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server.hpp
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server.hpp
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#ifndef SERVER_HPP
#define SERVER_HPP
class office;
class peer;
//typedef boost::shared_ptr<peer> peer_ptr;
typedef std::shared_ptr<peer> peer_ptr;
class server
{
public:
//server(boost::asio::io_service& io_service,const boost::asio::ip::tcp::endpoint& endpoint,options& opts) :
server(options& opts) :
do_sync(1),
do_fast(opts.fast?2:0),
ofip(NULL),
endpoint_(boost::asio::ip::tcp::v4(),opts.port), //TH
io_service_(),
work_(io_service_),
acceptor_(io_service_,endpoint_),
opts_(opts),
ioth_(NULL),
peers_thread(NULL),
clock_thread(NULL),
do_validate(0),
votes_max(0.0),
do_vote(0),
do_block(0),
block_only(true),
panic(false)
{
}
~server()
{ //do_validate=0;
//threadpool.join_all();
//clock_thread->interrupt();
//clock_thread->join();
ELOG("Server down\n");
}
void start()
{ mkdir("usr",0755); // create dir for bank accounts
mkdir("inx",0755); // create dir for bank message indeces
mkdir("blk",0755); // create dir for blocks
mkdir("vip",0755); // create dir for blocks
if(!opts_.genesis.empty()) {
struct stat sb;
if(stat("usr/0001.dat",&sb)>=0) {
ELOG("Database exists. Cannot load genesis\n");
exit(-1);
}
last_srvs_.create_genesis_block(opts_.genesis, opts_.svid);
RETURN_ON_SHUTDOWN();
if((int)last_srvs_.nodes.size()<=(int)opts_.svid){
ELOG("ERROR: svid too high %d<=%d\n",(int)last_srvs_.nodes.size(),(int)opts_.svid);
exit(-1);}
memcpy(pkey,last_srvs_.nodes[opts_.svid].pk,sizeof(hash_t));
//DLOG("INI:%016lX\n",*(uint64_t*)pkey);
if(!last_srvs_.find_key(pkey,skey)){
char pktext[2*32+1]; pktext[2*32]='\0';
ed25519_key2text(pktext,pkey,32);
ELOG("ERROR: failed to find secret key for key:\n%.64s\n",pktext);
exit(-1);}
last_srvs_.find_more_keys(pkey,nkeys);
bank_fee.resize(last_srvs_.nodes.size());
srvs_=last_srvs_;
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
srvs_.now -= BLOCKSEC;
period_start=srvs_.nextblock();
ELOG("MAKE BLOCKCHAIN\n");
message_map empty;
// srvs_.now = last_srvs_.nodes[0].mtim;
srvs_.msg=0;
srvs_.msgl_put(empty,NULL);
finish_block();
write_header();
// header_t head;
// last_srvs_.header(head);
// hash_t emptyHash;
// message_ptr msg(new message(MSGTYPE_BLK,(uint8_t*)&head,sizeof(header_t),opts_.svid,head.now,skey,pkey,emptyHash));
// blk_insert(msg);
// uint32_t now=time(NULL);
// now-=now%BLOCKSEC;
// for(;srvs_.now<now;){
// srvs_.nextblock();
// }
}
uint32_t lastpath=readmsid()-opts_.back*BLOCKSEC;//reads msid_ and path, FIXME, do not read msid, read only path
//uint32_t lastpath=path;
//remember start status
start_path=lastpath;
start_msid=msid_;
last_srvs_.get(lastpath);
if(opts_.svid){
if(!last_srvs_.nodes.size()){
if(!opts_.init){
ELOG("ERROR reading servers (size:%d)\n",(int)last_srvs_.nodes.size());
exit(-1);}
ELOG("CREATING first node\n");}
else if((int)last_srvs_.nodes.size()<=(int)opts_.svid){
ELOG("ERROR reading servers (size:%d)\n",(int)last_srvs_.nodes.size());
exit(-1);}}
else{
int fd=open_bank(0);
if(fd>=0){
close(fd);}}
if(last_srvs_.nodes.size()){
last_srvs_.update_vipstatus();
bank_fee.resize(last_srvs_.nodes.size());}
if(opts_.back && !opts_.comm){
if(undo_bank(false)){
ELOG("DATABASE check passed, run again with --comm (-c) to commit database change and proceed\n");
exit(0);}
else{
ELOG("DATABASE check failed\n");
exit(-1);}}
if(opts_.init){
struct stat sb;
uint32_t now=time(NULL);
now-=now%BLOCKSEC;
if(stat("usr/0001.dat",&sb)>=0){
if(!last_srvs_.nodes.size()){
ELOG("ERROR reading servers for path %08X\n",lastpath);
exit(-1);}
ELOG("INIT from last state @ %08X with MSID: %08X (file usr/0001.dat found)\n",lastpath,msid_);
if(!undo_bank(true)){
ELOG("ERROR loading initial database, fatal\n");
exit(-1);}
// do not rebuild blockchain
//last_srvs_.now=now;
//last_srvs_.blockdir();
//last_srvs_.finish();
// rebuild blockchain
srvs_=last_srvs_;
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
period_start=srvs_.nextblock();
ELOG("MAKE BLOCKCHAIN\n");
for(;srvs_.now<now;){
message_map empty;
srvs_.msg=0;
srvs_.msgl_put(empty,NULL);
finish_block();
write_header();}}
else{
//path=0;
lastpath=0;
start_path=0;
start_msid=0;
msid_=0;
ELOG("START from a fresh database\n");
last_srvs_.init(now-BLOCKSEC);
now=time(NULL);
now-=now%BLOCKSEC;
srvs_=last_srvs_;
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
period_start=srvs_.nextblock(); //changes now!
