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
  31 #include "intl.h"
  32 #include "imap.h"
  33 #include "socket.h"
  34 #include "recv.h"
  35 #include "procmsg.h"
  36 #include "procheader.h"
  37 #include "folder.h"
  38 #include "statusbar.h"
  39 #include "prefs_account.h"
  40 #include "codeconv.h"
  41 #include "utils.h"
  42
  43 #define IMAP4_PORT      143
  44
  45 static GList *session_list = NULL;
  46
  47 static gint imap_cmd_count = 0;
  48
  49 static IMAPSession *imap_session_connect_if_not (Folder         *folder);
  50
  51 static gint imap_do_copy                (Folder         *folder,
  52                                          FolderItem     *dest,
  53                                          MsgInfo        *msginfo,
  54                                          gboolean        remove_source);
  55 static gint imap_do_copy_msgs_with_dest (Folder         *folder,
  56                                          FolderItem     *dest,
  57                                          GSList         *msglist,
  58                                          gboolean        remove_source);
  59
  60 static GSList *imap_get_uncached_messages       (IMAPSession    *session,
  61                                                  FolderItem     *item,
  62                                                  gint            first,
  63                                                  gint            last);
  64 static GSList *imap_delete_cached_messages      (GSList         *mlist,
  65                                                  gint            first,
  66                                                  gint            last);
  67 static void imap_delete_all_cached_messages     (FolderItem     *item);
  68
  69 static SockInfo *imap_open              (const gchar    *server,
  70                                          gushort         port,
  71                                          gchar          *buf);
  72
  73 static gint imap_set_article_flags      (IMAPSession    *session,
  74                                          gint            first,
  75                                          gint            last,
  76                                          IMAPFlags       flag,
  77                                          gboolean        is_set);
  78
  79 static gchar *imap_parse_atom           (SockInfo *sock,
  80                                          gchar    *src,
  81                                          gchar    *dest,
  82                                          gchar    *orig_buf);
  83 static gchar *imap_parse_one_address    (SockInfo *sock,
  84                                          gchar    *start,
  85                                          gchar    *out_from_str,
  86                                          gchar    *out_fromname_str,
  87                                          gchar    *orig_buf);
  88 static gchar *imap_parse_address        (SockInfo *sock,
  89                                          gchar    *start,
  90                                          gchar   **out_from_str,
  91                                          gchar   **out_fromname_str,
  92                                          gchar    *orig_buf);
  93 static MsgFlags imap_parse_flags        (const gchar    *flag_str);
  94 static MsgInfo *imap_parse_envelope     (SockInfo *sock,
  95                                          gchar    *line_str);
  96
  97 /* low-level IMAP4rev1 commands */
  98 static gint imap_cmd_login      (SockInfo       *sock,
  99                                  const gchar    *user,
 100                                  const gchar    *pass);
 101 static gint imap_cmd_logout     (SockInfo       *sock);
 102 static gint imap_cmd_noop       (SockInfo       *sock);
 103 static gint imap_cmd_select     (SockInfo       *sock,
 104                                  const gchar    *folder,
 105                                  gint           *exists,
 106                                  gint           *recent,
 107                                  gint           *unseen,
 108                                  gulong         *uid);
 109 static gint imap_cmd_status     (SockInfo       *sock,
 110                                  const gchar    *folder,
 111                                  const gchar    *status);
 112 static gint imap_cmd_create     (SockInfo       *sock,
 113                                  const gchar    *folder);
 114 static gint imap_cmd_delete     (SockInfo       *sock,
 115                                  const gchar    *folder);
 116 static gint imap_cmd_envelope   (SockInfo       *sock,
 117                                  gint            first,
 118                                  gint            last);
 119 #if 0
 120 static gint imap_cmd_search     (SockInfo       *sock,
 121                                  GSList         *numlist);
 122 #endif
 123 static gint imap_cmd_fetch      (SockInfo       *sock,
 124                                  gint            num,
 125                                  const gchar    *filename);
 126 static gint imap_cmd_append     (SockInfo       *sock,
 127                                  const gchar    *destfolder,
 128                                  const gchar    *file);
 129 static gint imap_cmd_copy       (SockInfo       *sock,
 130                                  gint            num,
 131                                  const gchar    *destfolder);
 132 static gint imap_cmd_store      (SockInfo       *sock,
 133                                  gint            first,
 134                                  gint            last,
 135                                  gchar          *sub_cmd);
 136 static gint imap_cmd_expunge    (SockInfo       *sock);
 137
 138 static gint imap_cmd_ok         (SockInfo       *sock,
 139                                  GPtrArray      *argbuf);
 140 static void imap_cmd_gen_send   (SockInfo       *sock,
 141                                  const gchar    *format, ...);
 142 static gint imap_cmd_gen_recv   (SockInfo       *sock,
 143                                  gchar          *buf,
 144                                  gint            size);
 145
 146 /* misc utility functions */
 147 static gchar *strchr_cpy                (const gchar    *src,
 148                                          gchar           ch,
 149                                          gchar          *dest,
