src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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_ICONV
  35 #  include <iconv.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 "prefs_account.h"
  47 #include "codeconv.h"
  48 #include "utils.h"
  49 #include "inputdialog.h"
  50 #include "log.h"
  51
  52 #define IMAP4_PORT      143
  53 #if USE_OPENSSL
  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 struct _IMAPFolderItem
  73 {
  74         FolderItem item;
  75
  76         guint lastuid;
  77         GSList *uid_list;
  78 };
  79
  80 static GList *session_list = NULL;
  81
  82 static gint imap_cmd_count = 0;
  83
  84 static void imap_folder_init            (Folder         *folder,
  85                                          const gchar    *name,
  86                                          const gchar    *path);
  87
  88 static FolderItem *imap_folder_item_new (Folder         *folder);
  89 static void imap_folder_item_destroy    (Folder         *folder,
  90                                          FolderItem     *item);
  91
  92 static IMAPSession *imap_session_get    (Folder         *folder);
  93
  94 static gint imap_scan_tree_recursive    (IMAPSession    *session,
  95                                          FolderItem     *item);
  96 static GSList *imap_parse_list          (Folder         *folder,
  97                                          IMAPSession    *session,
  98                                          const gchar    *real_path,
  99                                          gchar          *separator);
 100
 101 static void imap_create_missing_folders (Folder                 *folder);
 102 static FolderItem *imap_create_special_folder
 103                                         (Folder                 *folder,
 104                                          SpecialFolderItemType   stype,
 105                                          const gchar            *name);
 106
 107 static gint imap_do_copy                (Folder         *folder,
 108                                          FolderItem     *dest,
 109                                          MsgInfo        *msginfo,
 110                                          gboolean        remove_source);
 111 #if 0
 112 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
 113                                          FolderItem     *dest,
 114                                          GSList         *msglist,
 115                                          gboolean        remove_source);
 116 #endif
 117
 118 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
 119                                                  FolderItem     *item,
 120                                                  guint32         first_uid,
 121                                                  guint32         last_uid);
 122 static void imap_delete_all_cached_messages     (FolderItem     *item);
 123
 124 #if USE_OPENSSL
 125 static SockInfo *imap_open              (const gchar    *server,
 126                                          gushort         port,
 127                                          SSLType         ssl_type);
 128 #else
 129 static SockInfo *imap_open              (const gchar    *server,
 130                                          gushort         port);
 131 #endif
 132
 133 #if USE_OPENSSL
 134 static SockInfo *imap_open_tunnel(const gchar *server,
 135                                   const gchar *tunnelcmd,
 136                                   SSLType ssl_type);
 137 #else
 138 static SockInfo *imap_open_tunnel(const gchar *server,
 139                                   const gchar *tunnelcmd);
 140 #endif
 141
 142 #if USE_OPENSSL
 143 static SockInfo *imap_init_sock(SockInfo *sock, SSLType  ssl_type);
 144 #else
 145 static SockInfo *imap_init_sock(SockInfo *sock);
 146 #endif
 147
 148 static gint imap_set_message_flags      (IMAPSession    *session,
 149                                          guint32         first_uid,
 150                                          guint32         last_uid,
 151                                          IMAPFlags       flag,
 152                                          gboolean        is_set);
 153 static gint imap_select                 (IMAPSession    *session,
 154                                          IMAPFolder     *folder,
 155                                          const gchar    *path,
 156                                          gint           *exists,
 157                                          gint           *recent,
 158                                          gint           *unseen,
 159                                          guint32        *uid_validity);
 160 static gint imap_status                 (IMAPSession    *session,
 161                                          IMAPFolder     *folder,
 162                                          const gchar    *path,
 163                                          gint           *messages,
 164                                          gint           *recent,
 165                                          guint32        *uid_next,
 166                                          guint32        *uid_validity,
 167                                          gint           *unseen);
 168
 169 static void imap_parse_namespace                (IMAPSession    *session,
 170                                                  IMAPFolder     *folder);
 171 static void imap_get_namespace_by_list          (IMAPSession    *session,
 172                                                  IMAPFolder     *folder);
 173 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 174                                                  const gchar    *path);
 175 static gchar imap_get_path_separator            (IMAPFolder     *folder,
 176                                                  const gchar    *path);
 177 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 178                                                  const gchar    *path);
 179
 180 static gchar *imap_parse_atom           (SockInfo       *sock,
 181                                          gchar          *src,
 182                                          gchar          *dest,
 183                                          gint            dest_len,
 184                                          GString        *str);
 185 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 186 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 187                                          FolderItem     *item,
 188                                          GString        *line_str);
 189 static gint imap_greeting               (SockInfo       *sock,
 190                                          gboolean       *is_preauth);
 191 static void imap_get_capability         (Session        *session);
 192 static gboolean imap_has_capability     (IMAPSession    *session,
 193                                          const gchar    *cap);
 194
 195 /* low-level IMAP4rev1 commands */
 196 static gint imap_cmd_login      (SockInfo       *sock,
 197                                  const gchar    *user,
 198                                  const gchar    *pass);
 199 static gint imap_cmd_logout     (SockInfo       *sock);
 200 static gint imap_cmd_noop       (SockInfo       *sock);
 201 static gint imap_cmd_starttls   (SockInfo       *sock);
 202 static gint imap_cmd_namespace  (SockInfo       *sock,
 203                                  gchar         **ns_str);
 204 static gint imap_cmd_list       (SockInfo       *sock,
 205                                  const gchar    *ref,
 206                                  const gchar    *mailbox,
 207                                  GPtrArray      *argbuf);
 208 static gint imap_cmd_do_select  (SockInfo       *sock,
 209                                  const gchar    *folder,
 210                                  gboolean        examine,
 211                                  gint           *exists,
 212                                  gint           *recent,
 213                                  gint           *unseen,
 214                                  guint32        *uid_validity);
 215 static gint imap_cmd_select     (SockInfo       *sock,
 216                                  const gchar    *folder,
 217                                  gint           *exists,
 218                                  gint           *recent,
 219                                  gint           *unseen,
 220                                  guint32        *uid_validity);
 221 static gint imap_cmd_examine    (SockInfo       *sock,
 222                                  const gchar    *folder,
 223                                  gint           *exists,
 224                                  gint           *recent,
 225                                  gint           *unseen,
 226                                  guint32        *uid_validity);
 227 static gint imap_cmd_create     (SockInfo       *sock,
 228                                  const gchar    *folder);
 229 static gint imap_cmd_rename     (SockInfo       *sock,
 230                                  const gchar    *oldfolder,
 231                                  const gchar    *newfolder);
 232 static gint imap_cmd_delete     (SockInfo       *sock,
 233                                  const gchar    *folder);
 234 static gint imap_cmd_envelope   (SockInfo       *sock,
 235                                  guint32         first_uid,
 236                                  guint32         last_uid);
 237 #if 0
 238 static gint imap_cmd_search     (SockInfo       *sock,
 239                                  GSList         *numlist);
 240 #endif
 241 static gint imap_cmd_fetch      (SockInfo       *sock,
 242                                  guint32         uid,
 243                                  const gchar    *filename);
 244 static gint imap_cmd_append     (SockInfo       *sock,
 245                                  const gchar    *destfolder,
 246                                  const gchar    *file);
 247 static gint imap_cmd_copy       (IMAPSession    *session,
 248                                  gint32         msgnum,
 249                                  const gchar    *destfolder,
 250                                  gint32         *new_uid);
 251 static gint imap_cmd_store      (SockInfo       *sock,
 252                                  guint32         first_uid,
 253                                  guint32         last_uid,
 254                                  gchar          *sub_cmd);
 255 static gint imap_cmd_expunge    (SockInfo       *sock);
 256
 257 static gint imap_cmd_ok         (SockInfo       *sock,
 258                                  GPtrArray      *argbuf);
 259 static void imap_cmd_gen_send   (SockInfo       *sock,
 260                                  const gchar    *format, ...);
 261 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 262                                  gchar         **buf);
 263
 264 /* misc utility functions */
 265 static gchar *strchr_cpy                        (const gchar    *src,
 266                                                  gchar           ch,
 267                                                  gchar          *dest,
 268                                                  gint            len);
 269 static gchar *get_quoted                        (const gchar    *src,
 270                                                  gchar           ch,
 271                                                  gchar          *dest,
 272                                                  gint            len);
 273 static gchar *search_array_contain_str          (GPtrArray      *array,
 274                                                  const gchar    *str);
 275 static gchar *search_array_str                  (GPtrArray      *array,
 276                                                  const gchar    *str);
 277 static void imap_path_separator_subst           (gchar          *str,
 278                                                  gchar           separator);
 279
 280 static gchar *imap_modified_utf7_to_locale      (const gchar    *mutf7_str);
 281 static gchar *imap_locale_to_modified_utf7      (const gchar    *from);
 282
 283 static gboolean imap_rename_folder_func         (GNode          *node,
 284                                                  gpointer        data);
 285 gint imap_get_num_list                          (Folder         *folder,
 286                                                  FolderItem     *item,
 287                                                  GSList        **list);
 288 GSList *imap_get_msginfos                       (Folder         *folder,
 289                                                  FolderItem     *item,
 290                                                  GSList         *msgnum_list);
 291 MsgInfo *imap_get_msginfo                       (Folder         *folder,
 292                                                  FolderItem     *item,
 293                                                  gint            num);
 294 gboolean imap_check_msgnum_validity             (Folder         *folder,
 295                                                  FolderItem     *item);
 296
 297 Folder *imap_folder_new(const gchar *name, const gchar *path)
 298 {
 299         Folder *folder;
 300
 301         folder = (Folder *)g_new0(IMAPFolder, 1);
 302         imap_folder_init(folder, name, path);
 303
 304         return folder;
 305 }
 306
 307 void imap_folder_destroy(Folder *folder)
 308 {
 309         gchar *dir;
 310
 311         dir = folder_get_path(folder);
 312         if (is_dir_exist(dir))
 313                 remove_dir_recursive(dir);
 314         g_free(dir);
 315
 316         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 317 }
 318
 319 static void imap_folder_init(Folder *folder, const gchar *name,
 320                              const gchar *path)
 321 {
 322         folder->type = F_IMAP;
 323
 324         folder_remote_folder_init((Folder *)folder, name, path);
 325
 326 /*
 327         folder->get_msg_list        = imap_get_msg_list;
 328 */
 329         folder->item_new              = imap_folder_item_new;
 330         folder->item_destroy          = imap_folder_item_destroy;
 331         folder->fetch_msg             = imap_fetch_msg;
 332         folder->add_msg               = imap_add_msg;
 333         folder->move_msg              = imap_move_msg;
 334 /*
 335         folder->move_msgs_with_dest   = imap_move_msgs_with_dest;
 336 */
 337         folder->copy_msg              = imap_copy_msg;
 338 /*
 339         folder->copy_msgs_with_dest   = imap_copy_msgs_with_dest;
 340 */
 341         folder->remove_msg            = imap_remove_msg;
 342         folder->remove_msgs           = imap_remove_msgs;
 343         folder->remove_all_msg        = imap_remove_all_msg;
 344         folder->is_msg_changed        = imap_is_msg_changed;
 345 /*
 346         folder->scan                = imap_scan_folder;
 347 */
 348         folder->scan_tree             = imap_scan_tree;
 349         folder->create_tree           = imap_create_tree;
 350         folder->create_folder         = imap_create_folder;
 351         folder->rename_folder         = imap_rename_folder;
 352         folder->remove_folder         = imap_remove_folder;
 353         folder->destroy               = imap_folder_destroy;
 354         folder->check_msgnum_validity = imap_check_msgnum_validity;
 355
 356         folder->get_num_list          = imap_get_num_list;
 357         folder->get_msginfo           = imap_get_msginfo;
 358         folder->get_msginfos          = imap_get_msginfos;
 359 }
 360
 361 static FolderItem *imap_folder_item_new(Folder *folder)
 362 {
 363         IMAPFolderItem *item;
 364
 365         item = g_new0(IMAPFolderItem, 1);
 366         item->lastuid = 0;
 367         item->uid_list = NULL;
 368
 369         return (FolderItem *)item;
 370 }
 371
 372 static void imap_folder_item_destroy(Folder *folder, FolderItem *_item)
 373 {
 374         IMAPFolderItem *item = (IMAPFolderItem *)_item;
 375
 376         g_return_if_fail(item != NULL);
 377         g_slist_free(item->uid_list);
 378
 379         g_free(_item);
 380 }
 381
 382 static gboolean imap_reset_uid_lists_func(GNode *node, gpointer data)
 383 {
 384         IMAPFolderItem *item = (IMAPFolderItem *)node->data;
 385
 386         item->lastuid = 0;
 387         g_slist_free(item->uid_list);
 388         item->uid_list = NULL;
 389
 390         return FALSE;
 391 }
 392
 393 static void imap_reset_uid_lists(Folder *folder)
 394 {
 395         if(folder->node == NULL)
 396                 return;
 397
 398         /* Destroy all uid lists and rest last uid */
 399         g_node_traverse(folder->node, G_IN_ORDER, G_TRAVERSE_ALL, -1, imap_reset_uid_lists_func, NULL);
 400 }
 401
 402 static IMAPSession *imap_session_get(Folder *folder)
 403 {
 404         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 405         Session *session = NULL;
 406         gushort port;
 407
 408         g_return_val_if_fail(folder != NULL, NULL);
 409         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 410         g_return_val_if_fail(folder->account != NULL, NULL);
 411
 412 #if USE_OPENSSL
 413         port = folder->account->set_imapport ? folder->account->imapport
 414                 : folder->account->ssl_imap == SSL_TUNNEL
 415                 ? IMAPS_PORT : IMAP4_PORT;
 416 #else
 417         port = folder->account->set_imapport ? folder->account->imapport
 418                 : IMAP4_PORT;
 419 #endif
 420
 421         /* Make sure we have a session */
 422         if (rfolder->session != NULL) {
 423                 session = rfolder->session;
 424         } else {
 425                 imap_reset_uid_lists(folder);
 426                 session = imap_session_new(folder->account);
 427         }
 428         if(session == NULL)
 429                 return NULL;
 430
 431         /* Get CAPABILITY */
 432         imap_get_capability(session);
 433
 434         /* Make sure session is authenticated */
 435         if (!IMAP_SESSION(session)->authenticated)
 436                 imap_session_authenticate(IMAP_SESSION(session), folder->account);
 437         if (!IMAP_SESSION(session)->authenticated) {
 438                 session_destroy(session);
 439                 rfolder->session = NULL;
 440                 return NULL;
 441         }
 442
 443         /* Make sure we have parsed the IMAP namespace */
 444         imap_parse_namespace(IMAP_SESSION(session),
 445                              IMAP_FOLDER(folder));
 446
 447         /* I think the point of this code is to avoid sending a
 448          * keepalive if we've used the session recently and therefore
 449          * think it's still alive.  Unfortunately, most of the code
 450          * does not yet check for errors on the socket, and so if the
 451          * connection drops we don't notice until the timeout expires.
