src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <time.h>
  33
  34 #include "intl.h"
  35 #include "news.h"
  36 #include "nntp.h"
  37 #include "socket.h"
  38 #include "recv.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "folder.h"
  42 #include "session.h"
  43 #include "statusbar.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47 #include "prefs_account.h"
  48 #include "inputdialog.h"
  49 #include "log.h"
  50 #include "progressindicator.h"
  51 #if USE_OPENSSL
  52 #  include "ssl.h"
  53 #endif
  54
  55 #define NNTP_PORT       119
  56 #if USE_OPENSSL
  57 #define NNTPS_PORT      563
  58 #endif
  59
  60 static Folder *news_folder_new(const gchar * name, const gchar * folder);
  61 static void news_folder_destroy(Folder * folder);
  62
  63 static gchar *news_fetch_msg(Folder * folder, FolderItem * item, gint num);
  64
  65 static void news_folder_init             (Folder        *folder,
  66                                           const gchar   *name,
  67                                           const gchar   *path);
  68
  69 #if USE_OPENSSL
  70 static Session *news_session_new         (const gchar   *server,
  71                                           gushort        port,
  72                                           const gchar   *userid,
  73                                           const gchar   *passwd,
  74                                           SSLType        ssl_type);
  75 #else
  76 static Session *news_session_new         (const gchar   *server,
  77                                           gushort        port,
  78                                           const gchar   *userid,
  79                                           const gchar   *passwd);
  80 #endif
  81
  82 static gint news_get_article_cmd         (NNTPSession   *session,
  83                                           const gchar   *cmd,
  84                                           gint           num,
  85                                           gchar         *filename);
  86 static gint news_get_article             (NNTPSession   *session,
  87                                           gint           num,
  88                                           gchar         *filename);
  89
  90 static gint news_select_group            (NNTPSession   *session,
  91                                           const gchar   *group,
  92                                           gint          *num,
  93                                           gint          *first,
  94                                           gint          *last);
  95 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  96 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  97                                           MsgInfo       *msginfo);
  98 gint news_get_num_list                   (Folder        *folder,
  99                                           FolderItem    *item,
 100                                           GSList       **list);
 101 MsgInfo *news_get_msginfo                (Folder        *folder,
 102                                           FolderItem    *item,
 103                                           gint           num);
 104 GSList *news_get_msginfos                (Folder        *folder,
 105                                           FolderItem    *item,
 106                                           GSList        *msgnum_list);
 107
 108 gint news_post_stream                    (Folder        *folder,
 109                                           FILE          *fp);
 110 static gchar *news_folder_get_path       (Folder        *folder);
 111 gchar *news_item_get_path                (Folder        *folder,
 112                                           FolderItem    *item);
 113
 114 FolderClass news_class =
 115 {
 116         F_NEWS,
 117         "news",
 118         "News",
 119
 120         /* Folder functions */
 121         news_folder_new,
 122         news_folder_destroy,
 123         NULL,
 124         NULL,
 125
 126         /* FolderItem functions */
 127         NULL,
 128         NULL,
 129         news_item_get_path,
 130         NULL,
 131         NULL,
 132         NULL,
 133         news_get_num_list,
 134         NULL,
 135         NULL,
 136         NULL,
 137         NULL,
 138
 139         /* Message functions */
 140         news_get_msginfo,
 141         news_get_msginfos,
 142         news_fetch_msg,
 143         NULL,
 144         NULL,
 145         NULL,
 146         NULL,
 147         NULL,
 148         NULL,
 149 };
 150
 151 FolderClass *news_get_class(void)
 152 {
 153         return &news_class;
 154 }
 155
 156 Folder *news_folder_new(const gchar *name, const gchar *path)
 157 {
 158         Folder *folder;
 159
 160         folder = (Folder *)g_new0(NewsFolder, 1);
 161         folder->klass = &news_class;
 162         news_folder_init(folder, name, path);
 163
 164         return folder;
 165 }
 166
 167 void news_folder_destroy(Folder *folder)
 168 {
 169         gchar *dir;
 170
 171         dir = news_folder_get_path(folder);
 172         if (is_dir_exist(dir))
