/**
* Copyright (C) 2012-2014 Steven Barth <steven@midlink.org>
+ * Copyright (C) 2018 Hans Dedecker <dedeckeh@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License v2 as published by
#define _unused __attribute__((unused))
#define _packed __attribute__((packed))
+#define _aligned(n) __attribute__((aligned(n)))
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define DHCPV6_REB_MAX_RT 600
#define DHCPV6_INF_MAX_RT 120
-#define DEFAULT_MIN_UPDATE_INTERVAL 30
+#define RA_MIN_ADV_INTERVAL 3 /* RFC 4861 paragraph 6.2.1 */
enum dhcvp6_opt {
DHCPV6_OPT_CLIENTID = 1,
DHCPV6_OPT_RAPID_COMMIT = 14,
DHCPV6_OPT_USER_CLASS = 15,
DHCPV6_OPT_VENDOR_CLASS = 16,
+ DHCPV6_OPT_INTERFACE_ID = 18,
DHCPV6_OPT_RECONF_MESSAGE = 19,
DHCPV6_OPT_RECONF_ACCEPT = 20,
+ DHCPV6_OPT_SIP_SERVER_D = 21,
+ DHCPV6_OPT_SIP_SERVER_A = 22,
DHCPV6_OPT_DNS_SERVERS = 23,
DHCPV6_OPT_DNS_DOMAIN = 24,
DHCPV6_OPT_IA_PD = 25,
DHCPV6_OPT_IA_PREFIX = 26,
DHCPV6_OPT_SNTP_SERVERS = 31,
DHCPV6_OPT_INFO_REFRESH = 32,
+ DHCPV6_OPT_REMOTE_ID = 37,
+ DHCPV6_OPT_SUBSCRIBER_ID = 38,
DHCPV6_OPT_FQDN = 39,
+ DHCPV6_OPT_ERO = 43,
+ DHCPV6_OPT_LQ_QUERY = 44,
+ DHCPV6_OPT_CLIENT_DATA = 45,
+ DHCPV6_OPT_CLT_TIME = 46,
+ DHCPV6_OPT_LQ_RELAY_DATA = 47,
+ DHCPV6_OPT_LQ_CLIENT_LINK = 48,
+ DHCPV6_OPT_RELAY_ID = 53,
DHCPV6_OPT_NTP_SERVER = 56,
- DHCPV6_OPT_SIP_SERVER_D = 21,
- DHCPV6_OPT_SIP_SERVER_A = 22,
+ DHCPV6_OPT_CLIENT_ARCH_TYPE = 61,
DHCPV6_OPT_AFTR_NAME = 64,
+ DHCPV6_OPT_RSOO = 66,
DHCPV6_OPT_PD_EXCLUDE = 67,
+ DHCPV6_OPT_VSS = 68,
+ DHCPV6_OPT_LINK_LAYER_ADDRESS = 79,
+ DHCPV6_OPT_LINK_ADDRESS = 80,
+ DHCPV6_OPT_RADIUS = 81,
DHCPV6_OPT_SOL_MAX_RT = 82,
DHCPV6_OPT_INF_MAX_RT = 83,
#ifdef EXT_CER_ID
/* draft-donley-dhc-cer-id-option-03 */
DHCPV6_OPT_CER_ID = EXT_CER_ID,
#endif
+ DHCPV6_OPT_DHCPV4_MSG = 87,
/* draft-ietf-softwire-map-dhcp-08 */
DHCPV6_OPT_S46_RULE = 89,
DHCPV6_OPT_S46_BR = 90,
DHCPV6_OPT_S46_CONT_MAPE = 94,
DHCPV6_OPT_S46_CONT_MAPT = 95,
DHCPV6_OPT_S46_CONT_LW = 96,
+ DHCPV6_OPT_LQ_BASE_TIME = 100,
+ DHCPV6_OPT_LQ_START_TIME = 101,
+ DHCPV6_OPT_LQ_END_TIME = 102,
+ DHCPV6_OPT_ANI_ATT = 105,
+ DHCPV6_OPT_ANI_NETWORK_NAME = 106,
+ DHCPV6_OPT_ANI_AP_NAME = 107,
+ DHCPV6_OPT_ANI_AP_BSSID = 108,
+ DHCPV6_OPT_ANI_OPERATOR_ID = 109,
+ DHCPV6_OPT_ANI_OPERATOR_REALM = 110,
+ DHCPV6_OPT_MUD_URL_V6 = 112,
+ DHCPV6_OPT_F_BINDING_STATUS = 114,
+ DHCPV6_OPT_F_CONNECT_FLAGS = 115,
+ DHCPV6_OPT_F_DNS_REMOVAL_INFO = 116,
+ DHCPV6_OPT_F_DNS_HOST_NAME = 117,
+ DHCPV6_OPT_F_DNS_ZONE_NAME = 118,
+ DHCPV6_OPT_F_DNS_FLAGS = 119,
+ DHCPV6_OPT_F_EXPIRATION_TIME = 120,
+ DHCPV6_OPT_F_MAX_UNACKED_BNDUPD = 121,
+ DHCPV6_OPT_F_MCLT = 122,
+ DHCPV6_OPT_F_PARTNER_LIFETIME = 123,
+ DHCPV6_OPT_F_PARTNER_LIFETIME_SENT = 124,
+ DHCPV6_OPT_F_PARTNER_DOWN_TIME = 125,
+ DHCPV6_OPT_F_PARTNER_RAW_CLT_TIME = 126,
+ DHCPV6_OPT_F_PROTOCOL_VERSION = 127,
+ DHCPV6_OPT_F_KEEPALIVE_TIME = 128,
+ DHCPV6_OPT_F_RECONFIGURE_DATA = 129,
+ DHCPV6_OPT_F_RELATIONSHIP_NAME = 130,
+ DHCPV6_OPT_F_SERVER_FLAGS = 131,
+ DHCPV6_OPT_F_SERVER_STATE = 132,
+ DHCPV6_OPT_F_START_TIME_OF_STATE = 133,
+ DHCPV6_OPT_F_STATE_EXPIRATION_TIME = 134,
+ DHCPV6_OPT_RELAY_PORT = 135,
};
enum dhcpv6_opt_npt {
DHCPV6_STRICT_OPTIONS = 1,
DHCPV6_CLIENT_FQDN = 2,
DHCPV6_ACCEPT_RECONFIGURE = 4,
+ DHCPV6_IGNORE_OPT_UNICAST = 8,
};
typedef int(reply_handler)(enum dhcpv6_msg orig, const int rc,
int16_t preference;
uint8_t duid_len;
uint8_t duid[130];
+ struct in6_addr server_addr;
uint32_t sol_max_rt;
