authorised fetch: log more details
this will help debugging problems in the implementation; thanks to @ShittyKopper for the suggestion
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@ -162,23 +162,25 @@ export class ActivityPubServerService {
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return true;
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}
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const keyId = new URL(signature.keyId);
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const keyHost = this.utilityService.toPuny(keyId.hostname);
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const logPrefix = `${request.id} ${request.url} (by ${request.headers['user-agent']}) apparently from ${keyHost}:`;
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if (signature.params.headers.indexOf('host') === -1
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|| request.headers.host !== this.config.host) {
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// no destination host, or not us: refuse
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this.authlogger.warn(`${request.id} ${request.url} no destination host, or not us: refuse`);
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this.authlogger.warn(`${logPrefix} no destination host, or not us: refuse`);
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reply.code(401);
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return true;
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}
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const keyId = new URL(signature.keyId);
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const keyHost = this.utilityService.toPuny(keyId.hostname);
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const meta = await this.metaService.fetch();
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if (this.utilityService.isBlockedHost(meta.blockedHosts, keyHost)) {
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/* blocked instance: refuse (we don't care if the signature is
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good, if they even pretend to be from a blocked instance,
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they're out) */
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this.authlogger.warn(`${request.id} ${request.url} instance ${keyHost} is blocked: refuse`);
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this.authlogger.warn(`${logPrefix} instance is blocked: refuse`);
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reply.code(401);
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return true;
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}
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@ -193,13 +195,13 @@ export class ActivityPubServerService {
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/* keyId is often in the shape `${user.uri}#${keyname}`, try
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fetching information about the remote user */
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const candidate = formatURL(keyId, { fragment: false });
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this.authlogger.info(`${request.id} ${request.url} we don't know the user for keyId ${keyId}, trying to fetch via ${candidate}`);
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this.authlogger.info(`${logPrefix} we don't know the user for keyId ${keyId}, trying to fetch via ${candidate}`);
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authUser = await this.apDbResolverService.getAuthUserFromApId(candidate);
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}
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if (authUser?.key == null) {
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// we can't figure out who the signer is, or we can't get their key: refuse
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this.authlogger.warn(`${request.id} ${request.url} we can't figure out who the signer is, or we can't get their key: refuse`);
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this.authlogger.warn(`${logPrefix} we can't figure out who the signer is, or we can't get their key: refuse`);
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reply.code(401);
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return true;
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}
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@ -207,20 +209,20 @@ export class ActivityPubServerService {
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let httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
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if (!httpSignatureValidated) {
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this.authlogger.info(`${request.id} ${request.url} failed to validate signature, re-fetching the key for ${authUser.user.uri}`);
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this.authlogger.info(`${logPrefix} failed to validate signature, re-fetching the key for ${authUser.user.uri}`);
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// maybe they changed their key? refetch it
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authUser.key = await this.apDbResolverService.refetchPublicKeyForApId(authUser.user);
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if (authUser.key != null) {
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httpSignatureValidated = httpSignature.verifySignature(signature, authUser.key.keyPem);
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} else {
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this.authlogger.warn(`${request.id} ${request.url} failed to re-fetch key for ${authUser.user}`);
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this.authlogger.warn(`${logPrefix} failed to re-fetch key for ${authUser.user}`);
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}
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}
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if (!httpSignatureValidated) {
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// bad signature: refuse
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this.authlogger.info(`${request.id} ${request.url} failed to validate signature: refuse`);
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this.authlogger.info(`${logPrefix} failed to validate signature: refuse`);
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reply.code(401);
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return true;
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}
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