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certification.rs

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  • certification.rs 12.72 KiB
    //  Copyright (C) 2018  The Duniter Project Developers.
    //
    // 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/>.
    
    //! Wrappers around Certification documents.
    
    extern crate serde;
    
    use duniter_crypto::keys::{PublicKey, Signature, ed25519};
    use regex::Regex;
    use self::serde::ser::{Serialize, Serializer};
    
    use Blockstamp;
    use blockchain::{BlockchainProtocol, Document, DocumentBuilder, IntoSpecializedDocument};
    use blockchain::v10::documents::{StandardTextDocumentParser, TextDocument, TextDocumentBuilder,
                                     V10Document, V10DocumentParsingError};
    
    lazy_static! {
        static ref CERTIFICATION_REGEX: Regex = Regex::new(
            "^Issuer: (?P<issuer>[1-9A-Za-z][^OIl]{43,44})\n\
             IdtyIssuer: (?P<target>[1-9A-Za-z][^OIl]{43,44})\n\
             IdtyUniqueID: (?P<idty_uid>[[:alnum:]_-]+)\n\
             IdtyTimestamp: (?P<idty_blockstamp>[0-9]+-[0-9A-F]{64})\n\
             IdtySignature: (?P<idty_sig>(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?)\n\
             CertTimestamp: (?P<blockstamp>[0-9]+-[0-9A-F]{64})\n$"
        ).unwrap();
    }
    
    /// Wrap an Certification document.
    ///
    /// Must be created by parsing a text document or using a builder.
    #[derive(Debug, Clone)]
    pub struct CertificationDocument {
        /// Document as text.
        ///
        /// Is used to check signatures, and other values mut be extracted from it.
        text: String,
    
        /// Name of the currency.
        currency: String,
        /// Document issuer (there should be only one).
        issuers: Vec<ed25519::PublicKey>,
        /// issuer of target identity.
        target: ed25519::PublicKey,
        /// Username of target identity
        identity_username: String,
        /// Target Identity document blockstamp.
        identity_blockstamp: Blockstamp,
        /// Target Identity document signature.
        identity_sig: ed25519::Signature,
        /// Blockstamp
        blockstamp: Blockstamp,
        /// Document signature (there should be only one).
        signatures: Vec<ed25519::Signature>,
    }
    
    impl CertificationDocument {
        /// Username of target identity
        pub fn identity_username(&self) -> &str {