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/* pp_sys.c
*
* Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
* 2004, 2005, 2006, 2007, 2008 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.
*
* [p.945 of _The Lord of the Rings_, VI/iii: "Mount Doom"]
*/
/* 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"
#include "time64.h"
#include "time64.c"
#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 */
/* 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;
#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");
return res;
}
# define PERL_EFF_ACCESS(p,f) (S_emulate_eaccess(aTHX_ (p), (f)))
#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 = Perl_PerlIO_context_layers(aTHX_ 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)
NOOP;
}
else if (gimme == G_SCALAR) {
ENTER_with_name("backtick");
SAVESPTR(PL_rs);
PL_rs = &PL_sv_undef;
sv_setpvs(TARG, ""); /* note that this preserves previous buffer */
while (sv_gets(TARG, fp, SvCUR(TARG)) != NULL)
NOOP;
LEAVE_with_name("backtick");
XPUSHs(TARG);
SvTAINTED_on(TARG);
}
else {
for (;;) {
SV * const sv = newSV(79);
if (sv_gets(sv, fp, 0) == NULL) {
SvREFCNT_dec(sv);
break;
}
mXPUSHs(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;
dSP;
/* make a copy of the pattern, to ensure that magic is called once
* and only once */
TOPm1s = sv_2mortal(newSVsv(TOPm1s));
tryAMAGICunTARGET(iter_amg, -1, (PL_op->op_flags & OPf_SPECIAL));
if (PL_op->op_flags & OPf_SPECIAL) {
/* call Perl-level glob function instead. Stack args are:
* MARK, wildcard, csh_glob context index
* and following OPs should be: gv(CORE::GLOBAL::glob), entersub
* */
return NORMAL;
}
/* stack args are: wildcard, gv(_GEN_n) */
/* 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_with_name("glob");
#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 = MUTABLE_GV(*PL_stack_sp--);
SAVESPTR(PL_rs); /* This is not permanent, either. */
PL_rs = newSVpvs_flags("\000", SVs_TEMP);
#ifndef DOSISH
#ifndef CSH
*SvPVX(PL_rs) = '\n';
#endif /* !CSH */
#endif /* !DOSISH */
result = do_readline();
LEAVE_with_name("glob");
return result;
}
PP(pp_rcatline)
{
dVAR;
PL_last_in_gv = cGVOP_gv;
return do_readline();
}
PP(pp_warn)
{
dVAR; dSP; dMARK;
SV *exsv;
const char *pv;
STRLEN len;
if (SP - MARK > 1) {
dTARGET;
do_join(TARG, &PL_sv_no, MARK, SP);
exsv = TARG;
SP = MARK + 1;
}
else if (SP == MARK) {
exsv = &PL_sv_no;
EXTEND(SP, 1);
SP = MARK + 1;
}
else {
exsv = TOPs;
}
if (SvROK(exsv) || (pv = SvPV_const(exsv, len), len)) {
/* well-formed exception supplied */
}
else if (SvROK(ERRSV)) {
exsv = ERRSV;
}
else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
exsv = sv_mortalcopy(ERRSV);
sv_catpvs(exsv, "\t...caught");
}
else {
exsv = newSVpvs_flags("Warning: something's wrong", SVs_TEMP);
}
if (SvROK(exsv) && !PL_warnhook)
Perl_warn(aTHX_ "%"SVf, SVfARG(exsv));
else warn_sv(exsv);
RETSETYES;
}
PP(pp_die)
{
dVAR; dSP; dMARK;
SV *exsv;
const char *pv;
STRLEN len;
#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);
exsv = TARG;
SP = MARK + 1;
}
else {
exsv = TOPs;
}
if (SvROK(exsv) || (pv = SvPV_const(exsv, len), len)) {
/* well-formed exception supplied */
}
else if (SvROK(ERRSV)) {
exsv = ERRSV;
if (sv_isobject(exsv)) {
HV * const stash = SvSTASH(SvRV(exsv));
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(exsv);
PUSHs(file);
PUSHs(line);
PUTBACK;
call_sv(MUTABLE_SV(GvCV(gv)),
G_SCALAR|G_EVAL|G_KEEPERR);
exsv = sv_mortalcopy(*PL_stack_sp--);
}
}
}
else if (SvPOK(ERRSV) && SvCUR(ERRSV)) {
exsv = sv_mortalcopy(ERRSV);
sv_catpvs(exsv, "\t...propagated");
}
else {
exsv = newSVpvs_flags("Died", SVs_TEMP);
}
return die_sv(exsv);
}
/* I/O. */
OP *
Perl_tied_method(pTHX_ const char *const methname, SV **sp, SV *const sv,
const MAGIC *const mg, const U32 flags, U32 argc, ...)
