corda/psw/urts/parser/parserfactory.cpp
Angie Chinchilla 9441de4c38 Initial release of Intel SGX for Linux.
This release is used in conjunction with the linux-sgx-driver Intial release:
https://github.com/01org/linux-sgx-driver
commit-id: 0e865ce5e6b297a787bcdc12d98bada8174be6d7

Intel-id: 33399

Signed-off-by: Angie Chinchilla <angie.v.chinchilla@intel.com>
2016-06-23 18:51:53 -04:00

77 lines
2.8 KiB
C++

/*
* Copyright (C) 2011-2016 Intel Corporation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Intel Corporation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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 <assert.h>
#include "parserfactory.h"
#include "util.h"
#include "elf32parser.h"
#include "elf64parser.h"
namespace {
bin_fmt_t check_elf_format(const uint8_t* start_addr, uint64_t len)
{
assert(start_addr != NULL);
const Elf32_Ehdr* ehdr = (const Elf32_Ehdr *) start_addr;
if (len < sizeof(Elf32_Ehdr))
return BF_UNKNOWN;
if (strncmp((const char *)ehdr->e_ident, ELFMAG, SELFMAG) != 0)
return BF_UNKNOWN;
switch (ehdr->e_ident[EI_CLASS])
{
case ELFCLASS32: return BF_ELF32;
case ELFCLASS64: return BF_ELF64;
default: return BF_UNKNOWN;
}
}
}
namespace binparser {
/* Note, the `start_addr' should NOT be NULL! */
BinParser* get_parser(const uint8_t* start_addr, uint64_t len)
{
assert(start_addr != NULL);
bin_fmt_t bf = BF_UNKNOWN;
bf = check_elf_format(start_addr, len);
if (bf == BF_ELF64) return new Elf64Parser(start_addr, len);
/* Doesn't matter whether it is an ELF32 shared library or not,
* here we just make sure that the factory method won't return
* NULL.
*/
return new Elf32Parser(start_addr, len);
}
}