Commit | Line | Data |
fe14fcc3 |
1 | char rcsid[] = "$Header: perl.c,v 4.0 91/03/20 01:37:44 lwall Locked $\nPatch level: ###\n"; |
8d063cd8 |
2 | /* |
a687059c |
3 | * Copyright (c) 1989, Larry Wall |
4 | * |
5 | * You may distribute under the terms of the GNU General Public License |
6 | * as specified in the README file that comes with the perl 3.0 kit. |
7 | * |
fe14fcc3 |
8 | * $Log: perl.c,v $ |
9 | * Revision 4.0 91/03/20 01:37:44 lwall |
10 | * 4.0 baseline. |
8d063cd8 |
11 | * |
12 | */ |
13 | |
378cc40b |
14 | #include "EXTERN.h" |
15 | #include "perl.h" |
16 | #include "perly.h" |
20188a90 |
17 | #ifdef MSDOS |
18 | #include "patchlev.h" |
19 | #else |
a687059c |
20 | #include "patchlevel.h" |
20188a90 |
21 | #endif |
378cc40b |
22 | |
a687059c |
23 | #ifdef IAMSUID |
24 | #ifndef DOSUID |
25 | #define DOSUID |
26 | #endif |
27 | #endif |
378cc40b |
28 | |
a687059c |
29 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
30 | #ifdef DOSUID |
31 | #undef DOSUID |
32 | #endif |
33 | #endif |
8d063cd8 |
34 | |
33b78306 |
35 | static char* moreswitches(); |
36 | static char* cddir; |
fe14fcc3 |
37 | #ifndef __STDC__ |
33b78306 |
38 | extern char **environ; |
fe14fcc3 |
39 | #endif /* ! __STDC__ */ |
33b78306 |
40 | static bool minus_c; |
27e2fb84 |
41 | static char patchlevel[6]; |
fe14fcc3 |
42 | static char *nrs = "\n"; |
43 | static int nrschar = '\n'; /* final char of rs, or 0777 if none */ |
44 | static int nrslen = 1; |
33b78306 |
45 | |
8d063cd8 |
46 | main(argc,argv,env) |
47 | register int argc; |
48 | register char **argv; |
49 | register char **env; |
50 | { |
51 | register STR *str; |
52 | register char *s; |
378cc40b |
53 | char *index(), *strcpy(), *getenv(); |
54 | bool dosearch = FALSE; |
a687059c |
55 | #ifdef DOSUID |
13281fa4 |
56 | char *validarg = ""; |
57 | #endif |
8d063cd8 |
58 | |
a687059c |
59 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
60 | #ifdef IAMSUID |
61 | #undef IAMSUID |
62 | fatal("suidperl is no longer needed since the kernel can now execute\n\ |
63 | setuid perl scripts securely.\n"); |
64 | #endif |
65 | #endif |
66 | |
ac58e20f |
67 | origargv = argv; |
68 | origargc = argc; |
fe14fcc3 |
69 | origenviron = environ; |
378cc40b |
70 | uid = (int)getuid(); |
71 | euid = (int)geteuid(); |
a687059c |
72 | gid = (int)getgid(); |
73 | egid = (int)getegid(); |
fe14fcc3 |
74 | sprintf(patchlevel,"%3.3s%2.2d", index(rcsid,'4'), PATCHLEVEL); |
0f85fab0 |
75 | #ifdef MSDOS |
76 | /* |
77 | * There is no way we can refer to them from Perl so close them to save |
78 | * space. The other alternative would be to provide STDAUX and STDPRN |
79 | * filehandles. |
80 | */ |
81 | (void)fclose(stdaux); |
82 | (void)fclose(stdprn); |
83 | #endif |
a687059c |
84 | if (do_undump) { |
33b78306 |
85 | origfilename = savestr(argv[0]); |
a687059c |
86 | do_undump = 0; |
ac58e20f |
87 | loop_ptr = -1; /* start label stack again */ |
a687059c |
88 | goto just_doit; |
89 | } |
90 | (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); |
91 | linestr = Str_new(65,80); |
378cc40b |
92 | str_nset(linestr,"",0); |
a687059c |
93 | str = str_make("",0); /* first used for -I flags */ |
94 | curstash = defstash = hnew(0); |
95 | curstname = str_make("main",4); |
96 | stab_xhash(stabent("_main",TRUE)) = defstash; |
20188a90 |
97 | defstash->tbl_name = "main"; |
33b78306 |
98 | incstab = hadd(aadd(stabent("INC",TRUE))); |
a687059c |
99 | incstab->str_pok |= SP_MULTI; |
33b78306 |
100 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 |
101 | if (argv[0][0] != '-' || !argv[0][1]) |
102 | break; |
13281fa4 |
103 | #ifdef DOSUID |
104 | if (*validarg) |
105 | validarg = " PHOOEY "; |
106 | else |
107 | validarg = argv[0]; |
108 | #endif |
109 | s = argv[0]+1; |
8d063cd8 |
110 | reswitch: |
13281fa4 |
111 | switch (*s) { |
27e2fb84 |
112 | case '0': |
378cc40b |
113 | case 'a': |
33b78306 |
114 | case 'c': |
a687059c |
115 | case 'd': |
8d063cd8 |
116 | case 'D': |
33b78306 |
117 | case 'i': |
fe14fcc3 |
118 | case 'l': |
33b78306 |
119 | case 'n': |
120 | case 'p': |
121 | case 'u': |
122 | case 'U': |
123 | case 'v': |
124 | case 'w': |
125 | if (s = moreswitches(s)) |
126 | goto reswitch; |
8d063cd8 |
127 | break; |
33b78306 |
128 | |
8d063cd8 |
129 | case 'e': |
a687059c |
130 | #ifdef TAINT |
131 | if (euid != uid || egid != gid) |
132 | fatal("No -e allowed in setuid scripts"); |
133 | #endif |
8d063cd8 |
134 | if (!e_fp) { |
a687059c |
135 | e_tmpname = savestr(TMPPATH); |
136 | (void)mktemp(e_tmpname); |
8d063cd8 |
137 | e_fp = fopen(e_tmpname,"w"); |
33b78306 |
138 | if (!e_fp) |
139 | fatal("Cannot open temporary file"); |
8d063cd8 |
140 | } |
33b78306 |
141 | if (argv[1]) { |
8d063cd8 |
142 | fputs(argv[1],e_fp); |
33b78306 |
143 | argc--,argv++; |
144 | } |
a687059c |
145 | (void)putc('\n', e_fp); |
8d063cd8 |
146 | break; |
147 | case 'I': |
a687059c |
148 | #ifdef TAINT |
149 | if (euid != uid || egid != gid) |
150 | fatal("No -I allowed in setuid scripts"); |
151 | #endif |
13281fa4 |
152 | str_cat(str,"-"); |
153 | str_cat(str,s); |
8d063cd8 |
154 | str_cat(str," "); |
a687059c |
155 | if (*++s) { |
156 | (void)apush(stab_array(incstab),str_make(s,0)); |
378cc40b |
157 | } |
33b78306 |
158 | else if (argv[1]) { |
a687059c |
159 | (void)apush(stab_array(incstab),str_make(argv[1],0)); |
8d063cd8 |
160 | str_cat(str,argv[1]); |
161 | argc--,argv++; |
