From cfb1a5c8c31835a6f46635aba04c9e8a1ae62f54 Mon Sep 17 00:00:00 2001
From: Jeffrey Paul <jp@eeqj.com>
Date: Wed, 27 Mar 2019 09:06:23 -0700
Subject: [PATCH] add email_to_webhook

---
 forward-email-to-slack-webhook/Makefile       |  4 ++
 forward-email-to-slack-webhook/README.md      | 22 +++++++
 .../email_to_webhook                          | 57 +++++++++++++++++++
 forward-email-to-slack-webhook/install.sh     | 12 ++++
 4 files changed, 95 insertions(+)
 create mode 100644 forward-email-to-slack-webhook/Makefile
 create mode 100644 forward-email-to-slack-webhook/README.md
 create mode 100755 forward-email-to-slack-webhook/email_to_webhook
 create mode 100755 forward-email-to-slack-webhook/install.sh

diff --git a/forward-email-to-slack-webhook/Makefile b/forward-email-to-slack-webhook/Makefile
new file mode 100644
index 0000000..a7fabf4
--- /dev/null
+++ b/forward-email-to-slack-webhook/Makefile
@@ -0,0 +1,4 @@
+default: install
+
+install:
+	bash ./install.sh
diff --git a/forward-email-to-slack-webhook/README.md b/forward-email-to-slack-webhook/README.md
new file mode 100644
index 0000000..0dd886c
--- /dev/null
+++ b/forward-email-to-slack-webhook/README.md
@@ -0,0 +1,22 @@
+# send emails to root to slack
+
+# prerequisites
+
+`apt update && apt -y install git python3 make postfix`
+
+# install
+
+```
+mkdir -p /etc/environment.d
+git clone https://github.com/sneak/hacks.git /tmp/hacks && \
+    cd /tmp/hacks/forward-email-to-slack-webhook && \
+    make install
+```
+
+and
+
+```
+mkdir -p /etc/environment.d
+echo 'https://hooks.slack.com/services/XXXXXX/XXXXXXX/xxxxxxxxxxxxxxxx' >
+    /etc/environment.d/SLACK_WEBHOOK_URL
+```
diff --git a/forward-email-to-slack-webhook/email_to_webhook b/forward-email-to-slack-webhook/email_to_webhook
new file mode 100755
index 0000000..2381f65
--- /dev/null
+++ b/forward-email-to-slack-webhook/email_to_webhook
@@ -0,0 +1,57 @@
+#!/usr/bin/env python3
+
+
+from email import message_from_file
+
+import json
+import os
+import requests
+import sys
+import syslog
+
+hook_url = os.environ.get('SLACK_WEBHOOK_URL')
+
+def main():
+    msg = message_from_file(sys.stdin)
+    try:
+        send_to_slack(dict(msg)['From'],dict(msg)['Subject'],msg.get_payload())
+    except(Exception):
+        syslog.syslog(syslog.LOG_ERR,"webhook failed, message was %s" % msg.get_payload())
+
+
+def send_to_slack(fr,title,body):
+    title = title.strip()
+    body = body.strip()
+    fr = fr.strip()
+
+    slack_data = {
+        'text': "Email from " + fr,
+        'attachments': [
+            {
+                'title': title,
+                'text': body,
+                'fallback': body
+            }
+        ]
+    }
+
+    response = requests.post(
+            hook_url,
+            data=json.dumps(slack_data),
+            headers={'Content-Type': 'application/json'}
+    )
+
+    if response.status_code != 200:
+            syslog.syslog(
+                    syslog.LOG_ERR, "Couldn't send webhook to slack: resp %s %s" % (response.status_code, response.text)
+            )
+            raise ValueError(
+                    'Request to slack returned an error %s, the response is:\n%s'
+                    % (response.status_code, response.text)
+            )
+
+
+if __name__ == "__main__":
+    main()
+
+
diff --git a/forward-email-to-slack-webhook/install.sh b/forward-email-to-slack-webhook/install.sh
new file mode 100755
index 0000000..0ee728b
--- /dev/null
+++ b/forward-email-to-slack-webhook/install.sh
@@ -0,0 +1,12 @@
+#!/bin/bash
+
+D="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+cp $D/email_to_webhook /usr/local/bin/email_to_webhook
+chmod +x /usr/local/bin/email_to_webhook
+
+mkdir -p /etc/environment.d
+
+echo "|/usr/bin/envdir /etc/environment.d /usr/local/bin/email_to_webhook" > /root/.forward
+
+echo "now put your webhook url in /etc/environment.d/SLACK_WEBHOOK_URL"