split address code into separate file

darcs-hash:20070123112239-c9803-4ee436dea71845eb5e857dab3d98a2180149e304.gz

1 files changed, 117 insertions, 0 deletions

diff --git a/agent/address.c b/agent/address.c
new file mode 100644
index 0000000..bf2c861
--- /dev/null
+++ b/agent/address.c
@@ -0,0 +1,117 @@
+
+#include <arpa/inet.h>
+
+#include <glib.h>
+
+#include "address.h"
+
+
+Address *
+address_new (void)
+{
+  return g_slice_new0 (Address);
+}
+
+
+void
+address_set_ipv4 (Address *addr, guint32 addr_ipv4)
+{
+  addr->type = ADDRESS_TYPE_IPV4;
+  addr->addr_ipv4 = addr_ipv4;
+}
+
+
+/**
+ * address_set_ipv4_from_string ()
+ *
+ * Returns FALSE on error.
+ */
+gboolean
+address_set_ipv4_from_string (Address *addr, gchar *str)
+{
+  struct in_addr iaddr;
+
+  if (inet_aton (str, &iaddr) != 0)
+    {
+      address_set_ipv4 (addr, ntohl (iaddr.s_addr));
+      return TRUE;
+    }
+  else
+    {
+      /* invalid address */
+      return FALSE;
+    }
+}
+
+
+gchar *
+address_to_string (Address *addr)
+{
+  struct in_addr iaddr;
+  gchar ip_str[INET_ADDRSTRLEN];
+  const gchar *ret;
+
+  g_assert (addr->type == ADDRESS_TYPE_IPV4);
+  iaddr.s_addr = htonl (addr->addr_ipv4);
+  ret = inet_ntop (AF_INET, &iaddr, ip_str, INET_ADDRSTRLEN);
+  g_assert (ret);
+  return g_strdup (ip_str);
+}
+
+
+gboolean
+address_equal (Address *a, Address *b)
+{
+  if (a->type != b->type)
+    return FALSE;
+
+  if (a->type == ADDRESS_TYPE_IPV4)
+    return a->addr_ipv4 == b->addr_ipv4;
+
+  g_assert_not_reached ();
+}
+
+
+Address *
+address_dup (Address *a)
+{
+  Address *dup = g_slice_new0 (Address);
+
+  *dup = *a;
+  return dup;
+}
+
+
+void
+address_free (Address *addr)
+{
+  g_slice_free (Address, addr);
+}
+
+
+/* "private" in the sense of "not routable on the Internet" */
+static gboolean
+ipv4_address_is_private (guint32 addr)
+{
+  /* http://tools.ietf.org/html/rfc3330 */
+  return (
+      /* 10.0.0.0/8 */
+      ((addr & 0xff000000) == 0x0a000000) ||
+      /* 172.16.0.0/12 */
+      ((addr & 0xfff00000) == 0xac100000) ||
+      /* 192.168.0.0/16 */
+      ((addr & 0xffff0000) == 0xc0a80000) ||
+      /* 127.0.0.0/8 */
+      ((addr & 0xff000000) == 0x7f000000));
+}
+
+
+gboolean
+address_is_private (Address *a)
+{
+  if (a->type == ADDRESS_TYPE_IPV4)
+    return ipv4_address_is_private (a->addr_ipv4);
+
+  g_assert_not_reached ();
+}
+