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urbackup_backend/urbackupserver/serverinterface/status.cpp

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/*************************************************************************
* UrBackup - Client/Server backup system
* Copyright (C) 2011-2016 Martin Raiber
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
**************************************************************************/
#ifndef CLIENT_ONLY
#include "action_header.h"
#include "../server_settings.h"
#include "../../urbackupcommon/os_functions.h"
#include "../server_status.h"
#include "../../cryptoplugin/ICryptoFactory.h"
#include "../server.h"
#include <algorithm>
#include <memory>
extern ICryptoFactory *crypto_fak;
namespace
{
bool client_download(Helper& helper, JSON::Array &client_downloads)
{
IDatabase *db=helper.getDatabase();
ServerSettings settings(db);
if(!FileExists("urbackup/UrBackupUpdate.exe"))
return false;
if(!FileExists("urbackup/UrBackupUpdate.sig2"))
return false;
if(crypto_fak==NULL)
return false;
bool clientid_rights_all;
std::vector<int> clientid_rights=helper.clientRights(RIGHT_SETTINGS, clientid_rights_all);
db_results res=db->Read("SELECT id, name FROM clients ORDER BY name");
bool has_client=false;
for(size_t i=0;i<res.size();++i)
{
int clientid=watoi(res[i]["id"]);
std::string clientname=res[i]["name"];
bool found=false;
if( (clientid_rights_all
|| std::find(clientid_rights.begin(), clientid_rights.end(), clientid)!=clientid_rights.end()
) /*&& ServerStatus::getStatus(clientname).online==false*/ )
{
JSON::Object obj;
obj.set("id", clientid);
obj.set("name", clientname);
client_downloads.add(obj);
has_client=true;
}
}
return has_client;
}
std::string get_stop_show_version(IDatabase *db)
{
db_results res = db->Read("SELECT tvalue FROM misc WHERE tkey='stop_show_version'");
if (!res.empty())
{
return res[0]["tvalue"];
}
return std::string();
}
void set_server_version_info(IDatabase* db, JSON::Object& ret)
{
std::auto_ptr<ISettingsReader> infoProperties(Server->createFileSettingsReader("urbackup/server_version_info.properties"));
if(infoProperties.get())
{
std::string stop_show_version = get_stop_show_version(db);
std::string curr_version_str;
if (infoProperties->getValue("curr_version_str", &curr_version_str))
{
if (stop_show_version != curr_version_str)
{
ret.set("curr_version_str", curr_version_str);
std::string curr_version_num;
if (infoProperties->getValue("curr_version_num", &curr_version_num))
{
ret.set("curr_version_num", watoi64(curr_version_num));
}
}
}
}
}
void access_dir_details(std::string folder, std::string& ret)
{
bool has_error = false;
getFiles(folder, &has_error);
if (has_error)
{
ret += "Cannot access " + folder + ". " + os_last_error_str() + "\n";
}
else
{
ret += "Can access " + folder + "\n";
}
}
std::string access_err_details(std::string folder)
{
std::vector<std::string> toks;
TokenizeMail(folder, toks, os_file_sep());
std::string ret;
std::string cdir = os_file_sep();
access_dir_details(cdir, ret);
for (size_t i = 0; i < toks.size(); ++i)
{
if (toks[i].empty()) continue;
if (cdir!=os_file_sep())
{
cdir += os_file_sep();
}
cdir += toks[i];
access_dir_details(cdir, ret);
}
return ret;
}
std::string access_dir_hint(std::string folder)
{
if (folder.size() > 1 && folder[1] == ':')
{
bool has_error = false;
getFiles(folder.substr(0, 2) + os_file_sep(), &has_error);
if (has_error)
{
