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- /*
- * "...we will have peace, when you and all your works have perished--and
- * the works of your dark master to whom you would deliver us. You are a
- * liar, Saruman, and a corrupter of men's hearts." --Theoden
- */
-
- #include "EXTERN.h"
- #include "perl.h"
-
- void
- taint_not(s)
- char *s;
- {
- if (euid != uid)
- croak("No %s allowed while running setuid", s);
- if (egid != gid)
- croak("No %s allowed while running setgid", s);
- }
-
- void
- taint_proper(f, s)
- char *f;
- char *s;
- {
- if (tainting) {
- DEBUG_u(fprintf(stderr,"%s %d %d %d\n",s,tainted,uid, euid));
- if (tainted) {
- char *ug = 0;
- if (euid != uid)
- ug = " while running setuid";
- else if (egid != gid)
- ug = " while running setgid";
- else if (tainting)
- ug = " while running with -T switch";
- if (ug) {
- if (!unsafe)
- croak(f, s, ug);
- else if (dowarn)
- warn(f, s, ug);
- }
- }
- }
- }
-
- void
- taint_env()
- {
- SV** svp;
-
- if (tainting) {
- MAGIC *mg = 0;
- svp = hv_fetch(GvHVn(envgv),"PATH",4,FALSE);
- if (!svp || *svp == &sv_undef ||
- ((mg = mg_find(*svp, 't')) && mg->mg_len & 1))
- {
- tainted = TRUE;
- if (mg && MgTAINTEDDIR(mg))
- taint_proper("Insecure directory in %s%s", "$ENV{PATH}");
- else
- taint_proper("Insecure %s%s", "$ENV{PATH}");
- }
- svp = hv_fetch(GvHVn(envgv),"IFS",3,FALSE);
- if (svp && *svp != &sv_undef &&
- (mg = mg_find(*svp, 't')) && mg->mg_len & 1)
- {
- tainted = TRUE;
- taint_proper("Insecure %s%s", "$ENV{IFS}");
- }
- }
- }
-
-