{
PERL_ARGS_ASSERT_TIED_METHOD;
/* Ensure that our flag bits do not overlap. */
assert((TIED_METHOD_MORTALIZE_NOT_NEEDED & G_WANT) == 0);
assert((TIED_METHOD_ARGUMENTS_ON_STACK & G_WANT) == 0);
assert((TIED_METHOD_SAY & G_WANT) == 0);
PUSHMARK(sp);
PUSHs(SvTIED_obj(sv, mg));
if (flags & TIED_METHOD_ARGUMENTS_ON_STACK)
sp += argc;
else if (argc) {
const U32 mortalize_not_needed
= flags & TIED_METHOD_MORTALIZE_NOT_NEEDED;
va_list args;
va_start(args, argc);
do {
SV *const arg = va_arg(args, SV *);
if(mortalize_not_needed)
PUSHs(arg);
else
mPUSHs(arg);
} while (--argc);
va_end(args);
}
PUTBACK;
ENTER_with_name("call_tied_method");
if (flags & TIED_METHOD_SAY) {
/* local $\ = "\n" */
SAVEGENERICSV(PL_ors_sv);
PL_ors_sv = newSVpvs("\n");
}
call_method(methname, flags & G_WANT);
LEAVE_with_name("call_tied_method");
return NORMAL;
}
#define tied_method0(a,b,c,d) \
Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,0)
#define tied_method1(a,b,c,d,e) \
Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,1,e)
#define tied_method2(a,b,c,d,e,f) \
Perl_tied_method(aTHX_ a,b,c,d,G_SCALAR,2,e,f)
PP(pp_open)
{
dVAR; dSP;
dMARK; dORIGMARK;
dTARGET;
SV *sv;
IO *io;
const char *tmps;
STRLEN len;
bool ok;
GV * const gv = MUTABLE_GV(*++MARK);
if (!isGV(gv) && !(SvTYPE(gv) == SVt_PVLV && isGV_with_GP(gv)))
DIE(aTHX_ PL_no_usym, "filehandle");
if ((io = GvIOp(gv))) {
const MAGIC *mg;
IoFLAGS(GvIOp(gv)) &= ~IOf_UNTAINT;
if (IoDIRP(io))
Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
"Opening dirhandle %s also as a file",
GvENAME(gv));
mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
/* Method's args are same as ours ... */
/* ... except handle is replaced by the object */
return Perl_tied_method(aTHX_ "OPEN", mark - 1, MUTABLE_SV(io), mg,
G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
sp - mark);
}
}
if (MARK < SP) {
sv = *++MARK;
}
else {
sv = GvSVn(gv);
}
tmps = SvPV_const(sv, len);
ok = do_openn(gv, tmps, len, FALSE, O_RDONLY, 0, NULL, 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;
GV * const gv = (MAXARG == 0) ? PL_defoutgv : MUTABLE_GV(POPs);
if (MAXARG == 0)
EXTEND(SP, 1);
if (gv) {
IO * const io = GvIO(gv);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
return tied_method0("CLOSE", SP, MUTABLE_SV(io), mg);
}
}
}
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 = MUTABLE_GV(POPs);
GV * const rgv = MUTABLE_GV(POPs);
if (!rgv || !wgv)
goto badexit;
if (!isGV_with_GP(rgv) || !isGV_with_GP(wgv))
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;
const MAGIC *mg;
if (MAXARG < 1)
RETPUSHUNDEF;
gv = MUTABLE_GV(POPs);
io = GvIO(gv);
if (io
&& (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar)))
{
return tied_method0("FILENO", SP, MUTABLE_SV(io), mg);
}
if (!io || !(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.
report_evil_fh(gv);
*/
RETPUSHUNDEF;
}
PUSHi(PerlIO_fileno(fp));
RETURN;
}
PP(pp_umask)
{
dVAR;
dSP;
#ifdef HAS_UMASK
dTARGET;
Mode_t anum;
if (MAXARG < 1) {
anum = PerlLIO_umask(022);
/* setting it to 022 between the two calls to umask avoids
* to have a window where the umask is set to 0 -- meaning
* that another thread could create world-writeable files. */
if (anum != 022)
(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;
SV *discp = NULL;
if (MAXARG < 1)
RETPUSHUNDEF;
if (MAXARG > 1) {
discp = POPs;
}
gv = MUTABLE_GV(POPs);
io = GvIO(gv);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
/* This takes advantage of the implementation of the varargs
function, which I don't think that the optimiser will be able to
figure out. Although, as it's a static function, in theory it
could. */
return Perl_tied_method(aTHX_ "BINMODE", SP, MUTABLE_SV(io), mg,
G_SCALAR|TIED_METHOD_MORTALIZE_NOT_NEEDED,
discp ? 1 : 0, discp);
}
}
if (!io || !(fp = IoIFP(io))) {
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
PUTBACK;
{
STRLEN len = 0;
const char *d = NULL;
int mode;
if (discp)
d = SvPV_const(discp, len);
mode = mode_from_discipline(d, len);
if (PerlIO_binmode(aTHX_ fp, IoTYPE(io), mode, d)) {
if (IoOFP(io) && IoOFP(io) != IoIFP(io)) {
if (!PerlIO_binmode(aTHX_ IoOFP(io), IoTYPE(io), mode, d)) {
SPAGAIN;
RETPUSHUNDEF;
}
}
SPAGAIN;
RETPUSHYES;
}
else {
SPAGAIN;
RETPUSHUNDEF;
}
}
}
PP(pp_tie)
{
dVAR; dSP; dMARK;
HV* stash;
GV *gv = NULL;
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(MUTABLE_HV(varsv), 0);
break;
case SVt_PVAV:
methname = "TIEARRAY";
break;
case SVt_PVGV:
case SVt_PVLV:
if (isGV_with_GP(varsv)) {
if (SvFAKE(varsv) && !(GvFLAGS(varsv) & GVf_TIEWARNED)) {
deprecate("tie on a handle without *");
GvFLAGS(varsv) |= GVf_TIEWARNED;
}
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 = MUTABLE_SV(GvIOp(varsv));
break;
}
/* FALL THROUGH */
default:
methname = "TIESCALAR";
how = PERL_MAGIC_tiedscalar;
break;
}
items = SP - MARK++;
if (sv_isobject(*MARK)) { /* Calls GET magic. */
ENTER_with_name("call_TIE");
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,(I32)items);
while (items--)
PUSHs(*MARK++);
PUTBACK;
call_method(methname, G_SCALAR);
}
else {
/* Can't use call_method here, else this: fileno FOO; tie @a, "FOO"
* will attempt to invoke IO::File::TIEARRAY, with (best case) the
* wrong error message, and worse case, supreme action at a distance.
