From 87c5b2118efcee65eeda3f743d081ea9c2b866d9 Mon Sep 17 00:00:00 2001
From: Laurent Bercot <ska-skaware@skarnet.org>
Date: Thu, 15 Jan 2015 20:14:44 +0000
Subject:  Move Unix domain utilities and access control utilites, as well as
 the accessrules library, from s6-networking to here

---
 src/libs6/s6_accessrules_keycheck_ip4.c | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 src/libs6/s6_accessrules_keycheck_ip4.c

(limited to 'src/libs6/s6_accessrules_keycheck_ip4.c')

diff --git a/src/libs6/s6_accessrules_keycheck_ip4.c b/src/libs6/s6_accessrules_keycheck_ip4.c
new file mode 100644
index 0000000..66ace93
--- /dev/null
+++ b/src/libs6/s6_accessrules_keycheck_ip4.c
@@ -0,0 +1,24 @@
+/* ISC license. */
+
+#include <skalibs/uint32.h>
+#include <skalibs/uint.h>
+#include <skalibs/fmtscan.h>
+#include <s6/accessrules.h>
+
+s6_accessrules_result_t s6_accessrules_keycheck_ip4 (void const *key, void *data, s6_accessrules_params_t *params, s6_accessrules_backend_func_t_ref check1)
+{
+  char fmt[IP4_FMT + UINT_FMT + 6] = "ip4/" ;
+  uint32 ip ;
+  unsigned int i = 0 ;
+  uint32_unpack_big((char const *)key, &ip) ;
+  for (; i <= 32 ; i++)
+  {
+    register s6_accessrules_result_t r ;
+    register unsigned int len = 4 + ip4_fmtu32(fmt+4, (i == 32) ? 0 : ip & ~((1U << i) - 1)) ;
+    fmt[len++] = '_' ;
+    len += uint_fmt(fmt + len, 32 - i) ;
+    r = (*check1)(fmt, len, data, params) ;
+    if (r != S6_ACCESSRULES_NOTFOUND) return r ;
+  }
+  return S6_ACCESSRULES_NOTFOUND ;
+}
-- 
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