return "volume_not_accessible";
}
}
if ( (folder.size() > 2 && folder[0] == '\\'
&& folder[1] == '\\'
&& folder[2] != '?' )
|| next(folder, 0, "\\\\?\\UNC") )
{
bool has_error = false;
getFiles(folder, &has_error);
if (has_error && os_last_error() == 5
|| os_last_error()== 1326 )
{
return "folder_unc_access_denied";
}
}
return std::string();
}
void add_remove_stop_show(IDatabase* db, std::string stop_show, bool add)
{
db_results res = db->Read("SELECT tvalue FROM misc WHERE tkey='stop_show'");
if (!res.empty())
{
std::vector<std::string> toks;
TokenizeMail(res[0]["tvalue"], toks, ",");
std::vector<std::string>::iterator it = std::find(toks.begin(), toks.end(), stop_show);
if (add)
{
if (it == toks.end())
{
toks.push_back(stop_show);
}
}
else
{
if (it != toks.end())
{
toks.erase(it);
}
}
std::string nval;
for (size_t i = 0; i < toks.size(); ++i)
{
if (!nval.empty()) nval += ",";
nval += toks[i];
}
IQuery* q = db->Prepare("UPDATE misc SET tvalue=? WHERE tkey='stop_show'");
q->Bind(nval);
q->Write();
q->Reset();
}
else
{
IQuery* q = db->Prepare("INSERT INTO misc (tkey, tvalue) VALUES ('stop_show', ?)");
q->Bind(stop_show);
q->Write();
q->Reset();
}
}
bool is_stop_show(IDatabase* db, std::string stop_key)
{
db_results res = db->Read("SELECT tvalue FROM misc WHERE tkey='stop_show'");
if (!res.empty())
{
std::vector<std::string> toks;
TokenizeMail(res[0]["tvalue"], toks, ",");
return std::find(toks.begin(), toks.end(), stop_key) != toks.end();
}
return false;
}
void set_stop_show_version(IDatabase* db, std::string ver)
{
db_results res = db->Read("SELECT tvalue FROM misc WHERE tkey='stop_show_version'");
if (!res.empty())
{
IQuery* q = db->Prepare("UPDATE misc SET tvalue=? WHERE tkey='stop_show_version'");
q->Bind(ver);
q->Write();
q->Reset();
}
else
{
IQuery* q = db->Prepare("INSERT INTO misc (tkey, tvalue) VALUES ('stop_show_version', ?)");
q->Bind(ver);
q->Write();
q->Reset();
}
}
void add_stop_show(IDatabase* db, JSON::Object& ret, std::string dir_error_stop_show_key)
{
ret.set("dir_error_stop_show_key", dir_error_stop_show_key);
if (is_stop_show(db, dir_error_stop_show_key))
{
ret.set("dir_error_show", false);
}
}
void access_dir_checks(IDatabase* db, ServerSettings& settings, std::string backupfolder, std::string backupfolder_uncompr,
JSON::Object& ret)
{
#ifdef _WIN32
if (backupfolder.size() == 2 && backupfolder[1] == ':')
{
backupfolder += os_file_sep();
}
if (backupfolder_uncompr.size() == 2 && backupfolder_uncompr[1] == ':')
{
backupfolder_uncompr += os_file_sep();
}
#endif
if (backupfolder.empty() || !os_directory_exists(os_file_prefix(backupfolder)) || !os_directory_exists(os_file_prefix(backupfolder_uncompr)))
{
if (!backupfolder.empty())
{
ret.set("system_err", os_last_error_str());
}
ret.set("dir_error", true);
if (settings.getSettings()->backupfolder.empty())
{
ret.set("dir_error_ext", "err_name_empty");
}
else if (!os_directory_exists(os_file_prefix(settings.getSettings()->backupfolder)))
{
ret.set("dir_error_ext", "err_folder_not_found");
add_stop_show(db, ret, "dir_error_not_found");
}
else
{
add_stop_show(db, ret, "dir_error_misc");
}
#ifdef _WIN32
std::string hint = access_dir_hint(settings.getSettings()->backupfolder);
if (!hint.empty())
{
ret.set("dir_error_hint", hint);
}
#endif
#ifndef _WIN32
ret.set("detail_err_str", access_err_details(settings.getSettings()->backupfolder));
#endif
}
