438 lines
11 KiB
PHP
438 lines
11 KiB
PHP
<?php
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class WP_Roles {
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var $roles;
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var $role_objects = array();
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var $role_names = array();
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var $role_key;
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function WP_Roles() {
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global $table_prefix;
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$this->role_key = $table_prefix . 'user_roles';
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$this->roles = get_option($this->role_key);
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if ( empty($this->roles) )
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return;
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foreach ($this->roles as $role => $data) {
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$this->role_objects[$role] = new WP_Role($role, $this->roles[$role]['capabilities']);
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$this->role_names[$role] = $this->roles[$role]['name'];
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}
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}
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function add_role($role, $display_name, $capabilities = '') {
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if ( isset($this->roles[$role]) )
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return;
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$this->roles[$role] = array(
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'name' => $display_name,
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'capabilities' => $capabilities);
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update_option($this->role_key, $this->roles);
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$this->role_objects[$role] = new WP_Role($role, $capabilities);
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$this->role_names[$role] = $display_name;
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return $this->role_objects[$role];
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}
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function remove_role($role) {
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if ( ! isset($this->role_objects[$role]) )
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return;
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unset($this->role_objects[$role]);
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unset($this->role_names[$role]);
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unset($this->roles[$role]);
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update_option($this->role_key, $this->roles);
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}
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function add_cap($role, $cap, $grant = true) {
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$this->roles[$role]['capabilities'][$cap] = $grant;
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update_option($this->role_key, $this->roles);
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}
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function remove_cap($role, $cap) {
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unset($this->roles[$role]['capabilities'][$cap]);
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update_option($this->role_key, $this->roles);
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}
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function &get_role($role) {
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if ( isset($this->role_objects[$role]) )
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return $this->role_objects[$role];
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else
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return null;
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}
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function get_names() {
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return $this->role_names;
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}
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function is_role($role)
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{
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return isset($this->role_names[$role]);
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}
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}
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class WP_Role {
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var $name;
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var $capabilities;
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function WP_Role($role, $capabilities) {
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$this->name = $role;
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$this->capabilities = $capabilities;
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}
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function add_cap($cap, $grant = true) {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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$this->capabilities[$cap] = $grant;
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$wp_roles->add_cap($this->name, $cap, $grant);
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}
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function remove_cap($cap) {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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unset($this->capabilities[$cap]);
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$wp_roles->remove_cap($this->name, $cap);
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}
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function has_cap($cap) {
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$capabilities = apply_filters('role_has_cap', $this->capabilities, $cap, $this->name);
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if ( !empty($capabilities[$cap]) )
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return $capabilities[$cap];
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else
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return false;
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}
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}
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class WP_User {
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var $data;
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var $id = 0;
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var $caps = array();
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var $cap_key;
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var $roles = array();
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var $allcaps = array();
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function WP_User($id, $name = '') {
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global $table_prefix;
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if ( empty($id) && empty($name) )
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return;
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if ( ! is_numeric($id) ) {
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$name = $id;
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$id = 0;
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}
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if ( ! empty($id) )
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$this->data = get_userdata($id);
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else
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$this->data = get_userdatabylogin($name);
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if ( empty($this->data->ID) )
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return;
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foreach (get_object_vars($this->data) as $key => $value) {
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$this->{$key} = $value;
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}
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$this->id = $this->ID;
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$this->cap_key = $table_prefix . 'capabilities';
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$this->caps = &$this->{$this->cap_key};
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if ( ! is_array($this->caps) )
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$this->caps = array();
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$this->get_role_caps();
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}
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function get_role_caps() {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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//Filter out caps that are not role names and assign to $this->roles
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if(is_array($this->caps))
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$this->roles = array_filter(array_keys($this->caps), array(&$wp_roles, 'is_role'));
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//Build $allcaps from role caps, overlay user's $caps
