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main.go
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main.go
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package main
import (
"context"
"encoding/json"
"flag"
"fmt"
_ "github.com/aliyun/alibaba-cloud-sdk-go/sdk"
_ "github.com/aliyun/alibaba-cloud-sdk-go/sdk/auth/credentials"
_ "github.com/aliyun/alibaba-cloud-sdk-go/sdk/requests"
_ "github.com/aliyun/alibaba-cloud-sdk-go/services/sts"
"github.com/aliyun/aliyun-log-go-sdk"
"github.com/golang/protobuf/proto"
oe "github.com/ossrs/go-oryx-lib/errors"
oh "github.com/ossrs/go-oryx-lib/http"
ol "github.com/ossrs/go-oryx-lib/logger"
"io"
"io/ioutil"
"net"
"net/http"
"net/url"
"os"
"strings"
"time"
)
func main() {
ctx := context.Background()
clients = make(map[string]*sls.Client)
var conf string
flag.StringVar(&conf, "c", "", "The config file path")
flag.Usage = func() {
fmt.Println(fmt.Sprintf("HTTP GIF as SLS writer"))
flag.PrintDefaults()
fmt.Println(fmt.Sprintf("For example:"))
fmt.Println(fmt.Sprintf(" %v -c main.conf", os.Args[0]))
}
flag.Parse()
if conf == "" {
flag.Usage()
os.Exit(-1)
}
co := Config{}
if err := func() error {
f, err := os.Open(conf)
if err != nil {
return err
}
defer f.Close()
b, err := ioutil.ReadAll(f)
if err != nil {
return err
}
if err := json.Unmarshal(b, &co); err != nil {
return err
}
return nil
}(); err != nil {
fmt.Println(err)
os.Exit(-1)
}
ol.Tf(ctx, "Run with conf=%v, port=%v, file=(%v,%v), aliyun(%v,%v,%v,%v,%v,%v)", conf,
co.Port, co.LogFile.Enabled, co.LogFile.Tank, co.LogAliyunAK.Enabled, co.LogAliyunAK.ID,
co.LogAliyunAK.Topic, co.LogAliyunAK.Project, co.LogAliyunAK.LogStore, co.LogAliyunAK.Endpoint)
var f *os.File
if co.LogFile.Enabled {
if co.LogFile.Tank == "" || co.LogFile.Tank == "stdout" {
f = os.Stdout
} else {
if lf, err := os.OpenFile(co.LogFile.Tank, os.O_WRONLY|os.O_CREATE|os.O_APPEND, 0666); err != nil {
ol.Ef(ctx, "Open %v err %v", co.LogFile.Tank, err)
os.Exit(-1)
} else {
defer lf.Close()
f = lf
}
}
}
oh.Server = "go-oryx"
ol.Tf(ctx, "Handle /")
http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
starttime := time.Now()
q := r.URL.Query()
cp := co.Parse(q)
logForApp, keepReferer, keepUA, keepOReferer, keepOUA, keepFWD := parseLogForApp(q)
if !strings.HasPrefix(r.URL.Path, "/gif") && !logForApp {
ol.Wf(ctx, "Ignore %v of %v", r.URL.Path, r.URL.String())
http.NotFound(w, r)
return
}
rip := GetOriginalClientIP(r)
ua := r.Header.Get("User-Agent")
referer := r.Header.Get("Referer")
rawURL := r.URL.RawQuery
if logForApp {
q.Set("rip", rip)
if keepOReferer {
q.Set("oreferer", referer)
}
if keepOUA {
q.Set("oua", ua)
}
if keepReferer {
q.Set("referer", reparseReferer(referer))
}
if keepUA {
q.Set("ua", reparseUserAgent(ua))
}
if keepFWD {
q.Set("fwd", strings.Join(r.Header["X-Forwarded-For"], ","))
}
} else {
q.Set("oreferer", referer)
q.Set("oua", ua)
q.Set("__tag__:__client_ip__", rip)
q.Set("__referer__", reparseReferer(referer))
q.Set("__userAgent__", reparseUserAgent(ua))
}
qq := make(map[string]string)
for k, _ := range q {
if q.Get(k) != "" {
qq[k] = q.Get(k)
}
}
bb, err := json.Marshal(qq)
if err != nil {
oh.WriteError(ctx, w, r, err)
return
}
go func() {
if err := writeSlsLog(ctx, &cp, qq); err != nil {
oh.WriteError(ctx, w, r, err)
return
}
if f != nil {
if _, err := io.WriteString(f, string(bb)+"\n"); err != nil {
