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 Session *news_session_new(const gchar *server, gushort port)
  72 {
  73         gchar buf[NNTPBUFSIZE];
  74         NNTPSession *session;
  75         SockInfo *nntp_sock;
  76
  77         g_return_val_if_fail(server != NULL, NULL);
  78
  79         log_message(_("creating NNTP connection to %s:%d ...\n"), server, port);
  80
  81         if ((nntp_sock = nntp_open(server, port, buf)) < 0)
  82                 return NULL;
  83
  84         session = g_new(NNTPSession, 1);
  85         SESSION(session)->type      = SESSION_NEWS;
  86         SESSION(session)->server    = g_strdup(server);
  87         SESSION(session)->sock      = nntp_sock;
  88         SESSION(session)->connected = TRUE;
  89         SESSION(session)->phase     = SESSION_READY;
  90         SESSION(session)->data      = NULL;
  91         session->group = NULL;
  92
  93         return SESSION(session);
  94 }
  95
  96 void news_session_destroy(NNTPSession *session)
  97 {
  98         sock_close(SESSION(session)->sock);
  99         SESSION(session)->sock = NULL;
 100
 101         g_free(session->group);
 102 }
 103
 104 NNTPSession *news_session_get(Folder *folder)
 105 {
 106         g_return_val_if_fail(folder != NULL, NULL);
 107         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 108         g_return_val_if_fail(folder->account != NULL, NULL);
 109
 110         if (!REMOTE_FOLDER(folder)->session) {
 111                 REMOTE_FOLDER(folder)->session =
 112                         news_session_new(folder->account->nntp_server, 119);
 113         } else {
 114                 if (nntp_mode(REMOTE_FOLDER(folder)->session->sock, FALSE)
 115                     != NN_SUCCESS) {
 116                         log_warning(_("NNTP connection to %s:%d has been"
 117                                       " disconnected. Reconnecting...\n"),
 118                                     folder->account->nntp_server, 119);
 119                         session_destroy(REMOTE_FOLDER(folder)->session);
 120                         REMOTE_FOLDER(folder)->session =
 121                                 news_session_new(folder->account->nntp_server,
 122                                                  119);
 123                 }
 124         }
 125
 126         return NNTP_SESSION(REMOTE_FOLDER(folder)->session);
 127 }
 128
 129 GSList *news_get_article_list(Folder *folder, FolderItem *item,
 130                               gboolean use_cache)
 131 {
 132         GSList *alist;
 133         NNTPSession *session;
 134
 135         g_return_val_if_fail(folder != NULL, NULL);
 136         g_return_val_if_fail(item != NULL, NULL);
 137         g_return_val_if_fail(folder->type == F_NEWS, NULL);
 138
 139         session = news_session_get(folder);
 140
 141         if (!session) {
 142                 alist = procmsg_read_cache(item, FALSE);
 143                 item->last_num = procmsg_get_last_num_in_cache(alist);
 144         } else if (use_cache) {
 145                 GSList *newlist;
 146                 gint cache_last;
 147                 gint first, last;
 148
 149                 alist = procmsg_read_cache(item, FALSE);
 150
 151                 cache_last = procmsg_get_last_num_in_cache(alist);
 152                 newlist = news_get_uncached_articles
 153                         (session, item, cache_last, &first, &last);
 154                 alist = news_delete_old_article(alist, first);
 155
 156                 alist = g_slist_concat(alist, newlist);
 157                 item->last_num = last;
 158         } else {
 159                 gint last;
 160
 161                 alist = news_get_uncached_articles
 162                         (session, item, 0, NULL, &last);
 163                 news_delete_all_article(item);
 164                 item->last_num = last;
 165         }
 166
 167         procmsg_set_flags(alist, item);
 168
 169         statusbar_pop_all();
 170
 171         return alist;
 172 }
