seaweedfs/weed/s3api/s3api_object_copy_handlers.go

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package s3api
import (
"fmt"
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"github.com/chrislusf/seaweedfs/weed/glog"
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xhttp "github.com/chrislusf/seaweedfs/weed/s3api/http"
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"github.com/chrislusf/seaweedfs/weed/s3api/s3err"
weed_server "github.com/chrislusf/seaweedfs/weed/server"
"net/http"
"net/url"
"strconv"
"strings"
"time"
"github.com/chrislusf/seaweedfs/weed/util"
)
func (s3a *S3ApiServer) CopyObjectHandler(w http.ResponseWriter, r *http.Request) {
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dstBucket, dstObject := xhttp.GetBucketAndObject(r)
// Copy source path.
cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
if err != nil {
// Save unescaped string as is.
cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
}
srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
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glog.V(3).Infof("CopyObjectHandler %s %s => %s %s", srcBucket, srcObject, dstBucket, dstObject)
if (srcBucket == dstBucket && srcObject == dstObject || cpSrcPath == "") && isReplace(r) {
fullPath := util.FullPath(fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, dstBucket, dstObject))
dir, name := fullPath.DirAndName()
entry, err := s3a.getEntry(dir, name)
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
entry.Extended = weed_server.SaveAmzMetaData(r, entry.Extended, isReplace(r))
err = s3a.touch(dir, name, entry)
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
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writeSuccessResponseXML(w, r, CopyObjectResult{
ETag: fmt.Sprintf("%x", entry.Attributes.Md5),
LastModified: time.Now().UTC(),
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})
return
}
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
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srcPath := util.FullPath(fmt.Sprintf("%s/%s%s", s3a.option.BucketsPath, srcBucket, srcObject))
dir, name := srcPath.DirAndName()
_, err = s3a.getEntry(dir, name)
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
if srcBucket == dstBucket && srcObject == dstObject {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopyDest)
return
}
dstUrl := fmt.Sprintf("http://%s%s/%s%s?collection=%s",
s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, dstBucket, urlPathEscape(dstObject), dstBucket)
srcUrl := fmt.Sprintf("http://%s%s/%s%s",
s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, srcBucket, urlPathEscape(srcObject))
FEATURE: add JWT to HTTP endpoints of Filer and use them in S3 Client - one JWT for reading and one for writing, analogous to how the JWT between Master and Volume Server works - I did not implement IP `whiteList` parameter on the filer Additionally, because http_util.DownloadFile now sets the JWT, the `download` command should now work when `jwt.signing.read` is configured. By looking at the code, I think this case did not work before. ## Docs to be adjusted after a release Page `Amazon-S3-API`: ``` # Authentication with Filer You can use mTLS for the gRPC connection between S3-API-Proxy and the filer, as explained in [Security-Configuration](Security-Configuration) - controlled by the `grpc.*` configuration in `security.toml`. Starting with version XX, it is also possible to authenticate the HTTP operations between the S3-API-Proxy and the Filer (especially uploading new files). This is configured by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. With both configurations (gRPC and JWT), it is possible to have Filer and S3 communicate in fully authenticated fashion; so Filer will reject any unauthenticated communication. ``` Page `Security Overview`: ``` The following items are not covered, yet: - master server http REST services Starting with version XX, the Filer HTTP REST services can be secured with a JWT, by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. ... Before version XX: "weed filer -disableHttp", disable http operations, only gRPC operations are allowed. This works with "weed mount" by FUSE. It does **not work** with the [S3 Gateway](Amazon S3 API), as this does HTTP calls to the Filer. Starting with version XX: secured by JWT, by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. **This now works with the [S3 Gateway](Amazon S3 API).** ... # Securing Filer HTTP with JWT To enable JWT-based access control for the Filer, 1. generate `security.toml` file by `weed scaffold -config=security` 2. set `filer_jwt.signing.key` to a secret string - and optionally filer_jwt.signing.read.key` as well to a secret string 3. copy the same `security.toml` file to the filers and all S3 proxies. If `filer_jwt.signing.key` is configured: When sending upload/update/delete HTTP operations to a filer server, the request header `Authorization` should be the JWT string (`Authorization: Bearer [JwtToken]`). The operation is authorized after the filer validates the JWT with `filer_jwt.signing.key`. If `filer_jwt.signing.read.key` is configured: When sending GET or HEAD requests to a filer server, the request header `Authorization` should be the JWT string (`Authorization: Bearer [JwtToken]`). The operation is authorized after the filer validates the JWT with `filer_jwt.signing.read.key`. The S3 API Gateway reads the above JWT keys and sends authenticated HTTP requests to the filer. ``` Page `Security Configuration`: ``` (update scaffold file) ... [filer_jwt.signing] key = "blahblahblahblah" [filer_jwt.signing.read] key = "blahblahblahblah" ``` Resolves: #158
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_, _, resp, err := util.DownloadFile(srcUrl, s3a.maybeGetFilerJwtAuthorizationToken(false))
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
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defer util.CloseResponse(resp)
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
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etag, errCode := s3a.putToFiler(r, dstUrl, resp.Body)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, r, errCode)
return
}
setEtag(w, etag)
response := CopyObjectResult{
ETag: etag,
LastModified: time.Now().UTC(),
}
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writeSuccessResponseXML(w, r, response)
}
func pathToBucketAndObject(path string) (bucket, object string) {
path = strings.TrimPrefix(path, "/")
parts := strings.SplitN(path, "/", 2)
if len(parts) == 2 {
return parts[0], "/" + parts[1]
}
return parts[0], "/"
}
type CopyPartResult struct {
LastModified time.Time `xml:"LastModified"`
ETag string `xml:"ETag"`
}
func (s3a *S3ApiServer) CopyObjectPartHandler(w http.ResponseWriter, r *http.Request) {
// https://docs.aws.amazon.com/AmazonS3/latest/dev/CopyingObjctsUsingRESTMPUapi.html
// https://docs.aws.amazon.com/AmazonS3/latest/API/API_UploadPartCopy.html
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dstBucket, _ := xhttp.GetBucketAndObject(r)
// Copy source path.
