From 85b324b00f63a2a92b67e536e656703a29663461 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?s=C3=B8renpeter?= <sp@darch.dk>
Date: Tue, 12 Dec 2023 16:41:13 +0100
Subject: [PATCH] twtmention experiments

---
 index.php                     |  1 +
 views/twtmention_endpoint.php | 67 +++++++++++++++++++++++++++++++++++
 views/webmention_endpoint.php | 22 ++++++------
 3 files changed, 79 insertions(+), 11 deletions(-)
 create mode 100644 views/twtmention_endpoint.php

diff --git a/index.php b/index.php
index bddbf4d..5b6d865 100644
--- a/index.php
+++ b/index.php
@@ -38,6 +38,7 @@ $routes = [
     //'/profile/([a-zA-Z0-9_-]+)' => 'profile.php',
     '/conv/([a-zA-Z0-9]{7})' => 'conv.php', // matches only twtHash of exactly 7 alphanumeric characters 
     '/post/([a-zA-Z0-9]{7})' => 'post.php', // matches only twtHash of exactly 7 alphanumeric characters 
+    '/twtmention' => 'twtmention_endpoint.php',
     '/webmention' => 'webmention_endpoint.php',
 ];
 
diff --git a/views/twtmention_endpoint.php b/views/twtmention_endpoint.php
new file mode 100644
index 0000000..5a6925b
--- /dev/null
+++ b/views/twtmention_endpoint.php
@@ -0,0 +1,67 @@
+<?php
+# Source: https://gist.github.com/adactio/6484118
+# Licensed under a CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
+# http://creativecommons.org/publicdomain/zero/1.0/
+
+if (!isset($_POST['source']) || !isset($_POST['target'])) {
+  print('Please send a propper webmention to this endpoint');
+  header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
+  exit;
+}
+
+ob_start();
+$ch = curl_init($_POST['source']);
+curl_setopt($ch,CURLOPT_USERAGENT,'Timeline Twtxt Web-client (webmention.org)');
+curl_setopt($ch,CURLOPT_HEADER,0);
+$ok = curl_exec($ch);
+curl_close($ch);
+$source = ob_get_contents();
+ob_end_clean();
+
+function twtFromDate($url) {
+	// Split URL into fragment and file path, and retrurns twt maching date
+	$datetime = parse_url($url, PHP_URL_FRAGMENT);
+	$twtfile = strtok($url, "#");
+	return preg_grep($datetime, explode(PHP_EOL,$source));	
+}
+
+function twtMentionInSource($twt){
+	// Tests if twt contains a mentions to target
+	$pattern = '/@<([^>]+)\s([^>]+)>/'; // Matches "@<nick url>"
+	// Match only mention of specific URL from TARGET
+	return preg_match($pattern, $twt);
+}
+
+if (stristr($_POST['source'], ".txt#")) {
+	header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
+	
+	// Split URL into fragment and file path, and retrurns twt maching date
+	$datetime = "/".parse_url($_POST['source'], PHP_URL_FRAGMENT)."/";
+	//$twtfile = strtok($_POST['source'], "#");
+	$txt = explode(PHP_EOL, $source);
+	$twt = preg_grep($datetime, $txt);	
+
+
+	/*
+	if (twtMentionInSource($twt) {
+		$twtMention = "YES!";
+	}
+	*/
+
+	$logfile = './mentions.txt'; // Make sure file is writeable
+
+	$log  = date("Y-m-d\TH:i:s\Z") . "\t" 
+	    ."Recived webmention from ".$_POST['source']
+	    ." mentioning ".$_POST['target']
+	    ." -- ".$twt.$datetime
+	   	//." (IP: ".$_SERVER['REMOTE_ADDR'].")"
+	   	.PHP_EOL;
+	 	file_put_contents($logfile, $log, FILE_APPEND);
+
+}
+else {
+	header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
+	exit;	
+}
+
+?>
diff --git a/views/webmention_endpoint.php b/views/webmention_endpoint.php
index 82dcea6..1b82549 100644
--- a/views/webmention_endpoint.php
+++ b/views/webmention_endpoint.php
@@ -40,23 +40,23 @@ if (str_contains($url, ".txt#")) {
 
 
 if (stristr($source, $_POST['target'])) {
-header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
+	header($_SERVER['SERVER_PROTOCOL'] . ' 202 Accepted');
 
-# Now do something with $source e.g. parse it for h-entry and h-card and store what you find.
+	# Now do something with $source e.g. parse it for h-entry and h-card and store what you find.
 
-$logfile = './mentions.txt'; /* Make sure file is writeable */
+	$logfile = './mentions.txt'; /* Make sure file is writeable */
 
-$log  = date("Y-m-d\TH:i:s\Z") . "\t" 
-    ."Recived webmention from ".$_POST['source']
-    ." mentioning ".$_POST['target']
-   	//." (IP: ".$_SERVER['REMOTE_ADDR'].")"
-   	.PHP_EOL;
- 	file_put_contents($logfile, $log, FILE_APPEND);
+	$log  = date("Y-m-d\TH:i:s\Z") . "\t" 
+	    ."Recived webmention from ".$_POST['source']
+	    ." mentioning ".$_POST['target']
+	   	//." (IP: ".$_SERVER['REMOTE_ADDR'].")"
+	   	.PHP_EOL;
+	 	file_put_contents($logfile, $log, FILE_APPEND);
 
 }
 else {
-  header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
-  exit;	
+	header($_SERVER['SERVER_PROTOCOL'] . ' 400 Bad Request');
+	exit;	
 }
 
 ?>