-/*
+/*
Unix SMB/CIFS implementation.
handle SMBsessionsetup
Copyright (C) Andrew Tridgell 1998-2001
Copyright (C) Andrew Bartlett 2001
Copyright (C) Jim McDonough <jmcd@us.ibm.com> 2002
Copyright (C) Luke Howard 2003
+ Copyright (C) Volker Lendecke 2007
+ Copyright (C) Jeremy Allison 2007
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,
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.
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include "includes.h"
-uint32 global_client_caps = 0;
+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;
-static struct auth_ntlmssp_state *global_ntlmssp_state;
+uint32 global_client_caps = 0;
/*
on a logon error possibly map the error to success if "map to guest"
is set approriately
*/
-static NTSTATUS do_map_to_guest(NTSTATUS status, auth_serversupplied_info **server_info,
+static NTSTATUS do_map_to_guest(NTSTATUS status,
+ auth_serversupplied_info **server_info,
const char *user, const char *domain)
{
if (NT_STATUS_EQUAL(status, NT_STATUS_NO_SUCH_USER)) {
- if ((lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_USER) ||
+ if ((lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_USER) ||
(lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD)) {
DEBUG(3,("No such user %s [%s] - using guest account\n",
user, domain));
if (NT_STATUS_EQUAL(status, NT_STATUS_WRONG_PASSWORD)) {
if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_PASSWORD) {
- DEBUG(3,("Registered username %s for guest access\n",user));
+ DEBUG(3,("Registered username %s for guest access\n",
+ user));
status = make_server_info_guest(server_info);
}
}
Add the standard 'Samba' signature to the end of the session setup.
****************************************************************************/
-static int add_signature(char *outbuf, char *p)
+static int push_signature(uint8 **outbuf)
{
- char *start = p;
- fstring lanman;
+ char *lanman;
+ int result, tmp;
+
+ result = 0;
+
+ tmp = message_push_string(outbuf, "Unix", STR_TERMINATE);
+
+ if (tmp == -1) return -1;
+ result += tmp;
+
+ if (asprintf(&lanman, "Samba %s", SAMBA_VERSION_STRING) != -1) {
+ tmp = message_push_string(outbuf, lanman, STR_TERMINATE);
+ SAFE_FREE(lanman);
+ }
+ else {
+ tmp = message_push_string(outbuf, "Samba", STR_TERMINATE);
+ }
+
+ if (tmp == -1) return -1;
+ result += tmp;
- fstr_sprintf( lanman, "Samba %s", SAMBA_VERSION_STRING);
+ tmp = message_push_string(outbuf, lp_workgroup(), STR_TERMINATE);
- p += srvstr_push(outbuf, p, "Unix", -1, STR_TERMINATE);
- p += srvstr_push(outbuf, p, lanman, -1, STR_TERMINATE);
- p += srvstr_push(outbuf, p, lp_workgroup(), -1, STR_TERMINATE);
+ if (tmp == -1) return -1;
+ result += tmp;
- return PTR_DIFF(p, start);
+ return result;
}
/****************************************************************************
- Send a security blob via a session setup reply.
+ Start the signing engine if needed. Don't fail signing here.
****************************************************************************/
-static BOOL reply_sesssetup_blob(connection_struct *conn, char *outbuf,
- DATA_BLOB blob, NTSTATUS nt_status)
+static void sessionsetup_start_signing_engine(
+ const auth_serversupplied_info *server_info,
+ const uint8 *inbuf)
{
- char *p;
-
- set_message(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);
-
- /* should we cap this? */
- memcpy(p, blob.data, blob.length);
- p += blob.length;
+ if (!server_info->guest && !srv_signing_started()) {
+ /* We need to start the signing engine
+ * here but a W2K client sends the old
+ * "BSRSPYL " signature instead of the
+ * correct one. Subsequent packets will
+ * be correct.
+ */
+ srv_check_sign_mac((char *)inbuf, False);
+ }
+}
- p += add_signature( outbuf, p );
+/****************************************************************************
+ Send a security blob via a session setup reply.
+****************************************************************************/
- set_message_end(outbuf,p);
+static void reply_sesssetup_blob(struct smb_request *req,
+ DATA_BLOB blob,
+ NTSTATUS nt_status)
+{
+ if (!NT_STATUS_IS_OK(nt_status) &&
+ !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ reply_nterror(req, nt_status_squash(nt_status));
+ } else {
+ nt_status = nt_status_squash(nt_status);
+ SIVAL(req->outbuf, smb_rcls, NT_STATUS_V(nt_status));
+ SSVAL(req->outbuf, smb_vwv0, 0xFF); /* no chaining possible */
+ SSVAL(req->outbuf, smb_vwv3, blob.length);
+
+ if ((message_push_blob(&req->outbuf, blob) == -1)
+ || (push_signature(&req->outbuf) == -1)) {
+ reply_nterror(req, NT_STATUS_NO_MEMORY);
+ }
+ }
- return send_smb(smbd_server_fd(),outbuf);
+ show_msg((char *)req->outbuf);
+ srv_send_smb(smbd_server_fd(),(char *)req->outbuf,req->encrypted);
+ TALLOC_FREE(req->outbuf);
}
/****************************************************************************
- Do a 'guest' logon, getting back the
+ Do a 'guest' logon, getting back the
****************************************************************************/
-static NTSTATUS check_guest_password(auth_serversupplied_info **server_info)
+static NTSTATUS check_guest_password(auth_serversupplied_info **server_info)
{
struct auth_context *auth_context;
auth_usersupplied_info *user_info = NULL;
-
+
NTSTATUS nt_status;
unsigned char chal[8];
DEBUG(3,("Got anonymous request\n"));
- if (!NT_STATUS_IS_OK(nt_status = make_auth_context_fixed(&auth_context, chal))) {
+ if (!NT_STATUS_IS_OK(nt_status = make_auth_context_fixed(&auth_context,
+ chal))) {
return nt_status;
}
(auth_context->free)(&auth_context);
return NT_STATUS_NO_MEMORY;
}
-
- nt_status = auth_context->check_ntlm_password(auth_context, user_info, server_info);
+
+ nt_status = auth_context->check_ntlm_password(auth_context,
+ user_info,
+ server_info);
(auth_context->free)(&auth_context);
free_user_info(&user_info);
return nt_status;
#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)
+
+static void reply_spnego_kerberos(struct smb_request *req,
+ DATA_BLOB *secblob,
+ uint16 vuid,
+ bool *p_invalidate_vuid)
{
+ TALLOC_CTX *mem_ctx;
DATA_BLOB ticket;
char *client, *p, *domain;
fstring netbios_domain_name;
struct passwd *pw;
- char *user;
- int sess_vuid;
- NTSTATUS ret;
- DATA_BLOB auth_data;
+ fstring user;
+ int sess_vuid = req->vuid;
+ NTSTATUS ret = NT_STATUS_OK;
+ struct PAC_DATA *pac_data = NULL;
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;
+ struct PAC_LOGON_INFO *logon_info = NULL;
ZERO_STRUCT(ticket);
- ZERO_STRUCT(auth_data);
ZERO_STRUCT(ap_rep);
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) {
+ reply_nterror(req, nt_status_squash(NT_STATUS_NO_MEMORY));
