src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2007 Hiroyuki Yamamoto and the Claws Mail team
   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 3 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, see <http://www.gnu.org/licenses/>.
  17  *
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #ifdef HAVE_LIBETPAN
  25
  26 #include "defs.h"
  27
  28 #include <glib.h>
  29 #include <glib/gi18n.h>
  30 #include <stdio.h>
  31 #include <string.h>
  32 #include <stdlib.h>
  33 #include <dirent.h>
  34 #include <unistd.h>
  35 #include <time.h>
  36 #include <libetpan/libetpan.h>
  37
  38 #include "nntp-thread.h"
  39 #include "news.h"
  40 #include "news.h"
  41 #include "news_gtk.h"
  42 #include "socket.h"
  43 #include "recv.h"
  44 #include "procmsg.h"
  45 #include "procheader.h"
  46 #include "folder.h"
  47 #include "session.h"
  48 #include "statusbar.h"
  49 #include "codeconv.h"
  50 #include "utils.h"
  51 #include "prefs_common.h"
  52 #include "prefs_account.h"
  53 #include "inputdialog.h"
  54 #include "log.h"
  55 #include "progressindicator.h"
  56 #include "remotefolder.h"
  57 #include "alertpanel.h"
  58 #include "inc.h"
  59 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
  60 #  include "ssl.h"
  61 #endif
  62
  63 #define NNTP_PORT       119
  64 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
  65 #define NNTPS_PORT      563
  66 #endif
  67
  68 typedef struct _NewsFolder      NewsFolder;
  69 typedef struct _NewsSession     NewsSession;
  70
  71 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  72 #define NEWS_SESSION(obj)       ((NewsSession *)obj)
  73
  74 struct _NewsFolder
  75 {
  76         RemoteFolder rfolder;
  77
  78         gboolean use_auth;
  79         gboolean lock_count;
  80         guint refcnt;
  81 };
  82
  83 struct _NewsSession
  84 {
  85         Session session;
  86
  87         gchar *group;
  88 };
  89
  90 static void news_folder_init(Folder *folder, const gchar *name,
  91                              const gchar *path);
  92
  93 static Folder   *news_folder_new        (const gchar    *name,
  94                                          const gchar    *folder);
  95 static void      news_folder_destroy    (Folder         *folder);
  96
  97 static gchar *news_fetch_msg            (Folder         *folder,
  98                                          FolderItem     *item,
  99                                          gint            num);
 100 static void news_remove_cached_msg      (Folder         *folder,
 101                                          FolderItem     *item,
 102                                          MsgInfo        *msginfo);
 103 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
 104 static Session *news_session_new         (Folder        *folder,
 105                                           const gchar   *server,
 106                                           gushort        port,
 107                                           const gchar   *userid,
 108                                           const gchar   *passwd,
 109                                           SSLType        ssl_type);
 110 #else
 111 static Session *news_session_new         (Folder        *folder,
 112                                           const gchar   *server,
 113                                           gushort        port,
 114                                           const gchar   *userid,
 115                                           const gchar   *passwd);
 116 #endif
 117
 118 static gint news_get_article             (Folder        *folder,
 119                                           gint           num,
 120                                           gchar         *filename);
 121
 122 static gint news_select_group            (Folder        *folder,
 123                                           const gchar   *group,
 124                                           gint          *num,
 125                                           gint          *first,
 126                                           gint          *last);
 127 static MsgInfo *news_parse_xover         (struct newsnntp_xover_resp_item *item);
 128 static gchar *news_parse_xhdr            (clist         *list,
 129                                           MsgInfo       *msginfo);
 130 static gint news_get_num_list                    (Folder        *folder,
 131                                           FolderItem    *item,
 132                                           GSList       **list,
 133                                           gboolean      *old_uids_valid);
 134 static MsgInfo *news_get_msginfo                 (Folder        *folder,
 135                                           FolderItem    *item,
 136                                           gint           num);
 137 static GSList *news_get_msginfos                 (Folder        *folder,
 138                                           FolderItem    *item,
 139                                           GSList        *msgnum_list);
 140 static gboolean news_scan_required               (Folder        *folder,
 141                                           FolderItem    *item);
 142
 143 static gchar *news_folder_get_path       (Folder        *folder);
 144 static gchar *news_item_get_path                 (Folder        *folder,
 145                                           FolderItem    *item);
 146 static void news_synchronise             (FolderItem    *item, gint days);
 147 static int news_remove_msg               (Folder        *folder,
 148                                           FolderItem    *item,
 149                                           gint           msgnum);
 150 static gint news_remove_folder           (Folder        *folder,
 151                                           FolderItem    *item);
 152 static FolderClass news_class;
 153
 154 FolderClass *news_get_class(void)
 155 {
 156         if (news_class.idstr == NULL) {
 157                 news_class.type = F_NEWS;
 158                 news_class.idstr = "news";
 159                 news_class.uistr = "News";
 160
 161                 /* Folder functions */
 162                 news_class.new_folder = news_folder_new;
 163                 news_class.destroy_folder = news_folder_destroy;
 164
 165                 /* FolderItem functions */
 166                 news_class.item_get_path = news_item_get_path;
 167                 news_class.get_num_list = news_get_num_list;
 168                 news_class.scan_required = news_scan_required;
 169                 news_class.remove_folder = news_remove_folder;
