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         NULL,
 150 };
 151
 152 FolderClass *news_get_class(void)
 153 {
 154         return &news_class;
 155 }
 156
 157 Folder *news_folder_new(const gchar *name, const gchar *path)
 158 {
 159         Folder *folder;
 160
 161         folder = (Folder *)g_new0(NewsFolder, 1);
 162         folder->klass = &news_class;
 163         news_folder_init(folder, name, path);
 164
 165         return folder;
 166 }
 167
 168 void news_folder_destroy(Folder *folder)
 169 {
 170         gchar *dir;
 171
 172         dir = news_folder_get_path(folder);
 173         if (is_dir_exist(dir))
 174                 remove_dir_recursive(dir);
 175         g_free(dir);
 176
 177         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 178 }
 179
 180 static void news_folder_init(Folder *folder, const gchar *name,
 181                              const gchar *path)
 182 {
 183         folder_remote_folder_init(folder, name, path);
 184 }
 185
 186 #if USE_OPENSSL
 187 static Session *news_session_new(const gchar *server, gushort port,
 188                                  const gchar *userid, const gchar *passwd,
 189                                  SSLType ssl_type)
 190 #else
 191 static Session *news_session_new(const gchar *server, gushort port,
 192                                  const gchar *userid, const gchar *passwd)
 193 #endif
 194 {
 195         gchar buf[NNTPBUFSIZE];
 196         Session *session;
 197
 198         g_return_val_if_fail(server != NULL, NULL);
 199
 200         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 201
 202 #if USE_OPENSSL
 203         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 204 #else
 205         session = nntp_session_new(server, port, buf, userid, passwd);
 206 #endif
 207
 208         return session;
 209 }
 210
 211 static Session *news_session_new_for_folder(Folder *folder)
 212 {
 213         Session *session;
 214         PrefsAccount *ac;
 215         const gchar *userid = NULL;
 216         gchar *passwd = NULL;
 217         gushort port;
 218         gchar buf[NNTPBUFSIZE];
 219
 220         g_return_val_if_fail(folder != NULL, NULL);
 221         g_return_val_if_fail(folder->account != NULL, NULL);
 222
 223         ac = folder->account;
 224         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 225                 userid = ac->userid;
 226                 if (ac->passwd && ac->passwd[0])
 227                         passwd = g_strdup(ac->passwd);
 228                 else
 229                         passwd = input_dialog_query_password(ac->nntp_server,
 230                                                              userid);
 231         }
 232
 233 #if USE_OPENSSL
 234         port = ac->set_nntpport ? ac->nntpport
 235                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 236         session = news_session_new(ac->nntp_server, port, userid, passwd,
 237                                    ac->ssl_nntp);
 238 #else
 239         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 240         session = news_session_new(ac->nntp_server, port, userid, passwd);
 241 #endif
 242         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 243                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 244
 245         g_free(passwd);
 246
 247         return session;
 248 }
 249
 250 NNTPSession *news_session_get(Folder *folder)
 251 {
 252         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 253
 254         g_return_val_if_fail(folder != NULL, NULL);
 255         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 256         g_return_val_if_fail(folder->account != NULL, NULL);
 257
 258         if (!rfolder->session) {
 259                 rfolder->session = news_session_new_for_folder(folder);
 260                 return NNTP_SESSION(rfolder->session);
 261         }
 262
 263         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 264                 rfolder->session->last_access_time = time(NULL);
 265                 return NNTP_SESSION(rfolder->session);
 266         }
 267
 268         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 269             != NN_SUCCESS) {
 270                 log_warning("NNTP connection to %s:%d has been"
 271                               " disconnected. Reconnecting...\n",
 272                             folder->account->nntp_server,
 273                             folder->account->set_nntpport ?
