Summary:
Right now, taint gets lost if it flows into a constructor or procedure whose implementation is missing.
Since the core Java (e.g., String) and Android classes (e.g, Intent) are among these, this is bad.
We could handle this by writing a bunch of models instead, but that would be a lot of work (plus we may still miss cases).
Reviewed By: jvillard
Differential Revision: D4051591
fbshipit-source-id: 65851c8
Summary: For some reason, the frontend was always caching the name of the translated classes even when the `--dependencies` was not passed
Reviewed By: jberdine
Differential Revision: D4074225
fbshipit-source-id: 8aa2c79
Summary:
Merging the results directories of targets on buck projects involved creating symbolic links into buck-out.
The bulk of files are .attr files: one per procedure. Creating these links can be a bottleneck, and the merge phase can be slower than the analysis phases on projects with many procedures.
This diff introduces multilinks to speed up merge.
A multilink is a file `multilink.txt` containing a sequence of paths
```
path/to/file1.ext
path/to/file2.ext
...
```
A multilink file is a compact way to represent a link for each entry.
This diff creates a multilink file for each `attributes/dir` directory, instead of one symbolic link for each file.
Reviewed By: jberdine
Differential Revision: D4067428
fbshipit-source-id: 911f8a9
Summary: The frontend replaces global variables that are constant with their values as a quick hack to improve the precision of the analysis. This should apply to `constexpr` too.
Reviewed By: dulmarod
Differential Revision: D4058097
fbshipit-source-id: be4fea6
Summary: This diff simplifies the workflow of creating the procedure descriptions. Instead of creating the all procedure descriptions in a first step and translating the method bodies afterwards, it is simpler to translate to do the two in one step.
Reviewed By: cristianoc
Differential Revision: D4067674
fbshipit-source-id: be9e853
Summary: Doing like this makes it easier to keep the phony declarations in sync with the target definitions
Reviewed By: jvillard
Differential Revision: D4067679
fbshipit-source-id: 723bc0e
Summary: Fix the resolution of symbolic links. The previous version did not work if the path itself was not a symbolic link, but there was a symbolic link somewhere up in the path tree. For example: `path/to/file` where `file` is not a symbolic link, but `to` is a symbolic link.
Reviewed By: jberdine
Differential Revision: D4062947
fbshipit-source-id: 394221d
Summary: Creating a "fake" procedure description the methods that are called is no longer required by the backend. So this diff cleans up the creation of the procedure descriptions
Reviewed By: jberdine
Differential Revision: D4057185
fbshipit-source-id: b444756
Summary: This code is an old experiement and has never really be used in prod because it was creating false positive. Dealing static final fields should be done in the backend instead so that it can used by the different languages C, Objective C, C++ and Java.
Reviewed By: jberdine
Differential Revision: D4055292
fbshipit-source-id: f1dc715
Summary:
Config.analyze_models, set by the INFER_ANALYZE_MODELS environment
variable, is redundant with Config.models_mode.
Reviewed By: jvillard
Differential Revision: D4047338
fbshipit-source-id: 4522d65
Summary:
Also be more careful when escaping arguments and create a module for shared
functionality between the clang frontend and the buck compilation database.
Reviewed By: jberdine
Differential Revision: D4036627
fbshipit-source-id: c981184
Summary: Some arguments passed from infer.ml to infer.py were only used to pass further to infer.ml invocations. Those args should be passed by env variable anyway (???)
Reviewed By: jberdine
Differential Revision: D4048003
fbshipit-source-id: 6f5fbeb
Summary:
Fix an issue where, when `-reactive` mode is used, files captured in the first second are not considered modified, and are not analyzed. This happens because file timestamps are used, and the resolution is one second.
Change the front-ends to change the timestamp of the directory where artifacts are created, so that the timestamps are 1 second in the future.
Small reactive commands such as the following now analyze correctly:
rm -rf infer-out && infer --reactive -- clang -c test.c
Reviewed By: jberdine
Differential Revision: D4050689
fbshipit-source-id: 6271860
Summary:
Move compilation database into separate module which loads said database from json file.
It will allow to load database from json file without calling buck.
Reviewed By: dulmarod
Differential Revision: D4049255
fbshipit-source-id: b2fa29f
Summary:
The integration would not work if other arguments were passed to Buck via infer
using Xbuck.
