LDAPMemberExtension::onBeforeWrite() - 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 03:08 UTC

LDAPMemberExtension::onBeforeWrite() B

↳ Parent: LDAPMemberExtension

Complexity

Conditions	6
Paths	6

Size

Total Lines	20
Code Lines	11

Duplication

Lines	0
Ratio	0 %

Importance

Changes	1
Bugs	0	Features	0

Metric	Value
c	1
b	0
f	0
dl	0
loc	20
rs	8.8571
cc	6
eloc	11
nc	6
nop	0

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

silverstripe / silverstripe-activedirectory

Pull Request — master (#64)

LDAPMemberExtension::onBeforeWrite() B

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