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| testdata/GeoIP2-City.mmdb | ||
| testdata/GeoIP2-Connection-Type.mmdb | ||
| testdata/GeoIP2-Country.mmdb | ||
| testdata/GeoIP2-ISP.mmdb |
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| The MIT License (MIT) | ||
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| Copyright (c) 2017 Aleksey Lin <[email protected]> (https://incsw.in) | ||
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| Permission is hereby granted, free of charge, to any person obtaining a copy | ||
| of this software and associated documentation files (the "Software"), to deal | ||
| in the Software without restriction, including without limitation the rights | ||
| to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | ||
| copies of the Software, and to permit persons to whom the Software is | ||
| furnished to do so, subject to the following conditions: | ||
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| The above copyright notice and this permission notice shall be included in all | ||
| copies or substantial portions of the Software. | ||
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| THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | ||
| IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | ||
| FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE | ||
| AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | ||
| LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | ||
| OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | ||
| SOFTWARE. |
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| [](LICENSE) | ||
| [](https://goreportcard.com/report/github.com/IncSW/geoip2) | ||
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| # GeoIP2 Reader for Go | ||
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| This library reads MaxMind GeoIP2 databases. | ||
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| ## Installation | ||
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| `go get github.com/IncSW/geoip2` | ||
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| ## Quick Start | ||
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| ```go | ||
| import "github.com/IncSW/geoip2" | ||
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| reader, err := geoip2.NewReaderFromFile("path/to/GeoIP2-City.mmdb") | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| record, err := reader.LookupCity(net.ParseIP("1.1.1.1")) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| data, err := json.Marshal(record) | ||
| if err != nil { | ||
| panic(err) | ||
| } | ||
| println(string(data)) | ||
| // { | ||
| // "Continent": { | ||
| // "GeoNameID": 6255151, | ||
| // "Code": "OC", | ||
| // "Names": { | ||
| // "de": "Ozeanien", | ||
| // "en": "Oceania", | ||
| // "es": "Oceanía", | ||
| // "fr": "Océanie", | ||
| // "ja": "オセアニア", | ||
| // "pt-BR": "Oceania", | ||
| // "ru": "Океания", | ||
| // "zh-CN": "大洋洲" | ||
| // } | ||
| // }, | ||
| // "City": { | ||
| // "GeoNameID": 0, | ||
| // "Names": null | ||
| // }, | ||
| // "Country": { | ||
| // "GeoNameID": 2077456, | ||
| // "ISOCode": "AU", | ||
| // "IsInEuropeanEnion": false, | ||
| // "Names": { | ||
| // "de": "Australien", | ||
| // "en": "Australia", | ||
| // "es": "Australia", | ||
| // "fr": "Australie", | ||
| // "ja": "オーストラリア", | ||
| // "pt-BR": "Austrália", | ||
| // "ru": "Австралия", | ||
| // "zh-CN": "澳大利亚" | ||
| // }, | ||
| // "Type": "" | ||
| // }, | ||
| // "Subdivisions": null, | ||
| // "Location": { | ||
| // "AccuracyRadius": 1000, | ||
| // "MetroCode": 0, | ||
| // "Latitude": -33.494, | ||
| // "Longitude": 143.2104, | ||
| // "TimeZone": "Australia/Sydney" | ||
| // }, | ||
| // "Postal": { | ||
| // "Code": "" | ||
| // }, | ||
| // "RegisteredCountry": { | ||
| // "GeoNameID": 2077456, | ||
| // "ISOCode": "AU", | ||
| // "IsInEuropeanEnion": false, | ||
| // "Names": { | ||
| // "de": "Australien", | ||
| // "en": "Australia", | ||
| // "es": "Australia", | ||
| // "fr": "Australie", | ||
| // "ja": "オーストラリア", | ||
| // "pt-BR": "Austrália", | ||
| // "ru": "Австралия", | ||
| // "zh-CN": "澳大利亚" | ||
| // }, | ||
| // "Type": "" | ||
| // }, | ||
| // "RepresentedCountry": { | ||
| // "GeoNameID": 0, | ||
| // "ISOCode": "", | ||
| // "IsInEuropeanEnion": false, | ||
| // "Names": null, | ||
| // "Type": "" | ||
| // }, | ||
| // "Traits": { | ||
| // "IsAnonymousProxy": false, | ||
| // "IsSatelliteProvider": false, | ||
| // "StaticIPScore": 0 | ||
| // } | ||
| // } | ||
| ``` | ||
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| ## Performance | ||
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| TODO | ||
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| ## License | ||
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| [MIT License](LICENSE). |
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| package geoip2 | ||
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| import ( | ||
| "errors" | ||
| "strconv" | ||
| ) | ||
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| func readCityResponse(buffer []byte, offset uint) (*CityResponse, error) { | ||
| dataType, citySize, offset, err := readControl(buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| if dataType != dataTypeMap { | ||
| return nil, errors.New("invalid city type: " + strconv.Itoa(int(dataType))) | ||
| } | ||
| var key []byte | ||
| response := &CityResponse{} | ||
| for i := uint(0); i < citySize; i++ { | ||
| key, offset, err = readMapKey(buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| switch b2s(key) { | ||
| case "city": | ||
| offset, err = readCity(&response.City, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "continent": | ||
| offset, err = readContinent(&response.Continent, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "country": | ||
| offset, err = readCountry(&response.Country, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "location": | ||
| offset, err = readLocation(&response.Location, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "postal": | ||
| offset, err = readPostal(&response.Postal, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "registered_country": | ||
| offset, err = readCountry(&response.RegisteredCountry, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "represented_country": | ||
| offset, err = readCountry(&response.RepresentedCountry, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "subdivisions": | ||
| response.Subdivisions, offset, err = readSubdivisions(buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| case "traits": | ||
| offset, err = readTraits(&response.Traits, buffer, offset) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| default: | ||
| return nil, errors.New("unknown city response key: " + string(key) + ", type: " + strconv.Itoa(int(dataType))) | ||
| } | ||
| } | ||
| return response, nil | ||
| } | ||
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| func readCity(city *City, buffer []byte, offset uint) (uint, error) { | ||
| dataType, size, offset, err := readControl(buffer, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| switch dataType { | ||
| case dataTypeMap: | ||
| return readCityMap(city, buffer, size, offset) | ||
| case dataTypePointer: | ||
| pointer, newOffset, err := readPointer(buffer, size, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| dataType, size, offset, err := readControl(buffer, pointer) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| if dataType != dataTypeMap { | ||
| return 0, errors.New("invalid city pointer type: " + strconv.Itoa(int(dataType))) | ||
| } | ||
| _, err = readCityMap(city, buffer, size, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| return newOffset, nil | ||
| default: | ||
| return 0, errors.New("invalid city type: " + strconv.Itoa(int(dataType))) | ||
| } | ||
| } | ||
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| func readCityMap(city *City, buffer []byte, mapSize uint, offset uint) (uint, error) { | ||
| var key []byte | ||
| var err error | ||
| for i := uint(0); i < mapSize; i++ { | ||
| key, offset, err = readMapKey(buffer, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| switch b2s(key) { | ||
| case "geoname_id": | ||
| city.GeoNameID, offset, err = readUInt32(buffer, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| case "names": | ||
| city.Names, offset, err = readStringMap(buffer, offset) | ||
| if err != nil { | ||
| return 0, err | ||
| } | ||
| default: | ||
| return 0, errors.New("unknown city key: " + string(key)) | ||
| } | ||
| } | ||
| return offset, nil | ||
| } |
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