280 lines
7.9 KiB
Perl
280 lines
7.9 KiB
Perl
package App::Netdisco::Web::Auth::Provider::DBIC;
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use strict;
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use warnings;
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use base 'Dancer::Plugin::Auth::Extensible::Provider::Base';
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# with thanks to yanick's patch at
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# https://github.com/bigpresh/Dancer-Plugin-Auth-Extensible/pull/24
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use Dancer ':syntax';
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use Dancer::Plugin::DBIC;
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use Dancer::Plugin::Passphrase;
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use Digest::MD5;
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use Net::LDAP;
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use Authen::Radius;
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use Authen::TacacsPlus;
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use Try::Tiny;
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sub authenticate_user {
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my ($self, $username, $password) = @_;
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return unless defined $username;
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my $user = $self->get_user_details($username) or return;
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return unless $user->in_storage;
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return $self->match_password($password, $user);
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}
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sub get_user_details {
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my ($self, $username) = @_;
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my $settings = $self->realm_settings;
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my $database = schema($settings->{schema_name})
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or die "No database connection";
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my $users_table = $settings->{users_resultset} || 'User';
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my $username_column = $settings->{users_username_column} || 'username';
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my $user = try {
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$database->resultset($users_table)->find({
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$username_column => { -ilike => quotemeta($username) },
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});
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};
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# each of these settings permits no user in the database
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# so create a pseudo user entry instead
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if (not $user and not setting('validate_remote_user')
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and (setting('trust_remote_user')
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or setting('trust_x_remote_user')
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or setting('no_auth'))) {
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$user = $database->resultset($users_table)
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->new_result({username => $username});
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}
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return $user;
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}
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sub validate_api_token {
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my ($self, $token) = @_;
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return unless defined $token;
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my $settings = $self->realm_settings;
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my $database = schema($settings->{schema_name})
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or die "No database connection";
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my $users_table = $settings->{users_resultset} || 'User';
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my $token_column = $settings->{users_token_column} || 'token';
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$token =~ s/^Apikey //i; # should be there but swagger-ui doesn't add it
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my $user = try {
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$database->resultset($users_table)->find({ $token_column => $token });
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};
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return $user->username
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if $user and $user->in_storage and $user->token_from
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and $user->token_from > (time - setting('api_token_lifetime'));
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return undef;
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}
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sub get_user_roles {
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my ($self, $username) = @_;
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return unless defined $username;
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my $settings = $self->realm_settings;
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my $database = schema($settings->{schema_name})
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or die "No database connection";
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# Get details of the user first; both to check they exist, and so we have
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# their ID to use.
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my $user = $self->get_user_details($username)
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or return;
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my $roles = $settings->{roles_relationship} || 'roles';
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my $role_column = $settings->{role_column} || 'role';
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return [ try {
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$user->$roles->search({}, { bind => [setting('api_token_lifetime')] })
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->get_column( $role_column )->all;
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} ];
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}
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sub match_password {
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my($self, $password, $user) = @_;
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return unless $user;
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my $settings = $self->realm_settings;
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my $username_column = $settings->{users_username_column} || 'username';
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my $pwmatch_result = 0;
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my $username = $user->$username_column;
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if ($user->ldap) {
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$pwmatch_result = $self->match_with_ldap($password, $username);
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}
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elsif ($user->radius) {
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$pwmatch_result = $self->match_with_radius($password, $username);
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}
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elsif ($user->tacacs) {
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$pwmatch_result = $self->match_with_tacacs($password, $username);
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}
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else {
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$pwmatch_result = $self->match_with_local_pass($password, $user);
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}
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return $pwmatch_result;
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}
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sub match_with_local_pass {
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my($self, $password, $user) = @_;
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my $settings = $self->realm_settings;
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my $password_column = $settings->{users_password_column} || 'password';
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return unless $password and $user->$password_column;
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if ($user->$password_column !~ m/^{[A-Z]+}/) {
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my $sum = Digest::MD5::md5_hex($password);