bank_fee.resize(last_srvs_.nodes.size());
ELOG("MAKE BLOCKCHAIN\n");
for(;srvs_.now<now;){
message_map empty;
srvs_.msg=0;
srvs_.msgl_put(empty,NULL);
finish_block();
write_header();}}
if(!do_fast){ //always sync on do_fast
do_sync=0;}}
else{
if(!last_srvs_.nodes.size()){ // READONLY ok init
assert(!opts_.svid);
struct stat sb;
uint32_t now=time(NULL);
now-=now%BLOCKSEC+BLOCKSEC; // move 1 block back to force sync on connect
//now-=now%BLOCKSEC;
if(stat("usr/0001.dat",&sb)>=0){ // database exists, do not overwrite
ELOG("ERROR reading servers for path %08X\n",lastpath);
exit(-1);}
//path=0;
lastpath=0;
start_path=0;
start_msid=0;
msid_=0;
ELOG("START with read only database\n");
last_srvs_.init(now-BLOCKSEC);
last_srvs_.update_vipstatus();
bank_fee.resize(last_srvs_.nodes.size());}
srvs_=last_srvs_;
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
period_start=srvs_.nextblock();} //changes now!
ELOG("START @ %08X with MSID: %08X\n",lastpath,msid_);
//vip_max=srvs_.update_vip(); //based on initial weights at start time, move to nextblock()
if(!opts_.svid){ // READONLY ok
iamvip=false;
bzero(skey,sizeof(hash_t));
bzero(pkey,sizeof(hash_t));}
else{
if(last_srvs_.nodes.size()<=(unsigned)opts_.svid){
ELOG("ERROR: reading servers (<=%d)\n",opts_.svid);
exit(-1);}
iamvip=(bool)(srvs_.nodes[opts_.svid].status & SERVER_VIP);
//pkey=srvs_.nodes[opts_.svid].pk; // consider having a separate buffer for pkey
memcpy(pkey,srvs_.nodes[opts_.svid].pk,sizeof(hash_t));
//DLOG("INI:%016lX\n",*(uint64_t*)pkey);
if(!last_srvs_.find_key(pkey,skey)){
char pktext[2*32+1]; pktext[2*32]='\0';
ed25519_key2text(pktext,pkey,32);
ELOG("ERROR: failed to find secret key for key:\n%.64s\n",pktext);
exit(-1);}
last_srvs_.find_more_keys(pkey,nkeys);}
if(!opts_.init){
if(!undo_bank(true)){//check database consistance
if(!do_fast){
ELOG("DATABASE check failed, must use fast option to load new datase from network\n");
exit(-1);}
else{
DLOG("DATABASE check failed, load new datase from network\n");}
do_sync=1;}
else{
ELOG("DATABASE check passed\n");
uint32_t now=time(NULL);
now-=now%BLOCKSEC;
if(last_srvs_.now==now-BLOCKSEC && !do_fast){
do_sync=0;}
else{
if(last_srvs_.now<now-(BLOCKSEC*MAX_UNDO) && !do_fast){
ELOG("WARNING, possibly missing too much history for full resync\n");}
do_sync=1;}}}
ioth_ = new boost::thread(boost::bind(&server::iorun, this));
peers_thread = new boost::thread(boost::bind(&server::peers, this));
if(do_sync){
if(do_fast){ //FIXME, do slow sync after fast sync
while(do_fast>1){ // fast_sync changes the status, FIXME use future/promis
boost::this_thread::sleep(boost::posix_time::seconds(1));
RETURN_ON_SHUTDOWN();}
do_fast=0;
load_banks();
srvs_.write_start();}
ELOG("START syncing headers\n");
load_chain();} // sets do_sync=0;
RETURN_ON_SHUTDOWN();
recyclemsid(lastpath+BLOCKSEC);
RETURN_ON_SHUTDOWN();
writemsid(); // synced to new position
clock_thread = new boost::thread(boost::bind(&server::clock, this));
start_accept();
}
void iorun()
{ while(1){
try{
DLOG("Server.Run starting\n");
io_service_.run();
DLOG("Server.Run finished\n");
return;} //Now we know the server is down.
catch (std::exception& e){
ELOG("Server.Run error: %s\n",e.what());}}
}
void stop()
{ do_validate=0;
io_service_.stop();
if(ioth_!=NULL){
ioth_->join();}
//busy_msgs_.clear(); // not needed
if(peers_thread!=NULL){
peers_thread->interrupt();
peers_thread->join();}
if(clock_thread!=NULL){
clock_thread->interrupt();
clock_thread->join();}
threadpool.join_all();
peer_killall();
DLOG("Server shutdown completed\n");
}
void recyclemsid(uint32_t lastpath)
{ if(!opts_.svid){ // READONLY ok , this test is not needed
return;}
uint32_t firstmsid=srvs_.nodes[opts_.svid].msid;
hash_t msha;
if(firstmsid>msid_){
ELOG("ERROR initial msid lower than on network, fatal (%08X<%08X)\n",msid_,firstmsid);
if(!do_fast){
exit(-1);}
msid_=firstmsid;
return;}
if(firstmsid==msid_){
DLOG("NO recycle needed\n");
return;}
DLOG("START recycle\n");
memcpy(msha,srvs_.nodes[opts_.svid].msha,sizeof(hash_t));
firstmsid++;
uint32_t ntime=0;
for(uint32_t lastmsid=firstmsid;lastmsid<=msid_;lastmsid++){
message_ptr msg(new message(MSGTYPE_MSG,lastpath,opts_.svid,lastmsid,pkey,msha)); //load from file
if(!(msg->status & MSGSTAT_DAT)){
ELOG("ERROR, failed to read message %08X/%02x_%04x_%08x.msg\n",
lastpath,MSGTYPE_MSG,opts_.svid,lastmsid);
msid_=lastmsid-1;
return;}
if(msg->now<last_srvs_.now || ntime){ //FIXME, must sign this message again if message too old !!!
