peerplays_migrated/libraries/chain/account_evaluator.cpp
2023-03-06 15:50:17 +00:00

552 lines
21 KiB
C++

/*
* Copyright (c) 2015 Cryptonomex, Inc., and contributors.
*
* The MIT License
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <graphene/chain/account_evaluator.hpp>
#include <graphene/chain/buyback.hpp>
#include <graphene/chain/buyback_object.hpp>
#include <graphene/chain/database.hpp>
#include <graphene/chain/exceptions.hpp>
#include <graphene/chain/hardfork.hpp>
#include <graphene/chain/internal_exceptions.hpp>
#include <graphene/chain/special_authority.hpp>
#include <graphene/chain/special_authority_object.hpp>
#include <graphene/chain/worker_object.hpp>
#include <algorithm>
namespace graphene { namespace chain {
void verify_authority_accounts( const database& db, const authority& a )
{
const auto& chain_params = db.get_global_properties().parameters;
GRAPHENE_ASSERT(
a.num_auths() <= chain_params.maximum_authority_membership,
internal_verify_auth_max_auth_exceeded,
"Maximum authority membership exceeded" );
for( const auto& acnt : a.account_auths )
{
GRAPHENE_ASSERT( db.find_object( acnt.first ) != nullptr,
internal_verify_auth_account_not_found,
"Account ${a} specified in authority does not exist",
("a", acnt.first) );
}
}
// Overwrites the num_son values from the origin to the destination for those sidechains which are found in the origin.
// Keeps the values of num_son for the sidechains which are found in the destination, but not in the origin.
// Returns false if an error is detected.
bool merge_num_sons( flat_map<sidechain_type, uint16_t>& destination,
const flat_map<sidechain_type, uint16_t>& origin,
fc::optional<time_point_sec> head_block_time = {})
{
const auto active_sidechains = head_block_time.valid() ? active_sidechain_types(*head_block_time) : all_sidechain_types;
bool success = true;
for (const auto &ns : origin)
{
destination[ns.first] = ns.second;
if (active_sidechains.find(ns.first) == active_sidechains.end())
{
success = false;
}
}
return success;
}
flat_map<sidechain_type, uint16_t> count_SON_votes_per_sidechain( const flat_set<vote_id_type>& votes )
{
flat_map<sidechain_type, uint16_t> SON_votes_per_sidechain = account_options::ext::empty_num_son();
for (const auto &vote : votes)
{
switch (vote.type())
{
case vote_id_type::son_bitcoin:
SON_votes_per_sidechain[sidechain_type::bitcoin]++;
break;
case vote_id_type::son_hive:
SON_votes_per_sidechain[sidechain_type::hive]++;
break;
case vote_id_type::son_ethereum:
SON_votes_per_sidechain[sidechain_type::ethereum]++;
break;
default:
break;
}
}
return SON_votes_per_sidechain;
}
void verify_account_votes( const database& db, const account_options& options, fc::optional<account_object> account = {} )
{
// ensure account's votes satisfy requirements
// NB only the part of vote checking that requires chain state is here,
// the rest occurs in account_options::validate()
const auto& gpo = db.get_global_properties();
const auto& chain_params = gpo.parameters;
FC_ASSERT( db.find_object(options.voting_account), "Invalid proxy account specified." );
FC_ASSERT( options.num_witness <= chain_params.maximum_witness_count,
"Voted for more witnesses than currently allowed (${c})", ("c", chain_params.maximum_witness_count) );
FC_ASSERT( options.num_committee <= chain_params.maximum_committee_count,
"Voted for more committee members than currently allowed (${c})", ("c", chain_params.maximum_committee_count) );
FC_ASSERT( chain_params.extensions.value.maximum_son_count.valid() , "Invalid maximum son count" );
flat_map<sidechain_type, uint16_t> merged_num_sons = account_options::ext::empty_num_son();
