class documentation

class SSHPublicKeyDatabase: (source)

Implements interfaces: twisted.cred.checkers.ICredentialsChecker

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Checker that authenticates SSH public keys, based on public keys listed in authorized_keys and authorized_keys2 files in user .ssh/ directories.

Method checkKey Retrieve files containing authorized keys and check against user credentials.
Method getAuthorizedKeysFiles Return a list of FilePath instances for authorized_keys files which might contain information about authorized keys for the given credentials.
Method requestAvatarId Validate credentials and produce an avatar ID.
Class Variable credentialInterfaces A list of sub-interfaces of ICredentials which specifies which I may check.
Method _cbRequestAvatarId Check whether the credentials themselves are valid, now that we know if the key matches the user.
Method _ebRequestAvatarId Undocumented
Class Variable _userdb Undocumented
def checkKey(self, credentials): (source)

Retrieve files containing authorized keys and check against user credentials.

def getAuthorizedKeysFiles(self, credentials): (source)

Return a list of FilePath instances for authorized_keys files which might contain information about authorized keys for the given credentials.

On OpenSSH servers, the default location of the file containing the list of authorized public keys is $HOME/.ssh/authorized_keys.

$HOME/.ssh/authorized_keys2 is also returned, though it has been deprecated by OpenSSH since 2001.

Returns
A list of FilePath instances to files with the authorized keys.
def requestAvatarId(self, credentials): (source)

Validate credentials and produce an avatar ID.

Parameters
credentialssomething which implements one of the interfaces in credentialInterfaces.
Returns
a Deferred which will fire with a bytes that identifies an avatar, an empty tuple to specify an authenticated anonymous user (provided as twisted.cred.checkers.ANONYMOUS) or fail with UnauthorizedLogin. Alternatively, return the result itself.
See Also
twisted.cred.credentials
credentialInterfaces = (source)

A list of sub-interfaces of ICredentials which specifies which I may check.

def _cbRequestAvatarId(self, validKey, credentials): (source)

Check whether the credentials themselves are valid, now that we know if the key matches the user.

Parameters
validKeyA boolean indicating whether or not the public key matches a key in the user's authorized_keys file.
credentials:ISSHPrivateKey providerThe credentials offered by the user.
Returns
The user's username, if authentication was successful.
Raises
UnauthorizedLogin(as a failure) if the key does not match the user in credentials. Also raised if the user provides an invalid signature.
ValidPublicKey(as a failure) if the key matches the user but the credentials do not include a signature. See error.ValidPublicKey for more information.
def _ebRequestAvatarId(self, f): (source)

Undocumented

Undocumented