from __future__ import annotations
from .plugin import SimStatePlugin
[docs]
class SimStateLibc(SimStatePlugin):
"""
This state plugin keeps track of various libc stuff:
"""
# __slots__ = [ 'heap_location', 'max_str_symbolic_bytes' ]
LOCALE_ARRAY = [
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x80
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x86
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x8c
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x92
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x98
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x9e
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xa4
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xaa
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xb0
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xb6
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xbc
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xc2
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xc8
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xce
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xd4
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xda
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xe0
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xe6
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xec
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xf2
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xf8
b"\000\000",
b"\000\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000", # 0xfe
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\003\040", # 0x04
b"\002\040",
b"\002\040",
b"\002\040",
b"\002\040",
b"\002\000",
b"\002\000", # 0x0a
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000", # 0x10
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000", # 0x16
b"\002\000",
b"\002\000",
b"\002\000",
b"\002\000",
b"\001\140",
b"\004\300", # 0x1c
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300", # 0x22
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300", # 0x28
b"\004\300",
b"\004\300",
b"\010\330",
b"\010\330",
b"\010\330",
b"\010\330", # 0x2e
b"\010\330",
b"\010\330",
b"\010\330",
b"\010\330",
b"\010\330",
b"\010\330", # 0x34
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300",
b"\004\300", # 0x3a
b"\004\300",
b"\010\325",
b"\010\325",
b"\010\325",
b"\010\325",
b"\010\325", # 0x40
b"\010\325",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305", # 0x46
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305", # 0x4c
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305",
b"\010\305", # 0x52
b"\010\305",
b"\010\305",
b"\010\305",
b"\004\300",
b"\004\300",
b"\004\300", # 0x58
b"\004\300",
b"\004\300",
b"\004\300",
b"\010\326",
b"\010\326",
b"\010\326", # 0x5e
b"\010\326",
b"\010\326",
b"\010\326",
b"\010\306",
b"\010\306",
b"\010\306", # 0x64
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306", # 0x6a
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306", # 0x70
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\010\306",
b"\004\300", # 0x76
b"\004\300",