// Merge with existing account if exists
if ( account.valid() && account->options.extensions.value.num_son.valid())
{
merge_num_sons( merged_num_sons, *account->options.extensions.value.num_son, db.head_block_time() );
}
// Apply update operation on top
if ( options.extensions.value.num_son.valid() )
{
merge_num_sons( merged_num_sons, *options.extensions.value.num_son, db.head_block_time() );
}
for(const auto& num_sons : merged_num_sons)
{
FC_ASSERT( num_sons.second <= *chain_params.extensions.value.maximum_son_count,
"Voted for more sons than currently allowed (${c})", ("c", *chain_params.extensions.value.maximum_son_count) );
}
// Count the votes for SONs and confirm that the account did not vote for less SONs than num_son
flat_map<sidechain_type, uint16_t> SON_votes_per_sidechain = count_SON_votes_per_sidechain(options.votes);
for (const auto& number_of_votes : SON_votes_per_sidechain)
{
// Number of votes of account_options are also checked in account_options::do_evaluate,
// but there we are checking the value before merging num_sons, so the values should be checked again
const auto sidechain = number_of_votes.first;
FC_ASSERT( number_of_votes.second >= merged_num_sons[sidechain],
"Voted for less sons than specified in num_son (votes ${v} < num_son ${ns}) for sidechain ${s}",
("v", number_of_votes.second) ("ns", merged_num_sons[sidechain]) ("s", sidechain) );
}
FC_ASSERT( db.find_object(options.voting_account), "Invalid proxy account specified." );
uint32_t max_vote_id = gpo.next_available_vote_id;
bool has_worker_votes = false;
for( auto id : options.votes )
{
FC_ASSERT( id < max_vote_id );
has_worker_votes |= (id.type() == vote_id_type::worker);
}
if( has_worker_votes && (db.head_block_time() >= HARDFORK_607_TIME) )
{
const auto& against_worker_idx = db.get_index_type<worker_index>().indices().get<by_vote_against>();
for( auto id : options.votes )
{
if( id.type() == vote_id_type::worker )
{
FC_ASSERT( against_worker_idx.find( id ) == against_worker_idx.end() );
}
}
}
}
void_result account_create_evaluator::do_evaluate( const account_create_operation& op )
{ try {
database& d = db();
if( d.head_block_time() < HARDFORK_516_TIME )
{
FC_ASSERT( !op.extensions.value.owner_special_authority.valid() );
FC_ASSERT( !op.extensions.value.active_special_authority.valid() );
}
if( d.head_block_time() < HARDFORK_599_TIME )
{
FC_ASSERT( !op.extensions.value.null_ext.valid() );
FC_ASSERT( !op.extensions.value.owner_special_authority.valid() );
FC_ASSERT( !op.extensions.value.active_special_authority.valid() );
FC_ASSERT( !op.extensions.value.buyback_options.valid() );
}
if( d.head_block_time() < HARDFORK_999_TIME )
FC_ASSERT( !op.extensions.value.affiliate_distributions.valid(), "Affiliate reward distributions not allowed yet" );
if (d.head_block_time() < HARDFORK_SON_TIME)
FC_ASSERT(op.name != "son-account", "Son account creation before SON hardfork");
FC_ASSERT( fee_paying_account->is_lifetime_member(), "Only Lifetime members may register an account." );
FC_ASSERT( op.referrer(d).is_member(d.head_block_time()), "The referrer must be either a lifetime or annual subscriber." );
try
{
verify_authority_accounts( d, op.owner );
verify_authority_accounts( d, op.active );
}
GRAPHENE_RECODE_EXC( internal_verify_auth_max_auth_exceeded, account_create_max_auth_exceeded )
GRAPHENE_RECODE_EXC( internal_verify_auth_account_not_found, account_create_auth_account_not_found )
if( op.extensions.value.owner_special_authority.valid() )
evaluate_special_authority( d, *op.extensions.value.owner_special_authority );
if( op.extensions.value.active_special_authority.valid() )
