SNapi.c

#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <fcntl.h>
#include <string.h>
#include "nanosrc/nn.h"
#include "nanosrc/pair.h"
#include "nanosrc/pipeline.h"
#include "plugins/includes/cJSON.h"

#define SUPERNET_APIENDPOINT "tcp://127.0.0.1:7776"

static const uint32_t crc32_tab[] = {
	0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
	0xe963a535, 0x9e6495a3,	0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
	0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
	0xf3b97148, 0x84be41de,	0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
	0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec,	0x14015c4f, 0x63066cd9,
	0xfa0f3d63, 0x8d080df5,	0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
	0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,	0x35b5a8fa, 0x42b2986c,
	0xdbbbc9d6, 0xacbcf940,	0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
	0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
	0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
	0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d,	0x76dc4190, 0x01db7106,
	0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
	0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
	0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
	0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
	0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
	0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
	0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
	0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
	0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
	0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
	0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
	0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
	0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
	0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
	0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
	0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
	0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
	0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
	0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
	0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
	0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
	0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
	0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
	0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
	0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
	0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
	0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
	0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
	0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
	0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
	0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
	0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};

#ifdef __WIN32

// from tweetnacl
void randombytes(unsigned char *x,long xlen)
{
    HCRYPTPROV prov = 0;
    CryptAcquireContextW(&prov, NULL, NULL,PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
    CryptGenRandom(prov, xlen, x);
    CryptReleaseContext(prov, 0);
}

int32_t OS_init()
{
    // Initialize Windows Sockets
    WSADATA wsadata;
    int ret = WSAStartup(MAKEWORD(2,2), &wsadata);
    if (ret != NO_ERROR)
    {
        printf("Error: TCP/IP socket library failed to start (WSAStartup returned error %d)\n", ret);
        //printf("%s\n", strError.c_str());
        return -1;
    }
    return(0);
}
#else

int32_t OS_init() { return(0); }

// from tweetnacl
void randombytes(unsigned char *x,long xlen)
{
    static int fd = -1;
    int32_t i;
    if (fd == -1) {
        for (;;) {
            fd = open("/dev/urandom",O_RDONLY);
            if (fd != -1) break;
            sleep(1);
        }
    }
    while (xlen > 0) {
        if (xlen < 1048576) i = (int32_t)xlen; else i = 1048576;
        i = (int32_t)read(fd,x,i);
        if (i < 1) {
            sleep(1);
            continue;
        }
        if ( 0 )
        {
            int32_t j;
            for (j=0; j<i; j++)
                printf("%02x ",x[j]);
            printf("-> %p\n",x);
        }
        x += i;
        xlen -= i;
    }
}

#endif

static uint32_t _crc32(uint32_t crc,const void *buf,size_t size)
{
	const uint8_t *p;
    
	p = (const uint8_t *)buf;
	crc = crc ^ ~0U;
    
	while (size--)
		crc = crc32_tab[(crc ^ *p++) & 0xFF] ^ (crc >> 8);
    
	return crc ^ ~0U;
}

void msleep(uint32_t milliseconds)
{
    void nn_sleep (int milliseconds);
    nn_sleep(milliseconds);
}

char *clonestr(char *str)
{
    char *clone;
    if ( str == 0 || str[0] == 0 )
    {
        printf("warning cloning nullstr.%p\n",str);
#ifdef __APPLE__
        while ( 1 ) msleep(1000);
#endif
        str = (char *)"<nullstr>";
    }
    clone = (char *)malloc(strlen(str)+16);
    strcpy(clone,str);
    return(clone);
}

int64_t conv_floatstr(char *numstr)
{
    double val,corr;
    val = atof(numstr);
    corr = (val < 0.) ? -0.50000000001 : 0.50000000001;
    return((int64_t)(val * SATOSHIDEN + corr));
}

int32_t myatoi(char *str,int32_t range)
{
    long x; char *ptr;
    x = strtol(str,&ptr,10);
    if ( range != 0 && x >= range )
        x = (range - 1);
    return((int32_t)x);
}

int32_t safecopy(char *dest,char *src,long len)
{
    int32_t i = -1;
    if ( dest != 0 )
        memset(dest,0,len);
    if ( src != 0 && dest != 0 )
    {
        for (i=0; i<len&&src[i]!=0; i++)
            dest[i] = src[i];
        if ( i == len )
        {
            printf("safecopy: %s too long %ld\n",src,len);
#ifdef __APPLE__
            //getchar();
#endif
            return(-1);
        }
        dest[i] = 0;
    }
    return(i);
}

