| 1 |
2 |
drasko |
from aistruct import GFile, BitPoker, AIStruct
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import StringIO
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import sys
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class Elf32Header(AIStruct):
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EI_MAGIC = [0x7f, ord('E'), ord('L'), ord('F')]
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EI_CLASS_32 = 1
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EI_CLASS_64 = 2
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EI_DATA_LSB = 1
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| 10 |
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EI_DATA_MSB = 2
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EI_TYPE_NONE = 0
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EI_TYPE_REL = 1
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EI_TYPE_EXEC = 2
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EI_TYPE_DYN = 3
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EI_TYPE_CORE = 4
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| 16 |
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EI_TYPE_NUM = 5
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| 17 |
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EI_TYPE_LOPROC = 0xff00
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EI_TYPE_HIPROC = 0xffff
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MACHINE_NONE = 0
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MACHINE_SPARC = 2
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MACHINE_386 = 3
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MACHINE_MIPS = 8
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MACHINE_MIPS_RS4_BE = 10
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MACHINE_SPARC32PLUS = 18
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MACHINE_ARM = 40
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MACHINE_FAKE_ALPHA = 41
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MACHINE_SPARCV9 = 43
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MACHINE_IA_64 = 50
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MACHINE_ALPHA = 0x9026
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VERSION_NONE = 0
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VERSION_CURRENT = 1
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def __init__(self):
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| 34 |
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AIStruct.__init__(self, AIStruct.SIZE32)
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self.setup(
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('UINT8', 'ei_magic', {'times': 4}),
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('UINT8', 'ei_class', {'names' : { 1: "ELF32", 2: "ELF64" }} ),
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('UINT8', 'ei_data', {'names' : { 1 : "2's complement, little endian", 2: "2's complement, big endian" }}),
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('UINT8', 'ei_version', {'names' : { 1 : "1 (current)" }}),
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('UINT8', 'ei_osabi', { 'names' : { 0 : "UNIX - System V", 1 : "HP-UX Operating System", 255 : "Standalone application"}}),
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('UINT8', 'ei_abiversion'),
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('UINT8', 'ei_padding', {'times': 7}),
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('UINT16', 'e_type', { 'names' : { 2 : "EXEC (Executable file)" }} ),
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('UINT16', 'e_machine', { 'names' : { 3 : "Intel 80836" } }),
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('UINT32', 'e_version', {'format': "0x%x" }),
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('UINT32', 'e_entry', {'format': "0x%x" }),
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('UINT32', 'e_phoff', { 'format' : "%d (bytes into file)" }),
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('UINT32', 'e_shoff', { 'format' : "%d (bytes into file)" }),
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('UINT32', 'e_flags', {'format': "0x%x" }),
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('UINT16', 'e_ehsize', { 'format' : "%d (bytes)" } ),
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('UINT16', 'e_phentsize', { 'format' : "%d (bytes)" } ),
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('UINT16', 'e_phnum'),
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('UINT16', 'e_shentsize', { 'format' : "%d (bytes)" } ),
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('UINT16', 'e_shnum'),
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('UINT16', 'e_shstrndx')
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)
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def __str__(self):
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f = StringIO.StringIO()
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f.write("ELF Header:\n")
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for name, attr in [("Class", "ei_class"),
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("Data", "ei_data"),
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("Version", "ei_version"),
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("OS/ABI", "ei_osabi"),
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("ABI Version", "ei_abiversion"),
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("Type", "e_type"),
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("Machine", "e_machine"),
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("Version", "e_version"),
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("Entry point address", "e_entry"),
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("Start of program headers", "e_phoff"),
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("Start of section headers", "e_shoff"),
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("Flags", "e_flags"),
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("Size of this header", "e_ehsize"),
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("Size of program headers", "e_phentsize"),
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("Number of program headers", "e_phnum"),
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("Size of section headers", "e_shentsize"),
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("Number of section headers", "e_shnum"),
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("Section header string table index", "e_shstrndx"),
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]:
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f.write(" %-35s%s\n" % ("%s:" % name, getattr(self.ai, attr)))
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return f.getvalue()
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class Elf64Header(Elf32Header):
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# Inherit from Elf32Header to get the constants.
