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udhcp: shorten mac len from 16 to 6 in lease file

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-06-17 11:57:09 +02:00
parent ac906fa85e
commit 31af3d5a1d
15 changed files with 126 additions and 103 deletions
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20
networking/udhcp/clientpacket.c
View File

@ -38,7 +38,7 @@ uint32_t FAST_FUNC random_xid(void)
/* Initialize the packet with the proper defaults */
static void init_packet(struct dhcpMessage *packet, char type)
static void init_packet(struct dhcp_packet *packet, char type)
{
udhcp_init_header(packet, type);
memcpy(packet->chaddr, client_config.client_mac, 6);
@ -56,7 +56,7 @@ static void init_packet(struct dhcpMessage *packet, char type)
/* Add a parameter request list for stubborn DHCP servers. Pull the data
* from the struct in options.c. Don't do bounds checking here because it
* goes towards the head of the packet. */
static void add_param_req_option(struct dhcpMessage *packet)
static void add_param_req_option(struct dhcp_packet *packet)
{
uint8_t c;
int end = end_option(packet->options);
@ -96,7 +96,7 @@ static void add_param_req_option(struct dhcpMessage *packet)
* client reverts to using the IP broadcast address.
*/
static int raw_bcast_from_client_config_ifindex(struct dhcpMessage *packet)
static int raw_bcast_from_client_config_ifindex(struct dhcp_packet *packet)
{
return udhcp_send_raw_packet(packet,
/*src*/ INADDR_ANY, CLIENT_PORT,
@ -109,7 +109,7 @@ static int raw_bcast_from_client_config_ifindex(struct dhcpMessage *packet)
/* Broadcast a DHCP decline message */
int FAST_FUNC send_decline(uint32_t xid, uint32_t server, uint32_t requested)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
init_packet(&packet, DHCPDECLINE);
packet.xid = xid;
@ -126,7 +126,7 @@ int FAST_FUNC send_decline(uint32_t xid, uint32_t server, uint32_t requested)
/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
int FAST_FUNC send_discover(uint32_t xid, uint32_t requested)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
init_packet(&packet, DHCPDISCOVER);
packet.xid = xid;
@ -150,7 +150,7 @@ int FAST_FUNC send_discover(uint32_t xid, uint32_t requested)
*/
int FAST_FUNC send_select(uint32_t xid, uint32_t server, uint32_t requested)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
struct in_addr addr;
init_packet(&packet, DHCPREQUEST);
@ -169,7 +169,7 @@ int FAST_FUNC send_select(uint32_t xid, uint32_t server, uint32_t requested)
/* Unicasts or broadcasts a DHCP renew message */
int FAST_FUNC send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
init_packet(&packet, DHCPREQUEST);
packet.xid = xid;
@ -189,7 +189,7 @@ int FAST_FUNC send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr)
/* Unicasts a DHCP release message */
int FAST_FUNC send_release(uint32_t server, uint32_t ciaddr)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
init_packet(&packet, DHCPRELEASE);
packet.xid = random_xid();
@ -203,10 +203,10 @@ int FAST_FUNC send_release(uint32_t server, uint32_t ciaddr)
/* Returns -1 on errors that are fatal for the socket, -2 for those that aren't */
int FAST_FUNC udhcp_recv_raw_packet(struct dhcpMessage *dhcp_pkt, int fd)
int FAST_FUNC udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd)
{
int bytes;
struct udp_dhcp_packet packet;
struct ip_udp_dhcp_packet packet;
uint16_t check;
memset(&packet, 0, sizeof(packet));

