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 "alertpanel.h"
  50 #if USE_SSL
  51 #  include "ssl.h"
  52 #endif
  53
  54 #define NNTP_PORT       119
  55 #if USE_SSL
  56 #define NNTPS_PORT      563
  57 #endif
  58
  59 static void news_folder_init             (Folder        *folder,
  60                                           const gchar   *name,
  61                                           const gchar   *path);
  62
  63 #if USE_SSL
  64 static Session *news_session_new         (const gchar   *server,
  65                                           gushort        port,
  66                                           const gchar   *userid,
  67                                           const gchar   *passwd,
  68                                           SSLType        ssl_type);
  69 #else
  70 static Session *news_session_new         (const gchar   *server,
  71                                           gushort        port,
  72                                           const gchar   *userid,
  73                                           const gchar   *passwd);
  74 #endif
  75
  76 static gint news_get_article_cmd         (NNTPSession   *session,
  77                                           const gchar   *cmd,
  78                                           gint           num,
  79                                           gchar         *filename);
  80 static gint news_get_article             (NNTPSession   *session,
  81                                           gint           num,
  82                                           gchar         *filename);
  83
  84 static gint news_select_group            (NNTPSession   *session,
  85                                           const gchar   *group,
  86                                           gint          *num,
  87                                           gint          *first,
  88                                           gint          *last);
  89 static GSList *news_get_uncached_articles(NNTPSession   *session,
  90                                           FolderItem    *item,
  91                                           gint           cache_last,
  92                                           gint          *rfirst,
  93                                           gint          *rlast);
  94 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  95 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  96                                           MsgInfo       *msginfo);
  97 static GSList *news_delete_old_articles  (GSList        *alist,
  98                                           FolderItem    *item,
  99                                           gint           first);
 100 static void news_delete_all_articles     (FolderItem    *item);
 101 static void news_delete_expired_caches   (GSList        *alist,
 102                                           FolderItem    *item);
 103
 104 static gint news_remove_msg              (Folder        *folder,
 105                                           FolderItem    *item,
 106                                           gint           num);
 107 gint news_get_num_list                   (Folder        *folder,
 108                                           FolderItem    *item,
 109                                           GSList       **list);
 110 MsgInfo *news_fetch_msginfo              (Folder        *folder,
 111                                           FolderItem    *item,
 112                                           gint           num);
 113 GSList *news_fetch_msginfos              (Folder        *folder,
 114                                           FolderItem    *item,
 115                                           GSList        *msgnum_list);
 116
 117 gint news_post_stream                    (Folder        *folder,
 118                                           FILE          *fp);
 119
 120 Folder *news_folder_new(const gchar *name, const gchar *path)
 121 {
 122         Folder *folder;
 123
 124         folder = (Folder *)g_new0(NewsFolder, 1);
 125         news_folder_init(folder, name, path);
 126
 127         return folder;
 128 }
 129
 130 void news_folder_destroy(Folder *folder)
 131 {
 132         gchar *dir;
 133
 134         dir = folder_get_path(folder);
 135         if (is_dir_exist(dir))
 136                 remove_dir_recursive(dir);
 137         g_free(dir);
 138
 139         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 140 }
 141
 142 static void news_folder_init(Folder *folder, const gchar *name,
 143                              const gchar *path)
 144 {
 145         folder->type = F_NEWS;
 146
 147         folder_remote_folder_init(folder, name, path);
 148
 149 /*
 150         folder->get_msg_list = news_get_article_list;
 151 */
 152         folder->fetch_msg    = news_fetch_msg;
 153 /*
 154         folder->scan         = news_scan_group;
 155 */
 156         folder->destroy      = news_folder_destroy;
 157         folder->remove_msg   = news_remove_msg;
 158         folder->get_num_list = news_get_num_list;
 159         folder->fetch_msginfo = news_fetch_msginfo;
 160         folder->fetch_msginfos = news_fetch_msginfos;
 161 }
 162
 163 #if USE_SSL
 164 static Session *news_session_new(const gchar *server, gushort port,
 165                                  const gchar *userid, const gchar *passwd,
 166                                  SSLType ssl_type)
 167 #else
 168 static Session *news_session_new(const gchar *server, gushort port,
 169                                  const gchar *userid, const gchar *passwd)
 170 #endif
 171 {
 172         gchar buf[NNTPBUFSIZE];
 173         NNTPSession *session;
 174         NNTPSockInfo *nntp_sock;
 175
 176         g_return_val_if_fail(server != NULL, NULL);
 177
