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4f63a3b731
Test scenario: $ bin/wbinfo --pam-logon=ADDOMAIN/alice%Secret007 Signed-off-by: Pavel Filipenský <pfilipen@redhat.com> Reviewed-by: Andreas Schneider <asn@samba.org>
287 lines
7.6 KiB
C
287 lines
7.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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async implementation of WINBINDD_PAM_AUTH
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Copyright (C) Volker Lendecke 2010
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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 "winbindd.h"
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#include "libcli/security/dom_sid.h"
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#include "lib/util/string_wrappers.h"
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#include "lib/global_contexts.h"
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#include "librpc/gen_ndr/ndr_winbind_c.h"
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static NTSTATUS fake_password_policy(struct winbindd_response *r,
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uint16_t validation_level,
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union netr_Validation *validation)
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{
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const struct netr_SamBaseInfo *bi = NULL;
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NTTIME min_password_age;
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NTTIME max_password_age;
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switch (validation_level) {
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case 3:
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bi = &validation->sam3->base;
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break;
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case 6:
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bi = &validation->sam6->base;
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break;
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default:
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return NT_STATUS_INTERNAL_ERROR;
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}
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if (bi->allow_password_change > bi->last_password_change) {
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min_password_age = bi->allow_password_change -
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bi->last_password_change;
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} else {
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min_password_age = 0;
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}
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if (bi->force_password_change > bi->last_password_change) {
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max_password_age = bi->force_password_change -
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bi->last_password_change;
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} else {
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max_password_age = 0;
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}
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r->data.auth.policy.min_length_password = 0;
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r->data.auth.policy.password_history = 0;
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r->data.auth.policy.password_properties = 0;
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r->data.auth.policy.expire =
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nt_time_to_unix_abs(&max_password_age);
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r->data.auth.policy.min_passwordage =
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nt_time_to_unix_abs(&min_password_age);
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return NT_STATUS_OK;
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}
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struct winbindd_pam_auth_state {
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struct wbint_PamAuth *r;
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fstring name_namespace;
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fstring name_domain;
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fstring name_user;
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};
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static void winbindd_pam_auth_done(struct tevent_req *subreq);
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struct tevent_req *winbindd_pam_auth_send(TALLOC_CTX *mem_ctx,
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struct tevent_context *ev,
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struct winbindd_cli_state *cli,
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struct winbindd_request *request)
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{
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struct tevent_req *req, *subreq;
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struct winbindd_pam_auth_state *state;
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struct winbindd_domain *domain;
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char *mapped = NULL;
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NTSTATUS status;
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bool ok;
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req = tevent_req_create(mem_ctx, &state,
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struct winbindd_pam_auth_state);
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if (req == NULL) {
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return NULL;
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}
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D_NOTICE("[%s (%u)] Winbind external command PAM_AUTH start.\n"
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"Authenticating user '%s'.\n",
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cli->client_name,
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(unsigned int)cli->pid,
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request->data.auth.user);
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if (!check_request_flags(request->flags)) {
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tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER_MIX);
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return tevent_req_post(req, ev);
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}
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/* Parse domain and username */
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status = normalize_name_unmap(state, request->data.auth.user, &mapped);
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/* If the name normalization changed something, copy it over the given
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name */
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if (NT_STATUS_IS_OK(status)
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|| NT_STATUS_EQUAL(status, NT_STATUS_FILE_RENAMED)) {
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fstrcpy(request->data.auth.user, mapped);
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}
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ok = canonicalize_username(request->data.auth.user,
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state->name_namespace,
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state->name_domain,
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state->name_user);
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if (!ok) {
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tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
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return tevent_req_post(req, ev);
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}
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domain = find_auth_domain(request->flags, state->name_namespace);
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if (domain == NULL) {
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tevent_req_nterror(req, NT_STATUS_NO_SUCH_USER);
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return tevent_req_post(req, ev);
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}
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state->r = talloc_zero(state, struct wbint_PamAuth);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.client_name = talloc_strdup(
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state->r, request->client_name);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.client_pid = request->pid;
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state->r->in.flags = request->flags;
