From fea532af4da522001c71eb79df5fc49c83833da9 Mon Sep 17 00:00:00 2001
From: redmatrix <git@macgirvin.com>
Date: Sun, 20 Mar 2016 19:55:53 -0700
Subject: rework salmon - important, update addons also if you have enabled
 gnusoc addon

---
 include/salmon.php | 196 -----------------------------------------------------
 1 file changed, 196 deletions(-)
 delete mode 100644 include/salmon.php

(limited to 'include/salmon.php')

diff --git a/include/salmon.php b/include/salmon.php
deleted file mode 100644
index 737d1f0d0..000000000
--- a/include/salmon.php
+++ /dev/null
@@ -1,196 +0,0 @@
-<?php
-
-require_once('include/crypto.php');
-
-function get_salmon_key($uri,$keyhash) {
-	$ret = array();
-
-	logger('Fetching salmon key for ' . $uri, LOGGER_DEBUG, LOG_INFO);
-
-	$x = webfinger_rfc7033($uri,true);
-
-	logger('webfinger returns: ' . print_r($x,true), LOGGER_DATA, LOG_DEBUG);
-
-	if($x && array_key_exists('links',$x) && $x['links']) {
-		foreach($x['links'] as $link) {
-			if(array_key_exists('rel',$link) && $link['rel'] === 'magic-public-key') {
-				$ret[] = $link['href'];
-			}
-		}
-	}
-
-	else {
-		$arr = old_webfinger($uri);
-
-		logger('old webfinger returns: ' . print_r($arr,true), LOGGER_DATA, LOG_DEBUG);
-
-		if(is_array($arr)) {
-			foreach($arr as $a) {
-				if($a['@attributes']['rel'] === 'magic-public-key') {
-					$ret[] = $a['@attributes']['href'];
-				}
-			}
-		}
-		else {
-			return '';
-		}
-	}
-
-	// We have found at least one key URL
-	// If it's inline, parse it - otherwise get the key
-
-	if(count($ret)) {
-		for($x = 0; $x < count($ret); $x ++) {
-			if(substr($ret[$x],0,5) === 'data:') {
-				$ret[$x] = convert_salmon_key($ret[$x]);
-			}
-		}
-	}
-
-
-	logger('Key located: ' . print_r($ret,true), LOGGER_DEBUG, LOG_INFO);
-
-	if(count($ret) == 1) {
-
-		// We only found one one key so we don't care if the hash matches.
-		// If it's the wrong key we'll find out soon enough because
-		// message verification will fail. This also covers some older
-		// software which don't supply a keyhash. As long as they only
-		// have one key we'll be right.
-
-		return $ret[0];
-	}
-	else {
-		foreach($ret as $a) {
-			$hash = base64url_encode(hash('sha256',$a));
-			if($hash == $keyhash)
-				return $a;
-		}
-	}
-
-	return '';
-}
-
-
-
-function slapper($owner,$url,$slap) {
-
-	// does contact have a salmon endpoint?
-
-	if(! strlen($url))
-		return;
-
-
-	if(! $owner['channel_prvkey']) {
-		logger(sprintf("channel '%s' (%d) does not have a salmon private key. Send failed.",
-		$owner['channel_address'],$owner['channel_id']));
-		return;
-	}
-
-	logger('slapper called for ' .$url . '. Data: ' . $slap, LOGGER_DATA, LOG_DEBUG);
-
-	// create a magic envelope
-
-	$data      = base64url_encode($slap);
-	$data_type = 'application/atom+xml';
-	$encoding  = 'base64url';
-	$algorithm = 'RSA-SHA256';
-	$keyhash   = base64url_encode(hash('sha256',salmon_key($owner['channel_pubkey'])),true);
-
-	// precomputed base64url encoding of data_type, encoding, algorithm concatenated with periods
-
-	$precomputed = '.YXBwbGljYXRpb24vYXRvbSt4bWw=.YmFzZTY0dXJs.UlNBLVNIQTI1Ng==';
-
-	$signature   = base64url_encode(rsa_sign(str_replace('=','',$data . $precomputed),$owner['channel_prvkey']));
-
-	$signature2  = base64url_encode(rsa_sign($data . $precomputed,$owner['channel_prvkey']));
-
-	$signature3  = base64url_encode(rsa_sign($data,$owner['channel_prvkey']));
-
-	$salmon_tpl = get_markup_template('magicsig.tpl');
-
-	$salmon = replace_macros($salmon_tpl,array(
-		'$data'      => $data,
-		'$encoding'  => $encoding,
-		'$algorithm' => $algorithm,
-		'$keyhash'   => $keyhash,
-		'$signature' => $signature
-	));
-
-	// slap them
-
-	$redirects = 0;
-
-	$ret = z_post_url($url,$salmon, $redirects, array('headers' => array(
-		'Content-type: application/magic-envelope+xml',
-		'Content-length: ' . strlen($salmon))
-	));
-
-
-	$return_code = $ret['return_code'];
-
-	// check for success, e.g. 2xx
-
-	if($return_code > 299) {
-
-		logger('compliant salmon failed. Falling back to status.net hack2');
-
-		// Entirely likely that their salmon implementation is
-		// non-compliant. Let's try once more, this time only signing
-		// the data, without stripping '=' chars
-
-		$salmon = replace_macros($salmon_tpl,array(
-			'$data'      => $data,
-			'$encoding'  => $encoding,
-			'$algorithm' => $algorithm,
-			'$keyhash'   => $keyhash,
-			'$signature' => $signature2
-		));
-
-		$redirects = 0;
-
-		$ret = z_post_url($url,$salmon, $redirects, array('headers' => array(
-			'Content-type: application/magic-envelope+xml',
-			'Content-length: ' . strlen($salmon))
-		));
-
-
-		$return_code = $ret['return_code'];
-
-		if($return_code > 299) {
-
-			logger('compliant salmon failed. Falling back to status.net hack3');
-
-			// Entirely likely that their salmon implementation is
-			// non-compliant. Let's try once more, this time only signing
-			// the data, without the precomputed blob
-
-			$salmon = replace_macros($salmon_tpl,array(
-				'$data'      => $data,
-				'$encoding'  => $encoding,
-				'$algorithm' => $algorithm,
-				'$keyhash'   => $keyhash,
-				'$signature' => $signature3
-			));
-
-			$redirects = 0;
-	
-			$ret = z_post_url($url,$salmon, $redirects, array('headers' => array(
-				'Content-type: application/magic-envelope+xml',
-				'Content-length: ' . strlen($salmon))
-			));
-
-
-			$return_code = $ret['return_code'];
-		}
-	}
-	logger('slapper for ' . $url . ' returned ' . $return_code);
-
-	if(! $return_code)
-		return(-1);
-	if(($return_code == 503) && (stristr($ret['header'],'retry-after')))
-		return(-1);
-
-	return ((($return_code >= 200) && ($return_code < 300)) ? 0 : 1);
-}
-
-- 
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