Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 197 insertions, 0 deletions

diff --git a/source3/winbindd/winbindd_pam_chauthtok.c b/source3/winbindd/winbindd_pam_chauthtok.c
new file mode 100644
index 0000000..336654e
--- /dev/null
+++ b/source3/winbindd/winbindd_pam_chauthtok.c
@@ -0,0 +1,197 @@
+/*
+   Unix SMB/CIFS implementation.
+   async implementation of WINBINDD_PAM_CHAUTHTOK
+   Copyright (C) Volker Lendecke 2010
+
+   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 "lib/util/string_wrappers.h"
+#include "lib/global_contexts.h"
+#include "librpc/gen_ndr/ndr_winbind_c.h"
+
+static void fill_in_password_policy(struct winbindd_response *r,
+				    const struct samr_DomInfo1 *p)
+{
+	r->data.auth.policy.min_length_password =
+		p->min_password_length;
+	r->data.auth.policy.password_history =
+		p->password_history_length;
+	r->data.auth.policy.password_properties =
+		p->password_properties;
+	r->data.auth.policy.expire	=
+		nt_time_to_unix_abs((const NTTIME *)&(p->max_password_age));
+	r->data.auth.policy.min_passwordage =
+		nt_time_to_unix_abs((const NTTIME *)&(p->min_password_age));
+}
+
+struct winbindd_pam_chauthtok_state {
+	struct wbint_PamAuthChangePassword r;
+};
+
+static void winbindd_pam_chauthtok_done(struct tevent_req *subreq);
+
+struct tevent_req *winbindd_pam_chauthtok_send(
+	TALLOC_CTX *mem_ctx,
+	struct tevent_context *ev,
+	struct winbindd_cli_state *cli,
+	struct winbindd_request *request)
+{
+	struct tevent_req *req, *subreq;
+	struct winbindd_pam_chauthtok_state *state;
+	struct winbindd_domain *contact_domain;
+	fstring namespace, domain, user;
+	char *mapped_user;
+	NTSTATUS status;
+	bool ok;
+
+	req = tevent_req_create(mem_ctx, &state,
+				struct winbindd_pam_chauthtok_state);
+	if (req == NULL) {
+		return NULL;
+	}
+
+	/* Ensure null termination */
+	request->data.chauthtok.user[
+		sizeof(request->data.chauthtok.user)-1]='\0';
+
+	DEBUG(3, ("[%5lu]: pam chauthtok %s\n", (unsigned long)cli->pid,
+		  request->data.chauthtok.user));
+
+	status = normalize_name_unmap(state, request->data.chauthtok.user,
+				      &mapped_user);
+
+	if (NT_STATUS_IS_OK(status) ||
+	    NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
+		fstrcpy(request->data.chauthtok.user, mapped_user);
+	}
+
+	ok = canonicalize_username(request->data.chauthtok.user,
+				   namespace,
+				   domain,
+				   user);
+	if (!ok) {
+		DEBUG(10, ("winbindd_pam_chauthtok: canonicalize_username %s "
+			   "failed with\n", request->data.chauthtok.user));
+		tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
+		return tevent_req_post(req, ev);
+	}
+
+	contact_domain = find_domain_from_name(namespace);
+	if (contact_domain == NULL) {
+		DEBUG(3, ("Cannot change password for [%s] -> [%s]\\[%s] "
+			  "as %s is not a trusted domain\n",
+			  request->data.chauthtok.user, domain, user, domain));
+		tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
+		return tevent_req_post(req, ev);
+	}
+
+	state->r.in.client_pid = request->pid;
+	state->r.in.flags = request->flags;
+
+	state->r.in.client_name = talloc_strdup(state, request->client_name);
+	if (tevent_req_nomem(state->r.in.client_name, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	state->r.in.user = talloc_strdup(state, request->data.chauthtok.user);
+	if (tevent_req_nomem(state->r.in.user, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	state->r.in.old_password = talloc_strdup(state,
+			request->data.chauthtok.oldpass);
+	if (tevent_req_nomem(state->r.in.old_password, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	state->r.in.new_password = talloc_strdup(state,
+			request->data.chauthtok.newpass);
+	if (tevent_req_nomem(state->r.in.new_password, req)) {
+		return tevent_req_post(req, ev);
+	}
+
+	subreq = dcerpc_wbint_PamAuthChangePassword_r_send(state,
+					global_event_context(),
+					dom_child_handle(contact_domain),
+					&state->r);
+	if (tevent_req_nomem(subreq, req)) {
+		return tevent_req_post(req, ev);
+	}
+	tevent_req_set_callback(subreq, winbindd_pam_chauthtok_done, req);
+	return req;
+}
+
+static void winbindd_pam_chauthtok_done(struct tevent_req *subreq)
+{
+	struct tevent_req *req = tevent_req_callback_data(
+		subreq, struct tevent_req);
+	struct winbindd_pam_chauthtok_state *state = tevent_req_data(
+		req, struct winbindd_pam_chauthtok_state);
+	NTSTATUS status;
+
+	status = dcerpc_wbint_PamAuthChangePassword_r_recv(subreq, state);
+	TALLOC_FREE(subreq);
+	if (tevent_req_nterror(req, status)) {
+		return;
+	}
+
+	tevent_req_done(req);
+}
+
+NTSTATUS winbindd_pam_chauthtok_recv(struct tevent_req *req,
+				     struct winbindd_response *response)
+{
+	struct winbindd_pam_chauthtok_state *state = tevent_req_data(
+		req, struct winbindd_pam_chauthtok_state);
+	NTSTATUS status = NT_STATUS_OK;
+
+	if (tevent_req_is_nterror(req, &status)) {
+		set_auth_errors(response, status);
+		return status;
+	}
+
+	response->result = WINBINDD_PENDING;
+
+	set_auth_errors(response, state->r.out.result);
+	if (*state->r.out.dominfo != NULL) {
+		fill_in_password_policy(response, *state->r.out.dominfo);
+	}
+	response->data.auth.reject_reason = *state->r.out.reject_reason;
+
+	if (state->r.in.flags & WBFLAG_PAM_CACHED_LOGIN) {
+
+		/* Update the single sign-on memory creds. */
+		status = winbindd_replace_memory_creds(
+			state->r.in.user, state->r.in.new_password);
+
+		DEBUG(10, ("winbindd_replace_memory_creds returned %s\n",
+			   nt_errstr(status)));
+
+		/*
+		 * When we login from gdm or xdm and password expires,
+		 * we change password, but there are no memory
+		 * crendentials So, winbindd_replace_memory_creds()
+		 * returns NT_STATUS_OBJECT_NAME_NOT_FOUND. This is
+		 * not a failure.  --- BoYang
+		 */
+		if (NT_STATUS_EQUAL(status, NT_STATUS_OBJECT_NAME_NOT_FOUND)) {
+			status = NT_STATUS_OK;
+		}
+	}
+
+	return NT_STATUS(response->data.auth.nt_status);
+}