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 #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
  51 #define NNTP_PORT       119
  52
  53 static Session *news_session_new         (const gchar   *server,
  54                                           gushort        port,
  55                                           const gchar   *userid,
  56                                           const gchar   *passwd);
  57
  58 static gint news_get_article_cmd         (NNTPSession   *session,
  59                                           const gchar   *cmd,
  60                                           gint           num,
  61                                           gchar         *filename);
  62 static gint news_get_article             (NNTPSession   *session,
  63                                           gint           num,
  64                                           gchar         *filename);
  65 static gint news_get_header              (NNTPSession   *session,
  66                                           gint           num,
  67                                           gchar         *filename);
  68
  69 static gint news_select_group            (NNTPSession   *session,
  70                                           const gchar   *group);
  71 static GSList *news_get_uncached_articles(NNTPSession   *session,
  72                                           FolderItem    *item,
  73                                           gint           cache_last,
  74                                           gint          *rfirst,
  75                                           gint          *rlast);
  76 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  77 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  78                                           MsgInfo       *msginfo);
  79 static GSList *news_delete_old_articles  (GSList        *alist,
  80                                           FolderItem    *item,
  81                                           gint           first);
  82 static void news_delete_all_articles     (FolderItem    *item);
  83
  84
  85 static Session *news_session_new(const gchar *server, gushort port,
  86                                  const gchar *userid, const gchar *passwd)
  87 {
  88         gchar buf[NNTPBUFSIZE];
  89         NNTPSession *session;
  90         NNTPSockInfo *nntp_sock;
  91
  92         g_return_val_if_fail(server != NULL, NULL);
  93
  94         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
  95
  96         if (userid && passwd)
  97                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
  98         else
  99                 nntp_sock = nntp_open(server, port, buf);
 100         if (nntp_sock == NULL)
 101                 return NULL;
 102
 103         session = g_new(NNTPSession, 1);
 104         SESSION(session)->type             = SESSION_NEWS;
 105         SESSION(session)->server           = g_strdup(server);
 106         session->nntp_sock                 = nntp_sock;
 107         SESSION(session)->sock             = nntp_sock->sock;
 108         SESSION(session)->connected        = TRUE;
 109         SESSION(session)->phase            = SESSION_READY;
 110         SESSION(session)->last_access_time = time(NULL);
 111         SESSION(session)->data             = NULL;
 112         session->group = NULL;
 113
 114         return SESSION(session);
 115 }
 116
 117 void news_session_destroy(NNTPSession *session)
 118 {
 119         nntp_close(session->nntp_sock);
 120         session->nntp_sock = NULL;
 121         SESSION(session)->sock = NULL;
 122
 123         g_free(session->group);
 124 }
 125
 126 static gchar *news_query_password(const gchar *server, const gchar *user)
 127 {
 128         gchar *message;
 129         gchar *pass;
 130
 131         message = g_strdup_printf(_("Input password for %s on %s:"),
 132                                   user, server);
 133         pass = input_dialog_with_invisible(_("Input password"), message, NULL);
 134         g_free(message);
 135
 136         return pass;
 137 }
 138
 139 static Session *news_session_new_for_folder(Folder *folder)
 140 {
 141         Session *session;
 142         PrefsAccount *ac;
 143         const gchar *userid = NULL;
 144         gchar *passwd = NULL;
 145
 146         g_return_val_if_fail(folder != NULL, NULL);
 147         g_return_val_if_fail(folder->account != NULL, NULL);
 148
 149         ac = folder->account;
 150         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 151                 userid = ac->userid;
 152                 if (ac->passwd && ac->passwd[0])
 153                         passwd = g_strdup(ac->passwd);
 154                 else
 155                         passwd = news_query_password(ac->nntp_server, userid);
 156         }
 157
 158         session = news_session_new(ac->nntp_server,
 159                                    ac->set_nntpport ? ac->nntpport : NNTP_PORT,
 160                                    userid, passwd);
 161         g_free(passwd);
 162
 163         return session;
 164 }
 165
 166 NNTPSession *news_session_get(Folder *folder)
 167 {
 168         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 169
 170         g_return_val_if_fail(folder != NULL, NULL);
 171         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 172         g_return_val_if_fail(folder->account != NULL, NULL);
 173
 174         if (!rfolder->session) {
 175                 rfolder->session = news_session_new_for_folder(folder);
 176                 statusbar_pop_all();
 177                 return NNTP_SESSION(rfolder->session);
 178         }
 179
 180         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 181                 rfolder->session->last_access_time = time(NULL);
 182                 statusbar_pop_all();
 183                 return NNTP_SESSION(rfolder->session);
 184         }
 185
 186         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 187             != NN_SUCCESS) {
 188                 log_warning(_("NNTP connection to %s:%d has been"
 189                               " disconnected. Reconnecting...\n"),
 190                             folder->account->nntp_server,
 191                             folder->account->set_nntpport ?
