src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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 <glib/gi18n.h>
  28 #include <stdio.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <dirent.h>
  32 #include <unistd.h>
  33 #include <time.h>
  34
  35 #include "news.h"
  36 #include "news_gtk.h"
  37 #include "nntp.h"
  38 #include "socket.h"
  39 #include "recv.h"
  40 #include "procmsg.h"
  41 #include "procheader.h"
  42 #include "folder.h"
  43 #include "session.h"
  44 #include "statusbar.h"
  45 #include "codeconv.h"
  46 #include "utils.h"
  47 #include "prefs_common.h"
  48 #include "prefs_account.h"
  49 #include "inputdialog.h"
  50 #include "log.h"
  51 #include "progressindicator.h"
  52 #include "remotefolder.h"
  53 #include "alertpanel.h"
  54 #include "inc.h"
  55
  56 #if USE_OPENSSL
  57 #  include "ssl.h"
  58 #endif
  59
  60 #define NNTP_PORT       119
  61 #if USE_OPENSSL
  62 #define NNTPS_PORT      563
  63 #endif
  64
  65 typedef struct _NewsFolder      NewsFolder;
  66
  67 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  68
  69 struct _NewsFolder
  70 {
  71         RemoteFolder rfolder;
  72
  73         gboolean use_auth;
  74 };
  75
  76 static void news_folder_init             (Folder        *folder,
  77                                           const gchar   *name,
  78                                           const gchar   *path);
  79
  80 static Folder   *news_folder_new        (const gchar    *name,
  81                                          const gchar    *folder);
  82 static void      news_folder_destroy    (Folder         *folder);
  83
  84 static gchar *news_fetch_msg            (Folder         *folder,
  85                                          FolderItem     *item,
  86                                          gint            num);
  87
  88
  89 #if USE_OPENSSL
  90 static Session *news_session_new         (const gchar   *server,
  91                                           gushort        port,
  92                                           const gchar   *userid,
  93                                           const gchar   *passwd,
  94                                           SSLType        ssl_type);
  95 #else
  96 static Session *news_session_new         (const gchar   *server,
  97                                           gushort        port,
  98                                           const gchar   *userid,
  99                                           const gchar   *passwd);
 100 #endif
 101
 102 static gint news_get_article_cmd         (NNTPSession   *session,
 103                                           const gchar   *cmd,
 104                                           gint           num,
 105                                           gchar         *filename);
 106 static gint news_get_article             (NNTPSession   *session,
 107                                           gint           num,
 108                                           gchar         *filename);
 109
 110 static gint news_select_group            (NNTPSession   *session,
 111                                           const gchar   *group,
 112                                           gint          *num,
 113                                           gint          *first,
 114                                           gint          *last);
 115 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 116 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 117                                           MsgInfo       *msginfo);
 118 gint news_get_num_list                   (Folder        *folder,
 119                                           FolderItem    *item,
 120                                           GSList       **list,
 121                                           gboolean      *old_uids_valid);
 122 MsgInfo *news_get_msginfo                (Folder        *folder,
 123                                           FolderItem    *item,
 124                                           gint           num);
 125 GSList *news_get_msginfos                (Folder        *folder,
 126                                           FolderItem    *item,
 127                                           GSList        *msgnum_list);
 128 gboolean news_scan_required              (Folder        *folder,
 129                                           FolderItem    *item);
 130
 131 gint news_post_stream                    (Folder        *folder,
 132                                           FILE          *fp);
 133 static gchar *news_folder_get_path       (Folder        *folder);
 134 gchar *news_item_get_path                (Folder        *folder,
 135                                           FolderItem    *item);
 136 static void news_synchronise             (FolderItem    *item);
 137
 138 static FolderClass news_class;
 139
