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libphutil/src/auth/PhutilAuthAdapter.php
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PhutilAuthAdapter.php
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<?php
/**
* Abstract interface to an identity provider or authentication source, like
* Twitter, Facebook or Google.
*
* Generally, adapters are handed some set of credentials particular to the
* provider they adapt, and they turn those credentials into standard
* information about the user's identity. For example, the LDAP adapter is given
* a username and password (and some other configuration information), uses them
* to talk to the LDAP server, and produces a username, email, and so forth.
*
* Since the credentials a provider requires are specific to each provider, the
* base adapter does not specify how an adapter should be constructed or
* configured -- only what information it is expected to be able to provide once
* properly configured.
*/
abstract class PhutilAuthAdapter extends Phobject {
/**
* Get a unique identifier associated with the identity. For most providers,
* this is an account ID.
*
* The account ID needs to be unique within this adapter's configuration, such
* that `<adapterKey, accountID>` is globally unique and always identifies the
* same identity.
*
* If the adapter was unable to authenticate an identity, it should return
* `null`.
*
* @return string|null Unique account identifier, or `null` if authentication
* failed.
*/
abstract public function getAccountID();
/**
* Get a string identifying this adapter, like "ldap". This string should be
* unique to the adapter class.
*
* @return string Unique adapter identifier.
*/
abstract public function getAdapterType();
/**
* Get a string identifying the domain this adapter is acting on. This allows
* an adapter (like LDAP) to act against different identity domains without
* conflating credentials. For providers like Facebook or Google, the adapters
* just return the relevant domain name.
*
* @return string Domain the adapter is associated with.
*/
abstract public function getAdapterDomain();
/**
* Generate a string uniquely identifying this adapter configuration. Within
* the scope of a given key, all account IDs must uniquely identify exactly
* one identity.
*
* @return string Unique identifier for this adapter configuration.
*/
public function getAdapterKey() {
return $this->getAdapterType().':'.$this->getAdapterDomain();
}
/**
* Optionally, return an email address associated with this account.
*
* @return string|null An email address associated with the account, or
* `null` if data is not available.
*/
public function getAccountEmail() {
return null;
}
/**
* Optionally, return a human readable username associated with this account.
*
* @return string|null Account username, or `null` if data isn't available.
*/
public function getAccountName() {
return null;
}
/**
* Optionally, return a URI corresponding to a human-viewable profile for
* this account.
*
* @return string|null A profile URI associated with this account, or
* `null` if the data isn't available.
*/
public function getAccountURI() {
return null;
}
/**
* Optionally, return a profile image URI associated with this account.
*
* @return string|null URI for an account profile image, or `null` if one is
* not available.
*/
public function getAccountImageURI() {
return null;
}
/**
* Optionally, return a real name associated with this account.
*
* @return string|null A human real name, or `null` if this data is not
* available.
*/
public function getAccountRealName() {
return null;
}
}
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