Initial Import

git-svn-id: http://svn.automattic.com/wordpress-mu/trunk@1 7be80a69-a1ef-0310-a953-fb0f7c49ff36

1 files changed, 263 insertions, 0 deletions

diff --git a/wp-inst/wp-includes/capabilities.php b/wp-inst/wp-includes/capabilities.php
new file mode 100644
index 0000000..af5fb58
--- /dev/null
+++ b/wp-inst/wp-includes/capabilities.php
@@ -0,0 +1,263 @@
+<?php
+
+class WP_Roles {
+	var $roles;
+
+	var $role_objects = array();
+	var $role_names = array();
+	var $role_key;
+
+	function WP_Roles() {
+		global $table_prefix;
+		$this->role_key = $table_prefix . 'user_roles';
+
+		$this->roles = get_option($this->role_key);
+
+		if ( empty($this->roles) )
+			return;
+
+		foreach ($this->roles as $role => $data) {
+			$this->role_objects[$role] = new WP_Role($role, $this->roles[$role]['capabilities']);
+			$this->role_names[$role] = $this->roles[$role]['name'];
+		}
+	}
+
+	function add_role($role, $capabilities, $display_name) {
+		$this->roles[$role] = array('name' => $display_name,
+																'capabilities' => $capabilities);
+		update_option($this->role_key, $this->roles);
+		$this->role_objects[$role] = new WP_Role($role, $capabilities);
+		$this->role_names[$role] = $display_name;
+	}
+	
+	function remove_role($role) {
+		if ( ! isset($this->role_objects[$role]) )
+			return;
+		
+		unset($this->role_objects[$role]);
+		unset($this->role_names[$role]);
+		unset($this->roles[$role]);
+		
+		update_option($this->role_key, $this->roles);
+	}
+
+	function add_cap($role, $cap, $grant) {
+		$this->roles[$role]['capabilities'][$cap] = $grant;
+		update_option($this->role_key, $this->roles);
+	}
+
+	function remove_cap($role, $cap) {
+		unset($this->roles[$role]['capabilities'][$cap]);
+		update_option($this->role_key, $this->roles);
+	}
+
+	function &get_role($role) {
+		if ( isset($this->role_objects[$role]) )
+			return $this->role_objects[$role];
+		else
+			return null;
+	}
+
+	function get_names() {
+		return $this->role_names;
+	}
+
+	function is_role($caps)
+	{
+		return empty($this->role_names[$cap]);
+	}	
+}
+
+class WP_Role {
+	var $name;
+	var $capabilities;
+
+	function WP_Role($role, $capabilities) {
+		$this->name = $role;
+		$this->capabilities = $capabilities;
+	}
+
+	function add_cap($cap, $grant) {
+		global $wp_roles;
+
+		$this->capabilities[$cap] = $grant;
+		$wp_roles->add_cap($this->name, $cap);
+	}
+
+	function remove_cap($cap) {
+		global $wp_roles;
+
+		unset($this->capabilities[$cap]);
+		$wp_roles->remove_cap($this->name, $cap);
+	}
+
+	function has_cap($cap) {
+		if ( !empty($this->capabilities[$cap]) )
+			return $this->capabilities[$cap];
+		else
+			return false;
+	}
+
+}
+
+class WP_User {
+	var $data;
+	var $id;
+	var $caps;
+	var $cap_key;
+	var $roles;
+	var $allcaps;
+
+	function WP_User($id) {
+		global $wp_roles, $table_prefix;
+		$this->id = $id;
+		$this->data = get_userdata($id);
+		$this->cap_key = $table_prefix . 'capabilities';
+		$this->caps = &$this->data->{$this->cap_key};
+		$this->get_role_caps();
+	}
+	
+	function get_role_caps() {
+		global $wp_roles;
+		//Filter out caps that are not role names and assign to $this->roles
+		if(is_array($this->caps))
+			$this->roles = array_filter($this->caps, array(&$wp_roles, 'is_role'));
+
+		//Build $allcaps from role caps, overlay user's $caps
+		$this->allcaps = array();
+		foreach($this->roles as $role => $value) {
+			$role = $wp_roles->get_role($role);
+			$this->allcaps = array_merge($this->allcaps, $role->capabilities);
+		}
+		$this->allcaps = array_merge($this->allcaps, $this->caps);
+	}
+	
+	function add_role($role) {
+		$this->caps[$role] = true;
