src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2004 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <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 #include "remotefolder.h"
  52 #include "alertpanel.h"
  53 #if USE_OPENSSL
  54 #  include "ssl.h"
  55 #endif
  56
  57 #define NNTP_PORT       119
  58 #if USE_OPENSSL
  59 #define NNTPS_PORT      563
  60 #endif
  61
  62 typedef struct _NewsFolder      NewsFolder;
  63
  64 #define NEWS_FOLDER(obj)        ((NewsFolder *)obj)
  65
  66 struct _NewsFolder
  67 {
  68         RemoteFolder rfolder;
  69
  70         gboolean use_auth;
  71 };
  72
  73 static void news_folder_init             (Folder        *folder,
  74                                           const gchar   *name,
  75                                           const gchar   *path);
  76
  77 static Folder   *news_folder_new        (const gchar    *name,
  78                                          const gchar    *folder);
  79 static void      news_folder_destroy    (Folder         *folder);
  80
  81 static gchar *news_fetch_msg            (Folder         *folder,
  82                                          FolderItem     *item,
  83                                          gint            num);
  84
  85
  86 #if USE_OPENSSL
  87 static Session *news_session_new         (const gchar   *server,
  88                                           gushort        port,
  89                                           const gchar   *userid,
  90                                           const gchar   *passwd,
  91                                           SSLType        ssl_type);
  92 #else
  93 static Session *news_session_new         (const gchar   *server,
  94                                           gushort        port,
  95                                           const gchar   *userid,
  96                                           const gchar   *passwd);
  97 #endif
  98
  99 static gint news_get_article_cmd         (NNTPSession   *session,
 100                                           const gchar   *cmd,
 101                                           gint           num,
 102                                           gchar         *filename);
 103 static gint news_get_article             (NNTPSession   *session,
 104                                           gint           num,
 105                                           gchar         *filename);
 106
 107 static gint news_select_group            (NNTPSession   *session,
 108                                           const gchar   *group,
 109                                           gint          *num,
 110                                           gint          *first,
 111                                           gint          *last);
 112 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
 113 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
 114                                           MsgInfo       *msginfo);
 115 gint news_get_num_list                   (Folder        *folder,
 116                                           FolderItem    *item,
 117                                           GSList       **list,
 118                                           gboolean      *old_uids_valid);
 119 MsgInfo *news_get_msginfo                (Folder        *folder,
 120                                           FolderItem    *item,
 121                                           gint           num);
 122 GSList *news_get_msginfos                (Folder        *folder,
 123                                           FolderItem    *item,
 124                                           GSList        *msgnum_list);
 125 gboolean news_scan_required              (Folder        *folder,
 126                                           FolderItem    *item);
 127
 128 gint news_post_stream                    (Folder        *folder,
 129                                           FILE          *fp);
 130 static gchar *news_folder_get_path       (Folder        *folder);
 131 gchar *news_item_get_path                (Folder        *folder,
 132                                           FolderItem    *item);
 133
 134 static FolderClass news_class;
 135
 136 FolderClass *news_get_class(void)
 137 {
 138         if (news_class.idstr == NULL) {
 139                 news_class.type = F_NEWS;
 140                 news_class.idstr = "news";
 141                 news_class.uistr = "News";
 142
 143                 /* Folder functions */
 144                 news_class.new_folder = news_folder_new;
 145                 news_class.destroy_folder = news_folder_destroy;
 146
 147                 /* FolderItem functions */
 148                 news_class.item_get_path = news_item_get_path;
 149                 news_class.get_num_list = news_get_num_list;
