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., 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 <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 #if USE_OPENSSL
  55 #  include "ssl.h"
  56 #endif
  57
  58 #define NNTP_PORT       119
  59 #if USE_OPENSSL
  60 #define NNTPS_PORT      563
  61 #endif
  62
  63 typedef struct _NewsFolder      NewsFolder;
  64
  65 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  66
  67 struct _NewsFolder
  68 {
  69         RemoteFolder rfolder;
  70
  71         gboolean use_auth;
  72 };
  73
  74 static void news_folder_init             (Folder        *folder,
  75                                           const gchar   *name,
  76                                           const gchar   *path);
  77
  78 static Folder   *news_folder_new        (const gchar    *name,
  79                                          const gchar    *folder);
  80 static void      news_folder_destroy    (Folder         *folder);
  81
  82 static gchar *news_fetch_msg            (Folder         *folder,
  83                                          FolderItem     *item,
  84                                          gint            num);
  85
  86
  87 #if USE_OPENSSL
  88 static Session *news_session_new         (const gchar   *server,
  89                                           gushort        port,
  90                                           const gchar   *userid,
  91                                           const gchar   *passwd,
  92                                           SSLType        ssl_type);
  93 #else
  94 static Session *news_session_new         (const gchar   *server,
  95                                           gushort        port,
  96                                           const gchar   *userid,
  97                                           const gchar   *passwd);
  98 #endif
  99
 100 static gint news_get_article_cmd         (NNTPSession   *session,
 101                                           const gchar   *cmd,
 102                                           gint           num,
 103                                           gchar         *filename);
 104 static gint news_get_article             (NNTPSession   *session,
 105                                           gint           num,
 106                                           gchar         *filename);
 107
 108 static gint news_select_group            (NNTPSession   *session,
 109                                           const gchar   *group,
 110                                           gint          *num,
 111                                           gint          *first,
 112                                           gint          *last);
 113 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 114 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 115                                           MsgInfo       *msginfo);
 116 gint news_get_num_list                   (Folder        *folder,
 117                                           FolderItem    *item,
 118                                           GSList       **list,
 119                                           gboolean      *old_uids_valid);
 120 MsgInfo *news_get_msginfo                (Folder        *folder,
 121                                           FolderItem    *item,
 122                                           gint           num);
 123 GSList *news_get_msginfos                (Folder        *folder,
 124                                           FolderItem    *item,
 125                                           GSList        *msgnum_list);
 126 gboolean news_scan_required              (Folder        *folder,
 127                                           FolderItem    *item);
 128
 129 gint news_post_stream                    (Folder        *folder,
 130                                           FILE          *fp);
 131 static gchar *news_folder_get_path       (Folder        *folder);
 132 gchar *news_item_get_path                (Folder        *folder,
 133                                           FolderItem    *item);
 134 static void news_synchronise             (FolderItem    *item);
 135
 136 static FolderClass news_class;
 137
 138 FolderClass *news_get_class(void)
 139 {
 140         if (news_class.idstr == NULL) {
 141                 news_class.type = F_NEWS;
 142                 news_class.idstr = "news";
 143                 news_class.uistr = "News";
 144
 145                 /* Folder functions */
 146                 news_class.new_folder = news_folder_new;
 147                 news_class.destroy_folder = news_folder_destroy;
 148
 149                 /* FolderItem functions */
 150                 news_class.item_get_path = news_item_get_path;
 151                 news_class.get_num_list = news_get_num_list;