35
networking/udhcp/common.h
View File

@ -23,8 +23,8 @@ extern const uint8_t MAC_BCAST_ADDR[6]; /* six all-ones */
#define DHCP_OPTIONS_BUFSIZE 308
//TODO: rename to dhcp_packet; rename ciaddr/yiaddr/chaddr
struct dhcpMessage {
//TODO: rename ciaddr/yiaddr/chaddr
struct dhcp_packet {
uint8_t op; /* 1 = BOOTREQUEST, 2 = BOOTREPLY */
uint8_t htype; /* hardware address type. 1 = 10mb ethernet */
uint8_t hlen; /* hardware address length */
@ -45,39 +45,38 @@ struct dhcpMessage {
uint8_t options[DHCP_OPTIONS_BUFSIZE + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS];
} PACKED;
//TODO: rename to ip_udp_dhcp_packet?
struct udp_dhcp_packet {
struct ip_udp_dhcp_packet {
struct iphdr ip;
struct udphdr udp;
struct dhcpMessage data;
struct dhcp_packet data;
} PACKED;
/* Let's see whether compiler understood us right */
struct BUG_bad_sizeof_struct_udp_dhcp_packet {
char BUG_bad_sizeof_struct_udp_dhcp_packet
[(sizeof(struct udp_dhcp_packet) != 576 + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS) ? -1 : 1];
struct BUG_bad_sizeof_struct_ip_udp_dhcp_packet {
char BUG_bad_sizeof_struct_ip_udp_dhcp_packet
[(sizeof(struct ip_udp_dhcp_packet) != 576 + CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS) ? -1 : 1];
};
uint16_t udhcp_checksum(void *addr, int count) FAST_FUNC;
void udhcp_init_header(struct dhcpMessage *packet, char type) FAST_FUNC;
void udhcp_init_header(struct dhcp_packet *packet, char type) FAST_FUNC;
/*int udhcp_recv_raw_packet(struct dhcpMessage *dhcp_pkt, int fd); - in dhcpc.h */
int udhcp_recv_kernel_packet(struct dhcpMessage *packet, int fd) FAST_FUNC;
/*int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd); - in dhcpc.h */
int udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd) FAST_FUNC;
int udhcp_send_raw_packet(struct dhcpMessage *dhcp_pkt,
int udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt,
uint32_t source_ip, int source_port,
uint32_t dest_ip, int dest_port, const uint8_t *dest_arp,
int ifindex) FAST_FUNC;
int udhcp_send_kernel_packet(struct dhcpMessage *dhcp_pkt,
int udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt,
uint32_t source_ip, int source_port,
uint32_t dest_ip, int dest_port) FAST_FUNC;
/**/
void udhcp_run_script(struct dhcpMessage *packet, const char *name) FAST_FUNC;
void udhcp_run_script(struct dhcp_packet *packet, const char *name) FAST_FUNC;
// Still need to clean these up...
@ -104,16 +103,22 @@ int arpping(uint32_t test_ip,
extern int dhcp_verbose;
# define log1(...) do { if (dhcp_verbose >= 1) bb_info_msg(__VA_ARGS__); } while (0)
# if CONFIG_UDHCP_DEBUG >= 2
void udhcp_dump_packet(struct dhcpMessage *packet) FAST_FUNC;
void udhcp_dump_packet(struct dhcp_packet *packet) FAST_FUNC;
# define log2(...) do { if (dhcp_verbose >= 2) bb_info_msg(__VA_ARGS__); } while (0)
# else
# define udhcp_dump_packet(...) ((void)0)
# define log2(...) ((void)0)
# endif
# if CONFIG_UDHCP_DEBUG >= 3
# define log3(...) do { if (dhcp_verbose >= 3) bb_info_msg(__VA_ARGS__); } while (0)
# else
# define log3(...) ((void)0)
# endif
#else
# define udhcp_dump_packet(...) ((void)0)
# define log1(...) ((void)0)
# define log2(...) ((void)0)
# define log3(...) ((void)0)
#endif
POP_SAVED_FUNCTION_VISIBILITY

6
networking/udhcp/dhcpc.c
View File

@ -149,7 +149,7 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
int max_fd;
int retval;
struct timeval tv;
struct dhcpMessage packet;
struct dhcp_packet packet;
fd_set rfds;
#if ENABLE_GETOPT_LONG
@ -498,7 +498,9 @@ int udhcpc_main(int argc UNUSED_PARAM, char **argv)
}
/* Ignore packets that aren't for us */
if (memcmp(packet.chaddr, client_config.client_mac, 6)) {
if (packet.hlen != 6
|| memcmp(packet.chaddr, client_config.client_mac, 6)
) {
//FIXME: need to also check that last 10 bytes are zero
log1("chaddr does not match, ignoring packet"); // log2?
continue;