 150                 news_class.scan_required = news_scan_required;
 151
 152                 /* Message functions */
 153                 news_class.get_msginfo = news_get_msginfo;
 154                 news_class.get_msginfos = news_get_msginfos;
 155                 news_class.fetch_msg = news_fetch_msg;
 156         };
 157
 158         return &news_class;
 159 }
 160
 161 static Folder *news_folder_new(const gchar *name, const gchar *path)
 162 {
 163         Folder *folder;
 164
 165         folder = (Folder *)g_new0(NewsFolder, 1);
 166         folder->klass = &news_class;
 167         news_folder_init(folder, name, path);
 168
 169         return folder;
 170 }
 171
 172 static void news_folder_destroy(Folder *folder)
 173 {
 174         gchar *dir;
 175
 176         dir = news_folder_get_path(folder);
 177         if (is_dir_exist(dir))
 178                 remove_dir_recursive(dir);
 179         g_free(dir);
 180
 181         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 182 }
 183
 184 static void news_folder_init(Folder *folder, const gchar *name,
 185                              const gchar *path)
 186 {
 187         folder_remote_folder_init(folder, name, path);
 188 }
 189
 190 #if USE_OPENSSL
 191 static Session *news_session_new(const gchar *server, gushort port,
 192                                  const gchar *userid, const gchar *passwd,
 193                                  SSLType ssl_type)
 194 #else
 195 static Session *news_session_new(const gchar *server, gushort port,
 196                                  const gchar *userid, const gchar *passwd)
 197 #endif
 198 {
 199         gchar buf[NNTPBUFSIZE];
 200         Session *session;
 201
 202         g_return_val_if_fail(server != NULL, NULL);
 203
 204         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 205
 206 #if USE_OPENSSL
 207         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 208 #else
 209         session = nntp_session_new(server, port, buf, userid, passwd);
 210 #endif
 211
 212         return session;
 213 }
 214
 215 static Session *news_session_new_for_folder(Folder *folder)
 216 {
 217         Session *session;
 218         PrefsAccount *ac;
 219         const gchar *userid = NULL;
 220         gchar *passwd = NULL;
 221         gushort port;
 222         gchar buf[NNTPBUFSIZE];
 223
 224         g_return_val_if_fail(folder != NULL, NULL);
 225         g_return_val_if_fail(folder->account != NULL, NULL);
 226
 227         ac = folder->account;
 228         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 229                 userid = ac->userid;
 230                 if (ac->passwd && ac->passwd[0])
 231                         passwd = g_strdup(ac->passwd);
 232                 else
 233                         passwd = input_dialog_query_password(ac->nntp_server,
 234                                                              userid);
 235         }
 236
 237 #if USE_OPENSSL
 238         port = ac->set_nntpport ? ac->nntpport
 239                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 240         session = news_session_new(ac->nntp_server, port, userid, passwd,
 241                                    ac->ssl_nntp);
 242 #else
 243         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 244         session = news_session_new(ac->nntp_server, port, userid, passwd);
 245 #endif
 246         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 247                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 248
 249         g_free(passwd);
 250
 251         return session;
 252 }
 253
 254 static NNTPSession *news_session_get(Folder *folder)
 255 {
 256         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 257
 258         g_return_val_if_fail(folder != NULL, NULL);
 259         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 260         g_return_val_if_fail(folder->account != NULL, NULL);
 261
 262         if (prefs_common.work_offline)
 263                 return NULL;
 264
 265         if (!rfolder->session) {
 266                 rfolder->session = news_session_new_for_folder(folder);
 267                 return NNTP_SESSION(rfolder->session);
 268         }
 269
 270         if (time(NULL) - rfolder->session->last_access_time <
 271                 SESSION_TIMEOUT_INTERVAL) {
 272                 return NNTP_SESSION(rfolder->session);
 273         }
 274
 275         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 276             != NN_SUCCESS) {
 277                 log_warning(_("NNTP connection to %s:%d has been"
 278                               " disconnected. Reconnecting...\n"),
 279                             folder->account->nntp_server,
 280                             folder->account->set_nntpport ?