+ return;
+ }
+
if (!spnego_parse_krb5_wrap(*secblob, &ticket, tok_id)) {
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ talloc_destroy(mem_ctx);
+ reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ return;
}
- ret = ads_verify_ticket(lp_realm(), &ticket, &client, &auth_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"));
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
- }
+#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(&auth_data);
+ 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);
+ reply_nterror(req, nt_status_squash(ret));
+ return;
+ }
DEBUG(3,("Ticket name is [%s]\n", client));
data_blob_free(&ap_rep);
data_blob_free(&session_key);
SAFE_FREE(client);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ talloc_destroy(mem_ctx);
+ reply_nterror(req,nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ return;
}
*p = 0;
+
+ /* save the PAC data if we have it */
+
+ if (pac_data) {
+ logon_info = get_logon_info_from_pac(pac_data);
+ if (logon_info) {
+ netsamlogon_cache_store( client, &logon_info->info3 );
+ }
+ }
+
if (!strequal(p+1, lp_realm())) {
DEBUG(3,("Ticket for foreign realm %s@%s\n", client, p+1));
if (!lp_allow_trusted_domains()) {
data_blob_free(&ap_rep);
data_blob_free(&session_key);
SAFE_FREE(client);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ talloc_destroy(mem_ctx);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ return;
}
}
domain = p+1;
- {
+ if (logon_info && logon_info->info3.base.domain.string) {
+ fstrcpy(netbios_domain_name,
+ logon_info->info3.base.domain.string);
+ domain = netbios_domain_name;
+ DEBUG(10, ("Mapped to [%s] (using PAC)\n", domain));
+
+ } else {
+
/* If we have winbind running, we can (and must) shorten the
username by using the short netbios name. Otherwise we will
have inconsistent user names. With Kerberos, we get the
name. And even w2k3 does use ntlmssp if you for example
connect to an ip address. */
- struct winbindd_request wb_request;
- struct winbindd_response wb_response;
- NSS_STATUS wb_result;
-
- ZERO_STRUCT(wb_request);
- ZERO_STRUCT(wb_response);
+ wbcErr wbc_status;
+ struct wbcDomainInfo *info = NULL;
DEBUG(10, ("Mapping [%s] to short name\n", domain));
- fstrcpy(wb_request.domain_name, domain);
-
- wb_result = winbindd_request(WINBINDD_DOMAIN_INFO,
- &wb_request, &wb_response);
+ wbc_status = wbcDomainInfo(domain, &info);
- if (wb_result == NSS_STATUS_SUCCESS) {
+ if (WBC_ERROR_IS_OK(wbc_status)) {
fstrcpy(netbios_domain_name,
- wb_response.data.domain_info.name);
- domain = netbios_domain_name;
+ info->short_name);
- DEBUG(10, ("Mapped to [%s]\n", domain));
+ wbcFreeMemory(info);
+ domain = netbios_domain_name;
+ DEBUG(10, ("Mapped to [%s] (using Winbind)\n", domain));
} else {
- DEBUG(3, ("Could not find short name -- winbind "
- "not running?\n"));
+ DEBUG(3, ("Could not find short name: %s\n",
+ wbcErrorString(wbc_status)));
}
}
- asprintf(&user, "%s%c%s", domain, *lp_winbind_separator(), client);
-
+ fstr_sprintf(user, "%s%c%s", domain, *lp_winbind_separator(), client);
+
/* 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);
+ reply_nterror(req, nt_status_squash(ret));
+ return;
+ }
+ }
- pw = smb_getpwnam( user, real_username, True );
-
if (!pw) {
- DEBUG(1,("Username %s is invalid on this system\n",user));
- SAFE_FREE(user);
- SAFE_FREE(client);
- data_blob_free(&ap_rep);
- data_blob_free(&session_key);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+
+ /* this was originally the behavior of Samba 2.2, if a user
+ did not have a local uid but has been authenticated, then
+ map them to a guest account */
+
+ if (lp_map_to_guest() == MAP_TO_GUEST_ON_BAD_UID){
+ map_domainuser_to_guest = True;
+ fstrcpy(user,lp_guestaccount());
+ pw = smb_getpwnam( mem_ctx, user, real_username, True );
+ }
+
+ /* extra sanity check that the guest account is valid */
+
+ if ( !pw ) {
+ DEBUG(1,("Username %s is invalid on this system\n",
+ user));
+ SAFE_FREE(client);
+ data_blob_free(&ap_rep);
+ data_blob_free(&session_key);
+ TALLOC_FREE(mem_ctx);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ return;
+ }
}
/* setup the string used by %U */
-
+
sub_set_smb_name( real_username );
reload_services(True);
-
- if (!NT_STATUS_IS_OK(ret = make_server_info_pw(&server_info, real_username, pw)))
- {
- DEBUG(1,("make_server_info_from_pw failed!\n"));
- SAFE_FREE(user);
- SAFE_FREE(client);
- data_blob_free(&ap_rep);
- data_blob_free(&session_key);
- passwd_free(&pw);
- return ERROR_NT(ret);
+
+ if ( map_domainuser_to_guest ) {
+ make_server_info_guest(&server_info);
+ } else if (logon_info) {
+ /* 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",
+ nt_errstr(ret)));
+ SAFE_FREE(client);
+ data_blob_free(&ap_rep);
+ data_blob_free(&session_key);
+ TALLOC_FREE(mem_ctx);
+ reply_nterror(req, nt_status_squash(ret));
+ return;
+ }
+
+ } else {
+ ret = make_server_info_pw(&server_info, real_username, pw);
+
+ if ( !NT_STATUS_IS_OK(ret) ) {
+ DEBUG(1,("make_server_info_pw failed: %s!\n",
+ nt_errstr(ret)));
+ SAFE_FREE(client);
+ data_blob_free(&ap_rep);
+ data_blob_free(&session_key);
+ TALLOC_FREE(mem_ctx);
+ reply_nterror(req, nt_status_squash(ret));
+ return;
+ }
+
+ /* make_server_info_pw does not set the domain. Without this
+ * we end up with the local netbios name in substitutions for
+ * %D. */
+
+ if (server_info->sam_account != NULL) {
+ pdb_set_domain(server_info->sam_account,
+ domain, PDB_SET);
+ }
+ }
+
+ if (username_was_mapped) {
+ server_info->was_mapped = username_was_mapped;
}
- passwd_free(&pw);
- /* make_server_info_pw does not set the domain. Without this we end up
- * with the local netbios name in substitutions for %D. */
+ /* we need to build the token for the user. make_server_info_guest()
+ already does this */
+
+ if ( !server_info->ptok ) {
+ ret = create_local_token( server_info );
+ if ( !NT_STATUS_IS_OK(ret) ) {
+ DEBUG(10,("failed to create local token: %s\n",
+ nt_errstr(ret)));
+ SAFE_FREE(client);
+ data_blob_free(&ap_rep);
+ data_blob_free(&session_key);
+ TALLOC_FREE( mem_ctx );
+ TALLOC_FREE( server_info );
+ reply_nterror(req, nt_status_squash(ret));
+ return;
+ }
+ }
- if (server_info->sam_account != NULL) {
- pdb_set_domain(server_info->sam_account, domain, PDB_SET);
- }
+ /* register_existing_vuid keeps the server info */
+ /* register_existing_vuid takes ownership of session_key on success,
+ * no need to free after this on success. A better interface would copy
+ * it.... */
- /* register_vuid keeps the server info */
- /* register_vuid takes ownership of session_key, no need to free after this.