 192                             folder->account->nntpport : NNTP_PORT);
 193                 session_destroy(rfolder->session);
 194                 rfolder->session = news_session_new_for_folder(folder);
 195         }
 196
 197         if (rfolder->session)
 198                 rfolder->session->last_access_time = time(NULL);
 199         statusbar_pop_all();
 200         return NNTP_SESSION(rfolder->session);
 201 }
 202
 203 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 204                               gboolean use_cache)
 205 {
 206         GSList *alist;
 207         NNTPSession *session;
 208
 209         g_return_val_if_fail(folder != NULL, NULL);
 210         g_return_val_if_fail(item != NULL, NULL);
 211         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 212
 213         session = news_session_get(folder);
 214
 215         if (!session) {
 216                 alist = procmsg_read_cache(item, FALSE);
 217                 item->last_num = procmsg_get_last_num_in_cache(alist);
 218         } else if (use_cache) {
 219                 GSList *newlist;
 220                 gint cache_last;
 221                 gint first, last;
 222
 223                 alist = procmsg_read_cache(item, FALSE);
 224
 225                 cache_last = procmsg_get_last_num_in_cache(alist);
 226                 newlist = news_get_uncached_articles
 227                         (session, item, cache_last, &first, &last);
 228                 alist = news_delete_old_articles(alist, item, first);
 229
 230                 alist = g_slist_concat(alist, newlist);
 231                 item->last_num = last;
 232         } else {
 233                 gint last;
 234
 235                 alist = news_get_uncached_articles
 236                         (session, item, 0, NULL, &last);
 237                 news_delete_all_articles(item);
 238                 item->last_num = last;
 239         }
 240
 241         procmsg_set_flags(alist, item);
 242
 243         statusbar_pop_all();
 244
 245         return alist;
 246 }
 247
 248 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 249 {
 250         gchar *path, *filename;
 251         NNTPSession *session;
 252         gint ok;
 253
 254         g_return_val_if_fail(folder != NULL, NULL);
 255         g_return_val_if_fail(item != NULL, NULL);
 256
 257         path = folder_item_get_path(item);
 258         if (!is_dir_exist(path))
 259                 make_dir_hier(path);
 260         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 261         g_free(path);
 262
 263         if (is_file_exist(filename)) {
 264                 debug_print(_("article %d has been already cached.\n"), num);
 265                 return filename;
 266         }
 267
 268         session = news_session_get(folder);
 269         if (!session) {
 270                 g_free(filename);
 271                 return NULL;
 272         }
 273
 274         ok = news_select_group(session, item->path);
 275         statusbar_pop_all();
 276         if (ok != NN_SUCCESS) {
 277                 g_warning(_("can't select group %s\n"), item->path);
 278                 g_free(filename);
 279                 return NULL;
 280         }
 281
 282         debug_print(_("getting article %d...\n"), num);
 283         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 284                               num, filename);
 285         statusbar_pop_all();
 286         if (ok < 0) {
 287                 g_warning(_("can't read article %d\n"), num);
 288                 g_free(filename);
 289                 return NULL;
 290         }
 291
 292         return filename;
 293 }
 294
 295 void news_scan_group(Folder *folder, FolderItem *item)
 296 {
 297 }
 298
 299 static NewsGroupInfo *news_group_info_new(const gchar *name,
 300                                           gint first, gint last, gchar type)
 301 {
 302         NewsGroupInfo *ginfo;
 303
 304         ginfo = g_new(NewsGroupInfo, 1);
 305         ginfo->name = g_strdup(name);
 306         ginfo->first = first;
 307         ginfo->last = last;
 308         ginfo->type = type;
 309
 310         return ginfo;
 311 }
 312
