X-Git-Url: https://perl5.git.perl.org/perl5.git/blobdiff_plain/79072805bf63abe5b5978b5928ab00d360ea3e7f..d9f997d712a9ca9f2b66409f2920290ddaf904c3:/perl.c diff --git a/perl.c b/perl.c index 752121c..5a8f0d4 100644 --- a/perl.c +++ b/perl.c @@ -1,64 +1,31 @@ -char rcsid[] = "$RCSfile: perl.c,v $$Revision: 5.0 $$Date: 92/08/07 18:25:50 $\nPatch level: ###\n"; -/* - * Copyright (c) 1991, Larry Wall +/* perl.c + * + * Copyright (c) 1987-1997 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: perl.c,v $ - * Revision 4.1 92/08/07 18:25:50 lwall - * - * Revision 4.0.1.7 92/06/08 14:50:39 lwall - * patch20: PERLLIB now supports multiple directories - * patch20: running taintperl explicitly now does checks even if $< == $> - * patch20: -e 'cmd' no longer fails silently if /tmp runs out of space - * patch20: perl -P now uses location of sed determined by Configure - * patch20: form feed for formats is now specifiable via $^L - * patch20: paragraph mode now skips extra newlines automatically - * patch20: oldeval "1 #comment" didn't work - * patch20: couldn't require . files - * patch20: semantic compilation errors didn't abort execution - * - * Revision 4.0.1.6 91/11/11 16:38:45 lwall - * patch19: default arg for shift was wrong after first subroutine definition - * patch19: op/regexp.t failed from missing arg to bcmp() - * - * Revision 4.0.1.5 91/11/05 18:03:32 lwall - * patch11: random cleanup - * patch11: $0 was being truncated at times - * patch11: cppstdin now installed outside of source directory - * patch11: -P didn't allow use of #elif or #undef - * patch11: prepared for ctype implementations that don't define isascii() - * patch11: added oldeval {} - * patch11: oldeval confused by string containing null - * - * Revision 4.0.1.4 91/06/10 01:23:07 lwall - * patch10: perl -v printed incorrect copyright notice - * - * Revision 4.0.1.3 91/06/07 11:40:18 lwall - * patch4: changed old $^P to $^X - * - * Revision 4.0.1.2 91/06/07 11:26:16 lwall - * patch4: new copyright notice - * patch4: added $^P variable to control calling of perldb routines - * patch4: added $^F variable to specify maximum system fd, default 2 - * patch4: debugger lost track of lines in oldeval - * - * Revision 4.0.1.1 91/04/11 17:49:05 lwall - * patch1: fixed undefined environ problem - * - * Revision 4.0 91/03/20 01:37:44 lwall - * 4.0 baseline. - * */ -/*SUPPRESS 560*/ +/* + * "A ship then new they built for him/of mithril and of elven glass" --Bilbo + */ #include "EXTERN.h" #include "perl.h" -#include "perly.h" #include "patchlevel.h" +/* XXX If this causes problems, set i_unistd=undef in the hint file. */ +#ifdef I_UNISTD +#include +#endif + +#if !defined(STANDARD_C) && !defined(HAS_GETENV_PROTOTYPE) +char *getenv _((char *)); /* Usually in */ +#endif + +dEXTCONST char rcsid[] = "perl.c\nPatch level: ###\n"; + #ifdef IAMSUID #ifndef DOSUID #define DOSUID @@ -71,53 +38,139 @@ char rcsid[] = "$RCSfile: perl.c,v $$Revision: 5.0 $$Date: 92/08/07 18:25:50 $\n #endif #endif -static void incpush(); -static void validate_suid(); -static void find_beginning(); -static void init_main_stash(); -static void open_script(); -static void init_debugger(); -static void init_stack(); -static void init_lexer(); -static void init_context_stack(); -static void init_predump_symbols(); -static void init_postdump_symbols(); -static void init_perllib(); +#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; \ + mess_sv = Nullsv; \ + } STMT_END + +static void find_beginning _((void)); +static void forbid_setid _((char *)); +static void incpush _((char *, int)); +static void init_ids _((void)); +static void init_debugger _((void)); +static void init_lexer _((void)); +static void init_main_stash _((void)); +static void init_perllib _((void)); +static void init_postdump_symbols _((int, char **, char **)); +static void init_predump_symbols _((void)); +static void my_exit_jump _((void)) __attribute__((noreturn)); +static void nuke_stacks _((void)); +static void open_script _((char *, bool, SV *)); +#ifdef USE_THREADS +static void thread_destruct _((void *)); +#endif /* USE_THREADS */ +static void usage _((char *)); +static void validate_suid _((char *, char*)); + +static int fdscript = -1; + +#if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__) +#include +static void +catch_sigsegv(int signo, struct sigcontext_struct sc) +{ + signal(SIGSEGV, SIG_DFL); + fprintf(stderr, "Segmentation fault dereferencing 0x%lx\n" + "return_address = 0x%lx, eip = 0x%lx\n", + sc.cr2, __builtin_return_address(0), sc.eip); + fprintf(stderr, "thread = 0x%lx\n", (unsigned long)THR); +} +#endif -Interpreter * +PerlInterpreter * perl_alloc() { - Interpreter *sv_interp; - Interpreter junk; + PerlInterpreter *sv_interp; - curinterp = &junk; - Zero(&junk, 1, Interpreter); - New(53, sv_interp, 1, Interpreter); + curinterp = 0; + New(53, sv_interp, 1, PerlInterpreter); return sv_interp; } void perl_construct( sv_interp ) -register Interpreter *sv_interp; +register PerlInterpreter *sv_interp; { +#if defined(USE_THREADS) && !defined(FAKE_THREADS) + struct thread *thr; +#endif + if (!(curinterp = sv_interp)) return; - Zero(sv_interp, 1, Interpreter); +#ifdef MULTIPLICITY + Zero(sv_interp, 1, PerlInterpreter); +#endif + +#ifdef USE_THREADS +#ifdef NEED_PTHREAD_INIT + pthread_init(); +#endif /* NEED_PTHREAD_INIT */ + New(53, thr, 1, struct thread); +#ifdef FAKE_THREADS + self = thr; + thr->next = thr->prev = thr->next_run = thr->prev_run = thr; + thr->wait_queue = 0; + thr->private = 0; +#else + self = pthread_self(); + if (pthread_key_create(&thr_key, thread_destruct)) + croak("panic: pthread_key_create"); + if (pthread_setspecific(thr_key, (void *) thr)) + croak("panic: pthread_setspecific"); +#endif /* !FAKE_THREADS */ + nthreads = 1; + cvcache = newHV(); + thrflags = 0; + curcop = &compiling; +#endif /* USE_THREADS */ /* Init the real globals? */ if (!linestr) { linestr = NEWSV(65,80); + sv_upgrade(linestr,SVt_PVIV); + + if (!SvREADONLY(&sv_undef)) { + SvREADONLY_on(&sv_undef); + + sv_setpv(&sv_no,No); + SvNV(&sv_no); + SvREADONLY_on(&sv_no); + + sv_setpv(&sv_yes,Yes); + SvNV(&sv_yes); + SvREADONLY_on(&sv_yes); + } - SvREADONLY_on(&sv_undef); + nrs = newSVpv("\n", 1); + rs = SvREFCNT_inc(nrs); - sv_setpv(&sv_no,No); - SvNVn(&sv_no); - SvREADONLY_on(&sv_no); + MUTEX_INIT(&malloc_mutex); + MUTEX_INIT(&sv_mutex); + MUTEX_INIT(&eval_mutex); + MUTEX_INIT(&nthreads_mutex); + COND_INIT(&nthreads_cond); - sv_setpv(&sv_yes,Yes); - SvNVn(&sv_yes); - SvREADONLY_on(&sv_yes); + pidstatus = newHV(); #ifdef MSDOS /* @@ -130,69 +183,371 @@ register Interpreter *sv_interp; #endif } -#ifdef EMBEDDED - chopset = " \n-"; - cmdline = NOLINE; - curcop = &compiling; - cxstack_ix = -1; - cxstack_max = 128; - 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 = Nullstr; - tmps_floor = -1; - tmps_ix = -1; - tmps_max = -1; +#ifdef MULTIPLICITY + 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(); - sprintf(patchlevel,"%3.3s%2.2d", index(rcsid,'4'), PATCHLEVEL); + init_ids(); - (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); - - fdpid = newAV(); /* for remembering popen pids by fd */ - pidstatus = newHV(COEFFSIZE);/* for remembering status of dead pids */ + start_env.je_prev = NULL; + start_env.je_ret = -1; + start_env.je_mustcatch = TRUE; + top_env = &start_env; + STATUS_ALL_SUCCESS; -#ifdef TAINT -#ifndef DOSUID - if (uid == euid && gid == egid) - taintanyway = TRUE; /* running taintperl explicitly */ + 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 + PerlIO_init(); /* Hook to IO system */ + + fdpid = newAV(); /* for remembering popen pids by fd */ + + init_stacks(ARGS); + DEBUG( { + New(51,debname,128,char); + New(52,debdelim,128,char); + } ) + + ENTER; } +#ifdef USE_THREADS +void +thread_destruct(arg) +void *arg; +{ + struct thread *thr = (struct thread *) arg; + /* + * Decrement the global thread count and signal anyone listening. + * The only official thread listening is the original thread while + * in perl_destruct. It waits until it's the only thread and then + * performs END blocks and other process clean-ups. + */ + DEBUG_L(PerlIO_printf(PerlIO_stderr(), "thread_destruct: 0x%lx\n", (unsigned long) thr)); + + Safefree(thr); + MUTEX_LOCK(&nthreads_mutex); + nthreads--; + COND_BROADCAST(&nthreads_cond); + MUTEX_UNLOCK(&nthreads_mutex); +} +#endif /* USE_THREADS */ + void perl_destruct(sv_interp) -register Interpreter *sv_interp; +register PerlInterpreter *sv_interp; { + dTHR; + int destruct_level; /* 0=none, 1=full, 2=full with checks */ + I32 last_sv_count; + HV *hv; + if (!