X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=mg.c;h=492e35191d1065f7bf7bd2d4af4025f83b38540a;hb=8803afc236dca2c2990fc3236c7c43e710a099fb;hp=a0c12e6a2b668c71ad237374e6676c2dddd78273;hpb=93a17b20b6d176db3f04f51a63b0a781e5ffd11c;p=p5sagit%2Fp5-mst-13.2.git diff --git a/mg.c b/mg.c index a0c12e6..492e351 100644 --- a/mg.c +++ b/mg.c @@ -1,80 +1,231 @@ -/* $RCSfile: hash.c,v $$Revision: 4.1 $$Date: 92/08/07 18:21:48 $ +/* mg.c * - * Copyright (c) 1993, 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. * - * $Log: hash.c,v $ + */ + +/* + * "Sam sat on the ground and put his head in his hands. 'I wish I had never + * come here, and I don't want to see no more magic,' he said, and fell silent." */ #include "EXTERN.h" #include "perl.h" -int -mg_get(sv) -SV* sv; +/* XXX If this causes problems, set i_unistd=undef in the hint file. */ +#ifdef I_UNISTD +# include +#endif + +#if defined(HAS_GETGROUPS) || defined(HAS_SETGROUPS) +# ifndef NGROUPS +# define NGROUPS 32 +# endif +#endif + +/* + * Use the "DESTRUCTOR" scope cleanup to reinstate magic. + */ + +struct magic_state { + SV* mgs_sv; + U32 mgs_flags; +}; +typedef struct magic_state MGS; + +static void restore_magic _((void *p)); + +static void +save_magic(MGS *mgs, SV *sv) +{ + assert(SvMAGICAL(sv)); + + mgs->mgs_sv = sv; + mgs->mgs_flags = SvMAGICAL(sv) | SvREADONLY(sv); + SAVEDESTRUCTOR(restore_magic, mgs); + + SvMAGICAL_off(sv); + SvREADONLY_off(sv); + SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT; +} + +static void +restore_magic(void *p) +{ + MGS* mgs = (MGS*)p; + SV* sv = mgs->mgs_sv; + + if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) + { + if (mgs->mgs_flags) + SvFLAGS(sv) |= mgs->mgs_flags; + else + mg_magical(sv); + if (SvGMAGICAL(sv)) + SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK); + } +} + +void +mg_magical(SV *sv) { MAGIC* mg; for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; - if (vtbl && vtbl->svt_get) + if (vtbl) { + if (vtbl->svt_get && !(mg->mg_flags & MGf_GSKIP)) + SvGMAGICAL_on(sv); + if (vtbl->svt_set) + SvSMAGICAL_on(sv); + if (!(SvFLAGS(sv) & (SVs_GMG|SVs_SMG)) || vtbl->svt_clear) + SvRMAGICAL_on(sv); + } + } +} + +int +mg_get(SV *sv) +{ + MGS mgs; + MAGIC* mg; + MAGIC** mgp; + int mgp_valid = 0; + + ENTER; + save_magic(&mgs, sv); + + mgp = &SvMAGIC(sv); + while ((mg = *mgp) != 0) { + MGVTBL* vtbl = mg->mg_virtual; + if (!(mg->mg_flags & MGf_GSKIP) && vtbl && vtbl->svt_get) { (*vtbl->svt_get)(sv, mg); + /* Ignore this magic if it's been deleted */ + if ((mg == (mgp_valid ? *mgp : SvMAGIC(sv))) && + (mg->mg_flags & MGf_GSKIP)) + mgs.mgs_flags = 0; + } + /* Advance to next magic (complicated by possible deletion) */ + if (mg == (mgp_valid ? *mgp : SvMAGIC(sv))) { + mgp = &mg->mg_moremagic; + mgp_valid = 1; + } + else + mgp = &SvMAGIC(sv); /* Re-establish pointer after sv_upgrade */ } + + LEAVE; return 0; } int -mg_set(sv) -SV* sv; +mg_set(SV *sv) { + MGS mgs; MAGIC* mg; - for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { + MAGIC* nextmg; + + ENTER; + save_magic(&mgs, sv); + + for (mg = SvMAGIC(sv); mg; mg = nextmg) { MGVTBL* vtbl = mg->mg_virtual; + nextmg = mg->mg_moremagic; /* it may delete itself */ + if (mg->mg_flags & MGf_GSKIP) { + mg->mg_flags &= ~MGf_GSKIP; /* setting requires another read */ + mgs.mgs_flags = 0; + } if (vtbl && vtbl->svt_set) (*vtbl->svt_set)(sv, mg); } + + LEAVE; return 0; } U32 -mg_len(sv) -SV* sv; +mg_len(SV *sv) { MAGIC* mg; + char *junk; + STRLEN len; + for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; - if (vtbl && vtbl->svt_len) - return (*vtbl->svt_len)(sv, mg); + if (vtbl && vtbl->svt_len) { + MGS mgs; + + ENTER; + save_magic(&mgs, sv); + /* omit MGf_GSKIP -- not changed here */ + len = (*vtbl->svt_len)(sv, mg); + LEAVE; + return len; + } + } + + junk = SvPV(sv, len); + return len; +} + +I32 +mg_size(SV *sv) +{ + MAGIC* mg; + I32 len; + + for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { + MGVTBL* vtbl = mg->mg_virtual; + if (vtbl && vtbl->svt_len) { + MGS mgs; + ENTER; + /* omit MGf_GSKIP -- not changed here */ + len = (*vtbl->svt_len)(sv, mg); + LEAVE; + return len; + } + } + + switch(SvTYPE(sv)) { + case SVt_PVAV: + len = AvFILLp((AV *) sv); /* Fallback to non-tied array */ + return len; + case SVt_PVHV: + /* FIXME */ + default: + croak("Size magic not implemented"); + break; } - mg_get(sv); - if (!SvPOK(sv) && SvNIOK(sv)) - sv_2pv(sv); - if (SvPOK(sv)) - return SvCUR(sv); return 0; } int -mg_clear(sv) -SV* sv; +mg_clear(SV *sv) { + MGS mgs; MAGIC* mg; + + ENTER; + save_magic(&mgs, sv); + for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { MGVTBL* vtbl = mg->mg_virtual; + /* omit GSKIP -- never set here */ + if (vtbl && vtbl->svt_clear) (*vtbl->svt_clear)(sv, mg); } + + LEAVE; return 0; } MAGIC* -mg_find(sv, type) -SV* sv; -char type; +mg_find(SV *sv, int type) { MAGIC* mg; - MAGIC** mgp = &SvMAGIC(sv); for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { if (mg->mg_type == type) return mg; @@ -83,31 +234,21 @@ char type; } int -mg_free(sv, type) -SV* sv; -char type; +mg_copy(SV *sv, SV *nsv, char *key, I32 klen) { + int count = 0; MAGIC* mg; - MAGIC** mgp = &SvMAGIC(sv); - for (mg = *mgp; mg; mg = *mgp) { - if (mg->mg_type == type) { - MGVTBL* vtbl = mg->mg_virtual; - *mgp = mg->mg_moremagic; - if (vtbl && vtbl->svt_free) - (*vtbl->svt_free)(sv, mg); - if (mg->mg_ptr && mg->mg_type != 'g') - Safefree(mg->mg_ptr); - Safefree(mg); + for (mg = SvMAGIC(sv); mg; mg = mg->mg_moremagic) { + if (isUPPER(mg->mg_type)) { + sv_magic(nsv, mg->mg_obj, toLOWER(mg->mg_type), key, klen); + count++; } - else - mgp = &mg->mg_moremagic; } - return 0; + return count; } int -mg_freeall(sv) -SV* sv; +mg_free(SV *sv) { MAGIC* mg; MAGIC* moremagic; @@ -117,7 +258,12 @@ SV* sv; if (vtbl && vtbl->svt_free) (*vtbl->svt_free)(sv, mg); if (mg->mg_ptr && mg->mg_type != 'g') - Safefree(mg->mg_ptr); + if (mg->mg_len >= 0) + Safefree(mg->mg_ptr); + else if (mg->mg_len == HEf_SVKEY) + SvREFCNT_dec((SV*)mg->mg_ptr); + if (mg->mg_flags & MGf_REFCOUNTED) + SvREFCNT_dec(mg->mg_obj); Safefree(mg); } SvMAGIC(sv) = 0; @@ -128,72 +274,57 @@ SV* sv; #include #endif -#ifdef VOIDSIG -#define handlertype void -#else -#define handlertype int -#endif - -static handlertype sighandler(); - U32 -magic_len(sv, mg) -SV *sv; -MAGIC *mg; +magic_len(SV *sv, MAGIC *mg) { + dTHR; register I32 paren; register char *s; register I32 i; + register REGEXP *rx; + char *t; switch (*mg->mg_ptr) { case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case '&': - if (curpm) { + if (curpm && (rx = curpm->op_pmregexp)) { paren = atoi(mg->mg_ptr); getparen: - if (curpm->op_pmregexp && - paren <= curpm->op_pmregexp->nparens && - (s = curpm->op_pmregexp->startp[paren]) ) { - i = curpm->op_pmregexp->endp[paren] - s; + if (paren <= rx->nparens && + (s = rx->startp[paren]) && + (t = rx->endp[paren])) + { + i = t - s; if (i >= 0) return i; - else - return 0; } - else - return 0; } - break; + return 0; case '+': - if (curpm) { - paren = curpm->op_pmregexp->lastparen; - goto getparen; + if (curpm && (rx = curpm->op_pmregexp)) { + paren = rx->lastparen; + if (paren) + goto getparen; } - break; + return 0; case '`': - if (curpm) { - if (curpm->op_pmregexp && - (s = curpm->op_pmregexp->subbeg) ) { - i = curpm->op_pmregexp->startp[0] - s; + if (curpm && (rx = curpm->op_pmregexp)) { + if ((s = rx->subbeg) && rx->startp[0]) { + i = rx->startp[0] - s; if (i >= 0) return i; - else - return 0; } - else - return 0; } - break; + return 0; case '\'': - if (curpm) { - if (curpm->op_pmregexp && - (s = curpm->op_pmregexp->endp[0]) ) { - return (STRLEN) (curpm->op_pmregexp->subend - s); + if (curpm && (rx = curpm->op_pmregexp)) { + if (rx->subend && (s = rx->endp[0])) { + i = rx->subend - s; + if (i >= 0) + return i; } - else - return 0; } - break; + return 0; case ',': return (STRLEN)ofslen; case '\\': @@ -201,103 +332,186 @@ MAGIC *mg; } magic_get(sv,mg); if (!SvPOK(sv) && SvNIOK(sv)) - sv_2pv(sv); + sv_2pv(sv, &na); if (SvPOK(sv)) return SvCUR(sv); return 0; } int -magic_get(sv, mg) -SV *sv; -MAGIC *mg; +magic_get(SV *sv, MAGIC *mg) { + dTHR; register I32 paren; register char *s; register I32 i; + register REGEXP *rx; + char *t; switch (*mg->mg_ptr) { + case '\001': /* ^A */ + sv_setsv(sv, bodytarget); + break; case '\004': /* ^D */ - sv_setiv(sv,(I32)(debug & 32767)); + sv_setiv(sv, (IV)(debug & 32767)); + break; + case '\005': /* ^E */ +#ifdef VMS + { +# include +# include + char msg[255]; + $DESCRIPTOR(msgdsc,msg); + sv_setnv(sv,(double) vaxc$errno); + if (sys$getmsg(vaxc$errno,&msgdsc.dsc$w_length,&msgdsc,0,0) & 1) + sv_setpvn(sv,msgdsc.dsc$a_pointer,msgdsc.dsc$w_length); + else + sv_setpv(sv,""); + } +#else +#ifdef OS2 + if (!