Scp Go Reference Documentation

Scp

Current Version: 9.5.0.79

An API for SCP over SSH. (SCP is the Secure Copy Protocol.) It is for transferring files or directory trees to or from remote servers. SCP is a simpler protocol than SFTP, and thus the functionality is more limited. However, SCP does not require that an SSH server support the SFTP subsystem. In cases where a server does not allow for SFTP, then SCP is a good choice for file transfer.

Object Creation

scp := chilkat.NewScp()
...
scp.DisposeScp()

Properties

AbortCurrent
func (scp *Scp) AbortCurrent() bool
func (scp *Scp) SetAbortCurrent(b bool)
Introduced in version 9.5.0.58

When set to true, causes the currently running method to abort. Methods that always finish quickly (i.e.have no length file operations or network communications) are not affected. If no method is running, then this property is automatically reset to false when the next method is called. When the abort occurs, this property is reset to false. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)

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DebugLogFilePath
func (scp *Scp) DebugLogFilePath() string
func (scp *Scp) SetDebugLogFilePath(s string)

If set to a file path, causes each Chilkat method or property call to automatically append it's LastErrorText to the specified log file. The information is appended such that if a hang or crash occurs, it is possible to see the context in which the problem occurred, as well as a history of all Chilkat calls up to the point of the problem. The VerboseLogging property can be set to provide more detailed information.

This property is typically used for debugging the rare cases where a Chilkat method call hangs or generates an exception that halts program execution (i.e. crashes). A hang or crash should generally never happen. The typical causes of a hang are:

  1. a timeout related property was set to 0 to explicitly indicate that an infinite timeout is desired,
  2. the hang is actually a hang within an event callback (i.e. it is a hang within the application code), or
  3. there is an internal problem (bug) in the Chilkat code that causes the hang.

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LastErrorHtml
func (scp *Scp) LastErrorHtml() string

Provides information in HTML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorText
func (scp *Scp) LastErrorText() string

Provides information in plain-text format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastErrorXml
func (scp *Scp) LastErrorXml() string

Provides information in XML format about the last method/property called. If a method call returns a value indicating failure, or behaves unexpectedly, examine this property to get more information.

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LastMethodSuccess
func (scp *Scp) LastMethodSuccess() bool
func (scp *Scp) SetLastMethodSuccess(b bool)
Introduced in version 9.5.0.52

Indicate whether the last method call succeeded or failed. A value of true indicates success, a value of false indicates failure. This property is automatically set for method calls. It is not modified by property accesses. The property is automatically set to indicate success for the following types of method calls:

  • Any method that returns a string.
  • Any method returning a Chilkat object, binary bytes, or a date/time.
  • Any method returning a standard boolean status value where success = true and failure = false.
  • Any method returning an integer where failure is defined by a return value less than zero.

Note: Methods that do not fit the above requirements will always set this property equal to true. For example, a method that returns no value (such as a "void" in C++) will technically always succeed.

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SendEnv
func (scp *Scp) SendEnv() string
func (scp *Scp) SetSendEnv(s string)
Introduced in version 9.5.0.79

A JSON string specifying environment variables that are to be set for each SCP upload or download. For example:

{
    "LCS_PASSWORD": "myPassword",
    "SOME_ENV_VAR": "some_value",
...
}

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SyncedFiles
func (scp *Scp) SyncedFiles() string
func (scp *Scp) SetSyncedFiles(s string)
Introduced in version 9.5.0.51

The paths of the files uploaded or downloaded in the last call to SyncUploadTree or SyncDownloadTree. The paths are listed one per line. In both cases (for upload and download) each line contains the full local file path (not the remote path).

More Information and Examples
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SyncMustMatch
func (scp *Scp) SyncMustMatch() string
func (scp *Scp) SetSyncMustMatch(s string)
Introduced in version 9.5.0.51

Can contain a wildcarded list of filename patterns separated by semicolons. For example, "*.xml; *.txt; *.csv". If set, the SyncTreeUpload and SyncTreeDownload methods will only transfer files having a filename that matches any one of these patterns.

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SyncMustMatchDir
func (scp *Scp) SyncMustMatchDir() string
func (scp *Scp) SetSyncMustMatchDir(s string)
Introduced in version 9.5.0.58

Can contain a wildcarded list of directory name patterns separated by semicolons. For example, "a*; b*; c*". If set, the SyncTreeUpload and SyncTreeDownload methods will only traverse into a directory that matches any one of these patterns.

