2020-02-24 18:01:59 +00:00
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package results
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import (
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"encoding/json"
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"image"
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"image/color"
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"image/draw"
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"image/png"
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"io/ioutil"
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"math/rand"
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"net"
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"net/http"
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"regexp"
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"strings"
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"time"
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"backend/config"
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"backend/database"
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"backend/database/schema"
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"github.com/golang/freetype"
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"github.com/golang/freetype/truetype"
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"github.com/oklog/ulid/v2"
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log "github.com/sirupsen/logrus"
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"golang.org/x/image/font"
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)
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const (
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watermark = "LibreSpeed"
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labelMS = " ms"
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labelMbps = "Mbps"
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labelPing = "Ping"
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labelJitter = "Jitter"
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labelDownload = "Download"
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labelUpload = "Upload"
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)
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var (
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ipv4Regex = regexp.MustCompile(`(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.){3}(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)`)
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ipv6Regex = regexp.MustCompile(`(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,7}:|([0-9a-fA-F]{1,4}:){1,6}:[0-9a-fA-F]{1,4}|([0-9a-fA-F]{1,4}:){1,5}(:[0-9a-fA-F]{1,4}){1,2}|([0-9a-fA-F]{1,4}:){1,4}(:[0-9a-fA-F]{1,4}){1,3}|([0-9a-fA-F]{1,4}:){1,3}(:[0-9a-fA-F]{1,4}){1,4}|([0-9a-fA-F]{1,4}:){1,2}(:[0-9a-fA-F]{1,4}){1,5}|[0-9a-fA-F]{1,4}:((:[0-9a-fA-F]{1,4}){1,6})|:((:[0-9a-fA-F]{1,4}){1,7}|:)|fe80:(:[0-9a-fA-F]{0,4}){0,4}%[0-9a-zA-Z]{1,}|::(ffff(:0{1,4})?:)?((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9])|([0-9a-fA-F]{1,4}:){1,4}:((25[0-5]|(2[0-4]|1?[0-9])?[0-9])\.){3}(25[0-5]|(2[0-4]|1?[0-9])?[0-9]))`)
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hostnameRegex = regexp.MustCompile(`"hostname":"([^\\\\"]|\\\\")*"`)
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fontLight, fontBold *truetype.Font
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labelFace, valueFace, smallLabelFace, orgFace, watermarkFace font.Face
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canvasWidth, canvasHeight = 800, 600
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dpi = 150.0
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colorLabel = image.NewUniform(color.RGBA{40, 40, 40, 255})
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colorDownload = image.NewUniform(color.RGBA{96, 96, 170, 255})
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colorUpload = image.NewUniform(color.RGBA{96, 96, 96, 255})
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colorPing = image.NewUniform(color.RGBA{170, 96, 96, 255})
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colorJitter = image.NewUniform(color.RGBA{170, 96, 96, 255})
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colorMeasure = image.NewUniform(color.RGBA{40, 40, 40, 255})
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colorISP = image.NewUniform(color.RGBA{40, 40, 40, 255})
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colorWatermark = image.NewUniform(color.RGBA{160, 160, 160, 255})
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colorSeparator = image.NewUniform(color.RGBA{192, 192, 192, 255})
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)
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type Result struct {
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2020-03-04 16:06:43 +00:00
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ProcessedString string `json:"processedString"`
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RawISPInfo IPInfoResponse `json:"rawIspInfo"`
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2020-02-24 18:01:59 +00:00
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}
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type IPInfoResponse struct {
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IP string `json:"ip"`
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Hostname string `json:"hostname"`
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City string `json:"city"`
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Region string `json:"region"`
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Country string `json:"country"`
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Location string `json:"loc"`
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Organization string `json:"org"`
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Postal string `json:"postal"`
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Timezone string `json:"timezone"`
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Readme string `json:"readme"`
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}
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func init() {
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// changed to use Noto Sans instead of OpenSans, due to issue:
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// https://github.com/golang/freetype/issues/8
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if b, err := ioutil.ReadFile("assets/NotoSansDisplay-Light.ttf"); err != nil {
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log.Fatalf("Error opening NotoSansDisplay-Light font: %s", err)
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} else {
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f, err := freetype.ParseFont(b)
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if err != nil {
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log.Fatalf("Error parsing NotoSansDisplay-Light font: %s", err)
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}
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fontLight = f
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}
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if b, err := ioutil.ReadFile("assets/NotoSansDisplay-Medium.ttf"); err != nil {
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log.Fatalf("Error opening NotoSansDisplay-Medium font: %s", err)
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} else {
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f, err := freetype.ParseFont(b)
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if err != nil {
