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
+ 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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
+extern struct auth_context *negprot_global_auth_context;
+extern BOOL global_encrypted_passwords_negotiated;
+extern BOOL global_spnego_negotiated;
+extern enum protocol_types Protocol;
+extern int max_send;
+
uint32 global_client_caps = 0;
/*
Send a security blob via a session setup reply.
****************************************************************************/
-static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf,
- DATA_BLOB blob, NTSTATUS nt_status)
+static BOOL reply_sesssetup_blob(connection_struct *conn,
+ const char *inbuf,
+ char *outbuf,
+ DATA_BLOB blob,
+ NTSTATUS nt_status)
{
char *p;
- set_message(outbuf,4,0,True);
+ if (!NT_STATUS_IS_OK(nt_status) && !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ ERROR_NT(nt_status_squash(nt_status));
+ } else {
+ set_message(inbuf,outbuf,4,0,True);
- nt_status = nt_status_squash(nt_status);
- SIVAL(outbuf, smb_rcls, NT_STATUS_V(nt_status));
- SSVAL(outbuf, smb_vwv0, 0xFF); /* no chaining possible */
- SSVAL(outbuf, smb_vwv3, blob.length);
- p = smb_buf(outbuf);
+ nt_status = nt_status_squash(nt_status);
+ SIVAL(outbuf, smb_rcls, NT_STATUS_V(nt_status));
+ SSVAL(outbuf, smb_vwv0, 0xFF); /* no chaining possible */
+ SSVAL(outbuf, smb_vwv3, blob.length);
+ p = smb_buf(outbuf);
- /* should we cap this? */
- memcpy(p, blob.data, blob.length);
- p += blob.length;
+ /* should we cap this? */
+ memcpy(p, blob.data, blob.length);
+ p += blob.length;
- p += add_signature( outbuf, p );
+ p += add_signature( outbuf, p );
- set_message_end(outbuf,p);
+ set_message_end(inbuf,outbuf,p);
+ }
show_msg(outbuf);
return send_smb(smbd_server_fd(),outbuf);
#ifdef HAVE_KRB5
+
+#if 0
+/* Experiment that failed. See "only happens with a KDC" comment below. */
+/****************************************************************************
+ Cerate a clock skew error blob for a Windows client.
+****************************************************************************/
+
+static BOOL make_krb5_skew_error(DATA_BLOB *pblob_out)
+{
+ krb5_context context = NULL;
+ krb5_error_code kerr = 0;
+ krb5_data reply;
+ krb5_principal host_princ = NULL;
+ char *host_princ_s = NULL;
+ BOOL ret = False;
+
+ *pblob_out = data_blob_null;
+
+ initialize_krb5_error_table();
+ kerr = krb5_init_context(&context);
+ if (kerr) {
+ return False;
+ }
+ /* Create server principal. */
+ asprintf(&host_princ_s, "%s$@%s", global_myname(), lp_realm());
+ if (!host_princ_s) {
+ goto out;
+ }
+ strlower_m(host_princ_s);
+
+ kerr = smb_krb5_parse_name(context, host_princ_s, &host_princ);
+ if (kerr) {
+ DEBUG(10,("make_krb5_skew_error: smb_krb5_parse_name failed for name %s: Error %s\n",
+ host_princ_s, error_message(kerr) ));
+ goto out;
+ }
+
+ kerr = smb_krb5_mk_error(context, KRB5KRB_AP_ERR_SKEW, host_princ, &reply);
+ if (kerr) {
+ DEBUG(10,("make_krb5_skew_error: smb_krb5_mk_error failed: Error %s\n",
+ error_message(kerr) ));
+ goto out;
+ }
+
+ *pblob_out = data_blob(reply.data, reply.length);
+ kerberos_free_data_contents(context,&reply);
+ ret = True;
+
+ out:
+
+ if (host_princ_s) {
+ SAFE_FREE(host_princ_s);
+ }
+ if (host_princ) {
+ krb5_free_principal(context, host_princ);
+ }
+ krb5_free_context(context);
+ return ret;
+}
+#endif
+
/****************************************************************************
-reply to a session setup spnego negotiate packet for kerberos
+ Reply to a session setup spnego negotiate packet for kerberos.
