src/news.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999,2000 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 <glib.h>
  25 #include <stdio.h>
  26 #include <string.h>
  27 #include <stdlib.h>
  28 #include <dirent.h>
  29 #include <unistd.h>
  30
  31 #include "defs.h"
  32 #include "intl.h"
  33 #include "news.h"
  34 #include "nntp.h"
  35 #include "socket.h"
  36 #include "recv.h"
  37 #include "procmsg.h"
  38 #include "procheader.h"
  39 #include "folder.h"
  40 #include "session.h"
  41 #include "statusbar.h"
  42 #include "codeconv.h"
  43 #include "utils.h"
  44 #include "prefs_common.h"
  45 #include "prefs_account.h"
  46 #include "inputdialog.h"
  47 #include "alertpanel.h"
  48
  49 static gint news_get_article_cmd         (NNTPSession   *session,
  50                                           const gchar   *cmd,
  51                                           gint           num,
  52                                           gchar         *filename);
  53 static gint news_get_article             (NNTPSession   *session,
  54                                           gint           num,
  55                                           gchar         *filename);
  56 static gint news_get_header              (NNTPSession   *session,
  57                                           gint           num,
  58                                           gchar         *filename);
  59
  60 static GSList *news_get_uncached_articles(NNTPSession   *session,
  61                                           FolderItem    *item,
  62                                           gint           cache_last,
  63                                           gint          *rfirst,
  64                                           gint          *rlast);
  65 static MsgInfo *news_parse_xover         (const gchar   *xover_str);
  66 static GSList *news_delete_old_article   (GSList        *alist,
  67                                           gint           first);
  68 static void news_delete_all_article      (FolderItem    *item);
  69
  70
  71 static Session *news_session_new(const gchar *server, gushort port,
  72                                  const gchar *userid, const gchar *passwd)
  73 {
  74         gchar buf[NNTPBUFSIZE];
  75         NNTPSession *session;
  76         NNTPSockInfo *nntp_sock;
  77
  78         g_return_val_if_fail(server != NULL, NULL);
  79
  80         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
  81
  82         if (userid && passwd)
  83                 nntp_sock = nntp_open_auth(server, port, buf, userid, passwd);
  84         else
  85                 nntp_sock = nntp_open(server, port, buf);
  86         if (nntp_sock < 0)
  87                 return NULL;
  88
  89         session = g_new(NNTPSession, 1);
  90         SESSION(session)->type      = SESSION_NEWS;
  91         SESSION(session)->server    = g_strdup(server);
  92         session->nntp_sock          = nntp_sock;
  93         SESSION(session)->sock      = nntp_sock->sock;
  94         SESSION(session)->connected = TRUE;
  95         SESSION(session)->phase     = SESSION_READY;
  96         SESSION(session)->data      = NULL;
  97         session->group = NULL;
  98
  99         return SESSION(session);
 100 }
 101
 102 void news_session_destroy(NNTPSession *session)
 103 {
 104         nntp_close(session->nntp_sock);
 105         session->nntp_sock = NULL;
 106         SESSION(session)->sock = NULL;
 107
 108         g_free(session->group);
 109 }
 110
 111 static gchar *news_query_password(const gchar *server,
 112                                   const gchar *user)
 113 {
 114         gchar *message;
 115         gchar *pass;
 116
 117         message = g_strdup_printf(_("Input password for %s on %s:"),
 118                                   user, server);
 119
 120         pass = input_dialog_with_invisible(_("Input password"),
 121                                            message, NULL);
 122         g_free(message);
 123 /*      manage_window_focus_in(inc_dialog->mainwin->window, */
 124 /*                             NULL, NULL); */
 125         return pass;
 126 }
 127
 128 static Session *news_session_new_for_folder(Folder *folder)
 129 {
 130         Session *session;
 131         PrefsAccount *ac;
