/* Changes for Mosaic-CK Copyright(C) 2009 Cameron Kaiser */

/****************************************************************************
 * NCSA Mosaic for the X Window System                                      *
 * Software Development Group                                               *
 * National Center for Supercomputing Applications                          *
 * University of Illinois at Urbana-Champaign                               *
 * 605 E. Springfield, Champaign IL 61820                                   *
 * mosaic@ncsa.uiuc.edu                                                     *
 *                                                                          *
 * Copyright (C) 1993, Board of Trustees of the University of Illinois      *
 *                                                                          *
 * NCSA Mosaic software, both binary and source (hereafter, Software) is    *
 * copyrighted by The Board of Trustees of the University of Illinois       *
 * (UI), and ownership remains with the UI.                                 *
 *                                                                          *
 * The UI grants you (hereafter, Licensee) a license to use the Software    *
 * for academic, research and internal business purposes only, without a    *
 * fee.  Licensee may distribute the binary and source code (if released)   *
 * to third parties provided that the copyright notice and this statement   *
 * appears on all copies and that no charge is associated with such         *
 * copies.                                                                  *
 *                                                                          *
 * Licensee may make derivative works.  However, if Licensee distributes    *
 * any derivative work based on or derived from the Software, then          *
 * Licensee will (1) notify NCSA regarding its distribution of the          *
 * derivative work, and (2) clearly notify users that such derivative       *
 * work is a modified version and not the original NCSA Mosaic              *
 * distributed by the UI.                                                   *
 *                                                                          *
 * Any Licensee wishing to make commercial use of the Software should       *
 * contact the UI, c/o NCSA, to negotiate an appropriate license for such   *
 * commercial use.  Commercial use includes (1) integration of all or       *
 * part of the source code into a product for sale or license by or on      *
 * behalf of Licensee to third parties, or (2) distribution of the binary   *
 * code or source code to third parties that need it to utilize a           *
 * commercial product sold or licensed by or on behalf of Licensee.         *
 *                                                                          *
 * UI MAKES NO REPRESENTATIONS ABOUT THE SUITABILITY OF THIS SOFTWARE FOR   *
 * ANY PURPOSE.  IT IS PROVIDED "AS IS" WITHOUT EXPRESS OR IMPLIED          *
 * WARRANTY.  THE UI SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY THE    *
 * USERS OF THIS SOFTWARE.                                                  *
 *                                                                          *
 * By using or copying this Software, Licensee agrees to abide by the       *
 * copyright law and all other applicable laws of the U.S. including, but   *
 * not limited to, export control laws, and the terms of this license.      *
 * UI shall have the right to terminate this license immediately by         *
 * written notice upon Licensee's breach of, or non-compliance with, any    *
 * of its terms.  Licensee may be held legally responsible for any          *
 * copyright infringement that is caused or encouraged by Licensee's        *
 * failure to abide by the terms of this license.                           *
 *                                                                          *
 * Comments and questions are welcome and can be sent to                    *
 * mosaic-x@ncsa.uiuc.edu.                                                  *
 ****************************************************************************/

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include "mosaic.h"
#include "gui.h"
#include "cci.h"
#include "cciBindings2.h"
#include <X11/Intrinsic.h>
#include "cciServer.h"
#include "list.h"
#include "memStuffForPipSqueeks.h"

#include "HTFormat.h"

static Boolean cciAccepting = 0; 
static int listenPortNumber=0;
static XtInputId connectInputID;
static List listOfConnections;
static List listOfSendOutput;
static List listOfSendAnchorTo; /* client in list if should receive	*/
static List listOfSendBrowserView;
static List listOfSendEvent;
static List listOfFileToURLs;
static List listOfForm;		/* list of form submitted by application */

/* ADC ugly hack below  ZZZZZ */
extern int CCIprotocol_handler_found;
extern int MCCIanchorcached;
 
extern XtAppContext app_context;
/***/ extern HTStream* CCIPresent();
extern char *machine_with_domain; /* host name */

/* from cciBindings.c */
extern int cci_event;

