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pandorafms/pandora_agents/win32/pandora_windows_service.cc

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/* Pandora agents service for Win32.
Copyright (C) 2006 Artica ST.
Written by Esteban Sanchez, Ramon Novoa.
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, 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.
*/
#include "pandora_windows_service.h"
#include "pandora.h"
#include "pandora_strutils.h"
#include "windows_service.h"
#include "modules/pandora_module_factory.h"
#include "ssh/pandora_ssh_client.h"
#include "ftp/pandora_ftp_client.h"
#include "misc/pandora_file.h"
#include "windows/pandora_windows_info.h"
#include "udp_server/udp_server.h"
#include <iostream>
#include <cstdlib>
#include <ctime>
#include <direct.h>
using namespace std;
using namespace Pandora;
using namespace Pandora_Modules;
using namespace Pandora_Strutils;
Pandora_Windows_Service::Pandora_Windows_Service ()
: Windows_Service (NULL, NULL, NULL) {
this->setInitFunction ((void (Windows_Service::*) ())
&Pandora_Windows_Service::pandora_init);
this->setRunFunction ((void (Windows_Service::*) ())
&Pandora_Windows_Service::pandora_run);
this->started = false;
}
/**
* Set Pandora service Windows properties.
*
* @param svc_name Internal service name
* @param svc_display_name Service name that will appear in the
* Windows service administration tool.
* @param svc_description Long description of the service.
*/
void
Pandora_Windows_Service::setValues (const char * svc_name,
const char * svc_display_name,
const char * svc_description) {
this->service_name = (char *) svc_name;
this->service_display_name = (char *) svc_display_name;
this->service_description = (char *) svc_description;
execution_number = 0;
this->modules = NULL;
this->conf = NULL;
this->interval = 60000;
this->transfer_interval = this->interval;
this->elapsed_transfer_time = 0;
}
/**
* Destroys a Pandora_Windows_Service object.
*/
Pandora_Windows_Service::~Pandora_Windows_Service () {
if (this->conf != NULL) {
delete this->conf;
}
if (this->modules != NULL) {
delete this->modules;
}
pandoraLog ("Pandora agent stopped");
}
Pandora_Windows_Service *
Pandora_Windows_Service::getInstance () {
static Pandora_Windows_Service *service = NULL;
if (service != NULL)
return service;
service = new Pandora_Windows_Service ();
return service;
}
void
Pandora_Windows_Service::start () {
this->started = true;
}
void
Pandora_Windows_Service::pandora_init () {
string conf_file, interval, debug, transfer_interval;
string udp_server_enabled, udp_server_port, udp_server_addr, udp_server_auth_addr;
static UDP_Server *udp_server = NULL;
setPandoraDebug (true);
conf_file = Pandora::getPandoraInstallDir ();
conf_file += "pandora_agent.conf";
this->conf = Pandora::Pandora_Agent_Conf::getInstance ();
this->conf->setFile (conf_file);
this->modules = new Pandora_Module_List (conf_file);
/* Get the interval value (in seconds) and set it to the service */
interval = conf->getValue ("interval");
transfer_interval = conf->getValue ("transfer_interval");
debug = conf->getValue ("debug");
setPandoraDebug (is_enabled (debug));
if (interval != "") {
try {
/* miliseconds */
this->interval = strtoint (interval) * 1000;
} catch (Invalid_Conversion e) {
}
}
if (transfer_interval == "") {
this->transfer_interval = this->interval;
} else {
try {
/* miliseconds */
this->transfer_interval = strtoint (transfer_interval) * 1000;
} catch (Invalid_Conversion e) {
this->transfer_interval = this->interval;