 178         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 179
 180 #if USE_SSL
 181         if (userid && passwd)
 182                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd,
 183                                            ssl_type);
 184         else
 185                 nntp_sock = nntp_open(server, port, buf, ssl_type);
 186 #else
 187         if (userid && passwd)
 188                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
 189         else
 190                 nntp_sock = nntp_open(server, port, buf);
 191 #endif
 192
 193         if (nntp_sock == NULL)
 194                 return NULL;
 195
 196         session = g_new(NNTPSession, 1);
 197         SESSION(session)->type             = SESSION_NEWS;
 198         SESSION(session)->server           = g_strdup(server);
 199         session->nntp_sock                 = nntp_sock;
 200         SESSION(session)->sock             = nntp_sock->sock;
 201         SESSION(session)->connected        = TRUE;
 202         SESSION(session)->phase            = SESSION_READY;
 203         SESSION(session)->last_access_time = time(NULL);
 204         SESSION(session)->data             = NULL;
 205
 206         SESSION(session)->destroy          = news_session_destroy;
 207
 208         session->group = NULL;
 209
 210         return SESSION(session);
 211 }
 212
 213 void news_session_destroy(Session *session)
 214 {
 215         nntp_close(NNTP_SESSION(session)->nntp_sock);
 216         NNTP_SESSION(session)->nntp_sock = NULL;
 217         session->sock = NULL;
 218
 219         g_free(NNTP_SESSION(session)->group);
 220 }
 221
 222 static Session *news_session_new_for_folder(Folder *folder)
 223 {
 224         Session *session;
 225         PrefsAccount *ac;
 226         const gchar *userid = NULL;
 227         gchar *passwd = NULL;
 228         gushort port;
 229
 230         g_return_val_if_fail(folder != NULL, NULL);
 231         g_return_val_if_fail(folder->account != NULL, NULL);
 232
 233         ac = folder->account;
 234         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 235                 userid = ac->userid;
 236                 if (ac->passwd && ac->passwd[0])
 237                         passwd = g_strdup(ac->passwd);
 238                 else
 239                         passwd = input_dialog_query_password(ac->nntp_server,
 240                                                              userid);
 241         }
 242
 243 #if USE_SSL
 244         port = ac->set_nntpport ? ac->nntpport
 245                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 246         session = news_session_new(ac->nntp_server, port, userid, passwd,
 247                                    ac->ssl_nntp);
 248 #else
 249         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 250         session = news_session_new(ac->nntp_server, port, userid, passwd);
 251 #endif
 252
 253         g_free(passwd);
 254
 255         return session;
 256 }
 257
 258 NNTPSession *news_session_get(Folder *folder)
 259 {
 260         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 261
 262         g_return_val_if_fail(folder != NULL, NULL);
 263         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 264         g_return_val_if_fail(folder->account != NULL, NULL);
 265
 266         if (!rfolder->session) {
 267                 rfolder->session = news_session_new_for_folder(folder);
 268                 statusbar_pop_all();
 269                 return NNTP_SESSION(rfolder->session);
 270         }
 271
 272         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 273                 rfolder->session->last_access_time = time(NULL);
 274                 statusbar_pop_all();
 275                 return NNTP_SESSION(rfolder->session);
 276         }
 277
 278         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 279             != NN_SUCCESS) {
 280                 log_warning(_("NNTP connection to %s:%d has been"
 281                               " disconnected. Reconnecting...\n"),
 282                             folder->account->nntp_server,
 283                             folder->account->set_nntpport ?
 284                             folder->account->nntpport : NNTP_PORT);
 285                 session_destroy(rfolder->session);
 286                 rfolder->session = news_session_new_for_folder(folder);
 287         }
 288
 289         if (rfolder->session)
 290                 rfolder->session->last_access_time = time(NULL);
 291         statusbar_pop_all();
 292         return NNTP_SESSION(rfolder->session);
 293 }
 294
 295 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 296                               gboolean use_cache)
 297 {
 298         GSList *alist;
 299         NNTPSession *session;
 300
 301         g_return_val_if_fail(folder != NULL, NULL);
 302         g_return_val_if_fail(item != NULL, NULL);
 303         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 304
 305         session = news_session_get(folder);
 306
 307         if (!session) {
 308                 alist = procmsg_read_cache(item, FALSE);
 309                 item->last_num = procmsg_get_last_num_in_msg_list(alist);
 310         } else if (use_cache) {
 311                 GSList *newlist;
 312                 gint cache_last;
 313                 gint first, last;
 314
 315                 alist = procmsg_read_cache(item, FALSE);
 316
 317                 cache_last = procmsg_get_last_num_in_msg_list(alist);
 318                 newlist = news_get_uncached_articles
 319                         (session, item, cache_last, &first, &last);
 320                 if (first == 0 && last == 0) {
 321                         news_delete_all_articles(item);
 322                         procmsg_msg_list_free(alist);
 323                         alist = NULL;
