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authordscho <dscho>2003-02-18 16:02:38 +0000
committerdscho <dscho>2003-02-18 16:02:38 +0000
commite22be6634da84481d97557f076a9b4c78cf8f86b (patch)
tree5ab9cf42a12799079ee2e550c93d1e43f851b716 /rfb/rfb.h
parent5ef5c81e7972e70dbc8ed57a0489b6396434ae53 (diff)
downloadlibtdevnc-e22be663.tar.gz
libtdevnc-e22be663.zip
moved include/ to rfb/
Diffstat (limited to 'rfb/rfb.h')
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diff --git a/rfb/rfb.h b/rfb/rfb.h
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+++ b/rfb/rfb.h
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+#ifndef RFB_H
+#define RFB_H
+
+/*
+ * rfb.h - header file for RFB DDX implementation.
+ */
+
+/*
+ * Copyright (C) 2002 RealVNC Ltd.
+ * OSXvnc Copyright (C) 2001 Dan McGuirk <mcguirk@incompleteness.net>.
+ * Original Xvnc code Copyright (C) 1999 AT&T Laboratories Cambridge.
+ * All Rights Reserved.
+ *
+ * This 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
+ * (at your option) any later version.
+ *
+ * This software 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 software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
+ * USA.
+ */
+
+#if(defined __cplusplus)
+extern "C"
+{
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include "rfbconfig.h"
+#undef VERSION
+#include "rfbint.h"
+#include "keysym.h"
+
+#ifdef HAVE_LIBZ
+#include <zlib.h>
+#endif
+
+#include "rfbproto.h"
+
+#ifdef HAVE_SYS_TYPES_H
+#include <sys/types.h>
+#endif
+
+#if defined(WIN32)
+#define WORDS_BIGENDIAN
+#undef Bool
+#define Bool int
+#include <sys/timeb.h>
+#include <winsock.h>
+#undef SOCKET
+#define SOCKET int
+#else
+#define max(a,b) (((a)>(b))?(a):(b))
+#ifdef HAVE_SYS_TIME_H
+#include <sys/time.h>
+#endif
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#define SOCKET int
+#ifndef Bool
+typedef int8_t Bool;
+#undef FALSE
+#define FALSE 0
+#undef TRUE
+#define TRUE -1
+#endif
+#endif
+
+typedef uint32_t KeySym;
+typedef uint32_t Pixel;
+
+#ifndef INADDR_NONE
+#define INADDR_NONE ((in_addr_t) 0xffffffff)
+#endif
+
+#ifdef HAVE_LIBPTHREAD
+#include <pthread.h>
+#if 0 /* debugging */
+#define LOCK(mutex) (fprintf(stderr,"%s:%d LOCK(%s,0x%x)\n",__FILE__,__LINE__,#mutex,&(mutex)), pthread_mutex_lock(&(mutex)))
+#define UNLOCK(mutex) (fprintf(stderr,"%s:%d UNLOCK(%s,0x%x)\n",__FILE__,__LINE__,#mutex,&(mutex)), pthread_mutex_unlock(&(mutex)))
+#define MUTEX(mutex) pthread_mutex_t (mutex)
+#define INIT_MUTEX(mutex) (fprintf(stderr,"%s:%d INIT_MUTEX(%s,0x%x)\n",__FILE__,__LINE__,#mutex,&(mutex)), pthread_mutex_init(&(mutex),NULL))
+#define TINI_MUTEX(mutex) (fprintf(stderr,"%s:%d TINI_MUTEX(%s)\n",__FILE__,__LINE__,#mutex), pthread_mutex_destroy(&(mutex)))
+#define TSIGNAL(cond) (fprintf(stderr,"%s:%d TSIGNAL(%s)\n",__FILE__,__LINE__,#cond), pthread_cond_signal(&(cond)))
+#define WAIT(cond,mutex) (fprintf(stderr,"%s:%d WAIT(%s,%s)\n",__FILE__,__LINE__,#cond,#mutex), pthread_cond_wait(&(cond),&(mutex)))
+#define COND(cond) pthread_cond_t (cond)
+#define INIT_COND(cond) (fprintf(stderr,"%s:%d INIT_COND(%s)\n",__FILE__,__LINE__,#cond), pthread_cond_init(&(cond),NULL))
+#define TINI_COND(cond) (fprintf(stderr,"%s:%d TINI_COND(%s)\n",__FILE__,__LINE__,#cond), pthread_cond_destroy(&(cond)))
+#define IF_PTHREADS(x) x
+#else
+#define LOCK(mutex) pthread_mutex_lock(&(mutex));
+#define UNLOCK(mutex) pthread_mutex_unlock(&(mutex));
