Differential D22012 Diff 97318 contrib/dhcpcd/src/dhcpcd.h

Changeset View

Standalone View

contrib/dhcpcd/src/dhcpcd.h

This file was added.

				/* SPDX-License-Identifier: BSD-2-Clause */
				/*
				* dhcpcd - DHCP client daemon
				* Copyright (c) 2006-2019 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 DHCPCD_H
				#define DHCPCD_H

				#include <sys/socket.h>
				#include <net/if.h>

				#include "config.h"
				#ifdef HAVE_SYS_QUEUE_H
				#include <sys/queue.h>
				#endif

				#include "defs.h"
				#include "control.h"
				#include "if-options.h"

				#define HWADDR_LEN 20
				#define IF_SSIDLEN 32
				#define PROFILE_LEN 64
				#define SECRET_LEN 64

				#define IF_INACTIVE 0
				#define IF_ACTIVE 1
				#define IF_ACTIVE_USER 2

				#define LINK_UP 1
				#define LINK_UNKNOWN 0
				#define LINK_DOWN -1
				#define LINK_DOWN_IFFUP -2

				#define IF_DATA_IPV4 0
				#define IF_DATA_ARP 1
				#define IF_DATA_IPV4LL 2
				#define IF_DATA_DHCP 3
				#define IF_DATA_IPV6 4
				#define IF_DATA_IPV6ND 5
				#define IF_DATA_DHCP6 6
				#define IF_DATA_MAX 7

				/* If the interface does not support carrier status (ie PPP),
				* dhcpcd can poll it for the relevant flags periodically */
				#define IF_POLL_UP 100 /* milliseconds */

				#ifdef __QNX__
				/* QNX carries defines for, but does not actually support PF_LINK */
				#undef IFLR_ACTIVE
				#endif

				struct interface {
				struct dhcpcd_ctx *ctx;
				TAILQ_ENTRY(interface) next;
				char name[IF_NAMESIZE];
				unsigned int index;
				unsigned int active;
				unsigned int flags;
				sa_family_t family;
				unsigned char hwaddr[HWADDR_LEN];
				uint8_t hwlen;
				unsigned short vlanid;
				unsigned int metric;
				int carrier;
				bool wireless;
				uint8_t ssid[IF_SSIDLEN];
				unsigned int ssid_len;

				char profile[PROFILE_LEN];
				struct if_options *options;
				void *if_data[IF_DATA_MAX];
				};
				TAILQ_HEAD(if_head, interface);


				#ifdef INET6
				/* dhcpcd requires CMSG_SPACE to evaluate to a compile time constant. */
				#if defined(__QNX) \|\| \
				(defined(__NetBSD_Version__) && __NetBSD_Version__ < 600000000)
				#undef CMSG_SPACE
				#endif

				#ifndef ALIGNBYTES
				#define ALIGNBYTES (sizeof(int) - 1)
				#endif
				#ifndef ALIGN
				#define ALIGN(p) (((unsigned int)(p) + ALIGNBYTES) & ~ALIGNBYTES)
				#endif
				#ifndef CMSG_SPACE
				#define CMSG_SPACE(len) (ALIGN(sizeof(struct cmsghdr)) + ALIGN(len))
				#endif

				#define IP6BUFLEN (CMSG_SPACE(sizeof(struct in6_pktinfo)) + \
				CMSG_SPACE(sizeof(int)))
				#endif

				struct dhcpcd_ctx {
				char pidfile[sizeof(PIDFILE) + IF_NAMESIZE + 1];
				const char *cffile;
				unsigned long long options;
				char *logfile;
				int argc;
				char **argv;
				int ifac; /* allowed interfaces */
				char *ifav; / allowed interfaces */
				int ifdc; /* denied interfaces */
				char *ifdv; / denied interfaces */
				int ifc; /* listed interfaces */
				char *ifv; / listed interfaces */
				int ifcc; /* configured interfaces */
				char *ifcv; / configured interfaces */
				unsigned char *duid;
				size_t duid_len;
				struct if_head *ifaces;

				rb_tree_t routes; /* our routes */
				#ifdef RT_FREE_ROUTE_TABLE
				rb_tree_t froutes; /* free routes for re-use */
				#endif
				size_t rt_order; /* route order storage */

				int pf_inet_fd;
				void *priv;
				int link_fd;
				#ifndef SMALL
				int link_rcvbuf;
				#endif
				int seq; /* route message sequence no */
				int sseq; /* successful seq no sent */

				#ifdef USE_SIGNALS
				sigset_t sigset;
				#endif
				struct eloop *eloop;

				#ifdef HAVE_OPEN_MEMSTREAM
				FILE *script_fp;
				#endif
				char *script_buf;
				size_t script_buflen;
				char **script_env;
				size_t script_envlen;

				int control_fd;
				int control_unpriv_fd;
				struct fd_list_head control_fds;
				char control_sock[sizeof(CONTROLSOCKET) + IF_NAMESIZE];
				gid_t control_group;

				/* DHCP Enterprise options, RFC3925 */
				struct dhcp_opt *vivso;
				size_t vivso_len;

				char randomstate; / original state */

				#ifdef INET
				struct dhcp_opt *dhcp_opts;
				size_t dhcp_opts_len;

				int udp_fd;

				/* Our aggregate option buffer.
				* We ONLY use this when options are split, which for most purposes is
				* practically never. See RFC3396 for details. */
				uint8_t *opt_buffer;
				size_t opt_buffer_len;
				#endif
				#ifdef INET6
				uint8_t *secret;
				size_t secret_len;

				#ifndef __sun
				int nd_fd;
				#endif
				struct ra_head *ra_routers;

				int dhcp6_fd;

				struct dhcp_opt *nd_opts;
				size_t nd_opts_len;
				#ifdef DHCP6
				struct dhcp_opt *dhcp6_opts;
				size_t dhcp6_opts_len;
				#endif

				#ifndef __linux__
				int ra_global;
				#endif
				#endif /* INET6 */

				#ifdef PLUGIN_DEV
				char *dev_load;
				int dev_fd;
				struct dev *dev;
				void *dev_handle;
				#endif
				};

				#ifdef USE_SIGNALS
				extern const int dhcpcd_signals[];
				extern const size_t dhcpcd_signals_len;
				#endif

				int dhcpcd_ifafwaiting(const struct interface *);
				int dhcpcd_afwaiting(const struct dhcpcd_ctx *);
				pid_t dhcpcd_daemonise(struct dhcpcd_ctx *);

				void dhcpcd_linkoverflow(struct dhcpcd_ctx *);
				int dhcpcd_handleargs(struct dhcpcd_ctx , struct fd_list , int, char **);
				void dhcpcd_handlecarrier(struct dhcpcd_ctx , int, unsigned int, const char );
				int dhcpcd_handleinterface(void , int, const char );
				void dhcpcd_handlehwaddr(struct dhcpcd_ctx , const char ,
				const void *, uint8_t);
				void dhcpcd_dropinterface(struct interface , const char );
				int dhcpcd_selectprofile(struct interface , const char );

				void dhcpcd_startinterface(void *);
				void dhcpcd_activateinterface(struct interface *, unsigned long long);

				#endif