 324                 } else {
 325                         alist = news_delete_old_articles(alist, item, first);
 326                         news_delete_expired_caches(alist, item);
 327                 }
 328
 329                 alist = g_slist_concat(alist, newlist);
 330
 331                 item->last_num = last;
 332         } else {
 333                 gint last;
 334
 335                 alist = news_get_uncached_articles
 336                         (session, item, 0, NULL, &last);
 337                 news_delete_all_articles(item);
 338                 item->last_num = last;
 339         }
 340
 341         procmsg_set_flags(alist, item);
 342
 343         statusbar_pop_all();
 344
 345         return alist;
 346 }
 347
 348 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 349 {
 350         gchar *path, *filename;
 351         NNTPSession *session;
 352         gint ok;
 353
 354         g_return_val_if_fail(folder != NULL, NULL);
 355         g_return_val_if_fail(item != NULL, NULL);
 356
 357         path = folder_item_get_path(item);
 358         if (!is_dir_exist(path))
 359                 make_dir_hier(path);
 360         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 361         g_free(path);
 362
 363         if (is_file_exist(filename)) {
 364                 debug_print("article %d has been already cached.\n", num);
 365                 return filename;
 366         }
 367
 368         session = news_session_get(folder);
 369         if (!session) {
 370                 g_free(filename);
 371                 return NULL;
 372         }
 373
 374         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 375         statusbar_pop_all();
 376         if (ok != NN_SUCCESS) {
 377                 g_warning(_("can't select group %s\n"), item->path);
 378                 g_free(filename);
 379                 return NULL;
 380         }
 381
 382         debug_print("getting article %d...\n", num);
 383         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 384                               num, filename);
 385         statusbar_pop_all();
 386         if (ok < 0) {
 387                 g_warning(_("can't read article %d\n"), num);
 388                 g_free(filename);
 389                 return NULL;
 390         }
 391
 392         return filename;
 393 }
 394
 395 gint news_scan_group(Folder *folder, FolderItem *item)
 396 {
 397         NNTPSession *session;
 398         gint num = 0, first = 0, last = 0;
 399         gint ok;
 400
 401         g_return_val_if_fail(folder != NULL, -1);
 402         g_return_val_if_fail(item != NULL, -1);
 403
 404         session = news_session_get(folder);
 405         if (!session) return -1;
 406
 407         ok = news_select_group(session, item->path, &num, &first, &last);
 408         if (ok != NN_SUCCESS) {
 409                 log_warning(_("can't set group: %s\n"), item->path);
 410                 return -1;
 411         }
 412
 413         if (num == 0) {
 414                 item->new = item->unread = item->total = item->last_num = 0;
 415                 return 0;
 416         }
 417
 418 /*
 419         path = folder_item_get_path(item);
 420         if (path && is_dir_exist(path)) {
 421                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 422                                      first);
 423         }
 424         g_free(path);
 425
 426         if (max < first || last < min)
 427                 new = unread = total = num;
 428         else {
 429                 if (min < first)
 430                         min = first;
 431
 432                 if (last < max)
 433                         max = last;
 434                 else if (max < last) {
 435                         new += last - max;
 436                         unread += last - max;
 437                 }
 438
 439                 if (new > num) new = num;
 440                 if (unread > num) unread = num;
 441         }
 442
 443         item->new = new;
 444         item->unread = unread;
 445         item->total = num;
 446         item->last_num = last;
 447 */
 448         return 0;
 449 }
 450
 451 static NewsGroupInfo *news_group_info_new(const gchar *name,
 452                                           gint first, gint last, gchar type)
 453 {
 454         NewsGroupInfo *ginfo;
 455
 456         ginfo = g_new(NewsGroupInfo, 1);
 457         ginfo->name = g_strdup(name);
 458         ginfo->first = first;
 459         ginfo->last = last;
 460         ginfo->type = type;
 461
 462         return ginfo;
 463 }
 464
 465 static void news_group_info_free(NewsGroupInfo *ginfo)
 466 {
 467         g_free(ginfo->name);
 468         g_free(ginfo);
 469 }
 470
 471 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 472                                     NewsGroupInfo *ginfo2)
 473 {
 474         return g_strcasecmp(ginfo1->name, ginfo2->name);
 475 }
 476
 477 GSList *news_get_group_list(Folder *folder)
 478 {
 479         gchar *path, *filename;
 480         FILE *fp;
 481         GSList *list = NULL;
 482         GSList *last = NULL;
 483         gchar buf[NNTPBUFSIZE];
 484
 485         g_return_val_if_fail(folder != NULL, NULL);
 486         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 487
 488         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 489         if (!is_dir_exist(path))
 490                 make_dir_hier(path);
 491         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 492         g_free(path);
 493
 494         if ((fp = fopen(filename, "rb")) == NULL) {
 495                 NNTPSession *session;
 496
 497                 session = news_session_get(folder);
 498                 if (!session) {
 499                         g_free(filename);
 500                         return NULL;