+#define MUTEX(mutex) pthread_mutex_t (mutex)
+#define INIT_MUTEX(mutex) pthread_mutex_init(&(mutex),NULL)
+#define TINI_MUTEX(mutex) pthread_mutex_destroy(&(mutex))
+#define TSIGNAL(cond) pthread_cond_signal(&(cond))
+#define WAIT(cond,mutex) pthread_cond_wait(&(cond),&(mutex))
+#define COND(cond) pthread_cond_t (cond)
+#define INIT_COND(cond) pthread_cond_init(&(cond),NULL)
+#define TINI_COND(cond) pthread_cond_destroy(&(cond))
+#define IF_PTHREADS(x) x
+#endif
+#else
+#define LOCK(mutex)
+#define UNLOCK(mutex)
+#define MUTEX(mutex)
+#define INIT_MUTEX(mutex)
+#define TINI_MUTEX(mutex)
+#define TSIGNAL(cond)
+#define WAIT(cond,mutex) this_is_unsupported
+#define COND(cond)
+#define INIT_COND(cond)
+#define TINI_COND(cond)
+#define IF_PTHREADS(x)
+#endif
+
+/* end of stuff for autoconf */
+
+/* if you use pthreads, but don't define HAVE_LIBPTHREAD, the structs
+ get all mixed up. So this gives a linker error reminding you to compile
+ the library and your application (at least the parts including rfb.h)
+ with the same support for pthreads. */
+#ifdef HAVE_LIBPTHREAD
+#ifdef HAVE_ZRLE
+#define rfbInitServer rfbInitServerWithPthreadsAndZRLE
+#else
+#define rfbInitServer rfbInitServerWithPthreadsButWithoutZRLE
+#endif
+#else
+#ifdef HAVE_ZRLE
+#define rfbInitServer rfbInitServerWithoutPthreadsButWithZRLE
+#else
+#define rfbInitServer rfbInitServerWithoutPthreadsAndZRLE
+#endif
+#endif
+
+#define MAX_ENCODINGS 10
+
+struct _rfbClientRec;
+struct _rfbScreenInfo;
+struct rfbCursor;
+
+enum rfbNewClientAction {
+ RFB_CLIENT_ACCEPT,
+ RFB_CLIENT_ON_HOLD,
+ RFB_CLIENT_REFUSE
+};
+
+typedef void (*KbdAddEventProcPtr) (Bool down, KeySym keySym, struct _rfbClientRec* cl);
+typedef void (*KbdReleaseAllKeysProcPtr) (struct _rfbClientRec* cl);
+typedef void (*PtrAddEventProcPtr) (int buttonMask, int x, int y, struct _rfbClientRec* cl);
+typedef void (*SetXCutTextProcPtr) (char* str,int len, struct _rfbClientRec* cl);
+typedef struct rfbCursor* (*GetCursorProcPtr) (struct _rfbClientRec* pScreen);
+typedef Bool (*SetTranslateFunctionProcPtr)(struct _rfbClientRec* cl);
+typedef Bool (*PasswordCheckProcPtr)(struct _rfbClientRec* cl,const char* encryptedPassWord,int len);
+typedef enum rfbNewClientAction (*NewClientHookPtr)(struct _rfbClientRec* cl);
+typedef void (*DisplayHookPtr)(struct _rfbClientRec* cl);
+
+typedef struct {
+ uint32_t count;
+ Bool is16; /* is the data format short? */
+ union {
+ uint8_t* bytes;
+ uint16_t* shorts;
+ } data; /* there have to be count*3 entries */
+} rfbColourMap;
+
+/*
+ * Per-screen (framebuffer) structure. There can be as many as you wish,
+ * each serving different clients. However, you have to call
+ * rfbProcessEvents for each of these.
+ */
+
+typedef struct _rfbScreenInfo
+{
+ int width;
+ int paddedWidthInBytes;
+ int height;
+ int depth;
+ int bitsPerPixel;
+ int sizeInBytes;
+
+ Pixel blackPixel;
+ Pixel whitePixel;
+
+ /* some screen specific data can be put into a struct where screenData
+ * points to. You need this if you have more than one screen at the
+ * same time while using the same functions.
+ */
+ void* screenData;
+
+ /* The following two members are used to minimise the amount of unnecessary
+ drawing caused by cursor movement. Whenever any drawing affects the
+ part of the screen where the cursor is, the cursor is removed first and
+ then the drawing is done (this is what the sprite routines test for).
