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 #include "log.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 GSList *news_get_uncached_articles(NNTPSession   *session,
  91                                           FolderItem    *item,
  92                                           gint           cache_last,
  93                                           gint          *rfirst,
  94                                           gint          *rlast);
  95 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  96 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  97                                           MsgInfo       *msginfo);
  98 static GSList *news_delete_old_articles  (GSList        *alist,
  99                                           FolderItem    *item,
 100                                           gint           first);
 101 static void news_delete_all_articles     (FolderItem    *item);
 102 static void news_delete_expired_caches   (GSList        *alist,
 103                                           FolderItem    *item);
 104
 105 static gint news_remove_msg              (Folder        *folder,
 106                                           FolderItem    *item,
 107                                           gint           num);
 108 gint news_get_num_list                   (Folder        *folder,
 109                                           FolderItem    *item,
 110                                           GSList       **list);
 111 MsgInfo *news_get_msginfo                (Folder        *folder,
 112                                           FolderItem    *item,
 113                                           gint           num);
 114 GSList *news_get_msginfos                (Folder        *folder,
 115                                           FolderItem    *item,
 116                                           GSList        *msgnum_list);
 117
 118 gint news_post_stream                    (Folder        *folder,
 119                                           FILE          *fp);
 120
 121 Folder *news_folder_new(const gchar *name, const gchar *path)
 122 {
 123         Folder *folder;
 124
 125         folder = (Folder *)g_new0(NewsFolder, 1);
 126         news_folder_init(folder, name, path);
 127
 128         return folder;
 129 }
 130
 131 void news_folder_destroy(Folder *folder)
 132 {
 133         gchar *dir;
 134
 135         dir = folder_get_path(folder);
 136         if (is_dir_exist(dir))
 137                 remove_dir_recursive(dir);
 138         g_free(dir);
 139
 140         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 141 }
 142
 143 static void news_folder_init(Folder *folder, const gchar *name,
 144                              const gchar *path)
 145 {
 146         folder->type = F_NEWS;
 147
 148         folder_remote_folder_init(folder, name, path);
 149
 150 /*
 151         folder->get_msg_list = news_get_article_list;
 152 */
 153         folder->fetch_msg    = news_fetch_msg;
 154 /*
 155         folder->scan         = news_scan_group;
 156 */
 157         folder->destroy      = news_folder_destroy;
 158         folder->remove_msg   = news_remove_msg;
 159         folder->get_num_list = news_get_num_list;
 160         folder->get_msginfo  = news_get_msginfo;
 161         folder->get_msginfos = news_get_msginfos;
 162 }
 163
 164 #if USE_OPENSSL
 165 static Session *news_session_new(const gchar *server, gushort port,
 166                                  const gchar *userid, const gchar *passwd,
 167                                  SSLType ssl_type)
 168 #else
 169 static Session *news_session_new(const gchar *server, gushort port,
 170                                  const gchar *userid, const gchar *passwd)
 171 #endif
 172 {
 173         gchar buf[NNTPBUFSIZE];
 174         NNTPSession *session;
 175         NNTPSockInfo *nntp_sock;
 176
 177         g_return_val_if_fail(server != NULL, NULL);
 178
 179         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 180
 181 #if USE_OPENSSL
 182         if (userid && passwd)
 183                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd,
 184                                            ssl_type);
 185         else
 186                 nntp_sock = nntp_open(server, port, buf, ssl_type);
 187 #else
 188         if (userid && passwd)
 189                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
 190         else
 191                 nntp_sock = nntp_open(server, port, buf);
 192 #endif
 193
 194         if (nntp_sock == NULL)
 195                 return NULL;
 196
 197         session = g_new(NNTPSession, 1);
 198         SESSION(session)->type             = SESSION_NEWS;
 199         SESSION(session)->server           = g_strdup(server);
 200         session->nntp_sock                 = nntp_sock;
 201         SESSION(session)->sock             = nntp_sock->sock;
 202         SESSION(session)->connected        = TRUE;
 203         SESSION(session)->phase            = SESSION_READY;
 204         SESSION(session)->last_access_time = time(NULL);
 205         SESSION(session)->data             = NULL;
 206
 207         SESSION(session)->destroy          = news_session_destroy;
 208
 209         session->group = NULL;
 210
 211         return SESSION(session);
 212 }
 213
 214 void news_session_destroy(Session *session)
