Python client API to access SecureDrop Journalist REST API
Project description
By contributing to this project, you agree to abide by our Code of Conduct.
Python SDK for SecureDrop
This SDK provides a convenient Python interface to the SecureDrop Journalist Interface API. The development of the SDK was primarily motivated by the creation of the SecureDrop Workstation based on Qubes OS.
The SDK is currently used by the SecureDrop Client that is a component of the SecureDrop Workstation. When used in Qubes OS, the SDK uses the securedrop-proxy service, as the VM which runs the client does not have network access by design.
Quick Start
make venv
source .venv/bin/activate
make test
We cover all the API calls supported by the SecureDrop Journalist Interface API.
To install the SDK into your virtualenv
for testing purposes:
pip uninstall securedrop-sdk
pip install git+https://github.com/freedomofpress/securedrop-sdk@my_branch#egg=securedrop-sdk
Upgrading one single dependency
To upgrade one single Python dependency, say requests
, run the following:
PACKAGE=requests make upgrade-pip
This will upgrade both dev-requirements
and primary requirements
.
Running tests
To run all tests and checks, run:
make check
To run all tests, run:
make test
To run all tests that make API calls over HTTP, run:
make test TESTS=tests/test_api.py
To run all tests that make API calls over qrexec, run:
make test TESTS=tests/test_apiproxy.py
To run a single test, specify file name, class name, and test name, e.g.:
make test TESTS=tests/test_api.py::TestAPI::test_get_sources
Creating and updating tests
When tests are run, they replay recorded API request and response data instead of making actual API calls to a server. This is why tests can pass even when there is no server running. If the server ever changes its API or you want to add new tests that make API calls, then you'll need to record new request and response data by following the steps outlined below.
Note: We have a CI test that does not use the recorded API request and response data in order to make sure we are testing the latest changes to the SDK against the latest server API (see test-against-latest-api
in https://github.com/freedomofpress/securedrop-sdk/blob/main/.circleci/config.yml).
We use vcrpy to record and replay API calls made over HTTP and a decorator called @qrexec_datasaver
to record and replay API calls made over qrexec. Each request made from a test and its response from the server is stored in a "cassette" in the data
directory. Tests replay these cassettes instead of making actual API calls to a server.
If you run the tests and see the following vcrpy warning, then you'll need to re-record cassettes because none of the existing cassettes contain the expected API call and we don't allow existing cassettes to be overwritten:
Can't overwrite existing cassette ('<path-to-cassette-for-a-functional-test>') in your current record mode ('once').
The steps to generate new cassettes are split into two sections based on communication protocol: Generating cassettes for API calls over HTTP and Generating cassettes for API calls over qrexec.
Generating cassettes for API calls over HTTP
-
Start the server in a docker container by running:
NUM_SOURCES=5 make dev
-
Delete the cassettes you wish to regenerate or just delete all yaml files by running:
rm data/*.yml
If you are only adding a new test and not modifying existing ones, you can skip this step, but you still need to remove the authentication setup during cassette generation. Otherwise you will get 403 errors for API endpoints that require a valid token. Remove the setup cassette by running:
rm data/test-setup.yml
(You can reinstate the unmodified version later.)
-
Generate new cassettes that make API calls over HTTP by running:
make test TESTS=tests/test_api.py
Note: Some tests alter source and conversation data on the server so you may need to restart the server in between test runs.
Generating cassettes for API calls over qrexec
In order to generate cassettes for tests that make API calls over qrexec, you'll need to run the server and proxy on a separate VM. If this is the first time you are generating cassettes, first follow the steps outlined in the Test setup for qrexec communication section, which will help you set up a new VM called sd-dev-proxy
.
Once your proxy VM is set up, follow these steps:
-
Start the server in a docker container on
sd-dev-proxy
by running:NUM_SOURCES=5 make dev
-
Delete the cassettes you wish to regenerate or just delete all JSON files by running:
rm data/*.json
If you are only adding a new test and not modifying existing ones, you can skip this step, but you still need to remove the authentication setup during cassette generation. Otherwise you will get 403 errors for API endpoints that require a valid token. Remove the setup cassette by running:
rm data/setup_method.json
(You can reinstate the unmodified version later.)
