Commit | Line | Data |
---|---|---|
34de22dd | 1 | char rcsid[] = "$Header: perly.c,v 3.0.1.9 90/11/10 01:53:26 lwall Locked $\nPatch level: ###\n"; |
8d063cd8 | 2 | /* |
a687059c LW |
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 | * | |
8d063cd8 | 8 | * $Log: perly.c,v $ |
34de22dd LW |
9 | * Revision 3.0.1.9 90/11/10 01:53:26 lwall |
10 | * patch38: random cleanup | |
11 | * patch38: more msdos/os2 upgrades | |
12 | * patch38: references to $0 produced core dumps | |
13 | * patch38: added hooks for unexec() | |
14 | * | |
20188a90 LW |
15 | * Revision 3.0.1.8 90/10/16 10:14:20 lwall |
16 | * patch29: *foo now prints as *package'foo | |
17 | * patch29: added waitpid | |
18 | * patch29: the debugger now understands packages and evals | |
19 | * patch29: added -M, -A and -C | |
20 | * patch29: -w sometimes printed spurious warnings about ARGV and ENV | |
21 | * patch29: require "./foo" didn't work right | |
22 | * patch29: require error messages referred to wrong file | |
23 | * | |
6eb13c3b LW |
24 | * Revision 3.0.1.7 90/08/13 22:22:22 lwall |
25 | * patch28: defined(@array) and defined(%array) didn't work right | |
26 | * | |
33b78306 LW |
27 | * Revision 3.0.1.6 90/08/09 04:55:50 lwall |
28 | * patch19: added -x switch to extract script from input trash | |
29 | * patch19: Added -c switch to do compilation only | |
30 | * patch19: added numeric interpretation of $] | |
31 | * patch19: added require operator | |
32 | * patch19: $0, %ENV, @ARGV were wrong in dumped script | |
33 | * patch19: . is now explicitly in @INC (and last) | |
34 | * | |
0f85fab0 LW |
35 | * Revision 3.0.1.5 90/03/27 16:20:57 lwall |
36 | * patch16: MSDOS support | |
37 | * patch16: do FILE inside eval blows up | |
38 | * | |
ac58e20f LW |
39 | * Revision 3.0.1.4 90/02/28 18:06:41 lwall |
40 | * patch9: perl can now start up other interpreters scripts | |
41 | * patch9: nested evals clobbered their longjmp environment | |
42 | * patch9: eval could mistakenly return undef in array context | |
43 | * | |
663a0e37 LW |
44 | * Revision 3.0.1.3 89/12/21 20:15:41 lwall |
45 | * patch7: ANSI strerror() is now supported | |
46 | * patch7: errno may now be a macro with an lvalue | |
47 | * patch7: allowed setuid scripts to have a space after #! | |
48 | * | |
ffed7fef LW |
49 | * Revision 3.0.1.2 89/11/17 15:34:42 lwall |
50 | * patch5: fixed possible confusion about current effective gid | |
51 | * | |
ae986130 LW |
52 | * Revision 3.0.1.1 89/11/11 04:50:04 lwall |
53 | * patch2: moved yydebug to where its type didn't matter | |
54 | * | |
a687059c LW |
55 | * Revision 3.0 89/10/18 15:22:21 lwall |
56 | * 3.0 baseline | |
8d063cd8 LW |
57 | * |
58 | */ | |
59 | ||
378cc40b LW |
60 | #include "EXTERN.h" |
61 | #include "perl.h" | |
62 | #include "perly.h" | |
20188a90 LW |
63 | #ifdef MSDOS |
64 | #include "patchlev.h" | |
65 | #else | |
a687059c | 66 | #include "patchlevel.h" |
20188a90 | 67 | #endif |
378cc40b | 68 | |
a687059c LW |
69 | #ifdef IAMSUID |
70 | #ifndef DOSUID | |
71 | #define DOSUID | |
72 | #endif | |
73 | #endif | |
378cc40b | 74 | |
a687059c LW |
75 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
76 | #ifdef DOSUID | |
77 | #undef DOSUID | |
78 | #endif | |
79 | #endif | |
8d063cd8 | 80 | |
33b78306 LW |
81 | static char* moreswitches(); |
82 | static char* cddir; | |
83 | extern char **environ; | |
84 | static bool minus_c; | |
85 | ||
8d063cd8 LW |
86 | main(argc,argv,env) |
87 | register int argc; | |
88 | register char **argv; | |
89 | register char **env; | |
90 | { | |
91 | register STR *str; | |
92 | register char *s; | |
378cc40b LW |
93 | char *index(), *strcpy(), *getenv(); |
94 | bool dosearch = FALSE; | |
a687059c | 95 | #ifdef DOSUID |
13281fa4 LW |
96 | char *validarg = ""; |
97 | #endif | |
8d063cd8 | 98 | |
a687059c LW |
99 | #ifdef SETUID_SCRIPTS_ARE_SECURE_NOW |
100 | #ifdef IAMSUID | |
101 | #undef IAMSUID | |
102 | fatal("suidperl is no longer needed since the kernel can now execute\n\ | |
103 | setuid perl scripts securely.\n"); | |
104 | #endif | |
105 | #endif | |
106 | ||
ac58e20f LW |
107 | origargv = argv; |
108 | origargc = argc; | |
378cc40b LW |
109 | uid = (int)getuid(); |
110 | euid = (int)geteuid(); | |
a687059c LW |
111 | gid = (int)getgid(); |
112 | egid = (int)getegid(); | |
0f85fab0 LW |
113 | #ifdef MSDOS |
114 | /* | |
115 | * There is no way we can refer to them from Perl so close them to save | |
116 | * space. The other alternative would be to provide STDAUX and STDPRN | |
117 | * filehandles. | |
118 | */ | |
119 | (void)fclose(stdaux); | |
120 | (void)fclose(stdprn); | |
121 | #endif | |
a687059c | 122 | if (do_undump) { |
33b78306 | 123 | origfilename = savestr(argv[0]); |
a687059c | 124 | do_undump = 0; |
ac58e20f | 125 | loop_ptr = -1; /* start label stack again */ |
a687059c LW |
126 | goto just_doit; |
127 | } | |
128 | (void)sprintf(index(rcsid,'#'), "%d\n", PATCHLEVEL); | |
129 | linestr = Str_new(65,80); | |
378cc40b | 130 | str_nset(linestr,"",0); |
a687059c LW |
131 | str = str_make("",0); /* first used for -I flags */ |
132 | curstash = defstash = hnew(0); | |
133 | curstname = str_make("main",4); | |
134 | stab_xhash(stabent("_main",TRUE)) = defstash; | |
20188a90 | 135 | defstash->tbl_name = "main"; |
33b78306 | 136 | incstab = hadd(aadd(stabent("INC",TRUE))); |
a687059c | 137 | incstab->str_pok |= SP_MULTI; |
