src/imap.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include <glib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <dirent.h>
  29 #include <unistd.h>
  30 #include <ctype.h>
  31
  32 #include "intl.h"
  33 #include "imap.h"
  34 #include "socket.h"
  35 #include "recv.h"
  36 #include "procmsg.h"
  37 #include "procheader.h"
  38 #include "folder.h"
  39 #include "statusbar.h"
  40 #include "prefs_account.h"
  41 #include "codeconv.h"
  42 #include "utils.h"
  43 #include "inputdialog.h"
  44
  45 #define IMAP4_PORT      143
  46
  47 static GList *session_list = NULL;
  48
  49 static gint imap_cmd_count = 0;
  50
  51 static IMAPSession *imap_session_get    (Folder         *folder);
  52 static gchar *imap_query_password       (const gchar    *server,
  53                                          const gchar    *user);
  54
  55 static gint imap_do_copy                (Folder         *folder,
  56                                          FolderItem     *dest,
  57                                          MsgInfo        *msginfo,
  58                                          gboolean        remove_source);
  59 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  60                                          FolderItem     *dest,
  61                                          GSList         *msglist,
  62                                          gboolean        remove_source);
  63
  64 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
  65                                                  FolderItem     *item,
  66                                                  guint32         first_uid,
  67                                                  guint32         last_uid);
  68 static GSList *imap_delete_cached_messages      (GSList         *mlist,
  69                                                  FolderItem     *item,
  70                                                  guint32         first_uid,
  71                                                  guint32         last_uid);
  72 static void imap_delete_all_cached_messages     (FolderItem     *item);
  73
  74 static SockInfo *imap_open              (const gchar    *server,
  75                                          gushort         port,
  76                                          gchar          *buf);
  77
  78 static gint imap_set_message_flags      (IMAPSession    *session,
  79                                          guint32         first_uid,
  80                                          guint32         last_uid,
  81                                          IMAPFlags       flag,
  82                                          gboolean        is_set);
  83 static gint imap_select                 (IMAPSession    *session,
  84                                          IMAPFolder     *folder,
  85                                          const gchar    *path,
  86                                          gint           *exists,
  87                                          gint           *recent,
  88                                          gint           *unseen,
  89                                          guint32        *uid_validity);
  90 static gint imap_get_uid                (IMAPSession    *session,
  91                                          gint            msgnum,
  92                                          guint32        *uid);
  93 #if 0
  94 static gint imap_status_uidnext         (IMAPSession    *session,
  95                                          IMAPFolder     *folder,
  96                                          const gchar    *path,
  97                                          guint32        *uid_next);
  98 #endif
  99
 100 static void imap_parse_namespace                (IMAPSession    *session,
 101                                                  IMAPFolder     *folder);
 102 static IMAPNameSpace *imap_find_namespace       (IMAPFolder     *folder,
 103                                                  const gchar    *path);
 104
 105 static gchar *imap_parse_atom           (SockInfo       *sock,
 106                                          gchar          *src,
 107                                          gchar          *dest,
 108                                          gint            dest_len,
 109                                          GString        *str);
 110 static gchar *imap_parse_one_address    (SockInfo       *sock,
 111                                          gchar          *start,
 112                                          gchar          *out_from_str,
 113                                          gchar          *out_fromname_str,
 114                                          GString        *str);
 115 static gchar *imap_parse_address        (SockInfo       *sock,
 116                                          gchar          *start,
 117                                          gchar         **out_from_str,
 118                                          gchar         **out_fromname_str,
 119                                          GString        *str);
 120 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
 121 static MsgInfo *imap_parse_envelope     (SockInfo       *sock,
 122                                          GString        *line_str);
 123
 124 /* low-level IMAP4rev1 commands */
 125 static gint imap_cmd_login      (SockInfo       *sock,
 126                                  const gchar    *user,
 127                                  const gchar    *pass);
 128 static gint imap_cmd_logout     (SockInfo       *sock);
 129 static gint imap_cmd_noop       (SockInfo       *sock);
 130 static gint imap_cmd_namespace  (SockInfo       *sock,
 131                                  gchar         **ns_str);
 132 static gint imap_cmd_list       (SockInfo       *sock,
 133                                  const gchar    *ref,
 134                                  const gchar    *mailbox,
 135                                  GPtrArray      *argbuf);
 136 static gint imap_cmd_select     (SockInfo       *sock,
 137                                  const gchar    *folder,
 138                                  gint           *exists,
 139                                  gint           *recent,
 140                                  gint           *unseen,
 141                                  guint32        *uid_validity);
 142 #if 0
 143 static gint imap_cmd_status     (SockInfo       *sock,
 144                                  const gchar    *folder,
 145                                  const gchar    *status,
 146                                  gint           *value);
 147 #endif
 148 static gint imap_cmd_create     (SockInfo       *sock,
 149                                  const gchar    *folder);
 150 static gint imap_cmd_delete     (SockInfo       *sock,
 151                                  const gchar    *folder);
 152 static gint imap_cmd_envelope   (SockInfo       *sock,
 153                                  guint32         first_uid,
 154                                  guint32         last_uid);
 155 #if 0
 156 static gint imap_cmd_search     (SockInfo       *sock,
 157                                  GSList         *numlist);
 158 #endif
 159 static gint imap_cmd_fetch      (SockInfo       *sock,
 160                                  guint32         uid,
 161                                  const gchar    *filename);
 162 static gint imap_cmd_append     (SockInfo       *sock,
 163                                  const gchar    *destfolder,
 164                                  const gchar    *file);
 165 static gint imap_cmd_copy       (SockInfo       *sock,
 166                                  guint32         uid,
 167                                  const gchar    *destfolder);
 168 static gint imap_cmd_store      (SockInfo       *sock,
 169                                  guint32         first_uid,
 170                                  guint32         last_uid,
 171                                  gchar          *sub_cmd);
 172 static gint imap_cmd_expunge    (SockInfo       *sock);
 173
 174 static gint imap_cmd_ok         (SockInfo       *sock,
 175                                  GPtrArray      *argbuf);
 176 static void imap_cmd_gen_send   (SockInfo       *sock,
 177                                  const gchar    *format, ...);
 178 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 179                                  gchar          *buf,
 180                                  gint            size);
 181
 182 /* misc utility functions */
 183 static gchar *strchr_cpy                        (const gchar    *src,
 184                                                  gchar           ch,
 185                                                  gchar          *dest,
 186                                                  gint            len);
 187 static gchar *search_array_contain_str          (GPtrArray      *array,
 188                                                  gchar          *str);
 189 static void imap_path_separator_subst           (gchar          *str,
