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resources.go
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/
resources.go
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package views
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"fmt"
"io"
"net/http"
"os"
"path"
"time"
"github.com/gin-gonic/gin"
"github.com/Depado/goploader/server/conf"
"github.com/Depado/goploader/server/logger"
"github.com/Depado/goploader/server/models"
"github.com/Depado/goploader/server/utils"
)
// CreateC handles the multipart form upload and creates an encrypted file
func CreateC(c *gin.Context) {
var err error
var duration time.Duration
var once bool
c.Request.Body = http.MaxBytesReader(c.Writer, c.Request.Body, conf.C.SizeLimit*utils.MegaByte)
once = c.PostForm("once") != ""
d := c.DefaultPostForm("duration", "1d")
token := c.PostForm("token")
if conf.C.Token != "" && conf.C.Token != token {
logger.ErrC(c, "server", "Incorrect token")
c.String(http.StatusUnauthorized, "Incorrect token\n")
c.AbortWithStatus(http.StatusUnauthorized)
return
}
if val, ok := models.DurationMap[d]; ok {
duration = val
} else {
logger.ErrC(c, "server", "Invalid duration", d)
c.String(http.StatusBadRequest, "Invalid duration\n")
c.AbortWithStatus(http.StatusBadRequest)
return
}
fd, h, err := c.Request.FormFile("file")
if err != nil {
logger.ErrC(c, "server", "Couldn't read file", err)
c.String(http.StatusRequestEntityTooLarge, "Entity is too large (Max : %v MB)\n", conf.C.SizeLimit)
c.AbortWithStatus(http.StatusRequestEntityTooLarge)
return
}
defer fd.Close()
res := models.NewResourceFromForm(h, once, duration)
k, err := res.WriteEncrypted(fd)
if err != nil {
logger.ErrC(c, "server", "Couldn't write file", err)
c.String(http.StatusInternalServerError, "Something went wrong on the server. Try again later.")
c.AbortWithStatus(http.StatusInternalServerError)
return
}
if conf.C.DiskQuota > 0 {
if models.S.CurrentSize+uint64(res.Size) > uint64(conf.C.DiskQuota*utils.GigaByte) {
logger.ErrC(c, "server", "Quota exceeded")
c.String(http.StatusBadRequest, "Insufficient disk space. Try again later.")
c.AbortWithStatus(http.StatusBadRequest)
os.Remove(path.Join(conf.C.UploadDir, res.Key))
return
}
}
if err = res.Save(); err != nil {
logger.ErrC(c, "server", "Couldn't save in the database", err)
c.String(http.StatusInternalServerError, "Something went wrong on the server. Try again later.")
c.AbortWithStatus(http.StatusInternalServerError)
return
}
res.OnCreated(c)
ns := conf.C.NameServer
if conf.C.AppendPort {
ns = fmt.Sprintf("%s:%d", conf.C.NameServer, conf.C.Port)
}
c.String(http.StatusCreated, "%v://%s/v/%s/%s\n", utils.DetectScheme(c), ns, res.Key, k)
}
// ViewC handles the file views for encrypted files
func ViewC(c *gin.Context) {
var err error
id := c.Param("uniuri")
key := c.Param("key")
re := models.Resource{}
if err = re.Get(id); err != nil || re.Key == "" {
logger.InfoC(c, "server", "Not found", id)
c.AbortWithStatus(http.StatusNotFound)
return
}
re.LogFetched(c)
f, err := os.Open(path.Join(conf.C.UploadDir, re.Key))
if err != nil {
logger.ErrC(c, "server", fmt.Sprintf("Couldn't open %s", re.Key), err)
c.AbortWithStatus(http.StatusInternalServerError)
return
}
block, err := aes.NewCipher([]byte(key))
if err != nil {
logger.ErrC(c, "server", "Couldn't create AES cipher", err)
c.String(http.StatusInternalServerError, "Something went wrong on the server. Try again later.")
