This commit is contained in:
2023-02-20 20:25:38 +01:00
parent bed65c76cb
commit 3024c907eb
3 changed files with 170 additions and 125 deletions

View File

@@ -48,6 +48,10 @@ func Runclient(cfg *cfg.Config, args []string) error {
postfiles[filepath.Base(file)] = file postfiles[filepath.Base(file)] = file
} }
// FIXME: doesn't set name=upload[]
// see https://github.com/go-resty/resty/issues/617
// however, this works:
// curl -X POST localhost:8080/api/putfile -F "upload[]=@xxx" -F "upload[]=@yyy" -H "Content-Type: multipart/form-data"
resp, err := client.R(). resp, err := client.R().
SetFiles(postfiles). SetFiles(postfiles).
SetFormData(map[string]string{"expire": "1d"}). SetFormData(map[string]string{"expire": "1d"}).

142
upd/lib/handlers.go Normal file
View File

@@ -0,0 +1,142 @@
/*
Copyright © 2023 Thomas von Dein
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package lib
import (
//"archive/zip"
"fmt"
"github.com/gin-gonic/gin"
//"github.com/gin-gonic/gin/binding"
"encoding/json"
"github.com/google/uuid"
"github.com/tlinden/up/upd/cfg"
bolt "go.etcd.io/bbolt"
//"io"
// "net/http"
"os"
"path/filepath"
//"regexp"
"strings"
"time"
)
func Putfile(c *gin.Context, cfg *cfg.Config, db *bolt.DB) (string, error) {
// supports upload of multiple files with:
//
// curl -X POST localhost:8080/putfile \
// -F "upload[]=@/home/scip/2023-02-06_10-51.png" \
// -F "upload[]=@/home/scip/pgstat.png" \
// -H "Content-Type: multipart/form-data"
//
// If multiple files are uploaded, they are zipped, otherwise
// the file is being stored as is.
//
// Returns the name of the uploaded file.
//
// FIXME: normalize or rename filename of single file to avoid dumb file names
id := uuid.NewString()
var returnUrl string
var formdata Meta
os.MkdirAll(filepath.Join(cfg.StorageDir, id), os.ModePerm)
// fetch auxiliary form data
form, _ := c.MultipartForm()
if err := c.ShouldBind(&formdata); err != nil {
return "", err
}
// init upload obj
entry := &Upload{Id: id, Uploaded: time.Now(), Expire: formdata.Expire}
if len(entry.Expire) == 0 {
entry.Expire = "asap"
}
// retrieve files, if any
files := form.File["upload[]"]
for _, file := range files {
filename := NormalizeFilename(filepath.Base(file.Filename))
path := filepath.Join(cfg.StorageDir, id, filename)
entry.Members = append(entry.Members, filename)
Log("Received: %s => %s/%s", file.Filename, id, filename)
if err := c.SaveUploadedFile(file, path); err != nil {
cleanup(filepath.Join(cfg.StorageDir, id))
return "", err
}
}
if len(entry.Members) == 1 {
returnUrl = cfg.Url + cfg.ApiPrefix + "/getfile/" + id + "/" + entry.Members[0]
entry.File = entry.Members[0]
} else {
zipfile := Ts() + "data.zip"
if err := zipSource(filepath.Join(cfg.StorageDir, id), filepath.Join(cfg.StorageDir, id, zipfile)); err != nil {
cleanup(filepath.Join(cfg.StorageDir, id))
return "", err
}
returnUrl = strings.Join([]string{cfg.Url + cfg.ApiPrefix, "getfile", id, zipfile}, "/")
entry.File = zipfile
// clean up after us
go func() {
for _, file := range entry.Members {
if err := os.Remove(filepath.Join(cfg.StorageDir, id, file)); err != nil {
Log("ERROR: unable to delete %s: %s", file, err)
}
}
}()
}
Log("Now serving %s from %s/%s", returnUrl, cfg.StorageDir, id)
Log("Expire set to: %s", entry.Expire)
go func() {
// => db.go !
err := db.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucketIfNotExists([]byte("uploads"))
if err != nil {
return fmt.Errorf("create bucket: %s", err)
}
jsonentry, err := json.Marshal(entry)
if err != nil {
return fmt.Errorf("json marshalling failure: %s", err)
}
err = b.Put([]byte(id), []byte(jsonentry))
if err != nil {
return fmt.Errorf("insert data: %s", err)
}
// results in:
// bbolt get /tmp/uploads.db uploads fb242922-86cb-43a8-92bc-b027c35f0586
// {"id":"fb242922-86cb-43a8-92bc-b027c35f0586","expire":"1d","file":"2023-02-17-13-09-data.zip"}
return nil
})
if err != nil {
Log("DB error: %s", err.Error())
}
}()
return returnUrl, nil
}

