src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2002 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <time.h>
  33
  34 #include "intl.h"
  35 #include "news.h"
  36 #include "nntp.h"
  37 #include "socket.h"
  38 #include "recv.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "folder.h"
  42 #include "session.h"
  43 #include "statusbar.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47 #include "prefs_account.h"
  48 #include "inputdialog.h"
  49 #include "log.h"
  50 #include "progressindicator.h"
  51 #if USE_OPENSSL
  52 #  include "ssl.h"
  53 #endif
  54
  55 #define NNTP_PORT       119
  56 #if USE_OPENSSL
  57 #define NNTPS_PORT      563
  58 #endif
  59
  60 static void news_folder_init             (Folder        *folder,
  61                                           const gchar   *name,
  62                                           const gchar   *path);
  63
  64 #if USE_OPENSSL
  65 static Session *news_session_new         (const gchar   *server,
  66                                           gushort        port,
  67                                           const gchar   *userid,
  68                                           const gchar   *passwd,
  69                                           SSLType        ssl_type);
  70 #else
  71 static Session *news_session_new         (const gchar   *server,
  72                                           gushort        port,
  73                                           const gchar   *userid,
  74                                           const gchar   *passwd);
  75 #endif
  76
  77 static gint news_get_article_cmd         (NNTPSession   *session,
  78                                           const gchar   *cmd,
  79                                           gint           num,
  80                                           gchar         *filename);
  81 static gint news_get_article             (NNTPSession   *session,
  82                                           gint           num,
  83                                           gchar         *filename);
  84
  85 static gint news_select_group            (NNTPSession   *session,
  86                                           const gchar   *group,
  87                                           gint          *num,
  88                                           gint          *first,
  89                                           gint          *last);
  90 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  91 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  92                                           MsgInfo       *msginfo);
  93 static gint news_remove_msg              (Folder        *folder,
  94                                           FolderItem    *item,
  95                                           gint           num);
  96 gint news_get_num_list                   (Folder        *folder,
  97                                           FolderItem    *item,
  98                                           GSList       **list);
  99 MsgInfo *news_get_msginfo                (Folder        *folder,
 100                                           FolderItem    *item,
 101                                           gint           num);
 102 GSList *news_get_msginfos                (Folder        *folder,
 103                                           FolderItem    *item,
 104                                           GSList        *msgnum_list);
 105
 106 gint news_post_stream                    (Folder        *folder,
 107                                           FILE          *fp);
 108
 109 FolderClass news_class =
 110 {
 111         F_NEWS,
 112         "news",
 113
 114         NULL,
 115         NULL,
 116         news_fetch_msg,
 117         news_get_msginfo,
 118         news_get_msginfos,
 119         NULL,
 120         NULL,
 121         NULL,
 122         NULL,
 123         NULL,
 124         news_remove_msg,
 125         NULL,
 126         NULL,
 127         NULL,
 128         NULL,
 129         news_get_num_list,
 130         NULL,
 131         NULL,
 132         NULL,
 133         NULL,
 134         NULL,
 135         news_folder_destroy,
 136         NULL,
 137         NULL,
 138         NULL,
 139         NULL,
 140         NULL,
 141 };
 142
 143 Folder *news_folder_new(const gchar *name, const gchar *path)
 144 {
 145         Folder *folder;
 146
 147         folder = (Folder *)g_new0(NewsFolder, 1);
 148         folder->class = &news_class;
 149         news_folder_init(folder, name, path);
 150
 151         return folder;
 152 }
 153
 154 void news_folder_destroy(Folder *folder)
 155 {
 156         gchar *dir;
 157
 158         dir = folder_get_path(folder);
 159         if (is_dir_exist(dir))
 160                 remove_dir_recursive(dir);
 161         g_free(dir);
 162
 163         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 164 }
 165
 166 static void news_folder_init(Folder *folder, const gchar *name,
 167                              const gchar *path)
