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#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#if defined(I_UNISTD) && defined(HAS_GETHOSTNAME)
# include <unistd.h>
#endif
/* a reasonable default */
#ifndef MAXHOSTNAMELEN
# define MAXHOSTNAMELEN 256
#endif
/* swiped from POSIX.xs */
#if defined(__VMS) && !defined(__POSIX_SOURCE)
# if ((__VMS_VER >= 70000000) && (__DECC_VER >= 50200000)) || (__CRTL_VER >= 70000000)
# include <utsname.h>
# endif
#endif
#ifdef I_SYSUTSNAME
# include <sys/utsname.h>
#endif
MODULE = Sys::Hostname PACKAGE = Sys::Hostname
void
ghname()
PREINIT:
IV retval = -1;
SV *sv;
PPCODE:
EXTEND(SP, 1);
#ifdef HAS_GETHOSTNAME
{
char tmps[MAXHOSTNAMELEN];
retval = PerlSock_gethostname(tmps, sizeof(tmps));
sv = newSVpvn(tmps, strlen(tmps));
}
#else
# ifdef HAS_PHOSTNAME
{
PerlIO *io;
char tmps[MAXHOSTNAMELEN];
char *p = tmps;
char c;
io = PerlProc_popen(PHOSTNAME, "r");
if (!io)
goto check_out;
while (PerlIO_read(io, &c, sizeof(c)) == 1) {
if (isSPACE(c) || p - tmps >= sizeof(tmps))
break;
*p++ = c;
}
PerlProc_pclose(io);
*p = '\0';
retval = 0;
sv = newSVpvn(tmps, strlen(tmps));
}
# else
# ifdef HAS_UNAME
{
struct utsname u;
if (PerlEnv_uname(&u) == -1)
goto check_out;
sv = newSVpvn(u.nodename, strlen(u.nodename));
retval = 0;
}
# endif
# endif
#endif
#ifndef HAS_GETHOSTNAME
check_out:
#endif
if (retval == -1)
XSRETURN_UNDEF;
else
PUSHs(sv_2mortal(sv));
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