| 1 | /*
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| 2 | Unix SMB/CIFS implementation.
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| 3 | dump the remote SAM using rpc samsync operations
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| 4 |
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| 5 | Copyright (C) Guenther Deschner 2008.
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| 6 |
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| 7 | This program is free software; you can redistribute it and/or modify
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| 8 | it under the terms of the GNU General Public License as published by
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| 9 | the Free Software Foundation; either version 3 of the License, or
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| 10 | (at your option) any later version.
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| 11 |
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| 12 | This program is distributed in the hope that it will be useful,
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| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 15 | GNU General Public License for more details.
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| 16 |
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| 17 | You should have received a copy of the GNU General Public License
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| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>.
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| 19 | */
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| 20 |
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| 21 | #include "includes.h"
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| 22 | #include "smb_krb5.h"
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| 23 | #include "ads.h"
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| 24 | #include "libnet/libnet_keytab.h"
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| 25 | #include "libnet/libnet_samsync.h"
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| 26 | #include "krb5_env.h"
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| 27 |
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| 28 | #if defined(HAVE_ADS)
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| 29 |
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| 30 | /****************************************************************
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| 31 | ****************************************************************/
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| 32 |
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| 33 | static NTSTATUS keytab_ad_connect(TALLOC_CTX *mem_ctx,
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| 34 | const char *domain_name,
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| 35 | const char *dc,
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| 36 | const char *username,
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| 37 | const char *password,
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| 38 | struct libnet_keytab_context *ctx)
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| 39 | {
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| 40 | ADS_STATUS ad_status;
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| 41 | ADS_STRUCT *ads;
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| 42 |
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| 43 | ads = ads_init(NULL, domain_name, dc);
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| 44 | NT_STATUS_HAVE_NO_MEMORY(ads);
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| 45 |
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| 46 | if (getenv(KRB5_ENV_CCNAME) == NULL) {
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| 47 | setenv(KRB5_ENV_CCNAME, "MEMORY:libnet_samsync_keytab", 1);
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| 48 | }
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| 49 |
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| 50 | ads->auth.user_name = SMB_STRDUP(username);
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| 51 | ads->auth.password = SMB_STRDUP(password);
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| 52 |
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| 53 | ad_status = ads_connect_user_creds(ads);
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| 54 | if (!ADS_ERR_OK(ad_status)) {
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| 55 | return NT_STATUS_UNSUCCESSFUL;
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| 56 | }
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| 57 |
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| 58 | ctx->ads = ads;
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| 59 |
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| 60 | ctx->dns_domain_name = talloc_strdup_upper(mem_ctx, ads->config.realm);
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| 61 | NT_STATUS_HAVE_NO_MEMORY(ctx->dns_domain_name);
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| 62 |
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| 63 | return NT_STATUS_OK;
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| 64 | }
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| 65 |
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| 66 | /****************************************************************
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| 67 | ****************************************************************/
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| 68 |
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| 69 | static NTSTATUS fetch_sam_entry_keytab(TALLOC_CTX *mem_ctx,
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| 70 | enum netr_SamDatabaseID database_id,
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| 71 | uint32_t rid,
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| 72 | struct netr_DELTA_USER *r,
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| 73 | struct libnet_keytab_context *ctx)
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| 74 | {
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| 75 | NTSTATUS status;
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| 76 | uint32_t kvno = 0;
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| 77 | DATA_BLOB blob;
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| 78 |
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| 79 | if (memcmp(r->ntpassword.hash, ctx->zero_buf, 16) == 0) {
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| 80 | return NT_STATUS_OK;
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| 81 | }
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| 82 |
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| 83 | kvno = ads_get_kvno(ctx->ads, r->account_name.string);
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| 84 | blob = data_blob_const(r->ntpassword.hash, 16);
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| 85 |
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| 86 | status = libnet_keytab_add_to_keytab_entries(mem_ctx, ctx,
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| 87 | kvno,
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| 88 | r->account_name.string,
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| 89 | NULL,
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| 90 | ENCTYPE_ARCFOUR_HMAC,
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| 91 | blob);
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| 92 | if (!NT_STATUS_IS_OK(status)) {
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| 93 | return status;
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| 94 | }
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| 95 |
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| 96 | return NT_STATUS_OK;
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| 97 | }
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| 98 |
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| 99 | /****************************************************************
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| 100 | ****************************************************************/
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| 101 |
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| 102 | static NTSTATUS init_keytab(TALLOC_CTX *mem_ctx,
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| 103 | struct samsync_context *ctx,
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| 104 | enum netr_SamDatabaseID database_id,
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| 105 | uint64_t *sequence_num)
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| 106 | {
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| 107 | krb5_error_code ret = 0;
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| 108 | NTSTATUS status;
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| 109 | struct libnet_keytab_context *keytab_ctx = NULL;
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| 110 | struct libnet_keytab_entry *entry;
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