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HAPIPAccessory.c
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// Copyright (c) 2015-2019 The HomeKit ADK Contributors
//
// Licensed under the Apache License, Version 2.0 (the “License”);
// you may not use this file except in compliance with the License.
// See [CONTRIBUTORS.md] for the list of HomeKit ADK project authors.
#include "HAP+Internal.h"
static const HAPLogObject logObject = { .subsystem = kHAP_LogSubsystem, .category = "IPAccessory" };
/**
* Default maximum number of bytes if the characteristic format is "string".
*
* @see See HomeKit Accessory Protocol Specification R14
* Table 6-3 Properties of Characteristic Objects in JSON
*/
#define kHAPIPAccessorySerialization_DefaultMaxStringBytes ((size_t) 64)
/**
* Default maximum number of bytes if the characteristic format is "data".
*
* @see See HomeKit Accessory Protocol Specification R14
* Table 6-3 Properties of Characteristic Objects in JSON
*/
#define kHAPIPAccessorySerialization_DefaultMaxDataBytes ((size_t) 2097152)
/**
* Accessory serialization state.
*/
HAP_ENUM_BEGIN(uint8_t, HAPIPAccessorySerializationState) {
kHAPIPAccessorySerializationState_ResponseObject_Begin,
kHAPIPAccessorySerializationState_ResponseObject_End,
kHAPIPAccessorySerializationState_AccessoriesArray_Name,
kHAPIPAccessorySerializationState_AccessoriesArray_NameSeparator,
kHAPIPAccessorySerializationState_AccessoriesArray_Begin,
kHAPIPAccessorySerializationState_AccessoriesArray_End,
kHAPIPAccessorySerializationState_AccessoryObject_Begin,
kHAPIPAccessorySerializationState_AccessoryObject_End,
kHAPIPAccessorySerializationState_AccessoryObject_Separator,
kHAPIPAccessorySerializationState_AccessoryID_Name,
kHAPIPAccessorySerializationState_AccessoryID_NameSeparator,
kHAPIPAccessorySerializationState_AccessoryID_Value,
kHAPIPAccessorySerializationState_AccessoryID_ValueSeparator,
kHAPIPAccessorySerializationState_ServicesArray_Name,
kHAPIPAccessorySerializationState_ServicesArray_NameSeparator,
kHAPIPAccessorySerializationState_ServicesArray_Begin,
kHAPIPAccessorySerializationState_ServicesArray_End,
kHAPIPAccessorySerializationState_ServiceObject_Begin,
kHAPIPAccessorySerializationState_ServiceObject_End,
kHAPIPAccessorySerializationState_ServiceObject_Separator,
kHAPIPAccessorySerializationState_ServiceID_Name,
kHAPIPAccessorySerializationState_ServiceID_NameSeparator,
kHAPIPAccessorySerializationState_ServiceID_Value,
kHAPIPAccessorySerializationState_ServiceID_ValueSeparator,
kHAPIPAccessorySerializationState_ServiceType_Name,
kHAPIPAccessorySerializationState_ServiceType_NameSeparator,
kHAPIPAccessorySerializationState_ServiceType_Value,
kHAPIPAccessorySerializationState_ServiceType_ValueSeparator,
kHAPIPAccessorySerializationState_ServicePropertyPrimary_Name,
kHAPIPAccessorySerializationState_ServicePropertyPrimary_NameSeparator,
kHAPIPAccessorySerializationState_ServicePropertyPrimary_Value,
kHAPIPAccessorySerializationState_ServicePropertyPrimary_ValueSeparator,
kHAPIPAccessorySerializationState_ServicePropertyHidden_Name,
kHAPIPAccessorySerializationState_ServicePropertyHidden_NameSeparator,
kHAPIPAccessorySerializationState_ServicePropertyHidden_Value,
kHAPIPAccessorySerializationState_ServicePropertyHidden_ValueSeparator,
kHAPIPAccessorySerializationState_LinkedServicesArray_Name,
kHAPIPAccessorySerializationState_LinkedServicesArray_NameSeparator,
kHAPIPAccessorySerializationState_LinkedServicesArray_Begin,
kHAPIPAccessorySerializationState_LinkedServicesArray_End,
kHAPIPAccessorySerializationState_LinkedServicesArray_ValueSeparator,
kHAPIPAccessorySerializationState_LinkedServiceID_Value,
kHAPIPAccessorySerializationState_LinkedServiceID_Separator,
kHAPIPAccessorySerializationState_CharacteristicsArray_Name,
kHAPIPAccessorySerializationState_CharacteristicsArray_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicsArray_Begin,
kHAPIPAccessorySerializationState_CharacteristicsArray_End,
kHAPIPAccessorySerializationState_CharacteristicsObject_Begin,
kHAPIPAccessorySerializationState_CharacteristicObject_End,
kHAPIPAccessorySerializationState_CharacteristicObject_Separator,
kHAPIPAccessorySerializationState_CharacteristicID_Name,
kHAPIPAccessorySerializationState_CharacteristicID_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicID_Value,
kHAPIPAccessorySerializationState_CharacteristicID_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicType_Name,
kHAPIPAccessorySerializationState_CharacteristicType_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicType_Value,
