* Build udhcpc binary from source.

[grml-terminalserver.git] / udhcp / packet.h

diff --git a/udhcp/packet.h b/udhcp/packet.h
new file mode 100644 (file)
index 0000000..f5859e8
--- /dev/null
+++ b/udhcp/packet.h
@@ -0,0 +1,41 @@
+#ifndef _PACKET_H
+#define _PACKET_H
+
+#include <netinet/udp.h>
+#include <netinet/ip.h>
+
+struct dhcpMessage {
+       uint8_t op;
+       uint8_t htype;
+       uint8_t hlen;
+       uint8_t hops;
+       uint32_t xid;
+       uint16_t secs;
+       uint16_t flags;
+       uint32_t ciaddr;
+       uint32_t yiaddr;
+       uint32_t siaddr;
+       uint32_t giaddr;
+       uint8_t chaddr[16];
+       uint8_t sname[64];
+       uint8_t file[128];
+       uint32_t cookie;
+       uint8_t options[308]; /* 312 - cookie */
+};
+
+struct udp_dhcp_packet {
+       struct iphdr ip;
+       struct udphdr udp;
+       struct dhcpMessage data;
+};
+
+void init_header(struct dhcpMessage *packet, char type);
+int get_packet(struct dhcpMessage *packet, int fd);
+uint16_t checksum(void *addr, int count);
+int raw_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
+                  uint32_t dest_ip, int dest_port, uint8_t *dest_arp, int ifindex);
+int kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
+                  uint32_t dest_ip, int dest_port);
+
+
+#endif