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 #include "inputdialog.h"
  44
  45 #define IMAP4_PORT      143
  46
  47 static GList *session_list = NULL;
  48
  49 static gint imap_cmd_count = 0;
  50
  51 static IMAPSession *imap_session_get    (Folder         *folder);
  52 static gchar *imap_query_password       (const gchar    *server,
  53                                          const gchar    *user);
  54
  55 static void imap_scan_tree_recursive    (IMAPSession    *session,
  56                                          FolderItem     *item,
  57                                          IMAPNameSpace  *namespace);
  58 static GSList *imap_parse_list          (IMAPSession    *session,
  59                                          const gchar    *path);
  60 static gint imap_create_trash           (Folder         *folder);
  61
  62 static gint imap_do_copy                (Folder         *folder,
  63                                          FolderItem     *dest,
  64                                          MsgInfo        *msginfo,
  65                                          gboolean        remove_source);
  66 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  67                                          FolderItem     *dest,
  68                                          GSList         *msglist,
  69                                          gboolean        remove_source);
  70
  71 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
  72                                                  FolderItem     *item,
  73                                                  guint32         first_uid,
  74                                                  guint32         last_uid);
  75 static GSList *imap_delete_cached_messages      (GSList         *mlist,
  76                                                  FolderItem     *item,
  77                                                  guint32         first_uid,
  78                                                  guint32         last_uid);
  79 static void imap_delete_all_cached_messages     (FolderItem     *item);
  80
  81 static SockInfo *imap_open              (const gchar    *server,
  82                                          gushort         port,
  83                                          gchar          *buf);
  84
  85 static gint imap_set_message_flags      (IMAPSession    *session,
  86                                          guint32         first_uid,
  87                                          guint32         last_uid,
  88                                          IMAPFlags       flag,
  89                                          gboolean        is_set);
  90 static gint imap_select                 (IMAPSession    *session,
  91                                          IMAPFolder     *folder,
  92                                          const gchar    *path,
  93                                          gint           *exists,
  94                                          gint           *recent,
  95                                          gint           *unseen,
  96                                          guint32        *uid_validity);
  97 static gint imap_get_uid                (IMAPSession    *session,
  98                                          gint            msgnum,
  99                                          guint32        *uid);
 100 static gint imap_status                 (IMAPSession    *session,
 101                                          IMAPFolder     *folder,
 102                                          const gchar    *path,
 103                                          gint           *messages,
 104                                          gint           *recent,
 105                                          gint           *unseen,
 106                                          guint32        *uid_validity);
 107
 108 static void imap_parse_namespace                (IMAPSession    *session,
 109                                                  IMAPFolder     *folder);
 110 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 111                                                  const gchar    *path);
 112 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 113                                                  const gchar    *path);
 114
 115 static gchar *imap_parse_atom           (SockInfo       *sock,
 116                                          gchar          *src,
 117                                          gchar          *dest,
 118                                          gint            dest_len,
 119                                          GString        *str);
 120 static gchar *imap_parse_one_address    (SockInfo       *sock,
 121                                          gchar          *start,
 122                                          gchar          *out_from_str,
 123                                          gchar          *out_fromname_str,
 124                                          GString        *str);
 125 static gchar *imap_parse_address        (SockInfo       *sock,
 126                                          gchar          *start,
 127                                          gchar         **out_from_str,
 128                                          gchar         **out_fromname_str,
 129                                          GString        *str);
 130 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 131 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 132                                          GString        *line_str);
 133
 134 /* low-level IMAP4rev1 commands */
 135 static gint imap_cmd_login      (SockInfo       *sock,
 136                                  const gchar    *user,
 137                                  const gchar    *pass);
 138 static gint imap_cmd_logout     (SockInfo       *sock);
 139 static gint imap_cmd_noop       (SockInfo       *sock);
 140 static gint imap_cmd_namespace  (SockInfo       *sock,
 141                                  gchar         **ns_str);
 142 static gint imap_cmd_list       (SockInfo       *sock,
 143                                  const gchar    *ref,
 144                                  const gchar    *mailbox,
 145                                  GPtrArray      *argbuf);
 146 static gint imap_cmd_select     (SockInfo       *sock,
 147                                  const gchar    *folder,
 148                                  gint           *exists,
 149                                  gint           *recent,
 150                                  gint           *unseen,
 151                                  guint32        *uid_validity);
 152 static gint imap_cmd_create     (SockInfo       *sock,
 153                                  const gchar    *folder);
 154 static gint imap_cmd_delete     (SockInfo       *sock,
 155                                  const gchar    *folder);
 156 static gint imap_cmd_envelope   (SockInfo       *sock,
 157                                  guint32         first_uid,
 158                                  guint32         last_uid);
 159 #if 0
 160 static gint imap_cmd_search     (SockInfo       *sock,
 161                                  GSList         *numlist);
 162 #endif
 163 static gint imap_cmd_fetch      (SockInfo       *sock,
 164                                  guint32         uid,
 165                                  const gchar    *filename);
 166 static gint imap_cmd_append     (SockInfo       *sock,
 167                                  const gchar    *destfolder,
 168                                  const gchar    *file);
 169 static gint imap_cmd_copy       (SockInfo       *sock,
 170                                  guint32         uid,
 171                                  const gchar    *destfolder);
 172 static gint imap_cmd_store      (SockInfo       *sock,
 173                                  guint32         first_uid,
 174                                  guint32         last_uid,
 175                                  gchar          *sub_cmd);
 176 static gint imap_cmd_expunge    (SockInfo       *sock);
 177
 178 static gint imap_cmd_ok         (SockInfo       *sock,
 179                                  GPtrArray      *argbuf);
 180 static void imap_cmd_gen_send   (SockInfo       *sock,
 181                                  const gchar    *format, ...);
 182 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 183                                  gchar          *buf,
 184                                  gint            size);
 185
 186 /* misc utility functions */
 187 static gchar *strchr_cpy                        (const gchar    *src,
 188                                                  gchar           ch,
 189                                                  gchar          *dest,
 190                                                  gint            len);
 191 static gchar *search_array_contain_str          (GPtrArray      *array,
 192                                                  gchar          *str);
 193 static void imap_path_separator_subst           (gchar          *str,
 194                                                  gchar           separator);
 195
 196 static IMAPSession *imap_session_get(Folder *folder)
 197 {
 198         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 199         gushort port;
 200
 201         g_return_val_if_fail(folder != NULL, NULL);
 202         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 203         g_return_val_if_fail(folder->account != NULL, NULL);
 204
 205         port = folder->account->set_imapport ? folder->account->imapport
 206                 : IMAP4_PORT;
 207
 208         if (!rfolder->session) {
 209                 rfolder->session =
 210                         imap_session_new(folder->account->recv_server, port,
 211                                          folder->account->userid,
 212                                          folder->account->passwd);
 213                 if (rfolder->session)
 214                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 215                                              IMAP_FOLDER(folder));
 216                 statusbar_pop_all();
 217                 return IMAP_SESSION(rfolder->session);
 218         }
 219
