Add sshdconfig get

dsc/tests/dsc_sshdconfig.tests.ps1

@@ -0,0 +1,105 @@
+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+
+Describe 'SSHDConfig resource tests' {
+    BeforeAll {
+        $brewExists = ($null -ne (Get-Command brew -CommandType Application -ErrorAction Ignore))
+        $sshdExists = ($null -ne (Get-Command sshd -CommandType Application -ErrorAction Ignore))
+        $isAdmin = if ($IsWindows) {
+            $identity = [System.Security.Principal.WindowsIdentity]::GetCurrent()
+            [System.Security.Principal.WindowsPrincipal]::new($identity).IsInRole([System.Security.Principal.WindowsBuiltInRole]::Administrator)
+        }
+        else {
+            [System.Environment]::UserName -eq 'root'
+        }
+        $runTest = $sshdExists -and $isAdmin
+        $yaml = @'
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+metadata:
+  Microsoft.DSC:
+    securityContext: elevated
+resources:
+- name: sshdconfig
+  type: Microsoft.OpenSSH.SSHD/sshd_config
+  properties:
+'@
+        # set a non-default value in a temporary sshd_config file
+        "LogLevel Debug3" | Set-Content -Path $TestDrive/test_sshd_config
+    }
+
+    AfterAll {
+        if (Test-Path $TestDrive/test_sshd_config) {
+            Remove-Item -Path $TestDrive/test_sshd_config -Force
+        }
+    }
+
+    It 'Export works' {
+        if ($runTest) {
+            $out = dsc config export -i "$yaml" | ConvertFrom-Json -Depth 10
+            $LASTEXITCODE | Should -Be 0
+            $out.resources.count | Should -Be 1
+            $out.resources[0].properties | Should -Not -BeNullOrEmpty
+            $out.resources[0].properties.port[0] | Should -Be 22
+        }
+    }
+
+    It 'Get works'{
+        if ($runTest) {
+            $out = dsc config get -i "$yaml" | ConvertFrom-Json -Depth 10
+            $LASTEXITCODE | Should -Be 0
+            $out.results.count | Should -Be 1
+            $out.results.metadata.defaults | Should -Be $true
+            $out.results.result.actualState | Should -Not -BeNullOrEmpty
+            $out.results.result.actualState.port | Should -Be 22
+            $out.results.result.actualState.passwordAuthentication | Should -Be 'yes'
+        }
+    }
+
+    It 'Get with a specific setting works' {
+        if ($runTest) {
+            $get_yaml = @'
+$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+metadata:
+Microsoft.DSC:
+    securityContext: elevated
+resources:
+- name: sshdconfig
+type: Microsoft.OpenSSH.SSHD/sshd_config
+properties:
+    passwordauthentication: 'no'
+'@
+            $out = dsc config get -i "$get_yaml" | ConvertFrom-Json -Depth 10
+            $LASTEXITCODE | Should -Be 0
+            $out.results.count | Should -Be 1
+            $out.results.result.actualState.count | Should -Be 1
+            $out.results.result.actualState.passwordauthentication | Should -Be 'yes'
+            $out.results.result.actualState.port | Should -BeNullOrEmpty
+        }
+    }
+
+    It 'Get with defaults excluded works' {
+        if ($runTest) {
+            $filepath = Join-Path $TestDrive 'test_sshd_config'
+            $get_yaml = @"
+`$schema: https://aka.ms/dsc/schemas/v3/bundled/config/document.json
+metadata:
+  Microsoft.DSC:
+    securityContext: elevated
+resources:
+- name: sshdconfig
+  type: Microsoft.OpenSSH.SSHD/sshd_config
+  properties:
+    _metadata:
+        defaults: false
+        filepath: $filepath
+"@
+            $out = dsc config get -i "$get_yaml" | ConvertFrom-Json -Depth 10
+            $LASTEXITCODE | Should -Be 0
+            $out.results.count | Should -Be 1
+            $out.results.metadata.defaults | Should -Be $false
+            $out.results.result.actualState.count | Should -Be 1
+            $out.results.result.actualState.port | Should -Not -Be 22
+            $out.results.result.actualState.loglevel | Should -Be 'debug3'
+        }
+    }
+}

sshdconfig/Cargo.toml

@@ -22,6 +22,7 @@ rust-i18n = { version = "3.1" }
 schemars = "0.8"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = { version = "1.0", features = ["preserve_order"] }
+tempfile = "3.8"
 thiserror = { version = "2.0" }
 tracing = "0.1.37"
 tracing-subscriber = { version = "0.3.17", features = ["ansi", "env-filter", "json"] }

sshdconfig/locales/en-us.toml

@@ -1,25 +1,28 @@
 _version = 1
 
 [args]
+getInput = "input to get from sshd_config"
 setInput = "input to set in sshd_config"
 
 [error]
 command = "Command"
 invalidInput = "Invalid Input"
+io = "IO"
 json = "JSON"
 language = "Language"
-notImplemented = "Not Implemented"
 parser = "Parser"
 parseInt = "Parse Integer"
+persist = "Persist"
 registry = "Registry"
 