 274                             folder->account->nntpport : NNTP_PORT);
 275                 session_destroy(rfolder->session);
 276                 rfolder->session = news_session_new_for_folder(folder);
 277         }
 278
 279         if (rfolder->session)
 280                 rfolder->session->last_access_time = time(NULL);
 281         return NNTP_SESSION(rfolder->session);
 282 }
 283
 284 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 285 {
 286         gchar *path, *filename;
 287         NNTPSession *session;
 288         gint ok;
 289
 290         g_return_val_if_fail(folder != NULL, NULL);
 291         g_return_val_if_fail(item != NULL, NULL);
 292
 293         path = folder_item_get_path(item);
 294         if (!is_dir_exist(path))
 295                 make_dir_hier(path);
 296         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 297         g_free(path);
 298
 299         if (is_file_exist(filename)) {
 300                 debug_print("article %d has been already cached.\n", num);
 301                 return filename;
 302         }
 303
 304         session = news_session_get(folder);
 305         if (!session) {
 306                 g_free(filename);
 307                 return NULL;
 308         }
 309
 310         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 311         if (ok != NN_SUCCESS) {
 312                 g_warning("can't select group %s\n", item->path);
 313                 g_free(filename);
 314                 return NULL;
 315         }
 316
 317         debug_print("getting article %d...\n", num);
 318         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 319                               num, filename);
 320         if (ok < 0) {
 321                 g_warning("can't read article %d\n", num);
 322                 session_destroy(SESSION(session));
 323                 REMOTE_FOLDER(folder)->session = NULL;
 324                 g_free(filename);
 325                 return NULL;
 326         }
 327
 328         return filename;
 329 }
 330
 331 static NewsGroupInfo *news_group_info_new(const gchar *name,
 332                                           gint first, gint last, gchar type)
 333 {
 334         NewsGroupInfo *ginfo;
 335
 336         ginfo = g_new(NewsGroupInfo, 1);
 337         ginfo->name = g_strdup(name);
 338         ginfo->first = first;
 339         ginfo->last = last;
 340         ginfo->type = type;
 341
 342         return ginfo;
 343 }
 344
 345 static void news_group_info_free(NewsGroupInfo *ginfo)
 346 {
 347         g_free(ginfo->name);
 348         g_free(ginfo);
 349 }
 350
 351 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 352                                     NewsGroupInfo *ginfo2)
 353 {
 354         return g_strcasecmp(ginfo1->name, ginfo2->name);
 355 }
 356
 357 GSList *news_get_group_list(Folder *folder)
 358 {
 359         gchar *path, *filename;
 360         FILE *fp;
 361         GSList *list = NULL;
 362         GSList *last = NULL;
 363         gchar buf[NNTPBUFSIZE];
 364
 365         g_return_val_if_fail(folder != NULL, NULL);
 366         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 367
 368         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 369         if (!is_dir_exist(path))
 370                 make_dir_hier(path);
 371         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 372         g_free(path);
 373
 374         if ((fp = fopen(filename, "rb")) == NULL) {
 375                 NNTPSession *session;
 376
 377                 session = news_session_get(folder);
 378                 if (!session) {
 379                         g_free(filename);
 380                         return NULL;
 381                 }
 382
 383                 if (nntp_list(session) != NN_SUCCESS) {
 384                         g_free(filename);
 385                         return NULL;
 386                 }
 387                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 388                         log_warning("can't retrieve newsgroup list\n");
 389                         session_destroy(SESSION(session));
 390                         REMOTE_FOLDER(folder)->session = NULL;
 391                         g_free(filename);
 392                         return NULL;
 393                 }
 394
 395                 if ((fp = fopen(filename, "rb")) == NULL) {
 396                         FILE_OP_ERROR(filename, "fopen");
 397                         g_free(filename);
 398                         return NULL;
 399                 }
 400         }
 401
 402         while (fgets(buf, sizeof(buf), fp) != NULL) {
 403                 gchar *p = buf;
 404                 gchar *name;
 405                 gint last_num;
 406                 gint first_num;
 407                 gchar type;
 408                 NewsGroupInfo *ginfo;
 409
 410                 p = strchr(p, ' ');
 411                 if (!p) continue;
 412                 *p = '\0';
 413                 p++;
 414                 name = buf;
 415
 416                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 417                         continue;
 418
 419                 ginfo = news_group_info_new(name, first_num, last_num, type);
 420
 421                 if (!last)
 422                         last = list = g_slist_append(NULL, ginfo);
 423                 else {