 220         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 221                 log_warning(_("IMAP4 connection to %s:%d has been"
 222                               " disconnected. Reconnecting...\n"),
 223                             folder->account->recv_server, port);
 224                 session_destroy(rfolder->session);
 225                 rfolder->session =
 226                         imap_session_new(folder->account->recv_server, port,
 227                                          folder->account->userid,
 228                                          folder->account->passwd);
 229                 if (rfolder->session)
 230                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 231                                              IMAP_FOLDER(folder));
 232         }
 233
 234         statusbar_pop_all();
 235         return IMAP_SESSION(rfolder->session);
 236 }
 237
 238 static gchar *imap_query_password(const gchar *server, const gchar *user)
 239 {
 240         gchar *message;
 241         gchar *pass;
 242
 243         message = g_strdup_printf(_("Input password for %s on %s:"),
 244                                   user, server);
 245         pass = input_dialog_with_invisible(_("Input password"), message, NULL);
 246         g_free(message);
 247
 248         return pass;
 249 }
 250
 251 Session *imap_session_new(const gchar *server, gushort port,
 252                           const gchar *user, const gchar *pass)
 253 {
 254         gchar buf[IMAPBUFSIZE];
 255         IMAPSession *session;
 256         SockInfo *imap_sock;
 257
 258         g_return_val_if_fail(server != NULL, NULL);
 259         g_return_val_if_fail(user != NULL, NULL);
 260
 261         if (!pass) {
 262                 gchar *tmp_pass;
 263                 tmp_pass = imap_query_password(server, user);
 264                 if (!tmp_pass)
 265                         return NULL;
 266                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 267                 g_free(tmp_pass);
 268         }
 269
 270         log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 271                     server, port);
 272
 273         if ((imap_sock = imap_open(server, port, buf)) == NULL)
 274                 return NULL;
 275         if (imap_cmd_login(imap_sock, user, pass) != IMAP_SUCCESS) {
 276                 imap_cmd_logout(imap_sock);
 277                 sock_close(imap_sock);
 278                 return NULL;
 279         }
 280
 281         session = g_new(IMAPSession, 1);
 282         SESSION(session)->type      = SESSION_IMAP;
 283         SESSION(session)->server    = g_strdup(server);
 284         SESSION(session)->sock      = imap_sock;
 285         SESSION(session)->connected = TRUE;
 286         SESSION(session)->phase     = SESSION_READY;
 287         SESSION(session)->data      = NULL;
 288         session->mbox = NULL;
 289
 290         session_list = g_list_append(session_list, session);
 291
 292         return SESSION(session);
 293 }
 294
 295 void imap_session_destroy(IMAPSession *session)
 296 {
 297         sock_close(SESSION(session)->sock);
 298         SESSION(session)->sock = NULL;
 299
 300         g_free(session->mbox);
 301
 302         session_list = g_list_remove(session_list, session);
 303 }
 304
 305 void imap_session_destroy_all(void)
 306 {
 307         while (session_list != NULL) {
 308                 IMAPSession *session = (IMAPSession *)session_list->data;
 309
 310                 imap_cmd_logout(SESSION(session)->sock);
 311                 imap_session_destroy(session);
 312         }
 313 }
 314
 315 #define THROW goto catch
 316
 317 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 318 {
 319         GSList *mlist = NULL;
 320         IMAPSession *session;
 321         gint ok, exists = 0, recent = 0, unseen = 0;
 322         guint32 uid_validity = 0;
 323         guint32 first_uid = 0, last_uid = 0, begin;
 324
 325         g_return_val_if_fail(folder != NULL, NULL);
 326         g_return_val_if_fail(item != NULL, NULL);
 327         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 328         g_return_val_if_fail(folder->account != NULL, NULL);
 329
 330         session = imap_session_get(folder);
 331
 332         if (!session) {
 333                 mlist = procmsg_read_cache(item, FALSE);
 334                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 335                 procmsg_set_flags(mlist, item);
 336                 statusbar_pop_all();
 337                 return mlist;
 338         }
 339
 340         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 341                          &exists, &recent, &unseen, &uid_validity);
 342         if (ok != IMAP_SUCCESS) THROW;
 343         if (exists > 0) {
 344                 ok = imap_get_uid(session, 1, &first_uid);
 345                 if (ok != IMAP_SUCCESS) THROW;
 346                 if (1 != exists) {
 347                         ok = imap_get_uid(session, exists, &last_uid);
 348                         if (ok != IMAP_SUCCESS) THROW;
 349                 } else
 350                         last_uid = first_uid;
 351         } else {
 352                 imap_delete_all_cached_messages(item);
 353                 statusbar_pop_all();
 354                 return NULL;
 355         }
 356
 357         if (use_cache) {
 358                 guint32 cache_last;
 359
 360                 mlist = procmsg_read_cache(item, FALSE);
 361                 procmsg_set_flags(mlist, item);
 362                 cache_last = procmsg_get_last_num_in_cache(mlist);
 363
 364                 /* calculating the range of envelope to get */
 365                 if (item->mtime != uid_validity) {
 366                         /* mailbox is changed (get all) */
 367                         begin = first_uid;
 368                 } else if (last_uid < cache_last) {
 369                         /* mailbox is changed (get all) */
 370                         begin = first_uid;
 371                 } else if (last_uid == cache_last) {
 372                         /* mailbox unchanged (get none)*/
 373                         begin = 0;
 374                 } else {
 375                         begin = cache_last + 1;
 376                 }
 377
 378                 item->mtime = uid_validity;
 379
 380                 if (first_uid > 0 && last_uid > 0) {
 381                         mlist = imap_delete_cached_messages(mlist, item,
 382                                                             0, first_uid - 1);
 383                         mlist = imap_delete_cached_messages(mlist, item,
 384                                                             last_uid + 1,
 385                                                             UINT_MAX);
 386                 }
 387                 if (begin > 0)
 388                         mlist = imap_delete_cached_messages(mlist, item,
 389                                                             begin, UINT_MAX);
 390         } else {
 391                 imap_delete_all_cached_messages(item);
 392                 begin = first_uid;
 393         }
 394
 395         if (begin > 0 && begin <= last_uid) {
 396                 GSList *newlist;
 397                 newlist = imap_get_uncached_messages(session, item,
 398                                                      begin, last_uid);
 399                 mlist = g_slist_concat(mlist, newlist);
 400         }
 401
 402         item->last_num = last_uid;
 403
 404 catch:
 405         statusbar_pop_all();
 406         return mlist;
 407 }
 408
 409 #undef THROW
 410
 411 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 412 {
 413         gchar *path, *filename;
 414         IMAPSession *session;
 415         gint ok;
 416
 417         g_return_val_if_fail(folder != NULL, NULL);
 418         g_return_val_if_fail(item != NULL, NULL);
 419
 420         path = folder_item_get_path(item);
 421         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 422         g_free(path);
 423
 424         if (is_file_exist(filename)) {
 425                 debug_print(_("message %d has been already cached.\n"), uid);
 426                 return filename;
 427         }
 428
 429         session = imap_session_get(folder);
 430         if (!session) {
 431                 g_free(filename);
 432                 return NULL;
 433         }
 434
 435         debug_print(_("getting message %d...\n"), uid);
 436         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 437
 438         statusbar_pop_all();
 439
 440         if (ok != IMAP_SUCCESS) {
 441                 g_warning(_("can't fetch message %d\n"), uid);
 442                 g_free(filename);
 443                 return NULL;
 444         }
 445
 446         return filename;
 447 }
 448
 449 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 450                   gboolean remove_source)
 451 {
 452         IMAPSession *session;
 453         gint ok;
 454
 455         g_return_val_if_fail(folder != NULL, -1);
 456         g_return_val_if_fail(dest != NULL, -1);
 457         g_return_val_if_fail(file != NULL, -1);
 458
 459         session = imap_session_get(folder);
 460         if (!session)
 461                 return -1;
 462
 463         ok = imap_cmd_append(SESSION(session)->sock, dest->path, file);
 464         if (ok != IMAP_SUCCESS) {
 465                 g_warning(_("can't append message %s\n"), file);
 466                 return -1;
 467         }
 468
 469         if (remove_source) {
 470                 if (unlink(file) < 0)
 471                         FILE_OP_ERROR(file, "unlink");
 472         }
 473
 474         return dest->last_num;
 475 }
 476
 477 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 478                          gboolean remove_source)
 479 {
 480         gchar *destdir;
 481         IMAPSession *session;
 482         gint ok;
 483
 484         g_return_val_if_fail(folder != NULL, -1);
 485         g_return_val_if_fail(folder->type == F_IMAP, -1);
 486         g_return_val_if_fail(dest != NULL, -1);
 487         g_return_val_if_fail(msginfo != NULL, -1);
 488
 489         session = imap_session_get(folder);
 490         if (!session) return -1;
 491
 492         if (msginfo->folder == dest) {
 493                 g_warning(_("the src folder is identical to the dest.\n"));
 494                 return -1;