 168 {
 169         folder_remote_folder_init(folder, name, path);
 170 }
 171
 172 #if USE_OPENSSL
 173 static Session *news_session_new(const gchar *server, gushort port,
 174                                  const gchar *userid, const gchar *passwd,
 175                                  SSLType ssl_type)
 176 #else
 177 static Session *news_session_new(const gchar *server, gushort port,
 178                                  const gchar *userid, const gchar *passwd)
 179 #endif
 180 {
 181         gchar buf[NNTPBUFSIZE];
 182         NNTPSession *session;
 183         NNTPSockInfo *nntp_sock;
 184
 185         g_return_val_if_fail(server != NULL, NULL);
 186
 187         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 188
 189 #if USE_OPENSSL
 190         if (userid && passwd)
 191                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd,
 192                                            ssl_type);
 193         else
 194                 nntp_sock = nntp_open(server, port, buf, ssl_type);
 195 #else
 196         if (userid && passwd)
 197                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
 198         else
 199                 nntp_sock = nntp_open(server, port, buf);
 200 #endif
 201
 202         if (nntp_sock == NULL)
 203                 return NULL;
 204
 205         session = g_new(NNTPSession, 1);
 206         SESSION(session)->type             = SESSION_NEWS;
 207         SESSION(session)->server           = g_strdup(server);
 208         session->nntp_sock                 = nntp_sock;
 209         SESSION(session)->sock             = nntp_sock->sock;
 210         SESSION(session)->connected        = TRUE;
 211         SESSION(session)->phase            = SESSION_READY;
 212         SESSION(session)->last_access_time = time(NULL);
 213         SESSION(session)->data             = NULL;
 214
 215         SESSION(session)->destroy          = news_session_destroy;
 216
 217         session->group = NULL;
 218
 219         return SESSION(session);
 220 }
 221
 222 void news_session_destroy(Session *session)
 223 {
 224         nntp_close(NNTP_SESSION(session)->nntp_sock);
 225         NNTP_SESSION(session)->nntp_sock = NULL;
 226         session->sock = NULL;
 227
 228         g_free(NNTP_SESSION(session)->group);
 229 }
 230
 231 static Session *news_session_new_for_folder(Folder *folder)
 232 {
 233         Session *session;
 234         PrefsAccount *ac;
 235         const gchar *userid = NULL;
 236         gchar *passwd = NULL;
 237         gushort port;
 238         gchar buf[NNTPBUFSIZE];
 239
 240         g_return_val_if_fail(folder != NULL, NULL);
 241         g_return_val_if_fail(folder->account != NULL, NULL);
 242
 243         ac = folder->account;
 244         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 245                 userid = ac->userid;
 246                 if (ac->passwd && ac->passwd[0])
 247                         passwd = g_strdup(ac->passwd);
 248                 else
 249                         passwd = input_dialog_query_password(ac->nntp_server,
 250                                                              userid);
 251         }
 252
 253 #if USE_OPENSSL
 254         port = ac->set_nntpport ? ac->nntpport
 255                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 256         session = news_session_new(ac->nntp_server, port, userid, passwd,
 257                                    ac->ssl_nntp);
 258 #else
 259         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 260         session = news_session_new(ac->nntp_server, port, userid, passwd);
 261 #endif
 262         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 263                 nntp_forceauth(NNTP_SESSION(session)->nntp_sock, buf, userid, passwd);
 264
 265         g_free(passwd);
 266
 267         return session;
 268 }
 269
 270 NNTPSession *news_session_get(Folder *folder)
 271 {
 272         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 273
 274         g_return_val_if_fail(folder != NULL, NULL);
 275         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, NULL);
 276         g_return_val_if_fail(folder->account != NULL, NULL);
 277
 278         if (!rfolder->session) {
 279                 rfolder->session = news_session_new_for_folder(folder);
 280                 return NNTP_SESSION(rfolder->session);
 281         }
 282
 283         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 284                 rfolder->session->last_access_time = time(NULL);
 285                 return NNTP_SESSION(rfolder->session);
 286         }
 287
 288         if (nntp_mode(NNTP_SESSION(rfolder->session)->nntp_sock, FALSE)
 289             != NN_SUCCESS) {
 290                 log_warning("NNTP connection to %s:%d has been"
 291                               " disconnected. Reconnecting...\n",
 292                             folder->account->nntp_server,
 293                             folder->account->set_nntpport ?
