src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999-2003 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #  include "config.h"
  22 #endif
  23
  24 #include "defs.h"
  25
  26 #include <glib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdlib.h>
  30 #include <dirent.h>
  31 #include <unistd.h>
  32 #include <time.h>
  33
  34 #include "intl.h"
  35 #include "news.h"
  36 #include "nntp.h"
  37 #include "socket.h"
  38 #include "recv.h"
  39 #include "procmsg.h"
  40 #include "procheader.h"
  41 #include "folder.h"
  42 #include "session.h"
  43 #include "statusbar.h"
  44 #include "codeconv.h"
  45 #include "utils.h"
  46 #include "prefs_common.h"
  47 #include "prefs_account.h"
  48 #include "inputdialog.h"
  49 #include "log.h"
  50 #include "progressindicator.h"
  51 #if USE_OPENSSL
  52 #  include "ssl.h"
  53 #endif
  54
  55 #define NNTP_PORT       119
  56 #if USE_OPENSSL
  57 #define NNTPS_PORT      563
  58 #endif
  59
  60 static Folder *news_folder_new(const gchar * name, const gchar * folder);
  61 static void news_folder_destroy(Folder * folder);
  62
  63 static gchar *news_fetch_msg(Folder * folder, FolderItem * item, gint num);
  64
  65 static void news_folder_init             (Folder        *folder,
  66                                           const gchar   *name,
  67                                           const gchar   *path);
  68
  69 #if USE_OPENSSL
  70 static Session *news_session_new         (const gchar   *server,
  71                                           gushort        port,
  72                                           const gchar   *userid,
  73                                           const gchar   *passwd,
  74                                           SSLType        ssl_type);
  75 #else
  76 static Session *news_session_new         (const gchar   *server,
  77                                           gushort        port,
  78                                           const gchar   *userid,
  79                                           const gchar   *passwd);
  80 #endif
  81
  82 static gint news_get_article_cmd         (NNTPSession   *session,
  83                                           const gchar   *cmd,
  84                                           gint           num,
  85                                           gchar         *filename);
  86 static gint news_get_article             (NNTPSession   *session,
  87                                           gint           num,
  88                                           gchar         *filename);
  89
  90 static gint news_select_group            (NNTPSession   *session,
  91                                           const gchar   *group,
  92                                           gint          *num,
  93                                           gint          *first,
  94                                           gint          *last);
  95 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  96 static gchar *news_parse_xhdr            (const gchar   *xhdr_str,
  97                                           MsgInfo       *msginfo);
  98 gint news_get_num_list                   (Folder        *folder,
  99                                           FolderItem    *item,
 100                                           GSList       **list,
 101                                           gboolean      *old_uids_valid);
 102 MsgInfo *news_get_msginfo                (Folder        *folder,
 103                                           FolderItem    *item,
 104                                           gint           num);
 105 GSList *news_get_msginfos                (Folder        *folder,
 106                                           FolderItem    *item,
 107                                           GSList        *msgnum_list);
 108 gboolean news_scan_required              (Folder        *folder,
 109                                           FolderItem    *item);
 110
 111 gint news_post_stream                    (Folder        *folder,
 112                                           FILE          *fp);
 113 static gchar *news_folder_get_path       (Folder        *folder);
 114 gchar *news_item_get_path                (Folder        *folder,
 115                                           FolderItem    *item);
 116
 117 FolderClass news_class =
 118 {
 119         F_NEWS,
 120         "news",
 121         "News",
 122
 123         /* Folder functions */
 124         news_folder_new,
 125         news_folder_destroy,
 126         NULL,
 127         NULL,
 128
 129         /* FolderItem functions */
 130         NULL,
 131         NULL,
 132         news_item_get_path,
 133         NULL,
 134         NULL,
 135         NULL,
 136         NULL,
 137         news_get_num_list,
 138         NULL,
 139         NULL,
