Adding an Android specific credential set.
This commit is contained in:
Tobias Brunner
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/*
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* Copyright (C) 2010 Tobias Brunner
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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#include <keystore_get.h>
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#include "android_creds.h"
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#include <daemon.h>
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#include <threading/rwlock.h>
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typedef struct private_android_creds_t private_android_creds_t;
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/**
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* Private data of an android_creds_t object
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*/
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struct private_android_creds_t {
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/**
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* Public interface
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*/
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android_creds_t public;
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/**
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* List of trusted certificates, certificate_t*
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*/
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linked_list_t *certs;
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/**
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* User name (ID)
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*/
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identification_t *user;
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/**
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* User password
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*/
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char *pass;
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/**
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* read/write lock
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*/
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rwlock_t *lock;
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};
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/**
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* Certificate enumerator data
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*/
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typedef struct {
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private_android_creds_t *this;
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key_type_t key;
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identification_t *id;
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} cert_data_t;
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/**
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* Filter function for certificates enumerator
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*/
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static bool cert_filter(cert_data_t *data, certificate_t **in,
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certificate_t **out)
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{
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certificate_t *cert = *in;
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public_key_t *public;
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public = cert->get_public_key(cert);
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if (!public)
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{
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return FALSE;
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}
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if (data->key != KEY_ANY && public->get_type(public) != data->key)
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{
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public->destroy(public);
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return FALSE;
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}
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if (data->id && data->id->get_type(data->id) == ID_KEY_ID &&
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public->has_fingerprint(public, data->id->get_encoding(data->id)))
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{
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public->destroy(public);
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*out = cert;
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return TRUE;
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}
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public->destroy(public);
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if (data->id && !cert->has_subject(cert, data->id))
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{
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return FALSE;
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}
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*out = cert;
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return TRUE;
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}
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/**
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* Destroy certificate enumerator data
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*/
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static void cert_data_destroy(cert_data_t *this)
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{
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this->this->lock->unlock(this->this->lock);
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free(this);
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}
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METHOD(credential_set_t, create_cert_enumerator, enumerator_t*,
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private_android_creds_t *this, certificate_type_t cert, key_type_t key,
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identification_t *id, bool trusted)
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{
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if (cert == CERT_X509 || cert == CERT_ANY)
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{
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cert_data_t *data;
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this->lock->read_lock(this->lock);
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INIT(data, .this = this, .id = id, .key = key);
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return enumerator_create_filter(
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this->certs->create_enumerator(this->certs),
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(void*)cert_filter, data, (void*)cert_data_destroy);
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}
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return NULL;
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}
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/**
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* Shared key enumerator implementation
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*/
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typedef struct {
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enumerator_t public;
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private_android_creds_t *this;
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shared_key_t *key;
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bool done;
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} shared_enumerator_t;
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METHOD(enumerator_t, shared_enumerate, bool,
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shared_enumerator_t *this, shared_key_t **key, id_match_t *me,
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id_match_t *other)
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{
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if (this->done)
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{
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return FALSE;
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}
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*key = this->key;
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*me = ID_MATCH_PERFECT;
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*other = ID_MATCH_ANY;
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this->done = TRUE;
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return TRUE;
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}
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METHOD(enumerator_t, shared_destroy, void,
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shared_enumerator_t *this)
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{
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this->key->destroy(this->key);
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this->this->lock->unlock(this->this->lock);
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free(this);
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}
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METHOD(credential_set_t, create_shared_enumerator, enumerator_t*,
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private_android_creds_t *this, shared_key_type_t type,
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identification_t *me, identification_t *other)
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{
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shared_enumerator_t *enumerator;
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this->lock->read_lock(this->lock);
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if (!this->user || !this->pass)
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{
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this->lock->unlock(this->lock);
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return NULL;
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}
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if (type != SHARED_EAP && type != SHARED_IKE)
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{
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this->lock->unlock(this->lock);
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return NULL;
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}
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if (me && !me->equals(me, this->user))
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{
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this->lock->unlock(this->lock);
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return NULL;
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}
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INIT(enumerator,
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.public = {
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.enumerate = (void*)_shared_enumerate,
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.destroy = _shared_destroy,
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},
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.this = this,
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.done = FALSE,
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.key = shared_key_create(type, chunk_clone(chunk_create(this->pass,
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strlen(this->pass)))),
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);
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return &enumerator->public;
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}
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METHOD(android_creds_t, add_certificate, bool,
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private_android_creds_t *this, char *name)
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{
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certificate_t *cert = NULL;
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bool status = FALSE;
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chunk_t chunk;
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this->lock->write_lock(this->lock);
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chunk.ptr = keystore_get(name, &chunk.len);
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if (chunk.ptr)
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{
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cert = lib->creds->create(lib->creds, CRED_CERTIFICATE, CERT_X509,
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BUILD_BLOB_PEM, chunk, BUILD_END);
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if (cert)
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{
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this->certs->insert_last(this->certs, cert);
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status = TRUE;
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}
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free(chunk.ptr);
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}
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this->lock->unlock(this->lock);
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return status;
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}
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METHOD(android_creds_t, set_username_password, void,
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private_android_creds_t *this, identification_t *id, char *password)
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{
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this->lock->write_lock(this->lock);
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DESTROY_IF(this->user);
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this->user = id->clone(id);
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free(this->pass);
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this->pass = password ? strdup(password) : NULL;
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this->lock->unlock(this->lock);
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}
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METHOD(android_creds_t, clear, void,
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private_android_creds_t *this)
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{
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certificate_t *cert;
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this->lock->write_lock(this->lock);
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while (this->certs->remove_last(this->certs, (void**)&cert) == SUCCESS)
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{
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cert->destroy(cert);
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}
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DESTROY_IF(this->user);
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free(this->pass);
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this->user = NULL;
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this->pass = NULL;
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this->lock->unlock(this->lock);
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}
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METHOD(android_creds_t, destroy, void,
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private_android_creds_t *this)
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{
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clear(this);
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this->certs->destroy(this->certs);
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this->lock->destroy(this->lock);
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free(this);
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}
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/**
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* Described in header.
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*/
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android_creds_t *android_creds_create()
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{
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private_android_creds_t *this;
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INIT(this,
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.public = {
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.set = {
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.create_cert_enumerator = _create_cert_enumerator,
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.create_shared_enumerator = _create_shared_enumerator,
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.create_private_enumerator = (void*)return_null,
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.create_cdp_enumerator = (void*)return_null,
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.cache_cert = (void*)nop,
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},
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.add_certificate = _add_certificate,
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.set_username_password = _set_username_password,
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.clear = _clear,
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.destroy = _destroy,
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},
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.certs = linked_list_create(),
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.lock = rwlock_create(RWLOCK_TYPE_DEFAULT),
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);
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return &this->public;
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}
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