b"\004\300",
b"\004\300",
b"\002\000",
b"\000\000",
b"\000\000", # 0x7c
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x82
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x88
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x8e
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x94
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0x9a
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xa0
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xa6
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xac
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xb2
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xb8
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xbe
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xc4
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xca
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xd0
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xd6
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xdc
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xe2
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xe8
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xee
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xf4
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000",
b"\000\000", # 0xfa
]
TOLOWER_LOC_ARRAY = [
0x80,
0x81,
0x82,
0x83,
0x84,
0x85,
0x86,
0x87, # 0x80
0x88,
0x89,
0x8A,
0x8B,
0x8C,
0x8D,
0x8E,
0x8F, # 0x88
0x90,
0x91,
0x92,
0x93,
0x94,
0x95,
0x96,
0x97, # 0x90
0x98,
0x99,
0x9A,
0x9B,
0x9C,
0x9D,
0x9E,
0x9F, # 0x98
0xA0,
0xA1,
0xA2,
0xA3,
0xA4,
0xA5,
0xA6,
0xA7, # 0xa0
0xA8,
0xA9,
0xAA,
0xAB,
0xAC,
0xAD,
0xAE,
0xAF, # 0xa8
0xB0,
0xB1,
0xB2,
0xB3,
0xB4,
0xB5,
0xB6,
0xB7, # 0xb0
0xB8,
0xB9,
0xBA,
0xBB,
0xBC,
0xBD,
0xBE,
0xBF, # 0xb8
0xC0,
0xC1,
0xC2,
0xC3,
0xC4,
0xC5,
0xC6,
0xC7, # 0xc0
0xC8,
0xC9,
0xCA,
0xCB,
0xCC,
0xCD,
0xCE,
0xCF, # 0xc8
0xD0,
0xD1,
0xD2,
0xD3,
0xD4,
0xD5,
0xD6,
0xD7, # 0xd0
0xD8,
0xD9,
0xDA,
0xDB,
0xDC,
0xDD,
0xDE,
0xDF, # 0xd8
0xE0,
0xE1,
0xE2,
0xE3,
0xE4,
0xE5,
0xE6,
0xE7, # 0xe0
0xE8,
0xE9,
0xEA,
0xEB,
0xEC,
0xED,
0xEE,
0xEF, # 0xe8
0xF0,
0xF1,
0xF2,
0xF3,
0xF4,
0xF5,
0xF6,
0xF7, # 0xf0
0xF8,
0xF9,
0xFA,
0xFB,
0xFC,
0xFD,
0xFE,
0xFFFFFFFF, # 0xf8
0x00,
0x01,
0x02,
0x03,
0x04,
0x05,
0x06,
0x07, # 0x00
0x08,
0x09,
0x0A,
0x0B,
0x0C,
0x0D,
0x0E,
0x0F, # 0x08
0x10,
0x11,
0x12,
0x13,
0x14,
0x15,
0x16,
0x17, # 0x10
0x18,
0x19,
0x1A,
0x1B,
0x1C,
0x1D,
0x1E,
0x1F, # 0x18
0x20,
0x21,
0x22,
0x23,
0x24,
0x25,
0x26,
0x27, # 0x20
0x28,
0x29,
0x2A,
0x2B,
0x2C,
0x2D,
0x2E,
0x2F, # 0x28
0x30,
0x31,
0x32,
0x33,
0x34,
0x35,
0x36,
0x37, # 0x30
0x38,
0x39,
0x3A,
0x3B,
0x3C,
0x3D,
0x3E,
0x3F, # 0x38
0x40,
0x61,
0x62,
0x63,
0x64,
0x65,
0x66,
0x67, # 0x40
0x68,
0x69,
0x6A,
0x6B,
0x6C,
0x6D,
0x6E,
0x6F, # 0x48
0x70,
0x71,
0x72,
0x73,
0x74,
0x75,
0x76,
0x77, # 0x50
0x78,
0x79,
0x7A,
0x5B,
0x5C,
0x5D,
0x5E,
0x5F, # 0x58
0x60,
0x61,
0x62,
0x63,
0x64,
0x65,
0x66,
0x67, # 0x60
0x68,
0x69,
0x6A,
0x6B,
0x6C,
0x6D,
0x6E,
0x6F, # 0x68
0x70,
0x71,
0x72,
0x73,
0x74,
0x75,
0x76,
0x77, # 0x70
0x78,
0x79,
0x7A,
0x7B,
0x7C,
0x7D,
0x7E,
0x7F, # 0x78
