From 3fb99a5e8c229885602198bea4dce26bcf0fcc4f Mon Sep 17 00:00:00 2001
From: Simon Rettberg
Date: Wed, 10 Jun 2020 17:12:02 +0200
Subject: [serversetup-bwlp-ipxe] Start refactoring ipxe script generator

This is WIP. Mostly restored all the old functionality.
Boot entries are fetched when selected, not embedded in the main script,
so password protection is a bit stronger.
Hopefully allows for other script generators in the future.
---
 .../serversetup-bwlp-ipxe/inc/bootentry.inc.php    | 149 ++++++++++-----------
 1 file changed, 69 insertions(+), 80 deletions(-)

(limited to 'modules-available/serversetup-bwlp-ipxe/inc/bootentry.inc.php')

diff --git a/modules-available/serversetup-bwlp-ipxe/inc/bootentry.inc.php b/modules-available/serversetup-bwlp-ipxe/inc/bootentry.inc.php
index e89380ce..7b8fb4b5 100644
--- a/modules-available/serversetup-bwlp-ipxe/inc/bootentry.inc.php
+++ b/modules-available/serversetup-bwlp-ipxe/inc/bootentry.inc.php
@@ -14,7 +14,11 @@ abstract class BootEntry
 
 	public abstract function supportsMode($mode);
 
-	public abstract function toScript($failLabel, $mode);
+	/**
+	 * @param ScriptBuilderBase $builder
+	 * @return string
+	 */
+	public abstract function toScript($builder);
 
 	public abstract function toArray();
 
@@ -54,6 +58,9 @@ abstract class BootEntry
 		if ($module === '.exec') {
 			return new StandardBootEntry($data);
 		}
+		if ($module === '.special') {
+			return new SpecialBootEntry($data);
+		}
 		return null;
 	}
 
@@ -84,7 +91,7 @@ abstract class BootEntry
 
 	public static function newCustomBootEntry($initData)
 	{
-		if (empty($initData['script']))
+		if (!is_array($initData) || empty($initData))
 			return null;
 		return new CustomBootEntry($initData);
 	}
@@ -135,8 +142,10 @@ class StandardBootEntry extends BootEntry
 	 * @var ExecData same for EFI
 	 */
 	protected $efi;
-
-	protected $arch; // Constants below
+	/**
+	 * @var string BootEntry Constants above
+	 */
+	protected $arch;
 
 	const KEYS = ['executable', 'initRd', 'commandLine', 'replace', 'imageFree', 'autoUnload', 'resetConsole', 'dhcpOptions'];
 
@@ -257,74 +266,13 @@ class StandardBootEntry extends BootEntry
 		return false;
 	}
 