 173
 174 gchar *news_fetch_msg(Folder *folder, FolderItem *item, gint num)
 175 {
 176         gchar *path, *filename;
 177         gint ok;
 178
 179         g_return_val_if_fail(folder != NULL, NULL);
 180         g_return_val_if_fail(item != NULL, NULL);
 181
 182         path = folder_item_get_path(item);
 183         filename = g_strconcat(path, G_DIR_SEPARATOR_S, itos(num), NULL);
 184         g_free(path);
 185
 186         if (is_file_exist(filename)) {
 187                 debug_print(_("article %d has been already cached.\n"), num);
 188                 return filename;
 189         }
 190
 191         if (!REMOTE_FOLDER(folder)->session) {
 192                 g_free(filename);
 193                 return NULL;
 194         }
 195
 196         debug_print(_("getting article %d...\n"), num);
 197         ok = news_get_article(NNTP_SESSION(REMOTE_FOLDER(folder)->session),
 198                               num, filename);
 199         statusbar_pop_all();
 200         if (ok < 0) {
 201                 g_warning(_("can't read article %d\n"), num);
 202                 g_free(filename);
 203                 return NULL;
 204         }
 205
 206         return filename;
 207 }
 208
 209 void news_scan_group(Folder *folder, FolderItem *item)
 210 {
 211 }
 212
 213 gint news_post(Folder *folder, const gchar *file)
 214 {
 215         NNTPSession *session;
 216         FILE *fp;
 217         gint ok;
 218
 219         g_return_val_if_fail(folder != NULL, -1);
 220         g_return_val_if_fail(folder->type == F_NEWS, -1);
 221         g_return_val_if_fail(file != NULL, -1);
 222
 223         session = news_session_get(folder);
 224         if (!session) return -1;
 225
 226         if ((fp = fopen(file, "r")) == NULL) {
 227                 FILE_OP_ERROR(file, "fopen");
 228                 return -1;
 229         }
 230
 231         ok = nntp_post(SESSION(session)->sock, fp);
 232         if (ok != NN_SUCCESS) {
 233                 log_warning(_("can't post article.\n"));
 234                 return -1;
 235         }
 236
 237         fclose(fp);
 238
 239         statusbar_pop_all();
 240
 241         return 0;
 242 }
 243
 244 static gint news_get_article_cmd(NNTPSession *session, const gchar *cmd,
 245                                  gint num, gchar *filename)
 246 {
 247         gchar *msgid;
 248
 249         if (nntp_get_article(SESSION(session)->sock, cmd, num, &msgid)
 250             != NN_SUCCESS)
 251                 return -1;
 252
 253         debug_print("Message-Id = %s, num = %d\n", msgid, num);
 254         g_free(msgid);
 255
 256         if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 257                 log_warning(_("can't retrieve article %d\n"), num);
 258                 return -1;
 259         }
 260
 261         return 0;
 262 }
 263
 264 static gint news_get_article(NNTPSession *session, gint num, gchar *filename)
 265 {
 266         return news_get_article_cmd(session, "ARTICLE", num, filename);
 267 }
 268
 269 static gint news_get_header(NNTPSession *session, gint num, gchar *filename)
 270 {
 271         return news_get_article_cmd(session, "HEAD", num, filename);
 272 }
 273
 274 static gchar *news_query_password(NNTPSession *session,
 275                                   const gchar *user)
 276 {
 277         gchar *message;
 278         gchar *pass;
 279
 280         message = g_strdup_printf
 281                 (_("Input password for %s on %s:"),
 282                  user,
 283                  SESSION(session)->server);
 284
 285         pass = input_dialog_with_invisible(_("Input password"),
 286                                            message, NULL);
 287         g_free(message);
 288 /*      manage_window_focus_in(inc_dialog->mainwin->window, */
 289 /*                             NULL, NULL); */
 290         return pass;
 291 }
 292
 293 static gint news_authenticate(NNTPSession *session,
 294                               FolderItem *item)
 295 {
 296         gint ok;