+ Afterwards, however, we do not replace the cursor, even when the cursor
+ is logically being moved across the screen. We only draw the cursor
+ again just as we are about to send the client a framebuffer update.
+
+ We need to be careful when removing and drawing the cursor because of
+ their relationship with the normal drawing routines. The drawing
+ routines can invoke the cursor routines, but also the cursor routines
+ themselves end up invoking drawing routines.
+
+ Removing the cursor (rfbUndrawCursor) is eventually achieved by
+ doing a CopyArea from a pixmap to the screen, where the pixmap contains
+ the saved contents of the screen under the cursor. Before doing this,
+ however, we set cursorIsDrawn to FALSE. Then, when CopyArea is called,
+ it sees that cursorIsDrawn is FALSE and so doesn't feel the need to
+ (recursively!) remove the cursor before doing it.
+
+ Putting up the cursor (rfbDrawCursor) involves a call to
+ PushPixels. While this is happening, cursorIsDrawn must be FALSE so
+ that PushPixels doesn't think it has to remove the cursor first.
+ Obviously cursorIsDrawn is set to TRUE afterwards.
+
+ Another problem we face is that drawing routines sometimes cause a
+ framebuffer update to be sent to the RFB client. When the RFB client is
+ already waiting for a framebuffer update and some drawing to the
+ framebuffer then happens, the drawing routine sees that the client is
+ ready, so it calls rfbSendFramebufferUpdate. If the cursor is not drawn
+ at this stage, it must be put up, and so rfbSpriteRestoreCursor is
+ called. However, if the original drawing routine was actually called
+ from within rfbSpriteRestoreCursor or rfbSpriteRemoveCursor we don't
+ want this to happen. So both the cursor routines set
+ dontSendFramebufferUpdate to TRUE, and all the drawing routines check
+ this before calling rfbSendFramebufferUpdate. */
+
+ Bool cursorIsDrawn; /* TRUE if the cursor is currently drawn */
+ Bool dontSendFramebufferUpdate; /* TRUE while removing or drawing the
+ cursor */
+
+ /* additions by libvncserver */
+
+ rfbPixelFormat rfbServerFormat;
+ rfbColourMap colourMap; /* set this if rfbServerFormat.trueColour==FALSE */
+ const char* desktopName;
+ char rfbThisHost[255];
+
+ Bool autoPort;
+ int rfbPort;
+ SOCKET rfbListenSock;
+ int maxSock;
+ int maxFd;
+ fd_set allFds;
+
+ Bool socketInitDone;
+ SOCKET inetdSock;
+ Bool inetdInitDone;
+
+ int udpPort;
+ SOCKET udpSock;
+ struct _rfbClientRec* udpClient;
+ Bool udpSockConnected;
+ struct sockaddr_in udpRemoteAddr;
+
+ int rfbMaxClientWait;
+
+ /* http stuff */
+ Bool httpInitDone;
+ Bool httpEnableProxyConnect;
+ int httpPort;
+ char* httpDir;
+ SOCKET httpListenSock;
+ SOCKET httpSock;
+
+ PasswordCheckProcPtr passwordCheck;
+ void* rfbAuthPasswdData;
+
+ /* this is the amount of milliseconds to wait at least before sending
+ * an update. */
+ int rfbDeferUpdateTime;
+ char* rfbScreen;
+ Bool rfbAlwaysShared;
+ Bool rfbNeverShared;
+ Bool rfbDontDisconnect;
+ struct _rfbClientRec* rfbClientHead;
+
+ /* cursor */
+ int cursorX, cursorY,underCursorBufferLen;
+ char* underCursorBuffer;
+ Bool dontConvertRichCursorToXCursor;
+ struct rfbCursor* cursor;
+
+ /* the frameBufferhas to be supplied by the serving process.
+ * The buffer will not be freed by
+ */
+ char* frameBuffer;
+ KbdAddEventProcPtr kbdAddEvent;
+ KbdReleaseAllKeysProcPtr kbdReleaseAllKeys;
+ PtrAddEventProcPtr ptrAddEvent;
+ SetXCutTextProcPtr setXCutText;
+ GetCursorProcPtr getCursorPtr;
+ SetTranslateFunctionProcPtr setTranslateFunction;
+
+ /* newClientHook is called just after a new client is created */
+ NewClientHookPtr newClientHook;
+ /* displayHook is called just before a frame buffer update */
+ DisplayHookPtr displayHook;
+
+#ifdef HAVE_LIBPTHREAD
+ MUTEX(cursorMutex);
+ Bool backgroundLoop;
+#endif
+
+} rfbScreenInfo, *rfbScreenInfoPtr;
+
+
+/*
+ * rfbTranslateFnType is the type of translation functions.
