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583 Commits

Author SHA1 Message Date
Asger F
a522562f93 Merge pull request #9369 from asgerf/python/api-graph-api 
Python: API graph renaming and documentation
 2022-06-28 14:48:12 +02:00
Rasmus Wriedt Larsen
3248f7b423 Merge pull request #9649 from RasmusWL/certificate-modeling 
Python/JS/Ruby: Ignore common words (like certain) as sensitive data source
 2022-06-23 12:04:58 +02:00
Rasmus Wriedt Larsen
4be375521f Python: Handle _ in sensitive-data-sources 2022-06-22 11:05:14 +02:00
Rasmus Wriedt Larsen
4a844312f4 Python: _ in var name not handled by sensitive-data-sources 2022-06-22 11:05:14 +02:00
Rasmus Wriedt Larsen
5dc2bb717a Python: ignore common words (certain/concert) as sensitive source 2022-06-22 11:05:05 +02:00
Rasmus Wriedt Larsen
abdcfd55c3 Python: uncertainty is treated as a certificate :O 2022-06-22 10:16:28 +02:00
Asger F
181a53bd03 Python: Rename getAnImmediateUse -> asSource 2022-06-21 12:44:06 +02:00
Anders Schack-Mulligen
f473a0a961 Python: Deprecate and replace BarrierGuard class. 2022-06-20 15:46:38 +02:00
Tom Hvitved
4f95abc4f6 Python: Update expected test output 2022-05-25 14:39:37 +02:00
Nick Rolfe
2efa38aaa6 Python: fix typos in comments 2022-05-12 16:02:20 +01:00
Rasmus Wriedt Larsen
795adf0566 Python: Fix API::moduleImport("foo.bar") 2022-05-12 13:33:00 +02:00
yoff
1d44694280 Merge pull request #8732 from RasmusWL/dataflow-imports 
Python: Don't re-export `python` under `DataFlow::`
 2022-05-02 12:08:28 +02:00
Taus
231def026f Merge pull request #8890 from tausbn/python-add-global-attribute-writes 
Python: Add support for global attribute writes
 2022-05-02 12:03:41 +02:00
yoff
c67b06b1fd Update python/ql/test/experimental/dataflow/typetracking/attribute_tests.py 
Co-authored-by: Taus <tausbn@github.com>
 2022-05-02 11:36:58 +02:00
Taus
b4a31e572f Python: Add global attribute writes 2022-04-27 16:45:00 +00:00
Taus
f71cf2e1fc Python: Add test 2022-04-27 15:48:11 +00:00
Rasmus Wriedt Larsen
084c8eb22e Python: Don't re-export python under DataFlow:: 2022-04-20 11:42:10 +02:00
Rasmus Wriedt Larsen
5dbbd17bb2 Python: Add test to ensure we keep DataFlow imports clean 
Currently we're not in a good state :(
 2022-04-20 11:41:01 +02:00
Erik Krogh Kristensen
50bfc8eaa0 refactor uses of API::Node::getAUse() that should have been something else 2022-04-07 13:52:13 +02:00
yoff
5efc19c39d Merge pull request #7806 from erik-krogh/pyDef 
Python: Add def nodes to API graphs
 2022-03-28 08:09:14 +02:00
Taus
5a8ba6a7af Python: Fix use of singleton set 2022-03-07 18:59:49 +00:00
yoff
d953382df9 Merge pull request #7807 from RasmusWL/dataflow-improvements 
Python: Dataflow improvements
 2022-02-28 16:24:00 +01:00
Rasmus Wriedt Larsen
0e0f159891 Python: Use Python 3 for investigation tests 
Apparently there are minor differences with `test-6-max-import-depth-2`
where under Python 2 `isfile_no_problem.py` still works as before
 2022-02-28 11:33:31 +01:00
Rasmus Wriedt Larsen
01d426dc58 Python: Replace rest of from testlib import * 
I think we should write our tests in a way that puts points-to in the
best condition to resolve calls. Although this specific change did not
change much, it should help set us up for success in the future 👍
 2022-02-28 10:58:44 +01:00
Rasmus Wriedt Larsen
ead0b658d2 Python: Fix fieldflow tests by increasing max-import-depth 2022-02-28 10:58:44 +01:00
Rasmus Wriedt Larsen
a0d1cea490 Python: Add investigation of field-flow problem 
TL;DR; we used a too low value for `--max-import-depth` :(
 2022-02-28 10:58:44 +01:00
Rasmus Wriedt Larsen
f988e1f0d8 Python: Improve field-flow by removing import * 
Since that apparently impacts call graph resolution with points-to :O