 281                             folder->account->nntpport : NNTP_PORT);
 282                 session_destroy(rfolder->session);
 283                 rfolder->session = news_session_new_for_folder(folder);
 284         }
 285
 286         if (rfolder->session)
 287                 session_set_access_time(rfolder->session);
 288
 289         return NNTP_SESSION(rfolder->session);
 290 }
 291
 292 static gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 293 {
 294         gchar *path, *filename;
 295         NNTPSession *session;
 296         gint ok;
 297
 298         g_return_val_if_fail(folder != NULL, NULL);
 299         g_return_val_if_fail(item != NULL, NULL);
 300
 301         path = folder_item_get_path(item);
 302         if (!is_dir_exist(path))
 303                 make_dir_hier(path);
 304         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 305         g_free(path);
 306
 307         if (is_file_exist(filename)) {
 308                 debug_print("article %d has been already cached.\n", num);
 309                 return filename;
 310         }
 311
 312         session = news_session_get(folder);
 313         if (!session) {
 314                 g_free(filename);
 315                 return NULL;
 316         }
 317
 318         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 319         if (ok != NN_SUCCESS) {
 320                 if (ok == NN_SOCKET) {
 321                         session_destroy(SESSION(session));
 322                         REMOTE_FOLDER(folder)->session = NULL;
 323                 }
 324                 g_free(filename);
 325                 return NULL;
 326         }
 327
 328         debug_print("getting article %d...\n", num);
 329         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 330                               num, filename);
 331         if (ok != NN_SUCCESS) {
 332                 g_warning("can't read article %d\n", num);
 333                 if (ok == NN_SOCKET) {
 334                         session_destroy(SESSION(session));
 335                         REMOTE_FOLDER(folder)->session = NULL;
 336                 }
 337                 g_free(filename);
 338                 return NULL;
 339         }
 340
 341         return filename;
 342 }
 343
 344 static NewsGroupInfo *news_group_info_new(const gchar *name,
 345                                           gint first, gint last, gchar type)
 346 {
 347         NewsGroupInfo *ginfo;
 348
 349         ginfo = g_new(NewsGroupInfo, 1);
 350         ginfo->name = g_strdup(name);
 351         ginfo->first = first;
 352         ginfo->last = last;
 353         ginfo->type = type;
 354
 355         return ginfo;
 356 }
 357
 358 static void news_group_info_free(NewsGroupInfo *ginfo)
 359 {
 360         g_free(ginfo->name);
 361         g_free(ginfo);
 362 }
 363
 364 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 365                                     NewsGroupInfo *ginfo2)
 366 {
 367         return g_strcasecmp(ginfo1->name, ginfo2->name);
 368 }
 369
 370 GSList *news_get_group_list(Folder *folder)
 371 {
 372         gchar *path, *filename;
 373         FILE *fp;
 374         GSList *list = NULL;
 375         GSList *last = NULL;
 376         gchar buf[NNTPBUFSIZE];
 377
 378         g_return_val_if_fail(folder != NULL, NULL);
 379         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 380
 381         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 382         if (!is_dir_exist(path))
 383                 make_dir_hier(path);
 384         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 385         g_free(path);
 386
 387         if ((fp = fopen(filename, "rb")) == NULL) {
 388                 NNTPSession *session;
 389                 gint ok;
 390
 391                 session = news_session_get(folder);
 392                 if (!session) {
 393                         g_free(filename);
 394                         return NULL;
 395                 }
 396
 397                 ok = nntp_list(session);
 398                 if (ok != NN_SUCCESS) {
 399                         if (ok == NN_SOCKET) {
 400                                 session_destroy(SESSION(session));
 401                                 REMOTE_FOLDER(folder)->session = NULL;
 402                         }
 403                         g_free(filename);
 404                         return NULL;
 405                 }
 406                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 407                         log_warning(_("can't retrieve newsgroup list\n"));
 408                         session_destroy(SESSION(session));
 409                         REMOTE_FOLDER(folder)->session = NULL;
 410                         g_free(filename);
 411                         return NULL;
 412                 }
 413
 414                 if ((fp = fopen(filename, "rb")) == NULL) {
 415                         FILE_OP_ERROR(filename, "fopen");