 424                         last = g_slist_append(last, ginfo);
 425                         last = last->next;
 426                 }
 427         }
 428
 429         fclose(fp);
 430         g_free(filename);
 431
 432         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 433
 434         return list;
 435 }
 436
 437 void news_group_list_free(GSList *group_list)
 438 {
 439         GSList *cur;
 440
 441         if (!group_list) return;
 442
 443         for (cur = group_list; cur != NULL; cur = cur->next)
 444                 news_group_info_free((NewsGroupInfo *)cur->data);
 445         g_slist_free(group_list);
 446 }
 447
 448 void news_remove_group_list_cache(Folder *folder)
 449 {
 450         gchar *path, *filename;
 451
 452         g_return_if_fail(folder != NULL);
 453         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 454
 455         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 456         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 457         g_free(path);
 458
 459         if (is_file_exist(filename)) {
 460                 if (remove(filename) < 0)
 461                         FILE_OP_ERROR(filename, "remove");
 462         }
 463         g_free(filename);
 464 }
 465
 466 gint news_post(Folder *folder, const gchar *file)
 467 {
 468         FILE *fp;
 469         gint ok;
 470
 471         g_return_val_if_fail(folder != NULL, -1);
 472         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 473         g_return_val_if_fail(file != NULL, -1);
 474
 475         if ((fp = fopen(file, "rb")) == NULL) {
 476                 FILE_OP_ERROR(file, "fopen");
 477                 return -1;
 478         }
 479
 480         ok = news_post_stream(folder, fp);
 481
 482         fclose(fp);
 483
 484         return ok;
 485 }
 486
 487 gint news_post_stream(Folder *folder, FILE *fp)
 488 {
 489         NNTPSession *session;
 490         gint ok;
 491
 492         g_return_val_if_fail(folder != NULL, -1);
 493         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 494         g_return_val_if_fail(fp != NULL, -1);
 495
 496         session = news_session_get(folder);
 497         if (!session) return -1;
 498
 499         ok = nntp_post(session, fp);
 500         if (ok != NN_SUCCESS) {
 501                 log_warning("can't post article.\n");
 502                 return -1;
 503         }
 504
 505         return 0;
 506 }
 507
 508 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 509                                  gint num, gchar *filename)
 510 {
 511         gchar *msgid;
 512
 513         if (nntp_get_article(session, cmd, num, &msgid)
 514             != NN_SUCCESS)
 515                 return -1;
 516
 517         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 518         g_free(msgid);
 519
 520         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 521                 log_warning("can't retrieve article %d\n", num);
 522                 return -1;
 523         }
 524
 525         return 0;
 526 }
 527
 528 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 529 {
 530         return news_get_article_cmd(session, "ARTICLE", num, filename);
 531 }
 532
 533 /**
 534  * news_select_group:
 535  * @session: Active NNTP session.
 536  * @group: Newsgroup name.
 537  * @num: Estimated number of articles.
 538  * @first: First article number.
 539  * @last: Last article number.
 540  *
 541  * Select newsgroup @group with the GROUP command if it is not already
 542  * selected in @session, or article numbers need to be returned.
 543  *
 544  * Return value: NNTP result code.
 545  **/
 546 static gint news_select_group(NNTPSession *session, const gchar *group,
 547                               gint *num, gint *first, gint *last)
 548 {
 549         gint ok;
 550         gint num_, first_, last_;
 551
 552         if (!num || !first || !last) {
 553                 if (session->group && g_strcasecmp(session->group, group) == 0)
 554                         return NN_SUCCESS;
 555                 num = &num_;
 556                 first = &first_;
 557                 last = &last_;
 558         }
 559
 560         g_free(session->group);
 561         session->group = NULL;
 562
 563         ok = nntp_group(session, group, num, first, last);
 564         if (ok == NN_SUCCESS)
 565                 session->group = g_strdup(group);
 566
 567         return ok;
 568 }
 569
 570 #define PARSE_ONE_PARAM(p, srcp) \
 571 { \
 572         p = strchr(srcp, '\t'); \
 573         if (!p) return NULL; \
 574         else \
 575                 *p++ = '\0'; \
 576 }
 577
 578 static MsgInfo *news_parse_xover(const gchar *xover_str)
 579 {
 580         MsgInfo *msginfo;
 581         gchar buf[NNTPBUFSIZE];
 582         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 583         gchar *p;
 584         gint num, size_int, line_int;
 585         gchar *xover_buf;
 586
 587         Xstrdup_a(xover_buf, xover_str, return NULL);
 588
 589         PARSE_ONE_PARAM(subject, xover_buf);
 590         PARSE_ONE_PARAM(sender, subject);
 591         PARSE_ONE_PARAM(date, sender);
 592         PARSE_ONE_PARAM(msgid, date);
 593         PARSE_ONE_PARAM(ref, msgid);
 594         PARSE_ONE_PARAM(size, ref);
 595         PARSE_ONE_PARAM(line, size);
 596         PARSE_ONE_PARAM(xref, line);