 215 {
 216         nntp_close(NNTP_SESSION(session)->nntp_sock);
 217         NNTP_SESSION(session)->nntp_sock = NULL;
 218         session->sock = NULL;
 219
 220         g_free(NNTP_SESSION(session)->group);
 221 }
 222
 223 static Session *news_session_new_for_folder(Folder *folder)
 224 {
 225         Session *session;
 226         PrefsAccount *ac;
 227         const gchar *userid = NULL;
 228         gchar *passwd = NULL;
 229         gushort port;
 230
 231         g_return_val_if_fail(folder != NULL, NULL);
 232         g_return_val_if_fail(folder->account != NULL, NULL);
 233
 234         ac = folder->account;
 235         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 236                 userid = ac->userid;
 237                 if (ac->passwd && ac->passwd[0])
 238                         passwd = g_strdup(ac->passwd);
 239                 else
 240                         passwd = input_dialog_query_password(ac->nntp_server,
 241                                                              userid);
 242         }
 243
 244 #if USE_OPENSSL
 245         port = ac->set_nntpport ? ac->nntpport
 246                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 247         session = news_session_new(ac->nntp_server, port, userid, passwd,
 248                                    ac->ssl_nntp);
 249 #else
 250         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 251         session = news_session_new(ac->nntp_server, port, userid, passwd);
 252 #endif
 253
 254         g_free(passwd);
 255
 256         return session;
 257 }
 258
 259 NNTPSession *news_session_get(Folder *folder)
 260 {
 261         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 262
 263         g_return_val_if_fail(folder != NULL, NULL);
 264         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 265         g_return_val_if_fail(folder->account != NULL, NULL);
 266
 267         if (!rfolder->session) {
 268                 rfolder->session = news_session_new_for_folder(folder);
 269                 statusbar_pop_all();
 270                 return NNTP_SESSION(rfolder->session);
 271         }
 272
 273         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 274                 rfolder->session->last_access_time = time(NULL);
 275                 statusbar_pop_all();
 276                 return NNTP_SESSION(rfolder->session);
 277         }
 278
 279         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 280             != NN_SUCCESS) {
 281                 log_warning("NNTP connection to %s:%d has been"
 282                               " disconnected. Reconnecting...\n",
 283                             folder->account->nntp_server,
 284                             folder->account->set_nntpport ?
 285                             folder->account->nntpport : NNTP_PORT);
 286                 session_destroy(rfolder->session);
 287                 rfolder->session = news_session_new_for_folder(folder);
 288         }
 289
 290         if (rfolder->session)
 291                 rfolder->session->last_access_time = time(NULL);
 292         statusbar_pop_all();
 293         return NNTP_SESSION(rfolder->session);
 294 }
 295
 296 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 297                               gboolean use_cache)
 298 {
 299         GSList *alist;
 300         NNTPSession *session;
 301
 302         g_return_val_if_fail(folder != NULL, NULL);
 303         g_return_val_if_fail(item != NULL, NULL);
 304         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 305
 306         session = news_session_get(folder);
 307
 308         if (!session) {
 309                 alist = procmsg_read_cache(item, FALSE);
 310                 item->last_num = procmsg_get_last_num_in_msg_list(alist);
 311         } else if (use_cache) {
 312                 GSList *newlist;
 313                 gint cache_last;
 314                 gint first, last;
 315
 316                 alist = procmsg_read_cache(item, FALSE);
 317
 318                 cache_last = procmsg_get_last_num_in_msg_list(alist);
 319                 newlist = news_get_uncached_articles
 320                         (session, item, cache_last, &first, &last);
 321                 if (first == 0 && last == 0) {
 322                         news_delete_all_articles(item);
 323                         procmsg_msg_list_free(alist);
 324                         alist = NULL;
 325                 } else {
 326                         alist = news_delete_old_articles(alist, item, first);
 327                         news_delete_expired_caches(alist, item);
 328                 }
 329
 330                 alist = g_slist_concat(alist, newlist);
 331
 332                 item->last_num = last;
 333         } else {
 334                 gint last;
 335
 336                 alist = news_get_uncached_articles
 337                         (session, item, 0, NULL, &last);
 338                 news_delete_all_articles(item);
 339                 item->last_num = last;
 340         }
 341
 342         procmsg_set_flags(alist, item);
 343
 344         statusbar_pop_all();
 345
 346         return alist;
 347 }
 348
 349 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 350 {
 351         gchar *path, *filename;
 352         NNTPSession *session;
 353         gint ok;
 354
