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         remove_return(msginfo->from);
 712         remove_return(msginfo->fromname);
 713         remove_return(msginfo->subject);
 714
 715         if (msgid) {
 716                 extract_parenthesis(msgid, '<', '>');
 717                 remove_space(msgid);
 718                 if (*msgid != '\0')
 719                         msginfo->msgid = g_strdup(msgid);
 720         }
 721
 722         /* FIXME: this is a quick fix; references' meaning was changed
 723          * into having the actual list of references in the References: header.
 724          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 725          * their things properly. */
 726         if (ref && strlen(ref)) {
 727                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 728                 guint i = 0;
 729
 730                 while (ref_tokens[i]) {
 731                         gchar *cur_ref = ref_tokens[i];
 732                         msginfo->references = references_list_append(msginfo->references,
 733                                         cur_ref);
 734                         i++;
 735                 }
 736                 g_strfreev(ref_tokens);
 737
 738                 eliminate_parenthesis(ref, '(', ')');
 739                 if ((p = strrchr(ref, '<')) != NULL) {
 740                         extract_parenthesis(p, '<', '>');
 741                         remove_space(p);
 742                         if (*p != '\0')
 743                                 msginfo->inreplyto = g_strdup(p);
 744                 }
 745         }
 746
 747         return msginfo;
 748 }
 749
 750 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 751 {
 752         gchar *p;
 753         gchar *tmp;
 754         gint num;
 755
 756         p = strchr(xhdr_str, ' ');
 757         if (!p)
 758                 return NULL;
 759         else
 760                 p++;
 761
 762         num = atoi(xhdr_str);
 763         if (msginfo->msgnum != num) return NULL;
 764
 765         tmp = strchr(p, '\r');
 766         if (!tmp) tmp = strchr(p, '\n');
 767
 768         if (tmp)
 769                 return g_strndup(p, tmp - p);
 770         else
 771                 return g_strdup(p);
 772 }
 773
 774 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 775 {
 776         gchar * tmp;
 777         FILE * tmpfp;
 778         gchar buf[BUFFSIZE];
 779
 780         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 781                               G_DIR_SEPARATOR, (gint)msginfo);
 782         if (tmp == NULL)
 783                 return -1;
 784
 785         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 786                 FILE_OP_ERROR(tmp, "fopen");
 787                 return -1;
 788         }
 789         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 790                 FILE_OP_ERROR(tmp, "chmod");
 791                 g_warning("can't change file mode\n");
 792         }
 793
 794         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 795         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 796         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 797         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 798         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 799         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 800         get_rfc822_date(buf, sizeof(buf));
 801         fprintf(tmpfp, "Date: %s\r\n", buf);
 802         fprintf(tmpfp, "\r\n");
 803         fprintf(tmpfp, "removed with sylpheed\r\n");
 804
 805         fclose(tmpfp);
 806
 807         news_post(folder, tmp);
 808         remove(tmp);
 809
 810         g_free(tmp);
 811
 812         return 0;
 813 }
 814
 815 static gchar *news_folder_get_path(Folder *folder)
 816 {
 817         gchar *folder_path;
 818
 819         g_return_val_if_fail(folder->account != NULL, NULL);
 820
 821         folder_path = g_strconcat(get_news_cache_dir(),
 822                                   G_DIR_SEPARATOR_S,
 823                                   folder->account->nntp_server,
 824                                   NULL);
 825         return folder_path;
 826 }
 827
 828 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 829 {
 830         gchar *folder_path, *path;
 831
 832         g_return_val_if_fail(folder != NULL, NULL);
 833         g_return_val_if_fail(item != NULL, NULL);
 834         folder_path = news_folder_get_path(folder);
 835
 836         g_return_val_if_fail(folder_path != NULL, NULL);
 837         if (folder_path[0] == G_DIR_SEPARATOR) {
 838                 if (item->path)
 839                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 840                                            item->path, NULL);
 841                 else
 842                         path = g_strdup(folder_path);
 843         } else {