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$this->allcaps = array();
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foreach($this->roles as $role) {
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$role = $wp_roles->get_role($role);
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$this->allcaps = array_merge($this->allcaps, $role->capabilities);
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}
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$this->allcaps = array_merge($this->allcaps, $this->caps);
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}
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function add_role($role) {
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$this->caps[$role] = true;
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update_usermeta($this->id, $this->cap_key, $this->caps);
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$this->get_role_caps();
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$this->update_user_level_from_caps();
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}
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function remove_role($role) {
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if ( empty($this->roles[$role]) || (count($this->roles) <= 1) )
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return;
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unset($this->caps[$role]);
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update_usermeta($this->id, $this->cap_key, $this->caps);
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$this->get_role_caps();
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}
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function set_role($role) {
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foreach($this->roles as $oldrole)
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unset($this->caps[$oldrole]);
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$this->caps[$role] = true;
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$this->roles = array($role => true);
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update_usermeta($this->id, $this->cap_key, $this->caps);
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$this->get_role_caps();
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$this->update_user_level_from_caps();
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}
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function level_reduction($max, $item) {
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if(preg_match('/^level_(10|[0-9])$/i', $item, $matches)) {
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$level = intval($matches[1]);
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return max($max, $level);
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} else {
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return $max;
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}
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}
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function update_user_level_from_caps() {
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global $table_prefix;
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$this->user_level = array_reduce(array_keys($this->allcaps), array(&$this, 'level_reduction'), 0);
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update_usermeta($this->id, $table_prefix.'user_level', $this->user_level);
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}
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function add_cap($cap, $grant = true) {
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$this->caps[$cap] = $grant;
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update_usermeta($this->id, $this->cap_key, $this->caps);
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}
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function remove_cap($cap) {
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if ( empty($this->caps[$cap]) ) return;
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unset($this->caps[$cap]);
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update_usermeta($this->id, $this->cap_key, $this->caps);
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}
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//has_cap(capability_or_role_name) or
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//has_cap('edit_post', post_id)
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function has_cap($cap) {
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if ( is_numeric($cap) )
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$cap = $this->translate_level_to_cap($cap);
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$args = array_slice(func_get_args(), 1);
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$args = array_merge(array($cap, $this->id), $args);
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$caps = call_user_func_array('map_meta_cap', $args);
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// Must have ALL requested caps
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$capabilities = apply_filters('user_has_cap', $this->allcaps, $caps, $args);
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foreach ($caps as $cap) {
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//echo "Checking cap $cap<br/>";
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if(empty($capabilities[$cap]) || !$capabilities[$cap])
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return false;
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}
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return true;
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}
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function translate_level_to_cap($level) {
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return 'level_' . $level;
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}
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}
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// Map meta capabilities to primitive capabilities.
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function map_meta_cap($cap, $user_id) {
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$args = array_slice(func_get_args(), 2);
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$caps = array();
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switch ($cap) {
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case 'delete_post':
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$author_data = get_userdata($user_id);
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//echo "post ID: {$args[0]}<br/>";
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$post = get_post($args[0]);
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if ( 'page' == $post->post_type ) {
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$args = array_merge(array('delete_page', $user_id), $args);
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return call_user_func_array('map_meta_cap', $args);
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}
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$post_author_data = get_userdata($post->post_author);
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//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br/>";
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// If the user is the author...
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if ($user_id == $post_author_data->ID) {
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// If the post is published...
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if ($post->post_status == 'publish')
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$caps[] = 'delete_published_posts';
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else
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// If the post is draft...
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$caps[] = 'delete_posts';
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} else {
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// The user is trying to edit someone else's post.
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$caps[] = 'delete_others_posts';
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// The post is published, extra cap required.
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if ($post->post_status == 'publish')
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$caps[] = 'delete_published_posts';
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}
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break;
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case 'delete_page':
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$author_data = get_userdata($user_id);
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//echo "post ID: {$args[0]}<br/>";
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$page = get_page($args[0]);
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$page_author_data = get_userdata($post->post_author);
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//echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br/>";
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// If the user is the author...
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if ($user_id == $page_author_data->ID) {
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// If the page is published...
