text: /*
   * This file is part of the TREZOR project, https://trezor.io/
   *
   * Copyright (C) 2014 Pavol Rusnak <stick@satoshilabs.com>
   *
   * This library is free software: you can redistribute it and/or modify
   * it under the terms of the GNU Lesser General Public License as published by
   * the Free Software Foundation, either version 3 of the License, or
   * (at your option) any later version.
   *
   * This library is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU Lesser General Public License for more details.
   *
   * You should have received a copy of the GNU Lesser General Public License
   * along with this library.  If not, see <http://www.gnu.org/licenses/>.
   */
  
  #include <string.h>
  #include "coins.h"
  #include "address.h"
  #include "curves.h"
  #include "ecdsa.h"
  #include "base58.h"
  #include "secp256k1.h"
  
  // filled CoinInfo structure defined in coins.h
  const CoinInfo coins[COINS_COUNT] = {
  #include "coins_array.h"
  };
  
  const CoinInfo *coinByName(const char *name)
  {
  	if (!name) return 0;
  	for (int i = 0; i < COINS_COUNT; i++) {
  		if (strcmp(name, coins[i].coin_name) == 0) {
  			return &(coins[i]);
  		}
  	}
  	return 0;
  }
  
  const CoinInfo *coinByAddressType(uint32_t address_type)
  {
  	for (int i = 0; i < COINS_COUNT; i++) {
  		if (address_type == coins[i].address_type) {
  			return &(coins[i]);
  		}
  	}
  	return 0;
  }
  
  const CoinInfo *coinByCoinType(uint32_t coin_type)
  {
  	for (int i = 0; i < COINS_COUNT; i++) {
  		if (coin_type == coins[i].coin_type) {
  			return &(coins[i]);
  		}
  	}
  	return 0;
  }
  
  bool coinExtractAddressType(const CoinInfo *coin, const char *addr, uint32_t *address_type)
  {
  	if (!addr) return false;
  	uint8_t addr_raw[MAX_ADDR_RAW_SIZE];
  	int len = base58_decode_check(addr, coin->curve->hasher_type, addr_raw, MAX_ADDR_RAW_SIZE);
  	if (len >= 21) {
  		return coinExtractAddressTypeRaw(coin, addr_raw, address_type);
  	}
  	return false;
  }
  
  bool coinExtractAddressTypeRaw(const CoinInfo *coin, const uint8_t *addr_raw, uint32_t *address_type)
  {
  	if (coin->has_address_type && address_check_prefix(addr_raw, coin->address_type)) {
  		*address_type = coin->address_type;
  		return true;
  	}
  	if (coin->has_address_type_p2sh && address_check_prefix(addr_raw, coin->address_type_p2sh)) {
  		*address_type = coin->address_type_p2sh;
  		return true;
  	}
  	*address_type = 0;
  	return false;
  }
  