Also interesting that global flow was only not working for those cases
because of the tricky ifs... still need to 100% figure out how those ifs
are messing up the analysis :|
 2022-02-25 16:01:08 +01:00
Rasmus Wriedt Larsen
999af15bd5 Python: Show unresolved calls for field-flow tests 2022-02-25 15:58:07 +01:00
yoff
8b926f6859 Merge pull request #7873 from RasmusWL/fix-attribute-taint 
Python: Fix attribute taint
 2022-02-25 15:02:24 +01:00
Rasmus Wriedt Larsen
2d0034c40d Python: Replicate global field-flow failures 2022-02-25 14:14:00 +01:00
Rasmus Wriedt Larsen
faaa63a73c Python: Ensure no cross-talk in global tests 
By giving all variables unique names

I also added a comment with the function name from the normal tests, so
its' easily visible what these tests are testing
 2022-02-25 13:41:51 +01:00
Rasmus Wriedt Larsen
0642610ee9 Python: Global flow works when in own file??? 
This is very suspicious
 2022-02-25 13:36:00 +01:00
Rasmus Wriedt Larsen
d83a9ef8d3 Python: Fix global field-flow for validTest.py 2022-02-25 13:35:43 +01:00
Rasmus Wriedt Larsen
abe4d8da62 Python: Accept global field-flow inconsistencies 
Yikes
 2022-02-24 15:07:18 +01:00
Rasmus Wriedt Larsen
94d23f3817 Python: Also do all field-flow tests in global scope 
Notice that these tests don't pass, to show how they differ in the next
commit!
 2022-02-24 15:06:40 +01:00
Rasmus Wriedt Larsen
2da4b39844 Python: Add global field-flow tests 
I thought it was interesting that it did not propagate flow to the uses
inside the functions :O
 2022-02-24 13:15:48 +01:00
Rasmus Wriedt Larsen
d2cd77aefb Merge branch 'main' into dataflow-improvements 2022-02-21 14:49:40 +01:00
Rasmus Wriedt Larsen
9d81fd3b95 Python: Improve sanitizer/guards tests 
Based on review conversation
 2022-02-18 14:12:41 +01:00
Rasmus Wriedt Larsen
7aa559f4aa Python: Restore dataflow consistency queries 2022-02-18 13:47:29 +01:00
Rasmus Wriedt Larsen
c5b6fb37b7 Python: Clean up NormalDataflowTest.qll 2022-02-18 13:47:29 +01:00
Rasmus Wriedt Larsen
67ca14876a Python: Apply suggestions from code review 
Co-authored-by: yoff <lerchedahl@gmail.com>
 2022-02-18 13:47:07 +01:00
Rasmus Wriedt Larsen
a8edd44a3c Python: Update .expected 2022-02-08 11:12:34 +01:00
Rasmus Wriedt Larsen
b276b2d48c Python: Clean up taint steps for attributes 2022-02-07 13:12:31 +01:00
Rasmus Wriedt Larsen
59160eeb24 Python: Add test showing taint for attr store 
In `x.arg = TAINTED_STRING` there is a store step to the attribute `arg`
of `x`. In our taint modeling, we allow _any_ store step with the code
below. This means that we also say there is a taint-step directly from
`TAINTED_STRING` to `x` :|

```codeql
  // construction by literal
  // TODO: Not limiting the content argument here feels like a BIG hack, but we currently get nothing for free :|
  DataFlowPrivate::storeStep(nodeFrom, _, nodeTo)
```
 2022-02-07 13:12:28 +01:00
Rasmus Wriedt Larsen
b2ce0fcb72 Python: Add post-update nodes to args of unresolved calls 
Besides solving the problem with `setattr`, it also solved some old
problems with json library modeling (yay).
 2022-02-04 11:51:53 +01:00
Erik Krogh Kristensen
52ca0d168b move API-graph tests out of the experimental test folder 2022-02-03 23:10:37 +01:00
Rasmus Wriedt Larsen
5cd08b8e8c Python: Ignore .isAbsent() from ClassCall 
This means that DataFlowCall is only for resolvable calls, which might not seem
like a big thing in itself, but enables the next commit to actually work :P
 2022-02-03 14:58:30 +01:00
Rasmus Wriedt Larsen
a5c2341204 Python: Add simple test of DataFlowCall 
Notice the strange thing with treating `mypkg.foo(42)` as a ClassCall,
but completely ignoring `mypkg.subpkg.bar(43)` -- due to having the two
`ClassValue`s:

- `Missing module attribute mypkg.foo`
- `Missing module attribute mypkg.subpkg`

But not `Missing module attribute mypkg.subpkg` with the current import
structure.
 2022-02-03 14:58:30 +01:00
Rasmus Wriedt Larsen
49b5d60229 Python: Use AttrRead/AttrWrite for attr read/store steps 
Note that this doesn't actually add the desired flow from setattr, due
to missing post-update note. This will be fixed in later commit.
 2022-02-03 14:58:30 +01:00
Rasmus Wriedt Larsen
5774459dfb Python: restrict AttrRead with AttrNode.isLoad() 2022-02-03 14:58:23 +01:00