 173                 remove_dir_recursive(dir);
 174         g_free(dir);
 175
 176         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 177 }
 178
 179 static void news_folder_init(Folder *folder, const gchar *name,
 180                              const gchar *path)
 181 {
 182         folder_remote_folder_init(folder, name, path);
 183 }
 184
 185 #if USE_OPENSSL
 186 static Session *news_session_new(const gchar *server, gushort port,
 187                                  const gchar *userid, const gchar *passwd,
 188                                  SSLType ssl_type)
 189 #else
 190 static Session *news_session_new(const gchar *server, gushort port,
 191                                  const gchar *userid, const gchar *passwd)
 192 #endif
 193 {
 194         gchar buf[NNTPBUFSIZE];
 195         Session *session;
 196
 197         g_return_val_if_fail(server != NULL, NULL);
 198
 199         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 200
 201 #if USE_OPENSSL
 202         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 203 #else
 204         session = nntp_session_new(server, port, buf, userid, passwd);
 205 #endif
 206
 207         return session;
 208 }
 209
 210 static Session *news_session_new_for_folder(Folder *folder)
 211 {
 212         Session *session;
 213         PrefsAccount *ac;
 214         const gchar *userid = NULL;
 215         gchar *passwd = NULL;
 216         gushort port;
 217         gchar buf[NNTPBUFSIZE];
 218
 219         g_return_val_if_fail(folder != NULL, NULL);
 220         g_return_val_if_fail(folder->account != NULL, NULL);
 221
 222         ac = folder->account;
 223         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 224                 userid = ac->userid;
 225                 if (ac->passwd && ac->passwd[0])
 226                         passwd = g_strdup(ac->passwd);
 227                 else
 228                         passwd = input_dialog_query_password(ac->nntp_server,
 229                                                              userid);
 230         }
 231
 232 #if USE_OPENSSL
 233         port = ac->set_nntpport ? ac->nntpport
 234                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 235         session = news_session_new(ac->nntp_server, port, userid, passwd,
 236                                    ac->ssl_nntp);
 237 #else
 238         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 239         session = news_session_new(ac->nntp_server, port, userid, passwd);
 240 #endif
 241         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 242                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 243
 244         g_free(passwd);
 245
 246         return session;
 247 }
 248
 249 NNTPSession *news_session_get(Folder *folder)
 250 {
 251         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 252
 253         g_return_val_if_fail(folder != NULL, NULL);
 254         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 255         g_return_val_if_fail(folder->account != NULL, NULL);
 256
 257         if (!rfolder->session) {
 258                 rfolder->session = news_session_new_for_folder(folder);
 259                 return NNTP_SESSION(rfolder->session);
 260         }
 261
 262         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 263                 rfolder->session->last_access_time = time(NULL);
 264                 return NNTP_SESSION(rfolder->session);
 265         }
 266
 267         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 268             != NN_SUCCESS) {
 269                 log_warning("NNTP connection to %s:%d has been"
 270                               " disconnected. Reconnecting...\n",
 271                             folder->account->nntp_server,
 272                             folder->account->set_nntpport ?
 273                             folder->account->nntpport : NNTP_PORT);
 274                 session_destroy(rfolder->session);
 275                 rfolder->session = news_session_new_for_folder(folder);
 276         }
 277
 278         if (rfolder->session)
 279                 rfolder->session->last_access_time = time(NULL);
 280         return NNTP_SESSION(rfolder->session);
 281 }
 282
 283 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 284 {
 285         gchar *path, *filename;
 286         NNTPSession *session;
 287         gint ok;
 288
 289         g_return_val_if_fail(folder != NULL, NULL);
 290         g_return_val_if_fail(item != NULL, NULL);
 291
 292         path = folder_item_get_path(item);
 293         if (!is_dir_exist(path))
 294                 make_dir_hier(path);
 295         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 296         g_free(path);
 297
 298         if (is_file_exist(filename)) {
 299                 debug_print("article %d has been already cached.\n", num);
 300                 return filename;
 301         }
 302
 303         session = news_session_get(folder);
 304         if (!session) {
 305                 g_free(filename);
 306                 return NULL;
 307         }