 170
 171                 /* Message functions */
 172                 news_class.get_msginfo = news_get_msginfo;
 173                 news_class.get_msginfos = news_get_msginfos;
 174                 news_class.fetch_msg = news_fetch_msg;
 175                 news_class.synchronise = news_synchronise;
 176                 news_class.remove_msg = news_remove_msg;
 177                 news_class.remove_cached_msg = news_remove_cached_msg;
 178         };
 179
 180         return &news_class;
 181 }
 182
 183 guint nntp_folder_get_refcnt(Folder *folder)
 184 {
 185         return ((NewsFolder *)folder)->refcnt;
 186 }
 187
 188 void nntp_folder_ref(Folder *folder)
 189 {
 190         ((NewsFolder *)folder)->refcnt++;
 191 }
 192
 193 void nntp_folder_unref(Folder *folder)
 194 {
 195         if (((NewsFolder *)folder)->refcnt > 0)
 196                 ((NewsFolder *)folder)->refcnt--;
 197 }
 198
 199 static int news_remove_msg               (Folder        *folder,
 200                                           FolderItem    *item,
 201                                           gint           msgnum)
 202 {
 203         gchar *path, *filename;
 204
 205         g_return_val_if_fail(folder != NULL, -1);
 206         g_return_val_if_fail(item != NULL, -1);
 207
 208         path = folder_item_get_path(item);
 209         if (!is_dir_exist(path))
 210                 make_dir_hier(path);
 211
 212         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
 213         g_free(path);
 214         g_unlink(filename);
 215         g_free(filename);
 216         return 0;
 217 }
 218
 219 static void news_folder_lock(NewsFolder *folder)
 220 {
 221         folder->lock_count++;
 222 }
 223
 224 static void news_folder_unlock(NewsFolder *folder)
 225 {
 226         if (folder->lock_count > 0)
 227                 folder->lock_count--;
 228 }
 229
 230 int news_folder_locked(Folder *folder)
 231 {
 232         if (folder == NULL)
 233                 return 0;
 234
 235         return NEWS_FOLDER(folder)->lock_count;
 236 }
 237
 238 static Folder *news_folder_new(const gchar *name, const gchar *path)
 239 {
 240         Folder *folder;
 241
 242         folder = (Folder *)g_new0(NewsFolder, 1);
 243         folder->klass = &news_class;
 244         news_folder_init(folder, name, path);
 245
 246         return folder;
 247 }
 248
 249 static void news_folder_destroy(Folder *folder)
 250 {
 251         gchar *dir;
 252
 253         while (nntp_folder_get_refcnt(folder) > 0)
 254                 gtk_main_iteration();
 255
 256         dir = news_folder_get_path(folder);
 257         if (is_dir_exist(dir))
 258                 remove_dir_recursive(dir);
 259         g_free(dir);
 260
 261         nntp_done(folder);
 262         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 263 }
 264
 265 static void news_folder_init(Folder *folder, const gchar *name,
 266                              const gchar *path)
 267 {
 268         folder_remote_folder_init(folder, name, path);
 269 }
 270
 271 static void news_session_destroy(Session *session)
 272 {
 273         NewsSession *news_session = NEWS_SESSION(session);
 274
 275         g_return_if_fail(session != NULL);
 276
 277         if (news_session->group)
 278                 g_free(news_session->group);
 279 }
 280
 281 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
 282 static Session *news_session_new(Folder *folder, const gchar *server, gushort port,
 283                                  const gchar *userid, const gchar *passwd,
 284                                  SSLType ssl_type)
 285 #else
 286 static Session *news_session_new(Folder *folder, const gchar *server, gushort port,
 287                                  const gchar *userid, const gchar *passwd)
 288 #endif
 289 {
 290         NewsSession *session;
 291         int r = 0;
 292         g_return_val_if_fail(server != NULL, NULL);
 293
 294         log_message(LOG_PROTOCOL, _("creating NNTP connection to %s:%d ...\n"), server, port);
 295
 296         session = g_new0(NewsSession, 1);
 297         session_init(SESSION(session));
 298         SESSION(session)->type             = SESSION_NEWS;
 299         SESSION(session)->server           = g_strdup(server);
 300         SESSION(session)->sock             = NULL;
 301         SESSION(session)->destroy          = news_session_destroy;
 302
 303         nntp_init(folder);
 304
 305 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
 306         if (ssl_type != SSL_NONE)
 307                 r = nntp_threaded_connect_ssl(folder, server, port);
 308         else
 309 #endif
 310                 r = nntp_threaded_connect(folder, server, port);
 311
 312         if (r != NEWSNNTP_NO_ERROR) {
 313                 log_error(LOG_PROTOCOL, _("Error logging in to %s:%d ...\n"), server, port);
 314                 session_destroy(SESSION(session));
 315                 return NULL;
 316         }
 317
 318         return SESSION(session);
 319 }
 320
 321 static Session *news_session_new_for_folder(Folder *folder)
 322 {
 323         Session *session;
 324         PrefsAccount *ac;
 325         const gchar *userid = NULL;
 326         gchar *passwd = NULL;
 327         gushort port;
 328
 329         g_return_val_if_fail(folder != NULL, NULL);
 330         g_return_val_if_fail(folder->account != NULL, NULL);
 331
 332         ac = folder->account;
 333         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 334                 userid = ac->userid;
 335                 if (ac->passwd && ac->passwd[0])
 336                         passwd = g_strdup(ac->passwd);
 337                 else
 338                         passwd = input_dialog_query_password(ac->nntp_server,
 339                                                              userid);
 340         }
 341
 342 #if (defined(USE_OPENSSL) || defined (USE_GNUTLS))
 343         port = ac->set_nntpport ? ac->nntpport
 344                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 345         session = news_session_new(folder, ac->nntp_server, port, userid, passwd,
 346                                    ac->ssl_nntp);
 347 #else
 348         if (ac->ssl_nntp != SSL_NONE) {
 349                 if (alertpanel_full(_("Insecure connection"),
 350                         _("This connection is configured to be secured "
 351                           "using SSL, but SSL is not available in this "
 352                           "build of Claws Mail. \n\n"
 353                           "Do you want to continue connecting to this "
