| /* Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| /* Routines for verifying a file's signature. Useful in testing the core |
| * RSA verification implementation. |
| */ |
| |
| #include <inttypes.h> /* For PRIu64 macro */ |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <sys/types.h> |
| |
| #include "load_kernel_fw.h" |
| #include "boot_device.h" |
| #include "host_common.h" |
| #include "rollback_index.h" |
| #include "utility.h" |
| |
| /* ANSI Color coding sequences. */ |
| #define COL_GREEN "\e[1;32m" |
| #define COL_RED "\e[0;31m" |
| #define COL_STOP "\e[m" |
| |
| |
| #define LBA_BYTES 512 |
| #define KERNEL_BUFFER_SIZE 0x600000 |
| |
| /* Global variables for stub functions */ |
| static LoadKernelParams lkp; |
| static FILE *image_file = NULL; |
| |
| |
| /* Boot device stub implementations to read from the image file */ |
| int BootDeviceReadLBA(uint64_t lba_start, uint64_t lba_count, void *buffer) { |
| printf("Read(%" PRIu64 ", %" PRIu64 ")\n", lba_start, lba_count); |
| |
| if (lba_start > lkp.ending_lba || |
| lba_start + lba_count - 1 > lkp.ending_lba) { |
| fprintf(stderr, "Read overrun: %" PRIu64 " + %" PRIu64 " > %" PRIu64 "\n", |
| lba_start, lba_count, lkp.ending_lba); |
| return 1; |
| } |
| |
| fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET); |
| if (1 != fread(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) { |
| fprintf(stderr, "Read error."); |
| return 1; |
| } |
| return 0; |
| } |
| |
| |
| int BootDeviceWriteLBA(uint64_t lba_start, uint64_t lba_count, |
| const void *buffer) { |
| printf("Write(%" PRIu64 ", %" PRIu64 ")\n", lba_start, lba_count); |
| |
| if (lba_start > lkp.ending_lba || |
| lba_start + lba_count - 1 > lkp.ending_lba) { |
| fprintf(stderr, "Read overrun: %" PRIu64 " + %" PRIu64 " > %" PRIu64 "\n", |
| lba_start, lba_count, lkp.ending_lba); |
| return 1; |
| } |
| |
| /* TODO: enable writes, once we're sure it won't trash our example file */ |
| return 0; |
| |
| fseek(image_file, lba_start * lkp.bytes_per_lba, SEEK_SET); |
| if (1 != fwrite(buffer, lba_count * lkp.bytes_per_lba, 1, image_file)) { |
| fprintf(stderr, "Read error."); |
| return 1; |
| } |
| return 0; |
| } |
| |
| |
| /* Main routine */ |
| int main(int argc, char* argv[]) { |
| |
| const char* image_name; |
| const char* keyfile_name; |
| int rv; |
| |
| Memset(&lkp, 0, sizeof(LoadKernelParams)); |
| lkp.bytes_per_lba = LBA_BYTES; |
| |
| /* Read command line parameters */ |
| if (3 > argc) { |
| fprintf(stderr, "usage: %s <drive_image> <sign_key>\n", argv[0]); |
| return 1; |
| } |
| image_name = argv[1]; |
| keyfile_name = argv[2]; |
| |
| /* Read header signing key blob */ |
| { |
| uint64_t key_size; |
| lkp.header_sign_key_blob = ReadFile(keyfile_name, &key_size); |
| if (!lkp.header_sign_key_blob) |
| fprintf(stderr, "Unable to read key file %s\n", keyfile_name); |
| return 1; |
| } |
| |
| /* Get image size */ |
| printf("Reading from image: %s\n", image_name); |
| image_file = fopen(image_name, "rb"); |
| if (!image_file) { |
| fprintf(stderr, "Unable to open image file %s\n", image_name); |
| return 1; |
| } |
| fseek(image_file, 0, SEEK_END); |
| lkp.ending_lba = (ftell(image_file) / LBA_BYTES) - 1; |
| rewind(image_file); |
| printf("Ending LBA: %" PRIu64 "\n", lkp.ending_lba); |
| |
| /* Allocate a buffer for the kernel */ |
| lkp.kernel_buffer = Malloc(KERNEL_BUFFER_SIZE); |
| if(!lkp.kernel_buffer) { |
| fprintf(stderr, "Unable to allocate kernel buffer.\n"); |
| return 1; |
| } |
| |
| /* TODO: Option for boot mode */ |
| lkp.boot_flags = 0; |
| |
| /* Call LoadKernel() */ |
| rv = LoadKernel(&lkp); |
| printf("LoadKernel() returned %d\n", rv); |
| |
| if (LOAD_KERNEL_SUCCESS == rv) { |
| printf("Partition number: %" PRIu64 "\n", lkp.partition_number); |
| printf("Bootloader address: %" PRIu64 "\n", lkp.bootloader_address); |
| printf("Bootloader size: %" PRIu64 "\n", lkp.bootloader_size); |
| } |
| |
| fclose(image_file); |
| Free(lkp.kernel_buffer); |
| return 0; |
| } |