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SyncMustNotMatch
func (scp *Scp) SyncMustNotMatch() string
func (scp *Scp) SetSyncMustNotMatch(s string)
Introduced in version 9.5.0.51

Can contain a wildcarded list of filename patterns separated by semicolons. For example, "*.xml; *.txt; *.csv". If set, the SyncTreeUpload and SyncTreeDownload methods will not transfer files having a filename that matches any one of these patterns.

More Information and Examples
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SyncMustNotMatchDir
func (scp *Scp) SyncMustNotMatchDir() string
func (scp *Scp) SetSyncMustNotMatchDir(s string)
Introduced in version 9.5.0.58

Can contain a wildcarded list of directory name patterns separated by semicolons. For example, "a*; b*; c*". If set, the SyncTreeUpload and SyncTreeDownload methods will not traverse into a directory that matches any one of these patterns.

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UncommonOptions
func (scp *Scp) UncommonOptions() string
func (scp *Scp) SetUncommonOptions(s string)
Introduced in version 9.5.0.77

This is a catch-all property to be used for uncommon needs. The default value is the empty string.

As of v9.5.0.77, there is only one uncommon option:

  • FilenameOnly Set this property to the keyword "FilenameOnly" if only the filename should be used in the "scp -t" command. (LANCOM routers using SCP seem to need it.)

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UnixPermOverride
func (scp *Scp) UnixPermOverride() string
func (scp *Scp) SetUnixPermOverride(s string)
Introduced in version 9.5.0.77

When Chilkat uploads a file by SCP, the UNIX permissions of the remote file are set based on the permissions of the local file being uploaded. Usually this is OK, but in some cases the access permissions of the local file are not what is wanted for the remote file. This property can be set to an octal permissions string, such as "0644", to force the remote file permissions to this value.

The default value of this property is the empty string (remote files permissions mirror the permissions of the local file being uploaded).

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VerboseLogging
func (scp *Scp) VerboseLogging() bool
func (scp *Scp) SetVerboseLogging(b bool)

If set to true, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is false. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.

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Version
func (scp *Scp) Version() string

Version of the component/library, such as "9.5.0.63"

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Methods

DownloadBd
func (scp *Scp) DownloadBd(remotePath string, bd *BinData) bool
Introduced in version 9.5.0.77

Downloads a binary file from the SSH server and appends to the contents of bd.

Returns true for success, false for failure.

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DownloadBdAsync (1)
func (scp *Scp) DownloadBdAsync(remotePath string, bd *BinData) *Task
Introduced in version 9.5.0.77

Creates an asynchronous task to call the DownloadBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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DownloadBinary
func (scp *Scp) DownloadBinary(remotePath string) []byte
Introduced in version 9.5.0.51

Downloads a binary file from the SSH server and returns the contents.

Returns nil on failure

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DownloadBinaryAsync (1)
func (scp *Scp) DownloadBinaryAsync(remotePath string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the DownloadBinary method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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DownloadBinaryEncoded
func (scp *Scp) DownloadBinaryEncoded(remotePath string, encoding string) *string
Introduced in version 9.5.0.51

Downloads a file from the SSH server returns the contents in an encoded string (using an encoding such as base64).

Returns nil on failure

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DownloadBinaryEncodedAsync (1)
func (scp *Scp) DownloadBinaryEncodedAsync(remotePath string, encoding string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the DownloadBinaryEncoded method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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DownloadFile
func (scp *Scp) DownloadFile(remotePath string, localPath string) bool
Introduced in version 9.5.0.51

Downloads a file from the remote SSH server to the local filesystem.

Returns true for success, false for failure.

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DownloadFileAsync (1)
func (scp *Scp) DownloadFileAsync(remotePath string, localPath string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the DownloadFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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DownloadString
func (scp *Scp) DownloadString(remotePath string, charset string) *string
Introduced in version 9.5.0.51

Downloads a text file from the SSH server and returns the contents as a string.

Returns nil on failure

More Information and Examples
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DownloadStringAsync (1)
func (scp *Scp) DownloadStringAsync(remotePath string, charset string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the DownloadString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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SaveLastError
func (scp *Scp) SaveLastError(path string) bool

Saves the last-error information (the contents of LastErrorXml) to an XML formatted file.

Returns true for success, false for failure.