kHAPIPAccessorySerializationState_CharacteristicType_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicFormat_Name,
kHAPIPAccessorySerializationState_CharacteristicFormat_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicFormat_Value,
kHAPIPAccessorySerializationState_CharacteristicFormat_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicValue_Name,
kHAPIPAccessorySerializationState_CharacteristicValue_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicValue_Value,
kHAPIPAccessorySerializationState_CharacteristicValue_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Name,
kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Begin,
kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_End,
kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicPermission_Value,
kHAPIPAccessorySerializationState_CharacteristicPermission_Separator,
kHAPIPAccessorySerializationState_CharacteristicEventNotifications_Name,
kHAPIPAccessorySerializationState_CharacteristicEventNotifications_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicEventNotifications_Value,
kHAPIPAccessorySerializationState_CharacteristicEventNotifications_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicDescription_Name,
kHAPIPAccessorySerializationState_CharacteristicDescription_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicDescription_Value,
kHAPIPAccessorySerializationState_CharacteristicDescription_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicUnit_Name,
kHAPIPAccessorySerializationState_CharacteristicUnit_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicUnit_Value,
kHAPIPAccessorySerializationState_CharacteristicUnit_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicMinimumValue_Name,
kHAPIPAccessorySerializationState_CharacteristicMinimumValue_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicMinimumValue_Value,
kHAPIPAccessorySerializationState_CharacteristicMinimumValue_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicMaximumValue_Name,
kHAPIPAccessorySerializationState_CharacteristicMaximumValue_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicMaximumValue_Value,
kHAPIPAccessorySerializationState_CharacteristicMaximumValue_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicStepValue_Name,
kHAPIPAccessorySerializationState_CharacteristicStepValue_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicStepValue_Value,
kHAPIPAccessorySerializationState_CharacteristicStepValue_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicMaxLength_Name,
kHAPIPAccessorySerializationState_CharacteristicMaxLength_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicMaxLength_Value,
kHAPIPAccessorySerializationState_CharacteristicMaxDataLength_Name,
kHAPIPAccessorySerializationState_CharacteristicMaxDataLength_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicMaxDataLength_Value,
kHAPIPAccessorySerializationState_CharacteristicValidValuesArray_Name,
kHAPIPAccessorySerializationState_CharacteristicValidValuesArray_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicValidValuesArray_Begin,
kHAPIPAccessorySerializationState_CharacteristicValidValuesArray_End,
kHAPIPAccessorySerializationState_CharacteristicValidValuesArray_ValueSeparator,
kHAPIPAccessorySerializationState_CharacteristicValidValue_Value,
kHAPIPAccessorySerializationState_CharacteristicValidValue_Separator,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangesArray_Name,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangesArray_NameSeparator,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangesArray_Begin,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangesArray_End,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangeArray_Begin,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangeArray_End,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangeArray_Separator,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangeStart_Value,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRangeEnd_Value,
kHAPIPAccessorySerializationState_CharacteristicValidValuesRange_Separator,
kHAPIPAccessorySerializationState_ResponseIsComplete
} HAP_ENUM_END(uint8_t, HAPIPAccessorySerializationState);
void HAPIPAccessoryCreateSerializationContext(HAPIPAccessorySerializationContext* context) {
HAPPrecondition(context);
HAPRawBufferZero(context, sizeof *context);
}
bool HAPIPAccessorySerializationIsComplete(HAPIPAccessorySerializationContext* context) {
HAPPrecondition(context);
return context->state == kHAPIPAccessorySerializationState_ResponseIsComplete;
}
/**
* Gets the current accessory in the given serialization context.
