/* Unix SMB/CIFS implementation. Winbind client authentication mechanism designed to defer all authentication to the winbind daemon. Copyright (C) Tim Potter 2000 Copyright (C) Andrew Bartlett 2001 - 2002 Copyright (C) Dan Sledz 2009 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/>. */ /* This auth module is very similar to auth_winbind with 3 distinct * differences. * * 1) Does not fallback to another auth module if winbindd is unavailable * 2) Does not validate the domain of the user * 3) Handles unencrypted passwords * * The purpose of this module is to defer all authentication decisions (ie: * local user vs NIS vs LDAP vs AD; encrypted vs plaintext) to the wbc * compatible daemon. This centeralizes all authentication decisions to a * single provider. * * This auth backend is most useful when used in conjunction with pdb_wbc_sam. */ #include "includes.h" #undef DBGC_CLASS #define DBGC_CLASS DBGC_AUTH /* Authenticate a user with a challenge/response */ static NTSTATUS check_wbc_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; if (!user_info || !auth_context || !server_info) { return NT_STATUS_INVALID_PARAMETER; } /* Send off request */ DEBUG(10, ("Check auth for: [%s]", user_info->mapped.account_name)); 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; /* Handle plaintext */ if (!user_info->encrypted) { DEBUG(3,("Checking plaintext password for %s.\n", user_info->mapped.account_name)); params.level = WBC_AUTH_USER_LEVEL_PLAIN; params.password.plaintext = (char *)user_info->plaintext_password.data; } else { DEBUG(3,("Checking encrypted password for %s.\n", user_info->mapped.account_name)); params.level = WBC_AUTH_USER_LEVEL_RESPONSE; memcpy(params.password.response.challenge, auth_context->challenge.data, sizeof(params.password.response.challenge)); params.password.response.nt_length = user_info->nt_resp.length; params.password.response.nt_data = user_info->nt_resp.data; params.password.response.lm_length = user_info->lm_resp.length; params.password.response.lm_data = user_info->lm_resp.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,("wbcAuthenticateUserEx failed (%d): %s\n", wbc_status, wbcErrorString(wbc_status))); } if (wbc_status == WBC_ERR_NO_MEMORY) { return NT_STATUS_NO_MEMORY; } 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; } DEBUG(10,("wbcAuthenticateUserEx succeeded\n")); 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_wbc(struct auth_context *auth_context, const char *param, auth_methods **auth_method) { struct auth_methods *result; result = TALLOC_ZERO_P(auth_context, struct auth_methods); if (result == NULL) { return NT_STATUS_NO_MEMORY; } result->name = "wbc"; result->auth = check_wbc_security; *auth_method = result; return NT_STATUS_OK; } NTSTATUS auth_wbc_init(void) { return smb_register_auth(AUTH_INTERFACE_VERSION, "wbc", auth_init_wbc); }