- A better interface would copy it.... */
- sess_vuid = register_vuid(server_info, session_key, nullblob, client);
+ if (!is_partial_auth_vuid(sess_vuid)) {
+ sess_vuid = register_initial_vuid();
+ }
+ sess_vuid = register_existing_vuid(sess_vuid,
+ server_info,
+ session_key,
+ nullblob,
+ client);
- SAFE_FREE(user);
SAFE_FREE(client);
- if (sess_vuid == -1) {
+ reply_outbuf(req, 4, 0);
+ SSVAL(req->outbuf,smb_uid,sess_vuid);
+
+ if (sess_vuid == UID_FIELD_INVALID ) {
ret = NT_STATUS_LOGON_FAILURE;
+ data_blob_free(&session_key);
} else {
/* current_user_info is changed on new vuid */
reload_services( True );
- set_message(outbuf,4,0,True);
- SSVAL(outbuf, smb_vwv3, 0);
-
+ SSVAL(req->outbuf, smb_vwv3, 0);
+
if (server_info->guest) {
- SSVAL(outbuf,smb_vwv2,1);
+ SSVAL(req->outbuf,smb_vwv2,1);
}
-
- SSVAL(outbuf, smb_uid, sess_vuid);
- if (!server_info->guest && !srv_signing_started()) {
- /* We need to start the signing engine
- * here but a W2K client sends the old
- * "BSRSPYL " signature instead of the
- * correct one. Subsequent packets will
- * be correct.
- */
- srv_check_sign_mac(inbuf, False);
- }
+ SSVAL(req->outbuf, smb_uid, sess_vuid);
+
+ sessionsetup_start_signing_engine(server_info, req->inbuf);
+ /* Successful logon. Keep this vuid. */
+ *p_invalidate_vuid = False;
}
/* wrap that up in a nice GSS-API wrapping */
if (NT_STATUS_IS_OK(ret)) {
- ap_rep_wrapped = spnego_gen_krb5_wrap(ap_rep, TOK_ID_KRB_AP_REP);
+ 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);
+ response = spnego_gen_auth_response(&ap_rep_wrapped, ret,
+ OID_KERBEROS5_OLD);
+ reply_sesssetup_blob(req, response, ret);
data_blob_free(&ap_rep);
data_blob_free(&ap_rep_wrapped);
data_blob_free(&response);
-
- return -1; /* already replied */
+ TALLOC_FREE(mem_ctx);
}
+
#endif
/****************************************************************************
Send a session setup reply, wrapped in SPNEGO.
Get vuid and check first.
End the NTLMSSP exchange context if we are OK/complete fail
+ This should be split into two functions, one to handle each
+ leg of the NTLM auth steps.
***************************************************************************/
-static BOOL reply_spnego_ntlmssp(connection_struct *conn, char *inbuf, char *outbuf,
+static void reply_spnego_ntlmssp(struct smb_request *req,
+ uint16 vuid,
AUTH_NTLMSSP_STATE **auth_ntlmssp_state,
- DATA_BLOB *ntlmssp_blob, NTSTATUS nt_status)
+ DATA_BLOB *ntlmssp_blob, NTSTATUS nt_status,
+ const char *OID,
+ bool wrap)
{
- BOOL ret;
DATA_BLOB response;
struct auth_serversupplied_info *server_info = NULL;
if (NT_STATUS_IS_OK(nt_status)) {
server_info = (*auth_ntlmssp_state)->server_info;
} else {
- nt_status = do_map_to_guest(nt_status,
- &server_info,
- (*auth_ntlmssp_state)->ntlmssp_state->user,
- (*auth_ntlmssp_state)->ntlmssp_state->domain);
+ nt_status = do_map_to_guest(nt_status,
+ &server_info,
+ (*auth_ntlmssp_state)->ntlmssp_state->user,
+ (*auth_ntlmssp_state)->ntlmssp_state->domain);
}
+ reply_outbuf(req, 4, 0);
+
+ SSVAL(req->outbuf, smb_uid, vuid);
+
if (NT_STATUS_IS_OK(nt_status)) {
- int sess_vuid;
- DATA_BLOB nullblob = data_blob(NULL, 0);
- DATA_BLOB session_key = data_blob((*auth_ntlmssp_state)->ntlmssp_state->session_key.data, (*auth_ntlmssp_state)->ntlmssp_state->session_key.length);
+ 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);
+
+ if (!is_partial_auth_vuid(vuid)) {
+ data_blob_free(&session_key);
+ nt_status = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
+ /* register_existing_vuid keeps the server info */
+ if (register_existing_vuid(vuid,
+ server_info,
+ session_key, nullblob,
+ (*auth_ntlmssp_state)->ntlmssp_state->user) !=
+ vuid) {
+ data_blob_free(&session_key);
+ nt_status = NT_STATUS_LOGON_FAILURE;
+ goto out;
+ }
- /* register_vuid keeps the server info */
- sess_vuid = register_vuid(server_info, session_key, nullblob, (*auth_ntlmssp_state)->ntlmssp_state->user);
(*auth_ntlmssp_state)->server_info = NULL;
- if (sess_vuid == -1) {
- nt_status = NT_STATUS_LOGON_FAILURE;
- } else {
-
- /* current_user_info is changed on new vuid */
- reload_services( True );
-
- set_message(outbuf,4,0,True);
- SSVAL(outbuf, smb_vwv3, 0);
-
- if (server_info->guest) {
- SSVAL(outbuf,smb_vwv2,1);
- }
-
- SSVAL(outbuf,smb_uid,sess_vuid);
-
- if (!server_info->guest && !srv_signing_started()) {
- /* We need to start the signing engine
- * here but a W2K client sends the old
- * "BSRSPYL " signature instead of the
- * correct one. Subsequent packets will
- * be correct.
