/*
* Boot a specified local disk. AX specifies the BIOS disk number; or
* -1 in case we should execute INT 18h ("next device.")
*/
__export void local_boot(int16_t ax)
{
com32sys_t ireg, oreg;
int i;
memset(&ireg, 0, sizeof(ireg));
syslinux_force_text_mode();
writestr(LOCALBOOT_MSG);
crlf();
cleanup_hardware();
if (ax == -1) {
/* Hope this does the right thing */
__intcall(0x18, &zero_regs, NULL);
/* If we returned, oh boy... */
kaboom();
}
/*
* Load boot sector from the specified BIOS device and jump to
* it.
*/
memset(&ireg, 0, sizeof ireg);
ireg.edx.b[0] = ax & 0xff;
ireg.eax.w[0] = 0; /* Reset drive */
__intcall(0x13, &ireg, NULL);
memset(&ireg, 0, sizeof(ireg));
ireg.eax.w[0] = 0x0201; /* Read one sector */
ireg.ecx.w[0] = 0x0001; /* C/H/S = 0/0/1 (first sector) */
ireg.ebx.w[0] = OFFS(trackbuf);
ireg.es = SEG(trackbuf);
for (i = 0; i < retry_count; i++) {
__intcall(0x13, &ireg, &oreg);
if (!(oreg.eflags.l & EFLAGS_CF))
break;
}
if (i == retry_count)
kaboom();
cli(); /* Abandon hope, ye who enter here */
memcpy((void *)0x07C00, trackbuf, 512);
ireg.esi.w[0] = OFFS(trackbuf);
ireg.edi.w[0] = 0x07C00;
ireg.edx.w[0] = ax;
call16(local_boot16, &ireg, NULL);
}
/*
* Initialize pxe fs
*
*/
static int pxe_fs_init(struct fs_info *fs)
{
(void)fs; /* drop the compile warning message */
/* Prepare for handling pxe interrupts */
pxe_init_isr();
/* This block size is actually arbitrary... */
fs->sector_shift = fs->block_shift = TFTP_BLOCKSIZE_LG2;
fs->sector_size = fs->block_size = 1 << TFTP_BLOCKSIZE_LG2;
/* Find the PXE stack */
if (pxe_init(false))
kaboom();
/* See if we also have a gPXE stack */
gpxe_init();
/* Network-specific initialization */
network_init();
/* Initialize network-card-specific idle handling */
pxe_idle_init();
/* Our name for the root */
strcpy(fs->cwd_name, "::");
return 0;
}
/**
* Get a fresh packet from a gPXE socket
* @param: inode -> Inode pointer
*
*/
static void gpxe_get_packet(struct inode *inode)
{
struct pxe_pvt_inode *socket = PVT(inode);
static __lowmem struct s_PXENV_FILE_READ file_read;
int err;
while (1) {
file_read.FileHandle = socket->tftp_remoteport;
file_read.Buffer = FAR_PTR(packet_buf);
file_read.BufferSize = PKTBUF_SIZE;
err = pxe_call(PXENV_FILE_READ, &file_read);
if (!err) /* successed */
break;
if (file_read.Status != PXENV_STATUS_TFTP_OPEN)
kaboom();
}
memcpy(socket->tftp_pktbuf, packet_buf, file_read.BufferSize);
socket->tftp_dataptr = socket->tftp_pktbuf;
socket->tftp_bytesleft = file_read.BufferSize;
socket->tftp_filepos += file_read.BufferSize;
if (socket->tftp_bytesleft == 0)
inode->size = socket->tftp_filepos;
/* if we're done here, close the file */
if (inode->size > socket->tftp_filepos)
return;
/* Got EOF, close it */
socket->tftp_goteof = 1;
gpxe_close_file(inode);
}
/* Load the config file, return -1 if failed, or 0 */
static int pxe_open_config(struct com32_filedata *filedata)
{
const char *cfgprefix = "pxelinux.cfg/";
const char *default_str = "default";
char *config_file;
char *last;
int tries = 8;
chdir(path_prefix);
if (DHCPMagic & 0x02) {
/* We got a DHCP option, try it first */
if (open_file(ConfigName, O_RDONLY, filedata) >= 0)
return 0;
}
/*
* Have to guess config file name ...
