/* pp_sys.c
*
* Copyright (C) 1995, 1996, 1997, 1998, 1999,
* 2000, 2001, 2002, 2003, 2004, 2005, 2006, by Larry Wall and others
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
*
*/
/*
* But only a short way ahead its floor and the walls on either side were
* cloven by a great fissure, out of which the red glare came, now leaping
* up, now dying down into darkness; and all the while far below there was
* a rumour and a trouble as of great engines throbbing and labouring.
*/
/* This file contains system pp ("push/pop") functions that
* execute the opcodes that make up a perl program. A typical pp function
* expects to find its arguments on the stack, and usually pushes its
* results onto the stack, hence the 'pp' terminology. Each OP structure
* contains a pointer to the relevant pp_foo() function.
*
* By 'system', we mean ops which interact with the OS, such as pp_open().
*/
#include "EXTERN.h"
#define PERL_IN_PP_SYS_C
#include "perl.h"
#ifdef I_SHADOW
/* Shadow password support for solaris - pdo@cs.umd.edu
* Not just Solaris: at least HP-UX, IRIX, Linux.
* The API is from SysV.
*
* There are at least two more shadow interfaces,
* see the comments in pp_gpwent().
*
* --jhi */
# ifdef __hpux__
/* There is a MAXINT coming from <shadow.h> <- <hpsecurity.h> <- <values.h>
* and another MAXINT from "perl.h" <- <sys/param.h>. */
# undef MAXINT
# endif
# include <shadow.h>
#endif
#ifdef I_SYS_WAIT
# include <sys/wait.h>
#endif
#ifdef I_SYS_RESOURCE
# include <sys/resource.h>
#endif
#ifdef NETWARE
NETDB_DEFINE_CONTEXT
#endif
#ifdef HAS_SELECT
# ifdef I_SYS_SELECT
# include <sys/select.h>
# endif
#endif
/* XXX Configure test needed.
h_errno might not be a simple 'int', especially for multi-threaded
applications, see "extern int errno in perl.h". Creating such
a test requires taking into account the differences between
compiling multithreaded and singlethreaded ($ccflags et al).
HOST_NOT_FOUND is typically defined in <netdb.h>.
*/
#if defined(HOST_NOT_FOUND) && !defined(h_errno) && !defined(__CYGWIN__)
extern int h_errno;
#endif
#ifdef HAS_PASSWD
# ifdef I_PWD
# include <pwd.h>
# else
# if !defined(VMS)
struct passwd *getpwnam (char *);
struct passwd *getpwuid (Uid_t);
# endif
# endif
# ifdef HAS_GETPWENT
#ifndef getpwent
struct passwd *getpwent (void);
#elif defined (VMS) && defined (my_getpwent)
struct passwd *Perl_my_getpwent (pTHX);
#endif
# endif
#endif
#ifdef HAS_GROUP
# ifdef I_GRP
# include <grp.h>
# else
struct group *getgrnam (char *);
struct group *getgrgid (Gid_t);
# endif
# ifdef HAS_GETGRENT
#ifndef getgrent
struct group *getgrent (void);
#endif
# endif
#endif
#ifdef I_UTIME
# if defined(_MSC_VER) || defined(__MINGW32__)
# include <sys/utime.h>
# else
# include <utime.h>
# endif
#endif
#ifdef HAS_CHSIZE
# ifdef my_chsize /* Probably #defined to Perl_my_chsize in embed.h */
# undef my_chsize
# endif
# define my_chsize PerlLIO_chsize
#else
# ifdef HAS_TRUNCATE
# define my_chsize PerlLIO_chsize
# else
I32 my_chsize(int fd, Off_t length);
# endif
#endif
#ifdef HAS_FLOCK
# define FLOCK flock
#else /* no flock() */
/* fcntl.h might not have been included, even if it exists, because
the current Configure only sets I_FCNTL if it's needed to pick up
the *_OK constants. Make sure it has been included before testing
the fcntl() locking constants. */
# if defined(HAS_FCNTL) && !defined(I_FCNTL)
# include <fcntl.h>
# endif
# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
# define FLOCK fcntl_emulate_flock
# define FCNTL_EMULATE_FLOCK
# else /* no flock() or fcntl(F_SETLK,...) */
# ifdef HAS_LOCKF
# define FLOCK lockf_emulate_flock
# define LOCKF_EMULATE_FLOCK
# endif /* lockf */
# endif /* no flock() or fcntl(F_SETLK,...) */
# ifdef FLOCK
static int FLOCK (int, int);
/*
* These are the flock() constants. Since this sytems doesn't have
* flock(), the values of the constants are probably not available.
*/
# ifndef LOCK_SH
# define LOCK_SH 1
# endif
# ifndef LOCK_EX
# define LOCK_EX 2
# endif
# ifndef LOCK_NB
# define LOCK_NB 4
# endif
# ifndef LOCK_UN
# define LOCK_UN 8
# endif
# endif /* emulating flock() */
#endif /* no flock() */
#define ZBTLEN 10
static const char zero_but_true[ZBTLEN + 1] = "0 but true";
#if defined(I_SYS_ACCESS) && !defined(R_OK)
# include <sys/access.h>
#endif
#if defined(HAS_FCNTL) && defined(F_SETFD) && !defined(FD_CLOEXEC)
# define FD_CLOEXEC 1 /* NeXT needs this */
#endif
#include "reentr.h"
#ifdef __Lynx__
/* Missing protos on LynxOS */
void sethostent(int);
void endhostent(void);
void setnetent(int);
void endnetent(void);
void setprotoent(int);
void endprotoent(void);
void setservent(int);
void endservent(void);
#endif
#undef PERL_EFF_ACCESS /* EFFective uid/gid ACCESS */
/* AIX 5.2 and below use mktime for localtime, and defines the edge case
* for time 0x7fffffff to be valid only in UTC. AIX 5.3 provides localtime64
* available in the 32bit environment, which could warrant Configure
* checks in the future.
*/
#ifdef _AIX
#define LOCALTIME_EDGECASE_BROKEN
#endif
/* F_OK unused: if stat() cannot find it... */
#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) && defined(EFF_ONLY_OK) && !defined(NO_EFF_ONLY_OK)
/* Digital UNIX (when the EFF_ONLY_OK gets fixed), UnixWare */
# define PERL_EFF_ACCESS(p,f) (access((p), (f) | EFF_ONLY_OK))
#endif
#if !defined(PERL_EFF_ACCESS) && defined(HAS_EACCESS)
# ifdef I_SYS_SECURITY
# include <sys/security.h>
# endif
# ifdef ACC_SELF
/* HP SecureWare */
# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f), ACC_SELF))
# else
/* SCO */
# define PERL_EFF_ACCESS(p,f) (eaccess((p), (f)))
# endif
#endif
#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESSX) && defined(ACC_SELF)
/* AIX */
# define PERL_EFF_ACCESS(p,f) (accessx((p), (f), ACC_SELF))
#endif
#if !defined(PERL_EFF_ACCESS) && defined(HAS_ACCESS) \
&& (defined(HAS_SETREUID) || defined(HAS_SETRESUID) \
|| defined(HAS_SETREGID) || defined(HAS_SETRESGID))
/* The Hard Way. */
STATIC int
S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
{
const Uid_t ruid = getuid();
const Uid_t euid = geteuid();
const Gid_t rgid = getgid();
const Gid_t egid = getegid();
int res;
LOCK_CRED_MUTEX;
#if !defined(HAS_SETREUID) && !defined(HAS_SETRESUID)
Perl_croak(aTHX_ "switching effective uid is not implemented");
#else
#ifdef HAS_SETREUID
if (setreuid(euid, ruid))
#else
#ifdef HAS_SETRESUID
if (setresuid(euid, ruid, (Uid_t)-1))
#endif
#endif
Perl_croak(aTHX_ "entering effective uid failed");
#endif
#if !defined(HAS_SETREGID) && !defined(HAS_SETRESGID)
Perl_croak(aTHX_ "switching effective gid is not implemented");
#else
#ifdef HAS_SETREGID
if (setregid(egid, rgid))
#else
#ifdef HAS_SETRESGID
if (setresgid(egid, rgid, (Gid_t)-1))
#endif
#endif
Perl_croak(aTHX_ "entering effective gid failed");
#endif
res = access(path, mode);
#ifdef HAS_SETREUID
if (setreuid(ruid, euid))
#else
#ifdef HAS_SETRESUID
if (setresuid(ruid, euid, (Uid_t)-1))
#endif
#endif
Perl_croak(aTHX_ "leaving effective uid failed");
#ifdef HAS_SETREGID
if (setregid(rgid, egid))
#else
#ifdef HAS_SETRESGID
if (setresgid(rgid, egid, (Gid_t)-1))
#endif
#endif
Perl_croak(aTHX_ "leaving effective gid failed");
UNLOCK_CRED_MUTEX;
return res;
}
# define PERL_EFF_ACCESS(p,f) (emulate_eaccess((p), (f)))
#endif
#if !defined(PERL_EFF_ACCESS)
/* With it or without it: anyway you get a warning: either that
it is unused, or it is declared static and never defined.
*/
STATIC int
S_emulate_eaccess(pTHX_ const char* path, Mode_t mode)
{
(void)path;
(void)mode;
Perl_croak(aTHX_ "switching effective uid is not implemented");
/*NOTREACHED*/
return -1;
}
#endif
PP(pp_backtick)
{
dVAR; dSP; dTARGET;
PerlIO *fp;
const char * const tmps = POPpconstx;
const I32 gimme = GIMME_V;
const char *mode = "r";
TAINT_PROPER("``");
if (PL_op->op_private & OPpOPEN_IN_RAW)
mode = "rb";
else if (PL_op->op_private & OPpOPEN_IN_CRLF)
mode = "rt";
fp = PerlProc_popen(tmps, mode);
if (fp) {
const char * const type = PL_curcop->cop_io ? SvPV_nolen_const(PL_curcop->cop_io) : NULL;
if (type && *type)
PerlIO_apply_layers(aTHX_ fp,mode,type);
if (gimme == G_VOID) {
char tmpbuf[256];
while (PerlIO_read(fp, tmpbuf, sizeof tmpbuf) > 0)
;
}
else if (gimme == G_SCALAR) {
ENTER;
SAVESPTR(PL_rs);
PL_rs = &PL_sv_undef;
sv_setpvn(TARG, "", 0); /* note that this preserves previous buffer */
while (sv_gets(TARG, fp, SvCUR(TARG)) != Nullch)
;
LEAVE;
XPUSHs(TARG);
SvTAINTED_on(TARG);
}
else {
for (;;) {
SV * const sv = newSV(79);
if (sv_gets(sv, fp, 0) == Nullch) {
SvREFCNT_dec(sv);
break;
}
XPUSHs(sv_2mortal(sv));
if (SvLEN(sv) - SvCUR(sv) > 20) {
SvPV_shrink_to_cur(sv);
}
SvTAINTED_on(sv);
}
}
STATUS_NATIVE_CHILD_SET(PerlProc_pclose(fp));
TAINT; /* "I believe that this is not gratuitous!" */
}
else {
STATUS_NATIVE_CHILD_SET(-1);
if (gimme == G_SCALAR)
RETPUSHUNDEF;
}
RETURN;
}
PP(pp_glob)
{
dVAR;
OP *result;
tryAMAGICunTARGET(iter, -1);
/* Note that we only ever get here if File::Glob fails to load
* without at the same time croaking, for some reason, or if
* perl was built with PERL_EXTERNAL_GLOB */
ENTER;
#ifndef VMS
if (PL_tainting) {
/*
* The external globbing program may use things we can't control,
* so for security reasons we must assume the worst.
*/
TAINT;
taint_proper(PL_no_security, "glob");
}
#endif /* !VMS */
SAVESPTR(PL_last_in_gv); /* We don't want this to be permanent. */
PL_last_in_gv = (GV*)*PL_stack_sp--;
SAVESPTR(PL_rs); /* This is not permanent, either. */
PL_rs = sv_2mortal(newSVpvs("\000"));
#ifndef DOSISH
#ifndef CSH
*SvPVX(PL_rs) = '\n';
#endif /* !CSH */
#endif /* !DOSISH */
result = do_readline();
LEAVE;
return result;
}
PP(pp_rcatline)
{
dVAR;
PL_last_in_gv = cGVOP_gv;
return do_readline();
}
PP(pp_warn)
{
dVAR; dSP; dMARK;
SV *tmpsv;
const char *tmps;
STRLEN len;
if (SP - MARK > 1) {
dTARGET;
do_join(TARG, &PL_sv_no, MARK, SP);
tmpsv = TARG;
SP = MARK + 1;
}
else if (SP == MARK) {
tmpsv = &PL_sv_no;
EXTEND(SP, 1);
}
else {
tmpsv = TOPs;
}
tmps = SvPV_const(tmpsv, len);
if ((!tmps || !len) && PL_errgv) {
SV * const error = ERRSV;
SvUPGRADE(error, SVt_PV);
if (SvPOK(error) && SvCUR(error))
sv_catpvs(error, "\t...caught");
tmpsv = error;
tmps = SvPV_const(tmpsv, len);
}
if (!tmps || !len)
tmpsv = sv_2mortal(newSVpvs("Warning: something's wrong"));
Perl_warn(aTHX_ "%"SVf, tmpsv);
RETSETYES;
}
PP(pp_die)
{
dVAR; dSP; dMARK;
const char *tmps;
SV *tmpsv;
STRLEN len;
bool multiarg = 0;
#ifdef VMS
VMSISH_HUSHED = VMSISH_HUSHED || (PL_op->op_private & OPpHUSH_VMSISH);
#endif
if (SP - MARK != 1) {
dTARGET;
do_join(TARG, &PL_sv_no, MARK, SP);
tmpsv = TARG;
tmps = SvPV_const(tmpsv, len);
multiarg = 1;
SP = MARK + 1;
}
else {
tmpsv = TOPs;
tmps = SvROK(tmpsv) ? Nullch : SvPV_const(tmpsv, len);
}
if (!tmps || !len) {
SV * const error = ERRSV;
SvUPGRADE(error, SVt_PV);
if (multiarg ? SvROK(error) : SvROK(tmpsv)) {
if (!multiarg)
SvSetSV(error,tmpsv);
else if (sv_isobject(error)) {
HV * const stash = SvSTASH(SvRV(error));
GV * const gv = gv_fetchmethod(stash, "PROPAGATE");
if (gv) {
SV * const file = sv_2mortal(newSVpv(CopFILE(PL_curcop),0));
SV * const line = sv_2mortal(newSVuv(CopLINE(PL_curcop)));
EXTEND(SP, 3);
PUSHMARK(SP);
PUSHs(error);
PUSHs(file);
PUSHs(line);
PUTBACK;
call_sv((SV*)GvCV(gv),
G_SCALAR|G_EVAL|G_KEEPERR);
sv_setsv(error,*PL_stack_sp--);
}
}
DIE(aTHX_ Nullch);
}
else {
if (SvPOK(error) && SvCUR(error))
sv_catpvs(error, "\t...propagated");
tmpsv = error;
if (SvOK(tmpsv))
tmps = SvPV_const(tmpsv, len);
else
tmps = Nullch;
}
}
if (!tmps || !len)
tmpsv = sv_2mortal(newSVpvs("Died"));
DIE(aTHX_ "%"SVf, tmpsv);
}
/* I/O. */
PP(pp_open)
{
dVAR; dSP;
dMARK; dORIGMARK;
dTARGET;
SV *sv;
IO *io;
const char *tmps;
STRLEN len;
bool ok;
GV * const gv = (GV *)*++MARK;
if (!isGV(gv))
DIE(aTHX_ PL_no_usym, "filehandle");
if ((io = GvIOp(gv)))
IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
if (io) {
MAGIC * const mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
if (mg) {
/* Method's args are same as ours ... */
/* ... except handle is replaced by the object */
*MARK-- = SvTIED_obj((SV*)io, mg);
PUSHMARK(MARK);
PUTBACK;
ENTER;
call_method("OPEN", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
}
if (MARK < SP) {
sv = *++MARK;
}
else {
sv = GvSVn(gv);
}
tmps = SvPV_const(sv, len);
ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, Nullfp, MARK+1, (SP-MARK));
SP = ORIGMARK;
if (ok)
PUSHi( (I32)PL_forkprocess );
else if (PL_forkprocess == 0) /* we are a new child */
PUSHi(0);
else
RETPUSHUNDEF;
RETURN;
}
PP(pp_close)
{
dVAR; dSP;
IO *io;
MAGIC *mg;
GV * const gv = (MAXARG == 0) ? PL_defoutgv : (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
PUTBACK;
ENTER;
call_method("CLOSE", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
EXTEND(SP, 1);
PUSHs(boolSV(do_close(gv, TRUE)));
RETURN;
}
PP(pp_pipe_op)
{
#ifdef HAS_PIPE
dVAR;
dSP;
register IO *rstio;
register IO *wstio;
int fd[2];
GV * const wgv = (GV*)POPs;
GV * const rgv = (GV*)POPs;
if (!rgv || !wgv)
goto badexit;
if (SvTYPE(rgv) != SVt_PVGV || SvTYPE(wgv) != SVt_PVGV)
DIE(aTHX_ PL_no_usym, "filehandle");
rstio = GvIOn(rgv);
wstio = GvIOn(wgv);
if (IoIFP(rstio))
do_close(rgv, FALSE);
if (IoIFP(wstio))
do_close(wgv, FALSE);
if (PerlProc_pipe(fd) < 0)
goto badexit;
IoIFP(rstio) = PerlIO_fdopen(fd[0], "r"PIPE_OPEN_MODE);
IoOFP(wstio) = PerlIO_fdopen(fd[1], "w"PIPE_OPEN_MODE);
IoOFP(rstio) = IoIFP(rstio);
IoIFP(wstio) = IoOFP(wstio);
IoTYPE(rstio) = IoTYPE_RDONLY;
IoTYPE(wstio) = IoTYPE_WRONLY;
if (!IoIFP(rstio) || !IoOFP(wstio)) {
if (IoIFP(rstio)) PerlIO_close(IoIFP(rstio));
else PerlLIO_close(fd[0]);
if (IoOFP(wstio)) PerlIO_close(IoOFP(wstio));
else PerlLIO_close(fd[1]);
goto badexit;
}
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
#endif
RETPUSHYES;
badexit:
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_func, "pipe");
#endif
}
PP(pp_fileno)
{
dVAR; dSP; dTARGET;
GV *gv;
IO *io;
PerlIO *fp;
MAGIC *mg;
if (MAXARG < 1)
RETPUSHUNDEF;
gv = (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
PUTBACK;
ENTER;
call_method("FILENO", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io))) {
/* Can't do this because people seem to do things like
defined(fileno($foo)) to check whether $foo is a valid fh.
