dynamic data structure in my owm freeradius module

[Marco Marino]

Hi,
I'm trying to write my own module for freeradius. I'd like to use a
configuration file where i save some recursive structure. eg:

module_name <module_name> {
  var1 = val1
  var2 = val2

  subsection1 subsection1_name {
    var1_1 = val1_1
    var1_2 = val1_2
  }
....
....

  subsectionN subsectionN_name {
    varN_1 = valN_1
    varN_2 = valN_2
  }
}

I'm trying to realize a more simple data structure first, with only one
subsection. An example: http://pastebin.com/JYfh3BuK but i have a segfault.
Someone can help me with this implementation. Should i use
PW_TYPE_SUBSECTION in the main module_config[] structure?
How can i manage the case where there are N subsection of the same type?
Thanks
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