail(orig_buf != NULL, cur_pos);
1002
1003                 if (sock_gets(sock, orig_buf, IMAPBUFSIZE) < 0)
1004                         return cur_pos;
1005                 strretchomp(orig_buf);
1006                 log_print("IMAP4< %s\n", orig_buf);
1007                 memcpy(dest, orig_buf, len);
1008                 dest[len] = '\0';
1009                 cur_pos = orig_buf + len;
1010         }
1011
1012         return cur_pos;
1013 }
1014
1015 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1016                                      gchar *out_from_str,
1017                                      gchar *out_fromname_str,
1018                                      gchar *orig_buf)
1019 {
1020         gchar buf[IMAPBUFSIZE];
1021         gchar *cur_pos = start;
1022
1023         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
1024         conv_unmime_header(out_fromname_str, 256, buf, NULL);
1025
1026         if (out_fromname_str[0] != '\0') {
1027                 strcat(out_from_str, "\"");
1028                 strcat(out_from_str, out_fromname_str);
1029                 strcat(out_from_str, "\"");
1030         }
1031
1032         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
1033
1034         strcat(out_from_str, " <");
1035
1036         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
1037         strcat(out_from_str, buf);
1038
1039         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
1040         strcat(out_from_str, "@");
1041         strcat(out_from_str, buf);
1042         strcat(out_from_str, ">");
1043
1044         while (*cur_pos == ' ') cur_pos++;
1045
1046         g_return_val_if_fail(*cur_pos == ')', cur_pos + 1);
1047
1048         return cur_pos + 1;
1049 }
1050
1051 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1052                                  gchar **out_from_str,
1053                                  gchar **out_fromname_str,
1054                                  gchar *orig_buf)
1055 {
1056         gchar buf[IMAPBUFSIZE];
1057         gchar name_buf[IMAPBUFSIZE];
1058         gchar *cur_pos = start;
1059         gboolean first = TRUE;
1060
1061         if (out_from_str)     *out_from_str     = NULL;
1062         if (out_fromname_str) *out_fromname_str = NULL;
1063         buf[0] = name_buf[0] = '\0';
1064
1065         if (!strncmp(cur_pos, "NIL", 3)) {
1066                 if (out_from_str)     *out_from_str     = g_strdup("");
1067                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1068                 return cur_pos + 3;
1069         }
1070
1071         g_return_val_if_fail(*cur_pos == '(', NULL);
1072         cur_pos++;
1073
1074         for (;;) {
1075                 gchar ch = *cur_pos++;
1076                 if (ch == ')') break;
1077                 if (ch == '(') {
1078                         if (!first) strcat(buf, ", ");
1079                         first = FALSE;
1080                         cur_pos = imap_parse_one_address
1081                                 (sock, cur_pos, buf, name_buf, orig_buf);
1082                         if (!cur_pos) return NULL;
1083                 }
1084         }
1085
1086         if (out_from_str)     *out_from_str     = g_strdup(buf);
1087         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1088
1089         return cur_pos;
1090 }
1091
1092 static MsgFlags imap_parse_flags(const gchar *flag_str)
1093 {
1094         gchar buf[32];
1095         const gchar *cur_pos = flag_str;
1096         const gchar *last_pos;
1097         MsgFlags flags;
1098
1099         flags = 0;
1100         MSG_SET_FLAGS(flags, MSG_UNREAD|MSG_IMAP);
1101
1102         while (cur_pos != NULL) {
1103                 cur_pos = strchr(cur_pos, '\\');
1104                 if (cur_pos == NULL) break;
1105
1106                 last_pos = cur_pos + 1;
1107                 cur_pos = strchr_cpy(last_pos, ' ', buf, sizeof(buf));
1108                 if (cur_pos == NULL)
1109                         strncpy2(buf, last_pos, sizeof(buf));
1110
1111                 if (g_strcasecmp(buf, "Recent") == 0) {
1112                         MSG_SET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1113                 } else if (g_strcasecmp(buf, "Seen") == 0) {
1114                         MSG_UNSET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1115                 } else if (g_strcasecmp(buf, "Deleted") == 0) {
1116                         MSG_SET_FLAGS(flags, MSG_DELETED);
1117                 } else if (g_strcasecmp(buf, "Flagged") == 0) {
