#include <netinet/in.h>
#include <netinet/icmp6.h>
#include <netinet/ether.h>
-#include <net/if.h>
#include <stdbool.h>
#include <syslog.h>
-#include "libubox/blobmsg.h"
-
-#ifndef typeof
-#define typeof __typeof
-#endif
-
-#ifndef container_of
-#define container_of(ptr, type, member) ( \
- (type *)( (char *)ptr - offsetof(type,member) ))
-#endif
-
-#include "libubox/list.h"
-#include "libubox/uloop.h"
-
-#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
+#include <libubox/blobmsg.h>
+#include <libubox/list.h>
+#include <libubox/uloop.h>
+#include <libubox/avl.h>
+#include <libubox/ustream.h>
+#include <libubox/vlist.h>
// RFC 6106 defines this router advertisement option
#define ND_OPT_ROUTE_INFO 24
#define ND_OPT_RECURSIVE_DNS 25
#define ND_OPT_DNS_SEARCH 31
-#define RELAYD_BUFFER_SIZE 8192
-#define RELAYD_MAX_PREFIXES 8
+#define INFINITE_VALID(x) ((x) == 0)
#define _unused __attribute__((unused))
#define _packed __attribute__((packed))
+#define ALL_IPV6_NODES "ff02::1"
+#define ALL_IPV6_ROUTERS "ff02::2"
-#define ALL_IPV6_NODES {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01}}}
-
-#define ALL_IPV6_ROUTERS {{{0xff, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,\
- 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02}}}
+#define IN6_IS_ADDR_ULA(a) (((a)->s6_addr32[0] & htonl(0xfe000000)) == htonl(0xfc000000))
+#define ADDR_MATCH_PIO_FILTER(_addr, iface) (odhcpd_bmemcmp(&(_addr)->addr, \
+ &(iface)->pio_filter_addr, \
+ (iface)->pio_filter_length) != 0 || \
+ (_addr)->prefix < (iface)->pio_filter_length)
struct interface;
-extern struct list_head leases;
+struct nl_sock;
+extern struct vlist_tree leases;
+extern struct config config;
struct odhcpd_event {
struct uloop_fd uloop;
void (*handle_dgram)(void *addr, void *data, size_t len,
- struct interface *iface);
+ struct interface *iface, void *dest_addr);
+ void (*handle_error)(struct odhcpd_event *e, int error);
+ void (*recv_msgs)(struct odhcpd_event *e);
+};
+
+typedef int (*send_reply_cb_t)(const void *buf, size_t len,
+ const struct sockaddr *dest, socklen_t dest_len,
+ void *opaque);
+
+typedef void (*dhcpv6_binding_cb_handler_t)(struct in6_addr *addr, int prefix,
+ uint32_t pref, uint32_t valid,
+ void *arg);
+
+union if_addr {
+ struct in_addr in;
+ struct in6_addr in6;
+};
+
+struct netevent_handler_info {
+ struct interface *iface;
+ union {
+ struct {
+ union if_addr dst;
+ uint8_t dst_len;
+ union if_addr gateway;
+ } rt;
+ struct {
+ union if_addr dst;
+ uint16_t state;
+ uint8_t flags;
+ } neigh;
+ struct {
+ struct odhcpd_ipaddr *addrs;
+ size_t len;
+ } addrs_old;
+ union if_addr addr;
+ };
};
+enum netevents {
+ NETEV_IFINDEX_CHANGE,
+ NETEV_ADDR_ADD,
+ NETEV_ADDR_DEL,
+ NETEV_ADDRLIST_CHANGE,
+ NETEV_ADDR6_ADD,
+ NETEV_ADDR6_DEL,
+ NETEV_ADDR6LIST_CHANGE,
+ NETEV_ROUTE6_ADD,
+ NETEV_ROUTE6_DEL,
+ NETEV_NEIGH6_ADD,
+ NETEV_NEIGH6_DEL,
+};
+
+struct netevent_handler {
+ struct list_head head;
+ void (*cb) (unsigned long event, struct netevent_handler_info *info);
+};
struct odhcpd_ipaddr {
- struct in6_addr addr;
+ union if_addr addr;
uint8_t prefix;
- uint8_t dprefix;
- bool has_class;
- uint16_t class;
uint32_t preferred;
uint32_t valid;