//TODO, check double spend
if(!ntime){
ntime=time(NULL);
assert(ntime>=srvs_.now);}
ELOG("RECYCLED message %04X:%08X from %08X/ signing with new time %08X [len:%d]\n",opts_.svid,lastmsid,lastpath,ntime,msg->len);
msg->signnewtime(ntime,skey,pkey,msha);
ntime++;}
memcpy(msha,msg->sigh,sizeof(hash_t));
if(txs_insert(msg)){
ELOG("RECYCLED message %04X:%08X from %08X/ inserted\n",opts_.svid,lastmsid,lastpath);
if(srvs_.now!=lastpath){
ELOG("MOVE message %04X:%08X from %08X/ to %08X/\n",opts_.svid,lastmsid,lastpath,srvs_.now);
msg->move(srvs_.now);}}
else{
ELOG("RECYCLED message %04X:%08X from %08X/ known\n",opts_.svid,lastmsid,lastpath);}}
if(msid_!=start_msid){
ELOG("ERROR, failed to get correct msid now:%08X<>start:%08X, check msid.txt\n",msid_,start_msid);
exit(-1);}
//if(srvs_.now!=lastpath){
// message_ptr msg(new message());
// msg->path=lastpath;
// msg->hashtype(MSGTYPE_MSG);
// msg->svid=opts_.svid;
// for(;firstmsid<=msid_;firstmsid++){
// msg->msid=firstmsid;
// ELOG("REMOVING message %04X:%08X from %08X/\n",msg->svid,msg->msid,lastpath);
// msg->remove();}}
}
void del_msglog(uint32_t now,uint16_t svid,uint32_t msid)
{ char filename[64];
sprintf(filename,"blk/%03X/%05X/log/%04X_%08X.log",now>>20,now&0xFFFFF,svid,msid);
unlink(filename);
}
void put_msglog(uint32_t now,uint16_t svid,uint32_t msid,std::map<uint64_t,log_t>& log) //message log, by server
{ char filename[64];
int fd;
if(msid){
sprintf(filename,"blk/%03X/%05X/log/%04X_%08X.log",now>>20,now&0xFFFFF,svid,msid);
fd=open(filename,O_WRONLY|O_CREAT|O_TRUNC,0644);}
else{
sprintf(filename,"blk/%03X/%05X/log/%04X_%08X.log",now>>20,now&0xFFFFF,svid,0);
fd=open(filename,O_WRONLY|O_CREAT|O_APPEND,0644);}
if(fd<0){
ELOG("ERROR, failed to open log file %s\n",filename);
return;} // :-( maybe we should throw here something
for(auto it=log.begin();it!=log.end();it++){
uint32_t user=(it->first)>>32;
write(fd,&user,sizeof(uint32_t));
write(fd,&it->second,sizeof(log_t));}
close(fd);
}
//update_nodehash is similar
int undo_bank(bool commit) //will undo database changes and check if the database is consistant
{ //could use multiple threads but disk access could limit the processing anyway
//uint32_t path=srvs_.now; //use undo from next block
uint32_t path=last_srvs_.now+BLOCKSEC; //use undo from next block
int rollback=opts_.back;
DLOG("CHECK DATA @%08X (and undo till @%08X)\n",last_srvs_.now,path+rollback*BLOCKSEC);
bool failed=false;
last_srvs_.blockdir();
for(uint16_t bank=1;bank<last_srvs_.nodes.size();bank++){
char filename[64];
sprintf(filename,"usr/%04X.dat",bank);
int fd=open(filename,O_RDWR);
if(fd<0){
failed=true;
continue;}
std::vector<int> ud;
int n;
for(n=0;n<=rollback;n++){
uint32_t npath=path+n*BLOCKSEC;
sprintf(filename,"blk/%03X/%05X/und/%04X.dat",npath>>20,npath&0xFFFFF,bank);
int nd=open(filename,O_RDONLY);
if(nd<0){
continue;}
DLOG("USING bank %04X block %08X undo %s\n",bank,npath,filename);
ud.push_back(nd);}
uint32_t users=last_srvs_.nodes[bank].users;
int64_t weight=0;
uint64_t csum[4]={0,0,0,0};
for(uint32_t user=0;user<users;user++){
auto it=ud.begin();
user_t u;
int back=opts_.back;
for(;it!=ud.end();it++,back--){
u.msid=0;
if(sizeof(user_t)==read(*it,&u,sizeof(user_t)) && u.msid){
DLOG("OVERWRITE: %04X:%08X (weight:%016lX) (back:%d)\n",bank,user,u.weight,back);
if(commit){
write(fd,&u,sizeof(user_t));} //overwrite bank file
else{
lseek(fd,sizeof(user_t),SEEK_CUR);} //overwrite bank file
it++;
goto NEXTUSER;}}
if(sizeof(user_t)!=read(fd,&u,sizeof(user_t))){
ELOG("ERROR loading bank %04X (bad read)\n",bank);
failed=true;}
NEXTUSER:;
for(;it!=ud.end();it++){
lseek(*it,sizeof(user_t),SEEK_CUR);}
weight+=u.weight;
//FIXME, debug only !!!
