mirror of
https://github.com/XRPLF/rippled.git
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47593730d6
* Clean STBase-derived class creation interfaces * Annotate overriden STBase virtual functions * Optimize path deserialization * Prefer range-based for * Prefer std::unique_ptr * Remove BOOST_FOREACH
880 lines
25 KiB
C++
880 lines
25 KiB
C++
//------------------------------------------------------------------------------
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/*
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This file is part of rippled: https://github.com/ripple/rippled
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Copyright (c) 2012, 2013 Ripple Labs Inc.
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Permission to use, copy, modify, and/or distribute this software for any
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purpose with or without fee is hereby granted, provided that the above
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copyright notice and this permission notice appear in all copies.
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THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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//==============================================================================
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#include <BeastConfig.h>
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#include <ripple/basics/StringUtilities.h>
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#include <ripple/protocol/STInteger.h>
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#include <ripple/protocol/ErrorCodes.h>
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#include <ripple/protocol/LedgerFormats.h>
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#include <ripple/protocol/STAccount.h>
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#include <ripple/protocol/STAmount.h>
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#include <ripple/protocol/STArray.h>
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#include <ripple/protocol/STBitString.h>
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#include <ripple/protocol/STBlob.h>
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#include <ripple/protocol/STVector256.h>
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#include <ripple/protocol/STParsedJSON.h>
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#include <ripple/protocol/STPathSet.h>
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#include <ripple/protocol/TxFormats.h>
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#include <beast/module/core/text/LexicalCast.h>
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#include <cassert>
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#include <beast/cxx14/memory.h> // <memory>
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namespace ripple {
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namespace STParsedJSONDetail
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{
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template <typename T, typename U>
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static T range_check_cast (U value, T minimum, T maximum)
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{
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if ((value < minimum) || (value > maximum))
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throw std::runtime_error ("Value out of range");
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return static_cast<T> (value);
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}
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static std::string make_name (std::string const& object,
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std::string const& field)
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{
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if (field.empty ())
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return object;
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return object + "." + field;
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}
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static Json::Value not_an_object (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' is not a JSON object.");
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}
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static Json::Value not_an_object (std::string const& object)
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{
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return not_an_object (object, "");
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}
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static Json::Value not_an_array (std::string const& object)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + object + "' is not a JSON array.");
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}
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static Json::Value unknown_field (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' is unknown.");
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}
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static Json::Value out_of_range (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' is out of range.");
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}
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static Json::Value bad_type (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' has bad type.");
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}
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static Json::Value invalid_data (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' has invalid data.");
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}
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static Json::Value invalid_data (std::string const& object)
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{
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return invalid_data (object, "");
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}
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static Json::Value array_expected (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' must be a JSON array.");
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}
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static Json::Value string_expected (std::string const& object,
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std::string const& field)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + make_name (object, field) + "' must be a string.");
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}
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static Json::Value too_deep (std::string const& object)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + object + "' exceeds nesting depth limit.");
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}
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static Json::Value singleton_expected (std::string const& object,
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unsigned int index)
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{
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return RPC::make_error (rpcINVALID_PARAMS,
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"Field '" + object + "[" + std::to_string (index) +
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"]' must be an object with a single key/object value.");
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}
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// This function is used by parseObject to parse any JSON type that doesn't
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// recurse. Everything represented here is a leaf-type.
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static std::unique_ptr <STBase> parseLeaf (
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std::string const& json_name,
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std::string const& fieldName,
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SField::ptr name,
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Json::Value const& value,
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Json::Value& error)
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{
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std::unique_ptr <STBase> ret;
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SField::ref field = SField::getField (fieldName);
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if (field == sfInvalid)
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{
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error = unknown_field (json_name, fieldName);
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return ret;
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}
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switch (field.fieldType)
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{
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case STI_UINT8:
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try
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{
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if (value.isString ())
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{
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// VFALCO TODO wtf?
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}
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else if (value.isInt ())
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{
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if (value.asInt () < 0 || value.asInt () > 255)
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{
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error = out_of_range (json_name, fieldName);
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return ret;
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}
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ret = std::make_unique <STUInt8> (field,
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range_check_cast <unsigned char> (
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value.asInt (), 0, 255));
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}
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else if (value.isUInt ())
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{
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if (value.asUInt () > 255)
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{
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error = out_of_range (json_name, fieldName);
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return ret;
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}
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ret = std::make_unique <STUInt8> (field,
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range_check_cast <unsigned char> (
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value.asUInt (), 0, 255));
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_UINT16:
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try
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{
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if (value.isString ())
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{
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std::string const strValue = value.asString ();
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if (! strValue.empty () &&
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((strValue[0] < '0') || (strValue[0] > '9')))
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{
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if (field == sfTransactionType)
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{
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TxType const txType (TxFormats::getInstance().