else if (!os_directory_exists(os_file_prefix(backupfolder + os_file_sep() + "clients")) && !os_create_dir(os_file_prefix(backupfolder + os_file_sep() + "clients")))
{
ret.set("system_err", os_last_error_str());
ret.set("dir_error", true);
ret.set("dir_error_ext", "err_cannot_create_subdir");
add_stop_show(db, ret, "dir_error_cannot_create_subdir");
#ifdef _WIN32
std::string hint = access_dir_hint(backupfolder);
if (!hint.empty())
{
ret.set("dir_error_hint", hint);
}
#endif
}
else
{
bool has_access_error = false;
std::string testfoldername = "testfolderHvfgh---dFFoeRRRf";
std::string testfolderpath = backupfolder + os_file_sep() + testfoldername;
if (os_directory_exists(os_file_prefix(testfolderpath)))
{
if (!os_remove_dir(os_file_prefix(testfolderpath)))
{
ret.set("system_err", os_last_error_str());
ret.set("dir_error", true);
ret.set("dir_error_ext", "err_cannot_create_subdir");
add_stop_show(db, ret, "dir_error_cannot_create_subdir2");
has_access_error = true;
#ifdef _WIN32
std::string hint = access_dir_hint(backupfolder);
if (!hint.empty())
{
ret.set("dir_error_hint", hint);
}
#endif
}
}
if (!has_access_error
&& !os_create_dir(os_file_prefix(testfolderpath)))
{
ret.set("system_err", os_last_error_str());
ret.set("dir_error", true);
ret.set("dir_error_ext", "err_cannot_create_subdir");
add_stop_show(db, ret, "dir_error_cannot_create_subdir3");
#ifdef _WIN32
std::string hint = access_dir_hint(backupfolder);
if (!hint.empty())
{
ret.set("dir_error_hint", hint);
}
#endif
has_access_error = true;
}
if (!settings.getSettings()->no_file_backups)
{
std::string linkfolderpath = testfolderpath + "_link";
os_remove_symlink_dir(os_file_prefix(linkfolderpath));
Server->deleteFile(os_file_prefix(linkfolderpath));
if (!has_access_error
&& !os_link_symbolic(os_file_prefix(testfolderpath), os_file_prefix(linkfolderpath)))
{
ret.set("system_err", os_last_error_str());
ret.set("dir_error", true);
ret.set("dir_error_ext", "err_cannot_create_symbolic_links");
ret.set("dir_error_hint", "UrBackup cannot create symbolic links on the backup storage. "
"Your backup storage must support symbolic links in order for UrBackup to work correctly. "
"The UrBackup Server must run as administrative user on Windows (If not you get error code 1314). "
"Note: As of 2016-05-07 samba (which is used by many Linux based NAS operating systems for Windows file sharing) has not "
"implemented the necessary functionality to support symbolic link creation from Windows (With this you get error code 4390).");
add_stop_show(db, ret, "dir_error_cannot_create_symbolic_links");
}
os_remove_symlink_dir(os_file_prefix(linkfolderpath));
}
if (!has_access_error
&& !os_remove_dir(os_file_prefix(testfolderpath)))
{
ret.set("system_err", os_last_error_str());
ret.set("dir_error", true);
ret.set("dir_error_ext", "err_cannot_create_subdir");
add_stop_show(db, ret, "dir_error_cannot_create_subdir4");
has_access_error = true;
}
}
IFile *tmp = Server->openTemporaryFile();
ScopedDeleteFile delete_tmp_file(tmp);
if (tmp == NULL)
{
ret.set("tmpdir_error", true);
ret.set("tmpdir_error_stop_show_key", "tmpdir_error");
if (is_stop_show(db, "tmpdir_error"))
{
ret.set("tmpdir_error_show", false);
}
}
}
}
ACTION_IMPL(status)
{
Helper helper(tid, &POST, &PARAMS);
JSON::Object ret;
std::string rights=helper.getRights("status");
std::vector<int> clientids;
IDatabase *db=helper.getDatabase();
if(rights!="all" && rights!="none" )
{
std::vector<std::string> s_clientid;
Tokenize(rights, s_clientid, ",");
