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 void news_folder_init             (Folder        *folder,
  61                                           const gchar   *name,
  62                                           const gchar   *path);
  63
  64 static Folder   *news_folder_new        (const gchar    *name,
  65                                          const gchar    *folder);
  66 static void      news_folder_destroy    (Folder         *folder);
  67
  68 static gchar *news_fetch_msg            (Folder         *folder,
  69                                          FolderItem     *item,
  70                                          gint            num);
  71
  72
  73 #if USE_OPENSSL
  74 static Session *news_session_new         (const gchar   *server,
  75                                           gushort        port,
  76                                           const gchar   *userid,
  77                                           const gchar   *passwd,
  78                                           SSLType        ssl_type);
  79 #else
  80 static Session *news_session_new         (const gchar   *server,
  81                                           gushort        port,
  82                                           const gchar   *userid,
  83                                           const gchar   *passwd);
  84 #endif
  85
  86 static gint news_get_article_cmd         (NNTPSession   *session,
  87                                           const gchar   *cmd,
  88                                           gint           num,
  89                                           gchar         *filename);
  90 static gint news_get_article             (NNTPSession   *session,
  91                                           gint           num,
  92                                           gchar         *filename);
  93
  94 static gint news_select_group            (NNTPSession   *session,
  95                                           const gchar   *group,
  96                                           gint          *num,
  97                                           gint          *first,
  98                                           gint          *last);
  99 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 100 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 101                                           MsgInfo       *msginfo);
 102 gint news_get_num_list                   (Folder        *folder,
 103                                           FolderItem    *item,
 104                                           GSList       **list,
 105                                           gboolean      *old_uids_valid);
 106 MsgInfo *news_get_msginfo                (Folder        *folder,
 107                                           FolderItem    *item,
 108                                           gint           num);
 109 GSList *news_get_msginfos                (Folder        *folder,
 110                                           FolderItem    *item,
 111                                           GSList        *msgnum_list);
 112 gboolean news_scan_required              (Folder        *folder,
 113                                           FolderItem    *item);
 114
 115 gint news_post_stream                    (Folder        *folder,
 116                                           FILE          *fp);
 117 static gchar *news_folder_get_path       (Folder        *folder);
 118 gchar *news_item_get_path                (Folder        *folder,
 119                                           FolderItem    *item);
 120
 121 static FolderClass news_class =
 122 {
 123         F_NEWS,
 124         "news",
 125         "News",
 126
 127         /* Folder functions */
 128         news_folder_new,
 129         news_folder_destroy,
 130         NULL,
 131         NULL,
 132
 133         /* FolderItem functions */
 134         NULL,
 135         NULL,
 136         news_item_get_path,
 137         NULL,
 138         NULL,
 139         NULL,
 140         NULL,
 141         news_get_num_list,
 142         NULL,
 143         NULL,
 144         NULL,
 145         news_scan_required,
 146
 147         /* Message functions */
 148         news_get_msginfo,
 149         news_get_msginfos,
 150         news_fetch_msg,
 151         NULL,
 152         NULL,
 153         NULL,
 154         NULL,
 155         NULL,
 156         NULL,
 157         NULL,
 158         NULL,
 159 };
 160
 161 FolderClass *news_get_class(void)
 162 {
 163         return &news_class;
 164 }
 165
 166 static Folder *news_folder_new(const gchar *name, const gchar *path)
 167 {
 168         Folder *folder;
 169
 170         folder = (Folder *)g_new0(NewsFolder, 1);
 171         folder->klass = &news_class;
 172         news_folder_init(folder, name, path);
 173
 174         return folder;
 175 }
 176
 177 static void news_folder_destroy(Folder *folder)
 178 {
 179         gchar *dir;
 180
 181         dir = news_folder_get_path(folder);
 182         if (is_dir_exist(dir))
 183                 remove_dir_recursive(dir);
 184         g_free(dir);
 185
 186         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 187 }
