allow users to change their mail address0.19

Closes #6

4 files changed, 184 insertions, 6 deletions

diff --git a/lib/Travelynx.pm b/lib/Travelynx.pm
index 01515e9..d828f84 100755
--- a/lib/Travelynx.pm
+++ b/lib/Travelynx.pm
@@ -801,6 +801,57 @@ sub startup {
 	);
 
 	$self->helper(
+		'mark_for_mail_change' => sub {
+			my ( $self, $db, $uid, $email, $token ) = @_;
+
+			$db->insert(
+				'pending_mails',
+				{
+					user_id => $uid,
+					email   => $email,
+					token   => $token,
+					requested_at =>
+					  DateTime->now( time_zone => 'Europe/Berlin' )
+				},
+				{
+					on_conflict => \
+'(user_id) do update set email = EXCLUDED.email, token = EXCLUDED.token, requested_at = EXCLUDED.requested_at'
+				},
+			);
+		}
+	);
+
+	$self->helper(
+		'change_mail_with_token' => sub {
+			my ( $self, $uid, $token ) = @_;
+
+			my $db = $self->pg->db;
+			my $tx = $db->begin;
+
+			my $res_h = $db->select(
+				'pending_mails',
+				['email'],
+				{
+					user_id => $uid,
+					token   => $token
+				}
+			)->hash;
+
+			if ($res_h) {
+				$db->update(
+					'users',
+					{ email => $res_h->{email} },
+					{ id    => $uid }
+				);
+				$db->delete( 'pending_mails', { user_id => $uid } );
+				$tx->commit;
+				return 1;
+			}
+			return;
+		}
+	);
+
+	$self->helper(
 		'remove_password_token' => sub {
 			my ( $self, $uid, $token ) = @_;
 
@@ -1004,7 +1055,7 @@ sub startup {
 			}
 
 			$count = $self->pg->db->select(
-				'pending_mails',
+				'mail_blacklist',
 				'count(*) as count',
 				{
 					email     => $mail,
@@ -1638,6 +1689,7 @@ sub startup {
 	$authed_r->get('/ajax/status_card.html')->to('traveling#status_card');
 	$authed_r->get('/cancelled')->to('traveling#cancelled');
 	$authed_r->get('/change_password')->to('account#password_form');
+	$authed_r->get('/change_mail')->to('account#change_mail');
 	$authed_r->get('/export.json')->to('account#json_export');
 	$authed_r->get('/history.json')->to('traveling#json_history');
 	$authed_r->get('/history')->to('traveling#history');
@@ -1646,9 +1698,11 @@ sub startup {
 	$authed_r->get('/journey/add')->to('traveling#add_journey_form');
 	$authed_r->get('/journey/:id')->to('traveling#journey_details');
 	$authed_r->get('/s/*station')->to('traveling#station');
+	$authed_r->get('/confirm_mail/:token')->to('account#confirm_mail');
 	$authed_r->post('/journey/add')->to('traveling#add_journey_form');
 	$authed_r->post('/journey/edit')->to('traveling#edit_journey');
 	$authed_r->post('/change_password')->to('account#change_password');
+	$authed_r->post('/change_mail')->to('account#change_mail');
 	$authed_r->post('/delete')->to('account#delete');
 	$authed_r->post('/logout')->to('account#do_logout');
 	$authed_r->post('/set_token')->to('api#set_token');
diff --git a/lib/Travelynx/Command/database.pm b/lib/Travelynx/Command/database.pm
index 62a470c..be5db72 100644
--- a/lib/Travelynx/Command/database.pm
+++ b/lib/Travelynx/Command/database.pm
@@ -378,7 +378,7 @@ my @migrations = (
 	},
 
 	# v6 -> v7
-	# Add password_reset table to store data about pending password resets
+	# Add pending_passwords table to store data about pending password resets
 	sub {
 		my ($db) = @_;
 		$db->query(
@@ -393,6 +393,25 @@ my @migrations = (
 			}
 		);
 	},
+
+	# v7 -> v8
+	# Add pending_mails table to store data about pending mail changes
+	sub {
+		my ($db) = @_;
+		$db->query(
+			qq{
+				alter table pending_mails rename to mail_blacklist;
+				create table pending_mails (
+					user_id integer not null references users (id) primary key,
+					email varchar(256) not null,
+					token varchar(80) not null,
+					requested_at timestamptz not null
+				);
+				comment on table pending_mails is 'Verification tokens for mail address changes';
+				update schema_version set version = 8;
+			}
+		);
+	},
 );
 
 sub setup_db {
diff --git a/lib/Travelynx/Command/maintenance.pm b/lib/Travelynx/Command/maintenance.pm
index 45969b3..2030705 100644
--- a/lib/Travelynx/Command/maintenance.pm
+++ b/lib/Travelynx/Command/maintenance.pm
@@ -34,13 +34,13 @@ sub run {
 		);
 
 		my $pending
-		  = $db->select( 'pending_mails', ['num_tries'], { email => $mail } );
+		  = $db->select( 'mail_blacklist', ['num_tries'], { email => $mail } );
 		my $pending_h = $pending->hash;
 
 		if ($pending_h) {
 			my $num_tries = $pending_h->{num_tries} + 1;
 			$db->update(
-				'pending_mails',
+				'mail_blacklist',
 				{
 					num_tries => $num_tries,
 					last_try  => $reg_date
@@ -50,7 +50,7 @@ sub run {
 		}
 		else {
 			$db->insert(
-				'pending_mails',
+				'mail_blacklist',
 				{
 					email     => $mail,
 					num_tries => 1,
@@ -69,6 +69,13 @@ sub run {
 		printf( "Pruned %d pending password reset(s)\n", $rows );
 	}
 