162 | str_cat(str," "); |
163 | } |
164 | break; |
8d063cd8 |
165 | case 'P': |
a687059c |
166 | #ifdef TAINT |
167 | if (euid != uid || egid != gid) |
168 | fatal("No -P allowed in setuid scripts"); |
169 | #endif |
8d063cd8 |
170 | preprocess = TRUE; |
13281fa4 |
171 | s++; |
8d063cd8 |
172 | goto reswitch; |
173 | case 's': |
a687059c |
174 | #ifdef TAINT |
175 | if (euid != uid || egid != gid) |
176 | fatal("No -s allowed in setuid scripts"); |
177 | #endif |
8d063cd8 |
178 | doswitches = TRUE; |
13281fa4 |
179 | s++; |
8d063cd8 |
180 | goto reswitch; |
378cc40b |
181 | case 'S': |
182 | dosearch = TRUE; |
13281fa4 |
183 | s++; |
378cc40b |
184 | goto reswitch; |
33b78306 |
185 | case 'x': |
186 | doextract = TRUE; |
13281fa4 |
187 | s++; |
33b78306 |
188 | if (*s) |
189 | cddir = savestr(s); |
190 | break; |
8d063cd8 |
191 | case '-': |
192 | argc--,argv++; |
193 | goto switch_end; |
194 | case 0: |
195 | break; |
196 | default: |
13281fa4 |
197 | fatal("Unrecognized switch: -%s",s); |
8d063cd8 |
198 | } |
199 | } |
200 | switch_end: |
201 | if (e_fp) { |
a687059c |
202 | (void)fclose(e_fp); |
8d063cd8 |
203 | argc++,argv--; |
204 | argv[0] = e_tmpname; |
205 | } |
fe14fcc3 |
206 | |
207 | #ifdef MSDOS |
208 | #define PERLLIB_SEP ';' |
209 | #else |
210 | #define PERLLIB_SEP ':' |
211 | #endif |
212 | #ifndef TAINT /* Can't allow arbitrary PERLLIB in setuid script */ |
213 | { |
214 | char * s2 = getenv("PERLLIB"); |
215 | |
216 | if ( s2 ) { |
217 | /* Break at all separators */ |
218 | while ( *s2 ) { |
219 | /* First, skip any consecutive separators */ |
220 | while ( *s2 == PERLLIB_SEP ) { |
221 | /* Uncomment the next line for PATH semantics */ |
222 | /* (void)apush(stab_array(incstab),str_make(".",1)); */ |
223 | s2++; |
224 | } |
225 | if ( (s = index(s2,PERLLIB_SEP)) != Nullch ) { |
226 | (void)apush(stab_array(incstab),str_make(s2,(int)(s-s2))); |
227 | s2 = s+1; |
228 | } else { |
229 | (void)apush(stab_array(incstab),str_make(s2,0)); |
230 | break; |
231 | } |
232 | } |
233 | } |
234 | } |
235 | #endif /* TAINT */ |
236 | |
378cc40b |
237 | #ifndef PRIVLIB |
238 | #define PRIVLIB "/usr/local/lib/perl" |
239 | #endif |
a687059c |
240 | (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); |
33b78306 |
241 | (void)apush(stab_array(incstab),str_make(".",1)); |
8d063cd8 |
242 | |
243 | str_set(&str_no,No); |
244 | str_set(&str_yes,Yes); |
8d063cd8 |
245 | |
246 | /* open script */ |
247 | |
248 | if (argv[0] == Nullch) |
34de22dd |
249 | #ifdef MSDOS |
250 | { |
251 | if ( isatty(fileno(stdin)) ) |
252 | moreswitches("v"); |
253 | argv[0] = "-"; |
254 | } |
255 | #else |
8d063cd8 |
256 | argv[0] = "-"; |
34de22dd |
257 | #endif |
a687059c |
258 | if (dosearch && !index(argv[0], '/') && (s = getenv("PATH"))) { |
378cc40b |
259 | char *xfound = Nullch, *xfailed = Nullch; |
a687059c |
260 | int len; |
378cc40b |
261 | |
a687059c |
262 | bufend = s + strlen(s); |
378cc40b |
263 | while (*s) { |
33b78306 |
264 | #ifndef MSDOS |
a687059c |
265 | s = cpytill(tokenbuf,s,bufend,':',&len); |
33b78306 |
266 | #else |
267 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); |
268 | tokenbuf[len] = '\0'; |
269 | #endif |
378cc40b |
270 | if (*s) |
271 | s++; |
33b78306 |
272 | #ifndef MSDOS |
273 | if (len && tokenbuf[len-1] != '/') |
274 | #else |
275 | if (len && tokenbuf[len-1] != '\\') |
276 | #endif |
a687059c |
277 | (void)strcat(tokenbuf+len,"/"); |
278 | (void)strcat(tokenbuf+len,argv[0]); |
378cc40b |
279 | #ifdef DEBUGGING |
280 | if (debug & 1) |
281 | fprintf(stderr,"Looking for %s\n",tokenbuf); |
282 | #endif |
283 | if (stat(tokenbuf,&statbuf) < 0) /* not there? */ |
284 | continue; |
27e2fb84 |
285 | if (S_ISREG(statbuf.st_mode) |
286 | && cando(S_IRUSR,TRUE,&statbuf) && cando(S_IXUSR,TRUE,&statbuf)) { |
378cc40b |
287 | xfound = tokenbuf; /* bingo! */ |
288 | break; |
289 | } |
290 | if (!xfailed) |
291 | xfailed = savestr(tokenbuf); |
292 | } |
293 | if (!xfound) |
a687059c |
294 | fatal("Can't execute %s", xfailed ? xfailed : argv[0] ); |
378cc40b |
295 | if (xfailed) |
a687059c |
296 | Safefree(xfailed); |
378cc40b |
297 | argv[0] = savestr(xfound); |
298 | } |
a687059c |
299 | |
20188a90 |
300 | fdpid = anew(Nullstab); /* for remembering popen pids by fd */ |
27e2fb84 |
301 | pidstatus = hnew(COEFFSIZE);/* for remembering status of dead pids */ |
a687059c |
302 | |
33b78306 |
303 | origfilename = savestr(argv[0]); |
20188a90 |
304 | curcmd->c_filestab = fstab(origfilename); |
305 | if (strEQ(origfilename,"-")) |
8d063cd8 |
306 | argv[0] = ""; |
307 | if (preprocess) { |
378cc40b |
308 | str_cat(str,"-I"); |
309 | str_cat(str,PRIVLIB); |
a687059c |
310 | (void)sprintf(buf, "\ |
20188a90 |
311 | %ssed %s -e '/^[^#]/b' \ |
8d063cd8 |
312 | -e '/^#[ ]*include[ ]/b' \ |
313 | -e '/^#[ ]*define[ ]/b' \ |
314 | -e '/^#[ ]*if[ ]/b' \ |
315 | -e '/^#[ ]*ifdef[ ]/b' \ |
378cc40b |
316 | -e '/^#[ ]*ifndef[ ]/b' \ |
8d063cd8 |
317 | -e '/^#[ ]*else/b' \ |
318 | -e '/^#[ ]*endif/b' \ |
319 | -e 's/^#.*//' \ |
378cc40b |
320 | %s | %s -C %s %s", |
20188a90 |
321 | #ifdef MSDOS |
322 | "", |
323 | #else |
324 | "/bin/", |
325 | #endif |
33b78306 |
326 | (doextract ? "-e '1,/^#/d\n'" : ""), |
378cc40b |
327 | argv[0], CPPSTDIN, str_get(str), CPPMINUS); |
34de22dd |
328 | #ifdef DEBUGGING |
329 | if (debug & 64) { |
330 | fputs(buf,stderr); |
331 | fputs("\n",stderr); |
