/*
 * Copyright (c) 1994-2000 FUJITSU LABORATORIES LIMITED 
 * All rights reserved.
 * 
 * FUJITSU LABORATORIES LIMITED ("FLL") hereby grants you a limited,
 * non-exclusive and royalty-free license to use, copy, modify and
 * redistribute, solely for non-commercial and non-profit purposes, the
 * computer program, "Risa/Asir" ("SOFTWARE"), subject to the terms and
 * conditions of this Agreement. For the avoidance of doubt, you acquire
 * only a limited right to use the SOFTWARE hereunder, and FLL or any
 * third party developer retains all rights, including but not limited to
 * copyrights, in and to the SOFTWARE.
 * 
 * (1) FLL does not grant you a license in any way for commercial
 * purposes. You may use the SOFTWARE only for non-commercial and
 * non-profit purposes only, such as academic, research and internal
 * business use.
 * (2) The SOFTWARE is protected by the Copyright Law of Japan and
 * international copyright treaties. If you make copies of the SOFTWARE,
 * with or without modification, as permitted hereunder, you shall affix
 * to all such copies of the SOFTWARE the above copyright notice.
 * (3) An explicit reference to this SOFTWARE and its copyright owner
 * shall be made on your publication or presentation in any form of the
 * results obtained by use of the SOFTWARE.
 * (4) In the event that you modify the SOFTWARE, you shall notify FLL by
 * e-mail at risa-admin@sec.flab.fujitsu.co.jp of the detailed specification
 * for such modification or the source code of the modified part of the
 * SOFTWARE.
 * 
 * THE SOFTWARE IS PROVIDED AS IS WITHOUT ANY WARRANTY OF ANY KIND. FLL
 * MAKES ABSOLUTELY NO WARRANTIES, EXPRESSED, IMPLIED OR STATUTORY, AND
 * EXPRESSLY DISCLAIMS ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS
 * FOR A PARTICULAR PURPOSE OR NONINFRINGEMENT OF THIRD PARTIES'
 * RIGHTS. NO FLL DEALER, AGENT, EMPLOYEES IS AUTHORIZED TO MAKE ANY
 * MODIFICATIONS, EXTENSIONS, OR ADDITIONS TO THIS WARRANTY.
 * UNDER NO CIRCUMSTANCES AND UNDER NO LEGAL THEORY, TORT, CONTRACT,
 * OR OTHERWISE, SHALL FLL BE LIABLE TO YOU OR ANY OTHER PERSON FOR ANY
 * DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE OR CONSEQUENTIAL
 * DAMAGES OF ANY CHARACTER, INCLUDING, WITHOUT LIMITATION, DAMAGES
 * ARISING OUT OF OR RELATING TO THE SOFTWARE OR THIS AGREEMENT, DAMAGES
 * FOR LOSS OF GOODWILL, WORK STOPPAGE, OR LOSS OF DATA, OR FOR ANY
 * DAMAGES, EVEN IF FLL SHALL HAVE BEEN INFORMED OF THE POSSIBILITY OF
 * SUCH DAMAGES, OR FOR ANY CLAIM BY ANY OTHER PARTY. EVEN IF A PART
 * OF THE SOFTWARE HAS BEEN DEVELOPED BY A THIRD PARTY, THE THIRD PARTY
 * DEVELOPER SHALL HAVE NO LIABILITY IN CONNECTION WITH THE USE,
 * PERFORMANCE OR NON-PERFORMANCE OF THE SOFTWARE.
 *
 * $OpenXM: OpenXM_contrib2/asir2000/builtin/ctrl.c,v 1.49 2016/03/31 06:41:20 ohara Exp $ 
*/
#include "ca.h"
#include "parse.h"
#include <string.h>
#if defined(VISUAL) || defined(__MINGW32__)
#include <windows.h>
#include <winnls.h>
#else
#include <locale.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/wait.h>
#include <sys/utsname.h>
#endif

static struct {
	char *type;
	char *kernel;
	char *name;
	char *arch;
	char *release;
	char *full;
	char *lang;
} sysinfo;

void Pctrl();
void Psysinfo(LIST *rp);
static void get_sysinfo();

struct ftab ctrl_tab[] = {
	{"ctrl",Pctrl,-2},
	{"asir_env",Pctrl,-2},
	{"sysinfo", Psysinfo, 0},
	{0,0,0},
};

