5fff9558a4
Used by loader and veriexec Depends on libbearssl Reviewed by: emaste Sponsored by: Juniper Networks Differential Revision: D16335
62 lines
2.1 KiB
C
62 lines
2.1 KiB
C
/*-
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* Copyright (c) 2018, Juniper Networks, Inc.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <libsecureboot.h>
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#include <vse.h>
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/**
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* @brief
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* verify signed file
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*
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* We look for a signature using the extensions
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* recorded in signature_exts.
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* If we find a match we pass it to a suitable verify method.
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*
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* @return content of verified file or NULL on error.
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*/
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unsigned char *
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verify_signed(const char *filename, int flags)
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{
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struct stat st;
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char buf[MAXPATHLEN];
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const char **se;
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for (se = signature_exts; *se; se++) {
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snprintf(buf, sizeof(buf), "%s.%s", filename, *se);
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if (stat(buf, &st) < 0 || !S_ISREG(st.st_mode))
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continue;
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DEBUG_PRINTF(5, ("verify_signed: %s\n", buf));
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#ifdef VE_OPENPGP_SUPPORT
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if (strncmp(*se, "asc", 3) == 0)
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return (verify_asc(buf, flags));
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#endif
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return (verify_sig(buf, flags));
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}
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return (NULL);
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}
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