LDAPMemberExtension::getLDAPGroupMembers() - Code Metrics - Inspection of "Support "reverse sync" feature for LDAP managed us..." - silverstripe/silverstripe-activedirectory - Measure and Improve Code Quality continuously with Scrutinizer

Completed

Pull Request — master (#64)

by Sean

created 2016-06-21 03:10 UTC

LDAPMemberExtension::getLDAPGroupMembers() B

↳ Parent: LDAPMemberExtension

Complexity

Conditions	5
Paths	5

Size

Total Lines	18
Code Lines	10

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	18
rs	8.8571
cc	5
eloc	10
nc	5
nop	1

<?php
/**
 * Class LDAPMemberExtension.
 *
 * Adds mappings from AD attributes to SilverStripe {@link Member} fields.
 */
class LDAPMemberExtension extends DataExtension
namespace YourVendor;

class YourClass { }
{
    /**
     * @var array
     */
    private static $db = array(

        // Unique user identifier, same field is used by SAMLMemberExtension
        'GUID' => 'Varchar(50)',
        'Username' => 'Varchar(64)',
        'IsImportedFromLDAP' => 'Boolean',
        'IsExpired' => 'Boolean',
        'LastSynced' => 'SS_Datetime',
    );

    /**
     * These fields are used by {@link LDAPMemberSync} to map specific AD attributes
     * to {@link Member} fields.
     *
     * @var array
     * @config
     */
    private static $ldap_field_mappings = array(

        'samaccountname' => 'Username',
        'givenname' => 'FirstName',
        'sn' => 'Surname',
        'mail' => 'Email',
    );

    /**
     * The location (relative to /assets) where to save thumbnailphoto data.
     *
     * @var string
     * @config
     */
    private static $ldap_thumbnail_path = 'Uploads';


    /**
     * When enabled, LDAP managed users have their data written back to LDAP
     * This is a push to LDAP, rather than {@link LDAPMemberSyncTask}
     * which pulls from LDAP instead.
     *
     * This requires setting write permissions on the user who talks to LDAP,
     * which is why it's disabled by default.
     *
     * Note that some constants must be configured in your environment file
     * for this to work:
     *
     * LDAP_DOMAIN - the base DN of the directory. e.g. "DN=mydomain,DC=com"
     * LDAP_NEW_USERS_OBJECT_CATEGORY - the type of object. e.g. "CN=Person,CN=Schema,DC=mydomain,DC=com"
     * LDAP_NEW_USERS_DN - where to place users in the directory. e.g. "OU=Users,DC=mydomain,DC=com"
     *
     * @var bool
     * @config
     */
    private static $reverse_sync_ldap = false;


    /**
     * If enabled, new users written are also created in LDAP.
     *
     * This requires setting write permissions on the user who talks to LDAP,
     * which is why it's disabled by default.
     *
     * Please see {@link $reverse_sync_ldap} for constants that must be configured in
     * your environment file for this to work.
     *
     * @var bool
     * @config
     */
    private static $create_new_users_in_ldap = false;


    /**
     * @var array
     */
    private static $dependencies = array(

        'ldapService' => '%$LDAPService',
    );

    public function updateSummaryFields(&$fields)
    {
        $fields = ['Username' => 'Username'] + $fields;
    }

    /**
     * @param FieldList $fields
     */
    public function updateCMSFields(FieldList $fields)
    {
        // Redo LDAP metadata fields as read-only and move to LDAP tab.
        $ldapMetadata = array();
        $fields->replaceField('IsImportedFromLDAP', $ldapMetadata[] = new ReadonlyField(
            'IsImportedFromLDAP',
            _t('LDAPMemberExtension.ISIMPORTEDFROMLDAP', 'Is user imported from LDAP/AD?')
        ));
        $fields->replaceField('GUID', $ldapMetadata[] = new ReadonlyField('GUID'));
        $fields->replaceField('IsExpired', $ldapMetadata[] = new ReadonlyField(
            'IsExpired',
            _t('LDAPMemberExtension.ISEXPIRED', 'Has user\'s LDAP/AD login expired?'))
        );
        $fields->replaceField('LastSynced', $ldapMetadata[] = new ReadonlyField(
            'LastSynced',
            _t('LDAPMemberExtension.LASTSYNCED', 'Last synced'))
        );
        $fields->addFieldsToTab('Root.LDAP', $ldapMetadata);

