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/* common utility functions for cbfstool */
/* SPDX-License-Identifier: GPL-2.0-only */
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <libgen.h>
#include "common.h"
#include "cbfs.h"
/* Utilities */
int verbose = 0;
/* Small, OS/libc independent runtime check for endianness */
int is_big_endian(void)
{
static const uint32_t inttest = 0x12345678;
const uint8_t inttest_lsb = *(const uint8_t *)&inttest;
if (inttest_lsb == 0x12) {
return 1;
}
return 0;
}
static off_t get_file_size(FILE *f)
{
off_t fsize;
fseek(f, 0, SEEK_END);
fsize = ftell(f);
fseek(f, 0, SEEK_SET);
return fsize;
}
/* Buffer and file I/O */
int buffer_create(struct buffer *buffer, size_t size, const char *name)
{
buffer->name = strdup(name);
buffer->offset = 0;
buffer->size = size;
buffer->data = (char *)malloc(buffer->size);
if (!buffer->data) {
fprintf(stderr, "buffer_create: Insufficient memory (0x%zx).\n",
size);
}
return (buffer->data == NULL);
}
int buffer_from_file(struct buffer *buffer, const char *filename)
{
FILE *fp = fopen(filename, "rb");
if (!fp) {
perror(filename);
return -1;
}
buffer->offset = 0;
off_t file_size = get_file_size(fp);
if (file_size < 0) {
fprintf(stderr, "could not determine size of %s\n", filename);
fclose(fp);
return -1;
}
buffer->size = file_size;
buffer->name = strdup(filename);
buffer->data = (char *)malloc(buffer->size);
assert(buffer->data);
if (fread(buffer->data, 1, buffer->size, fp) != buffer->size) {
fprintf(stderr, "incomplete read: %s\n", filename);
fclose(fp);
buffer_delete(buffer);
return -1;
}
fclose(fp);
return 0;
}
int buffer_write_file(struct buffer *buffer, const char *filename)
{
FILE *fp = fopen(filename, "wb");
if (!fp) {
perror(filename);
return -1;
}
assert(buffer && buffer->data);
if (fwrite(buffer->data, 1, buffer->size, fp) != buffer->size) {
fprintf(stderr, "incomplete write: %s\n", filename);
fclose(fp);
return -1;
}
fclose(fp);
return 0;
}
void buffer_delete(struct buffer *buffer)
{
assert(buffer);
if (buffer->name) {
free(buffer->name);
buffer->name = NULL;
}
if (buffer->data) {
free(buffer_get_original_backing(buffer));
buffer->data = NULL;
}
buffer->offset = 0;
buffer->size = 0;
}
static struct {
uint32_t arch;
const char *name;
} arch_names[] = {
{ CBFS_ARCHITECTURE_AARCH64, "arm64" },
{ CBFS_ARCHITECTURE_ARM, "arm" },
{ CBFS_ARCHITECTURE_MIPS, "mips" },
{ CBFS_ARCHITECTURE_PPC64, "ppc64" },
/* power8 is a reasonable alias */
{ CBFS_ARCHITECTURE_PPC64, "power8" },
{ CBFS_ARCHITECTURE_RISCV, "riscv" },
{ CBFS_ARCHITECTURE_X86, "x86" },
{ CBFS_ARCHITECTURE_UNKNOWN, "unknown" }
};
uint32_t string_to_arch(const char *arch_string)
{
size_t i;
uint32_t ret = CBFS_ARCHITECTURE_UNKNOWN;
for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
if (!strcasecmp(arch_string, arch_names[i].name)) {
ret = arch_names[i].arch;
break;
}
}
return ret;
}
const char *arch_to_string(uint32_t a)
{
size_t i;
const char *ret = NULL;
for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
if (a == arch_names[i].arch) {
ret = arch_names[i].name;
break;
}
}
return ret;
}
void print_supported_architectures(void)
{
size_t i;
for (i = 0; i < ARRAY_SIZE(arch_names); i++) {
printf(i == 0? " ":", ");
printf("%s", arch_names[i].name);
}
printf("\n");
}
void print_supported_filetypes(void)
{
int i;
for (i=0; filetypes[i].name; i++) {
printf(" %s%c", filetypes[i].name, filetypes[i + 1].name ? ',' : '\n');
if ((i%8) == 7)
printf("\n");
}
}
uint64_t intfiletype(const char *name)
{
size_t i;
for (i = 0; filetypes[i].name; i++)
if (strcmp(filetypes[i].name, name) == 0)
return filetypes[i].type;
return -1;
}
char *bintohex(uint8_t *data, size_t len)
{
static const char translate[16] = "0123456789abcdef";
char *result = malloc(len * 2 + 1);
if (result == NULL)
return NULL;
result[len*2] = '\0';
unsigned int i;
for (i = 0; i < len; i++) {
result[i*2] = translate[(data[i] >> 4) & 0xf];
result[i*2+1] = translate[data[i] & 0xf];
}
return result;
}
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