/*
* mgmt-keystore.c
* ---------------
* CLI 'keystore' commands.
*
* Copyright (c) 2016, NORDUnet A/S All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* - Neither the name of the NORDUnet nor the names of its contributors may
* be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#define HAL_OK CMSIS_HAL_OK
#include "stm-init.h"
#include "stm-keystore.h"
#include "stm-fpgacfg.h"
#include "stm-uart.h"
#include "mgmt-cli.h"
#include "mgmt-show.h"
/* Rename both CMSIS HAL_OK and libhal HAL_OK to disambiguate */
#undef HAL_OK
#define LIBHAL_OK HAL_OK
#include "hal.h"
#define HAL_STATIC_PKEY_STATE_BLOCKS 6
#include "hal_internal.h"
#undef HAL_OK
#include <stdlib.h>
#include <string.h>
int cmd_keystore_set_pin(struct cli_def *cli, const char *command, char *argv[], int argc)
{
const hal_ks_keydb_t *db;
hal_user_t user;
hal_error_t status;
hal_client_handle_t client = { -1 };
db = hal_ks_get_keydb();
if (db == NULL) {
cli_print(cli, "Could not get a keydb from libhal");
return CLI_OK;
}
if (argc != 2) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore set pin <user|so|wheel> <pin>");
return CLI_ERROR;
}
user = HAL_USER_NONE;
if (strcmp(argv[0], "user") == 0) user = HAL_USER_NORMAL;
if (strcmp(argv[0], "so") == 0) user = HAL_USER_SO;
if (strcmp(argv[0], "wheel") == 0) user = HAL_USER_WHEEL;
if (user == HAL_USER_NONE) {
cli_print(cli, "First argument must be 'user', 'so' or 'wheel' - not '%s'", argv[0]);
return CLI_ERROR;
}
status = hal_rpc_set_pin(client, user, argv[1], strlen(argv[1]));
if (status != LIBHAL_OK) {
cli_print(cli, "Failed setting PIN: %s", hal_error_string(status));
return CLI_ERROR;
}
return CLI_OK;
}
int cmd_keystore_clear_pin(struct cli_def *cli, const char *command, char *argv[], int argc)
{
const hal_ks_keydb_t *db;
hal_user_t user;
hal_ks_pin_t pin;
hal_error_t status;
db = hal_ks_get_keydb();
if (db == NULL) {
cli_print(cli, "Could not get a keydb from libhal");
return CLI_OK;
}
if (argc != 1) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore clear pin <user|so|wheel>");
return CLI_ERROR;
}
user = HAL_USER_NONE;
if (strcmp(argv[0], "user") == 0) user = HAL_USER_NORMAL;
if (strcmp(argv[0], "so") == 0) user = HAL_USER_SO;
if (strcmp(argv[0], "wheel") == 0) user = HAL_USER_WHEEL;
if (user == HAL_USER_NONE) {
cli_print(cli, "First argument must be 'user', 'so' or 'wheel' - not '%s'", argv[0]);
return CLI_ERROR;
}
memset(&pin, 0x0, sizeof(pin));
if ((status = hal_ks_set_pin(user, &pin)) != LIBHAL_OK) {
cli_print(cli, "Failed clearing PIN: %s", hal_error_string(status));
return CLI_ERROR;
}
return CLI_OK;
}
int cmd_keystore_set_pin_iterations(struct cli_def *cli, const char *command, char *argv[], int argc)
{
hal_error_t status;
hal_client_handle_t client = { -1 };
if (argc != 1) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore set pin iterations <number>");
return CLI_ERROR;
}
status = hal_set_pin_default_iterations(client, strtol(argv[0], NULL, 0));
if (status != LIBHAL_OK) {
cli_print(cli, "Failed setting iterations: %s", hal_error_string(status));
return CLI_ERROR;
}
return CLI_OK;
}
int cmd_keystore_set_key(struct cli_def *cli, const char *command, char *argv[], int argc)
{
hal_error_t status;
int hint = 0;
if (argc != 2) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore set key <name> <der>");
return CLI_ERROR;
}
if ((status = hal_ks_store(HAL_KEY_TYPE_EC_PUBLIC,
HAL_CURVE_NONE,
0,
(uint8_t *) argv[0], strlen(argv[0]),
(uint8_t *) argv[1], strlen(argv[1]),
&hint)) != LIBHAL_OK) {
cli_print(cli, "Failed storing key: %s", hal_error_string(status));
return CLI_ERROR;
}
cli_print(cli, "Stored key %i", hint);
return CLI_OK;
}
static int key_by_index(struct cli_def *cli, char *str, const uint8_t **name, size_t *name_len, hal_key_type_t *type)
{
char *end;
long index;
/* base=0, because someone will try to be clever, and enter '0x0001' */
index = strtol(str, &end, 0);
/* If strtol converted the whole string, it's an index.
* Otherwise, it could be something like "3Mustaphas3".