(curinterp = sv_interp)) return; -#ifdef EMBEDDED - if (main_root) - op_free(main_root); - main_root = 0; - if (last_root) - op_free(last_root); - last_root = 0; + +#ifdef USE_THREADS +#ifndef FAKE_THREADS + /* Wait until all user-created threads go away */ + MUTEX_LOCK(&nthreads_mutex); + while (nthreads > 1) + { + DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: waiting for %d threads\n", + nthreads - 1)); + COND_WAIT(&nthreads_cond, &nthreads_mutex); + } + /* At this point, we're the last thread */ + MUTEX_UNLOCK(&nthreads_mutex); + DEBUG_L(PerlIO_printf(PerlIO_stderr(), "perl_destruct: armageddon has arrived\n")); + MUTEX_DESTROY(&nthreads_mutex); + COND_DESTROY(&nthreads_cond); +#endif /* !defined(FAKE_THREADS) */ +#endif /* USE_THREADS */ + + 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 + + LEAVE; + FREETMPS; + + /* We must account for everything. */ + + /* Destroy the main CV and syntax tree */ + if (main_root) { + curpad = AvARRAY(comppad); + op_free(main_root); + main_root = Nullop; + } + main_start = Nullop; + SvREFCNT_dec(main_cv); + main_cv = Nullcv; + + if (sv_objcount) { + /* + * Try to destruct global references. We do this first so that the + * destructors and destructees still exist. Some sv's might remain. + * Non-referenced objects are on their own. + */ + + dirty = TRUE; + sv_clean_objs(); + } + + /* 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; + + if (destruct_level == 0){ + + DEBUG_P(debprofdump()); + + /* 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); + SvREFCNT_dec(initav); + beginav = Nullav; + endav = Nullav; + initav = 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); + + FREETMPS; + if (destruct_level >= 2) { + if (scopestack_ix != 0) + warn("Unbalanced scopes: %ld more ENTERs than LEAVEs\n", + (long)scopestack_ix); + if (savestack_ix != 0) + warn("Unbalanced saves: %ld more saves than restores\n", + (long)savestack_ix); + if (tmps_floor != -1) + warn("Unbalanced tmps: %ld more allocs than frees\n", + (long)tmps_floor + 1); + if (cxstack_ix != -1) + warn("Unbalanced context: %ld more PUSHes than POPs\n", + (long)cxstack_ix + 1); + } + + /* 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: %ld\n", (long)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()); +#ifdef USE_THREADS + MUTEX_DESTROY(&sv_mutex); + MUTEX_DESTROY(&malloc_mutex); + MUTEX_DESTROY(&eval_mutex); +#endif /* USE_THREADS */ + + /* As the absolutely last thing, free the non-arena SV for mess() */ + + if (mess_sv) { + /* we know that type >= SVt_PV */ + SvOOK_off(mess_sv); + Safefree(SvPVX(mess_sv)); + Safefree(SvANY(mess_sv)); + Safefree(mess_sv); + mess_sv = Nullsv; + } } void perl_free(sv_interp) -Interpreter *sv_interp; +PerlInterpreter *sv_interp; { if (!(curinterp = sv_interp)) return; @@ -200,23 +555,28 @@ Interpreter *sv_interp; } int -perl_parse(sv_interp, argc, argv, env) -Interpreter *sv_interp; -register int argc; -register char **argv; +perl_parse(sv_interp, xsinit, argc, argv, env) +PerlInterpreter *sv_interp; +void (*xsinit)_((void)); +int argc; +char **argv; char **env; { + dTHR; register SV *sv; register char *s; - char *scriptname; - char *getenv(); - bool dosearch = FALSE; + char *scriptname = NULL; + VOL bool dosearch = FALSE; char *validarg = ""; + I32 oldscope; + AV* comppadlist; + dJMPENV; + int ret; #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW #ifdef IAMSUID #undef IAMSUID - fatal("suidperl is no longer needed since the kernel can now execute\n\ + croak("suidperl is no longer needed since the kernel can now execute\n\ setuid perl scripts securely.\n"); #endif #endif @@ -224,36 +584,67 @@ setuid perl scripts securely.\n"); if (!(curinterp = sv_interp)) return 255; - if (main_root) - op_free(main_root); - main_root = 0; - if (last_root) - op_free(last_root); - last_root = 0; +#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) { + + /* Come here if running an undumped a.out. */ - switch (setjmp(top_env)) { + origfilename = savepv(argv[0]); + do_undump = FALSE; + cxstack_ix = -1; /* start label stack again */ + init_ids(); + init_postdump_symbols(argc,argv,env); + return 0; + } + + if (main_root) { + curpad = AvARRAY(comppad); + op_free(main_root); + main_root = Nullop; + } + main_start = Nullop; + SvREFCNT_dec(main_cv); + main_cv = Nullcv; + + time(&basetime); + oldscope = scopestack_ix; + + JMPENV_PUSH(ret); + switch (ret) { case 1: - statusvalue = 255; + STATUS_ALL_FAILURE; + /* FALL THROUGH */ case 2: - return(statusvalue); /* my_exit() was called */ + /* my_exit() was called */ + while (scopestack_ix > oldscope) + LEAVE; + curstash = defstash; + if (endav) + call_list(oldscope, endav); + JMPENV_POP; + return STATUS_NATIVE_EXPORT; case 3: - fprintf(stderr, "panic: top_env\n"); - exit(1); + JMPENV_POP; + PerlIO_printf(PerlIO_stderr(), "panic: top_env\n"); + return 1; } - if (do_undump) { - origfilename = savestr(argv[0]); - do_undump = FALSE; - cxstack_ix = -1; /* start label stack again */ - goto just_doit; - } sv_setpvn(linestr,"",0); sv = newSVpv("",0); /* first used for -I flags */ + SAVEFREESV(sv); init_main_stash(); + for (argc--,argv++; argc > 0; argc--,argv++) { if (argv[0][0] != '-' || !argv[0][1]) break; @@ -267,12 +658,16 @@ setuid perl scripts securely.\n"); reswitch: switch (*s) { case '0': + case 'F': case 'a': case 'c': case 'd': case 'D': + case 'h': case 'i': case 'l': + case 'M': + case 'm': case 'n': case 'p': case 's': @@ -284,65 +679,120 @@ setuid perl scripts securely.\n"); goto reswitch; break; + case 'T': + tainting = TRUE; + s++; + goto reswitch; + case 'e': -#ifdef TAINT if (euid != uid || egid != gid) - fatal("No -e allowed in setuid scripts"); -#endif + croak("No -e allowed in setuid scripts"); if (!e_fp) { - e_tmpname = savestr(TMPPATH); + e_tmpname = savepv(TMPPATH); (void)mktemp(e_tmpname); if (!*e_tmpname) - fatal("Can't mktemp()"); - e_fp = fopen(e_tmpname,"w"); + croak("Can't mktemp()"); + e_fp = PerlIO_open(e_tmpname,"w"); if (!e_fp) - fatal("Cannot open temporary file"); + 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': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif + forbid_setid("-I"); sv_catpv(sv,"-"); sv_catpv(sv,s); sv_catpv(sv," "); if (*++s) { - (void)av_push(GvAVn(incgv),newSVpv(s,0)); + incpush(s, TRUE); } else if (argv[1]) { - (void)av_push(GvAVn(incgv),newSVpv(argv[1],0)); + incpush(argv[1], TRUE); sv_catpv(sv,argv[1]); argc--,argv++; sv_catpv(sv," "); } break; case 'P': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -P allowed in setuid scripts"); -#endif + forbid_setid("-P"); preprocess = TRUE; s++; goto reswitch; case 'S': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -S allowed in setuid scripts"); -#endif + 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(NO_EMBED) || defined(MULTIPLICITY) + sv_catpv(Sv,"\" Compile-time options:"); +# ifdef DEBUGGING + sv_catpv(Sv," DEBUGGING"); +# endif +# ifdef NO_EMBED + sv_catpv(Sv," NO_EMBED"); +# endif +# ifdef MULTIPLICITY + sv_catpv(Sv," MULTIPLICITY"); +# endif + sv_catpv(Sv,"\\n\","); +#endif +#if defined(LOCAL_PATCH_COUNT) + if (LOCAL_PATCH_COUNT > 0) { + int i; + sv_catpv(Sv,"\" Locally applied patches:\\n\","); + for (i = 1; i <= LOCAL_PATCH_COUNT; i++) { + if (localpatches[i]) + sv_catpvf(Sv,"\" \\t%s\\n\",",localpatches[i]); + } + } +#endif + sv_catpvf(Sv,"\" Built under %s\\n\"",OSNAME); +#ifdef __DATE__ +# ifdef __TIME__ + sv_catpvf(Sv,",\" Compiled at %s %s\\n\"",__DATE__,__TIME__); +# else + sv_catpvf(Sv,",\" Compiled on %s\\n\"",__DATE__); +# endif +#endif + sv_catpv(Sv, "; \ +$\"=\"\\n \"; \ +@env = map { \"$_=\\\"$ENV{$_}\\\"\" } sort grep {/^PERL/} keys %ENV; \ +print \" \\%ENV:\\n @env\\n\" if @env; \ +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++; if (*s) - cddir = savestr(s); + cddir = savepv(s); break; case '-': argc--,argv++; @@ -350,21 +800,45 @@ setuid perl scripts securely.