/*
    mdport.c - Machine Dependent Code for Porting Unix/Curses games

    Copyright (C) 2005 Nicholas J. Kisseberth
    All rights reserved.

    Redistribution and use in source and binary forms, with or without
    modification, are permitted provided that the following conditions
    are met:
    1. Redistributions of source code must retain the above copyright
       notice, this list of conditions and the following disclaimer.
    2. Redistributions in binary form must reproduce the above copyright
       notice, this list of conditions and the following disclaimer in the
       documentation and/or other materials provided with the distribution.
    3. Neither the name(s) of the author(s) nor the names of other contributors
       may be used to endorse or promote products derived from this software
       without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) AND CONTRIBUTORS ``AS IS'' AND
    ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
    IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
    ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR(S) OR CONTRIBUTORS BE LIABLE
    FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
    OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
    HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
    SUCH DAMAGE.
*/

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#if defined(_WIN32)
#include <Windows.h>
#include <Lmcons.h>
#include <process.h>
#pragma warning( disable: 4201 ) 
#include <shlobj.h>
#pragma warning( default: 4201 ) 
#include <conio.h>
#include <sys/types.h>
#include <io.h>
#undef MOUSE_MOVED
#elif defined(__DJGPP__)
#include <process.h>
#else
#include <pwd.h>
#include <sys/utsname.h>
#include <sys/wait.h>
#include <unistd.h>
#include <utmpx.h>
#endif

#include <ctype.h>
#include <stdlib.h>
#include <string.h>

#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif

#if defined(_WIN32) && !defined(__MINGW32__)
#define PATH_MAX MAX_PATH
#endif

#include <curses.h>

#if defined(__INTERIX) || defined(__MSYS__)
#include <term.h>
#else
#ifdef NCURSES_VERSION
#include <ncurses/term.h>
#endif
#endif

#include <stdio.h>
#include <fcntl.h>
#include <limits.h>
#include <sys/stat.h>
#include <signal.h>

#define MOD_MOVE(c) (toupper(c) )

void
md_init()
{
#ifdef __INTERIX
    char *term;

    term = getenv("TERM");

    if (term == NULL)
        setenv("TERM","interix");
#endif
#if defined(__DJGPP__) || defined(_WIN32)
    _fmode = _O_BINARY;
#endif
#if defined(__CYGWIN__) || defined(__MSYS__)
    ESCDELAY=250;
#endif
}

#ifdef	attron
# define	_puts(s)	tputs(s, 0, putchar);
# define	SO		enter_standout_mode
# define	SE		exit_standout_mode
#endif

#ifdef _WIN32
static int md_standout_mode = 0;
#endif

void
md_raw_standout()
{
#ifdef _WIN32
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
    HANDLE hStdout;
    WORD fgattr,bgattr;

    if (md_standout_mode == 0)
    {
        hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
        GetConsoleScreenBufferInfo(hStdout, &csbiInfo);
        fgattr = (csbiInfo.wAttributes & 0xF);
        bgattr = (csbiInfo.wAttributes & 0xF0);
        SetConsoleTextAttribute(hStdout,(fgattr << 4) | (bgattr >> 4));
        md_standout_mode = 1;
    }
#elif !defined(__PDCURSES__)
    _puts(SO);
    fflush(stdout);
#endif
}

void
md_raw_standend()
{
#ifdef _WIN32
    CONSOLE_SCREEN_BUFFER_INFO csbiInfo; 
    HANDLE hStdout;
    WORD fgattr,bgattr;

    if (md_standout_mode == 1)
    {
        hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
        GetConsoleScreenBufferInfo(hStdout, &csbiInfo);
        fgattr = (csbiInfo.wAttributes & 0xF);
        bgattr = (csbiInfo.wAttributes & 0xF0);
        SetConsoleTextAttribute(hStdout,(fgattr << 4) | (bgattr >> 4));
        md_standout_mode = 0;
    }
#elif !defined(__PDCURSES__)
    _puts(SE);
    fflush(stdout);
#endif
}

int
md_unlink_open_file(char *file, int inf)
{
#ifdef _WIN32
    _close(inf);
    _chmod(file, 0600);
    return( _unlink(file) );
#else
    return(unlink(file));
#endif
}

int
md_unlink(char *file)
{
#ifdef _WIN32
    _chmod(file, 0600);
    return( _unlink(file) );
#else
    return(unlink(file));
#endif
}

