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-rw-r--r--app/Core/Ldap/Client.php84
-rw-r--r--app/Core/Ldap/ClientException.php15
-rw-r--r--app/Core/Ldap/Query.php95
-rw-r--r--app/Core/Ldap/User.php178
4 files changed, 372 insertions, 0 deletions
diff --git a/app/Core/Ldap/Client.php b/app/Core/Ldap/Client.php
new file mode 100644
index 00000000..a523428c
--- /dev/null
+++ b/app/Core/Ldap/Client.php
@@ -0,0 +1,84 @@
+<?php
+
+namespace Kanboard\Core\Ldap;
+
+/**
+ * LDAP Client
+ *
+ * @package ldap
+ * @author Frederic Guillot
+ */
+class Client
+{
+ /**
+ * Get server connection
+ *
+ * @access public
+ * @param string $server LDAP server hostname or IP
+ * @param integer $port LDAP port
+ * @param boolean $tls Start TLS
+ * @param boolean $verify Skip SSL certificate verification
+ * @return resource
+ */
+ public function getConnection($server, $port = LDAP_PORT, $tls = LDAP_START_TLS, $verify = LDAP_SSL_VERIFY)
+ {
+ if (! function_exists('ldap_connect')) {
+ throw new ClientException('LDAP: The PHP LDAP extension is required');
+ }
+
+ if (! $verify) {
+ putenv('LDAPTLS_REQCERT=never');
+ }
+
+ $ldap = ldap_connect($server, $port);
+
+ if ($ldap === false) {
+ throw new ClientException('LDAP: Unable to connect to the LDAP server');
+ }
+
+ ldap_set_option($ldap, LDAP_OPT_PROTOCOL_VERSION, 3);
+ ldap_set_option($ldap, LDAP_OPT_REFERRALS, 0);
+ ldap_set_option($ldap, LDAP_OPT_NETWORK_TIMEOUT, 1);
+ ldap_set_option($ldap, LDAP_OPT_TIMELIMIT, 1);
+
+ if ($tls && ! @ldap_start_tls($ldap)) {
+ throw new ClientException('LDAP: Unable to start TLS');
+ }
+
+ return $ldap;
+ }
+
+ /**
+ * Anonymous authentication
+ *
+ * @access public
+ * @param resource $ldap
+ * @return boolean
+ */
+ public function useAnonymousAuthentication($ldap)
+ {
+ if (! ldap_bind($ldap)) {
+ throw new ClientException('Unable to perform anonymous binding');
+ }
+
+ return true;
+ }
+
+ /**
+ * Authentication with username/password
+ *
+ * @access public
+ * @param resource $ldap
+ * @param string $username
+ * @param string $password
+ * @return boolean
+ */
+ public function authenticate($ldap, $username, $password)
+ {
+ if (! ldap_bind($ldap, $username, $password)) {
+ throw new ClientException('Unable to perform anonymous binding');
+ }
+
+ return true;
+ }
+}
diff --git a/app/Core/Ldap/ClientException.php b/app/Core/Ldap/ClientException.php
new file mode 100644
index 00000000..a0f9f842
--- /dev/null
+++ b/app/Core/Ldap/ClientException.php
@@ -0,0 +1,15 @@
+<?php
+
+namespace Kanboard\Core\Ldap;
+
+use Exception;
+
+/**
+ * LDAP Client Exception
+ *
+ * @package ldap
+ * @author Frederic Guillot
+ */
+class ClientException extends Exception
+{
+}
diff --git a/app/Core/Ldap/Query.php b/app/Core/Ldap/Query.php
new file mode 100644
index 00000000..1c34fa10
--- /dev/null
+++ b/app/Core/Ldap/Query.php
@@ -0,0 +1,95 @@
+<?php
+
+namespace Kanboard\Core\Ldap;
+
+/**
+ * LDAP Query
+ *
+ * @package ldap
+ * @author Frederic Guillot
+ */
+class Query
+{
+ /**
+ * Query result
+ *
+ * @access private
+ * @var array
+ */
+ private $entries = array();
+
+ /**
+ * Constructor
+ *
+ * @access public
+ * @param array $entries
+ */
+ public function __construct(array $entries = array())
+ {
+ $this->entries = $entries;
+ }
+
+ /**
+ * Execute query
+ *
+ * @access public
+ * @param resource $ldap
+ * @param string $baseDn
+ * @param string $filter
+ * @param array $attributes
+ * @return Query
+ */
+ public function execute($ldap, $baseDn, $filter, array $attributes)
+ {
+ $sr = ldap_search($ldap, $baseDn, $filter, $attributes);
+ if ($sr === false) {
+ return $this;
+ }
+
+ $entries = ldap_get_entries($ldap, $sr);
+ if ($entries === false || count($entries) === 0 || $entries['count'] == 0) {
+ return $this;
+ }
+
+ $this->entries = $entries;
+
+ return $this;
+ }
+
+ /**
+ * Return true if the query returned a result
+ *
+ * @access public
+ * @return boolean
+ */
+ public function hasResult()
+ {
+ return ! empty($this->entries);
+ }
+
+ /**
+ * Return subset of entries
+ *
+ * @access public
+ * @param string $key
+ * @param mixed $default
+ * @return array
+ */
