src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 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 };
  75
  76 static void news_folder_init             (Folder        *folder,
  77                                           const gchar   *name,
  78                                           const gchar   *path);
  79
  80 static Folder   *news_folder_new        (const gchar    *name,
  81                                          const gchar    *folder);
  82 static void      news_folder_destroy    (Folder         *folder);
  83
  84 static gchar *news_fetch_msg            (Folder         *folder,
  85                                          FolderItem     *item,
  86                                          gint            num);
  87
  88
  89 #if USE_OPENSSL
  90 static Session *news_session_new         (const gchar   *server,
  91                                           gushort        port,
  92                                           const gchar   *userid,
  93                                           const gchar   *passwd,
  94                                           SSLType        ssl_type);
  95 #else
  96 static Session *news_session_new         (const gchar   *server,
  97                                           gushort        port,
  98                                           const gchar   *userid,
  99                                           const gchar   *passwd);
 100 #endif
 101
 102 static gint news_get_article_cmd         (NNTPSession   *session,
 103                                           const gchar   *cmd,
 104                                           gint           num,
 105                                           gchar         *filename);
 106 static gint news_get_article             (NNTPSession   *session,
 107                                           gint           num,
 108                                           gchar         *filename);
 109
 110 static gint news_select_group            (NNTPSession   *session,
 111                                           const gchar   *group,
 112                                           gint          *num,
 113                                           gint          *first,
 114                                           gint          *last);
 115 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 116 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 117                                           MsgInfo       *msginfo);
 118 gint news_get_num_list                   (Folder        *folder,
 119                                           FolderItem    *item,
 120                                           GSList       **list,
 121                                           gboolean      *old_uids_valid);
 122 MsgInfo *news_get_msginfo                (Folder        *folder,
 123                                           FolderItem    *item,
 124                                           gint           num);
 125 GSList *news_get_msginfos                (Folder        *folder,
 126                                           FolderItem    *item,
 127                                           GSList        *msgnum_list);
 128 gboolean news_scan_required              (Folder        *folder,
 129                                           FolderItem    *item);
 130
 131 gint news_post_stream                    (Folder        *folder,
 132                                           FILE          *fp);
 133 static gchar *news_folder_get_path       (Folder        *folder);
 134 gchar *news_item_get_path                (Folder        *folder,
 135                                           FolderItem    *item);
 136 static void news_synchronise             (FolderItem    *item);
 137 static int news_dummy_remove             (Folder        *folder,
 138                                           FolderItem    *item,
 139                                           gint           msgnum);
 140 static FolderClass news_class;
 141
 142 FolderClass *news_get_class(void)
 143 {
 144         if (news_class.idstr == NULL) {
 145                 news_class.type = F_NEWS;
 146                 news_class.idstr = "news";
 147                 news_class.uistr = "News";
 148
 149                 /* Folder functions */
 150                 news_class.new_folder = news_folder_new;
 151                 news_class.destroy_folder = news_folder_destroy;
 152
 153                 /* FolderItem functions */
 154                 news_class.item_get_path = news_item_get_path;
 155                 news_class.get_num_list = news_get_num_list;
 156                 news_class.scan_required = news_scan_required;
 157
 158                 /* Message functions */
 159                 news_class.get_msginfo = news_get_msginfo;
 160                 news_class.get_msginfos = news_get_msginfos;
 161                 news_class.fetch_msg = news_fetch_msg;
 162                 news_class.synchronise = news_synchronise;
 163                 news_class.remove_msg = news_dummy_remove;
 164         };
 165
 166         return &news_class;
 167 }
 168
 169 static int news_dummy_remove             (Folder        *folder,
 170                                           FolderItem    *item,
 171                                           gint           msgnum)
 172 {
 173         debug_print("doing nothing on purpose\n");