 152                 news_class.scan_required = news_scan_required;
 153
 154                 /* Message functions */
 155                 news_class.get_msginfo = news_get_msginfo;
 156                 news_class.get_msginfos = news_get_msginfos;
 157                 news_class.fetch_msg = news_fetch_msg;
 158                 news_class.synchronise = news_synchronise;
 159         };
 160
 161         return &news_class;
 162 }
 163
 164 static Folder *news_folder_new(const gchar *name, const gchar *path)
 165 {
 166         Folder *folder;
 167
 168         folder = (Folder *)g_new0(NewsFolder, 1);
 169         folder->klass = &news_class;
 170         news_folder_init(folder, name, path);
 171
 172         return folder;
 173 }
 174
 175 static void news_folder_destroy(Folder *folder)
 176 {
 177         gchar *dir;
 178
 179         dir = news_folder_get_path(folder);
 180         if (is_dir_exist(dir))
 181                 remove_dir_recursive(dir);
 182         g_free(dir);
 183
 184         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 185 }
 186
 187 static void news_folder_init(Folder *folder, const gchar *name,
 188                              const gchar *path)
 189 {
 190         folder_remote_folder_init(folder, name, path);
 191 }
 192
 193 #if USE_OPENSSL
 194 static Session *news_session_new(const gchar *server, gushort port,
 195                                  const gchar *userid, const gchar *passwd,
 196                                  SSLType ssl_type)
 197 #else
 198 static Session *news_session_new(const gchar *server, gushort port,
 199                                  const gchar *userid, const gchar *passwd)
 200 #endif
 201 {
 202         gchar buf[NNTPBUFSIZE];
 203         Session *session;
 204
 205         g_return_val_if_fail(server != NULL, NULL);
 206
 207         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 208
 209 #if USE_OPENSSL
 210         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 211 #else
 212         session = nntp_session_new(server, port, buf, userid, passwd);
 213 #endif
 214
 215         return session;
 216 }
 217
 218 static Session *news_session_new_for_folder(Folder *folder)
 219 {
 220         Session *session;
 221         PrefsAccount *ac;
 222         const gchar *userid = NULL;
 223         gchar *passwd = NULL;
 224         gushort port;
 225         gchar buf[NNTPBUFSIZE];
 226
 227         g_return_val_if_fail(folder != NULL, NULL);
 228         g_return_val_if_fail(folder->account != NULL, NULL);
 229
 230         ac = folder->account;
 231         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 232                 userid = ac->userid;
 233                 if (ac->passwd && ac->passwd[0])
 234                         passwd = g_strdup(ac->passwd);
 235                 else
 236                         passwd = input_dialog_query_password(ac->nntp_server,
 237                                                              userid);
 238         }
 239
 240 #if USE_OPENSSL
 241         port = ac->set_nntpport ? ac->nntpport
 242                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 243         session = news_session_new(ac->nntp_server, port, userid, passwd,
 244                                    ac->ssl_nntp);
 245 #else
 246         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 247         session = news_session_new(ac->nntp_server, port, userid, passwd);
 248 #endif
 249         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 250                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 251
 252         g_free(passwd);
 253
 254         return session;
 255 }
 256
 257 static NNTPSession *news_session_get(Folder *folder)
 258 {
 259         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 260
 261         g_return_val_if_fail(folder != NULL, NULL);
 262         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 263         g_return_val_if_fail(folder->account != NULL, NULL);
 264
 265         if (prefs_common.work_offline && !news_gtk_should_override()) {
 266                 return NULL;
 267         }
 268
 269         if (!rfolder->session) {
 270                 rfolder->session = news_session_new_for_folder(folder);
 271                 return NNTP_SESSION(rfolder->session);
 272         }
 273
 274         if (time(NULL) - rfolder->session->last_access_time <
 275                 SESSION_TIMEOUT_INTERVAL) {
 276                 return NNTP_SESSION(rfolder->session);
 277         }
 278
 279         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 280             != NN_SUCCESS) {
 281                 log_warning(_("NNTP connection to %s:%d has been"
 282                               " disconnected. Reconnecting...\n"),
 283                             folder->account->nntp_server,
 284                             folder->account->set_nntpport ?
