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JS: Include summary steps in type tracking

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This commit is contained in:
Asger F
2024-11-19 22:18:01 +01:00
parent 440cbb7f0a
commit 2f0c80a98b
2 changed files with 26 additions and 4 deletions
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22
javascript/ql/lib/semmle/javascript/dataflow/internal/StepSummary.qll
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@@ -1,6 +1,7 @@
import javascript
private import semmle.javascript.dataflow.TypeTracking
private import semmle.javascript.internal.CachedStages
private import sharedlib.SummaryTypeTracker as SummaryTypeTracker
private import FlowSteps
cached
@@ -46,6 +47,12 @@ private module Cached {
LoadStoreStep(PropertyName fromProp, PropertyName toProp) {
SharedTypeTrackingStep::loadStoreStep(_, _, fromProp, toProp)
or
exists(DataFlow::ContentSet loadContent, DataFlow::ContentSet storeContent |
SummaryTypeTracker::basicLoadStoreStep(_, _, loadContent, storeContent) and
fromProp = loadContent.asPropertyName() and
toProp = storeContent.asPropertyName()
)
or
summarizedLoadStoreStep(_, _, fromProp, toProp)
} or
WithoutPropStep(PropertySet props) { SharedTypeTrackingStep::withoutPropStep(_, _, props) }
@@ -205,6 +212,21 @@ private module Cached {
succ = getACallbackSource(parameter).getParameter(i) and
summary = ReturnStep()
)
or
SummaryTypeTracker::levelStepNoCall(pred, succ) and summary = LevelStep()
or
exists(DataFlow::ContentSet content |
SummaryTypeTracker::basicLoadStep(pred, succ, content) and
summary = LoadStep(content.asPropertyName())
or
SummaryTypeTracker::basicStoreStep(pred, succ, content) and
summary = StoreStep(content.asPropertyName())
)
or
exists(DataFlow::ContentSet loadContent, DataFlow::ContentSet storeContent |
SummaryTypeTracker::basicLoadStoreStep(pred, succ, loadContent, storeContent) and
summary = LoadStoreStep(loadContent.asPropertyName(), storeContent.asPropertyName())
)
}
}

8
javascript/ql/test/library-tests/TypeTracking2/summaries.js
View File

@@ -6,7 +6,7 @@ function m0() {
function m1() {
const fn = mkSummary("Argument[0]", "ReturnValue");
const obj = source("m1.1");
sink(fn(obj)); // $ MISSING: track=m1.1
sink(fn(obj)); // $ track=m1.1
sink(fn(obj.p));
sink(fn(obj).p);
sink(fn({ p: obj }));
@@ -19,7 +19,7 @@ function m2() {
sink(fn(obj));
sink(fn(obj.p));
sink(fn(obj).p);
sink(fn({ p: obj })); // $ MISSING: track=m2.1
sink(fn({ p: obj })); // $ track=m2.1
sink(fn({ p: obj }).q);
}
@@ -28,7 +28,7 @@ function m3() {
const obj = source("m3.1");
sink(fn(obj));
sink(fn(obj.p));
sink(fn(obj).p); // $ MISSING: track=m3.1
sink(fn(obj).p); // $ track=m3.1
sink(fn({ p: obj }));
sink(fn({ p: obj }).q);
}
@@ -41,5 +41,5 @@ function m4() {
sink(fn(obj.p));
sink(fn(obj).p);
sink(fn({ p: obj }));
sink(fn({ p: obj }).q); // $ MISSING: track=m4.1
sink(fn({ p: obj }).q); // $ track=m4.1
}