#ifdef DEBUG
user_t n;
memcpy(&n,&u,sizeof(user_t));
last_srvs_.user_csum(n,bank,user);
if(memcmp(n.csum,u.csum,32)){
ELOG("ERROR !!!, checksum mismatch for user %04X:%08X [%08X<>%08X]\n",bank,user,
*((uint32_t*)(n.csum)),*((uint32_t*)(u.csum)));
failed=true;}
#endif
last_srvs_.xor4(csum,u.csum);}
close(fd);
for(auto nd : ud){
close(nd);}
if(last_srvs_.nodes[bank].weight!=weight){
ELOG("ERROR loading bank %04X (bad sum:%016lX<>%016lX)\n",
bank,last_srvs_.nodes[bank].weight,weight);
failed=true;}
if(memcmp(last_srvs_.nodes[bank].hash,csum,32)){
ELOG("ERROR loading bank %04X (bad hash)\n",bank);
failed=true;}}
if(failed){
return(0);}
return(1);
}
void load_banks()
{
//create missing bank messages
uint16_t end=last_srvs_.nodes.size();
std::set<uint16_t> ready;
peerready(ready); //get list of peers available for data download
missing_.lock();
missing_msgs_.clear();
for(uint16_t bank=1;bank<end;bank++){
//TODO, unlikely but maybe we have the correct bank already, we could check this
message_ptr put_msg(new message());
put_msg->data[0]=MSGTYPE_USG;
put_msg->data[1]=0;
memcpy(put_msg->data+2,&last_srvs_.now,4);
memcpy(put_msg->data+6,&bank,2);
put_msg->msid=last_srvs_.now;
put_msg->svid=bank;
put_msg->hash.num=put_msg->dohash(put_msg->data);
put_msg->got=0; // do first request emidiately
missing_msgs_[put_msg->hash.num]=put_msg;}
uint32_t mynow=time(NULL);
for(auto peer=ready.begin();peer!=ready.end();peer++){ // send 2 requestes to each peer
for(auto pm=missing_msgs_.begin();pm!=missing_msgs_.end();pm++){
uint32_t maxwait=last_srvs_.nodes[pm->second->svid].users*sizeof(user_t)/1000000; //expect 1Mb connection
if(pm->second->cansend(*peer,mynow,maxwait)){
DLOG("REQUESTING BANK %04X from %04X\n",pm->second->svid,*peer);
deliver(pm->second,*peer); //LOCK: pio_
DLOG("REQUESTING BANK %04X from %04X sent\n",pm->second->svid,*peer);
break;}}}
while(missing_msgs_.size()){
uint32_t mynow=time(NULL);
for(auto peer=ready.begin();peer!=ready.end();peer++){ // send 2 requestes to each peer
for(auto pm=missing_msgs_.begin();pm!=missing_msgs_.end();pm++){
uint32_t maxwait=last_srvs_.nodes[pm->second->svid].users*sizeof(user_t)/1000000; //expect 1Mb connection
if(pm->second->cansend(*peer,mynow,maxwait)){ // wait dependend on message size !!!
DLOG("REQUESTING BANK %04X from %04X\n",pm->second->svid,*peer);
deliver(pm->second,*peer); //LOCK: pio_
DLOG("REQUESTING BANK %04X from %04X sent\n",pm->second->svid,*peer);
break;}}}
missing_.unlock();
ELOG("WAITING for banks (peers:%d)\n",(int)ready.size());
//TODO sleep much shorter !!!
