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| author | Jarkko Hietaniemi <jhi@iki.fi> | 2001-12-01 18:43:11 +0000 |
|---|---|---|
| committer | Jarkko Hietaniemi <jhi@iki.fi> | 2001-12-01 18:43:11 +0000 |
| commit | b27961e54c1afdd795823ec3e61ccca0718baf23 (patch) | |
| tree | 1ce4bf6982b3fd7e0e7b9317914919d38e3d3aa4 /ext/I18N | |
| parent | 7c8d2b2109deeb6d2652b240018487f91c577a6c (diff) | |
| download | perl-b27961e54c1afdd795823ec3e61ccca0718baf23.tar.gz | |
Try to protect against wild langinfo() arguments.
p4raw-id: //depot/perl@13410
Diffstat (limited to 'ext/I18N')
| -rw-r--r-- | ext/I18N/Langinfo/Langinfo.xs | 28 |
1 files changed, 26 insertions, 2 deletions
diff --git a/ext/I18N/Langinfo/Langinfo.xs b/ext/I18N/Langinfo/Langinfo.xs index d335eec71e..314e8918b3 100644 --- a/ext/I18N/Langinfo/Langinfo.xs +++ b/ext/I18N/Langinfo/Langinfo.xs @@ -19,8 +19,32 @@ langinfo(code) int code CODE: #ifdef HAS_NL_LANGINFO - char *s = nl_langinfo(code); - RETVAL = newSVpvn(s, strlen(s)); + char *s; + if (code) { /* bold assumption: all valid langinfo codes > 0 */ +#ifdef _MAXSTRMSG + if (code >= _MAXSTRMSG + RETVAL = &PL_sv_undef; + else +#else +# ifdef _NL_NUM_ITEMS + if (code >= _NL_NUM_ITEMS) + RETVAL = &PL_sv_undef; + else +# else +# ifdef _NL_NUM + if (code >= _NL_NUM) + RETVAL = &PL_sv_undef; + else +# endif +# endif +#endif + { + s = nl_langinfo(code); + RETVAL = newSVpvn(s, strlen(s)); + } + } else { + RETVAL = &PL_sv_undef; + } #else croak("nl_langinfo() not implemented on this architecture"); #endif |