version 1.1, 2013/07/29 19:37:40
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version 1.1.1.3, 2016/11/02 09:57:01
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/* dnsmasq is Copyright (c) 2000-2013 Simon Kelley | /* dnsmasq is Copyright (c) 2000-2016 Simon Kelley |
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This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
Line 108 void lease_init(time_t now)
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Line 108 void lease_init(time_t now)
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{ |
{ |
char *s = daemon->dhcp_buff2; |
char *s = daemon->dhcp_buff2; |
int lease_type = LEASE_NA; |
int lease_type = LEASE_NA; |
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int iaid; |
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if (s[0] == 'T') |
if (s[0] == 'T') |
{ |
{ |
Line 115 void lease_init(time_t now)
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Line 116 void lease_init(time_t now)
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s++; |
s++; |
} |
} |
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hw_type = strtoul(s, NULL, 10); | iaid = strtoul(s, NULL, 10); |
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if ((lease = lease6_allocate(&addr.addr.addr6, lease_type))) |
if ((lease = lease6_allocate(&addr.addr.addr6, lease_type))) |
{ |
{ |
lease_set_hwaddr(lease, NULL, (unsigned char *)daemon->packet, 0, hw_type, clid_len, now, 0); | lease_set_hwaddr(lease, NULL, (unsigned char *)daemon->packet, 0, 0, clid_len, now, 0); |
| lease_set_iaid(lease, iaid); |
if (strcmp(daemon->dhcp_buff, "*") != 0) |
if (strcmp(daemon->dhcp_buff, "*") != 0) |
lease_set_hostname(lease, daemon->dhcp_buff, 0, get_domain6((struct in6_addr *)lease->hwaddr), NULL); |
lease_set_hostname(lease, daemon->dhcp_buff, 0, get_domain6((struct in6_addr *)lease->hwaddr), NULL); |
} |
} |
Line 187 void lease_update_from_configs(void)
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Line 188 void lease_update_from_configs(void)
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char *name; |
char *name; |
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for (lease = leases; lease; lease = lease->next) |
for (lease = leases; lease; lease = lease->next) |
if ((config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len, | if (lease->flags & (LEASE_TA | LEASE_NA)) |
lease->hwaddr, lease->hwaddr_len, lease->hwaddr_type, NULL)) && | continue; |
(config->flags & CONFIG_NAME) && | else if ((config = find_config(daemon->dhcp_conf, NULL, lease->clid, lease->clid_len, |
(!(config->flags & CONFIG_ADDR) || config->addr.s_addr == lease->addr.s_addr)) | lease->hwaddr, lease->hwaddr_len, lease->hwaddr_type, NULL)) && |
| (config->flags & CONFIG_NAME) && |
| (!(config->flags & CONFIG_ADDR) || config->addr.s_addr == lease->addr.s_addr)) |
lease_set_hostname(lease, config->hostname, 1, get_domain(lease->addr), NULL); |
lease_set_hostname(lease, config->hostname, 1, get_domain(lease->addr), NULL); |
else if ((name = host_from_dns(lease->addr))) |
else if ((name = host_from_dns(lease->addr))) |
lease_set_hostname(lease, name, 1, get_domain(lease->addr), NULL); /* updates auth flag only */ |
lease_set_hostname(lease, name, 1, get_domain(lease->addr), NULL); /* updates auth flag only */ |
Line 277 void lease_update_file(time_t now)
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Line 280 void lease_update_file(time_t now)
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ourprintf(&err, "%lu ", (unsigned long)lease->expires); |
ourprintf(&err, "%lu ", (unsigned long)lease->expires); |
#endif |
#endif |
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inet_ntop(AF_INET6, lease->hwaddr, daemon->addrbuff, ADDRSTRLEN); | inet_ntop(AF_INET6, &lease->addr6, daemon->addrbuff, ADDRSTRLEN); |
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ourprintf(&err, "%s%u %s ", (lease->flags & LEASE_TA) ? "T" : "", |
ourprintf(&err, "%s%u %s ", (lease->flags & LEASE_TA) ? "T" : "", |
lease->hwaddr_type, daemon->addrbuff); | lease->iaid, daemon->addrbuff); |
ourprintf(&err, "%s ", lease->hostname ? lease->hostname : "*"); |
ourprintf(&err, "%s ", lease->hostname ? lease->hostname : "*"); |
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if (lease->clid && lease->clid_len != 0) |
if (lease->clid && lease->clid_len != 0) |
Line 303 void lease_update_file(time_t now)
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Line 306 void lease_update_file(time_t now)
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file_dirty = 0; |
file_dirty = 0; |
} |
} |
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/* Set alarm for when the first lease expires + slop. */ | /* Set alarm for when the first lease expires. */ |
next_event = 0; |
next_event = 0; |
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#ifdef HAVE_DHCP6 |
#ifdef HAVE_DHCP6 |
