First pass at cablelabs nonsense

It doesn't do anything.  But we've at least recorded the structures
necessary for full decoding

diff --git a/src/modules/rlm_preprocess/rlm_preprocess.c b/src/modules/rlm_preprocess/rlm_preprocess.c
index 41e200e..02862e6 100644 (file)
--- a/src/modules/rlm_preprocess/rlm_preprocess.c
+++ b/src/modules/rlm_preprocess/rlm_preprocess.c
@@ -43,6 +43,7 @@ typedef struct rlm_preprocess_t {
        int             with_specialix_jetstream_hack;
        int             with_cisco_vsa_hack;
        int             with_alvarion_vsa_hack;
+       int             with_cablelabs_vsa_hack;
 } rlm_preprocess_t;
 
 static const CONF_PARSER module_config[] = {
@@ -66,6 +67,8 @@ static const CONF_PARSER module_config[] = {
          offsetof(rlm_preprocess_t,with_cisco_vsa_hack), NULL, "no" },
        { "with_alvarion_vsa_hack",        PW_TYPE_BOOLEAN,
          offsetof(rlm_preprocess_t,with_alvarion_vsa_hack), NULL, "no" },
+       { "with_cablelabs_vsa_hack",        PW_TYPE_BOOLEAN,
+         offsetof(rlm_preprocess_t,with_cablelabs_vsa_hack), NULL, NULL },
 
        { NULL, -1, 0, NULL, NULL }
 };
@@ -201,6 +204,66 @@ static void alvarion_vsa_hack(VALUE_PAIR *vp)
 }
 
 /*
+ *     Cablelabs magic, taken from:
+ *
+ * http://www.cablelabs.com/packetcable/downloads/specs/PKT-SP-EM-I12-05812.pdf
+ *
+ *     Sample data is:
+ *
+ *     0x0001d2d2026d30310000000000003030
+ *       3130303030000e812333000100033031
+ *       00000000000030303130303030000000
+ *       00063230313230313331303630323231
+ *       2e3633390000000081000500
+ */
+
+typedef struct cl_timezone_t {
+       uint8_t         dst;
+       uint8_t         sign;
+       uint8_t         hh[2];
+       uint8_t         mm[2];
+       uint8_t         ss[2];
+} cl_timezone_t;
+
+typedef struct cl_bcid_t {
+       uint32_t        timestamp;
+       uint8_t         element_id[8];
+       cl_timezone_t   timezone;
+       uint32_t        event_counter;
+} cl_bcid_t;
+
+typedef struct cl_em_hdr_t {
+       uint16_t        version;
+       cl_bcid_t       bcid;
+       uint16_t        message_type;
+       uint16_t        element_type;
+       uint8_t         element_id[8];
+       cl_timezone_t   time_zone;
+       uint32_t        sequence_number;
+       uint8_t         event_time[18];
+       uint8_t         status[4];
+       uint8_t         priority;
+       uint16_t        attr_count; /* of normal Cablelabs VSAs */
+       uint8_t         event_object;
+} cl_em_hdr_t;
+
+
+static void cablelabs_vsa_hack(VALUE_PAIR **list)
+{
+       VALUE_PAIR *ev, *vp;
+
+       ev = pairfind(&list, 1, 4491); /* Cablelabs-Event-Message */
+       if (!ev) return;
+
+       /*
+        *      FIXME: write 100's of lines of code to decode
+        *      each data structure above.
+        */
+}
+
+
+
+/*
  *     Mangle username if needed, IN PLACE.
  */
 static void rad_mangle(rlm_preprocess_t *data, REQUEST *request)
@@ -566,6 +629,14 @@ static int preprocess_authorize(void *instance, REQUEST *request)
                alvarion_vsa_hack(request->packet->vps);
        }
 
+       if (data->with_cablelabs_vsa_hack) {
+               /*
+                *      We need to run this hack because the Cablelabs
+                *      people are crazy.
+                */
+               cablelabs_vsa_hack(&request->packet->vps);
+       }
+
        /*
         *      Note that we add the Request-Src-IP-Address to the request
         *      structure BEFORE checking huntgroup access.  This allows
@@ -635,6 +706,14 @@ static int preprocess_preaccounting(void *instance, REQUEST *request)
                alvarion_vsa_hack(request->packet->vps);
        }
 
+       if (data->with_cablelabs_vsa_hack) {
+               /*
+                *      We need to run this hack because the Cablelabs
+                *      people are crazy.
+                */
+               cablelabs_vsa_hack(&request->packet->vps);
+       }
+
        /*
         *  Ensure that we log the NAS IP Address in the packet.
         */