uint32_t inf_max_rt;
void *ia_na;
STATE_RA_DNS,
STATE_RA_SEARCH,
STATE_AFTR_NAME,
- STATE_VENDORCLASS,
- STATE_USERCLASS,
+ STATE_OPTS,
STATE_CER,
STATE_S46_MAPT,
STATE_S46_MAPE,
_STATE_MAX
};
-
struct icmp6_opt {
uint8_t type;
uint8_t len;
DHCPV6_STATEFUL
};
+enum ra_config {
+ RA_RDNSS_DEFAULT_LIFETIME = 1,
+};
+
enum odhcp6c_ia_mode {
IA_MODE_NONE,
IA_MODE_TRY,
struct in6_addr router;
uint8_t auxlen;
uint8_t length;
- int16_t priority;
struct in6_addr target;
+ int16_t priority;
uint32_t valid;
uint32_t preferred;
uint32_t t1;
uint8_t auxtarget[];
};
+// Include padding after auxtarget to align the next entry
+#define odhcp6c_entry_size(entry) \
+ (sizeof(struct odhcp6c_entry) + (((entry)->auxlen + 3) & ~3))
+
+#define odhcp6c_next_entry(entry) \
+ ((struct odhcp6c_entry *)((uint8_t *)(entry) + odhcp6c_entry_size(entry)))
+
+
struct odhcp6c_request_prefix {
uint32_t iaid;
uint16_t length;
};
-int init_dhcpv6(const char *ifname, unsigned int client_options, int sol_timeout);
-int dhcpv6_set_ia_mode(enum odhcp6c_ia_mode na, enum odhcp6c_ia_mode pd);
+enum odhcp6c_opt_flags {
+ OPT_U8 = 0,
+ OPT_IP6,
+ OPT_STR,
+ OPT_DNS_STR,
+ OPT_USER_CLASS,
+ OPT_MASK_SIZE = 0x0F,
+ OPT_ARRAY = 0x10,
+ OPT_INTERNAL = 0x20,
+ OPT_NO_PASSTHRU = 0x40,
+ OPT_ORO = 0x80,
+ OPT_ORO_STATEFUL = 0x100,
+ OPT_ORO_STATELESS = 0x200,
+ OPT_ORO_SOLICIT = 0x400
+};
+
+struct odhcp6c_opt {
+ uint16_t code;
+ uint16_t flags;
+ const char *str;
+};
+
+int init_dhcpv6(const char *ifname, unsigned int client_options, int sk_prio, int sol_timeout);
+int dhcpv6_set_ia_mode(enum odhcp6c_ia_mode na, enum odhcp6c_ia_mode pd, bool stateful_only);
int dhcpv6_request(enum dhcpv6_msg type);
int dhcpv6_poll_reconfigure(void);
int dhcpv6_promote_server_cand(void);
int set_rtnetlink_addr(int ifindex, const struct in6_addr *addr,
uint32_t pref, uint32_t valid);
-int ra_conf_hoplimit(int newvalue);
-int ra_conf_mtu(int newvalue);
-int ra_conf_reachable(int newvalue);
-int ra_conf_retransmit(int newvalue);
+int ra_get_hoplimit(void);
+int ra_get_mtu(void);
+int ra_get_reachable(void);
+int ra_get_retransmit(void);
int script_init(const char *path, const char *ifname);
ssize_t script_unhexlify(uint8_t *dst, size_t len, const char *src);
uint64_t odhcp6c_get_milli_time(void);
int odhcp6c_random(void *buf, size_t len);
bool odhcp6c_is_bound(void);
+bool odhcp6c_addr_in_scope(const struct in6_addr *addr);
// State manipulation
void odhcp6c_clear_state(enum odhcp6c_state state);
-void odhcp6c_add_state(enum odhcp6c_state state, const void *data, size_t len);
+int odhcp6c_add_state(enum odhcp6c_state state, const void *data, size_t len);
void odhcp6c_append_state(enum odhcp6c_state state, const void *data, size_t len);
int odhcp6c_insert_state(enum odhcp6c_state state, size_t offset, const void *data, size_t len);
size_t odhcp6c_remove_state(enum odhcp6c_state state, size_t offset, size_t len);
void* odhcp6c_get_state(enum odhcp6c_state state, size_t *len);
// Entry manipulation
-bool odhcp6c_update_entry(enum odhcp6c_state state, struct odhcp6c_entry *new, uint32_t safe, bool filterexcess);
+bool odhcp6c_update_entry(enum odhcp6c_state state, struct odhcp6c_entry *new,
+ uint32_t safe, unsigned int holdoff_interval);
-void odhcp6c_expire(void);
+void odhcp6c_expire(bool expire_ia_pd);
uint32_t odhcp6c_elapsed(void);
+struct odhcp6c_opt *odhcp6c_find_opt(const uint16_t code);
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