 416                         g_free(filename);
 417                         return NULL;
 418                 }
 419         }
 420
 421         while (fgets(buf, sizeof(buf), fp) != NULL) {
 422                 gchar *p = buf;
 423                 gchar *name;
 424                 gint last_num;
 425                 gint first_num;
 426                 gchar type;
 427                 NewsGroupInfo *ginfo;
 428
 429                 p = strchr(p, ' ');
 430                 if (!p) continue;
 431                 *p = '\0';
 432                 p++;
 433                 name = buf;
 434
 435                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 436                         continue;
 437
 438                 ginfo = news_group_info_new(name, first_num, last_num, type);
 439
 440                 if (!last)
 441                         last = list = g_slist_append(NULL, ginfo);
 442                 else {
 443                         last = g_slist_append(last, ginfo);
 444                         last = last->next;
 445                 }
 446         }
 447
 448         fclose(fp);
 449         g_free(filename);
 450
 451         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 452
 453         return list;
 454 }
 455
 456 void news_group_list_free(GSList *group_list)
 457 {
 458         GSList *cur;
 459
 460         if (!group_list) return;
 461
 462         for (cur = group_list; cur != NULL; cur = cur->next)
 463                 news_group_info_free((NewsGroupInfo *)cur->data);
 464         g_slist_free(group_list);
 465 }
 466
 467 void news_remove_group_list_cache(Folder *folder)
 468 {
 469         gchar *path, *filename;
 470
 471         g_return_if_fail(folder != NULL);
 472         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 473
 474         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 475         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 476         g_free(path);
 477
 478         if (is_file_exist(filename)) {
 479                 if (remove(filename) < 0)
 480                         FILE_OP_ERROR(filename, "remove");
 481         }
 482         g_free(filename);
 483 }
 484
 485 gint news_post(Folder *folder, const gchar *file)
 486 {
 487         FILE *fp;
 488         gint ok;
 489
 490         g_return_val_if_fail(folder != NULL, -1);
 491         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 492         g_return_val_if_fail(file != NULL, -1);
 493
 494         if ((fp = fopen(file, "rb")) == NULL) {
 495                 FILE_OP_ERROR(file, "fopen");
 496                 return -1;
 497         }
 498
 499         ok = news_post_stream(folder, fp);
 500
 501         fclose(fp);
 502
 503         return ok;
 504 }
 505
 506 gint news_post_stream(Folder *folder, FILE *fp)
 507 {
 508         NNTPSession *session;
 509         gint ok;
 510
 511         g_return_val_if_fail(folder != NULL, -1);
 512         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 513         g_return_val_if_fail(fp != NULL, -1);
 514
 515         session = news_session_get(folder);
 516         if (!session) return -1;
 517
 518         ok = nntp_post(session, fp);
 519         if (ok != NN_SUCCESS) {
 520                 log_warning(_("can't post article.\n"));
 521                 if (ok == NN_SOCKET) {
 522                         session_destroy(SESSION(session));
 523                         REMOTE_FOLDER(folder)->session = NULL;
 524                 }
 525                 return -1;
 526         }
 527
 528         return 0;
 529 }
 530
 531 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 532                                  gint num, gchar *filename)
 533 {
 534         gchar *msgid;
 535         gint ok;
 536
 537         ok = nntp_get_article(session, cmd, num, &msgid);
 538         if (ok != NN_SUCCESS)
 539                 return ok;
 540
 541         debug_print("Message-ID = %s, num = %d\n", msgid, num);
 542         g_free(msgid);
 543
 544         ok = recv_write_to_file(SESSION(session)->sock, filename);
 545         if (ok < 0) {
 546                 log_warning(_("can't retrieve article %d\n"), num);
 547                 if (ok == -2)
 548                         return NN_SOCKET;
 549                 else
 550                         return NN_IOERR;
 551         }
 552
 553         return NN_SUCCESS;
 554 }
 555
 556 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 557 {
 558         return news_get_article_cmd(session, "ARTICLE", num, filename);
 559 }
 560
 561 /**
 562  * news_select_group:
 563  * @session: Active NNTP session.
 564  * @group: Newsgroup name.
 565  * @num: Estimated number of articles.
 566  * @first: First article number.
 567  * @last: Last article number.
 568  *
 569  * Select newsgroup @group with the GROUP command if it is not already
 570  * selected in @session, or article numbers need to be returned.
 571  *
 572  * Return value: NNTP result code.