* (Sorry obfuscation writers. You're not going to be given this one.)
*/
STRLEN len;
const char *name = SvPV_nomg_const(*MARK, len);
stash = gv_stashpvn(name, len, 0);
if (!stash || !(gv = gv_fetchmethod(stash, methname))) {
DIE(aTHX_ "Can't locate object method \"%s\" via package \"%"SVf"\"",
methname, SVfARG(SvOK(*MARK) ? *MARK : &PL_sv_no));
}
ENTER_with_name("call_TIE");
PUSHSTACKi(PERLSI_MAGIC);
PUSHMARK(SP);
EXTEND(SP,(I32)items);
while (items--)
PUSHs(*MARK++);
PUTBACK;
call_sv(MUTABLE_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 ? NULL : sv), how, NULL, 0);
}
LEAVE_with_name("call_TIE");
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 (isGV_with_GP(sv)) {
if (SvFAKE(sv) && !(GvFLAGS(sv) & GVf_TIEWARNED)) {
deprecate("untie on a handle without *");
GvFLAGS(sv) |= GVf_TIEWARNED;
}
if (!(sv = MUTABLE_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);
PUSHs(SvTIED_obj(MUTABLE_SV(gv), mg));
mXPUSHi(SvREFCNT(obj) - 1);
PUTBACK;
ENTER_with_name("call_UNTIE");
call_sv(MUTABLE_SV(cv), G_VOID);
LEAVE_with_name("call_UNTIE");
SPAGAIN;
}
else if (mg && SvREFCNT(obj) > 1) {
Perl_ck_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 (isGV_with_GP(sv)) {
if (SvFAKE(sv) && !(GvFLAGS(sv) & GVf_TIEWARNED)) {
deprecate("tied on a handle without *");
GvFLAGS(sv) |= GVf_TIEWARNED;
}
if (!(sv = MUTABLE_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 = NULL;
HV * const hv = MUTABLE_HV(POPs);
SV * const sv = newSVpvs_flags("AnyDBM_File", SVs_TEMP);
stash = gv_stashsv(sv, 0);
if (!stash || !(gv = gv_fetchmethod(stash, "TIEHASH"))) {
PUTBACK;
require_pv("AnyDBM_File.pm");
SPAGAIN;
if (!stash || !(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))
mPUSHu(O_RDWR|O_CREAT);
else
mPUSHu(O_RDWR);
PUSHs(right);
PUTBACK;
call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
SPAGAIN;
if (!sv_isobject(TOPs)) {
SP--;
PUSHMARK(SP);
PUSHs(sv);
PUSHs(left);
mPUSHu(O_RDONLY);
PUSHs(right);
PUTBACK;
call_sv(MUTABLE_SV(GvCV(gv)), G_SCALAR);
SPAGAIN;
}
if (sv_isobject(TOPs)) {
sv_unmagic(MUTABLE_SV(hv), PERL_MAGIC_tied);
sv_magic(MUTABLE_SV(hv), TOPs, PERL_MAGIC_tied, NULL, 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))
Perl_croak_no_modify(aTHX);
}
if (!SvPOK(sv)) {
Perl_ck_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;
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;
mPUSHn(value);
}
RETURN;
#else
DIE(aTHX_ "select not implemented");
#endif
}
/*
=for apidoc setdefout
Sets PL_defoutgv, the default file handle for output, to the passed in
typeglob. As PL_defoutgv "owns" a reference on its typeglob, the reference
count of the passed in typeglob is increased by one, and the reference count
of the typeglob that PL_defoutgv points to is decreased by one.
=cut
*/
void
Perl_setdefout(pTHX_ GV *gv)
{
dVAR;
SvREFCNT_inc_simple_void(gv);
SvREFCNT_dec(PL_defoutgv);
PL_defoutgv = gv;
}
PP(pp_select)
{
dVAR; dSP; dTARGET;
HV *hv;
GV * const newdefout = (PL_op->op_private > 0) ? (MUTABLE_GV(POPs)) : NULL;
GV * egv = GvEGVx(PL_defoutgv);
if (!egv)
egv = PL_defoutgv;
hv = isGV_with_GP(egv) ? GvSTASH(egv) : NULL;
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, NULL, TRUE);
XPUSHTARG;
}
else {
mXPUSHs(newRV(MUTABLE_SV(egv)));
}
}
if (newdefout) {
if (!GvIO(newdefout))
gv_IOadd(newdefout);
setdefout(newdefout);
}
RETURN;
}
PP(pp_getc)
{
dVAR; dSP; dTARGET;
GV * const gv = (MAXARG==0) ? PL_stdingv : MUTABLE_GV(POPs);
IO *const io = GvIO(gv);
if (MAXARG == 0)
EXTEND(SP, 1);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
const U32 gimme = GIMME_V;
Perl_tied_method(aTHX_ "GETC", SP, MUTABLE_SV(io), mg, gimme, 0);
if (gimme == G_SCALAR) {
SPAGAIN;
SvSetMagicSV_nosteal(TARG, TOPs);
}
return NORMAL;
}
}
if (!gv || do_eof(gv)) { /* make sure we have fp with something */
if (!io || (!IoIFP(io) && IoTYPE(io) != IoTYPE_WRONLY))
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
TAINT;
sv_setpvs(TARG, " ");
*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;