 313 static void news_group_info_free(NewsGroupInfo *ginfo)
 314 {
 315         g_free(ginfo->name);
 316         g_free(ginfo);
 317 }
 318
 319 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 320                                     NewsGroupInfo *ginfo2)
 321 {
 322         return g_strcasecmp(ginfo1->name, ginfo2->name);
 323 }
 324
 325 GSList *news_get_group_list(Folder *folder)
 326 {
 327         gchar *path, *filename;
 328         FILE *fp;
 329         GSList *list = NULL;
 330         GSList *last = NULL;
 331         gchar buf[NNTPBUFSIZE];
 332
 333         g_return_val_if_fail(folder != NULL, NULL);
 334         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 335
 336         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 337         if (!is_dir_exist(path))
 338                 make_dir_hier(path);
 339         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 340         g_free(path);
 341
 342         if ((fp = fopen(filename, "r")) == NULL) {
 343                 NNTPSession *session;
 344
 345                 session = news_session_get(folder);
 346                 if (!session) {
 347                         g_free(filename);
 348                         return NULL;
 349                 }
 350
 351                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 352                         g_free(filename);
 353                         statusbar_pop_all();
 354                         return NULL;
 355                 }
 356                 statusbar_pop_all();
 357                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 358                         log_warning(_("can't retrieve newsgroup list\n"));
 359                         g_free(filename);
 360                         return NULL;
 361                 }
 362
 363                 if ((fp = fopen(filename, "r")) == NULL) {
 364                         FILE_OP_ERROR(filename, "fopen");
 365                         g_free(filename);
 366                         return NULL;
 367                 }
 368         }
 369
 370         while (fgets(buf, sizeof(buf), fp) != NULL) {
 371                 gchar *p = buf;
 372                 gchar *name;
 373                 gint last_num;
 374                 gint first_num;
 375                 gchar type;
 376                 NewsGroupInfo *ginfo;
 377
 378                 p = strchr(p, ' ');
 379                 if (!p) continue;
 380                 *p = '\0';
 381                 p++;
 382                 name = buf;
 383
 384                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 385                         continue;
 386
 387                 ginfo = news_group_info_new(name, first_num, last_num, type);
 388
 389                 if (!last)
 390                         last = list = g_slist_append(NULL, ginfo);
 391                 else {
 392                         last = g_slist_append(last, ginfo);
 393                         last = last->next;
 394                 }
 395         }
 396
 397         fclose(fp);
 398         g_free(filename);
 399
 400         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 401
 402         statusbar_pop_all();
 403
 404         return list;
 405 }
 406
 407 void news_group_list_free(GSList *group_list)
 408 {
 409         GSList *cur;
 410
 411         if (!group_list) return;
 412
 413         for (cur = group_list; cur != NULL; cur = cur->next)
 414                 news_group_info_free((NewsGroupInfo *)cur->data);
 415         g_slist_free(group_list);
 416 }
 417
 418 void news_remove_group_list_cache(Folder *folder)
 419 {
 420         gchar *path, *filename;
 421
 422         g_return_if_fail(folder != NULL);
 423         g_return_if_fail(folder->type == F_NEWS);
 424
 425         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 426         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 427         g_free(path);
 428
 429         if (is_file_exist(filename)) {
 430                 if (remove(filename) < 0)
 431                         FILE_OP_ERROR(filename, "remove");
 432         }
 433         g_free(filename);
 434 }
 435
 436 gint news_post(Folder *folder, const gchar *file)