*
* @param context Serialization context.
* @param server_ Accessory server.
*
* @return Current accessory or NULL if all accessories have been serialized.
*/
static const HAPAccessory* _Nullable GetCurrentAcessory(
HAPIPAccessorySerializationContext* context,
HAPAccessoryServerRef* server_) {
HAPPrecondition(context);
HAPPrecondition(server_);
HAPAccessoryServer* server = (HAPAccessoryServer*) server_;
HAPPrecondition(server->primaryAccessory);
return context->accessoryIndex == 0 ?
server->primaryAccessory :
(server->ip.bridgedAccessories ? server->ip.bridgedAccessories[context->accessoryIndex - 1] : NULL);
}
/**
* Gets the current service in the given serialization context.
*
* @param context Serialization context.
* @param server Accessory server.
*
* @return Current service or NULL if all services of the current accessory have been serialized.
*/
static const HAPService* _Nullable GetCurrentService(
HAPIPAccessorySerializationContext* context,
HAPAccessoryServerRef* server) {
HAPPrecondition(context);
HAPPrecondition(server);
const HAPAccessory* accessory = GetCurrentAcessory(context, server);
HAPAssert(accessory);
return accessory->services[context->serviceIndex];
}
/**
* Gets the current characteristic in the given serialization context.
*
* @param context Serialization context.
* @param server Accessory server.
*
* @return Current characteristic or NULL if all characteristics of the current service have been serialized.
*/
static const HAPCharacteristic* _Nullable GetCurrentCharacteristic(
HAPIPAccessorySerializationContext* context,
HAPAccessoryServerRef* server) {
HAPPrecondition(context);
HAPPrecondition(server);
const HAPService* service = GetCurrentService(context, server);
HAPAssert(service);
return service->characteristics[context->characteristicIndex];
}
HAP_RESULT_USE_CHECK
HAPError HAPIPAccessorySerializeReadResponse(
HAPIPAccessorySerializationContext* context,
HAPAccessoryServerRef* server_,
HAPIPSessionDescriptorRef* session,
char* bytes,
size_t minBytes,
size_t maxBytes,
size_t* numBytes) {
HAPPrecondition(context);
HAPPrecondition(context->state != kHAPIPAccessorySerializationState_ResponseIsComplete);
HAPPrecondition(server_);
HAPAccessoryServer* server = (HAPAccessoryServer*) server_;
HAPPrecondition(server->primaryAccessory);
HAPPrecondition(session);
HAPPrecondition(bytes);
HAPPrecondition(minBytes >= 1);
HAPPrecondition(maxBytes >= minBytes);
HAPPrecondition(numBytes);
HAPError err;
// See HomeKit Accessory Protocol Specification R14
// Section 6.3 HAP Objects
// See HomeKit Accessory Protocol Specification R14
// Section 6.6.4 Example Accessory Attribute Database in JSON
// For the JSON Data Interchange Format, see RFC 7159.
