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