Method getIdentitiesReply

lib/agent.js:871–957

(req, keys)

      return respond(this, req, buf);
    }
    getIdentitiesReply(req, keys) {
      if (this[SYM_MODE] !== ROLE_SERVER)
        throw new Error('Server-only method called with client role');

      if (!(req instanceof AgentInboundRequest))
        throw new Error('Wrong request argument');

      if (req.hasResponded())
        return true;

      /*
         byte        SSH_AGENT_IDENTITIES_ANSWER
         uint32      nkeys

        where `nkeys` is 0 or more of:
         string      key blob
         string      comment
      */

      if (req.getType() !== SSH_AGENTC_REQUEST_IDENTITIES)
        throw new Error('Invalid response to request');

      if (!Array.isArray(keys))
        throw new Error('Keys argument must be an array');

      let totalKeysLen = 4; // Include `nkeys` size

      const newKeys = [];
      for (let i = 0; i < keys.length; ++i) {
        const entry = keys[i];
        if (typeof entry !== 'object' || entry === null)
          throw new Error(`Invalid key entry: ${entry}`);

        let pubKey;
        let comment;
        if (isParsedKey(entry)) {
          pubKey = entry;
        } else if (isParsedKey(entry.pubKey)) {
          pubKey = entry.pubKey;
        } else {
          if (typeof entry.pubKey !== 'object' || entry.pubKey === null)
            continue;
          ({ pubKey, comment } = entry.pubKey);
          pubKey = parseKey(pubKey);
          if (pubKey instanceof Error)
            continue; // TODO: add debug output
        }
        comment = pubKey.comment || comment;
        pubKey = pubKey.getPublicSSH();

        totalKeysLen += 4 + pubKey.length;

        if (comment && typeof comment === 'string')
          comment = Buffer.from(comment);
        else if (!Buffer.isBuffer(comment))
          comment = EMPTY_BUF;

        totalKeysLen += 4 + comment.length;