#ifndef DISABLE_TRACE
extern int cciTrace;
#endif

struct Connection {
	XtInputId inputId;
	MCCIPort client;
	};

struct SendWhatToWhom {
	MCCIPort client;
	char	*contentType;
	};
struct FileURL {
	char *fileName;
	char *url;
	};

struct FormSubmit{
	MCCIPort client;
	char *actionID;
	int valid;
}; 

cciStat *cciStatListFindEntry(MCCIPort findMe)
{
 /* this finds an entry in listOfSendAnchorTo based on MCCIPort client. */

  cciStat *current;
  char notDone = 1;
  current = (cciStat *) ListHead(listOfSendAnchorTo);
  while (notDone)
    {
      if ((current == NULL) || (current->client == findMe))
	notDone = 0;
      else
	current = (cciStat *) ListNext(listOfSendAnchorTo);
    }
  return current;
}
  

cciStat *cciStatListDeleteEntry(MCCIPort deleteMe)
{
  cciStat *current;
  
  if (current = cciStatListFindEntry(deleteMe))
    {
      ListDeleteEntry(listOfSendAnchorTo,current);
      return current;
    }
  else
    return NULL;
}

void cciStatPreventSendAnchor(MCCIPort client, char *url)
{
  /* this sets the flag that is checked for in cciSafeToSend, but
   * only if sendAnchor is on for this client. 
   */
  
  cciStat *current;

  if ((current = cciStatListFindEntry(client)) && (url != NULL))
    current->url = strdup(url);
}
  
int cciSafeToSend(cciStat *current, char *url)
{
/* ensures that Mosaic does not send an ANCHOR in response to a GET 
 * if SEND ANCHOR is turned on.
 *
 * INPUTS:
 * 		url	The url for which the flag is to be set.
 * RETURNS:
 * 		returns 0 if flag set for (client,url) pair (not safe to send)
 *                      1 if flag is not set for (client,url) pair
 *			(safe to send)
 */
  
  int rc = 1;

  if (current->url != NULL)
    {
      rc = strcmp(url,current->url);
      free(current->url);
      current->url = NULL;
    }
  return rc;
} 

void cciStatFree(cciStat *i)
{
  free(i);
}

cciStat *cciStatNew(MCCIPort client, int status)
{
  cciStat *new;

  new = (cciStat *) malloc( sizeof(cciStat) );
  if (new)
    {
      new->client = client;
      new->status = status;
      new->url = NULL;
    }
  return new;
}
  
void MoCCISendAnchor(client,sendIt)
/* set the state of sending anchors */
MCCIPort client;
int sendIt; /* 0, don't send, 1 send before browser gets document, */
	    /* 2 send after browser gets document */
            /* 3 send it before and then let the CCI app handle it  ADC ZZZ */
{
  cciStat *statElt;

  statElt = cciStatListDeleteEntry(client);
  switch (sendIt)
    {
    case 0:
      if (statElt)
	cciStatFree(statElt);
      break;
    case 1: /* send before browser gets document */
      if (statElt)
	statElt->status = 1;
      else
	statElt = cciStatNew(client,1);
      if (statElt)
	ListAddEntry(listOfSendAnchorTo,statElt);
      break;
    case 2: /* send after browser gets document */
      if (statElt)
	statElt->status = 2;
      else
	statElt = cciStatNew(client,2);
      if (statElt)
	ListAddEntry(listOfSendAnchorTo,statElt);
      break;
    case 3: /* send before browser gets document, then let it handle it  ADC ZZZ */
      if (statElt)
        statElt->status = 3;
      else
        statElt = cciStatNew(client,3);
      if (statElt)
        ListAddEntry(listOfSendAnchorTo,statElt);
      break;

    default:
      ;
    }
}

void MoCCISendAnchorToCCI(url, beforeAfter)
char *url;
int beforeAfter;
/***************************************************************
 * beforeAfter - 	0: send to all clients in list
 * 			1: send to all clients with status == 1;
 *			2: send to all clients with status == 2:
 *                      3: send to all clients with status == 3:  ADC ZZZ
 ***************************************************************/
{
  cciStat *client;
  
