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 &&
 313             !inc_offline_should_override(
 314                 _("Sylpheed-Claws needs network access in order "
 315                   "to access the News server."))) {
 316                 return NULL;
 317         }
 318
 319         if (!rfolder->session) {
 320                 rfolder->session = news_session_new_for_folder(folder);
 321                 return NNTP_SESSION(rfolder->session);
 322         }
 323
 324         if (time(NULL) - rfolder->session->last_access_time <
 325                 SESSION_TIMEOUT_INTERVAL) {
 326                 return NNTP_SESSION(rfolder->session);
 327         }
 328
 329         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 330             != NN_SUCCESS) {
 331                 log_warning(_("NNTP connection to %s:%d has been"
 332                               " disconnected. Reconnecting...\n"),
 333                             folder->account->nntp_server,
 334                             folder->account->set_nntpport ?
 335                             folder->account->nntpport : NNTP_PORT);
 336                 session_destroy(rfolder->session);
 337                 rfolder->session = news_session_new_for_folder(folder);
 338         }
 339
 340         if (rfolder->session)
 341                 session_set_access_time(rfolder->session);
 342
 343         return NNTP_SESSION(rfolder->session);
 344 }
 345
 346 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 347 {
 348         gchar *path, *filename;
 349         NNTPSession *session;
 350         gint ok;
 351
 352         g_return_val_if_fail(folder != NULL, NULL);
 353         g_return_val_if_fail(item != NULL, NULL);
 354
 355         path = folder_item_get_path(item);
 356         if (!is_dir_exist(path))
 357                 make_dir_hier(path);
 358         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 359         g_free(path);
 360
 361         if (is_file_exist(filename)) {
 362                 debug_print("article %d has been already cached.\n", num);
 363                 return filename;
 364         }
 365
 366         session = news_session_get(folder);
 367         if (!session) {
 368                 g_free(filename);
 369                 return NULL;
 370         }
 371
 372         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 373         if (ok != NN_SUCCESS) {
 374                 if (ok == NN_SOCKET) {
 375                         session_destroy(SESSION(session));
 376                         REMOTE_FOLDER(folder)->session = NULL;
 377                 }
 378                 g_free(filename);
 379                 return NULL;
 380         }
 381
 382         debug_print("getting article %d...\n", num);
 383         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 384                               num, filename);
 385         if (ok != NN_SUCCESS) {
 386                 g_warning("can't read article %d\n", num);
 387                 if (ok == NN_SOCKET) {
 388                         session_destroy(SESSION(session));
 389                         REMOTE_FOLDER(folder)->session = NULL;
 390                 }
 391                 g_free(filename);
 392                 return NULL;
 393         }
 394         GTK_EVENTS_FLUSH();
 395         return filename;
 396 }
 397
 398 static NewsGroupInfo *news_group_info_new(const gchar *name,
 399                                           gint first, gint last, gchar type)
 400 {
 401         NewsGroupInfo *ginfo;
 402
 403         ginfo = g_new(NewsGroupInfo, 1);
 404         ginfo->name = g_strdup(name);
 405         ginfo->first = first;
 406         ginfo->last = last;
 407         ginfo->type = type;
 408
 409         return ginfo;
 410 }
 411
 412 static void news_group_info_free(NewsGroupInfo *ginfo)
 413 {
 414         g_free(ginfo->name);
 415         g_free(ginfo);
 416 }
 417
 418 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 419                                     NewsGroupInfo *ginfo2)
 420 {
 421         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 422 }
 423
 424 GSList *news_get_group_list(Folder *folder)
 425 {
 426         gchar *path, *filename;
 427         FILE *fp;
 428         GSList *list = NULL;
 429         GSList *last = NULL;
 430         gchar buf[NNTPBUFSIZE];
 431
 432         g_return_val_if_fail(folder != NULL, NULL);
 433         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 434
 435         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 436         if (!is_dir_exist(path))
 437                 make_dir_hier(path);
 438         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 439         g_free(path);
 440
 441         if ((fp = g_fopen(filename, "rb")) == NULL) {
 442                 NNTPSession *session;
 443                 gint ok;
 444
 445                 session = news_session_get(folder);
 446                 if (!session) {
 447                         g_free(filename);
 448                         return NULL;
 449                 }
 450
 451                 ok = nntp_list(session);
 452                 if (ok != NN_SUCCESS) {
 453                         if (ok == NN_SOCKET) {
 454                                 session_destroy(SESSION(session));
 455                                 REMOTE_FOLDER(folder)->session = NULL;