0x80,
0x81,
0x82,
0x83,
0x84,
0x85,
0x86,
0x87, # 0x80
0x88,
0x89,
0x8A,
0x8B,
0x8C,
0x8D,
0x8E,
0x8F, # 0x88
0x90,
0x91,
0x92,
0x93,
0x94,
0x95,
0x96,
0x97, # 0x90
0x98,
0x99,
0x9A,
0x9B,
0x9C,
0x9D,
0x9E,
0x9F, # 0x98
0xA0,
0xA1,
0xA2,
0xA3,
0xA4,
0xA5,
0xA6,
0xA7, # 0xa0
0xA8,
0xA9,
0xAA,
0xAB,
0xAC,
0xAD,
0xAE,
0xAF, # 0xa8
0xB0,
0xB1,
0xB2,
0xB3,
0xB4,
0xB5,
0xB6,
0xB7, # 0xb0
0xB8,
0xB9,
0xBA,
0xBB,
0xBC,
0xBD,
0xBE,
0xBF, # 0xb8
0xC0,
0xC1,
0xC2,
0xC3,
0xC4,
0xC5,
0xC6,
0xC7, # 0xc0
0xC8,
0xC9,
0xCA,
0xCB,
0xCC,
0xCD,
0xCE,
0xCF, # 0xc8
0xD0,
0xD1,
0xD2,
0xD3,
0xD4,
0xD5,
0xD6,
0xD7, # 0xd0
0xD8,
0xD9,
0xDA,
0xDB,
0xDC,
0xDD,
0xDE,
0xDF, # 0xd8
0xE0,
0xE1,
0xE2,
0xE3,
0xE4,
0xE5,
0xE6,
0xE7, # 0xe0
0xE8,
0xE9,
0xEA,
0xEB,
0xEC,
0xED,
0xEE,
0xEF, # 0xe8
0xF0,
0xF1,
0xF2,
0xF3,
0xF4,
0xF5,
0xF6,
0xF7, # 0xf0
0xF8,
0xF9,
0xFA,
0xFB,
0xFC,
0xFD,
0xFE,
0xFF, # 0xf8
]
TOUPPER_LOC_ARRAY = [
0x80,
0x81,
0x82,
0x83,
0x84,
0x85,
0x86,
0x87, # 0x80
0x88,
0x89,
0x8A,
0x8B,
0x8C,
0x8D,
0x8E,
0x8F, # 0x88
0x90,
0x91,
0x92,
0x93,
0x94,
0x95,
0x96,
0x97, # 0x90
0x98,
0x99,
0x9A,
0x9B,
0x9C,
0x9D,
0x9E,
0x9F, # 0x98
0xA0,
0xA1,
0xA2,
0xA3,
0xA4,
0xA5,
0xA6,
0xA7, # 0xa0
0xA8,
0xA9,
0xAA,
0xAB,
0xAC,
0xAD,
0xAE,
0xAF, # 0xa8
0xB0,
0xB1,
0xB2,
0xB3,
0xB4,
0xB5,
0xB6,
0xB7, # 0xb0
0xB8,
0xB9,
0xBA,
0xBB,
0xBC,
0xBD,
0xBE,
0xBF, # 0xb8
0xC0,
0xC1,
0xC2,
0xC3,
0xC4,
0xC5,
0xC6,
0xC7, # 0xc0
0xC8,
0xC9,
0xCA,
0xCB,
0xCC,
0xCD,
0xCE,
0xCF, # 0xc8
0xD0,
0xD1,
0xD2,
0xD3,
0xD4,
0xD5,
0xD6,
0xD7, # 0xd0
0xD8,
0xD9,
0xDA,
0xDB,
0xDC,
0xDD,
0xDE,
0xDF, # 0xd8
0xE0,
0xE1,
0xE2,
0xE3,
0xE4,
0xE5,
0xE6,
0xE7, # 0xe0
0xE8,
0xE9,
0xEA,
0xEB,
0xEC,
0xED,
0xEE,
0xEF, # 0xe8
0xF0,
0xF1,
0xF2,
0xF3,
0xF4,
0xF5,
0xF6,
0xF7, # 0xf0
0xF8,
0xF9,
0xFA,
0xFB,
0xFC,
0xFD,
0xFE,
0xFFFFFFFF, # 0xf8
0x00,
0x01,
0x02,
0x03,
0x04,
0x05,
0x06,
0x07, # 0x00
0x08,
0x09,
0x0A,
0x0B,
0x0C,
0x0D,
0x0E,
0x0F, # 0x08
0x10,
0x11,
0x12,
0x13,
0x14,
0x15,
0x16,
0x17, # 0x10
0x18,
0x19,
0x1A,
0x1B,
0x1C,
0x1D,
0x1E,
0x1F, # 0x18
0x20,
0x21,
0x22,
0x23,
0x24,
0x25,
0x26,
0x27, # 0x20
0x28,
0x29,
0x2A,
0x2B,
0x2C,
0x2D,
0x2E,
0x2F, # 0x28
0x30,
0x31,
0x32,
0x33,
0x34,
0x35,
0x36,
0x37, # 0x30
0x38,
0x39,
0x3A,
0x3B,
0x3C,
0x3D,
0x3E,
0x3F, # 0x38
0x40,
0x41,
0x42,
0x43,
0x44,
0x45,
0x46,
0x47, # 0x40
0x48,
0x49,
0x4A,
0x4B,
0x4C,
0x4D,
0x4E,
0x4F, # 0x48
0x50,
0x51,
0x52,
0x53,
0x54,
0x55,
0x56,
0x57, # 0x50
0x58,
0x59,
0x5A,
0x5B,
0x5C,
0x5D,
0x5E,
0x5F, # 0x58
0x60,
0x41,
0x42,
0x43,
0x44,
0x45,
0x46,
0x47, # 0x60
0x48,
0x49,
0x4A,
0x4B,
0x4C,
0x4D,
0x4E,
0x4F, # 0x68
0x50,
0x51,
0x52,
0x53,
0x54,
0x55,
0x56,
0x57, # 0x70
0x58,
0x59,
0x5A,
0x7B,
0x7C,
0x7D,
0x7E,
0x7F, # 0x78
0x80,
0x81,
0x82,
0x83,
0x84,
0x85,
0x86,
0x87, # 0x80
0x88,
0x89,
0x8A,
0x8B,
0x8C,
0x8D,
0x8E,
0x8F, # 0x88
0x90,
0x91,
0x92,
0x93,
0x94,
0x95,
0x96,
0x97, # 0x90
0x98,
0x99,
0x9A,
0x9B,
0x9C,
0x9D,
0x9E,
0x9F, # 0x98
0xA0,
0xA1,
0xA2,
0xA3,
0xA4,
0xA5,
0xA6,
0xA7, # 0xa0
0xA8,
0xA9,
0xAA,
0xAB,
0xAC,
0xAD,
0xAE,
0xAF, # 0xa8
0xB0,
0xB1,
0xB2,
0xB3,
0xB4,
0xB5,
0xB6,
0xB7, # 0xb0
0xB8,
0xB9,
0xBA,
0xBB,
