diff options
Diffstat (limited to 'server/bootp.c')
| -rw-r--r-- | server/bootp.c | 281 |
1 files changed, 0 insertions, 281 deletions
diff --git a/server/bootp.c b/server/bootp.c deleted file mode 100644 index 08a3fed7..00000000 --- a/server/bootp.c +++ /dev/null @@ -1,281 +0,0 @@ -/* bootp.c - - BOOTP Protocol support. */ - -/* - * Copyright (c) 1995, 1996 The Internet Software Consortium. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of The Internet Software Consortium nor the names - * of its contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INTERNET SOFTWARE CONSORTIUM AND - * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, - * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF - * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE - * DISCLAIMED. IN NO EVENT SHALL THE INTERNET SOFTWARE CONSORTIUM OR - * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF - * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND - * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, - * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT - * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - * - * This software has been written for the Internet Software Consortium - * by Ted Lemon <mellon@fugue.com> in cooperation with Vixie - * Enterprises. To learn more about the Internet Software Consortium, - * see ``http://www.vix.com/isc''. To learn more about Vixie - * Enterprises, see ``http://www.vix.com''. - */ - -#ifndef lint -static char copyright[] = -"$Id: bootp.c,v 1.19 1996/09/12 22:22:18 mellon Exp $ Copyright (c) 1995, 1996 The Internet Software Consortium. All rights reserved.\n"; -#endif /* not lint */ - -#include "dhcpd.h" - -void bootp (packet) - struct packet *packet; -{ - int result; - struct host_decl *hp; - struct host_decl *host = (struct host_decl *)0; - struct packet outgoing; - struct dhcp_packet raw; - struct sockaddr_in to; - struct in_addr from; - struct hardware hto; - struct tree_cache *options [256]; - struct subnet *subnet; - struct lease *lease; - struct iaddr ip_address; - int i; - - note ("BOOTREQUEST from %s via %s", - print_hw_addr (packet -> raw -> htype, - packet -> raw -> hlen, - packet -> raw -> chaddr), - packet -> raw -> giaddr.s_addr - ? inet_ntoa (packet -> raw -> giaddr) - : packet -> interface -> name); - - - - if (!locate_network (packet)) - return; - - hp = find_hosts_by_haddr (packet -> raw -> htype, - packet -> raw -> chaddr, - packet -> raw -> hlen); - - lease = find_lease (packet, packet -> shared_network); - - /* 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 we've been told not to boot unknown clients, - and we didn't find any host record for this client, - ignore it. */ - if (!hp && !(packet -> shared_network -> - group -> boot_unknown_clients)) { - note ("Ignoring unknown BOOTP client %s", - print_hw_addr (packet -> raw -> htype, - packet -> raw -> hlen, - packet -> raw -> chaddr)); - } - - /* 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 -> group -> 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 to this client - and it's still okay to use dynamic bootp on - that lease, reassign it. */ - if (lease) { - /* If this lease can be used for dynamic bootp, - do so. */ - if ((lease -> flags & DYNAMIC_BOOTP_OK)) { - - /* If it's not a DYNAMIC_BOOTP lease, - release it before reassigning it - so that we don't get a lease - conflict. */ - if (!(lease -> flags & BOOTP_LEASE)) - release_lease (lease); - - lease -> host = host; - ack_lease (packet, lease, 0, 0); - return; - } - - /* 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; - } - - /* Set up the outgoing packet... */ - memset (&outgoing, 0, sizeof outgoing); - memset (&raw, 0, sizeof raw); - outgoing.raw = &raw; - - /* Come up with a list of options that we want to send to this - client. Start with the per-subnet options, and then override - those with client-specific options. */ - - memcpy (options, subnet -> group -> options, sizeof options); - - for (i = 0; i < 256; i++) { - if (hp -> group -> options [i]) - options [i] = hp -> group -> options [i]; - } - - /* Pack the options into the buffer. Unlike DHCP, we can't - pack options into the filename and server name buffers. */ - - cons_options (packet, &outgoing, options, 0, 0); - if (outgoing.packet_length < BOOTP_MIN_LEN) - outgoing.packet_length = BOOTP_MIN_LEN; - - /* Take the fields that we care about... */ - raw.op = BOOTREPLY; - raw.htype = packet -> raw -> htype; - raw.hlen = packet -> raw -> hlen; - memcpy (raw.chaddr, packet -> raw -> chaddr, raw.hlen); - memset (&raw.chaddr [raw.hlen], 0, - (sizeof raw.chaddr) - raw.hlen); - raw.hops = packet -> raw -> hops; - raw.xid = packet -> raw -> xid; - raw.secs = packet -> raw -> secs; - raw.flags = 0; - raw.ciaddr = packet -> raw -> ciaddr; - memcpy (&raw.yiaddr, ip_address.iabuf, sizeof raw.yiaddr); - - /* Figure out the address of the next server. */ - if (hp && hp -> group -> next_server.len) - memcpy (&raw.siaddr, hp -> group -> next_server.iabuf, 4); - else if (subnet -> group -> next_server.len) - memcpy (&raw.siaddr, subnet -> group -> next_server.iabuf, 4); - else 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 -> group -> server_name) { - strncpy (raw.sname, hp -> group -> server_name, - (sizeof raw.sname) - 1); - raw.sname [(sizeof raw.sname) - 1] = 0; - } - if (hp -> group -> filename) { - strncpy (raw.file, hp -> group -> filename, - (sizeof raw.file) - 1); - 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); - - if (server_identifier.len) - memcpy (&from, server_identifier.iabuf, 4); - else - memset (&from, 0, 4); - - /* Report what we're doing... */ - note ("BOOTREPLY for %s to %s (%s) via %s", - piaddr (ip_address), hp -> name, - print_hw_addr (packet -> raw -> htype, - packet -> raw -> hlen, - packet -> raw -> chaddr), - packet -> raw -> giaddr.s_addr - ? inet_ntoa (packet -> raw -> giaddr) - : packet -> interface -> name); - - /* 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, - (struct packet *)0, - &raw, outgoing.packet_length, - from, &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 */ - } - - errno = 0; - result = send_packet (packet -> interface, - packet, &raw, outgoing.packet_length, - from, &to, &hto); - if (result < 0) - warn ("send_packet: %m"); -} |