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                                          SSLType         ssl_type);
 116 #else
 117 static SockInfo *imap_open              (const gchar    *server,
 118                                          gushort         port);
 119 #endif
 120
 121 #if USE_SSL
 122 static SockInfo *imap_open_tunnel(const gchar *server,
 123                                   const gchar *tunnelcmd,
 124                                   SSLType ssl_type);
 125 #else
 126 static SockInfo *imap_open_tunnel(const gchar *server,
 127                                   const gchar *tunnelcmd);
 128 #endif
 129
 130 #if USE_SSL
 131 static SockInfo *imap_init_sock(SockInfo *sock, SSLType  ssl_type);
 132 #else
 133 static SockInfo *imap_init_sock(SockInfo *sock);
 134 #endif
 135
 136 static gint imap_set_message_flags      (IMAPSession    *session,
 137                                          guint32         first_uid,
 138                                          guint32         last_uid,
 139                                          IMAPFlags       flag,
 140                                          gboolean        is_set);
 141 static gint imap_select                 (IMAPSession    *session,
 142                                          IMAPFolder     *folder,
 143                                          const gchar    *path,
 144                                          gint           *exists,
 145                                          gint           *recent,
 146                                          gint           *unseen,
 147                                          guint32        *uid_validity);
 148 static gint imap_get_uid                (IMAPSession    *session,
 149                                          gint            msgnum,
 150                                          guint32        *uid);
 151 static gint imap_status                 (IMAPSession    *session,
 152                                          IMAPFolder     *folder,
 153                                          const gchar    *path,
 154                                          gint           *messages,
 155                                          gint           *recent,
 156                                          guint32        *uid_next,
 157                                          guint32        *uid_validity,
 158                                          gint           *unseen);
 159
 160 static void imap_parse_namespace                (IMAPSession    *session,
 161                                                  IMAPFolder     *folder);
 162 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 163                                                  const gchar    *path);
 164 static gchar imap_get_path_separator            (IMAPFolder     *folder,
 165                                                  const gchar    *path);
 166 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 167                                                  const gchar    *path);
 168
 169 static gchar *imap_parse_atom           (SockInfo       *sock,
 170                                          gchar          *src,
 171                                          gchar          *dest,
 172                                          gint            dest_len,
 173                                          GString        *str);
 174 static gchar *imap_parse_one_address    (SockInfo       *sock,
 175                                          gchar          *start,
 176                                          gchar          *out_from_str,
 177                                          gchar          *out_fromname_str,
 178                                          GString        *str);
 179 static gchar *imap_parse_address        (SockInfo       *sock,
 180                                          gchar          *start,
 181                                          gchar         **out_from_str,
 182                                          gchar         **out_fromname_str,
 183                                          GString        *str);
 184 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 185 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 186                                          GString        *line_str);
 187 static gint imap_greeting               (SockInfo *sock,
 188                                          gboolean *is_preauth);
 189
 190 /* low-level IMAP4rev1 commands */
 191 static gint imap_cmd_login      (SockInfo       *sock,
 192                                  const gchar    *user,
 193                                  const gchar    *pass);
 194 static gint imap_cmd_logout     (SockInfo       *sock);
 195 static gint imap_cmd_noop       (SockInfo       *sock);
 196 static gint imap_cmd_starttls   (SockInfo       *sock);
 197 static gint imap_cmd_namespace  (SockInfo       *sock,
 198                                  gchar         **ns_str);
 199 static gint imap_cmd_list       (SockInfo       *sock,
 200                                  const gchar    *ref,
 201                                  const gchar    *mailbox,
 202                                  GPtrArray      *argbuf);
 203 static gint imap_cmd_do_select  (SockInfo       *sock,
 204                                  const gchar    *folder,
 205                                  gboolean        examine,
 206                                  gint           *exists,
 207                                  gint           *recent,
 208                                  gint           *unseen,
 209                                  guint32        *uid_validity);
 210 static gint imap_cmd_select     (SockInfo       *sock,
 211                                  const gchar    *folder,
 212                                  gint           *exists,
 213                                  gint           *recent,
 214                                  gint           *unseen,
 215                                  guint32        *uid_validity);
 216 static gint imap_cmd_examine    (SockInfo       *sock,
 217                                  const gchar    *folder,
 218                                  gint           *exists,
 219                                  gint           *recent,
 220                                  gint           *unseen,
 221                                  guint32        *uid_validity);
 222 static gint imap_cmd_create     (SockInfo       *sock,
 223                                  const gchar    *folder);
 224 static gint imap_cmd_rename     (SockInfo       *sock,
 225                                  const gchar    *oldfolder,
 226                                  const gchar    *newfolder);
 227 static gint imap_cmd_delete     (SockInfo       *sock,
 228                                  const gchar    *folder);
 229 static gint imap_cmd_envelope   (SockInfo       *sock,
 230                                  guint32         first_uid,
 231                                  guint32         last_uid);
 232 #if 0
 233 static gint imap_cmd_search     (SockInfo       *sock,
 234                                  GSList         *numlist);
 235 #endif
 236 static gint imap_cmd_fetch      (SockInfo       *sock,
 237                                  guint32         uid,
 238                                  const gchar    *filename);
 239 static gint imap_cmd_append     (SockInfo       *sock,
 240                                  const gchar    *destfolder,
 241                                  const gchar    *file);
 242 static gint imap_cmd_copy       (SockInfo       *sock,
 243                                  guint32         uid,
 244                                  const gchar    *destfolder);
 245 static gint imap_cmd_store      (SockInfo       *sock,
 246                                  guint32         first_uid,
 247                                  guint32         last_uid,
 248                                  gchar          *sub_cmd);
 249 static gint imap_cmd_expunge    (SockInfo       *sock);
 250
 251 static gint imap_cmd_ok         (SockInfo       *sock,
 252                                  GPtrArray      *argbuf);
 253 static void imap_cmd_gen_send   (SockInfo       *sock,
 254                                  const gchar    *format, ...);
 255 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 256                                  gchar          *buf,
 257                                  gint            size);
 258
 259 /* misc utility functions */
 260 static gchar *strchr_cpy                        (const gchar    *src,
 261                                                  gchar           ch,
 262                                                  gchar          *dest,
 263                                                  gint            len);
 264 static gchar *get_quoted                        (const gchar    *src,
 265                                                  gchar           ch,
 266                                                  gchar          *dest,
 267                                                  gint            len);
 268 static gchar *search_array_contain_str          (GPtrArray      *array,
 269                                                  gchar          *str);
 270 static gchar *search_array_str                  (GPtrArray      *array,
 271                                                  gchar          *str);
 272 static gchar *search_array_starts               (GPtrArray *array,
 273                                                  const gchar *str);
 274 static void imap_path_separator_subst           (gchar          *str,
 275                                                  gchar           separator);
 276
 277 static gchar *imap_modified_utf7_to_locale      (const gchar    *mutf7_str);
 278 static gchar *imap_locale_to_modified_utf7      (const gchar    *from);
 279
 280 static gboolean imap_rename_folder_func         (GNode          *node,
 281                                                  gpointer        data);
 282
 283
 284 Folder *imap_folder_new(const gchar *name, const gchar *path)
 285 {
 286         Folder *folder;
 287
 288         folder = (Folder *)g_new0(IMAPFolder, 1);
 289         imap_folder_init(folder, name, path);
 290
 291         return folder;
 292 }
 293
 294 void imap_folder_destroy(IMAPFolder *folder)
 295 {
 296         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 297 }
 298
 299 static void imap_folder_init(Folder *folder, const gchar *name,
 300                              const gchar *path)
 301 {
 302         folder_remote_folder_init(folder, name, path);
 303
 304         folder->type = F_IMAP;
 305
 306         folder->get_msg_list        = imap_get_msg_list;
 307         folder->fetch_msg           = imap_fetch_msg;
 308         folder->add_msg             = imap_add_msg;
 309         folder->move_msg            = imap_move_msg;
 310         folder->move_msgs_with_dest = imap_move_msgs_with_dest;
 311         folder->copy_msg            = imap_copy_msg;
 312         folder->copy_msgs_with_dest = imap_copy_msgs_with_dest;
 313         folder->remove_msg          = imap_remove_msg;
 314         folder->remove_all_msg      = imap_remove_all_msg;
 315         folder->is_msg_changed      = imap_is_msg_changed;
 316         folder->scan                = imap_scan_folder;
 317         folder->scan_tree           = imap_scan_tree;
 318         folder->create_tree         = imap_create_tree;
 319         folder->create_folder       = imap_create_folder;
 320         folder->rename_folder       = imap_rename_folder;
 321         folder->remove_folder       = imap_remove_folder;
 322 }
 323
 324 static IMAPSession *imap_session_get(Folder *folder)
 325 {
 326         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 327         gushort port;
 328
 329         g_return_val_if_fail(folder != NULL, NULL);
 330         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 331         g_return_val_if_fail(folder->account != NULL, NULL);
 332
 333 #if USE_SSL
 334         port = folder->account->set_imapport ? folder->account->imapport
 335                 : folder->account->ssl_imap == SSL_TUNNEL
 336                 ? IMAPS_PORT : IMAP4_PORT;
 337 #else
 338         port = folder->account->set_imapport ? folder->account->imapport
 339                 : IMAP4_PORT;
 340 #endif
 341
 342         if (!rfolder->session) {
 343                 rfolder->session =
 344                         imap_session_new(folder->account);
 345                 if (rfolder->session) {
 346                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 347                                              IMAP_FOLDER(folder));
 348                         rfolder->session->last_access_time = time(NULL);
 349                 }
 350                 statusbar_pop_all();
 351                 return IMAP_SESSION(rfolder->session);
 352         }
 353
 354         /* I think the point of this code is to avoid sending a
 355          * keepalive if we've used the session recently and therefore
 356          * think it's still alive.  Unfortunately, most of the code
 357          * does not yet check for errors on the socket, and so if the
 358          * connection drops we don't notice until the timeout expires.
