src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <time.h>
  33
  34 #include "intl.h"
  35 #include "news.h"
  36 #include "nntp.h"
  37 #include "socket.h"
  38 #include "recv.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "folder.h"
  42 #include "session.h"
  43 #include "statusbar.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47 #include "prefs_account.h"
  48 #include "inputdialog.h"
  49 #include "log.h"
  50 #include "progressindicator.h"
  51 #if USE_OPENSSL
  52 #  include "ssl.h"
  53 #endif
  54
  55 #define NNTP_PORT       119
  56 #if USE_OPENSSL
  57 #define NNTPS_PORT      563
  58 #endif
  59
  60 static void news_folder_init             (Folder        *folder,
  61                                           const gchar   *name,
  62                                           const gchar   *path);
  63
  64 #if USE_OPENSSL
  65 static Session *news_session_new         (const gchar   *server,
  66                                           gushort        port,
  67                                           const gchar   *userid,
  68                                           const gchar   *passwd,
  69                                           SSLType        ssl_type);
  70 #else
  71 static Session *news_session_new         (const gchar   *server,
  72                                           gushort        port,
  73                                           const gchar   *userid,
  74                                           const gchar   *passwd);
  75 #endif
  76
  77 static gint news_get_article_cmd         (NNTPSession   *session,
  78                                           const gchar   *cmd,
  79                                           gint           num,
  80                                           gchar         *filename);
  81 static gint news_get_article             (NNTPSession   *session,
  82                                           gint           num,
  83                                           gchar         *filename);
  84
  85 static gint news_select_group            (NNTPSession   *session,
  86                                           const gchar   *group,
  87                                           gint          *num,
  88                                           gint          *first,
  89                                           gint          *last);
  90 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  91 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  92                                           MsgInfo       *msginfo);
  93 static gint news_remove_msg              (Folder        *folder,
  94                                           FolderItem    *item,
  95                                           gint           num);
  96 gint news_get_num_list                   (Folder        *folder,
  97                                           FolderItem    *item,
  98                                           GSList       **list);
  99 MsgInfo *news_get_msginfo                (Folder        *folder,
 100                                           FolderItem    *item,
 101                                           gint           num);
 102 GSList *news_get_msginfos                (Folder        *folder,
 103                                           FolderItem    *item,
 104                                           GSList        *msgnum_list);
 105
 106 gint news_post_stream                    (Folder        *folder,
 107                                           FILE          *fp);
 108
 109 FolderClass news_class =
 110 {
 111         F_NEWS,
 112         "news",
 113         "News",
 114
 115         /* Folder functions */
 116         news_folder_new,
 117         news_folder_destroy,
 118         NULL,
 119         NULL,
 120
 121         /* FolderItem functions */
 122         NULL,
 123         NULL,
 124         NULL,
 125         NULL,
 126         NULL,
 127         news_get_num_list,
 128         NULL,
 129         NULL,
 130         NULL,
 131         NULL,
 132
 133         /* Message functions */
 134         news_get_msginfo,
 135         news_get_msginfos,
 136         news_fetch_msg,
 137         NULL,
 138         NULL,
 139         NULL,
 140         NULL,
 141         NULL,
 142         news_remove_msg,
 143         NULL,
 144         NULL,
 145         NULL,
 146         NULL,
 147 };
 148
 149 FolderClass *news_get_class()
 150 {
 151         return &news_class;
 152 }
 153
 154 Folder *news_folder_new(const gchar *name, const gchar *path)
 155 {
 156         Folder *folder;
 157
 158         folder = (Folder *)g_new0(NewsFolder, 1);
 159         folder->class = &news_class;
 160         news_folder_init(folder, name, path);
 161
 162         return folder;
 163 }
 164
 165 void news_folder_destroy(Folder *folder)
 166 {
 167         gchar *dir;
 168
 169         dir = folder_get_path(folder);
 170         if (is_dir_exist(dir))
 171                 remove_dir_recursive(dir);
 172         g_free(dir);
 173
 174         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 175 }
 176
 177 static void news_folder_init(Folder *folder, const gchar *name,
 178                              const gchar *path)
 179 {
 180         folder_remote_folder_init(folder, name, path);
 181 }
 182
 183 #if USE_OPENSSL
 184 static Session *news_session_new(const gchar *server, gushort port,
 185                                  const gchar *userid, const gchar *passwd,
 186                                  SSLType ssl_type)
 187 #else
 188 static Session *news_session_new(const gchar *server, gushort port,
 189                                  const gchar *userid, const gchar *passwd)
 190 #endif
 191 {
 192         gchar buf[NNTPBUFSIZE];
 193         NNTPSession *session;
 194         NNTPSockInfo *nntp_sock;
 195
 196         g_return_val_if_fail(server != NULL, NULL);
 197
 198         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 199
 200 #if USE_OPENSSL
 201         if (userid && passwd)
 202                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd,
 203                                            ssl_type);
 204         else
 205                 nntp_sock = nntp_open(server, port, buf, ssl_type);
 206 #else
 207         if (userid && passwd)
 208                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
 209         else
 210                 nntp_sock = nntp_open(server, port, buf);
 211 #endif
 212
 213         if (nntp_sock == NULL)
 214                 return NULL;
 215
 216         session = g_new(NNTPSession, 1);
 217         SESSION(session)->type             = SESSION_NEWS;
 218         SESSION(session)->server           = g_strdup(server);
 219         session->nntp_sock                 = nntp_sock;
 220         SESSION(session)->sock             = nntp_sock->sock;
 221         SESSION(session)->connected        = TRUE;
 222         SESSION(session)->phase            = SESSION_READY;
 223         SESSION(session)->last_access_time = time(NULL);
 224         SESSION(session)->data             = NULL;
 225
 226         SESSION(session)->destroy          = news_session_destroy;
 227
 228         session->group = NULL;
 229
 230         return SESSION(session);
 231 }
 232
 233 void news_session_destroy(Session *session)
 234 {
 235         nntp_close(NNTP_SESSION(session)->nntp_sock);
 236         NNTP_SESSION(session)->nntp_sock = NULL;
 237         session->sock = NULL;
 238
 239         g_free(NNTP_SESSION(session)->group);
 240 }
 241
 242 static Session *news_session_new_for_folder(Folder *folder)
 243 {
 244         Session *session;
 245         PrefsAccount *ac;
 246         const gchar *userid = NULL;
 247         gchar *passwd = NULL;
 248         gushort port;
 249         gchar buf[NNTPBUFSIZE];
 250
 251         g_return_val_if_fail(folder != NULL, NULL);
 252         g_return_val_if_fail(folder->account != NULL, NULL);
 253
 254         ac = folder->account;
 255         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 256                 userid = ac->userid;
 257                 if (ac->passwd && ac->passwd[0])
 258                         passwd = g_strdup(ac->passwd);
 259                 else
 260                         passwd = input_dialog_query_password(ac->nntp_server,
 261                                                              userid);
 262         }
 263
 264 #if USE_OPENSSL
 265         port = ac->set_nntpport ? ac->nntpport
 266                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 267         session = news_session_new(ac->nntp_server, port, userid, passwd,
 268                                    ac->ssl_nntp);
 269 #else
 270         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 271         session = news_session_new(ac->nntp_server, port, userid, passwd);
 272 #endif
 273         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 274                 nntp_forceauth(NNTP_SESSION(session)->nntp_sock, buf, userid, passwd);
 275
 276         g_free(passwd);
 277
 278         return session;
 279 }
 280
 281 NNTPSession *news_session_get(Folder *folder)
 282 {
 283         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 284
 285         g_return_val_if_fail(folder != NULL, NULL);
 286         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 287         g_return_val_if_fail(folder->account != NULL, NULL);
 288
 289         if (!rfolder->session) {
 290                 rfolder->session = news_session_new_for_folder(folder);
 291                 return NNTP_SESSION(rfolder->session);
 292         }
 293
 294         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 295                 rfolder->session->last_access_time = time(NULL);
 296                 return NNTP_SESSION(rfolder->session);
 297         }
 298
 299         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 300             != NN_SUCCESS) {
 301                 log_warning("NNTP connection to %s:%d has been"
 302                               " disconnected. Reconnecting...\n",
 303                             folder->account->nntp_server,
 304                             folder->account->set_nntpport ?
