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372 lines
14 KiB
372 lines
14 KiB
/******************************************************************************
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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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#include "OS_portable.h"
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#define LIQUIDITY_PROVIDER 1
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#if LIQUIDITY_PROVIDER
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#include <curl/curl.h>
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#include <curl/easy.h>
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// return data from the server
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#define CURL_GLOBAL_ALL (CURL_GLOBAL_SSL|CURL_GLOBAL_WIN32)
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#define CURL_GLOBAL_SSL (1<<0)
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#define CURL_GLOBAL_WIN32 (1<<1)
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struct return_string {
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char *ptr;
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size_t len;
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};
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size_t accumulate(void *ptr, size_t size, size_t nmemb, struct return_string *s);
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void init_string(struct return_string *s);
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/************************************************************************
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*
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* return the current system time in milliseconds
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*
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************************************************************************/
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#define EXTRACT_BITCOIND_RESULT // if defined, ensures error is null and returns the "result" field
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#ifdef EXTRACT_BITCOIND_RESULT
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/************************************************************************
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*
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* perform post processing of the results
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*
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************************************************************************/
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char *post_process_bitcoind_RPC(char *debugstr,char *command,char *rpcstr,char *params)
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{
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long i,j,len;
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char *retstr = 0;
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cJSON *json,*result,*error;
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//printf("<<<<<<<<<<< bitcoind_RPC: %s post_process_bitcoind_RPC.%s.[%s]\n",debugstr,command,rpcstr);
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if ( command == 0 || rpcstr == 0 || rpcstr[0] == 0 )
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{
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if ( strcmp(command,"signrawtransaction") != 0 && strcmp(command,"getrawtransaction") != 0 )
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printf("<<<<<<<<<<< bitcoind_RPC: %s post_process_bitcoind_RPC.%s.[%s]\n",debugstr,command,rpcstr);
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return(rpcstr);
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}
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json = cJSON_Parse(rpcstr);
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if ( json == 0 )
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{
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printf("<<<<<<<<<<< bitcoind_RPC: %s post_process_bitcoind_RPC.%s can't parse.(%s) params.(%s)\n",debugstr,command,rpcstr,params);
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free(rpcstr);
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return(0);
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}
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result = cJSON_GetObjectItem(json,"result");
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error = cJSON_GetObjectItem(json,"error");
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if ( error != 0 && result != 0 )
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{
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if ( (error->type&0xff) == cJSON_NULL && (result->type&0xff) != cJSON_NULL )
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{
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retstr = cJSON_Print(result);
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len = strlen(retstr);
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if ( retstr[0] == '"' && retstr[len-1] == '"' )
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{
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for (i=1,j=0; i<len-1; i++,j++)
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retstr[j] = retstr[i];
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retstr[j] = 0;
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}
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}
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else if ( (error->type&0xff) != cJSON_NULL || (result->type&0xff) != cJSON_NULL )
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{
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if ( strcmp(command,"getrawtransaction") != 0 && strcmp(command,"signrawtransaction") != 0 && strcmp(command,"sendrawtransaction") != 0 )
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printf("<<<<<<<<<<< bitcoind_RPC: %s post_process_bitcoind_RPC (%s) error.%s\n",debugstr,command,rpcstr);
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retstr = rpcstr;
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rpcstr = 0;
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}
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if ( rpcstr != 0 )
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free(rpcstr);
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} else retstr = rpcstr;
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free_json(json);
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//fprintf(stderr,"<<<<<<<<<<< bitcoind_RPC: postprocess returns.(%s)\n",retstr);
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return(retstr);
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}
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#endif
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/************************************************************************
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*
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* perform the query
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*
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************************************************************************/
