it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 dated June, 1991, or
(at your option) version 3 dated 29 June, 2007.
-
+
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
-
+
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#endif
};
-static int dhcp6_maybe_relay(struct state *state, void *inbuff, size_t sz,
+static int dhcp6_maybe_relay(struct state *state, void *inbuff, size_t sz,
struct in6_addr *client_addr, int is_unicast, time_t now);
static int dhcp6_no_relay(struct state *state, int msg_type, void *inbuff, size_t sz, int is_unicast, time_t now);
static void log6_opts(int nest, unsigned int xid, void *start_opts, void *end_opts);
static void mark_context_used(struct state *state, struct in6_addr *addr);
static void mark_config_used(struct dhcp_context *context, struct in6_addr *addr);
static int check_address(struct state *state, struct in6_addr *addr);
-static void add_address(struct state *state, struct dhcp_context *context, unsigned int lease_time, void *ia_option,
+static void add_address(struct state *state, struct dhcp_context *context, unsigned int lease_time, void *ia_option,
unsigned int *min_time, struct in6_addr *addr, time_t now);
static void update_leases(struct state *state, struct dhcp_context *context, struct in6_addr *addr, unsigned int lease_time, time_t now);
static int add_local_addrs(struct dhcp_context *context);
static struct dhcp_netid *add_options(struct state *state, int do_refresh);
-static void calculate_times(struct dhcp_context *context, unsigned int *min_time, unsigned int *valid_timep,
+static void calculate_times(struct dhcp_context *context, unsigned int *min_time, unsigned int *valid_timep,
unsigned int *preferred_timep, unsigned int lease_time);
#define opt6_len(opt) ((int)(opt6_uint(opt, -2, 2)))
#define opt6_user_vendor_ptr(opt, i) ((void *)&(((unsigned char *)(opt))[2+(i)]))
#define opt6_user_vendor_len(opt) ((int)(opt6_uint(opt, -4, 2)))
#define opt6_user_vendor_next(opt, end) (opt6_next(((void *) opt) - 2, end))
-
+
unsigned short dhcp6_reply(struct dhcp_context *context, int interface, char *iface_name,
struct in6_addr *fallback, struct in6_addr *ll_addr, struct in6_addr *ula_addr,
struct dhcp_vendor *vendor;
int msg_type;
struct state state;
-
+
if (sz <= 4)
return 0;
-
+
msg_type = *((unsigned char *)daemon->dhcp_packet.iov_base);
-
+
/* Mark these so we only match each at most once, to avoid tangled linked lists */
for (vendor = daemon->dhcp_vendors; vendor; vendor = vendor->next)
vendor->netid.next = &vendor->netid;
-
+
save_counter(0);
state.context = context;
state.interface = interface;
state.tags = NULL;
state.link_address = NULL;
- if (dhcp6_maybe_relay(&state, daemon->dhcp_packet.iov_base, sz, client_addr,
+ if (dhcp6_maybe_relay(&state, daemon->dhcp_packet.iov_base, sz, client_addr,
IN6_IS_ADDR_MULTICAST(client_addr), now))
return msg_type == DHCP6RELAYFORW ? DHCPV6_SERVER_PORT : DHCPV6_CLIENT_PORT;
}
/* This cost me blood to write, it will probably cost you blood to understand - srk. */
-static int dhcp6_maybe_relay(struct state *state, void *inbuff, size_t sz,
+static int dhcp6_maybe_relay(struct state *state, void *inbuff, size_t sz,
struct in6_addr *client_addr, int is_unicast, time_t now)
{
void *end = inbuff + sz;
/* if not an encaplsulated relayed message, just do the stuff */
if (msg_type != DHCP6RELAYFORW)
{
- /* if link_address != NULL if points to the link address field of the
+ /* if link_address != NULL if points to the link address field of the
innermost nested RELAYFORW message, which is where we find the
address of the network on which we can allocate an address.
- Recalculate the available contexts using that information.
+ Recalculate the available contexts using that information.
- link_address == NULL means there's no relay in use, so we try and find the client's
+ link_address == NULL means there's no relay in use, so we try and find the client's
MAC address from the local ND cache. */
-
+
if (!state->link_address)
get_client_mac(client_addr, state->interface, state->mac, &state->mac_len, &state->mac_type);
else
{
struct dhcp_context *c;
state->context = NULL;
-
+
if (!IN6_IS_ADDR_LOOPBACK(state->link_address) &&
!IN6_IS_ADDR_LINKLOCAL(state->link_address) &&
!IN6_IS_ADDR_MULTICAST(state->link_address))
c->current = state->context;
state->context = c;
}
-
+
if (!state->context)
{
- inet_ntop(AF_INET6, state->link_address, daemon->addrbuff, ADDRSTRLEN);
- my_syslog(MS_DHCP | LOG_WARNING,
+ inet_ntop(AF_INET6, state->link_address, daemon->addrbuff, ADDRSTRLEN);
+ my_syslog(MS_DHCP | LOG_WARNING,
_("no address range available for DHCPv6 request from relay at %s"),
daemon->addrbuff);
return 0;
}
}
-
+
if (!state->context)
{
- my_syslog(MS_DHCP | LOG_WARNING,
+ my_syslog(MS_DHCP | LOG_WARNING,
_("no address range available for DHCPv6 request via %s"), state->iface_name);
return 0;
}
which is 1 + 1 + 16 + 16 + 2 + 2 = 38 */
if (sz < 38)
return 0;
-
+
/* copy header stuff into reply message and set type to reply */
if (!(outmsgtypep = put_opt6(inbuff, 34)))
return 0;
for (vendor = daemon->dhcp_vendors; vendor; vendor = vendor->next)
{
int mopt;
-
+
if (vendor->match_type == MATCH_SUBSCRIBER)
mopt = OPTION6_SUBSCRIBER_ID;
else if (vendor->match_type == MATCH_REMOTE)
- mopt = OPTION6_REMOTE_ID;
+ mopt = OPTION6_REMOTE_ID;
else
continue;
break;
}
}
-
+
/* RFC-6939 */
if ((opt = opt6_find(opts, end, OPTION6_CLIENT_MAC, 3)))
{
+ if (opt6_len(opt) - 2 > DHCP_CHADDR_MAX) {
+ return 0;
+ }
state->mac_type = opt6_uint(opt, 0, 2);
state->mac_len = opt6_len(opt) - 2;
memcpy(&state->mac[0], opt6_ptr(opt, 2), state->mac_len);
}
-
+
for (opt = opts; opt; opt = opt6_next(opt, end))
{
int o = new_opt6(opt6_type(opt));
{
struct in6_addr align;
/* the packet data is unaligned, copy to aligned storage */
- memcpy(&align, inbuff + 2, IN6ADDRSZ);
+ memcpy(&align, inbuff + 2, IN6ADDRSZ);
state->link_address = &align;
- /* zero is_unicast since that is now known to refer to the
+ /* zero is_unicast since that is now known to refer to the
relayed packet, not the original sent by the client */
if (!dhcp6_maybe_relay(state, opt6_ptr(opt, 0), opt6_len(opt), client_addr, 0, now))
return 0;
}
else if (opt6_type(opt) != OPTION6_CLIENT_MAC)
put_opt6(opt6_ptr(opt, 0), opt6_len(opt));
- end_opt6(o);
+ end_opt6(o);
}
-
+
return 1;
}
/* set tag with name == interface */
iface_id.net = state->iface_name;
iface_id.next = state->tags;
- state->tags = &iface_id;
+ state->tags = &iface_id;
/* set tag "dhcpv6" */
v6_id.net = "dhcpv6";
return 0;
start_opts = save_counter(-1);
state->xid = outmsgtypep[3] | outmsgtypep[2] << 8 | outmsgtypep[1] << 16;
-
- /* We're going to be linking tags from all context we use.
