RUST-2235 Implement GSSAPI auth support for Linux and macOS (#1413)

Author: mattChiaravalloti

.evergreen/aws-lambda-test/README.md

@@ -33,7 +33,7 @@ To deploy the application, you need the folllowing tools:
 
 * SAM CLI - [Install the SAM CLI](https://docs.aws.amazon.com/serverless-application-model/latest/developerguide/serverless-sam-cli-install.html)
 * Docker - [Install Docker community edition](https://hub.docker.com/search/?type=edition&offering=community)
-* [Rust](https://www.rust-lang.org/) version 1.81.0 or newer
+* [Rust](https://www.rust-lang.org/) version 1.82.0 or newer
 * [cargo-lambda](https://github.com/cargo-lambda/cargo-lambda) for cross-compilation
 
 To build and deploy your application for the first time, run the following in your shell:

.evergreen/compile-only.sh

@@ -17,7 +17,7 @@ cargo $TOOLCHAIN build
 
 # Test with all features.
 if [ "$RUST_VERSION" != "" ]; then
-  cargo $TOOLCHAIN build --features openssl-tls,sync,aws-auth,zlib-compression,zstd-compression,snappy-compression,in-use-encryption,tracing-unstable
+  cargo $TOOLCHAIN build --features openssl-tls,sync,aws-auth,gssapi-auth,zlib-compression,zstd-compression,snappy-compression,in-use-encryption,tracing-unstable
 else
   cargo $TOOLCHAIN build --all-features
 fi

.evergreen/config.yml

@@ -257,6 +257,14 @@ buildvariants:
     # Limit the test to only schedule every 14 days to reduce external resource usage.
     batchtime: 20160
 
+  - name: gssapi-auth
+    display_name: "GSSAPI Authentication"
+    patchable: true
+    run_on:
+      - ubuntu2004-small
+    tasks:
+      - test-gssapi-auth
+
   - name: x509-auth
     display_name: "x509 Authentication"
     patchable: false
@@ -772,7 +780,7 @@ tasks:
       - func: "compile only"
         vars:
           # Our minimum supported Rust version. This should be updated whenever the MSRV is bumped.
-          RUST_VERSION: 1.81.0
+          RUST_VERSION: 1.82.0
 
   - name: check-cargo-deny
     commands:
@@ -924,6 +932,10 @@ tasks:
         vars:
           AWS_ROLE_SESSION_NAME: test
 
+  - name: test-gssapi-auth
+    commands:
+      - func: "run gssapi auth test"
+
   - name: test-atlas-connectivity
     commands:
       - func: "run atlas tests"
@@ -1376,6 +1388,17 @@ functions:
         env:
           AWS_AUTH_TYPE: web-identity
 
+  "run gssapi auth test":
+    - command: subprocess.exec
+      type: test
+      params:
+        binary: bash
+        working_dir: ${PROJECT_DIRECTORY}
+        args:
+          - .evergreen/run-gssapi-tests.sh
+        include_expansions_in_env:
+          - PROJECT_DIRECTORY
+
   "run x509 tests":
     - command: shell.exec
       type: test

.evergreen/run-gssapi-tests.sh

@@ -0,0 +1,20 @@
+#!/bin/bash
+
+set -o xtrace
+set -o errexit # Exit the script with error if any of the commands fail
+
+echo "Running MONGODB-GSSAPI authentication tests"
+
+cd ${PROJECT_DIRECTORY}
+source .evergreen/env.sh
+source .evergreen/cargo-test.sh
+
+FEATURE_FLAGS+=("gssapi-auth")
+
+set +o errexit
+
+cargo_test spec::auth
+cargo_test uri_options
+cargo_test connection_string
+
+exit $CARGO_RESULT