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                           _("Con_tinue connecting"),
 291                           GTK_STOCK_CANCEL, NULL,
 292                           FALSE, NULL, ALERT_WARNING,
 293                           G_ALERTALTERNATE) != G_ALERTDEFAULT)
 294                         return NULL;
 295         }
 296         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 297         session = news_session_new(ac->nntp_server, port, userid, passwd);
 298 #endif
 299         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 300                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 301
 302         g_free(passwd);
 303
 304         return session;
 305 }
 306
 307 static NNTPSession *news_session_get(Folder *folder)
 308 {
 309         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 310
 311         g_return_val_if_fail(folder != NULL, NULL);
 312         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 313         g_return_val_if_fail(folder->account != NULL, NULL);
 314
 315         if (prefs_common.work_offline &&
 316             !inc_offline_should_override(
 317                 _("Sylpheed-Claws needs network access in order "
 318                   "to access the News server."))) {
 319                 return NULL;
 320         }
 321
 322         if (!rfolder->session) {
 323                 rfolder->session = news_session_new_for_folder(folder);
 324                 return NNTP_SESSION(rfolder->session);
 325         }
 326
 327         if (time(NULL) - rfolder->session->last_access_time <
 328                 SESSION_TIMEOUT_INTERVAL) {
 329                 return NNTP_SESSION(rfolder->session);
 330         }
 331
 332         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 333             != NN_SUCCESS) {
 334                 log_warning(_("NNTP connection to %s:%d has been"
 335                               " disconnected. Reconnecting...\n"),
 336                             folder->account->nntp_server,
 337                             folder->account->set_nntpport ?
 338                             folder->account->nntpport : NNTP_PORT);
 339                 session_destroy(rfolder->session);
 340                 rfolder->session = news_session_new_for_folder(folder);
 341         }
 342
 343         if (rfolder->session)
 344                 session_set_access_time(rfolder->session);
 345
 346         return NNTP_SESSION(rfolder->session);
 347 }
 348
 349 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 350 {
 351         gchar *path, *filename;
 352         NNTPSession *session;
 353         gint ok;
 354
 355         g_return_val_if_fail(folder != NULL, NULL);
 356         g_return_val_if_fail(item != NULL, NULL);
 357
 358         path = folder_item_get_path(item);
 359         if (!is_dir_exist(path))
 360                 make_dir_hier(path);
 361         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 362         g_free(path);
 363
 364         if (is_file_exist(filename)) {
 365                 debug_print("article %d has been already cached.\n", num);
 366                 return filename;
 367         }
 368
 369         session = news_session_get(folder);
 370         if (!session) {
 371                 g_free(filename);
 372                 return NULL;
 373         }
 374
 375         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 376         if (ok != NN_SUCCESS) {
 377                 if (ok == NN_SOCKET) {
 378                         session_destroy(SESSION(session));
 379                         REMOTE_FOLDER(folder)->session = NULL;
 380                 }
 381                 g_free(filename);
 382                 return NULL;
 383         }
 384
 385         debug_print("getting article %d...\n", num);
 386         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 387                               num, filename);
 388         if (ok != NN_SUCCESS) {
 389                 g_warning("can't read article %d\n", num);
 390                 if (ok == NN_SOCKET) {
 391                         session_destroy(SESSION(session));
 392                         REMOTE_FOLDER(folder)->session = NULL;
 393                 }
 394                 g_free(filename);
 395                 return NULL;
 396         }
 397         GTK_EVENTS_FLUSH();
 398         return filename;
 399 }
 400
 401 static NewsGroupInfo *news_group_info_new(const gchar *name,
 402                                           gint first, gint last, gchar type)
 403 {
 404         NewsGroupInfo *ginfo;
 405
 406         ginfo = g_new(NewsGroupInfo, 1);
 407         ginfo->name = g_strdup(name);
 408         ginfo->first = first;
 409         ginfo->last = last;
 410         ginfo->type = type;
 411
 412         return ginfo;
 413 }
 414
 415 static void news_group_info_free(NewsGroupInfo *ginfo)
 416 {
 417         g_free(ginfo->name);
 418         g_free(ginfo);
 419 }
 420
 421 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 422                                     NewsGroupInfo *ginfo2)
 423 {
 424         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 425 }
 426
 427 GSList *news_get_group_list(Folder *folder)
 428 {
 429         gchar *path, *filename;
 430         FILE *fp;
 431         GSList *list = NULL;
 432         GSList *last = NULL;
 433         gchar buf[NNTPBUFSIZE];
 434
 435         g_return_val_if_fail(folder != NULL, NULL);
 436         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 437
 438         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 439         if (!is_dir_exist(path))
 440                 make_dir_hier(path);
 441         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 442         g_free(path);
 443
 444         if ((fp = g_fopen(filename, "rb")) == NULL) {
 445                 NNTPSession *session;
