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