****************************************************************************/
+
static int reply_spnego_kerberos(connection_struct *conn,
char *inbuf, char *outbuf,
int length, int bufsize,
- DATA_BLOB *secblob)
+ DATA_BLOB *secblob,
+ BOOL *p_invalidate_vuid)
{
TALLOC_CTX *mem_ctx;
DATA_BLOB ticket;
PAC_DATA *pac_data;
DATA_BLOB ap_rep, ap_rep_wrapped, response;
auth_serversupplied_info *server_info = NULL;
- DATA_BLOB session_key = data_blob(NULL, 0);
+ DATA_BLOB session_key = data_blob_null;
uint8 tok_id[2];
- DATA_BLOB nullblob = data_blob(NULL, 0);
+ DATA_BLOB nullblob = data_blob_null;
fstring real_username;
BOOL map_domainuser_to_guest = False;
+ BOOL username_was_mapped;
PAC_LOGON_INFO *logon_info = NULL;
ZERO_STRUCT(ticket);
ZERO_STRUCT(ap_rep_wrapped);
ZERO_STRUCT(response);
+ /* Normally we will always invalidate the intermediate vuid. */
+ *p_invalidate_vuid = True;
+
mem_ctx = talloc_init("reply_spnego_kerberos");
- if (mem_ctx == NULL)
- return ERROR_NT(NT_STATUS_NO_MEMORY);
+ if (mem_ctx == NULL) {
+ return ERROR_NT(nt_status_squash(NT_STATUS_NO_MEMORY));
+ }
if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) {
talloc_destroy(mem_ctx);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
- ret = ads_verify_ticket(mem_ctx, lp_realm(), &ticket, &client, &pac_data, &ap_rep, &session_key);
+ ret = ads_verify_ticket(mem_ctx, lp_realm(), 0, &ticket,
+ &client, &pac_data, &ap_rep,
+ &session_key, True);
data_blob_free(&ticket);
if (!NT_STATUS_IS_OK(ret)) {
- DEBUG(1,("Failed to verify incoming ticket!\n"));
+#if 0
+ /* Experiment that failed. See "only happens with a KDC" comment below. */
+
+ if (NT_STATUS_EQUAL(ret, NT_STATUS_TIME_DIFFERENCE_AT_DC)) {
+
+ /*
+ * Windows in this case returns NT_STATUS_MORE_PROCESSING_REQUIRED
+ * with a negTokenTarg blob containing an krb5_error struct ASN1 encoded
+ * containing KRB5KRB_AP_ERR_SKEW. The client then fixes its
+ * clock and continues rather than giving an error. JRA.
+ * -- Looks like this only happens with a KDC. JRA.
+ */
+
+ BOOL ok = make_krb5_skew_error(&ap_rep);
+ if (!ok) {
+ talloc_destroy(mem_ctx);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ }
+ ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep, TOK_ID_KRB_ERROR);
+ response = spnego_gen_auth_response(&ap_rep_wrapped, ret, OID_KERBEROS5_OLD);
+ reply_sesssetup_blob(conn, inbuf, outbuf, response, NT_STATUS_MORE_PROCESSING_REQUIRED);
+
+ /*
+ * In this one case we don't invalidate the intermediate vuid.
+ * as we're expecting the client to re-use it for the next
+ * sessionsetupX packet. JRA.
+ */
+
+ *p_invalidate_vuid = False;
+
+ data_blob_free(&ap_rep);
+ data_blob_free(&ap_rep_wrapped);
+ data_blob_free(&response);
+ talloc_destroy(mem_ctx);
+ return -1; /* already replied */
+ }
+#else
+ if (!NT_STATUS_EQUAL(ret, NT_STATUS_TIME_DIFFERENCE_AT_DC)) {
+ ret = NT_STATUS_LOGON_FAILURE;
+ }
+#endif
+ DEBUG(1,("Failed to verify incoming ticket with error %s!\n", nt_errstr(ret)));
talloc_destroy(mem_ctx);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(ret));
}
DEBUG(3,("Ticket name is [%s]\n", client));
data_blob_free(&session_key);
SAFE_FREE(client);
talloc_destroy(mem_ctx);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
*p = 0;
if (pac_data) {
logon_info = get_logon_info_from_pac(pac_data);
- netsamlogon_cache_store( client, &logon_info->info3 );
+ if (logon_info) {
+ netsamlogon_cache_store( client, &logon_info->info3 );
+ }
}
if (!strequal(p+1, lp_realm())) {
data_blob_free(&session_key);
SAFE_FREE(client);
talloc_destroy(mem_ctx);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
}
/* lookup the passwd struct, create a new user if necessary */
- map_username( user );
+ username_was_mapped = map_username( user );
pw = smb_getpwnam( mem_ctx, user, real_username, True );
+
+ if (pw) {
+ /* if a real user check pam account restrictions */
+ /* only really perfomed if "obey pam restriction" is true */
+ /* do this before an eventual mappign to guest occurs */
+ ret = smb_pam_accountcheck(pw->pw_name);
+ if ( !NT_STATUS_IS_OK(ret)) {
+ DEBUG(1, ("PAM account restriction prevents user login\n"));
+ data_blob_free(&ap_rep);
+ data_blob_free(&session_key);
+ TALLOC_FREE(mem_ctx);
+ return ERROR_NT(nt_status_squash(ret));
+ }
+ }
+
if (!pw) {
/* this was originally the behavior of Samba 2.2, if a user
SAFE_FREE(client);
data_blob_free(&ap_rep);
data_blob_free(&session_key);
- talloc_destroy(mem_ctx);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ TALLOC_FREE(mem_ctx);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