 132         const gchar *userid;
 133         gchar *passwd;
 134
 135         ac = folder->account;
 136         if (ac->use_nntp_auth && ac->userid && ac->userid[0]) {
 137                 userid = ac->userid;
 138                 if (ac->passwd && ac->passwd[0])
 139                         passwd = g_strdup(ac->passwd);
 140                 else {
 141                         passwd = news_query_password(ac->nntp_server, userid);
 142                         if (!passwd)
 143                                 userid = NULL;
 144                 }
 145         } else {
 146                 userid = passwd = NULL;
 147         }
 148         session = news_session_new(ac->nntp_server, 119, userid, passwd);
 149         g_free(passwd);
 150         return session;
 151 }
 152
 153 NNTPSession *news_session_get(Folder *folder)
 154 {
 155         NNTPSession *session;
 156
 157         g_return_val_if_fail(folder != NULL, NULL);
 158         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 159         g_return_val_if_fail(folder->account != NULL, NULL);
 160
 161         if (!REMOTE_FOLDER(folder)->session) {
 162                 REMOTE_FOLDER(folder)->session =
 163                         news_session_new_for_folder(folder);
 164         } else {
 165                 session = NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 166                 if (nntp_mode(session->nntp_sock, FALSE) != NN_SUCCESS) {
 167                         log_warning(_("NNTP connection to %s:%d has been"
 168                                       " disconnected. Reconnecting...\n"),
 169                                     folder->account->nntp_server, 119);
 170                         session_destroy(REMOTE_FOLDER(folder)->session);
 171                         REMOTE_FOLDER(folder)->session =
 172                                 news_session_new_for_folder(folder);
 173                 }
 174         }
 175
 176         return NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 177 }
 178
 179 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 180                               gboolean use_cache)
 181 {
 182         GSList *alist;
 183         NNTPSession *session;
 184
 185         g_return_val_if_fail(folder != NULL, NULL);
 186         g_return_val_if_fail(item != NULL, NULL);
 187         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 188
 189         session = news_session_get(folder);
 190
 191         if (!session) {
 192                 alist = procmsg_read_cache(item, FALSE);
 193                 item->last_num = procmsg_get_last_num_in_cache(alist);
 194         } else if (use_cache) {
 195                 GSList *newlist;
 196                 gint cache_last;
 197                 gint first, last;
 198
 199                 alist = procmsg_read_cache(item, FALSE);
 200
 201                 cache_last = procmsg_get_last_num_in_cache(alist);
 202                 newlist = news_get_uncached_articles
 203                         (session, item, cache_last, &first, &last);
 204                 alist = news_delete_old_article(alist, first);
 205
 206                 alist = g_slist_concat(alist, newlist);
 207                 item->last_num = last;
 208         } else {
 209                 gint last;
 210
 211                 alist = news_get_uncached_articles
 212                         (session, item, 0, NULL, &last);
 213                 news_delete_all_article(item);
 214                 item->last_num = last;
 215         }
 216
 217         procmsg_set_flags(alist, item);
 218
 219         statusbar_pop_all();
 220
 221         return alist;
 222 }
 223
 224 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 225 {
 226         gchar *path, *filename;
 227         gint ok;
 228
 229         g_return_val_if_fail(folder != NULL, NULL);
 230         g_return_val_if_fail(item != NULL, NULL);
 231
 232         path = folder_item_get_path(item);
 233         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 234         g_free(path);
 235
 236         if (is_file_exist(filename)) {
 237                 debug_print(_("article %d has been already cached.\n"), num);
 238                 return filename;
 239         }
 240
 241         if (!REMOTE_FOLDER(folder)->session) {
 242                 g_free(filename);
