support zot and zot6 in social graph operations (suggestions, common friends)

1 files changed, 0 insertions, 536 deletions

diff --git a/Zotlabs/Zot6/HTTPSig.php b/Zotlabs/Zot6/HTTPSig.php
deleted file mode 100644
index d3a09b858..000000000
--- a/Zotlabs/Zot6/HTTPSig.php
+++ /dev/null
@@ -1,536 +0,0 @@
-<?php
-
-namespace Zotlabs\Zot6;
-
-use Zotlabs\Lib\ActivityStreams;
-use Zotlabs\Lib\Webfinger;
-use Zotlabs\Web\HTTPHeaders;
-use Zotlabs\Lib\Libzot;
-
-/**
- * @brief Implements HTTP Signatures per draft-cavage-http-signatures-10.
- *
- * @see https://tools.ietf.org/html/draft-cavage-http-signatures-10
- */
-
-class HTTPSig {
-
-	/**
-	 * @brief RFC5843
-	 *
-	 * @see https://tools.ietf.org/html/rfc5843
-	 *
-	 * @param string $body The value to create the digest for
-	 * @param string $alg hash algorithm (one of 'sha256','sha512')
-	 * @return string The generated digest header string for $body
-	 */
-
-	static function generate_digest_header($body,$alg = 'sha256') {
-
-		$digest = base64_encode(hash($alg, $body, true));
-		switch($alg) {
-			case 'sha512':
-				return 'SHA-512=' . $digest;
-			case 'sha256':
-			default:
-				return 'SHA-256=' . $digest;
-				break;
-		}
-	}
-
-	static function find_headers($data,&$body) {
-
-		// decide if $data arrived via controller submission or curl
-
-		if(is_array($data) && $data['header']) {
-			if(! $data['success'])
-				return [];
-
-			$h = new HTTPHeaders($data['header']);
-			$headers = $h->fetcharr();
-			$body = $data['body'];
-			$headers['(request-target)'] = $data['request_target'];
-		}
-
-		else {
-			$headers = [];
-			$headers['(request-target)'] = strtolower($_SERVER['REQUEST_METHOD']) . ' ' . $_SERVER['REQUEST_URI'];
-			$headers['content-type'] = $_SERVER['CONTENT_TYPE'];
-			$headers['content-length'] = $_SERVER['CONTENT_LENGTH'];
-
-			foreach($_SERVER as $k => $v) {
-				if(strpos($k,'HTTP_') === 0) {
-					$field = str_replace('_','-',strtolower(substr($k,5)));
-					$headers[$field] = $v;
-				}
-			}
-		}
-
-		//logger('SERVER: ' . print_r($_SERVER,true), LOGGER_ALL);
-
-		//logger('headers: ' . print_r($headers,true), LOGGER_ALL);
-
-		return $headers;
-	}
-
-
-	// See draft-cavage-http-signatures-10
-
-	static function verify($data,$key = '') {
-
-		$body      = $data;
-		$headers   = null;
-
-		$result = [
-			'signer'         => '',
-			'portable_id'    => '',
-			'header_signed'  => false,
-			'header_valid'   => false,
-			'content_signed' => false,
-			'content_valid'  => false
-		];
-
-
-		$headers = self::find_headers($data,$body);
-
-		if(! $headers)
-			return $result;
-
-		$sig_block = null;
-
-		if(array_key_exists('signature',$headers)) {
-			$sig_block = self::parse_sigheader($headers['signature']);
-		}
-		elseif(array_key_exists('authorization',$headers)) {
-			$sig_block = self::parse_sigheader($headers['authorization']);
-		}
-
-		if(! $sig_block) {
-			logger('no signature provided.', LOGGER_DEBUG);
-			return $result;
-		}
-
-		// Warning: This log statement includes binary data
-		// logger('sig_block: ' . print_r($sig_block,true), LOGGER_DATA);
-
-		$result['header_signed'] = true;
-
-		$signed_headers = $sig_block['headers'];
-		if(! $signed_headers)
-			$signed_headers = [ 'date' ];
-
-		$signed_data = '';
-		foreach($signed_headers as $h) {
-			if(array_key_exists($h,$headers)) {
-				$signed_data .= $h . ': ' . $headers[$h] . "\n";
-			}
-			if($h === 'date') {
-				$d = new \DateTime($headers[$h]);
-				$d->setTimeZone(new \DateTimeZone('UTC'));
-				$dplus = datetime_convert('UTC','UTC','now + 1 day');
-				$dminus = datetime_convert('UTC','UTC','now - 1 day');
