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Guards: Rename -WithState to Parameterized-.

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This commit is contained in:
Anders Schack-Mulligen
2025-12-09 16:30:07 +01:00
parent ebb989962c
commit 09058e48aa
2 changed files with 21 additions and 22 deletions
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39
shared/controlflow/codeql/controlflow/Guards.qll
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@@ -1283,36 +1283,35 @@ module Make<
signature predicate guardChecksSig(Guard g, Expr e, GuardValue gv);
bindingset[this]
signature class StateSig;
signature class ParamSig;
private module WithState<StateSig State> {
signature predicate guardChecksSig(Guard g, Expr e, GuardValue gv, State state);
private module WithParam<ParamSig P> {
signature predicate guardChecksSig(Guard g, Expr e, GuardValue gv, P par);
}
/**
* Extends a `BarrierGuard` input predicate with wrapped invocations.
*/
module ValidationWrapper<guardChecksSig/3 guardChecks0> {
private predicate guardChecksWithState(Guard g, Expr e, GuardValue gv, Unit state) {
guardChecks0(g, e, gv) and exists(state)
private predicate guardChecksWithParam(Guard g, Expr e, GuardValue gv, Unit par) {
guardChecks0(g, e, gv) and exists(par)
}
private module StatefulWrapper = ValidationWrapperWithState<Unit, guardChecksWithState/4>;
private module ParameterizedWrapper =
ParameterizedValidationWrapper<Unit, guardChecksWithParam/4>;
/**
* Holds if the guard `g` validates the SSA definition `def` upon evaluating to `val`.
*/
predicate guardChecksDef(Guard g, SsaDefinition def, GuardValue val) {
StatefulWrapper::guardChecksDef(g, def, val, _)
ParameterizedWrapper::guardChecksDef(g, def, val, _)
}
}
/**
* Extends a `BarrierGuard` input predicate with wrapped invocations.
*/
module ValidationWrapperWithState<
StateSig State, WithState<State>::guardChecksSig/4 guardChecks0>
{
module ParameterizedValidationWrapper<ParamSig P, WithParam<P>::guardChecksSig/4 guardChecks0> {
private import WrapperGuard
/**
@@ -1321,12 +1320,12 @@ module Make<
* parameter has been validated by the given guard.
*/
private predicate validReturnInValidationWrapper(
ReturnExpr ret, ParameterPosition ppos, GuardValue retval, State state
ReturnExpr ret, ParameterPosition ppos, GuardValue retval, P par
) {
exists(NonOverridableMethod m, SsaParameterInit param, Guard guard, GuardValue val |
m.getAReturnExpr() = ret and
param.getParameter() = m.getParameter(ppos) and
guardChecksDef(guard, param, val, state)
guardChecksDef(guard, param, val, par)
|
guard.valueControls(ret.getBasicBlock(), val) and
relevantReturnExprValue(m, ret, retval)
@@ -1341,7 +1340,7 @@ module Make<
* that the argument has been validated by the given guard.
*/
private NonOverridableMethod validationWrapper(
ParameterPosition ppos, GuardValue retval, State state
ParameterPosition ppos, GuardValue retval, P par
) {
forex(ReturnExpr ret |
result.getAReturnExpr() = ret and
@@ -1350,12 +1349,12 @@ module Make<
disjointValues(notRetval, retval)
)
|
validReturnInValidationWrapper(ret, ppos, retval, state)
validReturnInValidationWrapper(ret, ppos, retval, par)
)
or
exists(SsaParameterInit param, BasicBlock bb, Guard guard, GuardValue val |
param.getParameter() = result.getParameter(ppos) and
guardChecksDef(guard, param, val, state) and
guardChecksDef(guard, param, val, par) and
guard.valueControls(bb, val) and
normalExitBlock(bb) and
retval = TException(false)
@@ -1365,12 +1364,12 @@ module Make<
/**
* Holds if the guard `g` validates the expression `e` upon evaluating to `val`.
*/
private predicate guardChecks(Guard g, Expr e, GuardValue val, State state) {
guardChecks0(g, e, val, state)
private predicate guardChecks(Guard g, Expr e, GuardValue val, P par) {
guardChecks0(g, e, val, par)
or
exists(NonOverridableMethodCall call, ParameterPosition ppos, ArgumentPosition apos |
g = call and
call.getMethod() = validationWrapper(ppos, val, state) and
call.getMethod() = validationWrapper(ppos, val, par) and
call.getArgument(apos) = e and
parameterMatch(pragma[only_bind_out](ppos), pragma[only_bind_out](apos))
)
@@ -1379,9 +1378,9 @@ module Make<
/**
* Holds if the guard `g` validates the SSA definition `def` upon evaluating to `val`.
*/
predicate guardChecksDef(Guard g, SsaDefinition def, GuardValue val, State state) {
predicate guardChecksDef(Guard g, SsaDefinition def, GuardValue val, P par) {
exists(Expr e |
guardChecks(g, e, val, state) and
guardChecks(g, e, val, par) and
guardReadsSsaVar(e, def)
)
}