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 FolderClass imap_class =
 298 {
 299         F_IMAP,
 300         "imap",
 301
 302         imap_folder_item_new,
 303         imap_folder_item_destroy,
 304         imap_fetch_msg,
 305         imap_get_msginfo,
 306         imap_get_msginfos,
 307         imap_add_msg,
 308         imap_move_msg,
 309         NULL,
 310         imap_copy_msg,
 311         NULL,
 312         imap_remove_msg,
 313         imap_remove_msgs,
 314         imap_remove_all_msg,
 315         imap_is_msg_changed,
 316         NULL,
 317         imap_get_num_list,
 318         imap_scan_tree,
 319         imap_create_tree,
 320         imap_create_folder,
 321         imap_rename_folder,
 322         imap_remove_folder,
 323         imap_folder_destroy,
 324         NULL,
 325         NULL,
 326         NULL,
 327         NULL,
 328         imap_check_msgnum_validity,
 329 };
 330
 331 FolderClass *imap_get_class()
 332 {
 333         return &imap_class;
 334 }
 335
 336 Folder *imap_folder_new(const gchar *name, const gchar *path)
 337 {
 338         Folder *folder;
 339
 340         folder = (Folder *)g_new0(IMAPFolder, 1);
 341         folder->class = &imap_class;
 342         imap_folder_init(folder, name, path);
 343
 344         return folder;
 345 }
 346
 347 void imap_folder_destroy(Folder *folder)
 348 {
 349         gchar *dir;
 350
 351         dir = folder_get_path(folder);
 352         if (is_dir_exist(dir))
 353                 remove_dir_recursive(dir);
 354         g_free(dir);
 355
 356         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 357 }
 358
 359 static void imap_folder_init(Folder *folder, const gchar *name,
 360                              const gchar *path)
 361 {
 362         folder_remote_folder_init((Folder *)folder, name, path);
 363 }
 364
 365 static FolderItem *imap_folder_item_new(Folder *folder)
 366 {
 367         IMAPFolderItem *item;
 368
 369         item = g_new0(IMAPFolderItem, 1);
 370         item->lastuid = 0;
 371         item->uid_list = NULL;
 372
 373         return (FolderItem *)item;
 374 }
 375
 376 static void imap_folder_item_destroy(Folder *folder, FolderItem *_item)
 377 {
 378         IMAPFolderItem *item = (IMAPFolderItem *)_item;
 379
 380         g_return_if_fail(item != NULL);
 381         g_slist_free(item->uid_list);
 382
 383         g_free(_item);
 384 }
 385
 386 static gboolean imap_reset_uid_lists_func(GNode *node, gpointer data)
 387 {
 388         IMAPFolderItem *item = (IMAPFolderItem *)node->data;
 389
 390         item->lastuid = 0;
 391         g_slist_free(item->uid_list);
 392         item->uid_list = NULL;
 393
 394         return FALSE;
 395 }
 396
 397 static void imap_reset_uid_lists(Folder *folder)
 398 {
 399         if(folder->node == NULL)
 400                 return;
 401
 402         /* Destroy all uid lists and rest last uid */
 403         g_node_traverse(folder->node, G_IN_ORDER, G_TRAVERSE_ALL, -1, imap_reset_uid_lists_func, NULL);
 404 }
 405
 406 static IMAPSession *imap_session_get(Folder *folder)
 407 {
 408         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 409         Session *session = NULL;
 410         gushort port;
 411
 412         g_return_val_if_fail(folder != NULL, NULL);
 413         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, NULL);
 414         g_return_val_if_fail(folder->account != NULL, NULL);
 415
 416 #if USE_OPENSSL
 417         port = folder->account->set_imapport ? folder->account->imapport
 418                 : folder->account->ssl_imap == SSL_TUNNEL
 419                 ? IMAPS_PORT : IMAP4_PORT;
 420 #else
 421         port = folder->account->set_imapport ? folder->account->imapport
 422                 : IMAP4_PORT;
 423 #endif
 424
 425         /* Make sure we have a session */
 426         if (rfolder->session != NULL) {
 427                 session = rfolder->session;
 428         } else {
 429                 imap_reset_uid_lists(folder);
 430                 session = imap_session_new(folder->account);
 431         }
 432         if(session == NULL)
 433                 return NULL;
 434
 435         /* Get CAPABILITY */
 436         imap_get_capability(session);
 437
 438         /* Make sure session is authenticated */
 439         if (!IMAP_SESSION(session)->authenticated)
 440                 imap_session_authenticate(IMAP_SESSION(session), folder->account);
 441         if (!IMAP_SESSION(session)->authenticated) {
 442                 session_destroy(session);
 443                 rfolder->session = NULL;
 444                 return NULL;
 445         }
 446
 447         /* Make sure we have parsed the IMAP namespace */
 448         imap_parse_namespace(IMAP_SESSION(session),
 449                              IMAP_FOLDER(folder));
 450
 451         /* I think the point of this code is to avoid sending a
 452          * keepalive if we've used the session recently and therefore
 453          * think it's still alive.  Unfortunately, most of the code
 454          * does not yet check for errors on the socket, and so if the
 455          * connection drops we don't notice until the timeout expires.
 456          * A better solution than sending a NOOP every time would be
 457          * for every command to be prepared to retry until it is
 458          * successfully sent. -- mbp */
 459         if (time(NULL) - session->last_access_time > SESSION_TIMEOUT) {
 460                 /* verify that the session is still alive */
 461                 if (imap_cmd_noop(session->sock) != IMAP_SUCCESS) {
 462                         /* Check if this is the first try to establish a
 463                            connection, if yes we don't try to reconnect */
 464                         if (rfolder->session == NULL) {
 465                                 log_warning(_("Connecting %s:%d failed"),
 466                                             folder->account->recv_server, port);
 467                                 session_destroy(session);
 468                                 session = NULL;
 469                         } else {
 470                                 log_warning(_("IMAP4 connection to %s:%d has been"
 471                                               " disconnected. Reconnecting...\n"),
 472                                             folder->account->recv_server, port);
 473                                 session_destroy(session);
 474                                 /* Clear folders session to make imap_session_get create
 475                                    a new session, because of rfolder->session == NULL
 476                                    it will not try to reconnect again and so avoid an
 477                                    endless loop */
 478                                 rfolder->session = NULL;
 479                                 session = SESSION(imap_session_get(folder));
 480                         }
 481                 }
 482         }
 483
 484         rfolder->session = session;
 485         if (session) {
 486                 session->last_access_time = time(NULL);
 487         }
 488         return IMAP_SESSION(session);
 489 }
 490
 491 Session *imap_session_new(const PrefsAccount *account)
 492 {
 493         IMAPSession *session;
 494         SockInfo *imap_sock;
 495         gushort port;
 496         gboolean is_preauth;
 497
 498 #ifdef USE_OPENSSL
 499         /* FIXME: IMAP over SSL only... */
 500         SSLType ssl_type;
 501
 502         port = account->set_imapport ? account->imapport
 503                 : account->ssl_imap == SSL_TUNNEL ? IMAPS_PORT : IMAP4_PORT;
 504         ssl_type = account->ssl_imap;
 505 #else
 506         port = account->set_imapport ? account->imapport
 507                 : IMAP4_PORT;
 508 #endif
 509
 510         if (account->set_tunnelcmd) {
 511                 log_message(_("creating tunneled IMAP4 connection\n"));
 512 #if USE_OPENSSL
 513                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 514                                                   account->tunnelcmd,
 515                                                   ssl_type)) == NULL)
 516 #else
 517                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 518                                                   account->tunnelcmd)) == NULL)
 519 #endif
 520                         return NULL;
 521         } else {
 522                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 523
 524                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 525                             account->recv_server, port);
 526
 527 #if USE_OPENSSL
 528                 if ((imap_sock = imap_open(account->recv_server, port,
 529                                            ssl_type)) == NULL)
 530 #else
 531                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 532 #endif
 533                         return NULL;
 534         }
 535
 536         /* Only need to log in if the connection was not PREAUTH */
 537         if (imap_greeting(imap_sock, &is_preauth) != IMAP_SUCCESS) {
 538                 sock_close(imap_sock);
 539                 return NULL;
 540         }
 541         log_message("IMAP connection is %s-authenticated\n",
 542                     (is_preauth) ? "pre" : "un");
 543
 544         session = g_new(IMAPSession, 1);
 545         SESSION(session)->type             = SESSION_IMAP;
 546         SESSION(session)->server           = g_strdup(account->recv_server);
 547         SESSION(session)->sock             = imap_sock;
 548         SESSION(session)->connected        = TRUE;
 549         SESSION(session)->phase            = SESSION_READY;
 550         SESSION(session)->last_access_time = time(NULL);
 551         SESSION(session)->data             = NULL;
 552
 553         SESSION(session)->destroy          = imap_session_destroy;
 554
 555         session->capability = NULL;
 556
 557         session->mbox = NULL;
 558         session->authenticated = is_preauth;
 559
 560         session_list = g_list_append(session_list, session);
 561
 562         return SESSION(session);
 563 }
 564
 565 void imap_session_authenticate(IMAPSession *session, const PrefsAccount *account)
 566 {
 567         gchar *pass;
 568
 569         g_return_if_fail(account->userid != NULL);
 570
 571         pass = account->passwd;
 572         if (!pass) {
 573                 gchar *tmp_pass;
 574                 tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 575                 if (!tmp_pass)
 576                         return;
 577                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return;});
 578                 g_free(tmp_pass);
 579         }
 580
 581         if (imap_cmd_login(SESSION(session)->sock, account->userid, pass) != IMAP_SUCCESS) {
 582                 imap_cmd_logout(SESSION(session)->sock);
 583                 return;
 584         }
 585
 586         session->authenticated = TRUE;
 587 }
 588
 589 void imap_session_destroy(Session *session)
 590 {
 591         sock_close(session->sock);
 592         session->sock = NULL;
 593
 594         g_free(IMAP_SESSION(session)->mbox);
 595
 596         g_strfreev(IMAP_SESSION(session)->capability);
 597
 598         session_list = g_list_remove(session_list, session);
 599 }
 600
 601 void imap_session_destroy_all(void)
 602 {
 603         while (session_list != NULL) {
 604                 IMAPSession *session = (IMAPSession *)session_list->data;
 605
 606                 imap_cmd_logout(SESSION(session)->sock);
 607                 session_destroy(SESSION(session));
 608         }
 609 }
 610
 611 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 612 {
 613         gchar *path, *filename;
 614         IMAPSession *session;
 615         gint ok;
 616
 617         g_return_val_if_fail(folder != NULL, NULL);
 618         g_return_val_if_fail(item != NULL, NULL);
 619
 620         path = folder_item_get_path(item);
 621         if (!is_dir_exist(path))
 622                 make_dir_hier(path);
 623         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 624         g_free(path);
 625
 626         if (is_file_exist(filename)) {
 627                 debug_print("message %d has been already cached.\n", uid);
 628                 return filename;
 629         }
 630
 631         session = imap_session_get(folder);
 632         if (!session) {
 633                 g_free(filename);
 634                 return NULL;
 635         }
 636
 637         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 638                          NULL, NULL, NULL, NULL);
 639         if (ok != IMAP_SUCCESS) {
 640                 g_warning("can't select mailbox %s\n", item->path);
 641                 g_free(filename);
 642                 return NULL;
 643         }
 644
 645         debug_print("getting message %d...\n", uid);
 646         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 647
 648         if (ok != IMAP_SUCCESS) {
 649                 g_warning("can't fetch message %d\n", uid);
 650                 g_free(filename);
 651                 return NULL;
 652         }
 653
 654         return filename;
 655 }
 656
 657 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 658                   gboolean remove_source)
 659 {
 660         gchar *destdir;
 661         IMAPSession *session;
 662         gint ok;
 663
 664         g_return_val_if_fail(folder != NULL, -1);
 665         g_return_val_if_fail(dest != NULL, -1);
 666         g_return_val_if_fail(file != NULL, -1);
 667
 668         session = imap_session_get(folder);
 669         if (!session) return -1;
 670
 671         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 672         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 673         g_free(destdir);
 674
 675         if (ok != IMAP_SUCCESS) {
 676                 g_warning("can't append message %s\n", file);
 677                 return -1;
 678         }
 679
 680         if (remove_source) {
 681                 if (unlink(file) < 0)
 682                         FILE_OP_ERROR(file, "unlink");
 683         }
 684
 685         return 0;
 686 }
 687
 688 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 689                          gboolean remove_source)
 690 {
 691         gchar *destdir;
 692         IMAPSession *session;
 693         IMAPFlags iflags = 0;
 694         gint messages, recent, unseen;
 695         guint32 newuid = 0, uid_validity;
 696         gint ok;
 697
 698         g_return_val_if_fail(folder != NULL, -1);
 699         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
 700         g_return_val_if_fail(dest != NULL, -1);
 701         g_return_val_if_fail(msginfo != NULL, -1);
 702
 703         session = imap_session_get(folder);
 704         if (!session) return -1;
 705
 706         if (msginfo->folder == dest) {
 707                 g_warning("the src folder is identical to the dest.\n");
 708                 return -1;
 709         }
 710
 711         /* if we don't have UIDPLUS we get UID-NEXT and hope that the
 712            message really gets this uid */
 713         if (!imap_has_capability(session, "UIDPLUS")) {
