/
steem_evaluator.cpp
1634 lines (1337 loc) · 59.2 KB
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steem_evaluator.cpp
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#include <smoke/chain/steem_evaluator.hpp>
#include <smoke/chain/database.hpp>
#include <smoke/chain/custom_operation_interpreter.hpp>
#include <smoke/chain/steem_objects.hpp>
#include <smoke/chain/witness_objects.hpp>
#include <smoke/chain/block_summary_object.hpp>
#include <smoke/chain/util/reward.hpp>
#ifndef IS_LOW_MEM
#include <diff_match_patch.h>
#include <boost/locale/encoding_utf.hpp>
using boost::locale::conv::utf_to_utf;
std::wstring utf8_to_wstring(const std::string& str)
{
return utf_to_utf<wchar_t>(str.c_str(), str.c_str() + str.size());
}
std::string wstring_to_utf8(const std::wstring& str)
{
return utf_to_utf<char>(str.c_str(), str.c_str() + str.size());
}
#endif
#include <fc/uint128.hpp>
#include <fc/utf8.hpp>
#include <limits>
namespace smoke { namespace chain {
using fc::uint128_t;
inline void validate_permlink_0_1( const string& permlink )
{
FC_ASSERT( permlink.size() > SMOKE_MIN_PERMLINK_LENGTH && permlink.size() < SMOKE_MAX_PERMLINK_LENGTH, "Permlink is not a valid size." );
for( auto c : permlink )
{
switch( c )
{
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f': case 'g': case 'h': case 'i':
case 'j': case 'k': case 'l': case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x': case 'y': case 'z': case '0':
case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9':
case '-':
break;
default:
FC_ASSERT( false, "Invalid permlink character: ${s}", ("s", std::string() + c ) );
}
}
}
struct strcmp_equal
{
bool operator()( const shared_string& a, const string& b )
{
return a.size() == b.size() || std::strcmp( a.c_str(), b.c_str() ) == 0;
}
};
void witness_update_evaluator::do_apply( const witness_update_operation& o )
{
_db.get_account( o.owner ); // verify owner exists
FC_ASSERT( o.url.size() <= SMOKE_MAX_WITNESS_URL_LENGTH, "URL is too long" );
FC_ASSERT( o.props.account_creation_fee.symbol == SMOKE_SYMBOL );
// #pragma message( "TODO: This needs to be part of HF 20 and moved to validate if not triggered in previous blocks" )
if( _db.is_producing() )
{
FC_ASSERT( o.props.maximum_block_size <= SMOKE_SOFT_MAX_BLOCK_SIZE, "Max block size cannot be more than 2MiB" );
}
const auto& by_witness_name_idx = _db.get_index< witness_index >().indices().get< by_name >();
auto wit_itr = by_witness_name_idx.find( o.owner );
if( wit_itr != by_witness_name_idx.end() )
{
_db.modify( *wit_itr, [&]( witness_object& w ) {
from_string( w.url, o.url );
w.signing_key = o.block_signing_key;
w.props = o.props;
});
}
else
{
_db.create< witness_object >( [&]( witness_object& w ) {
w.owner = o.owner;
from_string( w.url, o.url );
w.signing_key = o.block_signing_key;
w.created = _db.head_block_time();
w.props = o.props;
});
}
}
void account_create_evaluator::do_apply( const account_create_operation& o )
{
#ifndef IS_TEST_NET
FC_ASSERT( o.creator == SMOKE_SMOKE_ACCOUNT, "only smoke account can create new account this period." );
#endif
const auto& creator = _db.get_account( o.creator );
const auto& props = _db.get_dynamic_global_properties();
FC_ASSERT( creator.balance >= o.fee, "Insufficient balance to create account.", ( "creator.balance", creator.balance )( "required", o.fee ) );
#ifndef IS_TEST_NET
// const witness_schedule_object& wso = _db.get_witness_schedule_object();
FC_ASSERT( o.fee >= asset( SMOKE_MIN_ACCOUNT_CREATION_FEE, SMOKE_SYMBOL ), "Insufficient Fee: ${f} required, ${p} provided.",
("f", asset( SMOKE_MIN_ACCOUNT_CREATION_FEE, SMOKE_SYMBOL ) )
("p", o.fee) );
#endif
for( auto& a : o.owner.account_auths )
{
_db.get_account( a.first );
}
for( auto& a : o.active.account_auths )
{
_db.get_account( a.first );
}
for( auto& a : o.posting.account_auths )
{
_db.get_account( a.first );
}
_db.modify( creator, [&]( account_object& c ){
c.balance -= o.fee;
});
