use strict;
use warnings;
+use String::RewritePrefix;
use base qw/Class::Accessor::Fast/;
my $self = { config => $config };
bless $self, $class;
-
+
$self->name($realmname);
-
+
if (!exists($self->config->{'use_session'})) {
if (exists($app->config->{'Plugin::Authentication'}{'use_session'})) {
$self->config->{'use_session'} = $app->config->{'Plugin::Authentication'}{'use_session'};
$app->log->debug("Setting up auth realm $realmname") if $app->debug;
- # use the Null store as a default
- if( ! exists $config->{store}{class} ) {
+ # use the Null store as a default - Don't complain if the realm class is being overridden,
+ # as the new realm may behave differently.
+ if( ! exists($config->{store}{class}) ) {
$config->{store}{class} = '+Catalyst::Authentication::Store::Null';
- $app->log->debug( qq(No Store specified for realm "$realmname", using the Null store.) );
- }
+ if (! exists($config->{class})) {
+ $app->log->debug( qq(No Store specified for realm "$realmname", using the Null store.) );
+ }
+ }
my $storeclass = $config->{'store'}{'class'};
-
+
## follow catalyst class naming - a + prefix means a fully qualified class, otherwise it's
## taken to mean C::P::A::Store::(specifiedclass)
- if ($storeclass !~ /^\+(.*)$/ ) {
- $storeclass = "Catalyst::Authentication::Store::${storeclass}";
- } else {
- $storeclass = $1;
- }
+ $storeclass = String::RewritePrefix->rewrite({
+ '' => 'Catalyst::Authentication::Store::',
+ '+' => '',
+ }, $storeclass);
- # a little niceness - since most systems seem to use the password credential class,
+ # a little niceness - since most systems seem to use the password credential class,
# if no credential class is specified we use password.
$config->{credential}{class} ||= '+Catalyst::Authentication::Credential::Password';
my $credentialclass = $config->{'credential'}{'class'};
-
+
## follow catalyst class naming - a + prefix means a fully qualified class, otherwise it's
## taken to mean C::A::Credential::(specifiedclass)
- if ($credentialclass !~ /^\+(.*)$/ ) {
- $credentialclass = "Catalyst::Authentication::Credential::${credentialclass}";
- } else {
- $credentialclass = $1;
- }
-
+ $credentialclass = String::RewritePrefix->rewrite({
+ '' => 'Catalyst::Authentication::Credential::',
+ '+' => '',
+ }, $credentialclass);
+
# if we made it here - we have what we need to load the classes
-
- ### BACKWARDS COMPATIBILITY - DEPRECATION WARNING:
+
+ ### BACKWARDS COMPATIBILITY - DEPRECATION WARNING:
### we must eval the ensure_class_loaded - because we might need to try the old-style
- ### ::Plugin:: module naming if the standard method fails.
-
+ ### ::Plugin:: module naming if the standard method fails.
+
## Note to self - catch second exception and bitch in detail?
-
+
eval {
Catalyst::Utils::ensure_class_loaded( $credentialclass );
};
-
+
if ($@) {
+ # If the file is missing, then try the old-style fallback,
+ # but re-throw anything else for the user to deal with.
+ die unless $@ =~ /^Can't locate/;
$app->log->warn( qq(Credential class "$credentialclass" not found, trying deprecated ::Plugin:: style naming. ) );
my $origcredentialclass = $credentialclass;
$credentialclass =~ s/Catalyst::Authentication/Catalyst::Plugin::Authentication/;
eval { Catalyst::Utils::ensure_class_loaded( $credentialclass ); };
if ($@) {
- Carp::croak "Unable to load credential class, " . $origcredentialclass . " OR " . $credentialclass .
+ # Likewise this croak is useful if the second exception is also "not found",
+ # but would be confusing if it's anything else.
+ die unless $@ =~ /^Can't locate/;
+ Carp::croak "Unable to load credential class, " . $origcredentialclass . " OR " . $credentialclass .