 305                             folder->account->nntpport : NNTP_PORT);
 306                 session_destroy(rfolder->session);
 307                 rfolder->session = news_session_new_for_folder(folder);
 308         }
 309
 310         if (rfolder->session)
 311                 rfolder->session->last_access_time = time(NULL);
 312         return NNTP_SESSION(rfolder->session);
 313 }
 314
 315 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 316 {
 317         gchar *path, *filename;
 318         NNTPSession *session;
 319         gint ok;
 320
 321         g_return_val_if_fail(folder != NULL, NULL);
 322         g_return_val_if_fail(item != NULL, NULL);
 323
 324         path = folder_item_get_path(item);
 325         if (!is_dir_exist(path))
 326                 make_dir_hier(path);
 327         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 328         g_free(path);
 329
 330         if (is_file_exist(filename)) {
 331                 debug_print("article %d has been already cached.\n", num);
 332                 return filename;
 333         }
 334
 335         session = news_session_get(folder);
 336         if (!session) {
 337                 g_free(filename);
 338                 return NULL;
 339         }
 340
 341         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 342         if (ok != NN_SUCCESS) {
 343                 g_warning("can't select group %s\n", item->path);
 344                 g_free(filename);
 345                 return NULL;
 346         }
 347
 348         debug_print("getting article %d...\n", num);
 349         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 350                               num, filename);
 351         if (ok < 0) {
 352                 g_warning("can't read article %d\n", num);
 353                 session_destroy(SESSION(session));
 354                 REMOTE_FOLDER(folder)->session = NULL;
 355                 g_free(filename);
 356                 return NULL;
 357         }
 358
 359         return filename;
 360 }
 361
 362 gint news_scan_group(Folder *folder, FolderItem *item)
 363 {
 364         NNTPSession *session;
 365         gint num = 0, first = 0, last = 0;
 366         gint ok;
 367
 368         g_return_val_if_fail(folder != NULL, -1);
 369         g_return_val_if_fail(item != NULL, -1);
 370
 371         session = news_session_get(folder);
 372         if (!session) return -1;
 373
 374         ok = news_select_group(session, item->path, &num, &first, &last);
 375         if (ok != NN_SUCCESS) {
 376                 log_warning("can't set group: %s\n", item->path);
 377                 return -1;
 378         }
 379
 380         if (num == 0) {
 381                 item->new = item->unread = item->total = item->last_num = 0;
 382                 return 0;
 383         }
 384
 385 /*
 386         path = folder_item_get_path(item);
 387         if (path && is_dir_exist(path)) {
 388                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 389                                      first);
 390         }
 391         g_free(path);
 392
 393         if (max < first || last < min)
 394                 new = unread = total = num;
 395         else {
 396                 if (min < first)
 397                         min = first;
 398
 399                 if (last < max)
 400                         max = last;
 401                 else if (max < last) {
 402                         new += last - max;
 403                         unread += last - max;
 404                 }
 405
 406                 if (new > num) new = num;
 407                 if (unread > num) unread = num;
 408         }
 409
 410         item->new = new;
 411         item->unread = unread;
 412         item->total = num;
 413         item->last_num = last;
 414 */
 415         return 0;
 416 }
 417
 418 static NewsGroupInfo *news_group_info_new(const gchar *name,
 419                                           gint first, gint last, gchar type)
 420 {
 421         NewsGroupInfo *ginfo;
 422
 423         ginfo = g_new(NewsGroupInfo, 1);
 424         ginfo->name = g_strdup(name);
 425         ginfo->first = first;
 426         ginfo->last = last;
 427         ginfo->type = type;
 428
 429         return ginfo;
 430 }
 431
 432 static void news_group_info_free(NewsGroupInfo *ginfo)
 433 {
 434         g_free(ginfo->name);
 435         g_free(ginfo);
 436 }
 437
 438 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 439                                     NewsGroupInfo *ginfo2)
 440 {
 441         return g_strcasecmp(ginfo1->name, ginfo2->name);