 495         }
 496
 497         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 498
 499         if (remove_source)
 500                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 501                             msginfo->folder->path, G_DIR_SEPARATOR,
 502                             msginfo->msgnum, destdir);
 503         else
 504                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 505                             msginfo->folder->path, G_DIR_SEPARATOR,
 506                             msginfo->msgnum, destdir);
 507
 508         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 509
 510         if (ok == IMAP_SUCCESS && remove_source) {
 511                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 512                                        IMAP_FLAG_DELETED, TRUE);
 513                 ok = imap_cmd_expunge(SESSION(session)->sock);
 514         }
 515
 516         g_free(destdir);
 517         statusbar_pop_all();
 518
 519         return ok;
 520 }
 521
 522 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 523                                         GSList *msglist,
 524                                         gboolean remove_source)
 525 {
 526         gchar *destdir;
 527         GSList *cur;
 528         MsgInfo *msginfo;
 529         IMAPSession *session;
 530         gint ok;
 531
 532         g_return_val_if_fail(folder != NULL, -1);
 533         g_return_val_if_fail(dest != NULL, -1);
 534         g_return_val_if_fail(msglist != NULL, -1);
 535
 536         session = imap_session_get(folder);
 537         if (!session) return -1;
 538
 539         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 540
 541         for (cur = msglist; cur != NULL; cur = cur->next) {
 542                 msginfo = (MsgInfo *)cur->data;
 543
 544                 if (msginfo->folder == dest) {
 545                         g_warning(_("the src folder is identical to the dest.\n"));
 546                         continue;
 547                 }
 548
 549                 if (remove_source)
 550                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 551                                     msginfo->folder->path, G_DIR_SEPARATOR,
 552                                     msginfo->msgnum, destdir);
 553                 else
 554                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 555                                     msginfo->folder->path, G_DIR_SEPARATOR,
 556                                     msginfo->msgnum, destdir);
 557
 558                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 559                                    destdir);
 560
 561                 if (ok == IMAP_SUCCESS && remove_source) {
 562                         imap_set_message_flags
 563                                 (session, msginfo->msgnum, msginfo->msgnum,
 564                                  IMAP_FLAG_DELETED, TRUE);
 565                 }
 566         }
 567
 568         if (remove_source)
 569                 ok = imap_cmd_expunge(SESSION(session)->sock);
 570
 571         g_free(destdir);
 572         statusbar_pop_all();
 573
 574         return IMAP_SUCCESS;
 575 }
 576
 577 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 578 {
 579         return imap_do_copy(folder, dest, msginfo, TRUE);
 580 }
 581
 582 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 583                               GSList *msglist)
 584 {
 585         return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 586 }
 587
 588 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 589 {
 590         return imap_do_copy(folder, dest, msginfo, FALSE);
 591 }
 592
 593 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 594                               GSList *msglist)
 595 {
 596         return imap_do_copy_msgs_with_dest(folder, dest, msglist, FALSE);
 597 }
 598
 599 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 600 {
 601         gint exists, recent, unseen;
 602         guint32 uid_validity;
 603         gint ok;
 604         IMAPSession *session;
 605
 606         g_return_val_if_fail(folder != NULL, -1);
 607         g_return_val_if_fail(folder->type == F_IMAP, -1);
 608         g_return_val_if_fail(item != NULL, -1);
 609
 610         session = imap_session_get(folder);
 611         if (!session) return -1;
 612
 613         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 614                          &exists, &recent, &unseen, &uid_validity);
 615         statusbar_pop_all();
 616         if (ok != IMAP_SUCCESS)
 617                 return ok;
 618
 619         ok = imap_set_message_flags
 620                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 621                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 622         statusbar_pop_all();
 623         if (ok != IMAP_SUCCESS) {
 624                 log_warning(_("can't set deleted flags: %d\n"), uid);
 625                 return ok;
 626         }
 627
 628         ok = imap_cmd_expunge(SESSION(session)->sock);
 629         statusbar_pop_all();
 630         if (ok != IMAP_SUCCESS) {
 631                 log_warning(_("can't expunge\n"));
 632                 return ok;
 633         }
 634
 635         return IMAP_SUCCESS;
 636 }
 637
 638 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 639 {
 640         gint exists, recent, unseen;
 641         guint32 uid_validity;
 642         gint ok;
 643         IMAPSession *session;
 644
 645         g_return_val_if_fail(folder != NULL, -1);
 646         g_return_val_if_fail(item != NULL, -1);
 647
 648         session = imap_session_get(folder);
 649         if (!session) return -1;
 650
 651         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 652                          &exists, &recent, &unseen, &uid_validity);
 653         statusbar_pop_all();
 654         if (ok != IMAP_SUCCESS)
 655                 return ok;
 656         if (exists == 0)
 657                 return IMAP_SUCCESS;
 658
 659         imap_cmd_gen_send(SESSION(session)->sock,
 660                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 661         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 662         statusbar_pop_all();
 663         if (ok != IMAP_SUCCESS) {
 664                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 665                 return ok;
 666         }
 667
 668         ok = imap_cmd_expunge(SESSION(session)->sock);
 669         statusbar_pop_all();
 670         if (ok != IMAP_SUCCESS) {
 671                 log_warning(_("can't expunge\n"));
 672                 return ok;
 673         }
 674
 675         return IMAP_SUCCESS;
 676 }
 677
 678 void imap_scan_folder(Folder *folder, FolderItem *item)
 679 {
 680         IMAPSession *session;
 681         gint messages, recent, unseen;
 682         guint32 uid_validity;
 683         gint ok;
 684
 685         g_return_if_fail(folder != NULL);
 686         g_return_if_fail(item != NULL);
 687
 688         session = imap_session_get(folder);
 689         if (!session) return;
 690
 691         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
 692                          &messages, &recent, &unseen, &uid_validity);
 693         statusbar_pop_all();
 694         if (ok != IMAP_SUCCESS) return;
 695
 696         item->new = recent;
 697         item->unread = unseen;
 698         item->total = messages;
 699         /* item->mtime = uid_validity; */
 700 }
 701
 702 void imap_scan_tree(Folder *folder)
 703 {
 704         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 705         FolderItem *item, *inbox;
 706         IMAPSession *session;
 707         IMAPNameSpace *namespace = NULL;
 708         gchar *root_folder = NULL;
 709
 710         g_return_if_fail(folder != NULL);
 711         g_return_if_fail(folder->account != NULL);
 712
 713         session = imap_session_get(folder);
 714         if (!session) return;
 715
 716         if (imapfolder->namespace && imapfolder->namespace->data)
 717                 namespace = (IMAPNameSpace *)imapfolder->namespace->data;
 718
 719         if (folder->account->imap_dir && *folder->account->imap_dir) {
 720                 gchar *imap_dir;
 721                 Xstrdup_a(imap_dir, folder->account->imap_dir, return);
 722                 strtailchomp(imap_dir, '/');
 723                 root_folder = g_strconcat
 724                         (namespace && namespace->name ? namespace->name : "",
 725                          imap_dir, NULL);
 726                 if (namespace && namespace->separator)
 727                         subst_char(root_folder, namespace->separator, '/');
 728         }
 729
 730         if (root_folder)
 731                 debug_print("IMAP root directory: %s\n", root_folder);
 732
 733         folder_tree_destroy(folder);
 734         item = folder_item_new(folder->name, root_folder);
 735         item->folder = folder;
 736         folder->node = g_node_new(item);
 737         g_free(root_folder);
 738
 739         imap_scan_tree_recursive(session, item, namespace);
 740
 741         if (!folder->inbox) {
 742                 inbox = folder_item_new("INBOX", "INBOX");
 743                 inbox->stype = F_INBOX;
 744                 folder_item_append(item, inbox);
 745                 folder->inbox = inbox;
 746         }
 747         if (!folder->trash)
 748                 imap_create_trash(folder);
 749 }
 750
 751 static void imap_scan_tree_recursive(IMAPSession *session,
 752                                      FolderItem *item,
 753                                      IMAPNameSpace *namespace)
 754 {
 755         IMAPFolder *imapfolder;
 756         FolderItem *new_item;
 757         GSList *item_list, *cur;
 758         gchar *real_path;
 759
 760         g_return_if_fail(item != NULL);
 761         g_return_if_fail(item->folder != NULL);
 762         g_return_if_fail(item->no_sub == FALSE);
 763
 764         imapfolder = IMAP_FOLDER(item->folder);
 765
 766         if (item->folder->ui_func)
 767                 item->folder->ui_func(item->folder, item,
 768                                       item->folder->ui_func_data);
 769
 770         if (item->path) {
 771                 real_path = imap_get_real_path(imapfolder, item->path);
 772                 imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s%c%%",
