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RetroShare/libretroshare/src/pqi/p3cfgmgr.cc
csoler 663ce50630 patch from AsamK to fix up crash at startup due to a missing else 
git-svn-id: http://svn.code.sf.net/p/retroshare/code/trunk@4587 b45a01b8-16f6-495d-af2f-9b41ad6348cc
2011-09-03 22:16:51 +00:00

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/*
* libretroshare/src/pqi: p3cfgmgr.cc
*
* 3P/PQI network interface for RetroShare.
*
* Copyright 2007-2008 by Robert Fernie.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License Version 2 as published by the Free Software Foundation.
*
* This library 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*
* Please report all bugs and problems to "retroshare@lunamutt.com".
*
*/
#include "util/rsdir.h"
//#include "retroshare/rspeers.h"
#include "pqi/p3cfgmgr.h"
#include "pqi/authssl.h"
#include "pqi/pqibin.h"
#include "pqi/pqistore.h"
#include "pqi/pqiarchive.h"
#include "pqi/pqinotify.h"
#include <errno.h>
#include <util/rsdiscspace.h>
#include "serialiser/rsconfigitems.h"
/*
#define CONFIG_DEBUG 1
*/
#define BACKEDUP_SAVE
p3ConfigMgr::p3ConfigMgr(std::string dir, std::string fname, std::string signame)
:basedir(dir), metafname(fname), metasigfname(signame), cfgMtx("p3ConfigMgr"),
mConfigSaveActive(true)
{
oldConfigType = checkForGlobalSigConfig();
// configuration to load correct global types
pqiConfig::globalConfigType = oldConfigType;
}
void p3ConfigMgr::tick()
{
bool toSave = false;
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
/* iterate through and check if any have changed */
std::map<uint32_t, pqiConfig *>::iterator it;
for(it = configs.begin(); it != configs.end(); it++)
{
if (it->second->HasConfigChanged(0))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::tick() Config Changed - Element: ";
std::cerr << it->first;
std::cerr << std::endl;
#endif
toSave = true;
}
}
/* disable saving before exit */
if (!mConfigSaveActive)
{
toSave = false;
}
}
if (toSave)
{
saveConfiguration();
}
}
void p3ConfigMgr::saveConfiguration()
{
if(!RsDiscSpace::checkForDiscSpace(RS_CONFIG_DIRECTORY))
return ;
saveConfig();
}
void p3ConfigMgr::saveConfig()
{
bool ok= true;
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
std::map<uint32_t, pqiConfig *>::iterator it;
for(it = configs.begin(); it != configs.end(); it++)
{
if (it->second->HasConfigChanged(1))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig() Saving Element: ";
std::cerr << it->first;
std::cerr << std::endl;
#endif
ok &= it->second->saveConfiguration();
}
/* save metaconfig */
}
if(ok && oldConfigType)
removeOldConfigType();
return;
}
void p3ConfigMgr::removeOldConfigType()
{
std::string fName = basedir + "/" + metafname;
std::string sigfName = basedir + "/" + metasigfname;
remove(fName.c_str());
remove(sigfName.c_str());
//now set globalconfig type to false so mgr saves
oldConfigType = false;
pqiConfig::globalConfigType = oldConfigType;
}
void p3ConfigMgr::globalSaveConfig()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig()";
std::cerr << std::endl;
#endif
RsConfigKeyValueSet *item = new RsConfigKeyValueSet();
std::map<uint32_t, pqiConfig *>::iterator it;
for(it = configs.begin(); it != configs.end(); it++)
{
if (it->second->HasConfigChanged(1))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig() Saving Element: ";
std::cerr << it->first;
std::cerr << std::endl;
#endif
it->second->saveConfiguration();
}
/* save metaconfig */
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig() Element: ";
std::cerr << it->first << " Hash: " << it->second->Hash();
std::cerr << std::endl;
#endif
if (it->second->Hash() == "")
{
/* skip if no hash */
continue;
}
RsTlvKeyValue kv;
{
std::ostringstream out;
out << it->first;
kv.key = out.str();
}
kv.value = it->second->Hash();
item->tlvkvs.pairs.push_back(kv);
