| char rcsid[] = "$RCSfile$$Revision$$Date$\nPatch level: ###\n"; |
| /* |
| * Copyright (c) 1989, Larry Wall |
| * |
| * You may distribute under the terms of the GNU General Public License |
| * as specified in the README file that comes with the perl 3.0 kit. |
| * |
| * $Log$ |
| * Revision 1.1 2004/02/17 22:21:16 criswell |
| * Initial commit of the perl Malloc Benchmark. I've cheated a little by |
| * generating the yacc output files and committing them directly, but it was |
| * easier than disabling the Bison Voodoo that gets executed by default. |
| * |
| * 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. |
| * |
| */ |
| |
| #include "EXTERN.h" |
| #include "perl.h" |
| #include "perly.h" |
| #ifdef MSDOS |
| #include "patchlev.h" |
| #else |
| #include "patchlevel.h" |
| #endif |
| |
| #ifdef IAMSUID |
| #ifndef DOSUID |
| #define DOSUID |
| #endif |
| #endif |
| |
| #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| #ifdef DOSUID |
| #undef DOSUID |
| #endif |
| #endif |
| |
| static char* moreswitches(); |
| static char* cddir; |
| static bool minus_c; |
| static char patchlevel[6]; |
| static char *nrs = "\n"; |
| static int nrschar = '\n'; /* final char of rs, or 0777 if none */ |
| static int nrslen = 1; |
| |
| main(argc,argv,env) |
| register int argc; |
| register char **argv; |
| register char **env; |
| { |
| register STR *str; |
| register char *s; |
| char *index(), *strcpy(), *getenv(); |
| bool dosearch = FALSE; |
| #ifdef DOSUID |
| char *validarg = ""; |
| #endif |
| |
| #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
| #ifdef IAMSUID |
| #undef IAMSUID |
| fatal("suidperl is no longer needed since the kernel can now execute\n\ |
| setuid perl scripts securely.\n"); |
| #endif |
| #endif |
| |
| #ifdef BWGC |
| { |
| extern gc_init(); |
| gc_init(); |
| } |
| #endif BWGC |
| |
| origargv = argv; |
| origargc = argc; |
| origenviron = environ; |
| uid = (int)getuid(); |
| euid = (int)geteuid(); |
| gid = (int)getgid(); |
| egid = (int)getegid(); |
| sprintf(patchlevel,"%3.3s%2.2d", index(rcsid,'4'), PATCHLEVEL); |
| #ifdef MSDOS |
| /* |
| * There is no way we can refer to them from Perl so close them to save |
| * space. The other alternative would be to provide STDAUX and STDPRN |
| * filehandles. |
| */ |
| (void)fclose(stdaux); |
| (void)fclose(stdprn); |
| #endif |
| if (do_undump) { |
| origfilename = savestr(argv[0]); |
| do_undump = 0; |
| loop_ptr = -1; /* start label stack again */ |
| goto just_doit; |
| } |
| (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); |
| linestr = Str_new(65,80); |
| str_nset(linestr,"",0); |
| str = str_make("",0); /* first used for -I flags */ |
| curstash = defstash = hnew(0); |
| curstname = str_make("main",4); |
| stab_xhash(stabent("_main",TRUE)) = defstash; |
| defstash->tbl_name = "main"; |
| incstab = hadd(aadd(stabent("INC",TRUE))); |
| incstab->str_pok |= SP_MULTI; |
| for (argc--,argv++; argc > 0; argc--,argv++) { |
| if (argv[0][0] != '-' || !argv[0][1]) |
| break; |
| #ifdef DOSUID |
| if (*validarg) |
| validarg = " PHOOEY "; |
| else |
| validarg = argv[0]; |
| #endif |
| s = argv[0]+1; |
| reswitch: |
| switch (*s) { |
| case '0': |
| case 'a': |
| case 'c': |
| case 'd': |
| case 'D': |
| case 'i': |
| case 'l': |
| case 'n': |
| case 'p': |
| case 'u': |
| case 'U': |
| case 'v': |
| case 'w': |
| if (s = moreswitches(s)) |
| goto reswitch; |
| break; |
| |
| case 'e': |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -e allowed in setuid scripts"); |
| #endif |
| if (!e_fp) { |
| e_tmpname = savestr(TMPPATH); |
| (void)mktemp(e_tmpname); |
| e_fp = fopen(e_tmpname,"w"); |
| if (!e_fp) |
| fatal("Cannot open temporary file"); |
| } |
| if (argv[1]) { |
| fputs(argv[1],e_fp); |
