#!/usr/bin/python # -*- coding: utf-8 -*- # Copyright (c) 2020, Lee Goolsbee # Copyright (c) 2020, Michal Middleton # Copyright (c) 2017, Steve Pletcher # Copyright (c) 2016, René Moser # Copyright (c) 2015, Stefan Berggren # Copyright (c) 2014, Ramon de la Fuente # # GNU General Public License v3.0+ (see LICENSES/GPL-3.0-or-later.txt or https://www.gnu.org/licenses/gpl-3.0.txt) # SPDX-License-Identifier: GPL-3.0-or-later from __future__ import absolute_import, division, print_function __metaclass__ = type DOCUMENTATION = """ module: slack short_description: Send Slack notifications description: - The C(slack) module sends notifications to U(http://slack.com) via the Incoming WebHook integration author: "Ramon de la Fuente (@ramondelafuente)" extends_documentation_fragment: - community.general.attributes attributes: check_mode: support: full diff_mode: support: none options: domain: type: str description: - Slack (sub)domain for your environment without protocol. (i.e. C(example.slack.com)) In 1.8 and beyond, this is deprecated and may be ignored. See token documentation for information. token: type: str description: - Slack integration token. This authenticates you to the slack service. Make sure to use the correct type of token, depending on what method you use. - "Webhook token: Prior to 1.8, a token looked like C(3Ffe373sfhRE6y42Fg3rvf4GlK). In 1.8 and above, ansible adapts to the new slack API where tokens look like C(G922VJP24/D921DW937/3Ffe373sfhRE6y42Fg3rvf4GlK). If tokens are in the new format then slack will ignore any value of domain. If the token is in the old format the domain is required. Ansible has no control of when slack will get rid of the old API. When slack does that the old format will stop working. ** Please keep in mind the tokens are not the API tokens but are the webhook tokens. In slack these are found in the webhook URL which are obtained under the apps and integrations. The incoming webhooks can be added in that area. In some cases this may be locked by your Slack admin and you must request access. It is there that the incoming webhooks can be added. The key is on the end of the URL given to you in that section." - "WebAPI token: Slack WebAPI requires a personal, bot or work application token. These tokens start with C(xoxp-), C(xoxb-) or C(xoxa-), eg. C(xoxb-1234-56789abcdefghijklmnop). WebAPI token is required if you intend to receive thread_id. See Slack's documentation (U(https://api.slack.com/docs/token-types)) for more information." required: true msg: type: str description: - Message to send. Note that the module does not handle escaping characters. Plain-text angle brackets and ampersands should be converted to HTML entities (e.g. & to &) before sending. See Slack's documentation (U(https://api.slack.com/docs/message-formatting)) for more. channel: type: str description: - Channel to send the message to. If absent, the message goes to the channel selected for the I(token). thread_id: description: - Optional. Timestamp of parent message to thread this message. https://api.slack.com/docs/message-threading type: str message_id: description: - Optional. Message ID to edit, instead of posting a new message. - If supplied I(channel_id) must be in form of C(C0xxxxxxx). use C({{ slack_response.channel_id }}) to get I(channel_id) from previous task run. - Corresponds to C(ts) in the Slack API (U(https://api.slack.com/messaging/modifying)). type: str version_added: 1.2.0 username: type: str description: - This is the sender of the message. default: "Ansible" icon_url: type: str description: - URL for the message sender's icon (default C(https://docs.ansible.com/favicon.ico)) default: https://docs.ansible.com/favicon.ico icon_emoji: type: str description: - Emoji for the message sender. See Slack documentation for options. (if I(icon_emoji) is set, I(icon_url) will not be used) link_names: type: int description: - Automatically create links for channels and usernames in I(msg). default: 1 choices: - 1 - 0 parse: type: str description: - Setting for the message parser at Slack choices: - 'full' - 'none' validate_certs: description: - If C(false), SSL certificates will not be validated. This should only be used on personally