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Tomcat example source code file (registry.c)

This example Tomcat source code file (registry.c) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Tomcat tags/keywords

dword, dword, j2p, j2w, j2w, long, null, null, registry, registry, tcn_alloc_wstring, tcn_free_wstring, tcn_implement_call, unreferenced

The Tomcat registry.c source code

/* Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

/*
 *
 * @author Mladen Turk
 * @version $Revision: 466585 $, $Date: 2006-10-22 00:16:34 +0200 (dim., 22 oct. 2006) $
 */

#ifndef _WIN32_WINNT
#define _WIN32_WINNT 0x0500
#endif
#include <winsock2.h>
#include <mswsock.h>
#include <ws2tcpip.h>
#include <shlwapi.h>

#include "apr.h"
#include "apr_pools.h"
#include "apr_arch_misc.h"   /* for apr_os_level */
#include "apr_arch_atime.h"  /* for FileTimeToAprTime */

#include "tcn.h"

#define SAFE_CLOSE_KEY(k)                               \
    if ((k) != NULL && (k) != INVALID_HANDLE_VALUE) {   \
        RegCloseKey((k));                               \
        (k) = NULL;                                     \
    }

typedef struct {
    apr_pool_t     *pool;
    HKEY           root;
    HKEY           key;
} tcn_nt_registry_t;


#define TCN_HKEY_CLASSES_ROOT       1
#define TCN_HKEY_CURRENT_CONFIG     2
#define TCN_HKEY_CURRENT_USER       3
#define TCN_HKEY_LOCAL_MACHINE      4
#define TCN_HKEY_USERS              5

static const struct {
    HKEY k;
} TCN_KEYS[] = {
    INVALID_HANDLE_VALUE,
    HKEY_CLASSES_ROOT,
    HKEY_CURRENT_CONFIG,
    HKEY_CURRENT_USER,
    HKEY_LOCAL_MACHINE,
    HKEY_USERS,
    INVALID_HANDLE_VALUE
};

#define TCN_KEY_ALL_ACCESS          0x0001
#define TCN_KEY_CREATE_LINK         0x0002
#define TCN_KEY_CREATE_SUB_KEY      0x0004
#define TCN_KEY_ENUMERATE_SUB_KEYS  0x0008
#define TCN_KEY_EXECUTE             0x0010
#define TCN_KEY_NOTIFY              0x0020
#define TCN_KEY_QUERY_VALUE         0x0040
#define TCN_KEY_READ                0x0080
#define TCN_KEY_SET_VALUE           0x0100
#define TCN_KEY_WOW64_64KEY         0x0200
#define TCN_KEY_WOW64_32KEY         0x0400
#define TCN_KEY_WRITE               0x0800

#define TCN_REGSAM(s, x)                    \
        s = 0;                              \
        if (x & TCN_KEY_ALL_ACCESS)         \
            s |= KEY_ALL_ACCESS;            \
        if (x & TCN_KEY_CREATE_LINK)        \
            s |= KEY_CREATE_LINK;           \
        if (x & TCN_KEY_CREATE_SUB_KEY)     \
            s |= KEY_CREATE_SUB_KEY;        \
        if (x & TCN_KEY_ENUMERATE_SUB_KEYS) \
            s |= KEY_ENUMERATE_SUB_KEYS;    \
        if (x & TCN_KEY_EXECUTE)            \
            s |= KEY_EXECUTE;               \
        if (x & TCN_KEY_NOTIFY)             \
            s |= KEY_NOTIFY;                \
        if (x & TCN_KEY_READ)               \
            s |= KEY_READ;                  \
        if (x & TCN_KEY_SET_VALUE)          \
            s |= KEY_SET_VALUE;             \
        if (x & TCN_KEY_WOW64_64KEY)        \
            s |= KEY_WOW64_64KEY;           \
        if (x & TCN_KEY_WOW64_32KEY)        \
            s |= KEY_WOW64_32KEY;           \
        if (x & TCN_KEY_WRITE)              \
            s |= KEY_WRITE

