src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 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 "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <ctype.h>
  33 #include <time.h>
  34 #if HAVE_LIBJCONV
  35 #  include <jconv.h>
  36 #endif
  37
  38 #include "intl.h"
  39 #include "imap.h"
  40 #include "socket.h"
  41 #include "ssl.h"
  42 #include "recv.h"
  43 #include "procmsg.h"
  44 #include "procheader.h"
  45 #include "folder.h"
  46 #include "statusbar.h"
  47 #include "prefs_account.h"
  48 #include "codeconv.h"
  49 #include "utils.h"
  50 #include "inputdialog.h"
  51
  52 #define IMAP4_PORT      143
  53 #if USE_SSL
  54 #define IMAPS_PORT      993
  55 #endif
  56
  57 #define QUOTE_IF_REQUIRED(out, str)                             \
  58 {                                                               \
  59         if (*str != '"' && strpbrk(str, " \t(){}%*") != NULL) { \
  60                 gchar *__tmp;                                   \
  61                 gint len;                                       \
  62                                                                 \
  63                 len = strlen(str) + 3;                          \
  64                 Xalloca(__tmp, len, return IMAP_ERROR);         \
  65                 g_snprintf(__tmp, len, "\"%s\"", str);          \
  66                 out = __tmp;                                    \
  67         } else {                                                \
  68                 Xstrdup_a(out, str, return IMAP_ERROR);         \
  69         }                                                       \
  70 }
  71
  72 static GList *session_list = NULL;
  73
  74 static gint imap_cmd_count = 0;
  75
  76 static void imap_folder_init            (Folder         *folder,
  77                                          const gchar    *name,
  78                                          const gchar    *path);
  79
  80 static IMAPSession *imap_session_get    (Folder         *folder);
  81
  82 static gint imap_scan_tree_recursive    (IMAPSession    *session,
  83                                          FolderItem     *item);
  84 static GSList *imap_parse_list          (IMAPSession    *session,
  85                                          const gchar    *real_path);
  86
  87 static void imap_create_missing_folders (Folder                 *folder);
  88 static FolderItem *imap_create_special_folder
  89                                         (Folder                 *folder,
  90                                          SpecialFolderItemType   stype,
  91                                          const gchar            *name);
  92
  93 static gint imap_do_copy                (Folder         *folder,
  94                                          FolderItem     *dest,
  95                                          MsgInfo        *msginfo,
  96                                          gboolean        remove_source);
  97 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  98                                          FolderItem     *dest,
  99                                          GSList         *msglist,
 100                                          gboolean        remove_source);
 101
 102 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
 103                                                  FolderItem     *item,
 104                                                  guint32         first_uid,
 105                                                  guint32         last_uid);
 106 static GSList *imap_delete_cached_messages      (GSList         *mlist,
 107                                                  FolderItem     *item,
 108                                                  guint32         first_uid,
 109                                                  guint32         last_uid);
 110 static void imap_delete_all_cached_messages     (FolderItem     *item);
 111
 112 #if USE_SSL
 113 static SockInfo *imap_open              (const gchar    *server,
 114                                          gushort         port,
 115                                          gboolean        use_ssl);
 116 #else
 117 static SockInfo *imap_open              (const gchar    *server,
 118                                          gushort         port);
 119 #endif
 120
 121 static SockInfo *imap_open_tunnel(const gchar *server,
 122                                   const gchar *tunnelcmd);
 123
 124 static SockInfo *imap_init_sock(SockInfo *sock);
 125
 126 static gint imap_set_message_flags      (IMAPSession    *session,
 127                                          guint32         first_uid,
 128                                          guint32         last_uid,
 129                                          IMAPFlags       flag,
 130                                          gboolean        is_set);
 131 static gint imap_select                 (IMAPSession    *session,
 132                                          IMAPFolder     *folder,
 133                                          const gchar    *path,
 134                                          gint           *exists,
 135                                          gint           *recent,
 136                                          gint           *unseen,
 137                                          guint32        *uid_validity);
 138 static gint imap_get_uid                (IMAPSession    *session,
 139                                          gint            msgnum,
 140                                          guint32        *uid);
 141 static gint imap_status                 (IMAPSession    *session,
 142                                          IMAPFolder     *folder,
 143                                          const gchar    *path,
 144                                          gint           *messages,
 145                                          gint           *recent,
 146                                          guint32        *uid_next,
 147                                          guint32        *uid_validity,
 148                                          gint           *unseen);
 149
 150 static void imap_parse_namespace                (IMAPSession    *session,
 151                                                  IMAPFolder     *folder);
 152 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 153                                                  const gchar    *path);
 154 static gchar imap_get_path_separator            (IMAPFolder     *folder,
 155                                                  const gchar    *path);
 156 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 157                                                  const gchar    *path);
 158
 159 static gchar *imap_parse_atom           (SockInfo       *sock,
 160                                          gchar          *src,
 161                                          gchar          *dest,
 162                                          gint            dest_len,
 163                                          GString        *str);
 164 static gchar *imap_parse_one_address    (SockInfo       *sock,
 165                                          gchar          *start,
 166                                          gchar          *out_from_str,
 167                                          gchar          *out_fromname_str,
 168                                          GString        *str);
 169 static gchar *imap_parse_address        (SockInfo       *sock,
 170                                          gchar          *start,
 171                                          gchar         **out_from_str,
 172                                          gchar         **out_fromname_str,
 173                                          GString        *str);
 174 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 175 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 176                                          GString        *line_str);
 177 static gint imap_greeting               (SockInfo *sock,
 178                                          gboolean *is_preauth);
 179
 180 /* low-level IMAP4rev1 commands */
 181 static gint imap_cmd_login      (SockInfo       *sock,
 182                                  const gchar    *user,
 183                                  const gchar    *pass);
 184 static gint imap_cmd_logout     (SockInfo       *sock);
 185 static gint imap_cmd_noop       (SockInfo       *sock);
 186 static gint imap_cmd_namespace  (SockInfo       *sock,
 187                                  gchar         **ns_str);
 188 static gint imap_cmd_list       (SockInfo       *sock,
 189                                  const gchar    *ref,
 190                                  const gchar    *mailbox,
 191                                  GPtrArray      *argbuf);
 192 static gint imap_cmd_do_select  (SockInfo       *sock,
 193                                  const gchar    *folder,
 194                                  gboolean        examine,
 195                                  gint           *exists,
 196                                  gint           *recent,
 197                                  gint           *unseen,
 198                                  guint32        *uid_validity);
 199 static gint imap_cmd_select     (SockInfo       *sock,
 200                                  const gchar    *folder,
 201                                  gint           *exists,
 202                                  gint           *recent,
 203                                  gint           *unseen,
 204                                  guint32        *uid_validity);
 205 static gint imap_cmd_examine    (SockInfo       *sock,
 206                                  const gchar    *folder,
 207                                  gint           *exists,
 208                                  gint           *recent,
 209                                  gint           *unseen,
 210                                  guint32        *uid_validity);
 211 static gint imap_cmd_create     (SockInfo       *sock,
 212                                  const gchar    *folder);
 213 static gint imap_cmd_rename     (SockInfo       *sock,
 214                                  const gchar    *oldfolder,
 215                                  const gchar    *newfolder);
 216 static gint imap_cmd_delete     (SockInfo       *sock,
 217                                  const gchar    *folder);
 218 static gint imap_cmd_envelope   (SockInfo       *sock,
 219                                  guint32         first_uid,
 220                                  guint32         last_uid);
 221 #if 0
 222 static gint imap_cmd_search     (SockInfo       *sock,
 223                                  GSList         *numlist);
 224 #endif
 225 static gint imap_cmd_fetch      (SockInfo       *sock,
 226                                  guint32         uid,
 227                                  const gchar    *filename);
 228 static gint imap_cmd_append     (SockInfo       *sock,
 229                                  const gchar    *destfolder,
 230                                  const gchar    *file);
 231 static gint imap_cmd_copy       (SockInfo       *sock,
 232                                  guint32         uid,
 233                                  const gchar    *destfolder);
 234 static gint imap_cmd_store      (SockInfo       *sock,
 235                                  guint32         first_uid,
 236                                  guint32         last_uid,
 237                                  gchar          *sub_cmd);
 238 static gint imap_cmd_expunge    (SockInfo       *sock);
 239
 240 static gint imap_cmd_ok         (SockInfo       *sock,
 241                                  GPtrArray      *argbuf);
 242 static void imap_cmd_gen_send   (SockInfo       *sock,
 243                                  const gchar    *format, ...);
 244 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 245                                  gchar          *buf,
 246                                  gint            size);
 247
 248 /* misc utility functions */
 249 static gchar *strchr_cpy                        (const gchar    *src,
 250                                                  gchar           ch,
 251                                                  gchar          *dest,
 252                                                  gint            len);
 253 static gchar *get_quoted                        (const gchar    *src,
 254                                                  gchar           ch,
 255                                                  gchar          *dest,
 256                                                  gint            len);
 257 static gchar *search_array_contain_str          (GPtrArray      *array,
 258                                                  gchar          *str);
 259 static gchar *search_array_str                  (GPtrArray      *array,
 260                                                  gchar          *str);
 261 static gchar *search_array_starts               (GPtrArray *array,
 262                                                  const gchar *str);
 263 static void imap_path_separator_subst           (gchar          *str,
 264                                                  gchar           separator);
 265
 266 static gchar *imap_modified_utf7_to_locale      (const gchar    *mutf7_str);
 267 static gchar *imap_locale_to_modified_utf7      (const gchar    *from);
 268
 269 static gboolean imap_rename_folder_func         (GNode          *node,
 270                                                  gpointer        data);
 271
 272
 273 Folder *imap_folder_new(const gchar *name, const gchar *path)
 274 {
 275         Folder *folder;
 276
 277         folder = (Folder *)g_new0(IMAPFolder, 1);
 278         imap_folder_init(folder, name, path);
 279
 280         return folder;
 281 }
 282
 283 void imap_folder_destroy(IMAPFolder *folder)
 284 {
 285         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 286 }
 287
 288 static void imap_folder_init(Folder *folder, const gchar *name,
 289                              const gchar *path)
 290 {
 291         folder_remote_folder_init(folder, name, path);
 292
 293         folder->type = F_IMAP;
 294
 295         folder->get_msg_list        = imap_get_msg_list;
 296         folder->fetch_msg           = imap_fetch_msg;
 297         folder->add_msg             = imap_add_msg;
 298         folder->move_msg            = imap_move_msg;
 299         folder->move_msgs_with_dest = imap_move_msgs_with_dest;
 300         folder->copy_msg            = imap_copy_msg;
 301         folder->copy_msgs_with_dest = imap_copy_msgs_with_dest;
 302         folder->remove_msg          = imap_remove_msg;
 303         folder->remove_all_msg      = imap_remove_all_msg;
 304         folder->is_msg_changed      = imap_is_msg_changed;
 305         folder->scan                = imap_scan_folder;
 306         folder->scan_tree           = imap_scan_tree;
 307         folder->create_tree         = imap_create_tree;
 308         folder->create_folder       = imap_create_folder;
 309         folder->rename_folder       = imap_rename_folder;
 310         folder->remove_folder       = imap_remove_folder;
 311 }
 312
 313 static IMAPSession *imap_session_get(Folder *folder)
 314 {
 315         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 316         gushort port;
 317
 318         g_return_val_if_fail(folder != NULL, NULL);
 319         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 320         g_return_val_if_fail(folder->account != NULL, NULL);
 321
 322 #if USE_SSL
 323         port = folder->account->set_imapport ? folder->account->imapport
 324                 : folder->account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 325 #else
 326         port = folder->account->set_imapport ? folder->account->imapport
 327                 : IMAP4_PORT;
 328 #endif
 329
 330         if (!rfolder->session) {
 331                 rfolder->session =
 332                         imap_session_new(folder->account);
 333                 if (rfolder->session) {
 334                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 335                                              IMAP_FOLDER(folder));
 336                         rfolder->session->last_access_time = time(NULL);
 337                 }
 338                 statusbar_pop_all();
 339                 return IMAP_SESSION(rfolder->session);
 340         }
 341
 342         /* I think the point of this code is to avoid sending a
 343          * keepalive if we've used the session recently and therefore
 344          * think it's still alive.  Unfortunately, most of the code
 345          * does not yet check for errors on the socket, and so if the
 346          * connection drops we don't notice until the timeout expires.
