update

internal/app/authorization.go

@@ -336,7 +336,7 @@ func (s *Server) handleRevokeAuthorization(w http.ResponseWriter, r *http.Reques
 func (s *Server) handleUpsertPackage(w http.ResponseWriter, r *http.Request) {
 	tech, _ := s.currentTechnician(r)
 	fields := []string{
-		"slug", "display_name", "package_name", "package_version", "file_name", "sha256",
+		"slug", "display_name", "package_version", "file_name", "sha256",
 	}
 	values := make(map[string]string)
 	for _, field := range fields {
@@ -348,7 +348,6 @@ func (s *Server) handleUpsertPackage(w http.ResponseWriter, r *http.Request) {
 	}
 	if !validSlug(values["slug"]) ||
 		len(values["display_name"]) > 255 ||
-		!validRegistrySegment(values["package_name"], 255) ||
 		!validRegistrySegment(values["package_version"], 100) ||
 		!validRegistrySegment(values["file_name"], 255) ||
 		!validSHA256(values["sha256"]) {
@@ -360,7 +359,7 @@ func (s *Server) handleUpsertPackage(w http.ResponseWriter, r *http.Request) {
 		r,
 		values["slug"],
 		values["display_name"],
-		values["package_name"],
+		values["slug"],
 		values["package_version"],
 		values["file_name"],
 		strings.ToLower(values["sha256"]),

internal/app/static/app.css

@@ -24,7 +24,7 @@ body {
     #091211;
 }
 
-button, input { font: inherit; }
+button, input, select { font: inherit; }
 button:disabled { cursor: wait; opacity: .58; }
 
 .topbar {
@@ -110,7 +110,7 @@ h2 { margin-bottom: 0; font-size: 1.4rem; letter-spacing: -.02em; }
 .stack.compact { padding: 0; }
 
 label, legend { color: var(--muted); font-size: .78rem; font-weight: 750; letter-spacing: .045em; text-transform: uppercase; }
-input {
+input, select {
   width: 100%;
   margin-top: 8px;
   padding: 12px 13px;
@@ -120,7 +120,7 @@ input {
   outline: none;
   background: #0a1514;
 }
-input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(88, 224, 173, .12); }
+input:focus, select:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(88, 224, 173, .12); }
 .field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
 
 fieldset { display: grid; gap: 10px; padding: 0; border: 0; }
@@ -211,6 +211,7 @@ dd { margin: 4px 0 0; overflow-wrap: anywhere; }
 .empty, .fine-print { color: var(--muted); }
 .package-forms { display: grid; gap: 26px; }
 .form-title { margin: 0; color: var(--ink); font-weight: 850; }
+.form-help { margin: 0; color: var(--muted); font-size: .82rem; line-height: 1.55; }
 .upload-status { min-height: 1.2em; margin: 0; color: var(--amber); overflow-wrap: anywhere; }
 .manual-metadata { padding-top: 22px; border-top: 1px solid var(--line); }
 .manual-metadata summary { color: var(--accent); cursor: pointer; font-weight: 750; }

internal/app/static/app.js

@@ -37,10 +37,15 @@ document.addEventListener("submit", async (event) => {
     if (!response.ok) {
       throw new Error(result.error || `Upload failed with HTTP ${response.status}`);
     }
-    status.textContent = `Uploaded ${result.filename}; SHA-256 ${result.sha256}`;
-    window.setTimeout(() => {
-      window.location.assign("/portal?notice=Package+uploaded+and+registered");
-    }, 900);
+    if (result.warning) {
+      status.textContent = `${result.warning} The replacement is active; see the audit trail for details.`;
+      button.disabled = false;
+    } else {
+      status.textContent = `Uploaded ${result.filename}; SHA-256 ${result.sha256}`;
+      window.setTimeout(() => {
+        window.location.assign("/portal?notice=Package+uploaded+and+registered");
+      }, 900);
+    }
   } catch (error) {
     status.textContent = error.message;
     button.disabled = false;