+ */
+
+typedef void (*rfbTranslateFnType)(char *table, rfbPixelFormat *in,
+ rfbPixelFormat *out,
+ char *iptr, char *optr,
+ int bytesBetweenInputLines,
+ int width, int height);
+
+
+/*
+ * vncauth.h - describes the functions provided by the vncauth library.
+ */
+
+#define MAXPWLEN 8
+#define CHALLENGESIZE 16
+
+extern int vncEncryptAndStorePasswd(char *passwd, char *fname);
+extern char *vncDecryptPasswdFromFile(char *fname);
+extern void vncRandomBytes(unsigned char *bytes);
+extern void vncEncryptBytes(unsigned char *bytes, char *passwd);
+
+/* region stuff */
+
+struct sraRegion;
+typedef struct sraRegion* sraRegionPtr;
+
+/*
+ * Per-client structure.
+ */
+
+typedef void (*ClientGoneHookPtr)(struct _rfbClientRec* cl);
+
+typedef struct _rfbClientRec {
+
+ /* back pointer to the screen */
+ rfbScreenInfoPtr screen;
+
+ /* private data. You should put any application client specific data
+ * into a struct and let clientData point to it. Don't forget to
+ * free the struct via clientGoneHook!
+ *
+ * This is useful if the IO functions have to behave client specific.
+ */
+ void* clientData;
+ ClientGoneHookPtr clientGoneHook;
+
+ SOCKET sock;
+ char *host;
+
+#ifdef HAVE_LIBPTHREAD
+ pthread_t client_thread;
+#endif
+ /* Possible client states: */
+ enum {
+ RFB_PROTOCOL_VERSION, /* establishing protocol version */
+ RFB_AUTHENTICATION, /* authenticating */
+ RFB_INITIALISATION, /* sending initialisation messages */
+ RFB_NORMAL /* normal protocol messages */
+ } state;
+
+ Bool reverseConnection;
+ Bool onHold;
+ Bool readyForSetColourMapEntries;
+ Bool useCopyRect;
+ int preferredEncoding;
+ int correMaxWidth, correMaxHeight;
+
+ /* The following member is only used during VNC authentication */
+ uint8_t authChallenge[CHALLENGESIZE];
+
+ /* The following members represent the update needed to get the client's
+ framebuffer from its present state to the current state of our
+ framebuffer.
+
+ If the client does not accept CopyRect encoding then the update is
+ simply represented as the region of the screen which has been modified
+ (modifiedRegion).
+
+ If the client does accept CopyRect encoding, then the update consists of
+ two parts. First we have a single copy from one region of the screen to
+ another (the destination of the copy is copyRegion), and second we have
+ the region of the screen which has been modified in some other way
+ (modifiedRegion).
+
+ Although the copy is of a single region, this region may have many
+ rectangles. When sending an update, the copyRegion is always sent
+ before the modifiedRegion. This is because the modifiedRegion may
+ overlap parts of the screen which are in the source of the copy.
+
+ In fact during normal processing, the modifiedRegion may even overlap
+ the destination copyRegion. Just before an update is sent we remove
+ from the copyRegion anything in the modifiedRegion. */
+
+ sraRegionPtr copyRegion; /* the destination region of the copy */
+ int copyDX, copyDY; /* the translation by which the copy happens */
+
+ sraRegionPtr modifiedRegion;
+
+ /* As part of the FramebufferUpdateRequest, a client can express interest
+ in a subrectangle of the whole framebuffer. This is stored in the
+ requestedRegion member. In the normal case this is the whole
+ framebuffer if the client is ready, empty if it's not. */
+
+ sraRegionPtr requestedRegion;
+
+ /* The following member represents the state of the "deferred update" timer
+ - when the framebuffer is modified and the client is ready, in most
+ cases it is more efficient to defer sending the update by a few
+ milliseconds so that several changes to the framebuffer can be combined
+ into a single update. */
+
+ struct timeval startDeferring;
+
+ /* translateFn points to the translation function which is used to copy
+ and translate a rectangle from the framebuffer to an output buffer. */
+
+ rfbTranslateFnType translateFn;
+ char *translateLookupTable;
+ rfbPixelFormat format;
+
+ /*
+ * UPDATE_BUF_SIZE must be big enough to send at least one whole line of the
+ * framebuffer. So for a max screen width of say 2K with 32-bit pixels this
+ * means 8K minimum.
