Annotation of embedaddon/strongswan/src/libcharon/sa/eap/eap_manager.c, revision 1.1
1.1 ! misho 1: /*
! 2: * Copyright (C) 2012 Tobias Brunner
! 3: * Copyright (C) 2008 Martin Willi
! 4: * HSR Hochschule fuer Technik Rapperswil
! 5: *
! 6: * This program is free software; you can redistribute it and/or modify it
! 7: * under the terms of the GNU General Public License as published by the
! 8: * Free Software Foundation; either version 2 of the License, or (at your
! 9: * option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
! 10: *
! 11: * This program is distributed in the hope that it will be useful, but
! 12: * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
! 13: * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
! 14: * for more details.
! 15: */
! 16:
! 17: #include "eap_manager.h"
! 18:
! 19: #include <collections/linked_list.h>
! 20: #include <threading/rwlock.h>
! 21:
! 22: typedef struct private_eap_manager_t private_eap_manager_t;
! 23: typedef struct eap_entry_t eap_entry_t;
! 24:
! 25: /**
! 26: * EAP constructor entry
! 27: */
! 28: struct eap_entry_t {
! 29:
! 30: /**
! 31: * EAP method type, vendor specific if vendor is set
! 32: */
! 33: eap_type_t type;
! 34:
! 35: /**
! 36: * vendor ID, 0 for default EAP methods
! 37: */
! 38: uint32_t vendor;
! 39:
! 40: /**
! 41: * Role of the method returned by the constructor, EAP_SERVER or EAP_PEER
! 42: */
! 43: eap_role_t role;
! 44:
! 45: /**
! 46: * constructor function to create instance
! 47: */
! 48: eap_constructor_t constructor;
! 49: };
! 50:
! 51: /**
! 52: * private data of eap_manager
! 53: */
! 54: struct private_eap_manager_t {
! 55:
! 56: /**
! 57: * public functions
! 58: */
! 59: eap_manager_t public;
! 60:
! 61: /**
! 62: * list of eap_entry_t's
! 63: */
! 64: linked_list_t *methods;
! 65:
! 66: /**
! 67: * rwlock to lock methods
! 68: */
! 69: rwlock_t *lock;
! 70: };
! 71:
! 72: METHOD(eap_manager_t, add_method, void,
! 73: private_eap_manager_t *this, eap_type_t type, uint32_t vendor,
! 74: eap_role_t role, eap_constructor_t constructor)
! 75: {
! 76: eap_entry_t *entry = malloc_thing(eap_entry_t);
! 77:
! 78: entry->type = type;
! 79: entry->vendor = vendor;
! 80: entry->role = role;
! 81: entry->constructor = constructor;
! 82:
! 83: this->lock->write_lock(this->lock);
! 84: this->methods->insert_last(this->methods, entry);
! 85: this->lock->unlock(this->lock);
! 86: }
! 87:
! 88: METHOD(eap_manager_t, remove_method, void,
! 89: private_eap_manager_t *this, eap_constructor_t constructor)
! 90: {
! 91: enumerator_t *enumerator;
! 92: eap_entry_t *entry;
! 93:
! 94: this->lock->write_lock(this->lock);
! 95: enumerator = this->methods->create_enumerator(this->methods);
! 96: while (enumerator->enumerate(enumerator, &entry))
! 97: {
! 98: if (constructor == entry->constructor)
! 99: {
! 100: this->methods->remove_at(this->methods, enumerator);
! 101: free(entry);
! 102: }
! 103: }
! 104: enumerator->destroy(enumerator);
! 105: this->lock->unlock(this->lock);
! 106: }
! 107:
! 108: CALLBACK(filter_methods, bool,
! 109: uintptr_t role, enumerator_t *orig, va_list args)
! 110: {
! 111: eap_entry_t *entry;
! 112: eap_type_t *type;
! 113: uint32_t *vendor;
! 114:
! 115: VA_ARGS_VGET(args, type, vendor);
! 116:
! 117: while (orig->enumerate(orig, &entry))
! 118: {
! 119: if (entry->role != (eap_role_t)role)
! 120: {
! 121: continue;
! 122: }
! 123: if (entry->vendor == 0 &&
! 124: (entry->type < 4 || entry->type == EAP_EXPANDED ||
! 125: entry->type > EAP_EXPERIMENTAL))
! 126: { /* filter invalid types */
! 127: continue;
! 128: }
! 129: if (type)
! 130: {
! 131: *type = entry->type;
! 132: }
! 133: if (vendor)
! 134: {
! 135: *vendor = entry->vendor;
! 136: }
! 137: return TRUE;
! 138: }
! 139: return FALSE;
! 140: }
! 141:
! 142: METHOD(eap_manager_t, create_enumerator, enumerator_t*,
! 143: private_eap_manager_t *this, eap_role_t role)
! 144: {
! 145: this->lock->read_lock(this->lock);
! 146: return enumerator_create_cleaner(
! 147: enumerator_create_filter(
! 148: this->methods->create_enumerator(this->methods),
! 149: filter_methods, (void*)(uintptr_t)role, NULL),
! 150: (void*)this->lock->unlock, this->lock);
! 151: }
! 152:
! 153: METHOD(eap_manager_t, create_instance, eap_method_t*,
! 154: private_eap_manager_t *this, eap_type_t type, uint32_t vendor,
! 155: eap_role_t role, identification_t *server, identification_t *peer)
! 156: {
! 157: enumerator_t *enumerator;
! 158: eap_entry_t *entry;
! 159: eap_method_t *method = NULL;
! 160:
! 161: this->lock->read_lock(this->lock);
! 162: enumerator = this->methods->create_enumerator(this->methods);
! 163: while (enumerator->enumerate(enumerator, &entry))
! 164: {
! 165: if (type == entry->type && vendor == entry->vendor &&
! 166: role == entry->role)
! 167: {
! 168: method = entry->constructor(server, peer);
! 169: if (method)
! 170: {
! 171: break;
! 172: }
! 173: }
! 174: }
! 175: enumerator->destroy(enumerator);
! 176: this->lock->unlock(this->lock);
! 177: return method;
! 178: }
! 179:
! 180: METHOD(eap_manager_t, destroy, void,
! 181: private_eap_manager_t *this)
! 182: {
! 183: this->methods->destroy_function(this->methods, free);
! 184: this->lock->destroy(this->lock);
! 185: free(this);
! 186: }
! 187:
! 188: /*
! 189: * See header
! 190: */
! 191: eap_manager_t *eap_manager_create()
! 192: {
! 193: private_eap_manager_t *this;
! 194:
! 195: INIT(this,
! 196: .public = {
! 197: .add_method = _add_method,
! 198: .remove_method = _remove_method,
! 199: .create_enumerator = _create_enumerator,
! 200: .create_instance = _create_instance,
! 201: .destroy = _destroy,
! 202: },
! 203: .methods = linked_list_create(),
! 204: .lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
! 205: );
! 206:
! 207: return &this->public;
! 208: }
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to eap_manager.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / strongswan / src / libcharon / sa / eap