 501                 }
 502
 503                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 504                         g_free(filename);
 505                         statusbar_pop_all();
 506                         return NULL;
 507                 }
 508                 statusbar_pop_all();
 509                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 510                         log_warning(_("can't retrieve newsgroup list\n"));
 511                         session_destroy(SESSION(session));
 512                         REMOTE_FOLDER(folder)->session = NULL;
 513                         g_free(filename);
 514                         return NULL;
 515                 }
 516
 517                 if ((fp = fopen(filename, "rb")) == NULL) {
 518                         FILE_OP_ERROR(filename, "fopen");
 519                         g_free(filename);
 520                         return NULL;
 521                 }
 522         }
 523
 524         while (fgets(buf, sizeof(buf), fp) != NULL) {
 525                 gchar *p = buf;
 526                 gchar *name;
 527                 gint last_num;
 528                 gint first_num;
 529                 gchar type;
 530                 NewsGroupInfo *ginfo;
 531
 532                 p = strchr(p, ' ');
 533                 if (!p) continue;
 534                 *p = '\0';
 535                 p++;
 536                 name = buf;
 537
 538                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 539                         continue;
 540
 541                 ginfo = news_group_info_new(name, first_num, last_num, type);
 542
 543                 if (!last)
 544                         last = list = g_slist_append(NULL, ginfo);
 545                 else {
 546                         last = g_slist_append(last, ginfo);
 547                         last = last->next;
 548                 }
 549         }
 550
 551         fclose(fp);
 552         g_free(filename);
 553
 554         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 555
 556         statusbar_pop_all();
 557
 558         return list;
 559 }
 560
 561 void news_group_list_free(GSList *group_list)
 562 {
 563         GSList *cur;
 564
 565         if (!group_list) return;
 566
 567         for (cur = group_list; cur != NULL; cur = cur->next)
 568                 news_group_info_free((NewsGroupInfo *)cur->data);
 569         g_slist_free(group_list);
 570 }
 571
 572 void news_remove_group_list_cache(Folder *folder)
 573 {
 574         gchar *path, *filename;
 575
 576         g_return_if_fail(folder != NULL);
 577         g_return_if_fail(folder->type == F_NEWS);
 578
 579         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 580         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 581         g_free(path);
 582
 583         if (is_file_exist(filename)) {
 584                 if (remove(filename) < 0)
 585                         FILE_OP_ERROR(filename, "remove");
 586         }
 587         g_free(filename);
 588 }
 589
 590 gint news_post(Folder *folder, const gchar *file)
 591 {
 592         FILE *fp;
 593         gint ok;
 594
 595         g_return_val_if_fail(folder != NULL, -1);
 596         g_return_val_if_fail(folder->type == F_NEWS, -1);
 597         g_return_val_if_fail(file != NULL, -1);
 598
 599         if ((fp = fopen(file, "rb")) == NULL) {
 600                 FILE_OP_ERROR(file, "fopen");
 601                 return -1;
 602         }
 603
 604         ok = news_post_stream(folder, fp);
 605
 606         fclose(fp);
 607
 608         statusbar_pop_all();
 609
 610         return ok;
 611 }
 612
 613 gint news_post_stream(Folder *folder, FILE *fp)
 614 {
 615         NNTPSession *session;
 616         gint ok;
 617
 618         g_return_val_if_fail(folder != NULL, -1);
 619         g_return_val_if_fail(folder->type == F_NEWS, -1);
 620         g_return_val_if_fail(fp != NULL, -1);
 621
 622         session = news_session_get(folder);
 623         if (!session) return -1;
 624
 625         ok = nntp_post(session->nntp_sock, fp);
 626         if (ok != NN_SUCCESS) {
 627                 log_warning(_("can't post article.\n"));
 628                 return -1;
 629         }
 630
 631         return 0;
 632 }
 633
 634 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 635                                  gint num, gchar *filename)
 636 {
 637         gchar *msgid;
 638
 639         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 640             != NN_SUCCESS)
 641                 return -1;
 642
 643         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 644         g_free(msgid);
 645
 646         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 647                 log_warning(_("can't retrieve article %d\n"), num);
 648                 return -1;
 649         }
 650
 651         return 0;
 652 }
 653
 654 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 655 {
 656         gchar * dir;
 657         gint r;
 658
 659         dir = folder_item_get_path(item);
 660         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 661         r = remove_numbered_files(dir, num, num);
 662         g_free(dir);
 663
 664         return r;
 665 }
 666
 667 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 668 {
 669         return news_get_article_cmd(session, "ARTICLE", num, filename);
 670 }
 671
 672 /**
 673  * news_select_group:
 674  * @session: Active NNTP session.
 675  * @group: Newsgroup name.
 676  * @num: Estimated number of articles.
 677  * @first: First article number.
 678  * @last: Last article number.
 679  *
 680  * Select newsgroup @group with the GROUP command if it is not already
 681  * selected in @session, or article numbers need to be returned.
 682  *
 683  * Return value: NNTP result code.