#define TCN_REG_BINARY              1
#define TCN_REG_DWORD               2
#define TCN_REG_EXPAND_SZ           3
#define TCN_REG_MULTI_SZ            4
#define TCN_REG_QWORD               5
#define TCN_REG_SZ                  6

static const struct {
    DWORD t;
} TCN_REGTYPES[] = {
    REG_NONE,
    REG_BINARY,
    REG_DWORD,
    REG_EXPAND_SZ,
    REG_MULTI_SZ,
    REG_QWORD,
    REG_SZ,
    REG_NONE
};

static apr_status_t registry_cleanup(void *data)
{
    tcn_nt_registry_t *reg = (tcn_nt_registry_t *)data;

    if (reg) {
        SAFE_CLOSE_KEY(reg->key);
    }
    return APR_SUCCESS;
}

TCN_IMPLEMENT_CALL(jlong, Registry, create)(TCN_STDARGS, jint root, jstring name,
                                            jint sam, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    tcn_nt_registry_t *reg = NULL;
    TCN_ALLOC_WSTRING(name);
    HKEY key;
    LONG rc;
    REGSAM s;

    UNREFERENCED(o);
    TCN_ASSERT(pool != 0);

    if (root < TCN_HKEY_CLASSES_ROOT || root > TCN_HKEY_USERS) {
        tcn_ThrowException(e, "Invalid Registry Root Key");
        goto cleanup;
    }
    if (sam < TCN_KEY_ALL_ACCESS || root > TCN_KEY_WRITE) {
        tcn_ThrowException(e, "Invalid Registry Key Security");
        goto cleanup;
    }
    reg = (tcn_nt_registry_t *)apr_palloc(p, sizeof(tcn_nt_registry_t));
    reg->pool = p;
    reg->root = TCN_KEYS[root].k;
    reg->key  = NULL;
    TCN_INIT_WSTRING(name);
    TCN_REGSAM(s, sam);
    rc = RegCreateKeyExW(reg->root, J2W(name), 0, NULL, REG_OPTION_NON_VOLATILE,
                         s, NULL, &key, NULL);
    if (rc !=  ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    reg->key = key;
    apr_pool_cleanup_register(p, (const void *)reg,
                              registry_cleanup,
                              apr_pool_cleanup_null);

cleanup:
    TCN_FREE_WSTRING(name);
    return P2J(reg);
}

TCN_IMPLEMENT_CALL(jlong, Registry, open)(TCN_STDARGS, jint root, jstring name,
                                          jint sam, jlong pool)
{
    apr_pool_t *p = J2P(pool, apr_pool_t *);
    tcn_nt_registry_t *reg = NULL;
    TCN_ALLOC_WSTRING(name);
    HKEY key;
    LONG rc;
    REGSAM s;

    UNREFERENCED(o);
    TCN_ASSERT(pool != 0);

    if (root < TCN_HKEY_CLASSES_ROOT || root > TCN_HKEY_USERS) {
        tcn_ThrowException(e, "Invalid Registry Root Key");
        goto cleanup;
    }
    if (sam < TCN_KEY_ALL_ACCESS || root > TCN_KEY_WRITE) {
        tcn_ThrowException(e, "Invalid Registry Key Security");
        goto cleanup;
    }
    reg = (tcn_nt_registry_t *)apr_palloc(p, sizeof(tcn_nt_registry_t));
    reg->pool = p;
    reg->root = TCN_KEYS[root].k;
    reg->key  = NULL;
    TCN_INIT_WSTRING(name);
    TCN_REGSAM(s, sam);
    rc = RegOpenKeyExW(reg->root, J2W(name), 0, s, &key);
    if (rc !=  ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    reg->key = key;
    apr_pool_cleanup_register(p, (const void *)reg,
                              registry_cleanup,
                              apr_pool_cleanup_null);

cleanup:
    TCN_FREE_WSTRING(name);
    return P2J(reg);
}

TCN_IMPLEMENT_CALL(jint, Registry, close)(TCN_STDARGS, jlong reg)
{
    tcn_nt_registry_t *r = J2P(reg, tcn_nt_registry_t *);
    UNREFERENCED_STDARGS;

    TCN_ASSERT(reg != 0);

    registry_cleanup(r);
    apr_pool_cleanup_kill(r->pool, r, registry_cleanup);
    return APR_SUCCESS;
}

TCN_IMPLEMENT_CALL(jint, Registry, getType)(TCN_STDARGS, jlong key,
                                            jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD v;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &v, NULL, NULL);
    if (rc != ERROR_SUCCESS)
        v = -rc;
    TCN_FREE_WSTRING(name);
    switch (v) {
        case REG_BINARY:
            v = TCN_REG_BINARY;
            break;
        case REG_DWORD:
            v = TCN_REG_DWORD;
            break;
        case REG_EXPAND_SZ:
            v = TCN_REG_EXPAND_SZ;
            break;
        case REG_MULTI_SZ:
            v = TCN_REG_MULTI_SZ;
            break;
        case REG_QWORD:
            v = TCN_REG_QWORD;
            break;
        case REG_SZ:
            v = TCN_REG_SZ;
            break;
        case REG_DWORD_BIG_ENDIAN:
            v = 0;
            break;
    }
    return v;
}