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
*/
RETPUSHUNDEF;
}
PUSHi(PerlIO_fileno(fp));
RETURN;
}
PP(pp_umask)
{
dVAR;
dSP;
#ifdef HAS_UMASK
dTARGET;
Mode_t anum;
if (MAXARG < 1) {
anum = PerlLIO_umask(0);
(void)PerlLIO_umask(anum);
}
else
anum = PerlLIO_umask(POPi);
TAINT_PROPER("umask");
XPUSHi(anum);
#else
/* Only DIE if trying to restrict permissions on "user" (self).
* Otherwise it's harmless and more useful to just return undef
* since 'group' and 'other' concepts probably don't exist here. */
if (MAXARG >= 1 && (POPi & 0700))
DIE(aTHX_ "umask not implemented");
XPUSHs(&PL_sv_undef);
#endif
RETURN;
}
PP(pp_binmode)
{
dVAR; dSP;
GV *gv;
IO *io;
PerlIO *fp;
MAGIC *mg;
SV *discp = Nullsv;
if (MAXARG < 1)
RETPUSHUNDEF;
if (MAXARG > 1) {
discp = POPs;
}
gv = (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
if (discp)
XPUSHs(discp);
PUTBACK;
ENTER;
call_method("BINMODE", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
EXTEND(SP, 1);
if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
PUTBACK;
if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
(discp) ? SvPV_nolen_const(discp) : Nullch)) {
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
if (!PerlIO_binmode(aTHX_ IoOFP(io),IoTYPE(io),
mode_from_discipline(discp),
(discp) ? SvPV_nolen_const(discp) : Nullch)) {
SPAGAIN;
RETPUSHUNDEF;
}
}
SPAGAIN;
RETPUSHYES;
}
else {
SPAGAIN;
RETPUSHUNDEF;
}
}
PP(pp_tie)
{
dVAR; dSP; dMARK;
HV* stash;
GV *gv;
SV *sv;
const I32 markoff = MARK - PL_stack_base;
const char *methname;
int how = PERL_MAGIC_tied;
U32 items;
SV *varsv = *++MARK;
switch(SvTYPE(varsv)) {
case SVt_PVHV:
methname = "TIEHASH";
HvEITER_set((HV *)varsv, 0);
break;
case SVt_PVAV:
methname = "TIEARRAY";
break;
case SVt_PVGV:
#ifdef GV_UNIQUE_CHECK
if (GvUNIQUE((GV*)varsv)) {
Perl_croak(aTHX_ "Attempt to tie unique GV");
}
#endif
methname = "TIEHANDLE";
how = PERL_MAGIC_tiedscalar;
/* For tied filehandles, we apply tiedscalar magic to the IO
slot of the GP rather than the GV itself. AMS 20010812 */
if (!GvIOp(varsv))
GvIOp(varsv) = newIO();
varsv = (SV *)GvIOp(varsv);
break;
default:
methname = "TIESCALAR";
how = PERL_MAGIC_tiedscalar;
break;
}
items = SP - MARK++;
if (sv_isobject(*MARK)) {
ENTER;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,(I32)items);
while (items--)
PUSHs(*MARK++);
PUTBACK;
call_method(methname, G_SCALAR);
}
else {
/* Not clear why we don't call call_method here too.
* perhaps to get different error message ?
*/
stash = gv_stashsv(*MARK, FALSE);
if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
methname, *MARK);
}
ENTER;
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,(I32)items);
while (items--)
PUSHs(*MARK++);
PUTBACK;
call_sv((SV*)GvCV(gv), G_SCALAR);
}
SPAGAIN;
sv = TOPs;
POPSTACK;
if (sv_isobject(sv)) {
sv_unmagic(varsv, how);
/* Croak if a self-tie on an aggregate is attempted. */
if (varsv == SvRV(sv) &&
(SvTYPE(varsv) == SVt_PVAV ||
SvTYPE(varsv) == SVt_PVHV))
Perl_croak(aTHX_
"Self-ties of arrays and hashes are not supported");
sv_magic(varsv, (SvRV(sv) == varsv ? Nullsv : sv), how, Nullch, 0);
}
LEAVE;
SP = PL_stack_base + markoff;
PUSHs(sv);
RETURN;
}
PP(pp_untie)
{
dVAR; dSP;
MAGIC *mg;
SV *sv = POPs;
const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
RETPUSHYES;
if ((mg = SvTIED_mg(sv, how))) {
SV * const obj = SvRV(SvTIED_obj(sv, mg));
if (obj) {
GV * const gv = gv_fetchmethod_autoload(SvSTASH(obj), "UNTIE", FALSE);
CV *cv;
if (gv && isGV(gv) && (cv = GvCV(gv))) {
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)gv, mg));
XPUSHs(sv_2mortal(newSViv(SvREFCNT(obj)-1)));
PUTBACK;
ENTER;
call_sv((SV *)cv, G_VOID);
LEAVE;
SPAGAIN;
}
else if (mg && SvREFCNT(obj) > 1 && ckWARN(WARN_UNTIE)) {
Perl_warner(aTHX_ packWARN(WARN_UNTIE),
"untie attempted while %"UVuf" inner references still exist",
(UV)SvREFCNT(obj) - 1 ) ;
}
}
}
sv_unmagic(sv, how) ;
RETPUSHYES;
}
PP(pp_tied)
{
dVAR;
dSP;
const MAGIC *mg;
SV *sv = POPs;
const char how = (SvTYPE(sv) == SVt_PVHV || SvTYPE(sv) == SVt_PVAV)
? PERL_MAGIC_tied : PERL_MAGIC_tiedscalar;
if (SvTYPE(sv) == SVt_PVGV && !(sv = (SV *)GvIOp(sv)))
RETPUSHUNDEF;
if ((mg = SvTIED_mg(sv, how))) {
SV *osv = SvTIED_obj(sv, mg);
if (osv == mg->mg_obj)
osv = sv_mortalcopy(osv);
PUSHs(osv);
RETURN;
}
RETPUSHUNDEF;
}
PP(pp_dbmopen)
{
dVAR; dSP;
dPOPPOPssrl;
HV* stash;
GV *gv;
HV * const hv = (HV*)POPs;
SV * const sv = sv_mortalcopy(&PL_sv_no);
sv_setpv(sv, "AnyDBM_File");
stash = gv_stashsv(sv, FALSE);
if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
PUTBACK;
require_pv("AnyDBM_File.pm");
SPAGAIN;
if (!(gv = gv_fetchmethod(stash, "TIEHASH")))
DIE(aTHX_ "No dbm on this machine");
}
ENTER;
PUSHMARK(SP);
EXTEND(SP, 5);
PUSHs(sv);
PUSHs(left);
if (SvIV(right))
PUSHs(sv_2mortal(newSVuv(O_RDWR|O_CREAT)));
else
PUSHs(sv_2mortal(newSVuv(O_RDWR)));
PUSHs(right);
PUTBACK;
call_sv((SV*)GvCV(gv), G_SCALAR);
SPAGAIN;
if (!sv_isobject(TOPs)) {
SP--;
PUSHMARK(SP);
PUSHs(sv);
PUSHs(left);
PUSHs(sv_2mortal(newSVuv(O_RDONLY)));
PUSHs(right);
PUTBACK;
call_sv((SV*)GvCV(gv), G_SCALAR);
SPAGAIN;
}
if (sv_isobject(TOPs)) {
sv_unmagic((SV *) hv, PERL_MAGIC_tied);
sv_magic((SV*)hv, TOPs, PERL_MAGIC_tied, Nullch, 0);
}
LEAVE;
RETURN;
}
PP(pp_sselect)
{
#ifdef HAS_SELECT
dVAR; dSP; dTARGET;
register I32 i;
register I32 j;
register char *s;
register SV *sv;
NV value;
I32 maxlen = 0;
I32 nfound;
struct timeval timebuf;
struct timeval *tbuf = &timebuf;
I32 growsize;
char *fd_sets[4];
#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
I32 masksize;
I32 offset;
I32 k;
# if BYTEORDER & 0xf0000
# define ORDERBYTE (0x88888888 - BYTEORDER)
# else
# define ORDERBYTE (0x4444 - BYTEORDER)
# endif
#endif
SP -= 4;
for (i = 1; i <= 3; i++) {
SV * const sv = SP[i];
if (!SvOK(sv))
continue;
if (SvREADONLY(sv)) {
if (SvIsCOW(sv))
sv_force_normal_flags(sv, 0);
if (SvREADONLY(sv) && !(SvPOK(sv) && SvCUR(sv) == 0))
DIE(aTHX_ PL_no_modify);
}
if (!SvPOK(sv)) {
if (ckWARN(WARN_MISC))
Perl_warner(aTHX_ packWARN(WARN_MISC), "Non-string passed as bitmask");
SvPV_force_nolen(sv); /* force string conversion */
}
j = SvCUR(sv);
if (maxlen < j)
maxlen = j;
}
/* little endians can use vecs directly */
#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
# ifdef NFDBITS
# ifndef NBBY
# define NBBY 8
# endif
masksize = NFDBITS / NBBY;
# else
masksize = sizeof(long); /* documented int, everyone seems to use long */
# endif
Zero(&fd_sets[0], 4, char*);
#endif
# if SELECT_MIN_BITS == 1
growsize = sizeof(fd_set);
# else
# if defined(__GLIBC__) && defined(__FD_SETSIZE)
# undef SELECT_MIN_BITS
# define SELECT_MIN_BITS __FD_SETSIZE
# endif
/* If SELECT_MIN_BITS is greater than one we most probably will want
* to align the sizes with SELECT_MIN_BITS/8 because for example
* in many little-endian (Intel, Alpha) systems (Linux, OS/2, Digital
* UNIX, Solaris, NeXT, Darwin) the smallest quantum select() operates
* on (sets/tests/clears bits) is 32 bits. */
growsize = maxlen + (SELECT_MIN_BITS/8 - (maxlen % (SELECT_MIN_BITS/8)));
# endif
sv = SP[4];
if (SvOK(sv)) {
value = SvNV(sv);
if (value < 0.0)
value = 0.0;
timebuf.tv_sec = (long)value;
value -= (NV)timebuf.tv_sec;
timebuf.tv_usec = (long)(value * 1000000.0);
}
else
tbuf = Null(struct timeval*);
for (i = 1; i <= 3; i++) {
sv = SP[i];
if (!SvOK(sv) || SvCUR(sv) == 0) {
fd_sets[i] = 0;
continue;
}
assert(SvPOK(sv));
j = SvLEN(sv);
if (j < growsize) {
Sv_Grow(sv, growsize);
}
j = SvCUR(sv);
s = SvPVX(sv) + j;
while (++j <= growsize) {
*s++ = '\0';
}
#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
s = SvPVX(sv);
Newx(fd_sets[i], growsize, char);
for (offset = 0; offset < growsize; offset += masksize) {
for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
fd_sets[i][j+offset] = s[(k % masksize) + offset];
}
#else
fd_sets[i] = SvPVX(sv);
#endif
}
#ifdef PERL_IRIX5_SELECT_TIMEVAL_VOID_CAST
/* Can't make just the (void*) conditional because that would be
* cpp #if within cpp macro, and not all compilers like that. */
nfound = PerlSock_select(
maxlen * 8,
(Select_fd_set_t) fd_sets[1],
(Select_fd_set_t) fd_sets[2],
(Select_fd_set_t) fd_sets[3],
(void*) tbuf); /* Workaround for compiler bug. */
#else
nfound = PerlSock_select(
maxlen * 8,
(Select_fd_set_t) fd_sets[1],
(Select_fd_set_t) fd_sets[2],
(Select_fd_set_t) fd_sets[3],
tbuf);
#endif
for (i = 1; i <= 3; i++) {
if (fd_sets[i]) {
sv = SP[i];
#if BYTEORDER != 0x1234 && BYTEORDER != 0x12345678
s = SvPVX(sv);
for (offset = 0; offset < growsize; offset += masksize) {
for (j = 0, k=ORDERBYTE; j < masksize; j++, (k >>= 4))
s[(k % masksize) + offset] = fd_sets[i][j+offset];
}
Safefree(fd_sets[i]);
#endif
SvSETMAGIC(sv);
}
}
PUSHi(nfound);
if (GIMME == G_ARRAY && tbuf) {
value = (NV)(timebuf.tv_sec) +
(NV)(timebuf.tv_usec) / 1000000.0;
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setnv(sv, value);
}
RETURN;
#else
DIE(aTHX_ "select not implemented");
#endif
}
void
Perl_setdefout(pTHX_ GV *gv)
{
dVAR;
if (gv)
(void)SvREFCNT_inc(gv);
if (PL_defoutgv)
SvREFCNT_dec(PL_defoutgv);
PL_defoutgv = gv;
}
PP(pp_select)
{
dVAR; dSP; dTARGET;
HV *hv;
GV * const newdefout = (PL_op->op_private > 0) ? ((GV *) POPs) : (GV *) NULL;
GV * egv = GvEGV(PL_defoutgv);
if (!egv)
egv = PL_defoutgv;
hv = GvSTASH(egv);
if (! hv)
XPUSHs(&PL_sv_undef);
else {
GV * const * const gvp = (GV**)hv_fetch(hv, GvNAME(egv), GvNAMELEN(egv), FALSE);
if (gvp && *gvp == egv) {
gv_efullname4(TARG, PL_defoutgv, Nullch, TRUE);
XPUSHTARG;
}
else {
XPUSHs(sv_2mortal(newRV((SV*)egv)));
}
}
if (newdefout) {
if (!GvIO(newdefout))
gv_IOadd(newdefout);
setdefout(newdefout);
}
RETURN;
}
PP(pp_getc)
{
dVAR; dSP; dTARGET;
IO *io = NULL;
MAGIC *mg;
GV * const gv = (MAXARG==0) ? PL_stdingv : (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
const I32 gimme = GIMME_V;
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
PUTBACK;
ENTER;
call_method("GETC", gimme);
LEAVE;
SPAGAIN;
if (gimme == G_SCALAR)
SvSetMagicSV_nosteal(TARG, TOPs);
RETURN;
}
if (!gv || do_eof(gv)) { /* make sure we have fp with something */
if ((!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
&& ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
TAINT;
sv_setpvn(TARG, " ", 1);
*SvPVX(TARG) = PerlIO_getc(IoIFP(GvIOp(gv))); /* should never be EOF */
if (PerlIO_isutf8(IoIFP(GvIOp(gv)))) {
/* Find out how many bytes the char needs */
Size_t len = UTF8SKIP(SvPVX_const(TARG));
if (len > 1) {
SvGROW(TARG,len+1);
len = PerlIO_read(IoIFP(GvIOp(gv)),SvPVX(TARG)+1,len-1);
SvCUR_set(TARG,1+len);
}
SvUTF8_on(TARG);
}
PUSHTARG;
RETURN;
}
STATIC OP *
S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
{
dVAR;
register PERL_CONTEXT *cx;
const I32 gimme = GIMME_V;
ENTER;
SAVETMPS;
PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
PUSHFORMAT(cx);
cx->blk_sub.retop = retop;
SAVECOMPPAD();
PAD_SET_CUR_NOSAVE(CvPADLIST(cv), 1);
setdefout(gv); /* locally select filehandle so $% et al work */
return CvSTART(cv);
}
PP(pp_enterwrite)
{
dVAR;
dSP;
register GV *gv;
register IO *io;
GV *fgv;
CV *cv;
if (MAXARG == 0)
gv = PL_defoutgv;
else {
gv = (GV*)POPs;
if (!gv)
gv = PL_defoutgv;
}
EXTEND(SP, 1);
io = GvIO(gv);
if (!io) {
RETPUSHNO;
}
if (IoFMT_GV(io))
fgv = IoFMT_GV(io);
else
fgv = gv;
cv = GvFORM(fgv);
if (!cv) {
if (fgv) {
SV * const tmpsv = sv_newmortal();
const char *name;
gv_efullname4(tmpsv, fgv, Nullch, FALSE);
name = SvPV_nolen_const(tmpsv);
if (name && *name)
DIE(aTHX_ "Undefined format \"%s\" called", name);
}
DIE(aTHX_ "Not a format reference");
}
if (CvCLONE(cv))
cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
IoFLAGS(io) &= ~IOf_DIDTOP;
return doform(cv,gv,PL_op->op_next);
}
PP(pp_leavewrite)
{
dVAR; dSP;
GV * const gv = cxstack[cxstack_ix].blk_sub.gv;
register IO * const io = GvIOp(gv);
PerlIO * const ofp = IoOFP(io);
PerlIO *fp;
SV **newsp;
I32 gimme;
register PERL_CONTEXT *cx;
DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
(long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
if (!io || !ofp)
goto forget_top;
if (IoLINES_LEFT(io) < FmLINES(PL_formtarget) &&
PL_formtarget != PL_toptarget)
{
GV *fgv;
CV *cv;
if (!IoTOP_GV(io)) {
GV *topgv;
if (!IoTOP_NAME(io)) {
SV *topname;
if (!IoFMT_NAME(io))
IoFMT_NAME(io) = savepv(GvNAME(gv));
topname = sv_2mortal(Perl_newSVpvf(aTHX_ "%s_TOP", GvNAME(gv)));
topgv = gv_fetchsv(topname, 0, SVt_PVFM);
if ((topgv && GvFORM(topgv)) ||
!gv_fetchpv("top", 0, SVt_PVFM))
IoTOP_NAME(io) = savesvpv(topname);
else
IoTOP_NAME(io) = savepvs("top");
}
topgv = gv_fetchpv(IoTOP_NAME(io), 0, SVt_PVFM);
if (!topgv || !GvFORM(topgv)) {
IoLINES_LEFT(io) = IoPAGE_LEN(io);
goto forget_top;
}
IoTOP_GV(io) = topgv;
}
if (IoFLAGS(io) & IOf_DIDTOP) { /* Oh dear. It still doesn't fit. */
I32 lines = IoLINES_LEFT(io);
const char *s = SvPVX_const(PL_formtarget);
if (lines <= 0) /* Yow, header didn't even fit!!! */
goto forget_top;
while (lines-- > 0) {
s = strchr(s, '\n');
if (!s)
break;
s++;
}
if (s) {
const STRLEN save = SvCUR(PL_formtarget);
SvCUR_set(PL_formtarget, s - SvPVX_const(PL_formtarget));
do_print(PL_formtarget, ofp);
SvCUR_set(PL_formtarget, save);
sv_chop(PL_formtarget, s);
FmLINES(PL_formtarget) -= IoLINES_LEFT(io);
}
}
if (IoLINES_LEFT(io) >= 0 && IoPAGE(io) > 0)
do_print(PL_formfeed, ofp);
IoLINES_LEFT(io) = IoPAGE_LEN(io);
IoPAGE(io)++;
PL_formtarget = PL_toptarget;
IoFLAGS(io) |= IOf_DIDTOP;
fgv = IoTOP_GV(io);
if (!fgv)
DIE(aTHX_ "bad top format reference");
cv = GvFORM(fgv);
if (!cv) {
