src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 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 Folder *news_folder_new(const gchar * name, const gchar * folder);
  61 static void news_folder_destroy(Folder * folder);
  62
  63 static gchar *news_fetch_msg(Folder * folder, FolderItem * item, gint num);
  64
  65 static gint news_scan_group(Folder * folder, FolderItem * item);
  66
  67 static void news_folder_init             (Folder        *folder,
  68                                           const gchar   *name,
  69                                           const gchar   *path);
  70
  71 #if USE_OPENSSL
  72 static Session *news_session_new         (const gchar   *server,
  73                                           gushort        port,
  74                                           const gchar   *userid,
  75                                           const gchar   *passwd,
  76                                           SSLType        ssl_type);
  77 #else
  78 static Session *news_session_new         (const gchar   *server,
  79                                           gushort        port,
  80                                           const gchar   *userid,
  81                                           const gchar   *passwd);
  82 #endif
  83
  84 static gint news_get_article_cmd         (NNTPSession   *session,
  85                                           const gchar   *cmd,
  86                                           gint           num,
  87                                           gchar         *filename);
  88 static gint news_get_article             (NNTPSession   *session,
  89                                           gint           num,
  90                                           gchar         *filename);
  91
  92 static gint news_select_group            (NNTPSession   *session,
  93                                           const gchar   *group,
  94                                           gint          *num,
  95                                           gint          *first,
  96                                           gint          *last);
  97 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  98 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  99                                           MsgInfo       *msginfo);
 100 static gint news_remove_msg              (Folder        *folder,
 101                                           FolderItem    *item,
 102                                           gint           num);
 103 gint news_get_num_list                   (Folder        *folder,
 104                                           FolderItem    *item,
 105                                           GSList       **list);
 106 MsgInfo *news_get_msginfo                (Folder        *folder,
 107                                           FolderItem    *item,
 108                                           gint           num);
 109 GSList *news_get_msginfos                (Folder        *folder,
 110                                           FolderItem    *item,
 111                                           GSList        *msgnum_list);
 112
 113 gint news_post_stream                    (Folder        *folder,
 114                                           FILE          *fp);
 115
 116 FolderClass news_class =
 117 {
 118         F_NEWS,
 119         "news",
 120         "News",
 121
 122         /* Folder functions */
 123         news_folder_new,
 124         news_folder_destroy,
 125         NULL,
 126         NULL,
 127
 128         /* FolderItem functions */
 129         NULL,
 130         NULL,
 131         NULL,
 132         NULL,
 133         NULL,
 134         news_get_num_list,
 135         NULL,
 136         NULL,
 137         NULL,
 138         NULL,
 139
 140         /* Message functions */
 141         news_get_msginfo,
 142         news_get_msginfos,
 143         news_fetch_msg,
 144         NULL,
 145         NULL,
 146         NULL,
 147         NULL,
 148         NULL,
 149         NULL,
 150 };
 151
 152 FolderClass *news_get_class()
 153 {
 154         return &news_class;
 155 }
 156
 157 Folder *news_folder_new(const gchar *name, const gchar *path)
 158 {
 159         Folder *folder;
 160
 161         folder = (Folder *)g_new0(NewsFolder, 1);
 162         folder->klass = &news_class;
 163         news_folder_init(folder, name, path);
 164
 165         return folder;
 166 }
 167
 168 void news_folder_destroy(Folder *folder)
 169 {
 170         gchar *dir;
 171
 172         dir = folder_get_path(folder);
 173         if (is_dir_exist(dir))
 174                 remove_dir_recursive(dir);
 175         g_free(dir);
 176
 177         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 178 }
 179
 180 static void news_folder_init(Folder *folder, const gchar *name,
 181                              const gchar *path)
 182 {