 294                             folder->account->nntpport : NNTP_PORT);
 295                 session_destroy(rfolder->session);
 296                 rfolder->session = news_session_new_for_folder(folder);
 297         }
 298
 299         if (rfolder->session)
 300                 rfolder->session->last_access_time = time(NULL);
 301         return NNTP_SESSION(rfolder->session);
 302 }
 303
 304 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 305 {
 306         gchar *path, *filename;
 307         NNTPSession *session;
 308         gint ok;
 309
 310         g_return_val_if_fail(folder != NULL, NULL);
 311         g_return_val_if_fail(item != NULL, NULL);
 312
 313         path = folder_item_get_path(item);
 314         if (!is_dir_exist(path))
 315                 make_dir_hier(path);
 316         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 317         g_free(path);
 318
 319         if (is_file_exist(filename)) {
 320                 debug_print("article %d has been already cached.\n", num);
 321                 return filename;
 322         }
 323
 324         session = news_session_get(folder);
 325         if (!session) {
 326                 g_free(filename);
 327                 return NULL;
 328         }
 329
 330         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 331         if (ok != NN_SUCCESS) {
 332                 g_warning("can't select group %s\n", item->path);
 333                 g_free(filename);
 334                 return NULL;
 335         }
 336
 337         debug_print("getting article %d...\n", num);
 338         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 339                               num, filename);
 340         if (ok < 0) {
 341                 g_warning("can't read article %d\n", num);
 342                 session_destroy(SESSION(session));
 343                 REMOTE_FOLDER(folder)->session = NULL;
 344                 g_free(filename);
 345                 return NULL;
 346         }
 347
 348         return filename;
 349 }
 350
 351 gint news_scan_group(Folder *folder, FolderItem *item)
 352 {
 353         NNTPSession *session;
 354         gint num = 0, first = 0, last = 0;
 355         gint ok;
 356
 357         g_return_val_if_fail(folder != NULL, -1);
 358         g_return_val_if_fail(item != NULL, -1);
 359
 360         session = news_session_get(folder);
 361         if (!session) return -1;
 362
 363         ok = news_select_group(session, item->path, &num, &first, &last);
 364         if (ok != NN_SUCCESS) {
 365                 log_warning("can't set group: %s\n", item->path);
 366                 return -1;
 367         }
 368
 369         if (num == 0) {
 370                 item->new = item->unread = item->total = item->last_num = 0;
 371                 return 0;
 372         }
 373
 374 /*
 375         path = folder_item_get_path(item);
 376         if (path && is_dir_exist(path)) {
 377                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 378                                      first);
 379         }
 380         g_free(path);
 381
 382         if (max < first || last < min)
 383                 new = unread = total = num;
 384         else {
 385                 if (min < first)
 386                         min = first;
 387
 388                 if (last < max)
 389                         max = last;
 390                 else if (max < last) {
 391                         new += last - max;
 392                         unread += last - max;
 393                 }
 394
 395                 if (new > num) new = num;
 396                 if (unread > num) unread = num;
 397         }
 398
 399         item->new = new;
 400         item->unread = unread;
 401         item->total = num;
 402         item->last_num = last;
 403 */
 404         return 0;
 405 }
 406
 407 static NewsGroupInfo *news_group_info_new(const gchar *name,
 408                                           gint first, gint last, gchar type)
 409 {
 410         NewsGroupInfo *ginfo;
 411
 412         ginfo = g_new(NewsGroupInfo, 1);
 413         ginfo->name = g_strdup(name);
 414         ginfo->first = first;
 415         ginfo->last = last;
 416         ginfo->type = type;
 417
 418         return ginfo;
 419 }
 420
 421 static void news_group_info_free(NewsGroupInfo *ginfo)
 422 {
 423         g_free(ginfo->name);
 424         g_free(ginfo);
 425 }
 426
 427 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 428                                     NewsGroupInfo *ginfo2)
 429 {
 430         return g_strcasecmp(ginfo1->name, ginfo2->name);