\n"); case 0: break; default: - fatal("Unrecognized switch: -%s",s); + croak("Unrecognized switch: -%s",s); } } switch_end: - scriptname = argv[0]; + + if (!tainting && (s = getenv("PERL5OPT"))) { + for (;;) { + while (isSPACE(*s)) + s++; + if (*s == '-') { + s++; + if (isSPACE(*s)) + continue; + } + if (!*s) + break; + if (!strchr("DIMUdmw", *s)) + croak("Illegal switch in PERL5OPT: -%c", *s); + s = moreswitches(s); + } + } + + if (!scriptname) + scriptname = argv[0]; if (e_fp) { - if (fflush(e_fp) || ferror(e_fp) || fclose(e_fp)) - fatal("Can't write to temp file for -e: %s", strerror(errno)); + if (PerlIO_flush(e_fp) || PerlIO_error(e_fp) || PerlIO_close(e_fp)) { +#ifndef MULTIPLICITY + warn("Did you forget to compile with -DMULTIPLICITY?"); +#endif + 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 = "-"; } @@ -373,24 +847,51 @@ setuid perl scripts securely.\n"); open_script(scriptname,dosearch,sv); - sv_free(sv); /* free -I directories */ - sv = Nullsv; - - validate_suid(validarg); + validate_suid(validarg, scriptname); if (doextract) find_beginning(); - if (perldb) - init_debugger(); + main_cv = compcv = (CV*)NEWSV(1104,0); + sv_upgrade((SV *)compcv, SVt_PVCV); + CvUNIQUE_on(compcv); - pad = newAV(); - comppad = pad; + comppad = newAV(); av_push(comppad, Nullsv); curpad = AvARRAY(comppad); + comppad_name = newAV(); + comppad_name_fill = 0; + min_intro_pending = 0; padix = 0; +#ifdef USE_THREADS + av_store(comppad_name, 0, newSVpv("@_", 2)); + curpad[0] = (SV*)newAV(); + SvPADMY_on(curpad[0]); /* XXX Needed? */ + CvOWNER(compcv) = 0; + New(666, CvMUTEXP(compcv), 1, perl_mutex); + MUTEX_INIT(CvMUTEXP(compcv)); +#endif /* USE_THREADS */ + + 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 + +#if defined(DEBUGGING) && defined(USE_THREADS) && defined(__linux__) + DEBUG_L(signal(SIGSEGV, (void(*)(int))catch_sigsegv);); +#endif - init_stack(); + init_predump_symbols(); + if (!do_undump) + init_postdump_symbols(argc,argv,env); init_lexer(); @@ -399,73 +900,112 @@ setuid perl scripts securely.\n"); error_count = 0; if (yyparse() || error_count) { if (minus_c) - fatal("%s had compilation errors.\n", origfilename); + croak("%s had compilation errors.\n", origfilename); else { - fatal("Execution of %s aborted due to compilation errors.\n", + croak("Execution of %s aborted due to compilation errors.\n", origfilename); } } 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; } - init_context_stack(); - - init_predump_symbols(); + /* now that script is parsed, we can modify record separator */ + SvREFCNT_dec(rs); + rs = SvREFCNT_inc(nrs); + sv_setsv(GvSV(gv_fetchpv("/", TRUE, SVt_PV)), rs); if (do_undump) my_unexec(); - just_doit: /* come here if running an undumped a.out */ - init_postdump_symbols(argc,argv,env); + if (dowarn) + gv_check(defstash); + + LEAVE; + FREETMPS; + +#ifdef DEBUGGING_MSTATS + if ((s=getenv("PERL_DEBUG_MSTATS")) && atoi(s) >= 2) + dump_mstats("after compilation:"); +#endif + + ENTER; + restartop = 0; + JMPENV_POP; return 0; } int perl_run(sv_interp) -Interpreter *sv_interp; +PerlInterpreter *sv_interp; { + dTHR; + I32 oldscope; + dJMPENV; + int ret; + if (!(curinterp = sv_interp)) return 255; - switch (setjmp(top_env)) { + + oldscope = scopestack_ix; + + JMPENV_PUSH(ret); + switch (ret) { case 1: cxstack_ix = -1; /* start context stack again */ break; case 2: + /* my_exit() was called */ + while (scopestack_ix > oldscope) + LEAVE; curstash = defstash; - { - GV *gv = gv_fetchpv("END", FALSE); - - if (gv && GvCV(gv)) { - if (!setjmp(top_env)) - perl_callback("END", 0, G_SCALAR, 0, 0); - } - return(statusvalue); /* my_exit() was called */ - } + if (endav) + call_list(oldscope, endav); + FREETMPS; +#ifdef DEBUGGING_MSTATS + if (getenv("PERL_DEBUG_MSTATS")) + dump_mstats("after execution: "); +#endif + JMPENV_POP; + return STATUS_NATIVE_EXPORT; case 3: if (!restartop) { - fprintf(stderr, "panic: restartop\n"); - exit(1); + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; + JMPENV_POP; + 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")); +#ifdef USE_THREADS + DEBUG_L(PerlIO_printf(Perl_debug_log, "main thread is 0x%lx\n", + (unsigned long) thr)); +#endif /* USE_THREADS */ 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) + sv_setiv(DBsingle, 1); + if (initav) + call_list(oldscope, initav); } /* do it */ @@ -473,86 +1013,382 @@ Interpreter *sv_interp; if (restartop) { op = restartop; restartop = 0; - run(); + runops(); } else if (main_start) { + CvDEPTH(main_cv) = 1; op = main_start; - run(); + runops(); } - else - fatal("panic: perl_run"); my_exit(0); + /* NOTREACHED */ + return 0; } -void -my_exit(status) -int status; +SV* +perl_get_sv(name, create) +char* name; +I32 create; { - statusvalue = (unsigned short)(status & 0xffff); - longjmp(top_env, 2); + GV* gv = gv_fetchpv(name, create, SVt_PV); + if (gv) + return GvSV(gv); + return Nullsv; +} + +AV* +perl_get_av(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PVAV); + if (create) + return GvAVn(gv); + if (gv) + return GvAV(gv); + return Nullav; +} + +HV* +perl_get_hv(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PVHV); + if (create) + return GvHVn(gv); + if (gv) + return GvHV(gv); + return Nullhv; +} + +CV* +perl_get_cv(name, create) +char* name; +I32 create; +{ + GV* gv = gv_fetchpv(name, create, SVt_PVCV); + if (create && !GvCVu(gv)) + return newSUB(start_subparse(FALSE, 0), + newSVOP(OP_CONST, 0, newSVpv(name,0)), + Nullop, + Nullop); + if (gv) + return GvCVu(gv); + return Nullcv; } /* Be sure to refetch the stack pointer after calling these routines. */ -int -perl_callback(subname, sp, gimme, hasargs, numargs) +I32 +perl_call_argv(subname, flags, argv) char *subname; -I32 sp; /* stack pointer after args are pushed */ -I32 gimme; /* called in array or scalar context */ -I32 hasargs; /* whether to create a @_ array for routine */ -I32 numargs; /* how many args are pushed on the stack */ +I32 flags; /* See G_* flags in cop.h */ +register char **argv; /* null terminated arg list */ { - BINOP myop; /* fake syntax tree node */ - - ENTER; - SAVESPTR(op); - stack_base = AvARRAY(stack); - stack_sp = stack_base + sp - numargs; - op = (OP*)&myop; - pp_pushmark(); /* doesn't look at op, actually, except to return */ - *stack_sp = (SV*)gv_fetchpv(subname, FALSE); - stack_sp += numargs; + dTHR; + dSP; + + PUSHMARK(sp); + if (argv) { + while (*argv) { + XPUSHs(sv_2mortal(newSVpv(*argv,0))); + argv++; + } + PUTBACK; + } + return perl_call_pv(subname, flags); +} + +I32 +perl_call_pv(subname, flags) +char *subname; /* name of the subroutine */ +I32 flags; /* See G_* flags in cop.h */ +{ + return perl_call_sv((SV*)perl_get_cv(subname, TRUE), flags); +} - myop.op_last = hasargs ? (OP*)&myop : Nullop; +I32 +perl_call_method(methname, flags) +char *methname; /* name of the subroutine */ +I32 flags; /* See G_* flags in cop.h */ +{ + dTHR; + dSP; + OP myop; + if (!op) + op = &myop; + XPUSHs(sv_2mortal(newSVpv(methname,0))); + PUTBACK; + pp_method(ARGS); + return perl_call_sv(*stack_sp--, flags); +} + +/* May be called with any of a CV, a GV, or an SV containing the name. */ +I32 +perl_call_sv(sv, flags) +SV* sv; +I32 flags; /* See G_* flags in cop.h */ +{ + dTHR; + LOGOP myop; /* fake syntax tree node */ + SV** sp = stack_sp; + I32 oldmark; + I32 retval; + I32 oldscope; + static CV *DBcv; + bool oldcatch = CATCH_GET; + dJMPENV; + int ret; + + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } + + Zero(&myop, 1, LOGOP); myop.op_next = Nullop; + if (!