Added client connection class into sgconfig.

diff --git a/projects/stargazer/plugins/configuration/sgconfig/conn.cpp b/projects/stargazer/plugins/configuration/sgconfig/conn.cpp
new file mode 100644 (file)
index 0000000..718e7c5
--- /dev/null
+++ b/projects/stargazer/plugins/configuration/sgconfig/conn.cpp
@@ -0,0 +1,272 @@
+/*
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#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/blowfish.h"
+#include "stg/bfstream.h"
+#include "stg/common.h"
+
+#include <cassert>
+
+#include <unistd.h>
+#include <sys/socket.h>
+
+using STG::Conn;
+
+const char Conn::STG_HEADER[] = "SG04";
+const char Conn::OK_HEADER[] = "OKHD";
+const char Conn::ERR_HEADER[] = "ERHD";
+const char Conn::OK_LOGIN[] = "OKLG";
+const char Conn::ERR_LOGIN[] = "ERLG";
+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),
+      m_admins(admins),
+      m_users(users),
+      m_tariffs(tariffs),
+      m_admin(NULL),
+      m_sock(sock),
+      m_addr(addr),
+      m_keepAlive(false),
+      m_parser(NULL),
+      m_xmlParser(XML_ParserCreate(NULL)),
+      m_state(HEADER),
+      m_buffer(m_header),
+      m_bufferSize(sizeof(m_header)),
+      m_stream(NULL),
+      m_dataState(false, *this)
+{
+    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);
+}
+
+bool Conn::Read()
+{
+    ssize_t res = read(m_sock, m_buffer, m_bufferSize);
+    if (res < 0)
+    {
+        // TODO: log it
+        return false;
+    }
+    m_bufferSize -= res;
+    return HandleBuffer(res);
+}
+
+BASE_PARSER * Conn::GetParser(const std::string & tag)
+{
+    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;
+}
+
+bool Conn::HandleBuffer(size_t size)
+{
+    if (m_state == DATA)
+        return HandleData(size);
+
+    if (m_bufferSize > 0)
+        return true;
+
+    switch (m_state)
+    {
+        case HEADER: return HandleHeader();
+        case LOGIN: return HandleLogin();
+        case CRYPTO_LOGIN: return HandleCryptoLogin();
+        default: return true;
+    }
+
+    return true;
+}
+
+bool Conn::HandleHeader()
+{
+    if (strncmp(m_header, STG_HEADER, sizeof(m_header)) != 0)
+    {
+        // TODO: log it
+        m_state = ERROR;
+        return false;
+    }
+    m_state = LOGIN;
+    m_buffer = m_login;
+    m_bufferSize = sizeof(m_login);
+    return true;
+}
+
+bool Conn::HandleLogin()
+{
+    if (m_admins.Find(m_login, &m_admin)) // ADMINS::Find returns true on error.
+    {
+        // TODO: log it
+        m_state = ERROR;
+        return false;
+    }
+    m_admin->SetIP(IP());
+    m_state = CRYPTO_LOGIN;
+    m_buffer = m_cryptoLogin;
+    m_bufferSize = sizeof(m_cryptoLogin);
+    return true;
+}
+
+bool Conn::HandleCryptoLogin()
+{
+    char login[ADM_LOGIN_LEN + 1];
+    BLOWFISH_CTX ctx;
+    InitContext(m_admin->GetPassword().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
+        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;
+}
+
+bool Conn::HandleData(size_t size)
+{
+    m_stream->Put(m_buffer, size, size == 0 || memchr(m_buffer, 0, size) != NULL);
+    return m_stream->IsOk();
+}
+
+bool Conn::DataCallback(const void * block, size_t size, void * data)
+{
+    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)
+    {
+        // TODO: log it
+        printfd(__FILE__, "XML parse error at line %d, %d: %s. Is final: %d",
+                  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);
+        return false;
+    }
+
+    return true;
+}
+
+void Conn::ParseXMLStart(void * data, const char * el, const char ** attr)
+{
+    assert(data != NULL);
+    Conn & conn = *static_cast<Conn *>(data);
+
+    if (conn.m_parser == NULL)
+        conn.m_parser = conn.GetParser(el);
+
+    if (conn.m_parser == NULL)
+    {
+        // TODO: log it
+        conn.m_state = ERROR;
+        return;
+    }
+
+    conn.m_parser->Start(data, el, attr);
+}
+
+void Conn::ParseXMLEnd(void * data, const char * el)
+{
+    assert(data != NULL);
+    Conn & conn = *static_cast<Conn *>(data);
+
+    if (conn.m_parser == NULL)
+    {
+        // TODO: log it
+        conn.m_state = ERROR;
+        return;
+    }
+
+    conn.m_parser->End(data, el);
+}

diff --git a/projects/stargazer/plugins/configuration/sgconfig/conn.h b/projects/stargazer/plugins/configuration/sgconfig/conn.h
new file mode 100644 (file)
index 0000000..39a5975
--- /dev/null
+++ b/projects/stargazer/plugins/configuration/sgconfig/conn.h
@@ -0,0 +1,129 @@
+/*
+ *    This program is free software; you can redistribute it and/or modify
+ *    it under the terms of the GNU General Public License as published by
+ *    the Free Software Foundation; either version 2 of the License, or
+ *    (at your option) any later version.
