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https://github.com/samba-team/samba.git
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c68f21f26f
Signed-off-by: Samuel Cabrero <scabrero@samba.org> Reviewed-by: Jeremy Allison <jra@samba.org>
275 lines
7.6 KiB
C
275 lines
7.6 KiB
C
/*
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Unix SMB/CIFS implementation.
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async implementation of WINBINDD_PAM_AUTH_CRAP
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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 "rpc_client/util_netlogon.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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struct winbindd_pam_auth_crap_state {
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uint8_t authoritative;
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uint32_t flags;
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bool pac_is_trusted;
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char *domain;
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char *user;
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struct wbint_PamAuthCrapValidation validation;
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NTSTATUS result;
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};
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static void winbindd_pam_auth_crap_done(struct tevent_req *subreq);
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struct tevent_req *winbindd_pam_auth_crap_send(
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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_crap_state *state;
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struct winbindd_domain *domain;
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const char *auth_domain = NULL;
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DATA_BLOB lm_resp = data_blob_null;
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DATA_BLOB nt_resp = data_blob_null;
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DATA_BLOB chal = data_blob_null;
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struct wbint_SidArray *require_membership_of_sid = NULL;
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NTSTATUS status;
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req = tevent_req_create(mem_ctx, &state,
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struct winbindd_pam_auth_crap_state);
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if (req == NULL) {
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return NULL;
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}
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state->authoritative = 1;
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state->flags = request->flags;
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if (state->flags & WBFLAG_PAM_AUTH_PAC) {
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state->result = winbindd_pam_auth_pac_verify(cli,
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state,
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&state->pac_is_trusted,
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&state->validation.level,
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&state->validation.validation);
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if (tevent_req_nterror(req, state->result)) {
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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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/* Ensure null termination */
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request->data.auth_crap.user[
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sizeof(request->data.auth_crap.user)-1] = '\0';
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request->data.auth_crap.domain[
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sizeof(request->data.auth_crap.domain)-1] = '\0';
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request->data.auth_crap.workstation[
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sizeof(request->data.auth_crap.workstation)-1] = '\0';
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DBG_NOTICE("[%5lu]: pam auth crap domain: [%s] user: [%s] "
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"workstation: [%s]\n",
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(unsigned long)cli->pid,
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request->data.auth_crap.domain,
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request->data.auth_crap.user,
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request->data.auth_crap.workstation);
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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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auth_domain = request->data.auth_crap.domain;
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if (auth_domain[0] == '\0') {
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auth_domain = lp_workgroup();
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}
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domain = find_auth_domain(request->flags, auth_domain);
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if (domain == NULL) {
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/*
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* We don't know the domain so
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* we're not authoritative
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*/
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state->authoritative = 0;
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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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if (request->data.auth_crap.workstation[0] == '\0') {
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fstrcpy(request->data.auth_crap.workstation, lp_netbios_name());
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}
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if (request->data.auth_crap.lm_resp_len > sizeof(request->data.auth_crap.lm_resp)
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|| request->data.auth_crap.nt_resp_len > sizeof(request->data.auth_crap.nt_resp)) {
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if (!(request->flags & WBFLAG_BIG_NTLMV2_BLOB) ||
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request->extra_len != request->data.auth_crap.nt_resp_len) {
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DBG_ERR("Invalid password length %u/%u\n",
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request->data.auth_crap.lm_resp_len,
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request->data.auth_crap.nt_resp_len);
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tevent_req_nterror(req, NT_STATUS_INVALID_PARAMETER);
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return tevent_req_post(req, ev);
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}
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}
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state->domain = talloc_strdup(state, request->data.auth_crap.domain);
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if (tevent_req_nomem(state->domain, req)) {
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return tevent_req_post(req, ev);
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}
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state->user = talloc_strdup(state, request->data.auth_crap.user);
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if (tevent_req_nomem(state->user, req)) {
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return tevent_req_post(req, ev);
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}
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status = extra_data_to_sid_array(
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request->data.auth_crap.require_membership_of_sid,
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state,
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&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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lm_resp = data_blob_talloc(state,
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request->data.auth_crap.lm_resp,
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request->data.auth_crap.lm_resp_len);
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if (tevent_req_nomem(lm_resp.data, req)) {
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return tevent_req_post(req, ev);
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}
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if (request->flags & WBFLAG_BIG_NTLMV2_BLOB) {
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nt_resp = data_blob_talloc(state,
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request->extra_data.data,
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request->data.auth_crap.nt_resp_len);
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} else {
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nt_resp = data_blob_talloc(state,
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request->data.auth_crap.nt_resp,
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request->data.auth_crap.nt_resp_len);
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}
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if (tevent_req_nomem(nt_resp.data, req)) {
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return tevent_req_post(req, ev);
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}
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chal = data_blob_talloc(state,
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request->data.auth_crap.chal,
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8);
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if (tevent_req_nomem(chal.data, req)) {
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return tevent_req_post(req, ev);
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}
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subreq = dcerpc_wbint_PamAuthCrap_send(state,
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global_event_context(),
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dom_child_handle(domain),
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request->client_name,
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request->pid,
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request->flags,
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request->data.auth_crap.user,
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request->data.auth_crap.domain,
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request->data.auth_crap.workstation,
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lm_resp,
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nt_resp,
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chal,
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request->data.auth_crap.logon_parameters,
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require_membership_of_sid,
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&state->authoritative,
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&state->validation);
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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_crap_done, req);
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return req;
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}
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static void winbindd_pam_auth_crap_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_crap_state *state = tevent_req_data(
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req, struct winbindd_pam_auth_crap_state);
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NTSTATUS status;
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status = dcerpc_wbint_PamAuthCrap_recv(subreq, state, &state->result);
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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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tevent_req_done(req);
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}
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NTSTATUS winbindd_pam_auth_crap_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_crap_state *state = tevent_req_data(
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req, struct winbindd_pam_auth_crap_state);
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NTSTATUS status;
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if (tevent_req_is_nterror(req, &status)) {
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goto out;
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}
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if (NT_STATUS_IS_ERR(state->result)) {
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status = state->result;
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goto out;
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}
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status = append_auth_data(response,
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response,
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state->flags,
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state->validation.level,
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state->validation.validation,
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state->domain,
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state->user);
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if (NT_STATUS_IS_ERR(status)) {
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goto out;
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}
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if (state->flags & WBFLAG_PAM_AUTH_PAC && !state->pac_is_trusted) {
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/*
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* Clear the flag just in state to do no add the domain
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* from auth below.
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*/
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state->flags &= ~WBFLAG_PAM_INFO3_TEXT;
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}
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if (state->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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response->data.auth.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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status = NT_STATUS_LOGON_FAILURE;
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DBG_ERR("add_trusted_domain_from_auth failed\n");
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set_auth_errors(response, status);
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response->data.auth.authoritative =
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state->authoritative;
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return status;
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}
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}
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status = NT_STATUS_OK;
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out:
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set_auth_errors(response, status);
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response->data.auth.authoritative = state->authoritative;
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response->result = WINBINDD_PENDING;
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return NT_STATUS(response->data.auth.nt_status);
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}
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