332 | } |
333 | #endif |
334 | doextract = FALSE; |
a687059c |
335 | #ifdef IAMSUID /* actually, this is caught earlier */ |
13281fa4 |
336 | if (euid != uid && !euid) /* if running suidperl */ |
fe14fcc3 |
337 | #ifdef HAS_SETEUID |
a687059c |
338 | (void)seteuid(uid); /* musn't stay setuid root */ |
339 | #else |
fe14fcc3 |
340 | #ifdef HAS_SETREUID |
a687059c |
341 | (void)setreuid(-1, uid); |
342 | #else |
343 | setuid(uid); |
344 | #endif |
13281fa4 |
345 | #endif |
a687059c |
346 | #endif /* IAMSUID */ |
347 | rsfp = mypopen(buf,"r"); |
8d063cd8 |
348 | } |
349 | else if (!*argv[0]) |
350 | rsfp = stdin; |
351 | else |
352 | rsfp = fopen(argv[0],"r"); |
13281fa4 |
353 | if (rsfp == Nullfp) { |
354 | #ifdef DOSUID |
a687059c |
355 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
20188a90 |
356 | if (euid && stat(stab_val(curcmd->c_filestab)->str_ptr,&statbuf) >= 0 && |
13281fa4 |
357 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
27e2fb84 |
358 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c |
359 | execv(buf, origargv); /* try again */ |
13281fa4 |
360 | fatal("Can't do setuid\n"); |
361 | } |
362 | #endif |
363 | #endif |
a687059c |
364 | fatal("Can't open perl script \"%s\": %s\n", |
20188a90 |
365 | stab_val(curcmd->c_filestab)->str_ptr, strerror(errno)); |
13281fa4 |
366 | } |
8d063cd8 |
367 | str_free(str); /* free -I directories */ |
fe14fcc3 |
368 | str = Nullstr; |
8d063cd8 |
369 | |
13281fa4 |
370 | /* do we need to emulate setuid on scripts? */ |
371 | |
372 | /* This code is for those BSD systems that have setuid #! scripts disabled |
373 | * in the kernel because of a security problem. Merely defining DOSUID |
374 | * in perl will not fix that problem, but if you have disabled setuid |
375 | * scripts in the kernel, this will attempt to emulate setuid and setgid |
376 | * on scripts that have those now-otherwise-useless bits set. The setuid |
27e2fb84 |
377 | * root version must be called suidperl or sperlN.NNN. If regular perl |
378 | * discovers that it has opened a setuid script, it calls suidperl with |
379 | * the same argv that it had. If suidperl finds that the script it has |
380 | * just opened is NOT setuid root, it sets the effective uid back to the |
381 | * uid. We don't just make perl setuid root because that loses the |
382 | * effective uid we had before invoking perl, if it was different from the |
383 | * uid. |
13281fa4 |
384 | * |
385 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must |
386 | * be defined in suidperl only. suidperl must be setuid root. The |
387 | * Configure script will set this up for you if you want it. |
a687059c |
388 | * |
389 | * There is also the possibility of have a script which is running |
390 | * set-id due to a C wrapper. We want to do the TAINT checks |
391 | * on these set-id scripts, but don't want to have the overhead of |
392 | * them in normal perl, and can't use suidperl because it will lose |
393 | * the effective uid info, so we have an additional non-setuid root |
27e2fb84 |
394 | * version called taintperl or tperlN.NNN that just does the TAINT checks. |
13281fa4 |
395 | */ |
a687059c |
396 | |
13281fa4 |
397 | #ifdef DOSUID |
398 | if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ |
20188a90 |
399 | fatal("Can't stat script \"%s\"",origfilename); |
13281fa4 |
400 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
401 | int len; |
402 | |
a687059c |
403 | #ifdef IAMSUID |
fe14fcc3 |
404 | #ifndef HAS_SETREUID |
a687059c |
405 | /* On this access check to make sure the directories are readable, |
406 | * there is actually a small window that the user could use to make |
407 | * filename point to an accessible directory. So there is a faint |
408 | * chance that someone could execute a setuid script down in a |
409 | * non-accessible directory. I don't know what to do about that. |
410 | * But I don't think it's too important. The manual lies when |
411 | * it says access() is useful in setuid programs. |
412 | */ |
20188a90 |
413 | if (access(stab_val(curcmd->c_filestab)->str_ptr,1)) /*double check*/ |
13281fa4 |
414 | fatal("Permission denied"); |
a687059c |
415 | #else |
416 | /* If we can swap euid and uid, then we can determine access rights |
417 | * with a simple stat of the file, and then compare device and |
418 | * inode to make sure we did stat() on the same file we opened. |
419 | * Then we just have to make sure he or she can execute it. |
420 | */ |
421 | { |
422 | struct stat tmpstatbuf; |
423 | |
424 | if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) |
425 | fatal("Can't swap uid and euid"); /* really paranoid */ |
20188a90 |
426 | if (stat(stab_val(curcmd->c_filestab)->str_ptr,&tmpstatbuf) < 0) |
427 | fatal("Permission denied"); /* testing full pathname here */ |
a687059c |
428 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
429 | tmpstatbuf.st_ino != statbuf.st_ino) { |
430 | (void)fclose(rsfp); |
431 | if (rsfp = mypopen("/bin/mail root","w")) { /* heh, heh */ |
432 | fprintf(rsfp, |
433 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ |
434 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", |
435 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, |
436 | statbuf.st_dev, statbuf.st_ino, |
20188a90 |
437 | stab_val(curcmd->c_filestab)->str_ptr, |
438 | statbuf.st_uid, statbuf.st_gid); |
a687059c |