 359          * A better solution than sending a NOOP every time would be
 360          * for every command to be prepared to retry until it is
 361          * successfully sent. -- mbp */
 362         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 363                 rfolder->session->last_access_time = time(NULL);
 364                 statusbar_pop_all();
 365                 return IMAP_SESSION(rfolder->session);
 366         }
 367
 368         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 369                 log_warning(_("IMAP4 connection to %s:%d has been"
 370                               " disconnected. Reconnecting...\n"),
 371                             folder->account->recv_server, port);
 372                 session_destroy(rfolder->session);
 373                 rfolder->session =
 374                         imap_session_new(folder->account);
 375                 if (rfolder->session)
 376                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 377                                              IMAP_FOLDER(folder));
 378         }
 379
 380         if (rfolder->session)
 381                 rfolder->session->last_access_time = time(NULL);
 382         statusbar_pop_all();
 383         return IMAP_SESSION(rfolder->session);
 384 }
 385
 386 Session *imap_session_new(const PrefsAccount *account)
 387 {
 388         IMAPSession *session;
 389         SockInfo *imap_sock;
 390         gushort port;
 391         gchar *pass;
 392         gboolean is_preauth;
 393
 394 #ifdef USE_SSL
 395         /* FIXME: IMAP over SSL only... */
 396         SSLType ssl_type;
 397
 398         port = account->set_imapport ? account->imapport
 399                 : account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 400         ssl_type = account->ssl_imap ? TRUE : FALSE;
 401 #else
 402         port = account->set_imapport ? account->imapport
 403                 : IMAP4_PORT;
 404 #endif
 405
 406         if (account->set_tunnelcmd) {
 407                 log_message(_("creating tunneled IMAP4 connection\n"));
 408 #if USE_SSL
 409                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 410                                                   account->tunnelcmd,
 411                                                   ssl_type)) == NULL)
 412 #else
 413                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 414                                                   account->tunnelcmd)) == NULL)
 415 #endif
 416                         return NULL;
 417         } else {
 418                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 419
 420                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 421                             account->recv_server, port);
 422
 423 #if USE_SSL
 424                 if ((imap_sock = imap_open(account->recv_server, port,
 425                                            ssl_type)) == NULL)
 426 #else
 427                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 428 #endif
 429                         return NULL;
 430         }
 431
 432         /* Only need to log in if the connection was not PREAUTH */
 433         imap_greeting(imap_sock, &is_preauth);
 434         log_message("IMAP connection is %s-authenticated\n",
 435                     (is_preauth) ? "pre" : "un");
 436         if (!is_preauth) {
 437                 g_return_val_if_fail(account->userid != NULL, NULL);
 438
 439                 pass = account->passwd;
 440                 if (!pass) {
 441                         gchar *tmp_pass;
 442                         tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 443                         if (!tmp_pass)
 444                                 return NULL;
 445                         Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 446                         g_free(tmp_pass);
 447                 }
 448
 449                 if (imap_cmd_login(imap_sock, account->userid, pass) != IMAP_SUCCESS) {
 450                         imap_cmd_logout(imap_sock);
 451                         sock_close(imap_sock);
 452                         return NULL;
 453                 }
 454         }
 455
 456         session = g_new(IMAPSession, 1);
 457         SESSION(session)->type             = SESSION_IMAP;
 458         SESSION(session)->server           = g_strdup(account->recv_server);
 459         SESSION(session)->sock             = imap_sock;
 460         SESSION(session)->connected        = TRUE;
 461         SESSION(session)->phase            = SESSION_READY;
 462         SESSION(session)->last_access_time = time(NULL);
 463         SESSION(session)->data             = NULL;
 464         session->mbox = NULL;
 465
 466         session_list = g_list_append(session_list, session);
 467
 468         return SESSION(session);
 469 }
 470
 471 void imap_session_destroy(IMAPSession *session)
 472 {
 473         sock_close(SESSION(session)->sock);
 474         SESSION(session)->sock = NULL;
 475
 476         g_free(session->mbox);
 477
 478         session_list = g_list_remove(session_list, session);
 479 }
 480
 481 void imap_session_destroy_all(void)
 482 {
 483         while (session_list != NULL) {
 484                 IMAPSession *session = (IMAPSession *)session_list->data;
 485
 486                 imap_cmd_logout(SESSION(session)->sock);
 487                 session_destroy(SESSION(session));
 488         }
 489 }
 490
 491 #define THROW goto catch
 492
 493 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 494 {
 495         GSList *mlist = NULL;
 496         IMAPSession *session;
 497         gint ok, exists = 0, recent = 0, unseen = 0;
 498         guint32 uid_validity = 0;
 499         guint32 first_uid = 0, last_uid = 0, begin;
 500
 501         g_return_val_if_fail(folder != NULL, NULL);
 502         g_return_val_if_fail(item != NULL, NULL);
 503         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 504         g_return_val_if_fail(folder->account != NULL, NULL);
 505
 506         session = imap_session_get(folder);
 507
 508         if (!session) {
 509                 mlist = procmsg_read_cache(item, FALSE);
 510                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 511                 procmsg_set_flags(mlist, item);
 512                 statusbar_pop_all();
 513                 return mlist;
 514         }
 515
 516         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 517                          &exists, &recent, &unseen, &uid_validity);
 518         if (ok != IMAP_SUCCESS) THROW;
 519         if (exists > 0) {
 520                 ok = imap_get_uid(session, 1, &first_uid);
 521                 if (ok != IMAP_SUCCESS) THROW;
 522                 if (1 != exists) {
 523                         ok = imap_get_uid(session, exists, &last_uid);
 524                         if (ok != IMAP_SUCCESS) THROW;
 525                 } else
 526                         last_uid = first_uid;
 527         } else {
 528                 imap_delete_all_cached_messages(item);
 529                 statusbar_pop_all();
 530                 return NULL;
 531         }
 532
 533         if (use_cache) {
 534                 guint32 cache_last;
 535
 536                 mlist = procmsg_read_cache(item, FALSE);
 537                 procmsg_set_flags(mlist, item);
 538                 cache_last = procmsg_get_last_num_in_cache(mlist);
 539
 540                 /* calculating the range of envelope to get */
 541                 if (item->mtime != uid_validity) {
 542                         /* mailbox is changed (get all) */
 543                         begin = first_uid;
 544                 } else if (last_uid < cache_last) {
 545                         /* mailbox is changed (get all) */
 546                         begin = first_uid;
 547                 } else if (last_uid == cache_last) {
 548                         /* mailbox unchanged (get none)*/
 549                         begin = 0;
 550                 } else {
 551                         begin = cache_last + 1;
 552                 }
 553
 554                 item->mtime = uid_validity;
 555
 556                 if (first_uid > 0 && last_uid > 0) {
 557                         mlist = imap_delete_cached_messages(mlist, item,
 558                                                             0, first_uid - 1);
 559                         mlist = imap_delete_cached_messages(mlist, item,
 560                                                             last_uid + 1,
 561                                                             UINT_MAX);
 562                 }
 563                 if (begin > 0)
 564                         mlist = imap_delete_cached_messages(mlist, item,
 565                                                             begin, UINT_MAX);
 566         } else {
 567                 imap_delete_all_cached_messages(item);
 568                 begin = first_uid;
 569         }
 570
 571         if (begin > 0 && begin <= last_uid) {
 572                 GSList *newlist;
 573                 newlist = imap_get_uncached_messages(session, item,
 574                                                      begin, last_uid);
 575                 mlist = g_slist_concat(mlist, newlist);
 576         }
 577
 578         item->last_num = last_uid;
 579
 580 catch:
 581         statusbar_pop_all();
 582         return mlist;
 583 }
 584
 585 #undef THROW
 586
 587 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 588 {
 589         gchar *path, *filename;
 590         IMAPSession *session;
 591         gint ok;
 592
 593         g_return_val_if_fail(folder != NULL, NULL);
 594         g_return_val_if_fail(item != NULL, NULL);
 595
 596         path = folder_item_get_path(item);
 597         if (!is_dir_exist(path))
 598                 make_dir_hier(path);
 599         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 600         g_free(path);
 601
 602         if (is_file_exist(filename)) {
 603                 debug_print(_("message %d has been already cached.\n"), uid);
 604                 return filename;
 605         }
 606
 607         session = imap_session_get(folder);
 608         if (!session) {
 609                 g_free(filename);
 610                 return NULL;
 611         }
 612
 613         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 614                          NULL, NULL, NULL, NULL);
 615         statusbar_pop_all();
 616         if (ok != IMAP_SUCCESS) {
 617                 g_warning(_("can't select mailbox %s\n"), item->path);
 618                 g_free(filename);
 619                 return NULL;
 620         }
 621
 622         debug_print(_("getting message %d...\n"), uid);
 623         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 624
 625         statusbar_pop_all();
 626
 627         if (ok != IMAP_SUCCESS) {
 628                 g_warning(_("can't fetch message %d\n"), uid);
 629                 g_free(filename);
 630                 return NULL;
 631         }
 632
 633         return filename;
 634 }
 635
 636 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 637                   gboolean remove_source)
 638 {
 639         gchar *destdir;
 640         IMAPSession *session;
 641         gint messages, recent, unseen;
 642         guint32 uid_next, uid_validity;
 643         gint ok;
 644
 645         g_return_val_if_fail(folder != NULL, -1);
 646         g_return_val_if_fail(dest != NULL, -1);
 647         g_return_val_if_fail(file != NULL, -1);
 648
 649         session = imap_session_get(folder);
 650         if (!session) return -1;
 651
 652         ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
 653                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 654         statusbar_pop_all();
 655         if (ok != IMAP_SUCCESS) {
 656                 g_warning(_("can't append message %s\n"), file);
 657                 return -1;
 658         }
 659
 660         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 661         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 662         g_free(destdir);
 663
 664         if (ok != IMAP_SUCCESS) {
 665                 g_warning(_("can't append message %s\n"), file);
 666                 return -1;
 667         }
 668
 669         if (remove_source) {
 670                 if (unlink(file) < 0)
 671                         FILE_OP_ERROR(file, "unlink");
 672         }
 673
 674         return uid_next;
 675 }
 676
 677 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 678                          gboolean remove_source)
 679 {
 680         gchar *destdir;
 681         IMAPSession *session;
 682         gint ok;
 683
 684         g_return_val_if_fail(folder != NULL, -1);
 685         g_return_val_if_fail(folder->type == F_IMAP, -1);
 686         g_return_val_if_fail(dest != NULL, -1);
 687         g_return_val_if_fail(msginfo != NULL, -1);
 688
 689         session = imap_session_get(folder);
 690         if (!session) return -1;
 691
 692         if (msginfo->folder == dest) {
 693                 g_warning(_("the src folder is identical to the dest.\n"));
 694                 return -1;
 695         }
 696
 697         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 698
 699         if (remove_source)
 700                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 701                             msginfo->folder->path, G_DIR_SEPARATOR,
 702                             msginfo->msgnum, destdir);
 703         else
 704                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 705                             msginfo->folder->path, G_DIR_SEPARATOR,
 706                             msginfo->msgnum, destdir);
 707
 708         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 709
 710         if (ok == IMAP_SUCCESS && remove_source) {
 711                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 712                                        IMAP_FLAG_DELETED, TRUE);
 713                 ok = imap_cmd_expunge(SESSION(session)->sock);
 714         }
 715
 716         g_free(destdir);
 717         statusbar_pop_all();
 718
 719         if (ok == IMAP_SUCCESS)
 720                 return 0;
 721         else
 722                 return -1;
 723 }
 724
 725 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 726                                         GSList *msglist,
 727                                         gboolean remove_source)
 728 {
 729         gchar *destdir;
 730         GSList *cur;
 731         MsgInfo *msginfo;
 732         IMAPSession *session;