extern int error_in_timer;
extern int prtime,nez,echoback,bigfloat,evalef;
extern int debug_up;
extern int GC_max_heap_size,Verbose,hideargs,hex_output,do_server_in_X11;
extern int do_message,do_terse;
extern int ox_batch,ox_check,ox_exchange_mathcap;
extern int f4_nocheck;
extern int StrassenSize;
extern int outputstyle;
extern int fortran_output;
extern int real_digit;
extern int real_binary;
extern int allow_laurent;
#if defined(INTERVAL)
extern int zerorewrite;
extern int Itvplot;
#endif
extern int double_output;
extern int use_new_hensel;
extern int print_quote;
extern int show_crossref;
extern Obj user_defined_prompt;
extern int asir_setenv;
extern int show_orderspec;
extern int no_debug_on_error;
extern int diag_period;
extern int weight_check;
extern char **ASIRLOADPATH;
extern int ASIRLOADPATH_LEN;

static struct {
	char *key;
	int *val;
} ctrls[] = {
	{"error_in_timer",&error_in_timer},
	{"cputime",&prtime},
	{"nez",&nez},
	{"echo",&echoback},
	{"bigfloat",&bigfloat},
	{"evalef",&evalef},
	{"verbose",&Verbose},
	{"quiet_mode",&do_quiet},
	{"hideargs",&hideargs},
	{"hex",&hex_output},
	{"debug_window",&do_server_in_X11},
	{"message",&do_message},
	{"terse",&do_terse},
	{"debug_up",&debug_up},
	{"no_prompt",&do_quiet},
	{"asir_setenv",&asir_setenv},
	{"ox_batch",&ox_batch},
	{"ox_check",&ox_check},
	{"ox_exchange_mathcap",&ox_exchange_mathcap},
	{"f4_nocheck",&f4_nocheck},
	{"StrassenSize",&StrassenSize},
	{"outputstyle",&outputstyle},
	{"double_output",&double_output},
	{"real_digit",&real_digit},
	{"real_binary",&real_binary},
	{"fortran_output",&fortran_output},
	{"new_hensel",&use_new_hensel},
	{"print_quote",&print_quote},
	{"show_crossref",&show_crossref},
	{"allow_laurent",&allow_laurent},
	{"show_orderspec",&show_orderspec},
	{"no_debug_on_error",&no_debug_on_error},
	{"diag_period",&diag_period},
	{"weight_check",&weight_check},
#if defined(INTERVAL)
	{"zerorewrite",&zerorewrite},
	{"itvplotsize",&Itvplot},
#endif
	{0,0},
};

void Pctrl(arg,rp)
NODE arg;
Q *rp;
{
	int t,i,n;
	int nm,dv;
	N num,den;
	Q c;
	char *key;
	char buf[BUFSIZ];
	char *str;
	STRING s;
	NODE node,p;
	LIST list;
	extern Q ox_pari_stream;
	extern int ox_pari_stream_initialized;