439 | (void)mypclose(rsfp); |
440 | } |
441 | fatal("Permission denied\n"); |
442 | } |
443 | if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) |
444 | fatal("Can't reswap uid and euid"); |
27e2fb84 |
445 | if (!cando(S_IXUSR,FALSE,&statbuf)) /* can real uid exec? */ |
a687059c |
446 | fatal("Permission denied\n"); |
447 | } |
fe14fcc3 |
448 | #endif /* HAS_SETREUID */ |
a687059c |
449 | #endif /* IAMSUID */ |
450 | |
27e2fb84 |
451 | if (!S_ISREG(statbuf.st_mode)) |
13281fa4 |
452 | fatal("Permission denied"); |
27e2fb84 |
453 | if (statbuf.st_mode & S_IWOTH) |
a687059c |
454 | fatal("Setuid/gid script is writable by world"); |
13281fa4 |
455 | doswitches = FALSE; /* -s is insecure in suid */ |
33b78306 |
456 | curcmd->c_line++; |
13281fa4 |
457 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
458 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ |
459 | fatal("No #! line"); |
663a0e37 |
460 | s = tokenbuf+2; |
461 | if (*s == ' ') s++; |
462 | while (!isspace(*s)) s++; |
27e2fb84 |
463 | if (strnNE(s-4,"perl",4) && strnNE(s-9,"perl",4)) /* sanity check */ |
13281fa4 |
464 | fatal("Not a perl script"); |
a687059c |
465 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 |
466 | /* |
467 | * #! arg must be what we saw above. They can invoke it by |
468 | * mentioning suidperl explicitly, but they may not add any strange |
469 | * arguments beyond what #! says if they do invoke suidperl that way. |
470 | */ |
471 | len = strlen(validarg); |
472 | if (strEQ(validarg," PHOOEY ") || |
473 | strnNE(s,validarg,len) || !isspace(s[len])) |
a687059c |
474 | fatal("Args must match #! line"); |
475 | |
476 | #ifndef IAMSUID |
477 | if (euid != uid && (statbuf.st_mode & S_ISUID) && |
478 | euid == statbuf.st_uid) |
479 | if (!do_undump) |
480 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
481 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
482 | #endif /* IAMSUID */ |
13281fa4 |
483 | |
484 | if (euid) { /* oops, we're not the setuid root perl */ |
a687059c |
485 | (void)fclose(rsfp); |
13281fa4 |
486 | #ifndef IAMSUID |
27e2fb84 |
487 | (void)sprintf(buf, "%s/sperl%s", BIN, patchlevel); |
a687059c |
488 | execv(buf, origargv); /* try again */ |
13281fa4 |
489 | #endif |
490 | fatal("Can't do setuid\n"); |
491 | } |
492 | |
ffed7fef |
493 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) |
fe14fcc3 |
494 | #ifdef HAS_SETEGID |
a687059c |
495 | (void)setegid(statbuf.st_gid); |
496 | #else |
fe14fcc3 |
497 | #ifdef HAS_SETREGID |
a687059c |
498 | (void)setregid((GIDTYPE)-1,statbuf.st_gid); |
499 | #else |
500 | setgid(statbuf.st_gid); |
501 | #endif |
502 | #endif |
503 | if (statbuf.st_mode & S_ISUID) { |
504 | if (statbuf.st_uid != euid) |
fe14fcc3 |
505 | #ifdef HAS_SETEUID |
a687059c |
506 | (void)seteuid(statbuf.st_uid); /* all that for this */ |
507 | #else |
fe14fcc3 |
508 | #ifdef HAS_SETREUID |
a687059c |
509 | (void)setreuid((UIDTYPE)-1,statbuf.st_uid); |
510 | #else |
511 | setuid(statbuf.st_uid); |
512 | #endif |
513 | #endif |
514 | } |
515 | else if (uid) /* oops, mustn't run as root */ |
fe14fcc3 |
516 | #ifdef HAS_SETEUID |
a687059c |
517 | (void)seteuid((UIDTYPE)uid); |
518 | #else |
fe14fcc3 |
519 | #ifdef HAS_SETREUID |
a687059c |
520 | (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); |
521 | #else |
522 | setuid((UIDTYPE)uid); |
523 | #endif |
524 | #endif |
ffed7fef |
525 | uid = (int)getuid(); |
13281fa4 |
526 | euid = (int)geteuid(); |
ffed7fef |
527 | gid = (int)getgid(); |
528 | egid = (int)getegid(); |
27e2fb84 |
529 | if (!cando(S_IXUSR,TRUE,&statbuf)) |
13281fa4 |
530 | fatal("Permission denied\n"); /* they can't do this */ |
531 | } |
532 | #ifdef IAMSUID |
533 | else if (preprocess) |
534 | fatal("-P not allowed for setuid/setgid script\n"); |
535 | else |
536 | fatal("Script is not setuid/setgid in suidperl\n"); |
a687059c |
537 | #else |
538 | #ifndef TAINT /* we aren't taintperl or suidperl */ |
539 | /* script has a wrapper--can't run suidperl or we lose euid */ |
540 | else if (euid != uid || egid != gid) { |
541 | (void)fclose(rsfp); |
27e2fb84 |
542 | (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); |
a687059c |
543 | execv(buf, origargv); /* try again */ |
544 | fatal("Can't run setuid script with taint checks"); |
545 | } |
546 | #endif /* TAINT */ |
13281fa4 |
547 | #endif /* IAMSUID */ |
a687059c |
548 | #else /* !DOSUID */ |
549 | #ifndef TAINT /* we aren't taintperl or suidperl */ |
550 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ |
551 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW |
552 | fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ |
553 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) |
554 | || |
555 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) |
556 | ) |
557 | if (!do_undump) |
558 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ |
559 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); |
560 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ |
561 | /* not set-id, must be wrapped */ |
562 | (void)fclose(rsfp); |
27e2fb84 |
563 | (void)sprintf(buf, "%s/tperl%s", BIN, patchlevel); |
a687059c |
564 | execv(buf, origargv); /* try again */ |
565 | fatal("Can't run setuid script with taint checks"); |
566 | } |
567 | #endif /* TAINT */ |
13281fa4 |
568 | #endif /* DOSUID */ |
569 | |
33b78306 |
570 | #if !defined(IAMSUID) && !defined(TAINT) |
571 | |
