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/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "dso.h"
#include "apr_strings.h"
#if APR_HAS_DSO
#ifdef HAVE_STDDEF_H
#include <stddef.h>
#endif
#if APR_HAVE_STRING_H
#include <string.h> /* for strerror() on HP-UX */
#endif
static apr_status_t dso_cleanup(void *thedso)
{
apr_dso_handle_t *dso = thedso;
if (dso->handle == NULL)
return APR_SUCCESS;
#if defined(HPUX) || defined(HPUX10) || defined(HPUX11)
shl_unload((shl_t)dso->handle);
#elif defined(DARWIN)
NSUnLinkModule(dso->handle, FALSE);
#else
if (dlclose(dso->handle) != 0)
return APR_EINIT;
#endif
dso->handle = NULL;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle,
const char *path, apr_pool_t *ctx)
{
#if defined(HPUX) || defined(HPUX10) || defined(HPUX11)
shl_t os_handle = shl_load(path, BIND_IMMEDIATE|BIND_VERBOSE|BIND_NOSTART, 0L);
#elif defined(DARWIN)
NSObjectFileImage image;
NSModule os_handle;
char* err_msg = NULL;
if (NSCreateObjectFileImageFromFile(path, &image) != NSObjectFileImageSuccess) {
err_msg = "cannot create object file image";
}
else {
#ifdef NSLINKMODULE_OPTION_PRIVATE
os_handle = NSLinkModule(image, path,
NSLINKMODULE_OPTION_PRIVATE |
NSLINKMODULE_OPTION_RETURN_ON_ERROR);
#else
os_handle = NSLinkModule(image, path, TRUE);
#endif
}
#elif defined(OSF1) || defined(SEQUENT) || defined(SNI) ||\
(defined(__FreeBSD_version) && (__FreeBSD_version >= 220000))
void *os_handle = dlopen((char *)path, RTLD_NOW | RTLD_GLOBAL);
#else
void *os_handle = dlopen(path, RTLD_NOW | RTLD_GLOBAL);
#endif
*res_handle = apr_pcalloc(ctx, sizeof(**res_handle));
if(os_handle == NULL) {
#if defined(HPUX) || defined(HPUX10) || defined(HPUX11)
(*res_handle)->errormsg = strerror(errno);
return errno;
#elif defined(DARWIN)
(*res_handle)->errormsg = (err_msg) ? err_msg : "link failed";
return APR_EDSOOPEN;
#else
(*res_handle)->errormsg = dlerror();
return APR_EDSOOPEN;
#endif
}
(*res_handle)->handle = (void*)os_handle;
(*res_handle)->cont = ctx;
(*res_handle)->errormsg = NULL;
apr_pool_cleanup_register(ctx, *res_handle, dso_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_dso_unload(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,
apr_dso_handle_t *handle,
const char *symname)
{
#if defined(HPUX) || defined(HPUX10) || defined(HPUX11)
void *symaddr = NULL;
int status;
errno = 0;
status = shl_findsym((shl_t *)&handle->handle, symname, TYPE_PROCEDURE, &symaddr);
if (status == -1 && errno == 0) /* try TYPE_DATA instead */
status = shl_findsym((shl_t *)&handle->handle, symname, TYPE_DATA, &symaddr);
if (status = -1)
return APR_EINIT;
*ressym = symaddr;
return APR_SUCCESS;
#elif defined(DARWIN)
void *retval = NULL;
NSSymbol symbol;
char *symname2 = (char*)malloc(sizeof(char)*(strlen(symname)+2));
sprintf(symname2, "_%s", symname);
#ifdef NSLINKMODULE_OPTION_PRIVATE
symbol = NSLookupSymbolInModule((NSModule)handle->handle, symname2);
#else
symbol = NSLookupAndBindSymbol(symname2);
#endif
free(symname2);
if (symbol == NULL) {
handle->errormsg = "undefined symbol";
return APR_EINIT;
}
retval = NSAddressOfSymbol(symbol);
if (retval == NULL) {
handle->errormsg = "cannot resolve symbol";
return APR_EINIT;
}
#else /* use dlsym()/dlerror() */
#if defined(DLSYM_NEEDS_UNDERSCORE)
void *retval;
char *symbol = (char*)malloc(sizeof(char)*(strlen(symname)+2));
sprintf(symbol, "_%s", symname);
retval = dlsym(handle->handle, symbol);
free(symbol);
#elif defined(SEQUENT) || defined(SNI)
void *retval = dlsym(handle->handle, (char *)symname);
#else
void *retval = dlsym(handle->handle, symname);
#endif
if (retval == NULL) {
handle->errormsg = dlerror();
return APR_EINIT;
}
*ressym = retval;
return APR_SUCCESS;
#endif /* use dlsym()/dlerror() */
}
APR_DECLARE(const char *) apr_dso_error(apr_dso_handle_t *dso, char *buffer, apr_size_t buflen)
{
if (dso->errormsg) {
apr_cpystrn(buffer, dso->errormsg, buflen);
return dso->errormsg;
}
return "No Error";
}
#endif
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