Revision 460fec67 slirp/bootp.c
| b/slirp/bootp.c | ||
|---|---|---|
| 25 | 25 |
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| 26 | 26 |
/* XXX: only DHCP is supported */ |
| 27 | 27 |
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#define NB_ADDR 16 |
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#define LEASE_TIME (24 * 3600) |
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typedef struct {
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uint8_t allocated; |
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uint8_t macaddr[6]; |
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} BOOTPClient; |
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static BOOTPClient bootp_clients[NB_ADDR]; |
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char *bootp_filename; |
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static const uint8_t rfc1533_cookie[] = { RFC1533_COOKIE };
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#ifdef DEBUG |
| ... | ... | |
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#define dprintf(fmt, ...) |
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#endif |
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static BOOTPClient *get_new_addr(struct in_addr *paddr, |
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static BOOTPClient *get_new_addr(Slirp *slirp, struct in_addr *paddr,
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const uint8_t *macaddr) |
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{
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BOOTPClient *bc; |
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int i; |
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for(i = 0; i < NB_ADDR; i++) {
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bc = &bootp_clients[i]; |
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for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
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bc = &slirp->bootp_clients[i];
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if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) |
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goto found; |
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} |
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return NULL; |
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found: |
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bc = &bootp_clients[i]; |
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bc = &slirp->bootp_clients[i];
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bc->allocated = 1; |
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paddr->s_addr = vdhcp_startaddr.s_addr + htonl(i); |
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paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
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return bc; |
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} |
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static BOOTPClient *request_addr(const struct in_addr *paddr, |
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static BOOTPClient *request_addr(Slirp *slirp, const struct in_addr *paddr,
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const uint8_t *macaddr) |
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{
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uint32_t req_addr = ntohl(paddr->s_addr); |
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uint32_t dhcp_addr = ntohl(vdhcp_startaddr.s_addr); |
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uint32_t dhcp_addr = ntohl(slirp->vdhcp_startaddr.s_addr);
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BOOTPClient *bc; |
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if (req_addr >= dhcp_addr && |
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req_addr < (dhcp_addr + NB_ADDR)) {
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bc = &bootp_clients[req_addr - dhcp_addr]; |
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req_addr < (dhcp_addr + NB_BOOTP_CLIENTS)) {
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bc = &slirp->bootp_clients[req_addr - dhcp_addr];
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if (!bc->allocated || !memcmp(macaddr, bc->macaddr, 6)) {
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bc->allocated = 1; |
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return bc; |
| ... | ... | |
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return NULL; |
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} |
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static BOOTPClient *find_addr(struct in_addr *paddr, const uint8_t *macaddr) |
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static BOOTPClient *find_addr(Slirp *slirp, struct in_addr *paddr, |
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const uint8_t *macaddr) |
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{
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BOOTPClient *bc; |
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int i; |
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for(i = 0; i < NB_ADDR; i++) {
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if (!memcmp(macaddr, bootp_clients[i].macaddr, 6)) |
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for(i = 0; i < NB_BOOTP_CLIENTS; i++) {
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if (!memcmp(macaddr, slirp->bootp_clients[i].macaddr, 6))
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goto found; |
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} |
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return NULL; |
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found: |
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bc = &bootp_clients[i]; |
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bc = &slirp->bootp_clients[i];
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bc->allocated = 1; |
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paddr->s_addr = vdhcp_startaddr.s_addr + htonl(i); |
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paddr->s_addr = slirp->vdhcp_startaddr.s_addr + htonl(i);
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return bc; |
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} |
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|
| ... | ... | |
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} |
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} |
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static void bootp_reply(const struct bootp_t *bp) |
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static void bootp_reply(Slirp *slirp, const struct bootp_t *bp)
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{
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BOOTPClient *bc = NULL; |
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struct mbuf *m; |
| ... | ... | |
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dhcp_msg_type != DHCPREQUEST) |
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return; |
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/* XXX: this is a hack to get the client mac address */ |
