X-Git-Url: http://git.osdn.net/view?a=blobdiff_plain;f=lib%2Fplugin.php;h=1bfcc3ded993978d56b97a5d8a6d5e1874a5446e;hb=a6cac21c76c2e94d8b90a26a59764b7e0e4cfb81;hp=6e994a641eab2469387ea506f37b3fa52ce3a240;hpb=e923786be4e4997d8508c9e8ec0465c44b5e1c00;p=pukiwiki%2Fpukiwiki.git

diff --git a/lib/plugin.php b/lib/plugin.php
index 6e994a6..1bfcc3d 100644
--- a/lib/plugin.php
+++ b/lib/plugin.php
@@ -1,134 +1,191 @@
 <?php
-/////////////////////////////////////////////////
 // PukiWiki - Yet another WikiWikiWeb clone.
+// plugin.php
+// Copyright
+//   2002-2021 PukiWiki Development Team
+//   2001-2002 Originally written by yu-ji
+// License: GPL v2 or (at your option) any later version
 //
-// $Id: plugin.php,v 1.2 2004/08/09 13:57:41 henoheno Exp $
-//
+// Plugin related functions
+
+define('PKWK_PLUGIN_CALL_TIME_LIMIT', 768);
 
-// ¥×¥é¥°¥¤¥óÍѤË̤ÄêµÁ¤Î¥°¥í¡¼¥Ð¥ëÊÑ¿ô¤òÀßÄê
+// Set global variables for plugins
 function set_plugin_messages($messages)
 {
-	foreach ($messages as $name=>$val) {
-		if (! isset($GLOBALS[$name])) $GLOBALS[$name] = $val;
-	}
+	foreach ($messages as $name=>$val)
+		if (! isset($GLOBALS[$name]))
+			$GLOBALS[$name] = $val;
 }
 
-//¥×¥é¥°¥¤¥ó¤¬Â¸ºß¤¹¤ë¤«
+// Check plugin '$name' is here
 function exist_plugin($name)
 {
-	$name = strtolower($name);	// Âçʸ»ú¤È¾®Ê¸»ú¤ò¶èÊ̤·¤Ê¤¤¥Õ¥¡¥¤¥ë¥·¥¹¥Æ¥àÂкö
+	global $vars;
+	static $exist = array(), $count = array();
+
+	$name = strtolower($name);
+	if(isset($exist[$name])) {
+		if (++$count[$name] > PKWK_PLUGIN_CALL_TIME_LIMIT)
+			die('Alert: plugin "' . htmlsc($name) .
+			'" was called over ' . PKWK_PLUGIN_CALL_TIME_LIMIT .
+			' times. SPAM or someting?<br />' . "\n" .
+			'<a href="' . get_base_uri() . '?cmd=edit&amp;page='.
+			rawurlencode($vars['page']) . '">Try to edit this page</a><br />' . "\n" .
+			'<a href="' . get_base_uri() . '">Return to frontpage</a>');
+		return $exist[$name];
+	}
+
 	if (preg_match('/^\w{1,64}$/', $name) &&
 	    file_exists(PLUGIN_DIR . $name . '.inc.php')) {
+	    	$exist[$name] = TRUE;
+	    	$count[$name] = 1;
 		require_once(PLUGIN_DIR . $name . '.inc.php');
 		return TRUE;
 	} else {
+	    	$exist[$name] = FALSE;
+	    	$count[$name] = 1;
 		return FALSE;
 	}
 }
 
-//¥×¥é¥°¥¤¥ó´Ø¿ô(action)¤¬Â¸ºß¤¹¤ë¤«
+// Check if plugin API 'action' exists
 function exist_plugin_action($name) {
-	return	function_exists('plugin_' . $name . '_action') ? TRUE : exist_plugin($name) ?
-		function_exists('plugin_' . $name . '_action') : FALSE;
+	if (function_exists('plugin_' . $name . '_action')) {
+		return TRUE;
+	}
+	if (exist_plugin($name)) {
+		return function_exists('plugin_' . $name . '_action');
+	}
+	return FALSE;
 }
 
-//¥×¥é¥°¥¤¥ó´Ø¿ô(convert)¤¬Â¸ºß¤¹¤ë¤«
+// Check if plugin API 'convert' exists
 function exist_plugin_convert($name) {
-	return	function_exists('plugin_' . $name . '_convert') ? TRUE : exist_plugin($name) ?
-		function_exists('plugin_' . $name . '_convert') : FALSE;
+	if (function_exists('plugin_' . $name . '_convert')) {
+		return TRUE;
+	}
+	if (exist_plugin($name)) {
+		return function_exists('plugin_' . $name . '_convert');
+	}
+	return FALSE;
 }
 
-//¥×¥é¥°¥¤¥ó´Ø¿ô(inline)¤¬Â¸ºß¤¹¤ë¤«
+// Check if plugin API 'inline' exists
 function exist_plugin_inline($name) {
-	return	function_exists('plugin_' . $name . '_inline') ? TRUE : exist_plugin($name) ?
-		function_exists('plugin_' . $name . '_inline') : FALSE;
+	if (function_exists('plugin_' . $name . '_inline')) {
+		return TRUE;
+	}
+	if (exist_plugin($name)) {
+		return function_exists('plugin_' . $name . '_inline');
+	}
+	return FALSE;
 }
 
-//¥×¥é¥°¥¤¥ó¤Î½é´ü²½¤ò¼Â¹Ô
+// Call 'init' function for the plugin
+// NOTE: Returning FALSE means "An erorr occurerd"
 function do_plugin_init($name)
 {
-	static $checked = array();
+	static $done = array();
 