 188
 189 static void news_folder_init(Folder *folder, const gchar *name,
 190                              const gchar *path)
 191 {
 192         folder_remote_folder_init(folder, name, path);
 193 }
 194
 195 #if USE_OPENSSL
 196 static Session *news_session_new(const gchar *server, gushort port,
 197                                  const gchar *userid, const gchar *passwd,
 198                                  SSLType ssl_type)
 199 #else
 200 static Session *news_session_new(const gchar *server, gushort port,
 201                                  const gchar *userid, const gchar *passwd)
 202 #endif
 203 {
 204         gchar buf[NNTPBUFSIZE];
 205         Session *session;
 206
 207         g_return_val_if_fail(server != NULL, NULL);
 208
 209         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 210
 211 #if USE_OPENSSL
 212         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 213 #else
 214         session = nntp_session_new(server, port, buf, userid, passwd);
 215 #endif
 216
 217         return session;
 218 }
 219
 220 static Session *news_session_new_for_folder(Folder *folder)
 221 {
 222         Session *session;
 223         PrefsAccount *ac;
 224         const gchar *userid = NULL;
 225         gchar *passwd = NULL;
 226         gushort port;
 227         gchar buf[NNTPBUFSIZE];
 228
 229         g_return_val_if_fail(folder != NULL, NULL);
 230         g_return_val_if_fail(folder->account != NULL, NULL);
 231
 232         ac = folder->account;
 233         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 234                 userid = ac->userid;
 235                 if (ac->passwd && ac->passwd[0])
 236                         passwd = g_strdup(ac->passwd);
 237                 else
 238                         passwd = input_dialog_query_password(ac->nntp_server,
 239                                                              userid);
 240         }
 241
 242 #if USE_OPENSSL
 243         port = ac->set_nntpport ? ac->nntpport
 244                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 245         session = news_session_new(ac->nntp_server, port, userid, passwd,
 246                                    ac->ssl_nntp);
 247 #else
 248         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 249         session = news_session_new(ac->nntp_server, port, userid, passwd);
 250 #endif
 251         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 252                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 253
 254         g_free(passwd);
 255
 256         return session;
 257 }
 258
 259 static NNTPSession *news_session_get(Folder *folder)
 260 {
 261         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 262
 263         g_return_val_if_fail(folder != NULL, NULL);
 264         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 265         g_return_val_if_fail(folder->account != NULL, NULL);
 266
 267         if (!rfolder->session) {
 268                 rfolder->session = news_session_new_for_folder(folder);
 269                 return NNTP_SESSION(rfolder->session);
 270         }
 271
 272         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 273                 rfolder->session->last_access_time = time(NULL);
 274                 return NNTP_SESSION(rfolder->session);
 275         }
 276
 277         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 278             != NN_SUCCESS) {
 279                 log_warning("NNTP connection to %s:%d has been"
 280                               " disconnected. Reconnecting...\n",
 281                             folder->account->nntp_server,
 282                             folder->account->set_nntpport ?
 283                             folder->account->nntpport : NNTP_PORT);
 284                 session_destroy(rfolder->session);
 285                 rfolder->session = news_session_new_for_folder(folder);
 286         }
 287
 288         if (rfolder->session)
 289                 rfolder->session->last_access_time = time(NULL);
 290         return NNTP_SESSION(rfolder->session);
 291 }
 292
 293 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 294 {
 295         gchar *path, *filename;
 296         NNTPSession *session;
 297         gint ok;
 298
 299         g_return_val_if_fail(folder != NULL, NULL);
 300         g_return_val_if_fail(item != NULL, NULL);
 301
 302         path = folder_item_get_path(item);
 303         if (!is_dir_exist(path))
 304                 make_dir_hier(path);
 305         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 306         g_free(path);
 307
 308         if (is_file_exist(filename)) {
 309                 debug_print("article %d has been already cached.\n", num);
 310                 return filename;
 311         }
 312
 313         session = news_session_get(folder);
 314         if (!session) {
 315                 g_free(filename);
 316                 return NULL;
 317         }
 318
 319         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 320         if (ok != NN_SUCCESS) {
 321                 g_warning("can't select group %s\n", item->path);