 308
 309         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 310         if (ok != NN_SUCCESS) {
 311                 g_warning("can't select group %s\n", item->path);
 312                 g_free(filename);
 313                 return NULL;
 314         }
 315
 316         debug_print("getting article %d...\n", num);
 317         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 318                               num, filename);
 319         if (ok < 0) {
 320                 g_warning("can't read article %d\n", num);
 321                 session_destroy(SESSION(session));
 322                 REMOTE_FOLDER(folder)->session = NULL;
 323                 g_free(filename);
 324                 return NULL;
 325         }
 326
 327         return filename;
 328 }
 329
 330 static NewsGroupInfo *news_group_info_new(const gchar *name,
 331                                           gint first, gint last, gchar type)
 332 {
 333         NewsGroupInfo *ginfo;
 334
 335         ginfo = g_new(NewsGroupInfo, 1);
 336         ginfo->name = g_strdup(name);
 337         ginfo->first = first;
 338         ginfo->last = last;
 339         ginfo->type = type;
 340
 341         return ginfo;
 342 }
 343
 344 static void news_group_info_free(NewsGroupInfo *ginfo)
 345 {
 346         g_free(ginfo->name);
 347         g_free(ginfo);
 348 }
 349
 350 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 351                                     NewsGroupInfo *ginfo2)
 352 {
 353         return g_strcasecmp(ginfo1->name, ginfo2->name);
 354 }
 355
 356 GSList *news_get_group_list(Folder *folder)
 357 {
 358         gchar *path, *filename;
 359         FILE *fp;
 360         GSList *list = NULL;
 361         GSList *last = NULL;
 362         gchar buf[NNTPBUFSIZE];
 363
 364         g_return_val_if_fail(folder != NULL, NULL);
 365         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 366
 367         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 368         if (!is_dir_exist(path))
 369                 make_dir_hier(path);
 370         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 371         g_free(path);
 372
 373         if ((fp = fopen(filename, "rb")) == NULL) {
 374                 NNTPSession *session;
 375
 376                 session = news_session_get(folder);
 377                 if (!session) {
 378                         g_free(filename);
 379                         return NULL;
 380                 }
 381
 382                 if (nntp_list(session) != NN_SUCCESS) {
 383                         g_free(filename);
 384                         return NULL;
 385                 }
 386                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 387                         log_warning("can't retrieve newsgroup list\n");
 388                         session_destroy(SESSION(session));
 389                         REMOTE_FOLDER(folder)->session = NULL;
 390                         g_free(filename);
 391                         return NULL;
 392                 }
 393
 394                 if ((fp = fopen(filename, "rb")) == NULL) {
 395                         FILE_OP_ERROR(filename, "fopen");
 396                         g_free(filename);
 397                         return NULL;
 398                 }
 399         }
 400
 401         while (fgets(buf, sizeof(buf), fp) != NULL) {
 402                 gchar *p = buf;
 403                 gchar *name;
 404                 gint last_num;
 405                 gint first_num;
 406                 gchar type;
 407                 NewsGroupInfo *ginfo;
 408
 409                 p = strchr(p, ' ');
 410                 if (!p) continue;
 411                 *p = '\0';
 412                 p++;
 413                 name = buf;
 414
 415                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 416                         continue;
 417
 418                 ginfo = news_group_info_new(name, first_num, last_num, type);
 419
 420                 if (!last)
 421                         last = list = g_slist_append(NULL, ginfo);
 422                 else {
 423                         last = g_slist_append(last, ginfo);
 424                         last = last->next;
 425                 }
 426         }
 427
 428         fclose(fp);
 429         g_free(filename);
 430
 431         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 432
 433         return list;
 434 }
 435
 436 void news_group_list_free(GSList *group_list)
 437 {
 438         GSList *cur;
 439
 440         if (!group_list) return;
 441
 442         for (cur = group_list; cur != NULL; cur = cur->next)
 443                 news_group_info_free((NewsGroupInfo *)cur->data);
 444         g_slist_free(group_list);
 445 }
 446
 447 void news_remove_group_list_cache(Folder *folder)
 448 {
 449         gchar *path, *filename;
 450
 451         g_return_if_fail(folder != NULL);
 452         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 453
 454         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 455         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 456         g_free(path);
