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Fixed segfault because of out-of-bounds access to a vector, changed index operator to at() to prevent similar problems in future

This commit is contained in:
codedokode 2018-08-12 01:15:53 +03:00
parent 45b752b130
commit b06aeb812d
1 changed files with 26 additions and 16 deletions
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42
XKeyboard.cpp
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@ -122,6 +122,7 @@ Bool XKeyboard::initializeXkb()
_groupNames.push_back("");
} else {
groupName = groupNameC;
// Remove everything after a brace, e.g. "English(US)" -> "English"
std::string::size_type pos = groupName.find('(', 0);
if (pos != std::string::npos) {
groupName = groupName.substr(0, pos - 1);
@ -147,25 +148,34 @@ Bool XKeyboard::initializeXkb()
}
XkbSymbolParser symParser;
// Parser is supposed to extract layout symbols (like us, de, ru)
// and variants (like dvorak) from symName string. But sometimes
// it gets nothing, for example on my system with Xwayland symName
// is "(unnamed)" and both _symbolNames and _variantNames are empty.
symParser.parse(symName, _symbolNames, _variantNames);
int count = _symbolNames.size();
if (count == 1 && _groupNames[0].empty() && _symbolNames[0] == "jp") {
int symNameCount = _symbolNames.size();
if (symNameCount == 1 && _groupNames[0].empty() && _symbolNames[0] == "jp") {
_groupCount = 2;
_symbolNames.resize(_groupCount);
_groupNames.resize(_groupCount);
_symbolNames[1] = _symbolNames[0];
_symbolNames[0] = "us";
_groupNames[0] = "US/ASCII";
_groupNames[1] = "Japanese";
} else {
if (count < _groupCount) {
int j = count;
int k = _groupCount;
while (--j >= 0) _symbolNames[--k] = _symbolNames[j];
while (--k >= 0) _symbolNames[k] = "en_US";
// If there are less symbol names, than groups,
// fill remaining with default name of "en_US".
if (symNameCount < _groupCount) {
while (_symbolNames.size() < (size_t)_groupCount) {
_symbolNames.insert(_symbolNames.begin(), "en_US");
}
}
}
count = _groupNames.size();
for (int i = 0; i < count; i++) {
int groupNameCount = _groupNames.size();
for (int i = 0; i < groupNameCount; i++) {
if (_groupNames[i].empty()) {
std::string name = getSymbolNameByResNum(i);
if (name.empty()) {
@ -186,12 +196,12 @@ Bool XKeyboard::initializeXkb()
std::string XKeyboard::getSymbolNameByResNum(int groupResNum)
{
return _symbolNames[groupNumResToXkb(groupResNum)];
return _symbolNames.at(groupNumResToXkb(groupResNum));
}
std::string XKeyboard::getGroupNameByResNum(int groupResNum)
{
return _groupNames[groupNumResToXkb(groupResNum)];
return _groupNames.at(groupNumResToXkb(groupResNum));
}
int XKeyboard::groupNumResToXkb(int groupResNum)
@ -201,13 +211,13 @@ int XKeyboard::groupNumResToXkb(int groupResNum)
int XKeyboard::groupLookup(int srcValue, StringVector fromText, StringVector toText, int count)
{
const std::string srcText = fromText[srcValue];
const std::string srcText = fromText.at(srcValue);
if (!srcText.empty()) {
std::string targetText;
for (int i = 0; i < count; i++) {
targetText = toText[i];
targetText = toText.at(i);
if (compareNoCase(srcText, targetText) == 0) {
srcValue = i;
break;
@ -261,17 +271,17 @@ int XKeyboard::currentGroupNum() const
std::string XKeyboard::currentGroupName() const
{
return _groupNames[currentGroupNum()];
return _groupNames.at(currentGroupNum());
}
std::string XKeyboard::currentGroupSymbol() const
{
return _symbolNames[currentGroupNum()];
return _symbolNames.at(currentGroupNum());
}
std::string XKeyboard::currentGroupVariant() const
{
return _variantNames[currentGroupNum()];
return _variantNames.at(currentGroupNum());
}
bool XKeyboard::setGroupByNum(int groupNum)