}
sub_set_smb_name( real_username );
reload_services(True);
+
if ( map_domainuser_to_guest ) {
make_server_info_guest(&server_info);
} else if (logon_info) {
- ret = make_server_info_info3(mem_ctx, real_username, real_username, domain,
+ /* pass the unmapped username here since map_username()
+ will be called again from inside make_server_info_info3() */
+
+ ret = make_server_info_info3(mem_ctx, client, domain,
&server_info, &logon_info->info3);
if ( !NT_STATUS_IS_OK(ret) ) {
DEBUG(1,("make_server_info_info3 failed: %s!\n",
SAFE_FREE(client);
data_blob_free(&ap_rep);
data_blob_free(&session_key);
- talloc_destroy(mem_ctx);
- return ERROR_NT(ret);
+ TALLOC_FREE(mem_ctx);
+ return ERROR_NT(nt_status_squash(ret));
}
} else {
SAFE_FREE(client);
data_blob_free(&ap_rep);
data_blob_free(&session_key);
- talloc_destroy(mem_ctx);
- return ERROR_NT(ret);
+ TALLOC_FREE(mem_ctx);
+ return ERROR_NT(nt_status_squash(ret));
}
/* make_server_info_pw does not set the domain. Without this
pdb_set_domain(server_info->sam_account, domain, PDB_SET);
}
}
+
+ server_info->was_mapped |= username_was_mapped;
/* we need to build the token for the user. make_server_info_guest()
already does this */
data_blob_free(&session_key);
TALLOC_FREE( mem_ctx );
TALLOC_FREE( server_info );
- return ERROR_NT(ret);
+ return ERROR_NT(nt_status_squash(ret));
}
}
/* current_user_info is changed on new vuid */
reload_services( True );
- set_message(outbuf,4,0,True);
+ set_message(inbuf,outbuf,4,0,True);
SSVAL(outbuf, smb_vwv3, 0);
if (server_info->guest) {
if (NT_STATUS_IS_OK(ret)) {
ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep, TOK_ID_KRB_AP_REP);
} else {
- ap_rep_wrapped = data_blob(NULL, 0);
+ ap_rep_wrapped = data_blob_null;
}
response = spnego_gen_auth_response(&ap_rep_wrapped, ret, OID_KERBEROS5_OLD);
- reply_sesssetup_blob(conn, outbuf, response, ret);
+ reply_sesssetup_blob(conn, inbuf, outbuf, response, ret);
data_blob_free(&ap_rep);
data_blob_free(&ap_rep_wrapped);
data_blob_free(&response);
- talloc_destroy(mem_ctx);
+ TALLOC_FREE(mem_ctx);
return -1; /* already replied */
}
if (NT_STATUS_IS_OK(nt_status)) {
int sess_vuid;
- DATA_BLOB nullblob = data_blob(NULL, 0);
+ DATA_BLOB nullblob = data_blob_null;
DATA_BLOB session_key = data_blob((*auth_ntlmssp_state)->ntlmssp_state->session_key.data, (*auth_ntlmssp_state)->ntlmssp_state->session_key.length);
/* register_vuid keeps the server info */
/* current_user_info is changed on new vuid */
reload_services( True );
- set_message(outbuf,4,0,True);
+ set_message(inbuf,outbuf,4,0,True);
SSVAL(outbuf, smb_vwv3, 0);
if (server_info->guest) {
response = *ntlmssp_blob;
}
- ret = reply_sesssetup_blob(conn, outbuf, response, nt_status);
+ ret = reply_sesssetup_blob(conn, inbuf, outbuf, response, nt_status);
if (wrap) {
data_blob_free(&response);
}
}
/****************************************************************************
- Reply to a session setup spnego negotiate packet.
+ Is this a krb5 mechanism ?
****************************************************************************/
-static int reply_spnego_negotiate(connection_struct *conn,
- char *inbuf,
- char *outbuf,
- uint16 vuid,
- int length, int bufsize,
- DATA_BLOB blob1,
- AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
+NTSTATUS parse_spnego_mechanisms(DATA_BLOB blob_in, DATA_BLOB *pblob_out, BOOL *p_is_krb5)
{
char *OIDs[ASN1_MAX_OIDS];
- DATA_BLOB secblob;
int i;
- DATA_BLOB chal;
-#ifdef HAVE_KRB5
- BOOL got_kerberos_mechanism = False;
-#endif
- NTSTATUS nt_status;
- /* parse out the OIDs and the first sec blob */
- if (!parse_negTokenTarg(blob1, OIDs, &secblob)) {
- /* Kill the intermediate vuid */
- invalidate_vuid(vuid);
+ *p_is_krb5 = False;
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ /* parse out the OIDs and the first sec blob */
+ if (!parse_negTokenTarg(blob_in, OIDs, pblob_out)) {
+ return NT_STATUS_LOGON_FAILURE;
}
/* only look at the first OID for determining the mechToken --
#ifdef HAVE_KRB5
if (strcmp(OID_KERBEROS5, OIDs[0]) == 0 ||
strcmp(OID_KERBEROS5_OLD, OIDs[0]) == 0) {
- got_kerberos_mechanism = True;
+ *p_is_krb5 = True;
}
#endif
for (i=0;OIDs[i];i++) {
- DEBUG(3,("Got OID %s\n", OIDs[i]));
+ DEBUG(5,("parse_spnego_mechanisms: Got OID %s\n", OIDs[i]));
free(OIDs[i]);
}
- DEBUG(3,("Got secblob of size %lu\n", (unsigned long)secblob.length));
+ return NT_STATUS_OK;
+}
+
+/****************************************************************************
+ Reply to a session setup spnego negotiate packet.