- */
-
- srv_check_sign_mac(inbuf, False);
- }
+ /* current_user_info is changed on new vuid */
+ reload_services( True );
+
+ SSVAL(req->outbuf, smb_vwv3, 0);
+
+ if (server_info->guest) {
+ SSVAL(req->outbuf,smb_vwv2,1);
}
+
+ sessionsetup_start_signing_engine(server_info,
+ (uint8 *)req->inbuf);
}
- response = spnego_gen_auth_response(ntlmssp_blob, nt_status, OID_NTLMSSP);
- ret = reply_sesssetup_blob(conn, outbuf, response, nt_status);
- data_blob_free(&response);
+ out:
+
+ if (wrap) {
+ response = spnego_gen_auth_response(ntlmssp_blob,
+ nt_status, OID);
+ } else {
+ response = *ntlmssp_blob;
+ }
+
+ reply_sesssetup_blob(req, response, nt_status);
+ if (wrap) {
+ data_blob_free(&response);
+ }
/* NT_STATUS_MORE_PROCESSING_REQUIRED from our NTLMSSP code tells us,
and the other end, that we are not finished yet. */
- if (!ret || !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ if (!NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
+ /* NB. This is *NOT* an error case. JRA */
auth_ntlmssp_end(auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
}
-
- return ret;
}
/****************************************************************************
- 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,
- int length, int bufsize,
- DATA_BLOB blob1)
+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;
+
+ *p_is_krb5 = False;
/* parse out the OIDs and the first sec blob */
- if (!parse_negTokenTarg(blob1, OIDs, &secblob)) {
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ if (!parse_negTokenTarg(blob_in, OIDs, pblob_out)) {
+ return NT_STATUS_LOGON_FAILURE;
}
/* only look at the first OID for determining the mechToken --
- accoirding to RFC2478, we should choose the one we want
- and renegotiate, but i smell a client bug here..
-
- Problem observed when connecting to a member (samba box)
- of an AD domain as a user in a Samba domain. Samba member
- server sent back krb5/mskrb5/ntlmssp as mechtypes, but the
- client (2ksp3) replied with ntlmssp/mskrb5/krb5 and an
+ according to RFC2478, we should choose the one we want
+ and renegotiate, but i smell a client bug here..
+
+ Problem observed when connecting to a member (samba box)
+ of an AD domain as a user in a Samba domain. Samba member
+ server sent back krb5/mskrb5/ntlmssp as mechtypes, but the
+ client (2ksp3) replied with ntlmssp/mskrb5/krb5 and an
NTLMSSP mechtoken. --jerry */
-#ifdef HAVE_KRB5
+#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;
+}
+
+/****************************************************************************
+ Fall back from krb5 to NTLMSSP.
+****************************************************************************/
+
+static void reply_spnego_downgrade_to_ntlmssp(struct smb_request *req,
+ uint16 vuid)
+{
+ DATA_BLOB response;
+
+ reply_outbuf(req, 4, 0);
+ SSVAL(req->outbuf,smb_uid,vuid);
+
+ DEBUG(3,("reply_spnego_downgrade_to_ntlmssp: Got krb5 ticket in SPNEGO "
+ "but set to downgrade to NTLMSSP\n"));
+
+ response = spnego_gen_auth_response(NULL,
+ NT_STATUS_MORE_PROCESSING_REQUIRED,
+ OID_NTLMSSP);
+ reply_sesssetup_blob(req, response, NT_STATUS_MORE_PROCESSING_REQUIRED);
+ data_blob_free(&response);
+}
+
+/****************************************************************************
+ Reply to a session setup spnego negotiate packet.
+****************************************************************************/
+
+static void reply_spnego_negotiate(struct smb_request *req,
+ uint16 vuid,
+ 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);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
+
+ DEBUG(3,("reply_spnego_negotiate: Got secblob of size %lu\n",
+ (unsigned long)secblob.length));
#ifdef HAVE_KRB5
- if (got_kerberos_mechanism && (SEC_ADS == lp_security())) {
- int ret = reply_spnego_kerberos(conn, inbuf, outbuf,
- length, bufsize, &secblob);
+ if ( got_kerberos_mechanism && ((lp_security()==SEC_ADS) ||
+ lp_use_kerberos_keytab()) ) {
+ bool destroy_vuid = True;
+ reply_spnego_kerberos(req, &secblob, vuid,
+ &destroy_vuid);
data_blob_free(&secblob);
- return ret;
+ if (destroy_vuid) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
+ return;
}
#endif
- if (global_ntlmssp_state) {
- auth_ntlmssp_end(&global_ntlmssp_state);
+ if (*auth_ntlmssp_state) {
+ auth_ntlmssp_end(auth_ntlmssp_state);
}
- nt_status = auth_ntlmssp_start(&global_ntlmssp_state);
- if (!NT_STATUS_IS_OK(nt_status)) {
- return ERROR_NT(nt_status);
+ if (got_kerberos_mechanism) {
+ data_blob_free(&secblob);
+ /* The mechtoken is a krb5 ticket, but
+ * we need to fall back to NTLM. */
+ reply_spnego_downgrade_to_ntlmssp(req,
+ vuid);
+ return;
+ }
+
+ status = auth_ntlmssp_start(auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ reply_nterror(req, nt_status_squash(status));
+ return;
}
- nt_status = auth_ntlmssp_update(global_ntlmssp_state,
+ status = auth_ntlmssp_update(*auth_ntlmssp_state,
secblob, &chal);
data_blob_free(&secblob);
- reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state,
- &chal, nt_status);
-
+ reply_spnego_ntlmssp(req, vuid, auth_ntlmssp_state,
+ &chal, status, OID_NTLMSSP, true);
+
data_blob_free(&chal);
/* already replied */
- return -1;
+ return;
}
-
+
/****************************************************************************
Reply to a session setup spnego auth packet.
