/* Unix SMB/CIFS implementation. Winbind authentication mechnism Copyright (C) Tim Potter 2000 Copyright (C) Andrew Bartlett 2001 - 2002 Copyright (C) Stefan Metzmacher 2005 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/auth.h" #include "nsswitch/winbind_client.h" #include "librpc/gen_ndr/ndr_netlogon.h" #include "librpc/gen_ndr/ndr_winbind.h" #include "lib/messaging/irpc.h" static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct winbindd_response *response, struct netr_SamInfo3 *info3) { size_t len = response->length - sizeof(struct winbindd_response); if (len > 4) { NTSTATUS status; DATA_BLOB blob; blob.length = len - 4; blob.data = (uint8_t *)(((char *)response->extra_data.data) + 4); status = ndr_pull_struct_blob(&blob, mem_ctx, info3, (ndr_pull_flags_fn_t)ndr_pull_netr_SamInfo3); return status; } else { DEBUG(2, ("get_info3_from_ndr: No info3 struct found!\n")); return NT_STATUS_UNSUCCESSFUL; } } static NTSTATUS winbind_want_check(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, const struct auth_usersupplied_info *user_info) { if (!user_info->mapped.account_name || !*user_info->mapped.account_name) { return NT_STATUS_NOT_IMPLEMENTED; } /* TODO: maybe limit the user scope to remote users only */ return NT_STATUS_OK; } /* Authenticate a user with a challenge/response using the samba3 winbind protocol */ static NTSTATUS winbind_check_password_samba3(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, const struct auth_usersupplied_info *user_info, struct auth_serversupplied_info **server_info) { struct winbindd_request request; struct winbindd_response response; NSS_STATUS result; NTSTATUS nt_status; struct netr_SamInfo3 info3; /* Send off request */ const struct auth_usersupplied_info *user_info_temp; nt_status = encrypt_user_info(mem_ctx, ctx->auth_ctx, AUTH_PASSWORD_RESPONSE, user_info, &user_info_temp); if (!NT_STATUS_IS_OK(nt_status)) { return nt_status; } user_info = user_info_temp; ZERO_STRUCT(request); ZERO_STRUCT(response); request.flags = WBFLAG_PAM_INFO3_NDR; request.data.auth_crap.logon_parameters = user_info->logon_parameters; safe_strcpy(request.data.auth_crap.user, user_info->client.account_name, sizeof(fstring)); safe_strcpy(request.data.auth_crap.domain, user_info->client.domain_name, sizeof(fstring)); safe_strcpy(request.data.auth_crap.workstation, user_info->workstation_name, sizeof(fstring)); memcpy(request.data.auth_crap.chal, ctx->auth_ctx->challenge.data.data, sizeof(request.data.auth_crap.chal)); request.data.auth_crap.lm_resp_len = MIN(user_info->password.response.lanman.length, sizeof(request.data.auth_crap.lm_resp)); request.data.auth_crap.nt_resp_len = MIN(user_info->password.response.nt.length, sizeof(request.data.auth_crap.nt_resp)); memcpy(request.data.auth_crap.lm_resp, user_info->password.response.lanman.data, request.data.auth_crap.lm_resp_len); memcpy(request.data.auth_crap.nt_resp, user_info->password.response.nt.data, request.data.auth_crap.nt_resp_len); result = winbindd_request(WINBINDD_PAM_AUTH_CRAP, &request, &response); nt_status = NT_STATUS(response.data.auth.nt_status); NT_STATUS_NOT_OK_RETURN(nt_status); if (result == NSS_STATUS_SUCCESS && response.extra_data.data) { union netr_Validation validation; nt_status = get_info3_from_ndr(mem_ctx, &response, &info3); SAFE_FREE(response.extra_data.data); NT_STATUS_NOT_OK_RETURN(nt_status); validation.sam3 = &info3; nt_status = make_server_info_netlogon_validation(mem_ctx, user_info->client.account_name, 3, &validation, server_info); return nt_status; } else if (result == NSS_STATUS_SUCCESS && !response.extra_data.data) { DEBUG(0, ("Winbindd authenticated the user [%s]\\[%s], " "but did not include the required info3 reply!\n", user_info->client.domain_name, user_info->client.account_name)); return NT_STATUS_INSUFFICIENT_LOGON_INFO; } else if (NT_STATUS_IS_OK(nt_status)) { DEBUG(1, ("Winbindd authentication for [%s]\\[%s] failed, " "but no error code is available!