 733         gint ok = IMAP_SUCCESS;
 734
 735         g_return_val_if_fail(folder != NULL, -1);
 736         g_return_val_if_fail(dest != NULL, -1);
 737         g_return_val_if_fail(msglist != NULL, -1);
 738
 739         session = imap_session_get(folder);
 740         if (!session) return -1;
 741
 742         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 743
 744         for (cur = msglist; cur != NULL; cur = cur->next) {
 745                 msginfo = (MsgInfo *)cur->data;
 746
 747                 if (msginfo->folder == dest) {
 748                         g_warning(_("the src folder is identical to the dest.\n"));
 749                         continue;
 750                 }
 751
 752                 if (remove_source)
 753                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 754                                     msginfo->folder->path, G_DIR_SEPARATOR,
 755                                     msginfo->msgnum, destdir);
 756                 else
 757                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 758                                     msginfo->folder->path, G_DIR_SEPARATOR,
 759                                     msginfo->msgnum, destdir);
 760
 761                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 762                                    destdir);
 763
 764                 if (ok == IMAP_SUCCESS && remove_source) {
 765                         imap_set_message_flags
 766                                 (session, msginfo->msgnum, msginfo->msgnum,
 767                                  IMAP_FLAG_DELETED, TRUE);
 768                 }
 769         }
 770
 771         if (remove_source)
 772                 ok = imap_cmd_expunge(SESSION(session)->sock);
 773
 774         g_free(destdir);
 775         statusbar_pop_all();
 776
 777         if (ok == IMAP_SUCCESS)
 778                 return 0;
 779         else
 780                 return -1;
 781 }
 782
 783 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 784 {
 785         gchar *srcfile;
 786         gint ret = 0;
 787
 788         g_return_val_if_fail(folder != NULL, -1);
 789         g_return_val_if_fail(dest != NULL, -1);
 790         g_return_val_if_fail(msginfo != NULL, -1);
 791         g_return_val_if_fail(msginfo->folder != NULL, -1);
 792
 793         if (folder == msginfo->folder->folder)
 794                 return imap_do_copy(folder, dest, msginfo, TRUE);
 795
 796         srcfile = procmsg_get_message_file(msginfo);
 797         if (!srcfile) return -1;
 798
 799         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 800         g_free(srcfile);
 801
 802         if (ret == 0)
 803                 ret = folder_item_remove_msg(msginfo->folder, msginfo->msgnum);
 804
 805         return ret;
 806 }
 807
 808 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 809                               GSList *msglist)
 810 {
 811         MsgInfo *msginfo;
 812         GSList *cur;
 813         gint ret = 0;
 814
 815         g_return_val_if_fail(folder != NULL, -1);
 816         g_return_val_if_fail(dest != NULL, -1);
 817         g_return_val_if_fail(msglist != NULL, -1);
 818
 819         msginfo = (MsgInfo *)msglist->data;
 820         if (folder == msginfo->folder->folder)
 821                 return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 822
 823         for (cur = msglist; cur != NULL; cur = cur->next) {
 824                 msginfo = (MsgInfo *)cur->data;
 825                 ret = imap_move_msg(folder, dest, msginfo);
 826                 if (ret != 0) break;
 827         }
 828
 829         return ret;
 830 }
 831
 832 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 833 {
 834         gchar *srcfile;
 835         gint ret = 0;
 836
 837         g_return_val_if_fail(folder != NULL, -1);
 838         g_return_val_if_fail(dest != NULL, -1);
 839         g_return_val_if_fail(msginfo != NULL, -1);
 840         g_return_val_if_fail(msginfo->folder != NULL, -1);
 841
 842         if (folder == msginfo->folder->folder)
 843                 return imap_do_copy(folder, dest, msginfo, FALSE);
 844
 845         srcfile = procmsg_get_message_file(msginfo);
 846         if (!srcfile) return -1;
 847
 848         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 849
 850         g_free(srcfile);
 851
 852         return ret;
 853 }
 854
 855 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 856                               GSList *msglist)
 857 {
 858         MsgInfo *msginfo;
 859         GSList *cur;
 860         gint ret = 0;
 861
 862         g_return_val_if_fail(folder != NULL, -1);
 863         g_return_val_if_fail(dest != NULL, -1);
 864         g_return_val_if_fail(msglist != NULL, -1);
 865
 866         msginfo = (MsgInfo *)msglist->data;
 867         if (folder == msginfo->folder->folder)
 868                 return imap_do_copy_msgs_with_dest
 869                         (folder, dest, msglist, FALSE);
 870
 871         for (cur = msglist; cur != NULL; cur = cur->next) {
 872                 msginfo = (MsgInfo *)cur->data;
 873                 ret = imap_copy_msg(folder, dest, msginfo);
 874                 if (ret != 0) break;
 875         }
 876
 877         return ret;
 878 }
 879
 880 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 881 {
 882         gint exists, recent, unseen;
 883         guint32 uid_validity;
 884         gint ok;
 885         IMAPSession *session;
 886
 887         g_return_val_if_fail(folder != NULL, -1);
 888         g_return_val_if_fail(folder->type == F_IMAP, -1);
 889         g_return_val_if_fail(item != NULL, -1);
 890
 891         session = imap_session_get(folder);
 892         if (!session) return -1;
 893
 894         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 895                          &exists, &recent, &unseen, &uid_validity);
 896         statusbar_pop_all();
 897         if (ok != IMAP_SUCCESS)
 898                 return ok;
 899
 900         ok = imap_set_message_flags
 901                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 902                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 903         statusbar_pop_all();
 904         if (ok != IMAP_SUCCESS) {
 905                 log_warning(_("can't set deleted flags: %d\n"), uid);
 906                 return ok;
 907         }
 908
 909         ok = imap_cmd_expunge(SESSION(session)->sock);
 910         statusbar_pop_all();
 911         if (ok != IMAP_SUCCESS) {
 912                 log_warning(_("can't expunge\n"));
 913                 return ok;
 914         }
 915
 916         return IMAP_SUCCESS;
 917 }
 918
 919 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 920 {
 921         gint exists, recent, unseen;
 922         guint32 uid_validity;
 923         gint ok;
 924         IMAPSession *session;
 925
 926         g_return_val_if_fail(folder != NULL, -1);
 927         g_return_val_if_fail(item != NULL, -1);
 928
 929         session = imap_session_get(folder);
 930         if (!session) return -1;
 931
 932         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 933                          &exists, &recent, &unseen, &uid_validity);
 934         statusbar_pop_all();
 935         if (ok != IMAP_SUCCESS)
 936                 return ok;
 937         if (exists == 0)
 938                 return IMAP_SUCCESS;
 939
 940         imap_cmd_gen_send(SESSION(session)->sock,
 941                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 942         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 943         statusbar_pop_all();
 944         if (ok != IMAP_SUCCESS) {
 945                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 946                 return ok;
 947         }
 948
 949         ok = imap_cmd_expunge(SESSION(session)->sock);
 950         statusbar_pop_all();
 951         if (ok != IMAP_SUCCESS) {
 952                 log_warning(_("can't expunge\n"));
 953                 return ok;
 954         }
 955
 956         return IMAP_SUCCESS;
 957 }
 958
 959 gboolean imap_is_msg_changed(Folder *folder, FolderItem *item, MsgInfo *msginfo)
 960 {
 961         /* TODO: properly implement this method */
 962         return FALSE;
 963 }
 964
 965 gint imap_scan_folder(Folder *folder, FolderItem *item)
 966 {
 967         IMAPSession *session;
 968         gint messages, recent, unseen;
 969         guint32 uid_next, uid_validity;
 970         gint ok;
 971
 972         g_return_val_if_fail(folder != NULL, -1);
 973         g_return_val_if_fail(item != NULL, -1);
 974
 975         session = imap_session_get(folder);
 976         if (!session) return -1;
 977
 978         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
 979                          &messages, &recent, &uid_next, &uid_validity, &unseen);
 980         statusbar_pop_all();
 981         if (ok != IMAP_SUCCESS) return -1;
 982
 983         item->new = unseen > 0 ? recent : 0;
 984         item->unread = unseen;
 985         item->total = messages;
 986         item->last_num = (messages > 0 && uid_next > 0) ? uid_next - 1 : 0;
 987         /* item->mtime = uid_validity; */
 988
 989         return 0;
 990 }
 991
 992 void imap_scan_tree(Folder *folder)
 993 {
 994         FolderItem *item;
 995         IMAPSession *session;
 996         gchar *root_folder = NULL;
 997
 998         g_return_if_fail(folder != NULL);
 999         g_return_if_fail(folder->account != NULL);
1000
1001         session = imap_session_get(folder);
1002         if (!session) return;
1003
1004         if (folder->account->imap_dir && *folder->account->imap_dir) {
1005                 Xstrdup_a(root_folder, folder->account->imap_dir, return);
1006                 strtailchomp(root_folder, '/');
1007                 debug_print("IMAP root directory: %s\n", root_folder);
1008         }
1009
1010         folder_tree_destroy(folder);
1011         item = folder_item_new(folder->name, root_folder);
1012         item->folder = folder;
1013         folder->node = g_node_new(item);
1014
1015         imap_scan_tree_recursive(session, item);
1016
1017         imap_create_missing_folders(folder);
1018 }
1019
1020 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
1021 {
1022         Folder *folder;
1023         IMAPFolder *imapfolder;
1024         FolderItem *new_item;
1025         GSList *item_list, *cur;
1026         gchar *real_path;
1027         gchar *wildcard_path;
1028         gchar separator;
1029         gchar wildcard[3];
1030
1031         g_return_val_if_fail(item != NULL, -1);
1032         g_return_val_if_fail(item->folder != NULL, -1);
1033         g_return_val_if_fail(item->no_sub == FALSE, -1);
1034
1035         folder = FOLDER(item->folder);
1036         imapfolder = IMAP_FOLDER(folder);
1037
1038         separator = imap_get_path_separator(imapfolder, item->path);
1039
1040         if (item->folder->ui_func)
1041                 item->folder->ui_func(folder, item, folder->ui_func_data);
1042
1043         if (item->path) {
1044                 wildcard[0] = separator;
1045                 wildcard[1] = '%';
1046                 wildcard[2] = '\0';
1047                 real_path = imap_get_real_path(imapfolder, item->path);
1048         } else {
1049                 wildcard[0] = '%';
1050                 wildcard[1] = '\0';
1051                 real_path = g_strdup("");
1052         }
1053
1054         Xstrcat_a(wildcard_path, real_path, wildcard,
1055                   {g_free(real_path); return IMAP_ERROR;});
1056         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
1057
1058         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
1059                           wildcard_path);
1060
1061         strtailchomp(real_path, separator);
1062         item_list = imap_parse_list(session, real_path);
1063         g_free(real_path);
1064
1065         for (cur = item_list; cur != NULL; cur = cur->next) {
1066                 new_item = cur->data;
1067                 if (!strcmp(new_item->path, "INBOX")) {
1068                         if (!folder->inbox) {
1069                                 new_item->stype = F_INBOX;
1070                                 item->folder->inbox = new_item;
1071                         } else {
1072                                 folder_item_destroy(new_item);
1073                                 continue;
1074                         }
1075                 } else if (!item->parent || item->stype == F_INBOX) {
1076                         gchar *base;
1077
1078                         base = g_basename(new_item->path);
1079
1080                         if (!folder->outbox && !strcasecmp(base, "Sent")) {
1081                                 new_item->stype = F_OUTBOX;
1082                                 folder->outbox = new_item;
1083                         } else if (!folder->draft && !strcasecmp(base, "Drafts")) {
1084                                 new_item->stype = F_DRAFT;
1085                                 folder->draft = new_item;
1086                         } else if (!folder->queue && !strcasecmp(base, "Queue")) {
1087                                 new_item->stype = F_QUEUE;
1088                                 folder->queue = new_item;
1089                         } else if (!folder->trash && !strcasecmp(base, "Trash")) {
1090                                 new_item->stype = F_TRASH;
1091                                 folder->trash = new_item;
1092                         }
1093                 }
1094                 folder_item_append(item, new_item);
1095                 if (new_item->no_select == FALSE)
1096                         imap_scan_folder(folder, new_item);
1097                 if (new_item->no_sub == FALSE)
1098                         imap_scan_tree_recursive(session, new_item);
1099         }
1100
1101         return IMAP_SUCCESS;
1102 }
1103
1104 static GSList *imap_parse_list(IMAPSession *session, const gchar *real_path)
1105 {
1106         gchar buf[IMAPBUFSIZE];
1107         gchar flags[256];
1108         gchar separator[16];
1109         gchar *p;
1110         gchar *name;
1111         gchar *loc_name, *loc_path;
1112         GSList *item_list = NULL;
1113         GString *str;
1114         FolderItem *new_item;
1115
1116         debug_print("getting list of %s ...\n",
1117                     *real_path ? real_path : "\"\"");
1118
1119         str = g_string_new(NULL);
1120
1121         for (;;) {
1122                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1123                         log_warning(_("error occured while getting LIST.\n"));
1124                         break;
