This is needed for the dhcp server implementation.
#include <netpacket/packet.h>
#include <net/ethernet.h>
-#include <net/if_arp.h>
#include <linux/if.h>
#include <linux/filter.h>
server, SERVER_PORT);
}
-static gboolean interface_is_up(int index)
-{
- int sk, err;
- struct ifreq ifr;
- gboolean ret = FALSE;
-
- sk = socket(PF_INET, SOCK_DGRAM, 0);
- if (sk < 0) {
- perror("Open socket error");
- return FALSE;
- }
- memset(&ifr, 0, sizeof(ifr));
- ifr.ifr_ifindex = index;
-
- err = ioctl(sk, SIOCGIFNAME, &ifr);
- if (err < 0) {
- perror("Get interface name error");
- goto done;
- }
-
- err = ioctl(sk, SIOCGIFFLAGS, &ifr);
- if (err < 0) {
- perror("Get interface flags error");
- goto done;
- }
-
- if (ifr.ifr_flags & IFF_UP)
- ret = TRUE;
-
-done:
- close(sk);
-
- return ret;
-}
-
-static char *get_interface_name(int index)
-{
- struct ifreq ifr;
- int sk, err;
-
- if (index < 0)
- return NULL;
-
- sk = socket(PF_INET, SOCK_DGRAM, 0);
- if (sk < 0) {
- perror("Open socket error");
- return NULL;
- }
-
- memset(&ifr, 0, sizeof(ifr));
- ifr.ifr_ifindex = index;
-
- err = ioctl(sk, SIOCGIFNAME, &ifr);
- if (err < 0) {
- perror("Get interface name error");
- close(sk);
- return NULL;
- }
-
- close(sk);
-
- return g_strdup(ifr.ifr_name);
-}
static void get_interface_mac_address(int index, uint8_t *mac_address)
{
#include <config.h>
#endif
+#include <stdio.h>
#include <errno.h>
#include <unistd.h>
+#include <sys/ioctl.h>
#include <stdint.h>
#include <string.h>
#include <endian.h>
+#include <net/if_arp.h>
+#include <linux/if.h>
#include <netpacket/packet.h>
#include <net/ethernet.h>
return fd;
}
+
+char *get_interface_name(int index)
+{
+ struct ifreq ifr;
+ int sk, err;
+
+ if (index < 0)
+ return NULL;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0) {
+ perror("Open socket error");
+ return NULL;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = index;
+
+ err = ioctl(sk, SIOCGIFNAME, &ifr);
+ if (err < 0) {
+ perror("Get interface name error");
+ close(sk);
+ return NULL;
+ }
+
+ close(sk);
+
+ return g_strdup(ifr.ifr_name);
+}
+
+gboolean interface_is_up(int index)
+{
+ int sk, err;
+ struct ifreq ifr;
+ gboolean ret = FALSE;
+
+ sk = socket(PF_INET, SOCK_DGRAM, 0);
+ if (sk < 0) {
+ perror("Open socket error");
+ return FALSE;
+ }
+
+ memset(&ifr, 0, sizeof(ifr));
+ ifr.ifr_ifindex = index;
+
+ err = ioctl(sk, SIOCGIFNAME, &ifr);
+ if (err < 0) {
+ perror("Get interface name error");
+ goto done;
+ }
+
+ err = ioctl(sk, SIOCGIFFLAGS, &ifr);
+ if (err < 0) {
+ perror("Get interface flags error");
+ goto done;
+ }
+
+ if (ifr.ifr_flags & IFF_UP)
+ ret = TRUE;
+
+done:
+ close(sk);
+
+ return ret;
+}
#define EXTEND_FOR_BUGGY_SERVERS 80
-static const uint8_t MAC_BCAST_ADDR[6] __attribute__((aligned(2))) = {
+static const uint8_t MAC_BCAST_ADDR[ETH_ALEN] __attribute__((aligned(2))) = {
0xff, 0xff, 0xff, 0xff, 0xff, 0xff
};
+static const uint8_t MAC_ANY_ADDR[ETH_ALEN] __attribute__((aligned(2))) = {
+ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
+};
+
/* DHCP packet */
#define DHCP_MAGIC 0x63825363
#define DHCP_OPTIONS_BUFSIZE 308
uint32_t dest_ip, int dest_port);
int dhcp_l3_socket(int port, const char *interface);
int dhcp_recv_l3_packet(struct dhcp_packet *packet, int fd);
+char *get_interface_name(int index);
+gboolean interface_is_up(int index);