 773                                   real_path,
 774                                   namespace && namespace->separator
 775                                   ? namespace->separator : '/');
 776         } else {
 777                 real_path = g_strdup(namespace && namespace->name
 778                                      ? namespace->name : "");
 779                 imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s%%",
 780                                   real_path);
 781         }
 782
 783         strtailchomp(real_path, namespace && namespace->separator
 784                      ? namespace->separator : '/');
 785
 786         item_list = imap_parse_list(session, real_path);
 787         for (cur = item_list; cur != NULL; cur = cur->next) {
 788                 new_item = cur->data;
 789                 if (!strcmp(new_item->path, "INBOX")) {
 790                         if (!item->folder->inbox) {
 791                                 new_item->stype = F_INBOX;
 792                                 item->folder->inbox = new_item;
 793                         } else {
 794                                 folder_item_destroy(new_item);
 795                                 continue;
 796                         }
 797                 } else if (!item->parent && !item->folder->trash) {
 798                         if (!strcasecmp(g_basename(new_item->path), "Trash")) {
 799                                 new_item->stype = F_TRASH;
 800                                 item->folder->trash = new_item;
 801                         }
 802                 }
 803                 folder_item_append(item, new_item);
 804                 if (new_item->no_select == FALSE)
 805                         imap_scan_folder(new_item->folder, new_item);
 806                 if (new_item->no_sub == FALSE)
 807                         imap_scan_tree_recursive(session, new_item, namespace);
 808         }
 809 }
 810
 811 static GSList *imap_parse_list(IMAPSession *session, const gchar *path)
 812 {
 813         gchar buf[IMAPBUFSIZE];
 814         gchar flags[256];
 815         gchar separator[16];
 816         gchar *p;
 817         gchar *name;
 818         GSList *item_list = NULL;
 819         GString *str;
 820         FolderItem *new_item;
 821
 822         debug_print("getting list of %s ...\n", *path ? path : "\"\"");
 823
 824         str = g_string_new(NULL);
 825
 826         for (;;) {
 827                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
 828                         log_warning(_("error occured while getting LIST.\n"));
 829                         break;
 830                 }
 831                 strretchomp(buf);
 832                 if (buf[0] != '*' || buf[1] != ' ') {
 833                         log_print("IMAP4< %s\n", buf);
 834                         break;
 835                 }
 836                 debug_print("IMAP4< %s\n", buf);
 837
 838                 g_string_assign(str, buf);
 839                 p = str->str + 2;
 840                 if (strncmp(p, "LIST ", 5) != 0) continue;
 841                 p += 5;
 842
 843                 if (*p != '(') continue;
 844                 p++;
 845                 p = strchr_cpy(p, ')', flags, sizeof(flags));
 846                 if (!p) continue;
 847                 while (*p == ' ') p++;
 848
 849                 p = strchr_cpy(p, ' ', separator, sizeof(separator));
 850                 if (!p) continue;
 851                 extract_quote(separator, '"');
 852                 if (!strcmp(separator, "NIL"))
 853                         separator[0] = '\0';
 854
 855                 buf[0] = '\0';
 856                 while (*p == ' ') p++;
 857                 if (*p == '{' || *p == '"')
 858                         p = imap_parse_atom(SESSION(session)->sock, p,
 859                                             buf, sizeof(buf), str);
 860                 else
 861                         strncpy2(buf, p, sizeof(buf));
 862                 strtailchomp(buf, separator[0]);
 863                 if (buf[0] == '\0') continue;
 864                 if (!strcmp(buf, path)) continue;
 865
 866                 if (separator[0] != '\0')
 867                         subst_char(buf, separator[0], '/');
 868                 name = g_basename(buf);
 869                 if (name[0] == '.') continue;
 870
 871                 new_item = folder_item_new(name, buf);
 872                 if (strcasestr(flags, "\\Noinferiors") != NULL)
 873                         new_item->no_sub = TRUE;
 874                 if (strcasestr(flags, "\\Noselect") != NULL)
 875                         new_item->no_select = TRUE;
 876
 877                 item_list = g_slist_append(item_list, new_item);
 878
 879                 debug_print("folder %s has been added.\n", buf);
 880         }
 881
 882         g_string_free(str, TRUE);
 883         statusbar_pop_all();
 884
 885         return item_list;
 886 }
 887
 888 gint imap_create_tree(Folder *folder)
 889 {
 890         FolderItem *item;
 891
 892         g_return_val_if_fail(folder != NULL, -1);
 893         g_return_val_if_fail(folder->node != NULL, -1);
 894         g_return_val_if_fail(folder->node->data != NULL, -1);
 895         g_return_val_if_fail(folder->account != NULL, -1);
 896
 897         imap_scan_tree(folder);
 898
 899         item = FOLDER_ITEM(folder->node->data);
 900
 901         if (!folder->inbox) {
 902                 FolderItem *inbox;
 903
 904                 inbox = folder_item_new("INBOX", "INBOX");
 905                 inbox->stype = F_INBOX;
 906                 folder_item_append(item, inbox);
 907                 folder->inbox = inbox;
 908         }
 909         if (!folder->trash)
 910                 imap_create_trash(folder);
 911
 912         return 0;
 913 }
 914
 915 static gint imap_create_trash(Folder *folder)
 916 {
 917         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 918         FolderItem *item;
 919         FolderItem *new_item;
 920         gchar *trash_path;
 921         gchar *imap_dir = "";
 922
 923         g_return_val_if_fail(folder != NULL, -1);
 924         g_return_val_if_fail(folder->node != NULL, -1);
 925         g_return_val_if_fail(folder->node->data != NULL, -1);
 926         g_return_val_if_fail(folder->account != NULL, -1);
 927
 928         if (folder->account->imap_dir && *folder->account->imap_dir) {
 929                 gchar *tmpdir;
 930
 931                 Xstrdup_a(tmpdir, folder->account->imap_dir, return -1);
 932                 strtailchomp(tmpdir, '/');
 933                 Xalloca(imap_dir, strlen(tmpdir) + 2, return -1);
 934                 g_snprintf(imap_dir, strlen(tmpdir) + 2, "%s%c", tmpdir, '/');
 935         }
 936
 937         if (imapfolder->namespace && imapfolder->namespace->data) {
 938                 IMAPNameSpace *namespace =
 939                         (IMAPNameSpace *)imapfolder->namespace->data;
 940
 941                 if (*namespace->name != '\0') {
 942                         gchar *name;
 943
 944                         Xstrdup_a(name, namespace->name, return -1);
 945                         subst_char(name, namespace->separator, '/');
 946                         trash_path = g_strconcat(name, imap_dir, "Trash", NULL);
 947                 } else
 948                         trash_path = g_strconcat(imap_dir, "Trash", NULL);
 949         } else
 950                 trash_path = g_strconcat(imap_dir, "Trash", NULL);
 951
 952         item = FOLDER_ITEM(folder->node->data);
 953         new_item = imap_create_folder(folder, item, trash_path);
 954
 955         if (!new_item) {
 956                 gchar *path;
 957
 958                 new_item = folder_item_new("Trash", trash_path);
 959                 folder_item_append(item, new_item);
 960
 961                 path = folder_item_get_path(new_item);
 962                 if (!is_dir_exist(path))
 963                         make_dir_hier(path);
 964                 g_free(path);
 965         } else {
 966                 g_free(new_item->name);
 967                 new_item->name = g_strdup("Trash");
 968         }
 969         new_item->stype = F_TRASH;
 970         folder->trash = new_item;
 971
 972         g_free(trash_path);
 973
 974         return 0;
 975 }
 976
 977 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
 978                                const gchar *name)
 979 {
 980         gchar *dirpath, *imappath;
 981         IMAPSession *session;
 982         IMAPNameSpace *namespace;
 983         FolderItem *new_item;
 984         gchar *new_name;
 985         const gchar *p;
 986         gint ok;
 987
 988         g_return_val_if_fail(folder != NULL, NULL);
 989         g_return_val_if_fail(folder->account != NULL, NULL);
 990         g_return_val_if_fail(parent != NULL, NULL);
 991         g_return_val_if_fail(name != NULL, NULL);
 992
 993         session = imap_session_get(folder);
 994         if (!session) return NULL;
 995
 996         if (parent->path)
 997                 dirpath = g_strconcat(parent->path, "/", name, NULL);
 998         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
 999                 dirpath = g_strdup(name);
1000         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1001                 gchar *imap_dir;
1002
1003                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1004                 strtailchomp(imap_dir, '/');
1005                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1006         } else
1007                 dirpath = g_strdup(name);
1008
1009         Xstrdup_a(imappath, dirpath, {g_free(dirpath); return NULL;});
1010         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1011         namespace = imap_find_namespace(IMAP_FOLDER(folder), imappath);
1012         if (namespace && namespace->separator) {
1013                 imap_path_separator_subst(imappath, namespace->separator);
1014                 imap_path_separator_subst(new_name, namespace->separator);
1015                 strtailchomp(new_name, namespace->separator);
1016         }
1017         strtailchomp(dirpath, '/');
1018
1019         if (strcmp(name, "INBOX") != 0) {
1020                 GPtrArray *argbuf;
1021                 gint i;
1022                 gboolean exist = FALSE;
1023