 190                                                  gchar           separator);
 191
 192 static IMAPSession *imap_session_get(Folder *folder)
 193 {
 194         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 195
 196         g_return_val_if_fail(folder != NULL, NULL);
 197         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 198         g_return_val_if_fail(folder->account != NULL, NULL);
 199
 200         if (!rfolder->session) {
 201                 rfolder->session =
 202                         imap_session_new(folder->account->recv_server,
 203                                          IMAP4_PORT,
 204                                          folder->account->userid,
 205                                          folder->account->passwd);
 206                 if (rfolder->session)
 207                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 208                                              IMAP_FOLDER(folder));
 209                 statusbar_pop_all();
 210                 return IMAP_SESSION(rfolder->session);
 211         }
 212
 213         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 214                 log_warning(_("IMAP4 connection to %s:%d has been"
 215                               " disconnected. Reconnecting...\n"),
 216                             folder->account->recv_server, IMAP4_PORT);
 217                 session_destroy(rfolder->session);
 218                 rfolder->session =
 219                         imap_session_new(folder->account->recv_server,
 220                                          IMAP4_PORT, folder->account->userid,
 221                                          folder->account->passwd);
 222                 if (rfolder->session)
 223                         imap_parse_namespace(IMAP_SESSION(rfolder->session),
 224                                              IMAP_FOLDER(folder));
 225         }
 226
 227         statusbar_pop_all();
 228         return IMAP_SESSION(rfolder->session);
 229 }
 230
 231 static gchar *imap_query_password(const gchar *server, const gchar *user)
 232 {
 233         gchar *message;
 234         gchar *pass;
 235
 236         message = g_strdup_printf(_("Input password for %s on %s:"),
 237                                   user, server);
 238         pass = input_dialog_with_invisible(_("Input password"), message, NULL);
 239         g_free(message);
 240
 241         return pass;
 242 }
 243
 244 Session *imap_session_new(const gchar *server, gushort port,
 245                           const gchar *user, const gchar *pass)
 246 {
 247         gchar buf[IMAPBUFSIZE];
 248         IMAPSession *session;
 249         SockInfo *imap_sock;
 250
 251         g_return_val_if_fail(server != NULL, NULL);
 252         g_return_val_if_fail(user != NULL, NULL);
 253
 254         if (!pass) {
 255                 gchar *tmp_pass;
 256                 tmp_pass = imap_query_password(server, user);
 257                 if (!tmp_pass)
 258                         return NULL;
 259                 Xstrdup_a(pass, tmp_pass, {g_free(tmp_pass); return NULL;});
 260                 g_free(tmp_pass);
 261         }
 262
 263         log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 264                     server, port);
 265
 266         if ((imap_sock = imap_open(server, port, buf)) == NULL)
 267                 return NULL;
 268         if (imap_cmd_login(imap_sock, user, pass) != IMAP_SUCCESS) {
 269                 imap_cmd_logout(imap_sock);
 270                 sock_close(imap_sock);
 271                 return NULL;
 272         }
 273
 274         session = g_new(IMAPSession, 1);
 275         SESSION(session)->type      = SESSION_IMAP;
 276         SESSION(session)->server    = g_strdup(server);
 277         SESSION(session)->sock      = imap_sock;
 278         SESSION(session)->connected = TRUE;
 279         SESSION(session)->phase     = SESSION_READY;
 280         SESSION(session)->data      = NULL;
 281         session->mbox = NULL;
 282
 283         session_list = g_list_append(session_list, session);
 284
 285         return SESSION(session);
 286 }
 287
 288 void imap_session_destroy(IMAPSession *session)
 289 {
 290         sock_close(SESSION(session)->sock);
 291         SESSION(session)->sock = NULL;
 292
 293         g_free(session->mbox);
 294
 295         session_list = g_list_remove(session_list, session);
 296 }
 297
 298 void imap_session_destroy_all(void)
 299 {
 300         while (session_list != NULL) {
 301                 IMAPSession *session = (IMAPSession *)session_list->data;
 302
 303                 imap_cmd_logout(SESSION(session)->sock);
 304                 imap_session_destroy(session);
 305         }
 306 }
 307
 308 #define THROW goto catch
 309
 310 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 311 {
 312         GSList *mlist = NULL;
 313         IMAPSession *session;
 314         gint ok, exists = 0, recent = 0, unseen = 0;
 315         guint32 uid_validity = 0;
 316         guint32 first_uid = 0, last_uid = 0, begin;
 317
 318         g_return_val_if_fail(folder != NULL, NULL);
 319         g_return_val_if_fail(item != NULL, NULL);
 320         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 321         g_return_val_if_fail(folder->account != NULL, NULL);
 322
 323         session = imap_session_get(folder);
 324
 325         if (!session) {
 326                 mlist = procmsg_read_cache(item, FALSE);
 327                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 328                 procmsg_set_flags(mlist, item);
 329                 statusbar_pop_all();
 330                 return mlist;
 331         }
 332
 333         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 334                          &exists, &recent, &unseen, &uid_validity);
 335         if (ok != IMAP_SUCCESS) THROW;
 336         if (exists > 0) {
 337                 ok = imap_get_uid(session, 1, &first_uid);
 338                 if (ok != IMAP_SUCCESS) THROW;
 339                 if (1 != exists) {
 340                         ok = imap_get_uid(session, exists, &last_uid);
 341                         if (ok != IMAP_SUCCESS) THROW;
 342                 } else
 343                         last_uid = first_uid;
 344         } else {
 345                 imap_delete_all_cached_messages(item);
 346                 statusbar_pop_all();
 347                 return NULL;
 348         }
 349
 350         if (use_cache) {
 351                 guint32 cache_last;
 352
 353                 mlist = procmsg_read_cache(item, FALSE);
 354                 procmsg_set_flags(mlist, item);
 355                 cache_last = procmsg_get_last_num_in_cache(mlist);
 356
 357                 /* calculating the range of envelope to get */
 358                 if (item->mtime != uid_validity) {
 359                         /* mailbox is changed (get all) */
 360                         begin = first_uid;
 361                 } else if (last_uid < cache_last) {
 362                         /* mailbox is changed (get all) */
 363                         begin = first_uid;
 364                 } else if (last_uid == cache_last) {
 365                         /* mailbox unchanged (get none)*/
 366                         begin = 0;
 367                 } else {
 368                         begin = cache_last + 1;
 369                 }
 370
 371                 item->mtime = uid_validity;
 372
 373                 if (first_uid > 0 && last_uid > 0) {
 374                         mlist = imap_delete_cached_messages(mlist, item,
 375                                                             0, first_uid - 1);
 376                         mlist = imap_delete_cached_messages(mlist, item,
 377                                                             last_uid + 1,
 378                                                             UINT_MAX);
 379                 }
 380                 if (begin > 0)
 381                         mlist = imap_delete_cached_messages(mlist, item,
 382                                                             begin, UINT_MAX);
 383         } else {
 384                 imap_delete_all_cached_messages(item);
 385                 begin = first_uid;
 386         }
 387
 388         if (begin > 0 && begin <= last_uid) {
 389                 GSList *newlist;
 390                 newlist = imap_get_uncached_messages(session, item,
 391                                                      begin, last_uid);
 392                 mlist = g_slist_concat(mlist, newlist);
 393         }
 394
 395         item->last_num = last_uid;
 396
 397 catch:
 398         statusbar_pop_all();
 399         return mlist;
 400 }
 401
 402 #undef THROW
 403
 404 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint uid)
 405 {
 406         gchar *path, *filename;
 407         IMAPSession *session;
 408         gint ok;
 409
 410         g_return_val_if_fail(folder != NULL, NULL);
 411         g_return_val_if_fail(item != NULL, NULL);
 412
 413         path = folder_item_get_path(item);
 414         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(uid), NULL);
