d3fc5f998a
* remove cache, cache setup is not easy, todays servers do not really * need it anymore * add prototypes and fix parameter issues * suppress redefinition
372 lines
8.9 KiB
Perl
372 lines
8.9 KiB
Perl
package auth;
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use strict;
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use warnings;
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no warnings 'redefine';
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use CGI::Simple();
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use CGI::Session qw(-ip-match);
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use CGI::Cookie();
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#$CGI::Session::IP_MATCH=1;
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use Data::Dumper;
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use Authen::Passphrase::BlowfishCrypt();
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use time();
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use base 'Exporter';
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our @EXPORT_OK = qw(get_user login logout crypt_password);
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my $defaultExpiration = 60;
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my $tmp_dir = '/var/tmp/calcms-session';
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my $debug = 0;
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sub debug;
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#TODO: remove CGI
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sub get_user($$$) {
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my $config = shift;
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my $params = shift;
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my $cgi = shift;
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debug("get_user") if $debug;
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# login or logout on action
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if ( defined $params->{authAction} ) {
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if ( $params->{authAction} eq 'login' ) {
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my $user = login( $config, $params->{user}, $params->{password} );
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$cgi->delete( 'user', 'password', 'uri', 'authAction' ) if defined $cgi;
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return $user;
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} elsif ( $params->{authAction} eq 'logout' ) {
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$cgi = new CGI::Simple() unless defined $cgi;
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logout($cgi);
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$cgi->delete( 'user', 'password', 'uri', 'authAction' );
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return undef;
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}
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}
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# read session id from cookie
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my $session_id = read_cookie();
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# login if no cookie found
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return show_login_form( $params->{user}, 'Please login' ) unless defined $session_id;
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# read session
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my $session = read_session($session_id);
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# login if user not found
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return show_login_form( $params->{user}, 'unknown User' ) unless defined $session;
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$params->{user} = $session->{user};
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$params->{expires} = $session->{expires};
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debug( $params->{expires} );
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return $session->{user}, $session->{expires};
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}
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sub crypt_password($) {
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my $password = shift;
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my $ppr = Authen::Passphrase::BlowfishCrypt->new(
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cost => 8,
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salt_random => 1,
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passphrase => $password
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);
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return {
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salt => $ppr->salt_base64,
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crypt => $ppr->as_crypt
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};
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}
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sub login($$$) {
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my $config = shift;
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my $user = shift;
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my $password = shift;
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debug("login") if $debug;
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#print STDERR "login $user $password\n";
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my $result = authenticate( $config, $user, $password );
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#print STDERR Dumper($result);
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return show_login_form( $user, 'Could not authenticate you' ) unless defined $result;
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return unless defined $result->{login} eq '1';
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my $timeout = $result->{timeout} || $defaultExpiration;
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$timeout = '+' . $timeout . 'm';
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my $session_id = create_session( $user, $password, $timeout );
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return $user if create_cookie( $session_id, $timeout );
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return undef;
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}
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#TODO: remove cgi
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sub logout($) {
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my $cgi = shift;
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my $session_id = read_cookie();
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debug("logout") if $debug;
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unless ( delete_session($session_id) ) {
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return show_login_form( 'Cant delete session', 'logged out' );
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}
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unless ( delete_cookie($cgi) ) {
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return show_login_form( 'Cant remove cookie', 'logged out' );
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}
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my $uri = $ENV{HTTP_REFERER} || '';
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$uri =~ s/authAction=logout//g;
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print $cgi->redirect($uri);
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return;
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}
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#read and write data from browser, http://perldoc.perl.org/CGI/Cookie.html
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sub create_cookie($$) {
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my $session_id = shift;
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my $timeout = shift;
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my $cookie = CGI::Cookie->new(
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-name => 'sessionID',
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-value => $session_id,
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-expires => $timeout,
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-secure => 1
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);
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print "Set-Cookie: ", $cookie->as_string, "\n";
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print STDERR "#Set-Cookie: ", $cookie->as_string, "\n";
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return 1;
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}
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sub read_cookie() {
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debug("read_cookie") if $debug;
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my %cookie = CGI::Cookie->fetch;
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debug( "cookies: " . Dumper( \%cookie ) ) if $debug;
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my $cookie = $cookie{'sessionID'};
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debug( "cookie: " . $cookie ) if $debug;
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return undef unless defined $cookie;
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my $session_id = $cookie->value || undef;
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debug( "sid: " . $session_id ) if $debug;
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return $session_id;
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}
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#TODO: remove CGI
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sub delete_cookie($) {
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my $cgi = shift;
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debug("delete_cookie") if $debug;
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my $cookie = $cgi->cookie(
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-name => 'sessionID',
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-value => '',
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-expires => '+1s'
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);
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print $cgi->header( -cookie => $cookie );
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return 1;
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}
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# read and write server-side session data
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# expiration is in seconds
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sub create_session ($$$) {
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my $user = shift;
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my $password = shift;
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my $expiration = shift;
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debug("create_session") if $debug;
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mkdir $tmp_dir unless -e $tmp_dir;
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my $session = CGI::Session->new( undef, undef, { Directory => $tmp_dir } );
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$session->expire($expiration);
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$session->param( "user", $user );
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$session->param( "pid", $$ );
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return $session->id();
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}
