/* mg.c
*
- * Copyright (c) 1991-1994, Larry Wall
+ * Copyright (c) 1991-1997, 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.
# include <unistd.h>
#endif
-#ifdef HAS_GETGROUPS
+#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS)
# ifndef NGROUPS
# define NGROUPS 32
# endif
#endif
-#define TAINT_FROM_REGEX(sv,rx) \
- if ((rx)->exec_tainted) \
- SvTAINTED_on(sv); \
- else \
- SvTAINTED_off(sv);
-
/*
* Use the "DESTRUCTOR" scope cleanup to reinstate magic.
*/
(t = rx->endp[paren]))
{
i = t - s;
- if (i >= 0) {
- TAINT_IF(rx->exec_tainted);
+ if (i >= 0)
return i;
- }
}
}
return 0;
- break;
case '+':
if (curpm && (rx = curpm->op_pmregexp)) {
paren = rx->lastparen;
- if (!paren)
- return 0;
- goto getparen;
+ if (paren)
+ goto getparen;
}
return 0;
- break;
case '`':
if (curpm && (rx = curpm->op_pmregexp)) {
- if ((s = rx->subbeg)) {
+ if ((s = rx->subbeg) && rx->startp[0]) {
i = rx->startp[0] - s;
- if (i >= 0) {
- TAINT_IF(rx->exec_tainted);
+ if (i >= 0)
return i;
- }
}
}
return 0;
case '\'':
if (curpm && (rx = curpm->op_pmregexp)) {
- if ((s = rx->endp[0])) {
- TAINT_IF(rx->exec_tainted);
- return (STRLEN) (rx->subend - s);
+ if (rx->subend && (s = rx->endp[0])) {
+ i = rx->subend - s;
+ if (i >= 0)
+ return i;
}
}
return 0;
(t = rx->endp[paren]))
{
i = t - s;
+ getrx:
if (i >= 0) {
+ bool was_tainted;
+ if (tainting) {
+ was_tainted = tainted;
+ tainted = FALSE;
+ }
sv_setpvn(sv,s,i);
- TAINT_FROM_REGEX(sv,rx);
+ if (tainting)
+ tainted = was_tainted || rx->exec_tainted;
break;
}
}
break;
case '`':
if (curpm && (rx = curpm->op_pmregexp)) {
- if ((s = rx->subbeg)) {
+ if ((s = rx->subbeg) && rx->startp[0]) {
i = rx->startp[0] - s;
- if (i >= 0) {
- sv_setpvn(sv,s,i);
- TAINT_FROM_REGEX(sv,rx);
- break;
- }
+ goto getrx;
}
}
sv_setsv(sv,&sv_undef);
break;
case '\'':
if (curpm && (rx = curpm->op_pmregexp)) {
- if ((s = rx->endp[0])) {
- sv_setpvn(sv,s, rx->subend - s);
- TAINT_FROM_REGEX(sv,rx);
- break;
+ if (rx->subend && (s = rx->endp[0])) {
+ i = rx->subend - s;
+ goto getrx;
}
}
sv_setsv(sv,&sv_undef);
#endif
break;
case '?':
- sv_setiv(sv, (IV)statusvalue);
+ {
+ dTHR;
+ sv_setiv(sv, (IV)STATUS_CURRENT);
+#ifdef COMPLEX_STATUS
+ LvTARGOFF(sv) = statusvalue;
+ LvTARGLEN(sv) = statusvalue_vms;
+#endif
+ }
break;
case '^':
s = IoTOP_NAME(GvIOp(defoutgv));
case '/':
break;
case '[':
- sv_setiv(sv, (IV)curcop->cop_arybase);
+ WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase));
break;
case '|':
sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 );
break;
case '(':
sv_setiv(sv, (IV)gid);
- s = buf;
- (void)sprintf(s,"%d",(int)gid);
+ sv_setpvf(sv, "%Vd", (IV)gid);
goto add_groups;
case ')':
sv_setiv(sv, (IV)egid);
- s = buf;
- (void)sprintf(s,"%d",(int)egid);
+ sv_setpvf(sv, "%Vd", (IV)egid);
add_groups:
- while (*s) s++;
#ifdef HAS_GETGROUPS
{
Groups_t gary[NGROUPS];
-
i = getgroups(NGROUPS,gary);
- while (--i >= 0) {
- (void)sprintf(s," %d", (int)gary[i]);
- while (*s) s++;
- }
+ while (--i >= 0)
+ sv_catpvf(sv, " %Vd", (IV)gary[i]);
}
