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Respond to backup key sharing requests

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This commit is contained in:
Zoe 2020-03-25 14:06:47 +00:00
parent d869ac9a69
commit 4d63c11f26
1 changed files with 25 additions and 10 deletions
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19
src/CrossSigningManager.js
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@ -145,18 +145,33 @@ const onSecretRequested = async function({
console.log(`CrossSigningManager: Ignoring request from untrusted device ${deviceId}`); console.log(`CrossSigningManager: Ignoring request from untrusted device ${deviceId}`);
return; return;
} }
if (name.startsWith("m.cross_signing")) {
const callbacks = client.getCrossSigningCacheCallbacks(); const callbacks = client.getCrossSigningCacheCallbacks();
if (!callbacks.getCrossSigningKeyCache) return; if (!callbacks.getCrossSigningKeyCache) return;
/* Explicit enumeration here is deliberate – never share the master key! */
if (name === "m.cross_signing.self_signing") { if (name === "m.cross_signing.self_signing") {
const key = await callbacks.getCrossSigningKeyCache("self_signing"); const key = await callbacks.getCrossSigningKeyCache("self_signing");
if (!key) { if (!key) {
console.log(`self_signing requested by ${deviceId}, but not found in cache`); console.log(
`self_signing requested by ${deviceId}, but not found in cache`
);
} }
return key && encodeBase64(key); return key && encodeBase64(key);
} else if (name === "m.cross_signing.user_signing") { } else if (name === "m.cross_signing.user_signing") {
const key = await callbacks.getCrossSigningKeyCache("user_signing"); const key = await callbacks.getCrossSigningKeyCache("user_signing");
if (!key) { if (!key) {
console.log(`user_signing requested by ${deviceId}, but not found in cache`); console.log(
`user_signing requested by ${deviceId}, but not found in cache`
);
}
return key && encodeBase64(key);
}
} else if (name === "m.megolm_backup.v1") {
const key = await client._crypto.getSessionBackupPrivateKey();
if (!key) {
console.log(
`session backup key requested by ${deviceId}, but not found in cache`
);
} }
return key && encodeBase64(key); return key && encodeBase64(key);
} }