1118                         MSG_SET_FLAGS(flags, MSG_MARKED);
1119                 }
1120         }
1121
1122         return flags;
1123 }
1124
1125 static MsgInfo *imap_parse_envelope(SockInfo *sock, gchar *line_str)
1126 {
1127         MsgInfo *msginfo;
1128         gchar buf[IMAPBUFSIZE];
1129         gchar tmp[IMAPBUFSIZE];
1130         gchar *cur_pos;
1131         gint msgnum;
1132         size_t size;
1133         gchar *date = NULL;
1134         time_t date_t;
1135         gchar *subject = NULL;
1136         gchar *tmp_from;
1137         gchar *tmp_fromname;
1138         gchar *from = NULL;
1139         gchar *fromname = NULL;
1140         gchar *tmp_to;
1141         gchar *to = NULL;
1142         gchar *inreplyto = NULL;
1143         gchar *msgid = NULL;
1144         MsgFlags flags;
1145
1146         log_print("IMAP4< %s\n", line_str);
1147
1148         g_return_val_if_fail(line_str != NULL, NULL);
1149         g_return_val_if_fail(line_str[0] == '*' && line_str[1] == ' ', NULL);
1150
1151         cur_pos = line_str + 2;
1152
1153 #define PARSE_ONE_ELEMENT(ch) \
1154 { \
1155         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
1156         g_return_val_if_fail(cur_pos != NULL, NULL); \
1157 }
1158
1159         PARSE_ONE_ELEMENT(' ');
1160         msgnum = atoi(buf);
1161
1162         PARSE_ONE_ELEMENT(' ');
1163         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
1164
1165         PARSE_ONE_ELEMENT(' ');
1166         g_return_val_if_fail(!strcmp(buf, "(FLAGS"), NULL);
1167
1168         PARSE_ONE_ELEMENT(')');
1169         g_return_val_if_fail(*buf == '(', NULL);
1170         flags = imap_parse_flags(buf + 1);
1171
1172         g_return_val_if_fail(*cur_pos == ' ', NULL);
1173         g_return_val_if_fail
1174                 ((cur_pos = strchr_cpy(cur_pos + 1, ' ', buf, sizeof(buf))),
1175                  NULL);
1176         g_return_val_if_fail(!strcmp(buf, "RFC822.SIZE"), NULL);
1177
1178         PARSE_ONE_ELEMENT(' ');
1179         size = atoi(buf);
1180
1181         PARSE_ONE_ELEMENT(' ');
1182         g_return_val_if_fail(!strcmp(buf, "ENVELOPE"), NULL);
1183
1184         g_return_val_if_fail(*cur_pos == '(', NULL);
1185         cur_pos = imap_parse_atom(sock, cur_pos + 1, buf, line_str);
1186         Xstrdup_a(date, buf, return NULL);
1187         date_t = procheader_date_parse(NULL, date, 0);
1188
1189         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
1190         if (buf[0] != '\0') {
1191                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
1192                 Xstrdup_a(subject, tmp, return NULL);
1193         }
1194
1195         g_return_val_if_fail(*cur_pos == ' ', NULL);
1196         cur_pos = imap_parse_address(sock, cur_pos + 1,
1197                                      &tmp_from, &tmp_fromname, line_str);
1198         Xstrdup_a(from, tmp_from,
1199                   {g_free(tmp_from); g_free(tmp_fromname); return NULL;});
1200         Xstrdup_a(fromname, tmp_fromname,
1201                   {g_free(tmp_from); g_free(tmp_fromname); return NULL;});
1202         g_free(tmp_from);
1203         g_free(tmp_fromname);
1204
1205 #define SKIP_ONE_ELEMENT() \
1206 { \
1207         g_return_val_if_fail(*cur_pos == ' ', NULL); \
1208         cur_pos = imap_parse_address(sock, cur_pos + 1, \
1209                                      NULL, NULL, line_str); \
1210 }
1211
1212         /* skip sender and reply-to */
1213         SKIP_ONE_ELEMENT();
1214         SKIP_ONE_ELEMENT();
1215
1216         g_return_val_if_fail(*cur_pos == ' ', NULL);
1217         cur_pos = imap_parse_address(sock, cur_pos + 1, &tmp_to, NULL, line_str);
1218         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
1219         g_free(tmp_to);
1220
1221         /* skip Cc and Bcc */
1222         SKIP_ONE_ELEMENT();
1223         SKIP_ONE_ELEMENT();
1224
1225 #undef SKIP_ONE_ELEMENT
1226
1227         g_return_val_if_fail(*cur_pos == ' ', NULL);
1228         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
1229         if (buf[0] != '\0') {
1230                 eliminate_parenthesis(buf, '(', ')');
1231                 extract_parenthesis(buf, '<', '>');
1232                 remove_space(buf);
1233                 Xstrdup_a(inreplyto, buf, return NULL);
1234         }
1235
1236         g_return_val_if_fail(*cur_pos == ' ', NULL);
1237         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
1238         if (buf[0] != '\0') {
1239                 extract_parenthesis(buf, '<', '>');