| argc--,argv++; |
| } |
| (void)putc('\n', e_fp); |
| break; |
| case 'I': |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -I allowed in setuid scripts"); |
| #endif |
| str_cat(str,"-"); |
| str_cat(str,s); |
| str_cat(str," "); |
| if (*++s) { |
| (void)apush(stab_array(incstab),str_make(s,0)); |
| } |
| else if (argv[1]) { |
| (void)apush(stab_array(incstab),str_make(argv[1],0)); |
| str_cat(str,argv[1]); |
| argc--,argv++; |
| str_cat(str," "); |
| } |
| break; |
| case 'P': |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -P allowed in setuid scripts"); |
| #endif |
| preprocess = TRUE; |
| s++; |
| goto reswitch; |
| case 's': |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -s allowed in setuid scripts"); |
| #endif |
| doswitches = TRUE; |
| s++; |
| goto reswitch; |
| case 'S': |
| dosearch = TRUE; |
| s++; |
| goto reswitch; |
| case 'x': |
| doextract = TRUE; |
| s++; |
| if (*s) |
| cddir = savestr(s); |
| break; |
| case '-': |
| argc--,argv++; |
| goto switch_end; |
| case 0: |
| break; |
| default: |
| fatal("Unrecognized switch: -%s",s); |
| } |
| } |
| switch_end: |
| if (e_fp) { |
| (void)fclose(e_fp); |
| argc++,argv--; |
| argv[0] = e_tmpname; |
| } |
| |
| #ifdef MSDOS |
| #define PERLLIB_SEP ';' |
| #else |
| #define PERLLIB_SEP ':' |
| #endif |
| #ifndef TAINT /* Can't allow arbitrary PERLLIB in setuid script */ |
| { |
| char * s2 = getenv("PERLLIB"); |
| |
| if ( s2 ) { |
| /* Break at all separators */ |
| while ( *s2 ) { |
| /* First, skip any consecutive separators */ |
| while ( *s2 == PERLLIB_SEP ) { |
| /* Uncomment the next line for PATH semantics */ |
| /* (void)apush(stab_array(incstab),str_make(".",1)); */ |
| s2++; |
| } |
| if ( (s = index(s2,PERLLIB_SEP)) != Nullch ) { |
| (void)apush(stab_array(incstab),str_make(s2,(int)(s-s2))); |
| s2 = s+1; |
| } else { |
| (void)apush(stab_array(incstab),str_make(s2,0)); |
| break; |
| } |
| } |
| } |
| } |
| #endif /* TAINT */ |
| |
| #ifndef PRIVLIB |
| #define PRIVLIB "/usr/local/lib/perl" |
| #endif |
| (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); |
| (void)apush(stab_array(incstab),str_make(".",1)); |
| |
| str_set(&str_no,No); |
| str_set(&str_yes,Yes); |
| |
| /* open script */ |
| |
| if (argv[0] == Nullch) |
| #ifdef MSDOS |
| { |
| if ( isatty(fileno(stdin)) ) |
| moreswitches("v"); |
| argv[0] = "-"; |
| } |
| #else |
| argv[0] = "-"; |
| #endif |
| if (dosearch && !index(argv[0], '/') && (s = getenv("PATH"))) { |
| char *xfound = Nullch, *xfailed = Nullch; |
| int len; |
| |
| bufend = s + strlen(s); |
| while (*s) { |
| #ifndef MSDOS |
| s = cpytill(tokenbuf,s,bufend,':',&len); |
| #else |
| for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); |
| tokenbuf[len] = '\0'; |
| #endif |
| if (*s) |
| s++; |
| #ifndef MSDOS |
| if (len && tokenbuf[len-1] != '/') |
| #else |
| if (len && tokenbuf[len-1] != '\\') |
| #endif |
| (void)strcat(tokenbuf+len,"/"); |
| (void)strcat(tokenbuf+len,argv[0]); |
| #ifdef DEBUGGING |
| if (debug & 1) |
| fprintf(stderr,"Looking for %s\n",tokenbuf); |
| #endif |
| if (stat(tokenbuf,&statbuf) < 0) /* not there? */ |
| continue; |
| if (S_ISREG(statbuf.st_mode) |
| && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { |
| xfound = tokenbuf; /* bingo! */ |
| break; |
| } |
| if (!xfailed) |
| xfailed = savestr(tokenbuf); |
| } |
| if (!xfound) |
| fatal("Can't execute %s", xfailed ? xfailed : argv[0] ); |
| if (xfailed) |
| Safefree(xfailed); |
| argv[0] = savestr(xfound); |
| } |
| |
| fdpid = anew(Nullstab); /* for remembering popen pids by fd */ |
| pidstatus = hnew(COEFFSIZE);/* for remembering status of dead pids */ |
| |
| origfilename = savestr(argv[0]); |
| curcmd->c_filestab = fstab(origfilename); |
| if (strEQ(origfilename,"-")) |
| argv[0] = ""; |
