GoaOAuth2Provider

GoaOAuth2Provider — Abstract base class for OAuth 2.0 providers

Types and Values

Object Hierarchy

    GObject
    ╰── GoaProvider
        ╰── GoaOAuth2Provider

Functions

goa_oauth2_provider_get_authorization_uri ()

const gchar *
goa_oauth2_provider_get_authorization_uri
                               (GoaOAuth2Provider *provider);

Gets the authorization endpoint used for authenticating the user and obtaining authorization.

You should not include any parameters in the returned URI. If you need to include additional parameters than the standard ones, override GoaOAuth2ProviderClass.build_authorization_uri - see goa_oauth2_provider_build_authorization_uri() for more details.

This is a pure virtual method - a subclass must provide an implementation.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_token_uri ()

const gchar *
goa_oauth2_provider_get_token_uri (GoaOAuth2Provider *provider);

Gets the token endpoint used for obtaining an access token.

A token URI is only needed when the OAuth2 provider does not support a separate client-side flow. In such cases, override GoaOAuth2ProviderClass.get_token_uri. You should not include any parameters in the returned URI.

This is a virtual method where the default implementation returns NULL.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_redirect_uri ()

const gchar *
goa_oauth2_provider_get_redirect_uri (GoaOAuth2Provider *provider);

Gets the redirect_uri used when requesting authorization.

This is a pure virtual method - a subclass must provide an implementation.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_scope ()

const gchar *
goa_oauth2_provider_get_scope (GoaOAuth2Provider *provider);

Gets the scope used when requesting authorization.

This is a virtual method where the default implementation returns NULL.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_client_id ()

const gchar *
goa_oauth2_provider_get_client_id (GoaOAuth2Provider *provider);

Gets the client_id identifying the client.

This is a pure virtual method - a subclass must provide an implementation.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_client_secret ()

const gchar *
goa_oauth2_provider_get_client_secret (GoaOAuth2Provider *provider);

Gets the client_secret associated with the client.

This is a pure virtual method - a subclass must provide an implementation.

Parameters

self

A GoaOAuth2Provider.

 

Returns

A string owned by self - do not free.

[transfer none]


goa_oauth2_provider_get_use_mobile_browser ()

gboolean
goa_oauth2_provider_get_use_mobile_browser
                               (GoaOAuth2Provider *provider);

Returns whether there is a need for the embedded browser to identify itself as running on a mobile phone in order to get a more compact version of the approval page.

This is a virtual method where the default implementation returns FALSE.

Parameters

self

A GoaOAuth2Provider.

 

Returns

TRUE if the embedded browser should identify itself as running on a mobile platform, FALSE otherwise.


goa_oauth2_provider_is_deny_node ()

gboolean
goa_oauth2_provider_is_deny_node (GoaOAuth2Provider *provider,
                                  WebKitDOMNode *node);

Checks whether node is the HTML UI element that the user can use to deny permission to access his account. Usually they are either a WebKitDOMHTMLButtonElement or a WebKitDOMHTMLInputElement.

Please note that providers may have multiple such elements in their UI and this method should catch all of them.

This is a virtual method where the default implementation returns FALSE.

Parameters

self

A GoaOAuth2Provider.

 

node

A WebKitDOMNode.

 

Returns

TRUE if the node can be used to deny permission.


goa_oauth2_provider_is_identity_node ()

gboolean
goa_oauth2_provider_is_identity_node (GoaOAuth2Provider *provider,
                                      WebKitDOMHTMLInputElement *element);

Checks whether element is the HTML UI element that the user can use to identify herself at the provider.

This is a pure virtual method - a subclass must provide an implementation.

Parameters

self

A GoaOAuth2Provider.

 

element

A WebKitDOMHTMLInputElement.

 

Returns

TRUE if the element can be used to deny permission.


goa_oauth2_provider_is_password_node ()

gboolean
goa_oauth2_provider_is_password_node (GoaOAuth2Provider *provider,
                                      WebKitDOMHTMLInputElement *element);

Checks whether element is the HTML UI element that the user can use to enter her password. This can be used to offer a GoaPasswordBased interface by saving the user's password. Providers usually frown upon doing this, so this is not recommended.

This is a virtual method where the default implementation returns FALSE.

Parameters

self

A GoaOAuth2Provider.