 140 FolderClass *news_get_class(void)
 141 {
 142         if (news_class.idstr == NULL) {
 143                 news_class.type = F_NEWS;
 144                 news_class.idstr = "news";
 145                 news_class.uistr = "News";
 146
 147                 /* Folder functions */
 148                 news_class.new_folder = news_folder_new;
 149                 news_class.destroy_folder = news_folder_destroy;
 150
 151                 /* FolderItem functions */
 152                 news_class.item_get_path = news_item_get_path;
 153                 news_class.get_num_list = news_get_num_list;
 154                 news_class.scan_required = news_scan_required;
 155
 156                 /* Message functions */
 157                 news_class.get_msginfo = news_get_msginfo;
 158                 news_class.get_msginfos = news_get_msginfos;
 159                 news_class.fetch_msg = news_fetch_msg;
 160                 news_class.synchronise = news_synchronise;
 161         };
 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         if (ac->ssl_nntp != SSL_NONE) {
 249                 if (alertpanel_full(_("Insecure connection"),
 250                         _("This connection is configured to be secured "
 251                           "using SSL, but SSL is not available in this "
 252                           "build of Sylpheed-Claws. \n\n"
 253                           "Do you want to continue connecting to this "
 254                           "server? The communication would not be "
 255                           "secure."),
 256                           _("Con_tinue connecting"),
 257                           GTK_STOCK_CANCEL, NULL,
 258                           FALSE, NULL, ALERT_WARNING,
 259                           G_ALERTALTERNATE) != G_ALERTDEFAULT)
 260                         return NULL;
 261         }
 262         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 263         session = news_session_new(ac->nntp_server, port, userid, passwd);
 264 #endif
 265         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 266                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 267
 268         g_free(passwd);
 269
 270         return session;
 271 }
 272
 273 static NNTPSession *news_session_get(Folder *folder)
 274 {
 275         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 276
 277         g_return_val_if_fail(folder != NULL, NULL);
 278         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 279         g_return_val_if_fail(folder->account != NULL, NULL);
 280
 281         if (prefs_common.work_offline && !inc_offline_should_override()) {
 282                 return NULL;
 283         }
 284
 285         if (!rfolder->session) {
 286                 rfolder->session = news_session_new_for_folder(folder);
 287                 return NNTP_SESSION(rfolder->session);
 288         }
 289
 290         if (time(NULL) - rfolder->session->last_access_time <
 291                 SESSION_TIMEOUT_INTERVAL) {
 292                 return NNTP_SESSION(rfolder->session);
 293         }
 294
 295         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 296             != NN_SUCCESS) {
 297                 log_warning(_("NNTP connection to %s:%d has been"
 298                               " disconnected. Reconnecting...\n"),
 299                             folder->account->nntp_server,
 300                             folder->account->set_nntpport ?
 301                             folder->account->nntpport : NNTP_PORT);
 302                 session_destroy(rfolder->session);
 303                 rfolder->session = news_session_new_for_folder(folder);
 304         }
 305
 306         if (rfolder->session)
 307                 session_set_access_time(rfolder->session);
 308
 309         return NNTP_SESSION(rfolder->session);
 310 }
 311
 312 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 313 {
 314         gchar *path, *filename;
 315         NNTPSession *session;
 316         gint ok;
 317
 318         g_return_val_if_fail(folder != NULL, NULL);
 319         g_return_val_if_fail(item != NULL, NULL);
 320
 321         path = folder_item_get_path(item);
 322         if (!is_dir_exist(path))
 323                 make_dir_hier(path);
 324         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 325         g_free(path);
 326
 327         if (is_file_exist(filename)) {
 328                 debug_print("article %d has been already cached.\n", num);
 329                 return filename;
 330         }
 331
 332         session = news_session_get(folder);
 333         if (!session) {
 334                 g_free(filename);
 335                 return NULL;
 336         }
 337
 338         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 339         if (ok != NN_SUCCESS) {
 340                 if (ok == NN_SOCKET) {
 341                         session_destroy(SESSION(session));