1125                 }
1126                 strretchomp(buf);
1127                 if (buf[0] != '*' || buf[1] != ' ') {
1128                         log_print("IMAP4< %s\n", buf);
1129                         break;
1130                 }
1131                 debug_print("IMAP4< %s\n", buf);
1132
1133                 g_string_assign(str, buf);
1134                 p = str->str + 2;
1135                 if (strncmp(p, "LIST ", 5) != 0) continue;
1136                 p += 5;
1137
1138                 if (*p != '(') continue;
1139                 p++;
1140                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1141                 if (!p) continue;
1142                 while (*p == ' ') p++;
1143
1144                 p = strchr_cpy(p, ' ', separator, sizeof(separator));
1145                 if (!p) continue;
1146                 extract_quote(separator, '"');
1147                 if (!strcmp(separator, "NIL"))
1148                         separator[0] = '\0';
1149
1150                 buf[0] = '\0';
1151                 while (*p == ' ') p++;
1152                 if (*p == '{' || *p == '"')
1153                         p = imap_parse_atom(SESSION(session)->sock, p,
1154                                             buf, sizeof(buf), str);
1155                 else
1156                         strncpy2(buf, p, sizeof(buf));
1157                 strtailchomp(buf, separator[0]);
1158                 if (buf[0] == '\0') continue;
1159                 if (!strcmp(buf, real_path)) continue;
1160
1161                 if (separator[0] != '\0')
1162                         subst_char(buf, separator[0], '/');
1163                 name = g_basename(buf);
1164                 if (name[0] == '.') continue;
1165
1166                 loc_name = imap_modified_utf7_to_locale(name);
1167                 loc_path = imap_modified_utf7_to_locale(buf);
1168                 new_item = folder_item_new(loc_name, loc_path);
1169                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1170                         new_item->no_sub = TRUE;
1171                 if (strcmp(buf, "INBOX") != 0 &&
1172                     strcasestr(flags, "\\Noselect") != NULL)
1173                         new_item->no_select = TRUE;
1174
1175                 item_list = g_slist_append(item_list, new_item);
1176
1177                 debug_print("folder %s has been added.\n", loc_path);
1178                 g_free(loc_path);
1179                 g_free(loc_name);
1180         }
1181
1182         g_string_free(str, TRUE);
1183         statusbar_pop_all();
1184
1185         return item_list;
1186 }
1187
1188 gint imap_create_tree(Folder *folder)
1189 {
1190         g_return_val_if_fail(folder != NULL, -1);
1191         g_return_val_if_fail(folder->node != NULL, -1);
1192         g_return_val_if_fail(folder->node->data != NULL, -1);
1193         g_return_val_if_fail(folder->account != NULL, -1);
1194
1195         imap_scan_tree(folder);
1196         imap_create_missing_folders(folder);
1197
1198         return 0;
1199 }
1200
1201 static void imap_create_missing_folders(Folder *folder)
1202 {
1203         g_return_if_fail(folder != NULL);
1204
1205         if (!folder->inbox)
1206                 folder->inbox = imap_create_special_folder
1207                         (folder, F_INBOX, "INBOX");
1208 #if 0
1209         if (!folder->outbox)
1210                 folder->outbox = imap_create_special_folder
1211                         (folder, F_OUTBOX, "Sent");
1212         if (!folder->draft)
1213                 folder->draft = imap_create_special_folder
1214                         (folder, F_DRAFT, "Drafts");
1215         if (!folder->queue)
1216                 folder->queue = imap_create_special_folder
1217                         (folder, F_QUEUE, "Queue");
1218 #endif
1219         if (!folder->trash)
1220                 folder->trash = imap_create_special_folder
1221                         (folder, F_TRASH, "Trash");
1222 }
1223
1224 static FolderItem *imap_create_special_folder(Folder *folder,
1225                                               SpecialFolderItemType stype,
1226                                               const gchar *name)
1227 {
1228         FolderItem *item;
1229         FolderItem *new_item;
1230
1231         g_return_val_if_fail(folder != NULL, NULL);
1232         g_return_val_if_fail(folder->node != NULL, NULL);
1233         g_return_val_if_fail(folder->node->data != NULL, NULL);
1234         g_return_val_if_fail(folder->account != NULL, NULL);
1235         g_return_val_if_fail(name != NULL, NULL);
1236
1237         item = FOLDER_ITEM(folder->node->data);
1238         new_item = imap_create_folder(folder, item, name);
1239
1240         if (!new_item) {
1241                 g_warning(_("Can't create '%s'\n"), name);
1242                 if (!folder->inbox) return NULL;
1243
1244                 new_item = imap_create_folder(folder, folder->inbox, name);
1245                 if (!new_item)
1246                         g_warning(_("Can't create '%s' under INBOX\n"), name);
1247                 else
1248                         new_item->stype = stype;
1249         } else
1250                 new_item->stype = stype;
1251
1252         return new_item;
1253 }
1254
1255 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1256                                const gchar *name)
1257 {
1258         gchar *dirpath, *imap_path;
1259         IMAPSession *session;
1260         FolderItem *new_item;
1261         gchar separator;
1262         gchar *new_name;
1263         const gchar *p;
1264         gint ok;
1265
1266         g_return_val_if_fail(folder != NULL, NULL);
1267         g_return_val_if_fail(folder->account != NULL, NULL);
1268         g_return_val_if_fail(parent != NULL, NULL);
1269         g_return_val_if_fail(name != NULL, NULL);
1270
1271         session = imap_session_get(folder);
1272         if (!session) return NULL;
1273
1274         if (!parent->parent && strcmp(name, "INBOX") == 0)
1275                 dirpath = g_strdup(name);
1276         else if (parent->path)
1277                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1278         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1279                 dirpath = g_strdup(name);
1280         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1281                 gchar *imap_dir;
1282
1283                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1284                 strtailchomp(imap_dir, '/');
1285                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1286         } else
1287                 dirpath = g_strdup(name);
1288
1289         /* keep trailing directory separator to create a folder that contains
1290            sub folder */
1291         imap_path = imap_locale_to_modified_utf7(dirpath);
1292         strtailchomp(dirpath, '/');
1293         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1294         strtailchomp(new_name, '/');
1295         separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
1296         imap_path_separator_subst(imap_path, separator);
1297         subst_char(new_name, '/', separator);
1298
1299         if (strcmp(name, "INBOX") != 0) {
1300                 GPtrArray *argbuf;
1301                 gint i;
1302                 gboolean exist = FALSE;
1303
1304                 argbuf = g_ptr_array_new();
1305                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
1306                                    argbuf);
1307                 statusbar_pop_all();
1308                 if (ok != IMAP_SUCCESS) {
1309                         log_warning(_("can't create mailbox: LIST failed\n"));
1310                         g_free(imap_path);
1311                         g_free(dirpath);
1312                         g_ptr_array_free(argbuf, TRUE);
1313                         return NULL;
1314                 }
1315
1316                 for (i = 0; i < argbuf->len; i++) {
1317                         gchar *str;
1318                         str = g_ptr_array_index(argbuf, i);
1319                         if (!strncmp(str, "LIST ", 5)) {
1320                                 exist = TRUE;
1321                                 break;
1322                         }
1323                 }
1324                 g_ptr_array_free(argbuf, TRUE);
1325
1326                 if (!exist) {
1327                         ok = imap_cmd_create(SESSION(session)->sock, imap_path);
1328                         statusbar_pop_all();
1329                         if (ok != IMAP_SUCCESS) {
1330                                 log_warning(_("can't create mailbox\n"));
1331                                 g_free(imap_path);
1332                                 g_free(dirpath);
1333                                 return NULL;
1334                         }
1335                 }
1336         }
1337
1338         new_item = folder_item_new(new_name, dirpath);
1339         folder_item_append(parent, new_item);
1340         g_free(imap_path);
1341         g_free(dirpath);
1342
1343         dirpath = folder_item_get_path(new_item);
1344         if (!is_dir_exist(dirpath))
1345                 make_dir_hier(dirpath);
1346         g_free(dirpath);
1347
1348         return new_item;
1349 }
1350
1351 gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
1352 {
1353         gchar *dirpath;
1354         gchar *newpath;
1355         gchar *real_oldpath;
1356         gchar *real_newpath;
1357         GNode *node;
1358         gchar *paths[2];
1359         gchar *old_cache_dir;
1360         gchar *new_cache_dir;
1361         IMAPSession *session;
1362         gchar separator;
1363         gint ok;
1364         gint exists, recent, unseen;
1365         guint32 uid_validity;
1366
1367         g_return_val_if_fail(folder != NULL, -1);
1368         g_return_val_if_fail(item != NULL, -1);
1369         g_return_val_if_fail(item->path != NULL, -1);
1370         g_return_val_if_fail(name != NULL, -1);
1371
1372         session = imap_session_get(folder);
1373         if (!session) return -1;
1374
1375         real_oldpath = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1376
1377         g_free(session->mbox);
1378         session->mbox = NULL;
1379         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1380                               &exists, &recent, &unseen, &uid_validity);
1381         statusbar_pop_all();
1382         if (ok != IMAP_SUCCESS) {
1383                 g_free(real_oldpath);
1384                 return -1;
1385         }
1386
1387         separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
1388         if (strchr(item->path, G_DIR_SEPARATOR)) {
1389                 dirpath = g_dirname(item->path);
1390                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
1391                 g_free(dirpath);
1392         } else
1393                 newpath = g_strdup(name);
1394
1395         real_newpath = imap_locale_to_modified_utf7(newpath);
1396         imap_path_separator_subst(real_newpath, separator);
1397
1398         ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
1399         statusbar_pop_all();
1400         if (ok != IMAP_SUCCESS) {
1401                 log_warning(_("can't rename mailbox: %s to %s\n"),
1402                             real_oldpath, real_newpath);
1403                 g_free(real_oldpath);
1404                 g_free(newpath);
1405                 g_free(real_newpath);
1406                 return -1;
1407         }
1408
1409         g_free(item->name);
1410         item->name = g_strdup(name);
1411
1412         old_cache_dir = folder_item_get_path(item);
1413
1414         node = g_node_find(item->folder->node, G_PRE_ORDER, G_TRAVERSE_ALL,
1415                            item);
1416         paths[0] = g_strdup(item->path);
1417         paths[1] = newpath;
1418         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1419                         imap_rename_folder_func, paths);
1420
1421         if (is_dir_exist(old_cache_dir)) {
1422                 new_cache_dir = folder_item_get_path(item);
1423                 if (rename(old_cache_dir, new_cache_dir) < 0) {
1424                         FILE_OP_ERROR(old_cache_dir, "rename");
1425                 }
1426                 g_free(new_cache_dir);
1427         }
1428
1429         g_free(old_cache_dir);
1430         g_free(paths[0]);
1431         g_free(newpath);
1432         g_free(real_oldpath);
1433         g_free(real_newpath);
1434
1435         return 0;
1436 }
1437
1438 gint imap_remove_folder(Folder *folder, FolderItem *item)
1439 {
1440         gint ok;
1441         IMAPSession *session;
1442         gchar *path;
1443         gchar *cache_dir;
1444         gint exists, recent, unseen;
1445         guint32 uid_validity;
1446
1447         g_return_val_if_fail(folder != NULL, -1);
1448         g_return_val_if_fail(item != NULL, -1);
1449         g_return_val_if_fail(item->path != NULL, -1);
1450
1451         session = imap_session_get(folder);
1452         if (!session) return -1;
1453
1454         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1455
1456         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1457                               &exists, &recent, &unseen, &uid_validity);
1458         statusbar_pop_all();
1459         if (ok != IMAP_SUCCESS) {
1460                 g_free(path);
1461                 return -1;
1462         }
1463
1464         ok = imap_cmd_delete(SESSION(session)->sock, path);
1465         statusbar_pop_all();
1466         if (ok != IMAP_SUCCESS) {
1467                 log_warning(_("can't delete mailbox\n"));
1468                 g_free(path);
1469                 return -1;
1470         }
1471
1472         g_free(path);
1473         cache_dir = folder_item_get_path(item);
1474         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
1475                 g_warning("can't remove directory '%s'\n", cache_dir);
1476         g_free(cache_dir);
1477         folder_item_remove(item);
1478
1479         return 0;
1480 }
1481
1482 static GSList *imap_get_uncached_messages(IMAPSession *session,
1483                                           FolderItem *item,
1484                                           guint32 first_uid, guint32 last_uid)
1485 {
1486         gchar *tmp;
1487         GSList *newlist = NULL;
1488         GSList *llast = NULL;
1489         GString *str;
1490         MsgInfo *msginfo;
1491
1492         g_return_val_if_fail(session != NULL, NULL);
1493         g_return_val_if_fail(item != NULL, NULL);
1494         g_return_val_if_fail(item->folder != NULL, NULL);