 355         g_return_val_if_fail(folder != NULL, NULL);
 356         g_return_val_if_fail(item != NULL, NULL);
 357
 358         path = folder_item_get_path(item);
 359         if (!is_dir_exist(path))
 360                 make_dir_hier(path);
 361         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 362         g_free(path);
 363
 364         if (is_file_exist(filename)) {
 365                 debug_print("article %d has been already cached.\n", num);
 366                 return filename;
 367         }
 368
 369         session = news_session_get(folder);
 370         if (!session) {
 371                 g_free(filename);
 372                 return NULL;
 373         }
 374
 375         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 376         statusbar_pop_all();
 377         if (ok != NN_SUCCESS) {
 378                 g_warning("can't select group %s\n", item->path);
 379                 g_free(filename);
 380                 return NULL;
 381         }
 382
 383         debug_print("getting article %d...\n", num);
 384         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 385                               num, filename);
 386         statusbar_pop_all();
 387         if (ok < 0) {
 388                 g_warning("can't read article %d\n", num);
 389                 g_free(filename);
 390                 return NULL;
 391         }
 392
 393         return filename;
 394 }
 395
 396 gint news_scan_group(Folder *folder, FolderItem *item)
 397 {
 398         NNTPSession *session;
 399         gint num = 0, first = 0, last = 0;
 400         gint ok;
 401
 402         g_return_val_if_fail(folder != NULL, -1);
 403         g_return_val_if_fail(item != NULL, -1);
 404
 405         session = news_session_get(folder);
 406         if (!session) return -1;
 407
 408         ok = news_select_group(session, item->path, &num, &first, &last);
 409         if (ok != NN_SUCCESS) {
 410                 log_warning("can't set group: %s\n", item->path);
 411                 return -1;
 412         }
 413
 414         if (num == 0) {
 415                 item->new = item->unread = item->total = item->last_num = 0;
 416                 return 0;
 417         }
 418
 419 /*
 420         path = folder_item_get_path(item);
 421         if (path && is_dir_exist(path)) {
 422                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 423                                      first);
 424         }
 425         g_free(path);
 426
 427         if (max < first || last < min)
 428                 new = unread = total = num;
 429         else {
 430                 if (min < first)
 431                         min = first;
 432
 433                 if (last < max)
 434                         max = last;
 435                 else if (max < last) {
 436                         new += last - max;
 437                         unread += last - max;
 438                 }
 439
 440                 if (new > num) new = num;
 441                 if (unread > num) unread = num;
 442         }
 443
 444         item->new = new;
 445         item->unread = unread;
 446         item->total = num;
 447         item->last_num = last;
 448 */
 449         return 0;
 450 }
 451
 452 static NewsGroupInfo *news_group_info_new(const gchar *name,
 453                                           gint first, gint last, gchar type)
 454 {
 455         NewsGroupInfo *ginfo;
 456
 457         ginfo = g_new(NewsGroupInfo, 1);
 458         ginfo->name = g_strdup(name);
 459         ginfo->first = first;
 460         ginfo->last = last;
 461         ginfo->type = type;
 462
 463         return ginfo;
 464 }
 465
 466 static void news_group_info_free(NewsGroupInfo *ginfo)
 467 {
 468         g_free(ginfo->name);
 469         g_free(ginfo);
 470 }
 471
 472 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 473                                     NewsGroupInfo *ginfo2)
 474 {
 475         return g_strcasecmp(ginfo1->name, ginfo2->name);
 476 }
 477
 478 GSList *news_get_group_list(Folder *folder)
 479 {
 480         gchar *path, *filename;
 481         FILE *fp;
 482         GSList *list = NULL;
 483         GSList *last = NULL;
 484         gchar buf[NNTPBUFSIZE];
 485
 486         g_return_val_if_fail(folder != NULL, NULL);
 487         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 488
 489         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 490         if (!is_dir_exist(path))
 491                 make_dir_hier(path);
 492         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 493         g_free(path);
 494
 495         if ((fp = fopen(filename, "rb")) == NULL) {
 496                 NNTPSession *session;
 497
 498                 session = news_session_get(folder);
 499                 if (!session) {
 500                         g_free(filename);
 501                         return NULL;
 502                 }
 503
 504                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 505                         g_free(filename);
 506                         statusbar_pop_all();
 507                         return NULL;
 508                 }
 509                 statusbar_pop_all();
 510                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 511                         log_warning("can't retrieve newsgroup list\n");
