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Edit File: ICEconn.h

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Author: Ralph Mor, X Consortium
******************************************************************************/

#ifndef _ICECONN_H_
#define _ICECONN_H_

#include <X11/ICE/ICElib.h>

/*
 * Data structures for ICE connection object
 */

typedef struct _IceSavedReplyWait {
    IceReplyWaitInfo		*reply_wait;
    Bool			reply_ready;
    struct _IceSavedReplyWait	*next;
} _IceSavedReplyWait;

typedef struct _IcePingWait {
    IcePingReplyProc		ping_reply_proc;
    IcePointer			client_data;
    struct _IcePingWait 	*next;
} _IcePingWait;

typedef struct {
    char		*vendor;
    char		*release;
    int			version_count;
    IcePoVersionRec	*version_recs;
    int			auth_count;
    char		**auth_names;
    IcePoAuthProc	*auth_procs;
    IceIOErrorProc	io_error_proc;
} _IcePoProtocol;

typedef struct {
    char			*vendor;
    char			*release;
    int				version_count;
    IcePaVersionRec		*version_recs;
    IceProtocolSetupProc	protocol_setup_proc;
    IceProtocolActivateProc	protocol_activate_proc;
    int				auth_count;
    char			**auth_names;
    IcePaAuthProc		*auth_procs;
    IceHostBasedAuthProc	host_based_auth_proc;
    IceIOErrorProc		io_error_proc;
} _IcePaProtocol;

typedef struct {
    char		*protocol_name;
    _IcePoProtocol	*orig_client;
    _IcePaProtocol   	*accept_client;
} _IceProtocol;

typedef struct {
    Bool			in_use;
    int				my_opcode;
    _IceProtocol		*protocol;
    IcePointer			client_data;
    Bool			accept_flag;
    union {
	IcePaProcessMsgProc	accept_client;
	IcePoProcessMsgProc	orig_client;
    } process_msg_proc;
} _IceProcessMsgInfo;

typedef struct {
    int		his_version_index;
    int		my_version_index;
    char	*his_vendor;
    char	*his_release;
    char	my_auth_index;
    IcePointer 	my_auth_state;
    Bool	must_authenticate;
} _IceConnectToMeInfo;

typedef struct {
    int		his_opcode;
    int		my_opcode;
    int		his_version_index;
    int		my_version_index;
    char	*his_vendor;
    char	*his_release;
    char	my_auth_index;
    IcePointer 	my_auth_state;
    Bool	must_authenticate;
} _IceProtoSetupToMeInfo;

typedef struct {
    Bool 	auth_active;
    char	my_auth_index;
    IcePointer 	my_auth_state;
} _IceConnectToYouInfo;

typedef struct {
    int		my_opcode;
    int		my_auth_count;
    int		*my_auth_indices;
    Bool 	auth_active;
    char	my_auth_index;
    IcePointer	my_auth_state;
} _IceProtoSetupToYouInfo;

struct _IceConn {

unsigned int io_ok : 1;		     /* did an IO error occur? */
    unsigned int swap : 1;  		     /* do we need to swap on reads? */
    unsigned int waiting_for_byteorder : 1;  /* waiting for a ByteOrder msg? */
    unsigned int skip_want_to_close : 1;     /* avoid shutdown negotiation? */
    unsigned int want_to_close : 1;	     /* did we send a WantToClose? */
    unsigned int free_asap : 1;		     /* free as soon as possible */
    unsigned int unused1 : 2;		     /* future use */
    unsigned int unused2 : 8;		     /* future use */

IceConnectStatus connection_status; /* pending, accepted, rejected */

unsigned char my_ice_version_index; /* which version are we using? */

struct _XtransConnInfo *trans_conn; /* transport connection object */
    unsigned long send_sequence;     	/* Sequence # of last msg sent */
    unsigned long receive_sequence;    	/* Sequence # of last msg received */

char *connection_string;		/* network connection string */
    char *vendor;			/* other client's vendor */
    char *release;			/* other client's release */

char *inbuf;			/* Input buffer starting address */
    char *inbufptr;			/* Input buffer index pointer */
    char *inbufmax;			/* Input buffer maximum+1 address */

char *outbuf;			/* Output buffer starting address */
    char *outbufptr;			/* Output buffer index pointer */
    char *outbufmax;			/* Output buffer maximum+1 address */

char *scratch;			/* scratch buffer */
    unsigned long scratch_size;		/* scratch size */

int dispatch_level;			/* IceProcessMessages dispatch level */

IcePointer context;			/* context associated with caller
					   of IceOpenConnection */

/*
     * Before we read a message, the major opcode of the message must be
     * mapped to our corresponding major opcode (the two clients can use
     * different opcodes for the same protocol).  In order to save space,
     * we keep track of the mininum and maximum major opcodes used by the
     * other client.  To get the information on how to process this message,
     * we do the following...
     *
     * processMsgInfo = iceConn->process_msg_info[
     *     message->majorOpcode - iceConn->his_min_opcode]
     *
     * Note that the number of elements in the iceConn->process_msg_info
     * array is always (iceConn->his_max_opcode - iceConn->his_min_opcode + 1).
     * We check process_msg_info->in_use to see if the opcode is being used.
     */

_IceProcessMsgInfo		*process_msg_info;
    char 			his_min_opcode;   /* [1..255] */
    char			his_max_opcode;	  /* [1..255] */

/*
     * Number of times this iceConn was returned in IceOpenConnection
     * or IceAcceptConnection.
     */

unsigned char		open_ref_count;

/*
     * Number of active protocols.
     */

unsigned char		proto_ref_count;

/*
     * If this ICE connection was created with IceAcceptConnection,
     * the listen_obj field is set to the listen object.  Otherwise,
     * the listen_obj field is NULL.
     */

IceListenObj		listen_obj;

/*
     * We need to keep track of all the replies we're waiting for.
     * Check the comments in process.c for how this works.
     */

_IceSavedReplyWait		*saved_reply_waits;

/*
     * We keep track of all Pings sent from the client.  When the Ping reply
     * arrives, we remove it from the list.
     */

_IcePingWait		*ping_waits;

/*
     * Some state for a client doing a Connection/Protocol Setup
     */

_IceConnectToYouInfo	*connect_to_you;
    _IceProtoSetupToYouInfo	*protosetup_to_you;

/*
     * Some state for a client receiving a Connection/Protocol Setup
     */

_IceConnectToMeInfo		*connect_to_me;
    _IceProtoSetupToMeInfo	*protosetup_to_me;

};

#endif /* _ICECONN_H_ */