#include <sys/types.h>
#include <sys/stat.h>
#include <signal.h>
#include "config.h"
#include "screen.h"
#include "extern.h"
#ifdef SVR4
# include <sys/resource.h>
#endif
extern struct layer *flayer;
extern int eff_uid, real_uid;
extern int eff_gid, real_gid;
extern struct mline mline_old;
extern struct mchar mchar_blank;
extern unsigned char *null, *blank;
#ifdef HAVE_FDWALK
static int close_func __P((void *, int));
#endif
char *
SaveStr(str)
register const char *str;
{
register char *cp;
if ((cp = malloc(strlen(str) + 1)) == NULL)
Panic(0, strnomem);
else
strcpy(cp, str);
return cp;
}
char *
SaveStrn(str, n)
register const char *str;
int n;
{
register char *cp;
if ((cp = malloc(n + 1)) == NULL)
Panic(0, strnomem);
else
{
bcopy((char *)str, cp, n);
cp[n] = 0;
}
return cp;
}
char *
InStr(str, pat)
char *str;
const char *pat;
{
int npat = strlen(pat);
for (;*str; str++)
if (!strncmp(str, pat, npat))
return str;
return 0;
}
#ifndef HAVE_STRERROR
char *
strerror(err)
int err;
{
extern int sys_nerr;
extern char *sys_errlist[];
static char er[20];
if (err > 0 && err < sys_nerr)
return sys_errlist[err];
sprintf(er, "Error %d", err);
return er;
}
#endif
void
centerline(str, y)
char *str;
int y;
{
int l, n;
ASSERT(flayer);
n = strlen(str);
if (n > flayer->l_width - 1)
n = flayer->l_width - 1;
l = (flayer->l_width - 1 - n) / 2;
LPutStr(flayer, str, n, &mchar_blank, l, y);
}
void
leftline(str, y)
char *str;
int y;
{
int l, n;
struct mchar mchar_dol;
mchar_dol = mchar_blank;
mchar_dol.image = '$';
ASSERT(flayer);
l = n = strlen(str);
if (n > flayer->l_width - 1)
n = flayer->l_width - 1;
LPutStr(flayer, str, n, &mchar_blank, 0, y);
if (n != l)
LPutChar(flayer, &mchar_dol, n, y);
}
char *
Filename(s)
char *s;
{
register char *p = s;
if (p)
while (*p)
if (*p++ == '/')
s = p;
return s;
}
char *
stripdev(nam)
char *nam;
{
#ifdef apollo
char *p;
if (nam == NULL)
return NULL;
# ifdef SVR4
if (!strncmp(nam, "/dev/pts", 8) && nam[8] >= '0' && nam[8] <= '9')
{
static char b[13];
sprintf(b, "pts/%d", atoi(nam + 8));
return b;
}
# endif
if (p = strstr(nam,"/dev/"))
return p + 5;
#else
if (nam == NULL)
return NULL;
if (strncmp(nam, "/dev/", 5) == 0)
return nam + 5;
#endif
return nam;
}
#ifdef POSIX
sigret_t (*xsignal(sig, func))
# ifndef __APPLE__
__P(SIGPROTOARG)
# else
()
# endif
int sig;
sigret_t (*func) __P(SIGPROTOARG);
{
struct sigaction osa, sa;
sa.sa_handler = func;
(void)sigemptyset(&sa.sa_mask);
#ifdef SA_RESTART
sa.sa_flags = (sig == SIGCHLD ? SA_RESTART : 0);
#else
sa.sa_flags = 0;
#endif
if (sigaction(sig, &sa, &osa))
return (sigret_t (*)__P(SIGPROTOARG))-1;
return osa.sa_handler;
}
#else
# ifdef hpux
void (*xsignal(sig, func)) __P(SIGPROTOARG)
int sig;
void (*func) __P(SIGPROTOARG);
{
struct sigvec osv, sv;
sv.sv_handler = func;
sv.sv_mask = sigmask(sig);
sv.sv_flags = SV_BSDSIG;
if (sigvector(sig, &sv, &osv) < 0)
return (void (*)__P(SIGPROTOARG))(BADSIG);
return osv.sv_handler;
}
# endif
#endif
#ifdef HAVE_SETEUID
void
xseteuid(euid)
int euid;
{
if (seteuid(euid) == 0)
return;
seteuid(0);
if (seteuid(euid))
Panic(errno, "seteuid");
}
void
xsetegid(egid)
int egid;
{
if (setegid(egid))
Panic(errno, "setegid");
}
#else
# ifdef HAVE_SETREUID
void
xseteuid(euid)
int euid;
{
int oeuid;
oeuid = geteuid();
if (oeuid == euid)