 684  **/
 685 static gint news_select_group(NNTPSession *session, const gchar *group,
 686                               gint *num, gint *first, gint *last)
 687 {
 688         gint ok;
 689         gint num_, first_, last_;
 690
 691         if (!num || !first || !last) {
 692                 if (session->group && g_strcasecmp(session->group, group) == 0)
 693                         return NN_SUCCESS;
 694                 num = &num_;
 695                 first = &first_;
 696                 last = &last_;
 697         }
 698
 699         g_free(session->group);
 700         session->group = NULL;
 701
 702         ok = nntp_group(session->nntp_sock, group, num, first, last);
 703         if (ok == NN_SUCCESS)
 704                 session->group = g_strdup(group);
 705
 706         return ok;
 707 }
 708
 709 static GSList *news_get_uncached_articles(NNTPSession *session,
 710                                           FolderItem *item, gint cache_last,
 711                                           gint *rfirst, gint *rlast)
 712 {
 713         gint ok;
 714         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 715         gchar buf[NNTPBUFSIZE];
 716         GSList *newlist = NULL;
 717         GSList *llast = NULL;
 718         MsgInfo *msginfo;
 719
 720         if (rfirst) *rfirst = -1;
 721         if (rlast)  *rlast  = -1;
 722
 723         g_return_val_if_fail(session != NULL, NULL);
 724         g_return_val_if_fail(item != NULL, NULL);
 725         g_return_val_if_fail(item->folder != NULL, NULL);
 726         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 727
 728         ok = news_select_group(session, item->path, &num, &first, &last);
 729         if (ok != NN_SUCCESS) {
 730                 log_warning(_("can't set group: %s\n"), item->path);
 731                 return NULL;
 732         }
 733
 734         /* calculate getting overview range */
 735         if (first > last) {
 736                 log_warning(_("invalid article range: %d - %d\n"),
 737                             first, last);
 738                 return NULL;
 739         }
 740
 741         if (rfirst) *rfirst = first;
 742         if (rlast)  *rlast  = last;
 743
 744         if (cache_last < first)
 745                 begin = first;
 746         else if (last < cache_last)
 747                 begin = first;
 748         else if (last == cache_last) {
 749                 debug_print("no new articles.\n");
 750                 return NULL;
 751         } else
 752                 begin = cache_last + 1;
 753         end = last;
 754
 755         if (prefs_common.max_articles > 0 &&
 756             end - begin + 1 > prefs_common.max_articles)
 757                 begin = end - prefs_common.max_articles + 1;
 758
 759         log_message(_("getting xover %d - %d in %s...\n"),
 760                     begin, end, item->path);
 761         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 762                 log_warning(_("can't get xover\n"));
 763                 return NULL;
 764         }
 765
 766         for (;;) {
 767                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 768                         log_warning(_("error occurred while getting xover.\n"));
 769                         return newlist;
 770                 }
 771
 772                 if (buf[0] == '.' && buf[1] == '\r') break;
 773
 774                 msginfo = news_parse_xover(buf);
 775                 if (!msginfo) {
 776                         log_warning(_("invalid xover line: %s\n"), buf);
 777                         continue;
 778                 }
 779
 780                 msginfo->folder = item;
 781                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 782                 msginfo->flags.tmp_flags = MSG_NEWS;
 783                 msginfo->newsgroups = g_strdup(item->path);
 784
 785                 if (!newlist)
 786                         llast = newlist = g_slist_append(newlist, msginfo);
 787                 else {
 788                         llast = g_slist_append(llast, msginfo);
 789                         llast = llast->next;
 790                 }
 791         }
 792
 793         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 794                 log_warning(_("can't get xhdr\n"));
 795                 return newlist;
 796         }
 797
 798         llast = newlist;
 799
 800         for (;;) {
 801                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 802                         log_warning(_("error occurred while getting xhdr.\n"));
 803                         return newlist;
 804                 }
 805
 806                 if (buf[0] == '.' && buf[1] == '\r') break;
 807                 if (!llast) {
 808                         g_warning("llast == NULL\n");
 809                         continue;
 810                 }
 811
 812                 msginfo = (MsgInfo *)llast->data;
 813                 msginfo->to = news_parse_xhdr(buf, msginfo);
 814
 815                 llast = llast->next;
 816         }
 817
 818         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
 819                 log_warning(_("can't get xhdr\n"));
 820                 return newlist;
 821         }
 822
 823         llast = newlist;
 824
 825         for (;;) {
 826                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 827                         log_warning(_("error occurred while getting xhdr.\n"));
 828                         return newlist;
 829                 }
 830
 831                 if (buf[0] == '.' && buf[1] == '\r') break;
