CertificationAuthorityEduPkiServer::sendRequestToCa()

Complexity

Conditions	14
Paths	691

Size

Total Lines	125
Code Lines	88

Duplication

Lines	0
Ratio	0 %

Importance

Changes	2
Bugs	0	Features	0

<?php
    public function sendRequestToCa($csr, $revocationPin, $expiryDays): int
    {
        // initialise connection to eduPKI CA / eduroam RA and send the request to them
        try {            
            if (in_array("eduroam IdP", $csr["POLICIES"]) && in_array("eduroam SP", $csr["POLICIES"])) {
                $profile = CertificationAuthorityEduPkiServer::EDUPKI_CERT_PROFILE_BOTH;
            } elseif (in_array("eduroam IdP", $csr["POLICIES"])) {
                $profile = CertificationAuthorityEduPkiServer::EDUPKI_CERT_PROFILE_IDP;
            } elseif (in_array("eduroam IdP", $csr["POLICIES"])) {
                $profile = CertificationAuthorityEduPkiServer::EDUPKI_CERT_PROFILE_SP;
            } else {
                throw new Exception("Unexpected policies requested.");
            }
            $altArray = [# Array mit den Subject Alternative Names
                "email:" . $csr["USERMAIL"]
            ];
            foreach ($csr["ALTNAMES"] as $oneAltName) {
                $altArray[] = "DNS:" . $oneAltName;
            }
            $soapPub = $this->initEduPKISoapSession("PUBLIC");
            $this->loggerInstance->debug(5, "FIRST ACTUAL SOAP REQUEST (Public, newRequest)!\n");
            $this->loggerInstance->debug(5, "PARAM_1: " . CertificationAuthorityEduPkiServer::EDUPKI_RA_ID . "\n");
            $this->loggerInstance->debug(5, "PARAM_2: " . $csr["CSR_STRING"] . "\n");
            $this->loggerInstance->debug(5, "PARAM_3: ");
            $this->loggerInstance->debug(5, $altArray);
            $this->loggerInstance->debug(5, "PARAM_4: " . $profile . "\n");
            $this->loggerInstance->debug(5, "PARAM_5: " . sha1("notused") . "\n");
            $this->loggerInstance->debug(5, "PARAM_6: " . $csr["USERNAME"] . "\n");
            $this->loggerInstance->debug(5, "PARAM_7: " . $csr["USERMAIL"] . "\n");
            $this->loggerInstance->debug(5, "PARAM_8: " . ProfileSilverbullet::PRODUCTNAME . "\n");
            $this->loggerInstance->debug(5, "PARAM_9: false\n");
            $soapNewRequest = $soapPub->newRequest(
                    CertificationAuthorityEduPkiServer::EDUPKI_RA_ID, # RA-ID
                    $csr["CSR_STRING"], # Request im PEM-Format
                    $altArray, # altNames
                    $profile, # Zertifikatprofil
                    sha1($revocationPin), # PIN
                    $csr["USERNAME"], # Name des Antragstellers
                    $csr["USERMAIL"], # Kontakt-E-Mail
                    ProfileSilverbullet::PRODUCTNAME, # Organisationseinheit des Antragstellers
                    false                   # Veröffentlichen des Zertifikats?
            );
            $this->loggerInstance->debug(5, $soapPub->__getLastRequest());
            $this->loggerInstance->debug(5, $soapPub->__getLastResponse());
            if ($soapNewRequest == 0) {
                throw new Exception("Error when sending SOAP request (request serial number was zero). No further details available.");
            }
            $soapReqnum = intval($soapNewRequest);
        } catch (Exception $e) {
            // PHP 7.1 can do this much better
            if (is_soap_fault($e)) {
                throw new Exception("Error when sending SOAP request: " . "{$e->faultcode}:  {
                    $e->faultstring
                }\n");
            }
            throw new Exception("Something odd happened while doing the SOAP request:" . $e->getMessage());
        }
        try {
            $soap = $this->initEduPKISoapSession("RA");
            // tell the CA the desired expiry date of the new certificate
            $expiry = new \DateTime();
            $expiry->modify("+$expiryDays day");
            $expiry->setTimezone(new \DateTimeZone("UTC"));
            $soapExpiryChange = $soap->setRequestParameters(
                    $soapReqnum, [
                "RaID" => CertificationAuthorityEduPkiServer::EDUPKI_RA_ID,
                "Role" => $profile,
                "Subject" => $csr['SUBJECT'],
                "SubjectAltNames" => $altArray,
                "NotBefore" => (new \DateTime())->format('c'),
                "NotAfter" => $expiry->format('c'),
                    ]
            );
            if ($soapExpiryChange === FALSE) {
                throw new Exception("Error when sending SOAP request (unable to change expiry date).");
            }
            // retrieve the raw request to prepare for signature and approval
            // this seems to come out base64-decoded already; maybe PHP
            // considers this "convenience"? But we need it as sent on
            // the wire, so re-encode it!
            $soapCleartext = $soap->getRawRequest($soapReqnum);