SV * const sv = sv_newmortal();
const char *name;
gv_efullname4(sv, fgv, Nullch, FALSE);
name = SvPV_nolen_const(sv);
if (name && *name)
DIE(aTHX_ "Undefined top format \"%s\" called",name);
}
/* why no:
else
DIE(aTHX_ "Undefined top format called");
?*/
if (CvCLONE(cv))
cv = (CV*)sv_2mortal((SV*)cv_clone(cv));
return doform(cv,gv,PL_op);
}
forget_top:
POPBLOCK(cx,PL_curpm);
POPFORMAT(cx);
LEAVE;
fp = IoOFP(io);
if (!fp) {
if (ckWARN2(WARN_CLOSED,WARN_IO)) {
if (IoIFP(io))
report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
else if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
}
PUSHs(&PL_sv_no);
}
else {
if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
if (ckWARN(WARN_IO))
Perl_warner(aTHX_ packWARN(WARN_IO), "page overflow");
}
if (!do_print(PL_formtarget, fp))
PUSHs(&PL_sv_no);
else {
FmLINES(PL_formtarget) = 0;
SvCUR_set(PL_formtarget, 0);
*SvEND(PL_formtarget) = '\0';
if (IoFLAGS(io) & IOf_FLUSH)
(void)PerlIO_flush(fp);
PUSHs(&PL_sv_yes);
}
}
/* bad_ofp: */
PL_formtarget = PL_bodytarget;
PUTBACK;
PERL_UNUSED_VAR(newsp);
PERL_UNUSED_VAR(gimme);
return cx->blk_sub.retop;
}
PP(pp_prtf)
{
dVAR; dSP; dMARK; dORIGMARK;
IO *io;
PerlIO *fp;
SV *sv;
MAGIC *mg;
GV * const gv = (PL_op->op_flags & OPf_STACKED) ? (GV*)*++MARK : PL_defoutgv;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
if (MARK == ORIGMARK) {
MEXTEND(SP, 1);
++MARK;
Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
++SP;
}
PUSHMARK(MARK - 1);
*MARK = SvTIED_obj((SV*)io, mg);
PUTBACK;
ENTER;
call_method("PRINTF", G_SCALAR);
LEAVE;
SPAGAIN;
MARK = ORIGMARK + 1;
*MARK = *SP;
SP = MARK;
RETURN;
}
sv = newSV(0);
if (!(io = GvIO(gv))) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI);
goto just_say_no;
}
else if (!(fp = IoOFP(io))) {
if (ckWARN2(WARN_CLOSED,WARN_IO)) {
if (IoIFP(io))
report_evil_fh(gv, io, OP_phoney_INPUT_ONLY);
else if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
}
SETERRNO(EBADF,IoIFP(io)?RMS_FAC:RMS_IFI);
goto just_say_no;
}
else {
do_sprintf(sv, SP - MARK, MARK + 1);
if (!do_print(sv, fp))
goto just_say_no;
if (IoFLAGS(io) & IOf_FLUSH)
if (PerlIO_flush(fp) == EOF)
goto just_say_no;
}
SvREFCNT_dec(sv);
SP = ORIGMARK;
PUSHs(&PL_sv_yes);
RETURN;
just_say_no:
SvREFCNT_dec(sv);
SP = ORIGMARK;
PUSHs(&PL_sv_undef);
RETURN;
}
PP(pp_sysopen)
{
dVAR;
dSP;
const int perm = (MAXARG > 3) ? POPi : 0666;
const int mode = POPi;
SV * const sv = POPs;
GV * const gv = (GV *)POPs;
STRLEN len;
/* Need TIEHANDLE method ? */
const char * const tmps = SvPV_const(sv, len);
/* FIXME? do_open should do const */
if (do_open(gv, tmps, len, TRUE, mode, perm, Nullfp)) {
IoLINES(GvIOp(gv)) = 0;
PUSHs(&PL_sv_yes);
}
else {
PUSHs(&PL_sv_undef);
}
RETURN;
}
PP(pp_sysread)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
int offset;
IO *io;
char *buffer;
SSize_t length;
SSize_t count;
Sock_size_t bufsize;
SV *bufsv;
STRLEN blen;
int fp_utf8;
int buffer_utf8;
SV *read_target;
Size_t got = 0;
Size_t wanted;
bool charstart = FALSE;
STRLEN charskip = 0;
STRLEN skip = 0;
GV * const gv = (GV*)*++MARK;
if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
&& gv && (io = GvIO(gv)) )
{
const MAGIC * mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar);
if (mg) {
SV *sv;
PUSHMARK(MARK-1);
*MARK = SvTIED_obj((SV*)io, mg);
ENTER;
call_method("READ", G_SCALAR);
LEAVE;
SPAGAIN;
sv = POPs;
SP = ORIGMARK;
PUSHs(sv);
RETURN;
}
}
if (!gv)
goto say_undef;
bufsv = *++MARK;
if (! SvOK(bufsv))
sv_setpvn(bufsv, "", 0);
length = SvIVx(*++MARK);
SETERRNO(0,0);
if (MARK < SP)
offset = SvIVx(*++MARK);
else
offset = 0;
io = GvIO(gv);
if (!io || !IoIFP(io)) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI);
goto say_undef;
}
if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTES) {
buffer = SvPVutf8_force(bufsv, blen);
/* UTF-8 may not have been set if they are all low bytes */
SvUTF8_on(bufsv);
buffer_utf8 = 0;
}
else {
buffer = SvPV_force(bufsv, blen);
buffer_utf8 = !IN_BYTES && SvUTF8(bufsv);
}
if (length < 0)
DIE(aTHX_ "Negative length");
wanted = length;
charstart = TRUE;
charskip = 0;
skip = 0;
#ifdef HAS_SOCKET
if (PL_op->op_type == OP_RECV) {
char namebuf[MAXPATHLEN];
#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
bufsize = sizeof (struct sockaddr_in);
#else
bufsize = sizeof namebuf;
#endif
#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
if (bufsize >= 256)
bufsize = 255;
#endif
buffer = SvGROW(bufsv, (STRLEN)(length+1));
/* 'offset' means 'flags' here */
count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
(struct sockaddr *)namebuf, &bufsize);
if (count < 0)
RETPUSHUNDEF;
#ifdef EPOC
/* Bogus return without padding */
bufsize = sizeof (struct sockaddr_in);
#endif
SvCUR_set(bufsv, count);
*SvEND(bufsv) = '\0';
(void)SvPOK_only(bufsv);
if (fp_utf8)
SvUTF8_on(bufsv);
SvSETMAGIC(bufsv);
/* This should not be marked tainted if the fp is marked clean */
if (!(IoFLAGS(io) & IOf_UNTAINT))
SvTAINTED_on(bufsv);
SP = ORIGMARK;
sv_setpvn(TARG, namebuf, bufsize);
PUSHs(TARG);
RETURN;
}
#else
if (PL_op->op_type == OP_RECV)
DIE(aTHX_ PL_no_sock_func, "recv");
#endif
if (DO_UTF8(bufsv)) {
/* offset adjust in characters not bytes */
blen = sv_len_utf8(bufsv);
}
if (offset < 0) {
if (-offset > (int)blen)
DIE(aTHX_ "Offset outside string");
offset += blen;
}
if (DO_UTF8(bufsv)) {
/* convert offset-as-chars to offset-as-bytes */
if (offset >= (int)blen)
offset += SvCUR(bufsv) - blen;
else
offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
}
more_bytes:
bufsize = SvCUR(bufsv);
/* Allocating length + offset + 1 isn't perfect in the case of reading
bytes from a byte file handle into a UTF8 buffer, but it won't harm us
unduly.
(should be 2 * length + offset + 1, or possibly something longer if
PL_encoding is true) */
buffer = SvGROW(bufsv, (STRLEN)(length+offset+1));
if (offset > 0 && (Sock_size_t)offset > bufsize) { /* Zero any newly allocated space */
Zero(buffer+bufsize, offset-bufsize, char);
}
buffer = buffer + offset;
if (!buffer_utf8) {
read_target = bufsv;
} else {
/* Best to read the bytes into a new SV, upgrade that to UTF8, then
concatenate it to the current buffer. */
/* Truncate the existing buffer to the start of where we will be
reading to: */
SvCUR_set(bufsv, offset);
read_target = sv_newmortal();
SvUPGRADE(read_target, SVt_PV);
buffer = SvGROW(read_target, (STRLEN)(length + 1));
}
if (PL_op->op_type == OP_SYSREAD) {
#ifdef PERL_SOCK_SYSREAD_IS_RECV
if (IoTYPE(io) == IoTYPE_SOCKET) {
count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
buffer, length, 0);
}
else
#endif
{
count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
buffer, length);
}
}
else
#ifdef HAS_SOCKET__bad_code_maybe
if (IoTYPE(io) == IoTYPE_SOCKET) {
char namebuf[MAXPATHLEN];
#if defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)
bufsize = sizeof (struct sockaddr_in);
#else
bufsize = sizeof namebuf;
#endif
count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
(struct sockaddr *)namebuf, &bufsize);
}
else
#endif
{
count = PerlIO_read(IoIFP(io), buffer, length);
/* PerlIO_read() - like fread() returns 0 on both error and EOF */
if (count == 0 && PerlIO_error(IoIFP(io)))
count = -1;
}
if (count < 0) {
if ((IoTYPE(io) == IoTYPE_WRONLY) && ckWARN(WARN_IO))
report_evil_fh(gv, io, OP_phoney_OUTPUT_ONLY);
goto say_undef;
}
SvCUR_set(read_target, count+(buffer - SvPVX_const(read_target)));
*SvEND(read_target) = '\0';
(void)SvPOK_only(read_target);
if (fp_utf8 && !IN_BYTES) {
/* Look at utf8 we got back and count the characters */
const char *bend = buffer + count;
while (buffer < bend) {
if (charstart) {
skip = UTF8SKIP(buffer);
charskip = 0;
}
if (buffer - charskip + skip > bend) {
/* partial character - try for rest of it */
length = skip - (bend-buffer);
offset = bend - SvPVX_const(bufsv);
charstart = FALSE;
charskip += count;
goto more_bytes;
}
else {
got++;
buffer += skip;
charstart = TRUE;
charskip = 0;
}
}
/* If we have not 'got' the number of _characters_ we 'wanted' get some more
provided amount read (count) was what was requested (length)
*/
if (got < wanted && count == length) {
length = wanted - got;
offset = bend - SvPVX_const(bufsv);
goto more_bytes;
}
/* return value is character count */
count = got;
SvUTF8_on(bufsv);
}
else if (buffer_utf8) {
/* Let svcatsv upgrade the bytes we read in to utf8.
The buffer is a mortal so will be freed soon. */
sv_catsv_nomg(bufsv, read_target);
}
SvSETMAGIC(bufsv);
/* This should not be marked tainted if the fp is marked clean */
if (!(IoFLAGS(io) & IOf_UNTAINT))
SvTAINTED_on(bufsv);
SP = ORIGMARK;
PUSHi(count);
RETURN;
say_undef:
SP = ORIGMARK;
RETPUSHUNDEF;
}
PP(pp_send)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
IO *io;
SV *bufsv;
const char *buffer;
Size_t length = 0;
SSize_t retval;
STRLEN blen;
MAGIC *mg;
const int op_type = PL_op->op_type;
GV *const gv = (GV*)*++MARK;
if (PL_op->op_type == OP_SYSWRITE
&& gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
SV *sv;
if (MARK == SP - 1) {
EXTEND(SP, 1000);
sv = sv_2mortal(newSViv(sv_len(*SP)));
PUSHs(sv);
PUTBACK;
}
PUSHMARK(ORIGMARK);
*(ORIGMARK+1) = SvTIED_obj((SV*)io, mg);
ENTER;
call_method("WRITE", G_SCALAR);
LEAVE;
SPAGAIN;
sv = POPs;
SP = ORIGMARK;
PUSHs(sv);
RETURN;
}
if (!gv)
goto say_undef;
bufsv = *++MARK;
if (op_type == OP_SYSWRITE) {
if (MARK >= SP) {
length = (Size_t) sv_len(bufsv);
} else {
#if Size_t_size > IVSIZE
length = (Size_t)SvNVx(*++MARK);
#else
length = (Size_t)SvIVx(*++MARK);
#endif
if ((SSize_t)length < 0)
DIE(aTHX_ "Negative length");
}
}
SETERRNO(0,0);
io = GvIO(gv);
if (!io || !IoIFP(io)) {
retval = -1;
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI);
goto say_undef;
}
if (PerlIO_isutf8(IoIFP(io))) {
if (!SvUTF8(bufsv)) {
bufsv = sv_2mortal(newSVsv(bufsv));
buffer = sv_2pvutf8(bufsv, &blen);
} else
buffer = SvPV_const(bufsv, blen);
}
else {
if (DO_UTF8(bufsv)) {
/* Not modifying source SV, so making a temporary copy. */
bufsv = sv_2mortal(newSVsv(bufsv));
sv_utf8_downgrade(bufsv, FALSE);
}
buffer = SvPV_const(bufsv, blen);
}
if (op_type == OP_SYSWRITE) {
IV offset;
if (DO_UTF8(bufsv)) {
/* length and offset are in chars */
blen = sv_len_utf8(bufsv);
}
if (MARK < SP) {
offset = SvIVx(*++MARK);
if (offset < 0) {
if (-offset > (IV)blen)
DIE(aTHX_ "Offset outside string");
offset += blen;
} else if (offset >= (IV)blen && blen > 0)
DIE(aTHX_ "Offset outside string");
} else
offset = 0;
if (length > blen - offset)
length = blen - offset;
if (DO_UTF8(bufsv)) {
buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
}
else {
buffer = buffer+offset;
}
#ifdef PERL_SOCK_SYSWRITE_IS_SEND
if (IoTYPE(io) == IoTYPE_SOCKET) {
retval = PerlSock_send(PerlIO_fileno(IoIFP(io)),
buffer, length, 0);
}
else
#endif
{
/* See the note at doio.c:do_print about filesize limits. --jhi */
retval = PerlLIO_write(PerlIO_fileno(IoIFP(io)),
buffer, length);
}
}
#ifdef HAS_SOCKET
else {
const int flags = SvIVx(*++MARK);
if (SP > MARK) {
STRLEN mlen;
char * const sockbuf = SvPVx(*++MARK, mlen);
retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
flags, (struct sockaddr *)sockbuf, mlen);
}
else {
retval
= PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, flags);
}
}
#else
else
DIE(aTHX_ PL_no_sock_func, "send");
#endif
if (retval < 0)
goto say_undef;
SP = ORIGMARK;
if (DO_UTF8(bufsv))
retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
#if Size_t_size > IVSIZE
PUSHn(retval);
#else
PUSHi(retval);
#endif
RETURN;
say_undef:
SP = ORIGMARK;
RETPUSHUNDEF;
}
PP(pp_eof)
{
dVAR; dSP;
GV *gv;
if (MAXARG == 0) {
if (PL_op->op_flags & OPf_SPECIAL) { /* eof() */
IO *io;
gv = PL_last_in_gv = GvEGV(PL_argvgv);
io = GvIO(gv);
if (io && !IoIFP(io)) {
if ((IoFLAGS(io) & IOf_START) && av_len(GvAVn(gv)) < 0) {
IoLINES(io) = 0;
IoFLAGS(io) &= ~IOf_START;
do_open(gv, "-", 1, FALSE, O_RDONLY, 0, Nullfp);
sv_setpvn(GvSV(gv), "-", 1);
SvSETMAGIC(GvSV(gv));
}
else if (!nextargv(gv))
RETPUSHYES;
}
}
else
gv = PL_last_in_gv; /* eof */
}
else
gv = PL_last_in_gv = (GV*)POPs; /* eof(FH) */
if (gv) {
IO * const io = GvIO(gv);
MAGIC * mg;
if (io && (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar))) {
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
PUTBACK;
ENTER;
call_method("EOF", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
}
PUSHs(boolSV(!gv || do_eof(gv)));
RETURN;
}
PP(pp_tell)
{
dVAR; dSP; dTARGET;
GV *gv;
IO *io;
MAGIC *mg;
if (MAXARG != 0)
PL_last_in_gv = (GV*)POPs;
gv = PL_last_in_gv;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
PUTBACK;
ENTER;
call_method("TELL", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
#if LSEEKSIZE > IVSIZE
PUSHn( do_tell(gv) );
#else
PUSHi( do_tell(gv) );
#endif
RETURN;
}
PP(pp_sysseek)
{
dVAR; dSP;
IO *io;
const int whence = POPi;
#if LSEEKSIZE > IVSIZE
const Off_t offset = (Off_t)SvNVx(POPs);
#else
const Off_t offset = (Off_t)SvIVx(POPs);
#endif
MAGIC *mg;
GV * const gv = PL_last_in_gv = (GV*)POPs;
if (gv && (io = GvIO(gv))
&& (mg = SvTIED_mg((SV*)io, PERL_MAGIC_tiedscalar)))
{
PUSHMARK(SP);
XPUSHs(SvTIED_obj((SV*)io, mg));
#if LSEEKSIZE > IVSIZE
XPUSHs(sv_2mortal(newSVnv((NV) offset)));
#else
XPUSHs(sv_2mortal(newSViv(offset)));
#endif
XPUSHs(sv_2mortal(newSViv(whence)));
PUTBACK;
ENTER;
call_method("SEEK", G_SCALAR);
LEAVE;
SPAGAIN;
RETURN;
}
if (PL_op->op_type == OP_SEEK)
PUSHs(boolSV(do_seek(gv, offset, whence)));
else {
const Off_t sought = do_sysseek(gv, offset, whence);
if (sought < 0)
PUSHs(&PL_sv_undef);
else {
SV* const sv = sought ?