 285                             folder->account->nntpport : NNTP_PORT);
 286                 session_destroy(rfolder->session);
 287                 rfolder->session = news_session_new_for_folder(folder);
 288         }
 289
 290         if (rfolder->session)
 291                 session_set_access_time(rfolder->session);
 292
 293         return NNTP_SESSION(rfolder->session);
 294 }
 295
 296 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 297 {
 298         gchar *path, *filename;
 299         NNTPSession *session;
 300         gint ok;
 301
 302         g_return_val_if_fail(folder != NULL, NULL);
 303         g_return_val_if_fail(item != NULL, NULL);
 304
 305         path = folder_item_get_path(item);
 306         if (!is_dir_exist(path))
 307                 make_dir_hier(path);
 308         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 309         g_free(path);
 310
 311         if (is_file_exist(filename)) {
 312                 debug_print("article %d has been already cached.\n", num);
 313                 return filename;
 314         }
 315
 316         session = news_session_get(folder);
 317         if (!session) {
 318                 g_free(filename);
 319                 return NULL;
 320         }
 321
 322         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 323         if (ok != NN_SUCCESS) {
 324                 if (ok == NN_SOCKET) {
 325                         session_destroy(SESSION(session));
 326                         REMOTE_FOLDER(folder)->session = NULL;
 327                 }
 328                 g_free(filename);
 329                 return NULL;
 330         }
 331
 332         debug_print("getting article %d...\n", num);
 333         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 334                               num, filename);
 335         if (ok != NN_SUCCESS) {
 336                 g_warning("can't read article %d\n", num);
 337                 if (ok == NN_SOCKET) {
 338                         session_destroy(SESSION(session));
 339                         REMOTE_FOLDER(folder)->session = NULL;
 340                 }
 341                 g_free(filename);
 342                 return NULL;
 343         }
 344
 345         return filename;
 346 }
 347
 348 static NewsGroupInfo *news_group_info_new(const gchar *name,
 349                                           gint first, gint last, gchar type)
 350 {
 351         NewsGroupInfo *ginfo;
 352
 353         ginfo = g_new(NewsGroupInfo, 1);
 354         ginfo->name = g_strdup(name);
 355         ginfo->first = first;
 356         ginfo->last = last;
 357         ginfo->type = type;
 358
 359         return ginfo;
 360 }
 361
 362 static void news_group_info_free(NewsGroupInfo *ginfo)
 363 {
 364         g_free(ginfo->name);
 365         g_free(ginfo);
 366 }
 367
 368 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 369                                     NewsGroupInfo *ginfo2)
 370 {
 371         return g_ascii_strcasecmp(ginfo1->name, ginfo2->name);
 372 }
 373
 374 GSList *news_get_group_list(Folder *folder)
 375 {
 376         gchar *path, *filename;
 377         FILE *fp;
 378         GSList *list = NULL;
 379         GSList *last = NULL;
 380         gchar buf[NNTPBUFSIZE];
 381
 382         g_return_val_if_fail(folder != NULL, NULL);
 383         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 384
 385         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 386         if (!is_dir_exist(path))
 387                 make_dir_hier(path);
 388         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 389         g_free(path);
 390
 391         if ((fp = g_fopen(filename, "rb")) == NULL) {
 392                 NNTPSession *session;
 393                 gint ok;
 394
 395                 session = news_session_get(folder);
 396                 if (!session) {
 397                         g_free(filename);
 398                         return NULL;
 399                 }
 400
 401                 ok = nntp_list(session);
 402                 if (ok != NN_SUCCESS) {
 403                         if (ok == NN_SOCKET) {
 404                                 session_destroy(SESSION(session));
 405                                 REMOTE_FOLDER(folder)->session = NULL;
 406                         }
 407                         g_free(filename);
 408                         return NULL;
 409                 }
 410                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 411                         log_warning(_("can't retrieve newsgroup list\n"));
 412                         session_destroy(SESSION(session));
 413                         REMOTE_FOLDER(folder)->session = NULL;
 414                         g_free(filename);
 415                         return NULL;
 416                 }
 417
 418                 if ((fp = g_fopen(filename, "rb")) == NULL) {
 419                         FILE_OP_ERROR(filename, "fopen");