 456                         }
 457                         g_free(filename);
 458                         return NULL;
 459                 }
 460                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 461                         log_warning(_("can't retrieve newsgroup list\n"));
 462                         session_destroy(SESSION(session));
 463                         REMOTE_FOLDER(folder)->session = NULL;
 464                         g_free(filename);
 465                         return NULL;
 466                 }
 467
 468                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 469                         FILE_OP_ERROR(filename, "fopen");
 470                         g_free(filename);
 471                         return NULL;
 472                 }
 473         }
 474
 475         while (fgets(buf, sizeof(buf), fp) != NULL) {
 476                 gchar *p = buf;
 477                 gchar *name;
 478                 gint last_num;
 479                 gint first_num;
 480                 gchar type;
 481                 NewsGroupInfo *ginfo;
 482
 483                 p = strchr(p, ' ');
 484                 if (!p) continue;
 485                 *p = '\0';
 486                 p++;
 487                 name = buf;
 488
 489                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 490                         continue;
 491
 492                 ginfo = news_group_info_new(name, first_num, last_num, type);
 493
 494                 if (!last)
 495                         last = list = g_slist_append(NULL, ginfo);
 496                 else {
 497                         last = g_slist_append(last, ginfo);
 498                         last = last->next;
 499                 }
 500         }
 501
 502         fclose(fp);
 503         g_free(filename);
 504
 505         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 506
 507         return list;
 508 }
 509
 510 void news_group_list_free(GSList *group_list)
 511 {
 512         GSList *cur;
 513
 514         if (!group_list) return;
 515
 516         for (cur = group_list; cur != NULL; cur = cur->next)
 517                 news_group_info_free((NewsGroupInfo *)cur->data);
 518         g_slist_free(group_list);
 519 }
 520
 521 void news_remove_group_list_cache(Folder *folder)
 522 {
 523         gchar *path, *filename;
 524
 525         g_return_if_fail(folder != NULL);
 526         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 527
 528         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 529         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 530         g_free(path);
 531
 532         if (is_file_exist(filename)) {
 533                 if (remove(filename) < 0)
 534                         FILE_OP_ERROR(filename, "remove");
 535         }
 536         g_free(filename);
 537 }
 538
 539 gint news_post(Folder *folder, const gchar *file)
 540 {
 541         FILE *fp;
 542         gint ok;
 543
 544         g_return_val_if_fail(folder != NULL, -1);
 545         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 546         g_return_val_if_fail(file != NULL, -1);
 547
 548         if ((fp = g_fopen(file, "rb")) == NULL) {
 549                 FILE_OP_ERROR(file, "fopen");
 550                 return -1;
 551         }
 552
 553         ok = news_post_stream(folder, fp);
 554
 555         fclose(fp);
 556
 557         return ok;
 558 }
 559
 560 gint news_post_stream(Folder *folder, FILE *fp)
 561 {
 562         NNTPSession *session;
 563         gint ok;
 564
 565         g_return_val_if_fail(folder != NULL, -1);
 566         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 567         g_return_val_if_fail(fp != NULL, -1);
 568
 569         session = news_session_get(folder);
 570         if (!session) return -1;
 571
 572         ok = nntp_post(session, fp);
 573         if (ok != NN_SUCCESS) {
 574                 log_warning(_("can't post article.\n"));
 575                 if (ok == NN_SOCKET) {
 576                         session_destroy(SESSION(session));
 577                         REMOTE_FOLDER(folder)->session = NULL;
 578                 }
 579                 return -1;
 580         }
 581
 582         return 0;
 583 }
 584
 585 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 586                                  gint num, gchar *filename)
 587 {
 588         gchar *msgid;
 589         gint ok;
 590
 591         ok = nntp_get_article(session, cmd, num, &msgid);
 592         if (ok != NN_SUCCESS)
 593                 return ok;
 594
 595         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 596         g_free(msgid);
 597
 598         ok = recv_write_to_file(SESSION(session)->sock, filename);
 599         if (ok < 0) {
 600                 log_warning(_("can't retrieve article %d\n"), num);
 601                 if (ok == -2)
 602                         return NN_SOCKET;
 603                 else
 604                         return NN_IOERR;
 605         }
 606
 607         return NN_SUCCESS;
 608 }
 609
 610 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 611 {
 612         return news_get_article_cmd(session, "ARTICLE", num, filename);
 613 }
 614
 615 /**
 616  * news_select_group:
 617  * @session: Active NNTP session.