 714                 ok = imap_status(session, IMAP_FOLDER(folder), dest->path,
 715                                  &messages, &recent, &newuid, &uid_validity, &unseen);
 716                 if (ok != IMAP_SUCCESS) {
 717                         g_warning("can't copy message\n");
 718                         return -1;
 719                 }
 720         }
 721
 722         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 723
 724         /* ensure source folder selected */
 725         ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
 726                          NULL, NULL, NULL, NULL);
 727         if (ok != IMAP_SUCCESS)
 728                 return -1;
 729
 730         if (remove_source)
 731                 debug_print("Moving message %s%c%d to %s ...\n",
 732                             msginfo->folder->path, G_DIR_SEPARATOR,
 733                             msginfo->msgnum, destdir);
 734         else
 735                 debug_print("Copying message %s%c%d to %s ...\n",
 736                             msginfo->folder->path, G_DIR_SEPARATOR,
 737                             msginfo->msgnum, destdir);
 738
 739         ok = imap_cmd_copy(session, msginfo->msgnum, destdir, &newuid);
 740
 741         if (ok == IMAP_SUCCESS && remove_source) {
 742                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 743                                        IMAP_FLAG_DELETED, TRUE);
 744                 ok = imap_cmd_expunge(SESSION(session)->sock);
 745         }
 746
 747         /* get the dest folder to set the flags */
 748         if (newuid) {
 749                 ok = imap_select(session, IMAP_FOLDER(folder), dest->path,
 750                                  NULL, NULL, NULL, NULL);
 751                 if (ok != IMAP_SUCCESS)         /* the folder disappeared? */
 752                         return -1;
 753
 754                 if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
 755                 if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
 756                 if (iflags)
 757                         if (imap_set_message_flags(session, newuid, newuid, iflags, TRUE)
 758                             != IMAP_SUCCESS)
 759                                 newuid = 0;
 760         }
 761
 762         g_free(destdir);
 763
 764         if (ok == IMAP_SUCCESS)
 765                 return newuid;
 766         else
 767                 return -1;
 768 }
 769
 770 #if 0
 771 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 772                                         GSList *msglist,
 773                                         gboolean remove_source)
 774 {
 775         gchar *destdir;
 776         GSList *cur;
 777         MsgInfo *msginfo;
 778         IMAPSession *session;
 779         gint ok = IMAP_SUCCESS;
 780
 781         g_return_val_if_fail(folder != NULL, -1);
 782         g_return_val_if_fail(dest != NULL, -1);
 783         g_return_val_if_fail(msglist != NULL, -1);
 784
 785         session = imap_session_get(folder);
 786         if (!session) return -1;
 787
 788         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 789
 790         for (cur = msglist; cur != NULL; cur = cur->next) {
 791                 msginfo = (MsgInfo *)cur->data;
 792
 793                 if (msginfo->folder == dest) {
 794                         g_warning("the src folder is identical to the dest.\n");
 795                         continue;
 796                 }
 797
 798                 /* ensure source folder selected */
 799                 ok = imap_select(session, IMAP_FOLDER(folder),
 800                                  msginfo->folder->path, NULL, NULL, NULL, NULL);
 801
 802                 if (remove_source)
 803                         debug_print("Moving message %s%c%d to %s ...\n",
 804                                     msginfo->folder->path, G_DIR_SEPARATOR,
 805                                     msginfo->msgnum, destdir);
 806                 else
 807                         debug_print("Copying message %s%c%d to %s ...\n",
 808                                     msginfo->folder->path, G_DIR_SEPARATOR,
 809                                     msginfo->msgnum, destdir);
 810
 811                 ok = imap_cmd_copy(session, msginfo, destdir);
 812
 813                 if (ok == IMAP_SUCCESS && remove_source) {
 814                         imap_set_message_flags
 815                                 (session, msginfo->msgnum, msginfo->msgnum,
 816                                  IMAP_FLAG_DELETED, TRUE);
 817                 }
 818         }
 819
 820         if (remove_source)
 821                 ok = imap_cmd_expunge(SESSION(session)->sock);
 822
 823         g_free(destdir);
 824
 825         if (ok == IMAP_SUCCESS)
 826                 return 0;
 827         else
 828                 return -1;
 829 }
 830 #endif
 831
 832 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 833 {
 834         gchar *srcfile;
 835         gint ret = 0;
 836
 837         g_return_val_if_fail(folder != NULL, -1);
 838         g_return_val_if_fail(dest != NULL, -1);
 839         g_return_val_if_fail(msginfo != NULL, -1);
 840         g_return_val_if_fail(msginfo->folder != NULL, -1);
 841
 842         if (folder == msginfo->folder->folder)
 843                 return imap_do_copy(folder, dest, msginfo, TRUE);
 844
 845         srcfile = procmsg_get_message_file(msginfo);
 846         if (!srcfile) return -1;
 847
 848         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 849         g_free(srcfile);
 850
 851         if (ret != -1) {
 852                 if(folder_item_remove_msg(msginfo->folder, msginfo->msgnum)) {
 853                         ret = -1;
 854                 }
 855         }
 856
 857         return ret;
 858 }
 859
 860 #if 0
 861 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 862                               GSList *msglist)
 863 {
 864         MsgInfo *msginfo;
 865         GSList *cur;
 866         gint ret = 0;
 867
 868         g_return_val_if_fail(folder != NULL, -1);
 869         g_return_val_if_fail(dest != NULL, -1);
 870         g_return_val_if_fail(msglist != NULL, -1);
 871
 872         msginfo = (MsgInfo *)msglist->data;
 873         if (folder == msginfo->folder->folder)
 874                 return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 875
 876         for (cur = msglist; cur != NULL; cur = cur->next) {
 877                 msginfo = (MsgInfo *)cur->data;
 878                 ret = imap_move_msg(folder, dest, msginfo);
 879                 if (ret == -1) break;
 880         }
 881
 882         return ret;
 883 }
 884 #endif
 885
 886 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 887 {
 888         gchar *srcfile;
 889         gint ret = 0;
 890
 891         g_return_val_if_fail(folder != NULL, -1);
 892         g_return_val_if_fail(dest != NULL, -1);
 893         g_return_val_if_fail(msginfo != NULL, -1);
 894         g_return_val_if_fail(msginfo->folder != NULL, -1);
 895
 896         if (folder == msginfo->folder->folder)
 897                 return imap_do_copy(folder, dest, msginfo, FALSE);
 898
 899         srcfile = procmsg_get_message_file(msginfo);
 900         if (!srcfile) return -1;
 901
 902         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 903
 904         g_free(srcfile);
 905
 906         return ret;
 907 }
 908
 909 #if 0
 910 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 911                               GSList *msglist)
 912 {
 913         MsgInfo *msginfo;
 914         GSList *cur;
 915         gint ret = 0;
 916
 917         g_return_val_if_fail(folder != NULL, -1);
 918         g_return_val_if_fail(dest != NULL, -1);
 919         g_return_val_if_fail(msglist != NULL, -1);
 920
 921         msginfo = (MsgInfo *)msglist->data;
 922         if (folder == msginfo->folder->folder)
 923                 return imap_do_copy_msgs_with_dest
 924                         (folder, dest, msglist, FALSE);
 925
 926         for (cur = msglist; cur != NULL; cur = cur->next) {
 927                 msginfo = (MsgInfo *)cur->data;
 928                 ret = imap_copy_msg(folder, dest, msginfo);
 929                 if (ret == -1) break;
 930         }
 931
 932         return ret;
 933 }
 934 #endif
 935
 936 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 937 {
 938         gint ok;
 939         IMAPSession *session;
 940         gchar *dir;
 941
 942         g_return_val_if_fail(folder != NULL, -1);
 943         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
 944         g_return_val_if_fail(item != NULL, -1);
 945
 946         session = imap_session_get(folder);
 947         if (!session) return -1;
 948
 949         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 950                          NULL, NULL, NULL, NULL);
 951         if (ok != IMAP_SUCCESS)
 952                 return ok;
 953
 954         ok = imap_set_message_flags
 955                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 956                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 957         if (ok != IMAP_SUCCESS) {
 958                 log_warning(_("can't set deleted flags: %d\n"), uid);
 959                 return ok;
 960         }
 961
 962         ok = imap_cmd_expunge(SESSION(session)->sock);
 963         if (ok != IMAP_SUCCESS) {
 964                 log_warning(_("can't expunge\n"));
 965                 return ok;
 966         }
 967
 968         dir = folder_item_get_path(item);
 969         if (is_dir_exist(dir))
 970                 remove_numbered_files(dir, uid, uid);
 971         g_free(dir);
 972
 973         return IMAP_SUCCESS;
 974 }
 975
 976 gint imap_remove_msgs(Folder *folder, FolderItem *item, GSList *msglist)
 977 {
 978         gint ok;
 979         IMAPSession *session;
 980         gchar *dir;
 981         MsgInfo *msginfo;
 982         GSList *cur;
 983         guint32 uid;
 984
 985         g_return_val_if_fail(folder != NULL, -1);
 986         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
 987         g_return_val_if_fail(item != NULL, -1);
 988         g_return_val_if_fail(msglist != NULL, -1);
 989
 990         session = imap_session_get(folder);
 991         if (!session) return -1;
 992
 993         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 994                          NULL, NULL, NULL, NULL);
 995         if (ok != IMAP_SUCCESS)
 996                 return ok;
 997
 998         for (cur = msglist; cur != NULL; cur = cur->next) {
 999                 msginfo = (MsgInfo *)cur->data;
1000                 uid = msginfo->msgnum;
1001                 ok = imap_set_message_flags
1002                         (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
1003                          uid, uid, IMAP_FLAG_DELETED, TRUE);
1004                 if (ok != IMAP_SUCCESS) {
1005                         log_warning(_("can't set deleted flags: %d\n"), uid);
1006                         return ok;
1007                 }
1008         }
1009
1010         ok = imap_cmd_expunge(SESSION(session)->sock);
1011         if (ok != IMAP_SUCCESS) {
1012                 log_warning(_("can't expunge\n"));
1013                 return ok;
1014         }
1015
1016         dir = folder_item_get_path(item);
1017         if (is_dir_exist(dir)) {
1018                 for (cur = msglist; cur != NULL; cur = cur->next) {
1019                         msginfo = (MsgInfo *)cur->data;
1020                         uid = msginfo->msgnum;
1021                         remove_numbered_files(dir, uid, uid);
1022                 }
1023         }
1024         g_free(dir);
1025
1026         return IMAP_SUCCESS;
1027 }
1028
1029 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
1030 {
1031         gint exists, recent, unseen;
1032         guint32 uid_validity;
1033         gint ok;
1034         IMAPSession *session;
1035         gchar *dir;
1036
1037         g_return_val_if_fail(folder != NULL, -1);
1038         g_return_val_if_fail(item != NULL, -1);
1039
1040         session = imap_session_get(folder);
1041         if (!session) return -1;
1042
1043         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
1044                          &exists, &recent, &unseen, &uid_validity);
1045         if (ok != IMAP_SUCCESS)
1046                 return ok;
1047         if (exists == 0)
1048                 return IMAP_SUCCESS;
1049
1050         imap_cmd_gen_send(SESSION(session)->sock,
1051                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
1052         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
1053         if (ok != IMAP_SUCCESS) {
1054                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
1055                 return ok;
1056         }
1057
1058         ok = imap_cmd_expunge(SESSION(session)->sock);
1059         if (ok != IMAP_SUCCESS) {
1060                 log_warning(_("can't expunge\n"));
1061                 return ok;
1062         }
1063
1064         dir = folder_item_get_path(item);
1065         if (is_dir_exist(dir))
1066                 remove_all_numbered_files(dir);
1067         g_free(dir);
1068
1069         return IMAP_SUCCESS;
1070 }
1071
1072 gboolean imap_is_msg_changed(Folder *folder, FolderItem *item, MsgInfo *msginfo)
1073 {
1074         /* TODO: properly implement this method */
1075         return FALSE;
1076 }
1077
1078 gint imap_scan_folder(Folder *folder, FolderItem *item)
1079 {
1080         IMAPSession *session;
1081         gint messages, recent, unseen;
1082         guint32 uid_next, uid_validity;
1083         gint ok;
1084
1085         g_return_val_if_fail(folder != NULL, -1);
1086         g_return_val_if_fail(item != NULL, -1);
1087
1088         session = imap_session_get(folder);
1089         if (!session) return -1;
1090
1091         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
1092                          &messages, &recent, &uid_next, &uid_validity, &unseen);
1093         if (ok != IMAP_SUCCESS) return -1;
1094
1095         item->new = unseen > 0 ? recent : 0;
1096         item->unread = unseen;
1097         item->total = messages;
1098         item->last_num = (messages > 0 && uid_next > 0) ? uid_next - 1 : 0;
1099         /* item->mtime = uid_validity; */
1100
1101         return 0;
1102 }
1103
1104 void imap_scan_tree(Folder *folder)
1105 {
1106         FolderItem *item;
1107         IMAPSession *session;
1108         gchar *root_folder = NULL;
1109
1110         g_return_if_fail(folder != NULL);
1111         g_return_if_fail(folder->account != NULL);
1112
1113         session = imap_session_get(folder);
1114         if (!session) {
1115                 if (!folder->node) {
1116                         folder_tree_destroy(folder);
1117                         item = folder_item_new(folder, folder->name, NULL);
1118                         item->folder = folder;
1119                         folder->node = g_node_new(item);
1120                 }
1121                 return;
1122         }
1123
1124         if (folder->account->imap_dir && *folder->account->imap_dir) {
1125                 Xstrdup_a(root_folder, folder->account->imap_dir, return);
1126                 strtailchomp(root_folder, '/');
1127                 debug_print("IMAP root directory: %s\n", root_folder);
