src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <ctype.h>
  33 #include <time.h>
  34
  35 #include "intl.h"
  36 #include "imap.h"
  37 #include "socket.h"
  38 #include "ssl.h"
  39 #include "recv.h"
  40 #include "procmsg.h"
  41 #include "procheader.h"
  42 #include "folder.h"
  43 #include "statusbar.h"
  44 #include "prefs_account.h"
  45 #include "codeconv.h"
  46 #include "utils.h"
  47 #include "inputdialog.h"
  48
  49 #define IMAP4_PORT      143
  50 #if USE_SSL
  51 #define IMAPS_PORT      993
  52 #endif
  53
  54 #define QUOTE_IF_REQUIRED(out, str) \
  55 { \
  56         if (*str != '"' && strchr(str, ' ')) { \
  57                 gchar *__tmp; \
  58                 gint len; \
  59  \
  60                 len = strlen(str) + 3; \
  61                 Xalloca(__tmp, len, return IMAP_ERROR); \
  62                 g_snprintf(__tmp, len, "\"%s\"", str); \
  63                 out = __tmp; \
  64         } else { \
  65                 Xstrdup_a(out, str, return IMAP_ERROR); \
  66         } \
  67 }
  68
  69 static GList *session_list = NULL;
  70
  71 static gint imap_cmd_count = 0;
  72
  73 static void imap_folder_init            (Folder         *folder,
  74                                          const gchar    *name,
  75                                          const gchar    *path);
  76
  77 static IMAPSession *imap_session_get    (Folder         *folder);
  78
  79 static gint imap_scan_tree_recursive    (IMAPSession    *session,
  80                                          FolderItem     *item,
  81                                          IMAPNameSpace  *namespace);
  82 static GSList *imap_parse_list          (IMAPSession    *session,
  83                                          const gchar    *path);
  84 static gint imap_create_trash           (Folder         *folder);
  85
  86 static gint imap_do_copy                (Folder         *folder,
  87                                          FolderItem     *dest,
  88                                          MsgInfo        *msginfo,
  89                                          gboolean        remove_source);
  90 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  91                                          FolderItem     *dest,
  92                                          GSList         *msglist,
  93                                          gboolean        remove_source);
  94
  95 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
  96                                                  FolderItem     *item,
  97                                                  guint32         first_uid,
  98                                                  guint32         last_uid);
  99 static GSList *imap_delete_cached_messages      (GSList         *mlist,
 100                                                  FolderItem     *item,
 101                                                  guint32         first_uid,
 102                                                  guint32         last_uid);
 103 static void imap_delete_all_cached_messages     (FolderItem     *item);
 104
 105 #if USE_SSL
 106 static SockInfo *imap_open              (const gchar    *server,
 107                                          gushort         port,
 108                                          gboolean        use_ssl);
 109 #else
 110 static SockInfo *imap_open              (const gchar    *server,
 111                                          gushort         port);
 112 #endif
 113
 114 static SockInfo *imap_open_tunnel(const gchar *server,
 115                                   const gchar *tunnelcmd);
 116
 117 static SockInfo *imap_init_sock(SockInfo *sock);
 118
 119 static gint imap_set_message_flags      (IMAPSession    *session,
 120                                          guint32         first_uid,
 121                                          guint32         last_uid,
 122                                          IMAPFlags       flag,
 123                                          gboolean        is_set);
 124 static gint imap_select                 (IMAPSession    *session,
 125                                          IMAPFolder     *folder,
 126                                          const gchar    *path,
 127                                          gint           *exists,
 128                                          gint           *recent,
 129                                          gint           *unseen,
 130                                          guint32        *uid_validity);
 131 static gint imap_get_uid                (IMAPSession    *session,
 132                                          gint            msgnum,
 133                                          guint32        *uid);
 134 static gint imap_status                 (IMAPSession    *session,
 135                                          IMAPFolder     *folder,
 136                                          const gchar    *path,
 137                                          gint           *messages,
 138                                          gint           *recent,
 139                                          gint           *unseen,
 140                                          guint32        *uid_validity);
 141
 142 static void imap_parse_namespace                (IMAPSession    *session,
 143                                                  IMAPFolder     *folder);
 144 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 145                                                  const gchar    *path);
 146 static gchar *imap_get_real_path                (IMAPFolder     *folder,
 147                                                  const gchar    *path);
 148
 149 static gchar *imap_parse_atom           (SockInfo       *sock,
 150                                          gchar          *src,
 151                                          gchar          *dest,
 152                                          gint            dest_len,
 153                                          GString        *str);
 154 static gchar *imap_parse_one_address    (SockInfo       *sock,
 155                                          gchar          *start,
 156                                          gchar          *out_from_str,
 157                                          gchar          *out_fromname_str,
 158                                          GString        *str);
 159 static gchar *imap_parse_address        (SockInfo       *sock,
 160                                          gchar          *start,
 161                                          gchar         **out_from_str,
 162                                          gchar         **out_fromname_str,
 163                                          GString        *str);
 164 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 165 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 166                                          GString        *line_str);
 167 static gint imap_greeting               (SockInfo *sock,
 168                                          gboolean *is_preauth);
 169
 170 /* low-level IMAP4rev1 commands */
 171 static gint imap_cmd_login      (SockInfo       *sock,
 172                                  const gchar    *user,
 173                                  const gchar    *pass);
 174 static gint imap_cmd_logout     (SockInfo       *sock);
 175 static gint imap_cmd_noop       (SockInfo       *sock);
 176 static gint imap_cmd_namespace  (SockInfo       *sock,
 177                                  gchar         **ns_str);
 178 static gint imap_cmd_list       (SockInfo       *sock,
 179                                  const gchar    *ref,
 180                                  const gchar    *mailbox,
 181                                  GPtrArray      *argbuf);
 182 static gint imap_cmd_do_select  (SockInfo       *sock,
 183                                  const gchar    *folder,
 184                                  gboolean        examine,
 185                                  gint           *exists,
 186                                  gint           *recent,
 187                                  gint           *unseen,
 188                                  guint32        *uid_validity);
 189 static gint imap_cmd_select     (SockInfo       *sock,
 190                                  const gchar    *folder,
 191                                  gint           *exists,
 192                                  gint           *recent,
 193                                  gint           *unseen,
 194                                  guint32        *uid_validity);
 195 static gint imap_cmd_examine    (SockInfo       *sock,
 196                                  const gchar    *folder,
 197                                  gint           *exists,
 198                                  gint           *recent,
 199                                  gint           *unseen,
 200                                  guint32        *uid_validity);
 201 static gint imap_cmd_create     (SockInfo       *sock,
 202                                  const gchar    *folder);
 203 static gint imap_cmd_delete     (SockInfo       *sock,
 204                                  const gchar    *folder);
 205 static gint imap_cmd_envelope   (SockInfo       *sock,
 206                                  guint32         first_uid,
 207                                  guint32         last_uid);
 208 #if 0
 209 static gint imap_cmd_search     (SockInfo       *sock,
 210                                  GSList         *numlist);
 211 #endif
 212 static gint imap_cmd_fetch      (SockInfo       *sock,
 213                                  guint32         uid,
 214                                  const gchar    *filename);
 215 static gint imap_cmd_append     (SockInfo       *sock,
 216                                  const gchar    *destfolder,
 217                                  const gchar    *file);
 218 static gint imap_cmd_copy       (SockInfo       *sock,
 219                                  guint32         uid,
 220                                  const gchar    *destfolder);
 221 static gint imap_cmd_store      (SockInfo       *sock,
 222                                  guint32         first_uid,
 223                                  guint32         last_uid,
 224                                  gchar          *sub_cmd);
 225 static gint imap_cmd_expunge    (SockInfo       *sock);
 226
 227 static gint imap_cmd_ok         (SockInfo       *sock,
 228                                  GPtrArray      *argbuf);
 229 static void imap_cmd_gen_send   (SockInfo       *sock,
 230                                  const gchar    *format, ...);
 231 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 232                                  gchar          *buf,
 233                                  gint            size);
 234
 235 /* misc utility functions */
 236 static gchar *strchr_cpy                        (const gchar    *src,
 237                                                  gchar           ch,
 238                                                  gchar          *dest,
 239                                                  gint            len);
 240 static gchar *get_quoted                        (const gchar    *src,
 241                                                  gchar           ch,
 242                                                  gchar          *dest,
 243                                                  gint            len);
 244 static gchar *search_array_contain_str          (GPtrArray      *array,
 245                                                  gchar          *str);
 246 static gchar *search_array_str                  (GPtrArray      *array,
 247                                                  gchar          *str);
 248 static gchar *search_array_starts               (GPtrArray *array,
 249                                                  const gchar *str);
 250 static void imap_path_separator_subst           (gchar          *str,
 251                                                  gchar           separator);
 252
 253
 254 Folder *imap_folder_new(const gchar *name, const gchar *path)
 255 {
 256         Folder *folder;
 257
 258         folder = (Folder *)g_new0(IMAPFolder, 1);
 259         imap_folder_init(folder, name, path);
 260
 261         return folder;
 262 }
 263
 264 void imap_folder_destroy(IMAPFolder *folder)
 265 {
 266         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 267 }
 268
 269 static void imap_folder_init(Folder *folder, const gchar *name,
 270                              const gchar *path)
 271 {
 272         folder_remote_folder_init(folder, name, path);
 273
 274         folder->type = F_IMAP;
 275
 276         folder->get_msg_list        = imap_get_msg_list;
 277         folder->fetch_msg           = imap_fetch_msg;
 278         folder->add_msg             = imap_add_msg;
 279         folder->move_msg            = imap_move_msg;
 280         folder->move_msgs_with_dest = imap_move_msgs_with_dest;
 281         folder->copy_msg            = imap_copy_msg;
 282         folder->copy_msgs_with_dest = imap_copy_msgs_with_dest;
 283         folder->remove_msg          = imap_remove_msg;
 284         folder->remove_all_msg      = imap_remove_all_msg;
 285         folder->scan                = imap_scan_folder;
 286         folder->scan_tree           = imap_scan_tree;
 287         folder->create_tree         = imap_create_tree;
 288         folder->create_folder       = imap_create_folder;
 289         folder->remove_folder       = imap_remove_folder;
 290 }
 291
 292 static IMAPSession *imap_session_get(Folder *folder)
 293 {
 294         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 295         gushort port;
 296
 297         g_return_val_if_fail(folder != NULL, NULL);
 298         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 299         g_return_val_if_fail(folder->account != NULL, NULL);
 300
 301 #if USE_SSL
 302         port = folder->account->set_imapport ? folder->account->imapport
 303                 : folder->account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 304 #else
 305         port = folder->account->set_imapport ? folder->account->imapport
 306                 : IMAP4_PORT;
 307 #endif
 308
 309         if (!rfolder->session) {
 310                 rfolder->session =
 311                         imap_session_new(folder->account);
 312                 if (rfolder->session) {
 313                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 314                                              IMAP_FOLDER(folder));
 315                         rfolder->session->last_access_time = time(NULL);
 316                 }
 317                 statusbar_pop_all();
 318                 return IMAP_SESSION(rfolder->session);
 319         }
 320
 321         /* I think the point of this code is to avoid sending a
 322          * keepalive if we've used the session recently and therefore
 323          * think it's still alive.  Unfortunately, most of the code
 324          * does not yet check for errors on the socket, and so if the
 325          * connection drops we don't notice until the timeout expires.