 347          * A better solution than sending a NOOP every time would be
 348          * for every command to be prepared to retry until it is
 349          * successfully sent. -- mbp */
 350         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 351                 rfolder->session->last_access_time = time(NULL);
 352                 statusbar_pop_all();
 353                 return IMAP_SESSION(rfolder->session);
 354         }
 355
 356         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 357                 log_warning(_("IMAP4 connection to %s:%d has been"
 358                               " disconnected. Reconnecting...\n"),
 359                             folder->account->recv_server, port);
 360                 session_destroy(rfolder->session);
 361                 rfolder->session =
 362                         imap_session_new(folder->account);
 363                 if (rfolder->session)
 364                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 365                                              IMAP_FOLDER(folder));
 366         }
 367
 368         if (rfolder->session)
 369                 rfolder->session->last_access_time = time(NULL);
 370         statusbar_pop_all();
 371         return IMAP_SESSION(rfolder->session);
 372 }
 373
 374 Session *imap_session_new(const PrefsAccount *account)
 375 {
 376         IMAPSession *session;
 377         SockInfo *imap_sock;
 378         gushort port;
 379         gchar *pass;
 380         gboolean is_preauth;
 381
 382 #ifdef USE_SSL
 383         /* FIXME: IMAP over SSL only... */
 384         gboolean use_ssl;
 385
 386         port = account->set_imapport ? account->imapport
 387                 : account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 388         use_ssl = account->ssl_imap ? TRUE : FALSE;
 389 #else
 390         port = account->set_imapport ? account->imapport
 391                 : IMAP4_PORT;
 392 #endif
 393
 394         if (account->set_tunnelcmd) {
 395                 log_message(_("creating tunneled IMAP4 connection\n"));
 396                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 397                                                   account->tunnelcmd)) == NULL)
 398                         return NULL;
 399         } else {
 400                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 401
 402                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 403                             account->recv_server, port);
 404
 405 #if USE_SSL
 406                 if ((imap_sock = imap_open(account->recv_server, port,
 407                                            use_ssl)) == NULL)
 408 #else
 409                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 410 #endif
 411                         return NULL;
 412         }
 413
 414         /* Only need to log in if the connection was not PREAUTH */
 415         imap_greeting(imap_sock, &is_preauth);
 416         log_message("IMAP connection is %s-authenticated\n",
 417                     (is_preauth) ? "pre" : "un");
 418         if (!is_preauth) {
 419                 g_return_val_if_fail(account->userid != NULL, NULL);
 420
 421                 pass = account->passwd;
 422                 if (!pass) {
 423                         gchar *tmp_pass;
 424                         tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 425                         if (!tmp_pass)
 426                                 return NULL;
 427                         Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 428                         g_free(tmp_pass);
 429                 }
 430
 431                 if (imap_cmd_login(imap_sock, account->userid, pass) != IMAP_SUCCESS) {
 432                         imap_cmd_logout(imap_sock);
 433                         sock_close(imap_sock);
 434                         return NULL;
 435                 }
 436         }
 437
 438         session = g_new(IMAPSession, 1);
 439         SESSION(session)->type             = SESSION_IMAP;
 440         SESSION(session)->server           = g_strdup(account->recv_server);
 441         SESSION(session)->sock             = imap_sock;
 442         SESSION(session)->connected        = TRUE;
 443         SESSION(session)->phase            = SESSION_READY;
 444         SESSION(session)->last_access_time = time(NULL);
 445         SESSION(session)->data             = NULL;
 446         session->mbox = NULL;
 447
 448         session_list = g_list_append(session_list, session);
 449
 450         return SESSION(session);
 451 }
 452
 453 void imap_session_destroy(IMAPSession *session)
 454 {
 455         sock_close(SESSION(session)->sock);
 456         SESSION(session)->sock = NULL;
 457
 458         g_free(session->mbox);
 459
 460         session_list = g_list_remove(session_list, session);
 461 }
 462
 463 void imap_session_destroy_all(void)
 464 {
 465         while (session_list != NULL) {
 466                 IMAPSession *session = (IMAPSession *)session_list->data;
 467
 468                 imap_cmd_logout(SESSION(session)->sock);
 469                 session_destroy(SESSION(session));
 470         }
 471 }
 472
 473 #define THROW goto catch
 474
 475 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 476 {
 477         GSList *mlist = NULL;
 478         IMAPSession *session;
 479         gint ok, exists = 0, recent = 0, unseen = 0;
 480         guint32 uid_validity = 0;
 481         guint32 first_uid = 0, last_uid = 0, begin;
 482
 483         g_return_val_if_fail(folder != NULL, NULL);
 484         g_return_val_if_fail(item != NULL, NULL);
 485         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 486         g_return_val_if_fail(folder->account != NULL, NULL);
 487
 488         session = imap_session_get(folder);
 489
 490         if (!session) {
 491                 mlist = procmsg_read_cache(item, FALSE);
 492                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 493                 procmsg_set_flags(mlist, item);
 494                 statusbar_pop_all();
 495                 return mlist;
 496         }
 497
 498         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 499                          &exists, &recent, &unseen, &uid_validity);
 500         if (ok != IMAP_SUCCESS) THROW;
 501         if (exists > 0) {
 502                 ok = imap_get_uid(session, 1, &first_uid);
 503                 if (ok != IMAP_SUCCESS) THROW;
 504                 if (1 != exists) {
 505                         ok = imap_get_uid(session, exists, &last_uid);
 506                         if (ok != IMAP_SUCCESS) THROW;
 507                 } else
 508                         last_uid = first_uid;
 509         } else {
 510                 imap_delete_all_cached_messages(item);
 511                 statusbar_pop_all();
 512                 return NULL;
 513         }
 514
 515         if (use_cache) {
 516                 guint32 cache_last;
 517
 518                 mlist = procmsg_read_cache(item, FALSE);
 519                 procmsg_set_flags(mlist, item);
 520                 cache_last = procmsg_get_last_num_in_cache(mlist);
 521
 522                 /* calculating the range of envelope to get */
 523                 if (item->mtime != uid_validity) {
 524                         /* mailbox is changed (get all) */
 525                         begin = first_uid;
 526                 } else if (last_uid < cache_last) {
 527                         /* mailbox is changed (get all) */
 528                         begin = first_uid;
 529                 } else if (last_uid == cache_last) {
 530                         /* mailbox unchanged (get none)*/
 531                         begin = 0;
 532                 } else {
 533                         begin = cache_last + 1;
 534                 }
 535
 536                 item->mtime = uid_validity;
 537
 538                 if (first_uid > 0 && last_uid > 0) {
 539                         mlist = imap_delete_cached_messages(mlist, item,
 540                                                             0, first_uid - 1);
 541                         mlist = imap_delete_cached_messages(mlist, item,
 542                                                             last_uid + 1,
 543                                                             UINT_MAX);
 544                 }
 545                 if (begin > 0)
 546                         mlist = imap_delete_cached_messages(mlist, item,
 547                                                             begin, UINT_MAX);
 548         } else {
 549                 imap_delete_all_cached_messages(item);
 550                 begin = first_uid;
 551         }
 552
 553         if (begin > 0 && begin <= last_uid) {
 554                 GSList *newlist;
 555                 newlist = imap_get_uncached_messages(session, item,
 556                                                      begin, last_uid);
 557                 mlist = g_slist_concat(mlist, newlist);
 558         }
 559
 560         item->last_num = last_uid;
 561
 562 catch:
 563         statusbar_pop_all();
 564         return mlist;
 565 }
 566
 567 #undef THROW
 568
 569 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 570 {
 571         gchar *path, *filename;
 572         IMAPSession *session;
 573         gint ok;
 574
 575         g_return_val_if_fail(folder != NULL, NULL);
 576         g_return_val_if_fail(item != NULL, NULL);
 577
 578         path = folder_item_get_path(item);
 579         if (!is_dir_exist(path))
 580                 make_dir_hier(path);
 581         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 582         g_free(path);
 583
 584         if (is_file_exist(filename)) {
 585                 debug_print(_("message %d has been already cached.\n"), uid);
 586                 return filename;
 587         }
 588
 589         session = imap_session_get(folder);
 590         if (!session) {
 591                 g_free(filename);
 592                 return NULL;
 593         }
 594
 595         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 596                          NULL, NULL, NULL, NULL);
 597         statusbar_pop_all();
 598         if (ok != IMAP_SUCCESS) {
 599                 g_warning(_("can't select mailbox %s\n"), item->path);
 600                 g_free(filename);
 601                 return NULL;
 602         }
 603
 604         debug_print(_("getting message %d...\n"), uid);
 605         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 606
 607         statusbar_pop_all();
 608
 609         if (ok != IMAP_SUCCESS) {
 610                 g_warning(_("can't fetch message %d\n"), uid);
 611                 g_free(filename);
 612                 return NULL;
 613         }
 614
 615         return filename;
 616 }
 617
 618 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 619                   gboolean remove_source)
 620 {
 621         gchar *destdir;
 622         IMAPSession *session;
 623         gint messages, recent, unseen;
 624         guint32 uid_next, uid_validity;
 625         gint ok;
 626
 627         g_return_val_if_fail(folder != NULL, -1);
 628         g_return_val_if_fail(dest != NULL, -1);
 629         g_return_val_if_fail(file != NULL, -1);
 630
 631         session = imap_session_get(folder);
 632         if (!session) return -1;
 633
 634         ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
 635                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 636         statusbar_pop_all();
 637         if (ok != IMAP_SUCCESS) {
 638                 g_warning(_("can't append message %s\n"), file);
 639                 return -1;
 640         }
 641
 642         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 643         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 644         g_free(destdir);
 645
 646         if (ok != IMAP_SUCCESS) {
 647                 g_warning(_("can't append message %s\n"), file);
 648                 return -1;
 649         }
 650
 651         if (remove_source) {
 652                 if (unlink(file) < 0)
 653                         FILE_OP_ERROR(file, "unlink");
 654         }
 655
 656         return uid_next;
 657 }
 658
 659 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 660                          gboolean remove_source)
 661 {
 662         gchar *destdir;
 663         IMAPSession *session;
 664         gint ok;
 665
 666         g_return_val_if_fail(folder != NULL, -1);
 667         g_return_val_if_fail(folder->type == F_IMAP, -1);
 668         g_return_val_if_fail(dest != NULL, -1);
 669         g_return_val_if_fail(msginfo != NULL, -1);
 670
 671         session = imap_session_get(folder);
 672         if (!session) return -1;
 673
 674         if (msginfo->folder == dest) {
 675                 g_warning(_("the src folder is identical to the dest.\n"));
 676                 return -1;
 677         }
 678
 679         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 680
 681         if (remove_source)
 682                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 683                             msginfo->folder->path, G_DIR_SEPARATOR,
 684                             msginfo->msgnum, destdir);
 685         else
 686                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 687                             msginfo->folder->path, G_DIR_SEPARATOR,
 688                             msginfo->msgnum, destdir);
 689
 690         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 691
 692         if (ok == IMAP_SUCCESS && remove_source) {
 693                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 694                                        IMAP_FLAG_DELETED, TRUE);
 695                 ok = imap_cmd_expunge(SESSION(session)->sock);
 696         }
 697
 698         g_free(destdir);
 699         statusbar_pop_all();
 700
 701         if (ok == IMAP_SUCCESS)
 702                 return 0;
 703         else
 704                 return -1;
 705 }
 706
 707 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 708                                         GSList *msglist,
 709                                         gboolean remove_source)
 710 {
 711         gchar *destdir;
 712         GSList *cur;
 713         MsgInfo *msginfo;
 714         IMAPSession *session;
 715         gint ok = IMAP_SUCCESS;
 716
 717         g_return_val_if_fail(folder != NULL, -1);
 718         g_return_val_if_fail(dest != NULL, -1);
 719         g_return_val_if_fail(msglist != NULL, -1);
 720
 721         session = imap_session_get(folder);
 722         if (!session) return -1;
 723