-				$c = $d->format('Y-m-d H:i:s');
-				if($c > $dplus || $c < $dminus) {
-					logger('bad time: ' . $c);
-					return $result;
-				}
-			}
-		}
-		$signed_data = rtrim($signed_data,"\n");
-
-		$algorithm = null;
-		if($sig_block['algorithm'] === 'rsa-sha256') {
-			$algorithm = 'sha256';
-		}
-		if($sig_block['algorithm'] === 'rsa-sha512') {
-			$algorithm = 'sha512';
-		}
-
-		if(! array_key_exists('keyId',$sig_block))
-			return $result;
-
-		$result['signer'] = $sig_block['keyId'];
-
-		$key = self::get_key($key,$result['signer']);
-
-		if(! ($key && $key['public_key'])) {
-			return $result;
-		}
-
-		$x = rsa_verify($signed_data,$sig_block['signature'],$key['public_key'],$algorithm);
-
-		logger('verified: ' . $x, LOGGER_DEBUG);
-
-		if(! $x) {
-			logger('verify failed for ' . $result['signer'] . ' alg=' . $algorithm . (($key['public_key']) ? '' : ' no key'));
-			$sig_block['signature'] = base64_encode($sig_block['signature']);
-			logger('affected sigblock: ' . print_r($sig_block,true));
-			logger('signed_data: ' . print_r($signed_data,true));
-			logger('headers: ' . print_r($headers,true));
-			logger('server: ' . print_r($_SERVER,true));
-			return $result;
-		}
-
-		$result['portable_id'] = $key['portable_id'];
-		$result['header_valid'] = true;
-
-		if(in_array('digest',$signed_headers)) {
-			$result['content_signed'] = true;
-			$digest = explode('=', $headers['digest'], 2);
-			if($digest[0] === 'SHA-256')
-				$hashalg = 'sha256';
-			if($digest[0] === 'SHA-512')
-				$hashalg = 'sha512';
-
-			if(base64_encode(hash($hashalg,$body,true)) === $digest[1]) {
-				$result['content_valid'] = true;
-			}
-
-			logger('Content_Valid: ' . (($result['content_valid']) ? 'true' : 'false'));
-		}
-
-		return $result;
-	}
-
-	static function get_key($key,$id) {
-
-		if($key) {
-			if(function_exists($key)) {
-				return $key($id);
-			}
-			return [ 'public_key' => $key ];
-		}
-
-		if(strpos($id,'#') === false) {
-			$key = self::get_webfinger_key($id);
-		}
-
-		if(! $key) {
-			$key = self::get_activitystreams_key($id);
-		}
-
-		return $key;
-
-	}
-
-
-	function convertKey($key) {
-
-		if(strstr($key,'RSA ')) { 
-			return rsatopem($key);
-		}
-		elseif(substr($key,0,5) === 'data:') {
-			return convert_salmon_key($key);
-		}
-		else {
-			return $key;
-		}
-
-	}
-
-
-	/**
-	 * @brief
-	 *
-	 * @param string $id
-	 * @return boolean|string
-	 *   false if no pub key found, otherwise return the pub key
-	 */
-
-	function get_activitystreams_key($id) {
-
-		// remove fragment
-
-		$url = ((strpos($id,'#')) ? substr($id,0,strpos($id,'#')) : $id);
-
-		$x = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_addr = '%s' or hubloc_id_url = '%s' limit 1",
-			dbesc(str_replace('acct:','',$url)),
-			dbesc($url)
-		);
-
-		if($x && $x[0]['xchan_pubkey']) {
-			return [ 'portable_id' => $x[0]['xchan_hash'], 'public_key' => $x[0]['xchan_pubkey'] , 'hubloc' => $x[0] ];
-		}
-
-		$r = ActivityStreams::fetch($id);
-
-		if($r) {
-			if(array_key_exists('publicKey',$r) && array_key_exists('publicKeyPem',$r['publicKey']) && array_key_exists('id',$r['publicKey'])) {
-				if($r['publicKey']['id'] === $id || $r['id'] === $id) {
-					$portable_id = ((array_key_exists('owner',$r['publicKey'])) ? $r['publicKey']['owner'] : EMPTY_STR);
-					return [ 'public_key' => self::convertKey($r['publicKey']['publicKeyPem']), 'portable_id' => $portable_id, 'hubloc' => [] ];
-				}
-			}
-		}
-		return false;
-	}
-
-
-	function get_webfinger_key($id) {
-
-		$x = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_addr = '%s' or hubloc_id_url = '%s' limit 1",