#if LSEEKSIZE > IVSIZE
newSVnv((NV)sought)
#else
newSViv(sought)
#endif
: newSVpvn(zero_but_true, ZBTLEN);
PUSHs(sv_2mortal(sv));
}
}
RETURN;
}
PP(pp_truncate)
{
dVAR;
dSP;
/* There seems to be no consensus on the length type of truncate()
* and ftruncate(), both off_t and size_t have supporters. In
* general one would think that when using large files, off_t is
* at least as wide as size_t, so using an off_t should be okay. */
/* XXX Configure probe for the length type of *truncate() needed XXX */
Off_t len;
#if Off_t_size > IVSIZE
len = (Off_t)POPn;
#else
len = (Off_t)POPi;
#endif
/* Checking for length < 0 is problematic as the type might or
* might not be signed: if it is not, clever compilers will moan. */
/* XXX Configure probe for the signedness of the length type of *truncate() needed? XXX */
SETERRNO(0,0);
{
int result = 1;
GV *tmpgv;
IO *io;
if (PL_op->op_flags & OPf_SPECIAL) {
tmpgv = gv_fetchsv(POPs, 0, SVt_PVIO);
do_ftruncate_gv:
if (!GvIO(tmpgv))
result = 0;
else {
PerlIO *fp;
io = GvIOp(tmpgv);
do_ftruncate_io:
TAINT_PROPER("truncate");
if (!(fp = IoIFP(io))) {
result = 0;
}
else {
PerlIO_flush(fp);
#ifdef HAS_TRUNCATE
if (ftruncate(PerlIO_fileno(fp), len) < 0)
#else
if (my_chsize(PerlIO_fileno(fp), len) < 0)
#endif
result = 0;
}
}
}
else {
SV * const sv = POPs;
const char *name;
if (SvTYPE(sv) == SVt_PVGV) {
tmpgv = (GV*)sv; /* *main::FRED for example */
goto do_ftruncate_gv;
}
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
tmpgv = (GV*) SvRV(sv); /* \*main::FRED for example */
goto do_ftruncate_gv;
}
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
io = (IO*) SvRV(sv); /* *main::FRED{IO} for example */
goto do_ftruncate_io;
}
name = SvPV_nolen_const(sv);
TAINT_PROPER("truncate");
#ifdef HAS_TRUNCATE
if (truncate(name, len) < 0)
result = 0;
#else
{
const int tmpfd = PerlLIO_open(name, O_RDWR);
if (tmpfd < 0)
result = 0;
else {
if (my_chsize(tmpfd, len) < 0)
result = 0;
PerlLIO_close(tmpfd);
}
}
#endif
}
if (result)
RETPUSHYES;
if (!errno)
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
}
PP(pp_ioctl)
{
dVAR; dSP; dTARGET;
SV * const argsv = POPs;
const unsigned int func = POPu;
const int optype = PL_op->op_type;
GV * const gv = (GV*)POPs;
IO * const io = gv ? GvIOn(gv) : Null(IO*);
char *s;
IV retval;
if (!io || !argsv || !IoIFP(io)) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS_IFI); /* well, sort of... */
RETPUSHUNDEF;
}
if (SvPOK(argsv) || !SvNIOK(argsv)) {
STRLEN len;
STRLEN need;
s = SvPV_force(argsv, len);
need = IOCPARM_LEN(func);
if (len < need) {
s = Sv_Grow(argsv, need + 1);
SvCUR_set(argsv, need);
}
s[SvCUR(argsv)] = 17; /* a little sanity check here */
}
else {
retval = SvIV(argsv);
s = INT2PTR(char*,retval); /* ouch */
}
TAINT_PROPER(PL_op_desc[optype]);
if (optype == OP_IOCTL)
#ifdef HAS_IOCTL
retval = PerlLIO_ioctl(PerlIO_fileno(IoIFP(io)), func, s);
#else
DIE(aTHX_ "ioctl is not implemented");
#endif
else
#ifndef HAS_FCNTL
DIE(aTHX_ "fcntl is not implemented");
#else
#if defined(OS2) && defined(__EMX__)
retval = fcntl(PerlIO_fileno(IoIFP(io)), func, (int)s);
#else
retval = fcntl(PerlIO_fileno(IoIFP(io)), func, s);
#endif
#endif
#if defined(HAS_IOCTL) || defined(HAS_FCNTL)
if (SvPOK(argsv)) {
if (s[SvCUR(argsv)] != 17)
DIE(aTHX_ "Possible memory corruption: %s overflowed 3rd argument",
OP_NAME(PL_op));
s[SvCUR(argsv)] = 0; /* put our null back */
SvSETMAGIC(argsv); /* Assume it has changed */
}
if (retval == -1)
RETPUSHUNDEF;
if (retval != 0) {
PUSHi(retval);
}
else {
PUSHp(zero_but_true, ZBTLEN);
}
#endif
RETURN;
}
PP(pp_flock)
{
#ifdef FLOCK
dVAR; dSP; dTARGET;
I32 value;
IO *io = NULL;
PerlIO *fp;
const int argtype = POPi;
GV * const gv = (MAXARG == 0) ? PL_last_in_gv : (GV*)POPs;
if (gv && (io = GvIO(gv)))
fp = IoIFP(io);
else {
fp = Nullfp;
io = NULL;
}
/* XXX Looks to me like io is always NULL at this point */
if (fp) {
(void)PerlIO_flush(fp);
value = (I32)(PerlLIO_flock(PerlIO_fileno(fp), argtype) >= 0);
}
else {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
value = 0;
SETERRNO(EBADF,RMS_IFI);
}
PUSHi(value);
RETURN;
#else
DIE(aTHX_ PL_no_func, "flock()");
#endif
}
/* Sockets. */
PP(pp_socket)
{
#ifdef HAS_SOCKET
dVAR; dSP;
const int protocol = POPi;
const int type = POPi;
const int domain = POPi;
GV * const gv = (GV*)POPs;
register IO * const io = gv ? GvIOn(gv) : NULL;
int fd;
if (!gv || !io) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
if (IoIFP(io))
do_close(gv, FALSE);
SETERRNO(EBADF,LIB_INVARG);
RETPUSHUNDEF;
}
if (IoIFP(io))
do_close(gv, FALSE);
TAINT_PROPER("socket");
fd = PerlSock_socket(domain, type, protocol);
if (fd < 0)
RETPUSHUNDEF;
IoIFP(io) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE); /* stdio gets confused about sockets */
IoOFP(io) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
IoTYPE(io) = IoTYPE_SOCKET;
if (!IoIFP(io) || !IoOFP(io)) {
if (IoIFP(io)) PerlIO_close(IoIFP(io));
if (IoOFP(io)) PerlIO_close(IoOFP(io));
if (!IoIFP(io) && !IoOFP(io)) PerlLIO_close(fd);
RETPUSHUNDEF;
}
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
#endif
#ifdef EPOC
setbuf( IoIFP(io), NULL); /* EPOC gets confused about sockets */
#endif
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "socket");
#endif
}
PP(pp_sockpair)
{
#if defined (HAS_SOCKETPAIR) || (defined (HAS_SOCKET) && defined(SOCK_DGRAM) && defined(AF_INET) && defined(PF_INET))
dVAR; dSP;
const int protocol = POPi;
const int type = POPi;
const int domain = POPi;
GV * const gv2 = (GV*)POPs;
GV * const gv1 = (GV*)POPs;
register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
int fd[2];
if (!gv1 || !gv2 || !io1 || !io2) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
if (!gv1 || !io1)
report_evil_fh(gv1, io1, PL_op->op_type);
if (!gv2 || !io2)
report_evil_fh(gv1, io2, PL_op->op_type);
}
if (IoIFP(io1))
do_close(gv1, FALSE);
if (IoIFP(io2))
do_close(gv2, FALSE);
RETPUSHUNDEF;
}
if (IoIFP(io1))
do_close(gv1, FALSE);
if (IoIFP(io2))
do_close(gv2, FALSE);
TAINT_PROPER("socketpair");
if (PerlSock_socketpair(domain, type, protocol, fd) < 0)
RETPUSHUNDEF;
IoIFP(io1) = PerlIO_fdopen(fd[0], "r"SOCKET_OPEN_MODE);
IoOFP(io1) = PerlIO_fdopen(fd[0], "w"SOCKET_OPEN_MODE);
IoTYPE(io1) = IoTYPE_SOCKET;
IoIFP(io2) = PerlIO_fdopen(fd[1], "r"SOCKET_OPEN_MODE);
IoOFP(io2) = PerlIO_fdopen(fd[1], "w"SOCKET_OPEN_MODE);
IoTYPE(io2) = IoTYPE_SOCKET;
if (!IoIFP(io1) || !IoOFP(io1) || !IoIFP(io2) || !IoOFP(io2)) {
if (IoIFP(io1)) PerlIO_close(IoIFP(io1));
if (IoOFP(io1)) PerlIO_close(IoOFP(io1));
if (!IoIFP(io1) && !IoOFP(io1)) PerlLIO_close(fd[0]);
if (IoIFP(io2)) PerlIO_close(IoIFP(io2));
if (IoOFP(io2)) PerlIO_close(IoOFP(io2));
if (!IoIFP(io2) && !IoOFP(io2)) PerlLIO_close(fd[1]);
RETPUSHUNDEF;
}
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(fd[0],F_SETFD,fd[0] > PL_maxsysfd); /* ensure close-on-exec */
fcntl(fd[1],F_SETFD,fd[1] > PL_maxsysfd); /* ensure close-on-exec */
#endif
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "socketpair");
#endif
}
PP(pp_bind)
{
#ifdef HAS_SOCKET
dVAR; dSP;
SV * const addrsv = POPs;
/* OK, so on what platform does bind modify addr? */
const char *addr;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
STRLEN len;
int bind_ok = 0;
if (!io || !IoIFP(io))
goto nuts;
addr = SvPV_const(addrsv, len);
TAINT_PROPER("bind");
if (PerlSock_bind(PerlIO_fileno(IoIFP(io)),
(struct sockaddr *)addr, len) >= 0)
bind_ok = 1;
if (bind_ok)
RETPUSHYES;
else
RETPUSHUNDEF;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, "bind");
#endif
}
PP(pp_connect)
{
#ifdef HAS_SOCKET
dVAR; dSP;
SV * const addrsv = POPs;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
const char *addr;
STRLEN len;
if (!io || !IoIFP(io))
goto nuts;
addr = SvPV_const(addrsv, len);
TAINT_PROPER("connect");
if (PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len) >= 0)
RETPUSHYES;
else
RETPUSHUNDEF;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, "connect");
#endif
}
PP(pp_listen)
{
#ifdef HAS_SOCKET
dVAR; dSP;
const int backlog = POPi;
GV * const gv = (GV*)POPs;
register IO * const io = gv ? GvIOn(gv) : NULL;
if (!gv || !io || !IoIFP(io))
goto nuts;
if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
RETPUSHYES;
else
RETPUSHUNDEF;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, "listen");
#endif
}
PP(pp_accept)
{
#ifdef HAS_SOCKET
dVAR; dSP; dTARGET;
register IO *nstio;
register IO *gstio;
char namebuf[MAXPATHLEN];
#if (defined(VMS_DO_SOCKETS) && defined(DECCRTL_SOCKETS)) || defined(MPE) || defined(__QNXNTO__)
Sock_size_t len = sizeof (struct sockaddr_in);
#else
Sock_size_t len = sizeof namebuf;
#endif
GV * const ggv = (GV*)POPs;
GV * const ngv = (GV*)POPs;
int fd;
if (!ngv)
goto badexit;
if (!ggv)
goto nuts;
gstio = GvIO(ggv);
if (!gstio || !IoIFP(gstio))
goto nuts;
nstio = GvIOn(ngv);
fd = PerlSock_accept(PerlIO_fileno(IoIFP(gstio)), (struct sockaddr *) namebuf, &len);
if (fd < 0)
goto badexit;
if (IoIFP(nstio))
do_close(ngv, FALSE);
IoIFP(nstio) = PerlIO_fdopen(fd, "r"SOCKET_OPEN_MODE);
IoOFP(nstio) = PerlIO_fdopen(fd, "w"SOCKET_OPEN_MODE);
IoTYPE(nstio) = IoTYPE_SOCKET;
if (!IoIFP(nstio) || !IoOFP(nstio)) {
if (IoIFP(nstio)) PerlIO_close(IoIFP(nstio));
if (IoOFP(nstio)) PerlIO_close(IoOFP(nstio));
if (!IoIFP(nstio) && !IoOFP(nstio)) PerlLIO_close(fd);
goto badexit;
}
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(fd, F_SETFD, fd > PL_maxsysfd); /* ensure close-on-exec */
#endif
#ifdef EPOC
len = sizeof (struct sockaddr_in); /* EPOC somehow truncates info */
setbuf( IoIFP(nstio), NULL); /* EPOC gets confused about sockets */
#endif
#ifdef __SCO_VERSION__
len = sizeof (struct sockaddr_in); /* OpenUNIX 8 somehow truncates info */
#endif
PUSHp(namebuf, len);
RETURN;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(ggv, ggv ? GvIO(ggv) : 0, PL_op->op_type);
SETERRNO(EBADF,SS_IVCHAN);
badexit:
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, "accept");
#endif
}
PP(pp_shutdown)
{
#ifdef HAS_SOCKET
dVAR; dSP; dTARGET;
const int how = POPi;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io || !IoIFP(io))
goto nuts;
PUSHi( PerlSock_shutdown(PerlIO_fileno(IoIFP(io)), how) >= 0 );
RETURN;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, "shutdown");
#endif
}
PP(pp_ssockopt)
{
#ifdef HAS_SOCKET
dVAR; dSP;
const int optype = PL_op->op_type;
SV * const sv = (optype == OP_GSOCKOPT) ? sv_2mortal(newSV(257)) : POPs;
const unsigned int optname = (unsigned int) POPi;
const unsigned int lvl = (unsigned int) POPi;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
int fd;
Sock_size_t len;
if (!io || !IoIFP(io))
goto nuts;
fd = PerlIO_fileno(IoIFP(io));
switch (optype) {
case OP_GSOCKOPT:
SvGROW(sv, 257);
(void)SvPOK_only(sv);
SvCUR_set(sv,256);
*SvEND(sv) ='\0';
len = SvCUR(sv);
if (PerlSock_getsockopt(fd, lvl, optname, SvPVX(sv), &len) < 0)
goto nuts2;
SvCUR_set(sv, len);
*SvEND(sv) ='\0';
PUSHs(sv);
break;
case OP_SSOCKOPT: {
#if defined(__SYMBIAN32__)
# define SETSOCKOPT_OPTION_VALUE_T void *
#else
# define SETSOCKOPT_OPTION_VALUE_T const char *
#endif
/* XXX TODO: We need to have a proper type (a Configure probe,
* etc.) for what the C headers think of the third argument of
* setsockopt(), the option_value read-only buffer: is it
* a "char *", or a "void *", const or not. Some compilers
* don't take kindly to e.g. assuming that "char *" implicitly
* promotes to a "void *", or to explicitly promoting/demoting
* consts to non/vice versa. The "const void *" is the SUS
* definition, but that does not fly everywhere for the above
* reasons. */
SETSOCKOPT_OPTION_VALUE_T buf;
int aint;
if (SvPOKp(sv)) {
STRLEN l;
buf = (SETSOCKOPT_OPTION_VALUE_T) SvPV_const(sv, l);
len = l;
}
else {
aint = (int)SvIV(sv);
buf = (SETSOCKOPT_OPTION_VALUE_T) &aint;
len = sizeof(int);
}
if (PerlSock_setsockopt(fd, lvl, optname, buf, len) < 0)
goto nuts2;
PUSHs(&PL_sv_yes);
}
break;
}
RETURN;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, optype);
SETERRNO(EBADF,SS_IVCHAN);
nuts2:
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
#endif
}
PP(pp_getpeername)
{
#ifdef HAS_SOCKET
dVAR; dSP;
const int optype = PL_op->op_type;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
Sock_size_t len;
SV *sv;
int fd;
if (!io || !IoIFP(io))
goto nuts;
sv = sv_2mortal(newSV(257));
(void)SvPOK_only(sv);
len = 256;
SvCUR_set(sv, len);
*SvEND(sv) ='\0';
fd = PerlIO_fileno(IoIFP(io));
switch (optype) {
case OP_GETSOCKNAME:
if (PerlSock_getsockname(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
goto nuts2;
break;
case OP_GETPEERNAME:
if (PerlSock_getpeername(fd, (struct sockaddr *)SvPVX(sv), &len) < 0)
goto nuts2;
#if defined(VMS_DO_SOCKETS) && defined (DECCRTL_SOCKETS)
{
static const char nowhere[] = "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
/* If the call succeeded, make sure we don't have a zeroed port/addr */
if (((struct sockaddr *)SvPVX_const(sv))->sa_family == AF_INET &&
!memcmp(SvPVX_const(sv) + sizeof(u_short), nowhere,
sizeof(u_short) + sizeof(struct in_addr))) {
goto nuts2;
}
}
#endif
break;
}
#ifdef BOGUS_GETNAME_RETURN
/* Interactive Unix, getpeername() and getsockname()
does not return valid namelen */
if (len == BOGUS_GETNAME_RETURN)
len = sizeof(struct sockaddr);
#endif
SvCUR_set(sv, len);
*SvEND(sv) ='\0';
PUSHs(sv);
RETURN;
nuts:
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, optype);
SETERRNO(EBADF,SS_IVCHAN);
nuts2:
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_sock_func, PL_op_desc[PL_op->op_type]);
#endif
}
/* Stat calls. */
PP(pp_stat)
{
dVAR;
dSP;
GV *gv;
I32 gimme;
I32 max = 13;
if (PL_op->op_flags & OPf_REF) {
gv = cGVOP_gv;
if (PL_op->op_type == OP_LSTAT) {
if (gv != PL_defgv) {
do_fstat_warning_check:
if (ckWARN(WARN_IO))
Perl_warner(aTHX_ packWARN(WARN_IO),
"lstat() on filehandle %s", GvENAME(gv));
} else if (PL_laststype != OP_LSTAT)
Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
}
do_fstat:
if (gv != PL_defgv) {
PL_laststype = OP_STAT;
PL_statgv = gv;
sv_setpvn(PL_statname, "", 0);
PL_laststatval = (GvIO(gv) && IoIFP(GvIOp(gv))
? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
}
if (PL_laststatval < 0) {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, GvIO(gv), PL_op->op_type);
max = 0;
}
}
else {
SV* const sv = POPs;
if (SvTYPE(sv) == SVt_PVGV) {
gv = (GV*)sv;
goto do_fstat;
}
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
gv = (GV*)SvRV(sv);
if (PL_op->op_type == OP_LSTAT)
goto do_fstat_warning_check;
goto do_fstat;
}
sv_setpv(PL_statname, SvPV_nolen_const(sv));
PL_statgv = Nullgv;
PL_laststype = PL_op->op_type;
if (PL_op->op_type == OP_LSTAT)
PL_laststatval = PerlLIO_lstat(SvPV_nolen_const(PL_statname), &PL_statcache);
else
PL_laststatval = PerlLIO_stat(SvPV_nolen_const(PL_statname), &PL_statcache);
if (PL_laststatval < 0) {
if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname), '\n'))
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "stat");
max = 0;
}
}
gimme = GIMME_V;
if (gimme != G_ARRAY) {
if (gimme != G_VOID)
XPUSHs(boolSV(max));
RETURN;
}
if (max) {
EXTEND(SP, max);
EXTEND_MORTAL(max);
PUSHs(sv_2mortal(newSViv(PL_statcache.st_dev)));
PUSHs(sv_2mortal(newSViv(PL_statcache.st_ino)));
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_mode)));
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_nlink)));
#if Uid_t_size > IVSIZE
PUSHs(sv_2mortal(newSVnv(PL_statcache.st_uid)));
#else
# if Uid_t_sign <= 0
PUSHs(sv_2mortal(newSViv(PL_statcache.st_uid)));
# else
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_uid)));
# endif
#endif
#if Gid_t_size > IVSIZE
PUSHs(sv_2mortal(newSVnv(PL_statcache.st_gid)));
#else
# if Gid_t_sign <= 0
PUSHs(sv_2mortal(newSViv(PL_statcache.st_gid)));
# else
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_gid)));
# endif
#endif
#ifdef USE_STAT_RDEV
PUSHs(sv_2mortal(newSViv(PL_statcache.st_rdev)));
#else
PUSHs(sv_2mortal(newSVpvs("")));
#endif
#if Off_t_size > IVSIZE
PUSHs(sv_2mortal(newSVnv((NV)PL_statcache.st_size)));
#else
PUSHs(sv_2mortal(newSViv(PL_statcache.st_size)));
#endif
#ifdef BIG_TIME
PUSHs(sv_2mortal(newSVnv(PL_statcache.st_atime)));
PUSHs(sv_2mortal(newSVnv(PL_statcache.st_mtime)));
PUSHs(sv_2mortal(newSVnv(PL_statcache.st_ctime)));
#else
PUSHs(sv_2mortal(newSViv(PL_statcache.st_atime)));
PUSHs(sv_2mortal(newSViv(PL_statcache.st_mtime)));
PUSHs(sv_2mortal(newSViv(PL_statcache.st_ctime)));
#endif
#ifdef USE_STAT_BLOCKS
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blksize)));
PUSHs(sv_2mortal(newSVuv(PL_statcache.st_blocks)));
#else
PUSHs(sv_2mortal(newSVpvs("")));
PUSHs(sv_2mortal(newSVpvs("")));
#endif
}
RETURN;
}
/* This macro is used by the stacked filetest operators :
* if the previous filetest failed, short-circuit and pass its value.