(flags & G_NOARGS)) + myop.op_flags |= OPf_STACKED; + myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : + (flags & G_ARRAY) ? OPf_WANT_LIST : + OPf_WANT_SCALAR); + SAVEOP(); + op = (OP*)&myop; - op = pp_entersubr(); - run(); - LEAVE; - return stack_sp - stack_base; + EXTEND(stack_sp, 1); + *++stack_sp = sv; + oldmark = TOPMARK; + oldscope = scopestack_ix; + + 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) { + cLOGOP->op_other = op; + markstack_ptr--; + /* we're trying to emulate pp_entertry() here */ + { + register CONTEXT *cx; + I32 gimme = GIMME_V; + + 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++; + + JMPENV_PUSH(ret); + switch (ret) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + FREETMPS; + JMPENV_POP; + if (statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (restartop) { + op = restartop; + restartop = 0; + break; + } + stack_sp = stack_base + oldmark; + if (flags & G_ARRAY) + retval = 0; + else { + retval = 1; + *++stack_sp = &sv_undef; + } + goto cleanup; + } + } + else + CATCH_SET(TRUE); + + if (op == (OP*)&myop) + op = pp_entersub(ARGS); + if (op) + runops(); + retval = stack_sp - (stack_base + oldmark); + if ((flags & G_EVAL) && !(flags & G_KEEPERR)) + sv_setpv(GvSV(errgv),""); + + cleanup: + if (flags & G_EVAL) { + if (scopestack_ix > oldscope) { + SV **newsp; + PMOP *newpm; + I32 gimme; + register CONTEXT *cx; + I32 optype; + + POPBLOCK(cx,newpm); + POPEVAL(cx); + pop_return(); + curpm = newpm; + LEAVE; + } + JMPENV_POP; + } + else + CATCH_SET(oldcatch); + + if (flags & G_DISCARD) { + stack_sp = stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; + } + return retval; } -int -perl_callv(subname, sp, gimme, argv) -char *subname; -register I32 sp; /* current stack pointer */ -I32 gimme; /* called in array or scalar context */ -register char **argv; /* null terminated arg list, NULL for no arglist */ +/* Eval a string. The G_EVAL flag is always assumed. */ + +I32 +perl_eval_sv(sv, flags) +SV* sv; +I32 flags; /* See G_* flags in cop.h */ { - register I32 items = 0; - I32 hasargs = (argv != 0); + dTHR; + UNOP myop; /* fake syntax tree node */ + SV** sp = stack_sp; + I32 oldmark = sp - stack_base; + I32 retval; + I32 oldscope; + dJMPENV; + int ret; + + if (flags & G_DISCARD) { + ENTER; + SAVETMPS; + } - av_store(stack, ++sp, Nullsv); /* reserve spot for 1st return arg */ - if (hasargs) { - while (*argv) { - av_store(stack, ++sp, sv_2mortal(newSVpv(*argv,0))); - items++; - argv++; + SAVEOP(); + op = (OP*)&myop; + Zero(op, 1, UNOP); + EXTEND(stack_sp, 1); + *++stack_sp = sv; + oldscope = scopestack_ix; + + if (!(flags & G_NOARGS)) + myop.op_flags = OPf_STACKED; + myop.op_next = Nullop; + myop.op_type = OP_ENTEREVAL; + myop.op_flags |= ((flags & G_VOID) ? OPf_WANT_VOID : + (flags & G_ARRAY) ? OPf_WANT_LIST : + OPf_WANT_SCALAR); + if (flags & G_KEEPERR) + myop.op_flags |= OPf_SPECIAL; + + JMPENV_PUSH(ret); + switch (ret) { + case 0: + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + curstash = defstash; + FREETMPS; + JMPENV_POP; + if (statusvalue) + croak("Callback called exit"); + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (restartop) { + op = restartop; + restartop = 0; + break; } + 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(ARGS); + if (op) + runops(); + retval = stack_sp - (stack_base + oldmark); + if (!(flags & G_KEEPERR)) + sv_setpv(GvSV(errgv),""); + + cleanup: + JMPENV_POP; + if (flags & G_DISCARD) { + stack_sp = stack_base + oldmark; + retval = 0; + FREETMPS; + LEAVE; } - return perl_callback(subname, sp, gimme, hasargs, items); + return retval; } -void -magicalize(list) -register char *list; +SV* +perl_eval_pv(p, croak_on_error) +char* p; +I32 croak_on_error; { - char sym[2]; + dTHR; + dSP; + SV* sv = newSVpv(p, 0); + + PUSHMARK(sp); + perl_eval_sv(sv, G_SCALAR); + SvREFCNT_dec(sv); + + SPAGAIN; + sv = POPs; + PUTBACK; + + if (croak_on_error && SvTRUE(GvSV(errgv))) + croak(SvPVx(GvSV(errgv), na)); - sym[1] = '\0'; - while (*sym = *list++) - magicname(sym, sym, 1); + return sv; +} + +/* 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 @@ -563,41 +1399,40 @@ I32 namlen; { register GV *gv; - if (gv = gv_fetchpv(sym,allgvs)) - sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); -} - -#ifdef DOSISH -#define PERLLIB_SEP ';' -#else -#define PERLLIB_SEP ':' -#endif - -static void -incpush(p) -char *p; -{ - char *s; - - if (!p) - return; - - /* Break at all separators */ - while (*p) { - /* First, skip any consecutive separators */ - while ( *p == PERLLIB_SEP ) { - /* Uncomment the next line for PATH semantics */ - /* (void)av_push(GvAVn(incgv), newSVpv(".", 1)); */ - p++; - } - if ( (s = index(p, PERLLIB_SEP)) != Nullch ) { - (void)av_push(GvAVn(incgv), newSVpv(p, (I32)(s - p))); - p = s + 1; - } else { - (void)av_push(GvAVn(incgv), newSVpv(p, 0)); - break; - } - } + if (gv = gv_fetchpv(sym,TRUE, SVt_PV)) + sv_magic(GvSV(gv), (SV*)gv, 0, name, namlen); +} + +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 */ @@ -607,22 +1442,26 @@ moreswitches(s) char *s; { I32 numlen; + U32 rschar; switch (*s) { case '0': - nrschar = scan_oct(s, 4, &numlen); - nrs = nsavestr("\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': + minus_F = TRUE; + splitstr = savepv(s + 1); + s += strlen(s); + return s; case 'a': minus_a = TRUE; s++; @@ -632,69 +1471,119 @@ char *s; s++; return s; case 'd': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -d allowed in setuid scripts"); -#endif - perldb = TRUE; + forbid_setid("-d"); s++; + if (*s == ':' || *s == '=') { + my_setenv("PERL5DB", form("use Devel::%s;", ++s)); + s += strlen(s); + } + if (!perldb) { + perldb = TRUE; + init_debugger(); + } return s; case 'D': #ifdef DEBUGGING -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -D allowed in setuid scripts"); -#endif + forbid_setid("-D"); if (isALPHA(s[1])) { - static char debopts[] = "psltocPmfrxuLHX"; + static char debopts[] = "psltocPmfrxuLHXD"; char *d; - for (s++; *s && (d = index(debopts,*s)); s++) + for (s++; *s && (d = strchr(debopts,*s)); s++) debug |= 1 << (d - debopts); } else { debug = atoi(s+1); for (s++; isDIGIT(*s); s++) ; } - debug |= 32768; + debug |= 0x80000000; #else warn("Recompile perl with -DDEBUGGING to use -D switch\n"); - for (s++; isDIGIT(*s); s++) ; + for (s++; isALNUM(*s); s++) ; #endif /*SUPPRESS 530*/ return s; + case 'h': + usage(origargv[0]); + exit(0); case 'i': if (inplace) Safefree(inplace); - inplace = savestr(s+1); + inplace = savepv(s+1); /*SUPPRESS 530*/ for (s = inplace; *s && !isSPACE(*s); s++) ; *s = '\0'; break; case 'I': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -I allowed in setuid scripts"); -#endif + forbid_setid("-I"); if (*++s) { - (void)av_push(GvAVn(incgv),newSVpv(s,0)); + char *e, *p; + for (e = s; *e && !isSPACE(*e); e++) ; + p = savepvn(s, e-s); + incpush(p, TRUE); + Safefree(p); + if (*e) + return e; } else - fatal("No space allowed after -I"); + croak("No space allowed after -I"); break; case 'l': minus_l = TRUE; s++; + if (ors) + Safefree(ors); if (isDIGIT(*s)) { - ors = savestr("\n"); + ors = savepv("\n"); orslen = 1; *ors = scan_oct(s, 3 + (*s == '0'), &numlen); s += numlen; } else { - ors = nsavestr(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; + SV *sv; + 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; @@ -705,13 +1594,15 @@ char *s; s++; return s; case 's': -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("No -s allowed in setuid scripts"); -#endif + forbid_setid("-s"); doswitches = TRUE; s++; return s; + case 'T': + if (!tainting) + croak("Too late for \"-T\" option"); + s++; + return s; case 'u': do_undump = TRUE; s++; @@ -721,41 +1612,54 @@ char *s; s++; return s; case 'v': - fputs("\nThis is perl, version 5.0, Alpha 2 (unsupported)\n\n",stdout); - fputs(rcsid,stdout); - fputs("\nCopyright (c) 1989, 1990, 1991, 1992, 1993 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"); #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) 1994-1997, 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; s++; return s; + case '*': case ' ': if (s[1] == '-') /* Additional switches on #! line. */ return s+2; break; + case '-': case 0: case '\n': case '\t': break; +#ifdef ALTERNATE_SHEBANG + case 'S': /* OS/2 needs -S on "extproc" line. */ + break; +#endif + case 'P': + if (preprocess) + return s+1; + /* FALL THROUGH */ default: - fatal("Switch meaningless after -x: -%s",s); + croak("Can't emulate -%.1s on #! line",s); } return Nullch; } @@ -768,105 +1672,223 @@ void my_unexec() { #ifdef UNEXEC + SV* prog; + SV* file; int status; extern int etext; - sprintf (buf, "%s.perldump", origfilename); - sprintf (tokenbuf, "%s/perl", BIN); + prog = newSVpv(BIN_EXP); + sv_catpv(prog, "/perl"); + file = newSVpv(origfilename); + sv_catpv(file, ".perldump"); - status = unexec(buf, tokenbuf, &etext, sbrk(0), 0); + status = unexec(SvPVX(file), SvPVX(prog), &etext, sbrk(0), 0); if (status) - fprintf(stderr, "unexec of %s into %s failed!\n", tokenbuf, buf); - my_exit(status); + PerlIO_printf(PerlIO_stderr(), "unexec of %s into %s failed!\n", + SvPVX(prog), SvPVX(file)); + exit(status); #else +# ifdef VMS +# include + lib$signal(SS$_DEBUG); /* ssdef.h #included from vmsish.h */ +# else ABORT(); /* for use with undump */ +# endif #endif } static void init_main_stash() { - curstash = defstash = newHV(0); + dTHR; + 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); - GvHV(gv_fetchpv("_main",TRUE)) = defstash; - HvNAME(defstash) = "main"; - incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE))); - SvMULTI_on(incgv); - defgv = gv_fetchpv("_",TRUE); + gv = gv_fetchpv("main::",TRUE, SVt_PVHV); + SvREFCNT_dec(GvHV(gv)); + GvHV(gv) = (HV*)SvREFCNT_inc(defstash); + SvREADONLY_on(gv); + HvNAME(defstash) = savepv("main"); + incgv = gv_HVadd(gv_AVadd(gv_fetchpv("INC",TRUE, SVt_PVAV))); + 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 +static void +open_script(char *scriptname, bool dosearch, SV *sv) +#else static void open_script(scriptname,dosearch,sv) char *scriptname; bool dosearch; SV *sv; +#endif { + dTHR; char *xfound = Nullch; char *xfailed = Nullch; register char *s; I32 len; + int retval; +#if defined(DOSISH) && !defined(OS2) && !defined(atarist) +# define SEARCH_EXTS ".bat", ".cmd", NULL +# define MAX_EXT_LEN 4 +#endif +#ifdef VMS +# define SEARCH_EXTS ".pl", ".com", NULL +# define MAX_EXT_LEN 4 +#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 */ +#else +# define MAX_EXT_LEN 0 +#endif - if (dosearch && !index(scriptname, '/') && (s = getenv("PATH"))) { +#ifdef VMS + if (dosearch) { + int hasdir, idx = 0, deftypes = 1; + hasdir = (strpbrk(scriptname,":[= sizeof tokenbuf) + continue; /* don't search dir with too-long name */ + strcat(tokenbuf, scriptname); +#else /* !VMS */ + if (dosearch && !strchr(scriptname, '/') && (s = getenv("PATH"))) { bufend = s + strlen(s); - while (*s) { -#ifndef DOSISH - s = cpytill(tokenbuf,s,bufend,':',&len); -#else -#ifdef atarist - for (len = 0; *s && *s != ',' && *s != ';'; tokenbuf[len++] = *s++); - tokenbuf[len] = '\0'; + while (s < bufend) { +#ifndef atarist + s = delimcpy(tokenbuf, tokenbuf + sizeof tokenbuf, s, bufend, +#ifdef DOSISH + ';', #else - for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); - tokenbuf[len] = '\0'; + ':', #endif -#endif - if (*s) + &len); +#else /* atarist */ + for (len = 0; *s && *s != ',' && *s != ';'; len++, s++) { + if (len < sizeof tokenbuf) + tokenbuf[len] = *s; + } + if (len < sizeof tokenbuf) + tokenbuf[len] = '\0'; +#endif /* atarist */ + if (s < bufend) s++; -#ifndef DOSISH - if (len && tokenbuf[len-1] != '/') -#else -#ifdef atarist - if (len && ((tokenbuf[len-1] != '\\') && (tokenbuf[len-1] != '/'))) -#else - if (len && tokenbuf[len-1] != '\\') + if (len + 1 + strlen(scriptname) + MAX_EXT_LEN >= sizeof tokenbuf) + continue; /* don't search dir with too-long name */ + if (len +#if defined(atarist) && !defined(DOSISH) + && tokenbuf[len - 1] != '/' +#endif +#if defined(atarist) || defined(DOSISH) + && tokenbuf[len - 1] != '\\' #endif + ) + tokenbuf[len++] = '/'; + (void)strcpy(tokenbuf + len, scriptname); +#endif /* !VMS */ + +#ifdef SEARCH_EXTS + len = strlen(tokenbuf); + if (extidx > 0) /* reset after previous loop */ + extidx = 0; + do { #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? */ + 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)) { + && cando(S_IRUSR,TRUE,&statbuf) +#ifndef DOSISH + && cando(S_IXUSR,TRUE,&statbuf) +#endif + ) + { xfound = tokenbuf; /* bingo! */ break; } if (!xfailed) - xfailed = savestr(tokenbuf); + xfailed = savepv(tokenbuf); } if (!xfound) - fatal("Can't execute %s", xfailed ? xfailed : scriptname ); + croak("Can't execute %s", xfailed ? xfailed : scriptname ); if (xfailed) Safefree(xfailed); scriptname = xfound; } - origfilename = savestr(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) { - char *cpp = CPPSTDIN; + 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_cfg = CPPSTDIN; + SV *cpp = NEWSV(0,0); + SV *cmd = NEWSV(0,0); + + if (strEQ(cpp_cfg, "cppstdin")) + sv_catpvf(cpp, "%s/", BIN_EXP); + sv_catpv(cpp, cpp_cfg); - if (strEQ(cpp,"cppstdin")) - sprintf(tokenbuf, "%s/%s", SCRIPTDIR, cpp); - else - sprintf(tokenbuf, "%s", cpp); sv_catpv(sv,"-I"); - sv_catpv(sv,PRIVLIB); + sv_catpv(sv,PRIVLIB_EXP); + #ifdef MSDOS - (void)sprintf(buf, "\ + sv_setpvf(cmd, "\ sed %s -e \"/^[^#]/b\" \ -e \"/^#[ ]*include[ ]/b\" \ -e \"/^#[ ]*define[ ]/b\" \ @@ -878,10 +1900,10 @@ sed %s -e \"/^[^#]/b\" \ -e \"/^#[ ]*undef[ ]/b\" \ -e \"/^#[ ]*endif/b\" \ -e \"s/^#.*//\" \ - %s | %s -C %s %s", + %s | %_ -C %_ %s", (doextract ? "-e \"1,/^#/d\n\"" : ""), #else - (void)sprintf(buf, "\ + sv_setpvf(cmd, "\ %s %s -e '/^[^#]/b' \ -e '/^#[ ]*include[ ]/b' \ -e '/^#[ ]*define[ ]/b' \ @@ -893,7 +1915,7 @@ sed %s -e \"/^[^#]/b\" \ -e '/^#[ ]*undef[ ]/b' \ -e '/^#[ ]*endif/b' \ -e 's/^[ ]*#.*//' \ - %s | %s -C %s %s", + %s | %_ -C %_ %s", #ifdef LOC_SED LOC_SED, #else @@ -901,8 +1923,7 @@ sed %s -e \"/^[^#]/b\" \ #endif (doextract ? "-e '1,/^#/d\n'" : ""), #endif - scriptname, tokenbuf, SvPVn(sv), CPPMINUS); - DEBUG_P(fprintf(stderr, "%s\n", buf)); + scriptname, cpp, sv, CPPMINUS); doextract = FALSE; #ifdef IAMSUID /* actually, this is caught earlier */ if (euid != uid && !euid) { /* if running suidperl */ @@ -910,46 +1931,60 @@ sed %s -e \"/^[^#]/b\" \ (void)seteuid(uid); /* musn't stay setuid root */ #else #ifdef HAS_SETREUID - (void)setreuid(-1, uid); + (void)setreuid((Uid_t)-1, uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1, uid, (Uid_t)-1); #else setuid(uid); #endif #endif +#endif if (geteuid() != uid) - fatal("Can't do seteuid!\n"); + croak("Can't do seteuid!\n"); } #endif /* IAMSUID */ - rsfp = my_popen(buf,"r"); + rsfp = my_popen(SvPVX(cmd), "r"); + SvREFCNT_dec(cmd); + SvREFCNT_dec(cpp); } else if (!