2
networking/udhcp/dhcpc.h
View File

@ -43,7 +43,7 @@ int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr) FAST_FUNC;
int send_renew(uint32_t xid, uint32_t server, uint32_t ciaddr) FAST_FUNC;
int send_release(uint32_t server, uint32_t ciaddr) FAST_FUNC;
int udhcp_recv_raw_packet(struct dhcpMessage *dhcp_pkt, int fd) FAST_FUNC;
int udhcp_recv_raw_packet(struct dhcp_packet *dhcp_pkt, int fd) FAST_FUNC;
POP_SAVED_FUNCTION_VISIBILITY

18
networking/udhcp/dhcpd.c
View File

@ -18,7 +18,7 @@
/* globals */
struct dhcpOfferedAddr *leases;
struct dyn_lease *leases;
/* struct server_config_t server_config is in bb_common_bufsiz1 */
@ -27,7 +27,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
{
fd_set rfds;
int server_socket = -1, retval, max_sock;
struct dhcpMessage packet;
struct dhcp_packet packet;
uint8_t *state, *server_id, *requested;
uint32_t server_id_aligned = server_id_aligned; /* for compiler */
uint32_t requested_aligned = requested_aligned;
@ -36,7 +36,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
unsigned num_ips;
unsigned opt;
struct option_set *option;
struct dhcpOfferedAddr *lease, static_lease;
struct dyn_lease *lease, static_lease;
IF_FEATURE_UDHCP_PORT(char *str_P;)
#if ENABLE_FEATURE_UDHCP_PORT
@ -170,6 +170,11 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
continue;
}
if (packet.hlen != 6) {
bb_error_msg("MAC length != 6, ignoring packet");
continue;
}
state = get_option(&packet, DHCP_MESSAGE_TYPE);
if (state == NULL) {
bb_error_msg("no message type option, ignoring packet");
@ -181,7 +186,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (static_lease_ip) {
bb_info_msg("Found static lease: %x", static_lease_ip);
memcpy(&static_lease.lease_mac16, &packet.chaddr, 16);
memcpy(&static_lease.lease_mac, &packet.chaddr, 6);
static_lease.lease_nip = static_lease_ip;
static_lease.expires = 0;
@ -212,7 +217,6 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (lease) {
if (server_id) {
/* SELECTING State */
log1("server_id = %08x", ntohl(server_id_aligned));
if (server_id_aligned == server_config.server_nip
&& requested
&& requested_aligned == lease->lease_nip
@ -242,7 +246,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
if (lease) {
if (lease_expired(lease)) {
/* probably best if we drop this lease */
memset(lease->lease_mac16, 0, 16);
memset(lease->lease_mac, 0, sizeof(lease->lease_mac));
} else {
/* make some contention for this address */
send_NAK(&packet);
@ -264,7 +268,7 @@ int udhcpd_main(int argc UNUSED_PARAM, char **argv)
case DHCPDECLINE:
log1("Received DECLINE");
if (lease) {
memset(lease->lease_mac16, 0, 16);
memset(lease->lease_mac, 0, sizeof(lease->lease_mac));
lease->expires = time(NULL) + server_config.decline_time;
}
break;

