This decribes proposed D-Bus based API for Bluetooth Mesh implementation. --- doc/mesh-api.txt | 409 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 409 insertions(+) create mode 100644 doc/mesh-api.txt diff --git a/doc/mesh-api.txt b/doc/mesh-api.txt new file mode 100644 index 000000000..1c9a5fa3e --- /dev/null +++ b/doc/mesh-api.txt @@ -0,0 +1,409 @@ +BlueZ D-Bus Mesh API description +******************************** + +Mesh Network Hierarchy +====================== +Service org.bluez.mesh1 +Interface org.bluez.mesh1.Network +Object path /org/bluez/mesh1 + +Methods: + uint64 Join(object provision_agent, + array{string} capabilities, + array{byte}[16] uuid, + array{string} oob_info, + uint32 uri_hash, + array{byte} composition) + + This is the first method that an application has to call to become + a node on a mesh network. + + The provision_agent parameter is the object that implements + org.bluez.mesh.ProvisionAgent interface. + + The capabilities parameter is an array of strings with the following + allowed values: + "blink", "beep", "vibrate", "out-numeric", "out-alpha", "push", + "twist", "in-numeric", "in-alpha", "public-oob", "static-oob". + + The uuid parameter is a 16-byte array that contains Device UUID. + + The oob_info parameter is an array of strings with the following + allowed values: + "other", "uri", "machine-code-2d", "bar-code", "nfc", "number", + "string", "on-box", "in-box", "on-paper", "in-manual", "on-device" + The array can be empty if oob data is not available. + + The uri_hash parameter is a 4-octet value that contains URI Hash + data that is gnnerated as described in Mesh Profile. If no URI is, + available, the passed in value shall be zero. + + The composition parameter is a byte array whose layout + follows that of the composition data as defined by Mesh Profile + specification. The daemon implements Configuration Server model. + The composition data array may not include the Configuration Server + model id in which case the model id will be implicitly aded by the + daemon. + + In case of success, the method returns a 64-bit token. The token + must be preserved by the application in order to authenticate itself + to the mesh daemon and attach to the network as a mesh node or + permanently remove the identity of the mesh node. + + After the successful completion of this method, the application + should call Attach() method to obtain access to mesh network. + The meshd daemon retains persistent information about the node + identified by the token. + + PossibleErrors: + org.bluez.mesh1.Error.Failed, + org.bluez.mesh1.Error.Canceled, + org.bluez.mesh1.Error.InvalidArguments + org.bluez.mesh1.Error.Timeout + + void Cancel(void) + Cancels an outstanding Join method. Join will return with + org.bluez.mesh1.Error.Canceled + + (object node, array{byte, array{(uint16, dict}} configuration) Attach( + object app_defined_root, uint64 token) + + After successful Provisioning/Joining (i.e., after the initial + successful Join call), this is the first method that an application + must call to obtain access to mesh node functionalities. + The daemon verifies whether the application is authorized to + use this mesh node based on the value of the 64-bit token, which has + been assigned to the application when it first joined mesh network. + + The app_defined_root parameter is a D-Bus object root path of the + node where child mesh elements have their own objects that implement + the org.bluez.mesh.Access interface. The standard DBus.ObjectManager + interface must be available on the app_defined_root path. The + app_defined_root tree must conform to the naming convention + described in the Mesh Application Hierarchy. + + The token parameter is a 64-bit number that has been obtained + as a result of successful Join() method call. + + In case of success, the method call returns mesh node object (see + Mesh Node Hierarchy section) and current configuration settings. + The configuration parameter is an array, where each entry is a + configuration per node element: + index (byte) - element index + array of model configurations: + model_id (uint16) - SIG Model Identifier + model_config - dictionary with the following keys defined: + + array{uint16} Bindings : Indices of application keys + bound to the model + uint32 PublicationPeriod : Model publication period in + milliseconds + uint16 Vendor: a 16-bit Bluetooth-assigned Company + Identifier of the vendor as defined by + Bluetooth SIG + + PossibleErrors: + org.bluez.mesh1.Error.InvalidArguments + org.bluez.mesh1.Error.NotFound, + org.bluez.mesh1.Error.Failed + + void Leave(uint64 token) + + This removes the configuration information about the mesh node + identified by the 64-bit token parameter. The token parameter + has been obtained as a result of