 297         const gchar *user;
 298         gchar *pass;
 299         gboolean need_free_pass = FALSE;
 300
 301         debug_print(_("news server requested authentication\n"));
 302         if (!item || !item->folder || !item->folder->account)
 303                 return NN_ERROR;
 304         user = item->folder->account->userid;
 305         if (!user)
 306                 return NN_ERROR;
 307         ok = nntp_authinfo_user(SESSION(session)->sock, user);
 308         if (ok == NN_AUTHCONT) {
 309                 pass = item->folder->account->passwd;
 310                 if (!pass || !pass[0]) {
 311                         pass = news_query_password(session, user);
 312                         need_free_pass = TRUE;
 313                 }
 314                 ok = nntp_authinfo_pass(SESSION(session)->sock, pass);
 315                 if (need_free_pass)
 316                         g_free(pass);
 317         }
 318         if (ok != NN_SUCCESS) {
 319                 log_warning(_("NNTP authentication failed\n"));
 320                 alertpanel_error(_("Authentication for %s on %s failed."),
 321                                  user, SESSION(session)->server);
 322         }
 323         return ok;
 324 }
 325
 326 static GSList *news_get_uncached_articles(NNTPSession *session,
 327                                           FolderItem *item, gint cache_last,
 328                                           gint *rfirst, gint *rlast)
 329 {
 330         gint ok;
 331         gint num = 0, first = 0, last = 0, begin = 0, end = 0;
 332         gchar buf[NNTPBUFSIZE];
 333         GSList *newlist = NULL;
 334         GSList *llast = NULL;
 335         MsgInfo *msginfo;
 336
 337         if (rfirst) *rfirst = 0;
 338         if (rlast)  *rlast  = 0;
 339
 340         g_return_val_if_fail(session != NULL, NULL);
 341         g_return_val_if_fail(item != NULL, NULL);
 342         g_return_val_if_fail(item->folder != NULL, NULL);
 343         g_return_val_if_fail(item->folder->type == F_NEWS, NULL);
 344
 345         ok = nntp_group(SESSION(session)->sock, item->path,
 346                         &num, &first, &last);
 347         if (ok == NN_AUTHREQ) {
 348                 ok = news_authenticate(session, item);
 349                 if (ok != NN_SUCCESS)
 350                         return NULL;
 351                 ok = nntp_group(SESSION(session)->sock, item->path,
 352                                 &num, &first, &last);
 353         }
 354         if (ok != NN_SUCCESS) {
 355                 log_warning(_("can't set group: %s\n"), item->path);
 356                 return NULL;
 357         }
 358
 359         /* calculate getting overview range */
 360         if (first > last) {
 361                 log_warning(_("invalid article range: %d - %d\n"),
 362                             first, last);
 363                 return NULL;
 364         }
 365         if (cache_last < first)
 366                 begin = first;
 367         else if (last < cache_last)
 368                 begin = first;
 369         else if (last == cache_last) {
 370                 debug_print(_("no new articles.\n"));
 371                 return NULL;
 372         } else
 373                 begin = cache_last + 1;
 374         end = last;
 375
 376         if (prefs_common.max_articles > 0 &&
 377             end - begin + 1 > prefs_common.max_articles)
 378                 begin = end - prefs_common.max_articles + 1;
 379
 380         log_message(_("getting xover %d - %d in %s...\n"),
 381                     begin, end, item->path);
 382         if (nntp_xover(SESSION(session)->sock, begin, end) != NN_SUCCESS) {
 383                 log_warning(_("can't get xover\n"));
 384                 return NULL;
 385         }
 386
 387         for (;;) {
 388                 if (sock_read(SESSION(session)->sock, buf, sizeof(buf)) < 0) {
 389                         log_warning(_("error occurred while getting xover.\n"));
 390                         return newlist;
