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