 174         return 0;
 175 }
 176
 177 static Folder *news_folder_new(const gchar *name, const gchar *path)
 178 {
 179         Folder *folder;
 180
 181         folder = (Folder *)g_new0(NewsFolder, 1);
 182         folder->klass = &news_class;
 183         news_folder_init(folder, name, path);
 184
 185         return folder;
 186 }
 187
 188 static void news_folder_destroy(Folder *folder)
 189 {
 190         gchar *dir;
 191
 192         dir = news_folder_get_path(folder);
 193         if (is_dir_exist(dir))
 194                 remove_dir_recursive(dir);
 195         g_free(dir);
 196
 197         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 198 }
 199
 200 static void news_folder_init(Folder *folder, const gchar *name,
 201                              const gchar *path)
 202 {
 203         folder_remote_folder_init(folder, name, path);
 204 }
 205
 206 #if USE_OPENSSL
 207 static Session *news_session_new(const gchar *server, gushort port,
 208                                  const gchar *userid, const gchar *passwd,
 209                                  SSLType ssl_type)
 210 #else
 211 static Session *news_session_new(const gchar *server, gushort port,
 212                                  const gchar *userid, const gchar *passwd)
 213 #endif
 214 {
 215         gchar buf[NNTPBUFSIZE];
 216         Session *session;
 217
 218         g_return_val_if_fail(server != NULL, NULL);
 219
 220         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 221
 222 #if USE_OPENSSL
 223         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 224 #else
 225         session = nntp_session_new(server, port, buf, userid, passwd);
 226 #endif
 227
 228         return session;
 229 }
 230
 231 static Session *news_session_new_for_folder(Folder *folder)
 232 {
 233         Session *session;
 234         PrefsAccount *ac;
 235         const gchar *userid = NULL;
 236         gchar *passwd = NULL;
 237         gushort port;
 238         gchar buf[NNTPBUFSIZE];
 239
 240         g_return_val_if_fail(folder != NULL, NULL);
 241         g_return_val_if_fail(folder->account != NULL, NULL);
 242
 243         ac = folder->account;
 244         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 245                 userid = ac->userid;
 246                 if (ac->passwd && ac->passwd[0])
 247                         passwd = g_strdup(ac->passwd);
 248                 else
 249                         passwd = input_dialog_query_password(ac->nntp_server,
 250                                                              userid);
 251         }
 252
 253 #if USE_OPENSSL
 254         port = ac->set_nntpport ? ac->nntpport
 255                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 256         session = news_session_new(ac->nntp_server, port, userid, passwd,
 257                                    ac->ssl_nntp);
 258 #else
 259         if (ac->ssl_nntp != SSL_NONE) {
 260                 if (alertpanel_full(_("Insecure connection"),
 261                         _("This connection is configured to be secured "
 262                           "using SSL, but SSL is not available in this "
 263                           "build of Sylpheed-Claws. \n\n"
 264                           "Do you want to continue connecting to this "
 265                           "server? The communication would not be "
 266                           "secure."),
 267                           _("Con_tinue connecting"),
 268                           GTK_STOCK_CANCEL, NULL,
 269                           FALSE, NULL, ALERT_WARNING,
 270                           G_ALERTALTERNATE) != G_ALERTDEFAULT)
 271                         return NULL;
 272         }
 273         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 274         session = news_session_new(ac->nntp_server, port, userid, passwd);
 275 #endif
 276         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 277                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 278
 279         g_free(passwd);
 280
 281         return session;
 282 }
 283
 284 static NNTPSession *news_session_get(Folder *folder)
 285 {
 286         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 287
 288         g_return_val_if_fail(folder != NULL, NULL);
 289         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 290         g_return_val_if_fail(folder->account != NULL, NULL);
 291
 292         if (prefs_common.work_offline && !inc_offline_should_override()) {
 293                 return NULL;
 294         }
 295
 296         if (!rfolder->session) {
 297                 rfolder->session = news_session_new_for_folder(folder);
 298                 return NNTP_SESSION(rfolder->session);
 299         }
 300
 301         if (time(NULL) - rfolder->session->last_access_time <
 302                 SESSION_TIMEOUT_INTERVAL) {
 303                 return NNTP_SESSION(rfolder->session);
 304         }
 305
 306         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 307             != NN_SUCCESS) {
 308                 log_warning(_("NNTP connection to %s:%d has been"
 309                               " disconnected. Reconnecting...\n"),
 310                             folder->account->nntp_server,
 311                             folder->account->set_nntpport ?