 243                 return NULL;
 244         }
 245
 246         debug_print(_("getting article %d...\n"), num);
 247         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 248                               num, filename);
 249         statusbar_pop_all();
 250         if (ok < 0) {
 251                 g_warning(_("can't read article %d\n"), num);
 252                 g_free(filename);
 253                 return NULL;
 254         }
 255
 256         return filename;
 257 }
 258
 259 void news_scan_group(Folder *folder, FolderItem *item)
 260 {
 261 }
 262
 263 gint news_post(Folder *folder, const gchar *file)
 264 {
 265         NNTPSession *session;
 266         FILE *fp;
 267         gint ok;
 268
 269         g_return_val_if_fail(folder != NULL, -1);
 270         g_return_val_if_fail(folder->type == F_NEWS, -1);
 271         g_return_val_if_fail(file != NULL, -1);
 272
 273         session = news_session_get(folder);
 274         if (!session) return -1;
 275
 276         if ((fp = fopen(file, "r")) == NULL) {
 277                 FILE_OP_ERROR(file, "fopen");
 278                 return -1;
 279         }
 280
 281         ok = nntp_post(session->nntp_sock, fp);
 282         if (ok != NN_SUCCESS) {
 283                 log_warning(_("can't post article.\n"));
 284                 return -1;
 285         }
 286
 287         fclose(fp);
 288
 289         statusbar_pop_all();
 290
 291         return 0;
 292 }
 293
 294 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 295                                  gint num, gchar *filename)
 296 {
 297         gchar *msgid;
 298
 299         if (nntp_get_article(session->nntp_sock, cmd, num, &msgid)
 300             != NN_SUCCESS)
 301                 return -1;
 302
 303         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 304         g_free(msgid);
 305
 306         if (recv_write_to_file(session->nntp_sock->sock, filename) < 0) {
 307                 log_warning(_("can't retrieve article %d\n"), num);
 308                 return -1;
 309         }
 310
 311         return 0;
 312 }
 313
 314 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 315 {
 316         return news_get_article_cmd(session, "ARTICLE", num, filename);
 317 }
 318
 319 static gint news_get_header(NNTPSession *session, gint num, gchar *filename)
 320 {
 321         return news_get_article_cmd(session, "HEAD", num, filename);
 322 }
 323
 324 static GSList *news_get_uncached_articles(NNTPSession *session,
 325                                           FolderItem *item, gint cache_last,
 326                                           gint *rfirst, gint *rlast)
 327 {
 328         gint ok;
 329         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 330         gchar buf[NNTPBUFSIZE];
 331         GSList *newlist = NULL;
 332         GSList *llast = NULL;
 333         MsgInfo *msginfo;
 334
 335         if (rfirst) *rfirst = 0;
 336         if (rlast)  *rlast  = 0;
 337
 338         g_return_val_if_fail(session != NULL, NULL);
 339         g_return_val_if_fail(item != NULL, NULL);
 340         g_return_val_if_fail(item->folder != NULL, NULL);
 341         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 342
 343         ok = nntp_group(session->nntp_sock, item->path,
 344                         &num, &first, &last);
 345         if (ok != NN_SUCCESS) {
 346                 log_warning(_("can't set group: %s\n"), item->path);
 347                 return NULL;
 348         }
 349
 350         /* calculate getting overview range */
 351         if (first > last) {
 352                 log_warning(_("invalid article range: %d - %d\n"),
 353                             first, last);
 354                 return NULL;
 355         }
 356         if (cache_last < first)
 357                 begin = first;
 358         else if (last < cache_last)
 359                 begin = first;
 360         else if (last == cache_last) {
 361                 debug_print(_("no new articles.\n"));
 362                 return NULL;
 363         } else
 364                 begin = cache_last + 1;
 365         end = last;
 366
 367         if (prefs_common.max_articles > 0 &&
 368             end - begin + 1 > prefs_common.max_articles)