1495         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1496         g_return_val_if_fail(first_uid <= last_uid, NULL);
1497
1498         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1499             != IMAP_SUCCESS) {
1500                 log_warning(_("can't get envelope\n"));
1501                 return NULL;
1502         }
1503
1504         str = g_string_new(NULL);
1505
1506         for (;;) {
1507                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1508                         log_warning(_("error occurred while getting envelope.\n"));
1509                         g_string_free(str, TRUE);
1510                         return newlist;
1511                 }
1512                 strretchomp(tmp);
1513                 if (tmp[0] != '*' || tmp[1] != ' ') {
1514                         log_print("IMAP4< %s\n", tmp);
1515                         g_free(tmp);
1516                         break;
1517                 }
1518                 if (strstr(tmp, "FETCH") == NULL) {
1519                         log_print("IMAP4< %s\n", tmp);
1520                         g_free(tmp);
1521                         continue;
1522                 }
1523                 /* log_print("IMAP4< %s\n", tmp); */
1524                 debug_print("IMAP4< %s\n", tmp);
1525                 g_string_assign(str, tmp);
1526                 g_free(tmp);
1527
1528                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
1529                 if (!msginfo) {
1530                         log_warning(_("can't parse envelope: %s\n"), str->str);
1531                         continue;
1532                 }
1533                 if (item->stype == F_QUEUE) {
1534                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_QUEUED);
1535                 } else if (item->stype == F_DRAFT) {
1536                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_DRAFT);
1537                 }
1538
1539                 msginfo->folder = item;
1540
1541                 if (!newlist)
1542                         llast = newlist = g_slist_append(newlist, msginfo);
1543                 else {
1544                         llast = g_slist_append(llast, msginfo);
1545                         llast = llast->next;
1546                 }
1547         }
1548
1549         g_string_free(str, TRUE);
1550
1551         return newlist;
1552 }
1553
1554 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
1555                                            guint32 first_uid, guint32 last_uid)
1556 {
1557         GSList *cur, *next;
1558         MsgInfo *msginfo;
1559         gchar *dir;
1560
1561         g_return_val_if_fail(item != NULL, mlist);
1562         g_return_val_if_fail(item->folder != NULL, mlist);
1563         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
1564
1565         debug_print(_("Deleting cached messages %d - %d ... "),
1566                     first_uid, last_uid);
1567
1568         dir = folder_item_get_path(item);
1569         remove_numbered_files(dir, first_uid, last_uid);
1570         g_free(dir);
1571
1572         for (cur = mlist; cur != NULL; ) {
1573                 next = cur->next;
1574
1575                 msginfo = (MsgInfo *)cur->data;
1576                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
1577                     msginfo->msgnum <= last_uid) {
1578                         procmsg_msginfo_free(msginfo);
1579                         mlist = g_slist_remove(mlist, msginfo);
1580                 }
1581
1582                 cur = next;
1583         }
1584
1585         debug_print(_("done.\n"));
1586
1587         return mlist;
1588 }
1589
1590 static void imap_delete_all_cached_messages(FolderItem *item)
1591 {
1592         gchar *dir;
1593
1594         g_return_if_fail(item != NULL);
1595         g_return_if_fail(item->folder != NULL);
1596         g_return_if_fail(item->folder->type == F_IMAP);
1597
1598         debug_print(_("Deleting all cached messages... "));
1599
1600         dir = folder_item_get_path(item);
1601         remove_all_numbered_files(dir);
1602         g_free(dir);
1603
1604         debug_print(_("done.\n"));
1605 }
1606
1607 #if USE_SSL
1608 static SockInfo *imap_open_tunnel(const gchar *server,
1609                            const gchar *tunnelcmd,
1610                            SSLType ssl_type)
1611 #else
1612 static SockInfo *imap_open_tunnel(const gchar *server,
1613                            const gchar *tunnelcmd)
1614 #endif
1615 {
1616         SockInfo *sock;
1617
1618         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1619                 log_warning(_("Can't establish IMAP4 session with: %s\n"),
1620                             server);
1621                 return NULL;
1622 #if USE_SSL
1623         return imap_init_sock(sock, ssl_type);
1624 #else
1625         return imap_init_sock(sock);
1626 #endif
1627 }
1628
1629
1630 #if USE_SSL
1631 static SockInfo *imap_open(const gchar *server, gushort port,
1632                            SSLType ssl_type)
1633 #else
1634 static SockInfo *imap_open(const gchar *server, gushort port)
1635 #endif
1636 {
1637         SockInfo *sock;
1638
1639         if ((sock = sock_connect(server, port)) == NULL) {
1640                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1641                             server, port);
1642                 return NULL;
1643         }
1644
1645 #if USE_SSL
1646         if (ssl_type == SSL_TUNNEL && !ssl_init_socket(sock)) {
1647                 log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
1648                             server, port);
1649                 sock_close(sock);
1650                 return NULL;
1651         }
1652         return imap_init_sock(sock, ssl_type);
1653 #else
1654         return imap_init_sock(sock);
1655 #endif
1656 }
1657
1658 #if USE_SSL
1659 static SockInfo *imap_init_sock(SockInfo *sock, SSLType ssl_type)
1660 #else
1661 static SockInfo *imap_init_sock(SockInfo *sock)
1662 #endif
1663 {
1664         imap_cmd_count = 0;
1665 #if USE_SSL
1666         if (ssl_type == SSL_STARTTLS) {
1667                 gint ok;
1668
1669                 ok = imap_cmd_starttls(sock);
1670                 if (ok != IMAP_SUCCESS) {
1671                         log_warning(_("Can't start TLS session.\n"));
1672                         sock_close(sock);
1673                         return NULL;
1674                 }
1675                 if (!ssl_init_socket_with_method(sock, SSL_METHOD_TLSv1)) {
1676                         sock_close(sock);
1677                         return NULL;
1678                 }
1679         }
1680 #endif
1681
1682         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1683                 log_warning(_("Can't establish IMAP4 session. \n"));
1684                 sock_close(sock);
1685                 return NULL;
1686         }
1687
1688         return sock;
1689 }
1690
1691 static GList *imap_parse_namespace_str(gchar *str)
1692 {
1693         gchar *p = str;
1694         gchar *name;
1695         gchar *separator;
1696         IMAPNameSpace *namespace;
1697         GList *ns_list = NULL;
1698
1699         while (*p != '\0') {
1700                 /* parse ("#foo" "/") */
1701
1702                 while (*p && *p != '(') p++;
1703                 if (*p == '\0') break;
1704                 p++;
1705
1706                 while (*p && *p != '"') p++;
1707                 if (*p == '\0') break;
1708                 p++;
1709                 name = p;
1710
1711                 while (*p && *p != '"') p++;
1712                 if (*p == '\0') break;
1713                 *p = '\0';
1714                 p++;
1715
1716                 while (*p && isspace(*p)) p++;
1717                 if (*p == '\0') break;
1718                 if (strncmp(p, "NIL", 3) == 0)
1719                         separator = NULL;
1720                 else if (*p == '"') {
1721                         p++;
1722                         separator = p;
1723                         while (*p && *p != '"') p++;
1724                         if (*p == '\0') break;
1725                         *p = '\0';
1726                         p++;
1727                 } else break;
1728
1729                 while (*p && *p != ')') p++;
1730                 if (*p == '\0') break;
1731                 p++;
1732
1733                 namespace = g_new(IMAPNameSpace, 1);
1734                 namespace->name = g_strdup(name);
1735                 namespace->separator = separator ? separator[0] : '\0';
1736                 ns_list = g_list_append(ns_list, namespace);
1737         }
1738
1739         return ns_list;
1740 }
1741
1742 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1743 {
1744         gchar *ns_str;
1745         gchar **str_array;
1746
1747         g_return_if_fail(session != NULL);
1748         g_return_if_fail(folder != NULL);
1749
1750         if (folder->ns_personal != NULL ||
1751             folder->ns_others   != NULL ||
1752             folder->ns_shared   != NULL)
1753                 return;
1754
1755         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1756             != IMAP_SUCCESS) {
1757                 log_warning(_("can't get namespace\n"));
1758                 return;
1759         }
1760
1761         str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
1762         if (str_array[0])
1763                 folder->ns_personal = imap_parse_namespace_str(str_array[0]);
1764         if (str_array[0] && str_array[1])
1765                 folder->ns_others = imap_parse_namespace_str(str_array[1]);
1766         if (str_array[0] && str_array[1] && str_array[2])
1767                 folder->ns_shared = imap_parse_namespace_str(str_array[2]);
1768         g_strfreev(str_array);
1769         return;
1770 }
1771
1772 static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
1773                                                     const gchar *path)
1774 {
1775         IMAPNameSpace *namespace = NULL;
1776         gchar *tmp_path, *name;
1777
1778         if (!path) path = "";
1779
1780         Xstrcat_a(tmp_path, path, "/", return NULL);
1781
1782         for (; ns_list != NULL; ns_list = ns_list->next) {
1783                 IMAPNameSpace *tmp_ns = ns_list->data;
1784
1785                 Xstrdup_a(name, tmp_ns->name, return namespace);
1786                 if (tmp_ns->separator && tmp_ns->separator != '/')
1787                         subst_char(name, tmp_ns->separator, '/');
1788                 if (strncmp(tmp_path, name, strlen(name)) == 0)
1789                         namespace = tmp_ns;
1790         }
1791
1792         return namespace;
1793 }
1794
1795 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1796                                           const gchar *path)
1797 {
1798         IMAPNameSpace *namespace;
1799
1800         g_return_val_if_fail(folder != NULL, NULL);
1801
1802         namespace = imap_find_namespace_from_list(folder->ns_personal, path);
1803         if (namespace) return namespace;
1804         namespace = imap_find_namespace_from_list(folder->ns_others, path);
1805         if (namespace) return namespace;
1806         namespace = imap_find_namespace_from_list(folder->ns_shared, path);
1807         if (namespace) return namespace;
1808
1809         return NULL;
1810 }
1811
1812 static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
1813 {
1814         IMAPNameSpace *namespace;
1815         gchar separator = '/';
1816
1817         namespace = imap_find_namespace(folder, path);
1818         if (namespace && namespace->separator)
1819                 separator = namespace->separator;
1820
1821         return separator;
1822 }
1823
1824 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1825 {
1826         gchar *real_path;
1827         gchar separator;
1828
1829         g_return_val_if_fail(folder != NULL, NULL);
1830         g_return_val_if_fail(path != NULL, NULL);
1831
1832         real_path = imap_locale_to_modified_utf7(path);
1833         separator = imap_get_path_separator(folder, path);
1834         imap_path_separator_subst(real_path, separator);
1835
1836         return real_path;
1837 }
1838
1839 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1840                               gchar *dest, gint dest_len, GString *str)
1841 {
1842         gchar *cur_pos = src;
1843         gchar *nextline;
1844
1845         g_return_val_if_fail(str != NULL, cur_pos);
1846
1847         /* read the next line if the current response buffer is empty */
1848         while (isspace(*cur_pos)) cur_pos++;
1849         while (*cur_pos == '\0') {
1850                 if ((nextline = sock_getline(sock)) == NULL)
1851                         return cur_pos;
1852                 g_string_assign(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
1859                 while (isspace(*cur_pos)) cur_pos++;
1860         }
1861
1862         if (!strncmp(cur_pos, "NIL", 3)) {
1863                 *dest = '\0';
1864                 cur_pos += 3;
1865         } else if (*cur_pos == '\"') {
1866                 gchar *p;
1867
1868                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1869                 cur_pos = p ? p : cur_pos + 2;
1870         } else if (*cur_pos == '{') {
1871                 gchar buf[32];
1872                 gint len;
1873                 gint line_len = 0;
1874
1875                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1876                 len = atoi(buf);
1877
1878                 g_string_truncate(str, 0);
1879                 cur_pos = str->str;
1880
1881                 do {
1882                         if ((nextline = sock_getline(sock)) == NULL)
1883                                 return cur_pos;
1884                         line_len += strlen(nextline);
1885                         g_string_append(str, nextline);
1886                         cur_pos = str->str;
1887                         strretchomp(nextline);
1888                         /* log_print("IMAP4< %s\n", nextline); */
1889                         debug_print("IMAP4< %s\n", nextline);
1890                         g_free(nextline);
1891                 } while (line_len < len);
1892
1893                 memcpy(dest, cur_pos, MIN(len, dest_len - 1));
1894                 dest[MIN(len, dest_len - 1)] = '\0';
1895                 cur_pos += len;
1896         }
1897
1898         return cur_pos;
1899 }
1900
1901 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1902                                      gchar *out_from_str,
1903                                      gchar *out_fromname_str,
1904                                      GString *str)
1905 {
