/* 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 "auth/ntlm/auth_proto.h" #include "auth/auth_sam_reply.h" #include "librpc/gen_ndr/ndr_winbind_c.h" #include "lib/messaging/irpc.h" #include "param/param.h" #include "nsswitch/libwbclient/wbclient.h" #include "libcli/security/security.h" _PUBLIC_ NTSTATUS auth4_winbind_init(void); static NTSTATUS get_info3_from_wbcAuthUserInfo(TALLOC_CTX *mem_ctx, struct wbcAuthUserInfo *info, struct netr_SamInfo3 *info3) { int i, j; struct samr_RidWithAttribute *rids = NULL; struct dom_sid *user_sid; struct dom_sid *group_sid; user_sid = (struct dom_sid *)(void *)&info->sids[0].sid; group_sid = (struct dom_sid *)(void *)&info->sids[1].sid; info3->base.logon_time = info->logon_time; info3->base.logoff_time = info->logoff_time; info3->base.kickoff_time = info->kickoff_time; info3->base.last_password_change = info->pass_last_set_time; info3->base.allow_password_change = info->pass_can_change_time; info3->base.force_password_change = info->pass_must_change_time; info3->base.account_name.string = talloc_strdup(mem_ctx, info->account_name); info3->base.full_name.string = talloc_strdup(mem_ctx, info->full_name); info3->base.logon_script.string = talloc_strdup(mem_ctx, info->logon_script); info3->base.profile_path.string = talloc_strdup(mem_ctx, info->profile_path); info3->base.home_directory.string = talloc_strdup(mem_ctx, info->home_directory); info3->base.home_drive.string = talloc_strdup(mem_ctx, info->home_drive); info3->base.logon_server.string = talloc_strdup(mem_ctx, info->logon_server); info3->base.logon_domain.string = talloc_strdup(mem_ctx, info->domain_name); info3->base.logon_count = info->logon_count; info3->base.bad_password_count = info->bad_password_count; info3->base.user_flags = info->user_flags; memcpy(info3->base.key.key, info->user_session_key, sizeof(info3->base.key.key)); memcpy(info3->base.LMSessKey.key, info->lm_session_key, sizeof(info3->base.LMSessKey.key)); info3->base.acct_flags = info->acct_flags; info3->base.sub_auth_status = 0; info3->base.last_successful_logon = 0; info3->base.last_failed_logon = 0; info3->base.failed_logon_count = 0; info3->base.reserved = 0; if (info->num_sids < 2) { return NT_STATUS_INVALID_PARAMETER; } dom_sid_split_rid(mem_ctx, user_sid, &info3->base.domain_sid, &info3->base.rid); dom_sid_split_rid(mem_ctx, group_sid, NULL, &info3->base.primary_gid); /* We already handled the first two, now take care of the rest */ info3->base.groups.count = info->num_sids - 2; rids = talloc_array(mem_ctx, struct samr_RidWithAttribute, info3->base.groups.count); NT_STATUS_HAVE_NO_MEMORY(rids); for (i = 2, j = 0; i < info->num_sids; ++i, ++j) { struct dom_sid *tmp_sid; tmp_sid = (struct dom_sid *)(void *)&info->sids[1].sid; rids[j].attributes = info->sids[i].attributes; dom_sid_split_rid(mem_ctx, tmp_sid, NULL, &rids[j].rid); } info3->base.groups.rids = rids; return NT_STATUS_OK; } 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; } 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_user_info_dc **user_info_dc) { NTSTATUS status; struct dcerpc_binding_handle *irpc_handle; struct winbind_check_password_state *s; const struct auth_usersupplied_info *user_info_new; struct netr_IdentityInfo *identity_info; if (!ctx->auth_ctx->msg_ctx) { DEBUG(0,("winbind_check_password: auth_context_create was called with out messaging context\n")); return NT_STATUS_INTERNAL_ERROR; } s = talloc(mem_ctx, struct winbind_check_password_state); NT_STATUS_HAVE_NO_MEMORY(s); irpc_handle = irpc_binding_handle_by_name(s, ctx->auth_ctx->msg_ctx, "winbind_server", &ndr_table_winbind); if (irpc_handle == NULL) { 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; uint8_t