 140         NULL,
 141         news_scan_required,
 142
 143         /* Message functions */
 144         news_get_msginfo,
 145         news_get_msginfos,
 146         news_fetch_msg,
 147         NULL,
 148         NULL,
 149         NULL,
 150         NULL,
 151         NULL,
 152         NULL,
 153         NULL,
 154         NULL,
 155 };
 156
 157 FolderClass *news_get_class(void)
 158 {
 159         return &news_class;
 160 }
 161
 162 Folder *news_folder_new(const gchar *name, const gchar *path)
 163 {
 164         Folder *folder;
 165
 166         folder = (Folder *)g_new0(NewsFolder, 1);
 167         folder->klass = &news_class;
 168         news_folder_init(folder, name, path);
 169
 170         return folder;
 171 }
 172
 173 void news_folder_destroy(Folder *folder)
 174 {
 175         gchar *dir;
 176
 177         dir = news_folder_get_path(folder);
 178         if (is_dir_exist(dir))
 179                 remove_dir_recursive(dir);
 180         g_free(dir);
 181
 182         folder_remote_folder_destroy(REMOTE_FOLDER(folder));
 183 }
 184
 185 static void news_folder_init(Folder *folder, const gchar *name,
 186                              const gchar *path)
 187 {
 188         folder_remote_folder_init(folder, name, path);
 189 }
 190
 191 #if USE_OPENSSL
 192 static Session *news_session_new(const gchar *server, gushort port,
 193                                  const gchar *userid, const gchar *passwd,
 194                                  SSLType ssl_type)
 195 #else
 196 static Session *news_session_new(const gchar *server, gushort port,
 197                                  const gchar *userid, const gchar *passwd)
 198 #endif
 199 {
 200         gchar buf[NNTPBUFSIZE];
 201         Session *session;
 202
 203         g_return_val_if_fail(server != NULL, NULL);
 204
 205         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
 206
 207 #if USE_OPENSSL
 208         session = nntp_session_new(server, port, buf, userid, passwd, ssl_type);
 209 #else
 210         session = nntp_session_new(server, port, buf, userid, passwd);
 211 #endif
 212
 213         return session;
 214 }
 215
 216 static Session *news_session_new_for_folder(Folder *folder)
 217 {
 218         Session *session;
 219         PrefsAccount *ac;
 220         const gchar *userid = NULL;
 221         gchar *passwd = NULL;
 222         gushort port;
 223         gchar buf[NNTPBUFSIZE];
 224
 225         g_return_val_if_fail(folder != NULL, NULL);
 226         g_return_val_if_fail(folder->account != NULL, NULL);
 227
 228         ac = folder->account;
 229         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 230                 userid = ac->userid;
 231                 if (ac->passwd && ac->passwd[0])
 232                         passwd = g_strdup(ac->passwd);
 233                 else
 234                         passwd = input_dialog_query_password(ac->nntp_server,
 235                                                              userid);
 236         }
 237
 238 #if USE_OPENSSL
 239         port = ac->set_nntpport ? ac->nntpport
 240                 : ac->ssl_nntp ? NNTPS_PORT : NNTP_PORT;
 241         session = news_session_new(ac->nntp_server, port, userid, passwd,
 242                                    ac->ssl_nntp);
 243 #else
 244         port = ac->set_nntpport ? ac->nntpport : NNTP_PORT;
 245         session = news_session_new(ac->nntp_server, port, userid, passwd);
 246 #endif
 247         if ((session != NULL) && ac->use_nntp_auth && ac->use_nntp_auth_onconnect)
 248                 nntp_forceauth(NNTP_SESSION(session), buf, userid, passwd);
 249
 250         g_free(passwd);
 251
 252         return session;
 253 }
 254
 255 NNTPSession *news_session_get(Folder *folder)
 256 {
 257         RemoteFolder *rfolder = REMOTE_FOLDER(folder);
 258
 259         g_return_val_if_fail(folder != NULL, NULL);
 260         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 261         g_return_val_if_fail(folder->account != NULL, NULL);
 262
 263         if (!rfolder->session) {
 264                 rfolder->session = news_session_new_for_folder(folder);
 265                 return NNTP_SESSION(rfolder->session);
 266         }
 267
 268         if (time(NULL) - rfolder->session->last_access_time < SESSION_TIMEOUT) {
 269                 rfolder->session->last_access_time = time(NULL);
 270                 return NNTP_SESSION(rfolder->session);
 271         }
 272
 273         if (nntp_mode(NNTP_SESSION(rfolder->session), FALSE)
 274             != NN_SUCCESS) {
 275                 log_warning("NNTP connection to %s:%d has been"
 276                               " disconnected. Reconnecting...\n",
 277                             folder->account->nntp_server,
 278                             folder->account->set_nntpport ?