        if ($this->owner->IsImportedFromLDAP) {
            // Transform the automatically mapped fields into read-only.
            foreach ($this->owner->config()->ldap_field_mappings as $name) {
                $field = $fields->dataFieldByName($name);
                if (!empty($field)) {
                    // Set to readonly, but not disabled so that the data is still sent to the
                    // server and doesn't break Member_Validator
                    $field->setReadonly(true);
                    $field->setTitle($field->Title()._t('LDAPMemberExtension.IMPORTEDFIELD', ' (imported)'));
                }
            }

            // Display alert message at the top.
            $message = _t(
                'LDAPMemberExtension.INFOIMPORTED',
                'This user is automatically imported from LDAP. '.
                    'Manual changes to imported fields will be removed upon sync.'
            );
            $fields->addFieldToTab(
                'Root.Main',
                new LiteralField(
                    'Info',
                    sprintf('<p class="message warning">%s</p>', $message)
                ),
                'FirstName'
            );
        }
    }

    /**
     * Creates a new LDAP user given the current Member details. Assumption is
     * the record has been validated for the presence of FirstName, Surname, Email,
     * and Username prior to the request being sent to LDAP.
     */
    public function createUser()
    {
        $service = $this->ldapService;
class MyClass { }

$x = new MyClass();
$x->foo = true;
        if (!$service->enabled()) {
            return;
        }

        // Create user in LDAP using available information.
        $dn = sprintf('CN=%s,%s', $this->owner->Username, LDAP_NEW_USERS_DN);

        try {
            $service->add($dn, [
                'objectClass' => 'user',
                'cn' => $this->owner->Username,
                'sn' => $this->owner->Surname,
                'givenName' => $this->owner->FirstName,
                'instanceType' => '4',
                'displayName' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
                'name' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
                'codePage' => '0',
                'countryCode' => '0',
                'accountExpires' => '9223372036854775807',
                'sAMAccountName' => $this->owner->Username,
                'userPrincipalName' => sprintf('%s@%s', $this->owner->Username, LDAP_DOMAIN),
                'objectCategory' => LDAP_NEW_USERS_OBJECT_CATEGORY,
                'userAccountControl' => '66048',
                'mail' => $this->owner->Email,
                'distinguishedName' => $dn,
            ]);
        } catch (\Exception $e) {
            throw new ValidationException('LDAP synchronisation failure: '.$e->getMessage());
        }

        $user = $service->getUserByUsername($this->owner->Username);
        if (empty($user['objectguid'])) {
            throw new ValidationException('LDAP synchronisation failure: user missing GUID');
        }

        // Creation was successful, mark the user as synced with LDAP.
        $this->owner->GUID = $user['objectguid'];
        $this->owner->IsImportedFromLDAP = 1;
    }

    /**
     * Sync the Member data back to the corresponding LDAP user object.
     *
     * This is effectively a reverse sync, so we don't want to be doing
     * this onBeforeWrite as LDAPMemberSyncTask could get it into a loop.
     * This method should be called explicitly when a sync of the
     * Platform Dashboard user back to LDAP is required.
     *
     * @throws ValidationException
     */
    public function sync()
    {
        $service = $this->ldapService;
        if (!$service->enabled()) {
            return;
        }
        if (!$this->owner->IsImportedFromLDAP) {
            return;
        }

        $data = $service->getUserByGUID($this->owner->GUID);
        if (empty($data['objectguid'])) {
            throw new ValidationException('LDAP synchronisation failure: user missing GUID');
        }