 457
 458         if (is_file_exist(filename)) {
 459                 if (remove(filename) < 0)
 460                         FILE_OP_ERROR(filename, "remove");
 461         }
 462         g_free(filename);
 463 }
 464
 465 gint news_post(Folder *folder, const gchar *file)
 466 {
 467         FILE *fp;
 468         gint ok;
 469
 470         g_return_val_if_fail(folder != NULL, -1);
 471         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 472         g_return_val_if_fail(file != NULL, -1);
 473
 474         if ((fp = fopen(file, "rb")) == NULL) {
 475                 FILE_OP_ERROR(file, "fopen");
 476                 return -1;
 477         }
 478
 479         ok = news_post_stream(folder, fp);
 480
 481         fclose(fp);
 482
 483         return ok;
 484 }
 485
 486 gint news_post_stream(Folder *folder, FILE *fp)
 487 {
 488         NNTPSession *session;
 489         gint ok;
 490
 491         g_return_val_if_fail(folder != NULL, -1);
 492         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 493         g_return_val_if_fail(fp != NULL, -1);
 494
 495         session = news_session_get(folder);
 496         if (!session) return -1;
 497
 498         ok = nntp_post(session, fp);
 499         if (ok != NN_SUCCESS) {
 500                 log_warning("can't post article.\n");
 501                 return -1;
 502         }
 503
 504         return 0;
 505 }
 506
 507 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 508                                  gint num, gchar *filename)
 509 {
 510         gchar *msgid;
 511
 512         if (nntp_get_article(session, cmd, num, &msgid)
 513             != NN_SUCCESS)
 514                 return -1;
 515
 516         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 517         g_free(msgid);
 518
 519         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 520                 log_warning("can't retrieve article %d\n", num);
 521                 return -1;
 522         }
 523
 524         return 0;
 525 }
 526
 527 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 528 {
 529         return news_get_article_cmd(session, "ARTICLE", num, filename);
 530 }
 531
 532 /**
 533  * news_select_group:
 534  * @session: Active NNTP session.
 535  * @group: Newsgroup name.
 536  * @num: Estimated number of articles.
 537  * @first: First article number.
 538  * @last: Last article number.
 539  *
 540  * Select newsgroup @group with the GROUP command if it is not already
 541  * selected in @session, or article numbers need to be returned.
 542  *
 543  * Return value: NNTP result code.
 544  **/
 545 static gint news_select_group(NNTPSession *session, const gchar *group,
 546                               gint *num, gint *first, gint *last)
 547 {
 548         gint ok;
 549         gint num_, first_, last_;
 550
 551         if (!num || !first || !last) {
 552                 if (session->group && g_strcasecmp(session->group, group) == 0)
 553                         return NN_SUCCESS;
 554                 num = &num_;
 555                 first = &first_;
 556                 last = &last_;
 557         }
 558
 559         g_free(session->group);
 560         session->group = NULL;
 561
 562         ok = nntp_group(session, group, num, first, last);
 563         if (ok == NN_SUCCESS)
 564                 session->group = g_strdup(group);
 565
 566         return ok;
 567 }
 568
 569 #define PARSE_ONE_PARAM(p, srcp) \
 570 { \
 571         p = strchr(srcp, '\t'); \
 572         if (!p) return NULL; \
 573         else \
 574                 *p++ = '\0'; \
 575 }
 576
 577 static MsgInfo *news_parse_xover(const gchar *xover_str)
 578 {
 579         MsgInfo *msginfo;
 580         gchar buf[NNTPBUFSIZE];
 581         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 582         gchar *p;
 583         gint num, size_int, line_int;
 584         gchar *xover_buf;
 585
 586         Xstrdup_a(xover_buf, xover_str, return NULL);
 587
 588         PARSE_ONE_PARAM(subject, xover_buf);
 589         PARSE_ONE_PARAM(sender, subject);
 590         PARSE_ONE_PARAM(date, sender);
 591         PARSE_ONE_PARAM(msgid, date);
 592         PARSE_ONE_PARAM(ref, msgid);
 593         PARSE_ONE_PARAM(size, ref);
 594         PARSE_ONE_PARAM(line, size);
 595         PARSE_ONE_PARAM(xref, line);
 596
 597         tmp = strchr(xref, '\t');
 598         if (!tmp) tmp = strchr(line, '\r');
 599         if (!tmp) tmp = strchr(line, '\n');
 600         if (tmp) *tmp = '\0';
 601
 602         num = atoi(xover_str);
 603         size_int = atoi(size);
 604         line_int = atoi(line);
 605
 606         /* set MsgInfo */
 607         msginfo = procmsg_msginfo_new();
 608         msginfo->msgnum = num;
 609         msginfo->size = size_int;
 610
 611         msginfo->date = g_strdup(date);
 612         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 613
 614         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 615         msginfo->from = g_strdup(buf);
 616         msginfo->fromname = procheader_get_fromname(buf);
 617