33b78306 | 138 | for (argc--,argv++; argc > 0; argc--,argv++) { |
8d063cd8 LW |
139 | if (argv[0][0] != '-' || !argv[0][1]) |
140 | break; | |
13281fa4 LW |
141 | #ifdef DOSUID |
142 | if (*validarg) | |
143 | validarg = " PHOOEY "; | |
144 | else | |
145 | validarg = argv[0]; | |
146 | #endif | |
147 | s = argv[0]+1; | |
8d063cd8 | 148 | reswitch: |
13281fa4 | 149 | switch (*s) { |
378cc40b | 150 | case 'a': |
33b78306 | 151 | case 'c': |
a687059c | 152 | case 'd': |
8d063cd8 | 153 | case 'D': |
33b78306 LW |
154 | case 'i': |
155 | case 'n': | |
156 | case 'p': | |
157 | case 'u': | |
158 | case 'U': | |
159 | case 'v': | |
160 | case 'w': | |
161 | if (s = moreswitches(s)) | |
162 | goto reswitch; | |
8d063cd8 | 163 | break; |
33b78306 | 164 | |
8d063cd8 | 165 | case 'e': |
a687059c LW |
166 | #ifdef TAINT |
167 | if (euid != uid || egid != gid) | |
168 | fatal("No -e allowed in setuid scripts"); | |
169 | #endif | |
8d063cd8 | 170 | if (!e_fp) { |
a687059c LW |
171 | e_tmpname = savestr(TMPPATH); |
172 | (void)mktemp(e_tmpname); | |
8d063cd8 | 173 | e_fp = fopen(e_tmpname,"w"); |
33b78306 LW |
174 | if (!e_fp) |
175 | fatal("Cannot open temporary file"); | |
8d063cd8 | 176 | } |
33b78306 | 177 | if (argv[1]) { |
8d063cd8 | 178 | fputs(argv[1],e_fp); |
33b78306 LW |
179 | argc--,argv++; |
180 | } | |
a687059c | 181 | (void)putc('\n', e_fp); |
8d063cd8 LW |
182 | break; |
183 | case 'I': | |
a687059c LW |
184 | #ifdef TAINT |
185 | if (euid != uid || egid != gid) | |
186 | fatal("No -I allowed in setuid scripts"); | |
187 | #endif | |
13281fa4 LW |
188 | str_cat(str,"-"); |
189 | str_cat(str,s); | |
8d063cd8 | 190 | str_cat(str," "); |
a687059c LW |
191 | if (*++s) { |
192 | (void)apush(stab_array(incstab),str_make(s,0)); | |
378cc40b | 193 | } |
33b78306 | 194 | else if (argv[1]) { |
a687059c | 195 | (void)apush(stab_array(incstab),str_make(argv[1],0)); |
8d063cd8 LW |
196 | str_cat(str,argv[1]); |
197 | argc--,argv++; | |
198 | str_cat(str," "); | |
199 | } | |
200 | break; | |
8d063cd8 | 201 | case 'P': |
a687059c LW |
202 | #ifdef TAINT |
203 | if (euid != uid || egid != gid) | |
204 | fatal("No -P allowed in setuid scripts"); | |
205 | #endif | |
8d063cd8 | 206 | preprocess = TRUE; |
13281fa4 | 207 | s++; |
8d063cd8 LW |
208 | goto reswitch; |
209 | case 's': | |
a687059c LW |
210 | #ifdef TAINT |
211 | if (euid != uid || egid != gid) | |
212 | fatal("No -s allowed in setuid scripts"); | |
213 | #endif | |
8d063cd8 | 214 | doswitches = TRUE; |
13281fa4 | 215 | s++; |
8d063cd8 | 216 | goto reswitch; |
378cc40b LW |
217 | case 'S': |
218 | dosearch = TRUE; | |
13281fa4 | 219 | s++; |
378cc40b | 220 | goto reswitch; |
33b78306 LW |
221 | case 'x': |
222 | doextract = TRUE; | |
13281fa4 | 223 | s++; |
33b78306 LW |
224 | if (*s) |
225 | cddir = savestr(s); | |
226 | break; | |
8d063cd8 LW |
227 | case '-': |
228 | argc--,argv++; | |
229 | goto switch_end; | |
230 | case 0: | |
231 | break; | |
232 | default: | |
13281fa4 | 233 | fatal("Unrecognized switch: -%s",s); |
8d063cd8 LW |
234 | } |
235 | } | |
236 | switch_end: | |
237 | if (e_fp) { | |
a687059c | 238 | (void)fclose(e_fp); |
8d063cd8 LW |
239 | argc++,argv--; |
240 | argv[0] = e_tmpname; | |
241 | } | |
378cc40b LW |
242 | #ifndef PRIVLIB |
243 | #define PRIVLIB "/usr/local/lib/perl" | |
244 | #endif | |
a687059c | 245 | (void)apush(stab_array(incstab),str_make(PRIVLIB,0)); |
33b78306 | 246 | (void)apush(stab_array(incstab),str_make(".",1)); |
8d063cd8 LW |
247 | |
248 | str_set(&str_no,No); | |
249 | str_set(&str_yes,Yes); | |
8d063cd8 LW |
250 | |
251 | /* open script */ | |
252 | ||
253 | if (argv[0] == Nullch) | |
34de22dd LW |
254 | #ifdef MSDOS |
255 | { | |
256 | if ( isatty(fileno(stdin)) ) | |
257 | moreswitches("v"); | |
258 | argv[0] = "-"; | |
259 | } | |
260 | #else | |
8d063cd8 | 261 | argv[0] = "-"; |
34de22dd | 262 | #endif |
a687059c | 263 | if (dosearch && !index(argv[0], '/') && (s = getenv("PATH"))) { |
378cc40b | 264 | char *xfound = Nullch, *xfailed = Nullch; |
a687059c | 265 | int len; |
378cc40b | 266 | |
a687059c | 267 | bufend = s + strlen(s); |
378cc40b | 268 | while (*s) { |
33b78306 | 269 | #ifndef MSDOS |
a687059c | 270 | s = cpytill(tokenbuf,s,bufend,':',&len); |
33b78306 LW |
271 | #else |
272 | for (len = 0; *s && *s != ';'; tokenbuf[len++] = *s++); | |
273 | tokenbuf[len] = '\0'; | |
274 | #endif | |
378cc40b LW |
275 | if (*s) |
276 | s++; | |
33b78306 LW |
277 | #ifndef MSDOS |
278 | if (len && tokenbuf[len-1] != '/') | |
279 | #else | |
280 | if (len && tokenbuf[len-1] != '\\') | |
281 | #endif | |
a687059c LW |
282 | (void)strcat(tokenbuf+len,"/"); |
283 | (void)strcat(tokenbuf+len,argv[0]); | |
378cc40b LW |
284 | #ifdef DEBUGGING |
285 | if (debug & 1) | |
286 | fprintf(stderr,"Looking for %s\n",tokenbuf); | |
287 | #endif | |
288 | if (stat(tokenbuf,&statbuf) < 0) /* not there? */ | |
289 | continue; | |
290 | if ((statbuf.st_mode & S_IFMT) == S_IFREG | |
a687059c | 291 | && cando(S_IREAD,TRUE,&statbuf) && cando(S_IEXEC,TRUE,&statbuf)) { |
378cc40b LW |
292 | xfound = tokenbuf; /* bingo! */ |
293 | break; | |
294 | } | |
295 | if (!xfailed) | |
296 | xfailed = savestr(tokenbuf); | |
297 | } | |
298 | if (!xfound) | |
a687059c | 299 | fatal("Can't execute %s", xfailed ? xfailed : argv[0] ); |
378cc40b | 300 | if (xfailed) |
a687059c | 301 | Safefree(xfailed); |
378cc40b LW |
302 | argv[0] = savestr(xfound); |
