Added template specification.

[stg.git] / projects / stargazer / plugins / configuration / sgconfig / conn.cpp

diff --git a/projects/stargazer/plugins/configuration/sgconfig/conn.cpp b/projects/stargazer/plugins/configuration/sgconfig/conn.cpp
index 718e7c565af929dfd9359d65ee56d263fc9e7b7b..c792125ea35e3eb42f4c14923123adaa095f034d 100644 (file)
--- a/projects/stargazer/plugins/configuration/sgconfig/conn.cpp
+++ b/projects/stargazer/plugins/configuration/sgconfig/conn.cpp
@@ -20,26 +20,16 @@
 
 #include "conn.h"
 
 
 #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/admins.h"

-#include "stg/users.h"
-#include "stg/tariffs.h"

 #include "stg/admin.h"
 #include "stg/admin.h"

+#include "stg/logger.h"

 #include "stg/blowfish.h"
 #include "stg/bfstream.h"
 #include "stg/common.h"
 
 #include <cassert>
 #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>
 
 #include <unistd.h>
 #include <sys/socket.h>


@@ -54,15 +44,11 @@ const char Conn::ERR_LOGIN[] = "ERLG";
 const char Conn::OK_LOGINS[] = "OKLS";
 const char Conn::ERR_LOGINS[] = "ERLS";
 
 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,
+           PLUGIN_LOGGER & logger)
+    : m_registry(registry),

       m_admins(admins),
       m_admins(admins),

-      m_users(users),
-      m_tariffs(tariffs),

       m_admin(NULL),
       m_sock(sock),
       m_addr(addr),
       m_admin(NULL),
       m_sock(sock),
       m_addr(addr),


@@ -73,7 +59,13 @@ Conn::Conn(const SETTINGS & settings,
       m_buffer(m_header),
       m_bufferSize(sizeof(m_header)),
       m_stream(NULL),
       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)
       m_dataState(false, *this)

+#endif

 {
     if (m_xmlParser == NULL)
         throw Error("Failed to create XML parser.");
 {
     if (m_xmlParser == NULL)
         throw Error("Failed to create XML parser.");


@@ -81,28 +73,6 @@ Conn::Conn(const SETTINGS & settings,
     XML_ParserReset(m_xmlParser, NULL);
     XML_SetElementHandler(m_xmlParser, ParseXMLStart, ParseXMLEnd);
     XML_SetUserData(m_xmlParser, this);
     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()
 }
 
 Conn::~Conn()


@@ -110,9 +80,6 @@ Conn::~Conn()
     shutdown(m_sock, SHUT_RDWR);
     close(m_sock);
 
     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);
 }
 
     XML_ParserFree(m_xmlParser);
 }
 


@@ -121,26 +88,42 @@ bool Conn::Read()
     ssize_t res = read(m_sock, m_buffer, m_bufferSize);
     if (res < 0)
     {
     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;
     }
         return false;
     }

+#ifdef DUMPCRYPTO
+    m_dumper.write(m_buffer, res);
+#endif

     m_bufferSize -= res;
     m_bufferSize -= res;

+    m_buffer = static_cast<char*>(m_buffer) + res;

     return HandleBuffer(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)
 }
 
 bool Conn::HandleBuffer(size_t size)


@@ -166,21 +149,24 @@ bool Conn::HandleHeader()
 {
     if (strncmp(m_header, STG_HEADER, sizeof(m_header)) != 0)
     {
 {
     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);
         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.
     {
 }
 
 bool Conn::HandleLogin()
 {
     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_state = ERROR;
         return false;
     }


@@ -188,7 +174,7 @@ bool Conn::HandleLogin()
     m_state = CRYPTO_LOGIN;
     m_buffer = m_cryptoLogin;
     m_bufferSize = sizeof(m_cryptoLogin);
     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()
 }
 
 bool Conn::HandleCryptoLogin()


@@ -200,7 +186,8 @@ bool Conn::HandleCryptoLogin()
 
     if (strncmp(m_login, login, sizeof(login)) != 0)
     {
 
     if (strncmp(m_login, login, sizeof(login)) != 0)
     {

-        // TODO: log it
+        Log(__FILE__, "Attempt to connect with wrong password from " + m_admin->GetLogin() + "@" + endpoint() + ".");
+        WriteAnswer(ERR_LOGINS, sizeof(ERR_LOGINS) - 1); // Without \0

         m_state = ERROR;
         return false;
     }
         m_state = ERROR;
         return false;
     }


@@ -209,12 +196,13 @@ bool Conn::HandleCryptoLogin()
     m_buffer = m_data;
     m_bufferSize = sizeof(m_data);
     m_stream = new STG::DECRYPT_STREAM(m_admin->GetPassword(), DataCallback, &m_dataState);
     m_buffer = m_data;
     m_bufferSize = sizeof(m_data);
     m_stream = new STG::DECRYPT_STREAM(m_admin->GetPassword(), DataCallback, &m_dataState);

-    return true;
+    return WriteAnswer(OK_LOGINS, sizeof(OK_LOGINS) - 1); // Without \0

 }
 
 bool Conn::HandleData(size_t size)
 {
 }
 
 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();
 }
 
     return m_stream->IsOk();
 }
 


@@ -223,18 +211,34 @@ bool Conn::DataCallback(const void * block, size_t size, void * data)
     assert(data != NULL);
     DataState& state = *static_cast<DataState *>(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)
+    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->GetLogin() + "@" + 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);
                   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;
     }
 
         return false;
     }
 

+    if (state.final)
+    {
+        if (!state.conn.WriteResponse())
+        {
+            state.conn.Log(__FILE__, "Failed to write response to " + state.conn.m_admin->GetLogin() + "@" + state.conn.endpoint() + ".");
+            state.conn.m_state = ERROR;
+            return false;
+        }
+        state.conn.m_state = DONE;
+    }
+

     return true;
 }
 
     return true;
 }
 


@@ -248,7 +252,7 @@ void Conn::ParseXMLStart(void * data, const char * el, const char ** attr)
 
     if (conn.m_parser == NULL)
     {
 
     if (conn.m_parser == NULL)
     {

-        // TODO: log it
+        conn.Log(__FILE__, "Received unknown command '" + std::string(el) + "' from " + conn.m_admin->GetLogin() + "@" + conn.endpoint() + ".");

         conn.m_state = ERROR;
         return;
     }
         conn.m_state = ERROR;
         return;
     }


@@ -263,10 +267,36 @@ void Conn::ParseXMLEnd(void * data, const char * el)
 
     if (conn.m_parser == NULL)
     {
 
     if (conn.m_parser == NULL)
     {

-        // TODO: log it
+        // No need to log it.

         conn.m_state = ERROR;
         return;
     }
 
     conn.m_parser->End(data, el);
 }
         conn.m_state = ERROR;
         return;
     }
 
     conn.m_parser->End(data, el);
 }

+
+bool Conn::WriteResponse()
+{
+    STG::ENCRYPT_STREAM stream(m_admin->GetPassword(), WriteCallback, this);
+    std::string answer;
+    if (m_parser != NULL)
+        answer = m_parser->GetAnswer();
+    else
+        answer = "<Error result=\"Unknown command.\"/>";
+    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);
+}