*/
config_file = stpcpy(ConfigName, cfgprefix);
/* Try loading by UUID */
if (sysappend_strings[SYSAPPEND_SYSUUID]) {
strcpy(config_file, sysappend_strings[SYSAPPEND_SYSUUID]+8);
if (open_file(ConfigName, O_RDONLY, filedata) >= 0)
return 0;
}
/* Try loading by MAC address */
strcpy(config_file, sysappend_strings[SYSAPPEND_BOOTIF]+7);
if (open_file(ConfigName, O_RDONLY, filedata) >= 0)
return 0;
/* Nope, try hexadecimal IP prefixes... */
sprintf(config_file, "%08X", ntohl(IPInfo.myip));
last = &config_file[8];
while (tries) {
*last = '\0'; /* Zero-terminate string */
if (open_file(ConfigName, O_RDONLY, filedata) >= 0)
return 0;
last--; /* Drop one character */
tries--;
};
/* Final attempt: "default" string */
strcpy(config_file, default_str);
if (open_file(ConfigName, O_RDONLY, filedata) >= 0)
return 0;
ddprintf("%-68s\n", "Unable to locate configuration file");
kaboom();
}
int main() {
std::cout << "Hello, world" << std::endl;
std::cout << "The answer is: "
<< get_answer_to_the_question_of_life_universe_and_everything()
<< std::endl;
try {
kaboom();
}
catch (std::exception &e) {
std::cout << "I just saved the world!" << std::endl;
std::cout << "Error was: " << e.what() << std::endl;
}
return 0;
}
/*
* Get a fresh packet if the buffer is drained, and we haven't hit
* EOF yet. The buffer should be filled immediately after draining!
*/
static void tftp_get_packet(struct inode *inode)
{
uint16_t last_pkt;
const uint8_t *timeout_ptr;
uint8_t timeout;
uint16_t buffersize;
uint16_t serial;
jiffies_t oldtime;
struct tftp_packet *pkt = NULL;
uint16_t buf_len;
struct pxe_pvt_inode *socket = PVT(inode);
uint16_t src_port;
uint32_t src_ip;
int err;
/*
* Start by ACKing the previous packet; this should cause
* the next packet to be sent.
*/
timeout_ptr = TimeoutTable;
timeout = *timeout_ptr++;
oldtime = jiffies();
ack_again:
ack_packet(inode, socket->tftp_lastpkt);
while (timeout) {
buf_len = socket->tftp_blksize + 4;
err = core_udp_recv(socket, socket->tftp_pktbuf, &buf_len,
&src_ip, &src_port);
if (err) {
jiffies_t now = jiffies();
if (now-oldtime >= timeout) {
oldtime = now;
timeout = *timeout_ptr++;
if (!timeout)
break;
goto ack_again;
}
continue;
}
if (buf_len < 4) /* Bad size for a DATA packet */
continue;
pkt = (struct tftp_packet *)(socket->tftp_pktbuf);
if (pkt->opcode != TFTP_DATA) /* Not a data packet */
continue;
/* If goes here, recevie OK, break */
break;
}
/* time runs out */
if (timeout == 0)
kaboom();
last_pkt = socket->tftp_lastpkt;
last_pkt++;
serial = ntohs(pkt->serial);
if (serial != last_pkt) {
/*
* Wrong packet, ACK the packet and try again.
* This is presumably because the ACK got lost,
* so the server just resent the previous packet.
