mirror of
https://github.com/transmission/transmission
synced 2024-12-25 17:17:31 +00:00
251 lines
6.4 KiB
C
251 lines
6.4 KiB
C
/******************************************************************************
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* $Id$
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*
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* Copyright (c) 2005-2007 Transmission authors and contributors
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*****************************************************************************/
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <glib.h>
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#include <glib/gi18n.h>
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#include <glib/gstdio.h>
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#include <libtransmission/transmission.h>
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#include "conf.h"
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#include "util.h"
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static char * gl_confdir = NULL;
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static char * gl_lockpath = NULL;
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/* errstr may be NULL, this might be called before GTK is initialized */
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gboolean
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cf_init(const char *dir, char **errstr)
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{
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if( errstr != NULL )
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*errstr = NULL;
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gl_confdir = g_build_filename( dir, "gtk", NULL );
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if( mkdir_p(gl_confdir, 0755 ) )
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return TRUE;
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if( errstr != NULL )
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*errstr = g_strdup_printf( _("Failed to create the directory %s:\n%s"),
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gl_confdir, g_strerror(errno) );
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return FALSE;
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}
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/***
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****
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**** Lockfile
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****
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***/
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/* errstr may be NULL, this might be called before GTK is initialized */
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static int
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lockfile(const char *file, char **errstr)
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{
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int fd;
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struct flock lk;
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if( errstr )
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*errstr = NULL;
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fd = open( file, O_RDWR | O_CREAT, 0666 );
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if( fd < 0 )
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{
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const int savederr = errno;
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if( errstr )
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*errstr = g_strdup_printf(
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_("Failed to open the file %s for writing:\n%s"),
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file, g_strerror( errno ) );
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errno = savederr;
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return -1;
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}
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memset( &lk, 0, sizeof( lk ) );
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lk.l_start = 0;
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lk.l_len = 0;
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lk.l_type = F_WRLCK;
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lk.l_whence = SEEK_SET;
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if( -1 == fcntl( fd, F_SETLK, &lk ) )
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{
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const int savederr = errno;
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if( errstr )
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*errstr = ( errno == EAGAIN )
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? g_strdup_printf( _( "Another copy of %s is already running." ),
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g_get_application_name( ) )
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: g_strdup_printf( _( "Failed to lock the file %s:\n%s" ),
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file, g_strerror( errno ) );
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close( fd );
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errno = savederr;
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return -1;
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}
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return fd;
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}
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static char*
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getLockFilename( void )
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{
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assert( gl_confdir != NULL );
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return g_build_filename( gl_confdir, "lock", NULL );
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}
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static void
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cf_removelocks( void )
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{
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g_unlink( gl_lockpath );
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g_free( gl_lockpath );
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}
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/* errstr may be NULL, this might be called before GTK is initialized */
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gboolean
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cf_lock( char ** errstr )
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{
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char * path = getLockFilename( );
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int fd = lockfile( path, errstr );
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if( fd >= 0 )
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gl_lockpath = g_strdup( path );
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g_atexit( cf_removelocks );
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g_free( path );
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return fd >= 0;
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}
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char*
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cf_sockname( void )
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{
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assert( gl_confdir != NULL );
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return g_build_filename( gl_confdir, "socket", NULL );
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}
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/***
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****
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**** Preferences
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****
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***/
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#define GROUP "general"
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static char*
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getPrefsFilename( void )
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{
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assert( gl_confdir != NULL );
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return g_build_filename( gl_confdir, "prefs.ini", NULL );
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}
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static GKeyFile*
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getPrefsKeyFile( void )
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{
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static GKeyFile * myKeyFile = NULL;
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if( myKeyFile == NULL )
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{
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char * filename = getPrefsFilename( );
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myKeyFile = g_key_file_new( );
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g_key_file_load_from_file( myKeyFile, filename, 0, NULL );
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g_free( filename );
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}
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return myKeyFile;
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}
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int
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pref_int_get( const char * key ) {
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return g_key_file_get_integer( getPrefsKeyFile( ), GROUP, key, NULL );
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}
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void
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pref_int_set( const char * key, int value ) {
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g_key_file_set_integer( getPrefsKeyFile( ), GROUP, key, value );
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}
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void
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pref_int_set_default( const char * key, int value ) {
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if( !g_key_file_has_key( getPrefsKeyFile( ), GROUP, key, NULL ) )
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pref_int_set( key, value );
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}
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gboolean
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pref_flag_get ( const char * key ) {
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return g_key_file_get_boolean( getPrefsKeyFile( ), GROUP, key, NULL );
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}
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void
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pref_flag_set( const char * key, gboolean value ) {
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g_key_file_set_boolean( getPrefsKeyFile( ), GROUP, key, value );
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}
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void
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pref_flag_set_default( const char * key, gboolean value ) {
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if( !g_key_file_has_key( getPrefsKeyFile( ), GROUP, key, NULL ) )
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pref_flag_set( key, value );
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}
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char*
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pref_string_get( const char * key ) {
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return g_key_file_get_string( getPrefsKeyFile( ), GROUP, key, NULL );
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}
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void
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pref_string_set( const char * key, const char * value ) {
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g_key_file_set_string( getPrefsKeyFile( ), GROUP, key, value );
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}
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void
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pref_string_set_default( const char * key, const char * value ) {
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if( !g_key_file_has_key( getPrefsKeyFile( ), GROUP, key, NULL ) )
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pref_string_set( key, value );
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}
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void
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pref_save(char **errstr)
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{
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gsize datalen;
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GError * err = NULL;
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char * data;
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char * filename;
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char * path;
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filename = getPrefsFilename( );
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path = g_path_get_dirname( filename );
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mkdir_p( path, 0755 );
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data = g_key_file_to_data( getPrefsKeyFile(), &datalen, &err );
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if( !err ) {
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GIOChannel * out = g_io_channel_new_file( filename, "w+", &err );
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g_io_channel_write_chars( out, data, datalen, NULL, &err );
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g_io_channel_unref( out );
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}
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if( errstr != NULL )
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*errstr = err ? g_strdup( err->message ) : NULL;
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g_clear_error( &err );
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g_free( data );
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g_free( path );
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g_free( filename );
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}
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