From 57fb22e7b49b7da1f4af76cb2dcbeffcf6a4766b Mon Sep 17 00:00:00 2001
From: Luna Stadler <luc@spreadshirt.net>
Date: Mon, 12 Jun 2023 15:00:55 +0200
Subject: [PATCH] Pass along basic auth credentials

Some Prometheus/Thanos/... instances might need it, so let's support
it.  See https://prometheus.io/docs/prometheus/latest/configuration/https/#https-and-authentication
for some details.
---
 prom-revisionist.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/prom-revisionist.go b/prom-revisionist.go
index c1bb26e..bf70d94 100644
--- a/prom-revisionist.go
+++ b/prom-revisionist.go
@@ -137,6 +137,11 @@ func main() {
 		}
 		proxyReq.Header = req.Header
 
+		username, password, ok := req.BasicAuth()
+		if ok {
+			proxyReq.SetBasicAuth(username, password)
+		}
+
 		resp, err := http.DefaultClient.Do(proxyReq)
 		if err != nil {
 			log.Printf("failed to created request: %s", err)
@@ -241,6 +246,11 @@ func main() {
 		}
 		proxyReq.Header = req.Header
 
+		username, password, ok := req.BasicAuth()
+		if ok {
+			proxyReq.SetBasicAuth(username, password)
+		}
+
 		resp, err := http.DefaultClient.Do(proxyReq)
 		if err != nil {
 			log.Printf("failed to created request: %s", err)