Implemented ip_pton()

2 files changed, 29 insertions, 0 deletions

diff --git a/lib/ip.h b/lib/ip.h
index 2e9c8a5d..1bce89f8 100644
--- a/lib/ip.h
+++ b/lib/ip.h
@@ -49,5 +49,6 @@
 
 char *ip_ntop(ip_addr a, char *);
 char *ip_ntox(ip_addr a, char *);
+int ip_pton(char *a, ip_addr *o);
 
 #endif
diff --git a/lib/ipv4.c b/lib/ipv4.c
index 5ec2ffb8..54e1adb3 100644
--- a/lib/ipv4.c
+++ b/lib/ipv4.c
@@ -8,6 +8,9 @@
 
 #ifndef IPV6
 
+#include <string.h>
+#include <stdlib.h>
+
 #include "nest/bird.h"
 #include "lib/ip.h"
 #include "lib/string.h"
@@ -65,4 +68,29 @@ ipv4_class_mask(u32 a)
 	return m;
 }
 
+int
+ip_pton(char *a, ip_addr *o)
+{
+  int i,j;
+  unsigned long int l;
+  u32 ia = 0;
+
+  i=4;
+  while (i--)
+    {
+      char *d, *c = strchr(a, '.');
+      if (!c != !i)
+	return 0;
+      if (c)
+	*c++ = 0;
+      l = strtoul(a, &d, 10);
+      if (d && *d || l > 255)
+	return 0;
+      ia = (ia << 8) | l;
+      a = c;
+    }
+  *o = ipa_from_u32(ia);
+  return 1;
+}
+
 #endif