+
+ /* We're going to be linking tags from all context we use.
mark them as unused so we don't link one twice and break the list */
for (context_tmp = state->context; context_tmp; context_tmp = context_tmp->current)
{
if (option_bool(OPT_LOG_OPTS))
{
- inet_ntop(AF_INET6, &context_tmp->start6, daemon->dhcp_buff, ADDRSTRLEN);
- inet_ntop(AF_INET6, &context_tmp->end6, daemon->dhcp_buff2, ADDRSTRLEN);
+ inet_ntop(AF_INET6, &context_tmp->start6, daemon->dhcp_buff, ADDRSTRLEN);
+ inet_ntop(AF_INET6, &context_tmp->end6, daemon->dhcp_buff2, ADDRSTRLEN);
if (context_tmp->flags & (CONTEXT_STATIC))
my_syslog(MS_DHCP | LOG_INFO, _("%u available DHCPv6 subnet: %s/%d"),
state->xid, daemon->dhcp_buff, context_tmp->prefix);
else
- my_syslog(MS_DHCP | LOG_INFO, _("%u available DHCP range: %s -- %s"),
+ my_syslog(MS_DHCP | LOG_INFO, _("%u available DHCP range: %s -- %s"),
state->xid, daemon->dhcp_buff, daemon->dhcp_buff2);
}
}
opt6_len(opt) != daemon->duid_len ||
memcmp(opt6_ptr(opt, 0), daemon->duid, daemon->duid_len) != 0))
return 0;
-
+
o = new_opt6(OPTION6_SERVER_ID);
put_opt6(daemon->duid, daemon->duid_len);
end_opt6(o);
if (is_unicast &&
(msg_type == DHCP6REQUEST || msg_type == DHCP6RENEW || msg_type == DHCP6RELEASE || msg_type == DHCP6DECLINE))
-
- {
+
+ {
*outmsgtypep = DHCP6REPLY;
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6USEMULTI);
for (vendor = daemon->dhcp_vendors; vendor; vendor = vendor->next)
{
int mopt;
-
+
if (vendor->match_type == MATCH_VENDOR)
mopt = OPTION6_VENDOR_CLASS;
else if (vendor->match_type == MATCH_USER)
- mopt = OPTION6_USER_CLASS;
+ mopt = OPTION6_USER_CLASS;
else
continue;
{
void *enc_opt, *enc_end = opt6_ptr(opt, opt6_len(opt));
int offset = 0;
-
+
if (mopt == OPTION6_VENDOR_CLASS)
{
if (opt6_len(opt) < 4)
continue;
-
+
if (vendor->enterprise != opt6_uint(opt, 0, 4))
continue;
-
+
offset = 4;
}
-
+
/* Note that format if user/vendor classes is different to DHCP options - no option types. */
for (enc_opt = opt6_ptr(opt, offset); enc_opt; enc_opt = opt6_user_vendor_next(enc_opt, enc_end))
for (i = 0; i <= (opt6_user_vendor_len(enc_opt) - vendor->len); i++)
if (option_bool(OPT_LOG_OPTS) && (opt = opt6_find(state->packet_options, state->end, OPTION6_VENDOR_CLASS, 4)))
my_syslog(MS_DHCP | LOG_INFO, _("%u vendor class: %u"), state->xid, opt6_uint(opt, 0, 4));
-
+
/* dhcp-match. If we have hex-and-wildcards, look for a left-anchored match.
- Otherwise assume the option is an array, and look for a matching element.
- If no data given, existance of the option is enough. This code handles
+ Otherwise assume the option is an array, and look for a matching element.
+ If no data given, existance of the option is enough. This code handles
V-I opts too. */
for (opt_cfg = daemon->dhcp_match6; opt_cfg; opt_cfg = opt_cfg->next)
{
int match = 0;
-
+
if (opt_cfg->flags & DHOPT_RFC3925)
{
for (opt = opt6_find(state->packet_options, state->end, OPTION6_VENDOR_OPTS, 4);
{
void *vopt;
void *vend = opt6_ptr(opt, opt6_len(opt));
-
+
for (vopt = opt6_find(opt6_ptr(opt, 4), vend, opt_cfg->opt, 0);
vopt;
vopt = opt6_find(opt6_next(vopt, vend), vend, opt_cfg->opt, 0))
{
if (!(opt = opt6_find(state->packet_options, state->end, opt_cfg->opt, 1)))
continue;
-
+
match = match_bytes(opt_cfg, opt6_ptr(opt, 0), opt6_len(opt));
- }
-
+ }
+
if (match)
{
opt_cfg->netid->next = state->tags;
state->tags = &mac_opt->netid;
}
}
-
+
if ((opt = opt6_find(state->packet_options, state->end, OPTION6_FQDN, 1)))
{
/* RFC4704 refers */
int len = opt6_len(opt) - 1;
-
+
state->fqdn_flags = opt6_uint(opt, 0, 1);
-
+
/* Always force update, since the client has no way to do it itself. */
if (!option_bool(OPT_FQDN_UPDATE) && !(state->fqdn_flags & 0x01))
state->fqdn_flags |= 0x03;
-
+
state->fqdn_flags &= ~0x04;
if (len != 0 && len < 255)
{
unsigned char *pp, *op = opt6_ptr(opt, 1);
char *pq = daemon->dhcp_buff;
-
+
pp = op;
while (*op != 0 && ((op + (*op)) - pp) < len)
{
op += (*op)+1;
*(pq++) = '.';
}
-
+
if (pq != daemon->dhcp_buff)
pq--;
*pq = 0;
-
+
if (legal_hostname(daemon->dhcp_buff))
{
state->client_hostname = daemon->dhcp_buff;
if (option_bool(OPT_LOG_OPTS))
- my_syslog(MS_DHCP | LOG_INFO, _("%u client provides name: %s"), state->xid, state->client_hostname);
+ my_syslog(MS_DHCP | LOG_INFO, _("%u client provides name: %s"), state->xid, state->client_hostname);
}
}
- }
-
+ }
+
if (state->clid)
{
config = find_config(daemon->dhcp_conf, state->context, state->clid, state->clid_len, state->mac, state->mac_len, state->mac_type, NULL);
-
+
if (have_config(config, CONFIG_NAME))
{
state->hostname = config->hostname;
else if (state->client_hostname)
{
state->domain = strip_hostname(state->client_hostname);
-
+
if (strlen(state->client_hostname) != 0)
{
state->hostname = state->client_hostname;
if (!config)
{
- /* Search again now we have a hostname.