 415         g_free(path);
 416
 417         if (is_file_exist(filename)) {
 418                 debug_print(_("message %d has been already cached.\n"), uid);
 419                 return filename;
 420         }
 421
 422         session = imap_session_get(folder);
 423         if (!session) {
 424                 g_free(filename);
 425                 return NULL;
 426         }
 427
 428         debug_print(_("getting message %d...\n"), uid);
 429         ok = imap_cmd_fetch(SESSION(session)->sock, (guint32)uid, filename);
 430
 431         statusbar_pop_all();
 432
 433         if (ok != IMAP_SUCCESS) {
 434                 g_warning(_("can't fetch message %d\n"), uid);
 435                 g_free(filename);
 436                 return NULL;
 437         }
 438
 439         return filename;
 440 }
 441
 442 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 443                   gboolean remove_source)
 444 {
 445         IMAPSession *session;
 446         gint ok;
 447
 448         g_return_val_if_fail(folder != NULL, -1);
 449         g_return_val_if_fail(dest != NULL, -1);
 450         g_return_val_if_fail(file != NULL, -1);
 451
 452         session = imap_session_get(folder);
 453         if (!session)
 454                 return -1;
 455
 456         if (dest->last_num < 0) {
 457                 imap_scan_folder(folder, dest);
 458                 if (dest->last_num < 0) return -1;
 459         }
 460
 461         ok = imap_cmd_append(SESSION(session)->sock, dest->path, file);
 462         if (ok != IMAP_SUCCESS) {
 463                 g_warning(_("can't append message %s\n"), file);
 464                 return -1;
 465         }
 466
 467         if (remove_source) {
 468                 if (unlink(file) < 0)
 469                         FILE_OP_ERROR(file, "unlink");
 470         }
 471
 472         return dest->last_num;
 473 }
 474
 475 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 476                          gboolean remove_source)
 477 {
 478         gchar *destdir;
 479         IMAPSession *session;
 480         IMAPNameSpace *namespace;
 481         gint ok;
 482
 483         g_return_val_if_fail(folder != NULL, -1);
 484         g_return_val_if_fail(folder->type == F_IMAP, -1);
 485         g_return_val_if_fail(dest != NULL, -1);
 486         g_return_val_if_fail(msginfo != NULL, -1);
 487
 488         session = imap_session_get(folder);
 489         if (!session) return -1;
 490
 491         if (msginfo->folder == dest) {
 492                 g_warning(_("the src folder is identical to the dest.\n"));
 493                 return -1;
 494         }
 495
 496         Xstrdup_a(destdir, dest->path, return -1);
 497         namespace = imap_find_namespace(IMAP_FOLDER(folder), destdir);
 498         if (namespace && namespace->separator)
 499                 imap_path_separator_subst(destdir, namespace->separator);
 500
 501         if (remove_source)
 502                 debug_print(_("Moving message %s%c%d to %s ...\n"),
 503                             msginfo->folder->path, G_DIR_SEPARATOR,
 504                             msginfo->msgnum, destdir);
 505         else
 506                 debug_print(_("Copying message %s%c%d to %s ...\n"),
 507                             msginfo->folder->path, G_DIR_SEPARATOR,
 508                             msginfo->msgnum, destdir);
 509
 510         ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 511
 512         if (ok == IMAP_SUCCESS && remove_source) {
 513                 imap_set_message_flags(session, msginfo->msgnum, msginfo->msgnum,
 514                                        IMAP_FLAG_DELETED, TRUE);
 515                 imap_cmd_expunge(SESSION(session)->sock);
 516         }
 517
 518         statusbar_pop_all();
 519         return ok;
 520 }
 521
 522 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 523                                         GSList *msglist,
 524                                         gboolean remove_source)
 525 {
 526         gchar *destdir;
 527         GSList *cur;
 528         MsgInfo *msginfo;
 529         IMAPSession *session;
 530         IMAPNameSpace *namespace;
 531         gint ok;
 532
 533         g_return_val_if_fail(folder != NULL, -1);
 534         g_return_val_if_fail(dest != NULL, -1);
 535         g_return_val_if_fail(msglist != NULL, -1);
 536
 537         session = imap_session_get(folder);
 538         if (!session) return -1;
 539
 540         Xstrdup_a(destdir, dest->path, return -1);
 541         namespace = imap_find_namespace(IMAP_FOLDER(folder), destdir);
 542         if (namespace && namespace->separator)
 543                 imap_path_separator_subst(destdir, namespace->separator);
 544
 545         for (cur = msglist; cur != NULL; cur = cur->next) {
 546                 msginfo = (MsgInfo *)cur->data;
 547
 548                 if (msginfo->folder == dest) {
 549                         g_warning(_("the src folder is identical to the dest.\n"));
 550                         continue;
 551                 }
 552
 553                 if (remove_source)
 554                         debug_print(_("Moving message %s%c%d to %s ...\n"),
 555                                     msginfo->folder->path, G_DIR_SEPARATOR,
 556                                     msginfo->msgnum, destdir);
 557                 else
 558                         debug_print(_("Copying message %s%c%d to %s ...\n"),
 559                                     msginfo->folder->path, G_DIR_SEPARATOR,
 560                                     msginfo->msgnum, destdir);
 561
 562                 ok = imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 563                                    destdir);
 564
 565                 if (ok == IMAP_SUCCESS && remove_source) {
 566                         imap_set_message_flags
 567                                 (session, msginfo->msgnum, msginfo->msgnum,
 568                                  IMAP_FLAG_DELETED, TRUE);
 569                 }
 570         }
 571
 572         if (remove_source)
 573                 imap_cmd_expunge(SESSION(session)->sock);
 574
 575         statusbar_pop_all();
 576         return IMAP_SUCCESS;
 577 }
 578
 579 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 580 {
 581         return imap_do_copy(folder, dest, msginfo, TRUE);
 582 }
 583
 584 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 585                               GSList *msglist)
 586 {
 587         return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 588 }
 589
 590 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 591 {
 592         return imap_do_copy(folder, dest, msginfo, FALSE);
 593 }
 594
 595 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 596                               GSList *msglist)
 597 {
 598         return imap_do_copy_msgs_with_dest(folder, dest, msglist, FALSE);
 599 }
 600
 601 gint imap_remove_msg(Folder *folder, FolderItem *item, gint uid)
 602 {
 603         gint exists, recent, unseen;
 604         guint32 uid_validity;
 605         gint ok;
 606         IMAPSession *session;
 607
 608         g_return_val_if_fail(folder != NULL, -1);
 609         g_return_val_if_fail(folder->type == F_IMAP, -1);
 610         g_return_val_if_fail(item != NULL, -1);
 611
 612         session = imap_session_get(folder);
 613         if (!session) return -1;
 614
 615         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 616                          &exists, &recent, &unseen, &uid_validity);
 617         statusbar_pop_all();
 618         if (ok != IMAP_SUCCESS)
 619                 return ok;
 620
 621         ok = imap_set_message_flags
 622                 (IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 623                  (guint32)uid, (guint32)uid, IMAP_FLAG_DELETED, TRUE);
 624         statusbar_pop_all();
 625         if (ok != IMAP_SUCCESS) {
 626                 log_warning(_("can't set deleted flags: %d\n"), uid);
 627                 return ok;
 628         }
 629
 630         ok = imap_cmd_expunge(SESSION(session)->sock);
 631         statusbar_pop_all();
 632         if (ok != IMAP_SUCCESS) {
 633                 log_warning(_("can't expunge\n"));
 634                 return ok;
 635         }
 636
 637         return IMAP_SUCCESS;
 638 }
 639
 640 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 641 {
 642         gint exists, recent, unseen;
 643         guint32 uid_validity;
 644         gint ok;
 645         IMAPSession *session;
 646
 647         g_return_val_if_fail(folder != NULL, -1);
 648         g_return_val_if_fail(item != NULL, -1);
 649
 650         session = imap_session_get(folder);
 651         if (!session) return -1;
 652
 653         ok = imap_select(session, IMAP_FOLDER(folder), item->path,
 654                          &exists, &recent, &unseen, &uid_validity);
 655         statusbar_pop_all();
 656         if (ok != IMAP_SUCCESS)
 657                 return ok;
 658         if (exists == 0)
 659                 return IMAP_SUCCESS;
 660
 661         imap_cmd_gen_send(SESSION(session)->sock,