 150                                          gint            len);
 151 static gchar *search_array_contain_str  (GPtrArray      *array,
 152                                          gchar          *str);
 153 static void imap_path_subst_slash_to_dot(gchar *str);
 154
 155
 156 static IMAPSession *imap_session_connect_if_not(Folder *folder)
 157 {
 158         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 159
 160         g_return_val_if_fail(folder != NULL, NULL);
 161         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 162         g_return_val_if_fail(folder->account != NULL, NULL);
 163
 164         if (!rfolder->session) {
 165                 rfolder->session =
 166                         imap_session_new(folder->account->recv_server,
 167                                          IMAP4_PORT,
 168                                          folder->account->userid,
 169                                          folder->account->passwd);
 170                 statusbar_pop_all();
 171                 return IMAP_SESSION(rfolder->session);
 172         }
 173
 174         if (imap_cmd_noop(rfolder->session->sock) != IMAP_SUCCESS) {
 175                 log_warning(_("IMAP4 connection to %s:%d has been"
 176                               " disconnected. Reconnecting...\n"),
 177                             folder->account->recv_server, IMAP4_PORT);
 178                 session_destroy(rfolder->session);
 179                 rfolder->session =
 180                         imap_session_new(folder->account->recv_server,
 181                                          IMAP4_PORT, folder->account->userid,
 182                                          folder->account->passwd);
 183         }
 184
 185         statusbar_pop_all();
 186         return IMAP_SESSION(rfolder->session);
 187 }
 188
 189 Session *imap_session_new(const gchar *server, gushort port,
 190                           const gchar *user, const gchar *pass)
 191 {
 192         gchar buf[IMAPBUFSIZE];
 193         IMAPSession *session;
 194         SockInfo *imap_sock;
 195
 196         g_return_val_if_fail(server != NULL, NULL);
 197
 198         log_message(_("creating IMAP4 connection to %s:%d ...\n"),
 199                     server, port);
 200
 201         if ((imap_sock = imap_open(server, port, buf)) == NULL)
 202                 return NULL;
 203         if (imap_cmd_login(imap_sock, user, pass) != IMAP_SUCCESS) {
 204                 imap_cmd_logout(imap_sock);
 205                 sock_close(imap_sock);
 206                 return NULL;
 207         }
 208
 209         session = g_new(IMAPSession, 1);
 210         SESSION(session)->type      = SESSION_IMAP;
 211         SESSION(session)->server    = g_strdup(server);
 212         SESSION(session)->sock      = imap_sock;
 213         SESSION(session)->connected = TRUE;
 214         SESSION(session)->phase     = SESSION_READY;
 215         SESSION(session)->data      = NULL;
 216         session->mbox = NULL;
 217
 218         session_list = g_list_append(session_list, session);
 219
 220         return SESSION(session);
 221 }
 222
 223 void imap_session_destroy(IMAPSession *session)
 224 {
 225         sock_close(SESSION(session)->sock);
 226         SESSION(session)->sock = NULL;
 227
 228         g_free(session->mbox);
 229
 230         session_list = g_list_remove(session_list, session);
 231 }
 232
 233 void imap_session_destroy_all(void)
 234 {
 235         while (session_list != NULL) {
 236                 IMAPSession *session = (IMAPSession *)session_list->data;
 237
 238                 imap_cmd_logout(SESSION(session)->sock);
 239                 imap_session_destroy(session);
 240         }
 241 }
 242
 243 GSList *imap_get_msg_list(Folder *folder, FolderItem *item, gboolean use_cache)
 244 {
 245         GSList *mlist = NULL;
 246         IMAPSession *session;
 247         gint ok, exists = 0, recent = 0, unseen = 0, begin = 1;
 248         gulong uid = 0, last_uid;
 249
 250         g_return_val_if_fail(folder != NULL, NULL);
 251         g_return_val_if_fail(item != NULL, NULL);
 252         g_return_val_if_fail(folder->type == F_IMAP, NULL);
 253         g_return_val_if_fail(folder->account != NULL, NULL);
 254
 255         session = imap_session_connect_if_not(folder);
 256
 257         if (!session) {
 258                 mlist = procmsg_read_cache(item, FALSE);
 259                 item->last_num = procmsg_get_last_num_in_cache(mlist);
 260                 procmsg_set_flags(mlist, item);
 261                 statusbar_pop_all();
 262                 return mlist;
 263         }
 264
 265         last_uid = item->mtime;
 266
 267         ok = imap_cmd_select(SESSION(session)->sock, item->path,
 268                              &exists, &recent, &unseen, &uid);
 269         if (ok != IMAP_SUCCESS) {
 270                 log_warning(_("can't select folder: %s\n"), item->path);
 271                 statusbar_pop_all();
 272                 return NULL;
 273         }
 274
 275         if (use_cache) {
 276                 gint cache_last;
 277
 278                 mlist = procmsg_read_cache(item, FALSE);
 279                 procmsg_set_flags(mlist, item);
 280                 cache_last = procmsg_get_last_num_in_cache(mlist);
 281
 282                 /* calculating the range of envelope to get */
 283                 if (exists < cache_last) {
 284                         /* some messages are deleted (get all) */
 285                         begin = 1;
 286                 } else if (exists == cache_last) {
 287                         if (last_uid != 0 && last_uid != uid) {
 288                                 /* some recent but deleted (get all) */
 289                                 begin = 1;
 290                         } else {
 291                                 /* mailbox unchanged (get none)*/
 292                                 begin = -1;
 293                         }
 294                 } else {
 295                         if (exists == cache_last + recent) {
 296                                 /* some recent */
 297                                 begin = cache_last + 1;
 298                         } else {
 299                                 /* some recent but deleted (get all) */
 300                                 begin = 1;
 301                         }
 302                 }
 303
 304                 item->mtime = uid;
 305         }
 306
