src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2006 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 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <glib/gi18n.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <dirent.h>
  32 #include <unistd.h>
  33 #include <time.h>
  34
  35 #include "news.h"
  36 #include "news_gtk.h"
  37 #include "nntp.h"
  38 #include "socket.h"
  39 #include "recv.h"
  40 #include "procmsg.h"
  41 #include "procheader.h"
  42 #include "folder.h"
  43 #include "session.h"
  44 #include "statusbar.h"
  45 #include "codeconv.h"
  46 #include "utils.h"
  47 #include "prefs_common.h"
  48 #include "prefs_account.h"
  49 #include "inputdialog.h"
  50 #include "log.h"
  51 #include "progressindicator.h"
  52 #include "remotefolder.h"
  53 #include "alertpanel.h"
  54 #include "inc.h"
  55
  56 #if USE_OPENSSL
  57 #  include "ssl.h"
  58 #endif
  59
  60 #define NNTP_PORT       119
  61 #if USE_OPENSSL
  62 #define NNTPS_PORT      563
  63 #endif
  64
  65 typedef struct _NewsFolder      NewsFolder;
  66
  67 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  68
  69 struct _NewsFolder
  70 {
  71         RemoteFolder rfolder;
  72
  73         gboolean use_auth;
  74         gboolean lock_count;
  75 };
  76
  77 static void news_folder_init             (Folder        *folder,
  78                                           const gchar   *name,
  79                                           const gchar   *path);
  80
  81 static Folder   *news_folder_new        (const gchar    *name,
  82                                          const gchar    *folder);
  83 static void      news_folder_destroy    (Folder         *folder);
  84
  85 static gchar *news_fetch_msg            (Folder         *folder,
  86                                          FolderItem     *item,
  87                                          gint            num);
  88
  89
  90 #if USE_OPENSSL
  91 static Session *news_session_new         (const gchar   *server,
  92                                           gushort        port,
  93                                           const gchar   *userid,
  94                                           const gchar   *passwd,
  95                                           SSLType        ssl_type);
  96 #else
  97 static Session *news_session_new         (const gchar   *server,
  98                                           gushort        port,
  99                                           const gchar   *userid,
 100                                           const gchar   *passwd);
 101 #endif
 102
 103 static gint news_get_article_cmd         (NNTPSession   *session,
 104                                           const gchar   *cmd,
 105                                           gint           num,
 106                                           gchar         *filename);
 107 static gint news_get_article             (NNTPSession   *session,
 108                                           gint           num,
 109                                           gchar         *filename);
 110
 111 static gint news_select_group            (NNTPSession   *session,
 112                                           const gchar   *group,
 113                                           gint          *num,
 114                                           gint          *first,
 115                                           gint          *last);
 116 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 117 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 118                                           MsgInfo       *msginfo);
 119 gint news_get_num_list                   (Folder        *folder,
 120                                           FolderItem    *item,
 121                                           GSList       **list,
 122                                           gboolean      *old_uids_valid);
 123 MsgInfo *news_get_msginfo                (Folder        *folder,
 124                                           FolderItem    *item,
 125                                           gint           num);
 126 GSList *news_get_msginfos                (Folder        *folder,
 127                                           FolderItem    *item,
 128                                           GSList        *msgnum_list);
 129 gboolean news_scan_required              (Folder        *folder,
 130                                           FolderItem    *item);
 131
 132 gint news_post_stream                    (Folder        *folder,
 133                                           FILE          *fp);
 134 static gchar *news_folder_get_path       (Folder        *folder);
 135 gchar *news_item_get_path                (Folder        *folder,
 136                                           FolderItem    *item);
 137 static void news_synchronise             (FolderItem    *item);
 138 static int news_remove_msg               (Folder        *folder,
 139                                           FolderItem    *item,
 140                                           gint           msgnum);
 141 static gint news_remove_folder           (Folder        *folder,
 142                                           FolderItem    *item);
 143 static FolderClass news_class;
 144
 145 FolderClass *news_get_class(void)
 146 {
 147         if (news_class.idstr == NULL) {
 148                 news_class.type = F_NEWS;
 149                 news_class.idstr = "news";
 150                 news_class.uistr = "News";
 151
 152                 /* Folder functions */
 153                 news_class.new_folder = news_folder_new;
 154                 news_class.destroy_folder = news_folder_destroy;
 155
 156                 /* FolderItem functions */
 157                 news_class.item_get_path = news_item_get_path;
 158                 news_class.get_num_list = news_get_num_list;
 159                 news_class.scan_required = news_scan_required;
 160                 news_class.remove_folder = news_remove_folder;
 161
 162                 /* Message functions */
 163                 news_class.get_msginfo = news_get_msginfo;
 164                 news_class.get_msginfos = news_get_msginfos;
 165                 news_class.fetch_msg = news_fetch_msg;
 166                 news_class.synchronise = news_synchronise;
 167                 news_class.remove_msg = news_remove_msg;
 168         };
 169
 170         return &news_class;
 171 }
 172
 173 static int news_remove_msg               (Folder        *folder,
