src/komodo_gateway.h

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  15
  16 // convert paxdeposit into new coins in the next block
  17 // paxdeposit equivalent in reverse makes opreturn and KMD does the same in reverse
  18 // need to save most processed block in other chain(s)
  19
  20 const char *komodo_opreturn(int32_t height,uint64_t value,uint8_t *opretbuf,int32_t opretlen)
  21 {
  22     uint8_t rmd160[20],addrtype,shortflag,pubkey33[33]; int32_t i; char base[4],coinaddr[64],destaddr[64]; int64_t fiatoshis,checktoshis; const char *typestr = "unknown";
  23     if ( opretlen == 72 )
  24         return("notarized");
  25     printf("komodo_opreturn[%c]: ht.%d %.8f opretlen.%d\n",opretbuf[0],height,dstr(value),opretlen);
  26     if ( opretbuf[0] == 'D' )
  27     {
  28         if ( opretlen == 34 )
  29         {
  30             PAX_pubkey(0,&opretbuf[1],&addrtype,rmd160,base,&shortflag,&fiatoshis);
  31             if ( fiatoshis < 0 )
  32                 fiatoshis = -fiatoshis;
  33             bitcoin_address(coinaddr,addrtype,rmd160,20);
  34             checktoshis = PAX_fiatdest(destaddr,pubkey33,coinaddr,height,base,fiatoshis);
  35             printf("DEPOSIT %.8f %c%s -> %s\n",dstr(fiatoshis),shortflag!=0?'-':'+',base,coinaddr);
  36             // verify price value for fiatoshis of base
  37             for (i=0; i<33; i++)
  38                 printf("%02x",pubkey33[i]);
  39             printf(" checkpubkey check %.8f v %.8f dest.(%s)\n",dstr(checktoshis),dstr(value),destaddr);
  40             typestr = "deposit";
  41         }
  42     }
  43     return(typestr);
  44 }
  45
  46 void komodo_gateway_voutupdate(char *symbol,int32_t isspecial,int32_t height,int32_t txi,int32_t vout,int32_t numvouts,uint64_t value,uint8_t *script,int32_t len)
  47 {
  48     int32_t i,opretlen,offset = 0; uint256 zero; const char *typestr;
  49     typestr = "unknown";
  50     if ( script[offset++] == 0x6a )
  51     {
  52         offset += komodo_scriptitemlen(&opretlen,&script[offset]);
  53         if ( isspecial != 0 && len >= offset+32*2+4 && strcmp((char *)&script[offset+32*2+4],"KMD") == 0 )
  54             typestr = "notarized";
  55         else if ( txi == 0 && (script[offset] == 'P' || opretlen == 149) )
  56         {
  57             typestr = "pricefeed";
  58             komodo_paxpricefeed(height,&scriptbuf[len + scriptboffset] == 'P'],opretlen);
  59             printf("height.%d pricefeed len.%d\n",height,opretlen);
  60         }
  61         else if ( isspecial != 0 )
  62         {
  63             komodo_stateupdate(0,0,0,0,zero,0,0,0,0,0,value,&script[offset],opretlen);
  64             for (i=0; i<len; i++)
  65                 printf("%02x",script[i]);
  66             printf(" <- %s VOUTUPDATE.%d txi.%d vout.%d %.8f scriptlen.%d OP_RETURN.%d (%s)\n",symbol,height,txi,vout,dstr(value),len,script[0] == 0x6a,typestr);
  67         }
  68     }
  69     else if ( numvouts > 13 )
  70         typestr = "ratify";
  71 }
  72
  73 int32_t komodo_gateway_tx(char *symbol,int32_t height,int32_t txi,char *txidstr,uint32_t port)
  74 {
  75     char *retstr,params[256],*hexstr; uint8_t script[10000]; cJSON *json,*result,*vouts,*item,*sobj; int32_t vout,n,len,isspecial,retval = -1; uint64_t value;
  76     sprintf(params,"[\"%s\", 1]",txidstr);
  77     if ( (retstr= komodo_issuemethod((char *)"getrawtransaction",params,port)) != 0 )
  78     {
  79         if ( (json= cJSON_Parse(retstr)) != 0 )
  80         {
  81             if ( (result= jobj(json,(char *)"result")) != 0 && (vouts= jarray(&n,result,(char *)"vout")) != 0 )
  82             {
  83                 retval = 0;
  84                 isspecial = 0;
  85                 for (vout=0; vout<n; vout++)
  86                 {
  87                     item = jitem(vouts,vout);
  88                     value = SATOSHIDEN * jdouble(item,(char *)"value");
  89                     if ( (sobj= jobj(item,(char *)"scriptPubKey")) != 0 )
  90                     {
  91                         if ( (hexstr= jstr(sobj,(char *)"hex")) != 0 )
  92                         {
  93                             len = (int32_t)strlen(hexstr) >> 1;
  94                             if ( len != 74 )