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def __init__(self):
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AIStruct.__init__(self, AIStruct.SIZE64)
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self.setup(
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('UINT8', 'ei_magic', {'times': 4}),
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('UINT8', 'ei_class'),
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('UINT8', 'ei_data'),
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('UINT8', 'ei_version'),
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('UINT8', 'ei_padding', {'times': 9}),
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('UINT16', 'e_type'),
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('UINT16', 'e_machine'),
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('UINT32', 'e_version'),
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('UINT64', 'e_entry'),
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('UINT64', 'e_phoff'),
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('UINT64', 'e_shoff'),
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('UINT32', 'e_flags'),
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('UINT16', 'e_ehsize'),
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('UINT16', 'e_phentsize'),
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('UINT16', 'e_phnum'),
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| 103 |
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('UINT16', 'e_shentsize'),
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('UINT16', 'e_shnum'),
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('UINT16', 'e_shstrndx')
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)
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class Elf32SectionHeader(AIStruct):
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SHF_WRITE = 1 << 0
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SHF_ALLOC = 1 << 1
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SHF_EXECINSTR = 1 << 2
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def __init__(self, *args, **kwargs):
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AIStruct.__init__(self, AIStruct.SIZE32)
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self.elffile = kwargs["elffile"]
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self.index = kwargs["index"]
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| 117 |
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| 118 |
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def format_flags(x):
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if x == (self.SHF_WRITE | self.SHF_ALLOC):
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return "WA"
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| 121 |
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if x == (self.SHF_EXECINSTR | self.SHF_ALLOC):
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| 122 |
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return "AX"
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| 123 |
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if x == self.SHF_WRITE:
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return "W"
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| 125 |
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if x == self.SHF_ALLOC:
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return "A"
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| 127 |
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if x == self.SHF_EXECINSTR:
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| 128 |
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return "X"
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| 129 |
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return "%x" % x
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| 130 |
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| 131 |
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self.mutated = 0
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| 132 |
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self._name = None
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| 133 |
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| 134 |
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self.setup(
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| 135 |
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('UINT32', 'sh_name', {"format" : self.elffile.get_name}),
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| 136 |
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('UINT32', 'sh_type', {"names" : {0:"NULL", 1:"PROGBITS", 2:"SYMTAB", 3:"STRTAB", 8:"NOBITS"}}),
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| 137 |
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('UINT32', 'sh_flags', {"format": format_flags}),
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| 138 |
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('UINT32', 'sh_addr', {"format" : "%08x"}),
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| 139 |
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('UINT32', 'sh_offset', {"format" : "%06x"}),
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| 140 |
