camel/providers/local/camel-spool-folder.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*-
   2  *
   3  * Authors: Michael Zucchi <notzed@ximian.com>
   4  *
   5  * Copyright (C) 1999-2008 Novell, Inc. (www.novell.com)
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of version 2 of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301
  19  * USA
  20  */
  21
  22 #ifdef HAVE_CONFIG_H
  23 #include <config.h>
  24 #endif
  25
  26 #include <dirent.h>
  27 #include <errno.h>
  28 #include <fcntl.h>
  29 #include <stdlib.h>
  30 #include <string.h>
  31 #include <unistd.h>
  32 #include <sys/stat.h>
  33 #include <sys/types.h>
  34
  35 #include <glib/gi18n-lib.h>
  36
  37 #include "camel-spool-folder.h"
  38 #include "camel-spool-settings.h"
  39 #include "camel-spool-store.h"
  40 #include "camel-spool-summary.h"
  41
  42 #define d(x) /*(printf("%s(%d): ", __FILE__, __LINE__),(x))*/
  43
  44 G_DEFINE_TYPE (CamelSpoolFolder, camel_spool_folder, CAMEL_TYPE_MBOX_FOLDER)
  45
  46 static CamelLocalSummary *
  47 spool_folder_create_summary (CamelLocalFolder *lf,
  48                              const gchar *folder,
  49                              CamelIndex *index)
  50 {
  51         return (CamelLocalSummary *) camel_spool_summary_new (
  52                 CAMEL_FOLDER (lf), folder);
  53 }
  54
  55 static gint
  56 spool_folder_lock (CamelLocalFolder *lf,
  57                    CamelLockType type,
  58                    GError **error)
  59 {
  60         gint retry = 0;
  61         CamelMboxFolder *mf = (CamelMboxFolder *) lf;
  62         CamelSpoolFolder *sf = (CamelSpoolFolder *) lf;
  63         GError *local_error = NULL;
  64
  65         mf->lockfd = open (lf->folder_path, O_RDWR | O_LARGEFILE, 0);
  66         if (mf->lockfd == -1) {
  67                 g_set_error (
  68                         error, G_IO_ERROR,
  69                         g_io_error_from_errno (errno),
  70                         _("Cannot create folder lock on %s: %s"),
  71                         lf->folder_path, g_strerror (errno));
  72                 return -1;
  73         }
  74
  75         while (retry < CAMEL_LOCK_RETRY) {
  76                 if (retry > 0)
  77                         sleep (CAMEL_LOCK_DELAY);
  78
  79                 g_clear_error (&local_error);
  80
  81                 if (camel_lock_fcntl (mf->lockfd, type, &local_error) == 0) {
  82                         if (camel_lock_flock (mf->lockfd, type, &local_error) == 0) {
  83                                 if ((sf->lockid = camel_lock_helper_lock (lf->folder_path, &local_error)) != -1)
  84                                         return 0;
  85                                 camel_unlock_flock (mf->lockfd);
  86                         }
  87                         camel_unlock_fcntl (mf->lockfd);
  88                 }
  89                 retry++;
  90         }
  91
  92         close (mf->lockfd);
  93         mf->lockfd = -1;
  94
  95         if (local_error != NULL)
  96                 g_propagate_error (error, local_error);
  97
  98         return -1;
  99 }
 100
 101 static void
 102 spool_folder_unlock (CamelLocalFolder *lf)
 103 {
 104         CamelMboxFolder *mf = (CamelMboxFolder *) lf;
 105         CamelSpoolFolder *sf = (CamelSpoolFolder *) lf;
 106
 107         camel_lock_helper_unlock (sf->lockid);
 108         sf->lockid = -1;
 109         camel_unlock_flock (mf->lockfd);
 110         camel_unlock_fcntl (mf->lockfd);
 111
 112         close (mf->lockfd);
 113         mf->lockfd = -1;
 114 }
 115
 116 static void
 117 camel_spool_folder_class_init (CamelSpoolFolderClass *class)
 118 {
 119         CamelLocalFolderClass *local_folder_class;
 120
 121         local_folder_class = CAMEL_LOCAL_FOLDER_CLASS (class);
 122         local_folder_class->create_summary = spool_folder_create_summary;
 123         local_folder_class->lock = spool_folder_lock;
 124         local_folder_class->unlock = spool_folder_unlock;
 125 }
 126
 127 static void
 128 camel_spool_folder_init (CamelSpoolFolder *spool_folder)
 129 {
 130         spool_folder->lockid = -1;
 131 }
 132
 133 CamelFolder *
 134 camel_spool_folder_new (CamelStore *parent_store,
 135                         const gchar *full_name,
 136                         guint32 flags,
 137                         GCancellable *cancellable,
 138                         GError **error)
 139 {
 140         CamelFolder *folder;
 141         CamelService *service;
 142         CamelSettings *settings;
 143         gboolean filter_inbox;
 144         gboolean use_xstatus_headers;
 145         gchar *basename;
 146
 147         service = CAMEL_SERVICE (parent_store);
 148
 149         settings = camel_service_ref_settings (service);
 150
 151         filter_inbox = camel_store_settings_get_filter_inbox (
 152                 CAMEL_STORE_SETTINGS (settings));
 153
 154         use_xstatus_headers = camel_spool_settings_get_use_xstatus_headers (
 155                 CAMEL_SPOOL_SETTINGS (settings));
 156
 157         g_object_unref (settings);
 158
 159         basename = g_path_get_basename (full_name);
 160
 161         folder = g_object_new (
 162                 CAMEL_TYPE_SPOOL_FOLDER,
 163                 "display-name", basename, "full-name", full_name,
 164                 "parent-store", parent_store, NULL);
 165
 166         if (filter_inbox && strcmp (full_name, "INBOX") == 0)
 167                 folder->folder_flags |= CAMEL_FOLDER_FILTER_RECENT;
 168         flags &= ~CAMEL_STORE_FOLDER_BODY_INDEX;
 169
 170         folder = (CamelFolder *) camel_local_folder_construct (
 171                 (CamelLocalFolder *) folder, flags, cancellable, error);
 172
 173         if (folder != NULL && use_xstatus_headers)
 174                 camel_mbox_summary_xstatus (
 175                         CAMEL_MBOX_SUMMARY (folder->summary), TRUE);
 176
 177         g_free (basename);
 178
 179         return folder;
 180 }
 181