+****************************************************************************/
+
+static int reply_spnego_negotiate(connection_struct *conn,
+ char *inbuf,
+ char *outbuf,
+ uint16 vuid,
+ int length, int bufsize,
+ DATA_BLOB blob1,
+ AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
+{
+ DATA_BLOB secblob;
+ DATA_BLOB chal;
+ BOOL got_kerberos_mechanism = False;
+ NTSTATUS status;
+
+ status = parse_spnego_mechanisms(blob1, &secblob, &got_kerberos_mechanism);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ return ERROR_NT(nt_status_squash(status));
+ }
+
+ DEBUG(3,("reply_spnego_negotiate: Got secblob of size %lu\n", (unsigned long)secblob.length));
#ifdef HAVE_KRB5
if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
+ BOOL destroy_vuid = True;
int ret = reply_spnego_kerberos(conn, inbuf, outbuf,
- length, bufsize, &secblob);
+ length, bufsize, &secblob, &destroy_vuid);
data_blob_free(&secblob);
- /* Kill the intermediate vuid */
- invalidate_vuid(vuid);
-
+ if (destroy_vuid) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
return ret;
}
#endif
auth_ntlmssp_end(auth_ntlmssp_state);
}
- nt_status = auth_ntlmssp_start(auth_ntlmssp_state);
- if (!NT_STATUS_IS_OK(nt_status)) {
+ status = auth_ntlmssp_start(auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
/* Kill the intermediate vuid */
invalidate_vuid(vuid);
-
- return ERROR_NT(nt_status);
+ return ERROR_NT(nt_status_squash(status));
}
- nt_status = auth_ntlmssp_update(*auth_ntlmssp_state,
+ status = auth_ntlmssp_update(*auth_ntlmssp_state,
secblob, &chal);
data_blob_free(&secblob);
reply_spnego_ntlmssp(conn, inbuf, outbuf, vuid, auth_ntlmssp_state,
- &chal, nt_status, True);
+ &chal, status, True);
data_blob_free(&chal);
/* already replied */
return -1;
}
-
+
/****************************************************************************
Reply to a session setup spnego auth packet.
****************************************************************************/
DATA_BLOB blob1,
AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
{
- DATA_BLOB auth, auth_reply;
- NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
+ DATA_BLOB auth = data_blob_null;
+ DATA_BLOB auth_reply = data_blob_null;
+ DATA_BLOB secblob = data_blob_null;
+ NTSTATUS status = NT_STATUS_INVALID_PARAMETER;
if (!spnego_parse_auth(blob1, &auth)) {
#if 0
/* Kill the intermediate vuid */
invalidate_vuid(vuid);
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
+
+ if (auth.data[0] == ASN1_APPLICATION(0)) {
+ /* Might be a second negTokenTarg packet */
+
+ BOOL got_krb5_mechanism = False;
+ status = parse_spnego_mechanisms(auth, &secblob, &got_krb5_mechanism);
+ if (NT_STATUS_IS_OK(status)) {
+ DEBUG(3,("reply_spnego_auth: Got secblob of size %lu\n", (unsigned long)secblob.length));
+#ifdef HAVE_KRB5
+ if ( got_krb5_mechanism && ((lp_security()==SEC_ADS) || lp_use_kerberos_keytab()) ) {
+ BOOL destroy_vuid = True;
+ int ret = reply_spnego_kerberos(conn, inbuf, outbuf,
+ length, bufsize, &secblob, &destroy_vuid);
+ data_blob_free(&secblob);
+ data_blob_free(&auth);
+ if (destroy_vuid) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
+ return ret;
+ }
+#endif
+ }
+ }
+
+ /* If we get here it wasn't a negTokenTarg auth packet. */
+ data_blob_free(&secblob);
if (!*auth_ntlmssp_state) {
/* Kill the intermediate vuid */
invalidate_vuid(vuid);
/* auth before negotiatiate? */
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
- nt_status = auth_ntlmssp_update(*auth_ntlmssp_state,
+ status = auth_ntlmssp_update(*auth_ntlmssp_state,
auth, &auth_reply);
data_blob_free(&auth);
reply_spnego_ntlmssp(conn, inbuf, outbuf, vuid,
auth_ntlmssp_state,
- &auth_reply, nt_status, True);
+ &auth_reply, status, True);
data_blob_free(&auth_reply);
return -1;
}
+/****************************************************************************
+ List to store partial SPNEGO auth fragments.
+****************************************************************************/
+
+static struct pending_auth_data *pd_list;
+
+/****************************************************************************
+ Delete an entry on the list.
+****************************************************************************/
+
+static void delete_partial_auth(struct pending_auth_data *pad)
+{
+ if (!pad) {
+ return;
+ }
+ DLIST_REMOVE(pd_list, pad);
+ data_blob_free(&pad->partial_data);
+ SAFE_FREE(pad);
+}
+
+/****************************************************************************
+ Search for a partial SPNEGO auth fragment matching an smbpid.
