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