1 files changed, 29 insertions, 0 deletions
diff --git a/src/tipideed/util.c b/src/tipideed/util.c
new file mode 100644
index 0000000..2891306
--- /dev/null
+++ b/src/tipideed/util.c
@@ -0,0 +1,29 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <string.h>
+
+#include <skalibs/stralloc.h>
+#include <skalibs/djbunix.h>
+
+#include "tipideed-internal.h"
+
+size_t translate_path (char const *path)
+{
+  size_t n = g.sa.len ;
+  if (g.flagnoxlate)
+  {
+    if (!stralloc_readyplus(&g.sa, strlen(path) + 2)) return 0 ;
+    path_canonicalize(g.sa.s + n, path, 0) ;
+    return n ;
+  }
+  if (sarealpath(&g.sa, path) == -1 || !stralloc_0(&g.sa))
+  {
+    g.sa.len = n ;
+    return 0 ;
+  }
+  g.sa.len = n ;
+  if (strncmp(g.sa.s + n, g.sa.s, g.cwdlen) || g.sa.s[n + g.cwdlen] != '/')
+    return (errno = EPERM, 0) ;
+  return n + g.cwdlen + 1 ;
+}