 369                 begin = end - prefs_common.max_articles + 1;
 370
 371         log_message(_("getting xover %d - %d in %s...\n"),
 372                     begin, end, item->path);
 373         if (nntp_xover(session->nntp_sock, begin, end) != NN_SUCCESS) {
 374                 log_warning(_("can't get xover\n"));
 375                 return NULL;
 376         }
 377
 378         for (;;) {
 379                 if (sock_gets(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 380                         log_warning(_("error occurred while getting xover.\n"));
 381                         return newlist;
 382                 }
 383
 384                 if (buf[0] == '.' && buf[1] == '\r') break;
 385
 386                 msginfo = news_parse_xover(buf);
 387                 if (!msginfo) {
 388                         log_warning(_("invalid xover line: %s\n"), buf);
 389                         continue;
 390                 }
 391
 392                 msginfo->folder = item;
 393                 msginfo->flags = MSG_NEW|MSG_UNREAD|MSG_NEWS;
 394
 395                 if (!newlist)
 396                         llast = newlist = g_slist_append(newlist, msginfo);
 397                 else {
 398                         llast = g_slist_append(llast, msginfo);
 399                         llast = llast->next;
 400                 }
 401         }
 402
 403         if (rfirst) *rfirst = first;
 404         if (rlast)  *rlast  = last;
 405         return newlist;
 406 }
 407
 408 #define PARSE_ONE_PARAM(p, srcp) \
 409 { \
 410         p = strchr(srcp, '\t'); \
 411         if (!p) return NULL; \
 412         else \
 413                 *p++ = '\0'; \
 414 }
 415
 416 static MsgInfo *news_parse_xover(const gchar *xover_str)
 417 {
 418         MsgInfo *msginfo;
 419         gchar buf[NNTPBUFSIZE];
 420         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 421         gchar *p;
 422         gint num, size_int, line_int;
 423         gchar *xover_buf;
 424
 425         Xalloca(xover_buf, strlen(xover_str) + 1, return NULL);
 426         strcpy(xover_buf, xover_str);
 427
 428         PARSE_ONE_PARAM(subject, xover_buf);
 429         PARSE_ONE_PARAM(sender, subject);
 430         PARSE_ONE_PARAM(date, sender);
 431         PARSE_ONE_PARAM(msgid, date);
 432         PARSE_ONE_PARAM(ref, msgid);
 433         PARSE_ONE_PARAM(size, ref);
 434         PARSE_ONE_PARAM(line, size);
 435
 436         tmp = strchr(line, '\t');
 437         if (!tmp) tmp = strchr(line, '\r');
 438         if (!tmp) tmp = strchr(line, '\n');
 439         if (tmp) *tmp = '\0';
 440
 441         num = atoi(xover_str);
 442         size_int = atoi(size);
 443         line_int = atoi(line);
 444
 445         /* set MsgInfo */
 446         msginfo = g_new0(MsgInfo, 1);
 447         msginfo->msgnum = num;
 448         msginfo->size = size_int;
 449
 450         msginfo->date = g_strdup(date);
 451         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 452
 453         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 454         msginfo->from = g_strdup(buf);
 455         msginfo->fromname = procheader_get_fromname(buf);
 456
 457         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 458         msginfo->subject = g_strdup(buf);
 459
 460         extract_parenthesis(msgid, '<', '>');
 461         remove_space(msgid);
 462         if (*msgid != '\0')
 463                 msginfo->msgid = g_strdup(msgid);
 464
 465         eliminate_parenthesis(ref, '(', ')');
 466         if ((p = strrchr(ref, '<')) != NULL) {
 467                 extract_parenthesis(p, '<', '>');
 468                 remove_space(p);
 469                 if (*p != '\0')
 470                         msginfo->inreplyto = g_strdup(p);
 471         }
 472
 473         return msginfo;
 474 }
 475
 476 static GSList *news_delete_old_article(GSList *alist, gint first)
 477 {
 478         GSList *cur, *next;
 479         MsgInfo *msginfo;
 480         gchar *cache_file;
 481
 482         if (first < 2) return alist;
 483
 484         for (cur = alist; cur != NULL; ) {
 485                 next = cur->next;
 486
 487                 msginfo = (MsgInfo *)cur->data;
 488                 if (msginfo && msginfo->msgnum < first) {
 489                         debug_print(_("deleting article %d...\n"),
