Google Auth Library Client - Class OAuth2 (1.45.2)

Reference documentation and code samples for the Google Auth Library Client class OAuth2.

OAuth2 supports authentication by OAuth2 2-legged flows.

It primary supports

service account authorization
authorization where a user already has an access token

Namespace

Google \ Auth

Methods

__construct

Create a new OAuthCredentials.

The configuration array accepts various options

authorizationUri The authorization server's HTTP endpoint capable of authenticating the end-user and obtaining authorization.
tokenCredentialUri The authorization server's HTTP endpoint capable of issuing tokens and refreshing expired tokens.
clientId A unique identifier issued to the client to identify itself to the authorization server.
clientSecret A shared symmetric secret issued by the authorization server, which is used to authenticate the client.
scope The scope of the access request, expressed either as an Array or as a space-delimited String.
state An arbitrary string designed to allow the client to maintain state.
redirectUri The redirection URI used in the initial request.
username The resource owner's username.
password The resource owner's password.
issuer Issuer ID when using assertion profile
audience Target audience for assertions
expiry Number of seconds assertions are valid for
signingKey Signing key when using assertion profile
signingKeyId Signing key id when using assertion profile
refreshToken The refresh token associated with the access token to be refreshed.
accessToken The current access token for this client.
idToken The current ID token for this client.
extensionParams When using an extension grant type, this is the set of parameters used by that extension.
codeVerifier The code verifier for PKCE for OAuth 2.0.
resource The target service or resource where the client ntends to use the requested security token.
subjectTokenFetcher A fetcher for the "subject_token", which is a security token that represents the identity of the party on behalf of whom the request is being made.
subjectTokenType An identifier that indicates the type of the security token in the subjectToken parameter.
actorToken A security token that represents the identity of the acting party.
actorTokenType An identifier for the representation of the issued security token.

Parameter
Name	Description
`config`	`array` Configuration array

verifyIdToken

Verifies the idToken if present.

if none is present, return null
if present, but invalid, raises DomainException.
otherwise returns the payload in the idtoken as a PHP object.

The behavior of this method varies depending on the version of firebase/php-jwt you are using. In versions 6.0 and above, you cannot provide multiple $allowed_algs, and instead must provide an array of Key objects as the $publicKey.

Parameters
Name	Description
`publicKey`	`string\|Firebase\JWT\Key\|array<Firebase\JWT\Key>` The public key to use to authenticate the token
`allowed_algs`	`string\|string[]` algorithm or array of supported verification algorithms. Providing more than one algorithm will throw an exception.

Returns
Type	Description
`null\|object`

toJwt

Obtains the encoded jwt from the instance data.

Parameter
Name	Description
`config`	`array` array optional configuration parameters

Returns
Type	Description
`string`

generateCredentialsRequest

Generates a request for token credentials.

Parameters
Name	Description
`httpHandler`	`callable\|null` callback which delivers psr7 request
`headers`	`array` [optional] Additional headers to pass to the token endpoint request.

Returns
Type	Description
`Psr\Http\Message\RequestInterface`	the authorization Url.

fetchAuthToken

Fetches the auth tokens based on the current state.

Parameters
Name	Description
`httpHandler`	`callable\|null` callback which delivers psr7 request
`headers`	`array` [optional] If present, add these headers to the token endpoint request.

Returns
Type	Description
`array`	the response

getCacheKey

Obtains a key that can used to cache the results of #fetchAuthToken.

Returns
Type	Description
`?string`	a key that may be used to cache the auth token.

getSubjectTokenFetcher

Gets this instance's SubjectTokenFetcher

Returns
Type	Description
`null\|ExternalAccountCredentialSourceInterface`

parseTokenResponse

Parses the fetched tokens.

Parameter
Name	Description
`resp`	`Psr\Http\Message\ResponseInterface` the response.

Returns
Type	Description
`array`	the tokens parsed from the response body.

updateToken

Updates an OAuth 2.0 client.

Example:

$oauth->updateToken([
    'refresh_token' => 'n4E9O119d',
    'access_token' => 'FJQbwq9',
    'expires_in' => 3600
]);

Parameter

Name Description

config

array

The configuration parameters related to the token.

refresh_token The refresh token associated with the access token to be refreshed.
access_token The current access token for this client.
id_token The current ID token for this client.
expires_in The time in seconds until access token expiration.
expires_at The time as an integer number of seconds since the Epoch
issued_at The timestamp that the token was issued at.

