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wallet: make the JSON reading type safe

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moneromooo-monero 2016-03-27 16:26:37 +01:00
parent f8d05f3cd9
commit 3e557254c7
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GPG key ID: 686F07454D6CEFC3
1 changed files with 31 additions and 41 deletions
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72
src/simplewallet/simplewallet.cpp
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@ -58,6 +58,7 @@
#include "crypto/crypto.h" // for crypto::secret_key definition #include "crypto/crypto.h" // for crypto::secret_key definition
#include "mnemonics/electrum-words.h" #include "mnemonics/electrum-words.h"
#include "rapidjson/document.h" #include "rapidjson/document.h"
#include "common/json_util.h"
#include <stdexcept> #include <stdexcept>
#if defined(WIN32) #if defined(WIN32)
@ -833,40 +834,27 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
return false; return false;
} }
if (!json.HasMember("version")) { GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, version, unsigned, Uint, true);
fail_msg_writer() << tr("Version not found in JSON");
return false;
}
unsigned int version = json["version"].GetUint();
const int current_version = 1; const int current_version = 1;
if (version > current_version) { if (field_version > current_version) {
fail_msg_writer() << boost::format(tr("Version %u too new, we can only grok up to %u")) % version % current_version; fail_msg_writer() << boost::format(tr("Version %u too new, we can only grok up to %u")) % field_version % current_version;
return false; return false;
} }
if (!json.HasMember("filename")) {
fail_msg_writer() << tr("Filename not found in JSON");
return false;
}
std::string filename = json["filename"].GetString();
bool recover = false; GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, filename, std::string, String, true);
uint64_t scan_from_height = 0;
if (json.HasMember("scan_from_height")) {
scan_from_height = json["scan_from_height"].GetUint64();
recover = true;
}
password = ""; GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, scan_from_height, uint64_t, Uint64, false);
if (json.HasMember("password")) { bool recover = field_scan_from_height_found;
password = json["password"].GetString();
}
std::string viewkey_string(""); GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, password, std::string, String, false);
password = field_password;
GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, viewkey, std::string, String, false);
crypto::secret_key viewkey; crypto::secret_key viewkey;
if (json.HasMember("viewkey")) { if (field_viewkey_found)
viewkey_string = json["viewkey"].GetString(); {
cryptonote::blobdata viewkey_data; cryptonote::blobdata viewkey_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(viewkey_string, viewkey_data)) if(!epee::string_tools::parse_hexstr_to_binbuff(field_viewkey, viewkey_data))
{ {
fail_msg_writer() << tr("failed to parse view key secret key"); fail_msg_writer() << tr("failed to parse view key secret key");
return false; return false;
@ -874,12 +862,12 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
viewkey = *reinterpret_cast<const crypto::secret_key*>(viewkey_data.data()); viewkey = *reinterpret_cast<const crypto::secret_key*>(viewkey_data.data());
} }
std::string spendkey_string(""); GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, spendkey, std::string, String, false);
crypto::secret_key spendkey; crypto::secret_key spendkey;
if (json.HasMember("spendkey")) { if (field_spendkey_found)
spendkey_string = json["spendkey"].GetString(); {
cryptonote::blobdata spendkey_data; cryptonote::blobdata spendkey_data;
if(!epee::string_tools::parse_hexstr_to_binbuff(spendkey_string, spendkey_data)) if(!epee::string_tools::parse_hexstr_to_binbuff(field_spendkey, spendkey_data))
{ {
fail_msg_writer() << tr("failed to parse spend key secret key"); fail_msg_writer() << tr("failed to parse spend key secret key");
return false; return false;
@ -887,30 +875,32 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
spendkey = *reinterpret_cast<const crypto::secret_key*>(spendkey_data.data()); spendkey = *reinterpret_cast<const crypto::secret_key*>(spendkey_data.data());
} }
std::string seed(""); GET_FIELD_FROM_JSON_RETURN_ON_ERROR(json, seed, std::string, String, false);
std::string old_language; std::string old_language;
if (json.HasMember("seed")) { if (field_seed_found)
seed = json["seed"].GetString(); {
if (!crypto::ElectrumWords::words_to_bytes(seed, m_recovery_key, old_language)) if (!crypto::ElectrumWords::words_to_bytes(field_seed, m_recovery_key, old_language))
{ {
fail_msg_writer() << tr("Electrum-style word list failed verification"); fail_msg_writer() << tr("Electrum-style word list failed verification");
return false; return false;
} }
m_electrum_seed = seed; m_electrum_seed = field_seed;
m_restore_deterministic_wallet = true; m_restore_deterministic_wallet = true;
} }
// compatibility checks // compatibility checks
if (seed.empty() && viewkey_string.empty()) { if (!field_seed_found && !field_viewkey_found)
{
fail_msg_writer() << tr("At least one of Electrum-style word list and private view key must be specified"); fail_msg_writer() << tr("At least one of Electrum-style word list and private view key must be specified");
return false; return false;
} }
if (!seed.empty() && (!viewkey_string.empty() || !spendkey_string.empty())) { if (field_seed_found && (field_viewkey_found || field_spendkey_found))
{
fail_msg_writer() << tr("Both Electrum-style word list and private key(s) specified"); fail_msg_writer() << tr("Both Electrum-style word list and private key(s) specified");
return false; return false;
} }
m_wallet_file = filename; m_wallet_file = field_filename;
bool was_deprecated_wallet = m_restore_deterministic_wallet && ((old_language == crypto::ElectrumWords::old_language_name) || bool was_deprecated_wallet = m_restore_deterministic_wallet && ((old_language == crypto::ElectrumWords::old_language_name) ||
crypto::ElectrumWords::get_is_old_style_seed(m_electrum_seed)); crypto::ElectrumWords::get_is_old_style_seed(m_electrum_seed));
@ -925,7 +915,7 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
try try
{ {
if (!seed.empty()) if (!field_seed.empty())
{ {
m_wallet->generate(m_wallet_file, password, m_recovery_key, recover, false); m_wallet->generate(m_wallet_file, password, m_recovery_key, recover, false);
} }
@ -941,7 +931,7 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
return false; return false;
} }
if (spendkey_string.empty()) if (field_spendkey.empty())
{ {
m_wallet->generate(m_wallet_file, password, address, viewkey); m_wallet->generate(m_wallet_file, password, address, viewkey);
} }
@ -957,7 +947,7 @@ bool simple_wallet::generate_from_json(const boost::program_options::variables_m
return false; return false;
} }
m_wallet->set_refresh_from_block_height(scan_from_height); m_wallet->set_refresh_from_block_height(field_scan_from_height);
wallet_file = m_wallet_file; wallet_file = m_wallet_file;