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import of dnsmasq-2.16.tar.gz

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This commit is contained in:
Simon Kelley
2004-10-21 20:24:00 +01:00
parent 36717eeefc
commit fd9fa4811d
21 changed files with 1193 additions and 635 deletions
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80
src/rfc2131.c
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@@ -408,10 +408,12 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
(iface_addr.s_addr != option_addr(opt).s_addr))
return 0;
log_packet("RELEASE", &mess->ciaddr, mess->chaddr, iface_name, NULL);
if (lease && lease->addr.s_addr == mess->ciaddr.s_addr)
lease_prune(lease, now);
else
message = "unknown lease";
log_packet("RELEASE", &mess->ciaddr, mess->chaddr, iface_name, message);
return 0;
@@ -473,22 +475,14 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
lease_prune(lease, now);
lease = NULL;
}
if (!lease)
{
if (lease_find_by_addr(mess->yiaddr))
message = "address in use";
else if (!(lease = lease_allocate(clid, clid_len, mess->yiaddr)))
message = "no leases left";
}
}
else
{
/* INIT-REBOOT */
if (!lease)
if (!lease && !(daemon->options & OPT_AUTHORITATIVE))
return 0;
if (lease->addr.s_addr != mess->yiaddr.s_addr)
if (lease && lease->addr.s_addr != mess->yiaddr.s_addr)
message = "wrong address";
}
}
@@ -507,31 +501,40 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
mess->yiaddr = mess->ciaddr;
}
log_packet("REQUEST", &mess->yiaddr, mess->chaddr, iface_name, NULL);
if (!message)
{
struct dhcp_config *addr_config;
/* If a machine moves networks whilst it has a lease, we catch that here. */
if (!is_same_net(mess->yiaddr, context->start, context->netmask))
message = "wrong network";
/* Check for renewal of a lease which is now outside the allowed range. */
/* Check for renewal of a lease which is outside the allowed range. */
else if (!address_available(context, mess->yiaddr) &&
(!have_config(config, CONFIG_ADDR) || config->addr.s_addr != mess->yiaddr.s_addr))
message = "address no longer available";
message = "address not available";
/* Check if a new static address has been configured. Be very sure that
when the client does DISCOVER, it will get the static address, otherwise
an endless protocol loop will ensue. */
else if (have_config(config, CONFIG_ADDR) && !lease_find_by_addr(config->addr))
else if (have_config(config, CONFIG_ADDR) &&
config->addr.s_addr != mess->yiaddr.s_addr &&
(!(ltmp = lease_find_by_addr(config->addr)) || ltmp == lease))
message = "static lease available";
/* Check to see if the address is reserved as a static address for another host */
else if ((addr_config = config_find_by_address(daemon->dhcp_conf, mess->yiaddr)) && addr_config != config)
message ="address reserved";
}
log_packet("REQUEST", &mess->yiaddr, mess->chaddr, iface_name, NULL);
else if ((ltmp = lease_find_by_addr(mess->yiaddr)) && ltmp != lease)
message = "address in use";
else if (!lease && !(lease = lease_allocate(clid, clid_len, mess->yiaddr)))
message = "no leases left";
}
if (message)
{
@@ -541,30 +544,31 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
bootp_option_put(mess, NULL, NULL);
p = option_put(p, end, OPTION_MESSAGE_TYPE, 1, DHCPNAK);
p = option_put_string(p, end, OPTION_MESSAGE, message);
p = option_end(p, end, mess);
mess->flags |= htons(0x8000); /* broadcast */
return p - (unsigned char *)mess;
}
log_packet("ACK", &mess->yiaddr, mess->chaddr, iface_name, hostname);
lease_set_hwaddr(lease, mess->chaddr);
if (hostname)
lease_set_hostname(lease, hostname, daemon->domain_suffix);
lease_set_expires(lease, renewal_time == 0xffffffff ? 0 : now + (time_t)renewal_time);
bootp_option_put(mess, daemon->dhcp_file, daemon->dhcp_sname);
mess->siaddr = daemon->dhcp_next_server.s_addr ? daemon->dhcp_next_server : iface_addr;
p = option_put(p, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);
p = option_put(p, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(iface_addr.s_addr));
p = option_put(p, end, OPTION_LEASE_TIME, 4, renewal_time);
if (renewal_time != 0xffffffff)
else
{
p = option_put(p, end, OPTION_T1, 4, (renewal_time/2) - fuzz);
p = option_put(p, end, OPTION_T2, 4, ((renewal_time * 7)/8) - fuzz);
log_packet("ACK", &mess->yiaddr, mess->chaddr, iface_name, hostname);
lease_set_hwaddr(lease, mess->chaddr);
if (hostname)
lease_set_hostname(lease, hostname, daemon->domain_suffix);
lease_set_expires(lease, renewal_time == 0xffffffff ? 0 : now + (time_t)renewal_time);
bootp_option_put(mess, daemon->dhcp_file, daemon->dhcp_sname);
mess->siaddr = daemon->dhcp_next_server.s_addr ? daemon->dhcp_next_server : iface_addr;
p = option_put(p, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);
p = option_put(p, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(iface_addr.s_addr));
p = option_put(p, end, OPTION_LEASE_TIME, 4, renewal_time);
if (renewal_time != 0xffffffff)
{
p = option_put(p, end, OPTION_T1, 4, (renewal_time/2) - fuzz);
p = option_put(p, end, OPTION_T2, 4, ((renewal_time * 7)/8) - fuzz);
}
p = do_req_options(context, p, end, req_options, daemon,
hostname, iface_addr, netid, subnet_addr);
}
p = do_req_options(context, p, end, req_options, daemon,
hostname, iface_addr, netid, subnet_addr);
p = option_end(p, end, mess);
return p - (unsigned char *)mess;