diff options
| -rw-r--r-- | Auth/OpenID/BigMath.php | 21 | ||||
| -rw-r--r-- | README | 10 | ||||
| -rw-r--r-- | admin/texttest.php | 4 |
3 files changed, 26 insertions, 9 deletions
diff --git a/Auth/OpenID/BigMath.php b/Auth/OpenID/BigMath.php index 3113104..c4c75f6 100644 --- a/Auth/OpenID/BigMath.php +++ b/Auth/OpenID/BigMath.php @@ -336,14 +336,19 @@ class Auth_OpenID_GmpMathWrapper extends Auth_OpenID_MathLibrary{ * this array. */ global $_Auth_OpenID_math_extensions; -$_Auth_OpenID_math_extensions = array( - array('modules' => array('gmp', 'php_gmp'), - 'extension' => 'gmp', - 'class' => 'Auth_OpenID_GmpMathWrapper'), - array('modules' => array('bcmath', 'php_bcmath'), - 'extension' => 'bcmath', - 'class' => 'Auth_OpenID_BcMathWrapper') - ); +$_Auth_OpenID_math_extensions = array(); + +if (!defined('Auth_OpenID_BUGGY_GMP')) { + $_Auth_OpenID_math_extensions[] = + array('modules' => array('gmp', 'php_gmp'), + 'extension' => 'gmp', + 'class' => 'Auth_OpenID_GmpMathWrapper'); +} + +$_Auth_OpenID_math_extensions[] = array( + 'modules' => array('bcmath', 'php_bcmath'), + 'extension' => 'bcmath', + 'class' => 'Auth_OpenID_BcMathWrapper'); /** * Detect which (if any) math library is available @@ -75,13 +75,21 @@ examples/README file for more details. TROUBLESHOOTING =============== -On some systems, PHP basedir restrictions prevent web servers from +* On some systems, PHP basedir restrictions prevent web servers from opening a source of randomness, such as /dev/urandom. If your PHP OpenID library has trouble getting a satisfactory source of randomness, check your Apache and PHP configurations to be sure that the randomness source is in the list of allowed paths for the "open_basedir" option. +* In some cases, bugs in the GMP math library will result in signature +validation errors when using this library. Since GMP is preferred +over bcmath (for performance), you will have to define +Auth_OpenID_BUGGY_GMP in your application *before* importing any of +the library code: + + define('Auth_OpenID_BUGGY_GMP', true); + GETTING HELP ============ diff --git a/admin/texttest.php b/admin/texttest.php index bb01eee..c2945f7 100644 --- a/admin/texttest.php +++ b/admin/texttest.php @@ -45,6 +45,7 @@ function microtime_float() } $longopts = array('no-math', + 'buggy-gmp', 'no-curl', 'math-lib=', 'insecure-rand', @@ -73,6 +74,9 @@ foreach ($flags as $flag) { case '--no-math': define('Auth_OpenID_NO_MATH_SUPPORT', true); break; + case '--buggy-gmp': + define('Auth_OpenID_BUGGY_GMP', true); + break; case '--no-curl': define('Auth_Yadis_CURL_OVERRIDE', true); break; |