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static int32_t USE_JAY;
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char *Jay_NXTrequest(char *command,char *params)
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{
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char *retstr = 0;
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// issue JS Jay request
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// wait till it is done
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return(retstr);
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}
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char *bitcoind_RPC(char **retstrp,char *debugstr,char *url,char *userpass,char *command,char *params)
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{
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static int didinit,count,count2; static double elapsedsum,elapsedsum2; extern int32_t USE_JAY;
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struct curl_slist *headers = NULL; struct return_string s; CURLcode res; CURL *curl_handle;
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char *bracket0,*bracket1,*databuf = 0; long len; int32_t specialcase,numretries; double starttime;
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if ( didinit == 0 )
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{
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didinit = 1;
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curl_global_init(CURL_GLOBAL_ALL); //init the curl session
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}
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if ( (0) && (USE_JAY != 0 && (strncmp(url,"http://127.0.0.1:7876/nxt",strlen("http://127.0.0.1:7876/nxt")) == 0 || strncmp(url,"https://127.0.0.1:7876/nxt",strlen("https://127.0.0.1:7876/nxt")) == 0)) )
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{
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if ( (databuf= Jay_NXTrequest(command,params)) != 0 )
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return(databuf);
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}
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numretries = 0;
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if ( debugstr != 0 && strcmp(debugstr,"BTCD") == 0 && command != 0 && strcmp(command,"SuperNET") == 0 )
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specialcase = 1;
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else specialcase = 0;
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if ( url[0] == 0 )
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strcpy(url,"http://127.0.0.1:7776");
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if ( specialcase != 0 && (0) )
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printf("<<<<<<<<<<< bitcoind_RPC: debug.(%s) url.(%s) command.(%s) params.(%s)\n",debugstr,url,command,params);
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try_again:
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if ( retstrp != 0 )
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*retstrp = 0;
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starttime = OS_milliseconds();
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curl_handle = curl_easy_init();
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init_string(&s);
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headers = curl_slist_append(0,"Expect:");
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curl_easy_setopt(curl_handle,CURLOPT_USERAGENT,"mozilla/4.0");//"Mozilla/4.0 (compatible; )");
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curl_easy_setopt(curl_handle,CURLOPT_HTTPHEADER, headers);
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curl_easy_setopt(curl_handle,CURLOPT_URL, url);
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curl_easy_setopt(curl_handle,CURLOPT_WRITEFUNCTION, (void *)accumulate); // send all data to this function
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curl_easy_setopt(curl_handle,CURLOPT_WRITEDATA, &s); // we pass our 's' struct to the callback
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curl_easy_setopt(curl_handle,CURLOPT_NOSIGNAL, 1L); // supposed to fix "Alarm clock" and long jump crash
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curl_easy_setopt(curl_handle,CURLOPT_NOPROGRESS, 1L); // no progress callback
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//curl_easy_setopt(curl_handle,CURLOPT_TIMEOUT, 60L); // causes problems with iguana timeouts
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if ( strncmp(url,"https",5) == 0 )
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{
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curl_easy_setopt(curl_handle,CURLOPT_SSL_VERIFYPEER,0);
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curl_easy_setopt(curl_handle,CURLOPT_SSL_VERIFYHOST,0);
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}
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if ( userpass != 0 )
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curl_easy_setopt(curl_handle,CURLOPT_USERPWD, userpass);
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databuf = 0;
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if ( params != 0 )
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{
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if ( command != 0 && specialcase == 0 )
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{
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len = strlen(params);
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if ( len > 0 && params[0] == '[' && params[len-1] == ']' ) {
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bracket0 = bracket1 = (char *)"";
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}
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else
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{
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bracket0 = (char *)"[";
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bracket1 = (char *)"]";
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}
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char agentstr[64];
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databuf = (char *)malloc(256 + strlen(command) + strlen(params));
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if ( debugstr[0] != 0 )
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sprintf(agentstr,"\"agent\":\"%s\",",debugstr);
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else agentstr[0] = 0;
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sprintf(databuf,"{\"id\":\"jl777\",%s\"method\":\"%s\",\"params\":%s%s%s}",agentstr,command,bracket0,params,bracket1);
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//printf("url.(%s) userpass.(%s) databuf.(%s)\n",url,userpass,databuf);
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//
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} //else if ( specialcase != 0 ) fprintf(stderr,"databuf.(%s)\n",params);
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curl_easy_setopt(curl_handle,CURLOPT_POST,1L);
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if ( databuf != 0 )
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curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS,databuf);