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SyncTreeDownload
func (scp *Scp) SyncTreeDownload(remoteRoot string, localRoot string, mode int, bRecurse bool) bool
Introduced in version 9.5.0.51

Downloads files from the SSH server to a local directory tree. Synchronization modes include:

mode=0: Download all files
mode=1: Download all files that do not exist on the local filesystem.
mode=2: Download newer or non-existant files.
mode=3: Download only newer files. If a file does not already exist on the local filesystem, it is not downloaded from the server.
mode=5: Download only missing files or files with size differences.
mode=6: Same as mode 5, but also download newer files.

Returns true for success, false for failure.

More Information and Examples
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SyncTreeDownloadAsync (1)
func (scp *Scp) SyncTreeDownloadAsync(remoteRoot string, localRoot string, mode int, bRecurse bool) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the SyncTreeDownload method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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SyncTreeUpload
func (scp *Scp) SyncTreeUpload(localBaseDir string, remoteBaseDir string, mode int, bRecurse bool) bool
Introduced in version 9.5.0.51

Uploads a directory tree from the local filesystem to the SSH server. Synchronization modes include:

mode=0: Upload all files
mode=1: Upload all files that do not exist on the FTP server.
mode=2: Upload newer or non-existant files.
mode=3: Upload only newer files. If a file does not already exist on the FTP server, it is not uploaded.
mode=4: transfer missing files or files with size differences.
mode=5: same as mode 4, but also newer files.

Returns true for success, false for failure.

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SyncTreeUploadAsync (1)
func (scp *Scp) SyncTreeUploadAsync(localBaseDir string, remoteBaseDir string, mode int, bRecurse bool) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the SyncTreeUpload method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UploadBd
func (scp *Scp) UploadBd(remotePath string, bd *BinData) bool
Introduced in version 9.5.0.77

Uploads the contents of bd to a file on the SSH server.

Returns true for success, false for failure.

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UploadBdAsync (1)
func (scp *Scp) UploadBdAsync(remotePath string, bd *BinData) *Task
Introduced in version 9.5.0.77

Creates an asynchronous task to call the UploadBd method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UploadBinary
func (scp *Scp) UploadBinary(remotePath string, binData []byte) bool
Introduced in version 9.5.0.51

Uploads binary data to a file on the SSH server.

Returns true for success, false for failure.

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UploadBinaryAsync (1)
func (scp *Scp) UploadBinaryAsync(remotePath string, binData []byte) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the UploadBinary method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UploadBinaryEncoded
func (scp *Scp) UploadBinaryEncoded(remotePath string, encodedData string, encoding string) bool
Introduced in version 9.5.0.51

Uploads the binary data to a file on the remote SSH server. The binary data is passed in encoded string representation (such as base64, or hex).

Returns true for success, false for failure.

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UploadBinaryEncodedAsync (1)
func (scp *Scp) UploadBinaryEncodedAsync(remotePath string, encodedData string, encoding string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the UploadBinaryEncoded method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UploadFile
func (scp *Scp) UploadFile(localPath string, remotePath string) bool
Introduced in version 9.5.0.51

Uploads a file from the local filesystem to the remote SSH server.

Returns true for success, false for failure.

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UploadFileAsync (1)
func (scp *Scp) UploadFileAsync(localPath string, remotePath string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the UploadFile method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UploadString
func (scp *Scp) UploadString(remotePath string, textData string, charset string) bool
Introduced in version 9.5.0.51

Uploads the contents of a string to a file on the remote SSH server.

Returns true for success, false for failure.

More Information and Examples
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UploadStringAsync (1)
func (scp *Scp) UploadStringAsync(remotePath string, textData string, charset string) *Task
Introduced in version 9.5.0.51

Creates an asynchronous task to call the UploadString method with the arguments provided. (Async methods are available starting in Chilkat v9.5.0.52.)

Returns nil on failure

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UseSsh
func (scp *Scp) UseSsh(sshConnection *Ssh) bool
Introduced in version 9.5.0.51

Uses the SSH connection of sshConnection for the SCP transfers. All of the connection and socket related properties, proxy properites, timeout properties, session log, etc. set on the SSH object apply to the SCP methods (because internally it is the SSH object that is used to do the work of the file transfers).

Note: There is no UnlockComponent method in the SCP class because it is the SSH object that must be unlocked. When the SSH object is not unlocked, this method will return false to indicate failure.

Returns true for success, false for failure.

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