*scriptname) { -#ifdef TAINT - if (euid != uid || egid != gid) - fatal("Can't take set-id script from stdin"); + forbid_setid("program input from stdin"); + rsfp = PerlIO_stdin(); + } + 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 - rsfp = stdin; } - else - rsfp = fopen(scriptname,"r"); - if ((FILE*)rsfp == Nullfp) { + if (e_tmpname) { + e_fp = rsfp; + } + if (!rsfp) { #ifdef DOSUID #ifndef IAMSUID /* in case script is not readable before setuid */ - if (euid && stat(SvPV(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && + if (euid && Stat(SvPVX(GvSV(curcop->cop_filegv)),&statbuf) >= 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { - (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't do setuid\n"); + /* try again */ + execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv); + croak("Can't do setuid\n"); } #endif #endif - fatal("Can't open perl script \"%s\": %s\n", - SvPV(GvSV(curcop->cop_filegv)), strerror(errno)); + croak("Can't open perl script \"%s\": %s\n", + SvPVX(GvSV(curcop->cop_filegv)), Strerror(errno)); } } 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 @@ -968,19 +2003,14 @@ char *validarg; * DOSUID must be defined in both perl and suidperl, and IAMSUID must * be defined in suidperl only. suidperl must be setuid root. The * Configure script will set this up for you if you want it. - * - * There is also the possibility of have a script which is running - * set-id due to a C wrapper. We want to do the TAINT checks - * on these set-id scripts, but don't want to have the overhead of - * them in normal perl, and can't use suidperl because it will lose - * the effective uid info, so we have an additional non-setuid root - * version called taintperl or tperlN.NNN that just does the TAINT checks. */ #ifdef DOSUID - if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ - fatal("Can't stat script \"%s\"",origfilename); - if (statbuf.st_mode & (S_ISUID|S_ISGID)) { + char *s, *s2; + + if (Fstat(PerlIO_fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ + croak("Can't stat script \"%s\"",origfilename); + if (fdscript < 0 && statbuf.st_mode & (S_ISUID|S_ISGID)) { I32 len; #ifdef IAMSUID @@ -993,8 +2023,8 @@ char *validarg; * But I don't think it's too important. The manual lies when * it says access() is useful in setuid programs. */ - if (access(SvPV(GvSV(curcop->cop_filegv)),1)) /*double check*/ - fatal("Permission denied"); + if (access(SvPVX(GvSV(curcop->cop_filegv)),1)) /*double check*/ + croak("Permission denied"); #else /* If we can swap euid and uid, then we can determine access rights * with a simple stat of the file, and then compare device and @@ -1004,47 +2034,65 @@ char *validarg; { struct stat tmpstatbuf; - if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) - fatal("Can't swap uid and euid"); /* really paranoid */ - if (stat(SvPV(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) - fatal("Permission denied"); /* testing full pathname here */ + if ( +#ifdef HAS_SETREUID + setreuid(euid,uid) < 0 +#else +# if HAS_SETRESUID + setresuid(euid,uid,(Uid_t)-1) < 0 +# endif +#endif + || getuid() != euid || geteuid() != uid) + croak("Can't swap uid and euid"); /* really paranoid */ + if (Stat(SvPVX(GvSV(curcop->cop_filegv)),&tmpstatbuf) < 0) + 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, -"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, - statbuf.st_dev, statbuf.st_ino, - SvPV(GvSV(curcop->cop_filegv)), - statbuf.st_uid, statbuf.st_gid); + PerlIO_printf(rsfp, +"User %ld tried to run dev %ld ino %ld in place of dev %ld ino %ld!\n\ +(Filename of set-id script was %s, uid %ld gid %ld.)\n\nSincerely,\nperl\n", + (long)uid,(long)tmpstatbuf.st_dev, (long)tmpstatbuf.st_ino, + (long)statbuf.st_dev, (long)statbuf.st_ino, + SvPVX(GvSV(curcop->cop_filegv)), + (long)statbuf.st_uid, (long)statbuf.st_gid); (void)my_pclose(rsfp); } - fatal("Permission denied\n"); + croak("Permission denied\n"); } - if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) - fatal("Can't reswap uid and euid"); + if ( +#ifdef HAS_SETREUID + setreuid(uid,euid) < 0 +#else +# if defined(HAS_SETRESUID) + setresuid(uid,euid,(Uid_t)-1) < 0 +# endif +#endif + || getuid() != uid || geteuid() != euid) + croak("Can't reswap uid and euid"); if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ - fatal("Permission denied\n"); + croak("Permission denied\n"); } #endif /* HAS_SETREUID */ #endif /* IAMSUID */ if (!S_ISREG(statbuf.st_mode)) - fatal("Permission denied"); + croak("Permission denied"); if (statbuf.st_mode & S_IWOTH) - fatal("Setuid/gid script is writable by world"); + 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 */ - fatal("No #! line"); - s = tokenbuf+2; + if (sv_gets(linestr, rsfp, 0) == Nullch || + strnNE(SvPV(linestr,na),"#!",2) ) /* required even on Sys V */ + croak("No #! line"); + 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 */ - fatal("Not a perl script"); + 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++; /* * #! arg must be what we saw above. They can invoke it by @@ -1054,23 +2102,23 @@ char *validarg; len = strlen(validarg); if (strEQ(validarg," PHOOEY ") || strnNE(s,validarg,len) || !isSPACE(s[len])) - fatal("Args must match #! line"); + croak("Args must match #! line"); #ifndef IAMSUID if (euid != uid && (statbuf.st_mode & S_ISUID) && euid == statbuf.st_uid) if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ + croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); #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 */ + /* try again */ + execv(form("%s/sperl%s", BIN_EXP, patchlevel), origargv); #endif - fatal("Can't do setuid\n"); + croak("Can't do setuid\n"); } if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) { @@ -1078,13 +2126,17 @@ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); (void)setegid(statbuf.st_gid); #else #ifdef HAS_SETREGID - (void)setregid((GIDTYPE)-1,statbuf.st_gid); + (void)setregid((Gid_t)-1,statbuf.st_gid); +#else +#ifdef HAS_SETRESGID + (void)setresgid((Gid_t)-1,statbuf.st_gid,(Gid_t)-1); #else setgid(statbuf.st_gid); #endif #endif +#endif if (getegid() != statbuf.st_gid) - fatal("Can't do setegid!\n"); + croak("Can't do setegid!\n"); } if (statbuf.st_mode & S_ISUID) { if (statbuf.st_uid != euid) @@ -1092,256 +2144,270 @@ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); (void)seteuid(statbuf.st_uid); /* all that for this */ #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,statbuf.st_uid); + (void)setreuid((Uid_t)-1,statbuf.st_uid); +#else +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,statbuf.st_uid,(Uid_t)-1); #else setuid(statbuf.st_uid); #endif #endif +#endif if (geteuid() != statbuf.st_uid) - fatal("Can't do seteuid!\n"); + croak("Can't do seteuid!\n"); } else if (uid) { /* oops, mustn't run as root */ #ifdef HAS_SETEUID - (void)seteuid((UIDTYPE)uid); + (void)seteuid((Uid_t)uid); #else #ifdef HAS_SETREUID - (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); + (void)setreuid((Uid_t)-1,(Uid_t)uid); #else - setuid((UIDTYPE)uid); +#ifdef HAS_SETRESUID + (void)setresuid((Uid_t)-1,(Uid_t)uid,(Uid_t)-1); +#else + setuid((Uid_t)uid); +#endif #endif #endif if (geteuid() != uid) - fatal("Can't do seteuid!\n"); + croak("Can't do seteuid!