1 /* ****************************************************************
3 * Copyright 2017 Samsung Electronics All Rights Reserved.
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at
9 * http://www.apache.org/licenses/LICENSE-2.0
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
17 ******************************************************************/
19 #ifndef __ST_THINGS_H__
20 #define __ST_THINGS_H__
25 #ifdef __ST_THINGS_RTOS__
26 #include <st_things/st_things_types.h>
28 #include "st_things_types.h"
29 #endif // __ST_THINGS_RTOS__
33 #endif /* __cplusplus */
36 * @brief Set prefix paths (ReadOnly and ReadWrite) for configuration files for the device.
37 * This is Optional API, and should be used if relative location is used in
38 * filePath variable in JSON Configuration file.
39 * @param[in] ro_path Prefix Path for Read Only directory location.
40 * @param[in] rw_path Prefix Path for Read Write directory location.
41 * @return @c 0 on success, otherwise a negative error value
42 * @retval #ST_THINGS_ERROR_NONE Successful
43 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter(both ro_path and rw_path are NULL).
44 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
45 * @retval #ST_THINGS_ERROR_STACK_ALREADY_INITIALIZED Stack already initialized.
46 * To set Prefix Paths, stack should be deinitilized first by calling st_things_deinitialize().
47 * @retval #ST_THINGS_ERROR_STACK_RUNNING Stack is currently running.
48 * To set Prefix Paths, stack should be stopped first by calling st_things_stop()
49 * and then deinitialized by calling st_things_deinitialize().
51 int st_things_set_configuration_prefix_path(const char* ro_path, const char* rw_path);
54 * @brief Initializes things stack and returns whether easy-setup is completed or not.
55 * Easy-setup enable users to acquire the ownership of things and to connect the things with the cloud.
56 * After performing easy-setup, users can access things from anywhere through the cloud.
57 * In things stack, easy-setup is a primary and the first operation to be performed on the thing.
58 * Application running on the thing can know whether easy-setup is done already or not.
59 * If easy-setup is done, app can start the things stack by calling st_things_start().
60 * If easy-setup is not done, app can either wait for the user interaction before starting the things stack or
61 * start the things stack directly without waiting for any events(This case is for those things which doesn't
62 * support input capability and for all other unknown cases).
63 * To use a new json file after initialization, stack should be deinitialized
64 * and stopped(if its started already).
65 * @param[in] json_path Path to Json file which defines a thing. Definition includes the device information,
66 * resources and their properties, configuration info for connectivity and easy-setup, etc.
67 * @param[out] easysetup_complete Indicates whether easysetup is completed already or not.
68 * @return @c 0 on success, otherwise a negative error value
69 * @retval #ST_THINGS_ERROR_NONE Successful
70 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
71 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
72 * @retval #ST_THINGS_ERROR_STACK_ALREADY_INITIALIZED Stack already initialized.
73 * To initialize again, stack should be deinitilized first by calling st_things_deinitialize().
74 * @retval #ST_THINGS_ERROR_STACK_RUNNING Stack is currently running.
75 * To initialize again, stack should be stopped first by calling st_things_stop()
76 * and then deinitialized by calling st_things_deinitialize().
78 int st_things_initialize(const char *json_path, bool *easysetup_complete);
81 * @brief Deinitializes things stack.
82 * Stack should have been initialized before calling this API.
83 * @return @c 0 on success, otherwise a negative error value
84 * @retval #ST_THINGS_ERROR_NONE Successful
85 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
86 * @retval #ST_THINGS_ERROR_STACK_NOT_INITIALIZED Stack is not initialized.
87 * Initialize the stack by calling st_things_initialize().
88 * @retval #ST_THINGS_ERROR_STACK_RUNNING Stack is currently running.
89 * Before deinitialize, stack needs to be stopped by calling st_things_stop().
91 int st_things_deinitialize(void);
94 * @brief Callback for handling GET request.
95 * @param[in] req_msg GET request message.
96 * @param[out] resp_rep Representation that will be set to payload of response.
97 * @return @c true in case of success, otherwise @c false
99 typedef bool (*st_things_get_request_cb)(st_things_get_request_message_s *req_msg, st_things_representation_s *resp_rep);
102 * @brief Callback for handling SET(POST) request.
103 * @param[in] req_msg SET request message.
104 * @param[out] resp_rep Representation that will be set to payload of response.
