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Move error handling to main error handling; move matrix logic to its own file

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This commit is contained in:
Philipp Heckel 2022-06-15 20:36:49 -04:00
parent 91375b2e8e
commit ebbc2838ba
3 changed files with 68 additions and 43 deletions
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2
server/errors.go
View file

@ -51,7 +51,7 @@ var (
errHTTPBadRequestJSONInvalid = &errHTTP{40017, http.StatusBadRequest, "invalid request: request body must be message JSON", "https://ntfy.sh/docs/publish/#publish-as-json"}
errHTTPBadRequestActionsInvalid = &errHTTP{40018, http.StatusBadRequest, "invalid request: actions invalid", "https://ntfy.sh/docs/publish/#action-buttons"}
errHTTPBadRequestMatrixMessageInvalid = &errHTTP{40019, http.StatusBadRequest, "invalid request: Matrix JSON invalid", "https://ntfy.sh/docs/publish/#matrix-gateway"}
errHTTPBadRequestMatrixPushkeyBaseURLMismatch = &errHTTP{40020, http.StatusBadRequest, "invalid request: Push key must be prefixed with base URL", "https://ntfy.sh/docs/publish/#matrix-gateway"}
errHTTPBadRequestMatrixPushkeyBaseURLMismatch = &errHTTP{40020, http.StatusBadRequest, "invalid request: push key must be prefixed with base URL", "https://ntfy.sh/docs/publish/#matrix-gateway"}
errHTTPNotFound = &errHTTP{40401, http.StatusNotFound, "page not found", ""}
errHTTPUnauthorized = &errHTTP{40101, http.StatusUnauthorized, "unauthorized", "https://ntfy.sh/docs/publish/#authentication"}
errHTTPForbidden = &errHTTP{40301, http.StatusForbidden, "forbidden", "https://ntfy.sh/docs/publish/#authentication"}

36
server/server.go
View file

@ -259,6 +259,10 @@ func (s *Server) handle(w http.ResponseWriter, r *http.Request) {
}
return // Do not attempt to write to upgraded connection
}
if matrixErr, ok := err.(*errMatrix); ok {
writeMatrixError(w, r, v, matrixErr)
return
}
httpErr, ok := err.(*errHTTP)
if !ok {
httpErr = errHTTPInternalError
@ -506,8 +510,7 @@ func (s *Server) handlePublish(w http.ResponseWriter, r *http.Request, v *visito
func (s *Server) handlePublishMatrix(w http.ResponseWriter, r *http.Request, v *visitor) error {
_, err := s.handlePublishWithoutResponse(r, v)
if err != nil {
pushKey := r.Header.Get(matrixPushkeyHeader)
return writeMatrixError(w, pushKey, err)
return &errMatrix{pushKey: r.Header.Get(matrixPushKeyHeader), err: err}
}
return writeMatrixSuccess(w)
}
@ -1314,35 +1317,12 @@ func (s *Server) transformBodyJSON(next handleFunc) handleFunc {
func (s *Server) transformMatrixJSON(next handleFunc) handleFunc {
return func(w http.ResponseWriter, r *http.Request, v *visitor) error {
if s.config.BaseURL == "" {
return errHTTPInternalErrorMissingBaseURL
}
body, err := util.Peek(r.Body, s.config.MessageLimit)
newRequest, err := newRequestFromMatrixJSON(r, s.config.BaseURL, s.config.MessageLimit)
if err != nil {
return err
}
defer r.Body.Close()
var m matrixMessage
if err := json.NewDecoder(body).Decode(&m); err != nil {
return errHTTPBadRequestMatrixMessageInvalid
} else if m.Notification == nil || len(m.Notification.Devices) == 0 || m.Notification.Devices[0].PushKey == "" {
return errHTTPBadRequestMatrixMessageInvalid
}
pushKey := m.Notification.Devices[0].PushKey
if !strings.HasPrefix(pushKey, s.config.BaseURL+"/") {
return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixPushkeyBaseURLMismatch)
}
u, err := url.Parse(pushKey)
if err != nil {
return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
}
r.URL.Path = u.Path
r.URL.RawQuery = u.RawQuery
r.RequestURI = u.RequestURI()
r.Body = io.NopCloser(bytes.NewReader(body.PeekedBytes))
r.Header.Set(matrixPushkeyHeader, pushKey)
if err := next(w, r, v); err != nil {
return writeMatrixError(w, pushKey, errHTTPBadRequestMatrixMessageInvalid)
if err := next(w, newRequest, v); err != nil {
return &errMatrix{pushKey: newRequest.Header.Get(matrixPushKeyHeader), err: err}
}
return nil
}

