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// Copyright 2017 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 dashapi defines data structures used in dashboard communication
// and provides client interface.
package dashapi
import (
"bytes"
"compress/gzip"
"encoding/json"
"fmt"
"io"
"io/ioutil"
"net/http"
"net/url"
"reflect"
"strings"
)
type Dashboard struct {
Client string
Addr string
Key string
}
func New(client, addr, key string) *Dashboard {
return &Dashboard{
Client: client,
Addr: addr,
Key: key,
}
}
// Build describes all aspects of a kernel build.
type Build struct {
Manager string
ID string
SyzkallerCommit string
CompilerID string
KernelRepo string
KernelBranch string
KernelCommit string
KernelConfig []byte
}
func (dash *Dashboard) UploadBuild(build *Build) error {
return dash.query("upload_build", build, nil)
}
// Crash describes a single kernel crash (potentially with repro).
type Crash struct {
BuildID string // refers to Build.ID
Title string
Maintainers []string
Log []byte
Report []byte
// The following is optional and is filled only after repro.
ReproOpts []byte
ReproSyz []byte
ReproC []byte
}
func (dash *Dashboard) ReportCrash(crash *Crash) error {
return dash.query("report_crash", crash, nil)
}
// FailedRepro describes a failed repro attempt.
type FailedRepro struct {
Manager string
BuildID string
Title string
}
func (dash *Dashboard) ReportFailedRepro(repro *FailedRepro) error {
return dash.query("report_failed_repro", repro, nil)
}
type LogEntry struct {
Name string
Text string
}
// Centralized logging on dashboard.
func (dash *Dashboard) LogError(name, msg string, args ...interface{}) {
req := &LogEntry{
Name: name,
Text: fmt.Sprintf(msg, args...),
}
dash.query("log_error", req, nil)
}
// BugReport describes a single bug.
// Used by dashboard external reporting.
type BugReport struct {
Config []byte
ID string
Title string
Maintainers []string
CompilerID string
KernelRepo string
KernelBranch string
KernelCommit string
KernelConfig []byte
Log []byte
Report []byte
ReproC []byte
ReproSyz []byte
}
type BugUpdate struct {
ID string
Link string
Status BugStatus
ReproLevel ReproLevel
DupOf string
}
type BugUpdateReply struct {
OK bool
Text string
}
type PollRequest struct {
Type string
}
type PollResponse struct {
Reports []*BugReport
}
type (
BugStatus int
ReproLevel int
)
const (
BugStatusOpen BugStatus = iota
BugStatusUpstream
BugStatusInvalid
BugStatusDup
)
const (
ReproLevelNone ReproLevel = iota
ReproLevelSyz
ReproLevelC
)
func (dash *Dashboard) query(method string, req, reply interface{}) error {
return Query(dash.Client, dash.Addr, dash.Key, method,
http.NewRequest, http.DefaultClient.Do, req, reply)
}
type (
RequestCtor func(method, url string, body io.Reader) (*http.Request, error)
RequestDoer func(req *http.Request) (*http.Response, error)
)
func Query(client, addr, key, method string, ctor RequestCtor, doer RequestDoer, req, reply interface{}) error {
if reply != nil {
// json decoding behavior is somewhat surprising
// (see // https://github.com/golang/go/issues/21092).
// To avoid any surprises, we zero the reply.
typ := reflect.TypeOf(reply)
if typ.Kind() != reflect.Ptr {
return fmt.Errorf("resp must be a pointer")
}
reflect.ValueOf(reply).Elem().Set(reflect.New(typ.Elem()).Elem())
}
values := make(url.Values)
values.Add("client", client)
values.Add("key", key)
values.Add("method", method)
var body io.Reader
gzipped := false
if req != nil {
data, err := json.Marshal(req)
if err != nil {
return fmt.Errorf("failed to marshal request: %v", err)
}
if len(data) < 100 || addr == "" || strings.HasPrefix(addr, "http://localhost:") {
// Don't bother compressing tiny requests.
// Don't compress for dev_appserver which does not support gzip.
body = bytes.NewReader(data)
} else {
buf := new(bytes.Buffer)
gz := gzip.NewWriter(buf)
if _, err := gz.Write(data); err != nil {
return err
}
if err := gz.Close(); err != nil {
return err
}
body = buf
gzipped = true
}
}
url := fmt.Sprintf("%v/api?%v", addr, values.Encode())
r, err := ctor("POST", url, body)
if err != nil {
return err
}
if body != nil {
r.Header.Set("Content-Type", "application/json")
if gzipped {
r.Header.Set("Content-Encoding", "gzip")
}
}
resp, err := doer(r)
if err != nil {
return fmt.Errorf("http request failed: %v", err)
}
defer resp.Body.Close()
if resp.StatusCode != http.StatusOK {
data, _ := ioutil.ReadAll(resp.Body)
return fmt.Errorf("request failed with %v: %s", resp.Status, data)
}
if reply != nil {
if err := json.NewDecoder(resp.Body).Decode(reply); err != nil {
return fmt.Errorf("failed to unmarshal response: %v", err)
}
}
return nil
}
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