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SuperNET/iguana/iguana_peers.c

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/******************************************************************************
* Copyright © 2014-2015 The SuperNET Developers. *
* *
* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
* the top-level directory of this distribution for the individual copyright *
* holder information and the developer policies on copyright and licensing. *
* *
* Unless otherwise agreed in a custom licensing agreement, no part of the *
* SuperNET software, including this file may be copied, modified, propagated *
* or distributed except according to the terms contained in the LICENSE file *
* *
* Removal or modification of this copyright notice is prohibited. *
* *
******************************************************************************/
#include "iguana777.h"
#define _iguana_hashfind(coin,ipbits) _iguana_hashset(coin,ipbits,-1)
struct iguana_iAddr *iguana_iAddrhashfind(struct iguana_info *coin,uint64_t ipbits,int32_t createflag);
struct iguana_iAddr *_iguana_hashset(struct iguana_info *coin,uint64_t ipbits,int32_t itemind)
{
struct iguana_iAddr *ptr = 0; int32_t allocsize; char str[65]; struct OS_memspace *mem = 0;
expand_ipbits(str,ipbits);
HASH_FIND(hh,coin->iAddrs,&ipbits,sizeof(ipbits),ptr);
//printf("%p hashset.(%s) -> ptr.%p itemind.%d keylen.%ld %x\n",coin->iAddrs,str,ptr,itemind,sizeof(ipbits),ipbits);
if ( itemind >= 0 )
{
if ( ptr == 0 )
{
allocsize = (int32_t)(sizeof(*ptr));
if ( mem != 0 )
ptr = iguana_memalloc(mem,allocsize,1);
else ptr = mycalloc('t',1,allocsize);
if ( ptr == 0 )
printf("fatal alloc error in hashset\n"), exit(-1);
//printf("ptr.%p allocsize.%d key.%p keylen.%d itemind.%d\n",ptr,allocsize,key,keylen,itemind);
ptr->hh.itemind = itemind;
ptr->ipbits = ipbits;
HASH_ADD(hh,coin->iAddrs,ipbits,sizeof(ipbits),ptr);
{
struct iguana_iAddr *tmp;
HASH_FIND(hh,coin->iAddrs,&ipbits,sizeof(ipbits),tmp);
if ( tmp != ptr )
printf("%s itemind.%d search error %p != %p\n",str,itemind,ptr,tmp);
//else printf("%p added.(%s) ind.%d:%d %p tmp.%p %x\n",coin->iAddrs,str,itemind,ptr->hh.itemind,ptr,tmp,ipbits);
}
}
else ptr->hh.itemind = itemind;
}
return(ptr);
}
struct iguana_iAddr *iguana_iAddrhashset(struct iguana_info *coin,struct iguana_iAddr *iA,int32_t ind)
{
struct iguana_iAddr *tmp,*item;
if ( iA == 0 || iA->ipbits == 0 )
{
printf("null iA.%p or ipbits.%llx ind.%d status.%d\n",iA,iA!=0?(long long)iA->ipbits:0,iA!=0?iA->hh.itemind:0,iA!=0?iA->status:0);
exit(-1);
return(0);
}
portable_mutex_lock(&coin->peers_mutex);
if ( (item= _iguana_hashfind(coin,iA->ipbits)) == 0 )
{
tmp = mycalloc('i',1,sizeof(*iA));
*tmp = *iA;
iA = tmp;
if ( ind <= 0 )
ind = coin->numiAddrs + 1;
//printf("coin->iAddrs.%p call set.(%x) ind.%d\n",coin->iAddrs,iA->ipbits,iA->ind);
if ( (item= _iguana_hashset(coin,iA->ipbits,ind)) != 0 && item->hh.itemind == coin->numiAddrs+1 )
{
*item = *iA;
iA = item;
coin->numiAddrs++;
} else printf("iguana_hashset error numiAddrs.%d ind.%d\n",coin->numiAddrs,iA->hh.itemind);
}
else
{
*item = *iA;
iA = item;
iA->hh.itemind = ind;
}
portable_mutex_unlock(&coin->peers_mutex);
//printf("return iA.%p ind.%d %x\n",iA,iA->hh.itemind,iA->ipbits);
return(iA);
}
struct iguana_iAddr *iguana_iAddrhashfind(struct iguana_info *coin,uint64_t ipbits,int32_t createflag)
{
int32_t ind; struct iguana_iAddr *item = 0;
portable_mutex_lock(&coin->peers_mutex);
if ( ipbits != 0 )
{
if ( (item= _iguana_hashfind(coin,ipbits)) == 0 && createflag != 0 )
{
ind = coin->numiAddrs + 1;
_iguana_hashset(coin,ipbits,ind);
if ( (item= _iguana_hashfind(coin,ipbits)) != 0 )
coin->numiAddrs++;
}
}
portable_mutex_unlock(&coin->peers_mutex);
return(item);
}
uint32_t iguana_rwiAddrind(struct iguana_info *coin,int32_t rwflag,struct iguana_iAddr *iA,uint32_t ind)
{
FILE *fp; char fname[512],hexstr[65]; int32_t i,n,m,retval = 0; struct iguana_iAddr tmp,*ptr;
sprintf(fname,"DB/%s/peers.dat",coin->symbol);
OS_compatible_path(fname);
if ( rwflag < 0 || iA == 0 )
{
coin->numiAddrs = 0;
if ( (fp= fopen(fname,"rb+")) != 0 )
{
fseek(fp,0,SEEK_END);
n = (int32_t)(ftell(fp) / sizeof(*iA));
for (i=m=0; i<n; i++)
{
fseek(fp,i * sizeof(tmp),SEEK_SET);
if ( ftell(fp) == i*sizeof(tmp) && fread(&tmp,1,sizeof(tmp),fp) == sizeof(tmp) && tmp.ipbits != 0 )
{