internal/app/templates/portal.html

@@ -181,18 +181,37 @@
         </div>
 
         <div class="package-forms">
+          {{if .Packages}}
           <form action="/portal/packages/upload" method="post" enctype="multipart/form-data" class="stack compact" data-upload-form>
             <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
-            <p class="form-title">Upload a new version</p>
-            <label>Slug <input name="slug" placeholder="sentinelone-linux" pattern="[a-z0-9_-]+" required></label>
+            <input type="hidden" name="mode" value="update">
+            <p class="form-title">Update a package</p>
+            <label>Package
+              <select name="slug" required>
+                {{range .Packages}}
+                <option value="{{.Slug}}">{{.DisplayName}} ({{.Slug}} · {{.PackageVersion}})</option>
+                {{end}}
+              </select>
+            </label>
+            <label>New version <input name="package_version" placeholder="26.2.0.10" required></label>
+            <label class="toggle"><input type="checkbox" name="enabled" value="1" checked> Enable after upload</label>
+            <label>Replacement installer <input name="package_file" type="file" required></label>
+            <p class="form-help">The package ID stays the same. After the replacement is registered, its prior Gitea version is removed. Codes created for the prior version must be revoked and reissued.</p>
+            <button class="button primary" type="submit">Replace current package</button>
+            <p class="upload-status" data-upload-status aria-live="polite"></p>
+          </form>
+          {{end}}
+
+          <form action="/portal/packages/upload" method="post" enctype="multipart/form-data" class="stack compact" data-upload-form>
+            <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
+            <input type="hidden" name="mode" value="create">
+            <p class="form-title">Add a protected package</p>
+            <label>Package ID <input name="slug" placeholder="sentinelone-linux" pattern="[a-z0-9_-]+" required></label>
             <label>Display name <input name="display_name" placeholder="SentinelOne Linux Agent" required></label>
-            <div class="field-row">
-              <label>Registry package <input name="package_name" placeholder="sentinelone-linux" required></label>
-              <label>New version <input name="package_version" placeholder="26.2.0.10" required></label>
-            </div>
+            <label>Version <input name="package_version" placeholder="26.2.0.10" required></label>
             <label class="toggle"><input type="checkbox" name="enabled" value="1" checked> Enable after upload</label>
             <label>Installer file <input name="package_file" type="file" required></label>
-            <button class="button primary" type="submit">Upload and register package</button>
+            <button class="button secondary" type="submit">Upload new package</button>
             <p class="upload-status" data-upload-status aria-live="polite"></p>
           </form>
 
@@ -200,12 +219,9 @@
             <summary>Register package metadata manually</summary>
             <form action="/portal/packages" method="post" class="stack compact">
               <input type="hidden" name="csrf_token" value="{{.CSRFToken}}">
-              <label>Slug <input name="slug" placeholder="sentinelone-linux" pattern="[a-z0-9_-]+" required></label>
+              <label>Package ID <input name="slug" placeholder="sentinelone-linux" pattern="[a-z0-9_-]+" required></label>
               <label>Display name <input name="display_name" placeholder="SentinelOne Linux Agent" required></label>
-              <div class="field-row">
-                <label>Registry package <input name="package_name" placeholder="sentinelone-linux" required></label>
-                <label>Version <input name="package_version" placeholder="26.1.1.31" required></label>
-              </div>
+              <label>Version <input name="package_version" placeholder="26.1.1.31" required></label>
               <label>Filename <input name="file_name" placeholder="SentinelAgent_linux_x86_64.deb" required></label>
               <label>SHA-256 <input name="sha256" minlength="64" maxlength="64" placeholder="64 hexadecimal characters" required></label>
               <label class="toggle"><input type="checkbox" name="enabled" value="1"> Enable for new authorizations</label>

internal/app/upload.go

@@ -2,6 +2,7 @@ package app
 
 import (
 	"crypto/sha256"
+	"database/sql"
 	"encoding/hex"
 	"errors"
 	"fmt"
@@ -15,6 +16,17 @@ const uploadFormOverhead = 1 << 20
 
 type byteCounter int64
 
+type packageUploadTarget struct {
+	Slug            string
+	DisplayName     string
+	PackageName     string
+	PackageVersion  string
+	PreviousName    string
+	PreviousVersion string
+	Enabled         bool
+	Replacing       bool
+}
+
 func (counter *byteCounter) Write(value []byte) (int, error) {
 	*counter += byteCounter(len(value))
 	return len(value), nil
@@ -67,13 +79,20 @@ func (s *Server) handleUploadPackage(w http.ResponseWriter, r *http.Request) {
 			writeJSON(w, http.StatusBadRequest, map[string]string{"error": "invalid package filename"})
 			return
 		}
-		if err := validateUploadFields(fields); err != nil {
+		target, status, err := s.preparePackageUpload(r, fields)
+		if err != nil {
 			_ = part.Close()
-			writeJSON(w, http.StatusBadRequest, map[string]string{"error": err.Error()})
+			writeJSON(w, status, map[string]string{"error": err.Error()})
 			return
 		}
 
-		checksum, size, status, err := s.streamPackageToGitea(r, fields, fileName, part)
+		checksum, size, status, err := s.streamPackageToGitea(
+			r,
+			target.PackageName,
+			target.PackageVersion,
+			fileName,
+			part,
+		)
 		_ = part.Close()
 		if err != nil {
 			var maxBytesError *http.MaxBytesError
@@ -85,32 +104,53 @@ func (s *Server) handleUploadPackage(w http.ResponseWriter, r *http.Request) {
 			return
 		}
 