-			dbesc(str_replace('acct:','',$id)),
-			dbesc($id)
-		);
-
-		if($x && $x[0]['xchan_pubkey']) {
-			return [ 'portable_id' => $x[0]['xchan_hash'], 'public_key' => $x[0]['xchan_pubkey'] , 'hubloc' => $x[0] ];
-		}
-
-		$wf = Webfinger::exec($id);
-		$key = [ 'portable_id' => '', 'public_key' => '', 'hubloc' => [] ];
-
-		if($wf) {
-		 	if(array_key_exists('properties',$wf) && array_key_exists('https://w3id.org/security/v1#publicKeyPem',$wf['properties'])) {
-				$key['public_key'] = self::convertKey($wf['properties']['https://w3id.org/security/v1#publicKeyPem']);
-			}
-			if(array_key_exists('links', $wf) && is_array($wf['links'])) {
-				foreach($wf['links'] as $l) {
-					if(! (is_array($l) && array_key_exists('rel',$l))) {
-						continue;
-					}
-					if($l['rel'] === 'magic-public-key' && array_key_exists('href',$l) && $key['public_key'] === EMPTY_STR) {
-						$key['public_key'] = self::convertKey($l['href']);
-					}
-				}
-			}
-		}
-
-		return (($key['public_key']) ? $key : false);
-	}
-
-
-	function get_zotfinger_key($id) {
-
-		$x = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_addr = '%s' or hubloc_id_url = '%s' limit 1",
-			dbesc(str_replace('acct:','',$id)),
-			dbesc($id)
-		);
-		if($x && $x[0]['xchan_pubkey']) {
-			return [ 'portable_id' => $x[0]['xchan_hash'], 'public_key' => $x[0]['xchan_pubkey'] , 'hubloc' => $x[0] ];
-		}
-
-		$wf = Webfinger::exec($id);
-		$key = [ 'portable_id' => '', 'public_key' => '', 'hubloc' => [] ];
-
-		if($wf) {
-		 	if(array_key_exists('properties',$wf) && array_key_exists('https://w3id.org/security/v1#publicKeyPem',$wf['properties'])) {
-				$key['public_key'] = self::convertKey($wf['properties']['https://w3id.org/security/v1#publicKeyPem']);
-			}
-			if(array_key_exists('links', $wf) && is_array($wf['links'])) {
-				foreach($wf['links'] as $l) {
-					if(! (is_array($l) && array_key_exists('rel',$l))) {
-						continue;
-					}
-					if($l['rel'] === 'http://purl.org/zot/protocol/6.0' && array_key_exists('href',$l) && $l['href'] !== EMPTY_STR) {
-						$z = \Zotlabs\Lib\Zotfinger::exec($l['href']);
-						if($z) {
-							$i = Libzot::import_xchan($z['data']);
-							if($i['success']) {
-								$key['portable_id'] = $i['hash'];
-
-								$x = q("select * from xchan left join hubloc on xchan_hash = hubloc_hash where hubloc_id_url = '%s' limit 1",
-									dbesc($l['href'])
-								);
-								if($x) {
-									$key['hubloc'] = $x[0];
-								}
-							}
-						}
-					}
-					if($l['rel'] === 'magic-public-key' && array_key_exists('href',$l) && $key['public_key'] === EMPTY_STR) {
-						$key['public_key'] = self::convertKey($l['href']);
-					}
-				}
-			}
-		}
-
-		return (($key['public_key']) ? $key : false);
-	}
-
-
-	/**
-	 * @brief
-	 *
-	 * @param array $head
-	 * @param string $prvkey
-	 * @param string $keyid (optional, default '')
-	 * @param boolean $auth (optional, default false)
-	 * @param string $alg (optional, default 'sha256')
-	 * @param array $encryption [ 'key', 'algorithm' ] or false
-	 * @return array
-	 */
-	static function create_sig($head, $prvkey, $keyid = EMPTY_STR, $auth = false, $alg = 'sha256', $encryption = false ) {
-
-		$return_headers = [];
-
-		if($alg === 'sha256') {
-			$algorithm = 'rsa-sha256';
-		}
-		if($alg === 'sha512') {
-			$algorithm = 'rsa-sha512';
-		}
-
-		$x = self::sign($head,$prvkey,$alg);
-
-		$headerval = 'keyId="' . $keyid . '",algorithm="' . $algorithm . '",headers="' . $x['headers'] . '",signature="' . $x['signature'] . '"';
-
-		if($encryption) {
-			$x = crypto_encapsulate($headerval,$encryption['key'],$encryption['algorithm']);
-			if(is_array($x)) {