portable_mutex_lock(&coin->peers_mutex);
HASH_FIND(hh,coin->iAddrs,&tmp.ipbits,sizeof(tmp.ipbits),ptr);
if ( ptr == 0 )
{
ptr = mycalloc('t',1,sizeof(*ptr));
if ( ptr == 0 )
printf("fatal alloc error in hashset\n"), exit(-1);
ptr->hh.itemind = m;
ptr->ipbits = tmp.ipbits;
HASH_ADD(hh,coin->iAddrs,ipbits,sizeof(tmp.ipbits),ptr);
if ( i != m )
{
tmp.hh.itemind = m;
fseek(fp,m*sizeof(tmp),SEEK_SET);
fwrite(&tmp,1,sizeof(tmp),fp);
}
//printf("m.%d %x\n",m,tmp.ipbits);
m++;
coin->numiAddrs = m;
expand_ipbits(hexstr,tmp.ipbits);
iguana_possible_peer(coin,hexstr);
}
portable_mutex_unlock(&coin->peers_mutex);
}
}
fclose(fp);
printf("i.%d m.%d numiAddrs.%d\n",i,m,coin->numiAddrs);
}
return(coin->numiAddrs);
}
if ( rwflag == 0 )
{
memset(iA,0,sizeof(*iA));
if ( (fp= fopen(fname,"rb")) != 0 )
{
fseek(fp,ind * sizeof(*iA),SEEK_SET);
if ( ftell(fp) == ind * sizeof(*iA) )
{
if ( fread(iA,1,sizeof(*iA),fp) != sizeof(*iA) )
printf("iAddr: error loading.[%d]\n",ind);
else
{
if ( (iA= iguana_iAddrhashset(coin,iA,ind)) != 0 )
{
retval = iA->hh.itemind+1;
//printf("r %p ipbits.%x ind.%d saved iA->ind.%d retval.%d\n",iA,iA->ipbits,ind,iA->hh.itemind,retval);
}
}
} else printf("iAddr: error seeking.[%d] %ld vs %ld\n",ind,ftell(fp),ind * sizeof(*iA));
fclose(fp);
}
}
else
{
if ( (fp= fopen(fname,"rb+")) == 0 )
fp = fopen(fname,"wb");
if ( fp != 0 )
{
fseek(fp,ind * sizeof(*iA),SEEK_SET);
if ( ftell(fp) == ind * sizeof(*iA) )
{
iA->hh.itemind = ind;
if ( fwrite(iA,1,sizeof(*iA),fp) != sizeof(*iA) )
printf("iAddr: error saving.[%d]\n",ind);
else
{
if ( (iA= iguana_iAddrhashset(coin,iA,ind)) != 0 )
{
retval = iA->hh.itemind+1;
//printf("W %p ipbits.%x ind.%d saved iA->ind.%d retval.%d\n",iA,iA->ipbits,ind,iA->hh. itemind,retval);
}
}
} else printf("iAddr: error seeking.[%d] %ld vs %ld\n",ind,ftell(fp),ind * sizeof(*iA));
fclose(fp);
} else printf("error creating.(%s)\n",fname);
}
return(retval);
}
void iguana_iAconnected(struct iguana_info *coin,struct iguana_peer *addr)
{
struct iguana_iAddr *iA;
if ( (iA= iguana_iAddrhashfind(coin,addr->ipbits,1)) != 0 )
{
iA->status = IGUANA_PEER_READY;
if ( addr->height > iA->height )
iA->height = addr->height;
iA->numconnects++;
iA->lastconnect = (uint32_t)time(NULL);
if ( iguana_rwiAddrind(coin,1,iA,iA->hh.itemind) == 0 )
printf("iguana_iAconnected (%s) save error iA->ind.%d\n",addr->ipaddr,iA->hh.itemind);
//else printf("iguana_iAconnected.(%s)\n",addr->ipaddr);
} else printf("iguana_iAconnected error getting iA\n");
}
void iguana_iAkill(struct iguana_info *coin,struct iguana_peer *addr,int32_t markflag)
{
struct iguana_iAddr *iA; int32_t rank; char ipaddr[64];
if ( addr->ipbits == 0 )
{
printf("cant iAkill null ipbits\n");
return;
}
rank = addr->rank;
strcpy(ipaddr,addr->ipaddr);
if ( addr->usock >= 0 )
closesocket(addr->usock), addr->usock = -1;
if ( addr == coin->peers.localaddr )
coin->peers.localaddr = 0;
//printf("iAkill.(%s)\n",addr->ipaddr);
if ( (iA= iguana_iAddrhashfind(coin,addr->ipbits,1)) != 0 )
{
iA->status = IGUANA_PEER_KILLED;
if ( addr->height > iA->height )
iA->height = addr->height;
if ( markflag != 0 )
{
iA->numkilled++;
iA->lastkilled = (uint32_t)time(NULL);
if ( iguana_rwiAddrind(coin,1,iA,iA->hh.itemind) == 0 )
printf("killconnection (%s) save error\n",addr->ipaddr);
}
} else printf("killconnection cant get ind for ipaddr.%s\n",addr->ipaddr);
memset(addr,0,sizeof(*addr));
addr->usock = -1;
if ( rank > 0 )
iguana_possible_peer(coin,ipaddr);
}
int32_t iguana_socket(int32_t bindflag,char *hostname,uint16_t port)
{
int32_t opt,sock,result; char ipaddr[64],checkipaddr[64]; struct timeval timeout;
struct sockaddr_in saddr; socklen_t addrlen,slen;
addrlen = sizeof(saddr);
struct hostent *hostent;
if ( parse_ipaddr(ipaddr,hostname) != 0 )
port = parse_ipaddr(ipaddr,hostname);
hostent = gethostbyname(ipaddr);
if ( hostent == NULL )
{
printf("gethostbyname(%s) returned error: %d port.%d ipaddr.(%s)\n",hostname,errno,port,ipaddr);
return(-1);
}
saddr.sin_family = AF_INET;
saddr.sin_port = htons(port);
memcpy(&saddr.sin_addr.s_addr,hostent->h_addr_list[0],hostent->h_length);
expand_ipbits(checkipaddr,saddr.sin_addr.s_addr);
if ( strcmp(ipaddr,checkipaddr) != 0 )
printf("bindflag.%d iguana_socket mismatch (%s) -> (%s)?\n",bindflag,checkipaddr,ipaddr);
if ( (sock= socket(AF_INET,SOCK_STREAM,0)) < 0 )
{
if ( errno != ETIMEDOUT )
