mirror of
https://github.com/projectacrn/acrn-hypervisor.git
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DM: Refactor RPMB files
Move rpmb_sim.c and rpmb_backend.c to hw/platform/rpmb/ Signed-off-by: Huang Yang <yang.huang@intel.com> Reviewed-by: Kevin Tian <kevin.tian@intel.com>
This commit is contained in:
Huang, Yang
lijinxia
@@ -1,530 +0,0 @@
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/*
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* Copyright (C) 2018 Intel Corporation
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer in
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* this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <string.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <fcntl.h>
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#include <unistd.h>
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#include <sys/ioctl.h>
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#include <stdbool.h>
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#include "rpmb.h"
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#include "rpmb_sim.h"
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#include "vrpmb.h"
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#include "rpmb_backend.h"
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static int virtio_rpmb_debug = 1;
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#define DPRINTF(params) do { if (virtio_rpmb_debug) printf params; } while (0)
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#define WPRINTF(params) (printf params)
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#define READ_STR_LEN 10
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#define WRITE_STR_LEN 11
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static uint32_t phy_counter = 0;
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static uint32_t virt_counter = 0;
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static uint8_t rpmb_key[RPMB_KEY_32_LEN] = {0};
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static uint8_t virt_rpmb_key[RPMB_KEY_32_LEN] = {0};
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static uint16_t g_rpmb_mode = RPMB_SIM_MODE;
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static const char READ_DATA_STR[READ_STR_LEN] = "read data";
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static const char WRITE_DATA_STR[WRITE_STR_LEN] = "write data";
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//TODO: will be read from config file.
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static uint16_t get_uos_count(void)
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{
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return 1;
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}
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//TODO: will be predefined and read from config file.
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static uint16_t get_rpmb_blocks(void)
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{
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return rpmb_get_blocks();
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}
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//TODO: hardcode keybox size. It will be read from keybox header from RPMB.
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static uint16_t get_common_blocks(void)
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{
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uint16_t kb_blocks;
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uint32_t kb_size = 15872;
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kb_blocks = (kb_size + (RPMB_BLOCK_SIZE -1)) / RPMB_BLOCK_SIZE;
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//reserve for simulated rpmb + KBox header + padding
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return kb_blocks + 1 + 1 + 1;
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}
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static uint16_t get_accessible_blocks(void)
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{
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return (get_rpmb_blocks() - get_common_blocks()) /
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get_uos_count() + get_common_blocks();
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}
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/* Todo: To get the uos number, e.g. No.0 or No.1, which is
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used for calculating UOS RPMB range address.
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But this will be removed after config file is supported.
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We plan to predefine such info and save to config file.
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*/
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static uint8_t get_uos_id(void)
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{
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return (get_uos_count() - 1);
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}
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void rpmb_mode_init(uint16_t mode)
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{
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g_rpmb_mode = mode;
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DPRINTF(("%s: rpmb mode is %d\n", __func__, g_rpmb_mode));
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}
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void rpmb_counter_init(uint32_t counter)
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{
