void print_dhcp_pkt_all(void)
{
pxe_bootp_t *p;
size_t len;
int i;
int ptype[3] = {PXENV_PACKET_TYPE_DHCP_DISCOVER, PXENV_PACKET_TYPE_DHCP_ACK, PXENV_PACKET_TYPE_CACHED_REPLY};
for (i = 0; i < 3; i++) {
if (!pxe_get_cached_info(ptype[i],
(void **)&(p), &(len))) {
dprintf("Got packet #%d/%d\n", (i + 1), ptype[i]);
print_pxe_bootp_t(p, len);
pressanykey();
}
}
}
void mboot_solaris_dhcp_hack(void)
{
void *dhcpdata;
size_t dhcplen;
if (syslinux_derivative_info()->c.filesystem != SYSLINUX_FS_PXELINUX)
return;
if (!pxe_get_cached_info(PXENV_PACKET_TYPE_DHCP_ACK, &dhcpdata, &dhcplen)) {
mbinfo.drives_addr = map_data(dhcpdata, dhcplen, 4, 0);
if (mbinfo.drives_addr) {
mbinfo.drives_length = dhcplen;
mbinfo.boot_device = 0x20ffffff;
mbinfo.flags =
(mbinfo.flags & ~MB_INFO_DRIVE_INFO) | MB_INFO_BOOTDEV;
}
}
}
void OS::get_hostname(void)
{
char *dhcpdata;
size_t dhcplen;
xassert(pxe_get_cached_info(PXENV_PACKET_TYPE_DHCP_ACK, (void **)&dhcpdata, &dhcplen) == 0);
/* Save MyIP for later (in udp_open) */
ip.s_addr = ((pxe_bootp_t *)dhcpdata)->yip;
memcpy(mac, ((pxe_bootp_t *)dhcpdata)->CAddr, sizeof(mac));
/* Skip standard fields, as hostname is an option */
unsigned offset = 4 + offsetof(pxe_bootp_t, vendor.d);
while (offset < dhcplen) {
int code = dhcpdata[offset];
int len = dhcpdata[offset + 1];
/* Sanity-check length */
if (len == 0)
break;
/* Skip non-hostname options */
if (code != 12) {
offset += 2 + len;
continue;
}
/* Sanity-check length */
if ((offset + len) > dhcplen)
break;
/* Create a private copy */
hostname = strndup(&dhcpdata[offset + 2], len);
xassert(hostname);
break;
}
}