1240                 remove_space(buf);
1241                 Xstrdup_a(msgid, buf, return NULL);
1242         }
1243
1244         msginfo = g_new0(MsgInfo, 1);
1245         msginfo->msgnum = msgnum;
1246         msginfo->size = size;
1247         msginfo->date = g_strdup(date);
1248         msginfo->date_t = date_t;
1249         msginfo->subject = g_strdup(subject);
1250         msginfo->from = g_strdup(from);
1251         msginfo->fromname = g_strdup(fromname);
1252         msginfo->to = g_strdup(to);
1253         msginfo->inreplyto = g_strdup(inreplyto);
1254         msginfo->msgid = g_strdup(msgid);
1255         msginfo->flags = flags;
1256
1257         return msginfo;
1258 }
1259
1260 static gint imap_set_article_flags(IMAPSession *session,
1261                                    gint first,
1262                                    gint last,
1263                                    IMAPFlags flags,
1264                                    gboolean is_set)
1265 {
1266         GString *buf;
1267         gint ok;
1268
1269         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
1270
1271         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
1272         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
1273         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
1274         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
1275         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
1276
1277         if (buf->str[buf->len - 1] == ' ')
1278                 g_string_truncate(buf, buf->len - 1);
1279
1280         g_string_append_c(buf, ')');
1281
1282         ok = imap_cmd_store(SESSION(session)->sock, first, last, buf->str);
1283         g_string_free(buf, TRUE);
1284
1285         return ok;
1286 }
1287
1288 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
1289                         const gchar *path,
1290                         gint *exists, gint *recent, gint *unseen, gulong *uid)
1291 {
1292         gchar *real_path;
1293         IMAPNameSpace *namespace;
1294         gint ok;
1295
1296         Xstrdup_a(real_path, path, return -1);
1297         namespace = imap_find_namespace(folder, path);
1298         if (namespace && namespace->separator)
1299                 imap_path_separator_subst(real_path, namespace->separator);
1300
1301         ok = imap_cmd_select(SESSION(session)->sock, real_path,
1302                              exists, recent, unseen, uid);
1303         if (ok != IMAP_SUCCESS)
1304                 log_warning(_("can't select folder: %s\n"), real_path);
1305
1306         return ok;
1307 }
1308
1309
1310 /* low-level IMAP4rev1 commands */
1311
1312 static gint imap_cmd_login(SockInfo *sock,
1313                            const gchar *user, const gchar *pass)
1314 {
1315         gint ok;
1316
1317         imap_cmd_gen_send(sock, "LOGIN \"%s\" %s", user, pass);
1318         ok = imap_cmd_ok(sock, NULL);
1319         if (ok != IMAP_SUCCESS)
1320                 log_warning(_("IMAP4 login failed.\n"));
1321
1322         return ok;
1323 }
1324
1325 static gint imap_cmd_logout(SockInfo *sock)
1326 {
1327         imap_cmd_gen_send(sock, "LOGOUT");
1328         return imap_cmd_ok(sock, NULL);
1329 }
1330
1331 static gint imap_cmd_noop(SockInfo *sock)
1332 {
1333         imap_cmd_gen_send(sock, "NOOP");
1334         return imap_cmd_ok(sock, NULL);
1335 }
1336
1337 #define THROW(err) { ok = err; goto catch; }
1338
1339 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
1340 {
1341         gint ok;
1342         GPtrArray *argbuf;
1343         gchar *str;
1344
1345         argbuf = g_ptr_array_new();
1346
1347         imap_cmd_gen_send(sock, "NAMESPACE");
1348         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
1349
1350         str = search_array_contain_str(argbuf, "NAMESPACE");
1351         if (!str) THROW(IMAP_ERROR);
1352
1353         *ns_str = g_strdup(str);
1354
1355 catch:
1356         ptr_array_free_strings(argbuf);
1357         g_ptr_array_free(argbuf, TRUE);
1358
1359         return ok;
1360 }
1361
1362 #undef THROW
1363
1364 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
1365                             gint *exists, gint *recent, gint *unseen,
1366                             gulong *uid)
1367 {
1368         gint ok;
1369         gchar *resp_str;
1370         GPtrArray *argbuf;
1371
1372         *exists = *recent = *unseen = *uid = 0;
1373         argbuf = g_ptr_array_new();
1374
1375         imap_cmd_gen_send(sock, "SELECT \"%s\"", folder);
