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server.go
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server.go
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package hookserver
import (
"bytes"
"encoding/json"
"errors"
"io/ioutil"
"log"
"net/http"
// "net/http/cgi"
"net/url"
"os"
"os/exec"
"path"
"path/filepath"
"strings"
"text/template"
scan "github.com/mattn/go-scan"
)
type EventConfig struct {
Path string
Values map[string]string
PathTemplate *template.Template
}
func (event *EventConfig) Compile(name string) {
event.PathTemplate = template.Must(template.New(name).Parse(event.Path))
}
func (event *EventConfig) CalcPath(val map[string]string) string {
var doc bytes.Buffer
event.PathTemplate.Execute(&doc, val)
return doc.String()
}
func (event *EventConfig) GetBinPath(val map[string]string) string {
bin := event.CalcPath(val)
if !path.IsAbs(bin) {
bin = "/" + bin
}
bin = path.Clean(bin)
return bin
}
type HookServer struct {
Addr string
EventMap map[string]*EventConfig
Logger *log.Logger
DefaultBin string
Secret string
ScriptRoot string
}
func NewHookServer() *HookServer {
p, _ := filepath.Abs(".")
logger := log.New(os.Stdout, "* ", log.LstdFlags)
return &HookServer{":8999", make(map[string]*EventConfig), logger, "_all", "", p + "/scripts"}
}
func getPayloadString(r *http.Request, body *[]byte) (*[]byte, error) {
contentType := r.Header.Get("content-type")
if contentType == "application/x-www-form-urlencoded" {
values, err := url.ParseQuery(string(*body))
if err != nil {
return nil, err
}
pValues := values["payload"]
if len(pValues) == 0 {
return nil, errors.New("No payload found")
}
ret := []byte(pValues[0])
return &ret, nil
} else if contentType == "application/json" {
return body, nil
} else {
return nil, errors.New("Unknown content type")
}
}
func parsePayload(val map[string]string, payloadS *[]byte, values map[string]string) error {
var payload interface{}
if err := json.Unmarshal(*payloadS, &payload); err != nil {
return err
}
for name, jpath := range values {
var value string
if scan.ScanTree(payload, jpath, &value) == nil {
val[name] = value
}
}
return nil
}
func getBody(p *http.Request) ([]byte, error) {
body, err := ioutil.ReadAll(p.Body)
return body, err
}
func findBinPath(root string, bin string, defaultBin string) (string, error) {
if bin == "/" {
return "", errors.New("not found")
}
if strings.HasSuffix(bin, "/") {
bin = bin[:len(bin)-1]
}
if b, err := exec.LookPath(root + bin + "/" + defaultBin); err == nil && b != "" {
return b, nil
}
if b, err := exec.LookPath(root + bin); err == nil && b != "" {
return b, nil
}
pare, _ := path.Split(bin)
return findBinPath(root, pare, defaultBin)
}
func (h *HookServer) SetEventMapJson(file *[]byte) ([]string, error) {
if err := json.Unmarshal(*file, &h.EventMap); err != nil {
return nil, err
}
m := make([]string, 0, len(h.EventMap))
for k, _ := range h.EventMap {
h.EventMap[k].Compile(k)
m = append(m, k)
}
return m, nil
}