 442 }
 443
 444 GSList *news_get_group_list(Folder *folder)
 445 {
 446         gchar *path, *filename;
 447         FILE *fp;
 448         GSList *list = NULL;
 449         GSList *last = NULL;
 450         gchar buf[NNTPBUFSIZE];
 451
 452         g_return_val_if_fail(folder != NULL, NULL);
 453         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 454
 455         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 456         if (!is_dir_exist(path))
 457                 make_dir_hier(path);
 458         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 459         g_free(path);
 460
 461         if ((fp = fopen(filename, "rb")) == NULL) {
 462                 NNTPSession *session;
 463
 464                 session = news_session_get(folder);
 465                 if (!session) {
 466                         g_free(filename);
 467                         return NULL;
 468                 }
 469
 470                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 471                         g_free(filename);
 472                         return NULL;
 473                 }
 474                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 475                         log_warning("can't retrieve newsgroup list\n");
 476                         session_destroy(SESSION(session));
 477                         REMOTE_FOLDER(folder)->session = NULL;
 478                         g_free(filename);
 479                         return NULL;
 480                 }
 481
 482                 if ((fp = fopen(filename, "rb")) == NULL) {
 483                         FILE_OP_ERROR(filename, "fopen");
 484                         g_free(filename);
 485                         return NULL;
 486                 }
 487         }
 488
 489         while (fgets(buf, sizeof(buf), fp) != NULL) {
 490                 gchar *p = buf;
 491                 gchar *name;
 492                 gint last_num;
 493                 gint first_num;
 494                 gchar type;
 495                 NewsGroupInfo *ginfo;
 496
 497                 p = strchr(p, ' ');
 498                 if (!p) continue;
 499                 *p = '\0';
 500                 p++;
 501                 name = buf;
 502
 503                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 504                         continue;
 505
 506                 ginfo = news_group_info_new(name, first_num, last_num, type);
 507
 508                 if (!last)
 509                         last = list = g_slist_append(NULL, ginfo);
 510                 else {
 511                         last = g_slist_append(last, ginfo);
 512                         last = last->next;
 513                 }
 514         }
 515
 516         fclose(fp);
 517         g_free(filename);
 518
 519         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 520
 521         return list;
 522 }
 523
 524 void news_group_list_free(GSList *group_list)
 525 {
 526         GSList *cur;
 527
 528         if (!group_list) return;
 529
 530         for (cur = group_list; cur != NULL; cur = cur->next)
 531                 news_group_info_free((NewsGroupInfo *)cur->data);
 532         g_slist_free(group_list);
 533 }
 534
 535 void news_remove_group_list_cache(Folder *folder)
 536 {
 537         gchar *path, *filename;
 538
 539         g_return_if_fail(folder != NULL);
 540         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 541
 542         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 543         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 544         g_free(path);
 545
 546         if (is_file_exist(filename)) {
 547                 if (remove(filename) < 0)
 548                         FILE_OP_ERROR(filename, "remove");
 549         }
 550         g_free(filename);
 551 }
 552
 553 gint news_post(Folder *folder, const gchar *file)
 554 {
 555         FILE *fp;
 556         gint ok;
 557
 558         g_return_val_if_fail(folder != NULL, -1);
 559         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 560         g_return_val_if_fail(file != NULL, -1);
 561
 562         if ((fp = fopen(file, "rb")) == NULL) {
 563                 FILE_OP_ERROR(file, "fopen");
 564                 return -1;
 565         }
 566
 567         ok = news_post_stream(folder, fp);
 568
 569         fclose(fp);
 570
 571         return ok;
 572 }
 573
 574 gint news_post_stream(Folder *folder, FILE *fp)
 575 {
 576         NNTPSession *session;
 577         gint ok;
 578
 579         g_return_val_if_fail(folder != NULL, -1);
