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(svn r26050) -Fix: possible, but currently untriggered, out of bounds access in strgen

This commit is contained in:
rubidium 2013-11-22 21:43:47 +00:00
parent 1b924f194f
commit 6f21593bf6
2 changed files with 11 additions and 7 deletions
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15
src/strgen/strgen_base.cpp
View File

@ -387,14 +387,15 @@ void EmitPlural(Buffer *buffer, char *buf, int value)
{
int argidx = _cur_argidx;
int offset = 0;
const char *words[5];
int expected = _plural_forms[_lang.plural_form].plural_count;
const char **words = AllocaM(const char *, max(expected, MAX_PLURALS));
int nw = 0;
/* Parse out the number, if one exists. Otherwise default to prev arg. */
if (!ParseRelNum(&buf, &argidx, &offset)) argidx--;
/* Parse each string */
for (nw = 0; nw < 5; nw++) {
for (nw = 0; nw < MAX_PLURALS; nw++) {
words[nw] = ParseWord(&buf);
if (words[nw] == NULL) break;
}
@ -403,16 +404,16 @@ void EmitPlural(Buffer *buffer, char *buf, int value)
strgen_fatal("%s: No plural words", _cur_ident);
}
if (_plural_forms[_lang.plural_form].plural_count != nw) {
if (expected != nw) {
if (_translated) {
strgen_fatal("%s: Invalid number of plural forms. Expecting %d, found %d.", _cur_ident,
_plural_forms[_lang.plural_form].plural_count, nw);
expected, nw);
} else {
if ((_show_todo & 2) != 0) strgen_warning("'%s' is untranslated. Tweaking english string to allow compilation for plural forms", _cur_ident);
if (nw > _plural_forms[_lang.plural_form].plural_count) {
nw = _plural_forms[_lang.plural_form].plural_count;
if (nw > expected) {
nw = expected;
} else {
for (; nw < _plural_forms[_lang.plural_form].plural_count; nw++) {
for (; nw < expected; nw++) {
words[nw] = words[nw - 1];
}
}

3
src/table/strgen_tables.h
View File

@ -154,6 +154,9 @@ struct PluralForm {
const char *names; ///< Plural names
};
/** The maximum number of plurals. */
static const int MAX_PLURALS = 5;
/** All plural forms used */
static const PluralForm _plural_forms[] = {
{ 2, "Two forms: special case for 1.", "\"1\" \"other\"" },