printf("socket() failed: %s errno.%d", strerror(errno),errno);
return(-1);
}
opt = 1;
slen = sizeof(opt);
//printf("set keepalive.%d\n",setsockopt(sock,SOL_SOCKET,SO_KEEPALIVE,(void *)&opt,slen));
if ( 1 )//&& bindflag != 0 )
{
if ( 1 )
{
timeout.tv_sec = 0;
timeout.tv_usec = 30000;
setsockopt(sock,SOL_SOCKET,SO_RCVTIMEO,(void *)&timeout,sizeof(timeout));
}
opt = 0;
getsockopt(sock,SOL_SOCKET,SO_KEEPALIVE,(void *)&opt,&slen);
opt = 1;
//printf("keepalive.%d\n",opt);
} else setsockopt(sock,SOL_SOCKET,SO_REUSEADDR,(void *)&opt,sizeof(opt));
#ifdef __APPLE__
setsockopt(sock,SOL_SOCKET,SO_NOSIGPIPE,&opt,sizeof(opt));
#endif
if ( bindflag == 0 )
{
result = connect(sock,(struct sockaddr *)&saddr,addrlen);
if ( result != 0 )
{
if ( errno != ECONNRESET && errno != ENOTCONN && errno != ECONNREFUSED && errno != ETIMEDOUT && errno != EHOSTUNREACH )
printf("%s(%s) port.%d failed: %s sock.%d. errno.%d\n",bindflag!=0?"bind":"connect",hostname,port,strerror(errno),sock,errno);
if ( sock >= 0 )
closesocket(sock);
return(-1);
}
}
else
{
while ( (result= bind(sock,(struct sockaddr*)&saddr,addrlen)) != 0 )
{
if ( errno == EADDRINUSE )
{
printf("%s(%s) port.%d try again: %s sock.%d. errno.%d\n",bindflag!=0?"bind":"connect",hostname,port,strerror(errno),sock,errno);
sleep(13);
continue;
}
if ( errno != ECONNRESET && errno != ENOTCONN && errno != ECONNREFUSED && errno != ETIMEDOUT && errno != EHOSTUNREACH )
{
printf("%s(%s) port.%d failed: %s sock.%d. errno.%d\n",bindflag!=0?"bind":"connect",hostname,port,strerror(errno),sock,errno);
closesocket(sock);
return(-1);
}
}
if ( listen(sock,64) != 0 )
{
printf("listen(%s) port.%d failed: %s sock.%d. errno.%d\n",hostname,port,strerror(errno),sock,errno);
if ( sock >= 0 )
closesocket(sock);
return(-1);
}
}
return(sock);
}
int32_t iguana_send(struct iguana_info *coin,struct iguana_peer *addr,uint8_t *serialized,int32_t len)
{
int32_t numsent,remains,usock;
if ( addr == 0 && coin->peers.numranked > 1 )
addr = coin->peers.ranked[rand() % coin->peers.numranked];
if ( addr == 0 )
return(-1);
usock = addr->usock;
if ( usock < 0 || addr->dead != 0 )
{
return(-1);
}
remains = len;
if ( strncmp((char *)&serialized[4],"SuperNET",strlen("SuperNET")) == 0 )
{
//printf(" >>>>>>> send.(%s) %d bytes to %s supernet.%d\n",(char *)&serialized[4],len,addr->ipaddr,addr->supernet);
}
else if ( addr->msgcounts.verack == 0 && (strcmp((char *)&serialized[4],"version") != 0 && strcmp((char *)&serialized[4],"verack") != 0) != 0 )
{
printf("skip.(%s) since no verack yet\n",(char *)&serialized[4]);
return(-1);
}
if ( strcmp((char *)&serialized[4],"ping") == 0 )
addr->sendmillis = OS_milliseconds();
if ( len > IGUANA_MAXPACKETSIZE )
printf("sending too big! %d\n",len);
while ( remains > 0 )
{
if ( coin->peers.shuttingdown != 0 )
return(-1);
if ( (numsent= (int32_t)send(usock,serialized,remains,MSG_NOSIGNAL)) < 0 )
{
printf("send errno.%d %s\n",errno,strerror(errno));
if ( errno != EAGAIN && errno != EWOULDBLOCK )
{
printf("%s: %s numsent.%d vs remains.%d len.%d errno.%d (%s) usock.%d\n",serialized+4,addr->ipaddr,numsent,remains,len,errno,strerror(errno),addr->usock);
printf("bad errno.%d %s zombify.%p\n",errno,strerror(errno),&addr->dead);
addr->dead = (uint32_t)time(NULL);
return(-errno);
} //else usleep(*sleeptimep), *sleeptimep *= 1.1;
}
else if ( remains > 0 )
{
remains -= numsent;
serialized += numsent;
if ( remains > 0 )
printf("iguana sent.%d remains.%d of len.%d\n",numsent,remains,len);
}
}
addr->totalsent += len;
//printf(" %s sent.%d bytes to %s\n",(char *)&serialized[4],len,addr->ipaddr);// getchar();
return(len);
}
int32_t iguana_queue_send(struct iguana_info *coin,struct iguana_peer *addr,int32_t delay,uint8_t *serialized,char *cmd,int32_t len,int32_t getdatablock,int32_t forceflag)
{
struct iguana_packet *packet; int32_t datalen;
if ( addr == 0 )
{
printf("iguana_queue_send null addr\n");
exit(-1);
return(-1);
}
datalen = iguana_sethdr((void *)serialized,coin->chain->netmagic,cmd,&serialized[sizeof(struct iguana_msghdr)],len);
if ( strcmp("getaddr",cmd) == 0 && time(NULL) < addr->lastgotaddr+300 )
return(0);
//if ( strcmp("version",cmd) == 0 )
// return(iguana_send(coin,addr,serialized,datalen));
packet = mycalloc('S',1,sizeof(struct iguana_packet) + datalen);
packet->datalen = datalen;
packet->addr = addr;
if ( delay != 0 )
{
if ( delay > IGUANA_MAXDELAY_MILLIS )