37
networking/udhcp/dhcpd.h
View File

@ -79,30 +79,33 @@ struct server_config_t {
typedef uint32_t leasetime_t;
typedef int32_t signed_leasetime_t;
//TODO: (1) rename to dyn_lease (that's what it is. we also have static_lease).
//(2) lease_mac16 may be shortened to lease_mac[6], since e.g. ARP probing uses
//only 6 first bytes anyway. We can check received dhcp packets
//that their "chaddr"s have only 6 first bytes != 0, and complain otherwise.
struct dhcpOfferedAddr {
uint8_t lease_mac16[16];
struct dyn_lease {
/* "nip": IP in network order */
uint32_t lease_nip;
/* Unix time when lease expires. Kept in memory in host order.
* When written to file, converted to network order
* and adjusted (current time subtracted) */
leasetime_t expires;
uint8_t hostname[20]; /* (size is a multiply of 4) */
uint32_t lease_nip;
/* We use lease_mac[6], since e.g. ARP probing uses
* only 6 first bytes anyway. We check received dhcp packets
* that their hlen == 6 and thus chaddr has only 6 significant bytes
* (dhcp packet has chaddr[16])
*/
uint8_t lease_mac[6];
uint8_t hostname[20];
uint8_t pad[2];
/* total size is a multiply of 4 */
};
extern struct dhcpOfferedAddr *leases;
extern struct dyn_lease *leases;
struct dhcpOfferedAddr *add_lease(
struct dyn_lease *add_lease(
const uint8_t *chaddr, uint32_t yiaddr,
leasetime_t leasetime, uint8_t *hostname
) FAST_FUNC;
int lease_expired(struct dhcpOfferedAddr *lease) FAST_FUNC;
struct dhcpOfferedAddr *find_lease_by_chaddr(const uint8_t *chaddr) FAST_FUNC;
struct dhcpOfferedAddr *find_lease_by_yiaddr(uint32_t yiaddr) FAST_FUNC;
int lease_expired(struct dyn_lease *lease) FAST_FUNC;
struct dyn_lease *find_lease_by_chaddr(const uint8_t *chaddr) FAST_FUNC;
struct dyn_lease *find_lease_by_yiaddr(uint32_t yiaddr) FAST_FUNC;
uint32_t find_free_or_expired_address(const uint8_t *chaddr) FAST_FUNC;
@ -121,10 +124,10 @@ void print_static_leases(struct static_lease **st_lease_pp) FAST_FUNC;
/*** serverpacket.h ***/
int send_offer(struct dhcpMessage *oldpacket) FAST_FUNC;
int send_NAK(struct dhcpMessage *oldpacket) FAST_FUNC;
int send_ACK(struct dhcpMessage *oldpacket, uint32_t yiaddr) FAST_FUNC;
int send_inform(struct dhcpMessage *oldpacket) FAST_FUNC;
int send_offer(struct dhcp_packet *oldpacket) FAST_FUNC;
int send_NAK(struct dhcp_packet *oldpacket) FAST_FUNC;
int send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr) FAST_FUNC;
int send_inform(struct dhcp_packet *oldpacket) FAST_FUNC;
/*** files.h ***/

8
networking/udhcp/dhcprelay.c
View File

@ -97,7 +97,7 @@ static void xid_del(uint32_t xid)
* p - pointer to the dhcp packet
* returns the message type on success, -1 otherwise
*/
static int get_dhcp_packet_type(struct dhcpMessage *p)
static int get_dhcp_packet_type(struct dhcp_packet *p)
{
uint8_t *op;
@ -175,7 +175,7 @@ static int init_sockets(char **client_ifaces, int num_clients,
* p - packet to send
* client - number of the client
*/
static void pass_to_server(struct dhcpMessage *p, int packet_len, int client, int *fds,
static void pass_to_server(struct dhcp_packet *p, int packet_len, int client, int *fds,
struct sockaddr_in *client_addr, struct sockaddr_in *server_addr)
{
int res, type;
@ -206,7 +206,7 @@ static void pass_to_server(struct dhcpMessage *p, int packet_len, int client, in
* pass_to_client() - forwards dhcp packets from server to client
* p - packet to send
*/
static void pass_to_client(struct dhcpMessage *p, int packet_len, int *fds)
static void pass_to_client(struct dhcp_packet *p, int packet_len, int *fds)
{
int res, type;
struct xid_item *item;
@ -240,7 +240,7 @@ static void pass_to_client(struct dhcpMessage *p, int packet_len, int *fds)
int dhcprelay_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
int dhcprelay_main(int argc, char **argv)
{
struct dhcpMessage dhcp_msg;
struct dhcp_packet dhcp_msg;
struct sockaddr_in server_addr;
struct sockaddr_in client_addr;
fd_set rfds;

