src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2001 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
  33 #include "intl.h"
  34 #include "news.h"
  35 #include "nntp.h"
  36 #include "socket.h"
  37 #include "recv.h"
  38 #include "procmsg.h"
  39 #include "procheader.h"
  40 #include "folder.h"
  41 #include "session.h"
  42 #include "statusbar.h"
  43 #include "codeconv.h"
  44 #include "utils.h"
  45 #include "prefs_common.h"
  46 #include "prefs_account.h"
  47 #include "inputdialog.h"
  48 #include "alertpanel.h"
  49
  50 #define NNTP_PORT       119
  51
  52 static Session *news_session_new         (const gchar   *server,
  53                                           gushort        port,
  54                                           const gchar   *userid,
  55                                           const gchar   *passwd);
  56
  57 static gint news_get_article_cmd         (NNTPSession   *session,
  58                                           const gchar   *cmd,
  59                                           gint           num,
  60                                           gchar         *filename);
  61 static gint news_get_article             (NNTPSession   *session,
  62                                           gint           num,
  63                                           gchar         *filename);
  64 static gint news_get_header              (NNTPSession   *session,
  65                                           gint           num,
  66                                           gchar         *filename);
  67
  68 static gint news_select_group            (NNTPSession   *session,
  69                                           const gchar   *group);
  70 static GSList *news_get_uncached_articles(NNTPSession   *session,
  71                                           FolderItem    *item,
  72                                           gint           cache_last,
  73                                           gint          *rfirst,
  74                                           gint          *rlast);
  75 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  76 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  77                                           MsgInfo       *msginfo);
  78 static GSList *news_delete_old_articles  (GSList        *alist,
  79                                           FolderItem    *item,
  80                                           gint           first);
  81 static void news_delete_all_articles     (FolderItem    *item);
  82
  83
  84 static Session *news_session_new(const gchar *server, gushort port,
  85                                  const gchar *userid, const gchar *passwd)
  86 {
  87         gchar buf[NNTPBUFSIZE];
  88         NNTPSession *session;
  89         NNTPSockInfo *nntp_sock;
  90
  91         g_return_val_if_fail(server != NULL, NULL);
  92
  93         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
  94
  95         if (userid && passwd)
  96                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
  97         else
  98                 nntp_sock = nntp_open(server, port, buf);
  99         if (nntp_sock == NULL)
 100                 return NULL;
 101
 102         session = g_new(NNTPSession, 1);
 103         SESSION(session)->type      = SESSION_NEWS;
 104         SESSION(session)->server    = g_strdup(server);
 105         session->nntp_sock          = nntp_sock;
 106         SESSION(session)->sock      = nntp_sock->sock;
 107         SESSION(session)->connected = TRUE;
 108         SESSION(session)->phase     = SESSION_READY;
 109         SESSION(session)->data      = NULL;
 110         session->group = NULL;
 111
 112         return SESSION(session);
 113 }
 114
 115 void news_session_destroy(NNTPSession *session)
 116 {
 117         nntp_close(session->nntp_sock);
 118         session->nntp_sock = NULL;
 119         SESSION(session)->sock = NULL;
 120
 121         g_free(session->group);
 122 }
 123
 124 static gchar *news_query_password(const gchar *server, const gchar *user)
 125 {
 126         gchar *message;
 127         gchar *pass;
 128
 129         message = g_strdup_printf(_("Input password for %s on %s:"),
 130                                   user, server);
 131         pass = input_dialog_with_invisible(_("Input password"), message, NULL);
 132         g_free(message);
 133
 134         return pass;
 135 }
 136
 137 static Session *news_session_new_for_folder(Folder *folder)
 138 {
 139         Session *session;
 140         PrefsAccount *ac;
 141         const gchar *userid = NULL;
 142         gchar *passwd = NULL;
 143
 144         g_return_val_if_fail(folder != NULL, NULL);
 145         g_return_val_if_fail(folder->account != NULL, NULL);
 146
 147         ac = folder->account;
 148         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 149                 userid = ac->userid;
 150                 if (ac->passwd && ac->passwd[0])
 151                         passwd = g_strdup(ac->passwd);
 152                 else
 153                         passwd = news_query_password(ac->nntp_server, userid);
 154         }
 155
 156         session = news_session_new(ac->nntp_server,
 157                                    ac->set_nntpport ? ac->nntpport : NNTP_PORT,
 158                                    userid, passwd);
 159         g_free(passwd);
 160
 161         return session;
 162 }
 163
 164 NNTPSession *news_session_get(Folder *folder)
 165 {
 166         NNTPSession *session;
 167
 168         g_return_val_if_fail(folder != NULL, NULL);
 169         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 170         g_return_val_if_fail(folder->account != NULL, NULL);
 171
 172         if (!REMOTE_FOLDER(folder)->session) {
 173                 REMOTE_FOLDER(folder)->session =
 174                         news_session_new_for_folder(folder);
 175                 statusbar_pop_all();
 176                 return NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 177         }
 178
 179         session = NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 180
 181         if (nntp_mode(session->nntp_sock, FALSE) != NN_SUCCESS) {
 182                 log_warning(_("NNTP connection to %s:%d has been"
 183                               " disconnected. Reconnecting...\n"),
 184                             folder->account->nntp_server,
 185                             folder->account->set_nntpport ?