delay = IGUANA_MAXDELAY_MILLIS;
packet->embargo = tai_now();
packet->embargo.millis += delay;
}
memcpy(packet->serialized,serialized,datalen);
//printf("%p queue send.(%s) %d to (%s)\n",packet,serialized+4,datalen,addr->ipaddr);
queue_enqueue("sendQ",&addr->sendQ,&packet->DL,0);
return(datalen);
}
int32_t iguana_recv(char *ipaddr,int32_t usock,uint8_t *recvbuf,int32_t len)
{
int32_t recvlen,remains = len;
while ( remains > 0 )
{
if ( (recvlen= (int32_t)recv(usock,recvbuf,remains,0)) < 0 )
{
printf("%s recv errno.%d %s\n",ipaddr,errno,strerror(errno));
if ( errno == EAGAIN )
{
//printf("EAGAIN for len %d, remains.%d\n",len,remains);
sleep(1);
} else return(-errno);
}
else
{
if ( recvlen > 0 )
{
remains -= recvlen;
recvbuf = &recvbuf[recvlen];
} else usleep(10000);
if ( 0 && remains > 0 )
printf("got %d remains.%d of total.%d\n",recvlen,remains,len);
}
}
return(len);
}
void iguana_parsebuf(struct iguana_info *coin,struct iguana_peer *addr,struct iguana_msghdr *H,uint8_t *buf,int32_t len)
{
struct iguana_msghdr checkH;
memset(&checkH,0,sizeof(checkH));
iguana_sethdr(&checkH,coin->chain->netmagic,H->command,buf,len);
if ( memcmp(&checkH,H,sizeof(checkH)) == 0 )
{
if ( strcmp(H->command,"block") == 0 || strcmp(H->command,"tx") == 0 )
{
if ( addr->RAWMEM.ptr == 0 )
iguana_meminit(&addr->RAWMEM,addr->ipaddr,0,IGUANA_MAXPACKETSIZE,0);
if ( addr->TXDATA.ptr == 0 )
iguana_meminit(&addr->TXDATA,"txdata",0,IGUANA_MAXPACKETSIZE,0);
if ( addr->HASHMEM.ptr == 0 )
iguana_meminit(&addr->HASHMEM,"HASHPTRS",0,256,0);//IGUANA_MAXPACKETSIZE*16,0);
//printf("Init %s memory %p %p %p\n",addr->ipaddr,addr->RAWMEM.ptr,addr->TXDATA.ptr,addr->HASHMEM.ptr);
}
if ( iguana_msgparser(coin,addr,&addr->RAWMEM,&addr->TXDATA,&addr->HASHMEM,H,buf,len) < 0 || addr->dead != 0 )
{
printf("%p addr->dead.%d or parser break at %u\n",&addr->dead,addr->dead,(uint32_t)time(NULL));
addr->dead = (uint32_t)time(NULL);
}
else
{
addr->numpackets++;
addr->totalrecv += len;
coin->totalrecv += len, coin->totalpackets++;
//printf("next iter.(%s) numreferrals.%d numpings.%d\n",addr->ipaddr,addr->numreferrals,addr->numpings);
}
} else printf("header error from %s\n",addr->ipaddr);
}
void _iguana_processmsg(struct iguana_info *coin,int32_t usock,struct iguana_peer *addr,uint8_t *_buf,int32_t maxlen)
{
int32_t len,recvlen; void *buf = _buf; struct iguana_msghdr H;
if ( coin->peers.shuttingdown != 0 || addr->dead != 0 )
return;
memset(&H,0,sizeof(H));
if ( (recvlen= (int32_t)iguana_recv(addr->ipaddr,usock,(uint8_t *)&H,sizeof(H))) == sizeof(H) )
{
if ( coin->peers.shuttingdown != 0 || addr->dead != 0 )
return;
{
iguana_rwnum(0,H.serdatalen,sizeof(H.serdatalen),(uint32_t *)&len);
//printf("%p got.(%s) recvlen.%d from %s | usock.%d ready.%u dead.%u len.%d\n",addr,H.command,recvlen,addr->ipaddr,addr->usock,addr->ready,addr->dead,len);
}
if ( (len= iguana_validatehdr(&H)) >= 0 )
{
if ( len > 0 )
{
if ( len > IGUANA_MAXPACKETSIZE )
{
printf("buffer %d too small for %d\n",IGUANA_MAXPACKETSIZE,len);
return;
}
if ( len > maxlen )
buf = mycalloc('p',1,len);
if ( (recvlen= iguana_recv(addr->ipaddr,usock,buf,len)) < 0 )
{
printf("recv error on (%s) len.%d errno.%d (%s)\n",H.command,len,-recvlen,strerror(-recvlen));
if ( buf != _buf )
myfree(buf,len);
addr->dead = (uint32_t)time(NULL);
return;
}
}
iguana_parsebuf(coin,addr,&H,buf,len);
if ( buf != _buf )
myfree(buf,len);
return;
}
printf("invalid header received from (%s)\n",addr->ipaddr);
addr->dead = 1;
}
printf("%s recv error on hdr errno.%d (%s) -> zombify\n",addr->ipaddr,-recvlen,strerror(-recvlen));
#ifndef IGUANA_DEDICATED_THREADS
addr->dead = 1;
#endif
}
void iguana_gotdata(struct iguana_info *coin,struct iguana_peer *addr,int32_t height)
{
struct iguana_iAddr *iA;
if ( addr != 0 && height > addr->height && height < coin->longestchain )
{
if ( (iA= iguana_iAddrhashfind(coin,addr->ipbits,0)) != 0 && iA->height < height )
iA->height = height;
//iguana_set_iAddrheight(coin,addr->ipbits,height);
addr->height = height;
}
if ( height > coin->longestchain )
coin->longestchain = height;
}
int32_t iguana_iAddrheight(struct iguana_info *coin,uint64_t ipbits)
{
struct iguana_iAddr *iA;
if ( (iA= iguana_iAddrhashfind(coin,ipbits,0)) != 0 )
return(iA->height);
return(0);
}
void iguana_startconnection(void *arg)
{