 354                           "server? The communication would not be "
 355                           "secure."),
 356                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
 357                           NULL, FALSE, NULL, ALERT_WARNING,
 358                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
 359                         return NULL;
 360         }
 361         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 362         session = news_session_new(folder, ac->nntp_server, port, userid, passwd);
 363 #endif
 364
 365         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect) {
 366                 if (nntp_threaded_login(folder, userid, passwd) !=
 367                         NEWSNNTP_NO_ERROR) {
 368                         log_error(LOG_PROTOCOL, _("Error authenticating to %s:%d ...\n"), ac->nntp_server, port);
 369                         session_destroy(SESSION(session));
 370                         g_free(passwd);
 371                         return NULL;
 372                 }
 373         }
 374         g_free(passwd);
 375
 376         return session;
 377 }
 378
 379 static NewsSession *news_session_get(Folder *folder)
 380 {
 381         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 382         struct tm lt;
 383         g_return_val_if_fail(folder != NULL, NULL);
 384         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 385         g_return_val_if_fail(folder->account != NULL, NULL);
 386
 387         if (prefs_common.work_offline &&
 388             !inc_offline_should_override(FALSE,
 389                 _("Claws Mail needs network access in order "
 390                   "to access the News server."))) {
 391                 return NULL;
 392         }
 393
 394         if (!rfolder->session) {
 395                 rfolder->session = news_session_new_for_folder(folder);
 396                 return NEWS_SESSION(rfolder->session);
 397         }
 398
 399         if (time(NULL) - rfolder->session->last_access_time <
 400                 SESSION_TIMEOUT_INTERVAL) {
 401                 return NEWS_SESSION(rfolder->session);
 402         }
 403
 404         if (nntp_threaded_date(folder, &lt)
 405             == NEWSNNTP_ERROR_STREAM) {
 406                 log_warning(LOG_PROTOCOL, _("NNTP connection to %s:%d has been"
 407                               " disconnected. Reconnecting...\n"),
 408                             folder->account->nntp_server,
 409                             folder->account->set_nntpport ?
 410                             folder->account->nntpport : NNTP_PORT);
 411                 session_destroy(rfolder->session);
 412                 rfolder->session = news_session_new_for_folder(folder);
 413         }
 414
 415         if (rfolder->session)
 416                 session_set_access_time(rfolder->session);
 417
 418         return NEWS_SESSION(rfolder->session);
 419 }
 420
 421 static void news_remove_cached_msg(Folder *folder, FolderItem *item, MsgInfo *msginfo)
 422 {
 423         gchar *path, *filename;
 424
 425         path = folder_item_get_path(item);
 426
 427         if (!is_dir_exist(path)) {
 428                 g_free(path);
 429                 return;
 430         }
 431
 432         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msginfo->msgnum), NULL);
 433         g_free(path);
 434
 435         if (is_file_exist(filename)) {
 436                 g_unlink(filename);
 437         }
 438         g_free(filename);
 439 }
 440
 441 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 442 {
 443         gchar *path, *filename;
 444         NewsSession *session;
 445         gint ok;
 446
 447         g_return_val_if_fail(folder != NULL, NULL);
 448         g_return_val_if_fail(item != NULL, NULL);
 449
 450         path = folder_item_get_path(item);
 451         if (!is_dir_exist(path))
 452                 make_dir_hier(path);
 453         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 454         g_free(path);
 455
 456         if (is_file_exist(filename)) {
 457                 debug_print("article %d has been already cached.\n", num);
 458                 return filename;
 459         }
 460
 461         session = news_session_get(folder);
 462         if (!session) {
 463                 g_free(filename);
 464                 return NULL;
 465         }
 466
 467         ok = news_select_group(folder, item->path, NULL, NULL, NULL);
 468         if (ok != NEWSNNTP_NO_ERROR) {
 469                 if (ok == NEWSNNTP_ERROR_STREAM) {
 470                         session_destroy(SESSION(session));
 471                         REMOTE_FOLDER(folder)->session = NULL;
 472                 }
 473                 g_free(filename);
 474                 return NULL;
 475         }
 476
 477         debug_print("getting article %d...\n", num);
 478         ok = news_get_article(folder,
 479                               num, filename);
 480         if (ok != NEWSNNTP_NO_ERROR) {
 481                 g_warning("can't read article %d\n", num);
 482                 if (ok == NEWSNNTP_ERROR_STREAM) {
 483                         session_destroy(SESSION(session));
 484                         REMOTE_FOLDER(folder)->session = NULL;
 485                 }
 486                 g_free(filename);
 487                 return NULL;
 488         }
 489         GTK_EVENTS_FLUSH();
 490         return filename;
 491 }
 492
 493 static NewsGroupInfo *news_group_info_new(const gchar *name,
 494                                           gint first, gint last, gchar type)
 495 {
 496         NewsGroupInfo *ginfo;
 497
 498         ginfo = g_new(NewsGroupInfo, 1);
 499         ginfo->name = g_strdup(name);
 500         ginfo->first = first;
 501         ginfo->last = last;
 502         ginfo->type = type;
 503
 504         return ginfo;
 505 }
 506
 507 static void news_group_info_free(NewsGroupInfo *ginfo)
 508 {
 509         g_free(ginfo->name);
 510         g_free(ginfo);
 511 }
 512
 513 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 514                                     NewsGroupInfo *ginfo2)
 515 {
 516         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 517 }
 518
 519 GSList *news_get_group_list(Folder *folder)
 520 {
 521         gchar *path, *filename;
 522         FILE *fp;
 523         GSList *list = NULL;
 524         GSList *last = NULL;
 525         gchar buf[BUFFSIZE];
 526
 527         g_return_val_if_fail(folder != NULL, NULL);
 528         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 529
 530         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 531         if (!is_dir_exist(path))
