Merge branch '0.8.x' into 0.9.x

Conflicts:
	actions/requesttoken.php
	classes/File.php
	install.php
	lib/noticeform.php

1 files changed, 22 insertions, 6 deletions

diff --git a/install.php b/install.php
index 46248c789..c2ca7e119 100644
--- a/install.php
+++ b/install.php
@@ -256,6 +256,15 @@ function haveExternalLibrary($external_library)
     return true;
 }
 
+// Attempt to include a PHP file and report if it worked, while
+// suppressing the annoying warning messages on failure.
+function haveIncludeFile($filename) {
+    $old = error_reporting(error_reporting() & ~E_WARNING);
+    $ok = include_once($filename);
+    error_reporting($old);
+    return $ok;
+}
+
 /**
  * Check if all is ready for installation
  *
@@ -328,12 +337,19 @@ function checkPrereqs()
  */
 function checkExtension($name)
 {
-    if (!extension_loaded($name)) {
-        if (!@dl($name.'.so')) {
-            return false;
-        }
+    if (extension_loaded($name)) {
+        return true;
+    } elseif (function_exists('dl') && ini_get('enable_dl') && !ini_get('safe_mode')) {
+    	// dl will throw a fatal error if it's disabled or we're in safe mode.
+    	// More fun, it may not even exist under some SAPIs in 5.3.0 or later...
+    	$soname = $name . '.' . PHP_SHLIB_SUFFIX;
+    	if (PHP_SHLIB_SUFFIX == 'dll') {
+    		$soname = "php_" . $soname;
+    	}
+    	return @dl($soname);
+    } else {
+        return false;
     }
-    return true;
 }
 
 /**
@@ -390,7 +406,7 @@ E_O_T;
 E_O_T;
     foreach ($present_libraries as $library) {
         echo '<li>';
-        if ($library['url']) {
+        if (isset($library['url'])) {
             echo '<a href=">'.$library['url'].'">'.htmlentities($library['name']).'</a>';
         } else {
             echo htmlentities($library['name']);