 312                             folder->account->nntpport : NNTP_PORT);
 313                 session_destroy(rfolder->session);
 314                 rfolder->session = news_session_new_for_folder(folder);
 315         }
 316
 317         if (rfolder->session)
 318                 session_set_access_time(rfolder->session);
 319
 320         return NNTP_SESSION(rfolder->session);
 321 }
 322
 323 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 324 {
 325         gchar *path, *filename;
 326         NNTPSession *session;
 327         gint ok;
 328
 329         g_return_val_if_fail(folder != NULL, NULL);
 330         g_return_val_if_fail(item != NULL, NULL);
 331
 332         path = folder_item_get_path(item);
 333         if (!is_dir_exist(path))
 334                 make_dir_hier(path);
 335         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 336         g_free(path);
 337
 338         if (is_file_exist(filename)) {
 339                 debug_print("article %d has been already cached.\n", num);
 340                 return filename;
 341         }
 342
 343         session = news_session_get(folder);
 344         if (!session) {
 345                 g_free(filename);
 346                 return NULL;
 347         }
 348
 349         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 350         if (ok != NN_SUCCESS) {
 351                 if (ok == NN_SOCKET) {
 352                         session_destroy(SESSION(session));
 353                         REMOTE_FOLDER(folder)->session = NULL;
 354                 }
 355                 g_free(filename);
 356                 return NULL;
 357         }
 358
 359         debug_print("getting article %d...\n", num);
 360         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 361                               num, filename);
 362         if (ok != NN_SUCCESS) {
 363                 g_warning("can't read article %d\n", num);
 364                 if (ok == NN_SOCKET) {
 365                         session_destroy(SESSION(session));
 366                         REMOTE_FOLDER(folder)->session = NULL;
 367                 }
 368                 g_free(filename);
 369                 return NULL;
 370         }
 371
 372         return filename;
 373 }
 374
 375 static NewsGroupInfo *news_group_info_new(const gchar *name,
 376                                           gint first, gint last, gchar type)
 377 {
 378         NewsGroupInfo *ginfo;
 379
 380         ginfo = g_new(NewsGroupInfo, 1);
 381         ginfo->name = g_strdup(name);
 382         ginfo->first = first;
 383         ginfo->last = last;
 384         ginfo->type = type;
 385
 386         return ginfo;
 387 }
 388
 389 static void news_group_info_free(NewsGroupInfo *ginfo)
 390 {
 391         g_free(ginfo->name);
 392         g_free(ginfo);
 393 }
 394
 395 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 396                                     NewsGroupInfo *ginfo2)
 397 {
 398         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 399 }
 400
 401 GSList *news_get_group_list(Folder *folder)
 402 {
 403         gchar *path, *filename;
 404         FILE *fp;
 405         GSList *list = NULL;
 406         GSList *last = NULL;
 407         gchar buf[NNTPBUFSIZE];
 408
 409         g_return_val_if_fail(folder != NULL, NULL);
 410         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 411
 412         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 413         if (!is_dir_exist(path))
 414                 make_dir_hier(path);
 415         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 416         g_free(path);
 417
 418         if ((fp = g_fopen(filename, "rb")) == NULL) {
 419                 NNTPSession *session;
 420                 gint ok;
 421
 422                 session = news_session_get(folder);
 423                 if (!session) {
 424                         g_free(filename);
 425                         return NULL;
 426                 }
 427
 428                 ok = nntp_list(session);
 429                 if (ok != NN_SUCCESS) {
 430                         if (ok == NN_SOCKET) {
 431                                 session_destroy(SESSION(session));
 432                                 REMOTE_FOLDER(folder)->session = NULL;
 433                         }
 434                         g_free(filename);
 435                         return NULL;
 436                 }
 437                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 438                         log_warning(_("can't retrieve newsgroup list\n"));
 439                         session_destroy(SESSION(session));
 440                         REMOTE_FOLDER(folder)->session = NULL;
 441                         g_free(filename);
 442                         return NULL;
 443                 }
 444
 445                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 446                         FILE_OP_ERROR(filename, "fopen");
