mirror of
https://gitlab.com/davical-project/davical.git
synced 2026-05-26 02:44:29 +00:00
Merge branch 'sched' of boxacle.net:/var/www/cave-man.org/htdocs/projects/davical into sched
This commit is contained in:
Rob Ostensen
commit
e1e357d342
@ -1,4 +1,4 @@
|
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<?PHP
|
<?php
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||||||
/**
|
/**
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||||||
* Functions that are needed for iScheduling requests
|
* Functions that are needed for iScheduling requests
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||||||
*
|
*
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||||||
@ -24,322 +24,379 @@ require_once("XMLDocument.php");
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|||||||
*/
|
*/
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||||||
class iSchedule
|
class iSchedule
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||||||
{
|
{
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||||||
public $parsed;
|
public $parsed;
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||||||
public $selector;
|
public $selector;
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||||||
public $domain;
|
public $domain;
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||||||
private $dk;
|
private $dk;
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||||||
private $DKSig;
|
private $DKSig;
|
||||||
private $try_anyway = false;
|
private $try_anyway = false;
|
||||||
private $failed = false;
|
private $failed = false;
|
||||||
private $failOnError = true;
|
private $failOnError = true;
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||||||
private $subdomainsOK = true;
|
private $subdomainsOK = true;
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||||||
private $remote_public_key ;
|
private $remote_public_key ;
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||||||
|
|
||||||
function __construct ( )
|
function __construct ( )
|
||||||
{
|
{
|
||||||
$this->selector = 'cal';
|
$this->selector = 'cal';
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||||||
if ( is_object ( $c ) && isset ( $c->scheduling_dkim_selector ) )
|
if ( is_object ( $c ) && isset ( $c->scheduling_dkim_selector ) )
|
||||||
$this->scheduling_dkim_selector = $c->scheduling_dkim_selector ;
|
$this->scheduling_dkim_selector = $c->scheduling_dkim_selector ;
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}
|
}
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||||||
|
|
||||||
/**
|
/**
|
||||||
* gets the domainkey TXT record from DNS
|
* gets the domainkey TXT record from DNS
|
||||||
*/
|
*/
|
||||||
function getTxt ()
|
function getTxt ()
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||||||
{
|
{
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||||||
// TODO handle parents of subdomains and procuration records
|
// TODO handle parents of subdomains and procuration records
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||||||
$dkim = dns_get_record ( $this->remote_selector . '._domainkey.' . $this->remote_server , DNS_TXT );
|
$dkim = dns_get_record ( $this->remote_selector . '._domainkey.' . $this->remote_server , DNS_TXT );
|
||||||
if ( count ( $dkim ) > 0 )
|
if ( count ( $dkim ) > 0 )
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||||||
$this->dk = $dkim [ 0 ] [ 'txt' ];
|
$this->dk = $dkim [ 0 ] [ 'txt' ];
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||||||
else
|
else
|
||||||
{
|
{
|
||||||
$this->failed = true;
|
$this->failed = true;
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* parses DNS TXT record from domainkey lookup