****************************************************************************/
-static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
- int length, int bufsize,
- DATA_BLOB blob1)
+static void reply_spnego_auth(struct smb_request *req,
+ uint16 vuid,
+ 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_LOGON_FAILURE;
if (!spnego_parse_auth(blob1, &auth)) {
#if 0
file_save("auth.dat", blob1.data, blob1.length);
#endif
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ return;
+ }
+
+ 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)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
+
+ 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;
+ reply_spnego_kerberos(req, &secblob,
+ vuid, &destroy_vuid);
+ data_blob_free(&secblob);
+ data_blob_free(&auth);
+ if (destroy_vuid) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ }
+ return;
+ }
+#endif
+ /* Can't blunder into NTLMSSP auth if we have
+ * a krb5 ticket. */
+
+ if (got_krb5_mechanism) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ DEBUG(3,("reply_spnego_auth: network "
+ "misconfiguration, client sent us a "
+ "krb5 ticket and kerberos security "
+ "not enabled"));
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ }
}
-
- if (!global_ntlmssp_state) {
- /* auth before negotiatiate? */
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+
+ /* If we get here it wasn't a negTokenTarg auth packet. */
+ data_blob_free(&secblob);
+
+ if (!*auth_ntlmssp_state) {
+ status = auth_ntlmssp_start(auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
}
-
- nt_status = auth_ntlmssp_update(global_ntlmssp_state,
- auth, &auth_reply);
+
+ status = auth_ntlmssp_update(*auth_ntlmssp_state,
+ auth, &auth_reply);
data_blob_free(&auth);
- reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state,
- &auth_reply, nt_status);
-
+ /* Don't send the mechid as we've already sent this (RFC4178). */
+
+ reply_spnego_ntlmssp(req, vuid,
+ auth_ntlmssp_state,
+ &auth_reply, status, NULL, true);
+
data_blob_free(&auth_reply);
/* and tell smbd that we have already replied to this packet */
- return -1;
+ return;
+}
+
+/****************************************************************************
+ 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,
- char *outbuf,
- int length,int bufsize)
+static void reply_sesssetup_and_X_spnego(struct smb_request *req)
{
uint8 *p;
DATA_BLOB blob1;
- int ret;
size_t bufrem;
fstring native_os, native_lanman, primary_domain;
- char *p2;
- uint16 data_blob_len = SVAL(inbuf, smb_vwv7);
+ const char *p2;
+ uint16 data_blob_len = SVAL(req->inbuf, smb_vwv7);
enum remote_arch_types ra_type = get_remote_arch();
+ int vuid = SVAL(req->inbuf,smb_uid);
+ user_struct *vuser = NULL;
+ NTSTATUS status = NT_STATUS_OK;
+ uint16 smbpid = req->smbpid;
+ uint16 smb_flag2 = req->flags2;
DEBUG(3,("Doing spnego session setup\n"));
if (global_client_caps == 0) {
- global_client_caps = IVAL(inbuf,smb_vwv10);
+ global_client_caps = IVAL(req->inbuf,smb_vwv10);
if (!(global_client_caps & CAP_STATUS32)) {
remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
}
}
-
- p = (uint8 *)smb_buf(inbuf);
+
+ p = (uint8 *)smb_buf(req->inbuf);
if (data_blob_len == 0) {
/* an invalid request */
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ return;
}
- bufrem = smb_bufrem(inbuf, p);
+ bufrem = smb_bufrem(req->inbuf, p);
/* pull the spnego blob */
blob1 = data_blob(p, MIN(bufrem, data_blob_len));
file_save("negotiate.dat", blob1.data, blob1.length);
#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);
- DEBUG(3,("NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
+ p2 = (char *)req->inbuf + smb_vwv13 + data_blob_len;
+ p2 += srvstr_pull_buf(req->inbuf, smb_flag2, native_os, p2,
+ sizeof(native_os), STR_TERMINATE);
+ p2 += srvstr_pull_buf(req->inbuf, smb_flag2, native_lanman, p2,
+ sizeof(native_lanman), STR_TERMINATE);
+ p2 += srvstr_pull_buf(req->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 ) {
- /* Windows 2003 doesn't set the native lanman string,
+ /* 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 );
+ }
+ }
+
+ /* Did we get a valid vuid ? */
+ if (!is_partial_auth_vuid(vuid)) {
+ /* No, then try and see if this is an intermediate sessionsetup
+ * for a large SPNEGO packet. */
+ 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;
+ }
}
-
+
+ /* Do we have a valid vuid now ? */
+ if (!is_partial_auth_vuid(vuid)) {
+ /* No, start a new authentication setup. */
+ vuid = register_initial_vuid();
+ if (vuid == UID_FIELD_INVALID) {
+ data_blob_free(&blob1);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_INVALID_PARAMETER));
+ return;
+ }
+ }
+
+ vuser = get_partial_auth_user_struct(vuid);
+ /* This MUST be valid. */
+ if (!vuser) {
+ smb_panic("reply_sesssetup_and_X_spnego: invalid 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);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
+
if (blob1.data[0] == ASN1_APPLICATION(0)) {
+
/* its a negTokenTarg packet */
- ret = reply_spnego_negotiate(conn, inbuf, outbuf, length, bufsize, blob1);
+
+ reply_spnego_negotiate(req, vuid, blob1,
+ &vuser->auth_ntlmssp_state);
data_blob_free(&blob1);
- return ret;
+ return;
}
if (blob1.data[0] == ASN1_CONTEXT(1)) {
+
/* its a auth packet */
- ret = reply_spnego_auth(conn, inbuf, outbuf, length, bufsize, blob1);
+
+ reply_spnego_auth(req, vuid, blob1,
+ &vuser->auth_ntlmssp_state);
+ data_blob_free(&blob1);
+ return;
+ }
+
+ if (strncmp((char *)(blob1.data), "NTLMSSP", 7) == 0) {
+ DATA_BLOB chal;
+
+ if (!vuser->auth_ntlmssp_state) {
+ status = auth_ntlmssp_start(&vuser->auth_ntlmssp_state);
+ if (!NT_STATUS_IS_OK(status)) {
+ /* Kill the intermediate vuid */
+ invalidate_vuid(vuid);
+ data_blob_free(&blob1);
+ reply_nterror(req, nt_status_squash(status));
+ return;
+ }
+ }
+
+ status = auth_ntlmssp_update(vuser->auth_ntlmssp_state,
+ blob1, &chal);
+
data_blob_free(&blob1);
- return ret;
+
+ reply_spnego_ntlmssp(req, vuid,
+ &vuser->auth_ntlmssp_state,
+ &chal, status, OID_NTLMSSP, false);
+ data_blob_free(&chal);
+ return;
}
/* what sort of packet is this? */
data_blob_free(&blob1);
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
}
/****************************************************************************
a new session setup with VC==0 is ignored.