 447                         g_free(filename);
 448                         return NULL;
 449                 }
 450         }
 451
 452         while (fgets(buf, sizeof(buf), fp) != NULL) {
 453                 gchar *p = buf;
 454                 gchar *name;
 455                 gint last_num;
 456                 gint first_num;
 457                 gchar type;
 458                 NewsGroupInfo *ginfo;
 459
 460                 p = strchr(p, ' ');
 461                 if (!p) continue;
 462                 *p = '\0';
 463                 p++;
 464                 name = buf;
 465
 466                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 467                         continue;
 468
 469                 ginfo = news_group_info_new(name, first_num, last_num, type);
 470
 471                 if (!last)
 472                         last = list = g_slist_append(NULL, ginfo);
 473                 else {
 474                         last = g_slist_append(last, ginfo);
 475                         last = last->next;
 476                 }
 477         }
 478
 479         fclose(fp);
 480         g_free(filename);
 481
 482         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 483
 484         return list;
 485 }
 486
 487 void news_group_list_free(GSList *group_list)
 488 {
 489         GSList *cur;
 490
 491         if (!group_list) return;
 492
 493         for (cur = group_list; cur != NULL; cur = cur->next)
 494                 news_group_info_free((NewsGroupInfo *)cur->data);
 495         g_slist_free(group_list);
 496 }
 497
 498 void news_remove_group_list_cache(Folder *folder)
 499 {
 500         gchar *path, *filename;
 501
 502         g_return_if_fail(folder != NULL);
 503         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 504
 505         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 506         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 507         g_free(path);
 508
 509         if (is_file_exist(filename)) {
 510                 if (remove(filename) < 0)
 511                         FILE_OP_ERROR(filename, "remove");
 512         }
 513         g_free(filename);
 514 }
 515
 516 gint news_post(Folder *folder, const gchar *file)
 517 {
 518         FILE *fp;
 519         gint ok;
 520
 521         g_return_val_if_fail(folder != NULL, -1);
 522         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 523         g_return_val_if_fail(file != NULL, -1);
 524
 525         if ((fp = g_fopen(file, "rb")) == NULL) {
 526                 FILE_OP_ERROR(file, "fopen");
 527                 return -1;
 528         }
 529
 530         ok = news_post_stream(folder, fp);
 531
 532         fclose(fp);
 533
 534         return ok;
 535 }
 536
 537 gint news_post_stream(Folder *folder, FILE *fp)
 538 {
 539         NNTPSession *session;
 540         gint ok;
 541
 542         g_return_val_if_fail(folder != NULL, -1);
 543         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 544         g_return_val_if_fail(fp != NULL, -1);
 545
 546         session = news_session_get(folder);
 547         if (!session) return -1;
 548
 549         ok = nntp_post(session, fp);
 550         if (ok != NN_SUCCESS) {
 551                 log_warning(_("can't post article.\n"));
 552                 if (ok == NN_SOCKET) {
 553                         session_destroy(SESSION(session));
 554                         REMOTE_FOLDER(folder)->session = NULL;
 555                 }
 556                 return -1;
 557         }
 558
 559         return 0;
 560 }
 561
 562 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 563                                  gint num, gchar *filename)
 564 {
 565         gchar *msgid;
 566         gint ok;
 567
 568         ok = nntp_get_article(session, cmd, num, &msgid);
 569         if (ok != NN_SUCCESS)
 570                 return ok;
 571
 572         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 573         g_free(msgid);
 574
 575         ok = recv_write_to_file(SESSION(session)->sock, filename);
 576         if (ok < 0) {
 577                 log_warning(_("can't retrieve article %d\n"), num);
 578                 if (ok == -2)
 579                         return NN_SOCKET;
 580                 else
 581                         return NN_IOERR;
 582         }
 583
 584         return NN_SUCCESS;
 585 }
 586
 587 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 588 {
 589         return news_get_article_cmd(session, "ARTICLE", num, filename);
 590 }
 591
 592 /**
 593  * news_select_group:
 594  * @session: Active NNTP session.
 595  * @group: Newsgroup name.
 596  * @num: Estimated number of articles.
 597  * @first: First article number.
 598  * @last: Last article number.
 599  *
 600  * Select newsgroup @group with the GROUP command if it is not already
 601  * selected in @session, or article numbers need to be returned.
 602  *
 603  * Return value: NNTP result code.
