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/*-
* Copyright (c) 2018, Juniper Networks, Inc.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <libsecureboot.h>
#include <vse.h>
/**
* @brief
* verify signed file
*
* We look for a signature using the extensions
* recorded in signature_exts.
* If we find a match we pass it to a suitable verify method.
*
* @return content of verified file or NULL on error.
*/
unsigned char *
verify_signed(const char *filename, int flags)
{
struct stat st;
char buf[MAXPATHLEN];
const char **se;
for (se = signature_exts; *se; se++) {
snprintf(buf, sizeof(buf), "%s.%s", filename, *se);
if (stat(buf, &st) < 0 || !S_ISREG(st.st_mode))
continue;
DEBUG_PRINTF(5, ("verify_signed: %s\n", buf));
#ifdef VE_OPENPGP_SUPPORT
if (strncmp(*se, "asc", 3) == 0)
return (verify_asc(buf, flags));
#endif
return (verify_sig(buf, flags));
}
return (NULL);
}
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