1128         }
1129
1130         item = folder_item_new(folder, folder->name, root_folder);
1131         item->folder = folder;
1132         item->no_select = TRUE;
1133         folder->node = g_node_new(item);
1134
1135         imap_scan_tree_recursive(session, item);
1136
1137         imap_create_missing_folders(folder);
1138 }
1139
1140 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item)
1141 {
1142         Folder *folder;
1143         IMAPFolder *imapfolder;
1144         FolderItem *new_item;
1145         GSList *item_list, *cur;
1146         gchar *real_path;
1147         gchar *wildcard_path;
1148         gchar separator;
1149         gchar wildcard[3];
1150
1151         g_return_val_if_fail(item != NULL, -1);
1152         g_return_val_if_fail(item->folder != NULL, -1);
1153         g_return_val_if_fail(item->no_sub == FALSE, -1);
1154
1155         folder = FOLDER(item->folder);
1156         imapfolder = IMAP_FOLDER(folder);
1157
1158         separator = imap_get_path_separator(imapfolder, item->path);
1159
1160         if (item->folder->ui_func)
1161                 item->folder->ui_func(folder, item, folder->ui_func_data);
1162
1163         if (item->path) {
1164                 wildcard[0] = separator;
1165                 wildcard[1] = '%';
1166                 wildcard[2] = '\0';
1167                 real_path = imap_get_real_path(imapfolder, item->path);
1168         } else {
1169                 wildcard[0] = '%';
1170                 wildcard[1] = '\0';
1171                 real_path = g_strdup("");
1172         }
1173
1174         Xstrcat_a(wildcard_path, real_path, wildcard,
1175                   {g_free(real_path); return IMAP_ERROR;});
1176         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
1177
1178         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
1179                           wildcard_path);
1180
1181         strtailchomp(real_path, separator);
1182         item_list = imap_parse_list(folder, session, real_path, NULL);
1183         g_free(real_path);
1184
1185         for (cur = item_list; cur != NULL; cur = cur->next) {
1186                 new_item = cur->data;
1187                 if (!strcmp(new_item->path, "INBOX")) {
1188                         if (!folder->inbox) {
1189                                 new_item->stype = F_INBOX;
1190                                 item->folder->inbox = new_item;
1191                         } else {
1192                                 folder_item_destroy(new_item);
1193                                 continue;
1194                         }
1195                 } else if (!item->parent || item->stype == F_INBOX) {
1196                         gchar *base;
1197
1198                         base = g_basename(new_item->path);
1199
1200                         if (!folder->outbox && !strcasecmp(base, "Sent")) {
1201                                 new_item->stype = F_OUTBOX;
1202                                 folder->outbox = new_item;
1203                         } else if (!folder->draft && !strcasecmp(base, "Drafts")) {
1204                                 new_item->stype = F_DRAFT;
1205                                 folder->draft = new_item;
1206                         } else if (!folder->queue && !strcasecmp(base, "Queue")) {
1207                                 new_item->stype = F_QUEUE;
1208                                 folder->queue = new_item;
1209                         } else if (!folder->trash && !strcasecmp(base, "Trash")) {
1210                                 new_item->stype = F_TRASH;
1211                                 folder->trash = new_item;
1212                         }
1213                 }
1214                 folder_item_append(item, new_item);
1215                 if (new_item->no_select == FALSE)
1216                         imap_scan_folder(folder, new_item);
1217                 if (new_item->no_sub == FALSE)
1218                         imap_scan_tree_recursive(session, new_item);
1219         }
1220
1221         return IMAP_SUCCESS;
1222 }
1223
1224 static GSList *imap_parse_list(Folder *folder, IMAPSession *session,
1225                                const gchar *real_path, gchar *separator)
1226 {
1227         gchar buf[IMAPBUFSIZE];
1228         gchar flags[256];
1229         gchar separator_str[16];
1230         gchar *p;
1231         gchar *name;
1232         gchar *loc_name, *loc_path;
1233         GSList *item_list = NULL;
1234         GString *str;
1235         FolderItem *new_item;
1236
1237         debug_print("getting list of %s ...\n",
1238                     *real_path ? real_path : "\"\"");
1239
1240         str = g_string_new(NULL);
1241
1242         for (;;) {
1243                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1244                         log_warning(_("error occured while getting LIST.\n"));
1245                         break;
1246                 }
1247                 strretchomp(buf);
1248                 if (buf[0] != '*' || buf[1] != ' ') {
1249                         log_print("IMAP4< %s\n", buf);
1250                         break;
1251                 }
1252                 debug_print("IMAP4< %s\n", buf);
1253
1254                 g_string_assign(str, buf);
1255                 p = str->str + 2;
1256                 if (strncmp(p, "LIST ", 5) != 0) continue;
1257                 p += 5;
1258
1259                 if (*p != '(') continue;
1260                 p++;
1261                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1262                 if (!p) continue;
1263                 while (*p == ' ') p++;
1264
1265                 p = strchr_cpy(p, ' ', separator_str, sizeof(separator_str));
1266                 if (!p) continue;
1267                 extract_quote(separator_str, '"');
1268                 if (!strcmp(separator_str, "NIL"))
1269                         separator_str[0] = '\0';
1270                 if (separator)
1271                         *separator = separator_str[0];
1272
1273                 buf[0] = '\0';
1274                 while (*p == ' ') p++;
1275                 if (*p == '{' || *p == '"')
1276                         p = imap_parse_atom(SESSION(session)->sock, p,
1277                                             buf, sizeof(buf), str);
1278                 else
1279                         strncpy2(buf, p, sizeof(buf));
1280                 strtailchomp(buf, separator_str[0]);
1281                 if (buf[0] == '\0') continue;
1282                 if (!strcmp(buf, real_path)) continue;
1283
1284                 if (separator_str[0] != '\0')
1285                         subst_char(buf, separator_str[0], '/');
1286                 name = g_basename(buf);
1287                 if (name[0] == '.') continue;
1288
1289                 loc_name = imap_modified_utf7_to_locale(name);
1290                 loc_path = imap_modified_utf7_to_locale(buf);
1291                 new_item = folder_item_new(folder, loc_name, loc_path);
1292                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1293                         new_item->no_sub = TRUE;
1294                 if (strcmp(buf, "INBOX") != 0 &&
1295                     strcasestr(flags, "\\Noselect") != NULL)
1296                         new_item->no_select = TRUE;
1297
1298                 item_list = g_slist_append(item_list, new_item);
1299
1300                 debug_print("folder %s has been added.\n", loc_path);
1301                 g_free(loc_path);
1302                 g_free(loc_name);
1303         }
1304
1305         g_string_free(str, TRUE);
1306
1307         return item_list;
1308 }
1309
1310 gint imap_create_tree(Folder *folder)
1311 {
1312         g_return_val_if_fail(folder != NULL, -1);
1313         g_return_val_if_fail(folder->node != NULL, -1);
1314         g_return_val_if_fail(folder->node->data != NULL, -1);
1315         g_return_val_if_fail(folder->account != NULL, -1);
1316
1317         imap_scan_tree(folder);
1318         imap_create_missing_folders(folder);
1319
1320         return 0;
1321 }
1322
1323 static void imap_create_missing_folders(Folder *folder)
1324 {
1325         g_return_if_fail(folder != NULL);
1326
1327         if (!folder->inbox)
1328                 folder->inbox = imap_create_special_folder
1329                         (folder, F_INBOX, "INBOX");
1330 #if 0
1331         if (!folder->outbox)
1332                 folder->outbox = imap_create_special_folder
1333                         (folder, F_OUTBOX, "Sent");
1334         if (!folder->draft)
1335                 folder->draft = imap_create_special_folder
1336                         (folder, F_DRAFT, "Drafts");
1337         if (!folder->queue)
1338                 folder->queue = imap_create_special_folder
1339                         (folder, F_QUEUE, "Queue");
1340 #endif
1341         if (!folder->trash)
1342                 folder->trash = imap_create_special_folder
1343                         (folder, F_TRASH, "Trash");
1344 }
1345
1346 static FolderItem *imap_create_special_folder(Folder *folder,
1347                                               SpecialFolderItemType stype,
1348                                               const gchar *name)
1349 {
1350         FolderItem *item;
1351         FolderItem *new_item;
1352
1353         g_return_val_if_fail(folder != NULL, NULL);
1354         g_return_val_if_fail(folder->node != NULL, NULL);
1355         g_return_val_if_fail(folder->node->data != NULL, NULL);
1356         g_return_val_if_fail(folder->account != NULL, NULL);
1357         g_return_val_if_fail(name != NULL, NULL);
1358
1359         item = FOLDER_ITEM(folder->node->data);
1360         new_item = imap_create_folder(folder, item, name);
1361
1362         if (!new_item) {
1363                 g_warning("Can't create '%s'\n", name);
1364                 if (!folder->inbox) return NULL;
1365
1366                 new_item = imap_create_folder(folder, folder->inbox, name);
1367                 if (!new_item)
1368                         g_warning("Can't create '%s' under INBOX\n", name);
1369                 else
1370                         new_item->stype = stype;
1371         } else
1372                 new_item->stype = stype;
1373
1374         return new_item;
1375 }
1376
1377 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1378                                const gchar *name)
1379 {
1380         gchar *dirpath, *imap_path;
1381         IMAPSession *session;
1382         FolderItem *new_item;
1383         gchar separator;
1384         gchar *new_name;
1385         const gchar *p;
1386         gint ok;
1387
1388         g_return_val_if_fail(folder != NULL, NULL);
1389         g_return_val_if_fail(folder->account != NULL, NULL);
1390         g_return_val_if_fail(parent != NULL, NULL);
1391         g_return_val_if_fail(name != NULL, NULL);
1392
1393         session = imap_session_get(folder);
1394         if (!session) return NULL;
1395
1396         if (!parent->parent && strcmp(name, "INBOX") == 0)
1397                 dirpath = g_strdup(name);
1398         else if (parent->path)
1399                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1400         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1401                 dirpath = g_strdup(name);
1402         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1403                 gchar *imap_dir;
1404
1405                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1406                 strtailchomp(imap_dir, '/');
1407                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1408         } else
1409                 dirpath = g_strdup(name);
1410
1411         /* keep trailing directory separator to create a folder that contains
1412            sub folder */
1413         imap_path = imap_locale_to_modified_utf7(dirpath);
1414         strtailchomp(dirpath, '/');
1415         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1416         strtailchomp(new_name, '/');
1417         separator = imap_get_path_separator(IMAP_FOLDER(folder), imap_path);
1418         imap_path_separator_subst(imap_path, separator);
1419         subst_char(new_name, '/', separator);
1420
1421         if (strcmp(name, "INBOX") != 0) {
1422                 GPtrArray *argbuf;
1423                 gint i;
1424                 gboolean exist = FALSE;
1425
1426                 argbuf = g_ptr_array_new();
1427                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imap_path,
1428                                    argbuf);
1429                 if (ok != IMAP_SUCCESS) {
1430                         log_warning(_("can't create mailbox: LIST failed\n"));
1431                         g_free(imap_path);
1432                         g_free(dirpath);
1433                         ptr_array_free_strings(argbuf);
1434                         g_ptr_array_free(argbuf, TRUE);
1435                         return NULL;
1436                 }
1437
1438                 for (i = 0; i < argbuf->len; i++) {
1439                         gchar *str;
1440                         str = g_ptr_array_index(argbuf, i);
1441                         if (!strncmp(str, "LIST ", 5)) {
1442                                 exist = TRUE;
1443                                 break;
1444                         }
1445                 }
1446                 ptr_array_free_strings(argbuf);
1447                 g_ptr_array_free(argbuf, TRUE);
1448
1449                 if (!exist) {
1450                         ok = imap_cmd_create(SESSION(session)->sock, imap_path);
1451                         if (ok != IMAP_SUCCESS) {
1452                                 log_warning(_("can't create mailbox\n"));
1453                                 g_free(imap_path);
1454                                 g_free(dirpath);
1455                                 return NULL;
1456                         }
1457                 }
1458         }
1459
1460         new_item = folder_item_new(folder, new_name, dirpath);
1461         folder_item_append(parent, new_item);
1462         g_free(imap_path);
1463         g_free(dirpath);
1464
1465         dirpath = folder_item_get_path(new_item);
1466         if (!is_dir_exist(dirpath))
1467                 make_dir_hier(dirpath);
1468         g_free(dirpath);
1469
1470         return new_item;
1471 }
1472
1473 gint imap_rename_folder(Folder *folder, FolderItem *item, const gchar *name)
1474 {
1475         gchar *dirpath;
1476         gchar *newpath;
1477         gchar *real_oldpath;
1478         gchar *real_newpath;
1479         GNode *node;
1480         gchar *paths[2];
1481         gchar *old_cache_dir;
1482         gchar *new_cache_dir;
1483         IMAPSession *session;
1484         gchar separator;
1485         gint ok;
1486         gint exists, recent, unseen;
1487         guint32 uid_validity;
1488
1489         g_return_val_if_fail(folder != NULL, -1);
1490         g_return_val_if_fail(item != NULL, -1);
1491         g_return_val_if_fail(item->path != NULL, -1);
1492         g_return_val_if_fail(name != NULL, -1);
1493
1494         session = imap_session_get(folder);
1495         if (!session) return -1;
1496
1497         real_oldpath = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1498