 832                 if (!llast) {
 833                         g_warning("llast == NULL\n");
 834                         continue;
 835                 }
 836
 837                 msginfo = (MsgInfo *)llast->data;
 838                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 839
 840                 llast = llast->next;
 841         }
 842
 843         return newlist;
 844 }
 845
 846 #define PARSE_ONE_PARAM(p, srcp) \
 847 { \
 848         p = strchr(srcp, '\t'); \
 849         if (!p) return NULL; \
 850         else \
 851                 *p++ = '\0'; \
 852 }
 853
 854 static MsgInfo *news_parse_xover(const gchar *xover_str)
 855 {
 856         MsgInfo *msginfo;
 857         gchar buf[NNTPBUFSIZE];
 858         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 859         gchar *p;
 860         gint num, size_int, line_int;
 861         gchar *xover_buf;
 862
 863         Xstrdup_a(xover_buf, xover_str, return NULL);
 864
 865         PARSE_ONE_PARAM(subject, xover_buf);
 866         PARSE_ONE_PARAM(sender, subject);
 867         PARSE_ONE_PARAM(date, sender);
 868         PARSE_ONE_PARAM(msgid, date);
 869         PARSE_ONE_PARAM(ref, msgid);
 870         PARSE_ONE_PARAM(size, ref);
 871         PARSE_ONE_PARAM(line, size);
 872         PARSE_ONE_PARAM(xref, line);
 873
 874         tmp = strchr(xref, '\t');
 875         if (!tmp) tmp = strchr(line, '\r');
 876         if (!tmp) tmp = strchr(line, '\n');
 877         if (tmp) *tmp = '\0';
 878
 879         num = atoi(xover_str);
 880         size_int = atoi(size);
 881         line_int = atoi(line);
 882
 883         /* set MsgInfo */
 884         msginfo = procmsg_msginfo_new();
 885         msginfo->msgnum = num;
 886         msginfo->size = size_int;
 887
 888         msginfo->date = g_strdup(date);
 889         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 890
 891         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 892         msginfo->from = g_strdup(buf);
 893         msginfo->fromname = procheader_get_fromname(buf);
 894
 895         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 896         msginfo->subject = g_strdup(buf);
 897
 898         extract_parenthesis(msgid, '<', '>');
 899         remove_space(msgid);
 900         if (*msgid != '\0')
 901                 msginfo->msgid = g_strdup(msgid);
 902
 903         msginfo->references = g_strdup(ref);
 904         eliminate_parenthesis(ref, '(', ')');
 905         if ((p = strrchr(ref, '<')) != NULL) {
 906                 extract_parenthesis(p, '<', '>');
 907                 remove_space(p);
 908                 if (*p != '\0')
 909                         msginfo->inreplyto = g_strdup(p);
 910         }
 911
 912         msginfo->xref = g_strdup(xref);
 913         p = msginfo->xref+strlen(msginfo->xref) - 1;
 914         while (*p == '\r' || *p == '\n') {
 915                 *p = '\0';
 916                 p--;
 917         }
 918
 919         return msginfo;
 920 }
 921
 922 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 923 {
 924         gchar *p;
 925         gchar *tmp;
 926         gint num;
 927
 928         p = strchr(xhdr_str, ' ');
 929         if (!p)
 930                 return NULL;
 931         else
 932                 p++;
 933
 934         num = atoi(xhdr_str);
 935         if (msginfo->msgnum != num) return NULL;
 936
 937         tmp = strchr(p, '\r');
 938         if (!tmp) tmp = strchr(p, '\n');
 939
 940         if (tmp)
 941                 return g_strndup(p, tmp - p);
 942         else
 943                 return g_strdup(p);
 944 }
 945
 946 static GSList *news_delete_old_articles(GSList *alist, FolderItem *item,
 947                                         gint first)
 948 {
 949         GSList *cur, *next;
 950         MsgInfo *msginfo;
 951         gchar *dir;
 952
 953         g_return_val_if_fail(item != NULL, alist);
 954         g_return_val_if_fail(item->folder != NULL, alist);
 955         g_return_val_if_fail(item->folder->type == F_NEWS, alist);
 956
 957         if (first < 2) return alist;
 958
 959         debug_print("Deleting cached articles 1 - %d ...\n", first - 1);
 960
 961         dir = folder_item_get_path(item);
 962         remove_numbered_files(dir, 1, first - 1);
 963         g_free(dir);
 964
 965         for (cur = alist; cur != NULL; ) {
 966                 next = cur->next;
 967
 968                 msginfo = (MsgInfo *)cur->data;
 969                 if (msginfo && msginfo->msgnum < first) {
 970                         procmsg_msginfo_free(msginfo);
 971                         alist = g_slist_remove(alist, msginfo);
 972                 }
 973
 974                 cur = next;
 975         }
 976
 977         return alist;
 978 }
 979
 980 static void news_delete_all_articles(FolderItem *item)
 981 {
 982         gchar *dir;
 983
 984         g_return_if_fail(item != NULL);
 985         g_return_if_fail(item->folder != NULL);
 986         g_return_if_fail(item->folder->type == F_NEWS);
 987
 988         debug_print("Deleting all cached articles...\n");
 989
 990         dir = folder_item_get_path(item);
 991         remove_all_numbered_files(dir);
 992         g_free(dir);
 993 }
 994
 995 static void news_delete_expired_caches(GSList *alist, FolderItem *item)
 996 {
 997         gchar *dir;
 998
 999         g_return_if_fail(item != NULL);
1000         g_return_if_fail(item->folder != NULL);
1001         g_return_if_fail(item->folder->type == F_NEWS);
1002
1003         debug_print("Deleting expired cached articles...\n");