Reviewed By: akotulski
Differential Revision: D4044371
fbshipit-source-id: 742b5b3
Summary:
Declared and defined procedure attributes are now saved in different files (hashed_name.decl.attr and hashname.attr).
We always try to load using the filename of defined procedure attributes first,
and fall back to loading the file for declared ones if it does not exist.
The logic for replacing an existing file stays the same, with one extra thing:
when a file for a defined attribute is written, the one for the declared one
is deleted if it exists.
At the end of a capture, either a declared or a defined file exist, but not both.
The reason for this change is that when captures of different subprojects are
merged together, it can happen that a link gets created to a declared attributes
file even though a defined one exists, so the body of the procedure will not be analyzed.
After this diff, both links will be created, and the defined one will be loaded
by the back-end.
Reviewed By: dulmarod
Differential Revision: D4037423
fbshipit-source-id: 74fb7e6
Summary: failing to resolve was making the Java analysis to report errors with absolute paths instead of relative paths.
Reviewed By: sblackshear
Differential Revision: D4032764
fbshipit-source-id: e316193
Summary:
Python isn't needed anymore to pass options between `infer` and `InferClang`.
However, it is still needed to set up `PATH` so that we pick up compilation
commands.
Reviewed By: jberdine
Differential Revision: D4008469
fbshipit-source-id: 05c5716
Summary: This avoids issues where the command-line may get too large.
Reviewed By: jberdine
Differential Revision: D4008328
fbshipit-source-id: c1558b9
Summary:
This also adds `-a compile` support to `InferClang`. This is needed for the
`xcodebuild` integration, which is hard to fold into the same binary as the
rest.
Reviewed By: jberdine
Differential Revision: D4008262
fbshipit-source-id: 0bbd53f
Summary:
Checker for the Static Initialization Order Fiasco pattern:
https://isocpp.org/wiki/faq/ctors#static-init-order
1. Collect all globals (transitively) accessed in any given procedure.
2. Once the interprocedural analysis has finished, look at globals accessed in
initializers that do not belong to the current translation unit.
Reviewed By: sblackshear
Differential Revision: D3780266
fbshipit-source-id: 1d07161
Summary:
Create dummy functions representing the initializers of global variables. This
is so we can implement checks in the backend that can look at the initializer
expressions of global variables. We try not to create these dummy functions
when the initializer is not present, although for some reason we sometimes end
up with empty initializers.
Also add source file info to global variables in the backend (Pvar.re).
Reviewed By: sblackshear
Differential Revision: D3780238
fbshipit-source-id: 2dca87e
Summary:
There's no reason for infer to be in lib/ anymore, move it to the same place as
the other binaries. Thus all binaries are in the same directory and Config.ml
can better know where things are.
Reviewed By: jberdine
Differential Revision: D4015958
fbshipit-source-id: c5e851f
Summary: `tput cols` spams the terminal when it finds `$TERM` confusing. Reimplement what we need, which is very little, in C.
Reviewed By: jberdine
Differential Revision: D3960620
fbshipit-source-id: afe357e
Summary:
Before, if I wrote code like
```
x = src()
sink(x)
sink(x)
```
we would report three times instead of two.
The first flow would be double-reported.
Reviewed By: jeremydubreil
Differential Revision: D4024678
fbshipit-source-id: fcd5b30
Summary: when a method has writes to a field outside of synchrnoization, issue an appropriate error message identifying the fields
Reviewed By: sblackshear
Differential Revision: D4015612
fbshipit-source-id: 4f697fc
Summary:
This diff adds a make target to generate interface files from
implementation files. These generated interface files can then be used
as a starting point for documenting and restricting the exposed module
interface. For example, to generate an interface for JavaTaintAnalysis.ml,
execute:
```
make -C infer/src M=quandary/JavaTaintAnalysis mli
```
Note that this relies on `ocamlc -i`, which for reason currently
produces syntactically ill-formed files.
Reviewed By: sblackshear, jvillard
Differential Revision: D3998175
fbshipit-source-id: f653737
Summary: Also make sure it's not dead code, so we don't break it again by accident.
Reviewed By: jeremydubreil
Differential Revision: D4015793
fbshipit-source-id: 017d862
Summary:
During the development/debugging of AST checks, it will be possible to emit dotty graphs with a representation of the evaluation of formulas.