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phy_counter = counter;
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}
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static bool is_key_programmed(void)
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{
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if (g_rpmb_mode == RPMB_PHY_MODE) {
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return true;
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} else if (g_rpmb_mode == RPMB_SIM_MODE) {
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if (is_use_sim_rpmb())
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return true;
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}
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DPRINTF(("%s: rpmb mode 0x%x is unsupported\n", __func__, g_rpmb_mode));
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return false;
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}
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static uint16_t get_phy_addr(uint8_t uos_id, uint16_t vaddr)
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{
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uint16_t common_blocks = get_common_blocks();
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uint16_t accessible_blocks = get_accessible_blocks();
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if (vaddr < get_common_blocks()) {
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return vaddr;
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} else {
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return (((accessible_blocks - common_blocks) * uos_id) + vaddr);
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}
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}
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int get_virt_rpmb_key(void)
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{
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int rc = -1;
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uint8_t key[RPMB_KEY_LEN];
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rc = get_vrpmb_key(key, sizeof(key));
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if (rc == 0){
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DPRINTF(("%s: get uos key fail\n", __func__));
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}
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memcpy(virt_rpmb_key, key, RPMB_KEY_32_LEN);
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memset(key, 0, RPMB_KEY_LEN);
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return rc;
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}
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static int rpmb_replace_frame(struct rpmb_frame *frames, uint32_t frame_cnt,
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const uint8_t *key, const uint8_t *nonce, const uint32_t *write_counter,
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const uint16_t *addr, const uint16_t *block_count, const int *result, const int *req_resp)
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{
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uint32_t i;
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for (i = 0; i < frame_cnt; i++) {
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if (nonce)
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memcpy(frames[i].nonce, nonce, sizeof(frames[i].nonce));
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if (write_counter)
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frames[i].write_counter = swap32(*write_counter);
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if (addr)
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frames[i].addr = swap16(*addr);
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if (block_count)
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frames[i].block_count = swap16(*block_count);
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if (result)
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frames[i].result = swap16(*result);
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if (req_resp)
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frames[i].req_resp = swap16(*req_resp);
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}
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if (key) {
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if (rpmb_mac(key, frames, frame_cnt, frames[frame_cnt - 1].key_mac)) {
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DPRINTF(("%s: rpmb_mac failed\n", __func__));
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return -1;
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}
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}
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return 0;
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}
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static int rpmb_check_frame(const char *cmd_str, int *err,
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const struct rpmb_frame *frames, uint32_t frame_cnt,
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const uint8_t *key, const uint32_t *write_counter,
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const uint16_t *addr, const uint16_t *block_count)
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{
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uint32_t i;
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uint8_t mac[32];
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for (i = 0; i < frame_cnt; i++) {
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if (write_counter && *write_counter != swap32(frames[i].write_counter)) {