1024                 argbuf = g_ptr_array_new();
1025                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imappath,
1026                                    argbuf);
1027                 statusbar_pop_all();
1028                 if (ok != IMAP_SUCCESS) {
1029                         log_warning(_("can't create mailbox: LIST failed\n"));
1030                         g_free(dirpath);
1031                         g_ptr_array_free(argbuf, TRUE);
1032                         return NULL;
1033                 }
1034
1035                 for (i = 0; i < argbuf->len; i++) {
1036                         gchar *str;
1037                         str = g_ptr_array_index(argbuf, i);
1038                         if (!strncmp(str, "LIST ", 5)) {
1039                                 exist = TRUE;
1040                                 break;
1041                         }
1042                 }
1043                 g_ptr_array_free(argbuf, TRUE);
1044
1045                 if (!exist) {
1046                         ok = imap_cmd_create(SESSION(session)->sock, imappath);
1047                         statusbar_pop_all();
1048                         if (ok != IMAP_SUCCESS) {
1049                                 log_warning(_("can't create mailbox\n"));
1050                                 g_free(dirpath);
1051                                 return NULL;
1052                         }
1053                 }
1054         }
1055
1056         new_item = folder_item_new(new_name, dirpath);
1057         folder_item_append(parent, new_item);
1058         g_free(dirpath);
1059
1060         dirpath = folder_item_get_path(new_item);
1061         if (!is_dir_exist(dirpath))
1062                 make_dir_hier(dirpath);
1063         g_free(dirpath);
1064
1065         return new_item;
1066 }
1067
1068 gint imap_remove_folder(Folder *folder, FolderItem *item)
1069 {
1070         gint ok;
1071         IMAPSession *session;
1072         gchar *path;
1073
1074         g_return_val_if_fail(folder != NULL, -1);
1075         g_return_val_if_fail(item != NULL, -1);
1076         g_return_val_if_fail(item->path != NULL, -1);
1077
1078         session = imap_session_get(folder);
1079         if (!session) return -1;
1080
1081         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1082         ok = imap_cmd_delete(SESSION(session)->sock, path);
1083         statusbar_pop_all();
1084         if (ok != IMAP_SUCCESS) {
1085                 log_warning(_("can't delete mailbox\n"));
1086                 g_free(path);
1087                 return -1;
1088         }
1089
1090         g_free(path);
1091         folder_item_remove(item);
1092
1093         return 0;
1094 }
1095
1096 static GSList *imap_get_uncached_messages(IMAPSession *session,
1097                                           FolderItem *item,
1098                                           guint32 first_uid, guint32 last_uid)
1099 {
1100         gchar *tmp;
1101         GSList *newlist = NULL;
1102         GSList *llast = NULL;
1103         GString *str;
1104         MsgInfo *msginfo;
1105
1106         g_return_val_if_fail(session != NULL, NULL);
1107         g_return_val_if_fail(item != NULL, NULL);
1108         g_return_val_if_fail(item->folder != NULL, NULL);
1109         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1110         g_return_val_if_fail(first_uid <= last_uid, NULL);
1111
1112         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1113             != IMAP_SUCCESS) {
1114                 log_warning(_("can't get envelope\n"));
1115                 return NULL;
1116         }
1117
1118         str = g_string_new(NULL);
1119
1120         for (;;) {
1121                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1122                         log_warning(_("error occurred while getting envelope.\n"));
1123                         g_string_free(str, TRUE);
1124                         return newlist;
1125                 }
1126                 strretchomp(tmp);
1127                 log_print("IMAP4< %s\n", tmp);
1128                 if (tmp[0] != '*' || tmp[1] != ' ') {
1129                         g_free(tmp);
1130                         break;
1131                 }
1132                 g_string_assign(str, tmp);
1133                 g_free(tmp);
1134
1135                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
1136                 if (!msginfo) {
1137                         log_warning(_("can't parse envelope: %s\n"), str->str);
1138                         continue;
1139                 }
1140
1141                 msginfo->folder = item;
1142
1143                 if (!newlist)
1144                         llast = newlist = g_slist_append(newlist, msginfo);
1145                 else {
1146                         llast = g_slist_append(llast, msginfo);
1147                         llast = llast->next;
1148                 }
1149         }
1150
1151         g_string_free(str, TRUE);
1152
1153         return newlist;
1154 }
1155
1156 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
1157                                            guint32 first_uid, guint32 last_uid)
1158 {
1159         GSList *cur, *next;
1160         MsgInfo *msginfo;
1161         gchar *dir;
1162
1163         g_return_val_if_fail(item != NULL, mlist);
1164         g_return_val_if_fail(item->folder != NULL, mlist);
1165         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
1166
1167         debug_print(_("Deleting cached messages %d - %d ... "),
1168                     first_uid, last_uid);
1169
1170         dir = folder_item_get_path(item);
1171         remove_numbered_files(dir, first_uid, last_uid);
1172         g_free(dir);
1173
1174         for (cur = mlist; cur != NULL; ) {
1175                 next = cur->next;
1176
1177                 msginfo = (MsgInfo *)cur->data;
1178                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
1179                     msginfo->msgnum <= last_uid) {
1180                         procmsg_msginfo_free(msginfo);
1181                         mlist = g_slist_remove(mlist, msginfo);
1182                 }
1183
1184                 cur = next;
1185         }
1186
1187         debug_print(_("done.\n"));
1188
1189         return mlist;
1190 }
1191
1192 static void imap_delete_all_cached_messages(FolderItem *item)
1193 {
1194         gchar *dir;
1195
1196         g_return_if_fail(item != NULL);
1197         g_return_if_fail(item->folder != NULL);
1198         g_return_if_fail(item->folder->type == F_IMAP);
1199
1200         debug_print(_("Deleting all cached messages... "));
1201
1202         dir = folder_item_get_path(item);
1203         remove_all_numbered_files(dir);
1204         g_free(dir);
1205
1206         debug_print(_("done.\n"));
1207 }
1208
1209 static SockInfo *imap_open(const gchar *server, gushort port, gchar *buf)
1210 {
1211         SockInfo *sock;
1212
1213         if ((sock = sock_connect(server, port)) == NULL) {
1214                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1215                             server, port);
1216                 return NULL;
1217         }
1218
1219         imap_cmd_count = 0;
1220
1221         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1222                 sock_close(sock);
1223                 return NULL;
1224         }
1225
1226         return sock;
1227 }
1228
1229 #define THROW goto catch
1230
1231 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1232 {
1233         gchar *ns_str;
1234         gchar *name;
1235         gchar *separator;
1236         gchar *p;
1237         IMAPNameSpace *namespace;
1238         GList *ns_list = NULL;
1239
1240         g_return_if_fail(session != NULL);
1241         g_return_if_fail(folder != NULL);
1242
1243         if (folder->namespace != NULL) return;
1244
1245         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1246             != IMAP_SUCCESS) {
1247                 log_warning(_("can't get namespace\n"));
1248                 return;
1249         }
1250
1251         /* get the first element */
1252         extract_one_parenthesis_with_skip_quote(ns_str, '"', '(', ')');
1253         g_strstrip(ns_str);
1254         p = ns_str;
1255
1256         while (*p != '\0') {
1257                 /* parse ("#foo" "/") */
1258
1259                 while (*p && *p != '(') p++;
1260                 if (*p == '\0') THROW;
1261                 p++;
1262
1263                 while (*p && *p != '"') p++;
1264                 if (*p == '\0') THROW;
1265                 p++;
1266                 name = p;
1267
1268                 while (*p && *p != '"') p++;
1269                 if (*p == '\0') THROW;
1270                 *p = '\0';
1271                 p++;
1272
1273                 while (*p && isspace(*p)) p++;
1274                 if (*p == '\0') THROW;
1275                 if (strncmp(p, "NIL", 3) == 0)
1276                         separator = NULL;
1277                 else if (*p == '"') {
1278                         p++;
1279                         separator = p;
1280                         while (*p && *p != '"') p++;
1281                         if (*p == '\0') THROW;
1282                         *p = '\0';
1283                         p++;
1284                 } else THROW;
1285
1286                 while (*p && *p != ')') p++;
1287                 if (*p == '\0') THROW;
1288                 p++;
1289
1290                 namespace = g_new(IMAPNameSpace, 1);
1291                 namespace->name = g_strdup(name);
1292                 namespace->separator = separator ? separator[0] : '\0';
1293                 ns_list = g_list_append(ns_list, namespace);
1294                 IMAP_FOLDER(folder)->namespace = ns_list;
1295         }
1296
1297 catch:
1298         g_free(ns_str);
1299         return;
1300 }
1301
1302 #undef THROW
1303
1304 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1305                                           const gchar *path)
1306 {
1307         IMAPNameSpace *namespace = NULL;
1308         GList *ns_list;
1309         gchar *name;
1310
1311         g_return_val_if_fail(folder != NULL, NULL);
1312         g_return_val_if_fail(path != NULL, NULL);
1313
1314         ns_list = folder->namespace;
1315
1316         for (; ns_list != NULL; ns_list = ns_list->next) {
1317                 IMAPNameSpace *tmp_ns = ns_list->data;
