If语句的计算结果不一致

Question

下面是我在copy-acct-to-home-server中部署的代码片段。它主要是检查用户名是否有"@“符号...如果是，则从mysql表中提取huntgroup，比较NAS-IP-Address。最后，如果查询的结果不为空，则更新代理到领域。

if(request:User-Name =~ /@/){
                            update control {
                                    SQLQueryResult := "%{sql:SELECT `groupname` FROM `radhuntgroup` WHERE nasipaddress='%{NAS-IP-Address}'}" }
                            if( %{control:SQLQueryResult} != '') {
                                    update control {
                                    Proxy-To-Realm := SQLQueryResult } }
                    }

这段代码并没有像我期望的那样工作。下面是true和false条件下的调试消息片段结果

当从数据库中提取一些值时，代理到领域应该已经分配了适当的值(但它不起作用)

 Acct-Session-Id = "5CD8CA8B-0012B000"
    Framed-IP-Address = host.ip.address.local
    Acct-Multi-Session-Id = "24c9a18012b85c514f44f9715cd8ca8b085b"
    Acct-Link-Count = 1
    Acct-Status-Type = Start
    Acct-Authentic = RADIUS
    User-Name = "user@domain.com"
    NAS-IP-Address = some.ip.add.NAS
    NAS-Identifier = "CustomNASID"

   .........



    --> user@domain.com
(6)         SQL-User-Name set to 'user@domain.com'
rlm_sql (sql): Reserved connection (5)
(6)         EXPAND /var/log/freeradius/sqllog.sql
(6)            --> /var/log/freeradius/sqllog.sql
(6)         Executing select query: SELECT `groupname` FROM `radhuntgroup` WHERE nasipaddress='some.ip.add.NAS'
rlm_sql (sql): Released connection (5)
(6)         EXPAND %{sql:SELECT `groupname` FROM `radhuntgroup` WHERE nasipaddress='%{NAS-IP-Address}'}
(6)            --> customRealm
(6)         SQLQueryResult := customRealm
(6)       } # update control = noop
(6)       if ( %{control:SQLQueryResult} != '') {
(6)       if ( %{control:SQLQueryResult} != '')  -> TRUE
(6)       if ( %{control:SQLQueryResult} != '')  {
(6)         update control {
(6)           No attributes updated
(6)         } # update control = noop
(6)       } # if ( %{control:SQLQueryResult} != '')  = noop
(6)     } # if (request:User-Name =~ /@/) = noop
(6)   } # preacct = ok

从日志中可以看出，即使两个if条件都为真(用户名包含@且SQLQueryResult不为空)，它也没有使用从数据库获取的值更新属性proxy-to-realm

If条件似乎为真，即使没有从数据库中提取任何值。这是日志片段。

 Acct-Session-Id = "5CD8C9F7-C1DA2D04"
    Framed-IP-Address = host.ip.address.local
    Acct-Multi-Session-Id = "441e98b16388185680b4a7355cd8c9f7000a"
    Acct-Link-Count = 5
    Acct-Status-Type = Interim-Update
    Acct-Authentic = RADIUS
    User-Name = "user@somedomain"
    NAS-IP-Address = some.ip.address.nas


   ...........



    Executing section preacct from file /etc/freeradius/3.0/sites-enabled/copy-acct-to-home-server
(8)   preacct {
(8)     [preprocess] = ok
(8)     if (request:User-Name =~ /@/){
(8)     if (request:User-Name =~ /@/) -> TRUE
(8)     if (request:User-Name =~ /@/) {
(8)       update control {
(8)         EXPAND %{User-Name}
(8)            --> user@domain.com
(8)         SQL-User-Name set to 'user@domain.com'
rlm_sql (sql): Reserved connection (6)
(8)         EXPAND /var/log/freeradius/sqllog.sql
(8)            --> /var/log/freeradius/sqllog.sql
(8)         Executing select query: SELECT `groupname` FROM `radhuntgroup` WHERE nasipaddress='nas.ip.address.local'
(8)         SQL query returned no results
rlm_sql (sql): Released connection (6)
(8)         EXPAND %{sql:SELECT `groupname` FROM `radhuntgroup` WHERE nasipaddress='%{NAS-IP-Address}'}
(8)            --> 
(8)         SQLQueryResult := 
(8)       } # update control = noop
(8)       if ( %{control:SQLQueryResult} != '') {
(8)       if ( %{control:SQLQueryResult} != '')  -> TRUE
(8)       if ( %{control:SQLQueryResult} != '')  {
(8)         update control {
(8)           No attributes updated
(8)         } # update control = noop
(8)       } # if ( %{control:SQLQueryResult} != '')  = noop
(8)     } # if (request:User-Name =~ /@/) = noop
(8)   } # preacct = ok

奇怪的是，如果(SQLQueryResult != '')在这种情况下应该为假，那么它不会从db第二个if条件中提取任何值。

属性SQLQueryResult已在字典中定义为字符串。

我不确定我在这里错过了什么。这似乎是一个简单的逻辑。请求专家的帮助。

Answer 1

这里有几个问题。

首先，部分的右大括号应该始终在新行上。配置解析器不是很好，这可能会让它出错。

其次，您混合了属性引用和扩展语法。

if( %{control:SQLQueryResult} != '') {

以上内容无效。老实说，我很惊讶表达式解析器没有抛出错误。这可能是因为%{control:SQLQueryResult}中没有空格，所以它将其视为字符串文字，然后将字符串文字与空字符串进行比较。

您需要将展开括在双引号中

if ("%{control:SQLQueryResult}" != '') {

或使用属性引用表单

if (&control:SQLQueryResult != '') {

我很确定这就是你的问题所在。