Line 328 void lease_update_file(time_t now)
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Line 331 void lease_update_file(time_t now)
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for (lease = leases; lease; lease = lease->next) |
for (lease = leases; lease; lease = lease->next) |
if (lease->expires != 0 && |
if (lease->expires != 0 && |
(next_event == 0 || difftime(next_event, lease->expires + 10) > 0.0)) | (next_event == 0 || difftime(next_event, lease->expires) > 0.0)) |
next_event = lease->expires + 10; | next_event = lease->expires; |
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if (err) |
if (err) |
{ |
{ |
Line 345 void lease_update_file(time_t now)
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Line 348 void lease_update_file(time_t now)
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} |
} |
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static int find_interface_v4(struct in_addr local, int if_index, | static int find_interface_v4(struct in_addr local, int if_index, char *label, |
struct in_addr netmask, struct in_addr broadcast, void *vparam) |
struct in_addr netmask, struct in_addr broadcast, void *vparam) |
{ |
{ |
struct dhcp_lease *lease; |
struct dhcp_lease *lease; |
| int prefix = netmask_length(netmask); |
| |
| (void) label; |
(void) broadcast; |
(void) broadcast; |
(void) vparam; |
(void) vparam; |
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for (lease = leases; lease; lease = lease->next) |
for (lease = leases; lease; lease = lease->next) |
if (!(lease->flags & (LEASE_TA | LEASE_NA))) | if (!(lease->flags & (LEASE_TA | LEASE_NA)) && |
if (is_same_net(local, lease->addr, netmask)) | is_same_net(local, lease->addr, netmask) && |
lease_set_interface(lease, if_index, *((time_t *)vparam)); | prefix > lease->new_prefixlen) |
| { |
| lease->new_interface = if_index; |
| lease->new_prefixlen = prefix; |
| } |
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return 1; |
return 1; |
} |
} |
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Line 367 static int find_interface_v6(struct in6_addr *local,
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Line 376 static int find_interface_v6(struct in6_addr *local,
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int preferred, int valid, void *vparam) |
int preferred, int valid, void *vparam) |
{ |
{ |
struct dhcp_lease *lease; |
struct dhcp_lease *lease; |
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(void)scope; |
(void)scope; |
(void)flags; |
(void)flags; |
(void)preferred; |
(void)preferred; |
(void)valid; |
(void)valid; |
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(void)vparam; |
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for (lease = leases; lease; lease = lease->next) |
for (lease = leases; lease; lease = lease->next) |
if ((lease->flags & (LEASE_TA | LEASE_NA))) |
if ((lease->flags & (LEASE_TA | LEASE_NA))) |
if (is_same_net6(local, (struct in6_addr *)&lease->hwaddr, prefix)) | if (is_same_net6(local, &lease->addr6, prefix) && prefix > lease->new_prefixlen) { |
lease_set_interface(lease, if_index, *((time_t *)vparam)); | /* save prefix length for comparison, as we might get shorter matching |
| * prefix in upcoming netlink GETADDR responses |
| * */ |
| lease->new_interface = if_index; |
| lease->new_prefixlen = prefix; |
| } |
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return 1; |
return 1; |
} |
} |
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Line 410 void lease_update_slaac(time_t now)
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Line 425 void lease_update_slaac(time_t now)
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start-time. */ |
start-time. */ |
void lease_find_interfaces(time_t now) |
void lease_find_interfaces(time_t now) |
{ |
{ |
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struct dhcp_lease *lease; |
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for (lease = leases; lease; lease = lease->next) |
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lease->new_prefixlen = lease->new_interface = 0; |
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iface_enumerate(AF_INET, &now, find_interface_v4); |
iface_enumerate(AF_INET, &now, find_interface_v4); |
#ifdef HAVE_DHCP6 |
#ifdef HAVE_DHCP6 |
iface_enumerate(AF_INET6, &now, find_interface_v6); |
iface_enumerate(AF_INET6, &now, find_interface_v6); |
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#endif |
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for (lease = leases; lease; lease = lease->next) |
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if (lease->new_interface != 0) |
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lease_set_interface(lease, lease->new_interface, now); |
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} |
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#ifdef HAVE_DHCP6 |