 322                 g_free(filename);
 323                 return NULL;
 324         }
 325
 326         debug_print("getting article %d...\n", num);
 327         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 328                               num, filename);
 329         if (ok < 0) {
 330                 g_warning("can't read article %d\n", num);
 331                 session_destroy(SESSION(session));
 332                 REMOTE_FOLDER(folder)->session = NULL;
 333                 g_free(filename);
 334                 return NULL;
 335         }
 336
 337         return filename;
 338 }
 339
 340 static NewsGroupInfo *news_group_info_new(const gchar *name,
 341                                           gint first, gint last, gchar type)
 342 {
 343         NewsGroupInfo *ginfo;
 344
 345         ginfo = g_new(NewsGroupInfo, 1);
 346         ginfo->name = g_strdup(name);
 347         ginfo->first = first;
 348         ginfo->last = last;
 349         ginfo->type = type;
 350
 351         return ginfo;
 352 }
 353
 354 static void news_group_info_free(NewsGroupInfo *ginfo)
 355 {
 356         g_free(ginfo->name);
 357         g_free(ginfo);
 358 }
 359
 360 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 361                                     NewsGroupInfo *ginfo2)
 362 {
 363         return g_strcasecmp(ginfo1->name, ginfo2->name);
 364 }
 365
 366 GSList *news_get_group_list(Folder *folder)
 367 {
 368         gchar *path, *filename;
 369         FILE *fp;
 370         GSList *list = NULL;
 371         GSList *last = NULL;
 372         gchar buf[NNTPBUFSIZE];
 373
 374         g_return_val_if_fail(folder != NULL, NULL);
 375         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 376
 377         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 378         if (!is_dir_exist(path))
 379                 make_dir_hier(path);
 380         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 381         g_free(path);
 382
 383         if ((fp = fopen(filename, "rb")) == NULL) {
 384                 NNTPSession *session;
 385
 386                 session = news_session_get(folder);
 387                 if (!session) {
 388                         g_free(filename);
 389                         return NULL;
 390                 }
 391
 392                 if (nntp_list(session) != NN_SUCCESS) {
 393                         g_free(filename);
 394                         return NULL;
 395                 }
 396                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 397                         log_warning("can't retrieve newsgroup list\n");
 398                         session_destroy(SESSION(session));
 399                         REMOTE_FOLDER(folder)->session = NULL;
 400                         g_free(filename);
 401                         return NULL;
 402                 }
 403
 404                 if ((fp = fopen(filename, "rb")) == NULL) {
 405                         FILE_OP_ERROR(filename, "fopen");
 406                         g_free(filename);
 407                         return NULL;
 408                 }
 409         }
 410
 411         while (fgets(buf, sizeof(buf), fp) != NULL) {
 412                 gchar *p = buf;
 413                 gchar *name;
 414                 gint last_num;
 415                 gint first_num;
 416                 gchar type;
 417                 NewsGroupInfo *ginfo;
 418
 419                 p = strchr(p, ' ');
 420                 if (!p) continue;
 421                 *p = '\0';
 422                 p++;
 423                 name = buf;
 424
 425                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 426                         continue;
 427
 428                 ginfo = news_group_info_new(name, first_num, last_num, type);
 429
 430                 if (!last)
 431                         last = list = g_slist_append(NULL, ginfo);
 432                 else {
 433                         last = g_slist_append(last, ginfo);
 434                         last = last->next;
 435                 }
 436         }
 437
 438         fclose(fp);
 439         g_free(filename);
 440
 441         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 442
 443         return list;
 444 }
 445
 446 void news_group_list_free(GSList *group_list)
 447 {
 448         GSList *cur;
 449
 450         if (!group_list) return;
 451
 452         for (cur = group_list; cur != NULL; cur = cur->next)
 453                 news_group_info_free((NewsGroupInfo *)cur->data);
 454         g_slist_free(group_list);
 455 }
 456
 457 void news_remove_group_list_cache(Folder *folder)
 458 {
 459         gchar *path, *filename;
 460
 461         g_return_if_fail(folder != NULL);
 462         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 463
 464         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 465         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 466         g_free(path);
 467
 468         if (is_file_exist(filename)) {
 469                 if (remove(filename) < 0)
 470                         FILE_OP_ERROR(filename, "remove");
 471         }
 472         g_free(filename);
 473 }
 474