1906         gchar buf[IMAPBUFSIZE];
1907         gchar *userid;
1908         gchar *domain;
1909         gchar *cur_pos = start;
1910
1911         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1912         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1913
1914         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1915
1916         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1917         Xstrdup_a(userid, buf, return cur_pos + 1);
1918
1919         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1920         Xstrdup_a(domain, buf, return cur_pos + 1);
1921
1922         if (out_fromname_str[0] != '\0') {
1923                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1924                            out_fromname_str, userid, domain);
1925         } else {
1926                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1927                            userid, domain);
1928                 strcpy(out_fromname_str, out_from_str);
1929         }
1930
1931         while (*cur_pos == ' ') cur_pos++;
1932         g_return_val_if_fail(*cur_pos == ')', NULL);
1933
1934         return cur_pos + 1;
1935 }
1936
1937 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1938                                  gchar **out_from_str,
1939                                  gchar **out_fromname_str,
1940                                  GString *str)
1941 {
1942         gchar buf[IMAPBUFSIZE];
1943         gchar name_buf[IMAPBUFSIZE];
1944         gchar *cur_pos = start;
1945         GString *addr_str;
1946
1947         if (out_from_str)     *out_from_str     = NULL;
1948         if (out_fromname_str) *out_fromname_str = NULL;
1949         buf[0] = name_buf[0] = '\0';
1950
1951         if (!strncmp(cur_pos, "NIL", 3)) {
1952                 if (out_from_str)     *out_from_str     = g_strdup("");
1953                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1954                 return cur_pos + 3;
1955         }
1956
1957         g_return_val_if_fail(*cur_pos == '(', NULL);
1958         cur_pos++;
1959
1960         addr_str = g_string_new(NULL);
1961
1962         for (;;) {
1963                 gchar ch = *cur_pos++;
1964                 if (ch == ')') break;
1965                 if (ch == '(') {
1966                         cur_pos = imap_parse_one_address
1967                                 (sock, cur_pos, buf, name_buf, str);
1968                         if (!cur_pos) {
1969                                 g_string_free(addr_str, TRUE);
1970                                 return NULL;
1971                         }
1972                         if (addr_str->str[0] != '\0')
1973                                 g_string_append(addr_str, ", ");
1974                         g_string_append(addr_str, buf);
1975                 }
1976         }
1977
1978         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1979         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1980
1981         g_string_free(addr_str, TRUE);
1982
1983         return cur_pos;
1984 }
1985
1986 static MsgFlags imap_parse_flags(const gchar *flag_str)
1987 {
1988         const gchar *p = flag_str;
1989         MsgFlags flags;
1990
1991         flags.perm_flags = MSG_UNREAD;
1992         flags.tmp_flags  = MSG_IMAP;
1993
1994         while ((p = strchr(p, '\\')) != NULL) {
1995                 p++;
1996
1997                 if (g_strncasecmp(p, "Recent", 6) == 0 && MSG_IS_UNREAD(flags)) {
1998                         MSG_SET_PERM_FLAGS(flags, MSG_NEW);
1999                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
2000                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
2001                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
2002                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
2003                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
2004                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
2005                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
2006                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
2007                 }
2008         }
2009
2010         return flags;
2011 }
2012
2013 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
2014 {
2015         MsgInfo *msginfo;
2016         gchar buf[IMAPBUFSIZE];
2017         gchar tmp[IMAPBUFSIZE];
2018         gchar *cur_pos;
2019         gint msgnum;
2020         guint32 uid = 0;
2021         size_t size = 0;
2022         gchar *date = NULL;
2023         time_t date_t = 0;
2024         gchar *subject = NULL;
2025         gchar *tmp_from;
2026         gchar *tmp_fromname;
2027         gchar *from = NULL;
2028         gchar *fromname = NULL;
2029         gchar *tmp_to;
2030         gchar *to = NULL;
2031         gchar *inreplyto = NULL;
2032         gchar *msgid = NULL;
2033         MsgFlags flags = {0, 0};
2034
2035         g_return_val_if_fail(line_str != NULL, NULL);
2036         g_return_val_if_fail(line_str->str[0] == '*' &&
2037                              line_str->str[1] == ' ', NULL);
2038
2039         cur_pos = line_str->str + 2;
2040
2041 #define PARSE_ONE_ELEMENT(ch) \
2042 { \
2043         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
2044         g_return_val_if_fail(cur_pos != NULL, NULL); \
2045 }
2046
2047         PARSE_ONE_ELEMENT(' ');
2048         msgnum = atoi(buf);
2049
2050         PARSE_ONE_ELEMENT(' ');
2051         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
2052
2053         g_return_val_if_fail(*cur_pos == '(', NULL);
2054         cur_pos++;
2055
2056         while (*cur_pos != '\0' && *cur_pos != ')') {
2057                 while (*cur_pos == ' ') cur_pos++;
2058
2059                 if (!strncmp(cur_pos, "UID ", 4)) {
2060                         cur_pos += 4;
2061                         uid = strtoul(cur_pos, &cur_pos, 10);
2062                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
2063                         cur_pos += 6;
2064                         g_return_val_if_fail(*cur_pos == '(', NULL);
2065                         cur_pos++;
2066                         PARSE_ONE_ELEMENT(')');
2067                         flags = imap_parse_flags(buf);
2068                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
2069                         cur_pos += 12;
2070                         size = strtol(cur_pos, &cur_pos, 10);
2071                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
2072                         cur_pos += 9;
2073                         g_return_val_if_fail(*cur_pos == '(', NULL);
2074                         cur_pos = imap_parse_atom
2075                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
2076                         if (buf[0] != '\0') {
2077                                 Xstrdup_a(date, buf, return NULL);
2078                                 date_t = procheader_date_parse(NULL, date, 0);
2079                         }
2080
2081                         cur_pos = imap_parse_atom
2082                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2083                         if (buf[0] != '\0') {
2084                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
2085                                 Xstrdup_a(subject, tmp, return NULL);
2086                         }
2087
2088                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2089                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2090                                                      &tmp_from, &tmp_fromname,
2091                                                      line_str);
2092                         g_return_val_if_fail(cur_pos != NULL, NULL);
2093                         if (tmp_from && *tmp_from != '\0')
2094                                 Xstrdup_a(from, tmp_from,
2095                                           {g_free(tmp_from);
2096                                            g_free(tmp_fromname);
2097                                            return NULL;});
2098                         if (tmp_fromname && *tmp_fromname != '\0')
2099                                 Xstrdup_a(fromname, tmp_fromname,
2100                                           {g_free(tmp_from);
2101                                            g_free(tmp_fromname);
2102                                            return NULL;});
2103                         g_free(tmp_from);
2104                         g_free(tmp_fromname);
2105
2106 #define SKIP_ONE_ELEMENT() \
2107 { \
2108         g_return_val_if_fail(*cur_pos == ' ', NULL); \
2109         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
2110                                      line_str); \
2111         g_return_val_if_fail(cur_pos != NULL, NULL); \
2112 }
2113
2114                         /* skip sender and reply-to */
2115                         SKIP_ONE_ELEMENT();
2116                         SKIP_ONE_ELEMENT();
2117
2118                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2119                         cur_pos = imap_parse_address(sock, cur_pos + 1,
2120                                                      &tmp_to, NULL, line_str);
2121                         g_return_val_if_fail(cur_pos != NULL, NULL);
2122                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
2123                         g_free(tmp_to);
2124
2125                         /* skip Cc and Bcc */
2126                         SKIP_ONE_ELEMENT();
2127                         SKIP_ONE_ELEMENT();
2128
2129 #undef SKIP_ONE_ELEMENT
2130
2131                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2132                         cur_pos = imap_parse_atom
2133                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2134                         g_return_val_if_fail(cur_pos != NULL, NULL);
2135                         if (buf[0] != '\0') {
2136                                 eliminate_parenthesis(buf, '(', ')');
2137                                 extract_parenthesis(buf, '<', '>');
2138                                 remove_space(buf);
2139                                 Xstrdup_a(inreplyto, buf, return NULL);
2140                         }
2141
2142                         g_return_val_if_fail(*cur_pos == ' ', NULL);
2143                         cur_pos = imap_parse_atom
2144                                 (sock, cur_pos, buf, sizeof(buf), line_str);
2145                         g_return_val_if_fail(cur_pos != NULL, NULL);
2146                         if (buf[0] != '\0') {
2147                                 extract_parenthesis(buf, '<', '>');
2148                                 remove_space(buf);
2149                                 Xstrdup_a(msgid, buf, return NULL);
2150                         }
2151
2152                         g_return_val_if_fail(*cur_pos == ')', NULL);
2153                         cur_pos++;
2154                 } else {
2155                         g_warning("invalid FETCH response: %s\n", cur_pos);
2156                         break;
2157                 }
2158         }
2159
2160         msginfo = g_new0(MsgInfo, 1);
2161         msginfo->msgnum = uid;
2162         msginfo->size = size;
2163         msginfo->date = g_strdup(date);
2164         msginfo->date_t = date_t;
2165         msginfo->subject = g_strdup(subject);
2166         msginfo->from = g_strdup(from);
2167         msginfo->fromname = g_strdup(fromname);
2168         msginfo->to = g_strdup(to);
2169         msginfo->inreplyto = g_strdup(inreplyto);
2170         msginfo->msgid = g_strdup(msgid);
2171         msginfo->flags = flags;
2172
2173         return msginfo;
2174 }
2175
2176 gint imap_msg_set_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, TRUE);
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                                             FALSE);
2206         return ok;
2207 }
2208
2209 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2210 {
2211         Folder *folder;
2212         IMAPSession *session;
2213         IMAPFlags iflags = 0;
2214         gint ok = IMAP_SUCCESS;
2215
2216         g_return_val_if_fail(msginfo != NULL, -1);
2217         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
2218         g_return_val_if_fail(msginfo->folder != NULL, -1);
2219         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2220
2221         folder = msginfo->folder->folder;
2222         g_return_val_if_fail(folder->type == F_IMAP, -1);
2223
2224         session = imap_session_get(folder);
2225         if (!session) return -1;
2226
2227         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2228         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2229         if (iflags) {
2230                 ok = imap_set_message_flags(session, msginfo->msgnum,
2231                                             msginfo->msgnum, iflags, FALSE);
2232                 if (ok != IMAP_SUCCESS) return ok;
2233         }
2234
2235         if (flags & MSG_UNREAD)
2236                 ok = imap_set_message_flags(session, msginfo->msgnum,
2237                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2238                                             TRUE);
2239         return ok;
2240 }
2241
2242 static gint imap_set_message_flags(IMAPSession *session,
2243                                    guint32 first_uid,
2244                                    guint32 last_uid,
2245                                    IMAPFlags flags,
2246                                    gboolean is_set)
2247 {
2248         GString *buf;
2249         gint ok;
2250
2251         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
2252
2253         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
2254         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
2255         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
2256         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
2257         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
2258
2259         if (buf->str[buf->len - 1] == ' ')
2260                 g_string_truncate(buf, buf->len - 1);
2261
2262         g_string_append_c(buf, ')');
2263
2264         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
2265                             buf->str);
2266         g_string_free(buf, TRUE);
2267
2268         return ok;
2269 }
2270
2271 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
2272                         const gchar *path,
2273                         gint *exists, gint *recent, gint *unseen,
2274                         guint32 *uid_validity)
2275 {
2276         gchar *real_path;
2277         gint ok;