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log.Fatalf("Error parsing NotoSansDisplay-Medium font: %s", err)
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}
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fontBold = f
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}
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labelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 26,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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valueFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 36,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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smallLabelFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 20,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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orgFace = truetype.NewFace(fontBold, &truetype.Options{
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Size: 16,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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watermarkFace = truetype.NewFace(fontLight, &truetype.Options{
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Size: 14,
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DPI: dpi,
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Hinting: font.HintingFull,
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})
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}
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func Record(w http.ResponseWriter, r *http.Request) {
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ipAddr, _, _ := net.SplitHostPort(r.RemoteAddr)
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userAgent := r.UserAgent()
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language := r.Header.Get("Accept-Language")
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ispInfo := r.FormValue("ispinfo")
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download := r.FormValue("dl")
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upload := r.FormValue("ul")
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ping := r.FormValue("ping")
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jitter := r.FormValue("jitter")
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logs := r.FormValue("log")
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extra := r.FormValue("extra")
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if config.LoadedConfig().RedactIP {
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ipAddr = "0.0.0.0"
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ipv4Regex.ReplaceAllString(ispInfo, "0.0.0.0")
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ipv4Regex.ReplaceAllString(logs, "0.0.0.0")
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ipv6Regex.ReplaceAllString(ispInfo, "0.0.0.0")
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ipv6Regex.ReplaceAllString(logs, "0.0.0.0")
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hostnameRegex.ReplaceAllString(ispInfo, `"hostname":"REDACTED"`)
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hostnameRegex.ReplaceAllString(logs, `"hostname":"REDACTED"`)
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}
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var record schema.TelemetryData
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record.IPAddress = ipAddr
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2020-03-02 17:03:10 +00:00
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if ispInfo == "" {
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record.ISPInfo = "{}"
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} else {
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record.ISPInfo = ispInfo
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}
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2020-02-24 18:01:59 +00:00
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record.Extra = extra
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record.UserAgent = userAgent
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record.Language = language
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record.Download = download
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record.Upload = upload
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record.Ping = ping
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record.Jitter = jitter
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record.Log = logs
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2020-02-26 16:57:00 +00:00
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t := time.Now()
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2020-02-24 18:01:59 +00:00
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entropy := ulid.Monotonic(rand.New(rand.NewSource(t.UnixNano())), 0)
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uuid := ulid.MustNew(ulid.Timestamp(t), entropy)
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record.UUID = uuid.String()
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2020-02-26 09:00:15 +00:00
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err := database.DB.Insert(&record)
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2020-02-24 18:01:59 +00:00
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if err != nil {
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log.Errorf("Error inserting into database: %s", err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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if _, err := w.Write([]byte("id " + uuid.String())); err != nil {
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log.Errorf("Error writing ID to telemetry request: %s", err)
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w.WriteHeader(http.StatusInternalServerError)
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}
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}
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func DrawPNG(w http.ResponseWriter, r *http.Request) {
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uuid := r.FormValue("id")
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record, err := database.DB.FetchByUUID(uuid)
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if err != nil {
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log.Errorf("Error querying database: %s", err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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var result Result
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if err := json.Unmarshal([]byte(record.ISPInfo), &result); err != nil {
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log.Errorf("Error parsing ISP info: %s", err)
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w.WriteHeader(http.StatusInternalServerError)
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return
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}
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canvas := image.NewRGBA(image.Rectangle{
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Min: image.Point{},
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Max: image.Point{
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X: canvasWidth,
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Y: canvasHeight,
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},
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})
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draw.Draw(canvas, canvas.Bounds(), image.NewUniform(color.White), image.Point{}, draw.Src)
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drawer := &font.Drawer{
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Dst: canvas,
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Face: labelFace,
