src/imap.c

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