1985 lines
40 KiB
C
1985 lines
40 KiB
C
/* mg.c
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*
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* Copyright (c) 1991-1997, Larry Wall
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*
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*/
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/*
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* "Sam sat on the ground and put his head in his hands. 'I wish I had never
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* come here, and I don't want to see no more magic,' he said, and fell silent."
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*/
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#include "EXTERN.h"
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#include "perl.h"
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/* XXX If this causes problems, set i_unistd=undef in the hint file. */
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#ifdef I_UNISTD
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# include <unistd.h>
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#endif
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#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
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# ifndef NGROUPS
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# define NGROUPS 32
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# endif
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#endif
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/*
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* Use the "DESTRUCTOR" scope cleanup to reinstate magic.
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*/
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#ifdef PERL_OBJECT
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#define VTBL this->*vtbl
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#else
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struct magic_state {
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SV* mgs_sv;
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U32 mgs_flags;
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};
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typedef struct magic_state MGS;
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static void restore_magic _((void *p));
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#define VTBL *vtbl
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#endif
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STATIC void
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save_magic(MGS *mgs, SV *sv)
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{
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assert(SvMAGICAL(sv));
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mgs->mgs_sv = sv;
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mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv);
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SAVEDESTRUCTOR(restore_magic, mgs);
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SvMAGICAL_off(sv);
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SvREADONLY_off(sv);
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SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
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}
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STATIC void
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restore_magic(void *p)
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{
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MGS* mgs = (MGS*)p;
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SV* sv = mgs->mgs_sv;
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if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
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{
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if (mgs->mgs_flags)
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SvFLAGS(sv) |= mgs->mgs_flags;
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else
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mg_magical(sv);
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if (SvGMAGICAL(sv))
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SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
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}
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}
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void
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mg_magical(SV *sv)
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{
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MAGIC* mg;
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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MGVTBL* vtbl = mg->mg_virtual;
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if (vtbl) {
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if ((vtbl->svt_get != NULL) && !(mg->mg_flags & MGf_GSKIP))
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SvGMAGICAL_on(sv);
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if (vtbl->svt_set)
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SvSMAGICAL_on(sv);
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if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || (vtbl->svt_clear != NULL))
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SvRMAGICAL_on(sv);
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}
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}
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}
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int
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mg_get(SV *sv)
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{
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MGS mgs;
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MAGIC* mg;
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MAGIC** mgp;
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int mgp_valid = 0;
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ENTER;
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save_magic(&mgs, sv);
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mgp = &SvMAGIC(sv);
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while ((mg = *mgp) != 0) {
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MGVTBL* vtbl = mg->mg_virtual;
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if (!(mg->mg_flags & MGf_GSKIP) && vtbl && (vtbl->svt_get != NULL)) {
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(VTBL->svt_get)(sv, mg);
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/* Ignore this magic if it's been deleted */
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if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) &&
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(mg->mg_flags & MGf_GSKIP))
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mgs.mgs_flags = 0;
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}
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/* Advance to next magic (complicated by possible deletion) */
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if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) {
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mgp = &mg->mg_moremagic;
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mgp_valid = 1;
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}
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else
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mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */
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}
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LEAVE;
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return 0;
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}
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int
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mg_set(SV *sv)
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{
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MGS mgs;
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MAGIC* mg;
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MAGIC* nextmg;
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ENTER;
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save_magic(&mgs, sv);
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for (mg = SvMAGIC(sv); mg; mg = nextmg) {
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MGVTBL* vtbl = mg->mg_virtual;
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nextmg = mg->mg_moremagic; /* it may delete itself */
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if (mg->mg_flags & MGf_GSKIP) {
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mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */
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mgs.mgs_flags = 0;
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}
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if (vtbl && (vtbl->svt_set != NULL))
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(VTBL->svt_set)(sv, mg);
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}
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LEAVE;
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return 0;
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}
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U32
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mg_length(SV *sv)
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{
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MAGIC* mg;
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char *junk;
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STRLEN len;
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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MGVTBL* vtbl = mg->mg_virtual;
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if (vtbl && (vtbl->svt_len != NULL)) {
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MGS mgs;
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ENTER;
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save_magic(&mgs, sv);
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/* omit MGf_GSKIP -- not changed here */
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len = (VTBL->svt_len)(sv, mg);
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LEAVE;
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return len;
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}
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}
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junk = SvPV(sv, len);
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return len;
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}
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I32
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mg_size(SV *sv)
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{
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MAGIC* mg;
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I32 len;
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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MGVTBL* vtbl = mg->mg_virtual;
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if (vtbl && (vtbl->svt_len != NULL)) {
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MGS mgs;
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ENTER;
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/* omit MGf_GSKIP -- not changed here */
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len = (VTBL->svt_len)(sv, mg);
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LEAVE;
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return len;
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}
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}
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switch(SvTYPE(sv)) {
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case SVt_PVAV:
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len = AvFILLp((AV *) sv); /* Fallback to non-tied array */
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return len;
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case SVt_PVHV:
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/* FIXME */
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default:
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croak("Size magic not implemented");
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break;
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}
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return 0;
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}
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int
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mg_clear(SV *sv)
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{
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MGS mgs;
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MAGIC* mg;
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ENTER;
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save_magic(&mgs, sv);
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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MGVTBL* vtbl = mg->mg_virtual;
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/* omit GSKIP -- never set here */
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if (vtbl && (vtbl->svt_clear != NULL))
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(VTBL->svt_clear)(sv, mg);
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}
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LEAVE;
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return 0;
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}
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MAGIC*
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mg_find(SV *sv, int type)
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{
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MAGIC* mg;
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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if (mg->mg_type == type)
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return mg;
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}
