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Diffstat (limited to 'Source/FusionDale/src/coma/policy.c')
| -rwxr-xr-x | Source/FusionDale/src/coma/policy.c | 206 |
1 files changed, 206 insertions, 0 deletions
diff --git a/Source/FusionDale/src/coma/policy.c b/Source/FusionDale/src/coma/policy.c new file mode 100755 index 0000000..a324ac4 --- /dev/null +++ b/Source/FusionDale/src/coma/policy.c @@ -0,0 +1,206 @@ +/* + (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; +} + |