// http://www.rfc-editor.org/rfc/rfc7159.txt
char scratchBytes[64];
#define GET_CURRENT_ACCESSORY() GetCurrentAcessory(context, server_)
#define GET_CURRENT_SERVICE() GetCurrentService(context, server_)
#define GET_CURRENT_CHARACTERISTIC() ((const HAPBaseCharacteristic*) GetCurrentCharacteristic(context, server_))
#define APPEND_STRING_OR_RETURN_ERROR(string) \
do { \
HAPAssert(*numBytes <= maxBytes); \
size_t numStringBytes = HAPStringGetNumBytes(string); \
if (maxBytes - *numBytes < numStringBytes) { \
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response."); \
return kHAPError_OutOfResources; \
} \
HAPRawBufferCopyBytes(&bytes[*numBytes], string, numStringBytes); \
*numBytes += numStringBytes; \
HAPAssert(*numBytes <= maxBytes); \
} while (0)
#define APPEND_UUID_OR_RETURN_ERROR(uuid) \
do { \
HAPAssert(*numBytes <= maxBytes); \
HAPAssert(sizeof scratchBytes >= 2); \
err = HAPUUIDGetDescription(uuid, &scratchBytes[1], sizeof scratchBytes - 2); \
HAPAssert(!err); \
size_t numScratchBytes = HAPStringGetNumBytes(&scratchBytes[1]) + 2; \
scratchBytes[0] = '"'; \
scratchBytes[numScratchBytes - 1] = '"'; \
if (maxBytes - *numBytes < numScratchBytes) { \
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response."); \
return kHAPError_OutOfResources; \
} \
HAPRawBufferCopyBytes(&bytes[*numBytes], scratchBytes, numScratchBytes); \
*numBytes += numScratchBytes; \
HAPAssert(*numBytes <= maxBytes); \
} while (0)
#define APPEND_UINT64_OR_RETURN_ERROR(value) \
do { \
HAPAssert(*numBytes <= maxBytes); \
err = HAPUInt64GetDescription(value, scratchBytes, sizeof scratchBytes); \
HAPAssert(!err); \
size_t numScratchBytes = HAPStringGetNumBytes(scratchBytes); \
if (maxBytes - *numBytes < numScratchBytes) { \
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response."); \
return kHAPError_OutOfResources; \
} \
HAPRawBufferCopyBytes(&bytes[*numBytes], scratchBytes, numScratchBytes); \
*numBytes += numScratchBytes; \
HAPAssert(*numBytes <= maxBytes); \
} while (0)
#define APPEND_INT32_OR_RETURN_ERROR(value) \
do { \
HAPAssert(*numBytes <= maxBytes); \
err = HAPStringWithFormat(scratchBytes, sizeof scratchBytes, "%ld", (long) value); \
HAPAssert(!err); \
size_t numScratchBytes = HAPStringGetNumBytes(scratchBytes); \
if (maxBytes - *numBytes < numScratchBytes) { \
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response."); \
return kHAPError_OutOfResources; \
} \
HAPRawBufferCopyBytes(&bytes[*numBytes], scratchBytes, numScratchBytes); \
*numBytes += numScratchBytes; \
HAPAssert(*numBytes <= maxBytes); \
} while (0)
#define APPEND_FLOAT_OR_RETURN_ERROR(value) \
do { \
HAPAssert(*numBytes <= maxBytes); \
err = HAPJSONUtilsGetFloatDescription(value, scratchBytes, sizeof scratchBytes); \
HAPAssert(!err); \
size_t numScratchBytes = HAPStringGetNumBytes(scratchBytes); \
if (maxBytes - *numBytes < numScratchBytes) { \
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response."); \
return kHAPError_OutOfResources; \
} \
HAPRawBufferCopyBytes(&bytes[*numBytes], scratchBytes, numScratchBytes); \
*numBytes += numScratchBytes; \
HAPAssert(*numBytes <= maxBytes); \
} while (0)
*numBytes = 0;
do {
HAPAssert(sizeof context->state == sizeof(HAPIPAccessorySerializationState));
switch ((HAPIPAccessorySerializationState) context->state) {
case kHAPIPAccessorySerializationState_ResponseObject_Begin: {
APPEND_STRING_OR_RETURN_ERROR("{");
context->state = kHAPIPAccessorySerializationState_AccessoriesArray_Name;
}
continue;
case kHAPIPAccessorySerializationState_ResponseObject_End: {
APPEND_STRING_OR_RETURN_ERROR("}");
context->state = kHAPIPAccessorySerializationState_ResponseIsComplete;
}
continue;
case kHAPIPAccessorySerializationState_AccessoriesArray_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"accessories\"");
context->state = kHAPIPAccessorySerializationState_AccessoriesArray_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_AccessoriesArray_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_AccessoriesArray_Begin;
}
continue;
case kHAPIPAccessorySerializationState_AccessoriesArray_Begin: {
APPEND_STRING_OR_RETURN_ERROR("[");
context->accessoryIndex = 0;
context->state = kHAPIPAccessorySerializationState_AccessoryObject_Begin;
}
continue;
case kHAPIPAccessorySerializationState_AccessoriesArray_End: {
APPEND_STRING_OR_RETURN_ERROR("]");
context->state = kHAPIPAccessorySerializationState_ResponseObject_End;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryObject_Begin: {
APPEND_STRING_OR_RETURN_ERROR("{");
context->state = kHAPIPAccessorySerializationState_AccessoryID_Name;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryObject_End: {
APPEND_STRING_OR_RETURN_ERROR("}");
HAPAssert(context->accessoryIndex < UINT8_MAX);
context->accessoryIndex++;
if (context->accessoryIndex == 1) {
if (server->ip.bridgedAccessories && server->ip.bridgedAccessories[0]) {
context->state = kHAPIPAccessorySerializationState_AccessoryObject_Separator;
} else {
context->state = kHAPIPAccessorySerializationState_AccessoriesArray_End;
}
} else {
HAPAssert(server->ip.bridgedAccessories);
