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chore: delete all LICENSE files under gateway dirs

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JianBo He 2023-04-05 15:25:08 +08:00
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END OF TERMS AND CONDITIONS
Copyright 2023, JianBo He <heeejianbo@gmail.com>.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
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191
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of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright 2023, JianBo He <heeejianbo@gmail.com>.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
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TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
1. Definitions.
"License" shall mean the terms and conditions for use, reproduction,
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"Legal Entity" shall mean the union of the acting entity and all
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outstanding shares, or (iii) beneficial ownership of such entity.
"You" (or "Your") shall mean an individual or Legal Entity
exercising permissions granted by this License.
"Source" form shall mean the preferred form for making modifications,
including but not limited to software source code, documentation
source, and configuration files.
"Object" form shall mean any form resulting from mechanical
transformation or translation of a Source form, including but
not limited to compiled object code, generated documentation,
and conversions to other media types.
"Work" shall mean the work of authorship, whether in Source or
Object form, made available under the License, as indicated by a
copyright notice that is included in or attached to the work
(an example is provided in the Appendix below).
"Derivative Works" shall mean any work, whether in Source or Object
form, that is based on (or derived from) the Work and for which the
editorial revisions, annotations, elaborations, or other modifications
represent, as a whole, an original work of authorship. For the purposes
of this License, Derivative Works shall not include works that remain
separable from, or merely link (or bind by name) to the interfaces of,
the Work and Derivative Works thereof.
"Contribution" shall mean any work of authorship, including
the original version of the Work and any modifications or additions
to that Work or Derivative Works thereof, that is intentionally
submitted to Licensor for inclusion in the Work by the copyright owner
or by an individual or Legal Entity authorized to submit on behalf of
the copyright owner. For the purposes of this definition, "submitted"
means any form of electronic, verbal, or written communication sent
to the Licensor or its representatives, including but not limited to
communication on electronic mailing lists, source code control systems,
and issue tracking systems that are managed by, or on behalf of, the
Licensor for the purpose of discussing and improving the Work, but
excluding communication that is conspicuously marked or otherwise
designated in writing by the copyright owner as "Not a Contribution."
"Contributor" shall mean Licensor and any individual or Legal Entity
on behalf of whom a Contribution has been received by Licensor and
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copyright license to reproduce, prepare Derivative Works of,
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Work and such Derivative Works in Source or Object form.
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worldwide, non-exclusive, no-charge, royalty-free, irrevocable
(except as stated in this section) patent license to make, have made,
use, offer to sell, sell, import, and otherwise transfer the Work,
where such license applies only to those patent claims licensable
by such Contributor that are necessarily infringed by their
Contribution(s) alone or by combination of their Contribution(s)
with the Work to which such Contribution(s) was submitted. If You
institute patent litigation against any entity (including a
cross-claim or counterclaim in a lawsuit) alleging that the Work
or a Contribution incorporated within the Work constitutes direct
or contributory patent infringement, then any patent licenses
granted to You under this License for that Work shall terminate
as of the date such litigation is filed.
4. Redistribution. You may reproduce and distribute copies of the
Work or Derivative Works thereof in any medium, with or without
modifications, and in Source or Object form, provided that You
meet the following conditions:
(a) You must give any other recipients of the Work or
Derivative Works a copy of this License; and
(b) You must cause any modified files to carry prominent notices
stating that You changed the files; and
(c) You must retain, in the Source form of any Derivative Works
that You distribute, all copyright, patent, trademark, and
attribution notices from the Source form of the Work,
excluding those notices that do not pertain to any part of
the Derivative Works; and
(d) If the Work includes a "NOTICE" text file as part of its
distribution, then any Derivative Works that You distribute must
include a readable copy of the attribution notices contained
within such NOTICE file, excluding those notices that do not
pertain to any part of the Derivative Works, in at least one
of the following places: within a NOTICE text file distributed
as part of the Derivative Works; within the Source form or
documentation, if provided along with the Derivative Works; or,
within a display generated by the Derivative Works, if and
wherever such third-party notices normally appear. The contents
of the NOTICE file are for informational purposes only and
do not modify the License. You may add Your own attribution
notices within Derivative Works that You distribute, alongside
or as an addendum to the NOTICE text from the Work, provided
that such additional attribution notices cannot be construed
as modifying the License.
You may add Your own copyright statement to Your modifications and
may provide additional or different license terms and conditions
for use, reproduction, or distribution of Your modifications, or
for any such Derivative Works as a whole, provided Your use,
reproduction, and distribution of the Work otherwise complies with
the conditions stated in this License.
5. Submission of Contributions. Unless You explicitly state otherwise,
any Contribution intentionally submitted for inclusion in the Work
by You to the Licensor shall be under the terms and conditions of
this License, without any additional terms or conditions.
