44 lines
1.3 KiB
C
44 lines
1.3 KiB
C
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <cutils/log.h>
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#include <cutils/sockets.h>
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#ifdef HAVE_ANDROID_OS
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/* For the socket trust (credentials) check */
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#include <private/android_filesystem_config.h>
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#endif
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bool socket_peer_is_trusted(int fd)
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{
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#ifdef HAVE_ANDROID_OS
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struct ucred cr;
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socklen_t len = sizeof(cr);
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int n = getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &cr, &len);
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if (n != 0) {
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ALOGE("could not get socket credentials: %s\n", strerror(errno));
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return false;
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}
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if ((cr.uid != AID_ROOT) && (cr.uid != AID_SHELL)) {
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ALOGE("untrusted userid on other end of socket: userid %d\n", cr.uid);
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return false;
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}
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#endif
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return true;
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}
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