}
}
srand ((unsigned) time (0));
this->setSleepTime (this->interval);
pandoraLog ("Pandora agent started");
/* Launch UDP Server */
udp_server_enabled = conf->getValue ("udp_server");
if (udp_server == NULL && udp_server_enabled.compare ("1") == 0) {
udp_server_port = conf->getValue ("udp_server_port");
udp_server_addr = conf->getValue ("udp_server_address");
udp_server_auth_addr = conf->getValue ("udp_server_auth_address");
udp_server = new UDP_Server (this, udp_server_addr, udp_server_auth_addr, atoi (udp_server_port.c_str ()));
udp_server->start ();
}
}
TiXmlElement *
Pandora_Windows_Service::getXmlHeader () {
TiXmlElement *agent;
char timestamp[20];
string value;
time_t ctime;
struct tm *ctime_tm = NULL;
agent = new TiXmlElement ("agent_data");
value = conf->getValue ("agent_name");
if (value == "") {
value = Pandora_Windows_Info::getSystemName ();
}
agent->SetAttribute ("agent_name", value);
agent->SetAttribute ("version", getPandoraAgentVersion ());
// Get current time
ctime = time(0);
ctime_tm = localtime(&ctime);
sprintf (timestamp, "%d-%02d-%02d %02d:%02d:%02d", ctime_tm->tm_year + 1900,
ctime_tm->tm_mon + 1, ctime_tm->tm_mday, ctime_tm->tm_hour,
ctime_tm->tm_min, ctime_tm->tm_sec);
agent->SetAttribute ("timestamp", timestamp);
value = conf->getValue ("interval");
agent->SetAttribute ("interval", value);
value = Pandora_Windows_Info::getOSName ();
agent->SetAttribute ("os", value);
value = Pandora_Windows_Info::getOSVersion ();
agent->SetAttribute ("os_version", value);
return agent;
}
int
Pandora_Windows_Service::copyTentacleDataFile (string host,
string filename,
string port,
string ssl,
string pass,
string opts)
{
bool rc = false;
string var, filepath;
string tentacle_cmd, working_dir;
PROCESS_INFORMATION pi;
STARTUPINFO si;
var = conf->getValue ("temporal");
if (var[var.length () - 1] != '\\') {
var += "\\";
}
filepath = var + filename;
/* Build the command to launch the Tentacle client */
tentacle_cmd = "tentacle_client.exe -a " + host;
if (port != "") {
tentacle_cmd += " -p " + port;
}
if (ssl == "1") {
tentacle_cmd += " -c";
}
if (pass != "") {
tentacle_cmd += " -x " + pass;
}
if (opts != "") {
tentacle_cmd += " " + opts;
}
tentacle_cmd += " " + filepath;
/* Copy the file */
pandoraDebug ("Remote copying XML %s on server %s",
filepath.c_str (), host.c_str ());
pandoraDebug ("Command %s", tentacle_cmd.c_str());
ZeroMemory (&si, sizeof (si));
ZeroMemory (&pi, sizeof (pi));
rc = CreateProcess (NULL , (CHAR *)tentacle_cmd.c_str (), NULL, NULL, FALSE, CREATE_NO_WINDOW,
NULL, NULL, &si, &pi);
WaitForSingleObject(pi.hProcess, INFINITE);
if (rc == true) {
return 0;
}
pandoraDebug ("Tentacle client was unable to copy %s",
filename.c_str ());
return -1;
}
int
Pandora_Windows_Service::copyScpDataFile (string host,
string remote_path,
string filename)
{
int rc = 0;
SSH::Pandora_Ssh_Client ssh_client;
string tmp_dir, filepath;
string pubkey_file, privkey_file;
tmp_dir = conf->getValue ("temporal");
if (tmp_dir[tmp_dir.length () - 1] != '\\') {
tmp_dir += "\\";
}
filepath = tmp_dir + filename;
pandoraDebug ("Connecting with %s", host.c_str ());
pubkey_file = Pandora::getPandoraInstallDir ();
pubkey_file += "key\\id_dsa.pub";
privkey_file = Pandora::getPandoraInstallDir ();
privkey_file += "key\\id_dsa";
rc = ssh_client.connectWithPublicKey (host.c_str (), 22, "pandora",
pubkey_file, privkey_file, "");
if (rc == AUTHENTICATION_FAILED) {
pandoraLog ("Pandora Agent: Authentication Failed "
"when connecting to %s",
host.c_str ());
return rc;