Notwithstanding the above, nothing herein shall supersede or modify
the terms of any separate license agreement you may have executed
with Licensor regarding such Contributions.
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor,
except as required for reasonable and customary use in describing the
origin of the Work and reproducing the content of the NOTICE file.
7. Disclaimer of Warranty. Unless required by applicable law or
agreed to in writing, Licensor provides the Work (and each
Contributor provides its Contributions) on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
implied, including, without limitation, any warranties or conditions
of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
PARTICULAR PURPOSE. You are solely responsible for determining the
appropriateness of using or redistributing the Work and assume any
risks associated with Your exercise of permissions under this License.
8. Limitation of Liability. In no event and under no legal theory,
whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
liable to You for damages, including any direct, indirect, special,
incidental, or consequential damages of any character arising as a
result of this License or out of the use or inability to use the
Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
Copyright 2023, JianBo He <heeejianbo@gmail.com>.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

407
apps/emqx_lwm2m/README.md
View File

@ -1,356 +1,61 @@
# LwM2M Gateway # emqx_lwm2m
[The LwM2M Specifications](http://www.openmobilealliance.org/release/LightweightM2M) is a Lightweight Machine to Machine protocol. [LwM2M (Lightweight Machine-to-Machine)](https://lwm2m.openmobilealliance.org/)
is a protocol designed for IoT devices and machine-to-machine communication.
It is a lightweight protocol that supports devices with limited processing power and memory.
With `emqx_lwm2m`, user is able to send LwM2M commands(READ/WRITE/EXECUTE/...) and get LwM2M response in MQTT way. `emqx_lwm2m` transforms data between MQTT and LwM2M protocol.
The **LwM2M Gateway** in EMQX can accept LwM2M clients and translate theirevents
and messages into MQTT Publish messages.
In the current implementation, it has the following limitations:
- Based UDP/DTLS transport.
- Only supports v1.0.2. The v1.1.x and v1.2.x is not supported yet.
- Not included LwM2M Bootstrap services.
## Quick Start
In EMQX 5.0, LwM2M gateways can be configured and enabled through the Dashboard.
It can also be enabled via the HTTP API, and emqx.conf e.g, In emqx.conf:
```properties
gateway.lwm2m {
xml_dir = "etc/lwm2m_xml/"
auto_observe = true
enable_stats = true
idle_timeout = "30s"
lifetime_max = "86400s"
lifetime_min = "1s"
mountpoint = "lwm2m/${endpoint_namea}/"
qmode_time_window = "22s"
update_msg_publish_condition = "contains_object_list"
translators {
command {qos = 0, topic = "dn/#"}
notify {qos = 0, topic = "up/notify"}
register {qos = 0, topic = "up/resp"}
response {qos = 0, topic = "up/resp"}
update {qos = 0, topic = "up/update"}
}
listeners {
udp {
default {
bind = "5783"
max_conn_rate = 1000
max_connections = 1024000
}
}
}
}
```
> Note:
> Configuring the gateway via emqx.conf requires changes on a per-node basis,
> but configuring it via Dashboard or the HTTP API will take effect across the cluster.
:::
## Object definations
emqx_lwm2m needs object definitions to parse data from lwm2m devices. Object definitions are declared by organizations in XML format, you could find those XMLs from [LwM2MRegistry](http://www.openmobilealliance.org/wp/OMNA/LwM2M/LwM2MRegistry.html), download and put them into the directory specified by `lwm2m.xml_dir`. If no associated object definition is found, response from device will be discarded and report an error message in log. emqx_lwm2m needs object definitions to parse data from lwm2m devices. Object definitions are declared by organizations in XML format, you could find those XMLs from [LwM2MRegistry](http://www.openmobilealliance.org/wp/OMNA/LwM2M/LwM2MRegistry.html), download and put them into the directory specified by `lwm2m.xml_dir`. If no associated object definition is found, response from device will be discarded and report an error message in log.
## Load emqx_lwm2m More documentations: [LwM2M Gateway](https://www.emqx.io/docs/en/v5.0/gateway/lwm2m.html)
```
./bin/emqx_ctl plugins load emqx_lwm2m
```
## Test emqx-lwm2m using *wakaama*
[wakaama](https://github.com/eclipse/wakaama) is an easy-to-use lwm2m client command line tool.
