/* perl.c
*
- * Copyright (c) 1987-1994 Larry Wall
+ * Copyright (c) 1987-1996 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 "perl.h"
#include "patchlevel.h"
-/* Omit -- it causes too much grief on mixed systems.
+/* XXX If this causes problems, set i_unistd=undef in the hint file. */
#ifdef I_UNISTD
#include <unistd.h>
#endif
-*/
-char rcsid[] = "perl.c\nPatch level: ###\n";
+dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n";
#ifdef IAMSUID
#ifndef DOSUID
#endif
#endif
+#define I_REINIT \
+ STMT_START { \
+ chopset = " \n-"; \
+ copline = NOLINE; \
+ curcop = &compiling; \
+ curcopdb = NULL; \
+ cxstack_ix = -1; \
+ cxstack_max = 128; \
+ dbargs = 0; \
+ dlmax = 128; \
+ laststatval = -1; \
+ laststype = OP_STAT; \
+ maxscream = -1; \
+ maxsysfd = MAXSYSFD; \
+ statname = Nullsv; \
+ tmps_floor = -1; \
+ tmps_ix = -1; \
+ op_mask = NULL; \
+ dlmax = 128; \
+ laststatval = -1; \
+ laststype = OP_STAT; \
+ } STMT_END
+
static void find_beginning _((void));
+static void forbid_setid _((char *));
static void incpush _((char *));
+static void init_ids _((void));
static void init_debugger _((void));
static void init_lexer _((void));
static void init_main_stash _((void));
static void init_postdump_symbols _((int, char **, char **));
static void init_predump_symbols _((void));
static void init_stacks _((void));
+static void nuke_stacks _((void));
static void open_script _((char *, bool, SV *));
-static void validate_suid _((char *));
+static void usage _((char *));
+static void validate_suid _((char *, char*));
+
+static int fdscript = -1;
PerlInterpreter *
perl_alloc()
perl_construct( sv_interp )
register PerlInterpreter *sv_interp;
{
- char* s;
-
if (!(curinterp = sv_interp))
return;
linestr = NEWSV(65,80);
sv_upgrade(linestr,SVt_PVIV);
- SvREADONLY_on(&sv_undef);
+ if (!SvREADONLY(&sv_undef)) {
+ SvREADONLY_on(&sv_undef);
- sv_setpv(&sv_no,No);
- SvNV(&sv_no);
- SvREADONLY_on(&sv_no);
+ sv_setpv(&sv_no,No);
+ SvNV(&sv_no);
+ SvREADONLY_on(&sv_no);
- sv_setpv(&sv_yes,Yes);
- SvNV(&sv_yes);
- SvREADONLY_on(&sv_yes);
+ sv_setpv(&sv_yes,Yes);
+ SvNV(&sv_yes);
+ SvREADONLY_on(&sv_yes);
+ }
+
+ nrs = newSVpv("\n", 1);
+ rs = SvREFCNT_inc(nrs);
+
+ pidstatus = newHV();
#ifdef MSDOS
/*
}
#ifdef MULTIPLICITY
- chopset = " \n-";
- copline = NOLINE;
- curcop = &compiling;
- dlmax = 128;
- laststatval = -1;
- laststype = OP_STAT;
- maxscream = -1;
- maxsysfd = MAXSYSFD;
- nrs = "\n";
- nrschar = '\n';
- nrslen = 1;
- rs = "\n";
- rschar = '\n';
- rsfp = Nullfp;
- rslen = 1;
- statname = Nullsv;
- tmps_floor = -1;
+ I_REINIT;
+ perl_destruct_level = 1;
+#else
+ if(perl_destruct_level > 0)
+ I_REINIT;
#endif
- uid = (int)getuid();
- euid = (int)geteuid();
- gid = (int)getgid();
- egid = (int)getegid();
-#ifdef VMS
- uid |= gid << 16;
- euid |= egid << 16;
+ init_ids();
+
+ SET_NUMERIC_STANDARD();
+#if defined(SUBVERSION) && SUBVERSION > 0
+ sprintf(patchlevel, "%7.5f", (double) 5
+ + ((double) PATCHLEVEL / (double) 1000)
+ + ((double) SUBVERSION / (double) 100000));
+#else
+ sprintf(patchlevel, "%5.3f", (double) 5 +
+ ((double) PATCHLEVEL / (double) 1000));
+#endif
+
+#if defined(LOCAL_PATCH_COUNT)
+ localpatches = local_patches; /* For possible -v */
#endif
- tainting = (euid != uid || egid != gid);
- sprintf(patchlevel, "%5.3f", 5.0 + (PATCHLEVEL / 1000.0));
+
+ PerlIO_init(); /* Hook to IO system */
fdpid = newAV(); /* for remembering popen pids by fd */
- pidstatus = newHV();/* for remembering status of dead pids */
init_stacks();
ENTER;
}
void
-perl_destruct(sv_interp, destruct_level)
+perl_destruct(sv_interp)
register PerlInterpreter *sv_interp;
-int destruct_level; /* 0=none, 1=full, 2=full with checks */
{
+ int destruct_level; /* 0=none, 1=full, 2=full with checks */
I32 last_sv_count;
HV *hv;
if (!(curinterp = sv_interp))
return;
+
+ destruct_level = perl_destruct_level;
+#ifdef DEBUGGING
+ {
+ char *s;
+ if (s = getenv("PERL_DESTRUCT_LEVEL")) {
+ int i = atoi(s);
+ if (destruct_level < i)
+ destruct_level = i;
+ }
+ }
+#endif
+
+ /* unhook hooks which will soon be, or use, destroyed data */
+ SvREFCNT_dec(warnhook);
+ warnhook = Nullsv;
+ SvREFCNT_dec(diehook);
+ diehook = Nullsv;
+ SvREFCNT_dec(parsehook);
+ parsehook = Nullsv;
+
LEAVE;
FREETMPS;
- if (sv_objcount) {
- /* We must account for everything. First the syntax tree. */
- if (main_root) {
- curpad = AvARRAY(comppad);
- op_free(main_root);
- main_root = 0;
- }
+ /* We must account for everything. First the syntax tree. */
+ if (main_root) {
+ curpad = AvARRAY(comppad);
+ op_free(main_root);
+ main_root = 0;
}
if (sv_objcount) {
/*
/* The exit() function will do everything that needs doing. */
return;
}
-
+
+ /* loosen bonds of global variables */
+
+ if(rsfp) {
+ (void)PerlIO_close(rsfp);
+ rsfp = Nullfp;
+ }
+
+ /* Filters for program text */
+ SvREFCNT_dec(rsfp_filters);
+ rsfp_filters = Nullav;
+
+ /* switches */
+ preprocess = FALSE;
+ minus_n = FALSE;
+ minus_p = FALSE;
+ minus_l = FALSE;
+ minus_a = FALSE;
+ minus_F = FALSE;
+ doswitches = FALSE;
+ dowarn = FALSE;
+ doextract = FALSE;
+ sawampersand = FALSE; /* must save all match strings */
+ sawstudy = FALSE; /* do fbm_instr on all strings */
+ sawvec = FALSE;
+ unsafe = FALSE;
+
+ Safefree(inplace);
+ inplace = Nullch;
+
+ Safefree(e_tmpname);
+ e_tmpname = Nullch;
+
+ if (e_fp) {
+ PerlIO_close(e_fp);
+ e_fp = Nullfp;
+ }
+
+ /* magical thingies */
+
+ Safefree(ofs); /* $, */
+ ofs = Nullch;
+
+ Safefree(ors); /* $\ */
+ ors = Nullch;
+
+ SvREFCNT_dec(nrs); /* $\ helper */
+ nrs = Nullsv;
+
+ multiline = 0; /* $* */
+
+ SvREFCNT_dec(statname);
+ statname = Nullsv;
+ statgv = Nullgv;
+
