s3:winbind: Add async wb_gettoken

1 files changed, 218 insertions, 0 deletions

diff --git a/source3/winbindd/wb_gettoken.c b/source3/winbindd/wb_gettoken.c
new file mode 100644
index 0000000000..26189e5a97
--- /dev/null
+++ b/source3/winbindd/wb_gettoken.c
@@ -0,0 +1,218 @@
+/*
+   Unix SMB/CIFS implementation.
+   async gettoken
+   Copyright (C) Volker Lendecke 2009
+
+   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 "winbindd.h"
+#include "librpc/gen_ndr/cli_wbint.h"
+
+struct wb_gettoken_state {
+	struct tevent_context *ev;
+	struct dom_sid usersid;
+	int num_sids;
+	struct dom_sid *sids;
+};
+
+static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
+				int *pnum_sids, struct dom_sid **psids,
+				const struct dom_sid *domain_sid,
+				int num_rids, uint32_t *rids);
+
+static void wb_gettoken_gotgroups(struct tevent_req *subreq);
+static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq);
+static void wb_gettoken_gotbuiltins(struct tevent_req *subreq);
+
+struct tevent_req *wb_gettoken_send(TALLOC_CTX *mem_ctx,
+				    struct tevent_context *ev,
+				    const struct dom_sid *sid)
+{
+	struct tevent_req *req, *subreq;
+	struct wb_gettoken_state *state;
+	struct winbindd_domain *domain;
+
+	req = tevent_req_create(mem_ctx, &state, struct wb_gettoken_state);
+	if (req == NULL) {
+		return NULL;
+	}
+	sid_copy(&state->usersid, sid);
+	state->ev = ev;
+
+	domain = find_domain_from_sid_noinit(sid);
+	if (domain == NULL) {
+		DEBUG(5, ("Could not find domain from SID %s\n",
+			  sid_string_dbg(sid)));
+		tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = wb_lookupusergroups_send(state, ev, domain, &state->usersid);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, wb_gettoken_gotgroups, req);
+	return req;
+}
+
+static void wb_gettoken_gotgroups(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_gettoken_state *state = tevent_req_data(
+		req, struct wb_gettoken_state);
+        struct dom_sid *sids;
+	struct winbindd_domain *domain;
+	NTSTATUS status;
+
+	status = wb_lookupusergroups_recv(subreq, state, &state->num_sids,
+					  &state->sids);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+
+	sids = talloc_realloc(state, state->sids, struct dom_sid,
+			      state->num_sids + 1);
+	if (tevent_req_nomem(sids, req)) {
+		return;
+	}
+	memmove(&sids[1], &sids[0], state->num_sids * sizeof(sids[0]));
+	sid_copy(&sids[0], &state->usersid);
+	state->num_sids += 1;
+	state->sids = sids;
+
+	/*
+	 * Expand our domain's aliases
+	 */
+	domain = find_our_domain();
+	if (domain == NULL) {
+		tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		return;
+	}
+
+	subreq = wb_lookupuseraliases_send(state, state->ev, domain,
+					   state->num_sids, state->sids);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wb_gettoken_gotlocalgroups, req);
+}
+
+static void wb_gettoken_gotlocalgroups(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_gettoken_state *state = tevent_req_data(
+		req, struct wb_gettoken_state);
+	uint32_t num_rids;
+	uint32_t *rids;
+	struct winbindd_domain *domain;
+	NTSTATUS status;
+
+	status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	domain = find_our_domain();
+	if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
+				 &domain->sid, num_rids, rids)) {
+		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+		return;
+	}
+	TALLOC_FREE(rids);
+
+	/*
+	 * Now expand the builtin groups
+	 */
+
+	domain = find_builtin_domain();
+	if (domain == NULL) {
+		tevent_req_nterror(req, NT_STATUS_INTERNAL_ERROR);
+		return;
+	}
+
+	subreq = wb_lookupuseraliases_send(state, state->ev, domain,
+					   state->num_sids, state->sids);
+	if (tevent_req_nomem(subreq, req)) {
+		return;
+	}
+	tevent_req_set_callback(subreq, wb_gettoken_gotbuiltins, req);
+}
+
+static void wb_gettoken_gotbuiltins(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct wb_gettoken_state *state = tevent_req_data(
+		req, struct wb_gettoken_state);
+	uint32_t num_rids;
+        uint32_t *rids;
+	NTSTATUS status;
+
+	status = wb_lookupuseraliases_recv(subreq, state, &num_rids, &rids);
+	TALLOC_FREE(subreq);
+	if (!NT_STATUS_IS_OK(status)) {
+		tevent_req_nterror(req, status);
+		return;
+	}
+	if (!wb_add_rids_to_sids(state, &state->num_sids, &state->sids,
+				 &global_sid_Builtin, num_rids, rids)) {
+		tevent_req_nterror(req, NT_STATUS_NO_MEMORY);
+		return;
+	}
+	tevent_req_done(req);
+}
+
+NTSTATUS wb_gettoken_recv(struct tevent_req *req, TALLOC_CTX *mem_ctx,
+			  int *num_sids, struct dom_sid **sids)
+{
+	struct wb_gettoken_state *state = tevent_req_data(
+		req, struct wb_gettoken_state);
+	NTSTATUS status;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		return status;
+	}
+	*num_sids = state->num_sids;
+	*sids = talloc_move(mem_ctx, &state->sids);
+	return NT_STATUS_OK;
+}
+
+static bool wb_add_rids_to_sids(TALLOC_CTX *mem_ctx,
+				int *pnum_sids, struct dom_sid **psids,
+				const struct dom_sid *domain_sid,
+				int num_rids, uint32_t *rids)
+{
+	struct dom_sid *sids;
+	int i;
+
+	sids = talloc_realloc(mem_ctx, *psids, struct dom_sid,
+			      *pnum_sids + num_rids);
+	if (sids == NULL) {
+		return false;
+	}
+	for (i=0; i<num_rids; i++) {
+		sid_compose(&sids[i+*pnum_sids], domain_sid, rids[i]);
+	}
+
+	*pnum_sids += num_rids;
+	*psids = sids;
+	return true;
+}