 431 }
 432
 433 GSList *news_get_group_list(Folder *folder)
 434 {
 435         gchar *path, *filename;
 436         FILE *fp;
 437         GSList *list = NULL;
 438         GSList *last = NULL;
 439         gchar buf[NNTPBUFSIZE];
 440
 441         g_return_val_if_fail(folder != NULL, NULL);
 442         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, NULL);
 443
 444         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 445         if (!is_dir_exist(path))
 446                 make_dir_hier(path);
 447         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 448         g_free(path);
 449
 450         if ((fp = fopen(filename, "rb")) == NULL) {
 451                 NNTPSession *session;
 452
 453                 session = news_session_get(folder);
 454                 if (!session) {
 455                         g_free(filename);
 456                         return NULL;
 457                 }
 458
 459                 if (nntp_list(session->nntp_sock) != NN_SUCCESS) {
 460                         g_free(filename);
 461                         return NULL;
 462                 }
 463                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 464                         log_warning("can't retrieve newsgroup list\n");
 465                         session_destroy(SESSION(session));
 466                         REMOTE_FOLDER(folder)->session = NULL;
 467                         g_free(filename);
 468                         return NULL;
 469                 }
 470
 471                 if ((fp = fopen(filename, "rb")) == NULL) {
 472                         FILE_OP_ERROR(filename, "fopen");
 473                         g_free(filename);
 474                         return NULL;
 475                 }
 476         }
 477
 478         while (fgets(buf, sizeof(buf), fp) != NULL) {
 479                 gchar *p = buf;
 480                 gchar *name;
 481                 gint last_num;
 482                 gint first_num;
 483                 gchar type;
 484                 NewsGroupInfo *ginfo;
 485
 486                 p = strchr(p, ' ');
 487                 if (!p) continue;
 488                 *p = '\0';
 489                 p++;
 490                 name = buf;
 491
 492                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 493                         continue;
 494
 495                 ginfo = news_group_info_new(name, first_num, last_num, type);
 496
 497                 if (!last)
 498                         last = list = g_slist_append(NULL, ginfo);
 499                 else {
 500                         last = g_slist_append(last, ginfo);
 501                         last = last->next;
 502                 }
 503         }
 504
 505         fclose(fp);
 506         g_free(filename);
 507
 508         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 509
 510         return list;
 511 }
 512
 513 void news_group_list_free(GSList *group_list)
 514 {
 515         GSList *cur;
 516
 517         if (!group_list) return;
 518
 519         for (cur = group_list; cur != NULL; cur = cur->next)
 520                 news_group_info_free((NewsGroupInfo *)cur->data);
 521         g_slist_free(group_list);
 522 }
 523
 524 void news_remove_group_list_cache(Folder *folder)
 525 {
 526         gchar *path, *filename;
 527
 528         g_return_if_fail(folder != NULL);
 529         g_return_if_fail(FOLDER_TYPE(folder) == F_NEWS);
 530
 531         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 532         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 533         g_free(path);
 534
 535         if (is_file_exist(filename)) {
 536                 if (remove(filename) < 0)
 537                         FILE_OP_ERROR(filename, "remove");
 538         }
 539         g_free(filename);
 540 }
 541
 542 gint news_post(Folder *folder, const gchar *file)
 543 {
 544         FILE *fp;
 545         gint ok;
 546
 547         g_return_val_if_fail(folder != NULL, -1);
 548         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, -1);
 549         g_return_val_if_fail(file != NULL, -1);
 550
 551         if ((fp = fopen(file, "rb")) == NULL) {
 552                 FILE_OP_ERROR(file, "fopen");
 553                 return -1;
 554         }
 555
 556         ok = news_post_stream(folder, fp);
 557
 558         fclose(fp);
 559
 560         return ok;
 561 }
 562
 563 gint news_post_stream(Folder *folder, FILE *fp)
 564 {
 565         NNTPSession *session;
 566         gint ok;
 567
 568         g_return_val_if_fail(folder != NULL, -1);