 186                             folder->account->nntpport : NNTP_PORT);
 187                 session_destroy(REMOTE_FOLDER(folder)->session);
 188                 REMOTE_FOLDER(folder)->session =
 189                         news_session_new_for_folder(folder);
 190         }
 191
 192         statusbar_pop_all();
 193         return NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 194 }
 195
 196 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 197                               gboolean use_cache)
 198 {
 199         GSList *alist;
 200         NNTPSession *session;
 201
 202         g_return_val_if_fail(folder != NULL, NULL);
 203         g_return_val_if_fail(item != NULL, NULL);
 204         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 205
 206         session = news_session_get(folder);
 207
 208         if (!session) {
 209                 alist = procmsg_read_cache(item, FALSE);
 210                 item->last_num = procmsg_get_last_num_in_cache(alist);
 211         } else if (use_cache) {
 212                 GSList *newlist;
 213                 gint cache_last;
 214                 gint first, last;
 215
 216                 alist = procmsg_read_cache(item, FALSE);
 217
 218                 cache_last = procmsg_get_last_num_in_cache(alist);
 219                 newlist = news_get_uncached_articles
 220                         (session, item, cache_last, &first, &last);
 221                 alist = news_delete_old_articles(alist, item, first);
 222
 223                 alist = g_slist_concat(alist, newlist);
 224                 item->last_num = last;
 225         } else {
 226                 gint last;
 227
 228                 alist = news_get_uncached_articles
 229                         (session, item, 0, NULL, &last);
 230                 news_delete_all_articles(item);
 231                 item->last_num = last;
 232         }
 233
 234         procmsg_set_flags(alist, item);
 235
 236         statusbar_pop_all();
 237
 238         return alist;
 239 }
 240
 241 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 242 {
 243         gchar *path, *filename;
 244         NNTPSession *session;
 245         gint ok;
 246
 247         g_return_val_if_fail(folder != NULL, NULL);
 248         g_return_val_if_fail(item != NULL, NULL);
 249
 250         path = folder_item_get_path(item);
 251         if (!is_dir_exist(path))
 252                 make_dir_hier(path);
 253
 254         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 255         g_free(path);
 256
 257         if (is_file_exist(filename)) {
 258                 debug_print(_("article %d has been already cached.\n"), num);
 259                 return filename;
 260         }
 261
 262         session = news_session_get(folder);
 263         if (!session) {
 264                 g_free(filename);
 265                 return NULL;
 266         }
 267
 268         ok = news_select_group(session, item->path);
 269         statusbar_pop_all();
 270         if (ok != NN_SUCCESS) {
 271                 g_warning(_("can't select group %s\n"), item->path);
 272                 g_free(filename);
 273                 return NULL;
 274         }
 275
 276         debug_print(_("getting article %d...\n"), num);
 277         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 278                               num, filename);
 279         statusbar_pop_all();
 280         if (ok < 0) {
 281                 g_warning(_("can't read article %d\n"), num);
 282                 g_free(filename);
 283                 return NULL;
 284         }
 285
 286         return filename;
 287 }
 288
 289 void news_scan_group(Folder *folder, FolderItem *item)
 290 {
 291 }
 292
 293 GSList *news_get_group_list(Folder *folder)
 294 {
 295         gchar *path, *filename;
 296         FILE *fp;
 297         GSList *list = NULL;
 298         GSList *last = NULL;
 299         gchar buf[NNTPBUFSIZE];
 300
 301         g_return_val_if_fail(folder != NULL, NULL);
 302         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 303
 304         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 305         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 306         g_free(path);
 307
 308         if ((fp = fopen(filename, "r")) == NULL) {
 309                 NNTPSession *session;
 310
 311                 session = news_session_get(folder);