 326          * A better solution than sending a NOOP every time would be
 327          * for every command to be prepared to retry until it is
 328          * successfully sent. -- mbp */
 329         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 330                 rfolder->session->last_access_time = time(NULL);
 331                 statusbar_pop_all();
 332                 return IMAP_SESSION(rfolder->session);
 333         }
 334
 335         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 336                 log_warning(_("IMAP4 connection to %s:%d has been"
 337                               " disconnected. Reconnecting...\n"),
 338                             folder->account->recv_server, port);
 339                 session_destroy(rfolder->session);
 340                 rfolder->session =
 341                         imap_session_new(folder->account);
 342                 if (rfolder->session)
 343                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 344                                              IMAP_FOLDER(folder));
 345         }
 346
 347         if (rfolder->session)
 348                 rfolder->session->last_access_time = time(NULL);
 349         statusbar_pop_all();
 350         return IMAP_SESSION(rfolder->session);
 351 }
 352
 353 Session *imap_session_new(const PrefsAccount *account)
 354 {
 355         IMAPSession *session;
 356         SockInfo *imap_sock;
 357         gushort port;
 358         gchar *pass;
 359         gboolean is_preauth;
 360
 361 #ifdef USE_SSL
 362         /* FIXME: IMAP over SSL only... */
 363         gboolean use_ssl;
 364
 365         port = account->set_imapport ? account->imapport
 366                 : account->ssl_imap ? IMAPS_PORT : IMAP4_PORT;
 367         use_ssl = account->ssl_imap ? TRUE : FALSE;
 368 #else
 369         port = account->set_imapport ? account->imapport
 370                 : IMAP4_PORT;
 371 #endif
 372
 373         if (account->set_tunnelcmd) {
 374                 log_message(_("creating tunneled IMAP4 connection\n"));
 375                 if ((imap_sock = imap_open_tunnel(account->recv_server,
 376                                                   account->tunnelcmd)) == NULL)
 377                         return NULL;
 378         } else {
 379                 g_return_val_if_fail(account->recv_server != NULL, NULL);
 380
 381                 log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 382                             account->recv_server, port);
 383
 384 #if USE_SSL
 385                 if ((imap_sock = imap_open(account->recv_server, port,
 386                                            use_ssl)) == NULL)
 387 #else
 388                 if ((imap_sock = imap_open(account->recv_server, port)) == NULL)
 389 #endif
 390                         return NULL;
 391         }
 392
 393         /* Only need to log in if the connection was not PREAUTH */
 394         imap_greeting(imap_sock, &is_preauth);
 395         log_message("IMAP connection is %s-authenticated\n",
 396                     (is_preauth) ? "pre" : "un");
 397         if (!is_preauth) {
 398                 g_return_val_if_fail(account->userid != NULL, NULL);
 399
 400                 pass = account->passwd;
 401                 if (!pass) {
 402                         gchar *tmp_pass;
 403                         tmp_pass = input_dialog_query_password(account->recv_server, account->userid);
 404                         if (!tmp_pass)
 405                                 return NULL;
 406                         Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 407                         g_free(tmp_pass);
 408                 }
 409
 410                 if (imap_cmd_login(imap_sock, account->userid, pass) != IMAP_SUCCESS) {
 411                         imap_cmd_logout(imap_sock);
 412                         sock_close(imap_sock);
 413                         return NULL;
 414                 }
 415         }
 416
 417         session = g_new(IMAPSession, 1);
 418         SESSION(session)->type             = SESSION_IMAP;
 419         SESSION(session)->server           = g_strdup(account->recv_server);
 420         SESSION(session)->sock             = imap_sock;
 421         SESSION(session)->connected        = TRUE;
 422         SESSION(session)->phase            = SESSION_READY;
 423         SESSION(session)->last_access_time = time(NULL);
 424         SESSION(session)->data             = NULL;
 425         session->mbox = NULL;
 426
 427         session_list = g_list_append(session_list, session);
 428
 429         return SESSION(session);
 430 }
 431
 432 void imap_session_destroy(IMAPSession *session)
 433 {
 434         sock_close(SESSION(session)->sock);
 435         SESSION(session)->sock = NULL;
 436
 437         g_free(session->mbox);
 438
 439         session_list = g_list_remove(session_list, session);
 440 }
 441
 442 void imap_session_destroy_all(void)
 443 {
 444         while (session_list != NULL) {
 445                 IMAPSession *session = (IMAPSession *)session_list->data;
 446
 447                 imap_cmd_logout(SESSION(session)->sock);
 448                 imap_session_destroy(session);
 449         }
 450 }
 451
 452 #define THROW goto catch
 453
 454 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 455 {
 456         GSList *mlist = NULL;
 457         IMAPSession *session;
 458         gint ok, exists = 0, recent = 0, unseen = 0;
 459         guint32 uid_validity = 0;
 460         guint32 first_uid = 0, last_uid = 0, begin;
 461
 462         g_return_val_if_fail(folder != NULL, NULL);
 463         g_return_val_if_fail(item != NULL, NULL);
 464         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 465         g_return_val_if_fail(folder->account != NULL, NULL);
 466
 467         session = imap_session_get(folder);
 468
 469         if (!session) {
 470                 mlist = procmsg_read_cache(item, FALSE);
 471                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 472                 procmsg_set_flags(mlist, item);
 473                 statusbar_pop_all();
 474                 return mlist;
 475         }
 476
 477         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 478                          &exists, &recent, &unseen, &uid_validity);
 479         if (ok != IMAP_SUCCESS) THROW;
 480         if (exists > 0) {
 481                 ok = imap_get_uid(session, 1, &first_uid);
 482                 if (ok != IMAP_SUCCESS) THROW;
 483                 if (1 != exists) {
 484                         ok = imap_get_uid(session, exists, &last_uid);
 485                         if (ok != IMAP_SUCCESS) THROW;
 486                 } else
 487                         last_uid = first_uid;
 488         } else {
 489                 imap_delete_all_cached_messages(item);
 490                 statusbar_pop_all();
 491                 return NULL;
 492         }
 493
 494         if (use_cache) {
 495                 guint32 cache_last;
 496
 497                 mlist = procmsg_read_cache(item, FALSE);
 498                 procmsg_set_flags(mlist, item);
 499                 cache_last = procmsg_get_last_num_in_cache(mlist);
 500
 501                 /* calculating the range of envelope to get */
 502                 if (item->mtime != uid_validity) {
 503                         /* mailbox is changed (get all) */
 504                         begin = first_uid;
 505                 } else if (last_uid < cache_last) {
 506                         /* mailbox is changed (get all) */
 507                         begin = first_uid;
 508                 } else if (last_uid == cache_last) {
 509                         /* mailbox unchanged (get none)*/
 510                         begin = 0;
 511                 } else {
 512                         begin = cache_last + 1;
 513                 }
 514
 515                 item->mtime = uid_validity;
 516
 517                 if (first_uid > 0 && last_uid > 0) {
 518                         mlist = imap_delete_cached_messages(mlist, item,
 519                                                             0, first_uid - 1);
 520                         mlist = imap_delete_cached_messages(mlist, item,
 521                                                             last_uid + 1,
 522                                                             UINT_MAX);
 523                 }
 524                 if (begin > 0)
 525                         mlist = imap_delete_cached_messages(mlist, item,
 526                                                             begin, UINT_MAX);
 527         } else {
 528                 imap_delete_all_cached_messages(item);
 529                 begin = first_uid;
 530         }
 531
 532         if (begin > 0 && begin <= last_uid) {
 533                 GSList *newlist;
 534                 newlist = imap_get_uncached_messages(session, item,
 535                                                      begin, last_uid);
 536                 mlist = g_slist_concat(mlist, newlist);
 537         }
 538
 539         item->last_num = last_uid;
 540
 541 catch:
 542         statusbar_pop_all();
 543         return mlist;
 544 }
 545
 546 #undef THROW
 547
 548 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 549 {
 550         gchar *path, *filename;
 551         IMAPSession *session;
 552         gint ok;
 553
 554         g_return_val_if_fail(folder != NULL, NULL);
 555         g_return_val_if_fail(item != NULL, NULL);
 556
 557         path = folder_item_get_path(item);
 558         if (!is_dir_exist(path))
 559                 make_dir_hier(path);
 560         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 561         g_free(path);
 562
 563         if (is_file_exist(filename)) {
 564                 debug_print(_("message %d has been already cached.\n"), uid);
 565                 return filename;
 566         }
 567
 568         session = imap_session_get(folder);
 569         if (!session) {
 570                 g_free(filename);
 571                 return NULL;
 572         }
 573
 574         debug_print(_("getting message %d...\n"), uid);
 575         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 576
 577         statusbar_pop_all();
 578
 579         if (ok != IMAP_SUCCESS) {
 580                 g_warning(_("can't fetch message %d\n"), uid);
 581                 g_free(filename);
 582                 return NULL;
 583         }
 584
 585         return filename;
 586 }
 587
 588 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 589                   gboolean remove_source)
 590 {
 591         gchar *destdir;
 592         IMAPSession *session;
 593         gint ok;
 594
 595         g_return_val_if_fail(folder != NULL, -1);
 596         g_return_val_if_fail(dest != NULL, -1);
 597         g_return_val_if_fail(file != NULL, -1);
 598
 599         session = imap_session_get(folder);
 600         if (!session) return -1;
 601
 602         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 603         ok = imap_cmd_append(SESSION(session)->sock, destdir, file);
 604         g_free(destdir);
 605
 606         if (ok != IMAP_SUCCESS) {
 607                 g_warning(_("can't append message %s\n"), file);
 608                 return -1;
 609         }
 610
 611         if (remove_source) {
 612                 if (unlink(file) < 0)
 613                         FILE_OP_ERROR(file, "unlink");
 614         }
 615
 616         return 0;
 617 }
 618
 619 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 620                          gboolean remove_source)
 621 {
 622         gchar *destdir;
 623         IMAPSession *session;
 624         gint ok;
 625
 626         g_return_val_if_fail(folder != NULL, -1);
 627         g_return_val_if_fail(folder->type == F_IMAP, -1);
 628         g_return_val_if_fail(dest != NULL, -1);
 629         g_return_val_if_fail(msginfo != NULL, -1);
 630
 631         session = imap_session_get(folder);
