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266 lines
8.0 KiB
266 lines
8.0 KiB
##@file
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# Functions shared in Safe jail
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##@class
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# Functions shared in Safe jail
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package Lemonldap::NG::Common::Safelib;
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use strict;
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use Encode;
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use MIME::Base64;
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use Lemonldap::NG::Common::IPv6;
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use JSON::XS;
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use Date::Parse;
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our $VERSION = '2.0.12';
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# Set here all the names of functions that must be available in Safe objects.
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# Not that only functions, not methods, can be written here
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our $functions =
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[
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qw(&checkLogonHours &date &dateToTime &checkDate &basic &unicode2iso &iso2unicode &groupMatch &isInNet6 &varIsInUri &has2f)
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];
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## @function boolean checkLogonHours(string logon_hours, string syntax, string time_correction, boolean default_access)
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# Function to check logon hours
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# @param $logon_hours string representing allowed logon hours (GMT)
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# @param $syntax optional hexadecimal (default) or octetstring
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# @param $time_correction optional hours to add or to subtract
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# @param $default_access optional what result to return for users without logons hours
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# @return 1 if access allowed, 0 else
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sub checkLogonHours {
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my ( $logon_hours, $syntax, $time_correction, $default_access ) = @_;
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# Active Directory - logonHours: $attr_src_syntax = octetstring
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# Samba - sambaLogonHours: ???
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# LL::NG - ssoLogonHours: $attr_src_syntax = hexadecimal
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$syntax ||= "hexadecimal";
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# Default access if no value
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$default_access ||= "0";
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return $default_access unless $logon_hours;
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# Get the base2 value of logon_hours
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# Each byte represent an hour of the week
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# Begin with sunday at 0h00
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my $base2_logon_hours;
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if ( $syntax eq "octetstring" ) {
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$base2_logon_hours = unpack( "B*", $logon_hours );
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}
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if ( $syntax eq "hexadecimal" ) {
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# Remove white spaces
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$logon_hours =~ s/ //g;
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$base2_logon_hours = unpack( "B*", pack( "H*", $logon_hours ) );
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}
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# Get the present day and hour
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my ( $sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst ) =
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gmtime(time);
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# Get the hour position
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my $hourpos = $wday * 24 + $hour;
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# Use time_correction
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if ($time_correction) {
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my ( $sign, $time ) = ( $time_correction =~ /([+|-]?)(\d+)/ );
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if ( $sign =~ /-/ ) { $hourpos -= $time; }
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else { $hourpos += $time; }
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}
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# Get the corresponding byte
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return substr( $base2_logon_hours, $hourpos, 1 );
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}
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## @function integer listMatch
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# Test if a value is found in a collection
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# @param $list Can be a hash, array or string including the separator
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# @param $value string The value to search for
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# @param $ignorecase boolean Be case insensitive
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# @return 1 if the value was found, 0 else
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# NOTE: this function is not exported directly in this module because we don't
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# want the usr to have to worry about separator. Is is wrapped in a closure in
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# Jail.pm
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sub listMatch {
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my ( $sep, $list, $value, $ignorecase ) = @_;
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my $flags = $ignorecase ? 'i' : '';
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my @a;
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if ( ref($list) eq "ARRAY" ) {
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@a = @{$list};
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}
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elsif ( ref($list) eq "HASH" ) {
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@a = keys %{$list};
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}
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else {
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@a = split $sep, $list;
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}
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if ( grep /(?$flags)^\Q$value\E$/, @a ) {
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return 1;
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}
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else {
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return 0;
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}
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}
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## @function integer date
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# Get current local date
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# @param $gmt optional boolean To return GMT date (default is local date)
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# @return current date on format YYYYMMDDHHMMSS
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sub date {
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my $gmt = shift;
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my ( $sec, $min, $hour, $mday, $mon, $year ) = $gmt ? gmtime : localtime;
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$year += 1900;
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$mon += 1;
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$mon = "0" . $mon if ( $mon < 10 );
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$mday = "0" . $mday if ( $mday < 10 );
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$hour = "0" . $hour if ( $hour < 10 );
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$min = "0" . $min if ( $min < 10 );
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$sec = "0" . $sec if ( $sec < 10 );
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return $year . $mon . $mday . $hour . $min . $sec;
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}
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## @function integer dateToTime(string date)
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# Converts a LDAP date into epoch time or returns undef upon failure.
