nginx-proxy-manager-zh/backend/templates/_openid_connect.conf

{% if openidc_enabled -%}
    access_by_lua_block {
	    local openidc = require("resty.openidc")
        local opts = {
            redirect_uri = "{{- openidc_redirect_uri -}}",
            discovery = "{{- openidc_discovery -}}",
            token_endpoint_auth_method = "{{- openidc_auth_method -}}",
            client_id = "{{- openidc_client_id -}}",
            client_secret = "{{- openidc_client_secret -}}",
            scope = "openid email profile"
        }

        local res, err = openidc.authenticate(opts)

        if err then
            ngx.status = 500
            ngx.say(err)
            ngx.exit(ngx.HTTP_INTERNAL_SERVER_ERROR)
        end


        ngx.req.set_header("X-OIDC-SUB", res.id_token.sub)
        ngx.req.set_header("X-OIDC-EMAIL", res.id_token.email)
        ngx.req.set_header("X-OIDC-NAME", res.id_token.name)
    }
{% endif %}