Rexec Component

Properties   Methods   Events   Configuration Settings   Errors  

The Rexec component is used to execute commands on a remote UNIX machine using the rexec mechanism.

Syntax

TipwRexec

Remarks

The Rexec component allows remote execution of commands on UNIX hosts, or any other system with the rexec interface. Using the component is very simple. The destination is specified by the RemoteHost property, the login information is given by the RemoteUser and RemotePassword properties. Then call the Execute method with the Command to execute as a parameter. You can also set the Command property to the command that you would like to execute for identical results. Further input can be supplied to the command by assigning data to the Text parameter of the Send method, or via the Stdin property.

The output of the command is returned through the Stdout event. If an error happens on the protocol level, the error message can be found in the ErrorMessage property. Errors during command execution (the stderr stream) are given by the Stderr event.

To be able to successfully use the component, the remote host must be set up to allow execution of commands via rexec from the machine the component runs on.

Property List


The following is the full list of the properties of the component with short descriptions. Click on the links for further details.

BytesSentThe number of bytes actually sent after an assignment to Stdin.
CommandThe command to be sent to the remote host.
ConnectedShows whether the component is connected.
EoFIf True, the connection has closed, and there is no buffered data available.
EOLUsed to break the stdout data stream into chunks separated by its value.
ErrEOLUsed to break the stderr data stream into chunks separated by its value.
ErrorMessageThe error message returned when any of the steps prior to command execution fail.
FirewallA set of properties related to firewall access.
LocalHostThe name of the local host or user-assigned IP interface through which connections are initiated or accepted.
LocalPortThe TCP port in the local host where the component binds.
RemoteHostThe address of the remote host. Domain names are resolved to IP addresses.
RemotePasswordThe password of the user on the remote host.
RemotePortThe remote exec service port (default is 512).
RemoteUserThe id of the user on the remote host.
StderrReturns the standard error output (stderr) from the remote application.
StdinA string of data to be sent to the remote host while connected.
StdoutProvides the standard output (stdout) from the remote application.
TimeoutA timeout for the component.

Method List


The following is the full list of the methods of the component with short descriptions. Click on the links for further details.

ConfigSets or retrieves a configuration setting.
DisconnectDisconnect from the RemoteHost .
DoEventsProcesses events from the internal message queue.
ExecuteExecute a Command on the remote host.
InterruptInterrupt the current method.
ResetReset the component.
SendSend standard input to the program executing on the remote host.

Event List


The following is the full list of the events fired by the component with short descriptions. Click on the links for further details.

ConnectedFired immediately after a connection completes (or fails).
ConnectionStatusFired to indicate changes in connection state.
DisconnectedFired when a connection is closed.
ErrorInformation about errors during data delivery.
StderrFired when data (complete lines) come in through stderr.
StdoutFired when data (complete lines) come in through stdout.

Configuration Settings


The following is a list of configuration settings for the component with short descriptions. Click on the links for further details.

EnableStderrEnables or disables secondary (stderr) stream.
MaxStderrMaximum storage available for the stderr buffer.
MaxStdoutMaximum storage available for the stdout buffer.
StderrPortThe local port from which the remote system sends the stderr stream.
CloseStreamAfterTransferIf true, the component will close the upload or download stream after the transfer.
ConnectionTimeoutSets a separate timeout value for establishing a connection.
FirewallAutoDetectTells the component whether or not to automatically detect and use firewall system settings, if available.
FirewallHostName or IP address of firewall (optional).
FirewallPasswordPassword to be used if authentication is to be used when connecting through the firewall.
FirewallPortThe TCP port for the FirewallHost;.
FirewallTypeDetermines the type of firewall to connect through.
FirewallUserA user name if authentication is to be used connecting through a firewall.
KeepAliveIntervalThe retry interval, in milliseconds, to be used when a TCP keep-alive packet is sent and no response is received.
KeepAliveTimeThe inactivity time in milliseconds before a TCP keep-alive packet is sent.
LingerWhen set to True, connections are terminated gracefully.
LingerTimeTime in seconds to have the connection linger.
LocalHostThe name of the local host through which connections are initiated or accepted.
LocalPortThe port in the local host where the component binds.
MaxLineLengthThe maximum amount of data to accumulate when no EOL is found.
MaxTransferRateThe transfer rate limit in bytes per second.
ProxyExceptionsListA semicolon separated list of hosts and IPs to bypass when using a proxy.
TCPKeepAliveDetermines whether or not the keep alive socket option is enabled.
TcpNoDelayWhether or not to delay when sending packets.
UseIPv6Whether to use IPv6.
LogSSLPacketsControls whether SSL packets are logged when using the internal security API.
OpenSSLCADirThe path to a directory containing CA certificates.
OpenSSLCAFileName of the file containing the list of CA's trusted by your application.
OpenSSLCipherListA string that controls the ciphers to be used by SSL.
OpenSSLPrngSeedDataThe data to seed the pseudo random number generator (PRNG).
ReuseSSLSessionDetermines if the SSL session is reused.
SSLCACertsA newline separated list of CA certificate to use during SSL client authentication.
SSLCheckCRLWhether to check the Certificate Revocation List for the server certificate.
SSLCipherStrengthThe minimum cipher strength used for bulk encryption.
SSLEnabledCipherSuitesThe cipher suite to be used in an SSL negotiation.
SSLEnabledProtocolsUsed to enable/disable the supported security protocols.
SSLEnableRenegotiationWhether the renegotiation_info SSL extension is supported.
SSLIncludeCertChainWhether the entire certificate chain is included in the SSLServerAuthentication event.
SSLNegotiatedCipherReturns the negotiated ciphersuite.
SSLNegotiatedCipherStrengthReturns the negotiated ciphersuite strength.
SSLNegotiatedCipherSuiteReturns the negotiated ciphersuite.
SSLNegotiatedKeyExchangeReturns the negotiated key exchange algorithm.
SSLNegotiatedKeyExchangeStrengthReturns the negotiated key exchange algorithm strength.
SSLNegotiatedProtocolReturns the negotiated protocol version.
SSLProviderThe name of the security provider to use.
SSLSecurityFlagsFlags that control certificate verification.
SSLServerCACertsA newline separated list of CA certificate to use during SSL server certificate validation.
TLS12SignatureAlgorithmsDefines the allowed TLS 1.2 signature algorithms when UseInternalSecurityAPI is True.
TLS12SupportedGroupsThe supported groups for ECC.
TLS13KeyShareGroupsThe groups for which to pregenerate key shares.
TLS13SignatureAlgorithmsThe allowed certificate signature algorithms.
TLS13SupportedGroupsThe supported groups for (EC)DHE key exchange.
AbsoluteTimeoutDetermines whether timeouts are inactivity timeouts or absolute timeouts.
FirewallDataUsed to send extra data to the firewall.
InBufferSizeThe size in bytes of the incoming queue of the socket.
OutBufferSizeThe size in bytes of the outgoing queue of the socket.
BuildInfoInformation about the product's build.
CodePageThe system code page used for Unicode to Multibyte translations.
LicenseInfoInformation about the current license.
UseInternalSecurityAPITells the component whether or not to use the system security libraries or an internal implementation.

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IPWorks 2020 Delphi Edition - Version 20.0 [Build 8161]