 632         if (!session) return -1;
 633
 634         if (msginfo->folder == dest) {
 635                 g_warning(_("the src folder is identical to the dest.\n"));
 636                 return -1;
 637         }
 638
 639         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 640
 641         if (remove_source)
 642                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 643                             msginfo->folder->path, G_DIR_SEPARATOR,
 644                             msginfo->msgnum, destdir);
 645         else
 646                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 647                             msginfo->folder->path, G_DIR_SEPARATOR,
 648                             msginfo->msgnum, destdir);
 649
 650         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 651
 652         if (ok == IMAP_SUCCESS && remove_source) {
 653                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 654                                        IMAP_FLAG_DELETED, TRUE);
 655                 ok = imap_cmd_expunge(SESSION(session)->sock);
 656         }
 657
 658         g_free(destdir);
 659         statusbar_pop_all();
 660
 661         if (ok == IMAP_SUCCESS)
 662                 return 0;
 663         else
 664                 return -1;
 665 }
 666
 667 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 668                                         GSList *msglist,
 669                                         gboolean remove_source)
 670 {
 671         gchar *destdir;
 672         GSList *cur;
 673         MsgInfo *msginfo;
 674         IMAPSession *session;
 675         gint ok = IMAP_SUCCESS;
 676
 677         g_return_val_if_fail(folder != NULL, -1);
 678         g_return_val_if_fail(dest != NULL, -1);
 679         g_return_val_if_fail(msglist != NULL, -1);
 680
 681         session = imap_session_get(folder);
 682         if (!session) return -1;
 683
 684         destdir = imap_get_real_path(IMAP_FOLDER(folder), dest->path);
 685
 686         for (cur = msglist; cur != NULL; cur = cur->next) {
 687                 msginfo = (MsgInfo *)cur->data;
 688
 689                 if (msginfo->folder == dest) {
 690                         g_warning(_("the src folder is identical to the dest.\n"));
 691                         continue;
 692                 }
 693
 694                 if (remove_source)
 695                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 696                                     msginfo->folder->path, G_DIR_SEPARATOR,
 697                                     msginfo->msgnum, destdir);
 698                 else
 699                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 700                                     msginfo->folder->path, G_DIR_SEPARATOR,
 701                                     msginfo->msgnum, destdir);
 702
 703                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 704                                    destdir);
 705
 706                 if (ok == IMAP_SUCCESS && remove_source) {
 707                         imap_set_message_flags
 708                                 (session, msginfo->msgnum, msginfo->msgnum,
 709                                  IMAP_FLAG_DELETED, TRUE);
 710                 }
 711         }
 712
 713         if (remove_source)
 714                 ok = imap_cmd_expunge(SESSION(session)->sock);
 715
 716         g_free(destdir);
 717         statusbar_pop_all();
 718
 719         if (ok == IMAP_SUCCESS)
 720                 return 0;
 721         else
 722                 return -1;
 723 }
 724
 725 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 726 {
 727         return imap_do_copy(folder, dest, msginfo, TRUE);
 728 }
 729
 730 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 731                               GSList *msglist)
 732 {
 733         return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 734 }
 735
 736 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 737 {
 738         gchar *srcfile;
 739         gint ret = 0;
 740
 741         g_return_val_if_fail(folder != NULL, -1);
 742         g_return_val_if_fail(dest != NULL, -1);
 743         g_return_val_if_fail(msginfo != NULL, -1);
 744         g_return_val_if_fail(msginfo->folder != NULL, -1);
 745
 746         if (folder == msginfo->folder->folder)
 747                 return imap_do_copy(folder, dest, msginfo, FALSE);
 748
 749         srcfile = procmsg_get_message_file(msginfo);
 750         if (!srcfile) return -1;
 751
 752         ret = imap_add_msg(folder, dest, srcfile, FALSE);
 753
 754         g_free(srcfile);
 755
 756         return ret;
 757 }
 758
 759 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 760                               GSList *msglist)
 761 {
 762         MsgInfo *msginfo;
 763         GSList *cur;
 764         gint ret = 0;
 765
 766         g_return_val_if_fail(folder != NULL, -1);
 767         g_return_val_if_fail(dest != NULL, -1);
 768         g_return_val_if_fail(msglist != NULL, -1);
 769
 770         msginfo = (MsgInfo *)msglist->data;
 771         if (folder == msginfo->folder->folder)
 772                 return imap_do_copy_msgs_with_dest
 773                         (folder, dest, msglist, FALSE);
 774
 775         for (cur = msglist; cur != NULL; cur = cur->next) {
 776                 msginfo = (MsgInfo *)cur->data;
 777                 ret = imap_copy_msg(folder, dest, msginfo);
 778                 if (ret != 0) break;
 779         }
 780
 781         return ret;
 782 }
 783
 784 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 785 {
 786         gint exists, recent, unseen;
 787         guint32 uid_validity;
 788         gint ok;
 789         IMAPSession *session;
 790
 791         g_return_val_if_fail(folder != NULL, -1);
 792         g_return_val_if_fail(folder->type == F_IMAP, -1);
 793         g_return_val_if_fail(item != NULL, -1);
 794
 795         session = imap_session_get(folder);
 796         if (!session) return -1;
 797
 798         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 799                          &exists, &recent, &unseen, &uid_validity);
 800         statusbar_pop_all();
 801         if (ok != IMAP_SUCCESS)
 802                 return ok;
 803
 804         ok = imap_set_message_flags
 805                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 806                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 807         statusbar_pop_all();
 808         if (ok != IMAP_SUCCESS) {
 809                 log_warning(_("can't set deleted flags: %d\n"), uid);
 810                 return ok;
 811         }
 812
 813         ok = imap_cmd_expunge(SESSION(session)->sock);
 814         statusbar_pop_all();
 815         if (ok != IMAP_SUCCESS) {
 816                 log_warning(_("can't expunge\n"));
 817                 return ok;
 818         }
 819
 820         return IMAP_SUCCESS;
 821 }
 822
 823 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 824 {
 825         gint exists, recent, unseen;
 826         guint32 uid_validity;
 827         gint ok;
 828         IMAPSession *session;
 829
 830         g_return_val_if_fail(folder != NULL, -1);
 831         g_return_val_if_fail(item != NULL, -1);
 832
 833         session = imap_session_get(folder);
 834         if (!session) return -1;
 835
 836         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 837                          &exists, &recent, &unseen, &uid_validity);
 838         statusbar_pop_all();
 839         if (ok != IMAP_SUCCESS)
 840                 return ok;
 841         if (exists == 0)
 842                 return IMAP_SUCCESS;
 843
 844         imap_cmd_gen_send(SESSION(session)->sock,
 845                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 846         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 847         statusbar_pop_all();
 848         if (ok != IMAP_SUCCESS) {
 849                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 850                 return ok;
 851         }
 852
 853         ok = imap_cmd_expunge(SESSION(session)->sock);
 854         statusbar_pop_all();
 855         if (ok != IMAP_SUCCESS) {
 856                 log_warning(_("can't expunge\n"));
 857                 return ok;
 858         }
 859
 860         return IMAP_SUCCESS;
 861 }
 862
 863 void imap_scan_folder(Folder *folder, FolderItem *item)
 864 {
 865         IMAPSession *session;
 866         gint messages, recent, unseen;
 867         guint32 uid_validity;
 868         gint ok;
 869
 870         g_return_if_fail(folder != NULL);
 871         g_return_if_fail(item != NULL);
 872
 873         session = imap_session_get(folder);
 874         if (!session) return;
 875
 876         ok = imap_status(session, IMAP_FOLDER(folder), item->path,
 877                          &messages, &recent, &unseen, &uid_validity);
 878         statusbar_pop_all();
 879         if (ok != IMAP_SUCCESS) return;
 880
 881         item->new = recent;
 882         item->unread = unseen;
 883         item->total = messages;
 884         /* item->mtime = uid_validity; */
 885 }
 886
 887 void imap_scan_tree(Folder *folder)
 888 {
 889         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 890         FolderItem *item, *inbox;
 891         IMAPSession *session;
 892         IMAPNameSpace *namespace = NULL;
 893         gchar *root_folder = NULL;
 894
 895         g_return_if_fail(folder != NULL);
 896         g_return_if_fail(folder->account != NULL);
 897
 898         session = imap_session_get(folder);
 899         if (!session) return;
 900
 901         if (imapfolder->namespace && imapfolder->namespace->data)
 902                 namespace = (IMAPNameSpace *)imapfolder->namespace->data;
 903
 904         if (folder->account->imap_dir && *folder->account->imap_dir) {
 905                 gchar *imap_dir;
 906                 Xstrdup_a(imap_dir, folder->account->imap_dir, return);
 907                 strtailchomp(imap_dir, '/');
 908                 root_folder = g_strconcat
 909                         (namespace && namespace->name ? namespace->name : "",
 910                          imap_dir, NULL);
 911                 if (namespace && namespace->separator)
 912                         subst_char(root_folder, namespace->separator, '/');
 913         }
 914
 915         if (root_folder)
 916                 debug_print("IMAP root directory: %s\n", root_folder);
 917
 918         folder_tree_destroy(folder);
 919         item = folder_item_new(folder->name, root_folder);
 920         item->folder = folder;
 921         folder->node = g_node_new(item);
 922         g_free(root_folder);
 923
 924         imap_scan_tree_recursive(session, item, namespace);
 925
 926         if (!folder->inbox) {
 927                 inbox = folder_item_new("INBOX", "INBOX");
 928                 inbox->stype = F_INBOX;
 929                 folder_item_append(item, inbox);
 930                 folder->inbox = inbox;
 931         }
 932         if (!folder->trash)
 933                 imap_create_trash(folder);
 934 }
 935
 936 static gint imap_scan_tree_recursive(IMAPSession *session, FolderItem *item,
 937                                      IMAPNameSpace *namespace)
 938 {
 939         IMAPFolder *imapfolder;
 940         FolderItem *new_item;
 941         GSList *item_list, *cur;
 942         gchar *real_path;
 943         gchar *wildcard_path;
 944         gchar separator = '/';
 945         gchar wildcard[3];
 946
 947         g_return_val_if_fail(item != NULL, -1);
 948         g_return_val_if_fail(item->folder != NULL, -1);
 949         g_return_val_if_fail(item->no_sub == FALSE, -1);
 950
 951         imapfolder = IMAP_FOLDER(item->folder);
 952
 953         if (namespace && namespace->separator)
 954                 separator = namespace->separator;
 955
 956         if (item->folder->ui_func)
 957                 item->folder->ui_func(item->folder, item,
