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;
33 use Koha::OAuthAccessTokens;
34 use Koha::Old::Checkouts;
38 use Koha::Exceptions::Authentication;
39 use Koha::Exceptions::Authorization;
41 use MIME::Base64 qw( decode_base64 );
42 use Module::Load::Conditional;
43 use Scalar::Util qw( blessed );
44 use Try::Tiny qw( catch try );
54 This subroutine is called before every request to API.
66 my $namespace = $c->req->url->to_abs->path->[2] // '';
68 my $is_public = 0; # By default routes are not public
71 if ( $namespace eq 'public' ) {
73 } elsif ( $namespace eq 'contrib' ) {
78 and !C4::Context->preference('RESTPublicAPI') )
80 Koha::Exceptions::Authorization->throw(
81 "Configuration prevents the usage of this endpoint by unprivileged users");
84 if ( $c->req->url->to_abs->path eq '/api/v1/oauth/token' ) {
85 # Requesting a token shouldn't go through the API authenticaction chain
88 elsif ( $namespace eq '' or $namespace eq '.html' ) {
92 $status = authenticate_api_request($c, { is_public => $is_public, is_plugin => $is_plugin });
96 unless (blessed($_)) {
99 json => { error => 'Something went wrong, check the logs.' }
102 if ($_->isa('Koha::Exceptions::UnderMaintenance')) {
103 return $c->render(status => 503, json => { error => $_->error });
105 elsif ($_->isa('Koha::Exceptions::Authentication::SessionExpired')) {
106 return $c->render(status => 401, json => { error => $_->error });
108 elsif ($_->isa('Koha::Exceptions::Authentication::Required')) {
109 return $c->render(status => 401, json => { error => $_->error });
111 elsif ($_->isa('Koha::Exceptions::Authentication')) {
112 return $c->render(status => 401, json => { error => $_->error });
114 elsif ($_->isa('Koha::Exceptions::BadParameter')) {
115 return $c->render(status => 400, json => $_->error );
117 elsif ($_->isa('Koha::Exceptions::Authorization::Unauthorized')) {
118 return $c->render(status => 403, json => {
120 required_permissions => $_->required_permissions,
123 elsif ($_->isa('Koha::Exceptions::Authorization')) {
124 return $c->render(status => 403, json => { error => $_->error });
126 elsif ($_->isa('Koha::Exceptions')) {
127 return $c->render(status => 500, json => { error => $_->error });
132 json => { error => 'Something went wrong, check the logs.' }
140 =head3 authenticate_api_request
142 Validates authentication and allows access if authorization is not required or
143 if authorization is required and user has required permissions to access.
147 sub authenticate_api_request {
148 my ( $c, $params ) = @_;
152 # The following supports retrieval of spec with Mojolicious::Plugin::OpenAPI@1.17 and later (first one)
153 # and older versions (second one).
154 # TODO: remove the latter 'openapi.op_spec' if minimum version is bumped to at least 1.17.
155 my $spec = $c->openapi->spec || $c->match->endpoint->pattern->defaults->{'openapi.op_spec'};
157 $c->stash_embed({ spec => $spec });
158 $c->stash_overrides();
162 my $authorization = $spec->{'x-koha-authorization'};
164 my $authorization_header = $c->req->headers->authorization;
166 if ($authorization_header and $authorization_header =~ /^Bearer /) {
167 # attempt to use OAuth2 authentication
168 if ( ! Module::Load::Conditional::can_load(
169 modules => {'Net::OAuth2::AuthorizationServer' => undef} )) {
170 Koha::Exceptions::Authorization::Unauthorized->throw(
171 error => 'Authentication failure.'
175 require Net::OAuth2::AuthorizationServer;
178 my $server = Net::OAuth2::AuthorizationServer->new;
179 my $grant = $server->client_credentials_grant(Koha::OAuth::config);
180 my ($type, $token) = split / /, $authorization_header;
181 my ($valid_token, $error) = $grant->verify_access_token(
182 access_token => $token,
186 my $patron_id = Koha::ApiKeys->find( $valid_token->{client_id} )->patron_id;
187 $user = Koha::Patrons->find($patron_id);
190 # If we have "Authorization: Bearer" header and oauth authentication
191 # failed, do not try other authentication means
192 Koha::Exceptions::Authentication::Required->throw(
193 error => 'Authentication failure.'