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return 0;
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}
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int
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mg_copy(SV *sv, SV *nsv, char *key, I32 klen)
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{
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int count = 0;
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MAGIC* mg;
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for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) {
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if (isUPPER(mg->mg_type)) {
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sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen);
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count++;
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}
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}
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return count;
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}
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int
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mg_free(SV *sv)
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{
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MAGIC* mg;
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MAGIC* moremagic;
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for (mg = SvMAGIC(sv); mg; mg = moremagic) {
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MGVTBL* vtbl = mg->mg_virtual;
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moremagic = mg->mg_moremagic;
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if (vtbl && (vtbl->svt_free != NULL))
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(VTBL->svt_free)(sv, mg);
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if (mg->mg_ptr && mg->mg_type != 'g')
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if (mg->mg_len >= 0)
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Safefree(mg->mg_ptr);
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else if (mg->mg_len == HEf_SVKEY)
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SvREFCNT_dec((SV*)mg->mg_ptr);
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if (mg->mg_flags & MGf_REFCOUNTED)
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SvREFCNT_dec(mg->mg_obj);
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Safefree(mg);
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}
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SvMAGIC(sv) = 0;
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return 0;
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}
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#if !defined(NSIG) || defined(M_UNIX) || defined(M_XENIX)
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#include <signal.h>
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#endif
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U32
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magic_len(SV *sv, MAGIC *mg)
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{
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dTHR;
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register I32 paren;
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register char *s;
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register I32 i;
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register REGEXP *rx;
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char *t;
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switch (*mg->mg_ptr) {
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case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9': case '&':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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paren = atoi(mg->mg_ptr);
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getparen:
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if (paren <= rx->nparens &&
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(s = rx->startp[paren]) &&
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(t = rx->endp[paren]))
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{
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i = t - s;
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if (i >= 0)
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return i;
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}
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}
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return 0;
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case '+':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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paren = rx->lastparen;
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if (paren)
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goto getparen;
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}
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return 0;
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case '`':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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if ((s = rx->subbeg) && rx->startp[0]) {
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i = rx->startp[0] - s;
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if (i >= 0)
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return i;
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}
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}
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return 0;
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case '\'':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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if (rx->subend && (s = rx->endp[0])) {
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i = rx->subend - s;
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if (i >= 0)
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return i;
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}
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}
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return 0;
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case ',':
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return (STRLEN)PL_ofslen;
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case '\\':
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return (STRLEN)PL_orslen;
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}
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magic_get(sv,mg);
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if (!SvPOK(sv) && SvNIOK(sv))
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sv_2pv(sv, &PL_na);
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if (SvPOK(sv))
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return SvCUR(sv);
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return 0;
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}
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int
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magic_get(SV *sv, MAGIC *mg)
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{
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dTHR;
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register I32 paren;
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register char *s;
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register I32 i;
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register REGEXP *rx;
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char *t;
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switch (*mg->mg_ptr) {
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case '\001': /* ^A */
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sv_setsv(sv, PL_bodytarget);
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break;
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case '\004': /* ^D */
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sv_setiv(sv, (IV)(PL_debug & 32767));
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break;
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case '\005': /* ^E */
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#ifdef VMS
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{
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# include <descrip.h>
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# include <starlet.h>
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char msg[255];
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$DESCRIPTOR(msgdsc,msg);
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sv_setnv(sv,(double) vaxc$errno);
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if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1)
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sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length);
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else
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sv_setpv(sv,"");
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}
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#else
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#ifdef OS2
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if (!(_emx_env & 0x200)) { /* Under DOS */
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sv_setnv(sv, (double)errno);
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sv_setpv(sv, errno ? Strerror(errno) : "");
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} else {
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if (errno != errno_isOS2)
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Perl_rc = _syserrno();
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sv_setnv(sv, (double)Perl_rc);
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sv_setpv(sv, os2error(Perl_rc));
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}
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#else
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#ifdef WIN32
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{
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DWORD dwErr = GetLastError();
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sv_setnv(sv, (double)dwErr);
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if (dwErr)
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{
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#ifdef PERL_OBJECT
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char *sMsg;
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DWORD dwLen;
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PerlProc_GetSysMsg(sMsg, dwLen, dwErr);
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sv_setpvn(sv, sMsg, dwLen);
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PerlProc_FreeBuf(sMsg);
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#else
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win32_str_os_error(sv, dwErr);
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#endif
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}
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else
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sv_setpv(sv, "");
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SetLastError(dwErr);
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}
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#else
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sv_setnv(sv, (double)errno);
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sv_setpv(sv, errno ? Strerror(errno) : "");
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#endif
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#endif
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#endif
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SvNOK_on(sv); /* what a wonderful hack! */
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break;
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case '\006': /* ^F */
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sv_setiv(sv, (IV)PL_maxsysfd);
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break;
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case '\010': /* ^H */
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sv_setiv(sv, (IV)PL_hints);
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break;
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case '\011': /* ^I */ /* NOT \t in EBCDIC */
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if (PL_inplace)
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sv_setpv(sv, PL_inplace);
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else
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sv_setsv(sv, &PL_sv_undef);
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break;
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case '\017': /* ^O */
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sv_setpv(sv, PL_osname);
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break;
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case '\020': /* ^P */
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sv_setiv(sv, (IV)PL_perldb);
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break;
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case '\023': /* ^S */
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{
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dTHR;
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if (PL_lex_state != LEX_NOTPARSING)
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SvOK_off(sv);
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else if (PL_in_eval)
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sv_setiv(sv, 1);
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else
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sv_setiv(sv, 0);
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}
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break;
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case '\024': /* ^T */
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#ifdef BIG_TIME
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sv_setnv(sv, PL_basetime);
