monero/contrib/epee/include/net/http_client.h

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// Copyright (c) 2006-2013, Andrey N. Sabelnikov, www.sabelnikov.net
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// 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.
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//
// 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.
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//
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#pragma once
#include <boost/shared_ptr.hpp>
#include <boost/regex.hpp>
#include <boost/lexical_cast.hpp>
#include <boost/optional/optional.hpp>
#include <boost/utility/string_ref.hpp>
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//#include <mbstring.h>
#include <algorithm>
#include <cctype>
#include <functional>
#include "net_helper.h"
#include "http_client_base.h"
#ifdef HTTP_ENABLE_GZIP
#include "gzip_encoding.h"
#endif
#include "string_tools.h"
#include "reg_exp_definer.h"
#include "http_base.h"
#include "http_auth.h"
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#include "to_nonconst_iterator.h"
#include "net_parse_helpers.h"
//#include "shlwapi.h"
//#pragma comment(lib, "shlwapi.lib")
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
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#undef MONERO_DEFAULT_LOG_CATEGORY
#define MONERO_DEFAULT_LOG_CATEGORY "net.http"
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extern epee::critical_section gregexp_lock;
namespace epee
{
namespace net_utils
{
using namespace std;
/*struct url
{
public:
void parse(const std::string& url_s)
{
const string prot_end("://");
string::const_iterator prot_i = search(url_s.begin(), url_s.end(),
prot_end.begin(), prot_end.end());
protocol_.reserve(distance(url_s.begin(), prot_i));
transform(url_s.begin(), prot_i,
back_inserter(protocol_),
ptr_fun<int,int>(tolower)); // protocol is icase
if( prot_i == url_s.end() )
return;
advance(prot_i, prot_end.length());
string::const_iterator path_i = find(prot_i, url_s.end(), '/');
host_.reserve(distance(prot_i, path_i));
transform(prot_i, path_i,
back_inserter(host_),
ptr_fun<int,int>(tolower)); // host is icase
string::const_iterator query_i = find(path_i, url_s.end(), '?');
path_.assign(path_i, query_i);
if( query_i != url_s.end() )
++query_i;
query_.assign(query_i, url_s.end());
}
std::string protocol_;
std::string host_;
std::string path_;
std::string query_;
};*/
//---------------------------------------------------------------------------
static inline const char* get_hex_vals()
{
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static const char hexVals[16] = {'0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F'};
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return hexVals;
}
static inline const char* get_unsave_chars()
{
//static char unsave_chars[] = "\"<>%\\^[]`+$,@:;/!#?=&";
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static const char unsave_chars[] = "\"<>%\\^[]`+$,@:;!#&";
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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);
}
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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;
}
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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
{
class http_simple_client: public i_target_handler
{
private:
enum reciev_machine_state
{
reciev_machine_state_header,
reciev_machine_state_body_content_len,
reciev_machine_state_body_connection_close,
reciev_machine_state_body_chunked,
reciev_machine_state_done,
reciev_machine_state_error
};
enum chunked_state{
http_chunked_state_chunk_head,
http_chunked_state_chunk_body,
http_chunked_state_done,
http_chunked_state_undefined
};
blocked_mode_client m_net_client;
std::string m_host_buff;
std::string m_port;
http_client_auth m_auth;
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std::string m_header_cache;
http_response_info m_response_info;
size_t m_len_in_summary;
size_t m_len_in_remain;
//std::string* m_ptarget_buffer;
boost::shared_ptr<i_sub_handler> m_pcontent_encoding_handler;
reciev_machine_state m_state;
chunked_state m_chunked_state;
std::string m_chunked_cache;
critical_section m_lock;
public:
explicit http_simple_client()
: i_target_handler()
, m_net_client()
, m_host_buff()
, m_port()
, m_auth()
, m_header_cache()
, m_response_info()
, m_len_in_summary(0)
, m_len_in_remain(0)
, m_pcontent_encoding_handler(nullptr)
, m_state()
, m_chunked_state()
, m_chunked_cache()
, m_lock()
{}
bool set_server(const std::string& address, boost::optional<login> user)
{
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));
return true;
}
void set_server(std::string host, std::string port, boost::optional<login> user)
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{
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{};
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}
bool connect(std::chrono::milliseconds timeout)
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{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.connect(m_host_buff, m_port, timeout);