cpSrcPath, err := url.QueryUnescape(r.Header.Get("X-Amz-Copy-Source"))
if err != nil {
// Save unescaped string as is.
cpSrcPath = r.Header.Get("X-Amz-Copy-Source")
}
srcBucket, srcObject := pathToBucketAndObject(cpSrcPath)
// If source object is empty or bucket is empty, reply back invalid copy source.
if srcObject == "" || srcBucket == "" {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
uploadID := r.URL.Query().Get("uploadId")
partIDString := r.URL.Query().Get("partNumber")
partID, err := strconv.Atoi(partIDString)
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidPart)
return
}
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glog.V(3).Infof("CopyObjectPartHandler %s %s => %s part %d", srcBucket, srcObject, dstBucket, partID)
// check partID with maximum part ID for multipart objects
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if partID > globalMaxPartID {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidMaxParts)
return
}
rangeHeader := r.Header.Get("x-amz-copy-source-range")
dstUrl := fmt.Sprintf("http://%s%s/%s/%04d.part?collection=%s",
s3a.option.Filer.ToHttpAddress(), s3a.genUploadsFolder(dstBucket), uploadID, partID, dstBucket)
srcUrl := fmt.Sprintf("http://%s%s/%s%s",
s3a.option.Filer.ToHttpAddress(), s3a.option.BucketsPath, srcBucket, urlPathEscape(srcObject))
FEATURE: add JWT to HTTP endpoints of Filer and use them in S3 Client - one JWT for reading and one for writing, analogous to how the JWT between Master and Volume Server works - I did not implement IP `whiteList` parameter on the filer Additionally, because http_util.DownloadFile now sets the JWT, the `download` command should now work when `jwt.signing.read` is configured. By looking at the code, I think this case did not work before. ## Docs to be adjusted after a release Page `Amazon-S3-API`: ``` # Authentication with Filer You can use mTLS for the gRPC connection between S3-API-Proxy and the filer, as explained in [Security-Configuration](Security-Configuration) - controlled by the `grpc.*` configuration in `security.toml`. Starting with version XX, it is also possible to authenticate the HTTP operations between the S3-API-Proxy and the Filer (especially uploading new files). This is configured by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. With both configurations (gRPC and JWT), it is possible to have Filer and S3 communicate in fully authenticated fashion; so Filer will reject any unauthenticated communication. ``` Page `Security Overview`: ``` The following items are not covered, yet: - master server http REST services Starting with version XX, the Filer HTTP REST services can be secured with a JWT, by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. ... Before version XX: "weed filer -disableHttp", disable http operations, only gRPC operations are allowed. This works with "weed mount" by FUSE. It does **not work** with the [S3 Gateway](Amazon S3 API), as this does HTTP calls to the Filer. Starting with version XX: secured by JWT, by setting `filer_jwt.signing.key` and `filer_jwt.signing.read.key` in `security.toml`. **This now works with the [S3 Gateway](Amazon S3 API).** ... # Securing Filer HTTP with JWT To enable JWT-based access control for the Filer, 1. generate `security.toml` file by `weed scaffold -config=security` 2. set `filer_jwt.signing.key` to a secret string - and optionally filer_jwt.signing.read.key` as well to a secret string 3. copy the same `security.toml` file to the filers and all S3 proxies. If `filer_jwt.signing.key` is configured: When sending upload/update/delete HTTP operations to a filer server, the request header `Authorization` should be the JWT string (`Authorization: Bearer [JwtToken]`). The operation is authorized after the filer validates the JWT with `filer_jwt.signing.key`. If `filer_jwt.signing.read.key` is configured: When sending GET or HEAD requests to a filer server, the request header `Authorization` should be the JWT string (`Authorization: Bearer [JwtToken]`). The operation is authorized after the filer validates the JWT with `filer_jwt.signing.read.key`. The S3 API Gateway reads the above JWT keys and sends authenticated HTTP requests to the filer. ``` Page `Security Configuration`: ``` (update scaffold file) ... [filer_jwt.signing] key = "blahblahblahblah" [filer_jwt.signing.read] key = "blahblahblahblah" ``` Resolves: #158
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dataReader, err := util.ReadUrlAsReaderCloser(srcUrl, s3a.maybeGetFilerJwtAuthorizationToken(false), rangeHeader)
if err != nil {
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s3err.WriteErrorResponse(w, r, s3err.ErrInvalidCopySource)
return
}
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defer dataReader.Close()
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glog.V(2).Infof("copy from %s to %s", srcUrl, dstUrl)
etag, errCode := s3a.putToFiler(r, dstUrl, dataReader)
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if errCode != s3err.ErrNone {
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s3err.WriteErrorResponse(w, r, errCode)
return
}
setEtag(w, etag)
response := CopyPartResult{
ETag: etag,
LastModified: time.Now().UTC(),
}
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writeSuccessResponseXML(w, r, response)
}
func isReplace(r *http.Request) bool {
return r.Header.Get("X-Amz-Metadata-Directive") == "REPLACE"
}