| if (preprocess) { |
| str_cat(str,"-I"); |
| str_cat(str,PRIVLIB); |
| (void)sprintf(buf, "\ |
| %ssed %s -e '/^[^#]/b' \ |
| -e '/^#[ ]*include[ ]/b' \ |
| -e '/^#[ ]*define[ ]/b' \ |
| -e '/^#[ ]*if[ ]/b' \ |
| -e '/^#[ ]*ifdef[ ]/b' \ |
| -e '/^#[ ]*ifndef[ ]/b' \ |
| -e '/^#[ ]*else/b' \ |
| -e '/^#[ ]*endif/b' \ |
| -e 's/^#.*//' \ |
| %s | %s -C %s %s", |
| #ifdef MSDOS |
| "", |
| #else |
| "/bin/", |
| #endif |
| (doextract ? "-e '1,/^#/d\n'" : ""), |
| argv[0], CPPSTDIN, str_get(str), CPPMINUS); |
| #ifdef DEBUGGING |
| if (debug & 64) { |
| fputs(buf,stderr); |
| fputs("\n",stderr); |
| } |
| #endif |
| doextract = FALSE; |
| #ifdef IAMSUID /* actually, this is caught earlier */ |
| if (euid != uid && !euid) /* if running suidperl */ |
| #ifdef HAS_SETEUID |
| (void)seteuid(uid); /* musn't stay setuid root */ |
| #else |
| #ifdef HAS_SETREUID |
| (void)setreuid(-1, uid); |
| #else |
| setuid(uid); |
| #endif |
| #endif |
| #endif /* IAMSUID */ |
| rsfp = mypopen(buf,"r"); |
| } |
| else if (!*argv[0]) |
| rsfp = stdin; |
| else |
| rsfp = fopen(argv[0],"r"); |
| if (rsfp == Nullfp) { |
| #ifdef DOSUID |
| #ifndef IAMSUID /* in case script is not readable before setuid */ |
| if (euid && stat(stab_val(curcmd->c_filestab)->str_ptr,&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"); |
| } |
| #endif |
| #endif |
| fatal("Can't open perl script \"%s\": %s\n", |
| stab_val(curcmd->c_filestab)->str_ptr, strerror(errno)); |
| } |
| str_free(str); /* free -I directories */ |
| str = Nullstr; |
| |
| /* do we need to emulate setuid on scripts? */ |
| |
| /* This code is for those BSD systems that have setuid #! scripts disabled |
| * in the kernel because of a security problem. Merely defining DOSUID |
| * in perl will not fix that problem, but if you have disabled setuid |
| * scripts in the kernel, this will attempt to emulate setuid and setgid |
| * on scripts that have those now-otherwise-useless bits set. The setuid |
| * root version must be called suidperl or sperlN.NNN. If regular perl |
| * discovers that it has opened a setuid script, it calls suidperl with |
| * the same argv that it had. If suidperl finds that the script it has |
| * just opened is NOT setuid root, it sets the effective uid back to the |
| * uid. We don't just make perl setuid root because that loses the |
| * effective uid we had before invoking perl, if it was different from the |
| * uid. |
| * |
| * 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)) { |
| int len; |
| |
| #ifdef IAMSUID |
| #ifndef HAS_SETREUID |
| /* On this access check to make sure the directories are readable, |
| * there is actually a small window that the user could use to make |
| * filename point to an accessible directory. So there is a faint |
| * chance that someone could execute a setuid script down in a |
| * non-accessible directory. I don't know what to do about that. |
| * But I don't think it's too important. The manual lies when |
| * it says access() is useful in setuid programs. |
| */ |
| if (access(stab_val(curcmd->c_filestab)->str_ptr,1)) /*double check*/ |
| fatal("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 |
| * inode to make sure we did stat() on the same file we opened. |
| * Then we just have to make sure he or she can execute it. |
| */ |
| { |
| struct stat tmpstatbuf; |
| |
| if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) |
| fatal("Can't swap uid and euid"); /* really paranoid */ |
| if (stat(stab_val(curcmd->c_filestab)->str_ptr,&tmpstatbuf) < 0) |
| fatal("Permission denied"); /* testing full pathname here */ |
| if (tmpstatbuf.st_dev != statbuf.st_dev || |
| tmpstatbuf.st_ino != statbuf.st_ino) { |
| (void)fclose(rsfp); |
| if (rsfp = mypopen("/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, |
