+++ /dev/null
-/*
- * 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 : Boris Mikhailenko <stg34@stargazer.dp.ua>
- */
-
-#include "configproto.h"
-
-#include "parser.h"
-
-#include "stg/admins.h"
-#include "stg/logger.h"
-#include "stg/common.h"
-#include "stg/blowfish.h"
-
-#include <cerrno>
-#include <csignal>
-#include <cstring> // strerror
-
-#include <unistd.h> // close
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
-
-#ifndef ENODATA
-// FreeBSD 4.* - suxx
-#define ENODATA -1
-#endif
-
-enum CONF_STATE
- {
- confHdr,
- confLogin,
- confLoginCipher,
- confData
- };
-
-enum
- {
- ans_ok = 0,
- ans_err
- };
-
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::Prepare()
-{
-sigset_t sigmask, oldmask;
-sigemptyset(&sigmask);
-sigaddset(&sigmask, SIGINT);
-sigaddset(&sigmask, SIGTERM);
-sigaddset(&sigmask, SIGUSR1);
-sigaddset(&sigmask, SIGHUP);
-pthread_sigmask(SIG_BLOCK, &sigmask, &oldmask);
-
-listenSocket = socket(PF_INET, SOCK_STREAM, 0);
-
-if (listenSocket < 0)
- {
- errorStr = "Create socket failed.";
- logger("Cannot create a socket: %s", strerror(errno));
- return -1;
- }
-
-struct sockaddr_in listenAddr;
-listenAddr.sin_family = PF_INET;
-listenAddr.sin_port = htons(port);
-listenAddr.sin_addr.s_addr = inet_addr("0.0.0.0");
-
-int lng = 1;
-
-if (0 != setsockopt(listenSocket, SOL_SOCKET, SO_REUSEADDR, &lng, 4))
- {
- errorStr = "Setsockopt failed. " + std::string(strerror(errno));
- logger("setsockopt error: %s", strerror(errno));
- return -1;
- }
-
-if (bind(listenSocket, (struct sockaddr*)&listenAddr, sizeof(listenAddr)) == -1)
- {
- errorStr = "Bind admin socket failed";
- logger("Cannot bind the socket: %s", strerror(errno));
- return -1;
- }
-
-if (listen(listenSocket, 0) == -1)
- {
- errorStr = "Listen admin socket failed";
- logger("Cannot listen the socket: %s", strerror(errno));
- return -1;
- }
-
-errorStr = "";
-nonstop = true;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::Stop()
-{
-nonstop = false;
-shutdown(listenSocket, SHUT_RDWR);
-close(listenSocket);
-//TODO: Idiotism
-struct sockaddr_in addr;
-addr.sin_family = PF_INET;
-addr.sin_port = htons(port);
-addr.sin_addr.s_addr = inet_addr("127.0.0.1");
-
-socklen_t addrLen = sizeof(addr);
-int sock = socket(PF_INET, SOCK_STREAM, 0);
-connect(sock, (sockaddr*)&addr, addrLen);
-shutdown(sock, SHUT_RDWR);
-close(sock);
-//Idiotism end
-return 0;
-}
-//-----------------------------------------------------------------------------
-void CONFIGPROTO::Run()
-{
-while (nonstop)
- {
- state = confHdr;
- struct sockaddr_in outerAddr;
- socklen_t outerAddrLen(sizeof(outerAddr));
- int outerSocket = accept(listenSocket,
- (struct sockaddr*)(&outerAddr),
- &outerAddrLen);
-
- if (!nonstop)
- {
- break;
- }
-
- if (outerSocket < 0)
- {
- logger("accept error: %s", strerror(errno));
- printfd(__FILE__, "accept failed\n");
- continue;
- }
-
- adminIP = *(unsigned int*)&(outerAddr.sin_addr);
-
- if (state == confHdr)
- {
- if (RecvHdr(outerSocket) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (state == confLogin)
- {
- if (SendHdrAnswer(outerSocket, ans_ok) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (RecvLogin(outerSocket) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (state == confLoginCipher)
- {
- if (SendLoginAnswer(outerSocket) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (RecvLoginS(outerSocket) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (state == confData)