#endif
- sv_setpv(sv,buf);
SvIOK_on(sv); /* what a wonderful hack! */
break;
case '*':
{
register char *s;
char *ptr;
- STRLEN len;
+ STRLEN len, klen;
I32 i;
+
s = SvPV(sv,len);
- ptr = MgPV(mg);
+ 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) {
- HE *envhe;
- SV *keysv;
- if (mg->mg_len == HEf_SVKEY) keysv = (SV *)mg->mg_ptr;
- else keysv = newSVpv(mg->mg_ptr,mg->mg_len);
- if (envhe = hv_fetch_ent(GvHVn(envgv),keysv,FALSE,0))
- s = SvPV(HeVAL(envhe),len);
- if (mg->mg_len != HEf_SVKEY) SvREFCNT_dec(keysv);
+ SV **valp;
+ if ((valp = hv_fetch(GvHVn(envgv), ptr, klen, FALSE)))
+ s = SvPV(*valp, len);
}
#endif
+
+#if !defined(OS2) && !defined(AMIGAOS) && !defined(WIN32)
/* And you'll never guess what the dog had */
/* in its mouth... */
if (tainting) {
- if (s && strEQ(ptr,"PATH")) {
+ 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) {
- s = cpytill(tokenbuf,s,strend,':',&i);
+ char tmpbuf[256];
+ struct stat st;
+ s = delimcpy(tmpbuf, tmpbuf + sizeof tmpbuf,
+ s, strend, ':', &i);
s++;
- if (*tokenbuf != '/'
- || (Stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) )
+ if (i >= sizeof tmpbuf /* too long -- assume the worst */
+ || *tmpbuf != '/'
+ || (Stat(tmpbuf, &st) == 0 && (st.st_mode & 2)) ) {
MgTAINTEDDIR_on(mg);
+ return 0;
+ }
}
}
}
+#endif /* neither OS2 nor AMIGAOS nor WIN32 */
+
return 0;
}
SV* sv;
MAGIC* mg;
{
- my_setenv(MgPV(mg),Nullch);
+ my_setenv(MgPV(mg,na),Nullch);
+ return 0;
+}
+
+int
+magic_clear_all_env(sv,mg)
+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 == origenviron)
+ New(901, environ, 1, char*);
+ else
+ for (i = 0; environ[i]; i++)
+ Safefree(environ[i]);
+ environ[0] = Nullch;
+
+#endif
+#endif
return 0;
}
{
I32 i;
/* Are we fetching a signal entry? */
- i = whichsig(MgPV(mg));
+ i = whichsig(MgPV(mg,na));
if (i) {
if(psig_ptr[i])
sv_setsv(sv,psig_ptr[i]);
else {
+ dTHR; /* just for SvREFCNT_inc */
Sighandler_t sigstate = rsignal_state(i);
/* cache state so we don't fetch it again */
{
I32 i;
/* Are we clearing a signal entry? */
- i = whichsig(MgPV(mg));
+ i = whichsig(MgPV(mg,na));
if (i) {
if(psig_ptr[i]) {
SvREFCNT_dec(psig_ptr[i]);
SV* sv;
MAGIC* mg;
{
+ dTHR;
register char *s;
I32 i;
SV** svp;
- s = MgPV(mg);
+ s = MgPV(mg,na);
if (*s == '_') {
if (strEQ(s,"__DIE__"))
svp = &diehook;
warn("No such signal: SIG%s", s);
return 0;
}
- if(psig_ptr[i])
- SvREFCNT_dec(psig_ptr[i]);
+ SvREFCNT_dec(psig_name[i]);
+ SvREFCNT_dec(psig_ptr[i]);
psig_ptr[i] = SvREFCNT_inc(sv);
- if(psig_name[i])
- SvREFCNT_dec(psig_name[i]);
- psig_name[i] = newSVpv(s,strlen(s));
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, sighandler);
+ (void)rsignal(i, sighandlerp);
else
*svp = SvREFCNT_inc(sv);
return 0;
*svp = 0;
}
else {
- if(hints & HINT_STRICT_REFS)
- die(no_symref,s,"a subroutine");
- if (!strchr(s,':') && !strchr(s,'\'')) {
- sprintf(tokenbuf, "main::%s",s);
- sv_setpv(sv,tokenbuf);
- }
+ /*
+ * 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, sighandler);
+ (void)rsignal(i, sighandlerp);
else
