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// Copyright 2022 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 proxyapp
import (
"context"
"encoding/json"
"fmt"
"io"
"time"
"github.com/google/syzkaller/pkg/config"
"github.com/google/syzkaller/pkg/osutil"
"github.com/google/syzkaller/vm/vmimpl"
)
func makeDefaultParams() *proxyAppParams {
return &proxyAppParams{
CommandRunner: osutilCommandContext,
InitRetryDelay: 10 * time.Second,
}
}
func init() {
vmimpl.Register(
"proxyapp",
func(env *vmimpl.Env) (vmimpl.Pool, error) {
return ctor(makeDefaultParams(), env)
},
false)
}
// Package configuration VARs are mostly needed for tests.
type proxyAppParams struct {
CommandRunner func(context.Context, string, ...string) subProcessCmd
InitRetryDelay time.Duration
}
func osutilCommandContext(ctx context.Context, bin string, args ...string) subProcessCmd {
return osutil.CommandContext(ctx, bin, args...)
}
type subProcessCmd interface {
StdinPipe() (io.WriteCloser, error)
StdoutPipe() (io.ReadCloser, error)
StderrPipe() (io.ReadCloser, error)
Start() error
Wait() error
}
type Config struct {
Command string `json:"cmd"`
ProxyAppConfig json.RawMessage `json:"config"`
}
func parseConfig(conf []byte) (*Config, error) {
vmCfg := new(Config)
if err := config.LoadData(conf, vmCfg); err != nil {
return nil, fmt.Errorf("failed to parseConfig(): %w", err)
}
return vmCfg, nil
}
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