const auto& new_account = _db.create< account_object >( [&]( account_object& acc )
{
acc.name = o.new_account_name;
acc.memo_key = o.memo_key;
acc.created = props.time;
acc.last_vote_time = props.time;
acc.mined = false;
acc.recovery_account = o.creator;
#ifndef IS_LOW_MEM
from_string( acc.json_metadata, o.json_metadata );
#endif
});
_db.create< account_authority_object >( [&]( account_authority_object& auth )
{
auth.account = o.new_account_name;
auth.owner = o.owner;
auth.active = o.active;
auth.posting = o.posting;
auth.last_owner_update = fc::time_point_sec::min();
});
if( o.fee.amount > 0 )
_db.create_vesting( new_account, o.fee );
}
void account_create_with_delegation_evaluator::do_apply( const account_create_with_delegation_operation& o )
{
#ifndef IS_TEST_NET
FC_ASSERT( false, "This operation disabled temporary." );
#endif
const auto& creator = _db.get_account( o.creator );
const auto& props = _db.get_dynamic_global_properties();
const witness_schedule_object& wso = _db.get_witness_schedule_object();
FC_ASSERT( creator.balance >= o.fee, "Insufficient balance to create account.",
( "creator.balance", creator.balance )
( "required", o.fee ) );
FC_ASSERT( creator.vesting_shares - creator.delegated_vesting_shares - asset( creator.to_withdraw - creator.withdrawn, VESTS_SYMBOL ) >= o.delegation, "Insufficient vesting shares to delegate to new account.",
( "creator.vesting_shares", creator.vesting_shares )
( "creator.delegated_vesting_shares", creator.delegated_vesting_shares )( "required", o.delegation ) );
auto target_delegation = asset( wso.median_props.account_creation_fee.amount * SMOKE_CREATE_ACCOUNT_WITH_STEEM_MODIFIER * SMOKE_CREATE_ACCOUNT_DELEGATION_RATIO, SMOKE_SYMBOL ) * props.get_vesting_share_price();
auto current_delegation = asset( o.fee.amount * SMOKE_CREATE_ACCOUNT_DELEGATION_RATIO, SMOKE_SYMBOL ) * props.get_vesting_share_price() + o.delegation;
FC_ASSERT( current_delegation >= target_delegation, "Inssufficient Delegation ${f} required, ${p} provided.",
("f", target_delegation )
( "p", current_delegation )
( "account_creation_fee", wso.median_props.account_creation_fee )
( "o.fee", o.fee )
( "o.delegation", o.delegation ) );
FC_ASSERT( o.fee >= wso.median_props.account_creation_fee, "Insufficient Fee: ${f} required, ${p} provided.",
("f", wso.median_props.account_creation_fee)
("p", o.fee) );
for( auto& a : o.owner.account_auths )
{
_db.get_account( a.first );
}
for( auto& a : o.active.account_auths )
{
_db.get_account( a.first );
}
for( auto& a : o.posting.account_auths )
{
_db.get_account( a.first );
}
_db.modify( creator, [&]( account_object& c )
{
c.balance -= o.fee;
c.delegated_vesting_shares += o.delegation;
});
const auto& new_account = _db.create< account_object >( [&]( account_object& acc )
{
acc.name = o.new_account_name;
acc.memo_key = o.memo_key;
acc.created = props.time;
acc.last_vote_time = props.time;
acc.mined = false;
acc.recovery_account = o.creator;
acc.received_vesting_shares = o.delegation;
#ifndef IS_LOW_MEM
from_string( acc.json_metadata, o.json_metadata );
#endif
});
_db.create< account_authority_object >( [&]( account_authority_object& auth )
{
auth.account = o.new_account_name;
auth.owner = o.owner;
auth.active = o.active;
auth.posting = o.posting;
auth.last_owner_update = fc::time_point_sec::min();
});
if( o.delegation.amount > 0 )
{
_db.create< vesting_delegation_object >( [&]( vesting_delegation_object& vdo )
{
vdo.delegator = o.creator;
vdo.delegatee = o.new_account_name;
vdo.vesting_shares = o.delegation;
vdo.min_delegation_time = _db.head_block_time() + SMOKE_CREATE_ACCOUNT_DELEGATION_TIME;
});
}
if( o.fee.amount > 0 )
_db.create_vesting( new_account, o.fee );
}
void account_update_evaluator::do_apply( const account_update_operation& o )
{
FC_ASSERT( o.account != SMOKE_TEMP_ACCOUNT, "Cannot update temp account." );
if( o.posting )
o.posting->validate();
const auto& account = _db.get_account( o.account );