| stab_val(curcmd->c_filestab)->str_ptr, |
| statbuf.st_uid, statbuf.st_gid); |
| (void)mypclose(rsfp); |
| } |
| fatal("Permission denied\n"); |
| } |
| if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) |
| fatal("Can't reswap uid and euid"); |
| if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
| fatal("Permission denied\n"); |
| } |
| #endif /* HAS_SETREUID */ |
| #endif /* IAMSUID */ |
| |
| if (!S_ISREG(statbuf.st_mode)) |
| fatal("Permission denied"); |
| if (statbuf.st_mode & S_IWOTH) |
| fatal("Setuid/gid script is writable by world"); |
| doswitches = FALSE; /* -s is insecure in suid */ |
| curcmd->c_line++; |
| if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
| strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ |
| fatal("No #! line"); |
| s = tokenbuf+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"); |
| while (*s == ' ' || *s == '\t') s++; |
| /* |
| * #! arg must be what we saw above. They can invoke it by |
| * mentioning suidperl explicitly, but they may not add any strange |
| * arguments beyond what #! says if they do invoke suidperl that way. |
| */ |
| len = strlen(validarg); |
| if (strEQ(validarg," PHOOEY ") || |
| strnNE(s,validarg,len) || !isspace(s[len])) |
| fatal("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\ |
| 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); |
| #ifndef IAMSUID |
| (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
| execv(buf, origargv); /* try again */ |
| #endif |
| fatal("Can't do setuid\n"); |
| } |
| |
| if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) |
| #ifdef HAS_SETEGID |
| (void)setegid(statbuf.st_gid); |
| #else |
| #ifdef HAS_SETREGID |
| (void)setregid((GIDTYPE)-1,statbuf.st_gid); |
| #else |
| setgid(statbuf.st_gid); |
| #endif |
| #endif |
| if (statbuf.st_mode & S_ISUID) { |
| if (statbuf.st_uid != euid) |
| #ifdef HAS_SETEUID |
| (void)seteuid(statbuf.st_uid); /* all that for this */ |
| #else |
| #ifdef HAS_SETREUID |
| (void)setreuid((UIDTYPE)-1,statbuf.st_uid); |
| #else |
| setuid(statbuf.st_uid); |
| #endif |
| #endif |
| } |
| else if (uid) /* oops, mustn't run as root */ |
| #ifdef HAS_SETEUID |
| (void)seteuid((UIDTYPE)uid); |
| #else |
| #ifdef HAS_SETREUID |
| (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); |
| #else |
| setuid((UIDTYPE)uid); |
| #endif |
| #endif |
| uid = (int)getuid(); |
| euid = (int)geteuid(); |
| gid = (int)getgid(); |
| egid = (int)getegid(); |
| if (!cando(S_IXUSR,TRUE,&statbuf)) |
| fatal("Permission denied\n"); /* they can't do this */ |
| } |
| #ifdef IAMSUID |
| else if (preprocess) |
| fatal("-P not allowed for setuid/setgid script\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 */ |
| #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 */ |
| 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\ |
| 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 */ |
| |
| #if !defined(IAMSUID) && !defined(TAINT) |
| |
| /* skip forward in input to the real script? */ |
| |
| while (doextract) { |
| if ((s = str_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 */ |
| doextract = FALSE; |
| if (s = instr(s,"perl -")) { |
| s += 6; |
| while (s = moreswitches(s)) ; |
| } |
| if (cddir && chdir(cddir) < 0) |
| fatal("Can't chdir to %s",cddir); |
| } |
| } |
| #endif /* !defined(IAMSUID) && !defined(TAINT) */ |
| |
| defstab = stabent("_",TRUE); |
| |
| if (perldb) { |
| debstash = hnew(0); |
| stab_xhash(stabent("_DB",TRUE)) = debstash; |
| curstash = debstash; |
| dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE)))); |
| tmpstab->str_pok |= SP_MULTI; |
| dbargs->ary_flags = 0; |
| subname = str_make("main",4); |
| DBstab = stabent("DB",TRUE); |
| DBstab->str_pok |= SP_MULTI; |
