first public release of samba4 code

(This used to be commit b0510b5428b3461aeb9bbe3cc95f62fc73e2b97f)

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