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Add some simple messaging for parent interaction
Signed-off-by: Victor Seiji Hariki <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,12 @@ | ||
| .vscode/* | ||
|
|
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| # Key for embedding | ||
| key.json | ||
|
|
||
| # NPM things | ||
| package.json | ||
| package-lock.json | ||
| node_modules/ | ||
|
|
||
| # Yarn things | ||
| yarn.lock | ||
| yarn.lock |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,95 @@ | ||
| /** | ||
| * This file should only be actually loaded if we are in a trusted environment. | ||
| */ | ||
| (async () => { | ||
| // Check if key file exists | ||
| const response = await fetch("key.json"); | ||
|
|
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| /** @type {{host?: string, trusted?: boolean, key: string}} */ | ||
| let data = null; | ||
| if (response.status === 200) { | ||
| data = await response.json(); | ||
| console.info("[webui] key.json loaded successfully"); | ||
| } | ||
| if (response.status !== 200 || (!data.key && !data.trusted)) { | ||
| console.warn( | ||
| "[webui] An accessible key.json file with a 'key' or 'trusted' should be provided to allow for messaging" | ||
| ); | ||
| console.warn(data); | ||
| return; | ||
| } | ||
|
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| const key = data.key; | ||
|
|
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| // Check if we are running inside an iframe or embed | ||
| try { | ||
| const frame = window.frameElement; | ||
|
|
||
| if (frame === null) { | ||
| console.info("[webui] Not running inside a frame"); | ||
| } else { | ||
| console.info( | ||
| `[webui] Window is child of '${window.parent.document.URL}'` | ||
| ); | ||
| if (data.host && !window.parent.document.URL.startsWith(data.host)) { | ||
| console.warn( | ||
| `[webui] Window does not trust parent '${window.parent.document.URL}'` | ||
| ); | ||
| console.warn("[webui] Will NOT setup message listeners"); | ||
| return; | ||
| } | ||
| } | ||
| } catch (e) { | ||
| console.warn( | ||
| `[webui] Running in a third party iframe or embed, and blocked by CORS` | ||
| ); | ||
| console.warn(e); | ||
| return; | ||
| } | ||
|
|
||
| if (data) { | ||
| let parentWindow = null; | ||
|
|
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| if (!data.trusted) console.debug(`[webui] Loaded key '${key}'`); | ||
|
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| window.addEventListener("message", ({data, origin, source}) => { | ||
| if (!data.trusted && data.key !== key) { | ||
| console.warn( | ||
| `[webui] Message with incorrect key was received from '${origin}'` | ||
| ); | ||
| console.warn(data); | ||
| return; | ||
| } | ||
|
|
||
| try { | ||
| switch (data.type) { | ||
| case "init": | ||
| parentWindow = source; | ||
| break; | ||
| case "add-resource": | ||
| { | ||
| const image = document.createElement("img"); | ||
| image.src = data.image.dataURL; | ||
| image.onload = () => { | ||
| tools.stamp.state.addResource( | ||
| data.image.resourceName || "External Resource", | ||
| image | ||
| ); | ||
| tools.stamp.enable(); | ||
| }; | ||
| } | ||
| break; | ||
| default: | ||
| console.warn(`[webui] Unsupported message type: ${data.type}`); | ||
| break; | ||
| } | ||
| } catch (e) { | ||
| console.warn( | ||
| `[webui] Message of type '${data.type}' has invalid format` | ||
| ); | ||
| console.warn(e); | ||
| console.warn(data); | ||
| } | ||
| }); | ||
| } | ||
| })(); |
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