/*
 * Unit test suite for userenv functions
 *
 * Copyright 2008 Google (Lei Zhang)
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>

#include "windef.h"
#include "winbase.h"
#include "winnls.h"

#include "userenv.h"

#include "wine/test.h"

#define expect(EXPECTED,GOT) ok((GOT)==(EXPECTED), "Expected %d, got %d\n", (EXPECTED), (GOT))
#define expect_env(EXPECTED,GOT,VAR) ok((GOT)==(EXPECTED), "Expected %d, got %d for %s (%d)\n", (EXPECTED), (GOT), (VAR), j)

struct profile_item
{
    const char * name;
    const int todo[4];
};

/* Debugging functions from wine/libs/wine/debug.c, slightly modified */

/* allocate some tmp string space */
/* FIXME: this is not 100% thread-safe */
static char *get_tmp_space( int size )
{
    static char *list[32];
    static long pos;
    char *ret;
    int idx;

    idx = ++pos % (sizeof(list)/sizeof(list[0]));
    if ((ret = realloc( list[idx], size ))) list[idx] = ret;
    return ret;
}

/* default implementation of wine_dbgstr_wn */
static const char *default_dbgstr_wn( const WCHAR *str, int n, BOOL quotes )
{
    char *dst, *res;

    if (!HIWORD(str))
    {
        if (!str) return "(null)";
        res = get_tmp_space( 6 );
        sprintf( res, "#%04x", LOWORD(str) );
        return res;
    }
    if (n == -1) n = lstrlenW(str);
    if (n < 0) n = 0;
    else if (n > 200) n = 200;
    dst = res = get_tmp_space( n * 5 + 7 );
    if (quotes)
    {
        *dst++ = 'L';
        *dst++ = '"';
    }
    while (n-- > 0)
    {
        WCHAR c = *str++;
        switch (c)
        {
        case '\n': *dst++ = '\\'; *dst++ = 'n'; break;
        case '\r': *dst++ = '\\'; *dst++ = 'r'; break;
        case '\t': *dst++ = '\\'; *dst++ = 't'; break;
        case '"':  *dst++ = '\\'; *dst++ = '"'; break;
        case '\\': *dst++ = '\\'; *dst++ = '\\'; break;
        default:
            if (c >= ' ' && c <= 126)
                *dst++ = (char)c;
            else
            {
                *dst++ = '\\';
                sprintf(dst,"%04x",c);
                dst+=4;
            }
        }
    }
    if (quotes) *dst++ = '"';
    if (*str)
    {
        *dst++ = '.';
        *dst++ = '.';
        *dst++ = '.';
    }
    *dst = 0;
    return res;
}

const char *wine_dbgstr_wn( const WCHAR *s, int n )
{
    return default_dbgstr_wn(s, n, TRUE);
}

const char *wine_dbgstr_w( const WCHAR *s )
{
    return default_dbgstr_wn( s, -1, TRUE);
}

const char *userenv_dbgstr_w( const WCHAR *s )
{
    return default_dbgstr_wn( s, -1, FALSE);
}

/* Helper function for retrieving environment variables */
static BOOL get_env(const WCHAR * env, const char * var, char ** result)
{
    const WCHAR * p = env;
    int envlen, varlen, buflen;
    char buf[256];

    if (!env || !var || !result) return FALSE;

    varlen = strlen(var);
    do
    {
        envlen = lstrlenW(p);
        sprintf(buf, "%s", userenv_dbgstr_w(p));
        if (CompareStringA(GetThreadLocale(), NORM_IGNORECASE|LOCALE_USE_CP_ACP, buf, min(envlen, varlen), var, varlen) == CSTR_EQUAL)
        {
            if (buf[varlen] == '=')
            {
                buflen = strlen(buf);
                *result = HeapAlloc(GetProcessHeap(), 0, buflen + 1);
                if (!*result) return FALSE;
                memcpy(*result, buf, buflen + 1);
                return TRUE;
            }
        }
        p = p + envlen + 1;
    } while (*p);
    return FALSE;
}

static void test_create_env(void)
{
    BOOL r;
    HANDLE htok;
    WCHAR * env[4];
    char * st;
    int i, j;