- {
- if (SendLoginSAnswer(outerSocket, ans_ok) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- if (RecvData(outerSocket) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- state = confHdr;
- }
- else
- {
- if (SendLoginSAnswer(outerSocket, ans_err) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- WriteLogAccessFailed(adminIP);
- }
- }
- else
- {
- WriteLogAccessFailed(adminIP);
- }
- }
- else
- {
- WriteLogAccessFailed(adminIP);
- if (SendHdrAnswer(outerSocket, ans_err) < 0)
- {
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- continue;
- }
- }
- }
- else
- {
- WriteLogAccessFailed(adminIP);
- }
- printfd(__FILE__, "Successfull connection from %s\n", inet_ntostring(outerAddr.sin_addr.s_addr).c_str());
- shutdown(outerSocket, SHUT_RDWR);
- close(outerSocket);
- }
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::RecvHdr(int sock)
-{
-char buf[sizeof(STG_HEADER)];
-memset(buf, 0, sizeof(STG_HEADER));
-size_t stgHdrLen = sizeof(STG_HEADER) - 1; // Without 0-char
-size_t pos = 0;
-while (pos < stgHdrLen)
- {
- if (!WaitPackets(sock))
- {
- state = confHdr;
- SendError(sock, "Bad request");
- return -1;
- }
- ssize_t ret = recv(sock, &buf[pos], static_cast<int>(stgHdrLen) - static_cast<int>(pos), 0);
- if (ret <= 0)
- {
- if (ret < 0)
- logger("recv error: %s", strerror(errno));
- state = confHdr;
- return -1;
- }
- pos += ret;
- }
-
-if (0 == strncmp(buf, STG_HEADER, strlen(STG_HEADER)))
- {
- state = confLogin;
- return 0;
- }
-else
- {
- SendError(sock, "Bad request");
- }
-
-state = confHdr;
-return -1;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::SendHdrAnswer(int sock, int err)
-{
-if (err)
- {
- if (send(sock, ERR_HEADER, sizeof(ERR_HEADER) - 1, 0) < 0)
- {
- logger("send error: %s", strerror(errno));
- return -1;
- }
- }
-else
- {
- if (send(sock, OK_HEADER, sizeof(OK_HEADER) - 1, 0) < 0)
- {
- logger("send error: %s", strerror(errno));
- return -1;
- }
- }
-
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::RecvLogin(int sock)
-{
-char login[ADM_LOGIN_LEN + 1];
-
-memset(login, 0, ADM_LOGIN_LEN + 1);
-
-size_t pos = 0;
-while (pos < ADM_LOGIN_LEN) {
- if (!WaitPackets(sock))
- {
- state = confHdr;
- return ENODATA;
- }
-
- ssize_t ret = recv(sock, &login[pos], ADM_LOGIN_LEN - static_cast<int>(pos), 0);
-
- if (ret <= 0)
- {
- // Error in network
- logger("recv error: %s", strerror(errno));
- state = confHdr;
- return ENODATA;
- }
-
- pos += ret;
-}
-
-if (admins->Find(login, &currAdmin))
- {
- // Admin not found
- state = confHdr;
- return ENODATA;
- }
-
-currAdmin->SetIP(adminIP);
-adminLogin = login;
-state = confLoginCipher;
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::SendLoginAnswer(int sock)
-{
-if (send(sock, OK_LOGIN, sizeof(OK_LOGIN) - 1, 0) < 0)
- {
- logger("Send OK_LOGIN error in SendLoginAnswer.");
- return -1;
- }
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::RecvLoginS(int sock)
-{
-char loginS[ADM_LOGIN_LEN + 1];
-memset(loginS, 0, ADM_LOGIN_LEN + 1);
-
-size_t pos = 0;
-while (pos < ADM_LOGIN_LEN)
- {
- if (!WaitPackets(sock))
- {
- state = confHdr;
- return ENODATA;
- }
-
- ssize_t ret = recv(sock, &loginS[pos], ADM_LOGIN_LEN - static_cast<int>(pos), 0);
-
- if (ret <= 0)
- {
- // Network error
- printfd(__FILE__, "recv error: '%s'\n", strerror(errno));
- logger("recv error: %s", strerror(errno));
