r8472: abartlet's patch for parallel ntlmssp supporttrunk/source/smbd/sesssetup.c

(This used to be commit aab17a7095a18b243a271f8f3f824facd6932f23)

2 files changed, 94 insertions, 18 deletions

diff --git a/source3/smbd/password.c b/source3/smbd/password.c
index 2ee8c1232e..9ee721089c 100644
--- a/source3/smbd/password.c
+++ b/source3/smbd/password.c
@@ -47,7 +47,31 @@ user_struct *get_valid_user_struct(uint16 vuid)
 		return NULL;
 
 	for (usp=validated_users;usp;usp=usp->next,count++) {
-		if (vuid == usp->vuid) {
+		if (vuid == usp->vuid && usp->server_info) {
+			if (count > 10) {
+				DLIST_PROMOTE(validated_users, usp);
+			}
+			return usp;
+		}
+	}
+
+	return NULL;
+}
+
+/****************************************************************************
+ Get the user struct of a partial NTLMSSP login
+****************************************************************************/
+
+user_struct *get_partial_auth_user_struct(uint16 vuid)
+{
+	user_struct *usp;
+	int count=0;
+
+	if (vuid == UID_FIELD_INVALID)
+		return NULL;
+
+	for (usp=validated_users;usp;usp=usp->next,count++) {
+		if (vuid == usp->vuid && !usp->server_info) {
 			if (count > 10) {
 				DLIST_PROMOTE(validated_users, usp);
 			}
@@ -159,6 +183,17 @@ int register_vuid(auth_serversupplied_info *server_info, DATA_BLOB session_key,
 
 	vuser->vuid = next_vuid;
 
+	if (!server_info) {
+		next_vuid++;
+		num_validated_vuids++;
+		
+		vuser->server_info = NULL;
+		
+		DLIST_ADD(validated_users, vuser);
+		
+		return vuser->vuid;
+	}
+
 	/* the next functions should be done by a SID mapping system (SMS) as
 	 * the new real sam db won't have reference to unix uids or gids
 	 */
diff --git a/source3/smbd/sesssetup.c b/source3/smbd/sesssetup.c
index 1ddd6256b3..8586ac1324 100644
--- a/source3/smbd/sesssetup.c
+++ b/source3/smbd/sesssetup.c
@@ -25,8 +25,6 @@
 
 uint32 global_client_caps = 0;
 
-static struct auth_ntlmssp_state *global_ntlmssp_state;
-
 /*
   on a logon error possibly map the error to success if "map to guest"
   is set approriately
@@ -353,6 +351,7 @@ static int reply_spnego_kerberos(connection_struct *conn,
 ***************************************************************************/
 
 static BOOL reply_spnego_ntlmssp(connection_struct *conn, char *inbuf, char *outbuf,
+				 uint16 vuid,
 				 AUTH_NTLMSSP_STATE **auth_ntlmssp_state,
 				 DATA_BLOB *ntlmssp_blob, NTSTATUS nt_status) 
 {
@@ -416,6 +415,8 @@ static BOOL reply_spnego_ntlmssp(connection_struct *conn, char *inbuf, char *out
 
 	if (!ret || !NT_STATUS_EQUAL(nt_status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
 		auth_ntlmssp_end(auth_ntlmssp_state);
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
 	}
 
 	return ret;
@@ -428,8 +429,10 @@ static BOOL reply_spnego_ntlmssp(connection_struct *conn, char *inbuf, char *out
 static int reply_spnego_negotiate(connection_struct *conn, 
 				  char *inbuf,
 				  char *outbuf,
+				  uint16 vuid,
 				  int length, int bufsize,
-				  DATA_BLOB blob1)
+				  DATA_BLOB blob1,
+				  AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
 {
 	char *OIDs[ASN1_MAX_OIDS];
 	DATA_BLOB secblob;
@@ -442,6 +445,9 @@ static int reply_spnego_negotiate(connection_struct *conn,
 
 	/* parse out the OIDs and the first sec blob */
 	if (!parse_negTokenTarg(blob1, OIDs, &secblob)) {
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
+
 		return ERROR_NT(NT_STATUS_LOGON_FAILURE);
 	}
 
@@ -473,25 +479,31 @@ static int reply_spnego_negotiate(connection_struct *conn,
 		int ret = reply_spnego_kerberos(conn, inbuf, outbuf, 
 						length, bufsize, &secblob);
 		data_blob_free(&secblob);
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
+
 		return ret;
 	}
 #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);
+	nt_status = auth_ntlmssp_start(auth_ntlmssp_state);
 	if (!NT_STATUS_IS_OK(nt_status)) {
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
+
 		return ERROR_NT(nt_status);
 	}
 