| DBline = stabent("dbline",TRUE); |
| DBline->str_pok |= SP_MULTI; |
| DBsub = hadd(tmpstab = stabent("sub",TRUE)); |
| tmpstab->str_pok |= SP_MULTI; |
| DBsingle = stab_val((tmpstab = stabent("single",TRUE))); |
| tmpstab->str_pok |= SP_MULTI; |
| DBtrace = stab_val((tmpstab = stabent("trace",TRUE))); |
| tmpstab->str_pok |= SP_MULTI; |
| DBsignal = stab_val((tmpstab = stabent("signal",TRUE))); |
| tmpstab->str_pok |= SP_MULTI; |
| curstash = defstash; |
| } |
| |
| /* init tokener */ |
| |
| bufend = bufptr = str_get(linestr); |
| |
| savestack = anew(Nullstab); /* for saving non-local values */ |
| stack = anew(Nullstab); /* for saving non-local values */ |
| stack->ary_flags = 0; /* not a real array */ |
| afill(stack,63); afill(stack,-1); /* preextend stack */ |
| afill(savestack,63); afill(savestack,-1); |
| |
| /* now parse the script */ |
| |
| error_count = 0; |
| if (yyparse() || error_count) { |
| if (minus_c) |
| fatal("%s had compilation errors.\n", origfilename); |
| else { |
| fatal("Execution of %s aborted due to compilation errors.\n", |
| origfilename); |
| } |
| } |
| |
| New(50,loop_stack,128,struct loop); |
| #ifdef DEBUGGING |
| if (debug) { |
| New(51,debname,128,char); |
| New(52,debdelim,128,char); |
| } |
| #endif |
| curstash = defstash; |
| |
| preprocess = FALSE; |
| if (e_fp) { |
| e_fp = Nullfp; |
| (void)UNLINK(e_tmpname); |
| } |
| |
| /* initialize everything that won't change if we undump */ |
| |
| if (sigstab = stabent("SIG",allstabs)) { |
| sigstab->str_pok |= SP_MULTI; |
| (void)hadd(sigstab); |
| } |
| |
| magicalize("!#?^~=-%.+&*()<>,\\/[|`':\004\t\024\027"); |
| userinit(); /* in case linked C routines want magical variables */ |
| |
| amperstab = stabent("&",allstabs); |
| leftstab = stabent("`",allstabs); |
| rightstab = stabent("'",allstabs); |
| sawampersand = (amperstab || leftstab || rightstab); |
| if (tmpstab = stabent(":",allstabs)) |
| str_set(STAB_STR(tmpstab),chopset); |
| if (tmpstab = stabent("\024",allstabs)) |
| time(&basetime); |
| |
| /* these aren't necessarily magical */ |
| if (tmpstab = stabent(";",allstabs)) |
| str_set(STAB_STR(tmpstab),"\034"); |
| if (tmpstab = stabent("]",allstabs)) { |
| str = STAB_STR(tmpstab); |
| str_set(str,rcsid); |
| str->str_u.str_nval = atof(patchlevel); |
| str->str_nok = 1; |
| } |
| str_nset(stab_val(stabent("\"", TRUE)), " ", 1); |
| |
| stdinstab = stabent("STDIN",TRUE); |
| stdinstab->str_pok |= SP_MULTI; |
| stab_io(stdinstab) = stio_new(); |
| stab_io(stdinstab)->ifp = stdin; |
| tmpstab = stabent("stdin",TRUE); |
| stab_io(tmpstab) = stab_io(stdinstab); |
| tmpstab->str_pok |= SP_MULTI; |
| |
| tmpstab = stabent("STDOUT",TRUE); |
| tmpstab->str_pok |= SP_MULTI; |
| stab_io(tmpstab) = stio_new(); |
| stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; |
| defoutstab = tmpstab; |
| tmpstab = stabent("stdout",TRUE); |
| stab_io(tmpstab) = stab_io(defoutstab); |
| tmpstab->str_pok |= SP_MULTI; |
| |
| curoutstab = stabent("STDERR",TRUE); |
| curoutstab->str_pok |= SP_MULTI; |
| stab_io(curoutstab) = stio_new(); |
| stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; |
| tmpstab = stabent("stderr",TRUE); |
| stab_io(tmpstab) = stab_io(curoutstab); |
| tmpstab->str_pok |= SP_MULTI; |
| curoutstab = defoutstab; /* switch back to STDOUT */ |
| |
| statname = Str_new(66,0); /* last filename we did stat on */ |
| |
| /* now that script is parsed, we can modify record separator */ |
| |
| rs = nrs; |
| rslen = nrslen; |
| rschar = nrschar; |
| str_nset(stab_val(stabent("/", TRUE)), rs, rslen); |
| |
| if (do_undump) |
| my_unexec(); |
| |
| just_doit: /* come here if running an undumped a.out */ |
| argc--,argv++; /* skip name of script */ |
| if (doswitches) { |
| for (; argc > 0 && **argv == '-'; argc--,argv++) { |