 512                         session_destroy(SESSION(session));
 513                         REMOTE_FOLDER(folder)->session = NULL;
 514                         g_free(filename);
 515                         return NULL;
 516                 }
 517
 518                 if ((fp = fopen(filename, "rb")) == NULL) {
 519                         FILE_OP_ERROR(filename, "fopen");
 520                         g_free(filename);
 521                         return NULL;
 522                 }
 523         }
 524
 525         while (fgets(buf, sizeof(buf), fp) != NULL) {
 526                 gchar *p = buf;
 527                 gchar *name;
 528                 gint last_num;
 529                 gint first_num;
 530                 gchar type;
 531                 NewsGroupInfo *ginfo;
 532
 533                 p = strchr(p, ' ');
 534                 if (!p) continue;
 535                 *p = '\0';
 536                 p++;
 537                 name = buf;
 538
 539                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 540                         continue;
 541
 542                 ginfo = news_group_info_new(name, first_num, last_num, type);
 543
 544                 if (!last)
 545                         last = list = g_slist_append(NULL, ginfo);
 546                 else {
 547                         last = g_slist_append(last, ginfo);
 548                         last = last->next;
 549                 }
 550         }
 551
 552         fclose(fp);
 553         g_free(filename);
 554
 555         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 556
 557         statusbar_pop_all();
 558
 559         return list;
 560 }
 561
 562 void news_group_list_free(GSList *group_list)
 563 {
 564         GSList *cur;
 565
 566         if (!group_list) return;
 567
 568         for (cur = group_list; cur != NULL; cur = cur->next)
 569                 news_group_info_free((NewsGroupInfo *)cur->data);
 570         g_slist_free(group_list);
 571 }
 572
 573 void news_remove_group_list_cache(Folder *folder)
 574 {
 575         gchar *path, *filename;
 576
 577         g_return_if_fail(folder != NULL);
 578         g_return_if_fail(folder->type == F_NEWS);
 579
 580         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 581         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 582         g_free(path);
 583
 584         if (is_file_exist(filename)) {
 585                 if (remove(filename) < 0)
 586                         FILE_OP_ERROR(filename, "remove");
 587         }
 588         g_free(filename);
 589 }
 590
 591 gint news_post(Folder *folder, const gchar *file)
 592 {
 593         FILE *fp;
 594         gint ok;
 595
 596         g_return_val_if_fail(folder != NULL, -1);
 597         g_return_val_if_fail(folder->type == F_NEWS, -1);
 598         g_return_val_if_fail(file != NULL, -1);
 599
 600         if ((fp = fopen(file, "rb")) == NULL) {
 601                 FILE_OP_ERROR(file, "fopen");
 602                 return -1;
 603         }
 604
 605         ok = news_post_stream(folder, fp);
 606
 607         fclose(fp);
 608
 609         statusbar_pop_all();
 610
 611         return ok;
 612 }
 613
 614 gint news_post_stream(Folder *folder, FILE *fp)
 615 {
 616         NNTPSession *session;
 617         gint ok;
 618
 619         g_return_val_if_fail(folder != NULL, -1);
 620         g_return_val_if_fail(folder->type == F_NEWS, -1);
 621         g_return_val_if_fail(fp != NULL, -1);
 622
 623         session = news_session_get(folder);
 624         if (!session) return -1;
 625
 626         ok = nntp_post(session->nntp_sock, fp);
 627         if (ok != NN_SUCCESS) {
 628                 log_warning("can't post article.\n");
 629                 return -1;
 630         }
 631
 632         return 0;
 633 }
 634
 635 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 636                                  gint num, gchar *filename)
 637 {
 638         gchar *msgid;
 639
 640         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 641             != NN_SUCCESS)
 642                 return -1;
 643
 644         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 645         g_free(msgid);
 646
 647         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 648                 log_warning("can't retrieve article %d\n", num);
 649                 return -1;
 650         }
 651
 652         return 0;
 653 }
 654
 655 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 656 {
 657         gchar * dir;
 658         gint r;
 659
 660         dir = folder_item_get_path(item);
 661         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 662         r = remove_numbered_files(dir, num, num);
 663         g_free(dir);
 664
 665         return r;
 666 }
 667
 668 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 669 {
 670         return news_get_article_cmd(session, "ARTICLE", num, filename);
 671 }
 672
 673 /**
 674  * news_select_group:
 675  * @session: Active NNTP session.
 676  * @group: Newsgroup name.
 677  * @num: Estimated number of articles.
 678  * @first: First article number.
 679  * @last: Last article number.
 680  *
 681  * Select newsgroup @group with the GROUP command if it is not already
 682  * selected in @session, or article numbers need to be returned.
 683  *
 684  * Return value: NNTP result code.