572 | /* skip forward in input to the real script? */ |
573 | |
574 | while (doextract) { |
575 | if ((s = str_gets(linestr, rsfp, 0)) == Nullch) |
576 | fatal("No Perl script found in input\n"); |
577 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { |
578 | ungetc('\n',rsfp); /* to keep line count right */ |
579 | doextract = FALSE; |
580 | if (s = instr(s,"perl -")) { |
581 | s += 6; |
582 | while (s = moreswitches(s)) ; |
583 | } |
584 | if (cddir && chdir(cddir) < 0) |
585 | fatal("Can't chdir to %s",cddir); |
586 | } |
587 | } |
588 | #endif /* !defined(IAMSUID) && !defined(TAINT) */ |
589 | |
8d063cd8 |
590 | defstab = stabent("_",TRUE); |
591 | |
a687059c |
592 | if (perldb) { |
593 | debstash = hnew(0); |
594 | stab_xhash(stabent("_DB",TRUE)) = debstash; |
595 | curstash = debstash; |
20188a90 |
596 | dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE)))); |
a687059c |
597 | tmpstab->str_pok |= SP_MULTI; |
20188a90 |
598 | dbargs->ary_flags = 0; |
a687059c |
599 | subname = str_make("main",4); |
600 | DBstab = stabent("DB",TRUE); |
601 | DBstab->str_pok |= SP_MULTI; |
20188a90 |
602 | DBline = stabent("dbline",TRUE); |
603 | DBline->str_pok |= SP_MULTI; |
a687059c |
604 | DBsub = hadd(tmpstab = stabent("sub",TRUE)); |
605 | tmpstab->str_pok |= SP_MULTI; |
606 | DBsingle = stab_val((tmpstab = stabent("single",TRUE))); |
607 | tmpstab->str_pok |= SP_MULTI; |
20188a90 |
608 | DBtrace = stab_val((tmpstab = stabent("trace",TRUE))); |
609 | tmpstab->str_pok |= SP_MULTI; |
610 | DBsignal = stab_val((tmpstab = stabent("signal",TRUE))); |
611 | tmpstab->str_pok |= SP_MULTI; |
a687059c |
612 | curstash = defstash; |
613 | } |
614 | |
8d063cd8 |
615 | /* init tokener */ |
616 | |
a687059c |
617 | bufend = bufptr = str_get(linestr); |
618 | |
619 | savestack = anew(Nullstab); /* for saving non-local values */ |
620 | stack = anew(Nullstab); /* for saving non-local values */ |
621 | stack->ary_flags = 0; /* not a real array */ |
6eb13c3b |
622 | afill(stack,63); afill(stack,-1); /* preextend stack */ |
623 | afill(savestack,63); afill(savestack,-1); |
8d063cd8 |
624 | |
a687059c |
625 | /* now parse the script */ |
8d063cd8 |
626 | |
a687059c |
627 | error_count = 0; |
33b78306 |
628 | if (yyparse() || error_count) { |
629 | if (minus_c) |
630 | fatal("%s had compilation errors.\n", origfilename); |
631 | else { |
632 | fatal("Execution of %s aborted due to compilation errors.\n", |
633 | origfilename); |
634 | } |
635 | } |
8d063cd8 |
636 | |
a687059c |
637 | New(50,loop_stack,128,struct loop); |
ae986130 |
638 | #ifdef DEBUGGING |
639 | if (debug) { |
640 | New(51,debname,128,char); |
641 | New(52,debdelim,128,char); |
642 | } |
643 | #endif |
a687059c |
644 | curstash = defstash; |
378cc40b |
645 | |
646 | preprocess = FALSE; |
8d063cd8 |
647 | if (e_fp) { |
648 | e_fp = Nullfp; |
a687059c |
649 | (void)UNLINK(e_tmpname); |
650 | } |
651 | |
652 | /* initialize everything that won't change if we undump */ |
653 | |
654 | if (sigstab = stabent("SIG",allstabs)) { |
655 | sigstab->str_pok |= SP_MULTI; |
656 | (void)hadd(sigstab); |
657 | } |
658 | |
fe14fcc3 |
659 | magicalize("!#?^~=-%.+&*()<>,\\/[|`':\004\t\024\027"); |
33b78306 |
660 | userinit(); /* in case linked C routines want magical variables */ |
a687059c |
661 | |
662 | amperstab = stabent("&",allstabs); |
663 | leftstab = stabent("`",allstabs); |
664 | rightstab = stabent("'",allstabs); |
665 | sawampersand = (amperstab || leftstab || rightstab); |
666 | if (tmpstab = stabent(":",allstabs)) |
667 | str_set(STAB_STR(tmpstab),chopset); |
20188a90 |
668 | if (tmpstab = stabent("\024",allstabs)) |
669 | time(&basetime); |
a687059c |
670 | |
671 | /* these aren't necessarily magical */ |
672 | if (tmpstab = stabent(";",allstabs)) |
673 | str_set(STAB_STR(tmpstab),"\034"); |
33b78306 |
674 | if (tmpstab = stabent("]",allstabs)) { |
675 | str = STAB_STR(tmpstab); |
676 | str_set(str,rcsid); |
27e2fb84 |
677 | str->str_u.str_nval = atof(patchlevel); |
33b78306 |
678 | str->str_nok = 1; |
679 | } |
a687059c |
680 | str_nset(stab_val(stabent("\"", TRUE)), " ", 1); |
681 | |
682 | stdinstab = stabent("STDIN",TRUE); |
683 | stdinstab->str_pok |= SP_MULTI; |
684 | stab_io(stdinstab) = stio_new(); |
685 | stab_io(stdinstab)->ifp = stdin; |
686 | tmpstab = stabent("stdin",TRUE); |
687 | stab_io(tmpstab) = stab_io(stdinstab); |
688 | tmpstab->str_pok |= SP_MULTI; |
689 | |
690 | tmpstab = stabent("STDOUT",TRUE); |
691 | tmpstab->str_pok |= SP_MULTI; |
692 | stab_io(tmpstab) = stio_new(); |
693 | stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; |
694 | defoutstab = tmpstab; |
695 | tmpstab = stabent("stdout",TRUE); |
696 | stab_io(tmpstab) = stab_io(defoutstab); |
697 | tmpstab->str_pok |= SP_MULTI; |
698 | |
699 | curoutstab = stabent("STDERR",TRUE); |
700 | curoutstab->str_pok |= SP_MULTI; |
701 | stab_io(curoutstab) = stio_new(); |
702 | stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; |
703 | tmpstab = stabent("stderr",TRUE); |
704 | stab_io(tmpstab) = stab_io(curoutstab); |
705 | tmpstab->str_pok |= SP_MULTI; |
706 | curoutstab = defoutstab; /* switch back to STDOUT */ |
707 | |
708 | statname = Str_new(66,0); /* last filename we did stat on */ |
709 | |
fe14fcc3 |
710 | /* now that script is parsed, we can modify record separator */ |
711 | |
712 | rs = nrs; |
713 | rslen = nrslen; |
714 | rschar = nrschar; |
