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</head>
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<body>
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<main>
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<article id="content">
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<header>
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<h1 class="title">Module <code>src.onionrblocks.blockimporter</code></h1>
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</header>
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<section id="section-intro">
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<p>Onionr - Private P2P Communication</p>
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<p>Import block data and save it</p>
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<details class="source">
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<summary>
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<span>Expand source code</span>
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</summary>
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<pre><code class="python">'''
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Onionr - Private P2P Communication
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Import block data and save it
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'''
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from onionrexceptions import BlacklistedBlock
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from onionrexceptions import DiskAllocationReached
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from onionrexceptions import InvalidProof
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from onionrexceptions import InvalidMetadata
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import logger
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from onionrutils import validatemetadata
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from onionrutils import blockmetadata
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from coredb import blockmetadb
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import onionrstorage
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import onionrcrypto as crypto
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from . import onionrblacklist
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'''
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This program 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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This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
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'''
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def import_block_from_data(content):
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blacklist = onionrblacklist.OnionrBlackList()
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ret_data = False
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try:
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content = content.encode()
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except AttributeError:
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pass
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data_hash = crypto.hashers.sha3_hash(content)
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if blacklist.inBlacklist(data_hash):
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raise BlacklistedBlock(f'%s is a blacklisted block {data_hash}')
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# returns tuple(metadata, meta), meta is also in metadata
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metas = blockmetadata.get_block_metadata_from_data(content)
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metadata = metas[0]
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# check if metadata is valid
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if validatemetadata.validate_metadata(metadata, metas[2]):
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# check if POW is enough/correct
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if crypto.cryptoutils.verify_POW(content):
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logger.info(f'Imported block passed proof, saving: {data_hash}.',
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terminal=True)
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try:
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blockHash = onionrstorage.set_data(content)
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except DiskAllocationReached:
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logger.warn('Failed to save block due to full disk allocation')
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raise
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else:
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blockmetadb.add_to_block_DB(blockHash, dataSaved=True)
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# caches block metadata values to block database
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blockmetadata.process_block_metadata(blockHash)
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ret_data = blockHash
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else:
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raise InvalidProof
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else:
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raise InvalidMetadata
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return ret_data</code></pre>
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</details>
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</section>
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<section>
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</section>
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<section>
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</section>
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<section>
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<h2 class="section-title" id="header-functions">Functions</h2>
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<dl>
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<dt id="src.onionrblocks.blockimporter.import_block_from_data"><code class="name flex">
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<span>def <span class="ident">import_block_from_data</span></span>(<span>content)</span>
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</code></dt>
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<dd>
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<section class="desc"></section>
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<details class="source">
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<summary>
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<span>Expand source code</span>
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</summary>
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<pre><code class="python">def import_block_from_data(content):
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blacklist = onionrblacklist.OnionrBlackList()
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ret_data = False
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try:
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content = content.encode()
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except AttributeError:
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pass
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data_hash = crypto.hashers.sha3_hash(content)
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if blacklist.inBlacklist(data_hash):
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raise BlacklistedBlock(f'%s is a blacklisted block {data_hash}')
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# returns tuple(metadata, meta), meta is also in metadata
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metas = blockmetadata.get_block_metadata_from_data(content)
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metadata = metas[0]
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# check if metadata is valid
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if validatemetadata.validate_metadata(metadata, metas[2]):
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# check if POW is enough/correct
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if crypto.cryptoutils.verify_POW(content):
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logger.info(f'Imported block passed proof, saving: {data_hash}.',
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terminal=True)
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try:
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blockHash = onionrstorage.set_data(content)
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except DiskAllocationReached:
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logger.warn('Failed to save block due to full disk allocation')
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raise
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else:
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blockmetadb.add_to_block_DB(blockHash, dataSaved=True)
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# caches block metadata values to block database
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blockmetadata.process_block_metadata(blockHash)
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ret_data = blockHash
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else:
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raise InvalidProof
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else:
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raise InvalidMetadata
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return ret_data</code></pre>
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</details>
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</dd>
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</dl>
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</section>
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<section>
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</section>
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</article>
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<nav id="sidebar">
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<h1>Index</h1>
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<div class="toc">
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<ul></ul>
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</div>
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<ul id="index">
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<li><h3>Super-module</h3>
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<ul>
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<li><code><a title="src.onionrblocks" href="index.html">src.onionrblocks</a></code></li>
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</ul>
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</li>
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<li><h3><a href="#header-functions">Functions</a></h3>
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<ul class="">
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<li><code><a title="src.onionrblocks.blockimporter.import_block_from_data" href="#src.onionrblocks.blockimporter.import_block_from_data">import_block_from_data</a></code></li>
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</ul>
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</li>
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</ul>
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</nav>
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