1318
1319                 Xstrdup_a(name, tmp_ns->name, return namespace);
1320                 if (tmp_ns->separator && tmp_ns->separator != '/')
1321                         subst_char(name, tmp_ns->separator, '/');
1322                 if (strncmp(path, name, strlen(name)) == 0)
1323                         namespace = tmp_ns;
1324         }
1325
1326         return namespace;
1327 }
1328
1329 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1330 {
1331         gchar *real_path;
1332         IMAPNameSpace *namespace;
1333
1334         g_return_val_if_fail(folder != NULL, NULL);
1335         g_return_val_if_fail(path != NULL, NULL);
1336
1337         real_path = g_strdup(path);
1338         namespace = imap_find_namespace(folder, path);
1339         if (namespace && namespace->separator)
1340                 imap_path_separator_subst(real_path, namespace->separator);
1341
1342         return real_path;
1343 }
1344
1345 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1346                               gchar *dest, gint dest_len, GString *str)
1347 {
1348         gchar *cur_pos = src;
1349
1350         g_return_val_if_fail(str != NULL, cur_pos);
1351
1352         while (*cur_pos == ' ') cur_pos++;
1353
1354         if (!strncmp(cur_pos, "NIL", 3)) {
1355                 *dest = '\0';
1356                 cur_pos += 3;
1357         } else if (*cur_pos == '\"') {
1358                 gchar *p;
1359
1360                 p = strchr_cpy(cur_pos + 1, '\"', dest, dest_len);
1361                 cur_pos = p ? p : cur_pos + 2;
1362         } else if (*cur_pos == '{') {
1363                 gchar buf[32];
1364                 gint len;
1365                 gchar *nextline;
1366
1367                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1368                 len = atoi(buf);
1369
1370                 if ((nextline = sock_getline(sock)) == NULL)
1371                         return cur_pos;
1372                 strretchomp(nextline);
1373                 log_print("IMAP4< %s\n", nextline);
1374                 g_string_assign(str, nextline);
1375
1376                 len = MIN(len, strlen(nextline));
1377                 memcpy(dest, nextline, MIN(len, dest_len - 1));
1378                 dest[MIN(len, dest_len - 1)] = '\0';
1379                 cur_pos = str->str + len;
1380         }
1381
1382         return cur_pos;
1383 }
1384
1385 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1386                                      gchar *out_from_str,
1387                                      gchar *out_fromname_str,
1388                                      GString *str)
1389 {
1390         gchar buf[IMAPBUFSIZE];
1391         gchar *userid;
1392         gchar *domain;
1393         gchar *cur_pos = start;
1394
1395         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1396         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1397
1398         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1399
1400         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1401         Xstrdup_a(userid, buf, return cur_pos + 1);
1402
1403         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1404         Xstrdup_a(domain, buf, return cur_pos + 1);
1405
1406         if (out_fromname_str[0] != '\0') {
1407                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1408                            out_fromname_str, userid, domain);
1409         } else {
1410                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1411                            userid, domain);
1412                 strcpy(out_fromname_str, out_from_str);
1413         }
1414
1415         while (*cur_pos == ' ') cur_pos++;
1416         g_return_val_if_fail(*cur_pos == ')', NULL);
1417
1418         return cur_pos + 1;
1419 }
1420
1421 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1422                                  gchar **out_from_str,
1423                                  gchar **out_fromname_str,
1424                                  GString *str)
1425 {
1426         gchar buf[IMAPBUFSIZE];
1427         gchar name_buf[IMAPBUFSIZE];
1428         gchar *cur_pos = start;
1429         GString *addr_str;
1430
1431         if (out_from_str)     *out_from_str     = NULL;
1432         if (out_fromname_str) *out_fromname_str = NULL;
1433         buf[0] = name_buf[0] = '\0';
1434
1435         if (!strncmp(cur_pos, "NIL", 3)) {
1436                 if (out_from_str)     *out_from_str     = g_strdup("");
1437                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1438                 return cur_pos + 3;
1439         }
1440
1441         g_return_val_if_fail(*cur_pos == '(', NULL);
1442         cur_pos++;
1443
1444         addr_str = g_string_new(NULL);
1445
1446         for (;;) {
1447                 gchar ch = *cur_pos++;
1448                 if (ch == ')') break;
1449                 if (ch == '(') {
1450                         cur_pos = imap_parse_one_address
1451                                 (sock, cur_pos, buf, name_buf, str);
1452                         if (!cur_pos) {
1453                                 g_string_free(addr_str, TRUE);
1454                                 return NULL;
1455                         }
1456                         if (addr_str->str[0] != '\0')
1457                                 g_string_append(addr_str, ", ");
1458                         g_string_append(addr_str, buf);
1459                 }
1460         }
1461
1462         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1463         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1464
1465         g_string_free(addr_str, TRUE);
1466
1467         return cur_pos;
1468 }
1469
1470 static MsgFlags imap_parse_flags(const gchar *flag_str)
1471 {
1472         const gchar *p = flag_str;
1473         MsgFlags flags;
1474
1475         flags = 0;
1476         MSG_SET_FLAGS(flags, MSG_UNREAD|MSG_IMAP);
1477
1478         while ((p = strchr(p, '\\')) != NULL) {
1479                 p++;
1480
1481                 if (g_strncasecmp(p, "Recent", 6) == 0) {
1482                         MSG_SET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1483                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
1484                         MSG_UNSET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1485                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
1486                         MSG_SET_FLAGS(flags, MSG_DELETED);
1487                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
1488                         MSG_SET_FLAGS(flags, MSG_MARKED);
1489                 }
1490         }
1491
1492         return flags;
1493 }
1494
1495 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
1496 {
1497         MsgInfo *msginfo;
1498         gchar buf[IMAPBUFSIZE];
1499         gchar tmp[IMAPBUFSIZE];
1500         gchar *cur_pos;
1501         gint msgnum;
1502         guint32 uid = 0;
1503         size_t size = 0;
1504         gchar *date = NULL;
1505         time_t date_t = 0;
1506         gchar *subject = NULL;
1507         gchar *tmp_from;
1508         gchar *tmp_fromname;
1509         gchar *from = NULL;
1510         gchar *fromname = NULL;
1511         gchar *tmp_to;
1512         gchar *to = NULL;
1513         gchar *inreplyto = NULL;
1514         gchar *msgid = NULL;
1515         MsgFlags flags = 0;
1516
1517         g_return_val_if_fail(line_str != NULL, NULL);
1518         g_return_val_if_fail(line_str->str[0] == '*' &&
1519                              line_str->str[1] == ' ', NULL);
1520
1521         cur_pos = line_str->str + 2;
1522
1523 #define PARSE_ONE_ELEMENT(ch) \
1524 { \
1525         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
1526         g_return_val_if_fail(cur_pos != NULL, NULL); \
1527 }
1528
1529         PARSE_ONE_ELEMENT(' ');
1530         msgnum = atoi(buf);
1531
1532         PARSE_ONE_ELEMENT(' ');
1533         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
1534
1535         g_return_val_if_fail(*cur_pos == '(', NULL);
1536         cur_pos++;
1537
1538         while (*cur_pos != '\0' && *cur_pos != ')') {
1539                 while (*cur_pos == ' ') cur_pos++;
1540
1541                 if (!strncmp(cur_pos, "UID ", 4)) {
1542                         cur_pos += 4;
1543                         uid = strtoul(cur_pos, &cur_pos, 10);
1544                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
1545                         cur_pos += 6;
1546                         g_return_val_if_fail(*cur_pos == '(', NULL);
1547                         cur_pos++;
1548                         PARSE_ONE_ELEMENT(')');
1549                         flags = imap_parse_flags(buf);
1550                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
1551                         cur_pos += 12;
1552                         size = strtol(cur_pos, &cur_pos, 10);
1553                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
1554                         cur_pos += 9;
1555                         g_return_val_if_fail(*cur_pos == '(', NULL);
1556                         cur_pos = imap_parse_atom
1557                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
1558                         Xstrdup_a(date, buf, return NULL);
1559                         date_t = procheader_date_parse(NULL, date, 0);
1560
1561                         cur_pos = imap_parse_atom
1562                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1563                         if (buf[0] != '\0') {
1564                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
1565                                 Xstrdup_a(subject, tmp, return NULL);
1566                         }
1567
1568                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1569                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1570                                                      &tmp_from, &tmp_fromname,
1571                                                      line_str);
1572                         Xstrdup_a(from, tmp_from,
1573                                   {g_free(tmp_from); g_free(tmp_fromname);
1574                                    return NULL;});
1575                         Xstrdup_a(fromname, tmp_fromname,
1576                                   {g_free(tmp_from); g_free(tmp_fromname);
