/* Unix SMB/CIFS implementation. Winbind authentication mechnism Copyright (C) Tim Potter 2000 Copyright (C) Andrew Bartlett 2001 - 2002 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" #undef DBGC_CLASS #define DBGC_CLASS DBGC_AUTH static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct winbindd_response *response, NET_USER_INFO_3 *info3) { uint8 *info3_ndr; size_t len = response->length - sizeof(struct winbindd_response); prs_struct ps; if (len > 0) { info3_ndr = (uint8 *)response->extra_data.data; if (!prs_init(&ps, len, mem_ctx, UNMARSHALL)) { return NT_STATUS_NO_MEMORY; } prs_copy_data_in(&ps, (char *)info3_ndr, len); prs_set_offset(&ps,0); if (!net_io_user_info3("", info3, &ps, 1, 3, False)) { DEBUG(2, ("get_info3_from_ndr: could not parse info3 struct!\n")); return NT_STATUS_UNSUCCESSFUL; } prs_mem_free(&ps); return NT_STATUS_OK; } else { DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n")); return NT_STATUS_UNSUCCESSFUL; } } /* Authenticate a user with a challenge/response */ static NTSTATUS check_winbind_security(const struct auth_context *auth_context, void *my_private_data, TALLOC_CTX *mem_ctx, const auth_usersupplied_info *user_info, auth_serversupplied_info **server_info) { struct winbindd_request request; struct winbindd_response response; NSS_STATUS result; NTSTATUS nt_status; NET_USER_INFO_3 info3; if (!user_info) { return NT_STATUS_INVALID_PARAMETER; } if (!auth_context) { DEBUG(3,("Password for user %s cannot be checked because we have no auth_info to get the challenge from.\n", user_info->internal_username)); return NT_STATUS_INVALID_PARAMETER; } if (strequal(user_info->domain, get_global_sam_name())) { DEBUG(3,("check_winbind_security: Not using winbind, requested domain [%s] was for this SAM.\n", user_info->domain)); return NT_STATUS_NOT_IMPLEMENTED; } /* Send off request */ ZERO_STRUCT(request); ZERO_STRUCT(response); request.flags = WBFLAG_PAM_INFO3_NDR; request.data.auth_crap.logon_parameters = user_info->logon_parameters; fstrcpy(request.data.auth_crap.user, user_info->smb_name); fstrcpy(request.data.auth_crap.domain, user_info->domain); fstrcpy(request.data.auth_crap.workstation, user_info->wksta_name); memcpy(request.data.auth_crap.chal, auth_context->challenge.data, sizeof(request.data.auth_crap.chal)); request.data.auth_crap.lm_resp_len = MIN(user_info->lm_resp.length, sizeof(request.data.auth_crap.lm_resp)); request.data.auth_crap.nt_resp_len = MIN(user_info->nt_resp.length, sizeof(request.data.auth_crap.nt_resp)); memcpy(request.data.auth_crap.lm_resp, user_info->lm_resp.data, request.data.auth_crap.lm_resp_len); memcpy(request.data.auth_crap.nt_resp, user_info->nt_resp.data, request.data.auth_crap.nt_resp_len); /* we are contacting the privileged pipe */ become_root(); result = winbindd_priv_request_response(WINBINDD_PAM_AUTH_CRAP, &request, &response); unbecome_root(); if ( result == NSS_STATUS_UNAVAIL ) { struct auth_methods *auth_method = (struct auth_methods *)my_private_data; if ( auth_method ) return auth_method->auth(auth_context, auth_method->private_data, mem_ctx, user_info, server_info); else /* log an error since this should not happen */ DEBUG(0,("check_winbind_security: ERROR! my_private_data == NULL!\n")); } nt_status = NT_STATUS(response.data.auth.nt_status); if (result == NSS_STATUS_SUCCESS && response.extra_data.data) { if (NT_STATUS_IS_OK(nt_status)) { if (NT_STATUS_IS_OK(nt_status = get_info3_from_ndr(mem_ctx, &response, &info3))) { nt_status = make_server_info_info3(mem_ctx, user_info->smb_name, user_info->domain, server_info, &info3); } if (NT_STATUS_IS_OK(nt_status)) { if (user_info->was_mapped) { (*server_info)->was_mapped = user_info->was_mapped; } } } } else if (NT_STATUS_IS_OK(nt_status)) { nt_status = NT_STATUS_NO_LOGON_SERVERS; } SAFE_FREE(response.extra_data.data); return nt_status; } /* module initialisation */ static NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method) { if (!make_auth_methods(auth_context, auth_method)) { return NT_STATUS_NO_MEMORY; } (*auth_method)->name = "winbind"; (*auth_method)->auth = check_winbind_security; if (param && *param) { /* we load the 'fallback' module - if winbind isn't here, call this module */ auth_methods *priv; if (!load_auth_module(auth_context, param, &priv)) { return NT_STATUS_UNSUCCESSFUL; } (*auth_method)->private_data = (void *)priv; } return NT_STATUS_OK; } NTSTATUS auth_winbind_init(void) { return smb_register_auth(AUTH_INTERFACE_VERSION, "winbind", auth_init_winbind); }