 618  * @group: Newsgroup name.
 619  * @num: Estimated number of articles.
 620  * @first: First article number.
 621  * @last: Last article number.
 622  *
 623  * Select newsgroup @group with the GROUP command if it is not already
 624  * selected in @session, or article numbers need to be returned.
 625  *
 626  * Return value: NNTP result code.
 627  **/
 628 static gint news_select_group(NNTPSession *session, const gchar *group,
 629                               gint *num, gint *first, gint *last)
 630 {
 631         gint ok;
 632         gint num_, first_, last_;
 633
 634         if (!num || !first || !last) {
 635                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 636                         return NN_SUCCESS;
 637                 num = &num_;
 638                 first = &first_;
 639                 last = &last_;
 640         }
 641
 642         g_free(session->group);
 643         session->group = NULL;
 644
 645         ok = nntp_group(session, group, num, first, last);
 646         if (ok == NN_SUCCESS)
 647                 session->group = g_strdup(group);
 648         else
 649                 log_warning(_("can't select group: %s\n"), group);
 650
 651         return ok;
 652 }
 653
 654 #define PARSE_ONE_PARAM(p, srcp) \
 655 { \
 656         p = strchr(srcp, '\t'); \
 657         if (!p) return NULL; \
 658         else \
 659                 *p++ = '\0'; \
 660 }
 661
 662 static MsgInfo *news_parse_xover(const gchar *xover_str)
 663 {
 664         MsgInfo *msginfo;
 665         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 666         gchar *p;
 667         gint num, size_int, line_int;
 668         gchar *xover_buf;
 669
 670         Xstrdup_a(xover_buf, xover_str, return NULL);
 671
 672         PARSE_ONE_PARAM(subject, xover_buf);
 673         PARSE_ONE_PARAM(sender, subject);
 674         PARSE_ONE_PARAM(date, sender);
 675         PARSE_ONE_PARAM(msgid, date);
 676         PARSE_ONE_PARAM(ref, msgid);
 677         PARSE_ONE_PARAM(size, ref);
 678         PARSE_ONE_PARAM(line, size);
 679         /*
 680          * PARSE_ONE_PARAM(xref, line);
 681          *
 682          * if we parse extra headers we should first examine the
 683          * LIST OVERVIEW.FMT response from the server. See
 684          * RFC2980 for details
 685          */
 686
 687         tmp = strchr(line, '\t');
 688         if (!tmp) tmp = strchr(line, '\r');
 689         if (!tmp) tmp = strchr(line, '\n');
 690         if (tmp) *tmp = '\0';
 691
 692         num = atoi(xover_str);
 693         size_int = atoi(size);
 694         line_int = atoi(line);
 695
 696         /* set MsgInfo */
 697         msginfo = procmsg_msginfo_new();
 698         msginfo->msgnum = num;
 699         msginfo->size = size_int;
 700
 701         msginfo->date = g_strdup(date);
 702         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 703
 704         msginfo->from = conv_unmime_header(sender, NULL);
 705         msginfo->fromname = procheader_get_fromname(msginfo->from);
 706
 707         msginfo->subject = conv_unmime_header(subject, NULL);
 708
 709         if (msgid) {
 710                 extract_parenthesis(msgid, '<', '>');
 711                 remove_space(msgid);
 712                 if (*msgid != '\0')
 713                         msginfo->msgid = g_strdup(msgid);
 714         }
 715
 716         /* FIXME: this is a quick fix; references' meaning was changed
 717          * into having the actual list of references in the References: header.
