1 files changed, 104 insertions, 0 deletions
diff --git a/libdnet-stripped/src/ip.c b/libdnet-stripped/src/ip.c
new file mode 100644
index 0000000..6b513ce
--- /dev/null
+++ b/libdnet-stripped/src/ip.c
@@ -0,0 +1,104 @@
+/*
+ * ip.c
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * $Id: ip.c 547 2005-01-25 21:30:40Z dugsong $
+ */
+
+#include "config.h"
+
+#include <netinet/in.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include "dnet.h"
+
+struct ip_handle {
+	int	fd;
+};
+
+ip_t *
+ip_open(void)
+{
+	ip_t *i;
+	int n;
+	socklen_t len;
+
+	if ((i = calloc(1, sizeof(*i))) == NULL)
+		return (NULL);
+
+	if ((i->fd = socket(AF_INET, SOCK_RAW, IPPROTO_RAW)) < 0)
+		return (ip_close(i));
+#ifdef IP_HDRINCL
+	n = 1;
+	if (setsockopt(i->fd, IPPROTO_IP, IP_HDRINCL, &n, sizeof(n)) < 0)
+		return (ip_close(i));
+#endif
+#ifdef SO_SNDBUF
+	len = sizeof(n);
+	if (getsockopt(i->fd, SOL_SOCKET, SO_SNDBUF, &n, &len) < 0)
+		return (ip_close(i));
+
+	for (n += 128; n < 1048576; n += 128) {
+		if (setsockopt(i->fd, SOL_SOCKET, SO_SNDBUF, &n, len) < 0) {
+			if (errno == ENOBUFS)
+				break;
+			return (ip_close(i));
+		}
+	}
+#endif
+#ifdef SO_BROADCAST
+	n = 1;
+	if (setsockopt(i->fd, SOL_SOCKET, SO_BROADCAST, &n, sizeof(n)) < 0)
+		return (ip_close(i));
+#endif
+	return (i);
+}
+
+ssize_t
+ip_send(ip_t *i, const void *buf, size_t len)
+{
+	struct ip_hdr *ip;
+	struct sockaddr_in sin;
+
+	ip = (struct ip_hdr *)buf;
+
+	memset(&sin, 0, sizeof(sin));
+#ifdef HAVE_SOCKADDR_SA_LEN       
+	sin.sin_len = sizeof(sin);
+#endif
+	sin.sin_family = AF_INET;
+	sin.sin_addr.s_addr = ip->ip_dst;
+	
+#ifdef HAVE_RAWIP_HOST_OFFLEN
+	ip->ip_len = ntohs(ip->ip_len);
+	ip->ip_off = ntohs(ip->ip_off);
+
+	len = sendto(i->fd, buf, len, 0,
+	    (struct sockaddr *)&sin, sizeof(sin));
+	
+	ip->ip_len = htons(ip->ip_len);
+	ip->ip_off = htons(ip->ip_off);
+
+	return (len);
+#else
+	return (sendto(i->fd, buf, len, 0,
+	    (struct sockaddr *)&sin, sizeof(sin)));
+#endif
+}
+
+ip_t *
+ip_close(ip_t *i)
+{
+	if (i != NULL) {
+		if (i->fd >= 0)
+			close(i->fd);
+		free(i);
+	}
+	return (NULL);
+}