+ /* defgv, aka *_ should be taken care of elsewhere */
+
+#if 0 /* just about all regexp stuff, seems to be ok */
+
+ /* shortcuts to regexp stuff */
+ leftgv = Nullgv;
+ ampergv = Nullgv;
+
+ SAVEFREEOP(curpm);
+ SAVEFREEOP(oldlastpm); /* for saving regexp context during debugger */
+
+ regprecomp = NULL; /* uncompiled string. */
+ regparse = NULL; /* Input-scan pointer. */
+ regxend = NULL; /* End of input for compile */
+ regnpar = 0; /* () count. */
+ regcode = NULL; /* Code-emit pointer; ®dummy = don't. */
+ regsize = 0; /* Code size. */
+ regnaughty = 0; /* How bad is this pattern? */
+ regsawback = 0; /* Did we see \1, ...? */
+
+ reginput = NULL; /* String-input pointer. */
+ regbol = NULL; /* Beginning of input, for ^ check. */
+ regeol = NULL; /* End of input, for $ check. */
+ regstartp = (char **)NULL; /* Pointer to startp array. */
+ regendp = (char **)NULL; /* Ditto for endp. */
+ reglastparen = 0; /* Similarly for lastparen. */
+ regtill = NULL; /* How far we are required to go. */
+ regflags = 0; /* are we folding, multilining? */
+ regprev = (char)NULL; /* char before regbol, \n if none */
+
+#endif /* if 0 */
+
+ /* clean up after study() */
+ SvREFCNT_dec(lastscream);
+ lastscream = Nullsv;
+ Safefree(screamfirst);
+ screamfirst = 0;
+ Safefree(screamnext);
+ screamnext = 0;
+
+ /* startup and shutdown function lists */
+ SvREFCNT_dec(beginav);
+ SvREFCNT_dec(endav);
+ beginav = Nullav;
+ endav = Nullav;
+
+ /* temp stack during pp_sort() */
+ SvREFCNT_dec(sortstack);
+ sortstack = Nullav;
+
+ /* shortcuts just get cleared */
+ envgv = Nullgv;
+ siggv = Nullgv;
+ incgv = Nullgv;
+ errgv = Nullgv;
+ argvgv = Nullgv;
+ argvoutgv = Nullgv;
+ stdingv = Nullgv;
+ last_in_gv = Nullgv;
+
+ /* reset so print() ends up where we expect */
+ setdefout(Nullgv);
+
/* Prepare to destruct main symbol table. */
+
hv = defstash;
defstash = 0;
SvREFCNT_dec(hv);
/* Now absolutely destruct everything, somehow or other, loops or no. */
last_sv_count = 0;
+ SvFLAGS(strtab) |= SVTYPEMASK; /* don't clean out strtab now */
while (sv_count != 0 && sv_count != last_sv_count) {
last_sv_count = sv_count;
sv_clean_all();
}
+ SvFLAGS(strtab) &= ~SVTYPEMASK;
+ SvFLAGS(strtab) |= SVt_PVHV;
+
+ /* Destruct the global string table. */
+ {
+ /* Yell and reset the HeVAL() slots that are still holding refcounts,
+ * so that sv_free() won't fail on them.
+ */
+ I32 riter;
+ I32 max;
+ HE *hent;
+ HE **array;
+
+ riter = 0;
+ max = HvMAX(strtab);
+ array = HvARRAY(strtab);
+ hent = array[0];
+ for (;;) {
+ if (hent) {
+ warn("Unbalanced string table refcount: (%d) for \"%s\"",
+ HeVAL(hent) - Nullsv, HeKEY(hent));
+ HeVAL(hent) = Nullsv;
+ hent = HeNEXT(hent);
+ }
+ if (!hent) {
+ if (++riter > max)
+ break;
+ hent = array[riter];
+ }
+ }
+ }
+ SvREFCNT_dec(strtab);
+
if (sv_count != 0)
warn("Scalars leaked: %d\n", sv_count);
+
+ sv_free_arenas();
+
+ /* No SVs have survived, need to clean out */
+ linestr = NULL;
+ pidstatus = Nullhv;
+ if (origfilename)
+ Safefree(origfilename);
+ nuke_stacks();
+ hints = 0; /* Reset hints. Should hints be per-interpreter ? */
DEBUG_P(debprofdump());
}
{
register SV *sv;
register char *s;
- char *scriptname;
+ char *scriptname = NULL;
VOL bool dosearch = FALSE;
char *validarg = "";
+ AV* comppadlist;
#ifdef SETUID_SCRIPTS_ARE_SECURE_NOW
#ifdef IAMSUID
if (!(curinterp = sv_interp))
return 255;
+#if defined(NeXT) && defined(__DYNAMIC__)
+ _dyld_lookup_and_bind
+ ("__environ", (unsigned long *) &environ_pointer, NULL);
+#endif /* environ */
+
origargv = argv;
origargc = argc;
#ifndef VMS /* VMS doesn't have environ array */
origenviron = environ;
#endif
+ e_tmpname = Nullch;
if (do_undump) {
origfilename = savepv(argv[0]);
do_undump = FALSE;
cxstack_ix = -1; /* start label stack again */
+ init_ids();
init_postdump_symbols(argc,argv,env);
return 0;
}
op_free(main_root);
main_root = 0;
- switch (setjmp(top_env)) {
+ switch (Sigsetjmp(top_env,1)) {
case 1:
+#ifdef VMS
statusvalue = 255;
+#else
+ statusvalue = 1;
+#endif
case 2:
curstash = defstash;
if (endav)
calllist(endav);
return(statusvalue); /* my_exit() was called */
case 3:
- fprintf(stderr, "panic: top_env\n");
+ PerlIO_printf(PerlIO_stderr(), "panic: top_env\n");
return 1;
}
case 'c':
case 'd':
case 'D':
+ case 'h':
case 'i':
case 'l':
+ case 'M':
+ case 'm':
case 'n':
case 'p':
case 's':
(void)mktemp(e_tmpname);
if (!*e_tmpname)
croak("Can't mktemp()");
- e_fp = fopen(e_tmpname,"w");
+ e_fp = PerlIO_open(e_tmpname,"w");
if (!e_fp)
croak("Cannot open temporary file");
}
- if (argv[1]) {
- fputs(argv[1],e_fp);
+ if (*++s)
+ PerlIO_puts(e_fp,s);
+ else if (argv[1]) {
+ PerlIO_puts(e_fp,argv[1]);
argc--,argv++;
}
- (void)putc('\n', e_fp);
+ else
+ croak("No code specified for -e");
+ (void)PerlIO_putc(e_fp,'\n');
break;
case 'I':
- taint_not("-I");
+ forbid_setid("-I");
sv_catpv(sv,"-");
sv_catpv(sv,s);
sv_catpv(sv," ");
}
break;
case 'P':
- taint_not("-P");
+ forbid_setid("-P");
preprocess = TRUE;
s++;
goto reswitch;
case 'S':
- taint_not("-S");
+ forbid_setid("-S");
dosearch = TRUE;
s++;
goto reswitch;
+ case 'V':
+ if (!preambleav)
+ preambleav = newAV();
+ av_push(preambleav, newSVpv("use Config qw(myconfig config_vars)",0));
+ if (*++s != ':') {
+ Sv = newSVpv("print myconfig();",0);
+#ifdef VMS
+ sv_catpv(Sv,"print \"\\nCharacteristics of this PERLSHR image: \\n\",");
+#else
+ sv_catpv(Sv,"print \"\\nCharacteristics of this binary (from libperl): \\n\",");
+#endif
+#if defined(DEBUGGING) || defined(NOEMBED) || defined(MULTIPLICITY)
+ strcpy(buf,"\" Compile-time options:");
+# ifdef DEBUGGING
+ strcat(buf," DEBUGGING");
+# endif
+# ifdef NOEMBED
+ strcat(buf," NOEMBED");
+# endif
