srpc: Secure Remote Procedure Call

In pbdRPC: Programming with Big Data -- Remote Procedure Call

Description

Launch a command via ssh or plink on a (remote) server.

Usage

srpc(cmd = "whoami", exec.type = .pbd_env$RPC.LI$exec.type,
  args = .pbd_env$RPC.LI$args, pport = .pbd_env$RPC.LI$pport,
  user = .pbd_env$RPC.LI$user, hostname = .pbd_env$RPC.LI$hostname,
  priv.key = .pbd_env$RPC.LI$priv.key,
  priv.key.ppk = .pbd_env$RPC.LI$priv.key.ppk,
  intern = .pbd_env$RPC.CT$intern, wait = .pbd_env$RPC.CT$wait)

Arguments

cmd	the command to be executed on the server.
exec.type	either "ssh" or "plink" in character. Windows will force to use "plink".
args	further arguments to "ssh" or "plink" for connecting to the server in addition to port, user id, and host name.
pport	ssh port opened on the server.
user	user id for logging to the server.
hostname	the server ip or host name.
priv.key, priv.key.ppk	location of the private key for user authentication, the file will be checked first then -i priv.key will be added to args when the file exists. priv.key.ppk is only used when plink is called.
intern, wait	arguments passed to system() or shell() whereever they are applicable.

Details

Using either ssh or plink to launch a command on a (remote) server. Authentication is working currently for ssh.

NO further input from stdin is expected. Outputs or errors may not be captured by R.

Value

Mainly the message received from the command line of server may be returned but may not be captured by R.

For example, Windows with plink will not capture the return because currently the authentication is not working. A windows bat file is launched by shell.exec() in an additional cmd.exe window to avoid saving password inside R.

See Also

start_rr(), check_rr(), kill_rr(), ssh(), and plink().

Examples

## Not run: 
library(pbdRPC, quietly = TRUE)
rpcopt_set(user = "snoweye", hostname = "192.168.56.101")

### see start_rr(), check_rr(), and kill_rr() for more examples.
srpc()
srpc("ls")
srpc("ls ~/work-my")
srpc("cat ~/work-my/00_set_devel_R")

### see ssh(), plink(), and run_args() for lower level examples.

### Local port forwarding
srpc(args = "-N -T -L 55555:localhost:55555")
start_rr()

library(remoter)
client()    # equivalent to client(addr = "192.168.56.101")

## End(Not run)

pbdRPC documentation built on May 1, 2019, 7:28 p.m.