(_emx_env & 0x200)) { /* Under DOS */ + sv_setnv(sv, (double)errno); + sv_setpv(sv, errno ? Strerror(errno) : ""); + } else { + if (errno != errno_isOS2) + Perl_rc = _syserrno(); + sv_setnv(sv, (double)Perl_rc); + sv_setpv(sv, os2error(Perl_rc)); + } +#else +#ifdef WIN32 + { + DWORD dwErr = GetLastError(); + sv_setnv(sv, (double)dwErr); + if (dwErr) + win32_str_os_error(sv, dwErr); + else + sv_setpv(sv, ""); + SetLastError(dwErr); + } +#else + sv_setnv(sv, (double)errno); + sv_setpv(sv, errno ? Strerror(errno) : ""); +#endif +#endif +#endif + SvNOK_on(sv); /* what a wonderful hack! */ break; case '\006': /* ^F */ - sv_setiv(sv,(I32)maxsysfd); + sv_setiv(sv, (IV)maxsysfd); + break; + case '\010': /* ^H */ + sv_setiv(sv, (IV)hints); break; case '\t': /* ^I */ if (inplace) sv_setpv(sv, inplace); else - sv_setsv(sv,&sv_undef); + sv_setsv(sv, &sv_undef); + break; + case '\017': /* ^O */ + sv_setpv(sv, osname); break; case '\020': /* ^P */ - sv_setiv(sv,(I32)perldb); + sv_setiv(sv, (IV)perldb); + break; + case '\023': /* ^S */ + { + dTHR; + if (lex_state != LEX_NOTPARSING) + SvOK_off(sv); + else if (in_eval) + sv_setiv(sv, 1); + else + sv_setiv(sv, 0); + } break; case '\024': /* ^T */ - sv_setiv(sv,(I32)basetime); +#ifdef BIG_TIME + sv_setnv(sv, basetime); +#else + sv_setiv(sv, (IV)basetime); +#endif break; case '\027': /* ^W */ - sv_setiv(sv,(I32)dowarn); + sv_setiv(sv, (IV)dowarn); break; case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': case '&': - if (curpm) { - paren = atoi(GvENAME(mg->mg_obj)); + if (curpm && (rx = curpm->op_pmregexp)) { + /* + * Pre-threads, this was paren = atoi(GvENAME((GV*)mg->mg_obj)); + * XXX Does the new way break anything? + */ + paren = atoi(mg->mg_ptr); getparen: - if (curpm->op_pmregexp && - paren <= curpm->op_pmregexp->nparens && - (s = curpm->op_pmregexp->startp[paren]) ) { - i = curpm->op_pmregexp->endp[paren] - s; - if (i >= 0) + if (paren <= rx->nparens && + (s = rx->startp[paren]) && + (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); - else - sv_setsv(sv,&sv_undef); + if (tainting) + tainted = was_tainted || RX_MATCH_TAINTED(rx); + break; + } } - else - sv_setsv(sv,&sv_undef); } + sv_setsv(sv,&sv_undef); break; case '+': - if (curpm) { - paren = curpm->op_pmregexp->lastparen; - goto getparen; + if (curpm && (rx = curpm->op_pmregexp)) { + paren = rx->lastparen; + if (paren) + goto getparen; } + sv_setsv(sv,&sv_undef); break; case '`': - if (curpm) { - if (curpm->op_pmregexp && - (s = curpm->op_pmregexp->subbeg) ) { - i = curpm->op_pmregexp->startp[0] - s; - if (i >= 0) - sv_setpvn(sv,s,i); - else - sv_setpvn(sv,"",0); + if (curpm && (rx = curpm->op_pmregexp)) { + if ((s = rx->subbeg) && rx->startp[0]) { + i = rx->startp[0] - s; + goto getrx; } - else - sv_setpvn(sv,"",0); } + sv_setsv(sv,&sv_undef); break; case '\'': - if (curpm) { - if (curpm->op_pmregexp && - (s = curpm->op_pmregexp->endp[0]) ) { - sv_setpvn(sv,s, curpm->op_pmregexp->subend - s); + if (curpm && (rx = curpm->op_pmregexp)) { + if (rx->subend && (s = rx->endp[0])) { + i = rx->subend - s; + goto getrx; } - else - sv_setpvn(sv,"",0); } + sv_setsv(sv,&sv_undef); break; case '.': #ifndef lint - if (last_in_gv && GvIO(last_in_gv)) { - sv_setiv(sv,(I32)GvIO(last_in_gv)->lines); + if (GvIO(last_in_gv)) { + sv_setiv(sv, (IV)IoLINES(GvIO(last_in_gv))); } #endif break; case '?': - sv_setiv(sv,(I32)statusvalue); + { + dTHR; + sv_setiv(sv, (IV)STATUS_CURRENT); +#ifdef COMPLEX_STATUS + LvTARGOFF(sv) = statusvalue; + LvTARGLEN(sv) = statusvalue_vms; +#endif + } break; case '^': - s = GvIO(defoutgv)->top_name; + s = IoTOP_NAME(GvIOp(defoutgv)); if (s) sv_setpv(sv,s); else { @@ -306,20 +520,20 @@ MAGIC *mg; } break; case '~': - s = GvIO(defoutgv)->fmt_name; + s = IoFMT_NAME(GvIOp(defoutgv)); if (!s) s = GvENAME(defoutgv); sv_setpv(sv,s); break; #ifndef lint case '=': - sv_setiv(sv,(I32)GvIO(defoutgv)->page_len); + sv_setiv(sv, (IV)IoPAGE_LEN(GvIOp(defoutgv))); break; case '-': - sv_setiv(sv,(I32)GvIO(defoutgv)->lines_left); + sv_setiv(sv, (IV)IoLINES_LEFT(GvIOp(defoutgv))); break; case '%': - sv_setiv(sv,(I32)GvIO(defoutgv)->page); + sv_setiv(sv, (IV)IoPAGE(GvIOp(defoutgv))); break; #endif case ':': @@ -327,12 +541,10 @@ MAGIC *mg; case '/': break; case '[': - sv_setiv(sv,(I32)arybase); + WITH_THR(sv_setiv(sv, (IV)curcop->cop_arybase)); break; case '|': - if (!GvIO(defoutgv)) - GvIO(defoutgv) = newIO(); - sv_setiv(sv, (GvIO(defoutgv)->flags & IOf_FLUSH) != 0 ); + sv_setiv(sv, (IV)(IoFLAGS(GvIOp(defoutgv)) & IOf_FLUSH) != 0 ); break; case ',': sv_setpvn(sv,ofs,ofslen); @@ -344,52 +556,62 @@ MAGIC *mg; sv_setpv(sv,ofmt); break; case '!': - sv_setnv(sv,(double)errno); - sv_setpv(sv, errno ? strerror(errno) : ""); +#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,(I32)uid); + sv_setiv(sv, (IV)uid); break; case '>': - sv_setiv(sv,(I32)euid); + sv_setiv(sv, (IV)euid); break; case '(': - s = buf; - (void)sprintf(s,"%d",(int)gid); + sv_setiv(sv, (IV)gid); + sv_setpvf(sv, "%Vd", (IV)gid); goto add_groups; case ')': - s = buf; - (void)sprintf(s,"%d",(int)egid); + sv_setiv(sv, (IV)egid); + sv_setpvf(sv, "%Vd", (IV)egid); add_groups: - while (*s) s++; #ifdef HAS_GETGROUPS -#ifndef NGROUPS -#define NGROUPS 32 -#endif { - GROUPSTYPE gary[NGROUPS]; - + Groups_t gary[NGROUPS]; i = getgroups(NGROUPS,gary); - while (--i >= 0) { - (void)sprintf(s," %ld", (long)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 '*': break; case '0': break; +#ifdef USE_THREADS + case '@': + sv_setsv(sv, thr->errsv); + break; +#endif /* USE_THREADS */ } + return 0; } int -magic_getuvar(sv, mg) -SV *sv; -MAGIC *mg; +magic_getuvar(SV *sv, MAGIC *mg) { struct ufuncs *uf = (struct ufuncs *)mg->mg_ptr; @@ -399,26 +621,103 @@ MAGIC *mg; } int -magic_setenv(sv,mg) -SV* sv; -MAGIC* mg; +magic_setenv(SV *sv, MAGIC *mg) { register char *s; + char *ptr; + STRLEN len, klen; I32 i; - s = SvPV(sv); - my_setenv(mg->mg_ptr,s); + + 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(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... */ -#ifdef TAINT - if (s && strEQ(mg->mg_ptr,"PATH")) { - char *strend = SvEND(sv); + if (tainting) { + MgTAINTEDDIR_off(mg); +#ifdef VMS + if (s && klen == 8 && strEQ(ptr, "DCL$PATH")) { + char pathbuf[256], eltbuf[256], *cp, *elt = s; + struct stat sbuf; + int i = 0, j = 0; - while (s < strend) { - s = cpytill(tokenbuf,s,strend,':',&i); - s++; - if (*tokenbuf != '/' - || (stat(tokenbuf,&statbuf) && (statbuf.st_mode & 2)) ) - sv->sv_tainted = 2; + do { /* DCL$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,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 (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), na)); } } #endif @@ -426,49 +725,379 @@ MAGIC* mg; } int -magic_setsig(sv,mg) -SV* sv; -MAGIC* mg; +magic_clear_all_env(SV *sv, MAGIC *mg) { - register char *s; - I32 i; - s = SvPV(sv); - i = whichsig(mg->mg_ptr); /* ...no, a brick */ - if (!i && (dowarn || strEQ(mg->mg_ptr,"ALARM"))) - warn("No such signal: SIG%s", mg->mg_ptr); - if (strEQ(s,"IGNORE")) -#ifndef lint - (void)signal(i,SIG_IGN); +#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 - else if (strEQ(s,"DEFAULT") || !*s) - (void)signal(i,SIG_DFL); + return 0; +} + +int +magic_getsig(SV *sv, MAGIC *mg) +{ + I32 i; + /* Are we fetching a signal entry? */ + i = whichsig(MgPV(mg,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,&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,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,na); + if (*s == '_') { + if (strEQ(s,"__DIE__")) + svp = &diehook; + else if (strEQ(s,"__WARN__")) + svp = &warnhook; + else if (strEQ(s,"__PARSE__")) + svp = &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 (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, sighandlerp); + else + *svp = SvREFCNT_inc(sv); + return 0; + } + s = SvPV_force(sv,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 { - (void)signal(i,sighandler); - if (!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, sighandlerp); + else + *svp = SvREFCNT_inc(sv); + } + return 0; +} + +int +magic_setisa(SV *sv, MAGIC *mg) +{ + HV *stash; + SV **svp; + I32 fill; + HV *basefields = Nullhv; + GV **gvp; + GV *gv; + HE *he; + static char *FIELDS = "FIELDS"; + + sub_generation++; + + if (mg->mg_type == 'i') + return 0; /* Ignore lower-case version of the magic */ + + stash = GvSTASH(mg->mg_obj); + svp = AvARRAY((AV*)sv); + + /* NOTE: No support for tied ISA */ + for (fill = AvFILLp((AV*)sv); fill >= 0; fill--, svp++) { + HV *basestash = gv_stashsv(*svp, FALSE); + + if (!basestash) { + if (dowarn) + warn("No such package \"%_\" in @ISA assignment", *svp); + continue; + } + gvp = (GV**)hv_fetch(basestash, FIELDS, 6, FALSE); + if (gvp && *gvp && GvHV(*gvp)) { + if (basefields) + croak("Can't multiply inherit %%FIELDS"); + basefields = GvHV(*gvp); } } + + if (!basefields) + return 