 174                                           FolderItem    *item,
 175                                           gint           msgnum)
 176 {
 177         gchar *path, *filename;
 178
 179         g_return_val_if_fail(folder != NULL, -1);
 180         g_return_val_if_fail(item != NULL, -1);
 181
 182         path = folder_item_get_path(item);
 183         if (!is_dir_exist(path))
 184                 make_dir_hier(path);
 185
 186         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(msgnum), NULL);
 187         g_free(path);
 188         g_unlink(filename);
 189         g_free(filename);
 190         return 0;
 191 }
 192
 193 static void news_folder_lock(NewsFolder *folder)
 194 {
 195         folder->lock_count++;
 196 }
 197
 198 static void news_folder_unlock(NewsFolder *folder)
 199 {
 200         if (folder->lock_count > 0)
 201                 folder->lock_count--;
 202 }
 203
 204 int news_folder_locked(Folder *folder)
 205 {
 206         if (folder == NULL)
 207                 return 0;
 208
 209         return NEWS_FOLDER(folder)->lock_count;
 210 }
 211
 212 static Folder *news_folder_new(const gchar *name, const gchar *path)
 213 {
 214         Folder *folder;
 215
 216         folder = (Folder *)g_new0(NewsFolder, 1);
 217         folder->klass = &news_class;
 218         news_folder_init(folder, name, path);
 219
 220         return folder;
 221 }
 222
 223 static void news_folder_destroy(Folder *folder)
 224 {
 225         gchar *dir;
 226
 227         dir = news_folder_get_path(folder);
 228         if (is_dir_exist(dir))
 229                 remove_dir_recursive(dir);
 230         g_free(dir);
 231
 232         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 233 }
 234
 235 static void news_folder_init(Folder *folder, const gchar *name,
 236                              const gchar *path)
 237 {
 238         folder_remote_folder_init(folder, name, path);
 239 }
 240
 241 #if USE_OPENSSL
 242 static Session *news_session_new(const gchar *server, gushort port,
 243                                  const gchar *userid, const gchar *passwd,
 244                                  SSLType ssl_type)
 245 #else
 246 static Session *news_session_new(const gchar *server, gushort port,
 247                                  const gchar *userid, const gchar *passwd)
 248 #endif
 249 {
 250         gchar buf[NNTPBUFSIZE];
 251         Session *session;
 252
 253         g_return_val_if_fail(server != NULL, NULL);
 254
 255         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 256
 257 #if USE_OPENSSL
 258         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 259 #else
 260         session = nntp_session_new(server, port, buf, userid, passwd);
 261 #endif
 262
 263         return session;
 264 }
 265
 266 static Session *news_session_new_for_folder(Folder *folder)
 267 {
 268         Session *session;
 269         PrefsAccount *ac;
 270         const gchar *userid = NULL;
 271         gchar *passwd = NULL;
 272         gushort port;
 273         gchar buf[NNTPBUFSIZE];
 274
 275         g_return_val_if_fail(folder != NULL, NULL);
 276         g_return_val_if_fail(folder->account != NULL, NULL);
 277
 278         ac = folder->account;
 279         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 280                 userid = ac->userid;
 281                 if (ac->passwd && ac->passwd[0])
 282                         passwd = g_strdup(ac->passwd);
 283                 else
 284                         passwd = input_dialog_query_password(ac->nntp_server,
 285                                                              userid);
 286         }
 287
 288 #if USE_OPENSSL
 289         port = ac->set_nntpport ? ac->nntpport
 290                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 291         session = news_session_new(ac->nntp_server, port, userid, passwd,
 292                                    ac->ssl_nntp);
 293 #else
 294         if (ac->ssl_nntp != SSL_NONE) {
 295                 if (alertpanel_full(_("Insecure connection"),
 296                         _("This connection is configured to be secured "
 297                           "using SSL, but SSL is not available in this "
 298                           "build of Claws Mail. \n\n"
 299                           "Do you want to continue connecting to this "
 300                           "server? The communication would not be "
 301                           "secure."),
 302                           GTK_STOCK_CANCEL, _("Con_tinue connecting"),
 303                           NULL, FALSE, NULL, ALERT_WARNING,
 304                           G_ALERTDEFAULT) != G_ALERTALTERNATE)
 305                         return NULL;
 306         }
 307         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 308         session = news_session_new(ac->nntp_server, port, userid, passwd);
 309 #endif
 310         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 311                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 312
 313         g_free(passwd);
 314
 315         return session;
 316 }
 317
 318 static NNTPSession *news_session_get(Folder *folder)
 319 {
 320         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 321
 322         g_return_val_if_fail(folder != NULL, NULL);
 323         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 324         g_return_val_if_fail(folder->account != NULL, NULL);
 325
 326         if (prefs_common.work_offline &&
 327             !inc_offline_should_override(
 328                 _("Claws Mail needs network access in order "
 329                   "to access the News server."))) {
 330                 return NULL;
 331         }
 332
 333         if (!rfolder->session) {
 334                 rfolder->session = news_session_new_for_folder(folder);
 335                 return NNTP_SESSION(rfolder->session);
 336         }
 337
 338         if (time(NULL) - rfolder->session->last_access_time <
 339                 SESSION_TIMEOUT_INTERVAL) {
 340                 return NNTP_SESSION(rfolder->session);
 341         }
 342
 343         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 344             != NN_SUCCESS) {
 345                 log_warning(_("NNTP connection to %s:%d has been"
 346                               " disconnected. Reconnecting...\n"),
 347                             folder->account->nntp_server,
 348                             folder->account->set_nntpport ?
