1 files changed, 109 insertions, 0 deletions
diff --git a/libdnet-stripped/src/eth-snoop.c b/libdnet-stripped/src/eth-snoop.c
new file mode 100644
index 0000000..a0147b8
--- /dev/null
+++ b/libdnet-stripped/src/eth-snoop.c
@@ -0,0 +1,109 @@
+/*
+ * eth-snoop.c
+ *
+ * Copyright (c) 2000 Dug Song <dugsong@monkey.org>
+ *
+ * $Id: eth-snoop.c 548 2005-01-30 06:01:57Z dugsong $
+ */
+
+#include "config.h"
+
+#include <sys/types.h>
+#include <sys/ioctl.h>
+#include <sys/socket.h>
+
+#include <net/if.h>
+#include <net/raw.h>
+
+#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "dnet.h"
+
+struct eth_handle {
+	int		fd;
+	struct ifreq	ifr;
+};
+
+eth_t *
+eth_open(const char *device)
+{
+	struct sockaddr_raw sr;
+	eth_t *e;
+	int n;
+	
+	if ((e = calloc(1, sizeof(*e))) == NULL)
+		return (NULL);
+
+	if ((e->fd = socket(PF_RAW, SOCK_RAW, RAWPROTO_SNOOP)) < 0)
+		return (eth_close(e));
+	
+	memset(&sr, 0, sizeof(sr));
+	sr.sr_family = AF_RAW;
+	strlcpy(sr.sr_ifname, device, sizeof(sr.sr_ifname));
+
+	if (bind(e->fd, (struct sockaddr *)&sr, sizeof(sr)) < 0)
+		return (eth_close(e));
+	
+	n = 60000;
+	if (setsockopt(e->fd, SOL_SOCKET, SO_SNDBUF, &n, sizeof(n)) < 0)
+		return (eth_close(e));
+	
+	strlcpy(e->ifr.ifr_name, device, sizeof(e->ifr.ifr_name));
+	
+	return (e);
+}
+
+int
+eth_get(eth_t *e, eth_addr_t *ea)
+{
+	struct addr ha;
+	
+	if (ioctl(e->fd, SIOCGIFADDR, &e->ifr) < 0)
+		return (-1);
+
+	if (addr_ston(&e->ifr.ifr_addr, &ha) < 0)
+		return (-1);
+
+	if (ha.addr_type != ADDR_TYPE_ETH) {
+		errno = EINVAL;
+		return (-1);
+	}
+	memcpy(ea, &ha.addr_eth, sizeof(*ea));
+	
+	return (0);
+}
+
+int
+eth_set(eth_t *e, const eth_addr_t *ea)
+{
+	struct addr ha;
+
+	ha.addr_type = ADDR_TYPE_ETH;
+	ha.addr_bits = ETH_ADDR_BITS;
+	memcpy(&ha.addr_eth, ea, ETH_ADDR_LEN);
+	    
+	if (addr_ntos(&ha, &e->ifr.ifr_addr) < 0)
+		return (-1);
+	
+	return (ioctl(e->fd, SIOCSIFADDR, &e->ifr));
+}
+
+ssize_t
+eth_send(eth_t *e, const void *buf, size_t len)
+{
+	return (write(e->fd, buf, len));
+}
+
+eth_t *
+eth_close(eth_t *e)
+{
+	if (e != NULL) {
+		if (e->fd >= 0)
+			close(e->fd);
+		free(e);
+	}
+	return (NULL);
+}