 573  **/
 574 static gint news_select_group(NNTPSession *session, const gchar *group,
 575                               gint *num, gint *first, gint *last)
 576 {
 577         gint ok;
 578         gint num_, first_, last_;
 579
 580         if (!num || !first || !last) {
 581                 if (session->group && g_strcasecmp(session->group, group) == 0)
 582                         return NN_SUCCESS;
 583                 num = &num_;
 584                 first = &first_;
 585                 last = &last_;
 586         }
 587
 588         g_free(session->group);
 589         session->group = NULL;
 590
 591         ok = nntp_group(session, group, num, first, last);
 592         if (ok == NN_SUCCESS)
 593                 session->group = g_strdup(group);
 594         else
 595                 log_warning(_("can't select group: %s\n"), group);
 596
 597         return ok;
 598 }
 599
 600 #define PARSE_ONE_PARAM(p, srcp) \
 601 { \
 602         p = strchr(srcp, '\t'); \
 603         if (!p) return NULL; \
 604         else \
 605                 *p++ = '\0'; \
 606 }
 607
 608 static MsgInfo *news_parse_xover(const gchar *xover_str)
 609 {
 610         MsgInfo *msginfo;
 611         gchar buf[NNTPBUFSIZE];
 612         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 613         gchar *p;
 614         gint num, size_int, line_int;
 615         gchar *xover_buf;
 616
 617         Xstrdup_a(xover_buf, xover_str, return NULL);
 618
 619         PARSE_ONE_PARAM(subject, xover_buf);
 620         PARSE_ONE_PARAM(sender, subject);
 621         PARSE_ONE_PARAM(date, sender);
 622         PARSE_ONE_PARAM(msgid, date);
 623         PARSE_ONE_PARAM(ref, msgid);
 624         PARSE_ONE_PARAM(size, ref);
 625         PARSE_ONE_PARAM(line, size);
 626         /*
 627          * PARSE_ONE_PARAM(xref, line);
 628          *
 629          * if we parse extra headers we should first examine the
 630          * LIST OVERVIEW.FMT response from the server. See
 631          * RFC2980 for details
 632          */
 633
 634         tmp = strchr(line, '\t');
 635         if (!tmp) tmp = strchr(line, '\r');
 636         if (!tmp) tmp = strchr(line, '\n');
 637         if (tmp) *tmp = '\0';
 638
 639         num = atoi(xover_str);
 640         size_int = atoi(size);
 641         line_int = atoi(line);
 642
 643         /* set MsgInfo */
 644         msginfo = procmsg_msginfo_new();
 645         msginfo->msgnum = num;
 646         msginfo->size = size_int;
 647
 648         msginfo->date = g_strdup(date);
 649         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 650
 651         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 652         msginfo->from = g_strdup(buf);
 653         msginfo->fromname = procheader_get_fromname(buf);
 654
 655         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 656         msginfo->subject = g_strdup(buf);
 657
 658         extract_parenthesis(msgid, '<', '>');
 659         remove_space(msgid);
 660         if (*msgid != '\0')
 661                 msginfo->msgid = g_strdup(msgid);
 662
 663         msginfo->references = g_strdup(ref);
 664         eliminate_parenthesis(ref, '(', ')');
 665         if ((p = strrchr(ref, '<')) != NULL) {
 666                 extract_parenthesis(p, '<', '>');
 667                 remove_space(p);
 668                 if (*p != '\0')
 669                         msginfo->inreplyto = g_strdup(p);
 670         }
 671
 672         /*
 673         msginfo->xref = g_strdup(xref);
 674         p = msginfo->xref+strlen(msginfo->xref) - 1;
 675         while (*p == '\r' || *p == '\n') {
 676                 *p = '\0';
 677                 p--;
 678         }
 679         */
 680
 681         return msginfo;
 682 }
 683
 684 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 685 {
 686         gchar *p;
 687         gchar *tmp;
 688         gint num;
 689
 690         p = strchr(xhdr_str, ' ');
 691         if (!p)
 692                 return NULL;
 693         else
 694                 p++;
 695
 696         num = atoi(xhdr_str);
 697         if (msginfo->msgnum != num) return NULL;
 698
 699         tmp = strchr(p, '\r');
 700         if (!tmp) tmp = strchr(p, '\n');
 701
 702         if (tmp)
 703                 return g_strndup(p, tmp - p);
 704         else
 705                 return g_strdup(p);
 706 }
 707
 708 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 709 {
 710         gchar * tmp;
 711         FILE * tmpfp;
 712         gchar buf[BUFFSIZE];
 713
 714         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 715                               G_DIR_SEPARATOR, (gint)msginfo);
 716         if (tmp == NULL)
 717                 return -1;
 718
 719         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 720                 FILE_OP_ERROR(tmp, "fopen");
 721                 return -1;
 722         }
 723         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 724                 FILE_OP_ERROR(tmp, "chmod");