for(size_t i=0;i<s_clientid.size();++i)
{
clientids.push_back(atoi(s_clientid[i].c_str()));
}
}
SUser *session=helper.getSession();
if(session!=NULL && session->id==SESSION_ID_INVALID) return;
if(session!=NULL && (rights=="all" || !clientids.empty()) )
{
if (rights == "all" && POST.find("stop_show") != POST.end())
{
add_remove_stop_show(db, POST["stop_show"], true);
}
if (rights == "all" && POST.find("stop_show_version") != POST.end())
{
set_stop_show_version(db, POST["stop_show_version"]);
}
if (rights == "all" && POST.find("reset_error") != POST.end())
{
std::string reset_error = POST["reset_error"];
if (reset_error == "nospc_stalled")
{
ServerStatus::resetServerNospcStalled();
}
else if (reset_error == "nospc_fatal")
{
ServerStatus::setServerNospcFatal(false);
}
else if (reset_error == "database_error")
{
Server->clearFailBit(IServer::FAIL_DATABASE_CORRUPTED);
Server->clearFailBit(IServer::FAIL_DATABASE_IOERR);
Server->clearFailBit(IServer::FAIL_DATABASE_FULL);
}
}
if(rights=="all")
{
ServerSettings settings(db);
access_dir_checks(db, settings, settings.getSettings()->backupfolder,
settings.getSettings()->backupfolder_uncompr, ret);
if(ServerStatus::getServerNospcStalled()>0)
{
ret.set("nospc_stalled" ,true);
}
if(ServerStatus::getServerNospcFatal())
{
ret.set("nospc_fatal" ,true);
}
if( (Server->getFailBits() & IServer::FAIL_DATABASE_CORRUPTED) ||
(Server->getFailBits() & IServer::FAIL_DATABASE_IOERR) ||
(Server->getFailBits() & IServer::FAIL_DATABASE_FULL) )
{
ret.set("database_error", true);
}
}
std::string hostname=POST["hostname"];
if(!hostname.empty() && rights=="all")
{
if(POST["remove"]=="true")
{
IQuery *q=db->Prepare("DELETE FROM settings_db.extra_clients WHERE id=?");
q->Bind(hostname);
q->Write();
q->Reset();
}
else
{
IQuery *q=db->Prepare("INSERT INTO settings_db.extra_clients (hostname) SELECT ? AS hostname WHERE NOT EXISTS (SELECT hostname FROM settings_db.extra_clients WHERE hostname=?)");
q->Bind(hostname);
q->Bind(hostname);
q->Write();
q->Reset();
}
}
std::string s_remove_client=POST["remove_client"];
if(!s_remove_client.empty() && helper.getRights("remove_client")=="all")
{
std::vector<std::string> remove_client;
Tokenize(s_remove_client, remove_client, ",");
if(POST.find("stop_remove_client")!=POST.end())
{
for(size_t i=0;i<remove_client.size();++i)
{
IQuery *q=db->Prepare("UPDATE clients SET delete_pending=0 WHERE id=?");
q->Bind(remove_client[i]);
q->Write();
q->Reset();
}
}
else
{
for(size_t i=0;i<remove_client.size();++i)
{
IQuery *q=db->Prepare("UPDATE clients SET delete_pending=1 WHERE id=? OR virtualmain = (SELECT name FROM clients WHERE id=?)");
q->Bind(remove_client[i]);
q->Bind(remove_client[i]);
q->Write();
q->Reset();
}
}
BackupServer::updateDeletePending();
}
JSON::Array status;
IDatabase *db=helper.getDatabase();
std::string filter;
if(!clientids.empty())
{
filter=" WHERE ";
for(size_t i=0;i<clientids.size();++i)
{
filter+="c.id="+convert(clientids[i]);
if(i+1<clientids.size())
filter+=" OR ";
}
}
db_results res=db->Read("SELECT c.id AS id, delete_pending, c.name AS name, strftime('"+helper.getTimeFormatString()+"', lastbackup) AS lastbackup, strftime('"+helper.getTimeFormatString()+"', lastseen) AS lastseen,"
"strftime('"+helper.getTimeFormatString()+"', lastbackup_image) AS lastbackup_image, last_filebackup_issues, os_simple, os_version_str, client_version_str, cg.name AS groupname FROM "