 452          * A better solution than sending a NOOP every time would be
 453          * for every command to be prepared to retry until it is
 454          * successfully sent. -- mbp */
 455         if (time(NULL) - session->last_access_time > SESSION_TIMEOUT) {
 456                 /* verify that the session is still alive */
 457                 if (imap_cmd_noop(session->sock) != IMAP_SUCCESS) {
 458                         /* Check if this is the first try to establish a
 459                            connection, if yes we don't try to reconnect */
 460                         if (rfolder->session == NULL) {
 461                                 log_warning(_("Connecting %s:%d failed"),
 462                                             folder->account->recv_server, port);
 463                                 session_destroy(session);
 464                                 session = NULL;
 465                         } else {
 466                                 log_warning(_("IMAP4 connection to %s:%d has been"
 467                                               " disconnected. Reconnecting...\n"),
 468                                             folder->account->recv_server, port);
 469                                 session_destroy(session);
 470                                 /* Clear folders session to make imap_session_get create
 471                                    a new session, because of rfolder->session == NULL
 472                                    it will not try to reconnect again and so avoid an
 473                                    endless loop */
 474                                 rfolder->session = NULL;
 475                                 session = SESSION(imap_session_get(folder));
 476                         }
 477                 }
 478         }
 479
 480         rfolder->session = session;
 481         if (session) {
 482                 session->last_access_time = time(NULL);
 483         }
 484         return IMAP_SESSION(session);
 485 }
 486
 487 Session *imap_session_new(const PrefsAccount *account)
 488 {
 489         IMAPSession *session;
 490         SockInfo *imap_sock;
 491         gushort port;
 492         gboolean is_preauth;
 493
 494 #ifdef USE_OPENSSL
 495         /* FIXME: IMAP over SSL only... */
 496         SSLType ssl_type;
 497
 498         port = account->set_imapport ? account->imapport
 499                 : account->ssl_imap == SSL_TUNNEL ? IMAPS_PORT : IMAP4_PORT;
 500         ssl_type = account->ssl_imap;
 501 #else
 502         port = account->set_imapport ? account->imapport
 503                 : IMAP4_PORT;
 504 #endif
 505
 506         if (account->set_tunnelcmd) {
 507                 log_message(_("creating tunneled IMAP4 connection\n"));
 508 #if USE_OPENSSL
 509                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 510                                                   account->tunnelcmd,
 511                                                   ssl_type)) == NULL)
 512 #else
 513                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 514                                                   account->tunnelcmd)) == NULL)
 515 #endif
 516                         return NULL;
 517         } else {
 518                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 519
 520                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 521                             account->recv_server, port);
 522
 523 #if USE_OPENSSL
 524                 if ((imap_sock = imap_open(account->recv_server, port,
 525                                            ssl_type)) == NULL)
 526 #else
 527                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 528 #endif
 529                         return NULL;
 530         }
 531
 532         /* Only need to log in if the connection was not PREAUTH */
 533         if (imap_greeting(imap_sock, &is_preauth) != IMAP_SUCCESS) {
 534                 sock_close(imap_sock);
 535                 return NULL;
 536         }
 537         log_message("IMAP connection is %s-authenticated\n",
 538                     (is_preauth) ? "pre" : "un");
 539
 540         session = g_new(IMAPSession, 1);
 541         SESSION(session)->type             = SESSION_IMAP;
 542         SESSION(session)->server           = g_strdup(account->recv_server);
 543         SESSION(session)->sock             = imap_sock;
 544         SESSION(session)->connected        = TRUE;
 545         SESSION(session)->phase            = SESSION_READY;
 546         SESSION(session)->last_access_time = time(NULL);
 547         SESSION(session)->data             = NULL;
 548
 549         SESSION(session)->destroy          = imap_session_destroy;
 550
 551         session->capability = NULL;
 552
 553         session->mbox = NULL;
 554         session->authenticated = is_preauth;
 555
 556         session_list = g_list_append(session_list, session);
 557
 558         return SESSION(session);
 559 }
 560
 561 void imap_session_authenticate(IMAPSession *session, const PrefsAccount *account)
 562 {
 563         gchar *pass;
 564
 565         g_return_if_fail(account->userid != NULL);
 566
 567         pass = account->passwd;
 568         if (!pass) {
 569                 gchar *tmp_pass;
 570                 tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 571                 if (!tmp_pass)
 572                         return;
 573                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return;});
 574                 g_free(tmp_pass);
 575         }
 576
 577         if (imap_cmd_login(SESSION(session)->sock, account->userid, pass) != IMAP_SUCCESS) {
 578                 imap_cmd_logout(SESSION(session)->sock);
 579                 return;
 580         }
 581
 582         session->authenticated = TRUE;
 583 }
 584
 585 void imap_session_destroy(Session *session)
 586 {
 587         sock_close(session->sock);
 588         session->sock = NULL;
 589
 590         g_free(IMAP_SESSION(session)->mbox);
 591
 592         g_strfreev(IMAP_SESSION(session)->capability);
 593
 594         session_list = g_list_remove(session_list, session);
 595 }
 596
 597 void imap_session_destroy_all(void)
 598 {
 599         while (session_list != NULL) {
 600                 IMAPSession *session = (IMAPSession *)session_list->data;
 601
 602                 imap_cmd_logout(SESSION(session)->sock);
 603                 session_destroy(SESSION(session));
 604         }
 605 }
 606
 607 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 608 {
 609         gchar *path, *filename;
 610         IMAPSession *session;
 611         gint ok;
 612
 613         g_return_val_if_fail(folder != NULL, NULL);
 614         g_return_val_if_fail(item != NULL, NULL);
 615
 616         path = folder_item_get_path(item);
 617         if (!is_dir_exist(path))
 618                 make_dir_hier(path);
 619         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 620         g_free(path);
 621
 622         if (is_file_exist(filename)) {
 623                 debug_print("message %d has been already cached.\n", uid);
 624                 return filename;
 625         }
 626
 627         session = imap_session_get(folder);
 628         if (!session) {
 629                 g_free(filename);
 630                 return NULL;
 631         }
 632
 633         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 634                          NULL, NULL, NULL, NULL);
 635         if (ok != IMAP_SUCCESS) {
 636                 g_warning("can't select mailbox %s\n", item->path);
 637                 g_free(filename);
 638                 return NULL;
 639         }
 640
 641         debug_print("getting message %d...\n", uid);
 642         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 643
 644         if (ok != IMAP_SUCCESS) {
 645                 g_warning("can't fetch message %d\n", uid);
 646                 g_free(filename);
 647                 return NULL;
 648         }
 649
 650         return filename;
 651 }
 652
 653 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 654                   gboolean remove_source)
 655 {
 656         gchar *destdir;
 657         IMAPSession *session;
 658         gint ok;
 659
 660         g_return_val_if_fail(folder != NULL, -1);
 661         g_return_val_if_fail(dest != NULL, -1);
 662         g_return_val_if_fail(file != NULL, -1);
 663
 664         session = imap_session_get(folder);
 665         if (!session) return -1;
 666
 667         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 668         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 669         g_free(destdir);
 670
 671         if (ok != IMAP_SUCCESS) {
 672                 g_warning("can't append message %s\n", file);
 673                 return -1;
 674         }
 675
 676         if (remove_source) {
 677                 if (unlink(file) < 0)
 678                         FILE_OP_ERROR(file, "unlink");
 679         }
 680
 681         return 0;
 682 }
 683
 684 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 685                          gboolean remove_source)
 686 {
 687         gchar *destdir;
 688         IMAPSession *session;
 689         IMAPFlags iflags = 0;
 690         gint messages, recent, unseen;
 691         guint32 newuid = 0, uid_validity;
 692         gint ok;
 693
 694         g_return_val_if_fail(folder != NULL, -1);
 695         g_return_val_if_fail(folder->type == F_IMAP, -1);
 696         g_return_val_if_fail(dest != NULL, -1);
 697         g_return_val_if_fail(msginfo != NULL, -1);
 698
 699         session = imap_session_get(folder);
 700         if (!session) return -1;
 701
 702         if (msginfo->folder == dest) {
 703                 g_warning("the src folder is identical to the dest.\n");
 704                 return -1;
 705         }
 706
 707         /* if we don't have UIDPLUS we get UID-NEXT and hope that the
 708            message really gets this uid */
 709         if (!imap_has_capability(session, "UIDPLUS")) {
 710                 ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
 711                                  &messages, &recent, &newuid, &uid_validity, &unseen);
 712                 if (ok != IMAP_SUCCESS) {
 713                         g_warning("can't copy message\n");
 714                         return -1;
 715                 }
 716         }
 717
 718         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 719
 720         /* ensure source folder selected */
 721         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
 722                          NULL, NULL, NULL, NULL);
 723         if (ok != IMAP_SUCCESS)
 724                 return -1;
 725
 726         if (remove_source)
 727                 debug_print("Moving message %s%c%d to %s ...\n",
 728                             msginfo->folder->path, G_DIR_SEPARATOR,
 729                             msginfo->msgnum, destdir);
 730         else
 731                 debug_print("Copying message %s%c%d to %s ...\n",
 732                             msginfo->folder->path, G_DIR_SEPARATOR,
 733                             msginfo->msgnum, destdir);
 734
 735         ok = imap_cmd_copy(session, msginfo->msgnum, destdir, &newuid);
 736
 737         if (ok == IMAP_SUCCESS && remove_source) {
 738                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 739                                        IMAP_FLAG_DELETED, TRUE);
 740                 ok = imap_cmd_expunge(SESSION(session)->sock);
 741         }
 742
 743         /* get the dest folder to set the flags */
 744         if (newuid) {
 745                 ok = imap_select(session, IMAP_FOLDER(folder), dest->path,
 746                                  NULL, NULL, NULL, NULL);
 747                 if (ok != IMAP_SUCCESS)         /* the folder disappeared? */
 748                         return -1;
 749
 750                 if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
 751                 if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
 752                 if (iflags)
 753                         if (imap_set_message_flags(session, newuid, newuid, iflags, TRUE)
 754                             != IMAP_SUCCESS)
 755                                 newuid = 0;
 756         }
 757
 758         g_free(destdir);
 759
 760         if (ok == IMAP_SUCCESS)
 761                 return newuid;
 762         else
 763                 return -1;
 764 }
 765
 766 #if 0
 767 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 768                                         GSList *msglist,
 769                                         gboolean remove_source)
 770 {
 771         gchar *destdir;
 772         GSList *cur;
 773         MsgInfo *msginfo;
 774         IMAPSession *session;
 775         gint ok = IMAP_SUCCESS;
 776
 777         g_return_val_if_fail(folder != NULL, -1);
 778         g_return_val_if_fail(dest != NULL, -1);
 779         g_return_val_if_fail(msglist != NULL, -1);
 780
 781         session = imap_session_get(folder);
 782         if (!session) return -1;
 783
 784         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 785
 786         for (cur = msglist; cur != NULL; cur = cur->next) {
 787                 msginfo = (MsgInfo *)cur->data;
 788
 789                 if (msginfo->folder == dest) {
 790                         g_warning("the src folder is identical to the dest.\n");
 791                         continue;
 792                 }
 793
 794                 /* ensure source folder selected */
 795                 ok = imap_select(session, IMAP_FOLDER(folder),
 796                                  msginfo->folder->path, NULL, NULL, NULL, NULL);
 797
 798                 if (remove_source)
 799                         debug_print("Moving message %s%c%d to %s ...\n",
 800                                     msginfo->folder->path, G_DIR_SEPARATOR,
 801                                     msginfo->msgnum, destdir);
 802                 else
 803                         debug_print("Copying message %s%c%d to %s ...\n",
 804                                     msginfo->folder->path, G_DIR_SEPARATOR,
 805                                     msginfo->msgnum, destdir);
 806
 807                 ok = imap_cmd_copy(session, msginfo, destdir);
 808
 809                 if (ok == IMAP_SUCCESS && remove_source) {
 810                         imap_set_message_flags
 811                                 (session, msginfo->msgnum, msginfo->msgnum,
 812                                  IMAP_FLAG_DELETED, TRUE);
 813                 }
 814         }
 815
 816         if (remove_source)
 817                 ok = imap_cmd_expunge(SESSION(session)->sock);
 818
 819         g_free(destdir);
 820
 821         if (ok == IMAP_SUCCESS)
 822                 return 0;
 823         else
 824                 return -1;
 825 }
 826 #endif
 827
 828 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 829 {
 830         gchar *srcfile;
 831         gint ret = 0;
 832
 833         g_return_val_if_fail(folder != NULL, -1);
 834         g_return_val_if_fail(dest != NULL, -1);
 835         g_return_val_if_fail(msginfo != NULL, -1);
 836         g_return_val_if_fail(msginfo->folder != NULL, -1);
 837
 838         if (folder == msginfo->folder->folder)
 839                 return imap_do_copy(folder, dest, msginfo, TRUE);
 840
 841         srcfile = procmsg_get_message_file(msginfo);
 842         if (!srcfile) return -1;
 843
 844         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 845         g_free(srcfile);
 846
 847         if (ret != -1) {
 848                 if(folder_item_remove_msg(msginfo->folder, msginfo->msgnum)) {
 849                         ret = -1;
 850                 }
 851         }
 852
 853         return ret;
 854 }
 855
 856 #if 0
 857 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 858                               GSList *msglist)
 859 {
 860         MsgInfo *msginfo;
 861         GSList *cur;
 862         gint ret = 0;
 863
 864         g_return_val_if_fail(folder != NULL, -1);
 865         g_return_val_if_fail(dest != NULL, -1);
 866         g_return_val_if_fail(msglist != NULL, -1);
 867
 868         msginfo = (MsgInfo *)msglist->data;
 869         if (folder == msginfo->folder->folder)
 870                 return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 871