| if (argv[0][1] == '-') { |
| argc--,argv++; |
| break; |
| } |
| if (s = index(argv[0], '=')) { |
| *s++ = '\0'; |
| str_set(stab_val(stabent(argv[0]+1,TRUE)),s); |
| } |
| else |
| str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); |
| } |
| } |
| #ifdef TAINT |
| tainted = 1; |
| #endif |
| if (tmpstab = stabent("0",allstabs)) { |
| str_set(stab_val(tmpstab),origfilename); |
| magicname("0", Nullch, 0); |
| } |
| if (tmpstab = stabent("\020",allstabs)) |
| str_set(stab_val(tmpstab),origargv[0]); |
| if (argvstab = stabent("ARGV",allstabs)) { |
| argvstab->str_pok |= SP_MULTI; |
| (void)aadd(argvstab); |
| aclear(stab_array(argvstab)); |
| for (; argc > 0; argc--,argv++) { |
| (void)apush(stab_array(argvstab),str_make(argv[0],0)); |
| } |
| } |
| #ifdef TAINT |
| (void) stabent("ENV",TRUE); /* must test PATH and IFS */ |
| #endif |
| if (envstab = stabent("ENV",allstabs)) { |
| envstab->str_pok |= SP_MULTI; |
| (void)hadd(envstab); |
| hclear(stab_hash(envstab), FALSE); |
| if (env != environ) |
| environ[0] = Nullch; |
| for (; *env; env++) { |
| if (!(s = index(*env,'='))) |
| continue; |
| *s++ = '\0'; |
| str = str_make(s--,0); |
| str_magic(str, envstab, 'E', *env, s - *env); |
| (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); |
| *s = '='; |
| } |
| } |
| #ifdef TAINT |
| tainted = 0; |
| #endif |
| if (tmpstab = stabent("$",allstabs)) |
| str_numset(STAB_STR(tmpstab),(double)getpid()); |
| |
| if (dowarn) { |
| stab_check('A','Z'); |
| stab_check('a','z'); |
| } |
| |
| if (setjmp(top_env)) /* sets goto_targ on longjump */ |
| loop_ptr = -1; /* start label stack again */ |
| |
| #ifdef DEBUGGING |
| if (debug & 1024) |
| dump_all(); |
| if (debug) |
| fprintf(stderr,"\nEXECUTING...\n\n"); |
| #endif |
| |
| if (minus_c) { |
| fprintf(stderr,"%s syntax OK\n", origfilename); |
| exit(0); |
| } |
| |
| /* do it */ |
| |
| (void) cmd_exec(main_root,G_SCALAR,-1); |
| |
| if (goto_targ) |
| fatal("Can't find label \"%s\"--aborting",goto_targ); |
| exit(0); |
| /* NOTREACHED */ |
| } |
| |
| void |
| magicalize(list) |
| register char *list; |
| { |
| char sym[2]; |
| |
| sym[1] = '\0'; |
| while (*sym = *list++) |
| magicname(sym, Nullch, 0); |
| } |
| |
| void |
| magicname(sym,name,namlen) |
| char *sym; |
| char *name; |
| int namlen; |
| { |
| register STAB *stab; |
| |
| if (stab = stabent(sym,allstabs)) { |
| stab_flags(stab) = SF_VMAGIC; |
| str_magic(stab_val(stab), stab, 0, name, namlen); |
| } |
| } |
| |
| /* this routine is in perl.c by virtue of being sort of an alternate main() */ |
| |
| int |
| do_eval(str,optype,stash,gimme,arglast) |
| STR *str; |
| int optype; |
| HASH *stash; |
| int gimme; |
| int *arglast; |
| { |
| STR **st = stack->ary_array; |
| int retval; |
| CMD *myroot = Nullcmd; |
| ARRAY *ar; |
| int i; |
| CMD * VOLATILE oldcurcmd = curcmd; |
| VOLATILE int oldtmps_base = tmps_base; |
| VOLATILE int oldsave = savestack->ary_fill; |
| VOLATILE int oldperldb = perldb; |
| SPAT * VOLATILE oldspat = curspat; |
| SPAT * VOLATILE oldlspat = lastspat; |
| static char *last_eval = Nullch; |
| static CMD *last_root = Nullcmd; |
| VOLATILE int sp = arglast[0]; |
| char *specfilename; |
| char *tmpfilename; |
| int parsing = 1; |
| |
| tmps_base = tmps_max; |
| if (curstash != stash) { |
| (void)savehptr(&curstash); |
| curstash = stash; |
| } |
| str_set(stab_val(stabent("@",TRUE)),""); |
| if (curcmd->c_line == 0) /* don't debug debugger... */ |
| perldb = FALSE; |
| curcmd = &compiling; |
| if (optype == O_EVAL) { /* normal eval */ |
| curcmd->c_filestab = fstab("(eval)"); |
| curcmd->c_line = 1; |
| str_sset(linestr,str); |
| str_cat(linestr,";"); /* be kind to them */ |
| } |
| else { |
| if (last_root && !in_eval) { |