 342                         REMOTE_FOLDER(folder)->session = NULL;
 343                 }
 344                 g_free(filename);
 345                 return NULL;
 346         }
 347
 348         debug_print("getting article %d...\n", num);
 349         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 350                               num, filename);
 351         if (ok != NN_SUCCESS) {
 352                 g_warning("can't read article %d\n", num);
 353                 if (ok == NN_SOCKET) {
 354                         session_destroy(SESSION(session));
 355                         REMOTE_FOLDER(folder)->session = NULL;
 356                 }
 357                 g_free(filename);
 358                 return NULL;
 359         }
 360
 361         return filename;
 362 }
 363
 364 static NewsGroupInfo *news_group_info_new(const gchar *name,
 365                                           gint first, gint last, gchar type)
 366 {
 367         NewsGroupInfo *ginfo;
 368
 369         ginfo = g_new(NewsGroupInfo, 1);
 370         ginfo->name = g_strdup(name);
 371         ginfo->first = first;
 372         ginfo->last = last;
 373         ginfo->type = type;
 374
 375         return ginfo;
 376 }
 377
 378 static void news_group_info_free(NewsGroupInfo *ginfo)
 379 {
 380         g_free(ginfo->name);
 381         g_free(ginfo);
 382 }
 383
 384 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 385                                     NewsGroupInfo *ginfo2)
 386 {
 387         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 388 }
 389
 390 GSList *news_get_group_list(Folder *folder)
 391 {
 392         gchar *path, *filename;
 393         FILE *fp;
 394         GSList *list = NULL;
 395         GSList *last = NULL;
 396         gchar buf[NNTPBUFSIZE];
 397
 398         g_return_val_if_fail(folder != NULL, NULL);
 399         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 400
 401         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 402         if (!is_dir_exist(path))
 403                 make_dir_hier(path);
 404         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 405         g_free(path);
 406
 407         if ((fp = g_fopen(filename, "rb")) == NULL) {
 408                 NNTPSession *session;
 409                 gint ok;
 410
 411                 session = news_session_get(folder);
 412                 if (!session) {
 413                         g_free(filename);
 414                         return NULL;
 415                 }
 416
 417                 ok = nntp_list(session);
 418                 if (ok != NN_SUCCESS) {
 419                         if (ok == NN_SOCKET) {
 420                                 session_destroy(SESSION(session));
 421                                 REMOTE_FOLDER(folder)->session = NULL;
 422                         }
 423                         g_free(filename);
 424                         return NULL;
 425                 }
 426                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 427                         log_warning(_("can't retrieve newsgroup list\n"));
 428                         session_destroy(SESSION(session));
 429                         REMOTE_FOLDER(folder)->session = NULL;
 430                         g_free(filename);
 431                         return NULL;
 432                 }
 433
 434                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 435                         FILE_OP_ERROR(filename, "fopen");
 436                         g_free(filename);
 437                         return NULL;
 438                 }
 439         }
 440
 441         while (fgets(buf, sizeof(buf), fp) != NULL) {
 442                 gchar *p = buf;
 443                 gchar *name;
 444                 gint last_num;
 445                 gint first_num;
 446                 gchar type;
 447                 NewsGroupInfo *ginfo;
 448
 449                 p = strchr(p, ' ');
 450                 if (!p) continue;
 451                 *p = '\0';
 452                 p++;
 453                 name = buf;
 454
 455                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 456                         continue;
 457
 458                 ginfo = news_group_info_new(name, first_num, last_num, type);
 459
 460                 if (!last)
 461                         last = list = g_slist_append(NULL, ginfo);
 462                 else {
 463                         last = g_slist_append(last, ginfo);
 464                         last = last->next;
 465                 }
 466         }
 467
 468         fclose(fp);
 469         g_free(filename);
 470
 471         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 472
 473         return list;
 474 }
 475
 476 void news_group_list_free(GSList *group_list)
 477 {
 478         GSList *cur;
 479
 480         if (!group_list) return;