1499         g_free(session->mbox);
1500         session->mbox = NULL;
1501         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1502                               &exists, &recent, &unseen, &uid_validity);
1503         if (ok != IMAP_SUCCESS) {
1504                 g_free(real_oldpath);
1505                 return -1;
1506         }
1507
1508         separator = imap_get_path_separator(IMAP_FOLDER(folder), item->path);
1509         if (strchr(item->path, G_DIR_SEPARATOR)) {
1510                 dirpath = g_dirname(item->path);
1511                 newpath = g_strconcat(dirpath, G_DIR_SEPARATOR_S, name, NULL);
1512                 g_free(dirpath);
1513         } else
1514                 newpath = g_strdup(name);
1515
1516         real_newpath = imap_locale_to_modified_utf7(newpath);
1517         imap_path_separator_subst(real_newpath, separator);
1518
1519         ok = imap_cmd_rename(SESSION(session)->sock, real_oldpath, real_newpath);
1520         if (ok != IMAP_SUCCESS) {
1521                 log_warning(_("can't rename mailbox: %s to %s\n"),
1522                             real_oldpath, real_newpath);
1523                 g_free(real_oldpath);
1524                 g_free(newpath);
1525                 g_free(real_newpath);
1526                 return -1;
1527         }
1528
1529         g_free(item->name);
1530         item->name = g_strdup(name);
1531
1532         old_cache_dir = folder_item_get_path(item);
1533
1534         node = g_node_find(item->folder->node, G_PRE_ORDER, G_TRAVERSE_ALL,
1535                            item);
1536         paths[0] = g_strdup(item->path);
1537         paths[1] = newpath;
1538         g_node_traverse(node, G_PRE_ORDER, G_TRAVERSE_ALL, -1,
1539                         imap_rename_folder_func, paths);
1540
1541         if (is_dir_exist(old_cache_dir)) {
1542                 new_cache_dir = folder_item_get_path(item);
1543                 if (rename(old_cache_dir, new_cache_dir) < 0) {
1544                         FILE_OP_ERROR(old_cache_dir, "rename");
1545                 }
1546                 g_free(new_cache_dir);
1547         }
1548
1549         g_free(old_cache_dir);
1550         g_free(paths[0]);
1551         g_free(newpath);
1552         g_free(real_oldpath);
1553         g_free(real_newpath);
1554
1555         return 0;
1556 }
1557
1558 gint imap_remove_folder(Folder *folder, FolderItem *item)
1559 {
1560         gint ok;
1561         IMAPSession *session;
1562         gchar *path;
1563         gchar *cache_dir;
1564         gint exists, recent, unseen;
1565         guint32 uid_validity;
1566
1567         g_return_val_if_fail(folder != NULL, -1);
1568         g_return_val_if_fail(item != NULL, -1);
1569         g_return_val_if_fail(item->path != NULL, -1);
1570
1571         session = imap_session_get(folder);
1572         if (!session) return -1;
1573
1574         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1575
1576         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1577                               &exists, &recent, &unseen, &uid_validity);
1578         if (ok != IMAP_SUCCESS) {
1579                 g_free(path);
1580                 return -1;
1581         }
1582
1583         ok = imap_cmd_delete(SESSION(session)->sock, path);
1584         if (ok != IMAP_SUCCESS) {
1585                 log_warning(_("can't delete mailbox\n"));
1586                 g_free(path);
1587                 return -1;
1588         }
1589
1590         g_free(path);
1591         cache_dir = folder_item_get_path(item);
1592         if (is_dir_exist(cache_dir) && remove_dir_recursive(cache_dir) < 0)
1593                 g_warning("can't remove directory '%s'\n", cache_dir);
1594         g_free(cache_dir);
1595         folder_item_remove(item);
1596
1597         return 0;
1598 }
1599
1600 static GSList *imap_get_uncached_messages(IMAPSession *session,
1601                                           FolderItem *item,
1602                                           guint32 first_uid, guint32 last_uid)
1603 {
1604         gchar *tmp;
1605         GSList *newlist = NULL;
1606         GSList *llast = NULL;
1607         GString *str;
1608         MsgInfo *msginfo;
1609
1610         g_return_val_if_fail(session != NULL, NULL);
1611         g_return_val_if_fail(item != NULL, NULL);
1612         g_return_val_if_fail(item->folder != NULL, NULL);
1613         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &imap_class, NULL);
1614         g_return_val_if_fail(first_uid <= last_uid, NULL);
1615
1616         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1617             != IMAP_SUCCESS) {
1618                 log_warning(_("can't get envelope\n"));
1619                 return NULL;
1620         }
1621
1622         str = g_string_new(NULL);
1623
1624         for (;;) {
1625                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1626                         log_warning(_("error occurred while getting envelope.\n"));
1627                         g_string_free(str, TRUE);
1628                         return newlist;
1629                 }
1630                 strretchomp(tmp);
1631                 if (tmp[0] != '*' || tmp[1] != ' ') {
1632                         log_print("IMAP4< %s\n", tmp);
1633                         g_free(tmp);
1634                         break;
1635                 }
1636                 if (strstr(tmp, "FETCH") == NULL) {
1637                         log_print("IMAP4< %s\n", tmp);
1638                         g_free(tmp);
1639                         continue;
1640                 }
1641                 log_print("IMAP4< %s\n", tmp);
1642                 g_string_assign(str, tmp);
1643                 g_free(tmp);
1644
1645                 msginfo = imap_parse_envelope
1646                         (SESSION(session)->sock, item, str);
1647                 if (!msginfo) {
1648                         log_warning(_("can't parse envelope: %s\n"), str->str);
1649                         continue;
1650                 }
1651                 if (item->stype == F_QUEUE) {
1652                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_QUEUED);
1653                 } else if (item->stype == F_DRAFT) {
1654                         MSG_SET_TMP_FLAGS(msginfo->flags, MSG_DRAFT);
1655                 }
1656
1657                 msginfo->folder = item;
1658
1659                 if (!newlist)
1660                         llast = newlist = g_slist_append(newlist, msginfo);
1661                 else {
1662                         llast = g_slist_append(llast, msginfo);
1663                         llast = llast->next;
1664                 }
1665         }
1666
1667         g_string_free(str, TRUE);
1668
1669         return newlist;
1670 }
1671
1672 static void imap_delete_all_cached_messages(FolderItem *item)
1673 {
1674         gchar *dir;
1675
1676         g_return_if_fail(item != NULL);
1677         g_return_if_fail(item->folder != NULL);
1678         g_return_if_fail(FOLDER_CLASS(item->folder) == &imap_class);
1679
1680         debug_print("Deleting all cached messages...\n");
1681
1682         dir = folder_item_get_path(item);
1683         if (is_dir_exist(dir))
1684                 remove_all_numbered_files(dir);
1685         g_free(dir);
1686
1687         debug_print("done.\n");
1688 }
1689
1690 #if USE_OPENSSL
1691 static SockInfo *imap_open_tunnel(const gchar *server,
1692                            const gchar *tunnelcmd,
1693                            SSLType ssl_type)
1694 #else
1695 static SockInfo *imap_open_tunnel(const gchar *server,
1696                            const gchar *tunnelcmd)
1697 #endif
1698 {
1699         SockInfo *sock;
1700
1701         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1702                 log_warning(_("Can't establish IMAP4 session with: %s\n"),
1703                             server);
1704                 return NULL;
1705 #if USE_OPENSSL
1706         return imap_init_sock(sock, ssl_type);
1707 #else
1708         return imap_init_sock(sock);
1709 #endif
1710 }
1711
1712
1713 #if USE_OPENSSL
1714 static SockInfo *imap_open(const gchar *server, gushort port,
1715                            SSLType ssl_type)
1716 #else
1717 static SockInfo *imap_open(const gchar *server, gushort port)
1718 #endif
1719 {
1720         SockInfo *sock;
1721
1722         if ((sock = sock_connect(server, port)) == NULL) {
1723                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1724                             server, port);
1725                 return NULL;
1726         }
1727
1728 #if USE_OPENSSL
1729         if (ssl_type == SSL_TUNNEL && !ssl_init_socket(sock)) {
1730                 log_warning(_("Can't establish IMAP4 session with: %s:%d\n"),
1731                             server, port);
1732                 sock_close(sock);
1733                 return NULL;
1734         }
1735         return imap_init_sock(sock, ssl_type);
1736 #else
1737         return imap_init_sock(sock);
1738 #endif
1739 }
1740
1741 #if USE_OPENSSL
1742 static SockInfo *imap_init_sock(SockInfo *sock, SSLType ssl_type)
1743 #else
1744 static SockInfo *imap_init_sock(SockInfo *sock)
1745 #endif
1746 {
1747         imap_cmd_count = 0;
1748 #if USE_OPENSSL
1749         if (ssl_type == SSL_STARTTLS) {
1750                 gint ok;
1751
1752                 ok = imap_cmd_starttls(sock);
1753                 if (ok != IMAP_SUCCESS) {
1754                         log_warning(_("Can't start TLS session.\n"));
1755                         sock_close(sock);
1756                         return NULL;
1757                 }
1758                 if (!ssl_init_socket_with_method(sock, SSL_METHOD_TLSv1)) {
1759                         sock_close(sock);
1760                         return NULL;
1761                 }
1762         }
1763 #endif
1764
1765         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1766                 log_warning(_("Can't establish IMAP4 session.\n"));
1767                 sock_close(sock);
1768                 return NULL;
1769         }
1770
1771         return sock;
1772 }
1773
1774 static GList *imap_parse_namespace_str(gchar *str)
1775 {
1776         gchar *p = str;
1777         gchar *name;
1778         gchar *separator;
1779         IMAPNameSpace *namespace;
1780         GList *ns_list = NULL;
1781
1782         while (*p != '\0') {
1783                 /* parse ("#foo" "/") */
1784
1785                 while (*p && *p != '(') p++;
1786                 if (*p == '\0') break;
1787                 p++;
1788
1789                 while (*p && *p != '"') p++;
1790                 if (*p == '\0') break;
1791                 p++;
1792                 name = p;
1793
1794                 while (*p && *p != '"') p++;
1795                 if (*p == '\0') break;
1796                 *p = '\0';
1797                 p++;
1798
1799                 while (*p && isspace(*p)) p++;
1800                 if (*p == '\0') break;
1801                 if (strncmp(p, "NIL", 3) == 0)
1802                         separator = NULL;
1803                 else if (*p == '"') {
1804                         p++;
1805                         separator = p;
1806                         while (*p && *p != '"') p++;
1807                         if (*p == '\0') break;
1808                         *p = '\0';
1809                         p++;
1810                 } else break;
1811
1812                 while (*p && *p != ')') p++;
1813                 if (*p == '\0') break;
1814                 p++;
1815
1816                 namespace = g_new(IMAPNameSpace, 1);
1817                 namespace->name = g_strdup(name);
1818                 namespace->separator = separator ? separator[0] : '\0';
1819                 ns_list = g_list_append(ns_list, namespace);
1820         }
1821
1822         return ns_list;
1823 }
1824
1825 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1826 {
1827         gchar *ns_str;
1828         gchar **str_array;
1829
1830         g_return_if_fail(session != NULL);
1831         g_return_if_fail(folder != NULL);
1832
1833         if (folder->ns_personal != NULL ||
1834             folder->ns_others   != NULL ||
1835             folder->ns_shared   != NULL)
1836                 return;
1837
1838         if (!imap_has_capability(session, "NAMESPACE")) {
1839                 imap_get_namespace_by_list(session, folder);
1840                 return;
1841         }
1842
1843         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1844             != IMAP_SUCCESS) {
1845                 log_warning(_("can't get namespace\n"));
1846                 return;
1847         }
1848
1849         str_array = strsplit_parenthesis(ns_str, '(', ')', 3);
1850         if (str_array == NULL) {
1851                 g_free(ns_str);
1852                 imap_get_namespace_by_list(session, folder);
1853                 return;
1854         }
1855         if (str_array[0])
1856                 folder->ns_personal = imap_parse_namespace_str(str_array[0]);
1857         if (str_array[0] && str_array[1])
1858                 folder->ns_others = imap_parse_namespace_str(str_array[1]);
1859         if (str_array[0] && str_array[1] && str_array[2])
1860                 folder->ns_shared = imap_parse_namespace_str(str_array[2]);
1861         g_strfreev(str_array);
1862         g_free(ns_str);
1863 }
1864
1865 static void imap_get_namespace_by_list(IMAPSession *session, IMAPFolder *folder)
1866 {
1867         GSList *item_list, *cur;
1868         gchar separator = '\0';
1869         IMAPNameSpace *namespace;
1870
1871         g_return_if_fail(session != NULL);
1872         g_return_if_fail(folder != NULL);
1873
1874         if (folder->ns_personal != NULL ||
1875             folder->ns_others   != NULL ||
1876             folder->ns_shared   != NULL)
1877                 return;
1878
1879         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" \"\"");
1880         item_list = imap_parse_list(NULL, session, "", &separator);
1881         for (cur = item_list; cur != NULL; cur = cur->next)
1882                 folder_item_destroy(FOLDER_ITEM(cur->data));
1883         g_slist_free(item_list);
1884
1885         namespace = g_new(IMAPNameSpace, 1);
1886         namespace->name = g_strdup("");
1887         namespace->separator = separator;
1888         folder->ns_personal = g_list_append(NULL, namespace);
1889 }
1890
1891 static IMAPNameSpace *imap_find_namespace_from_list(GList *ns_list,
1892                                                     const gchar *path)
1893 {
1894         IMAPNameSpace *namespace = NULL;
1895         gchar *tmp_path, *name;
1896
1897         if (!path) path = "";
1898
1899         Xstrcat_a(tmp_path, path, "/", return NULL);
1900
1901         for (; ns_list != NULL; ns_list = ns_list->next) {
1902                 IMAPNameSpace *tmp_ns = ns_list->data;
1903
1904                 Xstrdup_a(name, tmp_ns->name, return namespace);
1905                 if (tmp_ns->separator && tmp_ns->separator != '/')
1906                         subst_char(name, tmp_ns->separator, '/');
1907                 if (strncmp(tmp_path, name, strlen(name)) == 0)
1908                         namespace = tmp_ns;
1909         }
1910
1911         return namespace;
1912 }
1913