303 | } | |
a687059c | 304 | |
20188a90 LW |
305 | fdpid = anew(Nullstab); /* for remembering popen pids by fd */ |
306 | pidstatus = hnew(Nullstab); /* for remembering status of dead pids */ | |
a687059c | 307 | |
33b78306 | 308 | origfilename = savestr(argv[0]); |
20188a90 LW |
309 | curcmd->c_filestab = fstab(origfilename); |
310 | if (strEQ(origfilename,"-")) | |
8d063cd8 LW |
311 | argv[0] = ""; |
312 | if (preprocess) { | |
378cc40b LW |
313 | str_cat(str,"-I"); |
314 | str_cat(str,PRIVLIB); | |
a687059c | 315 | (void)sprintf(buf, "\ |
20188a90 | 316 | %ssed %s -e '/^[^#]/b' \ |
8d063cd8 LW |
317 | -e '/^#[ ]*include[ ]/b' \ |
318 | -e '/^#[ ]*define[ ]/b' \ | |
319 | -e '/^#[ ]*if[ ]/b' \ | |
320 | -e '/^#[ ]*ifdef[ ]/b' \ | |
378cc40b | 321 | -e '/^#[ ]*ifndef[ ]/b' \ |
8d063cd8 LW |
322 | -e '/^#[ ]*else/b' \ |
323 | -e '/^#[ ]*endif/b' \ | |
324 | -e 's/^#.*//' \ | |
378cc40b | 325 | %s | %s -C %s %s", |
20188a90 LW |
326 | #ifdef MSDOS |
327 | "", | |
328 | #else | |
329 | "/bin/", | |
330 | #endif | |
33b78306 | 331 | (doextract ? "-e '1,/^#/d\n'" : ""), |
378cc40b | 332 | argv[0], CPPSTDIN, str_get(str), CPPMINUS); |
34de22dd LW |
333 | #ifdef DEBUGGING |
334 | if (debug & 64) { | |
335 | fputs(buf,stderr); | |
336 | fputs("\n",stderr); | |
337 | } | |
338 | #endif | |
339 | doextract = FALSE; | |
a687059c | 340 | #ifdef IAMSUID /* actually, this is caught earlier */ |
13281fa4 | 341 | if (euid != uid && !euid) /* if running suidperl */ |
a687059c LW |
342 | #ifdef SETEUID |
343 | (void)seteuid(uid); /* musn't stay setuid root */ | |
344 | #else | |
345 | #ifdef SETREUID | |
346 | (void)setreuid(-1, uid); | |
347 | #else | |
348 | setuid(uid); | |
349 | #endif | |
13281fa4 | 350 | #endif |
a687059c LW |
351 | #endif /* IAMSUID */ |
352 | rsfp = mypopen(buf,"r"); | |
8d063cd8 LW |
353 | } |
354 | else if (!*argv[0]) | |
355 | rsfp = stdin; | |
356 | else | |
357 | rsfp = fopen(argv[0],"r"); | |
13281fa4 LW |
358 | if (rsfp == Nullfp) { |
359 | #ifdef DOSUID | |
a687059c | 360 | #ifndef IAMSUID /* in case script is not readable before setuid */ |
20188a90 | 361 | if (euid && stat(stab_val(curcmd->c_filestab)->str_ptr,&statbuf) >= 0 && |
13281fa4 | 362 | statbuf.st_mode & (S_ISUID|S_ISGID)) { |
a687059c LW |
363 | (void)sprintf(buf, "%s/%s", BIN, "suidperl"); |
364 | execv(buf, origargv); /* try again */ | |
13281fa4 LW |
365 | fatal("Can't do setuid\n"); |
366 | } | |
367 | #endif | |
368 | #endif | |
a687059c | 369 | fatal("Can't open perl script \"%s\": %s\n", |
20188a90 | 370 | stab_val(curcmd->c_filestab)->str_ptr, strerror(errno)); |
13281fa4 | 371 | } |
8d063cd8 LW |
372 | str_free(str); /* free -I directories */ |
373 | ||
13281fa4 LW |
374 | /* do we need to emulate setuid on scripts? */ |
375 | ||
376 | /* This code is for those BSD systems that have setuid #! scripts disabled | |
377 | * in the kernel because of a security problem. Merely defining DOSUID | |
378 | * in perl will not fix that problem, but if you have disabled setuid | |
379 | * scripts in the kernel, this will attempt to emulate setuid and setgid | |
380 | * on scripts that have those now-otherwise-useless bits set. The setuid | |
381 | * root version must be called suidperl. If regular perl discovers that | |
382 | * it has opened a setuid script, it calls suidperl with the same argv | |
383 | * that it had. If suidperl finds that the script it has just opened | |
384 | * is NOT setuid root, it sets the effective uid back to the uid. We | |
385 | * don't just make perl setuid root because that loses the effective | |
386 | * uid we had before invoking perl, if it was different from the uid. | |
387 | * | |
388 | * DOSUID must be defined in both perl and suidperl, and IAMSUID must | |
389 | * be defined in suidperl only. suidperl must be setuid root. The | |
390 | * Configure script will set this up for you if you want it. | |
a687059c LW |
391 | * |
392 | * There is also the possibility of have a script which is running | |
393 | * set-id due to a C wrapper. We want to do the TAINT checks | |
394 | * on these set-id scripts, but don't want to have the overhead of | |
395 | * them in normal perl, and can't use suidperl because it will lose | |
396 | * the effective uid info, so we have an additional non-setuid root | |
397 | * version called taintperl that just does the TAINT checks. | |
13281fa4 | 398 | */ |
a687059c | 399 | |
13281fa4 LW |
400 | #ifdef DOSUID |
401 | if (fstat(fileno(rsfp),&statbuf) < 0) /* normal stat is insecure */ | |
20188a90 | 402 | fatal("Can't stat script \"%s\"",origfilename); |
13281fa4 LW |
403 | if (statbuf.st_mode & (S_ISUID|S_ISGID)) { |
404 | int len; | |
405 | ||
a687059c LW |
406 | #ifdef IAMSUID |
407 | #ifndef SETREUID | |
408 | /* On this access check to make sure the directories are readable, | |
409 | * there is actually a small window that the user could use to make | |
410 | * filename point to an accessible directory. So there is a faint | |
411 | * chance that someone could execute a setuid script down in a | |
412 | * non-accessible directory. I don't know what to do about that. | |
413 | * But I don't think it's too important. The manual lies when | |
414 | * it says access() is useful in setuid programs. | |
415 | */ | |
20188a90 | 416 | if (access(stab_val(curcmd->c_filestab)->str_ptr,1)) /*double check*/ |
13281fa4 | 417 | fatal("Permission denied"); |