 349                             folder->account->nntpport : NNTP_PORT);
 350                 session_destroy(rfolder->session);
 351                 rfolder->session = news_session_new_for_folder(folder);
 352         }
 353
 354         if (rfolder->session)
 355                 session_set_access_time(rfolder->session);
 356
 357         return NNTP_SESSION(rfolder->session);
 358 }
 359
 360 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 361 {
 362         gchar *path, *filename;
 363         NNTPSession *session;
 364         gint ok;
 365
 366         g_return_val_if_fail(folder != NULL, NULL);
 367         g_return_val_if_fail(item != NULL, NULL);
 368
 369         path = folder_item_get_path(item);
 370         if (!is_dir_exist(path))
 371                 make_dir_hier(path);
 372         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 373         g_free(path);
 374
 375         if (is_file_exist(filename)) {
 376                 debug_print("article %d has been already cached.\n", num);
 377                 return filename;
 378         }
 379
 380         session = news_session_get(folder);
 381         if (!session) {
 382                 g_free(filename);
 383                 return NULL;
 384         }
 385
 386         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 387         if (ok != NN_SUCCESS) {
 388                 if (ok == NN_SOCKET) {
 389                         session_destroy(SESSION(session));
 390                         REMOTE_FOLDER(folder)->session = NULL;
 391                 }
 392                 g_free(filename);
 393                 return NULL;
 394         }
 395
 396         debug_print("getting article %d...\n", num);
 397         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 398                               num, filename);
 399         if (ok != NN_SUCCESS) {
 400                 g_warning("can't read article %d\n", num);
 401                 if (ok == NN_SOCKET) {
 402                         session_destroy(SESSION(session));
 403                         REMOTE_FOLDER(folder)->session = NULL;
 404                 }
 405                 g_free(filename);
 406                 return NULL;
 407         }
 408         GTK_EVENTS_FLUSH();
 409         return filename;
 410 }
 411
 412 static NewsGroupInfo *news_group_info_new(const gchar *name,
 413                                           gint first, gint last, gchar type)
 414 {
 415         NewsGroupInfo *ginfo;
 416
 417         ginfo = g_new(NewsGroupInfo, 1);
 418         ginfo->name = g_strdup(name);
 419         ginfo->first = first;
 420         ginfo->last = last;
 421         ginfo->type = type;
 422
 423         return ginfo;
 424 }
 425
 426 static void news_group_info_free(NewsGroupInfo *ginfo)
 427 {
 428         g_free(ginfo->name);
 429         g_free(ginfo);
 430 }
 431
 432 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 433                                     NewsGroupInfo *ginfo2)
 434 {
 435         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 436 }
 437
 438 GSList *news_get_group_list(Folder *folder)
 439 {
 440         gchar *path, *filename;
 441         FILE *fp;
 442         GSList *list = NULL;
 443         GSList *last = NULL;
 444         gchar buf[NNTPBUFSIZE];
 445
 446         g_return_val_if_fail(folder != NULL, NULL);
 447         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 448
 449         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 450         if (!is_dir_exist(path))
 451                 make_dir_hier(path);
 452         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 453         g_free(path);
 454
 455         if ((fp = g_fopen(filename, "rb")) == NULL) {
 456                 NNTPSession *session;
 457                 gint ok;
 458
 459                 session = news_session_get(folder);
 460                 if (!session) {
 461                         g_free(filename);
 462                         return NULL;
 463                 }
 464
 465                 ok = nntp_list(session);
 466                 if (ok != NN_SUCCESS) {
 467                         if (ok == NN_SOCKET) {
 468                                 session_destroy(SESSION(session));
 469                                 REMOTE_FOLDER(folder)->session = NULL;
 470                         }
 471                         g_free(filename);
 472                         return NULL;
 473                 }
 474                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 475                         log_warning(_("can't retrieve newsgroup list\n"));
 476                         session_destroy(SESSION(session));
 477                         REMOTE_FOLDER(folder)->session = NULL;
 478                         g_free(filename);
 479                         return NULL;
 480                 }
 481
 482                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 483                         FILE_OP_ERROR(filename, "fopen");