        $dn = $data['distinguishedname'];

        try {
            // If the common name (cn) has changed, we need to ensure they've been moved
            // to the new DN, to avoid any clashes between user objects.
            if ($data['cn'] != $this->owner->Username) {
                $newDn = sprintf('CN=%s,%s', $this->owner->Username, preg_replace('/^CN=(.+?),/', '', $dn));
                $service->move($dn, $newDn);
                $dn = $newDn;
            }

            $service->update($dn, [
                'sn' => $this->owner->Surname,
                'givenName' => $this->owner->FirstName,
                'displayName' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
                'name' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
                'sAMAccountName' => $this->owner->Username,
                'userPrincipalName' => sprintf('%s@%s', $this->owner->Username, LDAP_DOMAIN),
                'mail' => $this->owner->Email,
            ]);
        } catch (\Exception $e) {
            throw new ValidationException('LDAP synchronisation failure: '.$e->getMessage());
        }
    }

    public function validate(ValidationResult $validationResult)
    {
        if (!$this->owner->config()->create_new_users_in_ldap) {
            return;
        }

        // We allow empty Username for registration purposes, as we need to
        // create Member records with empty Username temporarily. Forms should explicitly
        // check for Username not being empty if they require it not to be.
        if (empty($this->owner->Username)) {
            return;
        }

        if (!preg_match('/^[a-z0-9\.]+$/', $this->owner->Username)) {
            $validationResult->error(
                'Username must only contain lowercase alphanumeric characters and dots.',
                'bad'
            );
            throw new ValidationException($validationResult);
        }
    }

    /**
     * Ensure the user belongs to the correct groups in LDAP, making the
     * assumption that the assigned groups are correct.
     * This is considered a reverse sync back to LDAP.
     *
     * This also removes them from LDAP groups if they've been taken out of one.
     * It will not affect group membership of non-mapped groups, so it will
     * not touch such internal AD groups like "Domain Users".
     */
    public function syncGroups()
    {
        $service = $this->ldapService;
        if (!$service->enabled()) {
            return;
        }
        if (!$this->owner->IsImportedFromLDAP) {
            return;
        }

        $addGroups = array();
        $removeGroups = array();

        $user = $service->getUserByGUID($this->owner->GUID);
        if (empty($user['objectguid'])) {
            throw new ValidationException('LDAP synchronisation failure: user missing GUID');
        }

        // If a user belongs to a single group, this comes through as a string.
        // Normalise to a array so it's consistent.
        $existingGroups = !empty($user['memberof']) ? $user['memberof'] : array();
        if ($existingGroups && is_string($existingGroups)) {
            $existingGroups = array($existingGroups);
        }

        foreach ($this->owner->Groups() as $group) {
            if (!$group->IsImportedFromLDAP) {
                continue;
            }

            // mark this group as something we need to ensure the user belongs to in LDAP.
            $addGroups[] = $group->DN;
        }

        // Which existing LDAP groups are not in the add groups? We'll check these groups to
        // see if the user should be removed from any of them.
        $remainingGroups = array_diff($existingGroups, $addGroups);

        foreach ($remainingGroups as $groupDn) {
            // We only want to be removing groups we have a local Group mapped to. Removing
            // membership for anything else would be bad!
            $group = Group::get()->filter('DN', $groupDn)->first();
            if (!$group || !$group->exists()) {
                continue;
            }

            // this group should be removed from the user's memberof attribute, as it's been removed.
            $removeGroups[] = $groupDn;
        }

        // go through the groups we want the user to be in and ensure they're in them.
        foreach ($addGroups as $groupDn) {
            $members = $this->getLDAPGroupMembers($groupDn);

            // this user is already in the group, no need to do anything.
            if (in_array($user['distinguishedname'], $members)) {
                continue;
            }

            $members[] = $user['distinguishedname'];

            try {
                $service->update($groupDn, array('member' => $members));
            } catch (\Exception $e) {
                throw new ValidationException('LDAP group membership add failure: '.$e->getMessage());
            }
        }

        // go through the groups we _don't_ want the user to be in and ensure they're taken out of them.
        foreach ($removeGroups as $groupDn) {
            $members = $this->getLDAPGroupMembers($groupDn);