 597
 598         tmp = strchr(xref, '\t');
 599         if (!tmp) tmp = strchr(line, '\r');
 600         if (!tmp) tmp = strchr(line, '\n');
 601         if (tmp) *tmp = '\0';
 602
 603         num = atoi(xover_str);
 604         size_int = atoi(size);
 605         line_int = atoi(line);
 606
 607         /* set MsgInfo */
 608         msginfo = procmsg_msginfo_new();
 609         msginfo->msgnum = num;
 610         msginfo->size = size_int;
 611
 612         msginfo->date = g_strdup(date);
 613         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 614
 615         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 616         msginfo->from = g_strdup(buf);
 617         msginfo->fromname = procheader_get_fromname(buf);
 618
 619         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 620         msginfo->subject = g_strdup(buf);
 621
 622         extract_parenthesis(msgid, '<', '>');
 623         remove_space(msgid);
 624         if (*msgid != '\0')
 625                 msginfo->msgid = g_strdup(msgid);
 626
 627         msginfo->references = g_strdup(ref);
 628         eliminate_parenthesis(ref, '(', ')');
 629         if ((p = strrchr(ref, '<')) != NULL) {
 630                 extract_parenthesis(p, '<', '>');
 631                 remove_space(p);
 632                 if (*p != '\0')
 633                         msginfo->inreplyto = g_strdup(p);
 634         }
 635
 636         msginfo->xref = g_strdup(xref);
 637         p = msginfo->xref+strlen(msginfo->xref) - 1;
 638         while (*p == '\r' || *p == '\n') {
 639                 *p = '\0';
 640                 p--;
 641         }
 642
 643         return msginfo;
 644 }
 645
 646 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 647 {
 648         gchar *p;
 649         gchar *tmp;
 650         gint num;
 651
 652         p = strchr(xhdr_str, ' ');
 653         if (!p)
 654                 return NULL;
 655         else
 656                 p++;
 657
 658         num = atoi(xhdr_str);
 659         if (msginfo->msgnum != num) return NULL;
 660
 661         tmp = strchr(p, '\r');
 662         if (!tmp) tmp = strchr(p, '\n');
 663
 664         if (tmp)
 665                 return g_strndup(p, tmp - p);
 666         else
 667                 return g_strdup(p);
 668 }
 669
 670 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 671 {
 672         gchar * tmp;
 673         FILE * tmpfp;
 674         gchar buf[BUFFSIZE];
 675
 676         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 677                               G_DIR_SEPARATOR, (gint)msginfo);
 678         if (tmp == NULL)
 679                 return -1;
 680
 681         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 682                 FILE_OP_ERROR(tmp, "fopen");
 683                 return -1;
 684         }
 685         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 686                 FILE_OP_ERROR(tmp, "chmod");
 687                 g_warning("can't change file mode\n");
 688         }
 689
 690         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 691         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 692         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 693         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 694         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 695         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 696         get_rfc822_date(buf, sizeof(buf));
 697         fprintf(tmpfp, "Date: %s\r\n", buf);
 698         fprintf(tmpfp, "\r\n");
 699         fprintf(tmpfp, "removed with sylpheed\r\n");
 700
 701         fclose(tmpfp);
 702
 703         news_post(folder, tmp);
 704         remove(tmp);
 705
 706         g_free(tmp);
 707
 708         return 0;
 709 }
 710
 711 static gchar *news_folder_get_path(Folder *folder)
 712 {
 713         gchar *folder_path;
 714
 715         g_return_val_if_fail(folder->account != NULL, NULL);
 716
 717         folder_path = g_strconcat(get_news_cache_dir(),
 718                                   G_DIR_SEPARATOR_S,
 719                                   folder->account->nntp_server,
 720                                   NULL);
 721         return folder_path;
 722 }
 723
 724 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 725 {
 726         gchar *folder_path, *path;
 727
 728         g_return_val_if_fail(folder != NULL, NULL);
 729         g_return_val_if_fail(item != NULL, NULL);
 730         folder_path = news_folder_get_path(folder);
 731
 732         g_return_val_if_fail(folder_path != NULL, NULL);
 733         if (folder_path[0] == G_DIR_SEPARATOR) {
 734                 if (item->path)
 735                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 736                                            item->path, NULL);
 737                 else
 738                         path = g_strdup(folder_path);
 739         } else {
 740                 if (item->path)
 741                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 742                                            folder_path, G_DIR_SEPARATOR_S,
 743                                            item->path, NULL);
 744                 else
 745                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 746                                            folder_path, NULL);
 747         }