 307         if (1 < begin && begin <= exists) {
 308                 GSList *newlist;
 309
 310                 newlist = imap_get_uncached_messages
 311                         (session, item, begin, exists);
 312                 imap_delete_cached_messages(mlist, begin, INT_MAX);
 313                 mlist = g_slist_concat(mlist, newlist);
 314         } else if (begin == 1) {
 315                 if (begin <= exists)
 316                         mlist = imap_get_uncached_messages
 317                                 (session, item, begin, exists);
 318                 imap_delete_all_cached_messages(item);
 319         }
 320
 321         item->last_num = exists;
 322
 323         statusbar_pop_all();
 324
 325         return mlist;
 326 }
 327
 328 gchar *imap_fetch_msg(Folder *folder, FolderItem *item, gint num)
 329 {
 330         gchar *path, *filename;
 331         IMAPSession *session;
 332         gint ok;
 333
 334         g_return_val_if_fail(folder != NULL, NULL);
 335         g_return_val_if_fail(item != NULL, NULL);
 336
 337         session = imap_session_connect_if_not(folder);
 338
 339         path = folder_item_get_path(item);
 340         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 341         g_free(path);
 342
 343         if (is_file_exist(filename)) {
 344                 debug_print(_("message %d has been already cached.\n"), num);
 345                 return filename;
 346         }
 347
 348         if (!session) {
 349                 g_free(filename);
 350                 return NULL;
 351         }
 352
 353         debug_print(_("getting message %d...\n"), num);
 354         ok = imap_cmd_fetch(SESSION(session)->sock, num, filename);
 355
 356         statusbar_pop_all();
 357
 358         if (ok != IMAP_SUCCESS) {
 359                 g_warning(_("can't fetch message %d\n"), num);
 360                 g_free(filename);
 361                 return NULL;
 362         }
 363
 364         return filename;
 365 }
 366
 367 gint imap_add_msg(Folder *folder, FolderItem *dest, const gchar *file,
 368                   gboolean remove_source)
 369 {
 370         IMAPSession *session;
 371         gint ok;
 372
 373         g_return_val_if_fail(folder != NULL, -1);
 374         g_return_val_if_fail(dest != NULL, -1);
 375         g_return_val_if_fail(file != NULL, -1);
 376
 377         session = imap_session_connect_if_not(folder);
 378         if (!session)
 379                 return -1;
 380
 381         if (dest->last_num < 0) {
 382                 imap_scan_folder(folder, dest);
 383                 if (dest->last_num < 0) return -1;
 384         }
 385
 386         ok = imap_cmd_append(SESSION(session)->sock, dest->path, file);
 387         if (ok != IMAP_SUCCESS) {
 388                 g_warning(_("can't append message %s\n"), file);
 389                 return -1;
 390         }
 391
 392         if (remove_source) {
 393                 if (unlink(file) < 0)
 394                         FILE_OP_ERROR(file, "unlink");
 395         }
 396
 397         return dest->last_num;
 398 }
 399
 400 static gint imap_do_copy(Folder *folder, FolderItem *dest, MsgInfo *msginfo,
 401                          gboolean remove_source)
 402 {
 403         gchar *destdir;
 404         IMAPSession *session;
 405
 406         g_return_val_if_fail(folder != NULL, -1);
 407         g_return_val_if_fail(dest != NULL, -1);
 408         g_return_val_if_fail(msginfo != NULL, -1);
 409
 410         session = imap_session_connect_if_not(folder);
 411         if (!session) return -1;
 412
 413         if (msginfo->folder == dest) {
 414                 g_warning(_("the src folder is identical to the dest.\n"));
 415                 return -1;
 416         }
 417
 418         Xstrdup_a(destdir, dest->path, return -1);
 419         /* imap_path_subst_slash_to_dot(destdir); */
 420
 421         debug_print(_("%s message %s%c%d to %s ...\n"),
 422                     remove_source ? "Moving" : "Copying",
 423                     msginfo->folder->path, G_DIR_SEPARATOR,
 424                     msginfo->msgnum, destdir);
 425
 426         imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum, destdir);
 427
 428         if (remove_source) {
 429                 imap_set_article_flags(session, msginfo->msgnum, msginfo->msgnum,
 430                                        IMAP_FLAG_DELETED, TRUE);
 431                 imap_cmd_expunge(SESSION(session)->sock);
 432         }
 433
 434         return IMAP_SUCCESS;
 435 }
 436
 437 static gint imap_do_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 438                                         GSList *msglist,
 439                                         gboolean remove_source)
 440 {
 441         gchar *destdir;
 442         GSList *cur;
 443         MsgInfo *msginfo;
 444         IMAPSession *session;
 445
 446         g_return_val_if_fail(folder != NULL, -1);
 447         g_return_val_if_fail(dest != NULL, -1);
 448         g_return_val_if_fail(msglist != NULL, -1);
 449
 450         session = imap_session_connect_if_not(folder);
 451         if (!session) return -1;
 452
 453         Xstrdup_a(destdir, dest->path, return -1);
 454         /* imap_path_subst_slash_to_dot(destdir); */
 455
 456         for (cur = msglist; cur != NULL; cur = cur->next) {
 457                 msginfo = (MsgInfo *)cur->data;
 458
 459                 if (msginfo->folder == dest) {
 460                         g_warning(_("the src folder is identical to the dest.\n"));
 461                         continue;
 462                 }
 463
 464                 debug_print(_("%s message %s%c%d to %s ...\n"),
 465                             remove_source ? "Moving" : "Copying",
 466                             msginfo->folder->path, G_DIR_SEPARATOR,
 467                             msginfo->msgnum, destdir);
 468
 469                 imap_cmd_copy(SESSION(session)->sock, msginfo->msgnum,
 470                               destdir);
 471
 472                 if (remove_source) {
 473                         imap_set_article_flags
 474                                 (session, msginfo->msgnum, msginfo->msgnum,
 475                                  IMAP_FLAG_DELETED, TRUE);
 476                 }
 477         }
 478
 479         if (remove_source)
 480                 imap_cmd_expunge(SESSION(session)->sock);
 481
 482         return IMAP_SUCCESS;
 483
 484 }
 485
 486 gint imap_move_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 487 {
