Merge branch 'concurrent-editing' into anon-userlist

Conflicts:
	src/controllers/Users.class.php

1 files changed, 164 insertions, 0 deletions

diff --git a/src/lib/DB.class.php b/src/lib/DB.class.php
new file mode 100644
index 0000000..5954726
--- /dev/null
+++ b/src/lib/DB.class.php
@@ -0,0 +1,164 @@
+<?php
+
+require_once('Auth.class.php');
+require_once('Login.class.php');
+
+class DB {
+	public static function set($table, $unit, $key, $value, $orig_value) {
+		$value_base = $orig_value;
+
+		$doit = true;
+		$forked = false;
+		$have_old = ($value_base!==null);
+		if ($have_old) {
+			$we_changed_it = $value_base != $value;
+			if ($we_changed_it) {
+				$value_fork = $this->getConfString($key);
+				$someone_else_changed_it =
+					$value_fork != $value_base;
+				if ($someone_else_changed_it) {
+					if ($value == $value_fork) {
+						// we might as well not have
+						$we_changed_it = false;
+					} else {
+						$forked = true;
+					}
+				}
+			}
+			if (!$we_changed_it) {
+				$doit = false;// nothing to do
+			}
+		}
+		if ($doit) {
+			return $this->setConf($key, $value);
+		}
+		if ($forked) {
+			return $value_fork;
+		}
+	}
+	
+	public static function get($table, $unit, $key) {
+		switch ($table) {
+		case 'conf':
+		case 'plugins':
+			return self::admin_get($unit, $key);
+			break;
+		case 'users':
+			return self::user_get($unit, $key);
+			break;
+		default:
+			return false;
+		}
+	}
+	public static function raw_set($table, $unit, $key, $value) {
+		switch ($table) {
+		case 'conf':
+		case 'plugins':
+			return self::admin_get($unit, $key, $value);
+			break;
+		case 'users':
+			return self::user_set($unit, $key, $value);
+			break;
+		default:
+			return false;
+		}
+	}
+	
+	private static function user_get($uid, $key) {
+		$user = Auth::getObj($uid);
+		$logged_in_user = Auth::getObj(Login::isLoggedIn());
+		
+		$post_key = $key."[$uid]";
+		@$value = $_POST[$post_key];
+		$editable = $user->canEdit();
+		
+		switch ($key) {
+		case 'auth_uid':
+			$value = $user->getUID();
+			$editable = false;
+			break;
+		case 'auth_name':
+			$value = $user->getName();
+			break;
+		case 'auth_user':
+			$editable = $editable && $logged_in_user->isAdmin();
+			$value = $user->isUser()?'true':'false';
+			break;
+		case 'auth_admin':
+			$editable = $editable && $logged_in_user->isAdmin();
+			$value = $user->isAdmin()?'true':'false';
+			break;
+		case 'auth_delete':
+			$editable = $editable && $logged_in_user->isAdmin();
+			$value = 'false';
+			break;
+		default:
+			$value = $user->getConf($key);
+			if ($value===false) $value='';
+			break;
+		}
+		
+		return array('value'=>$value,
+		             'post_key'=>$post_key,
+		             'editable'=>$editable);
+	}
+	private static function user_set($uid, $key, $value) {
+		$user = Auth::getObj($uid);
+		
+		switch ($key) {
+		case 'auth_uid':
+			return false;
+			break;
+		case 'auth_name':
+			return $user->setName($value);
+			break;
+		case 'auth_user':
+			return $user->setUser($value=='true');
+			break;
+		case 'auth_admin':
+			return $user->setAdmin($value=='true');
+			break;
+		case 'auth_delete':
+			if ($value=='true') return $user->delete();
+		default: 
+			return $user->setConf($key, $value);
+			break;
+		}
+	}
+	
+	private static function admin_get($plugin, $key) {
+		global $mm; $db = $mm->database();
+		$user = Auth::getObj(Login::isLoggedIn());
+		if ($user->isAdmin()) {
+			$editable = true;
+			switch ($plugin) {
+			case 'system':
+				$value = $db->getSysConf($key);
+				break;
+			default:
+				$value =  $db->getPluginConf($plugin, $key);
+				break;
+			}
+		} else {
+			$editable = false;
+			$value = false;
+		}
+		
+		return array('value'=>$value,
+		             'post_key'=>'to be implemented',// FIXME
+		             'editable'=>$editable);
+	}
+	private static function admin_set($plugin, $key, $value) {
+		global $mm; $db = $mm->database();
+		$user = Auth::getObj(Login::isLoggedIn());
+		if (!$user->isAdmin()) {
+			return false;
+		}
+		switch ($plugin) {
+		case 'system':
+			return $db->setSysConf($key, $value);
+		default:
+			return $db->setPluginConf($plugin, $key, $value);
+		}
+	}
+}