// Authorize user u to execute query q on database.
// database can be "" for queries that do not require a database.
// If no user is provided it will return an error unless the query's first statement is to create
// a root user.
func (q *QueryExecutor) Authorize(u *meta.UserInfo, query *influxql.Query, database string) error {
// Special case if no users exist.
if n := q.MetaClient.UserCount(); n == 0 {
// Ensure there is at least one statement.
if len(query.Statements) > 0 {
// First statement in the query must create a user with admin privilege.
cu, ok := query.Statements[0].(*influxql.CreateUserStatement)
if ok && cu.Admin == true {
return nil
}
}
return NewErrAuthorize(q, query, "", database, "create admin user first or disable authentication")
}
if u == nil {
return NewErrAuthorize(q, query, "", database, "no user provided")
}
// Admin privilege allows the user to execute all statements.
if u.Admin {
return nil
}
// Check each statement in the query.
for _, stmt := range query.Statements {
// Get the privileges required to execute the statement.
privs := stmt.RequiredPrivileges()
// Make sure the user has the privileges required to execute
// each statement.
for _, p := range privs {
if p.Admin {
// Admin privilege already checked so statement requiring admin
// privilege cannot be run.
msg := fmt.Sprintf("statement '%s', requires admin privilege", stmt)
return NewErrAuthorize(q, query, u.Name, database, msg)
}
// Use the db name specified by the statement or the db
// name passed by the caller if one wasn't specified by
// the statement.
db := p.Name
if db == "" {
db = database
}
if !u.Authorize(p.Privilege, db) {
msg := fmt.Sprintf("statement '%s', requires %s on %s", stmt, p.Privilege.String(), db)
return NewErrAuthorize(q, query, u.Name, database, msg)
}
}
}
return nil
}
// serveWrite receives incoming series data in line protocol format and writes it to the database.
func (h *Handler) serveWrite(w http.ResponseWriter, r *http.Request, user *meta.UserInfo) {
h.statMap.Add(statWriteRequest, 1)
defer func(start time.Time) {
h.statMap.Add(statWriteRequestDuration, time.Since(start).Nanoseconds())
}(time.Now())
database := r.FormValue("db")
if database == "" {
resultError(w, influxql.Result{Err: fmt.Errorf("database is required")}, http.StatusBadRequest)
return
}
if di, err := h.MetaClient.Database(database); err != nil {
resultError(w, influxql.Result{Err: fmt.Errorf("metastore database error: %s", err)}, http.StatusInternalServerError)
return
} else if di == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("database not found: %q", database)}, http.StatusNotFound)
return
}
if h.requireAuthentication && user == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("user is required to write to database %q", database)}, http.StatusUnauthorized)
return
}
if h.requireAuthentication && !user.Authorize(influxql.WritePrivilege, database) {
resultError(w, influxql.Result{Err: fmt.Errorf("%q user is not authorized to write to database %q", user.Name, database)}, http.StatusUnauthorized)
return
}
// Handle gzip decoding of the body
body := r.Body
if r.Header.Get("Content-encoding") == "gzip" {
b, err := gzip.NewReader(r.Body)
if err != nil {
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
defer b.Close()
body = b
}
var bs []byte
if clStr := r.Header.Get("Content-Length"); clStr != "" {
if length, err := strconv.Atoi(clStr); err == nil {
// This will just be an initial hint for the gzip reader, as the
// bytes.Buffer will grow as needed when ReadFrom is called
bs = make([]byte, 0, length)
}
}
buf := bytes.NewBuffer(bs)
_, err := buf.ReadFrom(body)
if err != nil {
if h.WriteTrace {
h.Logger.Print("write handler unable to read bytes from request body")
}
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
h.statMap.Add(statWriteRequestBytesReceived, int64(buf.Len()))
if h.WriteTrace {
h.Logger.Printf("write body received by handler: %s", buf.Bytes())
}
points, parseError := models.ParsePointsWithPrecision(buf.Bytes(), time.Now().UTC(), r.FormValue("precision"))
// Not points parsed correctly so return the error now
if parseError != nil && len(points) == 0 {
if parseError.Error() == "EOF" {
w.WriteHeader(http.StatusOK)
return
}
resultError(w, influxql.Result{Err: parseError}, http.StatusBadRequest)
return
}
// Write points.
if err := h.PointsWriter.WritePoints(database, r.FormValue("rp"), models.ConsistencyLevelAny, points); influxdb.IsClientError(err) {
h.statMap.Add(statPointsWrittenFail, int64(len(points)))
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
} else if err != nil {
h.statMap.Add(statPointsWrittenFail, int64(len(points)))
resultError(w, influxql.Result{Err: err}, http.StatusInternalServerError)
return
} else if parseError != nil {
// We wrote some of the points
h.statMap.Add(statPointsWrittenOK, int64(len(points)))
// The other points failed to parse which means the client sent invalid line protocol. We return a 400
// response code as well as the lines that failed to parse.
resultError(w, influxql.Result{Err: fmt.Errorf("partial write:\n%v", parseError)}, http.StatusBadRequest)
return
}
h.statMap.Add(statPointsWrittenOK, int64(len(points)))
w.WriteHeader(http.StatusNoContent)
}
// serveWriteLine receives incoming series data in line protocol format and writes it to the database.