int32_t i,n; uint16_t port; char ipaddr[64]; struct iguana_peer *addr = arg; struct iguana_info *coin = 0;
if ( addr == 0 || (coin= iguana_coinfind(addr->symbol)) == 0 )
{
printf("iguana_startconnection nullptrs addr.%p coin.%p\n",addr,coin);
return;
}
addr->addrind = (int32_t)(((long)addr - (long)&coin->peers.active[0]) / sizeof(*addr));
if ( addr->usock >= 0 )
{
printf("%s usock.%d skip connection\n",addr->ipaddr,addr->usock);
return;
}
if ( strcmp(coin->name,addr->coinstr) != 0 )
{
printf("iguana_startconnection.%s mismatched coin.%p (%s) vs (%s)\n",addr->ipaddr,coin,coin->symbol,addr->coinstr);
return;
}
if ( strcmp("127.0.0.1",addr->ipaddr) == 0 && (coin->myservices & NODE_NETWORK) != 0 )
{
iguana_iAkill(coin,addr,0);
printf("avoid self-loopback\n");
return;
}
//printf("startconnection.(%s) pending.%u usock.%d addrind.%d\n",addr->ipaddr,addr->pending,addr->usock,addr->addrind);
addr->pending = (uint32_t)time(NULL);
if ( (port= (uint16_t)(addr->ipbits >> 32)) == 0 )
port = coin->chain->portp2p;
if ( addr->usock < 0 )
addr->usock = iguana_socket(0,addr->ipaddr,port);
if ( addr->usock < 0 || coin->peers.shuttingdown != 0 )
{
strcpy(ipaddr,addr->ipaddr);
iguana_iAkill(coin,addr,1);
//printf("refused PEER KILLED. for %s:%d usock.%d\n",addr->ipaddr,coin->chain->portp2p,addr->usock);
}
else
{
addr->ready = (uint32_t)time(NULL);
addr->ipbits = calc_ipbits(addr->ipaddr);
addr->dead = 0;
addr->pending = 0;
addr->height = iguana_iAddrheight(coin,addr->ipbits);
strcpy(addr->symbol,coin->symbol);
strcpy(addr->coinstr,coin->name);
coin->peers.lastpeer = (uint32_t)time(NULL);
for (i=n=0; i<coin->MAXPEERS; i++)
if ( coin->peers.active[i].usock > 0 )
n++;
iguana_iAconnected(coin,addr);
coin->peers.numconnected++;
printf("PEER CONNECTED.%d:%d of max.%d! %s:%d usock.%d\n",coin->peers.numconnected,n,coin->MAXPEERS,addr->ipaddr,coin->chain->portp2p,addr->usock);
if ( strcmp("127.0.0.1",addr->ipaddr) == 0 )
coin->peers.localaddr = addr;
else if ( coin->peers.numranked == 0 )
coin->peers.ranked[0] = addr;
#ifdef IGUANA_DEDICATED_THREADS
//iguana_launch("recv",iguana_dedicatedrecv,addr,IGUANA_RECVTHREAD);
iguana_dedicatedloop(coin,addr);
#endif
}
}
struct iguana_peer *iguana_peerslot(struct iguana_info *coin,uint64_t ipbits)
{
int32_t i; struct iguana_peer *addr; char ipaddr[64];
for (i=0; i<IGUANA_MAXPEERS; i++)
if ( ipbits == coin->peers.active[i].ipbits )
return(0);
expand_ipbits(ipaddr,ipbits);
#ifdef IGUANA_DISABLEPEERS
if ( strcmp("127.0.0.1",ipaddr) != 0 )
return(0);
#endif
//portable_mutex_lock(&coin->peers_mutex);
for (i=0; i<coin->MAXPEERS && i<IGUANA_MAXPEERS; i++)
{
addr = &coin->peers.active[i];
addr->addrind = i;
if ( addr->usock >= 0 || addr->pending != 0 || addr->ipbits == ipbits || strcmp(ipaddr,addr->ipaddr) == 0 )
{
//printf("skip.(%s) usock.%d pending.%d ipbits.%x vs %x lag.%ld\n",addr->ipaddr,addr->usock,addr->pending,addr->ipbits,iA->ipbits,time(NULL)-addr->pending);
continue;
}
portable_mutex_lock(&coin->peers_mutex);
if ( addr->ipbits == 0 )
{
iguana_initpeer(coin,addr,ipbits);
//addr->pending = (uint32_t)time(NULL);
portable_mutex_unlock(&coin->peers_mutex);
return(addr);
}
portable_mutex_unlock(&coin->peers_mutex);
}
return(0);
}
void *iguana_iAddriterator(struct iguana_info *coin,struct iguana_iAddr *iA)
{
struct iguana_peer *addr = 0;
if ( iA != 0 && iA->ipbits != 0 && iguana_numthreads(coin,1 << IGUANA_CONNTHREAD) < IGUANA_MAXCONNTHREADS && iA->status == IGUANA_PEER_ELIGIBLE )
{
//printf("%x\n",iA->ipbits);
//portable_mutex_unlock(&coin->peers_mutex);
if ( (addr= iguana_peerslot(coin,iA->ipbits)) != 0 )//i < coin->MAXPEERS && i < IGUANA_MAXPEERS && addr != 0 )
{
//printf("pend.%d status.%d possible peer.(%s).%x threads %d %d %d %d\n",addr->pending,iA->status,addr->ipaddr,addr->ipbits,iguana_numthreads(coin,0),iguana_numthreads(coin,1),iguana_numthreads(coin,2),iguana_numthreads(coin,3));
if ( addr->pending == 0 && iA->status != IGUANA_PEER_CONNECTING )
{
iA->status = IGUANA_PEER_CONNECTING;
addr->pending = (uint32_t)time(NULL);
if ( iguana_rwiAddrind(coin,1,iA,iA->hh.itemind) > 0 )
{
//printf("iA.%p iguana_startconnection.(%s) status.%d pending.%d\n",iA,addr->ipaddr,iA->status,addr->pending);
iguana_launch(coin,"connection",iguana_startconnection,addr,IGUANA_CONNTHREAD);
} else printf("error rwiAddrind.%d\n",iA->hh.itemind);
}
} else printf("no open peer slots left\n");
}
//else if ( iA != 0 )