 958                                       item->folder->ui_func_data);
 959
 960         if (item->path) {
 961                 wildcard[0] = separator;
 962                 wildcard[1] = '%';
 963                 wildcard[2] = '\0';
 964                 real_path = imap_get_real_path(imapfolder, item->path);
 965         } else {
 966                 wildcard[0] = '%';
 967                 wildcard[1] = '\0';
 968                 real_path = g_strdup(namespace && namespace->name
 969                                      ? namespace->name : "");
 970         }
 971
 972         Xstrcat_a(wildcard_path, real_path, wildcard,
 973                   {g_free(real_path); return IMAP_ERROR;});
 974         QUOTE_IF_REQUIRED(wildcard_path, wildcard_path);
 975
 976         imap_cmd_gen_send(SESSION(session)->sock, "LIST \"\" %s",
 977                           wildcard_path);
 978
 979         strtailchomp(real_path, separator);
 980         item_list = imap_parse_list(session, real_path);
 981         g_free(real_path);
 982
 983         for (cur = item_list; cur != NULL; cur = cur->next) {
 984                 new_item = cur->data;
 985                 if (!strcmp(new_item->path, "INBOX")) {
 986                         if (!item->folder->inbox) {
 987                                 new_item->stype = F_INBOX;
 988                                 item->folder->inbox = new_item;
 989                         } else {
 990                                 folder_item_destroy(new_item);
 991                                 continue;
 992                         }
 993                 } else if (!item->parent && !item->folder->trash) {
 994                         if (!strcasecmp(g_basename(new_item->path), "Trash")) {
 995                                 new_item->stype = F_TRASH;
 996                                 item->folder->trash = new_item;
 997                         }
 998                 }
 999                 folder_item_append(item, new_item);
1000                 if (new_item->no_select == FALSE)
1001                         imap_scan_folder(new_item->folder, new_item);
1002                 if (new_item->no_sub == FALSE)
1003                         imap_scan_tree_recursive(session, new_item, namespace);
1004         }
1005
1006         return IMAP_SUCCESS;
1007 }
1008
1009 static GSList *imap_parse_list(IMAPSession *session, const gchar *path)
1010 {
1011         gchar buf[IMAPBUFSIZE];
1012         gchar flags[256];
1013         gchar separator[16];
1014         gchar *p;
1015         gchar *name;
1016         GSList *item_list = NULL;
1017         GString *str;
1018         FolderItem *new_item;
1019
1020         debug_print("getting list of %s ...\n", *path ? path : "\"\"");
1021
1022         str = g_string_new(NULL);
1023
1024         for (;;) {
1025                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) <= 0) {
1026                         log_warning(_("error occured while getting LIST.\n"));
1027                         break;
1028                 }
1029                 strretchomp(buf);
1030                 if (buf[0] != '*' || buf[1] != ' ') {
1031                         log_print("IMAP4< %s\n", buf);
1032                         break;
1033                 }
1034                 debug_print("IMAP4< %s\n", buf);
1035
1036                 g_string_assign(str, buf);
1037                 p = str->str + 2;
1038                 if (strncmp(p, "LIST ", 5) != 0) continue;
1039                 p += 5;
1040
1041                 if (*p != '(') continue;
1042                 p++;
1043                 p = strchr_cpy(p, ')', flags, sizeof(flags));
1044                 if (!p) continue;
1045                 while (*p == ' ') p++;
1046
1047                 p = strchr_cpy(p, ' ', separator, sizeof(separator));
1048                 if (!p) continue;
1049                 extract_quote(separator, '"');
1050                 if (!strcmp(separator, "NIL"))
1051                         separator[0] = '\0';
1052
1053                 buf[0] = '\0';
1054                 while (*p == ' ') p++;
1055                 if (*p == '{' || *p == '"')
1056                         p = imap_parse_atom(SESSION(session)->sock, p,
1057                                             buf, sizeof(buf), str);
1058                 else
1059                         strncpy2(buf, p, sizeof(buf));
1060                 strtailchomp(buf, separator[0]);
1061                 if (buf[0] == '\0') continue;
1062                 if (!strcmp(buf, path)) continue;
1063
1064                 if (separator[0] != '\0')
1065                         subst_char(buf, separator[0], '/');
1066                 name = g_basename(buf);
1067                 if (name[0] == '.') continue;
1068
1069                 new_item = folder_item_new(name, buf);
1070                 if (strcasestr(flags, "\\Noinferiors") != NULL)
1071                         new_item->no_sub = TRUE;
1072                 if (strcasestr(flags, "\\Noselect") != NULL)
1073                         new_item->no_select = TRUE;
1074
1075                 item_list = g_slist_append(item_list, new_item);
1076
1077                 debug_print("folder %s has been added.\n", buf);
1078         }
1079
1080         g_string_free(str, TRUE);
1081         statusbar_pop_all();
1082
1083         return item_list;
1084 }
1085
1086 gint imap_create_tree(Folder *folder)
1087 {
1088         FolderItem *item;
1089
1090         g_return_val_if_fail(folder != NULL, -1);
1091         g_return_val_if_fail(folder->node != NULL, -1);
1092         g_return_val_if_fail(folder->node->data != NULL, -1);
1093         g_return_val_if_fail(folder->account != NULL, -1);
1094
1095         imap_scan_tree(folder);
1096
1097         item = FOLDER_ITEM(folder->node->data);
1098
1099         if (!folder->inbox) {
1100                 FolderItem *inbox;
1101
1102                 inbox = folder_item_new("INBOX", "INBOX");
1103                 inbox->stype = F_INBOX;
1104                 folder_item_append(item, inbox);
1105                 folder->inbox = inbox;
1106         }
1107         if (!folder->trash)
1108                 imap_create_trash(folder);
1109
1110         return 0;
1111 }
1112
1113 static gint imap_create_trash(Folder *folder)
1114 {
1115         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
1116         FolderItem *item;
1117         FolderItem *new_item;
1118         gchar *trash_path;
1119         gchar *imap_dir = "";
1120
1121         g_return_val_if_fail(folder != NULL, -1);
1122         g_return_val_if_fail(folder->node != NULL, -1);
1123         g_return_val_if_fail(folder->node->data != NULL, -1);
1124         g_return_val_if_fail(folder->account != NULL, -1);
1125
1126         if (folder->account->imap_dir && *folder->account->imap_dir) {
1127                 gchar *tmpdir;
1128
1129                 Xstrdup_a(tmpdir, folder->account->imap_dir, return -1);
1130                 strtailchomp(tmpdir, '/');
1131                 Xalloca(imap_dir, strlen(tmpdir) + 2, return -1);
1132                 g_snprintf(imap_dir, strlen(tmpdir) + 2, "%s%c", tmpdir, '/');
1133         }
1134
1135         if (imapfolder->namespace && imapfolder->namespace->data) {
1136                 IMAPNameSpace *namespace =
1137                         (IMAPNameSpace *)imapfolder->namespace->data;
1138
1139                 if (*namespace->name != '\0') {
1140                         gchar *name;
1141
1142                         Xstrdup_a(name, namespace->name, return -1);
1143                         subst_char(name, namespace->separator, '/');
1144                         trash_path = g_strconcat(name, imap_dir, "Trash", NULL);
1145                 } else
1146                         trash_path = g_strconcat(imap_dir, "Trash", NULL);
1147         } else
1148                 trash_path = g_strconcat(imap_dir, "Trash", NULL);
1149
1150         item = FOLDER_ITEM(folder->node->data);
1151         new_item = imap_create_folder(folder, item, trash_path);
1152
1153         if (!new_item) {
1154                 gchar *path;
1155
1156                 new_item = folder_item_new("Trash", trash_path);
1157                 folder_item_append(item, new_item);
1158
1159                 path = folder_item_get_path(new_item);
1160                 if (!is_dir_exist(path))
1161                         make_dir_hier(path);
1162                 g_free(path);
1163         } else {
1164                 g_free(new_item->name);
1165                 new_item->name = g_strdup("Trash");
1166         }
1167         new_item->stype = F_TRASH;
1168         folder->trash = new_item;
1169
1170         g_free(trash_path);
1171
1172         return 0;
1173 }
1174
1175 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
1176                                const gchar *name)
1177 {
1178         gchar *dirpath, *imappath;
1179         IMAPSession *session;
1180         IMAPNameSpace *namespace;
1181         FolderItem *new_item;
1182         gchar *new_name;
1183         const gchar *p;
1184         gint ok;
1185
1186         g_return_val_if_fail(folder != NULL, NULL);
1187         g_return_val_if_fail(folder->account != NULL, NULL);
1188         g_return_val_if_fail(parent != NULL, NULL);
1189         g_return_val_if_fail(name != NULL, NULL);
1190
1191         session = imap_session_get(folder);
1192         if (!session) return NULL;
1193
1194         if (parent->path)
1195                 dirpath = g_strconcat(parent->path, "/", name, NULL);
1196         else if ((p = strchr(name, '/')) != NULL && *(p + 1) != '\0')
1197                 dirpath = g_strdup(name);
1198         else if (folder->account->imap_dir && *folder->account->imap_dir) {
1199                 gchar *imap_dir;
1200
1201                 Xstrdup_a(imap_dir, folder->account->imap_dir, return NULL);
1202                 strtailchomp(imap_dir, '/');
1203                 dirpath = g_strconcat(imap_dir, "/", name, NULL);
1204         } else
1205                 dirpath = g_strdup(name);
1206
1207         Xstrdup_a(imappath, dirpath, {g_free(dirpath); return NULL;});
1208         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
1209         namespace = imap_find_namespace(IMAP_FOLDER(folder), imappath);
1210         if (namespace && namespace->separator) {
1211                 imap_path_separator_subst(imappath, namespace->separator);
1212                 imap_path_separator_subst(new_name, namespace->separator);
1213                 strtailchomp(new_name, namespace->separator);
1214         }
1215         strtailchomp(dirpath, '/');
1216
1217         if (strcmp(name, "INBOX") != 0) {
1218                 GPtrArray *argbuf;
1219                 gint i;
1220                 gboolean exist = FALSE;
1221
1222                 argbuf = g_ptr_array_new();
1223                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imappath,
1224                                    argbuf);
1225                 statusbar_pop_all();
1226                 if (ok != IMAP_SUCCESS) {
1227                         log_warning(_("can't create mailbox: LIST failed\n"));
1228                         g_free(dirpath);
1229                         g_ptr_array_free(argbuf, TRUE);
1230                         return NULL;
1231                 }
1232
1233                 for (i = 0; i < argbuf->len; i++) {
1234                         gchar *str;
1235                         str = g_ptr_array_index(argbuf, i);
1236                         if (!strncmp(str, "LIST ", 5)) {
1237                                 exist = TRUE;
1238                                 break;
1239                         }
1240                 }
1241                 g_ptr_array_free(argbuf, TRUE);
1242
1243                 if (!exist) {
1244                         ok = imap_cmd_create(SESSION(session)->sock, imappath);
1245                         statusbar_pop_all();
1246                         if (ok != IMAP_SUCCESS) {
1247                                 log_warning(_("can't create mailbox\n"));