 685  **/
 686 static gint news_select_group(NNTPSession *session, const gchar *group,
 687                               gint *num, gint *first, gint *last)
 688 {
 689         gint ok;
 690         gint num_, first_, last_;
 691
 692         if (!num || !first || !last) {
 693                 if (session->group && g_strcasecmp(session->group, group) == 0)
 694                         return NN_SUCCESS;
 695                 num = &num_;
 696                 first = &first_;
 697                 last = &last_;
 698         }
 699
 700         g_free(session->group);
 701         session->group = NULL;
 702
 703         ok = nntp_group(session->nntp_sock, group, num, first, last);
 704         if (ok == NN_SUCCESS)
 705                 session->group = g_strdup(group);
 706
 707         return ok;
 708 }
 709
 710 static GSList *news_get_uncached_articles(NNTPSession *session,
 711                                           FolderItem *item, gint cache_last,
 712                                           gint *rfirst, gint *rlast)
 713 {
 714         gint ok;
 715         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 716         gchar buf[NNTPBUFSIZE];
 717         GSList *newlist = NULL;
 718         GSList *llast = NULL;
 719         MsgInfo *msginfo;
 720
 721         if (rfirst) *rfirst = -1;
 722         if (rlast)  *rlast  = -1;
 723
 724         g_return_val_if_fail(session != NULL, NULL);
 725         g_return_val_if_fail(item != NULL, NULL);
 726         g_return_val_if_fail(item->folder != NULL, NULL);
 727         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 728
 729         ok = news_select_group(session, item->path, &num, &first, &last);
 730         if (ok != NN_SUCCESS) {
 731                 log_warning("can't set group: %s\n", item->path);
 732                 return NULL;
 733         }
 734
 735         /* calculate getting overview range */
 736         if (first > last) {
 737                 log_warning("invalid article range: %d - %d\n",
 738                             first, last);
 739                 return NULL;
 740         }
 741
 742         if (rfirst) *rfirst = first;
 743         if (rlast)  *rlast  = last;
 744
 745         if (cache_last < first)
 746                 begin = first;
 747         else if (last < cache_last)
 748                 begin = first;
 749         else if (last == cache_last) {
 750                 debug_print("no new articles.\n");
 751                 return NULL;
 752         } else
 753                 begin = cache_last + 1;
 754         end = last;
 755
 756         if (prefs_common.max_articles > 0 &&
 757             end - begin + 1 > prefs_common.max_articles)
 758                 begin = end - prefs_common.max_articles + 1;
 759
 760         log_message(_("getting xover %d - %d in %s...\n"),
 761                     begin, end, item->path);
 762         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 763                 log_warning("can't get xover\n");
 764                 return NULL;
 765         }
 766
 767         for (;;) {
 768                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 769                         log_warning("error occurred while getting xover.\n");
 770                         return newlist;
 771                 }
 772
 773                 if (buf[0] == '.' && buf[1] == '\r') break;
 774
 775                 msginfo = news_parse_xover(buf);
 776                 if (!msginfo) {
 777                         log_warning("invalid xover line: %s\n", buf);
 778                         continue;
 779                 }
 780
 781                 msginfo->folder = item;
 782                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 783                 msginfo->flags.tmp_flags = MSG_NEWS;
 784                 msginfo->newsgroups = g_strdup(item->path);
 785
 786                 if (!newlist)
 787                         llast = newlist = g_slist_append(newlist, msginfo);
 788                 else {
 789                         llast = g_slist_append(llast, msginfo);
 790                         llast = llast->next;
 791                 }
 792         }
 793
 794         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 795                 log_warning("can't get xhdr\n");
 796                 return newlist;
 797         }
 798
 799         llast = newlist;
 800
 801         for (;;) {
 802                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 803                         log_warning("error occurred while getting xhdr.\n");
 804                         return newlist;
 805                 }
 806
 807                 if (buf[0] == '.' && buf[1] == '\r') break;
 808                 if (!llast) {
 809                         g_warning("llast == NULL\n");
 810                         continue;
 811                 }
 812
 813                 msginfo = (MsgInfo *)llast->data;
 814                 msginfo->to = news_parse_xhdr(buf, msginfo);
 815
 816                 llast = llast->next;
 817         }
 818
 819         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
 820                 log_warning("can't get xhdr\n");
 821                 return newlist;
 822         }
 823
 824         llast = newlist;
 825
 826         for (;;) {
 827                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 828                         log_warning("error occurred while getting xhdr.\n");
 829                         return newlist;
 830                 }
 831