oh.WriteError(ctx, w, r, err)
return
}
}
}()
ol.Tf(ctx, "Stat as %v from url=%v config=%v, cost=%v",
string(bb), rawURL, cp, time.Now().Sub(starttime))
if logForApp {
w.Write(nil)
return
}
h := w.Header()
h.Set("Content-Type", "image/gif")
h.Set("Access-Control-Allow-Origin", "*")
h.Set("Pragma", "no-cache")
h.Set("Cache-Control", "no-cache, no-store, must-revalidate, max-age=0")
h.Set("Expires", "0")
// GIF for HTML img at https://help.aliyun.com/document_detail/31752.html
b := []byte{
0x47, 0x49, 0x46, 0x38, 0x39, 0x61, 0x01, 0x00, 0x01, 0x00, 0x80, 0x01, 0x00, 0x00, 0x00, 0x00,
0xff, 0xff, 0xff, 0x21, 0xf9, 0x04, 0x01, 0x00, 0x00, 0x01, 0x00, 0x2c, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x01, 0x00, 0x00, 0x02, 0x02, 0x4c,
}
io.Copy(w, strings.NewReader(string(b)))
})
// HTML img at https://help.aliyun.com/document_detail/31752.html
help := "https://help.aliyun.com/document_detail/31752.html"
ol.Tf(ctx, "Server at :%v for http://127.0.0.1:%v/gif/v1/sls.gif?site=ossrs.net&path=/release/docker @see %v", co.Port, co.Port, help)
ol.Tf(ctx, "->Note that ?_sys_project=xxx to overwrite the SLS project")
ol.Tf(ctx, "->Note that ?_sys_logstore=xxx to overwrite the SLS logstore")
ol.Tf(ctx, "->Note that ?_sys_endpoint=xxx to overwrite the SLS endpoint")
ol.Tf(ctx, "->Note that ?_sys_logfmt=app to write raw data, without web fields")
ol.Tf(ctx, "->Note that ?_sys_keep_referer=true to keep the referer")
ol.Tf(ctx, "->Note that ?_sys_keep_ua=true to keep the ua")
ol.Tf(ctx, "->Note that ?_sys_keep_oreferer=true to keep the original referer")
ol.Tf(ctx, "->Note that ?_sys_keep_oua=true to keep the original ua")
ol.Tf(ctx, "->Note that ?_sys_keep_fwd=true to keep the original X-Forwarded-For")
http.ListenAndServe(fmt.Sprintf(":%v", co.Port), nil)
}
func GetOriginalClientIP(r *http.Request) string {
// https://gtranslate.io/forum/http-real-http-forwarded-for-t2980.html
//current the order to get client ip is clientip > X-Forwarded-For > X-Real-IP > remote addr
var rip string
q := r.URL.Query()
if rip = q.Get("clientip"); rip != "" {
return rip
}
if forwordIP := r.Header.Get("X-Forwarded-For"); forwordIP != "" {
index := strings.Index(forwordIP, ",")
if index != -1 {
rip = forwordIP[:index]
} else {
rip = forwordIP
}
return rip
}
if rip = r.Header.Get("X-Real-IP"); rip == "" {
if nip, _, err := net.SplitHostPort(r.RemoteAddr); err == nil {
rip = nip
}
}
return rip
}
func slsKVEncode(ctx context.Context, kvs map[string]string) ([]*sls.LogContent, error) {
if kvs == nil {
return nil, oe.New("nil")
}
var contents []*sls.LogContent
for key, value := range kvs {
contents = append(contents, &sls.LogContent{
Key: proto.String(key), Value: proto.String(value),
})
}
ol.If(ctx, "Encode JSON %v as KV %v", kvs, contents)
return contents, nil
}
var clients map[string]*sls.Client
func buildSlsClient(co *Config) *sls.Client {
if !co.LogAliyunAK.Enabled {
return nil
}
if v, ok := clients[co.LogAliyunAK.Endpoint]; ok {
return v
}
client := &sls.Client{}
client.Endpoint = co.LogAliyunAK.Endpoint
client.AccessKeyID = co.LogAliyunAK.ID
client.AccessKeySecret = co.LogAliyunAK.Secret
clients[co.LogAliyunAK.Endpoint] = client
return client
}
type Config struct {
Port int `json:"port"`
LogFile struct {
Enabled bool `json:"enabled"`
Tank string `json:"tank"`
} `json:"log_file"`
LogAliyunAK struct {
Enabled bool `json:"enabled"`
