main (int argc, char **argv)
{
char *libname = NULL;
if (LIBNAME)
libname = LIBNAME;
else if (argc == 2 && argv[1] != NULL)
libname = argv[1];
if (libname)
{
if (! NSAddLibrary (libname))
{
fprintf (stderr, "Unable to load `%s' library.\n", libname);
exit (1);
}
if (NSIsSymbolNameDefined ("_foo"))
{
int (*addr)(void) =
NSAddressOfSymbol (NSLookupAndBindSymbol ("_foo"));
printf ("foo is resolved to address %lx\n", (unsigned long) addr);
if (addr)
addr ();
}
} else {
fprintf (stderr, "No library specified.\n");
}
if (SECONDLIBNAME)
libname = SECONDLIBNAME;
else if (argc == 2 && argv[1] != NULL)
libname = argv[1];
if (libname)
{
if (! NSAddLibrary (libname))
{
fprintf (stderr, "Unable to load `%s' library.\n", libname);
exit (1);
}
if (NSIsSymbolNameDefined ("_blubby"))
{
int (*addr)(int) =
NSAddressOfSymbol (NSLookupAndBindSymbol ("_blubby"));
printf ("blubby is resolved to address %lx\n", (unsigned long) addr);
if (addr)
{
addr (5);
addr (6);
}
}
} else {
fprintf (stderr, "No library specified.\n");
}
}
SharedLibraryRef
dyldSharedLibraryLoader::loadSharedLibrary(const String& filename,
const LoggerRef& logger) const
{
OW_LOG_DEBUG(logger, Format("Load request for %1 received.", filename));
NSObjectFileImage image = 0;
NSObjectFileImageReturnCode dsoerr = NSCreateObjectFileImageFromFile(filename.c_str(), &image);
const char* err_msg = NULL;
NSModule libhandle = NULL;
if (dsoerr == NSObjectFileImageSuccess)
{
libhandle = NSLinkModule(image, filename.c_str(), NSLINKMODULE_OPTION_RETURN_ON_ERROR | NSLINKMODULE_OPTION_PRIVATE);
if (!libhandle)
{
NSLinkEditErrors errors;
int errorNumber;
const char *fileName;
NSLinkEditError(&errors, &errorNumber, &fileName, &err_msg);
}
NSDestroyObjectFileImage(image);
}
else if ((dsoerr == NSObjectFileImageFormat ||
dsoerr == NSObjectFileImageInappropriateFile) &&
NSAddLibrary(filename.c_str()) == TRUE)
{
OW_LOG_ERROR(logger, Format("NSCreateObject: %1 failed with error \"%2\"",
filename, dsoerr));
// libhandle = (NSModule)DYLD_LIBRARY_HANDLE;
}
else
{
err_msg = "cannot create object file image or add library";
OW_LOG_ERROR(logger, Format("NSCreateObject: %1 failed with error %2",
filename, dsoerr));
}
if (libhandle)
{
try
{
return SharedLibraryRef( new dyldSharedLibrary(libhandle,
filename));
}
catch (...)
{
NSUnLinkModule(libhandle, FALSE);
throw;
}
}
else
{
OW_LOG_ERROR(logger, Format("dyldSharedLibraryLoader::loadSharedLibrary:"
" %1", err_msg));
return SharedLibraryRef( 0 );
}
}
/* Attempt to link a library from a specified filename */
dso_handle dso_link(const char *path)
{
/* We need to load the library publicly as NSModuleFileImage is not
yet implemented (at least for non MH_BUNDLE libraries */
if (NSAddLibrary(path) != TRUE)
return (NULL);
/* We need to return a non-null value, even if it has no meaning. One day
this whole crap will be fixed */
return ((void *)!NULL);
}
APR_DECLARE(apr_status_t) apr_dso_load(apr_dso_handle_t **res_handle,
const char *path, apr_pool_t *pool)
{
#if defined(DSO_USE_SHL)
shl_t os_handle = shl_load(path, BIND_IMMEDIATE, 0L);
#elif defined(DSO_USE_DYLD)
NSObjectFileImage image;
NSModule os_handle = NULL;
NSObjectFileImageReturnCode dsoerr;
const char* err_msg = NULL;
dsoerr = NSCreateObjectFileImageFromFile(path, &image);
if (dsoerr == NSObjectFileImageSuccess) {
#if defined(NSLINKMODULE_OPTION_RETURN_ON_ERROR) && defined(NSLINKMODULE_OPTION_NONE)
os_handle = NSLinkModule(image, path,
NSLINKMODULE_OPTION_RETURN_ON_ERROR |
NSLINKMODULE_OPTION_NONE);
/* If something went wrong, get the errors... */
if (!os_handle) {
NSLinkEditErrors errors;
int errorNumber;
const char *fileName;
NSLinkEditError(&errors, &errorNumber, &fileName, &err_msg);
}
#else
os_handle = NSLinkModule(image, path, FALSE);
#endif
NSDestroyObjectFileImage(image);
}
else if ((dsoerr == NSObjectFileImageFormat ||
dsoerr == NSObjectFileImageInappropriateFile) &&
NSAddLibrary(path) == TRUE) {
os_handle = (NSModule)DYLD_LIBRARY_HANDLE;
}
else {
err_msg = "cannot create object file image or add library";
}
#elif defined(DSO_USE_DLFCN)
#if defined(OSF1) || defined(SEQUENT) || defined(SNI) ||\
(defined(__FreeBSD_version) && (__FreeBSD_version >= 220000))
void *os_handle = dlopen((char *)path, RTLD_NOW | RTLD_GLOBAL);
#else
int flags = RTLD_NOW | RTLD_GLOBAL;
void *os_handle;
#ifdef _AIX
if (strchr(path + 1, '(') && path[strlen(path) - 1] == ')')
{
/* This special archive.a(dso.so) syntax is required for
* the way libtool likes to build shared libraries on AIX.
* dlopen() support for such a library requires that the
* RTLD_MEMBER flag be enabled.
*/
flags |= RTLD_MEMBER;
}
#endif
os_handle = dlopen(path, flags);
#endif
#endif /* DSO_USE_x */
*res_handle = apr_pcalloc(pool, sizeof(**res_handle));
if(os_handle == NULL) {
#if defined(DSO_USE_SHL)
(*res_handle)->errormsg = strerror(errno);
return APR_EDSOOPEN;
#elif defined(DSO_USE_DYLD)
(*res_handle)->errormsg = (err_msg) ? err_msg : "link failed";
return APR_EDSOOPEN;
#elif defined(DSO_USE_DLFCN)
(*res_handle)->errormsg = dlerror();
return APR_EDSOOPEN;
#endif
}
(*res_handle)->handle = (void*)os_handle;
(*res_handle)->pool = pool;
(*res_handle)->errormsg = NULL;
apr_pool_cleanup_register(pool, *res_handle, dso_cleanup, apr_pool_cleanup_null);
return APR_SUCCESS;
}