 183         folder_remote_folder_init(folder, name, path);
 184 }
 185
 186 #if USE_OPENSSL
 187 static Session *news_session_new(const gchar *server, gushort port,
 188                                  const gchar *userid, const gchar *passwd,
 189                                  SSLType ssl_type)
 190 #else
 191 static Session *news_session_new(const gchar *server, gushort port,
 192                                  const gchar *userid, const gchar *passwd)
 193 #endif
 194 {
 195         gchar buf[NNTPBUFSIZE];
 196         Session *session;
 197
 198         g_return_val_if_fail(server != NULL, NULL);
 199
 200         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 201
 202 #if USE_OPENSSL
 203         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 204 #else
 205         session = nntp_session_new(server, port, buf, userid, passwd);
 206 #endif
 207
 208         return session;
 209 }
 210
 211 static Session *news_session_new_for_folder(Folder *folder)
 212 {
 213         Session *session;
 214         PrefsAccount *ac;
 215         const gchar *userid = NULL;
 216         gchar *passwd = NULL;
 217         gushort port;
 218         gchar buf[NNTPBUFSIZE];
 219
 220         g_return_val_if_fail(folder != NULL, NULL);
 221         g_return_val_if_fail(folder->account != NULL, NULL);
 222
 223         ac = folder->account;
 224         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 225                 userid = ac->userid;
 226                 if (ac->passwd && ac->passwd[0])
 227                         passwd = g_strdup(ac->passwd);
 228                 else
 229                         passwd = input_dialog_query_password(ac->nntp_server,
 230                                                              userid);
 231         }
 232
 233 #if USE_OPENSSL
 234         port = ac->set_nntpport ? ac->nntpport
 235                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 236         session = news_session_new(ac->nntp_server, port, userid, passwd,
 237                                    ac->ssl_nntp);
 238 #else
 239         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 240         session = news_session_new(ac->nntp_server, port, userid, passwd);
 241 #endif
 242         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 243                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 244
 245         g_free(passwd);
 246
 247         return session;
 248 }
 249
 250 NNTPSession *news_session_get(Folder *folder)
 251 {
 252         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 253
 254         g_return_val_if_fail(folder != NULL, NULL);
 255         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 256         g_return_val_if_fail(folder->account != NULL, NULL);
 257
 258         if (!rfolder->session) {
 259                 rfolder->session = news_session_new_for_folder(folder);
 260                 return NNTP_SESSION(rfolder->session);
 261         }
 262
 263         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 264                 rfolder->session->last_access_time = time(NULL);
 265                 return NNTP_SESSION(rfolder->session);
 266         }
 267
 268         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 269             != NN_SUCCESS) {
 270                 log_warning("NNTP connection to %s:%d has been"
 271                               " disconnected. Reconnecting...\n",
 272                             folder->account->nntp_server,
 273                             folder->account->set_nntpport ?
 274                             folder->account->nntpport : NNTP_PORT);
 275                 session_destroy(rfolder->session);
 276                 rfolder->session = news_session_new_for_folder(folder);
 277         }
 278
 279         if (rfolder->session)
 280                 rfolder->session->last_access_time = time(NULL);
 281         return NNTP_SESSION(rfolder->session);
 282 }
 283
 284 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 285 {
 286         gchar *path, *filename;
 287         NNTPSession *session;
 288         gint ok;
 289
 290         g_return_val_if_fail(folder != NULL, NULL);
 291         g_return_val_if_fail(item != NULL, NULL);
 292
 293         path = folder_item_get_path(item);
 294         if (!is_dir_exist(path))
 295                 make_dir_hier(path);
 296         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 297         g_free(path);
 298
 299         if (is_file_exist(filename)) {
 300                 debug_print("article %d has been already cached.\n", num);
 301                 return filename;
 302         }
 303
 304         session = news_session_get(folder);
 305         if (!session) {
 306                 g_free(filename);
 307                 return NULL;
 308         }
 309
 310         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 311         if (ok != NN_SUCCESS) {