| Safefree(last_eval); |
| last_eval = Nullch; |
| cmd_free(last_root); |
| last_root = Nullcmd; |
| } |
| specfilename = str_get(str); |
| str_set(linestr,""); |
| if (optype == O_REQUIRE && &str_undef != |
| hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { |
| curcmd = oldcurcmd; |
| tmps_base = oldtmps_base; |
| st[++sp] = &str_yes; |
| perldb = oldperldb; |
| return sp; |
| } |
| tmpfilename = savestr(specfilename); |
| if (index("/.", *tmpfilename)) |
| rsfp = fopen(tmpfilename,"r"); |
| else { |
| ar = stab_array(incstab); |
| for (i = 0; i <= ar->ary_fill; i++) { |
| (void)sprintf(buf, "%s/%s", |
| str_get(afetch(ar,i,TRUE)), specfilename); |
| rsfp = fopen(buf,"r"); |
| if (rsfp) { |
| char *s = buf; |
| |
| if (*s == '.' && s[1] == '/') |
| s += 2; |
| Safefree(tmpfilename); |
| tmpfilename = savestr(s); |
| break; |
| } |
| } |
| } |
| curcmd->c_filestab = fstab(tmpfilename); |
| Safefree(tmpfilename); |
| tmpfilename = Nullch; |
| if (!rsfp) { |
| curcmd = oldcurcmd; |
| tmps_base = oldtmps_base; |
| if (optype == O_REQUIRE) { |
| sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); |
| if (instr(tokenbuf,".h ")) |
| strcat(tokenbuf," (change .h to .ph maybe?)"); |
| if (instr(tokenbuf,".ph ")) |
| strcat(tokenbuf," (did you run h2ph?)"); |
| fatal("%s",tokenbuf); |
| } |
| if (gimme != G_ARRAY) |
| st[++sp] = &str_undef; |
| perldb = oldperldb; |
| return sp; |
| } |
| curcmd->c_line = 0; |
| } |
| in_eval++; |
| oldoldbufptr = oldbufptr = bufptr = str_get(linestr); |
| bufend = bufptr + linestr->str_cur; |
| if (++loop_ptr >= loop_max) { |
| loop_max += 128; |
| Renew(loop_stack, loop_max, struct loop); |
| } |
| loop_stack[loop_ptr].loop_label = "_EVAL_"; |
| loop_stack[loop_ptr].loop_sp = sp; |
| #ifdef DEBUGGING |
| if (debug & 4) { |
| deb("(Pushing label #%d _EVAL_)\n", loop_ptr); |
| } |
| #endif |
| eval_root = Nullcmd; |
| if (setjmp(loop_stack[loop_ptr].loop_env)) { |
| retval = 1; |
| } |
| else { |
| error_count = 0; |
| if (rsfp) { |
| retval = yyparse(); |
| retval |= error_count; |
| } |
| else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){ |
| retval = 0; |
| eval_root = last_root; /* no point in reparsing */ |
| } |
| else if (in_eval == 1) { |
| if (last_root) { |
| Safefree(last_eval); |
| last_eval = Nullch; |
| cmd_free(last_root); |
| } |
| last_root = Nullcmd; |
| last_eval = savestr(bufptr); |
| retval = yyparse(); |
| retval |= error_count; |
| if (!retval) |
| last_root = eval_root; |
| if (!last_root) { |
| Safefree(last_eval); |
| last_eval = Nullch; |
| } |
| } |
| else |
| retval = yyparse(); |
| } |
| myroot = eval_root; /* in case cmd_exec does another eval! */ |
| |
| if (retval) { |
| st = stack->ary_array; |
| sp = arglast[0]; |
| if (gimme != G_ARRAY) |
| st[++sp] = &str_undef; |
| if (parsing) { |
| #ifndef MANGLEDPARSE |
| #ifdef DEBUGGING |
| if (debug & 128) |
| fprintf(stderr,"Freeing eval_root %lx\n",(long)eval_root); |
| #endif |
| cmd_free(eval_root); |
| #endif |
| if (eval_root == last_root) |
| last_root = Nullcmd; |
| eval_root = myroot = Nullcmd; |
| } |
| if (rsfp) { |
| fclose(rsfp); |
| rsfp = 0; |
| } |
| } |
| else { |
| parsing = 0; |
| sp = cmd_exec(eval_root,gimme,sp); |
| st = stack->ary_array; |
| for (i = arglast[0] + 1; i <= sp; i++) |
| st[i] = str_mortal(st[i]); |
| /* if we don't save result, free zaps it */ |
| if (in_eval != 1 && myroot != last_root) |
| cmd_free(myroot); |
| } |
| |
| perldb = oldperldb; |
| in_eval--; |
| #ifdef DEBUGGING |
| if (debug & 4) { |
| char *tmps = loop_stack[loop_ptr].loop_label; |
| deb("(Popping label #%d %s)\n",loop_ptr, |
| tmps ? tmps : "" ); |
| } |
| #endif |
| loop_ptr--; |
| tmps_base = oldtmps_base; |
| curspat = oldspat; |
| lastspat = oldlspat; |