 662                           "STORE 1:%d +FLAGS (\\Deleted)", exists);
 663         ok = imap_cmd_ok(SESSION(session)->sock, NULL);
 664         statusbar_pop_all();
 665         if (ok != IMAP_SUCCESS) {
 666                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 667                 return ok;
 668         }
 669
 670         ok = imap_cmd_expunge(SESSION(session)->sock);
 671         statusbar_pop_all();
 672         if (ok != IMAP_SUCCESS) {
 673                 log_warning(_("can't expunge\n"));
 674                 return ok;
 675         }
 676
 677         return IMAP_SUCCESS;
 678 }
 679
 680 void imap_scan_folder(Folder *folder, FolderItem *item)
 681 {
 682 }
 683
 684 gint imap_create_tree(Folder *folder)
 685 {
 686         IMAPFolder *imapfolder = IMAP_FOLDER(folder);
 687         FolderItem *item;
 688         FolderItem *new_item;
 689         gchar *trash_path;
 690
 691         g_return_val_if_fail(folder != NULL, -1);
 692         g_return_val_if_fail(folder->node != NULL, -1);
 693         g_return_val_if_fail(folder->node->data != NULL, -1);
 694
 695         imap_session_get(folder);
 696
 697         item = FOLDER_ITEM(folder->node->data);
 698
 699         new_item = folder_item_new("INBOX", "INBOX");
 700         new_item->stype = F_INBOX;
 701         folder_item_append(item, new_item);
 702         folder->inbox = new_item;
 703
 704         if (imapfolder->namespace && imapfolder->namespace->data) {
 705                 IMAPNameSpace *namespace;
 706
 707                 namespace = (IMAPNameSpace *)imapfolder->namespace->data;
 708                 if (*namespace->name == '\0')
 709                         trash_path = g_strdup("trash");
 710                 else {
 711                         gchar *name;
 712
 713                         Xstrdup_a(name, namespace->name, return -1);
 714                         strtailchomp(name, namespace->separator);
 715                         subst_char(name, namespace->separator,
 716                                    G_DIR_SEPARATOR);
 717                         trash_path = g_strconcat(name, G_DIR_SEPARATOR_S,
 718                                                  "trash", NULL);
 719                 }
 720         } else
 721                 trash_path = g_strdup("trash");
 722
 723         new_item = imap_create_folder(folder, item, trash_path);
 724
 725         if (!new_item) {
 726                 new_item = folder_item_new("Trash", trash_path);
 727                 folder_item_append(item, new_item);
 728         } else {
 729                 g_free(new_item->name);
 730                 new_item->name = g_strdup("Trash");
 731         }
 732         new_item->stype = F_TRASH;
 733         folder->trash = new_item;
 734
 735         g_free(trash_path);
 736         return 0;
 737 }
 738
 739 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
 740                                const gchar *name)
 741 {
 742         gchar *dirpath, *imappath;
 743         IMAPSession *session;
 744         IMAPNameSpace *namespace;
 745         FolderItem *new_item;
 746         gchar *new_name;
 747         gint ok;
 748
 749         g_return_val_if_fail(folder != NULL, NULL);
 750         g_return_val_if_fail(parent != NULL, NULL);
 751         g_return_val_if_fail(name != NULL, NULL);
 752
 753         session = imap_session_get(folder);
 754         if (!session) return NULL;
 755
 756         if (parent->path)
 757                 dirpath = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 758                                       NULL);
 759         else
 760                 dirpath = g_strdup(name);
 761
 762         Xstrdup_a(imappath, dirpath, {g_free(dirpath); return NULL;});
 763         Xstrdup_a(new_name, name, {g_free(dirpath); return NULL;});
 764         namespace = imap_find_namespace(IMAP_FOLDER(folder), imappath);
 765         if (namespace && namespace->separator) {
 766                 imap_path_separator_subst(imappath, namespace->separator);
 767                 imap_path_separator_subst(new_name, namespace->separator);
 768                 strtailchomp(dirpath, '/');
 769                 strtailchomp(new_name, namespace->separator);
 770         }
 771
 772         if (strcmp(name, "INBOX") != 0) {
 773                 GPtrArray *argbuf;
 774                 gint i;
 775                 gboolean exist = FALSE;
 776
 777                 argbuf = g_ptr_array_new();
 778                 ok = imap_cmd_list(SESSION(session)->sock, NULL, imappath,
 779                                    argbuf);
 780                 statusbar_pop_all();
 781                 if (ok != IMAP_SUCCESS) {
 782                         log_warning(_("can't create mailbox: LIST failed\n"));
 783                         g_free(dirpath);
 784                         g_ptr_array_free(argbuf, TRUE);
 785                         return NULL;
 786                 }
 787
 788                 for (i = 0; i < argbuf->len; i++) {
 789                         gchar *str;
 790                         str = g_ptr_array_index(argbuf, i);
 791                         if (!strncmp(str, "LIST ", 5)) {
 792                                 exist = TRUE;
 793                                 break;
 794                         }
 795                 }
 796                 g_ptr_array_free(argbuf, TRUE);
 797
 798                 if (!exist) {
 799                         ok = imap_cmd_create(SESSION(session)->sock, imappath);
 800                         statusbar_pop_all();
 801                         if (ok != IMAP_SUCCESS) {
 802                                 log_warning(_("can't create mailbox\n"));
 803                                 g_free(dirpath);
 804                                 return NULL;
 805                         }
 806                 }
 807         }
 808
 809         new_item = folder_item_new(new_name, dirpath);
 810         folder_item_append(parent, new_item);
 811         g_free(dirpath);
 812
 813         return new_item;
 814 }
 815
 816 gint imap_remove_folder(Folder *folder, FolderItem *item)
 817 {
 818         gint ok;
 819         IMAPSession *session;
 820         IMAPNameSpace *namespace;
 821         gchar *path;
 822
 823         g_return_val_if_fail(folder != NULL, -1);
 824         g_return_val_if_fail(item != NULL, -1);
 825         g_return_val_if_fail(item->path != NULL, -1);
 826
 827         session = imap_session_get(folder);
 828         if (!session) return -1;
 829
 830         Xstrdup_a(path, item->path, return -1);
 831         namespace = imap_find_namespace(IMAP_FOLDER(folder), path);
 832         if (namespace && namespace->separator)
 833                 imap_path_separator_subst(path, namespace->separator);
 834
 835         ok = imap_cmd_delete(SESSION(session)->sock, path);
 836         statusbar_pop_all();
 837         if (ok != IMAP_SUCCESS) {
 838                 log_warning(_("can't delete mailbox\n"));
 839                 return -1;
 840         }
 841
 842         folder_item_remove(item);
 843
 844         return 0;
 845 }
 846
 847 static GSList *imap_get_uncached_messages(IMAPSession *session,
 848                                           FolderItem *item,
 849                                           guint32 first_uid, guint32 last_uid)
 850 {
 851         gchar *tmp;
 852         GSList *newlist = NULL;
 853         GSList *llast = NULL;
 854         GString *str;
 855         MsgInfo *msginfo;
 856
 857         g_return_val_if_fail(session != NULL, NULL);
 858         g_return_val_if_fail(item != NULL, NULL);
 859         g_return_val_if_fail(item->folder != NULL, NULL);
 860         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
 861         g_return_val_if_fail(first_uid <= last_uid, NULL);
 862
 863         if (imap_cmd_envelope(SESSION(session)->sock, first_uid, last_uid)
 864             != IMAP_SUCCESS) {
 865                 log_warning(_("can't get envelope\n"));
 866                 return NULL;
 867         }
 868
 869         str = g_string_new(NULL);
 870
 871         for (;;) {
 872                 if ((tmp = sock_getline(SESSION(session)->sock)) == NULL) {
 873                         log_warning(_("error occurred while getting envelope.\n"));
 874                         g_string_free(str, TRUE);
 875                         return newlist;
 876                 }
 877                 strretchomp(tmp);
 878                 log_print("IMAP4< %s\n", tmp);
 879                 if (tmp[0] != '*' || tmp[1] != ' ') {
 880                         g_free(tmp);
 881                         break;
 882                 }
 883                 g_string_assign(str, tmp);
 884                 g_free(tmp);
 885
 886                 msginfo = imap_parse_envelope(SESSION(session)->sock, str);
 887                 if (!msginfo) {
 888                         log_warning(_("can't parse envelope: %s\n"), str->str);
 889                         continue;
 890                 }
 891
 892                 msginfo->folder = item;
 893
 894                 if (!newlist)
