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0b73a763f3
Originally, only a host name was used to associate a DHCPv6 request with a specific IPv6 address. Further testing demonstrates that this is an unreliable method and, instead, a client-id or DUID needs to be used. According to DHCPv6 standards, this id can be a duid-LLT, duid-LL, or duid-UUID even though dnsmasq will accept almost any text string. Although validity checking of a specified string makes sure it is hexadecimal notation with bytes separated by colons, there is no rigorous check to make sure it meets the standard. Documentation and schemas have been updated. Signed-off-by: Gene Czarcinski <gene@czarc.net> Signed-off-by: Laine Stump <laine@laine.org>
122 lines
3.9 KiB
C
122 lines
3.9 KiB
C
/*
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* virdnsmasq.h: Helper APIs for managing dnsmasq
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*
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* Copyright (C) 2007-2012 Red Hat, Inc.
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* Copyright (C) 2010 Satoru SATOH <satoru.satoh@gmail.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library. If not, see
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* <http://www.gnu.org/licenses/>.
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*
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* based on iptables.h
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*/
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#ifndef __DNSMASQ_H__
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# define __DNSMASQ_H__
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# include "virobject.h"
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# include "virsocketaddr.h"
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typedef struct
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{
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/*
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* Each entry holds a string, "<mac_addr>,<hostname>,<ip_addr>" such as
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* "01:23:45:67:89:0a,foo,10.0.0.3".
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*/
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char *host;
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} dnsmasqDhcpHost;
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typedef struct
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{
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unsigned int nhosts;
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dnsmasqDhcpHost *hosts;
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char *path; /* Absolute path of dnsmasq's hostsfile. */
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} dnsmasqHostsfile;
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typedef struct
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{
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unsigned int nhostnames;
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char *ip;
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char **hostnames;
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} dnsmasqAddnHost;
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typedef struct
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{
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unsigned int nhosts;
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dnsmasqAddnHost *hosts;
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char *path; /* Absolute path of dnsmasq's hostsfile. */
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} dnsmasqAddnHostsfile;
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typedef struct
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{
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char *config_dir;
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dnsmasqHostsfile *hostsfile;
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dnsmasqAddnHostsfile *addnhostsfile;
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} dnsmasqContext;
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typedef enum {
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DNSMASQ_CAPS_BIND_DYNAMIC = 0, /* support for --bind-dynamic */
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DNSMASQ_CAPS_BINDTODEVICE = 1, /* uses SO_BINDTODEVICE for --bind-interfaces */
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DNSMASQ_CAPS_LAST, /* this must always be the last item */
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} dnsmasqCapsFlags;
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typedef struct _dnsmasqCaps dnsmasqCaps;
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typedef dnsmasqCaps *dnsmasqCapsPtr;
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dnsmasqContext * dnsmasqContextNew(const char *network_name,
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const char *config_dir);
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void dnsmasqContextFree(dnsmasqContext *ctx);
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int dnsmasqAddDhcpHost(dnsmasqContext *ctx,
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const char *mac,
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virSocketAddr *ip,
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const char *name,
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const char *id,
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bool ipv6);
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int dnsmasqAddHost(dnsmasqContext *ctx,
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virSocketAddr *ip,
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const char *name);
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int dnsmasqSave(const dnsmasqContext *ctx);
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int dnsmasqDelete(const dnsmasqContext *ctx);
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int dnsmasqReload(pid_t pid);
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dnsmasqCapsPtr dnsmasqCapsNewFromBuffer(const char *buf,
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const char *binaryPath);
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dnsmasqCapsPtr dnsmasqCapsNewFromFile(const char *dataPath,
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const char *binaryPath);
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dnsmasqCapsPtr dnsmasqCapsNewFromBinary(const char *binaryPath);
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int dnsmasqCapsRefresh(dnsmasqCapsPtr *caps, const char *binaryPath);
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bool dnsmasqCapsGet(dnsmasqCapsPtr caps, dnsmasqCapsFlags flag);
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const char *dnsmasqCapsGetBinaryPath(dnsmasqCapsPtr caps);
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unsigned long dnsmasqCapsGetVersion(dnsmasqCapsPtr caps);
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# define DNSMASQ_DHCPv6_MAJOR_REQD 2
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# define DNSMASQ_DHCPv6_MINOR_REQD 64
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# define DNSMASQ_RA_MAJOR_REQD 2
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# define DNSMASQ_RA_MINOR_REQD 64
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# define DNSMASQ_DHCPv6_SUPPORT(CAPS) \
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(dnsmasqCapsGetVersion(CAPS) >= \
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(DNSMASQ_DHCPv6_MAJOR_REQD * 1000000) + \
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(DNSMASQ_DHCPv6_MINOR_REQD * 1000))
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# define DNSMASQ_RA_SUPPORT(CAPS) \
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(dnsmasqCapsGetVersion(CAPS) >= \
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(DNSMASQ_RA_MAJOR_REQD * 1000000) + \
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(DNSMASQ_RA_MINOR_REQD * 1000))
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#endif /* __DNSMASQ_H__ */
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