*/
#if 0
printf("Wrong packet, wanted %04x, got %04x\n", \
htons(last_pkt), htons(*(uint16_t *)(data+2)));
#endif
goto ack_again;
}
/* It's the packet we want. We're also EOF if the size < blocksize */
socket->tftp_lastpkt = last_pkt; /* Update last packet number */
buffersize = buf_len - 4; /* Skip TFTP header */
socket->tftp_dataptr = socket->tftp_pktbuf + 4;
socket->tftp_filepos += buffersize;
socket->tftp_bytesleft = buffersize;
if (buffersize < socket->tftp_blksize) {
/* it's the last block, ACK packet immediately */
ack_packet(inode, serial);
/* Make sure we know we are at end of file */
inode->size = socket->tftp_filepos;
socket->tftp_goteof = 1;
tftp_close_file(inode);
}
}
int
detonate(struct nukstr *np, coord x, coord y, int airburst)
{
int nuketype = np->nuk_type;
struct nchrstr *ncp;
struct plnstr plane;
struct sctstr sect;
struct shpstr ship;
struct lndstr land;
struct nukstr nuke;
natid own;
int type;
int damage;
int fallout;
int rad;
struct nstr_sect ns;
struct nstr_item ni;
int changed = 0;
pr("Releasing RV's for %s detonation...\n",
airburst ? "airburst" : "groundburst");
getsect(x, y, §);
ncp = &nchr[nuketype];
kaboom(x, y, ncp->n_blast);
rad = ncp->n_blast;
if (!airburst)
rad = rad * 2 / 3;
if (sect.sct_type == SCT_WATER)
rad = 0; /* Nukes falling on water affect only 1 sector */
np->nuk_effic = 0;
putnuke(np->nuk_uid, np);
snxtsct_dist(&ns, x, y, rad);
while (nxtsct(&ns, §)) {
own = sect.sct_own;
type = sect.sct_type;
if ((damage = nukedamage(ncp, ns.curdist, airburst)) <= 0)
continue;
if (type == SCT_SANCT) {
pr("bounced off %s\n", xyas(ns.x, ns.y, player->cnum));
mpr(own, "%s nuclear device bounced off %s\n",
cname(player->cnum), xyas(ns.x, ns.y, own));
nreport(player->cnum, N_NUKE, own, 1);
continue;
}
sect_damage(§, damage);
if (opt_FALLOUT) {
fallout = sect.sct_fallout;
if (ncp->n_flags & N_NEUT)
fallout += damage * 30;
else
fallout += damage * 3;
sect.sct_fallout = MIN(fallout, FALLOUT_MAX);
}
if (damage > 100) {
sect.sct_oldown = 0;
sect.sct_own = 0;
if (type == SCT_WATER || type == SCT_BSPAN ||
type == SCT_BTOWER) {
if (type != SCT_WATER) {
pr("left nothing but water in %s\n",
xyas(ns.x, ns.y, player->cnum));
if (own != player->cnum)
mpr(own,
"%s nuclear device left nothing but water in %s\n",
cname(player->cnum), xyas(ns.x, ns.y, own));
sect.sct_newtype = SCT_WATER;
sect.sct_type = SCT_WATER;
}
} else {
sect.sct_newtype = SCT_WASTE;
sect.sct_type = SCT_WASTE;
pr("turned %s into a radioactive wasteland\n",
xyas(ns.x, ns.y, player->cnum));
if (own != player->cnum)
mpr(own,
"%s nuclear device turned %s into a radioactive wasteland\n",
cname(player->cnum), xyas(ns.x, ns.y, own));
}
changed |= map_set(player->cnum, sect.sct_x, sect.sct_y,
dchr[sect.sct_type].d_mnem, 0);
} else {
pr("did %d%% damage in %s\n",
damage, xyas(ns.x, ns.y, player->cnum));
if (own != player->cnum)
mpr(own, "%s nuclear device did %d%% damage in %s\n",
