/*

 * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

#if defined(__linux__) || defined(_ALLBSD_SOURCE)

#include <stdio.h>

#include <ctype.h>

#endif

#include <pwd.h>

#include <locale.h>

#ifndef ARCHPROPNAME

#error "The macro ARCHPROPNAME has not been defined"

#endif

#include <sys/utsname.h>        /* For os_name and os_version */

#include <langinfo.h>           /* For nl_langinfo */

#include <stdlib.h>

#include <string.h>

#include <sys/types.h>

#include <unistd.h>

#include <sys/param.h>

#include <time.h>

#include <errno.h>

#ifdef MACOSX

#include "java_props_macosx.h"

#endif

#if defined(_ALLBSD_SOURCE)

#if !defined(P_tmpdir)

#include <paths.h>

#define P_tmpdir _PATH_VARTMP

#endif

#endif

#include "locale_str.h"

#include "java_props.h"

#if !defined(_ALLBSD_SOURCE)

#ifdef __linux__

  #ifndef CODESET

  #define CODESET _NL_CTYPE_CODESET_NAME

  #endif

#else

#ifdef ALT_CODESET_KEY

#define CODESET ALT_CODESET_KEY

#endif

#endif

#endif /* !_ALLBSD_SOURCE */

#ifdef JAVASE_EMBEDDED

#include <dlfcn.h>

#include <sys/stat.h>

#endif

/* Take an array of string pairs (map of key->value) and a string (key).

 * Examine each pair in the map to see if the first string (key) matches the

 * string.  If so, store the second string of the pair (value) in the value and

 * return 1.  Otherwise do nothing and return 0.  The end of the map is

 * indicated by an empty string at the start of a pair (key of "").

 */

static int

mapLookup(char* map[], const char* key, char** value) {

    int i;

    for (i = 0; strcmp(map[i], ""); i += 2){

        if (!strcmp(key, map[i])){

            *value = map[i + 1];

            return 1;

        }

    }

    return 0;

}

/* This function sets an environment variable using envstring.

 * The format of envstring is "name=value".

 * If the name has already existed, it will append value to the name.

 */

static void

setPathEnvironment(char *envstring)

{

    char name[20], *value, *current;

    value = strchr(envstring, '='); /* locate name and value separator */

    if (! value)

        return; /* not a valid environment setting */

    /* copy first part as environment name */

    strncpy(name, envstring, value - envstring);

    name[value-envstring] = '\0';

    value++; /* set value point to value of the envstring */

    current = getenv(name);

    if (current) {

        if (! strstr(current, value)) {

            /* value is not found in current environment, append it */

            char *temp = malloc(strlen(envstring) + strlen(current) + 2);

        strcpy(temp, name);

        strcat(temp, "=");

        strcat(temp, current);

        strcat(temp, ":");

        strcat(temp, value);

        putenv(temp);

        }

        /* else the value has already been set, do nothing */

    }

    else {

        /* environment variable is not found */

        putenv(envstring);

    }

}

#ifndef P_tmpdir

#define P_tmpdir "/var/tmp"

#endif

static int ParseLocale(JNIEnv* env, int cat, char ** std_language, char ** std_script,

                       char ** std_country, char ** std_variant, char ** std_encoding) {

    char *temp = NULL;

    char *language = NULL, *country = NULL, *variant = NULL,

         *encoding = NULL;

    char *lc;

    /* Query the locale set for the category */

#ifdef MACOSX

    lc = setupMacOSXLocale(cat); // malloc'd memory, need to free

#else

    lc = setlocale(cat, NULL);

#endif

#ifndef __linux__

    if (lc == NULL) {

        return 0;

    }

    temp = malloc(strlen(lc) + 1);

    if (temp == NULL) {

        JNU_ThrowOutOfMemoryError(env, NULL);

        return 0;

    }

    if (cat == LC_CTYPE) {

        /*

         * Workaround for Solaris bug 4201684: Xlib doesn't like @euro

         * locales. Since we don't depend on the libc @euro behavior,

         * we just remove the qualifier.

         * On Linux, the bug doesn't occur; on the other hand, @euro

         * is needed there because it's a shortcut that also determines

         * the encoding - without it, we wouldn't get ISO-8859-15.

         * Therefore, this code section is Solaris-specific.

         */

        lc = strdup(lc);    /* keep a copy, setlocale trashes original. */

        strcpy(temp, lc);

        p = strstr(temp, "@euro");

        if (p != NULL) {

            *p = '\0';

            setlocale(LC_ALL, temp);

        }

    }

#else

    if (lc == NULL || !strcmp(lc, "C") || !strcmp(lc, "POSIX")) {

        lc = "en_US";

    }

    temp = malloc(strlen(lc) + 1);

    if (temp == NULL) {

        JNU_ThrowOutOfMemoryError(env, NULL);

        return 0;

    }

#endif

    /*

     * locale string format in Solaris is

     * <language name>_<country name>.<encoding name>@<variant name>

     * <country name>, <encoding name>, and <variant name> are optional.