+# ifdef MULTIPLICITY
+ strcat(buf," MULTIPLICITY");
+# endif
+ strcat(buf,"\\n\",");
+ sv_catpv(Sv,buf);
+#endif
+#if defined(LOCAL_PATCH_COUNT)
+ if (LOCAL_PATCH_COUNT > 0)
+ { int i;
+ sv_catpv(Sv,"print \" Locally applied patches:\\n\",");
+ for (i = 1; i <= LOCAL_PATCH_COUNT; i++) {
+ if (localpatches[i]) {
+ sprintf(buf,"\" \\t%s\\n\",",localpatches[i]);
+ sv_catpv(Sv,buf);
+ }
+ }
+ }
+#endif
+ sprintf(buf,"\" Built under %s\\n\",",OSNAME);
+ sv_catpv(Sv,buf);
+#ifdef __DATE__
+# ifdef __TIME__
+ sprintf(buf,"\" Compiled at %s %s\\n\"",__DATE__,__TIME__);
+# else
+ sprintf(buf,"\" Compiled on %s\\n\"",__DATE__);
+# endif
+ sv_catpv(Sv,buf);
+#endif
+ sv_catpv(Sv,"; $\"=\"\\n \"; print \" \\@INC:\\n @INC\\n\"");
+ }
+ else {
+ Sv = newSVpv("config_vars(qw(",0);
+ sv_catpv(Sv, ++s);
+ sv_catpv(Sv, "))");
+ s += strlen(s);
+ }
+ av_push(preambleav, Sv);
+ scriptname = BIT_BUCKET; /* don't look for script or read stdin */
+ goto reswitch;
case 'x':
doextract = TRUE;
s++;
}
}
switch_end:
- scriptname = argv[0];
+ if (!scriptname)
+ scriptname = argv[0];
if (e_fp) {
- if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp))
+ if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp))
croak("Can't write to temp file for -e: %s", Strerror(errno));
+ e_fp = Nullfp;
argc++,argv--;
scriptname = e_tmpname;
}
else if (scriptname == Nullch) {
#ifdef MSDOS
- if ( isatty(fileno(stdin)) )
- moreswitches("v");
+ if ( isatty(PerlIO_fileno(PerlIO_stdin())) )
+ moreswitches("h");
#endif
scriptname = "-";
}
open_script(scriptname,dosearch,sv);
- validate_suid(validarg);
+ validate_suid(validarg, scriptname);
if (doextract)
find_beginning();
- pad = newAV();
- comppad = pad;
+ compcv = (CV*)NEWSV(1104,0);
+ sv_upgrade((SV *)compcv, SVt_PVCV);
+ CvUNIQUE_on(compcv);
+
+ comppad = newAV();
av_push(comppad, Nullsv);
curpad = AvARRAY(comppad);
- padname = newAV();
- comppad_name = padname;
+ comppad_name = newAV();
comppad_name_fill = 0;
min_intro_pending = 0;
padix = 0;
+ comppadlist = newAV();
+ AvREAL_off(comppadlist);
+ av_store(comppadlist, 0, (SV*)comppad_name);
+ av_store(comppadlist, 1, (SV*)comppad);
+ CvPADLIST(compcv) = comppadlist;
+
+ boot_core_UNIVERSAL();
if (xsinit)
(*xsinit)(); /* in case linked C routines want magical variables */
+#ifdef VMS
+ init_os_extras();
+#endif
init_predump_symbols();
if (!do_undump)
curcop->cop_line = 0;
curstash = defstash;
preprocess = FALSE;
- if (e_fp) {
- e_fp = Nullfp;
+ if (e_tmpname) {
(void)UNLINK(e_tmpname);
+ Safefree(e_tmpname);
+ e_tmpname = Nullch;
}
/* now that script is parsed, we can modify record separator */
-
- rs = nrs;
- rslen = nrslen;
- rschar = nrschar;
- rspara = (nrslen == 2);
- sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs, rslen);
+ SvREFCNT_dec(rs);
+ rs = SvREFCNT_inc(nrs);
+ sv_setsv(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs);
if (do_undump)
my_unexec();
LEAVE;
FREETMPS;
+
+#ifdef DEBUGGING_MSTATS
+ if ((s=getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2)
+ dump_mstats("after compilation:");
+#endif
+
ENTER;
restartop = 0;
return 0;
{
if (!(curinterp = sv_interp))
return 255;
- switch (setjmp(top_env)) {
+ switch (Sigsetjmp(top_env,1)) {
case 1:
cxstack_ix = -1; /* start context stack again */
break;
if (endav)
calllist(endav);
FREETMPS;
+#ifdef DEBUGGING_MSTATS
+ if (getenv("PERL_DEBUG_MSTATS"))
+ dump_mstats("after execution: ");
+#endif
return(statusvalue); /* my_exit() was called */
case 3:
if (!restartop) {
- fprintf(stderr, "panic: restartop\n");
+ PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
FREETMPS;
return 1;
}
- if (stack != mainstack) {
+ if (curstack != mainstack) {
dSP;
- SWITCHSTACK(stack, mainstack);
+ SWITCHSTACK(curstack, mainstack);
}
break;
}
+ DEBUG_r(PerlIO_printf(PerlIO_stderr(), "%s $` $& $' support.\n",
+ sawampersand ? "Enabling" : "Omitting"));
+
if (!restartop) {
DEBUG_x(dump_all());
- DEBUG(fprintf(stderr,"\nEXECUTING...\n\n"));
+ DEBUG(PerlIO_printf(Perl_debug_log, "\nEXECUTING...\n\n"));
if (minus_c) {
- fprintf(stderr,"%s syntax OK\n", origfilename);
+ PerlIO_printf(PerlIO_stderr(), "%s syntax OK\n", origfilename);
my_exit(0);
}
if (perldb && DBsingle)
if (restartop) {
op = restartop;
restartop = 0;
- run();
+ runops();
}
else if (main_start) {
op = main_start;
- run();
+ runops();
}
my_exit(0);
void
my_exit(status)
-I32 status;
+U32 status;
{
register CONTEXT *cx;
I32 gimme;
SV **newsp;
- statusvalue = (unsigned short)(status & 0xffff);
+ statusvalue = FIXSTATUS(status);
if (cxstack_ix >= 0) {
if (cxstack_ix > 0)
dounwind(0);
POPBLOCK(cx,curpm);
LEAVE;
}
- longjmp(top_env, 2);
+ Siglongjmp(top_env, 2);
}
SV*
I32 create;
{
GV* gv = gv_fetchpv(name, create, SVt_PVCV);
- if (create && !GvCV(gv))
+ if (create && !GvCVu(gv))
return newSUB(start_subparse(),
newSVOP(OP_CONST, 0, newSVpv(name,0)),
+ Nullop,
Nullop);
if (gv)
- return GvCV(gv);
+ return GvCVu(gv);
return Nullcv;
}
SV** sp = stack_sp;
I32 oldmark = TOPMARK;
I32 retval;
- jmp_buf oldtop;
+ Sigjmp_buf oldtop;
I32 oldscope;
+ static CV *DBcv;
if (flags & G_DISCARD) {
ENTER;
if (flags & G_ARRAY)
myop.op_flags |= OPf_LIST;
+ if (perldb && curstash != debstash
+ /* Handle first BEGIN of -d. */
+ && (DBcv || (DBcv = GvCV(DBsub)))
+ /* Try harder, since this may have been a sighandler, thus
+ * curstash may be meaningless. */
+ && (SvTYPE(sv) != SVt_PVCV || CvSTASH((CV*)sv) != debstash))
+ op->op_private |= OPpENTERSUB_DB;
+
if (flags & G_EVAL) {
- Copy(top_env, oldtop, 1, jmp_buf);
+ Copy(top_env, oldtop, 1, Sigjmp_buf);
cLOGOP->op_other = op;
markstack_ptr--;
- pp_entertry();
+ /* we're trying to emulate pp_entertry() here */
+ {
+ register CONTEXT *cx;