 580         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 581         g_return_val_if_fail(fp != NULL, -1);
 582
 583         session = news_session_get(folder);
 584         if (!session) return -1;
 585
 586         ok = nntp_post(session->nntp_sock, fp);
 587         if (ok != NN_SUCCESS) {
 588                 log_warning("can't post article.\n");
 589                 return -1;
 590         }
 591
 592         return 0;
 593 }
 594
 595 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 596                                  gint num, gchar *filename)
 597 {
 598         gchar *msgid;
 599
 600         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 601             != NN_SUCCESS)
 602                 return -1;
 603
 604         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 605         g_free(msgid);
 606
 607         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 608                 log_warning("can't retrieve article %d\n", num);
 609                 return -1;
 610         }
 611
 612         return 0;
 613 }
 614
 615 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 616 {
 617         gchar * dir;
 618         gint r;
 619
 620         dir = folder_item_get_path(item);
 621         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 622         r = remove_numbered_files(dir, num, num);
 623         g_free(dir);
 624
 625         return r;
 626 }
 627
 628 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 629 {
 630         return news_get_article_cmd(session, "ARTICLE", num, filename);
 631 }
 632
 633 /**
 634  * news_select_group:
 635  * @session: Active NNTP session.
 636  * @group: Newsgroup name.
 637  * @num: Estimated number of articles.
 638  * @first: First article number.
 639  * @last: Last article number.
 640  *
 641  * Select newsgroup @group with the GROUP command if it is not already
 642  * selected in @session, or article numbers need to be returned.
 643  *
 644  * Return value: NNTP result code.
 645  **/
 646 static gint news_select_group(NNTPSession *session, const gchar *group,
 647                               gint *num, gint *first, gint *last)
 648 {
 649         gint ok;
 650         gint num_, first_, last_;
 651
 652         if (!num || !first || !last) {
 653                 if (session->group && g_strcasecmp(session->group, group) == 0)
 654                         return NN_SUCCESS;
 655                 num = &num_;
 656                 first = &first_;
 657                 last = &last_;
 658         }
 659
 660         g_free(session->group);
 661         session->group = NULL;
 662
 663         ok = nntp_group(session->nntp_sock, group, num, first, last);
 664         if (ok == NN_SUCCESS)
 665                 session->group = g_strdup(group);
 666
 667         return ok;
 668 }
 669
 670 #define PARSE_ONE_PARAM(p, srcp) \
 671 { \
 672         p = strchr(srcp, '\t'); \
 673         if (!p) return NULL; \
 674         else \
 675                 *p++ = '\0'; \
 676 }
 677
 678 static MsgInfo *news_parse_xover(const gchar *xover_str)
 679 {
 680         MsgInfo *msginfo;
 681         gchar buf[NNTPBUFSIZE];
 682         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 683         gchar *p;
 684         gint num, size_int, line_int;
 685         gchar *xover_buf;
 686
 687         Xstrdup_a(xover_buf, xover_str, return NULL);
 688
 689         PARSE_ONE_PARAM(subject, xover_buf);
 690         PARSE_ONE_PARAM(sender, subject);
 691         PARSE_ONE_PARAM(date, sender);
 692         PARSE_ONE_PARAM(msgid, date);
 693         PARSE_ONE_PARAM(ref, msgid);
 694         PARSE_ONE_PARAM(size, ref);
 695         PARSE_ONE_PARAM(line, size);
 696         PARSE_ONE_PARAM(xref, line);
 697
 698         tmp = strchr(xref, '\t');
 699         if (!tmp) tmp = strchr(line, '\r');
 700         if (!tmp) tmp = strchr(line, '\n');
 701         if (tmp) *tmp = '\0';
 702
 703         num = atoi(xover_str);
 704         size_int = atoi(size);
 705         line_int = atoi(line);
 706
 707         /* set MsgInfo */
 708         msginfo = procmsg_msginfo_new();
 709         msginfo->msgnum = num;
 710         msginfo->size = size_int;
 711
 712         msginfo->date = g_strdup(date);
 713         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 714
 715         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 716         msginfo->from = g_strdup(buf);
 717         msginfo->fromname = procheader_get_fromname(buf);
 718
 719         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 720         msginfo->subject = g_strdup(buf);
