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UPSTREAM BASELINE: nextcloud/spreed v22.0.12 (без изменений)
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Источник: https://github.com/nextcloud/spreed/archive/refs/tags/v22.0.12.tar.gz
С этого коммита ветка официального Nextcloud Talk отрезана (решение владельца 2026-07-06).
Все дальнейшие изменения — только наши; версии релизов: 22.0.12-f7.N.
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# Bots and Webhooks
Base endpoint is: `/ocs/v2.php/apps/spreed/api/v1`: (requires the `bots-v1` capability - available since Nextcloud 27.1)
Webhook based bots are available with the Nextcloud 27.1 compatible Nextcloud Talk 17.1 release as a first version
!!! note
For security reasons bots can only be added via the
command line. `./occ talk:bot:install --help` gives you
a short overview of the required arguments, but they are
also explained in the [OCC documentation](occ.md#talkbotinstall).
---
## Signing and Verifying Requests
Messages are signed using the shared secret that is specified when installing a bot on the server.
Create a HMAC with SHA256 over the `RANDOM` header and the request body using the shared secret.
Only when the `SIGNATURE` matches the request should be accepted and handled.
**Sample PHP code:**
```php
$digest = hash_hmac('sha256', $_SERVER['HTTP_X_NEXTCLOUD_TALK_RANDOM'] . file_get_contents('php://input'), $secret);
if (!hash_equals($digest, strtolower($_SERVER['HTTP_X_NEXTCLOUD_TALK_SIGNATURE']))) {
exit;
}
```
## Receiving chat messages
Bot receives all the chat messages following the same signature/verification method.
### Headers
| Header | Content type | Description |
|-----------------------------------|---------------------|------------------------------------------------------|
| `HTTP_X_NEXTCLOUD_TALK_SIGNATURE` | `[a-f0-9]{64}` | SHA265 signature of the body |
| `HTTP_X_NEXTCLOUD_TALK_RANDOM` | `[A-Za-z0-9+\]{64}` | Random string used when signing the body |
| `HTTP_X_NEXTCLOUD_TALK_BACKEND` | URI | Base URL of the Nextcloud server sending the message |
### Content
The content format follows the [Activity Streams 2.0 Vocabulary](https://www.w3.org/TR/activitystreams-vocabulary/).
#### Sample chat message
```json
{
"type": "Create",
"actor": {
"type": "Person",
"id": "users/ada-lovelace",
"name": "Ada Lovelace"
},
"object": {
"type": "Note",
"id": "1567",
"name": "message",
"content": "{\"message\":\"hi {mention-call1} !\",\"parameters\":{\"mention-call1\":{\"type\":\"call\",\"id\":\"n3xtc10ud\",\"name\":\"world\",\"call-type\":\"group\",\"icon-url\":\"https:\\/\\/nextcloud.local\\/ocs\\/v2.php\\/apps\\/spreed\\/api\\/v1\\/room\\/n3xtc10ud\\/avatar\"}}}",
"mediaType": "text/markdown"
},
"target": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
}
}
```
#### Explanation
| Path | Description |
|---------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| actor.id | One of the known [attendee types](constants.md#attendee-types) followed by the `/` slash character and a unique identifier within the given type. For users it is the Nextcloud user ID, for guests and email invited guests a random hash value. |
| actor.name | The display name of the attendee sending the message. |
| actor.talkParticipantType | *Optional:* 🆕 Added in Talk 21. If applicable the attendee's [participant type](constants.md#participant-types) is provided. However this field can not be provided in some cases, e.g. bots. |
| object.id | The message ID of the given message on the origin server. It can be used to react or reply to the given message. |
| object.name | For normal written messages `message`, otherwise one of the known [system message identifiers](chat.md#system-messages). |
| object.content | A JSON encoded dictionary with a `message` and `parameters` key. The message can include placeholders and the [Rich Object parameters](https://github.com/nextcloud/server/blob/master/lib/public/RichObjectStrings/Definitions.php) are rendered into it in the chat view. |
| object.mediaType | `text/markdown` when the message should be interpreted as Markdown. Otherwise `text/plain`. |
| object.inReplyTo | *Optional:* 🆕 Added in Talk 21. If applicable the parent message which was quoted in this message |
| object.inReplyTo.actor | *Optional:* 🆕 Added in Talk 21. Same data as the `actor` |
| object.inReplyTo.object | *Optional:* 🆕 Added in Talk 21. Same data as the `object` (but never contains `inReplyTo`) |
| target.id | The token of the conversation in which the message was posted. It can be used to react or reply to the given message. |
| target.name | The name of the conversation in which the message was posted. |
## Receiving reaction added
🆕 Added in Talk 21. Bots with the `reaction` feature receive special hooks when a reaction was added to a chat message.
