1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144

// MIT License
//
// Copyright (c) 2023,2024 Robin Doer
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
// IN THE SOFTWARE.

pub mod archive;
pub mod container;

use anyhow::{anyhow, Result};
use clap::{crate_version, ArgAction, Parser, Subcommand};
use env_logger::Builder;
use log::debug;
use log::LevelFilter;
use nuts_container::{Container, OpenOptionsBuilder};
use nuts_directory::{DirectoryBackend, OpenOptions};
use rpassword::prompt_password;
use std::fs;
use std::path::PathBuf;

use crate::cli::archive::ArchiveArgs;
use crate::cli::container::ContainerArgs;

#[derive(Debug, Parser)]
#[clap(name = "nuts", bin_name = "nuts")]
#[clap(version = crate_version!())]
pub struct NutsCli {
    #[clap(subcommand)]
    command: Commands,

    /// Enable verbose output. Can be called multiple times
    #[clap(short, long, action = ArgAction::Count, global = true)]
    verbose: u8,

    /// Be quiet. Don't produce any output
    #[clap(short, long, action = ArgAction::SetTrue, global = true)]
    pub quiet: bool,
}

impl NutsCli {
    pub fn configure_logging(&self) {
        let filter = match self.verbose {
            0 => LevelFilter::Off,
            1 => LevelFilter::Info,
            2 => LevelFilter::Debug,
            _ => LevelFilter::Trace,
        };

        Builder::new().filter_level(filter).init();
    }

    pub fn run(&self) -> Result<()> {
        self.command.run()
    }
}

#[derive(Debug, Subcommand)]
pub enum Commands {
    /// General container tasks
    Container(ContainerArgs),

    /// An archive on top of the container
    Archive(ArchiveArgs),
}

impl Commands {
    pub fn run(&self) -> Result<()> {
        match self {
            Self::Container(args) => args.run(),
            Self::Archive(args) => args.run(),
        }
    }
}

fn tool_dir() -> Result<PathBuf> {
    match home::home_dir() {
        Some(dir) => {
            let tool_dir = dir.join(".nuts");

            debug!("tool_dir: {}", tool_dir.display());

            if !tool_dir.is_dir() {
                debug!("creating tool dir {}", tool_dir.display());
                fs::create_dir(&tool_dir)?;
            }

            Ok(tool_dir)
        }
        None => Err(anyhow!("unable to locate home-directory")),
    }
}

fn open_container(name: &str) -> Result<Container<DirectoryBackend<PathBuf>>> {
    let path = container_dir_for(name)?;

    let builder = OpenOptionsBuilder::new().with_password_callback(ask_for_password);
    let options = builder.build::<DirectoryBackend<PathBuf>>()?;

    Ok(Container::open(OpenOptions::for_path(path), options)?)
}

fn container_dir() -> Result<PathBuf> {
    let parent = tool_dir()?;
    let dir = parent.join("container.d");

    debug!("container_dir: {}", dir.display());

    if !dir.is_dir() {
        debug!("creating container dir {}", dir.display());
        fs::create_dir(&dir)?;
    }

    Ok(dir)
}

fn container_dir_for<S: AsRef<str>>(name: S) -> Result<PathBuf> {
    let parent = container_dir()?;
    let dir = parent.join(name.as_ref());

    debug!("container_dir for {}: {}", name.as_ref(), dir.display());

    Ok(dir)
}

pub fn ask_for_password() -> Result<Vec<u8>, String> {
    let password = prompt_password("Enter a password: ").map_err(|err| err.to_string())?;
    Ok(password.as_bytes().to_vec())
}