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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241
|
#!/usr/bin/python
import sys
import os
import pprint
import struct
# Change path so we find Xlib
sys.path.insert(1, os.path.join(sys.path[0], '..'))
def dummy_buffer(str, x, y = sys.maxint):
return str[x:y]
__builtins__.buffer = dummy_buffer
from Xlib.protocol import display, request, rq, event
from Xlib import error
# We don't want any fancy dictwrapper, just plain mappings
rq.DictWrapper = lambda x: x
class BugFile:
def __init__(self, file):
self.file = file
self.cbuf = self.sbuf = ''
def read_client(self, bytes):
while len(self.cbuf) < bytes and self.file:
self.read_next()
d = self.cbuf[:bytes]
self.cbuf = self.cbuf[bytes:]
return d
def read_server(self, bytes):
while len(self.sbuf) < bytes and self.file:
self.read_next()
d = self.sbuf[:bytes]
self.sbuf = self.sbuf[bytes:]
return d
def read_next(self):
line = self.file.readline()
if line == '':
self.file = None
return
src = line[0]
length = int(line[1:-1])
data = self.file.read(length)
if src == 'C':
self.cbuf = self.cbuf + data
elif src == 'S':
self.sbuf = self.sbuf + data
else:
raise ValueError('Bad control line: %s' % line)
class ParseString:
def __init__(self, datafunc):
self.get_data = datafunc
self.data = ''
def __getitem__(self, i):
if i < 0:
raise ValueError('bad string index: %d' % i)
if len(self.data) <= i:
if not self.get_data:
raise RuntimeError('attempt to allocate more data after returning a new ParseString')
self.data = self.data + self.get_data(i - len(self.data) + 1)
return self.data[i]
def __getslice__(self, i, j):
if j == sys.maxint:
if self.get_data:
ps = ParseString(self.get_data)
self.get_data = None
return ps
else:
raise RuntimeError('attempt to allocate another ParseString')
if i < 0 or j < 0 or i > j:
raise ValueError('bad slice indices: [%d:%d]' % (i, j))
if len(self.data) < j:
if not self.get_data:
raise RuntimeError('attempt to allocate more data after returning a new ParseString')
self.data = self.data + self.get_data(j - len(self.data))
return self.data[i:j]
class DummyDisplay:
def get_resource_class(self, name):
return None
class ParseXbug:
def __init__(self, infile = sys.stdin, outfile = sys.stdout):
bf = BugFile(infile)
self.cdata = ParseString(bf.read_client)
sdata = ParseString(bf.read_server)
self.outfile = outfile
self.xpprint = pprint.PrettyPrinter(indent = 2, stream = outfile)
self.disp = DummyDisplay()
# Parse client setup request
r, self.cdata = display.ConnectionSetupRequest._request.parse_binary(self.cdata, self.disp)
self.print_xbug('request', 'ConnectionSetup', r)
# Parse server reply
r, sdata = display.ConnectionSetupRequest._reply.parse_binary(sdata, self.disp)
extra = r['additional_length'] * 4
del r['additional_length']
extradata = sdata[:extra]
sdata = sdata[extra:]
if r['status'] == 0:
r['reason'] = extradata[:r['reason_length']]
del r['status']
del r['reason_length']
self.print_xbug('error', 'ConnectionSetup', r)
return
elif r['status'] == 1:
r2, d = display.ConnectionSetupRequest._success_reply.parse_binary(extradata, self.disp)
del r['status']
del r['reason_length']
r.update(r2)
del r2
self.print_xbug('reply', 'ConnectionSetup', r)
else:
raise ValueError('bad connection setup reply status: %d' % r['status'])
self.last_serial = 0
self.last_request = None
while 1:
# Get next server item, always at least 32 bytes
d = sdata[:32]
if len(d) != 32:
# Print out remaining requests
try:
self.get_requests(sys.maxint)
except ValueError:
pass
return
sdata = sdata[32:]
# Check type
t = ord(d[0])
# Error
if t == 0:
# Code is second byte
code = ord(d[1])
# Fetch error class
estruct = error.xerror_class.get(code, error.XError)
r, d = estruct._fields.parse_binary(d, self.disp)
del r['type']
self.get_requests(r['sequence_number'])
self.print_xbug('error', estruct.__name__, r)
# Reply
elif t == 1:
# Get sequence number, and read corresponding request
sno = struct.unpack('=H', d[2:4])[0]
self.get_requests(sno)
# Get entire reply length
rlen = int(struct.unpack('=L', d[4:8])[0]) * 4
d = d + sdata[:rlen]
sdata = sdata[rlen:]
if self.last_request:
r, d = self.last_request._reply.parse_binary(d, self.disp)
self.print_xbug('reply', self.last_request.__name__, r)
else:
self.print_xbug('reply', 'Unknown',
{ 'sequence_number': sno })
# Some event
else:
estruct = event.event_class.get(t, event.AnyEvent)
r, d = estruct._fields.parse_binary(d, self.disp)
self.get_requests(r['sequence_number'])
self.print_xbug('event', estruct.__name__, r)
def get_requests(self, serial):
# Get request length
while self.last_serial < serial:
d = self.cdata[2:4]
if len(d) != 2:
raise ValueError('client request missing')
rlen = struct.unpack('=H', d)[0] * 4
d = self.cdata[:rlen]
if len(d) != rlen:
raise ValueError('client request missing')
self.cdata = self.cdata[rlen:]
opcode = ord(d[0])
self.last_request = request.major_codes.get(opcode)
self.last_serial = self.last_serial + 1
if self.last_request:
r, d = self.last_request._request.parse_binary(d, self.disp)
r['sequence_number'] = self.last_serial
self.print_xbug('request', self.last_request.__name__, r)
else:
self.print_xbug('request', 'Unknown (%d)' % opcode,
{ 'sequence_number': self.last_serial })
def print_xbug(self, rtype, name, data):
self.outfile.write('%-8s %s\n' % (rtype + ':', name))
self.xpprint.pprint(data)
self.outfile.write('\n')
if __name__ == '__main__':
ParseXbug()
|