-
Make qrexec calls to the server and collect response data. To run all proxy tests:
make test TESTS=tests/test_apiproxy.py
Note: If you get a 403 error it may also be because the test is trying to reuse an old TOTP code, so wait for 60 seconds and try again. Some tests alter source and conversation data on the server so you should restart the server in between test runs.
Test setup for qrexec communication
If this is the first time you are generating new cassettes that make API calls over qrexec, then you'll need to set up a new VM for running the server and proxy following these steps:
-
Create a new AppVM based on the debian-10 template called sd-dev-proxy.
-
Install the lastest proxy package:
wget https://apt.freedom.press/pool/main/s/securedrop-proxy/<latest-package>.deb dpkg -i <latest-package>.deb
-
Create
/home/user/.securedrop_proxy/sd-proxy.yaml
with the following contents (assuming the VM you'll be running the SDK tests from is called sd-dev):host: 127.0.0.1 scheme: http port: 8081 target_vm: sd-dev dev: False
-
Install Docker.
-
Clone
securedrop
on sd-dev-proxy and run the server in a Docker container:git clone https://github.com/freedomofpress/securedrop cd securedrop virtualenv .venv --python=python3 source .venv/bin/activate pip install -r securedrop/requirements/python3/develop-requirements.txt NUM_SOURCES=5 make dev
-
Open a terminal in sd-dev and create
/etc/sd-sdk.conf
with the following contents:
[proxy]
name=sd-dev-proxy
- Modify
/etc/qubes-rpc/policy/securedrop.Proxy
in dom0 by adding the following line to the top of the file so that the sdk tests can make calls to the proxy:
sd-dev sd-dev-proxy allow
NOTE: You may want to switch back to the RPC configuration files in their as-provisioned state before a make test
run in dom0
, as this and the following change to the RPC policies will break the strict validation of the RPC policies that is one of those tests.
- Modify
/etc/qubes-rpc/policy/qubes.Filecopy
in dom0 by adding the following line to the top of the file so that the proxy can send files over qrexec to the sdk:
sd-dev-proxy sd-dev allow
-
Verify qrexec communication between
sd-dev-proxy
andsd-dev
is set up properly.a. Run the server on
sd-dev-proxy
if it isn't already running:NUM_SOURCES=5 make dev
b. With the main branch of this repo checked out on
sd-dev
, comment out the@qrexec_datasaver
decorator above thetest_apiproxy.py::TestAPIProxy::setUp
method so thattest_api_auth
makes an actual API call over qrexec. c. Runtest_api_auth
:make test TESTS=tests/test_apiproxy.py::TestAPIProxy::test_api_auth
Note: If the test fails, run
journalctl -f
in dom0 before trying again to see if communication betweensd-dev
andsd-dev-proxy
is being denied. A successful log looks like this:Aug 28 15:45:13 dom0 qrexec[1474]: securedrop.Proxy: sd-dev -> sd-dev-proxy: allowed to sd-dev-proxy
Releasing
To make a release, you should:
- Create a branch named
release/$new_version_number
- Update
CHANGELOG.md
andsetup.py
- Commit the changes.
- Create a PR and get the PR reviewed and merged into
main
. git tag $new_version_number
and push the new tag.- Checkout the new tag locally.
- Push the new release source tarball to the PSF's PyPI following this documentation. Do not upload the wheel (by deleting it from your
dist/
directory prior to upload). - If you want to publish the new SDK release to the FPF PyPI mirror, Hop over to the the
securedrop-debian-packaging
repo and follow the build-a-package instructions to push the package up to our PyPI mirror: https://pypi-hypernode.com/simple
Contributing
Please read CONTRIBUTING.md for details on our code of conduct, and the process for submitting pull requests to us.
Versioning
We use SemVer for versioning. For the versions available, see the tags on this repository.
License
The Python SecureDrop SDK is licensed in the GPLv3. See LICENSE
for more details.
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