TCN_IMPLEMENT_CALL(jint, Registry, getSize)(TCN_STDARGS, jlong key,
                                            jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD v;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, NULL, &v);
    if (rc != ERROR_SUCCESS)
        v = -rc;
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jint, Registry, getValueI)(TCN_STDARGS, jlong key,
                                              jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD t, l;
    DWORD v = 0;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &t, NULL, &l);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    if (t == REG_DWORD) {
        l = sizeof(DWORD);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, (LPBYTE)&v, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            goto cleanup;
        }
    }
    else if (t == REG_SZ || t == REG_BINARY ||
             t == REG_MULTI_SZ || t == REG_EXPAND_SZ)
        v = l;
    else {
        v = 0;
        tcn_ThrowException(e, "Unable to convert the value to integer");
    }
cleanup:
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jlong, Registry, getValueJ)(TCN_STDARGS, jlong key,
                                               jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD t, l;
    UINT64 v = 0;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &t, NULL, &l);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    if (t == REG_DWORD) {
        DWORD tv;
        l = sizeof(DWORD);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, (LPBYTE)&tv, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            goto cleanup;
        }
        v = tv;
    }
    else if (t == REG_QWORD) {
        l = sizeof(UINT64);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, (LPBYTE)&v, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            goto cleanup;
        }
    }
    else if (t == REG_SZ || t == REG_BINARY ||
             t == REG_MULTI_SZ || t == REG_EXPAND_SZ)
        v = l;
    else {
        v = 0;
        tcn_ThrowException(e, "Unable to convert the value to long");
    }
cleanup:
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jstring, Registry, getValueS)(TCN_STDARGS, jlong key,
                                                 jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD t, l;
    jstring v = NULL;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &t, NULL, &l);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    if (t == REG_SZ || t == REG_EXPAND_SZ) {
        jchar *vw = (jchar *)malloc(l);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, (LPBYTE)vw, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            free(vw);
            goto cleanup;
        }
        v = (*e)->NewString((e), vw, wcslen(vw));
        free(vw);
    }
cleanup:
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jbyteArray, Registry, getValueB)(TCN_STDARGS, jlong key,
                                                    jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD t, l;
    jbyteArray v = NULL;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &t, NULL, &l);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    if (t == REG_BINARY) {
        BYTE *b = (BYTE *)malloc(l);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, b, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            free(b);
            goto cleanup;
        }
        v = tcn_new_arrayb(e, b, l);
        free(b);
    }
cleanup:
    TCN_FREE_WSTRING(name);
    return v;
}

static jsize get_multi_sz_count(LPCWSTR str)
{
    LPCWSTR p = str;
    jsize   cnt = 0;
    for ( ; p && *p; p++) {
        cnt++;
        while (*p)
            p++;
    }
    return cnt;
}