 724         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 725
 726         for (cur = msglist; cur != NULL; cur = cur->next) {
 727                 msginfo = (MsgInfo *)cur->data;
 728
 729                 if (msginfo->folder == dest) {
 730                         g_warning(_("the src folder is identical to the dest.\n"));
 731                         continue;
 732                 }
 733
 734                 if (remove_source)
 735                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 736                                     msginfo->folder->path, G_DIR_SEPARATOR,
 737                                     msginfo->msgnum, destdir);
 738                 else
 739                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 740                                     msginfo->folder->path, G_DIR_SEPARATOR,
 741                                     msginfo->msgnum, destdir);
 742
 743                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 744                                    destdir);
 745
 746                 if (ok == IMAP_SUCCESS && remove_source) {
 747                         imap_set_message_flags
 748                                 (session, msginfo->msgnum, msginfo->msgnum,
 749                                  IMAP_FLAG_DELETED, TRUE);
 750                 }
 751         }
 752
 753         if (remove_source)
 754                 ok = imap_cmd_expunge(SESSION(session)->sock);
 755
 756         g_free(destdir);
 757         statusbar_pop_all();
 758
 759         if (ok == IMAP_SUCCESS)
 760                 return 0;
 761         else
 762                 return -1;
 763 }
 764
 765 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 766 {
 767         gchar *srcfile;
 768         gint ret = 0;
 769
 770         g_return_val_if_fail(folder != NULL, -1);
 771         g_return_val_if_fail(dest != NULL, -1);
 772         g_return_val_if_fail(msginfo != NULL, -1);
 773         g_return_val_if_fail(msginfo->folder != NULL, -1);
 774
 775         if (folder == msginfo->folder->folder)
 776                 return imap_do_copy(folder, dest, msginfo, TRUE);
 777
 778         srcfile = procmsg_get_message_file(msginfo);
 779         if (!srcfile) return -1;
 780
 781         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 782         g_free(srcfile);
 783
 784         if (ret == 0)
 785                 ret = folder_item_remove_msg(msginfo->folder, msginfo->msgnum);
 786
 787         return ret;
 788 }
 789
 790 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 791                               GSList *msglist)
 792 {
 793         MsgInfo *msginfo;
 794         GSList *cur;
 795         gint ret = 0;
 796
 797         g_return_val_if_fail(folder != NULL, -1);
 798         g_return_val_if_fail(dest != NULL, -1);
 799         g_return_val_if_fail(msglist != NULL, -1);
 800
 801         msginfo = (MsgInfo *)msglist->data;
 802         if (folder == msginfo->folder->folder)
 803                 return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 804
 805         for (cur = msglist; cur != NULL; cur = cur->next) {
 806                 msginfo = (MsgInfo *)cur->data;
 807                 ret = imap_move_msg(folder, dest, msginfo);
 808                 if (ret != 0) break;
 809         }
 810
 811         return ret;
 812 }
 813
 814 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 815 {
 816         gchar *srcfile;
 817         gint ret = 0;
 818
 819         g_return_val_if_fail(folder != NULL, -1);
 820         g_return_val_if_fail(dest != NULL, -1);
 821         g_return_val_if_fail(msginfo != NULL, -1);
 822         g_return_val_if_fail(msginfo->folder != NULL, -1);
 823
 824         if (folder == msginfo->folder->folder)
 825                 return imap_do_copy(folder, dest, msginfo, FALSE);
 826
 827         srcfile = procmsg_get_message_file(msginfo);
 828         if (!srcfile) return -1;
 829
 830         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 831
 832         g_free(srcfile);
 833
 834         return ret;
 835 }
 836
 837 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 838                               GSList *msglist)
 839 {
 840         MsgInfo *msginfo;
 841         GSList *cur;
 842         gint ret = 0;
 843
 844         g_return_val_if_fail(folder != NULL, -1);
 845         g_return_val_if_fail(dest != NULL, -1);
 846         g_return_val_if_fail(msglist != NULL, -1);
 847
 848         msginfo = (MsgInfo *)msglist->data;
 849         if (folder == msginfo->folder->folder)
 850                 return imap_do_copy_msgs_with_dest
 851                         (folder, dest, msglist, FALSE);
 852
 853         for (cur = msglist; cur != NULL; cur = cur->next) {
 854                 msginfo = (MsgInfo *)cur->data;
 855                 ret = imap_copy_msg(folder, dest, msginfo);
 856                 if (ret != 0) break;
 857         }
 858
 859         return ret;
 860 }
 861
 862 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 863 {
 864         gint exists, recent, unseen;
 865         guint32 uid_validity;
 866         gint ok;
 867         IMAPSession *session;
 868
 869         g_return_val_if_fail(folder != NULL, -1);
 870         g_return_val_if_fail(folder->type == F_IMAP, -1);
 871         g_return_val_if_fail(item != NULL, -1);
 872
 873         session = imap_session_get(folder);
 874         if (!session) return -1;
 875
 876         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 877                          &exists, &recent, &unseen, &uid_validity);
 878         statusbar_pop_all();
 879         if (ok != IMAP_SUCCESS)
 880                 return ok;
 881
 882         ok = imap_set_message_flags
 883                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 884                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 885         statusbar_pop_all();
 886         if (ok != IMAP_SUCCESS) {
 887                 log_warning(_("can't set deleted flags: %d\n"), uid);
 888                 return ok;
 889         }
 890
 891         ok = imap_cmd_expunge(SESSION(session)->sock);
 892         statusbar_pop_all();
 893         if (ok != IMAP_SUCCESS) {
 894                 log_warning(_("can't expunge\n"));
 895                 return ok;
 896         }
 897
 898         return IMAP_SUCCESS;
 899 }
 900
 901 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 902 {
 903         gint exists, recent, unseen;
 904         guint32 uid_validity;
 905         gint ok;
 906         IMAPSession *session;
 907
 908         g_return_val_if_fail(folder != NULL, -1);
 909         g_return_val_if_fail(item != NULL, -1);
 910
 911         session = imap_session_get(folder);
 912         if (!session) return -1;
 913
 914         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 915                          &exists, &recent, &unseen, &uid_validity);
 916         statusbar_pop_all();
 917         if (ok != IMAP_SUCCESS)
 918                 return ok;
 919         if (exists == 0)
 920                 return IMAP_SUCCESS;
 921
 922         imap_cmd_gen_send(SESSION(session)->sock,
 923                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 924         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 925         statusbar_pop_all();
 926         if (ok != IMAP_SUCCESS) {
 927                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 928                 return ok;
 929         }
 930
 931         ok = imap_cmd_expunge(SESSION(session)->sock);
 932         statusbar_pop_all();
 933         if (ok != IMAP_SUCCESS) {
 934                 log_warning(_("can't expunge\n"));
 935                 return ok;
 936         }
 937
 938         return IMAP_SUCCESS;
 939 }
 940
 941 gboolean imap_is_msg_changed(Folder *folder, FolderItem *item, MsgInfo *msginfo)
 942 {
 943         /* TODO: properly implement this method */
 944         return FALSE;
 945 }
 946
 947 gint imap_scan_folder(Folder *folder, FolderItem *item)
 948 {
 949         IMAPSession *session;
 950         gint messages, recent, unseen;
 951         guint32 uid_next, uid_validity;
 952         gint ok;
 953
 954         g_return_val_if_fail(folder != NULL, -1);
 955         g_return_val_if_fail(item != NULL, -1);
 956
 957         session = imap_session_get(folder);
 958         if (!session) return -1;
 959
 960         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
 961                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 962         statusbar_pop_all();
 963         if (ok != IMAP_SUCCESS) return -1;
 964
 965         item->new = unseen > 0 ? recent : 0;
 966         item->unread = unseen;
 967         item->total = messages;
 968         item->last_num = (messages > 0 && uid_next > 0) ? uid_next - 1 : 0;
 969         /* item->mtime = uid_validity; */
 970
 971         return 0;
 972 }
 973
 974 void imap_scan_tree(Folder *folder)
 975 {
 976         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 977         FolderItem *item;
 978         IMAPSession *session;
 979         gchar *root_folder = NULL;
 980
 981         g_return_if_fail(folder != NULL);
 982         g_return_if_fail(folder->account != NULL);
 983
 984         session = imap_session_get(folder);
 985         if (!session) return;
 986
 987         if (folder->account->imap_dir && *folder->account->imap_dir) {
 988                 gchar *imap_dir;
 989                 IMAPNameSpace *namespace = NULL;
 990
 991                 Xstrdup_a(imap_dir, folder->account->imap_dir, return);
 992                 strtailchomp(imap_dir, '/');
 993
 994                 if (imapfolder->ns_personal && imapfolder->ns_personal->data)
 995                         namespace = (IMAPNameSpace *)imapfolder->ns_personal->data;
 996                 root_folder = g_strconcat
 997                         (namespace && namespace->name ? namespace->name : "",
 998                          imap_dir, NULL);
 999                 if (namespace && namespace->separator)
1000                         subst_char(root_folder, namespace->separator, '/');
1001         }
1002
1003         if (root_folder)
1004                 debug_print("IMAP root directory: %s\n", root_folder);
1005
1006         folder_tree_destroy(folder);
1007         item = folder_item_new(folder->name, root_folder);
1008         item->folder = folder;
1009         folder->node = g_node_new(item);
1010         g_free(root_folder);
1011
1012         imap_scan_tree_recursive(session, item);
1013
1014         imap_create_missing_folders(folder);
1015 }
1016
1017 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
1018 {
1019         Folder *folder;
1020         IMAPFolder *imapfolder;
1021         FolderItem *new_item;
1022         GSList *item_list, *cur;
1023         gchar *real_path;
1024         gchar *wildcard_path;
1025         gchar separator;
1026         gchar wildcard[3];
1027
1028         g_return_val_if_fail(item != NULL, -1);
1029         g_return_val_if_fail(item->folder != NULL, -1);
1030         g_return_val_if_fail(item->no_sub == FALSE, -1);
1031
1032         folder = FOLDER(item->folder);
1033         imapfolder = IMAP_FOLDER(folder);
1034
1035         separator = imap_get_path_separator(imapfolder, item->path);
1036
1037         if (item->folder->ui_func)
1038                 item->folder->ui_func(folder, item, folder->ui_func_data);
1039
1040         if (item->path) {
1041                 wildcard[0] = separator;
1042                 wildcard[1] = '%';
1043                 wildcard[2] = '\0';
1044                 real_path = imap_get_real_path(imapfolder, item->path);
1045         } else {
1046                 wildcard[0] = '%';
1047                 wildcard[1] = '\0';
1048                 real_path = g_strdup("");
1049         }
1050
1051         Xstrcat_a(wildcard_path, real_path, wildcard,
1052                   {g_free(real_path); return IMAP_ERROR;});
1053         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
1054
1055         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
1056                           wildcard_path);
1057
1058         strtailchomp(real_path, separator);
1059         item_list = imap_parse_list(session, real_path);
1060         g_free(real_path);
1061
1062         for (cur = item_list; cur != NULL; cur = cur->next) {
1063                 new_item = cur->data;
1064                 if (!strcmp(new_item->path, "INBOX")) {
1065                         if (!folder->inbox) {
1066                                 new_item->stype = F_INBOX;
1067                                 item->folder->inbox = new_item;
1068                         } else {
1069                                 folder_item_destroy(new_item);
1070                                 continue;
1071                         }
1072                 } else if (!item->parent || item->stype == F_INBOX) {
1073                         gchar *base;
1074
1075                         base = g_basename(new_item->path);
1076
1077                         if (!folder->outbox && !strcasecmp(base, "Sent")) {
1078                                 new_item->stype = F_OUTBOX;
1079                                 folder->outbox = new_item;
1080                         } else if (!folder->draft && !strcasecmp(base, "Drafts")) {
1081                                 new_item->stype = F_DRAFT;
1082                                 folder->draft = new_item;
1083                         } else if (!folder->queue && !strcasecmp(base, "Queue")) {
1084                                 new_item->stype = F_QUEUE;
1085                                 folder->queue = new_item;
1086                         } else if (!folder->trash && !strcasecmp(base, "Trash")) {
1087                                 new_item->stype = F_TRASH;
1088                                 folder->trash = new_item;
1089                         }
1090                 }
1091                 folder_item_append(item, new_item);
1092                 if (new_item->no_select == FALSE)
1093                         imap_scan_folder(folder, new_item);
1094                 if (new_item->no_sub == FALSE)
1095                         imap_scan_tree_recursive(session, new_item);
1096         }
1097
1098         return IMAP_SUCCESS;
1099 }
1100
1101 static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
1102 {
1103         gchar buf[IMAPBUFSIZE];
1104         gchar flags[256];
1105         gchar separator[16];
1106         gchar *p;
1107         gchar *name;
1108         gchar *loc_name, *loc_path;
1109         GSList *item_list = NULL;
1110         GString *str;
1111         FolderItem *new_item;
1112
1113         debug_print("getting list of %s ...\n",
