android_system_core/libcutils/sockets.c
jeffhao 2b8f76cdbb Tracking merge of dalvik-dev to master
Reordered bootclasspath to allow verification of all framework methods.
  git cherry-pick --no-commit  ec164a0170955fe63106c2576a65bc4ffb1df425

Address CVE-2011-1090.
  git cherry-pick --no-commit  3365288d3c00072689cd9d733e055561cadc87b5

Change-Id: I6a89bc600ced06a0cb84ae1670cb7a6ea39de9c8
2011-05-27 00:50:44 -07:00

44 lines
1.3 KiB
C

/*
* Copyright (C) 2011 The Android Open Source Project
*
* 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 <cutils/log.h>
#include <cutils/sockets.h>
#ifdef HAVE_ANDROID_OS
/* For the socket trust (credentials) check */
#include <private/android_filesystem_config.h>
#endif
bool socket_peer_is_trusted(int fd)
{
#ifdef HAVE_ANDROID_OS
struct ucred cr;
socklen_t len = sizeof(cr);
int n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
if (n != 0) {
LOGE("could not get socket credentials: %s\n", strerror(errno));
return false;
}
if ((cr.uid != AID_ROOT) && (cr.uid != AID_SHELL)) {
LOGE("untrusted userid on other end of socket: userid %d\n", cr.uid);
return false;
}
#endif
return true;
}