 604  **/
 605 static gint news_select_group(NNTPSession *session, const gchar *group,
 606                               gint *num, gint *first, gint *last)
 607 {
 608         gint ok;
 609         gint num_, first_, last_;
 610
 611         if (!num || !first || !last) {
 612                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 613                         return NN_SUCCESS;
 614                 num = &num_;
 615                 first = &first_;
 616                 last = &last_;
 617         }
 618
 619         g_free(session->group);
 620         session->group = NULL;
 621
 622         ok = nntp_group(session, group, num, first, last);
 623         if (ok == NN_SUCCESS)
 624                 session->group = g_strdup(group);
 625         else
 626                 log_warning(_("can't select group: %s\n"), group);
 627
 628         return ok;
 629 }
 630
 631 #define PARSE_ONE_PARAM(p, srcp) \
 632 { \
 633         p = strchr(srcp, '\t'); \
 634         if (!p) return NULL; \
 635         else \
 636                 *p++ = '\0'; \
 637 }
 638
 639 static MsgInfo *news_parse_xover(const gchar *xover_str)
 640 {
 641         MsgInfo *msginfo;
 642         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 643         gchar *p;
 644         gint num, size_int, line_int;
 645         gchar *xover_buf;
 646
 647         Xstrdup_a(xover_buf, xover_str, return NULL);
 648
 649         PARSE_ONE_PARAM(subject, xover_buf);
 650         PARSE_ONE_PARAM(sender, subject);
 651         PARSE_ONE_PARAM(date, sender);
 652         PARSE_ONE_PARAM(msgid, date);
 653         PARSE_ONE_PARAM(ref, msgid);
 654         PARSE_ONE_PARAM(size, ref);
 655         PARSE_ONE_PARAM(line, size);
 656         /*
 657          * PARSE_ONE_PARAM(xref, line);
 658          *
 659          * if we parse extra headers we should first examine the
 660          * LIST OVERVIEW.FMT response from the server. See
 661          * RFC2980 for details
 662          */
 663
 664         tmp = strchr(line, '\t');
 665         if (!tmp) tmp = strchr(line, '\r');
 666         if (!tmp) tmp = strchr(line, '\n');
 667         if (tmp) *tmp = '\0';
 668
 669         num = atoi(xover_str);
 670         size_int = atoi(size);
 671         line_int = atoi(line);
 672
 673         /* set MsgInfo */
 674         msginfo = procmsg_msginfo_new();
 675         msginfo->msgnum = num;
 676         msginfo->size = size_int;
 677
 678         msginfo->date = g_strdup(date);
 679         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 680
 681         msginfo->from = conv_unmime_header(sender, NULL);
 682         msginfo->fromname = procheader_get_fromname(msginfo->from);
 683
 684         msginfo->subject = conv_unmime_header(subject, NULL);
 685
 686         if (msgid) {
 687                 extract_parenthesis(msgid, '<', '>');
 688                 remove_space(msgid);
 689                 if (*msgid != '\0')
 690                         msginfo->msgid = g_strdup(msgid);
 691         }
 692
 693         /* FIXME: this is a quick fix; references' meaning was changed
 694          * into having the actual list of references in the References: header.
 695          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 696          * their things properly. */
 697         if (ref && strlen(ref)) {
 698                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 699                 guint i = 0;
 700
 701                 while (ref_tokens[i]) {
 702                         gchar *cur_ref = ref_tokens[i];
 703                         msginfo->references = references_list_append(msginfo->references,
 704                                         cur_ref);
 705                         i++;
 706                 }
 707                 g_strfreev(ref_tokens);
 708
 709                 eliminate_parenthesis(ref, '(', ')');
 710                 if ((p = strrchr(ref, '<')) != NULL) {
 711                         extract_parenthesis(p, '<', '>');
 712                         remove_space(p);
 713                         if (*p != '\0')
 714                                 msginfo->inreplyto = g_strdup(p);
 715                 }
 716         }
 717
 718         /*
 719         msginfo->xref = g_strdup(xref);
 720         p = msginfo->xref+strlen(msginfo->xref) - 1;
 721         while (*p == '\r' || *p == '\n') {
 722                 *p = '\0';
 723                 p--;
 724         }
 725         */
 726
 727         return msginfo;
 728 }
 729
 730 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 731 {
 732         gchar *p;
 733         gchar *tmp;
 734         gint num;
 735
 736         p = strchr(xhdr_str, ' ');
 737         if (!p)
 738                 return NULL;
 739         else
 740                 p++;
 741
 742         num = atoi(xhdr_str);
 743         if (msginfo->msgnum != num) return NULL;
 744
 745         tmp = strchr(p, '\r');
 746         if (!tmp) tmp = strchr(p, '\n');
 747
 748         if (tmp)
 749                 return g_strndup(p, tmp - p);
 750         else
 751                 return g_strdup(p);
 752 }
 753
 754 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 755 {
 756         gchar * tmp;
 757         FILE * tmpfp;
