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Diffstat (limited to 'source4/utils/net_ads_cldap.c')
-rw-r--r--source4/utils/net_ads_cldap.c354
1 files changed, 354 insertions, 0 deletions
diff --git a/source4/utils/net_ads_cldap.c b/source4/utils/net_ads_cldap.c
new file mode 100644
index 0000000000..132238533d
--- /dev/null
+++ b/source4/utils/net_ads_cldap.c
@@ -0,0 +1,354 @@
+/*
+ Samba Unix/Linux SMB client library
+ net ads cldap functions
+ Copyright (C) 2001 Andrew Tridgell (tridge@samba.org)
+ Copyright (C) 2003 Jim McDonough (jmcd@us.ibm.com)
+
+ 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 2 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, write to the Free Software
+ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+#include "../utils/net.h"
+
+#ifdef HAVE_ADS
+
+struct netlogon_string {
+ uint32 comp_len;
+ char **component;
+ uint8 extra_flag;
+};
+
+struct cldap_netlogon_reply {
+ uint32 type;
+ uint32 flags;
+ GUID guid;
+
+ struct netlogon_string forest;
+ struct netlogon_string domain;
+ struct netlogon_string hostname;
+
+ struct netlogon_string netbios_domain;
+ struct netlogon_string netbios_hostname;
+
+ struct netlogon_string user_name;
+ struct netlogon_string site_name;
+
+ struct netlogon_string unk0;
+
+ uint32 version;
+ uint16 lmnt_token;
+ uint16 lm20_token;
+};
+
+/*
+ These strings are rather interesting... They are composed of a series of
+ length encoded strings, terminated by either 1) a zero length string or 2)
+ a 0xc0 byte with what appears to be a one byte flags immediately following.
+*/
+static unsigned pull_netlogon_string(struct netlogon_string *ret,const char *d)
+{
+ char *p = (char *)d;
+
+ ZERO_STRUCTP(ret);
+
+ do {
+ unsigned len = (unsigned char)*p;
+ p++;
+
+ if (len > 0 && len != 0xc0) {
+ ret->component = realloc(ret->component,
+ ++ret->comp_len *
+ sizeof(char *));
+
+ ret->component[ret->comp_len - 1] =
+ smb_xstrndup(p, len);
+ p += len;
+ } else {
+ if (len == 0xc0) {
+ ret->extra_flag = *p;
+ p++;
+ };
+ break;
+ }
+ } while (1);
+
+ return (p - d);
+}
+
+/*
+ do a cldap netlogon query
+*/
+static int send_cldap_netlogon(int sock, const char *domain,
+ const char *hostname, unsigned ntversion)
+{
+ ASN1_DATA data;
+ char ntver[4];
+
+ SIVAL(ntver, 0, ntversion);
+
+ memset(&data, 0, sizeof(data));
+
+ asn1_push_tag(&data,ASN1_SEQUENCE(0));
+ asn1_write_Integer(&data, 4);
+ asn1_push_tag(&data, ASN1_APPLICATION(3));
+ asn1_write_OctetString(&data, NULL, 0);
+ asn1_write_enumerated(&data, 0);
+ asn1_write_enumerated(&data, 0);
+ asn1_write_Integer(&data, 0);
+ asn1_write_Integer(&data, 0);
+ asn1_write_BOOLEAN2(&data, False);
+ asn1_push_tag(&data, ASN1_CONTEXT(0));
+
+ asn1_push_tag(&data, ASN1_CONTEXT(3));
+ asn1_write_OctetString(&data, "DnsDomain", 9);
+ asn1_write_OctetString(&data, domain, strlen(domain));
+ asn1_pop_tag(&data);
+
+ asn1_push_tag(&data, ASN1_CONTEXT(3));
+ asn1_write_OctetString(&data, "Host", 4);