 718          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 719          * their things properly. */
 720         if (ref && strlen(ref)) {
 721                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 722                 guint i = 0;
 723
 724                 while (ref_tokens[i]) {
 725                         gchar *cur_ref = ref_tokens[i];
 726                         msginfo->references = references_list_append(msginfo->references,
 727                                         cur_ref);
 728                         i++;
 729                 }
 730                 g_strfreev(ref_tokens);
 731
 732                 eliminate_parenthesis(ref, '(', ')');
 733                 if ((p = strrchr(ref, '<')) != NULL) {
 734                         extract_parenthesis(p, '<', '>');
 735                         remove_space(p);
 736                         if (*p != '\0')
 737                                 msginfo->inreplyto = g_strdup(p);
 738                 }
 739         }
 740
 741         /*
 742         msginfo->xref = g_strdup(xref);
 743         p = msginfo->xref+strlen(msginfo->xref) - 1;
 744         while (*p == '\r' || *p == '\n') {
 745                 *p = '\0';
 746                 p--;
 747         }
 748         */
 749
 750         return msginfo;
 751 }
 752
 753 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 754 {
 755         gchar *p;
 756         gchar *tmp;
 757         gint num;
 758
 759         p = strchr(xhdr_str, ' ');
 760         if (!p)
 761                 return NULL;
 762         else
 763                 p++;
 764
 765         num = atoi(xhdr_str);
 766         if (msginfo->msgnum != num) return NULL;
 767
 768         tmp = strchr(p, '\r');
 769         if (!tmp) tmp = strchr(p, '\n');
 770
 771         if (tmp)
 772                 return g_strndup(p, tmp - p);
 773         else
 774                 return g_strdup(p);
 775 }
 776
 777 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 778 {
 779         gchar * tmp;
 780         FILE * tmpfp;
 781         gchar buf[BUFFSIZE];
 782
 783         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 784                               G_DIR_SEPARATOR, (gint)msginfo);
 785         if (tmp == NULL)
 786                 return -1;
 787
 788         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 789                 FILE_OP_ERROR(tmp, "fopen");
 790                 return -1;
 791         }
 792         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 793                 FILE_OP_ERROR(tmp, "chmod");
 794                 g_warning("can't change file mode\n");
 795         }
 796
 797         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 798         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 799         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 800         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 801         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 802         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 803         get_rfc822_date(buf, sizeof(buf));
 804         fprintf(tmpfp, "Date: %s\r\n", buf);
 805         fprintf(tmpfp, "\r\n");
 806         fprintf(tmpfp, "removed with sylpheed\r\n");
 807
 808         fclose(tmpfp);
 809
 810         news_post(folder, tmp);
 811         remove(tmp);
 812
 813         g_free(tmp);
 814
 815         return 0;
 816 }
 817
 818 static gchar *news_folder_get_path(Folder *folder)
 819 {
 820         gchar *folder_path;
 821
 822         g_return_val_if_fail(folder->account != NULL, NULL);
 823
 824         folder_path = g_strconcat(get_news_cache_dir(),
 825                                   G_DIR_SEPARATOR_S,
 826                                   folder->account->nntp_server,
 827                                   NULL);
 828         return folder_path;
 829 }
 830
 831 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 832 {
 833         gchar *folder_path, *path;
 834
 835         g_return_val_if_fail(folder != NULL, NULL);
 836         g_return_val_if_fail(item != NULL, NULL);
 837         folder_path = news_folder_get_path(folder);
 838
 839         g_return_val_if_fail(folder_path != NULL, NULL);
 840         if (folder_path[0] == G_DIR_SEPARATOR) {
 841                 if (item->path)
 842                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 843                                            item->path, NULL);
 844                 else
 845                         path = g_strdup(folder_path);
 846         } else {
 847                 if (item->path)
 848                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 849                                            folder_path, G_DIR_SEPARATOR_S,
 850                                            item->path, NULL);