* Else, discard it from the stack and continue. --rgs
*/
#define STACKED_FTEST_CHECK if (PL_op->op_private & OPpFT_STACKED) { \
if (TOPs == &PL_sv_no || TOPs == &PL_sv_undef) { RETURN; } \
else { (void)POPs; PUTBACK; } \
}
PP(pp_ftrread)
{
dVAR;
I32 result;
/* Not const, because things tweak this below. Not bool, because there's
no guarantee that OPp_FT_ACCESS is <= CHAR_MAX */
#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
I32 use_access = PL_op->op_private & OPpFT_ACCESS;
/* Giving some sort of initial value silences compilers. */
# ifdef R_OK
int access_mode = R_OK;
# else
int access_mode = 0;
# endif
#else
/* access_mode is never used, but leaving use_access in makes the
conditional compiling below much clearer. */
I32 use_access = 0;
#endif
int stat_mode = S_IRUSR;
bool effective = FALSE;
dSP;
STACKED_FTEST_CHECK;
switch (PL_op->op_type) {
case OP_FTRREAD:
#if !(defined(HAS_ACCESS) && defined(R_OK))
use_access = 0;
#endif
break;
case OP_FTRWRITE:
#if defined(HAS_ACCESS) && defined(W_OK)
access_mode = W_OK;
#else
use_access = 0;
#endif
stat_mode = S_IWUSR;
break;
case OP_FTREXEC:
#if defined(HAS_ACCESS) && defined(X_OK)
access_mode = X_OK;
#else
use_access = 0;
#endif
stat_mode = S_IXUSR;
break;
case OP_FTEWRITE:
#ifdef PERL_EFF_ACCESS
access_mode = W_OK;
#endif
stat_mode = S_IWUSR;
/* Fall through */
case OP_FTEREAD:
#ifndef PERL_EFF_ACCESS
use_access = 0;
#endif
effective = TRUE;
break;
case OP_FTEEXEC:
#ifdef PERL_EFF_ACCESS
access_mode = W_OK;
#else
use_access = 0;
#endif
stat_mode = S_IXUSR;
effective = TRUE;
break;
}
if (use_access) {
#if defined(HAS_ACCESS) || defined (PERL_EFF_ACCESS)
const char *const name = POPpx;
if (effective) {
# ifdef PERL_EFF_ACCESS
result = PERL_EFF_ACCESS(name, access_mode);
# else
DIE(aTHX_ "panic: attempt to call PERL_EFF_ACCESS in %s",
OP_NAME(PL_op));
# endif
}
else {
# ifdef HAS_ACCESS
result = access(name, access_mode);
# else
DIE(aTHX_ "panic: attempt to call access() in %s", OP_NAME(PL_op));
# endif
}
if (result == 0)
RETPUSHYES;
if (result < 0)
RETPUSHUNDEF;
RETPUSHNO;
#endif
}
result = my_stat();
SPAGAIN;
if (result < 0)
RETPUSHUNDEF;
if (cando(stat_mode, effective, &PL_statcache))
RETPUSHYES;
RETPUSHNO;
}
PP(pp_ftis)
{
dVAR;
I32 result;
const int op_type = PL_op->op_type;
dSP;
STACKED_FTEST_CHECK;
result = my_stat();
SPAGAIN;
if (result < 0)
RETPUSHUNDEF;
if (op_type == OP_FTIS)
RETPUSHYES;
{
/* You can't dTARGET inside OP_FTIS, because you'll get
"panic: pad_sv po" - the op is not flagged to have a target. */
dTARGET;
switch (op_type) {
case OP_FTSIZE:
#if Off_t_size > IVSIZE
PUSHn(PL_statcache.st_size);
#else
PUSHi(PL_statcache.st_size);
#endif
break;
case OP_FTMTIME:
PUSHn( (((NV)PL_basetime - PL_statcache.st_mtime)) / 86400.0 );
break;
case OP_FTATIME:
PUSHn( (((NV)PL_basetime - PL_statcache.st_atime)) / 86400.0 );
break;
case OP_FTCTIME:
PUSHn( (((NV)PL_basetime - PL_statcache.st_ctime)) / 86400.0 );
break;
}
}
RETURN;
}
PP(pp_ftrowned)
{
dVAR;
I32 result;
dSP;
/* I believe that all these three are likely to be defined on most every
system these days. */
#ifndef S_ISUID
if(PL_op->op_type == OP_FTSUID)
RETPUSHNO;
#endif
#ifndef S_ISGID
if(PL_op->op_type == OP_FTSGID)
RETPUSHNO;
#endif
#ifndef S_ISVTX
if(PL_op->op_type == OP_FTSVTX)
RETPUSHNO;
#endif
STACKED_FTEST_CHECK;
result = my_stat();
SPAGAIN;
if (result < 0)
RETPUSHUNDEF;
switch (PL_op->op_type) {
case OP_FTROWNED:
if (PL_statcache.st_uid == PL_uid)
RETPUSHYES;
break;
case OP_FTEOWNED:
if (PL_statcache.st_uid == PL_euid)
RETPUSHYES;
break;
case OP_FTZERO:
if (PL_statcache.st_size == 0)
RETPUSHYES;
break;
case OP_FTSOCK:
if (S_ISSOCK(PL_statcache.st_mode))
RETPUSHYES;
break;
case OP_FTCHR:
if (S_ISCHR(PL_statcache.st_mode))
RETPUSHYES;
break;
case OP_FTBLK:
if (S_ISBLK(PL_statcache.st_mode))
RETPUSHYES;
break;
case OP_FTFILE:
if (S_ISREG(PL_statcache.st_mode))
RETPUSHYES;
break;
case OP_FTDIR:
if (S_ISDIR(PL_statcache.st_mode))
RETPUSHYES;
break;
case OP_FTPIPE:
if (S_ISFIFO(PL_statcache.st_mode))
RETPUSHYES;
break;
#ifdef S_ISUID
case OP_FTSUID:
if (PL_statcache.st_mode & S_ISUID)
RETPUSHYES;
break;
#endif
#ifdef S_ISGID
case OP_FTSGID:
if (PL_statcache.st_mode & S_ISGID)
RETPUSHYES;
break;
#endif
#ifdef S_ISVTX
case OP_FTSVTX:
if (PL_statcache.st_mode & S_ISVTX)
RETPUSHYES;
break;
#endif
}
RETPUSHNO;
}
PP(pp_ftlink)
{
dVAR;
I32 result = my_lstat();
dSP;
if (result < 0)
RETPUSHUNDEF;
if (S_ISLNK(PL_statcache.st_mode))
RETPUSHYES;
RETPUSHNO;
}
PP(pp_fttty)
{
dVAR;
dSP;
int fd;
GV *gv;
SV *tmpsv = Nullsv;
STACKED_FTEST_CHECK;
if (PL_op->op_flags & OPf_REF)
gv = cGVOP_gv;
else if (isGV(TOPs))
gv = (GV*)POPs;
else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
gv = (GV*)SvRV(POPs);
else
gv = gv_fetchsv(tmpsv = POPs, 0, SVt_PVIO);
if (GvIO(gv) && IoIFP(GvIOp(gv)))
fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
else if (tmpsv && SvOK(tmpsv)) {
const char *tmps = SvPV_nolen_const(tmpsv);
if (isDIGIT(*tmps))
fd = atoi(tmps);
else
RETPUSHUNDEF;
}
else
RETPUSHUNDEF;
if (PerlLIO_isatty(fd))
RETPUSHYES;
RETPUSHNO;
}
#if defined(atarist) /* this will work with atariST. Configure will
make guesses for other systems. */
# define FILE_base(f) ((f)->_base)
# define FILE_ptr(f) ((f)->_ptr)
# define FILE_cnt(f) ((f)->_cnt)
# define FILE_bufsiz(f) ((f)->_cnt + ((f)->_ptr - (f)->_base))
#endif
PP(pp_fttext)
{
dVAR;
dSP;
I32 i;
I32 len;
I32 odd = 0;
STDCHAR tbuf[512];
register STDCHAR *s;
register IO *io;
register SV *sv;
GV *gv;
PerlIO *fp;
STACKED_FTEST_CHECK;
if (PL_op->op_flags & OPf_REF)
gv = cGVOP_gv;
else if (isGV(TOPs))
gv = (GV*)POPs;
else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
gv = (GV*)SvRV(POPs);
else
gv = Nullgv;
if (gv) {
EXTEND(SP, 1);
if (gv == PL_defgv) {
if (PL_statgv)
io = GvIO(PL_statgv);
else {
sv = PL_statname;
goto really_filename;
}
}
else {
PL_statgv = gv;
PL_laststatval = -1;
sv_setpvn(PL_statname, "", 0);
io = GvIO(PL_statgv);
}
if (io && IoIFP(io)) {
if (! PerlIO_has_base(IoIFP(io)))
DIE(aTHX_ "-T and -B not implemented on filehandles");
PL_laststatval = PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
if (PL_laststatval < 0)
RETPUSHUNDEF;
if (S_ISDIR(PL_statcache.st_mode)) { /* handle NFS glitch */
if (PL_op->op_type == OP_FTTEXT)
RETPUSHNO;
else
RETPUSHYES;
}
if (PerlIO_get_cnt(IoIFP(io)) <= 0) {
i = PerlIO_getc(IoIFP(io));
if (i != EOF)
(void)PerlIO_ungetc(IoIFP(io),i);
}
if (PerlIO_get_cnt(IoIFP(io)) <= 0) /* null file is anything */
RETPUSHYES;
len = PerlIO_get_bufsiz(IoIFP(io));
s = (STDCHAR *) PerlIO_get_base(IoIFP(io));
/* sfio can have large buffers - limit to 512 */
if (len > 512)
len = 512;
}
else {
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
gv = cGVOP_gv;
report_evil_fh(gv, GvIO(gv), PL_op->op_type);
}
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
}
else {
sv = POPs;
really_filename:
PL_statgv = Nullgv;
PL_laststype = OP_STAT;
sv_setpv(PL_statname, SvPV_nolen_const(sv));
if (!(fp = PerlIO_open(SvPVX_const(PL_statname), "r"))) {
if (ckWARN(WARN_NEWLINE) && strchr(SvPV_nolen_const(PL_statname),
'\n'))
Perl_warner(aTHX_ packWARN(WARN_NEWLINE), PL_warn_nl, "open");
RETPUSHUNDEF;
}
PL_laststatval = PerlLIO_fstat(PerlIO_fileno(fp), &PL_statcache);
if (PL_laststatval < 0) {
(void)PerlIO_close(fp);
RETPUSHUNDEF;
}
PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
len = PerlIO_read(fp, tbuf, sizeof(tbuf));
(void)PerlIO_close(fp);
if (len <= 0) {
if (S_ISDIR(PL_statcache.st_mode) && PL_op->op_type == OP_FTTEXT)
RETPUSHNO; /* special case NFS directories */
RETPUSHYES; /* null file is anything */
}
s = tbuf;
}
/* now scan s to look for textiness */
/* XXX ASCII dependent code */
#if defined(DOSISH) || defined(USEMYBINMODE)
/* ignore trailing ^Z on short files */
if (len && len < sizeof(tbuf) && tbuf[len-1] == 26)
--len;
#endif
for (i = 0; i < len; i++, s++) {
if (!*s) { /* null never allowed in text */
odd += len;
break;
}
#ifdef EBCDIC
else if (!(isPRINT(*s) || isSPACE(*s)))
odd++;
#else
else if (*s & 128) {
#ifdef USE_LOCALE
if (IN_LOCALE_RUNTIME && isALPHA_LC(*s))
continue;
#endif
/* utf8 characters don't count as odd */
if (UTF8_IS_START(*s)) {
int ulen = UTF8SKIP(s);
if (ulen < len - i) {
int j;
for (j = 1; j < ulen; j++) {
if (!UTF8_IS_CONTINUATION(s[j]))
goto not_utf8;
}
--ulen; /* loop does extra increment */
s += ulen;
i += ulen;
continue;
}
}
not_utf8:
odd++;
}
else if (*s < 32 &&
*s != '\n' && *s != '\r' && *s != '\b' &&
*s != '\t' && *s != '\f' && *s != 27)
odd++;
#endif
}
if ((odd * 3 > len) == (PL_op->op_type == OP_FTTEXT)) /* allow 1/3 odd */
RETPUSHNO;
else
RETPUSHYES;
}
/* File calls. */
PP(pp_chdir)
{
dVAR; dSP; dTARGET;
const char *tmps = NULL;
GV *gv = NULL;
if( MAXARG == 1 ) {
SV * const sv = POPs;
if (SvTYPE(sv) == SVt_PVGV) {
gv = (GV*)sv;
}
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVGV) {
gv = (GV*)SvRV(sv);
}
else {
tmps = SvPVx_nolen_const(sv);
}
}
if( !gv && (!tmps || !*tmps) ) {
HV * const table = GvHVn(PL_envgv);
SV **svp;
if ( (svp = hv_fetchs(table, "HOME", FALSE))
|| (svp = hv_fetchs(table, "LOGDIR", FALSE))
#ifdef VMS
|| (svp = hv_fetchs(table, "SYS$LOGIN", FALSE))
#endif
)
{
if( MAXARG == 1 )
deprecate("chdir('') or chdir(undef) as chdir()");
tmps = SvPV_nolen_const(*svp);
}
else {
PUSHi(0);
TAINT_PROPER("chdir");
RETURN;
}
}
TAINT_PROPER("chdir");
if (gv) {
#ifdef HAS_FCHDIR
IO* const io = GvIO(gv);
if (io) {
if (IoIFP(io)) {
PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
}
else if (IoDIRP(io)) {
#ifdef HAS_DIRFD
PUSHi(fchdir(dirfd(IoDIRP(io))) >= 0);
#else
DIE(aTHX_ PL_no_func, "dirfd");
#endif
}
else {
PUSHi(0);
}
}
else {
PUSHi(0);
}
#else
DIE(aTHX_ PL_no_func, "fchdir");
#endif
}
else
PUSHi( PerlDir_chdir(tmps) >= 0 );
#ifdef VMS
/* Clear the DEFAULT element of ENV so we'll get the new value
* in the future. */
hv_delete(GvHVn(PL_envgv),"DEFAULT",7,G_DISCARD);
#endif
RETURN;
}
PP(pp_chown)
{
dVAR; dSP; dMARK; dTARGET;
const I32 value = (I32)apply(PL_op->op_type, MARK, SP);
SP = MARK;
XPUSHi(value);
RETURN;
}
PP(pp_chroot)
{
#ifdef HAS_CHROOT
dVAR; dSP; dTARGET;
char * const tmps = POPpx;
TAINT_PROPER("chroot");
PUSHi( chroot(tmps) >= 0 );
RETURN;
#else
DIE(aTHX_ PL_no_func, "chroot");
#endif
}
PP(pp_rename)
{
dVAR; dSP; dTARGET;
int anum;
const char * const tmps2 = POPpconstx;
const char * const tmps = SvPV_nolen_const(TOPs);
TAINT_PROPER("rename");
#ifdef HAS_RENAME
anum = PerlLIO_rename(tmps, tmps2);
#else
if (!(anum = PerlLIO_stat(tmps, &PL_statbuf))) {
if (same_dirent(tmps2, tmps)) /* can always rename to same name */
anum = 1;
else {
if (PL_euid || PerlLIO_stat(tmps2, &PL_statbuf) < 0 || !S_ISDIR(PL_statbuf.st_mode))
(void)UNLINK(tmps2);
if (!(anum = link(tmps, tmps2)))
anum = UNLINK(tmps);
}
}
#endif
SETi( anum >= 0 );
RETURN;
}
#if defined(HAS_LINK) || defined(HAS_SYMLINK)
PP(pp_link)
{
dVAR; dSP; dTARGET;
const int op_type = PL_op->op_type;
int result;
# ifndef HAS_LINK
if (op_type == OP_LINK)
DIE(aTHX_ PL_no_func, "link");
# endif
# ifndef HAS_SYMLINK
if (op_type == OP_SYMLINK)
DIE(aTHX_ PL_no_func, "symlink");
# endif
{
const char * const tmps2 = POPpconstx;
const char * const tmps = SvPV_nolen_const(TOPs);
TAINT_PROPER(PL_op_desc[op_type]);
result =
# if defined(HAS_LINK)
# if defined(HAS_SYMLINK)
/* Both present - need to choose which. */
(op_type == OP_LINK) ?
