/* Copyright (C) 2011,2012 the GSS-PROXY contributors, see COPYING for license */

#include "gp_rpc_process.h"

#include <gssapi/gssapi.h>

int gp_verify_mic(struct gp_call_ctx *gpcall UNUSED,

                  union gp_rpc_arg *arg,

                  union gp_rpc_res *res)

{

    gss_ctx_id_t context_handle = GSS_C_NO_CONTEXT;

    struct gssx_arg_verify_mic *vma;

    struct gssx_res_verify_mic *vmr;

    gss_buffer_desc message_buffer;

    gss_buffer_desc token_buffer;

    gss_qop_t qop_state;

    int exp_ctx_type;

    uint32_t ret_maj;

    uint32_t ret_min;

    int ret;

    vma = &arg->verify_mic;

    vmr = &res->verify_mic;

    GPRPCDEBUG(gssx_arg_verify_mic, vma);

    exp_ctx_type = gp_get_exported_context_type(&vma->call_ctx);

    if (exp_ctx_type == -1) {

        ret_maj = GSS_S_FAILURE;

        ret_min = EINVAL;

        goto done;

    }

    ret_maj = gp_import_gssx_to_ctx_id(&ret_min, 0,

                                       &vma->context_handle,

                                       &context_handle);

    if (ret_maj) {

        goto done;

    }

    gp_conv_gssx_to_buffer(&vma->message_buffer, &message_buffer);

    gp_conv_gssx_to_buffer(&vma->token_buffer, &token_buffer);

    ret_maj = gss_verify_mic(&ret_min, context_handle,

                             &message_buffer, &token_buffer,

                             &qop_state);

    if (ret_maj) {

        goto done;

    }

    vmr->context_handle = calloc(1, sizeof(gssx_ctx));

    if (!vmr->context_handle) {

        ret_maj = GSS_S_FAILURE;

        ret_min = ENOMEM;

        goto done;

    }

    ret_maj = gp_export_ctx_id_to_gssx(&ret_min, exp_ctx_type, GSS_C_NO_OID,

                                       &context_handle,

                                       vmr->context_handle);

    if (ret_maj) {

        goto done;

    }

    vmr->qop_state = calloc(1, sizeof(gssx_qop));

    if (!vmr->qop_state) {

        ret_maj = GSS_S_FAILURE;

        ret_min = ENOMEM;

        goto done;

    }

    *vmr->qop_state = qop_state;

    ret_maj = GSS_S_COMPLETE;

    ret_min = 0;

done:

    ret = gp_conv_status_to_gssx(ret_maj, ret_min,

                                 GSS_C_NO_OID,

                                 &vmr->status);

    GPRPCDEBUG(gssx_res_verify_mic, vmr);

    return ret;

}