+ asn1_write_OctetString(&data, hostname, strlen(hostname));
+ asn1_pop_tag(&data);
+
+ asn1_push_tag(&data, ASN1_CONTEXT(3));
+ asn1_write_OctetString(&data, "NtVer", 5);
+ asn1_write_OctetString(&data, ntver, 4);
+ asn1_pop_tag(&data);
+
+ asn1_pop_tag(&data);
+
+ asn1_push_tag(&data,ASN1_SEQUENCE(0));
+ asn1_write_OctetString(&data, "NetLogon", 8);
+ asn1_pop_tag(&data);
+ asn1_pop_tag(&data);
+ asn1_pop_tag(&data);
+
+ if (data.has_error) {
+ d_printf("Failed to build cldap netlogon at offset %d\n", (int)data.ofs);
+ asn1_free(&data);
+ return -1;
+ }
+
+ if (write(sock, data.data, data.length) != data.length) {
+ d_printf("failed to send cldap query (%s)\n", strerror(errno));
+ }
+
+ file_save("cldap_query.dat", data.data, data.length);
+ asn1_free(&data);
+
+ return 0;
+}
+
+
+/*
+ receive a cldap netlogon reply
+*/
+static int recv_cldap_netlogon(int sock, struct cldap_netlogon_reply *reply)
+{
+ int ret;
+ ASN1_DATA data;
+ DATA_BLOB blob;
+ DATA_BLOB os1, os2, os3;
+ uint32 i1;
+ char *p;
+
+ blob = data_blob(NULL, 8192);
+
+ ret = read(sock, blob.data, blob.length);
+
+ if (ret <= 0) {
+ d_printf("no reply received to cldap netlogon\n");
+ return -1;
+ }
+ blob.length = ret;
+
+ file_save("cldap_reply.dat", blob.data, blob.length);
+
+ asn1_load(&data, blob);
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_read_Integer(&data, &i1);
+ asn1_start_tag(&data, ASN1_APPLICATION(4));
+ asn1_read_OctetString(&data, &os1);
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_start_tag(&data, ASN1_SEQUENCE(0));
+ asn1_read_OctetString(&data, &os2);
+ asn1_start_tag(&data, ASN1_SET);
+ asn1_read_OctetString(&data, &os3);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+ asn1_end_tag(&data);
+
+ if (data.has_error) {
+ d_printf("Failed to parse cldap reply\n");
+ return -1;
+ }
+
+ file_save("cldap_reply_core.dat", os3.data, os3.length);
+
+ p = os3.data;
+
+ reply->type = IVAL(p, 0); p += 4;
+ reply->flags = IVAL(p, 0); p += 4;
+
+ memcpy(&reply->guid.info, p, GUID_SIZE);
+ p += GUID_SIZE;
+
+ p += pull_netlogon_string(&reply->forest, p);
+ p += pull_netlogon_string(&reply->domain, p);
+ p += pull_netlogon_string(&reply->hostname, p);
+ p += pull_netlogon_string(&reply->netbios_domain, p);
+ p += pull_netlogon_string(&reply->netbios_hostname, p);
+ p += pull_netlogon_string(&reply->user_name, p);
+ p += pull_netlogon_string(&reply->site_name, p);
+
+ p += pull_netlogon_string(&reply->unk0, p);
+
+ reply->version = IVAL(p, 0);
+ reply->lmnt_token = SVAL(p, 4);
+ reply->lm20_token = SVAL(p, 6);
+
+ data_blob_free(&os1);
+ data_blob_free(&os2);
+ data_blob_free(&os3);
+ data_blob_free(&blob);
+
+ return 0;
+}
+
+/*
+ free a netlogon string
+*/
+static void netlogon_string_free(struct netlogon_string *str)
+{
+ int i;
+
+ for (i = 0; i < str->comp_len; ++i) {
+ SAFE_FREE(str->component[i]);
+ }
+ SAFE_FREE(str->component);
+}
+
+/*
+ free a cldap reply packet
+*/
+static void cldap_reply_free(struct cldap_netlogon_reply *reply)
+{
