#include <sys/cdefs.h>
#include <stand.h>
#include <sys/sha1.h>

#include <bootstrap.h>

void
sha1(void *data, size_t size, uint8_t *result)
{
        SHA1_CTX sha1_ctx;

        SHA1Init(&sha1_ctx);
        SHA1Update(&sha1_ctx, data, size);
        SHA1Final(result, &sha1_ctx);
}

static int
command_sha1(int argc, char **argv)
{
        void *ptr;
        size_t size, i;
        uint8_t resultbuf[SHA1_DIGEST_LENGTH];

        /*
         * usage: address size
         */
        if (argc != 3) {
                command_errmsg = "usage: address size";
                return (CMD_ERROR);
        }

        ptr = (void *)(uintptr_t)strtol(argv[1], NULL, 0);
        size = strtol(argv[2], NULL, 0);
        sha1(ptr, size, resultbuf);

        for (i = 0; i < SHA1_DIGEST_LENGTH; i++)
                printf("%02x", resultbuf[i]);
        printf("\n");
        return (CMD_OK);
}

COMMAND_SET(sha1, "sha1", "print the sha1 checksum", command_sha1);