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fix connection limits

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an SFTP client can start multiple transfers on a single connection

Signed-off-by: Nicola Murino <nicola.murino@gmail.com>
This commit is contained in:
Nicola Murino
2024-10-26 21:18:19 +02:00
parent c69fbe6bf9
commit ae1487d733
24 changed files with 707 additions and 7 deletions
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6
internal/sftpd/ssh_cmd.go
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@@ -246,11 +246,15 @@ func (c *sshCommand) handleHashCommands() error {
return nil
}
func (c *sshCommand) executeSystemCommand(command systemCommand) error {
func (c *sshCommand) executeSystemCommand(command systemCommand) error { //nolint:gocyclo
sshDestPath := c.getDestPath()
if !c.isLocalPath(sshDestPath) {
return c.sendErrorResponse(errUnsupportedConfig)
}
if err := common.Connections.IsNewTransferAllowed(c.connection.User.Username); err != nil {
err := fmt.Errorf("denying command due to transfer count limits")
return c.sendErrorResponse(err)
}
diskQuota, transferQuota := c.connection.HasSpace(true, false, command.quotaCheckPath)
if !diskQuota.HasSpace || !transferQuota.HasUploadSpace() || !transferQuota.HasDownloadSpace() {
return c.sendErrorResponse(common.ErrQuotaExceeded)