            // remove the user from the members data.
            if (in_array($user['distinguishedname'], $members)) {
                foreach ($members as $i => $dn) {
                    if ($dn == $user['distinguishedname']) {
                        unset($members[$i]);
                    }
                }
            }

            try {
                $service->update($groupDn, array('member' => $members));
            } catch (\Exception $e) {
                throw new ValidationException('LDAP group membership remove failure: '.$e->getMessage());
            }
        }
    }

    /**
     * Given a group DN, look up the group membership data in LDAP.
     *
     * @param string $groupDn
     *
     * @return array
     */
    protected function getLDAPGroupMembers($groupDn)
    {
        $service = $this->ldapService;
        if (!$service->enabled()) {
            return;
        }

        $groupObj = Group::get()->filter('DN', $groupDn)->first();
        $groupData = $service->getGroupByGUID($groupObj->GUID);
        $members = !empty($groupData['member']) ? $groupData['member'] : array();
        // If a user belongs to a single group, this comes through as a string.
        // Normalise to a array so it's consistent.
        if ($members && is_string($members)) {
            $members = array($members);
        }

        return $members;
    }

    /**
     * Create the user in LDAP and mark as synced, provided that
     * reverse sync is enabled.
     *
     * Set a flag "Creating" so other extensions using on*() events can
     * detect whether it's in a state of being created, such as for
     * synchronising with other services when a user is being created
     * in LDAP for the first time.
     */
    public function onBeforeWrite()
    {
        if (!$this->owner->config()->create_new_users_in_ldap) {
            return;
        }
        $service = $this->ldapService;
        if (!$service->enabled()) {
            return;
        }

        if ($this->owner->Username) {
            $this->owner->Username = strtolower($this->owner->Username);
        }

        // Ensure the user exists LDAP.
        if ($this->owner->Username && !$this->owner->IsImportedFromLDAP) {
            $this->createUser();
            $this->owner->Creating = true;
        }
    }

    /**
     * Sync the local data with LDAP, and ensure local membership is also set in
     * LDAP too. This writes into LDAP, provided reverse sync is enabled.
     */
    public function onAfterWrite()
    {
        if (!$this->owner->config()->reverse_sync_ldap) {
            return;
        }
        if ($this->owner->IsImportedFromLDAP) {
            $this->sync();
            $this->syncGroups();
        }

        if (
            !$this->owner->Creating ||
            !$this->owner->IsImportedFromLDAP
        ) {
            return;
        }

        // muzdowski: Creation is entering the last phase. I have seen framework trying to ->write
        // twice in a row, resulting in an irrelevant error second time around. Mark creation
        // explicitly as done to prevent that.
        $this->owner->Creating = false;
    }

    /**
     * Triggered by {@link Member::logIn()} when successfully logged in,
     * this will update the Member record from AD data.
     */
    public function memberLoggedIn()
    {
        if ($this->owner->GUID) {
            $this->ldapService->updateMemberFromLDAP($this->owner);
        }
    }
}