PERL_ARGS_ASSERT_DOFORM;
if (cv && CvCLONE(cv))
cv = MUTABLE_CV(sv_2mortal(MUTABLE_SV(cv_clone(cv))));
ENTER;
SAVETMPS;
PUSHBLOCK(cx, CXt_FORMAT, PL_stack_sp);
PUSHFORMAT(cx, 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 = NULL;
SV *tmpsv = NULL;
if (MAXARG == 0) {
gv = PL_defoutgv;
EXTEND(SP, 1);
}
else {
gv = MUTABLE_GV(POPs);
if (!gv)
gv = PL_defoutgv;
}
io = GvIO(gv);
if (!io) {
RETPUSHNO;
}
if (IoFMT_GV(io))
fgv = IoFMT_GV(io);
else
fgv = gv;
if (!fgv)
goto not_a_format_reference;
cv = GvFORM(fgv);
if (!cv) {
const char *name;
tmpsv = sv_newmortal();
gv_efullname4(tmpsv, fgv, NULL, FALSE);
name = SvPV_nolen_const(tmpsv);
if (name && *name)
DIE(aTHX_ "Undefined format \"%s\" called", name);
not_a_format_reference:
DIE(aTHX_ "Not a format reference");
}
IoFLAGS(io) &= ~IOf_DIDTOP;
return doform(cv,gv,PL_op->op_next);
}
PP(pp_leavewrite)
{
dVAR; dSP;
GV * const gv = cxstack[cxstack_ix].blk_format.gv;
register IO * const io = GvIOp(gv);
PerlIO *ofp;
PerlIO *fp;
SV **newsp;
I32 gimme;
register PERL_CONTEXT *cx;
OP *retop;
if (!io || !(ofp = IoOFP(io)))
goto forget_top;
DEBUG_f(PerlIO_printf(Perl_debug_log, "left=%ld, todo=%ld\n",
(long)IoLINES_LEFT(io), (long)FmLINES(PL_formtarget)));
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_fetchpvs("top", GV_NOTQUAL, 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, NULL, FALSE);
name = SvPV_nolen_const(sv);
if (name && *name)
DIE(aTHX_ "Undefined top format \"%s\" called", name);
else
DIE(aTHX_ "Undefined top format called");
}
return doform(cv, gv, PL_op);
}
forget_top:
POPBLOCK(cx,PL_curpm);
POPFORMAT(cx);
retop = cx->blk_sub.retop;
LEAVE;
fp = IoOFP(io);
if (!fp) {
if (IoIFP(io))
report_wrongway_fh(gv, '<');
else
report_evil_fh(gv);
PUSHs(&PL_sv_no);
}
else {
if ((IoLINES_LEFT(io) -= FmLINES(PL_formtarget)) < 0) {
Perl_ck_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 retop;
}
PP(pp_prtf)
{
dVAR; dSP; dMARK; dORIGMARK;
PerlIO *fp;
SV *sv;
GV * const gv
= (PL_op->op_flags & OPf_STACKED) ? MUTABLE_GV(*++MARK) : PL_defoutgv;
IO *const io = GvIO(gv);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
if (MARK == ORIGMARK) {
MEXTEND(SP, 1);
++MARK;
Move(MARK, MARK + 1, (SP - MARK) + 1, SV*);
++SP;
}
return Perl_tied_method(aTHX_ "PRINTF", mark - 1, MUTABLE_SV(io),
mg,
G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
sp - mark);
}
}
sv = newSV(0);
if (!io) {
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
goto just_say_no;
}
else if (!(fp = IoOFP(io))) {
if (IoIFP(io))
report_wrongway_fh(gv, '<');
else if (ckWARN(WARN_CLOSED))
report_evil_fh(gv);
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 = MUTABLE_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, NULL)) {
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 = MUTABLE_GV(*++MARK);
if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD)
&& gv && (io = GvIO(gv)) )
{
const MAGIC *const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
return Perl_tied_method(aTHX_ "READ", mark - 1, MUTABLE_SV(io), mg,
G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
sp - mark);
}
}
if (!gv)
goto say_undef;
bufsv = *++MARK;
if (! SvOK(bufsv))
sv_setpvs(bufsv, "");
length = SvIVx(*++MARK);
SETERRNO(0,0);
if (MARK < SP)
offset = SvIVx(*++MARK);
else
offset = 0;
io = GvIO(gv);
if (!io || !IoIFP(io)) {
report_evil_fh(gv);
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;
/* MSG_TRUNC can give oversized count; quietly lose it */
if (count > length)
count = length;
#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;
}
#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)
report_wrongway_fh(gv, '>');
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_syswrite)
{
dVAR; dSP; dMARK; dORIGMARK; dTARGET;
SV *bufsv;
const char *buffer;
SSize_t retval;
STRLEN blen;
STRLEN orig_blen_bytes;
const int op_type = PL_op->op_type;
bool doing_utf8;
U8 *tmpbuf = NULL;
GV *const gv = MUTABLE_GV(*++MARK);
IO *const io = GvIO(gv);
