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-rw-r--r--Zotlabs/Web/HTTPSig.php129
1 files changed, 97 insertions, 32 deletions
diff --git a/Zotlabs/Web/HTTPSig.php b/Zotlabs/Web/HTTPSig.php
index a27edb73d..df66ecf5c 100644
--- a/Zotlabs/Web/HTTPSig.php
+++ b/Zotlabs/Web/HTTPSig.php
@@ -3,16 +3,24 @@
namespace Zotlabs\Web;
/**
- * Implements HTTP Signatures per draft-cavage-http-signatures-07
+ * @brief Implements HTTP Signatures per draft-cavage-http-signatures-07.
+ *
+ * @see https://tools.ietf.org/html/draft-cavage-http-signatures-07
*/
-
-
class HTTPSig {
- // See RFC5843
-
- static function generate_digest($body,$set = true) {
- $digest = base64_encode(hash('sha256',$body,true));
+ /**
+ * @brief RFC5843
+ *
+ * @see https://tools.ietf.org/html/rfc5843
+ *
+ * @param string $body The value to create the digest for
+ * @param boolean $set (optional, default true)
+ * If set send a Digest HTTP header
+ * @return string The generated digest of $body
+ */
+ static function generate_digest($body, $set = true) {
+ $digest = base64_encode(hash('sha256', $body, true));
if($set) {
header('Digest: SHA-256=' . $digest);
@@ -40,6 +48,7 @@ class HTTPSig {
if(is_array($data) && $data['header']) {
if(! $data['success'])
return $result;
+
$h = new \Zotlabs\Web\HTTPHeaders($data['header']);
$headers = $h->fetcharr();
$body = $data['body'];
@@ -47,9 +56,11 @@ class HTTPSig {
else {
$headers = [];
- $headers['(request-target)'] =
+ $headers['(request-target)'] =
strtolower($_SERVER['REQUEST_METHOD']) . ' ' .
$_SERVER['REQUEST_URI'];
+ $headers['content-type'] = $_SERVER['CONTENT_TYPE'];
+
foreach($_SERVER as $k => $v) {
if(strpos($k,'HTTP_') === 0) {
$field = str_replace('_','-',strtolower(substr($k,5)));
@@ -58,6 +69,10 @@ class HTTPSig {
}
}
+ // logger('SERVER: ' . print_r($_SERVER,true), LOGGER_ALL);
+
+ // logger('headers: ' . print_r($headers,true), LOGGER_ALL);
+
$sig_block = null;
if(array_key_exists('signature',$headers)) {
@@ -78,7 +93,7 @@ class HTTPSig {
$result['header_signed'] = true;
$signed_headers = $sig_block['headers'];
- if(! $signed_headers)
+ if(! $signed_headers)
$signed_headers = [ 'date' ];
$signed_data = '';
@@ -131,7 +146,7 @@ class HTTPSig {
if($digest[0] === 'SHA-512')
$hashalg = 'sha512';
- // The explode operation will have stripped the '=' padding, so compare against unpadded base64
+ // The explode operation will have stripped the '=' padding, so compare against unpadded base64
if(rtrim(base64_encode(hash($hashalg,$body,true)),'=') === $digest[1]) {
$result['content_valid'] = true;
}
@@ -146,7 +161,7 @@ class HTTPSig {
if($digest[0] === 'SHA-512')
$hashalg = 'sha512';
- // The explode operation will have stripped the '=' padding, so compare against unpadded base64
+ // The explode operation will have stripped the '=' padding, so compare against unpadded base64
if(rtrim(base64_encode(hash($hashalg,$_POST['data'],true)),'=') === $digest[1]) {
$result['content_valid'] = true;
}
@@ -155,9 +170,15 @@ class HTTPSig {
logger('Content_Valid: ' . (($result['content_valid']) ? 'true' : 'false'));
return $result;
-
}
+ /**
+ * @brief
+ *
+ * @param string $id
+ * @return boolean|string
+ * false if no pub key found, otherwise return the pub key
+ */
function get_activitypub_key($id) {
if(strpos($id,'acct:') === 0) {
@@ -174,25 +195,41 @@ class HTTPSig {
if($x && $x[0]['xchan_pubkey']) {
return ($x[0]['xchan_pubkey']);
}
- $r = as_fetch($id);
+
+ if(function_exists('as_fetch'))
+ $r = as_fetch($id);
if($r) {
$j = json_decode($r,true);
- if($j['id'] !== $id)
- return false;
if(array_key_exists('publicKey',$j) && array_key_exists('publicKeyPem',$j['publicKey'])) {
+ if((array_key_exists('id',$j['publicKey']) && $j['publicKey']['id'] !== $id) && $j['id'] !== $id)
+ return false;
+
return($j['publicKey']['publicKeyPem']);
}
}
+
return false;
}
-
-
-
- static function create_sig($request,$head,$prvkey,$keyid = 'Key',$send_headers = false,$auth = false,$alg = 'sha256',
- $crypt_key = null, $crypt_algo = 'aes256ctr') {
+ /**
+ * @brief
+ *
+ * @param string $request
+ * @param array $head
+ * @param string $prvkey
+ * @param string $keyid (optional, default 'Key')
+ * @param boolean $send_headers (optional, default false)
+ * If set send a HTTP header
+ * @param boolean $auth (optional, default false)
+ * @param string $alg (optional, default 'sha256')
+ * @param string $crypt_key (optional, default null)
+ * @param string $crypt_algo (optional, default 'aes256ctr')
+ * @return array
+ */
+ static function create_sig($request, $head, $prvkey, $keyid = 'Key', $send_headers = false, $auth = false,
+ $alg = 'sha256', $crypt_key = null, $crypt_algo = 'aes256ctr') {
$return_headers = [];
@@ -212,7 +249,7 @@ class HTTPSig {
$x = crypto_encapsulate($headerval,$crypt_key,$crypt_algo);
$headerval = 'iv="' . $x['iv'] . '",key="' . $x['key'] . '",alg="' . $x['alg'] . '",data="' . $x['data'] . '"';
}
-
+
if($auth) {
$sighead = 'Authorization: Signature ' . $headerval;
}
@@ -236,12 +273,20 @@ class HTTPSig {
else {
$return_headers[] = $sighead;
}
+
return $return_headers;
}
-
-
- static function sign($request,$head,$prvkey,$alg = 'sha256') {
+ /**
+ * @brief
+ *
+ * @param string $request
+ * @param array $head
+ * @param string $prvkey
+ * @param string $alg (optional) default 'sha256'
+ * @return array
+ */
+ static function sign($request, $head, $prvkey, $alg = 'sha256') {
$ret = [];
@@ -250,27 +295,38 @@ class HTTPSig {
if($request) {
$headers = '(request-target)' . ': ' . trim($request) . "\n";
$fields = '(request-target)';
- }
+ }
if($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));
+ $sig = base64_encode(rsa_sign($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) {
$ret = [];
@@ -297,12 +353,23 @@ class HTTPSig {
}
- static function decrypt_sigheader($header,$prvkey = null) {
+ /**
+ * @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');
+ $prvkey = get_config('system', 'prvkey');
}
$matches = [];
@@ -319,10 +386,8 @@ class HTTPSig {
if($iv && $key && $alg && $data) {
return crypto_unencapsulate([ 'iv' => $iv, 'key' => $key, 'alg' => $alg, 'data' => $data ] , $prvkey);
}
- return '';
+ return '';
}
}
-
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 17:15:17 +0000