gecko/media/mtransport/test/buffered_stun_socket_unittest.cpp

478 lines
12 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
// Original author: ekr@rtfm.com
#include <iostream>
#include "nspr.h"
#include "nss.h"
#include "ssl.h"
#include "mozilla/Scoped.h"
extern "C" {
#include "nr_api.h"
#include "nr_socket.h"
#include "nr_socket_buffered_stun.h"
#include "transport_addr.h"
#include "stun.h"
}
#include "databuffer.h"
#include "mtransport_test_utils.h"
#include "nr_socket_prsock.h"
#define GTEST_HAS_RTTI 0
#include "gtest/gtest.h"
#include "gtest_utils.h"
using namespace mozilla;
MtransportTestUtils *test_utils;
static uint8_t kStunMessage[] = {
0x00, 0x01, 0x00, 0x08, 0x21, 0x12, 0xa4, 0x42,
0x9b, 0x90, 0xbe, 0x2c, 0xae, 0x1a, 0x0c, 0xa8,
0xa0, 0xd6, 0x8b, 0x08, 0x80, 0x28, 0x00, 0x04,
0xdb, 0x35, 0x5f, 0xaa
};
static size_t kStunMessageLen = sizeof(kStunMessage);
class DummySocket : public NrSocketBase {
public:
DummySocket()
: writable_(UINT_MAX),
write_buffer_(nullptr),
readable_(UINT_MAX),
read_buffer_(nullptr),
cb_(nullptr),
cb_arg_(nullptr),
self_(nullptr) {}
// the nr_socket APIs
virtual int create(nr_transport_addr *addr) {
return 0;
}
virtual int sendto(const void *msg, size_t len,
int flags, nr_transport_addr *to) {
MOZ_CRASH();
return 0;
}
virtual int recvfrom(void * buf, size_t maxlen,
size_t *len, int flags,
nr_transport_addr *from) {
MOZ_CRASH();
return 0;
}
virtual int getaddr(nr_transport_addr *addrp) {
MOZ_CRASH();
return 0;
}
virtual void close() {
}
virtual int connect(nr_transport_addr *addr) {
return 0;
}
virtual int write(const void *msg, size_t len, size_t *written) {
// Shouldn't be anything here.
EXPECT_EQ(nullptr, write_buffer_.get());
size_t to_write = std::min(len, writable_);
if (to_write) {
write_buffer_ = new DataBuffer(
static_cast<const uint8_t *>(msg), to_write);
*written = to_write;
}
return 0;
}
virtual int read(void* buf, size_t maxlen, size_t *len) {
if (!read_buffer_.get()) {
return R_WOULDBLOCK;
}
size_t to_read = std::min(read_buffer_->len(),
std::min(maxlen, readable_));
memcpy(buf, read_buffer_->data(), to_read);
*len = to_read;
if (to_read < read_buffer_->len()) {
read_buffer_ = new DataBuffer(read_buffer_->data() + to_read,
read_buffer_->len() - to_read);
} else {
read_buffer_ = nullptr;
}
return 0;
}
// Implementations of the async_event APIs.
// These are no-ops because we handle scheduling manually
// for test purposes.
virtual int async_wait(int how, NR_async_cb cb, void *cb_arg,
char *function, int line) {
EXPECT_EQ(nullptr, cb_);
cb_ = cb;
cb_arg_ = cb_arg;
return 0;
}
virtual int cancel(int how) {
cb_ = nullptr;
cb_arg_ = nullptr;
return 0;
}
// Read/Manipulate the current state.