 475 gint news_post(Folder *folder, const gchar *file)
 476 {
 477         FILE *fp;
 478         gint ok;
 479
 480         g_return_val_if_fail(folder != NULL, -1);
 481         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 482         g_return_val_if_fail(file != NULL, -1);
 483
 484         if ((fp = fopen(file, "rb")) == NULL) {
 485                 FILE_OP_ERROR(file, "fopen");
 486                 return -1;
 487         }
 488
 489         ok = news_post_stream(folder, fp);
 490
 491         fclose(fp);
 492
 493         return ok;
 494 }
 495
 496 gint news_post_stream(Folder *folder, FILE *fp)
 497 {
 498         NNTPSession *session;
 499         gint ok;
 500
 501         g_return_val_if_fail(folder != NULL, -1);
 502         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 503         g_return_val_if_fail(fp != NULL, -1);
 504
 505         session = news_session_get(folder);
 506         if (!session) return -1;
 507
 508         ok = nntp_post(session, fp);
 509         if (ok != NN_SUCCESS) {
 510                 log_warning("can't post article.\n");
 511                 return -1;
 512         }
 513
 514         return 0;
 515 }
 516
 517 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 518                                  gint num, gchar *filename)
 519 {
 520         gchar *msgid;
 521
 522         if (nntp_get_article(session, cmd, num, &msgid)
 523             != NN_SUCCESS)
 524                 return -1;
 525
 526         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 527         g_free(msgid);
 528
 529         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 530                 log_warning("can't retrieve article %d\n", num);
 531                 return -1;
 532         }
 533
 534         return 0;
 535 }
 536
 537 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 538 {
 539         return news_get_article_cmd(session, "ARTICLE", num, filename);
 540 }
 541
 542 /**
 543  * news_select_group:
 544  * @session: Active NNTP session.
 545  * @group: Newsgroup name.
 546  * @num: Estimated number of articles.
 547  * @first: First article number.
 548  * @last: Last article number.
 549  *
 550  * Select newsgroup @group with the GROUP command if it is not already
 551  * selected in @session, or article numbers need to be returned.
 552  *
 553  * Return value: NNTP result code.
 554  **/
 555 static gint news_select_group(NNTPSession *session, const gchar *group,
 556                               gint *num, gint *first, gint *last)
 557 {
 558         gint ok;
 559         gint num_, first_, last_;
 560
 561         if (!num || !first || !last) {
 562                 if (session->group && g_strcasecmp(session->group, group) == 0)
 563                         return NN_SUCCESS;
 564                 num = &num_;
 565                 first = &first_;
 566                 last = &last_;
 567         }
 568
 569         g_free(session->group);
 570         session->group = NULL;
 571
 572         ok = nntp_group(session, group, num, first, last);
 573         if (ok == NN_SUCCESS)
 574                 session->group = g_strdup(group);
 575
 576         return ok;
 577 }
 578
 579 #define PARSE_ONE_PARAM(p, srcp) \
 580 { \
 581         p = strchr(srcp, '\t'); \
 582         if (!p) return NULL; \
 583         else \
 584                 *p++ = '\0'; \
 585 }
 586
 587 static MsgInfo *news_parse_xover(const gchar *xover_str)
 588 {
 589         MsgInfo *msginfo;
 590         gchar buf[NNTPBUFSIZE];
 591         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 592         gchar *p;
 593         gint num, size_int, line_int;
 594         gchar *xover_buf;
 595
 596         Xstrdup_a(xover_buf, xover_str, return NULL);
 597
 598         PARSE_ONE_PARAM(subject, xover_buf);
 599         PARSE_ONE_PARAM(sender, subject);
 600         PARSE_ONE_PARAM(date, sender);
 601         PARSE_ONE_PARAM(msgid, date);
 602         PARSE_ONE_PARAM(ref, msgid);
 603         PARSE_ONE_PARAM(size, ref);
 604         PARSE_ONE_PARAM(line, size);
 605         /*
 606          * PARSE_ONE_PARAM(xref, line);
 607          *
 608          * if we parse extra headers we should first examine the
 609          * LIST OVERVIEW.FMT response from the server. See
 610          * RFC2980 for details
 611          */
 612
 613         tmp = strchr(line, '\t');
 614         if (!tmp) tmp = strchr(line, '\r');
 615         if (!tmp) tmp = strchr(line, '\n');
 616         if (tmp) *tmp = '\0';
 617
 618         num = atoi(xover_str);
 619         size_int = atoi(size);
 620         line_int = atoi(line);
 621
 622         /* set MsgInfo */
 623         msginfo = procmsg_msginfo_new();
 624         msginfo->msgnum = num;
 625         msginfo->size = size_int;
 626
 627         msginfo->date = g_strdup(date);
 628         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 629
 630         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 631         msginfo->from = g_strdup(buf);
 632         msginfo->fromname = procheader_get_fromname(buf);
 633
 634         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 635         msginfo->subject = g_strdup(buf);