 481
 482         for (cur = group_list; cur != NULL; cur = cur->next)
 483                 news_group_info_free((NewsGroupInfo *)cur->data);
 484         g_slist_free(group_list);
 485 }
 486
 487 void news_remove_group_list_cache(Folder *folder)
 488 {
 489         gchar *path, *filename;
 490
 491         g_return_if_fail(folder != NULL);
 492         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 493
 494         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 495         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 496         g_free(path);
 497
 498         if (is_file_exist(filename)) {
 499                 if (remove(filename) < 0)
 500                         FILE_OP_ERROR(filename, "remove");
 501         }
 502         g_free(filename);
 503 }
 504
 505 gint news_post(Folder *folder, const gchar *file)
 506 {
 507         FILE *fp;
 508         gint ok;
 509
 510         g_return_val_if_fail(folder != NULL, -1);
 511         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 512         g_return_val_if_fail(file != NULL, -1);
 513
 514         if ((fp = g_fopen(file, "rb")) == NULL) {
 515                 FILE_OP_ERROR(file, "fopen");
 516                 return -1;
 517         }
 518
 519         ok = news_post_stream(folder, fp);
 520
 521         fclose(fp);
 522
 523         return ok;
 524 }
 525
 526 gint news_post_stream(Folder *folder, FILE *fp)
 527 {
 528         NNTPSession *session;
 529         gint ok;
 530
 531         g_return_val_if_fail(folder != NULL, -1);
 532         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 533         g_return_val_if_fail(fp != NULL, -1);
 534
 535         session = news_session_get(folder);
 536         if (!session) return -1;
 537
 538         ok = nntp_post(session, fp);
 539         if (ok != NN_SUCCESS) {
 540                 log_warning(_("can't post article.\n"));
 541                 if (ok == NN_SOCKET) {
 542                         session_destroy(SESSION(session));
 543                         REMOTE_FOLDER(folder)->session = NULL;
 544                 }
 545                 return -1;
 546         }
 547
 548         return 0;
 549 }
 550
 551 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 552                                  gint num, gchar *filename)
 553 {
 554         gchar *msgid;
 555         gint ok;
 556
 557         ok = nntp_get_article(session, cmd, num, &msgid);
 558         if (ok != NN_SUCCESS)
 559                 return ok;
 560
 561         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 562         g_free(msgid);
 563
 564         ok = recv_write_to_file(SESSION(session)->sock, filename);
 565         if (ok < 0) {
 566                 log_warning(_("can't retrieve article %d\n"), num);
 567                 if (ok == -2)
 568                         return NN_SOCKET;
 569                 else
 570                         return NN_IOERR;
 571         }
 572
 573         return NN_SUCCESS;
 574 }
 575
 576 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 577 {
 578         return news_get_article_cmd(session, "ARTICLE", num, filename);
 579 }
 580
 581 /**
 582  * news_select_group:
 583  * @session: Active NNTP session.
 584  * @group: Newsgroup name.
 585  * @num: Estimated number of articles.
 586  * @first: First article number.
 587  * @last: Last article number.
 588  *
 589  * Select newsgroup @group with the GROUP command if it is not already
 590  * selected in @session, or article numbers need to be returned.
 591  *
 592  * Return value: NNTP result code.
 593  **/
 594 static gint news_select_group(NNTPSession *session, const gchar *group,
 595                               gint *num, gint *first, gint *last)
 596 {
 597         gint ok;
 598         gint num_, first_, last_;
 599
 600         if (!num || !first || !last) {
 601                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 602                         return NN_SUCCESS;
 603                 num = &num_;
 604                 first = &first_;
 605                 last = &last_;
 606         }
 607
 608         g_free(session->group);
 609         session->group = NULL;
 610
 611         ok = nntp_group(session, group, num, first, last);
 612         if (ok == NN_SUCCESS)
 613                 session->group = g_strdup(group);
 614         else
 615                 log_warning(_("can't select group: %s\n"), group);
 616
 617         return ok;
 618 }
 619
 620 #define PARSE_ONE_PARAM(p, srcp) \
 621 { \
 622         p = strchr(srcp, '\t'); \
 623         if (!p) return NULL; \
 624         else \
 625                 *p++ = '\0'; \
 626 }
 627
 628 static MsgInfo *news_parse_xover(const gchar *xover_str)
 629 {
 630         MsgInfo *msginfo;
 631         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 632         gchar *p;
 633         gint num, size_int, line_int;