a687059c LW |
418 | #else |
419 | /* If we can swap euid and uid, then we can determine access rights | |
420 | * with a simple stat of the file, and then compare device and | |
421 | * inode to make sure we did stat() on the same file we opened. | |
422 | * Then we just have to make sure he or she can execute it. | |
423 | */ | |
424 | { | |
425 | struct stat tmpstatbuf; | |
426 | ||
427 | if (setreuid(euid,uid) < 0 || getuid() != euid || geteuid() != uid) | |
428 | fatal("Can't swap uid and euid"); /* really paranoid */ | |
20188a90 LW |
429 | if (stat(stab_val(curcmd->c_filestab)->str_ptr,&tmpstatbuf) < 0) |
430 | fatal("Permission denied"); /* testing full pathname here */ | |
a687059c LW |
431 | if (tmpstatbuf.st_dev != statbuf.st_dev || |
432 | tmpstatbuf.st_ino != statbuf.st_ino) { | |
433 | (void)fclose(rsfp); | |
434 | if (rsfp = mypopen("/bin/mail root","w")) { /* heh, heh */ | |
435 | fprintf(rsfp, | |
436 | "User %d tried to run dev %d ino %d in place of dev %d ino %d!\n\ | |
437 | (Filename of set-id script was %s, uid %d gid %d.)\n\nSincerely,\nperl\n", | |
438 | uid,tmpstatbuf.st_dev, tmpstatbuf.st_ino, | |
439 | statbuf.st_dev, statbuf.st_ino, | |
20188a90 LW |
440 | stab_val(curcmd->c_filestab)->str_ptr, |
441 | statbuf.st_uid, statbuf.st_gid); | |
a687059c LW |
442 | (void)mypclose(rsfp); |
443 | } | |
444 | fatal("Permission denied\n"); | |
445 | } | |
446 | if (setreuid(uid,euid) < 0 || getuid() != uid || geteuid() != euid) | |
447 | fatal("Can't reswap uid and euid"); | |
448 | if (!cando(S_IEXEC,FALSE,&statbuf)) /* can real uid exec? */ | |
449 | fatal("Permission denied\n"); | |
450 | } | |
451 | #endif /* SETREUID */ | |
452 | #endif /* IAMSUID */ | |
453 | ||
13281fa4 LW |
454 | if ((statbuf.st_mode & S_IFMT) != S_IFREG) |
455 | fatal("Permission denied"); | |
a687059c LW |
456 | if ((statbuf.st_mode >> 6) & S_IWRITE) |
457 | fatal("Setuid/gid script is writable by world"); | |
13281fa4 | 458 | doswitches = FALSE; /* -s is insecure in suid */ |
33b78306 | 459 | curcmd->c_line++; |
13281fa4 LW |
460 | if (fgets(tokenbuf,sizeof tokenbuf, rsfp) == Nullch || |
461 | strnNE(tokenbuf,"#!",2) ) /* required even on Sys V */ | |
462 | fatal("No #! line"); | |
663a0e37 LW |
463 | s = tokenbuf+2; |
464 | if (*s == ' ') s++; | |
465 | while (!isspace(*s)) s++; | |
13281fa4 LW |
466 | if (strnNE(s-4,"perl",4)) /* sanity check */ |
467 | fatal("Not a perl script"); | |
a687059c | 468 | while (*s == ' ' || *s == '\t') s++; |
13281fa4 LW |
469 | /* |
470 | * #! arg must be what we saw above. They can invoke it by | |
471 | * mentioning suidperl explicitly, but they may not add any strange | |
472 | * arguments beyond what #! says if they do invoke suidperl that way. | |
473 | */ | |
474 | len = strlen(validarg); | |
475 | if (strEQ(validarg," PHOOEY ") || | |
476 | strnNE(s,validarg,len) || !isspace(s[len])) | |
a687059c LW |
477 | fatal("Args must match #! line"); |
478 | ||
479 | #ifndef IAMSUID | |
480 | if (euid != uid && (statbuf.st_mode & S_ISUID) && | |
481 | euid == statbuf.st_uid) | |
482 | if (!do_undump) | |
483 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ | |
484 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); | |
485 | #endif /* IAMSUID */ | |
13281fa4 LW |
486 | |
487 | if (euid) { /* oops, we're not the setuid root perl */ | |
a687059c | 488 | (void)fclose(rsfp); |
13281fa4 | 489 | #ifndef IAMSUID |
a687059c LW |
490 | (void)sprintf(buf, "%s/%s", BIN, "suidperl"); |
491 | execv(buf, origargv); /* try again */ | |
13281fa4 LW |
492 | #endif |
493 | fatal("Can't do setuid\n"); | |
494 | } | |
495 | ||
ffed7fef | 496 | if (statbuf.st_mode & S_ISGID && statbuf.st_gid != egid) |
a687059c LW |
497 | #ifdef SETEGID |
498 | (void)setegid(statbuf.st_gid); | |
499 | #else | |
500 | #ifdef SETREGID | |
501 | (void)setregid((GIDTYPE)-1,statbuf.st_gid); | |
502 | #else | |
503 | setgid(statbuf.st_gid); | |
504 | #endif | |
505 | #endif | |
506 | if (statbuf.st_mode & S_ISUID) { | |
507 | if (statbuf.st_uid != euid) | |
508 | #ifdef SETEUID | |
509 | (void)seteuid(statbuf.st_uid); /* all that for this */ | |
510 | #else | |
511 | #ifdef SETREUID | |
512 | (void)setreuid((UIDTYPE)-1,statbuf.st_uid); | |
513 | #else | |
514 | setuid(statbuf.st_uid); | |
515 | #endif | |
516 | #endif | |
517 | } | |
518 | else if (uid) /* oops, mustn't run as root */ | |
519 | #ifdef SETEUID | |
520 | (void)seteuid((UIDTYPE)uid); | |
521 | #else | |
522 | #ifdef SETREUID | |
523 | (void)setreuid((UIDTYPE)-1,(UIDTYPE)uid); | |
524 | #else | |
525 | setuid((UIDTYPE)uid); | |
526 | #endif | |
527 | #endif | |
ffed7fef | 528 | uid = (int)getuid(); |
13281fa4 | 529 | euid = (int)geteuid(); |
ffed7fef LW |
530 | gid = (int)getgid(); |
531 | egid = (int)getegid(); | |
a687059c | 532 | if (!cando(S_IEXEC,TRUE,&statbuf)) |
13281fa4 LW |
533 | fatal("Permission denied\n"); /* they can't do this */ |
534 | } | |
535 | #ifdef IAMSUID | |
536 | else if (preprocess) | |
537 | fatal("-P not allowed for setuid/setgid script\n"); | |
538 | else | |
539 | fatal("Script is not setuid/setgid in suidperl\n"); | |
a687059c LW |
540 | #else |
541 | #ifndef TAINT /* we aren't taintperl or suidperl */ | |
542 | /* script has a wrapper--can't run suidperl or we lose euid */ | |
543 | else if (euid != uid || egid != gid) { | |
544 | (void)fclose(rsfp); | |
