mirror of https://github.com/minio/minio.git
292 lines
10 KiB
Go
292 lines
10 KiB
Go
// Copyright (c) 2015-2023 MinIO, Inc.
|
|
//
|
|
// This file is part of MinIO Object Storage stack
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Affero General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Affero General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Affero General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"crypto/subtle"
|
|
"io"
|
|
"net/http"
|
|
"net/url"
|
|
"time"
|
|
|
|
"github.com/klauspost/compress/gzhttp"
|
|
"github.com/lithammer/shortuuid/v4"
|
|
miniogo "github.com/minio/minio-go/v7"
|
|
"github.com/minio/minio-go/v7/pkg/credentials"
|
|
"github.com/minio/mux"
|
|
"github.com/minio/pkg/bucket/policy"
|
|
|
|
"github.com/minio/minio/internal/auth"
|
|
levent "github.com/minio/minio/internal/config/lambda/event"
|
|
xhttp "github.com/minio/minio/internal/http"
|
|
"github.com/minio/minio/internal/logger"
|
|
)
|
|
|
|
func getLambdaEventData(bucket, object string, cred auth.Credentials, r *http.Request) (levent.Event, error) {
|
|
host := globalLocalNodeName
|
|
secure := globalIsTLS
|
|
if globalMinioEndpointURL != nil {
|
|
host = globalMinioEndpointURL.Host
|
|
secure = globalMinioEndpointURL.Scheme == "https"
|
|
}
|
|
|
|
duration := time.Until(cred.Expiration)
|
|
if duration > time.Hour || duration < time.Hour {
|
|
// Always limit to 1 hour.
|
|
duration = time.Hour
|
|
}
|
|
|
|
clnt, err := miniogo.New(host, &miniogo.Options{
|
|
Creds: credentials.NewStaticV4(cred.AccessKey, cred.SecretKey, cred.SessionToken),
|
|
Secure: secure,
|
|
Transport: globalRemoteTargetTransport,
|
|
Region: globalSite.Region,
|
|
})
|
|
if err != nil {
|
|
return levent.Event{}, err
|
|
}
|
|
|
|
reqParams := url.Values{}
|
|
if partNumberStr := r.Form.Get("partNumber"); partNumberStr != "" {
|
|
reqParams.Set("partNumber", partNumberStr)
|
|
}
|
|
for k := range supportedHeadGetReqParams {
|
|
if v := r.Form.Get(k); v != "" {
|
|
reqParams.Set(k, v)
|
|
}
|
|
}
|
|
extraHeaders := http.Header{}
|
|
if rng := r.Header.Get(xhttp.Range); rng != "" {
|
|
extraHeaders.Set(xhttp.Range, r.Header.Get(xhttp.Range))
|
|
}
|
|
|
|
u, err := clnt.PresignHeader(r.Context(), http.MethodGet, bucket, object, duration, reqParams, extraHeaders)
|
|
if err != nil {
|
|
return levent.Event{}, err
|
|
}
|
|
|
|
token, err := authenticateNode(cred.AccessKey, cred.SecretKey, u.RawQuery)
|
|
if err != nil {
|
|
return levent.Event{}, err
|
|
}
|
|
|
|
eventData := levent.Event{
|
|
GetObjectContext: &levent.GetObjectContext{
|
|
InputS3URL: u.String(),
|
|
OutputRoute: shortuuid.New(),
|
|
OutputToken: token,
|
|
},
|
|
UserRequest: levent.UserRequest{
|
|
URL: r.URL.String(),
|
|
Headers: r.Header.Clone(),
|
|
},
|
|
UserIdentity: levent.Identity{
|
|
Type: "IAMUser",
|
|
PrincipalID: cred.AccessKey,
|
|
AccessKeyID: cred.SecretKey,
|
|
},
|
|
}
|
|
return eventData, nil
|
|
}
|
|
|
|
var statusTextToCode = map[string]int{
|
|
"Continue": http.StatusContinue,
|
|
"Switching Protocols": http.StatusSwitchingProtocols,
|
|
"Processing": http.StatusProcessing,
|