 872         for (cur = msglist; cur != NULL; cur = cur->next) {
 873                 msginfo = (MsgInfo *)cur->data;
 874                 ret = imap_move_msg(folder, dest, msginfo);
 875                 if (ret == -1) break;
 876         }
 877
 878         return ret;
 879 }
 880 #endif
 881
 882 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 883 {
 884         gchar *srcfile;
 885         gint ret = 0;
 886
 887         g_return_val_if_fail(folder != NULL, -1);
 888         g_return_val_if_fail(dest != NULL, -1);
 889         g_return_val_if_fail(msginfo != NULL, -1);
 890         g_return_val_if_fail(msginfo->folder != NULL, -1);
 891
 892         if (folder == msginfo->folder->folder)
 893                 return imap_do_copy(folder, dest, msginfo, FALSE);
 894
 895         srcfile = procmsg_get_message_file(msginfo);
 896         if (!srcfile) return -1;
 897
 898         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 899
 900         g_free(srcfile);
 901
 902         return ret;
 903 }
 904
 905 #if 0
 906 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 907                               GSList *msglist)
 908 {
 909         MsgInfo *msginfo;
 910         GSList *cur;
 911         gint ret = 0;
 912
 913         g_return_val_if_fail(folder != NULL, -1);
 914         g_return_val_if_fail(dest != NULL, -1);
 915         g_return_val_if_fail(msglist != NULL, -1);
 916
 917         msginfo = (MsgInfo *)msglist->data;
 918         if (folder == msginfo->folder->folder)
 919                 return imap_do_copy_msgs_with_dest
 920                         (folder, dest, msglist, FALSE);
 921
 922         for (cur = msglist; cur != NULL; cur = cur->next) {
 923                 msginfo = (MsgInfo *)cur->data;
 924                 ret = imap_copy_msg(folder, dest, msginfo);
 925                 if (ret == -1) break;
 926         }
 927
 928         return ret;
 929 }
 930 #endif
 931
 932 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 933 {
 934         gint ok;
 935         IMAPSession *session;
 936         gchar *dir;
 937
 938         g_return_val_if_fail(folder != NULL, -1);
 939         g_return_val_if_fail(folder->type == F_IMAP, -1);
 940         g_return_val_if_fail(item != NULL, -1);
 941
 942         session = imap_session_get(folder);
 943         if (!session) return -1;
 944
 945         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 946                          NULL, NULL, NULL, NULL);
 947         if (ok != IMAP_SUCCESS)
 948                 return ok;
 949
 950         ok = imap_set_message_flags
 951                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 952                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 953         if (ok != IMAP_SUCCESS) {
 954                 log_warning(_("can't set deleted flags: %d\n"), uid);
 955                 return ok;
 956         }
 957
 958         ok = imap_cmd_expunge(SESSION(session)->sock);
 959         if (ok != IMAP_SUCCESS) {
 960                 log_warning(_("can't expunge\n"));
 961                 return ok;
 962         }
 963
 964         dir = folder_item_get_path(item);
 965         if (is_dir_exist(dir))
 966                 remove_numbered_files(dir, uid, uid);
 967         g_free(dir);
 968
 969         return IMAP_SUCCESS;
 970 }
 971
 972 gint imap_remove_msgs(Folder *folder, FolderItem *item, GSList *msglist)
 973 {
 974         gint ok;
 975         IMAPSession *session;
 976         gchar *dir;
 977         MsgInfo *msginfo;
 978         GSList *cur;
 979         guint32 uid;
 980
 981         g_return_val_if_fail(folder != NULL, -1);
 982         g_return_val_if_fail(folder->type == F_IMAP, -1);
 983         g_return_val_if_fail(item != NULL, -1);
 984         g_return_val_if_fail(msglist != NULL, -1);
 985
 986         session = imap_session_get(folder);
 987         if (!session) return -1;
 988
 989         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 990                          NULL, NULL, NULL, NULL);
 991         if (ok != IMAP_SUCCESS)
 992                 return ok;
 993
 994         for (cur = msglist; cur != NULL; cur = cur->next) {
 995                 msginfo = (MsgInfo *)cur->data;
 996                 uid = msginfo->msgnum;
 997                 ok = imap_set_message_flags
 998                         (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 999                          uid, uid, IMAP_FLAG_DELETED, TRUE);
1000                 if (ok != IMAP_SUCCESS) {
1001                         log_warning(_("can't set deleted flags: %d\n"), uid);
1002                         return ok;
1003                 }
1004         }
1005
1006         ok = imap_cmd_expunge(SESSION(session)->sock);
1007         if (ok != IMAP_SUCCESS) {
1008                 log_warning(_("can't expunge\n"));
1009                 return ok;
1010         }
1011
1012         dir = folder_item_get_path(item);
1013         if (is_dir_exist(dir)) {
1014                 for (cur = msglist; cur != NULL; cur = cur->next) {
1015                         msginfo = (MsgInfo *)cur->data;
1016                         uid = msginfo->msgnum;
1017                         remove_numbered_files(dir, uid, uid);
1018                 }
1019         }
1020         g_free(dir);
1021
1022         return IMAP_SUCCESS;
1023 }
1024
1025 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
1026 {
1027         gint exists, recent, unseen;
1028         guint32 uid_validity;
1029         gint ok;
1030         IMAPSession *session;
1031         gchar *dir;
1032
1033         g_return_val_if_fail(folder != NULL, -1);
1034         g_return_val_if_fail(item != NULL, -1);
1035
1036         session = imap_session_get(folder);
1037         if (!session) return -1;
1038
1039         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
1040                          &exists, &recent, &unseen, &uid_validity);
1041         if (ok != IMAP_SUCCESS)
1042                 return ok;
1043         if (exists == 0)
1044                 return IMAP_SUCCESS;
1045
1046         imap_cmd_gen_send(SESSION(session)->sock,
1047                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
1048         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
1049         if (ok != IMAP_SUCCESS) {
1050                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
1051                 return ok;
1052         }
1053
1054         ok = imap_cmd_expunge(SESSION(session)->sock);
1055         if (ok != IMAP_SUCCESS) {
1056                 log_warning(_("can't expunge\n"));
1057                 return ok;
1058         }
1059
1060         dir = folder_item_get_path(item);
1061         if (is_dir_exist(dir))
1062                 remove_all_numbered_files(dir);
1063         g_free(dir);
1064
1065         return IMAP_SUCCESS;
1066 }
1067
1068 gboolean imap_is_msg_changed(Folder *folder, FolderItem *item, MsgInfo *msginfo)
1069 {
1070         /* TODO: properly implement this method */
1071         return FALSE;
1072 }
1073
1074 gint imap_scan_folder(Folder *folder, FolderItem *item)
1075 {
1076         IMAPSession *session;
1077         gint messages, recent, unseen;
1078         guint32 uid_next, uid_validity;
1079         gint ok;
1080
1081         g_return_val_if_fail(folder != NULL, -1);
1082         g_return_val_if_fail(item != NULL, -1);
1083
1084         session = imap_session_get(folder);
1085         if (!session) return -1;
1086
1087         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
1088                          &messages, &recent, &uid_next, &uid_validity, &unseen);
1089         if (ok != IMAP_SUCCESS) return -1;
1090
1091         item->new = unseen > 0 ? recent : 0;
1092         item->unread = unseen;
1093         item->total = messages;
1094         item->last_num = (messages > 0 && uid_next > 0) ? uid_next - 1 : 0;
1095         /* item->mtime = uid_validity; */
1096
1097         return 0;
1098 }
1099
1100 void imap_scan_tree(Folder *folder)
1101 {
1102         FolderItem *item;
1103         IMAPSession *session;
1104         gchar *root_folder = NULL;
1105
1106         g_return_if_fail(folder != NULL);
1107         g_return_if_fail(folder->account != NULL);
1108
1109         session = imap_session_get(folder);
1110         if (!session) {
1111                 if (!folder->node) {
1112                         folder_tree_destroy(folder);
1113                         item = folder_item_new(folder, folder->name, NULL);
1114                         item->folder = folder;
1115                         folder->node = g_node_new(item);
1116                 }
1117                 return;
1118         }
1119
1120         if (folder->account->imap_dir && *folder->account->imap_dir) {
1121                 Xstrdup_a(root_folder, folder->account->imap_dir, return);
1122                 strtailchomp(root_folder, '/');
1123                 debug_print("IMAP root directory: %s\n", root_folder);
1124         }
1125
1126         item = folder_item_new(folder, folder->name, root_folder);
1127         item->folder = folder;
1128         item->no_select = TRUE;
1129         folder->node = g_node_new(item);
1130
1131         imap_scan_tree_recursive(session, item);
1132
1133         imap_create_missing_folders(folder);
1134 }
1135
1136 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
1137 {
1138         Folder *folder;
1139         IMAPFolder *imapfolder;
1140         FolderItem *new_item;
1141         GSList *item_list, *cur;
1142         gchar *real_path;
1143         gchar *wildcard_path;
1144         gchar separator;
1145         gchar wildcard[3];
1146
1147         g_return_val_if_fail(item != NULL, -1);
1148         g_return_val_if_fail(item->folder != NULL, -1);
1149         g_return_val_if_fail(item->no_sub == FALSE, -1);
1150
1151         folder = FOLDER(item->folder);
1152         imapfolder = IMAP_FOLDER(folder);
1153
1154         separator = imap_get_path_separator(imapfolder, item->path);
1155
1156         if (item->folder->ui_func)
1157                 item->folder->ui_func(folder, item, folder->ui_func_data);
1158
1159         if (item->path) {
1160                 wildcard[0] = separator;
1161                 wildcard[1] = '%';
1162                 wildcard[2] = '\0';
1163                 real_path = imap_get_real_path(imapfolder, item->path);
1164         } else {
1165                 wildcard[0] = '%';
1166                 wildcard[1] = '\0';
1167                 real_path = g_strdup("");
1168         }
1169
1170         Xstrcat_a(wildcard_path, real_path, wildcard,
1171                   {g_free(real_path); return IMAP_ERROR;});
1172         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
1173
1174         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
1175                           wildcard_path);
1176
1177         strtailchomp(real_path, separator);
1178         item_list = imap_parse_list(folder, session, real_path, NULL);
1179         g_free(real_path);
1180
1181         for (cur = item_list; cur != NULL; cur = cur->next) {
1182                 new_item = cur->data;
1183                 if (!strcmp(new_item->path, "INBOX")) {
1184                         if (!folder->inbox) {
1185                                 new_item->stype = F_INBOX;
1186                                 item->folder->inbox = new_item;
1187                         } else {
1188                                 folder_item_destroy(new_item);
1189                                 continue;
1190                         }
1191                 } else if (!item->parent || item->stype == F_INBOX) {
1192                         gchar *base;
1193
1194                         base = g_basename(new_item->path);
1195
1196                         if (!folder->outbox && !strcasecmp(base, "Sent")) {
1197                                 new_item->stype = F_OUTBOX;
1198                                 folder->outbox = new_item;
1199                         } else if (!folder->draft && !strcasecmp(base, "Drafts")) {
1200                                 new_item->stype = F_DRAFT;
1201                                 folder->draft = new_item;
1202                         } else if (!folder->queue && !strcasecmp(base, "Queue")) {
1203                                 new_item->stype = F_QUEUE;
1204                                 folder->queue = new_item;
1205                         } else if (!folder->trash && !strcasecmp(base, "Trash")) {
1206                                 new_item->stype = F_TRASH;
1207                                 folder->trash = new_item;
1208                         }
1209                 }
1210                 folder_item_append(item, new_item);
1211                 if (new_item->no_select == FALSE)
1212                         imap_scan_folder(folder, new_item);
1213                 if (new_item->no_sub == FALSE)
1214                         imap_scan_tree_recursive(session, new_item);
1215         }
1216
1217         return IMAP_SUCCESS;
1218 }
1219
1220 static GSList *imap_parse_list(Folder *folder, IMAPSession *session,
1221                                const gchar *real_path, gchar *separator)
1222 {
1223         gchar buf[IMAPBUFSIZE];
1224         gchar flags[256];
1225         gchar separator_str[16];
1226         gchar *p;
1227         gchar *name;
1228         gchar *loc_name, *loc_path;
1229         GSList *item_list = NULL;
1230         GString *str;
1231         FolderItem *new_item;
1232
1233         debug_print("getting list of %s ...\n",
1234                     *real_path ? real_path : "\"\"");
1235
1236         str = g_string_new(NULL);
1237
1238         for (;;) {
1239                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1240                         log_warning(_("error occured while getting LIST.\n"));
1241                         break;
1242                 }
1243                 strretchomp(buf);
1244                 if (buf[0] != '*' || buf[1] != ' ') {
1245                         log_print("IMAP4< %s\n", buf);
1246                         break;
1247                 }
1248                 debug_print("IMAP4< %s\n", buf);
1249
1250                 g_string_assign(str, buf);
1251                 p = str->str + 2;
1252                 if (strncmp(p, "LIST ", 5) != 0) continue;
1253                 p += 5;
1254
1255                 if (*p != '(') continue;
1256                 p++;
1257                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1258                 if (!p) continue;
1259                 while (*p == ' ') p++;
1260
1261                 p = strchr_cpy(p, ' ', separator_str, sizeof(separator_str));
1262                 if (!p) continue;
1263                 extract_quote(separator_str, '"');
1264                 if (!strcmp(separator_str, "NIL"))
1265                         separator_str[0] = '\0';
1266                 if (separator)
1267                         *separator = separator_str[0];
1268
1269                 buf[0] = '\0';
1270                 while (*p == ' ') p++;
1271                 if (*p == '{' || *p == '"')
1272                         p = imap_parse_atom(SESSION(session)->sock, p,
1273                                             buf, sizeof(buf), str);
1274                 else
1275                         strncpy2(buf, p, sizeof(buf));
1276                 strtailchomp(buf, separator_str[0]);
1277                 if (buf[0] == '\0') continue;
1278                 if (!strcmp(buf, real_path)) continue;
1279
1280                 if (separator_str[0] != '\0')
1281                         subst_char(buf, separator_str[0], '/');
1282                 name = g_basename(buf);
1283                 if (name[0] == '.') continue;
1284
1285                 loc_name = imap_modified_utf7_to_locale(name);
1286                 loc_path = imap_modified_utf7_to_locale(buf);
1287                 new_item = folder_item_new(folder, loc_name, loc_path);
1288                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1289                         new_item->no_sub = TRUE;
1290                 if (strcmp(buf, "INBOX") != 0 &&
1291                     strcasestr(flags, "\\Noselect") != NULL)
1292                         new_item->no_select = TRUE;
1293
1294                 item_list = g_slist_append(item_list, new_item);
1295
1296                 debug_print("folder %s has been added.\n", loc_path);