+ netlogon_string_free(&reply->forest);
+ netlogon_string_free(&reply->domain);
+ netlogon_string_free(&reply->hostname);
+ netlogon_string_free(&reply->netbios_domain);
+ netlogon_string_free(&reply->netbios_hostname);
+ netlogon_string_free(&reply->user_name);
+ netlogon_string_free(&reply->site_name);
+ netlogon_string_free(&reply->unk0);
+}
+
+static void d_print_netlogon_string(const char *label,
+ struct netlogon_string *str)
+{
+ int i;
+
+ if (str->comp_len) {
+ d_printf("%s", label);
+ if (str->extra_flag) {
+ d_printf("[%d]", str->extra_flag);
+ }
+ d_printf(": ");
+ for (i = 0; i < str->comp_len; ++i) {
+ d_printf("%s%s", (i ? "." : ""), str->component[i]);
+ }
+ d_printf("\n");
+ }
+}
+
+/*
+ do a cldap netlogon query
+*/
+int ads_cldap_netlogon(ADS_STRUCT *ads)
+{
+ int sock;
+ int ret;
+ struct cldap_netlogon_reply reply;
+
+ sock = open_udp_socket(inet_ntoa(ads->ldap_ip), ads->ldap_port);
+ if (sock == -1) {
+ d_printf("Failed to open udp socket to %s:%u\n",
+ inet_ntoa(ads->ldap_ip),
+ ads->ldap_port);
+ return -1;
+ }
+
+ ret = send_cldap_netlogon(sock, ads->config.realm, lp_netbios_name(), 6);
+ if (ret != 0) {
+ return ret;
+ }
+ ret = recv_cldap_netlogon(sock, &reply);
+ close(sock);
+
+ if (ret == -1) {
+ return -1;
+ }
+
+ d_printf("Information for Domain Controller: %s\n\n",
+ ads->config.ldap_server_name);
+
+ d_printf("Response Type: 0x%x\n", reply.type);
+ d_printf("GUID: ");
+ print_guid(&reply.guid);
+ d_printf("Flags:\n"
+ "\tIs a PDC: %s\n"
+ "\tIs a GC of the forest: %s\n"
+ "\tIs an LDAP server: %s\n"
+ "\tSupports DS: %s\n"
+ "\tIs running a KDC: %s\n"
+ "\tIs running time services: %s\n"
+ "\tIs the closest DC: %s\n"
+ "\tIs writable: %s\n"
+ "\tHas a hardware clock: %s\n"
+ "\tIs a non-domain NC serviced by LDAP server: %s\n",
+ (reply.flags & ADS_PDC) ? "yes" : "no",
+ (reply.flags & ADS_GC) ? "yes" : "no",
+ (reply.flags & ADS_LDAP) ? "yes" : "no",
+ (reply.flags & ADS_DS) ? "yes" : "no",
+ (reply.flags & ADS_KDC) ? "yes" : "no",
+ (reply.flags & ADS_TIMESERV) ? "yes" : "no",
+ (reply.flags & ADS_CLOSEST) ? "yes" : "no",
+ (reply.flags & ADS_WRITABLE) ? "yes" : "no",
+ (reply.flags & ADS_GOOD_TIMESERV) ? "yes" : "no",
+ (reply.flags & ADS_NDNC) ? "yes" : "no");
+
+ d_print_netlogon_string("Forest", &reply.forest);
+ d_print_netlogon_string("Domain", &reply.domain);
+ d_print_netlogon_string("Hostname", &reply.hostname);
+
+ d_print_netlogon_string("Pre-Win2k Domain", &reply.netbios_domain);
+ d_print_netlogon_string("Pre-Win2k Hostname", &reply.netbios_hostname);
+
+ d_print_netlogon_string("User name", &reply.user_name);
+ d_print_netlogon_string("Site Name", &reply.site_name);
+ d_print_netlogon_string("Unknown Field", &reply.unk0);
+
+ d_printf("NT Version: %d\n", reply.version);
+ d_printf("LMNT Token: %.2x\n", reply.lmnt_token);
+ d_printf("LM20 Token: %.2x\n", reply.lm20_token);
+
+ cldap_reply_free(&reply);
+
+ return ret;
+}
+
+
+#endif
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