	if ( !arg ) {
		*rp = 0;
		return;
	}
	key = BDY((STRING)ARG0(arg));
	if ( !strcmp(key,"adj") ) {
		/* special treatment is necessary for "adj" */
		if ( argc(arg) == 1 ) {
			Risa_GC_get_adj(&nm,&dv);
			UTON(dv,num);
			UTON(nm,den);
		} else {
			c = (Q)ARG1(arg);
			if ( !c )
				error("ctrl : adj : invalid argument");
			num = NM(c);
			den = !DN(c)?ONEN:DN(c);
			dv = BD(num)[0];
			nm = BD(den)[0];
			Risa_GC_set_adj(nm,dv);
		}
		NDTOQ(num,den,1,*rp);
		return;
	} else if ( !strcmp(key,"prompt") ) {
		/* special treatment is necessary for "prompt" */
		if ( argc(arg) == 1 ) {
		  if ((!do_quiet) && (user_defined_prompt == (Obj)0)) *rp=ONE;
          else *rp = (Q)user_defined_prompt;
		} else {
			c = (Q)ARG1(arg);
			if ( !c ) {
				do_quiet = 1;
				user_defined_prompt = 0;
				*rp = 0;
			} else if ( OID(c) == O_STR ) {
				str = BDY((STRING)c);
			 	for ( i = 0, n = 0; str[i]; i++ )
					if ( str[i] == '%' )
						n++;
				if ( n >= 2 )
					error("ctrl : prompt : invalid prompt specification");	
				do_quiet = 1;
				user_defined_prompt = (Obj)c;
				*rp = c;
			} else if ( NUM(c) && RATN(c) && UNIQ(c) ) {
				user_defined_prompt = 0;
				do_quiet = 0;
			} else {
				error("ctrl : prompt : invalid argument");	
			}
		}
		return;
	} else if ( !strcmp(key,"loadpath") ) {
		*rp = 0;
		if ( argc(arg) == 1 ) {
			if( ASIRLOADPATH[0] ) {
				for(i=0; ASIRLOADPATH[i]; i++) {
				}
				for(i--,p=NULL; i>=0; i--,p=node) {
					MKSTR(s,ASIRLOADPATH[i]);
					MKNODE(node,s,p);
				}
				MKLIST(list,node);
				*rp = list;
			}
		} else {
			list = (LIST)ARG1(arg);
			if ( OID(list) == O_LIST ) {
				for(i=0,p=BDY(list); p; i++,p=NEXT(p)) {
					s=(STRING)BDY(p);
					if(!s || OID(s)!=O_STR) {
						error("ctrl : loadpath : invalid argument");
					}
				}
				if(i >= ASIRLOADPATH_LEN) {
					ASIRLOADPATH_LEN = i+1;
					ASIRLOADPATH = (char **)MALLOC(sizeof(char *)*ASIRLOADPATH_LEN);
				}
				for(i=0,p=BDY(list); p; i++,p=NEXT(p)) {
					ASIRLOADPATH[i] = (char *)BDY((STRING)BDY(p));
				}
				ASIRLOADPATH[i] = NULL;
			}else {
				error("ctrl : loadpath : invalid argument");
			}
		}
		return;
	} else if ( !strcmp(key,"oxpari_id") ) {
        *rp = 0;
        if ( argc(arg) == 1 ) {
            if(!ox_pari_stream_initialized) {
                t=-1;
                STOQ(t,*rp);
            }else {
                *rp = ox_pari_stream;
            }
        }else {
			c = (Q)ARG1(arg);
			if ( !c || ( NUM(c) && INT(c) && SGN(c)>0 ) ) {
				ox_pari_stream_initialized = 1;
				ox_pari_stream = c;
				*rp = c;
			}else {
                t=-1;
                STOQ(t,*rp);
			}
		}
		return;
	}
	for ( i = 0; ctrls[i].key; i++ )
		if ( !strcmp(key,ctrls[i].key) )
			break;
	if ( ctrls[i].key ) {
		if ( argc(arg) == 1 )
			t = *ctrls[i].val;
		else
			*ctrls[i].val = t = QTOS((Q)ARG1(arg));
		STOQ(t,*rp);
	} else {
		sprintf(buf,"ctrl : %s : no such key",key);
		error(buf);
	}
}

void Psysinfo(LIST *rp)
{
    int i;
    NODE n,p;
    STRING s[7];

    get_sysinfo();
    MKSTR(s[0],sysinfo.type);  MKSTR(s[1],sysinfo.kernel);   MKSTR(s[2],sysinfo.name);
    MKSTR(s[3],sysinfo.arch);  MKSTR(s[4],sysinfo.release);  MKSTR(s[5],sysinfo.full);
    MKSTR(s[6],sysinfo.lang);
    for(i=6,p=NULL; i>=0; i--,p=n) {
        MKNODE(n,s[i],p);
    }
    MKLIST(*rp,n);
}

#if !defined(VISUAL) && !defined(__MINGW32__)

static char *get_lang()
{
    char *c, *p, *q;
    c = setlocale(LC_ALL, NULL); /* saving current locale */
    p = setlocale(LC_ALL, "");
    q = (char *)MALLOC(strlen(p)+1);
    strcpy(q,p);
    setlocale(LC_ALL, c);        /* restoring current locale */
    return q;
}

static char *myuname(char *option)
{
    char buf[BUFSIZ];
    char *s;
    int fd[2], status, pid;
    *buf = 0;
    if (socketpair(AF_UNIX, SOCK_STREAM, 0, fd) < 0) {
        *buf = 0; return NULL;
    }
    pid = fork();
    if (pid < 0) {
        return NULL;
    }else if (pid == 0) {
        dup2(fd[1], 1);
        close(2);
        execlp("uname", "uname", option, NULL);
    }
    waitpid(pid, &status, 0);
    if (status) { /* error */
        return NULL;
    }
    s = buf;
    if( !read(fd[0], s, BUFSIZ-1) || (s = strchr(s, '\n')) ) {
        *s = 0;
    }
    close(fd[0]);
    close(fd[1]);
    s = (char *)MALLOC(strlen(buf)+1);
    strcpy(s, buf);
    return s;
}