const auto& account_auth = _db.get< account_authority_object, by_account >( o.account );
if( o.owner )
{
#ifndef IS_TEST_NET
FC_ASSERT( _db.head_block_time() - account_auth.last_owner_update > SMOKE_OWNER_UPDATE_LIMIT, "Owner authority can only be updated once an hour." );
#endif
for( auto a: o.owner->account_auths )
{
_db.get_account( a.first );
}
_db.update_owner_authority( account, *o.owner );
}
if( o.active )
{
for( auto a: o.active->account_auths )
{
_db.get_account( a.first );
}
}
if( o.posting )
{
for( auto a: o.posting->account_auths )
{
_db.get_account( a.first );
}
}
_db.modify( account, [&]( account_object& acc )
{
if( o.memo_key != public_key_type() )
acc.memo_key = o.memo_key;
if( ( o.active || o.owner ) && acc.active_challenged )
{
acc.active_challenged = false;
acc.last_active_proved = _db.head_block_time();
}
acc.last_account_update = _db.head_block_time();
#ifndef IS_LOW_MEM
if ( o.json_metadata.size() > 0 )
from_string( acc.json_metadata, o.json_metadata );
#endif
});
if( o.active || o.posting )
{
_db.modify( account_auth, [&]( account_authority_object& auth)
{
if( o.active ) auth.active = *o.active;
if( o.posting ) auth.posting = *o.posting;
});
}
}
/**
* Because net_rshares is 0 there is no need to update any pending payout calculations or parent posts.
*/
void delete_comment_evaluator::do_apply( const delete_comment_operation& o )
{
const auto& auth = _db.get_account( o.author );
FC_ASSERT( !(auth.owner_challenged || auth.active_challenged ), "Operation cannot be processed because account is currently challenged." );
const auto& comment = _db.get_comment( o.author, o.permlink );
FC_ASSERT( comment.children == 0, "Cannot delete a comment with replies." );
FC_ASSERT( comment.cashout_time != fc::time_point_sec::maximum() );
FC_ASSERT( comment.net_rshares <= 0, "Cannot delete a comment with net positive votes." );
if( comment.net_rshares > 0 ) return;
const auto& vote_idx = _db.get_index<comment_vote_index>().indices().get<by_comment_voter>();
auto vote_itr = vote_idx.lower_bound( comment_id_type(comment.id) );
while( vote_itr != vote_idx.end() && vote_itr->comment == comment.id ) {
const auto& cur_vote = *vote_itr;
++vote_itr;
_db.remove(cur_vote);
}
/// this loop can be skiped for validate-only nodes as it is merely gathering stats for indicies
if( comment.parent_author != SMOKE_ROOT_POST_PARENT )
{
auto parent = &_db.get_comment( comment.parent_author, comment.parent_permlink );
auto now = _db.head_block_time();
while( parent )
{
_db.modify( *parent, [&]( comment_object& p ){
p.children--;
p.active = now;
});
#ifndef IS_LOW_MEM
if( parent->parent_author != SMOKE_ROOT_POST_PARENT )
parent = &_db.get_comment( parent->parent_author, parent->parent_permlink );
else
#endif
parent = nullptr;
}
}
_db.remove( comment );
}
struct comment_options_extension_visitor
{
comment_options_extension_visitor( const comment_object& c, database& db ) : _c( c ), _db( db ) {}
typedef void result_type;
const comment_object& _c;
database& _db;
void operator()( const comment_payout_beneficiaries& cpb ) const
{
FC_ASSERT( _c.beneficiaries.size() == 0, "Comment already has beneficiaries specified." );
FC_ASSERT( _c.abs_rshares == 0, "Comment must not have been voted on before specifying beneficiaries." );
_db.modify( _c, [&]( comment_object& c )
{
for( auto& b : cpb.beneficiaries )
{
auto acc = _db.find< account_object, by_name >( b.account );
FC_ASSERT( acc != nullptr, "Beneficiary \"${a}\" must exist.", ("a", b.account) );
c.beneficiaries.push_back( b );
}
});
}
};
void comment_options_evaluator::do_apply( const comment_options_operation& o )
{
const auto& auth = _db.get_account( o.author );
FC_ASSERT( !(auth.owner_challenged || auth.active_challenged ), "Operation cannot be processed because account is currently challenged." );
const auto& comment = _db.get_comment( o.author, o.permlink );
// SBD is disable, compare the amount only.