1914 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1915                                           const gchar *path)
1916 {
1917         IMAPNameSpace *namespace;
1918
1919         g_return_val_if_fail(folder != NULL, NULL);
1920
1921         namespace = imap_find_namespace_from_list(folder->ns_personal, path);
1922         if (namespace) return namespace;
1923         namespace = imap_find_namespace_from_list(folder->ns_others, path);
1924         if (namespace) return namespace;
1925         namespace = imap_find_namespace_from_list(folder->ns_shared, path);
1926         if (namespace) return namespace;
1927
1928         return NULL;
1929 }
1930
1931 static gchar imap_get_path_separator(IMAPFolder *folder, const gchar *path)
1932 {
1933         IMAPNameSpace *namespace;
1934         gchar separator = '/';
1935
1936         namespace = imap_find_namespace(folder, path);
1937         if (namespace && namespace->separator)
1938                 separator = namespace->separator;
1939
1940         return separator;
1941 }
1942
1943 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1944 {
1945         gchar *real_path;
1946         gchar separator;
1947
1948         g_return_val_if_fail(folder != NULL, NULL);
1949         g_return_val_if_fail(path != NULL, NULL);
1950
1951         real_path = imap_locale_to_modified_utf7(path);
1952         separator = imap_get_path_separator(folder, path);
1953         imap_path_separator_subst(real_path, separator);
1954
1955         return real_path;
1956 }
1957
1958 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1959                               gchar *dest, gint dest_len, GString *str)
1960 {
1961         gchar *cur_pos = src;
1962         gchar *nextline;
1963
1964         g_return_val_if_fail(str != NULL, cur_pos);
1965
1966         /* read the next line if the current response buffer is empty */
1967         while (isspace(*cur_pos)) cur_pos++;
1968         while (*cur_pos == '\0') {
1969                 if ((nextline = sock_getline(sock)) == NULL)
1970                         return cur_pos;
1971                 g_string_assign(str, nextline);
1972                 cur_pos = str->str;
1973                 strretchomp(nextline);
1974                 /* log_print("IMAP4< %s\n", nextline); */
1975                 debug_print("IMAP4< %s\n", nextline);
1976                 g_free(nextline);
1977
1978                 while (isspace(*cur_pos)) cur_pos++;
1979         }
1980
1981         if (!strncmp(cur_pos, "NIL", 3)) {
1982                 *dest = '\0';
1983                 cur_pos += 3;
1984         } else if (*cur_pos == '\"') {
1985                 gchar *p;
1986
1987                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1988                 cur_pos = p ? p : cur_pos + 2;
1989         } else if (*cur_pos == '{') {
1990                 gchar buf[32];
1991                 gint len;
1992                 gint line_len = 0;
1993
1994                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1995                 len = atoi(buf);
1996
1997                 g_string_truncate(str, 0);
1998                 cur_pos = str->str;
1999
2000                 do {
2001                         if ((nextline = sock_getline(sock)) == NULL)
2002                                 return cur_pos;
2003                         line_len += strlen(nextline);
2004                         g_string_append(str, nextline);
2005                         cur_pos = str->str;
2006                         strretchomp(nextline);
2007                         /* log_print("IMAP4< %s\n", nextline); */
2008                         debug_print("IMAP4< %s\n", nextline);
2009                         g_free(nextline);
2010                 } while (line_len < len);
2011
2012                 memcpy(dest, cur_pos, MIN(len, dest_len - 1));
2013                 dest[MIN(len, dest_len - 1)] = '\0';
2014                 cur_pos += len;
2015         }
2016
2017         return cur_pos;
2018 }
2019
2020 static gchar *imap_get_header(SockInfo *sock, gchar *cur_pos, gchar **headers,
2021                               GString *str)
2022 {
2023         gchar *nextline;
2024         gchar buf[32];
2025         gint len;
2026         gint block_len = 0;
2027
2028         *headers = NULL;
2029
2030         g_return_val_if_fail(str != NULL, cur_pos);
2031
2032         while (isspace(*cur_pos)) cur_pos++;
2033
2034         g_return_val_if_fail(*cur_pos == '{', cur_pos);
2035
2036         cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
2037         len = atoi(buf);
2038
2039         g_string_truncate(str, 0);
2040         cur_pos = str->str;
2041
2042         do {
2043                 if ((nextline = sock_getline(sock)) == NULL)
2044                         return cur_pos;
2045                 block_len += strlen(nextline);
2046                 g_string_append(str, nextline);
2047                 cur_pos = str->str;
2048                 strretchomp(nextline);
2049                 /* debug_print("IMAP4< %s\n", nextline); */
2050                 g_free(nextline);
2051         } while (block_len < len);
2052
2053         debug_print("IMAP4< [contents of BODY.PEEK[HEADER.FIELDS (...)]]\n");
2054
2055         *headers = g_strndup(cur_pos, len);
2056         cur_pos += len;
2057
2058         while (isspace(*cur_pos)) cur_pos++;
2059         while (*cur_pos == '\0') {
2060                 if ((nextline = sock_getline(sock)) == NULL)
2061                         return cur_pos;
2062                 g_string_assign(str, nextline);
2063                 cur_pos = str->str;
2064                 strretchomp(nextline);
2065                 debug_print("IMAP4< %s\n", nextline);
2066                 g_free(nextline);
2067
2068                 while (isspace(*cur_pos)) cur_pos++;
2069         }
2070
2071         return cur_pos;
2072 }
2073
2074 static MsgFlags imap_parse_flags(const gchar *flag_str)
2075 {
2076         const gchar *p = flag_str;
2077         MsgFlags flags = {0, 0};
2078
2079         flags.perm_flags = MSG_UNREAD;
2080
2081         while ((p = strchr(p, '\\')) != NULL) {
2082                 p++;
2083
2084                 if (g_strncasecmp(p, "Recent", 6) == 0 && MSG_IS_UNREAD(flags)) {
2085                         MSG_SET_PERM_FLAGS(flags, MSG_NEW);
2086                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
2087                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
2088                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
2089                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
2090                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
2091                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
2092                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
2093                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
2094                 }
2095         }
2096
2097         return flags;
2098 }
2099
2100 static MsgInfo *imap_parse_envelope(SockInfo *sock, FolderItem *item,
2101                                     GString *line_str)
2102 {
2103         gchar buf[IMAPBUFSIZE];
2104         MsgInfo *msginfo = NULL;
2105         gchar *cur_pos;
2106         gint msgnum;
2107         guint32 uid = 0;
2108         size_t size = 0;
2109         MsgFlags flags = {0, 0}, imap_flags = {0, 0};
2110
2111         g_return_val_if_fail(line_str != NULL, NULL);
2112         g_return_val_if_fail(line_str->str[0] == '*' &&
2113                              line_str->str[1] == ' ', NULL);
2114
2115         MSG_SET_TMP_FLAGS(flags, MSG_IMAP);
2116         if (item->stype == F_QUEUE) {
2117                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
2118         } else if (item->stype == F_DRAFT) {
2119                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
2120         }
2121
2122         cur_pos = line_str->str + 2;
2123
2124 #define PARSE_ONE_ELEMENT(ch)                                   \
2125 {                                                               \
2126         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf));    \
2127         if (cur_pos == NULL) {                                  \
2128                 g_warning("cur_pos == NULL\n");                 \
2129                 procmsg_msginfo_free(msginfo);                  \
2130                 return NULL;                                    \
2131         }                                                       \
2132 }
2133
2134         PARSE_ONE_ELEMENT(' ');
2135         msgnum = atoi(buf);
2136
2137         PARSE_ONE_ELEMENT(' ');
2138         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
2139
2140         g_return_val_if_fail(*cur_pos == '(', NULL);
2141         cur_pos++;
2142
2143         while (*cur_pos != '\0' && *cur_pos != ')') {
2144                 while (*cur_pos == ' ') cur_pos++;
2145
2146                 if (!strncmp(cur_pos, "UID ", 4)) {
2147                         cur_pos += 4;
2148                         uid = strtoul(cur_pos, &cur_pos, 10);
2149                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
2150                         cur_pos += 6;
2151                         if (*cur_pos != '(') {
2152                                 g_warning("*cur_pos != '('\n");
2153                                 procmsg_msginfo_free(msginfo);
2154                                 return NULL;
2155                         }
2156                         cur_pos++;
2157                         PARSE_ONE_ELEMENT(')');
2158                         imap_flags = imap_parse_flags(buf);
2159                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
2160                         cur_pos += 12;
2161                         size = strtol(cur_pos, &cur_pos, 10);
2162                 } else if (!strncmp(cur_pos, "BODY[HEADER.FIELDS ", 19)) {
2163                         gchar *headers;
2164
2165                         cur_pos += 19;
2166                         if (*cur_pos != '(') {
2167                                 g_warning("*cur_pos != '('\n");
2168                                 procmsg_msginfo_free(msginfo);
2169                                 return NULL;
2170                         }
2171                         cur_pos++;
2172                         PARSE_ONE_ELEMENT(')');
2173                         if (*cur_pos != ']') {
2174                                 g_warning("*cur_pos != ']'\n");
2175                                 procmsg_msginfo_free(msginfo);
2176                                 return NULL;
2177                         }
2178                         cur_pos++;
2179
2180                         cur_pos = imap_get_header(sock, cur_pos, &headers,
2181                                                   line_str);
2182                         msginfo = procheader_parse_str(headers, flags, FALSE, FALSE);
2183                         g_free(headers);
2184                 } else {
2185                         g_warning("invalid FETCH response: %s\n", cur_pos);
2186                         break;
2187                 }
2188         }
2189
2190         if (msginfo) {
2191                 msginfo->msgnum = uid;
2192                 msginfo->size = size;
2193                 msginfo->flags.tmp_flags |= imap_flags.tmp_flags;
2194                 msginfo->flags.perm_flags = imap_flags.perm_flags;
2195         }
2196
2197         return msginfo;
2198 }
2199
2200 gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2201 {
2202         Folder *folder;
2203         IMAPSession *session;
2204         IMAPFlags iflags = 0;
2205         gint ok = IMAP_SUCCESS;
2206
2207         g_return_val_if_fail(msginfo != NULL, -1);
2208         g_return_val_if_fail(msginfo->folder != NULL, -1);
2209         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2210
2211         folder = msginfo->folder->folder;
2212         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
2213
2214         session = imap_session_get(folder);
2215         if (!session) return -1;
2216
2217         if ((ok = imap_select(session, IMAP_FOLDER(folder), msginfo->folder->path,
2218             NULL, NULL, NULL, NULL)) != IMAP_SUCCESS)
2219                 return ok;
2220
2221         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2222         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2223         if (iflags) {
2224                 ok = imap_set_message_flags(session, msginfo->msgnum,
2225                                             msginfo->msgnum, iflags, TRUE);
2226                 if (ok != IMAP_SUCCESS) return ok;
2227         }
2228
2229         if (flags & MSG_UNREAD)
2230                 ok = imap_set_message_flags(session, msginfo->msgnum,
2231                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2232                                             FALSE);
2233         return ok;
2234 }
2235
2236 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
2237 {
2238         Folder *folder;
2239         IMAPSession *session;
2240         IMAPFlags iflags = 0;
2241         gint ok = IMAP_SUCCESS;
2242
2243         g_return_val_if_fail(msginfo != NULL, -1);
2244         g_return_val_if_fail(msginfo->folder != NULL, -1);
2245         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
2246
2247         folder = msginfo->folder->folder;
2248         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
2249
2250         session = imap_session_get(folder);
2251         if (!session) return -1;
2252
2253         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2254         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2255         if (iflags) {
2256                 ok = imap_set_message_flags(session, msginfo->msgnum,
2257                                             msginfo->msgnum, iflags, FALSE);
2258                 if (ok != IMAP_SUCCESS) return ok;
2259         }
2260
2261         if (flags & MSG_UNREAD)
2262                 ok = imap_set_message_flags(session, msginfo->msgnum,
2263                                             msginfo->msgnum, IMAP_FLAG_SEEN,
2264                                             TRUE);
2265         return ok;
2266 }
2267
2268 static gint imap_set_message_flags(IMAPSession *session,
2269                                    guint32 first_uid,
2270                                    guint32 last_uid,
2271                                    IMAPFlags flags,
2272                                    gboolean is_set)
2273 {
2274         GString *buf;
2275         gint ok;
2276
2277         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
2278
2279         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
2280         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
2281         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
2282         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
2283         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
2284
2285         if (buf->str[buf->len - 1] == ' ')
2286                 g_string_truncate(buf, buf->len - 1);
2287
2288         g_string_append_c(buf, ')');
2289
2290         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
2291                             buf->str);
2292         g_string_free(buf, TRUE);
2293
2294         return ok;