****************************************************************************/
+static int shutdown_other_smbds(struct db_record *rec,
+ const struct connections_key *key,
+ const struct connections_data *crec,
+ void *private_data)
+{
+ const char *ip = (const char *)private_data;
+
+ if (!process_exists(crec->pid)) {
+ return 0;
+ }
+
+ if (procid_is_me(&crec->pid)) {
+ return 0;
+ }
+
+ if (strcmp(ip, crec->addr) != 0) {
+ return 0;
+ }
+
+ messaging_send(smbd_messaging_context(), crec->pid, MSG_SHUTDOWN,
+ &data_blob_null);
+ return 0;
+}
+
static void setup_new_vc_session(void)
{
- DEBUG(2,("setup_new_vc_session: New VC == 0, if NT4.x compatible we would close all old resources.\n"));
+ char addr[INET6_ADDRSTRLEN];
+
+ DEBUG(2,("setup_new_vc_session: New VC == 0, if NT4.x "
+ "compatible we would close all old resources.\n"));
#if 0
conn_close_all();
invalidate_all_vuids();
#endif
+ if (lp_reset_on_zero_vc()) {
+ connections_forall(shutdown_other_smbds,
+ CONST_DISCARD(void *,
+ client_addr(get_client_fd(),addr,sizeof(addr))));
+ }
}
/****************************************************************************
Reply to a session setup command.
****************************************************************************/
-int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
- int length,int bufsize)
+void reply_sesssetup_and_X(struct smb_request *req)
{
int sess_vuid;
- int smb_bufsize;
+ int smb_bufsize;
DATA_BLOB lm_resp;
DATA_BLOB nt_resp;
DATA_BLOB plaintext_password;
fstring native_os;
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;
-
+ static bool done_sesssetup = False;
auth_usersupplied_info *user_info = NULL;
- extern struct auth_context *negprot_global_auth_context;
auth_serversupplied_info *server_info = NULL;
+ uint16 smb_flag2 = req->flags2;
NTSTATUS nt_status;
- BOOL doencrypt = global_encrypted_passwords_negotiated;
+ bool doencrypt = global_encrypted_passwords_negotiated;
DATA_BLOB session_key;
-
+
START_PROFILE(SMBsesssetupX);
ZERO_STRUCT(lm_resp);
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", req->wct, req->flags2));
/* 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)) {
+ if (req->wct == 12 &&
+ (req->flags2 & 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_UNSUCCESSFUL);
+ DEBUG(0,("reply_sesssetup_and_X: Rejecting attempt "
+ "at SPNEGO session setup when it was not "
+ "negotiated.\n"));
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
- if (SVAL(inbuf,smb_vwv4) == 0) {
+ if (SVAL(req->inbuf,smb_vwv4) == 0) {
setup_new_vc_session();
}
- return reply_sesssetup_and_X_spnego(conn, inbuf, outbuf, length, bufsize);
+
+ reply_sesssetup_and_X_spnego(req);
+ END_PROFILE(SMBsesssetupX);
+ return;
}
- smb_bufsize = SVAL(inbuf,smb_vwv2);
+ smb_bufsize = SVAL(req->inbuf,smb_vwv2);
if (Protocol < PROTOCOL_NT1) {
- uint16 passlen1 = SVAL(inbuf,smb_vwv7);
+ uint16 passlen1 = SVAL(req->inbuf,smb_vwv7);
- /* Never do NT status codes with protocols before NT1 as we don't get client caps. */
+ /* Never do NT status codes with protocols before NT1 as we
+ * don't get client caps. */
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);
+ if ((passlen1 > MAX_PASS_LEN)
+ || (passlen1 > smb_bufrem(req->inbuf,
+ smb_buf(req->inbuf)))) {
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_INVALID_PARAMETER));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
if (doencrypt) {
- lm_resp = data_blob(smb_buf(inbuf), passlen1);
+ lm_resp = data_blob(smb_buf(req->inbuf), passlen1);
} else {
- plaintext_password = data_blob(smb_buf(inbuf), passlen1+1);
+ plaintext_password = data_blob(smb_buf(req->inbuf),
+ passlen1+1);
/* Ensure null termination */
plaintext_password.data[passlen1] = 0;
}
- srvstr_pull_buf(inbuf, user, smb_buf(inbuf)+passlen1, sizeof(user), STR_TERMINATE);
+ srvstr_pull_buf(req->inbuf, req->flags2, user,
+ smb_buf(req->inbuf)+passlen1, sizeof(user),
+ STR_TERMINATE);
*domain = 0;
} else {
- uint16 passlen1 = SVAL(inbuf,smb_vwv7);
- uint16 passlen2 = SVAL(inbuf,smb_vwv8);
+ uint16 passlen1 = SVAL(req->inbuf,smb_vwv7);
+ uint16 passlen2 = SVAL(req->inbuf,smb_vwv8);
enum remote_arch_types ra_type = get_remote_arch();
- char *p = smb_buf(inbuf);
- char *save_p = smb_buf(inbuf);
+ char *p = smb_buf(req->inbuf);
+ char *save_p = smb_buf(req->inbuf);
uint16 byte_count;
-
+
if(global_client_caps == 0) {
- global_client_caps = IVAL(inbuf,smb_vwv11);
-
+ global_client_caps = IVAL(req->inbuf,smb_vwv11);
+
if (!(global_client_caps & CAP_STATUS32)) {
- remove_from_common_flags2(FLAGS2_32_BIT_ERROR_CODES);
+ remove_from_common_flags2(
+ FLAGS2_32_BIT_ERROR_CODES);
}
- /* client_caps is used as final determination if client is NT or Win95.
