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diff --git a/xpa.h b/xpa.h
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+++ b/xpa.h
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+/*
+ * Copyright (c) 1999-2003 Smithsonian Astrophysical Observatory
+ */
+
+/*
+ *
+ * xpa.h - include file for the X Public Access mechanism
+ *
+ */
+
+#ifndef __xpa_h
+#define __xpa_h
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <prsetup.h>
+#if HAVE_MINGW32
+#include <winsock2.h>
+#endif
+
+#define XPA_MAJOR_VERSION 2
+#define XPA_MINOR_VERSION 1
+#define XPA_PATCH_LEVEL 18
+#define XPA_VERSION "2.1.18"
+
+/* #define XPA_DEBUG 1 */
+#ifdef XPA_DEBUG
+#define FPRINTF(x) fprintf x
+#define PERROR(x) perror x
+#else
+#define FPRINTF(x)
+#define PERROR(x)
+#endif
+
+/* types of xpa request */
+#define XPA_SET 1
+#define XPA_GET 2
+#define XPA_INFO 3
+#define XPA_ACCESS 4
+/* not actually commands but ... */
+#define XPA_DATA 5
+#define XPA_ACCEPT 6
+#define XPA_NAGLE 7
+
+/* this is the number of actual commands we have above */
+#define XPA_CMDS 4
+
+/* comm modes */
+#define COMM_RESERVED 1
+#define COMM_CONNECT 2
+
+/* the ever-present */
+#ifndef SZ_LINE
+#define SZ_LINE 4096
+#endif
+
+/* limit the length of the name and xclass strings */
+/* at least 2 of these should fit into SZ_LINE with lots of room to spare */
+#define XPA_NAMELEN 1024
+
+/* defines the types of callback procedure we use */
+typedef int (*SendCb)(
+#ifdef ANSI_FUNC
+ void *client_data,
+ void *call_data,
+ char *paramlist,
+ char **buf,
+ size_t *len
+#endif
+);
+
+typedef int (*ReceiveCb)(
+#ifdef ANSI_FUNC
+ void *client_data,
+ void *call_data,
+ char *paramlist,
+ char *buf,
+ size_t len
+#endif
+);
+
+typedef int (*InfoCb)(
+#ifdef ANSI_FUNC
+ void *client_data,
+ void *call_data,
+ char *paramlist
+#endif
+);
+
+typedef void *(*SelAdd)(
+#ifdef ANSI_FUNC
+ void *client_data,
+ int fd
+#endif
+);
+
+typedef void (*SelDel)(
+#ifdef ANSI_FUNC
+ void *client_data
+#endif
+);
+
+typedef void (*SelOn)(
+#ifdef ANSI_FUNC
+ void *client_data
+#endif
+);
+
+typedef void (*SelOff)(
+#ifdef ANSI_FUNC
+ void *client_data
+#endif
+);
+
+typedef void (*MyFree)(
+#ifdef ANSI_FUNC
+ void *buf
+#endif
+);
+
+typedef void Sigfunc(
+#ifdef ANSI_FUNC
+ int
+#endif
+);
+
+/*
+ *
+ *
+ * xpa access control record structure
+ *
+ */
+typedef struct aclrec{
+ struct aclrec *next;
+ char *xclass;
+ char *name;
+ unsigned int ip;
+ char *acl;
+ int flag;
+} *XACL, XACLRec;
+
+/*
+ *
+ *
+ * port management record structure
+ *
+ */
+typedef struct portrec{
+ struct portrec *next;
+ char *xclass;
+ char *name;
+ int port;
+} *PORT, PORTRec;
+
+/*
+ *
+ *
+ * xpa name server management
+ *
+ */
+typedef struct nsrec{
+ struct nsrec *next;
+ char *method;
+ int nxpa;
+ int nproxy;
+ char *host;
+ int fd;
+ FILE *in;
+ FILE *out;
+ /* for AF_INET */
+ unsigned int ip;
+ int port;
+ /* for AF_UNIX */
+ char *name;
+} *NS, NSRec;
+
+/*
+ *
+ *
+ * xpa communication structure for each connection
+ *
+ */
+typedef struct xpacommrec{
+ struct xpacommrec *next;
+ int status;
+ int message;
+ int n;
+ int cmd;
+ int mode;
+ int telnet;
+ int usebuf;
+ int useacl;
+ char *id;
+ char *info;
+ char *target;
+ char *paramlist;
+ int cmdfd;
+ int datafd;
+ char *cendian;
+ int ack;
+ /* buf and len passed to callbacks */
+ char *buf;
+ size_t len;
+ /* for AF_INET */
+ unsigned int cmdip;
+ int cmdport;
+ int dataport;
+ /* for AF_UNIX */
+ char *cmdname;
+ char *dataname;
+ int acl[XPA_CMDS+1];
+ /* for handling fd's in non-select event loops */
+ void *selcptr; /* cmdfd struct for seldel */
+ void *seldptr; /* datafd struct for seldel */
+ /* pointer to associated name server */
+ struct nsrec *ns;
+ /* myfree routine */
+ MyFree myfree;
+ void *myfree_ptr;
+} *XPAComm, XPACommRec;
+
+/*
+ *
+ *
+ * clipboard record structure
+ *
+ */
+typedef struct cliprec{
+ struct cliprec *next;