} else if (rc == PANDORA_EXCEPTION) {
pandoraLog ("Pandora Agent: Failed when copying to %s",
host.c_str ());
return rc;
}
pandoraDebug ("Remote copying XML %s on server %s at %s%s",
filepath.c_str (), host.c_str (),
remote_path.c_str (), filename.c_str ());
rc = ssh_client.scpFileFilename (remote_path + filename,
filepath);
if (rc = PANDORA_EXCEPTION) {
pandoraLog ("Unable to copy at %s%s", remote_path.c_str (),
filename.c_str ());
ssh_client.disconnect();
return rc;
}
ssh_client.disconnect();
return rc;
}
int
Pandora_Windows_Service::copyFtpDataFile (string host,
string remote_path,
string filename,
string password)
{
int rc = 0;
FTP::Pandora_Ftp_Client ftp_client;
string filepath;
filepath = conf->getValue ("temporal");
if (filepath[filepath.length () - 1] != '\\') {
filepath += "\\";
}
filepath += filename;
ftp_client.connect (host,
22,
"pandora",
password);
rc = ftp_client.ftpFileFilename (remote_path + filename,
filepath);
if (rc == UNKNOWN_HOST) {
pandoraLog ("Pandora Agent: Failed when copying to %s (%s)",
host.c_str (), ftp_client.getError ().c_str ());
ftp_client.disconnect ();
return rc;
} else if (rc == AUTHENTICATION_FAILED) {
pandoraLog ("Pandora Agent: Authentication Failed "
"when connecting to %s (%s)",
host.c_str (), ftp_client.getError ().c_str ());
ftp_client.disconnect ();
return rc;
} else if (rc == FTP_EXCEPTION) {
pandoraLog ("Pandora Agent: Failed when copying to %s (%s)",
host.c_str (), ftp_client.getError ().c_str ());
ftp_client.disconnect ();
return rc;
}
ftp_client.disconnect ();
return rc;
}
int
Pandora_Windows_Service::copyDataFile (string filename)
{
int rc = 0;
unsigned char copy_to_secondary = 0;
string mode, host, remote_path;
mode = conf->getValue ("transfer_mode");
host = conf->getValue ("server_ip");
remote_path = conf->getValue ("server_path");
// Fix remote path
if (mode != "local" && remote_path[remote_path.length () - 1] != '/') {
remote_path += "/";
} else if (mode == "local" && remote_path[remote_path.length () - 1] != '\\') {
remote_path += "\\";
}
if (mode == "ftp") {
rc = copyFtpDataFile (host, remote_path, filename, conf->getValue ("server_pwd"));
} else if (mode == "tentacle" || mode == "") {
rc = copyTentacleDataFile (host, filename, conf->getValue ("server_port"),
conf->getValue ("server_ssl"), conf->getValue ("server_pwd"),
conf->getValue ("server_opts"));
} else if (mode == "ssh") {
rc =copyScpDataFile (host, remote_path, filename);
} else if (mode == "local") {
rc = copyLocalDataFile (remote_path, filename);
} else {
rc = PANDORA_EXCEPTION;
pandoraLog ("Invalid transfer mode: %s."
"Please recheck transfer_mode option "
"in configuration file.");
}
if (rc == 0) {
pandoraDebug ("Successfuly copied XML file to server.");
} else if (conf->getValue ("secondary_mode") == "on_error") {
copy_to_secondary = 1;
}
if (conf->getValue ("secondary_mode") == "always") {
copy_to_secondary = 1;
}
// Copy the file to the secondary server if needed
if (copy_to_secondary == 0) {
return rc;
}
if (mode == "ftp") {
rc = copyFtpDataFile (host, remote_path, filename, conf->getValue ("secondary_server_pwd"));
} else if (mode == "tentacle" || mode == "") {
rc = copyTentacleDataFile (host, filename, conf->getValue ("secondary_server_port"),
conf->getValue ("secondary_server_ssl"), conf->getValue ("secondary_server_pwd"),
conf->getValue ("secondary_server_opts"));
} else if (mode == "ssh") {
rc = copyScpDataFile (host, remote_path, filename);
} else {
rc = PANDORA_EXCEPTION;
pandoraLog ("Invalid transfer mode: %s."