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memcpy(client_ethaddr, bp->bp_hwaddr, 6); |
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memcpy(slirp->client_ethaddr, bp->bp_hwaddr, 6);
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if ((m = m_get()) == NULL) |
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m = m_get(slirp); |
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if (!m) {
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return; |
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} |
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m->m_data += IF_MAXLINKHDR; |
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rbp = (struct bootp_t *)m->m_data; |
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m->m_data += sizeof(struct udpiphdr); |
| ... | ... | |
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|
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if (dhcp_msg_type == DHCPDISCOVER) {
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if (preq_addr) {
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bc = request_addr(preq_addr, client_ethaddr);
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bc = request_addr(slirp, preq_addr, slirp->client_ethaddr);
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if (bc) {
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daddr.sin_addr = *preq_addr; |
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} |
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} |
| 192 | 184 |
if (!bc) {
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new_addr: |
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bc = get_new_addr(&daddr.sin_addr, client_ethaddr);
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bc = get_new_addr(slirp, &daddr.sin_addr, slirp->client_ethaddr);
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if (!bc) {
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dprintf("no address left\n");
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return; |
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} |
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} |
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memcpy(bc->macaddr, client_ethaddr, 6); |
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memcpy(bc->macaddr, slirp->client_ethaddr, 6);
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} else if (preq_addr) {
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bc = request_addr(preq_addr, client_ethaddr);
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bc = request_addr(slirp, preq_addr, slirp->client_ethaddr);
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if (bc) {
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daddr.sin_addr = *preq_addr; |
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memcpy(bc->macaddr, client_ethaddr, 6); |
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memcpy(bc->macaddr, slirp->client_ethaddr, 6);
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} else {
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daddr.sin_addr.s_addr = 0; |
| 208 | 200 |
} |
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} else {
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bc = find_addr(&daddr.sin_addr, bp->bp_hwaddr); |
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bc = find_addr(slirp, &daddr.sin_addr, bp->bp_hwaddr);
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| 211 | 203 |
if (!bc) {
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/* if never assigned, behaves as if it was already |
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assigned (windows fix because it remembers its address) */ |
| ... | ... | |
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} |
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} |
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saddr.sin_addr = vhost_addr; |
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saddr.sin_addr = slirp->vhost_addr;
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saddr.sin_port = htons(BOOTP_SERVER); |
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|
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daddr.sin_port = htons(BOOTP_CLIENT); |
| ... | ... | |
| 248 | 240 |
*q++ = DHCPACK; |
| 249 | 241 |
} |
| 250 | 242 |
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if (bootp_filename) |
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if (slirp->bootp_filename)
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snprintf((char *)rbp->bp_file, sizeof(rbp->bp_file), "%s", |
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bootp_filename); |
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slirp->bootp_filename);
|
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| 254 | 246 |
|
| 255 | 247 |
*q++ = RFC2132_SRV_ID; |
| 256 | 248 |
*q++ = 4; |
| ... | ... | |
| 259 | 251 |
|
| 260 | 252 |
*q++ = RFC1533_NETMASK; |
| 261 | 253 |
*q++ = 4; |
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memcpy(q, &vnetwork_mask, 4); |
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memcpy(q, &slirp->vnetwork_mask, 4);
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| 263 | 255 |
q += 4; |
| 264 | 256 |
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if (!slirp_restrict) {
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| 257 |
if (!slirp->restricted) {
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*q++ = RFC1533_GATEWAY; |
| 267 | 259 |
*q++ = 4; |
| 268 | 260 |
memcpy(q, &saddr.sin_addr, 4); |
| ... | ... | |
| 270 | 262 |
|
| 271 | 263 |
*q++ = RFC1533_DNS; |
| 272 | 264 |
*q++ = 4; |
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memcpy(q, &vnameserver_addr, 4); |
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memcpy(q, &slirp->vnameserver_addr, 4);
|
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| 274 | 266 |
q += 4; |
| 275 | 267 |
} |
| 276 | 268 |
|
| ... | ... | |
| 280 | 272 |
memcpy(q, &val, 4); |
| 281 | 273 |
q += 4; |
| 282 | 274 |
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if (*slirp_hostname) {
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val = strlen(slirp_hostname); |
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if (*slirp->client_hostname) {
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val = strlen(slirp->client_hostname);
|
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| 285 | 277 |
*q++ = RFC1533_HOSTNAME; |
| 286 | 278 |
*q++ = val; |
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memcpy(q, slirp_hostname, val); |
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memcpy(q, slirp->client_hostname, val);
|
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| 288 | 280 |
q += val; |
| 289 | 281 |
} |
| 290 | 282 |
} else {
|
| ... | ... | |
| 315 | 307 |
struct bootp_t *bp = mtod(m, struct bootp_t *); |
| 316 | 308 |
|
| 317 | 309 |
if (bp->bp_op == BOOTP_REQUEST) {
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bootp_reply(bp); |
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bootp_reply(m->slirp, bp);
|
|
| 319 | 311 |
} |
| 320 | 312 |
} |
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