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/* 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.
*/
#define APR_WANT_STRFUNC
#include "apr_want.h"
#include "apr.h"
#include "apr_arch_misc.h"
#include "apr_arch_utf8.h"
#include "apr_env.h"
#include "apr_errno.h"
#include "apr_pools.h"
#include "apr_strings.h"
static apr_status_t widen_envvar_name (apr_wchar_t *buffer,
apr_size_t bufflen,
const char *envvar)
{
apr_size_t inchars;
apr_status_t status;
inchars = strlen(envvar) + 1;
status = apr_conv_utf8_to_utf16(envvar, &inchars, buffer, &bufflen);
if (status == APR_INCOMPLETE)
status = APR_ENAMETOOLONG;
return status;
}
APR_DECLARE(apr_status_t) apr_env_get(char **value,
const char *envvar,
apr_pool_t *pool)
{
char *val = NULL;
DWORD size;
apr_wchar_t wenvvar[APR_PATH_MAX];
apr_size_t inchars, outchars;
apr_wchar_t *wvalue, dummy;
apr_status_t status;
status = widen_envvar_name(wenvvar, APR_PATH_MAX, envvar);
if (status)
return status;
SetLastError(0);
size = GetEnvironmentVariableW(wenvvar, &dummy, 0);
if (GetLastError() == ERROR_ENVVAR_NOT_FOUND)
/* The environment variable doesn't exist. */
return APR_ENOENT;
if (size == 0) {
/* The environment value exists, but is zero-length. */
*value = apr_pstrdup(pool, "");
return APR_SUCCESS;
}
wvalue = apr_palloc(pool, size * sizeof(*wvalue));
size = GetEnvironmentVariableW(wenvvar, wvalue, size);
inchars = wcslen(wvalue) + 1;
outchars = 3 * inchars; /* Enough for any UTF-8 representation */
val = apr_palloc(pool, outchars);
status = apr_conv_utf16_to_utf8(wvalue, &inchars, val, &outchars);
if (status)
return status;
*value = val;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_env_set(const char *envvar,
const char *value,
apr_pool_t *pool)
{
apr_wchar_t wenvvar[APR_PATH_MAX];
apr_wchar_t *wvalue;
apr_size_t inchars, outchars;
apr_status_t status;
status = widen_envvar_name(wenvvar, APR_PATH_MAX, envvar);
if (status)
return status;
outchars = inchars = strlen(value) + 1;
wvalue = apr_palloc(pool, outchars * sizeof(*wvalue));
status = apr_conv_utf8_to_utf16(value, &inchars, wvalue, &outchars);
if (status)
return status;
if (!SetEnvironmentVariableW(wenvvar, wvalue))
return apr_get_os_error();
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_env_delete(const char *envvar, apr_pool_t *pool)
{
apr_wchar_t wenvvar[APR_PATH_MAX];
apr_status_t status;
status = widen_envvar_name(wenvvar, APR_PATH_MAX, envvar);
if (status)
return status;
if (!SetEnvironmentVariableW(wenvvar, NULL))
return apr_get_os_error();
return APR_SUCCESS;
}
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