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#else
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sv_setiv(sv, (IV)PL_basetime);
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#endif
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break;
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case '\027': /* ^W */
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sv_setiv(sv, (IV)PL_dowarn);
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break;
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case '1': case '2': case '3': case '4':
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case '5': case '6': case '7': case '8': case '9': case '&':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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/*
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* Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj));
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* XXX Does the new way break anything?
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*/
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paren = atoi(mg->mg_ptr);
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getparen:
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if (paren <= rx->nparens &&
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(s = rx->startp[paren]) &&
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(t = rx->endp[paren]))
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{
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i = t - s;
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getrx:
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if (i >= 0) {
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bool was_tainted;
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if (PL_tainting) {
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was_tainted = PL_tainted;
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PL_tainted = FALSE;
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}
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sv_setpvn(sv,s,i);
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if (PL_tainting)
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PL_tainted = (was_tainted || RX_MATCH_TAINTED(rx));
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break;
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}
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}
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}
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sv_setsv(sv,&PL_sv_undef);
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break;
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case '+':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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paren = rx->lastparen;
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if (paren)
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goto getparen;
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}
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sv_setsv(sv,&PL_sv_undef);
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break;
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case '`':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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if ((s = rx->subbeg) && rx->startp[0]) {
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i = rx->startp[0] - s;
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goto getrx;
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}
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}
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sv_setsv(sv,&PL_sv_undef);
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break;
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case '\'':
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if (PL_curpm && (rx = PL_curpm->op_pmregexp)) {
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if (rx->subend && (s = rx->endp[0])) {
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i = rx->subend - s;
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goto getrx;
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}
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}
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sv_setsv(sv,&PL_sv_undef);
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break;
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case '.':
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#ifndef lint
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if (GvIO(PL_last_in_gv)) {
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sv_setiv(sv, (IV)IoLINES(GvIO(PL_last_in_gv)));
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}
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#endif
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break;
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case '?':
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{
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sv_setiv(sv, (IV)STATUS_CURRENT);
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#ifdef COMPLEX_STATUS
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LvTARGOFF(sv) = PL_statusvalue;
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LvTARGLEN(sv) = PL_statusvalue_vms;
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#endif
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}
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break;
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case '^':
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s = IoTOP_NAME(GvIOp(PL_defoutgv));
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if (s)
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sv_setpv(sv,s);
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else {
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sv_setpv(sv,GvENAME(PL_defoutgv));
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sv_catpv(sv,"_TOP");
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}
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break;
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case '~':
|
||
s = IoFMT_NAME(GvIOp(PL_defoutgv));
|
||
if (!s)
|
||
s = GvENAME(PL_defoutgv);
|
||
sv_setpv(sv,s);
|
||
break;
|
||
#ifndef lint
|
||
case '=':
|
||
sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(PL_defoutgv)));
|
||
break;
|
||
case '-':
|
||
sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(PL_defoutgv)));
|
||
break;
|
||
case '%':
|
||
sv_setiv(sv, (IV)IoPAGE(GvIOp(PL_defoutgv)));
|
||
break;
|
||
#endif
|
||
case ':':
|
||
break;
|
||
case '/':
|
||
break;
|
||
case '[':
|
||
WITH_THR(sv_setiv(sv, (IV)PL_curcop->cop_arybase));
|
||
break;
|
||
case '|':
|
||
sv_setiv(sv, (IV)(IoFLAGS(GvIOp(PL_defoutgv)) & IOf_FLUSH) != 0 );
|
||
break;
|
||
case ',':
|
||
sv_setpvn(sv,PL_ofs,PL_ofslen);
|
||
break;
|
||
case '\\':
|
||
sv_setpvn(sv,PL_ors,PL_orslen);
|
||
break;
|
||
case '#':
|
||
sv_setpv(sv,PL_ofmt);
|
||
break;
|
||
case '!':
|
||
#ifdef VMS
|
||
sv_setnv(sv, (double)((errno == EVMSERR) ? vaxc$errno : errno));
|
||
sv_setpv(sv, errno ? Strerror(errno) : "");
|
||
#else
|
||
{
|
||
int saveerrno = errno;
|
||
sv_setnv(sv, (double)errno);
|
||
#ifdef OS2
|
||
if (errno == errno_isOS2) sv_setpv(sv, os2error(Perl_rc));
|
||
else
|
||
#endif
|
||
sv_setpv(sv, errno ? Strerror(errno) : "");
|
||
errno = saveerrno;
|
||
}
|
||
#endif
|
||
SvNOK_on(sv); /* what a wonderful hack! */
|
||
break;
|
||
case '<':
|
||
sv_setiv(sv, (IV)PL_uid);
|
||
break;
|
||
case '>':
|
||
sv_setiv(sv, (IV)PL_euid);
|
||
break;
|
||
case '(':
|
||
sv_setiv(sv, (IV)PL_gid);
|
||
sv_setpvf(sv, "%Vd", (IV)PL_gid);
|
||
goto add_groups;
|
||
case ')':
|
||
sv_setiv(sv, (IV)PL_egid);
|
||
sv_setpvf(sv, "%Vd", (IV)PL_egid);
|
||
add_groups:
|
||
#ifdef HAS_GETGROUPS
|
||
{
|
||
Groups_t gary[NGROUPS];
|
||
i = getgroups(NGROUPS,gary);
|
||
while (--i >= 0)
|
||
sv_catpvf(sv, " %Vd", (IV)gary[i]);
|
||
}
|
||
#endif
|
||
SvIOK_on(sv); /* what a wonderful hack! */
|
||
break;
|
||
case '*':
|
||
break;
|
||
case '0':
|
||
break;
|
||
#ifdef USE_THREADS
|
||
case '@':
|
||
sv_setsv(sv, thr->errsv);
|
||
break;
|
||
#endif /* USE_THREADS */
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getuvar(SV *sv, MAGIC *mg)
|
||
{
|
||
struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
|
||
|
||
if (uf && uf->uf_val)
|
||
(*uf->uf_val)(uf->uf_index, sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setenv(SV *sv, MAGIC *mg)
|
||
{
|
||
register char *s;
|
||
char *ptr;
|
||
STRLEN len, klen;
|
||
I32 i;
|
||
|
||
s = SvPV(sv,len);
|
||
ptr = MgPV(mg,klen);
|
||
my_setenv(ptr, s);
|
||
|
||
#ifdef DYNAMIC_ENV_FETCH
|
||
/* We just undefd an environment var. Is a replacement */
|
||
/* waiting in the wings? */
|
||
if (!len) {
|
||
SV **valp;
|
||
if ((valp = hv_fetch(GvHVn(PL_envgv), ptr, klen, FALSE)))
|
||
s = SvPV(*valp, len);
|
||
}
|
||
#endif
|
||
|
||
#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32) && !defined(MSDOS)
|
||
/* And you'll never guess what the dog had */
|
||
/* in its mouth... */
|
||
if (PL_tainting) {
|
||
MgTAINTEDDIR_off(mg);
|
||
#ifdef VMS
|
||
if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) {
|
||
char pathbuf[256], eltbuf[256], *cp, *elt = s;
|
||
struct stat sbuf;
|
||
int i = 0, j = 0;
|
||
|
||
do { /* DCL$PATH may be a search list */
|
||
while (1) { /* as may dev portion of any element */
|
||
if ( ((cp = strchr(elt,'[')) || (cp = strchr(elt,'<'))) ) {
|
||
if ( *(cp+1) == '.' || *(cp+1) == '-' ||
|
||
cando_by_name(S_IWUSR,0,elt) ) {
|
||
MgTAINTEDDIR_on(mg);
|
||
return 0;
|
||
}
|
||
}
|
||
if ((cp = strchr(elt, ':')) != Nullch)
|
||
*cp = '\0';
|
||
if (my_trnlnm(elt, eltbuf, j++))
|
||
elt = eltbuf;
|
||
else
|
||
break;
|
||
}
|
||
j = 0;
|
||
} while (my_trnlnm(s, pathbuf, i++) && (elt = pathbuf));
|
||
}
|
||
#endif /* VMS */
|
||
if (s && klen == 4 && strEQ(ptr,"PATH")) {
|
||
char *strend = s + len;
|
||
|
||
while (s < strend) {
|
||
char tmpbuf[256];
|
||
struct stat st;
|
||
s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
|
||
s, strend, ':', &i);
|
||
s++;
|
||
if (i >= sizeof tmpbuf /* too long -- assume the worst */
|
||
|| *tmpbuf != '/'
|
||
|| (PerlLIO_stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
|
||
MgTAINTEDDIR_on(mg);
|
||
return 0;
|
||
}
|
||
}
|
||
}
|
||
}
|
||
#endif /* neither OS2 nor AMIGAOS nor WIN32 nor MSDOS */
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_clearenv(SV *sv, MAGIC *mg)
|
||
{
|
||
my_setenv(MgPV(mg,PL_na),Nullch);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_set_all_env(SV *sv, MAGIC *mg)
|
||
{
|
||
#if defined(VMS)
|
||
die("Can't make list assignment to %%ENV on this system");
|
||
#else
|
||
dTHR;
|
||
if (PL_localizing) {
|
||
HE* entry;
|
||
magic_clear_all_env(sv,mg);
|
||
hv_iterinit((HV*)sv);
|
||
while (entry = hv_iternext((HV*)sv)) {
|
||
I32 keylen;
|
||
my_setenv(hv_iterkey(entry, &keylen),
|
||
SvPV(hv_iterval((HV*)sv, entry), PL_na));
|
||
}
|
||
}
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_clear_all_env(SV *sv, MAGIC *mg)
|
||
{
|
||
#if defined(VMS)
|
||
die("Can't make list assignment to %%ENV on this system");
|
||
#else
|
||
#ifdef WIN32
|
||
char *envv = GetEnvironmentStrings();
|
||
char *cur = envv;
|
||
STRLEN len;
|
||
while (*cur) {
|
||
char *end = strchr(cur,'=');
|
||
if (end && end != cur) {
|
||
*end = '\0';
|
||
my_setenv(cur,Nullch);
|
||
*end = '=';
|
||
cur += strlen(end+1)+1;
|
||
}
|
||
else if ((len = strlen(cur)))
|
||
cur += len+1;
|
||
}
|
||
FreeEnvironmentStrings(envv);
|
||
#else
|
||
I32 i;
|
||
|
||
if (environ == PL_origenviron)
|
||
New(901, environ, 1, char*);
|
||
else
|
||
for (i = 0; environ[i]; i++)
|
||
Safefree(environ[i]);
|
||
environ[0] = Nullch;
|
||
|
||
#endif
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getsig(SV *sv, MAGIC *mg)
|
||
{
|
||
I32 i;
|
||
/* Are we fetching a signal entry? */
|
||
i = whichsig(MgPV(mg,PL_na));
|
||
if (i) {
|
||
if(psig_ptr[i])
|
||
sv_setsv(sv,psig_ptr[i]);
|
||
else {
|
||
Sighandler_t sigstate = rsignal_state(i);
|
||
|
||
/* cache state so we don't fetch it again */
|
||
if(sigstate == SIG_IGN)
|
||
sv_setpv(sv,"IGNORE");
|
||
else
|
||
sv_setsv(sv,&PL_sv_undef);
|
||
psig_ptr[i] = SvREFCNT_inc(sv);
|
||
SvTEMP_off(sv);
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
int
|
||
magic_clearsig(SV *sv, MAGIC *mg)
|
||
{
|
||
I32 i;
|
||
/* Are we clearing a signal entry? */
|
||
i = whichsig(MgPV(mg,PL_na));
|
||
if (i) {
|
||
if(psig_ptr[i]) {
|
||
SvREFCNT_dec(psig_ptr[i]);
|
||
psig_ptr[i]=0;
|
||
}
|
||
if(psig_name[i]) {
|
||
SvREFCNT_dec(psig_name[i]);
|
||
psig_name[i]=0;
|
||
}
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setsig(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
register char *s;
|
||
I32 i;
|
||
SV** svp;
|
||
|
||
s = MgPV(mg,PL_na);
|
||
if (*s == '_') {
|
||
if (strEQ(s,"__DIE__"))
|
||
svp = &PL_diehook;
|
||
else if (strEQ(s,"__WARN__"))
|
||
svp = &PL_warnhook;
|
||
else if (strEQ(s,"__PARSE__"))
|
||
svp = &PL_parsehook;
|
||
else
|
||
croak("No such hook: %s", s);
|
||
i = 0;
|
||
if (*svp) {
|
||
SvREFCNT_dec(*svp);
|
||
*svp = 0;
|
||
}
|
||
}
|
||
else {
|
||
i = whichsig(s); /* ...no, a brick */
|
||
if (!i) {
|
||
if (PL_dowarn || strEQ(s,"ALARM"))
|
||
warn("No such signal: SIG%s", s);
|
||
return 0;
|
||
}
|
||
SvREFCNT_dec(psig_name[i]);
|
||
SvREFCNT_dec(psig_ptr[i]);
|
||
psig_ptr[i] = SvREFCNT_inc(sv);
|
||
SvTEMP_off(sv); /* Make sure it doesn't go away on us */
|
||
psig_name[i] = newSVpv(s, strlen(s));
|
||
SvREADONLY_on(psig_name[i]);
|
||
}
|
||
if (SvTYPE(sv) == SVt_PVGV || SvROK(sv)) {
|
||
if (i)
|
||
(void)rsignal(i, PL_sighandlerp);
|
||
else
|
||
*svp = SvREFCNT_inc(sv);
|
||
return 0;
|
||
}
|
||
s = SvPV_force(sv,PL_na);
|
||
if (strEQ(s,"IGNORE")) {
|
||
if (i)
|
||
(void)rsignal(i, SIG_IGN);
|
||
else
|
||
*svp = 0;
|
||
}
|
||
else if (strEQ(s,"DEFAULT") || !*s) {
|
||
if (i)
|
||
(void)rsignal(i, SIG_DFL);
|
||
else
|
||
*svp = 0;
|
||
}
|
||
else {
|
||
/*
|
||
* We should warn if HINT_STRICT_REFS, but without
|
||
* access to a known hint bit in a known OP, we can't
|
||
* tell whether HINT_STRICT_REFS is in force or not.
