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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>onionr.onionrutils.blockmetadata.process</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>Process block metadata with relevant actions</p>
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<details class="source">
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<summary>Source code</summary>
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<pre><code class="python">'''
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Onionr - Private P2P Communication
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Process block metadata with relevant actions
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'''
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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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from etc import onionrvalues
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from onionrblocks import onionrblockapi
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from .. import epoch, bytesconverter
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from coredb import blockmetadb
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import logger
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from onionrplugins import onionrevents
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import onionrexceptions
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from onionrusers import onionrusers
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def process_block_metadata(blockHash: str):
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'''
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Read metadata from a block and cache it to the block database
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blockHash -> sha3_256 hex formatted hash of Onionr block
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'''
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curTime = epoch.get_rounded_epoch(roundS=60)
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myBlock = onionrblockapi.Block(blockHash)
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if myBlock.isEncrypted:
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myBlock.decrypt()
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if (myBlock.isEncrypted and myBlock.decrypted) or (not myBlock.isEncrypted):
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blockType = myBlock.getMetadata('type') # we would use myBlock.getType() here, but it is bugged with encrypted blocks
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signer = bytesconverter.bytes_to_str(myBlock.signer)
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valid = myBlock.verifySig()
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if valid:
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if myBlock.getMetadata('newFSKey') is not None:
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try:
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onionrusers.OnionrUser(signer).addForwardKey(myBlock.getMetadata('newFSKey'))
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except onionrexceptions.InvalidPubkey:
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logger.warn('%s has invalid forward secrecy key to add: %s' % (signer, myBlock.getMetadata('newFSKey')))
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try:
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if len(blockType) <= onionrvalues.MAX_BLOCK_TYPE_LENGTH:
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blockmetadb.update_block_info(blockHash, 'dataType', blockType)
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except TypeError:
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logger.warn("Missing block information")
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pass
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# Set block expire time if specified
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try:
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expireTime = int(myBlock.getHeader('expire'))
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# test that expire time is an integer of sane length (for epoch)
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# doesn't matter if its too large because of the min() func below
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if not len(str(expireTime)) < 20: raise ValueError('timestamp invalid')
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except (ValueError, TypeError) as e:
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expireTime = onionrvalues.DEFAULT_EXPIRE + curTime
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finally:
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expireTime = min(expireTime, curTime + onionrvalues.DEFAULT_EXPIRE)
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blockmetadb.update_block_info(blockHash, 'expire', expireTime)
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onionrevents.event('processblocks', data = {'block': myBlock, 'type': blockType, 'signer': signer, 'validSig': valid})</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="onionr.onionrutils.blockmetadata.process.process_block_metadata"><code class="name flex">
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<span>def <span class="ident">process_block_metadata</span></span>(<span>blockHash)</span>
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</code></dt>
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<dd>
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<section class="desc"><p>Read metadata from a block and cache it to the block database</p>
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<p>blockHash -> sha3_256 hex formatted hash of Onionr block</p></section>
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<details class="source">
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<summary>Source code</summary>
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<pre><code class="python">def process_block_metadata(blockHash: str):
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'''
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Read metadata from a block and cache it to the block database
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blockHash -> sha3_256 hex formatted hash of Onionr block
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'''
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curTime = epoch.get_rounded_epoch(roundS=60)
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myBlock = onionrblockapi.Block(blockHash)
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if myBlock.isEncrypted:
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myBlock.decrypt()
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if (myBlock.isEncrypted and myBlock.decrypted) or (not myBlock.isEncrypted):
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blockType = myBlock.getMetadata('type') # we would use myBlock.getType() here, but it is bugged with encrypted blocks
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signer = bytesconverter.bytes_to_str(myBlock.signer)
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valid = myBlock.verifySig()
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if valid:
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if myBlock.getMetadata('newFSKey') is not None:
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try:
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onionrusers.OnionrUser(signer).addForwardKey(myBlock.getMetadata('newFSKey'))
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except onionrexceptions.InvalidPubkey:
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logger.warn('%s has invalid forward secrecy key to add: %s' % (signer, myBlock.getMetadata('newFSKey')))
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try:
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if len(blockType) <= onionrvalues.MAX_BLOCK_TYPE_LENGTH:
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blockmetadb.update_block_info(blockHash, 'dataType', blockType)
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except TypeError:
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logger.warn("Missing block information")
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pass
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# Set block expire time if specified
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try:
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expireTime = int(myBlock.getHeader('expire'))
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# test that expire time is an integer of sane length (for epoch)
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# doesn't matter if its too large because of the min() func below
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if not len(str(expireTime)) < 20: raise ValueError('timestamp invalid')
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except (ValueError, TypeError) as e:
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expireTime = onionrvalues.DEFAULT_EXPIRE + curTime
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finally:
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expireTime = min(expireTime, curTime + onionrvalues.DEFAULT_EXPIRE)
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blockmetadb.update_block_info(blockHash, 'expire', expireTime)
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onionrevents.event('processblocks', data = {'block': myBlock, 'type': blockType, 'signer': signer, 'validSig': valid})</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="onionr.onionrutils.blockmetadata" href="index.html">onionr.onionrutils.blockmetadata</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="onionr.onionrutils.blockmetadata.process.process_block_metadata" href="#onionr.onionrutils.blockmetadata.process.process_block_metadata">process_block_metadata</a></code></li>
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</ul>
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</li>
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</ul>
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