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void lease_make_duid(time_t now) |
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{ |
/* If we're not doing DHCPv6, and there are not v6 leases, don't add the DUID to the database */ |
/* If we're not doing DHCPv6, and there are not v6 leases, don't add the DUID to the database */ |
if (!daemon->duid && daemon->dhcp6) | if (!daemon->duid && daemon->doing_dhcp6) |
{ |
{ |
file_dirty = 1; |
file_dirty = 1; |
make_duid(now); |
make_duid(now); |
} |
} |
#endif |
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} |
} |
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#endif |
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void lease_update_dns(int force) |
void lease_update_dns(int force) |
{ |
{ |
struct dhcp_lease *lease; |
struct dhcp_lease *lease; |
Line 458 void lease_update_dns(int force)
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Line 488 void lease_update_dns(int force)
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cache_add_dhcp_entry(lease->hostname, AF_INET6, (struct all_addr *)&slaac->addr, lease->expires); |
cache_add_dhcp_entry(lease->hostname, AF_INET6, (struct all_addr *)&slaac->addr, lease->expires); |
} |
} |
} |
} |
#endif |
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if (lease->fqdn) |
if (lease->fqdn) |
cache_add_dhcp_entry(lease->fqdn, prot, |
cache_add_dhcp_entry(lease->fqdn, prot, |
prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->hwaddr, | prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->addr6, |
lease->expires); |
lease->expires); |
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if (!option_bool(OPT_DHCP_FQDN) && lease->hostname) |
if (!option_bool(OPT_DHCP_FQDN) && lease->hostname) |
cache_add_dhcp_entry(lease->hostname, prot, |
cache_add_dhcp_entry(lease->hostname, prot, |
prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->hwaddr, | prot == AF_INET ? (struct all_addr *)&lease->addr : (struct all_addr *)&lease->addr6, |
lease->expires); |
lease->expires); |
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#else |
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if (lease->fqdn) |
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cache_add_dhcp_entry(lease->fqdn, prot, (struct all_addr *)&lease->addr, lease->expires); |
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if (!option_bool(OPT_DHCP_FQDN) && lease->hostname) |
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cache_add_dhcp_entry(lease->hostname, prot, (struct all_addr *)&lease->addr, lease->expires); |
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#endif |
} |
} |
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dns_dirty = 0; |
dns_dirty = 0; |
Line 563 struct dhcp_lease *lease6_find(unsigned char *clid, in
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Line 600 struct dhcp_lease *lease6_find(unsigned char *clid, in
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for (lease = leases; lease; lease = lease->next) |
for (lease = leases; lease; lease = lease->next) |
{ |
{ |
if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid) | if (!(lease->flags & lease_type) || lease->iaid != iaid) |
continue; |
continue; |
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if (memcmp(lease->hwaddr, addr, IN6ADDRSZ) != 0) | if (!IN6_ARE_ADDR_EQUAL(&lease->addr6, addr)) |
continue; |
continue; |
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if ((clid_len != lease->clid_len || |
if ((clid_len != lease->clid_len || |
Line 603 struct dhcp_lease *lease6_find_by_client(struct dhcp_l
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Line 640 struct dhcp_lease *lease6_find_by_client(struct dhcp_l
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if (lease->flags & LEASE_USED) |
if (lease->flags & LEASE_USED) |
continue; |
continue; |
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if (!(lease->flags & lease_type) || lease->hwaddr_type != iaid) | if (!(lease->flags & lease_type) || lease->iaid != iaid) |
continue; |
continue; |
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if ((clid_len != lease->clid_len || |
if ((clid_len != lease->clid_len || |
Line 625 struct dhcp_lease *lease6_find_by_addr(struct in6_addr
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Line 662 struct dhcp_lease *lease6_find_by_addr(struct in6_addr
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if (!(lease->flags & (LEASE_TA | LEASE_NA))) |
if (!(lease->flags & (LEASE_TA | LEASE_NA))) |
continue; |
continue; |
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if (is_same_net6((struct in6_addr *)lease->hwaddr, net, prefix) && | if (is_same_net6(&lease->addr6, net, prefix) && |
(prefix == 128 || addr6part((struct in6_addr *)lease->hwaddr) == addr)) | (prefix == 128 || addr6part(&lease->addr6) == addr)) |
return lease; |
return lease; |
} |
} |