|
* parses DNS TXT record from domainkey lookup
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||||||
*/
|
*/
|
||||||
function parseTxt ( )
|
function parseTxt ( )
|
||||||
{
|
{
|
||||||
if ( $this->failed == true )
|
if ( $this->failed == true )
|
||||||
return false;
|
return false;
|
||||||
$clean = preg_replace ( '/[\s\t]*([;=])[\s\t]*/', '$1', $this->dk );
|
$clean = preg_replace ( '/[\s\t]*([;=])[\s\t]*/', '$1', $this->dk );
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||||||
$pairs = preg_split ( '/;/', $clean );
|
$pairs = preg_split ( '/;/', $clean );
|
||||||
$this->parsed = array();
|
$this->parsed = array();
|
||||||
foreach ( $pairs as $v )
|
foreach ( $pairs as $v )
|
||||||
{
|
{
|
||||||
list($key,$value) = preg_split ( '/=/', $v, 2 );
|
list($key,$value) = preg_split ( '/=/', $v, 2 );
|
||||||
if ( preg_match ( '/(g|k|n|p|s|t|v)/', $key ) )
|
if ( preg_match ( '/(g|k|n|p|s|t|v)/', $key ) )
|
||||||
$this->parsed [ $key ] = $value;
|
$this->parsed [ $key ] = $value;
|
||||||
else
|
else
|
||||||
$this->parsed_ignored [ $key ] = $value;
|
$this->parsed_ignored [ $key ] = $value;
|
||||||
}
|
}
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* validates that domainkey is acceptable for the current request
|
* validates that domainkey is acceptable for the current request
|
||||||
*/
|
*/
|
||||||
function validateKey ( )
|
function validateKey ( )
|
||||||
{
|
{
|
||||||
$this->failed = true;
|
$this->failed = true;
|
||||||
if ( isset ( $this->parsed [ 's' ] ) )
|
if ( isset ( $this->parsed [ 's' ] ) )
|
||||||
{
|
{
|
||||||
if ( ! preg_match ( '/(\*|calendar)/', $this->parsed [ 's' ] ) )
|
if ( ! preg_match ( '/(\*|calendar)/', $this->parsed [ 's' ] ) )
|
||||||
return 'foo';
|
return false; // not a wildcard or calendar key
|
||||||
}
|
}
|
||||||
if ( isset ( $this->parsed [ 'k' ] ) && $this->parsed [ 'k' ] != 'rsa' )
|
if ( isset ( $this->parsed [ 'k' ] ) && $this->parsed [ 'k' ] != 'rsa' )
|
||||||
return false;
|
return false; // we only speak rsa for now
|
||||||
if ( isset ( $this->parsed [ 't' ] ) && ! preg_match ( '/^[y:s]+$/', $this->parsed [ 't' ] ) )
|
if ( isset ( $this->parsed [ 't' ] ) && ! preg_match ( '/^[y:s]+$/', $this->parsed [ 't' ] ) )
|
||||||
return false;
|
return false;
|
||||||
else
|
else
|
||||||
{
|
{
|
||||||
if ( preg_match ( '/y/', $this->parsed [ 't' ] ) )
|
if ( preg_match ( '/y/', $this->parsed [ 't' ] ) )
|
||||||
$this->failOnError = false;
|
$this->failOnError = false;
|
||||||
if ( preg_match ( '/s/', $this->parsed [ 't' ] ) )
|
if ( preg_match ( '/s/', $this->parsed [ 't' ] ) )
|
||||||
$this->subdomainsOK = false;
|
$this->subdomainsOK = false;
|
||||||
}
|
}
|
||||||
if ( isset ( $this->parsed [ 'g' ] ) )
|
if ( isset ( $this->parsed [ 'g' ] ) )
|
||||||
$this->remote_user_rule = $this->parsed [ 'g' ];
|
$this->remote_user_rule = $this->parsed [ 'g' ];
|
||||||
if ( isset ( $this->parsed [ 'p' ] ) )
|
else
|
||||||
{
|
$this->remote_user_rule = '*';
|
||||||
$data = "-----BEGIN PUBLIC KEY-----\n" . implode ("\n",str_split ( preg_replace ( '/_/', '', $this->parsed [ 'p' ] ), 64 )) . "\n-----END PUBLIC KEY-----";
|
if ( isset ( $this->parsed [ 'p' ] ) )
|
||||||
if ( $data === false )
|
{
|
||||||
return false;
|
$data = "-----BEGIN PUBLIC KEY-----\n" . implode ("\n",str_split ( preg_replace ( '/_/', '', $this->parsed [ 'p' ] ), 64 )) . "\n-----END PUBLIC KEY-----";
|
||||||
$this->remote_public_key = $data;
|
if ( $data === false )
|
||||||
}
|
return false;
|
||||||
else
|
$this->remote_public_key = $data;
|
||||||
return false;
|
}
|
||||||
$this->failed = false;
|
else
|
||||||
