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Allow wallet2.h to run in WebAssembly
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- Add abstract_http_client.h which http_client.h extends.
- Replace simple_http_client with abstract_http_client in wallet2,
message_store, message_transporter, and node_rpc_proxy.
- Import and export wallet data in wallet2.
- Use #if defined __EMSCRIPTEN__ directives to skip incompatible code.
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@woodser
woodser committed Apr 1, 2020
1 parent 6c7d928 commit 4bedc21
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Showing 16 changed files with 530 additions and 319 deletions.
84 changes: 84 additions & 0 deletions contrib/epee/include/net/abstract_http_client.h
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@@ -0,0 +1,84 @@
// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are met:
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of the Andrey N. Sabelnikov nor the
// names of its contributors may be used to endorse or promote products
// derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER BE LIABLE FOR ANY
// DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
// ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
// SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

#pragma once

#include <string>
#include <boost/optional/optional.hpp>
#include "http_auth.h"
#include "net/net_ssl.h"

namespace epee
{
namespace net_utils
{
inline const char* get_hex_vals()
{
static constexpr const char hexVals[16] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
return hexVals;
}

inline const char* get_unsave_chars()
{
//static constexpr char unsave_chars[] = "\"<>%\\^[]`+$,@:;/!#?=&";
static constexpr const char unsave_chars[] = "\"<>%\\^[]`+$,@:;!#&";
return unsave_chars;
}

bool is_unsafe(unsigned char compare_char);
std::string dec_to_hex(char num, int radix);
int get_index(const char *s, char c);
std::string hex_to_dec_2bytes(const char *s);
std::string convert(char val);
std::string conver_to_url_format(const std::string& uri);
std::string convert_from_url_format(const std::string& uri);
std::string convert_to_url_format_force_all(const std::string& uri);

namespace http
{
/**
* Abstract HTTP client interface.
*/
class abstract_http_client
{
public:
abstract_http_client() {}
virtual ~abstract_http_client() {}
virtual abstract_http_client* clone() const = 0;
bool set_server(const std::string& address, boost::optional<login> user, ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect);
virtual void set_server(std::string host, std::string port, boost::optional<login> user, ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect) = 0;
virtual void set_auto_connect(bool auto_connect) = 0;
virtual bool connect(std::chrono::milliseconds timeout) = 0;
virtual bool disconnect() = 0;
virtual bool is_connected(bool *ssl = NULL) = 0;
virtual bool invoke(const boost::string_ref uri, const boost::string_ref method, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) = 0;
virtual bool invoke_get(const boost::string_ref uri, std::chrono::milliseconds timeout, const std::string& body = std::string(), const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) = 0;
virtual bool invoke_post(const boost::string_ref uri, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) = 0;
virtual uint64_t get_bytes_sent() const = 0;
virtual uint64_t get_bytes_received() const = 0;
};
}
}
}
191 changes: 39 additions & 152 deletions contrib/epee/include/net/http_client.h
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Original file line number Diff line number Diff line change
Expand Up @@ -47,6 +47,7 @@

#include "string_tools.h"
#include "reg_exp_definer.h"
#include "abstract_http_client.h"
#include "http_base.h"
#include "http_auth.h"
#include "to_nonconst_iterator.h"
Expand Down Expand Up @@ -105,140 +106,11 @@ namespace net_utils


//---------------------------------------------------------------------------
static inline const char* get_hex_vals()
{
static const char hexVals[16] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
return hexVals;
}

static inline const char* get_unsave_chars()
{
//static char unsave_chars[] = "\"<>%\\^[]`+$,@:;/!#?=&";
static const char unsave_chars[] = "\"<>%\\^[]`+$,@:;!#&";
return unsave_chars;
}

static inline bool is_unsafe(unsigned char compare_char)
{
if(compare_char <= 32 || compare_char >= 123)
return true;

const char* punsave = get_unsave_chars();

for(int ichar_pos = 0; 0!=punsave[ichar_pos] ;ichar_pos++)
if(compare_char == punsave[ichar_pos])
return true;

return false;
}

static inline
std::string dec_to_hex(char num, int radix)
{
int temp=0;
std::string csTmp;
int num_char;

num_char = (int) num;
if (num_char < 0)
num_char = 256 + num_char;

while (num_char >= radix)
{
temp = num_char % radix;
num_char = (int)floor((float)num_char / (float)radix);
csTmp = get_hex_vals()[temp];
}

csTmp += get_hex_vals()[num_char];

if(csTmp.size() < 2)
{
csTmp += '0';
}

std::reverse(csTmp.begin(), csTmp.end());
//_mbsrev((unsigned char*)csTmp.data());

return csTmp;
}
static inline int get_index(const char *s, char c) { const char *ptr = (const char*)memchr(s, c, 16); return ptr ? ptr-s : -1; }
static inline
std::string hex_to_dec_2bytes(const char *s)
{
const char *hex = get_hex_vals();
int i0 = get_index(hex, toupper(s[0]));
int i1 = get_index(hex, toupper(s[1]));
if (i0 < 0 || i1 < 0)
return std::string("%") + std::string(1, s[0]) + std::string(1, s[1]);
return std::string(1, i0 * 16 | i1);
}

static inline std::string convert(char val)
{
std::string csRet;
csRet += "%";
csRet += dec_to_hex(val, 16);
return csRet;
}
static inline std::string conver_to_url_format(const std::string& uri)
{

std::string result;

for(size_t i = 0; i!= uri.size(); i++)
{
if(is_unsafe(uri[i]))
result += convert(uri[i]);
else
result += uri[i];

