From 2a3663a463da917276c9ffac65861092d91e54d4 Mon Sep 17 00:00:00 2001
From: "Kay Marquardt (Gnadelwartz)" <kay@rrr.de>
Date: Sun, 31 Jan 2021 08:58:24 +0100
Subject: [PATCH] webhook: final index.php

---
 examples/webhook/README.md | 21 +++++++++++-
 examples/webhook/index.php | 67 ++++++++++++++++++++++++++++++--------
 2 files changed, 74 insertions(+), 14 deletions(-)

diff --git a/examples/webhook/README.md b/examples/webhook/README.md
index 19a864e..cc558de 100644
--- a/examples/webhook/README.md
+++ b/examples/webhook/README.md
@@ -38,6 +38,25 @@ If you have an Apache webserver with a valid SLL certificate chain and php runni
 - setup webhook for your server (_e.g. `bin/any_command.sh set_webhook "https://myserver.com/telegram`_)
 - send a command to your bot (_e.g. `/start`_) to check correct setup 
 
-#### $$VERSION$$ v1.40-dev-11-g9316caa
+*Example index.php*, see [index.php](index.php) for a more complete implementation.
+
+```php
+<?php
+// bashbot home
+$BASHBOT_HOME='/usr/local/telegram-bot-bash';
+$cmd=$BASHBOT_HOME.'/bin/process_update.sh';
+
+// save server context and webhook JSON
+$json = file_get_contents("php://input");
+
+// process teegram update
+chdir($BASHBOT_HOME);
+$handle = popen( $cmd, 'w' );
+fwrite( $handle, $json.'\n' );
+pclose($handle);
+?>
+```
+
+#### $$VERSION$$ v1.40-dev-12-ga289cb8
 
 
diff --git a/examples/webhook/index.php b/examples/webhook/index.php
index 78377b6..f07c97b 100644
--- a/examples/webhook/index.php
+++ b/examples/webhook/index.php
@@ -1,19 +1,60 @@
 <?php
-// where bashbot is installed
-$BASHBOT_HOME='/usr/local/telegram-bot-bash';
-$cmd=$BASHBOT_HOME.'/bin/process_update.sh';
+/************************************************************
+ * @file        examples/webhook/index.php
+ * @description example webhook implementation for apache
+ *
+ * @author     KayM (gnadelwartz), kay@rrr.de
+ * @license    http://www.wtfpl.net/txt/copying/ WTFPLv2
+ * @since      30.01.2021 20:24
+ *
+#### $$VERSION$$ v1.40-dev-12-ga289cb8
+ ***********************************************************/
 
-// save server context and webhook JSON
-file_put_contents('server.txt', print_r($_SERVER, TRUE));
-if($json = file_get_contents("php://input")) {
-     $data = $json;
+ // bashbot home dir
+ $BASHBOT_HOME='/usr/local/telegram-bot-bash';
+ // webhook endpoint
+ $cmd=$BASHBOT_HOME.'/bin/process_update.sh';
+
+ // read request data
+ $data='';
+ $input="php://input";
+ if (php_sapi_name() == "cli") { $input="php://stdin"; }
+ if($json = file_get_contents($input)) { 
+	$data = $json;
  } else {
-     $data = $_POST;
+	$data = implode(" ",$_POST);
  }
-file_put_contents('json.txt', $data);
+ // file_put_contents('server.txt', print_r($_SERVER, TRUE));
+ // file_put_contents('json.txt', $data);
 
-// process teegram update
-chdir($BASHBOT_HOME);
-$handle = popen( $cmd.' debug', 'w' );
-fwrite( $handle, $data.'\n' );
+ // process telegram update
+ if ($data == '') {
+	error_response(400, "No data received");
+ }
+ if (! chdir($BASHBOT_HOME)) {
+	error_response(403, "No route to bot home");
+ }
+ if (! is_executable($cmd)) {
+	error_response(502, "Webhook endpoint not found");
+ }
+
+ if (! $handle = popen( $cmd.' debug', 'w' )) {
+	error_response(503, "Can't open webhook endpoint");
+ }
+ if (fwrite( $handle, $data.'\n') === false) {
+	error_response(504, "Write to webhook failed");
+ }
+ pclose($handle);
+
+
+ function error_response($code, $msg) {
+    $api = substr(php_sapi_name(), 0, 3);
+    if ($api == 'cgi' || $api == 'fpm') {
+ 	header('Status: '.$code.' '.$msg);
+    } else {
+	$protocol = isset($_SERVER['SERVER_PROTOCOL']) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0';
+	header($protocol.' '.$code.' '.$msg);
+    }
+    exit('Error '.$code.': '.$msg."\n");
+ }
 ?>