 851                 else
 852                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 853                                            folder_path, NULL);
 854         }
 855         g_free(folder_path);
 856
 857         return path;
 858 }
 859
 860 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 861 {
 862         NNTPSession *session;
 863         gint i, ok, num, first, last, nummsgs = 0;
 864         gchar *dir;
 865
 866         g_return_val_if_fail(item != NULL, -1);
 867         g_return_val_if_fail(item->folder != NULL, -1);
 868         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 869
 870         session = news_session_get(folder);
 871         g_return_val_if_fail(session != NULL, -1);
 872
 873         *old_uids_valid = TRUE;
 874
 875         news_folder_lock(NEWS_FOLDER(item->folder));
 876
 877         ok = news_select_group(session, item->path, &num, &first, &last);
 878         if (ok != NN_SUCCESS) {
 879                 log_warning(_("can't set group: %s\n"), item->path);
 880                 news_folder_unlock(NEWS_FOLDER(item->folder));
 881                 return -1;
 882         }
 883
 884         dir = news_folder_get_path(folder);
 885         if (num <= 0)
 886                 remove_all_numbered_files(dir);
 887         else if (last < first)
 888                 log_warning(_("invalid article range: %d - %d\n"),
 889                             first, last);
 890         else {
 891                 for (i = first; i <= last; i++) {
 892                         *msgnum_list = g_slist_prepend(*msgnum_list,
 893                                                        GINT_TO_POINTER(i));
 894                         nummsgs++;
 895                 }
 896                 debug_print("removing old messages from %d to %d in %s\n",
 897                             first, last, dir);
 898                 remove_numbered_files(dir, 1, first - 1);
 899         }
 900         g_free(dir);
 901         news_folder_unlock(NEWS_FOLDER(item->folder));
 902         return nummsgs;
 903 }
 904
 905 #define READ_TO_LISTEND(hdr) \
 906         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 907                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 908                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 909                         return msginfo; \
 910                 } \
 911         }
 912
 913 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 914 {
 915         NNTPSession *session;
 916         MsgInfo *msginfo = NULL;
 917         gchar buf[NNTPBUFSIZE];
 918         gint ok;
 919
 920         session = news_session_get(folder);
 921         g_return_val_if_fail(session != NULL, NULL);
 922         g_return_val_if_fail(item != NULL, NULL);
 923         g_return_val_if_fail(item->folder != NULL, NULL);
 924         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 925
 926         log_message(_("getting xover %d in %s...\n"),
 927                     num, item->path);
 928         ok = nntp_xover(session, num, num);
 929
 930         news_folder_lock(NEWS_FOLDER(item->folder));
 931
 932         if (ok != NN_SUCCESS) {
 933                 log_warning(_("can't get xover\n"));
 934                 if (ok == NN_SOCKET) {
 935                         session_destroy(SESSION(session));
 936                         REMOTE_FOLDER(item->folder)->session = NULL;
 937                 }
 938                 news_folder_unlock(NEWS_FOLDER(item->folder));
 939                 return NULL;
 940         }
 941
 942         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 943                 log_warning(_("error occurred while getting xover.\n"));
 944                 news_folder_unlock(NEWS_FOLDER(item->folder));
 945                 return NULL;
 946         }
 947
 948         msginfo = news_parse_xover(buf);
 949         if (!msginfo) {
 950                 log_warning(_("invalid xover line: %s\n"), buf);
 951         }
 952
 953         READ_TO_LISTEND("xover");
 954
 955         if(!msginfo) {
 956                 news_folder_unlock(NEWS_FOLDER(item->folder));
 957                 return NULL;
 958         }
 959
 960         msginfo->folder = item;
 961         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 962         msginfo->flags.tmp_flags = MSG_NEWS;
 963         msginfo->newsgroups = g_strdup(item->path);
 964
 965         ok = nntp_xhdr(session, "to", num, num);
 966         if (ok != NN_SUCCESS) {
 967                 log_warning(_("can't get xhdr\n"));
 968                 if (ok == NN_SOCKET) {
 969                         session_destroy(SESSION(session));
 970                         REMOTE_FOLDER(item->folder)->session = NULL;
 971                 }