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('UINT32', 'sh_size', {"format" : "%06x"}),
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| 141 |
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('UINT32', 'sh_link'),
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| 142 |
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('UINT32', 'sh_info', {"format" : "%3d"}),
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| 143 |
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('UINT32', 'sh_addralign', {"format" : "%2d"}),
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| 144 |
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('UINT32', 'sh_entsize', {"format" : "%02x"}),
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| 145 |
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)
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| 146 |
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| 147 |
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def get_name(self):
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| 148 |
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if not self._name:
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| 149 |
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self._name = self.elffile.get_name(self.ai.sh_name)
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| 150 |
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return self._name
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| 151 |
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| 152 |
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def set_name(self, value):
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| 153 |
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self._name = value
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name = property(get_name, set_name)
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| 155 |
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| 156 |
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def get_sym_name(self, value):
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| 157 |
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strtab = ElfFileStringTable \
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| 158 |
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(self.elffile.gfile, self.elffile.sheaders[self.ai.sh_link.get()])
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| 159 |
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return strtab.read(value)
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| 160 |
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| 161 |
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| 162 |
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def allocable(self):
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| 163 |
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return self.ai.sh_flags.get() & self.SHF_ALLOC
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| 164 |
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| 165 |
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def writable(self):
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| 166 |
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return self.ai.sh_flags.get() & self.SHF_WRITE
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| 167 |
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| 168 |
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def executable(self):
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| 169 |
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return self.ai.sh_flags.get() & self.SHF_EXECINSTR
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| 170 |
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| 171 |
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def get_perms(self):
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| 172 |
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# Only call on allocatable
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| 173 |
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assert self.allocable()
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| 174 |
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rwx = (1 << 2);
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| 175 |
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if self.writable():
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| 176 |
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rwx |= (1 << 1)
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| 177 |
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if self.executable():
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rwx |= 1
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| 179 |
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return rwx
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| 180 |
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| 181 |
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def container(self, cls):
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| 182 |
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size = cls(section = self).struct_size()
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| 183 |
