[Init] Initial commit - NetMesh terminal manager

lib/zmodemDragDrop.ts

@@ -0,0 +1,97 @@
+import type { DropEntry } from "./sftpFileUtils";
+import { getDropEntryLocalPath } from "./sftpFileUtils";
+import type { Host } from "../types";
+
+const ZMODEM_RZ_MISSING_MARKER_PREFIX = "\x1b]1337;NetcattyRzMissing=";
+const ZMODEM_RZ_MISSING_MARKER_SUFFIX = "\x07";
+
+/**
+ * Default PTY command for drag-drop ZMODEM upload.
+ * lrzsz `rz` defaults to protect mode and will not replace an existing
+ * same-named file; `-y` / `--overwrite` is required (issue #2863).
+ */
+export const ZMODEM_DEFAULT_RZ_UPLOAD_COMMAND = "rz -y\r";
+
+export type ZmodemDragDropFile = {
+  path?: string;
+  name: string;
+  remoteName: string;
+  data?: ArrayBuffer;
+};
+
+export function supportsZmodemTerminalDragDrop(
+  host: Host,
+  isNetworkDevice = false,
+): boolean {
+  if (host.protocol === "local" || isNetworkDevice) return false;
+  if (host.moshEnabled || host.etEnabled) return true;
+  return (
+    host.protocol === "ssh" ||
+    host.protocol === "telnet" ||
+    host.protocol === "serial"
+  );
+}
+
+export function supportsZmodemDragDropSftpFallback(host: Host): boolean {
+  return host.protocol === "ssh" || Boolean(host.moshEnabled || host.etEnabled);
+}
+
+export function getZmodemRemoteName(relativePath: string, fallbackName: string): string {
+  const normalized = relativePath.replace(/\\/g, "/").replace(/^\/+/, "");
+  if (!normalized) return fallbackName;
+  const segments = normalized.split("/").filter(Boolean);
+  return segments[segments.length - 1] || fallbackName;
+}
+
+function quotePosixShellArg(value: string): string {
+  return `'${value.replace(/'/g, "'\\''")}'`;
+}
+
+export function createZmodemRzMissingToken(): string {
+  return `rz-${Date.now().toString(36)}-${Math.random().toString(36).slice(2)}`;
+}
+
+export function buildZmodemDragDropUploadCommand(rzMissingToken: string): string {
+  const markerFormat = `\\033]1337;NetcattyRzMissing=${rzMissingToken}\\007`;
+  const script = `if command -v rz >/dev/null 2>&1; then exec rz -y; else printf ${quotePosixShellArg(markerFormat)}; fi`;
+  return `sh -lc ${quotePosixShellArg(script)}\r`;
+}
+
+export function containsZmodemRzMissingMarker(chunk: string, rzMissingToken: string): boolean {
+  return chunk.includes(`${ZMODEM_RZ_MISSING_MARKER_PREFIX}${rzMissingToken}${ZMODEM_RZ_MISSING_MARKER_SUFFIX}`);
+}
+
+export async function buildZmodemDragDropFiles(
+  dropEntries: DropEntry[],
+): Promise<ZmodemDragDropFile[]> {
+  const files: ZmodemDragDropFile[] = [];
+
+  for (const entry of dropEntries) {
+    if (entry.isDirectory) continue;
+
+    const fileName = entry.file?.name
+      || entry.relativePath.replace(/\\/g, "/").split("/").pop()
+      || entry.relativePath;
+    const remoteName = getZmodemRemoteName(entry.relativePath, fileName);
+    const localPath = getDropEntryLocalPath(entry);
+
+    if (localPath) {
+      files.push({
+        path: localPath,
+        name: fileName,
+        remoteName,
+      });
+      continue;
+    }
+
+    if (!entry.file) continue;
+    const data = await entry.file.arrayBuffer();
+    files.push({
+      name: fileName,
+      remoteName,
+      data,
+    });
+  }
+
+  return files;
+}