1 package Koha::REST::V1::Auth;
3 # Copyright Koha-Suomi Oy 2017
5 # This file is part of Koha.
7 # Koha is free software; you can redistribute it and/or modify it
8 # under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 3 of the License, or
10 # (at your option) any later version.
12 # Koha is distributed in the hope that it will be useful, but
13 # WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with Koha; if not, see <http://www.gnu.org/licenses>.
22 use Mojo::Base 'Mojolicious::Controller';
24 use C4::Auth qw( check_cookie_auth checkpw_internal get_session haspermission );
28 use Koha::Account::Lines;
32 use Koha::OAuthAccessTokens;
33 use Koha::Old::Checkouts;
37 use Koha::Exceptions::Authentication;
38 use Koha::Exceptions::Authorization;
41 use Module::Load::Conditional;
42 use Scalar::Util qw( blessed );
53 This subroutine is called before every request to API.
65 my $namespace = $c->req->url->to_abs->path->[2] // '';
67 my $is_public = 0; # By default routes are not public
70 if ( $namespace eq 'public' ) {
72 } elsif ( $namespace eq 'contrib' ) {
77 and !C4::Context->preference('RESTPublicAPI') )
79 Koha::Exceptions::Authorization->throw(
80 "Configuration prevents the usage of this endpoint by unprivileged users");
83 if ( $c->req->url->to_abs->path eq '/api/v1/oauth/token' ) {
84 # Requesting a token shouldn't go through the API authenticaction chain
87 elsif ( $namespace eq '' or $namespace eq '.html' ) {
91 $status = authenticate_api_request($c, { is_public => $is_public, is_plugin => $is_plugin });
95 unless (blessed($_)) {
98 json => { error => 'Something went wrong, check the logs.' }
101 if ($_->isa('Koha::Exceptions::UnderMaintenance')) {
102 return $c->render(status => 503, json => { error => $_->error });
104 elsif ($_->isa('Koha::Exceptions::Authentication::SessionExpired')) {
105 return $c->render(status => 401, json => { error => $_->error });
107 elsif ($_->isa('Koha::Exceptions::Authentication::Required')) {
108 return $c->render(status => 401, json => { error => $_->error });
110 elsif ($_->isa('Koha::Exceptions::Authentication')) {
111 return $c->render(status => 401, json => { error => $_->error });
113 elsif ($_->isa('Koha::Exceptions::BadParameter')) {
114 return $c->render(status => 400, json => $_->error );
116 elsif ($_->isa('Koha::Exceptions::Authorization::Unauthorized')) {
117 return $c->render(status => 403, json => {
119 required_permissions => $_->required_permissions,
122 elsif ($_->isa('Koha::Exceptions::Authorization')) {
123 return $c->render(status => 403, json => { error => $_->error });
125 elsif ($_->isa('Koha::Exceptions')) {
126 return $c->render(status => 500, json => { error => $_->error });
131 json => { error => 'Something went wrong, check the logs.' }
139 =head3 authenticate_api_request
141 Validates authentication and allows access if authorization is not required or
142 if authorization is required and user has required permissions to access.
146 sub authenticate_api_request {
147 my ( $c, $params ) = @_;
151 # The following supports retrieval of spec with Mojolicious::Plugin::OpenAPI@1.17 and later (first one)
152 # and older versions (second one).
153 # TODO: remove the latter 'openapi.op_spec' if minimum version is bumped to at least 1.17.
154 my $spec = $c->openapi->spec || $c->match->endpoint->pattern->defaults->{'openapi.op_spec'};
156 $c->stash_embed({ spec => $spec });
159 my $authorization = $spec->{'x-koha-authorization'};
161 my $authorization_header = $c->req->headers->authorization;
163 if ($authorization_header and $authorization_header =~ /^Bearer /) {
164 # attempt to use OAuth2 authentication
165 if ( ! Module::Load::Conditional::can_load(
166 modules => {'Net::OAuth2::AuthorizationServer' => undef} )) {
167 Koha::Exceptions::Authorization::Unauthorized->throw(
168 error => 'Authentication failure.'
172 require Net::OAuth2::AuthorizationServer;
175 my $server = Net::OAuth2::AuthorizationServer->new;
176 my $grant = $server->client_credentials_grant(Koha::OAuth::config);
177 my ($type, $token) = split / /, $authorization_header;
178 my ($valid_token, $error) = $grant->verify_access_token(
179 access_token => $token,
183 my $patron_id = Koha::ApiKeys->find( $valid_token->{client_id} )->patron_id;
184 $user = Koha::Patrons->find($patron_id);
187 # If we have "Authorization: Bearer" header and oauth authentication
188 # failed, do not try other authentication means
189 Koha::Exceptions::Authentication::Required->throw(
190 error => 'Authentication failure.'