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findTypeByName (strValue));
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ret = std::make_unique <STUInt16> (field,
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static_cast <std::uint16_t> (txType));
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if (*name == sfGeneric)
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name = &sfTransaction;
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}
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else if (field == sfLedgerEntryType)
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{
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LedgerEntryType const type (
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LedgerFormats::getInstance().
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findTypeByName (strValue));
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ret = std::make_unique <STUInt16> (field,
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static_cast <std::uint16_t> (type));
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if (*name == sfGeneric)
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name = &sfLedgerEntry;
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}
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else
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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}
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else
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{
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ret = std::make_unique <STUInt16> (field,
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beast::lexicalCastThrow <std::uint16_t> (strValue));
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}
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}
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else if (value.isInt ())
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{
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ret = std::make_unique <STUInt16> (field,
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range_check_cast <std::uint16_t> (
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value.asInt (), 0, 65535));
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}
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else if (value.isUInt ())
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{
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ret = std::make_unique <STUInt16> (field,
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range_check_cast <std::uint16_t> (
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value.asUInt (), 0, 65535));
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_UINT32:
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try
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{
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if (value.isString ())
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{
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ret = std::make_unique <STUInt32> (field,
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beast::lexicalCastThrow <std::uint32_t> (
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value.asString ()));
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}
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else if (value.isInt ())
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{
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ret = std::make_unique <STUInt32> (field,
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range_check_cast <std::uint32_t> (
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value.asInt (), 0u, 4294967295u));
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}
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else if (value.isUInt ())
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{
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ret = std::make_unique <STUInt32> (field,
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static_cast <std::uint32_t> (value.asUInt ()));
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_UINT64:
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try
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{
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if (value.isString ())
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{
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ret = std::make_unique <STUInt64> (field,
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uintFromHex (value.asString ()));
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}
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else if (value.isInt ())
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{
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ret = std::make_unique <STUInt64> (field,
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range_check_cast<std::uint64_t> (
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value.asInt (), 0, 18446744073709551615ull));
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}
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else if (value.isUInt ())
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{
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ret = std::make_unique <STUInt64> (field,
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static_cast <std::uint64_t> (value.asUInt ()));
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_HASH128:
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try
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{
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if (value.isString ())
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{
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ret = std::make_unique <STHash128> (field, value.asString ());
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_HASH160:
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try
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{
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if (value.isString ())
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{
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ret = std::make_unique <STHash160> (field, value.asString ());
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_HASH256:
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try
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{
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if (value.isString ())
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{
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ret = std::make_unique <STHash256> (field, value.asString ());
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}
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else
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_VL:
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if (! value.isString ())
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{
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error = bad_type (json_name, fieldName);
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return ret;
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}
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try
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{
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std::pair<Blob, bool> vBlob (strUnHex (value.asString ()));
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if (!vBlob.second)
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throw std::invalid_argument ("invalid data");
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ret = std::make_unique <STBlob> (field, vBlob.first);
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_AMOUNT:
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try
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{
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ret = std::make_unique <STAmount> (amountFromJson (field, value));
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_VECTOR256:
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if (! value.isArray ())
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{
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error = array_expected (json_name, fieldName);
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return ret;
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}
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try
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{
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std::unique_ptr <STVector256> tail =
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std::make_unique <STVector256> (field);
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for (Json::UInt i = 0; value.isValidIndex (i); ++i)
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{
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uint256 s;
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s.SetHex (value[i].asString ());
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tail->push_back (s);
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}
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ret = std::move (tail);
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}
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catch (...)
