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/*
*
* Copyright (c) 2020-2021 Project CHIP Authors
* Copyright (c) 2013-2018 Nest Labs, Inc.
*
* 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.
*/
/**
* @file
* This file implements constants, globals and interfaces common to
* and used by all CHP Inet layer library test applications and
* tools.
*
* NOTE: These do not comprise a public part of the CHIP API and
* are subject to change without notice.
*
*/
#include "TestInetCommon.h"
#include "TestInetCommonOptions.h"
#include <assert.h>
#include <errno.h>
#include <vector>
#include <inttypes.h>
#include <stdint.h>
#include <string.h>
#include <sys/types.h>
#include <unistd.h>
#include <lib/core/ErrorStr.h>
#include <lib/support/CHIPMem.h>
#include <lib/support/ScopedBuffer.h>
#include <platform/PlatformManager.h>
#include <system/SystemClock.h>
#if CHIP_SYSTEM_CONFIG_USE_LWIP
#include <lwip/dns.h>
#if (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
#include <lwip/ip6_route_table.h>
#endif // (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
#include <lwip/init.h>
#include <lwip/netif.h>
#include <lwip/sys.h>
#include <lwip/tcpip.h>
#include <netif/etharp.h>
#if CHIP_TARGET_STYLE_UNIX
// NOTE: this used to be supported, so could theoretically be
// recovered, however the TAP/TUN was never actually used
// and the underlying files were never compiled in CHIP.
#error "Testing of LWIP on unix systems via TAP not supported."
#endif // CHIP_TARGET_STYLE_UNIX
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
using namespace chip;
using namespace chip::Inet;
System::LayerImpl gSystemLayer;
Inet::UDPEndPointManagerImpl gUDP;
Inet::TCPEndPointManagerImpl gTCP;
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
static sys_mbox_t * sLwIPEventQueue = NULL;
static unsigned int sLwIPAcquireCount = 0;
static void AcquireLwIP(void)
{
if (sLwIPAcquireCount++ == 0)
{
sys_mbox_new(sLwIPEventQueue, 100);
}
}
static void ReleaseLwIP(void)
{
#if (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
if (sLwIPAcquireCount > 0 && --sLwIPAcquireCount == 0)
{
#if defined(INCLUDE_vTaskDelete) && INCLUDE_vTaskDelete
// FreeRTOS need to delete the task not return from it.
tcpip_finish(reinterpret_cast<tcpip_will_finish_fn>(vTaskDelete), NULL);
#else // defined(INCLUDE_vTaskDelete) && INCLUDE_vTaskDelete
tcpip_finish(NULL, NULL);
#endif // defined(INCLUDE_vTaskDelete) && INCLUDE_vTaskDelete
}
#endif // (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
}
static std::vector<struct netif> sNetIFs; // interface to filter
static bool NetworkIsReady();
static void OnLwIPInitComplete(void * arg);
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
char gDefaultTapDeviceName[32];
bool gDone = false;
void InetFailError(CHIP_ERROR err, const char * msg)
{
if (err != CHIP_NO_ERROR)
{
fprintf(stderr, "%s: %s\n", msg, ErrorStr(err));
exit(-1);
}
}
static void UseStdoutLineBuffering()
{
// Set stdout to be line buffered with a buffer of 512 (will flush on new line
// or when the buffer of 512 is exceeded).
#if CHIP_CONFIG_MEMORY_MGMT_MALLOC
constexpr char * buf = nullptr;
#else
static char buf[512];
#endif // CHIP_CONFIG_MEMORY_MGMT_MALLOC
setvbuf(stdout, buf, _IOLBF, 512);
}
void InitTestInetCommon()
{
chip::Platform::MemoryInit();
UseStdoutLineBuffering();
}
void ShutdownTestInetCommon()
{
chip::Platform::MemoryShutdown();
}
void InitSystemLayer()
{
#if CHIP_SYSTEM_CONFIG_USE_LWIP
// LwIP implementation uses the event loop for servicing events.
// The CHIP stack initialization is required then.
chip::DeviceLayer::PlatformMgr().InitChipStack();
#ifndef CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT
AcquireLwIP();
#endif // !CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
gSystemLayer.Init();
}
void ShutdownSystemLayer()
{
gSystemLayer.Shutdown();
#if CHIP_SYSTEM_CONFIG_USE_LWIP
// LwIP implementation uses the event loop for servicing events.
