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/*
(c) Copyright 2001-2009 The world wide DirectFB Open Source Community (directfb.org)
(c) Copyright 2000-2004 Convergence (integrated media) GmbH
All rights reserved.
Written by Denis Oliver Kropp <dok@directfb.org>,
Andreas Hundt <andi@fischlustig.de>,
Sven Neumann <neo@directfb.org>,
Ville Syrjälä <syrjala@sci.fi> and
Claudio Ciccani <klan@users.sf.net>.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <pthread.h>
#include <direct/debug.h>
#include <direct/list.h>
#include <direct/util.h>
#include <coma/policy.h>
#include <misc/dale_config.h>
/**********************************************************************************************************************/
typedef struct {
DirectLink link;
char *name;
bool allowed;
} PolicyEntry;
/**********************************************************************************************************************/
static pthread_mutex_t policies_lock = PTHREAD_MUTEX_INITIALIZER;
static unsigned int policies_age = 1;
static DirectLink *policies = NULL;
/**********************************************************************************************************************/
static PolicyEntry *
lookup_policy( const char *name, bool sub )
{
PolicyEntry *entry;
direct_list_foreach (entry, policies) {
if (! strcasecmp( entry->name, name ))
return entry;
}
/*
* If the policy being registered contains a slash, but didn't exactly match an entry
* in fusiondalerc, check to see if the policy is descended from an entry in fusiondalerc
* (e.g. 'ui/field/messages' matches 'ui' or 'ui/field')
*/
if (sub && strchr(name, '/')) {
int passed_name_len = strlen( name );
direct_list_foreach (entry, policies) {
int entry_len = strlen( entry->name );
if ((passed_name_len > entry_len) &&
(name[entry_len] == '/') &&
(! strncasecmp( entry->name, name, entry_len))) {
return entry;
}
}
}
return NULL;
}
static bool
check_policy( ComaPolicy *policy )
{
if (policy->age != policies_age) {
PolicyEntry *entry = lookup_policy( policy->name, true );
policy->allowed = entry ? entry->allowed : fusiondale_config->coma_policy;
policy->age = policies_age;
}
return policy->allowed;
}
/**********************************************************************************************************************/
void
coma_policy_config( const char *name, bool allow )
{
PolicyEntry *entry;
pthread_mutex_lock( &policies_lock );
entry = lookup_policy( name, false );
if (!entry) {
entry = calloc( 1, sizeof(PolicyEntry) );
if (!entry) {
D_WARN( "out of memory" );
pthread_mutex_unlock( &policies_lock );
return;
}
entry->name = strdup( name );
direct_list_prepend( &policies, &entry->link );
}
entry->allowed = allow;
if (! ++policies_age)
policies_age++;
pthread_mutex_unlock( &policies_lock );
}
bool
coma_policy_check( ComaPolicy *policy )
{
bool allowed;
pthread_mutex_lock( &policies_lock );
allowed = check_policy( policy );
pthread_mutex_unlock( &policies_lock );
return allowed;
}
/**********************************************************************************************************************/
bool
coma_policy_check_manager( const char *manager )
{
ComaPolicy policy = COMA_POLICY_INIT( manager );
return coma_policy_check( &policy );
}
bool
coma_policy_check_component( const char *manager, const char *component )
{
char *policy_name;
if (asprintf( &policy_name, "%s/%s", manager, component ) < 0)
return DR_FAILURE;
ComaPolicy policy = COMA_POLICY_INIT( policy_name );
bool allowed = coma_policy_check( &policy );
free( policy_name );
return allowed;
}
bool
coma_policy_check_method( const char *manager, const char *component, unsigned int method )
{
char *policy_name;
if (asprintf( &policy_name, "%s/%s/m%u", manager, component, method ) < 0)
return DR_FAILURE;
ComaPolicy policy = COMA_POLICY_INIT( policy_name );
bool allowed = coma_policy_check( &policy );
free( policy_name );
return allowed;
}
bool
coma_policy_check_notification( const char *manager, const char *component, unsigned int notification )
{
char *policy_name;
if (asprintf( &policy_name, "%s/%s/n%u", manager, component, notification ) < 0)
return DR_FAILURE;
ComaPolicy policy = COMA_POLICY_INIT( policy_name );
bool allowed = coma_policy_check( &policy );
free( policy_name );
return allowed;
}
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