if (op_type == OP_SYSWRITE && io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
if (MARK == SP - 1) {
SV *sv = *SP;
mXPUSHi(sv_len(sv));
PUTBACK;
}
return Perl_tied_method(aTHX_ "WRITE", mark - 1, MUTABLE_SV(io), mg,
G_SCALAR | TIED_METHOD_ARGUMENTS_ON_STACK,
sp - mark);
}
}
if (!gv)
goto say_undef;
bufsv = *++MARK;
SETERRNO(0,0);
if (!io || !IoIFP(io) || IoTYPE(io) == IoTYPE_RDONLY) {
retval = -1;
if (io && IoIFP(io))
report_wrongway_fh(gv, '<');
else
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
goto say_undef;
}
/* Do this first to trigger any overloading. */
buffer = SvPV_const(bufsv, blen);
orig_blen_bytes = blen;
doing_utf8 = DO_UTF8(bufsv);
if (PerlIO_isutf8(IoIFP(io))) {
if (!SvUTF8(bufsv)) {
/* We don't modify the original scalar. */
tmpbuf = bytes_to_utf8((const U8*) buffer, &blen);
buffer = (char *) tmpbuf;
doing_utf8 = TRUE;
}
}
else if (doing_utf8) {
STRLEN tmplen = blen;
U8 * const result = bytes_from_utf8((const U8*) buffer, &tmplen, &doing_utf8);
if (!doing_utf8) {
tmpbuf = result;
buffer = (char *) tmpbuf;
blen = tmplen;
}
else {
assert((char *)result == buffer);
Perl_croak(aTHX_ "Wide character in %s", OP_DESC(PL_op));
}
}
#ifdef HAS_SOCKET
if (op_type == OP_SEND) {
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
#endif
{
Size_t length = 0; /* This length is in characters. */
STRLEN blen_chars;
IV offset;
if (doing_utf8) {
if (tmpbuf) {
/* The SV is bytes, and we've had to upgrade it. */
blen_chars = orig_blen_bytes;
} else {
/* The SV really is UTF-8. */
if (SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
/* Don't call sv_len_utf8 again because it will call magic
or overloading a second time, and we might get back a
different result. */
blen_chars = utf8_length((U8*)buffer, (U8*)buffer + blen);
} else {
/* It's safe, and it may well be cached. */
blen_chars = sv_len_utf8(bufsv);
}
}
} else {
blen_chars = blen;
}
if (MARK >= SP) {
length = blen_chars;
} else {
#if Size_t_size > IVSIZE
length = (Size_t)SvNVx(*++MARK);
#else
length = (Size_t)SvIVx(*++MARK);
#endif
if ((SSize_t)length < 0) {
Safefree(tmpbuf);
DIE(aTHX_ "Negative length");
}
}
if (MARK < SP) {
offset = SvIVx(*++MARK);
if (offset < 0) {
if (-offset > (IV)blen_chars) {
Safefree(tmpbuf);
DIE(aTHX_ "Offset outside string");
}
offset += blen_chars;
} else if (offset > (IV)blen_chars) {
Safefree(tmpbuf);
DIE(aTHX_ "Offset outside string");
}
} else
offset = 0;
if (length > blen_chars - offset)
length = blen_chars - offset;
if (doing_utf8) {
/* Here we convert length from characters to bytes. */
if (tmpbuf || SvGMAGICAL(bufsv) || SvAMAGIC(bufsv)) {
/* Either we had to convert the SV, or the SV is magical, or
the SV has overloading, in which case we can't or mustn't
or mustn't call it again. */
buffer = (const char*)utf8_hop((const U8 *)buffer, offset);
length = utf8_hop((U8 *)buffer, length) - (U8 *)buffer;
} else {
/* It's a real UTF-8 SV, and it's not going to change under
us. Take advantage of any cache. */
I32 start = offset;
I32 len_I32 = length;
/* Convert the start and end character positions to bytes.
Remember that the second argument to sv_pos_u2b is relative
to the first. */
sv_pos_u2b(bufsv, &start, &len_I32);
buffer += start;
length = len_I32;
}
}
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);
}
}
if (retval < 0)
goto say_undef;
SP = ORIGMARK;
if (doing_utf8)
retval = utf8_length((U8*)buffer, (U8*)buffer + retval);
Safefree(tmpbuf);
#if Size_t_size > IVSIZE
PUSHn(retval);
#else
PUSHi(retval);
#endif
RETURN;
say_undef:
Safefree(tmpbuf);
SP = ORIGMARK;
RETPUSHUNDEF;
}
PP(pp_eof)
{
dVAR; dSP;
GV *gv;
IO *io;
const MAGIC *mg;
/*
* in Perl 5.12 and later, the additional parameter is a bitmask:
* 0 = eof
* 1 = eof(FH)
* 2 = eof() <- ARGV magic
*
* I'll rely on the compiler's trace flow analysis to decide whether to
* actually assign this out here, or punt it into the only block where it is
* used. Doing it out here is DRY on the condition logic.