+****************************************************************************/
+
+static struct pending_auth_data *get_pending_auth_data(uint16 smbpid)
+{
+ struct pending_auth_data *pad;
+
+ for (pad = pd_list; pad; pad = pad->next) {
+ if (pad->smbpid == smbpid) {
+ break;
+ }
+ }
+ return pad;
+}
+
+/****************************************************************************
+ Check the size of an SPNEGO blob. If we need more return NT_STATUS_MORE_PROCESSING_REQUIRED,
+ else return NT_STATUS_OK. Don't allow the blob to be more than 64k.
+****************************************************************************/
+
+static NTSTATUS check_spnego_blob_complete(uint16 smbpid, uint16 vuid, DATA_BLOB *pblob)
+{
+ struct pending_auth_data *pad = NULL;
+ ASN1_DATA data;
+ size_t needed_len = 0;
+
+ pad = get_pending_auth_data(smbpid);
+
+ /* Ensure we have some data. */
+ if (pblob->length == 0) {
+ /* Caller can cope. */
+ DEBUG(2,("check_spnego_blob_complete: zero blob length !\n"));
+ delete_partial_auth(pad);
+ return NT_STATUS_OK;
+ }
+
+ /* Were we waiting for more data ? */
+ if (pad) {
+ DATA_BLOB tmp_blob;
+ size_t copy_len = MIN(65536, pblob->length);
+
+ /* Integer wrap paranoia.... */
+
+ if (pad->partial_data.length + copy_len < pad->partial_data.length ||
+ pad->partial_data.length + copy_len < copy_len) {
+
+ DEBUG(2,("check_spnego_blob_complete: integer wrap "
+ "pad->partial_data.length = %u, "
+ "copy_len = %u\n",
+ (unsigned int)pad->partial_data.length,
+ (unsigned int)copy_len ));
+
+ delete_partial_auth(pad);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ DEBUG(10,("check_spnego_blob_complete: "
+ "pad->partial_data.length = %u, "
+ "pad->needed_len = %u, "
+ "copy_len = %u, "
+ "pblob->length = %u,\n",
+ (unsigned int)pad->partial_data.length,
+ (unsigned int)pad->needed_len,
+ (unsigned int)copy_len,
+ (unsigned int)pblob->length ));
+
+ tmp_blob = data_blob(NULL,
+ pad->partial_data.length + copy_len);
+
+ /* Concatenate the two (up to copy_len) bytes. */
+ memcpy(tmp_blob.data,
+ pad->partial_data.data,
+ pad->partial_data.length);
+ memcpy(tmp_blob.data + pad->partial_data.length,
+ pblob->data,
+ copy_len);
+
+ /* Replace the partial data. */
+ data_blob_free(&pad->partial_data);
+ pad->partial_data = tmp_blob;
+ ZERO_STRUCT(tmp_blob);
+
+ /* Are we done ? */
+ if (pblob->length >= pad->needed_len) {
+ /* Yes, replace pblob. */
+ data_blob_free(pblob);
+ *pblob = pad->partial_data;
+ ZERO_STRUCT(pad->partial_data);
+ delete_partial_auth(pad);
+ return NT_STATUS_OK;
+ }
+
+ /* Still need more data. */
+ pad->needed_len -= copy_len;
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+ }
+
+ if ((pblob->data[0] != ASN1_APPLICATION(0)) &&
+ (pblob->data[0] != ASN1_CONTEXT(1))) {
+ /* Not something we can determine the
+ * length of.
+ */
+ return NT_STATUS_OK;
+ }
+
+ /* This is a new SPNEGO sessionsetup - see if
+ * the data given in this blob is enough.
+ */
+
+ asn1_load(&data, *pblob);
+ asn1_start_tag(&data, pblob->data[0]);
+ if (data.has_error || data.nesting == NULL) {
+ asn1_free(&data);
+ /* Let caller catch. */
+ return NT_STATUS_OK;
+ }
+
+ /* Integer wrap paranoia.... */
+
+ if (data.nesting->taglen + data.nesting->start < data.nesting->taglen ||
+ data.nesting->taglen + data.nesting->start < data.nesting->start) {
+
+ DEBUG(2,("check_spnego_blob_complete: integer wrap "
+ "data.nesting->taglen = %u, "
+ "data.nesting->start = %u\n",
+ (unsigned int)data.nesting->taglen,
+ (unsigned int)data.nesting->start ));
+
+ asn1_free(&data);
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* Total length of the needed asn1 is the tag length
+ * plus the current offset. */
+
+ needed_len = data.nesting->taglen + data.nesting->start;
+ asn1_free(&data);
+
+ DEBUG(10,("check_spnego_blob_complete: needed_len = %u, "
+ "pblob->length = %u\n",
+ (unsigned int)needed_len,
+ (unsigned int)pblob->length ));
+
+ if (needed_len <= pblob->length) {
+ /* Nothing to do - blob is complete. */
+ return NT_STATUS_OK;
+ }
+
+ /* Refuse the blob if it's bigger than 64k. */
+ if (needed_len > 65536) {
+ DEBUG(2,("check_spnego_blob_complete: needed_len too large (%u)\n",
+ (unsigned int)needed_len ));
+ return NT_STATUS_INVALID_PARAMETER;
+ }
+
+ /* We must store this blob until complete. */
+ if (!(pad = SMB_MALLOC_P(struct pending_auth_data))) {
+ return NT_STATUS_NO_MEMORY;
+ }
+ pad->needed_len = needed_len - pblob->length;
+ pad->partial_data = data_blob(pblob->data, pblob->length);
+ if (pad->partial_data.data == NULL) {
+ SAFE_FREE(pad);
+ return NT_STATUS_NO_MEMORY;
+ }
+ pad->smbpid = smbpid;
+ pad->vuid = vuid;
+ DLIST_ADD(pd_list, pad);
+
+ return NT_STATUS_MORE_PROCESSING_REQUIRED;
+}
+
/****************************************************************************
Reply to a session setup command.