 437 {
 438         NNTPSession *session;
 439         FILE *fp;
 440         gint ok;
 441
 442         g_return_val_if_fail(folder != NULL, -1);
 443         g_return_val_if_fail(folder->type == F_NEWS, -1);
 444         g_return_val_if_fail(file != NULL, -1);
 445
 446         session = news_session_get(folder);
 447         if (!session) return -1;
 448
 449         if ((fp = fopen(file, "r")) == NULL) {
 450                 FILE_OP_ERROR(file, "fopen");
 451                 return -1;
 452         }
 453
 454         ok = nntp_post(session->nntp_sock, fp);
 455         if (ok != NN_SUCCESS) {
 456                 log_warning(_("can't post article.\n"));
 457                 return -1;
 458         }
 459
 460         fclose(fp);
 461
 462         statusbar_pop_all();
 463
 464         return 0;
 465 }
 466
 467 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 468                                  gint num, gchar *filename)
 469 {
 470         gchar *msgid;
 471
 472         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 473             != NN_SUCCESS)
 474                 return -1;
 475
 476         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 477         g_free(msgid);
 478
 479         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 480                 log_warning(_("can't retrieve article %d\n"), num);
 481                 return -1;
 482         }
 483
 484         return 0;
 485 }
 486
 487 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 488 {
 489         return news_get_article_cmd(session, "ARTICLE", num, filename);
 490 }
 491
 492 static gint news_get_header(NNTPSession *session, gint num, gchar *filename)
 493 {
 494         return news_get_article_cmd(session, "HEAD", num, filename);
 495 }
 496
 497 /**
 498  * news_select_group:
 499  * @session: Active NNTP session.
 500  * @group: Newsgroup name.
 501  *
 502  * Select newsgroup @group with the GROUP command if it is not already
 503  * selected in @session.
 504  *
 505  * Return value: NNTP result code.
 506  **/
 507 static gint news_select_group(NNTPSession *session, const gchar *group)
 508 {
 509         gint ok;
 510         gint num, first, last;
 511
 512         if (session->group && g_strcasecmp(session->group, group) == 0)
 513                 return NN_SUCCESS;
 514
 515         g_free(session->group);
 516         session->group = NULL;
 517
 518         ok = nntp_group(session->nntp_sock, group, &num, &first, &last);
 519         if (ok == NN_SUCCESS)
 520                 session->group = g_strdup(group);
 521
 522         return ok;
 523 }
 524
 525 static GSList *news_get_uncached_articles(NNTPSession *session,
 526                                           FolderItem *item, gint cache_last,
 527                                           gint *rfirst, gint *rlast)
 528 {
 529         gint ok;
 530         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 531         gchar buf[NNTPBUFSIZE];
 532         GSList *newlist = NULL;
 533         GSList *llast = NULL;
 534         MsgInfo *msginfo;
 535
 536         if (rfirst) *rfirst = 0;
 537         if (rlast)  *rlast  = 0;
 538
 539         g_return_val_if_fail(session != NULL, NULL);
 540         g_return_val_if_fail(item != NULL, NULL);
 541         g_return_val_if_fail(item->folder != NULL, NULL);
 542         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 543
 544         g_free(session->group);
 545         session->group = NULL;
 546
 547         ok = nntp_group(session->nntp_sock, item->path,
 548                         &num, &first, &last);
 549         if (ok != NN_SUCCESS) {
 550                 log_warning(_("can't set group: %s\n"), item->path);
 551                 return NULL;
 552         }
 553         session->group = g_strdup(item->path);
 554
 555         /* calculate getting overview range */
 556         if (first > last) {
 557                 log_warning(_("invalid article range: %d - %d\n"),
 558                             first, last);
 559                 return NULL;
 560         }
 561         if (cache_last < first)
 562                 begin = first;
 563         else if (last < cache_last)