-		enabled := fields["enabled"] == "1"
 		if err := s.savePackage(
 			r,
-			fields["slug"],
-			fields["display_name"],
-			fields["package_name"],
-			fields["package_version"],
+			target.Slug,
+			target.DisplayName,
+			target.PackageName,
+			target.PackageVersion,
 			fileName,
 			checksum,
-			enabled,
+			target.Enabled,
 		); err != nil {
+			_ = s.deletePackageVersion(r, target.PackageName, target.PackageVersion)
 			_ = s.audit(r.Context(), "package_upload_failed", tech.Login, nil, "", fields["slug"], s.clientIP(r), err.Error())
 			writeJSON(w, http.StatusInternalServerError, map[string]string{"error": "package uploaded but catalog update failed"})
 			return
 		}
+
+		warning := ""
+		if target.Replacing {
+			if err := s.deletePackageVersion(r, target.PreviousName, target.PreviousVersion); err != nil {
+				warning = fmt.Sprintf(
+					"Package updated, but Gitea could not remove superseded version %s: %s",
+					target.PreviousVersion,
+					err,
+				)
+				_ = s.audit(
+					r.Context(),
+					"package_cleanup_failed",
+					tech.Login,
+					nil,
+					"",
+					target.Slug,
+					s.clientIP(r),
+					warning,
+				)
+			}
+		}
 		_ = s.audit(
 			r.Context(),
-			"package_uploaded",
+			map[bool]string{true: "package_updated", false: "package_uploaded"}[target.Replacing],
 			tech.Login,
 			nil,
 			"",
-			fields["slug"],
+			target.Slug,
 			s.clientIP(r),
 			fmt.Sprintf(
 				"version=%s filename=%s bytes=%d sha256=%s enabled=%t",
-				fields["package_version"], fileName, size, checksum, enabled,
+				target.PackageVersion, fileName, size, checksum, target.Enabled,
 			),
 		)
 		writeJSON(w, http.StatusCreated, map[string]any{
@@ -118,25 +158,62 @@ func (s *Server) handleUploadPackage(w http.ResponseWriter, r *http.Request) {
 			"sha256":   checksum,
 			"bytes":    size,
 			"filename": fileName,
+			"warning":  warning,
 		})
 		return
 	}
 }
 
-func validateUploadFields(fields map[string]string) error {
+func (s *Server) preparePackageUpload(
+	r *http.Request,
+	fields map[string]string,
+) (packageUploadTarget, int, error) {
+	var target packageUploadTarget
 	if !validSlug(fields["slug"]) {
-		return errors.New("invalid package slug")
-	}
-	if fields["display_name"] == "" || len(fields["display_name"]) > 255 {
-		return errors.New("invalid display name")
-	}
-	if !validRegistrySegment(fields["package_name"], 255) {
-		return errors.New("invalid registry package name")
+		return target, http.StatusBadRequest, errors.New("invalid package ID")
 	}
 	if !validRegistrySegment(fields["package_version"], 100) {
-		return errors.New("invalid package version")
+		return target, http.StatusBadRequest, errors.New("invalid package version")
 	}
-	return nil
+
+	target.Slug = fields["slug"]
+	target.PackageVersion = fields["package_version"]
+	target.Enabled = fields["enabled"] == "1"
+
+	err := s.db.QueryRowContext(
+		r.Context(),
+		`SELECT display_name, package_name, package_version
+		   FROM packages
+		  WHERE slug = ?`,
+		target.Slug,
+	).Scan(&target.DisplayName, &target.PackageName, &target.PreviousVersion)
+	switch {
+	case err == nil:
+		if fields["mode"] == "create" {
+			return target, http.StatusConflict, errors.New("that package ID already exists; use Update package")
+		}
+		if target.PackageVersion == target.PreviousVersion {
+			return target, http.StatusConflict, errors.New("new version must differ from the current version")
+		}
+		target.PreviousName = target.PackageName
+		target.Replacing = true
+	case errors.Is(err, sql.ErrNoRows):
+		if fields["mode"] == "update" {
+			return target, http.StatusNotFound, errors.New("package ID was not found")
+		}
+		target.DisplayName = fields["display_name"]
+		if target.DisplayName == "" || len(target.DisplayName) > 255 {
+			return target, http.StatusBadRequest, errors.New("invalid display name")
+		}
+		target.PackageName = target.Slug
+	default:
+		return target, http.StatusInternalServerError, errors.New("unable to read package catalog")
+	}
+
+	if !validRegistrySegment(target.PackageName, 255) {
+		return target, http.StatusInternalServerError, errors.New("catalog contains an invalid registry package name")
+	}
+	return target, http.StatusOK, nil
 }
 
