/
find.go
422 lines (371 loc) · 11.9 KB
/
find.go
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/*
* Copyright (c) 2023 shenjunzheng@gmail.com
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package ips
import (
"bytes"
"encoding/json"
"net"
"net/url"
"path/filepath"
"strings"
log "github.com/sirupsen/logrus"
"github.com/sjzar/ips/domainlist"
"github.com/sjzar/ips/format"
"github.com/sjzar/ips/format/mmdb"
"github.com/sjzar/ips/format/qqwry"
"github.com/sjzar/ips/internal/data"
"github.com/sjzar/ips/internal/ipio"
"github.com/sjzar/ips/internal/operate"
"github.com/sjzar/ips/internal/parser"
"github.com/sjzar/ips/internal/util"
"github.com/sjzar/ips/pkg/errors"
"github.com/sjzar/ips/pkg/model"
)
// ParseText takes a text input, parses it into segments, and returns the serialized result
// based on the Manager configuration. It returns the combined result as a string.
func (m *Manager) ParseText(text string) (string, error) {
tp := parser.NewTextParser(text).Parse()
infoList := make([]interface{}, 0, len(tp.Segments))
for _, segment := range tp.Segments {
info, err := m.parseSegment(segment)
if err != nil {
log.Debug("m.parseSegment error: ", err)
return "", err
}
infoList = append(infoList, info)
}
result, err := m.serialize(infoList)
if err != nil {
log.Debug("m.serialize error: ", err)
return "", err
}
return result, nil
}
// parseSegment processes the provided segment and returns the corresponding data.
// This could be IP information, domain information, or raw text.
func (m *Manager) parseSegment(segment parser.Segment) (interface{}, error) {
switch segment.Type {
case parser.TextTypeIPv4, parser.TextTypeIPv6:
return m.parseIP(segment.Content)
case parser.TextTypeDomain:
return m.parseDomain(segment.Content)
case parser.TextTypeText:
return segment.Content, nil
}
return nil, nil
}
// parseIP determines the type of IP (IPv4 or IPv6) and fetches the corresponding information.
func (m *Manager) parseIP(content string) (*model.IPInfo, error) {
if ip := net.ParseIP(content); ip != nil {
if ip.To4() != nil {
return m.parseIPv4(ip)
}
return m.parseIPv6(ip)
}
return nil, errors.ErrInvalidIP
}
// parseIPv4 finds and returns the information associated with the provided IPv4 address.
func (m *Manager) parseIPv4(ip net.IP) (*model.IPInfo, error) {
// lazyLoad initializes the IP readers if they haven't been initialized yet.
if m.ipv4 == nil {
var err error
if m.ipv4, err = m.createReader(m.Conf.IPv4Format, m.Conf.IPv4File, false); err != nil {
log.Debug("createReader error: ", err)
return nil, err
}
}
return m.ipv4.Find(ip)
}
// parseIPv6 finds and returns the information associated with the provided IPv6 address.
func (m *Manager) parseIPv6(ip net.IP) (*model.IPInfo, error) {
// lazyLoad initializes the IP readers if they haven't been initialized yet.
if m.ipv6 == nil {
var err error
if m.ipv6, err = m.createReader(m.Conf.IPv6Format, m.Conf.IPv6File, false); err != nil {
log.Debug("createReader error: ", err)
return nil, err
}
}
return m.ipv6.Find(ip)
}
// parseDomain fetches the information for the given domain. Implementation is pending.
func (m *Manager) parseDomain(content string) (*model.DomainInfo, error) {
if ret, ok := domainlist.GetDomainInfo(content); ok {
return ret, nil
}
return &model.DomainInfo{
Domain: content,
}, nil
}
// serialize takes a segment and its associated data, then serializes the data
// based on the Manager configuration and returns the serialized string.