545 | (void)sprintf(buf, "%s/%s", BIN, "taintperl"); | |
546 | execv(buf, origargv); /* try again */ | |
547 | fatal("Can't run setuid script with taint checks"); | |
548 | } | |
549 | #endif /* TAINT */ | |
13281fa4 | 550 | #endif /* IAMSUID */ |
a687059c LW |
551 | #else /* !DOSUID */ |
552 | #ifndef TAINT /* we aren't taintperl or suidperl */ | |
553 | if (euid != uid || egid != gid) { /* (suidperl doesn't exist, in fact) */ | |
554 | #ifndef SETUID_SCRIPTS_ARE_SECURE_NOW | |
555 | fstat(fileno(rsfp),&statbuf); /* may be either wrapped or real suid */ | |
556 | if ((euid != uid && euid == statbuf.st_uid && statbuf.st_mode & S_ISUID) | |
557 | || | |
558 | (egid != gid && egid == statbuf.st_gid && statbuf.st_mode & S_ISGID) | |
559 | ) | |
560 | if (!do_undump) | |
561 | fatal("YOU HAVEN'T DISABLED SET-ID SCRIPTS IN THE KERNEL YET!\n\ | |
562 | FIX YOUR KERNEL, PUT A C WRAPPER AROUND THIS SCRIPT, OR USE -u AND UNDUMP!\n"); | |
563 | #endif /* SETUID_SCRIPTS_ARE_SECURE_NOW */ | |
564 | /* not set-id, must be wrapped */ | |
565 | (void)fclose(rsfp); | |
566 | (void)sprintf(buf, "%s/%s", BIN, "taintperl"); | |
567 | execv(buf, origargv); /* try again */ | |
568 | fatal("Can't run setuid script with taint checks"); | |
569 | } | |
570 | #endif /* TAINT */ | |
13281fa4 LW |
571 | #endif /* DOSUID */ |
572 | ||
33b78306 LW |
573 | #if !defined(IAMSUID) && !defined(TAINT) |
574 | ||
575 | /* skip forward in input to the real script? */ | |
576 | ||
577 | while (doextract) { | |
578 | if ((s = str_gets(linestr, rsfp, 0)) == Nullch) | |
579 | fatal("No Perl script found in input\n"); | |
580 | if (*s == '#' && s[1] == '!' && instr(s,"perl")) { | |
581 | ungetc('\n',rsfp); /* to keep line count right */ | |
582 | doextract = FALSE; | |
583 | if (s = instr(s,"perl -")) { | |
584 | s += 6; | |
585 | while (s = moreswitches(s)) ; | |
586 | } | |
587 | if (cddir && chdir(cddir) < 0) | |
588 | fatal("Can't chdir to %s",cddir); | |
589 | } | |
590 | } | |
591 | #endif /* !defined(IAMSUID) && !defined(TAINT) */ | |
592 | ||
8d063cd8 LW |
593 | defstab = stabent("_",TRUE); |
594 | ||
a687059c LW |
595 | if (perldb) { |
596 | debstash = hnew(0); | |
597 | stab_xhash(stabent("_DB",TRUE)) = debstash; | |
598 | curstash = debstash; | |
20188a90 | 599 | dbargs = stab_xarray(aadd((tmpstab = stabent("args",TRUE)))); |
a687059c | 600 | tmpstab->str_pok |= SP_MULTI; |
20188a90 | 601 | dbargs->ary_flags = 0; |
a687059c LW |
602 | subname = str_make("main",4); |
603 | DBstab = stabent("DB",TRUE); | |
604 | DBstab->str_pok |= SP_MULTI; | |
20188a90 LW |
605 | DBline = stabent("dbline",TRUE); |
606 | DBline->str_pok |= SP_MULTI; | |
a687059c LW |
607 | DBsub = hadd(tmpstab = stabent("sub",TRUE)); |
608 | tmpstab->str_pok |= SP_MULTI; | |
609 | DBsingle = stab_val((tmpstab = stabent("single",TRUE))); | |
610 | tmpstab->str_pok |= SP_MULTI; | |
20188a90 LW |
611 | DBtrace = stab_val((tmpstab = stabent("trace",TRUE))); |
612 | tmpstab->str_pok |= SP_MULTI; | |
613 | DBsignal = stab_val((tmpstab = stabent("signal",TRUE))); | |
614 | tmpstab->str_pok |= SP_MULTI; | |
a687059c LW |
615 | curstash = defstash; |
616 | } | |
617 | ||
8d063cd8 LW |
618 | /* init tokener */ |
619 | ||
a687059c LW |
620 | bufend = bufptr = str_get(linestr); |
621 | ||
622 | savestack = anew(Nullstab); /* for saving non-local values */ | |
623 | stack = anew(Nullstab); /* for saving non-local values */ | |
624 | stack->ary_flags = 0; /* not a real array */ | |
6eb13c3b LW |
625 | afill(stack,63); afill(stack,-1); /* preextend stack */ |
626 | afill(savestack,63); afill(savestack,-1); | |
8d063cd8 | 627 | |
a687059c | 628 | /* now parse the script */ |
8d063cd8 | 629 | |
a687059c | 630 | error_count = 0; |
33b78306 LW |
631 | if (yyparse() || error_count) { |
632 | if (minus_c) | |
633 | fatal("%s had compilation errors.\n", origfilename); | |
634 | else { | |
635 | fatal("Execution of %s aborted due to compilation errors.\n", | |
636 | origfilename); | |
637 | } | |
638 | } | |
8d063cd8 | 639 | |
a687059c | 640 | New(50,loop_stack,128,struct loop); |
ae986130 LW |
641 | #ifdef DEBUGGING |
642 | if (debug) { | |
643 | New(51,debname,128,char); | |
644 | New(52,debdelim,128,char); | |
645 | } | |
646 | #endif | |
a687059c | 647 | curstash = defstash; |
378cc40b LW |
648 | |
649 | preprocess = FALSE; | |
8d063cd8 LW |
650 | if (e_fp) { |
651 | e_fp = Nullfp; | |
a687059c LW |
652 | (void)UNLINK(e_tmpname); |
653 | } | |
654 | ||
655 | /* initialize everything that won't change if we undump */ | |
656 | ||
657 | if (sigstab = stabent("SIG",allstabs)) { | |
658 | sigstab->str_pok |= SP_MULTI; | |
659 | (void)hadd(sigstab); | |
660 | } | |
661 | ||
34de22dd | 662 | magicalize("!#?^~=-%123456789.+&*()<>,\\/[|`':\024"); |
33b78306 | 663 | userinit(); /* in case linked C routines want magical variables */ |
a687059c LW |
664 | |
665 | amperstab = stabent("&",allstabs); | |
666 | leftstab = stabent("`",allstabs); | |
667 | rightstab = stabent("'",allstabs); | |
668 | sawampersand = (amperstab || leftstab || rightstab); | |
669 | if (tmpstab = stabent(":",allstabs)) | |
670 | str_set(STAB_STR(tmpstab),chopset); | |
20188a90 LW |
671 | if (tmpstab = stabent("\024",allstabs)) |
672 | time(&basetime); | |
a687059c LW |
673 | |
674 | /* these aren't necessarily magical */ | |
675 | if (tmpstab = stabent(";",allstabs)) | |
676 | str_set(STAB_STR(tmpstab),"\034"); | |
33b78306 LW |
