diff options
Diffstat (limited to 'source3/libnet/libnet_samsync_keytab.c')
| -rw-r--r-- | source3/libnet/libnet_samsync_keytab.c | 193 |
1 files changed, 193 insertions, 0 deletions
diff --git a/source3/libnet/libnet_samsync_keytab.c b/source3/libnet/libnet_samsync_keytab.c new file mode 100644 index 0000000000..f284f08ad9 --- /dev/null +++ b/source3/libnet/libnet_samsync_keytab.c @@ -0,0 +1,193 @@ +/* + 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) */ |