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improve FTP support

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- allow to disable active mode
- allow to disable SITE commands
- add optional support for calculating hash value of files
- add optional support for the non standard COMB command
This commit is contained in:
Nicola Murino
2020-12-24 18:48:06 +01:00
parent 5b1d8666b3
commit 1dce1eff48
15 changed files with 375 additions and 31 deletions
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25
ftpd/ftpd.go
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@@ -27,9 +27,10 @@ type Binding struct {
Address string `json:"address" mapstructure:"address"`
// The port used for serving requests
Port int `json:"port" mapstructure:"port"`
// apply the proxy configuration, if any, for this binding
// Apply the proxy configuration, if any, for this binding
ApplyProxyConfig bool `json:"apply_proxy_config" mapstructure:"apply_proxy_config"`
// set to 1 to require TLS for both data and control connection
// Set to 1 to require TLS for both data and control connection.
// Set to 2 to enable implicit TLS
TLSMode int `json:"tls_mode" mapstructure:"tls_mode"`
// External IP address to expose for passive connections.
ForcePassiveIP string `json:"force_passive_ip" mapstructure:"force_passive_ip"`
@@ -103,10 +104,26 @@ type Configuration struct {
CertificateKeyFile string `json:"certificate_key_file" mapstructure:"certificate_key_file"`
// Do not impose the port 20 for active data transfer. Enabling this option allows to run SFTPGo with less privilege
ActiveTransfersPortNon20 bool `json:"active_transfers_port_non_20" mapstructure:"active_transfers_port_non_20"`
// Port Range for data connections. Random if not specified
PassivePortRange PortRange `json:"passive_port_range" mapstructure:"passive_port_range"`
// Set to true to disable active FTP
DisableActiveMode bool `json:"disable_active_mode" mapstructure:"disable_active_mode"`
// Set to true to enable the FTP SITE command.
// We support chmod and symlink if SITE support is enabled
EnableSite bool `json:"enable_site" mapstructure:"enable_site"`
// Set to 1 to enable FTP commands that allow to calculate the hash value of files.
// These FTP commands will be enabled: HASH, XCRC, MD5/XMD5, XSHA/XSHA1, XSHA256, XSHA512.
// Please keep in mind that to calculate the hash we need to read the whole file, for
// remote backends this means downloading the file, for the encrypted backend this means
// decrypting the file
HASHSupport int `json:"hash_support" mapstructure:"hash_support"`
// Set to 1 to enable support for the non standard "COMB" FTP command.
// Combine is only supported for local filesystem, for cloud backends it has
// no advantage as it will download the partial files and will upload the
// combined one. Cloud backends natively support multipart uploads.
CombineSupport int `json:"combine_support" mapstructure:"combine_support"`
// Deprecated: please use Bindings
TLSMode int `json:"tls_mode" mapstructure:"tls_mode"`
// Port Range for data connections. Random if not specified
PassivePortRange PortRange `json:"passive_port_range" mapstructure:"passive_port_range"`
}
// ShouldBind returns true if there is at least a valid binding