            $this->loggerInstance->debug(5, "Actual received SOAP response for getRawRequest was:\n\n");
            $this->loggerInstance->debug(5, $soap->__getLastResponse());
            // for obnoxious reasons, we have to dump the request into a file and let pkcs7_sign read from the file
            // rather than just using the string. Grr.
            $tempdir = \core\common\Entity::createTemporaryDirectory("test");
            file_put_contents($tempdir['dir'] . "/content.txt", $soapCleartext);
            // retrieve our RA cert from filesystem                    
            // the RA certificates are not needed right now because we
            // have resorted to S/MIME signatures with openssl command-line
            // rather than the built-in functions. But that may change in
            // the future, so let's park these two lines for future use.
            // $raCertFile = file_get_contents(ROOT . "/config/SilverbulletClientCerts/edupki-test-ra.pem");
            // $raCert = openssl_x509_read($raCertFile);
            // $raKey = openssl_pkey_get_private("file://" . ROOT . "/config/SilverbulletClientCerts/edupki-test-ra.clearkey");
            // sign the data, using cmdline because openssl_pkcs7_sign produces strange results
            // -binary didn't help, nor switch -md to sha1 sha256 or sha512
            $this->loggerInstance->debug(5, "Actual content to be signed is this:\n  $soapCleartext\n");
            $execCmd = \config\Master::PATHS['openssl'] . " smime -sign -binary -in " . $tempdir['dir'] . "/content.txt -out " . $tempdir['dir'] . "/signature.txt -outform pem -inkey " . CertificationAuthorityEduPkiServer::LOCATION_RA_KEY . " -signer " . CertificationAuthorityEduPkiServer::LOCATION_RA_CERT;
            $this->loggerInstance->debug(2, "Calling openssl smime with following cmdline:   $execCmd\n");
            $output = [];
            $return = 999;
            exec($execCmd, $output, $return);
            if ($return !== 0) {
                throw new Exception("Non-zero return value from openssl smime!");
            }
            // and get the signature blob back from the filesystem
            $detachedSig = trim(file_get_contents($tempdir['dir'] . "/signature.txt"));
            $this->loggerInstance->debug(5, "Request for server approveRequest has parameters:\n");
            $this->loggerInstance->debug(5, $soapReqnum . "\n");
            $this->loggerInstance->debug(5, $soapCleartext . "\n"); // PHP magically encodes this as base64 while sending!
            $this->loggerInstance->debug(5, $detachedSig . "\n");
            $soapIssueCert = $soap->approveRequest($soapReqnum, $soapCleartext, $detachedSig);
            $this->loggerInstance->debug(5, "approveRequest Request was: \n" . $soap->__getLastRequest());
            $this->loggerInstance->debug(5, "approveRequest Response was: \n" . $soap->__getLastResponse());
            if ($soapIssueCert === FALSE) {
                throw new Exception("The locally approved request was NOT processed by the CA.");
            }
        } catch (SoapFault $e) {
            throw new Exception("SoapFault: Error when sending or receiving SOAP message: " . "{$e->faultcode}: {$e->faultname}: {$e->faultstring}: {$e->faultactor}: {$e->detail}: {$e->headerfault}\n");
        } catch (Exception $e) {
            throw new Exception("Exception: Something odd happened between the SOAP requests:" . $e->getMessage());
        }
        return $soapReqnum;
    }