677 | if (tmpstab = stabent("]",allstabs)) { |
678 | str = STAB_STR(tmpstab); | |
679 | str_set(str,rcsid); | |
680 | strncpy(tokenbuf,rcsid+19,3); | |
681 | sprintf(tokenbuf+3,"%2.2d",PATCHLEVEL); | |
682 | str->str_u.str_nval = atof(tokenbuf); | |
683 | str->str_nok = 1; | |
684 | } | |
a687059c LW |
685 | str_nset(stab_val(stabent("\"", TRUE)), " ", 1); |
686 | ||
687 | stdinstab = stabent("STDIN",TRUE); | |
688 | stdinstab->str_pok |= SP_MULTI; | |
689 | stab_io(stdinstab) = stio_new(); | |
690 | stab_io(stdinstab)->ifp = stdin; | |
691 | tmpstab = stabent("stdin",TRUE); | |
692 | stab_io(tmpstab) = stab_io(stdinstab); | |
693 | tmpstab->str_pok |= SP_MULTI; | |
694 | ||
695 | tmpstab = stabent("STDOUT",TRUE); | |
696 | tmpstab->str_pok |= SP_MULTI; | |
697 | stab_io(tmpstab) = stio_new(); | |
698 | stab_io(tmpstab)->ofp = stab_io(tmpstab)->ifp = stdout; | |
699 | defoutstab = tmpstab; | |
700 | tmpstab = stabent("stdout",TRUE); | |
701 | stab_io(tmpstab) = stab_io(defoutstab); | |
702 | tmpstab->str_pok |= SP_MULTI; | |
703 | ||
704 | curoutstab = stabent("STDERR",TRUE); | |
705 | curoutstab->str_pok |= SP_MULTI; | |
706 | stab_io(curoutstab) = stio_new(); | |
707 | stab_io(curoutstab)->ofp = stab_io(curoutstab)->ifp = stderr; | |
708 | tmpstab = stabent("stderr",TRUE); | |
709 | stab_io(tmpstab) = stab_io(curoutstab); | |
710 | tmpstab->str_pok |= SP_MULTI; | |
711 | curoutstab = defoutstab; /* switch back to STDOUT */ | |
712 | ||
713 | statname = Str_new(66,0); /* last filename we did stat on */ | |
714 | ||
a687059c | 715 | if (do_undump) |
34de22dd | 716 | my_unexec(); |
a687059c LW |
717 | |
718 | just_doit: /* come here if running an undumped a.out */ | |
8d063cd8 LW |
719 | argc--,argv++; /* skip name of script */ |
720 | if (doswitches) { | |
721 | for (; argc > 0 && **argv == '-'; argc--,argv++) { | |
722 | if (argv[0][1] == '-') { | |
723 | argc--,argv++; | |
724 | break; | |
725 | } | |
a687059c | 726 | str_numset(stab_val(stabent(argv[0]+1,TRUE)),(double)1.0); |
8d063cd8 LW |
727 | } |
728 | } | |
a687059c LW |
729 | #ifdef TAINT |
730 | tainted = 1; | |
731 | #endif | |
33b78306 | 732 | if (tmpstab = stabent("0",allstabs)) |
34de22dd | 733 | str_set(stab_val(tmpstab),origfilename); |
a559c259 | 734 | if (argvstab = stabent("ARGV",allstabs)) { |
a687059c LW |
735 | argvstab->str_pok |= SP_MULTI; |
736 | (void)aadd(argvstab); | |
33b78306 | 737 | aclear(stab_array(argvstab)); |
8d063cd8 | 738 | for (; argc > 0; argc--,argv++) { |
a687059c | 739 | (void)apush(stab_array(argvstab),str_make(argv[0],0)); |
8d063cd8 LW |
740 | } |
741 | } | |
a687059c LW |
742 | #ifdef TAINT |
743 | (void) stabent("ENV",TRUE); /* must test PATH and IFS */ | |
744 | #endif | |
a559c259 | 745 | if (envstab = stabent("ENV",allstabs)) { |
a687059c LW |
746 | envstab->str_pok |= SP_MULTI; |
747 | (void)hadd(envstab); | |
20188a90 | 748 | hclear(stab_hash(envstab), FALSE); |
33b78306 LW |
749 | if (env != environ) |
750 | environ[0] = Nullch; | |
8d063cd8 LW |
751 | for (; *env; env++) { |
752 | if (!(s = index(*env,'='))) | |
753 | continue; | |
754 | *s++ = '\0'; | |
a687059c LW |
755 | str = str_make(s--,0); |
756 | str_magic(str, envstab, 'E', *env, s - *env); | |
757 | (void)hstore(stab_hash(envstab), *env, s - *env, str, 0); | |
758 | *s = '='; | |
8d063cd8 LW |
759 | } |
760 | } | |
a687059c LW |
761 | #ifdef TAINT |
762 | tainted = 0; | |
763 | #endif | |
378cc40b | 764 | if (tmpstab = stabent("$",allstabs)) |
8d063cd8 LW |
765 | str_numset(STAB_STR(tmpstab),(double)getpid()); |
766 | ||
20188a90 LW |
767 | if (dowarn) { |
768 | stab_check('A','Z'); | |
769 | stab_check('a','z'); | |
770 | } | |
771 | ||
a687059c | 772 | if (setjmp(top_env)) /* sets goto_targ on longjump */ |
ac58e20f | 773 | loop_ptr = -1; /* start label stack again */ |
8d063cd8 LW |
774 | |
775 | #ifdef DEBUGGING | |
776 | if (debug & 1024) | |
a687059c | 777 | dump_all(); |
8d063cd8 LW |
778 | if (debug) |
779 | fprintf(stderr,"\nEXECUTING...\n\n"); | |
780 | #endif | |
781 | ||
33b78306 LW |
782 | if (minus_c) { |
783 | fprintf(stderr,"%s syntax OK\n", origfilename); | |
784 | exit(0); | |
785 | } | |
786 | ||
8d063cd8 LW |
787 | /* do it */ |
788 | ||
a687059c | 789 | (void) cmd_exec(main_root,G_SCALAR,-1); |
8d063cd8 LW |
790 | |
791 | if (goto_targ) | |
378cc40b | 792 | fatal("Can't find label \"%s\"--aborting",goto_targ); |
8d063cd8 | 793 | exit(0); |
378cc40b | 794 | /* NOTREACHED */ |
8d063cd8 LW |
795 | } |
796 | ||
797 | magicalize(list) | |
798 | register char *list; | |
799 | { | |
8d063cd8 LW |
800 | char sym[2]; |
801 | ||
802 | sym[1] = '\0'; | |
33b78306 LW |
803 | while (*sym = *list++) |
804 | magicname(sym, Nullch, 0); | |
805 | } | |
806 | ||
807 | int | |
808 | magicname(sym,name,namlen) | |
809 | char *sym; | |
810 | char *name; | |
811 | int namlen; | |
812 | { | |
813 | register STAB *stab; | |
814 | ||
815 | if (stab = stabent(sym,allstabs)) { | |
816 | stab_flags(stab) = SF_VMAGIC; | |
817 | str_magic(stab_val(stab), stab, 0, name, namlen); | |
378cc40b | 818 | } |
8d063cd8 LW |
819 | } |
820 | ||
a687059c | 821 | /* this routine is in perly.c by virtue of being sort of an alternate main() */ |
8d063cd8 | 822 | |
a687059c LW |
823 | int |
824 | do_eval(str,optype,stash,gimme,arglast) | |
825 | STR *str; | |
826 | int optype; | |
827 | HASH *stash; | |
828 | int gimme; | |
829 | int *arglast; | |