+ I32 gimme = GIMME;
+
+ ENTER;
+ SAVETMPS;
+
+ push_return(op->op_next);
+ PUSHBLOCK(cx, CXt_EVAL, stack_sp);
+ PUSHEVAL(cx, 0, 0);
+ eval_root = op; /* Only needed so that goto works right. */
+
+ in_eval = 1;
+ if (flags & G_KEEPERR)
+ in_eval |= 4;
+ else
+ sv_setpv(GvSV(errgv),"");
+ }
markstack_ptr++;
restart:
- switch (setjmp(top_env)) {
+ switch (Sigsetjmp(top_env,1)) {
case 0:
break;
case 1:
+#ifdef VMS
statusvalue = 255; /* XXX I don't think we use 1 anymore. */
+#else
+ statusvalue = 1;
+#endif
/* FALL THROUGH */
case 2:
/* my_exit() was called */
curstash = defstash;
FREETMPS;
- Copy(oldtop, top_env, 1, jmp_buf);
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
if (statusvalue)
croak("Callback called exit");
my_exit(statusvalue);
if (op == (OP*)&myop)
op = pp_entersub();
if (op)
- run();
+ runops();
retval = stack_sp - (stack_base + oldmark);
- if (flags & G_EVAL)
- sv_setpv(GvSV(gv_fetchpv("@",TRUE, SVt_PV)),"");
+ if ((flags & G_EVAL) && !(flags & G_KEEPERR))
+ sv_setpv(GvSV(errgv),"");
cleanup:
if (flags & G_EVAL) {
curpm = newpm;
LEAVE;
}
- Copy(oldtop, top_env, 1, jmp_buf);
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
}
if (flags & G_DISCARD) {
stack_sp = stack_base + oldmark;
return retval;
}
-/* Older forms, here grandfathered. */
-
-#ifdef DEPRECATED
-I32
-perl_callargv(subname, spix, gimme, argv)
-char *subname;
-register I32 spix; /* current stack pointer index */
-I32 gimme; /* See G_* flags in cop.h */
-register char **argv; /* null terminated arg list, NULL for no arglist */
-{
- stack_sp = stack_base + spix;
- return spix + perl_call_argv(subname, gimme, argv);
-}
-
-I32
-perl_callpv(subname, spix, gimme, hasargs, numargs)
-char *subname;
-I32 spix; /* stack pointer index after args are pushed */
-I32 gimme; /* See G_* flags in cop.h */
-I32 hasargs; /* whether to create a @_ array for routine */
-I32 numargs; /* how many args are pushed on the stack */
-{
- stack_sp = stack_base + spix;
- PUSHMARK(stack_sp - numargs);
- return spix - numargs + perl_call_sv((SV*)perl_get_cv(subname, TRUE),
- gimme, hasargs, numargs);
-}
+/* Eval a string. The G_EVAL flag is always assumed. */
I32
-perl_callsv(sv, spix, gimme, hasargs, numargs)
+perl_eval_sv(sv, flags)
SV* sv;
-I32 spix; /* stack pointer index after args are pushed */
-I32 gimme; /* See G_* flags in cop.h */
-I32 hasargs; /* whether to create a @_ array for routine */
-I32 numargs; /* how many args are pushed on the stack */
-{
- stack_sp = stack_base + spix;
- PUSHMARK(stack_sp - numargs);
- return spix - numargs + perl_call_sv(sv, gimme, hasargs, numargs);
-}
-#endif
-
-/* Require a module. */
-
-void
-perl_requirepv(pv)
-char* pv;
+I32 flags; /* See G_* flags in cop.h */
{
UNOP myop; /* fake syntax tree node */
- SV* sv;
- dSP;
+ SV** sp = stack_sp;
+ I32 oldmark = sp - stack_base;
+ I32 retval;
+ Sigjmp_buf oldtop;
+ I32 oldscope;
- ENTER;
- SAVETMPS;
+ if (flags & G_DISCARD) {
+ ENTER;
+ SAVETMPS;
+ }
+
SAVESPTR(op);
- sv = sv_newmortal();
- sv_setpv(sv, pv);
op = (OP*)&myop;
Zero(op, 1, UNOP);
- XPUSHs(sv);
+ EXTEND(stack_sp, 1);
+ *++stack_sp = sv;
+ oldscope = scopestack_ix;
- myop.op_type = OP_REQUIRE;
+ if (!(flags & G_NOARGS))
+ myop.op_flags = OPf_STACKED;
myop.op_next = Nullop;
- myop.op_private = 1;
- myop.op_flags = OPf_KNOW;
+ myop.op_type = OP_ENTEREVAL;
+ myop.op_flags |= OPf_KNOW;
+ if (flags & G_KEEPERR)
+ myop.op_flags |= OPf_SPECIAL;
+ if (flags & G_ARRAY)
+ myop.op_flags |= OPf_LIST;
- PUTBACK;
- if (op = pp_require())
- run();
- stack_sp--;
- FREETMPS;
- LEAVE;
+ Copy(top_env, oldtop, 1, Sigjmp_buf);
+
+restart:
+ switch (Sigsetjmp(top_env,1)) {
+ case 0:
+ break;
+ case 1:
+#ifdef VMS
+ statusvalue = 255; /* XXX I don't think we use 1 anymore. */
+#else
+ statusvalue = 1;
+#endif
+ /* FALL THROUGH */
+ case 2:
+ /* my_exit() was called */
+ curstash = defstash;
+ FREETMPS;
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
+ if (statusvalue)
+ croak("Callback called exit");
+ my_exit(statusvalue);
+ /* NOTREACHED */
+ case 3:
+ if (restartop) {
+ op = restartop;
+ restartop = 0;
+ goto restart;
+ }
+ stack_sp = stack_base + oldmark;
+ if (flags & G_ARRAY)
+ retval = 0;
+ else {
+ retval = 1;
+ *++stack_sp = &sv_undef;
+ }
+ goto cleanup;
+ }
+
+ if (op == (OP*)&myop)
+ op = pp_entereval();
+ if (op)
+ runops();
+ retval = stack_sp - (stack_base + oldmark);
+ if (!(flags & G_KEEPERR))
+ sv_setpv(GvSV(errgv),"");
+
+ cleanup:
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
+ if (flags & G_DISCARD) {
+ stack_sp = stack_base + oldmark;
+ retval = 0;
+ FREETMPS;
+ LEAVE;
+ }
+ return retval;
+}
+
+/* Require a module. */
+
+void
+perl_require_pv(pv)
+char* pv;
+{
+ SV* sv = sv_newmortal();
+ sv_setpv(sv, "require '");
+ sv_catpv(sv, pv);
+ sv_catpv(sv, "'");
+ perl_eval_sv(sv, G_DISCARD);
}
void
sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen);
}
-#ifdef DOSISH
-#define PERLLIB_SEP ';'
+#if defined(DOSISH)
+# define PERLLIB_SEP ';'
#else
-#define PERLLIB_SEP ':'
+# if defined(VMS)
+# define PERLLIB_SEP '|'
+# else
+# define PERLLIB_SEP ':'
+# endif
#endif
+#ifndef PERLLIB_MANGLE
+# define PERLLIB_MANGLE(s,n) (s)
+#endif
static void
incpush(p)
p++;
}
if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) {
- av_push(GvAVn(incgv), newSVpv(p, (STRLEN)(s - p)));
+ av_push(GvAVn(incgv), newSVpv(PERLLIB_MANGLE(p, (STRLEN)(s - p)),
+ (STRLEN)(s - p)));
p = s + 1;
} else {
- av_push(GvAVn(incgv), newSVpv(p, 0));
+ av_push(GvAVn(incgv), newSVpv(PERLLIB_MANGLE(p, 0), 0));
break;
}
}
}
+static void
+usage(name) /* XXX move this out into a module ? */
+char *name;
+{
+ /* This message really ought to be max 23 lines.