// printf("iA->ipbits %d, %d iguana_numthreads(coin,1 << IGUANA_CONNTHREAD) status.%d\n",iA->ipbits,iguana_numthreads(coin,1 << IGUANA_CONNTHREAD),iA->status);
//else printf("connector null iA\n");
return(0);
}
uint32_t iguana_possible_peer(struct iguana_info *coin,char *ipaddr)
{
char checkaddr[64]; uint64_t ipbits; uint32_t now = (uint32_t)time(NULL); int32_t i,n; struct iguana_iAddr *iA;
if ( ipaddr != 0 )
{
//printf("%p Q possible peer.(%s)\n",coin,ipaddr);
queue_enqueue("possibleQ",&coin->possibleQ,queueitem(ipaddr),1);
return((uint32_t)time(NULL));
}
else if ( iguana_pendingaccept(coin) != 0 )
return((uint32_t)time(NULL));
else if ( (ipaddr= queue_dequeue(&coin->possibleQ,1)) == 0 )
return((uint32_t)time(NULL));
#ifdef IGUANA_DISABLEPEERS
if ( strcmp(ipaddr,"127.0.0.1") != 0 )
{
free_queueitem(ipaddr);
return((uint32_t)time(NULL));
}
#endif
//printf("check possible peer.(%s)\n",ipaddr);
for (i=n=0; i<coin->MAXPEERS; i++)
{
if ( strcmp(ipaddr,coin->peers.active[i].ipaddr) == 0 )
{
printf("(%s) already active\n",ipaddr);
free_queueitem(ipaddr);
return((uint32_t)time(NULL));
}
else if ( coin->peers.active[i].ipaddr[0] != 0 )
n++;
}
if ( n >= coin->MAXPEERS-(coin->MAXPEERS>>3)-1 )
return((uint32_t)time(NULL));
if ( strncmp("0.0.0",ipaddr,5) != 0 && strcmp("0.0.255.255",ipaddr) != 0 && strcmp("1.0.0.0",ipaddr) != 0 )
{
if ( (ipbits= calc_ipbits(ipaddr)) != 0 )
{
expand_ipbits(checkaddr,ipbits);
if ( strcmp(checkaddr,ipaddr) == 0 )
{
//printf("valid ipaddr.(%s) MAXPEERS.%d\n",ipaddr,coin->MAXPEERS);
if ( (iA= iguana_iAddrhashfind(coin,ipbits,1)) != 0 )
{
if ( iA->status != IGUANA_PEER_CONNECTING && iA->status != IGUANA_PEER_READY && iA->status != IGUANA_PEER_ELIGIBLE )
{
if ( (iA->lastconnect == 0 || iA->lastkilled == 0) || (iA->numconnects > 0 && iA->lastconnect > (now - IGUANA_RECENTPEER)) || iA->lastkilled < now-600 )
{
iA->status = IGUANA_PEER_ELIGIBLE;
if ( iguana_rwiAddrind(coin,1,iA,iA->hh.itemind) == 0 )
printf("error updating status for (%s) ind.%d\n",ipaddr,iA->hh.itemind);
iguana_iAddriterator(coin,iA);
} else printf("ignore.(%s) lastconnect.%u lastkilled.%u numconnects.%d\n",ipaddr,iA->lastconnect,iA->lastkilled,iA->numconnects);
} else printf("skip.(%s) ind.%d status.%d\n",ipaddr,iA->hh.itemind,iA->status);
} else printf("cant find (%s) which should have been created\n",ipaddr);
} else printf("reject ipaddr.(%s)\n",ipaddr);
}
}
free_queueitem(ipaddr);
return((uint32_t)time(NULL));
}
void iguana_processmsg(void *ptr)
{
struct iguana_info *coin; uint8_t buf[32768]; struct iguana_peer *addr = ptr;
if ( addr == 0 || (coin= iguana_coinfind(addr->symbol)) == 0 || addr->dead != 0 )
{
printf("iguana_processmsg cant find addr.%p symbol.%s\n",addr,addr!=0?addr->symbol:0);
return;
}
_iguana_processmsg(coin,addr->usock,addr,buf,sizeof(buf));
addr->startrecv = 0;
}
int32_t iguana_pollsendQ(struct iguana_info *coin,struct iguana_peer *addr)
{
struct iguana_packet *packet;
if ( (packet= queue_dequeue(&addr->sendQ,0)) != 0 )
{
if ( 0 && (addr->supernet != 0 || strcmp((char *)&packet->serialized[4],"SuperNET") == 0) )
printf("%s: send.(%s).%d usock.%d dead.%u ready.%u supernet.%d\n",addr->ipaddr,packet->serialized+4,packet->datalen,addr->usock,addr->dead,addr->ready,addr->supernet);
if ( strcmp((char *)&packet->serialized[4],"getdata") == 0 )
{
printf("unexpected getdata for %s\n",addr->ipaddr);
myfree(packet,sizeof(*packet) + packet->datalen);
}
else if ( packet->embargo.x == 0 || tai_diff(packet->embargo,tai_now()) >= -SMALLVAL )
{
iguana_send(coin,addr,packet->serialized,packet->datalen);
myfree(packet,sizeof(*packet) + packet->datalen);
return(1);
}
else
{
//printf("embargo.x %llu %f\n",(long long)packet->embargo.x,tai_diff(packet->embargo,tai_now()));
queue_enqueue("embargo",&addr->sendQ,&packet->DL,0);
}
}
return(0);
}
int32_t iguana_pollrecv(struct iguana_info *coin,struct iguana_peer *addr,uint8_t *buf,int32_t bufsize)
{
#ifndef IGUANA_DEDICATED_THREADS
strcpy(addr->symbol,coin->symbol);
if ( addr != coin->peers.localaddr )
{
addr->startrecv = (uint32_t)time(NULL);
iguana_launch("processmsg",iguana_processmsg,addr,IGUANA_RECVTHREAD);
}
else
#endif
_iguana_processmsg(coin,addr->usock,addr,buf,bufsize);
return(1);
}
#ifdef IGUANA_PEERALLOC
void *iguana_peeralloc(struct iguana_info *coin,struct iguana_peer *addr,int32_t datalen)
{
