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fix: prevent path traversal in article download endpoints #397

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fix: prevent path traversal in article download endpoints #397

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15 changes: 13 additions & 2 deletions addition/article/api.go
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,7 @@ import (
"chat/utils"
"fmt"
"github.com/gin-gonic/gin"
"path/filepath"
"strings"
)

Expand All @@ -24,14 +25,24 @@ type WebsocketArticleResponse struct {

func ProjectTarDownloadAPI(c *gin.Context) {
hash := strings.TrimSpace(c.Query("hash"))
// Prevent path traversal by validating hash contains only safe characters
if hash == "" || strings.ContainsAny(hash, "/\..") {
c.JSON(400, gin.H{"error": "invalid hash"})
return
}
c.Writer.Header().Add("Content-Disposition", "attachment; filename=article.tar.gz")
c.File(fmt.Sprintf("storage/article/%s.tar.gz", hash))
c.File(filepath.Join("storage", "article", hash+".tar.gz"))
}

func ProjectZipDownloadAPI(c *gin.Context) {
hash := strings.TrimSpace(c.Query("hash"))
// Prevent path traversal by validating hash contains only safe characters
if hash == "" || strings.ContainsAny(hash, "/\..") {
c.JSON(400, gin.H{"error": "invalid hash"})
return
}
c.Writer.Header().Add("Content-Disposition", "attachment; filename=article.zip")
c.File(fmt.Sprintf("storage/article/%s.zip", hash))
c.File(filepath.Join("storage", "article", hash+".zip"))
}

func GenerateAPI(c *gin.Context) {
Expand Down