-	public function toScript($failLabel, $mode)
+	public function toScript($builder)
 	{
-		if (!$this->supportsMode($mode)) {
-			return "prompt Entry doesn't have an executable for mode $mode\n";
-		}
-		if ($this->arch === BootEntry::AGNOSTIC || $mode == BootEntry::BIOS) {
-			$entry = $this->pcbios;
-		} else {
-			$entry = $this->efi;
-		}
-		$entry->sanitize();
-
-		$script = '';
-		if ($entry->resetConsole) {
-			$script .= "console ||\n";
-		}
-		if ($entry->imageFree) {
-			$script .= "imgfree ||\n";
-		}
-		foreach ($entry->dhcpOptions as $opt) {
-			if (empty($opt['value'])) {
-				$val = '${}';
-			} else {
-				if (empty($opt['hex'])) {
-					$val = bin2hex($opt['value']);
-				} else {
-					$val = $opt['value'];
-				}
-				preg_match_all('/[0-9a-f]{2}/', $val, $out);
-				$val = implode(':', $out[0]);
-			}
-			$script .= 'set net${idx}/' . $opt['opt'] . ':hex ' . $val
-				. ' || prompt Cannot override DHCP server option ' . $opt['opt'] . ". Press any key to continue anyways.\n";
-		}
-		$initrds = [];
-		if (!empty($entry->initRd)) {
-			foreach (array_values($entry->initRd) as $i => $initrd) {
-				if (empty($initrd))
-					continue;
-				$script .= "initrd --name initrd$i $initrd || goto $failLabel\n";
-				$initrds[] = "initrd$i";
-			}
-		}
-		$script .= "boot ";
-		if ($entry->autoUnload) {
-			$script .= "-a ";
-		}
-		if ($entry->replace) {
-			$script .= "-r ";
-		}
-		$script .= $entry->executable;
-		if (!empty($initrds)) {
-			if ($mode === BootEntry::BIOS) {
-				$script .= " initrd=" . implode(',', $initrds);
-			} else {
-				foreach ($initrds as $initrd) {
-					$script .= " initrd=$initrd";
-				}
-			}
-		}
-		if (!empty($entry->commandLine)) {
-			$script .= ' ' . $entry->commandLine;
-		}
-		$script .= " || goto $failLabel\n";
-		if ($entry->resetConsole) {
-			$script .= "goto start ||\n";
-		}
-		return $script;
+		if ($this->arch === BootEntry::AGNOSTIC) // Same as below, could construct fall-through but this is more clear
+			return $builder->execDataToScript($this->pcbios, null, null);
+		return $builder->execDataToScript(null,
+			$this->supportsMode(BootEntry::BIOS) ? $this->pcbios : null,
+			$this->supportsMode(BootEntry::EFI) ? $this->efi : null);
 	}
 
 	public function addFormFields(&$array)
@@ -347,12 +295,22 @@ class StandardBootEntry extends BootEntry
 
 class CustomBootEntry extends BootEntry
 {
-	protected $script;
+	/**
+	 * @var string iPXE
+	 */
+	protected $ipxe;
+
+	protected $bash;
+
+	protected $grub;
 
 	public function __construct($data)
 	{
-		if (is_array($data) && isset($data['script'])) {
-			$this->script = $data['script'];
+		if (is_array($data)) {
+			$this->ipxe = $data['script'] ?? ''; // LEGACY
+			foreach (['bash', 'grub'] as $key) {
+				$this->{$key} = $data[$key] ?? '';
+			}
 		}
 	}
 
@@ -361,22 +319,24 @@ class CustomBootEntry extends BootEntry
 		return true;
 	}
 
-	public function toScript($failLabel, $mode)
+	public function toScript($builder)
 	{
-		return str_replace('%fail%', $failLabel, $this->script) . "\n";
+		if ($builder instanceof ScriptBuilderIpxe)
+			return $this->ipxe;
+		return '';
 	}
 
 	public function addFormFields(&$array)
 	{
 		$array['entry'] = [
-			'script' => $this->script,
+			'script' => $this->ipxe,
 		];
 		$array['script_checked'] = 'checked';
 	}
 
 	public function toArray()
 	{
-		return ['script' => $this->script];
+		return ['script' => $this->ipxe];
 	}
 }
 
@@ -394,9 +354,10 @@ class MenuBootEntry extends BootEntry
 		return true;
 	}
 
-	public function toScript($failLabel, $mode)
+	public function toScript($builder)
 	{
-		return 'chain -ar ${self}&menuid=' . $this->menuId . ' || goto ' . $failLabel . "\n";
+		$menu = IPxeMenu::get($this->menuId);
+		return $builder->menuToScript($menu);
 	}
 
 	public function toArray()
@@ -409,3 +370,31 @@ class MenuBootEntry extends BootEntry
 	}
 }
 
+class SpecialBootEntry extends BootEntry
+{
+
+	private $type;
+
+	public function __construct($type)
+	{
+		$this->type = $type['type'] ?? $type;
+	}
+
+	public function supportsMode($mode)
+	{
+		return true;
+	}
+
+	public function toScript($builder)
+	{
+		return $builder->getSpecial($this->type);
+	}
+
+	public function toArray()
+	{
+		return [];
+	}
+
+	public function addFormFields(&$array) { }
+
+}
\ No newline at end of file
-- 
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