"Please recheck transfer_mode option "
"in configuration file.");
}
if (rc == 0) {
pandoraDebug ("Successfuly copied XML file to secondary server.");
}
return rc;
}
void
Pandora_Windows_Service::recvTentacleDataFile (string host,
string filename)
{
int rc;
string var;
string tentacle_cmd;
/* Change directory to "temporal" */
var = conf->getValue ("temporal");
if (_chdir(var.c_str()) != 0) {
pandoraDebug ("Error changing directory to %s", var.c_str());
throw Pandora_Exception ();
}
/* Build the command to launch the Tentacle client */
tentacle_cmd = "tentacle_client.exe -g -a " + host;
var = conf->getValue ("server_port");
if (var != "") {
tentacle_cmd += " -p " + var;
}
var = conf->getValue ("server_ssl");
if (var == "1") {
tentacle_cmd += " -c";
}
var = conf->getValue ("server_pwd");
if (var != "") {
tentacle_cmd += " -x " + var;
}
var = conf->getValue ("server_opts");
if (var != "") {
tentacle_cmd += " " + var;
}
tentacle_cmd += " " + filename;
/* Copy the file */
pandoraDebug ("Requesting file %s from server %s",
filename.c_str (), host.c_str ());
pandoraDebug ("Command %s", tentacle_cmd.c_str());
rc = system (tentacle_cmd.c_str());
switch (rc) {
/* system() error */
case -1:
pandoraLog ("Unable to receive file %s", filename.c_str ());
throw Pandora_Exception ();
/* tentacle_client.exe returned OK */
case 0:
break;
/* tentacle_client.exe error */
default:
pandoraDebug ("Tentacle client was unable to receive file %s",
filename.c_str ());
throw Pandora_Exception ();
}
return;
}
void
Pandora_Windows_Service::recvDataFile (string filename) {
string mode, host, remote_path;
mode = conf->getValue ("transfer_mode");
host = conf->getValue ("server_ip");
remote_path = conf->getValue ("server_path");
if (remote_path[remote_path.length () - 1] != '/') {
remote_path += "/";
}
try {
if (mode == "tentacle") {
recvTentacleDataFile (host, filename);
} else {
pandoraLog ("Transfer mode %s does not support file retrieval.");
throw Pandora_Exception ();
}
}
catch (Pandora_Exception e) {
throw e;
}
}
int
Pandora_Windows_Service::copyLocalDataFile (string remote_path,
string filename)
{
string local_path, local_file, remote_file;
local_path = conf->getValue ("temporal");
if (local_path[local_path.length () - 1] != '\\') {
local_path += "\\";
}
local_file = local_path + filename;
remote_file = remote_path + filename;
if (!CopyFile (local_file.c_str (), remote_file.c_str (), TRUE)) {
return PANDORA_EXCEPTION;
}
}
void
Pandora_Windows_Service::checkConfig () {
int i, conf_size;
char *conf_str = NULL, *remote_conf_str = NULL, *remote_conf_md5 = NULL;
char agent_md5[33], conf_md5[33], flag;
string conf_file, conf_tmp_file, md5_tmp_file, temp_dir, tmp;
tmp = conf->getValue ("remote_config");
if (tmp != "1") {
pandoraDebug ("Pandora_Windows_Service::checkConfig: Remote configuration disabled");
return;
}
/* Get temporal directory */
temp_dir = conf->getValue ("temporal");
if (temp_dir[temp_dir.length () - 1] != '\\') {
temp_dir += "\\";
}
/* Get base install directory */
conf_file = Pandora::getPandoraInstallDir ();
conf_file += "pandora_agent.conf";
/* Get agent name */
tmp = conf->getValue ("agent_name");
if (tmp == "") {
tmp = Pandora_Windows_Info::getSystemName ();
}
Pandora_File::md5 (tmp.c_str(), tmp.size(), agent_md5);
/* Calculate md5 hashes */
try {
conf_size = Pandora_File::readBinFile (conf_file, &conf_str);