4
networking/udhcp/dumpleases.c
View File

@ -25,7 +25,7 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
unsigned opt;
int64_t written_at, curr, expires_abs;
const char *file = LEASES_FILE;
struct dhcpOfferedAddr lease;
struct dyn_lease lease;
struct in_addr addr;
enum {
@ -61,7 +61,7 @@ int dumpleases_main(int argc UNUSED_PARAM, char **argv)
while (full_read(fd, &lease, sizeof(lease)) == sizeof(lease)) {
const char *fmt = ":%02x" + 1;
for (i = 0; i < 6; i++) {
printf(fmt, lease.lease_mac16[i]);
printf(fmt, lease.lease_mac[i]);
fmt = ":%02x";
}
addr.s_addr = lease.lease_nip;

4
networking/udhcp/files.c
View File

@ -390,7 +390,7 @@ void FAST_FUNC write_leases(void)
void FAST_FUNC read_leases(const char *file)
{
struct dhcpOfferedAddr lease;
struct dyn_lease lease;
int64_t written_at, time_passed;
int fd;
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
@ -420,7 +420,7 @@ void FAST_FUNC read_leases(const char *file)
continue;
/* NB: add_lease takes "relative time", IOW,
* lease duration, not lease deadline. */
if (!(add_lease(lease.lease_mac16, lease.lease_nip, expires, lease.hostname))) {
if (!(add_lease(lease.lease_mac, lease.lease_nip, expires, lease.hostname))) {
bb_error_msg("too many leases while loading %s", file);
break;
}

24
networking/udhcp/leases.c
View File

@ -11,9 +11,9 @@
/* Find the oldest expired lease, NULL if there are no expired leases */
static struct dhcpOfferedAddr *oldest_expired_lease(void)
static struct dyn_lease *oldest_expired_lease(void)
{
struct dhcpOfferedAddr *oldest_lease = NULL;
struct dyn_lease *oldest_lease = NULL;
leasetime_t oldest_time = time(NULL);
unsigned i;
@ -38,7 +38,7 @@ static void clear_lease(const uint8_t *chaddr, uint32_t yiaddr)
continue;
for (i = 0; i < server_config.max_leases; i++) {
if ((j != 16 && memcmp(leases[i].lease_mac16, chaddr, 16) == 0)
if ((j != 16 && memcmp(leases[i].lease_mac, chaddr, 6) == 0)
|| (yiaddr && leases[i].lease_nip == yiaddr)
) {
memset(&leases[i], 0, sizeof(leases[i]));
@ -48,11 +48,11 @@ static void clear_lease(const uint8_t *chaddr, uint32_t yiaddr)
/* Add a lease into the table, clearing out any old ones */
struct dhcpOfferedAddr* FAST_FUNC add_lease(
struct dyn_lease* FAST_FUNC add_lease(
const uint8_t *chaddr, uint32_t yiaddr,
leasetime_t leasetime, uint8_t *hostname)
{
struct dhcpOfferedAddr *oldest;
struct dyn_lease *oldest;
uint8_t hostname_length;
/* clean out any old ones */
@ -75,7 +75,7 @@ struct dhcpOfferedAddr* FAST_FUNC add_lease(
hostname++;
}
}
memcpy(oldest->lease_mac16, chaddr, 16);
memcpy(oldest->lease_mac, chaddr, 6);
oldest->lease_nip = yiaddr;
oldest->expires = time(NULL) + leasetime;
}
@ -85,19 +85,19 @@ struct dhcpOfferedAddr* FAST_FUNC add_lease(
/* True if a lease has expired */
int FAST_FUNC lease_expired(struct dhcpOfferedAddr *lease)
int FAST_FUNC lease_expired(struct dyn_lease *lease)
{
return (lease->expires < (leasetime_t) time(NULL));
}
/* Find the first lease that matches chaddr, NULL if no match */
struct dhcpOfferedAddr* FAST_FUNC find_lease_by_chaddr(const uint8_t *chaddr)
struct dyn_lease* FAST_FUNC find_lease_by_chaddr(const uint8_t *chaddr)
{
unsigned i;
for (i = 0; i < server_config.max_leases; i++)
if (!memcmp(leases[i].lease_mac16, chaddr, 16))
if (memcmp(leases[i].lease_mac, chaddr, 6) == 0)
return &(leases[i]);
return NULL;
@ -105,7 +105,7 @@ struct dhcpOfferedAddr* FAST_FUNC find_lease_by_chaddr(const uint8_t *chaddr)
/* Find the first lease that matches yiaddr, NULL is no match */
struct dhcpOfferedAddr* FAST_FUNC find_lease_by_yiaddr(uint32_t yiaddr)
struct dyn_lease* FAST_FUNC find_lease_by_yiaddr(uint32_t yiaddr)
{
unsigned i;
@ -146,12 +146,12 @@ static int nobody_responds_to_arp(uint32_t addr, const uint8_t *safe_mac)
uint32_t FAST_FUNC find_free_or_expired_address(const uint8_t *chaddr)
{
uint32_t addr;
struct dhcpOfferedAddr *oldest_lease = NULL;
struct dyn_lease *oldest_lease = NULL;
addr = server_config.start_ip; /* addr is in host order here */
for (; addr <= server_config.end_ip; addr++) {
uint32_t net_addr;
struct dhcpOfferedAddr *lease;
struct dyn_lease *lease;
/* ie, 192.168.55.0 */
if ((addr & 0xff) == 0)