2278         gint exists_, recent_, unseen_, uid_validity_;
2279
2280         if (!exists || !recent || !unseen || !uid_validity) {
2281                 if (session->mbox && strcmp(session->mbox, path) == 0)
2282                         return IMAP_SUCCESS;
2283                 exists = &exists_;
2284                 recent = &recent_;
2285                 unseen = &unseen_;
2286                 uid_validity = &uid_validity_;
2287         }
2288
2289         g_free(session->mbox);
2290         session->mbox = NULL;
2291
2292         real_path = imap_get_real_path(folder, path);
2293         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2294                              exists, recent, unseen, uid_validity);
2295         if (ok != IMAP_SUCCESS)
2296                 log_warning(_("can't select folder: %s\n"), real_path);
2297         else
2298                 session->mbox = g_strdup(path);
2299         g_free(real_path);
2300
2301         return ok;
2302 }
2303
2304 #define THROW(err) { ok = err; goto catch; }
2305
2306 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
2307 {
2308         gint ok;
2309         GPtrArray *argbuf;
2310         gchar *str;
2311         gint num;
2312
2313         *uid = 0;
2314         argbuf = g_ptr_array_new();
2315
2316         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
2317         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
2318                 THROW(ok);
2319
2320         str = search_array_contain_str(argbuf, "FETCH");
2321         if (!str) THROW(IMAP_ERROR);
2322
2323         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
2324             num != msgnum) {
2325                 g_warning("imap_get_uid(): invalid FETCH line.\n");
2326                 THROW(IMAP_ERROR);
2327         }
2328
2329 catch:
2330         ptr_array_free_strings(argbuf);
2331         g_ptr_array_free(argbuf, TRUE);
2332
2333         return ok;
2334 }
2335
2336 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2337                         const gchar *path,
2338                         gint *messages, gint *recent,
2339                         guint32 *uid_next, guint32 *uid_validity,
2340                         gint *unseen)
2341 {
2342         gchar *real_path;
2343         gchar *real_path_;
2344         gint ok;
2345         GPtrArray *argbuf;
2346         gchar *str;
2347
2348         *messages = *recent = *uid_next = *uid_validity = *unseen = 0;
2349
2350         argbuf = g_ptr_array_new();
2351
2352         real_path = imap_get_real_path(folder, path);
2353         QUOTE_IF_REQUIRED(real_path_, real_path);
2354         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2355                           "(MESSAGES RECENT UIDNEXT UIDVALIDITY UNSEEN)",
2356                           real_path_);
2357
2358         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2359         if (ok != IMAP_SUCCESS) THROW(ok);
2360
2361         str = search_array_str(argbuf, "STATUS");
2362         if (!str) THROW(IMAP_ERROR);
2363
2364         str = strchr(str, '(');
2365         if (!str) THROW(IMAP_ERROR);
2366         str++;
2367         while (*str != '\0' && *str != ')') {
2368                 while (*str == ' ') str++;
2369
2370                 if (!strncmp(str, "MESSAGES ", 9)) {
2371                         str += 9;
2372                         *messages = strtol(str, &str, 10);
2373                 } else if (!strncmp(str, "RECENT ", 7)) {
2374                         str += 7;
2375                         *recent = strtol(str, &str, 10);
2376                 } else if (!strncmp(str, "UIDNEXT ", 8)) {
2377                         str += 8;
2378                         *uid_next = strtoul(str, &str, 10);
2379                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2380                         str += 12;
2381                         *uid_validity = strtoul(str, &str, 10);
2382                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2383                         str += 7;
2384                         *unseen = strtol(str, &str, 10);
2385                 } else {
2386                         g_warning("invalid STATUS response: %s\n", str);
2387                         break;
2388                 }
2389         }
2390
2391 catch:
2392         g_free(real_path);
2393         ptr_array_free_strings(argbuf);
2394         g_ptr_array_free(argbuf, TRUE);
2395
2396         return ok;
2397 }
2398
2399 #undef THROW
2400
2401
2402 /* low-level IMAP4rev1 commands */
2403
2404 static gint imap_cmd_login(SockInfo *sock,
2405                            const gchar *user, const gchar *pass)
2406 {
2407         gchar *user_, *pass_;
2408         gint ok;
2409
2410         QUOTE_IF_REQUIRED(user_, user);
2411         QUOTE_IF_REQUIRED(pass_, pass);
2412         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2413
2414         ok = imap_cmd_ok(sock, NULL);
2415         if (ok != IMAP_SUCCESS)
2416                 log_warning(_("IMAP4 login failed.\n"));
2417
2418         return ok;
2419 }
2420
2421 static gint imap_cmd_logout(SockInfo *sock)
2422 {
2423         imap_cmd_gen_send(sock, "LOGOUT");
2424         return imap_cmd_ok(sock, NULL);
2425 }
2426
2427 /* Send a NOOP, and examine the server's response to see whether this
2428  * connection is pre-authenticated or not. */
2429 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2430 {
2431         GPtrArray *argbuf;
2432         gint r;
2433
2434         imap_cmd_gen_send(sock, "NOOP");
2435         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2436         r = imap_cmd_ok(sock, argbuf);
2437         *is_preauth = search_array_starts(argbuf, "PREAUTH") != NULL;
2438
2439         return r;
2440 }
2441
2442 static gint imap_cmd_noop(SockInfo *sock)
2443 {
2444         imap_cmd_gen_send(sock, "NOOP");
2445         return imap_cmd_ok(sock, NULL);
2446 }
2447
2448 static gint imap_cmd_starttls(SockInfo *sock)
2449 {
2450         imap_cmd_gen_send(sock, "STARTTLS");
2451         return imap_cmd_ok(sock, NULL);
2452 }
2453
2454 #define THROW(err) { ok = err; goto catch; }
2455
2456 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2457 {
2458         gint ok;
2459         GPtrArray *argbuf;
2460         gchar *str;
2461
2462         argbuf = g_ptr_array_new();
2463
2464         imap_cmd_gen_send(sock, "NAMESPACE");
2465         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2466
2467         str = search_array_str(argbuf, "NAMESPACE");
2468         if (!str) THROW(IMAP_ERROR);
2469
2470         *ns_str = g_strdup(str);
2471
2472 catch:
2473         ptr_array_free_strings(argbuf);
2474         g_ptr_array_free(argbuf, TRUE);
2475
2476         return ok;
2477 }
2478
2479 #undef THROW
2480
2481 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2482                           const gchar *mailbox, GPtrArray *argbuf)
2483 {
2484         gchar *ref_, *mailbox_;
2485
2486         if (!ref) ref = "\"\"";
2487         if (!mailbox) mailbox = "\"\"";
2488
2489         QUOTE_IF_REQUIRED(ref_, ref);
2490         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2491         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2492
2493         return imap_cmd_ok(sock, argbuf);
2494 }
2495
2496 #define THROW goto catch
2497
2498 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2499                                gboolean examine,
2500                                gint *exists, gint *recent, gint *unseen,
2501                                guint32 *uid_validity)
2502 {
2503         gint ok;
2504         gchar *resp_str;
2505         GPtrArray *argbuf;
2506         gchar *select_cmd;
2507         gchar *folder_;
2508
2509         *exists = *recent = *unseen = *uid_validity = 0;
2510         argbuf = g_ptr_array_new();
2511
2512         if (examine)
2513                 select_cmd = "EXAMINE";
2514         else
2515                 select_cmd = "SELECT";
2516
2517         QUOTE_IF_REQUIRED(folder_, folder);
2518         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2519
2520         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2521
2522         resp_str = search_array_contain_str(argbuf, "EXISTS");
2523         if (resp_str) {
2524                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2525                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2526                         THROW;
2527                 }
2528         }
2529
2530         resp_str = search_array_contain_str(argbuf, "RECENT");
2531         if (resp_str) {
2532                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2533                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2534                         THROW;
2535                 }
2536         }
2537
2538         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2539         if (resp_str) {
2540                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2541                     != 1) {
2542                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2543                         THROW;
2544                 }
2545         }
2546
2547         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2548         if (resp_str) {
2549                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2550                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2551                         THROW;
2552                 }
2553         }
2554
2555 catch:
2556         ptr_array_free_strings(argbuf);
2557         g_ptr_array_free(argbuf, TRUE);
2558
2559         return ok;
2560 }
2561
2562 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2563                             gint *exists, gint *recent, gint *unseen,
2564                             guint32 *uid_validity)
2565 {
2566         return imap_cmd_do_select(sock, folder, FALSE,
2567                                   exists, recent, unseen, uid_validity);
2568 }
2569
2570 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2571                              gint *exists, gint *recent, gint *unseen,
2572                              guint32 *uid_validity)
2573 {
2574         return imap_cmd_do_select(sock, folder, TRUE,
2575                                   exists, recent, unseen, uid_validity);
2576 }
2577
2578 #undef THROW
2579
2580 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2581 {
2582         gchar *folder_;
2583
2584         QUOTE_IF_REQUIRED(folder_, folder);
2585         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2586
2587         return imap_cmd_ok(sock, NULL);
2588 }
2589
2590 static gint imap_cmd_rename(SockInfo *sock, const gchar *old_folder,
2591                             const gchar *new_folder)
2592 {
2593         gchar *old_folder_, *new_folder_;
2594
2595         QUOTE_IF_REQUIRED(old_folder_, old_folder);
2596         QUOTE_IF_REQUIRED(new_folder_, new_folder);
2597         imap_cmd_gen_send(sock, "RENAME %s %s", old_folder_, new_folder_);
2598
2599         return imap_cmd_ok(sock, NULL);
2600 }
2601
2602 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2603 {
2604         gchar *folder_;
2605
2606         QUOTE_IF_REQUIRED(folder_, folder);
2607         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2608
2609         return imap_cmd_ok(sock, NULL);
2610 }
2611
2612 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2613 {
2614         gint ok;
2615         gchar buf[IMAPBUFSIZE];
2616         gchar *cur_pos;
2617         gchar size_str[32];
2618         glong size_num;
2619
2620         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2621
2622         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2623
2624         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2625                == IMAP_SUCCESS) {
2626                 if (buf[0] != '*' || buf[1] != ' ')
2627                         return IMAP_ERROR;
2628                 if (strstr(buf, "FETCH") != NULL)
2629                         break;
2630         }
2631         if (ok != IMAP_SUCCESS)
2632                 return ok;
2633
2634         cur_pos = strchr(buf, '{');
2635         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2636         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2637         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2638         size_num = atol(size_str);
2639
2640         if (*cur_pos != '\0') return IMAP_ERROR;
2641
2642         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
2643                 return IMAP_ERROR;
2644
2645         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
2646                 return IMAP_ERROR;
2647
2648         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
2649                 return IMAP_ERROR;
2650
2651         ok = imap_cmd_ok(sock, NULL);
2652
2653         return ok;
2654 }
2655
2656 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2657                             const gchar *file)
2658 {
2659         gint ok;
2660         gint size;
2661         gchar *destfolder_;
2662         gchar buf[BUFFSIZE];
2663         FILE *fp;
2664
2665         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2666
2667         size = get_file_size_as_crlf(file);
2668         if ((fp = fopen(file, "rb")) == NULL) {
2669                 FILE_OP_ERROR(file, "fopen");
2670                 return -1;
2671         }
2672         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2673         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2674
2675         ok = imap_cmd_gen_recv(sock, buf, sizeof(buf));
2676         if (ok != IMAP_SUCCESS || buf[0] != '+' || buf[1] != ' ') {
2677                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2678                 fclose(fp);
2679                 return IMAP_ERROR;
2680         }
2681
2682         log_print("IMAP4> %s\n", _("(sending file...)"));
2683
2684         while (fgets(buf, sizeof(buf), fp) != NULL) {
2685                 strretchomp(buf);
2686                 if (sock_puts(sock, buf) < 0) {
2687                         fclose(fp);
2688                         sock_close(sock);
2689                         return -1;
2690                 }
2691         }
2692
2693         if (ferror(fp)) {
2694                 FILE_OP_ERROR(file, "fgets");
2695                 fclose(fp);
2696                 sock_close(sock);
2697                 return -1;
2698         }
2699
2700         sock_puts(sock, "");
2701
2702         fclose(fp);
2703         return imap_cmd_ok(sock, NULL);
2704 }
2705
2706 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
2707 {
2708         gint ok;
2709         gchar *destfolder_;
2710