Returns
Type	Description
`void`

buildFullAuthorizationUri

Builds the authorization Uri that the user should be redirected to.

Parameter
Name	Description
`config`	`array` configuration options that customize the return url.

Returns
Type	Description
`Psr\Http\Message\UriInterface`	the authorization Url.

getCodeVerifier

Returns
Type	Description
`string\|null`

setCodeVerifier

generateCodeVerifier

Generates a random 128-character string for the "code_verifier" parameter in PKCE for OAuth 2.0. This is a cryptographically random string that is determined using random_int, hashed using "hash" and sha256, and base64 encoded.

When this method is called, the code verifier is set on the object.

Returns
Type	Description
`string`

setAuthorizationUri

Sets the authorization server's HTTP endpoint capable of authenticating the end-user and obtaining authorization.

Parameter
Name	Description
`uri`	`string`

Returns
Type	Description
`void`

getAuthorizationUri

Gets the authorization server's HTTP endpoint capable of authenticating the end-user and obtaining authorization.

Returns
Type	Description
`?\Psr\Http\Message\UriInterface`

getTokenCredentialUri

Gets the authorization server's HTTP endpoint capable of issuing tokens and refreshing expired tokens.

Returns
Type	Description
`?\Psr\Http\Message\UriInterface`

setTokenCredentialUri

Sets the authorization server's HTTP endpoint capable of issuing tokens and refreshing expired tokens.

Parameter
Name	Description
`uri`	`string`

Returns
Type	Description
`void`

getRedirectUri

Gets the redirection URI used in the initial request.

Returns
Type	Description
`?string`

setRedirectUri

Sets the redirection URI used in the initial request.

Parameter
Name	Description
`uri`	`?string`

Returns
Type	Description
`void`

getScope

Gets the scope of the access requests as a space-delimited String.

Returns
Type	Description
`?string`

getSubjectTokenType

Gets the subject token type

Returns
Type	Description
`?string`

setScope

Sets the scope of the access request, expressed either as an Array or as a space-delimited String.

Parameter
Name	Description
`scope`	`string\|string[]\|null`

Returns
Type	Description
`void`

getGrantType

Gets the current grant type.

Returns
Type	Description
`?string`

setGrantType

Sets the current grant type.

Parameter
Name	Description
`grantType`	`string`

Returns
Type	Description
`void`

getState

Gets an arbitrary string designed to allow the client to maintain state.

Returns
Type	Description
`string`

setState

Sets an arbitrary string designed to allow the client to maintain state.

Parameter
Name	Description
`state`	`string`

Returns
Type	Description
`void`

getCode

Gets the authorization code issued to this client.

Returns
Type	Description
`string`

setCode

Sets the authorization code issued to this client.

Parameter
Name	Description
`code`	`string`

Returns
Type	Description
`void`

getUsername

Gets the resource owner's username.

Returns
Type	Description
`string`

setUsername

Sets the resource owner's username.

Parameter
Name	Description
`username`	`string`

Returns
Type	Description
`void`

getPassword

Gets the resource owner's password.

Returns
Type	Description
`string`

setPassword

Sets the resource owner's password.

Parameter
Name	Description
`password`	`string`

Returns
Type	Description
`void`

getClientId

Sets a unique identifier issued to the client to identify itself to the authorization server.

Returns
Type	Description
`string`

setClientId

Sets a unique identifier issued to the client to identify itself to the authorization server.

Parameter
Name	Description
`clientId`	`string`

Returns
Type	Description
`void`

getClientSecret

Gets a shared symmetric secret issued by the authorization server, which is used to authenticate the client.

Returns
Type	Description
`string`

setClientSecret

Sets a shared symmetric secret issued by the authorization server, which is used to authenticate the client.

Parameter
Name	Description
`clientSecret`	`string`

Returns
Type	Description
`void`

getIssuer

Gets the Issuer ID when using assertion profile.

Returns
Type	Description
`?string`

setIssuer

Sets the Issuer ID when using assertion profile.

Parameter
Name	Description
`issuer`	`string`

Returns
Type	Description
`void`

getSub

Gets the target sub when issuing assertions.

Returns
Type	Description
`?string`

setSub

Sets the target sub when issuing assertions.

