struct packet *packet;
{
int result;
- struct host_decl *hp = find_host_by_addr (packet -> raw -> htype,
- packet -> raw -> chaddr,
- packet -> raw -> hlen);
+ struct host_decl *hp = find_hosts_by_haddr (packet -> raw -> htype,
+ packet -> raw -> chaddr,
+ packet -> raw -> hlen);
+ struct host_decl *host = (struct host_decl *)0;
struct packet outgoing;
struct dhcp_packet raw;
struct sockaddr_in to;
struct hardware hto;
struct tree_cache *options [256];
+ struct subnet *subnet;
+ struct lease *lease;
+ struct iaddr ip_address;
int i;
- /* If the packet is from a host we don't know, drop it on
- the floor. XXX */
- if (!hp) {
- note ("Can't find record for BOOTP host %s",
- print_hw_addr (packet -> raw -> htype,
- packet -> raw -> hlen,
- packet -> raw -> chaddr));
- return;
+ note ("BOOTREQUEST from %s", print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+
+ lease = find_lease (packet);
+
+ /* Find an IP address in the host_decl that matches the
+ specified network. */
+ if (hp)
+ subnet = find_host_for_network (&hp, &ip_address,
+ packet -> shared_network);
+ else
+ subnet = (struct subnet *)0;
+
+ if (!subnet) {
+ /* We didn't find an applicable host declaration.
+ Just in case we may be able to dynamically assign
+ an address, see if there's a host declaration
+ that doesn't have an ip address associated with it. */
+ if (hp) {
+ for (; hp; hp = hp -> n_ipaddr) {
+ if (!hp -> fixed_addr) {
+ host = hp;
+ }
+ }
+ }
+
+ /* If the packet is from a host we don't know and there
+ are no dynamic bootp addresses on the network it came
+ in on, drop it on the floor. */
+ if (!packet -> shared_network -> dynamic_bootp) {
+ lose:
+ note ("No applicable record for BOOTP host %s",
+ print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+ return;
+ }
+
+ /* If a lease has already been assigned through dynamic
+ BOOTP, and it's still okay to use dynamic bootp on
+ that lease, reassign it. */
+ if (lease) {
+ if ((lease -> flags & BOOTP_LEASE) &&
+ (lease -> flags & DYNAMIC_BOOTP_OK)) {
+ lease -> host = host;
+ ack_lease (packet, lease, 0, 0);
+ return;
+ }
+ /* If the lease was acquired with DHCP, or
+ if dynamic BOOTP is no longer allowed for
+ this lease, set it free. */
+ release_lease (lease);
+ }
+
+ /* If there are dynamic bootp addresses that might be
+ available, try to snag one. */
+ for (lease =
+ packet -> shared_network -> last_lease;
+ lease && lease -> ends <= cur_time;
+ lease = lease -> prev) {
+ if ((lease -> flags & DYNAMIC_BOOTP_OK)) {
+ lease -> host = host;
+ ack_lease (packet, lease, 0, 0);
+ return;
+ }
+ }
+ goto lose;
}
/* If we don't have a fixed address for it, drop it. */
- if (!hp -> fixed_addr || !tree_evaluate (hp -> fixed_addr)) {
+ if (!subnet) {
note ("No fixed address for BOOTP host %s (%s)",
print_hw_addr (packet -> raw -> htype,
packet -> raw -> hlen,
client. Start with the per-subnet options, and then override
those with client-specific options. */
- memcpy (options, packet -> subnet -> options, sizeof options);
+ memcpy (options, subnet -> options, sizeof options);
for (i = 0; i < 256; i++) {
if (hp -> options [i])
raw.secs = packet -> raw -> secs;
raw.flags = 0;
raw.ciaddr = packet -> raw -> ciaddr;
- if (!tree_evaluate (hp -> fixed_addr))
- warn ("tree_evaluate failed.");
- debug ("fixed_addr: %x %d %d %d %d %x",
- *(int *)(hp -> fixed_addr -> value), hp -> fixed_addr -> len,
- hp -> fixed_addr -> buf_size, hp -> fixed_addr -> timeout,
