whatismyip/router/generic.go

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2021-11-10 19:06:12 +00:00
package router
import (
"net"
"net/http"
"path/filepath"
"regexp"
"github.com/dcarrillo/whatismyip/internal/httputils"
"github.com/dcarrillo/whatismyip/internal/setting"
"github.com/dcarrillo/whatismyip/service"
"github.com/gin-gonic/gin"
)
const userAgentPattern = `curl|wget|libwww-perl|python|ansible-httpget|HTTPie|WindowsPowerShell|http_request|Go-http-client|^$`
type JSONResponse struct {
IP string `json:"ip"`
IPVersion byte `json:"ip_version"`
ClientPort string `json:"client_port"`
Country string `json:"country"`
CountryCode string `json:"country_code"`
City string `json:"city"`
Latitude float64 `json:"latitude"`
Longitude float64 `json:"longitude"`
PostalCode string `json:"postal_code"`
TimeZone string `json:"time_zone"`
ASN uint `json:"asn"`
ASNOrganization string `json:"asn_organization"`
Host string `json:"host"`
Headers http.Header `json:"headers"`
}
func getRoot(ctx *gin.Context) {
reg := regexp.MustCompile(userAgentPattern)
if reg.Match([]byte(ctx.Request.UserAgent())) {
ctx.String(http.StatusOK, ctx.ClientIP())
} else {
name := "home"
if setting.App.TemplatePath != "" {
name = filepath.Base(setting.App.TemplatePath)
}
ctx.HTML(http.StatusOK, name, jsonOutput(ctx))
}
}
func getClientPortAsString(ctx *gin.Context) {
_, port, _ := net.SplitHostPort(ctx.Request.RemoteAddr)
ctx.String(http.StatusOK, port+"\n")
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}
func getAllAsString(ctx *gin.Context) {
output := "IP: " + ctx.ClientIP() + "\n"
_, port, _ := net.SplitHostPort(ctx.Request.RemoteAddr)
output += "Client Port: " + port + "\n"
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r := service.Geo{IP: net.ParseIP(ctx.ClientIP())}
if record := r.LookUpCity(); record != nil {
output += geoCityRecordToString(record) + "\n"
}
if record := r.LookUpASN(); record != nil {
output += geoASNRecordToString(record) + "\n"
}
h := ctx.Request.Header
h["Host"] = []string{ctx.Request.Host}
output += httputils.HeadersToSortedString(h)
ctx.String(http.StatusOK, output)
}
func getJSON(ctx *gin.Context) {
ctx.JSON(http.StatusOK, jsonOutput(ctx))
}
func jsonOutput(ctx *gin.Context) JSONResponse {
ip := service.Geo{IP: net.ParseIP(ctx.ClientIP())}
asnRecord := ip.LookUpASN()
cityRecord := ip.LookUpCity()
var version byte = 4
if p := net.ParseIP(ctx.ClientIP()).To4(); p == nil {
version = 6
}
_, port, _ := net.SplitHostPort(ctx.Request.RemoteAddr)
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return JSONResponse{
IP: ctx.ClientIP(),
IPVersion: version,
ClientPort: port,
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Country: cityRecord.Country.Names["en"],
CountryCode: cityRecord.Country.ISOCode,
City: cityRecord.City.Names["en"],
Latitude: cityRecord.Location.Latitude,
Longitude: cityRecord.Location.Longitude,
PostalCode: cityRecord.Postal.Code,
TimeZone: cityRecord.Location.TimeZone,
ASN: asnRecord.AutonomousSystemNumber,
ASNOrganization: asnRecord.AutonomousSystemOrganization,
Host: ctx.Request.Host,
Headers: ctx.Request.Header,
}
}