 636
 637         extract_parenthesis(msgid, '<', '>');
 638         remove_space(msgid);
 639         if (*msgid != '\0')
 640                 msginfo->msgid = g_strdup(msgid);
 641
 642         msginfo->references = g_strdup(ref);
 643         eliminate_parenthesis(ref, '(', ')');
 644         if ((p = strrchr(ref, '<')) != NULL) {
 645                 extract_parenthesis(p, '<', '>');
 646                 remove_space(p);
 647                 if (*p != '\0')
 648                         msginfo->inreplyto = g_strdup(p);
 649         }
 650
 651         /*
 652         msginfo->xref = g_strdup(xref);
 653         p = msginfo->xref+strlen(msginfo->xref) - 1;
 654         while (*p == '\r' || *p == '\n') {
 655                 *p = '\0';
 656                 p--;
 657         }
 658         */
 659
 660         return msginfo;
 661 }
 662
 663 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 664 {
 665         gchar *p;
 666         gchar *tmp;
 667         gint num;
 668
 669         p = strchr(xhdr_str, ' ');
 670         if (!p)
 671                 return NULL;
 672         else
 673                 p++;
 674
 675         num = atoi(xhdr_str);
 676         if (msginfo->msgnum != num) return NULL;
 677
 678         tmp = strchr(p, '\r');
 679         if (!tmp) tmp = strchr(p, '\n');
 680
 681         if (tmp)
 682                 return g_strndup(p, tmp - p);
 683         else
 684                 return g_strdup(p);
 685 }
 686
 687 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 688 {
 689         gchar * tmp;
 690         FILE * tmpfp;
 691         gchar buf[BUFFSIZE];
 692
 693         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 694                               G_DIR_SEPARATOR, (gint)msginfo);
 695         if (tmp == NULL)
 696                 return -1;
 697
 698         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 699                 FILE_OP_ERROR(tmp, "fopen");
 700                 return -1;
 701         }
 702         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 703                 FILE_OP_ERROR(tmp, "chmod");
 704                 g_warning("can't change file mode\n");
 705         }
 706
 707         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 708         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 709         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 710         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 711         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 712         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 713         get_rfc822_date(buf, sizeof(buf));
 714         fprintf(tmpfp, "Date: %s\r\n", buf);
 715         fprintf(tmpfp, "\r\n");
 716         fprintf(tmpfp, "removed with sylpheed\r\n");
 717
 718         fclose(tmpfp);
 719
 720         news_post(folder, tmp);
 721         remove(tmp);
 722
 723         g_free(tmp);
 724
 725         return 0;
 726 }
 727
 728 static gchar *news_folder_get_path(Folder *folder)
 729 {
 730         gchar *folder_path;
 731
 732         g_return_val_if_fail(folder->account != NULL, NULL);
 733
 734         folder_path = g_strconcat(get_news_cache_dir(),
 735                                   G_DIR_SEPARATOR_S,
 736                                   folder->account->nntp_server,
 737                                   NULL);
 738         return folder_path;
 739 }
 740
 741 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 742 {
 743         gchar *folder_path, *path;
 744
 745         g_return_val_if_fail(folder != NULL, NULL);
 746         g_return_val_if_fail(item != NULL, NULL);
 747         folder_path = news_folder_get_path(folder);
 748
 749         g_return_val_if_fail(folder_path != NULL, NULL);
 750         if (folder_path[0] == G_DIR_SEPARATOR) {
 751                 if (item->path)
 752                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 753                                            item->path, NULL);
 754                 else
 755                         path = g_strdup(folder_path);
 756         } else {
 757                 if (item->path)
 758                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 759                                            folder_path, G_DIR_SEPARATOR_S,
 760                                            item->path, NULL);
 761                 else
 762                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 763                                            folder_path, NULL);
 764         }
 765         g_free(folder_path);
 766
 767         return path;
 768 }
 769
 770 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 771 {
 772         NNTPSession *session;
 773         gint i, ok, num, first, last, nummsgs = 0;
 774         gchar *dir;
 775
 776         g_return_val_if_fail(item != NULL, -1);
 777         g_return_val_if_fail(item->folder != NULL, -1);
 778         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 779
 780         session = news_session_get(folder);
 781         g_return_val_if_fail(session != NULL, -1);
 782
 783         *old_uids_valid = TRUE;
 784
 785         ok = news_select_group(session, item->path, &num, &first, &last);