 func validRegistrySegment(value string, maxLength int) bool {
@@ -157,7 +234,8 @@ func validRegistrySegment(value string, maxLength int) bool {
 
 func (s *Server) streamPackageToGitea(
 	r *http.Request,
-	fields map[string]string,
+	packageName string,
+	packageVersion string,
 	fileName string,
 	source io.Reader,
 ) (string, int64, int, error) {
@@ -166,8 +244,8 @@ func (s *Server) streamPackageToGitea(
 		fmt.Sprintf(
 			"/api/packages/%s/generic/%s/%s/%s",
 			url.PathEscape(s.cfg.GiteaPackageOwner),
-			url.PathEscape(fields["package_name"]),
-			url.PathEscape(fields["package_version"]),
+			url.PathEscape(packageName),
+			url.PathEscape(packageVersion),
 			url.PathEscape(fileName),
 		),
 	)
@@ -204,3 +282,40 @@ func (s *Server) streamPackageToGitea(
 	}
 	return hex.EncodeToString(hasher.Sum(nil)), int64(size), http.StatusCreated, nil
 }
+
+func (s *Server) deletePackageVersion(
+	r *http.Request,
+	packageName string,
+	packageVersion string,
+) error {
+	registryURL := joinURL(
+		s.cfg.GiteaURL,
+		fmt.Sprintf(
+			"/api/packages/%s/generic/%s/%s",
+			url.PathEscape(s.cfg.GiteaPackageOwner),
+			url.PathEscape(packageName),
+			url.PathEscape(packageVersion),
+		),
+	)
+	request, err := http.NewRequestWithContext(r.Context(), http.MethodDelete, registryURL, nil)
+	if err != nil {
+		return errors.New("unable to prepare registry cleanup")
+	}
+	request.SetBasicAuth(s.cfg.GiteaWriteUser, s.cfg.GiteaWriteToken)
+
+	response, err := s.packageClient.Do(request)
+	if err != nil {
+		return errors.New("package registry cleanup failed")
+	}
+	defer response.Body.Close()
+	_, _ = io.Copy(io.Discard, io.LimitReader(response.Body, 8192))
+
+	switch response.StatusCode {
+	case http.StatusNoContent, http.StatusNotFound:
+		return nil
+	case http.StatusUnauthorized, http.StatusForbidden:
+		return errors.New("package registry rejected the publisher credentials")
+	default:
+		return fmt.Errorf("package registry returned %s", response.Status)
+	}
+}

internal/app/upload_test.go

@@ -68,10 +68,8 @@ func TestStreamPackageToGitea(t *testing.T) {
 	request := httptest.NewRequest(http.MethodPost, "/portal/packages/upload", nil)
 	checksum, size, status, err := server.streamPackageToGitea(
 		request,
-		map[string]string{
-			"package_name":    "sentinelone-linux",
-			"package_version": "26.2.0.10",
-		},
+		"sentinelone-linux",
+		"26.2.0.10",
 		"agent.deb",
 		strings.NewReader(content),
 	)
@@ -89,3 +87,39 @@ func TestStreamPackageToGitea(t *testing.T) {
 		t.Errorf("status = %d", status)
 	}
 }
+
+func TestDeletePackageVersion(t *testing.T) {
+	t.Parallel()
+	registry := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		if r.Method != http.MethodDelete {
+			t.Errorf("method = %s, want DELETE", r.Method)
+		}
+		if r.URL.Path != "/api/packages/TAI/generic/sentinelone-linux/26.1.1.31" {
+			t.Errorf("path = %s", r.URL.Path)
+		}
+		username, password, ok := r.BasicAuth()
+		if !ok || username != "publisher" || password != "write-token" {
+			t.Errorf("unexpected registry credentials")
+		}
+		w.WriteHeader(http.StatusNoContent)
+	}))
+	defer registry.Close()
+
+	registryURL, err := url.Parse(registry.URL)
+	if err != nil {
+		t.Fatal(err)
+	}
+	server := &Server{
+		cfg: Config{
+			GiteaURL:          registryURL,
+			GiteaPackageOwner: "TAI",
+			GiteaWriteUser:    "publisher",
+			GiteaWriteToken:   "write-token",
+		},
+		packageClient: registry.Client(),
+	}
+	request := httptest.NewRequest(http.MethodPost, "/portal/packages/upload", nil)
+	if err := server.deletePackageVersion(request, "sentinelone-linux", "26.1.1.31"); err != nil {
+		t.Fatal(err)
+	}
+}