 279                             folder->account->nntpport : NNTP_PORT);
 280                 session_destroy(rfolder->session);
 281                 rfolder->session = news_session_new_for_folder(folder);
 282         }
 283
 284         if (rfolder->session)
 285                 rfolder->session->last_access_time = time(NULL);
 286         return NNTP_SESSION(rfolder->session);
 287 }
 288
 289 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 290 {
 291         gchar *path, *filename;
 292         NNTPSession *session;
 293         gint ok;
 294
 295         g_return_val_if_fail(folder != NULL, NULL);
 296         g_return_val_if_fail(item != NULL, NULL);
 297
 298         path = folder_item_get_path(item);
 299         if (!is_dir_exist(path))
 300                 make_dir_hier(path);
 301         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 302         g_free(path);
 303
 304         if (is_file_exist(filename)) {
 305                 debug_print("article %d has been already cached.\n", num);
 306                 return filename;
 307         }
 308
 309         session = news_session_get(folder);
 310         if (!session) {
 311                 g_free(filename);
 312                 return NULL;
 313         }
 314
 315         ok = news_select_group(session, item->path, NULL, NULL, NULL);
 316         if (ok != NN_SUCCESS) {
 317                 g_warning("can't select group %s\n", item->path);
 318                 g_free(filename);
 319                 return NULL;
 320         }
 321
 322         debug_print("getting article %d...\n", num);
 323         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 324                               num, filename);
 325         if (ok < 0) {
 326                 g_warning("can't read article %d\n", num);
 327                 session_destroy(SESSION(session));
 328                 REMOTE_FOLDER(folder)->session = NULL;
 329                 g_free(filename);
 330                 return NULL;
 331         }
 332
 333         return filename;
 334 }
 335
 336 static NewsGroupInfo *news_group_info_new(const gchar *name,
 337                                           gint first, gint last, gchar type)
 338 {
 339         NewsGroupInfo *ginfo;
 340
 341         ginfo = g_new(NewsGroupInfo, 1);
 342         ginfo->name = g_strdup(name);
 343         ginfo->first = first;
 344         ginfo->last = last;
 345         ginfo->type = type;
 346
 347         return ginfo;
 348 }
 349
 350 static void news_group_info_free(NewsGroupInfo *ginfo)
 351 {
 352         g_free(ginfo->name);
 353         g_free(ginfo);
 354 }
 355
 356 static gint news_group_info_compare(NewsGroupInfo *ginfo1,
 357                                     NewsGroupInfo *ginfo2)
 358 {
 359         return g_strcasecmp(ginfo1->name, ginfo2->name);
 360 }
 361
 362 GSList *news_get_group_list(Folder *folder)
 363 {
 364         gchar *path, *filename;
 365         FILE *fp;
 366         GSList *list = NULL;
 367         GSList *last = NULL;
 368         gchar buf[NNTPBUFSIZE];
 369
 370         g_return_val_if_fail(folder != NULL, NULL);
 371         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
 372
 373         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 374         if (!is_dir_exist(path))
 375                 make_dir_hier(path);
 376         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 377         g_free(path);
 378
 379         if ((fp = fopen(filename, "rb")) == NULL) {
 380                 NNTPSession *session;
 381
 382                 session = news_session_get(folder);
 383                 if (!session) {
 384                         g_free(filename);
 385                         return NULL;
 386                 }
 387
 388                 if (nntp_list(session) != NN_SUCCESS) {
 389                         g_free(filename);
 390                         return NULL;
 391                 }
 392                 if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 393                         log_warning("can't retrieve newsgroup list\n");
 394                         session_destroy(SESSION(session));
 395                         REMOTE_FOLDER(folder)->session = NULL;
 396                         g_free(filename);
 397                         return NULL;
 398                 }
 399
 400                 if ((fp = fopen(filename, "rb")) == NULL) {
 401                         FILE_OP_ERROR(filename, "fopen");
 402                         g_free(filename);
 403                         return NULL;
