mirror of
https://github.com/rsmarples/dhcpcd.git
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231 lines
6.4 KiB
C
231 lines
6.4 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2013 Roy Marples <roy@marples.name>
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* All rights reserved
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef DHCP6_H
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#define DHCP6_H
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#include "dhcpcd.h"
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#define ALLDHCP "ff02::1:2"
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/* UDP port numbers for DHCP */
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#define DHCP6_CLIENT_PORT 546
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#define DHCP6_SERVER_PORT 547
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/* DHCP message type */
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#define DHCP6_SOLICIT 1
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#define DHCP6_ADVERTISE 2
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#define DHCP6_REQUEST 3
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#define DHCP6_CONFIRM 4
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#define DHCP6_RENEW 5
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#define DHCP6_REBIND 6
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#define DHCP6_REPLY 7
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#define DHCP6_RELEASE 8
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#define DHCP6_DECLINE 9
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#define DHCP6_RECONFIGURE 10
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#define DHCP6_INFORMATION_REQ 11
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#define DHCP6_RELAY_FLOW 12
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#define DHCP6_RELAY_REPL 13
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#define D6_OPTION_CLIENTID 1
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#define D6_OPTION_SERVERID 2
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#define D6_OPTION_IA_NA 3
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#define D6_OPTION_IA_TA 4
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#define D6_OPTION_ORO 6
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#define D6_OPTION_IA_ADDR 5
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#define D6_OPTION_PREFERENCE 7
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#define D6_OPTION_ELAPSED 8
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#define D6_OPTION_RAPID_COMMIT 9
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#define D6_OPTION_UNICAST 12
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#define D6_OPTION_STATUS_CODE 13
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#define D6_OPTION_VENDOR 16
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#define D6_OPTION_SIP_SERVERS_NAME 21
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#define D6_OPTION_SIP_SERVERS_ADDRESS 22
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#define D6_OPTION_DNS_SERVERS 23
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#define D6_OPTION_DOMAIN_LIST 24
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#define D6_OPTION_IA_PD 25
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#define D6_OPTION_IAPREFIX 26
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#define D6_OPTION_NIS_SERVERS 27
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#define D6_OPTION_NISP_SERVERS 28
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#define D6_OPTION_NIS_DOMAIN_NAME 29
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#define D6_OPTION_NISP_DOMAIN_NAME 30
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#define D6_OPTION_SNTP_SERVERS 31
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#define D6_OPTION_INFO_REFRESH_TIME 32
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#define D6_OPTION_BCMS_SERVER_D 33
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#define D6_OPTION_BCMS_SERVER_A 34
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#define D6_OPTION_POSIX_TIMEZONE 41
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#define D6_OPTION_TZDB_TIMEZONE 42
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#include "dhcp.h"
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#include "ipv6.h"
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extern const struct dhcp_opt dhcp6_opts[];
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struct dhcp6_message {
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uint8_t type;
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uint8_t xid[3];
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/* followed by options */
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} __packed;
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struct dhcp6_option {
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uint16_t code;
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uint16_t len;
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/* followed by data */
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} __packed;
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struct dhcp6_status {
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uint16_t code;
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uint16_t len;
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uint16_t status;
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/* followed by message */
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} __packed;
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#define D6_STATUS_OK 0
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#define D6_STATUS_FAIL 1
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#define D6_STATUS_NOADDR 2
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#define D6_STATUS_NOBINDING 3
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#define D6_STATUS_NOTONLINK 4
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#define D6_STATUS_USEMULTICAST 5
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#define SOL_MAX_DELAY 1
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#define SOL_TIMEOUT 1
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#define SOL_MAX_RT 120
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#define REQ_TIMEOUT 1
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#define REQ_MAX_RT 30
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#define REQ_MAX_RC 10
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#define CNF_MAX_DELAY 1
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#define CNF_TIMEOUT 1
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#define CNF_MAX_RT 4
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#define CNF_MAX_RD 10
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#define REN_TIMEOUT 10
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#define REN_MAX_RT 600
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#define REB_TIMEOUT 10
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#define REB_MAX_RT 600
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#define INF_MAX_DELAY 1
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#define INF_TIMEOUT 1
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#define INF_MAX_RT 120
