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