}

return result;
}
static inline std::string convert_from_url_format(const std::string& uri)
{

std::string result;

for(size_t i = 0; i!= uri.size(); i++)
{
if(uri[i] == '%' && i + 2 < uri.size())
{
result += hex_to_dec_2bytes(uri.c_str() + i + 1);
i += 2;
}
else
result += uri[i];

}

return result;
}

static inline std::string convert_to_url_format_force_all(const std::string& uri)
{

std::string result;

for(size_t i = 0; i!= uri.size(); i++)
{
result += convert(uri[i]);
}

return result;
}





namespace http
{

template<typename net_client_type>
class http_simple_client_template: public i_target_handler
class http_simple_client_template : public i_target_handler, public abstract_http_client
{
private:
enum reciev_machine_state
Expand Down Expand Up @@ -279,7 +151,7 @@ namespace net_utils

public:
explicit http_simple_client_template()
: i_target_handler()
: i_target_handler(), abstract_http_client()
, m_net_client()
, m_host_buff()
, m_port()
Expand All @@ -296,29 +168,45 @@ namespace net_utils
, m_lock()
{}

explicit http_simple_client_template(const http_simple_client_template& other)
: i_target_handler(), abstract_http_client()
, m_net_client()
, m_host_buff(other.m_host_buff)
, m_port(other.m_port)
, m_auth(other.m_auth)
, m_header_cache(other.m_header_cache)
, m_response_info(other.m_response_info)
, m_len_in_summary(other.m_len_in_summary)
, m_len_in_remain(other.m_len_in_remain)
, m_pcontent_encoding_handler(other.m_pcontent_encoding_handler)
, m_state(other.m_state)
, m_chunked_state(other.m_chunked_state)
, m_chunked_cache(other.m_chunked_cache)
, m_auto_connect(other.m_auto_connect)
, m_lock(other.m_lock)
{}

abstract_http_client* clone() const override
{
return new http_simple_client_template(*this);
}

const std::string &get_host() const { return m_host_buff; };
const std::string &get_port() const { return m_port; };

bool set_server(const std::string& address, boost::optional<login> user, ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect)
{
http::url_content parsed{};
const bool r = parse_url(address, parsed);
CHECK_AND_ASSERT_MES(r, false, "failed to parse url: " << address);
set_server(std::move(parsed.host), std::to_string(parsed.port), std::move(user), std::move(ssl_options));
return true;
}
using abstract_http_client::set_server;

void set_server(std::string host, std::string port, boost::optional<login> user, ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect)
void set_server(std::string host, std::string port, boost::optional<login> user, ssl_options_t ssl_options = ssl_support_t::e_ssl_support_autodetect) override
{
CRITICAL_REGION_LOCAL(m_lock);
disconnect();
m_host_buff = std::move(host);
m_port = std::move(port);
m_auth = user ? http_client_auth{std::move(*user)} : http_client_auth{};
m_auth = user ? http_client_auth{std::move(*user)} : http_client_auth{};
m_net_client.set_ssl(std::move(ssl_options));
}

void set_auto_connect(bool auto_connect)
void set_auto_connect(bool auto_connect) override
{
m_auto_connect = auto_connect;
}
Expand All @@ -330,25 +218,25 @@ namespace net_utils
m_net_client.set_connector(std::move(connector));
}

bool connect(std::chrono::milliseconds timeout)
bool connect(std::chrono::milliseconds timeout) override
{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.connect(m_host_buff, m_port, timeout);
}
//---------------------------------------------------------------------------
bool disconnect()
bool disconnect() override
{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.disconnect();
}
//---------------------------------------------------------------------------
bool is_connected(bool *ssl = NULL)
bool is_connected(bool *ssl = NULL) override
{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.is_connected(ssl);
}
//---------------------------------------------------------------------------
virtual bool handle_target_data(std::string& piece_of_transfer)
virtual bool handle_target_data(std::string& piece_of_transfer) override
{
CRITICAL_REGION_LOCAL(m_lock);
m_response_info.m_body += piece_of_transfer;
Expand All @@ -361,15 +249,14 @@ namespace net_utils
return true;
}
//---------------------------------------------------------------------------
inline
bool invoke_get(const boost::string_ref uri, std::chrono::milliseconds timeout, const std::string& body = std::string(), const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list())
inline bool invoke_get(const boost::string_ref uri, std::chrono::milliseconds timeout, const std::string& body = std::string(), const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) override
{
CRITICAL_REGION_LOCAL(m_lock);
return invoke(uri, "GET", body, timeout, ppresponse_info, additional_params);
}

//---------------------------------------------------------------------------
inline bool invoke(const boost::string_ref uri, const boost::string_ref method, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list())
inline bool invoke(const boost::string_ref uri, const boost::string_ref method, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) override
{
CRITICAL_REGION_LOCAL(m_lock);
if(!is_connected())
Expand Down Expand Up @@ -442,7 +329,7 @@ namespace net_utils
return false;
}
//---------------------------------------------------------------------------
inline bool invoke_post(const boost::string_ref uri, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list())
inline bool invoke_post(const boost::string_ref uri, const std::string& body, std::chrono::milliseconds timeout, const http_response_info** ppresponse_info = NULL, const fields_list& additional_params = fields_list()) override
{
CRITICAL_REGION_LOCAL(m_lock);
return invoke(uri, "POST", body, timeout, ppresponse_info, additional_params);
Expand All @@ -456,12 +343,12 @@ namespace net_utils
return handle_reciev(timeout);
}
//---------------------------------------------------------------------------
uint64_t get_bytes_sent() const
uint64_t get_bytes_sent() const override
{
return m_net_client.get_bytes_sent();
}
//---------------------------------------------------------------------------
uint64_t get_bytes_received() const
uint64_t get_bytes_received() const override
{
return m_net_client.get_bytes_received();
}
Expand Down
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