 844                 if (item->path)
 845                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 846                                            folder_path, G_DIR_SEPARATOR_S,
 847                                            item->path, NULL);
 848                 else
 849                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 850                                            folder_path, NULL);
 851         }
 852         g_free(folder_path);
 853
 854         return path;
 855 }
 856
 857 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 858 {
 859         NNTPSession *session;
 860         gint i, ok, num, first, last, nummsgs = 0;
 861         gchar *dir;
 862
 863         g_return_val_if_fail(item != NULL, -1);
 864         g_return_val_if_fail(item->folder != NULL, -1);
 865         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 866
 867         session = news_session_get(folder);
 868         g_return_val_if_fail(session != NULL, -1);
 869
 870         *old_uids_valid = TRUE;
 871
 872         news_folder_lock(NEWS_FOLDER(item->folder));
 873
 874         ok = news_select_group(session, item->path, &num, &first, &last);
 875         if (ok != NN_SUCCESS) {
 876                 log_warning(_("can't set group: %s\n"), item->path);
 877                 news_folder_unlock(NEWS_FOLDER(item->folder));
 878                 return -1;
 879         }
 880
 881         dir = news_folder_get_path(folder);
 882         if (num <= 0)
 883                 remove_all_numbered_files(dir);
 884         else if (last < first)
 885                 log_warning(_("invalid article range: %d - %d\n"),
 886                             first, last);
 887         else {
 888                 for (i = first; i <= last; i++) {
 889                         *msgnum_list = g_slist_prepend(*msgnum_list,
 890                                                        GINT_TO_POINTER(i));
 891                         nummsgs++;
 892                 }
 893                 debug_print("removing old messages from %d to %d in %s\n",
 894                             first, last, dir);
 895                 remove_numbered_files(dir, 1, first - 1);
 896         }
 897         g_free(dir);
 898         news_folder_unlock(NEWS_FOLDER(item->folder));
 899         return nummsgs;
 900 }
 901
 902 #define READ_TO_LISTEND(hdr) \
 903         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 904                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 905                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 906                         return msginfo; \
 907                 } \
 908         }
 909
 910 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 911 {
 912         NNTPSession *session;
 913         MsgInfo *msginfo = NULL;
 914         gchar buf[NNTPBUFSIZE];
 915         gint ok;
 916
 917         session = news_session_get(folder);
 918         g_return_val_if_fail(session != NULL, NULL);
 919         g_return_val_if_fail(item != NULL, NULL);
 920         g_return_val_if_fail(item->folder != NULL, NULL);
 921         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 922
 923         log_message(_("getting xover %d in %s...\n"),
 924                     num, item->path);
 925         ok = nntp_xover(session, num, num);
 926
 927         news_folder_lock(NEWS_FOLDER(item->folder));
 928
 929         if (ok != NN_SUCCESS) {
 930                 log_warning(_("can't get xover\n"));
 931                 if (ok == NN_SOCKET) {
 932                         session_destroy(SESSION(session));
 933                         REMOTE_FOLDER(item->folder)->session = NULL;
 934                 }
 935                 news_folder_unlock(NEWS_FOLDER(item->folder));
 936                 return NULL;
 937         }
 938
 939         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 940                 log_warning(_("error occurred while getting xover.\n"));
 941                 news_folder_unlock(NEWS_FOLDER(item->folder));
 942                 return NULL;
 943         }
 944
 945         msginfo = news_parse_xover(buf);
 946         if (!msginfo) {
 947                 log_warning(_("invalid xover line: %s\n"), buf);
 948         }
 949
 950         READ_TO_LISTEND("xover");
 951
 952         if(!msginfo) {
 953                 news_folder_unlock(NEWS_FOLDER(item->folder));
 954                 return NULL;
 955         }
 956
 957         msginfo->folder = item;
 958         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 959         msginfo->flags.tmp_flags = MSG_NEWS;
 960         msginfo->newsgroups = g_strdup(item->path);
 961
 962         ok = nntp_xhdr(session, "to", num, num);
 963         if (ok != NN_SUCCESS) {
 964                 log_warning(_("can't get xhdr\n"));
 965                 if (ok == NN_SOCKET) {
 966                         session_destroy(SESSION(session));
