storm/w3m
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Prevent overflow beyond the end of string for wtf to wcs macros

Browse Source 
Bug-Debian: https://github.com/tats/w3m/issues/77
This commit is contained in:
Tatsuya Kinoshita
2016-12-10 17:10:17 +09:00
parent e0efc127ff
commit b4d27ba5cc
1 changed files with 4 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
libwc/wtf.c
View File

@@ -167,15 +167,17 @@ wtf_type(wc_uchar *p)
((p)[3] = (((c) >> 7) & 0x7f) | 0x80), \
((p)[4] = ( (c) & 0x7f) | 0x80)
#define wtf_to_wcs16(p) \
(strlen(p) < 3 ? 0 : \
((wc_uint32)((p)[0] & 0x03) << 14) \
| ((wc_uint32)((p)[1] & 0x7f) << 7) \
| ((wc_uint32)((p)[2] & 0x7f) )
| ((wc_uint32)((p)[2] & 0x7f) ))
#define wtf_to_wcs32(p) \
(strlen(p) < 5 ? 0 : \
((wc_uint32)((p)[0] & 0x0f) << 28) \
| ((wc_uint32)((p)[1] & 0x7f) << 21) \
| ((wc_uint32)((p)[2] & 0x7f) << 14) \
| ((wc_uint32)((p)[3] & 0x7f) << 7) \
| ((wc_uint32)((p)[4] & 0x7f) )
| ((wc_uint32)((p)[4] & 0x7f) ))
void
wtf_push(Str os, wc_ccs ccs, wc_uint32 code)