 725                 g_warning("can't change file mode\n");
 726         }
 727
 728         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 729         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 730         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 731         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 732         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 733         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 734         get_rfc822_date(buf, sizeof(buf));
 735         fprintf(tmpfp, "Date: %s\r\n", buf);
 736         fprintf(tmpfp, "\r\n");
 737         fprintf(tmpfp, "removed with sylpheed\r\n");
 738
 739         fclose(tmpfp);
 740
 741         news_post(folder, tmp);
 742         remove(tmp);
 743
 744         g_free(tmp);
 745
 746         return 0;
 747 }
 748
 749 static gchar *news_folder_get_path(Folder *folder)
 750 {
 751         gchar *folder_path;
 752
 753         g_return_val_if_fail(folder->account != NULL, NULL);
 754
 755         folder_path = g_strconcat(get_news_cache_dir(),
 756                                   G_DIR_SEPARATOR_S,
 757                                   folder->account->nntp_server,
 758                                   NULL);
 759         return folder_path;
 760 }
 761
 762 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 763 {
 764         gchar *folder_path, *path;
 765
 766         g_return_val_if_fail(folder != NULL, NULL);
 767         g_return_val_if_fail(item != NULL, NULL);
 768         folder_path = news_folder_get_path(folder);
 769
 770         g_return_val_if_fail(folder_path != NULL, NULL);
 771         if (folder_path[0] == G_DIR_SEPARATOR) {
 772                 if (item->path)
 773                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 774                                            item->path, NULL);
 775                 else
 776                         path = g_strdup(folder_path);
 777         } else {
 778                 if (item->path)
 779                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 780                                            folder_path, G_DIR_SEPARATOR_S,
 781                                            item->path, NULL);
 782                 else
 783                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 784                                            folder_path, NULL);
 785         }
 786         g_free(folder_path);
 787
 788         return path;
 789 }
 790
 791 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 792 {
 793         NNTPSession *session;
 794         gint i, ok, num, first, last, nummsgs = 0;
 795         gchar *dir;
 796
 797         g_return_val_if_fail(item != NULL, -1);
 798         g_return_val_if_fail(item->folder != NULL, -1);
 799         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 800
 801         session = news_session_get(folder);
 802         g_return_val_if_fail(session != NULL, -1);
 803
 804         *old_uids_valid = TRUE;
 805
 806         ok = news_select_group(session, item->path, &num, &first, &last);
 807         if (ok != NN_SUCCESS) {
 808                 log_warning(_("can't set group: %s\n"), item->path);
 809                 return -1;
 810         }
 811
 812         dir = news_folder_get_path(folder);
 813         if (num <= 0)
 814                 remove_all_numbered_files(dir);
 815         else if (last < first)
 816                 log_warning(_("invalid article range: %d - %d\n"),
 817                             first, last);
 818         else {
 819                 for (i = first; i <= last; i++) {
 820                         *msgnum_list = g_slist_prepend(*msgnum_list,
 821                                                        GINT_TO_POINTER(i));
 822                         nummsgs++;
 823                 }
 824                 debug_print("removing old messages from %d to %d in %s\n",
 825                             first, last, dir);
 826                 remove_numbered_files(dir, 1, first - 1);
 827         }
 828         g_free(dir);
 829
 830         return nummsgs;
 831 }
 832
 833 #define READ_TO_LISTEND(hdr) \
 834         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 835                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 836                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 837                         return msginfo; \
 838                 } \
 839         }
 840
 841 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 842 {
 843         NNTPSession *session;
 844         MsgInfo *msginfo = NULL;
 845         gchar buf[NNTPBUFSIZE];
 846         gint ok;
 847
 848         session = news_session_get(folder);
 849         g_return_val_if_fail(session != NULL, NULL);
 850         g_return_val_if_fail(item != NULL, NULL);
 851         g_return_val_if_fail(item->folder != NULL, NULL);
 852         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 853
 854         log_message(_("getting xover %d in %s...\n"),