 488         return imap_do_copy(folder, dest, msginfo, TRUE);
 489 }
 490
 491 gint imap_move_msgs_with_dest(Folder *folder, FolderItem *dest,
 492                               GSList *msglist)
 493 {
 494         return imap_do_copy_msgs_with_dest(folder, dest, msglist, TRUE);
 495 }
 496
 497 gint imap_copy_msg(Folder *folder, FolderItem *dest, MsgInfo *msginfo)
 498 {
 499         return imap_do_copy(folder, dest, msginfo, FALSE);
 500 }
 501
 502 gint imap_copy_msgs_with_dest(Folder *folder, FolderItem *dest,
 503                               GSList *msglist)
 504 {
 505         return imap_do_copy_msgs_with_dest(folder, dest, msglist, FALSE);
 506 }
 507
 508 gint imap_remove_msg(Folder *folder, FolderItem *item, gint num)
 509 {
 510         gint exists, recent, unseen;
 511         gulong uid;
 512         gint ok;
 513         IMAPSession *session;
 514
 515         g_return_val_if_fail(folder != NULL, -1);
 516         g_return_val_if_fail(item != NULL, -1);
 517         g_return_val_if_fail(num > 0 && num <= item->last_num, -1);
 518
 519         session = imap_session_connect_if_not(folder);
 520         if (!session) return -1;
 521
 522         ok = imap_cmd_select(SESSION(session)->sock, item->path,
 523                              &exists, &recent, &unseen, &uid);
 524         if (ok != IMAP_SUCCESS) {
 525                 log_warning(_("can't select folder: %s\n"), item->path);
 526                 return ok;
 527         }
 528
 529         ok = imap_set_article_flags(IMAP_SESSION(REMOTE_FOLDER(folder)->session),
 530                                     num, num, IMAP_FLAG_DELETED, TRUE);
 531         if (ok != IMAP_SUCCESS) {
 532                 log_warning(_("can't set deleted flags: %d\n"), num);
 533                 return ok;
 534         }
 535
 536         ok = imap_cmd_expunge(SESSION(session)->sock);
 537         if (ok != IMAP_SUCCESS) {
 538                 log_warning(_("can't expunge\n"));
 539                 return ok;
 540         }
 541
 542         return IMAP_SUCCESS;
 543 }
 544
 545 gint imap_remove_all_msg(Folder *folder, FolderItem *item)
 546 {
 547         gint exists, recent, unseen;
 548         gulong uid;
 549         gint ok;
 550         IMAPSession *session;
 551
 552         g_return_val_if_fail(folder != NULL, -1);
 553         g_return_val_if_fail(item != NULL, -1);
 554
 555         session = imap_session_connect_if_not(folder);
 556         if (!session) return -1;
 557
 558         ok = imap_cmd_select(SESSION(session)->sock, item->path,
 559                              &exists, &recent, &unseen, &uid);
 560         if (ok != IMAP_SUCCESS) {
 561                 log_warning(_("can't select folder: %s\n"), item->path);
 562                 return ok;
 563         }
 564
 565         ok = imap_set_article_flags(session, 1, exists,
 566                                     IMAP_FLAG_DELETED, TRUE);
 567         if (ok != IMAP_SUCCESS) {
 568                 log_warning(_("can't set deleted flags: 1:%d\n"), exists);
 569                 return ok;
 570         }
 571
 572         ok = imap_cmd_expunge(SESSION(session)->sock);
 573         if (ok != IMAP_SUCCESS) {
 574                 log_warning(_("can't expunge\n"));
 575                 return ok;
 576         }
 577
 578         return IMAP_SUCCESS;
 579 }
 580
 581 void imap_scan_folder(Folder *folder, FolderItem *item)
 582 {
 583 }
 584
 585 FolderItem *imap_create_folder(Folder *folder, FolderItem *parent,
 586                                const gchar *name)
 587 {
 588         gchar *dirpath, *imappath;
 589         IMAPSession *session;
 590         FolderItem *new_item;
 591         gint ok;
 592
 593         g_return_val_if_fail(folder != NULL, NULL);
 594         g_return_val_if_fail(parent != NULL, NULL);
 595         g_return_val_if_fail(name != NULL, NULL);
 596
 597         session = imap_session_connect_if_not(folder);
 598         if (!session) return NULL;
 599
 600         if (parent->path)
 601                 dirpath = g_strconcat(parent->path, G_DIR_SEPARATOR_S, name,
 602                                       NULL);
 603         else
 604                 dirpath = g_strdup(name);
 605
 606         imappath = g_strdup(dirpath);
 607         /* imap_path_subst_slash_to_dot(imappath); */
 608
 609         if (strcmp(name, "INBOX") != 0) {
 610                 ok = imap_cmd_status(SESSION(session)->sock, imappath,
 611                                      "MESSAGES");
 612                 if (ok != IMAP_SUCCESS) {
 613                         ok = imap_cmd_create(SESSION(session)->sock, imappath);
 614                         statusbar_pop_all();
 615                         if (ok != IMAP_SUCCESS) {
 616                                 log_warning(_("can't create mailbox\n"));
 617                                 g_free(imappath);
 618                                 g_free(dirpath);
 619                                 return NULL;
 620                         }
 621                 }
 622                 statusbar_pop_all();
 623         }
 624
 625         new_item = folder_item_new(name, dirpath);
 626         folder_item_append(parent, new_item);
 627         g_free(imappath);
 628         g_free(dirpath);
 629
 630         return new_item;
 631 }
 632
 633 gint imap_remove_folder(Folder *folder, FolderItem *item)
 634 {
 635         gint ok;
 636         IMAPSession *session;
 637
 638         g_return_val_if_fail(folder != NULL, -1);
 639         g_return_val_if_fail(item != NULL, -1);
 640         g_return_val_if_fail(item->path != NULL, -1);
 641
 642         session = imap_session_connect_if_not(folder);
 643         if (!session) return -1;
 644
 645         ok = imap_cmd_delete(SESSION(session)->sock, item->path);
 646         statusbar_pop_all();
 647         if (ok != IMAP_SUCCESS) {
 648                 log_warning(_("can't delete mailbox\n"));
 649                 return -1;
 650         }
 651
 652         folder_item_remove(item);
 653
 654         return 0;
 655 }
 656
 657 static GSList *imap_get_uncached_messages(IMAPSession *session,
 658                                           FolderItem *item,
 659                                           gint first, gint last)
 660 {
 661         gchar buf[IMAPBUFSIZE];
 662         GSList *newlist = NULL;
 663         GSList *llast = NULL;
 664         MsgInfo *msginfo;
 665
 666         g_return_val_if_fail(session != NULL, NULL);
