From 7c0215018897bfb578e6116ef9d36e5edc1fe5cf Mon Sep 17 00:00:00 2001
From: Steve Clay <steve@mrclay.org>
Date: Wed, 16 May 2012 11:27:25 -0400
Subject: Fixes #2411: Show message when upload exceeds PHP limits, and show
 limits in Server Info

---
 engine/lib/actions.php                        | 15 +++++++++++++--
 languages/en.php                              |  4 ++++
 views/default/admin/statistics/server/php.php | 17 +++++++++++++++++
 3 files changed, 34 insertions(+), 2 deletions(-)

diff --git a/engine/lib/actions.php b/engine/lib/actions.php
index c6613e6d6..3a7c02488 100644
--- a/engine/lib/actions.php
+++ b/engine/lib/actions.php
@@ -273,8 +273,19 @@ function validate_action_token($visibleerrors = TRUE, $token = NULL, $ts = NULL)
 		} else if ($visibleerrors) {
 			register_error(elgg_echo('actiongatekeeper:tokeninvalid'));
 		}
-	} else if ($visibleerrors) {
-		register_error(elgg_echo('actiongatekeeper:missingfields'));
+	} else {
+		if (! empty($_SERVER['CONTENT_LENGTH']) && empty($_POST)) {
+			// The size of $_POST or uploaded file has exceed the size limit
+			$error_msg = elgg_trigger_plugin_hook('action_gatekeeper:upload_exceeded_msg', 'all', array(
+				'post_size' => $_SERVER['CONTENT_LENGTH'],
+				'visible_errors' => $visibleerrors,
+			), elgg_echo('actiongatekeeper:uploadexceeded'));
+		} else {
+			$error_msg = elgg_echo('actiongatekeeper:missingfields');
+		}
+		if ($visibleerrors) {
+			register_error($error_msg);
+		}
 	}
 
 	return FALSE;
diff --git a/languages/en.php b/languages/en.php
index 7b51b0c7d..ff730a018 100644
--- a/languages/en.php
+++ b/languages/en.php
@@ -741,6 +741,9 @@ $english = array(
 	'admin:server:label:mem_avail' => 'Memory available',
 	'admin:server:label:mem_used' => 'Memory used',
 	'admin:server:error_log' => "Web server's error log",
+	'admin:server:label:post_max_size' => 'POST maximum size',
+	'admin:server:label:upload_max_filesize' => 'Upload maximum size',
+	'admin:server:warning:post_max_too_small' => '(Note: <code>post_max_size</code> must be larger than this value to support uploads of this size)',
 
 	'admin:user:label:search' => "Find users:",
 	'admin:user:label:searchbutton' => "Search",
@@ -1171,6 +1174,7 @@ You cannot reply to this email.",
 	'actiongatekeeper:tokeninvalid' => "We encountered an error (token mismatch). This probably means that the page you were using expired.",
 	'actiongatekeeper:timeerror' => 'The page you were using has expired. Please refresh and try again.',
 	'actiongatekeeper:pluginprevents' => 'A extension has prevented this form from being submitted.',
+	'actiongatekeeper:uploadexceeded' => 'The size of file(s) uploaded exceeded the limit set by your site administrator',
 
 
 /**
diff --git a/views/default/admin/statistics/server/php.php b/views/default/admin/statistics/server/php.php
index 4a59b95fb..7c6a51383 100644
--- a/views/default/admin/statistics/server/php.php
+++ b/views/default/admin/statistics/server/php.php
@@ -8,6 +8,15 @@ if (!$php_log) {
 	$php_log = elgg_echo('admin:server:error_log');
 }
 
+$post_max_size = elgg_get_ini_setting_in_bytes('post_max_size');
+$upload_max_filesize = elgg_get_ini_setting_in_bytes('upload_max_filesize');
+
+$post_max_size_warning = '';
+if ($upload_max_filesize > $post_max_size) {
+	// @todo show a link to something like http://nigel.mcnie.name/blog/uploadmaxfilesizepostmaxsize-experimentation ?
+	$post_max_size_warning = elgg_echo('admin:server:warning:post_max_too_small');
+}
+
 ?>
 <table class="elgg-table-alt">
 	<tr class="odd">
@@ -30,4 +39,12 @@ if (!$php_log) {
 		<td><b><?php echo elgg_echo('admin:server:label:mem_used'); ?> :</b></td>
 		<td><?php echo number_format(memory_get_peak_usage()); ?></td>
 	</tr>
+	<tr class="even">
+		<td><b><?php echo elgg_echo('admin:server:label:post_max_size'); ?> :</b></td>
+		<td><?php echo number_format($post_max_size); ?></td>
+	</tr>
+	<tr class="odd">
+		<td><b><?php echo elgg_echo('admin:server:label:upload_max_filesize'); ?> :</b></td>
+		<td><?php echo number_format($upload_max_filesize) . '&nbsp; ' . $post_max_size_warning; ?></td>
+	</tr>
 </table>
-- 
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