boost::this_thread::sleep(boost::posix_time::seconds(1)); //yes, yes, use futur/promise instead
RETURN_ON_SHUTDOWN();
peerready(ready); //get list of peers available for data download
missing_.lock();}
missing_.unlock();
//we should have now all banks
}
uint64_t need_bank(uint16_t bank) //FIXME, return 0 if not at this stage
{ union {uint64_t num; uint8_t dat[8];} h;
h.dat[0]=0;
h.dat[1]=MSGTYPE_USR;
memcpy(h.dat+2,&last_srvs_.now,4);
memcpy(h.dat+6,&bank,2);
missing_.lock();
if(missing_msgs_.find(h.num)!=missing_msgs_.end()){
missing_.unlock();
return(h.num);}
missing_.unlock();
return(0);
}
void have_bank(uint64_t hnum)
{ missing_.lock();
missing_msgs_.erase(hnum);
missing_.unlock();
}
void load_chain()
{
uint32_t now=time(NULL);
now-=now%BLOCKSEC;
do_validate=1;
RETURN_ON_SHUTDOWN();
for(int v=0;v<VALIDATORS;v++){
threadpool.create_thread(boost::bind(&server::validator, this));}
//FIXME, must start with a matching nowhash and load serv_
if(srvs_.now<now){
uint32_t n=headers.size();
for(;!n;){
get_more_headers(srvs_.now); // try getting more headers
ELOG("\nWAITING 1s (%08X<%08X)\n",srvs_.now,now);
boost::this_thread::sleep(boost::posix_time::seconds(1));
RETURN_ON_SHUTDOWN();
n=headers.size();}
auto block=headers.begin();
for(;;){
ELOG("START syncing header %08X\n",block->now);
if(srvs_.now!=block->now){
ELOG("ERROR, got strange block numbers %08X<>%08X\n",srvs_.now,block->now);
exit(-1);} //FIXME, prevent this
//block->load_signatures(); //TODO should go through signatures and update vok, vno
block->header_put(); //FIXME will loose relation to signatures, change signature filename to fix this
if(!block->msgl_load(missing_msgs_,opts_.svid)){
ELOG("LOAD messages from peers\n");
//request list of transactions from peers
get_msglist=srvs_.now;
//prepare txslist request message
message_ptr put_msg(new message());
put_msg->data[0]=MSGTYPE_MSL;
memcpy(put_msg->data+1,&block->now,4);
put_msg->got=0; // do first request emidiately
while(get_msglist){ // consider using future/promise
uint32_t nnow=time(NULL);
if(put_msg->got<nnow-MAX_MSGWAIT){
fillknown(put_msg); // do this again in case we have a new peer, FIXME, let the peer do this
uint16_t svid=put_msg->request();
if(svid){
int ok=deliver(put_msg,svid);
ELOG("REQUESTING MSL from %04X (%d)\n",svid,ok);}}
boost::this_thread::sleep(boost::posix_time::milliseconds(50));
RETURN_ON_SHUTDOWN();}
srvs_.msg=block->msg; //check
memcpy(srvs_.msghash,block->msghash,SHA256_DIGEST_LENGTH);}
else{
srvs_.msg=block->msg; //check
memcpy(srvs_.msghash,block->msghash,SHA256_DIGEST_LENGTH);}
//inform peers about current sync block
message_ptr put_msg(new message());
put_msg->data[0]=MSGTYPE_PAT;
memcpy(put_msg->data+1,&srvs_.now,4);
deliver(put_msg);
//request missing messages from peers
txs_.lock();
txs_msgs_.clear();
txs_.unlock();
dbl_.lock(); //FIXME, there are no dbl_ messages in blocks !!!
dbl_msgs_.clear();
dbl_.unlock();
ldc_.lock();
ldc_msgs_.clear();
ldc_.unlock();
std::set<uint16_t> update;
missing_.lock();
LAST_block_final_msgs=missing_msgs_;
//message_queue commit_msgs;
for(auto it=missing_msgs_.begin();it!=missing_msgs_.end();){
auto jt=it++;
missing_.unlock();
update.insert(jt->second->svid);
txs_.lock();
txs_msgs_[jt->first]=jt->second;
txs_.unlock();
if(jt->second->msid==0xFFFFFFFF){
if(jt->second->status & MSGSTAT_VAL){
srvs_.nodes[jt->second->svid].status |= SERVER_DBL;}
missing_.lock();
missing_msgs_.erase(jt);
continue;}
ldc_.lock();
ldc_msgs_[jt->first]=jt->second;
ldc_.unlock();
if(jt->second->load(opts_.svid)){ // will be unloaded by the validator
if(!jt->second->sigh_check()){
jt->second->read_head(); //to get 'now'
DLOG("LOADING TXS %04X:%08X from path:%08X\n",
jt->second->svid,jt->second->msid,jt->second->path);
check_.lock();
check_msgs_.push_back(jt->second); // send to validator
check_.unlock();
missing_.lock();
missing_msgs_.erase(jt);
continue;}
DLOG("LOADING TXS %04X:%08X from path:%08X failed\n",
jt->second->svid,jt->second->msid,jt->second->path);
jt->second->len=message::header_length;}
fillknown(jt->second);
uint16_t svid=jt->second->request(); //FIXME, maybe request only if this is the next needed message, need to have serv_ ... ready for this check :-/
if(svid){
if(srvs_.nodes[jt->second->svid].msid==jt->second->msid-1){ // do not request if previous message not processed
DLOG("REQUESTING TXS %04X:%08X from %04X\n",jt->second->svid,jt->second->msid,svid);
deliver(jt->second,svid);}
else{
DLOG("POSTPONING TXS %04X:%08X\n",jt->second->svid,jt->second->msid);}}
missing_.lock();}
missing_.unlock();
//wait for all messages to be processed by the validators
ldc_.lock();
while(ldc_msgs_.size()){
ldc_.unlock();
boost::this_thread::sleep(boost::posix_time::milliseconds(50)); //yes, yes, use futur/promise instead
RETURN_ON_SHUTDOWN();
ldc_.lock();}
ldc_.unlock();
//run save_mnum for each message (msgl_put ...)
int n=0;
for(auto it=LAST_block_final_msgs.begin();it!=LAST_block_final_msgs.end();it++){
if(it->second->msid==0xFFFFFFFF){
continue;}
assert((it->second->status & MSGSTAT_SAV));
assert((it->second->status & MSGSTAT_COM));
assert((it->second->status & MSGSTAT_VAL));
it->second->save_mnum(++n);}
//FIXME, txshash not calculated !!!
//DLOG("TXSHASH: %08X\n",*((uint32_t*)srvs_.msghash));
DLOG("COMMIT deposits\n");
commit_block(update); // process bkn and get transactions
commit_dividends(update);
commit_deposit(update);
commit_bankfee();
DLOG("UPDATE accounts\n");
#ifdef DEBUG
for(auto it=update.begin();it!=update.end();it++){
assert(*it<srvs_.nodes.size());
if(!srvs_.check_nodehash(*it)){ //FIXME, remove this later !, this is checked during download.