194 elsif ( $authorization_header and $authorization_header =~ /^Basic / ) {
195 unless ( C4::Context->preference('RESTBasicAuth') ) {
196 Koha::Exceptions::Authentication::Required->throw(
197 error => 'Basic authentication disabled'
200 $user = $c->_basic_auth( $authorization_header );
202 # If we have "Authorization: Basic" header and authentication
203 # failed, do not try other authentication means
204 Koha::Exceptions::Authentication::Required->throw(
205 error => 'Authentication failure.'
211 my $cookie = $c->cookie('CGISESSID');
213 # Mojo doesn't use %ENV the way CGI apps do
214 # Manually pass the remote_address to check_auth_cookie
215 my $remote_addr = $c->tx->remote_address;
216 my ($status, $sessionID) = check_cookie_auth(
218 { remote_addr => $remote_addr });
219 if ($status eq "ok") {
220 my $session = get_session($sessionID);
221 $user = Koha::Patrons->find( $session->param('number') )
222 unless $session->param('sessiontype')
223 and $session->param('sessiontype') eq 'anon';
226 elsif ($status eq "maintenance") {
227 Koha::Exceptions::UnderMaintenance->throw(
228 error => 'System is under maintenance.'
231 elsif ($status eq "expired" and $authorization) {
232 Koha::Exceptions::Authentication::SessionExpired->throw(
233 error => 'Session has been expired.'
236 elsif ($status eq "failed" and $authorization) {
237 Koha::Exceptions::Authentication::Required->throw(
238 error => 'Authentication failure.'
241 elsif ($authorization) {
242 Koha::Exceptions::Authentication->throw(
243 error => 'Unexpected authentication status.'
248 $c->stash('koha.user' => $user);
249 C4::Context->interface('api');
251 if ( $user and !$cookie_auth ) { # cookie-auth sets this and more, don't mess with that
252 $c->_set_userenv( $user );
255 if ( !$authorization and
256 ( $params->{is_public} and
257 ( C4::Context->preference('RESTPublicAnonymousRequests') or
258 $user) or $params->{is_plugin} ) ) {
259 # We do not need any authorization
260 # Check the parameters
261 validate_query_parameters( $c, $spec );
265 # We are required authorizarion, there needs
266 # to be an identified user
267 Koha::Exceptions::Authentication::Required->throw(
268 error => 'Authentication failure.' )
273 my $permissions = $authorization->{'permissions'};
274 # Check if the user is authorized
275 if ( ( defined($permissions) and haspermission($user->userid, $permissions) )
276 or allow_owner($c, $authorization, $user)
277 or allow_guarantor($c, $authorization, $user) ) {
279 validate_query_parameters( $c, $spec );
285 Koha::Exceptions::Authorization::Unauthorized->throw(
286 error => "Authorization failure. Missing required permission(s).",
287 required_permissions => $permissions,
291 =head3 validate_query_parameters
293 Validates the query parameters against the spec.
297 sub validate_query_parameters {
298 my ( $c, $action_spec ) = @_;
300 # Check for malformed query parameters
302 my %valid_parameters = map { ( $_->{in} eq 'query' ) ? ( $_->{name} => 1 ) : () } @{ $action_spec->{parameters} };
303 my $existing_params = $c->req->query_params->to_hash;
304 for my $param ( keys %{$existing_params} ) {
305 push @errors, { path => "/query/" . $param, message => 'Malformed query string' } unless exists $valid_parameters{$param};
308 Koha::Exceptions::BadParameter->throw(
316 Allows access to object for its owner.
318 There are endpoints that should allow access for the object owner even if they
319 do not have the required permission, e.g. access an own reserve. This can be
320 achieved by defining the operation as follows:
322 "/holds/{reserve_id}": {
325 "x-koha-authorization": {
337 my ($c, $authorization, $user) = @_;
339 return unless $authorization->{'allow-owner'};
341 return check_object_ownership($c, $user) if $user and $c;
344 =head3 allow_guarantor
346 Same as "allow_owner", but checks if the object is owned by one of C<$user>'s
351 sub allow_guarantor {
352 my ($c, $authorization, $user) = @_;
354 if (!$c || !$user || !$authorization || !$authorization->{'allow-guarantor'}){
358 my $guarantees = $user->guarantee_relationships->guarantees->as_list;
359 foreach my $guarantee (@{$guarantees}) {
360 return 1 if check_object_ownership($c, $guarantee);
364 =head3 check_object_ownership
366 Determines ownership of an object from request parameters.
368 As introducing an endpoint that allows access for object's owner; if the
369 parameter that will be used to determine ownership is not already inside
370 $parameters, add a new subroutine that checks the ownership and extend
371 $parameters to contain a key with parameter_name and a value of a subref to
372 the subroutine that you created.