 312                 g_warning("can't select group %s\n", item->path);
 313                 g_free(filename);
 314                 return NULL;
 315         }
 316
 317         debug_print("getting article %d...\n", num);
 318         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 319                               num, filename);
 320         if (ok < 0) {
 321                 g_warning("can't read article %d\n", num);
 322                 session_destroy(SESSION(session));
 323                 REMOTE_FOLDER(folder)->session = NULL;
 324                 g_free(filename);
 325                 return NULL;
 326         }
 327
 328         return filename;
 329 }
 330
 331 gint news_scan_group(Folder *folder, FolderItem *item)
 332 {
 333         NNTPSession *session;
 334         gint num = 0, first = 0, last = 0;
 335         gint ok;
 336
 337         g_return_val_if_fail(folder != NULL, -1);
 338         g_return_val_if_fail(item != NULL, -1);
 339
 340         session = news_session_get(folder);
 341         if (!session) return -1;
 342
 343         ok = news_select_group(session, item->path, &num, &first, &last);
 344         if (ok != NN_SUCCESS) {
 345                 log_warning("can't set group: %s\n", item->path);
 346                 return -1;
 347         }
 348
 349         if (num == 0) {
 350                 item->new_msgs = item->unread_msgs = item->total_msgs = item->last_num = 0;
 351                 return 0;
 352         }
 353
 354 /*
 355         path = folder_item_get_path(item);
 356         if (path && is_dir_exist(path)) {
 357                 procmsg_get_mark_sum(path, &new, &unread, &total, &min, &max,
 358                                      first);
 359         }
 360         g_free(path);
 361
 362         if (max < first || last < min)
 363                 new = unread = total = num;
 364         else {
 365                 if (min < first)
 366                         min = first;
 367
 368                 if (last < max)
 369                         max = last;
 370                 else if (max < last) {
 371                         new += last - max;
 372                         unread += last - max;
 373                 }
 374
 375                 if (new > num) new = num;
 376                 if (unread > num) unread = num;
 377         }
 378
 379         item->new = new;
 380         item->unread = unread;
 381         item->total = num;
 382         item->last_num = last;
 383 */
 384         return 0;
 385 }
 386
 387 static NewsGroupInfo *news_group_info_new(const gchar *name,
 388                                           gint first, gint last, gchar type)
 389 {
 390         NewsGroupInfo *ginfo;
 391
 392         ginfo = g_new(NewsGroupInfo, 1);
 393         ginfo->name = g_strdup(name);
 394         ginfo->first = first;
 395         ginfo->last = last;
 396         ginfo->type = type;
 397
 398         return ginfo;
 399 }
 400
 401 static void news_group_info_free(NewsGroupInfo *ginfo)
 402 {
 403         g_free(ginfo->name);
 404         g_free(ginfo);
 405 }
 406
 407 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 408                                     NewsGroupInfo *ginfo2)
 409 {
 410         return g_strcasecmp(ginfo1->name, ginfo2->name);
 411 }
 412
 413 GSList *news_get_group_list(Folder *folder)
 414 {
 415         gchar *path, *filename;
 416         FILE *fp;
 417         GSList *list = NULL;
 418         GSList *last = NULL;
 419         gchar buf[NNTPBUFSIZE];
 420
 421         g_return_val_if_fail(folder != NULL, NULL);
 422         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 423
 424         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 425         if (!is_dir_exist(path))
 426                 make_dir_hier(path);
 427         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 428         g_free(path);
 429
 430         if ((fp = fopen(filename, "rb")) == NULL) {
 431                 NNTPSession *session;
 432
 433                 session = news_session_get(folder);
 434                 if (!session) {
 435                         g_free(filename);
 436                         return NULL;
 437                 }
 438
 439                 if (nntp_list(session) != NN_SUCCESS) {
 440                         g_free(filename);
 441                         return NULL;
 442                 }
 443                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 444                         log_warning("can't retrieve newsgroup list\n");
 445                         session_destroy(SESSION(session));
 446                         REMOTE_FOLDER(folder)->session = NULL;
 447                         g_free(filename);
 448                         return NULL;
 449                 }
 450
 451                 if ((fp = fopen(filename, "rb")) == NULL) {
 452                         FILE_OP_ERROR(filename, "fopen");
 453                         g_free(filename);