long _stripwhite(char *buf,int accept)
{
    int32_t i,j,c;
    if ( buf == 0 || buf[0] == 0 )
        return(0);
    for (i=j=0; buf[i]!=0; i++)
    {
        buf[j] = c = buf[i];
        if ( c == accept || (c != ' ' && c != '\n' && c != '\r' && c != '\t' && c != '\b') )
            j++;
    }
    buf[j] = 0;
    return(j);
}

void process_json(cJSON *json,char *remoteaddr,int32_t localaccess)
{
    int32_t sock,len,checklen,sendtimeout,recvtimeout; uint32_t apitag; uint64_t tag;
    char endpoint[128],numstr[64],*resultstr,*jsonstr;
    jsonstr = cJSON_Print(json), _stripwhite(jsonstr,' ');
    len = (int32_t)strlen(jsonstr)+1;
    apitag = _crc32(0,jsonstr,len);
    sprintf(endpoint,"ipc://api.%u",apitag);
    free(jsonstr);
    if ( (recvtimeout= juint(json,"timeout")) == 0 )
        recvtimeout = 30000;
    sendtimeout = 30000;
    randombytes((uint8_t *)&tag,sizeof(tag));
    if ( cJSON_GetObjectItem(json,"tag") == 0 )
        sprintf(numstr,"%llu",(long long)tag), cJSON_AddItemToObject(json,"tag",cJSON_CreateString(numstr));
    if ( cJSON_GetObjectItem(json,"apitag") == 0 )
        cJSON_AddItemToObject(json,"apitag",cJSON_CreateString(endpoint));
    if ( remoteaddr != 0 )
        cJSON_AddItemToObject(json,"broadcast",cJSON_CreateString("remoteaccess"));
    if ( localaccess != 0 )
        cJSON_AddItemToObject(json,"localaccess",cJSON_CreateNumber(1));
    jsonstr = cJSON_Print(json), _stripwhite(jsonstr,' ');
    //fprintf(stderr,"localacess.%d remote.(%s) jsonstr.(%s)\r\n",localaccess,remoteaddr!=0?remoteaddr:"",jsonstr);
    len = (int32_t)strlen(jsonstr)+1;
    if ( jsonstr != 0 )
    {
        if ( (sock= nn_socket(AF_SP,NN_PAIR)) >= 0 )
        {
            if ( sendtimeout > 0 && nn_setsockopt(sock,NN_SOL_SOCKET,NN_SNDTIMEO,&sendtimeout,sizeof(sendtimeout)) < 0 )
                fprintf(stderr,"error setting sendtimeout %s\n",nn_errstr());
            if ( nn_connect(sock,SUPERNET_APIENDPOINT) < 0 )
                printf("error connecting to apiendpoint sock.%d type.%d (%s) %s\r\n",sock,NN_PUSH,SUPERNET_APIENDPOINT,nn_errstr());
            else if ( (checklen= nn_send(sock,jsonstr,len,0)) != len )
                printf("checklen.%d != len.%d for nn_send to (%s)\r\n",checklen,len,SUPERNET_APIENDPOINT);
            else
            {
                if ( recvtimeout > 0 && nn_setsockopt(sock,NN_SOL_SOCKET,NN_RCVTIMEO,&recvtimeout,sizeof(recvtimeout)) < 0 )
                    fprintf(stderr,"error setting sendtimeout %s\n",nn_errstr());
                if ( nn_recv(sock,&resultstr,NN_MSG,0) > 0 )
                {
                    //printf("Content-Length: %ld\r\n\r\n",strlen(resultstr)+2);
                    printf("%s\r\n",resultstr);
                    nn_freemsg(resultstr);
                } else printf("error getting results %s\r\n",nn_errstr());
            }
            nn_shutdown(sock,0);
        } else printf("error getting pushsock.%s\r\n",nn_errstr());
    }
    free(jsonstr);
}

int32_t main(int32_t argc,char *argv[])
{
    cJSON *json;
    if ( argc > 1 && (json= cJSON_Parse(argv[1])) != 0 )
    {
        OS_init();
        process_json(json,0,1);
        free_json(json);
    }
    else printf("argc.%d %s: (%s)\n",argc,argv[0],argv[1] != 0 ? argv[1] : "");
    return(0);
}