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{
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error = invalid_data (json_name, fieldName);
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return ret;
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}
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break;
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case STI_PATHSET:
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if (!value.isArray ())
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{
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error = array_expected (json_name, fieldName);
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return ret;
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}
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try
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{
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std::unique_ptr <STPathSet> tail =
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std::make_unique <STPathSet> (field);
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for (Json::UInt i = 0; value.isValidIndex (i); ++i)
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{
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STPath p;
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if (!value[i].isArray ())
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{
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std::stringstream ss;
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ss << fieldName << "[" << i << "]";
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error = array_expected (json_name, ss.str ());
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return ret;
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}
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for (Json::UInt j = 0; value[i].isValidIndex (j); ++j)
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{
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std::stringstream ss;
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ss << fieldName << "[" << i << "][" << j << "]";
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std::string const element_name (
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json_name + "." + ss.str());
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// each element in this path has some combination of
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// account, currency, or issuer
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Json::Value pathEl = value[i][j];
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if (!pathEl.isObject ())
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{
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error = not_an_object (element_name);
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return ret;
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}
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Json::Value const& account = pathEl["account"];
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Json::Value const& currency = pathEl["currency"];
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Json::Value const& issuer = pathEl["issuer"];
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bool hasCurrency = false;
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Account uAccount, uIssuer;
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Currency uCurrency;
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if (! account.isNull ())
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{
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// human account id
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if (! account.isString ())
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{
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error = string_expected (element_name, "account");
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return ret;
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}
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std::string const strValue (account.asString ());
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if (value.size () == 40) // 160-bit hex account value
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uAccount.SetHex (strValue);
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{
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RippleAddress a;
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if (! a.setAccountID (strValue))
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{
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error = invalid_data (element_name, "account");
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return ret;
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}
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uAccount = a.getAccountID ();
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}
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}
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if (!currency.isNull ())
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{
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// human currency
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if (!currency.isString ())
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{
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error = string_expected (element_name, "currency");
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return ret;
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}
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hasCurrency = true;
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if (currency.asString ().size () == 40)
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{
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uCurrency.SetHex (currency.asString ());
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}
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else if (!to_currency (uCurrency, currency.asString ()))
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{
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error = invalid_data (element_name, "currency");
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return ret;
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}
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}
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if (!issuer.isNull ())
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{
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// human account id
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if (!issuer.isString ())
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{
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error = string_expected (element_name, "issuer");
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return ret;
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}
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if (issuer.asString ().size () == 40)
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{
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uIssuer.SetHex (issuer.asString ());
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}
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else
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{
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RippleAddress a;
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if (!a.setAccountID (issuer.asString ()))
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{
|
|
error = invalid_data (element_name, "issuer");
|
|
return ret;
|
|
}
|
|
|
|
uIssuer = a.getAccountID ();
|
|
}
|
|
}
|
|
|
|
p.emplace_back (uAccount, uCurrency, uIssuer, hasCurrency);
|
|
}
|
|
|
|
tail->push_back (p);
|
|
}
|
|
ret = std::move (tail);
|
|
}
|
|
catch (...)
|
|
{
|
|
error = invalid_data (json_name, fieldName);
|
|
return ret;
|
|
}
|
|
|
|
break;
|
|
|
|
case STI_ACCOUNT:
|
|
{
|
|
if (! value.isString ())
|
|
{
|
|
error = bad_type (json_name, fieldName);
|
|
return ret;
|
|
}
|
|
|
|
std::string const strValue = value.asString ();
|
|
|
|
try
|
|
{
|
|
if (value.size () == 40) // 160-bit hex account value
|
|
{
|
|
Account account;
|
|
account.SetHex (strValue);
|
|
ret = std::make_unique <STAccount> (field, account);
|
|
}
|
|
else
|
|
{
|
|
// ripple address
|
|
RippleAddress a;
|
|
|
|
if (!a.setAccountID (strValue))
|
|
{
|
|
error = invalid_data (json_name, fieldName);
|
|
return ret;
|
|
}
|
|
|
|
ret =
|
|
std::make_unique <STAccount> (field, a.getAccountID ());
|
|
}
|
|
}
|
|
catch (...)
|
|
{
|
|
error = invalid_data (json_name, fieldName);
|
|
return ret;
|
|
}
|
|
}
|
|
break;
|
|
|
|
default:
|
|
error = bad_type (json_name, fieldName);
|
|
return ret;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static const int maxDepth = 64;
|
|
|
|
// Forward declaration since parseObject() and parseArray() call each other.
|
|
static bool parseArray (
|
|
std::string const& json_name,
|
|
Json::Value const& json,
|
|
SField::ref inName,
|
|
int depth,
|
|
std::unique_ptr <STArray>& sub_array,
|
|
Json::Value& error);
|
|
|
|
|
|
|
|
static bool parseObject (
|
|
std::string const& json_name,
|
|
Json::Value const& json,
|
|
SField::ref inName,
|
|
int depth,
|
|
std::unique_ptr <STObject>& sub_object,
|
|
Json::Value& error)
|
|
{
|
|
if (! json.isObject ())
|
|
{
|
|
error = not_an_object (json_name);
|
|
return false;
|
|
}
|
|
|
|
if (depth > maxDepth)
|
|
{
|
|
error = too_deep (json_name);
|
|
return false;
|
|
}
|
|
|
|
SField::ptr name (&inName);
|
|
|
|
boost::ptr_vector<STBase> data;
|
|
Json::Value::Members members (json.getMemberNames ());
|
|
|
|
for (auto const& fieldName : members)
|
|
{
|
|
Json::Value const& value = json [fieldName];
|
|
|
|
SField::ref field = SField::getField (fieldName);
|
|
|
|
if (field == sfInvalid)
|
|
{
|
|
error = unknown_field (json_name, fieldName);
|
|
return false;
|
|
}
|
|
|
|
switch (field.fieldType)
|
|
{
|
|
|
|
// Object-style containers (which recurse).