+ *
+ *    This program is distributed in the hope that it will be useful,
+ *    but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *    GNU General Public License for more details.
+ *
+ *    You should have received a copy of the GNU General Public License
+ *    along with this program; if not, write to the Free Software
+ *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ *    Author : Maxim Mamontov <faust@stargazer.dp.ua>
+ */
+
+#ifndef __STG_SGCONFIG_CONN_H__
+#define __STG_SGCONFIG_CONN_H__
+
+#include "stg/os_int.h"
+#include "stg/const.h"
+
+#include <stdexcept>
+#include <string>
+#include <map>
+
+#include <expat.h>
+
+#include <linux/in.h>
+
+class SETTINGS;
+class ADMINS;
+class USERS;
+class TARIFFS;
+class ADMIN;
+class BASE_PARSER;
+
+namespace STG
+{
+
+class DECRYPT_STREAM;
+
+class Conn
+{
+    public:
+        struct Error : public std::runtime_error
+        {
+            Error(const std::string& message) : runtime_error(message.c_str()) {}
+        };
+
+        Conn(const SETTINGS & settings,
+             ADMINS & admins,
+             USERS & users,
+             TARIFFS & tariffs,
+             int sock, const sockaddr_in& addr);
+        ~Conn();
+
+        int Sock() const { return m_sock; }
+        uint32_t IP() const { return *(uint32_t *)(&m_addr.sin_addr); }
+        uint16_t Port() const { return m_addr.sin_port; }
+
+        bool Read();
+
+        bool IsOk() const { return m_state != ERROR; }
+        bool IsKeepAlive() const { return m_keepAlive; }
+
+    private:
+
+        static const char STG_HEADER[5];
+        static const char OK_HEADER[5];
+        static const char ERR_HEADER[5];
+        static const char OK_LOGIN[5];
+        static const char ERR_LOGIN[5];
+        static const char OK_LOGINS[5];
+        static const char ERR_LOGINS[5];
+
+        const SETTINGS & m_settings;
+        ADMINS & m_admins;
+        USERS & m_users;
+        TARIFFS & m_tariffs;
+
+        ADMIN * m_admin;
+
+        int m_sock;
+        sockaddr_in m_addr;
+        bool m_keepAlive;
+
+        BASE_PARSER * m_parser;
+
+        XML_Parser m_xmlParser;
+
+        enum { HEADER, LOGIN, CRYPTO_LOGIN, DATA, ERROR } m_state;
+
+        void * m_buffer;
+        size_t m_bufferSize;
+        char m_header[sizeof(STG_HEADER)];
+        char m_login[ADM_LOGIN_LEN + 1];
+        char m_cryptoLogin[ADM_LOGIN_LEN + 1];
+        char m_data[1024];
+        STG::DECRYPT_STREAM * m_stream;
+
+        BASE_PARSER * GetParser(const std::string & tag);
+
+        bool HandleBuffer(size_t size);
+
+        bool HandleHeader();
+        bool HandleLogin();
+        bool HandleCryptoLogin();
+        bool HandleData(size_t size);
+
+        struct DataState
+        {
+            DataState(bool f, Conn & c) : final(f), conn(c) {}
+            bool final;
+            Conn & conn;
+        } m_dataState;
+
+        static bool DataCallback(const void * block, size_t size, void * data);
+        static void ParseXMLStart(void * data, const char * el, const char ** attr);
+        static void ParseXMLEnd(void * data, const char * el);
+};
+
+}
+
+#endif