/
http_servers.go
204 lines (184 loc) · 5.46 KB
/
http_servers.go
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package facades
import (
"bufio"
"errors"
"github.com/h2non/filetype"
"github.com/yaklang/yaklang/common/log"
"github.com/yaklang/yaklang/common/utils"
"github.com/yaklang/yaklang/common/utils/lowhttp"
"net"
"time"
)
const defaultHTTPFallback = "HTTP/1.1 200 OK\r\nConnection: close\r\nContent-Length: 0\r\n\r\n\r\n\r\n"
// var HttpRoutes sync.Map
type HttpResourceType string
const (
FileResponseHeader = `HTTP/1.1 200 OK
Connection: close
Accept-Ranges: bytes
Content-Encoding: identity
Content-Type: application/octet-stream
Content-Length: 0
`
BodyResponseHeader = `HTTP/1.1 200 OK
Connection: close
Accept-Ranges: bytes
Content-Encoding: identity
Content-Length: 0
`
)
const (
HttpResourceType_File HttpResourceType = "file"
HttpResourceType_Body HttpResourceType = "body"
HttpResourceType_Raw HttpResourceType = "raw"
)
type HttpResource struct {
//response func(req *http.Request, c net.Conn) error
resource interface{}
responseType HttpResourceType
disableNotify bool
}
func NewHttpRawResource(data []byte) *HttpResource {
return &HttpResource{
responseType: HttpResourceType_Raw,
resource: data,
}
}
func NewHttpFileResource(data []byte) *HttpResource {
return &HttpResource{
responseType: HttpResourceType_File,
resource: data,
}
}
func (f *FacadeServer) SetRawResourceEx(pattern string, resource []byte, disableNotify bool) {
f.SaveHttpRoute(pattern, &HttpResource{resource: resource, responseType: HttpResourceType_Raw, disableNotify: disableNotify})
}
func (f *FacadeServer) RemoveHTTPResource(pattern string) {
f.httpMux.Lock()
f.httpResource.DeleteResource(pattern)
f.httpMux.Unlock()
}
func (f *FacadeServer) SetResource(protocol string, name string, token string, resource any) error {
switch protocol {
case "rmi":
res, ok := resource.([]byte)
if ok {
f.rmiResourceAddrs.SetResource(token, res, name)
} else {
return errors.New("expect bytes type")
}
case "ldap":
res, ok := resource.(map[string]any)
if ok {
f.ldapResourceAddrs.SetResource(token, res, name)
} else {
return errors.New("expect map type")
}
case "http":
res, ok := resource.([]byte)
if ok {
f.httpResource.SetResource(token, NewHttpRawResource(res), name)
} else {
return errors.New("expect bytes type")
}
}
return nil
}
func (f *FacadeServer) SetHttpRawResource(pattern string, resource []byte) {
f.SaveHttpRoute(pattern, &HttpResource{resource: resource, responseType: HttpResourceType_File})
}
// 如果路由已经存在,则覆盖原有的路由
func (f *FacadeServer) SaveHttpRoute(pattern string, resource *HttpResource) {
f.httpMux.Lock()
f.httpResource.SetResource(pattern, resource, "")
f.httpMux.Unlock()
}
func (f *FacadeServer) getHTTPHandler(isHttps bool) FacadeConnectionHandler {
return func(peekConn *utils.BufferedPeekableConn) error {
var c net.Conn = peekConn
c.SetDeadline(time.Now().Add(3 * time.Second))
log.Infof("start to read http request from %s", c.RemoteAddr())
req, err := utils.ReadHTTPRequestFromBufioReader(bufio.NewReader(c))
if err != nil {
log.Errorf("read http request from conn[%s] failed", c.RemoteAddr())
return err
}
log.Infof("request is received from %s", c.RemoteAddr())
reqRaw, err := utils.HttpDumpWithBody(req, true)
if err != nil {
log.Errorf("dump http request failed: %s", err)
return err
}
//originToken := req.RequestURI
token := req.RequestURI
//for strings.HasPrefix(token, "/") {
// token = token[1:]
//}
var msgType string
if isHttps {
msgType = "https"
} else {
msgType = "http"
}
// TODO: has multi read map risk
for k, v := range f.httpResource.Resources {
pattern := k
response := v.Resource
if utils.MatchAllOfGlob(pattern, token) && response != nil {
switch response.responseType {
case HttpResourceType_Raw:
responseRaw := utils.InterfaceToBytes(response.resource)
rsp, _, _ := lowhttp.FixHTTPResponse(responseRaw)
if rsp != nil {
responseRaw = rsp
}
c.Write(rsp)
c.Close()
if !response.disableNotify {
f.triggerNotificationEx(msgType, peekConn.Conn, token, reqRaw, token)
}
return nil
case HttpResourceType_Body:
responseBody := utils.InterfaceToBytes(response.resource)
var mimeType = "text/html"
t, _ := filetype.Match(responseBody)
if t.Extension != "" {
mimeType = t.MIME.Value
}
raw := lowhttp.ReplaceHTTPPacketBody(lowhttp.ReplaceMIMEType([]byte(BodyResponseHeader), mimeType), responseBody, false)
fixed, _, _ := lowhttp.FixHTTPResponse(raw)
if fixed != nil {
raw = fixed
}
c.Write(fixed)
c.Close()
if !response.disableNotify {
f.triggerNotificationEx(msgType, peekConn.Conn, token, reqRaw, token)
}
return nil
case HttpResourceType_File:
resource := utils.InterfaceToBytes(response.resource)
respb := append([]byte(FileResponseHeader), resource...)
resp, body, err := lowhttp.FixHTTPResponse(respb)
if err != nil {
log.Error("parse get request error")
return nil
}
res := append(resp, body...)
c.SetDeadline(time.Now().Add(3 * time.Second))
c.Write(res)
c.Close()
if !response.disableNotify {
f.triggerNotificationEx(msgType, peekConn.GetOriginConn(), token, reqRaw, token)
}
return nil
}
}
}
f.triggerNotificationEx(msgType, peekConn.GetOriginConn(), token, reqRaw, "<empty>")
c.SetDeadline(time.Now().Add(3 * time.Second))
c.Write([]byte(defaultHTTPFallback))
c.Close()
return nil
}
}