1			<?php
2			/**
3			* Class LDAPMemberExtension.
4			*
5			* Adds mappings from AD attributes to SilverStripe {@link Member} fields.
6			*/
7			class LDAPMemberExtension extends DataExtension
			0 ignored issues – show Coding Style Compatibility introduced 2016-03-22 20:04 UTC by Report Bug Copy Issue Report PSR1 recommends that each class must be in a namespace of at least one level to avoid collisions. You can fix this by adding a namespace to your class: namespace YourVendor; class YourClass { } When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries. Loading history...
8			{
9			/**
10			* @var array
11			*/
12			private static $db = array(
			0 ignored issues – show Unused Code introduced 2016-03-22 20:04 UTC by Report Bug Copy Issue Report The property `$db` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
13			// Unique user identifier, same field is used by SAMLMemberExtension
14			'GUID' => 'Varchar(50)',
15			'Username' => 'Varchar(64)',
16			'IsImportedFromLDAP' => 'Boolean',
17			'IsExpired' => 'Boolean',
18			'LastSynced' => 'SS_Datetime',
19			);
20
21			/**
22			* These fields are used by {@link LDAPMemberSync} to map specific AD attributes
23			* to {@link Member} fields.
24			*
25			* @var array
26			* @config
27			*/
28			private static $ldap_field_mappings = array(
			0 ignored issues – show Unused Code introduced 2016-03-22 20:04 UTC by Report Bug Copy Issue Report The property `$ldap_field_mappings` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
29			'samaccountname' => 'Username',
30			'givenname' => 'FirstName',
31			'sn' => 'Surname',
32			'mail' => 'Email',
33			);
34
35			/**
36			* The location (relative to /assets) where to save thumbnailphoto data.
37			*
38			* @var string
39			* @config
40			*/
41			private static $ldap_thumbnail_path = 'Uploads';
			0 ignored issues – show Unused Code introduced 2016-03-22 20:04 UTC by Report Bug Copy Issue Report The property `$ldap_thumbnail_path` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
42
43			/**
44			* When enabled, LDAP managed users have their data written back to LDAP
45			* This is a push to LDAP, rather than {@link LDAPMemberSyncTask}
46			* which pulls from LDAP instead.
47			*
48			* This requires setting write permissions on the user who talks to LDAP,
49			* which is why it's disabled by default.
50			*
51			* Note that some constants must be configured in your environment file
52			* for this to work:
53			*
54			* LDAP_DOMAIN - the base DN of the directory. e.g. "DN=mydomain,DC=com"
55			* LDAP_NEW_USERS_OBJECT_CATEGORY - the type of object. e.g. "CN=Person,CN=Schema,DC=mydomain,DC=com"
56			* LDAP_NEW_USERS_DN - where to place users in the directory. e.g. "OU=Users,DC=mydomain,DC=com"
57			*
58			* @var bool
59			* @config
60			*/
61			private static $reverse_sync_ldap = false;
			0 ignored issues – show Unused Code introduced 2016-06-21 03:14 UTC by Report Bug Copy Issue Report The property `$reverse_sync_ldap` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
62
63			/**
64			* If enabled, new users written are also created in LDAP.
65			*
66			* This requires setting write permissions on the user who talks to LDAP,
67			* which is why it's disabled by default.
68			*
69			* Please see {@link $reverse_sync_ldap} for constants that must be configured in
70			* your environment file for this to work.
71			*
72			* @var bool
73			* @config
74			*/
75			private static $create_new_users_in_ldap = false;
			0 ignored issues – show Unused Code introduced 2016-06-21 03:14 UTC by Report Bug Copy Issue Report The property `$create_new_users_in_ldap` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
76
77			/**
78			* @var array
79			*/
80			private static $dependencies = array(
			0 ignored issues – show Unused Code introduced 2016-03-22 20:04 UTC by Report Bug Copy Issue Report The property `$dependencies` is not used and could be removed. This check marks private properties in classes that are never used. Those properties can be removed. Loading history...
81			'ldapService' => '%$LDAPService',
82			);
83
84			public function updateSummaryFields(&$fields)
85			{
86			$fields = ['Username' => 'Username'] + $fields;
87			}
88
89			/**
90			* @param FieldList $fields
