This file is indexed.

/usr/lib/python2.7/dist-packages/scapy/main.py is in python-scapy 2.3.3-1.

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
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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
## This file is part of Scapy
## See http://www.secdev.org/projects/scapy for more informations
## Copyright (C) Philippe Biondi <phil@secdev.org>
## This program is published under a GPLv2 license

"""
Main module for interactive startup.
"""

from __future__ import generators
import os,sys
import glob
import types
import gzip
import cPickle
import __builtin__

from scapy.error import *
from scapy import utils
    

def _probe_config_file(cf):
    cf_path = os.path.join(os.path.expanduser("~"), cf)
    try:
        os.stat(cf_path)
    except OSError:
        return None
    else:
        return cf_path

def _read_config_file(cf):
    log_loading.debug("Loading config file [%s]" % cf)
    try:
        execfile(cf)
    except IOError,e:
        log_loading.warning("Cannot read config file [%s] [%s]" % (cf,e))
    except Exception,e:
        log_loading.exception("Error during evaluation of config file [%s]" % cf)
        

DEFAULT_PRESTART_FILE = _probe_config_file(".scapy_prestart.py")
DEFAULT_STARTUP_FILE = _probe_config_file(".scapy_startup.py")

def _usage():
    print """Usage: scapy.py [-s sessionfile] [-c new_startup_file] [-p new_prestart_file] [-C] [-P]
    -C: do not read startup file
    -P: do not read pre-startup file"""
    sys.exit(0)


from scapy.config import conf
from scapy.themes import DefaultTheme


######################
## Extension system ##
######################


def _load(module):
    try:
        mod = __import__(module,globals(),locals(),".")
        if '__all__' in mod.__dict__:
            # import listed symbols
            for name in mod.__dict__['__all__']:
                __builtin__.__dict__[name] = mod.__dict__[name]
        else:
            # only import non-private symbols
            for name, sym in mod.__dict__.iteritems():
                if name[0] != '_':
                    __builtin__.__dict__[name] = sym
    except Exception,e:
        log_interactive.error(e)

def load_module(name):
    _load("scapy.modules."+name)

def load_layer(name):
    _load("scapy.layers."+name)

def load_contrib(name):
    try:
        __import__("scapy.contrib." + name)
        _load("scapy.contrib." + name)
    except ImportError:
        # if layer not found in contrib, try in layers
        load_layer(name)

def list_contrib(name=None):
    if name is None:
        name="*.py"
    elif "*" not in name and "?" not in name and not name.endswith(".py"):
        name += ".py"
    name = os.path.join(os.path.dirname(__file__), "contrib", name)
    for f in glob.glob(name):
        mod = os.path.basename(f)
        if mod.startswith("__"):
            continue
        if mod.endswith(".py"):
            mod = mod[:-3]
        desc = { "description":"-", "status":"?", "name":mod }
        for l in open(f):
            p = l.find("scapy.contrib.")
            if p >= 0:
                p += 14
                q = l.find("=", p)
                key = l[p:q].strip()
                value = l[q+1:].strip()
                desc[key] = value
        print "%(name)-20s: %(description)-40s status=%(status)s" % desc

                        


    

##############################
## Session saving/restoring ##
##############################


def save_session(fname=None, session=None, pickleProto=-1):
    if fname is None:
        fname = conf.session
        if not fname:
            conf.session = fname = utils.get_temp_file(keep=True)
            log_interactive.info("Use [%s] as session file" % fname)
    if session is None:
        session = __builtin__.__dict__["scapy_session"]

    to_be_saved = session.copy()
        
    if to_be_saved.has_key("__builtins__"):
        del(to_be_saved["__builtins__"])

    for k in to_be_saved.keys():
        if type(to_be_saved[k]) in [types.TypeType, types.ClassType, types.ModuleType]:
             log_interactive.error("[%s] (%s) can't be saved." % (k, type(to_be_saved[k])))
             del(to_be_saved[k])

    try:
        os.rename(fname, fname+".bak")
    except OSError:
        pass
    f=gzip.open(fname,"wb")
    cPickle.dump(to_be_saved, f, pickleProto)
    f.close()

def load_session(fname=None):
    if fname is None:
        fname = conf.session
    try:
        s = cPickle.load(gzip.open(fname,"rb"))
    except IOError:
        s = cPickle.load(open(fname,"rb"))
    scapy_session = __builtin__.__dict__["scapy_session"]
    scapy_session.clear()
    scapy_session.update(s)

def update_session(fname=None):
    if fname is None:
        fname = conf.session
    try:
        s = cPickle.load(gzip.open(fname,"rb"))
    except IOError:
        s = cPickle.load(open(fname,"rb"))
    scapy_session = __builtin__.__dict__["scapy_session"]
    scapy_session.update(s)


################
##### Main #####
################

def scapy_delete_temp_files():
    for f in conf.temp_files:
        try:
            os.unlink(f)
        except:
            pass

def scapy_write_history_file(readline):
    if conf.histfile:
        try:
            readline.write_history_file(conf.histfile)
        except IOError,e:
            try:
                warning("Could not write history to [%s]\n\t (%s)" % (conf.histfile,e))
                tmp = utils.get_temp_file(keep=True)
                readline.write_history_file(tmp)
                warning("Wrote history to [%s]" % tmp)
            except:
                warning("Cound not write history to [%s]. Discarded" % tmp)


def interact(mydict=None,argv=None,mybanner=None,loglevel=20):
    global session
    import code,sys,os,getopt,re
    from scapy.config import conf
    conf.interactive = True
    if loglevel is not None:
        conf.logLevel=loglevel

