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firestar5683
fab3ec9aeb
Add Galaxy web assets and client settings interfaces with their bundled vendor notices. Co-authored-by: Danny <dannyirwin31@yahoo.com> Co-authored-by: Prabhaav Pillai <prabhaav@msu.edu> Co-authored-by: dirwin31 <83434411+dirwin31@users.noreply.github.com> Co-authored-by: firestarsdog <229254897+firestarsdog@users.noreply.github.com> Co-authored-by: Dom <168790843+firestar5683@users.noreply.github.com> Co-authored-by: prabhaavp <prabhaav@msu.edu>
36 lines
2.2 KiB
JavaScript
36 lines
2.2 KiB
JavaScript
// Pixels and sprite locations come from the actual onroad renderer, not browser widget copies.
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export async function widgetArtMetadata(blob) {
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const bytes = new Uint8Array(await blob.arrayBuffer())
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const view = new DataView(bytes.buffer, bytes.byteOffset, bytes.byteLength)
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if (bytes.length < 45 || bytes.length > 4 * 1024 * 1024 ||
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![137,80,78,71,13,10,26,10].every((value, index) => bytes[index] === value)) throw new Error("Invalid widget art")
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const text = new TextDecoder(), signature = "starpilot-widget-art\0"
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let metadata = null
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for (let offset = 8; offset + 12 <= bytes.length;) {
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const size = view.getUint32(offset), type = text.decode(bytes.subarray(offset + 4, offset + 8))
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if (size > bytes.length - offset - 12) throw new Error("Invalid widget art chunk")
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if (type === "tEXt") {
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const value = text.decode(bytes.subarray(offset + 8, offset + 8 + size))
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if (value.startsWith(signature)) {
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if (metadata || size > 8192) throw new Error("Invalid widget art metadata")
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metadata = JSON.parse(value.slice(signature.length))
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}
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}
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offset += size + 12
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}
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if (!metadata || metadata.version !== 1 || !Number.isInteger(metadata.width) || !Number.isInteger(metadata.height) ||
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metadata.width < 1 || metadata.width > 1024 || metadata.height < 1 || metadata.height > 1440 ||
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metadata.width !== view.getUint32(16) || metadata.height !== view.getUint32(20) ||
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!metadata.sprites || typeof metadata.sprites !== "object" || Array.isArray(metadata.sprites) ||
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Object.keys(metadata.sprites).length > 7) throw new Error("Invalid widget art metadata")
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for (const [id, rect] of Object.entries(metadata.sprites)) {
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if (!/^[a-z_]+$/.test(id) || !rect || ![rect.x,rect.y,rect.width,rect.height].every(Number.isInteger) ||
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rect.x < 0 || rect.y < 0 || rect.width < 1 || rect.height < 1 ||
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rect.x + rect.width > metadata.width || rect.y + rect.height > metadata.height ||
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!Number.isFinite(rect.offsetX ?? 0) || (rect.offsetX ?? 0) <= -1 || (rect.offsetX ?? 0) > 0 ||
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!Number.isFinite(rect.offsetY ?? 0) || (rect.offsetY ?? 0) <= (id === 'speed_limit_actions' ? -33 : -1) ||
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(rect.offsetY ?? 0) > 0) throw new Error("Invalid widget art rectangle")
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}
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return metadata
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}
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