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}
//---------------------------------------------------------------------------
bool disconnect()
{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.disconnect();
}
//---------------------------------------------------------------------------
bool is_connected()
{
CRITICAL_REGION_LOCAL(m_lock);
return m_net_client.is_connected();
}
//---------------------------------------------------------------------------
virtual bool handle_target_data(std::string& piece_of_transfer)
{
CRITICAL_REGION_LOCAL(m_lock);
m_response_info.m_body += piece_of_transfer;
piece_of_transfer.clear();
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())
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{
CRITICAL_REGION_LOCAL(m_lock);
return invoke(uri, "GET", body, timeout, ppresponse_info, additional_params);
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}
//---------------------------------------------------------------------------
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())
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{
CRITICAL_REGION_LOCAL(m_lock);
if(!is_connected())
{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MDEBUG("Reconnecting...");
if(!connect(timeout))
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{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MDEBUG("Failed to connect to " << m_host_buff << ":" << m_port);
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return false;
}
}
std::string req_buff{};
req_buff.reserve(2048);
req_buff.append(method.data(), method.size()).append(" ").append(uri.data(), uri.size()).append(" HTTP/1.1\r\n");
add_field(req_buff, "Host", m_host_buff);
add_field(req_buff, "Content-Length", std::to_string(body.size()));
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//handle "additional_params"
for(const auto& field : additional_params)
add_field(req_buff, field);
for (unsigned sends = 0; sends < 2; ++sends)
{
const std::size_t initial_size = req_buff.size();
const auto auth = m_auth.get_auth_field(method, uri);
if (auth)
add_field(req_buff, *auth);
req_buff += "\r\n";
//--
bool res = m_net_client.send(req_buff, timeout);
CHECK_AND_ASSERT_MES(res, false, "HTTP_CLIENT: Failed to SEND");
if(body.size())
res = m_net_client.send(body, timeout);
CHECK_AND_ASSERT_MES(res, false, "HTTP_CLIENT: Failed to SEND");
m_response_info.clear();
m_state = reciev_machine_state_header;
if (!handle_reciev(timeout))
return false;
if (m_response_info.m_response_code != 401)
{
if(ppresponse_info)
*ppresponse_info = std::addressof(m_response_info);
return true;
}
switch (m_auth.handle_401(m_response_info))
{
case http_client_auth::kSuccess:
break;
case http_client_auth::kBadPassword:
sends = 2;
break;
default:
case http_client_auth::kParseFailure:
LOG_ERROR("Bad server response for authentication");
return false;
}
req_buff.resize(initial_size); // rollback for new auth generation
}
LOG_ERROR("Client has incorrect username/password for server requiring authentication");
return false;
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}
//---------------------------------------------------------------------------
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())
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{
CRITICAL_REGION_LOCAL(m_lock);
return invoke(uri, "POST", body, timeout, ppresponse_info, additional_params);
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}
private:
//---------------------------------------------------------------------------
inline bool handle_reciev(std::chrono::milliseconds timeout)
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{
CRITICAL_REGION_LOCAL(m_lock);
bool keep_handling = true;
bool need_more_data = true;
std::string recv_buffer;
while(keep_handling)
{
if(need_more_data)
{
if(!m_net_client.recv(recv_buffer, timeout))
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{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MERROR("Unexpected recv fail");
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m_state = reciev_machine_state_error;
}
if(!recv_buffer.size())
{
//connection is going to be closed
if(reciev_machine_state_body_connection_close != m_state)
{
m_state = reciev_machine_state_error;
}
}
need_more_data = false;
}
switch(m_state)
{
case reciev_machine_state_header:
keep_handling = handle_header(recv_buffer, need_more_data);
break;
case reciev_machine_state_body_content_len:
keep_handling = handle_body_content_len(recv_buffer, need_more_data);
break;
case reciev_machine_state_body_connection_close:
keep_handling = handle_body_connection_close(recv_buffer, need_more_data);
break;
case reciev_machine_state_body_chunked:
keep_handling = handle_body_body_chunked(recv_buffer, need_more_data);
break;
case reciev_machine_state_done:
keep_handling = false;
break;
case reciev_machine_state_error:
keep_handling = false;
break;
}
}
m_header_cache.clear();
if(m_state != reciev_machine_state_error)
{