}
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig() Complete MetaConfigItem: ";
std::cerr << std::endl;
item->print(std::cerr, 20);
#endif
/* construct filename */
std::string fname = basedir;
std::string sign_fname = basedir;
std::string fname_backup, sign_fname_backup; // back up files
if (basedir != "")
{
fname += "/";
sign_fname += "/";
}
fname += metafname;
sign_fname += metasigfname;
fname_backup = fname + ".tmp";
sign_fname_backup = sign_fname + ".tmp";
/* Write the data to a stream */
uint32_t bioflags = BIN_FLAGS_WRITEABLE;
BinMemInterface *configbio = new BinMemInterface(1000, bioflags);
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsGeneralConfigSerialiser());
pqistore store(rss, "CONFIG", configbio, BIN_FLAGS_WRITEABLE);
store.SendItem(item);
/* sign data */
std::string signature;
AuthSSL::getAuthSSL()->SignData(configbio->memptr(), configbio->memsize(), signature);
/* write signature to configuration */
BinMemInterface *signbio = new BinMemInterface(signature.c_str(),
signature.length(), BIN_FLAGS_READABLE);
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::globalSaveConfig() MetaFile Signature:";
std::cerr << std::endl;
std::cerr << signature;
std::cerr << std::endl;
#endif
// begin two pass save
backedUpFileSave(fname, fname_backup, sign_fname, sign_fname_backup, configbio, signbio);
delete signbio;
}
bool p3ConfigMgr::backedUpFileSave(const std::string& fname, const std::string& fname_backup, const std::string& sign_fname,
const std::string& sign_fname_backup, BinMemInterface* configbio, BinMemInterface* signbio){
FILE *file = NULL, *sign = NULL;
char *config_buff=NULL, *sign_buff=NULL;
int size_file=0, size_sign=0;
// begin two pass saving by writing to back up file instead
if (!configbio->writetofile(fname_backup.c_str()) || !signbio->writetofile(sign_fname_backup.c_str()))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::backedupFileSave() Failed write to Backup MetaFiles " << fname_backup
<< " and " << sign_fname_backup;
std::cerr << std::endl;
#endif
return false;
}
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() Save file and keeps a back up " << std::endl;
#endif
// open file from which to collect buffer
file = RsDirUtil::rs_fopen(fname.c_str(), "rb");
sign = RsDirUtil::rs_fopen(sign_fname.c_str(), "rb");
// if failed then create files
if((file == NULL) || (sign == NULL)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() failed to open meta files " << fname << std::endl;
#endif
file = RsDirUtil::rs_fopen(fname.c_str(), "wb");
sign = RsDirUtil::rs_fopen(sign_fname.c_str(), "wb");
if((file == NULL) || (sign == NULL)){
std::cerr << "p3Config::backedUpFileSave() failed to open backup meta files" << fname_backup << std::endl;
return false;
}
}
//determine file size
fseek(file, 0L, SEEK_END);
size_file = ftell(file);
fseek(file, 0L, SEEK_SET);
fseek(sign, 0L, SEEK_END);
size_sign = ftell(sign);
fseek(sign, 0L, SEEK_SET);
if((size_file) > 0 && (size_sign > 0)){
//read this into a buffer
config_buff = new char[size_file];
fread(config_buff, 1, size_file, file);
//read this into a buffer
sign_buff = new char[size_sign];
fread(sign_buff, 1, size_sign, sign);
}
fclose(file);
fclose(sign);
// rename back-up to current file
if(!RsDirUtil::renameFile(fname_backup, fname) || !RsDirUtil::renameFile(sign_fname_backup, sign_fname)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() Failed to rename backup meta files: " << std::endl
<< fname_backup << " to " << fname << std::endl
<< sign_fname_backup << " to " << sign_fname << std::endl;
#endif
return true;
}
if((size_file) > 0 && (size_sign > 0)){
// now write actual back-up file
file = RsDirUtil::rs_fopen(fname_backup.c_str(), "wb");
sign = RsDirUtil::rs_fopen(sign_fname_backup.c_str(), "wb");
