static jack_driver_desc_t *
jack_get_descriptor (JSList * drivers, const char * sofile, const char * symbol)
{
jack_driver_desc_t * descriptor, * other_descriptor;
JackDriverDescFunction so_get_descriptor = NULL;
JSList * node;
void * dlhandle;
char * filename;
#ifdef WIN32
int dlerr;
#else
const char * dlerr;
#endif
int err;
const char* driver_dir;
if ((driver_dir = getenv("JACK_DRIVER_DIR")) == 0) {
// for WIN32 ADDON_DIR is defined in JackConstants.h as relative path
// for posix systems, it is absolute path of default driver dir
#ifdef WIN32
char temp_driver_dir1[512];
char temp_driver_dir2[512];
GetCurrentDirectory(512, temp_driver_dir1);
sprintf(temp_driver_dir2, "%s/%s", temp_driver_dir1, ADDON_DIR);
driver_dir = temp_driver_dir2;
#else
driver_dir = ADDON_DIR;
#endif
}
filename = (char *)malloc(strlen (driver_dir) + 1 + strlen(sofile) + 1);
sprintf (filename, "%s/%s", driver_dir, sofile);
if ((dlhandle = LoadDriverModule(filename)) == NULL) {
#ifdef WIN32
jack_error ("could not open driver .dll '%s': %ld", filename, GetLastError());
#else
jack_error ("could not open driver .so '%s': %s", filename, dlerror());
#endif
free(filename);
return NULL;
}
so_get_descriptor = (JackDriverDescFunction)GetDriverProc(dlhandle, symbol);
#ifdef WIN32
if ((so_get_descriptor == NULL) && (dlerr = GetLastError()) != 0) {
jack_error("jack_get_descriptor : dll is not a driver, err = %ld", dlerr);
#else
if ((so_get_descriptor == NULL) && (dlerr = dlerror ()) != NULL) {
jack_error("jack_get_descriptor err = %s", dlerr);
#endif
UnloadDriverModule(dlhandle);
free(filename);
return NULL;
}
if ((descriptor = so_get_descriptor ()) == NULL) {
jack_error("driver from '%s' returned NULL descriptor", filename);
UnloadDriverModule(dlhandle);
free(filename);
return NULL;
}
#ifdef WIN32
if ((err = UnloadDriverModule(dlhandle)) == 0) {
jack_error ("error closing driver .so '%s': %ld", filename, GetLastError ());
}
#else
if ((err = UnloadDriverModule(dlhandle)) != 0) {
jack_error ("error closing driver .so '%s': %s", filename, dlerror ());
}
#endif
/* check it doesn't exist already */
for (node = drivers; node; node = jack_slist_next (node)) {
other_descriptor = (jack_driver_desc_t *) node->data;
if (strcmp(descriptor->name, other_descriptor->name) == 0) {
jack_error("the drivers in '%s' and '%s' both have the name '%s'; using the first",
other_descriptor->file, filename, other_descriptor->name);
/* FIXME: delete the descriptor */
free(filename);
return NULL;
}
}
strncpy(descriptor->file, filename, JACK_PATH_MAX);
free(filename);
return descriptor;
}
static bool check_symbol(const char* sofile, const char* symbol)
{
void * dlhandle;
bool res = false;
const char* driver_dir;
if ((driver_dir = getenv("JACK_DRIVER_DIR")) == 0) {
// for WIN32 ADDON_DIR is defined in JackConstants.h as relative path
// for posix systems, it is absolute path of default driver dir
#ifdef WIN32
char temp_driver_dir1[512];
char temp_driver_dir2[512];
GetCurrentDirectory(512, temp_driver_dir1);
sprintf(temp_driver_dir2, "%s/%s", temp_driver_dir1, ADDON_DIR);
driver_dir = temp_driver_dir2;
#else
driver_dir = ADDON_DIR;
#endif
}
char* filename = (char *)malloc(strlen (driver_dir) + 1 + strlen(sofile) + 1);
sprintf (filename, "%s/%s", driver_dir, sofile);
if ((dlhandle = LoadDriverModule(filename)) == NULL) {
#ifdef WIN32
jack_error ("could not open component .dll '%s': %ld", filename, GetLastError());
#else
jack_error ("could not open component .so '%s': %s", filename, dlerror());
#endif
} else {
res = (GetDriverProc(dlhandle, symbol)) ? true : false;
UnloadDriverModule(dlhandle);
}
free(filename);
return res;
}
static jack_driver_desc_t *
jack_drivers_get_descriptor (JSList * drivers, const char * sofile)
{
jack_driver_desc_t * descriptor, * other_descriptor;
JackDriverDescFunction so_get_descriptor;
JSList * node;
void * dlhandle;
char * filename;
const char * dlerr;
int err;
char* driver_dir;
if ((driver_dir = getenv("JACK_DRIVER_DIR")) == 0) {
driver_dir = ADDON_DIR;
}
filename = malloc (strlen (driver_dir) + 1 + strlen (sofile) + 1);
sprintf (filename, "%s/%s", driver_dir, sofile);
// if (verbose) {
// jack_info ("getting driver descriptor from %s", filename);
// }
if ((dlhandle = dlopen (filename, RTLD_NOW|RTLD_GLOBAL)) == NULL) {
jack_error ("could not open driver .so '%s': %s\n", filename, dlerror ());
free (filename);
return NULL;
}
so_get_descriptor = (JackDriverDescFunction)
dlsym (dlhandle, "driver_get_descriptor");
if ((dlerr = dlerror ()) != NULL) {
jack_error("%s", dlerr);
dlclose (dlhandle);
free (filename);
return NULL;
}
if ((descriptor = so_get_descriptor ()) == NULL) {
jack_error ("driver from '%s' returned NULL descriptor\n", filename);
dlclose (dlhandle);
free (filename);
return NULL;
}
if ((err = dlclose (dlhandle)) != 0) {
jack_error ("error closing driver .so '%s': %s\n", filename, dlerror ());
}
/* check it doesn't exist already */
for (node = drivers; node; node = jack_slist_next (node)) {
other_descriptor = (jack_driver_desc_t *) node->data;
if (strcmp (descriptor->name, other_descriptor->name) == 0) {
jack_error ("the drivers in '%s' and '%s' both have the name '%s'; using the first\n",
other_descriptor->file, filename, other_descriptor->name);
/* FIXME: delete the descriptor */
free (filename);
return NULL;
}
}
snprintf (descriptor->file, sizeof(descriptor->file), "%s", filename);
free (filename);
return descriptor;
}