 484                         g_free(filename);
 485                         return NULL;
 486                 }
 487         }
 488
 489         while (fgets(buf, sizeof(buf), fp) != NULL) {
 490                 gchar *p = buf;
 491                 gchar *name;
 492                 gint last_num;
 493                 gint first_num;
 494                 gchar type;
 495                 NewsGroupInfo *ginfo;
 496
 497                 p = strchr(p, ' ');
 498                 if (!p) continue;
 499                 *p = '\0';
 500                 p++;
 501                 name = buf;
 502
 503                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 504                         continue;
 505
 506                 ginfo = news_group_info_new(name, first_num, last_num, type);
 507
 508                 if (!last)
 509                         last = list = g_slist_append(NULL, ginfo);
 510                 else {
 511                         last = g_slist_append(last, ginfo);
 512                         last = last->next;
 513                 }
 514         }
 515
 516         fclose(fp);
 517         g_free(filename);
 518
 519         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 520
 521         return list;
 522 }
 523
 524 void news_group_list_free(GSList *group_list)
 525 {
 526         GSList *cur;
 527
 528         if (!group_list) return;
 529
 530         for (cur = group_list; cur != NULL; cur = cur->next)
 531                 news_group_info_free((NewsGroupInfo *)cur->data);
 532         g_slist_free(group_list);
 533 }
 534
 535 void news_remove_group_list_cache(Folder *folder)
 536 {
 537         gchar *path, *filename;
 538
 539         g_return_if_fail(folder != NULL);
 540         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 541
 542         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 543         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 544         g_free(path);
 545
 546         if (is_file_exist(filename)) {
 547                 if (remove(filename) < 0)
 548                         FILE_OP_ERROR(filename, "remove");
 549         }
 550         g_free(filename);
 551 }
 552
 553 gint news_post(Folder *folder, const gchar *file)
 554 {
 555         FILE *fp;
 556         gint ok;
 557
 558         g_return_val_if_fail(folder != NULL, -1);
 559         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 560         g_return_val_if_fail(file != NULL, -1);
 561
 562         if ((fp = g_fopen(file, "rb")) == NULL) {
 563                 FILE_OP_ERROR(file, "fopen");
 564                 return -1;
 565         }
 566
 567         ok = news_post_stream(folder, fp);
 568
 569         fclose(fp);
 570
 571         return ok;
 572 }
 573
 574 gint news_post_stream(Folder *folder, FILE *fp)
 575 {
 576         NNTPSession *session;
 577         gint ok;
 578
 579         g_return_val_if_fail(folder != NULL, -1);
 580         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 581         g_return_val_if_fail(fp != NULL, -1);
 582
 583         session = news_session_get(folder);
 584         if (!session) return -1;
 585
 586         ok = nntp_post(session, fp);
 587         if (ok != NN_SUCCESS) {
 588                 log_warning(_("couldn't post article.\n"));
 589                 if (ok == NN_SOCKET) {
 590                         session_destroy(SESSION(session));
 591                         REMOTE_FOLDER(folder)->session = NULL;
 592                 }
 593                 return -1;
 594         }
 595
 596         return 0;
 597 }
 598
 599 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 600                                  gint num, gchar *filename)
 601 {
 602         gchar *msgid;
 603         gint ok;
 604
 605         ok = nntp_get_article(session, cmd, num, &msgid);
 606         if (ok != NN_SUCCESS)
 607                 return ok;
 608
 609         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 610         g_free(msgid);
 611
 612         ok = recv_write_to_file(SESSION(session)->sock, filename);
 613         if (ok < 0) {
 614                 log_warning(_("couldn't retrieve article %d\n"), num);
 615                 if (ok == -2)
 616                         return NN_SOCKET;
 617                 else
 618                         return NN_IOERR;
 619         }
 620
 621         return NN_SUCCESS;
 622 }
 623
 624 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 625 {
 626         return news_get_article_cmd(session, "ARTICLE", num, filename);
 627 }
 628
 629 /**
 630  * news_select_group:
 631  * @session: Active NNTP session.
 632  * @group: Newsgroup name.
 633  * @num: Estimated number of articles.
 634  * @first: First article number.
 635  * @last: Last article number.
 636  *
 637  * Select newsgroup @group with the GROUP command if it is not already
 638  * selected in @session, or article numbers need to be returned.
 639  *
 640  * Return value: NNTP result code.