Pandora_File::md5 (conf_str, conf_size, conf_md5);
} catch (...) {
pandoraDebug ("Pandora_Windows_Service::checkConfig: Error calculating configuration md5");
if (conf_str != NULL) {
delete[] conf_str;
}
return;
}
/* Compose file names from the agent name hash */
conf_tmp_file = agent_md5;
conf_tmp_file += ".conf";
md5_tmp_file = agent_md5;
md5_tmp_file += ".md5";
/* Get md5 file from server */
try {
recvDataFile (md5_tmp_file);
} catch (...) {
/* Not found, upload the configuration */
try {
tmp = temp_dir;
tmp += conf_tmp_file;
Pandora_File::writeBinFile (tmp, conf_str, conf_size);
copyDataFile (conf_tmp_file);
Pandora_File::removeFile (tmp);
tmp = temp_dir;
tmp += md5_tmp_file;
Pandora_File::writeBinFile (tmp, conf_md5, 32);
copyDataFile (md5_tmp_file);
Pandora_File::removeFile (tmp);
} catch (...) {
pandoraDebug ("Pandora_Windows_Service::checkConfig: Error uploading configuration to server");
}
delete[] conf_str;
return;
}
delete[] conf_str;
conf_str = NULL;
/* Read remote configuration file md5 */
try {
tmp = temp_dir;
tmp += md5_tmp_file;
if (Pandora_File::readBinFile (tmp, &remote_conf_md5) < 32) {
pandoraDebug ("Pandora_Windows_Service::checkConfig: Invalid remote md5", tmp.c_str());
if (remote_conf_md5 != NULL) {
delete[] remote_conf_md5;
}
return;
}
Pandora_File::removeFile (tmp);
} catch (...) {
pandoraDebug ("Pandora_Windows_Service::checkConfig: Error checking remote configuration md5", tmp.c_str());
return;
}
/* Check for configuration changes */
flag = 0;
for (i = 0; i < 32; i++) {
if (remote_conf_md5[i] != conf_md5[i]) {
flag = 1;
break;
}
}
delete[] remote_conf_md5;
/* Configuration has not changed */
if (flag == 0) {
return;
}
pandoraLog("Pandora_Windows_Service::checkConfig: Configuration has changed");
/* Get configuration file from server */
try {
recvDataFile (conf_tmp_file);
tmp = temp_dir;
tmp += conf_tmp_file;
conf_size = Pandora_File::readBinFile (tmp, &conf_str);
Pandora_File::removeFile (tmp);
/* Save new configuration */
Pandora_File::writeBinFile (conf_file, conf_str, conf_size);
} catch (...) {
pandoraDebug("Pandora_Windows_Service::checkConfig: Error retrieving configuration file from server");
if (conf_str != NULL) {
delete[] conf_str;
}
return;
}
delete[] conf_str;
/* Reload configuration */
this->pandora_init ();
}
int
Pandora_Windows_Service::sendXml (Pandora_Module_List *modules) {
int rc = 0;
TiXmlDeclaration *decl;
TiXmlDocument *doc;
TiXmlElement *local_xml, *agent;
string xml_filename, random_integer;
string tmp_filename, tmp_filepath;
string encoding;
bool saved;
static HANDLE mutex = 0;
ULARGE_INTEGER free_bytes;
double min_free_bytes = 0;
Pandora_Agent_Conf *conf = NULL;
conf = this->getConf ();
min_free_bytes = 1024 * atoi (conf->getValue ("temporal_min_size").c_str ());
if (mutex == 0) {
mutex = CreateMutex (NULL, FALSE, NULL);
}
/* Wait for the mutex to be opened */
WaitForSingleObject (mutex, INFINITE);
agent = getXmlHeader ();
if (modules != NULL) {
modules->goFirst ();
while (! modules->isLast ()) {
Pandora_Module *module;
module = modules->getCurrentValue ();
local_xml = module->getXml ();
if (local_xml != NULL) {
agent->InsertEndChild (*local_xml);
delete local_xml;
}
modules->goNext ();
}
}
/* Generate temporal filename */
random_integer = inttostr (rand());
tmp_filename = conf->getValue ("agent_name");
