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2936 Commits

Author SHA1 Message Date
Geoffrey White
80997a3323 Merge pull request #2655 from Semmle/jbj-patch-1 
C++: Fix typo in MallocSizeExpr
 2020-01-21 09:44:41 +00:00
Jonas Jensen
cdcd3ed748 Merge pull request #2647 from geoffw0/modelpure 
CPP: Improve strlen model
 2020-01-21 09:42:10 +01:00
Jonas Jensen
0568ed6451 C++: Fix typo in MallocSizeExpr 
The first argument is index 0, not 1.
 2020-01-21 09:09:49 +01:00
Geoffrey White
4f02183dc2 CPP: Re-layout test. 2020-01-20 15:00:09 +00:00
Geoffrey White
2133fbd155 CPP: Fix the nulltermination test. 2020-01-20 14:55:52 +00:00
Geoffrey White
952b9e1581 CPP: Use hasGlobalName where appropriate. 2020-01-20 14:24:38 +00:00
Geoffrey White
79811fcccd Merge pull request #2642 from jbj/TaintTracking-indirection 
C++: Indirection for security.TaintTracking impl
 2020-01-20 12:25:51 +00:00
Geoffrey White
5a20e85598 Merge pull request #2638 from jbj/ir-dispatch 
C++ IR: Support for global virtual dispatch
 2020-01-20 12:04:09 +00:00
Jonas Jensen
391b80eac4 C++: Show virtual inheritance problem in vdispatch 2020-01-20 11:17:44 +01:00
Jonas Jensen
2a0fc31b68 C++: Comment and rename getSrc -> getDispatchValue 
Better clarity was requested in the PR review.
 2020-01-20 11:03:03 +01:00
Jonas Jensen
742bd1c6ad Merge pull request #2648 from rdmarsh2/getMemoryOperandDefinition-perf 
C++: Performance fix for getMemoryOperandDefinition
 2020-01-20 08:49:55 +01:00
Jonas Jensen
d3a1856793 Merge pull request #2646 from geoffw0/modelinet 
CPP: Fix a mistake in Inet.qll.
 2020-01-17 22:53:43 +01:00
Geoffrey White
fcea3693f9 CPP: Remove now redundant special cases. 2020-01-17 18:56:21 +00:00
Geoffrey White
200545d88c CPP: Add detail to the model. 2020-01-17 18:56:21 +00:00
Geoffrey White
77a3778eef CPP: Add some strlen variants to the PureStrFunction model. 2020-01-17 18:56:21 +00:00
Jonas Jensen
3632d51abc Merge pull request #2635 from geoffw0/modelstrdup 
CPP: Model strdup
 2020-01-17 19:26:26 +01:00
Geoffrey White
803da339a1 CPP: Fix a mistake in Inet.qll. 2020-01-17 17:44:42 +00:00
Robert Marsh
bd98427c5a C++: sync files 2020-01-17 08:05:40 -08:00
Robert Marsh
bbf191e857 C++: fix join order in hasMemoryOperandDefinition 2020-01-17 08:05:40 -08:00
Robert Marsh
d91bc4ba72 C++: pull out hasMemoryOperandDefinition (slow) 2020-01-17 08:05:26 -08:00
Dave Bartolomeo
c7e62b4a35 Merge pull request #2613 from rdmarsh2/getPhiOperandDefinition-perf-2 
C++: performance fixes for getPhiOperandDefinition
 2020-01-17 09:01:33 -07:00
Jonas Jensen
53e10e4c7f Merge pull request #2634 from MathiasVP/overrideable-taint-sources 
C++: Overrideable taint sources in DefaultTaintTracking
 2020-01-17 13:01:03 +01:00
Jonas Jensen
d19c77d473 C++: Indirection for security.TaintTracking impl 
This change should make it easier to switch to the IR-based
`DefaultTaintTracking` code without getting a large and conflict-prone
diff.
 2020-01-17 12:04:53 +01:00
Jonas Jensen
5d08a0e338 Merge pull request #2558 from MathiasVP/ast-classes-should-not-be-abstract 
C++: Ast classes should not be abstract
 2020-01-17 08:47:55 +01:00
Geoffrey White
3c41ed56a1 CPP: Support taint to return value derefs instead. 2020-01-16 18:15:21 +00:00
Robert Marsh
e0406190a1 Merge branch 'master' into getPhiOperandDefinition-perf-2 2020-01-16 07:23:59 -08:00
Robert Marsh
c942da524c C++/C#: Sync 2020-01-16 07:16:57 -08:00
Robert Marsh
1b5d33023e C++: actually fix Chi total operands 2020-01-16 07:15:08 -08:00
Jonas Jensen
f4d0c5e905 C++ IR: Support for global virtual dispatch 
The IR data flow library now supports virtual dispatch with a library
that's similar to `security.TaintTracking`. In particular, it should
have the same performance characteristics. The main difference is that
non-recursive callers of `flowsFrom` now pass `_` instead of `true` for
`boolean allowFromArg`. This change allows flow through `return` to
actually work.
 2020-01-16 14:51:28 +01:00
Geoffrey White
ef47563139 CPP: Support flow of pointed-to things through function calls. 2020-01-16 11:08:19 +00:00
Mathias Vorreiter Pedersen
87c59e0017 C++: Overrideable taint sources in DefaultTaintTracking 2020-01-16 11:10:43 +01:00
Mathias Vorreiter Pedersen
603b1c26a7 Merge branch 'master' into ast-classes-should-not-be-abstract 2020-01-16 10:16:03 +01:00
Dave Bartolomeo
48301e1187 Merge pull request #2594 from rdmarsh2/ir-overlappingVariableMemoryLocations 
C++: compute overlap on irvars with vvar indexes
 2020-01-15 13:06:33 -07:00
Geoffrey White
04af2ace94 CPP: Add DataFlow to strdup. 2020-01-15 19:18:37 +00:00
Geoffrey White
9b5be995d2 CPP: Split Strdup model into it's own class and file. 2020-01-15 18:38:33 +00:00
Geoffrey White
ce389ca791 CPP: Add tests for strdup. 2020-01-15 18:26:24 +00:00
Robert Marsh
a91f10fe40 Merge pull request #2629 from dbartol/dbartol/missing-vvars 
C++/C#: Fix missing virtual variables
 2020-01-15 08:32:43 -08:00
Tom Hvitved
f7278d36e1 Merge pull request #2498 from aschackmull/java/taint-getter 
Java/C++/C#: Add support for taint-getter/setter summaries in data flow.
 2020-01-15 09:55:19 +01:00
Dave Bartolomeo
e60f902c36 C++/C#: Fix missing virtual variables 
The aliased SSA code was assuming that, for every automatic variable, there would be at least one memory access that reads or writes the entire variable. We've encountered a couple cases where that isn't true due to extractor issues. As a workaround, we now always create the `VariableMemoryLocation` for every local variable.