 391                 }
 392
 393                 if (buf[0] == '.' && buf[1] == '\r') break;
 394
 395                 msginfo = news_parse_xover(buf);
 396                 if (!msginfo) {
 397                         log_warning(_("invalid xover line: %s\n"), buf);
 398                         continue;
 399                 }
 400
 401                 msginfo->folder = item;
 402                 msginfo->flags = MSG_NEW|MSG_UNREAD|MSG_NEWS;
 403
 404                 if (!newlist)
 405                         llast = newlist = g_slist_append(newlist, msginfo);
 406                 else {
 407                         llast = g_slist_append(llast, msginfo);
 408                         llast = llast->next;
 409                 }
 410         }
 411
 412         if (rfirst) *rfirst = first;
 413         if (rlast)  *rlast  = last;
 414         return newlist;
 415 }
 416
 417 #define PARSE_ONE_PARAM(p, srcp) \
 418 { \
 419         p = strchr(srcp, '\t'); \
 420         if (!p) return NULL; \
 421         else \
 422                 *p++ = '\0'; \
 423 }
 424
 425 static MsgInfo *news_parse_xover(const gchar *xover_str)
 426 {
 427         MsgInfo *msginfo;
 428         gchar buf[NNTPBUFSIZE];
 429         gchar *subject, *sender, *size, *line, *date, *msgid, *ref, *tmp;
 430         gchar *p;
 431         gint num, size_int, line_int;
 432         gchar *xover_buf;
 433
 434         Xalloca(xover_buf, strlen(xover_str) + 1, return NULL);
 435         strcpy(xover_buf, xover_str);
 436
 437         PARSE_ONE_PARAM(subject, xover_buf);
 438         PARSE_ONE_PARAM(sender, subject);
 439         PARSE_ONE_PARAM(date, sender);
 440         PARSE_ONE_PARAM(msgid, date);
 441         PARSE_ONE_PARAM(ref, msgid);
 442         PARSE_ONE_PARAM(size, ref);
 443         PARSE_ONE_PARAM(line, size);
 444
 445         tmp = strchr(line, '\t');
 446         if (!tmp) tmp = strchr(line, '\r');
 447         if (!tmp) tmp = strchr(line, '\n');
 448         if (tmp) *tmp = '\0';
 449
 450         num = atoi(xover_str);
 451         size_int = atoi(size);
 452         line_int = atoi(line);
 453
 454         /* set MsgInfo */
 455         msginfo = g_new0(MsgInfo, 1);
 456         msginfo->msgnum = num;
 457         msginfo->size = size_int;
 458
 459         msginfo->date = g_strdup(date);
 460         msginfo->date_t = procheader_date_parse(NULL, date, 0);
 461
 462         conv_unmime_header(buf, sizeof(buf), sender, NULL);
 463         msginfo->from = g_strdup(buf);
 464         msginfo->fromname = procheader_get_fromname(buf);
 465
 466         conv_unmime_header(buf, sizeof(buf), subject, NULL);
 467         msginfo->subject = g_strdup(buf);
 468
 469         extract_parenthesis(msgid, '<', '>');
 470         remove_space(msgid);
 471         if (*msgid != '\0')
 472                 msginfo->msgid = g_strdup(msgid);
 473
 474         eliminate_parenthesis(ref, '(', ')');
 475         if ((p = strrchr(ref, '<')) != NULL) {
 476                 extract_parenthesis(p, '<', '>');
 477                 remove_space(p);
 478                 if (*p != '\0')
 479                         msginfo->inreplyto = g_strdup(p);
 480         }
 481
 482         return msginfo;
 483 }
 484
 485 static GSList *news_delete_old_article(GSList *alist, gint first)
 486 {
 487         GSList *cur, *next;
 488         MsgInfo *msginfo;
 489         gchar *cache_file;
 490
 491         if (first < 2) return alist;
 492
 493         for (cur = alist; cur != NULL; ) {
 494                 next = cur->next;
 495
 496                 msginfo = (MsgInfo *)cur->data;
 497                 if (msginfo && msginfo->msgnum < first) {
 498                         debug_print(_("deleting article %d...\n"),
 499                                     msginfo->msgnum);
 500
 501                         cache_file = procmsg_get_message_file_path(msginfo);
 502                         if (is_file_exist(cache_file)) unlink(cache_file);
 503                         g_free(cache_file);
 504