1248                                 g_free(dirpath);
1249                                 return NULL;
1250                         }
1251                 }
1252         }
1253
1254         new_item = folder_item_new(new_name, dirpath);
1255         folder_item_append(parent, new_item);
1256         g_free(dirpath);
1257
1258         dirpath = folder_item_get_path(new_item);
1259         if (!is_dir_exist(dirpath))
1260                 make_dir_hier(dirpath);
1261         g_free(dirpath);
1262
1263         return new_item;
1264 }
1265
1266 gint imap_remove_folder(Folder *folder, FolderItem *item)
1267 {
1268         gint ok;
1269         IMAPSession *session;
1270         gchar *path;
1271         gint exists, recent, unseen;
1272         guint32 uid_validity;
1273
1274         g_return_val_if_fail(folder != NULL, -1);
1275         g_return_val_if_fail(item != NULL, -1);
1276         g_return_val_if_fail(item->path != NULL, -1);
1277
1278         session = imap_session_get(folder);
1279         if (!session) return -1;
1280
1281         path = imap_get_real_path(IMAP_FOLDER(folder), item->path);
1282
1283         ok = imap_cmd_examine(SESSION(session)->sock, "INBOX",
1284                               &exists, &recent, &unseen, &uid_validity);
1285         statusbar_pop_all();
1286         if (ok != IMAP_SUCCESS) {
1287                 g_free(path);
1288                 return -1;
1289         }
1290
1291         ok = imap_cmd_delete(SESSION(session)->sock, path);
1292         statusbar_pop_all();
1293         if (ok != IMAP_SUCCESS) {
1294                 log_warning(_("can't delete mailbox\n"));
1295                 g_free(path);
1296                 return -1;
1297         }
1298
1299         g_free(path);
1300         folder_item_remove(item);
1301
1302         return 0;
1303 }
1304
1305 static GSList *imap_get_uncached_messages(IMAPSession *session,
1306                                           FolderItem *item,
1307                                           guint32 first_uid, guint32 last_uid)
1308 {
1309         gchar *tmp;
1310         GSList *newlist = NULL;
1311         GSList *llast = NULL;
1312         GString *str;
1313         MsgInfo *msginfo;
1314
1315         g_return_val_if_fail(session != NULL, NULL);
1316         g_return_val_if_fail(item != NULL, NULL);
1317         g_return_val_if_fail(item->folder != NULL, NULL);
1318         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
1319         g_return_val_if_fail(first_uid <= last_uid, NULL);
1320
1321         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
1322             != IMAP_SUCCESS) {
1323                 log_warning(_("can't get envelope\n"));
1324                 return NULL;
1325         }
1326
1327         str = g_string_new(NULL);
1328
1329         for (;;) {
1330                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
1331                         log_warning(_("error occurred while getting envelope.\n"));
1332                         g_string_free(str, TRUE);
1333                         return newlist;
1334                 }
1335                 strretchomp(tmp);
1336                 log_print("IMAP4< %s\n", tmp);
1337                 if (tmp[0] != '*' || tmp[1] != ' ') {
1338                         g_free(tmp);
1339                         break;
1340                 }
1341                 g_string_assign(str, tmp);
1342                 g_free(tmp);
1343
1344                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
1345                 if (!msginfo) {
1346                         log_warning(_("can't parse envelope: %s\n"), str->str);
1347                         continue;
1348                 }
1349
1350                 msginfo->folder = item;
1351
1352                 if (!newlist)
1353                         llast = newlist = g_slist_append(newlist, msginfo);
1354                 else {
1355                         llast = g_slist_append(llast, msginfo);
1356                         llast = llast->next;
1357                 }
1358         }
1359
1360         g_string_free(str, TRUE);
1361
1362         return newlist;
1363 }
1364
1365 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
1366                                            guint32 first_uid, guint32 last_uid)
1367 {
1368         GSList *cur, *next;
1369         MsgInfo *msginfo;
1370         gchar *dir;
1371
1372         g_return_val_if_fail(item != NULL, mlist);
1373         g_return_val_if_fail(item->folder != NULL, mlist);
1374         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
1375
1376         debug_print(_("Deleting cached messages %d - %d ... "),
1377                     first_uid, last_uid);
1378
1379         dir = folder_item_get_path(item);
1380         remove_numbered_files(dir, first_uid, last_uid);
1381         g_free(dir);
1382
1383         for (cur = mlist; cur != NULL; ) {
1384                 next = cur->next;
1385
1386                 msginfo = (MsgInfo *)cur->data;
1387                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
1388                     msginfo->msgnum <= last_uid) {
1389                         procmsg_msginfo_free(msginfo);
1390                         mlist = g_slist_remove(mlist, msginfo);
1391                 }
1392
1393                 cur = next;
1394         }
1395
1396         debug_print(_("done.\n"));
1397
1398         return mlist;
1399 }
1400
1401 static void imap_delete_all_cached_messages(FolderItem *item)
1402 {
1403         gchar *dir;
1404
1405         g_return_if_fail(item != NULL);
1406         g_return_if_fail(item->folder != NULL);
1407         g_return_if_fail(item->folder->type == F_IMAP);
1408
1409         debug_print(_("Deleting all cached messages... "));
1410
1411         dir = folder_item_get_path(item);
1412         remove_all_numbered_files(dir);
1413         g_free(dir);
1414
1415         debug_print(_("done.\n"));
1416 }
1417
1418
1419 static SockInfo *imap_open_tunnel(const gchar *server,
1420                            const gchar *tunnelcmd)
1421 {
1422         SockInfo *sock;
1423
1424         if ((sock = sock_connect_cmd(server, tunnelcmd)) == NULL)
1425                 return NULL;
1426
1427         return imap_init_sock(sock);
1428 }
1429
1430
1431 #if USE_SSL
1432 static SockInfo *imap_open(const gchar *server, gushort port,
1433                            gboolean use_ssl)
1434 #else
1435 static SockInfo *imap_open(const gchar *server, gushort port)
1436 #endif
1437 {
1438         SockInfo *sock;
1439
1440         if ((sock = sock_connect(server, port)) == NULL) {
1441                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
1442                             server, port);
1443                 return NULL;
1444         }
1445
1446 #if USE_SSL
1447         if (use_ssl && !ssl_init_socket(sock)) {
1448                 sock_close(sock);
1449                 return NULL;
1450         }
1451 #endif
1452
1453         return imap_init_sock(sock);
1454 }
1455
1456
1457 static SockInfo *imap_init_sock(SockInfo *sock)
1458 {
1459         imap_cmd_count = 0;
1460
1461         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
1462                 sock_close(sock);
1463                 return NULL;
1464         }
1465
1466         return sock;
1467 }
1468
1469
1470
1471 #define THROW goto catch
1472
1473 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
1474 {
1475         gchar *ns_str;
1476         gchar *name;
1477         gchar *separator;
1478         gchar *p;
1479         IMAPNameSpace *namespace;
1480         GList *ns_list = NULL;
1481
1482         g_return_if_fail(session != NULL);
1483         g_return_if_fail(folder != NULL);
1484
1485         if (folder->namespace != NULL) return;
1486
1487         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
1488             != IMAP_SUCCESS) {
1489                 log_warning(_("can't get namespace\n"));
1490                 return;
1491         }
1492
1493         /* get the first element */
1494         extract_one_parenthesis_with_skip_quote(ns_str, '"', '(', ')');
1495         g_strstrip(ns_str);
1496         p = ns_str;
1497
1498         while (*p != '\0') {
1499                 /* parse ("#foo" "/") */
1500
1501                 while (*p && *p != '(') p++;
1502                 if (*p == '\0') THROW;
1503                 p++;
1504
1505                 while (*p && *p != '"') p++;
1506                 if (*p == '\0') THROW;
1507                 p++;
1508                 name = p;
1509
1510                 while (*p && *p != '"') p++;
1511                 if (*p == '\0') THROW;
1512                 *p = '\0';
1513                 p++;
1514
1515                 while (*p && isspace(*p)) p++;
1516                 if (*p == '\0') THROW;
1517                 if (strncmp(p, "NIL", 3) == 0)
1518                         separator = NULL;
1519                 else if (*p == '"') {
1520                         p++;
1521                         separator = p;
1522                         while (*p && *p != '"') p++;
1523                         if (*p == '\0') THROW;
1524                         *p = '\0';
1525                         p++;
1526                 } else THROW;
1527
1528                 while (*p && *p != ')') p++;
1529                 if (*p == '\0') THROW;
1530                 p++;
1531
1532                 namespace = g_new(IMAPNameSpace, 1);
1533                 namespace->name = g_strdup(name);
1534                 namespace->separator = separator ? separator[0] : '\0';
1535                 ns_list = g_list_append(ns_list, namespace);
1536                 IMAP_FOLDER(folder)->namespace = ns_list;
1537         }
1538
1539 catch:
1540         g_free(ns_str);
1541         return;
1542 }
1543
1544 #undef THROW
1545
1546 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1547                                           const gchar *path)
1548 {
1549         IMAPNameSpace *namespace = NULL;
1550         GList *ns_list;
1551         gchar *name;
1552
1553         g_return_val_if_fail(folder != NULL, NULL);
1554         g_return_val_if_fail(path != NULL, NULL);
1555
1556         ns_list = folder->namespace;
1557
1558         for (; ns_list != NULL; ns_list = ns_list->next) {
1559                 IMAPNameSpace *tmp_ns = ns_list->data;
1560
1561                 Xstrdup_a(name, tmp_ns->name, return namespace);
1562                 if (tmp_ns->separator && tmp_ns->separator != '/')
1563                         subst_char(name, tmp_ns->separator, '/');
1564                 if (strncmp(path, name, strlen(name)) == 0)
1565                         namespace = tmp_ns;
1566         }
1567
1568         return namespace;
1569 }
1570
1571 static gchar *imap_get_real_path(IMAPFolder *folder, const gchar *path)
1572 {
1573         gchar *real_path;
1574         IMAPNameSpace *namespace;
1575
1576         g_return_val_if_fail(folder != NULL, NULL);
1577         g_return_val_if_fail(path != NULL, NULL);
1578
1579         real_path = g_strdup(path);
1580         namespace = imap_find_namespace(folder, path);
1581         if (namespace && namespace->separator)
1582                 imap_path_separator_subst(real_path, namespace->separator);
1583
1584         return real_path;
1585 }
1586
1587 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1588                               gchar *dest, gint dest_len, GString *str)
1589 {
1590         gchar *cur_pos = src;
1591
1592         g_return_val_if_fail(str != NULL, cur_pos);
1593
1594         while (*cur_pos == ' ') cur_pos++;
1595
1596         if (!strncmp(cur_pos, "NIL", 3)) {
1597                 *dest = '\0';
1598                 cur_pos += 3;
1599         } else if (*cur_pos == '\"') {
1600                 gchar *p;
1601
1602                 p = get_quoted(cur_pos, '\"', dest, dest_len);
1603                 cur_pos = p ? p : cur_pos + 2;
1604         } else if (*cur_pos == '{') {
1605                 gchar buf[32];
1606                 gint len;
1607                 gchar *nextline;
1608