 641  **/
 642 static gint news_select_group(NNTPSession *session, const gchar *group,
 643                               gint *num, gint *first, gint *last)
 644 {
 645         gint ok;
 646         gint num_, first_, last_;
 647
 648         if (!num || !first || !last) {
 649                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 650                         return NN_SUCCESS;
 651                 num = &num_;
 652                 first = &first_;
 653                 last = &last_;
 654         }
 655
 656         g_free(session->group);
 657         session->group = NULL;
 658
 659         ok = nntp_group(session, group, num, first, last);
 660         if (ok == NN_SUCCESS)
 661                 session->group = g_strdup(group);
 662         else
 663                 log_warning(_("couldn't select group: %s\n"), group);
 664
 665         return ok;
 666 }
 667
 668 #define PARSE_ONE_PARAM(p, srcp) \
 669 { \
 670         p = strchr(srcp, '\t'); \
 671         if (!p) return NULL; \
 672         else \
 673                 *p++ = '\0'; \
 674 }
 675
 676 static MsgInfo *news_parse_xover(const gchar *xover_str)
 677 {
 678         MsgInfo *msginfo;
 679         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 680         gchar *p;
 681         gint num, size_int, line_int;
 682         gchar *xover_buf;
 683
 684         Xstrdup_a(xover_buf, xover_str, return NULL);
 685
 686         PARSE_ONE_PARAM(subject, xover_buf);
 687         PARSE_ONE_PARAM(sender, subject);
 688         PARSE_ONE_PARAM(date, sender);
 689         PARSE_ONE_PARAM(msgid, date);
 690         PARSE_ONE_PARAM(ref, msgid);
 691         PARSE_ONE_PARAM(size, ref);
 692         PARSE_ONE_PARAM(line, size);
 693         /*
 694          * PARSE_ONE_PARAM(xref, line);
 695          *
 696          * if we parse extra headers we should first examine the
 697          * LIST OVERVIEW.FMT response from the server. See
 698          * RFC2980 for details
 699          */
 700
 701         tmp = strchr(line, '\t');
 702         if (!tmp) tmp = strchr(line, '\r');
 703         if (!tmp) tmp = strchr(line, '\n');
 704         if (tmp) *tmp = '\0';
 705
 706         num = atoi(xover_str);
 707         size_int = atoi(size);
 708         line_int = atoi(line);
 709
 710         /* set MsgInfo */
 711         msginfo = procmsg_msginfo_new();
 712         msginfo->msgnum = num;
 713         msginfo->size = size_int;
 714
 715         msginfo->date = g_strdup(date);
 716         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 717
 718         msginfo->from = conv_unmime_header(sender, NULL);
 719         msginfo->fromname = procheader_get_fromname(msginfo->from);
 720
 721         msginfo->subject = conv_unmime_header(subject, NULL);
 722
 723         remove_return(msginfo->from);
 724         remove_return(msginfo->fromname);
 725         remove_return(msginfo->subject);
 726
 727         if (msgid) {
 728                 extract_parenthesis(msgid, '<', '>');
 729                 remove_space(msgid);
 730                 if (*msgid != '\0')
 731                         msginfo->msgid = g_strdup(msgid);
 732         }
 733
 734         /* FIXME: this is a quick fix; references' meaning was changed
 735          * into having the actual list of references in the References: header.
 736          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 737          * their things properly. */
 738         if (ref && strlen(ref)) {
 739                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 740                 guint i = 0;
 741
 742                 while (ref_tokens[i]) {
 743                         gchar *cur_ref = ref_tokens[i];
 744                         msginfo->references = references_list_append(msginfo->references,
 745                                         cur_ref);
 746                         i++;
 747                 }
 748                 g_strfreev(ref_tokens);
 749
 750                 eliminate_parenthesis(ref, '(', ')');
 751                 if ((p = strrchr(ref, '<')) != NULL) {
 752                         extract_parenthesis(p, '<', '>');
 753                         remove_space(p);
 754                         if (*p != '\0')
 755                                 msginfo->inreplyto = g_strdup(p);
 756                 }
 757         }
 758
 759         return msginfo;
 760 }
 761
 762 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 763 {
 764         gchar *p;
 765         gchar *tmp;
 766         gint num;
 767
 768         p = strchr(xhdr_str, ' ');
 769         if (!p)
 770                 return NULL;
 771         else
 772                 p++;
 773
 774         num = atoi(xhdr_str);
 775         if (msginfo->msgnum != num) return NULL;
 776
 777         tmp = strchr(p, '\r');
 778         if (!tmp) tmp = strchr(p, '\n');
 779
 780         if (tmp)
 781                 return g_strndup(p, tmp - p);
 782         else
 783                 return g_strdup(p);
 784 }
 785
 786 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 787 {
 788         gchar * tmp;
 789         FILE * tmpfp;
 790         gchar buf[BUFFSIZE];
 791
 792         tmp = g_strdup_printf("%s%ctmp%p", g_get_tmp_dir(),
 793                               G_DIR_SEPARATOR, msginfo);
 794         if (tmp == NULL)
 795                 return -1;
 796
 797         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 798                 FILE_OP_ERROR(tmp, "fopen");
 799                 return -1;
 800         }
 801         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 802                 FILE_OP_ERROR(tmp, "chmod");
 803                 g_warning("can't change file mode\n");
 804         }
 805