if((file == NULL) || (sign == NULL)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() fopen failed for file: " << fname_backup << std::endl;
#endif
return true;
}
if(size_file != fwrite(config_buff,1, size_file, file))
getPqiNotify()->AddSysMessage(0, RS_SYS_WARNING, "Write error", "Error while writing backup configuration file " + fname_backup + "\nIs your disc full or out of quota ?");
if(size_sign != fwrite(sign_buff, 1, size_sign, sign))
getPqiNotify()->AddSysMessage(0, RS_SYS_WARNING, "Write error", "Error while writing main signature file " + sign_fname_backup + "\nIs your disc full or out of quota ?");
fclose(file);
fclose(sign);
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() finished backed up save. " << std::endl;
#endif
delete[] config_buff;
delete[] sign_buff;
}
return true;
}
void p3ConfigMgr::loadConfiguration()
{
if(oldConfigType)
globalLoadConfig();
else
loadConfig();
return;
}
void p3ConfigMgr::loadConfig()
{
std::map<uint32_t, pqiConfig *>::iterator cit;
std::string dummyHash = "dummyHash";
for (cit = configs.begin(); cit != configs.end(); cit++)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::loadConfig() Element: ";
std::cerr << cit->first <<"Dummy Hash: " << dummyHash;
std::cerr << std::endl;
#endif
cit->second->loadConfiguration(dummyHash);
/* force config to NOT CHANGED */
cit->second->HasConfigChanged(0);
cit->second->HasConfigChanged(1);
}
return;
}
void p3ConfigMgr::globalLoadConfig()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::loadConfiguration()";
std::cerr << std::endl;
#endif
/* construct filename */
std::string fname = basedir;
std::string sign_fname = basedir;
std::string fname_backup, sign_fname_backup;
if (basedir != "")
{
fname += "/";
sign_fname += "/";
}
fname += metafname;
sign_fname += metasigfname;
// temporary files
fname_backup = fname + ".tmp";
sign_fname_backup = sign_fname + ".tmp";
BinMemInterface* membio = new BinMemInterface(1000, BIN_FLAGS_READABLE);
// Will attempt to get signature first from meta file then if that fails try temporary meta files, these will correspond to temp configs
bool pass = getSignAttempt(fname, sign_fname, membio);
// if first attempt fails then try and temporary files
if(!pass){
#ifdef CONFIG_DEBUG
std::cerr << "\np3ConfigMgr::loadConfiguration(): Trying to load METACONFIG item and METASIGN with temporary files";
std::cerr << std::endl;
#endif
pass = getSignAttempt(fname_backup, sign_fname_backup , membio);
if(!pass){
#ifdef CONFIG_DEBUG
std::cerr << "\np3ConfigMgr::loadConfiguration(): failed to load METACONFIG item and METASIGN";
std::cerr << std::endl;
#endif
return;
}
}
membio->fseek(0); /* go back to start of file */
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsGeneralConfigSerialiser());
pqistore stream(rss, "CONFIG", membio, BIN_FLAGS_READABLE);
RsItem *rsitem = stream.GetItem();
RsConfigKeyValueSet *item = dynamic_cast<RsConfigKeyValueSet *>(rsitem);
if (!item)
{
delete rsitem;
return;
}
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::loadConfiguration() Loaded MetaConfigItem: ";
std::cerr << std::endl;
item->print(std::cerr, 20);
#endif
/* extract info from KeyValueSet */
std::list<RsTlvKeyValue>::iterator it;
for(it = item->tlvkvs.pairs.begin(); it != item->tlvkvs.pairs.end(); it++)
{
/* find the configuration */
uint32_t confId = atoi(it->key.c_str());
std::string hashin = it->value;
/*********************** HACK TO CHANGE CACHE CONFIG ID *********
* REMOVE IN A MONTH OR TWO
*/
if (confId == CONFIG_TYPE_CACHE_OLDID)
{
confId = CONFIG_TYPE_CACHE;
}
/*********************** HACK TO CHANGE CACHE CONFIG ID *********/
std::map<uint32_t, pqiConfig *>::iterator cit;
cit = configs.find(confId);
if (cit != configs.end())
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::loadConfiguration() Element: ";
std::cerr << confId << " Hash: " << hashin;
std::cerr << std::endl;
