remote_status_update.cc | Explore in Territory

// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "chromeos/ash/components/proximity_auth/remote_status_update.h"

#include "chromeos/ash/components/multidevice/logging/logging.h"

namespace {

// The value of the 'type' status update field.
const char kStatusUpdateType[] = "status_update";

// Keys in the serialized RemoteStatusUpdate JSON object.
const char kType[] = "type";
const char kUserPresence[] = "user_presence";
const char kSecureScreenLock[] = "secure_screen_lock";
const char kTrustAgent[] = "trust_agent";

// Values in the serialized RemoteStatusUpdate JSON object.
const char kUserPresent[] = "present";
const char kUserAbsent[] = "absent";
const char kUserPresenceUnknown[] = "unknown";
const char kUserPresenceSecondary[] = "secondary";
const char kUserPresenceBackground[] = "background";

const char kSecureScreenLockEnabled[] = "enabled";
const char kSecureScreenLockDisabled[] = "disabled";
const char kSecureScreenLockStateUnknown[] = "unknown";

const char kTrustAgentEnabled[] = "enabled";
const char kTrustAgentDisabled[] = "disabled";
const char kTrustAgentUnsupported[] = "unsupported";

}  // namespace

namespace proximity_auth {

// static
std::unique_ptr<RemoteStatusUpdate> RemoteStatusUpdate::Deserialize(
    const base::Value::Dict& serialized_value) {
  const std::string* type = serialized_value.FindString(kType);
  if (!type || *type != kStatusUpdateType) {
    PA_LOG(ERROR) << "Unable to parse remote status update: unexpected type. "
                  << "Expected: '" << kStatusUpdateType << "', "
                  << "Saw: '" << *type << "'.";
    return nullptr;
  }

  const std::string* user_presence = serialized_value.FindString(kUserPresence);
  const std::string* secure_screen_lock_state =
      serialized_value.FindString(kSecureScreenLock);
  const std::string* trust_agent_state =
      serialized_value.FindString(kTrustAgent);
  if (!user_presence || !secure_screen_lock_state || !trust_agent_state) {
    PA_LOG(ERROR) << "Unable to parse remote status update: missing data value."
                  << " Status update:\n"
                  << serialized_value;
    return nullptr;
  }

  std::unique_ptr<RemoteStatusUpdate> parsed_update(new RemoteStatusUpdate);
  if (*user_presence == kUserPresent) {
    parsed_update->user_presence = USER_PRESENT;
  } else if (*user_presence == kUserAbsent) {
    parsed_update->user_presence = USER_ABSENT;
  } else if (*user_presence == kUserPresenceUnknown) {
    parsed_update->user_presence = USER_PRESENCE_UNKNOWN;
  } else if (*user_presence == kUserPresenceSecondary) {
    parsed_update->user_presence = USER_PRESENCE_SECONDARY;
  } else if (*user_presence == kUserPresenceBackground) {
    parsed_update->user_presence = USER_PRESENCE_BACKGROUND;
  } else {
    PA_LOG(ERROR)
        << "Unable to parse remote status update: invalid user presence: '"
        << *user_presence << "'.";
    return nullptr;
  }

  if (*secure_screen_lock_state == kSecureScreenLockEnabled) {
    parsed_update->secure_screen_lock_state = SECURE_SCREEN_LOCK_ENABLED;
  } else if (*secure_screen_lock_state == kSecureScreenLockDisabled) {
    parsed_update->secure_screen_lock_state = SECURE_SCREEN_LOCK_DISABLED;
  } else if (*secure_screen_lock_state == kSecureScreenLockStateUnknown) {
    parsed_update->secure_screen_lock_state = SECURE_SCREEN_LOCK_STATE_UNKNOWN;
  } else {
    PA_LOG(ERROR) << "Unable to parse remote status update: invalid secure "
                  << "screen lock state: '" << *secure_screen_lock_state
                  << "'.";
    return nullptr;
  }

  if (*trust_agent_state == kTrustAgentEnabled) {
    parsed_update->trust_agent_state = TRUST_AGENT_ENABLED;
  } else if (*trust_agent_state == kTrustAgentDisabled) {
    parsed_update->trust_agent_state = TRUST_AGENT_DISABLED;
  } else if (*trust_agent_state == kTrustAgentUnsupported) {
    parsed_update->trust_agent_state = TRUST_AGENT_UNSUPPORTED;
  } else {
    PA_LOG(ERROR) << "Unable to parse remote status update: invalid trust "
                  << "agent state: '" << *trust_agent_state << "'.";
    return nullptr;
  }

  return parsed_update;
}

}  // namespace proximity_auth
chromium/chromeos/ash/components/proximity_auth/remote_status_update.cc