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*err = RPMB_RES_COUNT_FAILURE;
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DPRINTF(("%s: Bad write counter %u\n", cmd_str, *write_counter));
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return -1;
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}
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}
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if (addr && *addr >= get_accessible_blocks()) {
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*err = RPMB_RES_ADDR_FAILURE;
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DPRINTF(("%s: Bad addr, got %u, expected %u\n",
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cmd_str, swap16(frames[i].addr), *addr));
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return -1;
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}
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if (addr && block_count && (*addr + *block_count) > get_accessible_blocks()) {
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*err = RPMB_RES_GENERAL_FAILURE;
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DPRINTF(("%s: Bad block count %u\n",
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cmd_str, *block_count));
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return -1;
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}
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if (addr && !memcmp(cmd_str, WRITE_DATA_STR, sizeof(WRITE_DATA_STR))) {
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if (*addr < get_common_blocks()) {
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*err = RPMB_RES_WRITE_FAILURE;
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DPRINTF(("%s: Common block is read only\n", cmd_str));
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return -1;
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}
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}
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if (key) {
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if (rpmb_mac(key, frames, frame_cnt, mac)) {
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*err = RPMB_RES_GENERAL_FAILURE;
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DPRINTF(("%s: rpmb_mac failed\n", cmd_str));
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return -1;
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}
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if (memcmp(frames[frame_cnt - 1].key_mac, mac, sizeof(mac))) {
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*err = RPMB_RES_AUTH_FAILURE;
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DPRINTF(("%s: Bad MAC\n", cmd_str));
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return -1;
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}
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}
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return 0;
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}
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static int rpmb_phy_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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int rc = -1;
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int fd;
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if (seq_data == NULL) {
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DPRINTF(("%s: seq_data is NULL\n", __func__));
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return rc;
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}
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/* open rpmb device.*/
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fd = open(RPMB_PHY_PATH_NAME, O_RDWR | O_NONBLOCK);
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if (fd < 0) {
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DPRINTF(("%s: failed to open %s.\n", __func__, RPMB_PHY_PATH_NAME));
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return fd;
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}
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/* send ioctl cmd.*/
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rc = ioctl(fd, ioc_cmd, seq_data);
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if (rc)
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DPRINTF(("%s: seq ioctl cmd failed(%d).\n", __func__, rc));
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/* close rpmb device.*/
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close(fd);
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return rc;
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}
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static int rpmb_sim_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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if (seq_data == NULL) {
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DPRINTF(("%s: seq_data is NULL\n", __func__));
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return -1;
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}
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switch (ioc_cmd) {
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case RPMB_IOC_REQ_CMD:
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case RPMB_IOC_SEQ_CMD:
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return rpmb_sim_send(seq_data);
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default:
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DPRINTF(("%s: ioctl 0x%x is unsupported\n", __func__, ioc_cmd));
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return -1;
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}
