diff --git a/str.c b/str.c
index e78a8c80..7b165d31 100644
--- a/str.c
+++ b/str.c
@@ -131,6 +131,24 @@ int strncase_startswith(const char *str, size_t len, const char *substring, cons
   return 1;
 }
 
+int strn_str_cmp(const char *str1, size_t len1, const char *str2)
+{
+  int r = strncmp(str1, str2, len1);
+  if (r)
+    return r;
+  size_t len2 = strlen(str2);
+  return len1 < len2 ? -1 : len1 > len2 ? 1 : 0;
+}
+
+int strn_str_casecmp(const char *str1, size_t len1, const char *str2)
+{
+  int r = strncasecmp(str1, str2, len1);
+  if (r)
+    return r;
+  size_t len2 = strlen(str2);
+  return len1 < len2 ? -1 : len1 > len2 ? 1 : 0;
+}
+
 int parse_argv(char *cmdline, char delim, char **argv, int max_argv)
 {
   int argc=0;
diff --git a/str.h b/str.h
index 1dafd4f1..06888275 100644
--- a/str.h
+++ b/str.h
@@ -119,6 +119,22 @@ int strcase_startswith(const char *str, const char *substring, const char **afte
  */
 int strncase_startswith(const char *str, size_t len, const char *substring, const char **afterp);
 
+/* Compare the given string 'str1' of a given length 'len1' with a given nul-terminated string
+ * 'str2'.  Equivalent to { str1[len1] = '\0'; return strcmp(str1, str2); } except without modifying
+ * str1[].
+ *
+ * @author Andrew Bettison <andrew@servalproject.com>
+ */
+int strn_str_cmp(const char *str1, size_t len1, const char *str2);
+
+/* Compare case-insenstivively the given string 'str1' of a given length 'len1' with a given
+ * nul-terminated string 'str2'.  Equivalent to { str1[len1] = '\0'; return strcasecmp(str1, str2);
+ * } except without modifying str1[].
+ *
+ * @author Andrew Bettison <andrew@servalproject.com>
+ */
+int strn_str_casecmp(const char *str1, size_t len1, const char *str2);
+
 /* like strstr(3), but doesn't depend on null termination.
  *
  * @author Paul Gardner-Stephen <paul@servalproject.org>