- hp -> fixed_addr -> tree);
- memcpy (&raw.yiaddr, hp -> fixed_addr -> value,
- sizeof raw.yiaddr);
- memcpy (&raw.siaddr, packet -> interface -> address.iabuf, 4);
+ memcpy (&raw.yiaddr, ip_address.iabuf, sizeof raw.yiaddr);
+
+ if (subnet -> interface_address.len)
+ memcpy (&raw.siaddr, subnet -> interface_address.iabuf, 4);
+ else
+ memcpy (&raw.siaddr, server_identifier.iabuf, 4);
+
raw.giaddr = packet -> raw -> giaddr;
if (hp -> server_name) {
strncpy (raw.sname, hp -> server_name,
raw.file [(sizeof raw.file) - 1] = 0;
}
+ /* Set up the hardware destination address... */
+ hto.htype = packet -> raw -> htype;
+ hto.hlen = packet -> raw -> hlen;
+ memcpy (hto.haddr, packet -> raw -> chaddr, hto.hlen);
+
+ /* Report what we're doing... */
+ note ("BOOTREPLY for %s to %s",
+ inet_ntoa (raw.yiaddr),
+ print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+
+ /* Set up the parts of the address that are in common. */
+ to.sin_family = AF_INET;
+#ifdef HAVE_SA_LEN
+ to.sin_len = sizeof to;
+#endif
+ memset (to.sin_zero, 0, sizeof to.sin_zero);
+
/* If this was gatewayed, send it back to the gateway... */
if (raw.giaddr.s_addr) {
to.sin_addr = raw.giaddr;
to.sin_port = server_port;
+
+#ifdef USE_FALLBACK
+ result = send_fallback (&fallback_interface,
+ packet, &raw, outgoing.packet_length,
+ raw.siaddr, &to, &hto);
+ if (result < 0)
+ warn ("send_fallback: %m");
+ return;
+#endif
/* Otherwise, broadcast it on the local network. */
} else {
to.sin_addr.s_addr = INADDR_BROADCAST;
to.sin_port = htons (ntohs (server_port) + 1); /* XXX */
}
- to.sin_family = AF_INET;
-#ifdef HAVE_SA_LEN
- to.sin_len = sizeof to;
-#endif
- memset (to.sin_zero, 0, sizeof to.sin_zero);
-
- note ("Sending BOOTREPLY to %s, address %s",
- print_hw_addr (packet -> raw -> htype,
- packet -> raw -> hlen,
- packet -> raw -> chaddr),
- inet_ntoa (packet -> raw -> yiaddr));
-
- hto.htype = packet -> raw -> htype;
- hto.hlen = packet -> raw -> hlen;
- memcpy (hto.haddr, packet -> raw -> chaddr, hto.hlen);
-
errno = 0;
result = send_packet (packet -> interface,
- packet, &raw, outgoing.packet_length, &to, &hto);
+ packet, &raw, outgoing.packet_length,
+ raw.siaddr, &to, &hto);
if (result < 0)
warn ("send_packet: %m");
}
struct packet *packet;
{
int result;
- struct host_decl *hp = find_host_by_addr (packet -> raw -> htype,
- packet -> raw -> chaddr,
- packet -> raw -> hlen);
+ struct host_decl *hp = find_hosts_by_haddr (packet -> raw -> htype,
+ packet -> raw -> chaddr,
+ packet -> raw -> hlen);
+ struct host_decl *host = (struct host_decl *)0;
struct packet outgoing;
struct dhcp_packet raw;
struct sockaddr_in to;
struct hardware hto;
struct tree_cache *options [256];
+ struct subnet *subnet;
+ struct lease *lease;
+ struct iaddr ip_address;
int i;
- /* If the packet is from a host we don't know, drop it on
- the floor. XXX */
- if (!hp) {
- note ("Can't find record for BOOTP host %s",
- print_hw_addr (packet -> raw -> htype,
- packet -> raw -> hlen,
- packet -> raw -> chaddr));
- return;
+ note ("BOOTREQUEST from %s", print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+
+ lease = find_lease (packet);
+
+ /* Find an IP address in the host_decl that matches the
+ specified network. */
+ if (hp)
+ subnet = find_host_for_network (&hp, &ip_address,
+ packet -> shared_network);
+ else
+ subnet = (struct subnet *)0;
+
+ if (!subnet) {
+ /* We didn't find an applicable host declaration.