controlled sites using self-signed certificates. type: bool default: true color: type: str description: - Allow text to use default colors - use the default of 'normal' to not send a custom color bar at the start of the message. - Allowed values for color can be one of 'normal', 'good', 'warning', 'danger', any valid 3 digit or 6 digit hex color value. - Specifying value in hex is supported since Ansible 2.8. default: 'normal' attachments: type: list elements: dict description: - Define a list of attachments. This list mirrors the Slack JSON API. - For more information, see U(https://api.slack.com/docs/attachments). blocks: description: - Define a list of blocks. This list mirrors the Slack JSON API. - For more information, see U(https://api.slack.com/block-kit). type: list elements: dict version_added: 1.0.0 prepend_hash: type: str description: - Setting for automatically prepending a C(#) symbol on the passed in I(channel_id). - The C(auto) method prepends a C(#) unless I(channel_id) starts with one of C(#), C(@), C(C0), C(GF), C(G0), C(CP). These prefixes only cover a small set of the prefixes that should not have a C(#) prepended. Since an exact condition which I(channel_id) values must not have the C(#) prefix is not known, the value C(auto) for this option will be deprecated in the future. It is best to explicitly set I(prepend_hash=always) or I(prepend_hash=never) to obtain the needed behavior. choices: - 'always' - 'never' - 'auto' default: 'auto' version_added: 6.1.0 """ EXAMPLES = """ - name: Send notification message via Slack community.general.slack: token: thetoken/generatedby/slack msg: '{{ inventory_hostname }} completed' delegate_to: localhost - name: Send notification message via Slack all options community.general.slack: token: thetoken/generatedby/slack msg: '{{ inventory_hostname }} completed' channel: '#ansible' thread_id: '1539917263.000100' username: 'Ansible on {{ inventory_hostname }}' icon_url: http://www.example.com/some-image-file.png link_names: 0 parse: 'none' delegate_to: localhost - name: Insert a color bar in front of the message for visibility purposes and use the default webhook icon and name configured in Slack community.general.slack: token: thetoken/generatedby/slack msg: '{{ inventory_hostname }} is alive!' color: good username: '' icon_url: '' - name: Insert a color bar in front of the message with valid hex color value community.general.slack: token: thetoken/generatedby/slack msg: 'This message uses color in hex value' color: '#00aacc' username: '' icon_url: '' - name: Use the attachments API community.general.slack: token: thetoken/generatedby/slack attachments: - text: Display my system load on host A and B color: '#ff00dd' title: System load fields: - title: System A value: "load average: 0,74, 0,66, 0,63" short: true - title: System B value: 'load average: 5,16, 4,64, 2,43' short: true - name: Use the blocks API community.general.slack: token: thetoken/generatedby/slack blocks: - type: section text: type: mrkdwn text: |- *System load* Display my system load on host A and B - type: context elements: - type: mrkdwn text: |- *System A* load average: 0,74, 0,66, 0,63 - type: mrkdwn text: |- *System B* load average: 5,16, 4,64, 2,43 - name: Send a message with a link using Slack markup community.general.slack: token: thetoken/generatedby/slack msg: We sent this message using ! - name: Send a message with angle brackets and ampersands community.general.slack: token: thetoken/generatedby/slack msg: This message has <brackets> & ampersands in plain text. - name: Initial Threaded Slack message community.general.slack: channel: '#ansible' token: xoxb-1234-56789abcdefghijklmnop msg: 'Starting a thread with my initial post.' register: slack_response - name: Add more info to thread community.general.slack: channel: '#ansible' token: xoxb-1234-56789abcdefghijklmnop thread_id: "{{ slack_response['ts'] }}" color: good msg: 'And this is my threaded response!' - name: Send a message to be edited later on community.general.slack: token: thetoken/generatedby/slack channel: '#ansible' msg: Deploying something... register: slack_response - name: Edit message community.general.slack: token: thetoken/generatedby/slack # The 