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https://github.com/samba-team/samba.git
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d39664fc66
Signed-off-by: Mourik Jan C Heupink <heupink@merit.unu.edu> Reviewed-by: Garming Sam <garming@catalyst.net.nz> Reviewed-by: Andrew Bartlett <abartlet@samba.org>
128 lines
3.4 KiB
C
128 lines
3.4 KiB
C
/*
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Unix SMB/CIFS implementation.
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SASL/EXTERNAL authentication.
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Copyright (C) Howard Chu <hyc@symas.com> 2013
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include <tevent.h>
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#include "lib/util/tevent_ntstatus.h"
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#include "auth/credentials/credentials.h"
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#include "auth/gensec/gensec.h"
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#include "auth/gensec/gensec_internal.h"
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#include "auth/gensec/gensec_proto.h"
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#include "auth/gensec/gensec_toplevel_proto.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_AUTH
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/* SASL/EXTERNAL is essentially a no-op; it is only usable when the transport
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* layer is already mutually authenticated.
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*/
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NTSTATUS gensec_external_init(TALLOC_CTX *ctx);
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static NTSTATUS gensec_external_start(struct gensec_security *gensec_security)
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{
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if (gensec_security->want_features & GENSEC_FEATURE_SIGN)
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return NT_STATUS_INVALID_PARAMETER;
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if (gensec_security->want_features & GENSEC_FEATURE_SEAL)
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return NT_STATUS_INVALID_PARAMETER;
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return NT_STATUS_OK;
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}
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struct gensec_external_update_state {
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DATA_BLOB out;
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};
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static struct tevent_req *gensec_external_update_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct gensec_security *gensec_security,
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const DATA_BLOB in)
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{
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struct tevent_req *req;
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struct gensec_external_update_state *state = NULL;
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req = tevent_req_create(mem_ctx, &state,
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struct gensec_external_update_state);
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if (req == NULL) {
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return NULL;
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}
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state->out = data_blob_talloc(state, "", 0);
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if (tevent_req_nomem(state->out.data, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_done(req);
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return tevent_req_post(req, ev);
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}
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static NTSTATUS gensec_external_update_recv(struct tevent_req *req,
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TALLOC_CTX *out_mem_ctx,
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DATA_BLOB *out)
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{
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struct gensec_external_update_state *state =
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tevent_req_data(req,
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struct gensec_external_update_state);
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NTSTATUS status;
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*out = data_blob_null;
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if (tevent_req_is_nterror(req, &status)) {
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tevent_req_received(req);
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return status;
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}
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*out = state->out;
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tevent_req_received(req);
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return NT_STATUS_OK;
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}
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/* We have no features */
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static bool gensec_external_have_feature(struct gensec_security *gensec_security,
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uint32_t feature)
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{
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return false;
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}
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static const struct gensec_security_ops gensec_external_ops = {
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.name = "sasl-EXTERNAL",
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.sasl_name = "EXTERNAL",
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.client_start = gensec_external_start,
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.update_send = gensec_external_update_send,
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.update_recv = gensec_external_update_recv,
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.have_feature = gensec_external_have_feature,
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.enabled = true,
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.priority = GENSEC_EXTERNAL
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};
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NTSTATUS gensec_external_init(TALLOC_CTX *ctx)
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{
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NTSTATUS ret;
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ret = gensec_register(ctx, &gensec_external_ops);
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if (!NT_STATUS_IS_OK(ret)) {
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DEBUG(0,("Failed to register '%s' gensec backend!\n",
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gensec_external_ops.name));
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}
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return ret;
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}
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