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/*

 *  Copyright (C) 1997, 1998 Olivetti & Oracle Research Laboratory

 *

 *  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.

 */

/*

 * args.c - argument processing.

 */

#include <sys/utsname.h>

#include <vncviewer.h>

#define FLASHPORT  (5400)    /* Offset to listen for `flash' commands */

#define CLIENTPORT (5500)    /* Offset to listen for reverse connections */

#define SERVERPORT (5900)    /* Offset to server for regular connections */

char *programName;

char hostname[256];

int port;

Bool listenSpecified = False;

int listenPort = 0, flashPort = 0;

char *displayname = NULL;

Bool shareDesktop = False;

Bool viewOnly = False;

CARD32 explicitEncodings[MAX_ENCODINGS];

int nExplicitEncodings = 0;

Bool addCopyRect = True;

Bool addRRE = True;

Bool addCoRRE = True;

Bool addHextile = True;

Bool useBGR233 = False;

Bool forceOwnCmap = False;

Bool forceTruecolour = False;

int requestedDepth = 0;

char *geometry = NULL;

int wmDecorationWidth = 4;

int wmDecorationHeight = 24;

char *passwdFile = NULL;

int updateRequestPeriodms = 0;

int updateRequestX = 0;

int updateRequestY = 0;

int updateRequestW = 0;

int updateRequestH = 0;

int rawDelay = 0;

int copyRectDelay = 0;

Bool debug = False;

void

usage()

{

    fprintf(stderr,"\n"

            "usage: %s [<options>] <host>:<display#>\n"

            "       %s [<options>] -listen [<display#>]\n"

            "\n"

            "<options> are:\n"

            "              [-display <display>] [-shared] [-viewonly]\n"

            "              [-raw] [-copyrect] [-rre] [-corre] [-hextile]\n"

            "              [-nocopyrect] [-norre] [-nocorre] [-nohextile]\n"

            "              [-bgr233] [-owncmap] [-truecolour] [-depth <d>]\n"

            "              [-geometry <geom>]\n"

            "              [-wmdecoration <width>x<height>]\n"

            "              [-passwd <passwd-file>]\n"

            "              [-period <ms>]\n"

            "              [-region <x> <y> <width> <height>]\n"

            "              [-rawdelay <ms>] [-copyrectdelay <ms>] [-debug]\n\n"

            ,programName,programName);

    exit(1);

}

void

processArgs(int argc, char **argv)

{

    int i;

    Bool argumentSpecified = False;

    programName = argv[0];

    for (i = 1; i < argc; i++) {

        if (strcmp(argv[i],"-display") == 0) {

            if (++i >= argc) usage();

            displayname = argv[i];

        } else if (strcmp(argv[i],"-shared") == 0) {

            shareDesktop = True;

        } else if (strcmp(argv[i],"-viewonly") == 0) {

            viewOnly = True;

        } else if (strcmp(argv[i],"-rre") == 0) {

            explicitEncodings[nExplicitEncodings++] = rfbEncodingRRE;

            addRRE = False;

        } else if (strcmp(argv[i],"-corre") == 0) {

            explicitEncodings[nExplicitEncodings++] = rfbEncodingCoRRE;

            addCoRRE = False;

        } else if (strcmp(argv[i],"-hextile") == 0) {

            explicitEncodings[nExplicitEncodings++] = rfbEncodingHextile;

            addHextile = False;

        } else if (strcmp(argv[i],"-copyrect") == 0) {

            explicitEncodings[nExplicitEncodings++] = rfbEncodingCopyRect;

            addCopyRect = False;

        } else if (strcmp(argv[i],"-raw") == 0) {

            explicitEncodings[nExplicitEncodings++] = rfbEncodingRaw;

        } else if (strcmp(argv[i],"-norre") == 0) {

            addRRE = False;

        } else if (strcmp(argv[i],"-nocorre") == 0) {

            addCoRRE = False;

        } else if (strcmp(argv[i],"-nohextile") == 0) {

            addHextile = False;

        } else if (strcmp(argv[i],"-nocopyrect") == 0) {

            addCopyRect = False;

        } else if (strcmp(argv[i],"-bgr233") == 0) {

            useBGR233 = True;

        } else if (strcmp(argv[i],"-owncmap") == 0) {

            forceOwnCmap = True;

        } else if (strcmp(argv[i],"-truecolour") == 0) {

            forceTruecolour = True;

        } else if (strcmp(argv[i],"-depth") == 0) {

            if (++i >= argc) usage();

            requestedDepth = atoi(argv[i]);

        } else if (strcmp(argv[i],"-geometry") == 0) {

            if (++i >= argc) usage();

            geometry = argv[i];

        } else if (strcmp(argv[i],"-wmdecoration") == 0) {

            if (++i >= argc) usage();

            if (sscanf(argv[i], "%dx%d",

                       &wmDecorationWidth, &wmDecorationHeight) != 2) usage();

        } else if (strcmp(argv[i],"-passwd") == 0) {

            if (++i >= argc) usage();

            passwdFile = argv[i];

        } else if (strcmp(argv[i],"-period") == 0) {

            if (++i >= argc) usage();

            updateRequestPeriodms = atoi(argv[i]);

        } else if (strcmp(argv[i],"-region") == 0) {

            if ((i+4) >= argc) usage();

            updateRequestX = atoi(argv[i+1]);

            updateRequestY = atoi(argv[i+2]);

            updateRequestW = atoi(argv[i+3]);

            updateRequestH = atoi(argv[i+4]);

            if ((updateRequestX < 0) || (updateRequestY < 0) ||

                (updateRequestW < 0) || (updateRequestH < 0))

                usage();

            i += 4;

        } else if (strcmp(argv[i],"-rawdelay") == 0) {

            if (++i >= argc) usage();

            rawDelay = atoi(argv[i]);

        } else if (strcmp(argv[i],"-copyrectdelay") == 0) {

            if (++i >= argc) usage();

            copyRectDelay = atoi(argv[i]);

        } else if (strcmp(argv[i],"-debug") == 0) {

            debug = True;

        } else if (strcmp(argv[i],"-listen") == 0) {

            if (argumentSpecified) usage();

            listenSpecified = True;

            if (++i < argc) {

                listenPort = CLIENTPORT+atoi(argv[i]);

                flashPort = FLASHPORT+atoi(argv[i]);

            }

        } else if (argv[i][0] != '-') {

            if (argumentSpecified || listenSpecified) usage();

            argumentSpecified = True;

            if (sscanf(argv[i], "%[^:]:%d", hostname, &port) != 2) usage();

            if (port < 100)

                port += SERVERPORT;

        } else {

            usage();

        }

    }

    if (listenSpecified) {

        if (listenPort == 0) {

            char *display;

            char *colonPos;

            struct utsname hostinfo;

            display = XDisplayName(displayname);

            colonPos = strchr(display, ':');

            uname(&hostinfo);

            if (colonPos && ((colonPos == display) ||

                             (strncmp(hostinfo.nodename, display,

                                      strlen(hostinfo.nodename)) == 0))) {

                listenPort = CLIENTPORT+atoi(colonPos+1);

                flashPort = FLASHPORT+atoi(colonPos+1);

            } else {

                fprintf(stderr,"%s: cannot work out which display number to "

                        "listen on.\n", programName);

                fprintf(stderr,

                        "Please specify explicitly with -listen <num>\n");

                exit(1);

            }

        }

    } else if (!argumentSpecified) {

        usage();

    }

}