 420                         g_free(filename);
 421                         return NULL;
 422                 }
 423         }
 424
 425         while (fgets(buf, sizeof(buf), fp) != NULL) {
 426                 gchar *p = buf;
 427                 gchar *name;
 428                 gint last_num;
 429                 gint first_num;
 430                 gchar type;
 431                 NewsGroupInfo *ginfo;
 432
 433                 p = strchr(p, ' ');
 434                 if (!p) continue;
 435                 *p = '\0';
 436                 p++;
 437                 name = buf;
 438
 439                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 440                         continue;
 441
 442                 ginfo = news_group_info_new(name, first_num, last_num, type);
 443
 444                 if (!last)
 445                         last = list = g_slist_append(NULL, ginfo);
 446                 else {
 447                         last = g_slist_append(last, ginfo);
 448                         last = last->next;
 449                 }
 450         }
 451
 452         fclose(fp);
 453         g_free(filename);
 454
 455         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 456
 457         return list;
 458 }
 459
 460 void news_group_list_free(GSList *group_list)
 461 {
 462         GSList *cur;
 463
 464         if (!group_list) return;
 465
 466         for (cur = group_list; cur != NULL; cur = cur->next)
 467                 news_group_info_free((NewsGroupInfo *)cur->data);
 468         g_slist_free(group_list);
 469 }
 470
 471 void news_remove_group_list_cache(Folder *folder)
 472 {
 473         gchar *path, *filename;
 474
 475         g_return_if_fail(folder != NULL);
 476         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 477
 478         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 479         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 480         g_free(path);
 481
 482         if (is_file_exist(filename)) {
 483                 if (remove(filename) < 0)
 484                         FILE_OP_ERROR(filename, "remove");
 485         }
 486         g_free(filename);
 487 }
 488
 489 gint news_post(Folder *folder, const gchar *file)
 490 {
 491         FILE *fp;
 492         gint ok;
 493
 494         g_return_val_if_fail(folder != NULL, -1);
 495         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 496         g_return_val_if_fail(file != NULL, -1);
 497
 498         if ((fp = g_fopen(file, "rb")) == NULL) {
 499                 FILE_OP_ERROR(file, "fopen");
 500                 return -1;
 501         }
 502
 503         ok = news_post_stream(folder, fp);
 504
 505         fclose(fp);
 506
 507         return ok;
 508 }
 509
 510 gint news_post_stream(Folder *folder, FILE *fp)
 511 {
 512         NNTPSession *session;
 513         gint ok;
 514
 515         g_return_val_if_fail(folder != NULL, -1);
 516         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 517         g_return_val_if_fail(fp != NULL, -1);
 518
 519         session = news_session_get(folder);
 520         if (!session) return -1;
 521
 522         ok = nntp_post(session, fp);
 523         if (ok != NN_SUCCESS) {
 524                 log_warning(_("can't post article.\n"));
 525                 if (ok == NN_SOCKET) {
 526                         session_destroy(SESSION(session));
 527                         REMOTE_FOLDER(folder)->session = NULL;
 528                 }
 529                 return -1;
 530         }
 531
 532         return 0;
 533 }
 534
 535 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 536                                  gint num, gchar *filename)
 537 {
 538         gchar *msgid;
 539         gint ok;
 540
 541         ok = nntp_get_article(session, cmd, num, &msgid);
 542         if (ok != NN_SUCCESS)
 543                 return ok;
 544
 545         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 546         g_free(msgid);
 547
 548         ok = recv_write_to_file(SESSION(session)->sock, filename);
 549         if (ok < 0) {
 550                 log_warning(_("can't retrieve article %d\n"), num);
 551                 if (ok == -2)
 552                         return NN_SOCKET;
 553                 else
 554                         return NN_IOERR;
 555         }
 556
 557         return NN_SUCCESS;
 558 }
 559
 560 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 561 {
 562         return news_get_article_cmd(session, "ARTICLE", num, filename);
 563 }
 564
 565 /**
 566  * news_select_group:
 567  * @session: Active NNTP session.
 568  * @group: Newsgroup name.
 569  * @num: Estimated number of articles.
 570  * @first: First article number.
 571  * @last: Last article number.
 572  *
 573  * Select newsgroup @group with the GROUP command if it is not already
 574  * selected in @session, or article numbers need to be returned.
 575  *
 576  * Return value: NNTP result code.