 532                 make_dir_hier(path);
 533         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 534         g_free(path);
 535
 536         if ((fp = g_fopen(filename, "rb")) == NULL) {
 537                 NewsSession *session;
 538                 gint ok;
 539                 clist *grouplist = NULL;
 540                 clistiter *cur;
 541                 fp = fopen(filename, "wb");
 542
 543                 if (!fp) {
 544                         g_free(filename);
 545                         return NULL;
 546                 }
 547                 session = news_session_get(folder);
 548                 if (!session) {
 549                         fclose(fp);
 550                         g_free(filename);
 551                         return NULL;
 552                 }
 553
 554                 ok = nntp_threaded_list(folder, &grouplist);
 555
 556                 if (ok != NEWSNNTP_NO_ERROR) {
 557                         if (ok == NEWSNNTP_ERROR_STREAM) {
 558                                 session_destroy(SESSION(session));
 559                                 REMOTE_FOLDER(folder)->session = NULL;
 560                         }
 561                         fclose(fp);
 562                         g_free(filename);
 563                         return NULL;
 564                 }
 565
 566                 for (cur = clist_begin(grouplist); cur; cur = clist_next(cur)) {
 567                         struct newsnntp_group_info *info = (struct newsnntp_group_info *)
 568                                                                 clist_content(cur);
 569                         if (fprintf(fp, "%s %d %d %c\n",
 570                                 info->grp_name,
 571                                 info->grp_last,
 572                                 info->grp_first,
 573                                 info->grp_type) < 0) {
 574                                 log_error(LOG_PROTOCOL, ("Can't write newsgroup list\n"));
 575                                 session_destroy(SESSION(session));
 576                                 REMOTE_FOLDER(folder)->session = NULL;
 577                                 fclose(fp);
 578                                 g_free(filename);
 579                                 newsnntp_list_free(grouplist);
 580                                 return NULL;
 581                         }
 582                 }
 583                 newsnntp_list_free(grouplist);
 584
 585                 if (fclose(fp) == EOF) {
 586                         log_error(LOG_PROTOCOL, ("Can't write newsgroup list\n"));
 587                         session_destroy(SESSION(session));
 588                         REMOTE_FOLDER(folder)->session = NULL;
 589                         g_free(filename);
 590                         return NULL;
 591                 }
 592
 593                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 594                         FILE_OP_ERROR(filename, "fopen");
 595                         g_free(filename);
 596                         return NULL;
 597                 }
 598         }
 599
 600         while (fgets(buf, sizeof(buf), fp) != NULL) {
 601                 gchar *p = buf;
 602                 gchar *name;
 603                 gint last_num;
 604                 gint first_num;
 605                 gchar type;
 606                 NewsGroupInfo *ginfo;
 607
 608                 p = strchr(p, ' ');
 609                 if (!p) continue;
 610                 *p = '\0';
 611                 p++;
 612                 name = buf;
 613
 614                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 615                         continue;
 616
 617                 ginfo = news_group_info_new(name, first_num, last_num, type);
 618
 619                 if (!last)
 620                         last = list = g_slist_append(NULL, ginfo);
 621                 else {
 622                         last = g_slist_append(last, ginfo);
 623                         last = last->next;
 624                 }
 625         }
 626
 627         fclose(fp);
 628         g_free(filename);
 629
 630         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 631
 632         return list;
 633 }
 634
 635 void news_group_list_free(GSList *group_list)
 636 {
 637         GSList *cur;
 638
 639         if (!group_list) return;
 640
 641         for (cur = group_list; cur != NULL; cur = cur->next)
 642                 news_group_info_free((NewsGroupInfo *)cur->data);
 643         g_slist_free(group_list);
 644 }
 645
 646 void news_remove_group_list_cache(Folder *folder)
 647 {
 648         gchar *path, *filename;
 649
 650         g_return_if_fail(folder != NULL);
 651         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 652
 653         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 654         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 655         g_free(path);
 656
 657         if (is_file_exist(filename)) {
 658                 if (remove(filename) < 0)
 659                         FILE_OP_ERROR(filename, "remove");
 660         }
 661         g_free(filename);
 662 }
 663
 664 gint news_post(Folder *folder, const gchar *file)
 665 {
 666         gint ok;
 667         char *contents = file_read_to_str(file);
 668         NewsSession *session;
 669
 670         g_return_val_if_fail(folder != NULL, -1);
 671         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 672         g_return_val_if_fail(contents != NULL, -1);
 673
 674         session = news_session_get(folder);
 675         if (!session)  {
 676                 g_free(contents);
 677                 return -1;
 678         }
 679
 680         ok = nntp_threaded_post(folder, contents, strlen(contents));
 681
 682         g_free(contents);
 683         if (ok == NEWSNNTP_ERROR_STREAM) {
 684                 session_destroy(SESSION(session));
 685                 REMOTE_FOLDER(folder)->session = NULL;
 686         }
 687
 688         return ok;
 689 }
 690
 691 static gint news_get_article(Folder *folder, gint num, gchar *filename)
 692 {
 693         size_t len;
 694         char *result = NULL;
 695         int r;
 696
 697         r = nntp_threaded_article(folder, num, &result, &len);
 698
 699         if (r == NEWSNNTP_NO_ERROR) {
 700                 if (str_write_to_file(result, filename) < 0)
 701                         return -1;
 702         }
 703
 704         g_free(result);
 705         return r;
 706 }
 707
 708 /**
 709  * news_select_group:
 710  * @session: Active NNTP session.