if( !o.allow_curation_rewards || !o.allow_votes || o.max_accepted_payout.amount < comment.max_accepted_payout.amount )
FC_ASSERT( comment.abs_rshares == 0, "One of the included comment options requires the comment to have no rshares allocated to it." );
FC_ASSERT( comment.allow_curation_rewards >= o.allow_curation_rewards, "Curation rewards cannot be re-enabled." );
FC_ASSERT( comment.allow_votes >= o.allow_votes, "Voting cannot be re-enabled." );
FC_ASSERT( comment.max_accepted_payout.amount.value >= o.max_accepted_payout.amount.value, "A comment cannot accept a greater payout." );
_db.modify( comment, [&]( comment_object& c ) {
c.max_accepted_payout = o.max_accepted_payout;
c.allow_votes = o.allow_votes;
c.allow_curation_rewards = o.allow_curation_rewards;
});
for( auto& e : o.extensions )
{
e.visit( comment_options_extension_visitor( comment, _db ) );
}
}
void comment_evaluator::do_apply( const comment_operation& o )
{ try {
FC_ASSERT( o.title.size() + o.body.size() + o.json_metadata.size(), "Cannot update comment because nothing appears to be changing." );
const auto& by_permlink_idx = _db.get_index< comment_index >().indices().get< by_permlink >();
auto itr = by_permlink_idx.find( boost::make_tuple( o.author, o.permlink ) );
const auto& auth = _db.get_account( o.author ); /// prove it exists
FC_ASSERT( !(auth.owner_challenged || auth.active_challenged ), "Operation cannot be processed because account is currently challenged." );
comment_id_type id;
const comment_object* parent = nullptr;
if( o.parent_author != SMOKE_ROOT_POST_PARENT )
{
parent = &_db.get_comment( o.parent_author, o.parent_permlink );
FC_ASSERT( parent->depth < SMOKE_MAX_COMMENT_DEPTH, "Comment is nested ${x} posts deep, maximum depth is ${y}.", ("x",parent->depth)("y",SMOKE_MAX_COMMENT_DEPTH) );
}
if( o.json_metadata.size() )
FC_ASSERT( fc::is_utf8( o.json_metadata ), "JSON Metadata must be UTF-8" );
auto now = _db.head_block_time();
if ( itr == by_permlink_idx.end() )
{
if( o.parent_author != SMOKE_ROOT_POST_PARENT )
{
FC_ASSERT( _db.get( parent->root_comment ).allow_replies, "The parent comment has disabled replies." );
}
if( o.parent_author == SMOKE_ROOT_POST_PARENT )
FC_ASSERT( ( now - auth.last_root_post ) > SMOKE_MIN_ROOT_COMMENT_INTERVAL, "You may only post once every 5 minutes.", ("now",now)("last_root_post", auth.last_root_post) );
else
FC_ASSERT( (now - auth.last_post) > SMOKE_MIN_REPLY_INTERVAL, "You may only comment once every 20 seconds.", ("now",now)("auth.last_post",auth.last_post) );
uint16_t reward_weight = SMOKE_100_PERCENT;
uint64_t post_bandwidth = auth.post_bandwidth;
_db.modify( auth, [&]( account_object& a ) {
if( o.parent_author == SMOKE_ROOT_POST_PARENT )
{
a.last_root_post = now;
a.post_bandwidth = uint32_t( post_bandwidth );
}
a.last_post = now;
a.post_count++;
});
const auto& new_comment = _db.create< comment_object >( [&]( comment_object& com )
{
validate_permlink_0_1( o.parent_permlink );
validate_permlink_0_1( o.permlink );
com.author = o.author;
from_string( com.permlink, o.permlink );
com.last_update = _db.head_block_time();
com.created = com.last_update;
com.active = com.last_update;
com.last_payout = fc::time_point_sec::min();
com.max_cashout_time = fc::time_point_sec::maximum();
com.reward_weight = reward_weight;
if ( o.parent_author == SMOKE_ROOT_POST_PARENT )
{
com.parent_author = "";
from_string( com.parent_permlink, o.parent_permlink );
from_string( com.category, o.parent_permlink );
com.root_comment = com.id;
}
else
{
com.parent_author = parent->author;
com.parent_permlink = parent->permlink;
com.depth = parent->depth + 1;
com.category = parent->category;
com.root_comment = parent->root_comment;
}
com.cashout_time = com.created + SMOKE_CASHOUT_WINDOW_SECONDS;
#ifndef IS_LOW_MEM
from_string( com.title, o.title );