+ /* Search again now we have a hostname.
Only accept configs without CLID here, (it won't match)
to avoid impersonation by name. */
struct dhcp_config *new = find_config(daemon->dhcp_conf, state->context, NULL, 0, NULL, 0, 0, state->hostname);
if (config)
{
struct dhcp_netid_list *list;
-
+
for (list = config->netid; list; list = list->next)
{
list->list->next = state->tags;
if (daemon->prefix_classes && (msg_type == DHCP6SOLICIT || msg_type == DHCP6REQUEST))
{
void *oro;
-
+
if ((oro = opt6_find(state->packet_options, state->end, OPTION6_ORO, 0)))
for (i = 0; i < opt6_len(oro) - 1; i += 2)
if (opt6_uint(oro, i, 2) == OPTION6_PREFIX_CLASS)
dump_all_prefix_classes = 1;
break;
}
-
+
if (msg_type != DHCP6SOLICIT || dump_all_prefix_classes)
/* Add the tags associated with prefix classes so we can use the DHCP ranges.
Not done for SOLICIT as we add them one-at-time. */
p->tag.next = state->tags;
state->tags = &p->tag;
}
- }
+ }
#endif
tagif = run_tag_if(state->tags);
-
+
/* if all the netids in the ignore list are present, ignore this client */
if (daemon->dhcp_ignore)
{
struct dhcp_netid_list *id_list;
-
+
for (id_list = daemon->dhcp_ignore; id_list; id_list = id_list->next)
if (match_netid(id_list->list, tagif, 0))
ignore = 1;
}
-
+
/* if all the netids in the ignore_name list are present, ignore client-supplied name */
if (!state->hostname_auth)
{
struct dhcp_netid_list *id_list;
-
+
for (id_list = daemon->dhcp_ignore_names; id_list; id_list = id_list->next)
if ((!id_list->list) || match_netid(id_list->list, tagif, 0))
break;
if (id_list)
state->hostname = NULL;
}
-
+
switch (msg_type)
{
default:
return 0;
-
-
+
+
case DHCP6SOLICIT:
{
int address_assigned = 0;
/* tags without all prefix-class tags */
struct dhcp_netid *solicit_tags;
struct dhcp_context *c;
-
+
*outmsgtypep = DHCP6ADVERTISE;
-
+
if (opt6_find(state->packet_options, state->end, OPTION6_RAPID_COMMIT, 0))
{
*outmsgtypep = DHCP6REPLY;
o = new_opt6(OPTION6_RAPID_COMMIT);
end_opt6(o);
}
-
+
log6_quiet(state, "DHCPSOLICIT", NULL, ignore ? _("ignored") : NULL);
request_no_address:
solicit_tags = tagif;
-
+
if (ignore)
return 0;
-
+
/* reset USED bits in leases */
lease6_reset();
c->flags &= ~CONTEXT_CONF_USED;
for (opt = state->packet_options; opt; opt = opt6_next(opt, state->end))
- {
+ {
void *ia_option, *ia_end;
unsigned int min_time = 0xffffffff;
int t1cntr;
if (!check_ia(state, opt, &ia_end, &ia_option))
continue;
-
+
/* reset USED bits in contexts - one address per prefix per IAID */
for (c = state->context; c; c = c->current)
c->flags &= ~CONTEXT_USED;
{
void *prefix_opt;
int prefix_class;
-
+
if (dump_all_prefix_classes)
/* OPTION_PREFIX_CLASS in ORO, send addresses in all prefix classes */
plain_range = 0;
- else
- {
+ else
+ {
if ((prefix_opt = opt6_find(opt6_ptr(opt, 12), ia_end, OPTION6_PREFIX_CLASS, 2)))
{
-
+
prefix_class = opt6_uint(prefix_opt, 0, 2);
-
+
for (p = daemon->prefix_classes; p ; p = p->next)
if (p->class == prefix_class)
break;
-
+
if (!p)
my_syslog(MS_DHCP | LOG_WARNING, _("unknown prefix-class %d"), prefix_class);
else
if (match_netid(&p->tag, solicit_tags, 1))
break;
}
-
+
if (p)
{
plain_range = 0;
}
if (p && option_bool(OPT_LOG_OPTS))
- my_syslog(MS_DHCP | LOG_INFO, "%u prefix class %d tag:%s", state->xid, p->class, p->tag.net);
+ my_syslog(MS_DHCP | LOG_INFO, "%u prefix class %d tag:%s", state->xid, p->class, p->tag.net);
}
}
#endif
for (ia_counter = 0; ia_option; ia_counter++, ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
req_addr = opt6_ptr(ia_option, 0);
-
+
if ((c = address6_valid(state->context, req_addr, solicit_tags, plain_range)))
{
lease_time = c->lease_time;
- /* If the client asks for an address on the same network as a configured address,
+ /* If the client asks for an address on the same network as a configured address,
offer the configured address instead, to make moving to newly-configured
addresses automatic. */
if (!(c->flags & CONTEXT_CONF_USED) && config_valid(config, c, &addr) && check_address(state, &addr))
continue; /* not an address we're allowed */
else if (!check_address(state, req_addr))
continue; /* address leased elsewhere */
-
+
/* add address to output packet */
#ifdef OPTION6_PREFIX_CLASS
if (dump_all_prefix_classes && state->ia_type == OPTION6_IA_NA)
state->send_prefix_class = prefix_class_from_context(c);
-#endif
+#endif
add_address(state, c, lease_time, ia_option, &min_time, req_addr, now);
mark_context_used(state, req_addr);
get_context_tag(state, c);
address_assigned = 1;
}
}
-
+
/* Suggest configured address(es) */
- for (c = state->context; c; c = c->current)
+ for (c = state->context; c; c = c->current)
if (!(c->flags & CONTEXT_CONF_USED) &&
match_netid(c->filter, solicit_tags, plain_range) &&
- config_valid(config, c, &addr) &&
+ config_valid(config, c, &addr) &&
check_address(state, &addr))
{
mark_config_used(state->context, &addr);
get_context_tag(state, c);
address_assigned = 1;
}
-
+
/* return addresses for existing leases */
ltmp = NULL;
while ((ltmp = lease6_find_by_client(ltmp, state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA, state->clid, state->clid_len, state->iaid)))
address_assigned = 1;
}
}
-
+
/* Return addresses for all valid contexts which don't yet have one */
while ((c = address6_allocate(state->context, state->clid, state->clid_len, state->ia_type == OPTION6_IA_TA,
state->iaid, ia_counter, solicit_tags, plain_range, &addr)))
get_context_tag(state, c);
address_assigned = 1;
}
-
+
if (address_assigned != 1)
{
/* If the server will not assign any addresses to any IAs in a
save_counter(o);
continue;
}
-
+
/* If the server cannot assign any addresses to an IA in the message
from the client, the server MUST include the IA in the Reply message
with no addresses in the IA and a Status Code option in the IA
put_opt6_string(_("address unavailable"));
end_opt6(o1);
}
-
+
end_ia(t1cntr, min_time, 0);
- end_opt6(o);
+ end_opt6(o);
}
- if (address_assigned)