1577                                    return NULL;});
1578                         g_free(tmp_from);
1579                         g_free(tmp_fromname);
1580
1581 #define SKIP_ONE_ELEMENT() \
1582 { \
1583         g_return_val_if_fail(*cur_pos == ' ', NULL); \
1584         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
1585                                      line_str); \
1586 }
1587
1588                         /* skip sender and reply-to */
1589                         SKIP_ONE_ELEMENT();
1590                         SKIP_ONE_ELEMENT();
1591
1592                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1593                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1594                                                      &tmp_to, NULL, line_str);
1595                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
1596                         g_free(tmp_to);
1597
1598                         /* skip Cc and Bcc */
1599                         SKIP_ONE_ELEMENT();
1600                         SKIP_ONE_ELEMENT();
1601
1602 #undef SKIP_ONE_ELEMENT
1603
1604                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1605                         cur_pos = imap_parse_atom
1606                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1607                         if (buf[0] != '\0') {
1608                                 eliminate_parenthesis(buf, '(', ')');
1609                                 extract_parenthesis(buf, '<', '>');
1610                                 remove_space(buf);
1611                                 Xstrdup_a(inreplyto, buf, return NULL);
1612                         }
1613
1614                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1615                         cur_pos = imap_parse_atom
1616                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1617                         if (buf[0] != '\0') {
1618                                 extract_parenthesis(buf, '<', '>');
1619                                 remove_space(buf);
1620                                 Xstrdup_a(msgid, buf, return NULL);
1621                         }
1622
1623                         g_return_val_if_fail(*cur_pos == ')', NULL);
1624                         cur_pos++;
1625                 } else {
1626                         g_warning("invalid FETCH response: %s\n", cur_pos);
1627                         break;
1628                 }
1629         }
1630
1631         msginfo = g_new0(MsgInfo, 1);
1632         msginfo->msgnum = uid;
1633         msginfo->size = size;
1634         msginfo->date = g_strdup(date);
1635         msginfo->date_t = date_t;
1636         msginfo->subject = g_strdup(subject);
1637         msginfo->from = g_strdup(from);
1638         msginfo->fromname = g_strdup(fromname);
1639         msginfo->to = g_strdup(to);
1640         msginfo->inreplyto = g_strdup(inreplyto);
1641         msginfo->msgid = g_strdup(msgid);
1642         msginfo->flags = flags;
1643
1644         return msginfo;
1645 }
1646
1647 static gint imap_set_message_flags(IMAPSession *session,
1648                                    guint32 first_uid,
1649                                    guint32 last_uid,
1650                                    IMAPFlags flags,
1651                                    gboolean is_set)
1652 {
1653         GString *buf;
1654         gint ok;
1655
1656         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
1657
1658         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
1659         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
1660         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
1661         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
1662         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
1663
1664         if (buf->str[buf->len - 1] == ' ')
1665                 g_string_truncate(buf, buf->len - 1);
1666
1667         g_string_append_c(buf, ')');
1668
1669         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
1670                             buf->str);
1671         g_string_free(buf, TRUE);
1672
1673         return ok;
1674 }
1675
1676 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
1677                         const gchar *path,
1678                         gint *exists, gint *recent, gint *unseen,
1679                         guint32 *uid_validity)
1680 {
1681         gchar *real_path;
1682         gint ok;
1683
1684         real_path = imap_get_real_path(folder, path);
1685         ok = imap_cmd_select(SESSION(session)->sock, real_path,
1686                              exists, recent, unseen, uid_validity);
1687         if (ok != IMAP_SUCCESS)
1688                 log_warning(_("can't select folder: %s\n"), real_path);
1689         g_free(real_path);
1690
1691         return ok;
1692 }
1693
1694 #define THROW(err) { ok = err; goto catch; }
1695
1696 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
1697 {
1698         gint ok;
1699         GPtrArray *argbuf;
1700         gchar *str;
1701         gint num;
1702
1703         *uid = 0;
1704         argbuf = g_ptr_array_new();
1705
1706         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
1707         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
1708                 THROW(ok);
1709
1710         str = search_array_contain_str(argbuf, "FETCH");
1711         if (!str) THROW(IMAP_ERROR);
1712
1713         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
1714             num != msgnum) {
1715                 g_warning("imap_get_uid(): invalid FETCH line.\n");
1716                 THROW(IMAP_ERROR);
1717         }
1718
1719 catch:
1720         ptr_array_free_strings(argbuf);
1721         g_ptr_array_free(argbuf, TRUE);
1722
1723         return ok;
1724 }
1725
1726 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
1727                         const gchar *path,
1728                         gint *messages, gint *recent, gint *unseen,
1729                         guint32 *uid_validity)
1730 {
1731         gchar *real_path;
1732         gint ok;
1733         GPtrArray *argbuf;
1734         gchar *str;
1735
1736         *messages = *recent = *unseen = *uid_validity = 0;
1737
1738         argbuf = g_ptr_array_new();
1739
1740         real_path = imap_get_real_path(folder, path);
1741         if (strchr(real_path, ' ') != NULL)
1742                 imap_cmd_gen_send(SESSION(session)->sock, "STATUS \"%s\" "
1743                                         "(MESSAGES RECENT UNSEEN UIDVALIDITY)",
1744                                   real_path);
1745         else
1746                 imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
1747                                         "(MESSAGES RECENT UNSEEN UIDVALIDITY)",
1748                                   real_path);
1749
1750         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
1751         if (ok != IMAP_SUCCESS) THROW(ok);
1752
1753         str = search_array_contain_str(argbuf, "STATUS");
1754         if (!str) THROW(IMAP_ERROR);
1755
1756         str = strchr(str, '(');
1757         if (!str) THROW(IMAP_ERROR);
1758         str++;
1759         while (*str != '\0' && *str != ')') {
1760                 while (*str == ' ') str++;
1761
1762                 if (!strncmp(str, "MESSAGES ", 9)) {
1763                         str += 9;
1764                         *messages = strtol(str, &str, 10);
1765                 } else if (!strncmp(str, "RECENT ", 7)) {
1766                         str += 7;
1767                         *recent = strtol(str, &str, 10);
1768                 } else if (!strncmp(str, "UNSEEN ", 7)) {
1769                         str += 7;
1770                         *unseen = strtol(str, &str, 10);
1771                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
1772                         str += 12;
1773                         *uid_validity = strtoul(str, &str, 10);
1774                 } else {
1775                         g_warning("invalid STATUS response: %s\n", str);
1776                         break;
1777                 }
1778         }
1779
1780 catch:
1781         g_free(real_path);
1782         ptr_array_free_strings(argbuf);
1783         g_ptr_array_free(argbuf, TRUE);
1784
1785         return ok;
1786 }
1787
1788 #undef THROW
1789
1790
1791 /* low-level IMAP4rev1 commands */
1792
1793 static gint imap_cmd_login(SockInfo *sock,
1794                            const gchar *user, const gchar *pass)
1795 {
1796         gint ok;
1797
1798         if (strchr(user, ' ') != NULL)
1799                 imap_cmd_gen_send(sock, "LOGIN \"%s\" %s", user, pass);
1800         else
1801                 imap_cmd_gen_send(sock, "LOGIN %s %s", user, pass);
1802
1803         ok = imap_cmd_ok(sock, NULL);
1804         if (ok != IMAP_SUCCESS)
1805                 log_warning(_("IMAP4 login failed.\n"));
1806
1807         return ok;
1808 }
1809
1810 static gint imap_cmd_logout(SockInfo *sock)
1811 {
1812         imap_cmd_gen_send(sock, "LOGOUT");
1813         return imap_cmd_ok(sock, NULL);
1814 }
1815
1816 static gint imap_cmd_noop(SockInfo *sock)
1817 {
1818         imap_cmd_gen_send(sock, "NOOP");
1819         return imap_cmd_ok(sock, NULL);
1820 }
1821
1822 #define THROW(err) { ok = err; goto catch; }
1823
1824 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
1825 {
1826         gint ok;
1827         GPtrArray *argbuf;
1828         gchar *str;
1829
1830         argbuf = g_ptr_array_new();
1831
1832         imap_cmd_gen_send(sock, "NAMESPACE");
1833         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
1834
1835         str = search_array_contain_str(argbuf, "NAMESPACE");
1836         if (!str) THROW(IMAP_ERROR);
1837
1838         *ns_str = g_strdup(str);
1839
1840 catch:
1841         ptr_array_free_strings(argbuf);
1842         g_ptr_array_free(argbuf, TRUE);
1843
1844         return ok;
1845 }
1846
1847 #undef THROW
1848
1849 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
1850                           const gchar *mailbox, GPtrArray *argbuf)
1851 {
1852         gchar *new_ref;
1853         gchar *new_mailbox;
1854
1855         if (!ref) ref = "\"\"";
1856         if (!mailbox) mailbox = "\"\"";
1857
1858         if (*ref != '"' && strchr(ref, ' ') != NULL)
1859                 new_ref = g_strdup_printf("\"%s\"", ref);
