mirror of
https://github.com/samba-team/samba.git
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cad20ab63b
(This used to be commit e1a8e9b7f3
)
163 lines
5.0 KiB
C
163 lines
5.0 KiB
C
/*
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Unix SMB/CIFS implementation.
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Winbind authentication mechnism
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Copyright (C) Tim Potter 2000
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Copyright (C) Andrew Bartlett 2001 - 2002
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include "includes.h"
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#undef DBGC_CLASS
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#define DBGC_CLASS DBGC_AUTH
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static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct winbindd_response *response, NET_USER_INFO_3 *info3)
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{
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uint8 *info3_ndr;
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size_t len = response->length - sizeof(response);
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prs_struct ps;
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if (len > 0) {
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info3_ndr = response->extra_data;
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if (!prs_init(&ps, len, mem_ctx, UNMARSHALL)) {
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return NT_STATUS_NO_MEMORY;
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}
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prs_copy_data_in(&ps, info3_ndr, len);
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prs_set_offset(&ps,0);
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if (!net_io_user_info3("", info3, &ps, 1, 3)) {
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DEBUG(2, ("get_info3_from_ndr: could not parse info3 struct!\n"));
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return NT_STATUS_UNSUCCESSFUL;
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}
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prs_mem_free(&ps);
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return NT_STATUS_OK;
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} else {
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DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n"));
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return NT_STATUS_UNSUCCESSFUL;
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}
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}
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/* Authenticate a user with a challenge/response */
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static NTSTATUS check_winbind_security(const struct auth_context *auth_context,
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void *my_private_data,
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TALLOC_CTX *mem_ctx,
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const auth_usersupplied_info *user_info,
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auth_serversupplied_info **server_info)
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{
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struct winbindd_request request;
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struct winbindd_response response;
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NSS_STATUS result;
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NTSTATUS nt_status;
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NET_USER_INFO_3 info3;
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if (!user_info) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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if (!auth_context) {
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DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n",
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user_info->internal_username.str));
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return NT_STATUS_UNSUCCESSFUL;
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}
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/* Send off request */
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ZERO_STRUCT(request);
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ZERO_STRUCT(response);
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request.data.auth_crap.flags = WINBIND_PAM_INFO3_NDR;
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push_utf8_fstring(request.data.auth_crap.user,
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user_info->smb_name.str);
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push_utf8_fstring(request.data.auth_crap.domain,
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user_info->domain.str);
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push_utf8_fstring(request.data.auth_crap.workstation,
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user_info->wksta_name.str);
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memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal));
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request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length,
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sizeof(request.data.auth_crap.lm_resp));
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request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length,
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sizeof(request.data.auth_crap.nt_resp));
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memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data,
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request.data.auth_crap.lm_resp_len);
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memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data,
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request.data.auth_crap.nt_resp_len);
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result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response);
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if ( result == NSS_STATUS_UNAVAIL ) {
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struct auth_methods *auth_method = my_private_data;
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if ( auth_method )
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return auth_method->auth(auth_context, auth_method->private_data,
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mem_ctx, user_info, server_info);
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else
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/* log an error since this should not happen */
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DEBUG(0,("check_winbind_security: ERROR! my_private_data == NULL!\n"));
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}
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nt_status = NT_STATUS(response.data.auth.nt_status);
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if (result == NSS_STATUS_SUCCESS && response.extra_data) {
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if (NT_STATUS_IS_OK(nt_status)) {
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if (NT_STATUS_IS_OK(nt_status = get_info3_from_ndr(mem_ctx, &response, &info3))) {
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nt_status =
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make_server_info_info3(mem_ctx,
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user_info->internal_username.str,
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user_info->smb_name.str,
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user_info->domain.str,
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server_info,
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&info3);
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}
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}
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} else if (NT_STATUS_IS_OK(nt_status)) {
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nt_status = NT_STATUS_UNSUCCESSFUL;
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}
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return nt_status;
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}
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/* module initialisation */
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static NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method)
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{
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if (!make_auth_methods(auth_context, auth_method)) {
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return NT_STATUS_NO_MEMORY;
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}
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(*auth_method)->name = "winbind";
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(*auth_method)->auth = check_winbind_security;
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if (param && *param) {
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/* we load the 'fallback' module - if winbind isn't here, call this
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module */
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if (!load_auth_module(auth_context, param, (auth_methods **)&(*auth_method)->private_data)) {
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return NT_STATUS_UNSUCCESSFUL;
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}
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}
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return NT_STATUS_OK;
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}
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NTSTATUS auth_winbind_init(void)
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{
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return smb_register_auth(AUTH_INTERFACE_VERSION, "winbind", auth_init_winbind);
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}
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