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