 564                 begin = first;
 565         else if (last == cache_last) {
 566                 debug_print(_("no new articles.\n"));
 567                 return NULL;
 568         } else
 569                 begin = cache_last + 1;
 570         end = last;
 571
 572         if (rfirst) *rfirst = first;
 573         if (rlast)  *rlast  = last;
 574
 575         if (prefs_common.max_articles > 0 &&
 576             end - begin + 1 > prefs_common.max_articles)
 577                 begin = end - prefs_common.max_articles + 1;
 578
 579         log_message(_("getting xover %d - %d in %s...\n"),
 580                     begin, end, item->path);
 581         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 582                 log_warning(_("can't get xover\n"));
 583                 return NULL;
 584         }
 585
 586         for (;;) {
 587                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 588                         log_warning(_("error occurred while getting xover.\n"));
 589                         return newlist;
 590                 }
 591
 592                 if (buf[0] == '.' && buf[1] == '\r') break;
 593
 594                 msginfo = news_parse_xover(buf);
 595                 if (!msginfo) {
 596                         log_warning(_("invalid xover line: %s\n"), buf);
 597                         continue;
 598                 }
 599
 600                 msginfo->folder = item;
 601                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 602                 msginfo->flags.tmp_flags = MSG_NEWS;
 603                 msginfo->newsgroups = g_strdup(item->path);
 604
 605                 if (!newlist)
 606                         llast = newlist = g_slist_append(newlist, msginfo);
 607                 else {
 608                         llast = g_slist_append(llast, msginfo);
 609                         llast = llast->next;
 610                 }
 611         }
 612
 613         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 614                 log_warning(_("can't get xhdr\n"));
 615                 return newlist;
 616         }
 617
 618         llast = newlist;
 619
 620         for (;;) {
 621                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 622                         log_warning(_("error occurred while getting xhdr.\n"));
 623                         return newlist;
 624                 }
 625
 626                 if (buf[0] == '.' && buf[1] == '\r') break;
 627                 if (!llast) {
 628                         g_warning("llast == NULL\n");
 629                         continue;
 630                 }
 631
 632                 msginfo = (MsgInfo *)llast->data;
 633                 msginfo->to = news_parse_xhdr(buf, msginfo);
 634
 635                 llast = llast->next;
 636         }
 637
 638         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
 639                 log_warning(_("can't get xhdr\n"));
 640                 return newlist;
 641         }
 642
 643         llast = newlist;
 644
 645         for (;;) {
 646                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 647                         log_warning(_("error occurred while getting xhdr.\n"));
 648                         return newlist;
 649                 }
 650
 651                 if (buf[0] == '.' && buf[1] == '\r') break;
 652                 if (!llast) {
 653                         g_warning("llast == NULL\n");
 654                         continue;
 655                 }
 656
 657                 msginfo = (MsgInfo *)llast->data;
 658                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 659
 660                 llast = llast->next;
 661         }
 662
 663         return newlist;
 664 }
 665
 666 #define PARSE_ONE_PARAM(p, srcp) \
 667 { \
 668         p = strchr(srcp, '\t'); \
 669         if (!p) return NULL; \
 670         else \
 671                 *p++ = '\0'; \
 672 }
 673
 674 static MsgInfo *news_parse_xover(const gchar *xover_str)
 675 {
 676         MsgInfo *msginfo;
 677         gchar buf[NNTPBUFSIZE];
 678         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 679         gchar *p;