I've also added a sanity test to detect this condition in the future.

Along the way, I had to fix a perf issue in the PrintIR code. When determining the ID of a result based on line number, we were considering all `Instruction`s generated for a particular line, regardless of whether they were all in the same `IRFunction`. In addition, the predicate had what appeared to be a bad join order that made it take forever on large snapshots. I've scoped it down to just consider `Instruction`s in the same function, and outlined that predicate to fix the join order issue. This causes some numbering changes, but they're for the better. I don't think there was actually any nondeterminism there before, but now the numbering won't depend on the number of instantiations of a template, either.
 2020-01-14 17:57:15 -07:00
Robert Marsh
42be28b211 C++: autoformat 2020-01-14 13:17:57 -08:00
Robert Marsh
5a5832b7de Merge pull request #2569 from jbj/ir-total-chi-flow 
C++: IR data flow through total chi operands
 2020-01-14 12:47:58 -08:00
Anders Schack-Mulligen
241b8a05e4 Java/C++/C#: Address review comment. 2020-01-14 11:59:55 +01:00
Anders Schack-Mulligen
041bcc5812 Java/C++/C#: Small perf improvement and simplification. 2020-01-13 17:00:56 +01:00
Jonas Jensen
b8ee5a63db Merge pull request #2614 from geoffw0/arithun 
CPP: Speed up ArithmeticUncontrolled.ql
 2020-01-13 15:25:12 +01:00
Jonas Jensen
3183893a98 Merge pull request #2530 from geoffw0/hiddenqueries2 
CPP: Speed up nullCheckAssert in InconsistentCheckReturnNull.ql.
 2020-01-13 15:23:55 +01:00
Geoffrey White
9176529799 Merge pull request #2599 from MathiasVP/assign-where-compare-meant-false-positives 
Assign where compare meant false positives
 2020-01-10 13:39:39 +00:00
Mathias Vorreiter Pedersen
111f1dbd19 Merge branch 'assign-where-compare-meant-false-positives' of github.com:MathiasVP/ql into assign-where-compare-meant-false-positives 2020-01-10 13:14:00 +01:00
Mathias Vorreiter Pedersen
f80c13abd7 C++: Fixed incorrect comments in testcases 2020-01-10 12:24:43 +01:00
Mathias Vorreiter Pedersen
f181753c35 Typo fix 
Co-Authored-By: Geoffrey White <40627776+geoffw0@users.noreply.github.com>
 2020-01-10 11:49:03 +01:00
Mathias Vorreiter Pedersen
21c99d1827 Typo fix 
Co-Authored-By: Geoffrey White <40627776+geoffw0@users.noreply.github.com>
 2020-01-10 11:46:14 +01:00