/*******************************************************************************
    OpenAirInterface
    Copyright(c) 1999 - 2014 Eurecom

    OpenAirInterface is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.


    OpenAirInterface is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with OpenAirInterface.The full GNU General Public License is
   included in this distribution in the file called "COPYING". If not,
   see <http://www.gnu.org/licenses/>.

  Contact Information
  OpenAirInterface Admin: openair_admin@eurecom.fr
  OpenAirInterface Tech : openair_tech@eurecom.fr
  OpenAirInterface Dev  : openair4g-devel@eurecom.fr

  Address      : Eurecom, Compus SophiaTech 450, route des chappes, 06451 Biot, France.

 *******************************************************************************/
/*! \file s11_causes.c
* \brief
* \author Sebastien ROUX, Lionel Gauthier
* \company Eurecom
* \email: lionel.gauthier@eurecom.fr
*/
#define SGW_LITE
#define S11_CAUSES_C

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>

#include "s11_causes.h"
#include "common_types.h"
#include "sgw_lite_ie_defs.h"

static const SGWCauseMapping_t causes[] = {
    { LOCAL_DETACH,                "Local detach",                              0, 0, 0, 0 },
    { COMPLETE_DETACH,             "Complete detach",                           0, 0, 0, 0 },
    { RAT_CHANGE_3GPP_TO_NON_3GPP, "From 3GPP to non 3GPP RAT change",          0, 0, 0, 0 },
    { ISR_DEACTIVATION,            "ISR deactivation",                          0, 0, 0, 0 },
    { ERROR_IND_FROM_RNC_ENB_SGSN, "Error ind received from RNC/eNB/SGSN",      0, 0, 0, 0 },
    { IMSI_DETACH_ONLY,            "IMSI detach only",                          0, 0, 0, 0 },
    { REQUEST_ACCEPTED,            "Request accepted",                          1, 1, 1, 1 },
    { REQUEST_ACCEPTED_PARTIALLY,  "Request accepted partially",                1, 1, 1, 0 },
    { NEW_PDN_TYPE_NW_PREF,        "New PDN type network preference",           1, 0, 0, 0 },
    { NEW_PDN_TYPE_SAB_ONLY,       "New PDN type single address bearer only",   1, 0, 0, 0 },
    { CONTEXT_NOT_FOUND,           "Context not found",                         0, 1, 1, 1 },
    { INVALID_MESSAGE_FORMAT,      "Invalid message format",                    1, 1, 1, 1 },
    { INVALID_LENGTH,              "Invalid length",                            1, 1, 1, 0 },
    { SERVICE_NOT_SUPPORTED,       "Service not supported",                     0, 0, 1, 0 },
    { SYSTEM_FAILURE,              "System failure",                            1, 1, 1, 0 },
    { NO_RESOURCES_AVAILABLE,      "No resources available",                    1, 0, 0, 0 },
    { MISSING_OR_UNKNOWN_APN,      "Missing or unknown APN",                    1, 0, 0, 0 },
    { GRE_KEY_NOT_FOUND,           "GRE KEY not found",                         1, 0, 0, 0 },
    { DENIED_IN_RAT,               "Denied in RAT",                             1, 1, 0, 0 },
    { UE_NOT_RESPONDING,           "UE not responding",                         0, 1, 0, 0 },
    { SERVICE_DENIED,              "Service Denied",                            0, 0, 0, 0 },
    { UNABLE_TO_PAGE_UE,           "Unable to page UE",                         0, 1, 0, 0 },
    { NO_MEMORY_AVAILABLE,         "No memory available",                       1, 1, 1, 0 },
    { REQUEST_REJECTED,            "Request rejected",                          1, 1, 1, 0 },
    { INVALID_PEER,                "Invalid peer",                              0, 0, 0, 1 },
    { TEMP_REJECT_HO_IN_PROGRESS,  "Temporarily rejected due to HO in progress",0, 0, 0, 0 },
    { M_PDN_APN_NOT_ALLOWED,       "Multiple PDN for a given APN not allowed",  1, 0, 0, 0 },
    { 0,                           NULL,                                        0, 0, 0, 0 },
};

static int compare_cause_id(const void *m1, const void *m2)
{
    struct SGWCauseMapping_e *scm1 = (struct SGWCauseMapping_e*)m1;
    struct SGWCauseMapping_e *scm2 = (struct SGWCauseMapping_e*)m2;

    return (scm1->value - scm2->value);
}

char *sgw_cause_2_string(uint8_t cause_value)
{
    SGWCauseMapping_t *res, key;
    key.value = cause_value;
    res = bsearch(&key, causes, sizeof(causes), sizeof(SGWCauseMapping_t), compare_cause_id);
    if (res == NULL) {
        return "Unknown cause";
    } else {
        return res->name;
    }
}