" clients c LEFT OUTER JOIN settings_db.si_client_groups cg ON c.groupid = cg.id "+filter+" ORDER BY name");
double backup_ok_mod_file=3.;
db_results res_t=db->Read("SELECT value FROM settings_db.settings WHERE key='backup_ok_mod_file' AND clientid=0");
if(res_t.size()>0)
{
backup_ok_mod_file=atof((res_t[0]["value"]).c_str());
}
double backup_ok_mod_image=3.;
res_t=db->Read("SELECT value FROM settings_db.settings WHERE key='backup_ok_mod_image' AND clientid=0");
if(res_t.size()>0)
{
backup_ok_mod_image=atof((res_t[0]["value"]).c_str());
}
std::vector<SStatus> client_status=ServerStatus::getStatus();
for(size_t i=0;i<res.size();++i)
{
JSON::Object stat;
int clientid=watoi(res[i]["id"]);
std::string clientname=res[i]["name"];
stat.set("id", clientid);
stat.set("name", clientname);
stat.set("lastbackup", watoi64(res[i]["lastbackup"]));
stat.set("lastbackup_image", watoi64(res[i]["lastbackup_image"]));
stat.set("delete_pending", res[i]["delete_pending"] );
stat.set("last_filebackup_issues", watoi(res[i]["last_filebackup_issues"]));
stat.set("groupname", res[i]["groupname"]);
std::string ip="-";
std::string client_version_string = res[i]["client_version_str"];
std::string os_version_string = res[i]["os_version_str"];
std::string os_simple = res[i]["os_simple"];
int i_status=0;
bool online=false;
SStatus *curr_status=NULL;
JSON::Array processes;
int64 lastseen = watoi64(res[i]["lastseen"]);
for(size_t j=0;j<client_status.size();++j)
{
if(client_status[j].client==clientname)
{
if(client_status[j].r_online==true)
{
curr_status=&client_status[j];
online=true;
}
unsigned char *ips=(unsigned char*)&client_status[j].ip_addr;
ip=convert(ips[0])+"."+convert(ips[1])+"."+convert(ips[2])+"."+convert(ips[3]);
client_version_string=client_status[j].client_version_string;
os_version_string=client_status[j].os_version_string;
if (client_status[j].lastseen > lastseen)
{
lastseen = client_status[j].lastseen;
}
switch(client_status[j].status_error)
{
case se_ident_error:
i_status=11; break;
case se_too_many_clients:
i_status=12; break;
case se_authentication_error:
i_status=13; break;
default:
if(!client_status[j].processes.empty())
{
i_status = client_status[j].processes[0].action;
}
}
for(size_t k=0;k<client_status[j].processes.size();++k)
{
SProcess& process = client_status[j].processes[k];
JSON::Object proc;
proc.set("action", process.action);
proc.set("pcdone", process.pcdone);
processes.add(proc);
}
}
}
stat.set("online", online);
stat.set("ip", ip);
stat.set("client_version_string", client_version_string);
stat.set("os_version_string", os_version_string);
stat.set("os_simple", os_simple);
stat.set("status", i_status);
stat.set("processes", processes);
stat.set("lastseen", lastseen);
ServerSettings settings(db, clientid);
int time_filebackup=settings.getUpdateFreqFileIncr();
int time_filebackup_full=settings.getUpdateFreqFileFull();
if( time_filebackup_full>=0 &&
(time_filebackup<0 || time_filebackup_full<time_filebackup) )
{
time_filebackup=time_filebackup_full;
}
IQuery *q=db->Prepare("SELECT id FROM clients WHERE lastbackup IS NOT NULL AND datetime('now','-"+convert((int)(time_filebackup*backup_ok_mod_file+0.5))+" seconds')<lastbackup AND id=?");
q->Bind(clientid);
db_results res_file_ok=q->Read();
q->Reset();
stat.set("file_ok", !res_file_ok.empty());
int time_imagebackup=settings.getUpdateFreqImageIncr();
int time_imagebackup_full=settings.getUpdateFreqImageFull();
if( time_imagebackup_full>=0 &&