if(m_response_info.m_header_info.m_connection.size() && !string_tools::compare_no_case("close", m_response_info.m_header_info.m_connection))
disconnect();
return true;
}
else
{
LOG_PRINT_L3("Returning false because of wrong state machine. state: " << m_state);
return false;
}
}
//---------------------------------------------------------------------------
inline
bool handle_header(std::string& recv_buff, bool& need_more_data)
{
CRITICAL_REGION_LOCAL(m_lock);
if(!recv_buff.size())
{
LOG_ERROR("Connection closed at handle_header");
m_state = reciev_machine_state_error;
return false;
}
m_header_cache += recv_buff;
recv_buff.clear();
std::string::size_type pos = m_header_cache.find("\r\n\r\n");
if(pos != std::string::npos)
{
recv_buff.assign(m_header_cache.begin()+pos+4, m_header_cache.end());
m_header_cache.erase(m_header_cache.begin()+pos+4, m_header_cache.end());
analize_cached_header_and_invoke_state();
m_header_cache.clear();
if(!recv_buff.size() && (m_state != reciev_machine_state_error && m_state != reciev_machine_state_done))
need_more_data = true;
return true;
}else
need_more_data = true;
return true;
}
//---------------------------------------------------------------------------
inline
bool handle_body_content_len(std::string& recv_buff, bool& need_more_data)
{
CRITICAL_REGION_LOCAL(m_lock);
if(!recv_buff.size())
{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MERROR("Warning: Content-Len mode, but connection unexpectedly closed");
2014-03-03 23:07:58 +01:00
m_state = reciev_machine_state_done;
return true;
}
CHECK_AND_ASSERT_MES(m_len_in_remain >= recv_buff.size(), false, "m_len_in_remain >= recv_buff.size()");
m_len_in_remain -= recv_buff.size();
m_pcontent_encoding_handler->update_in(recv_buff);
if(m_len_in_remain == 0)
m_state = reciev_machine_state_done;
else
need_more_data = true;
return true;
}
//---------------------------------------------------------------------------
inline
bool handle_body_connection_close(std::string& recv_buff, bool& need_more_data)
{
CRITICAL_REGION_LOCAL(m_lock);
if(!recv_buff.size())
{
m_state = reciev_machine_state_done;
return true;
}
need_more_data = true;
m_pcontent_encoding_handler->update_in(recv_buff);
return true;
}
//---------------------------------------------------------------------------
inline bool is_hex_symbol(char ch)
{
if( (ch >= '0' && ch <='9')||(ch >= 'A' && ch <='F')||(ch >= 'a' && ch <='f'))
return true;
else
return false;
}
//---------------------------------------------------------------------------
inline
bool get_len_from_chunk_head(const std::string &chunk_head, size_t& result_size)
{
std::stringstream str_stream;
str_stream << std::hex;
if(!(str_stream << chunk_head && str_stream >> result_size))
return false;
return true;
}
//---------------------------------------------------------------------------
inline
bool get_chunk_head(std::string& buff, size_t& chunk_size, bool& is_matched)
{
is_matched = false;
size_t offset = 0;
for(std::string::iterator it = buff.begin(); it!= buff.end(); it++, offset++)
{
if(!is_hex_symbol(*it))
{
if(*it == '\r' || *it == ' ' )
{
offset--;
continue;
}
else if(*it == '\n')
{
std::string chunk_head = buff.substr(0, offset);
if(!get_len_from_chunk_head(chunk_head, chunk_size))
return false;
if(0 == chunk_size)
{
//Here is a small confusion
2016-01-25 13:42:44 +01:00
//In brief - if the chunk is the last one we need to get terminating sequence
2014-03-03 23:07:58 +01:00
//along with the cipher, generally in the "ddd\r\n\r\n" form
for(it++;it != buff.end(); it++)
{
if('\r' == *it)
continue;
else if('\n' == *it)
break;
else
{
LOG_ERROR("http_stream_filter: Wrong last chunk terminator");
return false;
}
}
if(it == buff.end())
return true;
}
buff.erase(buff.begin(), ++it);
is_matched = true;
return true;
}
else
return false;
}
}
return true;
}
//---------------------------------------------------------------------------
inline
bool handle_body_body_chunked(std::string& recv_buff, bool& need_more_data)
{
CRITICAL_REGION_LOCAL(m_lock);
if(!recv_buff.size())
{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MERROR("Warning: CHUNKED mode, but connection unexpectedly closed");
2014-03-03 23:07:58 +01:00
m_state = reciev_machine_state_done;
return true;
}
m_chunked_cache += recv_buff;
recv_buff.clear();
bool is_matched = false;
while(true)
{
if(!m_chunked_cache.size())
{
need_more_data = true;
break;
}
switch(m_chunked_state)
{
case http_chunked_state_chunk_head:
if(m_chunked_cache[0] == '\n' || m_chunked_cache[0] == '\r')
{
//optimize a bit
if(m_chunked_cache[0] == '\r' && m_chunked_cache.size()>1 && m_chunked_cache[1] == '\n')
m_chunked_cache.erase(0, 2);
else
m_chunked_cache.erase(0, 1);
break;
}
if(!get_chunk_head(m_chunked_cache, m_len_in_remain, is_matched))
{
LOG_ERROR("http_stream_filter::handle_chunked(*) Failed to get length from chunked head:" << m_chunked_cache);
m_state = reciev_machine_state_error;
return false;
}
if(!is_matched)
{
need_more_data = true;
return true;
}else
{
m_chunked_state = http_chunked_state_chunk_body;
if(m_len_in_remain == 0)
{//last chunk, let stop the stream and fix the chunk queue.
