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make sure the user does not request a layer by index greater than exists in the dataset

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This commit is contained in:
Dane Springmeyer 2010-08-20 21:59:48 +00:00
parent e6f75a4741
commit 1d7afcec89
1 changed files with 10 additions and 0 deletions
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10
plugins/input/ogr/ogr_datasource.cpp
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@ -103,6 +103,16 @@ ogr_datasource::ogr_datasource(parameters const& params)
} }
else if (layer_by_index) else if (layer_by_index)
{ {
unsigned num_layers = dataset_->GetLayerCount();
if (*layer_by_index >= num_layers)
{
std::ostringstream s;
s << "OGR Plugin: only ";
s << num_layers;
s << " layer(s) exist, cannot find layer by index '" << *layer_by_index << "'";
throw datasource_exception(s.str());
}
OGRLayer *ogr_layer = dataset_->GetLayer(*layer_by_index); OGRLayer *ogr_layer = dataset_->GetLayer(*layer_by_index);
if (ogr_layer) if (ogr_layer)
{ {