*/
unsigned int which;
if (MAXARG) {
gv = PL_last_in_gv = MUTABLE_GV(POPs); /* eof(FH) */
which = 1;
}
else {
EXTEND(SP, 1);
if (PL_op->op_flags & OPf_SPECIAL) {
gv = PL_last_in_gv = GvEGVx(PL_argvgv); /* eof() - ARGV magic */
which = 2;
}
else {
gv = PL_last_in_gv; /* eof */
which = 0;
}
}
if (!gv)
RETPUSHNO;
if ((io = GvIO(gv)) && (mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar))) {
return tied_method1("EOF", SP, MUTABLE_SV(io), mg, newSVuv(which));
}
if (!MAXARG && (PL_op->op_flags & OPf_SPECIAL)) { /* eof() */
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, NULL);
if (GvSV(gv))
sv_setpvs(GvSV(gv), "-");
else
GvSV(gv) = newSVpvs("-");
SvSETMAGIC(GvSV(gv));
}
else if (!nextargv(gv))
RETPUSHYES;
}
}
PUSHs(boolSV(do_eof(gv)));
RETURN;
}
PP(pp_tell)
{
dVAR; dSP; dTARGET;
GV *gv;
IO *io;
if (MAXARG != 0)
PL_last_in_gv = MUTABLE_GV(POPs);
else
EXTEND(SP, 1);
gv = PL_last_in_gv;
io = GvIO(gv);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
return tied_method0("TELL", SP, MUTABLE_SV(io), mg);
}
}
else if (!gv) {
if (!errno)
SETERRNO(EBADF,RMS_IFI);
PUSHi(-1);
RETURN;
}
#if LSEEKSIZE > IVSIZE
PUSHn( do_tell(gv) );
#else
PUSHi( do_tell(gv) );
#endif
RETURN;
}
PP(pp_sysseek)
{
dVAR; dSP;
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
GV * const gv = PL_last_in_gv = MUTABLE_GV(POPs);
IO *const io = GvIO(gv);
if (io) {
const MAGIC * const mg = SvTIED_mg((const SV *)io, PERL_MAGIC_tiedscalar);
if (mg) {
#if LSEEKSIZE > IVSIZE
SV *const offset_sv = newSVnv((NV) offset);
#else
SV *const offset_sv = newSViv(offset);
#endif
return tied_method2("SEEK", SP, MUTABLE_SV(io), mg, offset_sv,
newSViv(whence));
}
}
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);
mPUSHs(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:
io = GvIO(tmpgv);
if (!io)
result = 0;
else {
PerlIO *fp;
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 (isGV_with_GP(sv)) {
tmpgv = MUTABLE_GV(sv); /* *main::FRED for example */
goto do_ftruncate_gv;
}
else if (SvROK(sv) && isGV_with_GP(SvRV(sv))) {
tmpgv = MUTABLE_GV(SvRV(sv)); /* \*main::FRED for example */
goto do_ftruncate_gv;
}
else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
io = MUTABLE_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 = MUTABLE_GV(POPs);
IO * const io = gv ? GvIOn(gv) : NULL;
char *s;
IV retval;
if (!io || !argsv || !IoIFP(io)) {
report_evil_fh(gv);
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;
const int argtype = POPi;
GV * const gv = (MAXARG == 0) ? PL_last_in_gv : MUTABLE_GV(POPs);
IO *const io = GvIO(gv);
PerlIO *const fp = io ? IoIFP(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 {
report_evil_fh(gv);
value = 0;
SETERRNO(EBADF,RMS_IFI);
}
PUSHi(value);
RETURN;
#else
DIE(aTHX_ PL_no_func, "flock()");
#endif
}
/* Sockets. */
#ifdef HAS_SOCKET
PP(pp_socket)
{
dVAR; dSP;
const int protocol = POPi;
const int type = POPi;
const int domain = POPi;
GV * const gv = MUTABLE_GV(POPs);
register IO * const io = gv ? GvIOn(gv) : NULL;
int fd;
if (!io) {
report_evil_fh(gv);
if (io && 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;
}
#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 = MUTABLE_GV(POPs);
GV * const gv1 = MUTABLE_GV(POPs);
register IO * const io1 = gv1 ? GvIOn(gv1) : NULL;
register IO * const io2 = gv2 ? GvIOn(gv2) : NULL;
int fd[2];
if (!io1)
report_evil_fh(gv1);
if (!io2)
report_evil_fh(gv2);
if (io1 && IoIFP(io1))
do_close(gv1, FALSE);
if (io2 && IoIFP(io2))
do_close(gv2, FALSE);
if (!io1 || !io2)
RETPUSHUNDEF;
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
}
#ifdef HAS_SOCKET
PP(pp_bind)
{
dVAR; dSP;
SV * const addrsv = POPs;
/* OK, so on what platform does bind modify addr? */
const char *addr;
GV * const gv = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
STRLEN len;
const int op_type = PL_op->op_type;
if (!io || !IoIFP(io))
goto nuts;
addr = SvPV_const(addrsv, len);
TAINT_PROPER(PL_op_desc[op_type]);
if ((op_type == OP_BIND
? PerlSock_bind(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len)
: PerlSock_connect(PerlIO_fileno(IoIFP(io)), (struct sockaddr *)addr, len))
>= 0)
RETPUSHYES;
else
RETPUSHUNDEF;
nuts:
report_evil_fh(gv);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
}
PP(pp_listen)
{
dVAR; dSP;
const int backlog = POPi;
GV * const gv = MUTABLE_GV(POPs);
register IO * const io = gv ? GvIOn(gv) : NULL;
if (!io || !IoIFP(io))
goto nuts;
if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
RETPUSHYES;
else
RETPUSHUNDEF;
nuts:
report_evil_fh(gv);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
}
PP(pp_accept)
{
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 = MUTABLE_GV(POPs);
GV * const ngv = MUTABLE_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 defined(OEMVS)
if (len == 0) {
/* Some platforms indicate zero length when an AF_UNIX client is
