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228 lines
8.5 KiB
228 lines
8.5 KiB
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/******************************************************************************
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* Copyright © 2014-2017 The SuperNET Developers. *
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* *
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* See the AUTHORS, DEVELOPER-AGREEMENT and LICENSE files at *
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* the top-level directory of this distribution for the individual copyright *
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* holder information and the developer policies on copyright and licensing. *
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* *
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* Unless otherwise agreed in a custom licensing agreement, no part of the *
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* SuperNET software, including this file may be copied, modified, propagated *
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* or distributed except according to the terms contained in the LICENSE file *
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* *
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* Removal or modification of this copyright notice is prohibited. *
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* *
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******************************************************************************/
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//
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// LP_forwarding.c
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// marketmaker
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//
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struct LP_forwardinfo
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{
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UT_hash_handle hh;
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bits256 pubkey;
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char pushaddr[64];
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int32_t pushsock;
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uint32_t lasttime;
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} *LP_forwardinfos;
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#define LP_KEEPALIVE (3600 * 24)
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struct LP_forwardinfo *LP_forwardfind(bits256 pubkey)
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{
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struct LP_forwardinfo *ptr=0;
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portable_mutex_lock(&LP_forwardmutex);
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HASH_FIND(hh,LP_forwardinfos,&pubkey,sizeof(pubkey),ptr);
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portable_mutex_unlock(&LP_forwardmutex);
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if ( ptr != 0 && ptr->lasttime > time(NULL)-LP_KEEPALIVE )
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return(ptr);
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else return(0);
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}
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char *LP_lookup(bits256 pubkey)
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{
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if ( bits256_nonz(pubkey) == 0 )
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return(clonestr("{\"error\":\"illegal pubkey\"}"));
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if ( LP_forwardfind(pubkey) != 0 )
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return(clonestr("{\"result\":\"success\",\"forwarding\":1}"));
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else return(clonestr("{\"error\":\"notfound\"}"));
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}
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char *LP_register(bits256 pubkey,char *ipaddr)
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{
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struct LP_forwardinfo *ptr=0; int32_t pushsock; char pushaddr[64];
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if ( ipaddr == 0 || ipaddr[0] == 0 || is_ipaddr(ipaddr) == 0 || bits256_nonz(pubkey) == 0 )
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return(clonestr("{\"error\":\"illegal ipaddr or null pubkey\"}"));
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//if ( strlen(pushaddr) <= strlen("tcp://") || is_ipaddr(pushaddr+strlen("tcp://")) == 0 )
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// return(clonestr("{\"error\":\"illegal ipaddr\"}"));
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sprintf(pushaddr,"tcp://%s",ipaddr);
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char str[65]; printf("register.(%s) %s\n",pushaddr,bits256_str(str,pubkey));
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if ( (ptr= LP_forwardfind(pubkey)) != 0 )
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{
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ptr->lasttime = (uint32_t)time(NULL);
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return(clonestr("{\"error\":\"already registered\",\"registered\":1}"));
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}
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else if ( (pushsock= nn_socket(AF_SP,NN_PUSH)) < 0 )
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return(clonestr("{\"error\":\"out of sockets\"}"));
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else if ( nn_connect(pushsock,pushaddr) < 0 )
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{
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nn_close(pushsock);
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return(clonestr("{\"error\":\"cant connect\"}"));
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}
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else
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{
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char str[65]; printf("registered (%s) -> (%s)\n",bits256_str(str,pubkey),pushaddr);
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ptr = calloc(1,sizeof(*ptr));
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ptr->pubkey = pubkey;
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strcpy(ptr->pushaddr,pushaddr);
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ptr->pushsock = pushsock;
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ptr->lasttime = (uint32_t)time(NULL);
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portable_mutex_lock(&LP_forwardmutex);
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HASH_ADD_KEYPTR(hh,LP_forwardinfos,&ptr->pubkey,sizeof(ptr->pubkey),ptr);
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portable_mutex_unlock(&LP_forwardmutex);
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return(LP_lookup(pubkey));
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}
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}
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void LP_forwarding_register(bits256 pubkey,char *pushaddr,int32_t max)
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{
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char *retstr; cJSON *retjson; struct LP_peerinfo *peer,*tmp; int32_t n=0,retval = -1;
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if ( pushaddr == 0 || pushaddr[0] == 0 || bits256_nonz(pubkey) == 0 )
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{
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printf("LP_forwarding_register illegal pushaddr or null pubkey\n");
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return;
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}
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HASH_ITER(hh,LP_peerinfos,peer,tmp)
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{
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//printf("register with (%s)\n",peer->ipaddr);
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if ( (retstr= issue_LP_register(peer->ipaddr,peer->port,pubkey,pushaddr)) != 0 )
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{
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//printf("[%s] LP_register.(%s) returned.(%s)\n",pushaddr,peer->ipaddr,retstr);
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if ( (retjson= cJSON_Parse(retstr)) != 0 )
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{
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if ( jint(retjson,"registered") != 0 && ++n >= max )
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retval = 0;
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free_json(retjson);
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}
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free(retstr);
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} else printf("error registering with %s\n",peer->ipaddr);
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if ( retval == 0 )