### Headers
| Header | Content type | Description |
|-----------------------------------|---------------------|------------------------------------------------------|
| `HTTP_X_NEXTCLOUD_TALK_SIGNATURE` | `[a-f0-9]{64}` | SHA265 signature of the body |
| `HTTP_X_NEXTCLOUD_TALK_RANDOM` | `[A-Za-z0-9+\]{64}` | Random string used when signing the body |
| `HTTP_X_NEXTCLOUD_TALK_BACKEND` | URI | Base URL of the Nextcloud server sending the message |
### Content
The content format follows the [Activity Streams 2.0 Vocabulary](https://www.w3.org/TR/activitystreams-vocabulary/).
#### Sample reaction added message
```json
{
"type": "Like",
"actor": {
"type": "Person",
"id": "users/ada-lovelace",
"name": "Ada Lovelace"
},
"object": {
"type": "Note",
"id": "1567",
"name": "message",
"content": "{\"message\":\"hi {mention-call1} !\",\"parameters\":{\"mention-call1\":{\"type\":\"call\",\"id\":\"n3xtc10ud\",\"name\":\"world\",\"call-type\":\"group\",\"icon-url\":\"https:\\/\\/nextcloud.local\\/ocs\\/v2.php\\/apps\\/spreed\\/api\\/v1\\/room\\/n3xtc10ud\\/avatar\"}}}",
"mediaType": "text/markdown"
},
"target": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
},
"content": "\ud83d\ude06"
}
```
#### Explanation
| Path | Description |
|---------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| actor.id | One of the known [attendee types](constants.md#attendee-types) followed by the `/` slash character and a unique identifier within the given type. For users it is the Nextcloud user ID, for guests and email invited guests a random hash value. |
| actor.name | The display name of the attendee sending the message. |
| actor.talkParticipantType | *Optional:* If applicable the attendee's [participant type](constants.md#participant-types) is provided. However this field can not be provided in some cases, e.g. bots. |
| object.id | The message ID of the given message on the origin server. It can be used to react or reply to the given message. |
| object.name | For normal written messages `message`, otherwise one of the known [system message identifiers](chat.md#system-messages). |
| object.content | A JSON encoded dictionary with a `message` and `parameters` key. The message can include placeholders and the [Rich Object parameters](https://github.com/nextcloud/server/blob/master/lib/public/RichObjectStrings/Definitions.php) are rendered into it in the chat view. |
| object.mediaType | `text/markdown` when the message should be interpreted as Markdown. Otherwise `text/plain`. |
| target.id | The token of the conversation in which the message was posted. It can be used to react or reply to the given message. |
| target.name | The name of the conversation in which the message was posted. |
| content | The reaction emoji that was added |
## Receiving reaction removed
🆕 Added in Talk 21. Bots with the `reaction` feature receive special hooks when a reaction was added to a chat message.
### Headers
| Header | Content type | Description |
|-----------------------------------|---------------------|------------------------------------------------------|
| `HTTP_X_NEXTCLOUD_TALK_SIGNATURE` | `[a-f0-9]{64}` | SHA265 signature of the body |
| `HTTP_X_NEXTCLOUD_TALK_RANDOM` | `[A-Za-z0-9+\]{64}` | Random string used when signing the body |
| `HTTP_X_NEXTCLOUD_TALK_BACKEND` | URI | Base URL of the Nextcloud server sending the message |
### Content
The content format follows the [Activity Streams 2.0 Vocabulary](https://www.w3.org/TR/activitystreams-vocabulary/).
