Scp PureBasic Reference Documentation
Scp
Current Version: 10.1.2
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
obj.i = CkScp::ckCreate()
; Make sure to dispose of the object when finished like this:
CkScp::ckDispose(obj);
Properties
AbortCurrent
Declare setCkAbortCurrent(obj.i, value.i)
When set to 1, 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 0 when the next method is called. When the abort occurs, this property is reset to 0. Both synchronous and asynchronous method calls can be aborted. (A synchronous method call could be aborted by setting this property from a separate thread.)
topDebugLogFilePath
Declare setCkDebugLogFilePath(obj.i, value.s)
If set to a file path, this property logs the LastErrorText of each Chilkat method or property call to the specified file. This logging helps identify the context and history of Chilkat calls leading up to any crash or hang, aiding in debugging.
Enabling the VerboseLogging property provides more detailed information. This property is mainly used for debugging rare instances where a Chilkat method call causes a hang or crash, which should generally not happen.
Possible causes of hangs include:
- A timeout property set to 0, indicating an infinite timeout.
- A hang occurring within an event callback in the application code.
- An internal bug in the Chilkat code causing the hang.
LastErrorHtml
Provides HTML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastErrorText
Provides plain text information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
LastErrorXml
Provides XML-formatted information about the last called method or property. If a method call fails or behaves unexpectedly, check this property for details. Note that information is available regardless of the method call's success.
topLastMethodSuccess
Declare setCkLastMethodSuccess(obj.i, value.i)
Indicates the success or failure of the most recent method call: 1 means success, 0 means failure. This property remains unchanged by property setters or getters. This method is present to address challenges in checking for null or Nothing returns in certain programming languages.
topSendEnv
Declare setCkSendEnv(obj.i, value.s)
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",
...
}
SyncedFiles
Declare setCkSyncedFiles(obj.i, value.s)
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).
SyncMustMatch
Declare setCkSyncMustMatch(obj.i, value.s)
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.
SyncMustMatchDir
Declare setCkSyncMustMatchDir(obj.i, value.s)
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.
topSyncMustNotMatch
Declare setCkSyncMustNotMatch(obj.i, value.s)
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.
SyncMustNotMatchDir
Declare setCkSyncMustNotMatchDir(obj.i, value.s)
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.
topUncommonOptions
Declare setCkUncommonOptions(obj.i, value.s)
This is a catch-all property to be used for uncommon needs. The default value is the empty string.
Can be set to a list of the following comma separated keywords:
- FilenameOnly - Introduced in v9.5.0.77. 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.)
- ProtectFromVpn - Introduced in v9.5.0.80. On Android systems, will bypass any VPN that may be installed or active.
UnixPermOverride
Declare setCkUnixPermOverride(obj.i, value.s)
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).
topVerboseLogging
Declare setCkVerboseLogging(obj.i, value.i)
If set to 1, then the contents of LastErrorText (or LastErrorXml, or LastErrorHtml) may contain more verbose information. The default value is 0. Verbose logging should only be used for debugging. The potentially large quantity of logged information may adversely affect peformance.
topVersion
Methods
DownloadBd
Downloads a binary file from the SSH server and appends to the contents of bd.
Returns 1 for success, 0 for failure.
topDownloadBdAsync (1)
Creates an asynchronous task to call the DownloadBd method with the arguments provided.
Returns 0 on failure
topDownloadBinaryEncoded
Downloads a file from the SSH server returns the contents in an encoded string (using an encoding such as base64).
Returns an empty string on failure. Use the LastMethodSuccess property to check for success.
DownloadBinaryEncodedAsync (1)
Creates an asynchronous task to call the DownloadBinaryEncoded method with the arguments provided.
Returns 0 on failure
topDownloadFile
Downloads a file from the remote SSH server to the local filesystem.
Returns 1 for success, 0 for failure.
DownloadFileAsync (1)
Creates an asynchronous task to call the DownloadFile method with the arguments provided.
Returns 0 on failure
topDownloadString
Downloads a text file from the SSH server and returns the contents as a string.
Returns an empty string on failure. Use the LastMethodSuccess property to check for success.
DownloadStringAsync (1)
Creates an asynchronous task to call the DownloadString method with the arguments provided.
Returns 0 on failure
topLoadTaskCaller
SyncTreeDownload
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 1 for success, 0 for failure.
SyncTreeDownloadAsync (1)
Creates an asynchronous task to call the SyncTreeDownload method with the arguments provided.
Returns 0 on failure
topSyncTreeUpload
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 1 for success, 0 for failure.
topSyncTreeUploadAsync (1)
Creates an asynchronous task to call the SyncTreeUpload method with the arguments provided.
Returns 0 on failure
topUploadBd
UploadBdAsync (1)
Creates an asynchronous task to call the UploadBd method with the arguments provided.
Returns 0 on failure
topUploadBinaryEncoded
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 1 for success, 0 for failure.
UploadBinaryEncodedAsync (1)
Creates an asynchronous task to call the UploadBinaryEncoded method with the arguments provided.
Returns 0 on failure
topUploadFile
Uploads a file from the local filesystem to the remote SSH server.
Returns 1 for success, 0 for failure.
UploadFileAsync (1)
Creates an asynchronous task to call the UploadFile method with the arguments provided.
Returns 0 on failure
topUploadString
Uploads the contents of a string to a file on the remote SSH server.
Returns 1 for success, 0 for failure.
UploadStringAsync (1)
Creates an asynchronous task to call the UploadString method with the arguments provided.
Returns 0 on failure
topUseSsh
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).
Returns 1 for success, 0 for failure.
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