+
+ /* ipv6 only */
+ uint8_t dprefix;
+
+ /* ipv4 only */
+ struct in_addr broadcast;
};
enum odhcpd_mode {
- RELAYD_DISABLED,
- RELAYD_SERVER,
- RELAYD_RELAY,
- RELAYD_HYBRID
+ MODE_DISABLED,
+ MODE_SERVER,
+ MODE_RELAY,
+ MODE_HYBRID
};
+enum odhcpd_assignment_flags {
+ OAF_TENTATIVE = (1 << 0),
+ OAF_BOUND = (1 << 1),
+ OAF_STATIC = (1 << 2),
+ OAF_BROKEN_HOSTNAME = (1 << 3),
+ OAF_DHCPV4 = (1 << 4),
+ OAF_DHCPV6_NA = (1 << 5),
+ OAF_DHCPV6_PD = (1 << 6),
+};
+
struct config {
bool legacy;
+ bool main_dhcpv4;
char *dhcp_cb;
char *dhcp_statefile;
-} config;
+ int log_level;
+};
struct lease {
- struct list_head head;
- struct in_addr ipaddr;
+ struct vlist_node node;
+ struct list_head assignments;
+ uint32_t ipaddr;
uint32_t hostid;
struct ether_addr mac;
uint16_t duid_len;
uint8_t *duid;
- char hostname[];
+ uint32_t leasetime;
+ char *hostname;
+};
+
+enum {
+ LEASE_ATTR_IP,
+ LEASE_ATTR_MAC,
+ LEASE_ATTR_DUID,
+ LEASE_ATTR_HOSTID,
+ LEASE_ATTR_LEASETIME,
+ LEASE_ATTR_NAME,
+ LEASE_ATTR_MAX
};
+struct odhcpd_ref_ip;
-struct interface {
+struct dhcp_assignment {
struct list_head head;
+ struct list_head lease_list;
+
+ void (*dhcp_free_cb)(struct dhcp_assignment *a);
+
+ struct interface *iface;
+ struct lease *lease;
+
+ struct sockaddr_in6 peer;
+ time_t valid_until;
+ time_t preferred_until;
+
+#define fr_timer reconf_timer
+ struct uloop_timeout reconf_timer;
+#define accept_fr_nonce accept_reconf
+ bool accept_reconf;
+#define fr_cnt reconf_cnt
+ int reconf_cnt;
+ uint8_t key[16];
+ struct odhcpd_ref_ip *fr_ip;
+
+ uint32_t addr;
+ uint32_t assigned;
+ uint32_t iaid;
+ uint8_t length; // length == 128 -> IA_NA, length <= 64 -> IA_PD
+
+ struct odhcpd_ipaddr *managed;
+ ssize_t managed_size;
+ struct ustream_fd managed_sock;
+
+ unsigned int flags;
+ uint32_t leasetime;
+ char *hostname;
+ char *reqopts;
+#define hwaddr mac
+ uint8_t mac[6];
+
+ uint16_t clid_len;
+ uint8_t clid_data[];
+};
+
+
+struct interface {
+ struct avl_node avl;
int ifindex;
- char ifname[IF_NAMESIZE];
- char name[IF_NAMESIZE];
+ char *ifname;
+ const char *name;
+
+ // IPv6 runtime data
+ struct odhcpd_ipaddr *addr6;
+ size_t addr6_len;
- // Runtime data
+ // RA runtime data
+ struct odhcpd_event router_event;
struct uloop_timeout timer_rs;
- struct list_head ia_assignments;
- struct odhcpd_ipaddr ia_addr[8];
- size_t ia_addr_len;
- bool ia_reconf;
+ uint32_t ra_sent;
- // DHCPv4
+ // DHCPv6 runtime data
struct odhcpd_event dhcpv6_event;
+ struct list_head ia_assignments;
+
+ // NDP runtime data
+ struct odhcpd_event ndp_event;
+ int ndp_ping_fd;
+
+ // IPv4 runtime data
+ struct odhcpd_ipaddr *addr4;
+ size_t addr4_len;
+
+ // DHCPv4 runtime data
struct odhcpd_event dhcpv4_event;
struct list_head dhcpv4_assignments;
+ struct list_head dhcpv4_fr_ips;
// Managed PD
char dhcpv6_pd_manager[128];
bool master;
bool ignore;
bool always_rewrite_dns;
- bool ra_not_onlink;
- bool no_dynamic_dhcp;
+ bool dns_service;
+ // NDP
int learn_routes;
+
+ // RA
+ uint8_t ra_flags;
+ bool ra_slaac;
+ bool ra_not_onlink;
+ bool ra_advrouter;
+ bool ra_useleasetime;
+ bool ra_dns;
+ bool no_dynamic_dhcp;
+ uint8_t pio_filter_length;
+ struct in6_addr pio_filter_addr;