 569         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, -1);
 570         g_return_val_if_fail(fp != NULL, -1);
 571
 572         session = news_session_get(folder);
 573         if (!session) return -1;
 574
 575         ok = nntp_post(session->nntp_sock, fp);
 576         if (ok != NN_SUCCESS) {
 577                 log_warning("can't post article.\n");
 578                 return -1;
 579         }
 580
 581         return 0;
 582 }
 583
 584 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 585                                  gint num, gchar *filename)
 586 {
 587         gchar *msgid;
 588
 589         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 590             != NN_SUCCESS)
 591                 return -1;
 592
 593         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 594         g_free(msgid);
 595
 596         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 597                 log_warning("can't retrieve article %d\n", num);
 598                 return -1;
 599         }
 600
 601         return 0;
 602 }
 603
 604 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 605 {
 606         gchar * dir;
 607         gint r;
 608
 609         dir = folder_item_get_path(item);
 610         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 611         r = remove_numbered_files(dir, num, num);
 612         g_free(dir);
 613
 614         return r;
 615 }
 616
 617 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 618 {
 619         return news_get_article_cmd(session, "ARTICLE", num, filename);
 620 }
 621
 622 /**
 623  * news_select_group:
 624  * @session: Active NNTP session.
 625  * @group: Newsgroup name.
 626  * @num: Estimated number of articles.
 627  * @first: First article number.
 628  * @last: Last article number.
 629  *
 630  * Select newsgroup @group with the GROUP command if it is not already
 631  * selected in @session, or article numbers need to be returned.
 632  *
 633  * Return value: NNTP result code.
 634  **/
 635 static gint news_select_group(NNTPSession *session, const gchar *group,
 636                               gint *num, gint *first, gint *last)
 637 {
 638         gint ok;
 639         gint num_, first_, last_;
 640
 641         if (!num || !first || !last) {
 642                 if (session->group && g_strcasecmp(session->group, group) == 0)
 643                         return NN_SUCCESS;
 644                 num = &num_;
 645                 first = &first_;
 646                 last = &last_;
 647         }
 648
 649         g_free(session->group);
 650         session->group = NULL;
 651
 652         ok = nntp_group(session->nntp_sock, group, num, first, last);
 653         if (ok == NN_SUCCESS)
 654                 session->group = g_strdup(group);
 655
 656         return ok;
 657 }
 658
 659 #define PARSE_ONE_PARAM(p, srcp) \
 660 { \
 661         p = strchr(srcp, '\t'); \
 662         if (!p) return NULL; \
 663         else \
 664                 *p++ = '\0'; \
 665 }
 666
 667 static MsgInfo *news_parse_xover(const gchar *xover_str)
 668 {
 669         MsgInfo *msginfo;
 670         gchar buf[NNTPBUFSIZE];
 671         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 672         gchar *p;
 673         gint num, size_int, line_int;
 674         gchar *xover_buf;
 675
 676         Xstrdup_a(xover_buf, xover_str, return NULL);
 677
 678         PARSE_ONE_PARAM(subject, xover_buf);
 679         PARSE_ONE_PARAM(sender, subject);
 680         PARSE_ONE_PARAM(date, sender);
 681         PARSE_ONE_PARAM(msgid, date);
 682         PARSE_ONE_PARAM(ref, msgid);
 683         PARSE_ONE_PARAM(size, ref);
 684         PARSE_ONE_PARAM(line, size);
 685         PARSE_ONE_PARAM(xref, line);
 686
 687         tmp = strchr(xref, '\t');
 688         if (!tmp) tmp = strchr(line, '\r');
 689         if (!tmp) tmp = strchr(line, '\n');
 690         if (tmp) *tmp = '\0';
 691
 692         num = atoi(xover_str);
 693         size_int = atoi(size);
 694         line_int = atoi(line);
 695
 696         /* set MsgInfo */
 697         msginfo = procmsg_msginfo_new();
 698         msginfo->msgnum = num;
 699         msginfo->size = size_int;
 700
 701         msginfo->date = g_strdup(date);
 702         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 703
 704         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 705         msginfo->from = g_strdup(buf);
 706         msginfo->fromname = procheader_get_fromname(buf);
 707
 708         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 709         msginfo->subject = g_strdup(buf);
 710