2295 }
2296
2297 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
2298                         const gchar *path,
2299                         gint *exists, gint *recent, gint *unseen,
2300                         guint32 *uid_validity)
2301 {
2302         gchar *real_path;
2303         gint ok;
2304         gint exists_, recent_, unseen_, uid_validity_;
2305
2306         if (!exists || !recent || !unseen || !uid_validity) {
2307                 if (session->mbox && strcmp(session->mbox, path) == 0)
2308                         return IMAP_SUCCESS;
2309                 exists = &exists_;
2310                 recent = &recent_;
2311                 unseen = &unseen_;
2312                 uid_validity = &uid_validity_;
2313         }
2314
2315         g_free(session->mbox);
2316         session->mbox = NULL;
2317
2318         real_path = imap_get_real_path(folder, path);
2319         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2320                              exists, recent, unseen, uid_validity);
2321         if (ok != IMAP_SUCCESS)
2322                 log_warning(_("can't select folder: %s\n"), real_path);
2323         else
2324                 session->mbox = g_strdup(path);
2325         g_free(real_path);
2326
2327         return ok;
2328 }
2329
2330 #define THROW(err) { ok = err; goto catch; }
2331
2332 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2333                         const gchar *path,
2334                         gint *messages, gint *recent,
2335                         guint32 *uid_next, guint32 *uid_validity,
2336                         gint *unseen)
2337 {
2338         gchar *real_path;
2339         gchar *real_path_;
2340         gint ok;
2341         GPtrArray *argbuf;
2342         gchar *str;
2343
2344         *messages = *recent = *uid_next = *uid_validity = *unseen = 0;
2345
2346         argbuf = g_ptr_array_new();
2347
2348         real_path = imap_get_real_path(folder, path);
2349         QUOTE_IF_REQUIRED(real_path_, real_path);
2350         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2351                           "(MESSAGES RECENT UIDNEXT UIDVALIDITY UNSEEN)",
2352                           real_path_);
2353
2354         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2355         if (ok != IMAP_SUCCESS) THROW(ok);
2356
2357         str = search_array_str(argbuf, "STATUS");
2358         if (!str) THROW(IMAP_ERROR);
2359
2360         str = strchr(str, '(');
2361         if (!str) THROW(IMAP_ERROR);
2362         str++;
2363         while (*str != '\0' && *str != ')') {
2364                 while (*str == ' ') str++;
2365
2366                 if (!strncmp(str, "MESSAGES ", 9)) {
2367                         str += 9;
2368                         *messages = strtol(str, &str, 10);
2369                 } else if (!strncmp(str, "RECENT ", 7)) {
2370                         str += 7;
2371                         *recent = strtol(str, &str, 10);
2372                 } else if (!strncmp(str, "UIDNEXT ", 8)) {
2373                         str += 8;
2374                         *uid_next = strtoul(str, &str, 10);
2375                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2376                         str += 12;
2377                         *uid_validity = strtoul(str, &str, 10);
2378                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2379                         str += 7;
2380                         *unseen = strtol(str, &str, 10);
2381                 } else {
2382                         g_warning("invalid STATUS response: %s\n", str);
2383                         break;
2384                 }
2385         }
2386
2387 catch:
2388         g_free(real_path);
2389         ptr_array_free_strings(argbuf);
2390         g_ptr_array_free(argbuf, TRUE);
2391
2392         return ok;
2393 }
2394
2395 #undef THROW
2396
2397
2398 /* low-level IMAP4rev1 commands */
2399
2400 static gint imap_cmd_login(SockInfo *sock,
2401                            const gchar *user, const gchar *pass)
2402 {
2403         gchar *user_, *pass_;
2404         gint ok;
2405
2406         QUOTE_IF_REQUIRED(user_, user);
2407         QUOTE_IF_REQUIRED(pass_, pass);
2408         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2409
2410         ok = imap_cmd_ok(sock, NULL);
2411         if (ok != IMAP_SUCCESS)
2412                 log_warning(_("IMAP4 login failed.\n"));
2413
2414         return ok;
2415 }
2416
2417 static gint imap_cmd_logout(SockInfo *sock)
2418 {
2419         imap_cmd_gen_send(sock, "LOGOUT");
2420         return imap_cmd_ok(sock, NULL);
2421 }
2422
2423 /* Send a NOOP, and examine the server's response to see whether this
2424  * connection is pre-authenticated or not. */
2425 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2426 {
2427         GPtrArray *argbuf;
2428         gint r;
2429
2430         imap_cmd_gen_send(sock, "NOOP");
2431         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2432         r = imap_cmd_ok(sock, argbuf);
2433         *is_preauth = search_array_str(argbuf, "PREAUTH") != NULL;
2434
2435         ptr_array_free_strings(argbuf);
2436         g_ptr_array_free(argbuf, TRUE);
2437
2438         return r;
2439 }
2440
2441 static void imap_get_capability(Session *session)
2442 {
2443         gchar *capstr;
2444         GPtrArray *argbuf;
2445
2446         if (IMAP_SESSION(session)->capability != NULL)
2447                 return;
2448
2449         imap_cmd_gen_send(session->sock, "CAPABILITY");
2450
2451         argbuf = g_ptr_array_new();
2452
2453         if (imap_cmd_ok(session->sock, argbuf) != IMAP_SUCCESS ||
2454             ((capstr = search_array_str(argbuf, "CAPABILITY ")) == NULL)) {
2455                 ptr_array_free_strings(argbuf);
2456                 g_ptr_array_free(argbuf, TRUE);
2457                 return;
2458         }
2459
2460         capstr += strlen("CAPABILITY ");
2461
2462         IMAP_SESSION(session)->capability = g_strsplit(capstr, " ", 0);
2463
2464         ptr_array_free_strings(argbuf);
2465         g_ptr_array_free(argbuf, TRUE);
2466 }
2467
2468 static gboolean imap_has_capability(IMAPSession *session, const gchar *cap)
2469 {
2470         gchar **p;
2471
2472         for (p = session->capability; *p != NULL; ++p)
2473                 if (g_strcasecmp(*p, cap) == 0)
2474                         return TRUE;
2475
2476         return FALSE;
2477 }
2478
2479 static gint imap_cmd_noop(SockInfo *sock)
2480 {
2481         imap_cmd_gen_send(sock, "NOOP");
2482         return imap_cmd_ok(sock, NULL);
2483 }
2484
2485 static gint imap_cmd_starttls(SockInfo *sock)
2486 {
2487         imap_cmd_gen_send(sock, "STARTTLS");
2488         return imap_cmd_ok(sock, NULL);
2489 }
2490
2491 #define THROW(err) { ok = err; goto catch; }
2492
2493 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2494 {
2495         gint ok;
2496         GPtrArray *argbuf;
2497         gchar *str;
2498
2499         argbuf = g_ptr_array_new();
2500
2501         imap_cmd_gen_send(sock, "NAMESPACE");
2502         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2503
2504         str = search_array_str(argbuf, "NAMESPACE");
2505         if (!str) THROW(IMAP_ERROR);
2506
2507         *ns_str = g_strdup(str);
2508
2509 catch:
2510         ptr_array_free_strings(argbuf);
2511         g_ptr_array_free(argbuf, TRUE);
2512
2513         return ok;
2514 }
2515
2516 #undef THROW
2517
2518 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2519                           const gchar *mailbox, GPtrArray *argbuf)
2520 {
2521         gchar *ref_, *mailbox_;
2522
2523         if (!ref) ref = "\"\"";
2524         if (!mailbox) mailbox = "\"\"";
2525
2526         QUOTE_IF_REQUIRED(ref_, ref);
2527         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2528         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2529
2530         return imap_cmd_ok(sock, argbuf);
2531 }
2532
2533 #define THROW goto catch
2534
2535 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2536                                gboolean examine,
2537                                gint *exists, gint *recent, gint *unseen,
2538                                guint32 *uid_validity)
2539 {
2540         gint ok;
2541         gchar *resp_str;
2542         GPtrArray *argbuf;
2543         gchar *select_cmd;
2544         gchar *folder_;
2545
2546         *exists = *recent = *unseen = *uid_validity = 0;
2547         argbuf = g_ptr_array_new();
2548
2549         if (examine)
2550                 select_cmd = "EXAMINE";
2551         else
2552                 select_cmd = "SELECT";
2553
2554         QUOTE_IF_REQUIRED(folder_, folder);
2555         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2556
2557         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2558
2559         resp_str = search_array_contain_str(argbuf, "EXISTS");
2560         if (resp_str) {
2561                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2562                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2563                         THROW;
2564                 }
2565         }
2566
2567         resp_str = search_array_contain_str(argbuf, "RECENT");
2568         if (resp_str) {
2569                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2570                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2571                         THROW;
2572                 }
2573         }
2574
2575         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2576         if (resp_str) {
2577                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2578                     != 1) {
2579                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2580                         THROW;
2581                 }
2582         }
2583
2584         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2585         if (resp_str) {
2586                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2587                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2588                         THROW;
2589                 }
2590         }
2591
2592 catch:
2593         ptr_array_free_strings(argbuf);
2594         g_ptr_array_free(argbuf, TRUE);
2595
2596         return ok;
2597 }
2598
2599 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2600                             gint *exists, gint *recent, gint *unseen,
2601                             guint32 *uid_validity)
2602 {
2603         return imap_cmd_do_select(sock, folder, FALSE,
2604                                   exists, recent, unseen, uid_validity);
2605 }
2606
2607 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2608                              gint *exists, gint *recent, gint *unseen,
2609                              guint32 *uid_validity)
2610 {
2611         return imap_cmd_do_select(sock, folder, TRUE,
2612                                   exists, recent, unseen, uid_validity);
2613 }
2614
2615 #undef THROW
2616
2617 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2618 {
2619         gchar *folder_;
2620
2621         QUOTE_IF_REQUIRED(folder_, folder);
2622         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2623
2624         return imap_cmd_ok(sock, NULL);
2625 }
2626
2627 static gint imap_cmd_rename(SockInfo *sock, const gchar *old_folder,
2628                             const gchar *new_folder)
2629 {
2630         gchar *old_folder_, *new_folder_;
2631
2632         QUOTE_IF_REQUIRED(old_folder_, old_folder);
2633         QUOTE_IF_REQUIRED(new_folder_, new_folder);
2634         imap_cmd_gen_send(sock, "RENAME %s %s", old_folder_, new_folder_);
2635
2636         return imap_cmd_ok(sock, NULL);
2637 }
2638
2639 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2640 {
2641         gchar *folder_;
2642
2643         QUOTE_IF_REQUIRED(folder_, folder);
2644         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2645
2646         return imap_cmd_ok(sock, NULL);
2647 }
2648
2649 static gint imap_cmd_search(SockInfo *sock, const gchar *criteria, GSList **list)
2650 {
2651         gint ok;
2652         gchar *uidlist;
2653         GPtrArray *argbuf;
2654
2655         g_return_val_if_fail(criteria != NULL, IMAP_ERROR);
2656         g_return_val_if_fail(list != NULL, IMAP_ERROR);
2657
2658         *list = NULL;
2659
2660         argbuf = g_ptr_array_new();
2661         imap_cmd_gen_send(sock, "UID SEARCH %s", criteria);
2662
2663         ok = imap_cmd_ok(sock, argbuf);
2664         if (ok != IMAP_SUCCESS) {
2665                 ptr_array_free_strings(argbuf);
2666                 g_ptr_array_free(argbuf, TRUE);
2667                 return ok;
2668         }
2669
2670         if ((uidlist = search_array_str(argbuf, "SEARCH ")) != NULL) {
2671                 gchar **strlist, **p;
2672
2673                 strlist = g_strsplit(uidlist + 7, " ", 0);
2674                 for (p = strlist; *p != NULL; ++p) {
2675                         guint msgnum;
2676
2677                         if (sscanf(*p, "%d", &msgnum) == 1)
2678                                 *list = g_slist_append(*list, GINT_TO_POINTER(msgnum));
2679                 }
2680                 g_strfreev(strlist);
2681         }
2682         ptr_array_free_strings(argbuf);
2683         g_ptr_array_free(argbuf, TRUE);
2684
2685         return IMAP_SUCCESS;
2686 }
2687
2688 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2689 {
2690         gint ok;
2691         gchar *buf;
2692         gchar *cur_pos;
2693         gchar size_str[32];
2694         glong size_num;
2695
2696         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2697
2698         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2699
2700         while ((ok = imap_cmd_gen_recv(sock, &buf))
2701                == IMAP_SUCCESS) {
2702                 if (buf[0] != '*' || buf[1] != ' ') {
2703                         g_free(buf);
2704                         return IMAP_ERROR;
2705                 }
2706                 if (strstr(buf, "FETCH") != NULL)
2707                         break;
2708         }
2709         if (ok != IMAP_SUCCESS)
2710                 return ok;
2711
2712         cur_pos = strchr(buf, '{');
2713         if (cur_pos == NULL) {
2714                 g_free(buf);
2715                 return IMAP_ERROR;
2716         }
2717         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2718         if (cur_pos == NULL) {
2719                 g_free(buf);
2720                 return IMAP_ERROR;
2721         }
2722         size_num = atol(size_str);
2723
2724         if (*cur_pos != '\0') {
2725                 g_free(buf);
2726                 return IMAP_ERROR;
2727         }
2728
2729         if (recv_bytes_write_to_file(sock, size_num, filename) != 0) {
2730                 g_free(buf);
2731                 return IMAP_ERROR;
2732         }
2733
2734         if (imap_cmd_gen_recv(sock, &buf) != IMAP_SUCCESS) {
2735                 g_free(buf);
2736                 return IMAP_ERROR;
2737         }
2738
2739         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')') {
2740                 g_free(buf);
2741                 return IMAP_ERROR;
2742         }
2743
2744         g_free(buf);
2745         ok = imap_cmd_ok(sock, NULL);