 748         g_free(folder_path);
 749
 750         return path;
 751 }
 752
 753 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 754 {
 755         NNTPSession *session;
 756         gint i, ok, num, first, last, nummsgs = 0;
 757         gchar *dir;
 758
 759         g_return_val_if_fail(item != NULL, -1);
 760         g_return_val_if_fail(item->folder != NULL, -1);
 761         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 762
 763         session = news_session_get(folder);
 764         g_return_val_if_fail(session != NULL, -1);
 765
 766         ok = news_select_group(session, item->path, &num, &first, &last);
 767         if (ok != NN_SUCCESS) {
 768                 log_warning(_("can't set group: %s\n"), item->path);
 769                 return -1;
 770         }
 771
 772         if(last < first) {
 773                 log_warning(_("invalid article range: %d - %d\n"),
 774                             first, last);
 775                 return 0;
 776         }
 777
 778         for(i = first; i <= last; i++) {
 779                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 780                 nummsgs++;
 781         }
 782
 783         dir = folder_item_get_path(item);
 784         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 785         remove_numbered_files(dir, 1, first - 1);
 786         g_free(dir);
 787
 788         return nummsgs;
 789 }
 790
 791 #define READ_TO_LISTEND(hdr) \
 792         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 793                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 794                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 795                         return msginfo; \
 796                 } \
 797         }
 798
 799 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 800 {
 801         NNTPSession *session;
 802         MsgInfo *msginfo = NULL;
 803         gchar buf[NNTPBUFSIZE];
 804
 805         session = news_session_get(folder);
 806         g_return_val_if_fail(session != NULL, NULL);
 807         g_return_val_if_fail(item != NULL, NULL);
 808         g_return_val_if_fail(item->folder != NULL, NULL);
 809         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 810
 811         log_message(_("getting xover %d in %s...\n"),
 812                     num, item->path);
 813         if (nntp_xover(session, num, num) != NN_SUCCESS) {
 814                 log_warning(_("can't get xover\n"));
 815                 return NULL;
 816         }
 817
 818         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 819                 log_warning(_("error occurred while getting xover.\n"));
 820                 return NULL;
 821         }
 822
 823         msginfo = news_parse_xover(buf);
 824         if (!msginfo) {
 825                 log_warning(_("invalid xover line: %s\n"), buf);
 826         }
 827
 828         READ_TO_LISTEND("xover");
 829
 830         if(!msginfo)
 831                 return NULL;
 832
 833         msginfo->folder = item;
 834         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 835         msginfo->flags.tmp_flags = MSG_NEWS;
 836         msginfo->newsgroups = g_strdup(item->path);
 837
 838         if (nntp_xhdr(session, "to", num, num) != NN_SUCCESS) {
 839                 log_warning(_("can't get xhdr\n"));
 840                 return msginfo;
 841         }
 842
 843         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 844                 log_warning(_("error occurred while getting xhdr.\n"));
 845                 return msginfo;
 846         }
 847
 848         msginfo->to = news_parse_xhdr(buf, msginfo);
 849
 850         READ_TO_LISTEND("xhdr (to)");
 851
 852         if (nntp_xhdr(session, "cc", num, num) != NN_SUCCESS) {
 853                 log_warning(_("can't get xhdr\n"));
 854                 return msginfo;
 855         }
 856
 857         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 858                 log_warning(_("error occurred while getting xhdr.\n"));
 859                 return msginfo;
 860         }
 861
 862         msginfo->cc = news_parse_xhdr(buf, msginfo);
 863
 864         READ_TO_LISTEND("xhdr (cc)");
 865
 866         return msginfo;
 867 }
 868
 869 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 870 {
 871         gchar buf[NNTPBUFSIZE];
 872         GSList *newlist = NULL;
 873         GSList *llast = NULL;
 874         MsgInfo *msginfo;
 875         guint count = 0, lines = (end - begin + 2) * 3;
 876
 877         g_return_val_if_fail(session != NULL, NULL);
 878         g_return_val_if_fail(item != NULL, NULL);
 879
 880         log_message(_("getting xover %d - %d in %s...\n"),
 881                     begin, end, item->path);
 882         if (nntp_xover(session, begin, end) != NN_SUCCESS) {
 883                 log_warning(_("can't get xover\n"));
 884                 return NULL;
 885         }
 886
 887         for (;;) {
 888                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 889                         log_warning(_("error occurred while getting xover.\n"));
 890                         return newlist;
 891                 }
 892                 count++;
 893                 progressindicator_set_percentage
 894                         (PROGRESS_TYPE_NETWORK,
 895                          session->fetch_base_percentage +