 [get]
 debugSetting = "Get setting:"
+defaultsMustBeBoolean = "defaults value must be true or false"
 defaultShellCmdOptionMustBeString = "cmdOption must be a string"
 defaultShellEscapeArgsMustBe0Or1 = "'%{input}' must be a 0 or 1"
 defaultShellEscapeArgsMustBeDWord = "escapeArguments must be a DWord"
 defaultShellMustBeString = "shell must be a string"
-notImplemented = "get not yet implemented for Microsoft.OpenSSH.SSHD/sshd_config"
+filepathMustBeString = "filePath must be a string"
 windowsOnly = "Microsoft.OpenSSH.SSHD/Windows is only applicable to Windows"
 
 [main]
@@ -51,5 +54,6 @@ shellPathDoesNotExist = "shell path does not exist: '%{shell}'"
 shellPathMustNotBeRelative = "shell path must not be relative"
 
 [util]
+metadataMustBeObject = "_metadata must be an object"
 sshdElevation = "elevated security context required"
 tracingInitError = "Failed to initialize tracing"

sshdconfig/src/args.rs

@@ -16,6 +16,8 @@ pub struct Args {
 pub enum Command {
     /// Get default shell, eventually to be used for `sshd_config` and repeatable keywords
     Get {
+        #[clap(short = 'i', long, help = t!("args.getInput").to_string())]
+        input: Option<String>,
         #[clap(short = 's', long, hide = true)]
         setting: Setting,
     },

sshdconfig/src/error.rs

@@ -2,6 +2,7 @@
 // Licensed under the MIT License.
 
 use rust_i18n::t;
+use tempfile::PersistError;
 use thiserror::Error;
 
 #[derive(Debug, Error)]
@@ -10,16 +11,18 @@ pub enum SshdConfigError {
     CommandError(String),
     #[error("{t}: {0}", t = t!("error.invalidInput"))]
     InvalidInput(String),
+    #[error("{t}: {0}", t = t!("error.io"))]
+    IOError(#[from] std::io::Error),
     #[error("{t}: {0}", t = t!("error.json"))]
     Json(#[from] serde_json::Error),
     #[error("{t}: {0}", t = t!("error.language"))]
     LanguageError(#[from] tree_sitter::LanguageError),
-    #[error("{t}: {0}", t = t!("error.notImplemented"))]
-    NotImplemented(String),
     #[error("{t}: {0}", t = t!("error.parser"))]
     ParserError(String),
     #[error("{t}: {0}", t = t!("error.parseInt"))]
     ParseIntError(#[from] std::num::ParseIntError),
+    #[error("{t}: {0}", t = t!("error.persist"))]
+    PersistError(#[from] PersistError),
     #[cfg(windows)]
     #[error("{t}: {0}", t = t!("error.registry"))]
     RegistryError(#[from] registry_lib::error::RegistryError),

sshdconfig/src/export.rs

@@ -1,19 +1,38 @@
 // Copyright (c) Microsoft Corporation.
 // Licensed under the MIT License.
 
+use serde_json::{Map, Value};
+
 use crate::error::SshdConfigError;
 use crate::parser::parse_text_to_map;
-use crate::util::invoke_sshd_config_validation;
+use crate::util::{invoke_sshd_config_validation, SshdCommandArgs};
 
-/// Invoke the export command.
+/// Invoke the export command and return a map.
 ///
 /// # Errors
 ///
 /// This function will return an error if the command cannot invoke sshd -T, parse the return, or convert it to json.
-pub fn invoke_export() -> Result<(), SshdConfigError> {
-    let sshd_config_text = invoke_sshd_config_validation()?;
-    let sshd_config: serde_json::Map<String, serde_json::Value> = parse_text_to_map(&sshd_config_text)?;
-    let json = serde_json::to_string(&sshd_config)?;
+///
+/// # Returns
+///
+/// This function will return `Ok(Map<String, Value>)` if the export is successful.
+pub fn invoke_export_to_map(sshd_args: Option<SshdCommandArgs>) -> Result<Map<String, Value>, SshdConfigError> {
+    let sshd_config_text = invoke_sshd_config_validation(sshd_args)?;
+    let sshd_config: Map<String, Value> = parse_text_to_map(&sshd_config_text)?;
+    Ok(sshd_config)
+}
+
+/// Invoke the export command and print the result as JSON.
+///
+/// # Errors
+/// This function will return an error if the export fails to retrieve the sshd configuration or convert it to JSON.
+///
+/// # Returns
+///
+/// This function will return `Ok(())` if the export is successful.
+pub fn invoke_export(sshd_args: Option<SshdCommandArgs>) -> Result<(), SshdConfigError> {
+    let result = invoke_export_to_map(sshd_args)?;
+    let json = serde_json::to_string(&result)?;
     println!("{json}");
     Ok(())
 }