/*
* Two passes on data: first to get checksum, second
* to output the data using checksum to start random #s
*/
int
save(const char *outfile)
{
FILE *out;
struct savestruct *p;
char *s;
long sum;
int i;
crc_start();
for (p = save_array; p->address != NULL; p++)
sum = crc(p->address, p->width);
srandom_deterministic((int) sum);
if ((out = fopen(outfile, "wb")) == NULL) {
fprintf(stderr,
"Hmm. The name \"%s\" appears to be magically blocked.\n",
outfile);
return 1;
}
fwrite(&sum, sizeof(sum), 1, out); /* Here's the random() key */
for (p = save_array; p->address != NULL; p++) {
for (s = p->address, i = 0; i < p->width; i++, s++)
*s = (*s ^ random()) & 0xFF; /* Slightly obfuscate */
fwrite(p->address, p->width, 1, out);
}
fclose(out);
return 0;
}
int
restore(const char *infile)
{
FILE *in;
struct savestruct *p;
char *s;
long sum, cksum;
int i;
if ((in = fopen(infile, "rb")) == NULL) {
fprintf(stderr,
"Hmm. The file \"%s\" appears to be magically blocked.\n",
infile);
return 1;
}
fread(&sum, sizeof(sum), 1, in); /* Get the seed */
srandom_deterministic((unsigned int) sum);
for (p = save_array; p->address != NULL; p++) {
fread(p->address, p->width, 1, in);
for (s = p->address, i = 0; i < p->width; i++, s++)
*s = (*s ^ random()) & 0xFF; /* deobfuscate */
}
fclose(in);
crc_start(); /* See if she cheated */
for (p = save_array; p->address != NULL; p++)
cksum = crc(p->address, p->width);
if (sum != cksum) /* Tsk tsk */
return 2; /* Altered the file */
/* We successfully restored, so this really was a save file */
/* Get rid of the file, but don't bother checking that we did */
return 0;
}
void
setseed(const char *seed)
{
seeded = 1;
srandom_deterministic(atol(seed));
}
int
main(int argc, char **argv)
{
extern char *__progname;
int fd;
#ifdef CHDIR
char *dir;
#endif
hackpid = getpid();
#ifdef CHDIR /* otherwise no chdir() */
/*
* See if we must change directory to the playground.
* (Perhaps hack runs suid and playground is inaccessible
* for the player.)
* The environment variable HACKDIR is overridden by a
* -d command line option (must be the first option given)
*/
dir = getenv("HACKDIR");
if(argc > 1 && !strncmp(argv[1], "-d", 2)) {
argc--;
argv++;
dir = argv[0]+2;
if(*dir == '=' || *dir == ':') dir++;
if(!*dir && argc > 1) {
argc--;
argv++;
dir = argv[0];
}
if(!*dir)
error("Flag -d must be followed by a directory name.");
}
#endif
/*
* Who am i? Algorithm: 1. Use name as specified in HACKOPTIONS
* 2. Use $LOGNAME or $USER (if 1. fails)
* 3. Use getlogin() (if 2. fails)
* The resulting name is overridden by command line options.
* If everything fails, or if the resulting name is some generic
* account like "games", "play", "player", "hack" then eventually
* we'll ask him.
* Note that we trust him here; it is possible to play under
* somebody else's name.
*/
{ char *s;
initoptions();
if(!*plname && (s = getenv("LOGNAME")))
(void) strlcpy(plname, s, sizeof(plname));
if(!*plname && (s = getenv("USER")))
(void) strlcpy(plname, s, sizeof(plname));
if(!*plname && (s = getlogin()))
(void) strlcpy(plname, s, sizeof(plname));
}
/*
* Now we know the directory containing 'record' and
* may do a prscore().
*/
if(argc > 1 && !strncmp(argv[1], "-s", 2)) {
#ifdef CHDIR
chdirx(dir,0);
#endif
prscore(argc, argv);
return 0;
}
/*
* It seems he really wants to play.