func (m *Manager) serialize(data []interface{}) (string, error) {
switch m.Conf.OutputType {
case OutputTypeJSON:
list := &model.DataList{}
for _, info := range data {
switch v := info.(type) {
case *model.IPInfo:
list.AddItem(v.Output(m.Conf.UseDBFields))
case *model.DomainInfo:
list.AddDomain(v)
case string:
continue
}
}
return m.serializeDataToJSON(list)
case OutputTypeAlfred:
list := &model.DataList{}
for _, info := range data {
switch v := info.(type) {
case *model.IPInfo:
list.AddAlfredItemByIPInfo(v)
case *model.DomainInfo:
list.AddAlfredItemByDomainInfo(v)
case string:
continue
}
}
list.AddAlfredItemEmpty()
return m.serializeDataToJSON(list)
default:
// default is OutputTypeText
buf := &bytes.Buffer{}
for _, info := range data {
switch v := info.(type) {
case *model.IPInfo:
ret, err := m.serializeIPInfoToText(v)
if err != nil {
return "", err
}
buf.WriteString(ret)
case *model.DomainInfo:
ret, err := m.serializeDomainInfoToText(v)
if err != nil {
return "", err
}
buf.WriteString(ret)
case string:
buf.WriteString(v)
}
}
return buf.String(), nil
}
}
// serializeIPInfoToText takes an IPInfo, then serializes
// the IPInfo to a text format based on the Manager configuration.
func (m *Manager) serializeIPInfoToText(ipInfo *model.IPInfo) (string, error) {
values := strings.Join(util.DeleteEmptyValue(ipInfo.Values()), m.Conf.TextValuesSep)
if values != "" {
ret := strings.Replace(m.Conf.TextFormat, "%origin", ipInfo.IP.String(), 1)
ret = strings.Replace(ret, "%values", values, 1)
return ret, nil
}
return ipInfo.IP.String(), nil
}
// serializeDomainInfoToText takes a DomainInfo, then serializes
// the DomainInfo to a text format based on the Manager configuration.
func (m *Manager) serializeDomainInfoToText(domainInfo *model.DomainInfo) (string, error) {
values := strings.Join(util.DeleteEmptyValue(domainInfo.Values()), m.Conf.TextValuesSep)
if values != "" {
ret := strings.Replace(m.Conf.TextFormat, "%origin", domainInfo.Domain, 1)
ret = strings.Replace(ret, "%values", values, 1)
return ret, nil
}
return domainInfo.Domain, nil
}
// serializeDataToJSON serializes the provided DataList to a JSON format
// based on the Manager configuration. It returns the JSON string.
func (m *Manager) serializeDataToJSON(values *model.DataList) (string, error) {
if len(values.Items) == 0 && len(values.Domains) == 0 {
return "", nil
}
var ret []byte
var err error
if m.Conf.JsonIndent {
ret, err = json.MarshalIndent(values, "", " ")
} else {
ret, err = json.Marshal(values)
}
if err != nil {
log.Debug("json.Marshal error: ", err)
return "", err
}
return string(ret) + "\n", nil
}
// createReader decides whether to create a standard or hybrid reader based on the number of files provided.
// It creates a standard reader for a single file and a hybrid reader for multiple files.
func (m *Manager) createReader(_format, file []string, isPackMode bool) (format.Reader, error) {
if len(file) == 1 {
return m.createStandardReader(_format[0], file[0], isPackMode)
}
return m.createHybridReader(_format, file, isPackMode)
}
// createHybridReader constructs a hybrid reader using multiple IP database formats and files.
// It handles reader creation for each database file and aggregates them into a single hybrid reader.
func (m *Manager) createHybridReader(_format, file []string, isPackMode bool) (format.Reader, error) {
readers := make([]format.Reader, 0, len(file))
for i := range file {
reader, err := m.createStandardReader(_format[i], file[i], isPackMode)
if err != nil {
log.Debug("createStandardReader error: ", err)
return nil, err
}
readers = append(readers, reader)
}
reader, err := ipio.NewHybridReader(nil, readers...)
if err != nil {
log.Debug("ipio.NewHybridReader error: ", err)
return nil, err
}
if len(m.Conf.HybridMode) != 0 {
if err := reader.SetOption(ipio.HybridReaderOption{
Mode: m.Conf.HybridMode,
}); err != nil {
log.Debug("reader.SetOption error: ", err)
return nil, err
}
}
if m.Conf.HybridMode != ipio.HybridComparisonMode {
fs, err := m.newFieldSelector(reader.Meta(), isPackMode)
if err != nil {
return nil, err
}
reader.OperateChain.Use(fs.Do)
}
rw, err := m.newDataRewriter(isPackMode)
if err != nil {
return nil, err
}
reader.OperateChain.Use(rw.Do)
if len(m.Conf.Lang) != 0 {
tl, err := operate.NewTranslator(m.Conf.Lang)
if err != nil {
log.Debug("operate.NewTranslator error: ", err)
return nil, err
}
reader.OperateChain.Use(tl.Do)
}
return reader, nil
}
// createStandardReader sets up and returns an IP reader based on the specified format and file.