ID string `json:"id"`
Secret string `json:"secret"`
Topic string `json:"topic"`
Project string `json:"project"`
LogStore string `json:"logstore"`
Endpoint string `json:"endpoint"`
} `json:"log_aliyun_ak"`
}
func (co Config) String() string {
return fmt.Sprintf("project=%v, logstore=%v, endpoint=%v", co.LogAliyunAK.Project, co.LogAliyunAK.LogStore, co.LogAliyunAK.Endpoint)
}
func (co Config) Parse(q url.Values) Config {
cp := co
for k, v := range map[string]*string{
"_sys_project": &cp.LogAliyunAK.Project,
"_sys_logstore": &cp.LogAliyunAK.LogStore,
"_sys_endpoint": &cp.LogAliyunAK.Endpoint,
} {
if qv := q.Get(k); qv != "" {
q.Del(k)
*v = qv
}
}
return cp
}
func parseLogForApp(q url.Values) (logForApp, keepReferer, keepUA, keepOReferer, keepOUA, keepFWD bool) {
for k, v := range map[string]*bool{
"_sys_logfmt_app": &logForApp,
"_sys_keep_referer": &keepReferer,
"_sys_keep_ua": &keepUA,
"_sys_keep_oreferer": &keepOReferer,
"_sys_keep_oua": &keepOUA,
"_sys_keep_fwd": &keepFWD,
} {
if qv := q.Get(k); qv != "" {
q.Del(k)
if qv == "true" {
*v = true
}
}
}
return
}
func writeSlsLog(ctx context.Context, co *Config, qq map[string]string) error {
client := buildSlsClient(co)
if client == nil {
return nil
}
contents, err := slsKVEncode(ctx, qq)
if err != nil {
return err
}
logGroup := &sls.LogGroup{
Topic: proto.String(co.LogAliyunAK.Topic),
Logs: []*sls.Log{
&sls.Log{
Time: proto.Uint32(uint32(time.Now().Unix())),
Contents: contents,
},
},
}
err = client.PutLogs(co.LogAliyunAK.Project, co.LogAliyunAK.LogStore, logGroup)
if err != nil {
return err
}
return nil
}
func reparseReferer(referer string) string {
if referer != "" {
if u, err := url.Parse(referer); err == nil {
return u.Host
}
}
return referer
}
func reparseUserAgent(ua string) string {
if strings.Contains(ua, "Mac OS X") && strings.Contains(ua, "Macintosh") {
// Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
return "macOS"
} else if strings.Contains(ua, "Windows") {
// Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.90 Safari/537.36
// Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
return "windows"
} else if strings.Contains(ua, "Android") {
// Mozilla/5.0 (Linux; U; Android 8.1.0; zh-CN; EML-AL00 Build/HUAWEIEML-AL00) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/57.0.2987.108 baidu.sogo.uc.UCBrowser/11.9.4.974 UWS/2.13.1.48 Mobile Safari/537.36 AliApp(DingTalk/4.5.11) com.alibaba.android.rimet/10487439 Channel/227200 language/zh-CN
return "android"
} else if strings.Contains(ua, "iPhone") {
// Mozilla/5.0 (iPhone; CPU iPhone OS 7_0 like Mac OS X) AppleWebKit/537.51.1 (KHTML, like Gecko) Version/7.0 Mobile/11A465 Safari/9537.53 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)
return "ios"
} else if strings.Contains(ua, "Linux") {
// Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
// Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Firefox/68.0
return "linux"
} else if strings.HasPrefix(ua, "github-camo") || strings.HasPrefix(ua, "search-http-client") {
// github-camo (876de43e)
// search-http-client
return "agent"
} else if strings.Contains(ua, "spider") {
// Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)
return "spider"
} else if strings.Contains(ua, "curl") {
// curl/7.54.0
return "curl"
} else if strings.Contains(ua, "Go-http") {
// Go-http-client/1.1
return "go"
} else if len(ua) > 8 {
return ua[:8]
}
return ua
}