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/******************************************************************************
* Copyright © 2014-2017 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. *
* *
******************************************************************************/
#define EXCHANGE_NAME "fxcm"
#define UPDATE fxcm ## _price
#define SUPPORTS fxcm ## _supports
#define SIGNPOST fxcm ## _signpost
#define TRADE fxcm ## _trade
#define ORDERSTATUS fxcm ## _orderstatus
#define CANCELORDER fxcm ## _cancelorder
#define OPENORDERS fxcm ## _openorders
#define TRADEHISTORY fxcm ## _tradehistory
#define BALANCES fxcm ## _balances
#define PARSEBALANCE fxcm ## _parsebalance
#define WITHDRAW fxcm ## _withdraw
#define CHECKBALANCE fxcm ## _checkbalance
#define ALLPAIRS fxcm ## _allpairs
#define FUNCS fxcm ## _funcs
#define BASERELS fxcm ## _baserels
static char **FXCM_contracts; static int num_FXCM;
char *fxcm_xmlstr()
{
char *xmlstr; int32_t i,j,k;
if ( (xmlstr= issue_curl("http://rates.fxcm.com/RatesXML")) != 0 )
{
_stripwhite(xmlstr,0);
//printf("(%s)\n",xmlstr);
i = 0;
if ( strncmp("<?xml",xmlstr,5) == 0 )
for (; xmlstr[i]!='>'&&xmlstr[i]!=0; i++)
;
if ( xmlstr[i] == '>' )
i++;
for (j=0; xmlstr[i]!=0; i++)
{
if ( strncmp("<Rates>",&xmlstr[i],strlen("<Rates>")) == 0 )
xmlstr[j++] = '[', i += strlen("<Rates>")-1;
else if ( strncmp("<RateSymbol=",&xmlstr[i],strlen("<RateSymbol=")) == 0 )
{
if ( j > 1 )
xmlstr[j++] = ',';
memcpy(&xmlstr[j],"{\"Symbol\":",strlen("{\"Symbol\":")), i += strlen("<RateSymbol=")-1, j += strlen("{\"Symbol\":");
}
else
{
char *strpairs[][2] = { { "<Bid>", "\"Bid\":" }, { "<Ask>", "\"Ask\":" }, { "<High>", "\"High\":" }, { "<Low>", "\"Low\":" }, { "<Direction>", "\"Direction\":" }, { "<Last>", "\"Last\":\"" } };
for (k=0; k<sizeof(strpairs)/sizeof(*strpairs); k++)
if ( strncmp(strpairs[k][0],&xmlstr[i],strlen(strpairs[k][0])) == 0 )
{
memcpy(&xmlstr[j],strpairs[k][1],strlen(strpairs[k][1]));
i += strlen(strpairs[k][0])-1;
j += strlen(strpairs[k][1]);
break;
}
if ( k == sizeof(strpairs)/sizeof(*strpairs) )
{
char *ends[] = { "</Bid>", "</Ask>", "</High>", "</Low>", "</Direction>", "</Last>", "</Rate>", "</Rates>", ">" };
for (k=0; k<sizeof(ends)/sizeof(*ends); k++)
if ( strncmp(ends[k],&xmlstr[i],strlen(ends[k])) == 0 )
{
i += strlen(ends[k])-1;
if ( strcmp("</Rate>",ends[k]) == 0 )
xmlstr[j++] = '}';
else if ( strcmp("</Rates>",ends[k]) == 0 )
xmlstr[j++] = ']';
else if ( strcmp("</Last>",ends[k]) == 0 )
xmlstr[j++] = '\"';
else xmlstr[j++] = ',';
break;
}
if ( k == sizeof(ends)/sizeof(*ends) )
xmlstr[j++] = xmlstr[i];
}
}
}
xmlstr[j] = 0;
}
return(xmlstr);
}
int32_t fxcm_setcontracts()
{
int32_t i,n,flag,num = 0; cJSON *json,*obj; char name[32],*str,*xmlstr = fxcm_xmlstr();
if ( xmlstr != 0 )
{
if ( (json= cJSON_Parse(xmlstr)) != 0 )
{
/*<Rate Symbol="USDJPY">
<Bid>123.763</Bid>
<Ask>123.786</Ask>
<High>123.956</High>
<Low>123.562</Low>
<Direction>-1</Direction>
<Last>08:49:15</Last>*/