\n"); } - uid = (int)getuid(); - euid = (int)geteuid(); - gid = (int)getgid(); - egid = (int)getegid(); + init_ids(); if (!cando(S_IXUSR,TRUE,&statbuf)) - fatal("Permission denied\n"); /* they can't do this */ + croak("Permission denied\n"); /* they can't do this */ } #ifdef IAMSUID else if (preprocess) - fatal("-P not allowed for setuid/setgid script\n"); + croak("-P not allowed for setuid/setgid script\n"); + else if (fdscript >= 0) + croak("fd script not allowed in suidperl\n"); else - fatal("Script is not setuid/setgid in suidperl\n"); -#else -#ifndef TAINT /* we aren't taintperl or suidperl */ - /* script has a wrapper--can't run suidperl or we lose euid */ - else if (euid != uid || egid != gid) { - (void)fclose(rsfp); - (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); - } -#endif /* TAINT */ + 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"); + origargv[which] = savepv(form("/dev/fd/%d/%s", + PerlIO_fileno(rsfp), origargv[which])); +#if defined(HAS_FCNTL) && defined(F_SETFD) + fcntl(PerlIO_fileno(rsfp),F_SETFD,0); /* ensure no close-on-exec */ +#endif + execv(form("%s/perl%s", BIN_EXP, patchlevel), origargv); /* try again */ + croak("Can't do setuid\n"); #endif /* IAMSUID */ #else /* !DOSUID */ -#ifndef TAINT /* we aren't taintperl or suidperl */ 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) ) if (!do_undump) - fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ + croak("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ /* not set-id, must be wrapped */ - (void)fclose(rsfp); - (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); - execv(buf, origargv); /* try again */ - fatal("Can't run setuid script with taint checks"); } -#endif /* TAINT */ #endif /* DOSUID */ } static void find_beginning() { -#if !defined(IAMSUID) && !defined(TAINT) - register char *s; + register char *s, *s2; /* skip forward in input to the real script? */ + forbid_setid("-x"); while (doextract) { if ((s = sv_gets(linestr, rsfp, 0)) == Nullch) - fatal("No Perl script found in input\n"); - if (*s == '#' && s[1] == '!' && instr(s,"perl")) { - ungetc('\n',rsfp); /* to keep line count right */ + croak("No Perl script found in input\n"); + 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) - fatal("Can't chdir to %s",cddir); + croak("Can't chdir to %s",cddir); } } -#endif /* !defined(IAMSUID) && !defined(TAINT) */ } 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)); +} - debstash = newHV(0); - GvHV(gv_fetchpv("_DB",TRUE)) = debstash; +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() +{ + dTHR; curstash = debstash; - dbargs = GvAV(gv_AVadd((tmpgv = gv_fetchpv("args",TRUE)))); - SvMULTI_on(tmpgv); + dbargs = GvAV(gv_AVadd((gv_fetchpv("args", GV_ADDMULTI, SVt_PVAV)))); AvREAL_off(dbargs); - DBgv = gv_fetchpv("DB",TRUE); - SvMULTI_on(DBgv); - DBline = gv_fetchpv("dbline",TRUE); - SvMULTI_on(DBline); - DBsub = gv_HVadd(tmpgv = gv_fetchpv("sub",TRUE)); - SvMULTI_on(tmpgv); - DBsingle = GvSV((tmpgv = gv_fetchpv("single",TRUE))); - SvMULTI_on(tmpgv); - DBtrace = GvSV((tmpgv = gv_fetchpv("trace",TRUE))); - SvMULTI_on(tmpgv); - DBsignal = GvSV((tmpgv = gv_fetchpv("signal",TRUE))); - SvMULTI_on(tmpgv); + DBgv = gv_fetchpv("DB", GV_ADDMULTI, SVt_PVGV); + DBline = gv_fetchpv("dbline", GV_ADDMULTI, SVt_PVAV); + 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_stack() +void +init_stacks(ARGS) +dARGS { - stack = newAV(); - mainstack = stack; /* remember in case we switch stacks */ - AvREAL_off(stack); /* not a real array */ - av_fill(stack,127); av_fill(stack,-1); /* preextend stack */ + 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 + 128; + stack_max = stack_base + 127; + + cxstack_max = 8192 / sizeof(CONTEXT) - 2; /* Use most of 8K. */ + New(50,cxstack,cxstack_max + 1,CONTEXT); + cxstack_ix = -1; - New(54,markstack,64,int); - markstack_ptr = markstack; - markstack_max = markstack + 64; + New(50,tmps_stack,128,SV*); + tmps_floor = -1; + tmps_ix = -1; + tmps_max = 128; + + /* + * 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; + } - New(54,scopestack,32,int); - scopestack_ix = 0; - scopestack_max = 32; + if (scopestack) { + scopestack_ix = 0; + } else { + New(54,scopestack,32,I32); + scopestack_ix = 0; + scopestack_max = 32; + } - New(54,savestack,128,ANY); - savestack_ix = 0; - savestack_max = 128; + if (savestack) { + savestack_ix = 0; + } else { + New(54,savestack,128,ANY); + savestack_ix = 0; + savestack_max = 128; + } - New(54,retstack,16,OP*); - retstack_ix = 0; - retstack_max = 16; + if (retstack) { + retstack_ix = 0; + } else { + New(54,retstack,16,OP*); + retstack_ix = 0; + retstack_max = 16; + } } static void -init_lexer() +nuke_stacks() { - bufend = bufptr = SvPVn(linestr); - subname = newSVpv("main",4); + dTHR; + Safefree(cxstack); + Safefree(tmps_stack); + DEBUG( { + Safefree(debname); + Safefree(debdelim); + } ) } +static PerlIO *tmpfp; /* moved outside init_lexer() because of UNICOS bug */ + static void -init_context_stack() +init_lexer() { - New(50,cxstack,128,CONTEXT); - DEBUG( { - New(51,debname,128,char); - New(52,debdelim,128,char); - } ) + tmpfp = rsfp; + lex_start(linestr); + rsfp = tmpfp; + subname = newSVpv("main",4); } static void init_predump_symbols() { - SV *sv; - GV* tmpgv; - - /* initialize everything that won't change if we undump */ - - if (siggv = gv_fetchpv("SIG",allgvs)) { - HV *hv; - SvMULTI_on(siggv); - hv = GvHVn(siggv); - hv_magic(hv, siggv, 'S'); - - /* initialize signal stack */ - signalstack = newAV(); - av_store(signalstack, 32, Nullsv); - av_clear(signalstack); - AvREAL_off(signalstack); - } - - magicalize("!#?^~=-%.+&*()<>,\\/[|`':\004\t\020\024\027\006"); - userinit(); /* in case linked C routines want magical variables */ - - ampergv = gv_fetchpv("&",allgvs); - leftgv = gv_fetchpv("`",allgvs); - rightgv = gv_fetchpv("'",allgvs); - sawampersand = (ampergv || leftgv || rightgv); - if (tmpgv = gv_fetchpv(":",allgvs)) - sv_setpv(GvSV(tmpgv),chopset); - - /* these aren't necessarily magical */ - if (tmpgv = gv_fetchpv("\014",allgvs)) { - sv_setpv(GvSV(tmpgv),"\f"); - formfeed = GvSV(tmpgv); - } - if (tmpgv = gv_fetchpv(";",allgvs)) - sv_setpv(GvSV(tmpgv),"\034"); - if (tmpgv = gv_fetchpv("]",allgvs)) { - sv = GvSV(tmpgv); - sv_upgrade(sv, SVt_PVNV); - sv_setpv(sv,rcsid); - SvNV(sv) = atof(patchlevel); - SvNOK_on(sv); - } - sv_setpvn(GvSV(gv_fetchpv("\"", TRUE)), " ", 1); - - stdingv = gv_fetchpv("STDIN",TRUE); - SvMULTI_on(stdingv); - if (!GvIO(stdingv)) - GvIO(stdingv) = newIO(); - GvIO(stdingv)->ifp = stdin; - tmpgv = gv_fetchpv("stdin",TRUE); - GvIO(tmpgv) = GvIO(stdingv); - SvMULTI_on(tmpgv); - - tmpgv = gv_fetchpv("STDOUT",TRUE); - SvMULTI_on(tmpgv); - if (!GvIO(tmpgv)) - GvIO(tmpgv) = newIO(); - GvIO(tmpgv)->ofp = GvIO(tmpgv)->ifp = stdout; - defoutgv = tmpgv; - tmpgv = gv_fetchpv("stdout",TRUE); - GvIO(tmpgv) = GvIO(defoutgv); - SvMULTI_on(tmpgv); - - curoutgv = gv_fetchpv("STDERR",TRUE); - SvMULTI_on(curoutgv); - if (!GvIO(curoutgv)) - GvIO(curoutgv) = newIO(); - GvIO(curoutgv)->ofp = GvIO(curoutgv)->ifp = stderr; - tmpgv = gv_fetchpv("stderr",TRUE); - GvIO(tmpgv) = GvIO(curoutgv); - SvMULTI_on(tmpgv); - curoutgv = defoutgv; /* switch back to STDOUT */ + dTHR; + GV *tmpgv; + GV *othergv; + + sv_setpvn(GvSV(gv_fetchpv("\"", TRUE, SVt_PV)), " ", 1); + + stdingv = gv_fetchpv("STDIN",TRUE, SVt_PVIO); + 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)); + + tmpgv = gv_fetchpv("STDOUT",TRUE, SVt_PVIO); + 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)); + + othergv = gv_fetchpv("STDERR",TRUE, SVt_PVIO); + 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)); statname = NEWSV(66,0); /* last filename we did stat on */ - /* 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)), rs, rslen); + if (!osname) + osname = savepv(OSNAME); } static void @@ -1363,12 +2429,12 @@ register char **env; argc--,argv++; break; } - if (s = index(argv[0], '=')) { + if (s = strchr(argv[0], '=')) { *s++ = '\0'; - sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE)),s); + sv_setpv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),s); } else - sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE)),1); + sv_setiv(GvSV(gv_fetchpv(argv[0]+1,TRUE, SVt_PV)),1); } } toptarget = NEWSV(0,0); @@ -1379,67 +2445,361 @@ register char **env; sv_setpvn(bodytarget, "", 0); formtarget = bodytarget; -#ifdef TAINT - tainted = 1; -#endif - if (tmpgv = gv_fetchpv("0",allgvs)) { + TAINT; + if (tmpgv = gv_fetchpv("0",TRUE, SVt_PV)) { sv_setpv(GvSV(tmpgv),origfilename); magicname("0", "0", 1); } - if (tmpgv = gv_fetchpv("\024",allgvs)) - time(&basetime); - if (tmpgv = gv_fetchpv("\030",allgvs)) + if (tmpgv = gv_fetchpv("\030",TRUE, SVt_PV)) sv_setpv(GvSV(tmpgv),origargv[0]); - if (argvgv = gv_fetchpv("ARGV",allgvs)) { - SvMULTI_on(argvgv); + if (argvgv = gv_fetchpv("ARGV",TRUE, SVt_PVAV)) { + GvMULTI_on(argvgv); (void)gv_AVadd(argvgv); av_clear(GvAVn(argvgv)); for (; argc > 0; argc--,argv++) { - (void)av_push(GvAVn(argvgv),newSVpv(argv[0],0)); + av_push(GvAVn(argvgv),newSVpv(argv[0],0)); } } -#ifdef TAINT - (void) gv_fetchpv("ENV",TRUE); /* must test PATH and IFS */ -#endif - if (envgv = gv_fetchpv("ENV",allgvs)) { + if (envgv = gv_fetchpv("ENV",TRUE, SVt_PVHV)) { HV *hv; - SvMULTI_on(envgv); + GvMULTI_on(envgv); hv = GvHVn(envgv); - hv_clear(hv, FALSE); hv_magic(hv, envgv, 'E'); +#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; for (; *env; env++) { - if (!