4 files changed, 167 insertions, 12 deletions
diff --git a/phpBB/docs/nginx.sample.conf b/phpBB/docs/nginx.sample.conf
index 2a11e057c5..40b6ee76da 100644
--- a/phpBB/docs/nginx.sample.conf
+++ b/phpBB/docs/nginx.sample.conf
@@ -10,14 +10,23 @@ http {
     gzip_vary on;
     gzip_http_version 1.1;
     gzip_min_length 700;
+    
+    # Compression levels over 6 do not give an appreciable improvement
+    # in compression ratio, but take more resources.
     gzip_comp_level 6;
-    gzip_disable "MSIE [1-6]\.";
+    
+    # IE 6 and lower do not support gzip with Vary correctly.
+    gzip_disable "msie6";
+    # Before nginx 0.7.63:
+    #gzip_disable "MSIE [1-6]\.";
 
     # Catch-all server for requests to invalid hosts.
     # Also catches vulnerability scanners probing IP addresses.
-    # Should be first.
     server {
-        listen 80;
+        # default specifies that this block is to be used when
+        # no other block matches.
+        listen 80 default;
+
         server_name bogus;
         return 444;
         root /var/empty;
@@ -26,14 +35,20 @@ http {
     # If you have domains with and without www prefix,
     # redirect one to the other.
     server {
-        listen 80;
+        # Default port is 80.
+        #listen 80;
+
         server_name myforums.com;
-        rewrite ^(.*)$ http://www.myforums.com$1 permanent;
+
+        # A trick from http://wiki.nginx.org/Pitfalls#Taxing_Rewrites:
+        rewrite ^ http://www.myforums.com$request_uri permanent;
+        # Equivalent to:
+        #rewrite ^(.*)$ http://www.myforums.com$1 permanent;
     }
 
     # The actual board domain.
     server {
-        listen 80;
+        #listen 80;
         server_name www.myforums.com;
 
         root /path/to/phpbb;
@@ -45,8 +60,10 @@ http {
 
         # Deny access to internal phpbb files.
         location ~ /(config\.php|common\.php|includes|cache|files|store|images/avatars/upload) {
-            internal;
             deny all;
+            # deny was ignored before 0.8.40 for connections over IPv6.
+            # Use internal directive to prohibit access on older versions.
+            internal;
         }
 
         # Pass the php scripts to fastcgi server specified in upstream declaration.
@@ -60,8 +77,8 @@ http {
 
         # Deny access to version control system directories.
         location ~ /\.svn|/\.git {
-            internal;
             deny all;
+            internal;
         }
     }
 
diff --git a/phpBB/includes/db/firebird.php b/phpBB/includes/db/firebird.php
index 6f60dd5dad..7e3f15ed1d 100644
--- a/phpBB/includes/db/firebird.php
+++ b/phpBB/includes/db/firebird.php
@@ -28,6 +28,7 @@ class dbal_firebird extends dbal
 	var $last_query_text = '';
 	var $service_handle = false;
 	var $affected_rows = 0;
+	var $connect_error = '';
 
 	/**
 	* Connect to server
@@ -53,9 +54,35 @@ class dbal_firebird extends dbal
 			$use_database = $this->server . ':' . $this->dbname;
 		}
 
-		$this->db_connect_id = ($this->persistency) ? @ibase_pconnect($use_database, $this->user, $sqlpassword, false, false, 3) : @ibase_connect($use_database, $this->user, $sqlpassword, false, false, 3);
+		if ($this->persistency)
+		{
+			if (!function_exists('ibase_pconnect'))
+			{
+				$this->connect_error = 'ibase_pconnect function does not exist, is interbase extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @ibase_pconnect($use_database, $this->user, $sqlpassword, false, false, 3);
+		}
+		else
+		{
+			if (!function_exists('ibase_connect'))
+			{
+				$this->connect_error = 'ibase_connect function does not exist, is interbase extension installed?';
+				return $this->sql_error('');
+			}
+			$this->db_connect_id = @ibase_connect($use_database, $this->user, $sqlpassword, false, false, 3);
+		}
 
-		$this->service_handle = (function_exists('ibase_service_attach') && $this->server) ? @ibase_service_attach($this->server, $this->user, $sqlpassword) : false;
+		// Do not call ibase_service_attach if connection failed,
+		// otherwise error message from ibase_(p)connect call will be clobbered.
+		if ($this->db_connect_id && function_exists('ibase_service_attach') && $this->server)
+		{
+			$this->service_handle = @ibase_service_attach($this->server, $this->user, $sqlpassword);
+		}
+		else
+		{
+			$this->service_handle = false;
+		}
 