//printf("Parsed stupid XML! (%s)\n",xmlstr);
if ( is_cJSON_Array(json) != 0 && (n= cJSON_GetArraySize(json)) != 0 )
{
if ( FXCM_contracts != 0 )
{
for (i=0; i<num_FXCM; i++)
{
if ( FXCM_contracts[i] == 0 )
break;
free(FXCM_contracts[i]);
}
free(FXCM_contracts);
}
FXCM_contracts = calloc(n+1,sizeof(*FXCM_contracts));
for (i=0; i<n; i++)
{
obj = jitem(json,i);
flag = 0;
if ( (str= jstr(obj,"Symbol")) != 0 && strlen(str) < 15 )
{
strcpy(name,str);
touppercase(name);
if ( strcmp(name,"USDCNH") == 0 )
strcpy(name,"USDCNY");
FXCM_contracts[num++] = clonestr(name);
printf("FXCM[%d] = %s\n",num-1,name);
}
}
}
}
free(xmlstr);
}
return(num);
}
int32_t fxcm_ensure()
{
if ( num_FXCM == 0 || FXCM_contracts == 0 )
num_FXCM = fxcm_setcontracts();
if ( FXCM_contracts == 0 )
return(-1);
else return(0);
}
char *ALLPAIRS(struct exchange_info *exchange,cJSON *argjson)
{
int32_t i,c,n; char base[32],rel[32]; cJSON *json,*item,*array = cJSON_CreateArray();
if ( fxcm_ensure() == 0 )
{
for (i=0; i<num_FXCM; i++)
{
if ( strcmp("COPPER",FXCM_contracts[i]) != 0 && (n= (int32_t)strlen(FXCM_contracts[i])) == 6 && ((c= FXCM_contracts[i][n-1]) < '0' || c > '9') )
{
strcpy(base,FXCM_contracts[i]);
strcpy(rel,FXCM_contracts[i] + 3);
base[3] = rel[3] = 0;
touppercase(base), touppercase(rel);
}
else if ( strcmp(FXCM_contracts[i],"USDOLLAR") == 0 || strcmp(FXCM_contracts[i],"BUND") == 0 || ((c= FXCM_contracts[i][n-1]) >= '0' && c <= '9') )
{
strcpy(base,FXCM_contracts[i]), touppercase(base);
rel[0] = 0;
}
else
{
strcpy(base,FXCM_contracts[i]), touppercase(base);
strcpy(rel,"USD");
}
item = cJSON_CreateArray();
jaddistr(item,base);
jaddistr(item,rel);
jaddi(array,item);
}
json = cJSON_CreateObject();
jadd(json,"result",array);
return(jprint(json,1));
} else return(clonestr("{\"error\":\"cant find FXCM contracts\"}"));
}
int32_t SUPPORTS(struct exchange_info *exchange,char *_base,char *_rel,cJSON *argjson)
{
int32_t i; char contract[32],revcontract[32],base[32],rel[32];
if ( fxcm_ensure() == 0 && num_FXCM > 0 && FXCM_contracts != 0 )
{
strcpy(base,_base), strcpy(rel,_rel);
touppercase(base), touppercase(rel);
sprintf(contract,"%s%s",base,rel), touppercase(contract);
sprintf(revcontract,"%s%s",rel,base), touppercase(revcontract);
for (i=0; i<num_FXCM; i++)
{
if ( strcmp(contract,FXCM_contracts[i]) == 0 )
return(1);
else if ( strcmp(revcontract,FXCM_contracts[i]) == 0 )
return(-1);
}
}
return(0);
}
void prices777_fxcm(double bids[64],double asks[64],double highs[64],double lows[64])
{
char name[64],*str,*xmlstr; cJSON *json,*obj; int32_t i,c,flag,n = 0; double bid,ask,high,low; struct destbuf numstr;
memset(bids,0,sizeof(*bids) * 64), memset(asks,0,sizeof(*asks) * 64);
memset(highs,0,sizeof(*highs) * 64), memset(lows,0,sizeof(*lows) * 64);
if ( fxcm_ensure() < 0 )
return;
if ( (xmlstr= fxcm_xmlstr()) != 0 )
{
if ( (json= cJSON_Parse(xmlstr)) != 0 )
{
if ( is_cJSON_Array(json) != 0 && (n= cJSON_GetArraySize(json)) != 0 )
{
for (i=0; i<n; i++)
{
obj = jitem(json,i);
flag = 0;
c = -1;