TCN_IMPLEMENT_CALL(jobjectArray, Registry, getValueA)(TCN_STDARGS, jlong key,
                                                      jstring name)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD t, l;
    jobjectArray v = NULL;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegQueryValueExW(k->key, J2W(name), NULL, &t, NULL, &l);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    if (t == REG_MULTI_SZ) {
        jsize cnt = 0;
        jchar *p;
        jchar *vw = (jchar *)malloc(l);
        rc = RegQueryValueExW(k->key, J2W(name), NULL, NULL, (LPBYTE)vw, &l);
        if (rc != ERROR_SUCCESS) {
            tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
            free(vw);
            goto cleanup;
        }
        cnt = get_multi_sz_count(vw);
        if (cnt) {
            jsize idx = 0;
            v = tcn_new_arrays(e, cnt);
            for (p = vw ; p && *p; p++) {
                jstring s;
                jchar *b = p;
                while (*p)
                    p++;
                s = (*e)->NewString((e), b, (jsize)(p - b));
                (*e)->SetObjectArrayElement((e), v, idx++, s);
            }
        }
        free(vw);
    }
cleanup:
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueI)(TCN_STDARGS, jlong key,
                                              jstring name, jint val)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    DWORD v = (DWORD)val;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegSetValueExW(k->key, J2W(name), 0, REG_DWORD, (CONST BYTE *)&v, sizeof(DWORD));
    TCN_FREE_WSTRING(name);
    return v;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueJ)(TCN_STDARGS, jlong key,
                                              jstring name, jlong val)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    UINT64 v = (UINT64)val;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    rc = RegSetValueExW(k->key, J2W(name), 0, REG_QWORD, (CONST BYTE *)&v, sizeof(UINT64));
    TCN_FREE_WSTRING(name);
    return rc;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueS)(TCN_STDARGS, jlong key,
                                              jstring name, jstring val)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    TCN_ALLOC_WSTRING(val);
    LONG rc;
    DWORD len;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    TCN_INIT_WSTRING(val);
    len = wcslen(J2W(val));
    rc = RegSetValueExW(k->key, J2W(name), 0, REG_SZ,
                        (CONST BYTE *)J2W(val), (len + 1) * 2);
    TCN_FREE_WSTRING(name);
    TCN_FREE_WSTRING(val);
    return rc;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueE)(TCN_STDARGS, jlong key,
                                              jstring name, jstring val)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    TCN_ALLOC_WSTRING(val);
    LONG rc;
    DWORD len;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    TCN_INIT_WSTRING(val);
    len = wcslen(J2W(val));
    rc = RegSetValueExW(k->key, J2W(name), 0, REG_EXPAND_SZ,
                        (CONST BYTE *)J2W(val), (len + 1) * 2);
    TCN_FREE_WSTRING(name);
    TCN_FREE_WSTRING(val);
    return rc;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueA)(TCN_STDARGS, jlong key,
                                              jstring name,
                                              jobjectArray vals)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    LONG rc;
    jsize i, len;
    jsize sl = 0;
    jchar *msz, *p;
    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    TCN_INIT_WSTRING(name);
    len = (*e)->GetArrayLength((e), vals);
    for (i = 0; i < len; i++) {
        jstring s = (jstring)(*e)->GetObjectArrayElement((e), vals, i);
        sl += (*e)->GetStringLength((e), s) + 1;
    }
    sl = (sl + 1) * 2;
    p = msz = (jchar *)calloc(1, sl);
    for (i = 0; i < len; i++) {
        jsize   l;
        jstring s = (jstring)(*e)->GetObjectArrayElement((e), vals, i);
        l = (*e)->GetStringLength((e), s);
        wcsncpy(p, (*e)->GetStringChars(e, s, 0), l);
        p += l + 1;
    }
    rc = RegSetValueExW(k->key, J2W(name), 0, REG_MULTI_SZ,
                        (CONST BYTE *)msz, sl);
    TCN_FREE_WSTRING(name);
    free(msz);
    return rc;
}

TCN_IMPLEMENT_CALL(jint, Registry, setValueB)(TCN_STDARGS, jlong key,
                                              jstring name,
                                              jbyteArray val)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    TCN_ALLOC_WSTRING(name);
    jsize nbytes = (*e)->GetArrayLength(e, val);
    jbyte *bytes = (*e)->GetByteArrayElements(e, val, NULL);
    LONG rc;

    rc = RegSetValueExW(k->key, J2W(name), 0, REG_BINARY,
                        bytes, (DWORD)nbytes);
    (*e)->ReleaseByteArrayElements(e, val, bytes, JNI_ABORT);
    TCN_FREE_WSTRING(name);
    return rc;
}

#define MAX_VALUE_NAME 4096

TCN_IMPLEMENT_CALL(jobjectArray, Registry, enumKeys)(TCN_STDARGS, jlong key)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    LONG rc;
    jobjectArray v = NULL;
    jsize cnt = 0;

    WCHAR    achKey[MAX_PATH];
    WCHAR    achClass[MAX_PATH] = L"";
    DWORD    cchClassName = MAX_PATH;
    DWORD    cSubKeys;
    DWORD    cbMaxSubKey;
    DWORD    cchMaxClass;
    DWORD    cValues;
    DWORD    cchMaxValue;
    DWORD    cbMaxValueData;
    DWORD    cbSecurityDescriptor;
    FILETIME ftLastWriteTime;