*svp = SvREFCNT_inc(sv);
}
MAGIC* mg;
char *meth;
{
+ dTHR;
dSP;
ENTER;
SV* sv;
MAGIC* mg;
{
+ dTHR;
dSP;
PUSHMARK(sp);
SV* sv;
MAGIC* mg;
{
+ dTHR;
dSP;
PUSHMARK(sp);
MAGIC* mg;
SV* key;
{
+ dTHR;
dSP;
char *meth = SvOK(key) ? "NEXTKEY" : "FIRSTKEY";
SV* sv;
MAGIC* mg;
{
+ dTHR;
OP *o;
I32 i;
GV* gv;
gv = DBline;
i = SvTRUE(sv);
svp = av_fetch(GvAV(gv),
- atoi(MgPV(mg)), FALSE);
+ atoi(MgPV(mg,na)), FALSE);
if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp)))
o->op_private = i;
else
SV* sv;
MAGIC* mg;
{
+ dTHR;
sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase);
return 0;
}
SV* sv;
MAGIC* mg;
{
+ dTHR;
av_fill((AV*)mg->mg_obj, SvIV(sv) - curcop->cop_arybase);
return 0;
}
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 + curcop->cop_arybase);
return 0;
}
}
len = SvPOK(lsv) ? SvCUR(lsv) : sv_len(lsv);
- pos = SvIV(sv) - curcop->cop_arybase;
+ WITH_THR(pos = SvIV(sv) - curcop->cop_arybase);
if (pos < 0) {
pos += len;
if (pos < 0)
else if (pos > len)
pos = len;
mg->mg_len = pos;
+ mg->mg_flags &= ~MGf_MINMATCH;
return 0;
}
if (GvGP(sv))
gp_free((GV*)sv);
GvGP(sv) = gp_ref(GvGP(gv));
- if (!GvAV(gv))
- gv_AVadd(gv);
- if (!GvHV(gv))
- gv_HVadd(gv);
- if (!GvIOp(gv))
- GvIOp(gv) = newIO();
return 0;
}
SV* sv;
MAGIC* mg;
{
+ dTHR;
if (localizing) {
if (localizing == 1)
mg->mg_len <<= 1;
}
int
-magic_setvivary(sv,mg)
+magic_getdefelem(sv,mg)
SV* sv;
MAGIC* mg;
{
+ SV *targ = Nullsv;
if (LvTARGLEN(sv)) {
- AV* av = (AV*)LvTARG(sv);
- if (LvTARGOFF(sv) <= AvFILL(av)) {
- SV** svp = AvARRAY(av) + LvTARGOFF(sv);
- LvTARG(sv) = newSVsv(*svp);
- SvREFCNT_dec(*svp);
- *svp = SvREFCNT_inc(LvTARG(sv));
+ if (mg->mg_obj) {
+ HV* hv = (HV*)LvTARG(sv);
+ HE* he = hv_fetch_ent(hv, mg->mg_obj, FALSE, 0);
+ if (he)
+ targ = HeVAL(he);
+ }
+ else {
+ AV* av = (AV*)LvTARG(sv);
+ if ((I32)LvTARGOFF(sv) <= AvFILL(av))
+ targ = AvARRAY(av)[LvTARGOFF(sv)];
+ }
+ if (targ && targ != &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
- LvTARG(sv) = Nullsv;
- LvTARGLEN(sv) = 0;
- SvREFCNT_dec(av);
}
- if (LvTARG(sv))
+ else
+ targ = LvTARG(sv);
+ sv_setsv(sv, targ ? targ : &sv_undef);
+ return 0;
+}
+
+int
+magic_setdefelem(sv,mg)
+SV* sv;
+MAGIC* mg;
+{
+ if (LvTARGLEN(sv))
+ vivify_defelem(sv);
+ if (LvTARG(sv)) {
sv_setsv(LvTARG(sv), sv);
+ SvSETMAGIC(LvTARG(sv));
+ }
return 0;
}
int
-magic_freevivary(sv,mg)
+magic_freedefelem(sv,mg)
SV* sv;
MAGIC* mg;
{
SvREFCNT_dec(LvTARG(sv));
+ return 0;
+}
+
+void
+vivify_defelem(sv)
+SV* sv;
+{
+ dTHR; /* just for SvREFCNT_inc and SvREFCNT_dec*/
+ MAGIC* mg;
+ SV* value;
+
+ if (!LvTARGLEN(sv) || !(mg = mg_find(sv, 'y')))
+ return;
+ if (mg->mg_obj) {
+ HV* hv = (HV*)LvTARG(sv);
+ HE* he = hv_fetch_ent(hv, mg->mg_obj, TRUE, 0);
+ if (!he || (value = HeVAL(he)) == &sv_undef)
+ croak(no_helem, SvPV(mg->mg_obj, 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) == &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
return 0;
}
+#ifdef USE_LOCALE_COLLATE
int
magic_setcollxfrm(sv,mg)
SV* sv;
* René Descartes said "I think not."