evaluate_special_authority( d, *op.extensions.value.active_special_authority );
if( op.extensions.value.buyback_options.valid() )
evaluate_buyback_account_options( d, *op.extensions.value.buyback_options );
verify_account_votes( d, op.options );
auto& acnt_indx = d.get_index_type<account_index>();
if( op.name.size() )
{
auto current_account_itr = acnt_indx.indices().get<by_name>().find( op.name );
FC_ASSERT( current_account_itr == acnt_indx.indices().get<by_name>().end() );
}
return void_result();
} FC_CAPTURE_AND_RETHROW( (op) ) }
object_id_type account_create_evaluator::do_apply( const account_create_operation& o )
{ try {
database& d = db();
uint16_t referrer_percent = o.referrer_percent;
bool has_small_percent = (
(db().head_block_time() <= HARDFORK_453_TIME)
&& (o.referrer != o.registrar )
&& (o.referrer_percent != 0 )
&& (o.referrer_percent <= 0x100)
);
if( has_small_percent )
{
if( referrer_percent >= 100 )
{
wlog( "between 100% and 0x100%: ${o}", ("o", o) );
}
referrer_percent = referrer_percent*100;
if( referrer_percent > GRAPHENE_100_PERCENT )
referrer_percent = GRAPHENE_100_PERCENT;
}
const auto& global_properties = d.get_global_properties();
const auto& new_acnt_object = d.create<account_object>( [&o,&d,&global_properties,referrer_percent]( account_object& obj )
{
obj.registrar = o.registrar;
obj.referrer = o.referrer;
obj.lifetime_referrer = o.referrer(d).lifetime_referrer;
const auto& params = global_properties.parameters;
obj.network_fee_percentage = params.network_percent_of_fee;
obj.lifetime_referrer_fee_percentage = params.lifetime_referrer_percent_of_fee;
obj.referrer_rewards_percentage = referrer_percent;
obj.name = o.name;
obj.owner = o.owner;
obj.active = o.active;
obj.options = o.options;
obj.options.extensions.value.num_son = account_options::ext::empty_num_son();
if ( o.options.extensions.value.num_son.valid() )
{
merge_num_sons( *obj.options.extensions.value.num_son, *o.options.extensions.value.num_son );
}
obj.statistics = d.create<account_statistics_object>([&obj](account_statistics_object& s){
s.owner = obj.id;
s.name = obj.name;
s.is_voting = obj.options.is_voting();
}).id;
if( o.extensions.value.owner_special_authority.valid() )
obj.owner_special_authority = *(o.extensions.value.owner_special_authority);
if( o.extensions.value.active_special_authority.valid() )
obj.active_special_authority = *(o.extensions.value.active_special_authority);
if( o.extensions.value.buyback_options.valid() )
{
obj.allowed_assets = o.extensions.value.buyback_options->markets;
obj.allowed_assets->emplace( o.extensions.value.buyback_options->asset_to_buy );
}
obj.affiliate_distributions = o.extensions.value.affiliate_distributions;
});
if( has_small_percent )
{
wlog( "Account affected by #453 registered in block ${n}: ${na} reg=${reg} ref=${ref}:${refp} ltr=${ltr}:${ltrp}",
("n", db().head_block_num()) ("na", new_acnt_object.id)
("reg", o.registrar) ("ref", o.referrer) ("ltr", new_acnt_object.lifetime_referrer)
("refp", new_acnt_object.referrer_rewards_percentage) ("ltrp", new_acnt_object.lifetime_referrer_fee_percentage) );
wlog( "Affected account object is ${o}", ("o", new_acnt_object) );
}
const auto& dynamic_properties = d.get_dynamic_global_properties();
d.modify(dynamic_properties, [](dynamic_global_property_object& p) {
++p.accounts_registered_this_interval;
});
if( dynamic_properties.accounts_registered_this_interval % global_properties.parameters.accounts_per_fee_scale == 0
&& global_properties.parameters.account_fee_scale_bitshifts != 0 )
{
d.modify(global_properties, [&dynamic_properties](global_property_object& p) {
