src/imap.c

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