/*

 * Copyright (c) 1998, 2018, 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 */

/* 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;

}

#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 *p, *encoding_variant, *old_temp, *old_ev;

    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) {

#ifdef MACOSX

        free(lc); // malloced memory

#endif

        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.

         */

        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) {

        free(temp);

        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)) {

        old_temp = temp;

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

        if (temp == NULL) {

            free(old_temp);

            free(encoding_variant);

            JNU_ThrowOutOfMemoryError(env, NULL);

            return 0;

        }

        strcpy(temp, p);

        old_ev = encoding_variant;

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

        if (encoding_variant == NULL) {

            free(old_ev);

            free(temp);

            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";

        }

#endif

#ifdef _AIX

        if (strcmp(p, "big5") == 0) {

            /* On AIX Traditional Chinese Big5 codeset is mapped to IBM-950 */

            *std_encoding = "IBM-950";

        } else if (strcmp(p, "IBM-943") == 0) {

            /*

             * On AIX, IBM-943 is mapped to IBM-943C in which symbol 'yen' and

             * 'overline' are replaced with 'backslash' and 'tilde' from ASCII

             * making first 96 code points same as ASCII.

             */

            *std_encoding = "IBM-943C";

        }

#endif

#ifdef __solaris__

        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

#ifdef MACOSX

        /*

         * For the case on MacOS X where encoding is set to US-ASCII, but we

         * don't have any encoding hints from LANG/LC_ALL/LC_CTYPE, use UTF-8

         * instead.

         *

         * The contents of ASCII files will still be read and displayed

         * correctly, but so will files containing UTF-8 characters beyond the

         * standard ASCII range.

         *

         * Specifically, this allows apps launched by double-clicking a .jar

         * file to correctly read UTF-8 files using the default encoding (see

         * 8011194).

         */

        const char* env_lang = getenv("LANG");

        const char* env_lc_all = getenv("LC_ALL");

        const char* env_lc_ctype = getenv("LC_CTYPE");

        if (strcmp(p,"US-ASCII") == 0 &&

            (env_lang == NULL || strlen(env_lang) == 0) &&

            (env_lc_all == NULL || strlen(env_lc_all) == 0) &&

            (env_lc_ctype == NULL || strlen(env_lc_ctype) == 0)) {

            *std_encoding = "UTF-8";

        }

#endif

    }

    free(temp);

    free(encoding_variant);

    return 1;

}

/* 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 */

    /* patches/service packs installed */

    sprops.patch_level = NULL;      // leave it undefined

    /* Java 2D/AWT properties */

#ifdef MACOSX

    // Always the same GraphicsEnvironment and Toolkit on Mac OS X

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

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

    // check if we're in a GUI login session and set java.awt.headless=true if not

    sprops.awt_headless = isInAquaSession() ? NULL : "true";

#else

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

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

#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

        struct utsname name;

        uname(&name);

        sprops.os_name = strdup(name.sysname);

#ifdef _AIX

        {

            char *os_version = malloc(strlen(name.version) +

                                      strlen(name.release) + 2);

            if (os_version != NULL) {

                strcpy(os_version, name.version);

                strcat(os_version, ".");

                strcat(os_version, name.release);

            }

            sprops.os_version = os_version;

        }

#else

        sprops.os_version = strdup(name.release);

#endif /* _AIX   */

#endif /* MACOSX */

        sprops.os_arch = ARCHPROPNAME;

        if (getenv("GNOME_DESKTOP_SESSION_ID") != NULL) {

            sprops.desktop = "gnome";

        }

        else {

            sprops.desktop = NULL;

        }

    }

    /* ABI property (optional) */

#ifdef JDK_ARCH_ABI_PROP_NAME

    sprops.sun_arch_abi = JDK_ARCH_ABI_PROP_NAME;

#endif

    /* Determine the language, country, variant, and encoding from the host,

     * and store these in the user.language, user.country, user.variant and

     * file.encoding system properties. */

    setlocale(LC_ALL, "");

    if (ParseLocale(env, LC_CTYPE,

                    &(sprops.format_language),

                    &(sprops.format_script),

                    &(sprops.format_country),

                    &(sprops.format_variant),

                    &(sprops.encoding))) {

        ParseLocale(env, LC_MESSAGES,

                    &(sprops.display_language),

                    &(sprops.display_script),

                    &(sprops.display_country),

                    &(sprops.display_variant),

                    NULL);

    } else {

        sprops.display_language = "en";

        sprops.encoding = "ISO8859-1";

    }

    /* ParseLocale failed with OOME */

    JNU_CHECK_EXCEPTION_RETURN(env, NULL);

#ifdef MACOSX