 680         gint num, size_int, line_int;
 681         gchar *xover_buf;
 682
 683         Xstrdup_a(xover_buf, xover_str, return NULL);
 684
 685         PARSE_ONE_PARAM(subject, xover_buf);
 686         PARSE_ONE_PARAM(sender, subject);
 687         PARSE_ONE_PARAM(date, sender);
 688         PARSE_ONE_PARAM(msgid, date);
 689         PARSE_ONE_PARAM(ref, msgid);
 690         PARSE_ONE_PARAM(size, ref);
 691         PARSE_ONE_PARAM(line, size);
 692
 693         tmp = strchr(line, '\t');
 694         if (!tmp) tmp = strchr(line, '\r');
 695         if (!tmp) tmp = strchr(line, '\n');
 696         if (tmp) *tmp = '\0';
 697
 698         num = atoi(xover_str);
 699         size_int = atoi(size);
 700         line_int = atoi(line);
 701
 702         /* set MsgInfo */
 703         msginfo = g_new0(MsgInfo, 1);
 704         msginfo->msgnum = num;
 705         msginfo->size = size_int;
 706
 707         msginfo->date = g_strdup(date);
 708         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 709
 710         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 711         msginfo->from = g_strdup(buf);
 712         msginfo->fromname = procheader_get_fromname(buf);
 713
 714         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 715         msginfo->subject = g_strdup(buf);
 716
 717         extract_parenthesis(msgid, '<', '>');
 718         remove_space(msgid);
 719         if (*msgid != '\0')
 720                 msginfo->msgid = g_strdup(msgid);
 721
 722         msginfo->references = g_strdup(ref);
 723         eliminate_parenthesis(ref, '(', ')');
 724         if ((p = strrchr(ref, '<')) != NULL) {
 725                 extract_parenthesis(p, '<', '>');
 726                 remove_space(p);
 727                 if (*p != '\0')
 728                         msginfo->inreplyto = g_strdup(p);
 729         }
 730
 731         return msginfo;
 732 }
 733
 734 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 735 {
 736         gchar *p;
 737         gchar *tmp;
 738         gint num;
 739
 740         p = strchr(xhdr_str, ' ');
 741         if (!p)
 742                 return NULL;
 743         else
 744                 p++;
 745
 746         num = atoi(xhdr_str);
 747         if (msginfo->msgnum != num) return NULL;
 748
 749         tmp = strchr(p, '\r');
 750         if (!tmp) tmp = strchr(p, '\n');
 751
 752         if (tmp)
 753                 return g_strndup(p, tmp - p);
 754         else
 755                 return g_strdup(p);
 756 }
 757
 758 static GSList *news_delete_old_articles(GSList *alist, FolderItem *item,
 759                                         gint first)
 760 {
 761         GSList *cur, *next;
 762         MsgInfo *msginfo;
 763         gchar *dir;
 764
 765         g_return_val_if_fail(item != NULL, alist);
 766         g_return_val_if_fail(item->folder != NULL, alist);
 767         g_return_val_if_fail(item->folder->type == F_NEWS, alist);
 768
 769         if (first < 2) return alist;
 770
 771         debug_print(_("Deleting cached articles 1 - %d ... "), first - 1);
 772
 773         dir = folder_item_get_path(item);
 774         remove_numbered_files(dir, 1, first - 1);
 775         g_free(dir);
 776
 777         for (cur = alist; cur != NULL; ) {
 778                 next = cur->next;
 779
 780                 msginfo = (MsgInfo *)cur->data;
 781                 if (msginfo && msginfo->msgnum < first) {
 782                         procmsg_msginfo_free(msginfo);
 783                         alist = g_slist_remove(alist, msginfo);
 784                 }
 785
 786                 cur = next;
 787         }
 788
 789         return alist;
 790 }
 791
 792 static void news_delete_all_articles(FolderItem *item)
 793 {
 794         gchar *dir;
 795
 796         g_return_if_fail(item != NULL);
 797         g_return_if_fail(item->folder != NULL);
 798         g_return_if_fail(item->folder->type == F_NEWS);
 799
 800         debug_print(_("\tDeleting all cached articles... "));
 801
 802         dir = folder_item_get_path(item);
 803         remove_all_numbered_files(dir);
 804         g_free(dir);
 805
 806         debug_print(_("done.\n"));
 807 }