chal[8]; 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, chal); NT_STATUS_NOT_OK_RETURN(status); memcpy(network_info->challenge, chal, 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 = dcerpc_winbind_SamLogon_r(irpc_handle, s, &s->req); NT_STATUS_NOT_OK_RETURN(status); status = make_user_info_dc_netlogon_validation(mem_ctx, user_info->client.account_name, s->req.in.validation_level, &s->req.out.validation, true, /* This user was authenticated */ user_info_dc); NT_STATUS_NOT_OK_RETURN(status); return NT_STATUS_OK; } /* Authenticate a user with a challenge/response using the samba3 winbind protocol via libwbclient */ static NTSTATUS winbind_check_password_wbclient(struct auth_method_context *ctx, TALLOC_CTX *mem_ctx, const struct auth_usersupplied_info *user_info, struct auth_user_info_dc **user_info_dc) { struct wbcAuthUserParams params; struct wbcAuthUserInfo *info = NULL; struct wbcAuthErrorInfo *err = NULL; wbcErr wbc_status; NTSTATUS nt_status; struct netr_SamInfo3 info3; union netr_Validation validation; /* 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(params); ZERO_STRUCT(info3); /*params.flags = WBFLAG_PAM_INFO3_NDR;*/ params.parameter_control = user_info->logon_parameters; params.parameter_control |= WBC_MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT | WBC_MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT; params.level = WBC_AUTH_USER_LEVEL_RESPONSE; params.account_name = user_info->client.account_name; params.domain_name = user_info->client.domain_name; params.workstation_name = user_info->workstation_name; d_fprintf(stderr, "looking up %s@%s logging in from %s\n", params.account_name, params.domain_name, params.workstation_name); memcpy(params.password.response.challenge, ctx->auth_ctx->challenge.data.data, sizeof(params.password.response.challenge)); params.password.response.lm_length = user_info->password.response.lanman.length; params.password.response.nt_length = user_info->password.response.nt.length; params.password.response.lm_data = user_info->password.response.lanman.data; params.password.response.nt_data = user_info->password.response.nt.data; wbc_status = wbcAuthenticateUserEx(¶ms, &info, &err); if (wbc_status == WBC_ERR_AUTH_ERROR) { DEBUG(1, ("error was %s (0x%08x)\nerror message was '%s'\n", err->nt_string, err->nt_status, err->display_string)); nt_status = NT_STATUS(err->nt_status); wbcFreeMemory(err); NT_STATUS_NOT_OK_RETURN(nt_status); } else if (!WBC_ERROR_IS_OK(wbc_status)) { DEBUG(1, ("wbcAuthenticateUserEx: failed with %u - %s\n", wbc_status, wbcErrorString(wbc_status))); return NT_STATUS_LOGON_FAILURE; } nt_status = get_info3_from_wbcAuthUserInfo(mem_ctx, info, &info3); wbcFreeMemory(info); NT_STATUS_NOT_OK_RETURN(nt_status); validation.sam3 = &info3; nt_status = make_user_info_dc_netlogon_validation(mem_ctx, user_info->client.account_name, 3, &validation, true, /* This user was authenticated */ user_info_dc); return nt_status; } static const struct auth_operations winbind_ops = { .name = "winbind", .want_check = winbind_want_check, .check_password = winbind_check_password }; static const struct auth_operations winbind_wbclient_ops = { .name = "winbind_wbclient", .want_check = winbind_want_check, .check_password = winbind_check_password_wbclient }; _PUBLIC_ NTSTATUS auth4_winbind_init(void) { NTSTATUS ret; ret = auth_register(&winbind_ops); if (!NT_STATUS_IS_OK(ret)) { DEBUG(0,("Failed to register 'winbind' auth backend!\n")); return ret; } ret = auth_register(&winbind_wbclient_ops); if (!NT_STATUS_IS_OK(ret)) { DEBUG(0,("Failed to register 'winbind_wbclient' auth backend!\n")); return ret; } return NT_STATUS_OK; }