 711  * @group: Newsgroup name.
 712  * @num: Estimated number of articles.
 713  * @first: First article number.
 714  * @last: Last article number.
 715  *
 716  * Select newsgroup @group with the GROUP command if it is not already
 717  * selected in @session, or article numbers need to be returned.
 718  *
 719  * Return value: NNTP result code.
 720  **/
 721 static gint news_select_group(Folder *folder, const gchar *group,
 722                               gint *num, gint *first, gint *last)
 723 {
 724         gint ok;
 725         gint num_, first_, last_;
 726         struct newsnntp_group_info *info = NULL;
 727         NewsSession *session = NEWS_SESSION(news_session_get(folder));
 728
 729         g_return_val_if_fail(session != NULL, -1);
 730
 731         if (!num || !first || !last) {
 732                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 733                         return NEWSNNTP_NO_ERROR;
 734                 num = &num_;
 735                 first = &first_;
 736                 last = &last_;
 737         }
 738
 739         g_free(session->group);
 740         session->group = NULL;
 741
 742         ok = nntp_threaded_group(folder, group, &info);
 743
 744         if (ok != NEWSNNTP_NO_ERROR &&
 745             ok != NEWSNNTP_ERROR_STREAM &&
 746             ok != NEWSNNTP_WARNING_REQUEST_AUTHORIZATION_USERNAME) {
 747                 ok = nntp_threaded_mode_reader(folder);
 748                 if (ok == NEWSNNTP_NO_ERROR)
 749                         ok = nntp_threaded_group(folder, group, &info);
 750         }
 751
 752         if (ok == NEWSNNTP_NO_ERROR && info) {
 753                 session->group = g_strdup(group);
 754                 *num = info->grp_first;
 755                 *first = info->grp_first;
 756                 *last = info->grp_last;
 757                 newsnntp_group_free(info);
 758         } else {
 759                 log_warning(LOG_PROTOCOL, _("couldn't select group: %s\n"), group);
 760         }
 761         return ok;
 762 }
 763
 764 static MsgInfo *news_parse_xover(struct newsnntp_xover_resp_item *item)
 765 {
 766         MsgInfo *msginfo;
 767
 768         /* set MsgInfo */
 769         msginfo = procmsg_msginfo_new();
 770         msginfo->msgnum = item->ovr_article;
 771         msginfo->size = item->ovr_size;
 772
 773         msginfo->date = g_strdup(item->ovr_date);
 774         msginfo->date_t = procheader_date_parse(NULL, item->ovr_date, 0);
 775
 776         msginfo->from = conv_unmime_header(item->ovr_author, NULL);
 777         msginfo->fromname = procheader_get_fromname(msginfo->from);
 778
 779         msginfo->subject = conv_unmime_header(item->ovr_subject, NULL);
 780
 781         remove_return(msginfo->from);
 782         remove_return(msginfo->fromname);
 783         remove_return(msginfo->subject);
 784
 785         if (item->ovr_message_id) {
 786                 gchar *tmp = g_strdup(item->ovr_message_id);
 787                 extract_parenthesis(tmp, '<', '>');
 788                 remove_space(tmp);
 789                 if (*tmp != '\0')
 790                         msginfo->msgid = g_strdup(tmp);
 791                 g_free(tmp);
 792         }
 793
 794         /* FIXME: this is a quick fix; references' meaning was changed
 795          * into having the actual list of references in the References: header.