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Line 645 u64 lease_find_max_addr6(struct dhcp_context *context)
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Line 682 u64 lease_find_max_addr6(struct dhcp_context *context)
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if (!(lease->flags & (LEASE_TA | LEASE_NA))) |
if (!(lease->flags & (LEASE_TA | LEASE_NA))) |
continue; |
continue; |
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if (is_same_net6((struct in6_addr *)lease->hwaddr, &context->start6, 64) && | if (is_same_net6(&lease->addr6, &context->start6, 64) && |
addr6part((struct in6_addr *)lease->hwaddr) > addr6part(&context->start6) && | addr6part(&lease->addr6) > addr6part(&context->start6) && |
addr6part((struct in6_addr *)lease->hwaddr) <= addr6part(&context->end6) && | addr6part(&lease->addr6) <= addr6part(&context->end6) && |
addr6part((struct in6_addr *)lease->hwaddr) > addr) | addr6part(&lease->addr6) > addr) |
addr = addr6part((struct in6_addr *)lease->hwaddr); | addr = addr6part(&lease->addr6); |
} |
} |
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return addr; |
return addr; |
Line 691 static struct dhcp_lease *lease_allocate(void)
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Line 728 static struct dhcp_lease *lease_allocate(void)
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#ifdef HAVE_BROKEN_RTC |
#ifdef HAVE_BROKEN_RTC |
lease->length = 0xffffffff; /* illegal value */ |
lease->length = 0xffffffff; /* illegal value */ |
#endif |
#endif |
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lease->hwaddr_len = 256; /* illegal value */ |
lease->next = leases; |
lease->next = leases; |
leases = lease; |
leases = lease; |
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Line 704 struct dhcp_lease *lease4_allocate(struct in_addr addr
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Line 742 struct dhcp_lease *lease4_allocate(struct in_addr addr
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{ |
{ |
struct dhcp_lease *lease = lease_allocate(); |
struct dhcp_lease *lease = lease_allocate(); |
if (lease) |
if (lease) |
{ | lease->addr = addr; |
lease->addr = addr; | |
lease->hwaddr_len = 256; /* illegal value */ | |
} | |
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return lease; |
return lease; |
} |
} |
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Line 719 struct dhcp_lease *lease6_allocate(struct in6_addr *ad
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Line 754 struct dhcp_lease *lease6_allocate(struct in6_addr *ad
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if (lease) |
if (lease) |
{ |
{ |
memcpy(lease->hwaddr, addrp, sizeof(*addrp)) ; | lease->addr6 = *addrp; |
lease->flags |= lease_type; |
lease->flags |= lease_type; |
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lease->iaid = 0; |
} |
} |
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return lease; |
return lease; |
Line 729 struct dhcp_lease *lease6_allocate(struct in6_addr *ad
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Line 765 struct dhcp_lease *lease6_allocate(struct in6_addr *ad
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void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now) |
void lease_set_expires(struct dhcp_lease *lease, unsigned int len, time_t now) |
{ |
{ |
time_t exp = now + (time_t)len; | time_t exp; |
| |
if (len == 0xffffffff) |
if (len == 0xffffffff) |
{ |
{ |
exp = 0; |
exp = 0; |
len = 0; |
len = 0; |
} |
} |
| else |
| { |
| exp = now + (time_t)len; |
| /* Check for 2038 overflow. Make the lease |
| inifinite in that case, as the least disruptive |
| thing we can do. */ |
| if (difftime(exp, now) <= 0.0) |
| exp = 0; |
| } |
| |
if (exp != lease->expires) |
if (exp != lease->expires) |
{ |
{ |
dns_dirty = 1; |
dns_dirty = 1; |
Line 757 void lease_set_expires(struct dhcp_lease *lease, unsig
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Line 802 void lease_set_expires(struct dhcp_lease *lease, unsig
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#endif |
#endif |
} |
} |
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void lease_set_hwaddr(struct dhcp_lease *lease, unsigned char *hwaddr, | #ifdef HAVE_DHCP6 |
unsigned char *clid, int hw_len, int hw_type, int clid_len, | void lease_set_iaid(struct dhcp_lease *lease, int iaid) |
time_t now, int force) | |
{ |
{ |
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if (lease->iaid != iaid) |
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{ |
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lease->iaid = iaid; |
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lease->flags |= LEASE_CHANGED; |
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} |
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} |
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#endif |
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void lease_set_hwaddr(struct dhcp_lease *lease, const unsigned char *hwaddr, |