#### Sample reaction removed message
```json
{
"type": "Undo",
"actor": {
"type": "Person",
"id": "users/ada-lovelace",
"name": "Ada Lovelace"
},
"object": {
"type": "Like",
"actor": {
"type": "Person",
"id": "users/ada-lovelace",
"name": "Ada Lovelace"
},
"object": {
"type": "Note",
"id": "1567",
"name": "message",
"content": "{\"message\":\"hi {mention-call1} !\",\"parameters\":{\"mention-call1\":{\"type\":\"call\",\"id\":\"n3xtc10ud\",\"name\":\"world\",\"call-type\":\"group\",\"icon-url\":\"https:\\/\\/nextcloud.local\\/ocs\\/v2.php\\/apps\\/spreed\\/api\\/v1\\/room\\/n3xtc10ud\\/avatar\"}}}",
"mediaType": "text/markdown"
},
"target": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
},
"content": "\ud83d\ude06"
},
"target": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
}
}
```
#### Explanation
| Path | Description |
|---------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| actor.id | One of the known [attendee types](constants.md#attendee-types) followed by the `/` slash character and a unique identifier within the given type. For users it is the Nextcloud user ID, for guests and email invited guests a random hash value. |
| actor.name | The display name of the attendee sending the message. |
| actor.talkParticipantType | *Optional:* If applicable the attendee's [participant type](constants.md#participant-types) is provided. However this field can not be provided in some cases, e.g. bots. |
| object | Full hook content when the reaction was added |
| object.content | The reaction emoji that was removed |
| target.id | The token of the conversation in which the message was posted. It can be used to react or reply to the given message. |
| target.name | The name of the conversation in which the message was posted. |
## Bot added in a chat
When the bot is added to a chat, the server sends a request to the bot, informing it of the event. The same signature/verification method is applied.
### Headers
| Header | Content type | Description |
|-----------------------------------|---------------------|------------------------------------------------------|
| `HTTP_X_NEXTCLOUD_TALK_SIGNATURE` | `[a-f0-9]{64}` | SHA265 signature of the body |
| `HTTP_X_NEXTCLOUD_TALK_RANDOM` | `[A-Za-z0-9+\]{64}` | Random string used when signing the body |
| `HTTP_X_NEXTCLOUD_TALK_BACKEND` | URI | Base URL of the Nextcloud server sending the message |
### Content
The content format follows the [Activity Streams 2.0 Vocabulary](https://www.w3.org/TR/activitystreams-vocabulary/).
#### Sample request
```json
{
"type": "Join",
"actor": {
"type": "Application",
"id": "bots/bot-a78f46c5c203141b247554e180e1aa3553d282c6",
"name": "Bot123"
},
"object": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
}
}
```
#### Explanation
| Path | Description |
|-------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|
| actor.id | Bot's [actor type](constants.md#actor-types-of-chat-messages) followed by the `/` slash character and a bot's unique sha1 identifier with `bot-` prefix. |
| actor.name | The display name of the bot. |
| object.id | The token of the conversation in which the bot was added. |
| object.name | The name of the conversation in which the bot was added. |
## Bot removed from a chat
When the bot is removed from a chat, the server sends a request to the bot, informing it of the event. The same signature/verification method is applied.
### Headers
| Header | Content type | Description |
|-----------------------------------|---------------------|------------------------------------------------------|
| `HTTP_X_NEXTCLOUD_TALK_SIGNATURE` | `[a-f0-9]{64}` | SHA265 signature of the body |
| `HTTP_X_NEXTCLOUD_TALK_RANDOM` | `[A-Za-z0-9+\]{64}` | Random string used when signing the body |
| `HTTP_X_NEXTCLOUD_TALK_BACKEND` | URI | Base URL of the Nextcloud server sending the message |
### Content
The content format follows the [Activity Streams 2.0 Vocabulary](https://www.w3.org/TR/activitystreams-vocabulary/).
#### Sample request
```json
{
"type": "Leave",
"actor": {
"type": "Application",
"id": "bots/bot-a78f46c5c203141b247554e180e1aa3553d282c6",
"name": "Bot123"
},
"object": {
"type": "Collection",
"id": "n3xtc10ud",
"name": "world"
}
}
```
#### Explanation
| Path | Description |
|-------------|----------------------------------------------------------------------------------------------------------------------------------------------------------|
| actor.id | Bot's [actor type](constants.md#actor-types-of-chat-messages) followed by the `/` slash character and a bot's unique sha1 identifier with `bot-` prefix. |
| actor.name | The display name of the bot. |
| object.id | The token of the conversation from which the bot was removed. |
| object.name | The name of the conversation from which the bot was removed. |
## Sending a chat message
Bots can also send message. On the sending process the same signature/verification method is applied.