ELOG("FATAL ERROR, failed to check the hash of bank %04X at block %08X\n",*it,srvs_.now);
exit(-1);}}
#endif
//finish block
srvs_.finish(); //FIXME, add locking
if(memcmp(srvs_.nowhash,block->nowhash,SHA256_DIGEST_LENGTH)){
ELOG("ERROR, failed to arrive at correct hash at block %08X, fatal\n",srvs_.now);
exit(-1);}
last_srvs_=srvs_; // consider not making copies of nodes
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
period_start=srvs_.nextblock();
iamvip=(bool)(srvs_.nodes[opts_.svid].status & SERVER_VIP);
//FIXME should be a separate thread
DLOG("UPDATE LOG\n");
ofip_update_block(period_start,0,LAST_block_final_msgs,srvs_.div);
DLOG("PROCESS LOG\n");
ofip_process_log(srvs_.now-BLOCKSEC);
DLOG("WRITE NEW MSID\n");
writemsid();
now=time(NULL);
now-=now%BLOCKSEC;
if(srvs_.now>=now){
break;}
headers_.lock();
for(block++;block==headers.end();block++){ // wait for peers to load more blocks
block--;
headers_.unlock();
ELOG("WAITING at block end (headers:%d) (srvs_.now:%08X;now:%08X) \n",
(int)headers.size(),srvs_.now,now);
//FIXME, insecure !!! better to ask more peers / wait for block with enough votes
get_more_headers(block->now+BLOCKSEC);
boost::this_thread::sleep(boost::posix_time::seconds(2));
RETURN_ON_SHUTDOWN();
headers_.lock();}
headers_.unlock();}}
//TODO, add nodes if needed
//vip_max=srvs_.update_vip(); // move to nextblock()
txs_.lock();
txs_msgs_.clear();
txs_.unlock();
dbl_.lock();
dbl_msgs_.clear();
dbl_.unlock();
//FIXME, inform peers about sync status
headers_.lock();
do_sync=0;
headers.clear();
headers_.unlock();
message_ptr put_msg(new message());
put_msg->data[0]=MSGTYPE_SOK;
memcpy(put_msg->data+1,&srvs_.now,4);
deliver(put_msg);
}
//void put_msglist(uint32_t now,message_map& map)
void msgl_process(servers& header,uint8_t* data)
{ missing_.lock(); // consider changing this to missing_lock
if(get_msglist!=header.now){
missing_.unlock();
return;}
message_map map;
header.msgl_map((char*)data,map,opts_.svid);
if(!header.msgl_put(map,(char*)data)){
missing_.unlock();
return;}
missing_msgs_.swap(map);
get_msglist=0;
missing_.unlock();
return;
}
void get_last_header(servers& sync_ls,handshake_t& sync_hs)
{ headers_.lock();
if(headers.size()){
sync_ls=headers.back();
headers_.unlock();}
else{
headers_.unlock();
sync_ls.loadhead(sync_hs.head);}
}
void add_next_header(uint32_t from,servers& peer_ls)
{ headers_.lock();
if((!headers.size() &&
!memcmp(peer_ls.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH)) ||
(headers.back().now==from-BLOCKSEC &&
!memcmp(peer_ls.oldhash,headers.back().nowhash,SHA256_DIGEST_LENGTH))){
headers.insert(headers.end(),peer_ls);}
headers_.unlock();
}
void add_headers(std::vector<servers>& peer_headers)
{ if(!do_sync){
return;}
headers_.lock();
if(!headers.size()){
headers.insert(headers.end(),peer_headers.begin(),peer_headers.end());
headers_.unlock();
return;}
auto it=peer_headers.begin();
for(;it!=peer_headers.end() && it->now<=headers.back().now;it++){}
if(headers.back().now!=peer_headers.begin()->now-BLOCKSEC){
ELOG("ERROR, headers misaligned\n"); //should never happen
headers_.unlock();
return;}
headers.insert(headers.end(),it,peer_headers.end());
headers_.unlock();
}
int fast_sync(bool done,header_t& head,node_t* nods,svsi_t* svsi)
{ static uint32_t last=0;
for(;;){
uint32_t now=time(NULL);
headers_.lock();
if(do_fast<2){
headers_.unlock();
return(-1);}
if(done){ // peer should now overwrite servers with current data
last_srvs_.overwrite(head,nods);
last_srvs_.blockdir();
last_srvs_.put();
last_srvs_.put_signatures(head,svsi);
srvs_=last_srvs_; //FIXME, create a copy function
memcpy(srvs_.oldhash,last_srvs_.nowhash,SHA256_DIGEST_LENGTH);
period_start=srvs_.nextblock();
bank_fee.resize(last_srvs_.nodes.size());
if(opts_.svid && opts_.svid<(int)srvs_.nodes.size()){
//pkey=srvs_.nodes[opts_.svid].pk; //FIXME, is this needed and safe ?