- This is needed to return the correct error codes in some
- circumstances.
+ /* client_caps is used as final determination if
+ * client is NT or Win95. This is needed to return
+ * the correct error codes in some circumstances.
*/
-
- if(ra_type == RA_WINNT || ra_type == RA_WIN2K || ra_type == RA_WIN95) {
- if(!(global_client_caps & (CAP_NT_SMBS | CAP_STATUS32))) {
+
+ if(ra_type == RA_WINNT || ra_type == RA_WIN2K ||
+ ra_type == RA_WIN95) {
+ if(!(global_client_caps & (CAP_NT_SMBS|
+ CAP_STATUS32))) {
set_remote_arch( RA_WIN95);
}
}
}
if (!doencrypt) {
- /* both Win95 and WinNT stuff up the password lengths for
- non-encrypting systems. Uggh.
-
- if passlen1==24 its a win95 system, and its setting the
- password length incorrectly. Luckily it still works with the
- default code because Win95 will null terminate the password
- anyway
-
- if passlen1>0 and passlen2>0 then maybe its a NT box and its
- setting passlen2 to some random value which really stuffs
- things up. we need to fix that one. */
-
- if (passlen1 > 0 && passlen2 > 0 && passlen2 != 24 && passlen2 != 1)
+ /* both Win95 and WinNT stuff up the password
+ * lengths for non-encrypting systems. Uggh.
+
+ if passlen1==24 its a win95 system, and its setting
+ the password length incorrectly. Luckily it still
+ works with the default code because Win95 will null
+ terminate the password anyway
+
+ if passlen1>0 and passlen2>0 then maybe its a NT box
+ and its setting passlen2 to some random value which
+ really stuffs things up. we need to fix that one. */
+
+ if (passlen1 > 0 && passlen2 > 0 && passlen2 != 24 &&
+ passlen2 != 1) {
passlen2 = 0;
+ }
}
-
+
/* check for nasty tricks */
- if (passlen1 > MAX_PASS_LEN || passlen1 > smb_bufrem(inbuf, p)) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ if (passlen1 > MAX_PASS_LEN
+ || passlen1 > smb_bufrem(req->inbuf, p)) {
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_INVALID_PARAMETER));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
- if (passlen2 > MAX_PASS_LEN || passlen2 > smb_bufrem(inbuf, p+passlen1)) {
- return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+ if (passlen2 > MAX_PASS_LEN
+ || passlen2 > smb_bufrem(req->inbuf, p+passlen1)) {
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_INVALID_PARAMETER));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
/* Save the lanman2 password and the NT md4 password. */
-
+
if ((doencrypt) && (passlen1 != 0) && (passlen1 != 24)) {
doencrypt = False;
}
if (doencrypt) {
lm_resp = data_blob(p, passlen1);
nt_resp = data_blob(p+passlen1, passlen2);
- } else {
- pstring pass;
- BOOL unic=SVAL(inbuf, smb_flg2) & FLAGS2_UNICODE_STRINGS;
-
-#if 0
- /* This was the previous fix. Not sure if it's still valid. JRA. */
- if ((ra_type == RA_WINNT) && (passlen2 == 0) && unic && passlen1) {
- /* NT4.0 stuffs up plaintext unicode password lengths... */
- srvstr_pull(inbuf, pass, smb_buf(inbuf) + 1,
- sizeof(pass), passlen1, STR_TERMINATE);
-#endif
+ } else if (lp_security() != SEC_SHARE) {
+ char *pass = NULL;
+ bool unic= smb_flag2 & FLAGS2_UNICODE_STRINGS;
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);
+ (void)srvstr_pull_talloc(talloc_tos(),
+ req->inbuf,
+ req->flags2,
+ &pass,
+ smb_buf(req->inbuf),
+ passlen1,
+ STR_TERMINATE|STR_ASCII);
} else {
- srvstr_pull(inbuf, pass, smb_buf(inbuf),
- sizeof(pass), unic ? passlen2 : passlen1,
- STR_TERMINATE);
+ (void)srvstr_pull_talloc(talloc_tos(),
+ req->inbuf,
+ req->flags2,
+ &pass,
+ smb_buf(req->inbuf),
+ unic ? passlen2 : passlen1,
+ STR_TERMINATE);
+ }
+ if (!pass) {
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_INVALID_PARAMETER));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
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);
-
- /* 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
- extended security. Windows NT 4 and 2003 use this string to store
- the native lanman string. Windows 9x does not include a string here
- at all so we have to check if we have any extra bytes left */
-
- 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);
- else
+ p += srvstr_pull_buf(req->inbuf, req->flags2, user, p,
+ sizeof(user), STR_TERMINATE);
+ p += srvstr_pull_buf(req->inbuf, req->flags2, domain, p,
+ sizeof(domain), STR_TERMINATE);
+ p += srvstr_pull_buf(req->inbuf, req->flags2, native_os,
+ p, sizeof(native_os), STR_TERMINATE);
+ p += srvstr_pull_buf(req->inbuf, req->flags2,
+ 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 extended security. Windows NT 4
+ * and 2003 use this string to store the native lanman string.