(time_imagebackup<0 || time_imagebackup_full<time_imagebackup) )
{
time_imagebackup=time_imagebackup_full;
}
q=db->Prepare("SELECT id FROM clients WHERE lastbackup_image IS NOT NULL AND datetime('now','-"+convert((int)(time_imagebackup*backup_ok_mod_image+0.5))+" seconds')<lastbackup_image AND id=?");
q->Bind(clientid);
res_file_ok=q->Read();
q->Reset();
stat.set("image_ok", !res_file_ok.empty());
status.add(stat);
}
if(rights=="all")
{
bool has_ident_error_clients = false;
for(size_t i=0;i<client_status.size();++i)
{
bool found=false;
for(size_t j=0;j<res.size();++j)
{
if(res[j]["name"]==client_status[i].client)
{
found=true;
break;
}
}
if(found || client_status[i].client.empty()) continue;
JSON::Object stat;
stat.set("id", (std::string)"-");
stat.set("name", client_status[i].client);
stat.set("lastbackup", (std::string)"-");
stat.set("lastseen", (std::string)"-");
stat.set("lastbackup_image", (std::string)"-");
stat.set("online", client_status[i].r_online);
stat.set("delete_pending", 0);
std::string ip;
unsigned char *ips=(unsigned char*)&client_status[i].ip_addr;
ip=convert(ips[0])+"."+convert(ips[1])+"."+convert(ips[2])+"."+convert(ips[3]);
stat.set("ip", ip);
switch(client_status[i].status_error)
{
case se_ident_error:
stat.set("status", 11);
has_ident_error_clients = true;
break;
case se_too_many_clients:
stat.set("status", 12); break;
case se_authentication_error:
stat.set("status", 13); break;
default:
stat.set("status", 10); break;
}
stat.set("file_ok", false);
stat.set("image_ok", false);
stat.set("rejected", true);
status.add(stat);
}
if (has_ident_error_clients)
{
ret.set("has_ident_error_clients", true);
ret.set("has_ident_error_clients_stop_show_key", "has_ident_error_clients");
if (is_stop_show(db, "has_ident_error_clients"))
{
ret.set("show_has_ident_error_clients", false);
}
}
}
JSON::Array extra_clients;
if(rights=="all")
{
res=db->Read("SELECT id, hostname, lastip FROM settings_db.extra_clients");
for(size_t i=0;i<res.size();++i)
{
JSON::Object extra_client;
extra_client.set("hostname", res[i]["hostname"]);
_i64 i_ip=os_atoi64(res[i]["lastip"]);
bool online=false;
for(size_t j=0;j<client_status.size();++j)
{
if(i_ip==(_i64)client_status[j].ip_addr)
{
online=true;
}
}
extra_client.set("id", res[i]["id"]);
extra_client.set("online", online);
extra_clients.add(extra_client);
}
ret.set("allow_extra_clients", true);
ret.set("allow_modify_clients", true);
}
ret.set("status", status);
ret.set("extra_clients", extra_clients);
ret.set("server_identity", helper.getStrippedServerIdentity());
if(helper.getRights("remove_client")=="all")
{
ret.set("allow_modify_clients", true);
ret.set("remove_client", true);
}
if(helper.getRights("start_backup")=="all")
{
ret.set("allow_modify_clients", true);
}
if (helper.getRights("add_client") == "all")
{
ret.set("allow_add_client", true);
}
JSON::Array client_downloads;
if(client_download(helper, client_downloads))
{
ret.set("client_downloads", client_downloads);
}
ServerSettings settings(db);
ret.set("no_images", settings.getSettings()->no_images);
ret.set("no_file_backups", settings.getSettings()->no_file_backups);
if(helper.getRights("all")=="all")
{
ret.set("admin", JSON::Value(true));
set_server_version_info(db, ret);
}
if(is_big_endian())
{
ret.set("big_endian", true);
}
}
else
{
ret.set("error", 1);
}
helper.Write(ret.stringify(false));
}
#endif //CLIENT_ONLY
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