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import of dnsmasq-2.18.tar.gz

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This commit is contained in:
Simon Kelley
2004-11-21 19:34:28 +00:00
parent 26128d2747
commit 59353a6b56
11 changed files with 225 additions and 141 deletions
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99
src/rfc2131.c
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@@ -94,7 +94,7 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
char *hostname = NULL;
char *req_options = NULL;
char *message = NULL;
unsigned int renewal_time, expires_time, def_time;
unsigned int time;
struct dhcp_config *config;
struct dhcp_netid *netid = NULL;
struct in_addr addr, subnet_addr;
@@ -171,13 +171,6 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
{
context_tmp->current = context;
context = context_tmp;
/* start to build netid chain */
if (context_tmp->netid.net)
{
context_tmp->netid.next = netid;
netid = &context_tmp->netid;
}
}
if (!context)
@@ -205,6 +198,7 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
mess->yiaddr = config->addr;
if (lease_find_by_addr(config->addr))
message = "address in use";
context = narrow_context(context, config->addr);
}
else
message = "no address configured";
@@ -217,6 +211,12 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
if (have_config(config, CONFIG_NAME))
hostname = config->hostname;
if (context->netid.net)
{
context->netid.next = netid;
netid = &context->netid;
}
if (have_config(config, CONFIG_NETID))
{
config->netid.next = netid;
@@ -348,27 +348,6 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
/* do we have a lease in store? */
lease = lease_find_by_client(clid, clid_len);
def_time = have_config(config, CONFIG_TIME) ? config->lease_time : context->lease_time;
if ((opt = option_find(mess, sz, OPTION_LEASE_TIME)))
{
unsigned int req_time = option_uint(opt, 4);
if (def_time == 0xffffffff ||
(req_time != 0xffffffff && req_time < def_time))
expires_time = renewal_time = req_time;
else
expires_time = renewal_time = def_time;
}
else
{
renewal_time = def_time;
if (lease)
expires_time = (unsigned int)difftime(lease->expires, now);
else
expires_time = def_time;
}
if ((opt = option_find(mess, sz, OPTION_REQUESTED_OPTIONS)))
{
int len = option_len(opt);
@@ -455,16 +434,33 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
if (message)
return 0;
context = narrow_context(context, mess->yiaddr);
if (context->netid.net)
{
context->netid.next = netid;
netid = &context->netid;
}
time = have_config(config, CONFIG_TIME) ? config->lease_time : context->lease_time;
if ((opt = option_find(mess, sz, OPTION_LEASE_TIME)))
{
unsigned int req_time = option_uint(opt, 4);
if (time == 0xffffffff || (req_time != 0xffffffff && req_time < time))
time = req_time;
}
else if (lease && lease->expires != 0)
time = (unsigned int)difftime(lease->expires, now);
mess->siaddr = iface_addr;
bootp_option_put(mess, daemon->boot_config, netid);
p = option_put(p, end, OPTION_MESSAGE_TYPE, 1, DHCPOFFER);
p = option_put(p, end, OPTION_SERVER_IDENTIFIER, INADDRSZ, ntohl(iface_addr.s_addr));
p = option_put(p, end, OPTION_LEASE_TIME, 4, expires_time);
p = option_put(p, end, OPTION_LEASE_TIME, 4, time);
/* T1 and T2 are required in DHCPOFFER by HP's wacky Jetdirect client. */
if (expires_time != 0xffffffff)
if (time != 0xffffffff)
{
p = option_put(p, end, OPTION_T1, 4, (expires_time/2));
p = option_put(p, end, OPTION_T2, 4, ((expires_time * 7)/8));
p = option_put(p, end, OPTION_T1, 4, (time/2));
p = option_put(p, end, OPTION_T2, 4, (time*7)/8);
}
p = do_req_options(context, p, end, req_options, daemon,
NULL, iface_addr, netid, subnet_addr);
@@ -513,9 +509,6 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
/* desynchronise renewals */
fuzz = rand16();
while (fuzz > (renewal_time/16))
fuzz = fuzz/2;
mess->yiaddr = mess->ciaddr;
}
@@ -568,20 +561,37 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
{
log_packet("ACK", &mess->yiaddr, mess->chaddr, iface_name, hostname);
context = narrow_context(context, mess->yiaddr);
if (context->netid.net)
{
context->netid.next = netid;
netid = &context->netid;
}
time = have_config(config, CONFIG_TIME) ? config->lease_time : context->lease_time;
if ((opt = option_find(mess, sz, OPTION_LEASE_TIME)))
{
unsigned int req_time = option_uint(opt, 4);
if (time == 0xffffffff || (req_time != 0xffffffff && req_time < time))
time = req_time;
}
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);
lease_set_expires(lease, time == 0xffffffff ? 0 : now + (time_t)time);
mess->siaddr = iface_addr;
bootp_option_put(mess, daemon->boot_config, netid);
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_LEASE_TIME, 4, time);
if (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);
while (fuzz > (time/16))
fuzz = fuzz/2;
p = option_put(p, end, OPTION_T1, 4, (time/2) - fuzz);
p = option_put(p, end, OPTION_T2, 4, ((time * 7)/8) - fuzz);
}
p = do_req_options(context, p, end, req_options, daemon,
hostname, iface_addr, netid, subnet_addr);
@@ -599,6 +609,13 @@ int dhcp_reply(struct daemon *daemon, struct in_addr iface_addr, char *iface_nam
if (message || mess->ciaddr.s_addr == 0)
return 0;
context = narrow_context(context, mess->ciaddr);
if (context->netid.net)
{
context->netid.next = netid;
netid = &context->netid;
}
mess->siaddr = iface_addr;
bootp_option_put(mess, daemon->boot_config, netid);
p = option_put(p, end, OPTION_MESSAGE_TYPE, 1, DHCPACK);