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Java: Change extension point to use a unit type.

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This commit is contained in:
Anders Schack-Mulligen
2019-08-29 11:05:45 +02:00
parent ef0c6d01eb
commit ae98d4fd8e
1 changed files with 12 additions and 5 deletions
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17
java/ql/src/semmle/code/java/dataflow/internal/TaintTrackingUtil.qll
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@@ -40,17 +40,24 @@ predicate localAdditionalTaintStep(DataFlow::Node src, DataFlow::Node sink) {
)
}
private newtype TUnit = TMkUnit()
class Unit extends TUnit {
string toString() { result = "unit" }
}
/**
* A `DataFlow::Node` that is the origin of a taint step.
* A unit class for adding additional taint steps.
*
* Extend this class to add additional taint steps that should apply to all
* taint configurations.
*/
abstract class AdditionalTaintStepNode extends DataFlow::Node {
class AdditionalTaintStep extends Unit {
/**
* Gets a `DataFlow::Node` that this node can step to in one taint step.
* Holds if the step from `node1` to `node2` should be considered a taint
* step for all configurations.
*/
abstract DataFlow::Node step();
abstract predicate step(DataFlow::Node node1, DataFlow::Node node2);
}
/**
@@ -59,7 +66,7 @@ abstract class AdditionalTaintStepNode extends DataFlow::Node {
*/
predicate defaultAdditionalTaintStep(DataFlow::Node src, DataFlow::Node sink) {
localAdditionalTaintStep(src, sink) or
src.(AdditionalTaintStepNode).step() = sink
any(AdditionalTaintStep a).step(src, sink)
}
/**