if (server->ip.bridgedAccessories[context->accessoryIndex - 1]) {
context->state = kHAPIPAccessorySerializationState_AccessoryObject_Separator;
} else {
context->state = kHAPIPAccessorySerializationState_AccessoriesArray_End;
}
}
}
continue;
case kHAPIPAccessorySerializationState_AccessoryObject_Separator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_AccessoryObject_Begin;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryID_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"aid\"");
context->state = kHAPIPAccessorySerializationState_AccessoryID_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryID_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_AccessoryID_Value;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryID_Value: {
const HAPAccessory* accessory = GET_CURRENT_ACCESSORY();
HAPAssert(accessory);
APPEND_UINT64_OR_RETURN_ERROR(accessory->aid);
context->state = kHAPIPAccessorySerializationState_AccessoryID_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_AccessoryID_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_ServicesArray_Name;
}
continue;
case kHAPIPAccessorySerializationState_ServicesArray_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"services\"");
context->state = kHAPIPAccessorySerializationState_ServicesArray_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServicesArray_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_ServicesArray_Begin;
}
continue;
case kHAPIPAccessorySerializationState_ServicesArray_Begin: {
APPEND_STRING_OR_RETURN_ERROR("[");
const HAPAccessory* accessory = GET_CURRENT_ACCESSORY();
HAPAssert(accessory);
const HAPService* const* services = accessory->services;
HAPAssert(services);
context->serviceIndex = 0;
const HAPService* service = services[context->serviceIndex];
while (service && !HAPAccessoryServerSupportsService(server_, kHAPTransportType_IP, service)) {
HAPAssert(context->serviceIndex < UINT8_MAX);
context->serviceIndex++;
service = services[context->serviceIndex];
}
if (service) {
context->state = kHAPIPAccessorySerializationState_ServiceObject_Begin;
} else {
context->state = kHAPIPAccessorySerializationState_ServicesArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_ServicesArray_End: {
APPEND_STRING_OR_RETURN_ERROR("]");
context->state = kHAPIPAccessorySerializationState_AccessoryObject_End;
}
continue;
case kHAPIPAccessorySerializationState_ServiceObject_Begin: {
APPEND_STRING_OR_RETURN_ERROR("{");
context->state = kHAPIPAccessorySerializationState_ServiceID_Name;
}
continue;
case kHAPIPAccessorySerializationState_ServiceObject_End: {
APPEND_STRING_OR_RETURN_ERROR("}");
const HAPAccessory* accessory = GET_CURRENT_ACCESSORY();
HAPAssert(accessory);
const HAPService* const* services = accessory->services;
HAPAssert(services);
const HAPService* service;
do {
HAPAssert(context->serviceIndex < UINT8_MAX);
context->serviceIndex++;
service = services[context->serviceIndex];
} while (service && !HAPAccessoryServerSupportsService(server_, kHAPTransportType_IP, service));
if (service) {
context->state = kHAPIPAccessorySerializationState_ServiceObject_Separator;
} else {
context->state = kHAPIPAccessorySerializationState_ServicesArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_ServiceObject_Separator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_ServiceObject_Begin;
}
continue;
case kHAPIPAccessorySerializationState_ServiceID_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"iid\"");
context->state = kHAPIPAccessorySerializationState_ServiceID_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServiceID_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_ServiceID_Value;
}
continue;
case kHAPIPAccessorySerializationState_ServiceID_Value: {
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
APPEND_UINT64_OR_RETURN_ERROR(service->iid);
context->state = kHAPIPAccessorySerializationState_ServiceID_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServiceID_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_ServiceType_Name;
}
continue;
case kHAPIPAccessorySerializationState_ServiceType_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"type\"");
context->state = kHAPIPAccessorySerializationState_ServiceType_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServiceType_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_ServiceType_Value;
}
continue;
case kHAPIPAccessorySerializationState_ServiceType_Value: {
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
APPEND_UUID_OR_RETURN_ERROR(service->serviceType);
context->state = kHAPIPAccessorySerializationState_ServiceType_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServiceType_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_ServicePropertyPrimary_Name;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyPrimary_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"primary\"");
context->state = kHAPIPAccessorySerializationState_ServicePropertyPrimary_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyPrimary_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_ServicePropertyPrimary_Value;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyPrimary_Value: {
