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Merge pull request #7246 from tausbn/python/import-star-flow

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Python: Support flow through `import *`
This commit is contained in:
yoff
2021-12-10 16:34:32 +01:00
committed by GitHub
parent a46787ea07 b871342e83
commit d8857c7ce8
18 changed files with 268 additions and 122 deletions
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2
python/ql/test/experimental/dataflow/global-flow/known.py
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@@ -1 +1 @@
known_attr = [1000]
known_attr = [1000] #$ writes=known_attr

2
python/ql/test/experimental/dataflow/import-star/deux.py Normal file
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@@ -0,0 +1,2 @@
from trois import *
print(foo)

15
python/ql/test/experimental/dataflow/import-star/global.expected Normal file
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| test3.py:1:17:1:19 | ControlFlowNode for ImportMember | test3.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:1:1:3 | ControlFlowNode for foo | test1.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:1:1:3 | ControlFlowNode for foo | test3.py:1:17:1:19 | ControlFlowNode for ImportMember |
| three.py:1:1:1:3 | ControlFlowNode for foo | test3.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:1:1:3 | ControlFlowNode for foo | two.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | test1.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | test3.py:1:17:1:19 | ControlFlowNode for ImportMember |
| three.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | test3.py:2:7:2:9 | ControlFlowNode for foo |
| three.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | two.py:2:7:2:9 | ControlFlowNode for foo |
| trois.py:1:1:1:3 | ControlFlowNode for foo | deux.py:2:7:2:9 | ControlFlowNode for foo |
| trois.py:1:1:1:3 | ControlFlowNode for foo | test2.py:2:7:2:9 | ControlFlowNode for foo |
| trois.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | deux.py:2:7:2:9 | ControlFlowNode for foo |
| trois.py:1:7:1:7 | ControlFlowNode for IntegerLiteral | test2.py:2:7:2:9 | ControlFlowNode for foo |
| two.py:2:7:2:9 | ControlFlowNode for foo | test3.py:1:17:1:19 | ControlFlowNode for ImportMember |
| two.py:2:7:2:9 | ControlFlowNode for foo | test3.py:2:7:2:9 | ControlFlowNode for foo |

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python/ql/test/experimental/dataflow/import-star/global.ql Normal file
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import semmle.python.dataflow.new.DataFlow
/**
* A configuration to find all flows.
* To be used on tiny programs.
*/
class AllFlowsConfig extends DataFlow::Configuration {
AllFlowsConfig() { this = "AllFlowsConfig" }
override predicate isSource(DataFlow::Node node) { any() }
override predicate isSink(DataFlow::Node node) { any() }
}
from DataFlow::CfgNode source, DataFlow::CfgNode sink
where
source != sink and
exists(AllFlowsConfig cfg | cfg.hasFlow(source, sink))
select source, sink

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python/ql/test/experimental/dataflow/import-star/one.py Normal file
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from two import *

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python/ql/test/experimental/dataflow/import-star/test1.py Normal file
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from one import *
print(foo)

2
python/ql/test/experimental/dataflow/import-star/test2.py Normal file
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from un import *
print(foo)

2
python/ql/test/experimental/dataflow/import-star/test3.py Normal file
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from one import foo
print(foo)

1
python/ql/test/experimental/dataflow/import-star/three.py Normal file
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foo = 5

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python/ql/test/experimental/dataflow/import-star/trois.py Normal file
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foo = 6

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python/ql/test/experimental/dataflow/import-star/two.py Normal file
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from three import *
print(foo)

1
python/ql/test/experimental/dataflow/import-star/un.py Normal file
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from deux import *

1
python/ql/test/library-tests/PointsTo/new/ImpliesDataflow.expected
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@@ -15,4 +15,3 @@
| code/r_regressions.py:46:1:46:14 | ControlFlowNode for FunctionExpr | code/r_regressions.py:52:9:52:12 | ControlFlowNode for fail |
| code/t_type.py:3:1:3:16 | ControlFlowNode for ClassExpr | code/t_type.py:6:1:6:9 | ControlFlowNode for type() |
| code/t_type.py:3:1:3:16 | ControlFlowNode for ClassExpr | code/t_type.py:13:5:13:13 | ControlFlowNode for type() |
| code/test_package/module2.py:5:5:5:6 | ControlFlowNode for Dict | code/j_convoluted_imports.py:25:1:25:1 | ControlFlowNode for r |