+ conn POINTER CAN BE NULL HERE !
****************************************************************************/
static int reply_sesssetup_and_X_spnego(connection_struct *conn, char *inbuf,
enum remote_arch_types ra_type = get_remote_arch();
int vuid = SVAL(inbuf,smb_uid);
user_struct *vuser = NULL;
+ NTSTATUS status = NT_STATUS_OK;
+ uint16 smbpid = SVAL(inbuf,smb_pid);
+ uint16 smb_flag2 = SVAL(inbuf, smb_flg2);
DEBUG(3,("Doing spnego session setup\n"));
if (data_blob_len == 0) {
/* an invalid request */
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
bufrem = smb_bufrem(inbuf, p);
#endif
p2 = inbuf + smb_vwv13 + data_blob_len;
- p2 += srvstr_pull_buf(inbuf, native_os, p2, sizeof(native_os), STR_TERMINATE);
- p2 += srvstr_pull_buf(inbuf, native_lanman, p2, sizeof(native_lanman), STR_TERMINATE);
- p2 += srvstr_pull_buf(inbuf, primary_domain, p2, sizeof(primary_domain), STR_TERMINATE);
+ p2 += srvstr_pull_buf(inbuf, smb_flag2, native_os, p2,
+ sizeof(native_os), STR_TERMINATE);
+ p2 += srvstr_pull_buf(inbuf, smb_flag2, native_lanman, p2,
+ sizeof(native_lanman), STR_TERMINATE);
+ p2 += srvstr_pull_buf(inbuf, smb_flag2, primary_domain, p2,
+ sizeof(primary_domain), STR_TERMINATE);
DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
native_os, native_lanman, primary_domain));
if ( ra_type == RA_WIN2K ) {
+ /* Vista sets neither the OS or lanman strings */
+
+ if ( !strlen(native_os) && !strlen(native_lanman) )
+ set_remote_arch(RA_VISTA);
+
/* Windows 2003 doesn't set the native lanman string,
but does set primary domain which is a bug I think */
- if ( !strlen(native_lanman) )
+ if ( !strlen(native_lanman) ) {
ra_lanman_string( primary_domain );
- else
+ } else {
ra_lanman_string( native_lanman );
+ }
}
vuser = get_partial_auth_user_struct(vuid);
if (!vuser) {
- vuid = register_vuid(NULL, data_blob(NULL, 0), data_blob(NULL, 0), NULL);
+ struct pending_auth_data *pad = get_pending_auth_data(smbpid);
+ if (pad) {
+ DEBUG(10,("reply_sesssetup_and_X_spnego: found pending vuid %u\n",
+ (unsigned int)pad->vuid ));
+ vuid = pad->vuid;
+ vuser = get_partial_auth_user_struct(vuid);
+ }
+ }
+
+ if (!vuser) {
+ vuid = register_vuid(NULL, data_blob_null, data_blob_null, NULL);
if (vuid == UID_FIELD_INVALID ) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ data_blob_free(&blob1);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
vuser = get_partial_auth_user_struct(vuid);
}
if (!vuser) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ data_blob_free(&blob1);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
SSVAL(outbuf,smb_uid,vuid);
-
+
+ /* Large (greater than 4k) SPNEGO blobs are split into multiple
+ * sessionsetup requests as the Windows limit on the security blob
+ * field is 4k. Bug #4400. JRA.
+ */
+
+ status = check_spnego_blob_complete(smbpid, vuid, &blob1);
+ if (!NT_STATUS_IS_OK(status)) {
+ if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ /* Real error - kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
+ data_blob_free(&blob1);
+ return ERROR_NT(nt_status_squash(status));
+ }
+
if (blob1.data[0] == ASN1_APPLICATION(0)) {
/* its a negTokenTarg packet */
ret = reply_spnego_negotiate(conn, inbuf, outbuf, vuid, length, bufsize, blob1,
if (strncmp((char *)(blob1.data), "NTLMSSP", 7) == 0) {
DATA_BLOB chal;
- NTSTATUS nt_status;
if (!vuser->auth_ntlmssp_state) {
- nt_status = auth_ntlmssp_start(&vuser->auth_ntlmssp_state);
- if (!NT_STATUS_IS_OK(nt_status)) {
+ status = auth_ntlmssp_start(&vuser->auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
/* Kill the intermediate vuid */
invalidate_vuid(vuid);
-
- return ERROR_NT(nt_status);
+ data_blob_free(&blob1);
+ return ERROR_NT(nt_status_squash(status));
}
}
- nt_status = auth_ntlmssp_update(vuser->auth_ntlmssp_state,
+ status = auth_ntlmssp_update(vuser->auth_ntlmssp_state,
blob1, &chal);
data_blob_free(&blob1);
reply_spnego_ntlmssp(conn, inbuf, outbuf, vuid,
&vuser->auth_ntlmssp_state,
- &chal, nt_status, False);
+ &chal, status, False);
data_blob_free(&chal);
return -1;
}
data_blob_free(&blob1);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
/****************************************************************************
a new session setup with VC==0 is ignored.
