diff options
author | Simo Sorce <idra@samba.org> | 2010-01-26 11:56:16 -0500 |
---|---|---|
committer | Simo Sorce <idra@samba.org> | 2010-01-27 14:03:06 -0500 |
commit | b63b9bcd42e864d4b7024944c9d0b467487348f0 (patch) | |
tree | 2e4b058873a64f86781fe335d036c8a8cc39d0a3 /source4/kdc/wdc-samba4.c | |
parent | 1f2e9e90bdbd609dc6316c6dd71faa25a0138915 (diff) | |
download | samba-b63b9bcd42e864d4b7024944c9d0b467487348f0.tar.gz samba-b63b9bcd42e864d4b7024944c9d0b467487348f0.tar.bz2 samba-b63b9bcd42e864d4b7024944c9d0b467487348f0.zip |
s4:windc move windc plugin in its own file
Keep all heimdal related plugin code within wdc-samba4.c
Leave only interfaces common to multiple plugins in pac-glue.c
Diffstat (limited to 'source4/kdc/wdc-samba4.c')
-rw-r--r-- | source4/kdc/wdc-samba4.c | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/source4/kdc/wdc-samba4.c b/source4/kdc/wdc-samba4.c new file mode 100644 index 0000000000..2ff266e4f4 --- /dev/null +++ b/source4/kdc/wdc-samba4.c @@ -0,0 +1,212 @@ +/* + Unix SMB/CIFS implementation. + + PAC Glue between Samba and the KDC + + Copyright (C) Andrew Bartlett <abartlet@samba.org> 2005-2009 + Copyright (C) Simo Sorce <idra@samba.org> 2010 + + 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 "../libds/common/flags.h" +#include "auth/auth.h" +#include "kdc/kdc.h" +#include "param/param.h" +#include "kdc/pac-glue.h" + +/* Given the right private pointer from hdb_samba4, get a PAC from the attached ldb messages */ +static krb5_error_code samba_wdc_get_pac(void *priv, krb5_context context, + struct hdb_entry_ex *client, + krb5_pac *pac) +{ + TALLOC_CTX *mem_ctx; + DATA_BLOB *pac_blob; + krb5_error_code ret; + NTSTATUS nt_status; + + mem_ctx = talloc_named(client->ctx, 0, "samba_get_pac context"); + if (!mem_ctx) { + return ENOMEM; + } + + nt_status = samba_kdc_get_pac_blob(mem_ctx, client, &pac_blob); + if (!NT_STATUS_IS_OK(nt_status)) { + talloc_free(mem_ctx); + return EINVAL; + } + + ret = samba_make_krb5_pac(context, pac_blob, pac); + + talloc_free(mem_ctx); + return ret; +} + +/* Resign (and reform, including possibly new groups) a PAC */ + +static krb5_error_code samba_wdc_reget_pac(void *priv, krb5_context context, + const krb5_principal client_principal, + struct hdb_entry_ex *client, + struct hdb_entry_ex *server, krb5_pac *pac) +{ + struct hdb_samba4_private *p = talloc_get_type(server->ctx, struct hdb_samba4_private); + TALLOC_CTX *mem_ctx = talloc_named(p, 0, "samba_kdc_reget_pac context"); + DATA_BLOB *pac_blob; + krb5_error_code ret; + NTSTATUS nt_status; + + if (!mem_ctx) { + return ENOMEM; + } + + pac_blob = talloc_zero(mem_ctx, DATA_BLOB); + if (!pac_blob) { + talloc_free(mem_ctx); + return ENOMEM; + } + + /* The user account may be set not to want the PAC */ + if (!samba_princ_needs_pac(server)) { + talloc_free(mem_ctx); + return EINVAL; + } + + nt_status = samba_kdc_update_pac_blob(mem_ctx, context, + p->iconv_convenience, + pac, pac_blob); + if (!NT_STATUS_IS_OK(nt_status)) { + DEBUG(0, ("Building PAC failed: %s\n", + nt_errstr(nt_status))); + talloc_free(mem_ctx); + return EINVAL; + } + + /* We now completly regenerate this pac */ + krb5_pac_free(context, *pac); + + ret = samba_make_krb5_pac(context, pac_blob, pac); + + talloc_free(mem_ctx); + return ret; +} + +/* Given an hdb entry (and in particular it's private member), consult + * the account_ok routine in auth/auth_sam.c for consistancy */ +static krb5_error_code samba_wdc_check_client_access(void *priv, + krb5_context context, + krb5_kdc_configuration *config, + hdb_entry_ex *client_ex, const char *client_name, + hdb_entry_ex *server_ex, const char *server_name, + KDC_REQ *req, + krb5_data *e_data) +{ + krb5_error_code ret; + NTSTATUS nt_status; + TALLOC_CTX *tmp_ctx; + struct hdb_samba4_private *p; + char *workstation = NULL; + HostAddresses *addresses = req->req_body.addresses; + int i; + bool password_change; + + tmp_ctx = talloc_new(client_ex->ctx); + p = talloc_get_type(client_ex->ctx, struct hdb_samba4_private); + + if (!tmp_ctx) { + return ENOMEM; + } + + if (addresses) { + for (i=0; i < addresses->len; i++) { + if (addresses->val->addr_type == KRB5_ADDRESS_NETBIOS) { + workstation = talloc_strndup(tmp_ctx, addresses->val->address.data, MIN(addresses->val->address.length, 15)); + if (workstation) { + break; + } + } + } + } + + /* Strip space padding */ + if (workstation) { + i = MIN(strlen(workstation), 15); + for (; i > 0 && workstation[i - 1] == ' '; i--) { + workstation[i - 1] = '\0'; + } + } + + password_change = (server_ex && server_ex->entry.flags.change_pw); + + /* we allow all kinds of trusts here */ + nt_status = authsam_account_ok(tmp_ctx, + p->samdb, + MSV1_0_ALLOW_SERVER_TRUST_ACCOUNT | MSV1_0_ALLOW_WORKSTATION_TRUST_ACCOUNT, + p->realm_dn, + p->msg, + workstation, + client_name, true, password_change); + + if (NT_STATUS_IS_OK(nt_status)) { + /* Now do the standard Heimdal check */ + ret = kdc_check_flags(context, config, + client_ex, client_name, + server_ex, server_name, + req->msg_type == krb_as_req); + } else { + if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_MUST_CHANGE)) + ret = KRB5KDC_ERR_KEY_EXPIRED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_PASSWORD_EXPIRED)) + ret = KRB5KDC_ERR_KEY_EXPIRED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_EXPIRED)) + ret = KRB5KDC_ERR_CLIENT_REVOKED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_DISABLED)) + ret = KRB5KDC_ERR_CLIENT_REVOKED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_LOGON_HOURS)) + ret = KRB5KDC_ERR_CLIENT_REVOKED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_ACCOUNT_LOCKED_OUT)) + ret = KRB5KDC_ERR_CLIENT_REVOKED; + else if (NT_STATUS_EQUAL(nt_status, NT_STATUS_INVALID_WORKSTATION)) + ret = KRB5KDC_ERR_POLICY; + else + ret = KRB5KDC_ERR_POLICY; + + samba_kdc_build_edata_reply(tmp_ctx, e_data, nt_status); + } + + return ret; +} + +static krb5_error_code samba_wdc_plugin_init(krb5_context context, void **ptr) +{ + *ptr = NULL; + return 0; +} + +static void samba_wdc_plugin_fini(void *ptr) +{ + return; +} + +struct krb5plugin_windc_ftable windc_plugin_table = { + .minor_version = KRB5_WINDC_PLUGING_MINOR, + .init = samba_wdc_plugin_init, + .fini = samba_wdc_plugin_fini, + .pac_generate = samba_wdc_get_pac, + .pac_verify = samba_wdc_reget_pac, + .client_access = samba_wdc_check_client_access, +}; + + |