 796          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 797          * their things properly. */
 798         if (item->ovr_references && *(item->ovr_references)) {
 799                 gchar **ref_tokens = g_strsplit(item->ovr_references, " ", -1);
 800                 guint i = 0;
 801                 char *tmp;
 802                 char *p;
 803                 while (ref_tokens[i]) {
 804                         gchar *cur_ref = ref_tokens[i];
 805                         msginfo->references = references_list_append(msginfo->references,
 806                                         cur_ref);
 807                         i++;
 808                 }
 809                 g_strfreev(ref_tokens);
 810
 811                 tmp = g_strdup(item->ovr_references);
 812                 eliminate_parenthesis(tmp, '(', ')');
 813                 if ((p = strrchr(tmp, '<')) != NULL) {
 814                         extract_parenthesis(p, '<', '>');
 815                         remove_space(p);
 816                         if (*p != '\0')
 817                                 msginfo->inreplyto = g_strdup(p);
 818                 }
 819                 g_free(tmp);
 820         }
 821
 822         return msginfo;
 823 }
 824
 825 static gchar *news_parse_xhdr(clist *hdrlist, MsgInfo *msginfo)
 826 {
 827         struct newsnntp_xhdr_resp_item *hdr;
 828
 829         hdr = clist_content(clist_begin(hdrlist));
 830         if (hdr->hdr_article != msginfo->msgnum)
 831                 return NULL;
 832         return g_strdup(hdr->hdr_value);
 833 }
 834
 835 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 836 {
 837         gchar * tmp;
 838         FILE * tmpfp;
 839         gchar buf[BUFFSIZE];
 840
 841         tmp = g_strdup_printf("%s%ctmp%p", g_get_tmp_dir(),
 842                               G_DIR_SEPARATOR, msginfo);
 843         if (tmp == NULL)
 844                 return -1;
 845
 846         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 847                 FILE_OP_ERROR(tmp, "fopen");
 848                 return -1;
 849         }
 850         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 851                 FILE_OP_ERROR(tmp, "chmod");
 852                 g_warning("can't change file mode\n");
 853         }
 854
 855         get_rfc822_date(buf, sizeof(buf));
 856         if (fprintf(tmpfp, "From: %s\r\n"
 857                        "Newsgroups: %s\r\n"
 858                        "Subject: cmsg cancel <%s>\r\n"
 859                        "Control: cancel <%s>\r\n"
 860                        "Approved: %s\r\n"
 861                        "X-Cancelled-by: %s\r\n"
 862                        "Date: %s\r\n"
 863                        "\r\n"
 864                        "removed with Claws Mail\r\n",
 865                        msginfo->from,
 866                        msginfo->newsgroups,
 867                        msginfo->msgid,
 868                        msginfo->msgid,
 869                        msginfo->from,
 870                        msginfo->from,
 871                        buf) < 0) {
 872                 FILE_OP_ERROR(tmp, "fprintf");
 873                 fclose(tmpfp);
 874                 g_unlink(tmp);
 875                 g_free(tmp);
 876                 return -1;
 877         }
 878
 879         if (fclose(tmpfp) == EOF) {
 880                 FILE_OP_ERROR(tmp, "fclose");
 881                 g_unlink(tmp);
 882                 g_free(tmp);
 883                 return -1;
 884         }
 885
 886         news_post(folder, tmp);
 887         remove(tmp);
 888
 889         g_free(tmp);
 890
 891         return 0;
 892 }
 893
 894 static gchar *news_folder_get_path(Folder *folder)
 895 {
 896         gchar *folder_path;
 897
 898         g_return_val_if_fail(folder->account != NULL, NULL);
 899
 900         folder_path = g_strconcat(get_news_cache_dir(),
 901                                   G_DIR_SEPARATOR_S,
 902                                   folder->account->nntp_server,
 903                                   NULL);
 904         return folder_path;
 905 }
 906
 907 static gchar *news_item_get_path(Folder *folder, FolderItem *item)
 908 {
 909         gchar *folder_path, *path;
 910
 911         g_return_val_if_fail(folder != NULL, NULL);
 912         g_return_val_if_fail(item != NULL, NULL);
 913         folder_path = news_folder_get_path(folder);
 914
 915         g_return_val_if_fail(folder_path != NULL, NULL);
 916         if (folder_path[0] == G_DIR_SEPARATOR) {
 917                 if (item->path)
 918                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 919                                            item->path, NULL);
 920                 else
 921                         path = g_strdup(folder_path);
 922         } else {
 923                 if (item->path)
 924                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 925                                            folder_path, G_DIR_SEPARATOR_S,
 926                                            item->path, NULL);
 927                 else
 928                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 929                                            folder_path, NULL);
 930         }
 931         g_free(folder_path);
 932
 933         return path;
 934 }
 935
 936 static gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 937 {
 938         NewsSession *session;
 939         gint i, ok, num, first, last, nummsgs = 0;
 940         gchar *dir;
 941
 942         g_return_val_if_fail(item != NULL, -1);
 943         g_return_val_if_fail(item->folder != NULL, -1);
 944         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 945
 946         session = news_session_get(folder);
 947         g_return_val_if_fail(session != NULL, -1);
 948
 949         *old_uids_valid = TRUE;
 950
 951         news_folder_lock(NEWS_FOLDER(item->folder));
 952
 953         ok = news_select_group(folder, item->path, &num, &first, &last);
 954         if (ok != NEWSNNTP_NO_ERROR) {
 955                 log_warning(LOG_PROTOCOL, _("couldn't set group: %s\n"), item->path);
 956                 news_folder_unlock(NEWS_FOLDER(item->folder));
 957                 return -1;
 958         }
 959
 960         dir = news_folder_get_path(folder);
 961         if (num <= 0)
 962                 remove_all_numbered_files(dir);
