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/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
* applicable.
*
* Licensed 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.
*/
#include "apr_arch_dso.h"
#include "apr_strings.h"
#include "apr_private.h"
#include "apr_arch_file_io.h"
#include "apr_arch_utf8.h"
#if APR_HAS_DSO
APR_DECLARE(apr_status_t) apr_os_dso_handle_put(apr_dso_handle_t **aprdso,
apr_os_dso_handle_t osdso,
apr_pool_t *pool)
{
*aprdso = apr_pcalloc(pool, sizeof **aprdso);
(*aprdso)->handle = osdso;
(*aprdso)->cont = pool;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_os_dso_handle_get(apr_os_dso_handle_t *osdso,
apr_dso_handle_t *aprdso)
{
*osdso = aprdso->handle;
return APR_SUCCESS;
}
static apr_status_t dso_cleanup(void *thedso)
{
apr_dso_handle_t *dso = thedso;
if (dso->handle != NULL && !FreeLibrary(dso->handle)) {
return apr_get_os_error();
}
dso->handle = NULL;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_dso_load(struct apr_dso_handle_t **res_handle,
const char *path, apr_pool_t *ctx)
{
HINSTANCE os_handle;
apr_status_t rv;
#ifndef _WIN32_WCE
UINT em;
#endif
#if APR_HAS_UNICODE_FS
IF_WIN_OS_IS_UNICODE
{
apr_wchar_t wpath[APR_PATH_MAX];
if ((rv = utf8_to_unicode_path(wpath, sizeof(wpath)
/ sizeof(apr_wchar_t), path))
!= APR_SUCCESS) {
*res_handle = apr_pcalloc(ctx, sizeof(**res_handle));
return ((*res_handle)->load_error = rv);
}
/* Prevent ugly popups from killing our app */
#ifndef _WIN32_WCE
em = SetErrorMode(SEM_FAILCRITICALERRORS);
#endif
os_handle = LoadLibraryExW(wpath, NULL, 0);
if (!os_handle)
os_handle = LoadLibraryExW(wpath, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
if (!os_handle)
rv = apr_get_os_error();
#ifndef _WIN32_WCE
SetErrorMode(em);
#endif
}
#endif /* APR_HAS_UNICODE_FS */
#if APR_HAS_ANSI_FS
ELSE_WIN_OS_IS_ANSI
{
char fspec[APR_PATH_MAX], *p = fspec;
/* Must convert path from / to \ notation.
* Per PR2555, the LoadLibraryEx function is very picky about slashes.
* Debugging on NT 4 SP 6a reveals First Chance Exception within NTDLL.
* LoadLibrary in the MS PSDK also reveals that it -explicitly- states
* that backslashes must be used for the LoadLibrary family of calls.
*/
apr_cpystrn(fspec, path, sizeof(fspec));
while ((p = strchr(p, '/')) != NULL)
*p = '\\';
/* Prevent ugly popups from killing our app */
em = SetErrorMode(SEM_FAILCRITICALERRORS);
os_handle = LoadLibraryEx(path, NULL, LOAD_WITH_ALTERED_SEARCH_PATH);
if (!os_handle)
os_handle = LoadLibraryEx(path, NULL, 0);
if (!os_handle)
rv = apr_get_os_error();
else
rv = APR_SUCCESS;
SetErrorMode(em);
}
#endif
*res_handle = apr_pcalloc(ctx, sizeof(**res_handle));
(*res_handle)->cont = ctx;
if (rv) {
return ((*res_handle)->load_error = rv);
}
(*res_handle)->handle = (void*)os_handle;
(*res_handle)->load_error = APR_SUCCESS;
apr_pool_cleanup_register(ctx, *res_handle, dso_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_dso_unload(struct apr_dso_handle_t *handle)
{
return apr_pool_cleanup_run(handle->cont, handle, dso_cleanup);
}
APR_DECLARE(apr_status_t) apr_dso_sym(apr_dso_handle_sym_t *ressym,
struct apr_dso_handle_t *handle,
const char *symname)
{
#ifdef _WIN32_WCE
apr_size_t symlen = strlen(symname) + 1;
apr_size_t wsymlen = 256;
apr_wchar_t wsymname[256];
apr_status_t rv;
rv = apr_conv_utf8_to_ucs2(wsymname, &wsymlen, symname, &symlen);
if (rv != APR_SUCCESS) {
return rv;
}
else if (symlen) {
return APR_ENAMETOOLONG;
}
*ressym = (apr_dso_handle_sym_t)GetProcAddressW(handle->handle, wsymname);
#else
*ressym = (apr_dso_handle_sym_t)GetProcAddress(handle->handle, symname);
#endif
if (!*ressym) {
return apr_get_os_error();
}
return APR_SUCCESS;
}
APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *dso, char *buf, apr_size_t bufsize)
{
return apr_strerror(dso->load_error, buf, bufsize);
}
#endif
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