return true;
|
return false;
|
||||||
}
|
$this->failed = false;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* finds a remote calendar server via DNS SRV records
|
* finds a remote calendar server via DNS SRV records
|
||||||
*/
|
*/
|
||||||
function getServer ( )
|
function getServer ( )
|
||||||
{
|
{
|
||||||
$this->remote_ssl = false;
|
$this->remote_ssl = false;
|
||||||
$r = dns_get_record ( '_ischedules._tcp.' . $this->domain , DNS_SRV );
|
$r = dns_get_record ( '_ischedules._tcp.' . $this->domain , DNS_SRV );
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||||||
if ( 0 < count ( $r ) )
|
if ( 0 < count ( $r ) )
|
||||||
{
|
{
|
||||||
$remote_server = $r [ 0 ] [ 'target' ];
|
$remote_server = $r [ 0 ] [ 'target' ];
|
||||||
$remote_port = $r [ 0 ] [ 'port' ];
|
$remote_port = $r [ 0 ] [ 'port' ];
|
||||||
$this->remote_ssl = true;
|
$this->remote_ssl = true;
|
||||||
}
|
}
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||||||
if ( ! isset ( $remote_server ) )
|
if ( ! isset ( $remote_server ) )
|
||||||
{
|
{
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||||||
$r = dns_get_record ( '_ischedule._tcp.' . $this->domain , DNS_SRV );
|
$r = dns_get_record ( '_ischedule._tcp.' . $this->domain , DNS_SRV );
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if ( 0 < count ( $r ) )
|
if ( 0 < count ( $r ) )
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||||||
{
|
{
|
||||||
$remote_server = $r [ 0 ] [ 'target' ];
|
$remote_server = $r [ 0 ] [ 'target' ];
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$remote_port = $r [ 0 ] [ 'port' ];
|
$remote_port = $r [ 0 ] [ 'port' ];
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||||||
}
|
}
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||||||
}
|
}
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||||||
elseif ( $this->try_anyway == true )
|
elseif ( $this->try_anyway == true )
|
||||||
{
|
{
|
||||||
if ( ! isset ( $remote_server ) )
|
if ( ! isset ( $remote_server ) )
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||||||
$remote_server = $this->domain;
|
$remote_server = $this->domain;
|
||||||
if ( ! isset ( $remote_port ) )
|
if ( ! isset ( $remote_port ) )
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||||||
$remote_port = 80;
|
$remote_port = 80;
|
||||||
}
|
}
|
||||||
if ( ! isset ( $remote_server ) )
|
if ( ! isset ( $remote_server ) )
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||||||
return false;
|
return false;
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||||||
$this->remote_server = $remote_server;
|
$this->remote_server = $remote_server;
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||||||
$this->remote_port = $remote_port;
|
$this->remote_port = $remote_port;
|
||||||
}
|
}
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||||||
|
|
||||||
/**
|
/**
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||||||
* get capabilities from remote server
|
* get capabilities from remote server
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||||||
*/
|
*/
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||||||
function getCapabilities ( )
|
function getCapabilities ( )
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||||||
{
|
{
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$remote_capabilities = file_get_contents ( 'http'. ( $this->remote_ssl ? 's' : '' ) . '://' .
|
$remote_capabilities = file_get_contents ( 'http'. ( $this->remote_ssl ? 's' : '' ) . '://' .
|
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$this->remote_server . ':' . $this->remote_port .
|
$this->remote_server . ':' . $this->remote_port .
