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Added identity_lease option to create random or identity based DHCP leases

This commit is contained in:
Martin Willi 2010-03-24 11:22:54 +01:00
parent 4f0932ecfe
commit e06a6154e2
1 changed files with 17 additions and 3 deletions
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20
src/libcharon/plugins/dhcp/dhcp_socket.c
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@ -95,6 +95,11 @@ struct private_dhcp_socket_t {
*/
int receive;
/**
* Do we use per-identity or random leases (and MAC addresses)
*/
bool identity_lease;
/**
* DHCP server address, or broadcast
*/
@ -192,7 +197,7 @@ static int prepare_dhcp(private_dhcp_socket_t *this,
dhcp_option_t *option;
int optlen = 0;
host_t *src;
u_int hash;
u_int32_t id;
memset(dhcp, 0, sizeof(*dhcp));
dhcp->opcode = BOOTREQUEST;
@ -222,8 +227,15 @@ static int prepare_dhcp(private_dhcp_socket_t *this,
dhcp->client_hw_addr[0] = 0x7A;
dhcp->client_hw_addr[1] = 0xA7;
/* with ID specific postfix */
hash = htonl(chunk_hash(chunk));
memcpy(&dhcp->client_hw_addr[2], &hash, 4);
if (this->identity_lease)
{
id = htonl(chunk_hash(chunk));
}
else
{
id = transaction->get_id(transaction);
}
memcpy(&dhcp->client_hw_addr[2], &id, sizeof(id));
dhcp->magic_cookie = htonl(0x63825363);
@ -600,6 +612,8 @@ dhcp_socket_t *dhcp_socket_create()
destroy(this);
return NULL;
}
this->identity_lease = lib->settings->get_bool(lib->settings,
"charon.plugins.dhcp.identity_lease", FALSE);
this->dst = host_create_from_string(lib->settings->get_str(lib->settings,
"charon.plugins.dhcp.server", "255.255.255.255"),
DHCP_SERVER_PORT);