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else curl_easy_setopt(curl_handle,CURLOPT_POSTFIELDS,params);
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}
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//laststart = milliseconds();
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res = curl_easy_perform(curl_handle);
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curl_slist_free_all(headers);
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curl_easy_cleanup(curl_handle);
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if ( databuf != 0 ) // clean up temporary buffer
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{
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free(databuf);
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databuf = 0;
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}
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if ( res != CURLE_OK )
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{
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numretries++;
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if ( specialcase != 0 )
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{
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printf("<<<<<<<<<<< bitcoind_RPC.(%s): BTCD.%s timeout params.(%s) s.ptr.(%s) err.%d\n",url,command,params,s.ptr,res);
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free(s.ptr);
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return(0);
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}
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else if ( numretries >= 4 )
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{
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printf( "curl_easy_perform() failed: %s %s.(%s %s), retries: %d\n",curl_easy_strerror(res),debugstr,url,command,numretries);
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//printf("Maximum number of retries exceeded!\n");
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free(s.ptr);
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return(0);
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}
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free(s.ptr);
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sleep((1<<numretries));
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goto try_again;
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}
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else
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{
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if ( command != 0 && specialcase == 0 )
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{
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count++;
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elapsedsum += (OS_milliseconds() - starttime);
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if ( (count % 10000) == 0)
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printf("%d: ave %9.6f | elapsed %.3f millis | bitcoind_RPC.(%s) url.(%s)\n",count,elapsedsum/count,(OS_milliseconds() - starttime),command,url);
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if ( retstrp != 0 )
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{
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*retstrp = s.ptr;
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return(s.ptr);
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}
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return(post_process_bitcoind_RPC(debugstr,command,s.ptr,params));
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}
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else
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{
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if ( (0) && specialcase != 0 )
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fprintf(stderr,"<<<<<<<<<<< bitcoind_RPC: BTCD.(%s) -> (%s)\n",params,s.ptr);
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count2++;
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elapsedsum2 += (OS_milliseconds() - starttime);
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if ( (count2 % 10000) == 0)
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printf("%d: ave %9.6f | elapsed %.3f millis | NXT calls.(%s) cmd.(%s)\n",count2,elapsedsum2/count2,(double)(OS_milliseconds() - starttime),url,command);
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return(s.ptr);
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}
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}
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//printf("bitcoind_RPC: impossible case\n");
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//free(s.ptr);
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//return(0);
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}
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/************************************************************************
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*
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* Initialize the string handler so that it is thread safe
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*
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************************************************************************/
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void init_string(struct return_string *s)
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{
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s->len = 0;
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s->ptr = (char *)calloc(1,s->len+1);
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if ( s->ptr == NULL )
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{
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fprintf(stderr,"init_string malloc() failed\n");
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exit(-1);
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}
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s->ptr[0] = '\0';
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}
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/************************************************************************
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*
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* Use the "writer" to accumulate text until done
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*
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************************************************************************/
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size_t accumulate(void *ptr,size_t size,size_t nmemb,struct return_string *s)
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{
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size_t new_len = s->len + size*nmemb;
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s->ptr = (char *)realloc(s->ptr,new_len+1);
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if ( s->ptr == NULL )
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{
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fprintf(stderr, "accumulate realloc() failed\n");
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exit(-1);
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}