 832                 if (buf[0] == '.' && buf[1] == '\r') break;
 833                 if (!llast) {
 834                         g_warning("llast == NULL\n");
 835                         continue;
 836                 }
 837
 838                 msginfo = (MsgInfo *)llast->data;
 839                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 840
 841                 llast = llast->next;
 842         }
 843
 844         return newlist;
 845 }
 846
 847 #define PARSE_ONE_PARAM(p, srcp) \
 848 { \
 849         p = strchr(srcp, '\t'); \
 850         if (!p) return NULL; \
 851         else \
 852                 *p++ = '\0'; \
 853 }
 854
 855 static MsgInfo *news_parse_xover(const gchar *xover_str)
 856 {
 857         MsgInfo *msginfo;
 858         gchar buf[NNTPBUFSIZE];
 859         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 860         gchar *p;
 861         gint num, size_int, line_int;
 862         gchar *xover_buf;
 863
 864         Xstrdup_a(xover_buf, xover_str, return NULL);
 865
 866         PARSE_ONE_PARAM(subject, xover_buf);
 867         PARSE_ONE_PARAM(sender, subject);
 868         PARSE_ONE_PARAM(date, sender);
 869         PARSE_ONE_PARAM(msgid, date);
 870         PARSE_ONE_PARAM(ref, msgid);
 871         PARSE_ONE_PARAM(size, ref);
 872         PARSE_ONE_PARAM(line, size);
 873         PARSE_ONE_PARAM(xref, line);
 874
 875         tmp = strchr(xref, '\t');
 876         if (!tmp) tmp = strchr(line, '\r');
 877         if (!tmp) tmp = strchr(line, '\n');
 878         if (tmp) *tmp = '\0';
 879
 880         num = atoi(xover_str);
 881         size_int = atoi(size);
 882         line_int = atoi(line);
 883
 884         /* set MsgInfo */
 885         msginfo = procmsg_msginfo_new();
 886         msginfo->msgnum = num;
 887         msginfo->size = size_int;
 888
 889         msginfo->date = g_strdup(date);
 890         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 891
 892         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 893         msginfo->from = g_strdup(buf);
 894         msginfo->fromname = procheader_get_fromname(buf);
 895
 896         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 897         msginfo->subject = g_strdup(buf);
 898
 899         extract_parenthesis(msgid, '<', '>');
 900         remove_space(msgid);
 901         if (*msgid != '\0')
 902                 msginfo->msgid = g_strdup(msgid);
 903
 904         msginfo->references = g_strdup(ref);
 905         eliminate_parenthesis(ref, '(', ')');
 906         if ((p = strrchr(ref, '<')) != NULL) {
 907                 extract_parenthesis(p, '<', '>');
 908                 remove_space(p);
 909                 if (*p != '\0')
 910                         msginfo->inreplyto = g_strdup(p);
 911         }
 912
 913         msginfo->xref = g_strdup(xref);
 914         p = msginfo->xref+strlen(msginfo->xref) - 1;
 915         while (*p == '\r' || *p == '\n') {
 916                 *p = '\0';
 917                 p--;
 918         }
 919
 920         return msginfo;
 921 }
 922
 923 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 924 {
 925         gchar *p;
 926         gchar *tmp;
 927         gint num;
 928
 929         p = strchr(xhdr_str, ' ');
 930         if (!p)
 931                 return NULL;
 932         else
 933                 p++;
 934
 935         num = atoi(xhdr_str);
 936         if (msginfo->msgnum != num) return NULL;
 937
 938         tmp = strchr(p, '\r');
 939         if (!tmp) tmp = strchr(p, '\n');
 940
 941         if (tmp)
 942                 return g_strndup(p, tmp - p);
 943         else
 944                 return g_strdup(p);
 945 }
 946
 947 static GSList *news_delete_old_articles(GSList *alist, FolderItem *item,
 948                                         gint first)
 949 {
 950         GSList *cur, *next;
 951         MsgInfo *msginfo;
 952         gchar *dir;
 953
 954         g_return_val_if_fail(item != NULL, alist);
 955         g_return_val_if_fail(item->folder != NULL, alist);
 956         g_return_val_if_fail(item->folder->type == F_NEWS, alist);
 957
 958         if (first < 2) return alist;
 959
 960         debug_print("Deleting cached articles 1 - %d ...\n", first - 1);
 961
 962         dir = folder_item_get_path(item);
 963         remove_numbered_files(dir, 1, first - 1);
 964         g_free(dir);
 965
 966         for (cur = alist; cur != NULL; ) {
 967                 next = cur->next;
 968
 969                 msginfo = (MsgInfo *)cur->data;
 970                 if (msginfo && msginfo->msgnum < first) {
 971                         procmsg_msginfo_free(msginfo);
 972                         alist = g_slist_remove(alist, msginfo);
 973                 }
 974
 975                 cur = next;
 976         }
 977
 978         return alist;
 979 }
 980
 981 static void news_delete_all_articles(FolderItem *item)
 982 {
 983         gchar *dir;
 984
 985         g_return_if_fail(item != NULL);
 986         g_return_if_fail(item->folder != NULL);
 987         g_return_if_fail(item->folder->type == F_NEWS);
 988
 989         debug_print("Deleting all cached articles...\n");
 990
 991         dir = folder_item_get_path(item);
 992         remove_all_numbered_files(dir);
 993         g_free(dir);
 994 }
 995
 996 static void news_delete_expired_caches(GSList *alist, FolderItem *item)
 997 {
 998         gchar *dir;
 999
1000         g_return_if_fail(item != NULL);
1001         g_return_if_fail(item->folder != NULL);
1002         g_return_if_fail(item->folder->type == F_NEWS);
1003
