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