src/news.c

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