 721
 722         extract_parenthesis(msgid, '<', '>');
 723         remove_space(msgid);
 724         if (*msgid != '\0')
 725                 msginfo->msgid = g_strdup(msgid);
 726
 727         msginfo->references = g_strdup(ref);
 728         eliminate_parenthesis(ref, '(', ')');
 729         if ((p = strrchr(ref, '<')) != NULL) {
 730                 extract_parenthesis(p, '<', '>');
 731                 remove_space(p);
 732                 if (*p != '\0')
 733                         msginfo->inreplyto = g_strdup(p);
 734         }
 735
 736         msginfo->xref = g_strdup(xref);
 737         p = msginfo->xref+strlen(msginfo->xref) - 1;
 738         while (*p == '\r' || *p == '\n') {
 739                 *p = '\0';
 740                 p--;
 741         }
 742
 743         return msginfo;
 744 }
 745
 746 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 747 {
 748         gchar *p;
 749         gchar *tmp;
 750         gint num;
 751
 752         p = strchr(xhdr_str, ' ');
 753         if (!p)
 754                 return NULL;
 755         else
 756                 p++;
 757
 758         num = atoi(xhdr_str);
 759         if (msginfo->msgnum != num) return NULL;
 760
 761         tmp = strchr(p, '\r');
 762         if (!tmp) tmp = strchr(p, '\n');
 763
 764         if (tmp)
 765                 return g_strndup(p, tmp - p);
 766         else
 767                 return g_strdup(p);
 768 }
 769
 770 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 771 {
 772         gchar * tmp;
 773         FILE * tmpfp;
 774         gchar buf[BUFFSIZE];
 775
 776         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 777                               G_DIR_SEPARATOR, (gint)msginfo);
 778         if (tmp == NULL)
 779                 return -1;
 780
 781         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 782                 FILE_OP_ERROR(tmp, "fopen");
 783                 return -1;
 784         }
 785         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 786                 FILE_OP_ERROR(tmp, "chmod");
 787                 g_warning("can't change file mode\n");
 788         }
 789
 790         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 791         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 792         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 793         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 794         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 795         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 796         get_rfc822_date(buf, sizeof(buf));
 797         fprintf(tmpfp, "Date: %s\r\n", buf);
 798         fprintf(tmpfp, "\r\n");
 799         fprintf(tmpfp, "removed with sylpheed\r\n");
 800
 801         fclose(tmpfp);
 802
 803         news_post(folder, tmp);
 804         remove(tmp);
 805
 806         g_free(tmp);
 807
 808         return 0;
 809 }
 810
 811 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 812 {
 813         NNTPSession *session;
 814         gint i, ok, num, first, last, nummsgs = 0;
 815         gchar *dir;
 816
 817         g_return_val_if_fail(item != NULL, -1);
 818         g_return_val_if_fail(item->folder != NULL, -1);
 819         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 820
 821         session = news_session_get(folder);
 822         g_return_val_if_fail(session != NULL, -1);
 823
 824         ok = news_select_group(session, item->path, &num, &first, &last);
 825         if (ok != NN_SUCCESS) {
 826                 log_warning(_("can't set group: %s\n"), item->path);
 827                 return -1;
 828         }
 829
 830         if(last < first) {
 831                 log_warning(_("invalid article range: %d - %d\n"),
 832                             first, last);
 833                 return 0;
 834         }
 835
 836         for(i = first; i <= last; i++) {
 837                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 838                 nummsgs++;
 839         }
 840
 841         dir = folder_item_get_path(item);
 842         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 843         remove_numbered_files(dir, 1, first - 1);
 844         g_free(dir);
 845
 846         return nummsgs;
 847 }
 848
 849 #define READ_TO_LISTEND(hdr) \
 850         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 851                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 852                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 853                         return msginfo; \
 854                 } \