 963         else if (last < first)
 964                 log_warning(LOG_PROTOCOL, _("invalid article range: %d - %d\n"),
 965                             first, last);
 966         else {
 967                 for (i = first; i <= last; i++) {
 968                         *msgnum_list = g_slist_prepend(*msgnum_list,
 969                                                        GINT_TO_POINTER(i));
 970                         nummsgs++;
 971                 }
 972                 debug_print("removing old messages from %d to %d in %s\n",
 973                             first, last, dir);
 974                 remove_numbered_files(dir, 1, first - 1);
 975         }
 976         g_free(dir);
 977         news_folder_unlock(NEWS_FOLDER(item->folder));
 978         return nummsgs;
 979 }
 980
 981 static void news_set_msg_flags(FolderItem *item, MsgInfo *msginfo)
 982 {
 983         msginfo->flags.tmp_flags = 0;
 984         if (item->folder->account->mark_crosspost_read && msginfo->msgid) {
 985                 if (item->folder->newsart &&
 986                     g_hash_table_lookup(item->folder->newsart, msginfo->msgid) != NULL) {
 987                         msginfo->flags.perm_flags = MSG_COLORLABEL_TO_FLAGS(item->folder->account->crosspost_col);
 988
 989                 } else {
 990                         if (!item->folder->newsart)
 991                                 item->folder->newsart = g_hash_table_new(g_str_hash, g_str_equal);
 992                         g_hash_table_insert(item->folder->newsart,
 993                                         g_strdup(msginfo->msgid), GINT_TO_POINTER(1));
 994                         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 995                 }
 996         } else {
 997                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 998         }
 999 }
1000
1001 static MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
1002 {
1003         NewsSession *session;
1004         MsgInfo *msginfo = NULL;
1005         gint ok;
1006         struct newsnntp_xover_resp_item *result = NULL;
1007         clist *hdrlist = NULL;
1008
1009         session = news_session_get(folder);
1010         g_return_val_if_fail(session != NULL, NULL);
1011         g_return_val_if_fail(item != NULL, NULL);
1012         g_return_val_if_fail(item->folder != NULL, NULL);
1013         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
1014
1015         log_message(LOG_PROTOCOL, _("getting xover %d in %s...\n"),
1016                     num, item->path);
1017         news_folder_lock(NEWS_FOLDER(item->folder));
1018
1019         ok = nntp_threaded_xover(folder, num, num, &result, NULL);
1020         if (ok != NEWSNNTP_NO_ERROR) {
1021                 log_warning(LOG_PROTOCOL, _("couldn't get xover\n"));
1022                 if (ok == NEWSNNTP_ERROR_STREAM) {
1023                         session_destroy(SESSION(session));
1024                         REMOTE_FOLDER(item->folder)->session = NULL;
1025                 }
1026                 news_folder_unlock(NEWS_FOLDER(item->folder));
1027                 return NULL;
1028         }
1029
1030         msginfo = news_parse_xover(result);
1031         xover_resp_item_free(result);
1032         if (!msginfo) {
1033                 log_warning(LOG_PROTOCOL, _("invalid xover line\n"));
1034         }
1035
1036         if(!msginfo) {
1037                 news_folder_unlock(NEWS_FOLDER(item->folder));
1038                 return NULL;
1039         }
1040
1041         msginfo->folder = item;
1042
1043         news_set_msg_flags(item, msginfo);
1044         msginfo->flags.tmp_flags |= MSG_NEWS;
1045         msginfo->newsgroups = g_strdup(item->path);
1046
1047         ok = nntp_threaded_xhdr(folder, "to", num, num, &hdrlist);
1048
1049         if (ok != NEWSNNTP_NO_ERROR) {
1050                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1051                 if (ok == NEWSNNTP_ERROR_STREAM) {
1052                         session_destroy(SESSION(session));
1053                         REMOTE_FOLDER(item->folder)->session = NULL;
1054                 }
1055                 news_folder_unlock(NEWS_FOLDER(item->folder));
1056                 return msginfo;
1057         }
1058
1059         msginfo->to = news_parse_xhdr(hdrlist, msginfo);
1060         newsnntp_xhdr_free(hdrlist);
1061
1062         ok = nntp_threaded_xhdr(folder, "cc", num, num, &hdrlist);
1063
1064         if (ok != NEWSNNTP_NO_ERROR) {
1065                 log_warning(LOG_PROTOCOL, _("couldn't get xhdr\n"));
1066                 if (ok == NEWSNNTP_ERROR_STREAM) {
1067                         session_destroy(SESSION(session));
1068                         REMOTE_FOLDER(item->folder)->session = NULL;
1069                 }
1070                 news_folder_unlock(NEWS_FOLDER(item->folder));
1071                 return msginfo;
1072         }
1073
1074         msginfo->cc = news_parse_xhdr(hdrlist, msginfo);
1075         newsnntp_xhdr_free(hdrlist);
1076
1077         news_folder_unlock(NEWS_FOLDER(item->folder));
1078         return msginfo;
1079 }
1080
1081 static GSList *news_get_msginfos_for_range(NewsSession *session, FolderItem *item, guint begin, guint end)
1082 {
1083         GSList *newlist = NULL;
1084         GSList *llast = NULL;
1085         MsgInfo *msginfo;
1086         gint ok;
1087         clist *msglist = NULL;
1088         clistiter *cur;
1089         g_return_val_if_fail(session != NULL, NULL);
1090         g_return_val_if_fail(item != NULL, NULL);
1091
1092         log_message(LOG_PROTOCOL, _("getting xover %d - %d in %s...\n"),
1093                     begin, end, item->path);
1094
1095         news_folder_lock(NEWS_FOLDER(item->folder));
1096
1097         ok = nntp_threaded_xover(item->folder, begin, end, NULL, &msglist);
1098
1099         if (ok != NEWSNNTP_NO_ERROR) {
1100                 log_warning(LOG_PROTOCOL, _("couldn't get xover\n"));
1101                 if (ok == NEWSNNTP_ERROR_STREAM) {
1102                         session_destroy(SESSION(session));
1103                         REMOTE_FOLDER(item->folder)->session = NULL;
1104                 }
1105                 news_folder_unlock(NEWS_FOLDER(item->folder));
1106                 return NULL;
1107         }
1108
1109         for (cur = clist_begin(msglist); cur; cur = clist_next(cur)) {