1609                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1610                 len = atoi(buf);
1611
1612                 if ((nextline = sock_getline(sock)) == NULL)
1613                         return cur_pos;
1614                 strretchomp(nextline);
1615                 log_print("IMAP4< %s\n", nextline);
1616                 g_string_assign(str, nextline);
1617
1618                 len = MIN(len, strlen(nextline));
1619                 memcpy(dest, nextline, MIN(len, dest_len - 1));
1620                 dest[MIN(len, dest_len - 1)] = '\0';
1621                 cur_pos = str->str + len;
1622         }
1623
1624         return cur_pos;
1625 }
1626
1627 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1628                                      gchar *out_from_str,
1629                                      gchar *out_fromname_str,
1630                                      GString *str)
1631 {
1632         gchar buf[IMAPBUFSIZE];
1633         gchar *userid;
1634         gchar *domain;
1635         gchar *cur_pos = start;
1636
1637         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1638         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1639
1640         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1641
1642         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1643         Xstrdup_a(userid, buf, return cur_pos + 1);
1644
1645         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1646         Xstrdup_a(domain, buf, return cur_pos + 1);
1647
1648         if (out_fromname_str[0] != '\0') {
1649                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1650                            out_fromname_str, userid, domain);
1651         } else {
1652                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1653                            userid, domain);
1654                 strcpy(out_fromname_str, out_from_str);
1655         }
1656
1657         while (*cur_pos == ' ') cur_pos++;
1658         g_return_val_if_fail(*cur_pos == ')', NULL);
1659
1660         return cur_pos + 1;
1661 }
1662
1663 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1664                                  gchar **out_from_str,
1665                                  gchar **out_fromname_str,
1666                                  GString *str)
1667 {
1668         gchar buf[IMAPBUFSIZE];
1669         gchar name_buf[IMAPBUFSIZE];
1670         gchar *cur_pos = start;
1671         GString *addr_str;
1672
1673         if (out_from_str)     *out_from_str     = NULL;
1674         if (out_fromname_str) *out_fromname_str = NULL;
1675         buf[0] = name_buf[0] = '\0';
1676
1677         if (!strncmp(cur_pos, "NIL", 3)) {
1678                 if (out_from_str)     *out_from_str     = g_strdup("");
1679                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1680                 return cur_pos + 3;
1681         }
1682
1683         g_return_val_if_fail(*cur_pos == '(', NULL);
1684         cur_pos++;
1685
1686         addr_str = g_string_new(NULL);
1687
1688         for (;;) {
1689                 gchar ch = *cur_pos++;
1690                 if (ch == ')') break;
1691                 if (ch == '(') {
1692                         cur_pos = imap_parse_one_address
1693                                 (sock, cur_pos, buf, name_buf, str);
1694                         if (!cur_pos) {
1695                                 g_string_free(addr_str, TRUE);
1696                                 return NULL;
1697                         }
1698                         if (addr_str->str[0] != '\0')
1699                                 g_string_append(addr_str, ", ");
1700                         g_string_append(addr_str, buf);
1701                 }
1702         }
1703
1704         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1705         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1706
1707         g_string_free(addr_str, TRUE);
1708
1709         return cur_pos;
1710 }
1711
1712 static MsgFlags imap_parse_flags(const gchar *flag_str)
1713 {
1714         const gchar *p = flag_str;
1715         MsgFlags flags;
1716
1717         flags.perm_flags = MSG_UNREAD;
1718         flags.tmp_flags  = MSG_IMAP;
1719
1720         while ((p = strchr(p, '\\')) != NULL) {
1721                 p++;
1722
1723                 if (g_strncasecmp(p, "Recent", 6) == 0) {
1724                         MSG_SET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1725                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
1726                         MSG_UNSET_PERM_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1727                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
1728                         MSG_SET_PERM_FLAGS(flags, MSG_DELETED);
1729                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
1730                         MSG_SET_PERM_FLAGS(flags, MSG_MARKED);
1731                 } else if (g_strncasecmp(p, "Answered", 8) == 0) {
1732                         MSG_SET_PERM_FLAGS(flags, MSG_REPLIED);
1733                 }
1734         }
1735
1736         return flags;
1737 }
1738
1739 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
1740 {
1741         MsgInfo *msginfo;
1742         gchar buf[IMAPBUFSIZE];
1743         gchar tmp[IMAPBUFSIZE];
1744         gchar *cur_pos;
1745         gint msgnum;
1746         guint32 uid = 0;
1747         size_t size = 0;
1748         gchar *date = NULL;
1749         time_t date_t = 0;
1750         gchar *subject = NULL;
1751         gchar *tmp_from;
1752         gchar *tmp_fromname;
1753         gchar *from = NULL;
1754         gchar *fromname = NULL;
1755         gchar *tmp_to;
1756         gchar *to = NULL;
1757         gchar *inreplyto = NULL;
1758         gchar *msgid = NULL;
1759         MsgFlags flags = {0, 0};
1760
1761         g_return_val_if_fail(line_str != NULL, NULL);
1762         g_return_val_if_fail(line_str->str[0] == '*' &&
1763                              line_str->str[1] == ' ', NULL);
1764
1765         cur_pos = line_str->str + 2;
1766
1767 #define PARSE_ONE_ELEMENT(ch) \
1768 { \
1769         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
1770         g_return_val_if_fail(cur_pos != NULL, NULL); \
1771 }
1772
1773         PARSE_ONE_ELEMENT(' ');
1774         msgnum = atoi(buf);
1775
1776         PARSE_ONE_ELEMENT(' ');
1777         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
1778
1779         g_return_val_if_fail(*cur_pos == '(', NULL);
1780         cur_pos++;
1781
1782         while (*cur_pos != '\0' && *cur_pos != ')') {
1783                 while (*cur_pos == ' ') cur_pos++;
1784
1785                 if (!strncmp(cur_pos, "UID ", 4)) {
1786                         cur_pos += 4;
1787                         uid = strtoul(cur_pos, &cur_pos, 10);
1788                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
1789                         cur_pos += 6;
1790                         g_return_val_if_fail(*cur_pos == '(', NULL);
1791                         cur_pos++;
1792                         PARSE_ONE_ELEMENT(')');
1793                         flags = imap_parse_flags(buf);
1794                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
1795                         cur_pos += 12;
1796                         size = strtol(cur_pos, &cur_pos, 10);
1797                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
1798                         cur_pos += 9;
1799                         g_return_val_if_fail(*cur_pos == '(', NULL);
1800                         cur_pos = imap_parse_atom
1801                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
1802                         Xstrdup_a(date, buf, return NULL);
1803                         date_t = procheader_date_parse(NULL, date, 0);
1804
1805                         cur_pos = imap_parse_atom
1806                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1807                         if (buf[0] != '\0') {
1808                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
1809                                 Xstrdup_a(subject, tmp, return NULL);
1810                         }
1811
1812                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1813                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1814                                                      &tmp_from, &tmp_fromname,
1815                                                      line_str);
1816                         g_return_val_if_fail(cur_pos != NULL, NULL);
1817                         Xstrdup_a(from, tmp_from,
1818                                   {g_free(tmp_from); g_free(tmp_fromname);
1819                                    return NULL;});
1820                         Xstrdup_a(fromname, tmp_fromname,
1821                                   {g_free(tmp_from); g_free(tmp_fromname);
1822                                    return NULL;});
1823                         g_free(tmp_from);
1824                         g_free(tmp_fromname);
1825
1826 #define SKIP_ONE_ELEMENT() \
1827 { \
1828         g_return_val_if_fail(*cur_pos == ' ', NULL); \
1829         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
1830                                      line_str); \
1831         g_return_val_if_fail(cur_pos != NULL, NULL); \
1832 }
1833
1834                         /* skip sender and reply-to */
1835                         SKIP_ONE_ELEMENT();
1836                         SKIP_ONE_ELEMENT();
1837
1838                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1839                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1840                                                      &tmp_to, NULL, line_str);
1841                         g_return_val_if_fail(cur_pos != NULL, NULL);
1842                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
1843                         g_free(tmp_to);
1844
1845                         /* skip Cc and Bcc */
1846                         SKIP_ONE_ELEMENT();
1847                         SKIP_ONE_ELEMENT();
1848
1849 #undef SKIP_ONE_ELEMENT
1850
1851                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1852                         cur_pos = imap_parse_atom
1853                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1854                         g_return_val_if_fail(cur_pos != NULL, NULL);
1855                         if (buf[0] != '\0') {
1856                                 eliminate_parenthesis(buf, '(', ')');
1857                                 extract_parenthesis(buf, '<', '>');
1858                                 remove_space(buf);
1859                                 Xstrdup_a(inreplyto, buf, return NULL);
1860                         }
1861
1862                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1863                         cur_pos = imap_parse_atom
1864                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1865                         g_return_val_if_fail(cur_pos != NULL, NULL);
1866                         if (buf[0] != '\0') {
1867                                 extract_parenthesis(buf, '<', '>');
1868                                 remove_space(buf);
1869                                 Xstrdup_a(msgid, buf, return NULL);
1870                         }
1871
1872                         g_return_val_if_fail(*cur_pos == ')', NULL);
1873                         cur_pos++;
1874                 } else {
1875                         g_warning("invalid FETCH response: %s\n", cur_pos);
1876                         break;
1877                 }
1878         }
1879
1880         msginfo = g_new0(MsgInfo, 1);
1881         msginfo->msgnum = uid;
1882         msginfo->size = size;
1883         msginfo->date = g_strdup(date);
1884         msginfo->date_t = date_t;
1885         msginfo->subject = g_strdup(subject);
1886         msginfo->from = g_strdup(from);
1887         msginfo->fromname = g_strdup(fromname);