static void get_sysinfo()
{
    static struct utsname u;
    static int initialized = 0;
    if (initialized) {
        return;
    }
    initialized = 1;
    uname(&u);
    sysinfo.kernel = u.sysname;
#if defined(__DARWIN__)
    sysinfo.type   = "macosx";
    sysinfo.name   = sysinfo.kernel;
#else
    sysinfo.type   = "unix";
    sysinfo.name   = myuname("-o"); // not work on Darwin
    if (!sysinfo.name) {
        sysinfo.name = sysinfo.kernel;
    }
#endif
    sysinfo.arch   = u.machine;
    sysinfo.release= u.release;
    sysinfo.full   = myuname("-a");
    sysinfo.lang   = get_lang();
}

#else

/* http://msdn.microsoft.com/ja-jp/library/windows/desktop/ms724834%28v=vs.85%29.aspx */
static char *osnameNT(int major, int minor)
{
    if ((major == 3 && minor == 51) || (major == 4 && minor == 0)) {
        return "WindowsNT";
    }else if (major == 5 && minor == 0) {
        return "Windows2000";
    }else if (major == 5 && minor == 1) {
        return "WindowsXP";
    }else if (major == 5 && minor == 2) {
        return "Windows2003 Server";
    }else if (major == 6 && minor == 0) {
        return "WindowsVista";
    }else if (major == 6 && minor == 1) {
        return "Windows7";
    }else if (major == 6 && minor == 2) {
        return "Windows8";
    }else if (major == 6 && minor == 3) {
        return "Windows8.1";
    }
    return "unknown";
}

static char *osname95(int major, int minor)
{
    if (major == 4 && minor == 0) {
        return "Windows95";
    }else if (major == 4 && minor == 10) {
        return "Windows98";
    }else if (major == 4 && minor == 90) {
        return "WindowsMe";
    }
    return "unknown";
}

static char *get_lang()
{
    char lang[BUFSIZ];
    char *s;
    if(GetLocaleInfo(GetUserDefaultLCID(), LOCALE_SISO639LANGNAME, lang, BUFSIZ)) {
        s = (char *)MALLOC(strlen(lang)+1);
        strcpy(s,lang);
        return s;
    }
    return "en"; // English
}

static void get_sysinfo()
{
    int arch64 = 0;
    char buf[BUFSIZ];
    OSVERSIONINFO v;
    char *s;
    static int initialized = 0;

    if (initialized) {
        return;
    }
    initialized = 1;

    v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx(&v);

    sysinfo.type = "windows";
    sysinfo.arch = "x86";
    sprintf(buf, "%d.%d.%d", v.dwMajorVersion, v.dwMinorVersion, v.dwBuildNumber);
    s = (char *)MALLOC(strlen(buf)+1);
    strcpy(s, buf);
    sysinfo.release = s;

    if (v.dwPlatformId == VER_PLATFORM_WIN32_NT) {
        sysinfo.kernel = "WindowsNT";
        sysinfo.name = osnameNT(v.dwMajorVersion, v.dwMinorVersion);

#if defined(_WIN64)
        sysinfo.arch = "x86_64";
#else
        // IsWow64Process exists on WindowsXP SP2 or later
        if(GetProcAddress(GetModuleHandle("kernel32.dll"), "IsWow64Process")) {
            IsWow64Process(GetCurrentProcess(),&arch64);
            if(arch64) {
                sysinfo.arch = "x86_64";
            }
        }
#endif
    }else { /* v.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS */
        sysinfo.kernel = "Windows95";
        sysinfo.name = osname95(v.dwMajorVersion, v.dwMinorVersion);
    }
    sprintf(buf, "%s %s %s %s %s", sysinfo.kernel, sysinfo.release, sysinfo.name, v.szCSDVersion, sysinfo.arch);
    s = (char *)MALLOC(strlen(buf)+1);
    strcpy(s, buf);
    sysinfo.full = s;
    sysinfo.lang = get_lang();
}

#endif