91			*/
92			public function updateCMSFields(FieldList $fields)
93			{
94			// Redo LDAP metadata fields as read-only and move to LDAP tab.
95			$ldapMetadata = array();
96			$fields->replaceField('IsImportedFromLDAP', $ldapMetadata[] = new ReadonlyField(
97			'IsImportedFromLDAP',
98			_t('LDAPMemberExtension.ISIMPORTEDFROMLDAP', 'Is user imported from LDAP/AD?')
99			));
100			$fields->replaceField('GUID', $ldapMetadata[] = new ReadonlyField('GUID'));
101			$fields->replaceField('IsExpired', $ldapMetadata[] = new ReadonlyField(
102			'IsExpired',
103			_t('LDAPMemberExtension.ISEXPIRED', 'Has user\'s LDAP/AD login expired?'))
104			);
105			$fields->replaceField('LastSynced', $ldapMetadata[] = new ReadonlyField(
106			'LastSynced',
107			_t('LDAPMemberExtension.LASTSYNCED', 'Last synced'))
108			);
109			$fields->addFieldsToTab('Root.LDAP', $ldapMetadata);
110
111			if ($this->owner->IsImportedFromLDAP) {
112			// Transform the automatically mapped fields into read-only.
113			foreach ($this->owner->config()->ldap_field_mappings as $name) {
114			$field = $fields->dataFieldByName($name);
115			if (!empty($field)) {
116			// Set to readonly, but not disabled so that the data is still sent to the
117			// server and doesn't break Member_Validator
118			$field->setReadonly(true);
119			$field->setTitle($field->Title()._t('LDAPMemberExtension.IMPORTEDFIELD', ' (imported)'));
120			}
121			}
122
123			// Display alert message at the top.
124			$message = _t(
125			'LDAPMemberExtension.INFOIMPORTED',
126			'This user is automatically imported from LDAP. '.
127			'Manual changes to imported fields will be removed upon sync.'
128			);
129			$fields->addFieldToTab(
130			'Root.Main',
131			new LiteralField(
132			'Info',
133			sprintf('<p class="message warning">%s</p>', $message)
134			),
135			'FirstName'
136			);
137			}
138			}
139
140			/**
141			* Creates a new LDAP user given the current Member details. Assumption is
142			* the record has been validated for the presence of FirstName, Surname, Email,
143			* and Username prior to the request being sent to LDAP.
144			*/
145			public function createUser()
146			{
147			$service = $this->ldapService;
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148			if (!$service->enabled()) {
149			return;
150			}
151
152			// Create user in LDAP using available information.
153			$dn = sprintf('CN=%s,%s', $this->owner->Username, LDAP_NEW_USERS_DN);
154
155			try {
156			$service->add($dn, [
157			'objectClass' => 'user',
158			'cn' => $this->owner->Username,
159			'sn' => $this->owner->Surname,
160			'givenName' => $this->owner->FirstName,
161			'instanceType' => '4',
162			'displayName' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
163			'name' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
164			'codePage' => '0',
165			'countryCode' => '0',
166			'accountExpires' => '9223372036854775807',
167			'sAMAccountName' => $this->owner->Username,
168			'userPrincipalName' => sprintf('%s@%s', $this->owner->Username, LDAP_DOMAIN),
169			'objectCategory' => LDAP_NEW_USERS_OBJECT_CATEGORY,
170			'userAccountControl' => '66048',
171			'mail' => $this->owner->Email,
172			'distinguishedName' => $dn,
173			]);
174			} catch (\Exception $e) {
175			throw new ValidationException('LDAP synchronisation failure: '.$e->getMessage());
176			}
177
178			$user = $service->getUserByUsername($this->owner->Username);
179			if (empty($user['objectguid'])) {
180			throw new ValidationException('LDAP synchronisation failure: user missing GUID');
181			}
182
183			// Creation was successful, mark the user as synced with LDAP.
184			$this->owner->GUID = $user['objectguid'];
185			$this->owner->IsImportedFromLDAP = 1;
186			}
187
188			/**
189			* Sync the Member data back to the corresponding LDAP user object.
190			*
191			* This is effectively a reverse sync, so we don't want to be doing
192			* this onBeforeWrite as LDAPMemberSyncTask could get it into a loop.
193			* This method should be called explicitly when a sync of the
194			* Platform Dashboard user back to LDAP is required.
195			*
196			* @throws ValidationException
197			*/
198			public function sync()
199			{
200			$service = $this->ldapService;
201			if (!$service->enabled()) {