 711         extract_parenthesis(msgid, '<', '>');
 712         remove_space(msgid);
 713         if (*msgid != '\0')
 714                 msginfo->msgid = g_strdup(msgid);
 715
 716         msginfo->references = g_strdup(ref);
 717         eliminate_parenthesis(ref, '(', ')');
 718         if ((p = strrchr(ref, '<')) != NULL) {
 719                 extract_parenthesis(p, '<', '>');
 720                 remove_space(p);
 721                 if (*p != '\0')
 722                         msginfo->inreplyto = g_strdup(p);
 723         }
 724
 725         msginfo->xref = g_strdup(xref);
 726         p = msginfo->xref+strlen(msginfo->xref) - 1;
 727         while (*p == '\r' || *p == '\n') {
 728                 *p = '\0';
 729                 p--;
 730         }
 731
 732         return msginfo;
 733 }
 734
 735 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 736 {
 737         gchar *p;
 738         gchar *tmp;
 739         gint num;
 740
 741         p = strchr(xhdr_str, ' ');
 742         if (!p)
 743                 return NULL;
 744         else
 745                 p++;
 746
 747         num = atoi(xhdr_str);
 748         if (msginfo->msgnum != num) return NULL;
 749
 750         tmp = strchr(p, '\r');
 751         if (!tmp) tmp = strchr(p, '\n');
 752
 753         if (tmp)
 754                 return g_strndup(p, tmp - p);
 755         else
 756                 return g_strdup(p);
 757 }
 758
 759 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 760 {
 761         gchar * tmp;
 762         FILE * tmpfp;
 763         gchar buf[BUFFSIZE];
 764
 765         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 766                               G_DIR_SEPARATOR, (gint)msginfo);
 767         if (tmp == NULL)
 768                 return -1;
 769
 770         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 771                 FILE_OP_ERROR(tmp, "fopen");
 772                 return -1;
 773         }
 774         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 775                 FILE_OP_ERROR(tmp, "chmod");
 776                 g_warning("can't change file mode\n");
 777         }
 778
 779         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 780         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 781         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 782         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 783         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 784         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 785         get_rfc822_date(buf, sizeof(buf));
 786         fprintf(tmpfp, "Date: %s\r\n", buf);
 787         fprintf(tmpfp, "\r\n");
 788         fprintf(tmpfp, "removed with sylpheed\r\n");
 789
 790         fclose(tmpfp);
 791
 792         news_post(folder, tmp);
 793         remove(tmp);
 794
 795         g_free(tmp);
 796
 797         return 0;
 798 }
 799
 800 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 801 {
 802         NNTPSession *session;
 803         gint i, ok, num, first, last, nummsgs = 0;
 804         gchar *dir;
 805
 806         g_return_val_if_fail(item != NULL, -1);
 807         g_return_val_if_fail(item->folder != NULL, -1);
 808         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, -1);
 809
 810         session = news_session_get(folder);
 811         g_return_val_if_fail(session != NULL, -1);
 812
 813         ok = news_select_group(session, item->path, &num, &first, &last);
 814         if (ok != NN_SUCCESS) {
 815                 log_warning(_("can't set group: %s\n"), item->path);
 816                 return -1;
 817         }
 818
 819         if(last < first) {
 820                 log_warning(_("invalid article range: %d - %d\n"),
 821                             first, last);
 822                 return 0;
 823         }
 824
 825         for(i = first; i <= last; i++) {
 826                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 827                 nummsgs++;
 828         }
 829
 830         dir = folder_item_get_path(item);
 831         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 832         remove_numbered_files(dir, 1, first - 1);
 833         g_free(dir);
 834
 835         return nummsgs;
 836 }
 837
 838 #define READ_TO_LISTEND(hdr) \
 839         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 840                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 841                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 842                         return msginfo; \
 843                 } \
 844         }
 845
