| /* |
| * Copyright (c) 2018, The OpenThread Authors. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * 3. Neither the name of the copyright holder nor the |
| * names of its contributors may be used to endorse or promote products |
| * derived from this software without specific prior written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| * POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| /** |
| * @file |
| * @brief |
| * This file includes functions for the Thread Border Agent role. |
| */ |
| |
| #ifndef OPENTHREAD_BORDER_AGENT_H_ |
| #define OPENTHREAD_BORDER_AGENT_H_ |
| |
| #include <openthread/instance.h> |
| |
| #ifdef __cplusplus |
| extern "C" { |
| #endif |
| |
| /** |
| * @addtogroup api-border-agent |
| * |
| * @brief |
| * This module includes functions for the Thread Border Agent role. |
| * |
| * @{ |
| * |
| */ |
| |
| /** |
| * The length of Border Agent/Router ID in bytes. |
| * |
| */ |
| #define OT_BORDER_AGENT_ID_LENGTH (16) |
| |
| /** |
| * Minimum length of the ephemeral key string. |
| * |
| */ |
| #define OT_BORDER_AGENT_MIN_EPHEMERAL_KEY_LENGTH (6) |
| |
| /** |
| * Maximum length of the ephemeral key string. |
| * |
| */ |
| #define OT_BORDER_AGENT_MAX_EPHEMERAL_KEY_LENGTH (32) |
| |
| /** |
| * Default ephemeral key timeout interval in milliseconds. |
| * |
| */ |
| #define OT_BORDER_AGENT_DEFAULT_EPHEMERAL_KEY_TIMEOUT (2 * 60 * 1000u) |
| |
| /** |
| * Maximum ephemeral key timeout interval in milliseconds. |
| * |
| */ |
| #define OT_BORDER_AGENT_MAX_EPHEMERAL_KEY_TIMEOUT (10 * 60 * 1000u) |
| |
| /** |
| * @struct otBorderAgentId |
| * |
| * Represents a Border Agent ID. |
| * |
| */ |
| OT_TOOL_PACKED_BEGIN |
| struct otBorderAgentId |
| { |
| uint8_t mId[OT_BORDER_AGENT_ID_LENGTH]; |
| } OT_TOOL_PACKED_END; |
| |
| /** |
| * Represents a Border Agent ID. |
| * |
| */ |
| typedef struct otBorderAgentId otBorderAgentId; |
| |
| /** |
| * Defines the Border Agent state. |
| * |
| */ |
| typedef enum otBorderAgentState |
| { |
| OT_BORDER_AGENT_STATE_STOPPED = 0, ///< Border agent role is disabled. |
| OT_BORDER_AGENT_STATE_STARTED = 1, ///< Border agent is started. |
| OT_BORDER_AGENT_STATE_ACTIVE = 2, ///< Border agent is connected with external commissioner. |
| } otBorderAgentState; |
| |
| /** |
| * Gets the #otBorderAgentState of the Thread Border Agent role. |
| * |
| * @param[in] aInstance A pointer to an OpenThread instance. |
| * |
| * @returns The current #otBorderAgentState of the Border Agent. |
| * |
| */ |
| otBorderAgentState otBorderAgentGetState(otInstance *aInstance); |
| |
| /** |
| * Gets the UDP port of the Thread Border Agent service. |
| * |
| * @param[in] aInstance A pointer to an OpenThread instance. |
| * |
| * @returns UDP port of the Border Agent. |
| * |
| */ |
| uint16_t otBorderAgentGetUdpPort(otInstance *aInstance); |
| |
| /** |
| * Gets the randomly generated Border Agent ID. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_ID_ENABLE`. |
| * |
| * The ID is saved in persistent storage and survives reboots. The typical use case of the ID is to |
| * be published in the MeshCoP mDNS service as the `id` TXT value for the client to identify this |
| * Border Router/Agent device. |
| * |
| * @param[in] aInstance A pointer to an OpenThread instance. |
| * @param[out] aId A pointer to buffer to receive the ID. |
| * |
| * @retval OT_ERROR_NONE If successfully retrieved the Border Agent ID. |
| * @retval ... If failed to retrieve the Border Agent ID. |
| * |
| * @sa otBorderAgentSetId |
| * |
| */ |
| otError otBorderAgentGetId(otInstance *aInstance, otBorderAgentId *aId); |
| |
| /** |
| * Sets the Border Agent ID. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_ID_ENABLE`. |
| * |
| * The Border Agent ID will be saved in persistent storage and survive reboots. It's required to |
| * set the ID only once after factory reset. If the ID has never been set by calling this function, |
| * a random ID will be generated and returned when `otBorderAgentGetId` is called. |
| * |
| * @param[in] aInstance A pointer to an OpenThread instance. |
| * @param[out] aId A pointer to the Border Agent ID. |
| * |
| * @retval OT_ERROR_NONE If successfully set the Border Agent ID. |
| * @retval ... If failed to set the Border Agent ID. |
| * |
| * @sa otBorderAgentGetId |
| * |
| */ |
| otError otBorderAgentSetId(otInstance *aInstance, const otBorderAgentId *aId); |
| |
| /** |
| * Sets the ephemeral key for a given timeout duration. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_EPHEMERAL_KEY_ENABLE`. |
| * |
| * The ephemeral key can be set when the Border Agent is already running and is not currently connected to any external |
| * commissioner (i.e., it is in `OT_BORDER_AGENT_STATE_STARTED` state). Otherwise `OT_ERROR_INVALID_STATE` is returned. |