 618         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 619         msginfo->subject = g_strdup(buf);
 620
 621         extract_parenthesis(msgid, '<', '>');
 622         remove_space(msgid);
 623         if (*msgid != '\0')
 624                 msginfo->msgid = g_strdup(msgid);
 625
 626         msginfo->references = g_strdup(ref);
 627         eliminate_parenthesis(ref, '(', ')');
 628         if ((p = strrchr(ref, '<')) != NULL) {
 629                 extract_parenthesis(p, '<', '>');
 630                 remove_space(p);
 631                 if (*p != '\0')
 632                         msginfo->inreplyto = g_strdup(p);
 633         }
 634
 635         msginfo->xref = g_strdup(xref);
 636         p = msginfo->xref+strlen(msginfo->xref) - 1;
 637         while (*p == '\r' || *p == '\n') {
 638                 *p = '\0';
 639                 p--;
 640         }
 641
 642         return msginfo;
 643 }
 644
 645 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 646 {
 647         gchar *p;
 648         gchar *tmp;
 649         gint num;
 650
 651         p = strchr(xhdr_str, ' ');
 652         if (!p)
 653                 return NULL;
 654         else
 655                 p++;
 656
 657         num = atoi(xhdr_str);
 658         if (msginfo->msgnum != num) return NULL;
 659
 660         tmp = strchr(p, '\r');
 661         if (!tmp) tmp = strchr(p, '\n');
 662
 663         if (tmp)
 664                 return g_strndup(p, tmp - p);
 665         else
 666                 return g_strdup(p);
 667 }
 668
 669 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 670 {
 671         gchar * tmp;
 672         FILE * tmpfp;
 673         gchar buf[BUFFSIZE];
 674
 675         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 676                               G_DIR_SEPARATOR, (gint)msginfo);
 677         if (tmp == NULL)
 678                 return -1;
 679
 680         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 681                 FILE_OP_ERROR(tmp, "fopen");
 682                 return -1;
 683         }
 684         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 685                 FILE_OP_ERROR(tmp, "chmod");
 686                 g_warning("can't change file mode\n");
 687         }
 688
 689         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 690         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 691         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 692         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 693         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 694         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 695         get_rfc822_date(buf, sizeof(buf));
 696         fprintf(tmpfp, "Date: %s\r\n", buf);
 697         fprintf(tmpfp, "\r\n");
 698         fprintf(tmpfp, "removed with sylpheed\r\n");
 699
 700         fclose(tmpfp);
 701
 702         news_post(folder, tmp);
 703         remove(tmp);
 704
 705         g_free(tmp);
 706
 707         return 0;
 708 }
 709
 710 static gchar *news_folder_get_path(Folder *folder)
 711 {
 712         gchar *folder_path;
 713
 714         g_return_val_if_fail(folder->account != NULL, NULL);
 715
 716         folder_path = g_strconcat(get_news_cache_dir(),
 717                                   G_DIR_SEPARATOR_S,
 718                                   folder->account->nntp_server,
 719                                   NULL);
 720         return folder_path;
 721 }
 722
 723 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 724 {
 725         gchar *folder_path, *path;
 726
 727         g_return_val_if_fail(folder != NULL, NULL);
 728         g_return_val_if_fail(item != NULL, NULL);
 729         folder_path = news_folder_get_path(folder);
 730
 731         g_return_val_if_fail(folder_path != NULL, NULL);
 732         if (folder_path[0] == G_DIR_SEPARATOR) {
 733                 if (item->path)
 734                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 735                                            item->path, NULL);
 736                 else
 737                         path = g_strdup(folder_path);
 738         } else {
 739                 if (item->path)
 740                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 741                                            folder_path, G_DIR_SEPARATOR_S,
 742                                            item->path, NULL);
 743                 else
 744                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 745                                            folder_path, NULL);
 746         }
 747         g_free(folder_path);
 748
 749         return path;
 750 }
 751
 752 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 753 {
 754         NNTPSession *session;
 755         gint i, ok, num, first, last, nummsgs = 0;
 756         gchar *dir;
 757
 758         g_return_val_if_fail(item != NULL, -1);
 759         g_return_val_if_fail(item->folder != NULL, -1);
 760         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 761
 762         session = news_session_get(folder);
