Merge remote-tracking branch 'origin/5.0' into bootmanager-vender

[bootmanager.git] / nodeconfig / boot / index.php

diff --git a/nodeconfig/boot/index.php b/nodeconfig/boot/index.php
new file mode 100755 (executable)
index 0000000..97500ac
--- /dev/null
+++ b/nodeconfig/boot/index.php
@@ -0,0 +1,80 @@
+<?php
+
+//
+// Returns node boot script
+//
+// Mark Huang <mlhuang@cs.princeton.edu>
+// Copyright (C) 2006 The Trustees of Princeton University
+//
+
+// Get admin API handle
+require_once 'plc_api.php';
+global $adm;
+
+// location for signed scripts
+$bmdir="/var/www/html/boot";
+$bmext=".sh.sgn";
+
+$candidates = array();
+
+// Look up the node
+$interfaces = $adm->GetInterfaces(array('ip' => $_SERVER['REMOTE_ADDR']));
+if (!empty($interfaces)) {
+  $nodes = $adm->GetNodes(array($interfaces[0]['node_id']));
+  if (!empty($nodes)) {
+    $node = $nodes[0];
+  }
+}
+
+if (isset($node)) {
+  // Allow very old nodes that do not have a node key in their
+  // configuration files to use their "boot nonce" instead. The boot
+  // nonce is a random value generated by the node itself and POSTed
+  // by the Boot CD when it requests the Boot Manager. This is
+  // obviously not very secure, so we only allow it to be used if the
+  // requestor IP is the same as the IP address we have on record for
+  // the node.
+
+  // 3.x CDs post 'version', 2.x CDs post 'id'.
+  if (!empty($_REQUEST['version'])) {
+    $version = trim($_REQUEST['version']);
+  } elseif (!empty($_REQUEST['id'])) {
+    $version = trim($_REQUEST['id']);
+  } else {
+    $version = "2.0";
+  }
+
+  if (empty($node['key']) && !empty($_REQUEST['nonce'])) {
+    // 3.x CDs post the boot nonce in ASCII hex. 2.x CDs post it in binary.
+    if (strstr($version, "2.0") === FALSE) {
+      // 3.x CDs post a trailing newline...sigh
+      $nonce = trim($_REQUEST['nonce']);
+    } else {
+      $nonce = bin2hex($_REQUEST['nonce']);
+    }
+    $adm->UpdateNode($node['node_id'], array('boot_nonce' => $nonce));
+  }
+
+  // Custom bootmanager for the node, e.g.
+  // planetlab-1.cs.princeton.edu_bootmanager.sh.sgn
+  $candidates [] = "bootmanager" . "_" . strtolower($node['hostname']);
+
+  // Custom bootmanager for the deployment tag, e.g.
+  $deployment = $adm->GetNodeDeployment($node['node_id']);
+  if ( ! empty ($deployment) ) {
+    $candidates[] = "bootmanager" . "_" . $deployment;
+  }
+}
+
+// Default bootmanager
+$candidates[] = "bootmanager_regular";
+
+foreach ($candidates as $bootmanager) {
+  $candidate=$bmdir . "/" . $bootmanager . $bmext ;
+  if (file_exists($candidate)) {
+    readfile($candidate);
+    exit();
+  }
+}
+
+?>