struct OS_memspace *mem; long i,iter; int32_t j,diff,size,bestfit; void *ptr;
//printf("iguana_peeralloc.%s\n",addr->ipaddr);
while ( 1 )
{
bestfit = -1;
for (iter=0; iter<3; iter++)
{
for (i=0; i<sizeof(addr->SEROUT)/sizeof(*addr->SEROUT); i++)
{
mem = addr->SEROUT[i];
if ( mem->threadsafe != 0 )
portable_mutex_lock(&mem->mutex);
if ( iter < 2 && mem->availptrs > 0 )
{
for (j=0; j<mem->numptrs; j++)
{
if ( mem->allocsizes[j] == 0 )
{
size = mem->maxsizes[j];
if ( size >= datalen )
{
diff = (size - datalen);
if ( diff == 0 || (iter == 1 && diff == bestfit) )
{
mem->allocsizes[j] = datalen;
mem->availptrs--;
//printf("%s availptrs.%d size.%d j.%d diff.%d bestfit.%d %p.%d max.%d\n",mem->name,mem->availptrs,size,j,diff,bestfit,mem->ptrs[j],size,mem->maxsizes[j]);
if ( mem->threadsafe != 0 )
portable_mutex_unlock(&mem->mutex);
return(mem->ptrs[j]);
}
else if ( iter == 0 && diff < (datalen >> 3) && diff < 4096 )
bestfit = diff;
}
}
}
}
else if ( iter == 2 && (ptr= iguana_memalloc(mem,datalen,0)) != 0 )
{
if ( mem->threadsafe != 0 )
portable_mutex_unlock(&mem->mutex);
///printf("alloc iter.2\n");
return(ptr);
}
if ( mem->threadsafe != 0 )
portable_mutex_unlock(&mem->mutex);
//printf("iter.%ld bestfit.%d\n",iter,bestfit);
}
}
printf("iguana_peeralloc: cant find memory. wait and hope...\n");
sleep(5);
}
return(0);
}
int64_t iguana_peerallocated(struct iguana_info *coin,struct iguana_peer *addr)
{
int32_t i; int64_t total = 0;
for (i=0; i<sizeof(addr->SEROUT)/sizeof(*addr->SEROUT); i++)
if ( addr->SEROUT[i] != 0 )
total += iguana_memallocated(addr->SEROUT[i]);
return(total);
}
int64_t iguana_peerfree(struct iguana_info *coin,struct iguana_peer *addr,void *ptr,int32_t datalen)
{
struct OS_memspace *mem; long offset,i; int64_t avail = -1;
//printf("iguana_peerfree.%p %d\n",ptr,datalen);
for (i=0; i<sizeof(addr->SEROUT)/sizeof(*addr->SEROUT); i++)
{
mem = addr->SEROUT[i];
offset = ((long)ptr - (long)mem->ptr);
if ( offset >= 0 && offset+datalen < mem->totalsize )
{
if ( iguana_memfree(mem,ptr,datalen) < 0 || (avail= iguana_peerallocated(coin,addr)) < 0 )
{
printf("iguana_peerfree: corrupted mem avail.%lld ptr.%p %d\n",(long long)avail,ptr,datalen);
exit(-1);
}
return(avail);
}
}
printf("iguana_peerfree: cant find ptr.%p %d\n",ptr,datalen);
return(-1);
}
#else
void *iguana_peeralloc(struct iguana_info *coin,struct iguana_peer *addr,int32_t datalen)
{
addr->allocated += datalen;
return(calloc(1,datalen));
}
int64_t iguana_peerfree(struct iguana_info *coin,struct iguana_peer *addr,void *ptr,int32_t datalen)
{
addr->freed += datalen;
free(ptr);
return(1);
}
int64_t iguana_peerallocated(struct iguana_info *coin,struct iguana_peer *addr)
{
return(addr->allocated - addr->freed);
}
#endif
void iguana_dedicatedloop(struct iguana_info *coin,struct iguana_peer *addr)
{
static uint32_t lastping;
struct pollfd fds; uint8_t *buf,serialized[64]; struct iguana_bundlereq *req;
uint32_t ipbits; int32_t bufsize,flag,run,timeout = coin->polltimeout == 0 ? 10 : coin->polltimeout;
#ifdef IGUANA_PEERALLOC
int32_t i; int64_t remaining; struct OS_memspace *mem[sizeof(addr->SEROUT)/sizeof(*addr->SEROUT)];
for (i=0; i<sizeof(addr->SEROUT)/sizeof(*addr->SEROUT); i++)
{
mem[i] = mycalloc('s',1,sizeof(*mem[i]));
addr->SEROUT[i] = mem[i];
mem[i]->totalsize = IGUANA_MAXPACKETSIZE;
mem[i]->ptr = mycalloc('P',1,mem[i]->totalsize);
mem[i]->used = 0;
strcpy(mem[i]->name,addr->ipaddr);
//mem[i]->threadsafe = 1;
iguana_memreset(mem[i]);
}
#endif
addr->addrind = (int32_t)(((long)addr - (long)&coin->peers.active[0]) / sizeof(*addr));
ipbits = (uint32_t)addr->ipbits;
addr->pubkey = GENESIS_PUBKEY;
vcalc_sha256(0,addr->iphash.bytes,(uint8_t *)&ipbits,sizeof(ipbits));
char str[65]; printf("start dedicatedloop.%s addrind.%d %s\n",addr->ipaddr,addr->addrind,bits256_str(str,addr->iphash));
addr->maxfilehash2 = IGUANA_MAXFILEITEMS;
bufsize = IGUANA_MAXPACKETSIZE;
buf = mycalloc('r',1,bufsize);
printf("send version myservices.%llu to (%s)\n",(long long)coin->myservices,addr->ipaddr);
iguana_send_version(coin,addr,coin->myservices);
sleep(1+(rand()%5));
iguana_queue_send(coin,addr,0,serialized,"getaddr",0,0,0);
run = 0;
while ( addr->usock >= 0 && addr->dead == 0 && coin->peers.shuttingdown == 0 )
{
if ( 1 && (req= queue_dequeue(&coin->cacheQ,0)) != 0 )
{
if ( req->datalen != 0 )
{