1114                     *real_path ? real_path : "\"\"");
1115
1116         str = g_string_new(NULL);
1117
1118         for (;;) {
1119                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1120                         log_warning(_("error occured while getting LIST.\n"));
1121                         break;
1122                 }
1123                 strretchomp(buf);
1124                 if (buf[0] != '*' || buf[1] != ' ') {
1125                         log_print("IMAP4< %s\n", buf);
1126                         break;
1127                 }
1128                 debug_print("IMAP4< %s\n", buf);
1129
1130                 g_string_assign(str, buf);
1131                 p = str->str + 2;
1132                 if (strncmp(p, "LIST ", 5) != 0) continue;
1133                 p += 5;
1134
1135                 if (*p != '(') continue;
1136                 p++;
1137                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1138                 if (!p) continue;
1139                 while (*p == ' ') p++;
1140
1141                 p = strchr_cpy(p, ' ', separator, sizeof(separator));
1142                 if (!p) continue;
1143                 extract_quote(separator, '"');
1144                 if (!strcmp(separator, "NIL"))
1145                         separator[0] = '\0';
1146
1147                 buf[0] = '\0';
1148                 while (*p == ' ') p++;
1149                 if (*p == '{' || *p == '"')
1150                         p = imap_parse_atom(SESSION(session)->sock, p,
1151                                             buf, sizeof(buf), str);
1152                 else
1153                         strncpy2(buf, p, sizeof(buf));
1154                 strtailchomp(buf, separator[0]);
1155                 if (buf[0] == '\0') continue;
1156                 if (!strcmp(buf, real_path)) continue;
1157
1158                 if (separator[0] != '\0')
1159                         subst_char(buf, separator[0], '/');
1160                 name = g_basename(buf);
1161                 if (name[0] == '.') continue;
1162
1163                 loc_name = imap_modified_utf7_to_locale(name);
1164                 loc_path = imap_modified_utf7_to_locale(buf);
1165                 new_item = folder_item_new(loc_name, loc_path);
1166                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1167                         new_item->no_sub = TRUE;
1168                 if (strcmp(buf, "INBOX") != 0 &&
1169                     strcasestr(flags, "\\Noselect") != NULL)
1170                         new_item->no_select = TRUE;
1171
1172                 item_list = g_slist_append(item_list, new_item);
1173
1174                 debug_print("folder %s has been added.\n", loc_path);
1175                 g_free(loc_path);
1176                 g_free(loc_name);
1177         }
1178
1179         g_string_free(str, TRUE);
1180         statusbar_pop_all();
1181
1182         return item_list;
1183 }
1184
1185 gint imap_create_tree(Folder *folder)
1186 {
1187         g_return_val_if_fail(folder != NULL, -1);
1188         g_return_val_if_fail(folder->node != NULL, -1);
1189         g_return_val_if_fail(folder->node->data != NULL, -1);
1190         g_return_val_if_fail(folder->account != NULL, -1);
1191
1192         imap_scan_tree(folder);
1193         imap_create_missing_folders(folder);
1194
1195         return 0;
1196 }
1197
1198 static void imap_create_missing_folders(Folder *folder)
1199 {
1200         g_return_if_fail(folder != NULL);
1201
1202         if (!folder->inbox)
1203                 folder->inbox = imap_create_special_folder
1204                         (folder, F_INBOX, "INBOX");
1205 #if 0
1206         if (!folder->outbox)
1207                 folder->outbox = imap_create_special_folder
1208                         (folder, F_OUTBOX, "Sent");
1209         if (!folder->draft)
1210                 folder->draft = imap_create_special_folder
1211                         (folder, F_DRAFT, "Drafts");
1212         if (!folder->queue)
1213                 folder->queue = imap_create_special_folder
1214                         (folder, F_QUEUE, "Queue");
1215 #endif
1216         if (!folder->trash)
1217                 folder->trash = imap_create_special_folder
1218                         (folder, F_TRASH, "Trash");
1219 }
1220
1221 static FolderItem *imap_create_special_folder(Folder *folder,
1222                                               SpecialFolderItemType stype,
1223                                               const gchar *name)
1224 {
1225         FolderItem *item;
1226         FolderItem *new_item;
1227
1228         g_return_val_if_fail(folder != NULL, NULL);
1229         g_return_val_if_fail(folder->node != NULL, NULL);
1230         g_return_val_if_fail(folder->node->data != NULL, NULL);
1231         g_return_val_if_fail(folder->account != NULL, NULL);
1232         g_return_val_if_fail(name != NULL, NULL);
1233
1234         item = FOLDER_ITEM(folder->node->data);
1235         new_item = imap_create_folder(folder, item, name);
1236
1237         if (!new_item) {
1238                 g_warning(_("Can't create '%s'\n"), name);
1239                 if (!folder->inbox) return NULL;
1240
1241                 new_item = imap_create_folder(folder, folder->inbox, name);
1242                 if (!new_item)
1243                         g_warning(_("Can't create '%s' under INBOX\n"), name);
1244                 else
1245                         new_item->stype = stype;
1246         } else
1247                 new_item->stype = stype;
1248
1249         return new_item;
1250 }
1251
1252 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1253                                const gchar *name)
1254 {
1255         gchar *dirpath, *imap_path;
1256         IMAPSession *session;
1257         FolderItem *new_item;
1258         gchar separator;
1259         gchar *new_name;
1260         const gchar *p;
1261         gint ok;
1262
1263         g_return_val_if_fail(folder != NULL, NULL);
1264         g_return_val_if_fail(folder->account != NULL, NULL);
1265         g_return_val_if_fail(parent != NULL, NULL);
1266         g_return_val_if_fail(name != NULL, NULL);
1267
1268         session = imap_session_get(folder);
1269         if (!session) return NULL;
1270
1271         if (!parent->parent && strcmp(name, "INBOX") == 0)
1272                 dirpath = g_strdup(name);
1273         else if (parent->path)
1274                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1275         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1276                 dirpath = g_strdup(name);
1277         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1278                 gchar *imap_dir;
1279
1280                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1281                 strtailchomp(imap_dir, '/');
1282                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1283         } else
1284                 dirpath = g_strdup(name);
1285
1286         strtailchomp(dirpath, '/');
1287         imap_path = imap_locale_to_modified_utf7(dirpath);
1288         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1289         strtailchomp(new_name, '/');
1290         separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
1291         imap_path_separator_subst(imap_path, separator);
1292         subst_char(new_name, '/', separator);
1293
1294         if (strcmp(name, "INBOX") != 0) {
1295                 GPtrArray *argbuf;
1296                 gint i;
1297                 gboolean exist = FALSE;
1298
1299                 argbuf = g_ptr_array_new();
1300                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
1301                                    argbuf);
1302                 statusbar_pop_all();
1303                 if (ok != IMAP_SUCCESS) {
1304                         log_warning(_("can't create mailbox: LIST failed\n"));
1305                         g_free(imap_path);
1306                         g_free(dirpath);
1307                         g_ptr_array_free(argbuf, TRUE);
1308                         return NULL;
1309                 }
1310
1311                 for (i = 0; i < argbuf->len; i++) {
1312                         gchar *str;
1313                         str = g_ptr_array_index(argbuf, i);
1314                         if (!strncmp(str, "LIST ", 5)) {
1315                                 exist = TRUE;
1316                                 break;
1317                         }
1318                 }
1319                 g_ptr_array_free(argbuf, TRUE);
1320
1321                 if (!exist) {
1322                         ok = imap_cmd_create(SESSION(session)->sock, imap_path);
1323                         statusbar_pop_all();
1324                         if (ok != IMAP_SUCCESS) {
1325                                 log_warning(_("can't create mailbox\n"));
1326                                 g_free(imap_path);
1327                                 g_free(dirpath);
1328                                 return NULL;
1329                         }
1330                 }
1331         }
1332
1333         new_item = folder_item_new(new_name, dirpath);
1334         folder_item_append(parent, new_item);
1335         g_free(imap_path);
1336         g_free(dirpath);
1337
1338         dirpath = folder_item_get_path(new_item);
1339         if (!is_dir_exist(dirpath))
1340                 make_dir_hier(dirpath);
1341         g_free(dirpath);
1342
1343         return new_item;
1344 }
1345
1346 gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
1347 {
1348         gchar *dirpath;
1349         gchar *newpath;
1350         gchar *real_oldpath;
1351         gchar *real_newpath;
1352         GNode *node;
1353         gchar *paths[2];
1354         gchar *old_cache_dir;
1355         gchar *new_cache_dir;
1356         IMAPSession *session;
1357         gchar separator;
1358         gint ok;
1359         gint exists, recent, unseen;
1360         guint32 uid_validity;
1361
1362         g_return_val_if_fail(folder != NULL, -1);
1363         g_return_val_if_fail(item != NULL, -1);
1364         g_return_val_if_fail(item->path != NULL, -1);
1365         g_return_val_if_fail(name != NULL, -1);
1366
1367         session = imap_session_get(folder);
1368         if (!session) return -1;
1369
1370         real_oldpath = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1371
1372         g_free(session->mbox);
1373         session->mbox = NULL;
1374         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1375                               &exists, &recent, &unseen, &uid_validity);
1376         statusbar_pop_all();
1377         if (ok != IMAP_SUCCESS) {
1378                 g_free(real_oldpath);
1379                 return -1;
1380         }
1381
1382         separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
1383         if (strchr(item->path, G_DIR_SEPARATOR)) {
1384                 dirpath = g_dirname(item->path);
1385                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
1386                 g_free(dirpath);
1387         } else
1388                 newpath = g_strdup(name);
1389
1390         real_newpath = imap_locale_to_modified_utf7(newpath);
1391         imap_path_separator_subst(real_newpath, separator);
1392
1393         ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
1394         statusbar_pop_all();
1395         if (ok != IMAP_SUCCESS) {
1396                 log_warning(_("can't rename mailbox: %s to %s\n"),
1397                             real_oldpath, real_newpath);
1398                 g_free(real_oldpath);
1399                 g_free(newpath);
1400                 g_free(real_newpath);
1401                 return -1;
1402         }
1403
1404         g_free(item->name);
1405         item->name = g_strdup(name);
1406
1407         old_cache_dir = folder_item_get_path(item);
1408
1409         node = g_node_find(item->folder->node, G_PRE_ORDER, G_TRAVERSE_ALL,
1410                            item);
1411         paths[0] = g_strdup(item->path);
1412         paths[1] = newpath;
1413         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1414                         imap_rename_folder_func, paths);
1415
1416         if (is_dir_exist(old_cache_dir)) {
1417                 new_cache_dir = folder_item_get_path(item);
1418                 if (rename(old_cache_dir, new_cache_dir) < 0) {
1419                         FILE_OP_ERROR(old_cache_dir, "rename");
1420                 }
1421                 g_free(new_cache_dir);
1422         }
1423
1424         g_free(old_cache_dir);
1425         g_free(paths[0]);
1426         g_free(newpath);
1427         g_free(real_oldpath);
1428         g_free(real_newpath);
1429
1430         return 0;
1431 }
1432
1433 gint imap_remove_folder(Folder *folder, FolderItem *item)
1434 {
1435         gint ok;
1436         IMAPSession *session;
1437         gchar *path;
1438         gchar *cache_dir;
1439         gint exists, recent, unseen;
1440         guint32 uid_validity;
1441
1442         g_return_val_if_fail(folder != NULL, -1);
1443         g_return_val_if_fail(item != NULL, -1);
1444         g_return_val_if_fail(item->path != NULL, -1);
1445
1446         session = imap_session_get(folder);
1447         if (!session) return -1;
1448
1449         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1450
1451         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1452                               &exists, &recent, &unseen, &uid_validity);
1453         statusbar_pop_all();
1454         if (ok != IMAP_SUCCESS) {
1455                 g_free(path);
1456                 return -1;
1457         }
1458
1459         ok = imap_cmd_delete(SESSION(session)->sock, path);
1460         statusbar_pop_all();
1461         if (ok != IMAP_SUCCESS) {
1462                 log_warning(_("can't delete mailbox\n"));
1463                 g_free(path);
1464                 return -1;
1465         }
1466
1467         g_free(path);
1468         cache_dir = folder_item_get_path(item);
1469         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
1470                 g_warning("can't remove directory '%s'\n", cache_dir);
1471         g_free(cache_dir);
1472         folder_item_remove(item);
1473
1474         return 0;
1475 }
1476
1477 static GSList *imap_get_uncached_messages(IMAPSession *session,
1478                                           FolderItem *item,
1479                                           guint32 first_uid, guint32 last_uid)
1480 {
1481         gchar *tmp;
1482         GSList *newlist = NULL;
1483         GSList *llast = NULL;
1484         GString *str;
1485         MsgInfo *msginfo;
1486
1487         g_return_val_if_fail(session != NULL, NULL);
