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