#include "conn.h"
-#include "parser.h"
-
-#include "parser_server_info.h"
-#include "parser_admins.h"
-#include "parser_tariffs.h"
-#include "parser_users.h"
-#include "parser_message.h"
-#include "parser_auth_by.h"
-#include "parser_user_info.h"
-
-#include "stg/settings.h"
#include "stg/admins.h"
-#include "stg/users.h"
-#include "stg/tariffs.h"
#include "stg/admin.h"
+#include "stg/logger.h"
#include "stg/blowfish.h"
#include "stg/bfstream.h"
#include "stg/common.h"
#include <cassert>
+#include <cstring>
+#include <cerrno>
#include <unistd.h>
#include <sys/socket.h>
const char Conn::OK_LOGINS[] = "OKLS";
const char Conn::ERR_LOGINS[] = "ERLS";
-Conn::Conn(const SETTINGS & settings,
- ADMINS & admins,
- USERS & users,
- TARIFFS & tariffs,
- int sock, const sockaddr_in& addr)
- : m_settings(settings),
+Conn::Conn(const BASE_PARSER::REGISTRY & registry,
+ Admins & admins, int sock, const sockaddr_in& addr,
+ PluginLogger & logger)
+ : m_registry(registry),
m_admins(admins),
- m_users(users),
- m_tariffs(tariffs),
m_admin(NULL),
m_sock(sock),
m_addr(addr),
m_buffer(m_header),
m_bufferSize(sizeof(m_header)),
m_stream(NULL),
+ m_logger(logger),
+#ifdef DUMPCRYPTO
+ m_dataState(false, *this),
+ m_dumper(endpoint())
+#else
m_dataState(false, *this)
+#endif
{
if (m_xmlParser == NULL)
throw Error("Failed to create XML parser.");
XML_ParserReset(m_xmlParser, NULL);
XML_SetElementHandler(m_xmlParser, ParseXMLStart, ParseXMLEnd);
XML_SetUserData(m_xmlParser, this);
-
- /*m_parsers.push_back(new STG::PARSER::GET_SERVER_INFO(m_settings, m_users, m_tariffs));
-
- m_parsers.push_back(new PARSER_GET_USERS);
- m_parsers.push_back(new PARSER_GET_USER);
- m_parsers.push_back(new PARSER_CHG_USER);
- m_parsers.push_back(new PARSER_ADD_USER);
- m_parsers.push_back(new PARSER_DEL_USER);
- m_parsers.push_back(new PARSER_CHECK_USER);
- m_parsers.push_back(new PARSER_SEND_MESSAGE);
- m_parsers.push_back(new PARSER_AUTH_BY);
- m_parsers.push_back(new PARSER_USER_INFO);
-
- m_parsers.push_back(new PARSER_GET_TARIFFS);
- m_parsers.push_back(new PARSER_ADD_TARIFF);
- m_parsers.push_back(new PARSER_DEL_TARIFF);
- m_parsers.push_back(new PARSER_CHG_TARIFF);
-
- m_parsers.push_back(new PARSER_GET_ADMINS);
- m_parsers.push_back(new PARSER_CHG_ADMIN);
- m_parsers.push_back(new PARSER_DEL_ADMIN);
- m_parsers.push_back(new PARSER_ADD_ADMIN);*/
}
Conn::~Conn()
shutdown(m_sock, SHUT_RDWR);
close(m_sock);
- /*std::map<std::string, BASE_PARSER *>::iterator it(m_parsers.begin());
- for (; it != m_parsers.end(); ++it)
- delete it->second;*/
XML_ParserFree(m_xmlParser);
+
+ delete m_stream;
+ delete m_parser;
}
bool Conn::Read()
ssize_t res = read(m_sock, m_buffer, m_bufferSize);
if (res < 0)
{
- // TODO: log it
+ m_state = ERROR;
+ Log(__FILE__, "Failed to read data from " + endpoint() + ". Reason: '" + strerror(errno) + "'");
+ return false;
+ }
+ if (res == 0 && m_state != DATA) // EOF is ok for data.