1297                 g_free(loc_path);
1298                 g_free(loc_name);
1299         }
1300
1301         g_string_free(str, TRUE);
1302
1303         return item_list;
1304 }
1305
1306 gint imap_create_tree(Folder *folder)
1307 {
1308         g_return_val_if_fail(folder != NULL, -1);
1309         g_return_val_if_fail(folder->node != NULL, -1);
1310         g_return_val_if_fail(folder->node->data != NULL, -1);
1311         g_return_val_if_fail(folder->account != NULL, -1);
1312
1313         imap_scan_tree(folder);
1314         imap_create_missing_folders(folder);
1315
1316         return 0;
1317 }
1318
1319 static void imap_create_missing_folders(Folder *folder)
1320 {
1321         g_return_if_fail(folder != NULL);
1322
1323         if (!folder->inbox)
1324                 folder->inbox = imap_create_special_folder
1325                         (folder, F_INBOX, "INBOX");
1326 #if 0
1327         if (!folder->outbox)
1328                 folder->outbox = imap_create_special_folder
1329                         (folder, F_OUTBOX, "Sent");
1330         if (!folder->draft)
1331                 folder->draft = imap_create_special_folder
1332                         (folder, F_DRAFT, "Drafts");
1333         if (!folder->queue)
1334                 folder->queue = imap_create_special_folder
1335                         (folder, F_QUEUE, "Queue");
1336 #endif
1337         if (!folder->trash)
1338                 folder->trash = imap_create_special_folder
1339                         (folder, F_TRASH, "Trash");
1340 }
1341
1342 static FolderItem *imap_create_special_folder(Folder *folder,
1343                                               SpecialFolderItemType stype,
1344                                               const gchar *name)
1345 {
1346         FolderItem *item;
1347         FolderItem *new_item;
1348
1349         g_return_val_if_fail(folder != NULL, NULL);
1350         g_return_val_if_fail(folder->node != NULL, NULL);
1351         g_return_val_if_fail(folder->node->data != NULL, NULL);
1352         g_return_val_if_fail(folder->account != NULL, NULL);
1353         g_return_val_if_fail(name != NULL, NULL);
1354
1355         item = FOLDER_ITEM(folder->node->data);
1356         new_item = imap_create_folder(folder, item, name);
1357
1358         if (!new_item) {
1359                 g_warning("Can't create '%s'\n", name);
1360                 if (!folder->inbox) return NULL;
1361
1362                 new_item = imap_create_folder(folder, folder->inbox, name);
1363                 if (!new_item)
1364                         g_warning("Can't create '%s' under INBOX\n", name);
1365                 else
1366                         new_item->stype = stype;
1367         } else
1368                 new_item->stype = stype;
1369
1370         return new_item;
1371 }
1372
1373 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1374                                const gchar *name)
1375 {
1376         gchar *dirpath, *imap_path;
1377         IMAPSession *session;
1378         FolderItem *new_item;
1379         gchar separator;
1380         gchar *new_name;
1381         const gchar *p;
1382         gint ok;
1383
1384         g_return_val_if_fail(folder != NULL, NULL);
1385         g_return_val_if_fail(folder->account != NULL, NULL);
1386         g_return_val_if_fail(parent != NULL, NULL);
1387         g_return_val_if_fail(name != NULL, NULL);
1388
1389         session = imap_session_get(folder);
1390         if (!session) return NULL;
1391
1392         if (!parent->parent && strcmp(name, "INBOX") == 0)
1393                 dirpath = g_strdup(name);
1394         else if (parent->path)
1395                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1396         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1397                 dirpath = g_strdup(name);
1398         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1399                 gchar *imap_dir;
1400
1401                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1402                 strtailchomp(imap_dir, '/');
1403                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1404         } else
1405                 dirpath = g_strdup(name);
1406
1407         /* keep trailing directory separator to create a folder that contains
1408            sub folder */
1409         imap_path = imap_locale_to_modified_utf7(dirpath);
1410         strtailchomp(dirpath, '/');
1411         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1412         strtailchomp(new_name, '/');
1413         separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
1414         imap_path_separator_subst(imap_path, separator);
1415         subst_char(new_name, '/', separator);
1416
1417         if (strcmp(name, "INBOX") != 0) {
1418                 GPtrArray *argbuf;
1419                 gint i;
1420                 gboolean exist = FALSE;
1421
1422                 argbuf = g_ptr_array_new();
1423                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
1424                                    argbuf);
1425                 if (ok != IMAP_SUCCESS) {
1426                         log_warning(_("can't create mailbox: LIST failed\n"));
1427                         g_free(imap_path);
1428                         g_free(dirpath);
1429                         ptr_array_free_strings(argbuf);
1430                         g_ptr_array_free(argbuf, TRUE);
1431                         return NULL;
1432                 }
1433
1434                 for (i = 0; i < argbuf->len; i++) {
1435                         gchar *str;
1436                         str = g_ptr_array_index(argbuf, i);
1437                         if (!strncmp(str, "LIST ", 5)) {
1438                                 exist = TRUE;
1439                                 break;
1440                         }
1441                 }
1442                 ptr_array_free_strings(argbuf);
1443                 g_ptr_array_free(argbuf, TRUE);
1444
1445                 if (!exist) {
1446                         ok = imap_cmd_create(SESSION(session)->sock, imap_path);
1447                         if (ok != IMAP_SUCCESS) {
1448                                 log_warning(_("can't create mailbox\n"));
1449                                 g_free(imap_path);
1450                                 g_free(dirpath);
1451                                 return NULL;
1452                         }
1453                 }
1454         }
1455
1456         new_item = folder_item_new(folder, new_name, dirpath);
1457         folder_item_append(parent, new_item);
1458         g_free(imap_path);
1459         g_free(dirpath);
1460
1461         dirpath = folder_item_get_path(new_item);
1462         if (!is_dir_exist(dirpath))
1463                 make_dir_hier(dirpath);
1464         g_free(dirpath);
1465
1466         return new_item;
1467 }
1468
1469 gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
1470 {
1471         gchar *dirpath;
1472         gchar *newpath;
1473         gchar *real_oldpath;
1474         gchar *real_newpath;
1475         GNode *node;
1476         gchar *paths[2];
1477         gchar *old_cache_dir;
1478         gchar *new_cache_dir;
1479         IMAPSession *session;
1480         gchar separator;
1481         gint ok;
1482         gint exists, recent, unseen;
1483         guint32 uid_validity;
1484
1485         g_return_val_if_fail(folder != NULL, -1);
1486         g_return_val_if_fail(item != NULL, -1);
1487         g_return_val_if_fail(item->path != NULL, -1);
1488         g_return_val_if_fail(name != NULL, -1);
1489
1490         session = imap_session_get(folder);
1491         if (!session) return -1;
1492
1493         real_oldpath = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1494
1495         g_free(session->mbox);
1496         session->mbox = NULL;
1497         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1498                               &exists, &recent, &unseen, &uid_validity);
1499         if (ok != IMAP_SUCCESS) {
1500                 g_free(real_oldpath);
1501                 return -1;
1502         }
1503
1504         separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
1505         if (strchr(item->path, G_DIR_SEPARATOR)) {
1506                 dirpath = g_dirname(item->path);
1507                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
1508                 g_free(dirpath);
1509         } else
1510                 newpath = g_strdup(name);
1511
1512         real_newpath = imap_locale_to_modified_utf7(newpath);
1513         imap_path_separator_subst(real_newpath, separator);
1514
1515         ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
1516         if (ok != IMAP_SUCCESS) {
1517                 log_warning(_("can't rename mailbox: %s to %s\n"),
1518                             real_oldpath, real_newpath);
1519                 g_free(real_oldpath);
1520                 g_free(newpath);
1521                 g_free(real_newpath);
1522                 return -1;
1523         }
1524
1525         g_free(item->name);
1526         item->name = g_strdup(name);
1527
1528         old_cache_dir = folder_item_get_path(item);
1529
1530         node = g_node_find(item->folder->node, G_PRE_ORDER, G_TRAVERSE_ALL,
1531                            item);
1532         paths[0] = g_strdup(item->path);
1533         paths[1] = newpath;
1534         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1535                         imap_rename_folder_func, paths);
1536
1537         if (is_dir_exist(old_cache_dir)) {
1538                 new_cache_dir = folder_item_get_path(item);
1539                 if (rename(old_cache_dir, new_cache_dir) < 0) {
1540                         FILE_OP_ERROR(old_cache_dir, "rename");
1541                 }
1542                 g_free(new_cache_dir);
1543         }
1544
1545         g_free(old_cache_dir);
1546         g_free(paths[0]);
1547         g_free(newpath);
1548         g_free(real_oldpath);
1549         g_free(real_newpath);
1550
1551         return 0;
1552 }
1553
1554 gint imap_remove_folder(Folder *folder, FolderItem *item)
1555 {
1556         gint ok;
1557         IMAPSession *session;
1558         gchar *path;
1559         gchar *cache_dir;
1560         gint exists, recent, unseen;
1561         guint32 uid_validity;
1562
1563         g_return_val_if_fail(folder != NULL, -1);
1564         g_return_val_if_fail(item != NULL, -1);
1565         g_return_val_if_fail(item->path != NULL, -1);
1566
1567         session = imap_session_get(folder);
1568         if (!session) return -1;
1569
1570         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1571
1572         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1573                               &exists, &recent, &unseen, &uid_validity);
1574         if (ok != IMAP_SUCCESS) {
1575                 g_free(path);
1576                 return -1;
1577         }
1578
1579         ok = imap_cmd_delete(SESSION(session)->sock, path);
1580         if (ok != IMAP_SUCCESS) {
1581                 log_warning(_("can't delete mailbox\n"));
1582                 g_free(path);
1583                 return -1;
1584         }
1585
1586         g_free(path);
1587         cache_dir = folder_item_get_path(item);
1588         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
1589                 g_warning("can't remove directory '%s'\n", cache_dir);
1590         g_free(cache_dir);
1591         folder_item_remove(item);
1592
1593         return 0;
1594 }
1595
1596 static GSList *imap_get_uncached_messages(IMAPSession *session,
1597                                           FolderItem *item,
1598                                           guint32 first_uid, guint32 last_uid)
1599 {
1600         gchar *tmp;
1601         GSList *newlist = NULL;
1602         GSList *llast = NULL;
1603         GString *str;
1604         MsgInfo *msginfo;
1605
1606         g_return_val_if_fail(session != NULL, NULL);
1607         g_return_val_if_fail(item != NULL, NULL);
1608         g_return_val_if_fail(item->folder != NULL, NULL);
1609         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1610         g_return_val_if_fail(first_uid <= last_uid, NULL);
1611
1612         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1613             != IMAP_SUCCESS) {
1614                 log_warning(_("can't get envelope\n"));
1615                 return NULL;
1616         }
1617
1618         str = g_string_new(NULL);
1619
1620         for (;;) {
1621                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1622                         log_warning(_("error occurred while getting envelope.\n"));
1623                         g_string_free(str, TRUE);
1624                         return newlist;
1625                 }
1626                 strretchomp(tmp);
1627                 if (tmp[0] != '*' || tmp[1] != ' ') {
1628                         log_print("IMAP4< %s\n", tmp);
1629                         g_free(tmp);
1630                         break;
1631                 }
1632                 if (strstr(tmp, "FETCH") == NULL) {
1633                         log_print("IMAP4< %s\n", tmp);
1634                         g_free(tmp);
1635                         continue;
1636                 }
1637                 log_print("IMAP4< %s\n", tmp);
1638                 g_string_assign(str, tmp);
1639                 g_free(tmp);
1640
1641                 msginfo = imap_parse_envelope
1642                         (SESSION(session)->sock, item, str);
1643                 if (!msginfo) {
1644                         log_warning(_("can't parse envelope: %s\n"), str->str);
1645                         continue;
1646                 }
1647                 if (item->stype == F_QUEUE) {
1648                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_QUEUED);
1649                 } else if (item->stype == F_DRAFT) {
1650                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_DRAFT);
1651                 }
1652
1653                 msginfo->folder = item;
1654
1655                 if (!newlist)
1656                         llast = newlist = g_slist_append(newlist, msginfo);
1657                 else {
1658                         llast = g_slist_append(llast, msginfo);
1659                         llast = llast->next;
1660                 }
1661         }
1662
1663         g_string_free(str, TRUE);
1664
1665         return newlist;
1666 }
1667
1668 static void imap_delete_all_cached_messages(FolderItem *item)
1669 {
1670         gchar *dir;
1671
1672         g_return_if_fail(item != NULL);
1673         g_return_if_fail(item->folder != NULL);
1674         g_return_if_fail(item->folder->type == F_IMAP);
1675
1676         debug_print("Deleting all cached messages...\n");
1677
1678         dir = folder_item_get_path(item);
1679         if (is_dir_exist(dir))
1680                 remove_all_numbered_files(dir);
1681         g_free(dir);
1682
1683         debug_print("done.\n");
1684 }
1685
1686 #if USE_OPENSSL
1687 static SockInfo *imap_open_tunnel(const gchar *server,
1688                            const gchar *tunnelcmd,
1689                            SSLType ssl_type)
1690 #else
1691 static SockInfo *imap_open_tunnel(const gchar *server,
1692                            const gchar *tunnelcmd)
1693 #endif
1694 {
1695         SockInfo *sock;
1696
1697         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1698                 log_warning(_("Can't establish IMAP4 session with: %s\n"),
1699                             server);
1700                 return NULL;
1701 #if USE_OPENSSL
1702         return imap_init_sock(sock, ssl_type);
1703 #else
1704         return imap_init_sock(sock);
1705 #endif
1706 }
1707
1708
1709 #if USE_OPENSSL
1710 static SockInfo *imap_open(const gchar *server, gushort port,
1711                            SSLType ssl_type)
1712 #else
1713 static SockInfo *imap_open(const gchar *server, gushort port)
1714 #endif
1715 {
1716         SockInfo *sock;
1717
1718         if ((sock = sock_connect(server, port)) == NULL) {
1719                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1720                             server, port);
1721                 return NULL;
1722         }
1723
1724 #if USE_OPENSSL
1725         if (ssl_type == SSL_TUNNEL && !ssl_init_socket(sock)) {