The formulas, expressed using the notation of CTL (https://en.wikipedia.org/wiki/Computation_tree_logic) are represented in a graph alongside the current ast-node and their final evaluation result (green for true, red for false)
To get the dotty graph, run infer with the `--debug` flag
Reviewed By: ddino
Differential Revision: D3937787
fbshipit-source-id: 163e17d
Summary: Avoid polluting stdout and stderr for executables that are always supposed to log into files.
Reviewed By: dulmarod
Differential Revision: D4008888
fbshipit-source-id: 1366498
Summary: Nothing mutates those fields so there is no need to make them `mutable`
Reviewed By: cristianoc
Differential Revision: D4009166
fbshipit-source-id: b840a4b
Summary:
This fixes a perf issue on large files, where a copy of the type environment and control flow graph were loaded for each procedure analyzed in the file.
If the type environment or the control flow graph are big, and the file contains many procedures, this can cause a big memory overhead.
Reviewed By: jvillard
Differential Revision: D4008655
fbshipit-source-id: 11d07c1
Summary:
This changes executions of the former InferClang into a function call. In
particular, it can be called several times per execution.
The new InferClang must be called as if it was clang, and knows how to run
clang with our plugin to get the AST of the source file.
Reviewed By: akotulski
Differential Revision: D3981017
fbshipit-source-id: 7af6490
Summary:
This diff removes the unused support for reporting props, which enables
refactoring so that the 'base' directory has no dependencies, and the
'IR' directory depends only on 'base'.
Reviewed By: jvillard
Differential Revision: D3981352
fbshipit-source-id: 3700a23
Summary:
Color modules in dependency graph based on directory, and cluster
modules together into a subgraph if their directory is listed in the
`clusters` variable of infer/src/Makefile.
Reviewed By: akotulski
Differential Revision: D3979253
fbshipit-source-id: dffd76b
Summary: Introduce `--enable-ocamlopt-custom-cc` configure flag (disabled by default). Normally it doesn't have to be set. However, when cross-compiling infer itself for another platform it may have to be set.
Reviewed By: jberdine
Differential Revision: D3995032
fbshipit-source-id: ce2fd72
Summary: it seems to have no effect on analysis. As such it should be ok to add cg nodes for builtin model calls
Reviewed By: jberdine
Differential Revision: D3967399
fbshipit-source-id: 06c32e5
Summary:
This changes the algorithm for pure join to keep the constraints that,
after normalization, occur in both arguments. Previously pure join
would normalize, filter, and then union the constraints of the
arguments.
Reviewed By: sblackshear
Differential Revision: D3970394
fbshipit-source-id: 3dc1672
Summary:
This is needed for later: InferClang will no longer be started once for each
source file to be analysed. Instead, it will be called to analyse several files
at once, and will analyse them one by one. Thus, `clang_lang` and `source_file`
are moved to `cFrontend_config` as references.
The biggest change this entailed was the new logging infrastructure, which was
depending on `Config.source_file`. This diff moves the logic entirely to
`Logging`, and changes the API so that executables wishing to log into files
have to set it up using `Logging.set_log_file_identifier`. This can be called
several times during the execution, allowing to dynamically change the log file
(eg, when analysing several source files one by one!).
Reviewed By: jberdine
Differential Revision: D3944148
fbshipit-source-id: 6129090
Summary:
Let's start migrating some of our bash script to OCaml to make them easier to
maintain and extend.
For now replace just one script and put it in lib/clang_wrappers/ at compile
time, where the former script used to be. Further simplifications will come
later.
Reviewed By: jberdine
Differential Revision: D3929988
fbshipit-source-id: b2d8b37
Summary:
We were previously leaking the passthroughs of the callee into the caller.
We definitely don't want to do this since it could make the summaries higher up in the call stack explode.
If we need to know the passthroughs of a callee, we can always read them from the callee's summary.
Reviewed By: jeremydubreil
Differential Revision: D3972679
fbshipit-source-id: 5b5903f
Summary: That data was never used and removing it can simplify frontends quite a bit.
Reviewed By: jberdine
Differential Revision: D3967389
fbshipit-source-id: d65c3da
Summary: The code has not much to do with IR and should be part of backend/ directory.
