From 58153dfed0ead589cb7f69fd0a53058a1f76c375 Mon Sep 17 00:00:00 2001
From: Zeev Suraski <zeev@php.net>
Date: Fri, 26 Nov 1999 23:45:22 +0000
Subject: [PATCH] - Improve the file handle closing code

---
 Zend/zend-scanner.l | 48 ++++++++++++++++++++++++++++++++++-----------
 Zend/zend_compile.c |  2 +-
 Zend/zend_compile.h | 11 ++++++-----
 3 files changed, 44 insertions(+), 17 deletions(-)

diff --git a/Zend/zend-scanner.l b/Zend/zend-scanner.l
index 9cbe91ecae..b8ed223936 100644
--- a/Zend/zend-scanner.l
+++ b/Zend/zend-scanner.l
@@ -183,23 +183,47 @@ inline void restore_lexical_state(zend_lex_state *lex_state CLS_DC)
 BEGIN_EXTERN_C()
 
 
-ZEND_API void zend_open_file_dtor(void *f)
+ZEND_API void zend_open_file_dtor(zend_file_handle *fh)
 {
+	switch (fh->type) {
+		case ZEND_HANDLE_FP:
+			fclose(fh->handle.fp);
+			break;
 #ifdef ZTS
-	delete *((ifstream **) f);
-#else
-	fclose(*((FILE **) f));
+		case ZEND_HANDLE_FSTREAM:
+			delete ((ifstream *) fh->handle.is);
+			break;
+		case ZEND_HANDLE_STDIOSTREAM:
+			delete ((istdiostream *) fh->handle.is);
+			break;
 #endif
+	}
 }
 
 
-ZEND_API void zend_close_file_handle(zend_file_handle *file_handle CLS_DC)
+int zend_compare_file_handles(zend_file_handle *fh1, zend_file_handle *fh2)
 {
+	if (fh1->type != fh2->type) {
+		return 0;
+	}
+	switch (fh1->type) {
+		case ZEND_HANDLE_FP:
+			return fh1->handle.fp==fh2->handle.fp;
+			break;
 #ifdef ZTS
-	zend_llist_del_element(&CG(open_files), &file_handle->handle.is);
-#else
-	zend_llist_del_element(&CG(open_files), &file_handle->handle.fp);
+		case ZEND_HANDLE_FSTREAM:
+		case ZEND_HANDLE_STDIOSTREAM:
+			return fh1->handle.is==fh2->handle.is;
+			break;
+	}
 #endif
+	return 0;
+}
+
+
+ZEND_API void zend_close_file_handle(zend_file_handle *file_handle CLS_DC)
+{
+	zend_llist_del_element(&CG(open_files), file_handle, (int (*)(void *, void *)) zend_compare_file_handles);
 }
 
 
@@ -221,7 +245,7 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC)
 		return FAILURE;
 	}
 	if (file_handle->handle.fp != stdin) {
-		zend_llist_add_element(&CG(open_files), &file_handle->handle.fp);
+		zend_llist_add_element(&CG(open_files), file_handle);
 	}
 	file_handle->type = ZEND_HANDLE_FP;	
 	/* Reset the scanner for scanning the new file */
@@ -232,6 +256,7 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC)
 	switch (file_handle->type) {
 		case ZEND_HANDLE_FD:
 			file_handle->handle.is = new ifstream(file_handle->handle.fd);
+			file_handle->type = ZEND_HANDLE_FSTREAM;
 			break;
 		case ZEND_HANDLE_FILENAME:
 			{
@@ -240,6 +265,7 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC)
 					return FAILURE;
 				}
 				file_handle->handle.is = new istdiostream(file_handle->handle.fp);
+				file_handle->type = ZEND_HANDLE_STDIOSTREAM;
 				break;
 			}
 		case ZEND_HANDLE_FP:
@@ -250,6 +276,7 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC)
 					return FAILURE;
 				}
 				file_handle->handle.is = new istdiostream(file_handle->handle.fp);
+				file_handle->type = ZEND_HANDLE_STDIOSTREAM;
 			}	
 			break;
 	}
@@ -258,9 +285,8 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC)
 		return FAILURE;
 	}
 	if (file_handle->handle.is != &cin) {
-		zend_llist_add_element(&CG(open_files), &file_handle->handle.is);
+		zend_llist_add_element(&CG(open_files), file_handle);
 	}
-	file_handle->type = ZEND_HANDLE_ISTREAM;
 
 	CG(ZFL) = new ZendFlexLexer;
 	CG(ZFL)->switch_streams(file_handle->handle.is, &cout);
diff --git a/Zend/zend_compile.c b/Zend/zend_compile.c
index f33593619e..59cc8d402b 100644
--- a/Zend/zend_compile.c
+++ b/Zend/zend_compile.c
@@ -94,7 +94,7 @@ void init_compiler(CLS_D ELS_DC)
 	zend_hash_apply(&module_registry, (int (*)(void *)) module_registry_request_startup);
 	init_resource_list(ELS_C);
 	CG(unclean_shutdown) = 0;
-	zend_llist_init(&CG(open_files), sizeof(void *), zend_open_file_dtor, 0);
+	zend_llist_init(&CG(open_files), sizeof(zend_file_handle), zend_open_file_dtor, 0);
 }
 
 
diff --git a/Zend/zend_compile.h b/Zend/zend_compile.h
index f9b11e5525..1d96cf9559 100644
--- a/Zend/zend_compile.h
+++ b/Zend/zend_compile.h
@@ -354,7 +354,7 @@ ZEND_API int open_file_for_scanning(zend_file_handle *file_handle CLS_DC);
 ZEND_API void init_op_array(zend_op_array *op_array, int initial_ops_size);
 ZEND_API void destroy_op_array(zend_op_array *op_array);
 ZEND_API void zend_close_file_handle(zend_file_handle *file_handle CLS_DC);
-ZEND_API void zend_open_file_dtor(void *f);
+ZEND_API void zend_open_file_dtor(zend_file_handle *fh);
 END_EXTERN_C()
 
 ZEND_API int destroy_zend_function(zend_function *function);
@@ -543,10 +543,11 @@ int zendlex(znode *zendlval CLS_DC);
 #define ZEND_RT (1<<1)
 
 
-#define ZEND_HANDLE_FILENAME	0
-#define ZEND_HANDLE_FD			1
-#define ZEND_HANDLE_FP			2
-#define ZEND_HANDLE_ISTREAM		3
+#define ZEND_HANDLE_FILENAME		0
+#define ZEND_HANDLE_FD				1
+#define ZEND_HANDLE_FP				2
+#define ZEND_HANDLE_STDIOSTREAM		3
+#define ZEND_HANDLE_FSTREAM			4
 
 #define ZEND_DECLARE_CLASS				1
 #define ZEND_DECLARE_FUNCTION			2
-- 
2.40.0