#endif
(cit->second)->loadConfiguration(hashin);
/* force config to CHANGED to force saving into new non-global sig format */
cit->second->IndicateConfigChanged();
// cit->second->HasConfigChanged(0);
// cit->second->HasConfigChanged(1);
}
}
delete item;
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::loadConfiguration() Done!";
std::cerr << std::endl;
#endif
}
bool p3ConfigMgr::getSignAttempt(std::string& metaConfigFname, std::string& metaSignFname, BinMemInterface* membio){
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() metaConfigFname : " << metaConfigFname;
std::cerr << std::endl;
std::cerr << "p3ConfigMgr::getSignAttempt() metaSignFname : " << metaSignFname;
std::cerr << std::endl;
#endif
/* read signature */
BinMemInterface *signbio = new BinMemInterface(1000, BIN_FLAGS_READABLE);
if (!signbio->readfromfile(metaSignFname.c_str()))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() Failed to Load MetaSignFile";
std::cerr << std::endl;
#endif
/* HACK to load the old one (with the wrong directory)
* THIS SHOULD BE REMOVED IN A COUPLE OF VERSIONS....
* ONLY HERE TO CORRECT BAD MISTAKE IN EARLIER VERSIONS.
*/
metaSignFname = metasigfname;
metaConfigFname = metafname;
if (!signbio->readfromfile(metaSignFname.c_str()))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() HACK: Failed to Load ALT MetaSignFile";
std::cerr << std::endl;
#endif
}
else
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() HACK: Loaded ALT MetaSignFile";
std::cerr << std::endl;
#endif
}
}
std::string oldsignature((char *) signbio->memptr(), signbio->memsize());
delete signbio;
if (!membio->readfromfile(metaConfigFname.c_str()))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() Failed to Load MetaFile";
std::cerr << std::endl;
#endif
// delete membio;
// return ;
}
/* get signature */
std::string signature;
AuthSSL::getAuthSSL()->SignData(membio->memptr(), membio->memsize(), signature);
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() New MetaFile Signature:";
std::cerr << std::endl;
std::cerr << signature;
std::cerr << std::endl;
#endif
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() Orig MetaFile Signature:";
std::cerr << std::endl;
std::cerr << oldsignature;
std::cerr << std::endl;
#endif
if (signature != oldsignature)
{
/* Failed */
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() Signature Check Failed";
std::cerr << std::endl;
#endif
return false;
}
#ifdef CONFIG_DEBUG
std::cerr << "p3ConfigMgr::getSignAttempt() Signature Check Passed!";
std::cerr << std::endl;
#endif
return true;
}
void p3ConfigMgr::addConfiguration(std::string file, pqiConfig *conf)
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
/* construct filename */
std::string filename = basedir;
if (basedir != "")
{
filename += "/";
}
filename += file;
conf->setFilename(filename);
configs[conf->Type()] = conf;
}
void p3ConfigMgr::completeConfiguration()
{
saveConfiguration();
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
mConfigSaveActive = false;
}
bool p3ConfigMgr::checkForGlobalSigConfig()
{
bool oldTypeExists;
FILE *metaFile = NULL, *metaSig = NULL;
std::string fName = basedir + "/" + metafname;
std::string sigName = basedir + "/" + metasigfname;
metaFile = RsDirUtil::rs_fopen(fName.c_str(), "r");
metaSig = RsDirUtil::rs_fopen(sigName.c_str(), "r");
// check if files exist
if((metaFile != NULL) && (metaSig != NULL))
{
oldTypeExists = true;
fclose(metaFile);
fclose(metaSig);
}
else
oldTypeExists = false;
return oldTypeExists;
}
p3Config::p3Config(uint32_t t)
:pqiConfig(t)
{
return;
}
bool p3Config::loadConfiguration(std::string &loadHash)
{
if(globalConfigType)
return loadGlobalConfig(loadHash);
else
return loadConfig();
}
bool p3Config::loadConfig()
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfig() loading Configuration\n File: " << Filename() << std::endl;