+ if (address_assigned)
{
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6SUCCESS);
put_opt6_string(_("success"));
end_opt6(o1);
-
+
/* If --dhcp-authoritative is set, we can tell client not to wait for
other possible servers */
o = new_opt6(OPTION6_PREFERENCE);
tagif = add_options(state, 0);
}
else
- {
+ {
/* no address, return error */
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOADDRS);
break;
}
-
+
case DHCP6REQUEST:
{
int address_assigned = 0;
state->lease_allocate = 1;
log6_quiet(state, "DHCPREQUEST", NULL, ignore ? _("ignored") : NULL);
-
+
if (ignore)
return 0;
-
+
for (opt = state->packet_options; opt; opt = opt6_next(opt, state->end))
- {
+ {
void *ia_option, *ia_end;
unsigned int min_time = 0xffffffff;
int t1cntr;
-
+
if (!check_ia(state, opt, &ia_end, &ia_option))
continue;
/* If we get a request with a IA_*A without addresses, treat it exactly like
a SOLICT with rapid commit set. */
save_counter(start);
- goto request_no_address;
+ goto request_no_address;
}
o = build_ia(state, &t1cntr);
-
+
for (; ia_option; ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
struct in6_addr *req_addr = opt6_ptr(ia_option, 0);
unsigned int lease_time;
struct in6_addr addr;
int config_ok = 0;
-
+
if ((c = address6_valid(state->context, req_addr, tagif, 1)))
config_ok = config_valid(config, c, &addr) && IN6_ARE_ADDR_EQUAL(&addr, req_addr);
-
+
if ((dynamic = address6_available(state->context, req_addr, tagif, 1)) || c)
{
if (!dynamic && !config_ok)
put_opt6_short(DHCP6UNSPEC);
put_opt6_string(_("address in use"));
end_opt6(o1);
- }
- else
+ }
+ else
{
if (!dynamic)
dynamic = c;
lease_time = dynamic->lease_time;
-
+
if (config_ok && have_config(config, CONFIG_TIME))
lease_time = config->lease_time;
address_assigned = 1;
}
}
- else
+ else
{
/* requested address not on the correct link */
o1 = new_opt6(OPTION6_STATUS_CODE);
end_opt6(o1);
}
}
-
+
end_ia(t1cntr, min_time, 0);
- end_opt6(o);
+ end_opt6(o);
}
- if (address_assigned)
+ if (address_assigned)
{
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6SUCCESS);
end_opt6(o1);
}
else
- {
+ {
/* no address, return error */
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOADDRS);
tagif = add_options(state, 0);
break;
}
-
-
+
+
case DHCP6RENEW:
{
/* set reply message type */
*outmsgtypep = DHCP6REPLY;
-
+
log6_quiet(state, "DHCPRENEW", NULL, NULL);
for (opt = state->packet_options; opt; opt = opt6_next(opt, state->end))
void *ia_option, *ia_end;
unsigned int min_time = 0xffffffff;
int t1cntr, iacntr;
-
+
if (!check_ia(state, opt, &ia_end, &ia_option))
continue;
-
+
o = build_ia(state, &t1cntr);
- iacntr = save_counter(-1);
-
+ iacntr = save_counter(-1);
+
for (; ia_option; ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
struct dhcp_lease *lease = NULL;
unsigned int valid_time = opt6_uint(ia_option, 20, 4);
char *message = NULL;
struct dhcp_context *this_context;
-
+
if (!(lease = lease6_find(state->clid, state->clid_len,
- state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA,
+ state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA,
state->iaid, req_addr)))
{
/* If the server cannot find a client entry for the IA the server
to NoBinding in the Reply message. */
save_counter(iacntr);
t1cntr = 0;
-
+
log6_packet(state, "DHCPREPLY", req_addr, _("lease not found"));
-
+
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOBINDING);
put_opt6_string(_("no binding found"));
preferred_time = valid_time = 0;
break;
}
-
-
+
+
if ((this_context = address6_available(state->context, req_addr, tagif, 1)) ||
(this_context = address6_valid(state->context, req_addr, tagif, 1)))
{
unsigned int lease_time;
get_context_tag(state, this_context);
-
+
if (config_valid(config, this_context, &addr) && IN6_ARE_ADDR_EQUAL(&addr, req_addr) && have_config(config, CONFIG_TIME))
lease_time = config->lease_time;
- else
+ else
lease_time = this_context->lease_time;
-
- calculate_times(this_context, &min_time, &valid_time, &preferred_time, lease_time);
-
+
+ calculate_times(this_context, &min_time, &valid_time, &preferred_time, lease_time);
+
lease_set_expires(lease, valid_time, now);
/* Update MAC record in case it's new information. */
if (state->mac_len != 0)
char *addr_domain = get_domain6(req_addr);
if (!state->send_domain)
state->send_domain = addr_domain;
- lease_set_hostname(lease, state->hostname, state->hostname_auth, addr_domain, state->domain);
+ lease_set_hostname(lease, state->hostname, state->hostname_auth, addr_domain, state->domain);
message = state->hostname;
}
-
-
+
+
if (preferred_time == 0)
message = _("deprecated");
}
{
preferred_time = valid_time = 0;
message = _("address invalid");
- }
+ }
if (message && (message != state->hostname))
- log6_packet(state, "DHCPREPLY", req_addr, message);
+ log6_packet(state, "DHCPREPLY", req_addr, message);
else
log6_quiet(state, "DHCPREPLY", req_addr, message);
-
+
o1 = new_opt6(OPTION6_IAADDR);
put_opt6(req_addr, sizeof(*req_addr));
put_opt6_long(preferred_time);
put_opt6_long(valid_time);
end_opt6(o1);
}
-
+
end_ia(t1cntr, min_time, 1);
end_opt6(o);
}
-
+
tagif = add_options(state, 0);
break;
-
+
}
-
+
case DHCP6CONFIRM:
{
int good_addr = 0;
/* set reply message type */
*outmsgtypep = DHCP6REPLY;
-
+
log6_quiet(state, "DHCPCONFIRM", NULL, NULL);
-
+
for (opt = state->packet_options; opt; opt = opt6_next(opt, state->end))
{
void *ia_option, *ia_end;
-
+
for (check_ia(state, opt, &ia_end, &ia_option);
ia_option;
ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
struct in6_addr *req_addr = opt6_ptr(ia_option, 0);
-
+
if (!address6_valid(state->context, req_addr, tagif, 1))
{
o1 = new_opt6(OPTION6_STATUS_CODE);
good_addr = 1;
log6_quiet(state, "DHCPREPLY", req_addr, state->hostname);
}
- }
-
+ }
+
/* No addresses, no reply: RFC 3315 18.2.2 */
if (!good_addr)
return 0;
end_opt6(o1);
break;
}
-
+
case DHCP6IREQ:
{
/* We can't discriminate contexts based on address, as we don't know it.
