magicpak 1.4.0

Build minimal docker images without static linking
Documentation 
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use std::ffi::OsString;
use std::path::PathBuf;
use std::process::ExitStatus;
use std::{error, fmt, io, result, str};

use goblin::error as goblin;

#[derive(Debug)]
pub enum Error {
    InvalidDestination(PathBuf),
    NonEmptyDestionation(PathBuf),
    InvalidGlobPattern(String),
    SharedLibraryLookup(String),
    ResolverCompilation(String),
    MalformedExecutable(String),
    ValueNotFoundInStrtab { tag: u64, val: u64 },
    InterpretorNotFound,
    BusyBoxInstall(String),
    TestFailed(String),
    TestStdoutMismatch { expected: String, got: String },
    ExecutableLocateFailed(String, which::Error),
    Upx(String),
    DynamicFailed(ExitStatus),
    Encoding(str::Utf8Error),
    PathEncoding(OsString),
    InvalidObjectPath(PathBuf),
    DynamicWithMultipleInputsUnsupported,
    TestWithMultipleInputsUnsupported,
    IO(io::Error),
}

pub type Result<T> = result::Result<T, Error>;

impl fmt::Display for Error {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match self {
            Error::InvalidDestination(path) => {
                write!(f, "The destination is invalid: {}", path.display())
            }
            Error::NonEmptyDestionation(path) => {
                write!(f, "The destination is not empty: {}", path.display())
            }
            Error::InvalidGlobPattern(e) => write!(f, "Invalid glob pattern: {}", e),
            Error::SharedLibraryLookup(e) => write!(f, "Unable to lookup shared library: {}", e),
            Error::ResolverCompilation(e) => write!(
                f,
                "Error happend during the compilation of library resolver: {}",
                e
            ),
            Error::MalformedExecutable(e) => write!(f, "The executable is malformed: {}", e),
            Error::ValueNotFoundInStrtab { tag, val } => write!(
                f,
                "The executable is malformed: Value {} with tag {} is not found on strtab",
                val, tag
            ),
            Error::InterpretorNotFound => {
                write!(f, "Could not find an interpreter for the executable")
            }
            Error::BusyBoxInstall(e) => write!(
                f,
                "Unable to install busybox to the temporary directory: {}",
                e
            ),
            Error::TestFailed(cmd) => write!(f, "Test failed: {} returned non-zero exit code", cmd),
            Error::TestStdoutMismatch { expected, got } => write!(
                f,
                "Test failed: Test command stdout mismatch. expected: '{}', but got '{}'",
                expected, got
            ),
            Error::Encoding(e) => write!(f, "Encoding error: {}", e),
            Error::ExecutableLocateFailed(exe, e) => {
                write!(f, "Unable to locate executable '{}': {}", exe, e)
            }
            Error::Upx(e) => write!(f, "upx failed with non-zero exit code: {}", e),
            Error::DynamicFailed(status) => {
                write!(f, "Dynamic analysis subproecss failed: {}", status)
            }
            Error::PathEncoding(p) => write!(
                f,
                "Unable to interpret the path as UTF-8: {}",
                p.to_string_lossy()
            ),
            Error::InvalidObjectPath(p) => {
                write!(f, "Invalid ELF object file path '{}'", p.display())
            }
            Error::TestWithMultipleInputsUnsupported => {
                write!(f, "use of --test with multiple inputs is not supported")
            }
            Error::DynamicWithMultipleInputsUnsupported => {
                write!(f, "use of --dynamic with multiple inputs is not supported")
            }
            Error::IO(e) => write!(f, "IO error: {}", e),
        }
    }
}

impl error::Error for Error {}

impl From<io::Error> for Error {
    fn from(err: io::Error) -> Self {
        Error::IO(err)
    }
}

impl From<str::Utf8Error> for Error {
    fn from(err: str::Utf8Error) -> Self {
        Error::Encoding(err)
    }
}

impl From<goblin::Error> for Error {
    fn from(err: goblin::Error) -> Self {
        match err {
            goblin::Error::IO(e) => Error::IO(e),
            e => Error::MalformedExecutable(e.to_string()),
        }
    }
}

impl From<glob::PatternError> for Error {
    fn from(err: glob::PatternError) -> Self {
        Error::InvalidGlobPattern(err.msg.to_string())
    }
}

impl From<nix::Error> for Error {
    fn from(err: nix::Error) -> Self {
        Error::IO(err.into())
    }
}