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-rw-r--r--pp_sys.c291
1 files changed, 198 insertions, 93 deletions
diff --git a/pp_sys.c b/pp_sys.c
index 9329ffdb40..ca4d1bd4f3 100644
--- a/pp_sys.c
+++ b/pp_sys.c
@@ -1,6 +1,6 @@
/* pp_sys.c
*
- * Copyright (c) 1991-2000, Larry Wall
+ * Copyright (c) 1991-2001, Larry Wall
*
* You may distribute under the terms of either the GNU General Public
* License or the Artistic License, as specified in the README file.
@@ -35,11 +35,6 @@
# include <shadow.h>
#endif
-/* XXX If this causes problems, set i_unistd=undef in the hint file. */
-#ifdef I_UNISTD
-# include <unistd.h>
-#endif
-
#ifdef HAS_SYSCALL
#ifdef __cplusplus
extern "C" int syscall(unsigned long,...);
@@ -54,25 +49,10 @@ extern "C" int syscall(unsigned long,...);
# include <sys/resource.h>
#endif
-#if defined(HAS_SOCKET) && !defined(VMS) /* VMS handles sockets via vmsish.h */
-# include <sys/socket.h>
-# if defined(USE_SOCKS) && defined(I_SOCKS)
-# include <socks.h>
-# endif
-# ifdef I_NETDB
-# include <netdb.h>
-# endif
-# ifndef ENOTSOCK
-# ifdef I_NET_ERRNO
-# include <net/errno.h>
-# endif
-# endif
-#endif
-
#ifdef HAS_SELECT
-#ifdef I_SYS_SELECT
-#include <sys/select.h>
-#endif
+# ifdef I_SYS_SELECT
+# include <sys/select.h>
+# endif
#endif
/* XXX Configure test needed.
@@ -142,7 +122,7 @@ extern int h_errno;
# include <fcntl.h>
# endif
-# if defined(HAS_FCNTL) && defined(F_SETLK) && defined (F_SETLKW)
+# if defined(HAS_FCNTL) && defined(FCNTL_CAN_LOCK)
# define FLOCK fcntl_emulate_flock
# define FCNTL_EMULATE_FLOCK
# else /* no flock() or fcntl(F_SETLK,...) */
@@ -317,6 +297,13 @@ PP(pp_backtick)
mode = "rt";
fp = PerlProc_popen(tmps, mode);
if (fp) {
+ char *type = NULL;
+ if (PL_curcop->cop_io) {
+ type = SvPV_nolen(PL_curcop->cop_io);
+ }
+ 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)
@@ -461,7 +448,7 @@ PP(pp_die)
}
else {
tmpsv = TOPs;
- tmps = SvROK(tmpsv) ? Nullch : SvPV(tmpsv, len);
+ tmps = (SvROK(tmpsv) && PL_in_eval) ? Nullch : SvPV(tmpsv, len);
}
if (!tmps || !len) {
SV *error = ERRSV;
@@ -658,8 +645,15 @@ PP(pp_fileno)
RETURN;
}
- if (!gv || !(io = GvIO(gv)) || !(fp = IoIFP(io)))
+ 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;
}
@@ -697,11 +691,14 @@ PP(pp_binmode)
PerlIO *fp;
MAGIC *mg;
SV *discp = Nullsv;
+ STRLEN len = 0;
+ char *names = NULL;
if (MAXARG < 1)
RETPUSHUNDEF;
- if (MAXARG > 1)
+ if (MAXARG > 1) {
discp = POPs;
+ }
gv = (GV*)POPs;
@@ -719,10 +716,18 @@ PP(pp_binmode)
}
EXTEND(SP, 1);
- if (!(io = GvIO(gv)) || !(fp = IoIFP(io)))
- RETPUSHUNDEF;
+ if (!(io = GvIO(gv)) || !(fp = IoIFP(io))) {
+ if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
+ report_evil_fh(gv, io, PL_op->op_type);
+ RETPUSHUNDEF;