    console_handler = logging.StreamHandler()
    console_handler.setFormatter(logging.Formatter("%(levelname)s: %(message)s"))
    log_scapy.addHandler(console_handler)

    the_banner = "Welcome to Scapy (%s)"
    if mybanner is not None:
        the_banner += "\n"
        the_banner += mybanner

    if argv is None:
        argv = sys.argv

    import atexit
    try:
        import rlcompleter,readline
    except ImportError:
        log_loading.info("Can't load Python libreadline or completer")
        READLINE=0
    else:
        READLINE=1
        class ScapyCompleter(rlcompleter.Completer):
            def global_matches(self, text):
                matches = []
                n = len(text)
                for lst in [dir(__builtin__), session]:
                    for word in lst:
                        if word[:n] == text and word != "__builtins__":
                            matches.append(word)
                return matches


            def attr_matches(self, text):
                m = re.match(r"(\w+(\.\w+)*)\.(\w*)", text)
                if not m:
                    return
                expr, attr = m.group(1, 3)
                try:
                    object = eval(expr)
                except:
                    object = eval(expr, session)
                from scapy.packet import Packet, Packet_metaclass
                if isinstance(object, Packet) or isinstance(object, Packet_metaclass):
                    words = filter(lambda x: x[0]!="_",dir(object))
                    words += [x.name for x in object.fields_desc]
                else:
                    words = dir(object)
                    if hasattr( object,"__class__" ):
                        words = words + rlcompleter.get_class_members(object.__class__)
                matches = []
                n = len(attr)
                for word in words:
                    if word[:n] == attr and word != "__builtins__":
                        matches.append("%s.%s" % (expr, word))
                return matches
    
        readline.set_completer(ScapyCompleter().complete)
        readline.parse_and_bind("C-o: operate-and-get-next")
        readline.parse_and_bind("tab: complete")
    
    
    session=None
    session_name=""
    STARTUP_FILE = DEFAULT_STARTUP_FILE
    PRESTART_FILE = DEFAULT_PRESTART_FILE


    iface = None
    try:
        opts=getopt.getopt(argv[1:], "hs:Cc:Pp:d")
        for opt, parm in opts[0]:
            if opt == "-h":
                _usage()
            elif opt == "-s":
                session_name = parm
            elif opt == "-c":
                STARTUP_FILE = parm
            elif opt == "-C":
                STARTUP_FILE = None
            elif opt == "-p":
                PRESTART_FILE = parm
            elif opt == "-P":
                PRESTART_FILE = None
            elif opt == "-d":
                conf.logLevel = max(1,conf.logLevel-10)
        
        if len(opts[1]) > 0:
            raise getopt.GetoptError("Too many parameters : [%s]" % " ".join(opts[1]))


    except getopt.GetoptError, msg:
        log_loading.error(msg)
        sys.exit(1)

    if PRESTART_FILE:
        _read_config_file(PRESTART_FILE)

    scapy_builtins = __import__("all",globals(),locals(),".").__dict__
    for name, sym in scapy_builtins.iteritems():
        if name [0] != '_':
            __builtin__.__dict__[name] = sym
    globkeys = scapy_builtins.keys()
    globkeys.append("scapy_session")
    scapy_builtins=None # XXX replace with "with" statement
    if mydict is not None:
        __builtin__.__dict__.update(mydict)
        globkeys += mydict.keys()
    

    conf.color_theme = DefaultTheme()
    if STARTUP_FILE:
        _read_config_file(STARTUP_FILE)
        
    if session_name:
        try:
            os.stat(session_name)
        except OSError:
            log_loading.info("New session [%s]" % session_name)
        else:
            try:
                try:
                    session = cPickle.load(gzip.open(session_name,"rb"))
                except IOError:
                    session = cPickle.load(open(session_name,"rb"))
                log_loading.info("Using session [%s]" % session_name)
            except EOFError:
                log_loading.error("Error opening session [%s]" % session_name)
            except AttributeError:
                log_loading.error("Error opening session [%s]. Attribute missing" %  session_name)

        if session:
            if "conf" in session:
                conf.configure(session["conf"])
                session["conf"] = conf
        else:
            conf.session = session_name
            session={"conf":conf}
            
    else:
        session={"conf": conf}

    __builtin__.__dict__["scapy_session"] = session


    if READLINE:
        if conf.histfile:
            try:
                readline.read_history_file(conf.histfile)
            except IOError:
                pass
        atexit.register(scapy_write_history_file,readline)
    
    atexit.register(scapy_delete_temp_files)
    
    IPYTHON=False
    if conf.interactive_shell.lower() == "ipython":
        try:
            import IPython
            IPYTHON=True
        except ImportError, e:
            log_loading.warning("IPython not available. Using standard Python shell instead.")
            IPYTHON=False
        
    if IPYTHON:
        banner = the_banner % (conf.version) + " using IPython %s" % IPython.__version__

        # Old way to embed IPython kept for backward compatibility
        try:
          args = ['']  # IPython command line args (will be seen as sys.argv)
          ipshell = IPython.Shell.IPShellEmbed(args, banner = banner)
          ipshell(local_ns=session)
        except AttributeError, e:
          pass

        # In the IPython cookbook, see 'Updating-code-for-use-with-IPython-0.11-and-later'
        IPython.embed(user_ns=session, banner2=banner)

    else:
        code.interact(banner = the_banner % (conf.version),
                      local=session, readfunc=conf.readfunc)

    if conf.session:
        save_session(conf.session, session)


    for k in globkeys:
        try:
            del(__builtin__.__dict__[k])
        except:
            pass

if __name__ == "__main__":
    interact()