 758         gchar buf[BUFFSIZE];
 759
 760         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 761                               G_DIR_SEPARATOR, (gint)msginfo);
 762         if (tmp == NULL)
 763                 return -1;
 764
 765         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 766                 FILE_OP_ERROR(tmp, "fopen");
 767                 return -1;
 768         }
 769         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 770                 FILE_OP_ERROR(tmp, "chmod");
 771                 g_warning("can't change file mode\n");
 772         }
 773
 774         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 775         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 776         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 777         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 778         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 779         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 780         get_rfc822_date(buf, sizeof(buf));
 781         fprintf(tmpfp, "Date: %s\r\n", buf);
 782         fprintf(tmpfp, "\r\n");
 783         fprintf(tmpfp, "removed with sylpheed\r\n");
 784
 785         fclose(tmpfp);
 786
 787         news_post(folder, tmp);
 788         remove(tmp);
 789
 790         g_free(tmp);
 791
 792         return 0;
 793 }
 794
 795 static gchar *news_folder_get_path(Folder *folder)
 796 {
 797         gchar *folder_path;
 798
 799         g_return_val_if_fail(folder->account != NULL, NULL);
 800
 801         folder_path = g_strconcat(get_news_cache_dir(),
 802                                   G_DIR_SEPARATOR_S,
 803                                   folder->account->nntp_server,
 804                                   NULL);
 805         return folder_path;
 806 }
 807
 808 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 809 {
 810         gchar *folder_path, *path;
 811
 812         g_return_val_if_fail(folder != NULL, NULL);
 813         g_return_val_if_fail(item != NULL, NULL);
 814         folder_path = news_folder_get_path(folder);
 815
 816         g_return_val_if_fail(folder_path != NULL, NULL);
 817         if (folder_path[0] == G_DIR_SEPARATOR) {
 818                 if (item->path)
 819                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 820                                            item->path, NULL);
 821                 else
 822                         path = g_strdup(folder_path);
 823         } else {
 824                 if (item->path)
 825                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 826                                            folder_path, G_DIR_SEPARATOR_S,
 827                                            item->path, NULL);
 828                 else
 829                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 830                                            folder_path, NULL);
 831         }
 832         g_free(folder_path);
 833
 834         return path;
 835 }
 836
 837 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 838 {
 839         NNTPSession *session;
 840         gint i, ok, num, first, last, nummsgs = 0;
 841         gchar *dir;
 842
 843         g_return_val_if_fail(item != NULL, -1);
 844         g_return_val_if_fail(item->folder != NULL, -1);
 845         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 846
 847         session = news_session_get(folder);
 848         g_return_val_if_fail(session != NULL, -1);
 849
 850         *old_uids_valid = TRUE;
 851
 852         ok = news_select_group(session, item->path, &num, &first, &last);
 853         if (ok != NN_SUCCESS) {
 854                 log_warning(_("can't set group: %s\n"), item->path);
 855                 return -1;
 856         }
 857
 858         dir = news_folder_get_path(folder);
 859         if (num <= 0)
 860                 remove_all_numbered_files(dir);
 861         else if (last < first)
 862                 log_warning(_("invalid article range: %d - %d\n"),
 863                             first, last);
 864         else {
 865                 for (i = first; i <= last; i++) {
 866                         *msgnum_list = g_slist_prepend(*msgnum_list,
 867                                                        GINT_TO_POINTER(i));
 868                         nummsgs++;
 869                 }
 870                 debug_print("removing old messages from %d to %d in %s\n",
 871                             first, last, dir);
 872                 remove_numbered_files(dir, 1, first - 1);
 873         }
 874         g_free(dir);
 875
 876         return nummsgs;
 877 }
 878
 879 #define READ_TO_LISTEND(hdr) \
 880         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 881                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 882                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 883                         return msginfo; \
 884                 } \
 885         }
 886
 887 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 888 {
 889         NNTPSession *session;
 890         MsgInfo *msginfo = NULL;
 891         gchar buf[NNTPBUFSIZE];
 892         gint ok;
 893