 763         g_return_val_if_fail(session != NULL, -1);
 764
 765         ok = news_select_group(session, item->path, &num, &first, &last);
 766         if (ok != NN_SUCCESS) {
 767                 log_warning(_("can't set group: %s\n"), item->path);
 768                 return -1;
 769         }
 770
 771         if(last < first) {
 772                 log_warning(_("invalid article range: %d - %d\n"),
 773                             first, last);
 774                 return 0;
 775         }
 776
 777         for(i = first; i <= last; i++) {
 778                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 779                 nummsgs++;
 780         }
 781
 782         dir = folder_item_get_path(item);
 783         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 784         remove_numbered_files(dir, 1, first - 1);
 785         g_free(dir);
 786
 787         return nummsgs;
 788 }
 789
 790 #define READ_TO_LISTEND(hdr) \
 791         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 792                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 793                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 794                         return msginfo; \
 795                 } \
 796         }
 797
 798 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 799 {
 800         NNTPSession *session;
 801         MsgInfo *msginfo = NULL;
 802         gchar buf[NNTPBUFSIZE];
 803
 804         session = news_session_get(folder);
 805         g_return_val_if_fail(session != NULL, NULL);
 806         g_return_val_if_fail(item != NULL, NULL);
 807         g_return_val_if_fail(item->folder != NULL, NULL);
 808         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 809
 810         log_message(_("getting xover %d in %s...\n"),
 811                     num, item->path);
 812         if (nntp_xover(session, num, num) != NN_SUCCESS) {
 813                 log_warning(_("can't get xover\n"));
 814                 return NULL;
 815         }
 816
 817         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 818                 log_warning(_("error occurred while getting xover.\n"));
 819                 return NULL;
 820         }
 821
 822         msginfo = news_parse_xover(buf);
 823         if (!msginfo) {
 824                 log_warning(_("invalid xover line: %s\n"), buf);
 825         }
 826
 827         READ_TO_LISTEND("xover");
 828
 829         if(!msginfo)
 830                 return NULL;
 831
 832         msginfo->folder = item;
 833         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 834         msginfo->flags.tmp_flags = MSG_NEWS;
 835         msginfo->newsgroups = g_strdup(item->path);
 836
 837         if (nntp_xhdr(session, "to", num, num) != NN_SUCCESS) {
 838                 log_warning(_("can't get xhdr\n"));
 839                 return msginfo;
 840         }
 841
 842         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 843                 log_warning(_("error occurred while getting xhdr.\n"));
 844                 return msginfo;
 845         }
 846
 847         msginfo->to = news_parse_xhdr(buf, msginfo);
 848
 849         READ_TO_LISTEND("xhdr (to)");
 850
 851         if (nntp_xhdr(session, "cc", num, num) != NN_SUCCESS) {
 852                 log_warning(_("can't get xhdr\n"));
 853                 return msginfo;
 854         }
 855
 856         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 857                 log_warning(_("error occurred while getting xhdr.\n"));
 858                 return msginfo;
 859         }
 860
 861         msginfo->cc = news_parse_xhdr(buf, msginfo);
 862
 863         READ_TO_LISTEND("xhdr (cc)");
 864
 865         return msginfo;
 866 }
 867
 868 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 869 {
 870         gchar buf[NNTPBUFSIZE];
 871         GSList *newlist = NULL;
 872         GSList *llast = NULL;
 873         MsgInfo *msginfo;
 874         guint count = 0, lines = (end - begin + 2) * 3;
 875
 876         g_return_val_if_fail(session != NULL, NULL);
 877         g_return_val_if_fail(item != NULL, NULL);
 878
 879         log_message(_("getting xover %d - %d in %s...\n"),
 880                     begin, end, item->path);
 881         if (nntp_xover(session, begin, end) != NN_SUCCESS) {
 882                 log_warning(_("can't get xover\n"));
 883                 return NULL;
 884         }
 885
 886         for (;;) {
 887                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 888                         log_warning(_("error occurred while getting xover.\n"));
 889                         return newlist;
 890                 }
 891                 count++;
 892                 progressindicator_set_percentage
 893                         (PROGRESS_TYPE_NETWORK,
 894                          session->fetch_base_percentage +
 895                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 896
 897                 if (buf[0] == '.' && buf[1] == '\r') break;
 898
 899                 msginfo = news_parse_xover(buf);
 900                 if (!msginfo) {