if( o.body.size() < 1024*1024*128 )
{
from_string( com.body, o.body );
}
if( fc::is_utf8( o.json_metadata ) )
from_string( com.json_metadata, o.json_metadata );
else
wlog( "Comment ${a}/${p} contains invalid UTF-8 metadata", ("a", o.author)("p", o.permlink) );
#endif
});
id = new_comment.id;
/// this loop can be skiped for validate-only nodes as it is merely gathering stats for indicies
auto now = _db.head_block_time();
while( parent ) {
_db.modify( *parent, [&]( comment_object& p ){
p.children++;
p.active = now;
});
#ifndef IS_LOW_MEM
if( parent->parent_author != SMOKE_ROOT_POST_PARENT )
parent = &_db.get_comment( parent->parent_author, parent->parent_permlink );
else
#endif
parent = nullptr;
}
}
else // start edit case
{
const auto& comment = *itr;
_db.modify( comment, [&]( comment_object& com )
{
com.last_update = _db.head_block_time();
com.active = com.last_update;
strcmp_equal equal;
if( !parent )
{
FC_ASSERT( com.parent_author == account_name_type(), "The parent of a comment cannot change." );
FC_ASSERT( equal( com.parent_permlink, o.parent_permlink ), "The permlink of a comment cannot change." );
}
else
{
FC_ASSERT( com.parent_author == o.parent_author, "The parent of a comment cannot change." );
FC_ASSERT( equal( com.parent_permlink, o.parent_permlink ), "The permlink of a comment cannot change." );
}
#ifndef IS_LOW_MEM
if( o.title.size() ) from_string( com.title, o.title );
if( o.json_metadata.size() )
{
if( fc::is_utf8( o.json_metadata ) )
from_string( com.json_metadata, o.json_metadata );
else
wlog( "Comment ${a}/${p} contains invalid UTF-8 metadata", ("a", o.author)("p", o.permlink) );
}
if( o.body.size() ) {
try {
diff_match_patch<std::wstring> dmp;
auto patch = dmp.patch_fromText( utf8_to_wstring(o.body) );
if( patch.size() ) {
auto result = dmp.patch_apply( patch, utf8_to_wstring( to_string( com.body ) ) );
auto patched_body = wstring_to_utf8(result.first);
if( !fc::is_utf8( patched_body ) ) {
idump(("invalid utf8")(patched_body));
from_string( com.body, fc::prune_invalid_utf8(patched_body) );
} else { from_string( com.body, patched_body ); }
}
else { // replace
from_string( com.body, o.body );
}
} catch ( ... ) {
from_string( com.body, o.body );
}
}
#endif
});
} // end EDIT case
} FC_CAPTURE_AND_RETHROW( (o) ) }
void escrow_transfer_evaluator::do_apply( const escrow_transfer_operation& o )
{
try
{
const auto& from_account = _db.get_account(o.from);
_db.get_account(o.to);
_db.get_account(o.agent);
FC_ASSERT( o.ratification_deadline > _db.head_block_time(), "The escorw ratification deadline must be after head block time." );
FC_ASSERT( o.escrow_expiration > _db.head_block_time(), "The escrow expiration must be after head block time." );
asset steem_spent = o.steem_amount;
if( o.fee.symbol == SMOKE_SYMBOL )
steem_spent += o.fee;
FC_ASSERT( from_account.balance >= steem_spent, "Account cannot cover SMOKE costs of escrow. Required: ${r} Available: ${a}", ("r",steem_spent)("a",from_account.balance) );
_db.adjust_balance( from_account, -steem_spent );
_db.create<escrow_object>([&]( escrow_object& esc )
{
esc.escrow_id = o.escrow_id;
esc.from = o.from;
esc.to = o.to;
esc.agent = o.agent;
esc.ratification_deadline = o.ratification_deadline;
esc.escrow_expiration = o.escrow_expiration;
esc.steem_balance = o.steem_amount;
esc.pending_fee = o.fee;
});
}
FC_CAPTURE_AND_RETHROW( (o) )
}
void escrow_approve_evaluator::do_apply( const escrow_approve_operation& o )
{
try
{
const auto& escrow = _db.get_escrow( o.from, o.escrow_id );
FC_ASSERT( escrow.to == o.to, "Operation 'to' (${o}) does not match escrow 'to' (${e}).", ("o", o.to)("e", escrow.to) );
FC_ASSERT( escrow.agent == o.agent, "Operation 'agent' (${a}) does not match escrow 'agent' (${e}).", ("o", o.agent)("e", escrow.agent) );