-	if (! isset($checked[$name])) {
+	if (! isset($done[$name])) {
 		$func = 'plugin_' . $name . '_init';
-		if (function_exists($func)) {
-			// TRUE or FALSE or NULL (return nothing)
-			$checked[$name] = call_user_func($func);
-		} else {
-			// Not exists
-			$checked[$name] = null;
-		}
+		$done[$name] = (! function_exists($func) || call_user_func($func) !== FALSE);
 	}
-	return $checked[$name];
+
+	return $done[$name];
 }
 
-//¥×¥é¥°¥¤¥ó(action)¤ò¼Â¹Ô
+// Call API 'action' of the plugin
 function do_plugin_action($name)
 {
 	if (! exist_plugin_action($name)) return array();
 
-	if(do_plugin_init($name) === FALSE)
-		die_message("Plugin init failed: $name");
+	if (do_plugin_init($name) === FALSE) {
+		die_message('Plugin init failed: ' . htmlsc($name));
+	}
 
 	$retvar = call_user_func('plugin_' . $name . '_action');
 
-	// ʸ»ú¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¸¡½ÐÍÑ hidden ¥Õ¥£¡¼¥ë¥É¤òÁÞÆþ
-	return preg_replace('/(<form[^>]*>)/',
-		"$1\n" . '<div><input type="hidden" name="encode_hint" value="¤×" /></div>',
-		$retvar);
+	// Insert a hidden field, supports idenrtifying text enconding
+	if (PKWK_ENCODING_HINT != '')
+		$retvar =  preg_replace('/(<form[^>]*>)/', '$1' . "\n" .
+			'<div><input type="hidden" name="encode_hint" value="' .
+			PKWK_ENCODING_HINT . '" /></div>', $retvar);
+
+	return $retvar;
 }
 
-//¥×¥é¥°¥¤¥ó(convert)¤ò¼Â¹Ô
+// Call API 'convert' of the plugin
 function do_plugin_convert($name, $args = '')
 {
 	global $digest;
 
-	if(do_plugin_init($name) === FALSE)
-		die_message("Plugin init failed: $name");
+	if (do_plugin_init($name) === FALSE) {
+		return '[Plugin init failed: ' . htmlsc($name) . ']';
+	}
 
-	if ($args !== '') {
-		$aryargs = csv_explode(',', $args);
+	if (! PKWKEXP_DISABLE_MULTILINE_PLUGIN_HACK) {
+		// Multiline plugin?
+		$pos  = strpos($args, "\r"); // "\r" is just a delimiter
+		if ($pos !== FALSE) {
+			$body = substr($args, $pos + 1);
+			$args = substr($args, 0, $pos);
+		}
+	}
+
+	if ($args === '') {
+		$aryargs = array();                 // #plugin()
 	} else {
-		$aryargs = array();
+		$aryargs = csv_explode(',', $args); // #plugin(A,B,C,D)
+	}
+	if (! PKWKEXP_DISABLE_MULTILINE_PLUGIN_HACK) {
+		if (isset($body)) $aryargs[] = & $body;     // #plugin(){{body}}
 	}
 
-	$_digest = $digest;  // ÂàÈò
+	$_digest = $digest;
 	$retvar  = call_user_func_array('plugin_' . $name . '_convert', $aryargs);
-	$digest  = $_digest; // Éü¸µ
+	$digest  = $_digest; // Revert
 
 	if ($retvar === FALSE) {
-		return htmlspecialchars('#' . $name . ($args ? "($args)" : ''));
+		return htmlsc('#' . $name .
+			($args != '' ? '(' . $args . ')' : ''));
+	} else if (PKWK_ENCODING_HINT != '') {
+		// Insert a hidden field, supports idenrtifying text enconding
+		return preg_replace('/(<form[^>]*>)/', '$1 ' . "\n" .
+			'<div><input type="hidden" name="encode_hint" value="' .
+			PKWK_ENCODING_HINT . '" /></div>', $retvar);
 	} else {
-		// ʸ»ú¥¨¥ó¥³¡¼¥Ç¥£¥ó¥°¸¡½ÐÍÑ hidden ¥Õ¥£¡¼¥ë¥É¤òÁÞÆþ
-		return preg_replace('/(<form[^>]*>)/',
-			"$1\n" . '<div><input type="hidden" name="encode_hint" value="¤×" /></div>',
-			$retvar);
+		return $retvar;
 	}
 }
 
-//¥×¥é¥°¥¤¥ó(inline)¤ò¼Â¹Ô
+// Call API 'inline' of the plugin
 function do_plugin_inline($name, $args, & $body)
 {
 	global $digest;
 
-	if(do_plugin_init($name) === FALSE)
-		die_message("Plugin init failed: $name");
+	if (do_plugin_init($name) === FALSE) {
+		return '[Plugin init failed: ' . htmlsc($name) . ']';
+	}
 
-	if ($args !== '') {
-		$aryargs = csv_explode(',', $args);
-	} else {
+	if ($args === '') {
 		$aryargs = array();
+	} else {
+		$aryargs = csv_explode(',', $args);
 	}
-	$aryargs[] = & $body; // Added reference of $body
 
-	$_digest = $digest;  // ÂàÈò
+	// NOTE: A reference of $body is always the last argument
+	$aryargs[] = & $body; // func_num_args() != 0
+
+	$_digest = $digest;
 	$retvar  = call_user_func_array('plugin_' . $name . '_inline', $aryargs);
-	$digest  = $_digest; // Éü¸µ
+	$digest  = $_digest; // Revert
 
 	if($retvar === FALSE) {
-		return htmlspecialchars("&${name}" . ($args ? "($args)" : '') . ';');
+		// Do nothing
+		return htmlsc('&' . $name . ($args ? '(' . $args . ')' : '') . ';');
 	} else {
 		return $retvar;
 	}
 }
-?>