void server_mainloop( SOCKET server_socket )
{
SOCKET sClientSocket;
int iResult, // system information with error message
iSendResult, // system information with error message after send function
command_code;
MBA_AGENT_RETURN command_result;
CHAR sLogMessage[SZ_MAX_LOG];
CHAR sRecvbuf[SZ_MAX_CMD << 1]; // receive buffer from client
CHAR sCommand_line[SZ_MAX_CMD << 1]; // fully command line
// we allocate two times more space for the string manipulation
// Accept connections
while( true ) {
g_sClientSocket = server_socket;
sprintf_s(sLogMessage, SZ_MAX_LOG, "[SYSTEM] Start to get commands...\r\n\r\n");
write_agent_log(sLogMessage, FALSE);
slen = sizeof(clientaddr);
// Receive until the peer shuts down the connection
do {
ZeroMemory(sRecvbuf, sizeof(sRecvbuf));
iResult = ac_read( sRecvbuf, SZ_MAX_CMD );
if (iResult > 0) {
sprintf_s(sLogMessage, SZ_MAX_LOG, "Bytes received: 0x%08x, Received message: %s\r\n", iResult, sRecvbuf);
write_agent_log(sLogMessage, FALSE);
command_code = identify_command(sRecvbuf);
if (command_code > 0) {
ZeroMemory(sCommand_line, sizeof(sCommand_line));
memcpy(sCommand_line, &sRecvbuf[5], SZ_MAX_CMD - 5);
}
switch (command_code) {
case MBA_CMD_EXEC :
command_result = execute_cmd(sCommand_line);
break;
case MBA_CMD_INVO :
command_result = invoke_cmd(sCommand_line);
break;
case MBA_CMD_EXPO :
command_result = export_cmd(sCommand_line);
break;
case MBA_CMD_IMPO :
command_result = import_cmd(sCommand_line);
break;
case MBA_CMD_LOGF :
command_result = expolog_cmd();
break;
case MBA_CMD_SYNC :
command_result = sync_cmd();
break;
case MBA_CMD_UNKNOWN :
default:
write_agent_log("main - [COMMAND ERROR] Unknown command", TRUE);
command_result = AGENT_RET_SUCCESS;
break;
}
if ( command_result == AGENT_RET_SUCCESS ) {
// Echo the buffer back to the sender
iSendResult = ac_write( MSG_ACK_PREFIX, sizeof(MSG_ACK_PREFIX) );
if (iSendResult == SOCKET_ERROR) {
write_agent_log("main - Send to server_socket", TRUE);
break;
}
iSendResult = ac_write( sRecvbuf, SZ_MAX_CMD );
if (iSendResult == SOCKET_ERROR) {
write_agent_log("main - Send to server_socket", TRUE);
break;
}
}
else
iResult = 1;
sprintf_s(sLogMessage, SZ_MAX_LOG, "Bytes sent: %d\r\n\r\n", iSendResult);
write_agent_log(sLogMessage, FALSE);
}
else if (GetLastError() == 0) {
write_agent_log("Receive nothing from server_socket", FALSE);
break;
}
else {
write_agent_log("Receive from server_socket", TRUE);
break;
}
} while (iResult > 0);
// shutdown the connection since we're done
iResult = shutdown(server_socket, SD_SEND);
if (iResult != -1 && iResult == SOCKET_ERROR) {
closesocket(server_socket);
write_agent_log("Main - shutdown server_socket", TRUE);
}
closesocket(server_socket);
sprintf_s(sLogMessage, SZ_MAX_LOG, "[SYSTEM] Connection closing...\r\n");
write_agent_log(sLogMessage, FALSE);
}
}
void server_mainloop( SOCKET sListenSocket )
{
SOCKET sClientSocket;
int iResult, // system information with error message
iSendResult, // system information with error message after send function
command_code;
MBA_AGENT_RETURN command_result;
char sRecvbuf[SZ_MAX_CMD << 1]; // receive buffer from client
char sCommand_line[SZ_MAX_CMD << 1]; // fully command line
// we allocate two times more space for the string manipulation
// Accept connections
while( true ) {
// Accept a client socket
sClientSocket = accept(sListenSocket, NULL, NULL);
if (sClientSocket == INVALID_SOCKET) {
display_error("main - accept", FALSE);
break;
}
sprintf_s(g_sLogMessage, SZ_MAX_LOG, "[SYSTEM] Connection starting...\r\n");
write_log();
g_sClientSocket = sClientSocket;
// Receive until the peer shuts down the connection
do {
ZeroMemory(sRecvbuf, sizeof(sRecvbuf));
iResult = recv(sClientSocket, sRecvbuf, SZ_MAX_CMD, MSG_WAITALL);
if (iResult > 0) {
sprintf_s(g_sLogMessage, SZ_MAX_LOG, "Bytes received: 0x%08x, Received message: %s\r\n", iResult, sRecvbuf);
write_log();
command_code = identify_command(sRecvbuf);
if (command_code > 0) {
ZeroMemory(sCommand_line, sizeof(sCommand_line));
memcpy(sCommand_line, &sRecvbuf[5], SZ_MAX_CMD - 5);
}
switch (command_code) {
case MBA_CMD_EXEC :
command_result = execute_cmd(sCommand_line);
break;
case MBA_CMD_INVO :
command_result = invoke_cmd(sCommand_line);
break;
case MBA_CMD_EXPO :
command_result = export_cmd(sCommand_line, sClientSocket);
break;
case MBA_CMD_IMPO :
command_result = import_cmd(sCommand_line, sClientSocket);
break;
case MBA_CMD_LOGF :
command_result = export_log( sClientSocket );
break;
case MBA_CMD_UNKNOWN :
default:
display_error("main - [COMMAND ERROR] Unknown command", TRUE);
command_result = AGENT_RET_SUCCESS;
break;
}
if ( command_result == AGENT_RET_SUCCESS ) {
// Echo the buffer back to the sender
iSendResult = send(sClientSocket, MSG_ACK_PREFIX, sizeof(MSG_ACK_PREFIX), 0);
if (iSendResult == SOCKET_ERROR) {
display_error("main - Send to sClientSocket", FALSE);
break;
}
iSendResult = send(sClientSocket, sRecvbuf, SZ_MAX_CMD, 0);
if (iSendResult == SOCKET_ERROR) {
display_error("main - Send to sClientSocket", FALSE);
break;
}
}
else
iResult = 1;
sprintf_s(g_sLogMessage, SZ_MAX_LOG, "Bytes sent: %d\r\n", iSendResult);
write_log();
}
else if (GetLastError() == 0)
break;
else {
display_error("Receive from sClientSocket", FALSE);
break;
}
} while (iResult > 0);
// shutdown the connection since we're done
iResult = shutdown(sClientSocket, SD_SEND);
if (iResult != -1 && iResult == SOCKET_ERROR) {
closesocket(sClientSocket);
display_error("Main - shutdown sClientSocket", FALSE);
}
closesocket(sClientSocket);
sprintf_s(g_sLogMessage, SZ_MAX_LOG, "[SYSTEM] Connection closing...\r\n");
write_log();
}
}