 895                         llast = newlist = g_slist_append(newlist, msginfo);
 896                 else {
 897                         llast = g_slist_append(llast, msginfo);
 898                         llast = llast->next;
 899                 }
 900         }
 901
 902         g_string_free(str, TRUE);
 903
 904         return newlist;
 905 }
 906
 907 static GSList *imap_delete_cached_messages(GSList *mlist, FolderItem *item,
 908                                            guint32 first_uid, guint32 last_uid)
 909 {
 910         GSList *cur, *next;
 911         MsgInfo *msginfo;
 912         gchar *dir;
 913
 914         g_return_val_if_fail(item != NULL, mlist);
 915         g_return_val_if_fail(item->folder != NULL, mlist);
 916         g_return_val_if_fail(item->folder->type == F_IMAP, mlist);
 917
 918         debug_print(_("Deleting cached messages %d - %d ... "),
 919                     first_uid, last_uid);
 920
 921         dir = folder_item_get_path(item);
 922         remove_numbered_files(dir, first_uid, last_uid);
 923         g_free(dir);
 924
 925         for (cur = mlist; cur != NULL; ) {
 926                 next = cur->next;
 927
 928                 msginfo = (MsgInfo *)cur->data;
 929                 if (msginfo != NULL && first_uid <= msginfo->msgnum &&
 930                     msginfo->msgnum <= last_uid) {
 931                         procmsg_msginfo_free(msginfo);
 932                         mlist = g_slist_remove(mlist, msginfo);
 933                 }
 934
 935                 cur = next;
 936         }
 937
 938         debug_print(_("done.\n"));
 939
 940         return mlist;
 941 }
 942
 943 static void imap_delete_all_cached_messages(FolderItem *item)
 944 {
 945         gchar *dir;
 946
 947         g_return_if_fail(item != NULL);
 948         g_return_if_fail(item->folder != NULL);
 949         g_return_if_fail(item->folder->type == F_IMAP);
 950
 951         debug_print(_("Deleting all cached messages... "));
 952
 953         dir = folder_item_get_path(item);
 954         remove_all_numbered_files(dir);
 955         g_free(dir);
 956
 957         debug_print(_("done.\n"));
 958 }
 959
 960 static SockInfo *imap_open(const gchar *server, gushort port, gchar *buf)
 961 {
 962         SockInfo *sock;
 963
 964         if ((sock = sock_connect(server, port)) == NULL) {
 965                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
 966                             server, port);
 967                 return NULL;
 968         }
 969
 970         imap_cmd_count = 0;
 971
 972         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
 973                 sock_close(sock);
 974                 return NULL;
 975         }
 976
 977         return sock;
 978 }
 979
 980 #define THROW goto catch
 981
 982 static void imap_parse_namespace(IMAPSession *session, IMAPFolder *folder)
 983 {
 984         gchar *ns_str;
 985         gchar *name;
 986         gchar *separator;
 987         gchar *p;
 988         IMAPNameSpace *namespace;
 989         GList *ns_list = NULL;
 990
 991         g_return_if_fail(session != NULL);
 992         g_return_if_fail(folder != NULL);
 993
 994         if (folder->namespace != NULL) return;
 995
 996         if (imap_cmd_namespace(SESSION(session)->sock, &ns_str)
 997             != IMAP_SUCCESS) {
 998                 log_warning(_("can't get namespace\n"));
 999                 return;
1000         }
1001
1002         /* get the first element */
1003         extract_one_parenthesis_with_skip_quote(ns_str, '"', '(', ')');
1004         g_strstrip(ns_str);
1005         p = ns_str;
1006
1007         while (*p != '\0') {
1008                 /* parse ("#foo" "/") */
1009
1010                 while (*p && *p != '(') p++;
1011                 if (*p == '\0') THROW;
1012                 p++;
1013
1014                 while (*p && *p != '"') p++;
1015                 if (*p == '\0') THROW;
1016                 p++;
1017                 name = p;
1018
1019                 while (*p && *p != '"') p++;
1020                 if (*p == '\0') THROW;
1021                 *p = '\0';
1022                 p++;
1023
1024                 while (*p && isspace(*p)) p++;
1025                 if (*p == '\0') THROW;
1026                 if (strncmp(p, "NIL", 3) == 0)
1027                         separator = NULL;
1028                 else if (*p == '"') {
1029                         p++;
1030                         separator = p;
1031                         while (*p && *p != '"') p++;
1032                         if (*p == '\0') THROW;
1033                         *p = '\0';
1034                         p++;
1035                 } else THROW;
1036
1037                 while (*p && *p != ')') p++;
1038                 if (*p == '\0') THROW;
1039                 p++;
1040
1041                 namespace = g_new(IMAPNameSpace, 1);
1042                 namespace->name = g_strdup(name);
1043                 namespace->separator = separator ? separator[0] : '\0';
1044                 ns_list = g_list_append(ns_list, namespace);
1045                 IMAP_FOLDER(folder)->namespace = ns_list;
1046         }
1047
1048 catch:
1049         g_free(ns_str);
1050         return;
1051 }
1052
1053 #undef THROW
1054
1055 static IMAPNameSpace *imap_find_namespace(IMAPFolder *folder,
1056                                           const gchar *path)
1057 {
1058         IMAPNameSpace *namespace = NULL;
1059         GList *ns_list;
1060         gchar *name;
1061
1062         g_return_val_if_fail(folder != NULL, NULL);
1063         g_return_val_if_fail(path != NULL, NULL);
1064
1065         ns_list = folder->namespace;
1066
1067         for (; ns_list != NULL; ns_list = ns_list->next) {
1068                 IMAPNameSpace *tmp_ns = ns_list->data;
1069
1070                 Xstrdup_a(name, tmp_ns->name, return namespace);
1071                 if (tmp_ns->separator && tmp_ns->separator != '/')
1072                         subst_char(name, tmp_ns->separator, '/');
1073                 if (strncmp(path, name, strlen(name)) == 0)
1074                         namespace = tmp_ns;
1075         }
1076
1077         return namespace;
1078 }
1079
1080 static gchar *imap_parse_atom(SockInfo *sock, gchar *src,
1081                               gchar *dest, gint dest_len, GString *str)
1082 {
1083         gchar *cur_pos = src;
1084
1085         g_return_val_if_fail(str != NULL, cur_pos);
1086
1087         while (*cur_pos == ' ') cur_pos++;
1088
1089         if (!strncmp(cur_pos, "NIL", 3)) {
1090                 *dest = '\0';
1091                 cur_pos += 3;
1092         } else if (*cur_pos == '\"') {
1093                 gchar *p;
1094
1095                 p = strchr_cpy(cur_pos + 1, '\"', dest, dest_len);
1096                 cur_pos = p ? p : cur_pos + 2;
1097         } else if (*cur_pos == '{') {
1098                 gchar buf[32];
1099                 gint len;
1100                 gchar *nextline;
1101
1102                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
1103                 len = atoi(buf);
1104
1105                 if ((nextline = sock_getline(sock)) == NULL)
1106                         return cur_pos;
1107                 strretchomp(nextline);
1108                 log_print("IMAP4< %s\n", nextline);
1109                 g_string_assign(str, nextline);
1110
1111                 len = MIN(len, strlen(nextline));
1112                 memcpy(dest, nextline, MIN(len, dest_len - 1));
1113                 dest[MIN(len, dest_len - 1)] = '\0';
1114                 cur_pos = str->str + len;
1115         }
1116
1117         return cur_pos;
1118 }
1119
1120 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
1121                                      gchar *out_from_str,
1122                                      gchar *out_fromname_str,
1123                                      GString *str)
1124 {
1125         gchar buf[IMAPBUFSIZE];
1126         gchar *userid;
1127         gchar *domain;
1128         gchar *cur_pos = start;
1129
1130         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1131         conv_unmime_header(out_fromname_str, IMAPBUFSIZE, buf, NULL);
1132
1133         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1134
1135         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1136         Xstrdup_a(userid, buf, return cur_pos + 1);
1137
1138         cur_pos = imap_parse_atom(sock, cur_pos, buf, sizeof(buf), str);
1139         Xstrdup_a(domain, buf, return cur_pos + 1);
1140
1141         if (out_fromname_str[0] != '\0') {
1142                 g_snprintf(out_from_str, IMAPBUFSIZE, "\"%s\" <%s@%s>",
1143                            out_fromname_str, userid, domain);
1144         } else {
1145                 g_snprintf(out_from_str, IMAPBUFSIZE, "%s@%s",
1146                            userid, domain);
1147                 strcpy(out_fromname_str, out_from_str);
1148         }
1149
1150         while (*cur_pos == ' ') cur_pos++;
1151         g_return_val_if_fail(*cur_pos == ')', NULL);
1152
1153         return cur_pos + 1;
1154 }
1155
1156 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