View File

@@ -22,8 +22,8 @@ import (
"fmt" "fmt"
"github.com/gin-gonic/gin" "github.com/gin-gonic/gin"
//"github.com/gin-gonic/gin/binding" //"github.com/gin-gonic/gin/binding"
"encoding/json" //"encoding/json"
"github.com/google/uuid" //"github.com/google/uuid"
"github.com/tlinden/up/upd/cfg" "github.com/tlinden/up/upd/cfg"
bolt "go.etcd.io/bbolt" bolt "go.etcd.io/bbolt"
"io" "io"
@@ -31,7 +31,7 @@ import (
"os" "os"
"path/filepath" "path/filepath"
"regexp" "regexp"
"strings" //"strings"
"time" "time"
) )
@@ -41,6 +41,20 @@ type Result struct {
error string error string
} }
// Binding from JSON, data coming from user, not tainted
type Meta struct {
Expire string `form:"expire"`
}
// stores 1 upload object, gets into db
type Upload struct {
Id string `json:"id"`
Expire string `json:"expire"`
File string `json:"file"` // final filename (visible to the downloader)
Members []string `json:"members"` // contains multiple files, so File is an archive
Uploaded time.Time `json:"uploaded"`
}
func Log(format string, values ...any) { func Log(format string, values ...any) {
fmt.Fprintf(gin.DefaultWriter, "[GIN] "+format+"\n", values...) fmt.Fprintf(gin.DefaultWriter, "[GIN] "+format+"\n", values...)
} }
@@ -56,17 +70,6 @@ func NormalizeFilename(file string) string {
return Ts() + r.ReplaceAllString(file, "") return Ts() + r.ReplaceAllString(file, "")
} }
// Binding from JSON, data coming from user, not tainted
type Meta struct {
Expire string `form:"expire"`
}
type DbEntry struct {
Id string `json:"id"`
Expire string `json:"expire"`
File string `json:"file"`
}
func Runserver(cfg *cfg.Config, args []string) error { func Runserver(cfg *cfg.Config, args []string) error {
dst := cfg.StorageDir dst := cfg.StorageDir
router := gin.Default() router := gin.Default()
@@ -79,123 +82,19 @@ func Runserver(cfg *cfg.Config, args []string) error {
} }
defer db.Close() defer db.Close()
// FIXME: put these beast into their own funcs!!!!!!!
{ {
api.POST("/putfile", func(c *gin.Context) { api.POST("/putfile", func(c *gin.Context) {
// supports upload of multiple files with: uri, err := Putfile(c, cfg, db)
//
// curl -X POST localhost:8080/putfile \
// -F "upload[]=@/home/scip/2023-02-06_10-51.png" \
// -F "upload[]=@/home/scip/pgstat.png" \
// -H "Content-Type: multipart/form-data"
//
// If multiple files are uploaded, they are zipped, otherwise
// the file is being stored as is.
//
// Returns the name of the uploaded file.
//
// FIXME: normalize or rename filename of single file to avoid dumb file names
id := uuid.NewString()
os.MkdirAll(filepath.Join(dst, id), os.ModePerm) if err != nil {
var formdata Meta
if err := c.ShouldBind(&formdata); err != nil {
c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()}) c.JSON(http.StatusBadRequest, gin.H{"error": err.Error()})
return
}
form, _ := c.MultipartForm()
files := form.File["upload[]"]
uploaded := []string{}
for _, file := range files {
filename := NormalizeFilename(filepath.Base(file.Filename))
path := filepath.Join(dst, id, filename)
uploaded = append(uploaded, filename)
Log("Received: %s => %s/%s", file.Filename, id, filename)
if err := c.SaveUploadedFile(file, path); err != nil {
c.JSON(http.StatusBadRequest, gin.H{
"code": http.StatusOK,
"message": "upload file err: " + err.Error(),
"success": false,
})
cleanup(filepath.Join(dst, id))
return
}
}
var returnUrl string
entry := &DbEntry{Id: id, Expire: formdata.Expire}
if len(uploaded) == 1 {
returnUrl = cfg.Url + cfg.ApiPrefix + "/getfile/" + id + "/" + uploaded[0]
entry.File = uploaded[0]
} else { } else {
zipfile := Ts() + "data.zip"
if err := zipSource(filepath.Join(dst, id), filepath.Join(dst, id, zipfile)); err != nil {
c.JSON(http.StatusBadRequest, gin.H{
"code": http.StatusBadRequest,
"message": "upload file err: " + err.Error(),
"success": false,
})
cleanup(filepath.Join(dst, id))
}
returnUrl = strings.Join([]string{cfg.Url + cfg.ApiPrefix, "getfile", id, zipfile}, "/")
entry.File = zipfile
// clean up after us
go func() {
for _, file := range uploaded {
if err := os.Remove(filepath.Join(dst, id, file)); err != nil {
Log("ERROR: unable to delete %s: %s", file, err)
}
}
}()
}
c.JSON(http.StatusOK, gin.H{ c.JSON(http.StatusOK, gin.H{
"code": http.StatusOK, "code": http.StatusOK,
"message": returnUrl, "message": uri,
"success": true, "success": true,
}) })
Log("Now serving %s from %s/%s", returnUrl, dst, id)
Log("Expire set to: %s", formdata.Expire)
go func() {
err := db.Update(func(tx *bolt.Tx) error {
b, err := tx.CreateBucketIfNotExists([]byte("uploads"))
if err != nil {
return fmt.Errorf("create bucket: %s", err)
} }
jsonentry, err := json.Marshal(entry)
if err != nil {
return fmt.Errorf("json marshalling failure: %s", err)
}
err = b.Put([]byte(id), []byte(jsonentry))
if err != nil {
return fmt.Errorf("insert data: %s", err)
}
// results in:
// bbolt get /tmp/uploads.db uploads fb242922-86cb-43a8-92bc-b027c35f0586
// {"id":"fb242922-86cb-43a8-92bc-b027c35f0586","expire":"1d","file":"2023-02-17-13-09-data.zip"}
return nil
})
if err != nil {
Log("DB error: %s", err.Error())
}
}()
}) })
api.GET("/getfile/:id/:file", func(c *gin.Context) { api.GET("/getfile/:id/:file", func(c *gin.Context) {