* not bound. Simulate a non-zero-length sockaddr structure in
* this case. */
namebuf[0] = 0; /* sun_len */
namebuf[1] = AF_UNIX; /* sun_family */
len = 2;
}
#endif
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:
report_evil_fh(ggv);
SETERRNO(EBADF,SS_IVCHAN);
badexit:
RETPUSHUNDEF;
}
PP(pp_shutdown)
{
dVAR; dSP; dTARGET;
const int how = POPi;
GV * const gv = MUTABLE_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:
report_evil_fh(gv);
SETERRNO(EBADF,SS_IVCHAN);
RETPUSHUNDEF;
}
PP(pp_ssockopt)
{
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 = MUTABLE_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:
report_evil_fh(gv);
SETERRNO(EBADF,SS_IVCHAN);
nuts2:
RETPUSHUNDEF;
}
PP(pp_getpeername)
{
dVAR; dSP;
const int optype = PL_op->op_type;
GV * const gv = MUTABLE_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:
report_evil_fh(gv);
SETERRNO(EBADF,SS_IVCHAN);
nuts2:
RETPUSHUNDEF;
}
#endif
/* Stat calls. */
PP(pp_stat)
{
dVAR;
dSP;
GV *gv = NULL;
IO *io;
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:
Perl_ck_warner(aTHX_ packWARN(WARN_IO),
"lstat() on filehandle %s", gv ? 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_setpvs(PL_statname, "");
if(gv) {
io = GvIO(gv);
do_fstat_have_io:
if (io) {
if (IoIFP(io)) {
PL_laststatval =
PerlLIO_fstat(PerlIO_fileno(IoIFP(io)), &PL_statcache);
} else if (IoDIRP(io)) {
PL_laststatval =
PerlLIO_fstat(my_dirfd(IoDIRP(io)), &PL_statcache);
} else {
PL_laststatval = -1;
}
}
}
}
if (PL_laststatval < 0) {
report_evil_fh(gv);
max = 0;
}
}
else {
SV* const sv = POPs;
if (isGV_with_GP(sv)) {
gv = MUTABLE_GV(sv);
goto do_fstat;
} else if(SvROK(sv) && isGV_with_GP(SvRV(sv))) {
gv = MUTABLE_GV(SvRV(sv));
if (PL_op->op_type == OP_LSTAT)
goto do_fstat_warning_check;
goto do_fstat;
} else if (SvROK(sv) && SvTYPE(SvRV(sv)) == SVt_PVIO) {
io = MUTABLE_IO(SvRV(sv));
if (PL_op->op_type == OP_LSTAT)
goto do_fstat_warning_check;
goto do_fstat_have_io;
}
sv_setpv(PL_statname, SvPV_nolen_const(sv));
PL_statgv = NULL;
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);
mPUSHi(PL_statcache.st_dev);
mPUSHi(PL_statcache.st_ino);
mPUSHu(PL_statcache.st_mode);
mPUSHu(PL_statcache.st_nlink);
#if Uid_t_size > IVSIZE
mPUSHn(PL_statcache.st_uid);
#else
# if Uid_t_sign <= 0
mPUSHi(PL_statcache.st_uid);
# else
mPUSHu(PL_statcache.st_uid);
# endif
#endif
#if Gid_t_size > IVSIZE
mPUSHn(PL_statcache.st_gid);
#else
# if Gid_t_sign <= 0
mPUSHi(PL_statcache.st_gid);
# else
mPUSHu(PL_statcache.st_gid);
# endif
#endif
#ifdef USE_STAT_RDEV
mPUSHi(PL_statcache.st_rdev);
#else
PUSHs(newSVpvs_flags("", SVs_TEMP));
#endif
#if Off_t_size > IVSIZE
mPUSHn(PL_statcache.st_size);
#else
mPUSHi(PL_statcache.st_size);
#endif
#ifdef BIG_TIME
mPUSHn(PL_statcache.st_atime);
mPUSHn(PL_statcache.st_mtime);
mPUSHn(PL_statcache.st_ctime);
#else
mPUSHi(PL_statcache.st_atime);
mPUSHi(PL_statcache.st_mtime);
mPUSHi(PL_statcache.st_ctime);
#endif
#ifdef USE_STAT_BLOCKS
mPUSHu(PL_statcache.st_blksize);
mPUSHu(PL_statcache.st_blocks);
#else
PUSHs(newSVpvs_flags("", SVs_TEMP));
PUSHs(newSVpvs_flags("", SVs_TEMP));
#endif
}
RETURN;
}
#define tryAMAGICftest_MG(chr) STMT_START { \
if ( (SvFLAGS(TOPs) & (SVf_ROK|SVs_GMG)) \
&& S_try_amagic_ftest(aTHX_ chr)) \
return NORMAL; \
} STMT_END
STATIC bool
S_try_amagic_ftest(pTHX_ char chr) {
dVAR;
dSP;
SV* const arg = TOPs;
assert(chr != '?');
SvGETMAGIC(arg);
if ((PL_op->op_flags & OPf_KIDS)
&& SvAMAGIC(TOPs))
{
const char tmpchr = chr;
const OP *next;
SV * const tmpsv = amagic_call(arg,
newSVpvn_flags(&tmpchr, 1, SVs_TEMP),
ftest_amg, AMGf_unary);
if (!tmpsv)
return FALSE;
SPAGAIN;
next = PL_op->op_next;
if (next->op_type >= OP_FTRREAD &&
next->op_type <= OP_FTBINARY &&
next->op_private & OPpFT_STACKED
) {
if (SvTRUE(tmpsv))
/* leave the object alone */
return TRUE;
}
SETs(tmpsv);
PUTBACK;
return TRUE;
}
return FALSE;
}
/* 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 (!SvTRUE(TOPs)) { 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
Mode_t stat_mode = S_IRUSR;
bool effective = FALSE;
char opchar = '?';
dSP;
switch (PL_op->op_type) {
case OP_FTRREAD: opchar = 'R'; break;
case OP_FTRWRITE: opchar = 'W'; break;
case OP_FTREXEC: opchar = 'X'; break;
case OP_FTEREAD: opchar = 'r'; break;
case OP_FTEWRITE: opchar = 'w'; break;
case OP_FTEEXEC: opchar = 'x'; break;
}
tryAMAGICftest_MG(opchar);
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 = X_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 *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_flags(0);
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;
char opchar = '?';
dSP;
switch (op_type) {
case OP_FTIS: opchar = 'e'; break;
case OP_FTSIZE: opchar = 's'; break;
case OP_FTMTIME: opchar = 'M'; break;
case OP_FTCTIME: opchar = 'C'; break;
case OP_FTATIME: opchar = 'A'; break;
}
tryAMAGICftest_MG(opchar);
STACKED_FTEST_CHECK;
