[pve-devel] [PATCH access-control] fix #4074: increase API OpenID code size limit to 2048

[Mira Limbeck <m.limbeck@proxmox.com>]

Azure AD seems to have a variable authorization code size, depending on
the browser state according to one report in bug #4074 [0].

Sometimes the size is greater than our current limit of 1024, so
increase it to 2048.

The RFC [1] mentions that there is no limit to the code size, but based on
current experience, a size limit of 2048 might be enough for every
current OpenID Connect provider.

[0] https://bugzilla.proxmox.com/show_bug.cgi?id=4074
[1] https://datatracker.ietf.org/doc/html/rfc6749#section-4.1.2

Signed-off-by: Mira Limbeck <m.limbeck@proxmox.com>
---
The PBS implementation doesn't seem to be using any code size limit, do
we want to remove it entirely in PVE as well?

 src/PVE/API2/OpenId.pm | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/PVE/API2/OpenId.pm b/src/PVE/API2/OpenId.pm
index c838b2c..8653d61 100644
--- a/src/PVE/API2/OpenId.pm
+++ b/src/PVE/API2/OpenId.pm
@@ -134,7 +134,7 @@ __PACKAGE__->register_method ({
 	    code => {
 		description => "OpenId authorization code.",
 		type => 'string',
-		maxLength => 1024,
+		maxLength => 2048,
             },
 	    'redirect-url' => {
 		description => "Redirection Url. The client should set this to the used server url (location.origin).",
-- 
2.30.2