 454                         return NULL;
 455                 }
 456         }
 457
 458         while (fgets(buf, sizeof(buf), fp) != NULL) {
 459                 gchar *p = buf;
 460                 gchar *name;
 461                 gint last_num;
 462                 gint first_num;
 463                 gchar type;
 464                 NewsGroupInfo *ginfo;
 465
 466                 p = strchr(p, ' ');
 467                 if (!p) continue;
 468                 *p = '\0';
 469                 p++;
 470                 name = buf;
 471
 472                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 473                         continue;
 474
 475                 ginfo = news_group_info_new(name, first_num, last_num, type);
 476
 477                 if (!last)
 478                         last = list = g_slist_append(NULL, ginfo);
 479                 else {
 480                         last = g_slist_append(last, ginfo);
 481                         last = last->next;
 482                 }
 483         }
 484
 485         fclose(fp);
 486         g_free(filename);
 487
 488         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 489
 490         return list;
 491 }
 492
 493 void news_group_list_free(GSList *group_list)
 494 {
 495         GSList *cur;
 496
 497         if (!group_list) return;
 498
 499         for (cur = group_list; cur != NULL; cur = cur->next)
 500                 news_group_info_free((NewsGroupInfo *)cur->data);
 501         g_slist_free(group_list);
 502 }
 503
 504 void news_remove_group_list_cache(Folder *folder)
 505 {
 506         gchar *path, *filename;
 507
 508         g_return_if_fail(folder != NULL);
 509         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 510
 511         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 512         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 513         g_free(path);
 514
 515         if (is_file_exist(filename)) {
 516                 if (remove(filename) < 0)
 517                         FILE_OP_ERROR(filename, "remove");
 518         }
 519         g_free(filename);
 520 }
 521
 522 gint news_post(Folder *folder, const gchar *file)
 523 {
 524         FILE *fp;
 525         gint ok;
 526
 527         g_return_val_if_fail(folder != NULL, -1);
 528         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 529         g_return_val_if_fail(file != NULL, -1);
 530
 531         if ((fp = fopen(file, "rb")) == NULL) {
 532                 FILE_OP_ERROR(file, "fopen");
 533                 return -1;
 534         }
 535
 536         ok = news_post_stream(folder, fp);
 537
 538         fclose(fp);
 539
 540         return ok;
 541 }
 542
 543 gint news_post_stream(Folder *folder, FILE *fp)
 544 {
 545         NNTPSession *session;
 546         gint ok;
 547
 548         g_return_val_if_fail(folder != NULL, -1);
 549         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 550         g_return_val_if_fail(fp != NULL, -1);
 551
 552         session = news_session_get(folder);
 553         if (!session) return -1;
 554
 555         ok = nntp_post(session, fp);
 556         if (ok != NN_SUCCESS) {
 557                 log_warning("can't post article.\n");
 558                 return -1;
 559         }
 560
 561         return 0;
 562 }
 563
 564 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 565                                  gint num, gchar *filename)
 566 {
 567         gchar *msgid;
 568
 569         if (nntp_get_article(session, cmd, num, &msgid)
 570             != NN_SUCCESS)
 571                 return -1;
 572
 573         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 574         g_free(msgid);
 575
 576         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 577                 log_warning("can't retrieve article %d\n", num);
 578                 return -1;
 579         }
 580
 581         return 0;
 582 }
 583
 584 static gint news_remove_msg(Folder *folder, FolderItem *item, gint num)
 585 {
 586         gchar * dir;
 587         gint r;
 588
 589         dir = folder_item_get_path(item);
 590         debug_print("news_remove_msg: removing msg %d in %s\n",num,dir);
 591         r = remove_numbered_files(dir, num, num);
 592         g_free(dir);
 593
 594         return r;
 595 }
 596
 597 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 598 {
 599         return news_get_article_cmd(session, "ARTICLE", num, filename);
 600 }
 601
 602 /**
 603  * news_select_group:
 604  * @session: Active NNTP session.
 605  * @group: Newsgroup name.
 606  * @num: Estimated number of articles.
 607  * @first: First article number.
 608  * @last: Last article number.
 609  *
 610  * Select newsgroup @group with the GROUP command if it is not already
 611  * selected in @session, or article numbers need to be returned.
 612  *
 613  * Return value: NNTP result code.
