/* 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" #include "auth.h" #include "nsswitch/libwbclient/wbclient.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_AUTH /* 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 struct auth_usersupplied_info *user_info, struct auth_serversupplied_info **server_info) { NTSTATUS nt_status; wbcErr wbc_status; struct wbcAuthUserParams params; struct wbcAuthUserInfo *info = NULL; struct wbcAuthErrorInfo *err = NULL; ZERO_STRUCT(params); if (!user_info) { return NT_STATUS_INVALID_PARAMETER; } DEBUG(10, ("Check auth for: [%s]\n", user_info->mapped.account_name)); 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->mapped.account_name)); return NT_STATUS_INVALID_PARAMETER; } if (strequal(user_info->mapped.domain_name, get_global_sam_name())) { DEBUG(3,("check_winbind_security: Not using winbind, requested domain [%s] was for this SAM.\n", user_info->mapped.domain_name)); return NT_STATUS_NOT_IMPLEMENTED; } /* Send off request */ params.account_name = user_info->client.account_name; params.domain_name = user_info->mapped.domain_name; params.workstation_name = user_info->workstation_name; params.flags = 0; params.parameter_control= user_info->logon_parameters; params.level = WBC_AUTH_USER_LEVEL_RESPONSE; memcpy(params.password.response.challenge, auth_context->challenge.data, sizeof(params.password.response.challenge)); if (user_info->password.response.nt.length != 0) { params.password.response.nt_length = user_info->password.response.nt.length; params.password.response.nt_data = user_info->password.response.nt.data; } if (user_info->password.response.lanman.length != 0) { params.password.response.lm_length = user_info->password.response.lanman.length; params.password.response.lm_data = user_info->password.response.lanman.data; } /* we are contacting the privileged pipe */ become_root(); wbc_status = wbcAuthenticateUserEx(¶ms, &info, &err); unbecome_root(); if (!WBC_ERROR_IS_OK(wbc_status)) { DEBUG(10,("check_winbind_security: wbcAuthenticateUserEx failed: %s\n", wbcErrorString(wbc_status))); } if (wbc_status == WBC_ERR_NO_MEMORY) { return NT_STATUS_NO_MEMORY; } if (wbc_status == WBC_ERR_WINBIND_NOT_AVAILABLE) { 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); return NT_STATUS_LOGON_FAILURE; } if (wbc_status == WBC_ERR_AUTH_ERROR) { nt_status = NT_STATUS(err->nt_status); wbcFreeMemory(err); return nt_status; } if (!WBC_ERROR_IS_OK(wbc_status)) { return NT_STATUS_LOGON_FAILURE; } nt_status = make_server_info_wbcAuthUserInfo(mem_ctx, user_info->client.account_name, user_info->mapped.domain_name, info, server_info); wbcFreeMemory(info); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } (*server_info)->nss_token |= user_info->was_mapped; return nt_status; } /* module initialisation */ static NTSTATUS auth_init_winbind(struct auth_context *auth_context, const char *param, auth_methods **auth_method) { struct auth_methods *result; result = talloc_zero(auth_context, struct auth_methods); if (result == NULL) { return NT_STATUS_NO_MEMORY; } result->name = "winbind"; result->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; } result->private_data = (void *)priv; } *auth_method = result; return NT_STATUS_OK; } NTSTATUS auth_winbind_init(void) { return smb_register_auth(AUTH_INTERFACE_VERSION, "winbind", auth_init_winbind); }