 505                         procmsg_msginfo_free(msginfo);
 506                         alist = g_slist_remove(alist, msginfo);
 507                 }
 508
 509                 cur = next;
 510         }
 511
 512         return alist;
 513 }
 514
 515 static void news_delete_all_article(FolderItem *item)
 516 {
 517         DIR *dp;
 518         struct dirent *d;
 519         gchar *dir;
 520         gchar *file;
 521
 522         dir = folder_item_get_path(item);
 523         if ((dp = opendir(dir)) == NULL) {
 524                 FILE_OP_ERROR(dir, "opendir");
 525                 g_free(dir);
 526                 return;
 527         }
 528
 529         debug_print(_("\tDeleting all cached articles... "));
 530
 531         while ((d = readdir(dp)) != NULL) {
 532                 if (to_number(d->d_name) < 0) continue;
 533
 534                 file = g_strconcat(dir, G_DIR_SEPARATOR_S, d->d_name, NULL);
 535
 536                 if (is_file_exist(file)) {
 537                         if (unlink(file) < 0)
 538                                 FILE_OP_ERROR(file, "unlink");
 539                 }
 540
 541                 g_free(file);
 542         }
 543
 544         closedir(dp);
 545         g_free(dir);
 546
 547         debug_print(_("done.\n"));
 548 }
 549
 550 /*
 551   news_get_group_list returns a strings list.
 552   These strings are the names of the newsgroups of a server.
 553   item is the FolderItem of the news server.
 554   The names of the newsgroups are cached into a file so that
 555   when the function is called again, there is no need to make
 556   a request to the server.
 557  */
 558
 559 GSList * news_get_group_list(FolderItem *item)
 560 {
 561         gchar *path, *filename;
 562         gint ok;
 563         NNTPSession *session;
 564         GSList * group_list = NULL;
 565         FILE * f;
 566         gchar buf[NNTPBUFSIZE];
 567         int len;
 568
 569         if (item == NULL)
 570           return NULL;
 571
 572         path = folder_item_get_path(item);
 573
 574         if (!is_dir_exist(path))
 575                 make_dir_hier(path);
 576
 577         filename = g_strconcat(path, G_DIR_SEPARATOR_S, GROUPLIST_FILE, NULL);
 578         g_free(path);
 579
 580         session = news_session_get(item->folder);
 581
 582         if (session == NULL)
 583           return NULL;
 584
 585         if (is_file_exist(filename)) {
 586                 debug_print(_("group list has been already cached.\n"));
 587         }
 588         else {
 589             ok = nntp_list(SESSION(session)->sock);
 590             if (ok != NN_SUCCESS)
 591               return NULL;
 592
 593             if (recv_write_to_file(SESSION(session)->sock, filename) < 0) {
 594               log_warning(_("can't retrieve group list\n"));
 595               return NULL;
 596             }
 597         }
 598
 599         f = fopen(filename, "r");
 600         while (fgets(buf, NNTPBUFSIZE, f)) {
 601             char * s;
 602
 603             len = 0;
 604             while ((buf[len] != 0) && (buf[len] != ' '))
 605               len++;
 606             buf[len] = 0;
 607             s = g_strdup(buf);
 608
 609             group_list = g_slist_append(group_list, s);
 610         }
 611         fclose(f);
 612         g_free(filename);
 613
 614         group_list = g_slist_sort(group_list, (GCompareFunc) g_strcasecmp);
 615
 616         return group_list;
 617 }
 618
 619 /*
 620   remove the cache file of the names of the newsgroups.
 621  */
 622
 623 void news_reset_group_list(FolderItem *item)
 624 {
 625         gchar *path, *filename;
 626
 627         debug_print(_("\tDeleting cached group list... "));
 628         path = folder_item_get_path(item);
 629         filename = g_strconcat(path, G_DIR_SEPARATOR_S, GROUPLIST_FILE, NULL);
 630         g_free(path);
 631         if (remove(filename) != 0)
 632           log_warning(_("can't delete cached group list %s\n"), filename);
 633         g_free(filename);
 634 }