successful Join() method call. + + PossibleErrors: + org.bluez.mesh1.Error.NotFound + +Mesh Node Hierarchy +=================== +Service org.bluez.mesh1 +Interface org.bluez.mesh1.Node +Object path /org/bluez/mesh1/node<xxxx> + where xxxx is a 4-digit hexadecimal number generated by meshd daemon + +Methods: + + void Send(object element_path, uint16_t destination, uint16 key_index, + array{byte} data) + + This method is used to send a message originated by a local model. + + The element_path parameter is the object path of an element from + a collection of the application elements (see Mesh Application + Hierarchy section). + + The destination parameter contains the destination address. This + destination must be a uint16 to a unicast address, or a well known + group address. + + The key_index parameter determines which application key to use for + encrypting the message. The key_index must be valid for that + element, i.e., the application key must be bound to a model on this + element. Otherwise, org.bluez.mesh1.Error.NotAuthorized will be + returned. + + The data parameter is an outgoing message to be encypted by the + meshd daemon and sent on. + + Possible errors: + org.bluez.mesh1.Error.NotAuthorized + org.bluez.mesh1.Error.InvalidArguments + org.bluez.mesh1.Error.NotFound + + void Publish(object element_path, uint16 model, array{byte} data) + + This method is used to send a publication originated by a local + model. If the model does not exist, or it has no publication record, + the method returns org.bluez.mesh1.Error.DoesNotExist error. + + The element_path parameter is the object path of an element from + a collection of the application elements (see Mesh Application + Hierarchy section). + + The model parameter contains a model ID, as defined by the + Bluetooth SIG. + + Since only one Publish record may exist per element-model, the + destination and key_index are obtained from the Publication + record cached by the daemon. + + Possible errors: + org.bluez.mesh1.Error.DoesNotExist + org.bluez.mesh1.Error.InvalidArguments + org.bluez.mesh1.Error.NotFound + + void VendorPublish(object element_path, uint16 vendor, uint16 model_id, + array{byte} data) + + This method is used to send a publication originated by a local + vendor model. If the model does not exist, or it has no publication + record, the method returns org.bluez.mesh1.Error.DoesNotExist error. + + The element_path parameter is the object path of an element from + a collection of the application elements (see Mesh Application + Hierarchy section). + + The vendor parameter is a 16-bit Bluetooth-assigned Company + Identifier. + + The model_id parameter is a 16-bit vendor-assigned Model Identifier. + + Since only one Publish record may exist per element-model, the + destination and key_index are obtained from the Publication + record cached by the daemon. + + Possible errors: + org.bluez.mesh1.Error.DoesNotExist + org.bluez.mesh1.Error.InvalidArguments + org.bluez.mesh1.Error.NotFound + +Properties: + dict Features [read-only] + + The following keys are defined: + uint16 Friend + uint16 LowPower + uint16 Proxy + uint16 Beaconing + with following enumerated values: + 0 - feature is disabled + 1 - feature is enabled + 2 - feature is unsupported + + uint32 SecondsSinceLastHeard [read-only] + This property may be read at any time to determine the number of + seconds since mesh network layer traffic was last detected on this + node's network. + + uint16 unicast [read-only] : Primary unicast address assigned to + this node + +Mesh Application Hierarchy +========================== +Service unique name + +An applcation is a collection of elements that host SIG defined and vendor +specific models. It is expected that an application implements +org.freedesktop.DBus.ObjectManager interface. + +An example mesh application hierarchy may look like this: + + -> /com/example + | - org.freedesktop.DBus.ObjectManager + | - org.bluez.mesh1.Attention (optional) + | + -> /com/example/ele00 + | | - org.bluez.mesh1.Element + -> /com/example/ele01 + | | - org.bluez.mesh1.Element + ... + -> /com/example/elexx + | | - org.bluez.mesh1.Element + +Mesh Element Hierarchy +====================== +Service unique name +Interface org.bluez.mesh1.Element +Object path /<app_defined_root>/ele<yy> + where yy is a 2-digit zero relative hexadecimal index of the element + +Methods: + + void MessageReceived(uint16 source, uint16 key_index, bool subscription, + array{byte} data) + + This method is called by meshd daemon when a message arrives + addressed to the application. + + The source parameter is unicast address of the remote node-element + that sent the message. + + The key_index parameter indicates which application key has been + used to decode the incoming message. The same key_index should