1488         g_return_val_if_fail(item != NULL, NULL);
1489         g_return_val_if_fail(item->folder != NULL, NULL);
1490         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1491         g_return_val_if_fail(first_uid <= last_uid, NULL);
1492
1493         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1494             != IMAP_SUCCESS) {
1495                 log_warning(_("can't get envelope\n"));
1496                 return NULL;
1497         }
1498
1499         str = g_string_new(NULL);
1500
1501         for (;;) {
1502                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1503                         log_warning(_("error occurred while getting envelope.\n"));
1504                         g_string_free(str, TRUE);
1505                         return newlist;
1506                 }
1507                 strretchomp(tmp);
1508                 if (tmp[0] != '*' || tmp[1] != ' ') {
1509                         log_print("IMAP4< %s\n", tmp);
1510                         g_free(tmp);
1511                         break;
1512                 }
1513                 if (strstr(tmp, "FETCH") == NULL) {
1514                         log_print("IMAP4< %s\n", tmp);
1515                         g_free(tmp);
1516                         continue;
1517                 }
1518                 /* log_print("IMAP4< %s\n", tmp); */
1519                 debug_print("IMAP4< %s\n", tmp);
1520                 g_string_assign(str, tmp);
1521                 g_free(tmp);
1522
1523                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
1524                 if (!msginfo) {
1525                         log_warning(_("can't parse envelope: %s\n"), str->str);
1526                         continue;
1527                 }
1528                 if (item->stype == F_QUEUE) {
1529                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_QUEUED);
1530                 } else if (item->stype == F_DRAFT) {
1531                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_DRAFT);
1532                 }
1533
1534                 msginfo->folder = item;
1535
1536                 if (!newlist)
1537                         llast = newlist = g_slist_append(newlist, msginfo);
1538                 else {
1539                         llast = g_slist_append(llast, msginfo);
1540                         llast = llast->next;
1541                 }
1542         }
1543
1544         g_string_free(str, TRUE);
1545
1546         return newlist;
1547 }
1548
1549 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
1550                                            guint32 first_uid, guint32 last_uid)
1551 {
1552         GSList *cur, *next;
1553         MsgInfo *msginfo;
1554         gchar *dir;
1555
1556         g_return_val_if_fail(item != NULL, mlist);
1557         g_return_val_if_fail(item->folder != NULL, mlist);
1558         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
1559
1560         debug_print(_("Deleting cached messages %d - %d ... "),
1561                     first_uid, last_uid);
1562
1563         dir = folder_item_get_path(item);
1564         remove_numbered_files(dir, first_uid, last_uid);
1565         g_free(dir);
1566
1567         for (cur = mlist; cur != NULL; ) {
1568                 next = cur->next;
1569
1570                 msginfo = (MsgInfo *)cur->data;
1571                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
1572                     msginfo->msgnum <= last_uid) {
1573                         procmsg_msginfo_free(msginfo);
1574                         mlist = g_slist_remove(mlist, msginfo);
1575                 }
1576
1577                 cur = next;
1578         }
1579
1580         debug_print(_("done.\n"));
1581
1582         return mlist;
1583 }
1584
1585 static void imap_delete_all_cached_messages(FolderItem *item)
1586 {
1587         gchar *dir;
1588
1589         g_return_if_fail(item != NULL);
1590         g_return_if_fail(item->folder != NULL);
1591         g_return_if_fail(item->folder->type == F_IMAP);
1592
1593         debug_print(_("Deleting all cached messages... "));
1594
1595         dir = folder_item_get_path(item);
1596         remove_all_numbered_files(dir);
1597         g_free(dir);
1598
1599         debug_print(_("done.\n"));
1600 }
1601
1602
1603 static SockInfo *imap_open_tunnel(const gchar *server,
1604                            const gchar *tunnelcmd)
1605 {
1606         SockInfo *sock;
1607
1608         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1609                 log_warning(_("Can't establish IMAP4 session with: %s\n"),
1610                             server);
1611                 return NULL;
1612
1613         return imap_init_sock(sock);
1614 }
1615
1616
1617 #if USE_SSL
1618 static SockInfo *imap_open(const gchar *server, gushort port,
1619                            gboolean use_ssl)
1620 #else
1621 static SockInfo *imap_open(const gchar *server, gushort port)
1622 #endif
1623 {
1624         SockInfo *sock;
1625
1626         if ((sock = sock_connect(server, port)) == NULL) {
1627                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1628                             server, port);
1629                 return NULL;
1630         }
1631
1632 #if USE_SSL
1633         if (use_ssl && !ssl_init_socket(sock)) {
1634                 log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
1635                             server, port);
1636                 sock_close(sock);
1637                 return NULL;
1638         }
1639 #endif
1640
1641         return imap_init_sock(sock);
1642 }
1643
1644
1645 static SockInfo *imap_init_sock(SockInfo *sock)
1646 {
1647         imap_cmd_count = 0;
1648
1649         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1650                 log_warning(_("Can't establish IMAP4 session\n"));
1651                 sock_close(sock);
1652                 return NULL;
1653         }
1654
1655         return sock;
1656 }
1657
1658 static GList *imap_parse_namespace_str(gchar *str)
1659 {
1660         gchar *p = str;
1661         gchar *name;
1662         gchar *separator;
1663         IMAPNameSpace *namespace;
1664         GList *ns_list = NULL;
1665
1666         while (*p != '\0') {
1667                 /* parse ("#foo" "/") */
1668
1669                 while (*p && *p != '(') p++;
1670                 if (*p == '\0') break;
1671                 p++;
1672
1673                 while (*p && *p != '"') p++;
1674                 if (*p == '\0') break;
1675                 p++;
1676                 name = p;
1677
1678                 while (*p && *p != '"') p++;
1679                 if (*p == '\0') break;
1680                 *p = '\0';
1681                 p++;
1682
1683                 while (*p && isspace(*p)) p++;
1684                 if (*p == '\0') break;
1685                 if (strncmp(p, "NIL", 3) == 0)
1686                         separator = NULL;
1687                 else if (*p == '"') {
1688                         p++;
1689                         separator = p;
1690                         while (*p && *p != '"') p++;
1691                         if (*p == '\0') break;
1692                         *p = '\0';
1693                         p++;
1694                 } else break;
1695
1696                 while (*p && *p != ')') p++;
1697                 if (*p == '\0') break;
1698                 p++;
1699
1700                 namespace = g_new(IMAPNameSpace, 1);
1701                 namespace->name = g_strdup(name);
1702                 namespace->separator = separator ? separator[0] : '\0';
1703                 ns_list = g_list_append(ns_list, namespace);
1704         }
1705
1706         return ns_list;
1707 }
1708
1709 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1710 {
1711         gchar *ns_str;
1712         gchar **str_array;
1713
1714         g_return_if_fail(session != NULL);
1715         g_return_if_fail(folder != NULL);
1716
1717         if (folder->ns_personal != NULL ||
1718             folder->ns_others   != NULL ||
1719             folder->ns_shared   != NULL)
1720                 return;
1721
1722         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1723             != IMAP_SUCCESS) {
1724                 log_warning(_("can't get namespace\n"));
1725                 return;
1726         }
1727
1728         str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
1729         if (str_array[0])
1730                 folder->ns_personal = imap_parse_namespace_str(str_array[0]);
1731         if (str_array[0] && str_array[1])
1732                 folder->ns_others = imap_parse_namespace_str(str_array[1]);
1733         if (str_array[0] && str_array[1] && str_array[2])
1734                 folder->ns_shared = imap_parse_namespace_str(str_array[2]);
1735         g_strfreev(str_array);
1736         return;
1737 }
1738
1739 static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
1740                                                     const gchar *path)
1741 {
1742         IMAPNameSpace *namespace = NULL;
1743         gchar *tmp_path, *name;
1744
1745         if (!path) path = "";
1746
1747         Xstrcat_a(tmp_path, path, "/", return NULL);
1748
1749         for (; ns_list != NULL; ns_list = ns_list->next) {
1750                 IMAPNameSpace *tmp_ns = ns_list->data;
1751
1752                 Xstrdup_a(name, tmp_ns->name, return namespace);
1753                 if (tmp_ns->separator && tmp_ns->separator != '/')
1754                         subst_char(name, tmp_ns->separator, '/');
1755                 if (strncmp(tmp_path, name, strlen(name)) == 0)
1756                         namespace = tmp_ns;
1757         }
1758
1759         return namespace;
1760 }
1761
1762 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1763                                           const gchar *path)
1764 {
1765         IMAPNameSpace *namespace;
1766
1767         g_return_val_if_fail(folder != NULL, NULL);
1768
1769         namespace = imap_find_namespace_from_list(folder->ns_personal, path);
1770         if (namespace) return namespace;
1771         namespace = imap_find_namespace_from_list(folder->ns_others, path);
1772         if (namespace) return namespace;
1773         namespace = imap_find_namespace_from_list(folder->ns_shared, path);
1774         if (namespace) return namespace;
1775
1776         return NULL;
1777 }
1778
1779 static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
1780 {
1781         IMAPNameSpace *namespace;
1782         gchar separator = '/';
1783
1784         namespace = imap_find_namespace(folder, path);
1785         if (namespace && namespace->separator)
1786                 separator = namespace->separator;
1787
1788         return separator;
1789 }
1790
1791 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1792 {
1793         gchar *real_path;
1794         gchar separator;
1795
1796         g_return_val_if_fail(folder != NULL, NULL);
1797         g_return_val_if_fail(path != NULL, NULL);
1798
1799         real_path = imap_locale_to_modified_utf7(path);
1800         separator = imap_get_path_separator(folder, path);
1801         imap_path_separator_subst(real_path, separator);
1802
1803         return real_path;
1804 }
1805
1806 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1807                               gchar *dest, gint dest_len, GString *str)
1808 {
1809         gchar *cur_pos = src;
1810         gchar *nextline;
1811
1812         g_return_val_if_fail(str != NULL, cur_pos);
1813
1814         /* read the next line if the current response buffer is empty */
1815         while (isspace(*cur_pos)) cur_pos++;
1816         while (*cur_pos == '\0') {
1817                 if ((nextline = sock_getline(sock)) == NULL)
1818                         return cur_pos;
1819                 g_string_assign(str, nextline);
1820                 cur_pos = str->str;
1821                 strretchomp(nextline);
1822                 /* log_print("IMAP4< %s\n", nextline); */
1823                 debug_print("IMAP4< %s\n", nextline);
1824                 g_free(nextline);
1825
1826                 while (isspace(*cur_pos)) cur_pos++;
1827         }
1828
1829         if (!strncmp(cur_pos, "NIL", 3)) {
1830                 *dest = '\0';
1831                 cur_pos += 3;
1832         } else if (*cur_pos == '\"') {
1833                 gchar *p;
1834
1835                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1836                 cur_pos = p ? p : cur_pos + 2;
1837         } else if (*cur_pos == '{') {
1838                 gchar buf[32];
1839                 gint len;
1840                 gint line_len = 0;
1841
1842                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1843                 len = atoi(buf);
1844
1845                 g_string_truncate(str, 0);
1846                 cur_pos = str->str;
1847
1848                 do {
1849                         if ((nextline = sock_getline(sock)) == NULL)
1850                                 return cur_pos;
1851                         line_len += strlen(nextline);
1852                         g_string_append(str, nextline);
1853                         cur_pos = str->str;
1854                         strretchomp(nextline);
1855                         /* log_print("IMAP4< %s\n", nextline); */
1856                         debug_print("IMAP4< %s\n", nextline);
1857                         g_free(nextline);
1858                 } while (line_len < len);
1859
1860                 memcpy(dest, cur_pos, MIN(len, dest_len - 1));
1861                 dest[MIN(len, dest_len - 1)] = '\0';
1862                 cur_pos += len;
1863         }
1864
1865         return cur_pos;
1866 }
1867
1868 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1869                                      gchar *out_from_str,
1870                                      gchar *out_fromname_str,
1871                                      GString *str)
1872 {
1873         gchar buf[IMAPBUFSIZE];
1874         gchar *userid;
1875         gchar *domain;
1876         gchar *cur_pos = start;
1877
1878         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1879         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1880
1881         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1882
1883         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1884         Xstrdup_a(userid, buf, return cur_pos + 1);
1885
1886         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1887         Xstrdup_a(domain, buf, return cur_pos + 1);
1888
1889         if (out_fromname_str[0] != '\0') {
1890                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1891                            out_fromname_str, userid, domain);
