[Pkg-owncloud-commits] [ocsync] 07/29: Symlink detection for Win32.

[Sandro Knauß]

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hefee-guest pushed a commit to branch master
in repository ocsync.

commit 22608f13ca16c3d2ba26c9b9e4be42605f1dd4dc
Author: Klaas Freitag <freitag at owncloud.com>
Date:   Mon Dec 9 15:19:50 2013 +0100

    Symlink detection for Win32.
    
    This fixes https://github.com/owncloud/mirall/issues/1259
---
 src/std/c_file.c          | 31 +++++++++++++++++++++++++++++++
 src/std/c_file.h          | 14 +++++++++++++-
 src/vio/csync_vio_local.c |  5 +++++
 3 files changed, 49 insertions(+), 1 deletion(-)

diff --git a/src/std/c_file.c b/src/std/c_file.c
index b04c05b..61984b3 100644
--- a/src/std/c_file.c
+++ b/src/std/c_file.c
@@ -37,6 +37,37 @@
 
 #include "c_private.h"
 
+#ifdef _WIN32
+/* check if path is a symlink */
+int c_islink(const char *path) {
+    int re = 0;
+
+    mbchar_t *wpath = 0;
+    DWORD    dwAttrs;
+    WIN32_FIND_DATAW FindFileData;
+    HANDLE hFind;
+
+    wpath = c_utf8_to_locale(path);
+
+    dwAttrs = GetFileAttributesW(wpath);
+    if (dwAttrs != INVALID_FILE_ATTRIBUTES) {
+
+        if ((dwAttrs & FILE_ATTRIBUTE_REPARSE_POINT)) {
+            hFind = FindFirstFileW(wpath, &FindFileData );
+            if (hFind !=  INVALID_HANDLE_VALUE) {
+                if( (FindFileData.dwFileAttributes & FILE_ATTRIBUTE_REPARSE_POINT) &&
+                    (FindFileData.dwReserved0 & IO_REPARSE_TAG_SYMLINK) ) {
+                        re = 1;
+                }
+            }
+            FindClose(hFind);
+        }
+    }
+    c_free_locale_string(wpath);
+    return re;
+}
+#endif
+
 /* check if path is a file */
 int c_isfile(const char *path) {
   csync_stat_t sb;
diff --git a/src/std/c_file.h b/src/std/c_file.h
index 31e5ff9..d952b39 100644
--- a/src/std/c_file.h
+++ b/src/std/c_file.h
@@ -40,12 +40,24 @@
 #define BUFFER_SIZE (16 * 1024)
 #endif
 
+#ifdef _WIN32
+/**
+ * @brief Check if a path is a link.
+ *
+ * @param path  The path to check.
+ *
+ * @return 1 if the path is a symbolic link, 0 if the path doesn't
+ *         exist or is something else.
+ */
+int c_islink(const char *path);
+#endif
+
 /**
  * @brief Check if a path is a regular file or a link.
  *
  * @param path  The path to check.
  *
- * @return 1 if the path is a file, 0 if the path doesn't exist, is a
+ * @return 1 if the path is a file, 0 if the path doesn't exist, is
  *         something else or can't be accessed.
  */
 int c_isfile(const char *path);
diff --git a/src/vio/csync_vio_local.c b/src/vio/csync_vio_local.c
index 4e4e687..facadde 100644
--- a/src/vio/csync_vio_local.c
+++ b/src/vio/csync_vio_local.c
@@ -416,6 +416,11 @@ int csync_vio_local_stat(const char *uri, csync_vio_file_stat_t *buf) {
      }
      CloseHandle(h);
   }
+
+  /* check if it is a symlink on win32 */
+  if (c_islink(uri)) {
+      buf->type = CSYNC_VIO_FILE_TYPE_SYMBOLIC_LINK;
+  }
 #else /* non windows platforms: */
 
   /* Both values are only initialized to zero as they are not used in csync */

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