 404                 }
 405         }
 406
 407         while (fgets(buf, sizeof(buf), fp) != NULL) {
 408                 gchar *p = buf;
 409                 gchar *name;
 410                 gint last_num;
 411                 gint first_num;
 412                 gchar type;
 413                 NewsGroupInfo *ginfo;
 414
 415                 p = strchr(p, ' ');
 416                 if (!p) continue;
 417                 *p = '\0';
 418                 p++;
 419                 name = buf;
 420
 421                 if (sscanf(p, "%d %d %c", &last_num, &first_num, &type) < 3)
 422                         continue;
 423
 424                 ginfo = news_group_info_new(name, first_num, last_num, type);
 425
 426                 if (!last)
 427                         last = list = g_slist_append(NULL, ginfo);
 428                 else {
 429                         last = g_slist_append(last, ginfo);
 430                         last = last->next;
 431                 }
 432         }
 433
 434         fclose(fp);
 435         g_free(filename);
 436
 437         list = g_slist_sort(list, (GCompareFunc)news_group_info_compare);
 438
 439         return list;
 440 }
 441
 442 void news_group_list_free(GSList *group_list)
 443 {
 444         GSList *cur;
 445
 446         if (!group_list) return;
 447
 448         for (cur = group_list; cur != NULL; cur = cur->next)
 449                 news_group_info_free((NewsGroupInfo *)cur->data);
 450         g_slist_free(group_list);
 451 }
 452
 453 void news_remove_group_list_cache(Folder *folder)
 454 {
 455         gchar *path, *filename;
 456
 457         g_return_if_fail(folder != NULL);
 458         g_return_if_fail(FOLDER_CLASS(folder) == &news_class);
 459
 460         path = folder_item_get_path(FOLDER_ITEM(folder->node->data));
 461         filename = g_strconcat(path, G_DIR_SEPARATOR_S, NEWSGROUP_LIST, NULL);
 462         g_free(path);
 463
 464         if (is_file_exist(filename)) {
 465                 if (remove(filename) < 0)
 466                         FILE_OP_ERROR(filename, "remove");
 467         }
 468         g_free(filename);
 469 }
 470
 471 gint news_post(Folder *folder, const gchar *file)
 472 {
 473         FILE *fp;
 474         gint ok;
 475
 476         g_return_val_if_fail(folder != NULL, -1);
 477         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 478         g_return_val_if_fail(file != NULL, -1);
 479
 480         if ((fp = fopen(file, "rb")) == NULL) {
 481                 FILE_OP_ERROR(file, "fopen");
 482                 return -1;
 483         }
 484
 485         ok = news_post_stream(folder, fp);
 486
 487         fclose(fp);
 488
 489         return ok;
 490 }
 491
 492 gint news_post_stream(Folder *folder, FILE *fp)
 493 {
 494         NNTPSession *session;
 495         gint ok;
 496
 497         g_return_val_if_fail(folder != NULL, -1);
 498         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 499         g_return_val_if_fail(fp != NULL, -1);
 500
 501         session = news_session_get(folder);
 502         if (!session) return -1;
 503
 504         ok = nntp_post(session, fp);
 505         if (ok != NN_SUCCESS) {
 506                 log_warning("can't post article.\n");
 507                 return -1;
 508         }
 509
 510         return 0;
 511 }
 512
 513 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 514                                  gint num, gchar *filename)
 515 {
 516         gchar *msgid;
 517
 518         if (nntp_get_article(session, cmd, num, &msgid)
 519             != NN_SUCCESS)
 520                 return -1;
 521
 522         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 523         g_free(msgid);
 524
 525         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 526                 log_warning("can't retrieve article %d\n", num);
 527                 return -1;
 528         }
 529
 530         return 0;
 531 }
 532
 533 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 534 {
 535         return news_get_article_cmd(session, "ARTICLE", num, filename);
 536 }
 537
 538 /**
 539  * news_select_group:
 540  * @session: Active NNTP session.
 541  * @group: Newsgroup name.
 542  * @num: Estimated number of articles.
 543  * @first: First article number.
 544  * @last: Last article number.
 545  *
 546  * Select newsgroup @group with the GROUP command if it is not already
 547  * selected in @session, or article numbers need to be returned.
 548  *
 549  * Return value: NNTP result code.
