from urllib.parse import parse_qs
-from turbot.rot import rot
-import turbot.views
-import turbot.actions
from slack import WebClient
import boto3
import requests
-import hashlib
-import hmac
import json
+import os
+from types import SimpleNamespace
+
+import turbot.actions
+import turbot.commands
+import turbot.events
ssm = boto3.client('ssm')
response = ssm.get_parameter(Name='SLACK_SIGNING_SECRET', WithDecryption=True)
-slack_signing_secret = bytes(response['Parameter']['Value'], 'utf-8')
+slack_signing_secret = response['Parameter']['Value']
+os.environ['SLACK_SIGNING_SECRET'] = slack_signing_secret
+
+# Note: Late import here to have the environment variable above available
+from turbot.slack import slack_is_valid_request # noqa
response = ssm.get_parameter(Name='SLACK_BOT_TOKEN', WithDecryption=True)
slack_bot_token = response['Parameter']['Value']
slack_client = WebClient(slack_bot_token)
+db = boto3.resource('dynamodb')
+
+turb = SimpleNamespace()
+turb.slack_client = slack_client
+turb.db = db
+
def error(message):
"""Generate an error response for a Slack request
'body': ''
}
-def slack_is_valid_request(slack_signature, timestamp, body):
- """Returns True if the timestamp and body correspond to signature.
-
- This implements the Slack signature verification using the slack
- signing secret (obtained via an SSM parameter in code above)."""
-
- content = "v0:{}:{}".format(timestamp, body).encode('utf-8')
-
- signature = 'v0=' + hmac.new(slack_signing_secret,
- content,
- hashlib.sha256).hexdigest()
-
- if hmac.compare_digest(signature, slack_signature):
- return True
- else:
- print("Bad signature: {} != {}".format(signature, slack_signature))
- return False
-
def turbot_lambda(event, context):
"""Top-level entry point for our lambda function.
content_type = headers['content-type']
if (content_type == "application/json"):
- return turbot_event_handler(event, context)
+ return turbot_event_handler(turb, event, context)
if (content_type == "application/x-www-form-urlencoded"):
- return turbot_interactive_or_slash_command(event, context)
+ return turbot_interactive_or_slash_command(turb, event, context)
return error("Unknown content-type: {}".format(content_type))
-def turbot_event_handler(event, context):
+def turbot_event_handler(turb, event, context):
"""Handler for all subscribed Slack events"""
body = json.loads(event['body'])
type = body['type']
if type == 'url_verification':
- return url_verification_handler(body)
+ return url_verification_handler(turb, body)
if type == 'event_callback':
- return event_callback_handler(body)
+ return event_callback_handler(turb, body)
return error("Unknown event type: {}".format(type))
-def url_verification_handler(body):
+def url_verification_handler(turb, body):
# First, we have to properly respond to url_verification
# challenges or else Slack won't let us configure our URL as an
'body': challenge
}
-def event_callback_handler(body):
+def event_callback_handler(turb, body):
type = body['event']['type']
- if type == 'app_home_opened':
- return app_home_opened_handler(body)
+ if type in turbot.events.events:
+ return turbot.events.events[type](turb, body)
return error("Unknown event type: {}".format(type))
-def app_home_opened_handler(body):
- user_id = body['event']['user']
- view = turbot.views.home(user_id, body)
- slack_client.views_publish(user_id=user_id, view=view)
- return "OK"
-
-def turbot_interactive_or_slash_command(event, context):
+def turbot_interactive_or_slash_command(turb, event, context):
"""Handler for Slack interactive things (buttons, shortcuts, etc.)
as well as slash commands.
# The difference is that an interactive thingy has a 'payload'
# while a slash command has a 'command'
if 'payload' in body:
- return turbot_interactive(json.loads(body['payload'][0]))
+ return turbot_interactive(turb, json.loads(body['payload'][0]))
if 'command' in body:
- return turbot_slash_command(body)
+ return turbot_slash_command(turb, body)
return error("Unrecognized event (neither interactive nor slash command)")
-def turbot_interactive(payload):
+def turbot_interactive(turb, payload):
"""Handler for Slack interactive requests
These are the things that come from a user interacting with a button
type = payload['type']
if type == 'block_actions':
- return turbot_block_action(payload)
+ return turbot_block_action(turb, payload)
+ if type == 'view_submission':
+ return turbot.actions.view_submission(turb, payload)
return error("Unrecognized interactive type: {}".format(type))
-def turbot_block_action(payload):
+def turbot_block_action(turb, payload):
"""Handler for Slack interactive block actions
Specifically, those that have a payload type of 'block_actions'"""
atype = action['type']
avalue = action['value']
- if atype == 'button' and avalue == 'new_hunt':
- return turbot.actions.new_hunt(payload)
+ if (
+ atype in turbot.actions.actions
+ and avalue in turbot.actions.actions[atype]
+ ):
+ return turbot.actions.actions[atype][avalue](turb, payload)
return error("Unknown action of type/value: {}/{}".format(atype, avalue))
-def turbot_slash_command(body):
+def turbot_slash_command(turb, body):
"""Implementation for Slack slash commands.
This parses the request and arguments and farms out to
command = body['command'][0]
args = body['text'][0]
- if (command == "/rotlambda" or command == "/rot"):
- return rot_slash_command(body, args)
+ if command in turbot.commands.commands:
+ return turbot.commands.commands[command](turb, body, args)
return error("Command {} not implemented".format(command))
-
-def rot_slash_command(body, args):
- """Implementation of the /rot command
-
- The args string should be as follows:
-
- [count|*] String to be rotated
-
- That is, the first word of the string is an optional number (or
- the character '*'). If this is a number it indicates an amount to
- rotate each character in the string. If the count is '*' or is not
- present, then the string will be rotated through all possible 25
- values.
-
- The result of the rotation is returned (with Slack formatting) in
- the body of the response so that Slack will provide it as a reply
- to the user who submitted the slash command."""
-
- channel_name = body['channel_name'][0]
- response_url = body['response_url'][0]
- channel_id = body['channel_id'][0]
-
- result = rot(args)
-
- if (channel_name == "directmessage"):
- requests.post(response_url,
- json = {"text": result},
- headers = {"Content-type": "application/json"})
- else:
- slack_client.chat_postMessage(channel=channel_id, text=result)
-
- return {
- 'statusCode': 200,
- 'body': ""
- }
projects / turbot / blobdiff