105 * @return @c true in case of success, otherwise @c false
107 typedef bool (*st_things_set_request_cb)(st_things_set_request_message_s *req_msg, st_things_representation_s *resp_rep);
110 * @brief Callback registration function for handling request messages.
111 * @details The callbacks ensure that a request message will be carried with one of the resource uris from json file of st_things_start().
112 * @remarks Only one callback function can be set with this API.\n
113 * If multiple callbacks are set, the last one is registered only.\n
114 * And the callbacks are called in the internal thread, which is not detached,\n
115 * so application should return it to get the next callbacks.
116 * @param[in] get_cb Reference of the callback function to handle GET request.
117 * @param[in] set_cb Reference of the callback function to handle SET(POST) request.
118 * @return @c 0 on success, otherwise a negative error value
119 * @retval #ST_THINGS_ERROR_NONE Successful
120 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
121 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
123 int st_things_register_request_cb(st_things_get_request_cb get_cb, st_things_set_request_cb set_cb);
126 * @brief Starts things stack.
127 * Parses the thing definition(whose path is passed to st_things_initialize(), configures the thing,
128 * creates the resources and prepares it for easy-setup.
129 * If easy-setup is not done yet, onboarding will be started using either SoftAP or BLE connection.
130 * Onboarding creates an ad-hoc network between the thing and the client for performing easy-setup.
131 * If easy-setup is already done, thing will be connected with the cloud.
132 * Application can know whether easy-setup is done or not through st_things_initialize API.
133 * Stack should have been initialized before calling this API.
134 * @return @c 0 on success, otherwise a negative error value
135 * @retval #ST_THINGS_ERROR_NONE Successful.
136 * It is also used for the case that the stack is started already.
137 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
138 * @retval #ST_THINGS_ERROR_STACK_NOT_INITIALIZED Stack is not initialized.
139 * Initialize the stack by calling st_things_initialize().
141 int st_things_start(void);
144 * @brief Stops things stack.
145 * Removes all the data being used internally and releases all the memory allocated for the stack.
146 * Stack should have been initialized and started before calling this API.
147 * @return @c 0 on success, otherwise a negative error value
148 * @retval #ST_THINGS_ERROR_NONE Successful
149 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
150 * @retval #ST_THINGS_ERROR_STACK_NOT_INITIALIZED Stack is not initialized.
151 * Initialize the stack by calling st_things_initialize().
152 * @retval #ST_THINGS_ERROR_STACK_NOT_STARTED Stack is not started.
153 * Start the stack by calling st_things_start().
155 int st_things_stop(void);
158 * @brief Callback for getting user's opinion regarding device reset.
159 * @return @c true to confirm, otherwise @c to deny
161 typedef bool (*st_things_reset_confirm_cb)(void);
164 * @brief Callback for carrying the result of reset.
165 * @param[in] is_success Result of Stack-reset. (true : success, false : failure)
167 typedef void (*st_things_reset_result_cb)(bool is_success);
170 * @brief Callback registration function for Reset-Confirmation and Reset-Result functions.
171 * @remarks Only one callback function can be set with this API.\n
172 * If multiple callbacks are set, the last one is registered only.\n
173 And the callbacks are called in the internal thread, which is not detached,\n
174 * so application should return it to get the next callbacks.
175 * @param[in] confirm_cb Callback function that will be called to get the user's input when reset is triggered.
176 * @param[in] result_cb Callback function that will be called after the reset process is done.
177 * This parameter can be NULL if notification for result of reset is not needed.
178 * @return @c 0 on success, otherwise a negative error value
179 * @retval #ST_THINGS_ERROR_NONE Successful
180 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
181 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
183 int st_things_register_reset_cb(st_things_reset_confirm_cb confirm_cb, st_things_reset_result_cb result_cb);
186 * @brief Reset all the data related to security and cloud being used in the stack.
187 * Stack should have been initialized and started before calling this API.
188 * @return @c 0 on success, otherwise a negative error value
189 * @retval #ST_THINGS_ERROR_NONE Successful
190 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
191 * @retval #ST_THINGS_ERROR_STACK_NOT_INITIALIZED Stack is not intialized.
192 * Initialize the stack by calling st_things_initialize().
193 * @retval #ST_THINGS_ERROR_STACK_NOT_STARTED Stack is not started.
194 * Start the stack by calling st_things_start().
196 int st_things_reset(void);
199 * @brief Callback for carrying the randomly generated PIN info.