73
server/server_matrix.go
View file

@ -1,14 +1,18 @@
package server
import (
"bytes"
"encoding/json"
"fmt"
"heckel.io/ntfy/log"
"heckel.io/ntfy/util"
"io"
"net/http"
"strings"
)
const (
matrixPushkeyHeader = "X-Matrix-Pushkey"
matrixPushKeyHeader = "X-Matrix-Pushkey"
)
type matrixMessage struct {
@ -27,16 +31,67 @@ type matrixResponse struct {
Rejected []string `json:"rejected"`
}
type errMatrix struct {
pushKey string
err error
}
func (e errMatrix) Error() string {
if e.err != nil {
return fmt.Sprintf("message with push key %s rejected: %s", e.pushKey, e.err.Error())
}
return fmt.Sprintf("message with push key %s rejected", e.pushKey)
}
func newRequestFromMatrixJSON(r *http.Request, baseURL string, messageLimit int) (*http.Request, error) {
if baseURL == "" {
return nil, errHTTPInternalErrorMissingBaseURL
}
body, err := util.Peek(r.Body, messageLimit)
if err != nil {
return nil, err
}
defer r.Body.Close()
var m matrixMessage
if err := json.NewDecoder(body).Decode(&m); err != nil {
return nil, errHTTPBadRequestMatrixMessageInvalid
} else if m.Notification == nil || len(m.Notification.Devices) == 0 || m.Notification.Devices[0].PushKey == "" {
return nil, errHTTPBadRequestMatrixMessageInvalid
}
pushKey := m.Notification.Devices[0].PushKey
if !strings.HasPrefix(pushKey, baseURL+"/") {
return nil, &errMatrix{pushKey: pushKey, err: errHTTPBadRequestMatrixPushkeyBaseURLMismatch}
}
newRequest, err := http.NewRequest(http.MethodPost, pushKey, io.NopCloser(bytes.NewReader(body.PeekedBytes)))
if err != nil {
return nil, &errMatrix{pushKey: pushKey, err: err}
}
newRequest.Header.Set(matrixPushKeyHeader, pushKey)
return newRequest, nil
}
func handleMatrixDiscovery(w http.ResponseWriter) error {
w.Header().Set("Content-Type", "application/json")
_, err := io.WriteString(w, `{"unifiedpush":{"gateway":"matrix"}}`+"\n")
return err
}
func writeMatrixError(w http.ResponseWriter, pushKey string, err error) error {
log.Debug("Matrix message with push key %s rejected: %s", pushKey, err.Error())
func writeMatrixError(w http.ResponseWriter, r *http.Request, v *visitor, err *errMatrix) error {
log.Debug("%s Matrix gateway error: %s", logHTTPPrefix(v, r), err.Error())
return writeMatrixResponse(w, err.pushKey)
}
func writeMatrixSuccess(w http.ResponseWriter) error {
return writeMatrixResponse(w, "")
}
func writeMatrixResponse(w http.ResponseWriter, rejectedPushKey string) error {
rejected := make([]string, 0)
if rejectedPushKey != "" {
rejected = append(rejected, rejectedPushKey)
}
response := &matrixResponse{
Rejected: []string{pushKey},
Rejected: rejected,
}
w.Header().Set("Content-Type", "application/json")
if err := json.NewEncoder(w).Encode(response); err != nil {
@ -44,13 +99,3 @@ func writeMatrixError(w http.ResponseWriter, pushKey string, err error) error {
}
return nil
}
func writeMatrixSuccess(w http.ResponseWriter) error {
response := &matrixResponse{
Rejected: make([]string, 0),
}
if err := json.NewEncoder(w).Encode(response); err != nil {
return err
}
return nil
}