  95                                 printf("ht.%d txi.%d vout.%d/%d %s script (%d %d)\n",height,txi,vout,n,hexstr,memcmp(&hexstr[2],CRYPTO777_PUBSECPSTR,66),memcmp(&hexstr[6],CRYPTO777_RMD160STR,40));
  96                             if ( vout == 0 && ((memcmp(&hexstr[2],CRYPTO777_PUBSECPSTR,66) == 0 && len == 35) || (memcmp(&hexstr[6],CRYPTO777_RMD160STR,40) == 0 && len == 25)) )
  97                                 isspecial = 1;
  98                             else if ( len <= sizeof(script) )
  99                             {
 100                                 decode_hex(script,len,hexstr);
 101                                 komodo_gateway_voutupdate(symbol,isspecial,height,txi,vout,n,value,script,len);
 102                             }
 103                         }
 104                     }
 105                 }
 106             }
 107             free_json(json);
 108         }
 109         free(retstr);
 110     }
 111     return(retval);
 112 }
 113
 114 int32_t komodo_gateway_block(char *symbol,int32_t height,uint16_t port)
 115 {
 116     char *retstr,*retstr2,params[128],*txidstr; int32_t i,n,retval = -1; cJSON *json,*tx,*result,*result2;
 117     sprintf(params,"[%d]",height);
 118     if ( (retstr= komodo_issuemethod((char *)"getblockhash",params,port)) != 0 )
 119     {
 120         if ( (result= cJSON_Parse(retstr)) != 0 )
 121         {
 122             if ( (txidstr= jstr(result,(char *)"result")) != 0 && strlen(txidstr) == 64 )
 123             {
 124                 sprintf(params,"[\"%s\"]",txidstr);
 125                 if ( (retstr2= komodo_issuemethod((char *)"getblock",params,port)) != 0 )
 126                 {
 127                     //printf("getblock.(%s)\n",retstr2);
 128                     if ( (json= cJSON_Parse(retstr2)) != 0 )
 129                     {
 130                         if ( (result2= jobj(json,(char *)"result")) != 0 && (tx= jarray(&n,result2,(char *)"tx")) != 0 )
 131                         {
 132                             for (i=0; i<n; i++)
 133                                 if ( komodo_gateway_tx(symbol,height,i,jstri(tx,i),port) < 0 )
 134                                     break;
 135                             if ( i == n )
 136                                 retval = 0;
 137                             else printf("error i.%d vs n.%d\n",i,n);
 138                         }
 139                         free_json(json);
 140                     }
 141                     free(retstr2);
 142                 }
 143             } else printf("strlen.%ld (%s)\n",strlen(txidstr),txidstr);
 144             free_json(result);
 145         }
 146         free(retstr);
 147     }
 148     return(retval);
 149 }
 150
 151 void komodo_gateway_iteration(char *symbol)
 152 {
 153     char *retstr; int32_t i,kmdheight; cJSON *infoobj,*result; uint256 zero; uint16_t port = 7771;
 154     if ( KMDHEIGHT <= 0 )
 155         KMDHEIGHT = 1;
 156     if ( (retstr= komodo_issuemethod((char *)"getinfo",0,port)) != 0 )
 157     {
 158         if ( (infoobj= cJSON_Parse(retstr)) != 0 )
 159         {
 160             if ( (result= jobj(infoobj,(char *)"result")) != 0 && (kmdheight= jint(result,(char *)"blocks")) != 0 )
 161             {
 162                 for (i=0; i<1000 && KMDHEIGHT<kmdheight; i++,KMDHEIGHT++)
 163                 {
 164                     if ( (KMDHEIGHT % 100) == 0 )
 165                     {
 166                         fprintf(stderr,"%s.%d ",symbol,KMDHEIGHT);
 167                         memset(&zero,0,sizeof(zero));
 168                         komodo_stateupdate(0,0,0,0,zero,0,0,0,0,KMDHEIGHT,0,0,0);
 169                     }
 170                     if ( komodo_gateway_block(symbol,KMDHEIGHT,port) < 0 )
 171                         break;
 172                     usleep(10000);
 173                 }
 174             }
 175             free_json(infoobj);
 176         }
 177         free(retstr);
 178     }
 179     else
 180     {
 181         //printf("error from %s\n",symbol);
 182         sleep(30);
 183     }
 184 }
 185
 186 #ifdef KOMODO_ISSUER
 187 void komodo_gateway_issuer() // from "assetchain" connectblock()
 188 {
 189     // check for redeems
 190 }
 191 #else
 192
 193 void komodo_gateway_redeemer() // from "KMD" connectblock()
 194 {
 195
 196 }
 197 #endif