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return ElfFileContainer(self.elffile.gfile, AIStruct.SIZE32, self.ai.sh_offset.get(),
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| 184 |
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size, self.ai.sh_size.get() / size,
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| 185 |
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cls, section=self)
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| 186 |
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| 187 |
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| 188 |
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class Elf64SectionHeader(AIStruct):
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| 189 |
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def __init__(self, *args, **kwargs):
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| 190 |
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AIStruct.__init__(self, AIStruct.SIZE64)
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| 191 |
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self.setup(
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| 192 |
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('UINT32', 'sh_name'),
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| 193 |
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('UINT32', 'sh_type'),
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| 194 |
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('UINT64', 'sh_flags'),
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| 195 |
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('UINT64', 'sh_addr'),
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| 196 |
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('UINT64', 'sh_offset'),
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| 197 |
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('UINT64', 'sh_size'),
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| 198 |
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('UINT32', 'sh_link'),
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| 199 |
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('UINT32', 'sh_info'),
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| 200 |
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('UINT64', 'sh_addralign'),
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| 201 |
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('UINT64', 'sh_entsize'),
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| 202 |
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)
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| 203 |
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| 204 |
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| 205 |
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class Elf32ProgramHeader(AIStruct):
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| 206 |
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PT_NULL = 0
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| 207 |
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PT_NULL = 0
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| 208 |
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PT_LOAD = 1
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| 209 |
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PT_DYNAMIC = 2
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| 210 |
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PT_INTERP = 3
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| 211 |
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PT_NOTE = 4
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| 212 |
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PT_SHLIB = 5
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| 213 |
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PT_PHDR = 6
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| 214 |
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PT_NUM = 7
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| 215 |
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PT_LOOS = 0x60000000
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| 216 |
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PT_HIOS = 0x6fffffff
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| 217 |
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PT_LOPROC = 0x70000000
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| 218 |
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PT_HIPROC = 0x7fffffff
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| 219 |
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| 220 |
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PF_X = 1 << 0
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| 221 |
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PF_W = 1 << 1
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| 222 |
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PF_R = 1 << 2
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| 223 |
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PF_MASKPROC = 0xf0000000L
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| 224 |
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| 225 |