func (h *Handler) serveWriteLine(w http.ResponseWriter, r *http.Request, body []byte, user *meta.UserInfo) {
// Some clients may not set the content-type header appropriately and send JSON with a non-json
// content-type. If the body looks JSON, try to handle it as as JSON instead
if len(body) > 0 {
var i int
for {
// JSON requests must start w/ an opening bracket
if body[i] == '{' {
h.serveWriteJSON(w, r, body, user)
return
}
// check that the byte is in the standard ascii code range
if body[i] > 32 || i >= len(body)-1 {
break
}
i++
}
}
precision := r.FormValue("precision")
if precision == "" {
precision = "n"
}
points, parseError := models.ParsePointsWithPrecision(body, time.Now().UTC(), precision)
// Not points parsed correctly so return the error now
if parseError != nil && len(points) == 0 {
if parseError.Error() == "EOF" {
w.WriteHeader(http.StatusOK)
return
}
resultError(w, influxql.Result{Err: parseError}, http.StatusBadRequest)
return
}
database := r.FormValue("db")
if database == "" {
resultError(w, influxql.Result{Err: fmt.Errorf("database is required")}, http.StatusBadRequest)
return
}
if di, err := h.MetaClient.Database(database); err != nil {
resultError(w, influxql.Result{Err: fmt.Errorf("metastore database error: %s", err)}, http.StatusInternalServerError)
return
} else if di == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("database not found: %q", database)}, http.StatusNotFound)
return
}
if h.requireAuthentication && user == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("user is required to write to database %q", database)}, http.StatusUnauthorized)
return
}
if h.requireAuthentication && !user.Authorize(influxql.WritePrivilege, database) {
resultError(w, influxql.Result{Err: fmt.Errorf("%q user is not authorized to write to database %q", user.Name, database)}, http.StatusUnauthorized)
return
}
// Write points.
if err := h.PointsWriter.WritePoints(database, r.FormValue("rp"), models.ConsistencyLevelAny, points); influxdb.IsClientError(err) {
h.statMap.Add(statPointsWrittenFail, int64(len(points)))
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
} else if err != nil {
h.statMap.Add(statPointsWrittenFail, int64(len(points)))
resultError(w, influxql.Result{Err: err}, http.StatusInternalServerError)
return
} else if parseError != nil {
// We wrote some of the points
h.statMap.Add(statPointsWrittenOK, int64(len(points)))
// The other points failed to parse which means the client sent invalid line protocol. We return a 400
// response code as well as the lines that failed to parse.
resultError(w, influxql.Result{Err: fmt.Errorf("partial write:\n%v", parseError)}, http.StatusBadRequest)
return
}
h.statMap.Add(statPointsWrittenOK, int64(len(points)))
w.WriteHeader(http.StatusNoContent)
}
// serveWriteJSON receives incoming series data in JSON and writes it to the database.
func (h *Handler) serveWriteJSON(w http.ResponseWriter, r *http.Request, body []byte, user *meta.UserInfo) {
if !h.JSONWriteEnabled {
resultError(w, influxql.Result{Err: fmt.Errorf("JSON write protocol has been deprecated")}, http.StatusBadRequest)
return
}
var bp client.BatchPoints
var dec *json.Decoder
dec = json.NewDecoder(bytes.NewReader(body))
if err := dec.Decode(&bp); err != nil {
if err.Error() == "EOF" {
w.WriteHeader(http.StatusOK)
return
}
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
if bp.Database == "" {
resultError(w, influxql.Result{Err: fmt.Errorf("database is required")}, http.StatusBadRequest)
return
}
if di, err := h.MetaClient.Database(bp.Database); err != nil {
resultError(w, influxql.Result{Err: fmt.Errorf("metastore database error: %s", err)}, http.StatusInternalServerError)
return
} else if di == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("database not found: %q", bp.Database)}, http.StatusNotFound)
return
}
if h.requireAuthentication && user == nil {
resultError(w, influxql.Result{Err: fmt.Errorf("user is required to write to database %q", bp.Database)}, http.StatusUnauthorized)
return
}
if h.requireAuthentication && !user.Authorize(influxql.WritePrivilege, bp.Database) {
resultError(w, influxql.Result{Err: fmt.Errorf("%q user is not authorized to write to database %q", user.Name, bp.Database)}, http.StatusUnauthorized)
return
}
points, err := NormalizeBatchPoints(bp)
if err != nil {
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
return
}
// Convert the json batch struct to a points writer struct
if err := h.PointsWriter.WritePoints(bp.Database, bp.RetentionPolicy, models.ConsistencyLevelAny, points); err != nil {
h.statMap.Add(statPointsWrittenFail, int64(len(points)))
if influxdb.IsClientError(err) {
resultError(w, influxql.Result{Err: err}, http.StatusBadRequest)
} else {
resultError(w, influxql.Result{Err: err}, http.StatusInternalServerError)
}
return
}
h.statMap.Add(statPointsWrittenOK, int64(len(points)))
w.WriteHeader(http.StatusNoContent)
}