1110                 struct newsnntp_xover_resp_item *ritem = (struct newsnntp_xover_resp_item *)clist_content(cur);
1111                 msginfo = news_parse_xover(ritem);
1112
1113                 if (!msginfo) {
1114                         log_warning(LOG_PROTOCOL, _("invalid xover line\n"));
1115                         continue;
1116                 }
1117
1118                 msginfo->folder = item;
1119                 news_set_msg_flags(item, msginfo);
1120                 msginfo->flags.tmp_flags |= MSG_NEWS;
1121                 msginfo->newsgroups = g_strdup(item->path);
1122
1123                 if (!newlist)
1124                         llast = newlist = g_slist_append(newlist, msginfo);
1125                 else {
1126                         llast = g_slist_append(llast, msginfo);
1127                         llast = llast->next;
1128                 }
1129         }
1130         newsnntp_xover_resp_list_free(msglist);
1131
1132         news_folder_unlock(NEWS_FOLDER(item->folder));
1133
1134         session_set_access_time(SESSION(session));
1135
1136         return newlist;
1137 }
1138
1139 static GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1140 {
1141         NewsSession *session;
1142         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1143         guint first, last, next;
1144         guint tofetch, fetched;
1145
1146         g_return_val_if_fail(folder != NULL, NULL);
1147         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1148         g_return_val_if_fail(msgnum_list != NULL, NULL);
1149         g_return_val_if_fail(item != NULL, NULL);
1150
1151         session = news_session_get(folder);
1152         g_return_val_if_fail(session != NULL, NULL);
1153
1154         tmp_msgnum_list = g_slist_copy(msgnum_list);
1155         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1156
1157         progressindicator_start(PROGRESS_TYPE_NETWORK);
1158         tofetch = g_slist_length(tmp_msgnum_list);
1159         fetched = 0;
1160
1161         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1162         last = first;
1163
1164         news_folder_lock(NEWS_FOLDER(item->folder));
1165
1166         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1167                 next = GPOINTER_TO_INT(elem->data);
1168                 if(next != (last + 1)) {
1169 /*                      session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1170                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1171 */
1172                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1173                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1174                         fetched = last - first + 1;
1175                         first = next;
1176                 }
1177                 last = next;
1178         }
1179
1180         news_folder_unlock(NEWS_FOLDER(item->folder));
1181
1182 /*      session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1183         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1184 */
1185         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1186         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1187
1188         g_slist_free(tmp_msgnum_list);
1189
1190         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1191
1192         return msginfo_list;
1193 }
1194
1195 static gboolean news_scan_required(Folder *folder, FolderItem *item)
1196 {
1197         return TRUE;
1198 }
1199
1200 void news_synchronise(FolderItem *item, gint days)
1201 {
1202         news_gtk_synchronise(item, days);
1203 }
1204
1205 static gint news_remove_folder(Folder *folder, FolderItem *item)
1206 {
1207         gchar *path;
1208
1209         g_return_val_if_fail(folder != NULL, -1);
1210         g_return_val_if_fail(item != NULL, -1);
1211         g_return_val_if_fail(item->path != NULL, -1);
1212
1213         path = folder_item_get_path(item);
1214         if (remove_dir_recursive(path) < 0) {
1215                 g_warning("can't remove directory `%s'\n", path);
1216                 g_free(path);
1217                 return -1;
1218         }
1219
1220         g_free(path);
1221         folder_item_remove(item);
1222         return 0;
1223 }
1224
1225 #else
1226 #include <glib.h>
1227 #include <glib/gi18n.h>
1228 #include <gtk/gtk.h>
1229 #include "folder.h"
1230 #include "alertpanel.h"
1231
1232 static FolderClass news_class;
1233
1234 static void warn_etpan(void)
1235 {
1236         static gboolean missing_news_warning = TRUE;
1237         if (missing_news_warning) {
1238                 missing_news_warning = FALSE;
1239                 alertpanel_error(
1240                         _("You have one or more News accounts "
1241                           "defined. However this version of "
1242                           "Claws Mail has been built without "
1243                           "News support; your News account(s) are "
1244                           "disabled.\n\n"
1245                           "You probably need to "
1246                           "install libetpan and recompile "
1247                           "Claws Mail."));
1248         }
1249 }
1250 static Folder *news_folder_new(const gchar *name, const gchar *path)
1251 {
1252         warn_etpan();
1253         return NULL;
1254 }
1255 void news_group_list_free(GSList *group_list)
1256 {
1257         warn_etpan();
1258 }
1259 void news_remove_group_list_cache(Folder *folder)
1260 {
1261         warn_etpan();
1262 }
1263 int news_folder_locked(Folder *folder)
1264 {
1265         warn_etpan();
1266         return 0;
1267 }
1268 gint news_post(Folder *folder, const gchar *file)
1269 {
1270         warn_etpan();
1271         return -1;
1272 }
1273
1274 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
1275 {
1276         warn_etpan();
1277         return -1;
1278 }
1279
1280 GSList *news_get_group_list(Folder *folder)
1281 {
1282         warn_etpan();
1283         return NULL;
1284 }
1285
1286
1287 FolderClass *news_get_class(void)
1288 {
1289         if (news_class.idstr == NULL) {
1290                 news_class.type = F_NEWS;
1291                 news_class.idstr = "news";
1292                 news_class.uistr = "News";
1293
1294                 /* Folder functions */
1295                 news_class.new_folder = news_folder_new;
1296         };
1297
1298         return &news_class;
1299 }
1300
1301
1302 #endif