|
||
*/
|
||
if (!strchr(s,':') && !strchr(s,'\''))
|
||
sv_setpv(sv, form("main::%s", s));
|
||
if (i)
|
||
(void)rsignal(i, PL_sighandlerp);
|
||
else
|
||
*svp = SvREFCNT_inc(sv);
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setisa(SV *sv, MAGIC *mg)
|
||
{
|
||
PL_sub_generation++;
|
||
return 0;
|
||
}
|
||
|
||
#ifdef OVERLOAD
|
||
|
||
int
|
||
magic_setamagic(SV *sv, MAGIC *mg)
|
||
{
|
||
/* HV_badAMAGIC_on(Sv_STASH(sv)); */
|
||
PL_amagic_generation++;
|
||
|
||
return 0;
|
||
}
|
||
#endif /* OVERLOAD */
|
||
|
||
int
|
||
magic_getnkeys(SV *sv, MAGIC *mg)
|
||
{
|
||
HV *hv = (HV*)LvTARG(sv);
|
||
HE *entry;
|
||
I32 i = 0;
|
||
|
||
if (hv) {
|
||
(void) hv_iterinit(hv);
|
||
if (!SvRMAGICAL(hv) || !mg_find((SV*)hv,'P'))
|
||
i = HvKEYS(hv);
|
||
else {
|
||
/*SUPPRESS 560*/
|
||
while (entry = hv_iternext(hv)) {
|
||
i++;
|
||
}
|
||
}
|
||
}
|
||
|
||
sv_setiv(sv, (IV)i);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setnkeys(SV *sv, MAGIC *mg)
|
||
{
|
||
if (LvTARG(sv)) {
|
||
hv_ksplit((HV*)LvTARG(sv), SvIV(sv));
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
/* caller is responsible for stack switching/cleanup */
|
||
STATIC int
|
||
magic_methcall(MAGIC *mg, char *meth, I32 flags, int n, SV *val)
|
||
{
|
||
dSP;
|
||
|
||
PUSHMARK(SP);
|
||
EXTEND(SP, n);
|
||
PUSHs(mg->mg_obj);
|
||
if (n > 1) {
|
||
if (mg->mg_ptr) {
|
||
if (mg->mg_len >= 0)
|
||
PUSHs(sv_2mortal(newSVpv(mg->mg_ptr, mg->mg_len)));
|
||
else if (mg->mg_len == HEf_SVKEY)
|
||
PUSHs((SV*)mg->mg_ptr);
|
||
}
|
||
else if (mg->mg_type == 'p') {
|
||
PUSHs(sv_2mortal(newSViv(mg->mg_len)));
|
||
}
|
||
}
|
||
if (n > 2) {
|
||
PUSHs(val);
|
||
}
|
||
PUTBACK;
|
||
|
||
return perl_call_method(meth, flags);
|
||
}
|
||
|
||
STATIC int
|
||
magic_methpack(SV *sv, MAGIC *mg, char *meth)
|
||
{
|
||
dSP;
|
||
|
||
ENTER;
|
||
SAVETMPS;
|
||
PUSHSTACKi(PERLSI_MAGIC);
|
||
|
||
if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) {
|
||
sv_setsv(sv, *PL_stack_sp--);
|
||
}
|
||
|
||
POPSTACK;
|
||
FREETMPS;
|
||
LEAVE;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getpack(SV *sv, MAGIC *mg)
|
||
{
|
||
magic_methpack(sv,mg,"FETCH");
|
||
if (mg->mg_ptr)
|
||
mg->mg_flags |= MGf_GSKIP;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setpack(SV *sv, MAGIC *mg)
|
||
{
|
||
dSP;
|
||
ENTER;
|
||
PUSHSTACKi(PERLSI_MAGIC);
|
||
magic_methcall(mg, "STORE", G_SCALAR|G_DISCARD, 3, sv);
|
||
POPSTACK;
|
||
LEAVE;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_clearpack(SV *sv, MAGIC *mg)
|
||
{
|
||
return magic_methpack(sv,mg,"DELETE");
|
||
}
|
||
|
||
|
||
U32
|
||
magic_sizepack(SV *sv, MAGIC *mg)
|
||
{
|
||
dSP;
|
||
U32 retval = 0;
|
||
|
||
ENTER;
|
||
SAVETMPS;
|
||
PUSHSTACKi(PERLSI_MAGIC);
|
||
if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) {
|
||
sv = *PL_stack_sp--;
|
||
retval = (U32) SvIV(sv)-1;
|
||
}
|
||
POPSTACK;
|
||
FREETMPS;
|
||
LEAVE;
|
||
return retval;
|
||
}
|
||
|
||
int magic_wipepack(SV *sv, MAGIC *mg)
|
||
{
|
||
dSP;
|
||
|
||
ENTER;
|
||
PUSHSTACKi(PERLSI_MAGIC);
|
||
PUSHMARK(SP);
|
||
XPUSHs(mg->mg_obj);
|
||
PUTBACK;
|
||
perl_call_method("CLEAR", G_SCALAR|G_DISCARD);
|
||
POPSTACK;
|
||
LEAVE;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_nextpack(SV *sv, MAGIC *mg, SV *key)
|
||
{
|
||
dSP;
|
||
char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
|
||
|
||
ENTER;
|
||
SAVETMPS;
|
||
PUSHSTACKi(PERLSI_MAGIC);
|
||
PUSHMARK(SP);
|
||
EXTEND(SP, 2);
|
||
PUSHs(mg->mg_obj);
|
||
if (SvOK(key))
|
||
PUSHs(key);
|
||
PUTBACK;
|
||
|
||
if (perl_call_method(meth, G_SCALAR))
|
||
sv_setsv(key, *PL_stack_sp--);
|
||
|
||
POPSTACK;
|
||
FREETMPS;
|
||
LEAVE;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_existspack(SV *sv, MAGIC *mg)
|
||
{
|
||
return magic_methpack(sv,mg,"EXISTS");
|
||
}
|
||
|
||
int
|
||
magic_setdbline(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
OP *o;
|
||
I32 i;
|
||
GV* gv;
|
||
SV** svp;
|
||
|
||
gv = PL_DBline;
|
||
i = SvTRUE(sv);
|
||
svp = av_fetch(GvAV(gv),
|
||
atoi(MgPV(mg,PL_na)), FALSE);
|
||
if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
|
||
o->op_private = i;
|
||
else
|
||
warn("Can't break at that line\n");
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getarylen(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + PL_curcop->cop_arybase);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setarylen(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
av_fill((AV*)mg->mg_obj, SvIV(sv) - PL_curcop->cop_arybase);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getpos(SV *sv, MAGIC *mg)
|
||
{
|
||
SV* lsv = LvTARG(sv);
|
||
|
||
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv)) {
|
||
mg = mg_find(lsv, 'g');
|
||
if (mg && mg->mg_len >= 0) {
|
||
dTHR;
|
||
sv_setiv(sv, mg->mg_len + PL_curcop->cop_arybase);
|
||
return 0;
|
||
}
|
||
}
|
||
(void)SvOK_off(sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setpos(SV *sv, MAGIC *mg)
|
||
{
|
||
SV* lsv = LvTARG(sv);
|
||
SSize_t pos;
|
||
STRLEN len;
|
||
|
||
mg = 0;
|
||
|
||
if (SvTYPE(lsv) >= SVt_PVMG && SvMAGIC(lsv))
|
||
mg = mg_find(lsv, 'g');