 972                 news_folder_unlock(NEWS_FOLDER(item->folder));
 973                 return msginfo;
 974         }
 975
 976         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 977                 log_warning(_("error occurred while getting xhdr.\n"));
 978                 news_folder_unlock(NEWS_FOLDER(item->folder));
 979                 return msginfo;
 980         }
 981
 982         msginfo->to = news_parse_xhdr(buf, msginfo);
 983
 984         READ_TO_LISTEND("xhdr (to)");
 985
 986         ok = nntp_xhdr(session, "cc", num, num);
 987         if (ok != NN_SUCCESS) {
 988                 log_warning(_("can't get xhdr\n"));
 989                 if (ok == NN_SOCKET) {
 990                         session_destroy(SESSION(session));
 991                         REMOTE_FOLDER(item->folder)->session = NULL;
 992                 }
 993                 news_folder_unlock(NEWS_FOLDER(item->folder));
 994                 return msginfo;
 995         }
 996
 997         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 998                 log_warning(_("error occurred while getting xhdr.\n"));
 999                 news_folder_unlock(NEWS_FOLDER(item->folder));
1000                 return msginfo;
1001         }
1002
1003         msginfo->cc = news_parse_xhdr(buf, msginfo);
1004
1005         READ_TO_LISTEND("xhdr (cc)");
1006         news_folder_unlock(NEWS_FOLDER(item->folder));
1007         return msginfo;
1008 }
1009
1010 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1011 {
1012         gchar buf[NNTPBUFSIZE];
1013         GSList *newlist = NULL;
1014         GSList *llast = NULL;
1015         MsgInfo *msginfo;
1016         guint count = 0, lines = (end - begin + 2) * 3;
1017         gint ok;
1018
1019         g_return_val_if_fail(session != NULL, NULL);
1020         g_return_val_if_fail(item != NULL, NULL);
1021
1022         log_message(_("getting xover %d - %d in %s...\n"),
1023                     begin, end, item->path);
1024         ok = nntp_xover(session, begin, end);
1025         if (ok != NN_SUCCESS) {
1026                 log_warning(_("can't get xover\n"));
1027                 if (ok == NN_SOCKET) {
1028                         session_destroy(SESSION(session));
1029                         REMOTE_FOLDER(item->folder)->session = NULL;
1030                 }
1031                 return NULL;
1032         }
1033
1034         news_folder_lock(NEWS_FOLDER(item->folder));
1035
1036         for (;;) {
1037                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1038                         log_warning(_("error occurred while getting xover.\n"));
1039                         news_folder_unlock(NEWS_FOLDER(item->folder));
1040                         return newlist;
1041                 }
1042                 count++;
1043                 progressindicator_set_percentage
1044                         (PROGRESS_TYPE_NETWORK,
1045                          session->fetch_base_percentage +
1046                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1047
1048                 if (buf[0] == '.' && buf[1] == '\r') break;
1049
1050                 msginfo = news_parse_xover(buf);
1051                 if (!msginfo) {
1052                         log_warning(_("invalid xover line: %s\n"), buf);
1053                         continue;
1054                 }
1055
1056                 msginfo->folder = item;
1057                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1058                 msginfo->flags.tmp_flags = MSG_NEWS;
1059                 msginfo->newsgroups = g_strdup(item->path);
1060
1061                 if (!newlist)
1062                         llast = newlist = g_slist_append(newlist, msginfo);
1063                 else {
1064                         llast = g_slist_append(llast, msginfo);
1065                         llast = llast->next;
1066                 }
1067         }
1068
1069         ok = nntp_xhdr(session, "to", begin, end);
1070         if (ok != NN_SUCCESS) {
1071                 log_warning(_("can't get xhdr\n"));
1072                 if (ok == NN_SOCKET) {
1073                         session_destroy(SESSION(session));
1074                         REMOTE_FOLDER(item->folder)->session = NULL;
1075                 }
1076                 news_folder_unlock(NEWS_FOLDER(item->folder));
1077                 return newlist;
1078         }
1079
1080         llast = newlist;
1081
1082         for (;;) {
1083                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1084                         log_warning(_("error occurred while getting xhdr.\n"));
1085                         news_folder_unlock(NEWS_FOLDER(item->folder));
1086                         return newlist;
1087                 }
1088                 count++;