Start *lwm2mclient* using an endpoint name `ep1`:
```
./lwm2mclient -n ep1 -h 127.0.0.1 -p 5683 -4
```
To send an LwM2M DISCOVER command to *lwm2mclient*, publish an MQTT message to topic `lwm2m/<epn>/dn` (where `<epn>` is the endpoint name of the client), with following payload:
```json
{
"reqID": "2",
"msgType": "discover",
"data": {
"path": "/3/0"
}
}
```
The MQTT message will be translated to an LwM2M DISCOVER command and sent to the *lwm2mclient*. Then the response of *lwm2mclient* will be in turn translated to an MQTT message, with topic `lwm2m/<epn>/up/resp`, with following payload:
```json
{
"reqID": "2",
"msgType": "discover",
"data": {
"code":"2.05",
"codeMsg": "content",
"content": [
"</3/0>;dim=8",
"</3/0/0>",
"</3/0/1>",
"</3/0/4>",
"</3/0/16>"
]
}
}
```
## LwM2M <--> MQTT Mapping
### Register/Update (LwM2M Client Registration Interface)
- **LwM2M Register and Update message will be converted to following MQTT message:**
- **Method:** PUBLISH
- **Topic:** `lwm2m/{?EndpointName}/up/resp` (configurable)
- **Payload**:
- MsgType **register** and **update**:
```json
{
"msgType": {?MsgType},
"data": {
"ep": {?EndpointName},
"lt": {?LifeTime},
"sms": {?MSISDN},
"lwm2m": {?Lwm2mVersion},
"b": {?Binding},
"alternatePath": {?AlternatePath},
"objectList": {?ObjectList}
}
}
```
- {?EndpointName}: String, the endpoint name of the LwM2M client
- {?MsgType}: String, could be:
- "register": LwM2M Register
- "update": LwM2M Update
- "data" contains the query options and the object-list of the register message
- The *update* message is only published if the object-list changed.
### Downlink Command and Uplink Response (LwM2M Device Management & Service Enablement Interface)
- **To send a downlink command to device, publish following MQTT message:**
- **Method:** PUBLISH
- **Topic:** `lwm2m/{?EndpointName}/dn`
- **Request Payload**:
```json
{
"reqID": {?ReqID},
"msgType": {?MsgType},
"data": {?Data}
}
```
- {?ReqID}: Integer, request-id, used for matching the response to the request
- {?MsgType}: String, can be one of the following:
- "read": LwM2M Read
- "discover": LwM2M Discover
- "write": LwM2M Write
- "write-attr": LwM2M Write Attributes
- "execute": LwM2M Execute
- "create": LwM2M Create
- "delete": LwM2M Delete
- {?Data}: JSON Object, its value depends on the {?MsgType}:
- **If {?MsgType} = "read" or "discover"**:
```json
{
"path": {?ResourcePath}
}
```
- {?ResourcePath}: String, LwM2M full resource path. e.g. "3/0", "/3/0/0", "/3/0/6/0"
- **If {?MsgType} = "write" (single write)**:
```json
{
"path": {?ResourcePath},
"type": {?ValueType},
"value": {?Value}
}
```
- {?ValueType}: String, can be: "Time", "String", "Integer", "Float", "Boolean", "Opaque", "Objlnk"
- {?Value}: Value of the resource, depends on "type".
- **If {?MsgType} = "write" (batch write)**:
```json
{
"basePath": {?BasePath},
"content": [
{
"path": {?ResourcePath},
"type": {?ValueType},
"value": {?Value}
}
]
}
```
- The full path is concatenation of "basePath" and "path".
- **If {?MsgType} = "write-attr"**:
```json
{
"path": {?ResourcePath},
"pmin": {?PeriodMin},
"pmax": {?PeriodMax},
"gt": {?GreaterThan},
"lt": {?LessThan},
"st": {?Step}
}
```
- {?PeriodMin}: Number, LwM2M Notification Class Attribute - Minimum Period.
- {?PeriodMax}: Number, LwM2M Notification Class Attribute - Maximum Period.
- {?GreaterThan}: Number, LwM2M Notification Class Attribute - Greater Than.
- {?LessThan}: Number, LwM2M Notification Class Attribute - Less Than.
- {?Step}: Number, LwM2M Notification Class Attribute - Step.
- **If {?MsgType} = "execute"**:
```json
{
"path": {?ResourcePath},
"args": {?Arguments}
}
```
- {?Arguments}: String, LwM2M Execute Arguments.