1726                 log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
1727                             server, port);
1728                 sock_close(sock);
1729                 return NULL;
1730         }
1731         return imap_init_sock(sock, ssl_type);
1732 #else
1733         return imap_init_sock(sock);
1734 #endif
1735 }
1736
1737 #if USE_OPENSSL
1738 static SockInfo *imap_init_sock(SockInfo *sock, SSLType ssl_type)
1739 #else
1740 static SockInfo *imap_init_sock(SockInfo *sock)
1741 #endif
1742 {
1743         imap_cmd_count = 0;
1744 #if USE_OPENSSL
1745         if (ssl_type == SSL_STARTTLS) {
1746                 gint ok;
1747
1748                 ok = imap_cmd_starttls(sock);
1749                 if (ok != IMAP_SUCCESS) {
1750                         log_warning(_("Can't start TLS session.\n"));
1751                         sock_close(sock);
1752                         return NULL;
1753                 }
1754                 if (!ssl_init_socket_with_method(sock, SSL_METHOD_TLSv1)) {
1755                         sock_close(sock);
1756                         return NULL;
1757                 }
1758         }
1759 #endif
1760
1761         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1762                 log_warning(_("Can't establish IMAP4 session.\n"));
1763                 sock_close(sock);
1764                 return NULL;
1765         }
1766
1767         return sock;
1768 }
1769
1770 static GList *imap_parse_namespace_str(gchar *str)
1771 {
1772         gchar *p = str;
1773         gchar *name;
1774         gchar *separator;
1775         IMAPNameSpace *namespace;
1776         GList *ns_list = NULL;
1777
1778         while (*p != '\0') {
1779                 /* parse ("#foo" "/") */
1780
1781                 while (*p && *p != '(') p++;
1782                 if (*p == '\0') break;
1783                 p++;
1784
1785                 while (*p && *p != '"') p++;
1786                 if (*p == '\0') break;
1787                 p++;
1788                 name = p;
1789
1790                 while (*p && *p != '"') p++;
1791                 if (*p == '\0') break;
1792                 *p = '\0';
1793                 p++;
1794
1795                 while (*p && isspace(*p)) p++;
1796                 if (*p == '\0') break;
1797                 if (strncmp(p, "NIL", 3) == 0)
1798                         separator = NULL;
1799                 else if (*p == '"') {
1800                         p++;
1801                         separator = p;
1802                         while (*p && *p != '"') p++;
1803                         if (*p == '\0') break;
1804                         *p = '\0';
1805                         p++;
1806                 } else break;
1807
1808                 while (*p && *p != ')') p++;
1809                 if (*p == '\0') break;
1810                 p++;
1811
1812                 namespace = g_new(IMAPNameSpace, 1);
1813                 namespace->name = g_strdup(name);
1814                 namespace->separator = separator ? separator[0] : '\0';
1815                 ns_list = g_list_append(ns_list, namespace);
1816         }
1817
1818         return ns_list;
1819 }
1820
1821 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1822 {
1823         gchar *ns_str;
1824         gchar **str_array;
1825
1826         g_return_if_fail(session != NULL);
1827         g_return_if_fail(folder != NULL);
1828
1829         if (folder->ns_personal != NULL ||
1830             folder->ns_others   != NULL ||
1831             folder->ns_shared   != NULL)
1832                 return;
1833
1834         if (!imap_has_capability(session, "NAMESPACE")) {
1835                 imap_get_namespace_by_list(session, folder);
1836                 return;
1837         }
1838
1839         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1840             != IMAP_SUCCESS) {
1841                 log_warning(_("can't get namespace\n"));
1842                 return;
1843         }
1844
1845         str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
1846         if (str_array == NULL) {
1847                 g_free(ns_str);
1848                 imap_get_namespace_by_list(session, folder);
1849                 return;
1850         }
1851         if (str_array[0])
1852                 folder->ns_personal = imap_parse_namespace_str(str_array[0]);
1853         if (str_array[0] && str_array[1])
1854                 folder->ns_others = imap_parse_namespace_str(str_array[1]);
1855         if (str_array[0] && str_array[1] && str_array[2])
1856                 folder->ns_shared = imap_parse_namespace_str(str_array[2]);
1857         g_strfreev(str_array);
1858         g_free(ns_str);
1859 }
1860
1861 static void imap_get_namespace_by_list(IMAPSession *session, IMAPFolder *folder)
1862 {
1863         GSList *item_list, *cur;
1864         gchar separator = '\0';
1865         IMAPNameSpace *namespace;
1866
1867         g_return_if_fail(session != NULL);
1868         g_return_if_fail(folder != NULL);
1869
1870         if (folder->ns_personal != NULL ||
1871             folder->ns_others   != NULL ||
1872             folder->ns_shared   != NULL)
1873                 return;
1874
1875         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" \"\"");
1876         item_list = imap_parse_list(NULL, session, "", &separator);
1877         for (cur = item_list; cur != NULL; cur = cur->next)
1878                 folder_item_destroy(FOLDER_ITEM(cur->data));
1879         g_slist_free(item_list);
1880
1881         namespace = g_new(IMAPNameSpace, 1);
1882         namespace->name = g_strdup("");
1883         namespace->separator = separator;
1884         folder->ns_personal = g_list_append(NULL, namespace);
1885 }
1886
1887 static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
1888                                                     const gchar *path)
1889 {
1890         IMAPNameSpace *namespace = NULL;
1891         gchar *tmp_path, *name;
1892
1893         if (!path) path = "";
1894
1895         Xstrcat_a(tmp_path, path, "/", return NULL);
1896
1897         for (; ns_list != NULL; ns_list = ns_list->next) {
1898                 IMAPNameSpace *tmp_ns = ns_list->data;
1899
1900                 Xstrdup_a(name, tmp_ns->name, return namespace);
1901                 if (tmp_ns->separator && tmp_ns->separator != '/')
1902                         subst_char(name, tmp_ns->separator, '/');
1903                 if (strncmp(tmp_path, name, strlen(name)) == 0)
1904                         namespace = tmp_ns;
1905         }
1906
1907         return namespace;
1908 }
1909
1910 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1911                                           const gchar *path)
1912 {
1913         IMAPNameSpace *namespace;
1914
1915         g_return_val_if_fail(folder != NULL, NULL);
1916
1917         namespace = imap_find_namespace_from_list(folder->ns_personal, path);
1918         if (namespace) return namespace;
1919         namespace = imap_find_namespace_from_list(folder->ns_others, path);
1920         if (namespace) return namespace;
1921         namespace = imap_find_namespace_from_list(folder->ns_shared, path);
1922         if (namespace) return namespace;
1923
1924         return NULL;
1925 }
1926
1927 static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
1928 {
1929         IMAPNameSpace *namespace;
1930         gchar separator = '/';
1931
1932         namespace = imap_find_namespace(folder, path);
1933         if (namespace && namespace->separator)
1934                 separator = namespace->separator;
1935
1936         return separator;
1937 }
1938
1939 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1940 {
1941         gchar *real_path;
1942         gchar separator;
1943
1944         g_return_val_if_fail(folder != NULL, NULL);
1945         g_return_val_if_fail(path != NULL, NULL);
1946
1947         real_path = imap_locale_to_modified_utf7(path);
1948         separator = imap_get_path_separator(folder, path);
1949         imap_path_separator_subst(real_path, separator);
1950
1951         return real_path;
1952 }
1953
1954 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1955                               gchar *dest, gint dest_len, GString *str)
1956 {
1957         gchar *cur_pos = src;
1958         gchar *nextline;
1959
1960         g_return_val_if_fail(str != NULL, cur_pos);
1961
1962         /* read the next line if the current response buffer is empty */
1963         while (isspace(*cur_pos)) cur_pos++;
1964         while (*cur_pos == '\0') {
1965                 if ((nextline = sock_getline(sock)) == NULL)
1966                         return cur_pos;
1967                 g_string_assign(str, nextline);
1968                 cur_pos = str->str;
1969                 strretchomp(nextline);
1970                 /* log_print("IMAP4< %s\n", nextline); */
1971                 debug_print("IMAP4< %s\n", nextline);
1972                 g_free(nextline);
1973
1974                 while (isspace(*cur_pos)) cur_pos++;
1975         }
1976
1977         if (!strncmp(cur_pos, "NIL", 3)) {
1978                 *dest = '\0';
1979                 cur_pos += 3;
1980         } else if (*cur_pos == '\"') {
1981                 gchar *p;
1982
1983                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1984                 cur_pos = p ? p : cur_pos + 2;
1985         } else if (*cur_pos == '{') {
1986                 gchar buf[32];
1987                 gint len;
1988                 gint line_len = 0;
1989
1990                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1991                 len = atoi(buf);
1992
1993                 g_string_truncate(str, 0);
1994                 cur_pos = str->str;
1995
1996                 do {
1997                         if ((nextline = sock_getline(sock)) == NULL)
1998                                 return cur_pos;
1999                         line_len += strlen(nextline);
2000                         g_string_append(str, nextline);
2001                         cur_pos = str->str;
2002                         strretchomp(nextline);
2003                         /* log_print("IMAP4< %s\n", nextline); */
2004                         debug_print("IMAP4< %s\n", nextline);
2005                         g_free(nextline);
2006                 } while (line_len < len);
2007
2008                 memcpy(dest, cur_pos, MIN(len, dest_len - 1));
2009                 dest[MIN(len, dest_len - 1)] = '\0';
2010                 cur_pos += len;
2011         }
2012
2013         return cur_pos;
2014 }
2015
2016 static gchar *imap_get_header(SockInfo *sock, gchar *cur_pos, gchar **headers,
2017                               GString *str)
2018 {
2019         gchar *nextline;
2020         gchar buf[32];
2021         gint len;
2022         gint block_len = 0;
2023
2024         *headers = NULL;
2025
2026         g_return_val_if_fail(str != NULL, cur_pos);
2027
2028         while (isspace(*cur_pos)) cur_pos++;
2029
2030         g_return_val_if_fail(*cur_pos == '{', cur_pos);
2031
2032         cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
2033         len = atoi(buf);
2034
2035         g_string_truncate(str, 0);
2036         cur_pos = str->str;
2037
2038         do {
2039                 if ((nextline = sock_getline(sock)) == NULL)
2040                         return cur_pos;
2041                 block_len += strlen(nextline);
2042                 g_string_append(str, nextline);
2043                 cur_pos = str->str;
2044                 strretchomp(nextline);
2045                 /* debug_print("IMAP4< %s\n", nextline); */
2046                 g_free(nextline);
2047         } while (block_len < len);
2048
2049         debug_print("IMAP4< [contents of BODY.PEEK[HEADER.FIELDS (...)]]\n");
2050
2051         *headers = g_strndup(cur_pos, len);
2052         cur_pos += len;
2053
2054         while (isspace(*cur_pos)) cur_pos++;
2055         while (*cur_pos == '\0') {
2056                 if ((nextline = sock_getline(sock)) == NULL)
2057                         return cur_pos;
2058                 g_string_assign(str, nextline);
2059                 cur_pos = str->str;
2060                 strretchomp(nextline);
2061                 debug_print("IMAP4< %s\n", nextline);
2062                 g_free(nextline);
2063
2064                 while (isspace(*cur_pos)) cur_pos++;
2065         }
2066
2067         return cur_pos;
2068 }
2069
2070 static MsgFlags imap_parse_flags(const gchar *flag_str)
2071 {
2072         const gchar *p = flag_str;
2073         MsgFlags flags = {0, 0};
2074
2075         flags.perm_flags = MSG_UNREAD;
2076
2077         while ((p = strchr(p, '\\')) != NULL) {
2078                 p++;
2079
2080                 if (g_strncasecmp(p, "Recent", 6) == 0 && MSG_IS_UNREAD(flags)) {
2081                         MSG_SET_PERM_FLAGS(flags, MSG_NEW);
2082                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
2083                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
2084                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
2085                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
2086                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
2087                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
2088                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
2089                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
2090                 }
2091         }
2092
2093         return flags;
2094 }
2095
2096 static MsgInfo *imap_parse_envelope(SockInfo *sock, FolderItem *item,
2097                                     GString *line_str)
2098 {
2099         gchar buf[IMAPBUFSIZE];
2100         MsgInfo *msginfo = NULL;
2101         gchar *cur_pos;
2102         gint msgnum;
2103         guint32 uid = 0;
2104         size_t size = 0;
2105         MsgFlags flags = {0, 0}, imap_flags = {0, 0};
2106
2107         g_return_val_if_fail(line_str != NULL, NULL);
2108         g_return_val_if_fail(line_str->str[0] == '*' &&
2109                              line_str->str[1] == ' ', NULL);
2110
2111         MSG_SET_TMP_FLAGS(flags, MSG_IMAP);
2112         if (item->stype == F_QUEUE) {
2113                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
2114         } else if (item->stype == F_DRAFT) {
2115                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
2116         }
2117
2118         cur_pos = line_str->str + 2;
2119
2120 #define PARSE_ONE_ELEMENT(ch)                                   \
2121 {                                                               \
2122         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf));    \
2123         if (cur_pos == NULL) {                                  \
2124                 g_warning("cur_pos == NULL\n");                 \
2125                 procmsg_msginfo_free(msginfo);                  \
2126                 return NULL;                                    \
2127         }                                                       \
2128 }
2129
2130         PARSE_ONE_ELEMENT(' ');
2131         msgnum = atoi(buf);
2132
2133         PARSE_ONE_ELEMENT(' ');
2134         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
2135
2136         g_return_val_if_fail(*cur_pos == '(', NULL);
2137         cur_pos++;
2138
2139         while (*cur_pos != '\0' && *cur_pos != ')') {
2140                 while (*cur_pos == ' ') cur_pos++;
2141
2142                 if (!strncmp(cur_pos, "UID ", 4)) {
2143                         cur_pos += 4;
2144                         uid = strtoul(cur_pos, &cur_pos, 10);
2145                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
2146                         cur_pos += 6;
2147                         if (*cur_pos != '(') {
2148                                 g_warning("*cur_pos != '('\n");
2149                                 procmsg_msginfo_free(msginfo);
2150                                 return NULL;
2151                         }
2152                         cur_pos++;
2153                         PARSE_ONE_ELEMENT(')');
2154                         imap_flags = imap_parse_flags(buf);
2155                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
2156                         cur_pos += 12;
2157                         size = strtol(cur_pos, &cur_pos, 10);
2158                 } else if (!strncmp(cur_pos, "BODY[HEADER.FIELDS ", 19)) {