1860         else
1861                 new_ref = g_strdup(ref);
1862         if (*mailbox != '"' && strchr(mailbox, ' ') != NULL)
1863                 new_mailbox = g_strdup_printf("\"%s\"", mailbox);
1864         else
1865                 new_mailbox = g_strdup(mailbox);
1866
1867         imap_cmd_gen_send(sock, "LIST %s %s", new_ref, new_mailbox);
1868
1869         g_free(new_ref);
1870         g_free(new_mailbox);
1871
1872         return imap_cmd_ok(sock, argbuf);
1873 }
1874
1875 #define THROW goto catch
1876
1877 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
1878                             gint *exists, gint *recent, gint *unseen,
1879                             guint32 *uid_validity)
1880 {
1881         gint ok;
1882         gchar *resp_str;
1883         GPtrArray *argbuf;
1884
1885         *exists = *recent = *unseen = *uid_validity = 0;
1886         argbuf = g_ptr_array_new();
1887
1888         if (strchr(folder, ' ') != NULL)
1889                 imap_cmd_gen_send(sock, "SELECT \"%s\"", folder);
1890         else
1891                 imap_cmd_gen_send(sock, "SELECT %s", folder);
1892
1893         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
1894
1895         resp_str = search_array_contain_str(argbuf, "EXISTS");
1896         if (resp_str) {
1897                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
1898                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
1899                         THROW;
1900                 }
1901         }
1902
1903         resp_str = search_array_contain_str(argbuf, "RECENT");
1904         if (resp_str) {
1905                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
1906                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
1907                         THROW;
1908                 }
1909         }
1910
1911         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
1912         if (resp_str) {
1913                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
1914                     != 1) {
1915                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
1916                         THROW;
1917                 }
1918         }
1919
1920         resp_str = search_array_contain_str(argbuf, "UNSEEN");
1921         if (resp_str) {
1922                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
1923                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
1924                         THROW;
1925                 }
1926         }
1927
1928 catch:
1929         ptr_array_free_strings(argbuf);
1930         g_ptr_array_free(argbuf, TRUE);
1931
1932         return ok;
1933 }
1934
1935 #undef THROW
1936
1937 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
1938 {
1939         if (strchr(folder, ' ') != NULL)
1940                 imap_cmd_gen_send(sock, "CREATE \"%s\"", folder);
1941         else
1942                 imap_cmd_gen_send(sock, "CREATE %s", folder);
1943
1944         return imap_cmd_ok(sock, NULL);
1945 }
1946
1947 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
1948 {
1949         if (strchr(folder, ' ') != NULL)
1950                 imap_cmd_gen_send(sock, "DELETE \"%s\"", folder);
1951         else
1952                 imap_cmd_gen_send(sock, "DELETE %s", folder);
1953
1954         return imap_cmd_ok(sock, NULL);
1955 }
1956
1957 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
1958 {
1959         gint ok;
1960         gchar buf[IMAPBUFSIZE];
1961         gchar *cur_pos;
1962         gchar size_str[32];
1963         glong size_num;
1964
1965         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
1966
1967         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
1968
1969         if (sock_gets(sock, buf, sizeof(buf)) < 0)
1970                 return IMAP_ERROR;
1971         strretchomp(buf);
1972         if (buf[0] != '*' || buf[1] != ' ')
1973                 return IMAP_ERROR;
1974         log_print("IMAP4< %s\n", buf);
1975
1976         cur_pos = strchr(buf, '{');
1977         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1978         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
1979         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1980         size_num = atol(size_str);
1981
1982         if (*cur_pos != '\0') return IMAP_ERROR;
1983
1984         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
1985                 return IMAP_ERROR;
1986
1987         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
1988                 return IMAP_ERROR;
1989
1990         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
1991                 return IMAP_ERROR;
1992
1993         ok = imap_cmd_ok(sock, NULL);
1994
1995         return ok;
1996 }
1997
1998 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
1999                             const gchar *file)
2000 {
2001         gint ok;
2002         gint size;
2003
2004         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2005
2006         size = get_file_size(file);
2007         imap_cmd_gen_send(sock, "APPEND %s {%d}", destfolder, size);
2008         ok = imap_cmd_ok(sock, NULL);
2009         if (ok != IMAP_SUCCESS) {
2010                 log_warning(_("can't append %s to %s\n"), file, destfolder);
2011                 return -1;
2012         }
2013
2014         return ok;
2015 }
2016
2017 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
2018 {
2019         gint ok;
2020
2021         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2022
2023         if (strchr(destfolder, ' ') != NULL)
2024                 imap_cmd_gen_send(sock, "UID COPY %d \"%s\"", uid, destfolder);
2025         else
2026                 imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder);
2027
2028         ok = imap_cmd_ok(sock, NULL);
2029         if (ok != IMAP_SUCCESS) {
2030                 log_warning(_("can't copy %d to %s\n"), uid, destfolder);
2031                 return -1;
2032         }
2033
2034         return ok;
2035 }
2036
2037 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2038 {
2039         imap_cmd_gen_send
2040                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
2041                  first_uid, last_uid);
2042
2043         return IMAP_SUCCESS;
2044 }
2045
2046 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2047                            gchar *sub_cmd)
2048 {
2049         gint ok;
2050
2051         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2052                           first_uid, last_uid, sub_cmd);
2053
2054         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2055                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2056                             first_uid, last_uid, sub_cmd);
2057                 return ok;
2058         }
2059
2060         return IMAP_SUCCESS;
2061 }
2062
2063 static gint imap_cmd_expunge(SockInfo *sock)
2064 {
2065         gint ok;
2066
2067         imap_cmd_gen_send(sock, "EXPUNGE");
2068         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2069                 log_warning(_("error while imap command: EXPUNGE\n"));
2070                 return ok;
2071         }
2072
2073         return IMAP_SUCCESS;
2074 }
2075
2076 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2077 {
2078         gint ok;
2079         gchar buf[IMAPBUFSIZE];
2080         gint cmd_num;
2081         gchar cmd_status[IMAPBUFSIZE];
2082
2083         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2084                == IMAP_SUCCESS) {
2085                 if (buf[0] == '*' && buf[1] == ' ') {
2086                         if (argbuf)
2087                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2088                         continue;
2089                 }
2090
2091                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2092                         return IMAP_ERROR;
2093                 else if (cmd_num == imap_cmd_count &&
2094                          !strcmp(cmd_status, "OK")) {
2095                         if (argbuf)
2096                                 g_ptr_array_add(argbuf, g_strdup(buf));
2097                         return IMAP_SUCCESS;
2098                 } else
2099                         return IMAP_ERROR;
2100         }
2101
2102         return ok;
2103 }
2104
2105 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2106 {
2107         gchar buf[IMAPBUFSIZE];
2108         gchar tmp[IMAPBUFSIZE];
2109         gchar *p;
2110         va_list args;
2111
2112         va_start(args, format);
2113         g_vsnprintf(tmp, sizeof(tmp), format, args);
2114         va_end(args);
2115
2116         imap_cmd_count++;
2117
2118         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2119         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2120                 *p = '\0';
2121                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2122         } else
2123                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2124
2125         sock_write(sock, buf, strlen(buf));
2126 }
2127
2128 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
2129 {
2130         if (sock_gets(sock, buf, size) == -1)
2131                 return IMAP_SOCKET;
2132
2133         strretchomp(buf);
2134
2135         log_print("IMAP4< %s\n", buf);
2136
2137         return IMAP_SUCCESS;
2138 }
2139
2140
2141 /* misc utility functions */
2142
2143 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2144 {
2145         gchar *tmp;
2146
2147         dest[0] = '\0';
2148         tmp = strchr(src, ch);
2149         if (!tmp)
2150                 return NULL;
2151
2152         memcpy(dest, src, MIN(tmp - src, len - 1));
2153         dest[MIN(tmp - src, len - 1)] = '\0';
2154
2155         return tmp + 1;
2156 }
2157
2158 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
2159 {
2160         gint i;
2161
2162         for (i = 0; i < array->len; i++) {
2163                 gchar *tmp;
2164
2165                 tmp = g_ptr_array_index(array, i);
2166                 if (strstr(tmp, str) != NULL)
2167                         return tmp;
2168         }
2169
2170         return NULL;
2171 }
2172
2173 static void imap_path_separator_subst(gchar *str, gchar separator)
2174 {
2175         if (separator && separator != '/')
2176                 subst_char(str, '/', separator);
2177 }