- state = confHdr;
- return ENODATA;
- }
-
- pos += ret;
- }
-
-if (currAdmin->GetLogin().empty())
- {
- state = confHdr;
- return ENODATA;
- }
-
-BLOWFISH_CTX ctx;
-InitContext(currAdmin->GetPassword().c_str(), ADM_PASSWD_LEN, &ctx);
-
-char login[ADM_LOGIN_LEN + 1];
-for (size_t i = 0; i < ADM_LOGIN_LEN / 8; i++)
- DecryptBlock(login + i * 8, loginS + i * 8, &ctx);
-
-if (currAdmin == admins->GetNoAdmin())
- {
- // If there are no admins registered in the system - give access with any password
- state = confData;
- return 0;
- }
-
-if (strncmp(currAdmin->GetLogin().c_str(), login, ADM_LOGIN_LEN) != 0)
- {
- state = confHdr;
- return ENODATA;
- }
-
-state = confData;
-adminPassword = currAdmin->GetPassword();
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::SendLoginSAnswer(int sock, int err)
-{
-if (err)
- {
- if (send(sock, ERR_LOGINS, sizeof(ERR_LOGINS) - 1, 0) < 0)
- {
- logger("send error: %s", strerror(errno));
- return -1;
- }
- }
-else
- {
- if (send(sock, OK_LOGINS, sizeof(OK_LOGINS) - 1, 0) < 0)
- {
- logger("send error: %s", strerror(errno));
- return -1;
- }
- }
-return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::RecvData(int sock)
-{
-requestList.clear();
-BLOWFISH_CTX ctx;
-
-InitContext(currAdmin->GetPassword().c_str(), ADM_PASSWD_LEN, &ctx);
-
-while (1)
- {
- bool done = false;
- char bufferS[8];
- size_t pos = 0;
- while (pos < sizeof(bufferS))
- {
- if (!WaitPackets(sock))
- {
- done = true;
- break;
- }
-
- ssize_t ret = recv(sock, &bufferS[pos], sizeof(bufferS) - static_cast<int>(pos), 0);
- if (ret < 0)
- {
- // Network error
- logger("recv error: %s", strerror(errno));
- printfd(__FILE__, "recv error: '%s'\n", strerror(errno));
- return -1;
- }
-
- if (ret == 0)
- {
- done = true;
- break;
- }
-
- pos += ret;
- }
-
- char buffer[8];
- buffer[7] = 0;
-
- DecryptBlock(buffer, bufferS, &ctx);
- requestList.push_back(std::string(buffer, pos));
-
- if (done || memchr(buffer, 0, pos) != NULL)
- {
- // End of data
- if (ParseCommand())
- return SendError(sock, "Bad command");
- else
- return SendDataAnswer(sock, GetDataAnswer());
- }
- }
-//return 0;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::SendDataAnswer(int sock, const std::string & answer)
-{
-if (answer.empty())
- return 0;
-
-BLOWFISH_CTX ctx;
-InitContext(adminPassword.c_str(), ADM_PASSWD_LEN, &ctx);
-
-std::string::size_type pos = 0;
-std::string::size_type length = answer.length() + 1;
-while (pos < length)
- {
- char buffer[1024];
- std::string::size_type chunkLength = std::min(length - pos, sizeof(buffer));
- EncryptString(buffer, answer.c_str() + pos, chunkLength, &ctx);
- if (send(sock, buffer, (chunkLength & ~7) < chunkLength ? chunkLength + 8 : chunkLength, 0) < 0) // Need to send data adjusted to the 8-byte boundary.
- return -1;
- pos += chunkLength;
- }
-
-return 1;
-}
-//-----------------------------------------------------------------------------
-int CONFIGPROTO::SendError(int sock, const std::string & text)
-{
-return SendDataAnswer(sock, "<Error value=\"" + text + "\"/>");
-}
-//-----------------------------------------------------------------------------
-void CONFIGPROTO::WriteLogAccessFailed(uint32_t ip)
-{
-logger("Admin's connection failed. IP %s", inet_ntostring(ip).c_str());
-}
-//-----------------------------------------------------------------------------
git.stg.codes / stg.git / commitdiff