 577  **/
 578 static gint news_select_group(NNTPSession *session, const gchar *group,
 579                               gint *num, gint *first, gint *last)
 580 {
 581         gint ok;
 582         gint num_, first_, last_;
 583
 584         if (!num || !first || !last) {
 585                 if (session->group && g_ascii_strcasecmp(session->group, group) == 0)
 586                         return NN_SUCCESS;
 587                 num = &num_;
 588                 first = &first_;
 589                 last = &last_;
 590         }
 591
 592         g_free(session->group);
 593         session->group = NULL;
 594
 595         ok = nntp_group(session, group, num, first, last);
 596         if (ok == NN_SUCCESS)
 597                 session->group = g_strdup(group);
 598         else
 599                 log_warning(_("can't select group: %s\n"), group);
 600
 601         return ok;
 602 }
 603
 604 #define PARSE_ONE_PARAM(p, srcp) \
 605 { \
 606         p = strchr(srcp, '\t'); \
 607         if (!p) return NULL; \
 608         else \
 609                 *p++ = '\0'; \
 610 }
 611
 612 static MsgInfo *news_parse_xover(const gchar *xover_str)
 613 {
 614         MsgInfo *msginfo;
 615         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 616         gchar *p;
 617         gint num, size_int, line_int;
 618         gchar *xover_buf;
 619
 620         Xstrdup_a(xover_buf, xover_str, return NULL);
 621
 622         PARSE_ONE_PARAM(subject, xover_buf);
 623         PARSE_ONE_PARAM(sender, subject);
 624         PARSE_ONE_PARAM(date, sender);
 625         PARSE_ONE_PARAM(msgid, date);
 626         PARSE_ONE_PARAM(ref, msgid);
 627         PARSE_ONE_PARAM(size, ref);
 628         PARSE_ONE_PARAM(line, size);
 629         /*
 630          * PARSE_ONE_PARAM(xref, line);
 631          *
 632          * if we parse extra headers we should first examine the
 633          * LIST OVERVIEW.FMT response from the server. See
 634          * RFC2980 for details
 635          */
 636
 637         tmp = strchr(line, '\t');
 638         if (!tmp) tmp = strchr(line, '\r');
 639         if (!tmp) tmp = strchr(line, '\n');
 640         if (tmp) *tmp = '\0';
 641
 642         num = atoi(xover_str);
 643         size_int = atoi(size);
 644         line_int = atoi(line);
 645
 646         /* set MsgInfo */
 647         msginfo = procmsg_msginfo_new();
 648         msginfo->msgnum = num;
 649         msginfo->size = size_int;
 650
 651         msginfo->date = g_strdup(date);
 652         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 653
 654         msginfo->from = conv_unmime_header(sender, NULL);
 655         msginfo->fromname = procheader_get_fromname(msginfo->from);
 656
 657         msginfo->subject = conv_unmime_header(subject, NULL);
 658
 659         if (msgid) {
 660                 extract_parenthesis(msgid, '<', '>');
 661                 remove_space(msgid);
 662                 if (*msgid != '\0')
 663                         msginfo->msgid = g_strdup(msgid);
 664         }
 665
 666         /* FIXME: this is a quick fix; references' meaning was changed
 667          * into having the actual list of references in the References: header.
 668          * We need a GSList here, so msginfo_free() and msginfo_copy() can do
 669          * their things properly. */
 670         if (ref && strlen(ref)) {
 671                 gchar **ref_tokens = g_strsplit(ref, " ", -1);
 672                 guint i = 0;
 673
 674                 while (ref_tokens[i]) {
 675                         gchar *cur_ref = ref_tokens[i];
 676                         msginfo->references = references_list_append(msginfo->references,
 677                                         g_strdup(cur_ref));
 678                         i++;
 679                 }
 680                 g_strfreev(ref_tokens);
 681
 682                 eliminate_parenthesis(ref, '(', ')');
 683                 if ((p = strrchr(ref, '<')) != NULL) {
 684                         extract_parenthesis(p, '<', '>');
 685                         remove_space(p);
 686                         if (*p != '\0')
 687                                 msginfo->inreplyto = g_strdup(p);
 688                 }
 689         }
 690
 691         /*
 692         msginfo->xref = g_strdup(xref);
 693         p = msginfo->xref+strlen(msginfo->xref) - 1;
 694         while (*p == '\r' || *p == '\n') {
 695                 *p = '\0';
 696                 p--;
 697         }
 698         */
 699
 700         return msginfo;
 701 }
 702
 703 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 704 {
 705         gchar *p;
 706         gchar *tmp;
 707         gint num;
 708
 709         p = strchr(xhdr_str, ' ');
 710         if (!p)
 711                 return NULL;
 712         else
 713                 p++;
 714
 715         num = atoi(xhdr_str);
 716         if (msginfo->msgnum != num) return NULL;
 717
 718         tmp = strchr(p, '\r');
 719         if (!tmp) tmp = strchr(p, '\n');
 720
 721         if (tmp)
 722                 return g_strndup(p, tmp - p);
 723         else
 724                 return g_strdup(p);
 725 }
 726
 727 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 728 {
