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<?php |
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namespace CILogon\Service; |
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use CILogon\Service\Util; |
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/** |
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* MyProxy |
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*/ |
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class MyProxy |
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{ |
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/** |
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* getMyProxyCredential |
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* |
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* This function gets an X.509 credential (as a string) for a user. |
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* |
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* @param string $username The MyProxy user name (-l) |
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* @param string $passphrase (Optional) The MyProxy password for the |
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* username (-S). Defaults to empty string. NOTE: If $passphrase |
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* is non-empty, you CANNOT set a $certreq. |
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* @param string $server (Optional) The MyProxy server to connect to (-s). |
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* Defaults to MYPROXY_HOST. |
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* @param int $port (Optional) The port for the MyProxy server (-p). |
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* Defaults to MYPROXY_PORT. |
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* @param int $lifetime (Optional) The life of the proxy in hours (-t). |
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* Defaults to MYPROXY_LIFETIME hours. |
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* @param string $usercert (Optional) The X509_USER_CERT environment |
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* variable, OR the X509_USER_PROXY environment variable if |
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* $userkey is set to the empty string. Defaults to empty string. |
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* @param string $userkey (Optional) The X509_USER_KEY environment |
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* variable. Defaults to empty string. |
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* @param string $certreq (Optional) A certificate request created by the |
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* openssl req command (--certreq). Defaults to empty string. |
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* NOTE: If $certreq is non-empty, you CANNOT set a $passphrase. |
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* @param string $env (Optional) Extra environment variables in the form |
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* of space-separated 'key=value' pairs. |
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* @return string An X509 credential in a string upon success, or |
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* an empty string upon failure. |
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*/ |
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public static function getMyProxyCredential( |
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$username, |
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$passphrase = '', |
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$server = MYPROXY_HOST, |
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$port = MYPROXY_PORT, |
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$lifetime = MYPROXY_LIFETIME, |
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$usercert = '', |
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$userkey = '', |
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$certreq = '', |
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$env = '' |
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) { |
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$retstr = ''; |
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// Verify the myproxy-logon binary has been configured |
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if ((!defined('MYPROXY_LOGON')) || (empty(MYPROXY_LOGON))) { |
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Util::sendErrorAlert( |
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'getMyProxyCredential Error', |
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'MyProxy Error = myproxy-logon binary not configured' |
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); |
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return $retstr; |
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} |
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// Make sure the username passed in is not empty |
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if (strlen($username) == 0) { |
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Util::sendErrorAlert( |
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'getMyProxyCredential Error', |
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'MyProxy Error = Missing MyProxy username' |
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); |
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return $retstr; |
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} |
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// Don't allow weird port numbers, i.e. negative or over 65535 |
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if (($port < 0) || ($port > 65535)) { |
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$port = MYPROXY_PORT; |
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} |
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// Don't allow weird lifetimes, i.e. negative or over 5 years |
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if (($lifetime < 0) || ($lifetime > 43800)) { |
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$lifetime = MYPROXY_LIFETIME; |
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} |
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// If the usercert (X509_USER_CERT) is specified, check to see if |
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// the userkey (X509_USER_KEY) was as well. If not, set userkey to |
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// usercert, in effect making usercert act like X509_USER_PROXY. Then, |
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// set the USER_CERT_ENV variable to bundle the two parameters into a |
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// single variable holding the two X509_USER_* environment variables. |
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$USER_CERT_ENV = ''; |
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if (strlen($usercert) > 0) { |
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if (strlen($userkey) == 0) { |
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$userkey = $usercert; |
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} |
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$USER_CERT_ENV = 'X509_USER_CERT=' . escapeshellarg($usercert) . |
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' ' . |
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'X509_USER_KEY=' . escapeshellarg($userkey); |
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} |
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// Run the myproxy-logon command and capture the output and any error |
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$output = array(); |
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$cmd = '/bin/env ' . |
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$USER_CERT_ENV . ' ' . |
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$env . ' ' . |
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'MYPROXY_SOCKET_TIMEOUT=1 ' . |
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MYPROXY_LOGON . ' ' . |
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' -s ' . escapeshellarg($server) . |
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" -p $port" . |
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" -t $lifetime" . |
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' -l ' . escapeshellarg($username) . |
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' -S -o -' . |
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((strlen($certreq) > 0) ? |
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(' --certreq - <<< ' . escapeshellarg($certreq)) : '') . |
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((strlen($passphrase) > 0) ? |
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(' <<< ' . escapeshellarg($passphrase)) : ' -n') . |
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' 2>&1'; |
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exec($cmd, $output, $return_val); |
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$retstr = implode("\n", $output); |
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if ($return_val > 0) { |
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Util::sendErrorAlert( |
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'getMyProxyCredential Error', |
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"MyProxy Error = $return_val\nMyProxy Output= $retstr" |
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); |
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$retstr = ''; |
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} |
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return $retstr; |
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} |
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/** |
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* getDefaultLifetime |
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* |
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* This function returns the value of the class defined |
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* MYPROXY_LIFETIME as an int, which may be needed in '/secure/getuser' |
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* when getting a certificate. |
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* |
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* @return int The value of MYPROXY_LIFETIME |
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*/ |
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public static function getDefaultLifetime() |
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{ |
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return (int)MYPROXY_LIFETIME; |
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} |
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} |
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