 846 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 847 {
 848         NNTPSession *session;
 849         MsgInfo *msginfo = NULL;
 850         gchar buf[NNTPBUFSIZE];
 851
 852         session = news_session_get(folder);
 853         g_return_val_if_fail(session != NULL, NULL);
 854         g_return_val_if_fail(item != NULL, NULL);
 855         g_return_val_if_fail(item->folder != NULL, NULL);
 856         g_return_val_if_fail(FOLDER_TYPE(item->folder) == F_NEWS, NULL);
 857
 858         log_message(_("getting xover %d in %s...\n"),
 859                     num, item->path);
 860         if (nntp_xover(session->nntp_sock, num, num) != NN_SUCCESS) {
 861                 log_warning(_("can't get xover\n"));
 862                 return NULL;
 863         }
 864
 865         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 866                 log_warning(_("error occurred while getting xover.\n"));
 867                 return NULL;
 868         }
 869
 870         msginfo = news_parse_xover(buf);
 871         if (!msginfo) {
 872                 log_warning(_("invalid xover line: %s\n"), buf);
 873         }
 874
 875         READ_TO_LISTEND("xover");
 876
 877         if(!msginfo)
 878                 return NULL;
 879
 880         msginfo->folder = item;
 881         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 882         msginfo->flags.tmp_flags = MSG_NEWS;
 883         msginfo->newsgroups = g_strdup(item->path);
 884
 885         if (nntp_xhdr(session->nntp_sock, "to", num, num) != NN_SUCCESS) {
 886                 log_warning(_("can't get xhdr\n"));
 887                 return msginfo;
 888         }
 889
 890         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 891                 log_warning(_("error occurred while getting xhdr.\n"));
 892                 return msginfo;
 893         }
 894
 895         msginfo->to = news_parse_xhdr(buf, msginfo);
 896
 897         READ_TO_LISTEND("xhdr (to)");
 898
 899         if (nntp_xhdr(session->nntp_sock, "cc", num, num) != NN_SUCCESS) {
 900                 log_warning(_("can't get xhdr\n"));
 901                 return msginfo;
 902         }
 903
 904         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 905                 log_warning(_("error occurred while getting xhdr.\n"));
 906                 return msginfo;
 907         }
 908
 909         msginfo->cc = news_parse_xhdr(buf, msginfo);
 910
 911         READ_TO_LISTEND("xhdr (cc)");
 912
 913         return msginfo;
 914 }
 915
 916 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 917 {
 918         gchar buf[NNTPBUFSIZE];
 919         GSList *newlist = NULL;
 920         GSList *llast = NULL;
 921         MsgInfo *msginfo;
 922         guint count = 0, lines = (end - begin + 2) * 3;
 923
 924         g_return_val_if_fail(session != NULL, NULL);
 925         g_return_val_if_fail(item != NULL, NULL);
 926
 927         log_message(_("getting xover %d - %d in %s...\n"),
 928                     begin, end, item->path);
 929         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 930                 log_warning(_("can't get xover\n"));
 931                 return NULL;
 932         }
 933
 934         for (;;) {
 935                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 936                         log_warning(_("error occurred while getting xover.\n"));
 937                         return newlist;
 938                 }
 939                 count++;
 940                 progressindicator_set_percentage
 941                         (PROGRESS_TYPE_NETWORK,
 942                          session->fetch_base_percentage +
 943                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 944
 945                 if (buf[0] == '.' && buf[1] == '\r') break;
 946
 947                 msginfo = news_parse_xover(buf);
 948                 if (!msginfo) {
 949                         log_warning(_("invalid xover line: %s\n"), buf);
 950                         continue;
 951                 }
 952
 953                 msginfo->folder = item;
 954                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 955                 msginfo->flags.tmp_flags = MSG_NEWS;
 956                 msginfo->newsgroups = g_strdup(item->path);
 957
 958                 if (!newlist)
 959                         llast = newlist = g_slist_append(newlist, msginfo);
 960                 else {
 961                         llast = g_slist_append(llast, msginfo);
 962                         llast = llast->next;
 963                 }
 964         }
 965
