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-rw-r--r--slirp2/bootp.c263
1 files changed, 0 insertions, 263 deletions
diff --git a/slirp2/bootp.c b/slirp2/bootp.c
deleted file mode 100644
index 9ab4b15..0000000
--- a/slirp2/bootp.c
+++ /dev/null
@@ -1,263 +0,0 @@
-/*
- * QEMU BOOTP/DHCP server
- *
- * Copyright (c) 2004 Fabrice Bellard
- *
- * Permission is hereby granted, free of charge, to any person obtaining a copy
- * of this software and associated documentation files (the "Software"), to deal
- * in the Software without restriction, including without limitation the rights
- * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- * copies of the Software, and to permit persons to whom the Software is
- * furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included in
- * all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
- * THE SOFTWARE.
- */
-#include <slirp.h>
-
-/* XXX: only DHCP is supported */
-
-#define NB_ADDR 16
-
-#define START_ADDR 15
-
-#define LEASE_TIME (24 * 3600)
-
-typedef struct {
- uint8_t allocated;
- uint8_t macaddr[6];
-} BOOTPClient;
-
-BOOTPClient bootp_clients[NB_ADDR];
-
-const char *bootp_filename;
-
-static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
-
-#ifdef DEBUG
-#define dprintf(fmt, args...) \
-if (slirp_debug & DBG_CALL) { fprintf(dfd, fmt, ## args); fflush(dfd); }
-#else
-#define dprintf(fmt, args...)
-#endif
-
-static BOOTPClient *get_new_addr(SockAddress* paddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_ADDR; i++) {
- if (!bootp_clients[i].allocated)
- goto found;
- }
- return NULL;
- found:
- bc = &bootp_clients[i];
- bc->allocated = 1;
- sock_address_init_inet( paddr,
- special_addr_ip | (i+START_ADDR),
- BOOTP_CLIENT );
- return bc;
-}
-
-static BOOTPClient *find_addr(SockAddress* paddr, const uint8_t *macaddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_ADDR; i++) {
- if (!memcmp(macaddr, bootp_clients[i].macaddr, 6))
- goto found;
- }
- return NULL;
- found:
- bc = &bootp_clients[i];
- bc->allocated = 1;
- sock_address_init_inet( paddr,
- special_addr_ip | (i + START_ADDR),
- BOOTP_CLIENT );
- return bc;
-}
-
-static void dhcp_decode(const uint8_t *buf, int size,
- int *pmsg_type)
-{
- const uint8_t *p, *p_end;
- int len, tag;
-
- *pmsg_type = 0;
-
- p = buf;
- p_end = buf + size;
- if (size < 5)
- return;
- if (memcmp(p, rfc1533_cookie, 4) != 0)
- return;
- p += 4;
- while (p < p_end) {
- tag = p[0];
- if (tag == RFC1533_PAD) {
- p++;
- } else if (tag == RFC1533_END) {
- break;
- } else {
- p++;
- if (p >= p_end)
- break;
- len = *p++;
- dprintf("dhcp: tag=0x%02x len=%d\n", tag, len);
-
- switch(tag) {
- case RFC2132_MSG_TYPE:
- if (len >= 1)
- *pmsg_type = p[0];
- break;
- default:
- break;
- }
- p += len;
- }
- }
-}
-
-static void bootp_reply(struct bootp_t *bp)
-{
- BOOTPClient *bc;
- MBuf m;
- struct bootp_t *rbp;
- SockAddress saddr, daddr;
- uint32_t dns_addr;
- int dhcp_msg_type, val;
- uint8_t *q;
-
- /* extract exact DHCP msg type */