1004         debug_print("Deleting expired cached articles...\n");
1005
1006         dir = folder_item_get_path(item);
1007         remove_expired_files(dir, 24 * 7);
1008         g_free(dir);
1009 }
1010
1011 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
1012 {
1013         gchar * tmp;
1014         FILE * tmpfp;
1015         gchar buf[BUFFSIZE];
1016
1017         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
1018                               G_DIR_SEPARATOR, (gint)msginfo);
1019         if (tmp == NULL)
1020                 return -1;
1021
1022         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
1023                 FILE_OP_ERROR(tmp, "fopen");
1024                 return -1;
1025         }
1026         if (change_file_mode_rw(tmpfp, tmp) < 0) {
1027                 FILE_OP_ERROR(tmp, "chmod");
1028                 g_warning("can't change file mode\n");
1029         }
1030
1031         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
1032         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
1033         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
1034         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
1035         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
1036         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
1037         get_rfc822_date(buf, sizeof(buf));
1038         fprintf(tmpfp, "Date: %s\r\n", buf);
1039         fprintf(tmpfp, "\r\n");
1040         fprintf(tmpfp, "removed with sylpheed\r\n");
1041
1042         fclose(tmpfp);
1043
1044         news_post(folder, tmp);
1045         remove(tmp);
1046
1047         g_free(tmp);
1048
1049         return 0;
1050 }
1051
1052 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
1053 {
1054         NNTPSession *session;
1055         gint i, ok, num, first, last, nummsgs = 0;
1056         gchar *dir;
1057
1058         g_return_val_if_fail(item != NULL, -1);
1059         g_return_val_if_fail(item->folder != NULL, -1);
1060         g_return_val_if_fail(item->folder->type == F_NEWS, -1);
1061
1062         session = news_session_get(folder);
1063         g_return_val_if_fail(session != NULL, -1);
1064
1065         ok = news_select_group(session, item->path, &num, &first, &last);
1066         if (ok != NN_SUCCESS) {
1067                 log_warning(_("can't set group: %s\n"), item->path);
1068                 return -1;
1069         }
1070
1071         if(last < first) {
1072                 log_warning(_("invalid article range: %d - %d\n"),
1073                             first, last);
1074                 return 0;
1075         }
1076
1077         for(i = first; i <= last; i++) {
1078                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
1079                 nummsgs++;
1080         }
1081
1082         dir = folder_item_get_path(item);
1083         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
1084         remove_numbered_files(dir, 1, first - 1);
1085         g_free(dir);
1086
1087         return nummsgs;
1088 }
1089
1090 #define READ_TO_LISTEND(hdr) \
1091         while (!(buf[0] == '.' && buf[1] == '\r')) { \
1092                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
1093                         log_warning(_("error occurred while getting %s.\n"), hdr); \
1094                         return msginfo; \
1095                 } \
1096         }
1097
1098 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
1099 {
1100         NNTPSession *session;
1101         MsgInfo *msginfo = NULL;
1102         gchar buf[NNTPBUFSIZE];
1103
1104         session = news_session_get(folder);
1105         g_return_val_if_fail(session != NULL, NULL);
1106         g_return_val_if_fail(item != NULL, NULL);
1107         g_return_val_if_fail(item->folder != NULL, NULL);
1108         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
1109
1110         log_message(_("getting xover %d in %s...\n"),
1111                     num, item->path);
1112         if (nntp_xover(session->nntp_sock, num, num) != NN_SUCCESS) {
1113                 log_warning(_("can't get xover\n"));
1114                 return NULL;
1115         }
1116
1117         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1118                 log_warning(_("error occurred while getting xover.\n"));
1119                 return NULL;
1120         }
1121
1122         msginfo = news_parse_xover(buf);
1123         if (!msginfo) {
1124                 log_warning(_("invalid xover line: %s\n"), buf);
1125         }
1126
1127         READ_TO_LISTEND("xover");
1128
1129         if(!msginfo)
1130                 return NULL;
1131
1132         msginfo->folder = item;
1133         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1134         msginfo->flags.tmp_flags = MSG_NEWS;
1135         msginfo->newsgroups = g_strdup(item->path);
1136
1137         if (nntp_xhdr(session->nntp_sock, "to", num, num) != NN_SUCCESS) {
1138                 log_warning(_("can't get xhdr\n"));
1139                 return msginfo;
1140         }
1141
1142         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1143                 log_warning(_("error occurred while getting xhdr.\n"));
1144                 return msginfo;
1145         }
1146
1147         msginfo->to = news_parse_xhdr(buf, msginfo);
1148
1149         READ_TO_LISTEND("xhdr (to)");
1150
1151         if (nntp_xhdr(session->nntp_sock, "cc", num, num) != NN_SUCCESS) {
1152                 log_warning(_("can't get xhdr\n"));
1153                 return msginfo;
1154         }
1155