result = my_stat_flags(0);
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;
char opchar = '?';
dSP;
switch (PL_op->op_type) {
case OP_FTROWNED: opchar = 'O'; break;
case OP_FTEOWNED: opchar = 'o'; break;
case OP_FTZERO: opchar = 'z'; break;
case OP_FTSOCK: opchar = 'S'; break;
case OP_FTCHR: opchar = 'c'; break;
case OP_FTBLK: opchar = 'b'; break;
case OP_FTFILE: opchar = 'f'; break;
case OP_FTDIR: opchar = 'd'; break;
case OP_FTPIPE: opchar = 'p'; break;
case OP_FTSUID: opchar = 'u'; break;
case OP_FTSGID: opchar = 'g'; break;
case OP_FTSVTX: opchar = 'k'; break;
}
tryAMAGICftest_MG(opchar);
STACKED_FTEST_CHECK;
/* 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) {
if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
(void) POPs;
RETPUSHNO;
}
#endif
#ifndef S_ISGID
if(PL_op->op_type == OP_FTSGID) {
if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
(void) POPs;
RETPUSHNO;
}
#endif
#ifndef S_ISVTX
if(PL_op->op_type == OP_FTSVTX) {
if ((PL_op->op_flags & OPf_REF) == 0 && (PL_op->op_private & OPpFT_STACKED) == 0)
(void) POPs;
RETPUSHNO;
}
#endif
result = my_stat_flags(0);
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;
dSP;
I32 result;
tryAMAGICftest_MG('l');
result = my_lstat_flags(0);
SPAGAIN;
if (result < 0)
RETPUSHUNDEF;
if (S_ISLNK(PL_statcache.st_mode))
RETPUSHYES;
RETPUSHNO;
}
PP(pp_fttty)
{
dVAR;
dSP;
int fd;
GV *gv;
SV *tmpsv = NULL;
char *name = NULL;
STRLEN namelen;
tryAMAGICftest_MG('t');
STACKED_FTEST_CHECK;
if (PL_op->op_flags & OPf_REF)
gv = cGVOP_gv;
else if (isGV_with_GP(TOPs))
gv = MUTABLE_GV(POPs);
else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
gv = MUTABLE_GV(SvRV(POPs));
else {
tmpsv = POPs;
name = SvPV_nomg(tmpsv, namelen);
gv = gv_fetchpvn_flags(name, namelen, SvUTF8(tmpsv), SVt_PVIO);
}
if (GvIO(gv) && IoIFP(GvIOp(gv)))
fd = PerlIO_fileno(IoIFP(GvIOp(gv)));
else if (tmpsv && SvOK(tmpsv)) {
if (isDIGIT(*name))
fd = atoi(name);
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;
tryAMAGICftest_MG(PL_op->op_type == OP_FTTEXT ? 'T' : 'B');
STACKED_FTEST_CHECK;
if (PL_op->op_flags & OPf_REF)
gv = cGVOP_gv;
else if (isGV_with_GP(TOPs))
gv = MUTABLE_GV(POPs);
else if (SvROK(TOPs) && isGV(SvRV(TOPs)))
gv = MUTABLE_GV(SvRV(POPs));
else
gv = NULL;
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_setpvs(PL_statname, "");
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 {
report_evil_fh(cGVOP_gv);
SETERRNO(EBADF,RMS_IFI);
RETPUSHUNDEF;
}
}
else {
sv = POPs;
really_filename:
PL_statgv = NULL;
PL_laststype = OP_STAT;
sv_setpv(PL_statname, SvPV_nomg_const_nolen(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, NULL);
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 < (I32)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 (PL_op->op_flags & OPf_SPECIAL) {
gv = gv_fetchsv(sv, 0, SVt_PVIO);
}
else if (isGV_with_GP(sv)) {
gv = MUTABLE_GV(sv);
}
else if (SvROK(sv) && isGV_with_GP(SvRV(sv))) {
gv = MUTABLE_GV(SvRV(sv));
}
else {
tmps = SvPV_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 (IoDIRP(io)) {
PUSHi(fchdir(my_dirfd(IoDIRP(io))) >= 0);
} else if (IoIFP(io)) {
PUSHi(fchdir(PerlIO_fileno(IoIFP(io))) >= 0);
}
else {
report_evil_fh(gv);
SETERRNO(EBADF, RMS_IFI);
PUSHi(0);
}
}
else {
report_evil_fh(gv);
SETERRNO(EBADF,RMS_IFI);
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);
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;
Size_t size = strlen(cmd) + (strlen(filename) * 2) + 10;
PERL_ARGS_ASSERT_DOONELINER;
Newx(cmdline, size, char);
my_strlcpy(cmdline, cmd, size);
my_strlcat(cmdline, " ", size);
for (s = cmdline + strlen(cmdline); *filename; ) {
*s++ = '\\';
*s++ = *filename++;
}
if (s - cmdline < size)
my_strlcpy(s, " 2>&1", size - (s - cmdline));
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 != NULL) {
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 = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
if (!io)
goto nope;
if ((IoIFP(io) || IoOFP(io)))
Perl_ck_warner_d(aTHX_ packWARN2(WARN_IO, WARN_DEPRECATED),
"Opening filehandle %s also as a directory",
GvENAME(gv));
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 = MUTABLE_GV(POPs);
register const Direntry_t *dp;
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
Perl_ck_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
mXPUSHs(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 = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
Perl_ck_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 = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
Perl_ck_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 = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
Perl_ck_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 = MUTABLE_GV(POPs);
register IO * const io = GvIOn(gv);
if (!io || !IoDIRP(io)) {
Perl_ck_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;