 550  **/
 551 static gint news_select_group(NNTPSession *session, const gchar *group,
 552                               gint *num, gint *first, gint *last)
 553 {
 554         gint ok;
 555         gint num_, first_, last_;
 556
 557         if (!num || !first || !last) {
 558                 if (session->group && g_strcasecmp(session->group, group) == 0)
 559                         return NN_SUCCESS;
 560                 num = &num_;
 561                 first = &first_;
 562                 last = &last_;
 563         }
 564
 565         g_free(session->group);
 566         session->group = NULL;
 567
 568         ok = nntp_group(session, group, num, first, last);
 569         if (ok == NN_SUCCESS)
 570                 session->group = g_strdup(group);
 571
 572         return ok;
 573 }
 574
 575 #define PARSE_ONE_PARAM(p, srcp) \
 576 { \
 577         p = strchr(srcp, '\t'); \
 578         if (!p) return NULL; \
 579         else \
 580                 *p++ = '\0'; \
 581 }
 582
 583 static MsgInfo *news_parse_xover(const gchar *xover_str)
 584 {
 585         MsgInfo *msginfo;
 586         gchar buf[NNTPBUFSIZE];
 587         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp, *xref;
 588         gchar *p;
 589         gint num, size_int, line_int;
 590         gchar *xover_buf;
 591
 592         Xstrdup_a(xover_buf, xover_str, return NULL);
 593
 594         PARSE_ONE_PARAM(subject, xover_buf);
 595         PARSE_ONE_PARAM(sender, subject);
 596         PARSE_ONE_PARAM(date, sender);
 597         PARSE_ONE_PARAM(msgid, date);
 598         PARSE_ONE_PARAM(ref, msgid);
 599         PARSE_ONE_PARAM(size, ref);
 600         PARSE_ONE_PARAM(line, size);
 601         /*
 602          * PARSE_ONE_PARAM(xref, line);
 603          *
 604          * if we parse extra headers we should first examine the
 605          * LIST OVERVIEW.FMT response from the server. See
 606          * RFC2980 for details
 607          */
 608
 609         tmp = strchr(line, '\t');
 610         if (!tmp) tmp = strchr(line, '\r');
 611         if (!tmp) tmp = strchr(line, '\n');
 612         if (tmp) *tmp = '\0';
 613
 614         num = atoi(xover_str);
 615         size_int = atoi(size);
 616         line_int = atoi(line);
 617
 618         /* set MsgInfo */
 619         msginfo = procmsg_msginfo_new();
 620         msginfo->msgnum = num;
 621         msginfo->size = size_int;
 622
 623         msginfo->date = g_strdup(date);
 624         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 625
 626         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 627         msginfo->from = g_strdup(buf);
 628         msginfo->fromname = procheader_get_fromname(buf);
 629
 630         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 631         msginfo->subject = g_strdup(buf);
 632
 633         extract_parenthesis(msgid, '<', '>');
 634         remove_space(msgid);
 635         if (*msgid != '\0')
 636                 msginfo->msgid = g_strdup(msgid);
 637
 638         msginfo->references = g_strdup(ref);
 639         eliminate_parenthesis(ref, '(', ')');
 640         if ((p = strrchr(ref, '<')) != NULL) {
 641                 extract_parenthesis(p, '<', '>');
 642                 remove_space(p);
 643                 if (*p != '\0')
 644                         msginfo->inreplyto = g_strdup(p);
 645         }
 646
 647         /*
 648         msginfo->xref = g_strdup(xref);
 649         p = msginfo->xref+strlen(msginfo->xref) - 1;
 650         while (*p == '\r' || *p == '\n') {
 651                 *p = '\0';
 652                 p--;
 653         }
 654         */
 655
 656         return msginfo;
 657 }
 658
 659 static gchar *news_parse_xhdr(const gchar *xhdr_str, MsgInfo *msginfo)
 660 {
 661         gchar *p;
 662         gchar *tmp;
 663         gint num;
 664
 665         p = strchr(xhdr_str, ' ');
 666         if (!p)
 667                 return NULL;
 668         else
 669                 p++;
 670
 671         num = atoi(xhdr_str);
 672         if (msginfo->msgnum != num) return NULL;
 673
 674         tmp = strchr(p, '\r');
 675         if (!tmp) tmp = strchr(p, '\n');
 676
 677         if (tmp)
 678                 return g_strndup(p, tmp - p);
 679         else
 680                 return g_strdup(p);
 681 }
 682
 683 gint news_cancel_article(Folder * folder, MsgInfo * msginfo)
 684 {
 685         gchar * tmp;
 686         FILE * tmpfp;
 687         gchar buf[BUFFSIZE];
 688
 689         tmp = g_strdup_printf("%s%ctmp%d", g_get_tmp_dir(),
 690                               G_DIR_SEPARATOR, (gint)msginfo);
 691         if (tmp == NULL)
 692                 return -1;
 693
 694         if ((tmpfp = fopen(tmp, "wb")) == NULL) {