+ */
+
+#define UPDATE_BUF_SIZE 30000
+
+ char updateBuf[UPDATE_BUF_SIZE];
+ int ublen;
+
+ /* statistics */
+
+ int rfbBytesSent[MAX_ENCODINGS];
+ int rfbRectanglesSent[MAX_ENCODINGS];
+ int rfbLastRectMarkersSent;
+ int rfbLastRectBytesSent;
+ int rfbCursorShapeBytesSent;
+ int rfbCursorShapeUpdatesSent;
+ int rfbCursorPosBytesSent;
+ int rfbCursorPosUpdatesSent;
+ int rfbFramebufferUpdateMessagesSent;
+ int rfbRawBytesEquivalent;
+ int rfbKeyEventsRcvd;
+ int rfbPointerEventsRcvd;
+
+#ifdef HAVE_LIBZ
+ /* zlib encoding -- necessary compression state info per client */
+
+ struct z_stream_s compStream;
+ Bool compStreamInited;
+ uint32_t zlibCompressLevel;
+
+#ifdef HAVE_LIBJPEG
+ /* tight encoding -- preserve zlib streams' state for each client */
+ //#ifdef HAVE_LIBJPEG
+ z_stream zsStruct[4];
+ Bool zsActive[4];
+ int zsLevel[4];
+ int tightCompressLevel;
+ int tightQualityLevel;
+#endif
+#endif
+
+ Bool enableLastRectEncoding; /* client supports LastRect encoding */
+ Bool enableCursorShapeUpdates; /* client supports cursor shape updates */
+ Bool enableCursorPosUpdates; /* client supports cursor position updates */
+ Bool useRichCursorEncoding; /* rfbEncodingRichCursor is preferred */
+ Bool cursorWasChanged; /* cursor shape update should be sent */
+ Bool cursorWasMoved; /* cursor position update should be sent */
+
+ Bool useNewFBSize; /* client supports NewFBSize encoding */
+ Bool newFBSizePending; /* framebuffer size was changed */
+
+#ifdef BACKCHANNEL
+ Bool enableBackChannel; /* custom channel for special clients */
+#endif
+
+ struct _rfbClientRec *prev;
+ struct _rfbClientRec *next;
+
+#ifdef HAVE_LIBPTHREAD
+ /* whenever a client is referenced, the refCount has to be incremented
+ and afterwards decremented, so that the client is not cleaned up
+ while being referenced.
+ Use the functions rfbIncrClientRef(cl) and rfbDecrClientRef(cl);
+ */
+ int refCount;
+ MUTEX(refCountMutex);
+ COND(deleteCond);
+
+ MUTEX(outputMutex);
+ MUTEX(updateMutex);
+ COND(updateCond);
+#endif
+
+#ifdef HAVE_ZRLE
+ void* zrleData;
+#endif
+
+} rfbClientRec, *rfbClientPtr;
+
+/*
+ * This macro is used to test whether there is a framebuffer update needing to
+ * be sent to the client.
+ */
+
+#define FB_UPDATE_PENDING(cl) \
+ ((!(cl)->enableCursorShapeUpdates && !(cl)->screen->cursorIsDrawn) || \
+ ((cl)->enableCursorShapeUpdates && (cl)->cursorWasChanged) || \
+ ((cl)->useNewFBSize && (cl)->newFBSizePending) || \
+ ((cl)->enableCursorPosUpdates && (cl)->cursorWasMoved) || \
+ !sraRgnEmpty((cl)->copyRegion) || !sraRgnEmpty((cl)->modifiedRegion))
+
+/*
+ * Macros for endian swapping.
+ */
+
+#define Swap16(s) ((((s) & 0xff) << 8) | (((s) >> 8) & 0xff))
+
+#define Swap24(l) ((((l) & 0xff) << 16) | (((l) >> 16) & 0xff) | \
+ (((l) & 0x00ff00)))
+
+#define Swap32(l) (((l) >> 24) | \
+ (((l) & 0x00ff0000) >> 8) | \
+ (((l) & 0x0000ff00) << 8) | \
+ ((l) << 24))
+
+
+extern char rfbEndianTest;
+
+#define Swap16IfLE(s) (rfbEndianTest ? Swap16(s) : (s))
+#define Swap24IfLE(l) (rfbEndianTest ? Swap24(l) : (l))
+#define Swap32IfLE(l) (rfbEndianTest ? Swap32(l) : (l))
+
+/* sockets.c */
+
+extern int rfbMaxClientWait;
+
+extern void rfbInitSockets(rfbScreenInfoPtr rfbScreen);
+extern void rfbDisconnectUDPSock(rfbScreenInfoPtr rfbScreen);
+extern void rfbCloseClient(rfbClientPtr cl);
+extern int ReadExact(rfbClientPtr cl, char *buf, int len);
+extern int ReadExactTimeout(rfbClientPtr cl, char *buf, int len,int timeout);
+extern int WriteExact(rfbClientPtr cl, const char *buf, int len);
+extern void rfbCheckFds(rfbScreenInfoPtr rfbScreen,long usec);
+extern int rfbConnect(rfbScreenInfoPtr rfbScreen, char* host, int port);
+extern int ConnectToTcpAddr(char* host, int port);
+extern int ListenOnTCPPort(int port);
+extern int ListenOnUDPPort(int port);
+
+/* rfbserver.c */
+
+extern rfbClientPtr pointerClient;
+
+
+/* Routines to iterate over the client list in a thread-safe way.
