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 Scp {
    root_dir: String,
    known_hosts_file: Option<String>,
    private_keys: Vec<String>,
    args: String,
    verbose: bool,
}

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

    pub fn set_root_dir(&mut self, root_dir: &str) -> &mut Self {
        self.root_dir = root_dir.to_string();
        self
    }

    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_args(&mut self, args: &str) -> &mut Self {
        self.args = args.to_string();
        self
    }

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

    pub fn copy(&self, from: &str, to: &str) -> SystemCommand {
        let mut command = SystemCommand::new(&format!("{}/usr/bin/scp", self.root_dir));

        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
            .arg("-3")
            .arg("-r")
            .arg(format!("-S{}/usr/bin/ssh", self.root_dir))
            .args(self.private_keys.iter().map(|key| format!("-i{key}")))
            .args(self.args.split(' ').filter(|item| !item.is_empty()))
            .arg(from)
            .arg(to);

        if self.verbose {
            println!("{}", command.get_command());
        }

        command
    }
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_scp_minimal() {
        let cmd = Scp::new().copy("/from/file", "/to/file");
        assert_eq!(
            cmd.get_command(),
            "/usr/bin/scp -3 -r -S/usr/bin/ssh /from/file /to/file"
        );
    }

    #[test]
    fn test_scp_minimal_snap() {
        let cmd = Scp::new()
            .set_root_dir("/snap/cubic/current")
            .copy("/from/file", "/to/file");
        assert_eq!(cmd.get_command(), "/snap/cubic/current/usr/bin/scp -3 -r -S/snap/cubic/current/usr/bin/ssh /from/file /to/file");
    }

    #[test]
    fn test_scp_advanced() {
        let cmd = Scp::new()
            .set_root_dir("/snap/cubic/current")
            .set_verbose(true)
            .set_known_hosts_file(Some("/home/test/.ssh/known_hosts".to_string()))
            .set_private_keys(vec![
                "/home/cubic/.ssh/id_rsa".to_string(),
                "/home/cubic/.ssh/id_ed25519".to_string(),
            ])
            .set_args("-myarg1 -myarg2 -myarg3")
            .copy("/from/file", "/to/file");

        assert_eq!(cmd.get_command(), "/snap/cubic/current/usr/bin/scp -oUserKnownHostsFile=/home/test/.ssh/known_hosts -3 -r -S/snap/cubic/current/usr/bin/ssh -i/home/cubic/.ssh/id_rsa -i/home/cubic/.ssh/id_ed25519 -myarg1 -myarg2 -myarg3 /from/file /to/file"
        );
    }
}