 446                 gint ok;
 447
 448                 session = news_session_get(folder);
 449                 if (!session) {
 450                         g_free(filename);
 451                         return NULL;
 452                 }
 453
 454                 ok = nntp_list(session);
 455                 if (ok != NN_SUCCESS) {
 456                         if (ok == NN_SOCKET) {
 457                                 session_destroy(SESSION(session));
 458                                 REMOTE_FOLDER(folder)->session = NULL;
 459                         }
 460                         g_free(filename);
 461                         return NULL;
 462                 }
 463                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 464                         log_warning(_("can't retrieve newsgroup list\n"));
 465                         session_destroy(SESSION(session));
 466                         REMOTE_FOLDER(folder)->session = NULL;
 467                         g_free(filename);
 468                         return NULL;
 469                 }
 470
 471                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 472                         FILE_OP_ERROR(filename, "fopen");
 473                         g_free(filename);
 474                         return NULL;
 475                 }
 476         }
 477
 478         while (fgets(buf, sizeof(buf), fp) != NULL) {
 479                 gchar *p = buf;
 480                 gchar *name;
 481                 gint last_num;
 482                 gint first_num;
 483                 gchar type;
 484                 NewsGroupInfo *ginfo;
 485
 486                 p = strchr(p, ' ');
 487                 if (!p) continue;
 488                 *p = '\0';
 489                 p++;
 490                 name = buf;
 491
 492                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 493                         continue;
 494
 495                 ginfo = news_group_info_new(name, first_num, last_num, type);
 496
 497                 if (!last)
 498                         last = list = g_slist_append(NULL, ginfo);
 499                 else {
 500                         last = g_slist_append(last, ginfo);
 501                         last = last->next;
 502                 }
 503         }
 504
 505         fclose(fp);
 506         g_free(filename);
 507
 508         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 509
 510         return list;
 511 }
 512
 513 void news_group_list_free(GSList *group_list)
 514 {
 515         GSList *cur;
 516
 517         if (!group_list) return;
 518
 519         for (cur = group_list; cur != NULL; cur = cur->next)
 520                 news_group_info_free((NewsGroupInfo *)cur->data);
 521         g_slist_free(group_list);
 522 }
 523
 524 void news_remove_group_list_cache(Folder *folder)
 525 {
 526         gchar *path, *filename;
 527
 528         g_return_if_fail(folder != NULL);
 529         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 530
 531         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 532         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 533         g_free(path);
 534
 535         if (is_file_exist(filename)) {
 536                 if (remove(filename) < 0)
 537                         FILE_OP_ERROR(filename, "remove");
 538         }
 539         g_free(filename);
 540 }
 541
 542 gint news_post(Folder *folder, const gchar *file)
 543 {
 544         FILE *fp;
 545         gint ok;
 546
 547         g_return_val_if_fail(folder != NULL, -1);
 548         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 549         g_return_val_if_fail(file != NULL, -1);
 550
 551         if ((fp = g_fopen(file, "rb")) == NULL) {
 552                 FILE_OP_ERROR(file, "fopen");
 553                 return -1;
 554         }
 555
 556         ok = news_post_stream(folder, fp);
 557
 558         fclose(fp);
 559
 560         return ok;
 561 }
 562
 563 gint news_post_stream(Folder *folder, FILE *fp)
 564 {
 565         NNTPSession *session;
 566         gint ok;
 567
 568         g_return_val_if_fail(folder != NULL, -1);
 569         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 570         g_return_val_if_fail(fp != NULL, -1);
 571
 572         session = news_session_get(folder);
 573         if (!session) return -1;
 574
 575         ok = nntp_post(session, fp);
 576         if (ok != NN_SUCCESS) {
 577                 log_warning(_("can't post article.\n"));
 578                 if (ok == NN_SOCKET) {
 579                         session_destroy(SESSION(session));
 580                         REMOTE_FOLDER(folder)->session = NULL;
 581                 }
 582                 return -1;
 583         }
 584
 585         return 0;
 586 }
 587
 588 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 589                                  gint num, gchar *filename)
 590 {
 591         gchar *msgid;
 592         gint ok;
 593
 594         ok = nntp_get_article(session, cmd, num, &msgid);
 595         if (ok != NN_SUCCESS)
 596                 return ok;
 597
 598         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 599         g_free(msgid);
 600
 601         ok = recv_write_to_file(SESSION(session)->sock, filename);
 602         if (ok < 0) {
 603                 log_warning(_("can't retrieve article %d\n"), num);
 604                 if (ok == -2)
 605                         return NN_SOCKET;
 606                 else
 607                         return NN_IOERR;
 608         }
 609
 610         return NN_SUCCESS;
 611 }
 612
 613 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 614 {
 615         return news_get_article_cmd(session, "ARTICLE", num, filename);
 616 }
 617
 618 /**
 619  * news_select_group:
 620  * @session: Active NNTP session.