1004
1005         dir = folder_item_get_path(item);
1006         remove_expired_files(dir, 24 * 7);
1007         g_free(dir);
1008 }
1009
1010 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
1011 {
1012         gchar * tmp;
1013         FILE * tmpfp;
1014         gchar buf[BUFFSIZE];
1015
1016         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
1017                               G_DIR_SEPARATOR, (gint)msginfo);
1018         if (tmp == NULL)
1019                 return -1;
1020
1021         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
1022                 FILE_OP_ERROR(tmp, "fopen");
1023                 return -1;
1024         }
1025         if (change_file_mode_rw(tmpfp, tmp) < 0) {
1026                 FILE_OP_ERROR(tmp, "chmod");
1027                 g_warning(_("can't change file mode\n"));
1028         }
1029
1030         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
1031         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
1032         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
1033         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
1034         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
1035         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
1036         get_rfc822_date(buf, sizeof(buf));
1037         fprintf(tmpfp, "Date: %s\r\n", buf);
1038         fprintf(tmpfp, "\r\n");
1039         fprintf(tmpfp, "removed with sylpheed\r\n");
1040
1041         fclose(tmpfp);
1042
1043         news_post(folder, tmp);
1044         remove(tmp);
1045
1046         g_free(tmp);
1047
1048         return 0;
1049 }
1050
1051 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
1052 {
1053         NNTPSession *session;
1054         gint i, ok, num, first, last, nummsgs = 0;
1055         gchar *dir;
1056
1057         g_return_val_if_fail(item != NULL, -1);
1058         g_return_val_if_fail(item->folder != NULL, -1);
1059         g_return_val_if_fail(item->folder->type == F_NEWS, -1);
1060
1061         session = news_session_get(folder);
1062         g_return_val_if_fail(session != NULL, -1);
1063
1064         ok = news_select_group(session, item->path, &num, &first, &last);
1065         if (ok != NN_SUCCESS) {
1066                 log_warning(_("can't set group: %s\n"), item->path);
1067                 return -1;
1068         }
1069
1070         if(last < first) {
1071                 log_warning(_("invalid article range: %d - %d\n"),
1072                             first, last);
1073                 return 0;
1074         }
1075
1076         for(i = first; i <= last; i++) {
1077                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
1078                 nummsgs++;
1079         }
1080
1081         dir = folder_item_get_path(item);
1082         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
1083         remove_numbered_files(dir, 1, first - 1);
1084         g_free(dir);
1085
1086         return nummsgs;
1087 }
1088
1089 #define READ_TO_LISTEND(hdr) \
1090         while (!(buf[0] == '.' && buf[1] == '\r')) { \
1091                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
1092                         log_warning(_("error occurred while getting %s.\n"), hdr); \
1093                         return msginfo; \
1094                 } \
1095         }
1096
1097 MsgInfo *news_fetch_msginfo(Folder *folder, FolderItem *item, gint num)
1098 {
1099         NNTPSession *session;
1100         MsgInfo *msginfo = NULL;
1101         gchar buf[NNTPBUFSIZE];
1102
1103         session = news_session_get(folder);
1104         g_return_val_if_fail(session != NULL, NULL);
1105         g_return_val_if_fail(item != NULL, NULL);
1106         g_return_val_if_fail(item->folder != NULL, NULL);
1107         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
1108
1109         log_message(_("getting xover %d in %s...\n"),
1110                     num, item->path);
1111         if (nntp_xover(session->nntp_sock, num, num) != NN_SUCCESS) {
1112                 log_warning(_("can't get xover\n"));
1113                 return NULL;
1114         }
1115
1116         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1117                 log_warning(_("error occurred while getting xover.\n"));
1118                 return NULL;
1119         }
1120
1121         msginfo = news_parse_xover(buf);
1122         if (!msginfo) {
1123                 log_warning(_("invalid xover line: %s\n"), buf);
1124         }
1125
1126         READ_TO_LISTEND("xover");
1127
1128         if(!msginfo)
1129                 return NULL;
1130
1131         msginfo->folder = item;
1132         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1133         msginfo->flags.tmp_flags = MSG_NEWS;
1134         msginfo->newsgroups = g_strdup(item->path);
1135
1136         if (nntp_xhdr(session->nntp_sock, "to", num, num) != NN_SUCCESS) {
1137                 log_warning(_("can't get xhdr\n"));
1138                 return msginfo;
1139         }
1140
1141         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1142                 log_warning(_("error occurred while getting xhdr.\n"));
1143                 return msginfo;
1144         }
1145
1146         msginfo->to = news_parse_xhdr(buf, msginfo);
1147
1148         READ_TO_LISTEND("xhdr (to)");
1149
1150         if (nntp_xhdr(session->nntp_sock, "cc", num, num) != NN_SUCCESS) {
1151                 log_warning(_("can't get xhdr\n"));
1152                 return msginfo;
1153         }
1154
1155         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1156                 log_warning(_("error occurred while getting xhdr.\n"));