 786         if (ok != NN_SUCCESS) {
 787                 log_warning(_("can't set group: %s\n"), item->path);
 788                 return -1;
 789         }
 790
 791         if (num <= 0) {
 792                 remove_all_numbered_files(dir);
 793                 return 0;
 794         }
 795
 796         if(last < first) {
 797                 log_warning(_("invalid article range: %d - %d\n"),
 798                             first, last);
 799                 return 0;
 800         }
 801
 802         for(i = first; i <= last; i++) {
 803                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 804                 nummsgs++;
 805         }
 806
 807         dir = folder_item_get_path(item);
 808         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 809         remove_numbered_files(dir, 1, first - 1);
 810         g_free(dir);
 811
 812         return nummsgs;
 813 }
 814
 815 #define READ_TO_LISTEND(hdr) \
 816         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 817                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 818                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 819                         return msginfo; \
 820                 } \
 821         }
 822
 823 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 824 {
 825         NNTPSession *session;
 826         MsgInfo *msginfo = NULL;
 827         gchar buf[NNTPBUFSIZE];
 828
 829         session = news_session_get(folder);
 830         g_return_val_if_fail(session != NULL, NULL);
 831         g_return_val_if_fail(item != NULL, NULL);
 832         g_return_val_if_fail(item->folder != NULL, NULL);
 833         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 834
 835         log_message(_("getting xover %d in %s...\n"),
 836                     num, item->path);
 837         if (nntp_xover(session, num, num) != NN_SUCCESS) {
 838                 log_warning(_("can't get xover\n"));
 839                 return NULL;
 840         }
 841
 842         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 843                 log_warning(_("error occurred while getting xover.\n"));
 844                 return NULL;
 845         }
 846
 847         msginfo = news_parse_xover(buf);
 848         if (!msginfo) {
 849                 log_warning(_("invalid xover line: %s\n"), buf);
 850         }
 851
 852         READ_TO_LISTEND("xover");
 853
 854         if(!msginfo)
 855                 return NULL;
 856
 857         msginfo->folder = item;
 858         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 859         msginfo->flags.tmp_flags = MSG_NEWS;
 860         msginfo->newsgroups = g_strdup(item->path);
 861
 862         if (nntp_xhdr(session, "to", num, num) != NN_SUCCESS) {
 863                 log_warning(_("can't get xhdr\n"));
 864                 return msginfo;
 865         }
 866
 867         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 868                 log_warning(_("error occurred while getting xhdr.\n"));
 869                 return msginfo;
 870         }
 871
 872         msginfo->to = news_parse_xhdr(buf, msginfo);
 873
 874         READ_TO_LISTEND("xhdr (to)");
 875
 876         if (nntp_xhdr(session, "cc", num, num) != NN_SUCCESS) {
 877                 log_warning(_("can't get xhdr\n"));
 878                 return msginfo;
 879         }
 880
 881         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 882                 log_warning(_("error occurred while getting xhdr.\n"));
 883                 return msginfo;
 884         }
 885
 886         msginfo->cc = news_parse_xhdr(buf, msginfo);
 887
 888         READ_TO_LISTEND("xhdr (cc)");
 889
 890         return msginfo;
 891 }
 892
 893 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 894 {
 895         gchar buf[NNTPBUFSIZE];
 896         GSList *newlist = NULL;
 897         GSList *llast = NULL;
 898         MsgInfo *msginfo;
 899         guint count = 0, lines = (end - begin + 2) * 3;
 900
 901         g_return_val_if_fail(session != NULL, NULL);
 902         g_return_val_if_fail(item != NULL, NULL);
 903
 904         log_message(_("getting xover %d - %d in %s...\n"),
 905                     begin, end, item->path);
 906         if (nntp_xover(session, begin, end) != NN_SUCCESS) {
 907                 log_warning(_("can't get xover\n"));
 908                 return NULL;
 909         }
 910
 911         for (;;) {
 912                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 913                         log_warning(_("error occurred while getting xover.\n"));
 914                         return newlist;
 915                 }
 916                 count++;
 917                 progressindicator_set_percentage
 918                         (PROGRESS_TYPE_NETWORK,
 919                          session->fetch_base_percentage +
 920                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 921
 922                 if (buf[0] == '.' && buf[1] == '\r') break;
 923
 924                 msginfo = news_parse_xover(buf);
 925                 if (!msginfo) {
 926                         log_warning(_("invalid xover line: %s\n"), buf);