 855                     num, item->path);
 856         ok = nntp_xover(session, num, num);
 857         if (ok != NN_SUCCESS) {
 858                 log_warning(_("can't get xover\n"));
 859                 if (ok == NN_SOCKET) {
 860                         session_destroy(SESSION(session));
 861                         REMOTE_FOLDER(item->folder)->session = NULL;
 862                 }
 863                 return NULL;
 864         }
 865
 866         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 867                 log_warning(_("error occurred while getting xover.\n"));
 868                 return NULL;
 869         }
 870
 871         msginfo = news_parse_xover(buf);
 872         if (!msginfo) {
 873                 log_warning(_("invalid xover line: %s\n"), buf);
 874         }
 875
 876         READ_TO_LISTEND("xover");
 877
 878         if(!msginfo)
 879                 return NULL;
 880
 881         msginfo->folder = item;
 882         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 883         msginfo->flags.tmp_flags = MSG_NEWS;
 884         msginfo->newsgroups = g_strdup(item->path);
 885
 886         ok = nntp_xhdr(session, "to", num, num);
 887         if (ok != NN_SUCCESS) {
 888                 log_warning(_("can't get xhdr\n"));
 889                 if (ok == NN_SOCKET) {
 890                         session_destroy(SESSION(session));
 891                         REMOTE_FOLDER(item->folder)->session = NULL;
 892                 }
 893                 return msginfo;
 894         }
 895
 896         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 897                 log_warning(_("error occurred while getting xhdr.\n"));
 898                 return msginfo;
 899         }
 900
 901         msginfo->to = news_parse_xhdr(buf, msginfo);
 902
 903         READ_TO_LISTEND("xhdr (to)");
 904
 905         ok = nntp_xhdr(session, "cc", num, num);
 906         if (ok != NN_SUCCESS) {
 907                 log_warning(_("can't get xhdr\n"));
 908                 if (ok == NN_SOCKET) {
 909                         session_destroy(SESSION(session));
 910                         REMOTE_FOLDER(item->folder)->session = NULL;
 911                 }
 912                 return msginfo;
 913         }
 914
 915         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 916                 log_warning(_("error occurred while getting xhdr.\n"));
 917                 return msginfo;
 918         }
 919
 920         msginfo->cc = news_parse_xhdr(buf, msginfo);
 921
 922         READ_TO_LISTEND("xhdr (cc)");
 923
 924         return msginfo;
 925 }
 926
 927 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 928 {
 929         gchar buf[NNTPBUFSIZE];
 930         GSList *newlist = NULL;
 931         GSList *llast = NULL;
 932         MsgInfo *msginfo;
 933         guint count = 0, lines = (end - begin + 2) * 3;
 934         gint ok;
 935
 936         g_return_val_if_fail(session != NULL, NULL);
 937         g_return_val_if_fail(item != NULL, NULL);
 938
 939         log_message(_("getting xover %d - %d in %s...\n"),
 940                     begin, end, item->path);
 941         ok = nntp_xover(session, begin, end);
 942         if (ok != NN_SUCCESS) {
 943                 log_warning(_("can't get xover\n"));
 944                 if (ok == NN_SOCKET) {
 945                         session_destroy(SESSION(session));
 946                         REMOTE_FOLDER(item->folder)->session = NULL;
 947                 }
 948                 return NULL;
 949         }
 950
 951         for (;;) {
 952                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 953                         log_warning(_("error occurred while getting xover.\n"));
 954                         return newlist;
 955                 }
 956                 count++;
 957                 progressindicator_set_percentage
 958                         (PROGRESS_TYPE_NETWORK,
 959                          session->fetch_base_percentage +
 960                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 961
 962                 if (buf[0] == '.' && buf[1] == '\r') break;
 963
 964                 msginfo = news_parse_xover(buf);
 965                 if (!msginfo) {
 966                         log_warning(_("invalid xover line: %s\n"), buf);
 967                         continue;
 968                 }
 969
 970                 msginfo->folder = item;
 971                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 972                 msginfo->flags.tmp_flags = MSG_NEWS;
 973                 msginfo->newsgroups = g_strdup(item->path);
 974
 975                 if (!newlist)
 976                         llast = newlist = g_slist_append(newlist, msginfo);
 977                 else {
 978                         llast = g_slist_append(llast, msginfo);
 979                         llast = llast->next;
 980                 }
 981         }
 982
 983         ok = nntp_xhdr(session, "to", begin, end);
