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Merge pull request #3740 from jimi1283/issue_3716
Adding support for hashed known_hosts entries
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commit
f7723651d3
1 changed files with 18 additions and 2 deletions
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@ -23,7 +23,9 @@ import pipes
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import random
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import select
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import fcntl
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import hmac
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import pwd
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from hashlib import sha1
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import ansible.constants as C
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from ansible.callbacks import vvv
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from ansible import errors
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@ -39,6 +41,7 @@ class Connection(object):
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self.user = user
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self.password = password
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self.private_key_file = private_key_file
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self.HASHED_KEY_MAGIC = "|1|"
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def connect(self):
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''' connect to the remote host '''
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@ -105,8 +108,21 @@ class Connection(object):
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if line is None or line.find(" ") == -1:
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continue
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tokens = line.split()
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if host in tokens[0]:
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return False
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if tokens[0].find(self.HASHED_KEY_MAGIC) == 0:
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# this is a hashed known host entry
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try:
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(kn_salt,kn_host) = tokens[0][len(self.HASHED_KEY_MAGIC):].split("|",2)
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hash = hmac.new(kn_salt.decode('base64'), digestmod=sha1)
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hash.update(host)
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if hash.digest() == kn_host.decode('base64'):
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return False
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except:
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# invalid hashed host key, skip it
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continue
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else:
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# standard host file entry
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if host in tokens[0]:
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return False
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return True
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def exec_command(self, cmd, tmp_path, sudo_user,sudoable=False, executable='/bin/sh'):
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