|
|
case STI_OBJECT:
|
|
case STI_TRANSACTION:
|
|
case STI_LEDGERENTRY:
|
|
case STI_VALIDATION:
|
|
if (! value.isObject ())
|
|
{
|
|
error = not_an_object (json_name, fieldName);
|
|
return false;
|
|
}
|
|
|
|
try
|
|
{
|
|
std::unique_ptr <STObject> sub_object_;
|
|
bool const success (parseObject (json_name + "." + fieldName,
|
|
value, field, depth + 1, sub_object_, error));
|
|
if (! success)
|
|
return false;
|
|
data.push_back (sub_object_.release ());
|
|
}
|
|
catch (...)
|
|
{
|
|
error = invalid_data (json_name, fieldName);
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
// Array-style containers (which recurse).
|
|
case STI_ARRAY:
|
|
try
|
|
{
|
|
std::unique_ptr <STArray> sub_array_;
|
|
bool const success (parseArray (json_name + "." + fieldName,
|
|
value, field, depth + 1, sub_array_, error));
|
|
if (! success)
|
|
return false;
|
|
data.push_back (sub_array_.release ());
|
|
}
|
|
catch (...)
|
|
{
|
|
error = invalid_data (json_name, fieldName);
|
|
return false;
|
|
}
|
|
|
|
break;
|
|
|
|
// Everything else (types that don't recurse).
|
|
default:
|
|
{
|
|
std::unique_ptr <STBase> serTyp =
|
|
parseLeaf (json_name, fieldName, name, value, error);
|
|
|
|
if (!serTyp)
|
|
return false;
|
|
|
|
data.push_back (serTyp.release ());
|
|
}
|
|
|
|
break;
|
|
}
|
|
}
|
|
|
|
sub_object = std::make_unique <STObject> (*name, data);
|
|
return true;
|
|
}
|
|
|
|
static bool parseArray (
|
|
std::string const& json_name,
|
|
Json::Value const& json,
|
|
SField::ref inName,
|
|
int depth,
|
|
std::unique_ptr <STArray>& sub_array,
|
|
Json::Value& error)
|
|
{
|
|
if (! json.isArray ())
|
|
{
|
|
error = not_an_array (json_name);
|
|
return false;
|
|
}
|
|
|
|
if (depth > maxDepth)
|
|
{
|
|
error = too_deep (json_name);
|
|
return false;
|
|
}
|
|
|
|
try
|
|
{
|
|
std::unique_ptr <STArray> tail = std::make_unique <STArray> (inName);
|
|
|
|
for (Json::UInt i = 0; json.isValidIndex (i); ++i)
|
|
{
|
|
bool const isObject (json[i].isObject());
|
|
bool const singleKey (isObject ? json[i].size() == 1 : true);
|
|
|
|
if (!isObject || !singleKey)
|
|
{
|
|
error = singleton_expected (json_name, i);
|
|
return false;
|
|
}
|
|
|
|
// TODO: There doesn't seem to be a nice way to get just the
|
|
// first/only key in an object without copying all keys into
|
|
// a vector
|
|
std::string const objectName (json[i].getMemberNames()[0]);;
|
|
SField::ref nameField (SField::getField(objectName));
|
|
|
|
if (nameField == sfInvalid)
|
|
{
|
|
error = unknown_field (json_name, objectName);
|
|
return false;
|
|
}
|
|
|
|
Json::Value const objectFields (json[i][objectName]);
|
|
|
|
std::unique_ptr <STObject> sub_object_;
|
|
{
|
|
std::stringstream ss;
|
|
ss << json_name << "." <<
|
|
"[" << i << "]." << objectName;
|
|
bool const success (parseObject (ss.str (), objectFields,
|
|
nameField, depth + 1, sub_object_, error));
|
|
|
|
if (! success ||
|
|
(sub_object_->getFName().fieldType != STI_OBJECT))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
tail->push_back (*sub_object_);
|
|
}
|
|
sub_array = std::move (tail);
|
|
}
|
|
catch (...)
|
|
{
|
|
error = invalid_data (json_name);
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
} // STParsedJSONDetail
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
STParsedJSONObject::STParsedJSONObject (
|
|
std::string const& name,
|
|
Json::Value const& json)
|
|
{
|
|
using namespace STParsedJSONDetail;
|
|
parseObject (name, json, sfGeneric, 0, object, error);
|
|
}
|
|
|
|
//------------------------------------------------------------------------------
|
|
|
|
STParsedJSONArray::STParsedJSONArray (
|
|
std::string const& name,
|
|
Json::Value const& json)
|
|
{
|
|
using namespace STParsedJSONDetail;
|
|
parseArray (name, json, sfGeneric, 0, array, error);
|
|
}
|
|
|
|
|
|
|
|
} // ripple
|