+ unsigned int ip;
+ char *name;
+ char *value;
+} *XPAClip, XPAClipRec;
+
+/*
+ *
+ * record struct for receiving data from stdin
+ *
+ */
+typedef struct xpainputrec{
+ struct xpainputrec *next;
+ size_t start;
+ size_t end;
+ size_t bytes;
+ char *buf;
+} *XPAInput, XPAInputRec;
+
+/*
+ *
+ *
+ * xpa command record structure
+ *
+ */
+typedef struct xpacmdrec{
+ struct xpacmdrec *next;
+ struct xparec *xpa;
+ char *name;
+ char *help;
+ int ntokens;
+ /* send callback info */
+ SendCb send_callback;
+ void *send_data;
+ int send_mode;
+ /* receive callback info */
+ ReceiveCb receive_callback;
+ void *receive_data;
+ int receive_mode;
+} *XPACmd, XPACmdRec;
+
+/*
+ *
+ *
+ * xpa client record structure
+ *
+ */
+typedef struct xpaclientrec{
+ struct xpaclientrec *next;
+ int status;
+ char *id;
+ char *xtemplate;
+ int type;
+ char *xclass;
+ char *name;
+ char *method;
+ char *info;
+ char *dataname;
+ unsigned int ip;
+ int cmdfd;
+ int datafd;
+ int mode;
+ int nsproxy;
+ /* xpaget parameters */
+ char **bufptr;
+ size_t *lenptr;
+ size_t bufsize;
+ int fd;
+ /* xpaset parameters */
+ char *buf;
+ size_t len;
+ size_t bytes;
+ /* fork parameters */
+ pid_t pid;
+ /* common parameters */
+ char **nameptr;
+ char **errptr;
+} *XPAClient, XPAClientRec;
+
+/*
+ *
+ *
+ * main xpa record structure
+ *
+ * explanation of send_mode and receive_mode flags:
+ *
+ * receive-specific callback modes:
+ *
+ * r (raw) -- don't read data into buf (callback will read)
+ *
+ * general callback modes:
+ *
+ * r (raw) -- write raw data without protocol info to client
+ * s (save) -- 's' save passed buf (don't free it)
+ *
+ */
+typedef struct xparec{
+ /* xpa version */
+ char *version;
+ /* status of this xpa */
+ int status;
+ /* "g", "s", "i" are server types; "c" for client */
+ char *type;
+ /*
+ * THE SERVER SIDE
+ */
+ struct xparec *next;
+ char *xclass;
+ char *name;
+ char *help;
+ /* send callback info */
+ SendCb send_callback;
+ void *send_data;
+ int send_mode;
+ /* receive callback info */
+ ReceiveCb receive_callback;
+ void *receive_data;
+ int receive_mode;
+ /* info callback info */
+ InfoCb info_callback;
+ void *info_data;
+ int info_mode;
+ /* list of sub-commands for this access point */
+ XPACmd commands;
+ /* communication info */
+ int fd; /* listening socket file descriptor */
+ char *method; /* method string: host:ip or unix_filename */
+ NS nshead; /* name servers associated with this access point */
+ XPAComm commhead; /* linked list of communcation records */
+ XPAClip cliphead; /* linked list of cliboard records */
+ char *filename; /* file name (unix sockets) for listening */
+ char *sendian; /* endian-ness of server */
+ /* request-specific info */
+ XPAComm comm; /* current comm if we are processing a request */
+ /* select loop info */
+ SelDel seldel; /* routine to remove xpa socket from select loop */
+ SelAdd seladd; /* routine to add xpa command sockets to select loop */
+ SelOn selon; /* routine to enable xpa command sockets */
+ SelOff seloff; /* routine to disable xpa command sockets */
+ void *selptr; /* additional info for seldelete() */
+ /*
+ * THE CLIENT SIDE
+ */
+ int persist; /* flag whether this is a persistent client */
+ int nclient; /* number of clients -- used in processing headers */
+ int client_mode; /* global client mode */
+ XPAClient clienthead; /* linked list of active clients */
+ int ifd; /* input fd for XPASetFd() */
+ size_t inpbytes; /* total number of bytes in input lists */
+ XPAInput inphead; /* linked list of input structs */
+} *XPA, XPARec;
+
+/* macros to access the xpa struct */
+#define xpa_name(xpa) ((xpa)->name)
+#define xpa_class(xpa) ((xpa)->xclass)
+#define xpa_method(xpa) ((xpa)->method)
+#define xpa_sendian(xpa) ((xpa)->sendian)
+#define xpa_comm(xpa) (xpa&&(xpa)->comm?(xpa)->comm:NULL)
+#define xpa_cendian(xpa) (((xpa)->comm&&(xpa)->comm->cendian)?(xpa)->comm->cendian:"?")
