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basic support for $VAR and ${VAR}

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This commit is contained in:
Michel Oosterhof
2016-04-11 13:17:13 +04:00
parent 7fab139876
commit a4bfe297b9
2 changed files with 21 additions and 1 deletions
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20
cowrie/core/honeypot.py
View File

@@ -154,11 +154,31 @@ class HoneyPotShell(object):
continue
if tok == '||':
continue
if tok == '$?':
tok = "0"
elif tok[0] == '$':
env_rex = re.compile('^\$([_a-zA-Z0-9]+)$')
env_search = env_rex.search(tok)
if env_search != None:
env_match = env_search.group(1)
if env_match in list(self.environ.keys()):
tok = self.environ[env_match]
else:
continue
env_rex = re.compile('^\${([_a-zA-Z0-9]+)}$')
env_search = env_rex.search(tok)
if env_search != None:
env_match = env_search.group(1)
if env_match in list(self.environ.keys()):
tok = self.environ[env_match]
else:
continue
tokens.append(tok)
except Exception as e:
self.protocol.terminal.write(
'bash: syntax error: unexpected end of file\n')
# Could run runCommand here, but i'll just clear the list instead
log.msg( "exception: {}".format(e) )
self.cmdpending = []
self.showPrompt()
return

2
cowrie/core/shlex.py
View File

@@ -63,7 +63,7 @@ class shlex:
# _pushback_chars is a push back queue used by lookahead logic
self._pushback_chars = deque()
# these chars added because allowed in file names, args, wildcards
self.wordchars += '~-./*?=$:'
self.wordchars += '{}~-./*?=$:'
#remove any punctuation chars from wordchars
self.wordchars = ''.join(c for c in self.wordchars if c not in
self.punctuation_chars)