m_state = reciev_machine_state_done;
return true;
}
m_chunked_state = http_chunked_state_chunk_body;
break;
}
break;
case http_chunked_state_chunk_body:
{
std::string chunk_body;
if(m_len_in_remain >= m_chunked_cache.size())
{
m_len_in_remain -= m_chunked_cache.size();
chunk_body.swap(m_chunked_cache);
}else
{
chunk_body.assign(m_chunked_cache, 0, m_len_in_remain);
m_chunked_cache.erase(0, m_len_in_remain);
m_len_in_remain = 0;
}
m_pcontent_encoding_handler->update_in(chunk_body);
if(!m_len_in_remain)
m_chunked_state = http_chunked_state_chunk_head;
}
break;
case http_chunked_state_done:
m_state = reciev_machine_state_done;
return true;
case http_chunked_state_undefined:
default:
LOG_ERROR("http_stream_filter::handle_chunked(): Wrong state" << m_chunked_state);
return false;
}
}
return true;
}
//---------------------------------------------------------------------------
inline
bool parse_header(http_header_info& body_info, const std::string& m_cache_to_process)
{
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MTRACE("http_stream_filter::parse_cached_header(*)");
2014-03-03 23:07:58 +01:00
STATIC_REGEXP_EXPR_1(rexp_mach_field,
"\n?((Connection)|(Referer)|(Content-Length)|(Content-Type)|(Transfer-Encoding)|(Content-Encoding)|(Host)|(Cookie)|(User-Agent)"
// 12 3 4 5 6 7 8 9 10
2014-03-03 23:07:58 +01:00
"|([\\w-]+?)) ?: ?((.*?)(\r?\n))[^\t ]",
//11 1213 14
2014-03-03 23:07:58 +01:00
boost::regex::icase | boost::regex::normal);
boost::smatch result;
std::string::const_iterator it_current_bound = m_cache_to_process.begin();
std::string::const_iterator it_end_bound = m_cache_to_process.end();
//lookup all fields and fill well-known fields
while( boost::regex_search( it_current_bound, it_end_bound, result, rexp_mach_field, boost::match_default) && result[0].matched)
{
const size_t field_val = 13;
//const size_t field_etc_name = 11;
2014-03-03 23:07:58 +01:00
int i = 2; //start position = 2
if(result[i++].matched)//"Connection"
body_info.m_connection = result[field_val];
else if(result[i++].matched)//"Referrer"
body_info.m_referer = result[field_val];
else if(result[i++].matched)//"Content-Length"
body_info.m_content_length = result[field_val];
else if(result[i++].matched)//"Content-Type"
body_info.m_content_type = result[field_val];
else if(result[i++].matched)//"Transfer-Encoding"
body_info.m_transfer_encoding = result[field_val];
else if(result[i++].matched)//"Content-Encoding"
body_info.m_content_encoding = result[field_val];
else if(result[i++].matched)//"Host"
{ body_info.m_host = result[field_val];
string_tools::trim(body_info.m_host);
}
else if(result[i++].matched)//"Cookie"
body_info.m_cookie = result[field_val];
else if(result[i++].matched)//"User-Agent"
body_info.m_user_agent = result[field_val];
2014-03-03 23:07:58 +01:00
else if(result[i++].matched)//e.t.c (HAVE TO BE MATCHED!)