PerlLIO_link(tmps, tmps2) : symlink(tmps, tmps2);
# else
/* Only have link, so calls to pp_symlink will have DIE()d above. */
PerlLIO_link(tmps, tmps2);
# endif
# else
# if defined(HAS_SYMLINK)
/* Only have symlink, so calls to pp_link will have DIE()d above. */
symlink(tmps, tmps2);
# endif
# endif
}
SETi( result >= 0 );
RETURN;
}
#else
PP(pp_link)
{
/* Have neither. */
DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
}
#endif
PP(pp_readlink)
{
dVAR;
dSP;
#ifdef HAS_SYMLINK
dTARGET;
const char *tmps;
char buf[MAXPATHLEN];
int len;
#ifndef INCOMPLETE_TAINTS
TAINT;
#endif
tmps = POPpconstx;
len = readlink(tmps, buf, sizeof(buf) - 1);
EXTEND(SP, 1);
if (len < 0)
RETPUSHUNDEF;
PUSHp(buf, len);
RETURN;
#else
EXTEND(SP, 1);
RETSETUNDEF; /* just pretend it's a normal file */
#endif
}
#if !defined(HAS_MKDIR) || !defined(HAS_RMDIR)
STATIC int
S_dooneliner(pTHX_ const char *cmd, const char *filename)
{
char * const save_filename = filename;
char *cmdline;
char *s;
PerlIO *myfp;
int anum = 1;
Newx(cmdline, strlen(cmd) + (strlen(filename) * 2) + 10, char);
strcpy(cmdline, cmd);
strcat(cmdline, " ");
for (s = cmdline + strlen(cmdline); *filename; ) {
*s++ = '\\';
*s++ = *filename++;
}
strcpy(s, " 2>&1");
myfp = PerlProc_popen(cmdline, "r");
Safefree(cmdline);
if (myfp) {
SV * const tmpsv = sv_newmortal();
/* Need to save/restore 'PL_rs' ?? */
s = sv_gets(tmpsv, myfp, 0);
(void)PerlProc_pclose(myfp);
if (s != Nullch) {
int e;
for (e = 1;
#ifdef HAS_SYS_ERRLIST
e <= sys_nerr
#endif
; e++)
{
/* you don't see this */
const char * const errmsg =
#ifdef HAS_SYS_ERRLIST
sys_errlist[e]
#else
strerror(e)
#endif
;
if (!errmsg)
break;
if (instr(s, errmsg)) {
SETERRNO(e,0);
return 0;
}
}
SETERRNO(0,0);
#ifndef EACCES
#define EACCES EPERM
#endif
if (instr(s, "cannot make"))
SETERRNO(EEXIST,RMS_FEX);
else if (instr(s, "existing file"))
SETERRNO(EEXIST,RMS_FEX);
else if (instr(s, "ile exists"))
SETERRNO(EEXIST,RMS_FEX);
else if (instr(s, "non-exist"))
SETERRNO(ENOENT,RMS_FNF);
else if (instr(s, "does not exist"))
SETERRNO(ENOENT,RMS_FNF);
else if (instr(s, "not empty"))
SETERRNO(EBUSY,SS_DEVOFFLINE);
else if (instr(s, "cannot access"))
SETERRNO(EACCES,RMS_PRV);
else
SETERRNO(EPERM,RMS_PRV);
return 0;
}
else { /* some mkdirs return no failure indication */
anum = (PerlLIO_stat(save_filename, &PL_statbuf) >= 0);
if (PL_op->op_type == OP_RMDIR)
anum = !anum;
if (anum)
SETERRNO(0,0);
else
SETERRNO(EACCES,RMS_PRV); /* a guess */
}
return anum;
}
else
return 0;
}
#endif
/* This macro removes trailing slashes from a directory name.
* Different operating and file systems take differently to
* trailing slashes. According to POSIX 1003.1 1996 Edition
* any number of trailing slashes should be allowed.
* Thusly we snip them away so that even non-conforming
* systems are happy.
* We should probably do this "filtering" for all
* the functions that expect (potentially) directory names:
* -d, chdir(), chmod(), chown(), chroot(), fcntl()?,
* (mkdir()), opendir(), rename(), rmdir(), stat(). --jhi */
#define TRIMSLASHES(tmps,len,copy) (tmps) = SvPV_const(TOPs, (len)); \
if ((len) > 1 && (tmps)[(len)-1] == '/') { \
do { \
(len)--; \
} while ((len) > 1 && (tmps)[(len)-1] == '/'); \
(tmps) = savepvn((tmps), (len)); \
(copy) = TRUE; \
}
PP(pp_mkdir)
{
dVAR; dSP; dTARGET;
STRLEN len;
const char *tmps;
bool copy = FALSE;
const int mode = (MAXARG > 1) ? POPi : 0777;
TRIMSLASHES(tmps,len,copy);
TAINT_PROPER("mkdir");
#ifdef HAS_MKDIR
SETi( PerlDir_mkdir(tmps, mode) >= 0 );
#else
{
int oldumask;
SETi( dooneliner("mkdir", tmps) );
oldumask = PerlLIO_umask(0);
PerlLIO_umask(oldumask);
PerlLIO_chmod(tmps, (mode & ~oldumask) & 0777);
}
#endif
if (copy)
Safefree(tmps);
RETURN;
}
PP(pp_rmdir)
{
dVAR; dSP; dTARGET;
STRLEN len;
const char *tmps;
bool copy = FALSE;
TRIMSLASHES(tmps,len,copy);
TAINT_PROPER("rmdir");
#ifdef HAS_RMDIR
SETi( PerlDir_rmdir(tmps) >= 0 );
#else
SETi( dooneliner("rmdir", tmps) );
#endif
if (copy)
Safefree(tmps);
RETURN;
}
/* Directory calls. */
PP(pp_open_dir)
{
#if defined(Direntry_t) && defined(HAS_READDIR)
dVAR; dSP;
const char * const dirname = POPpconstx;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io)
goto nope;
if (IoDIRP(io))
PerlDir_close(IoDIRP(io));
if (!(IoDIRP(io) = PerlDir_open(dirname)))
goto nope;
RETPUSHYES;
nope:
if (!errno)
SETERRNO(EBADF,RMS_DIR);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_dir_func, "opendir");
#endif
}
PP(pp_readdir)
{
#if !defined(Direntry_t) || !defined(HAS_READDIR)
DIE(aTHX_ PL_no_dir_func, "readdir");
#else
#if !defined(I_DIRENT) && !defined(VMS)
Direntry_t *readdir (DIR *);
#endif
dVAR;
dSP;
SV *sv;
const I32 gimme = GIMME;
GV * const gv = (GV *)POPs;
register const Direntry_t *dp;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
if(ckWARN(WARN_IO)) {
Perl_warner(aTHX_ packWARN(WARN_IO),
"readdir() attempted on invalid dirhandle %s", GvENAME(gv));
}
goto nope;
}
do {
dp = (Direntry_t *)PerlDir_read(IoDIRP(io));
if (!dp)
break;
#ifdef DIRNAMLEN
sv = newSVpvn(dp->d_name, dp->d_namlen);
#else
sv = newSVpv(dp->d_name, 0);
#endif
#ifndef INCOMPLETE_TAINTS
if (!(IoFLAGS(io) & IOf_UNTAINT))
SvTAINTED_on(sv);
#endif
XPUSHs(sv_2mortal(sv));
}
while (gimme == G_ARRAY);
if (!dp && gimme != G_ARRAY)
goto nope;
RETURN;
nope:
if (!errno)
SETERRNO(EBADF,RMS_ISI);
if (GIMME == G_ARRAY)
RETURN;
else
RETPUSHUNDEF;
#endif
}
PP(pp_telldir)
{
#if defined(HAS_TELLDIR) || defined(telldir)
dVAR; dSP; dTARGET;
/* XXX does _anyone_ need this? --AD 2/20/1998 */
/* XXX netbsd still seemed to.
XXX HAS_TELLDIR_PROTO is new style, NEED_TELLDIR_PROTO is old style.
--JHI 1999-Feb-02 */
# if !defined(HAS_TELLDIR_PROTO) || defined(NEED_TELLDIR_PROTO)
long telldir (DIR *);
# endif
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
if(ckWARN(WARN_IO)) {
Perl_warner(aTHX_ packWARN(WARN_IO),
"telldir() attempted on invalid dirhandle %s", GvENAME(gv));
}
goto nope;
}
PUSHi( PerlDir_tell(IoDIRP(io)) );
RETURN;
nope:
if (!errno)
SETERRNO(EBADF,RMS_ISI);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_dir_func, "telldir");
#endif
}
PP(pp_seekdir)
{
#if defined(HAS_SEEKDIR) || defined(seekdir)
dVAR; dSP;
const long along = POPl;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
if(ckWARN(WARN_IO)) {
Perl_warner(aTHX_ packWARN(WARN_IO),
"seekdir() attempted on invalid dirhandle %s", GvENAME(gv));
}
goto nope;
}
(void)PerlDir_seek(IoDIRP(io), along);
RETPUSHYES;
nope:
if (!errno)
SETERRNO(EBADF,RMS_ISI);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_dir_func, "seekdir");
#endif
}
PP(pp_rewinddir)
{
#if defined(HAS_REWINDDIR) || defined(rewinddir)
dVAR; dSP;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
if(ckWARN(WARN_IO)) {
Perl_warner(aTHX_ packWARN(WARN_IO),
"rewinddir() attempted on invalid dirhandle %s", GvENAME(gv));
}
goto nope;
}
(void)PerlDir_rewind(IoDIRP(io));
RETPUSHYES;
nope:
if (!errno)
SETERRNO(EBADF,RMS_ISI);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_dir_func, "rewinddir");
#endif
}
PP(pp_closedir)
{
#if defined(Direntry_t) && defined(HAS_READDIR)
dVAR; dSP;
GV * const gv = (GV*)POPs;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
if(ckWARN(WARN_IO)) {
Perl_warner(aTHX_ packWARN(WARN_IO),
"closedir() attempted on invalid dirhandle %s", GvENAME(gv));
}
goto nope;
}
#ifdef VOID_CLOSEDIR
PerlDir_close(IoDIRP(io));
#else
if (PerlDir_close(IoDIRP(io)) < 0) {
IoDIRP(io) = 0; /* Don't try to close again--coredumps on SysV */
goto nope;
}
#endif
IoDIRP(io) = 0;
RETPUSHYES;
nope:
if (!errno)
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
#else
DIE(aTHX_ PL_no_dir_func, "closedir");
#endif
}
/* Process control. */
PP(pp_fork)
{
#ifdef HAS_FORK
dVAR; dSP; dTARGET;
Pid_t childpid;
EXTEND(SP, 1);
PERL_FLUSHALL_FOR_CHILD;
childpid = PerlProc_fork();
if (childpid < 0)
RETSETUNDEF;
if (!childpid) {
GV * const tmpgv = gv_fetchpv("$", GV_ADD, SVt_PV);
if (tmpgv) {
SvREADONLY_off(GvSV(tmpgv));
sv_setiv(GvSV(tmpgv), (IV)PerlProc_getpid());
SvREADONLY_on(GvSV(tmpgv));
}
#ifdef THREADS_HAVE_PIDS
PL_ppid = (IV)getppid();
#endif
#ifdef PERL_USES_PL_PIDSTATUS
hv_clear(PL_pidstatus); /* no kids, so don't wait for 'em */
#endif
}
PUSHi(childpid);
RETURN;
#else
# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
dSP; dTARGET;
Pid_t childpid;
EXTEND(SP, 1);
PERL_FLUSHALL_FOR_CHILD;
childpid = PerlProc_fork();
if (childpid == -1)
RETSETUNDEF;
PUSHi(childpid);
RETURN;
# else
DIE(aTHX_ PL_no_func, "fork");
# endif
#endif
}
PP(pp_wait)
{
#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
dVAR; dSP; dTARGET;
Pid_t childpid;
int argflags;
if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
childpid = wait4pid(-1, &argflags, 0);
else {
while ((childpid = wait4pid(-1, &argflags, 0)) == -1 &&
errno == EINTR) {
PERL_ASYNC_CHECK();
}
}
# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
/* 0 and -1 are both error returns (the former applies to WNOHANG case) */
STATUS_NATIVE_CHILD_SET((childpid && childpid != -1) ? argflags : -1);
# else
STATUS_NATIVE_CHILD_SET((childpid > 0) ? argflags : -1);
# endif
XPUSHi(childpid);
RETURN;
#else
DIE(aTHX_ PL_no_func, "wait");
#endif
}
PP(pp_waitpid)
{
#if (!defined(DOSISH) || defined(OS2) || defined(WIN32)) && !defined(MACOS_TRADITIONAL)
dVAR; dSP; dTARGET;
const int optype = POPi;
const Pid_t pid = TOPi;
Pid_t result;
int argflags;
if (PL_signals & PERL_SIGNALS_UNSAFE_FLAG)
result = wait4pid(pid, &argflags, optype);
else {
while ((result = wait4pid(pid, &argflags, optype)) == -1 &&
errno == EINTR) {
PERL_ASYNC_CHECK();
}
}
# if defined(USE_ITHREADS) && defined(PERL_IMPLICIT_SYS)
/* 0 and -1 are both error returns (the former applies to WNOHANG case) */
STATUS_NATIVE_CHILD_SET((result && result != -1) ? argflags : -1);
# else
STATUS_NATIVE_CHILD_SET((result > 0) ? argflags : -1);
# endif
SETi(result);
RETURN;
#else
DIE(aTHX_ PL_no_func, "waitpid");
#endif
}
PP(pp_system)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
I32 value;
int result;
if (PL_tainting) {
TAINT_ENV();
while (++MARK <= SP) {
(void)SvPV_nolen_const(*MARK); /* stringify for taint check */
if (PL_tainted)
break;
}
MARK = ORIGMARK;
TAINT_PROPER("system");
}
PERL_FLUSHALL_FOR_CHILD;
#if (defined(HAS_FORK) || defined(AMIGAOS)) && !defined(VMS) && !defined(OS2) || defined(PERL_MICRO)
{
Pid_t childpid;
int pp[2];
I32 did_pipes = 0;
if (PerlProc_pipe(pp) >= 0)
did_pipes = 1;
while ((childpid = PerlProc_fork()) == -1) {
if (errno != EAGAIN) {
value = -1;
SP = ORIGMARK;
XPUSHi(value);
if (did_pipes) {
PerlLIO_close(pp[0]);
PerlLIO_close(pp[1]);
}
RETURN;
}
sleep(5);
}
if (childpid > 0) {
Sigsave_t ihand,qhand; /* place to save signals during system() */
int status;
if (did_pipes)
PerlLIO_close(pp[1]);
#ifndef PERL_MICRO
rsignal_save(SIGINT, (Sighandler_t) SIG_IGN, &ihand);
rsignal_save(SIGQUIT, (Sighandler_t) SIG_IGN, &qhand);
#endif
do {
result = wait4pid(childpid, &status, 0);
} while (result == -1 && errno == EINTR);
#ifndef PERL_MICRO
(void)rsignal_restore(SIGINT, &ihand);
(void)rsignal_restore(SIGQUIT, &qhand);
#endif
STATUS_NATIVE_CHILD_SET(result == -1 ? -1 : status);
do_execfree(); /* free any memory child malloced on fork */
SP = ORIGMARK;
if (did_pipes) {
int errkid;
int n = 0, n1;
while (n < sizeof(int)) {
n1 = PerlLIO_read(pp[0],
(void*)(((char*)&errkid)+n),
(sizeof(int)) - n);
if (n1 <= 0)
break;
n += n1;
}
PerlLIO_close(pp[0]);
if (n) { /* Error */
if (n != sizeof(int))
DIE(aTHX_ "panic: kid popen errno read");
errno = errkid; /* Propagate errno from kid */
STATUS_NATIVE_CHILD_SET(-1);
}
}
XPUSHi(STATUS_CURRENT);
RETURN;
}
if (did_pipes) {
PerlLIO_close(pp[0]);
#if defined(HAS_FCNTL) && defined(F_SETFD)
fcntl(pp[1], F_SETFD, FD_CLOEXEC);
#endif
}
if (PL_op->op_flags & OPf_STACKED) {
SV * const really = *++MARK;
value = (I32)do_aexec5(really, MARK, SP, pp[1], did_pipes);
}
else if (SP - MARK != 1)
value = (I32)do_aexec5(Nullsv, MARK, SP, pp[1], did_pipes);
else {
value = (I32)do_exec3(SvPVx_nolen(sv_mortalcopy(*SP)), pp[1], did_pipes);
}
PerlProc__exit(-1);
}
#else /* ! FORK or VMS or OS/2 */
PL_statusvalue = 0;
result = 0;
if (PL_op->op_flags & OPf_STACKED) {
SV * const really = *++MARK;
# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
value = (I32)do_aspawn(really, MARK, SP);
# else
value = (I32)do_aspawn(really, (void **)MARK, (void **)SP);
# endif
}
else if (SP - MARK != 1) {
# if defined(WIN32) || defined(OS2) || defined(__SYMBIAN32__)
value = (I32)do_aspawn(Nullsv, MARK, SP);
# else
value = (I32)do_aspawn(Nullsv, (void **)MARK, (void **)SP);
# endif
}
else {
value = (I32)do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
}
if (PL_statusvalue == -1) /* hint that value must be returned as is */
result = 1;
STATUS_NATIVE_CHILD_SET(value);
do_execfree();
SP = ORIGMARK;
XPUSHi(result ? value : STATUS_CURRENT);
#endif /* !FORK or VMS */
RETURN;
}
PP(pp_exec)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
I32 value;
if (PL_tainting) {
TAINT_ENV();
while (++MARK <= SP) {
(void)SvPV_nolen_const(*MARK); /* stringify for taint check */
if (PL_tainted)
break;
}
MARK = ORIGMARK;
TAINT_PROPER("exec");
}
PERL_FLUSHALL_FOR_CHILD;
if (PL_op->op_flags & OPf_STACKED) {
SV * const really = *++MARK;
value = (I32)do_aexec(really, MARK, SP);
}
else if (SP - MARK != 1)
#ifdef VMS
value = (I32)vms_do_aexec(Nullsv, MARK, SP);
#else
# ifdef __OPEN_VM
{
(void ) do_aspawn(Nullsv, MARK, SP);
value = 0;
}
# else
value = (I32)do_aexec(Nullsv, MARK, SP);
# endif
#endif
else {
#ifdef VMS
value = (I32)vms_do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
#else
# ifdef __OPEN_VM
(void) do_spawn(SvPVx_nolen(sv_mortalcopy(*SP)));
value = 0;
# else
value = (I32)do_exec(SvPVx_nolen(sv_mortalcopy(*SP)));
# endif
#endif
}
SP = ORIGMARK;
XPUSHi(value);
RETURN;
}
PP(pp_getppid)
{
#ifdef HAS_GETPPID
dVAR; dSP; dTARGET;
# ifdef THREADS_HAVE_PIDS
if (PL_ppid != 1 && getppid() == 1)
/* maybe the parent process has died. Refresh ppid cache */
PL_ppid = 1;
XPUSHi( PL_ppid );
# else
XPUSHi( getppid() );
# endif
RETURN;
#else
DIE(aTHX_ PL_no_func, "getppid");
#endif
}
PP(pp_getpgrp)
{
#ifdef HAS_GETPGRP
dVAR; dSP; dTARGET;
Pid_t pgrp;
const Pid_t pid = (MAXARG < 1) ? 0 : SvIVx(POPs);
#ifdef BSD_GETPGRP
pgrp = (I32)BSD_GETPGRP(pid);
#else
if (pid != 0 && pid != PerlProc_getpid())
DIE(aTHX_ "POSIX getpgrp can't take an argument");
pgrp = getpgrp();
#endif
XPUSHi(pgrp);
RETURN;
#else
DIE(aTHX_ PL_no_func, "getpgrp()");
#endif
}
PP(pp_setpgrp)
{
#ifdef HAS_SETPGRP
dVAR; dSP; dTARGET;
Pid_t pgrp;
Pid_t pid;
if (MAXARG < 2) {
pgrp = 0;
pid = 0;
}
else {
pgrp = POPi;
pid = TOPi;
}
TAINT_PROPER("setpgrp");
#ifdef BSD_SETPGRP
SETi( BSD_SETPGRP(pid, pgrp) >= 0 );
#else
if ((pgrp != 0 && pgrp != PerlProc_getpid())
|| (pid != 0 && pid != PerlProc_getpid()))
{
DIE(aTHX_ "setpgrp can't take arguments");
}
SETi( setpgrp() >= 0 );
#endif /* USE_BSDPGRP */
RETURN;
#else
DIE(aTHX_ PL_no_func, "setpgrp()");
#endif
}
PP(pp_getpriority)
{
#ifdef HAS_GETPRIORITY
dVAR; dSP; dTARGET;
const int who = POPi;
const int which = TOPi;
SETi( getpriority(which, who) );
RETURN;
#else
DIE(aTHX_ PL_no_func, "getpriority()");
#endif
}
PP(pp_setpriority)
{
#ifdef HAS_SETPRIORITY
dVAR; dSP; dTARGET;
const int niceval = POPi;
const int who = POPi;
const int which = TOPi;
TAINT_PROPER("setpriority");
SETi( setpriority(which, who, niceval) >= 0 );
RETURN;
#else
DIE(aTHX_ PL_no_func, "setpriority()");
#endif
}
/* Time calls. */
PP(pp_time)
{
dVAR; dSP; dTARGET;
#ifdef BIG_TIME
XPUSHn( time(Null(Time_t*)) );
#else
XPUSHi( time(Null(Time_t*)) );
#endif
RETURN;
}
PP(pp_tms)
{
#ifdef HAS_TIMES
dVAR;
dSP;
EXTEND(SP, 4);
#ifndef VMS
(void)PerlProc_times(&PL_timesbuf);
#else
(void)PerlProc_times((tbuffer_t *)&PL_timesbuf); /* time.h uses different name for */
/* struct tms, though same data */
/* is returned. */
#endif
PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_utime)/(NV)PL_clocktick)));
if (GIMME == G_ARRAY) {
PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_stime)/(NV)PL_clocktick)));
PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cutime)/(NV)PL_clocktick)));
PUSHs(sv_2mortal(newSVnv(((NV)PL_timesbuf.tms_cstime)/(NV)PL_clocktick)));
}
RETURN;
#else
# ifdef PERL_MICRO
dSP;
PUSHs(sv_2mortal(newSVnv((NV)0.0)));
EXTEND(SP, 4);
if (GIMME == G_ARRAY) {
PUSHs(sv_2mortal(newSVnv((NV)0.0)));
PUSHs(sv_2mortal(newSVnv((NV)0.0)));
PUSHs(sv_2mortal(newSVnv((NV)0.0)));
}
RETURN;
# else
DIE(aTHX_ "times not implemented");
# endif
#endif /* HAS_TIMES */
}
#ifdef LOCALTIME_EDGECASE_BROKEN
static struct tm *S_my_localtime (pTHX_ Time_t *tp)
{
auto time_t T;
auto struct tm *P;
/* No workarounds in the valid range */
if (!tp || *tp < 0x7fff573f || *tp >= 0x80000000)
return (localtime (tp));
/* This edge case is to workaround the undefined behaviour, where the
* TIMEZONE makes the time go beyond the defined range.