-	nt_status = auth_ntlmssp_update(global_ntlmssp_state, 
+	nt_status = auth_ntlmssp_update(*auth_ntlmssp_state, 
 					secblob, &chal);
 
 	data_blob_free(&secblob);
 
-	reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state,
+	reply_spnego_ntlmssp(conn, inbuf, outbuf, vuid, auth_ntlmssp_state,
 			     &chal, nt_status);
 		
 	data_blob_free(&chal);
@@ -505,8 +517,10 @@ static int reply_spnego_negotiate(connection_struct *conn,
 ****************************************************************************/
 
 static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
+			     uint16 vuid,
 			     int length, int bufsize,
-			     DATA_BLOB blob1)
+			     DATA_BLOB blob1,
+			     AUTH_NTLMSSP_STATE **auth_ntlmssp_state)
 {
 	DATA_BLOB auth, auth_reply;
 	NTSTATUS nt_status = NT_STATUS_INVALID_PARAMETER;
@@ -515,20 +529,27 @@ static int reply_spnego_auth(connection_struct *conn, char *inbuf, char *outbuf,
 #if 0
 		file_save("auth.dat", blob1.data, blob1.length);
 #endif
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
+
 		return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 	}
 	
-	if (!global_ntlmssp_state) {
+	if (!*auth_ntlmssp_state) {
+		/* Kill the intermediate vuid */
+		invalidate_vuid(vuid);
+
 		/* auth before negotiatiate? */
 		return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
 	}
 	
-	nt_status = auth_ntlmssp_update(global_ntlmssp_state, 
-						auth, &auth_reply);
+	nt_status = auth_ntlmssp_update(*auth_ntlmssp_state, 
+					auth, &auth_reply);
 
 	data_blob_free(&auth);
 
-	reply_spnego_ntlmssp(conn, inbuf, outbuf, &global_ntlmssp_state,
+	reply_spnego_ntlmssp(conn, inbuf, outbuf, vuid, 
+			     auth_ntlmssp_state,
 			     &auth_reply, nt_status);
 		
 	data_blob_free(&auth_reply);
@@ -553,6 +574,8 @@ static int reply_sesssetup_and_X_spnego(connection_struct *conn, char *inbuf,
 	char *p2;
 	uint16 data_blob_len = SVAL(inbuf, smb_vwv7);
 	enum remote_arch_types ra_type = get_remote_arch();
+	int vuid = SVAL(inbuf,smb_uid);
+	user_struct *vuser = NULL;
 
 	DEBUG(3,("Doing spnego session setup\n"));
 
@@ -597,16 +620,34 @@ static int reply_sesssetup_and_X_spnego(connection_struct *conn, char *inbuf,
 			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);
+		if (vuid == -1) {
+			return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+		}
+	
+		vuser = get_partial_auth_user_struct(vuid);
+	}
+
+	if (!vuser) {
+		return ERROR_NT(NT_STATUS_INVALID_PARAMETER);
+	}
+	
+	SSVAL(outbuf,smb_uid,vuid);
+	
 	if (blob1.data[0] == ASN1_APPLICATION(0)) {
 		/* its a negTokenTarg packet */
-		ret = reply_spnego_negotiate(conn, inbuf, outbuf, length, bufsize, blob1);
+		ret = reply_spnego_negotiate(conn, inbuf, outbuf, vuid, length, bufsize, blob1,
+					     &vuser->auth_ntlmssp_state);
 		data_blob_free(&blob1);
 		return ret;
 	}
 
 	if (blob1.data[0] == ASN1_CONTEXT(1)) {
 		/* its a auth packet */
-		ret = reply_spnego_auth(conn, inbuf, outbuf, length, bufsize, blob1);
+		ret = reply_spnego_auth(conn, inbuf, outbuf, vuid, length, bufsize, blob1,
+					&vuser->auth_ntlmssp_state);
 		data_blob_free(&blob1);
 		return ret;
 	}
@@ -682,7 +723,7 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
 	    (SVAL(inbuf, smb_flg2) & 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);
+			return ERROR_NT(NT_STATUS_LOGON_FAILURE);
 		}
 
 		if (SVAL(inbuf,smb_vwv4) == 0) {
@@ -843,7 +884,7 @@ int reply_sesssetup_and_X(connection_struct *conn, char *inbuf,char *outbuf,
 			/* 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);
+			return ERROR_NT(NT_STATUS_LOGON_FAILURE);
 		}
 		fstrcpy(sub_user, user);