Initial scaffold: certificate control plane v0.1.0

internal/connector/target/iis/iis.go

@@ -0,0 +1,196 @@
+package iis
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log/slog"
+	"runtime"
+	"time"
+
+	"github.com/shankar0123/certctl/internal/connector/target"
+)
+
+// Config represents the IIS deployment target configuration.
+// This configuration is for Windows agents that manage IIS servers.
+type Config struct {
+	Hostname       string `json:"hostname"`        // Target hostname or IP
+	SiteName       string `json:"site_name"`       // IIS site name (e.g., "Default Web Site")
+	CertStore      string `json:"cert_store"`      // Windows cert store (e.g., "My", "WebHosting")
+	BindingInfo    string `json:"binding_info"`    // Binding info (e.g., "*.example.com")
+}
+
+// Connector implements the target.Connector interface for IIS (Internet Information Services).
+// This connector runs on Windows agents and manages certificate deployment via IIS.
+//
+// IIS certificate management requires:
+// - Windows Server with IIS installed
+// - PowerShell execution available
+// - Administrative privileges
+//
+// TODO: Implement actual PowerShell command execution for:
+// - Certificate import: Import-PfxCertificate
+// - IIS binding update: New-WebBinding, Set-WebBinding
+// - Validation: Get-WebBinding
+type Connector struct {
+	config *Config
+	logger *slog.Logger
+}
+
+// New creates a new IIS target connector with the given configuration and logger.
+func New(config *Config, logger *slog.Logger) *Connector {
+	return &Connector{
+		config: config,
+		logger: logger,
+	}
+}
+
+// ValidateConfig checks that the IIS configuration is valid and accessible.
+// It verifies that we're on Windows and that the IIS site exists.
+//
+// TODO: Implement actual PowerShell checks.
+func (c *Connector) ValidateConfig(ctx context.Context, rawConfig json.RawMessage) error {
+	var cfg Config
+	if err := json.Unmarshal(rawConfig, &cfg); err != nil {
+		return fmt.Errorf("invalid IIS config: %w", err)
+	}
+
+	if cfg.SiteName == "" || cfg.CertStore == "" {
+		return fmt.Errorf("IIS site_name and cert_store are required")
+	}
+
+	// Verify we're on Windows
+	if runtime.GOOS != "windows" {
+		return fmt.Errorf("IIS connector only runs on Windows, got %s", runtime.GOOS)
+	}
+
+	c.logger.Info("validating IIS configuration",
+		"site_name", cfg.SiteName,
+		"cert_store", cfg.CertStore,
+		"hostname", cfg.Hostname)
+
+	// TODO: Implement PowerShell check
+	// In production:
+	//   1. Run PowerShell command: Get-IISSite -Name {SiteName}
+	//   2. Verify site exists and is running
+	//   3. Check cert store: Get-Item -Path "Cert:\LocalMachine\{CertStore}"
+
+	c.logger.Warn("IIS validation not yet fully implemented",
+		"site_name", cfg.SiteName)
+
+	c.config = &cfg
+	return nil
+}
+
+// DeployCertificate imports a certificate to the Windows certificate store and updates
+// the IIS binding to use the new certificate.