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def __init__(self, *args, **kwargs):
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| 226 |
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AIStruct.__init__(self, AIStruct.SIZE32)
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| 227 |
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self.elffile = kwargs["elffile"]
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| 228 |
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def format_flags(x):
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| 229 |
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the_str = [' ', ' ', ' ']
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| 230 |
|
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if (x & self.PF_X):
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| 231 |
|
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the_str[2] = 'E'
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| 232 |
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if (x & self.PF_W):
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| 233 |
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the_str[1] = 'W'
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| 234 |
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if (x & self.PF_R):
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| 235 |
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the_str[0] = 'R'
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| 236 |
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return "".join(the_str)
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| 237 |
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| 238 |
|
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self.setup(
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| 239 |
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('UINT32', 'p_type', {"names" :
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| 240 |
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{0: "NULL",
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| 241 |
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1: "LOAD",
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| 242 |
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2 : "DYNAMIC",
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| 243 |
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3 : "INTERP",
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| 244 |
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4 : "NOTE",
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| 245 |
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1685382481 : "GNU_STACK",
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| 246 |
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1694766464 : "PAX_FLAGS",
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| 247 |
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}
|
| 248 |
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} ),
|
| 249 |
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('UINT32', 'p_offset', {"format": "0x%06x"}),
|
| 250 |
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('UINT32', 'p_vaddr', {"format": "0x%08x"}),
|
| 251 |
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('UINT32', 'p_paddr', {"format": "0x%08x"}),
|
| 252 |
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('UINT32', 'p_filesz', {"format": "0x%05x"}),
|
| 253 |
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('UINT32', 'p_memsz', {"format": "0x%05x"}),
|
| 254 |
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('UINT32', 'p_flags', {"format": format_flags}),
|
| 255 |
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('UINT32', 'p_align', {"format": "0x%x"}),
|
| 256 |
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)
|
| 257 |
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| 258 |
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class Elf64ProgramHeader(Elf32ProgramHeader):
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| 259 |
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def __init__(self, *args, **kwargs):
|
| 260 |
|
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AIStruct.__init__(self, AIStruct.SIZE64)
|
| 261 |
|
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self.setup(
|
| 262 |
|
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('UINT32', 'p_type', {"names" : {0: "NULL", 1: "LOAD", 2 : "DYNAMIC", 3 : "INTERP", 4 : "NOTE"}} ),
|
| 263 |
|
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('UINT32', 'p_flags'),
|
| 264 |
|
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('UINT64', 'p_offset'),
|
| 265 |
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('UINT64', 'p_vaddr'),
|
| 266 |
|
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('UINT64', 'p_paddr'),
|
| 267 |
|
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('UINT64', 'p_filesz'),
|
| 268 |
|
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('UINT64', 'p_memsz'),
|
| 269 |
|
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('UINT64', 'p_align'),
|
| 270 |
|
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)
|
| 271 |
|
|
|
| 272 |
|
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class ElfFileException(Exception):