-				$headerval = 'iv="' . $x['iv'] . '",key="' . $x['key'] . '",alg="' . $x['alg'] . '",data="' . $x['data'] . '"';
-			}
-		}
-
-		if($auth) {
-			$sighead = 'Authorization: Signature ' . $headerval;
-		}
-		else {
-			$sighead = 'Signature: ' . $headerval;
-		}
-
-		if($head) {
-			foreach($head as $k => $v) {
-				// strip the request-target virtual header from the output headers
-				if($k === '(request-target)') {
-					continue;
-				}
-				$return_headers[] = $k . ': ' . $v;
-			}
-		}
-		$return_headers[] = $sighead;
-
-		return $return_headers;
-	}
-
-	/**
-	 * @brief set headers
-	 *
-	 * @param array $headers
-	 * @return void
-	 */
-
-
-	static function set_headers($headers) {
-		if($headers && is_array($headers)) {
-			foreach($headers as $h) {
-				header($h);
-			}
-		} 
-	}
-
-
-	/**
-	 * @brief
-	 *
-	 * @param array  $head
-	 * @param string $prvkey
-	 * @param string $alg (optional) default 'sha256'
-	 * @return array
-	 */
-
-	static function sign($head, $prvkey, $alg = 'sha256') {
-
-		$ret = [];
-
-		$headers = '';
-		$fields  = '';
-
-		logger('signing: ' . print_r($head,true), LOGGER_DATA);
-
-		if($head) {
-			foreach($head as $k => $v) {
-				$headers .= strtolower($k) . ': ' . trim($v) . "\n";
-				if($fields)
-					$fields .= ' ';
-
-				$fields .= strtolower($k);
-			}
-			// strip the trailing linefeed
-			$headers = rtrim($headers,"\n");
-		}
-
-		$sig = base64_encode(rsa_sign($headers,$prvkey,$alg));
-
-		$ret['headers']   = $fields;
-		$ret['signature'] = $sig;
-
-		return $ret;
-	}
-
-	/**
-	 * @brief
-	 *
-	 * @param string $header
-	 * @return array associate array with
-	 *   - \e string \b keyID
-	 *   - \e string \b algorithm
-	 *   - \e array  \b headers
-	 *   - \e string \b signature
-	 */
-
-	static function parse_sigheader($header) {
-
-		$ret = [];
-		$matches = [];
-
-		// if the header is encrypted, decrypt with (default) site private key and continue
-
-		if(preg_match('/iv="(.*?)"/ism',$header,$matches))
-			$header = self::decrypt_sigheader($header);
-
-		if(preg_match('/keyId="(.*?)"/ism',$header,$matches))
-			$ret['keyId'] = $matches[1];
-		if(preg_match('/algorithm="(.*?)"/ism',$header,$matches))
-			$ret['algorithm'] = $matches[1];
-		if(preg_match('/headers="(.*?)"/ism',$header,$matches))
-			$ret['headers'] = explode(' ', $matches[1]);
-		if(preg_match('/signature="(.*?)"/ism',$header,$matches))
-			$ret['signature'] = base64_decode(preg_replace('/\s+/','',$matches[1]));
-
-		if(($ret['signature']) && ($ret['algorithm']) && (! $ret['headers']))
-			$ret['headers'] = [ 'date' ];
-
- 		return $ret;
-	}
-
-
-	/**
-	 * @brief
-	 *
-	 * @param string $header
-	 * @param string $prvkey (optional), if not set use site private key
-	 * @return array|string associative array, empty string if failue
-	 *   - \e string \b iv
-	 *   - \e string \b key
-	 *   - \e string \b alg
-	 *   - \e string \b data
-	 */
-
-	static function decrypt_sigheader($header, $prvkey = null) {
-
-		$iv = $key = $alg = $data = null;
-
-		if(! $prvkey) {
-			$prvkey = get_config('system', 'prvkey');
-		}
-
-		$matches = [];
-
-		if(preg_match('/iv="(.*?)"/ism',$header,$matches))
-			$iv = $matches[1];
-		if(preg_match('/key="(.*?)"/ism',$header,$matches))
-			$key = $matches[1];
-		if(preg_match('/alg="(.*?)"/ism',$header,$matches))
-			$alg = $matches[1];
-		if(preg_match('/data="(.*?)"/ism',$header,$matches))
-			$data = $matches[1];
-
-		if($iv && $key && $alg && $data) {
-			return crypto_unencapsulate([ 'encrypted' => true, 'iv' => $iv, 'key' => $key, 'alg' => $alg, 'data' => $data ] , $prvkey);
-		}
-
-		return '';
-	}
-
-}