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Diffstat (limited to 'source4/auth/ntlm/auth_winbind.c')
-rw-r--r--source4/auth/ntlm/auth_winbind.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/source4/auth/ntlm/auth_winbind.c b/source4/auth/ntlm/auth_winbind.c
new file mode 100644
index 0000000000..ac63b242e4
--- /dev/null
+++ b/source4/auth/ntlm/auth_winbind.c
@@ -0,0 +1,282 @@
+/*
+ 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/session_proto.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"
+#include "param/param.h"
+
+static NTSTATUS get_info3_from_ndr(TALLOC_CTX *mem_ctx, struct smb_iconv_convenience *iconv_convenience, struct winbindd_response *response, struct netr_SamInfo3 *info3)
+{
+ size_t len = response->length - sizeof(struct winbindd_response);
+ if (len > 4) {
+ enum ndr_err_code ndr_err;
+ DATA_BLOB blob;
+ blob.length = len - 4;
+ blob.data = (uint8_t *)(((char *)response->extra_data.data) + 4);
+
+ ndr_err = ndr_pull_struct_blob(&blob, mem_ctx,
+ iconv_convenience, info3,
+ (ndr_pull_flags_fn_t)ndr_pull_netr_SamInfo3);
+ if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
+ return ndr_map_error2ntstatus(ndr_err);
+ }
+
+ return NT_STATUS_OK;
+ } 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_response(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, lp_iconv_convenience(ctx->auth_ctx->lp_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
+};
+
+_PUBLIC_ 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;
+}