 667         g_return_val_if_fail(item != NULL, NULL);
 668         g_return_val_if_fail(item->folder != NULL, NULL);
 669         g_return_val_if_fail(item->folder->type == F_IMAP, NULL);
 670         g_return_val_if_fail(first <= last, NULL);
 671
 672         if (imap_cmd_envelope(SESSION(session)->sock, first, last)
 673             != IMAP_SUCCESS) {
 674                 log_warning(_("can't get envelope\n"));
 675                 return NULL;
 676         }
 677
 678         for (;;) {
 679                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 680                         log_warning(_("error occurred while getting envelope.\n"));
 681                         return newlist;
 682                 }
 683                 strretchomp(buf);
 684                 if (buf[0] != '*' || buf[1] != ' ') break;
 685
 686                 msginfo = imap_parse_envelope(SESSION(session)->sock, buf);
 687                 if (!msginfo) {
 688                         log_warning(_("can't parse envelope: %s\n"), buf);
 689                         continue;
 690                 }
 691
 692                 msginfo->folder = item;
 693
 694                 if (!newlist)
 695                         llast = newlist = g_slist_append(newlist, msginfo);
 696                 else {
 697                         llast = g_slist_append(llast, msginfo);
 698                         llast = llast->next;
 699                 }
 700         }
 701
 702         return newlist;
 703 }
 704
 705 static GSList *imap_delete_cached_messages(GSList *mlist,
 706                                            gint first, gint last)
 707 {
 708         GSList *cur, *next;
 709         MsgInfo *msginfo;
 710         gchar *cache_file;
 711
 712         for (cur = mlist; cur != NULL; ) {
 713                 next = cur->next;
 714
 715                 msginfo = (MsgInfo *)cur->data;
 716                 if (msginfo != NULL && first <= msginfo->msgnum &&
 717                     msginfo->msgnum <= last) {
 718                         debug_print(_("deleting message %d...\n"),
 719                                     msginfo->msgnum);
 720
 721                         cache_file = procmsg_get_message_file_path(msginfo);
 722                         if (is_file_exist(cache_file)) unlink(cache_file);
 723                         g_free(cache_file);
 724
 725                         procmsg_msginfo_free(msginfo);
 726                         mlist = g_slist_remove(mlist, msginfo);
 727                 }
 728
 729                 cur = next;
 730         }
 731
 732         return mlist;
 733 }
 734
 735 static void imap_delete_all_cached_messages(FolderItem *item)
 736 {
 737         gchar *dir;
 738
 739         g_return_if_fail(item != NULL);
 740         g_return_if_fail(item->folder != NULL);
 741         g_return_if_fail(item->folder->type == F_IMAP);
 742
 743         debug_print(_("\tDeleting all cached messages... "));
 744
 745         dir = folder_item_get_path(item);
 746         remove_all_numbered_files(dir);
 747         g_free(dir);
 748
 749         debug_print(_("done.\n"));
 750 }
 751
 752 static SockInfo *imap_open(const gchar *server, gushort port, gchar *buf)
 753 {
 754         SockInfo *sock;
 755
 756         if ((sock = sock_connect(server, port)) == NULL) {
 757                 log_warning(_("Can't connect to IMAP4 server: %s:%d\n"),
 758                             server, port);
 759                 return NULL;
 760         }
 761
 762         imap_cmd_count = 0;
 763
 764         if (imap_cmd_noop(sock) != IMAP_SUCCESS) {
 765                 sock_close(sock);
 766                 return NULL;
 767         }
 768
 769         return sock;
 770 }
 771
 772 static gchar *imap_parse_atom(SockInfo *sock, gchar *src, gchar *dest,
 773                               gchar *orig_buf)
 774 {
 775         gchar *cur_pos = src;
 776
 777         while (*cur_pos == ' ') cur_pos++;
 778
 779         if (!strncmp(cur_pos, "NIL", 3)) {
 780                 *dest = '\0';
 781                 cur_pos += 3;
 782         } else if (*cur_pos == '\"') {
 783                 gchar *p;
 784
 785                 p = strchr_cpy(cur_pos + 1, '\"', dest, IMAPBUFSIZE);
 786                 cur_pos = p ? p : cur_pos + 2;
 787         } else if (*cur_pos == '{') {
 788                 gchar buf[32];
 789                 gint len;
 790
 791                 cur_pos = strchr_cpy(cur_pos + 1, '}', buf, sizeof(buf));
 792                 len = atoi(buf);
 793
 794                 g_return_val_if_fail(orig_buf != NULL, cur_pos);
 795
 796                 if (sock_gets(sock, orig_buf, IMAPBUFSIZE) < 0)
 797                         return cur_pos;
 798                 strretchomp(orig_buf);
 799                 log_print("IMAP4< %s\n", orig_buf);
 800                 memcpy(dest, orig_buf, len);
 801                 dest[len] = '\0';
 802                 cur_pos = orig_buf + len;
 803         }
 804
 805         return cur_pos;
 806 }
 807
 808 static gchar *imap_parse_one_address(SockInfo *sock, gchar *start,
 809                                      gchar *out_from_str,
 810                                      gchar *out_fromname_str,
 811                                      gchar *orig_buf)
 812 {
 813         gchar buf[IMAPBUFSIZE];
 814         gchar *cur_pos = start;
 815
 816         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
 817         conv_unmime_header(out_fromname_str, 256, buf, NULL);
 818
 819         if (out_fromname_str[0] != '\0') {
 820                 strcat(out_from_str, "\"");
 821                 strcat(out_from_str, out_fromname_str);
 822                 strcat(out_from_str, "\"");
 823         }
 824
 825         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
 826
 827         strcat(out_from_str, " <");
 828
 829         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
 830         strcat(out_from_str, buf);
 831
 832         cur_pos = imap_parse_atom(sock, cur_pos, buf, orig_buf);
 833         strcat(out_from_str, "@");
 834         strcat(out_from_str, buf);
 835         strcat(out_from_str, ">");
 836
 837         while (*cur_pos == ' ') cur_pos++;
 838
 839         g_return_val_if_fail(*cur_pos == ')', cur_pos + 1);
 840
 841         return cur_pos + 1;
 842 }
 843
 844 static gchar *imap_parse_address(SockInfo *sock, gchar *start,
 845                                  gchar **out_from_str,
 846                                  gchar **out_fromname_str,