*/
if (*end == '\0') {
const hal_ks_keydb_t *db = hal_ks_get_keydb();
if (index < 0 || index >= sizeof(db->keys)/sizeof(*db->keys)) {
cli_print(cli, "Index %ld out of range", index);
return CLI_ERROR_ARG;
}
if (! db->keys[index].in_use) {
cli_print(cli, "Key %ld not in use", index);
return CLI_ERROR_ARG;
}
*name = db->keys[index].name;
*name_len = db->keys[index].name_len;
*type = db->keys[index].type;
return CLI_OK;
}
return CLI_ERROR;
}
int cmd_keystore_delete_key(struct cli_def *cli, const char *command, char *argv[], int argc)
{
hal_error_t status;
int hint = 0;
const uint8_t *name;
size_t name_len;
hal_key_type_t type;
if (argc != 1) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore delete key <name or index>");
return CLI_ERROR;
}
switch (key_by_index(cli, argv[0], &name, &name_len, &type)) {
case CLI_OK:
break;
case CLI_ERROR:
name = (uint8_t *)argv[0];
name_len = strlen(argv[0]);
type = HAL_KEY_TYPE_EC_PUBLIC;
break;
default:
return CLI_ERROR;
}
if ((status = hal_ks_delete(type, name, name_len, &hint)) != LIBHAL_OK) {
cli_print(cli, "Failed deleting key: %s", hal_error_string(status));
return CLI_ERROR;
}
cli_print(cli, "Deleted key %i", hint);
return CLI_OK;
}
int cmd_keystore_rename_key(struct cli_def *cli, const char *command, char *argv[], int argc)
{
hal_error_t status;
int hint = 0;
const uint8_t *name;
size_t name_len;
hal_key_type_t type;
if (argc != 2) {
cli_print(cli, "Wrong number of arguments (%i).", argc);
cli_print(cli, "Syntax: keystore rename key <name or index> <new name>");
return CLI_ERROR;
}
switch (key_by_index(cli, argv[0], &name, &name_len, &type)) {
case CLI_OK:
break;
case CLI_ERROR:
name = (uint8_t *)argv[0];
name_len = strlen(argv[0]);
type = HAL_KEY_TYPE_EC_PUBLIC;
break;
default:
return CLI_ERROR;
}
if ((status = hal_ks_rename(type, name, name_len, (uint8_t *)argv[1], strlen(argv[1]), &hint)) != LIBHAL_OK) {
cli_print(cli, "Failed renaming key: %s", hal_error_string(status));
return CLI_ERROR;
}
cli_print(cli, "Renamed key %i", hint);
return CLI_OK;
}
int cmd_keystore_show_keys(struct cli_def *cli, const char *command, char *argv[], int argc)
{
const hal_ks_keydb_t *db;
uint8_t name[HAL_RPC_PKEY_NAME_MAX + 1];
char *type;
db = hal_ks_get_keydb();
if (db == NULL) {
cli_print(cli, "Could not get a keydb from libhal");
return CLI_OK;
}
/* cli_print(cli, "Sizeof db->keys is %i, sizeof one key is %i\n", sizeof(db->keys), sizeof(*db->keys)); */
for (int i = 0; i < sizeof(db->keys)/sizeof(*db->keys); i++) {
if (! db->keys[i].in_use) {
cli_print(cli, "Key %i, not in use", i);
} else {
switch (db->keys[i].type) {
case HAL_KEY_TYPE_RSA_PRIVATE:
type = "RSA private";
break;
case HAL_KEY_TYPE_RSA_PUBLIC:
type = "RSA public";
break;
case HAL_KEY_TYPE_EC_PRIVATE:
type = "EC private";
break;
case HAL_KEY_TYPE_EC_PUBLIC:
type = "EC public";
break;
default:
type = "unknown";
break;
}
/* name is nul-terminated */
memcpy(name, db->keys[i].name, db->keys[i].name_len);
name[db->keys[i].name_len] = '\0';
cli_print(cli, "Key %i, type %s, name '%s'", i, type, name);
}
}
cli_print(cli, "\nPins:");
cli_print(cli, "Wheel iterations: 0x%lx", db->wheel_pin.iterations);
cli_print(cli, "SO iterations: 0x%lx", db->so_pin.iterations);
cli_print(cli, "User iterations: 0x%lx", db->user_pin.iterations);
return CLI_OK;
}
int cmd_keystore_erase(struct cli_def *cli, const char *command, char *argv[], int argc)
{
int status;
if (argc != 1) {
cli_print(cli, "Syntax: keystore erase YesIAmSure");
return CLI_ERROR;
}
if (strcmp(argv[0], "YesIAmSure") == 0) {
if ((status = keystore_erase_sectors(0, 1)) != 1) {
cli_print(cli, "Failed erasing keystore: %i", status);
} else {
cli_print(cli, "Keystore erased (first two sectors at least)");
}
} else {
cli_print(cli, "Keystore NOT erased");
}
return CLI_OK;
}
void configure_cli_keystore(struct cli_def *cli)
{
/* keystore */
cli_command_root(keystore);
/* keystore set */
cli_command_branch(keystore, set);
/* keystore clear */
cli_command_branch(keystore, clear);
/* keystore delete */
cli_command_branch(keystore, delete);
/* keystore rename */
cli_command_branch(keystore, rename);
/* keystore show */
cli_command_branch(keystore, show);
/* keystore erase */
cli_command_node(keystore, erase, "Erase the whole keystore");
/* keystore set pin */
cli_command_node(keystore_set, pin, "Set either 'wheel', 'user' or 'so' PIN");
/* keystore set pin iterations */
cli_command_node(keystore_set_pin, iterations, "Set PBKDF2 iterations for PINs");
/* keystore clear pin */
cli_command_node(keystore_clear, pin, "Clear either 'wheel', 'user' or 'so' PIN");
/* keystore set key */
cli_command_node(keystore_set, key, "Set a key");
/* keystore delete key */
cli_command_node(keystore_delete, key, "Delete a key");
/* keystore rename key */
cli_command_node(keystore_rename, key, "Rename a key");
/* keystore show keys */
cli_command_node(keystore_show, keys, "Show what PINs and keys are in the keystore");
}