+ * Removed -h because the user already knows that opton. Others? */
+ printf("\nUsage: %s [switches] [--] [programfile] [arguments]", name);
+ printf("\n -0[octal] specify record separator (\\0, if no argument)");
+ printf("\n -a autosplit mode with -n or -p (splits $_ into @F)");
+ printf("\n -c check syntax only (runs BEGIN and END blocks)");
+ printf("\n -d[:debugger] run scripts under debugger");
+ printf("\n -D[number/list] set debugging flags (argument is a bit mask or flags)");
+ printf("\n -e 'command' one line of script. Several -e's allowed. Omit [programfile].");
+ printf("\n -F/pattern/ split() pattern for autosplit (-a). The //'s are optional.");
+ printf("\n -i[extension] edit <> files in place (make backup if extension supplied)");
+ printf("\n -Idirectory specify @INC/#include directory (may be used more then once)");
+ printf("\n -l[octal] enable line ending processing, specifies line teminator");
+ printf("\n -[mM][-]module.. executes `use/no module...' before executing your script.");
+ printf("\n -n assume 'while (<>) { ... }' loop arround your script");
+ printf("\n -p assume loop like -n but print line also like sed");
+ printf("\n -P run script through C preprocessor before compilation");
+ printf("\n -s enable some switch parsing for switches after script name");
+ printf("\n -S look for the script using PATH environment variable");
+ printf("\n -T turn on tainting checks");
+ printf("\n -u dump core after parsing script");
+ printf("\n -U allow unsafe operations");
+ printf("\n -v print version number and patchlevel of perl");
+ printf("\n -V[:variable] print perl configuration information");
+ printf("\n -w TURN WARNINGS ON FOR COMPILATION OF YOUR SCRIPT.");
+ printf("\n -x[directory] strip off text before #!perl line and perhaps cd to directory\n");
+}
+
/* This routine handles any switches that can be given during run */
char *
char *s;
{
I32 numlen;
+ U32 rschar;
switch (*s) {
case '0':
- nrschar = scan_oct(s, 4, &numlen);
- nrs = savepvn("\n",1);
- *nrs = nrschar;
- if (nrschar > 0377) {
- nrslen = 0;
- nrs = "";
- }
- else if (!nrschar && numlen >= 2) {
- nrslen = 2;
- nrs = "\n\n";
- nrschar = '\n';
+ rschar = scan_oct(s, 4, &numlen);
+ SvREFCNT_dec(nrs);
+ if (rschar & ~((U8)~0))
+ nrs = &sv_undef;
+ else if (!rschar && numlen >= 2)
+ nrs = newSVpv("", 0);
+ else {
+ char ch = rschar;
+ nrs = newSVpv(&ch, 1);
}
return s + numlen;
case 'F':
s++;
return s;
case 'd':
- taint_not("-d");
+ forbid_setid("-d");
+ s++;
+ if (*s == ':' || *s == '=') {
+ sprintf(buf, "use Devel::%s;", ++s);
+ s += strlen(s);
+ my_setenv("PERL5DB",buf);
+ }
if (!perldb) {
perldb = TRUE;
init_debugger();
}
- s++;
return s;
case 'D':
#ifdef DEBUGGING
- taint_not("-D");
+ forbid_setid("-D");
if (isALPHA(s[1])) {
static char debopts[] = "psltocPmfrxuLHXD";
char *d;
#endif
/*SUPPRESS 530*/
return s;
+ case 'h':
+ usage(origargv[0]);
+ exit(0);
case 'i':
if (inplace)
Safefree(inplace);
*s = '\0';
break;
case 'I':
- taint_not("-I");
+ forbid_setid("-I");
if (*++s) {
- av_push(GvAVn(incgv),newSVpv(s,0));
+ char *e;
+ for (e = s; *e && !isSPACE(*e); e++) ;
+ av_push(GvAVn(incgv),newSVpv(s,e-s));
+ if (*e)
+ return e;
}
else
croak("No space allowed after -I");
s += numlen;
}
else {
- ors = savepvn(nrs,nrslen);
- orslen = nrslen;
+ if (RsPARA(nrs)) {
+ ors = "\n\n";
+ orslen = 2;
+ }
+ else
+ ors = SvPV(nrs, orslen);
+ ors = savepvn(ors, orslen);
+ }
+ return s;
+ case 'M':
+ forbid_setid("-M"); /* XXX ? */
+ /* FALL THROUGH */
+ case 'm':
+ forbid_setid("-m"); /* XXX ? */
+ if (*++s) {
+ char *start;
+ char *use = "use ";
+ /* -M-foo == 'no foo' */
+ if (*s == '-') { use = "no "; ++s; }
+ Sv = newSVpv(use,0);
+ start = s;
+ /* We allow -M'Module qw(Foo Bar)' */
+ while(isALNUM(*s) || *s==':') ++s;
+ if (*s != '=') {
+ sv_catpv(Sv, start);
+ if (*(start-1) == 'm') {
+ if (*s != '\0')
+ croak("Can't use '%c' after -mname", *s);
+ sv_catpv( Sv, " ()");
+ }
+ } else {
+ sv_catpvn(Sv, start, s-start);
+ sv_catpv(Sv, " split(/,/,q{");
+ sv_catpv(Sv, ++s);
+ sv_catpv(Sv, "})");
+ }
+ s += strlen(s);
+ if (preambleav == NULL)
+ preambleav = newAV();
+ av_push(preambleav, Sv);
}
+ else
+ croak("No space allowed after -%c", *(s-1));
return s;
case 'n':
minus_n = TRUE;
s++;
return s;
case 's':
- taint_not("-s");
+ forbid_setid("-s");
doswitches = TRUE;
s++;
return s;
s++;
return s;
case 'v':
- printf("\nThis is perl, version %s\n\n",patchlevel);
- fputs("\nCopyright 1987-1994, Larry Wall\n",stdout);
+#if defined(SUBVERSION) && SUBVERSION > 0
+ printf("\nThis is perl, version 5.%03d_%02d", PATCHLEVEL, SUBVERSION);
+#else
+ printf("\nThis is perl, version %s",patchlevel);
+#endif
+
+ printf("\n\nCopyright 1987-1997, Larry Wall\n");
+ printf("\n\t+ suidperl security patch");
#ifdef MSDOS
- fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n",
- stdout);
-#ifdef OS2
- fputs("OS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n",
- stdout);
+ printf("\n\nMS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n");
#endif
+#ifdef DJGPP
+ printf("djgpp v2 port (jpl5003c) by Hirofumi Watanabe, 1996\n");
+#endif
+#ifdef OS2
+ printf("\n\nOS/2 port Copyright (c) 1990, 1991, Raymond Chen, Kai Uwe Rommel\n"
+ "Version 5 port Copyright (c) 1994-1996, Andreas Kaiser, Ilya Zakharevich\n");
#endif
#ifdef atarist
- fputs("atariST series port, ++jrb bammi@cadence.com\n", stdout);
+ printf("atariST series port, ++jrb bammi@cadence.com\n");
#endif
- fputs("\n\
+ printf("\n\
Perl may be copied only under the terms of either the Artistic License or the\n\
-GNU General Public License, which may be found in the Perl 5.0 source kit.\n",stdout);
-#ifdef MSDOS
- usage(origargv[0]);
-#endif
+GNU General Public License, which may be found in the Perl 5.0 source kit.\n\n");
exit(0);
case 'w':
dowarn = TRUE;
status = unexec(buf, tokenbuf, &etext, sbrk(0), 0);
if (status)
- fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf);
+ PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n", tokenbuf, buf);
exit(status);
#else
+# ifdef VMS
+# include <lib$routines.h>
+ lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */
+#else
ABORT(); /* for use with undump */
#endif
+#endif
}
static void
init_main_stash()
{
GV *gv;
+
+ /* Note that strtab is a rather special HV. Assumptions are made
+ about not iterating on it, and not adding tie magic to it.