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}
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drawer.Src = colorLabel
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// labels
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p := drawer.MeasureString(labelPing)
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x := canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/10)
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drawer.DrawString(labelPing)
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p = drawer.MeasureString(labelJitter)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/10)
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drawer.DrawString(labelJitter)
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p = drawer.MeasureString(labelDownload)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/2)
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drawer.DrawString(labelDownload)
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p = drawer.MeasureString(labelUpload)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight/2)
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drawer.DrawString(labelUpload)
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drawer.Face = smallLabelFace
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drawer.Src = colorMeasure
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p = drawer.MeasureString(labelMbps)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10)
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drawer.DrawString(labelMbps)
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p = drawer.MeasureString(labelMbps)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*8/10)
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drawer.DrawString(labelMbps)
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msLength := drawer.MeasureString(labelMS)
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// ping value
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drawer.Face = valueFace
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pingValue := strings.Split(record.Ping, ".")[0]
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p = drawer.MeasureString(pingValue)
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x = canvasWidth/4 - (p.Round()+msLength.Round())/2
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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drawer.Src = colorPing
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drawer.DrawString(pingValue)
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x = x + p.Round()
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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drawer.Src = colorMeasure
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drawer.Face = smallLabelFace
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drawer.DrawString(labelMS)
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// jitter value
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drawer.Face = valueFace
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jitterValue := strings.Split(record.Jitter, ".")[0]
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p = drawer.MeasureString(jitterValue)
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x = canvasWidth*3/4 - (p.Round()+msLength.Round())/2
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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drawer.Src = colorJitter
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drawer.DrawString(jitterValue)
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drawer.Face = smallLabelFace
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x = x + p.Round()
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drawer.Dot = freetype.Pt(x, canvasHeight*11/40)
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drawer.Src = colorMeasure
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drawer.DrawString(labelMS)
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// download value
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drawer.Face = valueFace
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p = drawer.MeasureString(record.Download)
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x = canvasWidth/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40)
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drawer.Src = colorDownload
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drawer.DrawString(record.Download)
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// upload value
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p = drawer.MeasureString(record.Upload)
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x = canvasWidth*3/4 - p.Round()/2
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drawer.Dot = freetype.Pt(x, canvasHeight*27/40)
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drawer.Src = colorUpload
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drawer.DrawString(record.Upload)
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// watermark
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ctx := freetype.NewContext()
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ctx.SetFont(fontLight)
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ctx.SetFontSize(14)
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ctx.SetDPI(dpi)
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ctx.SetHinting(font.HintingFull)
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drawer.Face = watermarkFace
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drawer.Src = colorWatermark
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p = drawer.MeasureString(watermark)
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x = canvasWidth - p.Round() - 5
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drawer.Dot = freetype.Pt(x, canvasHeight-10)
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drawer.DrawString(watermark)
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// separator
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for i := canvas.Bounds().Min.X; i < canvas.Bounds().Max.X; i++ {
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canvas.Set(i, canvasHeight-ctx.PointToFixed(14).Round()-10, colorSeparator)
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}
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// ISP info
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drawer.Face = orgFace
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drawer.Src = colorISP
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drawer.Dot = freetype.Pt(6, canvasHeight-ctx.PointToFixed(14).Round()-15)
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removeRegexp := regexp.MustCompile(`AS\d+\s`)
|
2020-03-04 16:06:43 +00:00
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org := removeRegexp.ReplaceAllString(result.RawISPInfo.Organization, "")
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if result.RawISPInfo.Country != "" {
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org += ", " + result.RawISPInfo.Country
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2020-02-24 18:01:59 +00:00
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}
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drawer.DrawString(org)
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w.Header().Set("Content-Disposition", "inline; filename="+uuid+".png")
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w.Header().Set("Content-Type", "image/png")
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if err := png.Encode(w, canvas); err != nil {
|
|
|
|
log.Errorf("Failed to output image to HTTP client: %s", err)
|
|
|
|
}
|
|
|
|
}
|