Reviewed By: sblackshear
Differential Revision: D3950834
fbshipit-source-id: 315ea19
Summary:
Move most of common dependencies out of backend/ into base/
Diff doesn't change any code and hence files in base/ may still depend on
code outside of base/. There will be followup diff cleaning those up.
There are also files that maybe should be in common/ but haven't been moved there yet.
Reviewed By: jberdine
Differential Revision: D3950695
fbshipit-source-id: 00612b1
Summary:
Just adds a language agnostic option to skip the analysis of some files based on the path name. Can be used from the command line with:
infer infer --skip-analysis-in-path "some/path/" ...
or via the `.inferconfig` file:
{
"skip-analysis-in-path": [
"infer/demo/Resource.java"
]
}
Reviewed By: jberdine
Differential Revision: D3954809
fbshipit-source-id: d0d2b9f
Summary:
- Use the module types in cModule_types.ml instead of redefining them.
- A few occurrences of \n in formatted output replaced by @\n to let the
formatter know of line breaks (by no means complete, these were just a few I
came across while doing something else)
Reviewed By: jberdine
Differential Revision: D3944081
fbshipit-source-id: 4460427
Summary:
It's nice to be able to know how well the process we started did, although this
diff ignores it for now.
Reviewed By: dulmarod
Differential Revision: D3937902
fbshipit-source-id: 80bf20f
Summary:
In order to have only InferJava depend on JBasics, do not use
JBasics.java_lang_object in the IR or backend. Note that this implies
that the Java frontend should ideally translate JBasics.java_lang_object
to Typename.Java.java_lang_Object.
Reviewed By: jeremydubreil
Differential Revision: D3956468
fbshipit-source-id: def64dd
Summary:
This diff introduces a first version of a front-end checkers specification
language. The language is based on the CTL temporal logic that is interpreted
on trees. In this case the model for a formula is the AST of the program produced
by clang.
This diff introduce the language and translate most of the existing checks on
this new language. In other diff I will translate all the other checks.
Then I will generalize the framework to allow the developer to specify only
the CTL formula.
Reviewed By: martinoluca
Differential Revision: D3819211
fbshipit-source-id: f8e01eb
Summary:
Change implementation of NSArray and NSDictionary model builtins to use
the method return type instead of magicking up types from strings.
Reviewed By: jvillard
Differential Revision: D3919815
fbshipit-source-id: f07a993
Summary:
Change Sil.Call instruction to have only a single optional return
identifier, insted of a list. Essentially none of the code handled
multiple return identifiers. Also, add the type of the return
identitifier to Call instructions.
Reviewed By: sblackshear
Differential Revision: D3919358
fbshipit-source-id: d2d4f72
Summary:
Refactor Sil.struct_typ and associated operations into a separate
StructTyp module. This is possible now that Typ.Tstruct only carries a
type name instead of the definition directly, and is helpful to simplify
module dependencies.
Reviewed By: cristianoc
Differential Revision: D3919357
fbshipit-source-id: a37a656
Summary:
It is no longer necessary to keep the name of a struct within the
struct, as the name will just have been used to look it up.
Reviewed By: cristianoc
Differential Revision: D3919355
fbshipit-source-id: ab65168
Summary:
Pass the exe_env to checker cluster callbacks, and add it to the domain
extras for BoundedCallTree, and use the Exe_env instead of
AttributesTable to obtain the tenv.
Reviewed By: sblackshear
Differential Revision: D3921850
fbshipit-source-id: 9edf324
Summary: The Infer builtins can be used in the e2e tests, but those tests should not depend on the Infer models to avoid cyclic dependencies. This diff separates the models and the Infer builtins in two directories so that the test can depend on the builtins without depending on the models
Reviewed By: sblackshear
Differential Revision: D3929478
fbshipit-source-id: 7d0ab79
Summary:
The global reference `DB.current_source` is used internally in the module DB, by all the front-ends, and directly and indirectly by the back-end, including saving and restoring the state in case of on-demand procedure calls. In particular, it is heavily used in printing functions.
This diff cleans up the flow of information about what the current file is, making it explicit, and removes the reference.
Reviewed By: jberdine
Differential Revision: D3901247
fbshipit-source-id: ef596bd
Sam Blackshear
Dulma Churchill
Cristiano Calcagno
Jeremy Dubreil
Jules Villard
Josh Berdine
Ryan Rhee
Dino Distefano
Peter O'Hearn
Andrzej Kotulski
Martino Luca