p.parameters.current_fees->get<account_create_operation>().basic_fee <<= p.parameters.account_fee_scale_bitshifts;
});
}
if( o.extensions.value.owner_special_authority.valid()
|| o.extensions.value.active_special_authority.valid() )
{
db().create< special_authority_object >( [&]( special_authority_object& sa )
{
sa.account = new_acnt_object.id;
} );
}
if( o.extensions.value.buyback_options.valid() )
{
asset_id_type asset_to_buy = o.extensions.value.buyback_options->asset_to_buy;
d.create< buyback_object >( [&]( buyback_object& bo )
{
bo.asset_to_buy = asset_to_buy;
} );
d.modify( asset_to_buy(d), [&]( asset_object& a )
{
a.buyback_account = new_acnt_object.id;
} );
}
return new_acnt_object.id;
} FC_CAPTURE_AND_RETHROW((o)) }
void_result account_update_evaluator::do_evaluate( const account_update_operation& o )
{ try {
database& d = db();
if( d.head_block_time() < HARDFORK_516_TIME )
{
FC_ASSERT( !o.extensions.value.owner_special_authority.valid() );
FC_ASSERT( !o.extensions.value.active_special_authority.valid() );
}
if( d.head_block_time() < HARDFORK_599_TIME )
{
FC_ASSERT( !o.extensions.value.null_ext.valid() );
FC_ASSERT( !o.extensions.value.owner_special_authority.valid() );
FC_ASSERT( !o.extensions.value.active_special_authority.valid() );
}
try
{
if( o.owner ) verify_authority_accounts( d, *o.owner );
if( o.active ) verify_authority_accounts( d, *o.active );
}
GRAPHENE_RECODE_EXC( internal_verify_auth_max_auth_exceeded, account_update_max_auth_exceeded )
GRAPHENE_RECODE_EXC( internal_verify_auth_account_not_found, account_update_auth_account_not_found )
if( o.extensions.value.owner_special_authority.valid() )
evaluate_special_authority( d, *o.extensions.value.owner_special_authority );
if( o.extensions.value.active_special_authority.valid() )
evaluate_special_authority( d, *o.extensions.value.active_special_authority );
acnt = &o.account(d);
if( o.new_options.valid() )
verify_account_votes( d, *o.new_options, *acnt );
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result account_update_evaluator::do_apply( const account_update_operation& o )
{ try {
database& d = db();
bool sa_before = acnt->has_special_authority();
// update account statistics
if( o.new_options.valid() )
{
d.modify( acnt->statistics( d ), [&]( account_statistics_object& aso )
{
fc::optional< bool > flag = o.extensions.value.update_last_voting_time;
if((o.new_options->votes != acnt->options.votes ||
o.new_options->voting_account != acnt->options.voting_account) ||
(flag.valid() && *flag))
aso.last_vote_time = d.head_block_time();
if(o.new_options->is_voting() != acnt->options.is_voting())
aso.is_voting = !aso.is_voting;
} );
}
// update account object
d.modify( *acnt, [&o](account_object& a){
if( o.owner )
{
a.owner = *o.owner;
a.top_n_control_flags = 0;
}
if( o.active )
{
a.active = *o.active;
a.top_n_control_flags = 0;
}
// New num_son structure initialized to 0
flat_map<sidechain_type, uint16_t> new_num_son = account_options::ext::empty_num_son();
// If num_son of existing object is valid, we should merge the existing data
if ( a.options.extensions.value.num_son.valid() )
{
merge_num_sons( new_num_son, *a.options.extensions.value.num_son );
}
// If num_son of the operation are valid, they should merge the existing data
if ( o.new_options )
{
const auto new_options = *o.new_options;
if ( new_options.extensions.value.num_son.valid() )
{
merge_num_sons( new_num_son, *new_options.extensions.value.num_son );
}
a.options = *o.new_options;
}
a.options.extensions.value.num_son = new_num_son;
if( o.extensions.value.owner_special_authority.valid() )
{
a.owner_special_authority = *(o.extensions.value.owner_special_authority);