2159                         gchar *headers;
2160
2161                         cur_pos += 19;
2162                         if (*cur_pos != '(') {
2163                                 g_warning("*cur_pos != '('\n");
2164                                 procmsg_msginfo_free(msginfo);
2165                                 return NULL;
2166                         }
2167                         cur_pos++;
2168                         PARSE_ONE_ELEMENT(')');
2169                         if (*cur_pos != ']') {
2170                                 g_warning("*cur_pos != ']'\n");
2171                                 procmsg_msginfo_free(msginfo);
2172                                 return NULL;
2173                         }
2174                         cur_pos++;
2175
2176                         cur_pos = imap_get_header(sock, cur_pos, &headers,
2177                                                   line_str);
2178                         msginfo = procheader_parse_str(headers, flags, FALSE, FALSE);
2179                         g_free(headers);
2180                 } else {
2181                         g_warning("invalid FETCH response: %s\n", cur_pos);
2182                         break;
2183                 }
2184         }
2185
2186         if (msginfo) {
2187                 msginfo->msgnum = uid;
2188                 msginfo->size = size;
2189                 msginfo->flags.tmp_flags |= imap_flags.tmp_flags;
2190                 msginfo->flags.perm_flags = imap_flags.perm_flags;
2191         }
2192
2193         return msginfo;
2194 }
2195
2196 gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2197 {
2198         Folder *folder;
2199         IMAPSession *session;
2200         IMAPFlags iflags = 0;
2201         gint ok = IMAP_SUCCESS;
2202
2203         g_return_val_if_fail(msginfo != NULL, -1);
2204         g_return_val_if_fail(msginfo->folder != NULL, -1);
2205         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2206
2207         folder = msginfo->folder->folder;
2208         g_return_val_if_fail(folder->type == F_IMAP, -1);
2209
2210         session = imap_session_get(folder);
2211         if (!session) return -1;
2212
2213         if ((ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
2214             NULL, NULL, NULL, NULL)) != IMAP_SUCCESS)
2215                 return ok;
2216
2217         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2218         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2219         if (iflags) {
2220                 ok = imap_set_message_flags(session, msginfo->msgnum,
2221                                             msginfo->msgnum, iflags, TRUE);
2222                 if (ok != IMAP_SUCCESS) return ok;
2223         }
2224
2225         if (flags & MSG_UNREAD)
2226                 ok = imap_set_message_flags(session, msginfo->msgnum,
2227                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2228                                             FALSE);
2229         return ok;
2230 }
2231
2232 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2233 {
2234         Folder *folder;
2235         IMAPSession *session;
2236         IMAPFlags iflags = 0;
2237         gint ok = IMAP_SUCCESS;
2238
2239         g_return_val_if_fail(msginfo != NULL, -1);
2240         g_return_val_if_fail(msginfo->folder != NULL, -1);
2241         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2242
2243         folder = msginfo->folder->folder;
2244         g_return_val_if_fail(folder->type == F_IMAP, -1);
2245
2246         session = imap_session_get(folder);
2247         if (!session) return -1;
2248
2249         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2250         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2251         if (iflags) {
2252                 ok = imap_set_message_flags(session, msginfo->msgnum,
2253                                             msginfo->msgnum, iflags, FALSE);
2254                 if (ok != IMAP_SUCCESS) return ok;
2255         }
2256
2257         if (flags & MSG_UNREAD)
2258                 ok = imap_set_message_flags(session, msginfo->msgnum,
2259                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2260                                             TRUE);
2261         return ok;
2262 }
2263
2264 static gint imap_set_message_flags(IMAPSession *session,
2265                                    guint32 first_uid,
2266                                    guint32 last_uid,
2267                                    IMAPFlags flags,
2268                                    gboolean is_set)
2269 {
2270         GString *buf;
2271         gint ok;
2272
2273         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
2274
2275         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
2276         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
2277         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
2278         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
2279         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
2280
2281         if (buf->str[buf->len - 1] == ' ')
2282                 g_string_truncate(buf, buf->len - 1);
2283
2284         g_string_append_c(buf, ')');
2285
2286         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
2287                             buf->str);
2288         g_string_free(buf, TRUE);
2289
2290         return ok;
2291 }
2292
2293 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
2294                         const gchar *path,
2295                         gint *exists, gint *recent, gint *unseen,
2296                         guint32 *uid_validity)
2297 {
2298         gchar *real_path;
2299         gint ok;
2300         gint exists_, recent_, unseen_, uid_validity_;
2301
2302         if (!exists || !recent || !unseen || !uid_validity) {
2303                 if (session->mbox && strcmp(session->mbox, path) == 0)
2304                         return IMAP_SUCCESS;
2305                 exists = &exists_;
2306                 recent = &recent_;
2307                 unseen = &unseen_;
2308                 uid_validity = &uid_validity_;
2309         }
2310
2311         g_free(session->mbox);
2312         session->mbox = NULL;
2313
2314         real_path = imap_get_real_path(folder, path);
2315         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2316                              exists, recent, unseen, uid_validity);
2317         if (ok != IMAP_SUCCESS)
2318                 log_warning(_("can't select folder: %s\n"), real_path);
2319         else
2320                 session->mbox = g_strdup(path);
2321         g_free(real_path);
2322
2323         return ok;
2324 }
2325
2326 #define THROW(err) { ok = err; goto catch; }
2327
2328 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2329                         const gchar *path,
2330                         gint *messages, gint *recent,
2331                         guint32 *uid_next, guint32 *uid_validity,
2332                         gint *unseen)
2333 {
2334         gchar *real_path;
2335         gchar *real_path_;
2336         gint ok;
2337         GPtrArray *argbuf;
2338         gchar *str;
2339
2340         *messages = *recent = *uid_next = *uid_validity = *unseen = 0;
2341
2342         argbuf = g_ptr_array_new();
2343
2344         real_path = imap_get_real_path(folder, path);
2345         QUOTE_IF_REQUIRED(real_path_, real_path);
2346         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2347                           "(MESSAGES RECENT UIDNEXT UIDVALIDITY UNSEEN)",
2348                           real_path_);
2349
2350         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2351         if (ok != IMAP_SUCCESS) THROW(ok);
2352
2353         str = search_array_str(argbuf, "STATUS");
2354         if (!str) THROW(IMAP_ERROR);
2355
2356         str = strchr(str, '(');
2357         if (!str) THROW(IMAP_ERROR);
2358         str++;
2359         while (*str != '\0' && *str != ')') {
2360                 while (*str == ' ') str++;
2361
2362                 if (!strncmp(str, "MESSAGES ", 9)) {
2363                         str += 9;
2364                         *messages = strtol(str, &str, 10);
2365                 } else if (!strncmp(str, "RECENT ", 7)) {
2366                         str += 7;
2367                         *recent = strtol(str, &str, 10);
2368                 } else if (!strncmp(str, "UIDNEXT ", 8)) {
2369                         str += 8;
2370                         *uid_next = strtoul(str, &str, 10);
2371                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2372                         str += 12;
2373                         *uid_validity = strtoul(str, &str, 10);
2374                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2375                         str += 7;
2376                         *unseen = strtol(str, &str, 10);
2377                 } else {
2378                         g_warning("invalid STATUS response: %s\n", str);
2379                         break;
2380                 }
2381         }
2382
2383 catch:
2384         g_free(real_path);
2385         ptr_array_free_strings(argbuf);
2386         g_ptr_array_free(argbuf, TRUE);
2387
2388         return ok;
2389 }
2390
2391 #undef THROW
2392
2393
2394 /* low-level IMAP4rev1 commands */
2395
2396 static gint imap_cmd_login(SockInfo *sock,
2397                            const gchar *user, const gchar *pass)
2398 {
2399         gchar *user_, *pass_;
2400         gint ok;
2401
2402         QUOTE_IF_REQUIRED(user_, user);
2403         QUOTE_IF_REQUIRED(pass_, pass);
2404         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2405
2406         ok = imap_cmd_ok(sock, NULL);
2407         if (ok != IMAP_SUCCESS)
2408                 log_warning(_("IMAP4 login failed.\n"));
2409
2410         return ok;
2411 }
2412
2413 static gint imap_cmd_logout(SockInfo *sock)
2414 {
2415         imap_cmd_gen_send(sock, "LOGOUT");
2416         return imap_cmd_ok(sock, NULL);
2417 }
2418
2419 /* Send a NOOP, and examine the server's response to see whether this
2420  * connection is pre-authenticated or not. */
2421 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2422 {
2423         GPtrArray *argbuf;
2424         gint r;
2425
2426         imap_cmd_gen_send(sock, "NOOP");
2427         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2428         r = imap_cmd_ok(sock, argbuf);
2429         *is_preauth = search_array_str(argbuf, "PREAUTH") != NULL;
2430
2431         ptr_array_free_strings(argbuf);
2432         g_ptr_array_free(argbuf, TRUE);
2433
2434         return r;
2435 }
2436
2437 static void imap_get_capability(Session *session)
2438 {
2439         gchar *capstr;
2440         GPtrArray *argbuf;
2441
2442         if (IMAP_SESSION(session)->capability != NULL)
2443                 return;
2444
2445         imap_cmd_gen_send(session->sock, "CAPABILITY");
2446
2447         argbuf = g_ptr_array_new();
2448
2449         if (imap_cmd_ok(session->sock, argbuf) != IMAP_SUCCESS ||
2450             ((capstr = search_array_str(argbuf, "CAPABILITY ")) == NULL)) {
2451                 ptr_array_free_strings(argbuf);
2452                 g_ptr_array_free(argbuf, TRUE);
2453                 return;
2454         }
2455
2456         capstr += strlen("CAPABILITY ");
2457
2458         IMAP_SESSION(session)->capability = g_strsplit(capstr, " ", 0);
2459
2460         ptr_array_free_strings(argbuf);
2461         g_ptr_array_free(argbuf, TRUE);
2462 }
2463
2464 static gboolean imap_has_capability(IMAPSession *session, const gchar *cap)
2465 {
2466         gchar **p;
2467
2468         for (p = session->capability; *p != NULL; ++p)
2469                 if (g_strcasecmp(*p, cap) == 0)
2470                         return TRUE;
2471
2472         return FALSE;
2473 }
2474
2475 static gint imap_cmd_noop(SockInfo *sock)
2476 {
2477         imap_cmd_gen_send(sock, "NOOP");
2478         return imap_cmd_ok(sock, NULL);
2479 }
2480
2481 static gint imap_cmd_starttls(SockInfo *sock)
2482 {
2483         imap_cmd_gen_send(sock, "STARTTLS");
2484         return imap_cmd_ok(sock, NULL);
2485 }
2486
2487 #define THROW(err) { ok = err; goto catch; }
2488
2489 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2490 {
2491         gint ok;
2492         GPtrArray *argbuf;
2493         gchar *str;
2494
2495         argbuf = g_ptr_array_new();
2496
2497         imap_cmd_gen_send(sock, "NAMESPACE");
2498         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2499
2500         str = search_array_str(argbuf, "NAMESPACE");
2501         if (!str) THROW(IMAP_ERROR);
2502
2503         *ns_str = g_strdup(str);
2504
2505 catch:
2506         ptr_array_free_strings(argbuf);
2507         g_ptr_array_free(argbuf, TRUE);
2508
2509         return ok;
2510 }
2511
2512 #undef THROW
2513
2514 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2515                           const gchar *mailbox, GPtrArray *argbuf)
2516 {
2517         gchar *ref_, *mailbox_;
2518
2519         if (!ref) ref = "\"\"";
2520         if (!mailbox) mailbox = "\"\"";
2521
2522         QUOTE_IF_REQUIRED(ref_, ref);
2523         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2524         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2525
2526         return imap_cmd_ok(sock, argbuf);
2527 }
2528
2529 #define THROW goto catch
2530
2531 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2532                                gboolean examine,
2533                                gint *exists, gint *recent, gint *unseen,
2534                                guint32 *uid_validity)
2535 {
2536         gint ok;
2537         gchar *resp_str;
2538         GPtrArray *argbuf;
2539         gchar *select_cmd;
2540         gchar *folder_;
2541
2542         *exists = *recent = *unseen = *uid_validity = 0;
2543         argbuf = g_ptr_array_new();
2544
2545         if (examine)
2546                 select_cmd = "EXAMINE";
2547         else
2548                 select_cmd = "SELECT";
2549
2550         QUOTE_IF_REQUIRED(folder_, folder);
2551         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2552
2553         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2554
2555         resp_str = search_array_contain_str(argbuf, "EXISTS");
2556         if (resp_str) {
2557                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2558                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2559                         THROW;
2560                 }
2561         }
2562
2563         resp_str = search_array_contain_str(argbuf, "RECENT");
2564         if (resp_str) {
2565                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2566                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2567                         THROW;
2568                 }
2569         }
2570
2571         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2572         if (resp_str) {
2573                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2574                     != 1) {
2575                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2576                         THROW;
2577                 }
2578         }
2579
2580         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2581         if (resp_str) {
2582                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2583                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2584                         THROW;
2585                 }
2586         }
2587
2588 catch:
2589         ptr_array_free_strings(argbuf);
2590         g_ptr_array_free(argbuf, TRUE);
2591
2592         return ok;
2593 }
2594
2595 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2596                             gint *exists, gint *recent, gint *unseen,
2597                             guint32 *uid_validity)
2598 {
2599         return imap_cmd_do_select(sock, folder, FALSE,
2600                                   exists, recent, unseen, uid_validity);
2601 }
2602
2603 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2604                              gint *exists, gint *recent, gint *unseen,
2605                              guint32 *uid_validity)
2606 {
2607         return imap_cmd_do_select(sock, folder, TRUE,
2608                                   exists, recent, unseen, uid_validity);
2609 }
2610