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#define REL_TIMEOUT 1
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#define REL_MAX_RC 5
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#define DEC_TIMEOUT 1
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#define DEC_MAX_RC 5
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#define REC_TIMEOUT 2
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#define REC_MAX_RC 8
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#define HOP_COUNT_LIMIT 32
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#define DHCP6_RAND_MIN -100
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#define DHCP6_RAND_MAX 100
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enum DH6S {
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DH6S_INIT,
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DH6S_DISCOVER,
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DH6S_REQUEST,
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DH6S_BOUND,
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DH6S_RENEW,
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DH6S_REBIND,
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DH6S_CONFIRM,
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DH6S_INFORM,
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DH6S_RENEW_REQUESTED,
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DH6S_PROBE,
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DH6S_DELEGATED,
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DH6S_RELEASE
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};
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struct dhcp6_state {
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enum DH6S state;
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time_t start_uptime;
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/* Message retransmission timings */
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struct timeval RT;
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int RTC;
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int IRT;
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int MRC;
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int MRT;
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void (*MRCcallback)(void *);
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struct dhcp6_message *send;
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size_t send_len;
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struct dhcp6_message *recv;
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size_t recv_len;
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struct dhcp6_message *new;
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size_t new_len;
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struct dhcp6_message *old;
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size_t old_len;
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uint32_t renew;
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uint32_t rebind;
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uint32_t expire;
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struct ipv6_addrhead addrs;
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uint32_t lowpl;
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uint32_t sla;
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uint8_t sla_set;
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char leasefile[PATH_MAX];
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const char *reason;
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};
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#define D6_STATE(ifp) \
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((struct dhcp6_state *)(ifp)->if_data[IF_DATA_DHCP6])
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#define D6_CSTATE(ifp) \
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((const struct dhcp6_state *)(ifp)->if_data[IF_DATA_DHCP6])
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#define D6_STATE_RUNNING(ifp) (D6_STATE((ifp)) && D6_STATE((ifp))->new)
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#define D6_FIRST_OPTION(m) \
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((struct dhcp6_option *) \
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((uint8_t *)(m) + sizeof(struct dhcp6_message)))
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#define D6_NEXT_OPTION(o) \
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((struct dhcp6_option *) \
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(((uint8_t *)o) + sizeof(struct dhcp6_option) + ntohs((o)->len)))
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#define D6_OPTION_DATA(o) \
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((uint8_t *)(o) + sizeof(struct dhcp6_option))
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#define D6_CFIRST_OPTION(m) \
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((const struct dhcp6_option *) \
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((const uint8_t *)(m) + sizeof(struct dhcp6_message)))
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#define D6_CNEXT_OPTION(o) \
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((const struct dhcp6_option *) \
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(((const uint8_t *)o) + sizeof(struct dhcp6_option) + ntohs((o)->len)))
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#define D6_COPTION_DATA(o) \
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((const uint8_t *)(o) + sizeof(struct dhcp6_option))
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#ifdef INET6
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void dhcp6_printoptions(void);
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int dhcp6_addrexists(const struct ipv6_addr *);
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int dhcp6_find_delegates(struct interface *);
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int dhcp6_start(struct interface *, enum DH6S);
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ssize_t dhcp6_env(char **, const char *, const struct interface *,
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const struct dhcp6_message *, ssize_t);
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void dhcp6_free(struct interface *);
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void dhcp6_handleifa(int, const char *, const struct in6_addr *addr, int);
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void dhcp6_drop(struct interface *, const char *);
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#else
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#define dhcp6_printoptions()
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#define dhcp6_addrexists(a)
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#define dhcp6_find_delegates(a);
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#define dhcp6_start(a, b) 0
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#define dhcp6_env(a, b, c, d, e)
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#define dhcp6_free(a)
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#define dhcp6_drop(a, b)
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#endif
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#endif
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