1892         } else {
1893                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1894                            userid, domain);
1895                 strcpy(out_fromname_str, out_from_str);
1896         }
1897
1898         while (*cur_pos == ' ') cur_pos++;
1899         g_return_val_if_fail(*cur_pos == ')', NULL);
1900
1901         return cur_pos + 1;
1902 }
1903
1904 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1905                                  gchar **out_from_str,
1906                                  gchar **out_fromname_str,
1907                                  GString *str)
1908 {
1909         gchar buf[IMAPBUFSIZE];
1910         gchar name_buf[IMAPBUFSIZE];
1911         gchar *cur_pos = start;
1912         GString *addr_str;
1913
1914         if (out_from_str)     *out_from_str     = NULL;
1915         if (out_fromname_str) *out_fromname_str = NULL;
1916         buf[0] = name_buf[0] = '\0';
1917
1918         if (!strncmp(cur_pos, "NIL", 3)) {
1919                 if (out_from_str)     *out_from_str     = g_strdup("");
1920                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1921                 return cur_pos + 3;
1922         }
1923
1924         g_return_val_if_fail(*cur_pos == '(', NULL);
1925         cur_pos++;
1926
1927         addr_str = g_string_new(NULL);
1928
1929         for (;;) {
1930                 gchar ch = *cur_pos++;
1931                 if (ch == ')') break;
1932                 if (ch == '(') {
1933                         cur_pos = imap_parse_one_address
1934                                 (sock, cur_pos, buf, name_buf, str);
1935                         if (!cur_pos) {
1936                                 g_string_free(addr_str, TRUE);
1937                                 return NULL;
1938                         }
1939                         if (addr_str->str[0] != '\0')
1940                                 g_string_append(addr_str, ", ");
1941                         g_string_append(addr_str, buf);
1942                 }
1943         }
1944
1945         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1946         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1947
1948         g_string_free(addr_str, TRUE);
1949
1950         return cur_pos;
1951 }
1952
1953 static MsgFlags imap_parse_flags(const gchar *flag_str)
1954 {
1955         const gchar *p = flag_str;
1956         MsgFlags flags;
1957
1958         flags.perm_flags = MSG_UNREAD;
1959         flags.tmp_flags  = MSG_IMAP;
1960
1961         while ((p = strchr(p, '\\')) != NULL) {
1962                 p++;
1963
1964                 if (g_strncasecmp(p, "Recent", 6) == 0 && MSG_IS_UNREAD(flags)) {
1965                         MSG_SET_PERM_FLAGS(flags, MSG_NEW);
1966                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
1967                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1968                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
1969                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
1970                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
1971                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
1972                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
1973                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
1974                 }
1975         }
1976
1977         return flags;
1978 }
1979
1980 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
1981 {
1982         MsgInfo *msginfo;
1983         gchar buf[IMAPBUFSIZE];
1984         gchar tmp[IMAPBUFSIZE];
1985         gchar *cur_pos;
1986         gint msgnum;
1987         guint32 uid = 0;
1988         size_t size = 0;
1989         gchar *date = NULL;
1990         time_t date_t = 0;
1991         gchar *subject = NULL;
1992         gchar *tmp_from;
1993         gchar *tmp_fromname;
1994         gchar *from = NULL;
1995         gchar *fromname = NULL;
1996         gchar *tmp_to;
1997         gchar *to = NULL;
1998         gchar *inreplyto = NULL;
1999         gchar *msgid = NULL;
2000         MsgFlags flags = {0, 0};
2001
2002         g_return_val_if_fail(line_str != NULL, NULL);
2003         g_return_val_if_fail(line_str->str[0] == '*' &&
2004                              line_str->str[1] == ' ', NULL);
2005
2006         cur_pos = line_str->str + 2;
2007
2008 #define PARSE_ONE_ELEMENT(ch) \
2009 { \
2010         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
2011         g_return_val_if_fail(cur_pos != NULL, NULL); \
2012 }
2013
2014         PARSE_ONE_ELEMENT(' ');
2015         msgnum = atoi(buf);
2016
2017         PARSE_ONE_ELEMENT(' ');
2018         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
2019
2020         g_return_val_if_fail(*cur_pos == '(', NULL);
2021         cur_pos++;
2022
2023         while (*cur_pos != '\0' && *cur_pos != ')') {
2024                 while (*cur_pos == ' ') cur_pos++;
2025
2026                 if (!strncmp(cur_pos, "UID ", 4)) {
2027                         cur_pos += 4;
2028                         uid = strtoul(cur_pos, &cur_pos, 10);
2029                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
2030                         cur_pos += 6;
2031                         g_return_val_if_fail(*cur_pos == '(', NULL);
2032                         cur_pos++;
2033                         PARSE_ONE_ELEMENT(')');
2034                         flags = imap_parse_flags(buf);
2035                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
2036                         cur_pos += 12;
2037                         size = strtol(cur_pos, &cur_pos, 10);
2038                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
2039                         cur_pos += 9;
2040                         g_return_val_if_fail(*cur_pos == '(', NULL);
2041                         cur_pos = imap_parse_atom
2042                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
2043                         if (buf[0] != '\0') {
2044                                 Xstrdup_a(date, buf, return NULL);
2045                                 date_t = procheader_date_parse(NULL, date, 0);
2046                         }
2047
2048                         cur_pos = imap_parse_atom
2049                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2050                         if (buf[0] != '\0') {
2051                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
2052                                 Xstrdup_a(subject, tmp, return NULL);
2053                         }
2054
2055                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2056                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2057                                                      &tmp_from, &tmp_fromname,
2058                                                      line_str);
2059                         g_return_val_if_fail(cur_pos != NULL, NULL);
2060                         if (tmp_from && *tmp_from != '\0')
2061                                 Xstrdup_a(from, tmp_from,
2062                                           {g_free(tmp_from);
2063                                            g_free(tmp_fromname);
2064                                            return NULL;});
2065                         if (tmp_fromname && *tmp_fromname != '\0')
2066                                 Xstrdup_a(fromname, tmp_fromname,
2067                                           {g_free(tmp_from);
2068                                            g_free(tmp_fromname);
2069                                            return NULL;});
2070                         g_free(tmp_from);
2071                         g_free(tmp_fromname);
2072
2073 #define SKIP_ONE_ELEMENT() \
2074 { \
2075         g_return_val_if_fail(*cur_pos == ' ', NULL); \
2076         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
2077                                      line_str); \
2078         g_return_val_if_fail(cur_pos != NULL, NULL); \
2079 }
2080
2081                         /* skip sender and reply-to */
2082                         SKIP_ONE_ELEMENT();
2083                         SKIP_ONE_ELEMENT();
2084
2085                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2086                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2087                                                      &tmp_to, NULL, line_str);
2088                         g_return_val_if_fail(cur_pos != NULL, NULL);
2089                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
2090                         g_free(tmp_to);
2091
2092                         /* skip Cc and Bcc */
2093                         SKIP_ONE_ELEMENT();
2094                         SKIP_ONE_ELEMENT();
2095
2096 #undef SKIP_ONE_ELEMENT
2097
2098                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2099                         cur_pos = imap_parse_atom
2100                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2101                         g_return_val_if_fail(cur_pos != NULL, NULL);
2102                         if (buf[0] != '\0') {
2103                                 eliminate_parenthesis(buf, '(', ')');
2104                                 extract_parenthesis(buf, '<', '>');
2105                                 remove_space(buf);
2106                                 Xstrdup_a(inreplyto, buf, return NULL);
2107                         }
2108
2109                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2110                         cur_pos = imap_parse_atom
2111                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2112                         g_return_val_if_fail(cur_pos != NULL, NULL);
2113                         if (buf[0] != '\0') {
2114                                 extract_parenthesis(buf, '<', '>');
2115                                 remove_space(buf);
2116                                 Xstrdup_a(msgid, buf, return NULL);
2117                         }
2118
2119                         g_return_val_if_fail(*cur_pos == ')', NULL);
2120                         cur_pos++;
2121                 } else {
2122                         g_warning("invalid FETCH response: %s\n", cur_pos);
2123                         break;
2124                 }
2125         }
2126
2127         msginfo = g_new0(MsgInfo, 1);
2128         msginfo->msgnum = uid;
2129         msginfo->size = size;
2130         msginfo->date = g_strdup(date);
2131         msginfo->date_t = date_t;
2132         msginfo->subject = g_strdup(subject);
2133         msginfo->from = g_strdup(from);
2134         msginfo->fromname = g_strdup(fromname);
2135         msginfo->to = g_strdup(to);
2136         msginfo->inreplyto = g_strdup(inreplyto);
2137         msginfo->msgid = g_strdup(msgid);
2138         msginfo->flags = flags;
2139
2140         return msginfo;
2141 }
2142
2143 gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2144 {
2145         Folder *folder;
2146         IMAPSession *session;
2147         IMAPFlags iflags = 0;
2148         gint ok = IMAP_SUCCESS;
2149
2150         g_return_val_if_fail(msginfo != NULL, -1);
2151         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
2152         g_return_val_if_fail(msginfo->folder != NULL, -1);
2153         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2154
2155         folder = msginfo->folder->folder;
2156         g_return_val_if_fail(folder->type == F_IMAP, -1);
2157
2158         session = imap_session_get(folder);
2159         if (!session) return -1;
2160
2161         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2162         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2163         if (iflags) {
2164                 ok = imap_set_message_flags(session, msginfo->msgnum,
2165                                             msginfo->msgnum, iflags, TRUE);
2166                 if (ok != IMAP_SUCCESS) return ok;
2167         }
2168
2169         if (flags & MSG_UNREAD)
2170                 ok = imap_set_message_flags(session, msginfo->msgnum,
2171                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2172                                             FALSE);
2173         return ok;
2174 }
2175
2176 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2177 {
2178         Folder *folder;
2179         IMAPSession *session;
2180         IMAPFlags iflags = 0;
2181         gint ok = IMAP_SUCCESS;
2182
2183         g_return_val_if_fail(msginfo != NULL, -1);
2184         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
2185         g_return_val_if_fail(msginfo->folder != NULL, -1);
2186         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2187
2188         folder = msginfo->folder->folder;
2189         g_return_val_if_fail(folder->type == F_IMAP, -1);
2190
2191         session = imap_session_get(folder);
2192         if (!session) return -1;
2193
2194         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2195         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2196         if (iflags) {
2197                 ok = imap_set_message_flags(session, msginfo->msgnum,
2198                                             msginfo->msgnum, iflags, FALSE);
2199                 if (ok != IMAP_SUCCESS) return ok;
2200         }
2201
2202         if (flags & MSG_UNREAD)
2203                 ok = imap_set_message_flags(session, msginfo->msgnum,
2204                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2205                                             TRUE);
2206         return ok;
2207 }
2208
2209 static gint imap_set_message_flags(IMAPSession *session,
2210                                    guint32 first_uid,
2211                                    guint32 last_uid,
2212                                    IMAPFlags flags,
2213                                    gboolean is_set)
2214 {
2215         GString *buf;
2216         gint ok;
2217
2218         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
2219
2220         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
2221         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
2222         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
2223         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
2224         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
2225
2226         if (buf->str[buf->len - 1] == ' ')
2227                 g_string_truncate(buf, buf->len - 1);
2228
2229         g_string_append_c(buf, ')');
2230
2231         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
2232                             buf->str);
2233         g_string_free(buf, TRUE);
2234
2235         return ok;
2236 }
2237