 312                 if (!session) {
 313                         g_free(filename);
 314                         return NULL;
 315                 }
 316
 317                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 318                         g_free(filename);
 319                         statusbar_pop_all();
 320                         return NULL;
 321                 }
 322                 statusbar_pop_all();
 323                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 324                         log_warning(_("can't retrieve newsgroup list\n"));
 325                         g_free(filename);
 326                         return NULL;
 327                 }
 328
 329                 if ((fp = fopen(filename, "r")) == NULL) {
 330                         FILE_OP_ERROR(filename, "fopen");
 331                         g_free(filename);
 332                         return NULL;
 333                 }
 334         }
 335
 336         while (fgets(buf, sizeof(buf), fp) != NULL) {
 337                 gchar *p = buf;
 338                 while (*p != '\0' && *p != ' ') p++;
 339                 *p = '\0';
 340                 if (!last)
 341                         last = list = g_slist_append(NULL, g_strdup(buf));
 342                 else {
 343                         last = g_slist_append(last, g_strdup(buf));
 344                         last = last->next;
 345                 }
 346         }
 347
 348         fclose(fp);
 349         g_free(filename);
 350
 351         list = g_slist_sort(list, (GCompareFunc)g_strcasecmp);
 352
 353         statusbar_pop_all();
 354
 355         return list;
 356 }
 357
 358 void news_remove_group_list(Folder *folder)
 359 {
 360         gchar *path, *filename;
 361
 362         g_return_if_fail(folder != NULL);
 363         g_return_if_fail(folder->type == F_NEWS);
 364
 365         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 366         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 367         g_free(path);
 368
 369         if (is_file_exist(filename)) {
 370                 if (remove(filename) < 0)
 371                         FILE_OP_ERROR(filename, "remove");
 372         }
 373         g_free(filename);
 374 }
 375
 376 gint news_post(Folder *folder, const gchar *file)
 377 {
 378         NNTPSession *session;
 379         FILE *fp;
 380         gint ok;
 381
 382         g_return_val_if_fail(folder != NULL, -1);
 383         g_return_val_if_fail(folder->type == F_NEWS, -1);
 384         g_return_val_if_fail(file != NULL, -1);
 385
 386         session = news_session_get(folder);
 387         if (!session) return -1;
 388
 389         if ((fp = fopen(file, "r")) == NULL) {
 390                 FILE_OP_ERROR(file, "fopen");
 391                 return -1;
 392         }
 393
 394         ok = nntp_post(session->nntp_sock, fp);
 395         if (ok != NN_SUCCESS) {
 396                 log_warning(_("can't post article.\n"));
 397                 return -1;
 398         }
 399
 400         fclose(fp);
 401
 402         statusbar_pop_all();
 403
 404         return 0;
 405 }
 406
 407 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 408                                  gint num, gchar *filename)
 409 {
 410         gchar *msgid;
 411
 412         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 413             != NN_SUCCESS)
 414                 return -1;
 415
 416         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 417         g_free(msgid);
 418
 419         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 420                 log_warning(_("can't retrieve article %d\n"), num);
 421                 return -1;
 422         }
 423
 424         return 0;
 425 }
 426
 427 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 428 {
 429         return news_get_article_cmd(session, "ARTICLE", num, filename);
 430 }
 431
 432 static gint news_get_header(NNTPSession *session, gint num, gchar *filename)
 433 {
 434         return news_get_article_cmd(session, "HEAD", num, filename);
 435 }
 436
 437 /**
 438  * news_select_group:
 439  * @session: Active NNTP session.
 440  * @group: Newsgroup name.
 441  *
 442  * Select newsgroup @group with the GROUP command if it is not already
 443  * selected in @session.
 444  *
 445  * Return value: NNTP result code.