+ {
+ m_state = ERROR;
+ Log(__FILE__, "Failed to read data from " + endpoint() + ". Unexpected EOF.");
return false;
}
+#ifdef DUMPCRYPTO
+ m_dumper.write(m_buffer, res);
+#endif
m_bufferSize -= res;
+ m_buffer = static_cast<char*>(m_buffer) + res;
return HandleBuffer(res);
}
-BASE_PARSER * Conn::GetParser(const std::string & tag)
+bool Conn::WriteAnswer(const void* buffer, size_t size)
{
- if (strcasecmp(tag.c_str(), "getserverinfo") == 0)
- return new STG::PARSER::GET_SERVER_INFO(*m_admin, m_settings, m_users, m_tariffs);
- if (strcasecmp(tag.c_str(), "getadmins") == 0)
- return new STG::PARSER::GET_ADMINS(*m_admin, m_admins);
- if (strcasecmp(tag.c_str(), "addadmin") == 0)
- return new STG::PARSER::ADD_ADMIN(*m_admin, m_admins);
- if (strcasecmp(tag.c_str(), "deladmin") == 0)
- return new STG::PARSER::DEL_ADMIN(*m_admin, m_admins);
- if (strcasecmp(tag.c_str(), "chgadmin") == 0)
- return new STG::PARSER::CHG_ADMIN(*m_admin, m_admins);
- return NULL;
+ ssize_t res = write(m_sock, buffer, size);
+ if (res < 0)
+ {
+ m_state = ERROR;
+ Log(__FILE__, "Failed to write data to " + endpoint() + ". Reason: '" + strerror(errno) + "'.");
+ return false;
+ }
+ return true;
+}
+
+BASE_PARSER * Conn::GetParser(const std::string & tag) const
+{
+ BASE_PARSER::REGISTRY::const_iterator it = m_registry.find(ToLower(tag));
+ if (it == m_registry.end())
+ return NULL;
+ return it->second->create(*m_admin);
}
bool Conn::HandleBuffer(size_t size)
{
if (strncmp(m_header, STG_HEADER, sizeof(m_header)) != 0)
{
- // TODO: log it
+ Log(__FILE__, "Received invalid header from " + endpoint() + ".");
+ WriteAnswer(ERR_HEADER, sizeof(ERR_HEADER) - 1); // Without \0
m_state = ERROR;
return false;
}
m_state = LOGIN;
m_buffer = m_login;
m_bufferSize = sizeof(m_login);
- return true;
+ return WriteAnswer(OK_HEADER, sizeof(OK_HEADER) - 1); // Without \0
}
bool Conn::HandleLogin()
{
- if (m_admins.Find(m_login, &m_admin)) // ADMINS::Find returns true on error.
+ if (m_admins.find(m_login, &m_admin)) // ADMINS::Find returns true on error.
{
- // TODO: log it
+ std::string login(m_login, strnlen(m_login, sizeof(m_login)));
+ Log(__FILE__, "Received invalid login '" + ToPrintable(login) + "' from " + endpoint() + ".");
+ WriteAnswer(ERR_LOGIN, sizeof(ERR_LOGIN) - 1); // Without \0
m_state = ERROR;
return false;
}
- m_admin->SetIP(IP());
+ m_admin->setIP(IP());
m_state = CRYPTO_LOGIN;
m_buffer = m_cryptoLogin;
m_bufferSize = sizeof(m_cryptoLogin);
- return true;
+ return WriteAnswer(OK_LOGIN, sizeof(OK_LOGIN) - 1); // Without \0
}
bool Conn::HandleCryptoLogin()
{
char login[ADM_LOGIN_LEN + 1];
BLOWFISH_CTX ctx;
- InitContext(m_admin->GetPassword().c_str(), ADM_PASSWD_LEN, &ctx);
+ InitContext(m_admin->password().c_str(), ADM_PASSWD_LEN, &ctx);
DecryptString(login, m_cryptoLogin, ADM_LOGIN_LEN, &ctx);
if (strncmp(m_login, login, sizeof(login)) != 0)
{
- // TODO: log it
+ Log(__FILE__, "Attempt to connect with wrong password from " + m_admin->login() + "@" + endpoint() + ".");
+ WriteAnswer(ERR_LOGINS, sizeof(ERR_LOGINS) - 1); // Without \0
m_state = ERROR;
return false;
}