void CheckWriteBuffer(uint8_t *data, size_t len) {
if (!len) {
EXPECT_EQ(nullptr, write_buffer_.get());
} else {
EXPECT_NE(nullptr, write_buffer_.get());
ASSERT_EQ(len, write_buffer_->len());
ASSERT_EQ(0, memcmp(data, write_buffer_->data(), len));
}
}
void ClearWriteBuffer() {
write_buffer_ = nullptr;
}
void SetWritable(size_t val) {
writable_ = val;
}
void FireWritableCb() {
NR_async_cb cb = cb_;
void *cb_arg = cb_arg_;
cb_ = nullptr;
cb_arg_ = nullptr;
cb(this, NR_ASYNC_WAIT_WRITE, cb_arg);
}
void SetReadBuffer(uint8_t *data, size_t len) {
EXPECT_EQ(nullptr, write_buffer_.get());
read_buffer_ = new DataBuffer(data, len);
}
void ClearReadBuffer() {
read_buffer_ = nullptr;
}
void SetReadable(size_t val) {
readable_ = val;
}
nr_socket *get_nr_socket() {
if (!self_) {
int r = nr_socket_create_int(this, vtbl(), &self_);
AddRef();
if (r)
return nullptr;
}
return self_;
}
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(DummySocket);
private:
DISALLOW_COPY_ASSIGN(DummySocket);
size_t writable_; // Amount we allow someone to write.
ScopedDeletePtr<DataBuffer> write_buffer_;
size_t readable_; // Amount we allow someone to read.
ScopedDeletePtr<DataBuffer> read_buffer_;
NR_async_cb cb_;
void *cb_arg_;
nr_socket *self_;
};
class BufferedStunSocketTest : public ::testing::Test {
public:
BufferedStunSocketTest()
: dummy_(nullptr),
test_socket_(nullptr) {}
~BufferedStunSocketTest() {
nr_socket_destroy(&test_socket_);
}
void SetUp() {
ScopedDeletePtr<DummySocket> dummy(new DummySocket());
int r = nr_socket_buffered_stun_create(
dummy->get_nr_socket(),
kStunMessageLen,
&test_socket_);
ASSERT_EQ(0, r);
dummy_ = dummy.forget(); // Now owned by test_socket_.
r = nr_ip4_str_port_to_transport_addr(
(char *)"192.0.2.133", 3333, IPPROTO_TCP, &remote_addr_);
ASSERT_EQ(0, r);
r = nr_socket_connect(test_socket_,
&remote_addr_);
ASSERT_EQ(0, r);
}
nr_socket *socket() { return test_socket_; }
protected:
DummySocket *dummy_;
nr_socket *test_socket_;
nr_transport_addr remote_addr_;
};
TEST_F(BufferedStunSocketTest, TestCreate) {
}
TEST_F(BufferedStunSocketTest, TestSendTo) {
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(0, r);
dummy_->CheckWriteBuffer(kStunMessage, kStunMessageLen);
}
TEST_F(BufferedStunSocketTest, TestSendToBuffered) {
dummy_->SetWritable(0);
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(0, r);
dummy_->CheckWriteBuffer(nullptr, 0);
dummy_->SetWritable(kStunMessageLen);
dummy_->FireWritableCb();
dummy_->CheckWriteBuffer(kStunMessage, kStunMessageLen);
}
TEST_F(BufferedStunSocketTest, TestSendFullThenDrain) {
dummy_->SetWritable(0);
for (;;) {
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
if (r == R_WOULDBLOCK)
break;
ASSERT_EQ(0, r);
}
// Nothing was written.
dummy_->CheckWriteBuffer(nullptr, 0);
// Now flush.
dummy_->SetWritable(kStunMessageLen);
dummy_->FireWritableCb();
dummy_->ClearWriteBuffer();
// Verify we can write something.
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(0, r);
// And that it appears.