int
md_creat(char *file, int mode)
{
    int fd;
#ifdef _WIN32
    mode = _S_IREAD | _S_IWRITE;
    fd = _open(file,O_CREAT | O_EXCL | O_WRONLY, mode);
#else
    fd = open(file,O_CREAT | O_EXCL | O_WRONLY, mode);
#endif

    return(fd);
}


void
md_normaluser()
{
#ifndef _WIN32
    setuid(getuid());
    setgid(getgid());
#endif
}

int
md_getuid()
{
#ifndef _WIN32
    return( getuid() );
#else
    return(42);
#endif
}

char *
md_getusername(int uid)
{
    static char login[80];
    char *l = NULL;
#ifdef _WIN32
    LPSTR mybuffer;
    DWORD size = UNLEN + 1;
    TCHAR buffer[UNLEN + 1];

    mybuffer = buffer;
    if (uid != md_getuid())
	strcpy(mybuffer, "someone");
    else
	GetUserName(mybuffer,&size);
    l = mybuffer;
#endif
#if !defined(_WIN32) && !defined(DJGPP)
    struct passwd *pw;

    pw = getpwuid(getuid());

    if (pw != NULL)
        l = pw->pw_name;
#endif

    if ((l == NULL) || (*l == '\0'))
        if ( (l = getenv("USERNAME")) == NULL )
            if ( (l = getenv("LOGNAME")) == NULL )
                if ( (l = getenv("USER")) == NULL )
                    l = "nobody";

    strncpy(login,l,80);
    login[79] = 0;

    return(login);
}

char *
md_gethomedir()
{
    static char homedir[PATH_MAX];
    char *h = NULL;
    size_t len;
#if defined(_WIN32)
    TCHAR szPath[PATH_MAX];
#endif
#if defined(_WIN32) || defined(DJGPP)
        char slash = '\\';
#else
    char slash = '/';
    struct passwd *pw;
    pw = getpwuid(getuid());

    if (pw != NULL)
        h = pw->pw_dir;

    if (strcmp(h,"/") == 0)
        h = NULL;
#endif
    homedir[0] = 0;
#ifdef _WIN32
    if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, 0, szPath)))
        h = szPath;
#endif

    if ( (h == NULL) || (*h == '\0') )
    {
        if ( (h = getenv("HOME")) == NULL )
        {
            if ( (h = getenv("HOMEDRIVE")) == NULL)
                h = "";
            else
            {
                strncpy(homedir,h,PATH_MAX-1);
                homedir[PATH_MAX-1] = 0;

                if ( (h = getenv("HOMEPATH")) == NULL)
                    h = "";
            }
        }
    }


    len = strlen(homedir);
    strncat(homedir,h,PATH_MAX-len-1);
    len = strlen(homedir);

    if ((len > 0) && (homedir[len-1] != slash)) {
        homedir[len] = slash;
        homedir[len+1] = 0;
    }

    return(homedir);
}

void
md_sleep(int s)
{
#ifdef _WIN32
    Sleep(s);
#else
    sleep(s);
#endif
}

char *
md_getshell()
{
    static char shell[PATH_MAX];
    char *s = NULL;
#ifdef _WIN32
    char *def = "C:\\WINDOWS\\SYSTEM32\\CMD.EXE";
#elif defined(__DJGPP__)
    char *def = "C:\\COMMAND.COM";
#else
    char *def = "/bin/sh";
    struct passwd *pw;
    pw = getpwuid(getuid());
    if (pw != NULL)
        s = pw->pw_shell;
#endif
    if ((s == NULL) || (*s == '\0'))
        if ( (s = getenv("COMSPEC")) == NULL)
            if ( (s = getenv("SHELL")) == NULL)
                if ( (s = getenv("SystemRoot")) == NULL)
                    s = def;

    strncpy(shell,s,PATH_MAX);
    shell[PATH_MAX-1] = 0;

    return(shell);
}

int
md_shellescape()
{
#if (!defined(_WIN32) && !defined(__DJGPP__))
    int ret_status;
    int pid;
    void (*myquit)(int);
    void (*myend)(int);
#endif
    char *sh;

    sh = md_getshell();

