cubic 0.14.0

Cubic is a lightweight command line manager for virtual machines. It has a simple, daemon-less and rootless design. All Cubic virtual machines run isolated in the user context. Cubic is built on top of QEMU, KVM and cloud-init. Show all supported images: $ cubic images Create a new virtual machine instance: $ cubic create mymachine --image ubuntu:noble List all virtual machine instances: $ cubic instances Start an instance: $ cubic start <instance name> Stop an instance: $ cubic stop <instance name> Open a shell in the instance: $ cubic ssh <machine name> Copy a file from the host to the instance: $ cubic scp <path/to/host/file> <machine>:<path/to/guest/file> Copy a file from the instance to the hots: $ cubic scp <machine>:<path/to/guest/file> <path/to/host/file> 
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use crate::fs::FS;
use crate::util::SystemCommand;
use std::path::Path;

#[derive(Default)]
pub struct Ssh {
    known_hosts_file: Option<String>,
    private_keys: Vec<String>,
    user: String,
    port: Option<u16>,
    args: String,
    xforward: bool,
    cmd: Option<String>,
}

impl Ssh {
    pub fn new() -> Self {
        Ssh::default()
    }

    pub fn set_known_hosts_file(&mut self, path: Option<String>) -> &mut Self {
        self.known_hosts_file = path;
        self
    }

    pub fn set_private_keys(&mut self, private_keys: Vec<String>) -> &mut Self {
        self.private_keys = private_keys;
        self
    }

    pub fn set_user(&mut self, user: String) -> &mut Self {
        self.user = user;
        self
    }

    pub fn set_port(&mut self, port: Option<u16>) -> &mut Self {
        self.port = port;
        self
    }

    pub fn set_args(&mut self, args: String) -> &mut Self {
        self.args = args;
        self
    }

    pub fn set_xforward(&mut self, xforward: bool) -> &mut Self {
        self.xforward = xforward;
        self
    }

    pub fn set_cmd(&mut self, cmd: Option<String>) -> &mut Self {
        self.cmd = cmd;
        self
    }

    pub fn connect(&self) -> SystemCommand {
        let mut command = SystemCommand::new("ssh");

        if let Some(ref known_hosts_file) = self.known_hosts_file {
            Path::new(known_hosts_file)
                .parent()
                .and_then(|dir| dir.to_str())
                .map(|dir| FS::new().create_dir(dir));

            command.arg(format!("-oUserKnownHostsFile={known_hosts_file}"));
        }

        command
            .args(self.port.map(|port| format!("-p{port}")).as_slice())
            .arg("-oPreferredAuthentications=publickey,password")
            .arg("-oStrictHostKeyChecking=accept-new")
            .args(
                self.private_keys
                    .iter()
                    .map(|key| format!("-i{key}"))
                    .collect::<Vec<_>>(),
            )
            .args(self.xforward.then_some("-X").as_slice())
            .args(self.args.split(' ').filter(|item| !item.is_empty()))
            .arg(format!("{}@127.0.0.1", self.user))
            .args(self.cmd.as_slice());

        command
    }
}