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