376 sub check_object_ownership {
379 return if not $c or not $user;
382 accountlines_id => \&_object_ownership_by_accountlines_id,
383 borrowernumber => \&_object_ownership_by_patron_id,
384 patron_id => \&_object_ownership_by_patron_id,
385 checkout_id => \&_object_ownership_by_checkout_id,
386 reserve_id => \&_object_ownership_by_reserve_id,
389 foreach my $param ( keys %{ $parameters } ) {
390 my $check_ownership = $parameters->{$param};
391 if ($c->stash($param)) {
392 return &$check_ownership($c, $user, $c->stash($param));
394 elsif ($c->param($param)) {
395 return &$check_ownership($c, $user, $c->param($param));
397 elsif ($c->match->stack->[-1]->{$param}) {
398 return &$check_ownership($c, $user, $c->match->stack->[-1]->{$param});
400 elsif ($c->req->json && $c->req->json->{$param}) {
401 return 1 if &$check_ownership($c, $user, $c->req->json->{$param});
406 =head3 _object_ownership_by_accountlines_id
408 Finds a Koha::Account::Line-object by C<$accountlines_id> and checks if it
413 sub _object_ownership_by_accountlines_id {
414 my ($c, $user, $accountlines_id) = @_;
416 my $accountline = Koha::Account::Lines->find($accountlines_id);
417 return $accountline && $user->borrowernumber == $accountline->borrowernumber;
420 =head3 _object_ownership_by_borrowernumber
422 Compares C<$borrowernumber> to currently logged in C<$user>.
426 sub _object_ownership_by_patron_id {
427 my ($c, $user, $patron_id) = @_;
429 return $user->borrowernumber == $patron_id;
432 =head3 _object_ownership_by_checkout_id
434 First, attempts to find a Koha::Checkout-object by C<$issue_id>. If we find one,
435 compare its borrowernumber to currently logged in C<$user>. However, if an issue
436 is not found, attempt to find a Koha::Old::Checkout-object instead and compare its
437 borrowernumber to currently logged in C<$user>.
441 sub _object_ownership_by_checkout_id {
442 my ($c, $user, $issue_id) = @_;
444 my $issue = Koha::Checkouts->find($issue_id);
445 $issue = Koha::Old::Checkouts->find($issue_id) unless $issue;
446 return $issue && $issue->borrowernumber
447 && $user->borrowernumber == $issue->borrowernumber;
450 =head3 _object_ownership_by_reserve_id
452 Finds a Koha::Hold-object by C<$reserve_id> and checks if it
455 TODO: Also compare against old_reserves
459 sub _object_ownership_by_reserve_id {
460 my ($c, $user, $reserve_id) = @_;
462 my $reserve = Koha::Holds->find($reserve_id);
463 return $reserve && $user->borrowernumber == $reserve->borrowernumber;
468 Internal method that performs Basic authentication.
473 my ( $c, $authorization_header ) = @_;
475 my ( $type, $credentials ) = split / /, $authorization_header;
477 unless ($credentials) {
478 Koha::Exceptions::Authentication::Required->throw( error => 'Authentication failure.' );
481 my $decoded_credentials = decode_base64( $credentials );
482 my ( $user_id, $password ) = split( /:/, $decoded_credentials, 2 );
484 my $dbh = C4::Context->dbh;
485 unless ( checkpw_internal($dbh, $user_id, $password ) ) {
486 Koha::Exceptions::Authorization::Unauthorized->throw( error => 'Invalid password' );
489 return Koha::Patrons->find({ userid => $user_id });
494 $c->_set_userenv( $patron );
496 Internal method that sets C4::Context->userenv
501 my ( $c, $patron ) = @_;
503 my $library = $patron->library;
505 C4::Context->_new_userenv( $patron->borrowernumber );
506 C4::Context->set_userenv(
507 $patron->borrowernumber, # number,
508 $patron->userid, # userid,
509 $patron->cardnumber, # cardnumber
510 $patron->firstname, # firstname
511 $patron->surname, # surname
512 $library->branchcode, # branch
513 $library->branchname, # branchname
514 $patron->flags, # flags,
515 $patron->email, # emailaddress