* Required capability: `bots-v1`
* Method: `POST`
* Endpoint: `/bot/{token}/message`
* Header:
| Name | Description |
|----------------------------------|-----------------------------------------------------------------|
| `X-Nextcloud-Talk-Bot-Random` | The random value used when signing the request |
| `X-Nextcloud-Talk-Bot-Signature` | The signature to validate the request comes from an enabled bot |
| `OCS-APIRequest` | Needs to be set to `true` to access the ocs/vX.php endpoint |
* Data:
| field | type | Description |
|--------------------|--------|---------------------------------------------------------------------------------------------------------------------------------------------------------|
| `message` | string | The message the user wants to say |
| `replyTo` | int | The message ID this message is a reply to (only allowed for messages from the same conversation and when the message type is not `system` or `command`) |
| `referenceId` | string | A reference string to be able to identify the message again in a "get messages" request, should be a random sha256 |
| `silent` | bool | If sent silent the message will not create chat notifications even for users |
* Response:
- Status code:
+ `201 Created` When the message was posted successfully
+ `400 Bad Request` When the provided replyTo parameter is invalid or the message is empty
+ `401 Unauthenticated` When the bot could not be verified for the conversation
+ `404 Not Found` When the conversation could not be found
+ `413 Payload Too Large` When the message was longer than the allowed limit of 32000 characters (or 1000 until Nextcloud 16.0.1, check the `spreed => config => chat => max-length` capability for the limit)
+ `429 Too Many Requests` When `401 Unauthenticated` was triggered too often
## Reacting to a chat message
Bots can also react to a message. The same signature/verification method is applied.
* Required capability: `bots-v1`
* Method: `POST`
* Endpoint: `/bot/{token}/reaction/{messageId}`
* Header:
| Name | Description |
|----------------------------------|-----------------------------------------------------------------|
| `X-Nextcloud-Talk-Bot-Random` | The random value used when signing the request |
| `X-Nextcloud-Talk-Bot-Signature` | The signature to validate the request comes from an enabled bot |
| `OCS-APIRequest` | Needs to be set to `true` to access the ocs/vX.php endpoint |
* Data:
| field | type | Description |
|------------|--------|----------------|
| `reaction` | string | A single emoji |
* Response:
- Status code:
+ `201 Created` When the reaction was created successfully
+ `400 Bad Request` When the provided emoji was invalid
+ `401 Unauthenticated` When the bot could not be verified for the conversation
+ `404 Not Found` When the conversation or message could not be found
+ `429 Too Many Requests` When `401 Unauthenticated` was triggered too often
## Delete a reaction
Bots can also remove their previous reaction from a message. The same signature/verification method is applied.
* Required capability: `bots-v1`
* Method: `DELETE`
* Endpoint: `/bot/{token}/reaction/{messageId}`
* Header:
| Name | Description |
|----------------------------------|-----------------------------------------------------------------|
| `X-Nextcloud-Talk-Bot-Random` | The random value used when signing the request |
| `X-Nextcloud-Talk-Bot-Signature` | The signature to validate the request comes from an enabled bot |
| `OCS-APIRequest` | Needs to be set to `true` to access the ocs/vX.php endpoint |
* Data:
| field | type | Description |
|------------|--------|----------------|
| `reaction` | string | A single emoji |
* Response:
- Status code:
+ `200 OK` When the reaction was deleted successfully
+ `400 Bad Request` When the provided emoji was invalid
+ `401 Unauthenticated` When the bot could not be verified for the conversation
+ `404 Not Found` When the conversation or message could not be found
+ `429 Too Many Requests` When `401 Unauthenticated` was triggered too often
## Nextcloud apps as a bot
🆕 Added in Talk 21.
Instead of being webhook based, bots can also listen to the [`OCA\Talk\Events\BotInvokeEvent` PHP events](events.md#bot-invoke) and get invoked with the same content.
The event allows to `addAnswer()` and `addReaction()` which will then be posted and reacted as the bot.
The advantage is that a web request can be saved, reducing the load on the system.
When installing the bot specify `nextcloudapp://$APPID` as the bot URL, together with the `4` as a [Bot feature flag](constants.md#bot-features).
## Changelog
### Nextcloud 27.1 / Talk 17.1 - September 2023
- Initial version
### Nextcloud 31 / Talk 21 - February 2025
- Added direct support for Nextcloud apps as bots. A new feature flag `events` which indicates that a bot will utilize the `OCA\Talk\Events\BotInvokeEvent` event listed in [PHP events](events.md#bot-invoke) rather than being invoked via a webhook.
- Added new feature flag `reaction` which allows to get invoked for added and removed reactions
- In hooks that are replies the new optional field `object.inReplyTo` contains the actor and content of the parent chat message