* and vanished with a faint plop.
*/
- sv_unmagic(sv, 'o');
+ 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,mg)
SV* sv;
MAGIC* mg;
{
+ dTHR;
register char *s;
I32 i;
STRLEN len;
#ifdef VMS
set_vaxc_errno(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
#else
- SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),4); /* will anyone ever use this? */
+ /* will anyone ever use this? */
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv), 4);
#endif
break;
case '\006': /* ^F */
IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
break;
case '|':
- IoFLAGS(GvIOp(defoutgv)) &= ~IOf_FLUSH;
- if ((SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)) != 0) {
- IoFLAGS(GvIOp(defoutgv)) |= IOf_FLUSH;
+ {
+ IO *io = GvIOp(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 '*':
case '\\':
if (ors)
Safefree(ors);
- ors = savepv(SvPV(sv,orslen));
+ if (SvOK(sv) || SvGMAGICAL(sv))
+ ors = savepv(SvPV(sv,orslen));
+ else {
+ ors = Nullch;
+ orslen = 0;
+ }
break;
case ',':
if (ofs)
compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
break;
case '?':
- statusvalue = FIXSTATUS(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv));
+#ifdef COMPLEX_STATUS
+ if (localizing == 2) {
+ statusvalue = LvTARGOFF(sv);
+ 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) : sv_2iv(sv),SvIV(sv) == EVMSERR ? 4 : vaxc$errno); /* will anyone ever use this? */
+ SETERRNO(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv),
+ (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno);
break;
case '<':
uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
tainting |= (uid && (euid != uid || egid != gid));
break;
case ')':
+#ifdef HAS_SETGROUPS
+ {
+ char *p = SvPV(sv, na);
+ Groups_t gary[NGROUPS];
+
+ SET_NUMERIC_STANDARD();
+ while (isSPACE(*p))
+ ++p;
+ 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 */
egid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv);
+#endif /* HAS_SETGROUPS */
if (delaymagic) {
delaymagic |= DM_EGID;
break; /* don't do magic till later */
}
/* can grab env area too? */
if (origenviron && origenviron[0] == s + 1) {
- my_setenv("NoNeSuCh", Nullch);
+ my_setenv("NoNe SuCh", Nullch);
/* force copy of environment */
for (i = 0; origenviron[i]; i++)
if (origenviron[i] == s + 1)
return 0;
}
+#ifdef USE_THREADS
+int
+magic_mutexfree(sv, mg)
+SV *sv;
+MAGIC *mg;
+{
+ dTHR;
+ DEBUG_L(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));
+ return 0;
+}
+#endif /* USE_THREADS */
+
I32
whichsig(sig)
char *sig;
sighandler(sig)
int sig;
{
+ dTHR;
dSP;
GV *gv;
HV *st;
SV *sv;
CV *cv;
AV *oldstack;
-
- if(!psig_ptr[sig])
- die("Signal SIG%s received, but no signal handler set.\n",
- sig_name[sig]);
+
+ if (!psig_ptr[sig])
+ die("Signal SIG%s received, but no signal handler set.\n",
+ sig_name[sig]);
cv = sv_2cv(psig_ptr[sig],&st,&gv,TRUE);
if (!cv || !CvROOT(cv)) {
if(psig_name[sig])
sv = SvREFCNT_inc(psig_name[sig]);
else {
- sv = sv_newmortal();
- sv_setpv(sv,sig_name[sig]);
+ sv = sv_newmortal();
+ sv_setpv(sv,sig_name[sig]);
}
PUSHMARK(sp);
PUSHs(sv);
projects / p5sagit/p5-mst-13.2.git / blobdiff