}
/* Similarly, we can't determine domain from address, but if the FQDN is
- given in --dhcp-host, we can use that, and failing that we can use the
+ given in --dhcp-host, we can use that, and failing that we can use the
unqualified configured domain, if any. */
if (state->hostname_auth)
state->send_domain = state->domain;
tagif = add_options(state, 1);
break;
}
-
-
+
+
case DHCP6RELEASE:
{
/* set reply message type */
{
void *ia_option, *ia_end;
int made_ia = 0;
-
+
for (check_ia(state, opt, &ia_end, &ia_option);
ia_option;
- ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
+ ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
struct dhcp_lease *lease;
-
+
if ((lease = lease6_find(state->clid, state->clid_len, state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA,
state->iaid, opt6_ptr(ia_option, 0))))
lease_prune(lease, now);
if (state->ia_type == OPTION6_IA_NA)
{
put_opt6_long(0);
- put_opt6_long(0);
+ put_opt6_long(0);
}
made_ia = 1;
}
-
+
o1 = new_opt6(OPTION6_IAADDR);
put_opt6(opt6_ptr(ia_option, 0), IN6ADDRSZ);
put_opt6_long(0);
end_opt6(o1);
}
}
-
+
if (made_ia)
{
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOBINDING);
put_opt6_string(_("no binding found"));
end_opt6(o1);
-
+
end_opt6(o);
}
}
-
+
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6SUCCESS);
put_opt6_string(_("release received"));
end_opt6(o1);
-
+
break;
}
{
/* set reply message type */
*outmsgtypep = DHCP6REPLY;
-
+
log6_quiet(state, "DHCPDECLINE", NULL, NULL);
for (opt = state->packet_options; opt; opt = opt6_next(opt, state->end))
{
void *ia_option, *ia_end;
int made_ia = 0;
-
+
for (check_ia(state, opt, &ia_end, &ia_option);
ia_option;
- ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
+ ia_option = opt6_find(opt6_next(ia_option, ia_end), ia_end, OPTION6_IAADDR, 24))
{
struct dhcp_lease *lease;
struct in6_addr *addrp = opt6_ptr(ia_option, 0);
{
prettyprint_time(daemon->dhcp_buff3, DECLINE_BACKOFF);
inet_ntop(AF_INET6, addrp, daemon->addrbuff, ADDRSTRLEN);
- my_syslog(MS_DHCP | LOG_WARNING, _("disabling DHCP static address %s for %s"),
+ my_syslog(MS_DHCP | LOG_WARNING, _("disabling DHCP static address %s for %s"),
daemon->addrbuff, daemon->dhcp_buff3);
config->flags |= CONFIG_DECLINED;
config->decline_time = now;
/* make sure this host gets a different address next time. */
for (context_tmp = state->context; context_tmp; context_tmp = context_tmp->current)
context_tmp->addr_epoch++;
-
+
if ((lease = lease6_find(state->clid, state->clid_len, state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA,
state->iaid, opt6_ptr(ia_option, 0))))
lease_prune(lease, now);
if (state->ia_type == OPTION6_IA_NA)
{
put_opt6_long(0);
- put_opt6_long(0);
+ put_opt6_long(0);
}
made_ia = 1;
}
-
+
o1 = new_opt6(OPTION6_IAADDR);
put_opt6(opt6_ptr(ia_option, 0), IN6ADDRSZ);
put_opt6_long(0);
end_opt6(o1);
}
}
-
+
if (made_ia)
{
o1 = new_opt6(OPTION6_STATUS_CODE);
put_opt6_short(DHCP6NOBINDING);
put_opt6_string(_("no binding found"));
end_opt6(o1);
-
+
end_opt6(o);
}
-
+
}
/* We must anwser with 'success' in global section anyway */
}
}
-
+
log_tags(tagif, state->xid);
log6_opts(0, state->xid, daemon->outpacket.iov_base + start_opts, daemon->outpacket.iov_base + save_counter(-1));
-
+
return 1;
}
-static struct dhcp_netid *add_options(struct state *state, int do_refresh)
+static struct dhcp_netid *add_options(struct state *state, int do_refresh)
{
void *oro;
/* filter options based on tags, those we want get DHOPT_TAGOK bit set */
int i, o, o1;
oro = opt6_find(state->packet_options, state->end, OPTION6_ORO, 0);
-
+
for (opt_cfg = daemon->dhcp_opts6; opt_cfg; opt_cfg = opt_cfg->next)
{
/* netids match and not encapsulated? */
if (!(opt_cfg->flags & DHOPT_TAGOK))
continue;
-
+
if (!(opt_cfg->flags & DHOPT_FORCE) && oro)
{
for (i = 0; i < opt6_len(oro) - 1; i += 2)
if (opt6_uint(oro, i, 2) == (unsigned)opt_cfg->opt)
break;
-
+
/* option not requested */
if (i >= opt6_len(oro) - 1)
continue;
}
-
+
if (opt_cfg->opt == OPTION6_REFRESH_TIME)
done_refresh = 1;
-
+
if (opt_cfg->flags & DHOPT_ADDR6)
{
int len, j;
struct in6_addr *a;
-
+
if (opt_cfg->opt == OPTION6_DNS_SERVER)
done_dns = 1;
-
- for (a = (struct in6_addr *)opt_cfg->val, len = opt_cfg->len, j = 0;
+
+ for (a = (struct in6_addr *)opt_cfg->val, len = opt_cfg->len, j = 0;
j < opt_cfg->len; j += IN6ADDRSZ, a++)
if ((IN6_IS_ADDR_ULA_ZERO(a) && IN6_IS_ADDR_UNSPECIFIED(state->ula_addr)) ||
(IN6_IS_ADDR_LINK_LOCAL_ZERO(a) && IN6_IS_ADDR_UNSPECIFIED(state->ll_addr)))
len -= IN6ADDRSZ;
-
+
if (len != 0)
{
-
+
o = new_opt6(opt_cfg->opt);
-
+
for (a = (struct in6_addr *)opt_cfg->val, j = 0; j < opt_cfg->len; j+=IN6ADDRSZ, a++)
{
if (IN6_IS_ADDR_UNSPECIFIED(a))
end_opt6(o);
}
}
-
+
if (daemon->port == NAMESERVER_PORT && !done_dns)
{
o = new_opt6(OPTION6_DNS_SERVER);
if (!add_local_addrs(state->context))
put_opt6(state->fallback, IN6ADDRSZ);
- end_opt6(o);
+ end_opt6(o);
}
if (state->context && !done_refresh)
{
struct dhcp_context *c;
unsigned int lease_time = 0xffffffff;
-
+
/* Find the smallest lease tie of all contexts,
- subjext to the RFC-4242 stipulation that this must not
+ subjext to the RFC-4242 stipulation that this must not
be less than 600. */
for (c = state->context; c; c = c->next)
if (c->lease_time < lease_time)
o = new_opt6(OPTION6_REFRESH_TIME);
put_opt6_long(lease_time);
- end_opt6(o);