+#define xpa_cmdfd(xpa) ((xpa)->comm?(xpa)->comm->cmdfd:-1)
+#define xpa_datafd(xpa) ((xpa)->comm?(xpa)->comm->datafd:-1)
+#define xpa_ack(xpa) ((xpa)->comm?(xpa)->comm->ack:1)
+#define xpa_status(xpa) ((xpa)->comm?(xpa)->comm->status:0)
+#define xpa_id(xpa) (((xpa)->comm&&(xpa)->comm->id)?(xpa)->comm->id:"?")
+
+extern char *xpaMessbuf[];
+
+_PRbeg
+
+XPA XPAListHead _PRx((void));
+void XPAListAdd _PRx((XPA *head, XPA xpa));
+void XPAListDel _PRx((XPA *head, XPA xpa));
+int XPAActive _PRx((XPA xpa, XPAComm comm, int flag));
+int XPAActiveFd _PRx((int fd));
+int XPAAddSelect _PRx((XPA xpa, fd_set *readfdsptr));
+int XPAProcessSelect _PRx((fd_set *readfdsptr, int maxreq));
+void XPACloseData _PRx((XPA xpa, XPAComm comm));
+int XPAHandler _PRx((XPA xpa, int fd));
+void XPAMode _PRx((char *mode, int *flag, char *name, int mask, int def));
+int XPAEndian _PRx((void));
+char *XPATmpdir _PRx((void));
+void XPACleanup _PRx((void));
+int XPASetBuf _PRx((XPA xpa, char *buf, size_t len, int xcopy));
+int XPASetFree _PRx((XPA xpa, MyFree myfree, void *myfree_ptr));
+int XPAShortTimeout _PRx((void));
+int XPALongTimeout _PRx((void));
+int XPASendLTimeout _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+int XPAReceiveLTimeout _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPASendSTimeout _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+int XPAReceiveSTimeout _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPADebug _PRx((void));
+int XPASigusr1 _PRx((void));
+int XPAVerbosity _PRx((void));
+void XPAInitEnv _PRx((void));
+void XPAParseName _PRx((char *xpaname, char *xclass, char *name, int len));
+int XPAParseIpPort _PRx((char *host, unsigned int *ip, unsigned short *port));
+int XPAParseUnixSocket _PRx((char *host));
+int _XPAValid _PRx((XPA head, XPA xpa, char *type));
+int XPAValid _PRx((XPA xpa));
+char *XPATimestamp _PRx((void));
+int XPAError _PRx((XPA xpa, char *s));
+int XPAOK _PRx((XPA xpa));
+int XPAMessage _PRx((XPA xpa, char *s));
+char *XPAArgvParamlist _PRx((int argc, char **argv, int start));
+int XPAMethod _PRx((char *method));
+int XPAAccess _PRx((XPA xpa, char *xtemplate, char *paramlist, char *mode,
+ char **names, char **messages, int n));
+int XPANSLookup _PRx((XPA xpa, char *tname, char *ttype,
+ char ***xclasses, char ***names,
+ char ***methods, char ***infs));
+int XPANSClose _PRx((XPA xpa, NS ns));
+int XPANSKeepAlive _PRx((XPA xpa, int type));
+int XPANSAdd _PRx((XPA xpa, char *host, char *mode));
+int XPANSDel _PRx((XPA xpa, char *host, char *mode));
+int XPAVersionCheck _PRx((char *serv, char *nsv));
+void XPAVersionWarn _PRx((char *myv, char *nsv));
+char *XPANSMethod _PRx((char *host, int flag));
+XPA XPANew _PRx((char *xclass, char *name, char *help,
+ SendCb send_callback, void *send_data, char *send_mode,
+ ReceiveCb rec_callback, void *rec_data, char *rec_mode));
+int XPAFree _PRx((XPA xpa));
+XPA XPAInfoNew _PRx((char *xclass, char *name,
+ InfoCb info_callback, void *info_data, char *info_mode));
+int XPAPoll _PRx((int msec, int maxreq));
+int XPAMainLoop _PRx((void));
+void XPASleep _PRx((int msec));
+void XPAAtExit _PRx((void));
+/* command.c */
+void XPAInitReserved _PRx((void));
+void XPAFreeReserved _PRx((void));
+XPACmd XPACmdLookupReserved _PRx((XPA xpa, char *lbuf, int *lp));
+XPACmd XPACmdLookup _PRx((XPA xpa, char *lbuf, int *lp));