 446  **/
 447 static gint news_select_group(NNTPSession *session, const gchar *group)
 448 {
 449         gint ok;
 450         gint num, first, last;
 451
 452         if (session->group && g_strcasecmp(session->group, group) == 0)
 453                 return NN_SUCCESS;
 454
 455         g_free(session->group);
 456         session->group = NULL;
 457
 458         ok = nntp_group(session->nntp_sock, group, &num, &first, &last);
 459         if (ok == NN_SUCCESS)
 460                 session->group = g_strdup(group);
 461
 462         return ok;
 463 }
 464
 465 static GSList *news_get_uncached_articles(NNTPSession *session,
 466                                           FolderItem *item, gint cache_last,
 467                                           gint *rfirst, gint *rlast)
 468 {
 469         gint ok;
 470         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 471         gchar buf[NNTPBUFSIZE];
 472         GSList *newlist = NULL;
 473         GSList *llast = NULL;
 474         MsgInfo *msginfo;
 475
 476         if (rfirst) *rfirst = 0;
 477         if (rlast)  *rlast  = 0;
 478
 479         g_return_val_if_fail(session != NULL, NULL);
 480         g_return_val_if_fail(item != NULL, NULL);
 481         g_return_val_if_fail(item->folder != NULL, NULL);
 482         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 483
 484         g_free(session->group);
 485         session->group = NULL;
 486
 487         ok = nntp_group(session->nntp_sock, item->path,
 488                         &num, &first, &last);
 489         if (ok != NN_SUCCESS) {
 490                 log_warning(_("can't set group: %s\n"), item->path);
 491                 return NULL;
 492         }
 493         session->group = g_strdup(item->path);
 494
 495         /* calculate getting overview range */
 496         if (first > last) {
 497                 log_warning(_("invalid article range: %d - %d\n"),
 498                             first, last);
 499                 return NULL;
 500         }
 501         if (cache_last < first)
 502                 begin = first;
 503         else if (last < cache_last)
 504                 begin = first;
 505         else if (last == cache_last) {
 506                 debug_print(_("no new articles.\n"));
 507                 return NULL;
 508         } else
 509                 begin = cache_last + 1;
 510         end = last;
 511
 512         if (rfirst) *rfirst = first;
 513         if (rlast)  *rlast  = last;
 514
 515         if (prefs_common.max_articles > 0 &&
 516             end - begin + 1 > prefs_common.max_articles)
 517                 begin = end - prefs_common.max_articles + 1;
 518
 519         log_message(_("getting xover %d - %d in %s...\n"),
 520                     begin, end, item->path);
 521         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 522                 log_warning(_("can't get xover\n"));
 523                 return NULL;
 524         }
 525
 526         for (;;) {
 527                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 528                         log_warning(_("error occurred while getting xover.\n"));
 529                         return newlist;
 530                 }
 531
 532                 if (buf[0] == '.' && buf[1] == '\r') break;
 533
 534                 msginfo = news_parse_xover(buf);
 535                 if (!msginfo) {
 536                         log_warning(_("invalid xover line: %s\n"), buf);
 537                         continue;
 538                 }
 539
 540                 msginfo->folder = item;
 541                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 542                 msginfo->flags.tmp_flags = MSG_NEWS;
 543                 msginfo->newsgroups = g_strdup(item->path);
 544
 545                 if (!newlist)
 546                         llast = newlist = g_slist_append(newlist, msginfo);
 547                 else {
 548                         llast = g_slist_append(llast, msginfo);
 549                         llast = llast->next;
 550                 }
 551         }
 552
 553         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 554                 log_warning(_("can't get xhdr\n"));
 555                 return newlist;
 556         }
 557
 558         llast = newlist;
 559
 560         for (;;) {
 561                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 562                         log_warning(_("error occurred while getting xhdr.\n"));
 563                         return newlist;
 564                 }
 565
 566                 if (buf[0] == '.' && buf[1] == '\r') break;
 567                 if (!llast) {
 568                         g_warning("llast == NULL\n");
 569                         continue;
 570                 }
 571
 572                 msginfo = (MsgInfo *)llast->data;
 573                 msginfo->to = news_parse_xhdr(buf, msginfo);
 574
 575                 llast = llast->next;
 576         }
 577
 578         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
 579                 log_warning(_("can't get xhdr\n"));
 580                 return newlist;
 581         }
 582
 583         llast = newlist;
 584
 585         for (;;) {
 586                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 587                         log_warning(_("error occurred while getting xhdr.\n"));