 847                                  gchar *orig_buf)
 848 {
 849         gchar buf[IMAPBUFSIZE];
 850         gchar name_buf[IMAPBUFSIZE];
 851         gchar *cur_pos = start;
 852         gboolean first = TRUE;
 853
 854         if (out_from_str)     *out_from_str     = NULL;
 855         if (out_fromname_str) *out_fromname_str = NULL;
 856         buf[0] = name_buf[0] = '\0';
 857
 858         if (!strncmp(cur_pos, "NIL", 3)) {
 859                 if (out_from_str)     *out_from_str     = g_strdup("");
 860                 if (out_fromname_str) *out_fromname_str = g_strdup("");
 861                 return cur_pos + 3;
 862         }
 863
 864         g_return_val_if_fail(*cur_pos == '(', NULL);
 865         cur_pos++;
 866
 867         for (;;) {
 868                 gchar ch = *cur_pos++;
 869                 if (ch == ')') break;
 870                 if (ch == '(') {
 871                         if (!first) strcat(buf, ", ");
 872                         first = FALSE;
 873                         cur_pos = imap_parse_one_address
 874                                 (sock, cur_pos, buf, name_buf, orig_buf);
 875                         if (!cur_pos) return NULL;
 876                 }
 877         }
 878
 879         if (out_from_str)     *out_from_str     = g_strdup(buf);
 880         if (out_fromname_str) *out_fromname_str = g_strdup(name_buf);
 881
 882         return cur_pos;
 883 }
 884
 885 static MsgFlags imap_parse_flags(const gchar *flag_str)
 886 {
 887         gchar buf[32];
 888         const gchar *cur_pos = flag_str;
 889         const gchar *last_pos;
 890         MsgFlags flags;
 891
 892         flags = 0;
 893         MSG_SET_FLAGS(flags, MSG_UNREAD|MSG_IMAP);
 894
 895         while (cur_pos != NULL) {
 896                 cur_pos = strchr(cur_pos, '\\');
 897                 if (cur_pos == NULL) break;
 898
 899                 last_pos = cur_pos + 1;
 900                 cur_pos = strchr_cpy(last_pos, ' ', buf, sizeof(buf));
 901                 if (cur_pos == NULL)
 902                         strncpy2(buf, last_pos, sizeof(buf));
 903
 904                 if (g_strcasecmp(buf, "Recent") == 0) {
 905                         MSG_SET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
 906                 } else if (g_strcasecmp(buf, "Seen") == 0) {
 907                         MSG_UNSET_FLAGS(flags, MSG_NEW|MSG_UNREAD);
 908                 } else if (g_strcasecmp(buf, "Deleted") == 0) {
 909                         MSG_SET_FLAGS(flags, MSG_DELETED);
 910                 } else if (g_strcasecmp(buf, "Flagged") == 0) {
 911                         MSG_SET_FLAGS(flags, MSG_MARKED);
 912                 }
 913         }
 914
 915         return flags;
 916 }
 917
 918 static MsgInfo *imap_parse_envelope(SockInfo *sock, gchar *line_str)
 919 {
 920         MsgInfo *msginfo;
 921         gchar buf[IMAPBUFSIZE];
 922         gchar tmp[IMAPBUFSIZE];
 923         gchar *cur_pos;
 924         gint msgnum;
 925         size_t size;
 926         gchar *date = NULL;
 927         time_t date_t;
 928         gchar *subject = NULL;
 929         gchar *tmp_from;
 930         gchar *tmp_fromname;
 931         gchar *from = NULL;
 932         gchar *fromname = NULL;
 933         gchar *tmp_to;
 934         gchar *to = NULL;
 935         gchar *inreplyto = NULL;
 936         gchar *msgid = NULL;
 937         MsgFlags flags;
 938
 939         log_print("IMAP4< %s\n", line_str);
 940
 941         g_return_val_if_fail(line_str != NULL, NULL);
 942         g_return_val_if_fail(line_str[0] == '*' && line_str[1] == ' ', NULL);
 943
 944         cur_pos = line_str + 2;
 945
 946 #define PARSE_ONE_ELEMENT(ch) \
 947 { \
 948         cur_pos = strchr_cpy(cur_pos, ch, buf, sizeof(buf)); \
 949         g_return_val_if_fail(cur_pos != NULL, NULL); \
 950 }
 951
 952         PARSE_ONE_ELEMENT(' ');
 953         msgnum = atoi(buf);
 954
 955         PARSE_ONE_ELEMENT(' ');
 956         g_return_val_if_fail(!strcmp(buf, "FETCH"), NULL);
 957
 958         PARSE_ONE_ELEMENT(' ');
 959         g_return_val_if_fail(!strcmp(buf, "(FLAGS"), NULL);
 960
 961         PARSE_ONE_ELEMENT(')');
 962         g_return_val_if_fail(*buf == '(', NULL);
 963         flags = imap_parse_flags(buf + 1);
 964
 965         g_return_val_if_fail(*cur_pos == ' ', NULL);
 966         g_return_val_if_fail
 967                 ((cur_pos = strchr_cpy(cur_pos + 1, ' ', buf, sizeof(buf))),
 968                  NULL);
 969         g_return_val_if_fail(!strcmp(buf, "RFC822.SIZE"), NULL);
 970
 971         PARSE_ONE_ELEMENT(' ');
 972         size = atoi(buf);
 973
 974         PARSE_ONE_ELEMENT(' ');
 975         g_return_val_if_fail(!strcmp(buf, "ENVELOPE"), NULL);
 976
 977         g_return_val_if_fail(*cur_pos == '(', NULL);
 978         cur_pos = imap_parse_atom(sock, cur_pos + 1, buf, line_str);
 979         Xstrdup_a(date, buf, return NULL);
 980         date_t = procheader_date_parse(NULL, date, 0);
 981
 982         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
 983         if (buf[0] != '\0') {
 984                 conv_unmime_header(tmp, sizeof(tmp), buf, NULL);
 985                 Xstrdup_a(subject, tmp, return NULL);
 986         }
 987
 988         g_return_val_if_fail(*cur_pos == ' ', NULL);
 989         cur_pos = imap_parse_address(sock, cur_pos + 1,
 990                                      &tmp_from, &tmp_fromname, line_str);
 991         Xstrdup_a(from, tmp_from,
 992                   {g_free(tmp_from); g_free(tmp_fromname); return NULL;});
 993         Xstrdup_a(fromname, tmp_fromname,
 994                   {g_free(tmp_from); g_free(tmp_fromname); return NULL;});
 995         g_free(tmp_from);
 996         g_free(tmp_fromname);
 997
 998 #define SKIP_ONE_ELEMENT() \
 999 { \
1000         g_return_val_if_fail(*cur_pos == ' ', NULL); \
1001         cur_pos = imap_parse_address(sock, cur_pos + 1, \
1002                                      NULL, NULL, line_str); \
1003 }
1004
1005         /* skip sender and reply-to */
1006         SKIP_ONE_ELEMENT();
1007         SKIP_ONE_ELEMENT();
1008
1009         g_return_val_if_fail(*cur_pos == ' ', NULL);
1010         cur_pos = imap_parse_address(sock, cur_pos + 1, &tmp_to, NULL, line_str);
1011         Xstrdup_a(to, tmp_to, {g_free(tmp_to); return NULL;});
1012         g_free(tmp_to);
1013
1014         /* skip Cc and Bcc */
1015         SKIP_ONE_ELEMENT();
1016         SKIP_ONE_ELEMENT();