+ }
- if (do_binmode(fp,IoTYPE(io),mode_from_discipline(discp)))
+ if (discp) {
+ names = SvPV(discp,len);
+ }
+
+ if (PerlIO_binmode(aTHX_ fp,IoTYPE(io),mode_from_discipline(discp),
+ (discp) ? SvPV_nolen(discp) : Nullch))
RETPUSHYES;
else
RETPUSHUNDEF;
@@ -794,9 +799,12 @@ PP(pp_tie)
POPSTACK;
if (sv_isobject(sv)) {
sv_unmagic(varsv, how);
- /* Croak if a self-tie is attempted */
- if (varsv == SvRV(sv))
- Perl_croak(aTHX_ "Self-ties are not supported");
+ /* Croak if a self-tie on an aggregate is attempted. */
+ if (varsv == SvRV(sv) &&
+ (SvTYPE(sv) == SVt_PVAV ||
+ SvTYPE(sv) == SVt_PVHV))
+ Perl_croak(aTHX_
+ "Self-ties of arrays and hashes are not supported");
sv_magic(varsv, sv, how, Nullch, 0);
}
LEAVE;
@@ -1061,7 +1069,6 @@ PP(pp_sselect)
void
Perl_setdefout(pTHX_ GV *gv)
{
- dTHR;
if (gv)
(void)SvREFCNT_inc(gv);
if (PL_defoutgv)
@@ -1132,6 +1139,16 @@ PP(pp_getc)
TAINT;
sv_setpv(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(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;
}
@@ -1144,7 +1161,6 @@ PP(pp_read)
STATIC OP *
S_doform(pTHX_ CV *cv, GV *gv, OP *retop)
{
- dTHR;
register PERL_CONTEXT *cx;
I32 gimme = GIMME_V;
AV* padlist = CvPADLIST(cv);
@@ -1220,6 +1236,8 @@ PP(pp_leavewrite)
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)
{
@@ -1259,13 +1277,16 @@ PP(pp_leavewrite)
s++;
}
if (s) {
- PerlIO_write(ofp, SvPVX(PL_formtarget), s - SvPVX(PL_formtarget));
+ STRLEN save = SvCUR(PL_formtarget);
+ SvCUR_set(PL_formtarget, s - SvPVX(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)
- PerlIO_write(ofp, SvPVX(PL_formfeed), SvCUR(PL_formfeed));
+ do_print(PL_formfeed, ofp);
IoLINES_LEFT(io) = IoPAGE_LEN(io);
IoPAGE(io)++;
PL_formtarget = PL_toptarget;
@@ -1326,8 +1347,7 @@ PP(pp_leavewrite)
if (ckWARN(WARN_IO))
Perl_warner(aTHX_ WARN_IO, "page overflow");
}
- if (!PerlIO_write(ofp, SvPVX(PL_formtarget), SvCUR(PL_formtarget)) ||
- PerlIO_error(fp))
+ if (!do_print(PL_formtarget, fp))
PUSHs(&PL_sv_no);
else {
FmLINES(PL_formtarget) = 0;
@@ -1338,6 +1358,7 @@ PP(pp_leavewrite)
PUSHs(&PL_sv_yes);
}
}
+bad_ofp:
PL_formtarget = PL_bodytarget;
PUTBACK;
return pop_return();
@@ -1380,7 +1401,6 @@ PP(pp_prtf)
sv = NEWSV(0,0);
if (!(io = GvIO(gv))) {
- dTHR;
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS$_IFI);
@@ -1467,10 +1487,14 @@ PP(pp_sysread)
IO *io;
char *buffer;
SSize_t length;
+ SSize_t count;
Sock_size_t bufsize;
SV *bufsv;
STRLEN blen;
MAGIC *mg;
+ int fp_utf8;
+ Size_t got = 0;
+ Size_t wanted;
gv = (GV*)*++MARK;
if ((PL_op->op_type == OP_READ || PL_op->op_type == OP_SYSREAD) &&
@@ -1495,10 +1519,7 @@ PP(pp_sysread)
bufsv = *++MARK;
if (! SvOK(bufsv))
sv_setpvn(bufsv, "", 0);
- buffer = SvPV_force(bufsv, blen);