  client = (cciStat *) ListHead(listOfSendAnchorTo);
  while(client) 
    {
      if (cciSafeToSend(client, url)) /* test flag */
	switch (beforeAfter)
	  {
	  case 0:
            if (client->status == 3) {                  /* ADC ZZZ */
              MCCIanchorcached = 1;
              MCCISendAnchorHistory(client->client,url);
              MCCIanchorcached = 0;
            }
            else
	      MCCISendAnchorHistory(client->client,url);
	    break;
	  case 1:
	    if (client->status == 1)
	      MCCISendAnchorHistory(client->client,url);
	    break;
	  case 2:
	    if (client->status == 2)
	      MCCISendAnchorHistory(client->client,url);
          case 3:                                       /* ADC ZZZ */
            if (client->status == 3)
              MCCISendAnchorHistory(client->client,url);
            CCIprotocol_handler_found = 1;
	    break;
	  default:
	    ;
	  }
      client = (cciStat *) ListNext(listOfSendAnchorTo);
    }
}

void MoCCISendEvent(client,on)
MCCIPort client;
int on;
{
MCCIPort tmp;

	if (on) {
		ListAddEntry(listOfSendEvent,client);
		}
	else {
		ListDeleteEntry(listOfSendEvent,client);

		/* turn off cci_event only if list of clients is NULL */
		if (!(tmp = (MCCIPort) ListHead(listOfSendEvent)))
			cci_event = 0;
		}
}

void MoCCISendMouseAnchor(client,on)
MCCIPort client;
int on;
{
MCCIPort tmp;

	if (on) {
		ListAddEntry(listOfSendEvent,client);
	}
	else {
		ListDeleteEntry(listOfSendEvent,client);

		/* turn off cci_event only if list of clients is NULL */
		if (!(tmp = (MCCIPort) ListHead(listOfSendEvent)))
			cci_event = 0;
	}
}

void MoCCISendBrowserView(client,on)
MCCIPort client;
int on;
{
	if (on) {
		ListAddEntry(listOfSendBrowserView,client);
		}
	else {
		ListDeleteEntry(listOfSendBrowserView,client);
		}
}

void MoCCIForm(client, actionID, status,close_connection)
MCCIPort client;
char *actionID;
int status;
int close_connection;
{
struct FormSubmit *sendForm;
int registered = 0;

	if (status){
		sendForm = (struct FormSubmit *) ListHead(listOfForm);
		while (sendForm){
			if ((sendForm->client == client) &&
			   (!strcmp(sendForm->actionID,actionID))) {
				sendForm->valid = 1;
				registered = 1;
			   	}
			sendForm = (struct FormSubmit *)ListNext(listOfForm);
			}

		/* only register if not done so alreday */
		if (!registered){
			if (!(sendForm = (struct FormSubmit *)
				MALLOC(sizeof(struct FormSubmit)))) {
				return; /* mem problem */
				}

			sendForm->client = client;
			sendForm->actionID = strdup(actionID);
			sendForm->valid = 1;
			ListAddEntry(listOfForm, sendForm);
			}
	}
	else if (close_connection)
	{
		sendForm = (struct FormSubmit *) ListHead(listOfForm);
		while(sendForm){
			if (sendForm->client == client) {
				ListDeleteEntry(listOfForm, sendForm);
				FREE(sendForm->actionID);
				FREE(sendForm);
				sendForm = (struct FormSubmit *)
					ListCurrent(listOfForm);
#if 0
				sendForm->valid = 0; 
#endif
				}
			else{
				sendForm = (struct FormSubmit *)
					ListNext(listOfForm);
				}
			}
	}
	else{ /* remove entry from list, forget the valid bit, delete it!! */
		sendForm = (struct FormSubmit *) ListHead(listOfForm);
		while(sendForm){
			if ((sendForm->client == client) &&
			   (!strcmp(sendForm->actionID,actionID))){
				ListDeleteEntry(listOfForm, sendForm);
				FREE(sendForm->actionID);
				FREE(sendForm);
				sendForm = (struct FormSubmit *)
					ListCurrent(listOfForm);
#if 0
				sendForm->valid = 0;
#endif
				}
			else{
				sendForm = (struct FormSubmit *)
					ListNext(listOfForm);
				}
			}
	}

#ifndef DISABLE_TRACE
	if (cciTrace) {
		sendForm = (struct FormSubmit *) ListHead(listOfForm);
		fprintf(stderr,"***** begin mosaic list *****\n");
		while(sendForm){
			fprintf(stderr,"actionID 	%s\n",sendForm->actionID);
			fprintf(stderr,"clientaddress %s\n",sendForm->client->serverAddress);
			sendForm = (struct FormSubmit *) ListNext(listOfForm);
		}
	}
#endif
}

int MoCCIPreInitialize()
{
static int donePreInit = 0;

	if (donePreInit) {
		return 0;
		}
	donePreInit = 1;

	listOfConnections = ListCreate();
	listOfSendOutput = ListCreate();
	listOfSendAnchorTo = ListCreate();
	listOfSendBrowserView = ListCreate();
	listOfSendEvent = ListCreate();
	listOfFileToURLs = ListCreate();
	listOfForm = ListCreate();

}


int MoCCIInitialize(portNumber)
int portNumber;
{
int retVal;

	MoCCIPreInitialize();

	retVal = MCCIServerInitialize(portNumber);
	if (retVal) {
		  /* Write port number to .mosaiccciport */
    		char *home = getenv ("HOME"), *fnam;
    		FILE *fp;
		
    		if (!home)
      			home = "/tmp";
		
    		fnam = (char *)malloc (strlen (home) + 32);
    		sprintf (fnam, "%s/.mosaiccciport", home);
		
    		fp = fopen (fnam, "w");
    		if (fp) {
			fprintf(fp,"%s:%d\n",machine_with_domain,portNumber);
        		fclose (fp);
      			}
		
    		free (fnam);
  		}
	return(retVal);

}
int MoCCITerminateAllConnections()
{
struct Connection *con;
struct SendWhatToWhom *sendOutput;

	con = (struct Connection *) ListHead(listOfConnections);
	while(con) {
		XtRemoveInput(con->inputId);
		NetCloseConnection(con->client);
		MoCCISendAnchor(con->client,0);
		MoCCISendBrowserView(con->client,0);
		MoCCISendEvent(con->client, 0);
		MoCCIForm(con->client, NULL, 0, 1);

		sendOutput=(struct SendWhatToWhom *)ListHead(listOfSendOutput);
		while(sendOutput){          /* remove sendOutputs */
			HTRemoveConversion(sendOutput->contentType,
				     "www/present",CCIPresent);
			ListDeleteEntry(listOfSendOutput,sendOutput);
			FREE(sendOutput->contentType);
			FREE(sendOutput);
		  
			sendOutput = (struct SendWhatToWhom *)
				ListCurrent(listOfSendOutput);
			}

		ListDeleteEntry(listOfConnections,con);
		con = (struct Connection *) ListHead(listOfConnections);
		}
}

int MoCCITerminateAConnection(client)
MCCIPort client;
{
struct Connection *con;
struct SendWhatToWhom *sendOutput;

	con = (struct Connection *) ListHead(listOfConnections);
	while(con) {
		if (con->client == client) {
			XtRemoveInput(con->inputId);
			MoCCISendAnchor(con->client,0);
			MoCCISendBrowserView(con->client,0);
			MoCCISendEvent(con->client, 0);
			MoCCIForm(con->client, NULL, 0, 1);

			sendOutput=(struct SendWhatToWhom *)
			  ListHead(listOfSendOutput);
			while(sendOutput){          /* remove sendOutputs */
			  if(sendOutput->client == client){
			    HTRemoveConversion(sendOutput->contentType,
					       "www/present",CCIPresent);
			    ListDeleteEntry(listOfSendOutput,sendOutput);
			    FREE(sendOutput->contentType);
			    FREE(sendOutput);
			  }
			  sendOutput = (struct SendWhatToWhom *)
			    ListNext(listOfSendOutput);
			}
			    
			ListDeleteEntry(listOfConnections,con);
			con = (struct Connection *)
					ListCurrent(listOfConnections);
			}
		else {
			con = (struct Connection *) ListNext(listOfConnections);
			}
		}
}

void MoCCIHandleInput(client,source)
MCCIPort client;
int source;
{
	if (MCCIIsThereInput(client)) {
		MCCIHandleInput(client);
		}
}

void MoCCINewConnection(app_context,source,inputID)
XtAppContext app_context;  
int *source;
XtInputId *inputID; 
{
MCCIPort client;
struct Connection *con;

#ifndef DISABLE_TRACE
	if (cciTrace) {
		fprintf(stderr,"MoCCINewConnection(): I've been called\n");
	}
#endif

	client = MCCICheckAndAcceptConnection();
	if (!client) {
		/* nothing here */
		return;
		}

#ifndef DISABLE_TRACE
	if (cciTrace) {
		fprintf(stderr,"Mosaic: got a CCI connection\n");
	}
#endif

/*	
	this determines wether there is one or many cci clients connecting 
	XtRemoveInput(*inputID);
*/

	MCCISendResponseLine(client,MCCIR_OK,"VERSION 01 X Mosaic "MO_VERSION_STRING);

	con = (struct Connection *) malloc(sizeof(struct Connection));
	con->client = client;
	con->inputId = XtAppAddInput(app_context,
		MCCIGetSocketDescriptor(client),
		(XtPointer)  XtInputReadMask,
		(XtInputCallbackProc) MoCCIHandleInput, (XtPointer) client);

	ListAddEntry(listOfConnections,con);

}

static XmxCallback (MoCCIWindowCallBack)
{
Boolean newState;
mo_window *win = mo_fetch_window_by_id (XmxExtractUniqid ((int)client_data));
int newPort;
char *portString;
char buff[256];

   newState = cciAccepting;
   switch (XmxExtractToken ((int)client_data)) {
	case 0: /*ok*/
  		newState = XmToggleButtonGetState(win->cci_accept_toggle);
		XtUnmanageChild(win->cci_win);
		break;
	case 1: /*Cancel*/
		if (cciAccepting != XmToggleButtonGetState
						(win->cci_accept_toggle)) {
			/* reset toggle state */
			XmxSetToggleButton(win->cci_accept_toggle, 
							cciAccepting);
			XmxSetToggleButton(win->cci_off_toggle, 
							!cciAccepting);
			}
		XtUnmanageChild(win->cci_win);
		break;
	case 2: /*Help*/
		mo_open_another_window (win,
		        mo_assemble_help_url("docview-menubar-file.html#open"),
			NULL, NULL);

		break;
	}
   if (newState != cciAccepting) {
	/* toggle state has changed */
	cciAccepting = newState;
	if (cciAccepting) {
		newPort = 0;
	        portString= XmxTextGetString (win->cci_win_text);
		if (portString) {
			newPort = atoi(portString);
			}
		if ((newPort < 1024) || (newPort > 65535)) {
                        XmxMakeErrorDialog (win->cci_win,
                                "CCI port address must be between 1024 and 65535" ,
                                "CCI port address error" );
			XtManageChild (Xmx_w);
			cciAccepting = False;
			listenPortNumber = 0;
			XmxSetToggleButton(win->cci_accept_toggle, 
							cciAccepting);
			XmxSetToggleButton(win->cci_off_toggle, 
							!cciAccepting);
			return;
		}

		if (MoCCIInitialize(newPort)) {
			listenPortNumber = newPort;
			connectInputID = XtAppAddInput(app_context,
                        	MCCIReturnListenPortSocketDescriptor(),
	                        (XtPointer) XtInputReadMask,
				(XtInputCallbackProc) MoCCINewConnection,
				app_context);
			sprintf(buff,"%s %d","CCI Now listening on port" ,newPort);
			XmxMakeInfoDialog(win->cci_win,buff,"CCI port status" );
			XtManageChild(Xmx_w);
		}
		else {
			cciAccepting = False;
			listenPortNumber = 0;
			XmxSetToggleButton(win->cci_accept_toggle, 
							cciAccepting);
			XmxSetToggleButton(win->cci_off_toggle, 
							!cciAccepting);
			/* Can't accept on this port...*/
                        XmxMakeErrorDialog (win->cci_win,
                                "CCI Can't accept requests on this port. May be in use already." ,
                                "CCI port address error" );
			XtManageChild(Xmx_w);
		}
	}
	else {
		XtRemoveInput(connectInputID); /* stop accepting connections*/
		MCCICloseAcceptPort(); /* kill accept port */

		/* terminate existing connections */
		MoCCITerminateAllConnections();
		listenPortNumber = 0;
		sprintf(buff,"CCI Is no longer listening");
		XmxMakeInfoDialog(win->cci_win, buff,"CCI port status");
		XtManageChild(Xmx_w);
		}
	}
}

mo_status MoDisplayCCIWindow(win)
mo_window *win;
{
Widget dialogFrame;
Widget dialogSeparator;
/*Widget buttonsForm;*/
Widget cciForm,label;
Widget toggleBox;
Widget buttonBox;

	if (!win->cci_win) {
		XmxSetUniqid (win->id);
		win->cci_win = XmxMakeFormDialog(win->base, 
						 "NCSA Mosaic: Common Client Interface" );
		dialogFrame = XmxMakeFrame(win->cci_win, XmxShadowOut);
		XmxSetConstraints
		        (dialogFrame, XmATTACH_FORM, XmATTACH_FORM,
		         XmATTACH_FORM, XmATTACH_FORM, NULL, NULL, NULL, NULL);
		/* Main form. */
		cciForm = XmxMakeForm(dialogFrame);

		label = XmxMakeLabel(cciForm, "CCI Port Address: " );
		XmxSetArg(XmNcolumns, 25);
			win->cci_win_text= XmxMakeText (cciForm);
			XmxAddCallbackToText (win->cci_win_text, 
			MoCCIWindowCallBack, 0);

		toggleBox = XmxMakeRadioBox(cciForm);

		win->cci_accept_toggle = XmxMakeToggleButton
			(toggleBox, "Accept requests" , NULL, 0);


		win->cci_off_toggle = XmxMakeToggleButton
			(toggleBox, "Interface off" , NULL, 0);

		dialogSeparator= XmxMakeHorizontalSeparator(cciForm);
		buttonBox = XmxMakeFormAndThreeButtons(cciForm,
						       MoCCIWindowCallBack,
						       "Ok" ,
						       "Dismiss" ,
						       "Help..." ,
						       0,1,2);

		XmxSetOffsets (label, 13, 0, 10, 0);
		XmxSetConstraints
			(label, XmATTACH_FORM, XmATTACH_NONE, 
			XmATTACH_FORM, XmATTACH_NONE, NULL, NULL, NULL, NULL);

		XmxSetOffsets (win->cci_win_text, 10, 0, 5, 8);
		XmxSetConstraints
		        (win->cci_win_text, XmATTACH_FORM, XmATTACH_NONE, 
			XmATTACH_WIDGET,
			XmATTACH_FORM, NULL, NULL, label, NULL);

		XmxSetConstraints (toggleBox, XmATTACH_WIDGET, 
			XmATTACH_NONE, XmATTACH_WIDGET, XmATTACH_NONE,
			win->cci_win_text, NULL, label, NULL);
		XmxSetOffsets (toggleBox, 8, 0, 2, 0);

		XmxSetConstraints (dialogSeparator, XmATTACH_WIDGET, 
			XmATTACH_NONE, XmATTACH_FORM, XmATTACH_FORM,
			toggleBox, NULL, NULL, NULL);

		XmxSetConstraints (buttonBox, XmATTACH_WIDGET, 
			XmATTACH_FORM, XmATTACH_FORM, XmATTACH_FORM,
			dialogSeparator, NULL, NULL, NULL);
	}

	if (cciAccepting) {
		char buff[10];
		sprintf(buff,"%d",listenPortNumber);
		XmxTextSetString(win->cci_win_text,buff);
		}
	else {
		XmxTextSetString(win->cci_win_text,"");
		}
	XmxSetToggleButton(win->cci_accept_toggle, cciAccepting);
	XmxSetToggleButton(win->cci_off_toggle, !cciAccepting);

	XmxManageRemanage (win->cci_win);
	return mo_succeed;

}

void MoCCISendOutputToClient(contentType,fileName)
char *contentType; /* string name of data type */
char *fileName; /* data stored here */
{
struct SendWhatToWhom *sendOutput;


	/* send data to all clients that registered for this content type*/
	sendOutput=(struct SendWhatToWhom *)ListHead(listOfSendOutput);
	while(sendOutput){
		if (!strcmp(sendOutput->contentType,contentType)) {
#ifndef DISABLE_TRACE
			if (cciTrace) {
				fprintf(stderr,"Sending output through cci of type %s\n",
						sendOutput->contentType);
			}
#endif

			/* prep data for sending here */

			/* send it back to client */
			MCCISendOutputFile(sendOutput->client,
					contentType,fileName);
			}
		sendOutput=(struct SendWhatToWhom *)ListNext(listOfSendOutput);
		}
	
	return;

}

/* inorder to send content to application, mosaic must call this function
   twice, the first to set the variable send, the second to do the actual
   sending
*/
int MoCCIFormToClient(actionID, query, contentType, post_data, status)
char *actionID;
char *query;
char *contentType;
char *post_data;
int status;
{
static int send = 0;
struct FormSubmit *sendForm;
int found = 0;

	/* just make a note that its a cciPOST */
	if (status && (send == 0)) {
		send = 1;
		return(0);
		}

	if (send){
	  send = 0;
	  sendForm=(struct FormSubmit *) ListHead(listOfForm);
	  while(sendForm) 
	  {
		if ( !strcmp(actionID, sendForm->actionID))
		/* found correct client */
		{
			if (sendForm->valid)
				MCCIFormQueryToClient(sendForm->client, 
				  actionID, query, contentType, post_data);
			found = 1;
		}
		sendForm = (struct FormSubmit *)ListNext(listOfForm);
	  }
	}
	return found;
}
/* this function is a callback from the libwww2 Converter */

void MoCCISendOutput(MCCIPort client,Boolean sendIt,char *contentType)
{
struct SendWhatToWhom *sendOutput;

	if (sendIt) {
		if (!(sendOutput = (struct SendWhatToWhom *) 
		    MALLOC(sizeof(struct SendWhatToWhom)))) {
			return /*mem error*/;
			}
		sendOutput->client = client;
		sendOutput->contentType = strdup(contentType);
		ListAddEntry(listOfSendOutput,sendOutput);

		/* set up call back for this content Type */
		HTSetConversion(contentType,"www/present",CCIPresent,
				1.0, 0.0, 0.0);
/*If we use this, out put a message like....sent to cci
*/

/**		HTSetPresentation(contentType,MoCCISendOutputCB,
					1.0, 0.0, 0.0);
*/
		}
	else {
		sendOutput=(struct SendWhatToWhom *)ListHead(listOfSendOutput);
		while(sendOutput){
			if ((sendOutput->client == client) &&
			    (!strcmp(sendOutput->contentType,contentType))) {
				HTRemoveConversion(contentType,
						"www/present",CCIPresent);
				ListDeleteEntry(listOfSendOutput,sendOutput);
				FREE(sendOutput->contentType);
				FREE(sendOutput);

				sendOutput = (struct SendWhatToWhom *)
						ListCurrent(listOfSendOutput);
				}
			else {
				sendOutput = (struct SendWhatToWhom *)
						ListNext(listOfSendOutput);
				}
			}
		
		}
}

void MoCCIStartListening(w,port)
Widget w;
int port;
{
/*int listenPort;*/

        if (MoCCIInitialize(port)) {
		connectInputID = XtAppAddInput(app_context,
                        MCCIReturnListenPortSocketDescriptor(),
                        (XtPointer) XtInputReadMask,
                        (XtInputCallbackProc) MoCCINewConnection,
			app_context);
		cciAccepting = True; 
		listenPortNumber = port;
/*
		XmxMakeInfoDialog(w,"Mosaic CCI port is listening",
				"CCI port status");
		XtManageChild(Xmx_w);
*/
                }
	else {
		char buf[80];
		sprintf(buf,"%s %d","Could not listen on port" ,port);
		XmxMakeErrorDialog(w,buf,
				"CCI Error" );
		XtManageChild(Xmx_w);
	}
}

void MoCCISendEventOutput(event_type)
/* Handle SendEventOutput if needed */
/* send Event data to all the clients that have requested it */
CCI_events event_type;
{
MCCIPort client;

	client = (MCCIPort) ListHead(listOfSendEvent);
	while (client) {
		MCCISendEventOutput(client,event_type);
		client = (MCCIPort) ListNext(listOfSendEvent);
		}
}



void MoCCISendMouseAnchorOutput(anchor)
/* Handle SendMouseAnchorOutput if needed */
/* send MouseAnchor data to all the clients that have requested it */
char *anchor;
{
MCCIPort client;

	client = (MCCIPort) ListHead(listOfSendEvent);
	while (client) {
		MCCISendMouseAnchorOutput(client,anchor);
		client = (MCCIPort) ListNext(listOfSendEvent);
	}
}



void MoCCISendBrowserViewOutput(url, contentType, data, dataLength)
/* Handle SendBrowserViewOutput if needed */
/* send BrowserView data to all the clients that have requested it */
char *url;
char *contentType;
char *data;
int  dataLength;
{
MCCIPort client;

	if (dataLength == 0) {
		return;
		}
	if (!data) {
		return;
		}
	if ((!url) ||  (!strlen(url))) {
		return;
		}
	if ((!contentType) ||  (!strlen(contentType))) {
		contentType = "unknown";
		}

	client = (MCCIPort) ListHead(listOfSendBrowserView);
	while (client) {
		MCCISendBrowserViewOutput(client,url,contentType,
					data,dataLength);
		client = (MCCIPort) ListNext(listOfSendBrowserView);
		}
}

int MoCCISendBrowserViewFile(url, contentType, filename)
char *url;
char *contentType;
char *filename;
{
struct stat fileInfo;
FILE *fp;
char *data;

	if (!ListHead(listOfSendBrowserView)) {
		return(MCCI_OK);
		}
	if ((!filename) || (!strlen(filename))) {
		return(MCCI_OK);
		}
	if ((!url) || (!strlen(url))) {
		return(MCCI_OK);
		}
	if ((!contentType) || (!strlen(contentType))) {
		contentType = "unknown";
		}



        if (stat(filename,&fileInfo)) { /* get the length of the file */
                return(MCCI_FAIL);
                }
	

	if (!(fp = fopen(filename,"r"))) {
                return(MCCI_FAIL);
		}
	if (!(data = (char *) malloc(fileInfo.st_size))) {
		fclose(fp);
                return(MCCI_OUTOFMEMORY);
		}
	if (fileInfo.st_size != fread(data,sizeof(char),fileInfo.st_size,fp)){
		fclose(fp);
		free(data);
                return(MCCI_FAIL);
		}
	MoCCISendBrowserViewOutput(url, contentType, data, fileInfo.st_size);

	free(data);
	fclose(fp);
	return(MCCI_OK);
}


int MoCCIMaxNumberOfConnectionsAllowed()
/* return number of connections allowed.  This is set in the X resources.
 * if it's zero, then treat it as unlimited.
 */
{
    return(get_pref_int(eMAX_NUM_OF_CCI_CONNECTIONS));
}

int MoCCICurrentNumberOfConnections()
{
    return(ListCount(listOfConnections));
}

void MoCCIAddFileURLToList(fileName,url)
/* this routine should be called each time a url has been down loaded
   and stored as file.  This routine adds the fileName,url pair to the
   list for later query over cci by an external viewer (cci app).
*/
char *fileName;
char *url;
{
struct FileURL *fileURL;
	
#ifndef DISABLE_TRACE
	if (cciTrace) {
		fprintf(stderr,"MoCCIAddFileURLToList():fileName=\"%s\", url=\"%s\"\n",(fileName?fileName:"NULL"),(url?url:"NULL"));
	}
#endif

	if ((!fileName) || (!url)) {
		return;
		}

	if (!(fileURL = (struct FileURL *) MALLOC(sizeof (struct FileURL)))) {
		/* out of memory, just return */
		return;
		}
	fileURL->fileName = strdup(fileName);
	fileURL->url = strdup(url);
	ListAddEntry(listOfFileToURLs,fileURL);
	return;
}

char *MoReturnURLFromFileName(fileName)
/* given filename, return associated URL in the list */
/* if not found, return NULL */
char *fileName;
{
struct FileURL *fileURL;

	fileURL = (struct FileURL *) ListHead(listOfFileToURLs);
	while (fileURL){ 
		if (!strncmp(fileURL->fileName,fileName,
			     strlen(fileURL->fileName))) {
			return(fileURL->url);
			}
		fileURL = (struct FileURL *) ListNext(listOfFileToURLs);
		}
	return(NULL);
}
/* this rplaces a vanilla url name with the name it was actually called with,
   which is what is needed by external apps.  It is indeed a huge hack, and 
   should be fixed
*/
void MoCCIAddAnchorToURL(url, urlAndAnchor)
char *url;
char *urlAndAnchor;
{
  struct FileURL *fileURL;
  fileURL = (struct FileURL *) ListTail(listOfFileToURLs);
  if (fileURL && !strcmp(fileURL->url, url)) {
    free(fileURL->url);
    fileURL->url = strdup(urlAndAnchor);
  }
}

	