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
APPEND_STRING_OR_RETURN_ERROR(service->properties.primaryService ? "true" : "false");
context->state = kHAPIPAccessorySerializationState_ServicePropertyPrimary_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyPrimary_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_ServicePropertyHidden_Name;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyHidden_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"hidden\"");
context->state = kHAPIPAccessorySerializationState_ServicePropertyHidden_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyHidden_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_ServicePropertyHidden_Value;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyHidden_Value: {
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
APPEND_STRING_OR_RETURN_ERROR(service->properties.hidden ? "true" : "false");
context->state = kHAPIPAccessorySerializationState_ServicePropertyHidden_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_ServicePropertyHidden_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_Name;
}
continue;
case kHAPIPAccessorySerializationState_LinkedServicesArray_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"linked\"");
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_LinkedServicesArray_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_Begin;
}
continue;
case kHAPIPAccessorySerializationState_LinkedServicesArray_Begin: {
APPEND_STRING_OR_RETURN_ERROR("[");
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
const uint16_t* linkedServices = service->linkedServices;
if (linkedServices) {
context->index = 0;
if (linkedServices[context->index]) {
context->state = kHAPIPAccessorySerializationState_LinkedServiceID_Value;
} else {
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_End;
}
} else {
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_LinkedServicesArray_End: {
APPEND_STRING_OR_RETURN_ERROR("]");
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_LinkedServicesArray_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicsArray_Name;
}
continue;
case kHAPIPAccessorySerializationState_LinkedServiceID_Value: {
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
const uint16_t* linkedServices = service->linkedServices;
HAPAssert(linkedServices);
HAPAssert(linkedServices[context->index]);
APPEND_UINT64_OR_RETURN_ERROR(linkedServices[context->index]);
HAPAssert(context->index < UINT8_MAX);
context->index++;
if (linkedServices[context->index]) {
context->state = kHAPIPAccessorySerializationState_LinkedServiceID_Separator;
} else {
context->state = kHAPIPAccessorySerializationState_LinkedServicesArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_LinkedServiceID_Separator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_LinkedServiceID_Value;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicsArray_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"characteristics\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicsArray_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicsArray_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicsArray_Begin;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicsArray_Begin: {
APPEND_STRING_OR_RETURN_ERROR("[");
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
const HAPCharacteristic* const* characteristics = service->characteristics;
HAPAssert(characteristics);
context->characteristicIndex = 0;
const HAPBaseCharacteristic* characteristic = characteristics[context->characteristicIndex];
while (characteristic && !HAPIPCharacteristicIsSupported(characteristic)) {
HAPAssert(context->characteristicIndex < UINT8_MAX);
context->characteristicIndex++;
characteristic = characteristics[context->characteristicIndex];
}
if (characteristic) {
context->state = kHAPIPAccessorySerializationState_CharacteristicsObject_Begin;
} else {
context->state = kHAPIPAccessorySerializationState_CharacteristicsArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicsArray_End: {
APPEND_STRING_OR_RETURN_ERROR("]");
context->state = kHAPIPAccessorySerializationState_ServiceObject_End;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicsObject_Begin: {
APPEND_STRING_OR_RETURN_ERROR("{");
context->state = kHAPIPAccessorySerializationState_CharacteristicID_Name;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicObject_End: {
APPEND_STRING_OR_RETURN_ERROR("}");
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
const HAPCharacteristic* const* characteristics = service->characteristics;
HAPAssert(characteristics);
const HAPBaseCharacteristic* characteristic;
do {
HAPAssert(context->characteristicIndex < UINT8_MAX);
context->characteristicIndex++;
characteristic = characteristics[context->characteristicIndex];
} while (characteristic && !HAPIPCharacteristicIsSupported(characteristic));
if (characteristic) {
context->state = kHAPIPAccessorySerializationState_CharacteristicObject_Separator;