#endif
bool pass = true;
std::string cfgFname = Filename();
std::string cfgFnameBackup = cfgFname + ".tmp";
std::string signFname = Filename() +".sgn";
std::string signFnameBackup = signFname + ".tmp";
std::list<RsItem *> load;
std::list<RsItem *>::iterator it;
// try 1st attempt
if(!loadAttempt(cfgFname, signFname, load))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfig() Failed to Load" << std::endl;
#endif
/* bad load */
for(it = load.begin(); it != load.end(); it++)
{
delete (*it);
}
pass = false;
load.clear();
}
// try 2nd attempt with backup files if first failed
if(!pass)
{
if(!loadAttempt(cfgFnameBackup, signFnameBackup, load))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfig() Failed on 2nd Pass" << std::endl;
#endif
/* bad load */
for(it = load.begin(); it != load.end(); it++)
{
delete (*it);
}
pass = false;
}
else
pass = true;
}
if(pass)
loadList(load);
else
return false;
return pass;
}
bool p3Config::loadAttempt(const std::string& cfgFname,const std::string& signFname, std::list<RsItem *>& load)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadAttempt() \nFilename: " << cfgFname << std::endl;
#endif
uint32_t bioflags = BIN_FLAGS_HASH_DATA | BIN_FLAGS_READABLE;
uint32_t stream_flags = BIN_FLAGS_READABLE;
BinEncryptedFileInterface *bio = new BinEncryptedFileInterface(cfgFname.c_str(), bioflags);
pqiSSLstore stream(setupSerialiser(), "CONFIG", bio, stream_flags);
if(!stream.getEncryptedItems(load))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadAttempt() Error occurred trying to load Item" << std::endl;
#endif
return false;
}
/* set hash */
setHash(bio->gethash());
BinMemInterface *signbio = new BinMemInterface(1000, BIN_FLAGS_READABLE);
if(!signbio->readfromfile(signFname.c_str()))
return false;
std::string signatureStored((char *) signbio->memptr(), signbio->memsize());
std::string signatureRead;
std::string strHash(Hash());
AuthSSL::getAuthSSL()->SignData(strHash.c_str(), strHash.length(), signatureRead);
if(signatureRead != signatureStored)
return false;
delete signbio;
return true;
}
bool p3Config::loadGlobalConfig(std::string &loadHash)
{
bool pass = false;
std::string cfg_fname = Filename();
std::string cfg_fname_backup = cfg_fname + ".tmp";
std::string hashstr;
std::list<RsItem *> load;
#ifdef CONFIG_DEBUG
std::string success_fname = cfg_fname;
std::cerr << "p3Config::loadConfiguration(): Attempting to load configuration file" << cfg_fname << std::endl;
#endif
pass = getHashAttempt(loadHash, hashstr, cfg_fname, load);
if(!pass){
load.clear();
pass = getHashAttempt(loadHash, hashstr, cfg_fname_backup, load);
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration() ERROR: Failed to get Hash from " << success_fname << std::endl;
success_fname = cfg_fname_backup;
#endif
if(!pass){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration() ERROR: Failed to get Hash from " << success_fname << std::endl;
#endif
return false;
}
}
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration(): SUCCESS: configuration file loaded" << success_fname << std::endl;
#endif
setHash(hashstr);
return loadList(load);
}
bool p3Config::getHashAttempt(const std::string& loadHash, std::string& hashstr,const std::string& cfg_fname,
std::list<RsItem *>& load){
std::list<RsItem *>::iterator it;
uint32_t bioflags = BIN_FLAGS_HASH_DATA | BIN_FLAGS_READABLE;
BinInterface *bio = new BinFileInterface(cfg_fname.c_str(), bioflags);
PQInterface *stream = NULL;
std::string tempString, msgConfigFileName;
std::string filename = Filename() ;
std::string::reverse_iterator rit = filename.rbegin();
// get the msgconfig file name
for(int i =0; (i <= 7) && (rit != filename.rend()); i++)
{
tempString.push_back(*rit);
rit++;
}
rit = tempString.rbegin();
for(; rit !=tempString.rend(); rit++)