715 | str_nset(stab_val(stabent("/", TRUE)), rs, rslen); |
716 | |
a687059c |
717 | if (do_undump) |
34de22dd |
718 | my_unexec(); |
a687059c |
719 | |
720 | just_doit: /* come here if running an undumped a.out */ |
8d063cd8 |
721 | argc--,argv++; /* skip name of script */ |
722 | if (doswitches) { |
723 | for (; argc > 0 && **argv == '-'; argc--,argv++) { |
724 | if (argv[0][1] == '-') { |
725 | argc--,argv++; |
726 | break; |
727 | } |
fe14fcc3 |
728 | if (s = index(argv[0], '=')) { |
729 | *s++ = '\0'; |
730 | str_set(stab_val(stabent(argv[0]+1,TRUE)),s); |
731 | } |
732 | else |
733 | str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); |
8d063cd8 |
734 | } |
735 | } |
a687059c |
736 | #ifdef TAINT |
737 | tainted = 1; |
738 | #endif |
fe14fcc3 |
739 | if (tmpstab = stabent("0",allstabs)) { |
34de22dd |
740 | str_set(stab_val(tmpstab),origfilename); |
fe14fcc3 |
741 | magicname("0", Nullch, 0); |
742 | } |
743 | if (tmpstab = stabent("\020",allstabs)) |
744 | str_set(stab_val(tmpstab),origargv[0]); |
a559c259 |
745 | if (argvstab = stabent("ARGV",allstabs)) { |
a687059c |
746 | argvstab->str_pok |= SP_MULTI; |
747 | (void)aadd(argvstab); |
33b78306 |
748 | aclear(stab_array(argvstab)); |
8d063cd8 |
749 | for (; argc > 0; argc--,argv++) { |
a687059c |
750 | (void)apush(stab_array(argvstab),str_make(argv[0],0)); |
8d063cd8 |
751 | } |
752 | } |
a687059c |
753 | #ifdef TAINT |
754 | (void) stabent("ENV",TRUE); /* must test PATH and IFS */ |
755 | #endif |
a559c259 |
756 | if (envstab = stabent("ENV",allstabs)) { |
a687059c |
757 | envstab->str_pok |= SP_MULTI; |
758 | (void)hadd(envstab); |
20188a90 |
759 | hclear(stab_hash(envstab), FALSE); |
33b78306 |
760 | if (env != environ) |
761 | environ[0] = Nullch; |
8d063cd8 |
762 | for (; *env; env++) { |
763 | if (!(s = index(*env,'='))) |
764 | continue; |
765 | *s++ = '\0'; |
a687059c |
766 | str = str_make(s--,0); |
767 | str_magic(str, envstab, 'E', *env, s - *env); |
768 | (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); |
769 | *s = '='; |
8d063cd8 |
770 | } |
771 | } |
a687059c |
772 | #ifdef TAINT |
773 | tainted = 0; |
774 | #endif |
378cc40b |
775 | if (tmpstab = stabent("$",allstabs)) |
8d063cd8 |
776 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
777 | |
20188a90 |
778 | if (dowarn) { |
779 | stab_check('A','Z'); |
780 | stab_check('a','z'); |
781 | } |
782 | |
a687059c |
783 | if (setjmp(top_env)) /* sets goto_targ on longjump */ |
ac58e20f |
784 | loop_ptr = -1; /* start label stack again */ |
8d063cd8 |
785 | |
786 | #ifdef DEBUGGING |
787 | if (debug & 1024) |
a687059c |
788 | dump_all(); |
8d063cd8 |
789 | if (debug) |
790 | fprintf(stderr,"\nEXECUTING...\n\n"); |
791 | #endif |
792 | |
33b78306 |
793 | if (minus_c) { |
794 | fprintf(stderr,"%s syntax OK\n", origfilename); |
795 | exit(0); |
796 | } |
797 | |
8d063cd8 |
798 | /* do it */ |
799 | |
a687059c |
800 | (void) cmd_exec(main_root,G_SCALAR,-1); |
8d063cd8 |
801 | |
802 | if (goto_targ) |
378cc40b |
803 | fatal("Can't find label \"%s\"--aborting",goto_targ); |
8d063cd8 |
804 | exit(0); |
378cc40b |
805 | /* NOTREACHED */ |
8d063cd8 |
806 | } |
807 | |
fe14fcc3 |
808 | void |
8d063cd8 |
809 | magicalize(list) |
810 | register char *list; |
811 | { |
8d063cd8 |
812 | char sym[2]; |
813 | |
814 | sym[1] = '\0'; |
33b78306 |
815 | while (*sym = *list++) |
816 | magicname(sym, Nullch, 0); |
817 | } |
818 | |
fe14fcc3 |
819 | void |
33b78306 |
820 | magicname(sym,name,namlen) |
821 | char *sym; |
822 | char *name; |
823 | int namlen; |
824 | { |
825 | register STAB *stab; |
826 | |
827 | if (stab = stabent(sym,allstabs)) { |
828 | stab_flags(stab) = SF_VMAGIC; |
829 | str_magic(stab_val(stab), stab, 0, name, namlen); |
378cc40b |
830 | } |
8d063cd8 |
831 | } |
832 | |
fe14fcc3 |
833 | /* this routine is in perl.c by virtue of being sort of an alternate main() */ |
8d063cd8 |
834 | |
a687059c |
835 | int |
836 | do_eval(str,optype,stash,gimme,arglast) |
837 | STR *str; |
838 | int optype; |
839 | HASH *stash; |
840 | int gimme; |
841 | int *arglast; |
8d063cd8 |
842 | { |
a687059c |
843 | STR **st = stack->ary_array; |
844 | int retval; |
fe14fcc3 |
845 | CMD *myroot = Nullcmd; |
a687059c |
846 | ARRAY *ar; |
847 | int i; |
33b78306 |
848 | CMD * VOLATILE oldcurcmd = curcmd; |
ac58e20f |
849 | VOLATILE int oldtmps_base = tmps_base; |
850 | VOLATILE int oldsave = savestack->ary_fill; |
20188a90 |
851 | VOLATILE int oldperldb = perldb; |
ac58e20f |
852 | SPAT * VOLATILE oldspat = curspat; |
fe14fcc3 |
853 | SPAT * VOLATILE oldlspat = lastspat; |
a687059c |
854 | static char *last_eval = Nullch; |
855 | static CMD *last_root = Nullcmd; |
663a0e37 |
856 | VOLATILE int sp = arglast[0]; |
33b78306 |
857 | char *specfilename; |
20188a90 |
858 | char *tmpfilename; |
fe14fcc3 |
859 | int parsing = 1; |
8d063cd8 |
860 | |
a687059c |
861 | tmps_base = tmps_max; |
862 | if (curstash != stash) { |
863 | (void)savehptr(&curstash); |
864 | curstash = stash; |
8d063cd8 |
865 | } |
a687059c |
866 | str_set(stab_val(stabent("@",TRUE)),""); |
20188a90 |
867 | if (curcmd->c_line == 0) /* don't debug debugger... */ |
868 | perldb = FALSE; |
33b78306 |
869 | curcmd = &compiling; |
870 | if (optype == O_EVAL) { /* normal eval */ |
20188a90 |
871 | curcmd->c_filestab = fstab("(eval)"); |
33b78306 |
872 | curcmd->c_line = 1; |
a687059c |
873 | str_sset(linestr,str); |