 490                                     msginfo->msgnum);
 491
 492                         cache_file = procmsg_get_message_file_path(msginfo);
 493                         if (is_file_exist(cache_file)) unlink(cache_file);
 494                         g_free(cache_file);
 495
 496                         procmsg_msginfo_free(msginfo);
 497                         alist = g_slist_remove(alist, msginfo);
 498                 }
 499
 500                 cur = next;
 501         }
 502
 503         return alist;
 504 }
 505
 506 static void news_delete_all_article(FolderItem *item)
 507 {
 508         DIR *dp;
 509         struct dirent *d;
 510         gchar *dir;
 511         gchar *file;
 512
 513         dir = folder_item_get_path(item);
 514         if ((dp = opendir(dir)) == NULL) {
 515                 FILE_OP_ERROR(dir, "opendir");
 516                 g_free(dir);
 517                 return;
 518         }
 519
 520         debug_print(_("\tDeleting all cached articles... "));
 521
 522         while ((d = readdir(dp)) != NULL) {
 523                 if (to_number(d->d_name) < 0) continue;
 524
 525                 file = g_strconcat(dir, G_DIR_SEPARATOR_S, d->d_name, NULL);
 526
 527                 if (is_file_exist(file)) {
 528                         if (unlink(file) < 0)
 529                                 FILE_OP_ERROR(file, "unlink");
 530                 }
 531
 532                 g_free(file);
 533         }
 534
 535         closedir(dp);
 536         g_free(dir);
 537
 538         debug_print(_("done.\n"));
 539 }
 540
 541 /*
 542   news_get_group_list returns a strings list.
 543   These strings are the names of the newsgroups of a server.
 544   item is the FolderItem of the news server.
 545   The names of the newsgroups are cached into a file so that
 546   when the function is called again, there is no need to make
 547   a request to the server.
 548  */
 549
 550 GSList * news_get_group_list(FolderItem *item)
 551 {
 552         gchar *path, *filename;
 553         gint ok;
 554         NNTPSession *session;
 555         GSList * group_list = NULL;
 556         FILE * f;
 557         gchar buf[NNTPBUFSIZE];
 558         int len;
 559
 560         if (item == NULL)
 561           return NULL;
 562
 563         path = folder_item_get_path(item);
 564
 565         if (!is_dir_exist(path))
 566                 make_dir_hier(path);
 567
 568         filename = g_strconcat(path, G_DIR_SEPARATOR_S, GROUPLIST_FILE, NULL);
 569         g_free(path);
 570
 571         session = news_session_get(item->folder);
 572
 573         if (session == NULL)
 574           return NULL;
 575
 576         if (is_file_exist(filename)) {
 577                 debug_print(_("group list has been already cached.\n"));
 578         }
 579         else {
 580             ok = nntp_list(session->nntp_sock);
 581             if (ok != NN_SUCCESS)
 582               return NULL;
 583
 584             if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 585               log_warning(_("can't retrieve group list\n"));
 586               return NULL;
 587             }
 588         }
 589
 590         f = fopen(filename, "r");
 591         while (fgets(buf, NNTPBUFSIZE, f)) {
 592             char * s;
 593
 594             len = 0;
 595             while ((buf[len] != 0) && (buf[len] != ' '))
 596               len++;
 597             buf[len] = 0;
 598             s = g_strdup(buf);
 599
 600             group_list = g_slist_append(group_list, s);
 601         }
 602         fclose(f);
 603         g_free(filename);
 604
 605         group_list = g_slist_sort(group_list, (GCompareFunc) g_strcasecmp);
 606
 607         return group_list;
 608 }
 609
 610 /*
 611   remove the cache file of the names of the newsgroups.
 612  */
 613
 614 void news_reset_group_list(FolderItem *item)
 615 {
 616         gchar *path, *filename;
 617
 618         debug_print(_("\tDeleting cached group list... "));
 619         path = folder_item_get_path(item);
 620         filename = g_strconcat(path, G_DIR_SEPARATOR_S, GROUPLIST_FILE, NULL);
 621         g_free(path);
 622         if (remove(filename) != 0)
 623           log_warning(_("can't delete cached group list %s\n"), filename);
 624         g_free(filename);
 625 }