msgConfigFileName.push_back(*rit);
if(msgConfigFileName == "msgs.cfg")
stream = new pqiarchive(setupSerialiser(), bio, bioflags);
else
stream = new pqistore(setupSerialiser(), "CONFIG", bio, bioflags);
RsItem *item = NULL;
while(NULL != (item = stream->GetItem()))
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration() loaded item:";
std::cerr << std::endl;
item->print(std::cerr, 0);
std::cerr << std::endl;
#endif
load.push_back(item);
}
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration() loaded " << load.size();
std::cerr << " Elements from File: " << cfg_fname;
std::cerr << std::endl;
#endif
/* check hash */
hashstr = bio->gethash();
// if hash then atmpt load with temporary file
if (hashstr != loadHash)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::loadConfiguration() ERROR: Hash != MATCHloaded";
std::cerr << std::endl;
#endif
/* bad load */
for(it = load.begin(); it != load.end(); it++)
{
delete (*it);
}
setHash("");
return false;
}
delete stream;
return true;
}
bool p3Config::saveConfiguration()
{
return saveConfig();
}
bool p3Config::saveConfig()
{
bool cleanup = true;
std::list<RsItem *> toSave;
saveList(cleanup, toSave);
// temporarily append new to files as these will replace current configuration
std::string newCfgFname = Filename() + "_new";
std::string newSignFname = Filename() + ".sgn" + "_new";
std::string tmpCfgFname = Filename() + ".tmp";
std::string tmpSignFname = Filename() + ".sgn" + ".tmp";
std::string cfgFname = Filename();
std::string signFname = Filename() + ".sgn";
uint32_t bioflags = BIN_FLAGS_HASH_DATA | BIN_FLAGS_WRITEABLE;
uint32_t stream_flags = BIN_FLAGS_WRITEABLE;
bool written = true;
if (!cleanup)
stream_flags |= BIN_FLAGS_NO_DELETE;
BinEncryptedFileInterface *cfg_bio = new BinEncryptedFileInterface(newCfgFname.c_str(), bioflags);
pqiSSLstore *stream = new pqiSSLstore(setupSerialiser(), "CONFIG", cfg_bio, stream_flags);
written = written && stream->encryptedSendItems(toSave);
/* store the hash */
setHash(cfg_bio->gethash());
// bio is taken care of in stream's destructor, also forces file to close
delete stream;
/* sign data */
std::string signature;
std::string strHash(Hash());
AuthSSL::getAuthSSL()->SignData(strHash.c_str(),strHash.length(), signature);
/* write signature to configuration */
BinMemInterface *signbio = new BinMemInterface(signature.c_str(),
signature.length(), BIN_FLAGS_READABLE);
signbio->writetofile(newSignFname.c_str());
delete signbio;
// now rewrite current files to temp files
// rename back-up to current file
if(!RsDirUtil::renameFile(cfgFname, tmpCfgFname) || !RsDirUtil::renameFile(signFname, tmpSignFname)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() Failed to rename backup meta files: " << std::endl
<< cfgFname << " to " << tmpCfgFname << std::endl
<< signFname << " to " << tmpSignFname << std::endl;
#endif
written = false;
}
// now rewrite current files to temp files
// rename back-up to current file
if(!RsDirUtil::renameFile(newCfgFname, cfgFname) || !RsDirUtil::renameFile(newSignFname, signFname)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::() Failed to rename meta files: " << std::endl
<< newCfgFname << " to " << cfgFname << std::endl
<< newSignFname << " to " << signFname << std::endl;
#endif
written = false;
}
saveDone(); // callback to inherited class to unlock any Mutexes protecting saveList() data
return written;
}
bool p3Config::saveGlobalConfig()
{
bool cleanup = true;
std::list<RsItem *> toSave;
saveList(cleanup, toSave);
std::string cfg_fname = Filename(); // get configuration file name
std::string cfg_fname_backup = Filename()+".tmp"; // backup file for two pass save
#ifdef CONFIG_DEBUG
std::cerr << "Writting p3config file " << cfg_fname << std::endl ;
std::cerr << "p3Config::saveConfiguration() toSave " << toSave.size();