1888         msginfo->to = g_strdup(to);
1889         msginfo->inreplyto = g_strdup(inreplyto);
1890         msginfo->msgid = g_strdup(msgid);
1891         msginfo->flags = flags;
1892
1893         return msginfo;
1894 }
1895
1896 gint imap_msg_set_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
1897 {
1898         Folder *folder;
1899         IMAPSession *session;
1900         IMAPFlags iflags = 0;
1901         gint ok = IMAP_SUCCESS;
1902
1903         g_return_val_if_fail(msginfo != NULL, -1);
1904         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
1905         g_return_val_if_fail(msginfo->folder != NULL, -1);
1906         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
1907
1908         folder = msginfo->folder->folder;
1909         g_return_val_if_fail(folder->type == F_IMAP, -1);
1910
1911         session = imap_session_get(folder);
1912         if (!session) return -1;
1913
1914         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
1915         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
1916         if (iflags) {
1917                 ok = imap_set_message_flags(session, msginfo->msgnum,
1918                                             msginfo->msgnum, iflags, TRUE);
1919                 if (ok != IMAP_SUCCESS) return ok;
1920         }
1921
1922         if (flags & MSG_UNREAD)
1923                 ok = imap_set_message_flags(session, msginfo->msgnum,
1924                                             msginfo->msgnum, IMAP_FLAG_SEEN,
1925                                             FALSE);
1926         return ok;
1927 }
1928
1929 gint imap_msg_unset_perm_flags(MsgInfo *msginfo, MsgPermFlags flags)
1930 {
1931         Folder *folder;
1932         IMAPSession *session;
1933         IMAPFlags iflags = 0;
1934         gint ok = IMAP_SUCCESS;
1935
1936         g_return_val_if_fail(msginfo != NULL, -1);
1937         g_return_val_if_fail(MSG_IS_IMAP(msginfo->flags), -1);
1938         g_return_val_if_fail(msginfo->folder != NULL, -1);
1939         g_return_val_if_fail(msginfo->folder->folder != NULL, -1);
1940
1941         folder = msginfo->folder->folder;
1942         g_return_val_if_fail(folder->type == F_IMAP, -1);
1943
1944         session = imap_session_get(folder);
1945         if (!session) return -1;
1946
1947         if (flags & MSG_MARKED)  iflags |= IMAP_FLAG_FLAGGED;
1948         if (flags & MSG_REPLIED) iflags |= IMAP_FLAG_ANSWERED;
1949         if (iflags) {
1950                 ok = imap_set_message_flags(session, msginfo->msgnum,
1951                                             msginfo->msgnum, iflags, FALSE);
1952                 if (ok != IMAP_SUCCESS) return ok;
1953         }
1954
1955         if (flags & MSG_UNREAD)
1956                 ok = imap_set_message_flags(session, msginfo->msgnum,
1957                                             msginfo->msgnum, IMAP_FLAG_SEEN,
1958                                             TRUE);
1959         return ok;
1960 }
1961
1962 static gint imap_set_message_flags(IMAPSession *session,
1963                                    guint32 first_uid,
1964                                    guint32 last_uid,
1965                                    IMAPFlags flags,
1966                                    gboolean is_set)
1967 {
1968         GString *buf;
1969         gint ok;
1970
1971         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
1972
1973         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
1974         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
1975         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
1976         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
1977         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
1978
1979         if (buf->str[buf->len - 1] == ' ')
1980                 g_string_truncate(buf, buf->len - 1);
1981
1982         g_string_append_c(buf, ')');
1983
1984         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
1985                             buf->str);
1986         g_string_free(buf, TRUE);
1987
1988         return ok;
1989 }
1990
1991 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
1992                         const gchar *path,
1993                         gint *exists, gint *recent, gint *unseen,
1994                         guint32 *uid_validity)
1995 {
1996         gchar *real_path;
1997         gint ok;
1998
1999         real_path = imap_get_real_path(folder, path);
2000         ok = imap_cmd_select(SESSION(session)->sock, real_path,
2001                              exists, recent, unseen, uid_validity);
2002         if (ok != IMAP_SUCCESS)
2003                 log_warning(_("can't select folder: %s\n"), real_path);
2004         g_free(real_path);
2005
2006         return ok;
2007 }
2008
2009 #define THROW(err) { ok = err; goto catch; }
2010
2011 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
2012 {
2013         gint ok;
2014         GPtrArray *argbuf;
2015         gchar *str;
2016         gint num;
2017
2018         *uid = 0;
2019         argbuf = g_ptr_array_new();
2020
2021         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
2022         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
2023                 THROW(ok);
2024
2025         str = search_array_contain_str(argbuf, "FETCH");
2026         if (!str) THROW(IMAP_ERROR);
2027
2028         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
2029             num != msgnum) {
2030                 g_warning("imap_get_uid(): invalid FETCH line.\n");
2031                 THROW(IMAP_ERROR);
2032         }
2033
2034 catch:
2035         ptr_array_free_strings(argbuf);
2036         g_ptr_array_free(argbuf, TRUE);
2037
2038         return ok;
2039 }
2040
2041 static gint imap_status(IMAPSession *session, IMAPFolder *folder,
2042                         const gchar *path,
2043                         gint *messages, gint *recent, gint *unseen,
2044                         guint32 *uid_validity)
2045 {
2046         gchar *real_path;
2047         gchar *real_path_;
2048         gint ok;
2049         GPtrArray *argbuf;
2050         gchar *str;
2051
2052         *messages = *recent = *unseen = *uid_validity = 0;
2053
2054         argbuf = g_ptr_array_new();
2055
2056         real_path = imap_get_real_path(folder, path);
2057         QUOTE_IF_REQUIRED(real_path_, real_path);
2058         imap_cmd_gen_send(SESSION(session)->sock, "STATUS %s "
2059                           "(MESSAGES RECENT UNSEEN UIDVALIDITY)", real_path_);
2060
2061         ok = imap_cmd_ok(SESSION(session)->sock, argbuf);
2062         if (ok != IMAP_SUCCESS) THROW(ok);
2063
2064         str = search_array_str(argbuf, "STATUS");
2065         if (!str) THROW(IMAP_ERROR);
2066
2067         str = strchr(str, '(');
2068         if (!str) THROW(IMAP_ERROR);
2069         str++;
2070         while (*str != '\0' && *str != ')') {
2071                 while (*str == ' ') str++;
2072
2073                 if (!strncmp(str, "MESSAGES ", 9)) {
2074                         str += 9;
2075                         *messages = strtol(str, &str, 10);
2076                 } else if (!strncmp(str, "RECENT ", 7)) {
2077                         str += 7;
2078                         *recent = strtol(str, &str, 10);
2079                 } else if (!strncmp(str, "UNSEEN ", 7)) {
2080                         str += 7;
2081                         *unseen = strtol(str, &str, 10);
2082                 } else if (!strncmp(str, "UIDVALIDITY ", 12)) {
2083                         str += 12;
2084                         *uid_validity = strtoul(str, &str, 10);
2085                 } else {
2086                         g_warning("invalid STATUS response: %s\n", str);
2087                         break;
2088                 }
2089         }
2090
2091 catch:
2092         g_free(real_path);
2093         ptr_array_free_strings(argbuf);
2094         g_ptr_array_free(argbuf, TRUE);
2095
2096         return ok;
2097 }
2098
2099 #undef THROW
2100
2101
2102 /* low-level IMAP4rev1 commands */
2103
2104 static gint imap_cmd_login(SockInfo *sock,
2105                            const gchar *user, const gchar *pass)
2106 {
2107         gchar *user_, *pass_;
2108         gint ok;
2109
2110         QUOTE_IF_REQUIRED(user_, user);
2111         QUOTE_IF_REQUIRED(pass_, pass);
2112         imap_cmd_gen_send(sock, "LOGIN %s %s", user_, pass_);
2113
2114         ok = imap_cmd_ok(sock, NULL);
2115         if (ok != IMAP_SUCCESS)
2116                 log_warning(_("IMAP4 login failed.\n"));
2117
2118         return ok;
2119 }
2120
2121 static gint imap_cmd_logout(SockInfo *sock)
2122 {
2123         imap_cmd_gen_send(sock, "LOGOUT");
2124         return imap_cmd_ok(sock, NULL);
2125 }
2126
2127 /* Send a NOOP, and examine the server's response to see whether this
2128  * connection is pre-authenticated or not. */
2129 static gint imap_greeting(SockInfo *sock, gboolean *is_preauth)
2130 {
2131         GPtrArray *argbuf;
2132         gint r;
2133
2134         imap_cmd_gen_send(sock, "NOOP");
2135         argbuf = g_ptr_array_new(); /* will hold messages sent back */
2136         r = imap_cmd_ok(sock, argbuf);
2137         *is_preauth = search_array_starts(argbuf, "PREAUTH") != NULL;
2138
2139         return r;
2140 }
2141
2142 static gint imap_cmd_noop(SockInfo *sock)
2143 {
2144         imap_cmd_gen_send(sock, "NOOP");
2145         return imap_cmd_ok(sock, NULL);
2146 }
2147
2148 #define THROW(err) { ok = err; goto catch; }
2149
2150 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
2151 {
2152         gint ok;
2153         GPtrArray *argbuf;
2154         gchar *str;
2155
2156         argbuf = g_ptr_array_new();
2157
2158         imap_cmd_gen_send(sock, "NAMESPACE");
2159         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
2160
2161         str = search_array_str(argbuf, "NAMESPACE");
2162         if (!str) THROW(IMAP_ERROR);
2163
2164         *ns_str = g_strdup(str);
2165
2166 catch:
2167         ptr_array_free_strings(argbuf);
2168         g_ptr_array_free(argbuf, TRUE);
2169
2170         return ok;
2171 }
2172
2173 #undef THROW
2174
2175 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
2176                           const gchar *mailbox, GPtrArray *argbuf)
2177 {
2178         gchar *ref_, *mailbox_;
2179
2180         if (!ref) ref = "\"\"";
2181         if (!mailbox) mailbox = "\"\"";
2182
2183         QUOTE_IF_REQUIRED(ref_, ref);
2184         QUOTE_IF_REQUIRED(mailbox_, mailbox);
2185         imap_cmd_gen_send(sock, "LIST %s %s", ref_, mailbox_);
2186
2187         return imap_cmd_ok(sock, argbuf);
2188 }
2189
2190 #define THROW goto catch
2191
2192 static gint imap_cmd_do_select(SockInfo *sock, const gchar *folder,
2193                                gboolean examine,
2194                                gint *exists, gint *recent, gint *unseen,
2195                                guint32 *uid_validity)
2196 {
2197         gint ok;
2198         gchar *resp_str;
2199         GPtrArray *argbuf;
2200         gchar *select_cmd;
2201         gchar *folder_;
2202
2203         *exists = *recent = *unseen = *uid_validity = 0;
2204         argbuf = g_ptr_array_new();
2205
2206         if (examine)
2207                 select_cmd = "EXAMINE";
2208         else
2209                 select_cmd = "SELECT";
2210
2211         QUOTE_IF_REQUIRED(folder_, folder);
2212         imap_cmd_gen_send(sock, "%s %s", select_cmd, folder_);
2213
2214         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
2215
2216         resp_str = search_array_contain_str(argbuf, "EXISTS");
2217         if (resp_str) {
2218                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
2219                         g_warning("imap_cmd_select(): invalid EXISTS line.\n");
2220                         THROW;
2221                 }
2222         }
2223
2224         resp_str = search_array_contain_str(argbuf, "RECENT");
2225         if (resp_str) {
2226                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