 894         session = news_session_get(folder);
 895         g_return_val_if_fail(session != NULL, NULL);
 896         g_return_val_if_fail(item != NULL, NULL);
 897         g_return_val_if_fail(item->folder != NULL, NULL);
 898         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 899
 900         log_message(_("getting xover %d in %s...\n"),
 901                     num, item->path);
 902         ok = nntp_xover(session, num, num);
 903         if (ok != NN_SUCCESS) {
 904                 log_warning(_("can't get xover\n"));
 905                 if (ok == NN_SOCKET) {
 906                         session_destroy(SESSION(session));
 907                         REMOTE_FOLDER(item->folder)->session = NULL;
 908                 }
 909                 return NULL;
 910         }
 911
 912         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 913                 log_warning(_("error occurred while getting xover.\n"));
 914                 return NULL;
 915         }
 916
 917         msginfo = news_parse_xover(buf);
 918         if (!msginfo) {
 919                 log_warning(_("invalid xover line: %s\n"), buf);
 920         }
 921
 922         READ_TO_LISTEND("xover");
 923
 924         if(!msginfo)
 925                 return NULL;
 926
 927         msginfo->folder = item;
 928         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 929         msginfo->flags.tmp_flags = MSG_NEWS;
 930         msginfo->newsgroups = g_strdup(item->path);
 931
 932         ok = nntp_xhdr(session, "to", num, num);
 933         if (ok != NN_SUCCESS) {
 934                 log_warning(_("can't get xhdr\n"));
 935                 if (ok == NN_SOCKET) {
 936                         session_destroy(SESSION(session));
 937                         REMOTE_FOLDER(item->folder)->session = NULL;
 938                 }
 939                 return msginfo;
 940         }
 941
 942         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 943                 log_warning(_("error occurred while getting xhdr.\n"));
 944                 return msginfo;
 945         }
 946
 947         msginfo->to = news_parse_xhdr(buf, msginfo);
 948
 949         READ_TO_LISTEND("xhdr (to)");
 950
 951         ok = nntp_xhdr(session, "cc", num, num);
 952         if (ok != NN_SUCCESS) {
 953                 log_warning(_("can't get xhdr\n"));
 954                 if (ok == NN_SOCKET) {
 955                         session_destroy(SESSION(session));
 956                         REMOTE_FOLDER(item->folder)->session = NULL;
 957                 }
 958                 return msginfo;
 959         }
 960
 961         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 962                 log_warning(_("error occurred while getting xhdr.\n"));
 963                 return msginfo;
 964         }
 965
 966         msginfo->cc = news_parse_xhdr(buf, msginfo);
 967
 968         READ_TO_LISTEND("xhdr (cc)");
 969
 970         return msginfo;
 971 }
 972
 973 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 974 {
 975         gchar buf[NNTPBUFSIZE];
 976         GSList *newlist = NULL;
 977         GSList *llast = NULL;
 978         MsgInfo *msginfo;
 979         guint count = 0, lines = (end - begin + 2) * 3;
 980         gint ok;
 981
 982         g_return_val_if_fail(session != NULL, NULL);
 983         g_return_val_if_fail(item != NULL, NULL);
 984
 985         log_message(_("getting xover %d - %d in %s...\n"),
 986                     begin, end, item->path);
 987         ok = nntp_xover(session, begin, end);
 988         if (ok != NN_SUCCESS) {
 989                 log_warning(_("can't get xover\n"));
 990                 if (ok == NN_SOCKET) {
 991                         session_destroy(SESSION(session));
 992                         REMOTE_FOLDER(item->folder)->session = NULL;
 993                 }
 994                 return NULL;
 995         }
 996
 997         for (;;) {
 998                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 999                         log_warning(_("error occurred while getting xover.\n"));
1000                         return newlist;
1001                 }
1002                 count++;
1003                 progressindicator_set_percentage
1004                         (PROGRESS_TYPE_NETWORK,
1005                          session->fetch_base_percentage +
1006                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1007
1008                 if (buf[0] == '.' && buf[1] == '\r') break;
1009
1010                 msginfo = news_parse_xover(buf);
1011                 if (!msginfo) {
1012                         log_warning(_("invalid xover line: %s\n"), buf);
1013                         continue;
1014                 }
1015
1016                 msginfo->folder = item;
1017                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1018                 msginfo->flags.tmp_flags = MSG_NEWS;
1019                 msginfo->newsgroups = g_strdup(item->path);
1020
1021                 if (!newlist)
1022                         llast = newlist = g_slist_append(newlist, msginfo);
1023                 else {
1024                         llast = g_slist_append(llast, msginfo);
1025                         llast = llast->next;