 855         }
 856
 857 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 858 {
 859         NNTPSession *session;
 860         MsgInfo *msginfo = NULL;
 861         gchar buf[NNTPBUFSIZE];
 862
 863         session = news_session_get(folder);
 864         g_return_val_if_fail(session != NULL, NULL);
 865         g_return_val_if_fail(item != NULL, NULL);
 866         g_return_val_if_fail(item->folder != NULL, NULL);
 867         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 868
 869         log_message(_("getting xover %d in %s...\n"),
 870                     num, item->path);
 871         if (nntp_xover(session->nntp_sock, num, num) != NN_SUCCESS) {
 872                 log_warning(_("can't get xover\n"));
 873                 return NULL;
 874         }
 875
 876         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 877                 log_warning(_("error occurred while getting xover.\n"));
 878                 return NULL;
 879         }
 880
 881         msginfo = news_parse_xover(buf);
 882         if (!msginfo) {
 883                 log_warning(_("invalid xover line: %s\n"), buf);
 884         }
 885
 886         READ_TO_LISTEND("xover");
 887
 888         if(!msginfo)
 889                 return NULL;
 890
 891         msginfo->folder = item;
 892         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 893         msginfo->flags.tmp_flags = MSG_NEWS;
 894         msginfo->newsgroups = g_strdup(item->path);
 895
 896         if (nntp_xhdr(session->nntp_sock, "to", num, num) != NN_SUCCESS) {
 897                 log_warning(_("can't get xhdr\n"));
 898                 return msginfo;
 899         }
 900
 901         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 902                 log_warning(_("error occurred while getting xhdr.\n"));
 903                 return msginfo;
 904         }
 905
 906         msginfo->to = news_parse_xhdr(buf, msginfo);
 907
 908         READ_TO_LISTEND("xhdr (to)");
 909
 910         if (nntp_xhdr(session->nntp_sock, "cc", num, num) != NN_SUCCESS) {
 911                 log_warning(_("can't get xhdr\n"));
 912                 return msginfo;
 913         }
 914
 915         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 916                 log_warning(_("error occurred while getting xhdr.\n"));
 917                 return msginfo;
 918         }
 919
 920         msginfo->cc = news_parse_xhdr(buf, msginfo);
 921
 922         READ_TO_LISTEND("xhdr (cc)");
 923
 924         return msginfo;
 925 }
 926
 927 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 928 {
 929         gchar buf[NNTPBUFSIZE];
 930         GSList *newlist = NULL;
 931         GSList *llast = NULL;
 932         MsgInfo *msginfo;
 933         guint count = 0, lines = (end - begin + 2) * 3;
 934
 935         g_return_val_if_fail(session != NULL, NULL);
 936         g_return_val_if_fail(item != NULL, NULL);
 937
 938         log_message(_("getting xover %d - %d in %s...\n"),
 939                     begin, end, item->path);
 940         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 941                 log_warning(_("can't get xover\n"));
 942                 return NULL;
 943         }
 944
 945         for (;;) {
 946                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 947                         log_warning(_("error occurred while getting xover.\n"));
 948                         return newlist;
 949                 }
 950                 count++;
 951                 progressindicator_set_percentage
 952                         (PROGRESS_TYPE_NETWORK,
 953                          session->fetch_base_percentage +
 954                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 955
 956                 if (buf[0] == '.' && buf[1] == '\r') break;
 957
 958                 msginfo = news_parse_xover(buf);
 959                 if (!msginfo) {
 960                         log_warning(_("invalid xover line: %s\n"), buf);
 961                         continue;
 962                 }
 963
 964                 msginfo->folder = item;
 965                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 966                 msginfo->flags.tmp_flags = MSG_NEWS;
 967                 msginfo->newsgroups = g_strdup(item->path);
 968
 969                 if (!newlist)
 970                         llast = newlist = g_slist_append(newlist, msginfo);
 971                 else {
 972                         llast = g_slist_append(llast, msginfo);
 973                         llast = llast->next;
 974                 }
 975         }