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}
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static int rpmb_virt_ioctl(uint32_t ioc_cmd, void* seq_data)
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{
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if (g_rpmb_mode == RPMB_PHY_MODE) {
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return rpmb_phy_ioctl(ioc_cmd, seq_data);
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} else if (g_rpmb_mode == RPMB_SIM_MODE) {
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return rpmb_sim_ioctl(ioc_cmd, seq_data);
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}
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DPRINTF(("%s: rpmb mode 0x%x is unsupported\n", __func__, g_rpmb_mode));
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return -1;
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}
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static int rpmb_virt_write(uint32_t ioc_cmd, void* seq_data,
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struct rpmb_frame* in_frame, uint32_t in_cnt,
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struct rpmb_frame* out_frame, uint32_t out_cnt)
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{
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int err = RPMB_RES_WRITE_FAILURE;
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int resp = RPMB_RESP_DATA_WRITE;
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uint16_t vaddr;
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uint16_t paddr;
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uint16_t block_count;
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uint8_t uos_id;
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__u16 rpmb_result = 0;
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int rc;
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if (in_cnt == 0 || in_frame == NULL || seq_data == NULL) {
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DPRINTF(("%s: in_frame, in_cnt or seq_data is not available.\n", __func__));
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return -1;
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}
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if (out_cnt > 0 && out_frame != NULL) {
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memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
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} else {
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DPRINTF(("%s: vrpmb must be aware of the result in out_frame.\n", __func__));
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return -1;
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}
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uos_id = get_uos_id();
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vaddr = swap16(in_frame->addr);
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block_count = in_cnt;
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if (rpmb_check_frame(WRITE_DATA_STR, &err, in_frame, in_cnt,
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virt_rpmb_key, &virt_counter, &vaddr, &block_count))
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goto out;
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paddr = get_phy_addr(uos_id, vaddr);
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if (rpmb_replace_frame(in_frame, in_cnt, rpmb_key, NULL,
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&phy_counter, &paddr, NULL, NULL, NULL))
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{
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err = RPMB_RES_GENERAL_FAILURE;
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goto out;
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}
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if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
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DPRINTF(("%s: rpmb virt ioctl failed.\n", __func__));
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return -1;
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}
|
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if (out_frame->result == swap16(RPMB_RES_COUNT_FAILURE)) {
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memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
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rc = rpmb_get_counter(g_rpmb_mode, rpmb_key, &phy_counter, &rpmb_result);
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if (rc) {
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DPRINTF(("%s: rpmb_get_counter failed(0x%x)\n", __func__, rpmb_result));
|
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return -1;
|
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}
|
||||
|
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/* Since phy_counter has changed, so we have to generate mac again*/
|
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if (rpmb_replace_frame(in_frame, in_cnt, rpmb_key, NULL,
|
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&phy_counter, &paddr, NULL, NULL, NULL))
|
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{
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
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goto out;
|
||||
}
|
||||
|
||||
if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
|
||||
DPRINTF(("%s: rpmb virt retry ioctl failed.\n", __func__));
|
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return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (out_frame->result == RPMB_RES_OK) {
|
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phy_counter++;
|
||||
virt_counter++;