a.top_n_control_flags = 0;
}
if( o.extensions.value.active_special_authority.valid() )
{
a.active_special_authority = *(o.extensions.value.active_special_authority);
a.top_n_control_flags = 0;
}
});
bool sa_after = acnt->has_special_authority();
if( sa_before & (!sa_after) )
{
const auto& sa_idx = d.get_index_type< special_authority_index >().indices().get<by_account>();
auto sa_it = sa_idx.find( o.account );
assert( sa_it != sa_idx.end() );
d.remove( *sa_it );
}
else if( (!sa_before) & sa_after )
{
d.create< special_authority_object >( [&]( special_authority_object& sa )
{
sa.account = o.account;
} );
}
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result account_whitelist_evaluator::do_evaluate(const account_whitelist_operation& o)
{ try {
database& d = db();
listed_account = &o.account_to_list(d);
if( !d.get_global_properties().parameters.allow_non_member_whitelists )
FC_ASSERT(o.authorizing_account(d).is_lifetime_member());
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result account_whitelist_evaluator::do_apply(const account_whitelist_operation& o)
{ try {
database& d = db();
d.modify(*listed_account, [&o](account_object& a) {
if( o.new_listing & o.white_listed )
a.whitelisting_accounts.insert(o.authorizing_account);
else
a.whitelisting_accounts.erase(o.authorizing_account);
if( o.new_listing & o.black_listed )
a.blacklisting_accounts.insert(o.authorizing_account);
else
a.blacklisting_accounts.erase(o.authorizing_account);
});
/** for tracking purposes only, this state is not needed to evaluate */
d.modify( o.authorizing_account(d), [&]( account_object& a ) {
if( o.new_listing & o.white_listed )
a.whitelisted_accounts.insert( o.account_to_list );
else
a.whitelisted_accounts.erase( o.account_to_list );
if( o.new_listing & o.black_listed )
a.blacklisted_accounts.insert( o.account_to_list );
else
a.blacklisted_accounts.erase( o.account_to_list );
});
return void_result();
} FC_CAPTURE_AND_RETHROW( (o) ) }
void_result account_upgrade_evaluator::do_evaluate(const account_upgrade_evaluator::operation_type& o)
{ try {
database& d = db();
account = &d.get(o.account_to_upgrade);
FC_ASSERT(!account->is_lifetime_member());
return {};
//} FC_CAPTURE_AND_RETHROW( (o) ) }
} FC_RETHROW_EXCEPTIONS( error, "Unable to upgrade account '${a}'", ("a",o.account_to_upgrade(db()).name) ) }
void_result account_upgrade_evaluator::do_apply(const account_upgrade_evaluator::operation_type& o)
{ try {
database& d = db();
d.modify(*account, [&](account_object& a) {
if( o.upgrade_to_lifetime_member )
{
// Upgrade to lifetime member. I don't care what the account was before.
a.statistics(d).process_fees(a, d);
a.membership_expiration_date = time_point_sec::maximum();
a.referrer = a.registrar = a.lifetime_referrer = a.get_id();
a.lifetime_referrer_fee_percentage = GRAPHENE_100_PERCENT - a.network_fee_percentage;
} else if( a.is_annual_member(d.head_block_time()) ) {
// Renew an annual subscription that's still in effect.
FC_ASSERT( d.head_block_time() <= HARDFORK_613_TIME );
FC_ASSERT(a.membership_expiration_date - d.head_block_time() < fc::days(3650),
"May not extend annual membership more than a decade into the future.");
a.membership_expiration_date += fc::days(365);
} else {
// Upgrade from basic account.
FC_ASSERT( d.head_block_time() <= HARDFORK_613_TIME );
a.statistics(d).process_fees(a, d);
assert(a.is_basic_account(d.head_block_time()));
a.referrer = a.get_id();
a.membership_expiration_date = d.head_block_time() + fc::days(365);
}
});
return {};
} FC_RETHROW_EXCEPTIONS( error, "Unable to upgrade account '${a}'", ("a",o.account_to_upgrade(db()).name) ) }
} } // graphene::chain