2746
2747         return ok;
2748 }
2749
2750 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2751                             const gchar *file)
2752 {
2753         gint ok;
2754         gint size;
2755         gchar *destfolder_;
2756         gchar buf[BUFFSIZE], *imapbuf;
2757         FILE *fp;
2758
2759         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2760
2761         size = get_file_size_as_crlf(file);
2762         if ((fp = fopen(file, "rb")) == NULL) {
2763                 FILE_OP_ERROR(file, "fopen");
2764                 return -1;
2765         }
2766         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2767         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2768
2769         ok = imap_cmd_gen_recv(sock, &imapbuf);
2770         if (ok != IMAP_SUCCESS || imapbuf[0] != '+' || imapbuf[1] != ' ') {
2771                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2772                 g_free(imapbuf);
2773                 fclose(fp);
2774                 return IMAP_ERROR;
2775         }
2776         g_free(imapbuf);
2777
2778         log_print("IMAP4> %s\n", _("(sending file...)"));
2779
2780         while (fgets(buf, sizeof(buf), fp) != NULL) {
2781                 strretchomp(buf);
2782                 if (sock_puts(sock, buf) < 0) {
2783                         fclose(fp);
2784                         sock_close(sock);
2785                         return -1;
2786                 }
2787         }
2788
2789         if (ferror(fp)) {
2790                 FILE_OP_ERROR(file, "fgets");
2791                 fclose(fp);
2792                 sock_close(sock);
2793                 return -1;
2794         }
2795
2796         sock_puts(sock, "");
2797
2798         fclose(fp);
2799         return imap_cmd_ok(sock, NULL);
2800 }
2801
2802 #if 0
2803 static void imap_uidplus_copy(IMAPSession *session, MsgInfo *msginfo,
2804                                 const gchar *destfolder, const gchar *okmsginfo)
2805 {
2806         unsigned int olduid, newuid;
2807         IMAPFlags iflags = 0;
2808
2809         if (okmsginfo == NULL)
2810                 return;
2811
2812         if (sscanf(okmsginfo, "%*u OK [COPYUID %*llu %u %u]", &olduid, &newuid) != 2)
2813                 return;
2814
2815         if (olduid != msginfo->msgnum)  /* this should NEVER happen */
2816                 return;
2817
2818         if (imap_select(session, IMAP_FOLDER(msginfo->folder->folder), destfolder,
2819                         NULL, NULL, NULL, NULL) != IMAP_SUCCESS)
2820                 return;
2821
2822         if (msginfo->flags.perm_flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
2823         if (msginfo->flags.perm_flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
2824         if (iflags)
2825                 imap_set_message_flags(session, newuid, newuid, iflags, TRUE);
2826
2827         if (msginfo->flags.perm_flags & MSG_UNREAD)
2828                 imap_set_message_flags(session, newuid, newuid, IMAP_FLAG_SEEN, FALSE);
2829
2830         imap_select(session, IMAP_FOLDER(msginfo->folder->folder), msginfo->folder->path,
2831                     NULL, NULL, NULL, NULL);
2832 }
2833 #endif
2834
2835 static gint imap_cmd_copy(IMAPSession *session,
2836     gint32 msgnum, const gchar *destfolder, gint32 *new_uid)
2837 {
2838         gint ok;
2839         gint32 olduid, newuid;
2840         gchar *okmsginfo;
2841         gchar *destfolder_;
2842         GPtrArray *reply;
2843
2844         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2845         g_return_val_if_fail(session != NULL, IMAP_ERROR);
2846         g_return_val_if_fail(new_uid != NULL, IMAP_ERROR);
2847
2848         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2849         imap_cmd_gen_send(SESSION(session)->sock, "UID COPY %d %s", msgnum, destfolder_);
2850
2851         reply = g_ptr_array_new();
2852
2853         ok = imap_cmd_ok(SESSION(session)->sock, reply);
2854         if (ok != IMAP_SUCCESS)
2855                 log_warning(_("can't copy %d to %s\n"), msgnum, destfolder_);
2856         else if (imap_has_capability(session, "UIDPLUS") && reply->len > 0)
2857                 if ((okmsginfo = g_ptr_array_index(reply, reply->len - 1)) != NULL &&
2858                     sscanf(okmsginfo, "%*u OK [COPYUID %*u %u %u]", &olduid, &newuid) == 2 &&
2859                     olduid == msgnum)
2860                         *new_uid = newuid;
2861
2862         ptr_array_free_strings(reply);
2863         g_ptr_array_free(reply, TRUE);
2864         return ok;
2865 }
2866
2867 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2868 {
2869         static GString *header_fields = NULL;
2870
2871         if (header_fields == NULL) {
2872                 const HeaderEntry *headers, *elem;
2873
2874                 headers = procheader_get_headernames(FALSE);
2875                 header_fields = g_string_new("");
2876
2877                 for (elem = headers; elem->name != NULL; ++elem) {
2878                         gint namelen = strlen(elem->name);
2879
2880                         /* Header fields ending with space are not rfc822 headers */
2881                         if (elem->name[namelen - 1] == ' ')
2882                                 continue;
2883
2884                         /* strip : at the of header field */
2885                         if(elem->name[namelen - 1] == ':')
2886                                 namelen--;
2887
2888                         if (namelen <= 0)
2889                                 continue;
2890
2891                         g_string_sprintfa(header_fields, "%s%.*s",
2892                                         header_fields->str[0] != '\0' ? " " : "",
2893                                         namelen, elem->name);
2894                 }
2895         }
2896
2897         imap_cmd_gen_send
2898                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE BODY.PEEK[HEADER.FIELDS (%s)])",
2899                  first_uid, last_uid,
2900                  header_fields->str);
2901
2902         return IMAP_SUCCESS;
2903 }
2904
2905 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2906                            gchar *sub_cmd)
2907 {
2908         gint ok;
2909
2910         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2911                           first_uid, last_uid, sub_cmd);
2912
2913         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2914                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2915                             first_uid, last_uid, sub_cmd);
2916                 return ok;
2917         }
2918
2919         return IMAP_SUCCESS;
2920 }
2921
2922 static gint imap_cmd_expunge(SockInfo *sock)
2923 {
2924         gint ok;
2925
2926         imap_cmd_gen_send(sock, "EXPUNGE");
2927         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2928                 log_warning(_("error while imap command: EXPUNGE\n"));
2929                 return ok;
2930         }
2931
2932         return IMAP_SUCCESS;
2933 }
2934
2935 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2936 {
2937         gint ok;
2938         gchar *buf;
2939         gint cmd_num;
2940         gchar cmd_status[IMAPBUFSIZE];
2941
2942         while ((ok = imap_cmd_gen_recv(sock, &buf))
2943                == IMAP_SUCCESS) {
2944                 if (buf[0] == '*' && buf[1] == ' ') {
2945                         if (argbuf)
2946                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2947                         continue;
2948                 }
2949
2950                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2951                         return IMAP_ERROR;
2952                 else if (cmd_num == imap_cmd_count &&
2953                          !strcmp(cmd_status, "OK")) {
2954                         if (argbuf)
2955                                 g_ptr_array_add(argbuf, g_strdup(buf));
2956                         g_free(buf);
2957                         return IMAP_SUCCESS;
2958                 } else {
2959                         g_free(buf);
2960                         return IMAP_ERROR;
2961                 }
2962         }
2963         g_free(buf);
2964
2965         return ok;
2966 }
2967
2968 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2969 {
2970         gchar buf[IMAPBUFSIZE];
2971         gchar tmp[IMAPBUFSIZE];
2972         gchar *p;
2973         va_list args;
2974
2975         va_start(args, format);
2976         g_vsnprintf(tmp, sizeof(tmp), format, args);
2977         va_end(args);
2978
2979         imap_cmd_count++;
2980
2981         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2982         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2983                 *p = '\0';
2984                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2985         } else
2986                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2987
2988         sock_write(sock, buf, strlen(buf));
2989 }
2990
2991 static gint imap_cmd_gen_recv(SockInfo *sock, gchar **buf)
2992 {
2993         if ((*buf = sock_getline(sock)) == NULL)
2994                 return IMAP_SOCKET;
2995
2996         strretchomp(*buf);
2997
2998         log_print("IMAP4< %s\n", *buf);
2999
3000         return IMAP_SUCCESS;
3001 }
3002
3003
3004 /* misc utility functions */
3005
3006 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
3007 {
3008         gchar *tmp;
3009
3010         dest[0] = '\0';
3011         tmp = strchr(src, ch);
3012         if (!tmp)
3013                 return NULL;
3014
3015         memcpy(dest, src, MIN(tmp - src, len - 1));
3016         dest[MIN(tmp - src, len - 1)] = '\0';
3017
3018         return tmp + 1;
3019 }
3020
3021 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
3022 {
3023         const gchar *p = src;
3024         gint n = 0;
3025
3026         g_return_val_if_fail(*p == ch, NULL);
3027
3028         *dest = '\0';
3029         p++;
3030
3031         while (*p != '\0' && *p != ch) {
3032                 if (n < len - 1) {
3033                         if (*p == '\\' && *(p + 1) != '\0')
3034                                 p++;
3035                         *dest++ = *p++;
3036                 } else
3037                         p++;
3038                 n++;
3039         }
3040
3041         *dest = '\0';
3042         return (gchar *)(*p == ch ? p + 1 : p);
3043 }
3044
3045 static gchar *search_array_contain_str(GPtrArray *array, const gchar *str)
3046 {
3047         gint i;
3048
3049         for (i = 0; i < array->len; i++) {
3050                 gchar *tmp;
3051
3052                 tmp = g_ptr_array_index(array, i);
3053                 if (strstr(tmp, str) != NULL)
3054                         return tmp;
3055         }
3056
3057         return NULL;
3058 }
3059
3060 static gchar *search_array_str(GPtrArray *array, const gchar *str)
3061 {
3062         gint i;
3063         gint len;
3064
3065         len = strlen(str);
3066
3067         for (i = 0; i < array->len; i++) {
3068                 gchar *tmp;
3069
3070                 tmp = g_ptr_array_index(array, i);
3071                 if (!strncmp(tmp, str, len))
3072                         return tmp;
3073         }
3074
3075         return NULL;
3076 }
3077
3078 static void imap_path_separator_subst(gchar *str, gchar separator)
3079 {
3080         gchar *p;
3081         gboolean in_escape = FALSE;
3082
3083         if (!separator || separator == '/') return;
3084
3085         for (p = str; *p != '\0'; p++) {
3086                 if (*p == '/' && !in_escape)
3087                         *p = separator;
3088                 else if (*p == '&' && *(p + 1) != '-' && !in_escape)
3089                         in_escape = TRUE;
3090                 else if (*p == '-' && in_escape)
3091                         in_escape = FALSE;
3092         }
3093 }
3094
3095 static gchar *imap_modified_utf7_to_locale(const gchar *mutf7_str)
3096 {
3097 #if !HAVE_ICONV
3098         return g_strdup(mutf7_str);
3099 #else
3100         static iconv_t cd = (iconv_t)-1;
3101         static gboolean iconv_ok = TRUE;
3102         GString *norm_utf7;
3103         gchar *norm_utf7_p;
3104         size_t norm_utf7_len;
3105         const gchar *p;
3106         gchar *to_str, *to_p;
3107         size_t to_len;
3108         gboolean in_escape = FALSE;
3109
3110         if (!iconv_ok) return g_strdup(mutf7_str);
3111
3112         if (cd == (iconv_t)-1) {
3113                 cd = iconv_open(conv_get_current_charset_str(), "UTF-7");
3114                 if (cd == (iconv_t)-1) {
3115                         g_warning("iconv cannot convert UTF-7 to %s\n",
3116                                   conv_get_current_charset_str());
3117                         iconv_ok = FALSE;
3118                         return g_strdup(mutf7_str);
3119                 }
3120         }
3121
3122         norm_utf7 = g_string_new(NULL);
3123
3124         for (p = mutf7_str; *p != '\0'; p++) {
3125                 /* replace: '&'  -> '+',
3126                             "&-" -> '&',
3127                             escaped ','  -> '/' */
3128                 if (!in_escape && *p == '&') {
3129                         if (*(p + 1) != '-') {
3130                                 g_string_append_c(norm_utf7, '+');
3131                                 in_escape = TRUE;
3132                         } else {
3133                                 g_string_append_c(norm_utf7, '&');
3134                                 p++;
3135                         }
3136                 } else if (in_escape && *p == ',') {
3137                         g_string_append_c(norm_utf7, '/');
3138                 } else if (in_escape && *p == '-') {
3139                         g_string_append_c(norm_utf7, '-');
3140                         in_escape = FALSE;
3141                 } else {
3142                         g_string_append_c(norm_utf7, *p);
3143                 }
3144         }
3145
3146         norm_utf7_p = norm_utf7->str;
3147         norm_utf7_len = norm_utf7->len;
3148         to_len = strlen(mutf7_str) * 5;
3149         to_p = to_str = g_malloc(to_len + 1);
3150
3151         if (iconv(cd, (ICONV_CONST gchar **)&norm_utf7_p, &norm_utf7_len,
3152                   &to_p, &to_len) == -1) {
3153                 g_warning(_("iconv cannot convert UTF-7 to %s\n"),
3154                           conv_get_current_charset_str());
3155                 g_string_free(norm_utf7, TRUE);
3156                 g_free(to_str);
3157                 return g_strdup(mutf7_str);
3158         }
3159
3160         /* second iconv() call for flushing */
3161         iconv(cd, NULL, NULL, &to_p, &to_len);
3162         g_string_free(norm_utf7, TRUE);
3163         *to_p = '\0';
3164
3165         return to_str;
3166 #endif /* !HAVE_ICONV */
3167 }
3168
3169 static gchar *imap_locale_to_modified_utf7(const gchar *from)
3170 {
3171 #if !HAVE_ICONV
3172         return g_strdup(from);
3173 #else
3174         static iconv_t cd = (iconv_t)-1;
3175         static gboolean iconv_ok = TRUE;
3176         gchar *norm_utf7, *norm_utf7_p;
3177         size_t from_len, norm_utf7_len;
3178         GString *to_str;
3179         gchar *from_tmp, *to, *p;
3180         gboolean in_escape = FALSE;
3181