- dhcp_decode(bp->bp_vend, DHCP_OPT_LEN, &dhcp_msg_type);
- dprintf("bootp packet op=%d msgtype=%d\n", bp->bp_op, dhcp_msg_type);
-
- if (dhcp_msg_type == 0)
- dhcp_msg_type = DHCPREQUEST; /* Force reply for old BOOTP clients */
-
- if (dhcp_msg_type != DHCPDISCOVER &&
- dhcp_msg_type != DHCPREQUEST)
- return;
- /* XXX: this is a hack to get the client mac address */
- memcpy(client_ethaddr, bp->bp_hwaddr, 6);
-
- if ((m = mbuf_alloc()) == NULL)
- return;
- m->m_data += if_maxlinkhdr;
- rbp = (struct bootp_t *)m->m_data;
- m->m_data += sizeof(struct udpiphdr);
- memset(rbp, 0, sizeof(struct bootp_t));
-
- if (dhcp_msg_type == DHCPDISCOVER) {
- new_addr:
- bc = get_new_addr(&daddr);
- if (!bc) {
- dprintf("no address left\n");
- return;
- }
- memcpy(bc->macaddr, client_ethaddr, 6);
- } else {
- bc = find_addr(&daddr, bp->bp_hwaddr);
- if (!bc) {
- /* if never assigned, behaves as if it was already
- assigned (windows fix because it remembers its address) */
- goto new_addr;
- }
- }
- if (bootp_filename)
- snprintf((char*)rbp->bp_file, sizeof(rbp->bp_file), "%s", bootp_filename);
-
- dprintf("offered addr=%s\n", sock_address_to_string(&daddr));
-
- sock_address_init_inet( &saddr, special_addr_ip | CTL_ALIAS,
- BOOTP_SERVER );
-
- rbp->bp_op = BOOTP_REPLY;
- rbp->bp_xid = bp->bp_xid;
- rbp->bp_htype = 1;
- rbp->bp_hlen = 6;
- memcpy(rbp->bp_hwaddr, bp->bp_hwaddr, 6);
-
- rbp->bp_yiaddr = htonl(sock_address_get_ip(&daddr)); /* Client IP address */
- rbp->bp_siaddr = htonl(sock_address_get_ip(&saddr)); /* Server IP address */
-
- q = rbp->bp_vend;
- memcpy(q, rfc1533_cookie, 4);
- q += 4;
-
- if (dhcp_msg_type == DHCPDISCOVER) {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPOFFER;
- } else if (dhcp_msg_type == DHCPREQUEST) {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPACK;
- }
-
- if (dhcp_msg_type == DHCPDISCOVER ||
- dhcp_msg_type == DHCPREQUEST) {
- uint32_t saddr_ip = htonl(sock_address_get_ip(&saddr));
- *q++ = RFC2132_SRV_ID;
- *q++ = 4;
- memcpy(q, &saddr_ip, 4);
- q += 4;
-
- *q++ = RFC1533_NETMASK;
- *q++ = 4;
- *q++ = 0xff;
- *q++ = 0xff;
- *q++ = 0xff;
- *q++ = 0x00;
-
- *q++ = RFC1533_GATEWAY;
- *q++ = 4;
- memcpy(q, &saddr_ip, 4);
- q += 4;
-
- *q++ = RFC1533_DNS;
- *q++ = 4;
- dns_addr = htonl(special_addr_ip | CTL_DNS);
- memcpy(q, &dns_addr, 4);
- q += 4;
-
- *q++ = RFC2132_LEASE_TIME;
- *q++ = 4;
- val = htonl(LEASE_TIME);
- memcpy(q, &val, 4);
- q += 4;
-
- if (*slirp_hostname) {
- val = strlen(slirp_hostname);
- *q++ = RFC1533_HOSTNAME;
- *q++ = val;
- memcpy(q, slirp_hostname, val);
- q += val;
- }
- }
- *q++ = RFC1533_END;
-
- m->m_len = sizeof(struct bootp_t) -
- sizeof(struct ip) - sizeof(struct udphdr);
-
- udp_output2_(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
-}
-
-void bootp_input(MBuf m)
-{
- struct bootp_t *bp = MBUF_TO(m, struct bootp_t *);
-
- if (bp->bp_op == BOOTP_REQUEST) {
- bootp_reply(bp);
- }
-}
generated by cgit v1.1 at 2024-05-19 21:59:52 +0000