// The CHIP stack shutdown is required then.
chip::DeviceLayer::PlatformMgr().Shutdown();
#ifndef CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT
ReleaseLwIP();
#endif // !CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
}
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
static void PrintNetworkState()
{
char intfName[chip::Inet::InterfaceId::kMaxIfNameLength];
for (size_t j = 0; j < gNetworkOptions.TapDeviceName.size(); j++)
{
struct netif * netIF = &(sNetIFs[j]);
InterfaceId(netIF).GetInterfaceName(intfName, sizeof(intfName));
printf("LwIP interface ready\n");
printf(" Interface Name: %s\n", intfName);
printf(" Tap Device: %s\n", gNetworkOptions.TapDeviceName[j]);
#if INET_CONFIG_ENABLE_IPV4
printf(" IPv4 Address: %s\n", ipaddr_ntoa(&(netIF->ip_addr)));
printf(" IPv4 Mask: %s\n", ipaddr_ntoa(&(netIF->netmask)));
printf(" IPv4 Gateway: %s\n", ipaddr_ntoa(&(netIF->gw)));
#endif // INET_CONFIG_ENABLE_IPV4
for (int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++)
{
if (!ip6_addr_isany(netif_ip6_addr(netIF, i)))
{
printf(" IPv6 address: %s, 0x%02x\n", ip6addr_ntoa(netif_ip6_addr(netIF, i)), netif_ip6_addr_state(netIF, i));
}
}
}
}
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
void InitNetwork()
{
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
// If an tap device name hasn't been specified, derive one from the IPv6 interface id.
if (gNetworkOptions.TapDeviceName.empty())
{
for (size_t j = 0; j < gNetworkOptions.LocalIPv6Addr.size(); j++)
{
uint64_t iid = gNetworkOptions.LocalIPv6Addr[j].InterfaceId();
char * tap_name = (char *) chip::Platform::MemoryAlloc(sizeof(gDefaultTapDeviceName));
assert(tap_name);
snprintf(tap_name, sizeof(gDefaultTapDeviceName), "chip-dev-%x", static_cast<uint16_t>(iid));
gNetworkOptions.TapDeviceName.push_back(tap_name);
}
}
sNetIFs.clear();
for (size_t j = 0; j < gNetworkOptions.TapDeviceName.size(); j++)
{
struct netif netIF;
sNetIFs.push_back(netIF);
}
tcpip_init(OnLwIPInitComplete, NULL);
// Lock LwIP stack
LOCK_TCPIP_CORE();
for (size_t j = 0; j < gNetworkOptions.TapDeviceName.size(); j++)
{
std::vector<char *> addrsVec;
addrsVec.clear();
#if INET_CONFIG_ENABLE_IPV4
IPAddress ip4Addr = (j < gNetworkOptions.LocalIPv4Addr.size()) ? gNetworkOptions.LocalIPv4Addr[j] : IPAddress::Any;
for (size_t n = 0; n < addrsVec.size(); n++)
{
IPAddress auto_addr;
if (IPAddress::FromString(addrsVec[n], auto_addr) && auto_addr.IsIPv4())
{
ip4Addr = auto_addr;
}
}
#endif // INET_CONFIG_ENABLE_IPV4
netif_create_ip6_linklocal_address(&(sNetIFs[j]), 1);
#if (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
if (j < gNetworkOptions.LocalIPv6Addr.size())
{
ip6_addr_t ip6addr = gNetworkOptions.LocalIPv6Addr[j].ToIPv6();
s8_t index;
netif_add_ip6_address_with_route(&(sNetIFs[j]), &ip6addr, 64, &index);
// add ipv6 route for ipv6 address
if (j < gNetworkOptions.IPv6GatewayAddr.size())
{
static ip6_addr_t br_ip6_addr = gNetworkOptions.IPv6GatewayAddr[j].ToIPv6();
struct ip6_prefix ip6_prefix;
ip6_prefix.addr = Inet::IPAddress::Any.ToIPv6();
ip6_prefix.prefix_len = 0;
ip6_add_route_entry(&ip6_prefix, &sNetIFs[j], &br_ip6_addr, NULL);
}
if (index >= 0)
{
netif_ip6_addr_set_state(&(sNetIFs[j]), index, IP6_ADDR_PREFERRED);
}
}
for (size_t n = 0; n < addrsVec.size(); n++)
{
IPAddress auto_addr;
if (IPAddress::FromString(addrsVec[n], auto_addr) && !auto_addr.IsIPv4())
{
ip6_addr_t ip6addr = auto_addr.ToIPv6();
s8_t index;
if (auto_addr.IsIPv6LinkLocal())
continue; // skip over the LLA addresses, LwIP is aready adding those
if (auto_addr.IsIPv6Multicast())
continue; // skip over the multicast addresses from host for now.
netif_add_ip6_address_with_route(&(sNetIFs[j]), &ip6addr, 64, &index);
if (index >= 0)
{
netif_ip6_addr_set_state(&(sNetIFs[j]), index, IP6_ADDR_PREFERRED);
}
}
}
#endif // (LWIP_VERSION_MAJOR == 2) && (LWIP_VERSION_MINOR == 0)
netif_set_up(&(sNetIFs[j]));
netif_set_link_up(&(sNetIFs[j]));
}
netif_set_default(&(sNetIFs[0]));
// UnLock LwIP stack
UNLOCK_TCPIP_CORE();
while (!NetworkIsReady())
{
constexpr uint32_t kSleepTimeMilliseconds = 100;
ServiceEvents(kSleepTimeMilliseconds);
}
// FIXME: this is kinda nasty :(
// Force new IP address to be ready, bypassing duplicate detection.