+ public function getAttribute($key, $default = null)
+ {
+ return isset($this->entries[0][$key]) ? $this->entries[0][$key] : $default;
+ }
+
+ /**
+ * Return one entry from a list of entries
+ *
+ * @access public
+ * @param string $key Key
+ * @param string $default Default value if key not set in entry
+ * @return string
+ */
+ public function getAttributeValue($key, $default = '')
+ {
+ return isset($this->entries[0][$key][0]) ? $this->entries[0][$key][0] : $default;
+ }
+}
diff --git a/app/Core/Ldap/User.php b/app/Core/Ldap/User.php
new file mode 100644
index 00000000..e44a4dda
--- /dev/null
+++ b/app/Core/Ldap/User.php
@@ -0,0 +1,178 @@
+<?php
+
+namespace Kanboard\Core\Ldap;
+
+/**
+ * LDAP User
+ *
+ * @package ldap
+ * @author Frederic Guillot
+ */
+class User
+{
+ /**
+ * Query
+ *
+ * @access private
+ * @var Query
+ */
+ private $query;
+
+ /**
+ * Constructor
+ *
+ * @access public
+ * @param Query $query
+ */
+ public function __construct(Query $query = null)
+ {
+ $this->query = $query ?: new Query;
+ }
+
+ /**
+ * Get user profile
+ *
+ * @access public
+ * @param resource $ldap
+ * @param string $baseDn
+ * @param string $query
+ * @return array
+ */
+ public function getProfile($ldap, $baseDn, $query)
+ {
+ $this->query->execute($ldap, $baseDn, $query, $this->getAttributes());
+ $profile = array();
+
+ if ($this->query->hasResult()) {
+ $profile = $this->prepareProfile();
+ }
+
+ return $profile;
+ }
+
+ /**
+ * Build user profile
+ *
+ * @access private
+ * @return boolean|array
+ */
+ private function prepareProfile()
+ {
+ return array(
+ 'ldap_id' => $this->query->getAttribute('dn', ''),
+ 'username' => $this->query->getAttributeValue($this->getAttributeUsername()),
+ 'name' => $this->query->getAttributeValue($this->getAttributeName()),
+ 'email' => $this->query->getAttributeValue($this->getAttributeEmail()),
+ 'is_admin' => (int) $this->isMemberOf($this->query->getAttribute($this->getAttributeGroup(), array()), $this->getGroupAdminDn()),
+ 'is_project_admin' => (int) $this->isMemberOf($this->query->getAttribute($this->getAttributeGroup(), array()), $this->getGroupProjectAdminDn()),
+ 'is_ldap_user' => 1,
+ );
+ }
+
+ /**
+ * Check group membership
+ *
+ * @access public
+ * @param array $group_entries
+ * @param string $group_dn
+ * @return boolean
+ */
+ public function isMemberOf(array $group_entries, $group_dn)
+ {
+ if (! isset($group_entries['count']) || empty($group_dn)) {
+ return false;
+ }
+
+ for ($i = 0; $i < $group_entries['count']; $i++) {
+ if ($group_entries[$i] === $group_dn) {
+ return true;
+ }
+ }
+
+ return false;
+ }
+
+ /**
+ * Ge the list of attributes to fetch when reading the LDAP user entry
+ *
+ * Must returns array with index that start at 0 otherwise ldap_search returns a warning "Array initialization wrong"
+ *
+ * @access public
+ * @return array
+ */
+ public function getAttributes()
+ {
+ return array_values(array_filter(array(
+ $this->getAttributeUsername(),
+ $this->getAttributeName(),
+ $this->getAttributeEmail(),
+ $this->getAttributeGroup(),
+ )));
+ }
+
+ /**
+ * Get LDAP account id attribute
+ *
+ * @access public
+ * @return string
+ */
+ public function getAttributeUsername()
+ {
+ return LDAP_ACCOUNT_ID;
+ }
+
+ /**
+ * Get LDAP account email attribute
+ *
+ * @access public
+ * @return string
+ */
+ public function getAttributeEmail()
+ {
+ return LDAP_ACCOUNT_EMAIL;
+ }
+
+ /**
+ * Get LDAP account name attribute
+ *
+ * @access public
+ * @return string
+ */
+ public function getAttributeName()
+ {
+ return LDAP_ACCOUNT_FULLNAME;
+ }
+
+ /**
+ * Get LDAP account memberof attribute
+ *
+ * @access public
+ * @return string
+ */
+ public function getAttributeGroup()
+ {
+ return LDAP_ACCOUNT_MEMBEROF;
+ }
+
+ /**
+ * Get LDAP admin group DN
+ *
+ * @access public
+ * @return string
+ */
+ public function getGroupAdminDn()
+ {
+ return LDAP_GROUP_ADMIN_DN;
+ }
+
+ /**
+ * Get LDAP project admin group DN
+ *
+ * @access public
+ * @return string
+ */
+ public function getGroupProjectAdminDn()
+ {
+ return LDAP_GROUP_PROJECT_ADMIN_DN;
+ }
+}
generated by cgit v1.2.3 (git 2.46.0) at 2024-11-23 08:38:01 +0000