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/* Copyright (C) 2011 the GSS-PROXY contributors, see COPYING for license */
#include "gp_rpc_process.h"
int gp_accept_sec_context(struct gp_call_ctx *gpcall,
union gp_rpc_arg *arg,
union gp_rpc_res *res)
{
struct gssx_arg_accept_sec_context *asca;
struct gssx_res_accept_sec_context *ascr;
uint32_t ret_maj;
uint32_t ret_min;
gss_ctx_id_t ctx = GSS_C_NO_CONTEXT;
gss_cred_id_t ach = GSS_C_NO_CREDENTIAL;
gss_buffer_desc ibuf;
struct gss_channel_bindings_struct cbs;
gss_channel_bindings_t pcbs;
gss_name_t src_name = GSS_C_NO_NAME;
gss_OID oid = GSS_C_NO_OID;
gss_buffer_desc obuf = GSS_C_EMPTY_BUFFER;
uint32_t ret_flags;
gss_cred_id_t dch = GSS_C_NO_CREDENTIAL;
gss_cred_id_t *pdch = NULL;
int exp_ctx_type;
int exp_creds_type;
uint32_t acpt_maj;
uint32_t acpt_min;
int ret;
asca = &arg->accept_sec_context;
ascr = &res->accept_sec_context;
GPRPCDEBUG(gssx_arg_accept_sec_context, asca);
exp_ctx_type = gp_get_exported_context_type(&asca->call_ctx);
if (exp_ctx_type == -1) {
ret_maj = GSS_S_FAILURE;
ret_min = EINVAL;
goto done;
}
exp_creds_type = gp_get_export_creds_type(&asca->call_ctx);
if (exp_creds_type == -1) {
ret_maj = GSS_S_FAILURE;
ret_min = EINVAL;
goto done;
}
if (asca->cred_handle) {
ret_maj = gp_import_gssx_cred(&ret_min, gpcall,
asca->cred_handle, &ach);
if (ret_maj) {
goto done;
}
}
if (ach == GSS_C_NO_CREDENTIAL) {
ret_maj = gp_add_krb5_creds(&ret_min, gpcall,
NULL, NULL,
GSS_C_ACCEPT,
0, 0,
&ach,
NULL, NULL, NULL);
if (ret_maj) {
goto done;
}
}
gp_conv_gssx_to_buffer(&asca->input_token, &ibuf);
if (asca->input_cb) {
pcbs = &cbs;
gp_conv_gssx_to_cb(asca->input_cb, pcbs);
} else {
pcbs = GSS_C_NO_CHANNEL_BINDINGS;
}
if (asca->ret_deleg_cred) {
pdch = &dch;
}
ret_maj = gss_accept_sec_context(&ret_min,
&ctx,
ach,
&ibuf,
pcbs,
&src_name,
&oid,
&obuf,
&ret_flags,
NULL,
pdch);
if (ret_maj != GSS_S_COMPLETE &&
ret_maj != GSS_S_CONTINUE_NEEDED) {
goto done;
} else {
acpt_maj = ret_maj;
acpt_min = ret_min;
}
if (acpt_maj == GSS_S_CONTINUE_NEEDED) {
exp_ctx_type = gp_get_continue_needed_type();
}
ascr->context_handle = calloc(1, sizeof(gssx_ctx));
if (!ascr->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, oid,
&ctx, ascr->context_handle);
if (ret_maj) {
goto done;
}
ascr->output_token = calloc(1, sizeof(gssx_buffer));
if (!ascr->output_token) {
ret_maj = GSS_S_FAILURE;
ret_min = ENOMEM;
goto done;
}
ret = gp_conv_buffer_to_gssx(&obuf, ascr->output_token);
if (ret) {
ret_maj = GSS_S_FAILURE;
ret_min = ret;
goto done;
}
if ((ret_flags & GSS_C_DELEG_FLAG) && asca->ret_deleg_cred && dch) {
ascr->delegated_cred_handle = calloc(1, sizeof(gssx_cred));
if (!ascr->delegated_cred_handle) {
ret_maj = GSS_S_FAILURE;
ret_min = ENOMEM;
goto done;
}
ret_maj = gp_export_gssx_cred(&ret_min, gpcall,
&dch, ascr->delegated_cred_handle);
if (ret_maj) {
goto done;
}
}
ret_maj = gp_export_creds_to_gssx_options(&ret_min,
exp_creds_type,
src_name, oid,
&ascr->options.options_len,
&ascr->options.options_val);
done:
if (ret_maj == GSS_S_COMPLETE) {
ret_maj = acpt_maj;
ret_min = acpt_min;
}
ret = gp_conv_status_to_gssx(&asca->call_ctx,
ret_maj, ret_min, oid,
&ascr->status);
GPRPCDEBUG(gssx_res_accept_sec_context, ascr);
gss_release_name(&ret_min, &src_name);
gss_release_buffer(&ret_min, &obuf);
gss_release_cred(&ret_min, &dch);
gss_delete_sec_context(&ret_min, &ctx, GSS_C_NO_BUFFER);
return ret;
}
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