static int preprocess()
{
const char* flag = arg_getflag();
while (flag != NULL)
{
if (matches(flag, "--file"))
{
g_filename = arg_getflagarg();
if (g_filename == NULL)
{
puts("** Usage: --file filename");
puts(HELP_MSG);
return 1;
}
}
else if (matches(flag, "--os"))
{
const char* os = arg_getflagarg();
if (os == NULL || !os_set(os))
{
puts("** Usage: --os osname");
puts(HELP_MSG);
return 1;
}
}
else if (matches(flag, "--version"))
{
printf("premake (Premake Build Script Generator) %s\n", VERSION);
}
flag = arg_getflag();
}
return 1;
}
// ------------------------------------------------
// Function: dhcp_send()
// ------------------------------------------------
// Input: Message type
// TRUE to broadcast answer
// Output: TRUE if succesful
// ------------------------------------------------
// Description: Send a DHCP message
// ------------------------------------------------
BOOL dhcp_send(BYTE type, BOOL broadcast)
{
PPBUF buf;
buf = udp_new(SOCKET_DHCP);
if(buf == NULL) return FALSE;
DHCP(buf->data)->op = 1; // BOOTREQUEST
DHCP(buf->data)->htype = 1; // ETH 10MBPS
DHCP(buf->data)->hlen = 6; // 6 bytes ETH MAC
DHCP(buf->data)->hops = 0;
DHCP(buf->data)->xid = xid.d;
DHCP(buf->data)->secs = 0;
if(broadcast) {
DHCP(buf->data)->flags = HTONS(0x8000); // server must broadcast answer
DHCP(buf->data)->ci.d = 0;
} else {
DHCP(buf->data)->flags = 0; // server must send unicast answer
DHCP(buf->data)->ci.d = ip_local[INTERFACE_ETH].d;
}
DHCP(buf->data)->yi.d = 0;
DHCP(buf->data)->gi.d = 0;
DHCP(buf->data)->si.d = ip_dhcp.d;
os_set((BYTE *)(&DHCP(buf->data)->chaddr), 0, 16+64+128);
os_copy((BYTE *)&mac_local,
(BYTE *)(&DHCP(buf->data)->chaddr),
sizeof(MACADDR));
// --------------
// insert options
// --------------
skip(buf, BOOTP_HDR_SIZE);
buf->size = BOOTP_HDR_SIZE;
write_uint32(buf, 0x63825363); // magic cookie
write_byte(buf, DHCP_OPT_TYPE); // DHCP message type
write_byte(buf, 1);
write_byte(buf, type);
write_byte(buf, DHCP_OPT_ID); // DHCP source ID
write_byte(buf, 7);
write_byte(buf, 1);
write_buf(buf, (BYTE *)&mac_local, sizeof(MACADDR));
write_byte(buf, DHCP_OPT_IP); // Request IP address
write_byte(buf, 4);
write_ip(buf, ip_tmp);
#ifdef _DNS
write_byte(buf, DHCP_OPT_REQ); // Request options
write_byte(buf, 3);
write_byte(buf, DHCP_OPT_MASK);
write_byte(buf, DHCP_OPT_ROUTER);
write_byte(buf, DHCP_OPT_DNS);
#else
write_byte(buf, DHCP_OPT_REQ); // Request options
write_byte(buf, 2);
write_byte(buf, DHCP_OPT_MASK);
write_byte(buf, DHCP_OPT_ROUTER);
#endif
write_byte(buf, DHCP_OPT_END); // done with options
udp_send(buf);
release_buffer(buf);
return TRUE;
}
