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-rw-r--r--slirp/bootp.c371
1 files changed, 0 insertions, 371 deletions
diff --git a/slirp/bootp.c b/slirp/bootp.c
deleted file mode 100644
index 4c9a77eb98..0000000000
--- a/slirp/bootp.c
+++ /dev/null
@@ -1,371 +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 "qemu/osdep.h"
-#include "slirp.h"
-
-#if defined(_WIN32)
-/* Windows ntohl() returns an u_long value.
- * Add a type cast to match the format strings. */
-# define ntohl(n) ((uint32_t)ntohl(n))
-#endif
-
-/* XXX: only DHCP is supported */
-
-#define LEASE_TIME (24 * 3600)
-
-static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
-
-#define DPRINTF(fmt, ...) DEBUG_CALL(fmt, ##__VA_ARGS__)
-
-static BOOTPClient *get_new_addr(Slirp *slirp, struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
- bc = &slirp->bootp_clients[i];
- if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6))
- goto found;
- }
- return NULL;
- found:
- bc = &slirp->bootp_clients[i];
- bc->allocated = 1;
- paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
- return bc;
-}
-
-static BOOTPClient *request_addr(Slirp *slirp, const struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- uint32_t req_addr = ntohl(paddr->s_addr);
- uint32_t dhcp_addr = ntohl(slirp->vdhcp_startaddr.s_addr);
- BOOTPClient *bc;
-
- if (req_addr >= dhcp_addr &&
- req_addr < (dhcp_addr + NB_BOOTP_CLIENTS)) {
- bc = &slirp->bootp_clients[req_addr - dhcp_addr];
- if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) {
- bc->allocated = 1;
- return bc;
- }
- }
- return NULL;
-}
-
-static BOOTPClient *find_addr(Slirp *slirp, struct in_addr *paddr,
- const uint8_t *macaddr)
-{
- BOOTPClient *bc;
- int i;
-
- for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
- if (!memcmp(macaddr, slirp->bootp_clients[i].macaddr, 6))
- goto found;
- }
- return NULL;
- found:
- bc = &slirp->bootp_clients[i];
- bc->allocated = 1;
- paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
- return bc;
-}
-
-static void dhcp_decode(const struct bootp_t *bp, int *pmsg_type,
- struct in_addr *preq_addr)
-{
- const uint8_t *p, *p_end;
- int len, tag;
-
- *pmsg_type = 0;
- preq_addr->s_addr = htonl(0L);
-
- p = bp->bp_vend;
- p_end = p + DHCP_OPT_LEN;
- 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++;
- if (p + len > p_end) {
- break;
- }
- DPRINTF("dhcp: tag=%d len=%d\n", tag, len);
-
- switch(tag) {
- case RFC2132_MSG_TYPE:
- if (len >= 1)
- *pmsg_type = p[0];
- break;
- case RFC2132_REQ_ADDR:
- if (len >= 4) {
- memcpy(&(preq_addr->s_addr), p, 4);
- }
- break;
- default:
- break;
- }
- p += len;
- }
- }
- if (*pmsg_type == DHCPREQUEST && preq_addr->s_addr == htonl(0L) &&
- bp->bp_ciaddr.s_addr) {
- memcpy(&(preq_addr->s_addr), &bp->bp_ciaddr, 4);
- }
-}
-
-static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
-{
- BOOTPClient *bc = NULL;
- struct mbuf *m;
- struct bootp_t *rbp;
- struct sockaddr_in saddr, daddr;
- struct in_addr preq_addr;
- int dhcp_msg_type, val;
- uint8_t *q;
- uint8_t *end;
- uint8_t client_ethaddr[ETH_ALEN];
-
- /* extract exact DHCP msg type */
- dhcp_decode(bp, &dhcp_msg_type, &preq_addr);
- DPRINTF("bootp packet op=%d msgtype=%d", bp->bp_op, dhcp_msg_type);
- if (preq_addr.s_addr != htonl(0L))
- DPRINTF(" req_addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
- else {
- DPRINTF("\n");
- }
-
- 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;
-
- /* Get client's hardware address from bootp request */
- memcpy(client_ethaddr, bp->bp_hwaddr, ETH_ALEN);
-
- m = m_get(slirp);
- if (!m) {
- 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) {
- if (preq_addr.s_addr != htonl(0L)) {
- bc = request_addr(slirp, &preq_addr, client_ethaddr);
- if (bc) {
- daddr.sin_addr = preq_addr;
- }
- }
- if (!bc) {
- new_addr:
- bc = get_new_addr(slirp, &daddr.sin_addr, client_ethaddr);
