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/* $OpenBSD: keynote-sigver.c,v 1.6 1999/10/09 06:59:37 angelos Exp $ */
/*
* The author of this code is Angelos D. Keromytis (angelos@dsl.cis.upenn.edu)
*
* This code was written by Angelos D. Keromytis in Philadelphia, PA, USA,
* in April-May 1998
*
* Copyright (C) 1998, 1999 by Angelos D. Keromytis.
*
* Permission to use, copy, and modify this software without fee
* is hereby granted, provided that this entire notice is included in
* all copies of any software which is or includes a copy or
* modification of this software.
*
* THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR
* IMPLIED WARRANTY. IN PARTICULAR, THE AUTHORS MAKES NO
* REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE
* MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR
* PURPOSE.
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif /* HAVE_CONFIG_H */
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <stdio.h>
#include <ctype.h>
#if STDC_HEADERS
#include <string.h>
#endif /* STDC_HEADERS */
#if HAVE_FCNTL_H
#include <fcntl.h>
#endif /* HAVE_FCNTL_H */
#if HAVE_IO_H
#include <io.h>
#elif HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_IO_H */
#include "header.h"
#include "keynote.h"
void
sigverusage(void)
{
fprintf(stderr, "Arguments:\n");
fprintf(stderr, "\t<AssertionFile>\n");
}
void
keynote_sigver(int argc, char *argv[])
{
struct stat sb;
int fd, i;
char *buf;
if (argc != 2)
{
sigverusage();
exit(0);
}
/* Open and read assertion file */
fd = open(argv[1], O_RDONLY, 0);
if (fd < 0)
{
perror(argv[1]);
exit(-1);
}
if (fstat(fd, &sb) < 0)
{
perror("fstat()");
exit(-1);
}
if (sb.st_size == 0) /* Paranoid */
{
fprintf(stderr, "Illegal assertion-file size 0\n");
exit(-1);
}
buf = (char *) calloc(sb.st_size + 1, sizeof(char));
if (buf == (char *) NULL)
{
perror("calloc()");
exit(-1);
}
if (read(fd, buf, sb.st_size) < 0)
{
perror("read()");
exit(-1);
}
close(fd);
i = kn_verify_assertion(buf, sb.st_size);
if (i == -1)
{
switch (keynote_errno)
{
case ERROR_MEMORY:
fprintf(stderr,
"Out of memory while parsing the assertion.\n");
break;
case ERROR_SYNTAX:
fprintf(stderr,
"Syntax error while parsing the assertion.\n");
break;
default:
fprintf(stderr,
"Unknown error while parsing the assertion.\n");
}
exit(-1);
}
free(buf);
if (i == SIGRESULT_TRUE)
fprintf(stdout, "Signature verified.\n");
else
{
if (keynote_errno != 0)
fprintf(stdout, "Signature could not be verified "
"(keynote_errno = %d).\n", keynote_errno);
else
fprintf(stdout, "Signature did not verify!\n");
}
exit(0);
}
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