****************************************************************************/
-static int shutdown_other_smbds(TDB_CONTEXT *tdb, TDB_DATA kbuf, TDB_DATA dbuf,
- void *p)
+static int shutdown_other_smbds(struct db_record *rec,
+ const struct connections_key *key,
+ const struct connections_data *crec,
+ void *private_data)
{
- struct sessionid *sessionid = (struct sessionid *)dbuf.dptr;
- const char *ip = (const char *)p;
+ const char *ip = (const char *)private_data;
- if (!process_exists(pid_to_procid(sessionid->pid))) {
+ if (!process_exists(crec->pid)) {
return 0;
}
- if (sessionid->pid == sys_getpid()) {
+ if (procid_is_me(&crec->pid)) {
return 0;
}
- if (strcmp(ip, sessionid->ip_addr) != 0) {
+ if (strcmp(ip, crec->addr) != 0) {
return 0;
}
- message_send_pid(pid_to_procid(sessionid->pid), MSG_SHUTDOWN,
- NULL, 0, True);
+ messaging_send(smbd_messaging_context(), crec->pid, MSG_SHUTDOWN,
+ &data_blob_null);
return 0;
}
invalidate_all_vuids();
#endif
if (lp_reset_on_zero_vc()) {
- session_traverse(shutdown_other_smbds, client_addr());
+ connections_forall(shutdown_other_smbds, client_addr());
}
}
fstring native_lanman;
fstring primary_domain;
static BOOL done_sesssetup = False;
- extern BOOL global_encrypted_passwords_negotiated;
- extern BOOL global_spnego_negotiated;
- extern enum protocol_types Protocol;
- extern int max_send;
-
auth_usersupplied_info *user_info = NULL;
- extern struct auth_context *negprot_global_auth_context;
auth_serversupplied_info *server_info = NULL;
+ uint16 smb_flag2 = SVAL(inbuf, smb_flg2);
NTSTATUS nt_status;
ZERO_STRUCT(nt_resp);
ZERO_STRUCT(plaintext_password);
- DEBUG(3,("wct=%d flg2=0x%x\n", CVAL(inbuf, smb_wct), SVAL(inbuf, smb_flg2)));
+ DEBUG(3,("wct=%d flg2=0x%x\n", CVAL(inbuf, smb_wct), smb_flag2));
/* a SPNEGO session setup has 12 command words, whereas a normal
NT1 session setup has 13. See the cifs spec. */
if (CVAL(inbuf, smb_wct) == 12 &&
- (SVAL(inbuf, smb_flg2) & FLAGS2_EXTENDED_SECURITY)) {
+ (smb_flag2 & FLAGS2_EXTENDED_SECURITY)) {
if (!global_spnego_negotiated) {
DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt at SPNEGO session setup when it was not negoitiated.\n"));
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
if (SVAL(inbuf,smb_vwv4) == 0) {
remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
if ((passlen1 > MAX_PASS_LEN) || (passlen1 > smb_bufrem(inbuf, smb_buf(inbuf)))) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
if (doencrypt) {
plaintext_password.data[passlen1] = 0;
}
- srvstr_pull_buf(inbuf, user, smb_buf(inbuf)+passlen1, sizeof(user), STR_TERMINATE);
+ srvstr_pull_buf(inbuf, smb_flag2, user,
+ smb_buf(inbuf)+passlen1, sizeof(user),
+ STR_TERMINATE);
*domain = 0;
} else {
/* check for nasty tricks */
if (passlen1 > MAX_PASS_LEN || passlen1 > smb_bufrem(inbuf, p)) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
if (passlen2 > MAX_PASS_LEN || passlen2 > smb_bufrem(inbuf, p+passlen1)) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ return ERROR_NT(nt_status_squash(NT_STATUS_INVALID_PARAMETER));
}
/* Save the lanman2 password and the NT md4 password. */
nt_resp = data_blob(p+passlen1, passlen2);
} else {
pstring pass;
- BOOL unic=SVAL(inbuf, smb_flg2) & FLAGS2_UNICODE_STRINGS;
+ BOOL unic= smb_flag2 & FLAGS2_UNICODE_STRINGS;
#if 0
/* This was the previous fix. Not sure if it's still valid. JRA. */
if (unic && (passlen2 == 0) && passlen1) {
/* Only a ascii plaintext password was sent. */
- srvstr_pull(inbuf, pass, smb_buf(inbuf), sizeof(pass),
- passlen1, STR_TERMINATE|STR_ASCII);
+ srvstr_pull(inbuf, smb_flag2, pass,
+ smb_buf(inbuf), sizeof(pass),
+ passlen1, STR_TERMINATE|STR_ASCII);
} else {
- srvstr_pull(inbuf, pass, smb_buf(inbuf),
- sizeof(pass), unic ? passlen2 : passlen1,
- STR_TERMINATE);
+ srvstr_pull(inbuf, smb_flag2, pass,
+ smb_buf(inbuf), sizeof(pass),
+ unic ? passlen2 : passlen1,
+ STR_TERMINATE);
}
plaintext_password = data_blob(pass, strlen(pass)+1);
}
p += passlen1 + passlen2;