1157                                  gchar **out_from_str,
1158                                  gchar **out_fromname_str,
1159                                  GString *str)
1160 {
1161         gchar buf[IMAPBUFSIZE];
1162         gchar name_buf[IMAPBUFSIZE];
1163         gchar *cur_pos = start;
1164         GString *addr_str;
1165
1166         if (out_from_str)     *out_from_str     = NULL;
1167         if (out_fromname_str) *out_fromname_str = NULL;
1168         buf[0] = name_buf[0] = '\0';
1169
1170         if (!strncmp(cur_pos, "NIL", 3)) {
1171                 if (out_from_str)     *out_from_str     = g_strdup("");
1172                 if (out_fromname_str) *out_fromname_str = g_strdup("");
1173                 return cur_pos + 3;
1174         }
1175
1176         g_return_val_if_fail(*cur_pos == '(', NULL);
1177         cur_pos++;
1178
1179         addr_str = g_string_new(NULL);
1180
1181         for (;;) {
1182                 gchar ch = *cur_pos++;
1183                 if (ch == ')') break;
1184                 if (ch == '(') {
1185                         cur_pos = imap_parse_one_address
1186                                 (sock, cur_pos, buf, name_buf, str);
1187                         if (!cur_pos) {
1188                                 g_string_free(addr_str, TRUE);
1189                                 return NULL;
1190                         }
1191                         if (addr_str->str[0] != '\0')
1192                                 g_string_append(addr_str, ", ");
1193                         g_string_append(addr_str, buf);
1194                 }
1195         }
1196
1197         if (out_from_str)     *out_from_str     = g_strdup(addr_str->str);
1198         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
1199
1200         g_string_free(addr_str, TRUE);
1201
1202         return cur_pos;
1203 }
1204
1205 static MsgFlags imap_parse_flags(const gchar *flag_str)
1206 {
1207         const gchar *p = flag_str;
1208         MsgFlags flags;
1209
1210         flags = 0;
1211         MSG_SET_FLAGS(flags, MSG_UNREAD|MSG_IMAP);
1212
1213         while ((p = strchr(p, '\\')) != NULL) {
1214                 p++;
1215
1216                 if (g_strncasecmp(p, "Recent", 6) == 0) {
1217                         MSG_SET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1218                 } else if (g_strncasecmp(p, "Seen", 4) == 0) {
1219                         MSG_UNSET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
1220                 } else if (g_strncasecmp(p, "Deleted", 7) == 0) {
1221                         MSG_SET_FLAGS(flags, MSG_DELETED);
1222                 } else if (g_strncasecmp(p, "Flagged", 7) == 0) {
1223                         MSG_SET_FLAGS(flags, MSG_MARKED);
1224                 }
1225         }
1226
1227         return flags;
1228 }
1229
1230 static MsgInfo *imap_parse_envelope(SockInfo *sock, GString *line_str)
1231 {
1232         MsgInfo *msginfo;
1233         gchar buf[IMAPBUFSIZE];
1234         gchar tmp[IMAPBUFSIZE];
1235         gchar *cur_pos;
1236         gint msgnum;
1237         guint32 uid = 0;
1238         size_t size = 0;
1239         gchar *date = NULL;
1240         time_t date_t = 0;
1241         gchar *subject = NULL;
1242         gchar *tmp_from;
1243         gchar *tmp_fromname;
1244         gchar *from = NULL;
1245         gchar *fromname = NULL;
1246         gchar *tmp_to;
1247         gchar *to = NULL;
1248         gchar *inreplyto = NULL;
1249         gchar *msgid = NULL;
1250         MsgFlags flags = 0;
1251         gint n_element = 0;
1252
1253         g_return_val_if_fail(line_str != NULL, NULL);
1254         g_return_val_if_fail(line_str->str[0] == '*' &&
1255                              line_str->str[1] == ' ', NULL);
1256
1257         cur_pos = line_str->str + 2;
1258
1259 #define PARSE_ONE_ELEMENT(ch) \
1260 { \
1261         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
1262         g_return_val_if_fail(cur_pos != NULL, NULL); \
1263 }
1264
1265         PARSE_ONE_ELEMENT(' ');
1266         msgnum = atoi(buf);
1267
1268         PARSE_ONE_ELEMENT(' ');
1269         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
1270
1271         g_return_val_if_fail(*cur_pos == '(', NULL);
1272         cur_pos++;
1273
1274         while (n_element < 4) {
1275                 while (*cur_pos == ' ') cur_pos++;
1276
1277                 if (!strncmp(cur_pos, "UID ", 4)) {
1278                         cur_pos += 4;
1279                         uid = strtoul(cur_pos, &cur_pos, 10);
1280                 } else if (!strncmp(cur_pos, "FLAGS ", 6)) {
1281                         cur_pos += 6;
1282                         g_return_val_if_fail(*cur_pos == '(', NULL);
1283                         cur_pos++;
1284                         PARSE_ONE_ELEMENT(')');
1285                         flags = imap_parse_flags(buf);
1286                 } else if (!strncmp(cur_pos, "RFC822.SIZE ", 12)) {
1287                         cur_pos += 12;
1288                         size = strtol(cur_pos, &cur_pos, 10);
1289                 } else if (!strncmp(cur_pos, "ENVELOPE ", 9)) {
1290                         cur_pos += 9;
1291                         g_return_val_if_fail(*cur_pos == '(', NULL);
1292                         cur_pos = imap_parse_atom
1293                                 (sock, cur_pos + 1, buf, sizeof(buf), line_str);
1294                         Xstrdup_a(date, buf, return NULL);
1295                         date_t = procheader_date_parse(NULL, date, 0);
1296
1297                         cur_pos = imap_parse_atom
1298                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1299                         if (buf[0] != '\0') {
1300                                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
1301                                 Xstrdup_a(subject, tmp, return NULL);
1302                         }
1303
1304                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1305                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1306                                                      &tmp_from, &tmp_fromname,
1307                                                      line_str);
1308                         Xstrdup_a(from, tmp_from,
1309                                   {g_free(tmp_from); g_free(tmp_fromname);
1310                                    return NULL;});
1311                         Xstrdup_a(fromname, tmp_fromname,
1312                                   {g_free(tmp_from); g_free(tmp_fromname);
1313                                    return NULL;});
1314                         g_free(tmp_from);
1315                         g_free(tmp_fromname);
1316
1317 #define SKIP_ONE_ELEMENT() \
1318 { \
1319         g_return_val_if_fail(*cur_pos == ' ', NULL); \
1320         cur_pos = imap_parse_address(sock, cur_pos + 1, NULL, NULL, \
1321                                      line_str); \
1322 }
1323
1324                         /* skip sender and reply-to */
1325                         SKIP_ONE_ELEMENT();
1326                         SKIP_ONE_ELEMENT();
1327
1328                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1329                         cur_pos = imap_parse_address(sock, cur_pos + 1,
1330                                                      &tmp_to, NULL, line_str);
1331                         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
1332                         g_free(tmp_to);
1333
1334                         /* skip Cc and Bcc */
1335                         SKIP_ONE_ELEMENT();
1336                         SKIP_ONE_ELEMENT();
1337
1338 #undef SKIP_ONE_ELEMENT
1339
1340                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1341                         cur_pos = imap_parse_atom
1342                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1343                         if (buf[0] != '\0') {
1344                                 eliminate_parenthesis(buf, '(', ')');
1345                                 extract_parenthesis(buf, '<', '>');
1346                                 remove_space(buf);
1347                                 Xstrdup_a(inreplyto, buf, return NULL);
1348                         }
1349
1350                         g_return_val_if_fail(*cur_pos == ' ', NULL);
1351                         cur_pos = imap_parse_atom
1352                                 (sock, cur_pos, buf, sizeof(buf), line_str);
1353                         if (buf[0] != '\0') {
1354                                 extract_parenthesis(buf, '<', '>');
1355                                 remove_space(buf);
1356                                 Xstrdup_a(msgid, buf, return NULL);
1357                         }
1358
1359                         g_return_val_if_fail(*cur_pos == ')', NULL);
1360                         cur_pos++;
1361                 } else {
1362                         g_warning("invalid FETCH response: %s\n", cur_pos);
1363                         break;
1364                 }
1365
1366                 if (*cur_pos == '\0' || *cur_pos == ')') break;
1367                 n_element++;