| if (savestack->ary_fill > oldsave) /* let them use local() */ |
| restorelist(oldsave); |
| |
| if (optype != O_EVAL) { |
| if (retval) { |
| if (optype == O_REQUIRE) |
| fatal("%s", str_get(stab_val(stabent("@",TRUE)))); |
| } |
| else { |
| curcmd = oldcurcmd; |
| if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { |
| (void)hstore(stab_hash(incstab), specfilename, |
| strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)), |
| 0 ); |
| } |
| else if (optype == O_REQUIRE) |
| fatal("%s did not return a true value", specfilename); |
| } |
| } |
| curcmd = oldcurcmd; |
| return sp; |
| } |
| |
| /* This routine handles any switches that can be given during run */ |
| |
| static char * |
| moreswitches(s) |
| char *s; |
| { |
| int numlen; |
| |
| reswitch: |
| switch (*s) { |
| case '0': |
| nrschar = scanoct(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'; |
| } |
| return s + numlen; |
| case 'a': |
| minus_a = TRUE; |
| s++; |
| return s; |
| case 'c': |
| minus_c = TRUE; |
| s++; |
| return s; |
| case 'd': |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -d allowed in setuid scripts"); |
| #endif |
| perldb = TRUE; |
| s++; |
| return s; |
| case 'D': |
| #ifdef DEBUGGING |
| #ifdef TAINT |
| if (euid != uid || egid != gid) |
| fatal("No -D allowed in setuid scripts"); |
| #endif |
| debug = atoi(s+1) | 32768; |
| #else |
| warn("Recompile perl with -DDEBUGGING to use -D switch\n"); |
| #endif |
| for (s++; isdigit(*s); s++) ; |
| return s; |
| case 'i': |
| inplace = savestr(s+1); |
| 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 |
| if (*++s) { |
| (void)apush(stab_array(incstab),str_make(s,0)); |
| } |
| else |
| fatal("No space allowed after -I"); |
| break; |
| case 'l': |
| minus_l = TRUE; |
| s++; |
| if (isdigit(*s)) { |
| ors = savestr("\n"); |
| orslen = 1; |
| *ors = scanoct(s, 3 + (*s == '0'), &numlen); |
| s += numlen; |
| } |
| else { |
| ors = nsavestr(nrs,nrslen); |
| orslen = nrslen; |
| } |
| return s; |
| case 'n': |
| minus_n = TRUE; |
| s++; |
| return s; |
| case 'p': |
| minus_p = TRUE; |
| s++; |
| return s; |
| case 'u': |
| do_undump = TRUE; |
| s++; |
| return s; |
| case 'U': |
| unsafe = TRUE; |
| s++; |
| return s; |
| case 'v': |
| fputs("\nThis is perl, version 4.0\n\n",stdout); |
| fputs(rcsid,stdout); |
| fputs("\nCopyright (c) 1989, 1990, 1991, Larry Wall\n",stdout); |
| #ifdef MSDOS |
| fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", |
| stdout); |
| #ifdef OS2 |
| fputs("OS/2 port Copyright (c) 1990, Raymond Chen, Kai Uwe Rommel\n", |
| stdout); |
| #endif |
| #endif |
| fputs("\n\ |
| Perl may be copied only under the terms of the GNU General Public License,\n\ |
| a copy of which can be found with the Perl 4.0 distribution kit.\n",stdout); |
| #ifdef MSDOS |
| usage(origargv[0]); |
| #endif |
| exit(0); |
| case 'w': |
| dowarn = TRUE; |
| s++; |
| return s; |
| case ' ': |
| case '\n': |
| case '\t': |
| break; |
| default: |
| fatal("Switch meaningless after -x: -%s",s); |
| } |
| return Nullch; |
| } |
| |
| /* compliments of Tom Christiansen */ |
| |
| /* unexec() can be found in the Gnu emacs distribution */ |
| |
| my_unexec() |
| { |
| #ifdef UNEXEC |
| int status; |
| extern int etext; |
| static char dumpname[BUFSIZ]; |
| static char perlpath[256]; |
| |
| sprintf (dumpname, "%s.perldump", origfilename); |
| sprintf (perlpath, "%s/perl", BIN); |
| |
| status = unexec(dumpname, perlpath, &etext, sbrk(0), 0); |
| if (status) |
| fprintf(stderr, "unexec of %s into %s failed!\n", perlpath, dumpname); |
| exit(status); |
| #else |
| # ifndef SIGABRT |
| # define SIGABRT SIGILL |
| # endif |
| # ifndef SIGILL |
| # define SIGILL 6 /* blech */ |
| # endif |
| kill(getpid(),SIGABRT); /* for use with undump */ |
| #endif |
| } |
| |
