/* Unix SMB/CIFS implementation. dump the remote SAM using rpc samsync operations Copyright (C) Guenther Deschner 2008. 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 "libnet/libnet.h" #if defined(HAVE_ADS) && defined(ENCTYPE_ARCFOUR_HMAC) /**************************************************************** ****************************************************************/ static NTSTATUS keytab_ad_connect(TALLOC_CTX *mem_ctx, const char *domain_name, const char *username, const char *password, struct libnet_keytab_context *ctx) { NTSTATUS status; ADS_STATUS ad_status; ADS_STRUCT *ads; struct netr_DsRGetDCNameInfo *info = NULL; const char *dc; status = dsgetdcname(mem_ctx, NULL, domain_name, NULL, NULL, 0, &info); if (!NT_STATUS_IS_OK(status)) { return status; } dc = strip_hostname(info->dc_unc); ads = ads_init(NULL, domain_name, dc); NT_STATUS_HAVE_NO_MEMORY(ads); if (getenv(KRB5_ENV_CCNAME) == NULL) { setenv(KRB5_ENV_CCNAME, "MEMORY:libnet_samsync_keytab", 1); } ads->auth.user_name = SMB_STRDUP(username); ads->auth.password = SMB_STRDUP(password); ad_status = ads_connect_user_creds(ads); if (!ADS_ERR_OK(ad_status)) { return NT_STATUS_UNSUCCESSFUL; } ctx->ads = ads; ctx->dns_domain_name = talloc_strdup_upper(mem_ctx, ads->config.realm); NT_STATUS_HAVE_NO_MEMORY(ctx->dns_domain_name); return NT_STATUS_OK; } /**************************************************************** ****************************************************************/ static NTSTATUS fetch_sam_entry_keytab(TALLOC_CTX *mem_ctx, enum netr_SamDatabaseID database_id, uint32_t rid, struct netr_DELTA_USER *r, bool last_query, struct libnet_keytab_context *ctx) { uchar nt_passwd[16]; struct libnet_keytab_entry entry; if (memcmp(r->ntpassword.hash, ctx->zero_buf, 16) == 0) { return NT_STATUS_OK; } sam_pwd_hash(rid, r->ntpassword.hash, nt_passwd, 0); entry.name = talloc_strdup(mem_ctx, r->account_name.string); entry.principal = talloc_asprintf(mem_ctx, "%s@%s", r->account_name.string, ctx->dns_domain_name); entry.password = data_blob_talloc(mem_ctx, nt_passwd, 16); entry.kvno = ads_get_kvno(ctx->ads, entry.name); NT_STATUS_HAVE_NO_MEMORY(entry.name); NT_STATUS_HAVE_NO_MEMORY(entry.principal); NT_STATUS_HAVE_NO_MEMORY(entry.password.data); ADD_TO_ARRAY(mem_ctx, struct libnet_keytab_entry, entry, &ctx->entries, &ctx->count); return NT_STATUS_OK; } /**************************************************************** ****************************************************************/ NTSTATUS fetch_sam_entries_keytab(TALLOC_CTX *mem_ctx, enum netr_SamDatabaseID database_id, struct netr_DELTA_ENUM_ARRAY *r, bool last_query, struct samsync_context *ctx) { NTSTATUS status = NT_STATUS_OK; krb5_error_code ret = 0; static struct libnet_keytab_context *keytab_ctx = NULL; int i; if (!keytab_ctx) { ret = libnet_keytab_init(mem_ctx, ctx->output_filename, &keytab_ctx); if (ret) { status = krb5_to_nt_status(ret); goto out; } } status = keytab_ad_connect(mem_ctx, ctx->domain_name, ctx->username, ctx->password, keytab_ctx); if (!NT_STATUS_IS_OK(status)) { goto out; } for (i = 0; i < r->num_deltas; i++) { if (r->delta_enum[i].delta_type != NETR_DELTA_USER) { continue; } status = fetch_sam_entry_keytab(mem_ctx, database_id, r->delta_enum[i].delta_id_union.rid, r->delta_enum[i].delta_union.user, last_query, keytab_ctx); if (!NT_STATUS_IS_OK(status)) { goto out; } } if (last_query) { ret = libnet_keytab_add(keytab_ctx); if (ret) { status = krb5_to_nt_status(ret); ctx->error_message = talloc_asprintf(mem_ctx, "Failed to add entries to keytab %s: %s", keytab_ctx->keytab_name, error_message(ret)); goto out; } ctx->result_message = talloc_asprintf(mem_ctx, "Vampired %d accounts to keytab %s", keytab_ctx->count, keytab_ctx->keytab_name); TALLOC_FREE(keytab_ctx); } return NT_STATUS_OK; out: TALLOC_FREE(keytab_ctx); return status; } #else NTSTATUS fetch_sam_entries_keytab(TALLOC_CTX *mem_ctx, enum netr_SamDatabaseID database_id, struct netr_DELTA_ENUM_ARRAY *r, bool last_query, struct samsync_context *ctx) { return NT_STATUS_NOT_SUPPORTED; } #endif /* defined(HAVE_ADS) && defined(ENCTYPE_ARCFOUR_HMAC) */