Add SSH Key Management

internal/dis/component/ssh2/api.go

@@ -0,0 +1,58 @@
+package ssh2
+
+import (
+	"context"
+	"net/http"
+
+	"github.com/FAU-CDI/wisski-distillery/internal/dis/component"
+	"github.com/FAU-CDI/wisski-distillery/pkg/httpx"
+	gossh "golang.org/x/crypto/ssh"
+)
+
+func (ssh2 *SSH2) Routes() component.Routes {
+	return component.Routes{
+		Prefix:   "/authorized_keys/",
+		Exact:    true,
+		Internal: true,
+	}
+}
+func (ssh2 *SSH2) HandleRoute(ctx context.Context, path string) (http.Handler, error) {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		// fetch the global keys
+		gkeys, err := ssh2.Dependencies.Keys.Admin(r.Context())
+		if err != nil {
+			httpx.TextInterceptor.Intercept(w, r, err)
+			return
+		}
+
+		// find the host
+		slug, ok := ssh2.Config.SlugFromHost(r.Host)
+		if slug == "" || !ok {
+			httpx.TextInterceptor.Intercept(w, r, httpx.ErrNotFound)
+			return
+		}
+
+		// fetch the instance
+		instance, err := ssh2.Dependencies.Instances.WissKI(r.Context(), slug)
+		if err != nil {
+			httpx.TextInterceptor.Intercept(w, r, httpx.ErrNotFound)
+			return
+		}
+
+		// fetch the instance keys
+		keys, err := instance.SSH().Keys(r.Context())
+		if err != nil {
+			httpx.TextInterceptor.Intercept(w, r, err)
+			return
+		}
+
+		// marshal out everything!
+		for _, key := range gkeys {
+			w.Write(gossh.MarshalAuthorizedKey(key))
+		}
+		for _, key := range keys {
+			w.Write(gossh.MarshalAuthorizedKey(key))
+		}
+
+	}), nil
+}