* gmtime (0x7fffffff) => 2038-01-19 03:14:07
* If there is a negative offset in TZ, like MET-1METDST, some broken
* implementations of localtime () (like AIX 5.2) barf with bogus
* return values:
* 0x7fffffff gmtime 2038-01-19 03:14:07
* 0x7fffffff localtime 1901-12-13 21:45:51
* 0x7fffffff mylocaltime 2038-01-19 04:14:07
* 0x3c19137f gmtime 2001-12-13 20:45:51
* 0x3c19137f localtime 2001-12-13 21:45:51
* 0x3c19137f mylocaltime 2001-12-13 21:45:51
* Given that legal timezones are typically between GMT-12 and GMT+12
* we turn back the clock 23 hours before calling the localtime
* function, and add those to the return value. This will never cause
* day wrapping problems, since the edge case is Tue Jan *19*
*/
T = *tp - 82800; /* 23 hour. allows up to GMT-23 */
P = localtime (&T);
P->tm_hour += 23;
if (P->tm_hour >= 24) {
P->tm_hour -= 24;
P->tm_mday++; /* 18 -> 19 */
P->tm_wday++; /* Mon -> Tue */
P->tm_yday++; /* 18 -> 19 */
}
return (P);
} /* S_my_localtime */
#endif
PP(pp_gmtime)
{
dVAR;
dSP;
Time_t when;
const struct tm *tmbuf;
static const char * const dayname[] =
{"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
static const char * const monname[] =
{"Jan", "Feb", "Mar", "Apr", "May", "Jun",
"Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
if (MAXARG < 1)
(void)time(&when);
else
#ifdef BIG_TIME
when = (Time_t)SvNVx(POPs);
#else
when = (Time_t)SvIVx(POPs);
#endif
if (PL_op->op_type == OP_LOCALTIME)
#ifdef LOCALTIME_EDGECASE_BROKEN
tmbuf = S_my_localtime(aTHX_ &when);
#else
tmbuf = localtime(&when);
#endif
else
tmbuf = gmtime(&when);
if (GIMME != G_ARRAY) {
SV *tsv;
EXTEND(SP, 1);
EXTEND_MORTAL(1);
if (!tmbuf)
RETPUSHUNDEF;
tsv = Perl_newSVpvf(aTHX_ "%s %s %2d %02d:%02d:%02d %d",
dayname[tmbuf->tm_wday],
monname[tmbuf->tm_mon],
tmbuf->tm_mday,
tmbuf->tm_hour,
tmbuf->tm_min,
tmbuf->tm_sec,
tmbuf->tm_year + 1900);
PUSHs(sv_2mortal(tsv));
}
else if (tmbuf) {
EXTEND(SP, 9);
EXTEND_MORTAL(9);
PUSHs(sv_2mortal(newSViv(tmbuf->tm_sec)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_min)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_hour)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_mday)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_mon)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_year)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_wday)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_yday)));
PUSHs(sv_2mortal(newSViv(tmbuf->tm_isdst)));
}
RETURN;
}
PP(pp_alarm)
{
#ifdef HAS_ALARM
dVAR; dSP; dTARGET;
int anum;
anum = POPi;
anum = alarm((unsigned int)anum);
EXTEND(SP, 1);
if (anum < 0)
RETPUSHUNDEF;
PUSHi(anum);
RETURN;
#else
DIE(aTHX_ PL_no_func, "alarm");
#endif
}
PP(pp_sleep)
{
dVAR; dSP; dTARGET;
I32 duration;
Time_t lasttime;
Time_t when;
(void)time(&lasttime);
if (MAXARG < 1)
PerlProc_pause();
else {
duration = POPi;
PerlProc_sleep((unsigned int)duration);
}
(void)time(&when);
XPUSHi(when - lasttime);
RETURN;
}
/* Shared memory. */
/* Merged with some message passing. */
PP(pp_shmwrite)
{
#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
dVAR; dSP; dMARK; dTARGET;
const int op_type = PL_op->op_type;
I32 value;
switch (op_type) {
case OP_MSGSND:
value = (I32)(do_msgsnd(MARK, SP) >= 0);
break;
case OP_MSGRCV:
value = (I32)(do_msgrcv(MARK, SP) >= 0);
break;
case OP_SEMOP:
value = (I32)(do_semop(MARK, SP) >= 0);
break;
default:
value = (I32)(do_shmio(op_type, MARK, SP) >= 0);
break;
}
SP = MARK;
PUSHi(value);
RETURN;
#else
return pp_semget();
#endif
}
/* Semaphores. */
PP(pp_semget)
{
#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
dVAR; dSP; dMARK; dTARGET;
const int anum = do_ipcget(PL_op->op_type, MARK, SP);
SP = MARK;
if (anum == -1)
RETPUSHUNDEF;
PUSHi(anum);
RETURN;
#else
DIE(aTHX_ "System V IPC is not implemented on this machine");
#endif
}
PP(pp_semctl)
{
#if defined(HAS_MSG) || defined(HAS_SEM) || defined(HAS_SHM)
dVAR; dSP; dMARK; dTARGET;
const int anum = do_ipcctl(PL_op->op_type, MARK, SP);
SP = MARK;
if (anum == -1)
RETSETUNDEF;
if (anum != 0) {
PUSHi(anum);
}
else {
PUSHp(zero_but_true, ZBTLEN);
}
RETURN;
#else
return pp_semget();
#endif
}
/* Get system info. */
PP(pp_ghostent)
{
#if defined(HAS_GETHOSTBYNAME) || defined(HAS_GETHOSTBYADDR) || defined(HAS_GETHOSTENT)
dVAR; dSP;
I32 which = PL_op->op_type;
register char **elem;
register SV *sv;
#ifndef HAS_GETHOST_PROTOS /* XXX Do we need individual probes? */
struct hostent *gethostbyaddr(Netdb_host_t, Netdb_hlen_t, int);
struct hostent *gethostbyname(Netdb_name_t);
struct hostent *gethostent(void);
#endif
struct hostent *hent;
unsigned long len;
EXTEND(SP, 10);
if (which == OP_GHBYNAME) {
#ifdef HAS_GETHOSTBYNAME
const char* const name = POPpbytex;
hent = PerlSock_gethostbyname(name);
#else
DIE(aTHX_ PL_no_sock_func, "gethostbyname");
#endif
}
else if (which == OP_GHBYADDR) {
#ifdef HAS_GETHOSTBYADDR
const int addrtype = POPi;
SV * const addrsv = POPs;
STRLEN addrlen;
Netdb_host_t addr = (Netdb_host_t) SvPVbyte(addrsv, addrlen);
hent = PerlSock_gethostbyaddr(addr, (Netdb_hlen_t) addrlen, addrtype);
#else
DIE(aTHX_ PL_no_sock_func, "gethostbyaddr");
#endif
}
else
#ifdef HAS_GETHOSTENT
hent = PerlSock_gethostent();
#else
DIE(aTHX_ PL_no_sock_func, "gethostent");
#endif
#ifdef HOST_NOT_FOUND
if (!hent) {
#ifdef USE_REENTRANT_API
# ifdef USE_GETHOSTENT_ERRNO
h_errno = PL_reentrant_buffer->_gethostent_errno;
# endif
#endif
STATUS_UNIX_SET(h_errno);
}
#endif
if (GIMME != G_ARRAY) {
PUSHs(sv = sv_newmortal());
if (hent) {
if (which == OP_GHBYNAME) {
if (hent->h_addr)
sv_setpvn(sv, hent->h_addr, hent->h_length);
}
else
sv_setpv(sv, (char*)hent->h_name);
}
RETURN;
}
if (hent) {
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, (char*)hent->h_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
for (elem = hent->h_aliases; elem && *elem; elem++) {
sv_catpv(sv, *elem);
if (elem[1])
sv_catpvs(sv, " ");
}
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)hent->h_addrtype);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
len = hent->h_length;
sv_setiv(sv, (IV)len);
#ifdef h_addr
for (elem = hent->h_addr_list; elem && *elem; elem++) {
XPUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpvn(sv, *elem, len);
}
#else
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
if (hent->h_addr)
sv_setpvn(sv, hent->h_addr, len);
#endif /* h_addr */
}
RETURN;
#else
DIE(aTHX_ PL_no_sock_func, "gethostent");
#endif
}
PP(pp_gnetent)
{
#if defined(HAS_GETNETBYNAME) || defined(HAS_GETNETBYADDR) || defined(HAS_GETNETENT)
dVAR; dSP;
I32 which = PL_op->op_type;
register char **elem;
register SV *sv;
#ifndef HAS_GETNET_PROTOS /* XXX Do we need individual probes? */
struct netent *getnetbyaddr(Netdb_net_t, int);
struct netent *getnetbyname(Netdb_name_t);
struct netent *getnetent(void);
#endif
struct netent *nent;
if (which == OP_GNBYNAME){
#ifdef HAS_GETNETBYNAME
const char * const name = POPpbytex;
nent = PerlSock_getnetbyname(name);
#else
DIE(aTHX_ PL_no_sock_func, "getnetbyname");
#endif
}
else if (which == OP_GNBYADDR) {
#ifdef HAS_GETNETBYADDR
const int addrtype = POPi;
const Netdb_net_t addr = (Netdb_net_t) (U32)POPu;
nent = PerlSock_getnetbyaddr(addr, addrtype);
#else
DIE(aTHX_ PL_no_sock_func, "getnetbyaddr");
#endif
}
else
#ifdef HAS_GETNETENT
nent = PerlSock_getnetent();
#else
DIE(aTHX_ PL_no_sock_func, "getnetent");
#endif
#ifdef HOST_NOT_FOUND
if (!nent) {
#ifdef USE_REENTRANT_API
# ifdef USE_GETNETENT_ERRNO
h_errno = PL_reentrant_buffer->_getnetent_errno;
# endif
#endif
STATUS_UNIX_SET(h_errno);
}
#endif
EXTEND(SP, 4);
if (GIMME != G_ARRAY) {
PUSHs(sv = sv_newmortal());
if (nent) {
if (which == OP_GNBYNAME)
sv_setiv(sv, (IV)nent->n_net);
else
sv_setpv(sv, nent->n_name);
}
RETURN;
}
if (nent) {
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, nent->n_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
for (elem = nent->n_aliases; elem && *elem; elem++) {
sv_catpv(sv, *elem);
if (elem[1])
sv_catpvs(sv, " ");
}
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)nent->n_addrtype);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)nent->n_net);
}
RETURN;
#else
DIE(aTHX_ PL_no_sock_func, "getnetent");
#endif
}
PP(pp_gprotoent)
{
#if defined(HAS_GETPROTOBYNAME) || defined(HAS_GETPROTOBYNUMBER) || defined(HAS_GETPROTOENT)
dVAR; dSP;
I32 which = PL_op->op_type;
register char **elem;
register SV *sv;
#ifndef HAS_GETPROTO_PROTOS /* XXX Do we need individual probes? */
struct protoent *getprotobyname(Netdb_name_t);
struct protoent *getprotobynumber(int);
struct protoent *getprotoent(void);
#endif
struct protoent *pent;
if (which == OP_GPBYNAME) {
#ifdef HAS_GETPROTOBYNAME
const char* const name = POPpbytex;
pent = PerlSock_getprotobyname(name);
#else
DIE(aTHX_ PL_no_sock_func, "getprotobyname");
#endif
}
else if (which == OP_GPBYNUMBER) {
#ifdef HAS_GETPROTOBYNUMBER
const int number = POPi;
pent = PerlSock_getprotobynumber(number);
#else
DIE(aTHX_ PL_no_sock_func, "getprotobynumber");
#endif
}
else
#ifdef HAS_GETPROTOENT
pent = PerlSock_getprotoent();
#else
DIE(aTHX_ PL_no_sock_func, "getprotoent");
#endif
EXTEND(SP, 3);
if (GIMME != G_ARRAY) {
PUSHs(sv = sv_newmortal());
if (pent) {
if (which == OP_GPBYNAME)
sv_setiv(sv, (IV)pent->p_proto);
else
sv_setpv(sv, pent->p_name);
}
RETURN;
}
if (pent) {
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, pent->p_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
for (elem = pent->p_aliases; elem && *elem; elem++) {
sv_catpv(sv, *elem);
if (elem[1])
sv_catpvs(sv, " ");
}
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)pent->p_proto);
}
RETURN;
#else
DIE(aTHX_ PL_no_sock_func, "getprotoent");
#endif
}
PP(pp_gservent)
{
#if defined(HAS_GETSERVBYNAME) || defined(HAS_GETSERVBYPORT) || defined(HAS_GETSERVENT)
dVAR; dSP;
I32 which = PL_op->op_type;
register char **elem;
register SV *sv;
#ifndef HAS_GETSERV_PROTOS /* XXX Do we need individual probes? */
struct servent *getservbyname(Netdb_name_t, Netdb_name_t);
struct servent *getservbyport(int, Netdb_name_t);
struct servent *getservent(void);
#endif
struct servent *sent;
if (which == OP_GSBYNAME) {
#ifdef HAS_GETSERVBYNAME
const char * const proto = POPpbytex;
const char * const name = POPpbytex;
sent = PerlSock_getservbyname(name, (proto && !*proto) ? Nullch : proto);
#else
DIE(aTHX_ PL_no_sock_func, "getservbyname");
#endif
}
else if (which == OP_GSBYPORT) {
#ifdef HAS_GETSERVBYPORT
const char * const proto = POPpbytex;
unsigned short port = (unsigned short)POPu;
#ifdef HAS_HTONS
port = PerlSock_htons(port);
#endif
sent = PerlSock_getservbyport(port, (proto && !*proto) ? Nullch : proto);
#else
DIE(aTHX_ PL_no_sock_func, "getservbyport");
#endif
}
else
#ifdef HAS_GETSERVENT
sent = PerlSock_getservent();
#else
DIE(aTHX_ PL_no_sock_func, "getservent");
#endif
EXTEND(SP, 4);
if (GIMME != G_ARRAY) {
PUSHs(sv = sv_newmortal());
if (sent) {
if (which == OP_GSBYNAME) {
#ifdef HAS_NTOHS
sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
#else
sv_setiv(sv, (IV)(sent->s_port));
#endif
}
else
sv_setpv(sv, sent->s_name);
}
RETURN;
}
if (sent) {
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, sent->s_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
for (elem = sent->s_aliases; elem && *elem; elem++) {
sv_catpv(sv, *elem);
if (elem[1])
sv_catpvs(sv, " ");
}
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
#ifdef HAS_NTOHS
sv_setiv(sv, (IV)PerlSock_ntohs(sent->s_port));
#else
sv_setiv(sv, (IV)(sent->s_port));
#endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, sent->s_proto);
}
RETURN;
#else
DIE(aTHX_ PL_no_sock_func, "getservent");
#endif
}
PP(pp_shostent)
{
#ifdef HAS_SETHOSTENT
dVAR; dSP;
PerlSock_sethostent(TOPi);
RETSETYES;
#else
DIE(aTHX_ PL_no_sock_func, "sethostent");
#endif
}
PP(pp_snetent)
{
#ifdef HAS_SETNETENT
dVAR; dSP;
PerlSock_setnetent(TOPi);
RETSETYES;
#else
DIE(aTHX_ PL_no_sock_func, "setnetent");
#endif
}
PP(pp_sprotoent)
{
#ifdef HAS_SETPROTOENT
dVAR; dSP;
PerlSock_setprotoent(TOPi);
RETSETYES;
#else
DIE(aTHX_ PL_no_sock_func, "setprotoent");
#endif
}
PP(pp_sservent)
{
#ifdef HAS_SETSERVENT
dVAR; dSP;
PerlSock_setservent(TOPi);
RETSETYES;
#else
DIE(aTHX_ PL_no_sock_func, "setservent");
#endif
}
PP(pp_ehostent)
{
#ifdef HAS_ENDHOSTENT
dVAR; dSP;
PerlSock_endhostent();
EXTEND(SP,1);
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "endhostent");
#endif
}
PP(pp_enetent)
{
#ifdef HAS_ENDNETENT
dVAR; dSP;
PerlSock_endnetent();
EXTEND(SP,1);
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "endnetent");
#endif
}
PP(pp_eprotoent)
{
#ifdef HAS_ENDPROTOENT
dVAR; dSP;
PerlSock_endprotoent();
EXTEND(SP,1);
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "endprotoent");
#endif
}
PP(pp_eservent)
{
#ifdef HAS_ENDSERVENT
dVAR; dSP;
PerlSock_endservent();
EXTEND(SP,1);
RETPUSHYES;
#else
DIE(aTHX_ PL_no_sock_func, "endservent");
#endif
}
PP(pp_gpwent)
{
#ifdef HAS_PASSWD
dVAR; dSP;
I32 which = PL_op->op_type;
register SV *sv;
struct passwd *pwent = NULL;
/*
* We currently support only the SysV getsp* shadow password interface.
