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