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This commit adds in the fscrypt/pam package. This package will hold all
functionality related to Linux Pluggable Authentication Modules (PAM).
Right now this package uses cgo to mock a PAM conversation, allowing the
function to check if a provided passphrase actually belongs to a user.
Due to the nature of cgo callbacks, global state of the key to check is
necessary for this function. This commit also addresses some issues
about building the cgo components. Now, only the minimal linking flags
are included in the go files. Additional linker flags may now be
necessary to build a static binary of fscrypt. This is addressed in the
Makefile and README.
Finally, this commit fixes a bug where the tests would not run correctly
due to shared global state on the testing filesystem. Fixed, by having
all the tests run sequentially.
Change-Id: Ia43636801da984b505d2f43dd14127b7cfbf2c48
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This commit moves most of the documentation about contributing to
fscrypt into CONTRIBUTING.md and updates the legal disclaimer.
It also updates the README.md to include all of fscrypt's planned
functionality and dependencies. Finally, the makefile is updated to
include more documentation, versioning support, and a different location
for the output file.
Change-Id: Ib7be98d41bc06dd12b02e42addf06e12a940235a
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This commit adds in the ability to get and set policy data from go using
the GetPolicy and SetPolicy functions. This is done via a patch of the
x/sys/unix package that exposes the filesystem encryption structures.
Note that not all the fields of the PolicyData protocol buffer are
needed to get and set policies. The wrapped_policy_keys are not used and
will be written and read by other components of fscrypt.
To run the policy tests, the environment variable BASE_TEST_DIR must be
set to a directory for testing on a filesystem that supports encryption.
Change-Id: I13b1d983356845f3ffc1945cedf53234218f32e5
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This commit adds in the metadata package. The primary purpose of this
package is to provide the on-disk metadata structures in the form of
protocol buffers. This includes:
- Policy metadata structure
- Protector metadata structure
- Config file structure
- All necessary sub-structures (wrapped keys, parameters, etc)
This commit also adds in an example usage of the Config structure, which
represents the structure of the global config file. All the package
does at this point is convert between the Config structure and a JSON
representation.
Here we introduce govendor, which is described more in the README. This
means we will have all of our Go dependencies in the vendor
subdirectory. This means we will have no Go source dependencies, only
dependencies on the build tools (Go and govendor). The README describes
this in detail.
Note that we commit the generated files.
see: https://blog.golang.org/generate
Change-Id: Iaacd46666b5d3e4e865a0f4045dd63ed7e3d6f96
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This commit adds in the util package. This package provides
two functions for creating errors. These functions are:
- InvalidInputErrorF - bad input from user or caller
- SystemErrorF - low level failure
It also adds in a small function for converting Go byte slices into C
void pointers. This will be very useful for interoperating with C.
Change-Id: I87ad7946dd5fa26e28927590aff4bcc9fd5ce4f7
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This commit adds in a stub fscrypt program. The binary just tells the
time and the tests do nothing, but the Makefile will build them! This
commit also adds documentation to the README that explains how to get,
build, run, test, format, lint, and install the code.
Also note that the executable is now in the cmd/fscrypt directory. The
library implementing the core functionality will be at the root. This
is essentially point 2 of https://medium.com/@benbjohnson/structuring-applications-in-go-3b04be4ff091
Change-Id: Ib7bd782e458bdf3db456beb978be4c75b4734561
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