Revision of Github Webhook Proxy

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1 file changed, 1 insertion, 1 deletion

__main__.py

			@@ -42,7 +42,7 @@ def github_payload():
42	42		signature = request.headers.get("X-Hub-Signature")
43	43		data = request.data
44	44		if not verify_hmac_hash(data, signature):
45		-	app.logger.debug("failed to verify signature!")
	45	+	app.logger.debug("failed to verify signature... aborting request")
46	46		abort(403)
47	47
48	48		payload = request.get_json()

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1 file changed, 1 insertion, 1 deletion

__main__.py

			@@ -70,7 +70,7 @@ def issues_handler(payload):
70	70		"username": "Github-OpenGist",
71	71		"embeds": [embed],
72	72		}
73		-	send_discord_webhook(app.config["DISCORD_WEBHOOK"], data=data)
	73	+	send_discord_webhook(app.config["DISCORD_WEBHOOK"], data)
74	74
75	75
76	76		def send_discord_webhook(webhook_url, data):

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1 file changed, 1 insertion, 1 deletion

__main__.py

			@@ -52,7 +52,7 @@ def github_payload():
52	52		case "issues":
53	53		issues_handler(payload)
54	54		case _:
55		-	app.logger.debug(f"no action defined for event {event_type}... continuing")
	55	+	app.logger.debug(f"no handler defined for event {event_type}... continuing")
56	56		return ("", 200, None)
57	57
58	58

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1 file changed, 1 insertion, 1 deletion

__main__.py

			@@ -34,7 +34,7 @@ def verify_hmac_hash(data, signature):
34	34
35	35		@app.route("/github-payload", methods=["POST"])
36	36		def github_payload():
37		-	src_ip = ip_address(request.headers.get("X-Real-IP", , request.access_route[0]))
	37	+	src_ip = ip_address(request.headers.get("X-Real-IP", request.access_route[0]))
38	38		if not verify_src_ip(src_ip):
39	39		app.logger.debug(f"invalid source ip: {src_ip}... aborting request")
40	40		abort(403)

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1 file changed, 1 insertion, 1 deletion

__main__.py

			@@ -34,7 +34,7 @@ def verify_hmac_hash(data, signature):
34	34
35	35		@app.route("/github-payload", methods=["POST"])
36	36		def github_payload():
37		-	src_ip = ip_address(request.headers.get("X-Real-IP"))
	37	+	src_ip = ip_address(request.headers.get("X-Real-IP", , request.access_route[0]))
38	38		if not verify_src_ip(src_ip):
39	39		app.logger.debug(f"invalid source ip: {src_ip}... aborting request")
40	40		abort(403)

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1 file changed, 81 insertions

__main__.py(arquivo criado)

		@@ -0,0 +1,81 @@
1	+	import hashlib
2	+	import hmac
3	+	import json
4	+	import os
5	+	from ipaddress import ip_address, ip_network
6	+
7	+	import requests
8	+	from dotenv import load_dotenv
9	+	from flask import Flask, abort, request
10	+
11	+
12	+	def create_app():
13	+	app = Flask(__name__)
14	+	load_dotenv()
15	+	app.config["GITHUB_SECRET"] = os.getenv("GITHUB_SECRET")
16	+	app.config["DISCORD_WEBHOOK"] = os.getenv("DISCORD_WEBHOOK")
17	+
18	+	return app
19	+
20	+
21	+	app = create_app()
22	+
23	+
24	+	def verify_src_ip(src_ip):
25	+	allowed_ips = requests.get("https://api.github.com/meta").json()["hooks"]
26	+	return any(src_ip in ip_network(valid_ip) for valid_ip in allowed_ips)
27	+
28	+
29	+	def verify_hmac_hash(data, signature):
30	+	github_secret = bytes(app.config["GITHUB_SECRET"], "ascii")
31	+	mac = hmac.new(github_secret, msg=data, digestmod=hashlib.sha1)
32	+	return hmac.compare_digest("sha1=" + mac.hexdigest(), signature)
33	+
34	+
35	+	@app.route("/github-payload", methods=["POST"])
36	+	def github_payload():
37	+	src_ip = ip_address(request.headers.get("X-Real-IP"))
38	+	if not verify_src_ip(src_ip):
39	+	app.logger.debug(f"invalid source ip: {src_ip}... aborting request")
40	+	abort(403)
41	+
42	+	signature = request.headers.get("X-Hub-Signature")
43	+	data = request.data
44	+	if not verify_hmac_hash(data, signature):
45	+	app.logger.debug("failed to verify signature!")
46	+	abort(403)
47	+
48	+	payload = request.get_json()
49	+	match event_type := request.headers.get("X-GitHub-Event"):
50	+	case "ping":
51	+	return json.dumps({"msg": "pong"})
52	+	case "issues":
53	+	issues_handler(payload)
54	+	case _:
55	+	app.logger.debug(f"no action defined for event {event_type}... continuing")
56	+	return ("", 200, None)
57	+
58	+
59	+	def issues_handler(payload):
60	+	embed = {
61	+	"author": {
62	+	"name": payload["sender"]["login"],
63	+	"icon_url": payload["sender"]["avatar_url"],
64	+	},
65	+	"title": f"[{payload['repository']['full_name']}] Issue {payload['action'].capitalize()}: #{payload['issue']['number']} {payload['issue']['title']}",
66	+	"url": payload["issue"]["html_url"],
67	+	"description": payload["issue"].get("body"),
68	+	}
69	+	data = {
70	+	"username": "Github-OpenGist",
71	+	"embeds": [embed],
72	+	}
73	+	send_discord_webhook(app.config["DISCORD_WEBHOOK"], data=data)
74	+
75	+
76	+	def send_discord_webhook(webhook_url, data):
77	+	requests.post(webhook_url, json=data)
78	+
79	+
80	+	if __name__ == "__main__":
81	+	app.run(debug=True, port=5000)

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