- **If {?MsgType} = "create"**:
```json
{
"basePath": "/{?ObjectID}",
"content": [
{
"path": {?ResourcePath},
"type": {?ValueType},
"value": {?Value}
}
]
}
```
- {?ObjectID}: Integer, LwM2M Object ID
- **If {?MsgType} = "delete"**:
```json
{
"path": "{?ObjectID}/{?ObjectInstanceID}"
}
```
- {?ObjectInstanceID}: Integer, LwM2M Object Instance ID
- **The response of LwM2M will be converted to following MQTT message:**
- **Method:** PUBLISH
- **Topic:** `"lwm2m/{?EndpointName}/up/resp"`
- **Response Payload:**
```json
{
"reqID": {?ReqID},
"imei": {?IMEI},
"imsi": {?IMSI},
"msgType": {?MsgType},
"data": {?Data}
}
```
- {?MsgType}: String, can be:
- "read": LwM2M Read
- "discover": LwM2M Discover
- "write": LwM2M Write
- "write-attr": LwM2M Write Attributes
- "execute": LwM2M Execute
- "create": LwM2M Create
- "delete": LwM2M Delete
- **"ack"**: [CoAP Empty ACK](https://tools.ietf.org/html/rfc7252#section-5.2.2)
- {?Data}: JSON Object, its value depends on {?MsgType}:
- **If {?MsgType} = "write", "write-attr", "execute", "create", "delete", or "read"(when response without content)**:
```json
{
"code": {?StatusCode},
"codeMsg": {?CodeMsg},
"reqPath": {?RequestPath}
}
```
- {?StatusCode}: String, LwM2M status code, e.g. "2.01", "4.00", etc.
- {?CodeMsg}: String, LwM2M response message, e.g. "content", "bad_request"
- {?RequestPath}: String, the requested "path" or "basePath"
- **If {?MsgType} = "discover"**:
```json
{
"code": {?StatusCode},
"codeMsg": {?CodeMsg},
"reqPath": {?RequestPath},
"content": [
{?Link},
...
]
}
```
- {?Link}: String(LwM2M link format) e.g. `"</3>"`, `"<3/0/1>;dim=8"`
- **If {?MsgType} = "read"(when response with content)**:
```json
{
"code": {?StatusCode},
"codeMsg": {?CodeMsg},
"content": {?Content}
}
```
- {?Content}
```json
[
{
"path": {?ResourcePath},
"value": {?Value}
}
]
```
- **If {?MsgType} = "ack", "data" does not exists**
### Observe (Information Reporting Interface - Observe/Cancel-Observe)
- **To observe/cancel-observe LwM2M client, send following MQTT PUBLISH:**
- **Method:** PUBLISH
- **Topic:** `lwm2m/{?EndpointName}/dn`
- **Request Payload**:
```json
{
"reqID": {?ReqID},
"msgType": {?MsgType},
"data": {
"path": {?ResourcePath}
}
}
```
- {?ResourcePath}: String, the LwM2M resource to be observed/cancel-observed.
- {?MsgType}: String, can be:
- "observe": LwM2M Observe
- "cancel-observe": LwM2M Cancel Observe
- {?ReqID}: Integer, request-id, is the {?ReqID} in the request
- **Responses will be converted to following MQTT message:**
- **Method:** PUBLISH
- **Topic:** `lwm2m/{?EndpointName}/up/resp`
- **Response Payload**:
```json
{
"reqID": {?ReqID},
"msgType": {?MsgType},
"data": {
"code": {?StatusCode},
"codeMsg": {?CodeMsg},
"reqPath": {?RequestPath},
"content": [
{
"path": {?ResourcePath},
"value": {?Value}
}
]
}
}
```
- {?MsgType}: String, can be:
- "observe": LwM2M Observe
- "cancel-observe": LwM2M Cancel Observe
- **"ack"**: [CoAP Empty ACK](https://tools.ietf.org/html/rfc7252#section-5.2.2)
### Notification (Information Reporting Interface - Notify)
- **The notifications from LwM2M clients will be converted to MQTT PUBLISH:**
- **Method:** PUBLISH
- **Topic:** `lwm2m/{?EndpiontName}/up/notify`
- **Notification Payload**:
```json
{
"reqID": {?ReqID},
"msgType": {?MsgType},
"seqNum": {?ObserveSeqNum},
"data": {
"code": {?StatusCode},
"codeMsg": {?CodeMsg},
"reqPath": {?RequestPath},
"content": [
{
"path": {?ResourcePath},
"value": {?Value}
}
]
}
}
```
- {?MsgType}: String, must be "notify"
- {?ObserveSeqNum}: Number, value of "Observe" option in CoAP message
- "content": same to the "content" field contains in the response of "read" command
## Feature limitations
- emqx_lwm2m implements LwM2M gateway to EMQX, not a full-featured and independent LwM2M server.
- emqx_lwm2m does not include LwM2M bootstrap server.
- emqx_lwm2m supports UDP binding, no SMS binding yet.
- Firmware object is not fully supported now since mqtt to coap block-wise transfer is not available.
- Object Versioning is not supported now.
## DTLS
emqx-lwm2m support DTLS to secure UDP data.
Please config lwm2m.certfile and lwm2m.keyfile in emqx_lwm2m.conf. If certfile or keyfile are invalid, DTLS will be turned off and you could read a error message in the log.
## License
Apache License Version 2.0
## Author
EMQX-Men Team.

191
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Copyright 2023, JianBo He <heeejianbo@gmail.com>.
Licensed under the Apache License, Version 2.0 (the "License");
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