FC_ASSERT( escrow.ratification_deadline >= _db.head_block_time(), "The escrow ratification deadline has passed. Escrow can no longer be ratified." );
bool reject_escrow = !o.approve;
if( o.who == o.to )
{
FC_ASSERT( !escrow.to_approved, "Account 'to' (${t}) has already approved the escrow.", ("t", o.to) );
if( !reject_escrow )
{
_db.modify( escrow, [&]( escrow_object& esc )
{
esc.to_approved = true;
});
}
}
if( o.who == o.agent )
{
FC_ASSERT( !escrow.agent_approved, "Account 'agent' (${a}) has already approved the escrow.", ("a", o.agent) );
if( !reject_escrow )
{
_db.modify( escrow, [&]( escrow_object& esc )
{
esc.agent_approved = true;
});
}
}
if( reject_escrow )
{
const auto& from_account = _db.get_account( o.from );
_db.adjust_balance( from_account, escrow.steem_balance );
_db.adjust_balance( from_account, escrow.pending_fee );
_db.remove( escrow );
}
else if( escrow.to_approved && escrow.agent_approved )
{
const auto& agent_account = _db.get_account( o.agent );
_db.adjust_balance( agent_account, escrow.pending_fee );
_db.modify( escrow, [&]( escrow_object& esc )
{
esc.pending_fee.amount = 0;
});
}
}
FC_CAPTURE_AND_RETHROW( (o) )
}
void escrow_dispute_evaluator::do_apply( const escrow_dispute_operation& o )
{
try
{
_db.get_account( o.from ); // Verify from account exists
const auto& e = _db.get_escrow( o.from, o.escrow_id );
FC_ASSERT( _db.head_block_time() < e.escrow_expiration, "Disputing the escrow must happen before expiration." );
FC_ASSERT( e.to_approved && e.agent_approved, "The escrow must be approved by all parties before a dispute can be raised." );
FC_ASSERT( !e.disputed, "The escrow is already under dispute." );
FC_ASSERT( e.to == o.to, "Operation 'to' (${o}) does not match escrow 'to' (${e}).", ("o", o.to)("e", e.to) );
FC_ASSERT( e.agent == o.agent, "Operation 'agent' (${a}) does not match escrow 'agent' (${e}).", ("o", o.agent)("e", e.agent) );
_db.modify( e, [&]( escrow_object& esc )
{
esc.disputed = true;
});
}
FC_CAPTURE_AND_RETHROW( (o) )
}
void escrow_release_evaluator::do_apply( const escrow_release_operation& o )
{
try
{
_db.get_account(o.from); // Verify from account exists
const auto& receiver_account = _db.get_account(o.receiver);
const auto& e = _db.get_escrow( o.from, o.escrow_id );
FC_ASSERT( e.steem_balance >= o.steem_amount, "Release amount exceeds escrow balance. Amount: ${a}, Balance: ${b}", ("a", o.steem_amount)("b", e.steem_balance) );
FC_ASSERT( e.to == o.to, "Operation 'to' (${o}) does not match escrow 'to' (${e}).", ("o", o.to)("e", e.to) );
FC_ASSERT( e.agent == o.agent, "Operation 'agent' (${a}) does not match escrow 'agent' (${e}).", ("o", o.agent)("e", e.agent) );
FC_ASSERT( o.receiver == e.from || o.receiver == e.to, "Funds must be released to 'from' (${f}) or 'to' (${t})", ("f", e.from)("t", e.to) );
FC_ASSERT( e.to_approved && e.agent_approved, "Funds cannot be released prior to escrow approval." );
// If there is a dispute regardless of expiration, the agent can release funds to either party
if( e.disputed )
{
FC_ASSERT( o.who == e.agent, "Only 'agent' (${a}) can release funds in a disputed escrow.", ("a", e.agent) );
}
else
{
FC_ASSERT( o.who == e.from || o.who == e.to, "Only 'from' (${f}) and 'to' (${t}) can release funds from a non-disputed escrow", ("f", e.from)("t", e.to) );
if( e.escrow_expiration > _db.head_block_time() )
{
// If there is no dispute and escrow has not expired, either party can release funds to the other.
if( o.who == e.from )
{
FC_ASSERT( o.receiver == e.to, "Only 'from' (${f}) can release funds to 'to' (${t}).", ("f", e.from)("t", e.to) );
}
else if( o.who == e.to )
{
FC_ASSERT( o.receiver == e.from, "Only 'to' (${t}) can release funds to 'from' (${t}).", ("f", e.from)("t", e.to) );
}
}
}
// If escrow expires and there is no dispute, either party can release funds to either party.