int default_router;
- int managed;
int route_preference;
+ int ra_maxinterval;
+ int ra_mininterval;
+ int ra_lifetime;
+ uint32_t ra_reachabletime;
+ uint32_t ra_retranstime;
+ uint32_t ra_hoplimit;
+ int ra_mtu;
+ uint32_t preferred_lifetime;
+
+ // DHCP
+ uint32_t dhcp_leasetime;
// DHCPv4
struct in_addr dhcpv4_start;
struct in_addr dhcpv4_end;
+ struct in_addr dhcpv4_start_ip;
+ struct in_addr dhcpv4_end_ip;
+ struct in_addr dhcpv4_local;
+ struct in_addr dhcpv4_bcast;
+ struct in_addr dhcpv4_mask;
+ struct in_addr *dhcpv4_router;
+ size_t dhcpv4_router_cnt;
struct in_addr *dhcpv4_dns;
size_t dhcpv4_dns_cnt;
- uint32_t dhcpv4_leasetime;
+ bool dhcpv4_forcereconf;
// DNS
struct in6_addr *dns;
uint8_t *search;
size_t search_len;
+ // DHCPV6
void *dhcpv6_raw;
size_t dhcpv6_raw_len;
-
- char* static_ndp;
- size_t static_ndp_len;
+ bool dhcpv6_assignall;
+ bool dhcpv6_pd;
+ bool dhcpv6_na;
char *upstream;
size_t upstream_len;
char *filter_class;
};
-extern struct list_head interfaces;
+extern struct avl_tree interfaces;
+extern const struct blobmsg_policy lease_attrs[LEASE_ATTR_MAX];
+
+inline static void free_assignment(struct dhcp_assignment *a)
+{
+ list_del(&a->head);
+ list_del(&a->lease_list);
-#define RELAYD_MANAGED_MFLAG 1
-#define RELAYD_MANAGED_NO_AFLAG 2
+ if (a->dhcp_free_cb)
+ a->dhcp_free_cb(a);
+ free(a->hostname);
+ free(a->reqopts);
+ free(a);
+}
+
+inline static struct dhcp_assignment *alloc_assignment(size_t extra_len)
+{
+ struct dhcp_assignment *a = calloc(1, sizeof(*a) + extra_len);
+
+ if (!a)
+ return NULL;
+
+ INIT_LIST_HEAD(&a->head);
+ INIT_LIST_HEAD(&a->lease_list);
+
+ return a;
+}
// Exported main functions
-int odhcpd_open_rtnl(void);
int odhcpd_register(struct odhcpd_event *event);
+int odhcpd_deregister(struct odhcpd_event *event);
+void odhcpd_process(struct odhcpd_event *event);
ssize_t odhcpd_send(int socket, struct sockaddr_in6 *dest,
struct iovec *iov, size_t iov_len,
const struct interface *iface);
-ssize_t odhcpd_get_interface_addresses(int ifindex,
- struct odhcpd_ipaddr *addrs, size_t cnt);
-struct interface* odhcpd_get_interface_by_name(const char *name);
-int odhcpd_get_interface_mtu(const char *ifname);
+int odhcpd_get_interface_dns_addr(const struct interface *iface,
+ struct in6_addr *addr);
+int odhcpd_get_interface_config(const char *ifname, const char *what);
int odhcpd_get_mac(const struct interface *iface, uint8_t mac[6]);
struct interface* odhcpd_get_interface_by_index(int ifindex);
-struct interface* odhcpd_get_master_interface(void);
-void odhcpd_urandom(void *data, size_t len);
-void odhcpd_setup_route(const struct in6_addr *addr, int prefixlen,
- const struct interface *iface, const struct in6_addr *gw, bool add);
+int odhcpd_urandom(void *data, size_t len);
void odhcpd_run(void);
time_t odhcpd_time(void);
ssize_t odhcpd_unhexlify(uint8_t *dst, size_t len, const char *src);
void odhcpd_hexlify(char *dst, const uint8_t *src, size_t len);
+const char *odhcpd_print_mac(const uint8_t *mac, const size_t len);
int odhcpd_bmemcmp(const void *av, const void *bv, size_t bits);
void odhcpd_bmemcpy(void *av, const void *bv, size_t bits);
+int odhcpd_netmask2bitlen(bool v6, void *mask);
