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/*
**
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License");
** you may not use this file except in compliance with the License.
** You may obtain a copy of the License at
**
** http://www.apache.org/licenses/LICENSE-2.0
**
** Unless required by applicable law or agreed to in writing, software
** distributed under the License is distributed on an "AS IS" BASIS,
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
** See the License for the specific language governing permissions and
** limitations under the License.
*/
#ifndef __CERTTOOL_H__
#define __CERTTOOL_H__
#include <stdio.h>
#include <string.h>
#include <cutils/sockets.h>
#include <cutils/log.h>
#include "common.h"
#include "netkeystore.h"
/*
* The specific function 'get_cert' is used in daemons to get the key value
* from keystore. Caller should allocate the buffer and the length of the buffer
* should be MAX_KEY_VALUE_LENGTH.
*/
static inline int get_cert(char *certname, unsigned char *value, int *size)
{
int count, fd, ret = -1;
LPC_MARSHAL cmd;
char delimiter[] = "_";
char *namespace, *keyname;
char *context = NULL;
if (value == NULL) {
LOGE("get_cert: value is null\n");
return -1;
}
fd = socket_local_client(SOCKET_PATH,
ANDROID_SOCKET_NAMESPACE_RESERVED,
SOCK_STREAM);
if (fd == -1) {
LOGE("Keystore service is not up and running.\n");
return -1;
}
cmd.opcode = GET;
if (((namespace = strtok_r(certname, delimiter, &context)) == NULL) ||
((keyname = strtok_r(NULL, delimiter, &context)) == NULL)) {
goto err;
}
if ((cmd.len = snprintf((char*)cmd.data, BUFFER_MAX, "%s %s", namespace, keyname))
> (2 * MAX_KEY_NAME_LENGTH + 1)) goto err;
if (write_marshal(fd, &cmd)) {
LOGE("Incorrect command or command line is too long.\n");
goto err;
}
if (read_marshal(fd, &cmd)) {
LOGE("Failed to read the result.\n");
goto err;
}
// copy the result if succeeded.
if (!cmd.retcode && cmd.len <= BUFFER_MAX) {
memcpy(value, cmd.data, cmd.len);
ret = 0;
*size = cmd.len;
}
err:
close(fd);
return ret;
}
#endif
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