" in realm " . $self->name;
}
}
-
+
eval {
Catalyst::Utils::ensure_class_loaded( $storeclass );
};
-
+
if ($@) {
+ # If the file is missing, then try the old-style fallback,
+ # but re-throw anything else for the user to deal with.
+ die unless $@ =~ /^Can't locate/;
$app->log->warn( qq(Store class "$storeclass" not found, trying deprecated ::Plugin:: style naming. ) );
my $origstoreclass = $storeclass;
$storeclass =~ s/Catalyst::Authentication/Catalyst::Plugin::Authentication/;
eval { Catalyst::Utils::ensure_class_loaded( $storeclass ); };
if ($@) {
- Carp::croak "Unable to load store class, " . $origstoreclass . " OR " . $storeclass .
+ # Likewise this croak is useful if the second exception is also "not found",
+ # but would be confusing if it's anything else.
+ die unless $@ =~ /^Can't locate/;
+ Carp::croak "Unable to load store class, " . $origstoreclass . " OR " . $storeclass .
" in realm " . $self->name;
}
}
-
- # BACKWARDS COMPATIBILITY - if the store class does not define find_user, we define it in terms
- # of get_user and add it to the class. this is because the auth routines use find_user,
+
+ # BACKWARDS COMPATIBILITY - if the store class does not define find_user, we define it in terms
+ # of get_user and add it to the class. this is because the auth routines use find_user,
# and rely on it being present. (this avoids per-call checks)
if (!$storeclass->can('find_user')) {
no strict 'refs';
$self->get_user($info->{id}, @rest);
};
}
-
+
## a little cruft to stay compatible with some poorly written stores / credentials
## we'll remove this soon.
if ($storeclass->can('new')) {
$app->log->error("THIS IS DEPRECATED: $credentialclass has no new() method - Attempting to use uninstantiated");
$self->credential($credentialclass);
}
-
+
return $self;
}
my ( $self, $authinfo, $c ) = @_;
my $res = $self->store->find_user($authinfo, $c);
-
+
if (!$res) {
if ($self->config->{'auto_create_user'} && $self->store->can('auto_create_user') ) {
$res = $self->store->auto_create_user($authinfo, $c);
}
} elsif ($self->config->{'auto_update_user'} && $self->store->can('auto_update_user')) {
$res = $self->store->auto_update_user($authinfo, $c, $res);
- }
-
+ }
+
return $res;
}
sub user_is_restorable {
my ($self, $c) = @_;
-
+
return unless
- $c->isa("Catalyst::Plugin::Session")
+ $c->can('session')
and $self->config->{'use_session'}
and $c->session_is_valid;
sub restore_user {
my ($self, $c, $frozen_user) = @_;
-
+
$frozen_user ||= $self->user_is_restorable($c);
return unless defined($frozen_user);
my $user = $self->from_session( $c, $frozen_user );
-
+
if ($user) {
$c->_user( $user );
-
+
# this sets the realm the user originated in.
$user->auth_realm($self->name);
- } else {
- Catalyst::Exception->throw("Store claimed to have a restorable user, but restoration failed. Did you change the user's id_field?");
- }
-
+ }
+ else {
+ $self->failed_user_restore($c) ||
+ $c->error("Store claimed to have a restorable user, but restoration failed. Did you change the user's id_field?");
+ }
+
return $user;
}
+## this occurs if there is a session but the thing the session refers to
+## can not be found. Do what you must do here.
