providers/ad/ad_pac_common.c

63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose/*
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    SSSD
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    Authors:
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        Sumit Bose <sbose@redhat.com>
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    Copyright (C) 2016 Red Hat
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    This program is free software; you can redistribute it and/or modify
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    it under the terms of the GNU General Public License as published by
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    the Free Software Foundation; either version 3 of the License, or
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    (at your option) any later version.
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    This program is distributed in the hope that it will be useful,
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    but WITHOUT ANY WARRANTY; without even the implied warranty of
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    GNU General Public License for more details.
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    You should have received a copy of the GNU General Public License
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    along with this program.  If not, see <http://www.gnu.org/licenses/>.
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose*/
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose#include "providers/ad/ad_pac.h"
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose#include "util/util.h"
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Boseerrno_t ad_get_data_from_pac(TALLOC_CTX *mem_ctx,
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose                             uint8_t *pac_blob, size_t pac_len,
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose                             struct PAC_LOGON_INFO **_logon_info)
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose{
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    DATA_BLOB blob;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    struct ndr_pull *ndr_pull;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    struct PAC_DATA *pac_data;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    enum ndr_err_code ndr_err;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    size_t c;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    int ret;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    TALLOC_CTX *tmp_ctx;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    tmp_ctx = talloc_new(NULL);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    if (tmp_ctx == NULL) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        DEBUG(SSSDBG_OP_FAILURE, "talloc_new failed.\n");
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        return ENOMEM;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    blob.data = pac_blob;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    blob.length = pac_len;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    ndr_pull = ndr_pull_init_blob(&blob, tmp_ctx);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    if (ndr_pull == NULL) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        DEBUG(SSSDBG_OP_FAILURE, "ndr_pull_init_blob failed.\n");
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        ret = ENOMEM;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        goto done;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    ndr_pull->flags |= LIBNDR_FLAG_REF_ALLOC; /* FIXME: is this really needed ? */
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    pac_data = talloc_zero(tmp_ctx, struct PAC_DATA);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    if (pac_data == NULL) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        DEBUG(SSSDBG_OP_FAILURE, "talloc_zero failed.\n");
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        ret = ENOMEM;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        goto done;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    ndr_err = ndr_pull_PAC_DATA(ndr_pull, NDR_SCALARS|NDR_BUFFERS, pac_data);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        DEBUG(SSSDBG_OP_FAILURE, "ndr_pull_PAC_DATA failed [%d]\n", ndr_err);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        ret =  EBADMSG;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        goto done;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    for(c = 0; c < pac_data->num_buffers; c++) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        if (pac_data->buffers[c].type == PAC_TYPE_LOGON_INFO) {
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose            *_logon_info = talloc_steal(mem_ctx,
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose                                    pac_data->buffers[c].info->logon_info.info);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose            ret = EOK;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose            goto done;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose        }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    }
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    ret = EINVAL;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bosedone:
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    talloc_free(tmp_ctx);
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose    return ret;
63b8e826f62d2e8930c872de7d4cc8b5bc15d4a4Sumit Bose}