* The interface is declared in <shadow.h> and often one needs to link
* with -lsecurity or some such.
* This interface is used at least by Solaris, HP-UX, IRIX, and Linux.
* (and SCO?)
*
* AIX getpwnam() is clever enough to return the encrypted password
* only if the caller (euid?) is root.
*
* There are at least three other shadow password APIs. Many platforms
* seem to contain more than one interface for accessing the shadow
* password databases, possibly for compatibility reasons.
* The getsp*() is by far he simplest one, the other two interfaces
* are much more complicated, but also very similar to each other.
*
* <sys/types.h>
* <sys/security.h>
* <prot.h>
* struct pr_passwd *getprpw*();
* The password is in
* char getprpw*(...).ufld.fd_encrypt[]
* Mention HAS_GETPRPWNAM here so that Configure probes for it.
*
* <sys/types.h>
* <sys/security.h>
* <prot.h>
* struct es_passwd *getespw*();
* The password is in
* char *(getespw*(...).ufld.fd_encrypt)
* Mention HAS_GETESPWNAM here so that Configure probes for it.
*
* <userpw.h> (AIX)
* struct userpw *getuserpw();
* The password is in
* char *(getuserpw(...)).spw_upw_passwd
* (but the de facto standard getpwnam() should work okay)
*
* Mention I_PROT here so that Configure probes for it.
*
* In HP-UX for getprpw*() the manual page claims that one should include
* <hpsecurity.h> instead of <sys/security.h>, but that is not needed
* if one includes <shadow.h> as that includes <hpsecurity.h>,
* and pp_sys.c already includes <shadow.h> if there is such.
*
* Note that <sys/security.h> is already probed for, but currently
* it is only included in special cases.
*
* In Digital UNIX/Tru64 if using the getespw*() (which seems to be
* be preferred interface, even though also the getprpw*() interface
* is available) one needs to link with -lsecurity -ldb -laud -lm.
* One also needs to call set_auth_parameters() in main() before
* doing anything else, whether one is using getespw*() or getprpw*().
*
* Note that accessing the shadow databases can be magnitudes
* slower than accessing the standard databases.
*
* --jhi
*/
# if defined(__CYGWIN__) && defined(USE_REENTRANT_API)
/* Cygwin 1.5.3-1 has buggy getpwnam_r() and getpwuid_r():
* the pw_comment is left uninitialized. */
PL_reentrant_buffer->_pwent_struct.pw_comment = NULL;
# endif
switch (which) {
case OP_GPWNAM:
{
const char* const name = POPpbytex;
pwent = getpwnam(name);
}
break;
case OP_GPWUID:
{
Uid_t uid = POPi;
pwent = getpwuid(uid);
}
break;
case OP_GPWENT:
# ifdef HAS_GETPWENT
pwent = getpwent();
#ifdef POSIX_BC /* In some cases pw_passwd has invalid addresses */
if (pwent) pwent = getpwnam(pwent->pw_name);
#endif
# else
DIE(aTHX_ PL_no_func, "getpwent");
# endif
break;
}
EXTEND(SP, 10);
if (GIMME != G_ARRAY) {
PUSHs(sv = sv_newmortal());
if (pwent) {
if (which == OP_GPWNAM)
# if Uid_t_sign <= 0
sv_setiv(sv, (IV)pwent->pw_uid);
# else
sv_setuv(sv, (UV)pwent->pw_uid);
# endif
else
sv_setpv(sv, pwent->pw_name);
}
RETURN;
}
if (pwent) {
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, pwent->pw_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
SvPOK_off(sv);
/* If we have getspnam(), we try to dig up the shadow
* password. If we are underprivileged, the shadow
* interface will set the errno to EACCES or similar,
* and return a null pointer. If this happens, we will
* use the dummy password (usually "*" or "x") from the
* standard password database.
*
* In theory we could skip the shadow call completely
* if euid != 0 but in practice we cannot know which
* security measures are guarding the shadow databases
* on a random platform.
*
* Resist the urge to use additional shadow interfaces.
* Divert the urge to writing an extension instead.
*
* --jhi */
/* Some AIX setups falsely(?) detect some getspnam(), which
* has a different API than the Solaris/IRIX one. */
# if defined(HAS_GETSPNAM) && !defined(_AIX)
{
const int saverrno = errno;
const struct spwd * const spwent = getspnam(pwent->pw_name);
/* Save and restore errno so that
* underprivileged attempts seem
* to have never made the unsccessful
* attempt to retrieve the shadow password. */
errno = saverrno;
if (spwent && spwent->sp_pwdp)
sv_setpv(sv, spwent->sp_pwdp);
}
# endif
# ifdef PWPASSWD
if (!SvPOK(sv)) /* Use the standard password, then. */
sv_setpv(sv, pwent->pw_passwd);
# endif
# ifndef INCOMPLETE_TAINTS
/* passwd is tainted because user himself can diddle with it.
* admittedly not much and in a very limited way, but nevertheless. */
SvTAINTED_on(sv);
# endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
# if Uid_t_sign <= 0
sv_setiv(sv, (IV)pwent->pw_uid);
# else
sv_setuv(sv, (UV)pwent->pw_uid);
# endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
# if Uid_t_sign <= 0
sv_setiv(sv, (IV)pwent->pw_gid);
# else
sv_setuv(sv, (UV)pwent->pw_gid);
# endif
/* pw_change, pw_quota, and pw_age are mutually exclusive--
* because of the poor interface of the Perl getpw*(),
* not because there's some standard/convention saying so.
* A better interface would have been to return a hash,
* but we are accursed by our history, alas. --jhi. */
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
# ifdef PWCHANGE
sv_setiv(sv, (IV)pwent->pw_change);
# else
# ifdef PWQUOTA
sv_setiv(sv, (IV)pwent->pw_quota);
# else
# ifdef PWAGE
sv_setpv(sv, pwent->pw_age);
# endif
# endif
# endif
/* pw_class and pw_comment are mutually exclusive--.
* see the above note for pw_change, pw_quota, and pw_age. */
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
# ifdef PWCLASS
sv_setpv(sv, pwent->pw_class);
# else
# ifdef PWCOMMENT
sv_setpv(sv, pwent->pw_comment);
# endif
# endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
# ifdef PWGECOS
sv_setpv(sv, pwent->pw_gecos);
# endif
# ifndef INCOMPLETE_TAINTS
/* pw_gecos is tainted because user himself can diddle with it. */
SvTAINTED_on(sv);
# endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, pwent->pw_dir);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, pwent->pw_shell);
# ifndef INCOMPLETE_TAINTS
/* pw_shell is tainted because user himself can diddle with it. */
SvTAINTED_on(sv);
# endif
# ifdef PWEXPIRE
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)pwent->pw_expire);
# endif
}
RETURN;
#else
DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
#endif
}
PP(pp_spwent)
{
#if defined(HAS_PASSWD) && defined(HAS_SETPWENT)
dVAR; dSP;
setpwent();
RETPUSHYES;
#else
DIE(aTHX_ PL_no_func, "setpwent");
#endif
}
PP(pp_epwent)
{
#if defined(HAS_PASSWD) && defined(HAS_ENDPWENT)
dVAR; dSP;
endpwent();
RETPUSHYES;
#else
DIE(aTHX_ PL_no_func, "endpwent");
#endif
}
PP(pp_ggrent)
{
#ifdef HAS_GROUP
dVAR; dSP;
const I32 which = PL_op->op_type;
const struct group *grent;
if (which == OP_GGRNAM) {
const char* const name = POPpbytex;
grent = (const struct group *)getgrnam(name);
}
else if (which == OP_GGRGID) {
const Gid_t gid = POPi;
grent = (const struct group *)getgrgid(gid);
}
else
#ifdef HAS_GETGRENT
grent = (struct group *)getgrent();
#else
DIE(aTHX_ PL_no_func, "getgrent");
#endif
EXTEND(SP, 4);
if (GIMME != G_ARRAY) {
SV * const sv = sv_newmortal();
PUSHs(sv);
if (grent) {
if (which == OP_GGRNAM)
sv_setiv(sv, (IV)grent->gr_gid);
else
sv_setpv(sv, grent->gr_name);
}
RETURN;
}
if (grent) {
SV *sv;
char **elem;
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setpv(sv, grent->gr_name);
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
#ifdef GRPASSWD
sv_setpv(sv, grent->gr_passwd);
#endif
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
sv_setiv(sv, (IV)grent->gr_gid);
#if !(defined(_CRAYMPP) && defined(USE_REENTRANT_API))
PUSHs(sv = sv_mortalcopy(&PL_sv_no));
/* In UNICOS/mk (_CRAYMPP) the multithreading
* versions (getgrnam_r, getgrgid_r)
* seem to return an illegal pointer
* as the group members list, gr_mem.
* getgrent() doesn't even have a _r version
* but the gr_mem is poisonous anyway.
* So yes, you cannot get the list of group
* members if building multithreaded in UNICOS/mk. */
for (elem = grent->gr_mem; elem && *elem; elem++) {
sv_catpv(sv, *elem);
if (elem[1])
sv_catpvs(sv, " ");
}
#endif
}
RETURN;
#else
DIE(aTHX_ PL_no_func, PL_op_desc[PL_op->op_type]);
#endif
}
PP(pp_sgrent)
{
#if defined(HAS_GROUP) && defined(HAS_SETGRENT)
dVAR; dSP;
setgrent();
RETPUSHYES;
#else
DIE(aTHX_ PL_no_func, "setgrent");
#endif
}
PP(pp_egrent)
{
#if defined(HAS_GROUP) && defined(HAS_ENDGRENT)
dVAR; dSP;
endgrent();
RETPUSHYES;
#else
DIE(aTHX_ PL_no_func, "endgrent");
#endif
}
PP(pp_getlogin)
{
#ifdef HAS_GETLOGIN
dVAR; dSP; dTARGET;
char *tmps;
EXTEND(SP, 1);
if (!(tmps = PerlProc_getlogin()))
RETPUSHUNDEF;
PUSHp(tmps, strlen(tmps));
RETURN;
#else
DIE(aTHX_ PL_no_func, "getlogin");
#endif
}
/* Miscellaneous. */
PP(pp_syscall)
{
#ifdef HAS_SYSCALL
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
register I32 items = SP - MARK;
unsigned long a[20];
register I32 i = 0;
I32 retval = -1;
if (PL_tainting) {
while (++MARK <= SP) {
if (SvTAINTED(*MARK)) {
TAINT;
break;
}
}
MARK = ORIGMARK;
TAINT_PROPER("syscall");
}
/* This probably won't work on machines where sizeof(long) != sizeof(int)
* or where sizeof(long) != sizeof(char*). But such machines will
* not likely have syscall implemented either, so who cares?
*/
while (++MARK <= SP) {
if (SvNIOK(*MARK) || !i)
a[i++] = SvIV(*MARK);
else if (*MARK == &PL_sv_undef)
a[i++] = 0;
else
a[i++] = (unsigned long)SvPV_force_nolen(*MARK);
if (i > 15)
break;
}
switch (items) {
default:
DIE(aTHX_ "Too many args to syscall");
case 0:
DIE(aTHX_ "Too few args to syscall");
case 1:
retval = syscall(a[0]);
break;
case 2:
retval = syscall(a[0],a[1]);
break;
case 3:
retval = syscall(a[0],a[1],a[2]);
break;
case 4:
retval = syscall(a[0],a[1],a[2],a[3]);
break;
case 5:
retval = syscall(a[0],a[1],a[2],a[3],a[4]);
break;
case 6:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5]);
break;
case 7:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6]);
break;
case 8:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7]);
break;
#ifdef atarist
case 9:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8]);
break;
case 10:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9]);
break;
case 11:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
a[10]);
break;
case 12:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
a[10],a[11]);
break;
case 13:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
a[10],a[11],a[12]);
break;
case 14:
retval = syscall(a[0],a[1],a[2],a[3],a[4],a[5],a[6],a[7],a[8],a[9],
a[10],a[11],a[12],a[13]);
break;
#endif /* atarist */
}
SP = ORIGMARK;
PUSHi(retval);
RETURN;
#else
DIE(aTHX_ PL_no_func, "syscall");
#endif
}
#ifdef FCNTL_EMULATE_FLOCK
/* XXX Emulate flock() with fcntl().
What's really needed is a good file locking module.
*/
static int
fcntl_emulate_flock(int fd, int operation)
{
struct flock flock;
switch (operation & ~LOCK_NB) {
case LOCK_SH:
flock.l_type = F_RDLCK;
break;
case LOCK_EX:
flock.l_type = F_WRLCK;
break;
case LOCK_UN:
flock.l_type = F_UNLCK;
break;
default:
errno = EINVAL;
return -1;
}
flock.l_whence = SEEK_SET;
flock.l_start = flock.l_len = (Off_t)0;
return fcntl(fd, (operation & LOCK_NB) ? F_SETLK : F_SETLKW, &flock);
}
#endif /* FCNTL_EMULATE_FLOCK */
#ifdef LOCKF_EMULATE_FLOCK
/* XXX Emulate flock() with lockf(). This is just to increase
portability of scripts. The calls are not completely
interchangeable. What's really needed is a good file
locking module.
*/
/* The lockf() constants might have been defined in <unistd.h>.
Unfortunately, <unistd.h> causes troubles on some mixed
(BSD/POSIX) systems, such as SunOS 4.1.3.
Further, the lockf() constants aren't POSIX, so they might not be
visible if we're compiling with _POSIX_SOURCE defined. Thus, we'll
just stick in the SVID values and be done with it. Sigh.
*/
# ifndef F_ULOCK
# define F_ULOCK 0 /* Unlock a previously locked region */
# endif
# ifndef F_LOCK
# define F_LOCK 1 /* Lock a region for exclusive use */
# endif
# ifndef F_TLOCK
# define F_TLOCK 2 /* Test and lock a region for exclusive use */
# endif
# ifndef F_TEST
# define F_TEST 3 /* Test a region for other processes locks */
# endif
static int
lockf_emulate_flock(int fd, int operation)
{
int i;
const int save_errno = errno;
Off_t pos;
/* flock locks entire file so for lockf we need to do the same */
pos = PerlLIO_lseek(fd, (Off_t)0, SEEK_CUR); /* get pos to restore later */
if (pos > 0) /* is seekable and needs to be repositioned */
if (PerlLIO_lseek(fd, (Off_t)0, SEEK_SET) < 0)
pos = -1; /* seek failed, so don't seek back afterwards */
errno = save_errno;
switch (operation) {
/* LOCK_SH - get a shared lock */
case LOCK_SH:
/* LOCK_EX - get an exclusive lock */
case LOCK_EX:
i = lockf (fd, F_LOCK, 0);
break;
/* LOCK_SH|LOCK_NB - get a non-blocking shared lock */
case LOCK_SH|LOCK_NB:
/* LOCK_EX|LOCK_NB - get a non-blocking exclusive lock */
case LOCK_EX|LOCK_NB:
i = lockf (fd, F_TLOCK, 0);
if (i == -1)
if ((errno == EAGAIN) || (errno == EACCES))
errno = EWOULDBLOCK;
break;
/* LOCK_UN - unlock (non-blocking is a no-op) */
case LOCK_UN:
case LOCK_UN|LOCK_NB:
i = lockf (fd, F_ULOCK, 0);
break;
/* Default - can't decipher operation */
default:
i = -1;
errno = EINVAL;
break;
}
if (pos > 0) /* need to restore position of the handle */
PerlLIO_lseek(fd, pos, SEEK_SET); /* ignore error here */
return (i);
}
#endif /* LOCKF_EMULATE_FLOCK */
/*
* Local variables:
* c-indentation-style: bsd
* c-basic-offset: 4
* indent-tabs-mode: t
* End:
*
* ex: set ts=8 sts=4 sw=4 noet:
*/