 966         if (nntp_xhdr(session->nntp_sock, "to", begin, end) != NN_SUCCESS) {
 967                 log_warning(_("can't get xhdr\n"));
 968                 return newlist;
 969         }
 970
 971         llast = newlist;
 972
 973         for (;;) {
 974                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 975                         log_warning(_("error occurred while getting xhdr.\n"));
 976                         return newlist;
 977                 }
 978                 count++;
 979                 progressindicator_set_percentage
 980                         (PROGRESS_TYPE_NETWORK,
 981                          session->fetch_base_percentage +
 982                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 983
 984                 if (buf[0] == '.' && buf[1] == '\r') break;
 985                 if (!llast) {
 986                         g_warning("llast == NULL\n");
 987                         continue;
 988                 }
 989
 990                 msginfo = (MsgInfo *)llast->data;
 991                 msginfo->to = news_parse_xhdr(buf, msginfo);
 992
 993                 llast = llast->next;
 994         }
 995
 996         if (nntp_xhdr(session->nntp_sock, "cc", begin, end) != NN_SUCCESS) {
 997                 log_warning(_("can't get xhdr\n"));
 998                 return newlist;
 999         }
1000
1001         llast = newlist;
1002
1003         for (;;) {
1004                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1005                         log_warning(_("error occurred while getting xhdr.\n"));
1006                         return newlist;
1007                 }
1008                 count++;
1009                 progressindicator_set_percentage
1010                         (PROGRESS_TYPE_NETWORK,
1011                          session->fetch_base_percentage +
1012                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1013
1014                 if (buf[0] == '.' && buf[1] == '\r') break;
1015                 if (!llast) {
1016                         g_warning("llast == NULL\n");
1017                         continue;
1018                 }
1019
1020                 msginfo = (MsgInfo *)llast->data;
1021                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1022
1023                 llast = llast->next;
1024         }
1025
1026         return newlist;
1027 }
1028
1029 gint news_fetch_msgnum_sort(gconstpointer a, gconstpointer b)
1030 {
1031         return (GPOINTER_TO_INT(a) - GPOINTER_TO_INT(b));
1032 }
1033
1034 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1035 {
1036         NNTPSession *session;
1037         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1038         guint first, last, next;
1039         guint tofetch, fetched;
1040
1041         g_return_val_if_fail(folder != NULL, NULL);
1042         g_return_val_if_fail(FOLDER_TYPE(folder) == F_NEWS, NULL);
1043         g_return_val_if_fail(msgnum_list != NULL, NULL);
1044         g_return_val_if_fail(item != NULL, NULL);
1045
1046         session = news_session_get(folder);
1047         g_return_val_if_fail(session != NULL, NULL);
1048
1049         tmp_msgnum_list = g_slist_copy(msgnum_list);
1050         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, news_fetch_msgnum_sort);
1051
1052         progressindicator_start(PROGRESS_TYPE_NETWORK);
1053         tofetch = g_slist_length(tmp_msgnum_list);
1054         fetched = 0;
1055
1056         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1057         last = first;
1058         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1059                 next = GPOINTER_TO_INT(elem->data);
1060                 if(next != (last + 1)) {
1061                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1062                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1063                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1064                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1065                         fetched = last - first + 1;
1066                         first = next;
1067                 }
1068                 last = next;
1069         }
1070         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1071         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1072         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1073         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1074
1075         g_slist_free(tmp_msgnum_list);
1076
1077         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1078
1079         return msginfo_list;
1080 }