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/* Copyright (C) 2011,2012 the GSS-PROXY contributors, see COPYING for license */
#include "gp_rpc_process.h"
#include <gssapi/gssapi.h>
int gp_unwrap(struct gp_call_ctx *gpcall,
union gp_rpc_arg *arg,
union gp_rpc_res *res)
{
gss_buffer_desc input_message_buffer = GSS_C_EMPTY_BUFFER;
gss_buffer_desc output_message_buffer = GSS_C_EMPTY_BUFFER;
gss_ctx_id_t context_handle = GSS_C_NO_CONTEXT;
struct gssx_arg_unwrap *uwa;
struct gssx_res_unwrap *uwr;
uint32_t ret_maj;
uint32_t ret_min;
int ret;
int exp_ctx_type;
int conf_state = 0;
gss_qop_t qop_state = 0;
uwa = &arg->unwrap;
uwr = &res->unwrap;
GPRPCDEBUG(gssx_arg_unwrap, uwa);
exp_ctx_type = gp_get_exported_context_type(&uwa->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,
&uwa->context_handle,
&context_handle);
if (ret_maj) {
goto done;
}
/* apparently it is ok to send an empty message, in that case we dont need
* to bother to do any conversion - gd */
if ((uwa->token_buffer.token_buffer_len > 0) &&
(uwa->token_buffer.token_buffer_val != NULL)) {
gp_conv_gssx_to_buffer(&uwa->token_buffer.token_buffer_val[0],
&input_message_buffer);
}
ret_maj = gss_unwrap(&ret_min,
context_handle,
&input_message_buffer,
&output_message_buffer,
&conf_state,
&qop_state);
if (ret_maj) {
goto done;
}
uwr->context_handle = calloc(1, sizeof(gssx_ctx));
if (!uwr->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,
uwr->context_handle);
if (ret_maj) {
goto done;
}
uwr->qop_state = malloc(sizeof(gssx_qop));
if (!uwr->qop_state) {
ret_maj = GSS_S_FAILURE;
ret_min = ENOMEM;
goto done;
}
*uwr->qop_state = uwa->qop_state;
uwr->conf_state = malloc(sizeof(bool_t));
if (!uwr->conf_state) {
ret_maj = GSS_S_FAILURE;
ret_min = ENOMEM;
goto done;
}
*uwr->conf_state = conf_state;
uwr->message_buffer.message_buffer_val = calloc(1, sizeof(gssx_buffer));
if (!uwr->message_buffer.message_buffer_val) {
ret_maj = GSS_S_FAILURE;
ret_min = ENOMEM;
goto done;
}
uwr->message_buffer.message_buffer_len = 1;
ret = gp_conv_buffer_to_gssx(&output_message_buffer,
&uwr->message_buffer.message_buffer_val[0]);
if (ret ) {
ret_maj = GSS_S_FAILURE;
ret_min = ret;
goto done;
}
ret_maj = GSS_S_COMPLETE;
ret_min = 0;
done:
ret = gp_conv_status_to_gssx(&uwa->call_ctx,
ret_maj, ret_min,
GSS_C_NO_OID,
&uwr->status);
GPRPCDEBUG(gssx_res_unwrap, uwr);
gss_release_buffer(&ret_min, &output_message_buffer);
return ret;
}
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