(s = index(*env,'='))) + if (!(s = strchr(*env,'='))) continue; *s++ = '\0'; +#ifdef WIN32 + (void)strupr(*env); +#endif sv = newSVpv(s--,0); (void)hv_store(hv, *env, s - *env, sv, 0); *s = '='; } - } -#ifdef TAINT - tainted = 0; #endif - if (tmpgv = gv_fetchpv("$",allgvs)) - sv_setiv(GvSV(tmpgv),(I32)getpid()); - - if (dowarn) { - gv_check('A','Z'); - gv_check('a','z'); +#ifdef DYNAMIC_ENV_FETCH + HvNAME(hv) = savepv(ENV_HV_NAME); +#endif } + TAINT_NOT; + if (tmpgv = gv_fetchpv("$",TRUE, SVt_PV)) + sv_setiv(GvSV(tmpgv), (IV)getpid()); } static void init_perllib() { -#ifndef TAINT /* Can't allow arbitrary PERLLIB in setuid script */ - incpush(getenv("PERLLIB")); -#endif /* TAINT */ + char *s; + if (!tainting) { +#ifndef VMS + s = getenv("PERL5LIB"); + if (s) + incpush(s, TRUE); + else + incpush(getenv("PERLLIB"), FALSE); +#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,TRUE); } while (my_trnlnm("PERL5LIB",buf,++idx)); + else + while (my_trnlnm("PERLLIB",buf,idx++)) incpush(buf,FALSE); +#endif /* VMS */ + } + +/* Use the ~-expanded versions of APPLLIB (undocumented), + ARCHLIB PRIVLIB SITEARCH SITELIB and OLDARCHLIB +*/ +#ifdef APPLLIB_EXP + incpush(APPLLIB_EXP, FALSE); +#endif + +#ifdef ARCHLIB_EXP + incpush(ARCHLIB_EXP, FALSE); +#endif +#ifndef PRIVLIB_EXP +#define PRIVLIB_EXP "/usr/local/lib/perl5:/usr/local/lib/perl" +#endif + incpush(PRIVLIB_EXP, FALSE); + +#ifdef SITEARCH_EXP + incpush(SITEARCH_EXP, FALSE); +#endif +#ifdef SITELIB_EXP + incpush(SITELIB_EXP, FALSE); +#endif +#ifdef OLDARCHLIB_EXP /* 5.00[01] compatibility */ + incpush(OLDARCHLIB_EXP, FALSE); +#endif + + if (!tainting) + incpush(".", FALSE); +} + +#if defined(DOSISH) +# define PERLLIB_SEP ';' +#else +# 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, addsubdirs) +char *p; +int addsubdirs; +{ + SV *subdir = Nullsv; + static char *archpat_auto; + + if (!p) + return; + + if (addsubdirs) { + subdir = newSV(0); + if (!archpat_auto) { + STRLEN len = (sizeof(ARCHNAME) + strlen(patchlevel) + + sizeof("//auto")); + New(55, archpat_auto, len, char); + sprintf(archpat_auto, "/%s/%s/auto", ARCHNAME, patchlevel); +#ifdef VMS + for (len = sizeof(ARCHNAME) + 2; + archpat_auto[len] != '\0' && archpat_auto[len] != '/'; len++) + if (archpat_auto[len] == '.') archpat_auto[len] = '_'; +#endif + } + } + + /* Break at all separators */ + while (p && *p) { + SV *libdir = newSV(0); + char *s; + + /* skip any consecutive separators */ + while ( *p == PERLLIB_SEP ) { + /* Uncomment the next line for PATH semantics */ + /* av_push(GvAVn(incgv), newSVpv(".", 1)); */ + p++; + } + + if ( (s = strchr(p, PERLLIB_SEP)) != Nullch ) { + sv_setpvn(libdir, PERLLIB_MANGLE(p, (STRLEN)(s - p)), + (STRLEN)(s - p)); + p = s + 1; + } + else { + sv_setpv(libdir, PERLLIB_MANGLE(p, 0)); + p = Nullch; /* break out */ + } + + /* + * BEFORE pushing libdir onto @INC we may first push version- and + * archname-specific sub-directories. + */ + if (addsubdirs) { + struct stat tmpstatbuf; +#ifdef VMS + char *unix; + STRLEN len; + + if ((unix = tounixspec_ts(SvPV(libdir,na),Nullch)) != Nullch) { + len = strlen(unix); + while (unix[len-1] == '/') len--; /* Cosmetic */ + sv_usepvn(libdir,unix,len); + } + else + PerlIO_printf(PerlIO_stderr(), + "Failed to unixify @INC element \"%s\"\n", + SvPV(libdir,na)); +#endif + /* .../archname/version if -d .../archname/version/auto */ + sv_setsv(subdir, libdir); + sv_catpv(subdir, archpat_auto); + if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); + + /* .../archname if -d .../archname/auto */ + sv_insert(subdir, SvCUR(libdir) + sizeof(ARCHNAME), + strlen(patchlevel) + 1, "", 0); + if (Stat(SvPVX(subdir), &tmpstatbuf) >= 0 && + S_ISDIR(tmpstatbuf.st_mode)) + av_push(GvAVn(incgv), + newSVpv(SvPVX(subdir), SvCUR(subdir) - sizeof "auto")); + } + + /* finally push this lib directory on the end of @INC */ + av_push(GvAVn(incgv), libdir); + } + + SvREFCNT_dec(subdir); +} + +void +call_list(oldscope, list) +I32 oldscope; +AV* list; +{ + dTHR; + line_t oldline = curcop->cop_line; + STRLEN len; + dJMPENV; + int ret; + + while (AvFILL(list) >= 0) { + CV *cv = (CV*)av_shift(list); + + SAVEFREESV(cv); + + JMPENV_PUSH(ret); + switch (ret) { + case 0: { + SV* atsv = GvSV(errgv); + PUSHMARK(stack_sp); + perl_call_sv((SV*)cv, G_EVAL|G_DISCARD); + (void)SvPV(atsv, len); + if (len) { + JMPENV_POP; + curcop = &compiling; + curcop->cop_line = oldline; + if (list == beginav) + sv_catpv(atsv, "BEGIN failed--compilation aborted"); + else + sv_catpv(atsv, "END failed--cleanup aborted"); + while (scopestack_ix > oldscope) + LEAVE; + croak("%s", SvPVX(atsv)); + } + } + break; + case 1: + STATUS_ALL_FAILURE; + /* FALL THROUGH */ + case 2: + /* my_exit() was called */ + while (scopestack_ix > oldscope) + LEAVE; + curstash = defstash; + if (endav) + call_list(oldscope, endav); + FREETMPS; + JMPENV_POP; + curcop = &compiling; + curcop->cop_line = oldline; + if (statusvalue) { + if (list == beginav) + croak("BEGIN failed--compilation aborted"); + else + croak("END failed--cleanup aborted"); + } + my_exit_jump(); + /* NOTREACHED */ + case 3: + if (!restartop) { + PerlIO_printf(PerlIO_stderr(), "panic: restartop\n"); + FREETMPS; + break; + } + JMPENV_POP; + curcop = &compiling; + curcop->cop_line = oldline; + JMPENV_JUMP(3); + } + JMPENV_POP; + } +} + +void +my_exit(status) +U32 status; +{ + dTHR; + +#ifdef USE_THREADS + DEBUG_L(PerlIO_printf(Perl_debug_log, "my_exit: thread 0x%lx, status %lu\n", + (unsigned long) thr, (unsigned long) status)); +#endif /* USE_THREADS */ + switch (status) { + case 0: + STATUS_ALL_SUCCESS; + break; + case 1: + STATUS_ALL_FAILURE; + break; + default: + STATUS_NATIVE_SET(status); + break; + } + my_exit_jump(); +} -#ifndef PRIVLIB -#define PRIVLIB "/usr/local/lib/perl" +void +my_failure_exit() +{ +#ifdef VMS + if (vaxc$errno & 1) { + if (STATUS_NATIVE & 1) /* fortuitiously includes "-1" */ + STATUS_NATIVE_SET(44); + } + else { + if (!vaxc$errno && errno) /* unlikely */ + STATUS_NATIVE_SET(44); + else + STATUS_NATIVE_SET(vaxc$errno); + } +#else + if (errno & 255) + STATUS_POSIX_SET(errno); + else if (STATUS_POSIX == 0) + STATUS_POSIX_SET(255); #endif - incpush(PRIVLIB); - (void)av_push(GvAVn(incgv),newSVpv(".",1)); + my_exit_jump(); +} + +static void +my_exit_jump() +{ + dTHR; + register CONTEXT *cx; + I32 gimme; + SV **newsp; + + if (e_tmpname) { + if (e_fp) { + PerlIO_close(e_fp); + e_fp = Nullfp; + } + (void)UNLINK(e_tmpname); + Safefree(e_tmpname); + e_tmpname = Nullch; + } + + if (cxstack_ix >= 0) { + if (cxstack_ix > 0) + dounwind(0); + POPBLOCK(cx,curpm); + LEAVE; + } + + JMPENV_JUMP(2); }