length = SvIVx(*++MARK);
- if (length < 0)
- DIE(aTHX_ "Negative length");
SETERRNO(0,0);
if (MARK < SP)
offset = SvIVx(*++MARK);
@@ -1507,6 +1528,18 @@ PP(pp_sysread)
io = GvIO(gv);
if (!io || !IoIFP(io))
goto say_undef;
+ if ((fp_utf8 = PerlIO_isutf8(IoIFP(io))) && !IN_BYTE) {
+ buffer = SvPVutf8_force(bufsv, blen);
+ /* UTF8 may not have been set if they are all low bytes */
+ SvUTF8_on(bufsv);
+ }
+ else {
+ buffer = SvPV_force(bufsv, blen);
+ }
+ if (length < 0)
+ DIE(aTHX_ "Negative length");
+ wanted = length;
+
#ifdef HAS_SOCKET
if (PL_op->op_type == OP_RECV) {
char namebuf[MAXPATHLEN];
@@ -1519,19 +1552,17 @@ PP(pp_sysread)
if (bufsize >= 256)
bufsize = 255;
#endif
-#ifdef OS2 /* At least Warp3+IAK: only the first byte of bufsize set */
- if (bufsize >= 256)
- bufsize = 255;
-#endif
buffer = SvGROW(bufsv, length+1);
/* 'offset' means 'flags' here */
- length = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
+ count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, offset,
(struct sockaddr *)namebuf, &bufsize);
- if (length < 0)
+ if (count < 0)
RETPUSHUNDEF;
- SvCUR_set(bufsv, length);
+ 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))
@@ -1545,27 +1576,38 @@ PP(pp_sysread)
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 > blen)
DIE(aTHX_ "Offset outside string");
offset += blen;
}
+ if (DO_UTF8(bufsv)) {
+ /* convert offset-as-chars to offset-as-bytes */
+ offset = utf8_hop((U8 *)buffer,offset) - (U8 *) buffer;
+ }
+ more_bytes:
bufsize = SvCUR(bufsv);
- buffer = SvGROW(bufsv, length+offset+1);
+ buffer = SvGROW(bufsv, length+offset+1);
if (offset > bufsize) { /* Zero any newly allocated space */
Zero(buffer+bufsize, offset-bufsize, char);
}
+ buffer = buffer + offset;
+
if (PL_op->op_type == OP_SYSREAD) {
#ifdef PERL_SOCK_SYSREAD_IS_RECV
if (IoTYPE(io) == IoTYPE_SOCKET) {
- length = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
- buffer+offset, length, 0);
+ count = PerlSock_recv(PerlIO_fileno(IoIFP(io)),
+ buffer, length, 0);
}
else
#endif
{
- length = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
- buffer+offset, length);
+ count = PerlLIO_read(PerlIO_fileno(IoIFP(io)),
+ buffer, length);
}
}
else
@@ -1577,18 +1619,18 @@ PP(pp_sysread)
#else
bufsize = sizeof namebuf;
#endif
- length = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer+offset, length, 0,
+ count = PerlSock_recvfrom(PerlIO_fileno(IoIFP(io)), buffer, length, 0,
(struct sockaddr *)namebuf, &bufsize);
}
else
#endif
{
- length = PerlIO_read(IoIFP(io), buffer+offset, length);
- /* fread() returns 0 on both error and EOF */
- if (length == 0 && PerlIO_error(IoIFP(io)))
- length = -1;
+ 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 (length < 0) {
