feat: added options for static-ip & custom root CA

.gitignore

@@ -4,3 +4,4 @@
 /cmd/hcloud/hcloud
 hcloud_cli.p12
 coverage.txt
+/.idea

internal/state/config/options.go

@@ -115,6 +115,24 @@ var (
 		&overrides{configKey: "active_context"},
 	)
 
+	OptionStaticIp = newOpt(
+		"static-ip",
+		"Set a static ip for Hetzner API endpoint",
+		"",
+		DefaultPreferenceFlags,
+		nil,
+		nil,
+	)
+
+	OptionRootCA = newOpt(
+		"root-ca",
+		"Set a custom root CA for Hetzner API endpoint",
+		"",
+		DefaultPreferenceFlags,
+		nil,
+		nil,
+	)
+
 	OptionEndpoint = newOpt(
 		"endpoint",
 		"Hetzner Cloud API endpoint",

internal/state/state.go

@@ -2,8 +2,12 @@ package state
 
 import (
 	"context"
+	"crypto/tls"
+	"crypto/x509"
 	"fmt"
 	"io"
+	"net"
+	"net/http"
 	"os"
 	"strings"
 
@@ -88,13 +92,14 @@ func (c *state) newClient() (hcapi2.Client, error) {
 		return nil, err
 	}
 
+	var debugWriter io.Writer
+
 	if debug {
 		filePath, err := config.OptionDebugFile.Get(c.config)
 		if err != nil {
 			return nil, err
 		}
 
-		var debugWriter io.Writer
 		if filePath == "" {
 			debugWriter = os.Stderr
 		} else {
@@ -128,5 +133,43 @@ func (c *state) newClient() (hcapi2.Client, error) {
 		}))
 	}
 
+	staticIp, err := config.OptionStaticIp.Get(c.config)
+	if err != nil {
+		return nil, err
+	}
+
+	rootCA, err := config.OptionRootCA.Get(c.config)
+	if err != nil {
+		return nil, err
+	}
+
+	if staticIp != "" || rootCA != "" {
+		tr := &http.Transport{}
+
+		if staticIp != "" {
+			tr.DialContext = func(ctx context.Context, network, addr string) (net.Conn, error) {
+				split := strings.Split(addr, ":")
+				return net.Dial(network, fmt.Sprintf("%s:%s", staticIp, split[1]))
+			}
+		}
+
+		if rootCA != "" {
+			certs := x509.NewCertPool()
+			pemData, err := os.ReadFile(rootCA)
+			if err != nil && debug {
+				fmt.Fprintf(debugWriter, "Error reading root CA certificate %s:\n%s\n", rootCA, err)
+			}
+			if err == nil {
+				certs.AppendCertsFromPEM(pemData)
+				tr.TLSClientConfig = &tls.Config{
+					RootCAs: certs,
+				}
+			}
+		}
+
+		client := &http.Client{Transport: tr}
+		opts = append(opts, hcloud.WithHTTPClient(client))
+	}
+
 	return hcapi2.NewClient(opts...), nil
 }