|
||
if (!mg) {
|
||
if (!SvOK(sv))
|
||
return 0;
|
||
sv_magic(lsv, (SV*)0, 'g', Nullch, 0);
|
||
mg = mg_find(lsv, 'g');
|
||
}
|
||
else if (!SvOK(sv)) {
|
||
mg->mg_len = -1;
|
||
return 0;
|
||
}
|
||
len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
|
||
|
||
WITH_THR(pos = SvIV(sv) - PL_curcop->cop_arybase);
|
||
if (pos < 0) {
|
||
pos += len;
|
||
if (pos < 0)
|
||
pos = 0;
|
||
}
|
||
else if (pos > len)
|
||
pos = len;
|
||
mg->mg_len = pos;
|
||
mg->mg_flags &= ~MGf_MINMATCH;
|
||
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getglob(SV *sv, MAGIC *mg)
|
||
{
|
||
if (SvFAKE(sv)) { /* FAKE globs can get coerced */
|
||
SvFAKE_off(sv);
|
||
gv_efullname3(sv,((GV*)sv), "*");
|
||
SvFAKE_on(sv);
|
||
}
|
||
else
|
||
gv_efullname3(sv,((GV*)sv), "*"); /* a gv value, be nice */
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setglob(SV *sv, MAGIC *mg)
|
||
{
|
||
register char *s;
|
||
GV* gv;
|
||
|
||
if (!SvOK(sv))
|
||
return 0;
|
||
s = SvPV(sv, PL_na);
|
||
if (*s == '*' && s[1])
|
||
s++;
|
||
gv = gv_fetchpv(s,TRUE, SVt_PVGV);
|
||
if (sv == (SV*)gv)
|
||
return 0;
|
||
if (GvGP(sv))
|
||
gp_free((GV*)sv);
|
||
GvGP(sv) = gp_ref(GvGP(gv));
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getsubstr(SV *sv, MAGIC *mg)
|
||
{
|
||
STRLEN len;
|
||
SV *lsv = LvTARG(sv);
|
||
char *tmps = SvPV(lsv,len);
|
||
I32 offs = LvTARGOFF(sv);
|
||
I32 rem = LvTARGLEN(sv);
|
||
|
||
if (offs > len)
|
||
offs = len;
|
||
if (rem + offs > len)
|
||
rem = len - offs;
|
||
sv_setpvn(sv, tmps + offs, (STRLEN)rem);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setsubstr(SV *sv, MAGIC *mg)
|
||
{
|
||
STRLEN len;
|
||
char *tmps = SvPV(sv,len);
|
||
sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_gettaint(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
TAINT_IF((mg->mg_len & 1) ||
|
||
(mg->mg_len & 2) && mg->mg_obj == sv); /* kludge */
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_settaint(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
if (PL_localizing) {
|
||
if (PL_localizing == 1)
|
||
mg->mg_len <<= 1;
|
||
else
|
||
mg->mg_len >>= 1;
|
||
}
|
||
else if (PL_tainted)
|
||
mg->mg_len |= 1;
|
||
else
|
||
mg->mg_len &= ~1;
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getvec(SV *sv, MAGIC *mg)
|
||
{
|
||
SV *lsv = LvTARG(sv);
|
||
unsigned char *s;
|
||
unsigned long retnum;
|
||
STRLEN lsvlen;
|
||
I32 len;
|
||
I32 offset;
|
||
I32 size;
|
||
|
||
if (!lsv) {
|
||
SvOK_off(sv);
|
||
return 0;
|
||
}
|
||
s = (unsigned char *) SvPV(lsv, lsvlen);
|
||
offset = LvTARGOFF(sv);
|
||
size = LvTARGLEN(sv);
|
||
len = (offset + size + 7) / 8;
|
||
|
||
/* Copied from pp_vec() */
|
||
|
||
if (len > lsvlen) {
|
||
if (size <= 8)
|
||
retnum = 0;
|
||
else {
|
||
offset >>= 3;
|
||
if (size == 16) {
|
||
if (offset >= lsvlen)
|
||
retnum = 0;
|
||
else
|
||
retnum = (unsigned long) s[offset] << 8;
|
||
}
|
||
else if (size == 32) {
|
||
if (offset >= lsvlen)
|
||
retnum = 0;
|
||
else if (offset + 1 >= lsvlen)
|
||
retnum = (unsigned long) s[offset] << 24;
|
||
else if (offset + 2 >= lsvlen)
|
||
retnum = ((unsigned long) s[offset] << 24) +
|
||
((unsigned long) s[offset + 1] << 16);
|
||
else
|
||
retnum = ((unsigned long) s[offset] << 24) +
|
||
((unsigned long) s[offset + 1] << 16) +
|
||
(s[offset + 2] << 8);
|
||
}
|
||
}
|
||
}
|
||
else if (size < 8)
|
||
retnum = (s[offset >> 3] >> (offset & 7)) & ((1 << size) - 1);
|
||
else {
|
||
offset >>= 3;
|
||
if (size == 8)
|
||
retnum = s[offset];
|
||
else if (size == 16)
|
||
retnum = ((unsigned long) s[offset] << 8) + s[offset+1];
|
||
else if (size == 32)
|
||
retnum = ((unsigned long) s[offset] << 24) +
|
||
((unsigned long) s[offset + 1] << 16) +
|
||
(s[offset + 2] << 8) + s[offset+3];
|
||
}
|
||
|
||
sv_setuv(sv, (UV)retnum);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setvec(SV *sv, MAGIC *mg)
|
||
{
|
||
do_vecset(sv); /* XXX slurp this routine */
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_getdefelem(SV *sv, MAGIC *mg)
|
||
{
|
||
SV *targ = Nullsv;
|
||
if (LvTARGLEN(sv)) {
|
||
if (mg->mg_obj) {
|
||
SV *ahv = LvTARG(sv);
|
||
if (SvTYPE(ahv) == SVt_PVHV) {
|
||
HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, FALSE, 0);
|
||
if (he)
|
||
targ = HeVAL(he);
|
||
}
|
||
else {
|
||
SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, FALSE, 0);
|
||
if (svp)
|
||
targ = *svp;
|
||
}
|
||
}
|
||
else {
|
||
AV* av = (AV*)LvTARG(sv);
|
||
if ((I32)LvTARGOFF(sv) <= AvFILL(av))
|
||
targ = AvARRAY(av)[LvTARGOFF(sv)];
|
||
}
|
||
if (targ && targ != &PL_sv_undef) {
|
||
dTHR; /* just for SvREFCNT_dec */
|
||
/* somebody else defined it for us */
|
||
SvREFCNT_dec(LvTARG(sv));
|
||
LvTARG(sv) = SvREFCNT_inc(targ);
|
||
LvTARGLEN(sv) = 0;
|
||
SvREFCNT_dec(mg->mg_obj);
|
||
mg->mg_obj = Nullsv;
|
||
mg->mg_flags &= ~MGf_REFCOUNTED;
|
||
}
|
||
}
|
||
else
|
||
targ = LvTARG(sv);
|
||
sv_setsv(sv, targ ? targ : &PL_sv_undef);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setdefelem(SV *sv, MAGIC *mg)
|
||
{
|
||
if (LvTARGLEN(sv))
|
||
vivify_defelem(sv);
|
||
if (LvTARG(sv)) {
|
||
sv_setsv(LvTARG(sv), sv);