202			return;
203			}
204			if (!$this->owner->IsImportedFromLDAP) {
205			return;
206			}
207
208			$data = $service->getUserByGUID($this->owner->GUID);
209			if (empty($data['objectguid'])) {
210			throw new ValidationException('LDAP synchronisation failure: user missing GUID');
211			}
212
213			$dn = $data['distinguishedname'];
214
215			try {
216			// If the common name (cn) has changed, we need to ensure they've been moved
217			// to the new DN, to avoid any clashes between user objects.
218			if ($data['cn'] != $this->owner->Username) {
219			$newDn = sprintf('CN=%s,%s', $this->owner->Username, preg_replace('/^CN=(.+?),/', '', $dn));
220			$service->move($dn, $newDn);
221			$dn = $newDn;
222			}
223
224			$service->update($dn, [
225			'sn' => $this->owner->Surname,
226			'givenName' => $this->owner->FirstName,
227			'displayName' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
228			'name' => sprintf('%s %s', $this->owner->FirstName, $this->owner->Surname),
229			'sAMAccountName' => $this->owner->Username,
230			'userPrincipalName' => sprintf('%s@%s', $this->owner->Username, LDAP_DOMAIN),
231			'mail' => $this->owner->Email,
232			]);
233			} catch (\Exception $e) {
234			throw new ValidationException('LDAP synchronisation failure: '.$e->getMessage());
235			}
236			}
237
238			public function validate(ValidationResult $validationResult)
239			{
240			if (!$this->owner->config()->create_new_users_in_ldap) {
241			return;
242			}
243
244			// We allow empty Username for registration purposes, as we need to
245			// create Member records with empty Username temporarily. Forms should explicitly
246			// check for Username not being empty if they require it not to be.
247			if (empty($this->owner->Username)) {
248			return;
249			}
250
251			if (!preg_match('/^[a-z0-9\.]+$/', $this->owner->Username)) {
252			$validationResult->error(
253			'Username must only contain lowercase alphanumeric characters and dots.',
254			'bad'
255			);
256			throw new ValidationException($validationResult);
257			}
258			}
259
260			/**
261			* Ensure the user belongs to the correct groups in LDAP, making the
262			* assumption that the assigned groups are correct.
263			* This is considered a reverse sync back to LDAP.
264			*
265			* This also removes them from LDAP groups if they've been taken out of one.
266			* It will not affect group membership of non-mapped groups, so it will
267			* not touch such internal AD groups like "Domain Users".
268			*/
269			public function syncGroups()
270			{
271			$service = $this->ldapService;
272			if (!$service->enabled()) {
273			return;
274			}
275			if (!$this->owner->IsImportedFromLDAP) {
276			return;
277			}
278
279			$addGroups = array();
280			$removeGroups = array();
281
282			$user = $service->getUserByGUID($this->owner->GUID);
283			if (empty($user['objectguid'])) {
284			throw new ValidationException('LDAP synchronisation failure: user missing GUID');
285			}
286
287			// If a user belongs to a single group, this comes through as a string.
288			// Normalise to a array so it's consistent.
289			$existingGroups = !empty($user['memberof']) ? $user['memberof'] : array();
290			if ($existingGroups && is_string($existingGroups)) {
291			$existingGroups = array($existingGroups);
292			}
293
294			foreach ($this->owner->Groups() as $group) {
295			if (!$group->IsImportedFromLDAP) {
296			continue;
297			}
298
299			// mark this group as something we need to ensure the user belongs to in LDAP.
300			$addGroups[] = $group->DN;
301			}
302
303			// Which existing LDAP groups are not in the add groups? We'll check these groups to
304			// see if the user should be removed from any of them.
305			$remainingGroups = array_diff($existingGroups, $addGroups);
306
307			foreach ($remainingGroups as $groupDn) {
308			// We only want to be removing groups we have a local Group mapped to. Removing
309			// membership for anything else would be bad!
310			$group = Group::get()->filter('DN', $groupDn)->first();
311			if (!$group \|\| !$group->exists()) {
312			continue;
313			}
314
315			// this group should be removed from the user's memberof attribute, as it's been removed.
316			$removeGroups[] = $groupDn;
317			}
318