2238 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
2239                         const gchar *path,
2240                         gint *exists, gint *recent, gint *unseen,
2241                         guint32 *uid_validity)
2242 {
2243         gchar *real_path;
2244         gint ok;
2245         gint exists_, recent_, unseen_, uid_validity_;
2246
2247         if (!exists || !recent || !unseen || !uid_validity) {
2248                 if (session->mbox && strcmp(session->mbox, path) == 0)
2249                         return IMAP_SUCCESS;
2250                 exists = &exists_;
2251                 recent = &recent_;
2252                 unseen = &unseen_;
2253                 uid_validity = &uid_validity_;
2254         }
2255
2256         g_free(session->mbox);
2257         session->mbox = NULL;
2258
2259         real_path = imap_get_real_path(folder, path);
2260         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2261                              exists, recent, unseen, uid_validity);
2262         if (ok != IMAP_SUCCESS)
2263                 log_warning(_("can't select folder: %s\n"), real_path);
2264         else
2265                 session->mbox = g_strdup(path);
2266         g_free(real_path);
2267
2268         return ok;
2269 }
2270
2271 #define THROW(err) { ok = err; goto catch; }
2272
2273 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
2274 {
2275         gint ok;
2276         GPtrArray *argbuf;
2277         gchar *str;
2278         gint num;
2279
2280         *uid = 0;
2281         argbuf = g_ptr_array_new();
2282
2283         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
2284         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
2285                 THROW(ok);
2286
2287         str = search_array_contain_str(argbuf, "FETCH");
2288         if (!str) THROW(IMAP_ERROR);
2289
2290         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
2291             num != msgnum) {
2292                 g_warning("imap_get_uid(): invalid FETCH line.\n");
2293                 THROW(IMAP_ERROR);
2294         }
2295
2296 catch:
2297         ptr_array_free_strings(argbuf);
2298         g_ptr_array_free(argbuf, TRUE);
2299
2300         return ok;
2301 }
2302
2303 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2304                         const gchar *path,
2305                         gint *messages, gint *recent,
2306                         guint32 *uid_next, guint32 *uid_validity,
2307                         gint *unseen)
2308 {
2309         gchar *real_path;
2310         gchar *real_path_;
2311         gint ok;
2312         GPtrArray *argbuf;
2313         gchar *str;
2314
2315         *messages = *recent = *uid_next = *uid_validity = *unseen = 0;
2316
2317         argbuf = g_ptr_array_new();
2318
2319         real_path = imap_get_real_path(folder, path);
2320         QUOTE_IF_REQUIRED(real_path_, real_path);
2321         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2322                           "(MESSAGES RECENT UIDNEXT UIDVALIDITY UNSEEN)",
2323                           real_path_);
2324
2325         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2326         if (ok != IMAP_SUCCESS) THROW(ok);
2327
2328         str = search_array_str(argbuf, "STATUS");
2329         if (!str) THROW(IMAP_ERROR);
2330
2331         str = strchr(str, '(');
2332         if (!str) THROW(IMAP_ERROR);
2333         str++;
2334         while (*str != '\0' && *str != ')') {
2335                 while (*str == ' ') str++;
2336
2337                 if (!strncmp(str, "MESSAGES ", 9)) {
2338                         str += 9;
2339                         *messages = strtol(str, &str, 10);
2340                 } else if (!strncmp(str, "RECENT ", 7)) {
2341                         str += 7;
2342                         *recent = strtol(str, &str, 10);
2343                 } else if (!strncmp(str, "UIDNEXT ", 8)) {
2344                         str += 8;
2345                         *uid_next = strtoul(str, &str, 10);
2346                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2347                         str += 12;
2348                         *uid_validity = strtoul(str, &str, 10);
2349                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2350                         str += 7;
2351                         *unseen = strtol(str, &str, 10);
2352                 } else {
2353                         g_warning("invalid STATUS response: %s\n", str);
2354                         break;
2355                 }
2356         }
2357
2358 catch:
2359         g_free(real_path);
2360         ptr_array_free_strings(argbuf);
2361         g_ptr_array_free(argbuf, TRUE);
2362
2363         return ok;
2364 }
2365
2366 #undef THROW
2367
2368
2369 /* low-level IMAP4rev1 commands */
2370
2371 static gint imap_cmd_login(SockInfo *sock,
2372                            const gchar *user, const gchar *pass)
2373 {
2374         gchar *user_, *pass_;
2375         gint ok;
2376
2377         QUOTE_IF_REQUIRED(user_, user);
2378         QUOTE_IF_REQUIRED(pass_, pass);
2379         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2380
2381         ok = imap_cmd_ok(sock, NULL);
2382         if (ok != IMAP_SUCCESS)
2383                 log_warning(_("IMAP4 login failed.\n"));
2384
2385         return ok;
2386 }
2387
2388 static gint imap_cmd_logout(SockInfo *sock)
2389 {
2390         imap_cmd_gen_send(sock, "LOGOUT");
2391         return imap_cmd_ok(sock, NULL);
2392 }
2393
2394 /* Send a NOOP, and examine the server's response to see whether this
2395  * connection is pre-authenticated or not. */
2396 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2397 {
2398         GPtrArray *argbuf;
2399         gint r;
2400
2401         imap_cmd_gen_send(sock, "NOOP");
2402         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2403         r = imap_cmd_ok(sock, argbuf);
2404         *is_preauth = search_array_starts(argbuf, "PREAUTH") != NULL;
2405
2406         return r;
2407 }
2408
2409 static gint imap_cmd_noop(SockInfo *sock)
2410 {
2411         imap_cmd_gen_send(sock, "NOOP");
2412         return imap_cmd_ok(sock, NULL);
2413 }
2414
2415 #define THROW(err) { ok = err; goto catch; }
2416
2417 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2418 {
2419         gint ok;
2420         GPtrArray *argbuf;
2421         gchar *str;
2422
2423         argbuf = g_ptr_array_new();
2424
2425         imap_cmd_gen_send(sock, "NAMESPACE");
2426         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2427
2428         str = search_array_str(argbuf, "NAMESPACE");
2429         if (!str) THROW(IMAP_ERROR);
2430
2431         *ns_str = g_strdup(str);
2432
2433 catch:
2434         ptr_array_free_strings(argbuf);
2435         g_ptr_array_free(argbuf, TRUE);
2436
2437         return ok;
2438 }
2439
2440 #undef THROW
2441
2442 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2443                           const gchar *mailbox, GPtrArray *argbuf)
2444 {
2445         gchar *ref_, *mailbox_;
2446
2447         if (!ref) ref = "\"\"";
2448         if (!mailbox) mailbox = "\"\"";
2449
2450         QUOTE_IF_REQUIRED(ref_, ref);
2451         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2452         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2453
2454         return imap_cmd_ok(sock, argbuf);
2455 }
2456
2457 #define THROW goto catch
2458
2459 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2460                                gboolean examine,
2461                                gint *exists, gint *recent, gint *unseen,
2462                                guint32 *uid_validity)
2463 {
2464         gint ok;
2465         gchar *resp_str;
2466         GPtrArray *argbuf;
2467         gchar *select_cmd;
2468         gchar *folder_;
2469
2470         *exists = *recent = *unseen = *uid_validity = 0;
2471         argbuf = g_ptr_array_new();
2472
2473         if (examine)
2474                 select_cmd = "EXAMINE";
2475         else
2476                 select_cmd = "SELECT";
2477
2478         QUOTE_IF_REQUIRED(folder_, folder);
2479         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2480
2481         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2482
2483         resp_str = search_array_contain_str(argbuf, "EXISTS");
2484         if (resp_str) {
2485                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2486                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2487                         THROW;
2488                 }
2489         }
2490
2491         resp_str = search_array_contain_str(argbuf, "RECENT");
2492         if (resp_str) {
2493                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2494                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2495                         THROW;
2496                 }
2497         }
2498
2499         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2500         if (resp_str) {
2501                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2502                     != 1) {
2503                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2504                         THROW;
2505                 }
2506         }
2507
2508         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2509         if (resp_str) {
2510                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2511                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2512                         THROW;
2513                 }
2514         }
2515
2516 catch:
2517         ptr_array_free_strings(argbuf);
2518         g_ptr_array_free(argbuf, TRUE);
2519
2520         return ok;
2521 }
2522
2523 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2524                             gint *exists, gint *recent, gint *unseen,
2525                             guint32 *uid_validity)
2526 {
2527         return imap_cmd_do_select(sock, folder, FALSE,
2528                                   exists, recent, unseen, uid_validity);
2529 }
2530
2531 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2532                              gint *exists, gint *recent, gint *unseen,
2533                              guint32 *uid_validity)
2534 {
2535         return imap_cmd_do_select(sock, folder, TRUE,
2536                                   exists, recent, unseen, uid_validity);
2537 }
2538
2539 #undef THROW
2540
2541 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2542 {
2543         gchar *folder_;
2544
2545         QUOTE_IF_REQUIRED(folder_, folder);
2546         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2547
2548         return imap_cmd_ok(sock, NULL);
2549 }
2550
2551 static gint imap_cmd_rename(SockInfo *sock, const gchar *old_folder,
2552                             const gchar *new_folder)
2553 {
2554         gchar *old_folder_, *new_folder_;
2555
2556         QUOTE_IF_REQUIRED(old_folder_, old_folder);
2557         QUOTE_IF_REQUIRED(new_folder_, new_folder);
2558         imap_cmd_gen_send(sock, "RENAME %s %s", old_folder_, new_folder_);
2559
2560         return imap_cmd_ok(sock, NULL);
2561 }
2562
2563 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2564 {
2565         gchar *folder_;
2566
2567         QUOTE_IF_REQUIRED(folder_, folder);
2568         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2569
2570         return imap_cmd_ok(sock, NULL);
2571 }
2572
2573 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2574 {
2575         gint ok;
2576         gchar buf[IMAPBUFSIZE];
2577         gchar *cur_pos;
2578         gchar size_str[32];
2579         glong size_num;
2580
2581         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2582
2583         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2584
2585         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2586                == IMAP_SUCCESS) {
2587                 if (buf[0] != '*' || buf[1] != ' ')
2588                         return IMAP_ERROR;
2589                 if (strstr(buf, "FETCH") != NULL)
2590                         break;
2591         }
2592         if (ok != IMAP_SUCCESS)
2593                 return ok;
2594
2595         cur_pos = strchr(buf, '{');
2596         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2597         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2598         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2599         size_num = atol(size_str);
2600
2601         if (*cur_pos != '\0') return IMAP_ERROR;
2602
2603         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
2604                 return IMAP_ERROR;
2605
2606         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
2607                 return IMAP_ERROR;
2608
2609         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
2610                 return IMAP_ERROR;
2611
2612         ok = imap_cmd_ok(sock, NULL);
2613
2614         return ok;
2615 }
2616
2617 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2618                             const gchar *file)
2619 {
2620         gint ok;
2621         gint size;
2622         gchar *destfolder_;
2623         gchar buf[BUFFSIZE];
2624         FILE *fp;
2625
2626         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2627
2628         size = get_file_size_as_crlf(file);
2629         if ((fp = fopen(file, "rb")) == NULL) {
2630                 FILE_OP_ERROR(file, "fopen");
2631                 return -1;
2632         }
2633         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2634         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2635
2636         ok = imap_cmd_gen_recv(sock, buf, sizeof(buf));
2637         if (ok != IMAP_SUCCESS || buf[0] != '+' || buf[1] != ' ') {
2638                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2639                 fclose(fp);
2640                 return IMAP_ERROR;
2641         }
2642
2643         log_print("IMAP4> %s\n", _("(sending file...)"));
2644
2645         while (fgets(buf, sizeof(buf), fp) != NULL) {
2646                 strretchomp(buf);
2647                 if (sock_puts(sock, buf) < 0) {
2648                         fclose(fp);
2649                         sock_close(sock);
2650                         return -1;
2651                 }
2652         }
2653
2654         if (ferror(fp)) {
2655                 FILE_OP_ERROR(file, "fgets");
2656                 fclose(fp);
2657                 sock_close(sock);
2658                 return -1;
2659         }
2660
2661         sock_puts(sock, "");
2662
2663         fclose(fp);
2664         return imap_cmd_ok(sock, NULL);
2665 }
2666
2667 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
2668 {
2669         gint ok;