+int XPAReceiveCommands _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPASendCommands _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+XPA XPACmdNew _PRx((char *xclass, char *name));
+XPACmd XPACmdAdd _PRx((XPA xpa, char *name, char *help,
+ SendCb send_callback, void *send_data, char *send_mode,
+ ReceiveCb rec_callback, void *rec_data, char *rec_mode));
+int XPACmdDel _PRx((XPA xpa, XPACmd cmd));
+int XPACmdInternalReceive _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPACmdInternalSend _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+XPA XPAGetReserved _PRx((void));
+int XPAMtype _PRx((void));
+/* client.c */
+int XPAClientAddSelect _PRx((XPA xpa,
+ fd_set *readfdsptr, fd_set *writefdsptr));
+int XPAClientProcessSelect _PRx((XPA xpa,
+ fd_set *readfdsptr, fd_set *writefdsptr,
+ int maxreq));
+XPA XPAOpen _PRx((char *mode));
+void XPAClose _PRx((XPA xpa));
+int XPAGet _PRx((XPA xpa, char *xtemplate,
+ char *paramlist, char *mode,
+ char **bufs, size_t *lens, char **names, char **errs, int n));
+int XPAGetFd _PRx((XPA xpa, char *xtemplate,
+ char *paramlist, char *mode,
+ int *fds, char **names, char **errs, int n));
+int XPASet _PRx((XPA xpa, char *xtemplate,
+ char *paramlist, char *mode,
+ char *buf, size_t len, char **names, char **errs, int n));
+int XPASetFd _PRx((XPA xpa, char *xtemplate,
+ char *paramlist, char *mode,
+ int fd, char **names, char **errs, int n));
+int XPAInfo _PRx((XPA xpa, char *xtemplate,
+ char *paramlist, char *mode,
+ char **names, char **errs, int n));
+int XPAClientValid _PRx((XPA xpa));
+void XPASaveJmp _PRx((void *env));
+
+
+/* acl.c */
+int XPAReceiveAcl _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPASendAcl _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+int XPAAclEdit _PRx((char *lbuf));
+int XPAAclAdd _PRx((char *lbuf));
+int XPAAclDel _PRx((XACL acl));
+void XPAAclFree _PRx((void));
+int XPAAclNew _PRx((char *aname, int flag));
+int XPAAclCheck _PRx((XPA xpa, unsigned int ip, char *acl));
+/* port.c */
+int XPAPortEdit _PRx((char *lbuf));
+int XPAPortAdd _PRx((char *lbuf));
+int XPAPortDel _PRx((PORT port));
+void XPAPortFree _PRx((void));
+int XPAPortNew _PRx((char *aname, int flag));
+int XPAPort _PRx((XPA xpa));
+/* remote.c */
+int XPAReceiveRemote _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPASendRemote _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+int XPARemote _PRx((XPA xpa, char *host, char *acl, char *mode));
+/* clipboard.c */
+int XPAReceiveClipboard _PRx((void *client_data, void *call_data,
+ char *paramlist, char *buf, size_t len));
+int XPASendClipboard _PRx((void *client_data, void *call_data,
+ char *paramlist, char **buf, size_t *len));
+int ClipBoardFree _PRx((XPA xpa, XPAClip clip));
+/* xt.c */
+int XPAXtAddInput _PRx((void *app, XPA xpa));
+/* tcl.c */
+int XPATclAddInput _PRx((XPA xpa));
+int Tclxpa_Init _PRx((void *vinterp));
+/* gtkloop.c */
+int XPAGtkAddInput _PRx((XPA xpa));
+/* xpaio.c */
+int XPAGets _PRx((XPA xpa, int fd, char *buf, int len, int timeout));
+int XPAPuts _PRx((XPA xpa, int fd, char *buf, int timeout));
+int XPAGetBuf _PRx((XPA xpa, int fd, char **buf, size_t *len, int timeout));
+int XPAPutBuf _PRx((XPA xpa, int fd, char *buf, size_t len, int timeout));
+int XPAIOCallsXPA _PRx((int flag));
+char *XPALevelSpaces _PRx((void));
+void XPALevelSet _PRx((int lev));
+int XPALevelGet _PRx((void));
+
+_PRend
+
+#endif /* __xpa.h */
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