+ if (count < 0) {
if ((IoTYPE(io) == IoTYPE_WRONLY || IoIFP(io) == PerlIO_stdout()
|| IoIFP(io) == PerlIO_stderr()) && ckWARN(WARN_IO))
{
@@ -1608,15 +1650,43 @@ PP(pp_sysread)
}
goto say_undef;
}
- SvCUR_set(bufsv, length+offset);
+ SvCUR_set(bufsv, count+(buffer - SvPVX(bufsv)));
*SvEND(bufsv) = '\0';
(void)SvPOK_only(bufsv);
+ if (fp_utf8 && !IN_BYTE) {
+ /* Look at utf8 we got back and count the characters */
+ char *bend = buffer + count;
+ while (buffer < bend) {
+ STRLEN skip = UTF8SKIP(buffer);
+ if (buffer+skip > bend) {
+ /* partial character - try for rest of it */
+ length = skip - (bend-buffer);
+ offset = bend - SvPVX(bufsv);
+ goto more_bytes;
+ }
+ else {
+ got++;
+ buffer += skip;
+ }
+ }
+ /* 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(bufsv);
+ goto more_bytes;
+ }
+ /* return value is character count */
+ count = got;
+ 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;
- PUSHi(length);
+ PUSHi(count);
RETURN;
say_undef:
@@ -1647,7 +1717,6 @@ PP(pp_send)
char *buffer;
Size_t length;
SSize_t retval;
- IV offset;
STRLEN blen;
MAGIC *mg;
@@ -1669,7 +1738,6 @@ PP(pp_send)
if (!gv)
goto say_undef;
bufsv = *++MARK;
- buffer = SvPV(bufsv, blen);
#if Size_t_size > IVSIZE
length = (Size_t)SvNVx(*++MARK);
#else
@@ -1683,8 +1751,24 @@ PP(pp_send)
retval = -1;
if (ckWARN(WARN_CLOSED))
report_evil_fh(gv, io, PL_op->op_type);
+ goto say_undef;
}
- else if (PL_op->op_type == OP_SYSWRITE) {
+
+ if (PerlIO_isutf8(IoIFP(io))) {
+ buffer = SvPVutf8(bufsv, blen);
+ }
+ else {
+ if (DO_UTF8(bufsv))
+ sv_utf8_downgrade(bufsv, FALSE);
+ buffer = SvPV(bufsv, blen);
+ }
+
+ if (PL_op->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) {
@@ -1697,17 +1781,24 @@ PP(pp_send)
offset = 0;
if (length > blen - offset)
length = blen - offset;
+ if (DO_UTF8(bufsv)) {
+ buffer = (char*)utf8_hop((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+offset, length, 0);
+ 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+offset, length);
+ buffer, length);
}
}
#ifdef HAS_SOCKET
@@ -1715,12 +1806,13 @@ PP(pp_send)
char *sockbuf;
STRLEN mlen;
sockbuf = SvPVx(*++MARK, mlen);
+ /* length is really flags */
retval = PerlSock_sendto(PerlIO_fileno(IoIFP(io)), buffer, blen,
length, (struct sockaddr *)sockbuf, mlen);
}
else
+ /* length is really flags */
retval = PerlSock_send(PerlIO_fileno(IoIFP(io)), buffer, blen, length);
-
#else
else
DIE(aTHX_ PL_no_sock_func, "send");
@@ -1971,9 +2063,11 @@ PP(pp_ioctl)
char *s;
IV retval;
GV *gv = (GV*)POPs;
- IO *io = GvIOn(gv);
+ IO *io = gv ? GvIOn(gv) : 0;
if (!io || !argsv || !IoIFP(io)) {
+ if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
+ report_evil_fh(gv, io, PL_op->op_type);
