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77 lines
2.3 KiB
PHP
77 lines
2.3 KiB
PHP
<?php
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namespace Zotlabs\Module;
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use Zotlabs\Web\HTTPSig;
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use Zotlabs\Lib\Verify;
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/**
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* OpenWebAuth verifier and token generator
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* See https://macgirvin.com/wiki/mike/OpenWebAuth/Home
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* Requests to this endpoint should be signed using HTTP Signatures
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* using the 'Authorization: Signature' authentication method
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* If the signature verifies a token is returned.
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*
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* This token may be exchanged for an authenticated cookie.
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*/
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class Owa extends \Zotlabs\Web\Controller {
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function init() {
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$ret = [ 'success' => false ];
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foreach([ 'REDIRECT_REMOTE_USER', 'HTTP_AUTHORIZATION' ] as $head) {
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if(array_key_exists($head,$_SERVER) && substr(trim($_SERVER[$head]),0,9) === 'Signature') {
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if($head !== 'HTTP_AUTHORIZATION') {
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$_SERVER['HTTP_AUTHORIZATION'] = $_SERVER[$head];
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continue;
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}
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$sigblock = HTTPSig::parse_sigheader($_SERVER[$head]);
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if($sigblock) {
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$keyId = $sigblock['keyId'];
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if($keyId) {
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$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash
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where ( hubloc_addr = '%s' or hubloc_url = '%s' ) ",
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dbesc(str_replace('acct:','',$keyId)),
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dbesc($keyId)
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);
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if(! $r) {
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$found = discover_by_webbie(str_replace('acct:','',$keyId));
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if($found) {
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$r = q("select * from hubloc left join xchan on hubloc_hash = xchan_hash
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where ( hubloc_addr = '%s' or hubloc_url = '%s' ) ",
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dbesc(str_replace('acct:','',$keyId)),
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dbesc($keyId)
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);
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}
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}
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if($r) {
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foreach($r as $hubloc) {
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$verified = HTTPSig::verify('',$hubloc['xchan_pubkey']);
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if($verified && $verified['header_signed'] && $verified['header_valid']) {
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logger('OWA header: ' . print_r($verified,true),LOGGER_DATA);
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logger('OWA success: ' . $hubloc['hubloc_addr'],LOGGER_DATA);
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$ret['success'] = true;
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$token = random_string(32);
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Verify::create('owt',0,$token,$hubloc['hubloc_addr']);
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$result = '';
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openssl_public_encrypt($token,$result,$hubloc['xchan_pubkey']);
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$ret['encrypted_token'] = base64url_encode($result);
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break;
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}
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else {
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logger('OWA fail: ' . $hubloc['hubloc_id'] . ' ' . $hubloc['hubloc_addr']);
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}
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}
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}
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}
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}
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}
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}
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json_return_and_die($ret,'application/x-zot+json');
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}
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}
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