| Commit | Line | Data |
|---|
| a0d0e21e |
1 | /* |
| 2 | * "...we will have peace, when you and all your works have perished--and |
| 3 | * the works of your dark master to whom you would deliver us. You are a |
| 4 | * liar, Saruman, and a corrupter of men's hearts." --Theoden |
| 5 | */ |
| 6 | |
| 463ee0b2 |
7 | #include "EXTERN.h" |
| 8 | #include "perl.h" |
| 9 | |
| 10 | void |
| 8ac85365 |
11 | taint_proper(const char *f, char *s) |
| 79072805 |
12 | { |
| aeea060c |
13 | dTHR; /* just for taint */ |
| bbce6d69 |
14 | char *ug; |
| 15 | |
| fb73857a |
16 | DEBUG_u(PerlIO_printf(Perl_debug_log, |
| 1e422769 |
17 | "%s %d %d %d\n", s, tainted, uid, euid)); |
| 18 | |
| bbce6d69 |
19 | if (tainted) { |
| bbce6d69 |
20 | if (euid != uid) |
| 21 | ug = " while running setuid"; |
| 22 | else if (egid != gid) |
| 23 | ug = " while running setgid"; |
| 24 | else |
| 25 | ug = " while running with -T switch"; |
| 26 | if (!unsafe) |
| 27 | croak(f, s, ug); |
| 28 | else if (dowarn) |
| 29 | warn(f, s, ug); |
| 79072805 |
30 | } |
| 31 | } |
| 32 | |
| 33 | void |
| 8ac85365 |
34 | taint_env(void) |
| 79072805 |
35 | { |
| 36 | SV** svp; |
| 7bac28a0 |
37 | MAGIC* mg; |
| 38 | char** e; |
| 39 | static char* misc_env[] = { |
| 40 | "IFS", /* most shells' inter-field separators */ |
| c90c0ff4 |
41 | "CDPATH", /* ksh dain bramage #1 */ |
| 42 | "ENV", /* ksh dain bramage #2 */ |
| 43 | "BASH_ENV", /* bash dain bramage -- I guess it's contagious */ |
| 7bac28a0 |
44 | NULL |
| 45 | }; |
| 1e422769 |
46 | |
| 47 | #ifdef VMS |
| 48 | int i = 0; |
| 0dc443ab |
49 | char name[10 + TYPE_DIGITS(int)] = "DCL$PATH"; |
| 1e422769 |
50 | |
| 51 | while (1) { |
| 52 | if (i) |
| 53 | (void)sprintf(name,"DCL$PATH;%d", i); |
| 54 | svp = hv_fetch(GvHVn(envgv), name, strlen(name), FALSE); |
| 55 | if (!svp || *svp == &sv_undef) |
| 56 | break; |
| 57 | if (SvTAINTED(*svp)) { |
| 61bb5906 |
58 | dTHR; |
| 1e422769 |
59 | TAINT; |
| 60 | taint_proper("Insecure %s%s", "$ENV{DCL$PATH}"); |
| 61 | } |
| 62 | if ((mg = mg_find(*svp, 'e')) && MgTAINTEDDIR(mg)) { |
| 61bb5906 |
63 | dTHR; |
| 1e422769 |
64 | TAINT; |
| 65 | taint_proper("Insecure directory in %s%s", "$ENV{DCL$PATH}"); |
| 66 | } |
| 67 | i++; |
| 68 | } |
| 69 | #endif /* VMS */ |
| 79072805 |
70 | |
| bbce6d69 |
71 | svp = hv_fetch(GvHVn(envgv),"PATH",4,FALSE); |
| 1e422769 |
72 | if (svp && *svp) { |
| 73 | if (SvTAINTED(*svp)) { |
| aeea060c |
74 | dTHR; |
| 1e422769 |
75 | TAINT; |
| bbce6d69 |
76 | taint_proper("Insecure %s%s", "$ENV{PATH}"); |
| 1e422769 |
77 | } |
| 78 | if ((mg = mg_find(*svp, 'e')) && MgTAINTEDDIR(mg)) { |
| aeea060c |
79 | dTHR; |
| 1e422769 |
80 | TAINT; |
| 81 | taint_proper("Insecure directory in %s%s", "$ENV{PATH}"); |
| 82 | } |
| 79072805 |
83 | } |
| 79072805 |
84 | |
| c90c0ff4 |
85 | #ifndef VMS |
| 86 | /* tainted $TERM is okay if it contains no metachars */ |
| 87 | svp = hv_fetch(GvHVn(envgv),"TERM",4,FALSE); |
| 88 | if (svp && *svp && SvTAINTED(*svp)) { |
| aeea060c |
89 | dTHR; /* just for taint */ |
| c90c0ff4 |
90 | bool was_tainted = tainted; |
| 91 | char *t = SvPV(*svp, na); |
| 92 | char *e = t + na; |
| 93 | tainted = was_tainted; |
| 94 | if (t < e && isALNUM(*t)) |
| 95 | t++; |
| 96 | while (t < e && (isALNUM(*t) || *t == '-' || *t == ':')) |
| 97 | t++; |
| 98 | if (t < e) { |
| 99 | TAINT; |
| 100 | taint_proper("Insecure $ENV{%s}%s", "TERM"); |
| 101 | } |
| 102 | } |
| 103 | #endif /* !VMS */ |
| 104 | |
| 7bac28a0 |
105 | for (e = misc_env; *e; e++) { |
| 106 | svp = hv_fetch(GvHVn(envgv), *e, strlen(*e), FALSE); |
| 107 | if (svp && *svp != &sv_undef && SvTAINTED(*svp)) { |
| aeea060c |
108 | dTHR; /* just for taint */ |
| 7bac28a0 |
109 | TAINT; |
| 110 | taint_proper("Insecure $ENV{%s}%s", *e); |
| 111 | } |
| bbce6d69 |
112 | } |
| 113 | } |
projects / p5sagit/p5-mst-13.2.git / blame