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/*
* Copyright (C) 2017 The Android Open Source Project
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef _SYS_SOCKET_H_
#error "Never include this file directly; instead, include <sys/socket.h>"
#endif
extern ssize_t __sendto_chk(int, const void*, size_t, size_t, int, const struct sockaddr*,
socklen_t) __INTRODUCED_IN(26);
ssize_t __recvfrom_chk(int, void*, size_t, size_t, int, struct sockaddr*,
socklen_t*) __INTRODUCED_IN(21);
#if defined(__BIONIC_FORTIFY)
#define __recvfrom_bad_size "'recvfrom' called with size bigger than buffer"
#define __sendto_bad_size "'sendto' called with size bigger than buffer"
#if defined(__clang__)
#if __ANDROID_API__ >= __ANDROID_API_N__
__BIONIC_FORTIFY_INLINE
ssize_t recvfrom(int fd, void* const buf __pass_object_size0, size_t len, int flags, struct sockaddr* src_addr, socklen_t* addr_len)
__overloadable
__clang_error_if(__bos(buf) != __BIONIC_FORTIFY_UNKNOWN_SIZE && __bos(buf) < len,
__recvfrom_bad_size) {
size_t bos = __bos0(buf);
if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
return __call_bypassing_fortify(recvfrom)(fd, buf, len, flags, src_addr, addr_len);
}
return __recvfrom_chk(fd, buf, len, bos, flags, src_addr, addr_len);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
#if __ANDROID_API__ >= __ANDROID_API_N_MR1__
__BIONIC_FORTIFY_INLINE
ssize_t sendto(int fd, const void* const buf __pass_object_size0, size_t len, int flags, const struct sockaddr* dest_addr, socklen_t addr_len)
__overloadable
__clang_error_if(__bos0(buf) != __BIONIC_FORTIFY_UNKNOWN_SIZE && __bos0(buf) < len,
__sendto_bad_size) {
size_t bos = __bos0(buf);
if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
return __call_bypassing_fortify(sendto)(fd, buf, len, flags, dest_addr, addr_len);
}
return __sendto_chk(fd, buf, len, bos, flags, dest_addr, addr_len);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_N_MR1__ */
__BIONIC_FORTIFY_INLINE
ssize_t recv(int socket, void* const buf __pass_object_size0, size_t len, int flags)
__overloadable
__clang_error_if(__bos0(buf) != __BIONIC_FORTIFY_UNKNOWN_SIZE && __bos0(buf) < len,
"'recv' called with size bigger than buffer") {
return recvfrom(socket, buf, len, flags, NULL, 0);
}
__BIONIC_FORTIFY_INLINE
ssize_t send(int socket, const void* const buf __pass_object_size0, size_t len, int flags)
__overloadable
__clang_error_if(__bos0(buf) != __BIONIC_FORTIFY_UNKNOWN_SIZE && __bos0(buf) < len,
"'send' called with size bigger than buffer") {
return sendto(socket, buf, len, flags, NULL, 0);
}
#else /* defined(__clang__) */
ssize_t __recvfrom_real(int, void*, size_t, int, struct sockaddr*, socklen_t*) __RENAME(recvfrom);
__errordecl(__recvfrom_error, __recvfrom_bad_size);
extern ssize_t __sendto_real(int, const void*, size_t, int, const struct sockaddr*, socklen_t)
__RENAME(sendto);
__errordecl(__sendto_error, __sendto_bad_size);
#if __ANDROID_API__ >= __ANDROID_API_N__
__BIONIC_FORTIFY_INLINE
ssize_t recvfrom(int fd, void* buf, size_t len, int flags,
struct sockaddr* src_addr, socklen_t* addr_len) {
size_t bos = __bos0(buf);
if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
return __recvfrom_real(fd, buf, len, flags, src_addr, addr_len);
}
if (__builtin_constant_p(len) && (len <= bos)) {
return __recvfrom_real(fd, buf, len, flags, src_addr, addr_len);
}
if (__builtin_constant_p(len) && (len > bos)) {
__recvfrom_error();
}
return __recvfrom_chk(fd, buf, len, bos, flags, src_addr, addr_len);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_N__ */
#if __ANDROID_API__ >= __ANDROID_API_N_MR1__
__BIONIC_FORTIFY_INLINE
ssize_t sendto(int fd, const void* buf, size_t len, int flags,
const struct sockaddr* dest_addr, socklen_t addr_len) {
size_t bos = __bos0(buf);
if (bos == __BIONIC_FORTIFY_UNKNOWN_SIZE) {
return __sendto_real(fd, buf, len, flags, dest_addr, addr_len);
}
if (__builtin_constant_p(len) && (len <= bos)) {
return __sendto_real(fd, buf, len, flags, dest_addr, addr_len);
}
if (__builtin_constant_p(len) && (len > bos)) {
__sendto_error();
}
return __sendto_chk(fd, buf, len, bos, flags, dest_addr, addr_len);
}
#endif /* __ANDROID_API__ >= __ANDROID_API_N_MR1__ */
__BIONIC_FORTIFY_INLINE
ssize_t recv(int socket, void* buf, size_t len, int flags) {
return recvfrom(socket, buf, len, flags, NULL, 0);
}
__BIONIC_FORTIFY_INLINE
ssize_t send(int socket, const void* buf, size_t len, int flags) {
return sendto(socket, buf, len, flags, NULL, 0);
}
#endif /* defined(__clang__) */
#undef __recvfrom_bad_size
#undef __sendto_bad_size
#endif /* __BIONIC_FORTIFY */
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