0; + + gv = (GV*)*hv_fetch(stash, FIELDS, 6, TRUE); + if (!isGV(gv)) + gv_init(gv, stash, FIELDS, 6, TRUE); + if (!GvHV(gv)) + GvHV(gv) = newHV(); + if (HvKEYS(GvHV(gv))) + croak("Inherited %%FIELDS can't override existing %%FIELDS"); + + hv_iterinit(GvHV(gv)); + while ((he = hv_iternext(basefields))) + hv_store(GvHV(gv), HeKEY(he), HeKLEN(he), HeVAL(he), HeHASH(he)); + return 0; } +#ifdef OVERLOAD + int -magic_setdbm(sv,mg) -SV* sv; -MAGIC* mg; +magic_setamagic(SV *sv, MAGIC *mg) { - HV* hv = (HV*)mg->mg_obj; - hv_dbmstore(hv,mg->mg_ptr,mg->mg_len,sv); /* XXX slurp? */ + /* HV_badAMAGIC_on(Sv_STASH(sv)); */ + amagic_generation++; + return 0; } +#endif /* OVERLOAD */ int -magic_setdbline(sv,mg) -SV* sv; -MAGIC* mg; +magic_setnkeys(SV *sv, MAGIC *mg) { + if (LvTARG(sv)) { + hv_ksplit((HV*)LvTARG(sv), SvIV(sv)); + LvTARG(sv) = Nullsv; /* Don't allow a ref to reassign this. */ + } + 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; + PUSHSTACK(SI_MAGIC); + + if (magic_methcall(mg, meth, G_SCALAR, 2, NULL)) { + sv_setsv(sv, *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; + PUSHSTACK(SI_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; + PUSHSTACK(SI_MAGIC); + if (magic_methcall(mg, "FETCHSIZE", G_SCALAR, 2, NULL)) { + sv = *stack_sp--; + retval = (U32) SvIV(sv)-1; + } + POPSTACK(); + FREETMPS; + LEAVE; + return retval; +} + +int magic_wipepack(SV *sv, MAGIC *mg) +{ + dSP; + + ENTER; + PUSHSTACK(SI_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; + PUSHSTACK(SI_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, *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; @@ -476,8 +1105,9 @@ MAGIC* mg; gv = DBline; i = SvTRUE(sv); - svp = av_fetch(GvAV(gv),atoi(mg->mg_ptr), FALSE); - if (svp && SvIOK(*svp) && (o = (OP*)SvSTASH(*svp))) + svp = av_fetch(GvAV(gv), + atoi(MgPV(mg,na)), FALSE); + if (svp && SvIOKp(*svp) && (o = (OP*)SvSTASH(*svp))) o->op_private = i; else warn("Can't break at that line\n"); @@ -485,105 +1115,262 @@ MAGIC* mg; } int -magic_getarylen(sv,mg) -SV* sv; -MAGIC* mg; +magic_getarylen(SV *sv, MAGIC *mg) { - sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + arybase); + dTHR; + sv_setiv(sv, AvFILL((AV*)mg->mg_obj) + curcop->cop_arybase); return 0; } int -magic_setarylen(sv,mg) -SV* sv; -MAGIC* mg; +magic_setarylen(SV *sv, MAGIC *mg) { - av_fill((AV*)mg->mg_obj, (SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)) - arybase); + dTHR; + av_fill((AV*)mg->mg_obj, SvIV(sv) - 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 + 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) - 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,mg) -SV* sv; -MAGIC* mg; +magic_getglob(SV *sv, MAGIC *mg) { - gv_efullname(sv,((GV*)sv));/* a gv value, be nice */ + 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,mg) -SV* sv; -MAGIC* mg; +magic_setglob(SV *sv, MAGIC *mg) { register char *s; GV* gv; if (!SvOK(sv)) return 0; - s = SvPOK(sv) ? SvPV(sv) : sv_2pv(sv); + s = SvPV(sv, na); if (*s == '*' && s[1]) s++; - gv = gv_fetchpv(s,TRUE); + gv = gv_fetchpv(s,TRUE, SVt_PVGV); if (sv == (SV*)gv) return 0; if (GvGP(sv)) - gp_free(sv); + gp_free((GV*)sv); GvGP(sv) = gp_ref(GvGP(gv)); - if (!GvAV(gv)) - gv_AVadd(gv); - if (!GvHV(gv)) - gv_HVadd(gv); - if (!GvIO(gv)) - GvIO(gv) = newIO(); return 0; } int -magic_setsubstr(sv,mg) -SV* sv; -MAGIC* mg; +magic_setsubstr(SV *sv, MAGIC *mg) { - char *tmps = SvPV(sv); - if (!tmps) - tmps = ""; - sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps,SvCUR(sv)); + STRLEN len; + char *tmps = SvPV(sv,len); + sv_insert(LvTARG(sv),LvTARGOFF(sv),LvTARGLEN(sv), tmps, len); return 0; } int -magic_setvec(sv,mg) -SV* sv; -MAGIC* mg; +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 (localizing) { + if (localizing == 1) + mg->mg_len <<= 1; + else + mg->mg_len >>= 1; + } + else if (tainted) + mg->mg_len |= 1; + else + mg->mg_len &= ~1; + return 0; +} + +int +magic_setvec(SV *sv, MAGIC *mg) { do_vecset(sv); /* XXX slurp this routine */ return 0; } int -magic_setmglob(sv,mg) -SV* sv; -MAGIC* mg; +magic_getdefelem(SV *sv, MAGIC *mg) +{ + SV *targ = Nullsv; + if (LvTARGLEN(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 + targ = LvTARG(sv); + sv_setsv(sv, targ ? targ : &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; +} + +int +magic_freedefelem(SV *sv, MAGIC *mg) +{ + SvREFCNT_dec(LvTARG(sv)); + return 0; +} + +void +vivify_defelem(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 +magic_setmglob(SV *sv, MAGIC *mg) { - mg->mg_ptr = 0; - mg->mg_len = 0; + mg->mg_len = -1; + SvSCREAM_off(sv); return 0; } int -magic_setbm(sv,mg) -SV* sv; -MAGIC* mg; +magic_setbm(SV *sv, MAGIC *mg) { - mg_free(sv, 'B'); + sv_unmagic(sv, 'B'); SvVALID_off(sv); return 0; } int -magic_setuvar(sv,mg) -SV* sv; -MAGIC* mg; +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; @@ -593,204 +1380,321 @@ MAGIC* mg; } int -magic_set(sv,mg) -SV* sv; -MAGIC* mg; +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) +{ + /* + * René 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(bodytarget, sv); + break; case '\004': /* ^D */ - debug = (SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)) | 32768; + 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 */ - maxsysfd = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + maxsysfd = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); + break; + case '\010': /* ^H */ + hints = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); break; case '\t': /* ^I */ if (inplace) Safefree(inplace); if (SvOK(sv)) - inplace = savestr(SvPV(sv)); + inplace = savepv(SvPV(sv,na)); else inplace = Nullch; break; + case '\017': /* ^O */ + if (osname) + Safefree(osname); + if (SvOK(sv)) + osname = savepv(SvPV(sv,na)); + else + osname = Nullch; + break; case '\020': /* ^P */ - i = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); - if (i != perldb) { - if (perldb) - oldlastpm = curpm; - else - curpm = oldlastpm; - } - perldb = i; + perldb = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); break; case '\024': /* ^T */ - basetime = (time_t)(SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)); +#ifdef BIG_TIME + basetime = (Time_t)(SvNOK(sv) ? SvNVX(sv) : sv_2nv(sv)); +#else + basetime = (Time_t)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); +#endif break; case '\027': /* ^W */ - dowarn = (bool)(SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)); + dowarn = (bool)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); break; case '.': - if (localizing) - save_sptr((SV**)&last_in_gv); + if (localizing) { + if (localizing == 1) + save_sptr((SV**)&last_in_gv); + } + else if (SvOK(sv) && GvIO(last_in_gv)) + IoLINES(GvIOp(last_in_gv)) = (long)SvIV(sv); break; case '^': - Safefree(GvIO(defoutgv)->top_name); - GvIO(defoutgv)->top_name = s = savestr(SvPV(sv)); - GvIO(defoutgv)->top_gv = gv_fetchpv(s,TRUE); + Safefree(IoTOP_NAME(GvIOp(defoutgv))); + IoTOP_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); + IoTOP_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); break; case '~': - Safefree(GvIO(defoutgv)->fmt_name); - GvIO(defoutgv)->fmt_name = s = savestr(SvPV(sv)); - GvIO(defoutgv)->fmt_gv = gv_fetchpv(s,TRUE); + Safefree(IoFMT_NAME(GvIOp(defoutgv))); + IoFMT_NAME(GvIOp(defoutgv)) = s = savepv(SvPV(sv,na)); + IoFMT_GV(GvIOp(defoutgv)) = gv_fetchpv(s,TRUE, SVt_PVIO); break; case '=': - GvIO(defoutgv)->page_len = (long)(SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)); + IoPAGE_LEN(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); break; case '-': - GvIO(defoutgv)->lines_left = (long)(SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)); - if (GvIO(defoutgv)->lines_left < 0L) - GvIO(defoutgv)->lines_left = 0L; + IoLINES_LEFT(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); + if (IoLINES_LEFT(GvIOp(defoutgv)) < 0L) + IoLINES_LEFT(GvIOp(defoutgv)) = 0L; break; case '%': - GvIO(defoutgv)->page = (long)(SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)); + IoPAGE(GvIOp(defoutgv)) = (long)(SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv)); break; case '|': - if (!GvIO(defoutgv)) - GvIO(defoutgv) = newIO(); - GvIO(defoutgv)->flags &= ~IOf_FLUSH; - if ((SvIOK(sv) ? SvIV(sv) : sv_2iv(sv)) != 0) { - GvIO(defoutgv)->flags |= 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 '*': - i = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + i = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); multiline = (i != 0); break; case '/': - if (SvPOK(sv)) { - nrs = rs = SvPV(sv); - nrslen = rslen = SvCUR(sv); - if (rspara = !rslen) { - nrs = rs = "\n\n"; - nrslen = rslen = 2; - } - nrschar = rschar = rs[rslen - 1]; - } - else { - nrschar = rschar = 0777; /* fake a non-existent char */ - nrslen = rslen = 1; - } + SvREFCNT_dec(nrs); + nrs = newSVsv(sv); + SvREFCNT_dec(rs); + rs = SvREFCNT_inc(nrs); break; case '\\': if (ors) Safefree(ors); - ors = savestr(SvPV(sv)); - orslen = SvCUR(sv); + if (SvOK(sv) || SvGMAGICAL(sv)) + ors = savepv(SvPV(sv,orslen)); + else { + ors = Nullch; + orslen = 0; + } break; case ',': if (ofs) Safefree(ofs); - ofs = savestr(SvPV(sv)); - ofslen = SvCUR(sv); + ofs = savepv(SvPV(sv, ofslen)); break; case '#': if (ofmt) Safefree(ofmt); - ofmt = savestr(SvPV(sv)); + ofmt = savepv(SvPV(sv,na)); break; case '[': - arybase = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + compiling.cop_arybase = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); break; case '?': - statusvalue = U_S(SvIOK(sv) ? SvIV(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 '!': - errno = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); /* will anyone ever use this? */ + SETERRNO(SvIOK(sv) ? SvIVX(sv) : SvOK(sv) ? sv_2iv(sv) : 0, + (SvIV(sv) == EVMSERR) ? 4 : vaxc$errno); break; case '<': - uid = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + uid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); if (delaymagic) { delaymagic |= DM_RUID; break; /* don't do magic till later */ } #ifdef HAS_SETRUID - (void)setruid((UIDTYPE)uid); + (void)setruid((Uid_t)uid); #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)uid, (UIDTYPE)-1); + (void)setreuid((Uid_t)uid, (Uid_t)-1); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)uid, (Uid_t)-1, (Uid_t)-1); #else if (uid == euid) /* special case $< = $> */ (void)setuid(uid); - else - fatal("setruid() not implemented"); + else { + uid = (I32)getuid(); + croak("setruid() not implemented"); + } #endif #endif - uid = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); +#endif + uid = (I32)getuid(); + tainting |= (uid && (euid != uid || egid != gid)); break; case '>': - euid = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + euid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); if (delaymagic) { delaymagic |= DM_EUID; break; /* don't do magic till later */ } #ifdef HAS_SETEUID - (void)seteuid((UIDTYPE)euid); + (void)seteuid((Uid_t)euid); #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1, (UIDTYPE)euid); + (void)setreuid((Uid_t)-1, (Uid_t)euid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1, (Uid_t)euid, (Uid_t)-1); #else if (euid == uid) /* special case $> = $< */ setuid(euid); - else - fatal("seteuid() not implemented"); + else { + euid = (I32)geteuid(); + croak("seteuid() not implemented"); + } +#endif #endif #endif euid = (I32)geteuid(); + tainting |= (uid && (euid != uid || egid != gid)); break; case '(': - gid = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); + gid = SvIOK(sv) ? SvIVX(sv) : sv_2iv(sv); if (delaymagic) { delaymagic |= DM_RGID; break; /* don't do magic till later */ } #ifdef HAS_SETRGID - (void)setrgid((GIDTYPE)gid); + (void)setrgid((Gid_t)gid); #else #ifdef HAS_SETREGID - (void)setregid((GIDTYPE)gid, (GIDTYPE)-1); + (void)setregid((Gid_t)gid, (Gid_t)-1); +#else +#ifdef HAS_SETRESGID + (void)setresgid((Gid_t)gid, (Gid_t)-1, (Gid_t) 1); #else if (gid == egid) /* special case $( = $) */ (void)setgid(gid); - else - fatal("setrgid() not implemented"); + else { + gid = (I32)getgid(); + croak("setrgid() not implemented"); + } +#endif #endif #endif gid = (I32)getgid(); + tainting |= (uid && (euid != uid || egid != gid)); break; case ')': - egid = SvIOK(sv) ? SvIV(sv) : sv_2iv(sv); +#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 */ } #ifdef HAS_SETEGID - (void)setegid((GIDTYPE)egid); + (void)setegid((Gid_t)egid); #else #ifdef HAS_SETREGID - (void)setregid((GIDTYPE)-1, (GIDTYPE)egid); + (void)setregid((Gid_t)-1, (Gid_t)egid); +#else +#ifdef HAS_SETRESGID + (void)setresgid((Gid_t)-1, (Gid_t)egid, (Gid_t)-1); #else if (egid == gid) /* special case $) = $( */ (void)setgid(egid); - else - fatal("setegid() not implemented"); + else { + egid = (I32)getegid(); + croak("setegid() not implemented"); + } +#endif #endif #endif egid = (I32)getegid(); + tainting |= (uid && (euid != uid || egid != gid)); break; case ':': - chopset = SvPV(sv); + chopset = SvPV_force(sv,na); break; case '0': if (!origalen) { @@ -798,25 +1702,40 @@ MAGIC* mg; s += strlen(s); /* See if all the arguments are contiguous in memory */ for (i = 1; i < origargc; i++) { - if (origargv[i] == s + 1) + if (origargv[i] == s + 1 +#ifdef OS2 + || origargv[i] == s + 2 +#endif + ) s += strlen(++s); /* this one is ok too */ + else + break; } - if (origenviron[0] == s + 1) { /* can grab env area too? */ - my_setenv("NoNeSuCh", Nullch); + /* can grab env area too? */ + if (origenviron && (origenviron[0] == s + 1 +#ifdef OS2 + || (origenviron[0] == s + 9 && (s += 8)) +#endif + )) { + my_setenv("NoNe SuCh", Nullch); /* force copy of environment */ for (i = 0; origenviron[i]; i++) if (origenviron[i] == s + 1) s += strlen(++s); + else + break; } origalen = s - origargv[0]; } - s = SvPV(sv); - i = SvCUR(sv); + s = SvPV_force(sv,len); + i = len; if (i >= origalen) { i = origalen; - SvCUR_set(sv, i); - *SvEND(sv) = '\0'; + /* don't allow system to limit $0 seen by script */ + /* SvCUR_set(sv, i); *SvEND(sv) = '\0'; */ Copy(s, origargv[0], i, char); + s = origargv[0]+i; + *s = '\0'; } else { Copy(s, origargv[0], i, char); @@ -824,21 +1743,44 @@ MAGIC* mg; *s++ = '\0'; while (++i < origalen) *s++ = ' '; + s = origargv[0]+i; + for (i = 1; i < origargc; i++) + 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_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)); + SvREFCNT_dec(sv); + return 0; +} +#endif /* USE_THREADS */ + I32 -whichsig(sig) -char *sig; +whichsig(char *sig) { register char **sigv; for (sigv = sig_name+1; *sigv; sigv++) if (strEQ(sig,*sigv)) - return sigv - sig_name; + return sig_num[sigv - sig_name]; #ifdef SIGCLD if (strEQ(sig,"CHLD")) return SIGCLD; @@ -850,72 +1792,110 @@ char *sig; return 0; } -static handlertype -sighandler(sig) -I32 sig; +static SV* sig_sv; + +static void +unwind_handler_stack(void *p) +{ + dTHR; + U32 flags = *(U32*)p; + + if (flags & 1) + 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; - SV *sv; - CV *cv; - CONTEXT *cx; - AV *oldstack; - I32 hasargs = 1; - I32 items = 1; - I32 gimme = G_SCALAR; - -#ifdef OS2 /* or anybody else who requires SIG_ACK */ - signal(sig, SIG_ACK); -#endif - - gv = gv_fetchpv( - SvPVnx(*hv_fetch(GvHVn(siggv),sig_name[sig],strlen(sig_name[sig]), - TRUE)), TRUE); - cv = GvCV(gv); - if (!cv && *sig_name[sig] == 'C' && instr(sig_name[sig],"LD")) { - if (sig_name[sig][1] == 'H') - gv = gv_fetchpv(SvPVnx(*hv_fetch(GvHVn(siggv),"CLD",3,TRUE)), - TRUE); - else - gv = gv_fetchpv(SvPVnx(*hv_fetch(GvHVn(siggv),"CHLD",4,TRUE)), - TRUE); - cv = GvCV(gv); /* gag */ + GV *gv = Nullgv; + HV *st; + SV *sv, *tSv = Sv; + CV *cv = Nullcv; + OP *myop = op; + U32 flags = 0; + I32 o_save_i = savestack_ix, type; + XPV *tXpv = Xpv; + + if (savestack_ix + 15 <= savestack_max) + flags |= 1; + if (markstack_ptr < markstack_max - 2) + flags |= 4; + if (retstack_ix < retstack_max - 2) + flags |= 8; + if (scopestack_ix < 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) { + savestack_ix += 5; /* Protect save in progress. */ + o_save_i = savestack_ix; + SAVEDESTRUCTOR(unwind_handler_stack, (void*)&flags); } - if (!cv) { + if (flags & 4) + markstack_ptr++; /* Protect mark. */ + if (flags & 8) { + retstack_ix++; + retstack[retstack_ix] = NULL; + } + if (flags & 16) + 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 (dowarn) warn("SIG%s handler \"%s\" not defined.\n", - sig_name[sig], GvENAME(gv) ); - return; + sig_name[sig], (gv ? GvENAME(gv) + : ((cv && CvGV(cv)) + ? GvENAME(CvGV(cv)) + : "__ANON__"))); + goto cleanup; } - oldstack = stack; - SWITCHSTACK(stack, signalstack); + 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]); + } - sv = sv_mortalcopy(&sv_undef); - sv_setpv(sv,sig_name[sig]); + PUSHSTACK(SI_SIGNAL); + PUSHMARK(SP); PUSHs(sv); - - ENTER; - SAVETMPS; - - push_return(op); - push_return(0); - PUSHBLOCK(cx, CXt_SUB, sp); - PUSHSUB(cx); - cx->blk_sub.savearray = GvAV(defgv); - cx->blk_sub.argarray = av_fake(items, sp); - GvAV(defgv) = cx->blk_sub.argarray; - CvDEPTH(cv)++; - if (CvDEPTH(cv) >= 2) { - if (CvDEPTH(cv) == 100 && dowarn) - warn("Deep recursion on subroutine \"%s\"",GvENAME(gv)); - } - op = CvSTART(cv); PUTBACK; - run(); /* Does the LEAVE for us. */ - SWITCHSTACK(signalstack, oldstack); - op = pop_return(); + perl_call_sv((SV*)cv, G_DISCARD); + POPSTACK(); +cleanup: + if (flags & 1) + savestack_ix -= 8; /* Unprotect save in progress. */ + if (flags & 4) + markstack_ptr--; + if (flags & 8) + retstack_ix--; + if (flags & 16) + scopestack_ix -= 1; + if (flags & 64) + SvREFCNT_dec(sv); + op = myop; /* Apparently not needed... */ + + Sv = tSv; /* Restore global temporaries. */ + Xpv = tXpv; return; } + +