874 | str_cat(linestr,";"); /* be kind to them */ |
8d063cd8 |
875 | } |
a687059c |
876 | else { |
0f85fab0 |
877 | if (last_root && !in_eval) { |
a687059c |
878 | Safefree(last_eval); |
fe14fcc3 |
879 | last_eval = Nullch; |
a687059c |
880 | cmd_free(last_root); |
881 | last_root = Nullcmd; |
8d063cd8 |
882 | } |
33b78306 |
883 | specfilename = str_get(str); |
a687059c |
884 | str_set(linestr,""); |
20188a90 |
885 | if (optype == O_REQUIRE && &str_undef != |
33b78306 |
886 | hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { |
20188a90 |
887 | curcmd = oldcurcmd; |
33b78306 |
888 | tmps_base = oldtmps_base; |
889 | st[++sp] = &str_yes; |
20188a90 |
890 | perldb = oldperldb; |
33b78306 |
891 | return sp; |
892 | } |
20188a90 |
893 | tmpfilename = savestr(specfilename); |
894 | if (index("/.", *tmpfilename)) |
895 | rsfp = fopen(tmpfilename,"r"); |
33b78306 |
896 | else { |
897 | ar = stab_array(incstab); |
a687059c |
898 | for (i = 0; i <= ar->ary_fill; i++) { |
20188a90 |
899 | (void)sprintf(buf, "%s/%s", |
900 | str_get(afetch(ar,i,TRUE)), specfilename); |
a687059c |
901 | rsfp = fopen(buf,"r"); |
902 | if (rsfp) { |
33b78306 |
903 | char *s = buf; |
904 | |
905 | if (*s == '.' && s[1] == '/') |
906 | s += 2; |
20188a90 |
907 | Safefree(tmpfilename); |
908 | tmpfilename = savestr(s); |
8d063cd8 |
909 | break; |
910 | } |
378cc40b |
911 | } |
912 | } |
20188a90 |
913 | curcmd->c_filestab = fstab(tmpfilename); |
914 | Safefree(tmpfilename); |
fe14fcc3 |
915 | tmpfilename = Nullch; |
a687059c |
916 | if (!rsfp) { |
20188a90 |
917 | curcmd = oldcurcmd; |
a687059c |
918 | tmps_base = oldtmps_base; |
33b78306 |
919 | if (optype == O_REQUIRE) { |
920 | sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); |
921 | if (instr(tokenbuf,".h ")) |
922 | strcat(tokenbuf," (change .h to .ph maybe?)"); |
923 | if (instr(tokenbuf,".ph ")) |
6eb13c3b |
924 | strcat(tokenbuf," (did you run h2ph?)"); |
33b78306 |
925 | fatal("%s",tokenbuf); |
926 | } |
a687059c |
927 | if (gimme != G_ARRAY) |
928 | st[++sp] = &str_undef; |
20188a90 |
929 | perldb = oldperldb; |
a687059c |
930 | return sp; |
8d063cd8 |
931 | } |
33b78306 |
932 | curcmd->c_line = 0; |
8d063cd8 |
933 | } |
a687059c |
934 | in_eval++; |
935 | oldoldbufptr = oldbufptr = bufptr = str_get(linestr); |
936 | bufend = bufptr + linestr->str_cur; |
ac58e20f |
937 | if (++loop_ptr >= loop_max) { |
938 | loop_max += 128; |
939 | Renew(loop_stack, loop_max, struct loop); |
940 | } |
941 | loop_stack[loop_ptr].loop_label = "_EVAL_"; |
942 | loop_stack[loop_ptr].loop_sp = sp; |
943 | #ifdef DEBUGGING |
944 | if (debug & 4) { |
945 | deb("(Pushing label #%d _EVAL_)\n", loop_ptr); |
946 | } |
947 | #endif |
fe14fcc3 |
948 | eval_root = Nullcmd; |
ac58e20f |
949 | if (setjmp(loop_stack[loop_ptr].loop_env)) { |
a687059c |
950 | retval = 1; |
8d063cd8 |
951 | } |
a687059c |
952 | else { |
953 | error_count = 0; |
20188a90 |
954 | if (rsfp) { |
a687059c |
955 | retval = yyparse(); |
20188a90 |
956 | retval |= error_count; |
957 | } |
a687059c |
958 | else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){ |
959 | retval = 0; |
960 | eval_root = last_root; /* no point in reparsing */ |
961 | } |
962 | else if (in_eval == 1) { |
963 | if (last_root) { |
964 | Safefree(last_eval); |
fe14fcc3 |
965 | last_eval = Nullch; |
a687059c |
966 | cmd_free(last_root); |
8d063cd8 |
967 | } |
a687059c |
968 | last_root = Nullcmd; |
fe14fcc3 |
969 | last_eval = savestr(bufptr); |
a687059c |
970 | retval = yyparse(); |
20188a90 |
971 | retval |= error_count; |
a687059c |
972 | if (!retval) |
973 | last_root = eval_root; |
fe14fcc3 |
974 | if (!last_root) { |
975 | Safefree(last_eval); |
976 | last_eval = Nullch; |
977 | } |
8d063cd8 |
978 | } |
a687059c |
979 | else |
980 | retval = yyparse(); |
8d063cd8 |
981 | } |
a687059c |
982 | myroot = eval_root; /* in case cmd_exec does another eval! */ |
20188a90 |
983 | |
984 | if (retval) { |
ac58e20f |
985 | st = stack->ary_array; |
986 | sp = arglast[0]; |
987 | if (gimme != G_ARRAY) |
988 | st[++sp] = &str_undef; |
fe14fcc3 |
989 | if (parsing) { |
990 | #ifndef MANGLEDPARSE |
991 | #ifdef DEBUGGING |
992 | if (debug & 128) |
993 | fprintf(stderr,"Freeing eval_root %lx\n",(long)eval_root); |
994 | #endif |
995 | cmd_free(eval_root); |
996 | #endif |
997 | if (eval_root == last_root) |
998 | last_root = Nullcmd; |
999 | eval_root = myroot = Nullcmd; |
1000 | } |
a687059c |
1001 | if (rsfp) { |
1002 | fclose(rsfp); |
1003 | rsfp = 0; |
1004 | } |
8d063cd8 |
1005 | } |
8d063cd8 |
1006 | else { |
fe14fcc3 |
1007 | parsing = 0; |
a687059c |
1008 | sp = cmd_exec(eval_root,gimme,sp); |
1009 | st = stack->ary_array; |
1010 | for (i = arglast[0] + 1; i <= sp; i++) |
fe14fcc3 |
1011 | st[i] = str_mortal(st[i]); |
a687059c |
1012 | /* if we don't save result, free zaps it */ |
1013 | if (in_eval != 1 && myroot != last_root) |
1014 | cmd_free(myroot); |
a559c259 |
1015 | } |
20188a90 |
1016 | |
1017 | perldb = oldperldb; |
a559c259 |
1018 | in_eval--; |
ac58e20f |
1019 | #ifdef DEBUGGING |
20188a90 |
1020 | if (debug & 4) { |
1021 | char *tmps = loop_stack[loop_ptr].loop_label; |
1022 | deb("(Popping label #%d %s)\n",loop_ptr, |
1023 | tmps ? tmps : "" ); |
1024 | } |
ac58e20f |
1025 | #endif |
1026 | loop_ptr--; |
378cc40b |
1027 | tmps_base = oldtmps_base; |
a687059c |
1028 | curspat = oldspat; |
fe14fcc3 |