if (tmp_filename == "") {
tmp_filename = Pandora_Windows_Info::getSystemName ();
}
tmp_filename += "." + random_integer + ".data";
xml_filename = conf->getValue ("temporal");
if (xml_filename[xml_filename.length () - 1] != '\\') {
xml_filename += "\\";
}
tmp_filepath = xml_filename + tmp_filename;
/* Copy the XML to temporal file */
encoding = conf->getValue ("encoding");
if (encoding == "") {
encoding = "ISO-8859-1";
}
pandoraDebug ("Copying XML on %s", tmp_filepath.c_str ());
decl = new TiXmlDeclaration ("1.0", encoding.c_str(), "");
doc = new TiXmlDocument (tmp_filepath);
doc->InsertEndChild (*decl);
doc->InsertEndChild (*agent);
saved = doc->SaveFile();
delete doc;
delete agent;
if (!saved) {
pandoraLog ("Error when saving the XML in %s",
tmp_filepath.c_str ());
ReleaseMutex (mutex);
return PANDORA_EXCEPTION;
}
/* Only send if debug is not activated */
if (getPandoraDebug () == false) {
rc = this->copyDataFile (tmp_filename);
/* Delete the file if successfully copied or not enough space available */
if (rc == 0 || (GetDiskFreeSpaceEx (tmp_filepath.c_str (), &free_bytes, NULL, NULL) != 0
&& free_bytes.QuadPart < min_free_bytes)) {
Pandora_File::removeFile (tmp_filepath);
}
/* Send any buffered data files */
this->sendBufferedXml (conf->getValue ("temporal"));
}
ReleaseMutex (mutex);
}
void
Pandora_Windows_Service::sendBufferedXml (string path) {
string base_path = path, file_path;
WIN32_FIND_DATA file_data;
HANDLE find;
if (base_path[base_path.length () - 1] != '\\') {
base_path += "\\";
}
file_path = base_path + "*.data";
/* Search for buffered data files */
find = FindFirstFile(file_path.c_str (), &file_data);
if (find == INVALID_HANDLE_VALUE) {
return;
}
/* Send data files as long as there are no errors */
if (this->copyDataFile (file_data.cFileName) != 0) {
FindClose(find);
return;
}
Pandora_File::removeFile (base_path + file_data.cFileName);
while (FindNextFile(find, &file_data) != 0) {
if (this->copyDataFile (file_data.cFileName) != 0) {
FindClose(find);
return;
}
Pandora_File::removeFile (base_path + file_data.cFileName);
}
FindClose(find);
}
void
Pandora_Windows_Service::pandora_run () {
Pandora_Agent_Conf *conf = NULL;
string server_addr;
int startup_delay = 0;
pandoraDebug ("Run begin");
conf = this->getConf ();
/* Sleep if a startup delay was specified */
startup_delay = atoi (conf->getValue ("startup_delay").c_str ());
if (startup_delay > 0) {
pandoraLog ("Delaying startup %d seconds", startup_delay);
Sleep (startup_delay);
}
/* Check for configuration changes */
this->checkConfig ();
server_addr = conf->getValue ("server_ip");
execution_number++;
if (this->modules != NULL) {
this->modules->goFirst ();
while (! this->modules->isLast ()) {
Pandora_Module *module;
module = this->modules->getCurrentValue ();
pandoraDebug ("Run %s", module->getName ().c_str ());
module->run ();
this->modules->goNext ();
}
}
this->elapsed_transfer_time += this->interval;
if (this->elapsed_transfer_time >= this->transfer_interval) {
this->elapsed_transfer_time = 0;
if (!server_addr.empty ()) {
this->sendXml (this->modules);
}
}
/* Get the interval value (in minutes) */
pandoraDebug ("Next execution on %d seconds", this->interval / 1000);
return;
}
Pandora_Agent_Conf *
Pandora_Windows_Service::getConf () {
return this->conf;
}
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