|
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'/.well-known/ischedule?query=capabilities' );
|
'/.well-known/ischedule?query=capabilities' );
|
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$xmltree = BuildXMLTree( $request->xml_tags, $position);
|
if ( $remote_capabilities === false )
|
||||||
if ( !is_object($xmltree) ) {
|
return false;
|
||||||
$request->DoResponse( 406, translate("REPORT body is not valid XML data!") );
|
$xml_parser = xml_parser_create_ns('UTF-8');
|
||||||
}
|
$this->xml_tags = array();
|
||||||
}
|
xml_parser_set_option ( $xml_parser, XML_OPTION_SKIP_WHITE, 1 );
|
||||||
|
xml_parser_set_option ( $xml_parser, XML_OPTION_CASE_FOLDING, 0 );
|
||||||
|
$rc = xml_parse_into_struct( $xml_parser, $remote_capabilities, $this->xml_tags );
|
||||||
|
if ( $rc == false ) {
|
||||||
|
dbg_error_log( 'ERROR', 'XML parsing error: %s at line %d, column %d',
|
||||||
|
xml_error_string(xml_get_error_code($xml_parser)),
|
||||||
|
xml_get_current_line_number($xml_parser), xml_get_current_column_number($xml_parser) );
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
xml_parser_free($xml_parser);
|
||||||
|
$xmltree = BuildXMLTree( $this->xml_tags );
|
||||||
|
if ( !is_object($xmltree) ) {
|
||||||
|
$request->DoResponse( 406, translate("REPORT body is not valid XML data!") );
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
$this->capbilities_xml = $xmltree;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* signs a POST body and headers
|
* signs a POST body and headers
|
||||||
*
|
*
|
||||||
* @param string $body the body of the POST
|
* @param string $body the body of the POST
|
||||||
* @param array $headers the headers to sign as passed to header ();
|
* @param array $headers the headers to sign as passed to header ();
|
||||||
*/
|
*/
|
||||||
function signDKIM ( $body, $headers )
|
function signDKIM ( $body, $headers )
|
||||||
{
|
{
|
||||||
$b = '';
|
$b = '';
|
||||||
if ( ! is_array ( $headers ) )
|
if ( ! is_array ( $headers ) )
|
||||||
return false;
|
return false;
|
||||||
foreach ( $headers as $v )
|
foreach ( $headers as $value )
|
||||||
$b .= $v . "\n";
|
{
|
||||||
$dk['s'] = $this->selector;
|
$b .= $value . "\n";
|
||||||
$dk['d'] = $this->domain;
|
}
|
||||||
$dk['c'] = 'simple-http';
|
$h = implode ( ':', array_keys ( $headers ) );
|
||||||
$dk['q'] = 'dns/txt';
|
$dk['s'] = $this->selector;
|
||||||
$dk['bh'] = base64_encode ( hash ( 'sha256', $body , true ) );
|
$dk['d'] = $this->domain;
|
||||||
//a=rsa-sha1; d=caveman.name; s=cal; c=simple-http; q=dns/txt; h=Originator:Recipient:Host:Content-Type; b
|
$dk['c'] = 'simple-http';
|
||||||
// XXX finish me
|
$dk['i'] = '@' . $_SERVER['SERVER_NAME']; //optional
|
||||||
}
|
$dk['q'] = 'dns/txt';
|
||||||
|
$dk['l'] = strlen ( $body ); //optional
|
||||||
|
$dk['bh'] = base64_encode ( hash ( 'sha256', $body , true ) );
|
||||||
|
//a=rsa-sha1; d=caveman.name; s=cal; c=simple-http; q=dns/txt; h=Originator:Recipient:Host:Content-Type; b
|
||||||
|
// XXX finish me
|
||||||
|
$value = 'DKIM-Signature: ';
|
||||||
|
foreach ( $dk as $key => $val )
|
||||||
|
$value = "$value$key=$val; ";
|
||||||
|
$value = $value . 'b=';
|
||||||
|
$value .= base64_encode ( hash ( 'sha256', $b . $value, true ) ) ;
|
||||||
|
header ( $value );
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* send request to remote server
|
||||||
|
*/
|
||||||
|
function sendRequest ( $address, $type, $data )
|
||||||
|
{
|
||||||
|
$this->domain = $address;
|
||||||
|
if ( ! $this->getServer ( ) )
|
||||||
