+const char *
+strtok_len_c (const char *s, const char *delim, size_t *len)
+{
+ /* strtok_len is already const-safe, but we can't express both
+ * versions in the C type system. */
+ return strtok_len ((char*)s, delim, len);
+}
+
+char *
+sanitize_string (const void *ctx, const char *str)
+{
+ char *out, *loop;
+
+ if (! str)
+ return NULL;
+
+ out = talloc_strdup (ctx, str);
+ if (! out)
+ return NULL;
+
+ for (loop = out; *loop; loop++) {
+ if (*loop == '\t' || *loop == '\n')
+ *loop = ' ';
+ else if ((unsigned char)(*loop) < 32)
+ *loop = '?';
+ }
+
+ return out;
+}
+