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Nagram/TMessagesProj/jni/third_party/usrsctplib/netinet/sctp_userspace.c
xaxtix d30f796d8c Update to 8.6.0
2022-03-11 19:49:54 +03:00

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/*-
* Copyright (c) 2011-2012 Irene Ruengeler
* Copyright (c) 2011-2012 Michael Tuexen
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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 AUTHOR 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 AUTHOR 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.
*
*/
#ifdef _WIN32
#include <netinet/sctp_pcb.h>
#include <sys/timeb.h>
#include <iphlpapi.h>
#if !defined(__MINGW32__)
#pragma comment(lib, "iphlpapi.lib")
#endif
#endif
#include <netinet/sctp_os_userspace.h>
#if defined(__FreeBSD__)
#include <pthread_np.h>
#endif
#if defined(__linux__)
#include <sys/prctl.h>
#endif
#if defined(_WIN32)
/* Adapter to translate Unix thread start routines to Windows thread start
* routines.
*/
#if defined(__MINGW32__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpedantic"
#endif
static DWORD WINAPI
sctp_create_thread_adapter(void *arg) {
start_routine_t start_routine = (start_routine_t)arg;
return start_routine(NULL) == NULL;
}
int
sctp_userspace_thread_create(userland_thread_t *thread, start_routine_t start_routine)
{
*thread = CreateThread(NULL, 0, sctp_create_thread_adapter,
(void *)start_routine, 0, NULL);
if (*thread == NULL)
return GetLastError();
return 0;
}
#if defined(__MINGW32__)
#pragma GCC diagnostic pop
#endif
#else
int
sctp_userspace_thread_create(userland_thread_t *thread, start_routine_t start_routine)
{
return pthread_create(thread, NULL, start_routine, NULL);
}
#endif
void
sctp_userspace_set_threadname(const char *name)
{
#if defined(__APPLE__)
pthread_setname_np(name);
#endif
#if defined(__linux__)
prctl(PR_SET_NAME, name);
#endif
#if defined(__FreeBSD__)
pthread_set_name_np(pthread_self(), name);
#endif
}
#if !defined(_WIN32) && !defined(__native_client__)
int
sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af)
{
#if defined(INET) || defined(INET6)
struct ifreq ifr;
int fd;
#endif
int mtu;
switch (af) {
#if defined(INET)
case AF_INET:
#endif
#if defined(INET6)
case AF_INET6:
#endif
#if defined(INET) || defined(INET6)
memset(&ifr, 0, sizeof(struct ifreq));
mtu = 0;
if (if_indextoname(if_index, ifr.ifr_name) != NULL) {
/* TODO can I use the raw socket here and not have to open a new one with each query? */
if ((fd = socket(af, SOCK_DGRAM, 0)) < 0) {
break;
}
if (ioctl(fd, SIOCGIFMTU, &ifr) >= 0) {
mtu = ifr.ifr_mtu;
}
close(fd);
}
break;
#endif
case AF_CONN:
mtu = 1280;
break;
default:
mtu = 0;
break;
}
return (mtu);
}
#endif
#if defined(__native_client__)
int
sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af)
{
return 1280;
}
#endif
#if defined(__APPLE__) || defined(__DragonFly__) || defined(__linux__) || defined(__native_client__) || defined(__NetBSD__) || defined(_WIN32) || defined(__Fuchsia__) || defined(__EMSCRIPTEN__)
int
timingsafe_bcmp(const void *b1, const void *b2, size_t n)
{
const unsigned char *p1 = b1, *p2 = b2;
int ret = 0;
for (; n > 0; n--)
ret |= *p1++ ^ *p2++;
return (ret != 0);
}
#endif
#ifdef _WIN32
int
sctp_userspace_get_mtu_from_ifn(uint32_t if_index, int af)
{
#if defined(INET) || defined(INET6)
PIP_ADAPTER_ADDRESSES pAdapterAddrs, pAdapt;
DWORD AdapterAddrsSize, Err;
#endif
int mtu;
switch (af) {
#if defined(INET)
case AF_INET:
#endif
#if defined(INET6)
case AF_INET6:
#endif
#if defined(INET) || defined(INET6)
mtu = 0;
AdapterAddrsSize = 0;
pAdapterAddrs = NULL;
if ((Err = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, NULL, &AdapterAddrsSize)) != 0) {
if ((Err != ERROR_BUFFER_OVERFLOW) && (Err != ERROR_INSUFFICIENT_BUFFER)) {
SCTPDBG(SCTP_DEBUG_USR, "GetAdaptersAddresses() sizing failed with error code %d, AdapterAddrsSize = %d\n", Err, AdapterAddrsSize);
mtu = -1;
goto cleanup;
}
}
if ((pAdapterAddrs = (PIP_ADAPTER_ADDRESSES) GlobalAlloc(GPTR, AdapterAddrsSize)) == NULL) {
SCTPDBG(SCTP_DEBUG_USR, "Memory allocation error!\n");
mtu = -1;
goto cleanup;
}
if ((Err = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, pAdapterAddrs, &AdapterAddrsSize)) != ERROR_SUCCESS) {
SCTPDBG(SCTP_DEBUG_USR, "GetAdaptersAddresses() failed with error code %d\n", Err);
mtu = -1;
goto cleanup;
}
for (pAdapt = pAdapterAddrs; pAdapt; pAdapt = pAdapt->Next) {
if (pAdapt->IfIndex == if_index) {
mtu = pAdapt->Mtu;
break;
}
}
cleanup:
if (pAdapterAddrs != NULL) {
GlobalFree(pAdapterAddrs);
}
break;
#endif
case AF_CONN:
mtu = 1280;
break;
default:
mtu = 0;
break;
}
return (mtu);
}
void
getwintimeofday(struct timeval *tv)
{
FILETIME filetime;
ULARGE_INTEGER ularge;
GetSystemTimeAsFileTime(&filetime);
ularge.LowPart = filetime.dwLowDateTime;
ularge.HighPart = filetime.dwHighDateTime;
/* Change base from Jan 1 1601 00:00:00 to Jan 1 1970 00:00:00 */
#if defined(__MINGW32__)
ularge.QuadPart -= 116444736000000000ULL;
#else
ularge.QuadPart -= 116444736000000000UI64;
#endif
/*
* ularge.QuadPart is now the number of 100-nanosecond intervals
* since Jan 1 1970 00:00:00.