 634         gchar *xover_buf;
 635
 636         Xstrdup_a(xover_buf, xover_str, return NULL);
 637
 638         PARSE_ONE_PARAM(subject, xover_buf);
 639         PARSE_ONE_PARAM(sender, subject);
 640         PARSE_ONE_PARAM(date, sender);
 641         PARSE_ONE_PARAM(msgid, date);
 642         PARSE_ONE_PARAM(ref, msgid);
 643         PARSE_ONE_PARAM(size, ref);
 644         PARSE_ONE_PARAM(line, size);
 645         /*
 646          * PARSE_ONE_PARAM(xref, line);
 647          *
 648          * if we parse extra headers we should first examine the
 649          * LIST OVERVIEW.FMT response from the server. See
 650          * RFC2980 for details
 651          */
 652
 653         tmp = strchr(line, '\t');
 654         if (!tmp) tmp = strchr(line, '\r');
 655         if (!tmp) tmp = strchr(line, '\n');
 656         if (tmp) *tmp = '\0';
 657
 658         num = atoi(xover_str);
 659         size_int = atoi(size);
 660         line_int = atoi(line);
 661
 662         /* set MsgInfo */
 663         msginfo = procmsg_msginfo_new();
 664         msginfo->msgnum = num;
 665         msginfo->size = size_int;
 666
 667         msginfo->date = g_strdup(date);
 668         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 669
 670         msginfo->from = conv_unmime_header(sender, NULL);
 671         msginfo->fromname = procheader_get_fromname(msginfo->from);
 672
 673         msginfo->subject = conv_unmime_header(subject, NULL);
 674
 675         if (msgid) {
 676                 extract_parenthesis(msgid, '<', '>');
 677                 remove_space(msgid);
 678                 if (*msgid != '\0')
 679                         msginfo->msgid = g_strdup(msgid);
 680         }
 681
 682         /* FIXME: this is a quick fix; references' meaning was changed
 683          * into having the actual list of references in the References: header.
 684          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 685          * their things properly. */
 686         if (ref && strlen(ref)) {
 687                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 688                 guint i = 0;
 689
 690                 while (ref_tokens[i]) {
 691                         gchar *cur_ref = ref_tokens[i];
 692                         msginfo->references = references_list_append(msginfo->references,
 693                                         g_strdup(cur_ref));
 694                         i++;
 695                 }
 696                 g_strfreev(ref_tokens);
 697
 698                 eliminate_parenthesis(ref, '(', ')');
 699                 if ((p = strrchr(ref, '<')) != NULL) {
 700                         extract_parenthesis(p, '<', '>');
 701                         remove_space(p);
 702                         if (*p != '\0')
 703                                 msginfo->inreplyto = g_strdup(p);
 704                 }
 705         }
 706
 707         /*
 708         msginfo->xref = g_strdup(xref);
 709         p = msginfo->xref+strlen(msginfo->xref) - 1;
 710         while (*p == '\r' || *p == '\n') {
 711                 *p = '\0';
 712                 p--;
 713         }
 714         */
 715
 716         return msginfo;
 717 }
 718
 719 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 720 {
 721         gchar *p;
 722         gchar *tmp;
 723         gint num;
 724
 725         p = strchr(xhdr_str, ' ');
 726         if (!p)
 727                 return NULL;
 728         else
 729                 p++;
 730
 731         num = atoi(xhdr_str);
 732         if (msginfo->msgnum != num) return NULL;
 733
 734         tmp = strchr(p, '\r');
 735         if (!tmp) tmp = strchr(p, '\n');
 736
 737         if (tmp)
 738                 return g_strndup(p, tmp - p);
 739         else
 740                 return g_strdup(p);
 741 }
 742
 743 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 744 {
 745         gchar * tmp;
 746         FILE * tmpfp;
 747         gchar buf[BUFFSIZE];
 748
 749         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 750                               G_DIR_SEPARATOR, (gint)msginfo);
 751         if (tmp == NULL)
 752                 return -1;
 753
 754         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 755                 FILE_OP_ERROR(tmp, "fopen");
 756                 return -1;
 757         }
 758         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 759                 FILE_OP_ERROR(tmp, "chmod");
 760                 g_warning("can't change file mode\n");
 761         }
 762
 763         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 764         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 765         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 766         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 767         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 768         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 769         get_rfc822_date(buf, sizeof(buf));