3182         if (!iconv_ok) return g_strdup(from);
3183
3184         if (cd == (iconv_t)-1) {
3185                 cd = iconv_open("UTF-7", conv_get_current_charset_str());
3186                 if (cd == (iconv_t)-1) {
3187                         g_warning("iconv cannot convert %s to UTF-7\n",
3188                                   conv_get_current_charset_str());
3189                         iconv_ok = FALSE;
3190                         return g_strdup(from);
3191                 }
3192         }
3193
3194         Xstrdup_a(from_tmp, from, return g_strdup(from));
3195         from_len = strlen(from);
3196         norm_utf7_len = from_len * 5;
3197         Xalloca(norm_utf7, norm_utf7_len + 1, return g_strdup(from));
3198         norm_utf7_p = norm_utf7;
3199
3200 #define IS_PRINT(ch) (isprint(ch) && isascii(ch))
3201
3202         while (from_len > 0) {
3203                 if (IS_PRINT(*from_tmp)) {
3204                         /* printable ascii char */
3205                         *norm_utf7_p = *from_tmp;
3206                         norm_utf7_p++;
3207                         from_tmp++;
3208                         from_len--;
3209                 } else {
3210                         size_t mblen;
3211
3212                         /* unprintable char: convert to UTF-7 */
3213                         for (mblen = 0;
3214                              !IS_PRINT(from_tmp[mblen]) && mblen < from_len;
3215                              mblen++)
3216                                 ;
3217                         from_len -= mblen;
3218                         if (iconv(cd, (ICONV_CONST gchar **)&from_tmp, &mblen,
3219                                   &norm_utf7_p, &norm_utf7_len) == -1) {
3220                                 g_warning("iconv cannot convert %s to UTF-7\n",
3221                                           conv_get_current_charset_str());
3222                                 return g_strdup(from);
3223                         }
3224
3225                         /* second iconv() call for flushing */
3226                         iconv(cd, NULL, NULL, &norm_utf7_p, &norm_utf7_len);
3227                 }
3228         }
3229
3230 #undef IS_PRINT
3231
3232         *norm_utf7_p = '\0';
3233         to_str = g_string_new(NULL);
3234         for (p = norm_utf7; p < norm_utf7_p; p++) {
3235                 /* replace: '&' -> "&-",
3236                             '+' -> '&',
3237                             escaped '/' -> ',' */
3238                 if (!in_escape && *p == '&') {
3239                         g_string_append(to_str, "&-");
3240                 } else if (!in_escape && *p == '+') {
3241                         g_string_append_c(to_str, '&');
3242                         in_escape = TRUE;
3243                 } else if (in_escape && *p == '/') {
3244                         g_string_append_c(to_str, ',');
3245                 } else if (in_escape && *p == '-') {
3246                         in_escape = FALSE;
3247                         g_string_append_c(to_str, '-');
3248                 } else {
3249                         g_string_append_c(to_str, *p);
3250                 }
3251         }
3252
3253         if (in_escape) {
3254                 in_escape = FALSE;
3255                 g_string_append_c(to_str, '-');
3256         }
3257
3258         to = to_str->str;
3259         g_string_free(to_str, FALSE);
3260
3261         return to;
3262 #endif /* !HAVE_ICONV */
3263 }
3264
3265 static gboolean imap_rename_folder_func(GNode *node, gpointer data)
3266 {
3267         FolderItem *item = node->data;
3268         gchar **paths = data;
3269         const gchar *oldpath = paths[0];
3270         const gchar *newpath = paths[1];
3271         gchar *base;
3272         gchar *new_itempath;
3273         gint oldpathlen;
3274
3275         oldpathlen = strlen(oldpath);
3276         if (strncmp(oldpath, item->path, oldpathlen) != 0) {
3277                 g_warning("path doesn't match: %s, %s\n", oldpath, item->path);
3278                 return TRUE;
3279         }
3280
3281         base = item->path + oldpathlen;
3282         while (*base == G_DIR_SEPARATOR) base++;
3283         if (*base == '\0')
3284                 new_itempath = g_strdup(newpath);
3285         else
3286                 new_itempath = g_strconcat(newpath, G_DIR_SEPARATOR_S, base,
3287                                            NULL);
3288         g_free(item->path);
3289         item->path = new_itempath;
3290
3291         return FALSE;
3292 }
3293
3294 gint imap_get_num_list(Folder *folder, FolderItem *_item, GSList **msgnum_list)
3295 {
3296         IMAPFolderItem *item = (IMAPFolderItem *)_item;
3297         IMAPSession *session;
3298         gint ok, lastuid_old, nummsgs = 0, exists, resent, unseen, uid_val;
3299         GSList *uidlist, *elem;
3300         gchar *dir, *cmd_buf;
3301
3302         g_return_val_if_fail(folder != NULL, -1);
3303         g_return_val_if_fail(item != NULL, -1);
3304         g_return_val_if_fail(item->item.path != NULL, -1);
3305         g_return_val_if_fail(FOLDER_CLASS(folder) == &imap_class, -1);
3306         g_return_val_if_fail(folder->account != NULL, -1);
3307
3308         session = imap_session_get(folder);
3309         g_return_val_if_fail(session != NULL, -1);
3310
3311         ok = imap_select(session, IMAP_FOLDER(folder), item->item.path,
3312                          &exists, &resent, &unseen, &uid_val);
3313         if (ok != IMAP_SUCCESS)
3314                 return -1;
3315
3316         if (exists == 0)
3317                 return 0;
3318
3319         cmd_buf = g_strdup_printf("UID %d:*", item->lastuid + 1);
3320         ok = imap_cmd_search(SESSION(session)->sock, cmd_buf, &uidlist);
3321         g_free(cmd_buf);
3322
3323         if (ok == IMAP_SOCKET) {
3324                 session_destroy((Session *)session);
3325                 ((RemoteFolder *)folder)->session = NULL;
3326                 return -1;
3327         }
3328
3329         if (ok != IMAP_SUCCESS) {
3330                 gint i;
3331                 GPtrArray *argbuf;
3332
3333                 argbuf = g_ptr_array_new();
3334
3335                 cmd_buf = g_strdup_printf("UID FETCH %d:* (UID)", item->lastuid + 1);
3336                 imap_cmd_gen_send(SESSION(session)->sock, cmd_buf);
3337                 g_free(cmd_buf);
3338                 ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
3339                 if (ok != IMAP_SUCCESS) {
3340                         ptr_array_free_strings(argbuf);
3341                         g_ptr_array_free(argbuf, TRUE);
3342                         return -1;
3343                 }
3344
3345                 for(i = 0; i < argbuf->len; i++) {
3346                         int ret, msgnum;
3347
3348                         if((ret = sscanf(g_ptr_array_index(argbuf, i),
3349                                     "%*d FETCH (UID %d)", &msgnum)) == 1)
3350                                 uidlist = g_slist_prepend(uidlist, GINT_TO_POINTER(msgnum));
3351                 }
3352                 ptr_array_free_strings(argbuf);
3353                 g_ptr_array_free(argbuf, TRUE);
3354         }
3355
3356         lastuid_old = item->lastuid;
3357         *msgnum_list = g_slist_copy(item->uid_list);
3358         debug_print("Got %d uids from cache\n", g_slist_length(item->uid_list));
3359
3360         for (elem = uidlist; elem != NULL; elem = g_slist_next(elem)) {
3361                 guint msgnum;
3362
3363                 msgnum = GPOINTER_TO_INT(elem->data);
3364                 if (msgnum > lastuid_old) {
3365                         *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(msgnum));
3366                         item->uid_list = g_slist_prepend(item->uid_list, GINT_TO_POINTER(msgnum));
3367                         nummsgs++;
3368
3369                         if(msgnum > item->lastuid)
3370                                 item->lastuid = msgnum;
3371                 }
3372         }
3373         g_slist_free(uidlist);
3374
3375         if (g_slist_length(item->uid_list) != exists) {
3376                 /* Cache contains more messages then folder, we have cached
3377                    an old UID of a message that was removed */
3378                 debug_print("Freeing imap uid cache");
3379                 item->lastuid = 0;
3380                 g_slist_free(item->uid_list);
3381                 item->uid_list = NULL;
3382
3383                 g_slist_free(*msgnum_list);
3384
3385                 return imap_get_num_list(folder, _item, msgnum_list);
3386         }
3387
3388         dir = folder_item_get_path((FolderItem *)item);
3389         debug_print("removing old messages from %s\n", dir);
3390         remove_numbered_files_not_in_list(dir, *msgnum_list);
3391         g_free(dir);
3392
3393         return nummsgs;
3394 }
3395
3396 static MsgInfo *imap_parse_msg(const gchar *file, FolderItem *item)
3397 {
3398         MsgInfo *msginfo;
3399         MsgFlags flags;
3400
3401         flags.perm_flags = MSG_NEW|MSG_UNREAD;
3402         flags.tmp_flags = 0;
3403
3404         g_return_val_if_fail(item != NULL, NULL);
3405         g_return_val_if_fail(file != NULL, NULL);
3406
3407         if (item->stype == F_QUEUE) {
3408                 MSG_SET_TMP_FLAGS(flags, MSG_QUEUED);
3409         } else if (item->stype == F_DRAFT) {
3410                 MSG_SET_TMP_FLAGS(flags, MSG_DRAFT);
3411         }
3412
3413         msginfo = procheader_parse_file(file, flags, FALSE, FALSE);
3414         if (!msginfo) return NULL;
3415
3416         msginfo->folder = item;
3417
3418         return msginfo;
3419 }
3420
3421 static int compare_uint(gconstpointer a, gconstpointer b)
3422 {
3423         return a-b;
3424 }
3425
3426 GSList *imap_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
3427 {
3428         IMAPSession *session;
3429         GSList *sorted_list, *elem, *ret = NULL;
3430         gint ok, startnum, lastnum;
3431
3432         g_return_val_if_fail(folder != NULL, NULL);
3433         g_return_val_if_fail(item != NULL, NULL);
3434         g_return_val_if_fail(msgnum_list != NULL, NULL);
3435
3436         session = imap_session_get(folder);
3437         g_return_val_if_fail(session != NULL, NULL);
3438
3439         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
3440                          NULL, NULL, NULL, NULL);
3441         if (ok != IMAP_SUCCESS)
3442                 return NULL;
3443
3444         sorted_list = g_slist_sort(g_slist_copy(msgnum_list), compare_uint);
3445
3446         startnum = lastnum = GPOINTER_TO_INT(sorted_list->data);
3447
3448         for (elem = sorted_list;; elem = g_slist_next(elem)) {
3449                 guint num;
3450
3451                 if (elem)
3452                         num = GPOINTER_TO_INT(elem->data);
3453
3454                 if (num > lastnum + 1 || elem == NULL) {
3455                         if (!(item->stype == F_QUEUE || item->stype == F_DRAFT)) {
3456                                 ret = g_slist_concat(ret,
3457                                         imap_get_uncached_messages(
3458                                                 session, item, startnum, lastnum));
3459                         } else {
3460                                 int i;
3461                                 for (i = startnum; i <= lastnum; ++i) {
3462                                         gchar *file;
3463
3464                                         file = imap_fetch_msg(folder, item, i);
3465                                         if (file != NULL) {
3466                                                 MsgInfo *msginfo = imap_parse_msg(file, item);
3467                                                 if (msginfo != NULL) {
3468                                                         msginfo->msgnum = i;
3469                                                         ret = g_slist_append(ret, msginfo);
3470                                                 }
3471                                                 g_free(file);
3472                                         }
3473                                 }
3474                         }
3475
3476                         if (elem == NULL)
3477                                 break;
3478
3479                         startnum = num;
3480                 }
3481                 lastnum = num;
3482         }
3483
3484         g_slist_free(sorted_list);
3485
3486         return ret;
3487 }
3488
3489 MsgInfo *imap_get_msginfo(Folder *folder, FolderItem *item, gint uid)
3490 {
3491         IMAPSession *session;
3492         MsgInfo *msginfo = NULL;
3493         gint ok;
3494
3495         g_return_val_if_fail(folder != NULL, NULL);
3496         g_return_val_if_fail(item != NULL, NULL);
3497
3498         session = imap_session_get(folder);
3499         g_return_val_if_fail(session != NULL, NULL);
3500
3501         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
3502                          NULL, NULL, NULL, NULL);
3503         if (ok != IMAP_SUCCESS)
3504                 return NULL;
3505
3506         if (!(item->stype == F_QUEUE || item->stype == F_DRAFT)) {
3507                 GSList *list;
3508
3509                 list = imap_get_uncached_messages(session, item, uid, uid);
3510                 if (list) {
3511                         msginfo = (MsgInfo *)list->data;
3512                         list->data = NULL;
3513                 }
3514                 procmsg_msg_list_free(list);
3515         } else {
3516                 gchar *file;
3517
3518                 file = imap_fetch_msg(folder, item, uid);
3519                 if (file != NULL) {
3520                         msginfo = imap_parse_msg(file, item);
3521                         if (msginfo != NULL)
3522                                 msginfo->msgnum = uid;
3523                         g_free(file);
3524                 }
3525         }
3526
3527         return msginfo;
3528 }
3529
3530 gboolean imap_check_msgnum_validity(Folder *folder, FolderItem *_item)
3531 {
3532         IMAPSession *session;
3533         IMAPFolderItem *item = (IMAPFolderItem *)_item;
3534         gint ok, exists = 0, recent = 0, unseen = 0;
3535         guint32 uid_next, uid_validity = 0;
3536
3537         g_return_val_if_fail(folder != NULL, FALSE);
3538         g_return_val_if_fail(item != NULL, FALSE);
3539         g_return_val_if_fail(item->item.folder != NULL, FALSE);
3540         g_return_val_if_fail(FOLDER_CLASS(item->item.folder) == &imap_class, FALSE);
3541
3542         session = imap_session_get(folder);
3543         g_return_val_if_fail(session != NULL, FALSE);
3544
3545         ok = imap_status(session, IMAP_FOLDER(folder), item->item.path,
3546                          &exists, &recent, &uid_next, &uid_validity, &unseen);
3547         if (ok != IMAP_SUCCESS)
3548                 return FALSE;
3549
3550         if(item->item.mtime == uid_validity)
3551                 return TRUE;
3552
3553         debug_print("Freeing imap uid cache");
3554         item->lastuid = 0;
3555         g_slist_free(item->uid_list);
3556         item->uid_list = NULL;
3557
3558         item->item.mtime = uid_validity;
3559
3560         imap_delete_all_cached_messages((FolderItem *)item);
3561
3562         return FALSE;
3563 }