base64: be a tolerant reader

src/apply.rs

@@ -3,6 +3,8 @@ use log::info;
 use std::path::Path;
 use tokio::fs;
 
+use crate::base64_decode;
+
 pub async fn files(files: &[crate::File], root: &str) -> Result<()> {
     for file in files {
         let path = chroot(root, &file.path);
@@ -16,8 +18,7 @@ pub async fn files(files: &[crate::File], root: &str) -> Result<()> {
         match &file.kind {
             K::Content(content) => fs::write(path, content.as_bytes()).await?,
             K::Content64(content) => {
-                use base64::prelude::{Engine as _, BASE64_STANDARD_NO_PAD as B64};
-                let content = B64.decode(content)?;
+                let content = base64_decode(content)?;
                 fs::write(path, content).await?
             }
             K::Dir(true) => fs::create_dir(path).await?,

src/lib.rs

@@ -81,3 +81,8 @@ impl Config {
         self.files.iter().find(|f| f.path == path)
     }
 }
+
+pub fn base64_decode(s: &str) -> Result<Vec<u8>, base64::DecodeError> {
+    use base64::{prelude::BASE64_STANDARD_NO_PAD as B64, Engine};
+    B64.decode(s.trim_end_matches('='))
+}