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feat: custom domains for OpenWebUI + fix README issues

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- Add custom domain support in Options page so users can add
  self-hosted AI services (e.g. https://ai.myserver.com)
- Background worker dynamically injects content scripts on
  custom domains using scripting.executeScript
- Add optional_host_permissions so Chrome can grant per-domain access
- Rewrite README: add clone step to Firefox instructions, clarify
  what "credentials" means in step 3, add Windows commands alongside
  Mac/Linux for every terminal step
- Bump version to 0.2.0

https://claude.ai/code/session_01Dvgwe7XMoSxnWXkih8p1Cw
This commit is contained in:
Claude
2026-03-26 00:35:21 +00:00
parent 1fe813337b
commit 60b810b1b9
8 changed files with 286 additions and 118 deletions
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README.md
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@@ -10,7 +10,7 @@ A browser extension (Chrome + Firefox) that intercepts personal information and
| ChatGPT | chatgpt.com, chat.openai.com | Untested |
| Grok | grok.x.ai, x.com/i/grok | Untested |
| Gemini | gemini.google.com | Untested |
| OpenWebUI | localhost, 127.0.0.1 (self-hosted) | Untested |
| OpenWebUI | localhost, 127.0.0.1, or custom domain | Untested |
> **Note:** Only Claude has been tested so far. The other services have API interception patterns defined but may need adjustments. PRs welcome.
@@ -51,83 +51,123 @@ A browser extension (Chrome + Firefox) that intercepts personal information and
### Prerequisites
You need [Git](https://git-scm.com/downloads) and [Node.js](https://nodejs.org/) (v18+) installed.
- [Git](https://git-scm.com/downloads)
- [Node.js](https://nodejs.org/) v18 or newer (needed for Firefox signing only)
### Step 1: Get the code
Open a terminal (Terminal on Mac, Command Prompt or PowerShell on Windows, any terminal on Linux) and run:
Clone the repo:
```bash
git clone https://github.com/outis1one/silent-send.git
cd silent-send
```
### Chrome (Developer Mode)
This downloads the extension code to a `silent-send` folder on your computer.
1. Run `./build.sh chrome` (or just use the root directory directly)
2. Open `chrome://extensions/` in your browser
3. Enable **Developer mode** (toggle in the top right corner)
4. Click **Load unpacked** → navigate to and select the `dist/chrome/` folder (or the repo root)
### Chrome
1. Open `chrome://extensions/` in Chrome
2. Enable **Developer mode** (toggle in the top right corner)
3. Click **Load unpacked**
4. Navigate to the `silent-send` folder you cloned and select it
5. Navigate to any supported AI site — the extension icon appears in your toolbar
That's it for Chrome. No account, no store, no fees.
That's it for Chrome. No build step, no account, no store, no fees.
### Firefox (signed, persistent)
Firefox requires extensions to be cryptographically signed before it will install them permanently. Mozilla provides free self-hosted signing — no store listing, no review process, no fees.
Firefox requires extensions to be cryptographically signed before it will permanently install them. Mozilla provides free signing — no store listing, no review process, no fees. You just need a free Firefox account.
#### Step 1: Create a free Firefox account
1. Go to https://accounts.firefox.com/ and create an account (or sign in if you have one)
1. Go to https://accounts.firefox.com/ and sign up (or sign in if you have one already)
2. This is the same account used for Firefox Sync — you may already have one
#### Step 2: Get your Mozilla API credentials
#### Step 2: Generate your signing keys
1. Go to https://addons.mozilla.org/developers/addon/api/key/
2. Sign in with your Firefox account from step 1
3. On that page you'll see two values:
- **JWT issuer** — this is your API key, looks like `user:12345678:901`
- **JWT secret** — a long alphanumeric string, this is your API secret
4. Keep this page open — you'll need both values in the next step
2. Sign in with your Firefox account
3. You'll see two values on that page:
- **JWT issuer** — looks like `user:12345678:901`
- **JWT secret** — a long string of random characters
4. You need both of these. Copy them or keep the page open.
#### Step 3: Configure your credentials
#### Step 3: Install dependencies and save your signing keys
In your terminal, inside the `silent-send` folder:
**Mac / Linux:**
```bash
# Install dependencies
npm install
# Copy the env template
cp .env.example .env
```
Now open `.env` in any text editor and paste in your values from step 2:
**Windows (Command Prompt):**
```cmd
npm install
copy .env.example .env
```
Now open the `.env` file in any text editor (Notepad, VS Code, etc.) and replace the placeholder values with the two values from step 2:
```
WEB_EXT_API_KEY="user:12345678:901"
WEB_EXT_API_SECRET="your-jwt-secret-here"
```
Save the file.
Save and close the file.
#### Step 4: Build and sign
**Mac / Linux:**
```bash
source .env && npm run sign:firefox
```
This builds the Firefox version and submits it to Mozilla for signing. It takes 10-30 seconds. When done, you'll see a signed `.xpi` file in `dist/firefox-signed/`.
**Windows (Command Prompt):**
```cmd
set /p x= < nul & for /f "tokens=1,* delims==" %a in (.env) do @set %a=%~b
npm run sign:firefox
```
#### Step 5: Install the signed extension
**Windows (PowerShell):**
```powershell
Get-Content .env | ForEach-Object { if ($_ -match '^(.+?)=(.*)$') { [Environment]::SetEnvironmentVariable($matches[1], $matches[2].Trim('"')) } }
npm run sign:firefox
```
This submits the extension to Mozilla for signing (takes 10-30 seconds). When done, you'll find a signed `.xpi` file in `dist/firefox-signed/`.
#### Step 5: Install
- Drag the `.xpi` file into any Firefox window, **or**
- Firefox menu → File → Open File → select the `.xpi`
- Click **Add** when prompted
The signed `.xpi` is **permanent** — it survives browser restarts, updates, everything. No store listing, no review process, no fees. You only need to re-sign when you update to a new version.
Done. The extension is **permanently installed** — survives restarts, updates, everything. You only need to re-sign if you update to a newer version of Silent Send.
### Firefox (temporary, for development)
### Firefox (temporary, no signing needed)
If you just want to try it out without signing:
If you just want to try it out quickly:
**Mac / Linux:**
```bash
npm install && npm run run:firefox
```
This opens a fresh Firefox with the extension pre-loaded. Auto-reloads on file changes. Resets when Firefox closes — useful for testing, not for daily use.
**Windows:**
```cmd
npm install && npm run run:firefox
```
This opens Firefox with the extension pre-loaded. Resets when Firefox closes — useful for testing.
## Custom domains (OpenWebUI, etc.)
If you run OpenWebUI or another AI service on a custom domain (not localhost), go to **Options** → **Custom Domains** and add your domain (e.g. `https://ai.myserver.com`). The extension will activate on those domains too.
For Chrome, you'll need to also grant the extension permission to access the new domain via `chrome://extensions/` → Silent Send → Details → Site access.
## Architecture
@@ -145,7 +185,7 @@ src/
popup/
popup.html/css/js — Quick access: identity, mappings, activity, test mode
options/
options.html/css/js — Full mapping management, import/export, settings
options.html/css/js — Full mapping management, import/export, settings, custom domains
lib/
substitution-engine.js — Core explicit find/replace logic
smart-patterns.js — Auto-detection of emails, names, usernames, hostnames, phones, paths
@@ -157,5 +197,5 @@ src/
- All data stays local in browser storage
- No external servers, no telemetry, no analytics
- The extension only activates on claude.ai
- The extension only activates on supported AI sites (and any custom domains you add)
- Your real identity data never leaves your machine