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