2670         gchar *destfolder_;
2671
2672         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2673
2674         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2675         imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder_);
2676
2677         ok = imap_cmd_ok(sock, NULL);
2678         if (ok != IMAP_SUCCESS) {
2679                 log_warning(_("can't copy %d to %s\n"), uid, destfolder_);
2680                 return -1;
2681         }
2682
2683         return ok;
2684 }
2685
2686 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2687 {
2688         imap_cmd_gen_send
2689                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
2690                  first_uid, last_uid);
2691
2692         return IMAP_SUCCESS;
2693 }
2694
2695 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2696                            gchar *sub_cmd)
2697 {
2698         gint ok;
2699
2700         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2701                           first_uid, last_uid, sub_cmd);
2702
2703         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2704                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2705                             first_uid, last_uid, sub_cmd);
2706                 return ok;
2707         }
2708
2709         return IMAP_SUCCESS;
2710 }
2711
2712 static gint imap_cmd_expunge(SockInfo *sock)
2713 {
2714         gint ok;
2715
2716         imap_cmd_gen_send(sock, "EXPUNGE");
2717         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2718                 log_warning(_("error while imap command: EXPUNGE\n"));
2719                 return ok;
2720         }
2721
2722         return IMAP_SUCCESS;
2723 }
2724
2725 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2726 {
2727         gint ok;
2728         gchar buf[IMAPBUFSIZE];
2729         gint cmd_num;
2730         gchar cmd_status[IMAPBUFSIZE];
2731
2732         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2733                == IMAP_SUCCESS) {
2734                 if (buf[0] == '*' && buf[1] == ' ') {
2735                         if (argbuf)
2736                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2737                         continue;
2738                 }
2739
2740                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2741                         return IMAP_ERROR;
2742                 else if (cmd_num == imap_cmd_count &&
2743                          !strcmp(cmd_status, "OK")) {
2744                         if (argbuf)
2745                                 g_ptr_array_add(argbuf, g_strdup(buf));
2746                         return IMAP_SUCCESS;
2747                 } else
2748                         return IMAP_ERROR;
2749         }
2750
2751         return ok;
2752 }
2753
2754 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2755 {
2756         gchar buf[IMAPBUFSIZE];
2757         gchar tmp[IMAPBUFSIZE];
2758         gchar *p;
2759         va_list args;
2760
2761         va_start(args, format);
2762         g_vsnprintf(tmp, sizeof(tmp), format, args);
2763         va_end(args);
2764
2765         imap_cmd_count++;
2766
2767         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2768         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2769                 *p = '\0';
2770                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2771         } else
2772                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2773
2774         sock_write(sock, buf, strlen(buf));
2775 }
2776
2777 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
2778 {
2779         if (sock_gets(sock, buf, size) == -1)
2780                 return IMAP_SOCKET;
2781
2782         strretchomp(buf);
2783
2784         log_print("IMAP4< %s\n", buf);
2785
2786         return IMAP_SUCCESS;
2787 }
2788
2789
2790 /* misc utility functions */
2791
2792 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2793 {
2794         gchar *tmp;
2795
2796         dest[0] = '\0';
2797         tmp = strchr(src, ch);
2798         if (!tmp)
2799                 return NULL;
2800
2801         memcpy(dest, src, MIN(tmp - src, len - 1));
2802         dest[MIN(tmp - src, len - 1)] = '\0';
2803
2804         return tmp + 1;
2805 }
2806
2807 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
2808 {
2809         const gchar *p = src;
2810         gint n = 0;
2811
2812         g_return_val_if_fail(*p == ch, NULL);
2813
2814         *dest = '\0';
2815         p++;
2816
2817         while (*p != '\0' && *p != ch) {
2818                 if (n < len - 1) {
2819                         if (*p == '\\' && *(p + 1) != '\0')
2820                                 p++;
2821                         *dest++ = *p++;
2822                 } else
2823                         p++;
2824                 n++;
2825         }
2826
2827         *dest = '\0';
2828         return (gchar *)(*p == ch ? p + 1 : p);
2829 }
2830
2831 static gchar *search_array_starts(GPtrArray *array, const gchar *str)
2832 {
2833         gint i;
2834         size_t len;
2835
2836         g_return_val_if_fail(str != NULL, NULL);
2837         len = strlen(str);
2838         for (i = 0; i < array->len; i++) {
2839                 gchar *tmp;
2840                 tmp = g_ptr_array_index(array, i);
2841                 if (strncmp(tmp, str, len) == 0)
2842                         return tmp;
2843         }
2844         return NULL;
2845 }
2846
2847 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
2848 {
2849         gint i;
2850
2851         for (i = 0; i < array->len; i++) {
2852                 gchar *tmp;
2853
2854                 tmp = g_ptr_array_index(array, i);
2855                 if (strstr(tmp, str) != NULL)
2856                         return tmp;
2857         }
2858
2859         return NULL;
2860 }
2861
2862 static gchar *search_array_str(GPtrArray *array, gchar *str)
2863 {
2864         gint i;
2865         gint len;
2866
2867         len = strlen(str);
2868
2869         for (i = 0; i < array->len; i++) {
2870                 gchar *tmp;
2871
2872                 tmp = g_ptr_array_index(array, i);
2873                 if (!strncmp(tmp, str, len))
2874                         return tmp;
2875         }
2876
2877         return NULL;
2878 }
2879
2880 static void imap_path_separator_subst(gchar *str, gchar separator)
2881 {
2882         gchar *p;
2883         gboolean in_escape = FALSE;
2884
2885         if (!separator || separator == '/') return;
2886
2887         for (p = str; *p != '\0'; p++) {
2888                 if (*p == '/' && !in_escape)
2889                         *p = separator;
2890                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
2891                         in_escape = TRUE;
2892                 else if (*p == '-' && in_escape)
2893                         in_escape = FALSE;
2894         }
2895 }
2896
2897 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
2898 {
2899 #if !HAVE_LIBJCONV
2900         return g_strdup(mutf7_str);
2901 #else
2902         static iconv_t cd = (iconv_t)-1;
2903         static gboolean iconv_ok = TRUE;
2904         GString *norm_utf7;
2905         gchar *norm_utf7_p;
2906         size_t norm_utf7_len;
2907         const gchar *p;
2908         gchar *to_str, *to_p;
2909         size_t to_len;
2910         gboolean in_escape = FALSE;
2911
2912         if (!iconv_ok) return g_strdup(mutf7_str);
2913
2914         if (cd == (iconv_t)-1) {
2915                 cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
2916                 if (cd == (iconv_t)-1) {
2917                         g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2918                                   conv_get_current_charset_str());
2919                         iconv_ok = FALSE;
2920                         return g_strdup(mutf7_str);
2921                 }
2922         }
2923
2924         norm_utf7 = g_string_new(NULL);
2925
2926         for (p = mutf7_str; *p != '\0'; p++) {
2927                 /* replace: '&'  -> '+',
2928                             "&-" -> '&',
2929                             escaped ','  -> '/' */
2930                 if (!in_escape && *p == '&') {
2931                         if (*(p + 1) != '-') {
2932                                 g_string_append_c(norm_utf7, '+');
2933                                 in_escape = TRUE;
2934                         } else {
2935                                 g_string_append_c(norm_utf7, '&');
2936                                 p++;
2937                         }
2938                 } else if (in_escape && *p == ',') {
2939                         g_string_append_c(norm_utf7, '/');
2940                 } else if (in_escape && *p == '-') {
2941                         g_string_append_c(norm_utf7, '-');
2942                         in_escape = FALSE;
2943                 } else {
2944                         g_string_append_c(norm_utf7, *p);
2945                 }
2946         }
2947
2948         norm_utf7_p = norm_utf7->str;
2949         norm_utf7_len = norm_utf7->len;
2950         to_len = strlen(mutf7_str) * 5;
2951         to_p = to_str = g_malloc(to_len + 1);
2952
2953         if (iconv(cd, &norm_utf7_p, &norm_utf7_len, &to_p, &to_len) == -1) {
2954                 g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2955                           conv_get_current_charset_str());
2956                 g_string_free(norm_utf7, TRUE);
2957                 g_free(to_str);
2958                 return g_strdup(mutf7_str);
2959         }
2960
2961         /* second iconv() call for flushing */
2962         iconv(cd, NULL, NULL, &to_p, &to_len);
2963         g_string_free(norm_utf7, TRUE);
2964         *to_p = '\0';
2965
2966         return to_str;
2967 #endif /* !HAVE_LIBJCONV */
2968 }
2969
2970 static gchar *imap_locale_to_modified_utf7(const gchar *from)
2971 {
2972 #if !HAVE_LIBJCONV
2973         return g_strdup(from);
2974 #else
2975         static iconv_t cd = (iconv_t)-1;
2976         static gboolean iconv_ok = TRUE;
2977         gchar *norm_utf7, *norm_utf7_p;
2978         size_t from_len, norm_utf7_len;
2979         GString *to_str;
2980         gchar *from_tmp, *to, *p;
2981         gboolean in_escape = FALSE;
2982
2983         if (!iconv_ok) return g_strdup(from);
2984
2985         if (cd == (iconv_t)-1) {
2986                 cd = iconv_open("UTF-7", conv_get_current_charset_str());
2987                 if (cd == (iconv_t)-1) {
2988                         g_warning(_("iconv cannot convert %s to UTF-7\n"),
2989                                   conv_get_current_charset_str());
2990                         iconv_ok = FALSE;
2991                         return g_strdup(from);
2992                 }
2993         }
2994
2995         Xstrdup_a(from_tmp, from, return g_strdup(from));
2996         from_len = strlen(from);
2997         norm_utf7_len = from_len * 5;
2998         Xalloca(norm_utf7, norm_utf7_len + 1, return g_strdup(from));
2999         norm_utf7_p = norm_utf7;
3000
3001 #define IS_PRINT(ch) (isprint(ch) && isascii(ch))
3002
3003         while (from_len > 0) {
3004                 if (IS_PRINT(*from_tmp)) {
3005                         /* printable ascii char */
3006                         *norm_utf7_p = *from_tmp;
3007                         norm_utf7_p++;
3008                         from_tmp++;
3009                         from_len--;
3010                 } else {
3011                         size_t mblen;
3012
3013                         /* unprintable char: convert to UTF-7 */
3014                         for (mblen = 0;
3015                              !IS_PRINT(from_tmp[mblen]) && mblen < from_len;
3016                              mblen++)
3017                                 ;
3018                         from_len -= mblen;
3019                         if (iconv(cd, &from_tmp, &mblen,
3020                                   &norm_utf7_p, &norm_utf7_len) == -1) {
3021                                 g_warning(_("iconv cannot convert %s to UTF-7\n"),
3022                                           conv_get_current_charset_str());
3023                                 return g_strdup(from);
3024                         }
3025
3026                         /* second iconv() call for flushing */
3027                         iconv(cd, NULL, NULL, &norm_utf7_p, &norm_utf7_len);
3028                 }
3029         }
3030
3031 #undef IS_PRINT
3032
3033         *norm_utf7_p = '\0';
3034         to_str = g_string_new(NULL);
3035         for (p = norm_utf7; p < norm_utf7_p; p++) {
3036                 /* replace: '&' -> "&-",
3037                             '+' -> '&',
3038                             escaped '/' -> ',' */
3039                 if (!in_escape && *p == '&') {
3040                         g_string_append(to_str, "&-");
3041                 } else if (!in_escape && *p == '+') {
3042                         g_string_append_c(to_str, '&');
3043                         in_escape = TRUE;
3044                 } else if (in_escape && *p == '/') {
3045                         g_string_append_c(to_str, ',');
3046                 } else if (in_escape && *p == '-') {
3047                         in_escape = FALSE;
3048                         g_string_append_c(to_str, '-');
3049                 } else {
3050                         g_string_append_c(to_str, *p);
3051                 }
3052         }
3053
3054         if (in_escape) {
3055                 in_escape = FALSE;
3056                 g_string_append_c(to_str, '-');
3057         }
3058
3059         to = to_str->str;
3060         g_string_free(to_str, FALSE);
3061
3062         return to;
3063 #endif
3064 }
3065
3066 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
3067 {
3068         FolderItem *item = node->data;
3069         gchar **paths = data;
3070         const gchar *oldpath = paths[0];
3071         const gchar *newpath = paths[1];
3072         gchar *base;
3073         gchar *new_itempath;
3074         gint oldpathlen;
3075
3076         oldpathlen = strlen(oldpath);
3077         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
3078                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
3079                 return TRUE;
3080         }
3081
3082         base = item->path + oldpathlen;
3083         while (*base == G_DIR_SEPARATOR) base++;
3084         if (*base == '\0')
3085                 new_itempath = g_strdup(newpath);
3086         else
3087                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
3088                                            NULL);
3089         g_free(item->path);
3090         item->path = new_itempath;
3091
3092         return FALSE;
3093 }