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// Copyright 2024 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package rpcserver
import (
"net"
"testing"
"github.com/stretchr/testify/assert"
"github.com/google/syzkaller/pkg/flatrpc"
"github.com/google/syzkaller/pkg/mgrconfig"
"github.com/google/syzkaller/pkg/rpcserver/mocks"
"github.com/google/syzkaller/prog"
"github.com/google/syzkaller/sys/targets"
)
func getTestDefaultCfg() mgrconfig.Config {
return mgrconfig.Config{
Type: targets.Linux,
Sandbox: "none",
Derived: mgrconfig.Derived{
TargetOS: targets.TestOS,
TargetArch: targets.TestArch64,
TargetVMArch: targets.TestArch64,
Timeouts: targets.Timeouts{Slowdown: 1},
},
}
}
func TestNew(t *testing.T) {
defaultCfg := getTestDefaultCfg()
nilServer := func(s Server) {
assert.Nil(t, s)
}
tests := []struct {
name string
modifyCfg func() *mgrconfig.Config
debug bool
expectedServCheck func(Server)
expectsErr bool
expectedErr error
}{
{
name: "unknown Sandbox",
modifyCfg: func() *mgrconfig.Config {
cfg := defaultCfg
cfg.Sandbox = "unknown"
return &cfg
},
expectedServCheck: nilServer,
expectsErr: true,
},
{
name: "experimental features",
modifyCfg: func() *mgrconfig.Config {
cfg := defaultCfg
cfg.Experimental = mgrconfig.Experimental{
RemoteCover: false,
CoverEdges: true,
}
return &cfg
},
expectedServCheck: func(srv Server) {
s := srv.(*server)
assert.Equal(t, s.cfg.Config.Features, flatrpc.AllFeatures&(^flatrpc.FeatureExtraCoverage))
assert.Nil(t, s.serv)
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
cfg := tt.modifyCfg()
var err error
cfg.Target, err = prog.GetTarget(cfg.TargetOS, cfg.TargetArch)
assert.NoError(t, err)
serv, err := New(&RemoteConfig{
Config: cfg,
Stats: NewStats(),
Debug: tt.debug,
})
if tt.expectedErr != nil {
assert.Equal(t, tt.expectedErr, err)
} else if tt.expectsErr {
assert.Error(t, err)
} else {
assert.Nil(t, err)
}
tt.expectedServCheck(serv)
})
}
}
func TestCheckRevisions(t *testing.T) {
tests := []struct {
name string
req *flatrpc.ConnectRequest
target *prog.Target
noError bool
}{
{
name: "error - different Arch",
req: &flatrpc.ConnectRequest{
Arch: "arch",
},
target: &prog.Target{
Arch: "arch2",
},
},
{
name: "error - different GitRevision",
req: &flatrpc.ConnectRequest{
Arch: "arch",
GitRevision: "different",
},
target: &prog.Target{
Arch: "arch",
},
},
{
name: "error - different SyzRevision",
req: &flatrpc.ConnectRequest{
Arch: "arch",
GitRevision: prog.GitRevision,
SyzRevision: "1",
},
target: &prog.Target{
Arch: "arch",
Revision: "2",
},
},
{
name: "ok",
req: &flatrpc.ConnectRequest{
Arch: "arch",
GitRevision: prog.GitRevision,
SyzRevision: "1",
},
target: &prog.Target{
Arch: "arch",
Revision: "1",
},
noError: true,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
err := checkRevisions(tt.req, tt.target)
if tt.noError {
assert.NoError(t, err)
} else {
assert.Error(t, err)
}
})
}
}
func TestHandleConn(t *testing.T) {
inConn, outConn := net.Pipe()
serverConn := flatrpc.NewConn(inConn)
clientConn := flatrpc.NewConn(outConn)
managerMock := mocks.NewManager(t)
debug := false
defaultCfg := getTestDefaultCfg()
tests := []struct {
name string
modifyCfg func() *mgrconfig.Config
req *flatrpc.ConnectRequest
}{
{
name: "error, cfg.VMLess = false - unknown VM tries to connect",
modifyCfg: func() *mgrconfig.Config {
return &defaultCfg
},
req: &flatrpc.ConnectRequest{
Id: 2, // Valid Runner id is 1.
Arch: "64",
GitRevision: prog.GitRevision,
SyzRevision: "1",
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
cfg := tt.modifyCfg()
var err error
cfg.Target, err = prog.GetTarget(cfg.TargetOS, cfg.TargetArch)
cfg.Target.Revision = tt.req.SyzRevision
assert.NoError(t, err)
s, err := New(&RemoteConfig{
Config: cfg,
Manager: managerMock,
Stats: NewStats(),
Debug: debug,
})
assert.NoError(t, err)
serv := s.(*server)
injectExec := make(chan bool)
serv.CreateInstance(1, injectExec, nil)
go flatrpc.Send(clientConn, tt.req)
serv.handleConn(serverConn)
})
}
}
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