dsh-inline-media-viewer-plugin

dsh-inline-media-viewer

Inline image, video, and audio previews for DeepSeek Harness Web

English · 简体中文

Turn media paths and URLs mentioned in a DSH conversation into secure inline previews—without copying them out of the chat log.

https://…/view?filename=frame.png  →  <img>
exports/demo.mp4                   →  <video controls>
audio/sound.mp3                    →  <audio controls>

Contents

• Features
• Supported media
• Installation
• Configuration
• Security
• Development
• License

Features

Feature	Description
Inline rendering	Displays images, videos, and audio directly below the chat turn that mentions them.
Workspace-safe reads	Resolves local paths with realpath and rejects traversal, out-of-workspace paths, and symlink escapes.
Optional ComfyUI proxy	Fetches recognized ComfyUI media URLs server-side from the configured origin, including for remote users and HTTPS pages.
Bounded transfers	Limits each file or response to 48 MiB and remote requests to 20 seconds.
User controls	Provides auto-render, per-turn item limit, media height, and optional ComfyUI origin settings.

[!NOTE] ComfyUI is not required. Workspace files and regular HTTP(S) media URLs work when ComfyUI is not installed or running; its proxy is activated only for recognized ComfyUI URLs.

Supported media

Type	Extensions
Images	png, jpg, jpeg, webp, gif, avif, bmp, svg
Video	mp4, webm, mov, m4v, mkv, avi, ogv
Audio	mp3, wav, m4a, aac, ogg, oga, flac, opus

Installation

Targets DSH v0.1.3-alpha.1+ APIs. Host startup and the settings section were verified on v0.1.5-rc.1. End-to-end media playback on v0.1.5-rc.1 has not been verified.

From npm

Install and activate the bundle in your Web profile:

dsh plugin --profile web add @wisdoverse/dsh-inline-media-viewer@1.0.11

Restart the Web profile after installation.

From source

1. Clone the plugin into a location available to your Web profile:

   git clone https://github.com/Wisdoverse/dsh-inline-media-viewer-plugin.git \
     /path/to/local-plugins/dsh-inline-media-viewer
   

2. Add the bundle to profiles/web/package.json:

   {
     "dependencies": {
       "@wisdoverse/dsh-inline-media-viewer": "link:/path/to/local-plugins/dsh-inline-media-viewer"
     },
     "dsh": {
       "profile": {
         "bundles": ["…", "@wisdoverse/dsh-inline-media-viewer"]
       }
     }
   }
   

3. Rebuild or restart the Web profile.

The plugin mounts its host RPC channel, client projection, and settings section through cordis.patch.yml.

Configuration

Open Settings → 媒体预览 / Media preview.

The navigation label and all setting copy follow DSH's active UI language and switch live between English and Chinese.

Setting	Default	Allowed values
Auto-render detected media	On	On / off
Maximum items per turn	12	1–30
Maximum media height	380 px	160–1200 px
ComfyUI origin (optional)	Empty	http(s)://host[:port]

Settings are stored in the DSH settings document. Writes are available only on loopback connections; remote browsers can read settings but cannot persist changes.

ComfyUI origin

• Skip this setting entirely if you do not use ComfyUI.
• Leave the field empty to use http://127.0.0.1:8188.
• Accepted forms are http://host[:port], https://host[:port], and bare host[:port] (http is assumed).
• The default port is 8188 for HTTP and 443 for HTTPS.
• Credentials, paths, query strings, and fragments are rejected.
• The origin must be reachable from the DSH host process. For a containerized host, use the address visible from inside the container.

Local aliases (127.0.0.1:8188 and localhost:8188) and the configured origin are recognized as ComfyUI sources. A non-empty invalid address fails explicitly instead of silently falling back to another target.

Security

The plugin is designed as a local trust helper, not a general-purpose file or network proxy:

• Local reads are confined to the active session's workspace and known media extensions.
• Remote reads can target only the configured ComfyUI origin; redirects are refused.
• Local files and remote responses are capped at 48 MiB.
• Settings writes are restricted to loopback connections.
• The browser receives media as data: URLs rather than filesystem paths.

See SECURITY.md for the complete trust model and known limitations.

Development

Commands

Command	Purpose
node test.mjs	Run the dependency-free unit tests directly.
npm test	Run the same unit test suite through npm.
npm run lint	Syntax-check the host modules and test file.

Project structure

Path	Responsibility
index.js	Host RPC channel, ComfyUI proxy, and settings registration.
lib.js	Pure, dependency-free helpers.
client/client.js	Turn projection, media renderer, and settings UI.
cordis.patch.yml	Bundle mounting and integration points.
test.mjs	Unit tests for the pure helpers.

The running Web profile serves a bundled copy. Rebuild or restart it after changing the source files.

License

Released under the MIT License.