 967                         REMOTE_FOLDER(item->folder)->session = NULL;
 968                 }
 969                 news_folder_unlock(NEWS_FOLDER(item->folder));
 970                 return msginfo;
 971         }
 972
 973         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 974                 log_warning(_("error occurred while getting xhdr.\n"));
 975                 news_folder_unlock(NEWS_FOLDER(item->folder));
 976                 return msginfo;
 977         }
 978
 979         msginfo->to = news_parse_xhdr(buf, msginfo);
 980
 981         READ_TO_LISTEND("xhdr (to)");
 982
 983         ok = nntp_xhdr(session, "cc", num, num);
 984         if (ok != NN_SUCCESS) {
 985                 log_warning(_("can't get xhdr\n"));
 986                 if (ok == NN_SOCKET) {
 987                         session_destroy(SESSION(session));
 988                         REMOTE_FOLDER(item->folder)->session = NULL;
 989                 }
 990                 news_folder_unlock(NEWS_FOLDER(item->folder));
 991                 return msginfo;
 992         }
 993
 994         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 995                 log_warning(_("error occurred while getting xhdr.\n"));
 996                 news_folder_unlock(NEWS_FOLDER(item->folder));
 997                 return msginfo;
 998         }
 999
1000         msginfo->cc = news_parse_xhdr(buf, msginfo);
1001
1002         READ_TO_LISTEND("xhdr (cc)");
1003         news_folder_unlock(NEWS_FOLDER(item->folder));
1004         return msginfo;
1005 }
1006
1007 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1008 {
1009         gchar buf[NNTPBUFSIZE];
1010         GSList *newlist = NULL;
1011         GSList *llast = NULL;
1012         MsgInfo *msginfo;
1013         guint count = 0, lines = (end - begin) + 2;
1014         gint ok;
1015
1016         g_return_val_if_fail(session != NULL, NULL);
1017         g_return_val_if_fail(item != NULL, NULL);
1018
1019         log_message(_("getting xover %d - %d in %s...\n"),
1020                     begin, end, item->path);
1021         ok = nntp_xover(session, begin, end);
1022         if (ok != NN_SUCCESS) {
1023                 log_warning(_("can't get xover\n"));
1024                 if (ok == NN_SOCKET) {
1025                         session_destroy(SESSION(session));
1026                         REMOTE_FOLDER(item->folder)->session = NULL;
1027                 }
1028                 return NULL;
1029         }
1030
1031         news_folder_lock(NEWS_FOLDER(item->folder));
1032
1033         for (;;) {
1034                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1035                         log_warning(_("error occurred while getting xover.\n"));
1036                         news_folder_unlock(NEWS_FOLDER(item->folder));
1037                         return newlist;
1038                 }
1039                 count++;
1040                 progressindicator_set_percentage
1041                         (PROGRESS_TYPE_NETWORK,
1042                          session->fetch_base_percentage +
1043                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1044
1045                 if (buf[0] == '.' && buf[1] == '\r') break;
1046
1047                 msginfo = news_parse_xover(buf);
1048                 if (!msginfo) {
1049                         log_warning(_("invalid xover line: %s\n"), buf);
1050                         continue;
1051                 }
1052
1053                 msginfo->folder = item;
1054                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1055                 msginfo->flags.tmp_flags = MSG_NEWS;
1056                 msginfo->newsgroups = g_strdup(item->path);
1057
1058                 if (!newlist)
1059                         llast = newlist = g_slist_append(newlist, msginfo);
1060                 else {
1061                         llast = g_slist_append(llast, msginfo);
1062                         llast = llast->next;
1063                 }
1064         }
1065
1066         ok = nntp_xhdr(session, "to", begin, end);
1067         if (ok != NN_SUCCESS) {
1068                 log_warning(_("can't get xhdr\n"));
1069                 if (ok == NN_SOCKET) {
1070                         session_destroy(SESSION(session));
1071                         REMOTE_FOLDER(item->folder)->session = NULL;
1072                 }
1073                 news_folder_unlock(NEWS_FOLDER(item->folder));
1074                 return newlist;
1075         }
1076
1077         llast = newlist;
1078
1079         for (;;) {
1080                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1081                         log_warning(_("error occurred while getting xhdr.\n"));
1082                         news_folder_unlock(NEWS_FOLDER(item->folder));
1083                         return newlist;
1084                 }