197 elsif ( $authorization_header and $authorization_header =~ /^Basic / ) {
198 unless ( C4::Context->preference('RESTBasicAuth') ) {
199 Koha::Exceptions::Authentication::Required->throw(
200 error => 'Basic authentication disabled'
203 $user = $c->_basic_auth( $authorization_header );
205 # If we have "Authorization: Basic" header and authentication
206 # failed, do not try other authentication means
207 Koha::Exceptions::Authentication::Required->throw(
208 error => 'Authentication failure.'
214 my $cookie = $c->cookie('CGISESSID');
216 # Mojo doesn't use %ENV the way CGI apps do
217 # Manually pass the remote_address to check_auth_cookie
218 my $remote_addr = $c->tx->remote_address;
219 my ($status, $session) = check_cookie_auth(
221 { remote_addr => $remote_addr });
222 if ($status eq "ok") {
223 $user = Koha::Patrons->find( $session->param('number') )
224 unless $session->param('sessiontype')
225 and $session->param('sessiontype') eq 'anon';
228 elsif ($status eq "maintenance") {
229 Koha::Exceptions::UnderMaintenance->throw(
230 error => 'System is under maintenance.'
233 elsif ($status eq "expired" and $authorization) {
234 Koha::Exceptions::Authentication::SessionExpired->throw(
235 error => 'Session has been expired.'
238 elsif ($status eq "failed" and $authorization) {
239 Koha::Exceptions::Authentication::Required->throw(
240 error => 'Authentication failure.'
243 elsif ($authorization) {
244 Koha::Exceptions::Authentication->throw(
245 error => 'Unexpected authentication status.'
250 $c->stash('koha.user' => $user);
251 C4::Context->interface('api');
253 if ( $user and !$cookie_auth ) { # cookie-auth sets this and more, don't mess with that
254 $c->_set_userenv( $user );
257 if ( !$authorization and
258 ( $params->{is_public} and
259 ( C4::Context->preference('RESTPublicAnonymousRequests') or
260 $user) or $params->{is_plugin} ) ) {
261 # We do not need any authorization
262 # Check the parameters
263 validate_query_parameters( $c, $spec );
267 # We are required authorizarion, there needs
268 # to be an identified user
269 Koha::Exceptions::Authentication::Required->throw(
270 error => 'Authentication failure.' )
275 my $permissions = $authorization->{'permissions'};
276 # Check if the user is authorized
277 if ( ( defined($permissions) and haspermission($user->userid, $permissions) )
278 or allow_owner($c, $authorization, $user)
279 or allow_guarantor($c, $authorization, $user) ) {
281 validate_query_parameters( $c, $spec );
287 Koha::Exceptions::Authorization::Unauthorized->throw(
288 error => "Authorization failure. Missing required permission(s).",
289 required_permissions => $permissions,
293 =head3 validate_query_parameters
295 Validates the query parameters against the spec.
299 sub validate_query_parameters {
300 my ( $c, $action_spec ) = @_;
302 # Check for malformed query parameters
304 my %valid_parameters = map { ( $_->{in} eq 'query' ) ? ( $_->{name} => 1 ) : () } @{ $action_spec->{parameters} };
305 my $existing_params = $c->req->query_params->to_hash;
306 for my $param ( keys %{$existing_params} ) {
307 push @errors, { path => "/query/" . $param, message => 'Malformed query string' } unless exists $valid_parameters{$param};
310 Koha::Exceptions::BadParameter->throw(
317 Allows access to object for its owner.
319 There are endpoints that should allow access for the object owner even if they
320 do not have the required permission, e.g. access an own reserve. This can be
321 achieved by defining the operation as follows:
323 "/holds/{reserve_id}": {
326 "x-koha-authorization": {
338 my ($c, $authorization, $user) = @_;
340 return unless $authorization->{'allow-owner'};
342 return check_object_ownership($c, $user) if $user and $c;
345 =head3 allow_guarantor
347 Same as "allow_owner", but checks if the object is owned by one of C<$user>'s
352 sub allow_guarantor {
353 my ($c, $authorization, $user) = @_;
355 if (!$c || !$user || !$authorization || !$authorization->{'allow-guarantor'}){
359 my $guarantees = $user->guarantee_relationships->guarantees->as_list;
360 foreach my $guarantee (@{$guarantees}) {
361 return 1 if check_object_ownership($c, $guarantee);
365 =head3 check_object_ownership
367 Determines ownership of an object from request parameters.
369 As introducing an endpoint that allows access for object's owner; if the
370 parameter that will be used to determine ownership is not already inside
371 $parameters, add a new subroutine that checks the ownership and extend
372 $parameters to contain a key with parameter_name and a value of a subref to
373 the subroutine that you created.