body_info.m_etc_fields.emplace_back(result[11], result[field_val]);
2014-03-03 23:07:58 +01:00
else
{CHECK_AND_ASSERT_MES(false, false, "http_stream_filter::parse_cached_header() not matched last entry in:"<<m_cache_to_process);}
it_current_bound = result[(int)result.size()-1]. first;
}
return true;
}
inline
bool analize_first_response_line()
{
//First line response, look like this: "HTTP/1.1 200 OK"
STATIC_REGEXP_EXPR_1(rexp_match_first_response_line, "^HTTP/(\\d+).(\\d+) ((\\d)\\d{2})( [^\n]*)?\r?\n", boost::regex::icase | boost::regex::normal);
// 1 2 34 5
//size_t match_len = 0;
boost::smatch result;
if(boost::regex_search( m_header_cache, result, rexp_match_first_response_line, boost::match_default) && result[0].matched)
{
CHECK_AND_ASSERT_MES(result[1].matched&&result[2].matched, false, "http_stream_filter::handle_invoke_reply_line() assert failed...");
m_response_info.m_http_ver_hi = boost::lexical_cast<int>(result[1]);
m_response_info.m_http_ver_lo = boost::lexical_cast<int>(result[2]);
m_response_info.m_response_code = boost::lexical_cast<int>(result[3]);
m_header_cache.erase(to_nonsonst_iterator(m_header_cache, result[0].first), to_nonsonst_iterator(m_header_cache, result[0].second));
return true;
}else
{
LOG_ERROR("http_stream_filter::handle_invoke_reply_line(): Failed to match first response line:" << m_header_cache);
return false;
}
}
inline
bool set_reply_content_encoder()
{
STATIC_REGEXP_EXPR_1(rexp_match_gzip, "^.*?((gzip)|(deflate))", boost::regex::icase | boost::regex::normal);
boost::smatch result; // 12 3
if(boost::regex_search( m_response_info.m_header_info.m_content_encoding, result, rexp_match_gzip, boost::match_default) && result[0].matched)
{
#ifdef HTTP_ENABLE_GZIP
m_pcontent_encoding_handler.reset(new content_encoding_gzip(this, result[3].matched));
#else
m_pcontent_encoding_handler.reset(new do_nothing_sub_handler(this));
LOG_ERROR("GZIP encoding not supported in this build, please add zlib to your project and define HTTP_ENABLE_GZIP");
return false;
#endif
}
else
{
m_pcontent_encoding_handler.reset(new do_nothing_sub_handler(this));
}
return true;
}
inline
bool analize_cached_header_and_invoke_state()
{
m_response_info.clear();
analize_first_response_line();
std::string fake_str; //gcc error workaround
bool res = parse_header(m_response_info.m_header_info, m_header_cache);
CHECK_AND_ASSERT_MES(res, false, "http_stream_filter::analize_cached_reply_header_and_invoke_state(): failed to anilize reply header: " << m_header_cache);
set_reply_content_encoder();
m_len_in_summary = 0;
bool content_len_valid = false;
if(m_response_info.m_header_info.m_content_length.size())
content_len_valid = string_tools::get_xtype_from_string(m_len_in_summary, m_response_info.m_header_info.m_content_length);
if(!m_len_in_summary && ((m_response_info.m_response_code>=100&&m_response_info.m_response_code<200)
|| 204 == m_response_info.m_response_code
|| 304 == m_response_info.m_response_code) )
{//There will be no response body, server will display the local page with error
m_state = reciev_machine_state_done;
return true;
}else if(m_response_info.m_header_info.m_transfer_encoding.size())
{
string_tools::trim(m_response_info.m_header_info.m_transfer_encoding);
if(string_tools::compare_no_case(m_response_info.m_header_info.m_transfer_encoding, "chunked"))
{
LOG_ERROR("Wrong Transfer-Encoding:" << m_response_info.m_header_info.m_transfer_encoding);
m_state = reciev_machine_state_error;
return false;
}
m_state = reciev_machine_state_body_chunked;
m_chunked_state = http_chunked_state_chunk_head;
return true;
}
else if(!m_response_info.m_header_info.m_content_length.empty())
{
//In the response header the length was specified
if(!content_len_valid)
{
LOG_ERROR("http_stream_filter::analize_cached_reply_header_and_invoke_state(): Failed to get_len_from_content_lenght();, m_query_info.m_content_length="<<m_response_info.m_header_info.m_content_length);
m_state = reciev_machine_state_error;
return false;
}
if(!m_len_in_summary)
{
m_state = reciev_machine_state_done;
return true;
}
else
{
m_len_in_remain = m_len_in_summary;
m_state = reciev_machine_state_body_content_len;
return true;
}
}else if(!m_response_info.m_header_info.m_connection.empty() && is_connection_close_field(m_response_info.m_header_info.m_connection))