#if defined(_WIN32)
    return((int)_spawnl(_P_WAIT,sh,"shell",NULL,0));
#elif defined(__DJGPP__)
    return ( spawnl(P_WAIT,sh,"shell",NULL,0) );
#else
    while((pid = fork()) < 0)
        sleep(1);

    if (pid == 0) /* Shell Process */
    {
        /*
         * Set back to original user, just in case
         */
        setuid(getuid());
        setgid(getgid());
        execl(sh == NULL ? "/bin/sh" : sh, "shell", "-i", (char *) NULL);
        perror("No shelly");
        _exit(-1);
    }
    else /* Application */
    {
	myend = signal(SIGINT, SIG_IGN);
#ifdef SIGQUIT
        myquit = signal(SIGQUIT, SIG_IGN);
#endif  
        while (wait(&ret_status) != pid)
            continue;
	    
        signal(SIGINT, myend);
#ifdef SIGQUIT
        signal(SIGQUIT, myquit);
#endif
    }

    return(ret_status);
#endif
}

int
directory_exists(char *dirname)
{
    struct stat sb;

    if (stat(dirname, &sb) == 0) /* path exists */
        return (sb.st_mode & S_IFDIR);

    return(0);
}

char *
md_getroguedir()
{
    static char path[1024];
    char *end,*home;

    if ( (home = getenv("ROGUEHOME")) != NULL)
    {
        if (*home)
        {
            strncpy(path, home, PATH_MAX - 20);

            end = &path[strlen(path)-1];

            while( (end >= path) && ((*end == '/') || (*end == '\\')))
                *end-- = '\0';

            if (directory_exists(path))
                return(path);
        }
    }

    if (directory_exists("/var/games/roguelike"))
        return("/var/games/roguelike");
    if (directory_exists("/var/lib/roguelike"))
        return("/var/lib/roguelike");
    if (directory_exists("/var/roguelike"))
        return("/var/roguelike");
    if (directory_exists("/usr/games/lib"))
        return("/usr/games/lib");
    if (directory_exists("/games/roguelik"))
        return("/games/roguelik");
    if (directory_exists(md_gethomedir()))
	return(md_gethomedir());
    return("");
}

char *
md_getrealname(int uid)
{
    static char uidstr[20];
#if !defined(_WIN32) && !defined(DJGPP)
    struct passwd *pp;

    if ((pp = getpwuid(uid)) == NULL)
    {
        sprintf(uidstr,"%d", uid);
        return(uidstr);
    }
    else
        return(pp->pw_name);
#else
   sprintf(uidstr,"%d", uid);
   return(uidstr);
#endif
}

extern char *xcrypt(char *key, char *salt);

char *
md_crypt(char *key, char *salt)
{
    return( xcrypt(key,salt) );
}

char *
md_getpass(char *prompt)
{
#ifdef _WIN32
    static char password_buffer[9];
    char *p = password_buffer;
    int c, count = 0;
    int max_length = 9;

    fflush(stdout);
    /* If we can't prompt, abort */
    if (fputs(prompt, stderr) < 0)
    {
        *p = '\0';
        return NULL;
    }

    for(;;)
    {
        /* Get a character with no echo */
        c = _getch();

        /* Exit on interrupt (^c or ^break) */
        if (c == '\003' || c == 0x100)
            exit(1);

        /* Terminate on end of line or file (^j, ^m, ^d, ^z) */
        if (c == '\r' || c == '\n' || c == '\004' || c == '\032')
            break;

        /* Back up on backspace */
        if (c == '\b')
        {
            if (count)
                count--;
            else if (p > password_buffer)
                p--;
            continue;
        }

        /* Ignore DOS extended characters */
        if ((c & 0xff) != c)
            continue;

        /* Add to password if it isn't full */
        if (p < password_buffer + max_length - 1)
            *p++ = (char) c;
        else
            count++;
    }
   *p = '\0';

   fputc('\n', stderr);

   return password_buffer;
#else
   return( (char *) getpass(prompt) );
#endif
}


int md_endian = 0x01020304;

unsigned long int
md_ntohl(unsigned long int x)
{
#ifndef HAVE_ARPA_INET_H
    if ( *((char *)&md_endian) == 0x01 )
        return(x);
    else
        return( ((x & 0x000000ffU) << 24) |
                ((x & 0x0000ff00U) <<  8) |
                ((x & 0x00ff0000U) >>  8) |
                ((x & 0xff000000U) >> 24) );
#else
    return( ntohl(x) );
#endif
}