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memcpy(s->ptr+s->len,ptr,size*nmemb);
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s->ptr[new_len] = '\0';
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s->len = new_len;
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return(size * nmemb);
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}
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struct MemoryStruct { char *memory; size_t size; };
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static size_t WriteMemoryCallback(void *ptr,size_t size,size_t nmemb,void *data)
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{
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size_t realsize = (size * nmemb);
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struct MemoryStruct *mem = (struct MemoryStruct *)data;
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mem->memory = (ptr != 0) ? realloc(mem->memory,mem->size + realsize + 1) : malloc(mem->size + realsize + 1);
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if ( mem->memory != 0 )
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{
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if ( ptr != 0 )
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memcpy(&(mem->memory[mem->size]),ptr,realsize);
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mem->size += realsize;
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mem->memory[mem->size] = 0;
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}
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//printf("got %d bytes\n",(int32_t)(size*nmemb));
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return(realsize);
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}
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void *curl_post(CURL **cHandlep,char *url,char *userpass,char *postfields,char *hdr0,char *hdr1,char *hdr2,char *hdr3)
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{
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struct MemoryStruct chunk; CURL *cHandle; long code; struct curl_slist *headers = 0;
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if ( (cHandle= *cHandlep) == NULL )
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*cHandlep = cHandle = curl_easy_init();
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else curl_easy_reset(cHandle);
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//#ifdef DEBUG
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//curl_easy_setopt(cHandle,CURLOPT_VERBOSE, 1);
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//#endif
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curl_easy_setopt(cHandle,CURLOPT_USERAGENT,"mozilla/4.0");//"Mozilla/4.0 (compatible; )");
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curl_easy_setopt(cHandle,CURLOPT_SSL_VERIFYPEER,0);
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//curl_easy_setopt(cHandle,CURLOPT_SSLVERSION,1);
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curl_easy_setopt(cHandle,CURLOPT_URL,url);
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curl_easy_setopt(cHandle,CURLOPT_CONNECTTIMEOUT,10);
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if ( userpass != 0 && userpass[0] != 0 )
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curl_easy_setopt(cHandle,CURLOPT_USERPWD,userpass);
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if ( postfields != 0 && postfields[0] != 0 )
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{
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curl_easy_setopt(cHandle,CURLOPT_POST,1);
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curl_easy_setopt(cHandle,CURLOPT_POSTFIELDS,postfields);
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}
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if ( hdr0 != NULL && hdr0[0] != 0 )
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{
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//printf("HDR0.(%s) HDR1.(%s) HDR2.(%s) HDR3.(%s)\n",hdr0!=0?hdr0:"",hdr1!=0?hdr1:"",hdr2!=0?hdr2:"",hdr3!=0?hdr3:"");
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headers = curl_slist_append(headers,hdr0);
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if ( hdr1 != 0 && hdr1[0] != 0 )
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headers = curl_slist_append(headers,hdr1);
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if ( hdr2 != 0 && hdr2[0] != 0 )
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headers = curl_slist_append(headers,hdr2);
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if ( hdr3 != 0 && hdr3[0] != 0 )
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headers = curl_slist_append(headers,hdr3);
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} //headers = curl_slist_append(0,"Expect:");
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if ( headers != 0 )
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curl_easy_setopt(cHandle,CURLOPT_HTTPHEADER,headers);
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//res = curl_easy_perform(cHandle);
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memset(&chunk,0,sizeof(chunk));
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curl_easy_setopt(cHandle,CURLOPT_WRITEFUNCTION,WriteMemoryCallback);
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curl_easy_setopt(cHandle,CURLOPT_WRITEDATA,(void *)&chunk);
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curl_easy_perform(cHandle);
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curl_easy_getinfo(cHandle,CURLINFO_RESPONSE_CODE,&code);
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if ( headers != 0 )
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curl_slist_free_all(headers);
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if ( code != 200 )
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printf("(%s) server responded with code %ld (%s)\n",url,code,chunk.memory);
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return(chunk.memory);
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}
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void curlhandle_free(void *curlhandle)
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{
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curl_easy_cleanup(curlhandle);
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}
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#else
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char *bitcoind_RPC(char **retstrp,char *debugstr,char *url,char *userpass,char *command,char *params)
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{
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return(clonestr("{\"error\":\"curl is disabled\"}"));
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}
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void *curl_post(void **cHandlep,char *url,char *userpass,char *postfields,char *hdr0,char *hdr1,char *hdr2,char *hdr3)
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{
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return(clonestr("{\"error\":\"curl is disabled\"}"));
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}
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#endif
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