 695                 FILE_OP_ERROR(tmp, "fopen");
 696                 return -1;
 697         }
 698         if (change_file_mode_rw(tmpfp, tmp) < 0) {
 699                 FILE_OP_ERROR(tmp, "chmod");
 700                 g_warning("can't change file mode\n");
 701         }
 702
 703         fprintf(tmpfp, "From: %s\r\n", msginfo->from);
 704         fprintf(tmpfp, "Newsgroups: %s\r\n", msginfo->newsgroups);
 705         fprintf(tmpfp, "Subject: cmsg cancel <%s>\r\n", msginfo->msgid);
 706         fprintf(tmpfp, "Control: cancel <%s>\r\n", msginfo->msgid);
 707         fprintf(tmpfp, "Approved: %s\r\n", msginfo->from);
 708         fprintf(tmpfp, "X-Cancelled-by: %s\r\n", msginfo->from);
 709         get_rfc822_date(buf, sizeof(buf));
 710         fprintf(tmpfp, "Date: %s\r\n", buf);
 711         fprintf(tmpfp, "\r\n");
 712         fprintf(tmpfp, "removed with sylpheed\r\n");
 713
 714         fclose(tmpfp);
 715
 716         news_post(folder, tmp);
 717         remove(tmp);
 718
 719         g_free(tmp);
 720
 721         return 0;
 722 }
 723
 724 static gchar *news_folder_get_path(Folder *folder)
 725 {
 726         gchar *folder_path;
 727
 728         g_return_val_if_fail(folder->account != NULL, NULL);
 729
 730         folder_path = g_strconcat(get_news_cache_dir(),
 731                                   G_DIR_SEPARATOR_S,
 732                                   folder->account->nntp_server,
 733                                   NULL);
 734         return folder_path;
 735 }
 736
 737 gchar *news_item_get_path(Folder *folder, FolderItem *item)
 738 {
 739         gchar *folder_path, *path;
 740
 741         g_return_val_if_fail(folder != NULL, NULL);
 742         g_return_val_if_fail(item != NULL, NULL);
 743         folder_path = news_folder_get_path(folder);
 744
 745         g_return_val_if_fail(folder_path != NULL, NULL);
 746         if (folder_path[0] == G_DIR_SEPARATOR) {
 747                 if (item->path)
 748                         path = g_strconcat(folder_path, G_DIR_SEPARATOR_S,
 749                                            item->path, NULL);
 750                 else
 751                         path = g_strdup(folder_path);
 752         } else {
 753                 if (item->path)
 754                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 755                                            folder_path, G_DIR_SEPARATOR_S,
 756                                            item->path, NULL);
 757                 else
 758                         path = g_strconcat(get_home_dir(), G_DIR_SEPARATOR_S,
 759                                            folder_path, NULL);
 760         }
 761         g_free(folder_path);
 762
 763         return path;
 764 }
 765
 766 gint news_get_num_list(Folder *folder, FolderItem *item, GSList **msgnum_list, gboolean *old_uids_valid)
 767 {
 768         NNTPSession *session;
 769         gint i, ok, num, first, last, nummsgs = 0;
 770         gchar *dir;
 771
 772         g_return_val_if_fail(item != NULL, -1);
 773         g_return_val_if_fail(item->folder != NULL, -1);
 774         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, -1);
 775
 776         session = news_session_get(folder);
 777         g_return_val_if_fail(session != NULL, -1);
 778
 779         *old_uids_valid = TRUE;
 780
 781         ok = news_select_group(session, item->path, &num, &first, &last);
 782         if (ok != NN_SUCCESS) {
 783                 log_warning(_("can't set group: %s\n"), item->path);
 784                 return -1;
 785         }
 786
 787         if (num <= 0) {
 788                 remove_all_numbered_files(dir);
 789                 return 0;
 790         }
 791
 792         if(last < first) {
 793                 log_warning(_("invalid article range: %d - %d\n"),
 794                             first, last);
 795                 return 0;
 796         }
 797
 798         for(i = first; i <= last; i++) {
 799                 *msgnum_list = g_slist_prepend(*msgnum_list, GINT_TO_POINTER(i));
 800                 nummsgs++;
 801         }
 802
 803         dir = folder_item_get_path(item);
 804         debug_print("removing old messages from %d to %d in %s\n", first, last, dir);
 805         remove_numbered_files(dir, 1, first - 1);
 806         g_free(dir);
 807
 808         return nummsgs;
 809 }
 810
 811 #define READ_TO_LISTEND(hdr) \
 812         while (!(buf[0] == '.' && buf[1] == '\r')) { \
 813                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) { \
 814                         log_warning(_("error occurred while getting %s.\n"), hdr); \
 815                         return msginfo; \
 816                 } \