 896                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 897
 898                 if (buf[0] == '.' && buf[1] == '\r') break;
 899
 900                 msginfo = news_parse_xover(buf);
 901                 if (!msginfo) {
 902                         log_warning(_("invalid xover line: %s\n"), buf);
 903                         continue;
 904                 }
 905
 906                 msginfo->folder = item;
 907                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 908                 msginfo->flags.tmp_flags = MSG_NEWS;
 909                 msginfo->newsgroups = g_strdup(item->path);
 910
 911                 if (!newlist)
 912                         llast = newlist = g_slist_append(newlist, msginfo);
 913                 else {
 914                         llast = g_slist_append(llast, msginfo);
 915                         llast = llast->next;
 916                 }
 917         }
 918
 919         if (nntp_xhdr(session, "to", begin, end) != NN_SUCCESS) {
 920                 log_warning(_("can't get xhdr\n"));
 921                 return newlist;
 922         }
 923
 924         llast = newlist;
 925
 926         for (;;) {
 927                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 928                         log_warning(_("error occurred while getting xhdr.\n"));
 929                         return newlist;
 930                 }
 931                 count++;
 932                 progressindicator_set_percentage
 933                         (PROGRESS_TYPE_NETWORK,
 934                          session->fetch_base_percentage +
 935                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 936
 937                 if (buf[0] == '.' && buf[1] == '\r') break;
 938                 if (!llast) {
 939                         g_warning("llast == NULL\n");
 940                         continue;
 941                 }
 942
 943                 msginfo = (MsgInfo *)llast->data;
 944                 msginfo->to = news_parse_xhdr(buf, msginfo);
 945
 946                 llast = llast->next;
 947         }
 948
 949         if (nntp_xhdr(session, "cc", begin, end) != NN_SUCCESS) {
 950                 log_warning(_("can't get xhdr\n"));
 951                 return newlist;
 952         }
 953
 954         llast = newlist;
 955
 956         for (;;) {
 957                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 958                         log_warning(_("error occurred while getting xhdr.\n"));
 959                         return newlist;
 960                 }
 961                 count++;
 962                 progressindicator_set_percentage
 963                         (PROGRESS_TYPE_NETWORK,
 964                          session->fetch_base_percentage +
 965                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 966
 967                 if (buf[0] == '.' && buf[1] == '\r') break;
 968                 if (!llast) {
 969                         g_warning("llast == NULL\n");
 970                         continue;
 971                 }
 972
 973                 msginfo = (MsgInfo *)llast->data;
 974                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 975
 976                 llast = llast->next;
 977         }
 978
 979         return newlist;
 980 }
 981
 982 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
 983 {
 984         NNTPSession *session;
 985         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
 986         guint first, last, next;
 987         guint tofetch, fetched;
 988
 989         g_return_val_if_fail(folder != NULL, NULL);
 990         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 991         g_return_val_if_fail(msgnum_list != NULL, NULL);
 992         g_return_val_if_fail(item != NULL, NULL);
 993
 994         session = news_session_get(folder);
 995         g_return_val_if_fail(session != NULL, NULL);
 996
 997         tmp_msgnum_list = g_slist_copy(msgnum_list);
 998         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
 999
1000         progressindicator_start(PROGRESS_TYPE_NETWORK);
1001         tofetch = g_slist_length(tmp_msgnum_list);
1002         fetched = 0;
1003
1004         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1005         last = first;
1006         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1007                 next = GPOINTER_TO_INT(elem->data);
1008                 if(next != (last + 1)) {
1009                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1010                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1011                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1012                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1013                         fetched = last - first + 1;
1014                         first = next;
1015                 }
1016                 last = next;
1017         }
1018         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1019         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1020         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1021         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1022
1023         g_slist_free(tmp_msgnum_list);
1024
1025         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1026
1027         return msginfo_list;
1028 }