* Remember tty modes, to be restored on exit.
*/
gettty();
setvbuf(stdout, obuf, _IOFBF, sizeof obuf);
umask(007);
startup();
cls();
u.uhp = 1; /* prevent RIP on early quits */
u.ux = FAR; /* prevent nscr() */
(void) signal(SIGHUP, hackhangup);
/*
* Find the creation date of this game,
* so as to avoid restoring outdated savefiles.
*/
gethdate(__progname);
/*
* We cannot do chdir earlier, otherwise gethdate will fail.
*/
#ifdef CHDIR
chdirx(dir,1);
#endif
/*
* Process options.
*/
while(argc > 1 && argv[1][0] == '-'){
argv++;
argc--;
switch(argv[0][1]){
#ifdef WIZARD
case 'D':
/* if(!strcmp(getlogin(), WIZARD)) */
wizard = TRUE;
/* else
printf("Sorry.\n"); */
break;
#endif
#ifdef NEWS
case 'n':
flags.nonews = TRUE;
break;
#endif
case 'u':
if(argv[0][2]) {
(void) strlcpy(plname, argv[0]+2, sizeof(plname));
} else if(argc > 1) {
argc--;
argv++;
(void) strlcpy(plname, argv[0], sizeof(plname));
} else
printf("Player name expected after -u\n");
break;
default:
/* allow -T for Tourist, etc. */
(void) strlcpy(pl_character, argv[0]+1, sizeof(pl_character));
/* printf("Unknown option: %s\n", *argv); */
}
}
if(argc > 1)
locknum = atoi(argv[1]);
#ifdef MAX_NR_OF_PLAYERS
if(!locknum || locknum > MAX_NR_OF_PLAYERS)
locknum = MAX_NR_OF_PLAYERS;
#endif
#ifdef DEF_PAGER
if(!(catmore = getenv("HACKPAGER")) && !(catmore = getenv("PAGER")))
catmore = DEF_PAGER;
#endif
#ifdef MAIL
getmailstatus();
#endif
#ifdef WIZARD
if(wizard) (void) strlcpy(plname, "wizard", sizeof plname); else
#endif
if(!*plname || !strncmp(plname, "player", 4)
|| !strncmp(plname, "games", 4))
askname();
plnamesuffix(); /* strip suffix from name; calls askname() */
/* again if suffix was whole name */
/* accepts any suffix */
#ifdef WIZARD
if(!wizard) {
#endif
/*
* check for multiple games under the same name
* (if !locknum) or check max nr of players (otherwise)
*/
(void) signal(SIGQUIT,SIG_IGN);
(void) signal(SIGINT,SIG_IGN);
if(!locknum)
(void) strlcpy(lock,plname,sizeof lock);
getlock(); /* sets lock if locknum != 0 */
#ifdef WIZARD
} else {
char *sfoo;
(void) strlcpy(lock,plname,sizeof lock);
if ((sfoo = getenv("MAGIC")))
while(*sfoo) {
switch(*sfoo++) {
case 'n': (void) srandom_deterministic(*sfoo++);
break;
}
}
if ((sfoo = getenv("GENOCIDED"))) {
if(*sfoo == '!'){
struct permonst *pm = mons;
char *gp = genocided;
while(pm < mons+CMNUM+2){
if(!strchr(sfoo, pm->mlet))
*gp++ = pm->mlet;
pm++;
}
*gp = 0;
} else
strlcpy(genocided, sfoo, sizeof genocided);
strlcpy(fut_geno, genocided, sizeof fut_geno);
}
}
#endif
setftty();
(void) snprintf(SAVEF, sizeof SAVEF, "save/%u%s", getuid(), plname);
regularize(SAVEF+5); /* avoid . or / in name */
if((fd = open(SAVEF, O_RDONLY)) >= 0 &&
(uptodate(fd) || unlink(SAVEF) == 666)) {
(void) signal(SIGINT,done1);