     */

    strcpy(temp, lc);

#ifdef MACOSX

    free(lc); // malloced memory

#endif

    /* Parse the language, country, encoding, and variant from the

     * locale.  Any of the elements may be missing, but they must occur

     * in the order language_country.encoding@variant, and must be

     * preceded by their delimiter (except for language).

     *

     * If the locale name (without .encoding@variant, if any) matches

     * any of the names in the locale_aliases list, map it to the

     * corresponding full locale name.  Most of the entries in the

     * locale_aliases list are locales that include a language name but

     * no country name, and this facility is used to map each language

     * to a default country if that's possible.  It's also used to map

     * the Solaris locale aliases to their proper Java locale IDs.

     */

    encoding_variant = malloc(strlen(temp)+1);

    if (encoding_variant == NULL) {

        JNU_ThrowOutOfMemoryError(env, NULL);

        return 0;

    }

    if ((p = strchr(temp, '.')) != NULL) {

        strcpy(encoding_variant, p); /* Copy the leading '.' */

        *p = '\0';

    } else if ((p = strchr(temp, '@')) != NULL) {

        strcpy(encoding_variant, p); /* Copy the leading '@' */

        *p = '\0';

    } else {

        *encoding_variant = '\0';

    }

    if (mapLookup(locale_aliases, temp, &p)) {

        temp = realloc(temp, strlen(p)+1);

        if (temp == NULL) {

            JNU_ThrowOutOfMemoryError(env, NULL);

            return 0;

        }

        strcpy(temp, p);

        encoding_variant = realloc(encoding_variant, strlen(temp)+1);

        if (encoding_variant == NULL) {

            JNU_ThrowOutOfMemoryError(env, NULL);

            return 0;

        }

        // check the "encoding_variant" again, if any.

        if ((p = strchr(temp, '.')) != NULL) {

            strcpy(encoding_variant, p); /* Copy the leading '.' */

            *p = '\0';

        } else if ((p = strchr(temp, '@')) != NULL) {

            strcpy(encoding_variant, p); /* Copy the leading '@' */

            *p = '\0';

        }

    }

    language = temp;

    if ((country = strchr(temp, '_')) != NULL) {

        *country++ = '\0';

    }

    p = encoding_variant;

    if ((encoding = strchr(p, '.')) != NULL) {

        p[encoding++ - p] = '\0';

        p = encoding;

    }

    if ((variant = strchr(p, '@')) != NULL) {

        p[variant++ - p] = '\0';

    }

    /* Normalize the language name */

    if (std_language != NULL) {

        *std_language = "en";

        if (language != NULL && mapLookup(language_names, language, std_language) == 0) {

            *std_language = malloc(strlen(language)+1);

            strcpy(*std_language, language);

        }

    }

    /* Normalize the country name */

    if (std_country != NULL && country != NULL) {

        if (mapLookup(country_names, country, std_country) == 0) {

            *std_country = malloc(strlen(country)+1);

            strcpy(*std_country, country);

        }

    }

    /* Normalize the script and variant name.  Note that we only use

     * variants listed in the mapping array; others are ignored.

     */

    if (variant != NULL) {

        if (std_script != NULL) {

            mapLookup(script_names, variant, std_script);

        }

        if (std_variant != NULL) {

            mapLookup(variant_names, variant, std_variant);

        }

    }

    /* Normalize the encoding name.  Note that we IGNORE the string

     * 'encoding' extracted from the locale name above.  Instead, we use the

     * more reliable method of calling nl_langinfo(CODESET).  This function

     * returns an empty string if no encoding is set for the given locale

     * (e.g., the C or POSIX locales); we use the default ISO 8859-1

     * converter for such locales.

     */

    if (std_encoding != NULL) {

        /* OK, not so reliable - nl_langinfo() gives wrong answers on

         * Euro locales, in particular. */

        if (strcmp(p, "ISO8859-15") == 0)

            p = "ISO8859-15";

        else

            p = nl_langinfo(CODESET);

        /* Convert the bare "646" used on Solaris to a proper IANA name */

        if (strcmp(p, "646") == 0)

            p = "ISO646-US";

        /* return same result nl_langinfo would return for en_UK,

         * in order to use optimizations. */

        *std_encoding = (*p != '\0') ? p : "ISO8859-1";

#ifdef __linux__

        /*

         * Remap the encoding string to a different value for japanese

         * locales on linux so that customized converters are used instead

         * of the default converter for "EUC-JP". The customized converters

         * omit support for the JIS0212 encoding which is not supported by

         * the variant of "EUC-JP" encoding used on linux

         */

        if (strcmp(p, "EUC-JP") == 0) {

            *std_encoding = "EUC-JP-LINUX";

        }

#else

        if (strcmp(p,"eucJP") == 0) {

            /* For Solaris use customized vendor defined character

             * customized EUC-JP converter

             */

            *std_encoding = "eucJP-open";

        } else if (strcmp(p, "Big5") == 0 || strcmp(p, "BIG5") == 0) {

            /*

             * Remap the encoding string to Big5_Solaris which augments

             * the default converter for Solaris Big5 locales to include

             * seven additional ideographic characters beyond those included

             * in the Java "Big5" converter.