*/
#if defined(__MINGW32__)
tv->tv_sec = (long)(ularge.QuadPart / 10000000ULL);
tv->tv_usec = (long)((ularge.QuadPart % 10000000ULL) / 10ULL);
#else
tv->tv_sec = (long)(ularge.QuadPart / 10000000UI64);
tv->tv_usec = (long)((ularge.QuadPart % 10000000UI64) / 10UI64);
#endif
}
int
win_if_nametoindex(const char *ifname)
{
IP_ADAPTER_ADDRESSES *addresses, *addr;
ULONG status, size;
int index = 0;
if (!ifname) {
return 0;
}
size = 0;
status = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, NULL, &size);
if (status != ERROR_BUFFER_OVERFLOW) {
return 0;
}
addresses = malloc(size);
status = GetAdaptersAddresses(AF_UNSPEC, 0, NULL, addresses, &size);
if (status == ERROR_SUCCESS) {
for (addr = addresses; addr; addr = addr->Next) {
if (addr->AdapterName && !strcmp(ifname, addr->AdapterName)) {
index = addr->IfIndex;
break;
}
}
}
free(addresses);
return index;
}
#if WINVER < 0x0600
/* These functions are written based on the code at
* http://www.cs.wustl.edu/~schmidt/win32-cv-1.html
* Therefore, for the rest of the file the following applies:
*
*
* Copyright and Licensing Information for ACE(TM), TAO(TM), CIAO(TM),
* DAnCE(TM), and CoSMIC(TM)
*
* [1]ACE(TM), [2]TAO(TM), [3]CIAO(TM), DAnCE(TM), and [4]CoSMIC(TM)
* (henceforth referred to as "DOC software") are copyrighted by
* [5]Douglas C. Schmidt and his [6]research group at [7]Washington
* University, [8]University of California, Irvine, and [9]Vanderbilt
* University, Copyright (c) 1993-2012, all rights reserved. Since DOC
* software is open-source, freely available software, you are free to
* use, modify, copy, and distribute--perpetually and irrevocably--the
* DOC software source code and object code produced from the source, as
* well as copy and distribute modified versions of this software. You
* must, however, include this copyright statement along with any code
* built using DOC software that you release. No copyright statement
* needs to be provided if you just ship binary executables of your
* software products.
*
* You can use DOC software in commercial and/or binary software releases
* and are under no obligation to redistribute any of your source code
* that is built using DOC software. Note, however, that you may not
* misappropriate the DOC software code, such as copyrighting it yourself
* or claiming authorship of the DOC software code, in a way that will
* prevent DOC software from being distributed freely using an
* open-source development model. You needn't inform anyone that you're
* using DOC software in your software, though we encourage you to let
* [10]us know so we can promote your project in the [11]DOC software
* success stories.
*
* The [12]ACE, [13]TAO, [14]CIAO, [15]DAnCE, and [16]CoSMIC web sites
* are maintained by the [17]DOC Group at the [18]Institute for Software
* Integrated Systems (ISIS) and the [19]Center for Distributed Object
* Computing of Washington University, St. Louis for the development of
* open-source software as part of the open-source software community.
* Submissions are provided by the submitter ``as is'' with no warranties
* whatsoever, including any warranty of merchantability, noninfringement
* of third party intellectual property, or fitness for any particular
* purpose. In no event shall the submitter be liable for any direct,
* indirect, special, exemplary, punitive, or consequential damages,
* including without limitation, lost profits, even if advised of the
* possibility of such damages. Likewise, DOC software is provided as is
* with no warranties of any kind, including the warranties of design,
* merchantability, and fitness for a particular purpose,
* noninfringement, or arising from a course of dealing, usage or trade
* practice. Washington University, UC Irvine, Vanderbilt University,
* their employees, and students shall have no liability with respect to
* the infringement of copyrights, trade secrets or any patents by DOC
* software or any part thereof. Moreover, in no event will Washington
* University, UC Irvine, or Vanderbilt University, their employees, or
* students be liable for any lost revenue or profits or other special,
* indirect and consequential damages.