 806         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 807         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 808         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 809         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 810         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 811         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 812         get_rfc822_date(buf, sizeof(buf));
 813         fprintf(tmpfp, "Date: %s\r\n", buf);
 814         fprintf(tmpfp, "\r\n");
 815         fprintf(tmpfp, "removed with Claws Mail\r\n");
 816
 817         fclose(tmpfp);
 818
 819         news_post(folder, tmp);
 820         remove(tmp);
 821
 822         g_free(tmp);
 823
 824         return 0;
 825 }
 826
 827 static gchar *news_folder_get_path(Folder *folder)
 828 {
 829         gchar *folder_path;
 830
 831         g_return_val_if_fail(folder->account != NULL, NULL);
 832
 833         folder_path = g_strconcat(get_news_cache_dir(),
 834                                   G_DIR_SEPARATOR_S,
 835                                   folder->account->nntp_server,
 836                                   NULL);
 837         return folder_path;
 838 }
 839
 840 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 841 {
 842         gchar *folder_path, *path;
 843
 844         g_return_val_if_fail(folder != NULL, NULL);
 845         g_return_val_if_fail(item != NULL, NULL);
 846         folder_path = news_folder_get_path(folder);
 847
 848         g_return_val_if_fail(folder_path != NULL, NULL);
 849         if (folder_path[0] == G_DIR_SEPARATOR) {
 850                 if (item->path)
 851                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 852                                            item->path, NULL);
 853                 else
 854                         path = g_strdup(folder_path);
 855         } else {
 856                 if (item->path)
 857                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 858                                            folder_path, G_DIR_SEPARATOR_S,
 859                                            item->path, NULL);
 860                 else
 861                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 862                                            folder_path, NULL);
 863         }
 864         g_free(folder_path);
 865
 866         return path;
 867 }
 868
 869 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 870 {
 871         NNTPSession *session;
 872         gint i, ok, num, first, last, nummsgs = 0;
 873         gchar *dir;
 874
 875         g_return_val_if_fail(item != NULL, -1);
 876         g_return_val_if_fail(item->folder != NULL, -1);
 877         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 878
 879         session = news_session_get(folder);
 880         g_return_val_if_fail(session != NULL, -1);
 881
 882         *old_uids_valid = TRUE;
 883
 884         news_folder_lock(NEWS_FOLDER(item->folder));
 885
 886         ok = news_select_group(session, item->path, &num, &first, &last);
 887         if (ok != NN_SUCCESS) {
 888                 log_warning(_("couldn't set group: %s\n"), item->path);
 889                 news_folder_unlock(NEWS_FOLDER(item->folder));
 890                 return -1;
 891         }
 892
 893         dir = news_folder_get_path(folder);
 894         if (num <= 0)
 895                 remove_all_numbered_files(dir);
 896         else if (last < first)
 897                 log_warning(_("invalid article range: %d - %d\n"),
 898                             first, last);
 899         else {
 900                 for (i = first; i <= last; i++) {
 901                         *msgnum_list = g_slist_prepend(*msgnum_list,
 902                                                        GINT_TO_POINTER(i));
 903                         nummsgs++;
 904                 }
 905                 debug_print("removing old messages from %d to %d in %s\n",
 906                             first, last, dir);
 907                 remove_numbered_files(dir, 1, first - 1);
 908         }
 909         g_free(dir);
 910         news_folder_unlock(NEWS_FOLDER(item->folder));
 911         return nummsgs;
 912 }
 913
 914 #define READ_TO_LISTEND(hdr) \
 915         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 916                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 917                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 918                         return msginfo; \
 919                 } \
 920         }
 921
 922 static void news_set_msg_flags(FolderItem *item, MsgInfo *msginfo)
 923 {
 924         msginfo->flags.tmp_flags = 0;
 925         if (item->folder->account->mark_crosspost_read && msginfo->msgid) {
 926                 if (item->folder->newsart &&
 927                     g_hash_table_lookup(item->folder->newsart, msginfo->msgid) != NULL) {
 928                         msginfo->flags.perm_flags = MSG_COLORLABEL_TO_FLAGS(item->folder->account->crosspost_col);
 929
 930                 } else {
 931                         if (!item->folder->newsart)
 932                                 item->folder->newsart = g_hash_table_new(g_str_hash, g_str_equal);
 933                         g_hash_table_insert(item->folder->newsart,
 934                                         g_strdup(msginfo->msgid), GINT_TO_POINTER(1));
 935                         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 936                 }
 937         } else {
 938                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 939         }
 940 }
 941
 942 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 943 {
 944         NNTPSession *session;
 945         MsgInfo *msginfo = NULL;
 946         gchar buf[NNTPBUFSIZE];
 947         gint ok;
 948
 949         session = news_session_get(folder);
 950         g_return_val_if_fail(session != NULL, NULL);