 770         fprintf(tmpfp, "Date: %s\r\n", buf);
 771         fprintf(tmpfp, "\r\n");
 772         fprintf(tmpfp, "removed with sylpheed\r\n");
 773
 774         fclose(tmpfp);
 775
 776         news_post(folder, tmp);
 777         remove(tmp);
 778
 779         g_free(tmp);
 780
 781         return 0;
 782 }
 783
 784 static gchar *news_folder_get_path(Folder *folder)
 785 {
 786         gchar *folder_path;
 787
 788         g_return_val_if_fail(folder->account != NULL, NULL);
 789
 790         folder_path = g_strconcat(get_news_cache_dir(),
 791                                   G_DIR_SEPARATOR_S,
 792                                   folder->account->nntp_server,
 793                                   NULL);
 794         return folder_path;
 795 }
 796
 797 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 798 {
 799         gchar *folder_path, *path;
 800
 801         g_return_val_if_fail(folder != NULL, NULL);
 802         g_return_val_if_fail(item != NULL, NULL);
 803         folder_path = news_folder_get_path(folder);
 804
 805         g_return_val_if_fail(folder_path != NULL, NULL);
 806         if (folder_path[0] == G_DIR_SEPARATOR) {
 807                 if (item->path)
 808                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 809                                            item->path, NULL);
 810                 else
 811                         path = g_strdup(folder_path);
 812         } else {
 813                 if (item->path)
 814                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 815                                            folder_path, G_DIR_SEPARATOR_S,
 816                                            item->path, NULL);
 817                 else
 818                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 819                                            folder_path, NULL);
 820         }
 821         g_free(folder_path);
 822
 823         return path;
 824 }
 825
 826 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 827 {
 828         NNTPSession *session;
 829         gint i, ok, num, first, last, nummsgs = 0;
 830         gchar *dir;
 831
 832         g_return_val_if_fail(item != NULL, -1);
 833         g_return_val_if_fail(item->folder != NULL, -1);
 834         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 835
 836         session = news_session_get(folder);
 837         g_return_val_if_fail(session != NULL, -1);
 838
 839         *old_uids_valid = TRUE;
 840
 841         ok = news_select_group(session, item->path, &num, &first, &last);
 842         if (ok != NN_SUCCESS) {
 843                 log_warning(_("can't set group: %s\n"), item->path);
 844                 return -1;
 845         }
 846
 847         dir = news_folder_get_path(folder);
 848         if (num <= 0)
 849                 remove_all_numbered_files(dir);
 850         else if (last < first)
 851                 log_warning(_("invalid article range: %d - %d\n"),
 852                             first, last);
 853         else {
 854                 for (i = first; i <= last; i++) {
 855                         *msgnum_list = g_slist_prepend(*msgnum_list,
 856                                                        GINT_TO_POINTER(i));
 857                         nummsgs++;
 858                 }
 859                 debug_print("removing old messages from %d to %d in %s\n",
 860                             first, last, dir);
 861                 remove_numbered_files(dir, 1, first - 1);
 862         }
 863         g_free(dir);
 864
 865         return nummsgs;
 866 }
 867
 868 #define READ_TO_LISTEND(hdr) \
 869         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 870                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 871                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 872                         return msginfo; \
 873                 } \
 874         }
 875
 876 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 877 {
 878         NNTPSession *session;
 879         MsgInfo *msginfo = NULL;
 880         gchar buf[NNTPBUFSIZE];
 881         gint ok;
 882
 883         session = news_session_get(folder);
 884         g_return_val_if_fail(session != NULL, NULL);
 885         g_return_val_if_fail(item != NULL, NULL);
 886         g_return_val_if_fail(item->folder != NULL, NULL);
 887         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 888
 889         log_message(_("getting xover %d in %s...\n"),
 890                     num, item->path);
 891         ok = nntp_xover(session, num, num);
 892         if (ok != NN_SUCCESS) {
 893                 log_warning(_("can't get xover\n"));
 894                 if (ok == NN_SOCKET) {
 895                         session_destroy(SESSION(session));