'channel' option does not accept the channel name. It must use the 'channel_id', # which can be retrieved for example from 'slack_response' from the previous task. channel: "{{ slack_response.channel }}" msg: Deployment complete! message_id: "{{ slack_response.ts }}" """ import re from ansible.module_utils.basic import AnsibleModule from ansible.module_utils.six.moves.urllib.parse import urlencode from ansible.module_utils.urls import fetch_url OLD_SLACK_INCOMING_WEBHOOK = 'https://%s/services/hooks/incoming-webhook?token=%s' SLACK_INCOMING_WEBHOOK = 'https://hooks.slack.com/services/%s' SLACK_POSTMESSAGE_WEBAPI = 'https://slack.com/api/chat.postMessage' SLACK_UPDATEMESSAGE_WEBAPI = 'https://slack.com/api/chat.update' SLACK_CONVERSATIONS_HISTORY_WEBAPI = 'https://slack.com/api/conversations.history' # Escaping quotes and apostrophes to avoid ending string prematurely in ansible call. # We do not escape other characters used as Slack metacharacters (e.g. &, <, >). escape_table = { '"': "\"", "'": "\'", } def is_valid_hex_color(color_choice): if re.match(r'^#([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$', color_choice): return True return False def escape_quotes(text): """Backslash any quotes within text.""" return "".join(escape_table.get(c, c) for c in text) def recursive_escape_quotes(obj, keys): """Recursively escape quotes inside supplied keys inside block kit objects""" if isinstance(obj, dict): escaped = {} for k, v in obj.items(): if isinstance(v, str) and k in keys: escaped[k] = escape_quotes(v) else: escaped[k] = recursive_escape_quotes(v, keys) elif isinstance(obj, list): escaped = [recursive_escape_quotes(v, keys) for v in obj] else: escaped = obj return escaped def build_payload_for_slack(text, channel, thread_id, username, icon_url, icon_emoji, link_names, parse, color, attachments, blocks, message_id, prepend_hash): payload = {} if color == "normal" and text is not None: payload = dict(text=escape_quotes(text)) elif text is not None: # With a custom color we have to set the message as attachment, and explicitly turn markdown parsing on for it. payload = dict(attachments=[dict(text=escape_quotes(text), color=color, mrkdwn_in=["text"])]) if channel is not None: if prepend_hash == 'auto': if channel.startswith(('#', '@', 'C0', 'GF', 'G0', 'CP')): payload['channel'] = channel else: payload['channel'] = '#' + channel elif prepend_hash == 'always': payload['channel'] = '#' + channel elif prepend_hash == 'never': payload['channel'] = channel if thread_id is not None: payload['thread_ts'] = thread_id if username is not None: payload['username'] = username if icon_emoji is not None: payload['icon_emoji'] = icon_emoji else: payload['icon_url'] = icon_url if link_names is not None: payload['link_names'] = link_names if parse is not None: payload['parse'] = parse if message_id is not None: payload['ts'] = message_id if attachments is not None: if 'attachments' not in payload: payload['attachments'] = [] if attachments is not None: attachment_keys_to_escape = [ 'title', 'text', 'author_name', 'pretext', 'fallback', ] for attachment in attachments: for key in attachment_keys_to_escape: if key in attachment: attachment[key] = escape_quotes(attachment[key]) if 'fallback' not in attachment: attachment['fallback'] = attachment['text'] payload['attachments'].append(attachment) if blocks is not None: block_keys_to_escape = [ 'text', 'alt_text' ] payload['blocks'] = recursive_escape_quotes(blocks, block_keys_to_escape) return payload def get_slack_message(module, token, channel, ts): headers = { 'Content-Type': 'application/json; charset=UTF-8', 'Accept': 'application/json', 'Authorization': 'Bearer ' + token } qs = urlencode({ 'channel': channel, 'ts': ts, 'limit': 1, 'inclusive': 'true', }) url = SLACK_CONVERSATIONS_HISTORY_WEBAPI + '?' + qs response, info = fetch_url(module=module, url=url, headers=headers, method='GET') if info['status'] != 200: module.fail_json(msg="failed to get slack message") data = module.from_json(response.read()) if len(data['messages']) < 1: module.fail_json(msg="no messages matching ts: %s" % ts) if len(data['messages']) > 1: module.fail_json(msg="more than 1 message matching ts: %s" % ts) return data['messages'][0] def