 729         gchar * tmp;
 730         FILE * tmpfp;
 731         gchar buf[BUFFSIZE];
 732
 733         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 734                               G_DIR_SEPARATOR, (gint)msginfo);
 735         if (tmp == NULL)
 736                 return -1;
 737
 738         if ((tmpfp = g_fopen(tmp, "wb")) == NULL) {
 739                 FILE_OP_ERROR(tmp, "fopen");
 740                 return -1;
 741         }
 742         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 743                 FILE_OP_ERROR(tmp, "chmod");
 744                 g_warning("can't change file mode\n");
 745         }
 746
 747         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 748         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 749         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 750         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 751         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 752         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 753         get_rfc822_date(buf, sizeof(buf));
 754         fprintf(tmpfp, "Date: %s\r\n", buf);
 755         fprintf(tmpfp, "\r\n");
 756         fprintf(tmpfp, "removed with sylpheed\r\n");
 757
 758         fclose(tmpfp);
 759
 760         news_post(folder, tmp);
 761         remove(tmp);
 762
 763         g_free(tmp);
 764
 765         return 0;
 766 }
 767
 768 static gchar *news_folder_get_path(Folder *folder)
 769 {
 770         gchar *folder_path;
 771
 772         g_return_val_if_fail(folder->account != NULL, NULL);
 773
 774         folder_path = g_strconcat(get_news_cache_dir(),
 775                                   G_DIR_SEPARATOR_S,
 776                                   folder->account->nntp_server,
 777                                   NULL);
 778         return folder_path;
 779 }
 780
 781 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 782 {
 783         gchar *folder_path, *path;
 784
 785         g_return_val_if_fail(folder != NULL, NULL);
 786         g_return_val_if_fail(item != NULL, NULL);
 787         folder_path = news_folder_get_path(folder);
 788
 789         g_return_val_if_fail(folder_path != NULL, NULL);
 790         if (folder_path[0] == G_DIR_SEPARATOR) {
 791                 if (item->path)
 792                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 793                                            item->path, NULL);
 794                 else
 795                         path = g_strdup(folder_path);
 796         } else {
 797                 if (item->path)
 798                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 799                                            folder_path, G_DIR_SEPARATOR_S,
 800                                            item->path, NULL);
 801                 else
 802                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 803                                            folder_path, NULL);
 804         }
 805         g_free(folder_path);
 806
 807         return path;
 808 }
 809
 810 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 811 {
 812         NNTPSession *session;
 813         gint i, ok, num, first, last, nummsgs = 0;
 814         gchar *dir;
 815
 816         g_return_val_if_fail(item != NULL, -1);
 817         g_return_val_if_fail(item->folder != NULL, -1);
 818         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 819
 820         session = news_session_get(folder);
 821         g_return_val_if_fail(session != NULL, -1);
 822
 823         *old_uids_valid = TRUE;
 824
 825         ok = news_select_group(session, item->path, &num, &first, &last);
 826         if (ok != NN_SUCCESS) {
 827                 log_warning(_("can't set group: %s\n"), item->path);
 828                 return -1;
 829         }
 830
 831         dir = news_folder_get_path(folder);
 832         if (num <= 0)
 833                 remove_all_numbered_files(dir);
 834         else if (last < first)
 835                 log_warning(_("invalid article range: %d - %d\n"),
 836                             first, last);
 837         else {
 838                 for (i = first; i <= last; i++) {
 839                         *msgnum_list = g_slist_prepend(*msgnum_list,
 840                                                        GINT_TO_POINTER(i));
 841                         nummsgs++;
 842                 }
 843                 debug_print("removing old messages from %d to %d in %s\n",
 844                             first, last, dir);
 845                 remove_numbered_files(dir, 1, first - 1);
 846         }
 847         g_free(dir);
 848
 849         return nummsgs;
 850 }
 851
 852 #define READ_TO_LISTEND(hdr) \
 853         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 854                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 855                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 856                         return msginfo; \
 857                 } \
 858         }
 859
 860 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 861 {
 862         NNTPSession *session;
 863         MsgInfo *msginfo = NULL;
 864         gchar buf[NNTPBUFSIZE];
 865         gint ok;
 866