1026                 }
1027         }
1028
1029         ok = nntp_xhdr(session, "to", begin, end);
1030         if (ok != NN_SUCCESS) {
1031                 log_warning(_("can't get xhdr\n"));
1032                 if (ok == NN_SOCKET) {
1033                         session_destroy(SESSION(session));
1034                         REMOTE_FOLDER(item->folder)->session = NULL;
1035                 }
1036                 return newlist;
1037         }
1038
1039         llast = newlist;
1040
1041         for (;;) {
1042                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1043                         log_warning(_("error occurred while getting xhdr.\n"));
1044                         return newlist;
1045                 }
1046                 count++;
1047                 progressindicator_set_percentage
1048                         (PROGRESS_TYPE_NETWORK,
1049                          session->fetch_base_percentage +
1050                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1051
1052                 if (buf[0] == '.' && buf[1] == '\r') break;
1053                 if (!llast) {
1054                         g_warning("llast == NULL\n");
1055                         continue;
1056                 }
1057
1058                 msginfo = (MsgInfo *)llast->data;
1059                 msginfo->to = news_parse_xhdr(buf, msginfo);
1060
1061                 llast = llast->next;
1062         }
1063
1064         ok = nntp_xhdr(session, "cc", begin, end);
1065         if (ok != NN_SUCCESS) {
1066                 log_warning(_("can't get xhdr\n"));
1067                 if (ok == NN_SOCKET) {
1068                         session_destroy(SESSION(session));
1069                         REMOTE_FOLDER(item->folder)->session = NULL;
1070                 }
1071                 return newlist;
1072         }
1073
1074         llast = newlist;
1075
1076         for (;;) {
1077                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1078                         log_warning(_("error occurred while getting xhdr.\n"));
1079                         return newlist;
1080                 }
1081                 count++;
1082                 progressindicator_set_percentage
1083                         (PROGRESS_TYPE_NETWORK,
1084                          session->fetch_base_percentage +
1085                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1086
1087                 if (buf[0] == '.' && buf[1] == '\r') break;
1088                 if (!llast) {
1089                         g_warning("llast == NULL\n");
1090                         continue;
1091                 }
1092
1093                 msginfo = (MsgInfo *)llast->data;
1094                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1095
1096                 llast = llast->next;
1097         }
1098
1099         session_set_access_time(SESSION(session));
1100
1101         return newlist;
1102 }
1103
1104 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1105 {
1106         NNTPSession *session;
1107         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1108         guint first, last, next;
1109         guint tofetch, fetched;
1110
1111         g_return_val_if_fail(folder != NULL, NULL);
1112         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1113         g_return_val_if_fail(msgnum_list != NULL, NULL);
1114         g_return_val_if_fail(item != NULL, NULL);
1115
1116         session = news_session_get(folder);
1117         g_return_val_if_fail(session != NULL, NULL);
1118
1119         tmp_msgnum_list = g_slist_copy(msgnum_list);
1120         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1121
1122         progressindicator_start(PROGRESS_TYPE_NETWORK);
1123         tofetch = g_slist_length(tmp_msgnum_list);
1124         fetched = 0;
1125
1126         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1127         last = first;
1128         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1129                 next = GPOINTER_TO_INT(elem->data);
1130                 if(next != (last + 1)) {
1131                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1132                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1133                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1134                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1135                         fetched = last - first + 1;
1136                         first = next;
1137                 }
1138                 last = next;
1139         }
1140         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1141         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1142         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1143         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1144
1145         g_slist_free(tmp_msgnum_list);
1146
1147         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1148
1149         return msginfo_list;
1150 }
1151
1152 gboolean news_scan_required(Folder *folder, FolderItem *item)
1153 {
1154         return TRUE;
1155 }
1156
1157 void news_synchronise(FolderItem *item)
1158 {
1159         news_gtk_synchronise(item);
1160 }