15
networking/udhcp/options.c
View File

@ -120,7 +120,7 @@ const uint8_t dhcp_option_lengths[] ALIGN1 = {
/* get an option with bounds checking (warning, result is not aligned). */
uint8_t* FAST_FUNC get_option(struct dhcpMessage *packet, int code)
uint8_t* FAST_FUNC get_option(struct dhcp_packet *packet, int code)
{
uint8_t *optionptr;
int len;
@ -159,15 +159,21 @@ uint8_t* FAST_FUNC get_option(struct dhcpMessage *packet, int code)
rem = sizeof(packet->sname);
continue;
}
return NULL;
break;
}
len = 2 + optionptr[OPT_LEN];
rem -= len;
if (rem < 0)
continue; /* complain and return NULL */
if (optionptr[OPT_CODE] == code)
if (optionptr[OPT_CODE] == code) {
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
char buf[256 * 2 + 2];
*bin2hex(buf, (void*) (optionptr + OPT_DATA), optionptr[OPT_LEN]) = '\0';
log2("Option 0x%02x found: %s", code, buf);
#endif
return optionptr + OPT_DATA;
}
if (optionptr[OPT_CODE] == DHCP_OPTION_OVERLOAD) {
overload |= optionptr[OPT_DATA];
@ -175,6 +181,9 @@ uint8_t* FAST_FUNC get_option(struct dhcpMessage *packet, int code)
}
optionptr += len;
}
/* log3 because udhcpc uses it a lot - very noisy */
log3("Option 0x%02x not found", code);
return NULL;
}

2
networking/udhcp/options.h
View File

@ -100,7 +100,7 @@ extern const struct dhcp_option dhcp_options[];
extern const char dhcp_option_strings[];
extern const uint8_t dhcp_option_lengths[];
uint8_t *get_option(struct dhcpMessage *packet, int code) FAST_FUNC;
uint8_t *get_option(struct dhcp_packet *packet, int code) FAST_FUNC;
int end_option(uint8_t *optionptr) FAST_FUNC;
int add_option_string(uint8_t *optionptr, uint8_t *string) FAST_FUNC;
int add_simple_option(uint8_t *optionptr, uint8_t code, uint32_t data) FAST_FUNC;

