Adding upstream version 2:4.17.12+dfsg.upstream/2%4.17.12+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 321 insertions, 0 deletions

diff --git a/source4/wrepl_server/wrepl_server.h b/source4/wrepl_server/wrepl_server.h
new file mode 100644
index 0000000..bb6c181
--- /dev/null
+++ b/source4/wrepl_server/wrepl_server.h
@@ -0,0 +1,321 @@
+/* 
+   Unix SMB/CIFS implementation.
+   
+   WINS Replication server
+   
+   Copyright (C) Stefan Metzmacher	2005
+   
+   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 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "system/network.h"
+
+struct wreplsrv_service;
+struct wreplsrv_in_connection;
+struct wreplsrv_out_connection;
+struct wreplsrv_partner;
+
+#define WREPLSRV_VALID_ASSOC_CTX	0x12345678
+#define WREPLSRV_INVALID_ASSOC_CTX	0x0000000a
+
+/*
+  state of an incoming wrepl call
+*/
+struct wreplsrv_in_call {
+	struct wreplsrv_in_connection *wreplconn;
+	struct wrepl_packet req_packet;
+	struct wrepl_packet rep_packet;
+	bool terminate_after_send;
+
+	DATA_BLOB in;
+	DATA_BLOB out;
+	struct iovec out_iov[1];
+};
+
+/*
+  state of an incoming wrepl connection
+*/
+struct wreplsrv_in_connection {
+	struct wreplsrv_in_connection *prev,*next;
+	struct stream_connection *conn;
+	struct tstream_context *tstream;
+	struct tevent_queue *send_queue;
+
+	/* our global service context */
+	struct wreplsrv_service *service;
+
+	/*
+	 * the partner that connects us,
+	 * can be NULL, when we got a connection
+	 * from an unknown address
+	 */
+	struct wreplsrv_partner *partner;
+
+	/* keep track of the assoc_ctx's */
+	struct {
+		bool stopped;
+		uint32_t our_ctx;
+		uint32_t peer_ctx;
+	} assoc_ctx;
+};
+
+/*
+  state of an outgoing wrepl connection
+*/
+struct wreplsrv_out_connection {
+	/* our global service context */
+	struct wreplsrv_service *service;
+
+	/*
+	 * the partner we connect
+	 */
+	struct wreplsrv_partner *partner;
+
+	/* keep track of the assoc_ctx's */
+	struct {
+		uint32_t our_ctx;
+		uint32_t peer_ctx;
+		uint16_t peer_major;
+	} assoc_ctx;
+
+	/* 
+	 * the client socket to the partner,
+	 * NULL if not yet connected
+	 */
+	struct wrepl_socket *sock;
+};
+
+enum winsrepl_partner_type {
+	WINSREPL_PARTNER_NONE = 0x0,
+	WINSREPL_PARTNER_PULL = 0x1,
+	WINSREPL_PARTNER_PUSH = 0x2,
+	WINSREPL_PARTNER_BOTH = (WINSREPL_PARTNER_PULL | WINSREPL_PARTNER_PUSH)
+};
+
+#define WINSREPL_DEFAULT_PULL_INTERVAL (30*60)
+#define WINSREPL_DEFAULT_PULL_RETRY_INTERVAL (30)
+
+#define WINSREPL_DEFAULT_PUSH_CHANGE_COUNT (0)
+
+/*
+ this represents one of our configured partners
+*/
+struct wreplsrv_partner {
+	struct wreplsrv_partner *prev,*next;
+
+	/* our global service context */
+	struct wreplsrv_service *service;
+
+	/* the netbios name of the partner, mostly just for debugging */
+	const char *name;
+
+	/* the ip-address of the partner */
+	const char *address;
+
+	/* 
+	 * as wins partners identified by ip-address, we need to use a specific source-ip
+	 *  when we want to connect to the partner
+	 */
+	const char *our_address;
+
+	/* the type of the partner, pull, push or both */
+	enum winsrepl_partner_type type;
+
+	/* pull specific options */
+	struct {
+		/* the interval between 2 pull replications to the partner */
+		uint32_t interval;
+
+		/* the retry_interval if a pull cycle failed to the partner */
+		uint32_t retry_interval;
+
+		/* the error count till the last success */
+		uint32_t error_count;
+
+		/* the status of the last pull cycle */
+		NTSTATUS last_status;
+
+		/* the timestamp of the next pull try */
+		struct timeval next_run;
+
+		/* this is a list of each wins_owner the partner knows about */
+		struct wreplsrv_owner *table;
+
+		/* the outgoing connection to the partner */
+		struct wreplsrv_out_connection *wreplconn;
+
+		/* the current pending pull cycle request */
+		struct composite_context *creq;
+
+		/* the pull cycle io params */
+		struct wreplsrv_pull_cycle_io *cycle_io;
+
+		/* the current timed_event to the next pull cycle */
+		struct tevent_timer *te;
+	} pull;
+
+	/* push specific options */
+	struct {