| * |
| * The given @p aKeyString is directly used as the ephemeral PSK (excluding the trailing null `\0` character ). |
| * The @p aKeyString length must be between `OT_BORDER_AGENT_MIN_EPHEMERAL_KEY_LENGTH` and |
| * `OT_BORDER_AGENT_MAX_EPHEMERAL_KEY_LENGTH`, inclusive. |
| * |
| * Setting the ephemeral key again before a previously set key has timed out will replace the previously set key and |
| * reset the timeout. |
| * |
| * While the timeout interval is in effect, the ephemeral key can be used only once by an external commissioner to |
| * connect. Once the commissioner disconnects, the ephemeral key is cleared, and the Border Agent reverts to using |
| * PSKc. |
| * |
| * @param[in] aInstance The OpenThread instance. |
| * @param[in] aKeyString The ephemeral key string (used as PSK excluding the trailing null `\0` character). |
| * @param[in] aTimeout The timeout duration in milliseconds to use the ephemeral key. |
| * If zero, the default `OT_BORDER_AGENT_DEFAULT_EPHEMERAL_KEY_TIMEOUT` value will be used. |
| * If the given timeout value is larger than `OT_BORDER_AGENT_MAX_EPHEMERAL_KEY_TIMEOUT`, the |
| * max value `OT_BORDER_AGENT_MAX_EPHEMERAL_KEY_TIMEOUT` will be used instead. |
| * @param[in] aUdpPort The UDP port to use with ephemeral key. If zero, an ephemeral port will be used. |
| * `otBorderAgentGetUdpPort()` will return the current UDP port being used. |
| * |
| * @retval OT_ERROR_NONE Successfully set the ephemeral key. |
| * @retval OT_ERROR_INVALID_STATE Border Agent is not running or it is connected to an external commissioner. |
| * @retval OT_ERROR_INVALID_ARGS The given @p aKeyString is not valid (too short or too long). |
| * @retval OT_ERROR_FAILED Failed to set the key (e.g., could not bind to UDP port). |
| |
| * |
| */ |
| otError otBorderAgentSetEphemeralKey(otInstance *aInstance, |
| const char *aKeyString, |
| uint32_t aTimeout, |
| uint16_t aUdpPort); |
| |
| /** |
| * Cancels the ephemeral key that is in use. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_EPHEMERAL_KEY_ENABLE`. |
| * |
| * Can be used to cancel a previously set ephemeral key before it times out. If the Border Agent is not running or |
| * there is no ephemeral key in use, calling this function has no effect. |
| * |
| * If a commissioner is connected using the ephemeral key and is currently active, calling this function does not |
| * change its state. In this case the `otBorderAgentIsEphemeralKeyActive()` will continue to return `TRUE` until the |
| * commissioner disconnects. |
| * |
| * @param[in] aInstance The OpenThread instance. |
| * |
| */ |
| void otBorderAgentClearEphemeralKey(otInstance *aInstance); |
| |
| /** |
| * Indicates whether or not an ephemeral key is currently active. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_EPHEMERAL_KEY_ENABLE`. |
| * |
| * @param[in] aInstance The OpenThread instance. |
| * |
| * @retval TRUE An ephemeral key is active. |
| * @retval FALSE No ephemeral key is active. |
| * |
| */ |
| bool otBorderAgentIsEphemeralKeyActive(otInstance *aInstance); |
| |
| /** |
| * Callback function pointer to signal changes related to the Border Agent's ephemeral key. |
| * |
| * This callback is invoked whenever: |
| * |
| * - The Border Agent starts using an ephemeral key. |
| * - Any parameter related to the ephemeral key, such as the port number, changes. |
| * - The Border Agent stops using the ephemeral key due to: |
| * - A direct call to `otBorderAgentClearEphemeralKey()`. |
| * - The ephemeral key timing out. |
| * - An external commissioner successfully using the key to connect and then disconnecting. |
| * - Reaching the maximum number of allowed failed connection attempts. |
| * |
| * Any OpenThread API, including `otBorderAgent` APIs, can be safely called from this callback. |
| * |
| * @param[in] aContext A pointer to an arbitrary context (provided when callback is set). |
| * |
| */ |
| typedef void (*otBorderAgentEphemeralKeyCallback)(void *aContext); |
| |
| /** |
| * Sets the callback function used by the Border Agent to notify any changes related to use of ephemeral key. |
| * |
| * Requires `OPENTHREAD_CONFIG_BORDER_AGENT_EPHEMERAL_KEY_ENABLE`. |
| * |
| * A subsequent call to this function will replace any previously set callback. |
| * |
| * @param[in] aInstance The OpenThread instance. |
| * @param[in] aCallback The callback function pointer. |
| * @param[in] aContext The arbitrary context to use with callback. |
| * |
| */ |
| void otBorderAgentSetEphemeralKeyCallback(otInstance *aInstance, |
| otBorderAgentEphemeralKeyCallback aCallback, |
| void *aContext); |
| |
| /** |
| * @} |
| * |
| */ |
| |
| #ifdef __cplusplus |
| } // end of extern "C" |
| #endif |
| |
| #endif // OPENTHREAD_BORDER_AGENT_H_ |