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/* Copyright (C) 2011 the GSS-PROXY contributors, see COPYING for license */
#include "gssapi_gpm.h"
#include "src/gp_conv.h"
OM_uint32 gpm_init_sec_context(OM_uint32 *minor_status,
gssx_cred *cred_handle,
gssx_ctx **context_handle,
gssx_name *target_name,
gss_OID mech_type,
OM_uint32 req_flags,
OM_uint32 time_req,
gss_channel_bindings_t input_cb,
gss_buffer_t input_token,
gss_OID *actual_mech_type,
gss_buffer_t output_token,
OM_uint32 *ret_flags,
OM_uint32 *time_rec)
{
union gp_rpc_arg uarg;
union gp_rpc_res ures;
gssx_arg_init_sec_context *arg = &uarg.init_sec_context;
gssx_res_init_sec_context *res = &ures.init_sec_context;
gssx_ctx *ctx = NULL;
gss_OID_desc *mech = NULL;
gss_buffer_t outbuf = NULL;
uint32_t ret_maj = GSS_S_COMPLETE;
uint32_t ret_min = 0;
int ret;
memset(&uarg, 0, sizeof(union gp_rpc_arg));
memset(&ures, 0, sizeof(union gp_rpc_res));
/* prepare proxy request */
if (cred_handle != NULL) {
arg->cred_handle = cred_handle;
}
if (*context_handle) {
arg->context_handle = *context_handle;
}
arg->target_name = target_name;
ret = gp_conv_oid_to_gssx(mech_type, &arg->mech_type);
if (ret) {
goto done;
}
arg->req_flags = req_flags;
arg->time_req = time_req;
if (input_cb) {
ret = gp_conv_cb_to_gssx_alloc(input_cb, &arg->input_cb);
if (ret) {
goto done;
}
}
if (input_token != GSS_C_NO_BUFFER) {
ret = gp_conv_buffer_to_gssx_alloc(input_token, &arg->input_token);
if (ret) {
goto done;
}
}
/* execute proxy request */
ret = gpm_make_call(GSSX_INIT_SEC_CONTEXT, &uarg, &ures);
if (ret) {
gpm_save_internal_status(ret, gp_strerror(ret));
goto done;
}
/* return values */
if (actual_mech_type) {
if (res->status.mech.octet_string_len) {
ret = gp_conv_gssx_to_oid_alloc(&res->status.mech, &mech);
if (ret) {
goto done;
}
}
}
if (res->context_handle) {
ctx = res->context_handle;
/* we are stealing the delegated creds on success, so we do not want
* it to be freed by xdr_free */
res->context_handle = NULL;
}
if (res->output_token) {
ret = gp_conv_gssx_to_buffer_alloc(res->output_token, &outbuf);
if (ret) {
gpm_save_internal_status(ret, gp_strerror(ret));
goto done;
}
}
ret_maj = res->status.major_status;
ret_min = res->status.minor_status;
gpm_save_status(&res->status);
done:
if (ret != 0) {
ret_min = ret;
ret_maj = GSS_S_FAILURE;
}
/* we are putting our copy of these structures in here,
* and do not want it to be freed by xdr_free */
arg->context_handle = NULL;
arg->cred_handle = NULL;
arg->target_name = NULL;
gpm_free_xdrs(GSSX_INIT_SEC_CONTEXT, &uarg, &ures);
if (ret_maj == GSS_S_COMPLETE || ret_maj == GSS_S_CONTINUE_NEEDED) {
if (actual_mech_type) {
*actual_mech_type = mech;
}
if (outbuf) {
*output_token = *outbuf;
free(outbuf);
}
if (ret_flags) {
*ret_flags = ctx->ctx_flags;
}
if (time_rec) {
*time_rec = ctx->lifetime;
}
} else {
if (ctx) {
xdr_free((xdrproc_t)xdr_gssx_ctx, (char *)ctx);
free(ctx);
ctx = NULL;
}
if (mech) {
free(mech->elements);
free(mech);
}
if (outbuf) {
free(outbuf->value);
free(outbuf);
}
}
/* always replace old ctx handle and set new */
if (*context_handle) {
xdr_free((xdrproc_t)xdr_gssx_ctx, (char *)*context_handle);
free(*context_handle);
}
*context_handle = ctx;
*minor_status = ret_min;
return ret_maj;
}
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