2611 #undef THROW
2612
2613 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2614 {
2615         gchar *folder_;
2616
2617         QUOTE_IF_REQUIRED(folder_, folder);
2618         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2619
2620         return imap_cmd_ok(sock, NULL);
2621 }
2622
2623 static gint imap_cmd_rename(SockInfo *sock, const gchar *old_folder,
2624                             const gchar *new_folder)
2625 {
2626         gchar *old_folder_, *new_folder_;
2627
2628         QUOTE_IF_REQUIRED(old_folder_, old_folder);
2629         QUOTE_IF_REQUIRED(new_folder_, new_folder);
2630         imap_cmd_gen_send(sock, "RENAME %s %s", old_folder_, new_folder_);
2631
2632         return imap_cmd_ok(sock, NULL);
2633 }
2634
2635 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2636 {
2637         gchar *folder_;
2638
2639         QUOTE_IF_REQUIRED(folder_, folder);
2640         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2641
2642         return imap_cmd_ok(sock, NULL);
2643 }
2644
2645 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2646 {
2647         gint ok;
2648         gchar *buf;
2649         gchar *cur_pos;
2650         gchar size_str[32];
2651         glong size_num;
2652
2653         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2654
2655         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2656
2657         while ((ok = imap_cmd_gen_recv(sock, &buf))
2658                == IMAP_SUCCESS) {
2659                 if (buf[0] != '*' || buf[1] != ' ') {
2660                         g_free(buf);
2661                         return IMAP_ERROR;
2662                 }
2663                 if (strstr(buf, "FETCH") != NULL)
2664                         break;
2665         }
2666         if (ok != IMAP_SUCCESS)
2667                 return ok;
2668
2669         cur_pos = strchr(buf, '{');
2670         if (cur_pos == NULL) {
2671                 g_free(buf);
2672                 return IMAP_ERROR;
2673         }
2674         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2675         if (cur_pos == NULL) {
2676                 g_free(buf);
2677                 return IMAP_ERROR;
2678         }
2679         size_num = atol(size_str);
2680
2681         if (*cur_pos != '\0') {
2682                 g_free(buf);
2683                 return IMAP_ERROR;
2684         }
2685
2686         if (recv_bytes_write_to_file(sock, size_num, filename) != 0) {
2687                 g_free(buf);
2688                 return IMAP_ERROR;
2689         }
2690
2691         if (imap_cmd_gen_recv(sock, &buf) != IMAP_SUCCESS) {
2692                 g_free(buf);
2693                 return IMAP_ERROR;
2694         }
2695
2696         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')') {
2697                 g_free(buf);
2698                 return IMAP_ERROR;
2699         }
2700
2701         g_free(buf);
2702         ok = imap_cmd_ok(sock, NULL);
2703
2704         return ok;
2705 }
2706
2707 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2708                             const gchar *file)
2709 {
2710         gint ok;
2711         gint size;
2712         gchar *destfolder_;
2713         gchar buf[BUFFSIZE], *imapbuf;
2714         FILE *fp;
2715
2716         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2717
2718         size = get_file_size_as_crlf(file);
2719         if ((fp = fopen(file, "rb")) == NULL) {
2720                 FILE_OP_ERROR(file, "fopen");
2721                 return -1;
2722         }
2723         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2724         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2725
2726         ok = imap_cmd_gen_recv(sock, &imapbuf);
2727         if (ok != IMAP_SUCCESS || imapbuf[0] != '+' || imapbuf[1] != ' ') {
2728                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2729                 g_free(imapbuf);
2730                 fclose(fp);
2731                 return IMAP_ERROR;
2732         }
2733         g_free(imapbuf);
2734
2735         log_print("IMAP4> %s\n", _("(sending file...)"));
2736
2737         while (fgets(buf, sizeof(buf), fp) != NULL) {
2738                 strretchomp(buf);
2739                 if (sock_puts(sock, buf) < 0) {
2740                         fclose(fp);
2741                         sock_close(sock);
2742                         return -1;
2743                 }
2744         }
2745
2746         if (ferror(fp)) {
2747                 FILE_OP_ERROR(file, "fgets");
2748                 fclose(fp);
2749                 sock_close(sock);
2750                 return -1;
2751         }
2752
2753         sock_puts(sock, "");
2754
2755         fclose(fp);
2756         return imap_cmd_ok(sock, NULL);
2757 }
2758
2759 #if 0
2760 static void imap_uidplus_copy(IMAPSession *session, MsgInfo *msginfo,
2761                                 const gchar *destfolder, const gchar *okmsginfo)
2762 {
2763         unsigned int olduid, newuid;
2764         IMAPFlags iflags = 0;
2765
2766         if (okmsginfo == NULL)
2767                 return;
2768
2769         if (sscanf(okmsginfo, "%*u OK [COPYUID %*llu %u %u]", &olduid, &newuid) != 2)
2770                 return;
2771
2772         if (olduid != msginfo->msgnum)  /* this should NEVER happen */
2773                 return;
2774
2775         if (imap_select(session, IMAP_FOLDER(msginfo->folder->folder), destfolder,
2776                         NULL, NULL, NULL, NULL) != IMAP_SUCCESS)
2777                 return;
2778
2779         if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2780         if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2781         if (iflags)
2782                 imap_set_message_flags(session, newuid, newuid, iflags, TRUE);
2783
2784         if (msginfo->flags.perm_flags & MSG_UNREAD)
2785                 imap_set_message_flags(session, newuid, newuid, IMAP_FLAG_SEEN, FALSE);
2786
2787         imap_select(session, IMAP_FOLDER(msginfo->folder->folder), msginfo->folder->path,
2788                     NULL, NULL, NULL, NULL);
2789 }
2790 #endif
2791
2792 static gint imap_cmd_copy(IMAPSession *session,
2793     gint32 msgnum, const gchar *destfolder, gint32 *new_uid)
2794 {
2795         gint ok;
2796         gint32 olduid, newuid;
2797         gchar *okmsginfo;
2798         gchar *destfolder_;
2799         GPtrArray *reply;
2800
2801         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2802         g_return_val_if_fail(session != NULL, IMAP_ERROR);
2803         g_return_val_if_fail(new_uid != NULL, IMAP_ERROR);
2804
2805         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2806         imap_cmd_gen_send(SESSION(session)->sock, "UID COPY %d %s", msgnum, destfolder_);
2807
2808         reply = g_ptr_array_new();
2809
2810         ok = imap_cmd_ok(SESSION(session)->sock, reply);
2811         if (ok != IMAP_SUCCESS)
2812                 log_warning(_("can't copy %d to %s\n"), msgnum, destfolder_);
2813         else if (imap_has_capability(session, "UIDPLUS") && reply->len > 0)
2814                 if ((okmsginfo = g_ptr_array_index(reply, reply->len - 1)) != NULL &&
2815                     sscanf(okmsginfo, "%*u OK [COPYUID %*u %u %u]", &olduid, &newuid) == 2 &&
2816                     olduid == msgnum)
2817                         *new_uid = newuid;
2818
2819         ptr_array_free_strings(reply);
2820         g_ptr_array_free(reply, TRUE);
2821         return ok;
2822 }
2823
2824 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2825 {
2826         static GString *header_fields = NULL;
2827
2828         if (header_fields == NULL) {
2829                 const HeaderEntry *headers, *elem;
2830
2831                 headers = procheader_get_headernames(FALSE);
2832                 header_fields = g_string_new("");
2833
2834                 for (elem = headers; elem->name != NULL; ++elem) {
2835                         gint namelen = strlen(elem->name);
2836
2837                         /* Header fields ending with space are not rfc822 headers */
2838                         if (elem->name[namelen - 1] == ' ')
2839                                 continue;
2840
2841                         /* strip : at the of header field */
2842                         if(elem->name[namelen - 1] == ':')
2843                                 namelen--;
2844
2845                         if (namelen <= 0)
2846                                 continue;
2847
2848                         g_string_sprintfa(header_fields, "%s%.*s",
2849                                         header_fields->str[0] != '\0' ? " " : "",
2850                                         namelen, elem->name);
2851                 }
2852         }
2853
2854         imap_cmd_gen_send
2855                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE BODY.PEEK[HEADER.FIELDS (%s)])",
2856                  first_uid, last_uid,
2857                  header_fields->str);
2858
2859         return IMAP_SUCCESS;
2860 }
2861
2862 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2863                            gchar *sub_cmd)
2864 {
2865         gint ok;
2866
2867         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2868                           first_uid, last_uid, sub_cmd);
2869
2870         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2871                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2872                             first_uid, last_uid, sub_cmd);
2873                 return ok;
2874         }
2875
2876         return IMAP_SUCCESS;
2877 }
2878
2879 static gint imap_cmd_expunge(SockInfo *sock)
2880 {
2881         gint ok;
2882
2883         imap_cmd_gen_send(sock, "EXPUNGE");
2884         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2885                 log_warning(_("error while imap command: EXPUNGE\n"));
2886                 return ok;
2887         }
2888
2889         return IMAP_SUCCESS;
2890 }
2891
2892 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2893 {
2894         gint ok;
2895         gchar *buf;
2896         gint cmd_num;
2897         gchar cmd_status[IMAPBUFSIZE];
2898
2899         while ((ok = imap_cmd_gen_recv(sock, &buf))
2900                == IMAP_SUCCESS) {
2901                 if (buf[0] == '*' && buf[1] == ' ') {
2902                         if (argbuf)
2903                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2904                         continue;
2905                 }
2906
2907                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2908                         return IMAP_ERROR;
2909                 else if (cmd_num == imap_cmd_count &&
2910                          !strcmp(cmd_status, "OK")) {
2911                         if (argbuf)
2912                                 g_ptr_array_add(argbuf, g_strdup(buf));
2913                         g_free(buf);
2914                         return IMAP_SUCCESS;
2915                 } else {
2916                         g_free(buf);
2917                         return IMAP_ERROR;
2918                 }
2919         }
2920         g_free(buf);
2921
2922         return ok;
2923 }
2924
2925 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2926 {
2927         gchar buf[IMAPBUFSIZE];
2928         gchar tmp[IMAPBUFSIZE];
2929         gchar *p;
2930         va_list args;
2931
2932         va_start(args, format);
2933         g_vsnprintf(tmp, sizeof(tmp), format, args);
2934         va_end(args);
2935
2936         imap_cmd_count++;
2937
2938         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2939         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2940                 *p = '\0';
2941                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2942         } else
2943                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2944
2945         sock_write(sock, buf, strlen(buf));
2946 }
2947
2948 static gint imap_cmd_gen_recv(SockInfo *sock, gchar **buf)
2949 {
2950         if ((*buf = sock_getline(sock)) == NULL)
2951                 return IMAP_SOCKET;
2952
2953         strretchomp(*buf);
2954
2955         log_print("IMAP4< %s\n", *buf);
2956
2957         return IMAP_SUCCESS;
2958 }
2959
2960
2961 /* misc utility functions */
2962
2963 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2964 {
2965         gchar *tmp;
2966
2967         dest[0] = '\0';
2968         tmp = strchr(src, ch);
2969         if (!tmp)
2970                 return NULL;
2971
2972         memcpy(dest, src, MIN(tmp - src, len - 1));
2973         dest[MIN(tmp - src, len - 1)] = '\0';
2974
2975         return tmp + 1;
2976 }
2977
2978 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
2979 {
2980         const gchar *p = src;
2981         gint n = 0;
2982
2983         g_return_val_if_fail(*p == ch, NULL);
2984
2985         *dest = '\0';
2986         p++;
2987
2988         while (*p != '\0' && *p != ch) {
2989                 if (n < len - 1) {
2990                         if (*p == '\\' && *(p + 1) != '\0')
2991                                 p++;
2992                         *dest++ = *p++;
2993                 } else
2994                         p++;
2995                 n++;
2996         }
2997
2998         *dest = '\0';
2999         return (gchar *)(*p == ch ? p + 1 : p);
3000 }
3001
3002 static gchar *search_array_contain_str(GPtrArray *array, const gchar *str)
3003 {
3004         gint i;
3005
3006         for (i = 0; i < array->len; i++) {
3007                 gchar *tmp;
3008
3009                 tmp = g_ptr_array_index(array, i);
3010                 if (strstr(tmp, str) != NULL)
3011                         return tmp;
3012         }
3013
3014         return NULL;
3015 }
3016
3017 static gchar *search_array_str(GPtrArray *array, const gchar *str)
3018 {
3019         gint i;
3020         gint len;
3021
3022         len = strlen(str);
3023
3024         for (i = 0; i < array->len; i++) {
3025                 gchar *tmp;
3026
3027                 tmp = g_ptr_array_index(array, i);
3028                 if (!strncmp(tmp, str, len))
3029                         return tmp;
3030         }
3031
3032         return NULL;
3033 }
3034
3035 static void imap_path_separator_subst(gchar *str, gchar separator)
3036 {
3037         gchar *p;
3038         gboolean in_escape = FALSE;
3039
3040         if (!separator || separator == '/') return;
3041
3042         for (p = str; *p != '\0'; p++) {
3043                 if (*p == '/' && !in_escape)
3044                         *p = separator;
3045                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
3046                         in_escape = TRUE;
3047                 else if (*p == '-' && in_escape)
3048                         in_escape = FALSE;
3049         }
3050 }
3051
3052 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
3053 {
3054 #if !HAVE_ICONV
3055         return g_strdup(mutf7_str);
3056 #else
3057         static iconv_t cd = (iconv_t)-1;
3058         static gboolean iconv_ok = TRUE;
3059         GString *norm_utf7;
3060         gchar *norm_utf7_p;
3061         size_t norm_utf7_len;
3062         const gchar *p;
3063         gchar *to_str, *to_p;
3064         size_t to_len;
3065         gboolean in_escape = FALSE;
3066
3067         if (!iconv_ok) return g_strdup(mutf7_str);
3068
3069         if (cd == (iconv_t)-1) {
3070                 cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
3071                 if (cd == (iconv_t)-1) {
3072                         g_warning("iconv cannot convert UTF-7 to %s\n",
3073                                   conv_get_current_charset_str());
3074                         iconv_ok = FALSE;
3075                         return g_strdup(mutf7_str);
3076                 }
3077         }
3078
3079         norm_utf7 = g_string_new(NULL);
3080
3081         for (p = mutf7_str; *p != '\0'; p++) {
3082                 /* replace: '&'  -> '+',
3083                             "&-" -> '&',
3084                             escaped ','  -> '/' */
3085                 if (!in_escape && *p == '&') {
3086                         if (*(p + 1) != '-') {
3087                                 g_string_append_c(norm_utf7, '+');
3088                                 in_escape = TRUE;
3089                         } else {
3090                                 g_string_append_c(norm_utf7, '&');
3091                                 p++;
3092                         }