1017
1018 #undef SKIP_ONE_ELEMENT
1019
1020         g_return_val_if_fail(*cur_pos == ' ', NULL);
1021         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
1022         if (buf[0] != '\0') {
1023                 eliminate_parenthesis(buf, '(', ')');
1024                 extract_parenthesis(buf, '<', '>');
1025                 remove_space(buf);
1026                 Xstrdup_a(inreplyto, buf, return NULL);
1027         }
1028
1029         g_return_val_if_fail(*cur_pos == ' ', NULL);
1030         cur_pos = imap_parse_atom(sock, cur_pos, buf, line_str);
1031         if (buf[0] != '\0') {
1032                 extract_parenthesis(buf, '<', '>');
1033                 remove_space(buf);
1034                 Xstrdup_a(msgid, buf, return NULL);
1035         }
1036
1037         msginfo = g_new0(MsgInfo, 1);
1038         msginfo->msgnum = msgnum;
1039         msginfo->size = size;
1040         msginfo->date = g_strdup(date);
1041         msginfo->date_t = date_t;
1042         msginfo->subject = g_strdup(subject);
1043         msginfo->from = g_strdup(from);
1044         msginfo->fromname = g_strdup(fromname);
1045         msginfo->to = g_strdup(to);
1046         msginfo->inreplyto = g_strdup(inreplyto);
1047         msginfo->msgid = g_strdup(msgid);
1048         msginfo->flags = flags;
1049
1050         return msginfo;
1051 }
1052
1053 static gint imap_set_article_flags(IMAPSession *session,
1054                                    gint first,
1055                                    gint last,
1056                                    IMAPFlags flags,
1057                                    gboolean is_set)
1058 {
1059         GString *buf;
1060         gint ok;
1061
1062         buf = g_string_new(is_set ? "+FLAGS (" : "-FLAGS (");
1063
1064         if (IMAP_IS_SEEN(flags))        g_string_append(buf, "\\Seen ");
1065         if (IMAP_IS_ANSWERED(flags))    g_string_append(buf, "\\Answered ");
1066         if (IMAP_IS_FLAGGED(flags))     g_string_append(buf, "\\Flagged ");
1067         if (IMAP_IS_DELETED(flags))     g_string_append(buf, "\\Deleted ");
1068         if (IMAP_IS_DRAFT(flags))       g_string_append(buf, "\\Draft");
1069
1070         if (buf->str[buf->len - 1] == ' ')
1071                 g_string_truncate(buf, buf->len - 1);
1072
1073         g_string_append_c(buf, ')');
1074
1075         ok = imap_cmd_store(SESSION(session)->sock, first, last, buf->str);
1076         g_string_free(buf, TRUE);
1077
1078         return ok;
1079 }
1080
1081
1082
1083 static gint imap_cmd_login(SockInfo *sock,
1084                            const gchar *user, const gchar *pass)
1085 {
1086         gint ok;
1087
1088         imap_cmd_gen_send(sock, "LOGIN \"%s\" %s", user, pass);
1089         ok = imap_cmd_ok(sock, NULL);
1090         if (ok != IMAP_SUCCESS)
1091                 log_warning(_("IMAP4 login failed.\n"));
1092
1093         return ok;
1094 }
1095
1096 static gint imap_cmd_logout(SockInfo *sock)
1097 {
1098         imap_cmd_gen_send(sock, "LOGOUT");
1099         return imap_cmd_ok(sock, NULL);
1100 }
1101
1102 static gint imap_cmd_noop(SockInfo *sock)
1103 {
1104         imap_cmd_gen_send(sock, "NOOP");
1105         return imap_cmd_ok(sock, NULL);
1106 }
1107
1108 static gint imap_cmd_select(SockInfo *sock, const gchar *folder,
1109                             gint *exists, gint *recent, gint *unseen,
1110                             gulong *uid)
1111 {
1112         gint ok;
1113         gchar *resp_str;
1114         GPtrArray *argbuf;
1115         gchar *imappath;
1116
1117         *exists = *recent = *unseen = *uid = 0;
1118         argbuf = g_ptr_array_new();
1119
1120         Xstrdup_a(imappath, folder, return -1);
1121         /* imap_path_subst_slash_to_dot(imappath); */
1122
1123         imap_cmd_gen_send(sock, "SELECT \"%s\"", imappath);
1124         if ((ok = imap_cmd_ok(sock, argbuf)) != IMAP_SUCCESS)
1125                 goto bail;
1126
1127         resp_str = search_array_contain_str(argbuf, "EXISTS");
1128         if (resp_str) {
1129                 if (sscanf(resp_str,"%d EXISTS", exists) != 1) {
1130                         g_warning("imap_select(): invalid EXISTS line.\n");
1131                         goto bail;
1132                 }
1133         }
1134
1135         resp_str = search_array_contain_str(argbuf, "RECENT");
1136         if (resp_str) {
1137                 if (sscanf(resp_str, "%d RECENT", recent) != 1) {
1138                         g_warning("imap_select(): invalid RECENT line.\n");
1139                         goto bail;
1140                 }
1141         }
1142
1143         resp_str = search_array_contain_str(argbuf, "UIDVALIDITY");
1144         if (resp_str) {
1145                 if (sscanf(resp_str, "OK [UIDVALIDITY %lu] ", uid) != 1) {
1146                         g_warning("imap_select(): invalid UIDVALIDITY line.\n");
1147                         goto bail;
1148                 }
1149         }
1150
1151         resp_str = search_array_contain_str(argbuf, "UNSEEN");
1152         if (resp_str) {
1153                 if (sscanf(resp_str, "OK [UNSEEN %d] ", unseen) != 1) {
1154                         g_warning("imap_select(): invalid UNSEEN line.\n");
1155                         goto bail;
1156                 }
1157         }
1158
1159 bail:
1160         ptr_array_free_strings(argbuf);
1161         g_ptr_array_free(argbuf, TRUE);
1162
1163         return ok;
1164 }
1165
1166 static gint imap_cmd_status(SockInfo *sock, const gchar *folder,
1167                             const gchar *status)
1168 {
1169         imap_cmd_gen_send(sock, "STATUS \"%s\" (%s)", folder, status);
1170         return imap_cmd_ok(sock, NULL);
1171 }
1172
1173 static gint imap_cmd_create(SockInfo *sock, const gchar *folder)
1174 {
1175         imap_cmd_gen_send(sock, "CREATE \"%s\"", folder);
1176         return imap_cmd_ok(sock, NULL);
1177 }
1178
1179 static gint imap_cmd_delete(SockInfo *sock, const gchar *folder)
1180 {
1181         imap_cmd_gen_send(sock, "DELETE \"%s\"", folder);
1182         return imap_cmd_ok(sock, NULL);
1183 }
1184
1185 static gint imap_cmd_fetch(SockInfo *sock, gint num, const gchar *filename)
1186 {
1187         gint ok;
1188         gchar buf[IMAPBUFSIZE];
1189         gchar *cur_pos;
1190         gchar size_str[32];
1191         glong size_num;
1192
1193         g_return_val_if_fail(filename != NULL, IMAP_ERROR);
1194
1195         imap_cmd_gen_send(sock, "FETCH %d BODY[]", num);
1196
