SAML login option disppeared with 5.0.2. Also, app settings aren't accessible.

[mjsaarin]

After upgrading user_saml to 5.0.2 the SSO login disappeared from the login page. Also, it became impossible to access the SAML SSO app settings via web.

Steps to reproduce

1. Open Settings -> SSO & SAML
2. Server returns an error.

Expected behaviour

The SAML app settings page should open

Actual behaviour

Server returns an error page. The followin log is produced.

{
    "reqId": "Yw3Z2QBvZ21ZlKTgglMcEQAAAIA",
    "level": 3,
    "time": "2022-08-30T12:35:21+03:00",
    "remoteAddr": "..."
    "user": "..."
    "app": "index",
    "method": "GET",
    "url": "/index.php/settings/admin/saml",
    "message": {
        "Exception": "Exception",
        "Message": "Class 'OneLogin\\Saml2\\Constants' not found in file '/opt/nextcloud/apps/user_saml/lib/Settings/Admin.php' line 143",
        "Code": 0,
        "Trace": [
            {
                "file": "/opt/nextcloud/lib/private/AppFramework/App.php",
                "line": 157,
                "function": "dispatch",
                "class": "OC\\AppFramework\\Http\\Dispatcher",
                "type": "->"
            },
            {
                "file": "/opt/nextcloud/lib/private/Route/Router.php",
                "line": 302,
                "function": "main",
                "class": "OC\\AppFramework\\App",
                "type": "::"
            },
            {
                "file": "/opt/nextcloud/lib/base.php",
                "line": 1008,
                "function": "match",
                "class": "OC\\Route\\Router",
                "type": "->"
            },
            {
                "file": "/opt/nextcloud/index.php",
                "line": 36,
                "function": "handleRequest",
                "class": "OC",
                "type": "::"
            }
        ],
        "File": "/opt/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
        "Line": 158,
        "Previous": {
            "Exception": "Error",
            "Message": "Class 'OneLogin\\Saml2\\Constants' not found",
            "Code": 0,
            "Trace": [
                {
                    "file": "/opt/nextcloud/apps/settings/lib/Controller/CommonSettingsTrait.php",
                    "line": 129,
                    "function": "getForm",
                    "class": "OCA\\User_SAML\\Settings\\Admin",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/apps/settings/lib/Controller/AdminSettingsController.php",
                    "function": "formatSettings",
                    "class": "OCA\\Settings\\Controller\\AdminSettingsController",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/apps/settings/lib/Controller/CommonSettingsTrait.php",
                    "line": 140,
                    "function": "getSettings",
                    "class": "OCA\\Settings\\Controller\\AdminSettingsController",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/apps/settings/lib/Controller/AdminSettingsController.php",
                    "line": 68,
                    "function": "getIndexResponse",
                    "class": "OCA\\Settings\\Controller\\AdminSettingsController",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
                    "line": 217,
                    "function": "index",
                    "class": "OCA\\Settings\\Controller\\AdminSettingsController",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/lib/private/AppFramework/Http/Dispatcher.php",
                    "line": 126,
                    "function": "executeController",
                    "class": "OC\\AppFramework\\Http\\Dispatcher",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/lib/private/AppFramework/App.php",
                    "line": 157,
                    "function": "dispatch",
                    "class": "OC\\AppFramework\\Http\\Dispatcher",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/lib/private/Route/Router.php",
                    "line": 302,
                    "function": "main",
                    "class": "OC\\AppFramework\\App",
                    "type": "::"
                },
                {
                    "file": "/opt/nextcloud/lib/base.php",
                    "line": 1008,
                    "function": "match",
                    "class": "OC\\Route\\Router",
                    "type": "->"
                },
                {
                    "file": "/opt/nextcloud/index.php",
                    "line": 36,
                    "function": "handleRequest",
                    "class": "OC",
                    "type": "::"
                }
            ],
            "File": "/opt/nextcloud/apps/user_saml/lib/Settings/Admin.php",
            "Line": 143
        },
        "CustomMessage": "--"
    },
    "userAgent": "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36",
    "version": "23.0.7.3"
}

Downgrading to 5.0.1 fixed the issue.

I also tried the fix in #647 but unfortunately it didn't help.

[blizzz]

did you get the app from the appstore?

[ReimarBauer]

Hi, I am not sure if I have the same problem. nginx error.log throws on request of the application

"message":"chmod(): Operation not permitted at /var/www/nextcloud/lib/private/Log/File.php#86"

I recognized that I got a new log file in /var/log/nextcloud with permissions -rw-r--r-- 1 root root 0 Jun 29 18:11 nextcloud.log

I changed this by chown www-data.www-data nextcloud.log

restarted nginx and now I have the app settings again.

[solracsf]

Is this issue still present on v5.0.3 https://github.com/nextcloud/user_saml/releases/tag/v5.0.3 ?

[mjsaarin]

Sorry for long silence. Yes, the app was installed from app store.

I will check if 5.0.3 still has the issue.

[mjsaarin]

I will check if 5.0.3 still has the issue.

Just tried 5.0.3. This time SAML login works.