 621  * @group: Newsgroup name.
 622  * @num: Estimated number of articles.
 623  * @first: First article number.
 624  * @last: Last article number.
 625  *
 626  * Select newsgroup @group with the GROUP command if it is not already
 627  * selected in @session, or article numbers need to be returned.
 628  *
 629  * Return value: NNTP result code.
 630  **/
 631 static gint news_select_group(NNTPSession *session, const gchar *group,
 632                               gint *num, gint *first, gint *last)
 633 {
 634         gint ok;
 635         gint num_, first_, last_;
 636
 637         if (!num || !first || !last) {
 638                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 639                         return NN_SUCCESS;
 640                 num = &num_;
 641                 first = &first_;
 642                 last = &last_;
 643         }
 644
 645         g_free(session->group);
 646         session->group = NULL;
 647
 648         ok = nntp_group(session, group, num, first, last);
 649         if (ok == NN_SUCCESS)
 650                 session->group = g_strdup(group);
 651         else
 652                 log_warning(_("can't select group: %s\n"), group);
 653
 654         return ok;
 655 }
 656
 657 #define PARSE_ONE_PARAM(p, srcp) \
 658 { \
 659         p = strchr(srcp, '\t'); \
 660         if (!p) return NULL; \
 661         else \
 662                 *p++ = '\0'; \
 663 }
 664
 665 static MsgInfo *news_parse_xover(const gchar *xover_str)
 666 {
 667         MsgInfo *msginfo;
 668         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 669         gchar *p;
 670         gint num, size_int, line_int;
 671         gchar *xover_buf;
 672
 673         Xstrdup_a(xover_buf, xover_str, return NULL);
 674
 675         PARSE_ONE_PARAM(subject, xover_buf);
 676         PARSE_ONE_PARAM(sender, subject);
 677         PARSE_ONE_PARAM(date, sender);
 678         PARSE_ONE_PARAM(msgid, date);
 679         PARSE_ONE_PARAM(ref, msgid);
 680         PARSE_ONE_PARAM(size, ref);
 681         PARSE_ONE_PARAM(line, size);
 682         /*
 683          * PARSE_ONE_PARAM(xref, line);
 684          *
 685          * if we parse extra headers we should first examine the
 686          * LIST OVERVIEW.FMT response from the server. See
 687          * RFC2980 for details
 688          */
 689
 690         tmp = strchr(line, '\t');
 691         if (!tmp) tmp = strchr(line, '\r');
 692         if (!tmp) tmp = strchr(line, '\n');
 693         if (tmp) *tmp = '\0';
 694
 695         num = atoi(xover_str);
 696         size_int = atoi(size);
 697         line_int = atoi(line);
 698
 699         /* set MsgInfo */
 700         msginfo = procmsg_msginfo_new();
 701         msginfo->msgnum = num;
 702         msginfo->size = size_int;
 703
 704         msginfo->date = g_strdup(date);
 705         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 706
 707         msginfo->from = conv_unmime_header(sender, NULL);
 708         msginfo->fromname = procheader_get_fromname(msginfo->from);
 709
 710         msginfo->subject = conv_unmime_header(subject, NULL);
 711
 712         if (msgid) {
 713                 extract_parenthesis(msgid, '<', '>');
 714                 remove_space(msgid);
 715                 if (*msgid != '\0')
 716                         msginfo->msgid = g_strdup(msgid);
 717         }
 718
 719         /* FIXME: this is a quick fix; references' meaning was changed
 720          * into having the actual list of references in the References: header.