+ end_opt6(o);
}
-
+
/* handle vendor-identifying vendor-encapsulated options,
dhcp-option = vi-encap:13,17,....... */
for (opt_cfg = daemon->dhcp_opts6; opt_cfg; opt_cfg = opt_cfg->next)
opt_cfg->flags &= ~DHOPT_ENCAP_DONE;
-
+
if (oro)
for (i = 0; i < opt6_len(oro) - 1; i += 2)
if (opt6_uint(oro, i, 2) == OPTION6_VENDOR_OPTS)
do_encap = 1;
-
+
for (opt_cfg = daemon->dhcp_opts6; opt_cfg; opt_cfg = opt_cfg->next)
- {
+ {
if (opt_cfg->flags & DHOPT_RFC3925)
{
int found = 0;
struct dhcp_opt *oc;
-
+
if (opt_cfg->flags & DHOPT_ENCAP_DONE)
continue;
-
+
for (oc = daemon->dhcp_opts6; oc; oc = oc->next)
{
oc->flags &= ~DHOPT_ENCAP_MATCH;
-
+
if (!(oc->flags & DHOPT_RFC3925) || opt_cfg->u.encap != oc->u.encap)
continue;
-
+
oc->flags |= DHOPT_ENCAP_DONE;
if (match_netid(oc->netid, tagif, 1))
{
oc->flags |= DHOPT_ENCAP_MATCH;
found = 1;
}
- }
+ }
}
-
+
if (found)
- {
- o = new_opt6(OPTION6_VENDOR_OPTS);
- put_opt6_long(opt_cfg->u.encap);
-
+ {
+ o = new_opt6(OPTION6_VENDOR_OPTS);
+ put_opt6_long(opt_cfg->u.encap);
+
for (oc = daemon->dhcp_opts6; oc; oc = oc->next)
if (oc->flags & DHOPT_ENCAP_MATCH)
{
end_opt6(o);
}
}
- }
+ }
if (state->hostname)
{
unsigned char *p;
size_t len = strlen(state->hostname);
-
+
if (state->send_domain)
len += strlen(state->send_domain) + 2;
{
char *s = option_string(AF_INET6, opt6_uint(oro, i, 2), NULL, 0, NULL, 0);
q += snprintf(q, MAXDNAME - (q - daemon->namebuff),
- "%d%s%s%s",
+ "%d%s%s%s",
opt6_uint(oro, i, 2),
strlen(s) != 0 ? ":" : "",
- s,
+ s,
(i > opt6_len(oro) - 3) ? "" : ", ");
if ( i > opt6_len(oro) - 3 || (q - daemon->namebuff) > 40)
{
my_syslog(MS_DHCP | LOG_INFO, _("%u requested options: %s"), state->xid, daemon->namebuff);
}
}
- }
+ }
return tagif;
}
-
+
static int add_local_addrs(struct dhcp_context *context)
{
int done = 0;
-
+
for (; context; context = context->current)
if ((context->flags & CONTEXT_USED) && !IN6_IS_ADDR_UNSPECIFIED(&context->local6))
{
if ((c->flags & CONTEXT_USED) &&
IN6_ARE_ADDR_EQUAL(&context->local6, &c->local6))
break;
-
+
if (!c)
- {
+ {
done = 1;
put_opt6(&context->local6, IN6ADDRSZ);
}
if (!state->hostname_auth)
{
struct dhcp_netid_list *id_list;
-
+
for (id_list = daemon->dhcp_ignore_names; id_list; id_list = id_list->next)
if ((!id_list->list) || match_netid(id_list->list, &context->netid, 0))
break;
state->hostname = NULL;
}
}
-}
+}
#ifdef OPTION6_PREFIX_CLASS
static struct prefix_class *prefix_class_from_context(struct dhcp_context *context)
{
struct prefix_class *p;
struct dhcp_netid *t;
-
+
for (p = daemon->prefix_classes; p ; p = p->next)
for (t = context->filter; t; t = t->next)
if (strcmp(p->tag.net, t->net) == 0)
return p;
-
+
return NULL;
}
#endif
if (state->ia_type != OPTION6_IA_NA && state->ia_type != OPTION6_IA_TA)
return 0;
-
+
if (state->ia_type == OPTION6_IA_NA && opt6_len(opt) < 12)
return 0;
-
+
if (state->ia_type == OPTION6_IA_TA && opt6_len(opt) < 4)
return 0;
-
+
*endp = opt6_ptr(opt, opt6_len(opt));
state->iaid = opt6_uint(opt, 0, 4);
*ia_option = opt6_find(opt6_ptr(opt, state->ia_type == OPTION6_IA_NA ? 12 : 4), *endp, OPTION6_IAADDR, 24);
static int build_ia(struct state *state, int *t1cntr)
{
int o = new_opt6(state->ia_type);
-
+
put_opt6_long(state->iaid);
*t1cntr = 0;
-
+
if (state->ia_type == OPTION6_IA_NA)
{
/* save pointer */
*t1cntr = save_counter(-1);
/* so we can fill these in later */
put_opt6_long(0);
- put_opt6_long(0);
+ put_opt6_long(0);
}
return o;
if (do_fuzz)
{
fuzz = rand16();
-
+
while (fuzz > (min_time/16))
fuzz = fuzz/2;
}
-
+
t1 = (min_time == 0xffffffff) ? 0xffffffff : min_time/2 - fuzz;
t2 = (min_time == 0xffffffff) ? 0xffffffff : ((min_time/8)*7) - fuzz;
put_opt6_long(t1);
put_opt6_long(t2);
save_counter(sav);
- }
+ }
}
-static void add_address(struct state *state, struct dhcp_context *context, unsigned int lease_time, void *ia_option,
+static void add_address(struct state *state, struct dhcp_context *context, unsigned int lease_time, void *ia_option,
unsigned int *min_time, struct in6_addr *addr, time_t now)
{
unsigned int valid_time = 0, preferred_time = 0;
valid_time = opt6_uint(ia_option, 20, 4);
}
- calculate_times(context, min_time, &valid_time, &preferred_time, lease_time);
-
+ calculate_times(context, min_time, &valid_time, &preferred_time, lease_time);
+
put_opt6(addr, sizeof(*addr));
put_opt6_long(preferred_time);
- put_opt6_long(valid_time);
-
+ put_opt6_long(valid_time);
+
#ifdef OPTION6_PREFIX_CLASS
if (state->send_prefix_class)
{
#endif
end_opt6(o);
-
+
if (state->lease_allocate)
update_leases(state, context, addr, valid_time, now);
{
context->netid.next = state->context_tags;
state->context_tags = &context->netid;
-
+
if (!state->hostname_auth)
{
struct dhcp_netid_list *id_list;
-
+
for (id_list = daemon->dhcp_ignore_names; id_list; id_list = id_list->next)
if ((!id_list->list) || match_netid(id_list->list, &context->netid, 0))
break;
/* make sure address not leased to another CLID/IAID */
static int check_address(struct state *state, struct in6_addr *addr)
-{
+{
struct dhcp_lease *lease;
if (!(lease = lease6_find_by_addr(addr, 128, 0)))
return 1;
- if (lease->clid_len != state->clid_len ||
+ if (lease->clid_len != state->clid_len ||
memcmp(lease->clid, state->clid, state->clid_len) != 0 ||
lease->iaid != state->iaid)
return 0;
}
-/* Calculate valid and preferred times to send in leases/renewals.