+		update_usermeta($this->id, $this->cap_key, $this->caps);
+		$this->get_role_caps();
+		$this->update_user_level_from_caps();
+	}
+	
+	function remove_role($role) {
+		if(!empty($this->roles[$role]) && (count($this->roles) > 1))
+		unset($this->caps[$cap]);
+		update_usermeta($this->id, $this->cap_key, $this->caps);
+		$this->get_role_caps();
+	}
+	
+	function set_role($role) {
+		foreach($this->roles as $oldrole => $value)
+			unset($this->caps[$oldrole]);
+		$this->caps[$role] = true;
+		$this->roles = array($role => true);
+		update_usermeta($this->id, $this->cap_key, $this->caps);
+		$this->get_role_caps();
+		$this->update_user_level_from_caps();
+	}
+
+	function level_reduction($max, $item) {
+	    if(preg_match('/^level_(10|[0-9])$/i', $item, $matches)) {
+	        $level = intval($matches[1]);
+	        return max($max, $level);
+	    } else {
+	        return $max;
+	    }
+	}
+	
+	function update_user_level_from_caps() {
+	    global $table_prefix;
+	    $this->data->user_level = array_reduce(array_keys($this->allcaps), 	array(&$this, 'level_reduction'), 0);
+	    update_usermeta($this->id, $table_prefix.'user_level', $this->data->user_level);
+	}
+	
+	function add_cap($cap, $grant = true) {
+		$this->caps[$cap] = $grant;
+		update_usermeta($this->id, $this->cap_key, $this->caps);
+	}
+
+	function remove_cap($cap) {
+		if(!empty($this->roles[$role])) return;
+		unset($this->caps[$cap]);
+		update_usermeta($this->id, $this->cap_key, $this->caps);
+	}
+	
+	//has_cap(capability_or_role_name) or
+	//has_cap('edit_post', post_id)
+	function has_cap($cap) {
+		global $wp_roles;
+
+		if ( is_numeric($cap) )
+			$cap = $this->translate_level_to_cap($cap);
+		
+		$args = array_slice(func_get_args(), 1);
+		$args = array_merge(array($cap, $this->id), $args);
+		$caps = call_user_func_array('map_meta_cap', $args);
+		// Must have ALL requested caps
+		foreach ($caps as $cap) {
+			//echo "Checking cap $cap<br/>";
+			if(empty($this->allcaps[$cap]) || !$this->allcaps[$cap])
+				return false;
+		}
+
+		return true;
+	}
+
+	function translate_level_to_cap($level) {
+		return 'level_' . $level;
+	}
+
+}
+
+// Map meta capabilities to primitive capabilities.
+function map_meta_cap($cap, $user_id) {
+	$args = array_slice(func_get_args(), 2);
+	$caps = array();
+
+	switch ($cap) {
+		// edit_post breaks down to edit_posts, edit_published_posts, or
+		// edit_others_posts
+	case 'edit_post':
+		$author_data = get_userdata($user_id);
+		//echo "post ID: {$args[0]}<br/>";
+		$post = get_post($args[0]);
+		$post_author_data = get_userdata($post->post_author);
+		//echo "current user id : $user_id, post author id: " . $post_author_data->ID . "<br/>";
+		// If the user is the author...
+		if ($user_id == $post_author_data->ID) {
+			// If the post is published...
+			if ($post->post_status == 'publish')
+				$caps[] = 'edit_published_posts';
+			else
+				// If the post is draft...
+				$caps[] = 'edit_posts';
+		} else {
+			// The user is trying to edit someone else's post.
+			$caps[] = 'edit_others_posts';
+			// The post is published, extra cap required.
+			if ($post->post_status == 'publish')
+				$caps[] = 'edit_published_posts';
+		}
+		break;
+	default:
+		// If no meta caps match, return the original cap.
+		$caps[] = $cap;
+	}
+
+	return $caps;
+}
+
+// Capability checking wrapper around the global $current_user object.
+function current_user_can($capability) {
+	global $current_user;
+
+	$args = array_slice(func_get_args(), 1);
+	$args = array_merge(array($capability), $args);
+
+	if ( empty($current_user) )
+		return false;
+
+	return call_user_func_array(array(&$current_user, 'has_cap'), $args);
+}
+
+?>