200 * @details Device should show the PIN on display.
201 * @param[in] pin_data PIN data in string format.
202 * @param[in] pin_size Length of the PIN String.
204 typedef void (*st_things_pin_generated_cb)(const char *pin_data, const size_t pin_size);
207 * @brief Callback for informing the application to close the PIN display.
209 typedef void (*st_things_pin_display_close_cb)(void);
212 * @brief Callback registration function for getting randomly generated PIN for the PIN-Based Ownership Transfer Request.
213 * @remarks Only one callback function can be set with this API.\n
214 * If multiple callbacks are set, the last one is registered only.\n
215 * And the callbacks are called in the internal thread, which is not detached,\n
216 * so application should return it to get the next callbacks.
217 * @param[in] generated_cb Callback function that will be called when device receives a Ownership Transfer request from client.
218 * @param[in] close_cb Callback function that will be called when Ownership Transfer is done so device can stop showing PIN on display.
219 * This parameter can be NULL if stop triggering is not needed.
220 * @return @c 0 on success, otherwise a negative error value
221 * @retval #ST_THINGS_ERROR_NONE Successful
222 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
223 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
225 int st_things_register_pin_handling_cb(st_things_pin_generated_cb generated_cb, st_things_pin_display_close_cb close_cb);
228 * @brief Callback for getting user's input regarding mutual verification.
229 * @return @c true true in cse of confirmed, otherwise @c false
231 typedef bool (*st_things_user_confirm_cb)(void);
234 * @brief Callback registration function for getting user confirmation for MUTUAL VERIFICATION BASED JUST WORK Ownership transfer.
235 * @remarks Only one callback function can be set with this API.\n
236 * If multiple callbacks are set, the last one is registered only.\n
237 * And the callbacks are called in the internal thread, which is not detached,\n
238 * so application should return it to get the next callbacks.
239 * @param[in] confirm_cb Callback function that will be called when device receives a confirm request from client.
240 * @return @c 0 on success, otherwise a negative error value
241 * @retval #ST_THINGS_ERROR_NONE Successful
242 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
243 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
245 int st_things_register_user_confirm_cb(st_things_user_confirm_cb confirm_cb);
248 * @brief Callback for getting the current state of ST Things.
249 * @param[in] things_status ST Things State
251 typedef void (*st_things_status_change_cb)(st_things_status_e things_status);
254 * @brief Callback registration function for getting notified when ST Things state changes.
255 * @remarks Only one callback function can be set with this API.\n
256 * If multiple callbacks are set, the last one is registered only.\n
257 * And the callbacks are called in the internal thread, which is not detached,\n
258 * so application should return it to get the next callbacks.
259 * @param[in] status_cb Refernce of the callback function to get ST Things status
260 * @return @c 0 on success, otherwise a negative error value
261 * @retval #ST_THINGS_ERROR_NONE Successful
262 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
263 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
265 int st_things_register_things_status_change_cb(st_things_status_change_cb status_cb);
268 * @brief Notify the observers of a specific resource.
269 * Stack should have been initialized and started before calling this API.
270 * @param[in] resource_uri Resource URI of the resource which will be notified to observers.
271 * @return @c 0 on success, otherwise a negative error value
272 * @retval #ST_THINGS_ERROR_NONE Successful
273 * @retval #ST_THINGS_ERROR_INVALID_PARAMETER Invalid parameter
274 * @retval #ST_THINGS_ERROR_OPERATION_FAILED Operation failed
275 * @retval #ST_THINGS_ERROR_STACK_NOT_INITIALIZED Stack is not intialized.
276 * Initialize the stack by calling st_things_initialize().
277 * @retval #ST_THINGS_ERROR_STACK_NOT_STARTED Stack is not started.
278 * Start the stack by calling st_things_start().
280 int st_things_notify_observers(const char *resource_uri);
283 * @brief Create an instance of representation.
284 * @remarks To destroy an instance, st_things_destroy_representation_inst() should be used.
285 * @return a pointer of the created representation, otherwise a null pointer if the memory is insufficient.
287 st_things_representation_s *st_things_create_representation_inst(void);
290 * @brief Destroy an instance of representation.
291 * @param[in] rep Representation that will be destroyed.
293 void st_things_destroy_representation_inst(st_things_representation_s *rep);
297 #endif /* __cplusplus */
299 #endif /* __ST_THINGS_H__ */