1197         if (sock_gets(sock, buf, sizeof(buf)) < 0)
1198                 return IMAP_ERROR;
1199         strretchomp(buf);
1200         if (buf[0] != '*' || buf[1] != ' ')
1201                 return IMAP_ERROR;
1202         log_print("IMAP4< %s\n", buf);
1203
1204         cur_pos = strchr(buf, '{');
1205         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1206         cur_pos = strchr_cpy(cur_pos + 1, '}', size_str, sizeof(size_str));
1207         g_return_val_if_fail(cur_pos != NULL, IMAP_ERROR);
1208         size_num = atol(size_str);
1209
1210         if (*cur_pos != '\0') return IMAP_ERROR;
1211
1212         if (recv_bytes_write_to_file(sock, size_num, filename) != 0)
1213                 return IMAP_ERROR;
1214
1215         if (imap_cmd_gen_recv(sock, buf, sizeof(buf)) != IMAP_SUCCESS)
1216                 return IMAP_ERROR;
1217
1218         if (buf[0] != ')')
1219                 return IMAP_ERROR;
1220
1221         ok = imap_cmd_ok(sock, NULL);
1222
1223         return ok;
1224 }
1225
1226 static gint imap_cmd_append(SockInfo *sock, const gchar *destfolder,
1227                             const gchar *file)
1228 {
1229         gint ok;
1230         gint size;
1231
1232         g_return_val_if_fail(file != NULL, IMAP_ERROR);
1233
1234         imap_cmd_gen_send(sock, "APPEND %s {%d}", destfolder, size);
1235         ok = imap_cmd_ok(sock, NULL);
1236         if (ok != IMAP_SUCCESS) {
1237                 log_warning(_("can't append %s to %s\n"), file, destfolder);
1238                 return -1;
1239         }
1240
1241         return ok;
1242 }
1243
1244 static gint imap_cmd_copy(SockInfo *sock, gint num, const gchar *destfolder)
1245 {
1246         gint ok;
1247
1248         g_return_val_if_fail(destfolder != NULL, IMAP_ERROR);
1249
1250         imap_cmd_gen_send(sock, "COPY %d %s", num, destfolder);
1251         ok = imap_cmd_ok(sock, NULL);
1252         if (ok != IMAP_SUCCESS) {
1253                 log_warning(_("can't copy %d to %s\n"), num, destfolder);
1254                 return -1;
1255         }
1256
1257         return ok;
1258 }
1259
1260
1261 gint imap_cmd_envelope(SockInfo *sock, gint first, gint last)
1262 {
1263         imap_cmd_gen_send(sock, "FETCH %d:%d (FLAGS RFC822.SIZE ENVELOPE)",
1264                           first, last);
1265
1266         return IMAP_SUCCESS;
1267 }
1268
1269 static gint imap_cmd_store(SockInfo *sock, gint first, gint last,
1270                            gchar *sub_cmd)
1271 {
1272         gint ok;
1273
1274         imap_cmd_gen_send(sock, "STORE %d:%d %s", first, last, sub_cmd);
1275
1276         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1277                 log_warning(_("error while imap command: STORE %d:%d %s\n"),
1278                             first, last, sub_cmd);
1279                 return ok;
1280         }
1281
1282         return IMAP_SUCCESS;
1283 }
1284
1285 static gint imap_cmd_expunge(SockInfo *sock)
1286 {
1287         gint ok;
1288
1289         imap_cmd_gen_send(sock, "EXPUNGE");
1290         if ((ok = imap_cmd_ok(sock, NULL)) != IMAP_SUCCESS) {
1291                 log_warning(_("error while imap command: EXPUNGE\n"));
1292                 return ok;
1293         }
1294
1295         return IMAP_SUCCESS;
1296 }
1297
1298 static gint imap_cmd_ok(SockInfo *sock, GPtrArray *argbuf)
1299 {
1300         gint ok;
1301         gchar buf[IMAPBUFSIZE];
1302         gint cmd_num;
1303         gchar cmd_status[IMAPBUFSIZE];
1304
1305         while ((ok = imap_cmd_gen_recv(sock, buf, sizeof(buf)))
1306                == IMAP_SUCCESS) {
1307                 if (buf[0] == '*' && buf[1] == ' ') {
1308                         if (argbuf)
1309                                 g_ptr_array_add(argbuf, g_strdup(&buf[2]));
1310                         continue;
1311                 }
1312
1313                 if (sscanf(buf, "%d %s", &cmd_num, cmd_status) < 2)
1314                         return IMAP_ERROR;
1315                 else if (cmd_num == imap_cmd_count &&
1316                          !strcmp(cmd_status, "OK")) {
1317                         if (argbuf)
1318                                 g_ptr_array_add(argbuf, g_strdup(buf));
1319                         return IMAP_SUCCESS;
1320                 } else
1321                         return IMAP_ERROR;
1322         }
1323
1324         return ok;
1325 }
1326
1327 static void imap_cmd_gen_send(SockInfo *sock, const gchar *format, ...)
1328 {
1329         gchar buf[IMAPBUFSIZE];
1330         gchar tmp[IMAPBUFSIZE];
1331         gchar *p;
1332         va_list args;
1333
1334         va_start(args, format);
1335         g_vsnprintf(tmp, sizeof(tmp), format, args);
1336         va_end(args);
1337
1338         imap_cmd_count++;
1339
1340         g_snprintf(buf, sizeof(buf), "%d %s\r\n", imap_cmd_count, tmp);
1341         if (!strncasecmp(tmp, "LOGIN ", 6) && (p = strchr(tmp + 6, ' '))) {
1342                 *(p + 1) = '\0';
1343                 log_print("IMAP4> %d %s ********\n", imap_cmd_count, tmp);
1344         } else
1345                 log_print("IMAP4> %d %s\n", imap_cmd_count, tmp);
1346
1347         sock_write(sock, buf, strlen(buf));
1348 }
1349
1350 static gint imap_cmd_gen_recv(SockInfo *sock, gchar *buf, gint size)
1351 {
1352         if (sock_gets(sock, buf, size) == -1)
1353                 return IMAP_SOCKET;
1354
1355         strretchomp(buf);
1356
1357         log_print("IMAP4< %s\n", buf);
1358
1359         return IMAP_SUCCESS;
1360 }
1361
1362
1363 /* misc utility functions */
1364
1365 static gchar *strchr_cpy(const gchar *src, gchar ch, gchar *dest, gint len)
1366 {
1367         gchar *tmp;
1368
1369         dest[0] = '\0';
1370         tmp = strchr(src, ch);
1371         if (!tmp || tmp == src)
1372                 return NULL;
1373
1374         memcpy(dest, src, MIN(tmp - src, len - 1));
1375         dest[MIN(tmp - src, len - 1)] = '\0';
1376
1377         return tmp + 1;
1378 }
1379
1380 static gchar *search_array_contain_str(GPtrArray *array, gchar *str)
1381 {
1382         gint i;
1383
1384         for (i = 0; i < array->len; i++) {
1385                 gchar *tmp;
1386
1387                 tmp = g_ptr_array_index(array, i);
1388                 if (strstr(tmp, str) != NULL)
1389                         return tmp;
1390         }
1391
1392         return NULL;
1393 }
1394
1395 static void imap_path_subst_slash_to_dot(gchar *str)
1396 {
1397         subst_char(str, '/', '.');
1398 }