20
networking/udhcp/packet.c
View File

@ -19,9 +19,9 @@
#include "dhcpd.h"
#include "options.h"
void FAST_FUNC udhcp_init_header(struct dhcpMessage *packet, char type)
void FAST_FUNC udhcp_init_header(struct dhcp_packet *packet, char type)
{
memset(packet, 0, sizeof(struct dhcpMessage));
memset(packet, 0, sizeof(struct dhcp_packet));
packet->op = BOOTREQUEST; /* if client to a server */
switch (type) {
case DHCPOFFER:
@ -37,7 +37,7 @@ void FAST_FUNC udhcp_init_header(struct dhcpMessage *packet, char type)
}
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 1
void FAST_FUNC udhcp_dump_packet(struct dhcpMessage *packet)
void FAST_FUNC udhcp_dump_packet(struct dhcp_packet *packet)
{
char buf[sizeof(packet->chaddr)*2 + 1];
@ -84,7 +84,7 @@ void FAST_FUNC udhcp_dump_packet(struct dhcpMessage *packet)
#endif
/* Read a packet from socket fd, return -1 on read error, -2 on packet error */
int FAST_FUNC udhcp_recv_kernel_packet(struct dhcpMessage *packet, int fd)
int FAST_FUNC udhcp_recv_kernel_packet(struct dhcp_packet *packet, int fd)
{
int bytes;
unsigned char *vendor;
@ -165,20 +165,20 @@ uint16_t FAST_FUNC udhcp_checksum(void *addr, int count)
}
/* Construct a ip/udp header for a packet, send packet */
int FAST_FUNC udhcp_send_raw_packet(struct dhcpMessage *dhcp_pkt,
int FAST_FUNC udhcp_send_raw_packet(struct dhcp_packet *dhcp_pkt,
uint32_t source_ip, int source_port,
uint32_t dest_ip, int dest_port, const uint8_t *dest_arp,
int ifindex)
{
struct sockaddr_ll dest;
struct udp_dhcp_packet packet;
struct ip_udp_dhcp_packet packet;
int fd;
int result = -1;
const char *msg;
enum {
IP_UPD_DHCP_SIZE = sizeof(struct udp_dhcp_packet) - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
UPD_DHCP_SIZE = IP_UPD_DHCP_SIZE - offsetof(struct udp_dhcp_packet, udp),
IP_UPD_DHCP_SIZE = sizeof(struct ip_udp_dhcp_packet) - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
UPD_DHCP_SIZE = IP_UPD_DHCP_SIZE - offsetof(struct ip_udp_dhcp_packet, udp),
};
fd = socket(PF_PACKET, SOCK_DGRAM, htons(ETH_P_IP));
@ -236,7 +236,7 @@ int FAST_FUNC udhcp_send_raw_packet(struct dhcpMessage *dhcp_pkt,
}
/* Let the kernel do all the work for packet generation */
int FAST_FUNC udhcp_send_kernel_packet(struct dhcpMessage *dhcp_pkt,
int FAST_FUNC udhcp_send_kernel_packet(struct dhcp_packet *dhcp_pkt,
uint32_t source_ip, int source_port,
uint32_t dest_ip, int dest_port)
{
@ -246,7 +246,7 @@ int FAST_FUNC udhcp_send_kernel_packet(struct dhcpMessage *dhcp_pkt,
const char *msg;
enum {
DHCP_SIZE = sizeof(struct dhcpMessage) - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
DHCP_SIZE = sizeof(struct dhcp_packet) - CONFIG_UDHCPC_SLACK_FOR_BUGGY_SERVERS,
};
fd = socket(PF_INET, SOCK_DGRAM, IPPROTO_UDP);

4
networking/udhcp/script.c
View File

@ -129,7 +129,7 @@ static char *alloc_fill_opts(uint8_t *option, const struct dhcp_option *type_p,
/* put all the parameters into an environment */
static char **fill_envp(struct dhcpMessage *packet)
static char **fill_envp(struct dhcp_packet *packet)
{
int num_options = 0;
int i;
@ -210,7 +210,7 @@ static char **fill_envp(struct dhcpMessage *packet)
/* Call a script with a par file and env vars */
void FAST_FUNC udhcp_run_script(struct dhcpMessage *packet, const char *name)
void FAST_FUNC udhcp_run_script(struct dhcp_packet *packet, const char *name)
{
char **envp, **curr;
char *argv[3];