+ Only a single iterator can be in use at a time process-wide. */
+typedef struct rfbClientIterator *rfbClientIteratorPtr;
+
+extern void rfbClientListInit(rfbScreenInfoPtr rfbScreen);
+extern rfbClientIteratorPtr rfbGetClientIterator(rfbScreenInfoPtr rfbScreen);
+extern rfbClientPtr rfbClientIteratorNext(rfbClientIteratorPtr iterator);
+extern void rfbReleaseClientIterator(rfbClientIteratorPtr iterator);
+
+extern void rfbNewClientConnection(rfbScreenInfoPtr rfbScreen,int sock);
+extern rfbClientPtr rfbNewClient(rfbScreenInfoPtr rfbScreen,int sock);
+extern rfbClientPtr rfbNewUDPClient(rfbScreenInfoPtr rfbScreen);
+extern rfbClientPtr rfbReverseConnection(rfbScreenInfoPtr rfbScreen,char *host, int port);
+extern void rfbClientConnectionGone(rfbClientPtr cl);
+extern void rfbProcessClientMessage(rfbClientPtr cl);
+extern void rfbClientConnFailed(rfbClientPtr cl, char *reason);
+extern void rfbNewUDPConnection(rfbScreenInfoPtr rfbScreen,int sock);
+extern void rfbProcessUDPInput(rfbScreenInfoPtr rfbScreen);
+extern Bool rfbSendFramebufferUpdate(rfbClientPtr cl, sraRegionPtr updateRegion);
+extern Bool rfbSendRectEncodingRaw(rfbClientPtr cl, int x,int y,int w,int h);
+extern Bool rfbSendUpdateBuf(rfbClientPtr cl);
+extern void rfbSendServerCutText(rfbScreenInfoPtr rfbScreen,char *str, int len);
+extern Bool rfbSendCopyRegion(rfbClientPtr cl,sraRegionPtr reg,int dx,int dy);
+extern Bool rfbSendLastRectMarker(rfbClientPtr cl);
+extern Bool rfbSendNewFBSize(rfbClientPtr cl, int w, int h);
+extern Bool rfbSendSetColourMapEntries(rfbClientPtr cl, int firstColour, int nColours);
+extern void rfbSendBell(rfbScreenInfoPtr rfbScreen);
+
+void rfbGotXCutText(rfbScreenInfoPtr rfbScreen, char *str, int len);
+
+#ifdef BACKCHANNEL
+extern void rfbSendBackChannel(rfbScreenInfoPtr s,char* message,int len);
+#endif
+
+/* translate.c */
+
+extern Bool rfbEconomicTranslate;
+
+extern void rfbTranslateNone(char *table, rfbPixelFormat *in,
+ rfbPixelFormat *out,
+ char *iptr, char *optr,
+ int bytesBetweenInputLines,
+ int width, int height);
+extern Bool rfbSetTranslateFunction(rfbClientPtr cl);
+extern Bool rfbSetClientColourMap(rfbClientPtr cl, int firstColour, int nColours);
+extern void rfbSetClientColourMaps(rfbScreenInfoPtr rfbScreen, int firstColour, int nColours);
+
+/* httpd.c */
+
+extern void httpInitSockets(rfbScreenInfoPtr rfbScreen);
+extern void httpCheckFds(rfbScreenInfoPtr rfbScreen);
+
+
+
+/* auth.c */
+
+extern void rfbAuthNewClient(rfbClientPtr cl);
+extern void rfbAuthProcessClientMessage(rfbClientPtr cl);
+
+
+/* rre.c */
+
+extern Bool rfbSendRectEncodingRRE(rfbClientPtr cl, int x,int y,int w,int h);
+
+
+/* corre.c */
+
+extern Bool rfbSendRectEncodingCoRRE(rfbClientPtr cl, int x,int y,int w,int h);
+
+
+/* hextile.c */
+
+extern Bool rfbSendRectEncodingHextile(rfbClientPtr cl, int x, int y, int w,
+ int h);
+
+
+#ifdef HAVE_LIBZ
+/* zlib.c */
+
+/* Minimum zlib rectangle size in bytes. Anything smaller will
+ * not compress well due to overhead.