return;
if ((int)getuid() != euid)
oeuid = getuid();
if (setreuid(oeuid, euid))
Panic(errno, "setreuid");
}
void
xsetegid(egid)
int egid;
{
int oegid;
oegid = getegid();
if (oegid == egid)
return;
if ((int)getgid() != egid)
oegid = getgid();
if (setregid(oegid, egid))
Panic(errno, "setregid");
}
# endif
#endif
#ifdef NEED_OWN_BCOPY
void
xbcopy(s1, s2, len)
register char *s1, *s2;
register int len;
{
if (s1 < s2 && s2 < s1 + len)
{
s1 += len;
s2 += len;
while (len-- > 0)
*--s2 = *--s1;
}
else
while (len-- > 0)
*s2++ = *s1++;
}
#endif
void
bclear(p, n)
char *p;
int n;
{
bcopy((char *)blank, p, n);
}
void
Kill(pid, sig)
int pid, sig;
{
if (pid < 2)
return;
(void) kill(pid, sig);
}
#ifdef HAVE_FDWALK
static int
close_func(cb_data, fd)
void *cb_data;
int fd;
{
int except = *(int *)cb_data;
if (fd > 2 && fd != except)
(void)close(fd);
return (0);
}
void
closeallfiles(except)
int except;
{
(void)fdwalk(close_func, &except);
}
#else
void
closeallfiles(except)
int except;
{
int f;
#ifdef SVR4
struct rlimit rl;
if ((getrlimit(RLIMIT_NOFILE, &rl) == 0) && rl.rlim_max != RLIM_INFINITY)
f = rl.rlim_max;
else
#endif
#if defined(SYSV) && defined(NOFILE) && !defined(ISC)
f = NOFILE;
#else
f = getdtablesize();
#endif
while (--f > 2)
if (f != except)
close(f);
}
#endif
#ifndef USE_SETEUID
static int UserPID;
static sigret_t (*Usersigcld)__P(SIGPROTOARG);
#endif
static int UserSTAT;
int
UserContext()
{
#ifndef USE_SETEUID
if (eff_uid == real_uid && eff_gid == real_gid)
return 1;
Usersigcld = signal(SIGCHLD, SIG_DFL);
debug("UserContext: forking.\n");
switch (UserPID = fork())
{
case -1:
Msg(errno, "fork");
return -1;
case 0:
signal(SIGHUP, SIG_DFL);
signal(SIGINT, SIG_IGN);
signal(SIGQUIT, SIG_DFL);
signal(SIGTERM, SIG_DFL);
# ifdef BSDJOBS
signal(SIGTTIN, SIG_DFL);
signal(SIGTTOU, SIG_DFL);
# endif
setuid(real_uid);
setgid(real_gid);
return 1;
default:
return 0;
}
#else
xseteuid(real_uid);
xsetegid(real_gid);
return 1;
#endif
}
void
UserReturn(val)
int val;
{
#ifndef USE_SETEUID
if (eff_uid == real_uid && eff_gid == real_gid)
UserSTAT = val;
else
_exit(val);
#else
xseteuid(eff_uid);
xsetegid(eff_gid);
UserSTAT = val;
#endif
}
int
UserStatus()
{
#ifndef USE_SETEUID
int i;
# ifdef BSDWAIT
union wait wstat;
# else
int wstat;
# endif
if (eff_uid == real_uid && eff_gid == real_gid)
return UserSTAT;
if (UserPID < 0)
return -1;
while ((errno = 0, i = wait(&wstat)) != UserPID)
if (i < 0 && errno != EINTR)
break;
(void) signal(SIGCHLD, Usersigcld);
if (i == -1)
return -1;
return WEXITSTATUS(wstat);
#else
return UserSTAT;
#endif
}
#ifndef HAVE_RENAME
int
rename (old, new)
char *old;
char *new;
{
if (link(old, new) < 0)
return -1;
return unlink(old);
}
#endif
int
AddXChar(buf, ch)
char *buf;
int ch;
{
char *p = buf;
if (ch < ' ' || ch == 0x7f)
{
*p++ = '^';
*p++ = ch ^ 0x40;
}
else if (ch >= 0x80)
{
*p++ = '\\';
*p++ = (ch >> 6 & 7) + '0';
*p++ = (ch >> 3 & 7) + '0';
*p++ = (ch >> 0 & 7) + '0';
}
else
*p++ = ch;
return p - buf;
}
int
AddXChars(buf, len, str)
char *buf, *str;
int len;
{
char *p;
if (str == 0)
{
*buf = 0;
return 0;
}
len -= 4;
for (p = buf; p < buf + len && *str; str++)
{
if (*str == ' ')
*p++ = *str;
else
p += AddXChar(p, *str);
}
*p = 0;
return p - buf;
}
#ifdef DEBUG
void
opendebug(new, shout)
int new, shout;
