/
hooks_router.go
148 lines (125 loc) · 6.28 KB
/
hooks_router.go
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package hooks
import (
"bytes"
"context"
"crypto/hmac"
"crypto/rsa"
"crypto/sha256"
"encoding/hex"
"io"
"net/http"
"strings"
"sync"
"github.com/gorilla/mux"
"github.com/rockbears/log"
"gopkg.in/spacemonkeygo/httpsig.v0"
"github.com/ovh/cds/engine/service"
"github.com/ovh/cds/sdk"
)
func (s *Service) initRouter(ctx context.Context) {
r := s.Router
r.Mux.UseEncodedPath()
r.Background = ctx
r.URL = s.Cfg.URL
r.SetHeaderFunc = service.DefaultHeaders
r.Middlewares = append(r.Middlewares, service.TracingMiddlewareFunc(s))
r.DefaultAuthMiddleware = service.CheckRequestSignatureMiddleware(s.ParsedAPIPublicKey)
//r.PostAuthMiddlewares nothing here
r.PostMiddlewares = append(r.PostMiddlewares, service.TracingPostMiddleware)
r.Handle("/admin/maintenance", nil, r.POST(s.postMaintenanceHandler))
r.Handle("/admin/repository/event/{vcsServer}/{repoName}/{uuid}/restart", nil, r.POST(s.postRestartRepositoryHookEventHandler))
r.Handle("/admin/repository/{vcsServer}/{repoName}", nil, r.DELETE(s.deleteRepositoryHandler))
r.Handle("/mon/version", nil, r.GET(service.VersionHandler, service.OverrideAuth(service.NoAuthMiddleware)))
r.Handle("/mon/status", nil, r.GET(s.statusHandler, service.OverrideAuth(service.NoAuthMiddleware)))
r.Handle("/mon/metrics", nil, r.GET(service.GetPrometheustMetricsHandler(s), service.OverrideAuth(service.NoAuthMiddleware)))
r.Handle("/mon/metrics/all", nil, r.GET(service.GetMetricsHandler, service.OverrideAuth(service.NoAuthMiddleware)))
r.Handle("/v2/webhook/repository", nil, r.POST(s.repositoryHooksHandler, service.OverrideAuth(CheckWebhookRequestSignatureMiddleware(s.WebHooksParsedPublicKey))))
r.Handle("/v2/webhook/repository/{vcsServerType}/{vcsServer}", nil, r.POST(s.repositoryWebHookHandler, service.OverrideAuth(s.CheckHmac256Signature("X-Hub-Signature-256"))))
r.Handle("/v2/repository", nil, r.GET(s.listRepositoriesHandler))
r.Handle("/v2/repository/event/callback", nil, r.POST(s.postRepositoryEventAnalysisCallbackHandler))
r.Handle("/v2/repository/event/{vcsServer}/{repoName}", nil, r.GET(s.listRepositoryEventHandler))
r.Handle("/v2/repository/event/{vcsServer}/{repoName}/{uuid}", nil, r.GET(s.getRepositoryEventHandler))
r.Handle("/v2/repository/key/{vcsServer}/{repoName}", nil, r.GET(s.getGenerateRepositoryWebHookSecretHandler))
r.Handle("/v2/workflow/manual", nil, r.POST(s.workflowManualHandler))
r.Handle("/webhook/{uuid}", nil, r.POST(s.webhookHandler, service.OverrideAuth(service.NoAuthMiddleware)), r.GET(s.webhookHandler, service.OverrideAuth(service.NoAuthMiddleware)), r.DELETE(s.webhookHandler, service.OverrideAuth(service.NoAuthMiddleware)), r.PUT(s.webhookHandler, service.OverrideAuth(service.NoAuthMiddleware)))
r.Handle("/task", nil, r.POST(s.postTaskHandler), r.GET(s.getTasksHandler))
r.Handle("/task/bulk/start", nil, r.GET(s.startTasksHandler))
r.Handle("/task/bulk/stop", nil, r.GET(s.stopTasksHandler))
r.Handle("/task/bulk", nil, r.POST(s.postTaskBulkHandler), r.DELETE(s.deleteTaskBulkHandler))
r.Handle("/task/execute", nil, r.POST(s.postAndExecuteTaskHandler))