 951         g_return_val_if_fail(item != NULL, NULL);
 952         g_return_val_if_fail(item->folder != NULL, NULL);
 953         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 954
 955         log_message(_("getting xover %d in %s...\n"),
 956                     num, item->path);
 957         ok = nntp_xover(session, num, num);
 958
 959         news_folder_lock(NEWS_FOLDER(item->folder));
 960
 961         if (ok != NN_SUCCESS) {
 962                 log_warning(_("couldn't get xover\n"));
 963                 if (ok == NN_SOCKET) {
 964                         session_destroy(SESSION(session));
 965                         REMOTE_FOLDER(item->folder)->session = NULL;
 966                 }
 967                 news_folder_unlock(NEWS_FOLDER(item->folder));
 968                 return NULL;
 969         }
 970
 971         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 972                 log_warning(_("error occurred while getting xover.\n"));
 973                 news_folder_unlock(NEWS_FOLDER(item->folder));
 974                 return NULL;
 975         }
 976
 977         msginfo = news_parse_xover(buf);
 978         if (!msginfo) {
 979                 log_warning(_("invalid xover line: %s\n"), buf);
 980         }
 981
 982         READ_TO_LISTEND("xover");
 983
 984         if(!msginfo) {
 985                 news_folder_unlock(NEWS_FOLDER(item->folder));
 986                 return NULL;
 987         }
 988
 989         msginfo->folder = item;
 990
 991         news_set_msg_flags(item, msginfo);
 992         msginfo->flags.tmp_flags |= MSG_NEWS;
 993         msginfo->newsgroups = g_strdup(item->path);
 994
 995         ok = nntp_xhdr(session, "to", num, num);
 996         if (ok != NN_SUCCESS) {
 997                 log_warning(_("couldn't get xhdr\n"));
 998                 if (ok == NN_SOCKET) {
 999                         session_destroy(SESSION(session));
1000                         REMOTE_FOLDER(item->folder)->session = NULL;
1001                 }
1002                 news_folder_unlock(NEWS_FOLDER(item->folder));
1003                 return msginfo;
1004         }
1005
1006         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1007                 log_warning(_("error occurred while getting xhdr.\n"));
1008                 news_folder_unlock(NEWS_FOLDER(item->folder));
1009                 return msginfo;
1010         }
1011
1012         msginfo->to = news_parse_xhdr(buf, msginfo);
1013
1014         READ_TO_LISTEND("xhdr (to)");
1015
1016         ok = nntp_xhdr(session, "cc", num, num);
1017         if (ok != NN_SUCCESS) {
1018                 log_warning(_("couldn't get xhdr\n"));
1019                 if (ok == NN_SOCKET) {
1020                         session_destroy(SESSION(session));
1021                         REMOTE_FOLDER(item->folder)->session = NULL;
1022                 }
1023                 news_folder_unlock(NEWS_FOLDER(item->folder));
1024                 return msginfo;
1025         }
1026
1027         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1028                 log_warning(_("error occurred while getting xhdr.\n"));
1029                 news_folder_unlock(NEWS_FOLDER(item->folder));
1030                 return msginfo;
1031         }
1032
1033         msginfo->cc = news_parse_xhdr(buf, msginfo);
1034
1035         READ_TO_LISTEND("xhdr (cc)");
1036         news_folder_unlock(NEWS_FOLDER(item->folder));
1037         return msginfo;
1038 }
1039
1040 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1041 {
1042         gchar buf[NNTPBUFSIZE];
1043         GSList *newlist = NULL;
1044         GSList *llast = NULL;
1045         MsgInfo *msginfo;
1046         guint count = 0, lines = (end - begin) + 2;
1047         gint ok;
1048
1049         g_return_val_if_fail(session != NULL, NULL);
1050         g_return_val_if_fail(item != NULL, NULL);
1051
1052         log_message(_("getting xover %d - %d in %s...\n"),
1053                     begin, end, item->path);
1054         ok = nntp_xover(session, begin, end);
1055         if (ok != NN_SUCCESS) {
1056                 log_warning(_("couldn't get xover\n"));
1057                 if (ok == NN_SOCKET) {
1058                         session_destroy(SESSION(session));
1059                         REMOTE_FOLDER(item->folder)->session = NULL;
1060                 }
1061                 return NULL;
1062         }
1063
1064         news_folder_lock(NEWS_FOLDER(item->folder));
1065
1066         for (;;) {
1067                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1068                         log_warning(_("error occurred while getting xover.\n"));
1069                         news_folder_unlock(NEWS_FOLDER(item->folder));
1070                         return newlist;
1071                 }
1072                 count++;
1073                 progressindicator_set_percentage
1074                         (PROGRESS_TYPE_NETWORK,
1075                          session->fetch_base_percentage +
1076                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1077
1078                 if (buf[0] == '.' && buf[1] == '\r') break;
1079
1080                 msginfo = news_parse_xover(buf);
1081                 if (!msginfo) {
1082                         log_warning(_("invalid xover line: %s\n"), buf);
1083                         continue;
1084                 }
1085
1086                 msginfo->folder = item;
1087                 news_set_msg_flags(item, msginfo);
1088                 msginfo->flags.tmp_flags |= MSG_NEWS;
1089                 msginfo->newsgroups = g_strdup(item->path);
1090
1091                 if (!newlist)
1092                         llast = newlist = g_slist_append(newlist, msginfo);
1093                 else {
1094                         llast = g_slist_append(llast, msginfo);