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if ($sum eq $user->$password_column) {
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if (setting('safe_password_store')) {
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# upgrade password if successful, and permitted
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$user->update({password => passphrase($password)->generate});
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}
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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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else {
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return passphrase($password)->matches($user->$password_column);
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}
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}
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sub match_with_ldap {
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my($self, $pass, $user) = @_;
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return unless setting('ldap') and ref {} eq ref setting('ldap');
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my $conf = setting('ldap');
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my $ldapuser = $conf->{user_string};
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$ldapuser =~ s/\%USER\%?/$user/egi;
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# If we can bind as anonymous or proxy user,
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# search for user's distinguished name
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if ($conf->{proxy_user}) {
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my $user = $conf->{proxy_user};
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my $pass = $conf->{proxy_pass};
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my $attrs = ['distinguishedName'];
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my $result = _ldap_search($ldapuser, $attrs, $user, $pass);
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$ldapuser = $result->[0] if ($result->[0]);
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}
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# otherwise, if we can't search and aren't using AD and then construct DN
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# by appending base
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elsif ($ldapuser =~ m/=/) {
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$ldapuser = "$ldapuser,$conf->{base}";
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}
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foreach my $server (@{$conf->{servers}}) {
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my $opts = $conf->{opts} || {};
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my $ldap = Net::LDAP->new($server, %$opts) or next;
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my $msg = undef;
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if ($conf->{tls_opts} ) {
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$msg = $ldap->start_tls(%{$conf->{tls_opts}});
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}
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$msg = $ldap->bind($ldapuser, password => $pass);
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$ldap->unbind(); # take down session
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return 1 unless $msg->code();
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}
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return undef;
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}
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sub _ldap_search {
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my ($filter, $attrs, $user, $pass) = @_;
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my $conf = setting('ldap');
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return undef unless defined($filter);
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return undef if (defined $attrs and ref [] ne ref $attrs);
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foreach my $server (@{$conf->{servers}}) {
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my $opts = $conf->{opts} || {};
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my $ldap = Net::LDAP->new($server, %$opts) or next;
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my $msg = undef;
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if ($conf->{tls_opts}) {
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$msg = $ldap->start_tls(%{$conf->{tls_opts}});
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}
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if ( $user and $user ne 'anonymous' ) {
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$msg = $ldap->bind($user, password => $pass);
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}
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else {
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$msg = $ldap->bind();
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}
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$msg = $ldap->search(
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base => $conf->{base},
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filter => "($filter)",
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attrs => $attrs,
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);
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$ldap->unbind(); # take down session
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my $entries = [$msg->entries];
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return $entries unless $msg->code();
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}
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return undef;
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}
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sub match_with_radius {
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my($self, $pass, $user) = @_;
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return unless setting('radius') and ref [] eq ref setting('radius');
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my $conf = setting('radius');
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my $radius = Authen::Radius->new(@$conf);
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# my $dict_dir = Path::Class::Dir->new( dist_dir('App-Netdisco') )
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# ->subdir('radius_dictionaries')->stringify;
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Authen::Radius->load_dictionary(); # put $dict_dir in here once it's useful
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$radius->add_attributes(
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{ Name => 'User-Name', Value => $user },
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{ Name => 'User-Password', Value => $pass },
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{ Name => 'h323-return-code', Value => '0' }, # Cisco AV pair
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{ Name => 'Digest-Attributes', Value => { Method => 'REGISTER' } }
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);
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$radius->send_packet(ACCESS_REQUEST);
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my $type = $radius->recv_packet();
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my $radius_return = ($type eq ACCESS_ACCEPT) ? 1 : 0;
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return $radius_return;
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}
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sub match_with_tacacs {
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my($self, $pass, $user) = @_;
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return unless setting('tacacs') and ref [] eq ref setting('tacacs');
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my $conf = setting('tacacs');
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my $tacacs = new Authen::TacacsPlus(@$conf);
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if (not $tacacs) {
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debug sprintf('auth error: Authen::TacacsPlus: %s', Authen::TacacsPlus::errmsg());
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return undef;
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}
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my $tacacs_return = $tacacs->authen($user,$pass);
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if (not $tacacs_return) {
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debug sprintf('error: Authen::TacacsPlus: %s', Authen::TacacsPlus::errmsg());
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}
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$tacacs->close();
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return $tacacs_return;
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}
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1;
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