+/* Calculate valid and preferred times to send in leases/renewals.
Inputs are:
*min_time - smallest valid time sent so far.
Outputs are :
-
+
*valid_timep, *preferred_timep - times to be send in IAADDR option.
*min_time - smallest valid time sent so far, to calculate T1 and T2.
-
+
*/
-static void calculate_times(struct dhcp_context *context, unsigned int *min_time, unsigned int *valid_timep,
+static void calculate_times(struct dhcp_context *context, unsigned int *min_time, unsigned int *valid_timep,
unsigned int *preferred_timep, unsigned int lease_time)
{
unsigned int req_preferred = *preferred_timep, req_valid = *valid_timep;
unsigned int valid_time = lease_time, preferred_time = lease_time;
-
+
/* RFC 3315: "A server ignores the lifetimes set
by the client if the preferred lifetime is greater than the valid
lifetime. */
/* 0 == "no preference from client" */
if (req_preferred < 120u)
req_preferred = 120u; /* sanity */
-
+
if (req_preferred < preferred_time)
preferred_time = req_preferred;
}
-
+
if (req_valid != 0)
/* 0 == "no preference from client" */
{
if (req_valid < 120u)
req_valid = 120u; /* sanity */
-
+
if (req_valid < valid_time)
valid_time = req_valid;
}
}
- /* deprecate (preferred == 0) which configured, or when local address
+ /* deprecate (preferred == 0) which configured, or when local address
is deprecated */
if ((context->flags & CONTEXT_DEPRECATE) || context->preferred == 0)
preferred_time = 0;
-
+
if (preferred_time != 0 && preferred_time < *min_time)
*min_time = preferred_time;
-
+
if (valid_time != 0 && valid_time < *min_time)
*min_time = valid_time;
-
+
*valid_timep = valid_time;
*preferred_timep = preferred_time;
}
if (!lease)
lease = lease6_allocate(addr, state->ia_type == OPTION6_IA_NA ? LEASE_NA : LEASE_TA);
-
+
if (lease)
{
lease_set_expires(lease, lease_time, now);
- lease_set_iaid(lease, state->iaid);
+ lease_set_iaid(lease, state->iaid);
lease_set_hwaddr(lease, state->mac, state->clid, state->mac_len, state->mac_type, state->clid_len, now, 0);
lease_set_interface(lease, state->interface, now);
if (state->hostname && state->ia_type == OPTION6_IA_NA)
state->send_domain = addr_domain;
lease_set_hostname(lease, state->hostname, state->hostname_auth, addr_domain, state->domain);
}
-
+
#ifdef HAVE_SCRIPT
if (daemon->lease_change_command)
{
free(lease->extradata);
lease->extradata = NULL;
lease->extradata_size = lease->extradata_len = 0;
- lease->vendorclass_count = 0;
-
+ lease->vendorclass_count = 0;
+
if ((class_opt = opt6_find(state->packet_options, state->end, OPTION6_VENDOR_CLASS, 4)))
{
void *enc_opt, *enc_end = opt6_ptr(class_opt, opt6_len(class_opt));
/* send enterprise number first */
sprintf(daemon->dhcp_buff2, "%u", opt6_uint(class_opt, 0, 4));
lease_add_extradata(lease, (unsigned char *)daemon->dhcp_buff2, strlen(daemon->dhcp_buff2), 0);
-
- if (opt6_len(class_opt) >= 6)
+
+ if (opt6_len(class_opt) >= 6)
for (enc_opt = opt6_ptr(class_opt, 4); enc_opt; enc_opt = opt6_next(enc_opt, enc_end))
{
lease->vendorclass_count++;
lease_add_extradata(lease, opt6_ptr(enc_opt, 0), opt6_len(enc_opt), 0);
}
}
-
- lease_add_extradata(lease, (unsigned char *)state->client_hostname,
- state->client_hostname ? strlen(state->client_hostname) : 0, 0);
-
+
+ lease_add_extradata(lease, (unsigned char *)state->client_hostname,
+ state->client_hostname ? strlen(state->client_hostname) : 0, 0);
+
/* space-concat tag set */
if (!tagif && !context->netid.net)
lease_add_extradata(lease, NULL, 0, 0);
{
if (context->netid.net)
lease_add_extradata(lease, (unsigned char *)context->netid.net, strlen(context->netid.net), tagif ? ' ' : 0);
-
+
if (tagif)
{
struct dhcp_netid *n;
if (strcmp(n->net, n1->net) == 0)
break;
if (!n1)
- lease_add_extradata(lease, (unsigned char *)n->net, strlen(n->net), n->next ? ' ' : 0);
+ lease_add_extradata(lease, (unsigned char *)n->net, strlen(n->net), n->next ? ' ' : 0);
}
}
}
-
+
if (state->link_address)
inet_ntop(AF_INET6, state->link_address, daemon->addrbuff, ADDRSTRLEN);
-
+
lease_add_extradata(lease, (unsigned char *)daemon->addrbuff, state->link_address ? strlen(daemon->addrbuff) : 0, 0);
-
+
if ((class_opt = opt6_find(state->packet_options, state->end, OPTION6_USER_CLASS, 2)))
{
void *enc_opt, *enc_end = opt6_ptr(class_opt, opt6_len(class_opt));
lease_add_extradata(lease, opt6_ptr(enc_opt, 0), opt6_len(enc_opt), 0);
}
}
-#endif
-
+#endif
+
}
}
-
-
-
+
+
+
static void log6_opts(int nest, unsigned int xid, void *start_opts, void *end_opts)
{
void *opt;
char *desc = nest ? "nest" : "sent";
-
+
if (!option_bool(OPT_LOG_OPTS) || start_opts == end_opts)
return;
-
+
for (opt = start_opts; opt; opt = opt6_next(opt, end_opts))
{
int type = opt6_type(opt);
