package Apache::Authn::Redmine; =head1 Apache::Authn::Redmine Redmine - a mod_perl module to authenticate webdav subversion users against redmine database =head1 SYNOPSIS This module allow anonymous users to browse public project and registred users to browse and commit their project. Authentication is done against the redmine database or the LDAP configured in redmine. This method is far simpler than the one with pam_* and works with all database without an hassle but you need to have apache/mod_perl on the svn server. =head1 INSTALLATION For this to automagically work, you need to have a recent reposman.rb (after r860) and if you already use reposman, read the last section to migrate. Sorry ruby users but you need some perl modules, at least mod_perl2, DBI and DBD::mysql (or the DBD driver for you database as it should work on allmost all databases). On debian/ubuntu you must do : aptitude install libapache-dbi-perl libapache2-mod-perl2 libdbd-mysql-perl If your Redmine users use LDAP authentication, you will also need Authen::Simple::LDAP (and IO::Socket::SSL if LDAPS is used): aptitude install libauthen-simple-ldap-perl libio-socket-ssl-perl =head1 CONFIGURATION ## This module has to be in your perl path ## eg: /usr/lib/perl5/Apache/Authn/Redmine.pm PerlLoadModule Apache::Authn::Redmine DAV svn SVNParentPath "/var/svn" AuthType Basic AuthName redmine Require valid-user PerlAccessHandler Apache::Authn::Redmine::access_handler PerlAuthenHandler Apache::Authn::Redmine::authen_handler ## for mysql RedmineDSN "DBI:mysql:database=databasename;host=my.db.server" ## for postgres # RedmineDSN "DBI:Pg:dbname=databasename;host=my.db.server" RedmineDbUser "redmine" RedmineDbPass "password" ## Optional where clause (fulltext search would be slow and ## database dependant). # RedmineDbWhereClause "and members.role_id IN (1,2)" ## Optional credentials cache size # RedmineCacheCredsMax 50 To be able to browse repository inside redmine, you must add something like that : DAV svn SVNParentPath "/var/svn" Order deny,allow Deny from all # only allow reading orders Allow from redmine.server.ip and you will have to use this reposman.rb command line to create repository : reposman.rb --redmine my.redmine.server --svn-dir /var/svn --owner www-data -u http://svn.server/svn-private/ =head1 REPOSITORIES NAMING A projet repository must be named with the projet identifier. In case of multiple repositories for the same project, use the project identifier and the repository identifier separated with a dot: /var/svn/foo /var/svn/foo.otherrepo =head1 MIGRATION FROM OLDER RELEASES If you use an older reposman.rb (r860 or before), you need to change rights on repositories to allow the apache user to read and write S sudo chown -R www-data /var/svn/* sudo chmod -R u+w /var/svn/* And you need to upgrade at least reposman.rb (after r860). =cut use strict; use warnings FATAL => 'all', NONFATAL => 'redefine'; use DBI; use Digest::SHA; # optional module for LDAP authentication my $CanUseLDAPAuth = eval("use Authen::Simple::LDAP; 1"); use Apache2::Module; use Apache2::Access; use Apache2::ServerRec qw(); use Apache2::RequestRec qw(); use Apache2::RequestUtil qw(); use Apache2::Const qw(:common :override :cmd_how); use APR::Pool (); use APR::Table (); # use Apache2::Directive qw(); my @directives = ( { name => 'RedmineDSN', req_override => OR_AUTHCFG, args_how => TAKE1, errmsg => 'Dsn in format used by Perl DBI. eg: "DBI:Pg:dbname=databasename;host=my.db.server"', }, { name => 'RedmineDbUser', req_override => OR_AUTHCFG, args_how => TAKE1, }, { name => 'RedmineDbPass', req_override => OR_AUTHCFG, args_how => TAKE1, }, { name => 'RedmineDbWhereClause', req_override => OR_AUTHCFG, args_how => TAKE1, }, { name => 'RedmineCacheCredsMax', req_override => OR_AUTHCFG, args_how => TAKE1, errmsg => 'RedmineCacheCredsMax must be decimal number', }, ); sub RedmineDSN { my ($self, $parms, $arg) = @_; $self->{RedmineDSN} = $arg; my $query = "SELECT hashed_password, salt, auth_source_id, permissions FROM projects, users, roles WHERE users.login=? AND projects.identifier=? AND users.status=1 AND ( roles.id IN (SELECT member_roles.role_id FROM members, member_roles WHERE members.user_id = users.id AND members.project_id = projects.id AND members.id = member_roles.member_id) OR (roles.builtin=1 AND cast(projects.is_public as CHAR) IN ('t', '1')) ) "; $self->{RedmineQuery} = trim($query); } sub RedmineDbUser { set_val('RedmineDbUser', @_); } sub RedmineDbPass { set_val('RedmineDbPass', @_); } sub RedmineDbWhereClause { my ($self, $parms, $arg) = @_; $self->{RedmineQuery} = trim($self->{RedmineQuery}.($arg ? $arg : "")." "); } sub RedmineCacheCredsMax { my ($self, $parms, $arg) = @_; if ($arg) { $self->{RedmineCachePool} = APR::Pool->new; $self->{RedmineCacheCreds} = APR::Table::make($self->{RedmineCachePool}, $arg); $self->{RedmineCacheCredsCount} = 0; $self->{RedmineCacheCredsMax} = $arg; } } sub trim { my $string = shift; $string =~ s/\s{2,}/ /g; return $string; } sub set_val { my ($key, $self, $parms, $arg) = @_; $self->{$key} = $arg; } Apache2::Module::add(__PACKAGE__, \@directives); my %read_only_methods = map { $_ => 1 } qw/GET PROPFIND REPORT OPTIONS/; sub access_handler { my $r = shift; unless ($r->some_auth_required) { $r->log_reason("No authentication has been configured"); return FORBIDDEN; } my $method = $r->method; return OK unless defined $read_only_methods{$method}; my $project_id = get_project_identifier($r); $r->set_handlers(PerlAuthenHandler => [\&OK]) if is_public_project($project_id, $r) && anonymous_role_allows_browse_repository($r); return OK } sub authen_handler { my $r = shift; my ($res, $redmine_pass) = $r->get_basic_auth_pw(); return $res unless $res == OK; if (is_member($r->user, $redmine_pass, $r)) { return OK; } else { $r->note_auth_failure(); return AUTH_REQUIRED; } } # check if authentication is forced sub is_authentication_forced { my $r = shift; my $dbh = connect_database($r); my $sth = $dbh->prepare( "SELECT value FROM settings where settings.name = 'login_required';" ); $sth->execute(); my $ret = 0; if (my @row = $sth->fetchrow_array) { if ($row[0] eq "1" || $row[0] eq "t") { $ret = 1; } } $sth->finish(); undef $sth; $dbh->disconnect(); undef $dbh; $ret; } sub is_public_project { my $project_id = shift; my $r = shift; if (is_authentication_forced($r)) { return 0; } my $dbh = connect_database($r); my $sth = $dbh->prepare( "SELECT is_public FROM projects WHERE projects.identifier = ?;" ); $sth->execute($project_id); my $ret = 0; if (my @row = $sth->fetchrow_array) { if ($row[0] eq "1" || $row[0] eq "t") { $ret = 1; } } $sth->finish(); undef $sth; $dbh->disconnect(); undef $dbh; $ret; } sub anonymous_role_allows_browse_repository { my $r = shift; my $dbh = connect_database($r); my $sth = $dbh->prepare( "SELECT permissions FROM roles WHERE builtin = 2;" ); $sth->execute(); my $ret = 0; if (my @row = $sth->fetchrow_array) { if ($row[0] =~ /:browse_repository/) { $ret = 1; } } $sth->finish(); undef $sth; $dbh->disconnect(); undef $dbh; $ret; } # perhaps we should use repository right (other read right) to check public access. # it could be faster BUT it doesn't work for the moment. # sub is_public_project_by_file { # my $project_id = shift; # my $r = shift; # my $tree = Apache2::Directive::conftree(); # my $node = $tree->lookup('Location', $r->location); # my $hash = $node->as_hash; # my $svnparentpath = $hash->{SVNParentPath}; # my $repos_path = $svnparentpath . "/" . $project_id; # return 1 if (stat($repos_path))[2] & 00007; # } sub is_member { my $redmine_user = shift; my $redmine_pass = shift; my $r = shift; my $dbh = connect_database($r); my $project_id = get_project_identifier($r); my $pass_digest = Digest::SHA::sha1_hex($redmine_pass); my $access_mode = defined $read_only_methods{$r->method} ? "R" : "W"; my $cfg = Apache2::Module::get_config(__PACKAGE__, $r->server, $r->per_dir_config); my $usrprojpass; if ($cfg->{RedmineCacheCredsMax}) { $usrprojpass = $cfg->{RedmineCacheCreds}->get($redmine_user.":".$project_id.":".$access_mode); return 1 if (defined $usrprojpass and ($usrprojpass eq $pass_digest)); } my $query = $cfg->{RedmineQuery}; my $sth = $dbh->prepare($query); $sth->execute($redmine_user, $project_id); my $ret; while (my ($hashed_password, $salt, $auth_source_id, $permissions) = $sth->fetchrow_array) { unless ($auth_source_id) { my $method = $r->method; my $salted_password = Digest::SHA::sha1_hex($salt.$pass_digest); if ($hashed_password eq $salted_password && (($access_mode eq "R" && $permissions =~ /:browse_repository/) || $permissions =~ /:commit_access/) ) { $ret = 1; last; } } elsif ($CanUseLDAPAuth) { my $sthldap = $dbh->prepare( "SELECT host,port,tls,account,account_password,base_dn,attr_login from auth_sources WHERE id = ?;" ); $sthldap->execute($auth_source_id); while (my @rowldap = $sthldap->fetchrow_array) { my $bind_as = $rowldap[3] ? $rowldap[3] : ""; my $bind_pw = $rowldap[4] ? $rowldap[4] : ""; if ($bind_as =~ m/\$login/) { # replace $login with $redmine_user and use $redmine_pass $bind_as =~ s/\$login/$redmine_user/g; $bind_pw = $redmine_pass } my $ldap = Authen::Simple::LDAP->new( host => ($rowldap[2] eq "1" || $rowldap[2] eq "t") ? "ldaps://$rowldap[0]:$rowldap[1]" : $rowldap[0], port => $rowldap[1], basedn => $rowldap[5], binddn => $bind_as, bindpw => $bind_pw, filter => "(".$rowldap[6]."=%s)" ); my $method = $r->method; $ret = 1 if ($ldap->authenticate($redmine_user, $redmine_pass) && (($access_mode eq "R" && $permissions =~ /:browse_repository/) || $permissions =~ /:commit_access/)); } $sthldap->finish(); undef $sthldap; } } $sth->finish(); undef $sth; $dbh->disconnect(); undef $dbh; if ($cfg->{RedmineCacheCredsMax} and $ret) { if (defined $usrprojpass) { $cfg->{RedmineCacheCreds}->set($redmine_user.":".$project_id.":".$access_mode, $pass_digest); } else { if ($cfg->{RedmineCacheCredsCount} < $cfg->{RedmineCacheCredsMax}) { $cfg->{RedmineCacheCreds}->set($redmine_user.":".$project_id.":".$access_mode, $pass_digest); $cfg->{RedmineCacheCredsCount}++; } else { $cfg->{RedmineCacheCreds}->clear(); $cfg->{RedmineCacheCredsCount} = 0; } } } $ret; } sub get_project_identifier { my $r = shift; my $location = $r->location; my ($identifier) = $r->uri =~ m{$location/*([^/.]+)}; $identifier; } sub connect_database { my $r = shift; my $cfg = Apache2::Module::get_config(__PACKAGE__, $r->server, $r->per_dir_config); return DBI->connect($cfg->{RedmineDSN}, $cfg->{RedmineDbUser}, $cfg->{RedmineDbPass}); } 1;