 817         }
 818
 819 MsgInfo *news_get_msginfo(Folder *folder, FolderItem *item, gint num)
 820 {
 821         NNTPSession *session;
 822         MsgInfo *msginfo = NULL;
 823         gchar buf[NNTPBUFSIZE];
 824
 825         session = news_session_get(folder);
 826         g_return_val_if_fail(session != NULL, NULL);
 827         g_return_val_if_fail(item != NULL, NULL);
 828         g_return_val_if_fail(item->folder != NULL, NULL);
 829         g_return_val_if_fail(FOLDER_CLASS(item->folder) == &news_class, NULL);
 830
 831         log_message(_("getting xover %d in %s...\n"),
 832                     num, item->path);
 833         if (nntp_xover(session, num, num) != NN_SUCCESS) {
 834                 log_warning(_("can't get xover\n"));
 835                 return NULL;
 836         }
 837
 838         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 839                 log_warning(_("error occurred while getting xover.\n"));
 840                 return NULL;
 841         }
 842
 843         msginfo = news_parse_xover(buf);
 844         if (!msginfo) {
 845                 log_warning(_("invalid xover line: %s\n"), buf);
 846         }
 847
 848         READ_TO_LISTEND("xover");
 849
 850         if(!msginfo)
 851                 return NULL;
 852
 853         msginfo->folder = item;
 854         msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 855         msginfo->flags.tmp_flags = MSG_NEWS;
 856         msginfo->newsgroups = g_strdup(item->path);
 857
 858         if (nntp_xhdr(session, "to", num, num) != NN_SUCCESS) {
 859                 log_warning(_("can't get xhdr\n"));
 860                 return msginfo;
 861         }
 862
 863         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 864                 log_warning(_("error occurred while getting xhdr.\n"));
 865                 return msginfo;
 866         }
 867
 868         msginfo->to = news_parse_xhdr(buf, msginfo);
 869
 870         READ_TO_LISTEND("xhdr (to)");
 871
 872         if (nntp_xhdr(session, "cc", num, num) != NN_SUCCESS) {
 873                 log_warning(_("can't get xhdr\n"));
 874                 return msginfo;
 875         }
 876
 877         if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 878                 log_warning(_("error occurred while getting xhdr.\n"));
 879                 return msginfo;
 880         }
 881
 882         msginfo->cc = news_parse_xhdr(buf, msginfo);
 883
 884         READ_TO_LISTEND("xhdr (cc)");
 885
 886         return msginfo;
 887 }
 888
 889 static GSList *news_get_msginfos_for_range(NNTPSession *session, FolderItem *item, guint begin, guint end)
 890 {
 891         gchar buf[NNTPBUFSIZE];
 892         GSList *newlist = NULL;
 893         GSList *llast = NULL;
 894         MsgInfo *msginfo;
 895         guint count = 0, lines = (end - begin + 2) * 3;
 896
 897         g_return_val_if_fail(session != NULL, NULL);
 898         g_return_val_if_fail(item != NULL, NULL);
 899
 900         log_message(_("getting xover %d - %d in %s...\n"),
 901                     begin, end, item->path);
 902         if (nntp_xover(session, begin, end) != NN_SUCCESS) {
 903                 log_warning(_("can't get xover\n"));
 904                 return NULL;
 905         }
 906
 907         for (;;) {
 908                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 909                         log_warning(_("error occurred while getting xover.\n"));
 910                         return newlist;
 911                 }
 912                 count++;
 913                 progressindicator_set_percentage
 914                         (PROGRESS_TYPE_NETWORK,
 915                          session->fetch_base_percentage +
 916                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 917
 918                 if (buf[0] == '.' && buf[1] == '\r') break;
 919
 920                 msginfo = news_parse_xover(buf);
 921                 if (!msginfo) {
 922                         log_warning(_("invalid xover line: %s\n"), buf);
 923                         continue;
 924                 }
 925
 926                 msginfo->folder = item;
 927                 msginfo->flags.perm_flags = MSG_NEW|MSG_UNREAD;
 928                 msginfo->flags.tmp_flags = MSG_NEWS;
 929                 msginfo->newsgroups = g_strdup(item->path);
 930
 931                 if (!newlist)
 932                         llast = newlist = g_slist_append(newlist, msginfo);
 933                 else {
 934                         llast = g_slist_append(llast, msginfo);
 935                         llast = llast->next;
 936                 }
 937         }
 938
 939         if (nntp_xhdr(session, "to", begin, end) != NN_SUCCESS) {
