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