+//
+// The IIS deployment process (via PowerShell):
+// 1. Create a temporary PFX file from the certificate and existing private key
+//    (Note: The private key is managed by the agent, not provided by the control plane)
+// 2. Import the PFX to the Windows certificate store (My store by default)
+// 3. Get the certificate thumbprint
+// 4. Update the IIS binding to use the new certificate by thumbprint
+// 5. Verify the binding is active
+//
+// TODO: Implement actual PowerShell commands:
+// - Import-PfxCertificate -FilePath {pfxPath} -CertStoreLocation "Cert:\LocalMachine\My"
+// - Get-ChildItem -Path "Cert:\LocalMachine\My" | Where {$_.Subject -eq "CN=..."}
+// - Set-WebBinding -Name {SiteName} -BindingInformation "{BindingInfo}" -Protocol https -SslFlags 1 -CertificateThumbprint {thumbprint}
+func (c *Connector) DeployCertificate(ctx context.Context, request target.DeploymentRequest) (*target.DeploymentResult, error) {
+	c.logger.Info("deploying certificate to IIS",
+		"site_name", c.config.SiteName,
+		"cert_store", c.config.CertStore)
+
+	startTime := time.Now()
+
+	// TODO: Implement IIS certificate deployment
+	// In production:
+	//   1. Create temporary PFX from CertPEM and ChainPEM
+	//      (Private key should already exist on the agent)
+	//   2. Import certificate:
+	//      PowerShell: Import-PfxCertificate -FilePath $pfxPath -CertStoreLocation "Cert:\LocalMachine\{CertStore}" -Password $password
+	//   3. Get certificate thumbprint:
+	//      PowerShell: (Get-ChildItem -Path "Cert:\LocalMachine\{CertStore}" | Where {$_.Subject -like "*CN=*"}).Thumbprint
+	//   4. Update IIS binding:
+	//      PowerShell: Set-WebBinding -Name "{SiteName}" -BindingInformation "{BindingInfo}:443:*.example.com" -Protocol https -CertificateThumbprint $thumbprint
+	//   5. Remove temporary PFX file
+
+	deploymentDuration := time.Since(startTime)
+
+	c.logger.Warn("IIS deployment not yet implemented",
+		"site_name", c.config.SiteName)
+
+	return &target.DeploymentResult{
+		Success:       true,
+		TargetAddress: fmt.Sprintf("%s (IIS: %s)", c.config.Hostname, c.config.SiteName),
+		DeploymentID:  fmt.Sprintf("iis-%d", time.Now().Unix()),
+		Message:       "Certificate deployment to IIS initiated (stub)",
+		DeployedAt:    time.Now(),
+		Metadata: map[string]string{
+			"hostname":     c.config.Hostname,
+			"site_name":    c.config.SiteName,
+			"cert_store":   c.config.CertStore,
+			"duration_ms":  fmt.Sprintf("%d", deploymentDuration.Milliseconds()),
+		},
+	}, nil
+}
+
+// ValidateDeployment verifies that the certificate is properly deployed in IIS.
+// It checks the IIS binding configuration to ensure it's active with the correct certificate.
+//
+// TODO: Implement actual PowerShell validation.
+// PowerShell command:
+// - Get-IISSiteBinding -Name {SiteName} | Where {$_.protocol -eq "https"}
+func (c *Connector) ValidateDeployment(ctx context.Context, request target.ValidationRequest) (*target.ValidationResult, error) {
+	c.logger.Info("validating IIS deployment",
+		"certificate_id", request.CertificateID,
+		"serial", request.Serial,
+		"site_name", c.config.SiteName)
+
+	startTime := time.Now()
+
+	// TODO: Implement IIS deployment validation
+	// In production:
+	//   1. Query IIS binding status:
+	//      PowerShell: Get-WebBinding -Name "{SiteName}" -Protocol "https"
+	//   2. Verify binding exists and is active
+	//   3. Extract certificate thumbprint from binding
+	//   4. Query certificate store to verify thumbprint matches expected certificate
+	//   5. Check certificate validity dates and key match
+
+	validationDuration := time.Since(startTime)
+
+	c.logger.Warn("IIS validation not yet implemented",
+		"site_name", c.config.SiteName)
+
+	return &target.ValidationResult{
+		Valid:         true,
+		Serial:        request.Serial,
+		TargetAddress: fmt.Sprintf("%s (IIS: %s)", c.config.Hostname, c.config.SiteName),
+		Message:       "Certificate deployment validation initiated (stub)",
+		ValidatedAt:   time.Now(),
+		Metadata: map[string]string{
+			"hostname":    c.config.Hostname,
+			"site_name":   c.config.SiteName,
+			"duration_ms": fmt.Sprintf("%d", validationDuration.Milliseconds()),
+		},
+	}, nil
+}
+
+// executePowerShellCommand is a helper to run PowerShell commands on Windows.
+// It's a stub implementation that documents the pattern for actual PS execution.
+func (c *Connector) executePowerShellCommand(ctx context.Context, psCommand string) (string, error) {
+	if runtime.GOOS != "windows" {
+		return "", fmt.Errorf("PowerShell commands only work on Windows")
+	}
+
+	// TODO: Implement actual PowerShell execution
+	// In production:
+	//   cmd := exec.CommandContext(ctx, "powershell", "-NoProfile", "-Command", psCommand)
+	//   output, err := cmd.CombinedOutput()
+	//   return string(output), err
+
+	c.logger.Debug("executing PowerShell command", "command", psCommand)
+	return "", nil
+}