|
{
|
||||||
|
$request->DoResponse( 403, translate('Server not found') );
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
if ( ! $this->getCapabilities ( ) )
|
||||||
|
{
|
||||||
|
$request->DoResponse( 403, translate('Server not found') );
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
// find names on 'urn:ietf:params:xml:ns:ischedule::supported-scheduling-message-set' comp name='vevent' method name='request'
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* parses and validates DK header
|
* parses and validates DK header
|
||||||
*
|
*
|
||||||
* @param string $sig the value of the DKIM-Signature header
|
* @param string $sig the value of the DKIM-Signature header
|
||||||
*/
|
*/
|
||||||
function parseDKIM ( $sig )
|
function parseDKIM ( $sig )
|
||||||
{
|
{
|
||||||
|
|
||||||
$this->failed = true;
|
$this->failed = true;
|
||||||
$tags = preg_split ( '/;[\s\t]/', $sig );
|
$tags = preg_split ( '/;[\s\t]/', $sig );
|
||||||
foreach ( $tags as $v )
|
foreach ( $tags as $v )
|
||||||
{
|
{
|
||||||
list($key,$value) = preg_split ( '/=/', $v, 2 );
|
list($key,$value) = preg_split ( '/=/', $v, 2 );
|
||||||
$dkim[$key] = $value;
|
$dkim[$key] = $value;
|
||||||
}
|
}
|
||||||
// the canonicalization method is currently undefined as of draft-01 of the iSchedule spec
|
// the canonicalization method is currently undefined as of draft-01 of the iSchedule spec
|
||||||
// but it does define the value, it should be simple-http. RFC4871 also defines two methods
|
// but it does define the value, it should be simple-http. RFC4871 also defines two methods
|
||||||
// simple and relaxed, simple is probably the same as simple http
|
// simple and relaxed, simple is probably the same as simple http
|
||||||
// relaxed allows for header case folding and whitespace folding, see section 3.4.4 or RFC4871
|
// relaxed allows for header case folding and whitespace folding, see section 3.4.4 or RFC4871
|
||||||
if ( ! preg_match ( '{(simple|simple-http|relaxed)(/(simple|simple-http|relaxed))?}', $dkim['c'], $matches ) ) // canonicalization method
|
if ( ! preg_match ( '{(simple|simple-http|relaxed)(/(simple|simple-http|relaxed))?}', $dkim['c'], $matches ) ) // canonicalization method
|
||||||
return 'bad canonicalization:' . $dkim['c'] ;
|
return 'bad canonicalization:' . $dkim['c'] ;
|
||||||
if ( count ( $matches ) > 2 )
|
if ( count ( $matches ) > 2 )
|
||||||
$this->body_cannon = $matches[2];
|
$this->body_cannon = $matches[2];
|
||||||
else
|
else
|
||||||
$this->body_cannon = $matches[1];
|
$this->body_cannon = $matches[1];
|
||||||
$this->header_cannon = $matches[1];
|
$this->header_cannon = $matches[1];
|
||||||
// signing algorythm REQUIRED
|
// signing algorythm REQUIRED
|
||||||
if ( $dkim['a'] != 'rsa-sha1' && $dkim['a'] != 'rsa-sha256' )
|
if ( $dkim['a'] != 'rsa-sha1' && $dkim['a'] != 'rsa-sha256' )
|
||||||
return 'bad signing algorythm:' . $dkim['a'] ;
|
return 'bad signing algorythm:' . $dkim['a'] ;
|
||||||
// query method to retrieve public key, could/should we add https to the spec? REQUIRED
|
// query method to retrieve public key, could/should we add https to the spec? REQUIRED
|
||||||
if ( $dkim['q'] != 'dns/txt' )
|
if ( $dkim['q'] != 'dns/txt' )
|
||||||
return 'bad query method';
|
return 'bad query method';
|
||||||
// domain of the signing entity REQUIRED
|
// domain of the signing entity REQUIRED
|
||||||
if ( ! isset ( $dkim['d'] ) )
|
if ( ! isset ( $dkim['d'] ) )
|
||||||
return 'missing signing domain';
|
return 'missing signing domain';
|
||||||