\n", user_info->client.domain_name, user_info->client.account_name)); return NT_STATUS_NO_LOGON_SERVERS; } return nt_status; } struct winbind_check_password_state { struct winbind_SamLogon req; }; /* Authenticate a user with a challenge/response using IRPC to the winbind task */ static NTSTATUS winbind_check_password(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, const struct auth_usersupplied_info *user_info, struct auth_serversupplied_info **server_info) { NTSTATUS status; struct server_id *winbind_servers; struct winbind_check_password_state *s; const struct auth_usersupplied_info *user_info_new; struct netr_IdentityInfo *identity_info; s = talloc(mem_ctx, struct winbind_check_password_state); NT_STATUS_HAVE_NO_MEMORY(s); winbind_servers = irpc_servers_byname(ctx->auth_ctx->msg_ctx, s, "winbind_server"); if ((winbind_servers == NULL) || (winbind_servers[0].id == 0)) { DEBUG(0, ("Winbind authentication for [%s]\\[%s] failed, " "no winbind_server running!\n", user_info->client.domain_name, user_info->client.account_name)); return NT_STATUS_NO_LOGON_SERVERS; } if (user_info->flags & USER_INFO_INTERACTIVE_LOGON) { struct netr_PasswordInfo *password_info; status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_HASH, user_info, &user_info_new); NT_STATUS_NOT_OK_RETURN(status); user_info = user_info_new; password_info = talloc(s, struct netr_PasswordInfo); NT_STATUS_HAVE_NO_MEMORY(password_info); password_info->lmpassword = *user_info->password.hash.lanman; password_info->ntpassword = *user_info->password.hash.nt; identity_info = &password_info->identity_info; s->req.in.logon_level = 1; s->req.in.logon.password= password_info; } else { struct netr_NetworkInfo *network_info; const uint8_t *challenge; status = encrypt_user_info(s, ctx->auth_ctx, AUTH_PASSWORD_RESPONSE, user_info, &user_info_new); NT_STATUS_NOT_OK_RETURN(status); user_info = user_info_new; network_info = talloc(s, struct netr_NetworkInfo); NT_STATUS_HAVE_NO_MEMORY(network_info); status = auth_get_challenge(ctx->auth_ctx, &challenge); NT_STATUS_NOT_OK_RETURN(status); memcpy(network_info->challenge, challenge, sizeof(network_info->challenge)); network_info->nt.length = user_info->password.response.nt.length; network_info->nt.data = user_info->password.response.nt.data; network_info->lm.length = user_info->password.response.lanman.length; network_info->lm.data = user_info->password.response.lanman.data; identity_info = &network_info->identity_info; s->req.in.logon_level = 2; s->req.in.logon.network = network_info; } identity_info->domain_name.string = user_info->client.domain_name; identity_info->parameter_control = user_info->logon_parameters; /* see MSV1_0_* */ identity_info->logon_id_low = 0; identity_info->logon_id_high = 0; identity_info->account_name.string = user_info->client.account_name; identity_info->workstation.string = user_info->workstation_name; s->req.in.validation_level = 3; status = IRPC_CALL(ctx->auth_ctx->msg_ctx, winbind_servers[0], winbind, WINBIND_SAMLOGON, &s->req, s); NT_STATUS_NOT_OK_RETURN(status); status = make_server_info_netlogon_validation(mem_ctx, user_info->client.account_name, s->req.in.validation_level, &s->req.out.validation, server_info); NT_STATUS_NOT_OK_RETURN(status); return NT_STATUS_OK; } static const struct auth_operations winbind_samba3_ops = { .name = "winbind_samba3", .get_challenge = auth_get_challenge_not_implemented, .want_check = winbind_want_check, .check_password = winbind_check_password_samba3 }; static const struct auth_operations winbind_ops = { .name = "winbind", .get_challenge = auth_get_challenge_not_implemented, .want_check = winbind_want_check, .check_password = winbind_check_password }; NTSTATUS auth_winbind_init(void) { NTSTATUS ret; ret = auth_register(&winbind_samba3_ops); if (!NT_STATUS_IS_OK(ret)) { DEBUG(0,("Failed to register 'winbind_samba3' auth backend!\n")); return ret; } ret = auth_register(&winbind_ops); if (!NT_STATUS_IS_OK(ret)) { DEBUG(0,("Failed to register 'winbind' auth backend!\n")); return ret; } return NT_STATUS_OK; }