|
||
SvSETMAGIC(LvTARG(sv));
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
void
|
||
vivify_defelem(SV *sv)
|
||
{
|
||
dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
|
||
MAGIC *mg;
|
||
SV *value = Nullsv;
|
||
|
||
if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
|
||
return;
|
||
if (mg->mg_obj) {
|
||
SV *ahv = LvTARG(sv);
|
||
if (SvTYPE(ahv) == SVt_PVHV) {
|
||
HE *he = hv_fetch_ent((HV*)ahv, mg->mg_obj, TRUE, 0);
|
||
if (he)
|
||
value = HeVAL(he);
|
||
}
|
||
else {
|
||
SV **svp = avhv_fetch_ent((AV*)ahv, mg->mg_obj, TRUE, 0);
|
||
if (svp)
|
||
value = *svp;
|
||
}
|
||
if (!value || value == &PL_sv_undef)
|
||
croak(no_helem, SvPV(mg->mg_obj, PL_na));
|
||
}
|
||
else {
|
||
AV* av = (AV*)LvTARG(sv);
|
||
if ((I32)LvTARGLEN(sv) < 0 && (I32)LvTARGOFF(sv) > AvFILL(av))
|
||
LvTARG(sv) = Nullsv; /* array can't be extended */
|
||
else {
|
||
SV** svp = av_fetch(av, LvTARGOFF(sv), TRUE);
|
||
if (!svp || (value = *svp) == &PL_sv_undef)
|
||
croak(no_aelem, (I32)LvTARGOFF(sv));
|
||
}
|
||
}
|
||
(void)SvREFCNT_inc(value);
|
||
SvREFCNT_dec(LvTARG(sv));
|
||
LvTARG(sv) = value;
|
||
LvTARGLEN(sv) = 0;
|
||
SvREFCNT_dec(mg->mg_obj);
|
||
mg->mg_obj = Nullsv;
|
||
mg->mg_flags &= ~MGf_REFCOUNTED;
|
||
}
|
||
|
||
int
|
||
magic_setmglob(SV *sv, MAGIC *mg)
|
||
{
|
||
mg->mg_len = -1;
|
||
SvSCREAM_off(sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setbm(SV *sv, MAGIC *mg)
|
||
{
|
||
sv_unmagic(sv, 'B');
|
||
SvVALID_off(sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setfm(SV *sv, MAGIC *mg)
|
||
{
|
||
sv_unmagic(sv, 'f');
|
||
SvCOMPILED_off(sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_setuvar(SV *sv, MAGIC *mg)
|
||
{
|
||
struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr;
|
||
|
||
if (uf && uf->uf_set)
|
||
(*uf->uf_set)(uf->uf_index, sv);
|
||
return 0;
|
||
}
|
||
|
||
int
|
||
magic_freeregexp(SV *sv, MAGIC *mg)
|
||
{
|
||
regexp *re = (regexp *)mg->mg_obj;
|
||
ReREFCNT_dec(re);
|
||
return 0;
|
||
}
|
||
|
||
#ifdef USE_LOCALE_COLLATE
|
||
int
|
||
magic_setcollxfrm(SV *sv, MAGIC *mg)
|
||
{
|
||
/*
|
||
* Ren<65> Descartes said "I think not."
|
||
* and vanished with a faint plop.
|
||
*/
|
||
if (mg->mg_ptr) {
|
||
Safefree(mg->mg_ptr);
|
||
mg->mg_ptr = NULL;
|
||
mg->mg_len = -1;
|
||
}
|
||
return 0;
|
||
}
|
||
#endif /* USE_LOCALE_COLLATE */
|
||
|
||
int
|
||
magic_set(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
register char *s;
|
||
I32 i;
|
||
STRLEN len;
|
||
switch (*mg->mg_ptr) {
|
||
case '\001': /* ^A */
|
||
sv_setsv(PL_bodytarget, sv);
|
||
break;
|
||
case '\004': /* ^D */
|
||
PL_debug = (SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) | 0x80000000;
|
||
DEBUG_x(dump_all());
|
||
break;
|
||
case '\005': /* ^E */
|
||
#ifdef VMS
|
||
set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
#else
|
||
#ifdef WIN32
|
||
SetLastError( SvIV(sv) );
|
||
#else
|
||
/* will anyone ever use this? */
|
||
SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
|
||
#endif
|
||
#endif
|
||
break;
|
||
case '\006': /* ^F */
|
||
PL_maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
break;
|
||
case '\010': /* ^H */
|
||
PL_hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
break;
|
||
case '\011': /* ^I */ /* NOT \t in EBCDIC */
|
||
if (PL_inplace)
|
||
Safefree(PL_inplace);
|
||
if (SvOK(sv))
|
||
PL_inplace = savepv(SvPV(sv,PL_na));
|
||
else
|
||
PL_inplace = Nullch;
|
||
break;
|
||
case '\017': /* ^O */
|
||
if (PL_osname)
|
||
Safefree(PL_osname);
|
||
if (SvOK(sv))
|
||
PL_osname = savepv(SvPV(sv,PL_na));
|
||
else
|
||
PL_osname = Nullch;
|
||
break;
|
||
case '\020': /* ^P */
|
||
PL_perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
break;
|
||
case '\024': /* ^T */
|
||
#ifdef BIG_TIME
|
||
PL_basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv));
|
||
#else
|
||
PL_basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
#endif
|
||
break;
|
||
case '\027': /* ^W */
|
||
PL_dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
break;
|
||
case '.':
|
||
if (PL_localizing) {
|
||
if (PL_localizing == 1)
|
||
save_sptr((SV**)&PL_last_in_gv);
|
||
}
|
||
else if (SvOK(sv) && GvIO(PL_last_in_gv))
|
||
IoLINES(GvIOp(PL_last_in_gv)) = (long)SvIV(sv);
|
||
break;
|
||
case '^':
|
||
Safefree(IoTOP_NAME(GvIOp(PL_defoutgv)));
|
||
IoTOP_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
|
||
IoTOP_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
|
||
break;
|
||
case '~':
|
||
Safefree(IoFMT_NAME(GvIOp(PL_defoutgv)));
|
||
IoFMT_NAME(GvIOp(PL_defoutgv)) = s = savepv(SvPV(sv,PL_na));
|
||
IoFMT_GV(GvIOp(PL_defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO);
|
||
break;
|
||
case '=':
|
||
IoPAGE_LEN(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
break;
|
||
case '-':
|
||
IoLINES_LEFT(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
if (IoLINES_LEFT(GvIOp(PL_defoutgv)) < 0L)
|
||
IoLINES_LEFT(GvIOp(PL_defoutgv)) = 0L;
|
||
break;
|
||
case '%':
|
||
IoPAGE(GvIOp(PL_defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
break;
|
||
case '|':
|
||
{
|
||
IO *io = GvIOp(PL_defoutgv);