} else {
context->state = kHAPIPAccessorySerializationState_CharacteristicsArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicObject_Separator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicsObject_Begin;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicID_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"iid\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicID_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicID_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicID_Value;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicID_Value: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
APPEND_UINT64_OR_RETURN_ERROR(baseCharacteristic->iid);
context->state = kHAPIPAccessorySerializationState_CharacteristicID_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicID_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicType_Name;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicType_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"type\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicType_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicType_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicType_Value;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicType_Value: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
APPEND_UUID_OR_RETURN_ERROR(baseCharacteristic->characteristicType);
context->state = kHAPIPAccessorySerializationState_CharacteristicType_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicType_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicFormat_Name;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicFormat_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"format\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicFormat_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicFormat_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicFormat_Value;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicFormat_Value: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
switch (baseCharacteristic->format) {
case kHAPCharacteristicFormat_Bool: {
APPEND_STRING_OR_RETURN_ERROR("\"bool\"");
} break;
case kHAPCharacteristicFormat_UInt8: {
APPEND_STRING_OR_RETURN_ERROR("\"uint8\"");
} break;
case kHAPCharacteristicFormat_UInt16: {
APPEND_STRING_OR_RETURN_ERROR("\"uint16\"");
} break;
case kHAPCharacteristicFormat_UInt32: {
APPEND_STRING_OR_RETURN_ERROR("\"uint32\"");
} break;
case kHAPCharacteristicFormat_UInt64: {
APPEND_STRING_OR_RETURN_ERROR("\"uint64\"");
} break;
case kHAPCharacteristicFormat_Int: {
APPEND_STRING_OR_RETURN_ERROR("\"int\"");
} break;
case kHAPCharacteristicFormat_Float: {
APPEND_STRING_OR_RETURN_ERROR("\"float\"");
} break;
case kHAPCharacteristicFormat_String: {
APPEND_STRING_OR_RETURN_ERROR("\"string\"");
} break;
case kHAPCharacteristicFormat_TLV8: {
APPEND_STRING_OR_RETURN_ERROR("\"tlv8\"");
} break;
case kHAPCharacteristicFormat_Data: {
APPEND_STRING_OR_RETURN_ERROR("\"data\"");
} break;
}
context->state = kHAPIPAccessorySerializationState_CharacteristicFormat_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicFormat_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
if (baseCharacteristic->properties.readable) {
context->state = kHAPIPAccessorySerializationState_CharacteristicValue_Name;
} else {
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Name;
}
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicValue_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"value\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicValue_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicValue_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicValue_Value;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicValue_Value: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
HAPAssert(baseCharacteristic->properties.readable);
HAPIPSessionReadResult readResult;
HAPAssert(*numBytes <= maxBytes);
if (maxBytes - *numBytes < 2) {
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response.");
return kHAPError_OutOfResources;
}
// Buffer 'bytes' has enough capacity to store at least an empty string including quotation marks.
HAPIPByteBuffer dataBuffer;
dataBuffer.data = &bytes[*numBytes + 1]; // Leave space for beginning quotation mark.
dataBuffer.position = 0;
dataBuffer.limit = maxBytes - *numBytes - 2; // Leave space for ending quotation mark.
dataBuffer.capacity = dataBuffer.limit;
HAPAssert(dataBuffer.data);
HAPAssert(dataBuffer.position <= dataBuffer.limit);
HAPAssert(dataBuffer.limit <= dataBuffer.capacity);
const HAPAccessory* accessory = GET_CURRENT_ACCESSORY();
HAPAssert(accessory);
const HAPService* service = GET_CURRENT_SERVICE();
HAPAssert(service);
HAPIPSessionHandleReadRequest(
session,
kHAPIPSessionContext_GetAccessories,
baseCharacteristic,
service,
accessory,
&readResult,
&dataBuffer);
if (HAPUUIDAreEqual(
baseCharacteristic->characteristicType, &kHAPCharacteristicType_ProgrammableSwitchEvent)) {
// A read of this characteristic must always return a null value for IP accessories.