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# @param $date string Date in YYYYMMDDHHMMSS[+/-0000] format. It may contain a differential timezone, otherwise default TZ is GMT
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# @return Date converted to time
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sub dateToTime {
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my $date = shift;
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return undef unless ( $date );
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# Parse date
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my ( $year, $month, $day, $hour, $min, $sec, $zone ) = ( $date =~ /(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})([-+\w]*)/ );
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# Convert date to epoch time with GMT as default timezone if date contains none
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return str2time( $year . "-" . $month . "-" . $day . "T" . $hour . ":" . $min . ":" . $sec . $zone, "GMT" );
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}
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## @function boolean checkDate(string start, string end, boolean default_access)
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# Function to check a date
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# @param $start string Start date in YYYYMMDDHHMMSS[+/-0000] format. It may contain a differential timezone, otherwise default TZ is GMT
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# @param $end string End date in YYYYMMDDHHMMSS[+/-0000] format. It may contain a differential timezone, otherwise default TZ is GMT
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# @param $default_access optional what result to return for users without start and end dates
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# @return 1 if access allowed, 0 else
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sub checkDate {
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my ( $start, $end, $default_access ) = @_;
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# Default access if no value
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$default_access ||= "0";
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return $default_access unless ( $start or $end );
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# If no start, set start to 01 01 1970
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$start ||= "19700101000000";
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# If no end, set end to the end of the world
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$end ||= "99991231235959";
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# Convert dates to epoch time
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my $starttime = &dateToTime($start);
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my $endtime = &dateToTime($end);
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# Convert current GMT date to epoch time
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my $datetime = &dateToTime(&date(1));
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return 1 if ( ( $datetime >= $starttime ) and ( $datetime <= $endtime ) );
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return 0;
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}
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## @function string basic(string login, string password)
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# Return string that can be used for HTTP-BASIC authentication
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# @param login User login
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# @param password User password
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# @return Authorization header content
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sub basic {
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my ( $login, $password ) = @_;
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# UTF-8 strings should be ISO encoded
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$login = &unicode2iso($login);
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$password = &unicode2iso($password);
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return "Basic " . encode_base64( $login . ":" . $password, '' );
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}
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## @function string unicode2iso(string string)
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# Convert UTF-8 in ISO-8859-1
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# @param string UTF-8 string
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# @return ISO string
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sub unicode2iso {
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my ($string) = @_;
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return encode( "iso-8859-1", decode( "utf-8", $string ) );
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}
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## @function string iso2unicode(string string)
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# Convert ISO-8859-1 in UTF-8
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# @param string ISO string
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# @return UTF-8 string
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sub iso2unicode {
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my ($string) = @_;
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return encode( "utf-8", decode( "iso-8859-1", $string ) );
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}
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## @function int groupMatch(hashref groups, string attribute, string value)
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# Check in hGroups structure if a group attribute contains a value
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# @param groups The $hGroups variable
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# @param attribute Name of the attribute
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# @param value Value to check
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# @return int Number of values that match
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sub groupMatch {
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my ( $groups, $attribute, $value ) = @_;
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my $match = 0;
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foreach my $group ( keys %$groups ) {
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if ( ref( $groups->{$group}->{$attribute} ) eq "ARRAY" ) {
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foreach ( @{ $groups->{$group}->{$attribute} } ) {
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$match++ if ( $_ =~ /$value/ );
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}
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}
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else {
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$match++ if ( $groups->{$group}->{$attribute} =~ /$value/ );
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}
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}
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return $match;
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}
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sub isInNet6 {
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my ( $ip, $net ) = @_;
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$net =~ s#/(\d+)##;
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my $bits = $1;
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return net6( $ip, $bits ) eq net6( $net, $bits ) ? 1 : 0;
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}
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sub varIsInUri {
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my ( $uri, $wanteduri, $attribute, $restricted ) = @_;
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return $restricted
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? $uri =~ /$wanteduri$attribute$/o
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: $uri =~ /$wanteduri$attribute/o;
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}
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my $json = JSON::XS->new;
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sub has2f {
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my ( $session, $type ) = @_;
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return 0 unless $session->{_2fDevices};
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my $_2fDevices = eval { $json->decode( $session->{_2fDevices} ); };
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return 0 if ( $@ or ref($_2fDevices) ne "ARRAY" );
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# Empty array
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return 0 unless scalar @{$_2fDevices};
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# Array has one value and we did not specify a type, succeed
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if ($type) {
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my @found = grep { lc( $_->{type} ) eq lc($type) } @{$_2fDevices};
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return @found ? 1 : 0;
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}
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return 1;
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}
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1;
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