 896                         REMOTE_FOLDER(item->folder)->session = NULL;
 897                 }
 898                 return NULL;
 899         }
 900
 901         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 902                 log_warning(_("error occurred while getting xover.\n"));
 903                 return NULL;
 904         }
 905
 906         msginfo = news_parse_xover(buf);
 907         if (!msginfo) {
 908                 log_warning(_("invalid xover line: %s\n"), buf);
 909         }
 910
 911         READ_TO_LISTEND("xover");
 912
 913         if(!msginfo)
 914                 return NULL;
 915
 916         msginfo->folder = item;
 917         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 918         msginfo->flags.tmp_flags = MSG_NEWS;
 919         msginfo->newsgroups = g_strdup(item->path);
 920
 921         ok = nntp_xhdr(session, "to", num, num);
 922         if (ok != NN_SUCCESS) {
 923                 log_warning(_("can't get xhdr\n"));
 924                 if (ok == NN_SOCKET) {
 925                         session_destroy(SESSION(session));
 926                         REMOTE_FOLDER(item->folder)->session = NULL;
 927                 }
 928                 return msginfo;
 929         }
 930
 931         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 932                 log_warning(_("error occurred while getting xhdr.\n"));
 933                 return msginfo;
 934         }
 935
 936         msginfo->to = news_parse_xhdr(buf, msginfo);
 937
 938         READ_TO_LISTEND("xhdr (to)");
 939
 940         ok = nntp_xhdr(session, "cc", num, num);
 941         if (ok != NN_SUCCESS) {
 942                 log_warning(_("can't get xhdr\n"));
 943                 if (ok == NN_SOCKET) {
 944                         session_destroy(SESSION(session));
 945                         REMOTE_FOLDER(item->folder)->session = NULL;
 946                 }
 947                 return msginfo;
 948         }
 949
 950         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 951                 log_warning(_("error occurred while getting xhdr.\n"));
 952                 return msginfo;
 953         }
 954
 955         msginfo->cc = news_parse_xhdr(buf, msginfo);
 956
 957         READ_TO_LISTEND("xhdr (cc)");
 958
 959         return msginfo;
 960 }
 961
 962 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 963 {
 964         gchar buf[NNTPBUFSIZE];
 965         GSList *newlist = NULL;
 966         GSList *llast = NULL;
 967         MsgInfo *msginfo;
 968         guint count = 0, lines = (end - begin + 2) * 3;
 969         gint ok;
 970
 971         g_return_val_if_fail(session != NULL, NULL);
 972         g_return_val_if_fail(item != NULL, NULL);
 973
 974         log_message(_("getting xover %d - %d in %s...\n"),
 975                     begin, end, item->path);
 976         ok = nntp_xover(session, begin, end);
 977         if (ok != NN_SUCCESS) {
 978                 log_warning(_("can't get xover\n"));
 979                 if (ok == NN_SOCKET) {
 980                         session_destroy(SESSION(session));
 981                         REMOTE_FOLDER(item->folder)->session = NULL;
 982                 }
 983                 return NULL;
 984         }
 985
 986         for (;;) {
 987                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 988                         log_warning(_("error occurred while getting xover.\n"));
 989                         return newlist;
 990                 }
 991                 count++;
 992                 progressindicator_set_percentage
 993                         (PROGRESS_TYPE_NETWORK,
 994                          session->fetch_base_percentage +
 995                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 996
 997                 if (buf[0] == '.' && buf[1] == '\r') break;
 998
 999                 msginfo = news_parse_xover(buf);
1000                 if (!msginfo) {
1001                         log_warning(_("invalid xover line: %s\n"), buf);
1002                         continue;
1003                 }
1004
1005                 msginfo->folder = item;
1006                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
1007                 msginfo->flags.tmp_flags = MSG_NEWS;
1008                 msginfo->newsgroups = g_strdup(item->path);
1009
1010                 if (!newlist)
1011                         llast = newlist = g_slist_append(newlist, msginfo);
1012                 else {
1013                         llast = g_slist_append(llast, msginfo);
1014                         llast = llast->next;
1015                 }
1016         }
1017
1018         ok = nntp_xhdr(session, "to", begin, end);
1019         if (ok != NN_SUCCESS) {
1020                 log_warning(_("can't get xhdr\n"));
1021                 if (ok == NN_SOCKET) {
1022                         session_destroy(SESSION(session));