8d063cd8 | 830 | { |
a687059c LW |
831 | STR **st = stack->ary_array; |
832 | int retval; | |
833 | CMD *myroot; | |
834 | ARRAY *ar; | |
835 | int i; | |
33b78306 | 836 | CMD * VOLATILE oldcurcmd = curcmd; |
ac58e20f LW |
837 | VOLATILE int oldtmps_base = tmps_base; |
838 | VOLATILE int oldsave = savestack->ary_fill; | |
20188a90 | 839 | VOLATILE int oldperldb = perldb; |
ac58e20f | 840 | SPAT * VOLATILE oldspat = curspat; |
a687059c LW |
841 | static char *last_eval = Nullch; |
842 | static CMD *last_root = Nullcmd; | |
663a0e37 | 843 | VOLATILE int sp = arglast[0]; |
33b78306 | 844 | char *specfilename; |
20188a90 | 845 | char *tmpfilename; |
8d063cd8 | 846 | |
a687059c LW |
847 | tmps_base = tmps_max; |
848 | if (curstash != stash) { | |
849 | (void)savehptr(&curstash); | |
850 | curstash = stash; | |
8d063cd8 | 851 | } |
a687059c | 852 | str_set(stab_val(stabent("@",TRUE)),""); |
20188a90 LW |
853 | if (curcmd->c_line == 0) /* don't debug debugger... */ |
854 | perldb = FALSE; | |
33b78306 LW |
855 | curcmd = &compiling; |
856 | if (optype == O_EVAL) { /* normal eval */ | |
20188a90 | 857 | curcmd->c_filestab = fstab("(eval)"); |
33b78306 | 858 | curcmd->c_line = 1; |
a687059c LW |
859 | str_sset(linestr,str); |
860 | str_cat(linestr,";"); /* be kind to them */ | |
8d063cd8 | 861 | } |
a687059c | 862 | else { |
0f85fab0 | 863 | if (last_root && !in_eval) { |
a687059c LW |
864 | Safefree(last_eval); |
865 | cmd_free(last_root); | |
866 | last_root = Nullcmd; | |
8d063cd8 | 867 | } |
33b78306 | 868 | specfilename = str_get(str); |
a687059c | 869 | str_set(linestr,""); |
20188a90 | 870 | if (optype == O_REQUIRE && &str_undef != |
33b78306 | 871 | hfetch(stab_hash(incstab), specfilename, strlen(specfilename), 0)) { |
20188a90 | 872 | curcmd = oldcurcmd; |
33b78306 LW |
873 | tmps_base = oldtmps_base; |
874 | st[++sp] = &str_yes; | |
20188a90 | 875 | perldb = oldperldb; |
33b78306 LW |
876 | return sp; |
877 | } | |
20188a90 LW |
878 | tmpfilename = savestr(specfilename); |
879 | if (index("/.", *tmpfilename)) | |
880 | rsfp = fopen(tmpfilename,"r"); | |
33b78306 LW |
881 | else { |
882 | ar = stab_array(incstab); | |
a687059c | 883 | for (i = 0; i <= ar->ary_fill; i++) { |
20188a90 LW |
884 | (void)sprintf(buf, "%s/%s", |
885 | str_get(afetch(ar,i,TRUE)), specfilename); | |
a687059c LW |
886 | rsfp = fopen(buf,"r"); |
887 | if (rsfp) { | |
33b78306 LW |
888 | char *s = buf; |
889 | ||
890 | if (*s == '.' && s[1] == '/') | |
891 | s += 2; | |
20188a90 LW |
892 | Safefree(tmpfilename); |
893 | tmpfilename = savestr(s); | |
8d063cd8 LW |
894 | break; |
895 | } | |
378cc40b LW |
896 | } |
897 | } | |
20188a90 LW |
898 | curcmd->c_filestab = fstab(tmpfilename); |
899 | Safefree(tmpfilename); | |
a687059c | 900 | if (!rsfp) { |
20188a90 | 901 | curcmd = oldcurcmd; |
a687059c | 902 | tmps_base = oldtmps_base; |
33b78306 LW |
903 | if (optype == O_REQUIRE) { |
904 | sprintf(tokenbuf,"Can't locate %s in @INC", specfilename); | |
905 | if (instr(tokenbuf,".h ")) | |
906 | strcat(tokenbuf," (change .h to .ph maybe?)"); | |
907 | if (instr(tokenbuf,".ph ")) | |
6eb13c3b | 908 | strcat(tokenbuf," (did you run h2ph?)"); |
33b78306 LW |
909 | fatal("%s",tokenbuf); |
910 | } | |
a687059c LW |
911 | if (gimme != G_ARRAY) |
912 | st[++sp] = &str_undef; | |
20188a90 | 913 | perldb = oldperldb; |
a687059c | 914 | return sp; |
8d063cd8 | 915 | } |
33b78306 | 916 | curcmd->c_line = 0; |
8d063cd8 | 917 | } |
a687059c LW |
918 | in_eval++; |
919 | oldoldbufptr = oldbufptr = bufptr = str_get(linestr); | |
920 | bufend = bufptr + linestr->str_cur; | |
ac58e20f LW |
921 | if (++loop_ptr >= loop_max) { |
922 | loop_max += 128; | |
923 | Renew(loop_stack, loop_max, struct loop); | |
924 | } | |
925 | loop_stack[loop_ptr].loop_label = "_EVAL_"; | |
926 | loop_stack[loop_ptr].loop_sp = sp; | |
927 | #ifdef DEBUGGING | |
928 | if (debug & 4) { | |
929 | deb("(Pushing label #%d _EVAL_)\n", loop_ptr); | |
930 | } | |
931 | #endif | |
932 | if (setjmp(loop_stack[loop_ptr].loop_env)) { | |
a687059c LW |
933 | retval = 1; |
934 | last_root = Nullcmd; | |
8d063cd8 | 935 | } |
a687059c LW |
936 | else { |
937 | error_count = 0; | |
20188a90 | 938 | if (rsfp) { |
a687059c | 939 | retval = yyparse(); |
20188a90 LW |
940 | retval |= error_count; |
941 | } | |
a687059c LW |
942 | else if (last_root && *bufptr == *last_eval && strEQ(bufptr,last_eval)){ |
943 | retval = 0; | |
944 | eval_root = last_root; /* no point in reparsing */ | |
945 | } | |
946 | else if (in_eval == 1) { | |
947 | if (last_root) { | |
948 | Safefree(last_eval); | |
949 | cmd_free(last_root); | |
8d063cd8 | 950 | } |
a687059c LW |
951 | last_eval = savestr(bufptr); |
952 | last_root = Nullcmd; | |
953 | retval = yyparse(); | |
20188a90 | 954 | retval |= error_count; |
a687059c LW |
955 | if (!retval) |
956 | last_root = eval_root; | |
8d063cd8 | 957 | } |
a687059c LW |
958 | else |
959 | retval = yyparse(); | |
8d063cd8 | 960 | } |
a687059c | 961 | myroot = eval_root; /* in case cmd_exec does another eval! */ |
20188a90 LW |
962 | |
963 | if (retval) { | |
ac58e20f LW |
964 | st = stack->ary_array; |
965 | sp = arglast[0]; | |
966 | if (gimme != G_ARRAY) | |
967 | st[++sp] = &str_undef; | |
a687059c LW |
968 | last_root = Nullcmd; /* can't free on error, for some reason */ |
969 | if (rsfp) { | |
970 | fclose(rsfp); | |
971 | rsfp = 0; | |
972 | } | |