|
"Early Hints": http.StatusEarlyHints,
|
|
"OK": http.StatusOK,
|
|
"Created": http.StatusCreated,
|
|
"Accepted": http.StatusAccepted,
|
|
"Non-Authoritative Information": http.StatusNonAuthoritativeInfo,
|
|
"No Content": http.StatusNoContent,
|
|
"Reset Content": http.StatusResetContent,
|
|
"Partial Content": http.StatusPartialContent,
|
|
"Multi-Status": http.StatusMultiStatus,
|
|
"Already Reported": http.StatusAlreadyReported,
|
|
"IM Used": http.StatusIMUsed,
|
|
"Multiple Choices": http.StatusMultipleChoices,
|
|
"Moved Permanently": http.StatusMovedPermanently,
|
|
"Found": http.StatusFound,
|
|
"See Other": http.StatusSeeOther,
|
|
"Not Modified": http.StatusNotModified,
|
|
"Use Proxy": http.StatusUseProxy,
|
|
"Temporary Redirect": http.StatusTemporaryRedirect,
|
|
"Permanent Redirect": http.StatusPermanentRedirect,
|
|
"Bad Request": http.StatusBadRequest,
|
|
"Unauthorized": http.StatusUnauthorized,
|
|
"Payment Required": http.StatusPaymentRequired,
|
|
"Forbidden": http.StatusForbidden,
|
|
"Not Found": http.StatusNotFound,
|
|
"Method Not Allowed": http.StatusMethodNotAllowed,
|
|
"Not Acceptable": http.StatusNotAcceptable,
|
|
"Proxy Authentication Required": http.StatusProxyAuthRequired,
|
|
"Request Timeout": http.StatusRequestTimeout,
|
|
"Conflict": http.StatusConflict,
|
|
"Gone": http.StatusGone,
|
|
"Length Required": http.StatusLengthRequired,
|
|
"Precondition Failed": http.StatusPreconditionFailed,
|
|
"Request Entity Too Large": http.StatusRequestEntityTooLarge,
|
|
"Request URI Too Long": http.StatusRequestURITooLong,
|
|
"Unsupported Media Type": http.StatusUnsupportedMediaType,
|
|
"Requested Range Not Satisfiable": http.StatusRequestedRangeNotSatisfiable,
|
|
"Expectation Failed": http.StatusExpectationFailed,
|
|
"I'm a teapot": http.StatusTeapot,
|
|
"Misdirected Request": http.StatusMisdirectedRequest,
|
|
"Unprocessable Entity": http.StatusUnprocessableEntity,
|
|
"Locked": http.StatusLocked,
|
|
"Failed Dependency": http.StatusFailedDependency,
|
|
"Too Early": http.StatusTooEarly,
|
|
"Upgrade Required": http.StatusUpgradeRequired,
|
|
"Precondition Required": http.StatusPreconditionRequired,
|
|
"Too Many Requests": http.StatusTooManyRequests,
|
|
"Request Header Fields Too Large": http.StatusRequestHeaderFieldsTooLarge,
|
|
"Unavailable For Legal Reasons": http.StatusUnavailableForLegalReasons,
|
|
"Internal Server Error": http.StatusInternalServerError,
|
|
"Not Implemented": http.StatusNotImplemented,
|
|
"Bad Gateway": http.StatusBadGateway,
|
|
"Service Unavailable": http.StatusServiceUnavailable,
|
|
"Gateway Timeout": http.StatusGatewayTimeout,
|
|
"HTTP Version Not Supported": http.StatusHTTPVersionNotSupported,
|
|
"Variant Also Negotiates": http.StatusVariantAlsoNegotiates,
|
|
"Insufficient Storage": http.StatusInsufficientStorage,
|
|
"Loop Detected": http.StatusLoopDetected,
|
|
"Not Extended": http.StatusNotExtended,
|
|
"Network Authentication Required": http.StatusNetworkAuthenticationRequired,
|
|
}
|
|
|
|
// StatusCode returns a HTTP Status code for the HTTP text. It returns -1
|
|
// if the text is unknown.