{ //By indirect signs we suspect that data transfer will end with a connection break
m_state = reciev_machine_state_body_connection_close;
}else if(is_multipart_body(m_response_info.m_header_info, fake_str))
{
m_state = reciev_machine_state_error;
LOG_ERROR("Unsupported MULTIPART BODY.");
return false;
}else
{ //Apparently there are no signs of the form of transfer, will receive data until the connection is closed
m_state = reciev_machine_state_error;
Change logging to easylogging++ This replaces the epee and data_loggers logging systems with a single one, and also adds filename:line and explicit severity levels. Categories may be defined, and logging severity set by category (or set of categories). epee style 0-4 log level maps to a sensible severity configuration. Log files now also rotate when reaching 100 MB. To select which logs to output, use the MONERO_LOGS environment variable, with a comma separated list of categories (globs are supported), with their requested severity level after a colon. If a log matches more than one such setting, the last one in the configuration string applies. A few examples: This one is (mostly) silent, only outputting fatal errors: MONERO_LOGS=*:FATAL This one is very verbose: MONERO_LOGS=*:TRACE This one is totally silent (logwise): MONERO_LOGS="" This one outputs all errors and warnings, except for the "verify" category, which prints just fatal errors (the verify category is used for logs about incoming transactions and blocks, and it is expected that some/many will fail to verify, hence we don't want the spam): MONERO_LOGS=*:WARNING,verify:FATAL Log levels are, in decreasing order of priority: FATAL, ERROR, WARNING, INFO, DEBUG, TRACE Subcategories may be added using prefixes and globs. This example will output net.p2p logs at the TRACE level, but all other net* logs only at INFO: MONERO_LOGS=*:ERROR,net*:INFO,net.p2p:TRACE Logs which are intended for the user (which Monero was using a lot through epee, but really isn't a nice way to go things) should use the "global" category. There are a few helper macros for using this category, eg: MGINFO("this shows up by default") or MGINFO_RED("this is red"), to try to keep a similar look and feel for now. Existing epee log macros still exist, and map to the new log levels, but since they're used as a "user facing" UI element as much as a logging system, they often don't map well to log severities (ie, a log level 0 log may be an error, or may be something we want the user to see, such as an important info). In those cases, I tried to use the new macros. In other cases, I left the existing macros in. When modifying logs, it is probably best to switch to the new macros with explicit levels. The --log-level options and set_log commands now also accept category settings, in addition to the epee style log levels.
2017-01-01 17:34:23 +01:00
MERROR("Undefinded transfer type, consider http_body_transfer_connection_close method. header: " << m_header_cache);
2014-03-03 23:07:58 +01:00
return false;
}
return false;
}
inline
bool is_connection_close_field(const std::string& str)
{
STATIC_REGEXP_EXPR_1(rexp_match_close, "^\\s*close", boost::regex::icase | boost::regex::normal);
boost::smatch result;
if(boost::regex_search( str, result, rexp_match_close, boost::match_default) && result[0].matched)
return true;
else
return false;
}
inline
bool is_multipart_body(const http_header_info& head_info, OUT std::string& boundary)
{
//Check whether this is multi part - if yes, capture boundary immediately
STATIC_REGEXP_EXPR_1(rexp_match_multipart_type, "^\\s*multipart/([\\w\\-]+); boundary=((\"(.*?)\")|(\\\\\"(.*?)\\\\\")|([^\\s;]*))", boost::regex::icase | boost::regex::normal);
boost::smatch result;
if(boost::regex_search(head_info.m_content_type, result, rexp_match_multipart_type, boost::match_default) && result[0].matched)
{
if(result[4].matched)
boundary = result[4];
else if(result[6].matched)
boundary = result[6];
else if(result[7].matched)
boundary = result[7];
else
{
LOG_ERROR("Failed to match boundary in content-type=" << head_info.m_content_type);
return false;
}
return true;
}
else
return false;
return true;
}
};
}
}
2015-01-02 17:52:46 +01:00
}