be + used by the application when sending a response to this message + (in case a response is expected). + + The subscription parameter is a boolean that is set to true if + the message is received as a part of the subscription (i.e., the + destination is either a well known group address or a virtual + label. + + The data parameter is the incoming message. + + void UpdateModelConfiguration(uint16 model_id, dict config) + + This method is called by meshd daemon when a model's configuration + is updated. + + The model_id parameter contains BT SIG Model Identifier. + + The config parameter is a dictionary with the following keys + defined: + + array{uint16} Bindings : Indices of application keys + bound to the model + uint32 PublicationPeriod : Model publication period in + milliseconds + uint16 Vendor: a 16-bit Bluetooth-assigned Company + Identifier of the vendor as defined by + Bluetooth SIG + +Mesh Attention Hierarchy +======================== +Service unique name +Interface org.bluez.mesh1.Attention +Object path freely definable + +This is an optional interface that implements health attention timer. + +Methods: + void SetTimer(uint8 element_index, uint16 time) + + The element_index parameter is the element's index within the node + where the health server model is hosted. + + The time parameter indicates how many seconds the attention state + shall be on. + + PossibleErrors: + org.bluez.mesh1.Error.NotSupported + + uint16 GetTimer(uint16 element) + + The element parameter is the unicast address within the node + where the health server model is hosted. + + Returns the number of seconds for how long the attention action + remains staying on. + + PossibleErrors: + org.bluez.mesh1.Error.NotSupported + + +Provisioning Agent Hierarchy +============================ +Service unique name +Interface org.bluez.mesh1.ProvisionAgent +Object path freely definable + +Methods: + array{byte} PrivateKey() + + This method is called during provisioning if the Provisioner + has requested Out-Of-Band ECC key exchange. The Private key + is returned to the Daemon, and the Public Key is delivered to + the remote Provisioner using a method that does not involve + the Bluetooth Mesh system. The Private Key returned must be + 32 octets in size, or the Provisioning procedure will fail + and be canceled. + + This function will only be called if the Provisioner has + requested pre-determined keys to be exchanged Out-of-Band, + and the local role is Unprovisioned device. + + array{byte} PublicKey() + + This method is called during provisioning if the local device + is the Provisioner, and is requestng Out-Of-Band ECC key + exchange. The Public key is returned to the Daemon + that is the matched pair of the Private key of the remote + device. The Public Key returned must be 64 octets in + size, or the Provisioning procedure will fail and be canceled. + + This function will only be called if the Provisioner has + requested pre-determined keys to be exchanged Out-of-Band, + and the local role is Provisioner. + + void DisplayString(string display) + This method is called when the Daemon has something important + for the Agent to Display, but does not require any additional + input locally. For instance: "Enter "ABCDE" on remote device". + + void DisplayNumeric(uint8 type, uint32 number) + + This method is called when the Daemon has something important + for the Agent to Display, but does not require any additional + input locally. For instance: "Enter 149264 on remote device". + + The type parameter indicates the display method. An enumeration + of "Blink", "Beep", "Vibrate", or "OutNumeric". + + The number parameter is the specific value represented by + the Prompt. + + uint32 PromptNumeric(uint8 type) + + This method is called when the Daemon has requires the user to + enter a 1-9 digit decimal value. + + The type parameter indicates the input method. An enumeration + of "Push", "Twist", or "InNumeric". + + This agent should prompt the user for specific input. For instance: + "Enter value being displayed by remote device". + + array{byte} PromptStatic(uint8 type) + + This method is called when the Daemon requires a 16 octet + byte array, as an Out-of-Band authentication. + + The type parameter indicates the input method. An enumeration + of "Static", or "InAlpha". + + The Static data returned must be 16 octets in size, or the + Provisioning procedure will fail and be canceled. If input is + an InAlpha String, the printable charactors should be left + justified, with trailing 0x00 octets filling the remaining bytes. + + void Cancel() + + This method gets called by the daemon to cancel any existing + Agent Requests. When called, any pending user input should be + canceled. + + +Mesh Provisioner Hierarchy +========================== +<TBD> -- 2.17.2