    DWORD cchValue = MAX_VALUE_NAME;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    rc = RegQueryInfoKeyW(k->key,
                          achClass,
                          &cchClassName,
                          NULL,
                          &cSubKeys,
                          &cbMaxSubKey,
                          &cchMaxClass,
                          &cValues,
                          &cchMaxValue,
                          &cbMaxValueData,
                          &cbSecurityDescriptor,
                          &ftLastWriteTime);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    cnt = cSubKeys;
    if (cnt) {
        jsize idx = 0;
        v = tcn_new_arrays(e, cnt);
        for (idx = 0; idx < cnt; idx++) {
            jstring s;
            DWORD achKeyLen = MAX_PATH;
            rc = RegEnumKeyExW(k->key,
                               idx,
                               achKey,
                               &achKeyLen,
                               NULL,
                               NULL,
                               NULL,
                               &ftLastWriteTime);
            if (rc == (DWORD)ERROR_SUCCESS) {
                s = (*e)->NewString((e), achKey, wcslen(achKey));
                (*e)->SetObjectArrayElement((e), v, idx, s);
            }
        }
    }
cleanup:
    return v;
}

TCN_IMPLEMENT_CALL(jobjectArray, Registry, enumValues)(TCN_STDARGS, jlong key)
{
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);
    LONG rc;
    jobjectArray v = NULL;
    jsize cnt = 0;

    WCHAR    achClass[MAX_PATH] = L"";
    DWORD    cchClassName = MAX_PATH;
    DWORD    cSubKeys;
    DWORD    cbMaxSubKey;
    DWORD    cchMaxClass;
    DWORD    cValues;
    DWORD    cchMaxValue;
    DWORD    cbMaxValueData;
    DWORD    cbSecurityDescriptor;
    FILETIME ftLastWriteTime;

    WCHAR  achValue[MAX_VALUE_NAME];
    DWORD  cchValue = MAX_VALUE_NAME;

    UNREFERENCED(o);
    TCN_ASSERT(key != 0);
    /* Get the class name and the value count. */
    rc = RegQueryInfoKeyW(k->key,
                          achClass,
                          &cchClassName,
                          NULL,
                          &cSubKeys,
                          &cbMaxSubKey,
                          &cchMaxClass,
                          &cValues,
                          &cchMaxValue,
                          &cbMaxValueData,
                          &cbSecurityDescriptor,
                          &ftLastWriteTime);
    if (rc != ERROR_SUCCESS) {
        tcn_ThrowAPRException(e, APR_FROM_OS_ERROR(rc));
        goto cleanup;
    }
    cnt = cValues;
    if (cnt) {
        jsize idx = 0;
        v = tcn_new_arrays(e, cnt);
        for (idx = 0; idx < cnt; idx++) {
            jstring s;
            cchValue = MAX_VALUE_NAME;
            achValue[0] = '\0';
            rc = RegEnumValueW(k->key, idx,
                               achValue,
                               &cchValue,
                               NULL,
                               NULL,    // &dwType,
                               NULL,    // &bData,
                               NULL);   // &bcData
            if (rc == (DWORD)ERROR_SUCCESS) {
                s = (*e)->NewString((e), achValue, wcslen(achValue));
                (*e)->SetObjectArrayElement((e), v, idx, s);
            }
        }
    }
cleanup:
    return v;
}

TCN_IMPLEMENT_CALL(jint, Registry, deleteKey)(TCN_STDARGS, jint root, jstring name,
                                              jboolean only_if_empty)
{
    DWORD rv;
    TCN_ALLOC_WSTRING(name);

    UNREFERENCED(o);
    if (root < TCN_HKEY_CLASSES_ROOT || root > TCN_HKEY_USERS) {
        rv = EBADF;
        goto cleanup;
    }
    if (only_if_empty)
        rv = SHDeleteEmptyKeyW(TCN_KEYS[root].k, J2W(name));
    else
        rv = SHDeleteKeyW(TCN_KEYS[root].k, J2W(name));
cleanup:
    TCN_FREE_WSTRING(name);
    return rv;
}

TCN_IMPLEMENT_CALL(jint, Registry, deleteValue)(TCN_STDARGS, jlong key,
                                                jstring name)
{
    LONG rv;
    TCN_ALLOC_WSTRING(name);
    tcn_nt_registry_t *k = J2P(key, tcn_nt_registry_t *);

    UNREFERENCED(o);
    rv = RegDeleteValueW(k->key, J2W(name));
    TCN_FREE_WSTRING(name);
    return (jint)rv;
}

Other Tomcat examples (source code examples)

Here is a short list of links related to this Tomcat registry.c source code file:

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