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if ($page->post_status == 'publish')
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$caps[] = 'delete_published_pages';
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else
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// If the page is draft...
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$caps[] = 'delete_pages';
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} else {
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// The user is trying to edit someone else's page.
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$caps[] = 'delete_others_pages';
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// The page is published, extra cap required.
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if ($page->post_status == 'publish')
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$caps[] = 'delete_published_pages';
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}
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break;
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// edit_post breaks down to edit_posts, edit_published_posts, or
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// edit_others_posts
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case 'edit_post':
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$author_data = get_userdata($user_id);
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//echo "post ID: {$args[0]}<br/>";
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$post = get_post($args[0]);
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if ( 'page' == $post->post_type ) {
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$args = array_merge(array('edit_page', $user_id), $args);
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return call_user_func_array('map_meta_cap', $args);
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}
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$post_author_data = get_userdata($post->post_author);
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//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br/>";
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// If the user is the author...
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if ($user_id == $post_author_data->ID) {
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// If the post is published...
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if ($post->post_status == 'publish')
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$caps[] = 'edit_published_posts';
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else
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// If the post is draft...
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$caps[] = 'edit_posts';
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} else {
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// The user is trying to edit someone else's post.
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$caps[] = 'edit_others_posts';
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// The post is published, extra cap required.
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if ($post->post_status == 'publish')
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$caps[] = 'edit_published_posts';
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}
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break;
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case 'edit_page':
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$author_data = get_userdata($user_id);
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//echo "post ID: {$args[0]}<br/>";
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$page = get_page($args[0]);
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$page_author_data = get_userdata($post->post_author);
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//echo "current user id : $user_id, page author id: " . $page_author_data->ID . "<br/>";
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// If the user is the author...
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if ($user_id == $page_author_data->ID) {
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// If the page is published...
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if ($page->post_status == 'publish')
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$caps[] = 'edit_published_pages';
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else
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// If the page is draft...
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$caps[] = 'edit_pages';
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} else {
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// The user is trying to edit someone else's page.
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$caps[] = 'edit_others_pages';
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// The page is published, extra cap required.
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if ($page->post_status == 'publish')
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$caps[] = 'edit_published_pages';
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}
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break;
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case 'read_post':
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$post = get_post($args[0]);
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if ( 'page' == $post->post_type ) {
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$args = array_merge(array('read_page', $user_id), $args);
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return call_user_func_array('map_meta_cap', $args);
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}
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if ( 'private' != $post->post_status ) {
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$caps[] = 'read';
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break;
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}
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$author_data = get_userdata($user_id);
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$post_author_data = get_userdata($post->post_author);
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if ($user_id == $post_author_data->ID)
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$caps[] = 'read';
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else
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$caps[] = 'read_private_posts';
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break;
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case 'read_page':
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$page = get_page($args[0]);
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if ( 'private' != $page->post_status ) {
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$caps[] = 'read';
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break;
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}
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$author_data = get_userdata($user_id);
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$page_author_data = get_userdata($post->post_author);
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if ($user_id == $page_author_data->ID)
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$caps[] = 'read';
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else
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$caps[] = 'read_private_pages';
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break;
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default:
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// If no meta caps match, return the original cap.
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$caps[] = $cap;
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}
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return $caps;
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}
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// Capability checking wrapper around the global $current_user object.
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function current_user_can($capability) {
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$current_user = wp_get_current_user();
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$args = array_slice(func_get_args(), 1);
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$args = array_merge(array($capability), $args);
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if ( empty($current_user) )
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return false;
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return call_user_func_array(array(&$current_user, 'has_cap'), $args);
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}
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// Convenience wrappers around $wp_roles.
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function get_role($role) {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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return $wp_roles->get_role($role);
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}
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function add_role($role, $display_name, $capabilities = '') {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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return $wp_roles->add_role($role, $display_name, $capabilities);
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}
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function remove_role($role) {
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global $wp_roles;
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if ( ! isset($wp_roles) )
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$wp_roles = new WP_Roles();
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return $wp_roles->remove_role($role);
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}
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?>
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