    static const struct profile_item common_vars[] = {
        { "ComSpec", { 1, 1, 0, 0 } },
        { "COMPUTERNAME", { 1, 1, 1, 1 } },
        { "NUMBER_OF_PROCESSORS", { 1, 1, 0, 0 } },
        { "OS", { 1, 1, 0, 0 } },
        { "PROCESSOR_ARCHITECTURE", { 1, 1, 0, 0 } },
        { "PROCESSOR_IDENTIFIER", { 1, 1, 0, 0 } },
        { "PROCESSOR_LEVEL", { 1, 1, 0, 0 } },
        { "PROCESSOR_REVISION", { 1, 1, 0, 0 } },
        { "SystemDrive", { 1, 1, 0, 0 } },
        { "SystemRoot", { 1, 1, 0, 0 } },
        { "windir", { 1, 1, 0, 0 } }
    };
    static const struct profile_item common_post_nt4_vars[] = {
        { "ALLUSERSPROFILE", { 1, 1, 0, 0 } },
        { "CommonProgramFiles", { 1, 1, 1, 1 } },
        { "ProgramFiles", { 1, 1, 0, 0 } }
    };
    static const struct profile_item htok_vars[] = {
        { "PATH", { 1, 1, 0, 0 } },
        { "TEMP", { 1, 1, 0, 0 } },
        { "TMP", { 1, 1, 0, 0 } },
        { "USERPROFILE", { 1, 1, 0, 0 } }
    };

    r = SetEnvironmentVariableA("WINE_XYZZY", "ZZYZX");
    expect(TRUE, r);

    if (0)
    {
        /* Crashes on NT4 */
        r = CreateEnvironmentBlock(NULL, NULL, FALSE);
        expect(FALSE, r);
    }

    r = OpenProcessToken(GetCurrentProcess(), TOKEN_QUERY|TOKEN_DUPLICATE, &htok);
    expect(TRUE, r);

    if (0)
    {
        /* Crashes on NT4 */
        r = CreateEnvironmentBlock(NULL, htok, FALSE);
        expect(FALSE, r);
    }

    r = CreateEnvironmentBlock((LPVOID) &env[0], NULL, FALSE);
    expect(TRUE, r);

    r = CreateEnvironmentBlock((LPVOID) &env[1], htok, FALSE);
    expect(TRUE, r);

    r = CreateEnvironmentBlock((LPVOID) &env[2], NULL, TRUE);
    expect(TRUE, r);

    r = CreateEnvironmentBlock((LPVOID) &env[3], htok, TRUE);
    expect(TRUE, r);

    /* Test for common environment variables (NT4 and higher) */
    for (i = 0; i < sizeof(common_vars)/sizeof(common_vars[0]); i++)
    {
        for (j = 0; j < 4; j++)
        {
            r = get_env(env[j], common_vars[i].name, &st);
            if (common_vars[i].todo[j])
                todo_wine expect_env(TRUE, r, common_vars[i].name);
            else
                expect_env(TRUE, r, common_vars[i].name);
        }
    }

    /* Test for common environment variables (post NT4) */
    if (!GetEnvironmentVariableA("ALLUSERSPROFILE", NULL, 0))
    {
        win_skip("Some environment variables are not present on NT4\n");
    }
    else
    {
        for (i = 0; i < sizeof(common_post_nt4_vars)/sizeof(common_post_nt4_vars[0]); i++)
        {
            for (j = 0; j < 4; j++)
            {
                r = get_env(env[j], common_post_nt4_vars[i].name, &st);
                if (common_post_nt4_vars[i].todo[j])
                    todo_wine expect_env(TRUE, r, common_post_nt4_vars[i].name);
                else
                    expect_env(TRUE, r, common_post_nt4_vars[i].name);
            }
        }
    }

    /* Test for environment variables with values that depends on htok */
    for (i = 0; i < sizeof(htok_vars)/sizeof(htok_vars[0]); i++)
    {
        for (j = 0; j < 4; j++)
        {
            r = get_env(env[j], htok_vars[i].name, &st);
            if (htok_vars[i].todo[j])
                todo_wine expect_env(TRUE, r, htok_vars[i].name);
            else
                expect_env(TRUE, r, htok_vars[i].name);
        }
    }

    r = get_env(env[0], "WINE_XYZZY", &st);
    expect(FALSE, r);
    r = get_env(env[1], "WINE_XYZZY", &st);
    expect(FALSE, r);
    r = get_env(env[2], "WINE_XYZZY", &st);
    expect(TRUE, r);
    r = get_env(env[3], "WINE_XYZZY", &st);
    expect(TRUE, r);
}

START_TEST(userenv)
{
    test_create_env();
}