do_notify_slack(module, domain, token, payload): use_webapi = False if token.count('/') >= 2: # New style webhook token slack_uri = SLACK_INCOMING_WEBHOOK % token elif re.match(r'^xox[abp]-\S+$', token): slack_uri = SLACK_UPDATEMESSAGE_WEBAPI if 'ts' in payload else SLACK_POSTMESSAGE_WEBAPI use_webapi = True else: if not domain: module.fail_json(msg="Slack has updated its webhook API. You need to specify a token of the form " "XXXX/YYYY/ZZZZ in your playbook") slack_uri = OLD_SLACK_INCOMING_WEBHOOK % (domain, token) headers = { 'Content-Type': 'application/json; charset=UTF-8', 'Accept': 'application/json', } if use_webapi: headers['Authorization'] = 'Bearer ' + token data = module.jsonify(payload) response, info = fetch_url(module=module, url=slack_uri, headers=headers, method='POST', data=data) if info['status'] != 200: if use_webapi: obscured_incoming_webhook = slack_uri else: obscured_incoming_webhook = SLACK_INCOMING_WEBHOOK % '[obscured]' module.fail_json(msg=" failed to send %s to %s: %s" % (data, obscured_incoming_webhook, info['msg'])) # each API requires different handling if use_webapi: return module.from_json(response.read()) else: return {'webhook': 'ok'} def main(): module = AnsibleModule( argument_spec=dict( domain=dict(type='str'), token=dict(type='str', required=True, no_log=True), msg=dict(type='str'), channel=dict(type='str'), thread_id=dict(type='str'), username=dict(type='str', default='Ansible'), icon_url=dict(type='str', default='https://docs.ansible.com/favicon.ico'), icon_emoji=dict(type='str'), link_names=dict(type='int', default=1, choices=[0, 1]), parse=dict(type='str', choices=['none', 'full']), validate_certs=dict(default=True, type='bool'), color=dict(type='str', default='normal'), attachments=dict(type='list', elements='dict'), blocks=dict(type='list', elements='dict'), message_id=dict(type='str'), prepend_hash=dict(type='str', default='auto', choices=['always', 'never', 'auto']), ), supports_check_mode=True, ) domain = module.params['domain'] token = module.params['token'] text = module.params['msg'] channel = module.params['channel'] thread_id = module.params['thread_id'] username = module.params['username'] icon_url = module.params['icon_url'] icon_emoji = module.params['icon_emoji'] link_names = module.params['link_names'] parse = module.params['parse'] color = module.params['color'] attachments = module.params['attachments'] blocks = module.params['blocks'] message_id = module.params['message_id'] prepend_hash = module.params['prepend_hash'] color_choices = ['normal', 'good', 'warning', 'danger'] if color not in color_choices and not is_valid_hex_color(color): module.fail_json(msg="Color value specified should be either one of %r " "or any valid hex value with length 3 or 6." % color_choices) changed = True # if updating an existing message, we can check if there's anything to update if message_id is not None: changed = False msg = get_slack_message(module, token, channel, message_id) for key in ('icon_url', 'icon_emoji', 'link_names', 'color', 'attachments', 'blocks'): if msg.get(key) != module.params.get(key): changed = True break # if check mode is active, we shouldn't do anything regardless. # if changed=False, we don't need to do anything, so don't do it. if module.check_mode or not changed: module.exit_json(changed=changed, ts=msg['ts'], channel=msg['channel']) elif module.check_mode: module.exit_json(changed=changed) payload = build_payload_for_slack(text, channel, thread_id, username, icon_url, icon_emoji, link_names, parse, color, attachments, blocks, message_id, prepend_hash) slack_response = do_notify_slack(module, domain, token, payload) if 'ok' in slack_response: # Evaluate WebAPI response if slack_response['ok']: # return payload as a string for backwards compatibility payload_json = module.jsonify(payload) module.exit_json(changed=changed, ts=slack_response['ts'], channel=slack_response['channel'], api=slack_response, payload=payload_json) else: module.fail_json(msg="Slack API error", error=slack_response['error']) else: # Exit with plain OK from WebHook, since we don't have more information # If we get 200 from webhook, the only answer is OK module.exit_json(msg="OK") if __name__ == '__main__': main()