+ It is properly deallocated in perl_destruct() */
+ strtab = newHV();
+ HvSHAREKEYS_off(strtab); /* mandatory */
+ Newz(506,((XPVHV*)SvANY(strtab))->xhv_array,
+ sizeof(HE*) * (((XPVHV*)SvANY(strtab))->xhv_max + 1), char);
+
curstash = defstash = newHV();
curstname = newSVpv("main",4);
gv = gv_fetchpv("main::",TRUE, SVt_PVHV);
SvREADONLY_on(gv);
HvNAME(defstash) = savepv("main");
incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV)));
- SvMULTI_on(incgv);
+ GvMULTI_on(incgv);
defgv = gv_fetchpv("_",TRUE, SVt_PVAV);
+ errgv = gv_HVadd(gv_fetchpv("@", TRUE, SVt_PV));
+ GvMULTI_on(errgv);
+ sv_setpvn(GvSV(errgv), "", 0);
curstash = defstash;
compiling.cop_stash = defstash;
debstash = GvHV(gv_fetchpv("DB::", GV_ADDMULTI, SVt_PVHV));
+ /* We must init $/ before switches are processed. */
+ sv_setpvn(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), "\n", 1);
}
#ifdef CAN_PROTOTYPE
char *xfailed = Nullch;
register char *s;
I32 len;
+ int retval;
+#if defined(DOSISH) && !defined(OS2) && !defined(atarist)
+#define SEARCH_EXTS ".bat", ".cmd", NULL
+#endif
+#ifdef VMS
+# define SEARCH_EXTS ".pl", ".com", NULL
+#endif
+ /* additional extensions to try in each dir if scriptname not found */
+#ifdef SEARCH_EXTS
+ char *ext[] = { SEARCH_EXTS };
+ int extidx = (strchr(scriptname,'.')) ? -1 : 0; /* has ext already */
+#endif
+#ifdef VMS
+ if (dosearch) {
+ int hasdir, idx = 0, deftypes = 1;
+
+ hasdir = (strpbrk(scriptname,":[</") != Nullch) ;
+ /* The first time through, just add SEARCH_EXTS to whatever we
+ * already have, so we can check for default file types. */
+ while (deftypes || (!hasdir && my_trnlnm("DCL$PATH",tokenbuf,idx++)) ) {
+ if (deftypes) { deftypes = 0; *tokenbuf = '\0'; }
+ strcat(tokenbuf,scriptname);
+#else /* !VMS */
if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) {
bufend = s + strlen(s);
#endif
(void)strcat(tokenbuf+len,"/");
(void)strcat(tokenbuf+len,scriptname);
- DEBUG_p(fprintf(stderr,"Looking for %s\n",tokenbuf));
- if (Stat(tokenbuf,&statbuf) < 0) /* not there? */
+#endif /* !VMS */
+
+#ifdef SEARCH_EXTS
+ len = strlen(tokenbuf);
+ if (extidx > 0) /* reset after previous loop */
+ extidx = 0;
+ do {
+#endif
+ DEBUG_p(PerlIO_printf(Perl_debug_log, "Looking for %s\n",tokenbuf));
+ retval = Stat(tokenbuf,&statbuf);
+#ifdef SEARCH_EXTS
+ } while ( retval < 0 /* not there */
+ && extidx>=0 && ext[extidx] /* try an extension? */
+ && strcpy(tokenbuf+len, ext[extidx++])
+ );
+#endif
+ if (retval < 0)
continue;
if (S_ISREG(statbuf.st_mode)
&& cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) {
scriptname = xfound;
}
- origfilename = savepv(e_fp ? "-e" : scriptname);
+ if (strnEQ(scriptname, "/dev/fd/", 8) && isDIGIT(scriptname[8]) ) {
+ char *s = scriptname + 8;
+ fdscript = atoi(s);
+ while (isDIGIT(*s))
+ s++;
+ if (*s)
+ scriptname = s + 1;
+ }
+ else
+ fdscript = -1;
+ origfilename = savepv(e_tmpname ? "-e" : scriptname);
curcop->cop_filegv = gv_fetchfile(origfilename);
if (strEQ(origfilename,"-"))
scriptname = "";
- if (preprocess) {
+ if (fdscript >= 0) {
+ rsfp = PerlIO_fdopen(fdscript,"r");
+#if defined(HAS_FCNTL) && defined(F_SETFD)
+ if (rsfp)
+ fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
+#endif
+ }
+ else if (preprocess) {
char *cpp = CPPSTDIN;
if (strEQ(cpp,"cppstdin"))
else
sprintf(tokenbuf, "%s", cpp);
sv_catpv(sv,"-I");
- sv_catpv(sv,PRIVLIB);
+ sv_catpv(sv,PRIVLIB_EXP);
#ifdef MSDOS
(void)sprintf(buf, "\
sed %s -e \"/^[^#]/b\" \
rsfp = my_popen(buf,"r");
}
else if (!*scriptname) {
- taint_not("program input from stdin");
- rsfp = stdin;
+ forbid_setid("program input from stdin");
+ rsfp = PerlIO_stdin();
}
- else
- rsfp = fopen(scriptname,"r");
- if ((FILE*)rsfp == Nullfp) {
+ else {
+ rsfp = PerlIO_open(scriptname,"r");
+#if defined(HAS_FCNTL) && defined(F_SETFD)
+ if (rsfp)
+ fcntl(PerlIO_fileno(rsfp),F_SETFD,1); /* ensure close-on-exec */
+#endif
+ }
+ if (e_tmpname) {
+ e_fp = rsfp;
+ }
+ if (!rsfp) {
#ifdef DOSUID
#ifndef IAMSUID /* in case script is not readable before setuid */
if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 &&
}
static void
-validate_suid(validarg)
+validate_suid(validarg, scriptname)
char *validarg;
+char *scriptname;
{
+ int which;
+
/* do we need to emulate setuid on scripts? */
/* This code is for those BSD systems that have setuid #! scripts disabled
*/
#ifdef DOSUID
- char *s;
+ char *s, *s2;
- if (Fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
+ if (Fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */
croak("Can't stat script \"%s\"",origfilename);
- if (statbuf.st_mode & (S_ISUID|S_ISGID)) {
+ if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) {
I32 len;
#ifdef IAMSUID
croak("Permission denied"); /* testing full pathname here */
if (tmpstatbuf.st_dev != statbuf.st_dev ||
tmpstatbuf.st_ino != statbuf.st_ino) {
- (void)fclose(rsfp);
+ (void)PerlIO_close(rsfp);
if (rsfp = my_popen("/bin/mail root","w")) { /* heh, heh */
- fprintf(rsfp,
+ PerlIO_printf(rsfp,
"User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\
(Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n",
uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino,
croak("Setuid/gid script is writable by world");
doswitches = FALSE; /* -s is insecure in suid */
curcop->cop_line++;
- if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch ||
- strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */
+ if (sv_gets(linestr, rsfp, 0) == Nullch ||
+ strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */
croak("No #! line");
- s = tokenbuf+2;
+ s = SvPV(linestr,na)+2;
if (*s == ' ') s++;
while (!isSPACE(*s)) s++;
- if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
+ for (s2 = s; (s2 > SvPV(linestr,na)+2 &&
+ (isDIGIT(s2[-1]) || strchr("._-", s2[-1]))); s2--) ;
+ if (strnNE(s2-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */
croak("Not a perl script");
while (*s == ' ' || *s == '\t') s++;
/*
#endif /* IAMSUID */
if (euid) { /* oops, we're not the setuid root perl */
- (void)fclose(rsfp);
+ (void)PerlIO_close(rsfp);
#ifndef IAMSUID
(void)sprintf(buf, "%s/sperl%s", BIN, patchlevel);
execv(buf, origargv); /* try again */
if (geteuid() != uid)
croak("Can't do seteuid!\n");
