/usr/share/pyshared/radare/remote.py is in radare-common 1:1.5.2-6.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 | #!/usr/bin/python
#
# Python implementation of the radare remote protocol
#
##===================================================0
## server api
##===================================================0
from socket import *
from struct import *
import traceback
import sys
RAP_OPEN   = 1
RAP_READ   = 2
RAP_WRITE  = 3
RAP_SEEK   = 4
RAP_CLOSE  = 5
RAP_SYSTEM = 6
RAP_CMD    = 7
RAP_REPLY  = 0x80
# TODO: Add udp
# TODO: allow to init funptrs with a tuple
class RapServer():
	def __init__(self):
		self.offset = 0
		self.size = 0
		self.handle_eof = None
		self.handle_cmd_system = None
		self.handle_cmd_seek   = None
		self.handle_cmd_read   = None
		self.handle_cmd_write  = None
		self.handle_cmd_open   = None
		self.handle_cmd_close  = None
	def _handle_packet(self, c, key):
		ret = ""
		if key == RAP_OPEN:
			buffer = c.recv(2)
			(flags, length) = unpack(">BB", buffer)
			file = c.recv(length)
			if self.handle_cmd_open != None:
				fd = self.handle_cmd_open(file, flags)
			else: 	fd = 3434
			buf = pack(">Bi", key|RAP_REPLY, fd)
			c.send(buf)
		elif key == RAP_READ:
			buffer = c.recv(4)
			(length,) = unpack(">I", buffer)
			if self.handle_cmd_read != None:
				ret = str(self.handle_cmd_read(length))
				try:
					lon = len(ret)
				except:
					ret = ""
					lon = 0
			else:
				ret = ""
				lon = 0;
			buf = pack(">Bi", key|RAP_REPLY, lon)
			c.send(buf+ret)
		elif key == RAP_WRITE:
			buffer = c.recv(4)
			(length,) = unpack(">I", buffer)
			buffer = c.recv(length)
			# TODO: get buffer and length
			if self.handle_cmd_write != None:
				length = self.handle_cmd_write (buffer)
			buf = pack(">Bi", key|RAP_REPLY, length)
			c.send(buf)
		elif key == RAP_SEEK:
			buffer = c.recv(9)
			(type, off) = unpack(">BQ", buffer)
			if self.handle_cmd_seek != None:
				seek = self.handle_cmd_seek(off, type)
			else:
				if   type == 0: # SET
					seek = off;
				elif type == 1: # CUR
					seek = seek + off 
				elif type == 2: # END
					seek = self.size;
			self.offset = seek
			buf = pack(">BQ", key|RAP_REPLY, seek)
			c.send(buf)
		elif key == RAP_CLOSE:
			if self.handle_cmd_close != None:
				length = self.handle_cmd_close (fd)
		elif key == RAP_SYSTEM:
			buf = c.recv(4)
			(length,) = unpack(">i", buf)
			ret = c.recv(length)
			if self.handle_cmd_system != None:
				reply = self.handle_cmd_system(ret)
			else:	reply = ""
			buf = pack(">Bi", key|RAP_REPLY, len(str(reply)))
			c.send(buf+reply)
		else:
			print "Unknown command"
			c.close()
	def _handle_client(self, c):
		while True:
			try:
				buf = c.recv(1)
				if buf == "" and self.handle_eof is not None:
					self.handle_eof(c)
					break
				if len(buf) == 0:
					print "Connection closed\n"
					break
				self._handle_packet(c, ord(buf))
			except KeyboardInterrupt:
				break
	def listen_tcp(self, port):
		s = socket();
		s.bind(("0.0.0.0", port))
		s.listen(999)
		print "Listening at port %d"%port
		while True:
			(c, (addr,port)) = s.accept()
			print "New client %s:%d"%(addr,port)
			self._handle_client(c)
##===================================================0
## client api
##===================================================0
class RapClient():
	def __init__(self, host, port):
		self.connect_tcp(host, port)
	def connect_tcp(self, host, port):
		fd = socket();
		fd.connect((host, port))
		self.fd = fd
	def disconnect(self):
		self.fd.close()
		self.fd = None
	def open(self, file, flags):
		b = pack(">BBB", RAP_OPEN, flags, len(file))
		self.fd.send(b)
		self.fd.send(file)
		# response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		if c != (RAP_REPLY|RAP_OPEN):
			print "rmt-open: Invalid response packet 0x%02x"%c
		return l
	def read(self, count):
		b = pack(">Bi", RAP_READ, count) #len(buf))
		self.fd.send(b)
		# response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		buf = self.fd.recv(l)
		return buf
	# TODO: not tested
	def write(self, buf):
		#self.fd.send(buf)
		b = pack(">Bi", RAP_WRITE, len(buf))
		self.fd.send(b+buf)
		# response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		if c != (RAP_REPLY|RAP_WRITE):
			print "rmt-write: Invalid response packet 0x%02x"%c
	def lseek(self, type, addr):
		# WTF BBQ?
		buf = pack(">BBQ", RAP_SEEK, type, addr)
		self.fd.send(buf)
		# read response
		buf = self.fd.recv(5) # XXX READ 5!?!?!? shouldnt be 9 ?!?!? WTF
		(c,l) = unpack(">Bi", buf)
		#print "Lseek : %d"%l
		return l
	def close(self, fd):
		buf = pack(">Bi", RAP_CLOSE, fd)
		self.fd.send(buf)
		# read response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		if c != RAP_REPLY | RAP_CLOSE:
			print "rmt-close: Invalid response packet"
	def cmd(self, cmd):
		buf = pack(">Bi", RAP_CMD, len(str(cmd)))
		self.fd.send(buf + cmd)
		# read response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		if c != RAP_CMD | RAP_REPLY:
			print "rmt-cmd: Invalid response packet"
			return ""
		buf = self.fd.recv(l)
		return buf
	def system(self, cmd):
		buf = pack(">Bi", RAP_SYSTEM, len(str(cmd)))
		self.fd.send(buf)
		self.fd.send(cmd)
		# read response
		buf = self.fd.recv(5)
		(c,l) = unpack(">Bi", buf)
		if c != RAP_SYSTEM | RAP_REPLY:
			print "rmt-system: Invalid response packet"
			return ""
		if l>0:
			buf = self.fd.recv(l)
		return buf
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