|
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}
|
||||
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, NULL,
|
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&virt_counter, &vaddr, NULL, NULL, NULL);
|
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|
||||
return 0;
|
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out:
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, in_frame[0].nonce,
|
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&virt_counter, &vaddr, &block_count, &err, &resp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rpmb_virt_read(uint32_t ioc_cmd, void* seq_data,
|
||||
struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int err = RPMB_RES_READ_FAILURE;
|
||||
int resp = RPMB_RESP_DATA_READ;
|
||||
uint16_t vaddr;
|
||||
uint16_t paddr;
|
||||
uint16_t block_count;
|
||||
uint8_t uos_id;
|
||||
|
||||
if (in_cnt == 0 || in_frame == NULL) {
|
||||
DPRINTF(("%s: in_frame, in_cnt or seq_data is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (out_cnt == 0 || out_frame == NULL) {
|
||||
DPRINTF(("%s: out_frame or out_cnt is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
uos_id = get_uos_id();
|
||||
|
||||
memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
|
||||
vaddr = swap16(in_frame->addr);
|
||||
block_count = out_cnt;
|
||||
|
||||
if (rpmb_check_frame(READ_DATA_STR, &err, in_frame,
|
||||
in_cnt, NULL, NULL, &vaddr, &block_count))
|
||||
goto out;
|
||||
|
||||
paddr = get_phy_addr(uos_id, vaddr);
|
||||
if (rpmb_replace_frame(in_frame, in_cnt, NULL,
|
||||
NULL, NULL, &paddr, NULL, NULL, NULL )) {
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (rpmb_virt_ioctl(ioc_cmd, seq_data)) {
|
||||
DPRINTF(("%s: rpmb ioctl failed\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, NULL,
|
||||
NULL, &vaddr, NULL, NULL, NULL);
|
||||
|
||||
return 0;
|
||||
out:
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key, in_frame[0].nonce,
|
||||
NULL, &vaddr, &block_count, &err, &resp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rpmb_virt_get_counter(struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int err = RPMB_RES_OK;
|
||||
int resp = RPMB_RESP_GET_COUNTER;
|
||||
|
||||
if (in_cnt == 0 || in_frame == NULL) {
|
||||
DPRINTF(("%s: in_frame or in_cnt is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (out_cnt == 0 || out_frame == NULL) {
|
||||
DPRINTF(("%s: out_frame or out_cnt is not available\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
memset(out_frame, 0, out_cnt * RPMB_FRAME_SIZE);
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
DPRINTF(("%s: rpmb key is not programmed\n", __func__));
|
||||
err = RPMB_RES_NO_AUTH_KEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key,
|
||||
in_frame[0].nonce, &virt_counter, NULL, NULL, &err, &resp);
|
||||
|
||||
return 0;
|
||||
|
||||
out:
|
||||
rpmb_replace_frame(out_frame, out_cnt, virt_rpmb_key,
|
||||
in_frame[0].nonce, NULL, NULL, NULL, &err, &resp);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
int rpmb_handler(uint32_t cmd, void *r)
|
||||
{
|
||||
int rc = -1;
|
||||
uint16_t i;
|
||||
uint32_t write_cnt = 0;
|
||||
uint32_t rel_write_cnt = 0;
|
||||
uint32_t read_cnt = 0;
|
||||
struct rpmb_frame *frame_write = NULL;
|
||||
struct rpmb_frame *frame_rel_write = NULL;
|
||||
struct rpmb_frame *frame_read = NULL;
|
||||
struct rpmb_ioc_cmd *ioc_cmd = NULL;
|
||||
struct rpmb_ioc_seq_data *iseq = r;
|
||||
|
||||
if (r == NULL) {
|
||||
DPRINTF(("%s: rpmb iocctl seq data is NULL\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
for (i = 0; i < iseq->h.num_of_cmds; i++) {
|
||||
ioc_cmd = (struct rpmb_ioc_cmd *)(&iseq->cmd[i]);
|
||||
if (ioc_cmd->flags == 0) {
|
||||
frame_read = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
read_cnt = ioc_cmd->nframes;
|
||||
} else if (ioc_cmd->flags == RPMB_F_WRITE) {
|
||||
frame_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
write_cnt = ioc_cmd->nframes;
|
||||
} else if (ioc_cmd->flags == (RPMB_F_WRITE | RPMB_F_REL_WRITE)) {
|
||||
frame_rel_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
rel_write_cnt = ioc_cmd->nframes;
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb_ioc_cmd is invalid in the rpmb_ioc_seq_data\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
}
|
||||
|
||||
if (rel_write_cnt) {
|
||||
if (frame_rel_write[0].req_resp == swap16(RPMB_REQ_DATA_WRITE)) {
|
||||
if (write_cnt && (frame_write->req_resp == swap16(RPMB_REQ_RESULT_READ)))
|
||||
rc = rpmb_virt_write(cmd, r, frame_rel_write,
|
||||
rel_write_cnt, frame_read, read_cnt);
|
||||
else
|
||||
rc = rpmb_virt_write(cmd, r, frame_rel_write, rel_write_cnt, NULL, 0);
|
||||
} else if (frame_rel_write[0].req_resp == swap16(RPMB_REQ_PROGRAM_KEY)) {
|
||||
DPRINTF(("%s: rpmb grogram key is unsupported\n", __func__));
|
||||
goto err_response;
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb ioctl frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
} else if (write_cnt) {
|
||||
if (frame_write[0].req_resp == swap16(RPMB_REQ_DATA_READ)) {
|
||||
rc = rpmb_virt_read(cmd, r, frame_write, 1, frame_read, read_cnt);
|
||||
} else if (frame_write[0].req_resp == swap16(RPMB_REQ_GET_COUNTER)) {
|
||||
rc = rpmb_virt_get_counter(frame_write, 1, frame_read, 1);
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb get counter frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb ioctl frame is invalid\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
return rc;
|
||||
|
||||
err_response:
|
||||
return -1;
|
||||
}
|
||||
@@ -1,657 +0,0 @@
|
||||
/*
|
||||
* Copyright (c) 2018 Intel Corporation
|
||||
* All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without