 721          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 722          * their things properly. */
 723         if (ref && strlen(ref)) {
 724                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 725                 guint i = 0;
 726
 727                 while (ref_tokens[i]) {
 728                         gchar *cur_ref = ref_tokens[i];
 729                         msginfo->references = references_list_append(msginfo->references,
 730                                         cur_ref);
 731                         i++;
 732                 }
 733                 g_strfreev(ref_tokens);
 734
 735                 eliminate_parenthesis(ref, '(', ')');
 736                 if ((p = strrchr(ref, '<')) != NULL) {
 737                         extract_parenthesis(p, '<', '>');
 738                         remove_space(p);
 739                         if (*p != '\0')
 740                                 msginfo->inreplyto = g_strdup(p);
 741                 }
 742         }
 743
 744         /*
 745         msginfo->xref = g_strdup(xref);
 746         p = msginfo->xref+strlen(msginfo->xref) - 1;
 747         while (*p == '\r' || *p == '\n') {
 748                 *p = '\0';
 749                 p--;
 750         }
 751         */
 752
 753         return msginfo;
 754 }
 755
 756 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 757 {
 758         gchar *p;
 759         gchar *tmp;
 760         gint num;
 761
 762         p = strchr(xhdr_str, ' ');
 763         if (!p)
 764                 return NULL;
 765         else
 766                 p++;
 767
 768         num = atoi(xhdr_str);
 769         if (msginfo->msgnum != num) return NULL;
 770
 771         tmp = strchr(p, '\r');
 772         if (!tmp) tmp = strchr(p, '\n');
 773
 774         if (tmp)
 775                 return g_strndup(p, tmp - p);
 776         else
 777                 return g_strdup(p);
 778 }
 779
 780 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 781 {
 782         gchar * tmp;
 783         FILE * tmpfp;
 784         gchar buf[BUFFSIZE];
 785
 786         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 787                               G_DIR_SEPARATOR, (gint)msginfo);
 788         if (tmp == NULL)
 789                 return -1;
 790
 791         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 792                 FILE_OP_ERROR(tmp, "fopen");
 793                 return -1;
 794         }
 795         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 796                 FILE_OP_ERROR(tmp, "chmod");
 797                 g_warning("can't change file mode\n");
 798         }
 799
 800         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 801         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 802         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 803         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 804         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 805         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 806         get_rfc822_date(buf, sizeof(buf));
 807         fprintf(tmpfp, "Date: %s\r\n", buf);
 808         fprintf(tmpfp, "\r\n");
 809         fprintf(tmpfp, "removed with sylpheed\r\n");
 810
 811         fclose(tmpfp);
 812
 813         news_post(folder, tmp);
 814         remove(tmp);
 815
 816         g_free(tmp);
 817
 818         return 0;
 819 }
 820
 821 static gchar *news_folder_get_path(Folder *folder)
 822 {
 823         gchar *folder_path;
 824
 825         g_return_val_if_fail(folder->account != NULL, NULL);
 826
 827         folder_path = g_strconcat(get_news_cache_dir(),
 828                                   G_DIR_SEPARATOR_S,
 829                                   folder->account->nntp_server,
 830                                   NULL);
 831         return folder_path;
 832 }
 833
 834 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 835 {
 836         gchar *folder_path, *path;
 837
 838         g_return_val_if_fail(folder != NULL, NULL);
 839         g_return_val_if_fail(item != NULL, NULL);
 840         folder_path = news_folder_get_path(folder);
 841
 842         g_return_val_if_fail(folder_path != NULL, NULL);
 843         if (folder_path[0] == G_DIR_SEPARATOR) {
 844                 if (item->path)
 845                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 846                                            item->path, NULL);
 847                 else
 848                         path = g_strdup(folder_path);
 849         } else {
 850                 if (item->path)
 851                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 852                                            folder_path, G_DIR_SEPARATOR_S,
 853                                            item->path, NULL);
 854                 else
 855                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 856                                            folder_path, NULL);