{
char buf[256];
#ifdef _MODE_T
mode_t oumask = umask(0);
#else
int oumask = umask(0);
#endif
ASSERT(!dfp);
(void) mkdir(DEBUGDIR, 0777);
sprintf(buf, shout ? "%s/SCREEN.%d" : "%s/screen.%d", DEBUGDIR, getpid());
if (!(dfp = fopen(buf, new ? "w" : "a")))
dfp = stderr;
else
(void)chmod(buf, 0666);
(void)umask(oumask);
debug("opendebug: done.\n");
}
#endif
void
sleep1000(msec)
int msec;
{
struct timeval t;
t.tv_sec = (long) (msec / 1000);
t.tv_usec = (long) ((msec % 1000) * 1000);
select(0, (fd_set *)0, (fd_set *)0, (fd_set *)0, &t);
}
void
xsetenv(var, value)
char *var;
char *value;
{
#ifndef USESETENV
char *buf;
int l;
if ((buf = (char *)malloc((l = strlen(var)) +
strlen(value) + 2)) == NULL)
{
Msg(0, strnomem);
return;
}
strcpy(buf, var);
buf[l] = '=';
strcpy(buf + l + 1, value);
putenv(buf);
# ifdef NEEDPUTENV
free(buf);
# else
# endif
#else
# if defined(linux) || defined(__convex__) || (BSD >= 199103)
setenv(var, value, 1);
# else
setenv(var, value);
# endif
#endif
}
#ifdef TERMINFO
int
_delay(delay, outc)
register int delay;
int (*outc) __P((int));
{
int pad;
extern short ospeed;
static short osp2pad[] = {
0,2000,1333,909,743,666,500,333,166,83,55,41,20,10,5,2,1,1
};
if (ospeed <= 0 || ospeed >= (int)(sizeof(osp2pad)/sizeof(*osp2pad)))
return 0;
pad =osp2pad[ospeed];
delay = (delay + pad / 2) / pad;
while (delay-- > 0)
(*outc)(0);
return 0;
}
# ifdef linux
int (*save_outc) __P((int));
# undef tputs
void
xtputs(str, affcnt, outc)
char *str;
int affcnt;
int (*outc) __P((int));
{
extern int tputs __P((const char *, int, int (*)(int)));
save_outc = outc;
tputs(str, affcnt, outc);
}
int
_nc_timed_wait(mode, ms, tlp)
int mode, ms, *tlp;
{
_delay(ms * 10, save_outc);
return 0;
}
# endif
#endif
#ifndef USEVARARGS
# define xva_arg(s, t, tn) (*(t *)(s += xsnoff(tn, 0, 0), s - xsnoff(tn, 0, 0)))
# define xva_list char *
static int
xsnoff(a, b, c)
int a;
char *b;
int c;
{
return a ? (char *)&c - (char *)&b : (char *)&b - (char *)&a;
}
int
xsnprintf(s, n, fmt, p1, p2, p3, p4, p5, p6)
char *s;
int n;
char *fmt;
unsigned long p1, p2, p3, p4, p5, p6;
{
int xvsnprintf __P((char *, int, char *, xva_list));
return xvsnprintf(s, n, fmt, (char *)&fmt + xsnoff(1, 0, 0));
}
#else
# define xva_arg(s, t, tn) va_arg(s, t)
# define xva_list va_list
#endif
#if !defined(USEVARARGS) || !defined(HAVE_VSNPRINTF)
int
xvsnprintf(s, n, fmt, stack)
char *s;
int n;
char *fmt;
xva_list stack;
{
char *f, *sf = 0;
int i, on, argl = 0;
char myf[10], buf[20];
char *arg, *myfp;
on = n;
f = fmt;
arg = 0;
while(arg || (sf = index(f, '%')) || (sf = f + strlen(f)))
{
if (arg == 0)
{
arg = f;
argl = sf - f;
}
if (argl)
{
i = argl > n - 1 ? n - 1 : argl;
strncpy(s, arg, i);
s += i;
n -= i;
if (i < argl)
{
*s = 0;
return on;
}
}
arg = 0;
if (sf == 0)
continue;
f = sf;
sf = 0;
if (!*f)
break;
myfp = myf;
*myfp++ = *f++;
while (((*f >= '0' && *f <='9') || *f == '#') && myfp - myf < 8)
*myfp++ = *f++;
*myfp++ = *f;
*myfp = 0;
if (!*f++)
break;
switch(f[-1])
{
case '%':
arg = "%";
break;
case 'c':
case 'o':
case 'd':
case 'x':
i = xva_arg(stack, int, 0);
sprintf(buf, myf, i);
arg = buf;
break;
case 's':
arg = xva_arg(stack, char *, 1);
if (arg == 0)
arg = "NULL";
break;
default:
arg = "";
break;
}
argl = strlen(arg);
}
*s = 0;
return on - n;
}
#endif