1157                 return msginfo;
1158         }
1159
1160         msginfo->cc = news_parse_xhdr(buf, msginfo);
1161
1162         READ_TO_LISTEND("xhdr (cc)");
1163
1164         return msginfo;
1165 }
1166
1167 static GSList *news_fetch_msginfo_from_to(NNTPSession *session, FolderItem *item, guint begin, guint end)
1168 {
1169         gchar buf[NNTPBUFSIZE];
1170         GSList *newlist = NULL;
1171         GSList *llast = NULL;
1172         MsgInfo *msginfo;
1173
1174         g_return_val_if_fail(session != NULL, NULL);
1175         g_return_val_if_fail(item != NULL, NULL);
1176
1177         log_message(_("getting xover %d - %d in %s...\n"),
1178                     begin, end, item->path);
1179         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
1180                 log_warning(_("can't get xover\n"));
1181                 return NULL;
1182         }
1183
1184         for (;;) {
1185                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1186                         log_warning(_("error occurred while getting xover.\n"));
1187                         return newlist;
1188                 }
1189
1190                 if (buf[0] == '.' && buf[1] == '\r') break;
1191
1192                 msginfo = news_parse_xover(buf);
1193                 if (!msginfo) {
1194                         log_warning(_("invalid xover line: %s\n"), buf);
1195                         continue;
1196                 }
1197
1198                 msginfo->folder = item;
1199                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1200                 msginfo->flags.tmp_flags = MSG_NEWS;
1201                 msginfo->newsgroups = g_strdup(item->path);
1202
1203                 if (!newlist)
1204                         llast = newlist = g_slist_append(newlist, msginfo);
1205                 else {
1206                         llast = g_slist_append(llast, msginfo);
1207                         llast = llast->next;
1208                 }
1209         }
1210
1211         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
1212                 log_warning(_("can't get xhdr\n"));
1213                 return newlist;
1214         }
1215
1216         llast = newlist;
1217
1218         for (;;) {
1219                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1220                         log_warning(_("error occurred while getting xhdr.\n"));
1221                         return newlist;
1222                 }
1223
1224                 if (buf[0] == '.' && buf[1] == '\r') break;
1225                 if (!llast) {
1226                         g_warning("llast == NULL\n");
1227                         continue;
1228                 }
1229
1230                 msginfo = (MsgInfo *)llast->data;
1231                 msginfo->to = news_parse_xhdr(buf, msginfo);
1232
1233                 llast = llast->next;
1234         }
1235
1236         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
1237                 log_warning(_("can't get xhdr\n"));
1238                 return newlist;
1239         }
1240
1241         llast = newlist;
1242
1243         for (;;) {
1244                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1245                         log_warning(_("error occurred while getting xhdr.\n"));
1246                         return newlist;
1247                 }
1248
1249                 if (buf[0] == '.' && buf[1] == '\r') break;
1250                 if (!llast) {
1251                         g_warning("llast == NULL\n");
1252                         continue;
1253                 }
1254
1255                 msginfo = (MsgInfo *)llast->data;
1256                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1257
1258                 llast = llast->next;
1259         }
1260
1261         return newlist;
1262 }
1263
1264 gint news_fetch_msgnum_sort(gconstpointer a, gconstpointer b)
1265 {
1266         return (GPOINTER_TO_INT(a) - GPOINTER_TO_INT(b));
1267 }
1268
1269 GSList *news_fetch_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1270 {
1271         NNTPSession *session;
1272         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1273         guint first, last, next;
1274
1275         g_return_val_if_fail(folder != NULL, NULL);
1276         g_return_val_if_fail(folder->type == F_NEWS, NULL);
1277         g_return_val_if_fail(msgnum_list != NULL, NULL);
1278         g_return_val_if_fail(item != NULL, NULL);
1279
1280         session = news_session_get(folder);
1281         g_return_val_if_fail(session != NULL, NULL);
1282
1283         tmp_msgnum_list = g_slist_copy(msgnum_list);
1284         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, news_fetch_msgnum_sort);
1285
1286         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1287         last = first;
1288         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1289                 next = GPOINTER_TO_INT(elem->data);
1290                 if(next != (last + 1)) {
1291                         tmp_msginfo_list = news_fetch_msginfo_from_to(session, item, first, last);
1292                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1293                         first = next;
1294                 }
1295                 last = next;
1296         }
1297         tmp_msginfo_list = news_fetch_msginfo_from_to(session, item, first, last);
1298         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1299
1300         g_slist_free(tmp_msgnum_list);
1301
1302         return msginfo_list;
1303 }