1089                 progressindicator_set_percentage
1090                         (PROGRESS_TYPE_NETWORK,
1091                          session->fetch_base_percentage +
1092                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1093
1094                 if (buf[0] == '.' && buf[1] == '\r') break;
1095                 if (!llast) {
1096                         g_warning("llast == NULL\n");
1097                         continue;
1098                 }
1099
1100                 msginfo = (MsgInfo *)llast->data;
1101                 msginfo->to = news_parse_xhdr(buf, msginfo);
1102
1103                 llast = llast->next;
1104         }
1105
1106         ok = nntp_xhdr(session, "cc", begin, end);
1107         if (ok != NN_SUCCESS) {
1108                 log_warning(_("can't get xhdr\n"));
1109                 if (ok == NN_SOCKET) {
1110                         session_destroy(SESSION(session));
1111                         REMOTE_FOLDER(item->folder)->session = NULL;
1112                 }
1113                 news_folder_unlock(NEWS_FOLDER(item->folder));
1114                 return newlist;
1115         }
1116
1117         llast = newlist;
1118
1119         for (;;) {
1120                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1121                         log_warning(_("error occurred while getting xhdr.\n"));
1122                         news_folder_unlock(NEWS_FOLDER(item->folder));
1123                         return newlist;
1124                 }
1125                 count++;
1126                 progressindicator_set_percentage
1127                         (PROGRESS_TYPE_NETWORK,
1128                          session->fetch_base_percentage +
1129                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1130
1131                 if (buf[0] == '.' && buf[1] == '\r') break;
1132                 if (!llast) {
1133                         g_warning("llast == NULL\n");
1134                         continue;
1135                 }
1136
1137                 msginfo = (MsgInfo *)llast->data;
1138                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1139
1140                 llast = llast->next;
1141         }
1142         news_folder_unlock(NEWS_FOLDER(item->folder));
1143
1144         session_set_access_time(SESSION(session));
1145
1146         return newlist;
1147 }
1148
1149 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1150 {
1151         NNTPSession *session;
1152         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1153         guint first, last, next;
1154         guint tofetch, fetched;
1155
1156         g_return_val_if_fail(folder != NULL, NULL);
1157         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1158         g_return_val_if_fail(msgnum_list != NULL, NULL);
1159         g_return_val_if_fail(item != NULL, NULL);
1160
1161         session = news_session_get(folder);
1162         g_return_val_if_fail(session != NULL, NULL);
1163
1164         tmp_msgnum_list = g_slist_copy(msgnum_list);
1165         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1166
1167         progressindicator_start(PROGRESS_TYPE_NETWORK);
1168         tofetch = g_slist_length(tmp_msgnum_list);
1169         fetched = 0;
1170
1171         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1172         last = first;
1173
1174         news_folder_lock(NEWS_FOLDER(item->folder));
1175
1176         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1177                 next = GPOINTER_TO_INT(elem->data);
1178                 if(next != (last + 1)) {
1179                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1180                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1181                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1182                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1183                         fetched = last - first + 1;
1184                         first = next;
1185                 }
1186                 last = next;
1187         }
1188
1189         news_folder_unlock(NEWS_FOLDER(item->folder));
1190
1191         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1192         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1193         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1194         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1195
1196         g_slist_free(tmp_msgnum_list);
1197
1198         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1199
1200         return msginfo_list;
1201 }
1202
1203 gboolean news_scan_required(Folder *folder, FolderItem *item)
1204 {
1205         return TRUE;
1206 }
1207
1208 void news_synchronise(FolderItem *item)
1209 {
1210         news_gtk_synchronise(item);
1211 }