 976
 977         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 978                 log_warning(_("can't get xhdr\n"));
 979                 return newlist;
 980         }
 981
 982         llast = newlist;
 983
 984         for (;;) {
 985                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 986                         log_warning(_("error occurred while getting xhdr.\n"));
 987                         return newlist;
 988                 }
 989                 count++;
 990                 progressindicator_set_percentage
 991                         (PROGRESS_TYPE_NETWORK,
 992                          session->fetch_base_percentage +
 993                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 994
 995                 if (buf[0] == '.' && buf[1] == '\r') break;
 996                 if (!llast) {
 997                         g_warning("llast == NULL\n");
 998                         continue;
 999                 }
1000
1001                 msginfo = (MsgInfo *)llast->data;
1002                 msginfo->to = news_parse_xhdr(buf, msginfo);
1003
1004                 llast = llast->next;
1005         }
1006
1007         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
1008                 log_warning(_("can't get xhdr\n"));
1009                 return newlist;
1010         }
1011
1012         llast = newlist;
1013
1014         for (;;) {
1015                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1016                         log_warning(_("error occurred while getting xhdr.\n"));
1017                         return newlist;
1018                 }
1019                 count++;
1020                 progressindicator_set_percentage
1021                         (PROGRESS_TYPE_NETWORK,
1022                          session->fetch_base_percentage +
1023                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1024
1025                 if (buf[0] == '.' && buf[1] == '\r') break;
1026                 if (!llast) {
1027                         g_warning("llast == NULL\n");
1028                         continue;
1029                 }
1030
1031                 msginfo = (MsgInfo *)llast->data;
1032                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1033
1034                 llast = llast->next;
1035         }
1036
1037         return newlist;
1038 }
1039
1040 gint news_fetch_msgnum_sort(gconstpointer a, gconstpointer b)
1041 {
1042         return (GPOINTER_TO_INT(a) - GPOINTER_TO_INT(b));
1043 }
1044
1045 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1046 {
1047         NNTPSession *session;
1048         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1049         guint first, last, next;
1050         guint tofetch, fetched;
1051
1052         g_return_val_if_fail(folder != NULL, NULL);
1053         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1054         g_return_val_if_fail(msgnum_list != NULL, NULL);
1055         g_return_val_if_fail(item != NULL, NULL);
1056
1057         session = news_session_get(folder);
1058         g_return_val_if_fail(session != NULL, NULL);
1059
1060         tmp_msgnum_list = g_slist_copy(msgnum_list);
1061         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, news_fetch_msgnum_sort);
1062
1063         progressindicator_start(PROGRESS_TYPE_NETWORK);
1064         tofetch = g_slist_length(tmp_msgnum_list);
1065         fetched = 0;
1066
1067         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1068         last = first;
1069         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1070                 next = GPOINTER_TO_INT(elem->data);
1071                 if(next != (last + 1)) {
1072                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1073                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1074                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1075                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1076                         fetched = last - first + 1;
1077                         first = next;
1078                 }
1079                 last = next;
1080         }
1081         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1082         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1083         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1084         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1085
1086         g_slist_free(tmp_msgnum_list);
1087
1088         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1089
1090         return msginfo_list;
1091 }