dummy_->CheckWriteBuffer(kStunMessage, kStunMessageLen);
}
TEST_F(BufferedStunSocketTest, TestSendToPartialBuffered) {
dummy_->SetWritable(10);
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(0, r);
dummy_->CheckWriteBuffer(kStunMessage, 10);
dummy_->ClearWriteBuffer();
dummy_->SetWritable(kStunMessageLen);
dummy_->FireWritableCb();
dummy_->CheckWriteBuffer(kStunMessage + 10, kStunMessageLen - 10);
}
TEST_F(BufferedStunSocketTest, TestSendToReject) {
dummy_->SetWritable(0);
int r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(0, r);
dummy_->CheckWriteBuffer(nullptr, 0);
r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &remote_addr_);
ASSERT_EQ(R_WOULDBLOCK, r);
dummy_->CheckWriteBuffer(nullptr, 0);
}
TEST_F(BufferedStunSocketTest, TestSendToWrongAddr) {
nr_transport_addr addr;
int r = nr_ip4_str_port_to_transport_addr(
(char *)"192.0.2.134", 3333, IPPROTO_TCP, &addr);
ASSERT_EQ(0, r);
r = nr_socket_sendto(test_socket_,
kStunMessage,
kStunMessageLen,
0, &addr);
ASSERT_EQ(R_BAD_DATA, r);
}
TEST_F(BufferedStunSocketTest, TestReceiveRecvFrom) {
dummy_->SetReadBuffer(kStunMessage, kStunMessageLen);
unsigned char tmp[2048];
size_t len;
nr_transport_addr addr;
int r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(0, r);
ASSERT_EQ(kStunMessageLen, len);
ASSERT_EQ(0, memcmp(kStunMessage, tmp, kStunMessageLen));
ASSERT_EQ(0, nr_transport_addr_cmp(&addr, &remote_addr_,
NR_TRANSPORT_ADDR_CMP_MODE_ALL));
}
TEST_F(BufferedStunSocketTest, TestReceiveRecvFromPartial) {
dummy_->SetReadBuffer(kStunMessage, 15);
unsigned char tmp[2048];
size_t len;
nr_transport_addr addr;
int r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(R_WOULDBLOCK, r);
dummy_->SetReadBuffer(kStunMessage + 15, kStunMessageLen - 15);
r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(0, r);
ASSERT_EQ(kStunMessageLen, len);
ASSERT_EQ(0, memcmp(kStunMessage, tmp, kStunMessageLen));
ASSERT_EQ(0, nr_transport_addr_cmp(&addr, &remote_addr_,
NR_TRANSPORT_ADDR_CMP_MODE_ALL));
r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(R_WOULDBLOCK, r);
}
TEST_F(BufferedStunSocketTest, TestReceiveRecvFromGarbage) {
uint8_t garbage[50];
memset(garbage, 0xff, sizeof(garbage));
dummy_->SetReadBuffer(garbage, sizeof(garbage));
unsigned char tmp[2048];
size_t len;
nr_transport_addr addr;
int r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(R_BAD_DATA, r);
r = nr_socket_recvfrom(test_socket_,
tmp, sizeof(tmp), &len, 0,
&addr);
ASSERT_EQ(R_FAILED, r);
}
TEST_F(BufferedStunSocketTest, TestReceiveRecvFromTooShort) {
dummy_->SetReadBuffer(kStunMessage, kStunMessageLen);
unsigned char tmp[2048];
size_t len;
nr_transport_addr addr;
int r = nr_socket_recvfrom(test_socket_,
tmp, kStunMessageLen - 1, &len, 0,
&addr);
ASSERT_EQ(R_BAD_ARGS, r);
}
TEST_F(BufferedStunSocketTest, TestReceiveRecvFromReallyLong) {
uint8_t garbage[4096];
memset(garbage, 0xff, sizeof(garbage));
memcpy(garbage, kStunMessage, kStunMessageLen);
nr_stun_message_header *hdr = reinterpret_cast<nr_stun_message_header *>
(garbage);
hdr->length = htons(3000);
dummy_->SetReadBuffer(garbage, sizeof(garbage));
unsigned char tmp[4096];
size_t len;
nr_transport_addr addr;
int r = nr_socket_recvfrom(test_socket_,
tmp, kStunMessageLen - 1, &len, 0,
&addr);
ASSERT_EQ(R_BAD_DATA, r);
}
int main(int argc, char **argv)
{
test_utils = new MtransportTestUtils();
NSS_NoDB_Init(nullptr);
NSS_SetDomesticPolicy();
// Start the tests
::testing::InitGoogleTest(&argc, argv);
int rv = RUN_ALL_TESTS();
delete test_utils;
return rv;
}