+ */
+#define VNC_ENCODE_ZLIB_MIN_COMP_SIZE (17)
+
+/* Set maximum zlib rectangle size in pixels. Always allow at least
+ * two scan lines.
+ */
+#define ZLIB_MAX_RECT_SIZE (128*256)
+#define ZLIB_MAX_SIZE(min) ((( min * 2 ) > ZLIB_MAX_RECT_SIZE ) ? \
+ ( min * 2 ) : ZLIB_MAX_RECT_SIZE )
+
+extern Bool rfbSendRectEncodingZlib(rfbClientPtr cl, int x, int y, int w,
+ int h);
+
+#ifdef HAVE_LIBJPEG
+/* tight.c */
+
+#define TIGHT_DEFAULT_COMPRESSION 6
+
+extern Bool rfbTightDisableGradient;
+
+extern int rfbNumCodedRectsTight(rfbClientPtr cl, int x,int y,int w,int h);
+extern Bool rfbSendRectEncodingTight(rfbClientPtr cl, int x,int y,int w,int h);
+#endif
+#endif
+
+
+/* cursor.c */
+
+typedef struct rfbCursor {
+ unsigned char *source; /* points to bits */
+ unsigned char *mask; /* points to bits */
+ unsigned short width, height, xhot, yhot; /* metrics */
+ unsigned short foreRed, foreGreen, foreBlue; /* device-independent colour */
+ unsigned short backRed, backGreen, backBlue; /* device-independent colour */
+ unsigned char *richSource; /* source bytes for a rich cursor */
+} rfbCursor, *rfbCursorPtr;
+extern unsigned char rfbReverseByte[0x100];
+
+extern Bool rfbSendCursorShape(rfbClientPtr cl/*, rfbScreenInfoPtr pScreen*/);
+extern Bool rfbSendCursorPos(rfbClientPtr cl);
+extern void rfbConvertLSBCursorBitmapOrMask(int width,int height,unsigned char* bitmap);
+extern rfbCursorPtr rfbMakeXCursor(int width,int height,char* cursorString,char* maskString);
+extern char* rfbMakeMaskForXCursor(int width,int height,char* cursorString);
+extern void MakeXCursorFromRichCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor);
+extern void MakeRichCursorFromXCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr cursor);
+extern void rfbFreeCursor(rfbCursorPtr cursor);
+extern void rfbDrawCursor(rfbScreenInfoPtr rfbScreen);
+extern void rfbUndrawCursor(rfbScreenInfoPtr rfbScreen);
+extern void rfbSetCursor(rfbScreenInfoPtr rfbScreen,rfbCursorPtr c,Bool freeOld);
+
+/* cursor handling for the pointer */
+extern void defaultPtrAddEvent(int buttonMask,int x,int y,rfbClientPtr cl);
+
+/* zrle.c */
+#ifdef HAVE_ZRLE
+extern Bool rfbSendRectEncodingZRLE(rfbClientPtr cl, int x, int y, int w,int h);
+extern void FreeZrleData(rfbClientPtr cl);
+#endif
+
+/* stats.c */
+
+extern void rfbResetStats(rfbClientPtr cl);
+extern void rfbPrintStats(rfbClientPtr cl);
+
+/* font.c */
+
+typedef struct rfbFontData {
+ unsigned char* data;
+ /*
+ metaData is a 256*5 array:
+ for each character
+ (offset,width,height,x,y)
+ */
+ int* metaData;
+} rfbFontData,* rfbFontDataPtr;
+
+int rfbDrawChar(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,int x,int y,unsigned char c,Pixel colour);
+void rfbDrawString(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,int x,int y,const char* string,Pixel colour);
+/* if colour==backColour, background is transparent */
+int rfbDrawCharWithClip(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,int x,int y,unsigned char c,int x1,int y1,int x2,int y2,Pixel colour,Pixel backColour);
+void rfbDrawStringWithClip(rfbScreenInfoPtr rfbScreen,rfbFontDataPtr font,int x,int y,const char* string,int x1,int y1,int x2,int y2,Pixel colour,Pixel backColour);
+int rfbWidthOfString(rfbFontDataPtr font,const char* string);
+int rfbWidthOfChar(rfbFontDataPtr font,unsigned char c);
+void rfbFontBBox(rfbFontDataPtr font,unsigned char c,int* x1,int* y1,int* x2,int* y2);
+/* this returns the smallest box enclosing any character of font. */
+void rfbWholeFontBBox(rfbFontDataPtr font,int *x1, int *y1, int *x2, int *y2);
+
+/* dynamically load a linux console font (4096 bytes, 256 glyphs a 8x16 */
+rfbFontDataPtr rfbLoadConsoleFont(char *filename);
+/* free a dynamically loaded font */
+void rfbFreeFont(rfbFontDataPtr font);
+
+/* draw.c */
+
+/* You have to call rfbUndrawCursor before using these functions */
+void rfbFillRect(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,Pixel col);
+void rfbDrawPixel(rfbScreenInfoPtr s,int x,int y,Pixel col);
+void rfbDrawLine(rfbScreenInfoPtr s,int x1,int y1,int x2,int y2,Pixel col);
+
+/* selbox.c */
+
+/* this opens a modal select box. list is an array of strings, the end marked
+ with a NULL.