*
* DOC software is provided with no support and without any obligation on
* the part of Washington University, UC Irvine, Vanderbilt University,
* their employees, or students to assist in its use, correction,
* modification, or enhancement. A [20]number of companies around the
* world provide commercial support for DOC software, however. DOC
* software is Y2K-compliant, as long as the underlying OS platform is
* Y2K-compliant. Likewise, DOC software is compliant with the new US
* daylight savings rule passed by Congress as "The Energy Policy Act of
* 2005," which established new daylight savings times (DST) rules for
* the United States that expand DST as of March 2007. Since DOC software
* obtains time/date and calendaring information from operating systems
* users will not be affected by the new DST rules as long as they
* upgrade their operating systems accordingly.
*
* The names ACE(TM), TAO(TM), CIAO(TM), DAnCE(TM), CoSMIC(TM),
* Washington University, UC Irvine, and Vanderbilt University, may not
* be used to endorse or promote products or services derived from this
* source without express written permission from Washington University,
* UC Irvine, or Vanderbilt University. This license grants no permission
* to call products or services derived from this source ACE(TM),
* TAO(TM), CIAO(TM), DAnCE(TM), or CoSMIC(TM), nor does it grant
* permission for the name Washington University, UC Irvine, or
* Vanderbilt University to appear in their names.
*
* If you have any suggestions, additions, comments, or questions, please
* let [21]me know.
*
* [22]Douglas C. Schmidt
*
* References
*
* 1. http://www.cs.wustl.edu/~schmidt/ACE.html
* 2. http://www.cs.wustl.edu/~schmidt/TAO.html
* 3. http://www.dre.vanderbilt.edu/CIAO/
* 4. http://www.dre.vanderbilt.edu/cosmic/
* 5. http://www.dre.vanderbilt.edu/~schmidt/
* 6. http://www.cs.wustl.edu/~schmidt/ACE-members.html
* 7. http://www.wustl.edu/
* 8. http://www.uci.edu/
* 9. http://www.vanderbilt.edu/
* 10. mailto:doc_group@cs.wustl.edu
* 11. http://www.cs.wustl.edu/~schmidt/ACE-users.html
* 12. http://www.cs.wustl.edu/~schmidt/ACE.html
* 13. http://www.cs.wustl.edu/~schmidt/TAO.html
* 14. http://www.dre.vanderbilt.edu/CIAO/
* 15. http://www.dre.vanderbilt.edu/~schmidt/DOC_ROOT/DAnCE/
* 16. http://www.dre.vanderbilt.edu/cosmic/
* 17. http://www.dre.vanderbilt.edu/
* 18. http://www.isis.vanderbilt.edu/
* 19. http://www.cs.wustl.edu/~schmidt/doc-center.html
* 20. http://www.cs.wustl.edu/~schmidt/commercial-support.html
* 21. mailto:d.schmidt@vanderbilt.edu
* 22. http://www.dre.vanderbilt.edu/~schmidt/
* 23. http://www.cs.wustl.edu/ACE.html
*/
void
InitializeXPConditionVariable(userland_cond_t *cv)
{
cv->waiters_count = 0;
InitializeCriticalSection(&(cv->waiters_count_lock));
cv->events_[C_SIGNAL] = CreateEvent (NULL, FALSE, FALSE, NULL);
cv->events_[C_BROADCAST] = CreateEvent (NULL, TRUE, FALSE, NULL);
}
void
DeleteXPConditionVariable(userland_cond_t *cv)
{
CloseHandle(cv->events_[C_BROADCAST]);
CloseHandle(cv->events_[C_SIGNAL]);
DeleteCriticalSection(&(cv->waiters_count_lock));
}
int
SleepXPConditionVariable(userland_cond_t *cv, userland_mutex_t *mtx)
{
int result, last_waiter;
EnterCriticalSection(&cv->waiters_count_lock);
cv->waiters_count++;
LeaveCriticalSection(&cv->waiters_count_lock);
LeaveCriticalSection (mtx);
result = WaitForMultipleObjects(2, cv->events_, FALSE, INFINITE);
if (result==-1) {
result = GetLastError();
}
EnterCriticalSection(&cv->waiters_count_lock);
cv->waiters_count--;
last_waiter = result == (C_SIGNAL + C_BROADCAST && (cv->waiters_count == 0));
LeaveCriticalSection(&cv->waiters_count_lock);
if (last_waiter)
ResetEvent(cv->events_[C_BROADCAST]);
EnterCriticalSection (mtx);
return result;
}
void
WakeAllXPConditionVariable(userland_cond_t *cv)
{
int have_waiters;
EnterCriticalSection(&cv->waiters_count_lock);
have_waiters = cv->waiters_count > 0;
LeaveCriticalSection(&cv->waiters_count_lock);
if (have_waiters)
SetEvent (cv->events_[C_BROADCAST]);
}
#endif
#endif
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