for (size_t j = 0; j < gNetworkOptions.TapDeviceName.size(); j++)
{
if (j < gNetworkOptions.LocalIPv6Addr.size())
{
netif_ip6_addr_set_state(&(sNetIFs[j]), 2, 0x30);
}
else
{
netif_ip6_addr_set_state(&(sNetIFs[j]), 1, 0x30);
}
}
PrintNetworkState();
AcquireLwIP();
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
gTCP.Init(gSystemLayer);
gUDP.Init(gSystemLayer);
}
void ServiceEvents(uint32_t aSleepTimeMilliseconds)
{
static bool printed = false;
if (!printed)
{
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
if (NetworkIsReady())
#endif
{
printf("CHIP node ready to service events\n");
fflush(stdout);
printed = true;
}
}
// Start a timer (with a no-op callback) to ensure that WaitForEvents() does not block longer than aSleepTimeMilliseconds.
gSystemLayer.StartTimer(
System::Clock::Milliseconds32(aSleepTimeMilliseconds), [](System::Layer *, void *) -> void {}, nullptr);
#if CHIP_SYSTEM_CONFIG_USE_SOCKETS
gSystemLayer.PrepareEvents();
gSystemLayer.WaitForEvents();
gSystemLayer.HandleEvents();
#endif
#if CHIP_SYSTEM_CONFIG_USE_LWIP
if (gSystemLayer.IsInitialized())
{
static uint32_t sRemainingSystemLayerEventDelay = 0;
if (sRemainingSystemLayerEventDelay == 0)
{
#if CHIP_DEVICE_LAYER_TARGET_OPEN_IOT_SDK
// We need to terminate event loop after performance single step.
// Event loop processing work items until StopEventLoopTask is called.
// Scheduling StopEventLoop task guarantees correct operation of the loop.
chip::DeviceLayer::PlatformMgr().ScheduleWork(
[](intptr_t) -> void { chip::DeviceLayer::PlatformMgr().StopEventLoopTask(); }, (intptr_t) nullptr);
#endif // CHIP_DEVICE_LAYER_TARGET_OPEN_IOT_SDK
chip::DeviceLayer::PlatformMgr().RunEventLoop();
sRemainingSystemLayerEventDelay = gNetworkOptions.EventDelay;
}
else
sRemainingSystemLayerEventDelay--;
gSystemLayer.HandlePlatformTimer();
}
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP
}
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
static bool NetworkIsReady()
{
bool ready = true;
for (size_t j = 0; j < gNetworkOptions.TapDeviceName.size(); j++)
{
for (int i = 0; i < LWIP_IPV6_NUM_ADDRESSES; i++)
{
if (!ip6_addr_isany(netif_ip6_addr(&(sNetIFs[j]), i)) && ip6_addr_istentative(netif_ip6_addr_state(&(sNetIFs[j]), i)))
{
ready = false;
break;
}
}
}
return ready;
}
static void OnLwIPInitComplete(void * arg)
{
printf("Waiting for addresses assignment...\n");
}
#endif // CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
void ShutdownNetwork()
{
gTCP.ForEachEndPoint([](TCPEndPoint * lEndPoint) -> Loop {
gTCP.ReleaseEndPoint(lEndPoint);
return Loop::Continue;
});
gTCP.Shutdown();
gUDP.ForEachEndPoint([](UDPEndPoint * lEndPoint) -> Loop {
gUDP.ReleaseEndPoint(lEndPoint);
return Loop::Continue;
});
gUDP.Shutdown();
#if CHIP_SYSTEM_CONFIG_USE_LWIP && !(CHIP_SYSTEM_CONFIG_LWIP_SKIP_INIT)
ReleaseLwIP();
#endif
}
void DumpMemory(const uint8_t * mem, uint32_t len, const char * prefix, uint32_t rowWidth)
{
int indexWidth = snprintf(nullptr, 0, "%" PRIX32, len);
if (indexWidth < 4)
indexWidth = 4;
for (uint32_t i = 0; i < len; i += rowWidth)
{
printf("%s%0*" PRIX32 ": ", prefix, indexWidth, i);
uint32_t rowEnd = i + rowWidth;
uint32_t j = i;
for (; j < rowEnd && j < len; j++)
printf("%02X ", mem[j]);
for (; j < rowEnd; j++)
printf(" ");
for (j = i; j < rowEnd && j < len; j++)
if (isprint(static_cast<char>(mem[j])))
printf("%c", mem[j]);
else
printf(".");
printf("\n");
}
}
void DumpMemory(const uint8_t * mem, uint32_t len, const char * prefix)
{
const uint32_t kRowWidth = 16;
DumpMemory(mem, len, prefix, kRowWidth);
}