 

element

A WebKitDOMHTMLInputElement

 

Returns

TRUE if element can be used to enter the password.


goa_oauth2_provider_build_authorization_uri ()

gchar *
goa_oauth2_provider_build_authorization_uri
                               (GoaOAuth2Provider *provider,
                                const gchar *authorization_uri,
                                const gchar *escaped_redirect_uri,
                                const gchar *escaped_client_id,
                                const gchar *escaped_scope);

Builds the URI that can be opened in a web browser (or embedded web browser widget) to start authenticating an user.

The default implementation just returns the expected URI (e.g. http://example.com/dialog/oauth2?response_type=code&redirect_uri=https3A2F2Fclient2Eexample2Ecom2Fcb&client_id=foo&scope=email20stuff)

  • override (and chain up) if you e.g. need to to pass additional parameters.

The authorization_uri , escaped_redirect_uri , escaped_client_id and escaped_scope parameters originate from the result of the the goa_oauth2_provider_get_authorization_uri(), goa_oauth2_provider_get_redirect_uri(), goa_oauth2_provider_get_client_id() and goa_oauth2_provider_get_scope() methods with the latter three escaped using g_uri_escape_string().

Parameters

self

A GoaOAuth2Provider.

 

authorization_uri

An authorization URI.

 

escaped_redirect_uri

An escaped redirect URI

 

escaped_client_id

An escaped client id

 

escaped_scope

The escaped scope or NULL.

[allow-none]

Returns

An authorization URI that must be freed with g_free().

[transfer full]


goa_oauth2_provider_add_account_key_values ()

void
goa_oauth2_provider_add_account_key_values
                               (GoaOAuth2Provider *provider,
                                GVariantBuilder *builder);

Hook for implementations to add key/value pairs to the key-file when creating an account.

This is a virtual method where the default implementation does nothing.

Parameters

self

A GoaProvider.

 

builder

A GVariantBuilder for a a{ss} variant.

 

goa_oauth2_provider_get_identity_sync ()

gchar *
goa_oauth2_provider_get_identity_sync (GoaOAuth2Provider *provider,
                                       const gchar *access_token,
                                       gchar **out_presentation_identity,
                                       GCancellable *cancellable,
                                       GError **error);

Method that returns the identity corresponding to access_token .

The identity is needed because all authentication happens out of band. In addition to the identity, an implementation also returns a presentation identity that is more suitable for presentation (the identity could be a GUID for example).

The calling thread is blocked while the identity is obtained.

Parameters

self

A GoaOAuth2Provider.

 

access_token

A valid OAuth 2.0 access token.

 

out_presentation_identity

Return location for presentation identity or NULL.

[out]

cancellable

A GCancellable or NULL.

[allow-none]

error

Return location for error or NULL.

 

Returns

The identity or NULL if error is set. The returned string must be freed with g_free().


goa_oauth2_provider_get_access_token_sync ()

gchar *
goa_oauth2_provider_get_access_token_sync
                               (GoaOAuth2Provider *provider,
                                GoaObject *object,
                                gboolean force_refresh,
                                gint *out_access_token_expires_in,
                                GCancellable *cancellable,
                                GError **error);

Synchronously gets an access token for object . The calling thread is blocked while the operation is pending.

The resulting token is typically read from the local cache so most of the time only a local roundtrip to the storage for the token cache (e.g. gnome-keyring-daemon) is needed. However, the operation may involve refreshing the token with the service provider so a full network round-trip may be needed.

Note that multiple calls are serialized to avoid multiple outstanding requests to the service provider.

This operation may fail if e.g. unable to refresh the credentials or if network connectivity is not available. Note that even if a token is returned, the returned token isn't guaranteed to work - use goa_provider_ensure_credentials_sync() if you need stronger guarantees.

Parameters

self

A GoaOAuth2Provider.

 

object

A GoaObject.

 

force_refresh

If set to TRUE, forces a refresh of the access token, if possible.

 

out_access_token_expires_in

Return location for how many seconds the returned token is valid for (0 if unknown) or NULL.

[out]

cancellable

A GCancellable or NULL.

[allow-none]

error

Return location for error or NULL.

 

Returns

The access token or NULL if error is set. The returned string must be freed with g_free().


goa_oauth2_provider_process_redirect_url ()

gboolean
goa_oauth2_provider_process_redirect_url
                               (GoaOAuth2Provider *provider,
                                const gchar *redirect_url,
                                gchar **authorization_code,
                                GError **error);

Certain OAuth2-like, but not exactly OAuth2, providers do not follow the standard mechanisms for extracting the access token or auth code from the redirect URI. They use some non-standard technique to do so. This is a provider specific hook to accommodate them and will only be used if implemented.