|
| 273 |
|
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pass
|
| 274 |
|
|
|
| 275 |
|
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class ElfFileNotElfException(ElfFileException):
|
| 276 |
|
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pass
|
| 277 |
|
|
|
| 278 |
|
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class ElfFileContainer(object):
|
| 279 |
|
|
def __init__(self, gfile, word_size, offset, entsize, number, cls, **kwargs):
|
| 280 |
|
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self.gfile = gfile
|
| 281 |
|
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self.word_size = word_size
|
| 282 |
|
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self.offset = offset
|
| 283 |
|
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self.entsize = entsize
|
| 284 |
|
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self.number = number
|
| 285 |
|
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self.cls = cls
|
| 286 |
|
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self.mutated = 0
|
| 287 |
|
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self.container = []
|
| 288 |
|
|
self.kwargs = kwargs
|
| 289 |
|
|
|
| 290 |
|
|
def mutate(self):
|
| 291 |
|
|
print "Making it mutable"
|
| 292 |
|
|
for each in self:
|
| 293 |
|
|
self.container.append(each)
|
| 294 |
|
|
self.mutated = 1
|
| 295 |
|
|
|
| 296 |
|
|
def __delitem__(self, idx):
|
| 297 |
|
|
if not self.mutated: self.mutate()
|
| 298 |
|
|
self.container.__delitem__(idx)
|
| 299 |
|
|
|
| 300 |
|
|
def __getitem__(self, idx):
|
| 301 |
|
|
if type(idx) == type(""):
|
| 302 |
|
|
# Act like a dictionary
|
| 303 |
|
|
for each in self:
|
| 304 |
|
|
if str(each.ai.sh_name) == idx:
|
| 305 |
|
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return each
|
| 306 |
|
|
raise "badness"
|
| 307 |
|
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else:
|
| 308 |
|
|
if self.mutated:
|
| 309 |
|
|
print "mutated", idx, self.container
|
| 310 |
|
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return self.container[idx]
|
| 311 |
|
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else:
|
| 312 |
|
|
num = idx
|
| 313 |
|
|
assert num >= 0
|
| 314 |
|
|
if num >= self.number:
|
| 315 |
|
|
raise StopIteration()
|
| 316 |
|
|
inst = self.cls(self.word_size, index=num, **self.kwargs)
|
| 317 |
|
|
poker = BitPoker.new_with_gfile(self.gfile, self.offset + (self.entsize * num))
|
| 318 |
|
|
inst.read_from_poker(poker)
|
| 319 |
|
|
return inst
|
| 320 |
|
|
|
| 321 |
|
|
def __len__(self):
|
| 322 |
|
|
return self.number
|
| 323 |
|
|
|
| 324 |
|
|
class ElfFileProgramHeaderContainer(ElfFileContainer):
|
| 325 |
|
|
def __str__(self):
|
| 326 |
|
|
f = StringIO.StringIO()
|
| 327 |
|
|
f.write("Program Headers:\n")
|
| 328 |
|
|
format_str = " %-15s%-9s%-11s%-11s%-8s%-8s%-4s%s\n"
|
| 329 |
|
|
f.write(format_str % ("Type", "Offset", "VirtAddr",
|
| 330 |
|
|
"PhysAddr", "FileSiz", "MemSiz", "Flg", "Align"))
|
| 331 |
|
|
for header in self:
|
| 332 |
|
|
x = header.ai
|
| 333 |
|
|
f.write(format_str % (x.p_type, x.p_offset, x.p_vaddr,
|
| 334 |
|
|
x.p_paddr, x.p_filesz, x.p_memsz, x.p_flags, x.p_align))
|
| 335 |
|
|
return f.getvalue()
|
| 336 |
|
|
|
| 337 |
|
|
class ElfFileSectionHeaderContainer(ElfFileContainer):
|
| 338 |
|
|
def __str__(self):
|
| 339 |
|
|
f = StringIO.StringIO()
|
| 340 |
|
|
f.write("There are %d section headers, starting at offset 0x%x:\n\n" % (len(self), self.kwargs["elffile"].header.ai.e_shoff.get()))
|
| 341 |
|
|
f.write("Section Headers:\n")
|
| 342 |
|
|
format_str = " [%2s] %-17.17s %-15s %-8s %-6s %-6s %2s %3s %2s %-3s %-2s\n"
|
| 343 |
|
|
f.write(format_str % ("Nr", "Name", "Type", "Addr", "Off", "Size",
|
| 344 |
|
|
"ES", "Flg", "Lk", "Inf", "Al"))
|
| 345 |
|
|
for idx, header in enumerate(self):
|
| 346 |
|
|
x = header.ai
|
| 347 |
|
|
f.write(format_str % (idx, x.sh_name, x.sh_type, x.sh_addr,
|
| 348 |
|
|
x.sh_offset, x.sh_size, x.sh_entsize,
|
| 349 |
|
|
x.sh_flags, x.sh_link, x.sh_info,
|
| 350 |
|
|
x.sh_addralign))
|
| 351 |
|
|
return f.getvalue()
|
| 352 |
|
|
|
| 353 |
|
|
|
| 354 |
|
|
class ElfFileStringTable(object):
|
| 355 |
|
|
def __init__(self, gfile, section_header):
|
| 356 |
|
|
file_offset = section_header.ai.sh_offset
|
| 357 |
|
|
self.poker = BitPoker.new_with_gfile(gfile, file_offset)
|
| 358 |
|
|
|
| 359 |
|
|
def read(self, offset):
|
| 360 |
|
|
return self.poker.read_c_string(offset)
|
| 361 |
|
|
|
| 362 |
|
|
|
| 363 |
|
|
class Symbols(AIStruct):
|
| 364 |
|
|
def __init__(self, *args, **kwargs):
|
| 365 |
|
|
AIStruct.__init__(self, AIStruct.SIZE32)
|
| 366 |
|
|
self.section = kwargs["section"]
|
| 367 |
|
|
self.setup(
|
| 368 |
|
|
('UINT32', 'st_name', {"format" : self.section.get_sym_name}),
|
| 369 |
|
|
('UINT32', 'value'),
|
| 370 |
|
|
('UINT32', 'size'),
|
| 371 |
|
|
('UINT8', 'info'),
|
| 372 |
|
|
('UINT8', 'other'),
|
| 373 |
|
|
('UINT16', 'st_shndx')
|
| 374 |
|
|
)
|
| 375 |
|
|
|
| 376 |
|
|
def __str__(self):
|
| 377 |
|
|
return "[%s] 0x%08x %5d %3d" % \
|
| 378 |
|
|
(self.ai.st_name, self.ai.value.get(),
|
| 379 |
|
|
self.ai.size.get(), self.ai.st_shndx.get())
|
| 380 |
|
|
|
| 381 |
|
|
|
| 382 |
|
|
class ElfFileSymbolTable(object):