 901                         log_warning(_("invalid xover line: %s\n"), buf);
 902                         continue;
 903                 }
 904
 905                 msginfo->folder = item;
 906                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 907                 msginfo->flags.tmp_flags = MSG_NEWS;
 908                 msginfo->newsgroups = g_strdup(item->path);
 909
 910                 if (!newlist)
 911                         llast = newlist = g_slist_append(newlist, msginfo);
 912                 else {
 913                         llast = g_slist_append(llast, msginfo);
 914                         llast = llast->next;
 915                 }
 916         }
 917
 918         if (nntp_xhdr(session, "to", begin, end) != NN_SUCCESS) {
 919                 log_warning(_("can't get xhdr\n"));
 920                 return newlist;
 921         }
 922
 923         llast = newlist;
 924
 925         for (;;) {
 926                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 927                         log_warning(_("error occurred while getting xhdr.\n"));
 928                         return newlist;
 929                 }
 930                 count++;
 931                 progressindicator_set_percentage
 932                         (PROGRESS_TYPE_NETWORK,
 933                          session->fetch_base_percentage +
 934                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 935
 936                 if (buf[0] == '.' && buf[1] == '\r') break;
 937                 if (!llast) {
 938                         g_warning("llast == NULL\n");
 939                         continue;
 940                 }
 941
 942                 msginfo = (MsgInfo *)llast->data;
 943                 msginfo->to = news_parse_xhdr(buf, msginfo);
 944
 945                 llast = llast->next;
 946         }
 947
 948         if (nntp_xhdr(session, "cc", begin, end) != NN_SUCCESS) {
 949                 log_warning(_("can't get xhdr\n"));
 950                 return newlist;
 951         }
 952
 953         llast = newlist;
 954
 955         for (;;) {
 956                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 957                         log_warning(_("error occurred while getting xhdr.\n"));
 958                         return newlist;
 959                 }
 960                 count++;
 961                 progressindicator_set_percentage
 962                         (PROGRESS_TYPE_NETWORK,
 963                          session->fetch_base_percentage +
 964                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 965
 966                 if (buf[0] == '.' && buf[1] == '\r') break;
 967                 if (!llast) {
 968                         g_warning("llast == NULL\n");
 969                         continue;
 970                 }
 971
 972                 msginfo = (MsgInfo *)llast->data;
 973                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 974
 975                 llast = llast->next;
 976         }
 977
 978         return newlist;
 979 }
 980
 981 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
 982 {
 983         NNTPSession *session;
 984         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
 985         guint first, last, next;
 986         guint tofetch, fetched;
 987
 988         g_return_val_if_fail(folder != NULL, NULL);
 989         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 990         g_return_val_if_fail(msgnum_list != NULL, NULL);
 991         g_return_val_if_fail(item != NULL, NULL);
 992
 993         session = news_session_get(folder);
 994         g_return_val_if_fail(session != NULL, NULL);
 995
 996         tmp_msgnum_list = g_slist_copy(msgnum_list);
 997         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
 998
 999         progressindicator_start(PROGRESS_TYPE_NETWORK);
1000         tofetch = g_slist_length(tmp_msgnum_list);
1001         fetched = 0;
1002
1003         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1004         last = first;
1005         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1006                 next = GPOINTER_TO_INT(elem->data);
1007                 if(next != (last + 1)) {
1008                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1009                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1010                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1011                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1012                         fetched = last - first + 1;
1013                         first = next;
1014                 }
1015                 last = next;
1016         }
1017         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1018         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1019         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1020         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1021
1022         g_slist_free(tmp_msgnum_list);
1023
1024         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1025
1026         return msginfo_list;
1027 }