 867         session = news_session_get(folder);
 868         g_return_val_if_fail(session != NULL, NULL);
 869         g_return_val_if_fail(item != NULL, NULL);
 870         g_return_val_if_fail(item->folder != NULL, NULL);
 871         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 872
 873         log_message(_("getting xover %d in %s...\n"),
 874                     num, item->path);
 875         ok = nntp_xover(session, num, num);
 876         if (ok != NN_SUCCESS) {
 877                 log_warning(_("can't get xover\n"));
 878                 if (ok == NN_SOCKET) {
 879                         session_destroy(SESSION(session));
 880                         REMOTE_FOLDER(item->folder)->session = NULL;
 881                 }
 882                 return NULL;
 883         }
 884
 885         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 886                 log_warning(_("error occurred while getting xover.\n"));
 887                 return NULL;
 888         }
 889
 890         msginfo = news_parse_xover(buf);
 891         if (!msginfo) {
 892                 log_warning(_("invalid xover line: %s\n"), buf);
 893         }
 894
 895         READ_TO_LISTEND("xover");
 896
 897         if(!msginfo)
 898                 return NULL;
 899
 900         msginfo->folder = item;
 901         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 902         msginfo->flags.tmp_flags = MSG_NEWS;
 903         msginfo->newsgroups = g_strdup(item->path);
 904
 905         ok = nntp_xhdr(session, "to", num, num);
 906         if (ok != NN_SUCCESS) {
 907                 log_warning(_("can't get xhdr\n"));
 908                 if (ok == NN_SOCKET) {
 909                         session_destroy(SESSION(session));
 910                         REMOTE_FOLDER(item->folder)->session = NULL;
 911                 }
 912                 return msginfo;
 913         }
 914
 915         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 916                 log_warning(_("error occurred while getting xhdr.\n"));
 917                 return msginfo;
 918         }
 919
 920         msginfo->to = news_parse_xhdr(buf, msginfo);
 921
 922         READ_TO_LISTEND("xhdr (to)");
 923
 924         ok = nntp_xhdr(session, "cc", num, num);
 925         if (ok != NN_SUCCESS) {
 926                 log_warning(_("can't get xhdr\n"));
 927                 if (ok == NN_SOCKET) {
 928                         session_destroy(SESSION(session));
 929                         REMOTE_FOLDER(item->folder)->session = NULL;
 930                 }
 931                 return msginfo;
 932         }
 933
 934         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 935                 log_warning(_("error occurred while getting xhdr.\n"));
 936                 return msginfo;
 937         }
 938
 939         msginfo->cc = news_parse_xhdr(buf, msginfo);
 940
 941         READ_TO_LISTEND("xhdr (cc)");
 942
 943         return msginfo;
 944 }
 945
 946 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 947 {
 948         gchar buf[NNTPBUFSIZE];
 949         GSList *newlist = NULL;
 950         GSList *llast = NULL;
 951         MsgInfo *msginfo;
 952         guint count = 0, lines = (end - begin + 2) * 3;
 953         gint ok;
 954
 955         g_return_val_if_fail(session != NULL, NULL);
 956         g_return_val_if_fail(item != NULL, NULL);
 957
 958         log_message(_("getting xover %d - %d in %s...\n"),
 959                     begin, end, item->path);
 960         ok = nntp_xover(session, begin, end);
 961         if (ok != NN_SUCCESS) {
 962                 log_warning(_("can't get xover\n"));
 963                 if (ok == NN_SOCKET) {
 964                         session_destroy(SESSION(session));
 965                         REMOTE_FOLDER(item->folder)->session = NULL;
 966                 }
 967                 return NULL;
 968         }
 969
 970         for (;;) {
 971                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 972                         log_warning(_("error occurred while getting xover.\n"));
 973                         return newlist;
 974                 }
 975                 count++;
 976                 progressindicator_set_percentage
 977                         (PROGRESS_TYPE_NETWORK,
 978                          session->fetch_base_percentage +
 979                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 980
 981                 if (buf[0] == '.' && buf[1] == '\r') break;
 982
 983                 msginfo = news_parse_xover(buf);
 984                 if (!msginfo) {
 985                         log_warning(_("invalid xover line: %s\n"), buf);
 986                         continue;
 987                 }
 988
 989                 msginfo->folder = item;
 990                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 991                 msginfo->flags.tmp_flags = MSG_NEWS;
 992                 msginfo->newsgroups = g_strdup(item->path);
 993
 994                 if (!newlist)
 995                         llast = newlist = g_slist_append(newlist, msginfo);
 996                 else {
 997                         llast = g_slist_append(llast, msginfo);
