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// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "build/build_config.h"
#include "mojo/core/test/mojo_test_base.h"
#include "mojo/public/c/system/buffer.h"
#include "mojo/public/c/system/data_pipe.h"
#include "mojo/public/c/system/functions.h"
#include "mojo/public/c/system/message_pipe.h"
#include "mojo/public/c/system/trap.h"
#include "mojo/public/c/system/types.h"
namespace mojo {
namespace core {
namespace {
using SignalsTest = test::MojoTestBase;
TEST_F(SignalsTest, QueryInvalidArguments) {
MojoHandleSignalsState state = {0, 0};
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
MojoQueryHandleSignalsState(MOJO_HANDLE_INVALID, &state));
MojoHandle a, b;
CreateMessagePipe(&a, &b);
EXPECT_EQ(MOJO_RESULT_INVALID_ARGUMENT,
MojoQueryHandleSignalsState(a, nullptr));
}
TEST_F(SignalsTest, QueryMessagePipeSignals) {
MojoHandleSignalsState state = {0, 0};
MojoHandle a, b;
CreateMessagePipe(&a, &b);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(a, &state));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, state.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_PEER_REMOTE |
MOJO_HANDLE_SIGNAL_QUOTA_EXCEEDED,
state.satisfiable_signals);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, state.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_PEER_REMOTE |
MOJO_HANDLE_SIGNAL_QUOTA_EXCEEDED,
state.satisfiable_signals);
WriteMessage(a, "ok");
EXPECT_EQ(MOJO_RESULT_OK, WaitForSignals(b, MOJO_HANDLE_SIGNAL_READABLE));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE,
state.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_PEER_REMOTE |
MOJO_HANDLE_SIGNAL_QUOTA_EXCEEDED,
state.satisfiable_signals);
EXPECT_EQ("ok", ReadMessage(b));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_WRITABLE, state.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_READABLE | MOJO_HANDLE_SIGNAL_WRITABLE |
MOJO_HANDLE_SIGNAL_PEER_CLOSED |
MOJO_HANDLE_SIGNAL_PEER_REMOTE |
MOJO_HANDLE_SIGNAL_QUOTA_EXCEEDED,
state.satisfiable_signals);
EXPECT_EQ(MOJO_RESULT_OK, MojoClose(a));
EXPECT_EQ(MOJO_RESULT_OK, WaitForSignals(b, MOJO_HANDLE_SIGNAL_PEER_CLOSED));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED, state.satisfied_signals);
EXPECT_EQ(MOJO_HANDLE_SIGNAL_PEER_CLOSED | MOJO_HANDLE_SIGNAL_QUOTA_EXCEEDED,
state.satisfiable_signals);
}
TEST_F(SignalsTest, LocalPeers) {
MojoHandleSignalsState state = {0, 0};
MojoHandle a, b, c, d;
CreateMessagePipe(&a, &b);
CreateMessagePipe(&c, &d);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(a, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(c, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(d, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
// Verify that sending a local pipe over a local pipe doesn't change the
// perceived locality of the peer.
const char kMessage[] = "ayyy";
WriteMessageWithHandles(a, kMessage, &c, 1);
EXPECT_EQ(kMessage, ReadMessageWithHandles(b, &c, 1));
WriteMessage(c, kMessage);
EXPECT_EQ(kMessage, ReadMessage(d));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(c, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(d, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
// Sanity check: a closed peer can never signal remoteness.
EXPECT_EQ(MOJO_RESULT_OK, MojoClose(c));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(d, &state));
EXPECT_FALSE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK, MojoClose(d));
EXPECT_EQ(MOJO_RESULT_OK, MojoClose(a));
EXPECT_EQ(MOJO_RESULT_OK, MojoClose(b));
}
#if !defined(OS_IOS)
TEST_F(SignalsTest, RemotePeers) {
MojoHandleSignalsState state = {0, 0};
MojoHandle a, b;
CreateMessagePipe(&a, &b);
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(a, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(a, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_UNSATISFIED));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(b, &state));
EXPECT_TRUE(state.satisfiable_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(b, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_UNSATISFIED));
RunTestClient("RemotePeersClient", [&](MojoHandle h) {
// The bootstrap pipe should eventually signal remoteness.
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(h, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_SATISFIED));
// And so should |a| after we send its peer.
WriteMessageWithHandles(h, ":)", &b, 1);
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(a, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_SATISFIED));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(a, &state));
EXPECT_TRUE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
// And so should |c| after we fuse |d| to |a|.
MojoHandle c, d;
CreateMessagePipe(&c, &d);
EXPECT_EQ(MOJO_RESULT_OK, MojoFuseMessagePipes(d, a, nullptr));
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(c, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_SATISFIED));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(c, &state));
EXPECT_TRUE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
// We fused c-d to a-b, so we'll just sort of "rename" |c| back to |a| so
// the system resembles the state it was in before we did that.
a = c;
WriteMessage(h, "OK!");
// Read |b| back before joining the client.
EXPECT_EQ("O_O", ReadMessageWithHandles(h, &b, 1));
// Wait for |a| to see its peer as local again.
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(a, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_UNSATISFIED));
EXPECT_EQ(MOJO_RESULT_OK, MojoQueryHandleSignalsState(a, &state));
EXPECT_FALSE(state.satisfied_signals & MOJO_HANDLE_SIGNAL_PEER_REMOTE);
});
}
DEFINE_TEST_CLIENT_TEST_WITH_PIPE(RemotePeersClient, SignalsTest, h) {
// The bootstrap pipe should eventually signal remoteness.
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(h, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_SATISFIED));
MojoHandle b;
EXPECT_EQ(":)", ReadMessageWithHandles(h, &b, 1));
// And so should |b|.
EXPECT_EQ(MOJO_RESULT_OK,
WaitForSignals(b, MOJO_HANDLE_SIGNAL_PEER_REMOTE,
MOJO_TRIGGER_CONDITION_SIGNALS_SATISFIED));
// Wait for the test to signal that it's ready to read |b| back.
EXPECT_EQ("OK!", ReadMessage(h));
// Now send |b| back home.
WriteMessageWithHandles(h, "O_O", &b, 1);
}
#endif // !defined(OS_IOS)
} // namespace
} // namespace core
} // namespace mojo
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