void *ia_options = NULL;
char *optname;
-
+
if (type == OPTION6_IA_NA)
{
sprintf(daemon->namebuff, "IAID=%u T1=%u T2=%u",
else if (type == OPTION6_IAADDR)
{
inet_ntop(AF_INET6, opt6_ptr(opt, 0), daemon->addrbuff, ADDRSTRLEN);
- sprintf(daemon->namebuff, "%s PL=%u VL=%u",
+ sprintf(daemon->namebuff, "%s PL=%u VL=%u",
daemon->addrbuff, opt6_uint(opt, 16, 4), opt6_uint(opt, 20, 4));
optname = "iaaddr";
ia_options = opt6_ptr(opt, 24);
int offset = type == OPTION6_FQDN ? 1 : 0;
optname = option_string(AF_INET6, type, opt6_ptr(opt, offset), opt6_len(opt) - offset, daemon->namebuff, MAXDNAME);
}
-
- my_syslog(MS_DHCP | LOG_INFO, "%u %s size:%3d option:%3d %s %s",
+
+ my_syslog(MS_DHCP | LOG_INFO, "%u %s size:%3d option:%3d %s %s",
xid, desc, opt6_len(opt), type, optname, daemon->namebuff);
-
+
if (ia_options)
log6_opts(1, xid, ia_options, opt6_ptr(opt, opt6_len(opt)));
}
-}
-
+}
+
static void log6_quiet(struct state *state, char *type, struct in6_addr *addr, char *string)
{
if (option_bool(OPT_LOG_OPTS) || !option_bool(OPT_QUIET_DHCP6))
/* avoid buffer overflow */
if (clid_len > 100)
clid_len = 100;
-
+
print_mac(daemon->namebuff, state->clid, clid_len);
if (addr)
if(option_bool(OPT_LOG_OPTS))
my_syslog(MS_DHCP | LOG_INFO, "%u %s(%s) %s%s %s",
- state->xid,
+ state->xid,
type,
- state->iface_name,
+ state->iface_name,
daemon->dhcp_buff2,
daemon->namebuff,
string ? string : "");
else
my_syslog(MS_DHCP | LOG_INFO, "%s(%s) %s%s %s",
type,
- state->iface_name,
+ state->iface_name,
daemon->dhcp_buff2,
daemon->namebuff,
string ? string : "");
{
u16 opt, opt_len;
void *start;
-
+
if (!opts)
return NULL;
-
+
while (1)
{
- if (end - opts < 4)
+ if (end - opts < 4)
return NULL;
-
+
start = opts;
GETSHORT(opt, opts);
GETSHORT(opt_len, opts);
-
+
if (opt_len > (end - opts))
return NULL;
-
+
if (opt == search && (opt_len >= minsize))
return start;
-
+
opts += opt_len;
}
}
static void *opt6_next(void *opts, void *end)
{
u16 opt_len;
-
- if (end - opts < 4)
+
+ if (end - opts < 4)
return NULL;
-
+
opts += 2;
GETSHORT(opt_len, opts);
-
+
if (opt_len >= (end - opts))
return NULL;
-
+
return opts + opt_len;
}
unsigned int ret = 0;
int i;
unsigned char *p = opt6_ptr(opt, offset);
-
+
for (i = 0; i < size; i++)
ret = (ret << 8) | *p++;
-
+
return ret;
-}
+}
void relay_upstream6(struct dhcp_relay *relay, ssize_t sz, struct in6_addr *peer_address, u32 scope_id)
{
/* ->local is same value for all relays on ->current chain */
-
+
struct all_addr from;
unsigned char *header;
unsigned char *inbuff = daemon->dhcp_packet.iov_base;
/* source address == relay address */
from.addr.addr6 = relay->local.addr.addr6;
-
- /* Get hop count from nested relayed message */
+
+ /* Get hop count from nested relayed message */
if (msg_type == DHCP6RELAYFORW)
hopcount = *((unsigned char *)inbuff+1) + 1;
else
header[1] = hopcount;
memcpy(&header[2], &relay->local.addr.addr6, IN6ADDRSZ);
memcpy(&header[18], peer_address, IN6ADDRSZ);
-
+
/* RFC-6939 */
if (maclen != 0)
{
put_opt6(mac, maclen);
end_opt6(o);
}
-
+
o = new_opt6(OPTION6_RELAY_MSG);
put_opt6(inbuff, sz);
end_opt6(o);
-
+
for (; relay; relay = relay->current)
{
union mysockaddr to;
-
+
to.sa.sa_family = AF_INET6;
to.in6.sin6_addr = relay->server.addr.addr6;
to.in6.sin6_port = htons(DHCPV6_SERVER_PORT);
setsockopt(daemon->dhcp6fd, IPPROTO_IPV6, IPV6_MULTICAST_IF, &multicast_iface, sizeof(multicast_iface)) == -1)
my_syslog(MS_DHCP | LOG_ERR, _("Cannot multicast to DHCPv6 server without correct interface"));
}
-
+
send_from(daemon->dhcp6fd, 0, daemon->outpacket.iov_base, save_counter(0), &to, &from, 0);
-
+
if (option_bool(OPT_LOG_OPTS))
{
inet_ntop(AF_INET6, &relay->local, daemon->addrbuff, ADDRSTRLEN);
struct dhcp_relay *relay;
struct in6_addr link;
unsigned char *inbuff = daemon->dhcp_packet.iov_base;
-
+
/* must have at least msg_type+hopcount+link_address+peer_address+minimal size option
which is 1 + 1 + 16 + 16 + 2 + 2 = 38 */
-
+
if (sz < 38 || *inbuff != DHCP6RELAYREPL)
return 0;
-
- memcpy(&link, &inbuff[2], IN6ADDRSZ);
-
+
+ memcpy(&link, &inbuff[2], IN6ADDRSZ);
+
for (relay = daemon->relay6; relay; relay = relay->next)
if (IN6_ARE_ADDR_EQUAL(&link, &relay->local.addr.addr6) &&
(!relay->interface || wildcard_match(relay->interface, arrival_interface)))
break;
-
+
save_counter(0);
if (relay)
{
int encap_type = *((unsigned char *)opt6_ptr(opt, 0));
put_opt6(opt6_ptr(opt, 0), opt6_len(opt));
- memcpy(&peer->sin6_addr, &inbuff[18], IN6ADDRSZ);
+ memcpy(&peer->sin6_addr, &inbuff[18], IN6ADDRSZ);
peer->sin6_scope_id = relay->iface_index;
return encap_type == DHCP6RELAYREPL ? DHCPV6_SERVER_PORT : DHCPV6_CLIENT_PORT;
}
projects / platform / upstream / dnsmasq.git / blobdiff