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879 Commits

Author SHA1 Message Date
Rasmus Wriedt Larsen
7eb4419342 Python: Restrict type-tracking content to only be precise 
At least for now :)
 2024-03-15 10:24:57 +01:00
Rasmus Wriedt Larsen
6babb2ff90 Python: Accept .expected for typetracking-summaries 2024-03-15 10:24:33 +01:00
Rasmus Wriedt Larsen
7a3ee0f5f8 Python: Make IterableSequenceNode LocalSourceNode 
We do this to remove the inconsistencies, and to be ready for a future
where type-tracking support content tracker of depth > 1.

It works because targets of loadSteps needs to be LocalSourceNodes

predicate loadStep(Node nodeFrom, LocalSourceNode nodeTo, Content content) {
 2024-03-14 10:46:29 +01:00
Rasmus Wriedt Larsen
6ffaad1bc8 Python: Expand type-tracking tests with nested tuples 
I was initially surprised to see that this didn't work, until I
remembered that type-tracking only works with content of depth 1.
 2024-03-14 10:44:25 +01:00
Rasmus Wriedt Larsen
7de304bf16 Python: Add proper type-tracking tests for content 
Instead of just relying on the call-graph tests
 2024-03-14 10:43:28 +01:00
Rasmus Lerchedahl Petersen
6d8d106d91 Python: add test for ReturnValue.TupleElement[n] 2024-03-08 11:18:51 +01:00
Rasmus Wriedt Larsen
16cb6c2044 Python: Fix validTest expectations 
Co-authored-by: yoff <lerchedahl@gmail.com>
 2024-03-04 11:41:47 +01:00
Rasmus Wriedt Larsen
eeda4355f1 Python: Fix missing DictionaryElementContent 2024-03-01 15:21:13 +01:00
Rasmus Wriedt Larsen
30b7fadbb8 Python: Add test 2024-03-01 15:19:56 +01:00
Rasmus Wriedt Larsen
cdf4dd16f0 Python: Fix module level flow for iterable unpacking 
(and for * patterns in match)

Since `PhaseDependentFlow` uses the following predicate, that relies on
.getScope() to be present for there to be any importTimeFlow (flow at
toplevel scope), it's important that data-flow nodes implement `.getScope`.

```
private predicate isTopLevel(Node node) { node.getScope() instanceof Module }
```

By implementing getScope, we can now rely on default implementation of
`getEnclosingCallable` in DataFlow::Node:

```
  /** Gets the enclosing callable of this node. */
  DataFlowCallable getEnclosingCallable() { result = getCallableScope(this.getScope()) }
```
 2024-02-28 16:39:08 +01:00
Rasmus Wriedt Larsen
e4699e092d Python: Add test for iterable unpacking on module level 
Currently doesn't work :O
 2024-02-28 16:10:29 +01:00
Anders Schack-Mulligen
088a0a54ba Python: Add empty provenance column to expected files. 2024-02-09 11:32:08 +01:00
erik-krogh
8be7eadace delete outdated deprecations 2024-01-22 09:11:35 +01:00
Rasmus Lerchedahl Petersen
da4aef80e9 Revert "Python: make it a real consistency check" 
This reverts commit 45411f4a93.
 2023-12-20 16:15:17 +01:00
Rasmus Lerchedahl Petersen
d039ceb689 Python: add test for fields 2023-12-20 15:23:45 +01:00
Rasmus Lerchedahl Petersen
706e9dc896 Python: fix compilation 2023-12-20 15:23:33 +01:00
Rasmus Lerchedahl Petersen
45411f4a93 Python: make it a real consistency check 2023-12-20 14:53:37 +01:00
Rasmus Lerchedahl Petersen
f8417b0dd8 Merge branch 'main' of https://github.com/github/codeql into python/captured-variables-basic 2023-12-20 13:16:42 +01:00
Rasmus Lerchedahl Petersen
169d7a3c98 Python: Add scope entry definition nodes 
otherwise we confuse captured variables
in the single scope entry cfg node. Now
we have one for each defined variable.
 2023-12-20 12:09:00 +01:00
yoff
a60c52b8b7 Merge branch 'main' into python/captured-variables-basic 2023-12-18 23:44:46 +01:00
Rasmus Lerchedahl Petersen
78c484faab Python: remove support for capturing callbacks 
This will be added in a follow-up PR instead.
 2023-12-18 23:24:57 +01:00
Rasmus Lerchedahl Petersen
64655a0ea8 Python: Use enw class name 2023-12-16 01:36:46 +01:00
Rasmus Lerchedahl Petersen
1ee11ae7af Merge branch 'main' of https://github.com/github/codeql into python/captured-variables-basic 2023-12-15 14:31:57 +01:00
Tom Hvitved
3b1146bf98 Python: Adopt shared type tracking library 2023-12-14 13:22:44 +01:00
Tom Hvitved
c8b4a215bc Merge pull request #14573 from hvitved/flow-summary-impl-param 
Move `FlowSummaryImpl.qll` to `dataflow` pack
 2023-12-14 12:24:15 +01:00
Rasmus Lerchedahl Petersen
479d81fb75 Python: fix nonlocal captured variables 
This depends on the extractor fix
 2023-12-14 10:37:27 +01:00
Rasmus Lerchedahl Petersen
17a0029585 Python: support callbacks to library calls 
TODO:
The member predicate `LibraryLambdaMethod::getACall` is
currently too permissive.
Ideally, we would have `libraryCallHasLambdaArg`
as in Ruby. But even a more precise
`libraryCall` predicate might be fine.
 2023-12-14 10:27:15 +01:00
Rasmus Lerchedahl Petersen
7565873e83 Python: test callbacks to library calls 2023-12-14 10:27:15 +01:00
Rasmus Lerchedahl Petersen
797deebcdd Python: exclude CaptureNodes 2023-12-14 10:27:15 +01:00
Rasmus Lerchedahl Petersen
c054ba6a97 python: instantiate module for variable capture 
This provides variable capture in standard situations:
- nested functions
- lambdas
There are some deficiencies:
- we do not yet handle objects capturing variables.
- we do not handle variables captured via the `nonlocal` keyword.
  This should be solved at the AST level, though, and then it
  should "just work".