 940                 log_warning(_("can't get xhdr\n"));
 941                 return newlist;
 942         }
 943
 944         llast = newlist;
 945
 946         for (;;) {
 947                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 948                         log_warning(_("error occurred while getting xhdr.\n"));
 949                         return newlist;
 950                 }
 951                 count++;
 952                 progressindicator_set_percentage
 953                         (PROGRESS_TYPE_NETWORK,
 954                          session->fetch_base_percentage +
 955                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 956
 957                 if (buf[0] == '.' && buf[1] == '\r') break;
 958                 if (!llast) {
 959                         g_warning("llast == NULL\n");
 960                         continue;
 961                 }
 962
 963                 msginfo = (MsgInfo *)llast->data;
 964                 msginfo->to = news_parse_xhdr(buf, msginfo);
 965
 966                 llast = llast->next;
 967         }
 968
 969         if (nntp_xhdr(session, "cc", begin, end) != NN_SUCCESS) {
 970                 log_warning(_("can't get xhdr\n"));
 971                 return newlist;
 972         }
 973
 974         llast = newlist;
 975
 976         for (;;) {
 977                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 978                         log_warning(_("error occurred while getting xhdr.\n"));
 979                         return newlist;
 980                 }
 981                 count++;
 982                 progressindicator_set_percentage
 983                         (PROGRESS_TYPE_NETWORK,
 984                          session->fetch_base_percentage +
 985                          (((gfloat) count) / ((gfloat) lines)) * session->fetch_total_percentage);
 986
 987                 if (buf[0] == '.' && buf[1] == '\r') break;
 988                 if (!llast) {
 989                         g_warning("llast == NULL\n");
 990                         continue;
 991                 }
 992
 993                 msginfo = (MsgInfo *)llast->data;
 994                 msginfo->cc = news_parse_xhdr(buf, msginfo);
 995
 996                 llast = llast->next;
 997         }
 998
 999         return newlist;
1000 }
1001
1002 GSList *news_get_msginfos(Folder *folder, FolderItem *item, GSList *msgnum_list)
1003 {
1004         NNTPSession *session;
1005         GSList *elem, *msginfo_list = NULL, *tmp_msgnum_list, *tmp_msginfo_list;
1006         guint first, last, next;
1007         guint tofetch, fetched;
1008
1009         g_return_val_if_fail(folder != NULL, NULL);
1010         g_return_val_if_fail(FOLDER_CLASS(folder) == &news_class, NULL);
1011         g_return_val_if_fail(msgnum_list != NULL, NULL);
1012         g_return_val_if_fail(item != NULL, NULL);
1013
1014         session = news_session_get(folder);
1015         g_return_val_if_fail(session != NULL, NULL);
1016
1017         tmp_msgnum_list = g_slist_copy(msgnum_list);
1018         tmp_msgnum_list = g_slist_sort(tmp_msgnum_list, g_int_compare);
1019
1020         progressindicator_start(PROGRESS_TYPE_NETWORK);
1021         tofetch = g_slist_length(tmp_msgnum_list);
1022         fetched = 0;
1023
1024         first = GPOINTER_TO_INT(tmp_msgnum_list->data);
1025         last = first;
1026         for(elem = g_slist_next(tmp_msgnum_list); elem != NULL; elem = g_slist_next(elem)) {
1027                 next = GPOINTER_TO_INT(elem->data);
1028                 if(next != (last + 1)) {
1029                         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1030                         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1031                         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1032                         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1033                         fetched = last - first + 1;
1034                         first = next;
1035                 }
1036                 last = next;
1037         }
1038         session->fetch_base_percentage = ((gfloat) fetched) / ((gfloat) tofetch);
1039         session->fetch_total_percentage = ((gfloat) (last - first + 1)) / ((gfloat) tofetch);
1040         tmp_msginfo_list = news_get_msginfos_for_range(session, item, first, last);
1041         msginfo_list = g_slist_concat(msginfo_list, tmp_msginfo_list);
1042
1043         g_slist_free(tmp_msgnum_list);
1044
1045         progressindicator_stop(PROGRESS_TYPE_NETWORK);
1046
1047         return msginfo_list;
1048 }
1049
1050 gboolean news_scan_required(Folder *folder, FolderItem *item)
1051 {
1052         return TRUE;
1053 }