1095                         llast = llast->next;
1096                 }
1097         }
1098
1099         ok = nntp_xhdr(session, "to", begin, end);
1100         if (ok != NN_SUCCESS) {
1101                 log_warning(_("couldn't get xhdr\n"));
1102                 if (ok == NN_SOCKET) {
1103                         session_destroy(SESSION(session));
1104                         REMOTE_FOLDER(item->folder)->session = NULL;
1105                 }
1106                 news_folder_unlock(NEWS_FOLDER(item->folder));
1107                 return newlist;
1108         }
1109
1110         llast = newlist;
1111
1112         for (;;) {
1113                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1114                         log_warning(_("error occurred while getting xhdr.\n"));
1115                         news_folder_unlock(NEWS_FOLDER(item->folder));
1116                         return newlist;
1117                 }
1118
1119                 if (buf[0] == '.' && buf[1] == '\r') break;
1120                 if (!llast) {
1121                         g_warning("llast == NULL\n");
1122                         continue;
1123                 }
1124
1125                 msginfo = (MsgInfo *)llast->data;
1126                 msginfo->to = news_parse_xhdr(buf, msginfo);
1127
1128                 llast = llast->next;
1129         }
1130
1131         ok = nntp_xhdr(session, "cc", begin, end);
1132         if (ok != NN_SUCCESS) {
1133                 log_warning(_("couldn't get xhdr\n"));
1134                 if (ok == NN_SOCKET) {
1135                         session_destroy(SESSION(session));
1136                         REMOTE_FOLDER(item->folder)->session = NULL;
1137                 }
1138                 news_folder_unlock(NEWS_FOLDER(item->folder));
1139                 return newlist;
1140         }
1141
1142         llast = newlist;
1143
1144         for (;;) {
1145                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1146                         log_warning(_("error occurred while getting xhdr.\n"));
1147                         news_folder_unlock(NEWS_FOLDER(item->folder));
1148                         return newlist;
1149                 }
1150
1151                 if (buf[0] == '.' && buf[1] == '\r') break;
1152                 if (!llast) {
1153                         g_warning("llast == NULL\n");
1154                         continue;
1155                 }
1156
1157                 msginfo = (MsgInfo *)llast->data;
1158                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1159
1160                 llast = llast->next;
1161         }
1162         news_folder_unlock(NEWS_FOLDER(item->folder));
1163
1164         session_set_access_time(SESSION(session));
1165
1166         return newlist;
1167 }
1168
1169 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1170 {
1171         NNTPSession *session;
1172         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1173         guint first, last, next;
1174         guint tofetch, fetched;
1175
1176         g_return_val_if_fail(folder != NULL, NULL);
1177         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1178         g_return_val_if_fail(msgnum_list != NULL, NULL);
1179         g_return_val_if_fail(item != NULL, NULL);
1180
1181         session = news_session_get(folder);
1182         g_return_val_if_fail(session != NULL, NULL);
1183
1184         tmp_msgnum_list = g_slist_copy(msgnum_list);
1185         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1186
1187         progressindicator_start(PROGRESS_TYPE_NETWORK);
1188         tofetch = g_slist_length(tmp_msgnum_list);
1189         fetched = 0;
1190
1191         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1192         last = first;
1193
1194         news_folder_lock(NEWS_FOLDER(item->folder));
1195
1196         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1197                 next = GPOINTER_TO_INT(elem->data);
1198                 if(next != (last + 1)) {
1199                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1200                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1201                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1202                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1203                         fetched = last - first + 1;
1204                         first = next;
1205                 }
1206                 last = next;
1207         }
1208
1209         news_folder_unlock(NEWS_FOLDER(item->folder));
1210
1211         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1212         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1213         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1214         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1215
1216         g_slist_free(tmp_msgnum_list);
1217
1218         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1219
1220         return msginfo_list;
1221 }
1222
1223 gboolean news_scan_required(Folder *folder, FolderItem *item)
1224 {
1225         return TRUE;
1226 }
1227
1228 void news_synchronise(FolderItem *item)
1229 {
1230         news_gtk_synchronise(item);
1231 }
1232
1233 static gint news_remove_folder(Folder *folder, FolderItem *item)
1234 {
1235         gchar *path;
1236
1237         g_return_val_if_fail(folder != NULL, -1);
1238         g_return_val_if_fail(item != NULL, -1);
1239         g_return_val_if_fail(item->path != NULL, -1);
1240
1241         path = folder_item_get_path(item);
1242         if (remove_dir_recursive(path) < 0) {
1243                 g_warning("can't remove directory `%s'\n", path);
1244                 g_free(path);
1245                 return -1;
1246         }
1247
1248         g_free(path);
1249         folder_item_remove(item);
1250         return 0;
1251 }