|
||||
* modification, are permitted provided that the following conditions
|
||||
* are met:
|
||||
* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in
|
||||
* this position and unchanged.
|
||||
* 2. 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.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
||||
*/
|
||||
|
||||
#include <ctype.h>
|
||||
#include <errno.h>
|
||||
#include <stdbool.h>
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <assert.h>
|
||||
#include <fcntl.h>
|
||||
#include <inttypes.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/types.h>
|
||||
#include <unistd.h>
|
||||
#include <stdint.h>
|
||||
#include <openssl/hmac.h>
|
||||
|
||||
#include "rpmb.h"
|
||||
#include "rpmb_sim.h"
|
||||
|
||||
static FILE *rpmb_fd = NULL;
|
||||
|
||||
/*
|
||||
* 0~6 is magic
|
||||
* 7~38 is rpmb key
|
||||
* 39~41 is write counter
|
||||
*/
|
||||
#define KEY_MAGIC "key_sim"
|
||||
#define KEY_MAGIC_ADDR 0
|
||||
#define KEY_MAGIC_LENGTH 7
|
||||
|
||||
#define KEY_ADDR 7
|
||||
#define KEY_LENGTH 32
|
||||
|
||||
#define WRITER_COUNTER_ADDR 39
|
||||
|
||||
#define TEEDATA_SIZE (4*1024*1024) //4M
|
||||
#define TEEDATA_BLOCK_COUNT (TEEDATA_SIZE/256)
|
||||
|
||||
#define offsetof(s, m) (size_t) &(((s *) 0)->m)
|
||||
|
||||
static int virtio_rpmb_debug = 1;
|
||||
#define DPRINTF(params) do { if (virtio_rpmb_debug) printf params; } while (0)
|
||||
#define WPRINTF(params) (printf params)
|
||||
|
||||
int rpmb_mac(const uint8_t *key, const struct rpmb_frame *frames,
|
||||
size_t frame_cnt, uint8_t *mac)
|
||||
{
|
||||
int i;
|
||||
int hmac_ret;
|
||||
unsigned int md_len;
|
||||
struct hmac_ctx_st hmac_ctx;
|
||||
|
||||
HMAC_CTX_init(&hmac_ctx);
|
||||
hmac_ret = HMAC_Init_ex(&hmac_ctx, key, 32, EVP_sha256(), NULL);
|
||||
if (!hmac_ret) {
|
||||
DPRINTF(("HMAC_Init_ex failed\n"));
|
||||
goto err;
|
||||
}
|
||||
|
||||
for (i = 0; i < frame_cnt; i++) {
|
||||
hmac_ret = HMAC_Update(&hmac_ctx, frames[i].data, 284);
|
||||
if (!hmac_ret) {
|
||||
DPRINTF(("HMAC_Update failed\n"));
|
||||
goto err;
|
||||
}
|
||||
}
|
||||
|
||||
hmac_ret = HMAC_Final(&hmac_ctx, mac, &md_len);
|
||||
if (md_len != 32) {
|
||||
DPRINTF(("bad md_len %d != 32.\n", md_len));
|
||||
goto err;
|
||||
}
|
||||
|
||||
if (!hmac_ret) {
|
||||
DPRINTF(("HMAC_Final failed\n"));
|
||||
goto err;
|
||||
}
|
||||
|
||||
err:
|
||||
HMAC_CTX_cleanup(&hmac_ctx);
|
||||
|
||||
return hmac_ret ? 0 : -1;
|
||||
}
|
||||
|
||||
static void rpmb_sim_close(void)
|
||||
{
|
||||
fclose(rpmb_fd);
|
||||
rpmb_fd = NULL;
|
||||
}
|
||||
|
||||
static int file_write(FILE *fp, const void *buf, size_t size, off_t offset)
|
||||
{
|
||||
size_t rc = 0;
|
||||
|
||||
if (fseek(fp, offset, SEEK_SET)) {
|
||||
DPRINTF(("%s:Seek to %ld failed.\n", __func__, offset));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = fwrite(buf, sizeof(char), size, fp);
|
||||
if (rc != size) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (fflush(fp) < 0) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
return rc;
|
||||
}
|
||||
|
||||
static int file_read(FILE *fp, void *buf, size_t size, off_t offset)
|
||||
{
|
||||
size_t rc = 0;
|
||||
|
||||
if (fseek(fp, offset, SEEK_SET)) {
|
||||
DPRINTF(("%s:Seek to %ld failed.\n", __func__, offset));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = fread(buf, sizeof(char), size, fp);
|
||||
if (rc == size) {
|
||||
return rc;
|
||||
} else {
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
static int rpmb_sim_open(const char *rpmb_devname)
|
||||
{
|
||||
uint8_t data = 0;
|
||||
rpmb_fd = fopen(rpmb_devname, "rb+");
|
||||
|
||||
if (rpmb_fd == NULL) {
|
||||
/*if the rpmb device file does not exist, create a new file*/
|
||||
rpmb_fd = fopen(rpmb_devname, "wb+");
|
||||
DPRINTF(("rpmb device file(%s) does not exist, create a new file\n", rpmb_devname));
|
||||
/* Write 0 to the last byte to enable 4MB length access */
|
||||
if (file_write(rpmb_fd, &data, 1, TEEDATA_SIZE - 1) < 0) {
|
||||
DPRINTF(("Failed to initialize simulated rpmb to 0.\n"));
|
||||
rpmb_fd = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
if (rpmb_fd == NULL) {
|
||||
DPRINTF(("%s: unable (%d) to open rpmb device '%s': %s\n",
|
||||
__func__, errno, rpmb_devname, strerror(errno)));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int get_counter(uint32_t *counter)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
rc = file_read(rpmb_fd, counter, sizeof(*counter), WRITER_COUNTER_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s failed.\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
swap32(*counter);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int set_counter(const uint32_t *counter)
|
||||
{
|
||||
int rc = 0;
|
||||
uint32_t cnt = *counter;
|
||||
|
||||
swap32(cnt);
|
||||
rc = file_write(rpmb_fd, &cnt, sizeof(cnt), WRITER_COUNTER_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s failed.\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int is_key_programmed(void)
|
||||
{
|
||||
int rc = 0;
|
||||
uint8_t magic[KEY_MAGIC_LENGTH] = {0};
|
||||
|
||||
rc = file_read(rpmb_fd, magic, KEY_MAGIC_LENGTH, KEY_MAGIC_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s read magic failed.\n", __func__));
|
||||
return 0;
|
||||
}
|
||||
|
||||
if (memcmp(KEY_MAGIC, magic, KEY_MAGIC_LENGTH))
|
||||
return 0;
|
||||
|
||||
return 1;
|
||||
}
|
||||
|
||||
static int get_key(uint8_t *key)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
rc = file_read(rpmb_fd, key, 32, KEY_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s failed.\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int program_key(const uint8_t *key)
|
||||
{
|
||||
