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package sub
import (
"encoding/base64"
"fmt"
"strings"
"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
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,
) *SUBController {
sub := NewSubService(showInfo, rModel)
a := &SUBController{
subTitle: subTitle,
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)
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)
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) {
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)))
}
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