377 sub check_object_ownership {
380 return if not $c or not $user;
383 accountlines_id => \&_object_ownership_by_accountlines_id,
384 borrowernumber => \&_object_ownership_by_patron_id,
385 patron_id => \&_object_ownership_by_patron_id,
386 checkout_id => \&_object_ownership_by_checkout_id,
387 reserve_id => \&_object_ownership_by_reserve_id,
390 foreach my $param ( keys %{ $parameters } ) {
391 my $check_ownership = $parameters->{$param};
392 if ($c->stash($param)) {
393 return &$check_ownership($c, $user, $c->stash($param));
395 elsif ($c->param($param)) {
396 return &$check_ownership($c, $user, $c->param($param));
398 elsif ($c->match->stack->[-1]->{$param}) {
399 return &$check_ownership($c, $user, $c->match->stack->[-1]->{$param});
401 elsif ($c->req->json && $c->req->json->{$param}) {
402 return 1 if &$check_ownership($c, $user, $c->req->json->{$param});
407 =head3 _object_ownership_by_accountlines_id
409 Finds a Koha::Account::Line-object by C<$accountlines_id> and checks if it
414 sub _object_ownership_by_accountlines_id {
415 my ($c, $user, $accountlines_id) = @_;
417 my $accountline = Koha::Account::Lines->find($accountlines_id);
418 return $accountline && $user->borrowernumber == $accountline->borrowernumber;
421 =head3 _object_ownership_by_borrowernumber
423 Compares C<$borrowernumber> to currently logged in C<$user>.
427 sub _object_ownership_by_patron_id {
428 my ($c, $user, $patron_id) = @_;
430 return $user->borrowernumber == $patron_id;
433 =head3 _object_ownership_by_checkout_id
435 First, attempts to find a Koha::Checkout-object by C<$issue_id>. If we find one,
436 compare its borrowernumber to currently logged in C<$user>. However, if an issue
437 is not found, attempt to find a Koha::Old::Checkout-object instead and compare its
438 borrowernumber to currently logged in C<$user>.
442 sub _object_ownership_by_checkout_id {
443 my ($c, $user, $issue_id) = @_;
445 my $issue = Koha::Checkouts->find($issue_id);
446 $issue = Koha::Old::Checkouts->find($issue_id) unless $issue;
447 return $issue && $issue->borrowernumber
448 && $user->borrowernumber == $issue->borrowernumber;
451 =head3 _object_ownership_by_reserve_id
453 Finds a Koha::Hold-object by C<$reserve_id> and checks if it
456 TODO: Also compare against old_reserves
460 sub _object_ownership_by_reserve_id {
461 my ($c, $user, $reserve_id) = @_;
463 my $reserve = Koha::Holds->find($reserve_id);
464 return $reserve && $user->borrowernumber == $reserve->borrowernumber;
469 Internal method that performs Basic authentication.
474 my ( $c, $authorization_header ) = @_;
476 my ( $type, $credentials ) = split / /, $authorization_header;
478 unless ($credentials) {
479 Koha::Exceptions::Authentication::Required->throw( error => 'Authentication failure.' );
482 my $decoded_credentials = decode_base64( $credentials );
483 my ( $user_id, $password ) = split( /:/, $decoded_credentials, 2 );
485 my $dbh = C4::Context->dbh;
486 unless ( checkpw_internal($dbh, $user_id, $password ) ) {
487 Koha::Exceptions::Authorization::Unauthorized->throw( error => 'Invalid password' );
490 return Koha::Patrons->find({ userid => $user_id });
495 $c->_set_userenv( $patron );
497 Internal method that sets C4::Context->userenv
502 my ( $c, $patron ) = @_;
504 my $passed_library_id = $c->req->headers->header('x-koha-library');
507 if ( $passed_library_id ) {
508 $THE_library = Koha::Libraries->find( $passed_library_id );
509 Koha::Exceptions::Authorization::Unauthorized->throw(
510 "Unauthorized attempt to set library to $passed_library_id"
511 ) unless $THE_library and $patron->can_log_into($THE_library);
514 $THE_library = $patron->library;
517 C4::Context->_new_userenv( $patron->borrowernumber );
518 C4::Context->set_userenv(
519 $patron->borrowernumber, # number,
520 $patron->userid, # userid,
521 $patron->cardnumber, # cardnumber
522 $patron->firstname, # firstname
523 $patron->surname, # surname
524 $THE_library->branchcode, # branch
525 $THE_library->branchname, # branchname
526 $patron->flags, # flags,
527 $patron->email, # emailaddress