1 files changed, 68 insertions, 0 deletions
diff --git a/src/libgit2/path.h b/src/libgit2/path.h
new file mode 100644
index 000000000..c4a2c4250
--- /dev/null
+++ b/src/libgit2/path.h
@@ -0,0 +1,68 @@
+/*
+ * Copyright (C) the libgit2 contributors. All rights reserved.
+ *
+ * This file is part of libgit2, distributed under the GNU GPL v2 with
+ * a Linking Exception. For full terms see the included COPYING file.
+ */
+#ifndef INCLUDE_path_h__
+#define INCLUDE_path_h__
+
+#include "common.h"
+
+#include "fs_path.h"
+#include <git2/sys/path.h>
+
+#define GIT_PATH_REJECT_DOT_GIT            (GIT_FS_PATH_REJECT_MAX << 1)
+#define GIT_PATH_REJECT_DOT_GIT_LITERAL    (GIT_FS_PATH_REJECT_MAX << 2)
+#define GIT_PATH_REJECT_DOT_GIT_HFS        (GIT_FS_PATH_REJECT_MAX << 3)
+#define GIT_PATH_REJECT_DOT_GIT_NTFS       (GIT_FS_PATH_REJECT_MAX << 4)
+
+/* Paths that should never be written into the working directory. */
+#define GIT_PATH_REJECT_WORKDIR_DEFAULTS \
+	GIT_FS_PATH_REJECT_FILESYSTEM_DEFAULTS | GIT_PATH_REJECT_DOT_GIT
+
+/* Paths that should never be written to the index. */
+#define GIT_PATH_REJECT_INDEX_DEFAULTS \
+	GIT_FS_PATH_REJECT_TRAVERSAL | GIT_PATH_REJECT_DOT_GIT
+
+extern bool git_path_str_is_valid(
+	git_repository *repo,
+	const git_str *path,
+	uint16_t file_mode,
+	unsigned int flags);
+
+GIT_INLINE(bool) git_path_is_valid(
+	git_repository *repo,
+	const char *path,
+	uint16_t file_mode,
+	unsigned int flags)
+{
+	git_str str = GIT_STR_INIT_CONST(path, SIZE_MAX);
+	return git_path_str_is_valid(repo, &str, file_mode, flags);
+}
+
+GIT_INLINE(int) git_path_validate_str_length(
+	git_repository *repo,
+	const git_str *path)
+{
+	if (!git_path_str_is_valid(repo, path, 0, GIT_FS_PATH_REJECT_LONG_PATHS)) {
+		if (path->size == SIZE_MAX)
+			git_error_set(GIT_ERROR_FILESYSTEM, "path too long: '%s'", path->ptr);
+		else
+			git_error_set(GIT_ERROR_FILESYSTEM, "path too long: '%.*s'", (int)path->size, path->ptr);
+
+		return -1;
+	}
+
+	return 0;
+}
+
+GIT_INLINE(int) git_path_validate_length(
+	git_repository *repo,
+	const char *path)
+{
+	git_str str = GIT_STR_INIT_CONST(path, SIZE_MAX);
+	return git_path_validate_str_length(repo, &str);
+}
+
+#endif