3093                 } else if (in_escape && *p == ',') {
3094                         g_string_append_c(norm_utf7, '/');
3095                 } else if (in_escape && *p == '-') {
3096                         g_string_append_c(norm_utf7, '-');
3097                         in_escape = FALSE;
3098                 } else {
3099                         g_string_append_c(norm_utf7, *p);
3100                 }
3101         }
3102
3103         norm_utf7_p = norm_utf7->str;
3104         norm_utf7_len = norm_utf7->len;
3105         to_len = strlen(mutf7_str) * 5;
3106         to_p = to_str = g_malloc(to_len + 1);
3107
3108         if (iconv(cd, (ICONV_CONST gchar **)&norm_utf7_p, &norm_utf7_len,
3109                   &to_p, &to_len) == -1) {
3110                 g_warning(_("iconv cannot convert UTF-7 to %s\n"),
3111                           conv_get_current_charset_str());
3112                 g_string_free(norm_utf7, TRUE);
3113                 g_free(to_str);
3114                 return g_strdup(mutf7_str);
3115         }
3116
3117         /* second iconv() call for flushing */
3118         iconv(cd, NULL, NULL, &to_p, &to_len);
3119         g_string_free(norm_utf7, TRUE);
3120         *to_p = '\0';
3121
3122         return to_str;
3123 #endif /* !HAVE_ICONV */
3124 }
3125
3126 static gchar *imap_locale_to_modified_utf7(const gchar *from)
3127 {
3128 #if !HAVE_ICONV
3129         return g_strdup(from);
3130 #else
3131         static iconv_t cd = (iconv_t)-1;
3132         static gboolean iconv_ok = TRUE;
3133         gchar *norm_utf7, *norm_utf7_p;
3134         size_t from_len, norm_utf7_len;
3135         GString *to_str;
3136         gchar *from_tmp, *to, *p;
3137         gboolean in_escape = FALSE;
3138
3139         if (!iconv_ok) return g_strdup(from);
3140
3141         if (cd == (iconv_t)-1) {
3142                 cd = iconv_open("UTF-7", conv_get_current_charset_str());
3143                 if (cd == (iconv_t)-1) {
3144                         g_warning("iconv cannot convert %s to UTF-7\n",
3145                                   conv_get_current_charset_str());
3146                         iconv_ok = FALSE;
3147                         return g_strdup(from);
3148                 }
3149         }
3150
3151         Xstrdup_a(from_tmp, from, return g_strdup(from));
3152         from_len = strlen(from);
3153         norm_utf7_len = from_len * 5;
3154         Xalloca(norm_utf7, norm_utf7_len + 1, return g_strdup(from));
3155         norm_utf7_p = norm_utf7;
3156
3157 #define IS_PRINT(ch) (isprint(ch) && isascii(ch))
3158
3159         while (from_len > 0) {
3160                 if (IS_PRINT(*from_tmp)) {
3161                         /* printable ascii char */
3162                         *norm_utf7_p = *from_tmp;
3163                         norm_utf7_p++;
3164                         from_tmp++;
3165                         from_len--;
3166                 } else {
3167                         size_t mblen;
3168
3169                         /* unprintable char: convert to UTF-7 */
3170                         for (mblen = 0;
3171                              !IS_PRINT(from_tmp[mblen]) && mblen < from_len;
3172                              mblen++)
3173                                 ;
3174                         from_len -= mblen;
3175                         if (iconv(cd, (ICONV_CONST gchar **)&from_tmp, &mblen,
3176                                   &norm_utf7_p, &norm_utf7_len) == -1) {
3177                                 g_warning("iconv cannot convert %s to UTF-7\n",
3178                                           conv_get_current_charset_str());
3179                                 return g_strdup(from);
3180                         }
3181
3182                         /* second iconv() call for flushing */
3183                         iconv(cd, NULL, NULL, &norm_utf7_p, &norm_utf7_len);
3184                 }
3185         }
3186
3187 #undef IS_PRINT
3188
3189         *norm_utf7_p = '\0';
3190         to_str = g_string_new(NULL);
3191         for (p = norm_utf7; p < norm_utf7_p; p++) {
3192                 /* replace: '&' -> "&-",
3193                             '+' -> '&',
3194                             escaped '/' -> ',' */
3195                 if (!in_escape && *p == '&') {
3196                         g_string_append(to_str, "&-");
3197                 } else if (!in_escape && *p == '+') {
3198                         g_string_append_c(to_str, '&');
3199                         in_escape = TRUE;
3200                 } else if (in_escape && *p == '/') {
3201                         g_string_append_c(to_str, ',');
3202                 } else if (in_escape && *p == '-') {
3203                         in_escape = FALSE;
3204                         g_string_append_c(to_str, '-');
3205                 } else {
3206                         g_string_append_c(to_str, *p);
3207                 }
3208         }
3209
3210         if (in_escape) {
3211                 in_escape = FALSE;
3212                 g_string_append_c(to_str, '-');
3213         }
3214
3215         to = to_str->str;
3216         g_string_free(to_str, FALSE);
3217
3218         return to;
3219 #endif /* !HAVE_ICONV */
3220 }
3221
3222 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
3223 {
3224         FolderItem *item = node->data;
3225         gchar **paths = data;
3226         const gchar *oldpath = paths[0];
3227         const gchar *newpath = paths[1];
3228         gchar *base;
3229         gchar *new_itempath;
3230         gint oldpathlen;
3231
3232         oldpathlen = strlen(oldpath);
3233         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
3234                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
3235                 return TRUE;
3236         }
3237
3238         base = item->path + oldpathlen;
3239         while (*base == G_DIR_SEPARATOR) base++;
3240         if (*base == '\0')
3241                 new_itempath = g_strdup(newpath);
3242         else
3243                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
3244                                            NULL);
3245         g_free(item->path);
3246         item->path = new_itempath;
3247
3248         return FALSE;
3249 }
3250
3251 gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list)
3252 {
3253         IMAPFolderItem *item = (IMAPFolderItem *)_item;
3254         IMAPSession *session;
3255         gint ok, lastuid_old, nummsgs = 0, exists, resent, unseen, uid_val;
3256         gint msgnum;
3257         GPtrArray *argbuf;
3258         gchar *cmdbuf = NULL;
3259         gchar *dir;
3260         gchar *uidlist;
3261         gchar **p, **list;
3262
3263         g_return_val_if_fail(folder != NULL, -1);
3264         g_return_val_if_fail(item != NULL, -1);
3265         g_return_val_if_fail(item->item.path != NULL, -1);
3266         g_return_val_if_fail(folder->type == F_IMAP, -1);
3267         g_return_val_if_fail(folder->account != NULL, -1);
3268
3269         session = imap_session_get(folder);
3270         g_return_val_if_fail(session != NULL, -1);
3271
3272         ok = imap_select(session, IMAP_FOLDER(folder), item->item.path,
3273                          &exists, &resent, &unseen, &uid_val);
3274         if (ok != IMAP_SUCCESS)
3275                 return -1;
3276
3277         if (exists == 0)
3278                 return 0;
3279
3280         argbuf = g_ptr_array_new();
3281         cmdbuf = g_strdup_printf("UID SEARCH UID %d:*", item->lastuid + 1);
3282         imap_cmd_gen_send(SESSION(session)->sock, cmdbuf);
3283         g_free(cmdbuf);
3284         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
3285         if (ok != IMAP_SUCCESS) {
3286                 if (ok == IMAP_SOCKET) {
3287                         session_destroy((Session *)session);
3288                         ((RemoteFolder *)folder)->session = NULL;
3289                 }
3290
3291                 ptr_array_free_strings(argbuf);
3292                 g_ptr_array_free(argbuf, TRUE);
3293                 return -1;
3294         }
3295
3296         lastuid_old = item->lastuid;
3297         *msgnum_list = g_slist_copy(item->uid_list);
3298         debug_print("Got %d uids from cache\n", g_slist_length(item->uid_list));
3299
3300         if ((uidlist = search_array_str(argbuf, "SEARCH ")) != NULL) {
3301                 list = g_strsplit(uidlist + 7, " ", 0);
3302                 for (p = list; *p != NULL; ++p) {
3303                         if (sscanf(*p, "%d", &msgnum) == 1 && msgnum > lastuid_old) {
3304                                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(msgnum));
3305                                 item->uid_list = g_slist_prepend(item->uid_list, GINT_TO_POINTER(msgnum));
3306                                 nummsgs++;
3307
3308                                 if(msgnum > item->lastuid)
3309                                         item->lastuid = msgnum;
3310                         }
3311                 }
3312                 g_strfreev(list);
3313         }
3314
3315         if (g_slist_length(item->uid_list) != exists) {
3316                 /* Cache contains more messages then folder, we have cached
3317                    an old UID of a message that was removed */
3318                 debug_print("Freeing imap uid cache");
3319                 item->lastuid = 0;
3320                 g_slist_free(item->uid_list);
3321                 item->uid_list = NULL;
3322
3323                 g_slist_free(*msgnum_list);
3324
3325                 return imap_get_num_list(folder, _item, msgnum_list);
3326         }
3327
3328         dir = folder_item_get_path((FolderItem *)item);
3329         debug_print("removing old messages from %s\n", dir);
3330         remove_numbered_files_not_in_list(dir, *msgnum_list);
3331         g_free(dir);
3332
3333         ptr_array_free_strings(argbuf);
3334         g_ptr_array_free(argbuf, TRUE);
3335
3336         return nummsgs;
3337 }
3338
3339 static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item)
3340 {
3341         MsgInfo *msginfo;
3342         MsgFlags flags;
3343
3344         flags.perm_flags = MSG_NEW|MSG_UNREAD;
3345         flags.tmp_flags = 0;
3346
3347         g_return_val_if_fail(item != NULL, NULL);
3348         g_return_val_if_fail(file != NULL, NULL);
3349
3350         if (item->stype == F_QUEUE) {
3351                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
3352         } else if (item->stype == F_DRAFT) {
3353                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
3354         }
3355
3356         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
3357         if (!msginfo) return NULL;
3358
3359         msginfo->folder = item;
3360
3361         return msginfo;
3362 }
3363
3364 static int compare_uint(gconstpointer a, gconstpointer b)
3365 {
3366         return a-b;
3367 }
3368
3369 GSList *imap_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
3370 {
3371         IMAPSession *session;
3372         GSList *sorted_list, *elem, *ret = NULL;
3373         gint ok, startnum, lastnum;
3374
3375         g_return_val_if_fail(folder != NULL, NULL);
3376         g_return_val_if_fail(item != NULL, NULL);
3377         g_return_val_if_fail(msgnum_list != NULL, NULL);
3378
3379         session = imap_session_get(folder);
3380         g_return_val_if_fail(session != NULL, NULL);
3381
3382         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
3383                          NULL, NULL, NULL, NULL);
3384         if (ok != IMAP_SUCCESS)
3385                 return NULL;
3386
3387         sorted_list = g_slist_sort(g_slist_copy(msgnum_list), compare_uint);
3388
3389         startnum = lastnum = GPOINTER_TO_INT(sorted_list->data);
3390
3391         for (elem = sorted_list;; elem = g_slist_next(elem)) {
3392                 guint num;
3393
3394                 if (elem)
3395                         num = GPOINTER_TO_INT(elem->data);
3396
3397                 if (num > lastnum + 1 || elem == NULL) {
3398                         if (!(item->stype == F_QUEUE || item->stype == F_DRAFT)) {
3399                                 ret = g_slist_concat(ret,
3400                                         imap_get_uncached_messages(
3401                                                 session, item, startnum, lastnum));
3402                         } else {
3403                                 int i;
3404                                 for (i = startnum; i <= lastnum; ++i) {
3405                                         gchar *file;
3406
3407                                         file = imap_fetch_msg(folder, item, i);
3408                                         if (file != NULL) {
3409                                                 MsgInfo *msginfo = imap_parse_msg(file, item);
3410                                                 if (msginfo != NULL) {
3411                                                         msginfo->msgnum = i;
3412                                                         ret = g_slist_append(ret, msginfo);
3413                                                 }
3414                                                 g_free(file);
3415                                         }
3416                                 }
3417                         }
3418
3419                         if (elem == NULL)
3420                                 break;
3421
3422                         startnum = num;
3423                 }
3424                 lastnum = num;
3425         }
3426
3427         g_slist_free(sorted_list);
3428
3429         return ret;
3430 }
3431
3432 MsgInfo *imap_get_msginfo(Folder *folder, FolderItem *item, gint uid)
3433 {
3434         IMAPSession *session;
3435         MsgInfo *msginfo = NULL;
3436         gint ok;
3437
3438         g_return_val_if_fail(folder != NULL, NULL);
3439         g_return_val_if_fail(item != NULL, NULL);
3440
3441         session = imap_session_get(folder);
3442         g_return_val_if_fail(session != NULL, NULL);
3443
3444         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
3445                          NULL, NULL, NULL, NULL);
3446         if (ok != IMAP_SUCCESS)
3447                 return NULL;
3448
3449         if (!(item->stype == F_QUEUE || item->stype == F_DRAFT)) {
3450                 GSList *list;
3451
3452                 list = imap_get_uncached_messages(session, item, uid, uid);
3453                 if (list) {
3454                         msginfo = (MsgInfo *)list->data;
3455                         list->data = NULL;
3456                 }
3457                 procmsg_msg_list_free(list);
3458         } else {
3459                 gchar *file;
3460
3461                 file = imap_fetch_msg(folder, item, uid);
3462                 if (file != NULL) {
3463                         msginfo = imap_parse_msg(file, item);
3464                         if (msginfo != NULL)
3465                                 msginfo->msgnum = uid;
3466                         g_free(file);
3467                 }
3468         }
3469
3470         return msginfo;
3471 }
3472
3473 gboolean imap_check_msgnum_validity(Folder *folder, FolderItem *_item)
3474 {
3475         IMAPSession *session;
3476         IMAPFolderItem *item = (IMAPFolderItem *)_item;
3477         gint ok, exists = 0, recent = 0, unseen = 0;
3478         guint32 uid_next, uid_validity = 0;
3479
3480         g_return_val_if_fail(folder != NULL, FALSE);
3481         g_return_val_if_fail(item != NULL, FALSE);
3482         g_return_val_if_fail(item->item.folder != NULL, FALSE);
3483         g_return_val_if_fail(item->item.folder->type == F_IMAP, FALSE);
3484
3485         session = imap_session_get(folder);
3486         g_return_val_if_fail(session != NULL, FALSE);
3487
3488         ok = imap_status(session, IMAP_FOLDER(folder), item->item.path,
3489                          &exists, &recent, &uid_next, &uid_validity, &unseen);
3490         if (ok != IMAP_SUCCESS)
3491                 return FALSE;
3492
3493         if(item->item.mtime == uid_validity)
3494                 return TRUE;
3495
3496         debug_print("Freeing imap uid cache");
3497         item->lastuid = 0;
3498         g_slist_free(item->uid_list);
3499         item->uid_list = NULL;
3500
3501         item->item.mtime = uid_validity;
3502
3503         imap_delete_all_cached_messages((FolderItem *)item);
3504
3505         return FALSE;
3506 }