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const unsigned char *clid, int hw_len, int hw_type, |
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int clid_len, time_t now, int force) |
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{ |
#ifdef HAVE_DHCP6 |
#ifdef HAVE_DHCP6 |
int change = force; |
int change = force; |
lease->flags |= LEASE_HAVE_HWADDR; |
lease->flags |= LEASE_HAVE_HWADDR; |
#endif |
#endif |
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(void)force; |
(void)force; |
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(void)now; |
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if (hw_len != lease->hwaddr_len || |
if (hw_len != lease->hwaddr_len || |
hw_type != lease->hwaddr_type || |
hw_type != lease->hwaddr_type || |
Line 778 void lease_set_hwaddr(struct dhcp_lease *lease, unsign
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Line 835 void lease_set_hwaddr(struct dhcp_lease *lease, unsign
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lease->hwaddr_type = hw_type; |
lease->hwaddr_type = hw_type; |
lease->flags |= LEASE_CHANGED; |
lease->flags |= LEASE_CHANGED; |
file_dirty = 1; /* run script on change */ |
file_dirty = 1; /* run script on change */ |
#ifdef HAVE_DHCP6 |
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change = 1; |
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#endif |
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} |
} |
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/* only update clid when one is available, stops packets |
/* only update clid when one is available, stops packets |
Line 843 static void kill_name(struct dhcp_lease *lease)
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Line 897 static void kill_name(struct dhcp_lease *lease)
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lease->hostname = lease->fqdn = NULL; |
lease->hostname = lease->fqdn = NULL; |
} |
} |
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void lease_set_hostname(struct dhcp_lease *lease, char *name, int auth, char *domain, char *config_domain) | void lease_set_hostname(struct dhcp_lease *lease, const char *name, int auth, char *domain, char *config_domain) |
{ |
{ |
struct dhcp_lease *lease_tmp; |
struct dhcp_lease *lease_tmp; |
char *new_name = NULL, *new_fqdn = NULL; |
char *new_name = NULL, *new_fqdn = NULL; |
Line 938 void lease_set_hostname(struct dhcp_lease *lease, char
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Line 992 void lease_set_hostname(struct dhcp_lease *lease, char
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void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now) |
void lease_set_interface(struct dhcp_lease *lease, int interface, time_t now) |
{ |
{ |
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(void)now; |
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if (lease->last_interface == interface) |
if (lease->last_interface == interface) |
return; |
return; |
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Line 966 int do_script_run(time_t now)
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Line 1022 int do_script_run(time_t now)
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{ |
{ |
struct dhcp_lease *lease; |
struct dhcp_lease *lease; |
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(void)now; |
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#ifdef HAVE_DBUS |
#ifdef HAVE_DBUS |
/* If we're going to be sending DBus signals, but the connection is not yet up, |
/* If we're going to be sending DBus signals, but the connection is not yet up, |
delay everything until it is. */ |
delay everything until it is. */ |
Line 1052 int do_script_run(time_t now)
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Line 1110 int do_script_run(time_t now)
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} |
} |
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#ifdef HAVE_SCRIPT |
#ifdef HAVE_SCRIPT |
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/* delim == -1 -> delim = 0, but embeded 0s, creating extra records, are OK. */ |
void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data, unsigned int len, int delim) |
void lease_add_extradata(struct dhcp_lease *lease, unsigned char *data, unsigned int len, int delim) |
{ |
{ |
unsigned int i; |
unsigned int i; |
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/* check for embeded NULLs */ | if (delim == -1) |
for (i = 0; i < len; i++) | delim = 0; |
if (data[i] == 0) | else |
{ | /* check for embeded NULLs */ |
len = i; | for (i = 0; i < len; i++) |
break; | if (data[i] == 0) |
} | { |
| len = i; |
| break; |
| } |
| |
if ((lease->extradata_size - lease->extradata_len) < (len + 1)) |
if ((lease->extradata_size - lease->extradata_len) < (len + 1)) |
{ |
{ |
size_t newsz = lease->extradata_len + len + 100; |
size_t newsz = lease->extradata_len + len + 100; |