98b7c07171
* Update `add_license` script * run script * add `remove duplicate lines script` and run it * Revert changes `English spaces` * strip whitespaces * Revert `GPL` in files with `apache/mit license` * don't append `gpl license` in files with other lic * Don't append `gpl header` in files with other lic. * re-ran script * include c and cpp files too * remove duplicate header * rebase nit
33 lines
1.2 KiB
Rust
33 lines
1.2 KiB
Rust
// Copyright 2015-2018 Parity Technologies (UK) Ltd.
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// This file is part of Parity.
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// Parity is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Parity is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Parity. If not, see <http://www.gnu.org/licenses/>.
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//! IPFS utility functions
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use multihash;
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use cid::{Cid, Codec, Version};
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use crypto::digest;
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use jsonrpc_core::Error;
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use v1::types::Bytes;
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use super::errors;
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/// Compute CIDv0 from protobuf encoded bytes.
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pub fn cid(content: Bytes) -> Result<String, Error> {
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let hash = digest::sha256(&content.0);
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let mh = multihash::encode(multihash::Hash::SHA2256, &*hash).map_err(errors::encoding)?;
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let cid = Cid::new(Codec::DagProtobuf, Version::V0, &mh);
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Ok(cid.to_string().into())
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}
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