|
| 383 |
|
|
def __init__(self, gfile, section_header):
|
| 384 |
|
|
self.header = section_header
|
| 385 |
|
|
file_offset = section_header.ai.sh_offset
|
| 386 |
|
|
self.poker = BitPoker.new_with_gfile(gfile, file_offset)
|
| 387 |
|
|
|
| 388 |
|
|
def get_symbols(self, section_num = None):
|
| 389 |
|
|
if section_num:
|
| 390 |
|
|
return [ sym for sym in self.header.container(Symbols) if sym.ai.st_shndx.get() == section_num]
|
| 391 |
|
|
else:
|
| 392 |
|
|
return self.header.container(Symbols)
|
| 393 |
|
|
|
| 394 |
|
|
class ElfFile(object):
|
| 395 |
|
|
WORD_SIZE_MAP = {Elf32Header.EI_CLASS_32: Elf32Header.SIZE32,
|
| 396 |
|
|
Elf32Header.EI_CLASS_64: Elf32Header.SIZE64}
|
| 397 |
|
|
BYTE_ORDER_MAP = {Elf32Header.EI_DATA_LSB: 'lsb',
|
| 398 |
|
|
Elf32Header.EI_DATA_MSB: 'msb'}
|
| 399 |
|
|
HEADER_MAP = {Elf32Header.SIZE32: Elf32Header, Elf64Header.SIZE64: Elf64Header}
|
| 400 |
|
|
PROGRAM_HEADER_MAP = {Elf32Header.SIZE32: Elf32ProgramHeader, Elf64Header.SIZE64: Elf64ProgramHeader}
|
| 401 |
|
|
SECTION_HEADER_MAP = {Elf32Header.SIZE32: Elf32SectionHeader, Elf64Header.SIZE64: Elf64SectionHeader}
|
| 402 |
|
|
""" Python representation of an Elf file. """
|
| 403 |
|
|
def __init__(self, gfile, byte_ordering, word_size):
|
| 404 |
|
|
self.gfile = gfile
|
| 405 |
|
|
self.gfile.set_byte_ordering(byte_ordering)
|
| 406 |
|
|
self.byte_order = byte_ordering
|
| 407 |
|
|
self.word_size = word_size
|
| 408 |
|
|
|
| 409 |
|
|
self.header = ElfFile.HEADER_MAP[self.word_size]()
|
| 410 |
|
|
self.header.read_from_poker(BitPoker.new_with_gfile(self.gfile, 0))
|
| 411 |
|
|
# Setup the parts of the file
|
| 412 |
|
|
# ... program headers
|
| 413 |
|
|
self.pheaders = ElfFileProgramHeaderContainer \
|
| 414 |
|
|
(gfile, word_size, self.header.ai.e_phoff, self.header.ai.e_phentsize,
|
| 415 |
|
|
self.header.ai.e_phnum.get(), ElfFile.PROGRAM_HEADER_MAP[word_size], elffile=self)
|
| 416 |
|
|
# ... section headers
|
| 417 |
|
|
self.sheaders = ElfFileSectionHeaderContainer \
|
| 418 |
|
|
(gfile, word_size, self.header.ai.e_shoff, self.header.ai.e_shentsize,
|
| 419 |
|
|
self.header.ai.e_shnum.get(), ElfFile.SECTION_HEADER_MAP[word_size], elffile=self)
|
| 420 |
|
|
# ... string table
|
| 421 |
|
|
if self.header.ai.e_shstrndx != 0:
|
| 422 |
|
|
self.string_table = ElfFileStringTable \
|
| 423 |
|
|
(self.gfile, self.sheaders[self.header.ai.e_shstrndx])
|
| 424 |
|
|
|
| 425 |
|
|
# ... symbol table
|
| 426 |
|
|
self.symtable = None
|
| 427 |
|
|
for header in self.sheaders:
|
| 428 |
|
|
if header.get_name() == ".symtab":
|
| 429 |
|
|
self.symtable = ElfFileSymbolTable(self.gfile, header)
|
| 430 |
|
|
|
| 431 |
|
|
def set_source(self, poker):
|
| 432 |
|
|
self.source_poker = poker
|
| 433 |
|
|
|
| 434 |
|
|
def get_name(self, idx):
|
| 435 |
|
|
return self.string_table.read(idx)
|
| 436 |
|
|
|
| 437 |
|
|
def print_info(self):
|
| 438 |
|
|
print "* Information for ELF file:"
|
| 439 |
|
|
print "* Header info:"
|
| 440 |
|
|
self.header.print_info()
|
| 441 |
|
|
|
| 442 |
|
|
|
| 443 |
|
|
def write_file(selfm, filename):
|
| 444 |
|
|
# Write out head
|
| 445 |
|
|
print "Wirintg out", filename
|
| 446 |
|
|
|
| 447 |
|
|
def from_file(filename):
|
| 448 |
|
|
gfile = GFile.existing(filename)
|
| 449 |
|
|
poker = BitPoker()
|
| 450 |
|
|
poker.set_mmapfile(gfile.mapping, 0) # Offset of 0 from start of file.
|
| 451 |
|
|
poker.set_byte_ordering('lsb') # Use default because we don't (yet) know
|
| 452 |
|
|
header = Elf32Header() # Once again, use a default size.
|
| 453 |
|
|
header.read_from_poker(poker)
|
| 454 |
|
|
# Examine the header for info we need.
|
| 455 |
|
|
# Check the magic first. If we don't and the file is non-ELF, chances are
|
| 456 |
|
|
# class & data won't match which will result in a confusing error message
|
| 457 |
|
|
if header.ai.ei_magic != Elf32Header.EI_MAGIC:
|
| 458 |
|
|
raise ElfFileNotElfException("Wanted magic %r, got %r" \
|
| 459 |
|
|
% (Elf32Header.EI_MAGIC, header.ai.ei_magic))
|
| 460 |
|
|
word_size = ElfFile.WORD_SIZE_MAP[header.ai.ei_class.get()]
|
| 461 |
|
|
byte_order = ElfFile.BYTE_ORDER_MAP[header.ai.ei_data.get()]
|
| 462 |
|
|
return ElfFile(gfile, byte_order, word_size)
|
| 463 |
|
|
from_file = staticmethod(from_file)
|
| 464 |
|
|
|
| 465 |
|
|
|
| 466 |
|
|
def test():
|
| 467 |
|
|
"Test suite"
|
| 468 |
|
|
|
| 469 |
|
|
elf_file = ElfFile.from_file("a.out")
|
| 470 |
|
|
|
| 471 |
|
|
# Check can load an elf
|
| 472 |
|
|
success = 1
|
| 473 |
|
|
try:
|
| 474 |
|
|
x = ElfFile.from_file("a.out")
|
| 475 |
|
|
except:
|
| 476 |
|
|
success = 0
|
| 477 |
|
|
assert success
|
| 478 |
|
|
|
| 479 |
|
|
# CHeck can't load not and elf
|
| 480 |
|
|
success = 0
|
| 481 |
|
|
try:
|
| 482 |
|
|
x = ElfFile.from_file("pyelf.py")
|
| 483 |
|
|
except:
|
| 484 |
|
|
success = 1
|
| 485 |
|
|
|
| 486 |
|
|
assert success
|
| 487 |
|
|
|
| 488 |
|
|
|
| 489 |
|
|
def main():
|
| 490 |
|
|
filename = sys.argv[1] # Consider this a usage message :)
|
| 491 |
|
|
elf_file = ElfFile.from_file(filename)
|
| 492 |
|
|
elf_file.print_info()
|
| 493 |
|
|
|
| 494 |
|
|
if __name__ == '__main__':
|
| 495 |
|
|
if sys.argv[1] != "test":
|
| 496 |
|
|
main()
|
| 497 |
|
|
else:
|
| 498 |
|
|
test()
|
| 499 |
|
|
|
| 500 |
|
|
|