std::cerr << " Elements to File: " << cfg_fname;
std::cerr << std::endl;
#endif
// saves current config and keeps back-up (old configuration)
if(!backedUpFileSave(cfg_fname, cfg_fname_backup, toSave, cleanup)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::saveConfiguration(): Failed to save file" << std::endl;
#endif
return false;
}
saveDone(); // callback to inherited class to unlock any Mutexes protecting saveList() data
return true;
}
bool p3Config::backedUpFileSave(const std::string& cfg_fname, const std::string& cfg_fname_backup, std::list<RsItem* >& itemList,
bool cleanup){
uint32_t bioflags = BIN_FLAGS_HASH_DATA | BIN_FLAGS_WRITEABLE;
uint32_t stream_flags = BIN_FLAGS_WRITEABLE;
bool written = true;
FILE* cfg_file = NULL;
char* buff=NULL;
int size_file = 0;
if (!cleanup)
stream_flags |= BIN_FLAGS_NO_DELETE;
BinInterface *bio = new BinFileInterface(cfg_fname_backup.c_str(), bioflags);
pqistore *stream = new pqistore(setupSerialiser(), "CONFIG", bio, stream_flags);
std::list<RsItem *>::iterator it;
for(it = itemList.begin(); it != itemList.end(); it++)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() save item:";
std::cerr << std::endl;
(*it)->print(std::cerr, 0);
std::cerr << std::endl;
#endif
written = written && stream->SendItem(*it);
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() saved ";
#endif
}
/* store the hash */
setHash(bio->gethash());
// bio is taken care of in stream's destructor
delete stream;
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() Save file and keeps a back up " << std::endl;
#endif
// open file from which to collect buffer
cfg_file = RsDirUtil::rs_fopen(cfg_fname.c_str(), "rb");
// if it fails to open, create file,but back-up file will now be empty
if(cfg_file == NULL){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() fopen failed for file: " << cfg_fname << std::endl;
#endif
cfg_file = RsDirUtil::rs_fopen(cfg_fname.c_str(), "wb");
if(cfg_file == NULL)
{
std::cerr << "p3Config::backedUpFileSave() fopen failed for file:" << cfg_fname << std::endl;
return false ;
}
}
//determine file size
fseek(cfg_file, 0L, SEEK_END);
size_file = ftell(cfg_file);
if(size_file < 0) // ftell returns -1 when fails
{
fclose(cfg_file);
size_file = 0 ;
}
fseek(cfg_file, 0L, SEEK_SET);
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave(): Size of file: " << size_file << std::endl;
#endif
// no point continuing, empty files all have same hash
if(size_file > 0){
//read this into a data buffer
buff = new char[size_file];
fread(buff, 1, size_file, cfg_file);
}
fclose(cfg_file);
// rename back-up to current file, if this fails should return false hash's will not match at startup
if(!RsDirUtil::renameFile(cfg_fname_backup, cfg_fname)){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() Failed to rename file" << cfg_fname_backup << " to "
<< cfg_fname << std::endl;
#endif
written &= false; // at least one file save should be successful
}
if(size_file > 0)
{
// now write actual back-up file
cfg_file = RsDirUtil::rs_fopen(cfg_fname_backup.c_str(), "wb");
if(cfg_file == NULL){
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() fopen failed for file: " << cfg_fname_backup << std::endl;
#endif
}
if(size_file != fwrite(buff, 1, size_file, cfg_file))
{
getPqiNotify()->AddSysMessage(0, RS_SYS_WARNING, "Write error", "Error while writing backup configuration file " + cfg_fname_backup + "\nIs your disc full or out of quota ?");
fclose(cfg_file);
return false ;
}
fclose(cfg_file);
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() finished backed up save. " << std::endl;
#endif
delete[] buff;
written |= true; // either backup or current file should have been saved
}
#ifdef CONFIG_DEBUG
std::cerr << "p3Config::backedUpFileSave() finished backed up save. " << std::endl;
#endif
return written;
}
