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package sub
import (
"encoding/base64"
"fmt"
"strings"
"strconv"
"github.com/mhsanaei/3x-ui/v2/config"
"github.com/gin-gonic/gin"
)
// SUBController handles HTTP requests for subscription links and JSON configurations.
type SUBController struct {
subTitle string
subSupportUrl string
subProfileUrl string
subAnnounce string
subEnableRouting bool
subRoutingRules string
subPath string
subJsonPath string
jsonEnabled bool
subEncrypt bool
updateInterval string
subService *SubService
subJsonService *SubJsonService
}
// NewSUBController creates a new subscription controller with the given configuration.
func NewSUBController(
g *gin.RouterGroup,
subPath string,
jsonPath string,
jsonEnabled bool,
encrypt bool,
showInfo bool,
rModel string,
update string,
jsonFragment string,
jsonNoise string,
jsonMux string,
jsonRules string,
subTitle string,
subSupportUrl string,
subProfileUrl string,
subAnnounce string,
subEnableRouting bool,
subRoutingRules string,
) *SUBController {
sub := NewSubService(showInfo, rModel)
a := &SUBController{
subTitle: subTitle,
subSupportUrl: subSupportUrl,
subProfileUrl: subProfileUrl,
subAnnounce: subAnnounce,
subEnableRouting: subEnableRouting,
subRoutingRules: subRoutingRules,
subPath: subPath,
subJsonPath: jsonPath,
jsonEnabled: jsonEnabled,
subEncrypt: encrypt,
updateInterval: update,
subService: sub,
subJsonService: NewSubJsonService(jsonFragment, jsonNoise, jsonMux, jsonRules, sub),
}
a.initRouter(g)
return a
}
// initRouter registers HTTP routes for subscription links and JSON endpoints
// on the provided router group.
func (a *SUBController) initRouter(g *gin.RouterGroup) {
gLink := g.Group(a.subPath)
gLink.GET(":subid", a.subs)
if a.jsonEnabled {
gJson := g.Group(a.subJsonPath)
gJson.GET(":subid", a.subJsons)
}
}
// subs handles HTTP requests for subscription links, returning either HTML page or base64-encoded subscription data.
func (a *SUBController) subs(c *gin.Context) {
subId := c.Param("subid")
scheme, host, hostWithPort, hostHeader := a.subService.ResolveRequest(c)
subs, lastOnline, traffic, err := a.subService.GetSubs(subId, host)
if err != nil || len(subs) == 0 {
c.String(400, "Error!")
} else {
result := ""
for _, sub := range subs {
result += sub + "\n"
}
// If the request expects HTML (e.g., browser) or explicitly asked (?html=1 or ?view=html), render the info page here
accept := c.GetHeader("Accept")
if strings.Contains(strings.ToLower(accept), "text/html") || c.Query("html") == "1" || strings.EqualFold(c.Query("view"), "html") {
// Build page data in service
subURL, subJsonURL := a.subService.BuildURLs(scheme, hostWithPort, a.subPath, a.subJsonPath, subId)
if !a.jsonEnabled {
subJsonURL = ""
}
// Get base_path from context (set by middleware)
basePath, exists := c.Get("base_path")
if !exists {
basePath = "/"
}
// Add subId to base_path for asset URLs
basePathStr := basePath.(string)
if basePathStr == "/" {
basePathStr = "/" + subId + "/"
} else {
// Remove trailing slash if exists, add subId, then add trailing slash
basePathStr = strings.TrimRight(basePathStr, "/") + "/" + subId + "/"
}
page := a.subService.BuildPageData(subId, hostHeader, traffic, lastOnline, subs, subURL, subJsonURL, basePathStr)
c.HTML(200, "subpage.html", gin.H{
"title": "subscription.title",
"cur_ver": config.GetVersion(),
"host": page.Host,
"base_path": page.BasePath,
"sId": page.SId,
"download": page.Download,
"upload": page.Upload,
"total": page.Total,
"used": page.Used,
"remained": page.Remained,
"expire": page.Expire,
"lastOnline": page.LastOnline,
"datepicker": page.Datepicker,
"downloadByte": page.DownloadByte,
"uploadByte": page.UploadByte,
"totalByte": page.TotalByte,
"subUrl": page.SubUrl,
"subJsonUrl": page.SubJsonUrl,
"result": page.Result,
})
return
}
// Add headers
header := fmt.Sprintf("upload=%d; download=%d; total=%d; expire=%d", traffic.Up, traffic.Down, traffic.Total, traffic.ExpiryTime/1000)
a.ApplyCommonHeaders(c, header, a.updateInterval, a.subTitle, a.subSupportUrl, a.subProfileUrl, a.subAnnounce, a.subEnableRouting, a.subRoutingRules)
if a.subEncrypt {
c.String(200, base64.StdEncoding.EncodeToString([]byte(result)))
} else {
c.String(200, result)
}
}
}
// subJsons handles HTTP requests for JSON subscription configurations.
func (a *SUBController) subJsons(c *gin.Context) {
subId := c.Param("subid")
_, host, _, _ := a.subService.ResolveRequest(c)
jsonSub, header, err := a.subJsonService.GetJson(subId, host)
if err != nil || len(jsonSub) == 0 {
c.String(400, "Error!")
} else {
// Add headers
a.ApplyCommonHeaders(c, header, a.updateInterval, a.subTitle, a.subSupportUrl, a.subProfileUrl, a.subAnnounce, a.subEnableRouting, a.subRoutingRules)
c.String(200, jsonSub)
}
}
// ApplyCommonHeaders sets common HTTP headers for subscription responses including user info, update interval, and profile title.
func (a *SUBController) ApplyCommonHeaders(
c *gin.Context,
header,
updateInterval,
profileTitle string,
profileSupportUrl string,
profileUrl string,
profileAnnounce string,
profileEnableRouting bool,
profileRoutingRules string,
) {
c.Writer.Header().Set("Subscription-Userinfo", header)
c.Writer.Header().Set("Profile-Update-Interval", updateInterval)
c.Writer.Header().Set("Profile-Title", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileTitle)))
c.Writer.Header().Set("Support-Url", profileSupportUrl)
c.Writer.Header().Set("Profile-Web-Page-Url", profileUrl)
c.Writer.Header().Set("Announce", "base64:"+base64.StdEncoding.EncodeToString([]byte(profileAnnounce)))
c.Writer.Header().Set("Routing-Enable", strconv.FormatBool(profileEnableRouting))
c.Writer.Header().Set("Routing", profileRoutingRules)
}
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