unsigned long int
md_htonl(unsigned long int x)
{
#ifndef HAVE_ARPA_INET_H
    if ( *((char *)&md_endian) == 0x01 )
        return(x);
    else
        return( ((x & 0x000000ffU) << 24) |
                ((x & 0x0000ff00U) <<  8) |
                ((x & 0x00ff0000U) >>  8) |
                ((x & 0xff000000U) >> 24) );
#else
    return( htonl(x) );
#endif
}

int
md_ucount()
{
#ifdef __DJGPP__
    return(1);
#elif defined(_WIN32)
    return(1);
#else
    struct utmpx *up=NULL;
    int count=0;

    setutxent();    
    do
    {
	up = getutxent();
	if (up && up->ut_type == USER_PROCESS)
	    count++;
    } while(up != NULL);
   
   endutxent();

   return(count);
#endif
}

int
md_getloadavg(double *avg)
{
#if defined(__GLIBC__) || defined(_BSD)
    if (getloadavg(avg, 3) == -1)
#endif
    {
	avg[0] = avg[1] = avg[2] = 0.0;
	return -1;
    }
    return 3;
}

long
md_random()
{
#ifdef _WIN32
    return(rand());
#else
    return( random() );
#endif
}

void
md_srandom(unsigned x)
{
#ifdef _WIN32
    srand(x);
#else
    srandom(x);
#endif
}

int
md_rand()
{
#ifdef _WIN32
    return(rand());
#else
    return(lrand48() & 0x7fffffff);
#endif
}

void
md_srand(int seed)
{
#ifdef _WIN32
    srand(seed);
#else
    srand48(seed);
#endif
}

char *
md_strdup(const char *s)
{
#ifdef _WIN32
    return( _strdup(s) );
#else
    return(strdup(s));
#endif
}

long
md_memused()
{
#ifdef _WIN32
    MEMORYSTATUS stat;

    GlobalMemoryStatus(&stat);

    return((long)stat.dwTotalPageFile);
#else
    return( (long)sbrk(0) );
#endif
}

char *
md_gethostname()
{
    static char nodename[80];
    char *n = NULL;
#if !defined(_WIN32) && !defined(__DJGPP__)
    struct utsname ourname;

    if (uname(&ourname) == 0)
        n = ourname.nodename;
#endif
    if ((n == NULL) || (*n == '\0'))
        if ( (n = getenv("COMPUTERNAME")) == NULL)
            if ( (n = getenv("HOSTNAME")) == NULL)
                n = "localhost";

    strncpy(nodename, n, 80);
    nodename[79] = 0;

    return(nodename);
}

int
md_erasechar()
{
#ifdef BSD
    return(_tty.sg_erase); /* process erase character */
#elif defined(USG5_0)
    return(_tty.c_cc[VERASE]); /* process erase character */
#else /* USG5_2 .... curses */
    return( erasechar() ); /* process erase character */
#endif
}

int
md_killchar()
{
#ifdef BSD
    return(_tty.sg_kill);
#elif defined(USG5_0)
    return(_tty.c_cc[VKILL]);
#else /* USG5_2 ..... curses */
    return( killchar() );
#endif
}

/*
 * unctrl:
 *	Print a readable version of a certain character
 */

const char *
md_unctrl(char ch)
{
#if USG5_0
    extern char *_unctrl[];		/* Defined in curses library */

    return _unctrl[ch&0177];
#else
    return( unctrl(ch) );
#endif
}

void
md_flushinp()
{
#ifdef BSD
    ioctl(0, TIOCFLUSH);
#elif defined(USG5_0)
    ioctl(_tty_ch,TCFLSH,0)
#else /* USG5_2.... curses */
    flushinp();
#endif
}

/*
    Cursor/Keypad Support

    Sadly Cursor/Keypad support is less straightforward than it should be.

    The various terminal emulators/consoles choose to differentiate the
    cursor and keypad keys (with modifiers) in different ways (if at all!).
    Furthermore they use different code set sequences for each key only
    a subset of which the various curses libraries recognize. Partly due
    to incomplete termcap/terminfo entries and partly due to inherent
    limitations of those terminal capability databases.

    I give curses first crack at decoding the sequences. If it fails to decode
    it we check for common ESC-prefixed sequences.

    All cursor/keypad results are translated into standard rogue movement
    commands.