 		return ($this->db_connect_id) ? $this->db_connect_id : $this->sql_error('');
 	}
@@ -471,8 +498,24 @@ class dbal_firebird extends dbal
 	*/
 	function _sql_error()
 	{
+		// Need special handling here because ibase_errmsg returns
+		// connection errors, however if the interbase extension
+		// is not installed then ibase_errmsg does not exist and
+		// we cannot call it.
+		if (function_exists('ibase_errmsg'))
+		{
+			$msg = @ibase_errmsg();
+			if (!$msg)
+			{
+				$msg = $this->connect_error;
+			}
+		}
+		else
+		{
+			$msg = $this->connect_error;
+		}
 		return array(
-			'message'	=> @ibase_errmsg(),
+			'message'	=> $msg,
 			'code'		=> (@function_exists('ibase_errcode') ? @ibase_errcode() : '')
 		);
 	}
diff --git a/phpBB/includes/db/postgres.php b/phpBB/includes/db/postgres.php
index 4360c790a1..bb116e0763 100644
--- a/phpBB/includes/db/postgres.php
+++ b/phpBB/includes/db/postgres.php
@@ -18,6 +18,11 @@ if (!defined('IN_PHPBB'))
 
 include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 
+if (!class_exists('phpbb_error_collector'))
+{
+	include($phpbb_root_path . 'includes/error_collector.' . $phpEx);
+}
+
 /**
 * PostgreSQL Database Abstraction Layer
 * Minimum Requirement is Version 7.3+
@@ -26,6 +31,7 @@ include_once($phpbb_root_path . 'includes/db/dbal.' . $phpEx);
 class dbal_postgres extends dbal
 {
 	var $last_query_text = '';
+	var $connect_error = '';
 
 	/**
 	* Connect to server
@@ -81,13 +87,29 @@ class dbal_postgres extends dbal
 
 		if ($this->persistency)
 		{
+			if (!function_exists('pg_pconnect'))
+			{
+				$this->connect_error = 'pg_pconnect function does not exist, is pgsql extension installed?';
+				return $this->sql_error('');
+			}
+			$collector = new phpbb_error_collector;
+			$collector->install();
 			$this->db_connect_id = (!$new_link) ? @pg_pconnect($connect_string) : @pg_pconnect($connect_string, PGSQL_CONNECT_FORCE_NEW);
 		}
 		else
 		{
+			if (!function_exists('pg_connect'))
+			{
+				$this->connect_error = 'pg_connect function does not exist, is pgsql extension installed?';
+				return $this->sql_error('');
+			}
+			$collector = new phpbb_error_collector;
+			$collector->install();
 			$this->db_connect_id = (!$new_link) ? @pg_connect($connect_string) : @pg_connect($connect_string, PGSQL_CONNECT_FORCE_NEW);
 		}
 
+		$collector->uninstall();
+
 		if ($this->db_connect_id)
 		{
 			if (version_compare($this->sql_server_info(true), '8.2', '>='))
@@ -102,6 +124,7 @@ class dbal_postgres extends dbal
 			return $this->db_connect_id;
 		}
 
+		$this->connect_error = $collector->format_errors();
 		return $this->sql_error('');
 	}
 
@@ -371,8 +394,19 @@ class dbal_postgres extends dbal
 	*/
 	function _sql_error()
 	{
+		// pg_last_error only works when there is an established connection.
+		// Connection errors have to be tracked by us manually.
+		if ($this->db_connect_id)
+		{
+			$message = @pg_last_error($this->db_connect_id);
+		}
+		else
+		{
+			$message = $this->connect_error;
+		}
+
 		return array(
-			'message'	=> (!$this->db_connect_id) ? @pg_last_error() : @pg_last_error($this->db_connect_id),
+			'message'	=> $message,
 			'code'		=> ''
 		);
 	}
diff --git a/phpBB/includes/error_collector.php b/phpBB/includes/error_collector.php
new file mode 100644
index 0000000000..55834f354c
--- /dev/null
+++ b/phpBB/includes/error_collector.php
@@ -0,0 +1,61 @@
+<?php
+/**
+*
+* @package phpBB
+* @version $Id$
+* @copyright (c) 2011 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+	exit;
+}
+
+class phpbb_error_collector
+{
+	var $errors;
+
+	function phpbb_error_collector()
+	{
+		$this->errors = array();
+	}
+
+	function install()
+	{
+		set_error_handler(array(&$this, 'error_handler'));
+	}
+
+	function uninstall()
+	{
+		restore_error_handler();
+	}
+
+	function error_handler($errno, $msg_text, $errfile, $errline)
+	{
+		$this->errors[] = array($errno, $msg_text, $errfile, $errline);
+	}
+
+	function format_errors()
+	{
+		$text = '';
+		foreach ($this->errors as $error)
+		{
+			if (!empty($text))
+			{
+				$text .= "<br />\n";
+			}
+			list($errno, $msg_text, $errfile, $errline) = $error;
+			$text .= "Errno $errno: $msg_text";
+			if (defined('DEBUG_EXTRA') || defined('IN_INSTALL'))
+			{
+				$text .= " at $errfile line $errline";
+			}
+		}
+		return $text;
+	}
+}