$this->remote_server = $dkim['d'];
|
$this->remote_server = $dkim['d'];
|
||||||
// identity of signing agent, OPTIONAL
|
// identity of signing agent, OPTIONAL
|
||||||
if ( isset ( $dkim['i'] ) )
|
if ( isset ( $dkim['i'] ) )
|
||||||
// if present, domain of the signing agent must be a match or a subdomain of the signing domain
|
// if present, domain of the signing agent must be a match or a subdomain of the signing domain
|
||||||
if ( ! stristr ( $dkim['i'], $dkim['d'] ) ) // RFC4871 does not specify a case match requirement
|
if ( ! stristr ( $dkim['i'], $dkim['d'] ) ) // RFC4871 does not specify a case match requirement
|
||||||
return 'signing domain mismatch';
|
return 'signing domain mismatch';
|
||||||
// grab the local part of the signing agent if it's an email address
|
// grab the local part of the signing agent if it's an email address
|
||||||
if ( strstr ( $dkim [ 'i' ], '@' ) )
|
if ( strstr ( $dkim [ 'i' ], '@' ) )
|
||||||
$this->remote_user = substr ( $dkim [ 'i' ], 0, strpos ( $dkim [ 'i' ], '@' ) - 1 );
|
$this->remote_user = substr ( $dkim [ 'i' ], 0, strpos ( $dkim [ 'i' ], '@' ) - 1 );
|
||||||
// selector used to retrieve public key REQUIRED
|
// selector used to retrieve public key REQUIRED
|
||||||
if ( ! isset ( $dkim['s'] ) )
|
if ( ! isset ( $dkim['s'] ) )
|
||||||
return 'missing selector';
|
return 'missing selector';
|
||||||
$this->remote_selector = $dkim['s'];
|
$this->remote_selector = $dkim['s'];
|
||||||
// signed header fields, colon seperated REQUIRED
|
// signed header fields, colon seperated REQUIRED
|
||||||
if ( ! isset ( $dkim['h'] ) )
|
if ( ! isset ( $dkim['h'] ) )
|
||||||
return 'missing list of signed headers';
|
return 'missing list of signed headers';
|
||||||
$this->signed_headers = preg_split ( '/:/', $dkim['h'] );
|
$this->signed_headers = preg_split ( '/:/', $dkim['h'] );
|
||||||
foreach ( $this->signed_headers as $h )
|
foreach ( $this->signed_headers as $h )
|
||||||
// signed header fields MUST actually be present in the request
|
// signed header fields MUST actually be present in the request
|
||||||
// DKIM Signature is NOT allowed in signed header fields per RFC4871
|
// DKIM Signature is NOT allowed in signed header fields per RFC4871
|
||||||
if ( ( ! isset ( $_SERVER['HTTP_' . strtr ( strtoupper ( $h ), '-', '_' ) ] ) &&
|
if ( ( ! isset ( $_SERVER['HTTP_' . strtr ( strtoupper ( $h ), '-', '_' ) ] ) &&
|
||||||
! isset ( $_SERVER[ strtr ( strtoupper ( $h ), '-', '_' ) ] ) )
|
! isset ( $_SERVER[ strtr ( strtoupper ( $h ), '-', '_' ) ] ) )
|
||||||
|| strtolower ( $h ) == 'dkim-signature' )
|
|| strtolower ( $h ) == 'dkim-signature' )
|
||||||
return "header $h is signed but missing from request";
|
return "header $h is signed but missing from request";
|
||||||
// body hash REQUIRED
|
// body hash REQUIRED
|
||||||
if ( ! isset ( $dkim['bh'] ) )
|
if ( ! isset ( $dkim['bh'] ) )
|
||||||
return 'missing body signature';
|
return 'missing body signature';
|
||||||
// signed header hash REQUIRED
|
// signed header hash REQUIRED
|
||||||
if ( ! isset ( $dkim['b'] ) )
|
if ( ! isset ( $dkim['b'] ) )
|
||||||
return 'missing signature in b field';
|
return 'missing signature in b field';
|
||||||
// length of body used for signing
|
// length of body used for signing
|
||||||
if ( isset ( $dkim['l'] ) )
|
if ( isset ( $dkim['l'] ) )
|
||||||
$this->signed_length = $dkim['l'];
|
$this->signed_length = $dkim['l'];
|
||||||
$this->failed = false;
|
$this->failed = false;
|
||||||
$this->DKSig = $dkim;
|
$this->DKSig = $dkim;
