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Prevent segfault when iso2022 parsing

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Bug-Debian: https://github.com/tats/w3m/issues/14
This commit is contained in:
Tatsuya Kinoshita
2016-08-17 21:30:50 +09:00
parent 807e8b7fbf
commit 9cf6926c5d
1 changed files with 14 additions and 7 deletions
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21
libwc/iso2022.c
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@@ -405,7 +405,8 @@ wc_push_to_iso2022(Str os, wc_wchar_t cc, wc_status *st)
case WC_CCS_A_CS94:
if (cc.ccs == WC_CCS_US_ASCII)
cc.ccs = st->g0_ccs;
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
break;
case WC_CCS_A_CS94W:
is_wide = 1;
@@ -435,31 +436,37 @@ wc_push_to_iso2022(Str os, wc_wchar_t cc, wc_status *st)
break;
#endif
}
g = cs94w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs94w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
break;
case WC_CCS_A_CS96:
g = cs96_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs96_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
break;
case WC_CCS_A_CS96W:
is_wide = 1;
g = cs96w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs96w_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
break;
case WC_CCS_A_CS942:
g = cs942_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs942_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
break;
case WC_CCS_A_UNKNOWN_W:
if (WcOption.no_replace)
return;
is_wide = 1;
cc.ccs = WC_CCS_US_ASCII;
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
cc.code = ((wc_uint32)WC_REPLACE_W[0] << 8) | WC_REPLACE_W[1];
break;
case WC_CCS_A_UNKNOWN:
if (WcOption.no_replace)
return;
cc.ccs = WC_CCS_US_ASCII;
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
if (WC_CCS_INDEX(cc.ccs) >= WC_F_ISO_BASE)
g = cs94_gmap[WC_CCS_INDEX(cc.ccs) - WC_F_ISO_BASE];
cc.code = (wc_uint32)WC_REPLACE[0];
break;
default: