/* $XFree86: xc/programs/Xserver/xkb/ddxLoad.c,v 3.37 2005/10/14 15:17:28 tsi Exp $ */
/************************************************************
Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.

Permission to use, copy, modify, and distribute this
software and its documentation for any purpose and without
fee is hereby granted, provided that the above copyright
notice appear in all copies and that both that copyright
notice and this permission notice appear in supporting
documentation, and that the name of Silicon Graphics not be 
used in advertising or publicity pertaining to distribution 
of the software without specific prior written permission.
Silicon Graphics makes no representation about the suitability 
of this software for any purpose. It is provided "as is"
without any express or implied warranty.

SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 
DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 
DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
THE USE OR PERFORMANCE OF THIS SOFTWARE.

********************************************************/

#include <stdio.h>
#include <ctype.h>
#define	NEED_EVENTS 1
#include <X11/X.h>
#include <X11/Xos.h>
#include <X11/Xproto.h>
#include <X11/keysym.h>
#include <X11/extensions/XKM.h>
#include "inputstr.h"
#include "scrnintstr.h"
#include "windowstr.h"
#define	XKBSRV_NEED_FILE_FUNCS
#include <X11/extensions/XKBsrv.h>
#include <X11/extensions/XI.h>
#include "xkb.h"

#if defined(CSRG_BASED) || defined(linux) || defined(__sgi) || defined(AIXV3) || defined(__osf__) || defined(__GNU__)
#include <paths.h>
#endif

#ifndef PATH_MAX
#ifdef MAXPATHLEN
#define	PATH_MAX MAXPATHLEN
#else
#define	PATH_MAX 1024
#endif
#endif

	/*
	 * If XKM_OUTPUT_DIR specifies a path without a leading slash, it is
	 * relative to the top-level XKB configuration directory.
	 * Making the server write to a subdirectory of that directory
	 * requires some work in the general case (install procedure
	 * has to create links to /var or somesuch on many machines),
	 * so we just compile into /usr/tmp for now.
	 */
#ifndef XKM_OUTPUT_DIR
#define	XKM_OUTPUT_DIR	"compiled/"
#endif

#define	PRE_ERROR_MSG "\"The XKEYBOARD keymap compiler (xkbcomp) reports:\""
#define	ERROR_PREFIX	"\"> \""
#define	POST_ERROR_MSG1 "\"Errors from xkbcomp are not fatal to the X server\""
#define	POST_ERROR_MSG2 "\"End of messages from xkbcomp\""

static void
OutputDirectory(
    char* outdir)
{
#ifndef WIN32
    if (getuid() == 0) {
	/* if server running as root it *may* be able to write */
	/* FIXME: check whether directory is writable at all */
	(void) strcpy (outdir, XKM_OUTPUT_DIR);
    } else
#endif
    {
#ifdef _PATH_VARTMP
	(void) strcpy (outdir, _PATH_VARTMP);
	if (outdir[strlen(outdir) - 1] != '/')	/* Hi IBM, Digital */
	    (void) strcat (outdir, "/");
#else
	(void) strcpy (outdir, "/tmp/");
#endif
    }
}

Bool
XkbDDXCompileNamedKeymap(	XkbDescPtr		xkb,
				XkbComponentNamesPtr	names,
				char *			nameRtrn,
				int			nameRtrnLen)
{
char 	cmd[PATH_MAX],file[PATH_MAX],xkm_output_dir[PATH_MAX],*map,*outFile;

    if (names->keymap==NULL)
	return False;
    strncpy(file,names->keymap,PATH_MAX); file[PATH_MAX-1]= '\0';
    if ((map= strrchr(file,'('))!=NULL) {
	char *tmp;
	if ((tmp= strrchr(map,')'))!=NULL) {
	    *map++= '\0';
	    *tmp= '\0';
	}
	else {
	    map= NULL;
	}
    }
    if ((outFile= strrchr(file,'/'))!=NULL)
	 outFile= _XkbDupString(&outFile[1]);
    else outFile= _XkbDupString(file);
    XkbEnsureSafeMapName(outFile);
    OutputDirectory(xkm_output_dir);

    if (XkbBaseDirectory!=NULL) {
#ifdef __UNIXOS2__
        char *tmpbase = (char*)__XOS2RedirRoot(XkbBaseDirectory);
        int i;
	if (strlen(tmpbase)*2+(xkbDebugFlags>9?2:1)
#else
	if (strlen(XkbBaseDirectory)*2+(xkbDebugFlags>9?2:1)
#endif
		+(map?strlen(map)+3:0)+strlen(PRE_ERROR_MSG)
		+strlen(ERROR_PREFIX)+strlen(POST_ERROR_MSG1)
		+strlen(file)+strlen(xkm_output_dir)
		+strlen(outFile)+53 > PATH_MAX)
	{
	    ErrorF("compiler command for keymap (%s) exceeds max length\n",
								names->keymap);
	    return False;
	}
#ifndef __UNIXOS2__
	sprintf(cmd,"%s/xkbcomp -w %d -R%s -xkm %s%s -em1 %s -emp %s -eml %s keymap/%s %s%s.xkm",
		XkbBaseDirectory,
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		XkbBaseDirectory,(map?"-m ":""),(map?map:""),
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,file,
		xkm_output_dir,outFile);
#else
	for (i=0; i<strlen(tmpbase); i++) if (tmpbase[i]=='/') tmpbase[i]='\\';
	sprintf(cmd,"%s\\xkbcomp -w %d -R%s -xkm %s%s -em1 %s -emp %s -eml %s keymap/%s %s%s.xkm",
		tmpbase,
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		tmpbase,(map?"-m ":""),(map?map:""),
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,file,
		xkm_output_dir,outFile);
	ErrorF("Command line for XKB is %s\n",cmd);
#endif
    }
    else {
	if ((xkbDebugFlags>9?2:1)+(map?strlen(map)+3:0)+strlen(PRE_ERROR_MSG)
		+strlen(ERROR_PREFIX)+strlen(POST_ERROR_MSG1)
		+strlen(file)+strlen(xkm_output_dir)
		+strlen(outFile)+49 > PATH_MAX)
	{
            ErrorF("compiler command for keymap (%s) exceeds max length\n",
							names->keymap);
	    return False;
	}
	sprintf(cmd,"xkbcomp -w %d -xkm %s%s -em1 %s -emp %s -eml %s keymap/%s %s%s.xkm",
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		(map?"-m ":""),(map?map:""),
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,file,
		xkm_output_dir,outFile);
    }
#ifdef DEBUG
    if (xkbDebugFlags) {
	ErrorF("XkbDDXCompileNamedKeymap compiling keymap using:\n");
	ErrorF("    \"cmd\"\n");
    }
#endif
    if (System(cmd)==0) {
	if (nameRtrn) {
	    strncpy(nameRtrn,outFile,nameRtrnLen);
	    nameRtrn[nameRtrnLen-1]= '\0';
	}
	if (outFile!=NULL)
	    _XkbFree(outFile);
	return True;
    } 
#ifdef DEBUG
    ErrorF("Error compiling keymap (%s)\n",names->keymap);
#endif
    if (outFile!=NULL)
	_XkbFree(outFile);
    return False;
}
        	
Bool    	
XkbDDXCompileKeymapByNames(	XkbDescPtr		xkb,
				XkbComponentNamesPtr	names,
				unsigned		want,
				unsigned		need,
				char *			nameRtrn,
				int			nameRtrnLen)
{
FILE *	out;
char	buf[PATH_MAX],keymap[PATH_MAX],xkm_output_dir[PATH_MAX];
#ifdef WIN32
char tmpname[32];
#endif    
#ifdef __UNIXOS2__
char *tmpbase;
int i;
#endif
    if ((names->keymap==NULL)||(names->keymap[0]=='\0')) {
	sprintf(keymap,"server-%s",display);
    }
    else {
	if (strlen(names->keymap) > PATH_MAX - 1) {
	    ErrorF("name of keymap (%s) exceeds max length\n", names->keymap);
	    return False;
	}
	strcpy(keymap,names->keymap);
    }

    XkbEnsureSafeMapName(keymap);
    OutputDirectory(xkm_output_dir);
#ifdef WIN32
    strcpy(tmpname, "\\temp\\xkb_XXXXXX");
    (void) mktemp(tmpname);
#endif
#ifdef __UNIXOS2__
    tmpbase = (char*)__XOS2RedirRoot(XkbBaseDirectory);
#endif
    if (XkbBaseDirectory!=NULL) {
	if (strlen(XkbBaseDirectory)*2+(xkbDebugFlags>9?2:1)
		+strlen(PRE_ERROR_MSG)+strlen(ERROR_PREFIX)
		+strlen(POST_ERROR_MSG1)+strlen(xkm_output_dir)
		+strlen(keymap)+48 > PATH_MAX)
	{
            ErrorF("compiler command for keymap (%s) exceeds max length\n",
							names->keymap);
	    return False;
	}
#ifndef WIN32
#ifndef __UNIXOS2__
	sprintf(buf,
	   "%s/xkbcomp -w %d -R%s -xkm - -em1 %s -emp %s -eml %s \"%s%s.xkm\"",
		XkbBaseDirectory,
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		XkbBaseDirectory,
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,
		xkm_output_dir,keymap);
#else
	for (i=0; i<strlen(tmpbase); i++) if (tmpbase[i]=='/') tmpbase[i]='\\';
	sprintf(buf,
	  "%s\\xkbcomp -w %d -R%s -xkm - -em1 %s -emp %s -eml %s \"%s%s.xkm\"",
		tmpbase,
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		tmpbase,
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,
		xkm_output_dir,keymap);
#endif
#else
	sprintf(buf,
      "%s/xkbcomp -w %d -R%s -xkm - -em1 %s -emp %s -eml %s \"%s%s.xkm\" < %s",
		XkbBaseDirectory,
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		XkbBaseDirectory,
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,
		xkm_output_dir,keymap,tmpname);
#endif
    }
    else {
	if ((xkbDebugFlags>9?2:1)+strlen(PRE_ERROR_MSG)
		+strlen(ERROR_PREFIX)+strlen(POST_ERROR_MSG1)
		+strlen(xkm_output_dir)+strlen(keymap)+44 > PATH_MAX)
	{
            ErrorF("compiler command for keymap (%s) exceeds max length\n",
							names->keymap);
	    return False;
	}
#ifndef WIN32
	sprintf(buf,
		"xkbcomp -w %d -xkm - -em1 %s -emp %s -eml %s \"%s%s.xkm\"",
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,
		xkm_output_dir,keymap);
#else
	sprintf(buf,
	      "xkbcomp -w %d -xkm - -em1 %s -emp %s -eml %s \"%s%s.xkm\" < %s",
		((xkbDebugFlags<2)?1:((xkbDebugFlags>10)?10:(int)xkbDebugFlags)),
		PRE_ERROR_MSG,ERROR_PREFIX,POST_ERROR_MSG1,
		xkm_output_dir,keymap,tmpname);
#endif
    }
#ifndef WIN32
    out= Popen(buf,"w");
#else
    out= fopen(tmpname, "w");
#endif
    if (out!=NULL) {
#ifdef DEBUG
    if (xkbDebugFlags) {
       ErrorF("XkbDDXCompileKeymapByNames compiling keymap:\n");
       XkbWriteXKBKeymapForNames(stderr,names,NULL,xkb,want,need);
    }
#endif
	XkbWriteXKBKeymapForNames(out,names,NULL,xkb,want,need);
#ifndef WIN32
	if (Pclose(out)==0)
#else
	if (fclose(out)==0)
#endif
	{
#ifdef WIN32
	    if (System(buf) < 0)
		ErrorF("Could not invoke keymap compiler\n");
	    else {
#endif
	    if (nameRtrn) {
		strncpy(nameRtrn,keymap,nameRtrnLen);
		nameRtrn[nameRtrnLen-1]= '\0';
	    }
#if defined(Lynx) && defined(__i386__) && defined(NEED_POPEN_WORKAROUND)
	/* somehow popen/pclose is broken on LynxOS AT 2.3.0/2.4.0!
	 * the problem usually shows up with XF86Setup
	 * this hack waits at max 5 seconds after pclose() returns
	 * for the output of the xkbcomp output file.
	 * I didn't manage to get a patch in time for the 3.2 release
	 */
            {
		int i;
		char name[PATH_MAX];
                if (XkbBaseDirectory!=NULL)
		    sprintf(name,"%s/%s%s.xkm", XkbBaseDirectory
			,xkm_output_dir, keymap);
		else
                    sprintf(name,"%s%s.xkm", xkm_output_dir, keymap);
		for (i = 0; i < 10; i++) {
	            if (access(name, 0) == 0) break;
		    usleep(500000);
		}
#ifdef DEBUG
		if (i) ErrorF(">>>> Waited %d times for %s\n", i, name);
#endif
	    }
#endif
	    return True;
#ifdef WIN32
	    }
#endif
	}
#ifdef DEBUG
	else
	    ErrorF("Error compiling keymap (%s)\n",keymap);
#endif
    }
#ifdef DEBUG
    else {
#ifndef WIN32
	ErrorF("Could not invoke keymap compiler\n");
#else
	ErrorF("Could not open file %s\n", tmpname);
#endif
    }
#endif
    if (nameRtrn)
	nameRtrn[0]= '\0';
    return False;
}