SETERRNO(EBADF,RMS$_IFI); /* well, sort of... */
RETPUSHUNDEF;
}
@@ -2085,16 +2179,17 @@ PP(pp_socket)
int fd;
gv = (GV*)POPs;
+ io = gv ? GvIOn(gv) : NULL;
- if (!gv) {
+ if (!gv || !io) {
+ if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
+ report_evil_fh(gv, io, PL_op->op_type);
+ if (IoIFP(io))
+ do_close(gv, FALSE);
SETERRNO(EBADF,LIB$_INVARG);
RETPUSHUNDEF;
}
- io = GvIOn(gv);
- if (IoIFP(io))
- do_close(gv, FALSE);
-
TAINT_PROPER("socket");
fd = PerlSock_socket(domain, type, protocol);
if (fd < 0)
@@ -2133,15 +2228,21 @@ PP(pp_sockpair)
gv2 = (GV*)POPs;
gv1 = (GV*)POPs;
- if (!gv1 || !gv2)
+ io1 = gv1 ? GvIOn(gv1) : NULL;
+ io2 = gv2 ? GvIOn(gv2) : NULL;
+ 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;
-
- io1 = GvIOn(gv1);
- io2 = GvIOn(gv2);
- 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)
@@ -2267,9 +2368,9 @@ PP(pp_listen)
#ifdef HAS_SOCKET
int backlog = POPi;
GV *gv = (GV*)POPs;
- register IO *io = GvIOn(gv);
+ register IO *io = gv ? GvIOn(gv) : NULL;
- if (!io || !IoIFP(io))
+ if (!gv || !io || !IoIFP(io))
goto nuts;
if (PerlSock_listen(PerlIO_fileno(IoIFP(io)), backlog) >= 0)
@@ -2546,9 +2647,15 @@ PP(pp_stat)
if (PL_op->op_flags & OPf_REF) {
gv = cGVOP_gv;
- if (PL_op->op_type == OP_LSTAT && ckWARN(WARN_IO))
- Perl_warner(aTHX_ WARN_IO,
+ if (PL_op->op_type == OP_LSTAT) {
+ if (PL_laststype != OP_LSTAT)
+ Perl_croak(aTHX_ "The stat preceding lstat() wasn't an lstat");
+ if (ckWARN(WARN_IO) && gv != PL_defgv)
+ Perl_warner(aTHX_ WARN_IO,
"lstat() on filehandle %s", GvENAME(gv));
+ /* Perl_my_lstat (-l) croak's on filehandle, why warn here? */
+ }
+
do_fstat:
if (gv != PL_defgv) {
PL_laststype = OP_STAT;
@@ -2558,7 +2665,6 @@ PP(pp_stat)
? PerlLIO_fstat(PerlIO_fileno(IoIFP(GvIOn(gv))), &PL_statcache) : -1);
}
if (PL_laststatval < 0) {
- dTHR;
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED))
report_evil_fh(gv, GvIO(gv), PL_op->op_type);
max = 0;
@@ -3113,7 +3219,6 @@ PP(pp_fttext)
len = 512;
}
else {
- dTHR;
if (ckWARN2(WARN_UNOPENED,WARN_CLOSED)) {
gv = cGVOP_gv;
report_evil_fh(gv, GvIO(gv), PL_op->op_type);
@@ -3138,7 +3243,7 @@ PP(pp_fttext)
(void)PerlIO_close(fp);
RETPUSHUNDEF;
}
- do_binmode(fp, '<', O_BINARY);
+ PerlIO_binmode(aTHX_ fp, '<', O_BINARY, Nullch);
len = PerlIO_read(fp, tbuf, sizeof(tbuf));
(void)PerlIO_close(fp);
if (len <= 0) {
@@ -3173,12 +3278,12 @@ PP(pp_fttext)
continue;
#endif
/* utf8 characters don't count as odd */
- if (*s & 0x40) {
+ if (UTF8_IS_START(*s)) {
int ulen = UTF8SKIP(s);
if (ulen < len - i) {
int j;
for (j = 1; j < ulen; j++) {
- if ((s[j] & 0xc0) != 0x80)
+ if (!UTF8_IS_CONTINUATION(s[j]))
goto not_utf8;
}
--ulen; /* loop does extra increment */
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