This file is indexed.

/usr/lib/python2.7/dist-packages/dpkt/rpc.py is in python-dpkt 1.8.r98-0.1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
# $Id: rpc.py 23 2006-11-08 15:45:33Z dugsong $

"""Remote Procedure Call."""

import struct
import dpkt

# RPC.dir
CALL = 0
REPLY = 1

# RPC.Auth.flavor
AUTH_NONE = AUTH_NULL = 0
AUTH_UNIX = 1
AUTH_SHORT = 2
AUTH_DES = 3

# RPC.Reply.stat
MSG_ACCEPTED = 0
MSG_DENIED = 1

# RPC.Reply.Accept.stat
SUCCESS = 0
PROG_UNAVAIL = 1
PROG_MISMATCH = 2
PROC_UNAVAIL = 3
GARBAGE_ARGS = 4
SYSTEM_ERR = 5

# RPC.Reply.Reject.stat
RPC_MISMATCH = 0
AUTH_ERROR = 1

class RPC(dpkt.Packet):
    __hdr__ = (
        ('xid', 'I', 0),
        ('dir', 'I', CALL)
        )
    class Auth(dpkt.Packet):
        __hdr__ = (('flavor', 'I', AUTH_NONE), )
        def unpack(self, buf):
            dpkt.Packet.unpack(self, buf)
            n = struct.unpack('>I', self.data[:4])[0]
            self.data = self.data[4:4+n]
        def __len__(self):
            return 8 + len(self.data)
        def __str__(self):
            return self.pack_hdr() + struct.pack('>I', len(self.data)) + \
                   str(self.data)
    
    class Call(dpkt.Packet):
        __hdr__ = (
            ('rpcvers', 'I', 2),
            ('prog', 'I', 0),
            ('vers', 'I', 0),
            ('proc', 'I', 0)
            )
        def unpack(self, buf):
            dpkt.Packet.unpack(self, buf)
            self.cred = RPC.Auth(self.data)
            self.verf = RPC.Auth(self.data[len(self.cred):])
            self.data = self.data[len(self.cred) + len(self.verf):]
        def __len__(self):
            return len(str(self)) # XXX
        def __str__(self):
            return dpkt.Packet.__str__(self) + \
                   str(getattr(self, 'cred', RPC.Auth())) + \
                   str(getattr(self, 'verf', RPC.Auth())) + \
                   str(self.data)
    
    class Reply(dpkt.Packet):
        __hdr__ = (('stat', 'I', MSG_ACCEPTED), )

        class Accept(dpkt.Packet):
            __hdr__ = (('stat', 'I', SUCCESS), )
            def unpack(self, buf):
                self.verf = RPC.Auth(buf)
                buf = buf[len(self.verf):]
                self.stat = struct.unpack('>I', buf[:4])[0]
                if self.stat == SUCCESS:
                    self.data = buf[4:]
                elif self.stat == PROG_MISMATCH:
                    self.low, self.high = struct.unpack('>II', buf[4:12])
                    self.data = buf[12:]
            def __len__(self):
                if self.stat == PROG_MISMATCH: n = 8
                else: n = 0
                return len(self.verf) + 4 + n + len(self.data)
            def __str__(self):
                if self.stat == PROG_MISMATCH:
                    return str(self.verf) + struct.pack('>III', self.stat,
                        self.low, self.high) + self.data
                return str(self.verf) + dpkt.Packet.__str__(self)
        
        class Reject(dpkt.Packet):
            __hdr__ = (('stat', 'I', AUTH_ERROR), )
            def unpack(self, buf):
                dpkt.Packet.unpack(self, buf)
                if self.stat == RPC_MISMATCH:
                    self.low, self.high = struct.unpack('>II', self.data[:8])
                    self.data = self.data[8:]
                elif self.stat == AUTH_ERROR:
                    self.why = struct.unpack('>I', self.data[:4])[0]
                    self.data = self.data[4:]
            def __len__(self):
                if self.stat == RPC_MISMATCH: n = 8
                elif self.stat == AUTH_ERROR: n =4
                else: n = 0
                return 4 + n + len(self.data)
            def __str__(self):
                if self.stat == RPC_MISMATCH:
                    return struct.pack('>III', self.stat, self.low,
                                       self.high) + self.data
                elif self.stat == AUTH_ERROR:
                    return struct.pack('>II', self.stat, self.why) + self.data
                return dpkt.Packet.__str__(self)
        
        def unpack(self, buf):
            dpkt.Packet.unpack(self, buf)
            if self.stat == MSG_ACCEPTED:
                self.data = self.accept = self.Accept(self.data)
            elif self.status == MSG_DENIED:
                self.data = self.reject = self.Reject(self.data)
        
    def unpack(self, buf):
        dpkt.Packet.unpack(self, buf)
        if self.dir == CALL:
            self.data = self.call = self.Call(self.data)
        elif self.dir == REPLY:
            self.data = self.reply = self.Reply(self.data)

def unpack_xdrlist(cls, buf):
    l = []
    while buf:
        if buf.startswith('\x00\x00\x00\x01'):
            p = cls(buf[4:])
            l.append(p)
            buf = p.data
        elif buf.startswith('\x00\x00\x00\x00'):
            break
        else:
            raise dpkt.UnpackError, 'invalid XDR list'
    return l

def pack_xdrlist(*args):
    return '\x00\x00\x00\x01'.join(map(str, args)) + '\x00\x00\x00\x00'