+ * Windows 9x does not include a string here at all so we have
+ * to check if we have any extra bytes left */
+
+ byte_count = SVAL(req->inbuf, smb_vwv13);
+ if ( PTR_DIFF(p, save_p) < byte_count) {
+ p += srvstr_pull_buf(req->inbuf, req->flags2,
+ primary_domain, p,
+ sizeof(primary_domain),
+ STR_TERMINATE);
+ } else {
fstrcpy( primary_domain, "null" );
+ }
- DEBUG(3,("Domain=[%s] NativeOS=[%s] NativeLanMan=[%s] PrimaryDomain=[%s]\n",
- domain, native_os, native_lanman, primary_domain));
+ DEBUG(3,("Domain=[%s] NativeOS=[%s] NativeLanMan=[%s] "
+ "PrimaryDomain=[%s]\n",
+ domain, native_os, native_lanman, primary_domain));
if ( ra_type == RA_WIN2K ) {
if ( strlen(native_lanman) == 0 )
}
- if (SVAL(inbuf,smb_vwv4) == 0) {
+ if (SVAL(req->inbuf,smb_vwv4) == 0) {
setup_new_vc_session();
}
- DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n", domain, user, get_remote_machine_name()));
+ DEBUG(3,("sesssetupX:name=[%s]\\[%s]@[%s]\n",
+ domain, user, get_remote_machine_name()));
if (*user) {
if (global_spnego_negotiated) {
-
- /* 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_UNSUCCESSFUL);
+
+ /* 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"));
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
fstrcpy(sub_user, user);
-
- /* setup the string used by %U */
- sub_set_smb_name(user);
} else {
fstrcpy(sub_user, lp_guestaccount());
}
sub_set_smb_name(sub_user);
reload_services(True);
-
+
if (lp_security() == SEC_SHARE) {
/* in share level we should ignore any passwords */
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;
}
-
+
if (!*user) {
nt_status = check_guest_password(&server_info);
} 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);
+ DEBUG(0, ("reply_sesssetup_and_X: Attempted encrypted "
+ "session setup without negprot denied!\n"));
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
- nt_status = make_user_info_for_reply_enc(&user_info, user, domain,
- lm_resp, nt_resp);
+ nt_status = make_user_info_for_reply_enc(&user_info, user,
+ domain,
+ lm_resp, nt_resp);
if (NT_STATUS_IS_OK(nt_status)) {
- nt_status = negprot_global_auth_context->check_ntlm_password(negprot_global_auth_context,
- user_info,
- &server_info);
+ nt_status = negprot_global_auth_context->check_ntlm_password(
+ negprot_global_auth_context,
+ user_info,
+ &server_info);
}
} else {
struct auth_context *plaintext_auth_context = NULL;
const uint8 *chal;
- if (NT_STATUS_IS_OK(nt_status = make_auth_context_subsystem(&plaintext_auth_context))) {
- chal = plaintext_auth_context->get_ntlm_challenge(plaintext_auth_context);
-
- if (!make_user_info_for_reply(&user_info,
+
+ nt_status = make_auth_context_subsystem(
+ &plaintext_auth_context);
+
+ if (NT_STATUS_IS_OK(nt_status)) {
+ chal = plaintext_auth_context->get_ntlm_challenge(
+ plaintext_auth_context);
+
+ if (!make_user_info_for_reply(&user_info,
user, domain, chal,
plaintext_password)) {
nt_status = NT_STATUS_NO_MEMORY;
}
-
+
if (NT_STATUS_IS_OK(nt_status)) {
- nt_status = plaintext_auth_context->check_ntlm_password(plaintext_auth_context,
- user_info,
- &server_info);
-
- (plaintext_auth_context->free)(&plaintext_auth_context);
+ nt_status = plaintext_auth_context->check_ntlm_password(
+ plaintext_auth_context,
+ user_info,
+ &server_info);
+
+ (plaintext_auth_context->free)(
+ &plaintext_auth_context);
}
}
}
free_user_info(&user_info);
-
+
if (!NT_STATUS_IS_OK(nt_status)) {
- nt_status = do_map_to_guest(nt_status, &server_info, user, domain);
+ nt_status = do_map_to_guest(nt_status, &server_info,
+ user, domain);
}
-
+
if (!NT_STATUS_IS_OK(nt_status)) {
data_blob_free(&nt_resp);
data_blob_free(&lm_resp);
data_blob_clear_free(&plaintext_password);
- return ERROR_NT(nt_status_squash(nt_status));
+ reply_nterror(req, nt_status_squash(nt_status));
+ END_PROFILE(SMBsesssetupX);
+ return;
+ }
+
+ /* Ensure we can't possible take a code path leading to a
+ * null defref. */
+ if (!server_info) {
+ reply_nterror(req, nt_status_squash(NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
+ }
+
+ nt_status = create_local_token(server_info);
+ if (!NT_STATUS_IS_OK(nt_status)) {
+ DEBUG(10, ("create_local_token failed: %s\n",
+ nt_errstr(nt_status)));
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
+ data_blob_clear_free(&plaintext_password);
+ reply_nterror(req, nt_status_squash(nt_status));
+ END_PROFILE(SMBsesssetupX);
+ return;
}
if (server_info->user_session_key.data) {
- session_key = data_blob(server_info->user_session_key.data, server_info->user_session_key.length);
+ 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);
+ reply_outbuf(req, 3, 0);
if (Protocol >= PROTOCOL_NT1) {
- char *p = smb_buf( outbuf );
- p += add_signature( outbuf, p );
- set_message_end( outbuf, p );
+ push_signature(&req->outbuf);
/* perhaps grab OS version here?? */
}
-
+
if (server_info->guest) {
- SSVAL(outbuf,smb_vwv2,1);
+ SSVAL(req->outbuf,smb_vwv2,1);
}
/* 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 (lp_security() == SEC_SHARE) {
+ sess_vuid = UID_FIELD_INVALID;
+ data_blob_free(&session_key);
+ TALLOC_FREE(server_info);
+ } else {
+ /* Ignore the initial vuid. */
+ sess_vuid = register_initial_vuid();
+ if (sess_vuid == UID_FIELD_INVALID) {
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
+ data_blob_free(&session_key);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
+ }
+ /* register_existing_vuid keeps the server info */
+ sess_vuid = register_existing_vuid(sess_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);
+ data_blob_free(&session_key);
+ reply_nterror(req, nt_status_squash(
+ NT_STATUS_LOGON_FAILURE));
+ END_PROFILE(SMBsesssetupX);
+ return;
+ }
+
+ /* current_user_info is changed on new vuid */
+ reload_services( True );
- if (sess_vuid == -1) {
- return ERROR_NT(NT_STATUS_LOGON_FAILURE);
+ sessionsetup_start_signing_engine(server_info, req->inbuf);
}
- /* current_user_info is changed on new vuid */
- reload_services( True );
+ data_blob_free(&nt_resp);
+ data_blob_free(&lm_resp);
- if (!server_info->guest && !srv_signing_started() && !srv_check_sign_mac(inbuf, True)) {
- exit_server("reply_sesssetup_and_X: bad smb signature");
- }
+ SSVAL(req->outbuf,smb_uid,sess_vuid);
+ SSVAL(req->inbuf,smb_uid,sess_vuid);
- SSVAL(outbuf,smb_uid,sess_vuid);
- SSVAL(inbuf,smb_uid,sess_vuid);
-
if (!done_sesssetup)
max_send = MIN(max_send,smb_bufsize);
-
+
done_sesssetup = True;
-
+
END_PROFILE(SMBsesssetupX);
- return chain_reply(inbuf,outbuf,length,bufsize);
+ chain_reply(req);
+ return;
}