}
- uid = (int)getuid();
- euid = (int)geteuid();
- gid = (int)getgid();
- egid = (int)getegid();
- tainting |= (euid != uid || egid != gid);
+ init_ids();
if (!cando(S_IXUSR,TRUE,&statbuf))
croak("Permission denied\n"); /* they can't do this */
}
#ifdef IAMSUID
else if (preprocess)
croak("-P not allowed for setuid/setgid script\n");
+ else if (fdscript >= 0)
+ croak("fd script not allowed in suidperl\n");
else
croak("Script is not setuid/setgid in suidperl\n");
+
+ /* We absolutely must clear out any saved ids here, so we */
+ /* exec the real perl, substituting fd script for scriptname. */
+ /* (We pass script name as "subdir" of fd, which perl will grok.) */
+ PerlIO_rewind(rsfp);
+ lseek(PerlIO_fileno(rsfp),(Off_t)0,0); /* just in case rewind didn't */
+ for (which = 1; origargv[which] && origargv[which] != scriptname; which++) ;
+ if (!origargv[which])
+ croak("Permission denied");
+ (void)sprintf(buf, "/dev/fd/%d/%.127s", PerlIO_fileno(rsfp), origargv[which]);
+ origargv[which] = buf;
+
+#if defined(HAS_FCNTL) && defined(F_SETFD)
+ fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */
+#endif
+
+ (void)sprintf(tokenbuf, "%s/perl%s", BIN, patchlevel);
+ execv(tokenbuf, origargv); /* try again */
+ croak("Can't do setuid\n");
#endif /* IAMSUID */
#else /* !DOSUID */
if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */
#ifndef SETUID_SCRIPTS_ARE_SECURE_NOW
- Fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
+ Fstat(PerlIO_fileno(rsfp),&statbuf); /* may be either wrapped or real suid */
if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID)
||
(egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID)
static void
find_beginning()
{
- register char *s;
+ register char *s, *s2;
/* skip forward in input to the real script? */
- taint_not("-x");
+ forbid_setid("-x");
while (doextract) {
if ((s = sv_gets(linestr, rsfp, 0)) == Nullch)
croak("No Perl script found in input\n");
- if (*s == '#' && s[1] == '!' && instr(s,"perl")) {
- ungetc('\n',rsfp); /* to keep line count right */
+ if (*s == '#' && s[1] == '!' && (s = instr(s,"perl"))) {
+ PerlIO_ungetc(rsfp, '\n'); /* to keep line count right */
doextract = FALSE;
- if (s = instr(s,"perl -")) {
- s += 6;
- /*SUPPRESS 530*/
- while (s = moreswitches(s)) ;
+ while (*s && !(isSPACE (*s) || *s == '#')) s++;
+ s2 = s;
+ while (*s == ' ' || *s == '\t') s++;
+ if (*s++ == '-') {
+ while (isDIGIT(s2[-1]) || strchr("-._", s2[-1])) s2--;
+ if (strnEQ(s2-4,"perl",4))
+ /*SUPPRESS 530*/
+ while (s = moreswitches(s)) ;
}
if (cddir && chdir(cddir) < 0)
croak("Can't chdir to %s",cddir);
}
static void
-init_debugger()
+init_ids()
{
- GV* tmpgv;
+ uid = (int)getuid();
+ euid = (int)geteuid();
+ gid = (int)getgid();
+ egid = (int)getegid();
+#ifdef VMS
+ uid |= gid << 16;
+ euid |= egid << 16;
+#endif
+ tainting |= (uid && (euid != uid || egid != gid));
+}
+
+static void
+forbid_setid(s)
+char *s;
+{
+ if (euid != uid)
+ croak("No %s allowed while running setuid", s);
+ if (egid != gid)
+ croak("No %s allowed while running setgid", s);
+}
+static void
+init_debugger()
+{
curstash = debstash;
- dbargs = GvAV(gv_AVadd((tmpgv = gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
+ dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV))));
AvREAL_off(dbargs);
DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV);
DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV);
- DBsub = gv_HVadd(tmpgv = gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
- DBsingle = GvSV((tmpgv = gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
- DBtrace = GvSV((tmpgv = gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
- DBsignal = GvSV((tmpgv = gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
+ DBsub = gv_HVadd(gv_fetchpv("sub", GV_ADDMULTI, SVt_PVHV));
+ DBsingle = GvSV((gv_fetchpv("single", GV_ADDMULTI, SVt_PV)));
+ sv_setiv(DBsingle, 0);
+ DBtrace = GvSV((gv_fetchpv("trace", GV_ADDMULTI, SVt_PV)));
+ sv_setiv(DBtrace, 0);
+ DBsignal = GvSV((gv_fetchpv("signal", GV_ADDMULTI, SVt_PV)));
+ sv_setiv(DBsignal, 0);
curstash = defstash;
}
static void
init_stacks()
{
- stack = newAV();
- mainstack = stack; /* remember in case we switch stacks */
- AvREAL_off(stack); /* not a real array */
- av_extend(stack,127);
+ curstack = newAV();
+ mainstack = curstack; /* remember in case we switch stacks */
+ AvREAL_off(curstack); /* not a real array */
+ av_extend(curstack,127);
- stack_base = AvARRAY(stack);
+ stack_base = AvARRAY(curstack);
stack_sp = stack_base;
stack_max = stack_base + 127;
- New(54,markstack,64,I32);
- markstack_ptr = markstack;
- markstack_max = markstack + 64;
-
- New(54,scopestack,32,I32);
- scopestack_ix = 0;
- scopestack_max = 32;
-
- New(54,savestack,128,ANY);
- savestack_ix = 0;
- savestack_max = 128;
-
- New(54,retstack,16,OP*);
- retstack_ix = 0;
- retstack_max = 16;
-
- New(50,cxstack,128,CONTEXT);
+ cxstack_max = 8192 / sizeof(CONTEXT) - 2; /* Use most of 8K. */
+ New(50,cxstack,cxstack_max + 1,CONTEXT);
cxstack_ix = -1;
- cxstack_max = 128;
New(50,tmps_stack,128,SV*);
tmps_ix = -1;
New(51,debname,128,char);
New(52,debdelim,128,char);
} )
+
+ /*
+ * The following stacks almost certainly should be per-interpreter,
+ * but for now they're not. XXX
+ */
+
+ if (markstack) {
+ markstack_ptr = markstack;
+ } else {
+ New(54,markstack,64,I32);
+ markstack_ptr = markstack;
+ markstack_max = markstack + 64;
+ }
+
+ if (scopestack) {
+ scopestack_ix = 0;
+ } else {
+ New(54,scopestack,32,I32);
+ scopestack_ix = 0;
+ scopestack_max = 32;
+ }
+
+ if (savestack) {
+ savestack_ix = 0;
+ } else {
+ New(54,savestack,128,ANY);
+ savestack_ix = 0;
+ savestack_max = 128;
+ }
+
+ if (retstack) {
+ retstack_ix = 0;
+ } else {
+ New(54,retstack,16,OP*);
+ retstack_ix = 0;
+ retstack_max = 16;
+ }
+}
+
+static void
+nuke_stacks()
+{
+ Safefree(cxstack);
+ Safefree(tmps_stack);
+ DEBUG( {
+ Safefree(debname);
+ Safefree(debdelim);
+ } )
}
-static FILE *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
+static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */
+
static void
init_lexer()
{
tmpfp = rsfp;
-
lex_start(linestr);
rsfp = tmpfp;
subname = newSVpv("main",4);
sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1);
stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO);
- SvMULTI_on(stdingv);
- IoIFP(GvIOp(stdingv)) = stdin;
+ GvMULTI_on(stdingv);
+ IoIFP(GvIOp(stdingv)) = PerlIO_stdin();
tmpgv = gv_fetchpv("stdin",TRUE, SVt_PV);
+ GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(stdingv));
- SvMULTI_on(tmpgv);
tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO);
- SvMULTI_on(tmpgv);
- IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = stdout;
- defoutgv = tmpgv;
+ GvMULTI_on(tmpgv);
+ IoOFP(GvIOp(tmpgv)) = IoIFP(GvIOp(tmpgv)) = PerlIO_stdout();
+ setdefout(tmpgv);
tmpgv = gv_fetchpv("stdout",TRUE, SVt_PV);
+ GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(defoutgv));
- SvMULTI_on(tmpgv);
othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO);
- SvMULTI_on(othergv);
- IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = stderr;
+ GvMULTI_on(othergv);
+ IoOFP(GvIOp(othergv)) = IoIFP(GvIOp(othergv)) = PerlIO_stderr();
tmpgv = gv_fetchpv("stderr",TRUE, SVt_PV);
+ GvMULTI_on(tmpgv);
GvIOp(tmpgv) = (IO*)SvREFCNT_inc(GvIOp(othergv));
- SvMULTI_on(tmpgv);
statname = NEWSV(66,0); /* last filename we did stat on */
+
+ if (!osname)
+ osname = savepv(OSNAME);
}
static void
toptarget = NEWSV(0,0);
sv_upgrade(toptarget, SVt_PVFM);
sv_setpvn(toptarget, "", 0);
- tmpgv = gv_fetchpv("\001",TRUE, SVt_PV);
- bodytarget = GvSV(tmpgv);
+ bodytarget = NEWSV(0,0);
sv_upgrade(bodytarget, SVt_PVFM);
sv_setpvn(bodytarget, "", 0);
formtarget = bodytarget;
- tainted = 1;
+ TAINT;
if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) {
sv_setpv(GvSV(tmpgv),origfilename);
magicname("0", "0", 1);
if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV))
sv_setpv(GvSV(tmpgv),origargv[0]);
if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) {
- SvMULTI_on(argvgv);
+ GvMULTI_on(argvgv);
(void)gv_AVadd(argvgv);
av_clear(GvAVn(argvgv));
for (; argc > 0; argc--,argv++) {
}
if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) {
HV *hv;
- SvMULTI_on(envgv);
+ GvMULTI_on(envgv);
hv = GvHVn(envgv);
hv_clear(hv);
#ifndef VMS /* VMS doesn't have environ array */
+ /* Note that if the supplied env parameter is actually a copy
+ of the global environ then it may now point to free'd memory
+ if the environment has been modified since. To avoid this
+ problem we treat env==NULL as meaning 'use the default'
+ */
+ if (!env)
+ env = environ;
if (env != environ) {
environ[0] = Nullch;
hv_magic(hv, envgv, 'E');
}
-#endif
-#ifdef DYNAMIC_ENV_FETCH
- HvNAME(hv) = savepv(ENV_HV_NAME);
-#endif
for (; *env; env++) {
if (!(s = strchr(*env,'=')))
continue;
(void)hv_store(hv, *env, s - *env, sv, 0);
*s = '=';
}
+#endif
+#ifdef DYNAMIC_ENV_FETCH
+ HvNAME(hv) = savepv(ENV_HV_NAME);
+#endif
hv_magic(hv, envgv, 'E');
}
- tainted = 0;
+ TAINT_NOT;
if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV))
sv_setiv(GvSV(tmpgv),(I32)getpid());
-
}
static void
{
char *s;
if (!tainting) {
+#ifndef VMS
s = getenv("PERL5LIB");
if (s)
incpush(s);
else
incpush(getenv("PERLLIB"));
+#else /* VMS */
+ /* Treat PERL5?LIB as a possible search list logical name -- the
+ * "natural" VMS idiom for a Unix path string. We allow each
+ * element to be a set of |-separated directories for compatibility.
+ */
+ char buf[256];
+ int idx = 0;
+ if (my_trnlnm("PERL5LIB",buf,0))
+ do { incpush(buf); } while (my_trnlnm("PERL5LIB",buf,++idx));
+ else
+ while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf);
+#endif /* VMS */
}
-#ifdef ARCHLIB
- incpush(ARCHLIB);
+/* Use the ~-expanded versions of APPLIB (undocumented),
+ ARCHLIB PRIVLIB SITEARCH SITELIB and OLDARCHLIB
+*/
+#ifdef APPLLIB_EXP
+ incpush(APPLLIB_EXP);
+#endif
+
+#ifdef ARCHLIB_EXP
+ incpush(ARCHLIB_EXP);
+#endif
+#ifndef PRIVLIB_EXP
+#define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl"
+#endif
+ incpush(PRIVLIB_EXP);
+
+#ifdef SITEARCH_EXP
+ incpush(SITEARCH_EXP);
+#endif
+#ifdef SITELIB_EXP
+ incpush(SITELIB_EXP);
#endif
-#ifndef PRIVLIB
-#define PRIVLIB "/usr/local/lib/perl5:/usr/local/lib/perl"
+#ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */
+ incpush(OLDARCHLIB_EXP);
#endif
- incpush(PRIVLIB);
- av_push(GvAVn(incgv),newSVpv(".",1));
+ if (!tainting)
+ incpush(".");
}
void
calllist(list)
AV* list;
{
- jmp_buf oldtop;
- char *mess;
+ Sigjmp_buf oldtop;
STRLEN len;
line_t oldline = curcop->cop_line;
- Copy(top_env, oldtop, 1, jmp_buf);
+ Copy(top_env, oldtop, 1, Sigjmp_buf);
while (AvFILL(list) >= 0) {
CV *cv = (CV*)av_shift(list);
SAVEFREESV(cv);
- switch (setjmp(top_env)) {
- case 0:
- PUSHMARK(stack_sp);
- perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
- mess = SvPVx(GvSV(gv_fetchpv("@",TRUE, SVt_PV)), len);
- if (len) {
- Copy(oldtop, top_env, 1, jmp_buf);
- curcop = &compiling;
- curcop->cop_line = oldline;
- if (list == beginav)
- croak("%sBEGIN failed--compilation aborted", mess);
- else
- croak("%sEND failed--cleanup aborted", mess);
+ switch (Sigsetjmp(top_env,1)) {
+ case 0: {
+ SV* atsv = GvSV(errgv);
+ PUSHMARK(stack_sp);
+ perl_call_sv((SV*)cv, G_EVAL|G_DISCARD);
+ (void)SvPV(atsv, len);
+ if (len) {
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
+ curcop = &compiling;
+ curcop->cop_line = oldline;
+ if (list == beginav)
+ sv_catpv(atsv, "BEGIN failed--compilation aborted");
+ else
+ sv_catpv(atsv, "END failed--cleanup aborted");
+ croak("%s", SvPVX(atsv));
+ }
}
break;
case 1:
+#ifdef VMS
statusvalue = 255; /* XXX I don't think we use 1 anymore. */
+#else
+ statusvalue = 1;
+#endif
/* FALL THROUGH */
case 2:
/* my_exit() was called */
if (endav)
calllist(endav);
FREETMPS;
- Copy(oldtop, top_env, 1, jmp_buf);
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
curcop = &compiling;
curcop->cop_line = oldline;
if (statusvalue) {
return;
case 3:
if (!restartop) {
- fprintf(stderr, "panic: restartop\n");
+ PerlIO_printf(PerlIO_stderr(), "panic: restartop\n");
FREETMPS;
break;
}
- Copy(oldtop, top_env, 1, jmp_buf);
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
curcop = &compiling;
curcop->cop_line = oldline;
- longjmp(top_env, 3);
+ Siglongjmp(top_env, 3);
}
}
- Copy(oldtop, top_env, 1, jmp_buf);
+ Copy(oldtop, top_env, 1, Sigjmp_buf);
}
projects / p5sagit/p5-mst-13.2.git / blobdiff