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* split up a mailto uri into domain and user components
|
* split up a mailto uri into domain and user components
|
||||||
*/
|
*/
|
||||||
function parseURI ( $uri )
|
function parseURI ( $uri )
|
||||||
{
|
{
|
||||||
if ( preg_match ( '/^mailto:([^@]+)@([^\s\t\n]+)/', $uri, $matches ) )
|
if ( preg_match ( '/^mailto:([^@]+)@([^\s\t\n]+)/', $uri, $matches ) )
|
||||||
{
|
{
|
||||||
$this->remote_user = $matches[1];
|
$this->remote_user = $matches[1];
|
||||||
$this->domain = $matches[2];
|
$this->domain = $matches[2];
|
||||||
}
|
}
|
||||||
else
|
else
|
||||||
return false;
|
return false;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* verifies parsed DKIM header is valid for current message with a signature from the public key in DNS
|
* verifies parsed DKIM header is valid for current message with a signature from the public key in DNS
|
||||||
*/
|
*/
|
||||||
function verifySignature ( )
|
function verifySignature ( )
|
||||||
{
|
{
|
||||||
global $request,$c;
|
global $request,$c;
|
||||||
$this->failed = true;
|
$this->failed = true;
|
||||||
$signed = '';
|
$signed = '';
|
||||||
foreach ( $this->signed_headers as $h )
|
foreach ( $this->signed_headers as $h )
|
||||||
if ( isset ( $_SERVER['HTTP_' . strtoupper ( strtr ( $h, '-', '_' ) ) ] ) )
|
if ( isset ( $_SERVER['HTTP_' . strtoupper ( strtr ( $h, '-', '_' ) ) ] ) )
|
||||||
$signed .= "$h: " . $_SERVER['HTTP_' . strtoupper ( strtr ( $h, '-', '_' ) ) ] . "\n";
|
$signed .= "$h: " . $_SERVER['HTTP_' . strtoupper ( strtr ( $h, '-', '_' ) ) ] . "\n";
|
||||||
else
|
else
|
||||||
$signed .= "$h: " . $_SERVER[ strtoupper ( strtr ( $h, '-', '_' ) ) ] . "\n";
|
$signed .= "$h: " . $_SERVER[ strtoupper ( strtr ( $h, '-', '_' ) ) ] . "\n";
|
||||||
$body = $request->raw_post;
|
if ( ! isset ( $_SERVER['HTTP_ORIGINATOR'] ) || stripos ( $signed, 'Originator' ) !== false ) //required header, must be signed
|
||||||
if ( ! isset ( $this->signed_length ) )
|
return false;
|
||||||
$this->signed_length = strlen ( $body );
|
if ( ! isset ( $_SERVER['HTTP_RECIPIENT'] ) || stripos ( $signed, 'Recipient' ) !== false ) //required header, must be signed
|
||||||
else
|
return false;
|
||||||
$body = substr ( $body, 0, $this->signed_length );
|
if ( ! isset ( $_SERVER['HTTP_ISCHEDULE_VERSION'] ) || $_SERVER['HTTP_ISCHEDULE_VERSION'] != '1' ) //required header and we only speak version 1 for now
|
||||||
if ( isset ( $this->remote_user_rule ) )
|
return false;
|
||||||
if ( $this->remote_user_rule != '*' && ! stristr ( $this->remote_user, $this->remote_user_rule ) )
|
$body = $request->raw_post;
|
||||||
return false;
|
if ( ! isset ( $this->signed_length ) )
|
||||||
$body_hash = base64_encode ( hash ( preg_replace ( '/^.*(sha[1256]+).*/','$1', $this->DKSig['a'] ), $body , true ) );
|
$this->signed_length = strlen ( $body );
|
||||||
if ( $this->DKSig['bh'] != $body_hash )
|
else
|
||||||
return false;
|
$body = substr ( $body, 0, $this->signed_length );
|
||||||
$sig = $_SERVER['HTTP_DKIM_SIGNATURE'];
|
if ( isset ( $this->remote_user_rule ) )
|
||||||
$sig = preg_replace ( '/ b=[^;\s\n\t]+/', ' b=', $sig );
|
if ( $this->remote_user_rule != '*' && ! stristr ( $this->remote_user, $this->remote_user_rule ) )
|
||||||
$sig = preg_replace ( '/[\r\n]*$/', '', $sig );
|
return false;
|
||||||
$signed .= 'DKIM-Signature: ' . $sig;
|
$body_hash = base64_encode ( hash ( preg_replace ( '/^.*(sha[1256]+).*/','$1', $this->DKSig['a'] ), $body , true ) );
|
||||||