1023                         REMOTE_FOLDER(item->folder)->session = NULL;
1024                 }
1025                 return newlist;
1026         }
1027
1028         llast = newlist;
1029
1030         for (;;) {
1031                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1032                         log_warning(_("error occurred while getting xhdr.\n"));
1033                         return newlist;
1034                 }
1035                 count++;
1036                 progressindicator_set_percentage
1037                         (PROGRESS_TYPE_NETWORK,
1038                          session->fetch_base_percentage +
1039                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1040
1041                 if (buf[0] == '.' && buf[1] == '\r') break;
1042                 if (!llast) {
1043                         g_warning("llast == NULL\n");
1044                         continue;
1045                 }
1046
1047                 msginfo = (MsgInfo *)llast->data;
1048                 msginfo->to = news_parse_xhdr(buf, msginfo);
1049
1050                 llast = llast->next;
1051         }
1052
1053         ok = nntp_xhdr(session, "cc", begin, end);
1054         if (ok != NN_SUCCESS) {
1055                 log_warning(_("can't get xhdr\n"));
1056                 if (ok == NN_SOCKET) {
1057                         session_destroy(SESSION(session));
1058                         REMOTE_FOLDER(item->folder)->session = NULL;
1059                 }
1060                 return newlist;
1061         }
1062
1063         llast = newlist;
1064
1065         for (;;) {
1066                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1067                         log_warning(_("error occurred while getting xhdr.\n"));
1068                         return newlist;
1069                 }
1070                 count++;
1071                 progressindicator_set_percentage
1072                         (PROGRESS_TYPE_NETWORK,
1073                          session->fetch_base_percentage +
1074                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1075
1076                 if (buf[0] == '.' && buf[1] == '\r') break;
1077                 if (!llast) {
1078                         g_warning("llast == NULL\n");
1079                         continue;
1080                 }
1081
1082                 msginfo = (MsgInfo *)llast->data;
1083                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1084
1085                 llast = llast->next;
1086         }
1087
1088         session_set_access_time(SESSION(session));
1089
1090         return newlist;
1091 }
1092
1093 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1094 {
1095         NNTPSession *session;
1096         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1097         guint first, last, next;
1098         guint tofetch, fetched;
1099
1100         g_return_val_if_fail(folder != NULL, NULL);
1101         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1102         g_return_val_if_fail(msgnum_list != NULL, NULL);
1103         g_return_val_if_fail(item != NULL, NULL);
1104
1105         session = news_session_get(folder);
1106         g_return_val_if_fail(session != NULL, NULL);
1107
1108         tmp_msgnum_list = g_slist_copy(msgnum_list);
1109         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1110
1111         progressindicator_start(PROGRESS_TYPE_NETWORK);
1112         tofetch = g_slist_length(tmp_msgnum_list);
1113         fetched = 0;
1114
1115         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1116         last = first;
1117         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1118                 next = GPOINTER_TO_INT(elem->data);
1119                 if(next != (last + 1)) {
1120                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1121                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1122                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1123                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1124                         fetched = last - first + 1;
1125                         first = next;
1126                 }
1127                 last = next;
1128         }
1129         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1130         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1131         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1132         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1133
1134         g_slist_free(tmp_msgnum_list);
1135
1136         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1137
1138         return msginfo_list;
1139 }
1140
1141 gboolean news_scan_required(Folder *folder, FolderItem *item)
1142 {
1143         return TRUE;
1144 }
1145
1146 void news_synchronise(FolderItem *item)
1147 {
1148         news_gtk_synchronise(item);
1149 }