 927                         continue;
 928                 }
 929
 930                 msginfo->folder = item;
 931                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 932                 msginfo->flags.tmp_flags = MSG_NEWS;
 933                 msginfo->newsgroups = g_strdup(item->path);
 934
 935                 if (!newlist)
 936                         llast = newlist = g_slist_append(newlist, msginfo);
 937                 else {
 938                         llast = g_slist_append(llast, msginfo);
 939                         llast = llast->next;
 940                 }
 941         }
 942
 943         if (nntp_xhdr(session, "to", begin, end) != NN_SUCCESS) {
 944                 log_warning(_("can't get xhdr\n"));
 945                 return newlist;
 946         }
 947
 948         llast = newlist;
 949
 950         for (;;) {
 951                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 952                         log_warning(_("error occurred while getting xhdr.\n"));
 953                         return newlist;
 954                 }
 955                 count++;
 956                 progressindicator_set_percentage
 957                         (PROGRESS_TYPE_NETWORK,
 958                          session->fetch_base_percentage +
 959                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 960
 961                 if (buf[0] == '.' && buf[1] == '\r') break;
 962                 if (!llast) {
 963                         g_warning("llast == NULL\n");
 964                         continue;
 965                 }
 966
 967                 msginfo = (MsgInfo *)llast->data;
 968                 msginfo->to = news_parse_xhdr(buf, msginfo);
 969
 970                 llast = llast->next;
 971         }
 972
 973         if (nntp_xhdr(session, "cc", begin, end) != NN_SUCCESS) {
 974                 log_warning(_("can't get xhdr\n"));
 975                 return newlist;
 976         }
 977
 978         llast = newlist;
 979
 980         for (;;) {
 981                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 982                         log_warning(_("error occurred while getting xhdr.\n"));
 983                         return newlist;
 984                 }
 985                 count++;
 986                 progressindicator_set_percentage
 987                         (PROGRESS_TYPE_NETWORK,
 988                          session->fetch_base_percentage +
 989                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 990
 991                 if (buf[0] == '.' && buf[1] == '\r') break;
 992                 if (!llast) {
 993                         g_warning("llast == NULL\n");
 994                         continue;
 995                 }
 996
 997                 msginfo = (MsgInfo *)llast->data;
 998                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 999
1000                 llast = llast->next;
1001         }
1002
1003         return newlist;
1004 }
1005
1006 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1007 {
1008         NNTPSession *session;
1009         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1010         guint first, last, next;
1011         guint tofetch, fetched;
1012
1013         g_return_val_if_fail(folder != NULL, NULL);
1014         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1015         g_return_val_if_fail(msgnum_list != NULL, NULL);
1016         g_return_val_if_fail(item != NULL, NULL);
1017
1018         session = news_session_get(folder);
1019         g_return_val_if_fail(session != NULL, NULL);
1020
1021         tmp_msgnum_list = g_slist_copy(msgnum_list);
1022         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1023
1024         progressindicator_start(PROGRESS_TYPE_NETWORK);
1025         tofetch = g_slist_length(tmp_msgnum_list);
1026         fetched = 0;
1027
1028         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1029         last = first;
1030         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1031                 next = GPOINTER_TO_INT(elem->data);
1032                 if(next != (last + 1)) {
1033                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1034                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1035                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1036                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1037                         fetched = last - first + 1;
1038                         first = next;
1039                 }
1040                 last = next;
1041         }
1042         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1043         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1044         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1045         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1046
1047         g_slist_free(tmp_msgnum_list);
1048
1049         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1050
1051         return msginfo_list;
1052 }
1053
1054 gboolean news_scan_required(Folder *folder, FolderItem *item)
1055 {
1056         return TRUE;
1057 }