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| /** | ||
| * Provides data-flow modelling of constructor patterns / enum-case constructors. | ||
| */ |
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🟡 Changes recommended
Enum content identity, optional try? flattening, and guard-pattern flow have unresolved correctness issues.
5 open findings
What changed in this PR
Adds unified Swift data flow for enum associated values, operators, array literals, and for-in loops.
Changes:
- Models enum constructor storage and pattern extraction.
- Propagates flow through Swift casts, error-handling, async, and array operations.
- Extends path-injection models and regression coverage.
| File | Description |
|---|---|
unified/ql/test/query-tests/security/CWE-022/PathInjection/testPathInjection.swift |
Updates cast-flow alert annotations. |
unified/ql/test/query-tests/security/CWE-022/PathInjection/PathInjectionTest.expected |
Regenerates path-injection results. |
unified/ql/test/library-tests/dataflow/test.swift |
Adds operator and array-flow tests. |
unified/ql/test/library-tests/dataflow/test.expected |
Regenerates data-flow expectations. |
unified/ql/test/library-tests/dataflow/enums.swift |
Adds enum associated-value tests. |
unified/ql/test/library-tests/dataflow/CONSISTENCY/CfgConsistency.expected |
Records CFG consistency output. |
unified/ql/test/library-tests/controlflow/CONSISTENCY/DataFlowConsistency.expected |
Updates consistency expectations. |
unified/ql/src/queries/security/CWE-022/PathInjection.ql |
Adds flow through path properties. |
unified/ql/lib/ext/legacy-swift.model.yml |
Models one-argument Data(contentsOf:). |
unified/ql/lib/codeql/unified/internal/dataflow/Step.qll |
Adds array-content step helpers. |
unified/ql/lib/codeql/unified/internal/dataflow/DataFlowPluginSwift.qll |
Models Swift operators and casts. |
unified/ql/lib/codeql/unified/internal/dataflow/DataFlowInstantiation.qll |
Hides expression-pattern value nodes. |
unified/ql/lib/codeql/unified/internal/dataflow/DataFlowGraph.qll |
Adds enum, pattern, and array edges. |
unified/ql/lib/codeql/unified/internal/dataflow/Content.qll |
Defines array and enum content keys. |
unified/ql/lib/codeql/unified/internal/dataflow/ConstructorPatterns.qll |
Resolves enum constructor patterns. |
unified/ql/lib/codeql/unified/internal/dataflow/AllDataFlow.qll |
Imports constructor-pattern support. |
unified/ql/consistency-queries/DataFlowConsistency.ql |
Excludes plugin reads from reverse-read checks. |
🧠 Review effort: Balanced
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| predicate isAdditionalFlowStep(DataFlow::Node node1, DataFlow::Node node2) { | ||
| exists(MemberAccessExpr expr | | ||
| expr.getMemberName() = "path" and | ||
| node1.isResultValue(expr.getBase()) and | ||
| node2.isResultValue(expr) |
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I'm OK with this for now
asgerf
marked this pull request as ready for review
October 8, 2026 12:38
Only array literals and for-in statements are handled
Note that one of the annotations were moved because the location we report is different
The data-flow consistency errors are easier to fix once the stage-splitting of TDataFlowNode has merged, which is part of another PR (variable-capture).
Without the 'case' keyword the pattern is implicitly wrapped in .some, which was not the intention here
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The file now passes 'swiftc -typecheck' without errors
This change happened after rebasing onto the SSA changes, which had significant impact for unified data flow
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try,try?,try!,as,as?,as!, andawaitoperators.for..inloops.