cname(player->cnum), damage, xyas(ns.x, ns.y, own));
}
(void)putsect(§);
if (type != SCT_WATER)
nreport(player->cnum, N_NUKE, own, 1);
}
if (changed)
writebmap(player->cnum);
snxtitem_dist(&ni, EF_PLANE, x, y, rad);
while (nxtitem(&ni, &plane)) {
if ((own = plane.pln_own) == 0)
continue;
if (plane.pln_flags & PLN_LAUNCHED)
continue;
damage = nukedamage(ncp, ni.curdist, airburst) - plane.pln_harden;
if (damage <= 0)
continue;
if (plane.pln_ship >= 0) {
/* Are we on a sub? */
getship(plane.pln_ship, &ship);
if (mchr[(int)ship.shp_type].m_flags & M_SUB) {
struct sctstr sect1;
/* Should we damage this sub? */
getsect(ship.shp_x, ship.shp_y, §1);
if (sect1.sct_type == SCT_BSPAN ||
sect1.sct_type == SCT_BTOWER ||
sect1.sct_type == SCT_WATER) {
/* Ok, we're not in a harbor or trapped
inland. Now, did we get pasted
directly? */
if (ship.shp_x != x || ship.shp_y != y) {
/* Nope, so don't mess with it */
continue;
}
}
}
}
planedamage(&plane, damage);
if (own == player->cnum) {
pr("%s at %s reports %d%% damage\n",
prplane(&plane),
xyas(plane.pln_x, plane.pln_y, player->cnum), damage);
} else {
mpr(own, "%s nuclear device did %d%% damage to %s at %s\n",
cname(player->cnum), damage,
prplane(&plane), xyas(plane.pln_x, plane.pln_y, own));
}
putplane(ni.cur, &plane);
}
snxtitem_dist(&ni, EF_LAND, x, y, rad);
while (nxtitem(&ni, &land)) {
if ((own = land.lnd_own) == 0)
continue;
if ((damage = nukedamage(ncp, ni.curdist, airburst)) <= 0)
continue;
if (land.lnd_ship >= 0) {
/* Are we on a sub? */
getship(land.lnd_ship, &ship);
if (mchr[(int)ship.shp_type].m_flags & M_SUB) {
struct sctstr sect1;
/* Should we damage this sub? */
getsect(ship.shp_x, ship.shp_y, §1);
if (sect1.sct_type == SCT_BSPAN ||
sect1.sct_type == SCT_BTOWER ||
sect1.sct_type == SCT_WATER) {
/* Ok, we're not in a harbor or trapped
inland. Now, did we get pasted
directly? */
if (ship.shp_x != x || ship.shp_y != y) {
/* Nope, so don't mess with it */
continue;
}
}
}
}
land_damage(&land, damage);
if (own == player->cnum) {
pr("%s at %s reports %d%% damage\n",
prland(&land), xyas(land.lnd_x, land.lnd_y, player->cnum),
damage);
} else {
mpr(own, "%s nuclear device did %d%% damage to %s at %s\n",
cname(player->cnum), damage,
prland(&land), xyas(land.lnd_x, land.lnd_y, own));
}
putland(land.lnd_uid, &land);
}
snxtitem_dist(&ni, EF_SHIP, x, y, rad);
while (nxtitem(&ni, &ship)) {
if ((own = ship.shp_own) == 0)
continue;
if ((damage = nukedamage(ncp, ni.curdist, airburst)) <= 0)
continue;
if (mchr[(int)ship.shp_type].m_flags & M_SUB) {
struct sctstr sect1;
/* Should we damage this sub? */
getsect(ship.shp_x, ship.shp_y, §1);
if (sect1.sct_type == SCT_BSPAN ||
sect1.sct_type == SCT_BTOWER ||
sect1.sct_type == SCT_WATER) {
/* Ok, we're not in a harbor or trapped
inland. Now, did we get pasted
directly? */
if (ship.shp_x != x || ship.shp_y != y) {
/* Nope, so don't mess with it */
continue;
}
}
}
ship_damage(&ship, damage);
