From dc96dd55496db20187bf0d01b3dd88cd72165a0d Mon Sep 17 00:00:00 2001
From: Cyborus <cyborus@cyborus.xyz>
Date: Mon, 27 May 2024 13:09:51 -0400
Subject: fix basic auth base64 encoding length calculation

---
 src/lib.rs | 10 ++++++----
 1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/src/lib.rs b/src/lib.rs
index a87a696..d9b877e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -99,11 +99,13 @@ impl Forgejo {
                 password,
                 mfa,
             } => {
-                let len = (((username.len() + password.len() + 1)
+                let unencoded_len = username.len() + password.len() + 1;
+                let unpadded_len = unencoded_len
                     .checked_mul(4)
-                    .ok_or(ForgejoError::AuthTooLong)?)
-                    / 3)
-                    + 1;
+                    .ok_or(ForgejoError::AuthTooLong)?
+                    .div_ceil(3);
+                // round up to next multiple of 4, to account for padding
+                let len = unpadded_len.div_ceil(4) * 4;
                 let mut bytes = vec![0; len];
 
                 // panic safety: len cannot be zero
-- 
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