 614  **/
 615 static gint news_select_group(NNTPSession *session, const gchar *group,
 616                               gint *num, gint *first, gint *last)
 617 {
 618         gint ok;
 619         gint num_, first_, last_;
 620
 621         if (!num || !first || !last) {
 622                 if (session->group && g_strcasecmp(session->group, group) == 0)
 623                         return NN_SUCCESS;
 624                 num = &num_;
 625                 first = &first_;
 626                 last = &last_;
 627         }
 628
 629         g_free(session->group);
 630         session->group = NULL;
 631
 632         ok = nntp_group(session, group, num, first, last);
 633         if (ok == NN_SUCCESS)
 634                 session->group = g_strdup(group);
 635
 636         return ok;
 637 }
 638
 639 #define PARSE_ONE_PARAM(p, srcp) \
 640 { \
 641         p = strchr(srcp, '\t'); \
 642         if (!p) return NULL; \
 643         else \
 644                 *p++ = '\0'; \
 645 }
 646
 647 static MsgInfo *news_parse_xover(const gchar *xover_str)
 648 {
 649         MsgInfo *msginfo;
 650         gchar buf[NNTPBUFSIZE];
 651         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 652         gchar *p;
 653         gint num, size_int, line_int;
 654         gchar *xover_buf;
 655
 656         Xstrdup_a(xover_buf, xover_str, return NULL);
 657
 658         PARSE_ONE_PARAM(subject, xover_buf);
 659         PARSE_ONE_PARAM(sender, subject);
 660         PARSE_ONE_PARAM(date, sender);
 661         PARSE_ONE_PARAM(msgid, date);
 662         PARSE_ONE_PARAM(ref, msgid);
 663         PARSE_ONE_PARAM(size, ref);
 664         PARSE_ONE_PARAM(line, size);
 665         PARSE_ONE_PARAM(xref, line);
 666
 667         tmp = strchr(xref, '\t');
 668         if (!tmp) tmp = strchr(line, '\r');
 669         if (!tmp) tmp = strchr(line, '\n');
 670         if (tmp) *tmp = '\0';
 671
 672         num = atoi(xover_str);
 673         size_int = atoi(size);
 674         line_int = atoi(line);
 675
 676         /* set MsgInfo */
 677         msginfo = procmsg_msginfo_new();
 678         msginfo->msgnum = num;
 679         msginfo->size = size_int;
 680
 681         msginfo->date = g_strdup(date);
 682         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 683
 684         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 685         msginfo->from = g_strdup(buf);
 686         msginfo->fromname = procheader_get_fromname(buf);
 687
 688         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 689         msginfo->subject = g_strdup(buf);
 690
 691         extract_parenthesis(msgid, '<', '>');
 692         remove_space(msgid);
 693         if (*msgid != '\0')
 694                 msginfo->msgid = g_strdup(msgid);
 695
 696         msginfo->references = g_strdup(ref);
 697         eliminate_parenthesis(ref, '(', ')');
 698         if ((p = strrchr(ref, '<')) != NULL) {
 699                 extract_parenthesis(p, '<', '>');
 700                 remove_space(p);
 701                 if (*p != '\0')
 702                         msginfo->inreplyto = g_strdup(p);
 703         }
 704
 705         msginfo->xref = g_strdup(xref);
 706         p = msginfo->xref+strlen(msginfo->xref) - 1;
 707         while (*p == '\r' || *p == '\n') {
 708                 *p = '\0';
 709                 p--;
 710         }
 711
 712         return msginfo;
 713 }
 714
 715 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 716 {
 717         gchar *p;
 718         gchar *tmp;
 719         gint num;
 720
 721         p = strchr(xhdr_str, ' ');
 722         if (!p)
 723                 return NULL;
 724         else
 725                 p++;
 726
 727         num = atoi(xhdr_str);
 728         if (msginfo->msgnum != num) return NULL;
 729
 730         tmp = strchr(p, '\r');
 731         if (!tmp) tmp = strchr(p, '\n');
 732
 733         if (tmp)
 734                 return g_strndup(p, tmp - p);
 735         else
 736                 return g_strdup(p);
 737 }
 738
 739 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 740 {
 741         gchar * tmp;
 742         FILE * tmpfp;
 743         gchar buf[BUFFSIZE];
 744
 745         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 746                               G_DIR_SEPARATOR, (gint)msginfo);
 747         if (tmp == NULL)
 748                 return -1;
 749
 750         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 751                 FILE_OP_ERROR(tmp, "fopen");
 752                 return -1;
 753         }
 754         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 755                 FILE_OP_ERROR(tmp, "chmod");
 756                 g_warning("can't change file mode\n");
 757         }
 758
 759         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 760         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 761         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 762         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 763         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 764         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 765         get_rfc822_date(buf, sizeof(buf));