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break;
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}
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}
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cJSON *LP_dereference(cJSON *argjson,char *excludemethod)
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{
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cJSON *reqjson = 0;
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if ( jstr(argjson,"method2") != 0 && strncmp(excludemethod,jstr(argjson,"method2"),strlen(excludemethod)) != 0 )
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{
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reqjson = jduplicate(argjson);
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jdelete(reqjson,"method");
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jaddstr(reqjson,"method",jstr(argjson,"method2"));
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}
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return(reqjson);
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}
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char *LP_forwardhex(int32_t pubsock,bits256 pubkey,char *hexstr)
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{
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struct LP_forwardinfo *ptr=0; uint8_t *data; int32_t datalen=0,sentbytes=0; char *retstr=0; cJSON *retjson,*argjson,*reqjson;
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if ( hexstr == 0 || hexstr[0] == 0 )
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return(clonestr("{\"error\":\"nohex\"}"));
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if ( bits256_nonz(pubkey) == 0 || bits256_cmp(pubkey,LP_mypubkey) == 0 )
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{
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datalen = (int32_t)strlen(hexstr) >> 1;
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data = malloc(datalen);
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decode_hex(data,datalen,hexstr);
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if ( (argjson= cJSON_Parse((char *)data)) != 0 )
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{
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reqjson = LP_dereference(argjson,"forward");
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retstr = LP_command_process(LP_mypeer != 0 ? LP_mypeer->ipaddr : "127.0.0.1",LP_mypubsock,reqjson,0,0,LP_profitratio - 1.);
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if ( pubsock >= 0 )
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LP_send(pubsock,jprint(reqjson,0),1);
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free_json(reqjson);
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free_json(argjson);
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}
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return(retstr);
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}
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else if ( (ptr= LP_forwardfind(pubkey)) != 0 )
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{
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if ( ptr->pushsock >= 0 )
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{
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datalen = (int32_t)strlen(hexstr) >> 1;
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data = malloc(datalen);
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decode_hex(data,datalen,hexstr);
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//printf("forwardhex.(%s)\n",(char *)data);
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sentbytes = LP_send(ptr->pushsock,(char *)data,1);
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}
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retjson = cJSON_CreateObject();
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if ( sentbytes == datalen )
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{
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jaddstr(retjson,"result","success");
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jaddnum(retjson,"forwarded",sentbytes);
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return(jprint(retjson,1));
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}
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else
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{
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jaddstr(retjson,"error","send error");
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jaddnum(retjson,"sentbytes",sentbytes);
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jaddnum(retjson,"datalen",datalen);
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return(jprint(retjson,1));
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}
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} else return(clonestr("{\"error\":\"notfound\"}"));
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printf("couldnt find pubkey\n");
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}
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int32_t LP_forward(bits256 pubkey,char *jsonstr,int32_t freeflag)
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{
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struct LP_forwardinfo *ptr; struct LP_peerinfo *peer,*tmp; char *hexstr,*retstr; int32_t len,retval = -1; cJSON *retjson,*reqjson;
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if ( jsonstr == 0 || jsonstr[0] == 0 )
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return(-1);
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if ( bits256_nonz(pubkey) != 0 )
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{
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if ( IAMLP != 0 && (ptr= LP_forwardfind(pubkey)) != 0 && ptr->pushsock >= 0 && ptr->lasttime > time(NULL)-LP_KEEPALIVE )
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{
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return(LP_send(ptr->pushsock,jsonstr,1));
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}
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}
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HASH_ITER(hh,LP_peerinfos,peer,tmp)
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{
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if ( bits256_nonz(pubkey) != 0 )
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{
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if ( (retstr= issue_LP_lookup(peer->ipaddr,peer->port,pubkey)) != 0 )
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{
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if ( (retjson= cJSON_Parse(retstr)) != 0 )
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{
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if ( jint(retjson,"forwarding") != 0 && peer->pushsock >= 0 )
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retval = 0;
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free_json(retjson);
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}
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free(retstr);
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}
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} else retval = 0;
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if ( retval == 0 && peer->pushsock >= 0 )
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{
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printf("found LPnode.(%s) forward.(%s)\n",peer->ipaddr,jsonstr);
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len = (int32_t)strlen(jsonstr) + 1;
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hexstr = malloc(len*2 + 1);
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init_hexbytes_noT(hexstr,(uint8_t *)jsonstr,len);
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if ( freeflag != 0 )
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free(jsonstr);
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reqjson = cJSON_CreateObject();
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jaddstr(reqjson,"method","forwardhex");
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jaddstr(reqjson,"hex",hexstr);
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jaddbits256(reqjson,"pubkey",pubkey);
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free(hexstr);
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return(LP_send(peer->pushsock,jprint(reqjson,1),1));
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} else retval = -1;
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}
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return(-1);
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}
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char *LP_broadcasted(cJSON *argjson)
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{
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printf("RECV BROADCAST.(%s)\n",jprint(argjson,0));
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return(clonestr("{\"result\":\"need to update broadcast messages\"}"));
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}
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