1 files changed, 0 insertions, 207 deletions
diff --git a/networking/udhcp/packet.c b/networking/udhcp/packet.c
deleted file mode 100644
index 32fb8a7..0000000
--- a/networking/udhcp/packet.c
+++ /dev/null
@@ -1,207 +0,0 @@
-#include <unistd.h>
-#include <string.h>
-#include <netinet/in.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <features.h>
-#if __GLIBC__ >=2 && __GLIBC_MINOR >= 1
-#include <netpacket/packet.h>
-#include <net/ethernet.h>
-#else
-#include <asm/types.h>
-#include <linux/if_packet.h>
-#include <linux/if_ether.h>
-#endif
-#include <errno.h>
-
-#include "packet.h"
-#include "dhcpd.h"
-#include "options.h"
-#include "common.h"
-
-
-void init_header(struct dhcpMessage *packet, char type)
-{
-	memset(packet, 0, sizeof(struct dhcpMessage));
-	switch (type) {
-	case DHCPDISCOVER:
-	case DHCPREQUEST:
-	case DHCPRELEASE:
-	case DHCPINFORM:
-		packet->op = BOOTREQUEST;
-		break;
-	case DHCPOFFER:
-	case DHCPACK:
-	case DHCPNAK:
-		packet->op = BOOTREPLY;
-	}
-	packet->htype = ETH_10MB;
-	packet->hlen = ETH_10MB_LEN;
-	packet->cookie = htonl(DHCP_MAGIC);
-	packet->options[0] = DHCP_END;
-	add_simple_option(packet->options, DHCP_MESSAGE_TYPE, type);
-}
-
-
-/* read a packet from socket fd, return -1 on read error, -2 on packet error */
-int get_packet(struct dhcpMessage *packet, int fd)
-{
-	static const char broken_vendors[][8] = {
-		"MSFT 98",
-		""
-	};
-	int bytes;
-	int i;
-	char unsigned *vendor;
-
-	memset(packet, 0, sizeof(struct dhcpMessage));
-	bytes = read(fd, packet, sizeof(struct dhcpMessage));
-	if (bytes < 0) {
-		DEBUG(LOG_INFO, "couldn't read on listening socket, ignoring");
-		return -1;
-	}
-
-	if (ntohl(packet->cookie) != DHCP_MAGIC) {
-		LOG(LOG_ERR, "received bogus message, ignoring");
-		return -2;
-	}
-	DEBUG(LOG_INFO, "Received a packet");
-
-	if (packet->op == BOOTREQUEST && (vendor = get_option(packet, DHCP_VENDOR))) {
-		for (i = 0; broken_vendors[i][0]; i++) {
-			if (vendor[OPT_LEN - 2] == (uint8_t) strlen(broken_vendors[i]) &&
-			    !strncmp((char*)vendor, broken_vendors[i], vendor[OPT_LEN - 2])) {
-				DEBUG(LOG_INFO, "broken client (%s), forcing broadcast",
-					broken_vendors[i]);
-				packet->flags |= htons(BROADCAST_FLAG);
-			}
-		}
-	}
-
-	return bytes;
-}
-
-
-uint16_t checksum(void *addr, int count)
-{
-	/* Compute Internet Checksum for "count" bytes
-	 *         beginning at location "addr".
-	 */
-	register int32_t sum = 0;
-	uint16_t *source = (uint16_t *) addr;
-
-	while (count > 1)  {
-		/*  This is the inner loop */
-		sum += *source++;
-		count -= 2;
-	}
-
-	/*  Add left-over byte, if any */
-	if (count > 0) {
-		/* Make sure that the left-over byte is added correctly both
-		 * with little and big endian hosts */
-		uint16_t tmp = 0;
-		*(uint8_t *) (&tmp) = * (uint8_t *) source;
-		sum += tmp;
-	}
-	/*  Fold 32-bit sum to 16 bits */
-	while (sum >> 16)
-		sum = (sum & 0xffff) + (sum >> 16);
-
-	return ~sum;
-}
-
-
-/* Construct a ip/udp header for a packet, and specify the source and dest hardware address */
-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 fd;
-	int result;
-	struct sockaddr_ll dest;
-	struct udp_dhcp_packet packet;
-
-	if ((fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP))) < 0) {
-		DEBUG(LOG_ERR, "socket call failed: %m");
-		return -1;
-	}
-
-	memset(&dest, 0, sizeof(dest));
-	memset(&packet, 0, sizeof(packet));
-
-	dest.sll_family = AF_PACKET;
-	dest.sll_protocol = htons(ETH_P_IP);
-	dest.sll_ifindex = ifindex;
-	dest.sll_halen = 6;
-	memcpy(dest.sll_addr, dest_arp, 6);
-	if (bind(fd, (struct sockaddr *)&dest, sizeof(struct sockaddr_ll)) < 0) {
-		DEBUG(LOG_ERR, "bind call failed: %m");
-		close(fd);
-		return -1;
-	}
-
-	packet.ip.protocol = IPPROTO_UDP;
-	packet.ip.saddr = source_ip;
-	packet.ip.daddr = dest_ip;
-	packet.udp.source = htons(source_port);
-	packet.udp.dest = htons(dest_port);
-	packet.udp.len = htons(sizeof(packet.udp) + sizeof(struct dhcpMessage)); /* cheat on the psuedo-header */
-	packet.ip.tot_len = packet.udp.len;
-	memcpy(&(packet.data), payload, sizeof(struct dhcpMessage));
-	packet.udp.check = checksum(&packet, sizeof(struct udp_dhcp_packet));
-
-	packet.ip.tot_len = htons(sizeof(struct udp_dhcp_packet));
-	packet.ip.ihl = sizeof(packet.ip) >> 2;
-	packet.ip.version = IPVERSION;
-	packet.ip.ttl = IPDEFTTL;
-	packet.ip.check = checksum(&(packet.ip), sizeof(packet.ip));
-
-	result = sendto(fd, &packet, sizeof(struct udp_dhcp_packet), 0, (struct sockaddr *) &dest, sizeof(dest));
-	if (result <= 0) {
-		DEBUG(LOG_ERR, "write on socket failed: %m");
-	}
-	close(fd);
-	return result;
-}
-
-
-/* Let the kernel do all the work for packet generation */
-int kernel_packet(struct dhcpMessage *payload, uint32_t source_ip, int source_port,
-		   uint32_t dest_ip, int dest_port)
-{
-	int n = 1;
-	int fd, result;
-	struct sockaddr_in client;
-
-	if ((fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP)) < 0)
-		return -1;
-
-	if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (char *) &n, sizeof(n)) == -1) {
-		close(fd);
-		return -1;
-	}
-
-	memset(&client, 0, sizeof(client));
-	client.sin_family = AF_INET;
-	client.sin_port = htons(source_port);
-	client.sin_addr.s_addr = source_ip;
-
-	if (bind(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) {
-		close(fd);
-		return -1;
-	}
-
-	memset(&client, 0, sizeof(client));
-	client.sin_family = AF_INET;
-	client.sin_port = htons(dest_port);
-	client.sin_addr.s_addr = dest_ip;
-
-	if (connect(fd, (struct sockaddr *)&client, sizeof(struct sockaddr)) == -1) {
-		close(fd);
-		return -1;
-	}
-
-	result = write(fd, payload, sizeof(struct dhcpMessage));
-	close(fd);
-	return result;
-}