1376         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS)
1377                 goto bail;
1378
1379         resp_str = search_array_contain_str(argbuf, "EXISTS");
1380         if (resp_str) {
1381                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
1382                         g_warning("imap_select(): invalid EXISTS line.\n");
1383                         goto bail;
1384                 }
1385         }
1386
1387         resp_str = search_array_contain_str(argbuf, "RECENT");
1388         if (resp_str) {
1389                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
1390                         g_warning("imap_select(): invalid RECENT line.\n");
1391                         goto bail;
1392                 }
1393         }
1394
1395         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
1396         if (resp_str) {
1397                 if (sscanf(resp_str, "OK [UIDVALIDITY %lu] ", uid) != 1) {
1398                         g_warning("imap_select(): invalid UIDVALIDITY line.\n");
1399                         goto bail;
1400                 }
1401         }
1402
1403         resp_str = search_array_contain_str(argbuf, "UNSEEN");
1404         if (resp_str) {
1405                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
1406                         g_warning("imap_select(): invalid UNSEEN line.\n");
1407                         goto bail;
1408                 }
1409         }
1410
1411 bail:
1412         ptr_array_free_strings(argbuf);
1413         g_ptr_array_free(argbuf, TRUE);
1414
1415         return ok;
1416 }
1417
1418 static gint imap_cmd_status(SockInfo *sock, const gchar *folder,
1419                             const gchar *status)
1420 {
1421         imap_cmd_gen_send(sock, "STATUS \"%s\" (%s)", folder, status);
1422         return imap_cmd_ok(sock, NULL);
1423 }
1424
1425 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
1426 {
1427         imap_cmd_gen_send(sock, "CREATE \"%s\"", folder);
1428         return imap_cmd_ok(sock, NULL);
1429 }
1430
1431 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
1432 {
1433         imap_cmd_gen_send(sock, "DELETE \"%s\"", folder);
1434         return imap_cmd_ok(sock, NULL);
1435 }
1436
1437 static gint imap_cmd_fetch(SockInfo *sock, gint num, const gchar *filename)
1438 {
1439         gint ok;
1440         gchar buf[IMAPBUFSIZE];
1441         gchar *cur_pos;
1442         gchar size_str[32];
1443         glong size_num;
1444
1445         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
1446
1447         imap_cmd_gen_send(sock, "FETCH %d BODY[]", num);
1448
1449         if (sock_gets(sock, buf, sizeof(buf)) < 0)
1450                 return IMAP_ERROR;
1451         strretchomp(buf);
1452         if (buf[0] != '*' || buf[1] != ' ')
1453                 return IMAP_ERROR;
1454         log_print("IMAP4< %s\n", buf);
1455
1456         cur_pos = strchr(buf, '{');
1457         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1458         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
1459         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1460         size_num = atol(size_str);
1461
1462         if (*cur_pos != '\0') return IMAP_ERROR;
1463
1464         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
1465                 return IMAP_ERROR;
1466
1467         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
1468                 return IMAP_ERROR;
1469
1470         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
1471                 return IMAP_ERROR;
1472
1473         ok = imap_cmd_ok(sock, NULL);
1474
1475         return ok;
1476 }
1477
1478 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
1479                             const gchar *file)
1480 {
1481         gint ok;
1482         gint size;
1483
1484         g_return_val_if_fail(file != NULL, IMAP_ERROR);
1485
1486         size = get_file_size(file);
1487         imap_cmd_gen_send(sock, "APPEND %s {%d}", destfolder, size);
1488         ok = imap_cmd_ok(sock, NULL);
1489         if (ok != IMAP_SUCCESS) {
1490                 log_warning(_("can't append %s to %s\n"), file, destfolder);
1491                 return -1;
1492         }
1493
1494         return ok;
1495 }
1496
1497 static gint imap_cmd_copy(SockInfo *sock, gint num, const gchar *destfolder)
1498 {
1499         gint ok;
1500
1501         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
1502
1503         imap_cmd_gen_send(sock, "COPY %d %s", num, destfolder);
1504         ok = imap_cmd_ok(sock, NULL);