0xBC,
0xBD,
0xBE,
0xBF, # 0xb8
0xC0,
0xC1,
0xC2,
0xC3,
0xC4,
0xC5,
0xC6,
0xC7, # 0xc0
0xC8,
0xC9,
0xCA,
0xCB,
0xCC,
0xCD,
0xCE,
0xCF, # 0xc8
0xD0,
0xD1,
0xD2,
0xD3,
0xD4,
0xD5,
0xD6,
0xD7, # 0xd0
0xD8,
0xD9,
0xDA,
0xDB,
0xDC,
0xDD,
0xDE,
0xDF, # 0xd8
0xE0,
0xE1,
0xE2,
0xE3,
0xE4,
0xE5,
0xE6,
0xE7, # 0xe0
0xE8,
0xE9,
0xEA,
0xEB,
0xEC,
0xED,
0xEE,
0xEF, # 0xe8
0xF0,
0xF1,
0xF2,
0xF3,
0xF4,
0xF5,
0xF6,
0xF7, # 0xf0
0xF8,
0xF9,
0xFA,
0xFB,
0xFC,
0xFD,
0xFE,
0xFF, # 0xf8
]
[docs]
def __init__(self):
SimStatePlugin.__init__(self)
# various thresholds
self.buf_symbolic_bytes = 60
self.max_symbolic_strstr = 1
self.max_symbolic_strchr = 16
self.max_variable_size = 128
self.max_str_len = 128
self.max_buffer_size = 48
self.max_strtol_len = 11 # len(str(2**31)) + 1
self.max_memcpy_size = 4096
self.max_packet_size = 256
self.max_gets_size = 256
# strtok
self.strtok_heap = []
self.simple_strtok = True
self.strtok_token_size = 1024
# helpful stuff
self.strdup_stack = []
# as per Audrey:
# the idea is that there's two abi versions, and for one of them, the
# address passed to libc_start_main isn't actually the address of the
# function, but the address of a pointer to a struct containing the
# actual function address and the table of contents address
self.ppc64_abiv = None
# It will be initialized in __libc_start_main SimProcedure
self.ctype_b_loc_table_ptr = None
self.ctype_tolower_loc_table_ptr = None
self.ctype_toupper_loc_table_ptr = None
self.errno_location = None
@SimStatePlugin.memo
def copy(self, memo): # pylint: disable=unused-argument
o = super().copy(memo)
o.buf_symbolic_bytes = self.buf_symbolic_bytes
o.max_symbolic_strstr = self.max_symbolic_strstr
o.max_symbolic_strchr = self.max_symbolic_strchr
o.max_variable_size = self.max_variable_size
o.max_str_len = self.max_str_len
o.max_buffer_size = self.max_buffer_size
o.max_strtol_len = self.max_strtol_len
o.max_memcpy_size = self.max_memcpy_size
o.max_packet_size = self.max_packet_size
o.max_gets_size = self.max_gets_size
o.strtok_heap = self.strtok_heap[:]
o.simple_strtok = self.simple_strtok
o.strtok_token_size = self.strtok_token_size
o.strdup_stack = self.strdup_stack[:]
o.ppc64_abiv = self.ppc64_abiv
o.ctype_b_loc_table_ptr = self.ctype_b_loc_table_ptr
o.ctype_tolower_loc_table_ptr = self.ctype_tolower_loc_table_ptr
o.ctype_toupper_loc_table_ptr = self.ctype_toupper_loc_table_ptr
o.errno_location = self.errno_location
return o
[docs]
def merge(self, others, merge_conditions, common_ancestor=None): # pylint: disable=unused-argument
return False
[docs]
def widen(self, others):
return False
@property
def errno(self):
return self.state.mem[self.errno_location].int.resolved
@errno.setter
def errno(self, val):
self.state.mem[self.errno_location].int = val
[docs]
def ret_errno(self, val):
try:
ival = getattr(self.state.posix, val)
except AttributeError as e:
raise ValueError(f"Invalid errno constant {val}") from e
if self.state.scratch.sim_procedure.is_syscall:
return -ival
self.errno = ival
return -1
from angr.sim_state import SimState
SimState.register_default("libc", SimStateLibc)