 588                         return newlist;
 589                 }
 590
 591                 if (buf[0] == '.' && buf[1] == '\r') break;
 592                 if (!llast) {
 593                         g_warning("llast == NULL\n");
 594                         continue;
 595                 }
 596
 597                 msginfo = (MsgInfo *)llast->data;
 598                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 599
 600                 llast = llast->next;
 601         }
 602
 603         return newlist;
 604 }
 605
 606 #define PARSE_ONE_PARAM(p, srcp) \
 607 { \
 608         p = strchr(srcp, '\t'); \
 609         if (!p) return NULL; \
 610         else \
 611                 *p++ = '\0'; \
 612 }
 613
 614 static MsgInfo *news_parse_xover(const gchar *xover_str)
 615 {
 616         MsgInfo *msginfo;
 617         gchar buf[NNTPBUFSIZE];
 618         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 619         gchar *p;
 620         gint num, size_int, line_int;
 621         gchar *xover_buf;
 622
 623         Xalloca(xover_buf, strlen(xover_str) + 1, return NULL);
 624         strcpy(xover_buf, xover_str);
 625
 626         PARSE_ONE_PARAM(subject, xover_buf);
 627         PARSE_ONE_PARAM(sender, subject);
 628         PARSE_ONE_PARAM(date, sender);
 629         PARSE_ONE_PARAM(msgid, date);
 630         PARSE_ONE_PARAM(ref, msgid);
 631         PARSE_ONE_PARAM(size, ref);
 632         PARSE_ONE_PARAM(line, size);
 633
 634         tmp = strchr(line, '\t');
 635         if (!tmp) tmp = strchr(line, '\r');
 636         if (!tmp) tmp = strchr(line, '\n');
 637         if (tmp) *tmp = '\0';
 638
 639         num = atoi(xover_str);
 640         size_int = atoi(size);
 641         line_int = atoi(line);
 642
 643         /* set MsgInfo */
 644         msginfo = g_new0(MsgInfo, 1);
 645         msginfo->msgnum = num;
 646         msginfo->size = size_int;
 647
 648         msginfo->date = g_strdup(date);
 649         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 650
 651         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 652         msginfo->from = g_strdup(buf);
 653         msginfo->fromname = procheader_get_fromname(buf);
 654
 655         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 656         msginfo->subject = g_strdup(buf);
 657
 658         extract_parenthesis(msgid, '<', '>');
 659         remove_space(msgid);
 660         if (*msgid != '\0')
 661                 msginfo->msgid = g_strdup(msgid);
 662
 663         msginfo->references = g_strdup(ref);
 664         eliminate_parenthesis(ref, '(', ')');
 665         if ((p = strrchr(ref, '<')) != NULL) {
 666                 extract_parenthesis(p, '<', '>');
 667                 remove_space(p);
 668                 if (*p != '\0')
 669                         msginfo->inreplyto = g_strdup(p);
 670         }
 671
 672         return msginfo;
 673 }
 674
 675 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 676 {
 677         gchar *p;
 678         gchar *tmp;
 679         gint num;
 680
 681         p = strchr(xhdr_str, ' ');
 682         if (!p)
 683                 return NULL;
 684         else
 685                 p++;
 686
 687         num = atoi(xhdr_str);
 688         if (msginfo->msgnum != num) return NULL;
 689
 690         tmp = strchr(p, '\r');
 691         if (!tmp) tmp = strchr(p, '\n');
 692
 693         if (tmp)
 694                 return g_strndup(p, tmp - p);
 695         else
 696                 return g_strdup(p);
 697 }
 698
 699 static GSList *news_delete_old_articles(GSList *alist, FolderItem *item,
 700                                         gint first)
 701 {
 702         GSList *cur, *next;
 703         MsgInfo *msginfo;
 704         gchar *dir;
 705
 706         g_return_val_if_fail(item != NULL, alist);
 707         g_return_val_if_fail(item->folder != NULL, alist);
 708         g_return_val_if_fail(item->folder->type == F_NEWS, alist);
 709
 710         if (first < 2) return alist;
 711
 712         debug_print(_("Deleting cached articles 1 - %d ... "), first - 1);
 713
 714         dir = folder_item_get_path(item);
 715         remove_numbered_files(dir, 1, first - 1);
 716         g_free(dir);
 717
 718         for (cur = alist; cur != NULL; ) {
 719                 next = cur->next;
 720
 721                 msginfo = (MsgInfo *)cur->data;
 722                 if (msginfo && msginfo->msgnum < first) {
 723                         procmsg_msginfo_free(msginfo);
 724                         alist = g_slist_remove(alist, msginfo);
 725                 }
 726
 727                 cur = next;
 728         }
 729
 730         return alist;
 731 }
 732
 733 static void news_delete_all_articles(FolderItem *item)
 734 {
 735         gchar *dir;
 736
 737         g_return_if_fail(item != NULL);
 738         g_return_if_fail(item->folder != NULL);
 739         g_return_if_fail(item->folder->type == F_NEWS);
 740
 741         debug_print(_("\tDeleting all cached articles... "));
 742
 743         dir = folder_item_get_path(item);
 744         if (!is_dir_exist(dir))
 745                 make_dir_hier(dir);
 746         remove_all_numbered_files(dir);
 747         g_free(dir);
 748
 749         debug_print(_("done.\n"));
 750 }