This is a pure virtual method - a subclass must provide an implementation if needed.

Parameters

self

A GoaOAuth2Provider.

 

redirect_url

A redirect URI from the web browser

 

authorization_code

Return location for access token.

[out]

error

Return location for error or NULL

 

Returns

TRUE if provider could process redirect_url , FALSE otherwise.

Types and Values

GoaOAuth2Provider

typedef struct _GoaOAuth2Provider GoaOAuth2Provider;

The GoaOAuth2Provider structure contains only private data and should only be accessed using the provided API.


GoaOAuth2ProviderClass

typedef struct {
  GoaProviderClass parent_class;

  /* pure virtual */
  const gchar *(*get_authorization_uri)        (GoaOAuth2Provider            *provider);
  const gchar *(*get_redirect_uri)             (GoaOAuth2Provider            *provider);
  const gchar *(*get_client_id)                (GoaOAuth2Provider            *provider);
  const gchar *(*get_client_secret)            (GoaOAuth2Provider            *provider);
  gchar       *(*get_identity_sync)            (GoaOAuth2Provider            *provider,
                                                const gchar                  *access_token,
                                                gchar                       **out_presentation_identity,
                                                GCancellable                 *cancellable,
                                                GError                      **error);

  /* virtual but with default implementation */
  gchar       *(*build_authorization_uri)      (GoaOAuth2Provider            *provider,
                                                const gchar                  *authorization_uri,
                                                const gchar                  *escaped_redirect_uri,
                                                const gchar                  *escaped_client_id,
                                                const gchar                  *escaped_scope);
  const gchar *(*get_token_uri)                (GoaOAuth2Provider            *provider);
  const gchar *(*get_scope)                    (GoaOAuth2Provider            *provider);
  gboolean     (*get_use_mobile_browser)       (GoaOAuth2Provider            *provider);
  void         (*add_account_key_values)       (GoaOAuth2Provider            *provider,
                                                GVariantBuilder              *builder);

  /* pure virtual */
  gboolean     (*is_identity_node)             (GoaOAuth2Provider            *provider,
                                                WebKitDOMHTMLInputElement    *element);

  /* virtual but with default implementation */
  gboolean     (*is_deny_node)                 (GoaOAuth2Provider            *provider,
                                                WebKitDOMNode                *node);
  gboolean     (*is_password_node)             (GoaOAuth2Provider            *provider,
                                                WebKitDOMHTMLInputElement    *element);
  gboolean     (*decide_navigation_policy)     (GoaOAuth2Provider              *provider,
                                                WebKitWebView                  *web_view,
                                                WebKitNavigationPolicyDecision *decision);
  gboolean     (*process_redirect_url)         (GoaOAuth2Provider            *provider,
                                                const gchar                  *redirect_url,
                                                gchar                       **access_token,
                                                GError                      **error);
} GoaOAuth2ProviderClass;

Class structure for GoaOAuth2Provider.

Members

get_authorization_uri ()

Virtual function for goa_oauth2_provider_get_authorization_uri().

 

get_redirect_uri ()

Virtual function for goa_oauth2_provider_get_redirect_uri().

 

get_client_id ()

Virtual function for goa_oauth2_provider_get_client_id().

 

get_client_secret ()

Virtual function for goa_oauth2_provider_get_client_secret().

 

get_identity_sync ()

Virtual function for goa_oauth2_provider_get_identity_sync().

 

build_authorization_uri ()

Virtual function for goa_oauth2_provider_build_authorization_uri().

 

get_token_uri ()

Virtual function for goa_oauth2_provider_get_token_uri().

 

get_scope ()

Virtual function for goa_oauth2_provider_get_scope().

 

get_use_mobile_browser ()

Virtual function for goa_oauth2_provider_get_use_mobile_browser().

 

add_account_key_values ()

Virtual function for goa_oauth2_provider_add_account_key_values().

 

is_identity_node ()

Virtual function for goa_oauth2_provider_is_identity_node().

 

is_deny_node ()

Virtual function for goa_oauth2_provider_is_deny_node().

 

is_password_node ()

Virtual function for goa_oauth2_provider_is_password_node().

 

decide_navigation_policy ()

Virtual function for goa_oauth2_provider_decide_navigation_policy().

 

process_redirect_url ()

Virtual function for goa_oauth2_provider_process_redirect_url().