1 files changed, 109 insertions, 0 deletions
diff --git a/source4/winbind/wb_sid2uid.c b/source4/winbind/wb_sid2uid.c
new file mode 100644
index 0000000000..b65e41978c
--- /dev/null
+++ b/source4/winbind/wb_sid2uid.c
@@ -0,0 +1,109 @@
+/*
+   Unix SMB/CIFS implementation.
+
+   Map a SID to a uid
+
+   Copyright (C) 2007-2008 Kai Blin
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "includes.h"
+#include "libcli/composite/composite.h"
+#include "winbind/wb_server.h"
+#include "smbd/service_task.h"
+#include "winbind/wb_helper.h"
+#include "libcli/security/proto.h"
+#include "winbind/idmap.h"
+
+struct sid2uid_state {
+	struct composite_context *ctx;
+	struct wbsrv_service *service;
+	uid_t uid;
+};
+
+static void sid2uid_recv_uid(struct composite_context *ctx);
+
+struct composite_context *wb_sid2uid_send(TALLOC_CTX *mem_ctx,
+		struct wbsrv_service *service, const struct dom_sid *sid)
+{
+	struct composite_context *result, *ctx;
+	struct sid2uid_state *state;
+	struct id_mapping *ids;
+
+	DEBUG(5, ("wb_sid2uid_send called\n"));
+
+	result = composite_create(mem_ctx, service->task->event_ctx);
+	if (!result) return NULL;
+
+	state = talloc(result, struct sid2uid_state);
+	if (composite_nomem(state, result)) return result;
+
+	state->ctx = result;
+	result->private_data = state;
+	state->service = service;
+
+	ids = talloc(result, struct id_mapping);
+	if (composite_nomem(ids, result)) return result;
+
+	ids->sid = dom_sid_dup(result, sid);
+	if (composite_nomem(ids->sid, result)) return result;
+
+	ctx = wb_sids2xids_send(result, service, 1, ids);
+	if (composite_nomem(ctx, result)) return result;
+
+	composite_continue(result, ctx, sid2uid_recv_uid, state);
+	return result;
+}
+
+static void sid2uid_recv_uid(struct composite_context *ctx)
+{
+	struct sid2uid_state *state = talloc_get_type(ctx->async.private_data,
+						      struct sid2uid_state);
+
+	struct id_mapping *ids = NULL;
+
+	state->ctx->status = wb_sids2xids_recv(ctx, &ids);
+	if (!composite_is_ok(state->ctx)) return;
+
+	if (!NT_STATUS_IS_OK(ids->status)) {
+		composite_error(state->ctx, ids->status);
+		return;
+	}
+
+	if (ids->unixid->type == ID_TYPE_BOTH ||
+	    ids->unixid->type == ID_TYPE_UID) {
+		state->uid = ids->unixid->id;
+		composite_done(state->ctx);
+	} else {
+		composite_error(state->ctx, NT_STATUS_INVALID_SID);
+	}
+}
+
+NTSTATUS wb_sid2uid_recv(struct composite_context *ctx, uid_t *uid)
+{
+	NTSTATUS status = composite_wait(ctx);
+
+	DEBUG(5, ("wb_sid2uid_recv called\n"));
+
+	if (NT_STATUS_IS_OK(status)) {
+		struct sid2uid_state *state =
+			talloc_get_type(ctx->private_data,
+				struct sid2uid_state);
+		*uid = state->uid;
+	}
+	talloc_free(ctx);
+	return status;
+}
+