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Merge pull request #445 from AdamMajer/fix_buffer_overflow

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Fix static buffer overrrun (issue #443)
This commit is contained in:
Geoff McLane 2016-08-04 15:50:57 +02:00 committed by GitHub
parent 09caae3b9c 50557a4f63
commit edafefb303
1 changed files with 11 additions and 11 deletions
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22
src/language.c
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@ -601,7 +601,6 @@ tmbstr tidyNormalizedLocaleName( ctmbstr locale )
uint i;
uint len;
static char result[6] = "xx_yy";
char character[1];
tmbstr search = strdup(locale);
search = TY_(tmbstrtolower)(search);
@ -622,27 +621,28 @@ tmbstr tidyNormalizedLocaleName( ctmbstr locale )
junk language that doesn't exist and won't be set. */
len = strlen( search );
len = len <= 5 ? len : 5;
len = ( len <= 5 ? len : 5 );
for ( i = 0; i <= len; i++ )
for ( i = 0; i < len; i++ )
{
if ( i == 2 )
{
/* Either terminate the string or ensure there's an underscore */
if (strlen( search) >= 5)
character[0] = '_';
else
character[0] = '\0';
strncpy( result + i, character, 1 );
if (len == 5) {
result[i] = '_';
}
else {
result[i] = '\0';
break; /* no need to copy after null */
}
}
else
{
strncpy( result + i, search + i, 1);
result[i] = tolower( result[i] );
result[i] = tolower( search[i] );
}
}
if ( search ) free( search );
free( search );
return result;
}