 766         fprintf(tmpfp, "Date: %s\r\n", buf);
 767         fprintf(tmpfp, "\r\n");
 768         fprintf(tmpfp, "removed with sylpheed\r\n");
 769
 770         fclose(tmpfp);
 771
 772         news_post(folder, tmp);
 773         remove(tmp);
 774
 775         g_free(tmp);
 776
 777         return 0;
 778 }
 779
 780 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list)
 781 {
 782         NNTPSession *session;
 783         gint i, ok, num, first, last, nummsgs = 0;
 784         gchar *dir;
 785
 786         g_return_val_if_fail(item != NULL, -1);
 787         g_return_val_if_fail(item->folder != NULL, -1);
 788         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 789
 790         session = news_session_get(folder);
 791         g_return_val_if_fail(session != NULL, -1);
 792
 793         ok = news_select_group(session, item->path, &num, &first, &last);
 794         if (ok != NN_SUCCESS) {
 795                 log_warning(_("can't set group: %s\n"), item->path);
 796                 return -1;
 797         }
 798
 799         if(last < first) {
 800                 log_warning(_("invalid article range: %d - %d\n"),
 801                             first, last);
 802                 return 0;
 803         }
 804
 805         for(i = first; i <= last; i++) {
 806                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 807                 nummsgs++;
 808         }
 809
 810         dir = folder_item_get_path(item);
 811         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 812         remove_numbered_files(dir, 1, first - 1);
 813         g_free(dir);
 814
 815         return nummsgs;
 816 }
 817
 818 #define READ_TO_LISTEND(hdr) \
 819         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 820                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 821                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 822                         return msginfo; \
 823                 } \
 824         }
 825
 826 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 827 {
 828         NNTPSession *session;
 829         MsgInfo *msginfo = NULL;
 830         gchar buf[NNTPBUFSIZE];
 831
 832         session = news_session_get(folder);
 833         g_return_val_if_fail(session != NULL, NULL);
 834         g_return_val_if_fail(item != NULL, NULL);
 835         g_return_val_if_fail(item->folder != NULL, NULL);
 836         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 837
 838         log_message(_("getting xover %d in %s...\n"),
 839                     num, item->path);
 840         if (nntp_xover(session, num, num) != NN_SUCCESS) {
 841                 log_warning(_("can't get xover\n"));
 842                 return NULL;
 843         }
 844
 845         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 846                 log_warning(_("error occurred while getting xover.\n"));
 847                 return NULL;
 848         }
 849
 850         msginfo = news_parse_xover(buf);
 851         if (!msginfo) {
 852                 log_warning(_("invalid xover line: %s\n"), buf);
 853         }
 854
 855         READ_TO_LISTEND("xover");
 856
 857         if(!msginfo)
 858                 return NULL;
 859
 860         msginfo->folder = item;
 861         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 862         msginfo->flags.tmp_flags = MSG_NEWS;
 863         msginfo->newsgroups = g_strdup(item->path);
 864
 865         if (nntp_xhdr(session, "to", num, num) != NN_SUCCESS) {
 866                 log_warning(_("can't get xhdr\n"));
 867                 return msginfo;
 868         }
 869
 870         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 871                 log_warning(_("error occurred while getting xhdr.\n"));
 872                 return msginfo;
 873         }
 874
 875         msginfo->to = news_parse_xhdr(buf, msginfo);
 876
 877         READ_TO_LISTEND("xhdr (to)");
 878
 879         if (nntp_xhdr(session, "cc", num, num) != NN_SUCCESS) {
 880                 log_warning(_("can't get xhdr\n"));
 881                 return msginfo;
 882         }
 883
 884         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 885                 log_warning(_("error occurred while getting xhdr.\n"));
 886                 return msginfo;
 887         }
 888
 889         msginfo->cc = news_parse_xhdr(buf, msginfo);
 890
 891         READ_TO_LISTEND("xhdr (cc)");
 892
 893         return msginfo;
 894 }
 895
 896 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 897 {
 898         gchar buf[NNTPBUFSIZE];
 899         GSList *newlist = NULL;
 900         GSList *llast = NULL;
 901         MsgInfo *msginfo;
 902         guint count = 0, lines = (end - begin + 2) * 3;
 903
 904         g_return_val_if_fail(session != NULL, NULL);
 905         g_return_val_if_fail(item != NULL, NULL);
 906
 907         log_message(_("getting xover %d - %d in %s...\n"),
