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
145
146
147
148
149
150
151
152
153
154
155

pub mod git;

use crate::prelude::*;
use crev_common;
use crev_data::proof::{self, ContentExt};
use failure::bail;
use git2;
use std::{self, env, ffi, fmt::Write as FmtWrite, fs, io, io::Write, path::Path};
use tempdir;

pub use crev_common::{
    read_file_to_string, run_with_shell_cmd, store_str_to_file, store_to_file_with,
};

fn get_git_default_editor() -> Result<String> {
    let cfg = git2::Config::open_default()?;
    Ok(cfg.get_string("core.editor")?)
}

fn get_editor_to_use() -> Result<ffi::OsString> {
    Ok(if let Some(v) = env::var_os("VISUAL") {
        v
    } else if let Some(v) = env::var_os("EDITOR") {
        v
    } else if let Ok(v) = get_git_default_editor() {
        v.into()
    } else {
        "vi".into()
    })
}

/// Retruns the edited string, and bool indicating if the file was ever written to/ (saved).
fn edit_text_iteractively_raw(text: &str) -> Result<(String, bool)> {
    let dir = tempdir::TempDir::new("crev")?;
    let file_path = dir.path().join("crev.review");
    let mut file = fs::File::create(&file_path)?;
    file.write_all(text.as_bytes())?;
    file.flush()?;
    drop(file);

    let starting_ts = std::fs::metadata(&file_path)?
        .modified()
        .unwrap_or_else(|_| std::time::SystemTime::now());

    edit_file(&file_path)?;

    let modified_ts = std::fs::metadata(&file_path)?
        .modified()
        .unwrap_or_else(|_| std::time::SystemTime::now());

    Ok((read_file_to_string(&file_path)?, starting_ts != modified_ts))
}

pub fn edit_text_iteractively(text: &str) -> Result<String> {
    Ok(edit_text_iteractively_raw(text)?.0)
}

pub fn edit_text_iteractively_until_writen_to(text: &str) -> Result<String> {
    loop {
        let (text, modified) = edit_text_iteractively_raw(text)?;
        if !modified {
            eprintln!(
                "File not written to. Make sure to save it at least once to confirm the data."
            );
            crev_common::try_again_or_cancel()?;
            continue;
        }

        return Ok(text);
    }
}

pub fn edit_file(path: &Path) -> Result<()> {
    let editor = get_editor_to_use()?;

    let status = run_with_shell_cmd(editor, Some(path))?;

    if !status.success() {
        bail!("Editor returned {}", status);
    }
    Ok(())
}

pub fn get_documentation_for(content: &impl proof::Content) -> &'static str {
    match content.kind() {
        proof::Trust::KIND => include_str!("../../rc/doc/editing-trust.md"),
        proof::CodeReview::KIND => include_str!("../../rc/doc/editing-code-review.md"),
        proof::PackageReview::KIND => include_str!("../../rc/doc/editing-package-review.md"),
        _ => "unknown proof type",
    }
}

pub fn edit_proof_content_iteractively<C: proof::ContentWithDraft>(
    content: &C,
    previous_date: Option<&proof::Date>,
    base_version: Option<&semver::Version>,
) -> Result<C> {
    let mut text = String::new();
    if let Some(date) = previous_date {
        text.write_str(&format!(
            "# Overwriting existing proof created on {}\n",
            date.to_rfc3339()
        ))?;
    }
    let draft = content.to_draft();

    text.write_str(&format!("# {}\n", draft.title()))?;
    if let Some(base_version) = base_version {
        text.write_str(&format!("# Diff base version: {}\n", base_version))?;
    }
    text.write_str(&draft.body())?;
    text.write_str("\n\n")?;
    for line in get_documentation_for(content).lines() {
        text.write_fmt(format_args!("# {}\n", line))?;
    }
    loop {
        text = edit_text_iteractively_until_writen_to(&text)?;
        match content.apply_draft(&text) {
            Err(e) => {
                eprintln!("There was an error parsing content: {}", e);
                crev_common::try_again_or_cancel()?;
            }
            Ok(content) => {
                if let Err(e) = content.ensure_serializes_to_valid_proof() {
                    eprintln!("There was an error validating serialized proof: {}", e);
                    crev_common::try_again_or_cancel()?;
                } else {
                    return Ok(content);
                }
            }
        }
    }
}

pub fn err_eprint_and_ignore<O, E: std::error::Error>(res: std::result::Result<O, E>) -> Option<O> {
    match res {
        Err(e) => {
            eprintln!("{}", e);
            None
        }
        Ok(o) => Some(o),
    }
}

#[cfg(target_family = "unix")]
pub fn chmod_path_to_600(path: &Path) -> io::Result<()> {
    use std::{fs::Permissions, os::unix::fs::PermissionsExt};

    std::fs::set_permissions(path, Permissions::from_mode(0o600))
}

#[cfg(not(target_family = "unix"))]
pub fn chmod_path_to_600(path: &Path) -> io::Result<()> {
    Ok(())
}