FILE *
XkbDDXOpenConfigFile(char *mapName,char *fileNameRtrn,int fileNameRtrnLen)
{
char	buf[PATH_MAX],xkm_output_dir[PATH_MAX];
FILE *	file;

    buf[0]= '\0';
    if (mapName!=NULL) {
	OutputDirectory(xkm_output_dir);
	if ((XkbBaseDirectory!=NULL)&&(xkm_output_dir[0]!='/')) {
	    if (strlen(XkbBaseDirectory)+strlen(xkm_output_dir)
		     +strlen(mapName)+6 <= PATH_MAX)
	    {
	        sprintf(buf,"%s/%s%s.xkm",XkbBaseDirectory,
					xkm_output_dir,mapName);
	    }
	}
	else if (strlen(xkm_output_dir)+strlen(mapName)+5 <= PATH_MAX)
	    sprintf(buf,"%s%s.xkm",xkm_output_dir,mapName);
	if (buf[0] != '\0')
	    file= fopen(buf,"rb");
	else file= NULL;
    }
    else file= NULL;
    if ((fileNameRtrn!=NULL)&&(fileNameRtrnLen>0)) {
	strncpy(fileNameRtrn,buf,fileNameRtrnLen);
	buf[fileNameRtrnLen-1]= '\0';
    }
    return file;
}

unsigned
XkbDDXLoadKeymapByNames(	DeviceIntPtr		keybd,
				XkbComponentNamesPtr	names,
				unsigned		want,
				unsigned		need,
				XkbFileInfo *		finfoRtrn,
				char *			nameRtrn,
				int 			nameRtrnLen)
{
XkbDescPtr	xkb;
FILE	*	file;
char		fileName[PATH_MAX];
unsigned	missing;

    bzero(finfoRtrn,sizeof(XkbFileInfo));
    if ((keybd==NULL)||(keybd->key==NULL)||(keybd->key->xkbInfo==NULL))
	 xkb= NULL;
    else xkb= keybd->key->xkbInfo->desc;
    if ((names->keycodes==NULL)&&(names->types==NULL)&&
	(names->compat==NULL)&&(names->symbols==NULL)&&
	(names->geometry==NULL)) {
	if (names->keymap==NULL) {
	    bzero(finfoRtrn,sizeof(XkbFileInfo));
	    if (xkb && XkbDetermineFileType(finfoRtrn,XkbXKMFile,NULL) &&
	   				((finfoRtrn->defined&need)==need) ) {
		finfoRtrn->xkb= xkb;
		nameRtrn[0]= '\0';
		return finfoRtrn->defined;
	    }
	    return 0;
	}
	else if (!XkbDDXCompileNamedKeymap(xkb,names,nameRtrn,nameRtrnLen)) {
#ifdef NOISY
	    ErrorF("Couldn't compile keymap file\n");
#endif
	    return 0;
	}
    }
    else if (!XkbDDXCompileKeymapByNames(xkb,names,want,need,
						nameRtrn,nameRtrnLen)){
#ifdef NOISY
	ErrorF("Couldn't compile keymap file\n");
#endif
	return 0;
    }
    file= XkbDDXOpenConfigFile(nameRtrn,fileName,PATH_MAX);
    if (file==NULL) {
	LogMessage(X_ERROR, "Couldn't open compiled keymap file %s\n",fileName);
	return 0;
    }
    missing= XkmReadFile(file,need,want,finfoRtrn);
    if (finfoRtrn->xkb==NULL) {
	LogMessage(X_ERROR, "Error loading keymap %s\n",fileName);
	fclose(file);
	(void) unlink (fileName);
	return 0;
    }
#ifdef DEBUG
    else if (xkbDebugFlags) {
	ErrorF("Loaded %s, defined=0x%x\n",fileName,finfoRtrn->defined);
    }
#endif
    fclose(file);
    (void) unlink (fileName);
    return (need|want)&(~missing);
}

Bool
XkbDDXNamesFromRules(	DeviceIntPtr		keybd,
			char *			rules_name,
			XkbRF_VarDefsPtr	defs,
			XkbComponentNamesPtr	names)
{
char 		buf[PATH_MAX];
FILE *		file;
Bool		complete;
XkbRF_RulesPtr	rules;

    if (!rules_name)
	return False;
    if (XkbBaseDirectory==NULL) {
	if (strlen(rules_name)+7 > PATH_MAX)
	    return False;
	sprintf(buf,"rules/%s",rules_name);
    }
    else {
	if (strlen(XkbBaseDirectory)+strlen(rules_name)+8 > PATH_MAX)
	    return False;
        sprintf(buf,"%s/rules/%s",XkbBaseDirectory,rules_name);
    }
    if ((file= fopen(buf,"r"))==NULL)
	return False;
    if ((rules= XkbRF_Create(0,0))==NULL) {
	fclose(file);
	return False;
    }
    if (!XkbRF_LoadRules(file,rules)) {
	fclose(file);
	XkbRF_Free(rules,True);
	return False;
    }
    bzero((char *)names,sizeof(XkbComponentNamesRec));
    complete= XkbRF_GetComponents(rules,defs,names);
    fclose(file);
    XkbRF_Free(rules,True);
    return complete;
}


