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Diffstat (limited to 'src/customdhcpcd/interface.h')
| -rw-r--r-- | src/customdhcpcd/interface.h | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/customdhcpcd/interface.h b/src/customdhcpcd/interface.h new file mode 100644 index 0000000..8215d48 --- /dev/null +++ b/src/customdhcpcd/interface.h @@ -0,0 +1,173 @@ +/* + * dhcpcd - DHCP client daemon + * Copyright 2006-2008 Roy Marples <roy@marples.name> + * All rights reserved + + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef INTERFACE_H +#define INTERFACE_H + +#include <sys/types.h> +#include <sys/param.h> +#include <sys/queue.h> +#include <sys/socket.h> +#include <net/if.h> +#include <netinet/in.h> +#include <netinet/if_ether.h> +#include <limits.h> +#include <stdbool.h> + +#include "config.h" + +#ifdef __linux__ +# include <linux/netlink.h> +#endif + +#ifdef ENABLE_DUID +#ifndef DUID_LEN +# define DUID_LEN 128 + 2 +#endif +#endif + +#define EUI64_ADDR_LEN 8 +#define INFINIBAND_ADDR_LEN 20 + +/* Linux 2.4 doesn't define this */ +#ifndef ARPHRD_IEEE1394 +# define ARPHRD_IEEE1394 24 +#endif + +/* The BSD's don't define this yet */ +#ifndef ARPHRD_INFINIBAND +# define ARPHRD_INFINIBAND 32 +#endif + +#define HWADDR_LEN 20 + +/* Work out if we have a private address or not + * 10/8 + * 172.16/12 + * 192.168/16 + */ +#ifndef IN_PRIVATE +# define IN_PRIVATE(addr) (((addr & IN_CLASSA_NET) == 0x0a000000) || \ + ((addr & 0xfff00000) == 0xac100000) || \ + ((addr & IN_CLASSB_NET) == 0xc0a80000)) +#endif + +#define LINKLOCAL_ADDR 0xa9fe0000 +#define LINKLOCAL_MASK 0xffff0000 +#define LINKLOCAL_BRDC 0xa9feffff + +#ifndef IN_LINKLOCAL +# define IN_LINKLOCAL(addr) ((addr & IN_CLASSB_NET) == LINKLOCAL_ADDR) +#endif + +#ifndef STAILQ_ENTRY +# error "your sys/queue.h is too old and lacks STAILQ" +#endif + +#define NSTAILQ_FOREACH(var, head, field) \ + if (head) STAILQ_FOREACH (var, head, field) + +typedef struct route_t +{ + struct in_addr destination; + struct in_addr netmask; + struct in_addr gateway; + STAILQ_ENTRY (route_t) entries; +} route_t; +STAILQ_HEAD (route_head, route_t); + +typedef struct address_t +{ + struct in_addr address; + STAILQ_ENTRY (address_t) entries; +} address_t; +STAILQ_HEAD (address_head, address_t); + +typedef struct interface_t +{ + char name[IF_NAMESIZE]; + sa_family_t family; + unsigned char hwaddr[HWADDR_LEN]; + size_t hwlen; + bool arpable; + unsigned short mtu; + + int fd; + size_t buffer_length; + +#ifdef __linux__ + int listen_fd; + int socket_protocol; +#endif + + char infofile[PATH_MAX]; + + unsigned short previous_mtu; + struct in_addr previous_address; + struct in_addr previous_netmask; + struct route_head *previous_routes; + + time_t start_uptime; + + unsigned char *clientid; + size_t clientid_len; +} interface_t; + +void free_address (struct address_head *addresses); +void free_route (struct route_head *routes); +uint32_t get_netmask (uint32_t addr); +char *hwaddr_ntoa (const unsigned char *hwaddr, size_t hwlen); +size_t hwaddr_aton (unsigned char *hwaddr, const char *addr); + +interface_t *read_interface (const char *ifname, int metric); +int get_mtu (const char *ifname); +int set_mtu (const char *ifname, short int mtu); + +int add_address (const char *ifname, struct in_addr address, + struct in_addr netmask, struct in_addr broadcast); +int del_address (const char *ifname, struct in_addr address, + struct in_addr netmask); + +int flush_addresses (const char *ifname); +in_addr_t get_address (const char *ifname); +int has_address (const char *ifname, struct in_addr address); + +int add_route (const char *ifname, struct in_addr destination, + struct in_addr netmask, struct in_addr gateway, int metric); +int change_route (const char *ifname, struct in_addr destination, + struct in_addr netmask, struct in_addr gateway, int metric); +int del_route (const char *ifname, struct in_addr destination, + struct in_addr netmask, struct in_addr gateway, int metric); + +int inet_ntocidr (struct in_addr address); +int inet_cidrtoaddr (int cidr, struct in_addr *addr); + +#ifdef __linux__ +typedef int (*netlink_callback) (struct nlmsghdr *hdr, void *arg); +int send_netlink (struct nlmsghdr *hdr, netlink_callback callback, void *arg); +#endif +#endif |