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sub read_session($) {
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my $session_id = shift;
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debug("read_session") if $debug;
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return undef unless defined $session_id;
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debug("read_session2") if $debug;
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my $session = CGI::Session->new( undef, $session_id, { Directory => $tmp_dir } );
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return undef unless defined $session;
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debug("read_session3") if $debug;
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my $user = $session->param("user") || undef;
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return undef unless defined $user;
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my $expires = time::time_to_datetime( $session->param("_SESSION_ATIME") + $session->param("_SESSION_ETIME") );
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return {
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user => $user,
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expires => $expires
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};
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}
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sub delete_session($) {
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my $session_id = shift;
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debug("delete_session") if $debug;
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return undef unless ( defined $session_id );
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my $session = CGI::Session->new( undef, $session_id, { Directory => $tmp_dir } );
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$session->delete();
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return 1;
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}
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#check user authentication
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sub authenticate($$$) {
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my $config = shift;
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my $user = shift;
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my $password = shift;
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$config->{access}->{write} = 0;
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my $dbh = db::connect($config);
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my $query = qq{
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select *
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from calcms_users
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where name=?
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};
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my $bind_values = [$user];
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my $users = db::get( $dbh, $query, $bind_values );
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if ( scalar(@$users) != 1 ) {
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print STDERR "auth: did not find user '$user'\n";
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return undef;
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}
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my $salt = $users->[0]->{salt};
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my $ppr = Authen::Passphrase::BlowfishCrypt->from_crypt( $users->[0]->{pass}, $users->[0]->{salt} );
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return undef unless $ppr->match($password);
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if ( $users->[0]->{disabled} == 1 ) {
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print STDERR "user '$user' is disabled\n";
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return undef;
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}
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# timeout in seconds
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my $timeout = $users->[0]->{session_timeout} || 120;
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$timeout = 60 if $timeout < 60;
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return {
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timeout => $timeout,
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login => 1
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};
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}
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sub show_login_form ($$) {
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my $user = shift || '';
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my $uri = $ENV{HTTP_REFERER} || '';
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my $message = shift || '';
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my $requestReset = '';
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if ( ( $user ne '' ) && ( $message ne '' ) ) {
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$requestReset = qq{
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<a href="requestPassword.cgi?user=$user">forgotten</a>
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};
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}
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debug("show_login_form") if $debug;
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print qq{Content-type:text/html
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<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<style type="text/css">
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*{
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font-family:Roboto,sans-serif;
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margin:0;
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padding:0;
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border:0;
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}
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html,body{
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height: 100%;
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}
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body{
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display: table;
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margin: 0 auto;
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}
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input, .row, .field{
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padding:0.5rem;
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}
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.container{
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height: 100%;
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display: table-cell;
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vertical-align: middle;
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}
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input{
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border:0;
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border-bottom: 1px solid #39a1f4;
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margin-right:1rem;
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}
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#login_form{
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background:#ddd;
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box-shadow: 6px 6px 6px #ccc;
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margin:1rem;
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padding:1rem;
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text-align:center;
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}
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#login_form .field{
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width:8rem;
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float:left;
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}
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#login_form .message{
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color:white;
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background:#666;
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text-align:left;
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font-weight:bold;
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padding:1rem;
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margin:-1rem;
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margin-bottom:0;
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}
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input.button{
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padding:1rem;
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color:#fff;
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background:#39a1f4;
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border:0;
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font-weight:bold;
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}
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</style>
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</head>
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<body>
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<div class="container">
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<div id="login_form">
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<div class="message">$message</div><br/>
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<form method="post">
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<div class="row">
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<div class="field">user</div>
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<input name="user" value="$user"><br/>
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</div>
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<div class="row">
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<div class="field">password</div>
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<input type="password" name="password"><br/>
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</div>
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<div class="row">
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<input class="button" type="submit" name="authAction" value="login">
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<input class="button" type="submit" name="authAction" value="logout">
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</div>
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<input type="hidden" name="uri" value="$uri">
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</form>
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$requestReset
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</div>
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</container>
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</body>
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</html>
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};
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return undef;
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}
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sub debug ($) {
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my $message = shift;
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print STDERR "$message\n" if $debug > 0;
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return;
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}
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#do not delete last line!
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1;
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