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-rw-r--r--src/vlib/unix/util.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/vlib/unix/util.c b/src/vlib/unix/util.c
index 93aeb99c5d9..312cc9b5a0a 100644
--- a/src/vlib/unix/util.c
+++ b/src/vlib/unix/util.c
@@ -257,6 +257,55 @@ done:
return error;
}
+clib_error_t *
+vlib_unix_validate_runtime_file (unix_main_t * um,
+ const char *path, u8 ** full_path)
+{
+ u8 *fp = 0;
+ char *last_slash = 0;
+
+ if (path[0] == '\0')
+ {
+ return clib_error_return (0, "path is an empty string");
+ }
+ else if (strncmp (path, "../", 3) == 0 || strstr (path, "/../"))
+ {
+ return clib_error_return (0, "'..' not allowed in runtime path");
+ }
+ else if (path[0] == '/')
+ {
+ /* Absolute path. Has to start with runtime directory */
+ if (strncmp ((char *) um->runtime_dir, path,
+ strlen ((char *) um->runtime_dir)))
+ {
+ return clib_error_return (0,
+ "file %s is not in runtime directory %s",
+ path, um->runtime_dir);
+ }
+ fp = format (0, "%s%c", path, '\0');
+ }
+ else
+ {
+ /* Relative path, just append to runtime */
+ fp = format (0, "%s/%s%c", um->runtime_dir, path, '\0');
+ }
+
+ /* We don't want to create a directory out of the last file */
+ if ((last_slash = strrchr ((char *) fp, '/')) != NULL)
+ *last_slash = '\0';
+
+ clib_error_t *error = vlib_unix_recursive_mkdir ((char *) fp);
+
+ if (last_slash != NULL)
+ *last_slash = '/';
+
+ if (error)
+ vec_free (fp);
+
+ *full_path = fp;
+ return error;
+}
+
/*
* fd.io coding-style-patch-verification: ON
*