Initial signing support (#1345)

* Add CLI options

* Add manifest types

* Thread signature policy through to fetchers

* Thread signing section through from metadata

* Implement signing validation

* Clippy

* Attempt testing

* Yes and

* Why

* fmt

* Update crates/bin/src/args.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/binstalk-fetchers/src/gh_crate_meta.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/bin/src/args.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/binstalk-fetchers/src/signing.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/binstalk-fetchers/src/signing.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/binstalk-fetchers/src/signing.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Update crates/binstalk-fetchers/src/signing.rs

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* fixes

* Finish feature

* Document

* Include all fields in the signing.file template

* Readme document

* Review fixes

* Fail on non-utf8 sig

* Thank goodness for tests

* Run test in ci

* Add rsign2 commands

* Log utf8 error

* Update e2e-tests/signing.sh

Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fix `e2e-tests/signing.sh` MacOS CI failure

Move the tls cert creation into `signing.sh` and sleep for 10s to wait
for https server to start.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Refactor e2e-tests-signing files

 - Use a tempdir generated by `mktemp` for all certificates-related
   files
 - Put other checked-in files into `e2e-tests/signing`

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fixed `e2e-tests-signing` connection err in MacOS CI

Wait for server to start up by trying to connect to it.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fix `e2e-tests-signing` passing `-subj` to `openssl` on Windows

Use single quote instead of double quote to avoid automatic expansion
from bash

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fix `e2e-tests-signing` waiting for server to startup

Remove `timeout` since it is not supported on MacOS.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Try to fix windows CI by setting `MSYS_NO_PATHCONV=1` on `openssl` cmds

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fixed `e2e-tests-signing` on windows

By using double `//` for the value passed to option `-subj`

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fixed infinite loop in `signing/wait-for-server` on Windows

Pass `--ssl-revoke-best-effort` to prevent schannel from checking ssl
revocation status.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Add cap on retry attempt in `signing/wait-for-server.sh`

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Let `singing/server.py` print output to stderr

so that we can see the error message there.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

* Fix running `signing/server.py` on MacOS CI

use `python3` since macos-latest still has python2 installed and
`python` is a symlink to `python2` there.

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>

---------

Signed-off-by: Jiahao XU <Jiahao_XU@outlook.com>
Co-authored-by: Jiahao XU <Jiahao_XU@outlook.com>

justfile

@@ -247,6 +247,7 @@ e2e-test-uninstall: (e2e-test "uninstall")
 e2e-test-no-track: (e2e-test "no-track")
 e2e-test-git: (e2e-test "git")
 e2e-test-registries: (e2e-test "registries")
+e2e-test-signing: (e2e-test "signing")
 
 # WinTLS (Windows in CI) does not have TLS 1.3 support
 [windows]
@@ -255,7 +256,7 @@ e2e-test-tls: (e2e-test "tls" "1.2")
 [macos]
 e2e-test-tls: (e2e-test "tls" "1.2") (e2e-test "tls" "1.3")
 
-e2e-tests: e2e-test-live e2e-test-manifest-path e2e-test-git e2e-test-other-repos e2e-test-strategies e2e-test-version-syntax e2e-test-upgrade e2e-test-tls e2e-test-self-upgrade-no-symlink e2e-test-uninstall e2e-test-subcrate e2e-test-no-track e2e-test-registries
+e2e-tests: e2e-test-live e2e-test-manifest-path e2e-test-git e2e-test-other-repos e2e-test-strategies e2e-test-version-syntax e2e-test-upgrade e2e-test-tls e2e-test-self-upgrade-no-symlink e2e-test-uninstall e2e-test-subcrate e2e-test-no-track e2e-test-registries e2e-test-signing
 
 unit-tests: print-env
     {{cargo-bin}} test {{cargo-build-args}}