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// SPDX-License-Identifier: GPL-2.0-or-later
/*
*
* OBEX Server
*
* Copyright (C) 2007-2010 Marcel Holtmann <marcel@holtmann.org>
*
*
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#define _GNU_SOURCE
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdint.h>
#include <stdlib.h>
#include <sys/stat.h>
#include <glib.h>
#include "log.h"
#include "obex.h"
#include "mimetype.h"
static GSList *drivers = NULL;
static GSList *watches = NULL;
struct io_watch {
void *object;
obex_object_io_func func;
void *user_data;
};
void obex_object_set_io_flags(void *object, int flags, int err)
{
GSList *l;
for (l = watches; l;) {
struct io_watch *watch = l->data;
l = l->next;
if (watch->object != object)
continue;
if (watch->func(object, flags, err, watch->user_data) == TRUE)
continue;
if (g_slist_find(watches, watch) == NULL)
continue;
watches = g_slist_remove(watches, watch);
g_free(watch);
}
}
static struct io_watch *find_io_watch(void *object)
{
GSList *l;
for (l = watches; l; l = l->next) {
struct io_watch *watch = l->data;
if (watch->object == object)
return watch;
}
return NULL;
}
static void reset_io_watch(void *object)
{
struct io_watch *watch;
watch = find_io_watch(object);
if (watch == NULL)
return;
watches = g_slist_remove(watches, watch);
g_free(watch);
}
static int set_io_watch(void *object, obex_object_io_func func,
void *user_data)
{
struct io_watch *watch;
if (func == NULL) {
reset_io_watch(object);
return 0;
}
watch = find_io_watch(object);
if (watch)
return -EPERM;
watch = g_new0(struct io_watch, 1);
watch->object = object;
watch->func = func;
watch->user_data = user_data;
watches = g_slist_append(watches, watch);
return 0;
}
static struct obex_mime_type_driver *find_driver(const uint8_t *target,
unsigned int target_size,
const char *mimetype, const uint8_t *who,
unsigned int who_size)
{
GSList *l;
for (l = drivers; l; l = l->next) {
struct obex_mime_type_driver *driver = l->data;
if (memncmp0(target, target_size, driver->target, driver->target_size))
continue;
if (memncmp0(who, who_size, driver->who, driver->who_size))
continue;
if (mimetype == NULL || driver->mimetype == NULL) {
if (mimetype == driver->mimetype)
return driver;
else
continue;
}
if (g_ascii_strcasecmp(mimetype, driver->mimetype) == 0)
return driver;
}
return NULL;
}
struct obex_mime_type_driver *obex_mime_type_driver_find(const uint8_t *target,
unsigned int target_size,
const char *mimetype, const uint8_t *who,
unsigned int who_size)
{
struct obex_mime_type_driver *driver;
driver = find_driver(target, target_size, mimetype, who, who_size);
if (driver == NULL) {
if (who != NULL) {
/* Fallback to non-who specific */
driver = find_driver(target, target_size, mimetype, NULL, 0);
if (driver != NULL)
return driver;
}
if (mimetype != NULL)
/* Fallback to target default */
driver = find_driver(target, target_size, NULL, NULL, 0);
if (driver == NULL)
/* Fallback to general default */
driver = find_driver(NULL, 0, NULL, NULL, 0);
}
return driver;
}
int obex_mime_type_driver_register(struct obex_mime_type_driver *driver)
{
if (!driver) {
error("Invalid driver");
return -EINVAL;
}
if (find_driver(driver->target, driver->target_size, driver->mimetype,
driver->who, driver->who_size)) {
error("Permission denied: %s could not be registered",
driver->mimetype);
return -EPERM;
}
if (driver->set_io_watch == NULL)
driver->set_io_watch = set_io_watch;
DBG("driver %p mimetype %s registered", driver, driver->mimetype);
drivers = g_slist_append(drivers, driver);
return 0;
}
void obex_mime_type_driver_unregister(struct obex_mime_type_driver *driver)
{
if (!g_slist_find(drivers, driver)) {
error("Unable to unregister: No such driver %p", driver);
return;
}
DBG("driver %p mimetype %s unregistered", driver, driver->mimetype);
drivers = g_slist_remove(drivers, driver);
}
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