- if (!bc) {
- DPRINTF("no address left\n");
- return;
- }
- }
- memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
- } else if (preq_addr.s_addr != htonl(0L)) {
- bc = request_addr(slirp, &preq_addr, client_ethaddr);
- if (bc) {
- daddr.sin_addr = preq_addr;
- memcpy(bc->macaddr, client_ethaddr, ETH_ALEN);
- } else {
- /* DHCPNAKs should be sent to broadcast */
- daddr.sin_addr.s_addr = 0xffffffff;
- }
- } else {
- bc = find_addr(slirp, &daddr.sin_addr, 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;
- }
- }
-
- /* Update ARP table for this IP address */
- arp_table_add(slirp, daddr.sin_addr.s_addr, client_ethaddr);
-
- saddr.sin_addr = slirp->vhost_addr;
- saddr.sin_port = htons(BOOTP_SERVER);
-
- daddr.sin_port = htons(BOOTP_CLIENT);
-
- 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, ETH_ALEN);
-
- rbp->bp_yiaddr = daddr.sin_addr; /* Client IP address */
- rbp->bp_siaddr = saddr.sin_addr; /* Server IP address */
-
- q = rbp->bp_vend;
- end = (uint8_t *)&rbp[1];
- memcpy(q, rfc1533_cookie, 4);
- q += 4;
-
- if (bc) {
- DPRINTF("%s addr=%08" PRIx32 "\n",
- (dhcp_msg_type == DHCPDISCOVER) ? "offered" : "ack'ed",
- ntohl(daddr.sin_addr.s_addr));
-
- if (dhcp_msg_type == DHCPDISCOVER) {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPOFFER;
- } else /* DHCPREQUEST */ {
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPACK;
- }
-
- if (slirp->bootp_filename)
- snprintf((char *)rbp->bp_file, sizeof(rbp->bp_file), "%s",
- slirp->bootp_filename);
-
- *q++ = RFC2132_SRV_ID;
- *q++ = 4;
- memcpy(q, &saddr.sin_addr, 4);
- q += 4;
-
- *q++ = RFC1533_NETMASK;
- *q++ = 4;
- memcpy(q, &slirp->vnetwork_mask, 4);
- q += 4;
-
- if (!slirp->restricted) {
- *q++ = RFC1533_GATEWAY;
- *q++ = 4;
- memcpy(q, &saddr.sin_addr, 4);
- q += 4;
-
- *q++ = RFC1533_DNS;
- *q++ = 4;
- memcpy(q, &slirp->vnameserver_addr, 4);
- q += 4;
- }
-
- *q++ = RFC2132_LEASE_TIME;
- *q++ = 4;
- val = htonl(LEASE_TIME);
- memcpy(q, &val, 4);
- q += 4;
-
- if (*slirp->client_hostname) {
- val = strlen(slirp->client_hostname);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting host name option.");
- } else {
- *q++ = RFC1533_HOSTNAME;
- *q++ = val;
- memcpy(q, slirp->client_hostname, val);
- q += val;
- }
- }
-
- if (slirp->vdomainname) {
- val = strlen(slirp->vdomainname);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting domain name option.");
- } else {
- *q++ = RFC1533_DOMAINNAME;
- *q++ = val;
- memcpy(q, slirp->vdomainname, val);
- q += val;
- }
- }
-
- if (slirp->tftp_server_name) {
- val = strlen(slirp->tftp_server_name);
- if (q + val + 2 >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting tftp-server-name option.");
- } else {
- *q++ = RFC2132_TFTP_SERVER_NAME;
- *q++ = val;
- memcpy(q, slirp->tftp_server_name, val);
- q += val;
- }
- }
-
- if (slirp->vdnssearch) {
- val = slirp->vdnssearch_len;
- if (q + val >= end) {
- g_warning("DHCP packet size exceeded, "
- "omitting domain-search option.");
- } else {
- memcpy(q, slirp->vdnssearch, val);
- q += val;
- }
- }
- } else {
- static const char nak_msg[] = "requested address not available";
-
- DPRINTF("nak'ed addr=%08" PRIx32 "\n", ntohl(preq_addr.s_addr));
-
- *q++ = RFC2132_MSG_TYPE;
- *q++ = 1;
- *q++ = DHCPNAK;
-
- *q++ = RFC2132_MESSAGE;
- *q++ = sizeof(nak_msg) - 1;
- memcpy(q, nak_msg, sizeof(nak_msg) - 1);
- q += sizeof(nak_msg) - 1;
- }
- assert(q < end);
- *q = RFC1533_END;
-
- daddr.sin_addr.s_addr = 0xffffffffu;
-
- m->m_len = sizeof(struct bootp_t) -
- sizeof(struct ip) - sizeof(struct udphdr);
- udp_output(NULL, m, &saddr, &daddr, IPTOS_LOWDELAY);
-}
-
-void bootp_input(struct mbuf *m)
-{
- struct bootp_t *bp = mtod(m, struct bootp_t *);
-
- if (bp->bp_op == BOOTP_REQUEST) {
- bootp_reply(m->slirp, bp);
- }
-}
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