1085
1086                 if (buf[0] == '.' && buf[1] == '\r') break;
1087                 if (!llast) {
1088                         g_warning("llast == NULL\n");
1089                         continue;
1090                 }
1091
1092                 msginfo = (MsgInfo *)llast->data;
1093                 msginfo->to = news_parse_xhdr(buf, msginfo);
1094
1095                 llast = llast->next;
1096         }
1097
1098         ok = nntp_xhdr(session, "cc", begin, end);
1099         if (ok != NN_SUCCESS) {
1100                 log_warning(_("can't get xhdr\n"));
1101                 if (ok == NN_SOCKET) {
1102                         session_destroy(SESSION(session));
1103                         REMOTE_FOLDER(item->folder)->session = NULL;
1104                 }
1105                 news_folder_unlock(NEWS_FOLDER(item->folder));
1106                 return newlist;
1107         }
1108
1109         llast = newlist;
1110
1111         for (;;) {
1112                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1113                         log_warning(_("error occurred while getting xhdr.\n"));
1114                         news_folder_unlock(NEWS_FOLDER(item->folder));
1115                         return newlist;
1116                 }
1117
1118                 if (buf[0] == '.' && buf[1] == '\r') break;
1119                 if (!llast) {
1120                         g_warning("llast == NULL\n");
1121                         continue;
1122                 }
1123
1124                 msginfo = (MsgInfo *)llast->data;
1125                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1126
1127                 llast = llast->next;
1128         }
1129         news_folder_unlock(NEWS_FOLDER(item->folder));
1130
1131         session_set_access_time(SESSION(session));
1132
1133         return newlist;
1134 }
1135
1136 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1137 {
1138         NNTPSession *session;
1139         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1140         guint first, last, next;
1141         guint tofetch, fetched;
1142
1143         g_return_val_if_fail(folder != NULL, NULL);
1144         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1145         g_return_val_if_fail(msgnum_list != NULL, NULL);
1146         g_return_val_if_fail(item != NULL, NULL);
1147
1148         session = news_session_get(folder);
1149         g_return_val_if_fail(session != NULL, NULL);
1150
1151         tmp_msgnum_list = g_slist_copy(msgnum_list);
1152         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1153
1154         progressindicator_start(PROGRESS_TYPE_NETWORK);
1155         tofetch = g_slist_length(tmp_msgnum_list);
1156         fetched = 0;
1157
1158         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1159         last = first;
1160
1161         news_folder_lock(NEWS_FOLDER(item->folder));
1162
1163         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1164                 next = GPOINTER_TO_INT(elem->data);
1165                 if(next != (last + 1)) {
1166                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1167                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1168                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1169                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1170                         fetched = last - first + 1;
1171                         first = next;
1172                 }
1173                 last = next;
1174         }
1175
1176         news_folder_unlock(NEWS_FOLDER(item->folder));
1177
1178         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1179         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1180         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1181         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1182
1183         g_slist_free(tmp_msgnum_list);
1184
1185         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1186
1187         return msginfo_list;
1188 }
1189
1190 gboolean news_scan_required(Folder *folder, FolderItem *item)
1191 {
1192         return TRUE;
1193 }
1194
1195 void news_synchronise(FolderItem *item)
1196 {
1197         news_gtk_synchronise(item);
1198 }
1199
1200 static gint news_remove_folder(Folder *folder, FolderItem *item)
1201 {
1202         gchar *path;
1203
1204         g_return_val_if_fail(folder != NULL, -1);
1205         g_return_val_if_fail(item != NULL, -1);
1206         g_return_val_if_fail(item->path != NULL, -1);
1207
1208         path = folder_item_get_path(item);
1209         if (remove_dir_recursive(path) < 0) {
1210                 g_warning("can't remove directory `%s'\n", path);
1211                 g_free(path);
1212                 return -1;
1213         }
1214
1215         g_free(path);
1216         folder_item_remove(item);
1217         return 0;
1218 }