# HG changeset patch
# User mbaesken
# Date 1548345067 -3600
#      Thu Jan 24 16:51:07 2019 +0100
# Node ID 58578e24f1da5cb6b4abfdf2c9ecc38c6b2e4041
# Parent  50355c3d35c06b3402f2e54c1cfbe6c0cdbaa03c
8217093: Support extended-length paths in parse_manifest.c on windows

diff --git a/src/java.base/share/native/libjli/parse_manifest.c b/src/java.base/share/native/libjli/parse_manifest.c
--- a/src/java.base/share/native/libjli/parse_manifest.c
+++ b/src/java.base/share/native/libjli/parse_manifest.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2019, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -362,9 +362,11 @@
     bp = buffer;
 
     if (find_positions(fd, bp, &base_offset, &censtart) == -1) {
+        free(buffer);
         return -1;
     }
     if (JLI_Lseek(fd, censtart, SEEK_SET) < (jlong) 0) {
+        free(buffer);
         return -1;
     }
 
@@ -562,6 +564,12 @@
     return (1);
 }
 
+#ifdef _WIN32
+int open_jarfile(const char* name, int flags);
+#else
+int open_jarfile(const char* name, int flags) { return open(name, flags); }
+#endif
+
 /*
  * Read the manifest from the specified jar file and fill in the manifest_info
  * structure with the information found within.
@@ -583,7 +591,7 @@
     int     rc;
     char    *splashscreen_name = NULL;
 
-    if ((fd = open(jarfile, O_RDONLY
+    if ((fd = open_jarfile(jarfile, O_RDONLY
 #ifdef O_LARGEFILE
         | O_LARGEFILE /* large file mode */
 #endif
@@ -640,7 +648,7 @@
     zentry  entry;
     void    *data = NULL;
 
-    if ((fd = open(jarfile, O_RDONLY
+    if ((fd = open_jarfile(jarfile, O_RDONLY
 #ifdef O_LARGEFILE
         | O_LARGEFILE /* large file mode */
 #endif
@@ -688,7 +696,7 @@
     char    *value;
     int     rc;
 
-    if ((fd = open(jarfile, O_RDONLY
+    if ((fd = open_jarfile(jarfile, O_RDONLY
 #ifdef O_LARGEFILE
         | O_LARGEFILE /* large file mode */
 #endif
diff --git a/src/java.base/windows/native/libjli/parse_manifest_md.c b/src/java.base/windows/native/libjli/parse_manifest_md.c
new file mode 100644
--- /dev/null
+++ b/src/java.base/windows/native/libjli/parse_manifest_md.c
@@ -0,0 +1,82 @@
+/*
+ * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "jni.h"
+#include "jli_util.h"
+
+/* On Windows, if _open fails, retry again with CreateFileW and
+ *  "\\?\" prefix ( extended-length paths) - this allows to open paths with larger file names;
+ * otherwise we run into the MAX_PATH limitation */
+int open_jarfile(const char* name, int flags) {
+    int fd = _open(name, flags);
+    if (fd == -1 && ENOENT == errno) {
+        #define ELP_PREFIX L"\\\\?\\"
+        wchar_t* wname = NULL;
+        wchar_t* wfullname = NULL;
+        wchar_t* wfullname_with_prefix = NULL;
+        size_t wnamelen;
+        size_t wfullnamelen;
+        HANDLE h;
+
+        wnamelen = strlen(name) + 1;
+        wname = (wchar_t*) malloc(wnamelen * sizeof(wchar_t));
+        if (wname == NULL) {
+            goto end;
+        }
+        if (mbstowcs(wname, name, wnamelen - 1) == -1) {
+            goto end;
+        }
+        wname[wnamelen - 1] = L'\0';
+        wfullname = _wfullpath(wfullname, wname, 0);
+        if (wfullname == NULL) {
+            goto end;
+        }
+        
+        wfullnamelen = wcslen(wfullname);
+        wfullname_with_prefix = (wchar_t*) malloc((wcslen(ELP_PREFIX) + wfullnamelen + 1)
+                                 * sizeof(wchar_t));
+        wcscpy(wfullname_with_prefix, ELP_PREFIX);
+        wcscpy(wfullname_with_prefix + wcslen(ELP_PREFIX), wfullname);
+
+        h = CreateFileW(wfullname_with_prefix, GENERIC_READ, FILE_SHARE_READ, NULL,
+                        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
+        if (h == INVALID_HANDLE_VALUE) {
+            goto end;
+        }
+        /* associates fd with handle */
+        fd = _open_osfhandle((intptr_t)h, _O_RDONLY);
+end:
+        free(wname);
+        free(wfullname);
+        free(wfullname_with_prefix);
+    }
+    return fd;
+}