/**************************** CONFIGURATION CLASSES ********************/
p3GeneralConfig::p3GeneralConfig()
:p3Config(CONFIG_TYPE_GENERAL)
{
return;
}
// General Configuration System
std::string p3GeneralConfig::getSetting(std::string opt)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3GeneralConfig::getSetting(" << opt << ")";
std::cerr << std::endl;
#endif
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
/* extract from config */
std::map<std::string, std::string>::iterator it;
if (settings.end() == (it = settings.find(opt)))
{
std::string nullstring;
return nullstring;
}
return it->second;
}
void p3GeneralConfig::setSetting(std::string opt, std::string val)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3GeneralConfig::setSetting(" << opt << " = " << val << ")";
std::cerr << std::endl;
#endif
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
/* extract from config */
std::map<std::string, std::string>::iterator it;
if (settings.end() != (it = settings.find(opt)))
{
if (it->second == val)
{
/* no change */
return;
}
}
settings[opt] = val;
}
/* outside mutex */
IndicateConfigChanged();
return;
}
RsSerialiser *p3GeneralConfig::setupSerialiser()
{
RsSerialiser *rss = new RsSerialiser();
rss->addSerialType(new RsGeneralConfigSerialiser());
return rss;
}
bool p3GeneralConfig::saveList(bool &cleanup, std::list<RsItem *>& savelist)
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
#ifdef CONFIG_DEBUG
std::cerr << "p3GeneralConfig::saveList() KV sets: " << settings.size();
std::cerr << std::endl;
#endif
cleanup = true;
RsConfigKeyValueSet *item = new RsConfigKeyValueSet();
std::map<std::string, std::string>::iterator it;
for(it = settings.begin(); it != settings.end(); it++)
{
RsTlvKeyValue kv;
kv.key = it->first;
kv.value = it->second;
item->tlvkvs.pairs.push_back(kv);
/* make sure we don't overload it */
if (item->tlvkvs.TlvSize() > 4000)
{
savelist.push_back(item);
item = new RsConfigKeyValueSet();
}
}
if (item->tlvkvs.pairs.size() > 0)
{
savelist.push_back(item);
}
return true;
}
bool p3GeneralConfig::loadList(std::list<RsItem *>& load)
{
#ifdef CONFIG_DEBUG
std::cerr << "p3GeneralConfig::loadList() count: " << load.size();
std::cerr << std::endl;
#endif
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
/* add into settings */
RsConfigKeyValueSet *item = NULL;
std::list<RsItem *>::iterator it;
std::list<RsTlvKeyValue>::iterator kit;
for(it = load.begin(); it != load.end();)
{
item = dynamic_cast<RsConfigKeyValueSet *>(*it);
if (item)
{
for(kit = item->tlvkvs.pairs.begin();
kit != item->tlvkvs.pairs.end(); kit++)
{
settings[kit->key] = kit->value;
}
}
/* cleanup */
delete (*it);
it = load.erase(it);
}
return true;
}
/**** MUTEX NOTE:
* have protected all, but think that
* only the Indication and hash really need it
*/
bool pqiConfig::globalConfigType = false;
pqiConfig::pqiConfig(uint32_t t)
: cfgMtx("pqiConfig"), ConfInd(2), type(t)
{
return;
}
pqiConfig::~pqiConfig()
{
return;
}
uint32_t pqiConfig::Type()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
return type;
}
const std::string& pqiConfig::Filename()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
return filename;
}
const std::string& pqiConfig::Hash()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
return hash;
}
void pqiConfig::IndicateConfigChanged()
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
ConfInd.IndicateChanged();
}
bool pqiConfig::HasConfigChanged(uint16_t idx)
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
return ConfInd.Changed(idx);
}
void pqiConfig::setFilename(std::string name)
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
filename = name;
}
void pqiConfig::setHash(std::string h)
{
RsStackMutex stack(cfgMtx); /***** LOCK STACK MUTEX ****/
hash = h;
}
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