int rc = 0;
|
||||
|
||||
rc = file_write(rpmb_fd, key, 32, KEY_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s failed at set key.\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
rc = file_write(rpmb_fd, KEY_MAGIC, KEY_MAGIC_LENGTH, KEY_MAGIC_ADDR);
|
||||
if (rc < 0)
|
||||
{
|
||||
DPRINTF(("%s failed at set magic.\n", __func__));
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int rpmb_sim_program_key(const struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int ret = 0;
|
||||
int err = RPMB_RES_WRITE_FAILURE;
|
||||
uint32_t counter = 0;
|
||||
|
||||
if (in_cnt == 0 || in_frame == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
if (is_key_programmed())
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
else
|
||||
ret = program_key(in_frame->key_mac);
|
||||
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
ret = set_counter(&counter);
|
||||
if (ret)
|
||||
goto out;
|
||||
|
||||
err = RPMB_RES_OK;
|
||||
|
||||
out:
|
||||
if (out_frame) {
|
||||
memset(out_frame, 0, out_cnt*sizeof(*out_frame));
|
||||
out_frame->req_resp = swap16(RPMB_RESP_PROGRAM_KEY);
|
||||
out_frame->result = swap16(err);
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rpmb_sim_write(const struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int ret = 0;
|
||||
int err = RPMB_RES_WRITE_FAILURE;
|
||||
uint32_t i;
|
||||
uint8_t key[32];
|
||||
uint8_t mac[32];
|
||||
uint32_t counter;
|
||||
uint16_t addr;
|
||||
uint16_t block_count;
|
||||
uint8_t data[256*in_cnt];
|
||||
|
||||
if (in_cnt == 0 || in_frame == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
if (in_frame[0].req_resp != swap16(RPMB_REQ_DATA_WRITE))
|
||||
return -EINVAL;
|
||||
|
||||
if (in_cnt > 2) {
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
addr = swap16(in_frame[0].addr);
|
||||
block_count = swap16(in_frame[0].block_count);
|
||||
|
||||
if (addr >= TEEDATA_BLOCK_COUNT) {
|
||||
err = RPMB_RES_ADDR_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (addr + block_count > TEEDATA_BLOCK_COUNT)
|
||||
goto out;
|
||||
|
||||
if (block_count == 0 || block_count > in_cnt) {
|
||||
ret = -EINVAL;
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
err = RPMB_RES_NO_AUTH_KEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (get_counter(&counter))
|
||||
goto out;
|
||||
|
||||
if (counter == 0xFFFFFFFF) {
|
||||
err = RPMB_RES_WRITE_COUNTER_EXPIRED;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (counter != swap32(in_frame[0].write_counter)) {
|
||||
err = RPMB_RES_COUNT_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (get_key(key)) {
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (rpmb_mac(key, in_frame, in_cnt, mac)) {
|
||||
err = RPMB_RES_GENERAL_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (memcmp(in_frame[in_cnt - 1].key_mac, mac, 32)) {
|
||||
DPRINTF(("%s wrong mac.\n", __func__));
|
||||
err = RPMB_RES_AUTH_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
for (i = 0; i < in_cnt; i++)
|
||||
memcpy(data + i * 256, in_frame[i].data, 256);
|
||||
|
||||
if (file_write(rpmb_fd, data, sizeof(data), 256 * addr) < 0) {
|
||||
DPRINTF(("%s write_with_retry failed.\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
|
||||
++counter;
|
||||
if (set_counter(&counter)) {
|
||||
DPRINTF(("%s set_counter failed.\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = RPMB_RES_OK;
|
||||
|
||||
out:
|
||||
if (out_frame) {
|
||||
memset(out_frame, 0, out_cnt*sizeof(*out_frame));
|
||||
out_frame->req_resp = swap16(RPMB_RESP_DATA_WRITE);
|
||||
out_frame->result = swap16(err);
|
||||
if (err == RPMB_RES_OK) {
|
||||
out_frame->addr = swap16(addr);
|
||||
out_frame->write_counter = swap32(counter);
|
||||
rpmb_mac(key, out_frame, 1, out_frame->key_mac);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rpmb_sim_read(const struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int ret = 0;
|
||||
uint32_t i;
|
||||
int err = RPMB_RES_READ_FAILURE;
|
||||
uint8_t key[32];
|
||||
uint8_t mac[32];
|
||||
uint16_t addr;
|
||||
uint8_t data[256*out_cnt];
|
||||
|
||||
if (in_cnt != 1 || in_frame == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
if (in_frame->req_resp != swap16(RPMB_REQ_DATA_READ))
|
||||
return -EINVAL;
|
||||
|
||||
addr = swap16(in_frame->addr);
|
||||
|
||||
if (addr >= TEEDATA_BLOCK_COUNT) {
|
||||
err = RPMB_RES_ADDR_FAILURE;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (addr + out_cnt > TEEDATA_BLOCK_COUNT)
|
||||
goto out;
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
err = RPMB_RES_NO_AUTH_KEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (file_read(rpmb_fd, data, sizeof(data), 256 * addr) < 0) {
|
||||
DPRINTF(("%s read_with_retry failed.\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
|
||||
err = RPMB_RES_OK;
|
||||
|
||||
out:
|
||||
if (out_frame) {
|
||||
memset(out_frame, 0, out_cnt*sizeof(*out_frame));
|
||||
for (i = 0; i < out_cnt; i++) {
|
||||
memcpy(out_frame[i].nonce, in_frame[0].nonce, sizeof(in_frame[0].nonce));
|
||||
out_frame[i].req_resp = swap16(RPMB_RESP_DATA_READ);
|
||||
out_frame[i].block_count = swap16(out_cnt);
|
||||
out_frame[i].addr = in_frame[0].addr;
|
||||
memcpy(out_frame[i].data, data+256*i, 256);
|
||||
}
|
||||
if (get_key(key))
|
||||
DPRINTF(("%s, get_key failed.\n", __func__));
|
||||
|
||||
out_frame[out_cnt - 1].result = swap16(err);
|
||||
rpmb_mac(key, out_frame, out_cnt, mac);
|
||||
memcpy(out_frame[out_cnt - 1].key_mac, mac, sizeof(mac));
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
static int rpmb_sim_get_counter(const struct rpmb_frame* in_frame, uint32_t in_cnt,
|
||||
struct rpmb_frame* out_frame, uint32_t out_cnt)
|
||||
{
|
||||
int ret = 0;
|
||||