    Unmodified keys are translated to walk commands: hjklyubn
    Modified (shift,control,alt) are translated to run commands: HJKLYUBN

    Console and supported (differentiated) keys
    Interix:  Cursor Keys, Keypad, Ctl-Keypad
    Cygwin:   Cursor Keys, Keypad, Alt-Cursor Keys
    MSYS:     Cursor Keys, Keypad, Ctl-Cursor Keys, Ctl-Keypad
    Win32:    Cursor Keys, Keypad, Ctl/Shift/Alt-Cursor Keys, Ctl/Alt-Keypad
    DJGPP:    Cursor Keys, Keypad, Ctl/Shift/Alt-Cursor Keys, Ctl/Alt-Keypad

    Interix Console (raw, ncurses)
    ==============================
    normal      shift           ctrl        alt
    ESC [D,     ESC F^,         ESC [D,     ESC [D          /# Left         #/
    ESC [C,     ESC F$,         ESC [C,     ESC [C          /# Right        #/
    ESC [A,     ESC F-,         local win,  ESC [A          /# Up           #/
    ESC [B,     ESC F+,         local win,  ESC [B          /# Down         #/
    ESC [H,     ESC [H,         ESC [H,     ESC [H          /# Home         #/
    ESC [S,     local win,      ESC [S,     ESC [S          /# Page Up      #/
    ESC [T,     local win,      ESC [T,     ESC [T          /# Page Down    #/
    ESC [U,     ESC [U,         ESC [U,     ESC [U          /# End          #/
    ESC [D,     ESC F^,         ESC [D,     O               /# Keypad Left  #/
    ESC [C,     ESC F$,         ESC [C,     O               /# Keypad Right #/
    ESC [A,     ESC [A,         ESC [-1,    O               /# Keypad Up    #/
    ESC [B,     ESC [B,         ESC [-2,    O               /# Keypad Down  #/
    ESC [H,     ESC [H,         ESC [-263,  O               /# Keypad Home  #/
    ESC [S,     ESC [S,         ESC [-19,   O               /# Keypad PgUp  #/
    ESC [T,     ESC [T,         ESC [-20,   O               /# Keypad PgDn  #/
    ESC [U,     ESC [U,         ESC [-21,   O               /# Keypad End   #/
    nothing,    nothing,        nothing,    O               /# Kaypad 5     #/

    Interix Console (term=interix, ncurses)
    ==============================
    KEY_LEFT,   ESC F^,         KEY_LEFT,   KEY_LEFT        /# Left         #/
    KEY_RIGHT,  ESC F$,         KEY_RIGHT,  KEY_RIGHT       /# Right        #/
    KEY_UP,     0x146,          local win,  KEY_UP          /# Up           #/
    KEY_DOWN,   0x145,          local win,  KEY_DOWN        /# Down         #/
    ESC [H,     ESC [H,         ESC [H,     ESC [H          /# Home         #/
    KEY_PPAGE,  local win,      KEY_PPAGE,  KEY_PPAGE       /# Page Up      #/
    KEY_NPAGE,  local win,      KEY_NPAGE,  KEY_NPAGE       /# Page Down    #/
    KEY_LL,     KEY_LL,         KEY_LL,     KEY_LL          /# End          #/
    KEY_LEFT,   ESC F^,         ESC [-4,    O               /# Keypad Left  #/
    KEY_RIGHT,  ESC F$,         ESC [-3,    O               /# Keypad Right #/
    KEY_UP,     KEY_UP,         ESC [-1,    O               /# Keypad Up    #/
    KEY_DOWN,   KEY_DOWN,       ESC [-2,    O               /# Keypad Down  #/
    ESC [H,     ESC [H,         ESC [-263,  O               /# Keypad Home  #/
    KEY_PPAGE,  KEY_PPAGE,      ESC [-19,   O               /# Keypad PgUp  #/
    KEY_NPAGE,  KEY_NPAGE,      ESC [-20,   O               /# Keypad PgDn  #/
    KEY_LL,     KEY_LL,         ESC [-21,   O               /# Keypad End   #/
    nothing,    nothing,        nothing,    O               /# Keypad 5     #/