30
networking/udhcp/serverpacket.c
View File

@ -27,7 +27,7 @@
/* send a packet to gateway_nip using the kernel ip stack */
static int send_packet_to_relay(struct dhcpMessage *dhcp_pkt)
static int send_packet_to_relay(struct dhcp_packet *dhcp_pkt)
{
log1("Forwarding packet to relay");
@ -38,7 +38,7 @@ static int send_packet_to_relay(struct dhcpMessage *dhcp_pkt)
/* send a packet to a specific mac address and ip address by creating our own ip packet */
static int send_packet_to_client(struct dhcpMessage *dhcp_pkt, int force_broadcast)
static int send_packet_to_client(struct dhcp_packet *dhcp_pkt, int force_broadcast)
{
const uint8_t *chaddr;
uint32_t ciaddr;
@ -76,7 +76,7 @@ static int send_packet_to_client(struct dhcpMessage *dhcp_pkt, int force_broadca
/* send a dhcp packet, if force broadcast is set, the packet will be broadcast to the client */
static int send_packet(struct dhcpMessage *dhcp_pkt, int force_broadcast)
static int send_packet(struct dhcp_packet *dhcp_pkt, int force_broadcast)
{
if (dhcp_pkt->gateway_nip)
return send_packet_to_relay(dhcp_pkt);
@ -84,11 +84,11 @@ static int send_packet(struct dhcpMessage *dhcp_pkt, int force_broadcast)
}
static void init_packet(struct dhcpMessage *packet, struct dhcpMessage *oldpacket, char type)
static void init_packet(struct dhcp_packet *packet, struct dhcp_packet *oldpacket, char type)
{
udhcp_init_header(packet, type);
packet->xid = oldpacket->xid;
memcpy(packet->chaddr, oldpacket->chaddr, 16);
memcpy(packet->chaddr, oldpacket->chaddr, sizeof(oldpacket->chaddr));
packet->flags = oldpacket->flags;
packet->gateway_nip = oldpacket->gateway_nip;
packet->ciaddr = oldpacket->ciaddr;
@ -97,7 +97,7 @@ static void init_packet(struct dhcpMessage *packet, struct dhcpMessage *oldpacke
/* add in the bootp options */
static void add_bootp_options(struct dhcpMessage *packet)
static void add_bootp_options(struct dhcp_packet *packet)
{
packet->siaddr_nip = server_config.siaddr_nip;
if (server_config.sname)
@ -108,9 +108,9 @@ static void add_bootp_options(struct dhcpMessage *packet)
/* send a DHCP OFFER to a DHCP DISCOVER */
int FAST_FUNC send_offer(struct dhcpMessage *oldpacket)
int FAST_FUNC send_offer(struct dhcp_packet *oldpacket)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
uint32_t req_align;
uint32_t lease_time_aligned = server_config.lease;
uint32_t static_lease_ip;
@ -124,7 +124,7 @@ int FAST_FUNC send_offer(struct dhcpMessage *oldpacket)
/* ADDME: if static, short circuit */
if (!static_lease_ip) {
struct dhcpOfferedAddr *lease;
struct dyn_lease *lease;
lease = find_lease_by_chaddr(oldpacket->chaddr);
/* The client is in our lease/offered table */
@ -195,9 +195,9 @@ int FAST_FUNC send_offer(struct dhcpMessage *oldpacket)
}
int FAST_FUNC send_NAK(struct dhcpMessage *oldpacket)
int FAST_FUNC send_NAK(struct dhcp_packet *oldpacket)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
init_packet(&packet, oldpacket, DHCPNAK);
@ -206,9 +206,9 @@ int FAST_FUNC send_NAK(struct dhcpMessage *oldpacket)
}
int FAST_FUNC send_ACK(struct dhcpMessage *oldpacket, uint32_t yiaddr)
int FAST_FUNC send_ACK(struct dhcp_packet *oldpacket, uint32_t yiaddr)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
struct option_set *curr;
uint8_t *lease_time;
uint32_t lease_time_aligned = server_config.lease;
@ -256,9 +256,9 @@ int FAST_FUNC send_ACK(struct dhcpMessage *oldpacket, uint32_t yiaddr)
}
int FAST_FUNC send_inform(struct dhcpMessage *oldpacket)
int FAST_FUNC send_inform(struct dhcp_packet *oldpacket)
{
struct dhcpMessage packet;
struct dhcp_packet packet;
struct option_set *curr;
init_packet(&packet, oldpacket, DHCPACK);