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Do not load into memory files that are definitely not JSON files

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This commit is contained in:
Martin Tůma 2023-02-14 00:49:41 +01:00
parent 15bc9ac774
commit 4f661128ba
1 changed files with 27 additions and 0 deletions
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27
src/data/geojsonparser.cpp
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@ -104,6 +104,26 @@ static void setWaypointProperties(Waypoint &waypoint,
waypoint.setStyle(PointStyle(color, size));
}
static bool isWS(char c)
{
return (c == 0x20 || c == 0x09 || c == 0x0A || c == 0x0D) ? true : false;
}
static bool isJSONObject(QFile *file)
{
char c;
while (file->getChar(&c)) {
if (isWS(c))
continue;
else if (c == '{')
return true;
else
return false;
}
return false;
}
GeoJSONParser::Type GeoJSONParser::type(const QJsonObject &json)
{
@ -404,6 +424,13 @@ bool GeoJSONParser::parse(QFile *file, QList<TrackData> &tracks,
QList<RouteData> &routes, QList<Area> &areas, QVector<Waypoint> &waypoints)
{
Q_UNUSED(routes);
if (!isJSONObject(file)) {
_errorString = "Not a GeoJSON file";
return false;
} else
file->reset();
QJsonParseError error;
QJsonDocument doc(QJsonDocument::fromJson(file->readAll(), &error));