1505         if (ok != IMAP_SUCCESS) {
1506                 log_warning(_("can't copy %d to %s\n"), num, destfolder);
1507                 return -1;
1508         }
1509
1510         return ok;
1511 }
1512
1513
1514 gint imap_cmd_envelope(SockInfo *sock, gint first, gint last)
1515 {
1516         imap_cmd_gen_send(sock, "FETCH %d:%d (FLAGS RFC822.SIZE ENVELOPE)",
1517                           first, last);
1518
1519         return IMAP_SUCCESS;
1520 }
1521
1522 static gint imap_cmd_store(SockInfo *sock, gint first, gint last,
1523                            gchar *sub_cmd)
1524 {
1525         gint ok;
1526
1527         imap_cmd_gen_send(sock, "STORE %d:%d %s", first, last, sub_cmd);
1528
1529         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1530                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
1531                             first, last, sub_cmd);
1532                 return ok;
1533         }
1534
1535         return IMAP_SUCCESS;
1536 }
1537
1538 static gint imap_cmd_expunge(SockInfo *sock)
1539 {
1540         gint ok;
1541
1542         imap_cmd_gen_send(sock, "EXPUNGE");
1543         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1544                 log_warning(_("error while imap command: EXPUNGE\n"));
1545                 return ok;
1546         }
1547
1548         return IMAP_SUCCESS;
1549 }
1550
1551 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
1552 {
1553         gint ok;
1554         gchar buf[IMAPBUFSIZE];
1555         gint cmd_num;
1556         gchar cmd_status[IMAPBUFSIZE];
1557
1558         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
1559                == IMAP_SUCCESS) {
1560                 if (buf[0] == '*' && buf[1] == ' ') {
1561                         if (argbuf)
1562                                 g_ptr_array_add(argbuf, g_strdup(&buf[2]));
1563                         continue;
1564                 }
1565
1566                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
1567                         return IMAP_ERROR;
1568                 else if (cmd_num == imap_cmd_count &&
1569                          !strcmp(cmd_status, "OK")) {
1570                         if (argbuf)
1571                                 g_ptr_array_add(argbuf, g_strdup(buf));
1572                         return IMAP_SUCCESS;
1573                 } else
1574                         return IMAP_ERROR;
1575         }
1576
1577         return ok;
1578 }
1579
1580 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
1581 {
1582         gchar buf[IMAPBUFSIZE];
1583         gchar tmp[IMAPBUFSIZE];
1584         gchar *p;
1585         va_list args;
1586
1587         va_start(args, format);
1588         g_vsnprintf(tmp, sizeof(tmp), format, args);
1589         va_end(args);
1590
1591         imap_cmd_count++;
1592
1593         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
1594         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
1595                 *(p + 1) = '\0';
1596                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
1597         } else
1598                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
1599
1600         sock_write(sock, buf, strlen(buf));
1601 }
1602
1603 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
1604 {
1605         if (sock_gets(sock, buf, size) == -1)
1606                 return IMAP_SOCKET;
1607
1608         strretchomp(buf);
1609
1610         log_print("IMAP4< %s\n", buf);
1611
1612         return IMAP_SUCCESS;
1613 }
1614
1615
1616 /* misc utility functions */
1617
1618 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
1619 {
1620         gchar *tmp;
1621
1622         dest[0] = '\0';
1623         tmp = strchr(src, ch);
1624         if (!tmp || tmp == src)
1625                 return NULL;
1626
1627         memcpy(dest, src, MIN(tmp - src, len - 1));
1628         dest[MIN(tmp - src, len - 1)] = '\0';
1629
1630         return tmp + 1;
1631 }
1632
1633 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
1634 {
1635         gint i;
1636
1637         for (i = 0; i < array->len; i++) {
1638                 gchar *tmp;
1639
1640                 tmp = g_ptr_array_index(array, i);
1641                 if (strstr(tmp, str) != NULL)
1642                         return tmp;
1643         }
1644
1645         return NULL;
1646 }
1647
1648 static void imap_path_separator_subst(gchar *str, gchar separator)
1649 {
1650         if (separator && separator != '/')
1651                 subst_char(str, '/', separator);
1652 }