             */

            *std_encoding = "Big5_Solaris";

        } else if (strcmp(p, "Big5-HKSCS") == 0) {

            /*

             * Solaris uses HKSCS2001

             */

            *std_encoding = "Big5-HKSCS-2001";

        }

#endif

    }

    free(temp);

    free(encoding_variant);

    return 1;

}

#ifdef JAVASE_EMBEDDED

/* Determine the default embedded toolkit based on whether libawt_xawt

 * exists in the JRE. This can still be overridden by -Dawt.toolkit=XXX

 */

static char* getEmbeddedToolkit() {

    Dl_info dlinfo;

    char buf[MAXPATHLEN];

    int32_t len;

    char *p;

    struct stat statbuf;

    /* Get address of this library and the directory containing it. */

    dladdr((void *)getEmbeddedToolkit, &dlinfo);

    realpath((char *)dlinfo.dli_fname, buf);

    len = strlen(buf);

    p = strrchr(buf, '/');

    /* Default AWT Toolkit on Linux and Solaris is XAWT (libawt_xawt.so). */

    strncpy(p, "/libawt_xawt.so", MAXPATHLEN-len-1);

    /* Check if it exists */

    if (stat(buf, &statbuf) == -1 && errno == ENOENT) {

        /* No - this is a reduced-headless-jre so use special HToolkit */

        return "sun.awt.HToolkit";

    }

    else {

        /* Yes - this is a headful JRE so fallback to SE defaults */

        return NULL;

    }

}

#endif

/* This function gets called very early, before VM_CALLS are setup.

 * Do not use any of the VM_CALLS entries!!!

 */

java_props_t *

GetJavaProperties(JNIEnv *env)

{

    static java_props_t sprops;

    char *v; /* tmp var */

    if (sprops.user_dir) {

        return &sprops;

    }

    /* tmp dir */

    sprops.tmp_dir = P_tmpdir;

#ifdef MACOSX

    /* darwin has a per-user temp dir */

    static char tmp_path[PATH_MAX];

    int pathSize = confstr(_CS_DARWIN_USER_TEMP_DIR, tmp_path, PATH_MAX);

    if (pathSize > 0 && pathSize <= PATH_MAX) {

        sprops.tmp_dir = tmp_path;

    }

#endif /* MACOSX */

    /* Printing properties */

#ifdef MACOSX

    sprops.printerJob = "sun.lwawt.macosx.CPrinterJob";

#else

    sprops.printerJob = "sun.print.PSPrinterJob";

#endif

    /* patches/service packs installed */

    sprops.patch_level = "unknown";

    /* Java 2D properties */

#ifdef MACOSX

    PreferredToolkit prefToolkit = getPreferredToolkit();

    switch (prefToolkit) {

        case CToolkit:

        case HToolkit:

            sprops.graphics_env = "sun.awt.CGraphicsEnvironment";

            break;

        case XToolkit:

#endif

    sprops.graphics_env = "sun.awt.X11GraphicsEnvironment";

#ifdef MACOSX

            break;

    }

#endif

    /* AWT properties */

#ifdef JAVASE_EMBEDDED

    sprops.awt_toolkit = getEmbeddedToolkit();

    if (sprops.awt_toolkit == NULL) // default as below

#endif

#ifdef MACOSX

        switch (prefToolkit) {

            case CToolkit:

                sprops.awt_toolkit = "sun.lwawt.macosx.LWCToolkit";

                break;

            case XToolkit:

#endif

    sprops.awt_toolkit = "sun.awt.X11.XToolkit";

#ifdef MACOSX

                break;

            default:

                sprops.awt_toolkit = "sun.awt.HToolkit";

                break;

        }

#endif

    /* This is used only for debugging of font problems. */

    v = getenv("JAVA2D_FONTPATH");

    sprops.font_dir = v ? v : NULL;

#ifdef SI_ISALIST

    /* supported instruction sets */

    {

        char list[258];

        sysinfo(SI_ISALIST, list, sizeof(list));

        sprops.cpu_isalist = strdup(list);

    }

#else

    sprops.cpu_isalist = NULL;

#endif

    /* endianness of platform */

    {

        unsigned int endianTest = 0xff000000;

        if (((char*)(&endianTest))[0] != 0)

            sprops.cpu_endian = "big";

        else

            sprops.cpu_endian = "little";

    }

    /* os properties */

    {

#ifdef MACOSX

        setOSNameAndVersion(&sprops);

#else