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state->r->in.info = talloc_zero(state->r, struct wbint_AuthUserInfo);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.info->krb5_cc_type = talloc_strdup(
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state->r, request->data.auth.krb5_cc_type);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.info->password = talloc_strdup(
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state->r, request->data.auth.pass);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.info->username = talloc_strdup(
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state->r, request->data.auth.user);
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if (tevent_req_nomem(state->r, req)) {
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return tevent_req_post(req, ev);
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}
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state->r->in.info->uid = request->data.auth.uid;
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status = extra_data_to_sid_array(
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request->data.auth.require_membership_of_sid,
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state->r,
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&state->r->in.require_membership_of_sid);
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if (tevent_req_nterror(req, status)) {
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return tevent_req_post(req, ev);
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}
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subreq = dcerpc_wbint_PamAuth_r_send(state,
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global_event_context(),
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dom_child_handle(domain),
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state->r);
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if (tevent_req_nomem(subreq, req)) {
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return tevent_req_post(req, ev);
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}
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tevent_req_set_callback(subreq, winbindd_pam_auth_done, req);
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return req;
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}
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static void winbindd_pam_auth_done(struct tevent_req *subreq)
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{
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struct tevent_req *req = tevent_req_callback_data(
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subreq, struct tevent_req);
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struct winbindd_pam_auth_state *state = tevent_req_data(
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req, struct winbindd_pam_auth_state);
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NTSTATUS status;
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status = dcerpc_wbint_PamAuth_r_recv(subreq, state);
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TALLOC_FREE(subreq);
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if (tevent_req_nterror(req, status)) {
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return;
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}
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if (tevent_req_nterror(req, state->r->out.result)) {
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return;
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}
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tevent_req_done(req);
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}
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NTSTATUS winbindd_pam_auth_recv(struct tevent_req *req,
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struct winbindd_response *response)
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{
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struct winbindd_pam_auth_state *state = tevent_req_data(
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req, struct winbindd_pam_auth_state);
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NTSTATUS status;
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D_NOTICE("Winbind external command PAM_AUTH end.\n");
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if (tevent_req_is_nterror(req, &status)) {
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set_auth_errors(response, status);
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return status;
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}
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response->result = WINBINDD_PENDING;
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status = append_auth_data(response,
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response,
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state->r->in.flags,
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state->r->out.validation->level,
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state->r->out.validation->validation,
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state->name_domain,
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state->name_user);
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fstrcpy(response->data.auth.krb5ccname,
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state->r->out.validation->krb5ccname);
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if (state->r->in.flags & WBFLAG_PAM_INFO3_TEXT) {
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bool ok;
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ok = add_trusted_domain_from_auth(
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state->r->out.validation->level,
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&response->data.auth.info3,
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&response->data.auth.info6);
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if (!ok) {
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DBG_ERR("add_trusted_domain_from_auth failed\n");
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set_auth_errors(response, NT_STATUS_LOGON_FAILURE);
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return NT_STATUS_LOGON_FAILURE;
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}
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}
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if (state->r->in.flags & WBFLAG_PAM_CACHED_LOGIN) {
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/* Store in-memory creds for single-signon using ntlm_auth. */
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status = winbindd_add_memory_creds(
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state->r->in.info->username,
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state->r->in.info->uid,
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state->r->in.info->password);
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D_DEBUG("winbindd_add_memory_creds returned: %s\n",
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nt_errstr(status));
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}
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if (state->r->in.flags & WBFLAG_PAM_GET_PWD_POLICY) {
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/*
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* WBFLAG_PAM_GET_PWD_POLICY is not used within
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* any Samba caller anymore.
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*
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* We just fake this based on the effective values
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* for the user, for legacy callers.
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*/
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status = fake_password_policy(response,
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state->r->out.validation->level,
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state->r->out.validation->validation);
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if (!NT_STATUS_IS_OK(status)) {
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DBG_ERR("Failed to fake password policy: %s\n",
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nt_errstr(status));
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set_auth_errors(response, status);
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return status;
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}
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}
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return NT_STATUS_OK;
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}
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