 984         if (ok != NN_SUCCESS) {
 985                 log_warning(_("can't get xhdr\n"));
 986                 if (ok == NN_SOCKET) {
 987                         session_destroy(SESSION(session));
 988                         REMOTE_FOLDER(item->folder)->session = NULL;
 989                 }
 990                 return newlist;
 991         }
 992
 993         llast = newlist;
 994
 995         for (;;) {
 996                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 997                         log_warning(_("error occurred while getting xhdr.\n"));
 998                         return newlist;
 999                 }
1000                 count++;
1001                 progressindicator_set_percentage
1002                         (PROGRESS_TYPE_NETWORK,
1003                          session->fetch_base_percentage +
1004                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1005
1006                 if (buf[0] == '.' && buf[1] == '\r') break;
1007                 if (!llast) {
1008                         g_warning("llast == NULL\n");
1009                         continue;
1010                 }
1011
1012                 msginfo = (MsgInfo *)llast->data;
1013                 msginfo->to = news_parse_xhdr(buf, msginfo);
1014
1015                 llast = llast->next;
1016         }
1017
1018         ok = nntp_xhdr(session, "cc", begin, end);
1019         if (ok != NN_SUCCESS) {
1020                 log_warning(_("can't get xhdr\n"));
1021                 if (ok == NN_SOCKET) {
1022                         session_destroy(SESSION(session));
1023                         REMOTE_FOLDER(item->folder)->session = NULL;
1024                 }
1025                 return newlist;
1026         }
1027
1028         llast = newlist;
1029
1030         for (;;) {
1031                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
1032                         log_warning(_("error occurred while getting xhdr.\n"));
1033                         return newlist;
1034                 }
1035                 count++;
1036                 progressindicator_set_percentage
1037                         (PROGRESS_TYPE_NETWORK,
1038                          session->fetch_base_percentage +
1039                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
1040
1041                 if (buf[0] == '.' && buf[1] == '\r') break;
1042                 if (!llast) {
1043                         g_warning("llast == NULL\n");
1044                         continue;
1045                 }
1046
1047                 msginfo = (MsgInfo *)llast->data;
1048                 msginfo->cc = news_parse_xhdr(buf, msginfo);
1049
1050                 llast = llast->next;
1051         }
1052
1053         session_set_access_time(SESSION(session));
1054
1055         return newlist;
1056 }
1057
1058 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1059 {
1060         NNTPSession *session;
1061         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1062         guint first, last, next;
1063         guint tofetch, fetched;
1064
1065         g_return_val_if_fail(folder != NULL, NULL);
1066         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1067         g_return_val_if_fail(msgnum_list != NULL, NULL);
1068         g_return_val_if_fail(item != NULL, NULL);
1069
1070         session = news_session_get(folder);
1071         g_return_val_if_fail(session != NULL, NULL);
1072
1073         tmp_msgnum_list = g_slist_copy(msgnum_list);
1074         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1075
1076         progressindicator_start(PROGRESS_TYPE_NETWORK);
1077         tofetch = g_slist_length(tmp_msgnum_list);
1078         fetched = 0;
1079
1080         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1081         last = first;
1082         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1083                 next = GPOINTER_TO_INT(elem->data);
1084                 if(next != (last + 1)) {
1085                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1086                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1087                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1088                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1089                         fetched = last - first + 1;
1090                         first = next;
1091                 }
1092                 last = next;
1093         }
1094         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1095         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1096         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1097         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1098
1099         g_slist_free(tmp_msgnum_list);
1100
1101         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1102
1103         return msginfo_list;
1104 }
1105
1106 gboolean news_scan_required(Folder *folder, FolderItem *item)
1107 {
1108         return TRUE;
1109 }