SuperNET/gecko/gecko_headers.c

/******************************************************************************
 * Copyright © 2014-2016 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.            *
 *                                                                            *
 ******************************************************************************/

// included from gecko.c

int32_t basilisk_respond_geckogetheaders(struct supernet_info *myinfo,struct iguana_info *virt,uint8_t *serialized,int32_t maxsize,cJSON *valsobj,bits256 hash2)
{
    int32_t i,n,num,height,len=0; struct iguana_block *block;
    if ( (block= iguana_blockfind("geckohdr",virt,hash2)) != 0 )
    {
        if ( (height= block->height) >= 0 )
        {
            if ( (num= juint(valsobj,"num")) == 0 || num > virt->chain->bundlesize )
                num = virt->chain->bundlesize;
            for (i=0; i<num; i++)
            {
                if ( block != 0 )
                {
                    if ( (n= iguana_headerget(virt,&serialized[len],maxsize-len,block)) > 0 )
                        len += n;
                }
                hash2 = iguana_blockhash(virt,height+i+1);
                block = iguana_blockfind("geckohdri",virt,hash2);
            }
            return(len);
        }
    }
    return(-1);
}

void gecko_blockhashupdate(struct iguana_info *virt,bits256 hash2,int32_t height)
{
    int32_t bundlei; struct iguana_bundle *bp; bits256 zero;
    char str[65]; printf("gecko_blockhashupdate height.%d %s\n",height,bits256_str(str,hash2));
    memset(zero.bytes,0,sizeof(zero));
    if ( (height % virt->chain->bundlesize) == 0 )
        bp = iguana_bundlecreate(virt,&bundlei,height,hash2,zero,0);
    else if ( (bp= virt->bundles[height / virt->chain->bundlesize]) != 0 )
        iguana_bundlehash2add(virt,0,bp,height % virt->chain->bundlesize,hash2);
}

char *gecko_headersarrived(struct supernet_info *myinfo,struct iguana_info *virt,char *remoteaddr,uint8_t *data,int32_t datalen,bits256 firsthash2)
{
    bits256 hash2,prevhash2; struct iguana_block *block; int32_t height,firstheight,i,len=0,n,num; struct iguana_msgblock msgB; char str[65],str2[65];
    num = (int32_t)(datalen / 84);
    printf("headers.%s arrived.%d from %s\n",virt->symbol,num,bits256_str(str,firsthash2));
    if ( (block= iguana_blockfind("geckohdrs",virt,firsthash2)) != 0 && (firstheight= block->height) >= 0 )
    {
        gecko_blockhashupdate(virt,firsthash2,firstheight);
        prevhash2 = firsthash2;
        for (i=0; i<num; i++)
        {
            if ( (n= iguana_rwblock(virt->symbol,virt->chain->zcash,virt->chain->auxpow,virt->chain->hashalgo,0,&hash2,&data[len],&msgB,datalen-len)) > 0 )
            {
                if ( bits256_cmp(msgB.H.prev_block,prevhash2) == 0 )
                {
                    height = (firstheight + i + 1);
                    gecko_blockhashupdate(virt,hash2,height);
                    printf("ht.%d %s %08x t.%u\n",height,bits256_str(str,hash2),msgB.H.bits,msgB.H.timestamp);
                } else printf("ht.%d non prevhash i.%d %s %s\n",height,i,bits256_str(str,prevhash2),bits256_str(str2,msgB.H.prev_block));
                len += n;
                prevhash2 = hash2;
            }
        }
        return(clonestr("{\"result\":\"gecko headers processed\"}"));
    } else return(clonestr("{\"error\":\"gecko headers couldnt find firsthash2\"}"));
}

char *basilisk_respond_geckoheaders(struct supernet_info *myinfo,char *CMD,void *addr,char *remoteaddr,uint32_t basilisktag,cJSON *valsobj,uint8_t *data,int32_t datalen,bits256 hash2,int32_t from_basilisk)
{
    char *symbol; struct iguana_info *virt;
    printf("respond to incoming headers datalen.%d\n",datalen);
    if ( (symbol= jstr(valsobj,"symbol")) != 0 && (virt= iguana_coinfind(symbol)) != 0 )
        return(gecko_headersarrived(myinfo,virt,addr,data,datalen,hash2));
    else return(clonestr("{\"error\":\"couldt find gecko chain\"}"));
}

void gecko_requesthdrs(struct supernet_info *myinfo,struct iguana_info *virt,int32_t hdrsi)
{
    bits256 zero; struct iguana_bundle *bp=0; cJSON *vals; char *retstr;
    if ( (bp= virt->bundles[hdrsi]) != 0 )
    {
        vals = cJSON_CreateObject();
        memset(zero.bytes,0,sizeof(zero));
        jaddstr(vals,"symbol",virt->symbol);
        jaddstr(vals,"type","HDR");
        if ( (retstr= basilisk_standardservice("GET",myinfo,bp->hashes[0],vals,0,1)) != 0 )
            free(retstr);
        free_json(vals);
    } else printf("dont have bundle needed\n");
}