if ( (str= jstr(obj,"Symbol")) != 0 && strlen(str) < 15 )
{
strcpy(name,str);
if ( strcmp(name,"USDCNH") == 0 )
strcpy(name,"USDCNY");
copy_cJSON(&numstr,jobj(obj,"Bid")), bid = atof(numstr.buf);
copy_cJSON(&numstr,jobj(obj,"Ask")), ask = atof(numstr.buf);
copy_cJSON(&numstr,jobj(obj,"High")), high = atof(numstr.buf);
copy_cJSON(&numstr,jobj(obj,"Low")), low = atof(numstr.buf);
if ( (c= strsearch(FXCM_contracts,num_FXCM,name)) >= 0 )
{
bids[c] = bid, asks[c] = ask, highs[c] = high, lows[c] = low;
//printf("c.%d (%s) %f %f\n",c,name,bid,ask);
dpow_price("fxcm",name,bid,ask);
flag = 1;
} else printf("cant find.%s\n",name);//, getchar();
}
if ( flag == 0 )
printf("FXCM: Error finding.(%s) c.%d (%s)\n",name,c,cJSON_Print(obj));
}
}
free_json(json);
} else printf("couldnt parse.(%s)\n",xmlstr);
free(xmlstr);
}
}
double UPDATE(struct exchange_info *exchange,char *base,char *rel,struct exchange_quote *bidasks,int32_t maxdepth,double commission,cJSON *argjson,int32_t invert)
{
double bid,ask,bids[64],asks[64],highs[64],lows[64]; int32_t numbids,numasks,c; char name[32];
if ( fxcm_ensure() == 0 )
{
strcpy(name,base), strcat(name,rel), touppercase(name);
if ( (c= strsearch(FXCM_contracts,num_FXCM,name)) >= 0 )
{
prices777_fxcm(bids,asks,highs,lows);
numbids = numasks = 0;
bid = exchange_setquote(bidasks,&numbids,&numasks,0,invert,bids[c],1,commission,0,(uint32_t)time(NULL),0);
ask = exchange_setquote(bidasks,&numbids,&numasks,1,invert,asks[c],1,commission,0,(uint32_t)time(NULL),0);
if ( bid > SMALLVAL && ask > SMALLVAL )
{
//printf("%d.{%.6f %.6f}.%s ",c,bid,ask,name);
return((bid + ask) * .5);
}
}
}
return(0);
}
cJSON *SIGNPOST(void **cHandlep,int32_t dotrade,char **retstrp,struct exchange_info *exchange,char *payload,char *path)
{
if ( retstrp != 0 )
*retstrp = clonestr("{\"error\":\"fxcm is readonly data source\"}");
return(cJSON_Parse("{}"));
}
char *PARSEBALANCE(struct exchange_info *exchange,double *balancep,char *coinstr,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
cJSON *BALANCES(struct exchange_info *exchange,cJSON *argjson)
{
return(cJSON_Parse("{\"error\":\"fxcm is readonly data source\"}"));
}
uint64_t TRADE(int32_t dotrade,char **retstrp,struct exchange_info *exchange,char *base,char *rel,int32_t dir,double price,double volume,cJSON *argjson)
{
return(0);
}
char *ORDERSTATUS(struct exchange_info *exchange,uint64_t quoteid,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
char *CANCELORDER(struct exchange_info *exchange,uint64_t quoteid,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
char *OPENORDERS(struct exchange_info *exchange,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
char *TRADEHISTORY(struct exchange_info *exchange,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
char *WITHDRAW(struct exchange_info *exchange,char *base,double amount,char *destaddr,cJSON *argjson)
{
return(clonestr("{\"error\":\"fxcm is readonly data source\"}"));
}
struct exchange_funcs fxcm_funcs = EXCHANGE_FUNCS(fxcm,EXCHANGE_NAME);
#include "exchange_undefs.h"