2227                         g_warning("imap_cmd_select(): invalid RECENT line.\n");
2228                         THROW;
2229                 }
2230         }
2231
2232         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
2233         if (resp_str) {
2234                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
2235                     != 1) {
2236                         g_warning("imap_cmd_select(): invalid UIDVALIDITY line.\n");
2237                         THROW;
2238                 }
2239         }
2240
2241         resp_str = search_array_contain_str(argbuf, "UNSEEN");
2242         if (resp_str) {
2243                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
2244                         g_warning("imap_cmd_select(): invalid UNSEEN line.\n");
2245                         THROW;
2246                 }
2247         }
2248
2249 catch:
2250         ptr_array_free_strings(argbuf);
2251         g_ptr_array_free(argbuf, TRUE);
2252
2253         return ok;
2254 }
2255
2256 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
2257                             gint *exists, gint *recent, gint *unseen,
2258                             guint32 *uid_validity)
2259 {
2260         return imap_cmd_do_select(sock, folder, FALSE,
2261                                   exists, recent, unseen, uid_validity);
2262 }
2263
2264 static gint imap_cmd_examine(SockInfo *sock, const gchar *folder,
2265                              gint *exists, gint *recent, gint *unseen,
2266                              guint32 *uid_validity)
2267 {
2268         return imap_cmd_do_select(sock, folder, TRUE,
2269                                   exists, recent, unseen, uid_validity);
2270 }
2271
2272 #undef THROW
2273
2274 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
2275 {
2276         gchar *folder_;
2277
2278         QUOTE_IF_REQUIRED(folder_, folder);
2279         imap_cmd_gen_send(sock, "CREATE %s", folder_);
2280
2281         return imap_cmd_ok(sock, NULL);
2282 }
2283
2284 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
2285 {
2286         gchar *folder_;
2287
2288         QUOTE_IF_REQUIRED(folder_, folder);
2289         imap_cmd_gen_send(sock, "DELETE %s", folder_);
2290
2291         return imap_cmd_ok(sock, NULL);
2292 }
2293
2294 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
2295 {
2296         gint ok;
2297         gchar buf[IMAPBUFSIZE];
2298         gchar *cur_pos;
2299         gchar size_str[32];
2300         glong size_num;
2301
2302         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
2303
2304         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
2305
2306         if (sock_gets(sock, buf, sizeof(buf)) < 0)
2307                 return IMAP_ERROR;
2308         strretchomp(buf);
2309         if (buf[0] != '*' || buf[1] != ' ')
2310                 return IMAP_ERROR;
2311         log_print("IMAP4< %s\n", buf);
2312
2313         cur_pos = strchr(buf, '{');
2314         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2315         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
2316         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
2317         size_num = atol(size_str);
2318
2319         if (*cur_pos != '\0') return IMAP_ERROR;
2320
2321         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
2322                 return IMAP_ERROR;
2323
2324         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
2325                 return IMAP_ERROR;
2326
2327         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
2328                 return IMAP_ERROR;
2329
2330         ok = imap_cmd_ok(sock, NULL);
2331
2332         return ok;
2333 }
2334
2335 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
2336                             const gchar *file)
2337 {
2338         gint ok;
2339         gint size;
2340         gchar *destfolder_;
2341         gchar buf[BUFFSIZE];
2342         FILE *fp;
2343
2344         g_return_val_if_fail(file != NULL, IMAP_ERROR);
2345
2346         size = get_file_size_as_crlf(file);
2347         if ((fp = fopen(file, "r")) == NULL) {
2348                 FILE_OP_ERROR(file, "fopen");
2349                 return -1;
2350         }
2351         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2352         imap_cmd_gen_send(sock, "APPEND %s (\\Seen) {%d}", destfolder_, size);
2353
2354         ok = imap_cmd_gen_recv(sock, buf, sizeof(buf));
2355         if (ok != IMAP_SUCCESS || buf[0] != '+' || buf[1] != ' ') {
2356                 log_warning(_("can't append %s to %s\n"), file, destfolder_);
2357                 fclose(fp);
2358                 return IMAP_ERROR;
2359         }
2360
2361         log_print("IMAP4> %s\n", _("(sending file...)"));
2362
2363         while (fgets(buf, sizeof(buf), fp) != NULL) {
2364                 strretchomp(buf);
2365                 if (sock_puts(sock, buf) < 0) {
2366                         fclose(fp);
2367                         sock_close(sock);
2368                         return -1;
2369                 }
2370         }
2371
2372         if (ferror(fp)) {
2373                 FILE_OP_ERROR(file, "fgets");
2374                 fclose(fp);
2375                 sock_close(sock);
2376                 return -1;
2377         }
2378
2379         sock_puts(sock, "");
2380
2381         fclose(fp);
2382         return imap_cmd_ok(sock, NULL);
2383 }
2384
2385 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
2386 {
2387         gint ok;
2388         gchar *destfolder_;
2389
2390         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
2391
2392         QUOTE_IF_REQUIRED(destfolder_, destfolder);
2393         imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder_);
2394
2395         ok = imap_cmd_ok(sock, NULL);
2396         if (ok != IMAP_SUCCESS) {
2397                 log_warning(_("can't copy %d to %s\n"), uid, destfolder_);
2398                 return -1;
2399         }
2400
2401         return ok;
2402 }
2403
2404 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
2405 {
2406         imap_cmd_gen_send
2407                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
2408                  first_uid, last_uid);
2409
2410         return IMAP_SUCCESS;
2411 }
2412
2413 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
2414                            gchar *sub_cmd)
2415 {
2416         gint ok;
2417
2418         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
2419                           first_uid, last_uid, sub_cmd);
2420
2421         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2422                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
2423                             first_uid, last_uid, sub_cmd);
2424                 return ok;
2425         }
2426
2427         return IMAP_SUCCESS;
2428 }
2429
2430 static gint imap_cmd_expunge(SockInfo *sock)
2431 {
2432         gint ok;
2433
2434         imap_cmd_gen_send(sock, "EXPUNGE");
2435         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
2436                 log_warning(_("error while imap command: EXPUNGE\n"));
2437                 return ok;
2438         }
2439
2440         return IMAP_SUCCESS;
2441 }
2442
2443
2444 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
2445 {
2446         gint ok;
2447         gchar buf[IMAPBUFSIZE];
2448         gint cmd_num;
2449         gchar cmd_status[IMAPBUFSIZE];
2450
2451         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
2452                == IMAP_SUCCESS) {
2453                 if (buf[0] == '*' && buf[1] == ' ') {
2454                         if (argbuf)
2455                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
2456                         continue;
2457                 }
2458
2459                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
2460                         return IMAP_ERROR;
2461                 else if (cmd_num == imap_cmd_count &&
2462                          !strcmp(cmd_status, "OK")) {
2463                         if (argbuf)
2464                                 g_ptr_array_add(argbuf, g_strdup(buf));
2465                         return IMAP_SUCCESS;
2466                 } else
2467                         return IMAP_ERROR;
2468         }
2469
2470         return ok;
2471 }
2472
2473 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
2474 {
2475         gchar buf[IMAPBUFSIZE];
2476         gchar tmp[IMAPBUFSIZE];
2477         gchar *p;
2478         va_list args;
2479
2480         va_start(args, format);
2481         g_vsnprintf(tmp, sizeof(tmp), format, args);
2482         va_end(args);
2483
2484         imap_cmd_count++;
2485
2486         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
2487         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
2488                 *p = '\0';
2489                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
2490         } else
2491                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
2492
2493         sock_write(sock, buf, strlen(buf));
2494 }
2495
2496 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
2497 {
2498         if (sock_gets(sock, buf, size) == -1)
2499                 return IMAP_SOCKET;
2500
2501         strretchomp(buf);
2502
2503         log_print("IMAP4< %s\n", buf);
2504
2505         return IMAP_SUCCESS;
2506 }
2507
2508
2509 /* misc utility functions */
2510
2511 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
2512 {
2513         gchar *tmp;
2514
2515         dest[0] = '\0';
2516         tmp = strchr(src, ch);
2517         if (!tmp)
2518                 return NULL;
2519
2520         memcpy(dest, src, MIN(tmp - src, len - 1));
2521         dest[MIN(tmp - src, len - 1)] = '\0';
2522
2523         return tmp + 1;
2524 }
2525
2526 static gchar *get_quoted(const gchar *src, gchar ch, gchar *dest, gint len)
2527 {
2528         const gchar *p = src;
2529         gint n = 0;
2530
2531         g_return_val_if_fail(*p == ch, NULL);
2532
2533         *dest = '\0';
2534         p++;
2535
2536         while (*p != '\0' && *p != ch) {
2537                 if (n < len - 1) {
2538                         if (*p == '\\' && *(p + 1) != '\0')
2539                                 p++;
2540                         *dest++ = *p++;
2541                 } else
2542                         p++;
2543                 n++;
2544         }
2545
2546         *dest = '\0';
2547         return (gchar *)(*p == ch ? p + 1 : p);
2548 }
2549
2550 static gchar *search_array_starts(GPtrArray *array, const gchar *str)
2551 {
2552         gint i;
2553         size_t len;
2554
2555         g_return_val_if_fail(str != NULL, NULL);
2556         len = strlen(str);
2557         for (i = 0; i < array->len; i++) {
2558                 gchar *tmp;
2559                 tmp = g_ptr_array_index(array, i);
2560                 if (strncmp(tmp, str, len) == 0)
2561                         return tmp;
2562         }
2563         return NULL;
2564 }
2565
2566 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
2567 {
2568         gint i;
2569
2570         for (i = 0; i < array->len; i++) {
2571                 gchar *tmp;
2572
2573                 tmp = g_ptr_array_index(array, i);
2574                 if (strstr(tmp, str) != NULL)
2575                         return tmp;
2576         }
2577
2578         return NULL;
2579 }
2580
2581 static gchar *search_array_str(GPtrArray *array, gchar *str)
2582 {
2583         gint i;
2584         gint len;
2585
2586         len = strlen(str);
2587
2588         for (i = 0; i < array->len; i++) {
2589                 gchar *tmp;
2590
2591                 tmp = g_ptr_array_index(array, i);
2592                 if (!strncmp(tmp, str, len))
2593                         return tmp;
2594         }
2595
2596         return NULL;
2597 }
2598
2599 static void imap_path_separator_subst(gchar *str, gchar separator)
2600 {
2601         if (separator && separator != '/')
2602                 subst_char(str, '/', separator);
2603 }