|
||
if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) == 0)
|
||
IoFLAGS(io) &= ~IOf_FLUSH;
|
||
else {
|
||
if (!(IoFLAGS(io) & IOf_FLUSH)) {
|
||
PerlIO *ofp = IoOFP(io);
|
||
if (ofp)
|
||
(void)PerlIO_flush(ofp);
|
||
IoFLAGS(io) |= IOf_FLUSH;
|
||
}
|
||
}
|
||
}
|
||
break;
|
||
case '*':
|
||
i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
PL_multiline = (i != 0);
|
||
break;
|
||
case '/':
|
||
SvREFCNT_dec(PL_nrs);
|
||
PL_nrs = newSVsv(sv);
|
||
SvREFCNT_dec(PL_rs);
|
||
PL_rs = SvREFCNT_inc(PL_nrs);
|
||
break;
|
||
case '\\':
|
||
if (PL_ors)
|
||
Safefree(PL_ors);
|
||
if (SvOK(sv) || SvGMAGICAL(sv))
|
||
PL_ors = savepv(SvPV(sv,PL_orslen));
|
||
else {
|
||
PL_ors = Nullch;
|
||
PL_orslen = 0;
|
||
}
|
||
break;
|
||
case ',':
|
||
if (PL_ofs)
|
||
Safefree(PL_ofs);
|
||
PL_ofs = savepv(SvPV(sv, PL_ofslen));
|
||
break;
|
||
case '#':
|
||
if (PL_ofmt)
|
||
Safefree(PL_ofmt);
|
||
PL_ofmt = savepv(SvPV(sv,PL_na));
|
||
break;
|
||
case '[':
|
||
PL_compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
break;
|
||
case '?':
|
||
#ifdef COMPLEX_STATUS
|
||
if (PL_localizing == 2) {
|
||
PL_statusvalue = LvTARGOFF(sv);
|
||
PL_statusvalue_vms = LvTARGLEN(sv);
|
||
}
|
||
else
|
||
#endif
|
||
#ifdef VMSISH_STATUS
|
||
if (VMSISH_STATUS)
|
||
STATUS_NATIVE_SET((U32)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)));
|
||
else
|
||
#endif
|
||
STATUS_POSIX_SET(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
|
||
break;
|
||
case '!':
|
||
SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0,
|
||
(SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
|
||
break;
|
||
case '<':
|
||
PL_uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
if (PL_delaymagic) {
|
||
PL_delaymagic |= DM_RUID;
|
||
break; /* don't do magic till later */
|
||
}
|
||
#ifdef HAS_SETRUID
|
||
(void)setruid((Uid_t)PL_uid);
|
||
#else
|
||
#ifdef HAS_SETREUID
|
||
(void)setreuid((Uid_t)PL_uid, (Uid_t)-1);
|
||
#else
|
||
#ifdef HAS_SETRESUID
|
||
(void)setresuid((Uid_t)PL_uid, (Uid_t)-1, (Uid_t)-1);
|
||
#else
|
||
if (PL_uid == PL_euid) /* special case $< = $> */
|
||
(void)PerlProc_setuid(PL_uid);
|
||
else {
|
||
PL_uid = (I32)PerlProc_getuid();
|
||
croak("setruid() not implemented");
|
||
}
|
||
#endif
|
||
#endif
|
||
#endif
|
||
PL_uid = (I32)PerlProc_getuid();
|
||
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
|
||
break;
|
||
case '>':
|
||
PL_euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
if (PL_delaymagic) {
|
||
PL_delaymagic |= DM_EUID;
|
||
break; /* don't do magic till later */
|
||
}
|
||
#ifdef HAS_SETEUID
|
||
(void)seteuid((Uid_t)PL_euid);
|
||
#else
|
||
#ifdef HAS_SETREUID
|
||
(void)setreuid((Uid_t)-1, (Uid_t)PL_euid);
|
||
#else
|
||
#ifdef HAS_SETRESUID
|
||
(void)setresuid((Uid_t)-1, (Uid_t)PL_euid, (Uid_t)-1);
|
||
#else
|
||
if (PL_euid == PL_uid) /* special case $> = $< */
|
||
PerlProc_setuid(PL_euid);
|
||
else {
|
||
PL_euid = (I32)PerlProc_geteuid();
|
||
croak("seteuid() not implemented");
|
||
}
|
||
#endif
|
||
#endif
|
||
#endif
|
||
PL_euid = (I32)PerlProc_geteuid();
|
||
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
|
||
break;
|
||
case '(':
|
||
PL_gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
if (PL_delaymagic) {
|
||
PL_delaymagic |= DM_RGID;
|
||
break; /* don't do magic till later */
|
||
}
|
||
#ifdef HAS_SETRGID
|
||
(void)setrgid((Gid_t)PL_gid);
|
||
#else
|
||
#ifdef HAS_SETREGID
|
||
(void)setregid((Gid_t)PL_gid, (Gid_t)-1);
|
||
#else
|
||
#ifdef HAS_SETRESGID
|
||
(void)setresgid((Gid_t)PL_gid, (Gid_t)-1, (Gid_t) 1);
|
||
#else
|
||
if (PL_gid == PL_egid) /* special case $( = $) */
|
||
(void)PerlProc_setgid(PL_gid);
|
||
else {
|
||
PL_gid = (I32)PerlProc_getgid();
|
||
croak("setrgid() not implemented");
|
||
}
|
||
#endif
|
||
#endif
|
||
#endif
|
||
PL_gid = (I32)PerlProc_getgid();
|
||
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
|
||
break;
|
||
case ')':
|
||
#ifdef HAS_SETGROUPS
|
||
{
|
||
char *p = SvPV(sv, PL_na);
|
||
Groups_t gary[NGROUPS];
|
||
|
||
SET_NUMERIC_STANDARD();
|
||
while (isSPACE(*p))
|
||
++p;
|
||
PL_egid = I_V(atof(p));
|
||
for (i = 0; i < NGROUPS; ++i) {
|
||
while (*p && !isSPACE(*p))
|
||
++p;
|
||
while (isSPACE(*p))
|
||
++p;
|
||
if (!*p)
|
||
break;
|
||
gary[i] = I_V(atof(p));
|
||
}
|
||
if (i)
|
||
(void)setgroups(i, gary);
|
||
}
|
||
#else /* HAS_SETGROUPS */
|
||
PL_egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
|
||
#endif /* HAS_SETGROUPS */
|
||
if (PL_delaymagic) {
|
||
PL_delaymagic |= DM_EGID;
|
||
break; /* don't do magic till later */
|
||
}
|
||
#ifdef HAS_SETEGID
|
||
(void)setegid((Gid_t)PL_egid);
|
||
#else
|
||
#ifdef HAS_SETREGID
|
||
(void)setregid((Gid_t)-1, (Gid_t)PL_egid);
|
||
#else
|
||
#ifdef HAS_SETRESGID
|
||
(void)setresgid((Gid_t)-1, (Gid_t)PL_egid, (Gid_t)-1);
|
||
#else
|
||
if (PL_egid == PL_gid) /* special case $) = $( */
|
||
(void)PerlProc_setgid(PL_egid);
|
||
else {
|
||
PL_egid = (I32)PerlProc_getegid();
|
||
croak("setegid() not implemented");
|
||
}
|
||
#endif
|
||
#endif
|
||
#endif
|
||
PL_egid = (I32)PerlProc_getegid();
|
||