 908                     begin, end, item->path);
 909         if (nntp_xover(session, begin, end) != NN_SUCCESS) {
 910                 log_warning(_("can't get xover\n"));
 911                 return NULL;
 912         }
 913
 914         for (;;) {
 915                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 916                         log_warning(_("error occurred while getting xover.\n"));
 917                         return newlist;
 918                 }
 919                 count++;
 920                 progressindicator_set_percentage
 921                         (PROGRESS_TYPE_NETWORK,
 922                          session->fetch_base_percentage +
 923                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 924
 925                 if (buf[0] == '.' && buf[1] == '\r') break;
 926
 927                 msginfo = news_parse_xover(buf);
 928                 if (!msginfo) {
 929                         log_warning(_("invalid xover line: %s\n"), buf);
 930                         continue;
 931                 }
 932
 933                 msginfo->folder = item;
 934                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 935                 msginfo->flags.tmp_flags = MSG_NEWS;
 936                 msginfo->newsgroups = g_strdup(item->path);
 937
 938                 if (!newlist)
 939                         llast = newlist = g_slist_append(newlist, msginfo);
 940                 else {
 941                         llast = g_slist_append(llast, msginfo);
 942                         llast = llast->next;
 943                 }
 944         }
 945
 946         if (nntp_xhdr(session, "to", begin, end) != NN_SUCCESS) {
 947                 log_warning(_("can't get xhdr\n"));
 948                 return newlist;
 949         }
 950
 951         llast = newlist;
 952
 953         for (;;) {
 954                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 955                         log_warning(_("error occurred while getting xhdr.\n"));
 956                         return newlist;
 957                 }
 958                 count++;
 959                 progressindicator_set_percentage
 960                         (PROGRESS_TYPE_NETWORK,
 961                          session->fetch_base_percentage +
 962                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 963
 964                 if (buf[0] == '.' && buf[1] == '\r') break;
 965                 if (!llast) {
 966                         g_warning("llast == NULL\n");
 967                         continue;
 968                 }
 969
 970                 msginfo = (MsgInfo *)llast->data;
 971                 msginfo->to = news_parse_xhdr(buf, msginfo);
 972
 973                 llast = llast->next;
 974         }
 975
 976         if (nntp_xhdr(session, "cc", begin, end) != NN_SUCCESS) {
 977                 log_warning(_("can't get xhdr\n"));
 978                 return newlist;
 979         }
 980
 981         llast = newlist;
 982
 983         for (;;) {
 984                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 985                         log_warning(_("error occurred while getting xhdr.\n"));
 986                         return newlist;
 987                 }
 988                 count++;
 989                 progressindicator_set_percentage
 990                         (PROGRESS_TYPE_NETWORK,
 991                          session->fetch_base_percentage +
 992                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 993
 994                 if (buf[0] == '.' && buf[1] == '\r') break;
 995                 if (!llast) {
 996                         g_warning("llast == NULL\n");
 997                         continue;
 998                 }
 999
1000                 msginfo = (MsgInfo *)llast->data;
1001                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1002
1003                 llast = llast->next;
1004         }
1005
1006         return newlist;
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_CLASS(folder) == &news_class, 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, g_int_compare);
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                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1038                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1039                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1040                         fetched = last - first + 1;
1041                         first = next;
1042                 }
1043                 last = next;
1044         }
1045         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1046         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1047         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1048         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1049
1050         g_slist_free(tmp_msgnum_list);
1051
1052         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1053
1054         return msginfo_list;
1055 }