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/***************************************************************************
* fqterm, a terminal emulator for both BBS and *nix. *
* Copyright (C) 2008 fqterm development group. *
* *
* 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., *
* 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. *
***************************************************************************/
#include <QString>
#include <QRegExp>
#include <QDir>
#include <QStringList>
#include <ctype.h>
#ifdef Q_OS_WIN32
#include <winsock2.h>
#else
#include <netinet/in.h>
#include <arpa/inet.h>
#endif
#include "fqterm_trace.h"
#include "fqterm_ip_location.h"
#include "fqterm_path.h"
#include "fqterm.h"
namespace FQTerm {
FQTermIPLocation* FQTermIPLocation::instance_ = NULL;
FQTermIPLocation::FQTermIPLocation(const QString &pathLib) {
ipDatabase_ = new IPDatabase;
ipDatabase_->ipfp = NULL;
isFileExiting_ = true;
//case-insensitive match
QDir dir(pathLib);
QStringList files = dir.entryList(QStringList(
"[Qq][Qq][Ww][Rr][Yy].[Dd][Aa][Tt]"), QDir::Files);
if (!files.isEmpty()) {
if ((ipDatabase_->ipfp = fopen((pathLib + (files.at(0))).toLocal8Bit(), "rb")) == NULL) {
FQ_TRACE("iplocation", 0) << "Can't open ip database file!";
isFileExiting_ = false;
}
} else {
isFileExiting_ = false;
}
}
FQTermIPLocation::~FQTermIPLocation() {
if (ipDatabase_->ipfp != NULL) {
fclose(ipDatabase_->ipfp);
}
delete ipDatabase_;
}
uint32 FQTermIPLocation::byteArrayToInt(char *ip, int count) {
uint32 tmp, ret = 0L;
if (count < 1 || count > 4) {
FQ_TRACE("iplocation", 0) << "byteArrayToInt() error!";
return 0;
}
for (int i = 0; i < count; i++) {
tmp = ((uint32)ip[i]) &0x000000FF;
ret |= (tmp << (8 *i));
}
return ret;
}
void FQTermIPLocation::readFrom(FILE *fp, uint32 offset, char *buf, int len) {
if (fseek(fp, (long)offset, SEEK_SET) == -1) {
FQ_TRACE("iplocation", 0) << "readFrom() error 1";
memset(buf, 0, len);
return ;
}
if (fread(buf, sizeof(char), len, fp) == 0) {
FQ_TRACE("iplocation", 0) << "readFrom() error 2";
memset(buf, 0, len);
return ;
}
return ;
}
int FQTermIPLocation::readLineFrom(FILE *fp, uint32 offset, QByteArray &ret_str) {
char str[512];
if (fseek(fp, (long)offset, SEEK_SET) == -1) {
FQ_TRACE("iplocation", 0) << "readLineFrom error 1";
ret_str = QByteArray();
return -1;
}
if (fgets((char*)str, 512, fp) == NULL) {
FQ_TRACE("iplocation", 0) << "readLineFrom error 2";
ret_str = QByteArray();
return -1;
}
ret_str = QByteArray(str);
return (ret_str.length());
}
uint32 FQTermIPLocation::getString(FILE *fp, uint32 offset, uint32 lastoffset,
QByteArray &ret, unsigned int flag, int maxRecursiveDepth) {
if (maxRecursiveDepth <= 0)
return 0;
unsigned int fg;
if (fp == NULL) {
return 0;
}
char buf[3] = {0};
readFrom(fp, offset, buf, 1);
if (buf[0] == 0x01 || buf[0] == 0x02) {
fg = buf[0];
readFrom(fp, offset + 1, buf, 3);
return getString(fp, byteArrayToInt(buf, 3), offset, ret, fg, maxRecursiveDepth - 1);
} else {
readLineFrom(fp, offset, ret);
}
switch (flag) {
case 0x01:
return 0;
case 0x02:
return lastoffset + 4;