pline("Restoring old save file...");
(void) fflush(stdout);
if(!dorecover(fd))
goto not_recovered;
pline("Hello %s, welcome to %s!", plname, gamename);
flags.move = 0;
} else {
not_recovered:
fobj = fcobj = invent = 0;
fmon = fallen_down = 0;
ftrap = 0;
fgold = 0;
flags.ident = 1;
init_objects();
u_init();
(void) signal(SIGINT,done1);
mklev();
u.ux = xupstair;
u.uy = yupstair;
(void) inshop();
setsee();
flags.botlx = 1;
makedog();
{ struct monst *mtmp;
if ((mtmp = m_at(u.ux, u.uy)))
mnexto(mtmp); /* riv05!a3 */
}
seemons();
#ifdef NEWS
if(flags.nonews || !readnews())
/* after reading news we did docrt() already */
#endif
docrt();
/* give welcome message before pickup messages */
pline("Hello %s, welcome to %s!", plname, gamename);
pickup(1);
read_engr_at(u.ux,u.uy);
flags.move = 1;
}
flags.moonphase = phase_of_the_moon();
if(flags.moonphase == FULL_MOON) {
pline("You are lucky! Full moon tonight.");
u.uluck++;
} else if(flags.moonphase == NEW_MOON) {
pline("Be careful! New moon tonight.");
}
initrack();
for(;;) {
if(flags.move) { /* actual time passed */
settrack();
if(moves%2 == 0 ||
(!(Fast & ~INTRINSIC) && (!Fast || rn2(3)))) {
extern struct monst *makemon();
movemon();
if(!rn2(70))
(void) makemon((struct permonst *)0, 0, 0);
}
if(Glib) glibr();
hacktimeout();
++moves;
if(flags.time) flags.botl = 1;
if(u.uhp < 1) {
pline("You die...");
done("died");
}
if(u.uhp*10 < u.uhpmax && moves-wailmsg > 50){
wailmsg = moves;
if(u.uhp == 1)
pline("You hear the wailing of the Banshee...");
else
pline("You hear the howling of the CwnAnnwn...");
}
if(u.uhp < u.uhpmax) {
if(u.ulevel > 9) {
if(Regeneration || !(moves%3)) {
flags.botl = 1;
u.uhp += rnd((int) u.ulevel-9);
if(u.uhp > u.uhpmax)
u.uhp = u.uhpmax;
}
} else if(Regeneration ||
(!(moves%(22-u.ulevel*2)))) {
flags.botl = 1;
u.uhp++;
}
}
if(Teleportation && !rn2(85)) tele();
if(Searching && multi >= 0) (void) dosearch();
gethungry();
invault();
amulet();
}
if(multi < 0) {
if(!++multi){
pline("%s", nomovemsg ? nomovemsg :
"You can move again.");
nomovemsg = 0;
if(afternmv) (*afternmv)();
afternmv = 0;
}
}
find_ac();
#ifndef QUEST
if(!flags.mv || Blind)
#endif
{
seeobjs();
seemons();
nscr();
}
if(flags.botl || flags.botlx) bot();
flags.move = 1;
if(multi >= 0 && occupation) {
if(monster_nearby())
stop_occupation();
else if ((*occupation)() == 0)
occupation = 0;
continue;
}
if(multi > 0) {
#ifdef QUEST
if(flags.run >= 4) finddir();
#endif
lookaround();
if(!multi) { /* lookaround may clear multi */
flags.move = 0;
continue;
}
if(flags.mv) {
if(multi < COLNO && !--multi)
flags.mv = flags.run = 0;
domove();
} else {
--multi;
rhack(save_cm);
}
} else if(multi == 0) {
#ifdef MAIL
ckmailstatus();
#endif
rhack(NULL);
}
if(multi && multi%7 == 0)
(void) fflush(stdout);
}
}
