signupeoseos.hpp

//
// Created by Hongbo Tang on 2018/7/5.
//

#include <eosiolib/eosio.hpp>
#include <eosiolib/asset.hpp>
#include <eosiolib/types.hpp>
#include <eosiolib/action.hpp>
#include <eosiolib/symbol.hpp>
#include <eosiolib/crypto.h>
#include <cstring>
using namespace eosio;
using namespace std;

class signupeoseos: public contract {
public:
    signupeoseos(account_name self): contract(self){};
    void transfer(account_name from, account_name to, asset quantity, string memo);
private:
    struct signup_public_key {
        uint8_t        type;
        array<unsigned char,33> data;
    };
    struct permission_level_weight {
        permission_level permission;
        weight_type weight;
    };
    struct key_weight {
        signup_public_key key;
        weight_type weight;
    };
    struct wait_weight {
        uint32_t wait_sec;
        weight_type weight;
    };
    struct authority {
        uint32_t threshold;
        vector<key_weight> keys;
        vector<permission_level_weight> accounts;
        vector<wait_weight> waits;
    };
    struct newaccount {
        account_name creator;
        account_name name;
        authority owner;
        authority active;
    };
};

#define EOSIO_ABI_EX( TYPE, MEMBERS ) \
extern "C" { \
    void apply( uint64_t receiver, uint64_t code, uint64_t action ) { \
        auto self = receiver; \
        if( action == N(onerror)) { \
            /* onerror is only valid if it is for the "eosio" code account and authorized by "eosio"'s "active permission */ \
            eosio_assert(code == N(eosio), "onerror action's are only valid from the \"eosio\" system account"); \
        } \
        if((code == N(eosio.token) && action == N(transfer)) ) { \
            TYPE thiscontract( self ); \
            switch( action ) { \
                EOSIO_API( TYPE, MEMBERS ) \
            } \
         /* does not allow destructor of thiscontract to run: eosio_exit(0); */ \
        } \
    } \
} \

EOSIO_ABI_EX(signupeoseos, (transfer))

// Copied from https://github.com/bitcoin/bitcoin

/** All alphanumeric characters except for "0", "I", "O", and "l" */
static const char* pszBase58 = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz";
static const int8_t mapBase58[256] = {
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1, 0, 1, 2, 3, 4, 5, 6,  7, 8,-1,-1,-1,-1,-1,-1,
        -1, 9,10,11,12,13,14,15, 16,-1,17,18,19,20,21,-1,
        22,23,24,25,26,27,28,29, 30,31,32,-1,-1,-1,-1,-1,
        -1,33,34,35,36,37,38,39, 40,41,42,43,-1,44,45,46,
        47,48,49,50,51,52,53,54, 55,56,57,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
        -1,-1,-1,-1,-1,-1,-1,-1, -1,-1,-1,-1,-1,-1,-1,-1,
};

bool DecodeBase58(const char* psz, std::vector<unsigned char>& vch)
{
    // Skip leading spaces.
    while (*psz && isspace(*psz))
        psz++;
    // Skip and count leading '1's.
    int zeroes = 0;
    int length = 0;
    while (*psz == '1') {
        zeroes++;
        psz++;
    }
    // Allocate enough space in big-endian base256 representation.
    int size = strlen(psz) * 733 /1000 + 1; // log(58) / log(256), rounded up.
    std::vector<unsigned char> b256(size);
    // Process the characters.
    static_assert(sizeof(mapBase58)/sizeof(mapBase58[0]) == 256, "mapBase58.size() should be 256"); // guarantee not out of range
    while (*psz && !isspace(*psz)) {
        // Decode base58 character
        int carry = mapBase58[(uint8_t)*psz];
        if (carry == -1)  // Invalid b58 character
            return false;
        int i = 0;
        for (std::vector<unsigned char>::reverse_iterator it = b256.rbegin(); (carry != 0 || i < length) && (it != b256.rend()); ++it, ++i) {
            carry += 58 * (*it);
            *it = carry % 256;
            carry /= 256;
        }
        assert(carry == 0);
        length = i;
        psz++;
    }
    // Skip trailing spaces.
    while (isspace(*psz))
        psz++;
    if (*psz != 0)
        return false;
    // Skip leading zeroes in b256.
    std::vector<unsigned char>::iterator it = b256.begin() + (size - length);
    while (it != b256.end() && *it == 0)
        it++;
    // Copy result into output vector.
    vch.reserve(zeroes + (b256.end() - it));
    vch.assign(zeroes, 0x00);
    while (it != b256.end())
        vch.push_back(*(it++));
    return true;
}

bool decode_base58(const string& str, vector<unsigned char>& vch) {
    return DecodeBase58(str.c_str(), vch);
}