+ It returns the index in the list or -1 if cancelled or something else
+ wasn't kosher. */
+typedef void (*SelectionChangedHookPtr)(int index);
+extern int rfbSelectBox(rfbScreenInfoPtr rfbScreen,
+ rfbFontDataPtr font, char** list,
+ int x1, int y1, int x2, int y2,
+ Pixel foreColour, Pixel backColour,
+ int border,SelectionChangedHookPtr selChangedHook);
+
+/* cargs.c */
+
+extern void rfbUsage(void);
+extern void rfbPurgeArguments(int* argc,int* position,int count,char *argv[]);
+extern void rfbProcessArguments(rfbScreenInfoPtr rfbScreen,int* argc, char *argv[]);
+extern void rfbProcessSizeArguments(int* width,int* height,int* bpp,int* argc, char *argv[]);
+
+/* main.c */
+
+extern void rfbLogEnable(int enabled);
+extern void rfbLog(const char *format, ...);
+extern void rfbLogPerror(const char *str);
+
+void rfbScheduleCopyRect(rfbScreenInfoPtr rfbScreen,int x1,int y1,int x2,int y2,int dx,int dy);
+void rfbScheduleCopyRegion(rfbScreenInfoPtr rfbScreen,sraRegionPtr copyRegion,int dx,int dy);
+
+void rfbDoCopyRect(rfbScreenInfoPtr rfbScreen,int x1,int y1,int x2,int y2,int dx,int dy);
+void rfbDoCopyRegion(rfbScreenInfoPtr rfbScreen,sraRegionPtr copyRegion,int dx,int dy);
+
+void rfbMarkRectAsModified(rfbScreenInfoPtr rfbScreen,int x1,int y1,int x2,int y2);
+void rfbMarkRegionAsModified(rfbScreenInfoPtr rfbScreen,sraRegionPtr modRegion);
+void doNothingWithClient(rfbClientPtr cl);
+enum rfbNewClientAction defaultNewClientHook(rfbClientPtr cl);
+
+/* to check against plain passwords */
+Bool rfbCheckPasswordByList(rfbClientPtr cl,const char* response,int len);
+
+/* functions to make a vnc server */
+extern rfbScreenInfoPtr rfbGetScreen(int* argc,char** argv,
+ int width,int height,int bitsPerSample,int samplesPerPixel,
+ int bytesPerPixel);
+extern void rfbInitServer(rfbScreenInfoPtr rfbScreen);
+extern void rfbNewFramebuffer(rfbScreenInfoPtr rfbScreen,char *framebuffer,
+ int width,int height, int bitsPerSample,int samplesPerPixel,
+ int bytesPerPixel);
+
+extern void rfbScreenCleanup(rfbScreenInfoPtr screenInfo);
+
+/* functions to accept/refuse a client that has been put on hold
+ by a NewClientHookPtr function. Must not be called in other
+ situations. */
+extern void rfbStartOnHoldClient(rfbClientPtr cl);
+extern void rfbRefuseOnHoldClient(rfbClientPtr cl);
+
+/* call one of these two functions to service the vnc clients.
+ usec are the microseconds the select on the fds waits.
+ if you are using the event loop, set this to some value > 0, so the
+ server doesn't get a high load just by listening. */
+
+extern void rfbRunEventLoop(rfbScreenInfoPtr screenInfo, long usec, Bool runInBackground);
+extern void rfbProcessEvents(rfbScreenInfoPtr screenInfo,long usec);
+
+#endif
+
+#if(defined __cplusplus)
+}
+#endif