/*
 * This module implements the function for getting a CRC-32 computation
 * from loadagent.
 */

#include <sys/types.h>
#include <stdio.h>
#include <stdint.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>

extern char target_response_line[];

crc32_on_target(area_base, area_len, retptr)
	u_long area_base, area_len, *retptr;
{
	char arg1[10], arg2[10], *argv[4];
	int stat;
	char *strtoul_endp;

	sprintf(arg1, "%lx", area_base);
	sprintf(arg2, "%lx", area_len);
	argv[0] = "crc32";
	argv[1] = arg1;
	argv[2] = arg2;
	argv[3] = 0;
	tpinterf_make_cmd(argv);
	if (tpinterf_send_cmd() < 0)
		return(-1);
	stat = tpinterf_capture_output_oneline(10);	/* 10 s timeout */
	if (stat != 1) {
errout:		fprintf(stderr, "error: malformed response to crc32 command\n");
		return(-1);
	}
	if (strlen(target_response_line) != 8)
		goto errout;
	*retptr = strtoul(target_response_line, &strtoul_endp, 16);
	if (strtoul_endp != target_response_line + 8)
		goto errout;
	return(0);
}