97 lines
2.6 KiB
TypeScript
97 lines
2.6 KiB
TypeScript
import { UserUtils } from '../../session/utils';
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import { fromBase64ToArray } from '../../session/utils/String';
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export class OpenGroupMessageV2 {
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public serverId?: number;
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public sender?: string;
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public sentTimestamp: number;
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public base64EncodedData: string;
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public base64EncodedSignature?: string;
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constructor(messageData: {
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serverId?: number;
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sender?: string;
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sentTimestamp: number;
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base64EncodedData: string;
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base64EncodedSignature?: string;
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}) {
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const {
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base64EncodedData,
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sentTimestamp,
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base64EncodedSignature,
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sender,
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serverId,
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} = messageData;
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this.base64EncodedData = base64EncodedData;
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this.sentTimestamp = sentTimestamp;
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this.base64EncodedSignature = base64EncodedSignature;
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this.sender = sender;
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this.serverId = serverId;
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}
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public static fromJson(json: Record<string, any>) {
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const {
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data: base64EncodedData,
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timestamp: sentTimestamp,
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server_id: serverId,
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public_key: sender,
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signature: base64EncodedSignature,
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} = json;
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if (!base64EncodedData || !sentTimestamp) {
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window?.log?.info('invalid json to build OpenGroupMessageV2');
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throw new Error('OpengroupV2Message fromJson() failed');
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}
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return new OpenGroupMessageV2({
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base64EncodedData,
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base64EncodedSignature,
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sentTimestamp,
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serverId,
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sender,
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});
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}
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public async sign(): Promise<OpenGroupMessageV2> {
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const ourKeyPair = await UserUtils.getIdentityKeyPair();
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if (!ourKeyPair) {
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window?.log?.warn("Couldn't find user X25519 key pair.");
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throw new Error("Couldn't sign message");
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}
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const data = fromBase64ToArray(this.base64EncodedData);
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const signature = await window.libsignal.Curve.async.calculateSignature(
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ourKeyPair.privKey,
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data.buffer
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);
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if (!signature || signature.length === 0) {
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throw new Error("Couldn't sign message");
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}
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const base64Sig = await window.callWorker('arrayBufferToStringBase64', signature);
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return new OpenGroupMessageV2({
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base64EncodedData: this.base64EncodedData,
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sentTimestamp: this.sentTimestamp,
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base64EncodedSignature: base64Sig,
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sender: this.sender,
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serverId: this.serverId,
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});
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}
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public toJson() {
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const json = {
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data: this.base64EncodedData,
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timestamp: this.sentTimestamp,
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} as Record<string, any>;
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if (this.serverId) {
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json.server_id = this.serverId;
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}
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if (this.sender) {
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json.public_key = this.sender;
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}
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if (this.base64EncodedSignature) {
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json.signature = this.base64EncodedSignature;
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}
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return json;
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}
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}
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