bug: Fix manual install not supporting configuration url (#963)

* fixed manual install not supporting configuration url

Signed-off-by: Jacob Payne <jacob@spectrocloud.com>

* break out url logic and add testing.

Signed-off-by: Jacob Payne <jacob@spectrocloud.com>

---------

Signed-off-by: Jacob Payne <jacob@spectrocloud.com>
Co-authored-by: Ettore Di Giacinto <mudler@users.noreply.github.com>

internal/agent/install.go

@@ -1,12 +1,13 @@
 package agent
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
+	"net/url"
 	"os"
 	"os/exec"
-	"path/filepath"
 	"strings"
 	"syscall"
 	"time"
@@ -63,28 +64,24 @@ func displayInfo(agentConfig *Config) {
 }
 
 func ManualInstall(c string, options map[string]string, strictValidations bool) error {
-	dat, err := os.ReadFile(c)
+	ctx, cancel := context.WithCancel(context.Background())
+	defer cancel()
+
+	source, err := prepareConfiguration(ctx, c)
 	if err != nil {
 		return err
 	}
 
-	dir, err := os.MkdirTemp("", "kairos-install")
+	cc, err := config.Scan(config.Directories(source), config.MergeBootLine, config.StrictValidation(strictValidations))
 	if err != nil {
 		return err
 	}
-	defer os.RemoveAll(dir)
-
-	if err := os.WriteFile(filepath.Join(dir, "config.yaml"), dat, 0600); err != nil {
-		return err
-	}
-
-	cc, err := config.Scan(config.Directories(dir), config.MergeBootLine, config.StrictValidation(strictValidations))
-	if err != nil {
-		return err
-	}
-
 	options["cc"] = cc.String()
 
+	if options["device"] == "" {
+		options["device"] = cc.Install.Device
+	}
+
 	return RunInstall(options)
 }
 
@@ -325,3 +322,31 @@ func ensureDataSourceReady() {
 		}
 	}
 }
+
+func prepareConfiguration(ctx context.Context, source string) (string, error) {
+	// if the source is not an url it is already a configuration path
+	if u, err := url.Parse(source); err != nil || u.Scheme == "" {
+		return source, nil
+	}
+
+	// create a configuration file with the source referenced
+	f, err := os.CreateTemp(os.TempDir(), "kairos-install-*.yaml")
+	if err != nil {
+		return "", err
+	}
+
+	// defer cleanup until after parent is done
+	go func() {
+		<-ctx.Done()
+		_ = os.RemoveAll(f.Name())
+	}()
+
+	cfg := config.Config{
+		ConfigURL: source,
+	}
+	if err = yaml.NewEncoder(f).Encode(cfg); err != nil {
+		return "", err
+	}
+
+	return f.Name(), nil
+}

internal/agent/install_test.go

@@ -0,0 +1,54 @@
+package agent
+
+import (
+	"context"
+	"github.com/kairos-io/kairos/pkg/config"
+	"gopkg.in/yaml.v3"
+	"os"
+	"testing"
+
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+)
+
+var _ = Describe("prepareConfiguration", func() {
+	path := "/foo/bar"
+	url := "https://example.com"
+	ctx, cancel := context.WithCancel(context.Background())
+
+	It("returns a file path with no modifications", func() {
+		source, err := prepareConfiguration(ctx, path)
+
+		Expect(err).ToNot(HaveOccurred())
+		Expect(source).To(Equal(path))
+	})
+
+	It("creates a configuration file containing the given url", func() {
+		source, err := prepareConfiguration(ctx, url)
+
+		Expect(err).ToNot(HaveOccurred())
+		Expect(source).ToNot(Equal(path))
+
+		f, err := os.Open(source)
+		Expect(err).ToNot(HaveOccurred())
+
+		var cfg config.Config
+		err = yaml.NewDecoder(f).Decode(&cfg)
+		Expect(err).ToNot(HaveOccurred())
+
+		Expect(cfg.ConfigURL).To(Equal(url))
+	})
+
+	It("cleans up the configuration file after context is done", func() {
+		source, err := prepareConfiguration(ctx, url)
+		cancel()
+
+		_, err = os.Stat(source)
+		Expect(os.IsNotExist(err))
+	})
+})
+
+func TestPrepareConfiguration(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "prepareConfiguration Suite")
+}