PL_tainting |= (PL_uid && (PL_euid != PL_uid || PL_egid != PL_gid));
|
||
break;
|
||
case ':':
|
||
PL_chopset = SvPV_force(sv,PL_na);
|
||
break;
|
||
case '0':
|
||
if (!PL_origalen) {
|
||
s = PL_origargv[0];
|
||
s += strlen(s);
|
||
/* See if all the arguments are contiguous in memory */
|
||
for (i = 1; i < PL_origargc; i++) {
|
||
if (PL_origargv[i] == s + 1
|
||
#ifdef OS2
|
||
|| PL_origargv[i] == s + 2
|
||
#endif
|
||
)
|
||
s += strlen(++s); /* this one is ok too */
|
||
else
|
||
break;
|
||
}
|
||
/* can grab env area too? */
|
||
if (PL_origenviron && (PL_origenviron[0] == s + 1
|
||
#ifdef OS2
|
||
|| (PL_origenviron[0] == s + 9 && (s += 8))
|
||
#endif
|
||
)) {
|
||
my_setenv("NoNe SuCh", Nullch);
|
||
/* force copy of environment */
|
||
for (i = 0; PL_origenviron[i]; i++)
|
||
if (PL_origenviron[i] == s + 1)
|
||
s += strlen(++s);
|
||
else
|
||
break;
|
||
}
|
||
PL_origalen = s - PL_origargv[0];
|
||
}
|
||
s = SvPV_force(sv,len);
|
||
i = len;
|
||
if (i >= PL_origalen) {
|
||
i = PL_origalen;
|
||
/* don't allow system to limit $0 seen by script */
|
||
/* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */
|
||
Copy(s, PL_origargv[0], i, char);
|
||
s = PL_origargv[0]+i;
|
||
*s = '\0';
|
||
}
|
||
else {
|
||
Copy(s, PL_origargv[0], i, char);
|
||
s = PL_origargv[0]+i;
|
||
*s++ = '\0';
|
||
while (++i < PL_origalen)
|
||
*s++ = ' ';
|
||
s = PL_origargv[0]+i;
|
||
for (i = 1; i < PL_origargc; i++)
|
||
PL_origargv[i] = Nullch;
|
||
}
|
||
break;
|
||
#ifdef USE_THREADS
|
||
case '@':
|
||
sv_setsv(thr->errsv, sv);
|
||
break;
|
||
#endif /* USE_THREADS */
|
||
}
|
||
return 0;
|
||
}
|
||
|
||
#ifdef USE_THREADS
|
||
int
|
||
magic_mutexfree(SV *sv, MAGIC *mg)
|
||
{
|
||
dTHR;
|
||
DEBUG_S(PerlIO_printf(PerlIO_stderr(), "0x%lx: magic_mutexfree 0x%lx\n",
|
||
(unsigned long)thr, (unsigned long)sv);)
|
||
if (MgOWNER(mg))
|
||
croak("panic: magic_mutexfree");
|
||
MUTEX_DESTROY(MgMUTEXP(mg));
|
||
COND_DESTROY(MgCONDP(mg));
|
||
SvREFCNT_dec(sv);
|
||
return 0;
|
||
}
|
||
#endif /* USE_THREADS */
|
||
|
||
I32
|
||
whichsig(char *sig)
|
||
{
|
||
register char **sigv;
|
||
|
||
for (sigv = sig_name+1; *sigv; sigv++)
|
||
if (strEQ(sig,*sigv))
|
||
return sig_num[sigv - sig_name];
|
||
#ifdef SIGCLD
|
||
if (strEQ(sig,"CHLD"))
|
||
return SIGCLD;
|
||
#endif
|
||
#ifdef SIGCHLD
|
||
if (strEQ(sig,"CLD"))
|
||
return SIGCHLD;
|
||
#endif
|
||
return 0;
|
||
}
|
||
|
||
static SV* sig_sv;
|
||
|
||
STATIC void
|
||
unwind_handler_stack(void *p)
|
||
{
|
||
dTHR;
|
||
U32 flags = *(U32*)p;
|
||
|
||
if (flags & 1)
|
||
PL_savestack_ix -= 5; /* Unprotect save in progress. */
|
||
/* cxstack_ix-- Not needed, die already unwound it. */
|
||
if (flags & 64)
|
||
SvREFCNT_dec(sig_sv);
|
||
}
|
||
|
||
Signal_t
|
||
sighandler(int sig)
|
||
{
|
||
dSP;
|
||
GV *gv = Nullgv;
|
||
HV *st;
|
||
SV *sv, *tSv = PL_Sv;
|
||
CV *cv = Nullcv;
|
||
OP *myop = PL_op;
|
||
U32 flags = 0;
|
||
I32 o_save_i = PL_savestack_ix, type;
|
||
XPV *tXpv = PL_Xpv;
|
||
|
||
if (PL_savestack_ix + 15 <= PL_savestack_max)
|
||
flags |= 1;
|
||
if (PL_markstack_ptr < PL_markstack_max - 2)
|
||
flags |= 4;
|
||
if (PL_retstack_ix < PL_retstack_max - 2)
|
||
flags |= 8;
|
||
if (PL_scopestack_ix < PL_scopestack_max - 3)
|
||
flags |= 16;
|
||
|
||
if (!psig_ptr[sig])
|
||
die("Signal SIG%s received, but no signal handler set.\n",
|
||
sig_name[sig]);
|
||
|
||
/* Max number of items pushed there is 3*n or 4. We cannot fix
|
||
infinity, so we fix 4 (in fact 5): */
|
||
if (flags & 1) {
|
||
PL_savestack_ix += 5; /* Protect save in progress. */
|
||
o_save_i = PL_savestack_ix;
|
||
SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags);
|
||
}
|
||
if (flags & 4)
|
||
PL_markstack_ptr++; /* Protect mark. */
|
||
if (flags & 8) {
|
||
PL_retstack_ix++;
|
||
PL_retstack[PL_retstack_ix] = NULL;
|
||
}
|
||
if (flags & 16)
|
||
PL_scopestack_ix += 1;
|
||
/* sv_2cv is too complicated, try a simpler variant first: */
|
||
if (!SvROK(psig_ptr[sig]) || !(cv = (CV*)SvRV(psig_ptr[sig]))
|
||
|| SvTYPE(cv) != SVt_PVCV)
|
||
cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
|
||
|
||
if (!cv || !CvROOT(cv)) {
|
||
if (PL_dowarn)
|
||
warn("SIG%s handler \"%s\" not defined.\n",
|
||
sig_name[sig], (gv ? GvENAME(gv)
|
||
: ((cv && CvGV(cv))
|
||
? GvENAME(CvGV(cv))
|
||
: "__ANON__")));
|
||
goto cleanup;
|
||
}
|
||
|
||
if(psig_name[sig]) {
|
||
sv = SvREFCNT_inc(psig_name[sig]);
|
||
flags |= 64;
|
||
sig_sv = sv;
|
||
} else {
|
||
sv = sv_newmortal();
|
||
sv_setpv(sv,sig_name[sig]);
|
||
}
|
||
|
||
PUSHSTACKi(PERLSI_SIGNAL);
|
||
PUSHMARK(SP);
|
||
PUSHs(sv);
|
||
PUTBACK;
|
||
|
||
perl_call_sv((SV*)cv, G_DISCARD);
|
||
|
||
POPSTACK;
|
||
cleanup:
|
||
if (flags & 1)
|
||
PL_savestack_ix -= 8; /* Unprotect save in progress. */
|
||
if (flags & 4)
|
||
PL_markstack_ptr--;
|
||
if (flags & 8)
|
||
PL_retstack_ix--;
|
||
if (flags & 16)
|
||
PL_scopestack_ix -= 1;
|
||
if (flags & 64)
|
||
SvREFCNT_dec(sv);
|
||
PL_op = myop; /* Apparently not needed... */
|
||
|
||
PL_Sv = tSv; /* Restore global temporaries. */
|
||
PL_Xpv = tXpv;
|
||
return;
|
||
}
|
||
|
||
|