319			// go through the groups we want the user to be in and ensure they're in them.
320			foreach ($addGroups as $groupDn) {
321			$members = $this->getLDAPGroupMembers($groupDn);
322
323			// this user is already in the group, no need to do anything.
324			if (in_array($user['distinguishedname'], $members)) {
325			continue;
326			}
327
328			$members[] = $user['distinguishedname'];
329
330			try {
331			$service->update($groupDn, array('member' => $members));
332			} catch (\Exception $e) {
333			throw new ValidationException('LDAP group membership add failure: '.$e->getMessage());
334			}
335			}
336
337			// go through the groups we _don't_ want the user to be in and ensure they're taken out of them.
338			foreach ($removeGroups as $groupDn) {
339			$members = $this->getLDAPGroupMembers($groupDn);
340
341			// remove the user from the members data.
342			if (in_array($user['distinguishedname'], $members)) {
343			foreach ($members as $i => $dn) {
344			if ($dn == $user['distinguishedname']) {
345			unset($members[$i]);
346			}
347			}
348			}
349
350			try {
351			$service->update($groupDn, array('member' => $members));
352			} catch (\Exception $e) {
353			throw new ValidationException('LDAP group membership remove failure: '.$e->getMessage());
354			}
355			}
356			}
357
358			/**
359			* Given a group DN, look up the group membership data in LDAP.
360			*
361			* @param string $groupDn
362			*
363			* @return array
364			*/
365			protected function getLDAPGroupMembers($groupDn)
366			{
367			$service = $this->ldapService;
368			if (!$service->enabled()) {
369			return;
370			}
371
372			$groupObj = Group::get()->filter('DN', $groupDn)->first();
373			$groupData = $service->getGroupByGUID($groupObj->GUID);
374			$members = !empty($groupData['member']) ? $groupData['member'] : array();
375			// If a user belongs to a single group, this comes through as a string.
376			// Normalise to a array so it's consistent.
377			if ($members && is_string($members)) {
378			$members = array($members);
379			}
380
381			return $members;
382			}
383
384			/**
385			* Create the user in LDAP and mark as synced, provided that
386			* reverse sync is enabled.
387			*
388			* Set a flag "Creating" so other extensions using on*() events can
389			* detect whether it's in a state of being created, such as for
390			* synchronising with other services when a user is being created
391			* in LDAP for the first time.
392			*/
393			public function onBeforeWrite()
394			{
395			if (!$this->owner->config()->create_new_users_in_ldap) {
396			return;
397			}
398			$service = $this->ldapService;
399			if (!$service->enabled()) {
400			return;
401			}
402
403			if ($this->owner->Username) {
404			$this->owner->Username = strtolower($this->owner->Username);
405			}
406
407			// Ensure the user exists LDAP.
408			if ($this->owner->Username && !$this->owner->IsImportedFromLDAP) {
409			$this->createUser();
410			$this->owner->Creating = true;
411			}
412			}
413
414			/**
415			* Sync the local data with LDAP, and ensure local membership is also set in
416			* LDAP too. This writes into LDAP, provided reverse sync is enabled.
417			*/
418			public function onAfterWrite()
419			{
420			if (!$this->owner->config()->reverse_sync_ldap) {
421			return;
422			}
423			if ($this->owner->IsImportedFromLDAP) {
424			$this->sync();
425			$this->syncGroups();
426			}
427
428			if (
429			!$this->owner->Creating \|\|
430			!$this->owner->IsImportedFromLDAP
431			) {
432			return;
433			}
434
435			// muzdowski: Creation is entering the last phase. I have seen framework trying to ->write
436			// twice in a row, resulting in an irrelevant error second time around. Mark creation
437			// explicitly as done to prevent that.
438			$this->owner->Creating = false;
439			}
440
441			/**
442			* Triggered by {@link Member::logIn()} when successfully logged in,
443			* this will update the Member record from AD data.
444			*/
445			public function memberLoggedIn()
446			{
447			if ($this->owner->GUID) {
448			$this->ldapService->updateMemberFromLDAP($this->owner);
449			}
450			}
451			}
452

silverstripe / silverstripe-activedirectory

Pull Request — master (#64)

LDAPMemberExtension::getLDAPGroupMembers() B

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