 857         }
 858         g_free(folder_path);
 859
 860         return path;
 861 }
 862
 863 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 864 {
 865         NNTPSession *session;
 866         gint i, ok, num, first, last, nummsgs = 0;
 867         gchar *dir;
 868
 869         g_return_val_if_fail(item != NULL, -1);
 870         g_return_val_if_fail(item->folder != NULL, -1);
 871         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 872
 873         session = news_session_get(folder);
 874         g_return_val_if_fail(session != NULL, -1);
 875
 876         *old_uids_valid = TRUE;
 877
 878         news_folder_lock(NEWS_FOLDER(item->folder));
 879
 880         ok = news_select_group(session, item->path, &num, &first, &last);
 881         if (ok != NN_SUCCESS) {
 882                 log_warning(_("can't set group: %s\n"), item->path);
 883                 news_folder_unlock(NEWS_FOLDER(item->folder));
 884                 return -1;
 885         }
 886
 887         dir = news_folder_get_path(folder);
 888         if (num <= 0)
 889                 remove_all_numbered_files(dir);
 890         else if (last < first)
 891                 log_warning(_("invalid article range: %d - %d\n"),
 892                             first, last);
 893         else {
 894                 for (i = first; i <= last; i++) {
 895                         *msgnum_list = g_slist_prepend(*msgnum_list,
 896                                                        GINT_TO_POINTER(i));
 897                         nummsgs++;
 898                 }
 899                 debug_print("removing old messages from %d to %d in %s\n",
 900                             first, last, dir);
 901                 remove_numbered_files(dir, 1, first - 1);
 902         }
 903         g_free(dir);
 904         news_folder_unlock(NEWS_FOLDER(item->folder));
 905         return nummsgs;
 906 }
 907
 908 #define READ_TO_LISTEND(hdr) \
 909         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 910                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 911                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 912                         return msginfo; \
 913                 } \
 914         }
 915
 916 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 917 {
 918         NNTPSession *session;
 919         MsgInfo *msginfo = NULL;
 920         gchar buf[NNTPBUFSIZE];
 921         gint ok;
 922
 923         session = news_session_get(folder);
 924         g_return_val_if_fail(session != NULL, NULL);
 925         g_return_val_if_fail(item != NULL, NULL);
 926         g_return_val_if_fail(item->folder != NULL, NULL);
 927         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 928
 929         log_message(_("getting xover %d in %s...\n"),
 930                     num, item->path);
 931         ok = nntp_xover(session, num, num);
 932
 933         news_folder_lock(NEWS_FOLDER(item->folder));
 934
 935         if (ok != NN_SUCCESS) {
 936                 log_warning(_("can't get xover\n"));
 937                 if (ok == NN_SOCKET) {
 938                         session_destroy(SESSION(session));
 939                         REMOTE_FOLDER(item->folder)->session = NULL;
 940                 }
 941                 news_folder_unlock(NEWS_FOLDER(item->folder));
 942                 return NULL;
 943         }
 944
 945         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 946                 log_warning(_("error occurred while getting xover.\n"));
 947                 news_folder_unlock(NEWS_FOLDER(item->folder));
 948                 return NULL;
 949         }
 950
 951         msginfo = news_parse_xover(buf);
 952         if (!msginfo) {
 953                 log_warning(_("invalid xover line: %s\n"), buf);
 954         }
 955
 956         READ_TO_LISTEND("xover");
 957
 958         if(!msginfo) {
 959                 news_folder_unlock(NEWS_FOLDER(item->folder));
 960                 return NULL;
 961         }
 962
 963         msginfo->folder = item;
 964         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 965         msginfo->flags.tmp_flags = MSG_NEWS;
 966         msginfo->newsgroups = g_strdup(item->path);
 967
 968         ok = nntp_xhdr(session, "to", num, num);
 969         if (ok != NN_SUCCESS) {
 970                 log_warning(_("can't get xhdr\n"));
 971                 if (ok == NN_SOCKET) {
 972                         session_destroy(SESSION(session));
 973                         REMOTE_FOLDER(item->folder)->session = NULL;
 974                 }
 975                 news_folder_unlock(NEWS_FOLDER(item->folder));
 976                 return msginfo;
 977         }
 978
 979         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 980                 log_warning(_("error occurred while getting xhdr.\n"));
 981                 news_folder_unlock(NEWS_FOLDER(item->folder));