Parameter
Name	Description
`sub`	`string`

Returns
Type	Description
`void`

getAudience

Gets the target audience when issuing assertions.

Returns
Type	Description
`?string`

setAudience

Sets the target audience when issuing assertions.

Parameter
Name	Description
`audience`	`string`

Returns
Type	Description
`void`

getSigningKey

Gets the signing key when using an assertion profile.

Returns
Type	Description
`?string`

setSigningKey

Sets the signing key when using an assertion profile.

Parameter
Name	Description
`signingKey`	`string`

Returns
Type	Description
`void`

getSigningKeyId

Gets the signing key id when using an assertion profile.

Returns
Type	Description
`?string`

setSigningKeyId

Sets the signing key id when using an assertion profile.

Parameter
Name	Description
`signingKeyId`	`string`

Returns
Type	Description
`void`

getSigningAlgorithm

Gets the signing algorithm when using an assertion profile.

Returns
Type	Description
`?string`

setSigningAlgorithm

Sets the signing algorithm when using an assertion profile.

Parameter
Name	Description
`signingAlgorithm`	`?string`

Returns
Type	Description
`void`

getExtensionParams

Gets the set of parameters used by extension when using an extension grant type.

Returns
Type	Description
`array`

setExtensionParams

Sets the set of parameters used by extension when using an extension grant type.

Parameter
Name	Description
`extensionParams`	`array`

Returns
Type	Description
`void`

getExpiry

Gets the number of seconds assertions are valid for.

Returns
Type	Description
`int`

setExpiry

Sets the number of seconds assertions are valid for.

Parameter
Name	Description
`expiry`	`int`

Returns
Type	Description
`void`

getExpiresIn

Gets the lifetime of the access token in seconds.

Returns
Type	Description
`int`

setExpiresIn

Sets the lifetime of the access token in seconds.

Parameter
Name	Description
`expiresIn`	`?int`

Returns
Type	Description
`void`

getExpiresAt

Gets the time the current access token expires at.

Returns
Type	Description
`?int`

isExpired

Returns true if the acccess token has expired.

Returns
Type	Description
`bool`

setExpiresAt

Sets the time the current access token expires at.

Parameter
Name	Description
`expiresAt`	`int`

Returns
Type	Description
`void`

getIssuedAt

Gets the time the current access token was issued at.

Returns
Type	Description
`?int`

setIssuedAt

Sets the time the current access token was issued at.

Parameter
Name	Description
`issuedAt`	`int`

Returns
Type	Description
`void`

getAccessToken

Gets the current access token.

Returns
Type	Description
`?string`

setAccessToken

Sets the current access token.

Parameter
Name	Description
`accessToken`	`string`

Returns
Type	Description
`void`

getIdToken

Gets the current ID token.

Returns
Type	Description
`?string`

setIdToken

Sets the current ID token.

Parameter
Name	Description
`idToken`	`string`

Returns
Type	Description
`void`

getGrantedScope

Get the granted space-separated scopes (if they exist) for the last fetched token.

Returns
Type	Description
`string\|null`

setGrantedScope

Sets the current ID token.

Parameter
Name	Description
`grantedScope`	`string`

Returns
Type	Description
`void`

getRefreshToken

Gets the refresh token associated with the current access token.

Returns
Type	Description
`?string`

setRefreshToken

Sets the refresh token associated with the current access token.

Parameter
Name	Description
`refreshToken`	`string`

Returns
Type	Description
`void`

setAdditionalClaims

Sets additional claims to be included in the JWT token

Parameter
Name	Description
`additionalClaims`	`array`

Returns
Type	Description
`void`

getAdditionalClaims

Gets the additional claims to be included in the JWT token.

Returns
Type	Description
`array`

getIssuedTokenType

Gets the additional claims to be included in the JWT token.

Returns
Type	Description
`?string`

getLastReceivedToken

The expiration of the last received token.

Returns
Type	Description
`array\|null`

getClientName

Get the client ID.

Alias of OAuth2::getClientId().

Parameter
Name	Description
`httpHandler`	`callable\|null`

Returns
Type	Description
`string`

Constants

DEFAULT_EXPIRY_SECONDS

Value: 3600

DEFAULT_SKEW_SECONDS

Value: 60

JWT_URN

Value: 'urn:ietf:params:oauth:grant-type:jwt-bearer'

STS_URN

Value: 'urn:ietf:params:oauth:grant-type:token-exchange'