+bool odhcpd_bitlen2netmask(bool v6, unsigned int bits, void *mask);
+bool odhcpd_valid_hostname(const char *name);
+
int config_parse_interface(void *data, size_t len, const char *iname, bool overwrite);
+struct lease *config_find_lease_by_duid(const uint8_t *duid, const uint16_t len);
+struct lease *config_find_lease_by_mac(const uint8_t *mac);
+struct lease *config_find_lease_by_hostid(const uint32_t hostid);
+struct lease *config_find_lease_by_ipaddr(const uint32_t ipaddr);
+int set_lease_from_blobmsg(struct blob_attr *ba);
#ifdef WITH_UBUS
-int init_ubus(void);
+int ubus_init(void);
const char* ubus_get_ifname(const char *name);
void ubus_apply_network(void);
bool ubus_has_prefix(const char *name, const char *ifname);
-bool ubus_get_class(const char *ifname, const struct in6_addr *addr, uint16_t *pclass);
+void ubus_bcast_dhcp_event(const char *type, const uint8_t *mac, const size_t mac_len,
+ const struct in_addr *addr, const char *name, const char *interface);
#endif
+ssize_t dhcpv6_ia_handle_IAs(uint8_t *buf, size_t buflen, struct interface *iface,
+ const struct sockaddr_in6 *addr, const void *data, const uint8_t *end);
+int dhcpv6_ia_init(void);
+int dhcpv6_ia_setup_interface(struct interface *iface, bool enable);
+void dhcpv6_ia_enum_addrs(struct interface *iface, struct dhcp_assignment *c, time_t now,
+ dhcpv6_binding_cb_handler_t func, void *arg);
+void dhcpv6_ia_write_statefile(void);
+
+int netlink_add_netevent_handler(struct netevent_handler *hdlr);
+ssize_t netlink_get_interface_addrs(const int ifindex, bool v6,
+ struct odhcpd_ipaddr **addrs);
+int netlink_get_interface_proxy_neigh(int ifindex, const struct in6_addr *addr);
+int netlink_setup_route(const struct in6_addr *addr, const int prefixlen,
+ const int ifindex, const struct in6_addr *gw,
+ const uint32_t metric, const bool add);
+int netlink_setup_proxy_neigh(const struct in6_addr *addr,
+ const int ifindex, const bool add);
+int netlink_setup_addr(struct odhcpd_ipaddr *addr,
+ const int ifindex, const bool v6, const bool add);
+void netlink_dump_neigh_table(const bool proxy);
+void netlink_dump_addr_table(const bool v6);
// Exported module initializers
-int init_router(void);
-int init_dhcpv6(void);
-int init_dhcpv4(void);
-int init_ndp(void);
-
-int setup_router_interface(struct interface *iface, bool enable);
-int setup_dhcpv6_interface(struct interface *iface, bool enable);
-int setup_ndp_interface(struct interface *iface, bool enable);
-int setup_dhcpv4_interface(struct interface *iface, bool enable);
+int netlink_init(void);
+int router_init(void);
+int dhcpv6_init(void);
+int ndp_init(void);
+#ifdef DHCPV4_SUPPORT
+int dhcpv4_init(void);
+
+int dhcpv4_setup_interface(struct interface *iface, bool enable);
+void dhcpv4_handle_msg(void *addr, void *data, size_t len,
+ struct interface *iface, _unused void *dest_addr,
+ send_reply_cb_t send_reply, void *opaque);
+#endif
+int router_setup_interface(struct interface *iface, bool enable);
+int dhcpv6_setup_interface(struct interface *iface, bool enable);
+int ndp_setup_interface(struct interface *iface, bool enable);
void odhcpd_reload(void);
projects / project / odhcpd.git / blobdiff