int err = RPMB_RES_COUNT_FAILURE;
|
||||
uint8_t key[32];
|
||||
uint32_t counter;
|
||||
|
||||
if (in_cnt != 1 || in_frame == NULL)
|
||||
return -EINVAL;
|
||||
|
||||
if (in_frame->req_resp != swap16(RPMB_REQ_GET_COUNTER))
|
||||
return -EINVAL;
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
err = RPMB_RES_NO_AUTH_KEY;
|
||||
goto out;
|
||||
}
|
||||
|
||||
if (get_key(key))
|
||||
goto out;
|
||||
|
||||
if (get_counter(&counter))
|
||||
goto out;
|
||||
|
||||
err = RPMB_RES_OK;
|
||||
|
||||
out:
|
||||
if (out_frame) {
|
||||
memset(out_frame, 0, sizeof(*out_frame)*out_cnt);
|
||||
out_frame->result = swap16(err);
|
||||
out_frame->req_resp = swap16(RPMB_RESP_GET_COUNTER);
|
||||
memcpy(out_frame->nonce, in_frame[0].nonce, sizeof(in_frame[0].nonce));
|
||||
|
||||
if (err == RPMB_RES_OK) {
|
||||
out_frame->write_counter = swap32(counter);
|
||||
rpmb_mac(key, out_frame, out_cnt, out_frame->key_mac);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int is_use_sim_rpmb(void)
|
||||
{
|
||||
int ret;
|
||||
|
||||
ret = rpmb_sim_open(RPMB_SIM_PATH_NAME);
|
||||
if (ret) {
|
||||
DPRINTF(("%s: rpmb_sim_open failed\n", __func__));
|
||||
return 0;
|
||||
}
|
||||
|
||||
ret = is_key_programmed();
|
||||
|
||||
rpmb_sim_close();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int rpmb_sim_key_init(uint8_t *key)
|
||||
{
|
||||
int ret;
|
||||
uint32_t counter = 0;
|
||||
|
||||
ret = rpmb_sim_open(RPMB_SIM_PATH_NAME);
|
||||
if (ret) {
|
||||
DPRINTF(("%s: rpmb_sim_open failed\n", __func__));
|
||||
return ret;
|
||||
}
|
||||
|
||||
if (!is_key_programmed()) {
|
||||
ret = program_key(key);
|
||||
if (ret) {
|
||||
DPRINTF(("%s: program_key failed\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
ret = get_counter(&counter);
|
||||
if (ret) {
|
||||
counter = 0;
|
||||
ret = set_counter(&counter);
|
||||
if (ret) {
|
||||
DPRINTF(("%s: set_counter failed\n", __func__));
|
||||
goto out;
|
||||
}
|
||||
}
|
||||
|
||||
out:
|
||||
rpmb_sim_close();
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
/*
|
||||
* rel_write write read
|
||||
* RPMB_READ 0 1 1~N
|
||||
* RPMB_WRITE 1~N 1 1
|
||||
* GET_COUNTER 0 1 1
|
||||
* PROGRAM_KEY 1 1 1
|
||||
*/
|
||||
static int rpmb_sim_operations(const void *rel_write_data, size_t rel_write_size,
|
||||
const void *write_data, size_t write_size,
|
||||
void *read_buf, size_t read_size)
|
||||
{
|
||||
int ret = -1;
|
||||
|
||||
if (rel_write_size) {
|
||||
size_t nframe = rel_write_size/RPMB_FRAME_SIZE;
|
||||
struct rpmb_frame rel_write_frame[nframe];
|
||||
memcpy(rel_write_frame, rel_write_data, sizeof(rel_write_frame));
|
||||
if (rel_write_frame[0].req_resp == swap16(RPMB_REQ_DATA_WRITE)) {
|
||||
if (write_size/RPMB_FRAME_SIZE &&
|
||||
((struct rpmb_frame*)write_data)->req_resp == swap16(RPMB_REQ_RESULT_READ))
|
||||
ret = rpmb_sim_write(rel_write_frame, nframe, read_buf, read_size/RPMB_FRAME_SIZE);
|
||||
else
|
||||
ret = rpmb_sim_write(rel_write_frame, nframe, NULL, 0);
|
||||
}
|
||||
else if (rel_write_frame[0].req_resp == swap16(RPMB_REQ_PROGRAM_KEY)) {
|
||||
if (write_size/RPMB_FRAME_SIZE &&
|
||||
((struct rpmb_frame*)write_data)->req_resp == swap16(RPMB_REQ_RESULT_READ))
|
||||
ret = rpmb_sim_program_key(rel_write_frame, 1, read_buf, read_size/RPMB_FRAME_SIZE);
|
||||
else
|
||||
ret = rpmb_sim_program_key(rel_write_frame, 1, NULL, 0);
|
||||
}
|
||||
}
|
||||
else if (write_size) {
|
||||
struct rpmb_frame write_frame[write_size/RPMB_FRAME_SIZE];
|
||||
memcpy(write_frame, write_data, sizeof(write_frame));
|
||||
if (write_frame[0].req_resp == swap16(RPMB_REQ_DATA_READ)) {
|
||||
ret = rpmb_sim_read(write_frame, 1, read_buf, read_size/RPMB_FRAME_SIZE);
|
||||
}
|
||||
else if (write_frame[0].req_resp == swap16(RPMB_REQ_GET_COUNTER)) {
|
||||
ret = rpmb_sim_get_counter(write_frame, 1, read_buf, 1);
|
||||
}
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
int rpmb_sim_send(const void *r)
|
||||
{
|
||||
int ret;
|
||||
uint16_t i;
|
||||
uint32_t write_size = 0;
|
||||
uint32_t rel_write_size = 0;
|
||||
uint32_t read_size = 0;
|
||||
struct rpmb_frame *frame_write = NULL;
|
||||
struct rpmb_frame *frame_rel_write = NULL;
|
||||
struct rpmb_frame *frame_read = NULL;
|
||||
struct rpmb_ioc_cmd *ioc_cmd = NULL;
|
||||
const struct rpmb_ioc_seq_data *iseq = r;
|
||||
|
||||
for (i = 0; i < iseq->h.num_of_cmds; i++) {
|
||||
ioc_cmd = (struct rpmb_ioc_cmd *)(&iseq->cmd[i]);
|
||||
if (ioc_cmd->flags == 0) {
|
||||
frame_read = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
read_size = ioc_cmd->nframes * RPMB_FRAME_SIZE;
|
||||
} else if (ioc_cmd->flags == RPMB_F_WRITE) {
|
||||
frame_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
write_size = ioc_cmd->nframes * RPMB_FRAME_SIZE;
|
||||
} else if (ioc_cmd->flags == (RPMB_F_WRITE | RPMB_F_REL_WRITE)) {
|
||||
frame_rel_write = (struct rpmb_frame *)ioc_cmd->frames_ptr;
|
||||
rel_write_size = ioc_cmd->nframes * RPMB_FRAME_SIZE;
|
||||
} else {
|
||||
DPRINTF(("%s: rpmb_ioc_cmd is invalid in the rpmb_ioc_seq_data\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
}
|
||||
|
||||
ret = rpmb_sim_open(RPMB_SIM_PATH_NAME);
|
||||
if (ret) {
|
||||
DPRINTF(("%s: rpmb_sim_open failed\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
/* execute rpmb command */
|
||||
ret = rpmb_sim_operations(frame_rel_write, rel_write_size,
|
||||
frame_write, write_size,
|
||||
frame_read, read_size);
|
||||
rpmb_sim_close();
|
||||
|
||||
if (ret) {
|
||||
DPRINTF(("%s: rpmb_sim_operations failed\n", __func__));
|
||||
goto err_response;
|
||||
}
|
||||
|
||||
return 0;
|
||||
|
||||
err_response:
|
||||
return -1;
|
||||
}
|
||||
Reference in New Issue
Block a user