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