1156         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1157                 log_warning(_("error occurred while getting xhdr.\n"));
1158                 return msginfo;
1159         }
1160
1161         msginfo->cc = news_parse_xhdr(buf, msginfo);
1162
1163         READ_TO_LISTEND("xhdr (cc)");
1164
1165         return msginfo;
1166 }
1167
1168 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
1169 {
1170         gchar buf[NNTPBUFSIZE];
1171         GSList *newlist = NULL;
1172         GSList *llast = NULL;
1173         MsgInfo *msginfo;
1174
1175         g_return_val_if_fail(session != NULL, NULL);
1176         g_return_val_if_fail(item != NULL, NULL);
1177
1178         log_message(_("getting xover %d - %d in %s...\n"),
1179                     begin, end, item->path);
1180         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
1181                 log_warning(_("can't get xover\n"));
1182                 return NULL;
1183         }
1184
1185         for (;;) {
1186                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1187                         log_warning(_("error occurred while getting xover.\n"));
1188                         return newlist;
1189                 }
1190
1191                 if (buf[0] == '.' && buf[1] == '\r') break;
1192
1193                 msginfo = news_parse_xover(buf);
1194                 if (!msginfo) {
1195                         log_warning(_("invalid xover line: %s\n"), buf);
1196                         continue;
1197                 }
1198
1199                 msginfo->folder = item;
1200                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1201                 msginfo->flags.tmp_flags = MSG_NEWS;
1202                 msginfo->newsgroups = g_strdup(item->path);
1203
1204                 if (!newlist)
1205                         llast = newlist = g_slist_append(newlist, msginfo);
1206                 else {
1207                         llast = g_slist_append(llast, msginfo);
1208                         llast = llast->next;
1209                 }
1210         }
1211
1212         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
1213                 log_warning(_("can't get xhdr\n"));
1214                 return newlist;
1215         }
1216
1217         llast = newlist;
1218
1219         for (;;) {
1220                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1221                         log_warning(_("error occurred while getting xhdr.\n"));
1222                         return newlist;
1223                 }
1224
1225                 if (buf[0] == '.' && buf[1] == '\r') break;
1226                 if (!llast) {
1227                         g_warning("llast == NULL\n");
1228                         continue;
1229                 }
1230
1231                 msginfo = (MsgInfo *)llast->data;
1232                 msginfo->to = news_parse_xhdr(buf, msginfo);
1233
1234                 llast = llast->next;
1235         }
1236
1237         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
1238                 log_warning(_("can't get xhdr\n"));
1239                 return newlist;
1240         }
1241
1242         llast = newlist;
1243
1244         for (;;) {
1245                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1246                         log_warning(_("error occurred while getting xhdr.\n"));
1247                         return newlist;
1248                 }
1249
1250                 if (buf[0] == '.' && buf[1] == '\r') break;
1251                 if (!llast) {
1252                         g_warning("llast == NULL\n");
1253                         continue;
1254                 }
1255
1256                 msginfo = (MsgInfo *)llast->data;
1257                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1258
1259                 llast = llast->next;
1260         }
1261
1262         return newlist;
1263 }
1264
1265 gint news_fetch_msgnum_sort(gconstpointer a, gconstpointer b)
1266 {
1267         return (GPOINTER_TO_INT(a) - GPOINTER_TO_INT(b));
1268 }
1269
1270 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1271 {
1272         NNTPSession *session;
1273         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1274         guint first, last, next;
1275
1276         g_return_val_if_fail(folder != NULL, NULL);
1277         g_return_val_if_fail(folder->type == F_NEWS, NULL);
1278         g_return_val_if_fail(msgnum_list != NULL, NULL);
1279         g_return_val_if_fail(item != NULL, NULL);
1280
1281         session = news_session_get(folder);
1282         g_return_val_if_fail(session != NULL, NULL);
1283
1284         tmp_msgnum_list = g_slist_copy(msgnum_list);
1285         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, news_fetch_msgnum_sort);
1286
1287         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1288         last = first;
1289         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1290                 next = GPOINTER_TO_INT(elem->data);
1291                 if(next != (last + 1)) {
1292                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1293                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1294                         first = next;
1295                 }
1296                 last = next;
1297         }
1298         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1299         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1300
1301         g_slist_free(tmp_msgnum_list);
1302
1303         return msginfo_list;
1304 }