r.Handle("/task/{uuid}", nil, r.GET(s.getTaskHandler), r.PUT(s.putTaskHandler), r.DELETE(s.deleteTaskHandler))
r.Handle("/task/{uuid}/start", nil, r.GET(s.startTaskHandler))
r.Handle("/task/{uuid}/stop", nil, r.GET(s.stopTaskHandler))
r.Handle("/task/{uuid}/execution", nil, r.GET(s.getTaskExecutionsHandler), r.DELETE(s.deleteAllTaskExecutionsHandler))
r.Handle("/task/{uuid}/execution/{timestamp}", nil, r.GET(s.getTaskExecutionHandler))
r.Handle("/task/{uuid}/execution/{timestamp}/stop", nil, r.POST(s.postStopTaskExecutionHandler))
}
func (s *Service) CheckHmac256Signature(headerName string) service.Middleware {
return func(ctx context.Context, w http.ResponseWriter, req *http.Request, rc *service.HandlerConfig) (context.Context, error) {
signHeaderValue := req.Header.Get(headerName)
if signHeaderValue == "" {
return ctx, sdk.NewErrorFrom(sdk.ErrUnauthorized, "unable to check signature")
}
vars := mux.Vars(req)
vcsType := vars["vcsServerType"]
vcsName := vars["vcsServer"]
defer req.Body.Close() // nolint
body, err := io.ReadAll(req.Body)
if err != nil {
log.ErrorWithStackTrace(ctx, err)
return ctx, sdk.NewErrorFrom(sdk.ErrUnauthorized, "unable to check signature")
}
eventName, err := s.extractEventFromHeader(ctx, vcsType, req.Header)
if err != nil {
log.ErrorWithStackTrace(ctx, err)
return ctx, sdk.NewErrorFrom(sdk.ErrUnauthorized, "unable to extract event from header")
}
repoName, _, err := s.extractDataFromPayload(req.Header, vcsType, body, eventName)
if err != nil {
log.ErrorWithStackTrace(ctx, err)
return ctx, sdk.NewErrorFrom(sdk.ErrNotFound, "unable to find repository")
}
newRequestBody := io.NopCloser(bytes.NewBuffer(body))
req.Body = newRequestBody
// Create a new HMAC by defining the hash type and the key (as byte array)
hookKey := sdk.GenerateRepositoryWebHookSecret(s.Cfg.RepositoryWebHookKey, vcsName, repoName)
h := hmac.New(sha256.New, []byte(hookKey))
h.Write(body)
sha := hex.EncodeToString(h.Sum(nil))
if strings.TrimPrefix(signHeaderValue, "sha256=") != sha {
log.Error(ctx, "signature mismatch: got %s, compute %s", signHeaderValue, sha)
return ctx, sdk.NewErrorFrom(sdk.ErrUnauthorized, "wrong signature")
}
return ctx, nil
}
}
type webhookHttpVerifier struct {
sync.Mutex
pubKey *rsa.PublicKey
}
func (v *webhookHttpVerifier) SetKey(pubKey *rsa.PublicKey) {
v.Lock()
defer v.Unlock()
v.pubKey = pubKey
}
func (v *webhookHttpVerifier) GetKey(_ string) interface{} {
v.Lock()
defer v.Unlock()
return v.pubKey
}
var (
webhookHTTPVerifier *webhookHttpVerifier
)
func CheckWebhookRequestSignatureMiddleware(pubKey *rsa.PublicKey) service.Middleware {
webhookHTTPVerifier = new(webhookHttpVerifier)
webhookHTTPVerifier.SetKey(pubKey)
verifier := httpsig.NewVerifier(webhookHTTPVerifier)
verifier.SetRequiredHeaders([]string{"(request-target)", "host", "date", sdk.SignHeaderVCSType, sdk.SignHeaderVCSName, sdk.SignHeaderRepoName, sdk.SignHeaderEventName})
return func(ctx context.Context, w http.ResponseWriter, req *http.Request, rc *service.HandlerConfig) (context.Context, error) {
if err := verifier.Verify(req); err != nil {
return ctx, sdk.NewError(sdk.ErrUnauthorized, err)
}
log.Debug(ctx, "Request has been successfully verified")
return ctx, nil
}
}