if (own == player->cnum) {
pr("%s at %s reports %d%% damage\n",
prship(&ship), xyas(ship.shp_x, ship.shp_y, player->cnum),
damage);
} else {
mpr(own, "%s nuclear device did %d%% damage to %s at %s\n",
cname(player->cnum), damage, prship(&ship),
xyas(ship.shp_x, ship.shp_y, own));
}
putship(ship.shp_uid, &ship);
}
snxtitem_dist(&ni, EF_NUKE, x, y, rad);
while (nxtitem(&ni, &nuke)) {
if ((own = nuke.nuk_own) == 0)
continue;
if ((damage = nukedamage(ncp, ni.curdist, airburst)) <= 0)
continue;
if (!pct_chance(damage))
continue;
nuke.nuk_effic = 0;
if (own == player->cnum) {
pr("%s at %s destroyed\n",
prnuke(&nuke), xyas(nuke.nuk_x, nuke.nuk_y, player->cnum));
} else {
mpr(own, "%s nuclear device destroyed %s at %s\n",
cname(player->cnum), prnuke(&nuke),
xyas(nuke.nuk_x, nuke.nuk_y, own));
}
putnuke(ni.cur, &nuke);
}
return nukedamage(ncp, 0, airburst);
}
__export __noreturn __bad_SEG(const volatile void *p)
{
dprintf("SEG() passed an invalid pointer: %p\n", p);
kaboom();
}
int game( int nlevel ){
LSDB lsdb;
lsdb.lives = 3;
lsdb.bombs = 0;
lsdb.score = 0;
lsdb.diamonds = 0;
int die;
gps player;
int count = 0;
int new_bomb = 0;
int level = nlevel;
int level_score = 0;
int new_bomb_x, new_bomb_y;
char map[MAP_HSIZE][MAP_WSIZE];
erase();
load_level( map, level, &player, &lsdb.diamonds );
draw_all( map, HZ, lsdb );
nodelay( stdscr, TRUE );
int run = 1;
while( run ){
count++;
die = 0;
switch( tolower( getch() ) ){
case KEY_UP : if( move_player( map, &player, UP , &lsdb) == -1 ) die = 1; break;
case KEY_DOWN : if( move_player( map, &player, DOWN , &lsdb) == -1 ) die = 1; break;
case KEY_LEFT : if( move_player( map, &player, LEFT , &lsdb) == -1 ) die = 1; break;
case KEY_RIGHT: if( move_player( map, &player, RIGHT, &lsdb) == -1 ) die = 1; break;
case 'k' : die = 1; break;
case 'h' : help() ; break;
case 27 : run = false ; break;
case 'q' : if(msgbox("Quit game == 'q' ? yes : no ")== 'q') run = false; break;
case 'b' :
if( lsdb.bombs ){
if( new_bomb == 0 ){
lsdb.bombs--;
new_bomb = 1;
new_bomb_y = player.y;
new_bomb_x = player.x;
}
} break;
case 't' :
if( new_bomb ){
new_bomb = 0;
die = 1;
} else if( kaboom( map ) ) die = 1;
break;
default : break;
} // switch( ch )
if( new_bomb ){
if( player.y != new_bomb_y || player.x != new_bomb_x ){
new_bomb = 0;
map[new_bomb_y][new_bomb_x] = BOMB;
}
}
if( count >= 4 ){
if( do_the_monster_dance( map, player ) ) die = 1;
count = 0;
}
if( gravity( map, &new_bomb ) ) die = 1;
if( die ){
kill_player(map, player );
lsdb.lives--;
lsdb.bombs = 0;
new_bomb = 0;
if( lsdb.lives == 0 ){
if( msgbox( "continue == 'q' ? no : yes " ) != 'q' ) return level;
else return 0 ;
}
lsdb.score = level_score;
load_level( map, level, &player, &lsdb.diamonds );
}
if( lsdb.diamonds <= 0 ){
level_score = lsdb.score;
load_level( map, ++level, &player, &lsdb.diamonds );
}
draw_all( map, HZ, lsdb );
} // while( run )
nodelay( stdscr, FALSE );
return 0;
}