iamvip=(bool)(srvs_.nodes[opts_.svid].status & SERVER_VIP);}
do_fast=1;
headers_.unlock();
return(1);}
if(last<now-SYNC_WAIT){
last=now;
headers_.unlock();
return(1);}
headers_.unlock();
boost::this_thread::sleep(boost::posix_time::seconds(1));
RETURN_VAL_ON_SHUTDOWN(0);}
return 0;
}
uint32_t readmsid()
{ FILE* fp=fopen("msid.txt","r");
if(fp==NULL){
msid_=0;
return(0);}
uint32_t path;
uint32_t svid;
uint64_t *h=(uint64_t*)&msha_;
fscanf(fp,"%X %X %X %lX %lX %lX %lX",&msid_,&path,&svid,h+3,h+2,h+1,h+0);
fclose(fp);
if(svid!=(uint32_t)opts_.svid){
ELOG("FATAL ERROR: failed to read correct svid from msid.txt\n");
exit(-1);}
return(path);
}
//FIXME, move this to servers.hpp
void writemsid()
{ FILE* fp=fopen("msid.txt","w");
if(fp==NULL){
ELOG("FATAL ERROR: failed to write to msid.txt\n");exit(-1);}
uint64_t *h=(uint64_t*)&msha_;
fprintf(fp,"%08X %08X %04X %016lX %016lX %016lX %016lX\n",msid_,last_srvs_.now,opts_.svid,h[3],h[2],h[1],h[0]);
fclose(fp);
}
void clean_last_svid_msgs(std::map<uint16_t,message_ptr>& map) // remove !!!
{ for(std::map<uint16_t,message_ptr>::iterator jt=map.begin();jt!=map.end();){
auto it=jt++;
if(it->second->msid<=last_srvs_.nodes[it->first].msid){
DLOG("CLEAN: %04X:%08X<-[%08X] !!!\n",it->first,it->second->msid,
last_srvs_.nodes[it->first].msid);
map.erase(it);}}
}
void message_shash(uint8_t* mhash,message_map& map)
{ SHA256_CTX sha256;
SHA256_Init(&sha256);
for(auto it=map.begin();it!=map.end();++it){
char sigh[64];
ed25519_key2text(sigh,it->second->sigh,32);
DLOG("____ HASH %04X:%08X %016lX %.*s\n",it->second->svid,it->second->msid,it->first,64,sigh);
//DLOG("____ HASH %04X:%08X<-%08X@%08X %.*s\n",it->second->svid,it->second->msid,
// last_srvs_.nodes[it->second->svid].msid,last_srvs_.now,2*SHA256_DIGEST_LENGTH,sigh);
SHA256_Update(&sha256,it->second->sigh,4*sizeof(uint64_t));}
SHA256_Final(mhash, &sha256);
}
void LAST_block_msgs()
{ LAST_block_svid_msgs.clear();
LAST_block_all_msgs.clear();
uint16_t lastsvid=0;
uint32_t minmsid=0;
uint32_t nowmsid=0; //test only
txs_.lock();
for(auto me=txs_msgs_.begin();me!=txs_msgs_.end();me++){ // process COM messages
if(!(me->second->status & MSGSTAT_COM) ||
(me->second->status & MSGSTAT_VAL)){
continue;}
if(lastsvid!=me->second->svid){
lastsvid=me->second->svid;
minmsid=last_srvs_.nodes[lastsvid].msid+1;
nowmsid=minmsid;} //test only
if(me->second->msid<minmsid){
continue;}
assert(me->second->msid==nowmsid); //test only
nowmsid++; //test only
LAST_block_all_msgs[me->first & 0xFFFFFFFFFFFF0000L]=me->second;
LAST_block_svid_msgs[lastsvid]=me->second;}
txs_.unlock();
dbl_.lock();
for(auto it=dbl_msgs_.begin();it!=dbl_msgs_.end();it++){
uint16_t svid=it->second->svid;
if(!(last_srvs_.nodes[svid].status & SERVER_DBL) && known_dbl(svid)){
message_ptr msg(new message());
msg->dblhash(svid);
LAST_block_all_msgs[msg->hash.num]=msg;}}
dbl_.unlock();
LAST_block=srvs_.now;
}
void LAST_block_final(hash_s& cand)
{ assert(srvs_.now==LAST_block);
message_map LAST_block_tmp_msgs=LAST_block_all_msgs;
for(auto dm=winner->msg_del.begin();dm!=winner->msg_del.end();dm++){
LAST_block_tmp_msgs.erase(*dm);}
LAST_block_final_msgs.clear(); // keys NOT masked with 0xFFFFFFFFFFFF0000L !!!