//char str[65]; printf("CACHE parse[%d] %s %s\n",req->recvlen,req->H.command,bits256_str(str,req->block.RO.hash2));
iguana_parsebuf(coin,addr,&req->H,req->serialized,req->recvlen);
} else printf("CACHE error no datalen\n");
coin->cachefreed++;
myfree(req,req->allocsize);
continue;
}
flag = 0;
memset(&fds,0,sizeof(fds));
fds.fd = addr->usock;
fds.events |= (POLLOUT | POLLIN);
if ( poll(&fds,1,timeout) > 0 && (fds.revents & POLLOUT) != 0 )
{
flag += iguana_pollsendQ(coin,addr);
if ( addr->dead != 0 )
{
printf("%s is dead\n",addr->ipaddr);
break;
}
}
if ( flag == 0 )
{
if ( (fds.revents & POLLIN) != 0 )
{
flag += iguana_pollrecv(coin,addr,buf,bufsize);
if ( addr->dead != 0 )
{
printf("%s is dead\n",addr->ipaddr);
break;
}
}
if ( flag == 0 )
{
if ( coin->active != 0 && (fds.revents & POLLOUT) != 0 )
{
if ( iguana_pollQsPT(coin,addr) > 0 )
{
//printf("pollQ!\n");
flag++;
}
if ( addr->dead != 0 )
{
printf("%s is dead\n",addr->ipaddr);
break;
}
}
}
if ( flag == 0 )
{
if ( run++ > 1000 )
{
//printf("sleep\n");
usleep(100000);
}
else if ( addr->rank != 1 )
usleep(coin->polltimeout*100 + 1*(rand() % (coin->polltimeout*100)));
else usleep(100);
} else run >>= 2;
}
if ( flag != 0 )
run = 0;
else if ( addr->supernet != 0 && time(NULL) > lastping+SUPERNET_PINGGAP )
{
iguana_send_supernet(coin,addr,"{\"agent\":\"SuperNET\",\"method\":\"getpeers\"}",0);
lastping = (uint32_t)time(NULL);
}
if ( coin->isRT != 0 && addr->rank > coin->MAXPEERS && (rand() % 100) == 0 )
{
printf("isRT and low rank.%d ",addr->rank);
addr->dead = 1;
}
}
printf(">>>>>>>>>>>>>> finish dedicatedloop.%s\n",addr->ipaddr);
//if ( addr->fp != 0 )
// fclose(addr->fp);
iguana_iAkill(coin,addr,addr->dead != 0);
myfree(buf,bufsize);
if ( addr->filehash2 != 0 )
myfree(addr->filehash2,addr->maxfilehash2*sizeof(*addr->filehash2));
iguana_mempurge(&addr->RAWMEM);
iguana_mempurge(&addr->TXDATA);
iguana_mempurge(&addr->HASHMEM);
#ifdef IGUANA_PEERALLOC
while ( (remaining= iguana_peerallocated(coin,addr)) > 0 )
{
char str[65];
printf("waiting for helperQ to flush peer mem %s\n",mbstr(str,remaining));
sleep(5);
}
for (i=0; i<sizeof(addr->SEROUT)/sizeof(*addr->SEROUT); i++)
{
if ( addr->SEROUT[i] != 0 )
{
if ( addr->SEROUT[i]->ptr != 0 )
myfree(addr->SEROUT[i]->ptr,IGUANA_MAXPACKETSIZE);
myfree(addr->SEROUT[i],sizeof(*addr->SEROUT[i]));
}
}
#endif
coin->peers.numconnected--;
}
void iguana_dedicatedglue(void *arg)
{
struct iguana_info *coin = 0; struct iguana_peer *addr = arg;
if ( addr == 0 || (coin= iguana_coinfind(addr->symbol)) == 0 )
{
printf("iguana_dedicatedglue nullptrs addr.%p coin.%p\n",addr,coin);
return;
}
iguana_dedicatedloop(coin,addr);
}
void iguana_peersloop(void *ptr)
{
#ifndef IGUANA_DEDICATED_THREADS
struct pollfd fds[IGUANA_MAXPEERS]; struct iguana_info *coin = ptr;
struct iguana_peer *addr; uint8_t *bufs[IGUANA_MAXPEERS];
int32_t i,j,n,r,nonz,flag,bufsizes[IGUANA_MAXPEERS],timeout=1;
memset(fds,0,sizeof(fds));
memset(bufs,0,sizeof(bufs));
memset(bufsizes,0,sizeof(bufsizes));
while ( 1 )
{
while ( coin->peers.shuttingdown != 0 )
{
printf("peers shuttingdown\n");
sleep(3);
}
flag = 0;
r = (rand() % coin->MAXPEERS);
for (j=n=nonz=0; j<coin->MAXPEERS; j++)
{
i = (j + r) % coin->MAXPEERS;
addr = &coin->peers.active[i];
fds[i].fd = -1;
if ( addr->usock >= 0 && addr->dead == 0 && addr->ready != 0 && (addr->startrecv+addr->startsend) != 0 )
{
fds[i].fd = addr->usock;
fds[i].events = (addr->startrecv != 0) * POLLIN | (addr->startsend != 0) * POLLOUT;
nonz++;
}
}
if ( nonz != 0 && poll(fds,coin->MAXPEERS,timeout) > 0 )
{
for (j=0; j<coin->MAXPEERS; j++)
{
i = (j + r) % coin->MAXPEERS;
addr = &coin->peers.active[i];
if ( addr->usock < 0 || addr->dead != 0 || addr->ready == 0 )
continue;
if ( addr->startrecv == 0 && (fds[i].revents & POLLIN) != 0 && iguana_numthreads(1 << IGUANA_RECVTHREAD) < IGUANA_MAXRECVTHREADS )
{
if ( bufs[i] == 0 )
bufsizes[i] = IGUANA_MAXPACKETSIZE, bufs[i] = mycalloc('r',1,bufsizes[i]);
flag += iguana_pollrecv(coin,addr,bufs[i],bufsizes[i]);
}
if ( addr->startsend == 0 && (fds[i].revents & POLLOUT) != 0 && iguana_numthreads(1 << IGUANA_SENDTHREAD) < IGUANA_MAXSENDTHREADS )
{
if ( iguana_pollsendQ(coin,addr) == 0 )
flag += iguana_poll(coin,addr);
else flag++;
}
}
}
if ( flag == 0 )
{
if ( time(NULL) > lastping+1 )
iguana_send_supernet(coin,addr,"{\"agent\":\"SuperNET\",\"method\":\"getpeers\"}",0);
usleep(1000);
}
}
#endif
}