default:
return offset + ret.length() + 1;
}
}
void FQTermIPLocation::getCountryCity(FILE *fp, uint32 offset, QByteArray &country,
QByteArray &city) {
uint32 next_offset;
if (fp == NULL) {
return ;
}
next_offset = getString(fp, offset, 0L, country, 0);
if (next_offset == 0) {
city = "";
} else {
getString(fp, next_offset, 0L, city, 0);
}
return ;
}
void FQTermIPLocation::setIpRange(int rec_no, IPDatabase *f) {
uint32 offset;
if (f == NULL) {
return ;
}
char buf[7] = {0};
offset = f->offset_first_start_ip + rec_no * 7;
readFrom(f->ipfp, offset, buf, 7);
f->cur_start_ip = byteArrayToInt(buf, 4);
f->offset_cur_end_ip = byteArrayToInt(buf + 4, 3);
readFrom(f->ipfp, f->offset_cur_end_ip, buf, 4);
f->cur_end_ip = byteArrayToInt(buf, 4);
}
bool FQTermIPLocation::getLocation(QString &url, QString &country, QString &city)
{
QByteArray gbCountry, gbCity;
bool result = getLocation(url, gbCountry, gbCity);
country = encoding2unicode(gbCountry, FQTERM_ENCODING_GBK);
city = encoding2unicode(gbCity, FQTERM_ENCODING_GBK);
return result;
}
bool FQTermIPLocation::getLocation(QString &url, QByteArray &country,
QByteArray &city) {
int rec, record_count, B, E;
uint32 ip;
#ifdef Q_OS_WIN32
uint32 ipValue = inet_addr((const char*)url.toLatin1());
#else
in_addr_t ipValue = inet_addr((const char*)url.toLatin1());
#endif
if ((int)ipValue == -1) {
return false;
} else {
ip = ntohl(ipValue);
}
char buf[4] = {0};
readFrom(ipDatabase_->ipfp, 0L, (char*)buf, 4);
ipDatabase_->offset_first_start_ip = byteArrayToInt((char*)buf, 4);
readFrom(ipDatabase_->ipfp, 4L, (char*)buf, 4);
ipDatabase_->offset_last_start_ip = byteArrayToInt((char*)buf, 4);
record_count = (ipDatabase_->offset_last_start_ip - ipDatabase_->offset_first_start_ip) / 7;
if (record_count <= 1) {
return false;
}
// search for right range
B = 0;
E = record_count;
while (B < E-1) {
rec = (B + E) / 2;
setIpRange(rec, ipDatabase_);
if (ip == ipDatabase_->cur_start_ip) {
B = rec;
break;
}
if (ip > ipDatabase_->cur_start_ip) {
B = rec;
} else {
E = rec;
}
}
setIpRange(B, ipDatabase_);
if (ipDatabase_->cur_start_ip <= ip && ip <= ipDatabase_->cur_end_ip) {
getCountryCity(ipDatabase_->ipfp, ipDatabase_->offset_cur_end_ip + 4, country, city);
//country.replace( country.find( "CZ88.NET", 0, false ), 8, "" );
if ((rec = country.toUpper().indexOf("CZ88.NET", 0)) >= 0) {
country.replace(rec, 8, "********");
}
if ((rec = city.toUpper().indexOf("CZ88.NET", 0)) >= 0) {
city.replace(rec, 8, "********");
}
} else {
// not in this range... miss
country = "unknown";
city = "";
}
// if ip_start<=ip<=ip_end
return true;
}
FQTermIPLocation* FQTermIPLocation::getInstance() {
if (instance_ == NULL) {
instance_ = new FQTermIPLocation(getPath(USER_CONFIG));
if (instance_->isFileExiting_ == false) {
delete instance_;
instance_ = new FQTermIPLocation(getPath(RESOURCE));
if (instance_->isFileExiting_ == false) {
delete instance_;
instance_ = NULL;
}
}
}
return instance_;
}
void FQTermIPLocation::Destroy() {
delete instance_;
instance_ = NULL;
}
} // namespace FQTerm
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