+	$res = $db->delete( 'pending_mails',
+		{ requested_at => { '<', $verification_deadline } } );
+
+	if ( my $rows = $res->rows ) {
+		printf( "Pruned %d pending mail change(s)\n", $rows );
+	}
+
 	my $to_delete = $db->select( 'users', ['id'],
 		{ deletion_requested => { '<', $deletion_deadline } } );
 	my @uids_to_delete = $to_delete->arrays->map( sub { shift->[0] } )->each;
diff --git a/lib/Travelynx/Controller/Account.pm b/lib/Travelynx/Controller/Account.pm
index 259fb9e..962a33a 100644
--- a/lib/Travelynx/Controller/Account.pm
+++ b/lib/Travelynx/Controller/Account.pm
@@ -211,6 +211,88 @@ sub do_logout {
 	$self->redirect_to('/login');
 }
 
+sub change_mail {
+	my ($self) = @_;
+
+	my $action   = $self->req->param('action');
+	my $password = $self->req->param('password');
+	my $email    = $self->req->param('email');
+
+	if ( $action and $action eq 'update_mail' ) {
+		if ( $self->validation->csrf_protect->has_error('csrf_token') ) {
+			$self->render(
+				'change_mail',
+				invalid => 'csrf',
+			);
+			return;
+		}
+
+		if ( not length($email) ) {
+			$self->render( 'change_mail', invalid => 'mail_empty' );
+			return;
+		}
+
+		if (
+			not $self->authenticate(
+				$self->current_user->{name},
+				$self->param('password')
+			)
+		  )
+		{
+			$self->render( 'change_mail', invalid => 'password' );
+			return;
+		}
+
+		my $token = make_token();
+		my $name  = $self->current_user->{name};
+		my $db    = $self->pg->db;
+		my $tx    = $db->begin;
+
+		$self->mark_for_mail_change( $db, $self->current_user->{id},
+			$email, $token );
+
+		my $ip   = $self->req->headers->header('X-Forwarded-For');
+		my $ua   = $self->req->headers->user_agent;
+		my $date = DateTime->now( time_zone => 'Europe/Berlin' )
+		  ->strftime('%d.%m.%Y %H:%M:%S %z');
+
+		# In case Mojolicious is not running behind a reverse proxy
+		$ip
+		  //= sprintf( '%s:%s', $self->tx->remote_address,
+			$self->tx->remote_port );
+		my $confirm_url
+		  = $self->url_for('confirm_mail')->to_abs->scheme('https');
+		my $imprint_url = $self->url_for('impressum')->to_abs->scheme('https');
+
+		my $body = "Hallo ${name},\n\n";
+		$body .= "Bitte bestätige unter <${confirm_url}/${token}>,\n";
+		$body .= "dass du mit dieser Adresse E-Mail empfangen kannst.\n\n";
+		$body
+		  .= "Du erhältst diese Mail, da eine Änderung der deinem travelynx-Account\n";
+		$body .= "zugeordneten Mail-Adresse beantragt wurde.\n\n";
+		$body .= "Daten zur Anfrage:\n";
+		$body .= " * Datum: ${date}\n";
+		$body .= " * Client: ${ip}\n";
+		$body .= " * UserAgent: ${ua}\n\n\n";
+		$body .= "Impressum: ${imprint_url}\n";
+
+		my $success
+		  = $self->sendmail->custom( $email,
+			'travelynx: Mail-Adresse bestätigen', $body );
+
+		if ($success) {
+			$tx->commit;
+			$self->render( 'change_mail', success => 1 );
+		}
+		else {
+			$self->render( 'change_mail', invalid => 'sendmail' );
+		}
+	}
+	else {
+		$self->render('change_mail');
+	}
+}
+
 sub password_form {
 	my ($self) = @_;
 
@@ -252,6 +334,7 @@ sub change_password {
 	my $pw_hash = hash_password($password);
 	$self->set_user_password( $self->current_user->{id}, $pw_hash );
 
+	$self->flash( success => 'password' );
 	$self->redirect_to('account');
 
 	my $user  = $self->current_user->{name};
@@ -361,7 +444,7 @@ sub request_password_reset {
 			return;
 		}
 		if ( not $self->verify_password_token( $id, $token ) ) {
-			$self->render( 'recover_password', invalid => 'recovery token' );
+			$self->render( 'recover_password', invalid => 'change token' );
 			return;
 		}
 		if ( $password ne $password2 ) {
@@ -384,6 +467,7 @@ sub request_password_reset {
 				invalid => 'Authentication failure – WTF?' );
 		}
 
+		$self->flash( success => 'password' );
 		$self->redirect_to('account');
 
 		$self->remove_password_token( $id, $token );
@@ -433,6 +517,20 @@ sub recover_password {
 	}
 }
 
+sub confirm_mail {
+	my ($self) = @_;
+	my $id     = $self->current_user->{id};
+	my $token  = $self->stash('token');
+
+	if ( $self->change_mail_with_token( $id, $token ) ) {
+		$self->flash( success => 'mail' );
+		$self->redirect_to('account');
+	}
+	else {
+		$self->render( 'change_mail', invalid => 'change token' );
+	}
+}
+
 sub account {
 	my ($self) = @_;