2711         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2712
2713         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2714         imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder_);
2715
2716         ok = imap_cmd_ok(sock, NULL);
2717         if (ok != IMAP_SUCCESS) {
2718                 log_warning(_("can't copy %d to %s\n"), uid, destfolder_);
2719                 return -1;
2720         }
2721
2722         return ok;
2723 }
2724
2725 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2726 {
2727         imap_cmd_gen_send
2728                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
2729                  first_uid, last_uid);
2730
2731         return IMAP_SUCCESS;
2732 }
2733
2734 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2735                            gchar *sub_cmd)
2736 {
2737         gint ok;
2738
2739         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2740                           first_uid, last_uid, sub_cmd);
2741
2742         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2743                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2744                             first_uid, last_uid, sub_cmd);
2745                 return ok;
2746         }
2747
2748         return IMAP_SUCCESS;
2749 }
2750
2751 static gint imap_cmd_expunge(SockInfo *sock)
2752 {
2753         gint ok;
2754
2755         imap_cmd_gen_send(sock, "EXPUNGE");
2756         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2757                 log_warning(_("error while imap command: EXPUNGE\n"));
2758                 return ok;
2759         }
2760
2761         return IMAP_SUCCESS;
2762 }
2763
2764 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2765 {
2766         gint ok;
2767         gchar buf[IMAPBUFSIZE];
2768         gint cmd_num;
2769         gchar cmd_status[IMAPBUFSIZE];
2770
2771         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2772                == IMAP_SUCCESS) {
2773                 if (buf[0] == '*' && buf[1] == ' ') {
2774                         if (argbuf)
2775                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2776                         continue;
2777                 }
2778
2779                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2780                         return IMAP_ERROR;
2781                 else if (cmd_num == imap_cmd_count &&
2782                          !strcmp(cmd_status, "OK")) {
2783                         if (argbuf)
2784                                 g_ptr_array_add(argbuf, g_strdup(buf));
2785                         return IMAP_SUCCESS;
2786                 } else
2787                         return IMAP_ERROR;
2788         }
2789
2790         return ok;
2791 }
2792
2793 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2794 {
2795         gchar buf[IMAPBUFSIZE];
2796         gchar tmp[IMAPBUFSIZE];
2797         gchar *p;
2798         va_list args;
2799
2800         va_start(args, format);
2801         g_vsnprintf(tmp, sizeof(tmp), format, args);
2802         va_end(args);
2803
2804         imap_cmd_count++;
2805
2806         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2807         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2808                 *p = '\0';
2809                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2810         } else
2811                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2812
2813         sock_write(sock, buf, strlen(buf));
2814 }
2815
2816 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
2817 {
2818         if (sock_gets(sock, buf, size) == -1)
2819                 return IMAP_SOCKET;
2820
2821         strretchomp(buf);
2822
2823         log_print("IMAP4< %s\n", buf);
2824
2825         return IMAP_SUCCESS;
2826 }
2827
2828
2829 /* misc utility functions */
2830
2831 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2832 {
2833         gchar *tmp;
2834
2835         dest[0] = '\0';
2836         tmp = strchr(src, ch);
2837         if (!tmp)
2838                 return NULL;
2839
2840         memcpy(dest, src, MIN(tmp - src, len - 1));
2841         dest[MIN(tmp - src, len - 1)] = '\0';
2842
2843         return tmp + 1;
2844 }
2845
2846 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
2847 {
2848         const gchar *p = src;
2849         gint n = 0;
2850
2851         g_return_val_if_fail(*p == ch, NULL);
2852
2853         *dest = '\0';
2854         p++;
2855
2856         while (*p != '\0' && *p != ch) {
2857                 if (n < len - 1) {
2858                         if (*p == '\\' && *(p + 1) != '\0')
2859                                 p++;
2860                         *dest++ = *p++;
2861                 } else
2862                         p++;
2863                 n++;
2864         }
2865
2866         *dest = '\0';
2867         return (gchar *)(*p == ch ? p + 1 : p);
2868 }
2869
2870 static gchar *search_array_starts(GPtrArray *array, const gchar *str)
2871 {
2872         gint i;
2873         size_t len;
2874
2875         g_return_val_if_fail(str != NULL, NULL);
2876         len = strlen(str);
2877         for (i = 0; i < array->len; i++) {
2878                 gchar *tmp;
2879                 tmp = g_ptr_array_index(array, i);
2880                 if (strncmp(tmp, str, len) == 0)
2881                         return tmp;
2882         }
2883         return NULL;
2884 }
2885
2886 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
2887 {
2888         gint i;
2889
2890         for (i = 0; i < array->len; i++) {
2891                 gchar *tmp;
2892
2893                 tmp = g_ptr_array_index(array, i);
2894                 if (strstr(tmp, str) != NULL)
2895                         return tmp;
2896         }
2897
2898         return NULL;
2899 }
2900
2901 static gchar *search_array_str(GPtrArray *array, gchar *str)
2902 {
2903         gint i;
2904         gint len;
2905
2906         len = strlen(str);
2907
2908         for (i = 0; i < array->len; i++) {
2909                 gchar *tmp;
2910
2911                 tmp = g_ptr_array_index(array, i);
2912                 if (!strncmp(tmp, str, len))
2913                         return tmp;
2914         }
2915
2916         return NULL;
2917 }
2918
2919 static void imap_path_separator_subst(gchar *str, gchar separator)
2920 {
2921         gchar *p;
2922         gboolean in_escape = FALSE;
2923
2924         if (!separator || separator == '/') return;
2925
2926         for (p = str; *p != '\0'; p++) {
2927                 if (*p == '/' && !in_escape)
2928                         *p = separator;
2929                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
2930                         in_escape = TRUE;
2931                 else if (*p == '-' && in_escape)
2932                         in_escape = FALSE;
2933         }
2934 }
2935
2936 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
2937 {
2938 #if !HAVE_LIBJCONV
2939         return g_strdup(mutf7_str);
2940 #else
2941         static iconv_t cd = (iconv_t)-1;
2942         static gboolean iconv_ok = TRUE;
2943         GString *norm_utf7;
2944         gchar *norm_utf7_p;
2945         size_t norm_utf7_len;
2946         const gchar *p;
2947         gchar *to_str, *to_p;
2948         size_t to_len;
2949         gboolean in_escape = FALSE;
2950
2951         if (!iconv_ok) return g_strdup(mutf7_str);
2952
2953         if (cd == (iconv_t)-1) {
2954                 cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
2955                 if (cd == (iconv_t)-1) {
2956                         g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2957                                   conv_get_current_charset_str());
2958                         iconv_ok = FALSE;
2959                         return g_strdup(mutf7_str);
2960                 }
2961         }
2962
2963         norm_utf7 = g_string_new(NULL);
2964
2965         for (p = mutf7_str; *p != '\0'; p++) {
2966                 /* replace: '&'  -> '+',
2967                             "&-" -> '&',
2968                             escaped ','  -> '/' */
2969                 if (!in_escape && *p == '&') {
2970                         if (*(p + 1) != '-') {
2971                                 g_string_append_c(norm_utf7, '+');
2972                                 in_escape = TRUE;
2973                         } else {
2974                                 g_string_append_c(norm_utf7, '&');
2975                                 p++;
2976                         }
2977                 } else if (in_escape && *p == ',') {
2978                         g_string_append_c(norm_utf7, '/');
2979                 } else if (in_escape && *p == '-') {
2980                         g_string_append_c(norm_utf7, '-');
2981                         in_escape = FALSE;
2982                 } else {
2983                         g_string_append_c(norm_utf7, *p);
2984                 }
2985         }
2986
2987         norm_utf7_p = norm_utf7->str;
2988         norm_utf7_len = norm_utf7->len;
2989         to_len = strlen(mutf7_str) * 5;
2990         to_p = to_str = g_malloc(to_len + 1);
2991
2992         if (iconv(cd, &norm_utf7_p, &norm_utf7_len, &to_p, &to_len) == -1) {
2993                 g_warning(_("iconv cannot convert UTF-7 to %s\n"),
2994                           conv_get_current_charset_str());
2995                 g_string_free(norm_utf7, TRUE);
2996                 g_free(to_str);
2997                 return g_strdup(mutf7_str);
2998         }
2999
3000         /* second iconv() call for flushing */
3001         iconv(cd, NULL, NULL, &to_p, &to_len);
3002         g_string_free(norm_utf7, TRUE);
3003         *to_p = '\0';
3004
3005         return to_str;
3006 #endif /* !HAVE_LIBJCONV */
3007 }
3008
3009 static gchar *imap_locale_to_modified_utf7(const gchar *from)
3010 {
3011 #if !HAVE_LIBJCONV
3012         return g_strdup(from);
3013 #else
3014         static iconv_t cd = (iconv_t)-1;
3015         static gboolean iconv_ok = TRUE;
3016         gchar *norm_utf7, *norm_utf7_p;
3017         size_t from_len, norm_utf7_len;
3018         GString *to_str;
3019         gchar *from_tmp, *to, *p;
3020         gboolean in_escape = FALSE;
3021
3022         if (!iconv_ok) return g_strdup(from);
3023
3024         if (cd == (iconv_t)-1) {
3025                 cd = iconv_open("UTF-7", conv_get_current_charset_str());
3026                 if (cd == (iconv_t)-1) {
3027                         g_warning(_("iconv cannot convert %s to UTF-7\n"),
3028                                   conv_get_current_charset_str());
3029                         iconv_ok = FALSE;
3030                         return g_strdup(from);
3031                 }
3032         }
3033
3034         Xstrdup_a(from_tmp, from, return g_strdup(from));
3035         from_len = strlen(from);
3036         norm_utf7_len = from_len * 5;
3037         Xalloca(norm_utf7, norm_utf7_len + 1, return g_strdup(from));
3038         norm_utf7_p = norm_utf7;
3039
3040 #define IS_PRINT(ch) (isprint(ch) && isascii(ch))
3041
3042         while (from_len > 0) {
3043                 if (IS_PRINT(*from_tmp)) {
3044                         /* printable ascii char */
3045                         *norm_utf7_p = *from_tmp;
3046                         norm_utf7_p++;
3047                         from_tmp++;
3048                         from_len--;
3049                 } else {
3050                         size_t mblen;
3051
3052                         /* unprintable char: convert to UTF-7 */
3053                         for (mblen = 0;
3054                              !IS_PRINT(from_tmp[mblen]) && mblen < from_len;
3055                              mblen++)
3056                                 ;
3057                         from_len -= mblen;
3058                         if (iconv(cd, &from_tmp, &mblen,
3059                                   &norm_utf7_p, &norm_utf7_len) == -1) {
3060                                 g_warning(_("iconv cannot convert %s to UTF-7\n"),
3061                                           conv_get_current_charset_str());
3062                                 return g_strdup(from);
3063                         }
3064
3065                         /* second iconv() call for flushing */
3066                         iconv(cd, NULL, NULL, &norm_utf7_p, &norm_utf7_len);
3067                 }
3068         }
3069
3070 #undef IS_PRINT
3071
3072         *norm_utf7_p = '\0';
3073         to_str = g_string_new(NULL);
3074         for (p = norm_utf7; p < norm_utf7_p; p++) {
3075                 /* replace: '&' -> "&-",
3076                             '+' -> '&',
3077                             escaped '/' -> ',' */
3078                 if (!in_escape && *p == '&') {
3079                         g_string_append(to_str, "&-");
3080                 } else if (!in_escape && *p == '+') {
3081                         g_string_append_c(to_str, '&');
3082                         in_escape = TRUE;
3083                 } else if (in_escape && *p == '/') {
3084                         g_string_append_c(to_str, ',');
3085                 } else if (in_escape && *p == '-') {
3086                         in_escape = FALSE;
3087                         g_string_append_c(to_str, '-');
3088                 } else {
3089                         g_string_append_c(to_str, *p);
3090                 }
3091         }
3092
3093         if (in_escape) {
3094                 in_escape = FALSE;
3095                 g_string_append_c(to_str, '-');
3096         }
3097
3098         to = to_str->str;
3099         g_string_free(to_str, FALSE);
3100
3101         return to;
3102 #endif
3103 }
3104
3105 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
3106 {
3107         FolderItem *item = node->data;
3108         gchar **paths = data;
3109         const gchar *oldpath = paths[0];
3110         const gchar *newpath = paths[1];
3111         gchar *base;
3112         gchar *new_itempath;
3113         gint oldpathlen;
3114
3115         oldpathlen = strlen(oldpath);
3116         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
3117                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
3118                 return TRUE;
3119         }
3120
3121         base = item->path + oldpathlen;
3122         while (*base == G_DIR_SEPARATOR) base++;
3123         if (*base == '\0')
3124                 new_itempath = g_strdup(newpath);
3125         else
3126                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
3127                                            NULL);
3128         g_free(item->path);
3129         item->path = new_itempath;
3130
3131         return FALSE;
3132 }