8d063cd8 | 973 | } |
8d063cd8 | 974 | else { |
a687059c LW |
975 | sp = cmd_exec(eval_root,gimme,sp); |
976 | st = stack->ary_array; | |
977 | for (i = arglast[0] + 1; i <= sp; i++) | |
978 | st[i] = str_static(st[i]); | |
979 | /* if we don't save result, free zaps it */ | |
980 | if (in_eval != 1 && myroot != last_root) | |
981 | cmd_free(myroot); | |
a559c259 | 982 | } |
20188a90 LW |
983 | |
984 | perldb = oldperldb; | |
a559c259 | 985 | in_eval--; |
ac58e20f | 986 | #ifdef DEBUGGING |
20188a90 LW |
987 | if (debug & 4) { |
988 | char *tmps = loop_stack[loop_ptr].loop_label; | |
989 | deb("(Popping label #%d %s)\n",loop_ptr, | |
990 | tmps ? tmps : "" ); | |
991 | } | |
ac58e20f LW |
992 | #endif |
993 | loop_ptr--; | |
378cc40b | 994 | tmps_base = oldtmps_base; |
a687059c | 995 | curspat = oldspat; |
378cc40b LW |
996 | if (savestack->ary_fill > oldsave) /* let them use local() */ |
997 | restorelist(oldsave); | |
20188a90 LW |
998 | |
999 | if (optype != O_EVAL) { | |
1000 | if (retval) { | |
1001 | if (optype == O_REQUIRE) | |
1002 | fatal("%s", str_get(stab_val(stabent("@",TRUE)))); | |
1003 | } | |
1004 | else { | |
1005 | curcmd = oldcurcmd; | |
1006 | if (gimme == G_SCALAR ? str_true(st[sp]) : sp > arglast[0]) { | |
1007 | (void)hstore(stab_hash(incstab), specfilename, | |
1008 | strlen(specfilename), str_smake(stab_val(curcmd->c_filestab)), | |
1009 | 0 ); | |
1010 | } | |
1011 | else if (optype == O_REQUIRE) | |
1012 | fatal("%s did not return a true value", specfilename); | |
1013 | } | |
1014 | } | |
1015 | curcmd = oldcurcmd; | |
a687059c | 1016 | return sp; |
378cc40b | 1017 | } |
33b78306 LW |
1018 | |
1019 | /* This routine handles any switches that can be given during run */ | |
1020 | ||
1021 | static char * | |
1022 | moreswitches(s) | |
1023 | char *s; | |
1024 | { | |
1025 | reswitch: | |
1026 | switch (*s) { | |
1027 | case 'a': | |
1028 | minus_a = TRUE; | |
1029 | s++; | |
1030 | return s; | |
1031 | case 'c': | |
1032 | minus_c = TRUE; | |
1033 | s++; | |
1034 | return s; | |
1035 | case 'd': | |
1036 | #ifdef TAINT | |
1037 | if (euid != uid || egid != gid) | |
1038 | fatal("No -d allowed in setuid scripts"); | |
1039 | #endif | |
1040 | perldb = TRUE; | |
1041 | s++; | |
1042 | return s; | |
1043 | case 'D': | |
1044 | #ifdef DEBUGGING | |
1045 | #ifdef TAINT | |
1046 | if (euid != uid || egid != gid) | |
1047 | fatal("No -D allowed in setuid scripts"); | |
1048 | #endif | |
1049 | debug = atoi(s+1); | |
1050 | #else | |
1051 | warn("Recompile perl with -DDEBUGGING to use -D switch\n"); | |
1052 | #endif | |
1053 | break; | |
1054 | case 'i': | |
1055 | inplace = savestr(s+1); | |
1056 | for (s = inplace; *s && !isspace(*s); s++) ; | |
1057 | *s = '\0'; | |
1058 | argvoutstab = stabent("ARGVOUT",TRUE); | |
1059 | break; | |
1060 | case 'I': | |
1061 | #ifdef TAINT | |
1062 | if (euid != uid || egid != gid) | |
1063 | fatal("No -I allowed in setuid scripts"); | |
1064 | #endif | |
1065 | if (*++s) { | |
1066 | (void)apush(stab_array(incstab),str_make(s,0)); | |
1067 | } | |
1068 | else | |
1069 | fatal("No space allowed after -I"); | |
1070 | break; | |
1071 | case 'n': | |
1072 | minus_n = TRUE; | |
1073 | s++; | |
1074 | return s; | |
1075 | case 'p': | |
1076 | minus_p = TRUE; | |
1077 | s++; | |
1078 | return s; | |
1079 | case 'u': | |
1080 | do_undump = TRUE; | |
1081 | s++; | |
1082 | return s; | |
1083 | case 'U': | |
1084 | unsafe = TRUE; | |
1085 | s++; | |
1086 | return s; | |
1087 | case 'v': | |
20188a90 | 1088 | fputs("\nThis is perl, version 3.0\n\n",stdout); |
33b78306 LW |
1089 | fputs(rcsid,stdout); |
1090 | fputs("\nCopyright (c) 1989, 1990, Larry Wall\n",stdout); | |
1091 | #ifdef MSDOS | |
1092 | fputs("MS-DOS port Copyright (c) 1989, 1990, Diomidis Spinellis\n", | |
1093 | stdout); | |
20188a90 LW |
1094 | #ifdef OS2 |
1095 | fputs("OS/2 port Copyright (c) 1990, Raymond Chen, Kai Uwe Rommel\n", | |
1096 | stdout); | |
1097 | #endif | |
33b78306 LW |
1098 | #endif |
1099 | fputs("\n\ | |
1100 | Perl may be copied only under the terms of the GNU General Public License,\n\ | |
1101 | a copy of which can be found with the Perl 3.0 distribution kit.\n",stdout); | |
20188a90 LW |
1102 | #ifdef MSDOS |
1103 | usage(origargv[0]); | |
1104 | #endif | |
33b78306 LW |
1105 | exit(0); |
1106 | case 'w': | |
1107 | dowarn = TRUE; | |
1108 | s++; | |
1109 | return s; | |
1110 | case ' ': | |
1111 | case '\n': | |
1112 | case '\t': | |
1113 | break; | |
1114 | default: | |
1115 | fatal("Switch meaningless after -x: -%s",s); | |
1116 | } | |
1117 | return Nullch; | |
1118 | } | |
34de22dd LW |
1119 | |
1120 | /* compliments of Tom Christiansen */ | |
1121 | ||
1122 | /* unexec() can be found in the Gnu emacs distribution */ | |
1123 | ||
1124 | my_unexec() | |
1125 | { | |
1126 | #ifdef UNEXEC | |
1127 | int status; | |
1128 | extern int etext; | |
1129 | static char dumpname[BUFSIZ]; | |
1130 | static char perlpath[256]; | |
1131 | ||
1132 | sprintf (dumpname, "%s.perldump", origfilename); | |
1133 | sprintf (perlpath, "%s/perl", BIN); | |
1134 | ||
1135 | status = unexec(dumpname, perlpath, &etext, sbrk(0), 0); | |
1136 | if (status) | |
1137 | fprintf(stderr, "unexec of %s into %s failed!\n", perlpath, dumpname); | |
1138 | exit(status); | |
1139 | #else | |
1140 | abort(); /* for use with undump */ | |
1141 | #endif | |
1142 | } | |
1143 |