Fixed bug #64452 Zip PHPTs crash intermittently

NEWS

@@ -17,6 +17,9 @@ PHP                                                                        NEWS
 - DateTime
   . Fixed bug #62852 (Unserialize Invalid Date causes crash). (Anatol)
 
+- Zip:
+  . Bug #64452 (Zip crash intermittently). (Anatol)
+
 
 14 Mar 2013, PHP 5.3.23
 

ext/zip/lib/zip_close.c

@@ -88,6 +88,9 @@ zip_close(struct zip *za)
     if (za == NULL)
 	return -1;
 
+    if (za->zp == NULL)
+        return -1;
+
     if (!_zip_changed(za, &survivors)) {
 	_zip_free(za);
 	return 0;
@@ -164,9 +167,10 @@ zip_close(struct zip *za)
     for (j=0; j<survivors; j++) {
 	i = filelist[j].idx;
 
+	_zip_dirent_init(&de);
+
 	/* create new local directory entry */
 	if (ZIP_ENTRY_DATA_CHANGED(za->entry+i) || new_torrentzip) {
-	    _zip_dirent_init(&de);
 
 	    if (zip_get_archive_flag(za, ZIP_AFL_TORRENT, 0))
 		_zip_dirent_torrent_normalize(&de);

ext/zip/lib/zip_dirent.c

@@ -157,11 +157,17 @@ _zip_cdir_write(struct zip_cdir *cd, FILE *fp, struct zip_error *error)
 void
 _zip_dirent_finalize(struct zip_dirent *zde)
 {
-    free(zde->filename);
+    if (zde->filename_len > 0) {
+        free(zde->filename);
+    }
     zde->filename = NULL;
-    free(zde->extrafield);
+    if (zde->extrafield_len > 0) {
+        free(zde->extrafield);
+    }
     zde->extrafield = NULL;
-    free(zde->comment);
+    if (zde->comment_len > 0) {
+        free(zde->comment);
+    }
     zde->comment = NULL;
 }