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fixed a mess of out of bounds string accesses

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Change-Id: I800840e1b3c0d97a049b3ceba0ec244365dc8e6b
This commit is contained in:
Eike Rathke
2013-04-22 23:06:50 +02:00
parent dfcbc1e1af
commit 5cd4300f7f
1 changed files with 40 additions and 23 deletions
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63
svl/source/numbers/zformat.cxx
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@@ -1416,6 +1416,21 @@ SvNumberformat::LocaleType SvNumberformat::ImpGetLocaleType(const OUString& rStr
return (cToken == ']' || nPos == nLen) ? LocaleType(nNum) : LocaleType();
}
static bool lcl_matchKeywordAndGetNumber( const OUString & rString, const sal_Int32 nPos,
const OUString & rKeyword, sal_Int32 & nNumber )
{
if (0 <= nPos && nPos + rKeyword.getLength() < rString.getLength() && rString.matchIgnoreAsciiCase( rKeyword, nPos))
{
nNumber = rString.copy( nPos + rKeyword.getLength()).toInt32();
return true;
}
else
{
nNumber = 0;
return false;
}
}
short SvNumberformat::ImpNextSymbol(OUStringBuffer& rString,
sal_Int32& nPos,
OUString& sSymbol)
@@ -1518,45 +1533,47 @@ short SvNumberformat::ImpNextSymbol(OUStringBuffer& rString,
{
const OUString aNatNum("NATNUM");
const OUString aDBNum("DBNUM");
OUString aUpperNatNum( rChrCls().uppercase( rString.toString(), nPos-1, aNatNum.getLength() ) );
OUString aUpperDBNum( rChrCls().uppercase( rString.toString(), nPos-1, aDBNum.getLength() ) );
sal_Unicode cUpper = aUpperNatNum[0];
sal_Int32 nNatNumNum = rString.toString().copy( nPos - 1 + aNatNum.getLength() ).toInt32();
sal_Unicode cDBNum =
nPos - 1 + aDBNum.getLength() < rString.getLength()
? rString[nPos - 1 + aDBNum.getLength()] : 0;
if ( aUpperNatNum == aNatNum && 0 <= nNatNumNum && nNatNumNum <= 19 )
const OUString aBufStr( rString.toString());
sal_Int32 nNatNumNum;
sal_Int32 nDBNum;
if ( lcl_matchKeywordAndGetNumber( aBufStr, nPos-1, aNatNum, nNatNumNum) &&
0 <= nNatNumNum && nNatNumNum <= 19 )
{
sBuffSymbol.stripStart((sal_Unicode)'[');
sBuffSymbol.append( rString.toString().copy( --nPos, aNatNum.getLength()+1 ));
sBuffSymbol.append( aBufStr.copy( --nPos, aNatNum.getLength()+1 ));
nPos += aNatNum.getLength()+1;
//! SymbolType is negative
eSymbolType = (short) (BRACKET_SYMBOLTYPE_NATNUM0 - nNatNumNum);
eState = SsGetPrefix;
}
else if ( aUpperDBNum == aDBNum && '1' <= cDBNum && cDBNum <= '9' )
else if ( lcl_matchKeywordAndGetNumber( aBufStr, nPos-1, aDBNum, nDBNum) &&
'1' <= nDBNum && nDBNum <= '9' )
{
sBuffSymbol.stripStart((sal_Unicode)'[');
sBuffSymbol.append(rString.toString().copy( --nPos, aDBNum.getLength()+1 ));
nPos += aDBNum.getLength()+1;
//! SymbolType is negative
eSymbolType = sal::static_int_cast< short >( BRACKET_SYMBOLTYPE_DBNUM1 - (cDBNum - '1'));
eSymbolType = sal::static_int_cast< short >( BRACKET_SYMBOLTYPE_DBNUM1 - (nDBNum - '1'));
eState = SsGetPrefix;
}
else if (cUpper == rKeywords[NF_KEY_H][0] || // H
cUpper == rKeywords[NF_KEY_MI][0] || // M
cUpper == rKeywords[NF_KEY_S][0] ) // S
{
sBuffSymbol.append(cToken);
eState = SsGetTime;
cLetter = cToken;
}
else
{
sBuffSymbol.stripStart((sal_Unicode)'[');
sBuffSymbol.append(cToken);
eSymbolType = BRACKET_SYMBOLTYPE_COLOR;
eState = SsGetPrefix;
sal_Unicode cUpper = rChrCls().uppercase( aBufStr, nPos-1, 1)[0];
if ( cUpper == rKeywords[NF_KEY_H][0] || // H
cUpper == rKeywords[NF_KEY_MI][0] || // M
cUpper == rKeywords[NF_KEY_S][0] ) // S
{
sBuffSymbol.append(cToken);
eState = SsGetTime;
cLetter = cToken;
}
else
{
sBuffSymbol.stripStart((sal_Unicode)'[');
sBuffSymbol.append(cToken);
eSymbolType = BRACKET_SYMBOLTYPE_COLOR;
eState = SsGetPrefix;
}
}
}
}