|
|
func StatusCode(text string) int {
|
|
if code, ok := statusTextToCode[text]; ok {
|
|
return code
|
|
}
|
|
return -1
|
|
}
|
|
|
|
func fwdHeadersToS3(h http.Header, w http.ResponseWriter) {
|
|
const trim = "x-amz-fwd-header-"
|
|
for k, v := range h {
|
|
if stringsHasPrefixFold(k, trim) {
|
|
w.Header()[k[len(trim):]] = v
|
|
}
|
|
}
|
|
}
|
|
|
|
func fwdStatusToAPIError(resp *http.Response) *APIError {
|
|
if status := resp.Header.Get(xhttp.AmzFwdStatus); status != "" && StatusCode(status) > -1 {
|
|
apiErr := &APIError{
|
|
HTTPStatusCode: StatusCode(status),
|
|
Description: resp.Header.Get(xhttp.AmzFwdErrorMessage),
|
|
Code: resp.Header.Get(xhttp.AmzFwdErrorCode),
|
|
}
|
|
if apiErr.HTTPStatusCode == http.StatusOK {
|
|
return nil
|
|
}
|
|
return apiErr
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// GetObjectLamdbaHandler - GET Object with transformed data via lambda functions
|
|
// ----------
|
|
// This implementation of the GET operation applies lambda functions and returns the
|
|
// response generated via the lambda functions. To use this API, you must have READ access
|
|
// to the object.
|
|
func (api objectAPIHandlers) GetObjectLambdaHandler(w http.ResponseWriter, r *http.Request) {
|
|
ctx := newContext(r, w, "GetObjectLambda")
|
|
|
|
defer logger.AuditLog(ctx, w, r, mustGetClaimsFromToken(r))
|
|
|
|
objectAPI := api.ObjectAPI()
|
|
if objectAPI == nil {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(ErrServerNotInitialized), r.URL)
|
|
return
|
|
}
|
|
|
|
vars := mux.Vars(r)
|
|
bucket := vars["bucket"]
|
|
object, err := unescapePath(vars["object"])
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
|
|
return
|
|
}
|
|
|
|
// Check for auth type to return S3 compatible error.
|
|
cred, _, s3Error := checkRequestAuthTypeCredential(ctx, r, policy.GetObjectAction)
|
|
if s3Error != ErrNone {
|
|
writeErrorResponse(ctx, w, errorCodes.ToAPIErr(s3Error), r.URL)
|
|
return
|
|
}
|
|
|
|
target, err := globalLambdaTargetList.Lookup(r.Form.Get("lambdaArn"))
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
|
|
return
|
|
}
|
|
|
|
eventData, err := getLambdaEventData(bucket, object, cred, r)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
|
|
return
|
|
}
|
|
|
|
resp, err := target.Send(eventData)
|
|
if err != nil {
|
|
writeErrorResponse(ctx, w, toAPIError(ctx, err), r.URL)
|
|
return
|
|
}
|
|
defer resp.Body.Close()
|
|
|
|
if eventData.GetObjectContext.OutputRoute != resp.Header.Get(xhttp.AmzRequestRoute) {
|
|
tokenErr := errorCodes.ToAPIErr(ErrInvalidRequest)
|
|
tokenErr.Description = "The request route included in the request is invalid"
|
|
writeErrorResponse(ctx, w, tokenErr, r.URL)
|
|
return
|
|
}
|
|
|
|
if subtle.ConstantTimeCompare([]byte(resp.Header.Get(xhttp.AmzRequestToken)), []byte(eventData.GetObjectContext.OutputToken)) != 1 {
|
|
tokenErr := errorCodes.ToAPIErr(ErrInvalidToken)
|
|
tokenErr.Description = "The request token included in the request is invalid"
|
|
writeErrorResponse(ctx, w, tokenErr, r.URL)
|
|
return
|
|
}
|
|
|
|
// Set all the relevant lambda forward headers if found.
|
|
fwdHeadersToS3(resp.Header, w)
|
|
|
|
if apiErr := fwdStatusToAPIError(resp); apiErr != nil {
|
|
writeErrorResponse(ctx, w, *apiErr, r.URL)
|
|
return
|
|
}
|
|
|
|
if resp.StatusCode != http.StatusOK {
|
|
writeErrorResponse(ctx, w, APIError{
|
|
Code: "LambdaFunctionError",
|
|
HTTPStatusCode: resp.StatusCode,
|
|
Description: "unexpected failure reported from lambda function",
|
|
}, r.URL)
|
|
return
|
|
}
|
|
|
|
if !globalAPIConfig.shouldGzipObjects() {
|
|
w.Header().Set(gzhttp.HeaderNoCompression, "true")
|
|
}
|
|
|
|
io.Copy(w, resp.Body)
|
|
}
|