$verify = openssl_verify ( $signed, base64_decode ( $this->DKSig['b'] ), $this->remote_public_key );
|
if ( $this->DKSig['bh'] != $body_hash )
|
||||||
if ( $verify != 1 )
|
return false;
|
||||||
return false;
|
$sig = $_SERVER['HTTP_DKIM_SIGNATURE'];
|
||||||
$this->failed = false;
|
$sig = preg_replace ( '/ b=[^;\s\n\t]+/', ' b=', $sig );
|
||||||
return true;
|
$sig = preg_replace ( '/[\r\n]*$/', '', $sig );
|
||||||
}
|
$signed .= 'DKIM-Signature: ' . $sig;
|
||||||
|
$verify = openssl_verify ( $signed, base64_decode ( $this->DKSig['b'] ), $this->remote_public_key );
|
||||||
|
if ( $verify != 1 )
|
||||||
|
return false;
|
||||||
|
$this->failed = false;
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* checks that current request has a valid DKIM signature signed by a currently valid key from DNS
|
* checks that current request has a valid DKIM signature signed by a currently valid key from DNS
|
||||||
*/
|
*/
|
||||||
function validateRequest ( )
|
function validateRequest ( )
|
||||||
{
|
{
|
||||||
global $request;
|
global $request;
|
||||||
if ( isset ( $_SERVER['HTTP_DKIM_SIGNATURE'] ) )
|
if ( isset ( $_SERVER['HTTP_DKIM_SIGNATURE'] ) )
|
||||||
$sig = $_SERVER['HTTP_DKIM_SIGNATURE'];
|
$sig = $_SERVER['HTTP_DKIM_SIGNATURE'];
|
||||||
else
|
else
|
||||||
$request->DoResponse( 403, translate('DKIM signature missing') );
|
{
|
||||||
|
$request->DoResponse( 403, translate('DKIM signature missing') );
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
$err = $this->parseDKIM ( $sig );
|
$err = $this->parseDKIM ( $sig );
|
||||||
if ( $err !== true || $this->failed )
|
if ( $err !== true || $this->failed )
|
||||||
$request->DoResponse( 403, translate('DKIM signature invalid ' ) . "\n" . $err . "\n" . $sig );
|
$request->DoResponse( 403, translate('DKIM signature invalid ' ) . "\n" . $err . "\n" . $sig );
|
||||||
if ( ! $this->getTxt () || $this->failed )
|
if ( ! $this->getTxt () || $this->failed )
|
||||||
$request->DoResponse( 403, translate('DKIM signature validation failed(DNS ERROR)') );
|
$request->DoResponse( 403, translate('DKIM signature validation failed(DNS ERROR)') );
|
||||||
if ( ! $this->parseTxt () || $this->failed )
|
if ( ! $this->parseTxt () || $this->failed )
|
||||||
$request->DoResponse( 403, translate('DKIM signature validation failed(KEY Parse ERROR)') );
|
$request->DoResponse( 403, translate('DKIM signature validation failed(KEY Parse ERROR)') );
|
||||||
if ( ! $this->validateKey () || $this->failed )
|
if ( ! $this->validateKey () || $this->failed )
|
||||||
$request->DoResponse( 403, translate('DKIM signature validation failed(KEY Validation ERROR)') );
|
$request->DoResponse( 403, translate('DKIM signature validation failed(KEY Validation ERROR)') );
|
||||||
if ( ! $this->verifySignature () || $this->failed )
|
if ( ! $this->verifySignature () || $this->failed )
|
||||||
$request->DoResponse( 403, translate('DKIM signature validation failed(Signature verification ERROR)') . $this->verifySignature() );
|
$request->DoResponse( 403, translate('DKIM signature validation failed(Signature verification ERROR)') . $this->verifySignature() );
|
||||||
return true;
|
return true;
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
$d = new iSchedule ();
|
$d = new iSchedule ();
|
||||||
if ( $d->validateRequest ( ) )
|
if ( $d->validateRequest ( ) )
|
||||||
{
|
{
|
||||||
include ( 'caldav-POST.php' );
|
//include ( 'caldav-POST.php' );
|
||||||
// @todo handle request.
|
// @todo handle request.
|
||||||
}
|
}
|
||||||
|
|||||||
Loading…
x
Reference in New Issue
Block a user