 982                 return msginfo;
 983         }
 984
 985         msginfo->to = news_parse_xhdr(buf, msginfo);
 986
 987         READ_TO_LISTEND("xhdr (to)");
 988
 989         ok = nntp_xhdr(session, "cc", num, num);
 990         if (ok != NN_SUCCESS) {
 991                 log_warning(_("can't get xhdr\n"));
 992                 if (ok == NN_SOCKET) {
 993                         session_destroy(SESSION(session));
 994                         REMOTE_FOLDER(item->folder)->session = NULL;
 995                 }
 996                 news_folder_unlock(NEWS_FOLDER(item->folder));
 997                 return msginfo;
 998         }
 999
1000         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1001                 log_warning(_("error occurred while getting xhdr.\n"));
1002                 news_folder_unlock(NEWS_FOLDER(item->folder));
1003                 return msginfo;
1004         }
1005
1006         msginfo->cc = news_parse_xhdr(buf, msginfo);
1007
1008         READ_TO_LISTEND("xhdr (cc)");
1009         news_folder_unlock(NEWS_FOLDER(item->folder));
1010         return msginfo;
1011 }
1012
1013 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1014 {
1015         gchar buf[NNTPBUFSIZE];
1016         GSList *newlist = NULL;
1017         GSList *llast = NULL;
1018         MsgInfo *msginfo;
1019         guint count = 0, lines = (end - begin + 2) * 3;
1020         gint ok;
1021
1022         g_return_val_if_fail(session != NULL, NULL);
1023         g_return_val_if_fail(item != NULL, NULL);
1024
1025         log_message(_("getting xover %d - %d in %s...\n"),
1026                     begin, end, item->path);
1027         ok = nntp_xover(session, begin, end);
1028         if (ok != NN_SUCCESS) {
1029                 log_warning(_("can't get xover\n"));
1030                 if (ok == NN_SOCKET) {
1031                         session_destroy(SESSION(session));
1032                         REMOTE_FOLDER(item->folder)->session = NULL;
1033                 }
1034                 return NULL;
1035         }
1036
1037         news_folder_lock(NEWS_FOLDER(item->folder));
1038
1039         for (;;) {
1040                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1041                         log_warning(_("error occurred while getting xover.\n"));
1042                         news_folder_unlock(NEWS_FOLDER(item->folder));
1043                         return newlist;
1044                 }
1045                 count++;
1046                 progressindicator_set_percentage
1047                         (PROGRESS_TYPE_NETWORK,
1048                          session->fetch_base_percentage +
1049                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1050
1051                 if (buf[0] == '.' && buf[1] == '\r') break;
1052
1053                 msginfo = news_parse_xover(buf);
1054                 if (!msginfo) {
1055                         log_warning(_("invalid xover line: %s\n"), buf);
1056                         continue;
1057                 }
1058
1059                 msginfo->folder = item;
1060                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1061                 msginfo->flags.tmp_flags = MSG_NEWS;
1062                 msginfo->newsgroups = g_strdup(item->path);
1063
1064                 if (!newlist)
1065                         llast = newlist = g_slist_append(newlist, msginfo);
1066                 else {
1067                         llast = g_slist_append(llast, msginfo);
1068                         llast = llast->next;
1069                 }
1070         }
1071
1072         ok = nntp_xhdr(session, "to", begin, end);
1073         if (ok != NN_SUCCESS) {
1074                 log_warning(_("can't get xhdr\n"));
1075                 if (ok == NN_SOCKET) {
1076                         session_destroy(SESSION(session));
1077                         REMOTE_FOLDER(item->folder)->session = NULL;
1078                 }
1079                 news_folder_unlock(NEWS_FOLDER(item->folder));
1080                 return newlist;
1081         }
1082
1083         llast = newlist;
1084
1085         for (;;) {
1086                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1087                         log_warning(_("error occurred while getting xhdr.\n"));
1088                         news_folder_unlock(NEWS_FOLDER(item->folder));
1089                         return newlist;
1090                 }
1091                 count++;
1092                 progressindicator_set_percentage
1093                         (PROGRESS_TYPE_NETWORK,
1094                          session->fetch_base_percentage +
1095                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1096
1097                 if (buf[0] == '.' && buf[1] == '\r') break;
1098                 if (!llast) {
1099                         g_warning("llast == NULL\n");
1100                         continue;
1101                 }