1029 | lastspat = oldlspat; |
378cc40b |
1030 | if (savestack->ary_fill > oldsave) /* let them use local() */ |
1031 | restorelist(oldsave); |
20188a90 |
1032 | |
1033 | if (optype != O_EVAL) { |
1034 | if (retval) { |
1035 | if (optype == O_REQUIRE) |
1036 | fatal("%s", str_get(stab_val(stabent("@",TRUE)))); |
1037 | } |
1038 | else { |
1039 | curcmd = oldcurcmd; |
1040 | if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { |
1041 | (void)hstore(stab_hash(incstab), specfilename, |
1042 | strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)), |
1043 | 0 ); |
1044 | } |
1045 | else if (optype == O_REQUIRE) |
1046 | fatal("%s did not return a true value", specfilename); |
1047 | } |
1048 | } |
1049 | curcmd = oldcurcmd; |
a687059c |
1050 | return sp; |
378cc40b |
1051 | } |
33b78306 |
1052 | |
1053 | /* This routine handles any switches that can be given during run */ |
1054 | |
1055 | static char * |
1056 | moreswitches(s) |
1057 | char *s; |
1058 | { |
fe14fcc3 |
1059 | int numlen; |
1060 | |
33b78306 |
1061 | reswitch: |
1062 | switch (*s) { |
27e2fb84 |
1063 | case '0': |
fe14fcc3 |
1064 | nrschar = scanoct(s, 4, &numlen); |
1065 | nrs = nsavestr("\n",1); |
1066 | *nrs = nrschar; |
1067 | if (nrschar > 0377) { |
1068 | nrslen = 0; |
1069 | nrs = ""; |
27e2fb84 |
1070 | } |
fe14fcc3 |
1071 | else if (!nrschar && numlen >= 2) { |
1072 | nrslen = 2; |
1073 | nrs = "\n\n"; |
1074 | nrschar = '\n'; |
1075 | } |
1076 | return s + numlen; |
33b78306 |
1077 | case 'a': |
1078 | minus_a = TRUE; |
1079 | s++; |
1080 | return s; |
1081 | case 'c': |
1082 | minus_c = TRUE; |
1083 | s++; |
1084 | return s; |
1085 | case 'd': |
1086 | #ifdef TAINT |
1087 | if (euid != uid || egid != gid) |
1088 | fatal("No -d allowed in setuid scripts"); |
1089 | #endif |
1090 | perldb = TRUE; |
1091 | s++; |
1092 | return s; |
1093 | case 'D': |
1094 | #ifdef DEBUGGING |
1095 | #ifdef TAINT |
1096 | if (euid != uid || egid != gid) |
1097 | fatal("No -D allowed in setuid scripts"); |
1098 | #endif |
fe14fcc3 |
1099 | debug = atoi(s+1) | 32768; |
33b78306 |
1100 | #else |
1101 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); |
1102 | #endif |
fe14fcc3 |
1103 | for (s++; isdigit(*s); s++) ; |
1104 | return s; |
33b78306 |
1105 | case 'i': |
1106 | inplace = savestr(s+1); |
1107 | for (s = inplace; *s && !isspace(*s); s++) ; |
1108 | *s = '\0'; |
33b78306 |
1109 | break; |
1110 | case 'I': |
1111 | #ifdef TAINT |
1112 | if (euid != uid || egid != gid) |
1113 | fatal("No -I allowed in setuid scripts"); |
1114 | #endif |
1115 | if (*++s) { |
1116 | (void)apush(stab_array(incstab),str_make(s,0)); |
1117 | } |
1118 | else |
1119 | fatal("No space allowed after -I"); |
1120 | break; |
fe14fcc3 |
1121 | case 'l': |
1122 | minus_l = TRUE; |
1123 | s++; |
1124 | if (isdigit(*s)) { |
1125 | ors = savestr("\n"); |
1126 | orslen = 1; |
1127 | *ors = scanoct(s, 3 + (*s == '0'), &numlen); |
1128 | s += numlen; |
1129 | } |
1130 | else { |
1131 | ors = nsavestr(nrs,nrslen); |
1132 | orslen = nrslen; |
1133 | } |
1134 | return s; |
33b78306 |
1135 | case 'n': |
1136 | minus_n = TRUE; |
1137 | s++; |
1138 | return s; |
1139 | case 'p': |
1140 | minus_p = TRUE; |
1141 | s++; |
1142 | return s; |
1143 | case 'u': |
1144 | do_undump = TRUE; |
1145 | s++; |
1146 | return s; |
1147 | case 'U': |
1148 | unsafe = TRUE; |
1149 | s++; |
1150 | return s; |
1151 | case 'v': |
fe14fcc3 |
1152 | fputs("\nThis is perl, version 4.0\n\n",stdout); |
33b78306 |
1153 | fputs(rcsid,stdout); |
fe14fcc3 |
1154 | fputs("\nCopyright (c) 1989, 1990, 1991, Larry Wall\n",stdout); |
33b78306 |
1155 | #ifdef MSDOS |
1156 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", |
1157 | stdout); |
20188a90 |
1158 | #ifdef OS2 |
1159 | fputs("OS/2 port Copyright (c) 1990, Raymond Chen, Kai Uwe Rommel\n", |
1160 | stdout); |
1161 | #endif |
33b78306 |
1162 | #endif |
1163 | fputs("\n\ |
1164 | Perl may be copied only under the terms of the GNU General Public License,\n\ |
fe14fcc3 |
1165 | a copy of which can be found with the Perl 4.0 distribution kit.\n",stdout); |
20188a90 |
1166 | #ifdef MSDOS |
1167 | usage(origargv[0]); |
1168 | #endif |
33b78306 |
1169 | exit(0); |
1170 | case 'w': |
1171 | dowarn = TRUE; |
1172 | s++; |
1173 | return s; |
1174 | case ' ': |
1175 | case '\n': |
1176 | case '\t': |
1177 | break; |
1178 | default: |
1179 | fatal("Switch meaningless after -x: -%s",s); |
1180 | } |
1181 | return Nullch; |
1182 | } |
34de22dd |
1183 | |
1184 | /* compliments of Tom Christiansen */ |
1185 | |
1186 | /* unexec() can be found in the Gnu emacs distribution */ |
1187 | |
1188 | my_unexec() |
1189 | { |
1190 | #ifdef UNEXEC |
1191 | int status; |
1192 | extern int etext; |
1193 | static char dumpname[BUFSIZ]; |
1194 | static char perlpath[256]; |
1195 | |
1196 | sprintf (dumpname, "%s.perldump", origfilename); |
1197 | sprintf (perlpath, "%s/perl", BIN); |
1198 | |
1199 | status = unexec(dumpname, perlpath, &etext, sbrk(0), 0); |
1200 | if (status) |
1201 | fprintf(stderr, "unexec of %s into %s failed!\n", perlpath, dumpname); |
1202 | exit(status); |
1203 | #else |
fe14fcc3 |
1204 | # ifndef SIGABRT |
1205 | # define SIGABRT SIGILL |
1206 | # endif |
1207 | # ifndef SIGILL |
1208 | # define SIGILL 6 /* blech */ |
1209 | # endif |
1210 | kill(getpid(),SIGABRT); /* for use with undump */ |
34de22dd |
1211 | #endif |
1212 | } |
1213 | |