for(auto it=LAST_block_tmp_msgs.begin();it!=LAST_block_tmp_msgs.end();it++){
it->second->status|=MSGSTAT_VAL;
if(it->second->msid==0xFFFFFFFF){
uint16_t svid=it->second->svid;
ELOG("DOUBLE setting dbl status for node %04X\n",svid);
dbls_.lock();
dbl_srvs_.insert(svid); //FIXME, pointless
dbls_.unlock();
srvs_.nodes[svid].status |= SERVER_DBL;}
assert(winner->msg_add.find(it->first)==winner->msg_add.end());
//if(winner->msg_add.find(it->first)!=winner->msg_add.end()){
// continue;}
LAST_block_final_msgs.insert(LAST_block_final_msgs.end(),
std::pair<uint64_t,message_ptr>(it->second->hash.num,it->second));}
LAST_block_tmp_msgs.clear();
for(auto am=winner->msg_add.begin();am!=winner->msg_add.end();am++){
if(*(uint32_t*)(((uint8_t*)&am->first)+2)==0xFFFFFFFF){
uint16_t svid=*(uint16_t*)(((uint8_t*)&am->first)+6);
ELOG("DOUBLE setting dbl status for node %04X\n",svid);
dbls_.lock();
dbl_srvs_.insert(svid); //FIXME, pointless
dbls_.unlock();
srvs_.nodes[svid].status |= SERVER_DBL;}
message_ptr msg(new message((uint16_t*)(((uint8_t*)&am->first)+6),(uint32_t*)(((uint8_t*)&am->first)+2),
(char*)am->second.hash,opts_.svid,LAST_block));
msg->status|=MSGSTAT_VAL;
LAST_block_final_msgs[msg->hash.num]=msg;}
txs_.lock();
char filename[64];
sprintf(filename,"blk/%03X/%05X/delta.txt",LAST_block>>20,LAST_block&0xFFFFF);
FILE *fp=fopen(filename,"w");
char hash[64];
//add new messages
auto lm=LAST_block_final_msgs.begin();
auto tm=txs_msgs_.begin();
message_map txs_msgs_add;
std::set<message_ptr> recover;
for(;lm!=LAST_block_final_msgs.end();){
if(tm==txs_msgs_.end() || lm->first<tm->first){
if(tm!=txs_msgs_.end() && !((tm->first ^ lm->first) & 0xFFFFFFFFFFFF0000L)){
if(!(tm->second->status & MSGSTAT_BAD)){
bad_insert(tm->second);}}
assert(txs_msgs_.find(lm->first)==txs_msgs_.end());
if(lm->second->path && lm->second->path!=LAST_block){
lm->second->move(LAST_block);}
lm->second->path=LAST_block;
//FIXME :-( no info about peer inventory :-(
txs_msgs_add[lm->first]=lm->second;
ed25519_key2text(hash,lm->second->sigh,sizeof(hash_t));
fprintf(fp,"%04X:%08X %.*s new\n",lm->second->svid,lm->second->msid,64,hash);
lm++;
continue;}
if(lm->first==tm->first){
if(!(tm->second->status & MSGSTAT_DAT)){
tm->second->status|=MSGSTAT_VAL;
memcpy(tm->second->sigh,lm->second->sigh,32);}
else if(memcmp(tm->second->sigh,lm->second->sigh,32)){
if((tm->second->status & (MSGSTAT_BAD|MSGSTAT_DAT))==MSGSTAT_DAT){
bad_insert(tm->second);}
//FIXME :-( overwrites info about peer inventory :-(
tm->second=lm->second;}
if(tm->second->status & MSGSTAT_BAD){
recover.insert(tm->second);}
tm->second->status|=MSGSTAT_VAL;
if(tm->second->path && tm->second->path!=LAST_block){
tm->second->move(LAST_block);}
tm->second->path=LAST_block;
ed25519_key2text(hash,tm->second->sigh,sizeof(hash_t));
fprintf(fp,"%04X:%08X %.*s\n",lm->second->svid,lm->second->msid,64,hash);
tm++; //ERROR, must compare new tm to previous lm too !!!
while(tm!=txs_msgs_.end() && !((tm->first ^ lm->first) & 0xFFFFFFFFFFFF0000L)){
if(!(tm->second->status & MSGSTAT_BAD)){
bad_insert(tm->second);}
tm++;}
lm++;
continue;}
while(tm!=txs_msgs_.end() && lm->first>tm->first){
if(!((tm->first ^ lm->first) & 0xFFFFFFFFFFFF0000L)){
if(!(tm->second->status & MSGSTAT_BAD)){
bad_insert(tm->second);}}
tm++;}}
fclose(fp);
if(LAST_block_final_msgs.size()>0){
lm--;
while(tm!=txs_msgs_.end() && !((tm->first ^ lm->first) & 0xFFFFFFFFFFFF0000L)){
if(!(tm->second->status & MSGSTAT_BAD)){
bad_insert(tm->second);}
tm++;}}
txs_msgs_.insert(txs_msgs_add.begin(),txs_msgs_add.end());
for(auto me : recover){ // must do this after removing all BAD messages
assert(me->status & MSGSTAT_VAL);
bad_recover(me);}
//srvs_.msg=LAST_block_final_msgs.size(); //done in msgl_put
srvs_.msgl_put(LAST_block_final_msgs,NULL);
hash_s last_block_message;
message_shash(last_block_message.hash,LAST_block_final_msgs);
if(memcmp(last_block_message.hash,cand.hash,32)){
char tex1[2*SHA256_DIGEST_LENGTH];
char tex2[2*SHA256_DIGEST_LENGTH];
ed25519_key2text(tex1,last_block_message.hash,SHA256_DIGEST_LENGTH);
ed25519_key2text(tex2,cand.hash,SHA256_DIGEST_LENGTH);
ELOG("FATAL hash mismatch\n%.64s\n%.64s\nblk/%03X/%05X/log.txt\n",
tex1,tex2,srvs_.now>>20,srvs_.now&0xFFFFF);
exit(-1);}
wait_.lock(); //maybe not needed if no validators
wait_msgs_.insert(wait_msgs_.begin(),check_msgs_.begin(),check_msgs_.end());
wait_.unlock();
check_.lock(); //maybe not needed if no validators
check_msgs_.clear();
check_.unlock();
//clean and undo txs messages
std::deque<message_ptr> signnew; // vector of own late message for time update, signature and resubmission
uint16_t lastsvid=0;
uint32_t minmsid=0;