There are still inconsistencies in the case where
a `SynthesizedCaptureNode` has a comprehensions
as its enclosing callable. In this case,
`TFunction(cn.getEnclosingCallable())` is not
defined and so getEnclosingCallable does not exist
for the `CaptureNode`.
 2023-12-14 10:25:39 +01:00
Rasmus Lerchedahl Petersen
6db55cd12f Python: add missing annotation 2023-12-14 10:20:49 +01:00
Rasmus Wriedt Larsen
419130be21 Merge pull request #15030 from yoff/python/remove-module-entry-definitions 
Python: Remove control flow nodes for module entry definitions from the dataflow graph.
 2023-12-11 11:40:17 +01:00
Tom Hvitved
faaa558ed9 Python: Use FlowSummaryImpl from dataflow pack 2023-12-10 11:25:44 +01:00
Anders Schack-Mulligen
64eb4ff753 Merge pull request #14983 from aschackmull/dataflow/deprecate-old-api 
Data Flow: Deprecate old data flow api.
 2023-12-08 14:27:25 +01:00
Rasmus Lerchedahl Petersen
263c0aade7 Python: adjust test expectations 
mostly removing of nodes from the graph.
One result lost:
```
check("submodule.submodule_attr", submodule.submodule_attr, "submodule_attr", globals()) #$ MISSING:prints=submodule_attr
```
 2023-12-06 23:00:51 +01:00
Rasmus Lerchedahl Petersen
9e1c818db6 Python: address review comments 2023-12-04 17:49:26 +01:00
yoff
f5c176bd12 Apply suggestions from code review 
Co-authored-by: Taus <tausbn@github.com>
 2023-12-04 17:41:00 +01:00
Rasmus Wriedt Larsen
c952f6a648 Python: Update rest of tests to new dataflow lib 
I had missed these originally, since I had just fixed the ones that were
highlighted in the actions logs, thinking they had covered everything :(
 2023-12-04 14:49:40 +01:00
Rasmus Lerchedahl Petersen
e091ae84ab Merge branch 'main' of https://github.com/github/codeql into python/remove-ssa-nodes-from-dataflow-graph 2023-12-04 14:05:40 +01:00
Rasmus Wriedt Larsen
2fed0adde7 Merge pull request #8457 from RasmusWL/add-dataflow-consistency-query 
Python: Add dataflow consistency query
 2023-12-04 12:50:46 +01:00
Rasmus Wriedt Larsen
4dd3ea3798 Python: Update tests to new dataflow lib 
Avoids some deprecation warnings :)
 2023-12-04 12:36:57 +01:00
Rasmus Wriedt Larsen
3c82653b63 Python: Highlight missing post-update flow for *args and **kwargs 2023-11-28 10:59:48 +01:00
Rasmus Wriedt Larsen
d056706af5 Merge pull request #14725 from RasmusWL/re-modeling 
Python: Add taint-flow modeling for `re` module
 2023-11-23 11:35:36 +01:00
Rasmus Wriedt Larsen
30891ca4aa Merge pull request #14861 from yoff/python/demonstrate-def-use-explosion 
Python: test demonstrating the need for phi nodes
 2023-11-22 09:57:10 +01:00
yoff
4785048076 Apply suggestions from code review 
Co-authored-by: Rasmus Wriedt Larsen <rasmuswriedtlarsen@gmail.com>
 2023-11-22 09:29:07 +01:00
Rasmus Lerchedahl Petersen
d288c4a709 Python: rename folder 2023-11-21 16:48:41 +01:00
yoff
4f7fde7b87 Merge pull request #14858 from yoff/python/demonstrate-use-use-explosion 
Python: Test demonstrating the need for phi-read-nodes
 2023-11-21 16:44:11 +01:00
Rasmus Lerchedahl Petersen
c552bc5eb1 Python: fix test output 2023-11-21 15:48:22 +01:00
Rasmus Lerchedahl Petersen
077e51c6c6 Python: fix test output 2023-11-21 15:47:18 +01:00
Rasmus Lerchedahl Petersen
4857960f72 Python: test demonstrating the need for phi nodes 
or a dataflow node playing that role, at least.
 2023-11-21 15:40:05 +01:00