_db.adjust_balance( receiver_account, o.steem_amount );
_db.modify( e, [&]( escrow_object& esc )
{
esc.steem_balance -= o.steem_amount;
});
if( e.steem_balance.amount == 0 )
{
_db.remove( e );
}
}
FC_CAPTURE_AND_RETHROW( (o) )
}
void transfer_evaluator::do_apply( const transfer_operation& o )
{
const auto& from_account = _db.get_account(o.from);
const auto& to_account = _db.get_account(o.to);
if( from_account.active_challenged )
{
_db.modify( from_account, [&]( account_object& a )
{
a.active_challenged = false;
a.last_active_proved = _db.head_block_time();
});
}
FC_ASSERT( _db.get_balance( from_account, o.amount.symbol ) >= o.amount, "Account does not have sufficient funds for transfer." );
_db.adjust_balance( from_account, -o.amount );
_db.adjust_balance( to_account, o.amount );
}
void transfer_to_vesting_evaluator::do_apply( const transfer_to_vesting_operation& o )
{
const auto& from_account = _db.get_account(o.from);
const auto& to_account = o.to.size() ? _db.get_account(o.to) : from_account;
FC_ASSERT( _db.get_balance( from_account, SMOKE_SYMBOL) >= o.amount, "Account does not have sufficient SMOKE for transfer." );
_db.adjust_balance( from_account, -o.amount );
_db.create_vesting( to_account, o.amount );
}
void withdraw_vesting_evaluator::do_apply( const withdraw_vesting_operation& o )
{
const auto& account = _db.get_account( o.account );
if( o.vesting_shares.amount < 0 )
{
FC_ASSERT( false, "Cannot withdraw negative VESTS. account: ${account}, vests:${vests}",
("account", o.account)("vests", o.vesting_shares) );
// else, no-op
return;
}
FC_ASSERT( account.vesting_shares >= asset( 0, VESTS_SYMBOL ), "Account does not have sufficient Power for withdraw." );
FC_ASSERT( account.vesting_shares - account.delegated_vesting_shares >= o.vesting_shares, "Account does not have sufficient Power for withdraw." );
if( !account.mined )
{
const auto& props = _db.get_dynamic_global_properties();
const witness_schedule_object& wso = _db.get_witness_schedule_object();
asset min_vests = wso.median_props.account_creation_fee * props.get_vesting_share_price();
min_vests.amount.value *= 10;
FC_ASSERT( account.vesting_shares > min_vests || ( o.vesting_shares.amount == 0 ),
"Account registered by another account requires 10x account creation fee worth of Power before it can be powered down." );
}
if( o.vesting_shares.amount == 0 )
{
FC_ASSERT( account.vesting_withdraw_rate.amount != 0, "This operation would not change the vesting withdraw rate." );
_db.modify( account, [&]( account_object& a ) {
a.vesting_withdraw_rate = asset( 0, VESTS_SYMBOL );
a.next_vesting_withdrawal = time_point_sec::maximum();
a.to_withdraw = 0;
a.withdrawn = 0;
});
}
else
{
int vesting_withdraw_intervals = SMOKE_VESTING_WITHDRAW_INTERVALS; /// 13 weeks = 1 quarter of a year
_db.modify( account, [&]( account_object& a )
{
auto new_vesting_withdraw_rate = asset( o.vesting_shares.amount / vesting_withdraw_intervals, VESTS_SYMBOL );
if( new_vesting_withdraw_rate.amount == 0 )
new_vesting_withdraw_rate.amount = 1;
FC_ASSERT( account.vesting_withdraw_rate != new_vesting_withdraw_rate, "This operation would not change the vesting withdraw rate." );
a.vesting_withdraw_rate = new_vesting_withdraw_rate;
a.next_vesting_withdrawal = _db.head_block_time() + fc::seconds(SMOKE_VESTING_WITHDRAW_INTERVAL_SECONDS);
a.to_withdraw = o.vesting_shares.amount;
a.withdrawn = 0;
});
}
}
void set_withdraw_vesting_route_evaluator::do_apply( const set_withdraw_vesting_route_operation& o )
{
try
{
const auto& from_account = _db.get_account( o.from_account );
const auto& to_account = _db.get_account( o.to_account );
const auto& wd_idx = _db.get_index< withdraw_vesting_route_index >().indices().get< by_withdraw_route >();
auto itr = wd_idx.find( boost::make_tuple( from_account.id, to_account.id ) );
if( itr == wd_idx.end() )
{
FC_ASSERT( o.percent != 0, "Cannot create a 0% destination." );
