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https://github.com/rsmarples/dhcpcd.git
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80e9033d45
dhcpcd will actively work on. This will allow dhcpcd to move addresses around interfaces much more easily as well.
199 lines
5.1 KiB
C
199 lines
5.1 KiB
C
/*
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* dhcpcd - DHCP client daemon
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* Copyright (c) 2006-2015 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 DHCPCD_H
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#define DHCPCD_H
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#include <sys/socket.h>
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#include <net/if.h>
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#include "config.h"
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#ifdef HAVE_SYS_QUEUE_H
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#include <sys/queue.h>
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#endif
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#include "defs.h"
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#include "control.h"
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#include "if-options.h"
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#define HWADDR_LEN 20
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#define IF_SSIDSIZE 33
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#define PROFILE_LEN 64
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#define SECRET_LEN 64
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#define LINK_UP 1
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#define LINK_UNKNOWN 0
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#define LINK_DOWN -1
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#define IF_DATA_IPV4 0
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#define IF_DATA_ARP 1
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#define IF_DATA_IPV4LL 2
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#define IF_DATA_DHCP 3
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#define IF_DATA_IPV6 4
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#define IF_DATA_IPV6ND 5
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#define IF_DATA_DHCP6 6
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#define IF_DATA_MAX 7
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/* If the interface does not support carrier status (ie PPP),
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* dhcpcd can poll it for the relevant flags periodically */
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#define IF_POLL_UP 100 /* milliseconds */
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#ifdef __QNX__
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/* QNX carries defines for, but does not actually support PF_LINK */
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#undef IFLR_ACTIVE
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#endif
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struct interface {
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struct dhcpcd_ctx *ctx;
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TAILQ_ENTRY(interface) next;
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char name[IF_NAMESIZE];
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#ifdef __linux__
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char alias[IF_NAMESIZE];
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#endif
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unsigned int index;
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int active;
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unsigned int flags;
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sa_family_t family;
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unsigned char hwaddr[HWADDR_LEN];
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uint8_t hwlen;
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unsigned int metric;
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int carrier;
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int wireless;
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uint8_t ssid[IF_SSIDSIZE];
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unsigned int ssid_len;
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char profile[PROFILE_LEN];
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struct if_options *options;
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void *if_data[IF_DATA_MAX];
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};
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TAILQ_HEAD(if_head, interface);
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struct dhcpcd_ctx {
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int pid_fd;
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char pidfile[sizeof(PIDFILE) + IF_NAMESIZE + 1];
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const char *cffile;
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unsigned long long options;
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char *logfile;
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int log_fd;
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int argc;
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char **argv;
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int ifac; /* allowed interfaces */
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char **ifav; /* allowed interfaces */
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int ifdc; /* denied interfaces */
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char **ifdv; /* denied interfaces */
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int ifc; /* listed interfaces */
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char **ifv; /* listed interfaces */
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int ifcc; /* configured interfaces */
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char **ifcv; /* configured interfaces */
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unsigned char *duid;
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size_t duid_len;
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struct if_head *ifaces;
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int pf_inet_fd;
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#if defined(INET6) && defined(BSD)
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int pf_inet6_fd;
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#endif
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#ifdef IFLR_ACTIVE
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int pf_link_fd;
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#endif
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int link_fd;
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#ifdef USE_SIGNALS
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sigset_t sigset;
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#endif
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struct eloop *eloop;
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int control_fd;
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int control_unpriv_fd;
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struct fd_list_head control_fds;
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char control_sock[sizeof(CONTROLSOCKET) + IF_NAMESIZE];
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gid_t control_group;
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/* DHCP Enterprise options, RFC3925 */
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struct dhcp_opt *vivso;
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size_t vivso_len;
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char *randomstate; /* original state */
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#ifdef INET
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struct dhcp_opt *dhcp_opts;
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size_t dhcp_opts_len;
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struct rt_head *ipv4_routes;
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struct rt_head *ipv4_kroutes;
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int udp_fd;
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uint8_t *packet;
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/* Our aggregate option buffer.
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* We ONLY use this when options are split, which for most purposes is
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* practically never. See RFC3396 for details. */
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uint8_t *opt_buffer;
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#endif
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#ifdef INET6
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unsigned char secret[SECRET_LEN];
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size_t secret_len;
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struct dhcp_opt *nd_opts;
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size_t nd_opts_len;
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struct dhcp_opt *dhcp6_opts;
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size_t dhcp6_opts_len;
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struct ipv6_ctx *ipv6;
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#ifndef __linux__
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int ra_global;
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#endif
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#endif /* INET6 */
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#ifdef PLUGIN_DEV
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char *dev_load;
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int dev_fd;
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struct dev *dev;
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void *dev_handle;
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#endif
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};
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#ifdef USE_SIGNALS
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extern const int dhcpcd_signals[];
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extern const size_t dhcpcd_signals_len;
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#endif
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int dhcpcd_ifafwaiting(const struct interface *);
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int dhcpcd_afwaiting(const struct dhcpcd_ctx *);
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pid_t dhcpcd_daemonise(struct dhcpcd_ctx *);
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int dhcpcd_handleargs(struct dhcpcd_ctx *, struct fd_list *, int, char **);
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void dhcpcd_handlecarrier(struct dhcpcd_ctx *, int, unsigned int, const char *);
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int dhcpcd_handleinterface(void *, int, const char *);
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void dhcpcd_handlehwaddr(struct dhcpcd_ctx *, const char *,
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const unsigned char *, uint8_t);
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void dhcpcd_dropinterface(struct interface *, const char *);
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int dhcpcd_selectprofile(struct interface *, const char *);
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void dhcpcd_startinterface(void *);
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void dhcpcd_initstate(struct interface *, unsigned long long);
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#endif
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