    Cygwin Console (raw, ncurses)
    ==============================
    normal      shift           ctrl        alt
    ESC [D,     ESC [D,         ESC [D,     ESC ESC [D      /# Left         #/
    ESC [C,     ESC [C,         ESC [C,     ESC ESC [C      /# Rght         #/
    ESC [A,     ESC [A,         ESC [A,     ESC ESC [A      /# Up           #/
    ESC [B,     ESC [B,         ESC [B,     ESC ESC [B      /# Down         #/
    ESC [1~,    ESC [1~,        ESC [1~,    ESC ESC [1~     /# Home         #/
    ESC [5~,    ESC [5~,        ESC [5~,    ESC ESC [5~     /# Page Up      #/
    ESC [6~,    ESC [6~,        ESC [6~,    ESC ESC [6~     /# Page Down    #/
    ESC [4~,    ESC [4~,        ESC [4~,    ESC ESC [4~     /# End          #/
    ESC [D,     ESC [D,         ESC [D,     ESC ESC [D,O    /# Keypad Left  #/
    ESC [C,     ESC [C,         ESC [C,     ESC ESC [C,O    /# Keypad Right #/
    ESC [A,     ESC [A,         ESC [A,     ESC ESC [A,O    /# Keypad Up    #/
    ESC [B,     ESC [B,         ESC [B,     ESC ESC [B,O    /# Keypad Down  #/
    ESC [1~,    ESC [1~,        ESC [1~,    ESC ESC [1~,O   /# Keypad Home  #/
    ESC [5~,    ESC [5~,        ESC [5~,    ESC ESC [5~,O   /# Keypad PgUp  #/
    ESC [6~,    ESC [6~,        ESC [6~,    ESC ESC [6~,O   /# Keypad PgDn  #/
    ESC [4~,    ESC [4~,        ESC [4~,    ESC ESC [4~,O   /# Keypad End   #/
    ESC [-71,   nothing,        nothing,    O               /# Keypad 5     #/

    Cygwin Console (term=cygwin, ncurses)
    ==============================
    KEY_LEFT,   KEY_LEFT,       KEY_LEFT,   ESC-260         /# Left         #/
    KEY_RIGHT,  KEY_RIGHT,      KEY_RIGHT,  ESC-261         /# Rght         #/
    KEY_UP,     KEY_UP,         KEY_UP,     ESC-259         /# Up           #/
    KEY_DOWN,   KEY_DOWN,       KEY_DOWN,   ESC-258         /# Down         #/
    KEY_HOME,   KEY_HOME,       KEY_HOME,   ESC-262         /# Home         #/
    KEY_PPAGE,  KEY_PPAGE,      KEY_PPAGE,  ESC-339         /# Page Up      #/
    KEY_NPAGE,  KEY_NPAGE,      KEY_NPAGE,  ESC-338         /# Page Down    #/
    KEY_END,    KEY_END,        KEY_END,    ESC-360         /# End          #/
    KEY_LEFT,   KEY_LEFT,       KEY_LEFT,   ESC-260,O       /# Keypad Left  #/
    KEY_RIGHT,  KEY_RIGHT,      KEY_RIGHT,  ESC-261,O       /# Keypad Right #/
    KEY_UP,     KEY_UP,         KEY_UP,     ESC-259,O       /# Keypad Up    #/
    KEY_DOWN,   KEY_DOWN,       KEY_DOWN,   ESC-258,O       /# Keypad Down  #/
    KEY_HOME,   KEY_HOME,       KEY_HOME,   ESC-262,O       /# Keypad Home  #/
    KEY_PPAGE,  KEY_PPAGE,      KEY_PPAGE,  ESC-339,O       /# Keypad PgUp  #/
    KEY_NPAGE,  KEY_NPAGE,      KEY_NPAGE,  ESC-338,O       /# Keypad PgDn  #/
    KEY_END,    KEY_END,        KEY_END,    ESC-360,O       /# Keypad End   #/
    ESC [G,     nothing,        nothing,    O               /# Keypad 5     #/

    MSYS Console (raw, ncurses)
    ==============================
    normal      shift           ctrl        alt
    ESC OD,     ESC [d,         ESC Od      nothing         /# Left         #/
    ESC OE,     ESC [e,         ESC Oe,     nothing         /# Right        #/
    ESC OA,     ESC [a,         ESC Oa,     nothing         /# Up           #/
    ESC OB,     ESC [b,         ESC Ob,     nothing         /# Down         #/
    ESC [7~,    ESC [7$,        ESC [7^,    nothing         /# Home         #/
    ESC [5~,    local window,   ESC [5^,    nothing         /# Page Up      #/
    ESC [6~,    local window,   ESC [6^,    nothing         /# Page Down    #/
    ESC [8~,    ESC [8$,        ESC [8^,    nothing         /# End          #/
    ESC OD,     ESC [d,         ESC Od      O               /# Keypad Left  #/
    ESC OE,     ESC [c,         ESC Oc,     O               /# Keypad Right #/