1102
1103                 msginfo = (MsgInfo *)llast->data;
1104                 msginfo->to = news_parse_xhdr(buf, msginfo);
1105
1106                 llast = llast->next;
1107         }
1108
1109         ok = nntp_xhdr(session, "cc", begin, end);
1110         if (ok != NN_SUCCESS) {
1111                 log_warning(_("can't get xhdr\n"));
1112                 if (ok == NN_SOCKET) {
1113                         session_destroy(SESSION(session));
1114                         REMOTE_FOLDER(item->folder)->session = NULL;
1115                 }
1116                 news_folder_unlock(NEWS_FOLDER(item->folder));
1117                 return newlist;
1118         }
1119
1120         llast = newlist;
1121
1122         for (;;) {
1123                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1124                         log_warning(_("error occurred while getting xhdr.\n"));
1125                         news_folder_unlock(NEWS_FOLDER(item->folder));
1126                         return newlist;
1127                 }
1128                 count++;
1129                 progressindicator_set_percentage
1130                         (PROGRESS_TYPE_NETWORK,
1131                          session->fetch_base_percentage +
1132                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1133
1134                 if (buf[0] == '.' && buf[1] == '\r') break;
1135                 if (!llast) {
1136                         g_warning("llast == NULL\n");
1137                         continue;
1138                 }
1139
1140                 msginfo = (MsgInfo *)llast->data;
1141                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1142
1143                 llast = llast->next;
1144         }
1145         news_folder_unlock(NEWS_FOLDER(item->folder));
1146
1147         session_set_access_time(SESSION(session));
1148
1149         return newlist;
1150 }
1151
1152 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1153 {
1154         NNTPSession *session;
1155         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1156         guint first, last, next;
1157         guint tofetch, fetched;
1158
1159         g_return_val_if_fail(folder != NULL, NULL);
1160         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1161         g_return_val_if_fail(msgnum_list != NULL, NULL);
1162         g_return_val_if_fail(item != NULL, NULL);
1163
1164         session = news_session_get(folder);
1165         g_return_val_if_fail(session != NULL, NULL);
1166
1167         tmp_msgnum_list = g_slist_copy(msgnum_list);
1168         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1169
1170         progressindicator_start(PROGRESS_TYPE_NETWORK);
1171         tofetch = g_slist_length(tmp_msgnum_list);
1172         fetched = 0;
1173
1174         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1175         last = first;
1176
1177         news_folder_lock(NEWS_FOLDER(item->folder));
1178
1179         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1180                 next = GPOINTER_TO_INT(elem->data);
1181                 if(next != (last + 1)) {
1182                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1183                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1184                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1185                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1186                         fetched = last - first + 1;
1187                         first = next;
1188                 }
1189                 last = next;
1190         }
1191
1192         news_folder_unlock(NEWS_FOLDER(item->folder));
1193
1194         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1195         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1196         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1197         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1198
1199         g_slist_free(tmp_msgnum_list);
1200
1201         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1202
1203         return msginfo_list;
1204 }
1205
1206 gboolean news_scan_required(Folder *folder, FolderItem *item)
1207 {
1208         return TRUE;
1209 }
1210
1211 void news_synchronise(FolderItem *item)
1212 {
1213         news_gtk_synchronise(item);
1214 }
1215
1216 static gint news_remove_folder(Folder *folder, FolderItem *item)
1217 {
1218         gchar *path;
1219
1220         g_return_val_if_fail(folder != NULL, -1);
1221         g_return_val_if_fail(item != NULL, -1);
1222         g_return_val_if_fail(item->path != NULL, -1);
1223
1224         path = folder_item_get_path(item);
1225         if (remove_dir_recursive(path) < 0) {
1226                 g_warning("can't remove directory `%s'\n", path);
1227                 g_free(path);
1228                 return -1;
1229         }
1230
1231         g_free(path);
1232         folder_item_remove(item);
1233         return 0;
1234 }