- p += srvstr_pull_buf(inbuf, user, p, sizeof(user), STR_TERMINATE);
- p += srvstr_pull_buf(inbuf, domain, p, sizeof(domain), STR_TERMINATE);
- p += srvstr_pull_buf(inbuf, native_os, p, sizeof(native_os), STR_TERMINATE);
- p += srvstr_pull_buf(inbuf, native_lanman, p, sizeof(native_lanman), STR_TERMINATE);
+ p += srvstr_pull_buf(inbuf, smb_flag2, user, p,
+ sizeof(user), STR_TERMINATE);
+ p += srvstr_pull_buf(inbuf, smb_flag2, domain, p,
+ sizeof(domain), STR_TERMINATE);
+ p += srvstr_pull_buf(inbuf, smb_flag2, native_os,
+ p, sizeof(native_os), STR_TERMINATE);
+ p += srvstr_pull_buf(inbuf, smb_flag2,
+ native_lanman, p, sizeof(native_lanman),
+ STR_TERMINATE);
/* not documented or decoded by Ethereal but there is one more string
in the extra bytes which is the same as the PrimaryDomain when using
byte_count = SVAL(inbuf, smb_vwv13);
if ( PTR_DIFF(p, save_p) < byte_count)
- p += srvstr_pull_buf(inbuf, primary_domain, p, sizeof(primary_domain), STR_TERMINATE);
+ p += srvstr_pull_buf(inbuf, smb_flag2,
+ primary_domain, p,
+ sizeof(primary_domain),
+ STR_TERMINATE);
else
fstrcpy( primary_domain, "null" );
/* This has to be here, because this is a perfectly valid behaviour for guest logons :-( */
DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt at 'normal' session setup after negotiating spnego.\n"));
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
fstrcpy(sub_user, user);
} else {
map_username(sub_user);
add_session_user(sub_user);
+ add_session_workgroup(domain);
/* Then force it to null for the benfit of the code below */
*user = 0;
}
} else if (doencrypt) {
if (!negprot_global_auth_context) {
DEBUG(0, ("reply_sesssetup_and_X: Attempted encrypted session setup without negprot denied!\n"));
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
nt_status = make_user_info_for_reply_enc(&user_info, user, domain,
lm_resp, nt_resp);
/* Ensure we can't possible take a code path leading to a null defref. */
if (!server_info) {
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
nt_status = create_local_token(server_info);
if (server_info->user_session_key.data) {
session_key = data_blob(server_info->user_session_key.data, server_info->user_session_key.length);
} else {
- session_key = data_blob(NULL, 0);
+ session_key = data_blob_null;
}
data_blob_clear_free(&plaintext_password);
/* it's ok - setup a reply */
- set_message(outbuf,3,0,True);
+ set_message(inbuf,outbuf,3,0,True);
if (Protocol >= PROTOCOL_NT1) {
char *p = smb_buf( outbuf );
p += add_signature( outbuf, p );
- set_message_end( outbuf, p );
+ set_message_end(inbuf, outbuf, p );
/* perhaps grab OS version here?? */
}
/* register the name and uid as being validated, so further connections
to a uid can get through without a password, on the same VC */
- /* register_vuid keeps the server info */
- sess_vuid = register_vuid(server_info, session_key, nt_resp.data ? nt_resp : lm_resp, sub_user);
- data_blob_free(&nt_resp);
- data_blob_free(&lm_resp);
-
- if (sess_vuid == UID_FIELD_INVALID) {
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
- }
+ if (lp_security() == SEC_SHARE) {
+ sess_vuid = UID_FIELD_INVALID;
+ data_blob_free(&session_key);
+ TALLOC_FREE(server_info);
+ } else {
+ /* register_vuid keeps the server info */
+ sess_vuid = register_vuid(server_info, session_key,
+ nt_resp.data ? nt_resp : lm_resp,
+ sub_user);
+ if (sess_vuid == UID_FIELD_INVALID) {
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
+ return ERROR_NT(nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ }
- /* current_user_info is changed on new vuid */
- reload_services( True );
+ /* current_user_info is changed on new vuid */
+ reload_services( True );
- sessionsetup_start_signing_engine(server_info, inbuf);
+ sessionsetup_start_signing_engine(server_info, inbuf);
+ }
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
+
SSVAL(outbuf,smb_uid,sess_vuid);
SSVAL(inbuf,smb_uid,sess_vuid);
git.samba.org / vlendec / samba-autobuild / .git / blobdiff