FC_ASSERT( from_account.withdraw_routes < SMOKE_MAX_WITHDRAW_ROUTES, "Account already has the maximum number of routes." );
_db.create< withdraw_vesting_route_object >( [&]( withdraw_vesting_route_object& wvdo )
{
wvdo.from_account = from_account.id;
wvdo.to_account = to_account.id;
wvdo.percent = o.percent;
wvdo.auto_vest = o.auto_vest;
});
_db.modify( from_account, [&]( account_object& a )
{
a.withdraw_routes++;
});
}
else if( o.percent == 0 )
{
_db.remove( *itr );
_db.modify( from_account, [&]( account_object& a )
{
a.withdraw_routes--;
});
}
else
{
_db.modify( *itr, [&]( withdraw_vesting_route_object& wvdo )
{
wvdo.from_account = from_account.id;
wvdo.to_account = to_account.id;
wvdo.percent = o.percent;
wvdo.auto_vest = o.auto_vest;
});
}
itr = wd_idx.upper_bound( boost::make_tuple( from_account.id, account_id_type() ) );
uint16_t total_percent = 0;
while( itr->from_account == from_account.id && itr != wd_idx.end() )
{
total_percent += itr->percent;
++itr;
}
FC_ASSERT( total_percent <= SMOKE_100_PERCENT, "More than 100% of vesting withdrawals allocated to destinations." );
}
FC_CAPTURE_AND_RETHROW()
}
void account_witness_proxy_evaluator::do_apply( const account_witness_proxy_operation& o )
{
const auto& account = _db.get_account( o.account );
FC_ASSERT( account.proxy != o.proxy, "Proxy must change." );
FC_ASSERT( account.can_vote, "Account has declined the ability to vote and cannot proxy votes." );
/// remove all current votes
std::array<share_type, SMOKE_MAX_PROXY_RECURSION_DEPTH+1> delta;
delta[0] = -account.vesting_shares.amount;
for( int i = 0; i < SMOKE_MAX_PROXY_RECURSION_DEPTH; ++i )
delta[i+1] = -account.proxied_vsf_votes[i];
_db.adjust_proxied_witness_votes( account, delta );
if( o.proxy.size() ) {
const auto& new_proxy = _db.get_account( o.proxy );
flat_set<account_id_type> proxy_chain( { account.id, new_proxy.id } );
proxy_chain.reserve( SMOKE_MAX_PROXY_RECURSION_DEPTH + 1 );
/// check for proxy loops and fail to update the proxy if it would create a loop
auto cprox = &new_proxy;
while( cprox->proxy.size() != 0 ) {
const auto next_proxy = _db.get_account( cprox->proxy );
FC_ASSERT( proxy_chain.insert( next_proxy.id ).second, "This proxy would create a proxy loop." );
cprox = &next_proxy;
FC_ASSERT( proxy_chain.size() <= SMOKE_MAX_PROXY_RECURSION_DEPTH, "Proxy chain is too long." );
}
/// clear all individual vote records
_db.clear_witness_votes( account );
_db.modify( account, [&]( account_object& a ) {
a.proxy = o.proxy;
});
/// add all new votes
for( int i = 0; i <= SMOKE_MAX_PROXY_RECURSION_DEPTH; ++i )
delta[i] = -delta[i];
_db.adjust_proxied_witness_votes( account, delta );
} else { /// we are clearing the proxy which means we simply update the account
_db.modify( account, [&]( account_object& a ) {
a.proxy = o.proxy;
});
}
}
void account_witness_vote_evaluator::do_apply( const account_witness_vote_operation& o )
{
const auto& voter = _db.get_account( o.account );
FC_ASSERT( voter.proxy.size() == 0, "A proxy is currently set, please clear the proxy before voting for a witness." );
if( o.approve )
FC_ASSERT( voter.can_vote, "Account has declined its voting rights." );
const auto& witness = _db.get_witness( o.witness );
const auto& by_account_witness_idx = _db.get_index< witness_vote_index >().indices().get< by_account_witness >();
auto itr = by_account_witness_idx.find( boost::make_tuple( voter.id, witness.id ) );
if( itr == by_account_witness_idx.end() ) {
FC_ASSERT( o.approve, "Vote doesn't exist, user must indicate a desire to approve witness." );
FC_ASSERT( voter.witnesses_voted_for < SMOKE_MAX_ACCOUNT_WITNESS_VOTES, "Account has voted for too many witnesses." ); // TODO: Remove after hardfork 2
_db.create<witness_vote_object>( [&]( witness_vote_object& v ) {
v.witness = witness.id;
v.account = voter.id;
});
_db.adjust_witness_vote( witness, voter.witness_vote_weight() );
_db.modify( voter, [&]( account_object& a ) {
a.witnesses_voted_for++;
});
} else {