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add support for data transfer bandwidth limits

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with total limit or separate settings for uploads and downloads and
overrides based on the client's IP address.

Limits can be reset using the REST API

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino
2022-01-30 11:42:36 +01:00
parent aca71bff7a
commit 1df1225eed
55 changed files with 3573 additions and 643 deletions
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18
sftpd/scp.go
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@@ -212,11 +212,11 @@ func (c *scpCommand) getUploadFileData(sizeToRead int64, transfer *transfer) err
}
func (c *scpCommand) handleUploadFile(fs vfs.Fs, resolvedPath, filePath string, sizeToRead int64, isNewFile bool, fileSize int64, requestPath string) error {
quotaResult := c.connection.HasSpace(isNewFile, false, requestPath)
if !quotaResult.HasSpace {
diskQuota, transferQuota := c.connection.HasSpace(isNewFile, false, requestPath)
if !diskQuota.HasSpace || !transferQuota.HasUploadSpace() {
err := fmt.Errorf("denying file write due to quota limits")
c.connection.Log(logger.LevelError, "error uploading file: %#v, err: %v", filePath, err)
c.sendErrorMessage(fs, err)
c.sendErrorMessage(nil, err)
return err
}
err := common.ExecutePreAction(c.connection.BaseConnection, common.OperationPreUpload, resolvedPath, requestPath,
@@ -228,7 +228,7 @@ func (c *scpCommand) handleUploadFile(fs vfs.Fs, resolvedPath, filePath string,
return err
}
maxWriteSize, _ := c.connection.GetMaxWriteSize(quotaResult, false, fileSize, fs.IsUploadResumeSupported())
maxWriteSize, _ := c.connection.GetMaxWriteSize(diskQuota, false, fileSize, fs.IsUploadResumeSupported())
file, w, cancelFn, err := fs.Create(filePath, 0)
if err != nil {
@@ -262,7 +262,7 @@ func (c *scpCommand) handleUploadFile(fs vfs.Fs, resolvedPath, filePath string,
vfs.SetPathPermissions(fs, filePath, c.connection.User.GetUID(), c.connection.User.GetGID())
baseTransfer := common.NewBaseTransfer(file, c.connection.BaseConnection, cancelFn, resolvedPath, filePath, requestPath,
common.TransferUpload, 0, initialSize, maxWriteSize, truncatedSize, isNewFile, fs)
common.TransferUpload, 0, initialSize, maxWriteSize, truncatedSize, isNewFile, fs, transferQuota)
t := newTransfer(baseTransfer, w, nil, nil)
return c.getUploadFileData(sizeToRead, t)
@@ -471,6 +471,12 @@ func (c *scpCommand) sendDownloadFileData(fs vfs.Fs, filePath string, stat os.Fi
func (c *scpCommand) handleDownload(filePath string) error {
c.connection.UpdateLastActivity()
transferQuota := c.connection.GetTransferQuota()
if !transferQuota.HasDownloadSpace() {
c.connection.Log(logger.LevelInfo, "denying file read due to quota limits")
c.sendErrorMessage(nil, c.connection.GetReadQuotaExceededError())
return c.connection.GetReadQuotaExceededError()
}
var err error
fs, err := c.connection.User.GetFilesystemForPath(filePath, c.connection.ID)
@@ -531,7 +537,7 @@ func (c *scpCommand) handleDownload(filePath string) error {
}
baseTransfer := common.NewBaseTransfer(file, c.connection.BaseConnection, cancelFn, p, p, filePath,
common.TransferDownload, 0, 0, 0, 0, false, fs)
common.TransferDownload, 0, 0, 0, 0, false, fs, transferQuota)
t := newTransfer(baseTransfer, nil, r, nil)
err = c.sendDownloadFileData(fs, p, stat, t)