+## Return true if you can fix the situation and find a user, false otherwise
+sub failed_user_restore {
+ my ($self, $c) = @_;
+
+ $self->remove_persisted_user($c);
+ return;
+}
+
sub persist_user {
my ($self, $c, $user) = @_;
-
+
if (
- $c->isa("Catalyst::Plugin::Session")
+ $c->can('session')
and $self->config->{'use_session'}
- and $user->supports("session")
+ and $user->supports("session")
) {
$c->session->{__user_realm} = $self->name;
-
+
# we want to ask the store for a user prepared for the session.
# but older modules split this functionality between the user and the
# store. We try the store first. If not, we use the old method.
sub remove_persisted_user {
my ($self, $c) = @_;
-
+
if (
- $c->isa("Catalyst::Plugin::Session")
+ $c->can('session')
and $self->config->{'use_session'}
and $c->session_is_valid
) {
delete @{ $c->session }{qw/__user __user_realm/};
- }
+ }
}
## backwards compatibility - I don't think many people wrote realms since they
sub from_session {
my ($self, $c, $frozen_user) = @_;
-
+
return $self->store->from_session($c, $frozen_user);
}
Set this to true if you wish this realm to auto-update user accounts after
authentication (most useful for remote authentication schemes).
+=item use_session
+
+Sets session usage for this particular realm - overriding the global use_sesion setting.
+
+
=back
=head1 METHODS
=head2 find_user( $authinfo, $c )
-Retrieves the user given the authentication information provided. This
+Retrieves the user given the authentication information provided. This
is most often called from the credential. The default realm class simply
-delegates this call the store object. If enabled, auto-creation and
+delegates this call the store object. If enabled, auto-creation and
auto-updating of users is also handled here.
=head2 authenticate( $c, $authinfo)
-Performs the authentication process for the current realm. The default
-realm class simply delegates this to the credential and sets
+Performs the authentication process for the current realm. The default
+realm class simply delegates this to the credential and sets
the authenticated user on success. Returns the authenticated user object;
-=head2 save_user_in_session($c, $user)
+=head1 USER PERSISTENCE
-Used to save the user in a session. Saves $user in the current session,
-marked as originating in the current realm. Calls $store->for_session() by
-default. If for_session is not available in the store class, will attempt
-to call $user->for_session().
+The Realm class allows complete control over the persistance of users
+between requests. By default the realm attempts to use the Catalyst
+session system to accomplish this. By overriding the methods below
+in a custom Realm class, however, you can handle user persistance in
+any way you see fit.
=head2 persist_user($c, $user)
-Takes the user data and persists it in the sessi.on
+persist_user is the entry point for saving user information between requests
+in most cases this will utilize the session. By default this uses the
+catalyst session system to store the user by calling for_session on the
+active store. The user object must be a subclass of
+Catalyst::Authentication::User. If you have updated the user object, you
+must call persist_user again to ensure that the persisted user object reflects
+your updates.
=head2 remove_persisted_user($c)
-Removes any persisted user data in the session.
+Removes any persisted user data. By default, removes the user from the session.
+
+=head2 user_is_restorable( $c )
+
+Returns whether there is a persisted user that may be restored. Returns
+a token used to restore the user. With the default session persistance
+it returns the raw frozen user information.
=head2 restore_user($c, [$frozen_user])
-Restores the user from parameter, or the session by default.
+Restores the user from the given frozen_user parameter, or if not provided,
+using the response from $self->user_is_restorable(); Uses $self->from_session()
+to decode the frozen user.
-=head2 user_is_restorable( $c )
+=head2 failed_user_restore($c)
-Predicate to tell you if the current session has restorable user data.
+If there is a session to restore, but the restore fails for any reason then this method
+is called. This method supplied just removes the persisted user, but can be overridden
+if required to have more complex logic (e.g. finding a the user by their 'old' username).
=head2 from_session($c, $frozenuser )
-Triggers restoring of the user from data in the session. The default realm
-class simply delegates the call to $store->from_session($c, $frozenuser);
+Decodes the frozenuser information provided and returns an instantiated
+user object. By default, this call is delegated to $store->from_session().
-=cut
+=head2 save_user_in_session($c, $user)
+
+DEPRECATED. Use persist_user instead. (this simply calls persist_user)
+=cut