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

//  Copyright (C) 2017-2019  The AXIOM TEAM Association.
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program.  If not, see <https://www.gnu.org/licenses/>.

//! Define the Text Document Traits.

use crate::*;
use dup_crypto::keys::*;

#[derive(Clone, Debug, Deserialize, Serialize, PartialEq, Eq)]
/// Contains a document in full or compact format
pub enum TextDocumentFormat<D: TextDocument> {
    /// Complete format (Allows to check the validity of the signature)
    Complete(D),
    /// Format present in the blocks (does not always allow to verify the signature)
    Compact(D::CompactTextDocument_),
}

impl<D: TextDocument> TextDocumentFormat<D> {
    /// To compact document
    pub fn to_compact_document(&self) -> D::CompactTextDocument_ {
        match *self {
            TextDocumentFormat::Complete(ref doc) => doc.to_compact_document(),
            TextDocumentFormat::Compact(ref compact_doc) => (*compact_doc).clone(),
        }
    }
}

/// Trait for a compact text document.
pub trait CompactTextDocument: Sized + Clone {
    /// Generate document compact text.
    /// the compact format is the one used in the blocks.
    ///
    /// - Don't contains leading signatures
    /// - Contains line breaks on all line.
    fn as_compact_text(&self) -> String;
}

impl<D: TextDocument> CompactTextDocument for TextDocumentFormat<D> {
    fn as_compact_text(&self) -> String {
        match *self {
            TextDocumentFormat::Complete(ref doc) => doc.generate_compact_text(),
            TextDocumentFormat::Compact(ref doc) => doc.as_compact_text(),
        }
    }
}

/// Trait for a V10 document.
pub trait TextDocument: Document<PublicKey = PubKey> {
    /// Type of associated compact document.
    type CompactTextDocument_: CompactTextDocument;

    /// Return document as text.
    fn as_text(&self) -> &str;

    /// Return document as text without signature.
    fn as_text_without_signature(&self) -> &str {
        let text = self.as_text();
        let mut lines: Vec<&str> = self.as_text().split('\n').collect();
        let sigs = self.signatures();
        let mut sigs_str_len = sigs.len() - 1;
        for _ in sigs {
            sigs_str_len += lines.pop().unwrap_or("").len();
        }
        &text[0..(text.len() - sigs_str_len)]
    }

    /*/// Return document as text with leading signatures.
    fn as_text_with_signatures(&self) -> String {
        let mut text = self.as_text().to_string();

        for sig in self.signatures() {
            text = format!("{}{}\n", text, sig.to_base64());
        }

        text
    }*/

    /// Generate compact document.
    /// the compact format is the one used in the blocks.
    /// - Don't contains leading signatures
    fn to_compact_document(&self) -> Self::CompactTextDocument_;

    /// Generate document compact text.
    /// the compact format is the one used in the blocks.
    ///
    /// - Don't contains leading signatures
    /// - Contains line breaks on all line.
    fn generate_compact_text(&self) -> String {
        self.to_compact_document().as_compact_text()
    }
}

/// Trait for a V10 document builder.
pub trait TextDocumentBuilder: DocumentBuilder {
    /// Generate document text.
    ///
    /// - Don't contains leading signatures
    /// - Contains line breaks on all line.
    fn generate_text(&self) -> String;

    /// Generate final document with signatures, and also return them in an array.
    ///
    /// Returns :
    ///
    /// - Text without signatures
    /// - Signatures
    fn build_signed_text(&self, private_keys: Vec<PrivKey>) -> (String, Vec<Sig>) {
        let text = self.generate_text();

        let signatures: Vec<_> = {
            let text_bytes = text.as_bytes();
            private_keys
                .iter()
                .map(|key| key.sign(text_bytes))
                .collect()
        };

        (text, signatures)
    }
}