From 0e5b2871ca6456b01d4bf037a6e68badf1ff1a41 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Henryk=20Pl=C3=B6tz?= <henryk@ploetzli.ch>
Date: Fri, 3 Oct 2014 19:58:52 +0200
Subject: Initial commit of djbdns-1.05.tar.gz Source was
 http://cr.yp.to/djbdns/djbdns-1.05.tar.gz, SHA1
 2efdb3a039d0c548f40936aa9cb30829e0ce8c3d

---
 dd.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 dd.c

(limited to 'dd.c')

diff --git a/dd.c b/dd.c
new file mode 100644
index 0000000..778cbdc
--- /dev/null
+++ b/dd.c
@@ -0,0 +1,36 @@
+#include "dns.h"
+#include "dd.h"
+
+int dd(const char *q,const char *base,char ip[4])
+{
+  int j;
+  unsigned int x;
+
+  for (j = 0;;++j) {
+    if (dns_domain_equal(q,base)) return j;
+    if (j >= 4) return -1;
+
+    if (*q <= 0) return -1;
+    if (*q >= 4) return -1;
+    if ((q[1] < '0') || (q[1] > '9')) return -1;
+    x = q[1] - '0';
+    if (*q == 1) {
+      ip[j] = x;
+      q += 2;
+      continue;
+    }
+    if (!x) return -1;
+    if ((q[2] < '0') || (q[2] > '9')) return -1;
+    x = x * 10 + (q[2] - '0');
+    if (*q == 2) {
+      ip[j] = x;
+      q += 3;
+      continue;
+    }
+    if ((q[3] < '0') || (q[3] > '9')) return -1;
+    x = x * 10 + (q[3] - '0');
+    if (x > 255) return -1;
+    ip[j] = x;
+    q += 4;
+  }
+}
-- 
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