+ Just in case we may be able to dynamically assign
+ an address, see if there's a host declaration
+ that doesn't have an ip address associated with it. */
+ if (hp) {
+ for (; hp; hp = hp -> n_ipaddr) {
+ if (!hp -> fixed_addr) {
+ host = hp;
+ }
+ }
+ }
+
+ /* If the packet is from a host we don't know and there
+ are no dynamic bootp addresses on the network it came
+ in on, drop it on the floor. */
+ if (!packet -> shared_network -> dynamic_bootp) {
+ lose:
+ note ("No applicable record for BOOTP host %s",
+ print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+ return;
+ }
+
+ /* If a lease has already been assigned through dynamic
+ BOOTP, and it's still okay to use dynamic bootp on
+ that lease, reassign it. */
+ if (lease) {
+ if ((lease -> flags & BOOTP_LEASE) &&
+ (lease -> flags & DYNAMIC_BOOTP_OK)) {
+ lease -> host = host;
+ ack_lease (packet, lease, 0, 0);
+ return;
+ }
+ /* If the lease was acquired with DHCP, or
+ if dynamic BOOTP is no longer allowed for
+ this lease, set it free. */
+ release_lease (lease);
+ }
+
+ /* If there are dynamic bootp addresses that might be
+ available, try to snag one. */
+ for (lease =
+ packet -> shared_network -> last_lease;
+ lease && lease -> ends <= cur_time;
+ lease = lease -> prev) {
+ if ((lease -> flags & DYNAMIC_BOOTP_OK)) {
+ lease -> host = host;
+ ack_lease (packet, lease, 0, 0);
+ return;
+ }
+ }
+ goto lose;
}
/* If we don't have a fixed address for it, drop it. */
- if (!hp -> fixed_addr || !tree_evaluate (hp -> fixed_addr)) {
+ if (!subnet) {
note ("No fixed address for BOOTP host %s (%s)",
print_hw_addr (packet -> raw -> htype,
packet -> raw -> hlen,
client. Start with the per-subnet options, and then override
those with client-specific options. */
- memcpy (options, packet -> subnet -> options, sizeof options);
+ memcpy (options, subnet -> options, sizeof options);
for (i = 0; i < 256; i++) {
if (hp -> options [i])
raw.secs = packet -> raw -> secs;
raw.flags = 0;
raw.ciaddr = packet -> raw -> ciaddr;
- if (!tree_evaluate (hp -> fixed_addr))
- warn ("tree_evaluate failed.");
- debug ("fixed_addr: %x %d %d %d %d %x",
- *(int *)(hp -> fixed_addr -> value), hp -> fixed_addr -> len,
- hp -> fixed_addr -> buf_size, hp -> fixed_addr -> timeout,
- hp -> fixed_addr -> tree);
- memcpy (&raw.yiaddr, hp -> fixed_addr -> value,
- sizeof raw.yiaddr);
- memcpy (&raw.siaddr, packet -> interface -> address.iabuf, 4);
+ memcpy (&raw.yiaddr, ip_address.iabuf, sizeof raw.yiaddr);
+
+ if (subnet -> interface_address.len)
+ memcpy (&raw.siaddr, subnet -> interface_address.iabuf, 4);
+ else
+ memcpy (&raw.siaddr, server_identifier.iabuf, 4);
+
raw.giaddr = packet -> raw -> giaddr;
if (hp -> server_name) {
strncpy (raw.sname, hp -> server_name,
raw.file [(sizeof raw.file) - 1] = 0;
}
+ /* Set up the hardware destination address... */
+ hto.htype = packet -> raw -> htype;
+ hto.hlen = packet -> raw -> hlen;
+ memcpy (hto.haddr, packet -> raw -> chaddr, hto.hlen);
+
+ /* Report what we're doing... */
+ note ("BOOTREPLY for %s to %s",
+ inet_ntoa (raw.yiaddr),
+ print_hw_addr (packet -> raw -> htype,
+ packet -> raw -> hlen,
+ packet -> raw -> chaddr));
+
+ /* Set up the parts of the address that are in common. */
+ to.sin_family = AF_INET;
+#ifdef HAVE_SA_LEN
+ to.sin_len = sizeof to;
+#endif
+ memset (to.sin_zero, 0, sizeof to.sin_zero);
+
/* If this was gatewayed, send it back to the gateway... */
if (raw.giaddr.s_addr) {
to.sin_addr = raw.giaddr;
to.sin_port = server_port;
+
+#ifdef USE_FALLBACK
+ result = send_fallback (&fallback_interface,
+ packet, &raw, outgoing.packet_length,
+ raw.siaddr, &to, &hto);
+ if (result < 0)
+ warn ("send_fallback: %m");
+ return;
+#endif
/* Otherwise, broadcast it on the local network. */
} else {
to.sin_addr.s_addr = INADDR_BROADCAST;
to.sin_port = htons (ntohs (server_port) + 1); /* XXX */
}
- to.sin_family = AF_INET;
-#ifdef HAVE_SA_LEN
- to.sin_len = sizeof to;
-#endif
- memset (to.sin_zero, 0, sizeof to.sin_zero);
-
- note ("Sending BOOTREPLY to %s, address %s",
- print_hw_addr (packet -> raw -> htype,
- packet -> raw -> hlen,
- packet -> raw -> chaddr),
- inet_ntoa (packet -> raw -> yiaddr));
-
- hto.htype = packet -> raw -> htype;
- hto.hlen = packet -> raw -> hlen;
- memcpy (hto.haddr, packet -> raw -> chaddr, hto.hlen);
-
errno = 0;
result = send_packet (packet -> interface,
- packet, &raw, outgoing.packet_length, &to, &hto);
+ packet, &raw, outgoing.packet_length,
+ raw.siaddr, &to, &hto);
if (result < 0)
warn ("send_packet: %m");
}
projects / thirdparty / dhcp.git / commitdiff