 998                         llast = llast->next;
 999                 }
1000         }
1001
1002         ok = nntp_xhdr(session, "to", begin, end);
1003         if (ok != NN_SUCCESS) {
1004                 log_warning(_("can't get xhdr\n"));
1005                 if (ok == NN_SOCKET) {
1006                         session_destroy(SESSION(session));
1007                         REMOTE_FOLDER(item->folder)->session = NULL;
1008                 }
1009                 return newlist;
1010         }
1011
1012         llast = newlist;
1013
1014         for (;;) {
1015                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1016                         log_warning(_("error occurred while getting xhdr.\n"));
1017                         return newlist;
1018                 }
1019                 count++;
1020                 progressindicator_set_percentage
1021                         (PROGRESS_TYPE_NETWORK,
1022                          session->fetch_base_percentage +
1023                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1024
1025                 if (buf[0] == '.' && buf[1] == '\r') break;
1026                 if (!llast) {
1027                         g_warning("llast == NULL\n");
1028                         continue;
1029                 }
1030
1031                 msginfo = (MsgInfo *)llast->data;
1032                 msginfo->to = news_parse_xhdr(buf, msginfo);
1033
1034                 llast = llast->next;
1035         }
1036
1037         ok = nntp_xhdr(session, "cc", begin, end);
1038         if (ok != NN_SUCCESS) {
1039                 log_warning(_("can't get xhdr\n"));
1040                 if (ok == NN_SOCKET) {
1041                         session_destroy(SESSION(session));
1042                         REMOTE_FOLDER(item->folder)->session = NULL;
1043                 }
1044                 return newlist;
1045         }
1046
1047         llast = newlist;
1048
1049         for (;;) {
1050                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1051                         log_warning(_("error occurred while getting xhdr.\n"));
1052                         return newlist;
1053                 }
1054                 count++;
1055                 progressindicator_set_percentage
1056                         (PROGRESS_TYPE_NETWORK,
1057                          session->fetch_base_percentage +
1058                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1059
1060                 if (buf[0] == '.' && buf[1] == '\r') break;
1061                 if (!llast) {
1062                         g_warning("llast == NULL\n");
1063                         continue;
1064                 }
1065
1066                 msginfo = (MsgInfo *)llast->data;
1067                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1068
1069                 llast = llast->next;
1070         }
1071
1072         session_set_access_time(SESSION(session));
1073
1074         return newlist;
1075 }
1076
1077 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1078 {
1079         NNTPSession *session;
1080         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1081         guint first, last, next;
1082         guint tofetch, fetched;
1083
1084         g_return_val_if_fail(folder != NULL, NULL);
1085         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1086         g_return_val_if_fail(msgnum_list != NULL, NULL);
1087         g_return_val_if_fail(item != NULL, NULL);
1088
1089         session = news_session_get(folder);
1090         g_return_val_if_fail(session != NULL, NULL);
1091
1092         tmp_msgnum_list = g_slist_copy(msgnum_list);
1093         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1094
1095         progressindicator_start(PROGRESS_TYPE_NETWORK);
1096         tofetch = g_slist_length(tmp_msgnum_list);
1097         fetched = 0;
1098
1099         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1100         last = first;
1101         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1102                 next = GPOINTER_TO_INT(elem->data);
1103                 if(next != (last + 1)) {
1104                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1105                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1106                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1107                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1108                         fetched = last - first + 1;
1109                         first = next;
1110                 }
1111                 last = next;
1112         }
1113         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1114         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1115         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1116         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1117
1118         g_slist_free(tmp_msgnum_list);
1119
1120         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1121
1122         return msginfo_list;
1123 }
1124
1125 gboolean news_scan_required(Folder *folder, FolderItem *item)
1126 {
1127         return TRUE;
1128 }
1129
1130 void news_synchronise(FolderItem *item)
1131 {
1132         news_gtk_synchronise(item);
1133 }