X-Git-Url: https://git.decadent.org.uk/gitweb/?p=odhcp6c.git;a=blobdiff_plain;f=src%2Fodhcp6c.h;h=08a816f4446dd893d89db315bf6f8932200ab2b8;hp=1b46af01df98325b62913b06131bdcaff8cb4e6a;hb=687b3c65c0460dd8c4ba7e63e3ae0ab20836e6e8;hpb=4ad21618ad863b5f590ed00f2c7677605a98e39f diff --git a/src/odhcp6c.h b/src/odhcp6c.h index 1b46af0..08a816f 100644 --- a/src/odhcp6c.h +++ b/src/odhcp6c.h @@ -1,5 +1,5 @@ /** - * Copyright (C) 2012 Steven Barth + * Copyright (C) 2012-2014 Steven Barth * * 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 @@ -18,42 +18,67 @@ #define _unused __attribute__((unused)) #define _packed __attribute__((packed)) +#define __aligned(n) __attribute__((aligned(n))) #define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0])) -#ifndef SOL_NETLINK -#define SOL_NETLINK 270 -#endif - #define ND_OPT_RECURSIVE_DNS 25 #define ND_OPT_DNSSL 31 +#define DHCPV6_SOL_MAX_RT 120 +#define DHCPV6_REQ_MAX_RT 30 +#define DHCPV6_CNF_MAX_RT 4 +#define DHCPV6_REN_MAX_RT 600 +#define DHCPV6_REB_MAX_RT 600 +#define DHCPV6_INF_MAX_RT 120 + +#define DEFAULT_MIN_UPDATE_INTERVAL 30 + enum dhcvp6_opt { DHCPV6_OPT_CLIENTID = 1, DHCPV6_OPT_SERVERID = 2, DHCPV6_OPT_IA_NA = 3, + DHCPV6_OPT_IA_TA = 4, DHCPV6_OPT_IA_ADDR = 5, DHCPV6_OPT_ORO = 6, DHCPV6_OPT_PREF = 7, DHCPV6_OPT_ELAPSED = 8, DHCPV6_OPT_RELAY_MSG = 9, DHCPV6_OPT_AUTH = 11, + DHCPV6_OPT_UNICAST = 12, DHCPV6_OPT_STATUS = 13, DHCPV6_OPT_RAPID_COMMIT = 14, + DHCPV6_OPT_USER_CLASS = 15, + DHCPV6_OPT_VENDOR_CLASS = 16, DHCPV6_OPT_RECONF_MESSAGE = 19, DHCPV6_OPT_RECONF_ACCEPT = 20, 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_FQDN = 39, DHCPV6_OPT_NTP_SERVER = 56, DHCPV6_OPT_SIP_SERVER_D = 21, DHCPV6_OPT_SIP_SERVER_A = 22, - - /* draft-bhandari-dhc-class-based-prefix */ - DHCPV6_OPT_PREFIX_CLASS = 200, /* NOT STANDARDIZED! */ + DHCPV6_OPT_AFTR_NAME = 64, + DHCPV6_OPT_PD_EXCLUDE = 67, + 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 + /* draft-ietf-softwire-map-dhcp-08 */ + DHCPV6_OPT_S46_RULE = 89, + DHCPV6_OPT_S46_BR = 90, + DHCPV6_OPT_S46_DMR = 91, + DHCPV6_OPT_S46_V4V6BIND = 92, + DHCPV6_OPT_S46_PORTPARAMS = 93, + DHCPV6_OPT_S46_CONT_MAPE = 94, + DHCPV6_OPT_S46_CONT_MAPT = 95, + DHCPV6_OPT_S46_CONT_LW = 96, }; enum dhcpv6_opt_npt { @@ -78,24 +103,36 @@ enum dhcpv6_msg { }; enum dhcpv6_status { + DHCPV6_Success = 0, + DHCPV6_UnspecFail = 1, DHCPV6_NoAddrsAvail = 2, + DHCPV6_NoBinding = 3, + DHCPV6_NotOnLink = 4, + DHCPV6_UseMulticast = 5, DHCPV6_NoPrefixAvail = 6, + _DHCPV6_Status_Max +}; + +enum dhcpv6_config { + DHCPV6_STRICT_OPTIONS = 1, + DHCPV6_CLIENT_FQDN = 2, + DHCPV6_ACCEPT_RECONFIGURE = 4, }; -typedef int(reply_handler)(enum dhcpv6_msg orig, - const void *opt, const void *end); +typedef int(reply_handler)(enum dhcpv6_msg orig, const int rc, + const void *opt, const void *end, const struct sockaddr_in6 *from); // retransmission strategy struct dhcpv6_retx { bool delay; uint8_t init_timeo; uint16_t max_timeo; + uint8_t max_rc; char name[8]; reply_handler *handler_reply; int(*handler_finish)(void); }; - // DHCPv6 Protocol Headers struct dhcpv6_header { uint8_t msg_type; @@ -134,6 +171,49 @@ struct dhcpv6_duid { uint8_t data[128]; } _packed; +struct dhcpv6_auth_reconfigure { + uint16_t type; + uint16_t len; + uint8_t protocol; + uint8_t algorithm; + uint8_t rdm; + uint64_t replay; + uint8_t reconf_type; + uint8_t key[16]; +} _packed; + +struct dhcpv6_cer_id { + uint16_t type; + uint16_t len; + struct in6_addr addr; +} _packed; + +struct dhcpv6_s46_portparams { + uint8_t offset; + uint8_t psid_len; + uint16_t psid; +} _packed; + +struct dhcpv6_s46_v4v6bind { + struct in_addr ipv4_address; + uint8_t bindprefix6_len; + uint8_t bind_ipv6_prefix[]; +} _packed; + +struct dhcpv6_s46_dmr { + uint8_t dmr_prefix6_len; + uint8_t dmr_ipv6_prefix[]; +} _packed; + +struct dhcpv6_s46_rule { + uint8_t flags; + uint8_t ea_len; + uint8_t prefix4_len; + struct in_addr ipv4_prefix; + uint8_t prefix6_len; + uint8_t ipv6_prefix[]; +} _packed; + #define dhcpv6_for_each_option(start, end, otype, olen, odata)\ for (uint8_t *_o = (uint8_t*)(start); _o + 4 <= (uint8_t*)(end) &&\ ((otype) = _o[0] << 8 | _o[1]) && ((odata) = (void*)&_o[4]) &&\ @@ -147,6 +227,12 @@ struct dhcpv6_server_cand { int16_t preference; uint8_t duid_len; uint8_t duid[130]; + uint32_t sol_max_rt; + uint32_t inf_max_rt; + void *ia_na; + void *ia_pd; + size_t ia_na_len; + size_t ia_pd_len; }; @@ -154,19 +240,31 @@ enum odhcp6c_state { STATE_CLIENT_ID, STATE_SERVER_ID, STATE_SERVER_CAND, + STATE_SERVER_ADDR, STATE_ORO, STATE_DNS, STATE_SEARCH, STATE_IA_NA, STATE_IA_PD, + STATE_IA_PD_INIT, STATE_CUSTOM_OPTS, STATE_SNTP_IP, - STATE_SNTP_FQDN, + STATE_NTP_IP, + STATE_NTP_FQDN, STATE_SIP_IP, STATE_SIP_FQDN, STATE_RA_ROUTE, STATE_RA_PREFIX, STATE_RA_DNS, + STATE_RA_SEARCH, + STATE_AFTR_NAME, + STATE_VENDORCLASS, + STATE_USERCLASS, + STATE_CER, + STATE_S46_MAPT, + STATE_S46_MAPE, + STATE_S46_LW, + STATE_PASSTHRU, _STATE_MAX }; @@ -179,12 +277,11 @@ struct icmp6_opt { enum dhcpv6_mode { - DHCPV6_UNKNOWN, + DHCPV6_UNKNOWN = -1, DHCPV6_STATELESS, DHCPV6_STATEFUL }; - enum odhcp6c_ia_mode { IA_MODE_NONE, IA_MODE_TRY, @@ -194,41 +291,66 @@ enum odhcp6c_ia_mode { struct odhcp6c_entry { struct in6_addr router; - uint16_t length; + uint8_t auxlen; + uint8_t length; int16_t priority; struct in6_addr target; uint32_t valid; uint32_t preferred; - uint32_t prefix_class; + uint32_t t1; + uint32_t t2; + uint32_t iaid; + 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))) -int init_dhcpv6(const char *ifname, int request_pd); -void dhcpv6_set_ia_na_mode(enum odhcp6c_ia_mode mode); + +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); int dhcpv6_request(enum dhcpv6_msg type); int dhcpv6_poll_reconfigure(void); +int dhcpv6_promote_server_cand(void); int init_rtnetlink(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 script_init(const char *path, const char *ifname); ssize_t script_unhexlify(uint8_t *dst, size_t len, const char *src); -void script_call(const char *status); +void script_call(const char *status, int delay, bool resume); bool odhcp6c_signal_process(void); uint64_t odhcp6c_get_milli_time(void); -void odhcp6c_random(void *buf, size_t len); +int odhcp6c_random(void *buf, size_t len); +bool odhcp6c_is_bound(void); // State manipulation void odhcp6c_clear_state(enum odhcp6c_state state); void 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_move_state(enum odhcp6c_state state, size_t *len); void* odhcp6c_get_state(enum odhcp6c_state state, size_t *len); // Entry manipulation -struct odhcp6c_entry* odhcp6c_find_entry(enum odhcp6c_state state, const struct odhcp6c_entry *new); -void odhcp6c_update_entry(enum odhcp6c_state state, struct odhcp6c_entry *new); -void odhcp6c_update_entry_safe(enum odhcp6c_state state, struct odhcp6c_entry *new, uint32_t safe); +bool odhcp6c_update_entry(enum odhcp6c_state state, struct odhcp6c_entry *new, uint32_t safe, bool filterexcess); void odhcp6c_expire(void); +uint32_t odhcp6c_elapsed(void);