// It includes additional processing for field selection and data rewriting based on the configuration.
func (m *Manager) createStandardReader(_format, file string, isPackMode bool) (format.Reader, error) {
dbr, err := m.createDatabaseReader(_format, file)
if err != nil {
return nil, err
}
reader := ipio.NewStandardReader(dbr, nil)
fs, err := m.newFieldSelector(reader.Meta(), isPackMode)
if err != nil {
return nil, err
}
reader.OperateChain.Use(fs.Do)
rw, err := m.newDataRewriter(isPackMode)
if err != nil {
return nil, err
}
// special database process
if !isPackMode {
switch dbr.Meta().Format {
case qqwry.DBFormat:
rw.LoadString(data.QQwryCountry, data.QQwryArea)
}
}
reader.OperateChain.Use(rw.Do)
if len(m.Conf.Lang) != 0 {
tl, err := operate.NewTranslator(m.Conf.Lang)
if err != nil {
log.Debug("operate.NewTranslator error: ", err)
return nil, err
}
reader.OperateChain.Use(tl.Do)
}
return reader, nil
}
// createDatabaseReader initializes a database reader for the given format and file.
// It checks for file existence and downloads the database file if necessary.
func (m *Manager) createDatabaseReader(_format, file string) (format.Reader, error) {
if !util.IsFileExist(file) {
fullpath := filepath.Join(m.Conf.IPSDir, file)
if !util.IsFileExist(fullpath) {
// init database file
_, ok := DownloadMap[file]
if !ok {
log.Debugf("file not found %s", file)
return nil, errors.ErrFileNotFound
}
if err := m.Download(file, ""); err != nil {
return nil, err
}
}
file = fullpath
}
dbr, err := format.NewReader(_format, file)
if err != nil {
log.Debug("format.NewReader error: ", _format, file, err)
return nil, err
}
switch dbr.(type) {
case *mmdb.Reader:
readerOptionArg, err := url.ParseQuery(m.Conf.ReaderOption)
if err != nil {
log.Debug("url.ParseQuery error: ", err)
return nil, err
}
option := mmdb.ReaderOption{
DisableExtraData: readerOptionArg.Get("disable_extra_data") == "true",
UseFullField: readerOptionArg.Get("use_full_field") == "true",
}
if err := dbr.SetOption(option); err != nil {
log.Debug("reader.SetOption error: ", err)
return nil, err
}
}
return dbr, nil
}
// newFieldSelector initializes a FieldSelector based on the provided metadata and the pack mode configuration.
// It selects different sets of fields based on whether the pack mode is enabled or not.
func (m *Manager) newFieldSelector(meta *model.Meta, isPackMode bool) (*operate.FieldSelector, error) {
fields := m.Conf.Fields
if isPackMode {
fields = m.Conf.DPFields
}
fs, err := operate.NewFieldSelector(meta, fields)
if err != nil {
log.Debug("operate.NewFieldSelector error: ", err)
return nil, err
}
return fs, nil
}
// newDataRewriter creates a DataRewriter based on the pack mode configuration.
// It loads different rewrite rules based on whether the pack mode is enabled or not.
func (m *Manager) newDataRewriter(isPackMode bool) (*operate.DataRewriter, error) {
rw := operate.NewDataRewriter()
rewriteFiles := m.Conf.RewriteFiles
if isPackMode {
rewriteFiles = m.Conf.DPRewriterFiles
}
if len(rewriteFiles) > 0 {
if err := rw.LoadFiles(strings.Split(rewriteFiles, ",")); err != nil {
log.Debug("rw.LoadFiles error: ", err)
return nil, err
}
}
// common process
rw.LoadString(data.ASN2ISP, data.Province, data.City, data.ISP)
return rw, nil
}