1368         }
1369
1370         msginfo = g_new0(MsgInfo, 1);
1371         msginfo->msgnum = uid;
1372         msginfo->size = size;
1373         msginfo->date = g_strdup(date);
1374         msginfo->date_t = date_t;
1375         msginfo->subject = g_strdup(subject);
1376         msginfo->from = g_strdup(from);
1377         msginfo->fromname = g_strdup(fromname);
1378         msginfo->to = g_strdup(to);
1379         msginfo->inreplyto = g_strdup(inreplyto);
1380         msginfo->msgid = g_strdup(msgid);
1381         msginfo->flags = flags;
1382
1383         return msginfo;
1384 }
1385
1386 static gint imap_set_message_flags(IMAPSession *session,
1387                                    guint32 first_uid,
1388                                    guint32 last_uid,
1389                                    IMAPFlags flags,
1390                                    gboolean is_set)
1391 {
1392         GString *buf;
1393         gint ok;
1394
1395         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
1396
1397         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
1398         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
1399         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
1400         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
1401         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
1402
1403         if (buf->str[buf->len - 1] == ' ')
1404                 g_string_truncate(buf, buf->len - 1);
1405
1406         g_string_append_c(buf, ')');
1407
1408         ok = imap_cmd_store(SESSION(session)->sock, first_uid, last_uid,
1409                             buf->str);
1410         g_string_free(buf, TRUE);
1411
1412         return ok;
1413 }
1414
1415 static gint imap_select(IMAPSession *session, IMAPFolder *folder,
1416                         const gchar *path,
1417                         gint *exists, gint *recent, gint *unseen,
1418                         guint32 *uid_validity)
1419 {
1420         gchar *real_path;
1421         IMAPNameSpace *namespace;
1422         gint ok;
1423
1424         Xstrdup_a(real_path, path, return -1);
1425         namespace = imap_find_namespace(folder, path);
1426         if (namespace && namespace->separator)
1427                 imap_path_separator_subst(real_path, namespace->separator);
1428
1429         ok = imap_cmd_select(SESSION(session)->sock, real_path,
1430                              exists, recent, unseen, uid_validity);
1431         if (ok != IMAP_SUCCESS)
1432                 log_warning(_("can't select folder: %s\n"), real_path);
1433
1434         return ok;
1435 }
1436
1437 #define THROW(err) { ok = err; goto catch; }
1438
1439 static gint imap_get_uid(IMAPSession *session, gint msgnum, guint32 *uid)
1440 {
1441         gint ok;
1442         GPtrArray *argbuf;
1443         gchar *str;
1444         gint num;
1445
1446         *uid = 0;
1447         argbuf = g_ptr_array_new();
1448
1449         imap_cmd_gen_send(SESSION(session)->sock, "FETCH %d (UID)", msgnum);
1450         if ((ok = imap_cmd_ok(SESSION(session)->sock, argbuf)) != IMAP_SUCCESS)
1451                 THROW(ok);
1452
1453         str = search_array_contain_str(argbuf, "FETCH");
1454         if (!str) THROW(IMAP_ERROR);
1455
1456         if (sscanf(str, "%d FETCH (UID %d)", &num, uid) != 2 ||
1457             num != msgnum) {
1458                 g_warning("imap_get_uid(): invalid FETCH line.\n");
1459                 THROW(IMAP_ERROR);
1460         }
1461
1462 catch:
1463         ptr_array_free_strings(argbuf);
1464         g_ptr_array_free(argbuf, TRUE);
1465
1466         return ok;
1467 }
1468
1469 #undef THROW
1470
1471 #if 0
1472 static gint imap_status_uidnext(IMAPSession *session, IMAPFolder *folder,
1473                                 const gchar *path, guint32 *uid_next)
1474 {
1475         gchar *real_path;
1476         IMAPNameSpace *namespace;
1477         gint ok;
1478
1479         Xstrdup_a(real_path, path, return -1);
1480         namespace = imap_find_namespace(folder, path);
1481         if (namespace && namespace->separator)
1482                 imap_path_separator_subst(real_path, namespace->separator);
1483
1484         ok = imap_cmd_status(SESSION(session)->sock, real_path,
1485                              "UIDNEXT", uid_next);
1486         if (ok != IMAP_SUCCESS)
1487                 log_warning(_("can't get the next uid of folder: %s\n"),
1488                             real_path);
1489
1490         return ok;
1491 }
1492 #endif
1493
1494
1495 /* low-level IMAP4rev1 commands */
1496
1497 static gint imap_cmd_login(SockInfo *sock,
1498                            const gchar *user, const gchar *pass)
1499 {
1500         gint ok;
1501
1502         if (strchr(user, ' ') != NULL)
1503                 imap_cmd_gen_send(sock, "LOGIN \"%s\" %s", user, pass);
1504         else
1505                 imap_cmd_gen_send(sock, "LOGIN %s %s", user, pass);
1506
1507         ok = imap_cmd_ok(sock, NULL);
1508         if (ok != IMAP_SUCCESS)
1509                 log_warning(_("IMAP4 login failed.\n"));
1510
1511         return ok;
1512 }
1513
1514 static gint imap_cmd_logout(SockInfo *sock)
1515 {
1516         imap_cmd_gen_send(sock, "LOGOUT");
1517         return imap_cmd_ok(sock, NULL);
1518 }
1519
1520 static gint imap_cmd_noop(SockInfo *sock)
1521 {
1522         imap_cmd_gen_send(sock, "NOOP");
1523         return imap_cmd_ok(sock, NULL);
1524 }
1525
1526 #define THROW(err) { ok = err; goto catch; }
1527
1528 static gint imap_cmd_namespace(SockInfo *sock, gchar **ns_str)
1529 {
1530         gint ok;
1531         GPtrArray *argbuf;
1532         gchar *str;
1533
1534         argbuf = g_ptr_array_new();
1535
1536         imap_cmd_gen_send(sock, "NAMESPACE");
1537         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW(ok);
1538
1539         str = search_array_contain_str(argbuf, "NAMESPACE");
1540         if (!str) THROW(IMAP_ERROR);
1541
1542         *ns_str = g_strdup(str);
1543
1544 catch:
1545         ptr_array_free_strings(argbuf);
1546         g_ptr_array_free(argbuf, TRUE);
1547
1548         return ok;
1549 }
1550
1551 #undef THROW
1552
1553 static gint imap_cmd_list(SockInfo *sock, const gchar *ref,
1554                           const gchar *mailbox, GPtrArray *argbuf)
1555 {
1556         gchar *new_ref;
1557         gchar *new_mailbox;
1558
1559         if (!ref) ref = "\"\"";
1560         if (!mailbox) mailbox = "\"\"";
1561
1562         if (*ref != '"' && strchr(ref, ' ') != NULL)
1563                 new_ref = g_strdup_printf("\"%s\"", ref);
1564         else
1565                 new_ref = g_strdup(ref);
1566         if (*mailbox != '"' && strchr(mailbox, ' ') != NULL)
1567                 new_mailbox = g_strdup_printf("\"%s\"", mailbox);
1568         else
1569                 new_mailbox = g_strdup(mailbox);
1570
1571         imap_cmd_gen_send(sock, "LIST %s %s", new_ref, new_mailbox);
1572
1573         g_free(new_ref);
1574         g_free(new_mailbox);
1575
1576         return imap_cmd_ok(sock, argbuf);
1577 }
1578
1579 #define THROW goto catch
1580
1581 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
1582                             gint *exists, gint *recent, gint *unseen,
1583                             guint32 *uid_validity)
1584 {
1585         gint ok;
1586         gchar *resp_str;
1587         GPtrArray *argbuf;
1588
1589         *exists = *recent = *unseen = *uid_validity = 0;
1590         argbuf = g_ptr_array_new();
1591
1592         if (strchr(folder, ' ') != NULL)
1593                 imap_cmd_gen_send(sock, "SELECT \"%s\"", folder);
1594         else
1595                 imap_cmd_gen_send(sock, "SELECT %s", folder);
1596
1597         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
1598
1599         resp_str = search_array_contain_str(argbuf, "EXISTS");
1600         if (resp_str) {
1601                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
1602                         g_warning("imap_select(): invalid EXISTS line.\n");
1603                         THROW;
1604                 }
1605         }
1606
1607         resp_str = search_array_contain_str(argbuf, "RECENT");
1608         if (resp_str) {
1609                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
1610                         g_warning("imap_select(): invalid RECENT line.\n");
1611                         THROW;
1612                 }
1613         }
1614
1615         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
1616         if (resp_str) {
1617                 if (sscanf(resp_str, "OK [UIDVALIDITY %u] ", uid_validity)
1618                     != 1) {
1619                         g_warning("imap_select(): invalid UIDVALIDITY line.\n");
1620                         THROW;
1621                 }
1622         }
1623
1624         resp_str = search_array_contain_str(argbuf, "UNSEEN");
1625         if (resp_str) {
1626                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
1627                         g_warning("imap_select(): invalid UNSEEN line.\n");
1628                         THROW;
1629                 }
1630         }