m_state = DATA;
m_buffer = m_data;
m_bufferSize = sizeof(m_data);
- m_stream = new STG::DECRYPT_STREAM(m_admin->GetPassword(), DataCallback, &m_dataState);
- return true;
+ m_stream = new STG::DECRYPT_STREAM(m_admin->password(), DataCallback, &m_dataState);
+ return WriteAnswer(OK_LOGINS, sizeof(OK_LOGINS) - 1); // Without \0
}
bool Conn::HandleData(size_t size)
{
- m_stream->Put(m_buffer, size, size == 0 || memchr(m_buffer, 0, size) != NULL);
+ m_stream->Put(m_data, size, size == 0 || memchr(m_data, 0, size) != NULL);
+ m_buffer = m_data;
return m_stream->IsOk();
}
assert(data != NULL);
DataState& state = *static_cast<DataState *>(data);
- if (XML_Parse(state.conn.m_xmlParser,
- static_cast<const char *>(block),
- size, state.final) == XML_STATUS_ERROR)
+ const char * xml = static_cast<const char *>(block);
+ size_t length = strnlen(xml, size);
+
+ state.final = state.final || length < size || size == 0;
+
+ if (XML_Parse(state.conn.m_xmlParser, xml, length, state.final) == XML_STATUS_ERROR)
{
- // TODO: log it
- printfd(__FILE__, "XML parse error at line %d, %d: %s. Is final: %d",
+ state.conn.Log(__FILE__, "Received invalid XML from " + state.conn.m_admin->login() + "@" + state.conn.endpoint() + ".");
+ printfd(__FILE__, "XML parse error at line %d, %d: %s. Is final: %d\n",
static_cast<int>(XML_GetCurrentLineNumber(state.conn.m_xmlParser)),
static_cast<int>(XML_GetCurrentColumnNumber(state.conn.m_xmlParser)),
XML_ErrorString(XML_GetErrorCode(state.conn.m_xmlParser)), (int)state.final);
+ printfd(__FILE__, "Data block: '%s' of size %d\n", xml, length);
+ state.conn.m_state = ERROR;
return false;
}
+ if (state.final)
+ {
+ if (!state.conn.WriteResponse())
+ {
+ state.conn.Log(__FILE__, "Failed to write response to " + state.conn.m_admin->login() + "@" + state.conn.endpoint() + ".");
+ state.conn.m_state = ERROR;
+ return false;
+ }
+ state.conn.m_state = DONE;
+ }
+
return true;
}
if (conn.m_parser == NULL)
{
- // TODO: log it
+ conn.Log(__FILE__, "Received unknown command '" + std::string(el) + "' from " + conn.m_admin->login() + "@" + conn.endpoint() + ".");
conn.m_state = ERROR;
return;
}
if (conn.m_parser == NULL)
{
- // TODO: log it
+ // No need to log it.
conn.m_state = ERROR;
return;
}
conn.m_parser->End(data, el);
}
+
+bool Conn::WriteResponse()
+{
+ STG::ENCRYPT_STREAM stream(m_admin->password(), WriteCallback, this);
+ std::string answer;
+ if (m_parser != NULL)
+ answer = m_parser->GetAnswer();
+ else
+ answer = "<Error result=\"Unknown command.\"/>";
+ delete m_parser;
+ m_parser = NULL;
+ printfd(__FILE__, "Writing %d bytes of answer.\n", answer.length());
+ stream.Put(answer.c_str(), answer.length() + 1 /* including \0 */, true /* final */);
+ return stream.IsOk();
+}
+
+bool Conn::WriteCallback(const void * block, size_t size, void * data)
+{
+ assert(data != NULL);
+ Conn & conn = *static_cast<Conn *>(data);
+ return WriteAll(conn.m_sock, block, size);;
+}
+
+void Conn::Log(const char * file, const std::string & message)
+{
+ printfd(file, "%s\n", message.c_str());
+ m_logger(message);
+}
git.stg.codes / stg.git / blobdiff