c.AbortWithStatus(http.StatusInternalServerError)
return
}
var iv [aes.BlockSize]byte
stream := cipher.NewCFBDecrypter(block, iv[:])
reader := &cipher.StreamReader{S: stream, R: f}
if conf.C.AlwaysDownload {
c.Header("Content-Type", "application/octet-stream")
c.Header("Content-Disposition", "attachment; filename=\""+re.Name+"\"")
} else {
c.Header("Content-Disposition", "filename=\""+re.Name+"\"")
}
io.Copy(c.Writer, reader)
if re.Once {
re.Delete()
re.LogDeleted(c)
}
}
// ViewCCode allows to see the file with syntax highliting and extra options
func ViewCCode(c *gin.Context) {
var err error
id := c.Param("uniuri")
key := c.Param("key")
lang := c.Param("lang")
theme := c.DefaultQuery("theme", "dark")
lines := c.Query("lines") == "true"
re := models.Resource{}
if err = re.Get(id); err != nil || re.Key == "" {
logger.InfoC(c, "server", "Not found", id)
c.AbortWithStatus(http.StatusNotFound)
return
}
re.LogFetched(c)
f, err := os.Open(path.Join(conf.C.UploadDir, re.Key))
if err != nil {
logger.ErrC(c, "server", fmt.Sprintf("Couldn't open %s", re.Key), err)
c.AbortWithStatus(http.StatusInternalServerError)
return
}
block, err := aes.NewCipher([]byte(key))
if err != nil {
logger.ErrC(c, "server", "Couldn't create AES cipher", err)
c.String(http.StatusInternalServerError, "Something went wrong on the server. Try again later.")
c.AbortWithStatus(http.StatusInternalServerError)
return
}
var iv [aes.BlockSize]byte
stream := cipher.NewCFBDecrypter(block, iv[:])
reader := &cipher.StreamReader{S: stream, R: f}
c.Header("Content-Disposition", "filename=\""+re.Name+"\"")
buf := new(bytes.Buffer)
buf.ReadFrom(reader)
bb := buf.Bytes()
c.HTML(http.StatusOK, "code.tmpl", gin.H{
"code": string(bb),
"lang": lang,
"theme": theme,
"lines": lines,
"name": re.Name,
})
if re.Once {
re.Delete()
re.LogDeleted(c)
}
}
// HeadC handles the head request for an encryptd file
func HeadC(c *gin.Context) {
var err error
id := c.Param("uniuri")
key := c.Param("key")
re := models.Resource{}
if err = re.Get(id); err != nil {
logger.InfoC(c, "server", "Not found", id)
c.AbortWithStatus(http.StatusNotFound)
return
}
if re.Key == "" {
logger.InfoC(c, "server", "Not found", id)
c.AbortWithStatus(http.StatusNotFound)
return
}
logger.InfoC(c, "server", "Head", fmt.Sprintf("%s - %s", re.Key, utils.HumanBytes(uint64(re.Size))))
f, err := os.Open(path.Join(conf.C.UploadDir, re.Key))
if err != nil {
logger.ErrC(c, "server", fmt.Sprintf("Couldn't open %s", re.Key), err)
c.AbortWithStatus(http.StatusInternalServerError)
return
}
block, err := aes.NewCipher([]byte(key))
if err != nil {
logger.ErrC(c, "server", "Couldn't create AES cipher", err)
c.String(http.StatusInternalServerError, "Something went wrong on the server. Try again later.")
c.AbortWithStatus(http.StatusInternalServerError)
return
}
var iv [aes.BlockSize]byte
stream := cipher.NewCFBDecrypter(block, iv[:])
reader := &cipher.StreamReader{S: stream, R: f}
if conf.C.AlwaysDownload {
c.Header("Content-Type", "application/octet-stream")
c.Header("Content-Disposition", "attachment; filename=\""+re.Name+"\"")
} else {
c.Header("Content-Disposition", "filename=\""+re.Name+"\"")
}
io.Copy(c.Writer, reader)
}