[PATCH yew-comp] fix #7290: url decode code value in openid redirection authorization

[Shannon Sterz <s.sterz@proxmox.com>]

this should fix a bug that broke compatability with google's oauth
implementation, which seems to regularly use values requiring url
encoding.

Signed-off-by: Shannon Sterz <s.sterz@proxmox.com>
---

tested this against google's o auth provider following this guide:

https://chriscolotti.us/technology/using-google-workspace-oauth-with-proxmox/

set the "Authorized JavaScript origins" and "Authorized redirect URIs"
to "https://pdm-test.erna.proxmox.com:8443" and added a line to my
`/etc/hosts` to make that name resolution work as intended.

 src/utils/mod.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/utils/mod.rs b/src/utils/mod.rs
index 600e436..c007286 100644
--- a/src/utils/mod.rs
+++ b/src/utils/mod.rs
@@ -258,7 +258,9 @@ pub fn openid_redirection_authorization() -> Option<HashMap<String, String>> {

         match (key_value.next(), key_value.next()) {
             (Some("?code") | Some("code"), Some(value)) => {
-                auth.insert("code".to_string(), value.to_string());
+                if let Ok(code) = percent_decode(value.as_bytes()).decode_utf8() {
+                    auth.insert("code".to_string(), code.to_string());
+                }
             }
             (Some("?state") | Some("state"), Some(value)) => {
                 if let Ok(decoded) = percent_decode(value.as_bytes()).decode_utf8() {
--
2.47.3