+		/* change count till push notification */
+		uint32_t change_count;
+
+		/* the last wins db maxVersion have reported to the partner */
+		uint64_t maxVersionID;
+
+		/* we should use WREPL_REPL_INFORM* messages to this partner */
+		bool use_inform;
+
+		/* the error count till the last success */
+		uint32_t error_count;
+
+		/* the status of the last push cycle */
+		NTSTATUS last_status;
+
+		/* the outgoing connection to the partner */
+		struct wreplsrv_out_connection *wreplconn;
+
+		/* the current push notification */
+		struct composite_context *creq;
+
+		/* the pull cycle io params */
+		struct wreplsrv_push_notify_io *notify_io;
+	} push;
+};
+
+struct wreplsrv_owner {
+	struct wreplsrv_owner *prev,*next;
+
+	/* this hold the owner_id (address), min_version, max_version and partner_type */
+	struct wrepl_wins_owner owner;
+
+	/* can be NULL if this owner isn't a configure partner */
+	struct wreplsrv_partner *partner; 
+};
+
+/*
+  state of the whole wrepl service
+*/
+struct wreplsrv_service {
+	/* the whole wrepl service is in one task */
+	struct task_server *task;
+
+	/* the time the service was started */
+	struct timeval startup_time;
+
+	/* the winsdb handle */
+	struct winsdb_handle *wins_db;
+
+	/* some configuration */
+	struct {
+		/* the wins config db handle */
+		struct ldb_context *ldb;
+
+		/* the last wins config db seqnumber we know about */
+		uint64_t seqnumber;
+
+		/* 
+		 * the interval (in secs) till an active record will be marked as RELEASED 
+		 */
+		uint32_t renew_interval;
+
+		/* 
+		 * the interval (in secs) a record remains in RELEASED state,
+		 * before it will be marked as TOMBSTONE
+		 * (also known as extinction interval)
+		 */
+		uint32_t tombstone_interval;
+
+		/* 
+		 * the interval (in secs) a record remains in TOMBSTONE state,
+		 * before it will be removed from the database.
+		 * See also 'tombstone_extra_timeout'.
+		 * (also known as extinction timeout)
+		 */
+		uint32_t tombstone_timeout;
+
+		/* 
+		 * the interval (in secs) a record remains in TOMBSTONE state,
+		 * even after 'tombstone_timeout' passes the current timestamp.
+		 * this is the minimum uptime of the wrepl service, before
+		 * we start delete tombstones. This is to prevent deletion of
+		 * tombstones, without replacte them.
+		 */
+		uint32_t tombstone_extra_timeout;
+
+		/* 
+		 * the interval (in secs) till a replica record will be verified
+		 * with the owning wins server
+		 */
+		uint32_t verify_interval;
+
+		/* 
+		 * the interval (in secs) till a do a database cleanup
+		 */
+		uint32_t scavenging_interval;
+
+		/* 
+		 * the interval (in secs) to the next periodic processing
+		 * (this is the maximun interval)
+		 */
+		uint32_t periodic_interval;
+	} config;
+
+	/* all incoming connections */
+	struct wreplsrv_in_connection *in_connections;
+
+	/* all partners (pull and push) */
+	struct wreplsrv_partner *partners;
+
+	/*
+	 * this is our local wins_owner entry, this is also in the table list
+	 * but we need a pointer to it, because we need to update it on each 
+	 * query to wreplsrv_find_owner(), as the local records can be added
+	 * to the wins.ldb from external tools and the winsserver
+	 */
+	struct wreplsrv_owner *owner;
+
+	/* this is a list of each wins_owner we know about in our database */
+	struct wreplsrv_owner *table;
+
+	/* some stuff for periodic processing */
+	struct {
+		/*
+		 * the timestamp for the next event,
+		 * this is the timstamp passed to event_add_timed()
+		 */
+		struct timeval next_event;
+
+		/* here we have a reference to the timed event the schedules the periodic stuff */
+		struct tevent_timer *te;
+	} periodic;
+
+	/* some stuff for scavenging processing */
+	struct {
+		/*
+		 * the timestamp for the next scavenging run,
+		 * this is the timstamp passed to event_add_timed()
+		 */
+		struct timeval next_run;
+
+		/*
+		 * are we currently inside a scavenging run
+		 */
+		bool processing;	
+	} scavenging;
+};
+
+struct socket_context;
+struct wrepl_name;
+#include "wrepl_server/wrepl_out_helpers.h"
+#include "wrepl_server/wrepl_server_proto.h"