1631
1632 catch:
1633         ptr_array_free_strings(argbuf);
1634         g_ptr_array_free(argbuf, TRUE);
1635
1636         return ok;
1637 }
1638
1639 #if 0
1640 static gint imap_cmd_status(SockInfo *sock, const gchar *folder,
1641                             const gchar *status, gint *value)
1642 {
1643         gint ok;
1644         GPtrArray *argbuf;
1645         gchar *str;
1646
1647         if (value) *value = 0;
1648         argbuf = g_ptr_array_new();
1649
1650         if (strchr(folder, ' ') != NULL)
1651                 imap_cmd_gen_send(sock, "STATUS \"%s\" (%s)", folder, status);
1652         else
1653                 imap_cmd_gen_send(sock, "STATUS %s (%s)", folder, status);
1654
1655         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS) THROW;
1656
1657         str = search_array_contain_str(argbuf, "STATUS");
1658         if (!str) THROW;
1659         str = strchr(str, '(');
1660         if (!str) THROW;
1661         str++;
1662         if (strncmp(str, status, strlen(status)) != 0) THROW;
1663         str += strlen(status);
1664         if (*str != ' ') THROW;
1665         str++;
1666         if (value) *value = atoi(str);
1667
1668 catch:
1669         ptr_array_free_strings(argbuf);
1670         g_ptr_array_free(argbuf, TRUE);
1671
1672         return ok;
1673 }
1674 #endif
1675
1676 #undef THROW
1677
1678 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
1679 {
1680         if (strchr(folder, ' ') != NULL)
1681                 imap_cmd_gen_send(sock, "CREATE \"%s\"", folder);
1682         else
1683                 imap_cmd_gen_send(sock, "CREATE %s", folder);
1684
1685         return imap_cmd_ok(sock, NULL);
1686 }
1687
1688 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
1689 {
1690         if (strchr(folder, ' ') != NULL)
1691                 imap_cmd_gen_send(sock, "DELETE \"%s\"", folder);
1692         else
1693                 imap_cmd_gen_send(sock, "DELETE %s", folder);
1694
1695         return imap_cmd_ok(sock, NULL);
1696 }
1697
1698 static gint imap_cmd_fetch(SockInfo *sock, guint32 uid, const gchar *filename)
1699 {
1700         gint ok;
1701         gchar buf[IMAPBUFSIZE];
1702         gchar *cur_pos;
1703         gchar size_str[32];
1704         glong size_num;
1705
1706         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
1707
1708         imap_cmd_gen_send(sock, "UID FETCH %d BODY[]", uid);
1709
1710         if (sock_gets(sock, buf, sizeof(buf)) < 0)
1711                 return IMAP_ERROR;
1712         strretchomp(buf);
1713         if (buf[0] != '*' || buf[1] != ' ')
1714                 return IMAP_ERROR;
1715         log_print("IMAP4< %s\n", buf);
1716
1717         cur_pos = strchr(buf, '{');
1718         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1719         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
1720         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1721         size_num = atol(size_str);
1722
1723         if (*cur_pos != '\0') return IMAP_ERROR;
1724
1725         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
1726                 return IMAP_ERROR;
1727
1728         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
1729                 return IMAP_ERROR;
1730
1731         if (buf[0] == '\0' || buf[strlen(buf) - 1] != ')')
1732                 return IMAP_ERROR;
1733
1734         ok = imap_cmd_ok(sock, NULL);
1735
1736         return ok;
1737 }
1738
1739 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
1740                             const gchar *file)
1741 {
1742         gint ok;
1743         gint size;
1744
1745         g_return_val_if_fail(file != NULL, IMAP_ERROR);
1746
1747         size = get_file_size(file);
1748         imap_cmd_gen_send(sock, "APPEND %s {%d}", destfolder, size);
1749         ok = imap_cmd_ok(sock, NULL);
1750         if (ok != IMAP_SUCCESS) {
1751                 log_warning(_("can't append %s to %s\n"), file, destfolder);
1752                 return -1;
1753         }
1754
1755         return ok;
1756 }
1757
1758 static gint imap_cmd_copy(SockInfo *sock, guint32 uid, const gchar *destfolder)
1759 {
1760         gint ok;
1761
1762         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
1763
1764         if (strchr(destfolder, ' ') != NULL)
1765                 imap_cmd_gen_send(sock, "UID COPY %d \"%s\"", uid, destfolder);
1766         else
1767                 imap_cmd_gen_send(sock, "UID COPY %d %s", uid, destfolder);
1768
1769         ok = imap_cmd_ok(sock, NULL);
1770         if (ok != IMAP_SUCCESS) {
1771                 log_warning(_("can't copy %d to %s\n"), uid, destfolder);
1772                 return -1;
1773         }
1774
1775         return ok;
1776 }
1777
1778 gint imap_cmd_envelope(SockInfo *sock, guint32 first_uid, guint32 last_uid)
1779 {
1780         imap_cmd_gen_send
1781                 (sock, "UID FETCH %d:%d (UID FLAGS RFC822.SIZE ENVELOPE)",
1782                  first_uid, last_uid);
1783
1784         return IMAP_SUCCESS;
1785 }
1786
1787 static gint imap_cmd_store(SockInfo *sock, guint32 first_uid, guint32 last_uid,
1788                            gchar *sub_cmd)
1789 {
1790         gint ok;
1791
1792         imap_cmd_gen_send(sock, "UID STORE %d:%d %s",
1793                           first_uid, last_uid, sub_cmd);
1794
1795         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1796                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
1797                             first_uid, last_uid, sub_cmd);
1798                 return ok;
1799         }
1800
1801         return IMAP_SUCCESS;
1802 }
1803
1804 static gint imap_cmd_expunge(SockInfo *sock)
1805 {
1806         gint ok;
1807
1808         imap_cmd_gen_send(sock, "EXPUNGE");
1809         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1810                 log_warning(_("error while imap command: EXPUNGE\n"));
1811                 return ok;
1812         }
1813
1814         return IMAP_SUCCESS;
1815 }
1816
1817 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
1818 {
1819         gint ok;
1820         gchar buf[IMAPBUFSIZE];
1821         gint cmd_num;
1822         gchar cmd_status[IMAPBUFSIZE];
1823
1824         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
1825                == IMAP_SUCCESS) {
1826                 if (buf[0] == '*' && buf[1] == ' ') {
1827                         if (argbuf)
1828                                 g_ptr_array_add(argbuf, g_strdup(buf + 2));
1829                         continue;
1830                 }
1831
1832                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
1833                         return IMAP_ERROR;
1834                 else if (cmd_num == imap_cmd_count &&
1835                          !strcmp(cmd_status, "OK")) {
1836                         if (argbuf)
1837                                 g_ptr_array_add(argbuf, g_strdup(buf));
1838                         return IMAP_SUCCESS;
1839                 } else
1840                         return IMAP_ERROR;
1841         }
1842
1843         return ok;
1844 }
1845
1846 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
1847 {
1848         gchar buf[IMAPBUFSIZE];
1849         gchar tmp[IMAPBUFSIZE];
1850         gchar *p;
1851         va_list args;
1852
1853         va_start(args, format);
1854         g_vsnprintf(tmp, sizeof(tmp), format, args);
1855         va_end(args);
1856
1857         imap_cmd_count++;
1858
1859         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
1860         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
1861                 *p = '\0';
1862                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
1863         } else
1864                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
1865
1866         sock_write(sock, buf, strlen(buf));
1867 }
1868
1869 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
1870 {
1871         if (sock_gets(sock, buf, size) == -1)
1872                 return IMAP_SOCKET;
1873
1874         strretchomp(buf);
1875
1876         log_print("IMAP4< %s\n", buf);
1877
1878         return IMAP_SUCCESS;
1879 }
1880
1881
1882 /* misc utility functions */
1883
1884 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
1885 {
1886         gchar *tmp;
1887
1888         dest[0] = '\0';
1889         tmp = strchr(src, ch);
1890         if (!tmp)
1891                 return NULL;
1892
1893         memcpy(dest, src, MIN(tmp - src, len - 1));
1894         dest[MIN(tmp - src, len - 1)] = '\0';
1895
1896         return tmp + 1;
1897 }
1898
1899 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
1900 {
1901         gint i;
1902
1903         for (i = 0; i < array->len; i++) {
1904                 gchar *tmp;
1905
1906                 tmp = g_ptr_array_index(array, i);
1907                 if (strstr(tmp, str) != NULL)
1908                         return tmp;
1909         }
1910
1911         return NULL;
1912 }
1913
1914 static void imap_path_separator_subst(gchar *str, gchar separator)
1915 {
1916         if (separator && separator != '/')
1917                 subst_char(str, '/', separator);
1918 }