// See HomeKit Accessory Protocol Specification R14
// Section 9.75 Programmable Switch Event
HAPLogCharacteristicInfo(
&logObject,
baseCharacteristic,
service,
accessory,
"Sending null value (readHandler callback is only called for HAP events).");
APPEND_STRING_OR_RETURN_ERROR("null");
} else if (
baseCharacteristic->properties.ip.controlPoint &&
(baseCharacteristic->format == kHAPCharacteristicFormat_TLV8)) {
APPEND_STRING_OR_RETURN_ERROR("\"\"");
} else if (readResult.status != 0) {
if (baseCharacteristic->format == kHAPCharacteristicFormat_TLV8) {
HAPLogCharacteristicInfo(
&logObject,
baseCharacteristic,
service,
accessory,
"Read handler failed with error. Sending empty TLV value.");
APPEND_STRING_OR_RETURN_ERROR("\"\"");
} else {
APPEND_STRING_OR_RETURN_ERROR("null");
}
} else {
switch (baseCharacteristic->format) {
case kHAPCharacteristicFormat_Bool: {
APPEND_STRING_OR_RETURN_ERROR(readResult.value.unsignedIntValue ? "1" : "0");
} break;
case kHAPCharacteristicFormat_UInt8:
case kHAPCharacteristicFormat_UInt16:
case kHAPCharacteristicFormat_UInt32:
case kHAPCharacteristicFormat_UInt64: {
APPEND_UINT64_OR_RETURN_ERROR(readResult.value.unsignedIntValue);
} break;
case kHAPCharacteristicFormat_Int: {
APPEND_INT32_OR_RETURN_ERROR(readResult.value.intValue);
} break;
case kHAPCharacteristicFormat_Float: {
APPEND_FLOAT_OR_RETURN_ERROR(readResult.value.floatValue);
} break;
case kHAPCharacteristicFormat_String:
case kHAPCharacteristicFormat_TLV8:
case kHAPCharacteristicFormat_Data: {
err = HAPJSONUtilsEscapeStringData(
HAPNonnull(readResult.value.stringValue.bytes),
dataBuffer.limit,
&readResult.value.stringValue.numBytes);
if (err) {
HAPAssert(err == kHAPError_OutOfResources);
HAPLogError(&logObject, "Not enough resources to serialize GET /accessories response.");
return err;
}
bytes[*numBytes] = '"';
bytes[*numBytes + 1 + readResult.value.stringValue.numBytes] = '"';
*numBytes += 1 + readResult.value.stringValue.numBytes + 1;
} break;
}
}
HAPAssert(*numBytes <= maxBytes);
context->state = kHAPIPAccessorySerializationState_CharacteristicValue_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicValue_ValueSeparator: {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Name;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Name: {
APPEND_STRING_OR_RETURN_ERROR("\"perms\"");
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_NameSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_NameSeparator: {
APPEND_STRING_OR_RETURN_ERROR(":");
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Begin;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_Begin: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
APPEND_STRING_OR_RETURN_ERROR("[");
context->index = 0;
if (context->index < HAPCharacteristicGetNumEnabledProperties(baseCharacteristic)) {
context->state = kHAPIPAccessorySerializationState_CharacteristicPermission_Value;
} else {
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_End;
}
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_End: {
APPEND_STRING_OR_RETURN_ERROR("]");
context->state = kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_ValueSeparator;
}
continue;
case kHAPIPAccessorySerializationState_CharacteristicPermissionsArray_ValueSeparator: {
const HAPBaseCharacteristic* baseCharacteristic = GET_CURRENT_CHARACTERISTIC();
HAPAssert(baseCharacteristic);
if (baseCharacteristic->properties.readable) {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicEventNotifications_Name;
} else if (baseCharacteristic->manufacturerDescription) {
APPEND_STRING_OR_RETURN_ERROR(",");
context->state = kHAPIPAccessorySerializationState_CharacteristicDescription_Name;