A simple, federated blogging platform. Written in Go. Fork by @gytisrepecka to provide suggestions and fixes to upstream @writeas.
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package writefreely
import (
"encoding/json"
"fmt"
"html/template"
"io"
"io/ioutil"
"net/http"
"os"
"path/filepath"
"strings"
"time"
"github.com/hashicorp/go-multierror"
"github.com/writeas/impart"
wfimport "github.com/writeas/import"
"github.com/writeas/web-core/log"
)
func viewImport(app *App, u *User, w http.ResponseWriter, r *http.Request) error {
// Fetch extra user data
p := NewUserPage(app, r, u, "Import Posts", nil)
c, err := app.db.GetCollections(u, app.Config().App.Host)
if err != nil {
return impart.HTTPError{http.StatusInternalServerError, fmt.Sprintf("unable to fetch collections: %v", err)}
}
d := struct {
*UserPage
Collections *[]Collection
Flashes []template.HTML
Message string
InfoMsg bool
}{
UserPage: p,
Collections: c,
Flashes: []template.HTML{},
}
flashes, _ := getSessionFlashes(app, w, r, nil)
for _, flash := range flashes {
if strings.HasPrefix(flash, "SUCCESS: ") {
d.Message = strings.TrimPrefix(flash, "SUCCESS: ")
} else if strings.HasPrefix(flash, "INFO: ") {
d.Message = strings.TrimPrefix(flash, "INFO: ")
d.InfoMsg = true
} else {
d.Flashes = append(d.Flashes, template.HTML(flash))
}
}
showUserPage(w, "import", d)
return nil
}
func handleImport(app *App, u *User, w http.ResponseWriter, r *http.Request) error {
// limit 10MB per submission
r.ParseMultipartForm(10 << 20)
collAlias := r.PostFormValue("collection")
coll := &Collection{
ID: 0,
}
var err error
if collAlias != "" {
coll, err = app.db.GetCollection(collAlias)
if err != nil {
log.Error("Unable to get collection for import: %s", err)
return err
}
// Only allow uploading to collection if current user is owner
if coll.OwnerID != u.ID {
err := ErrUnauthorizedGeneral
_ = addSessionFlash(app, w, r, err.Message, nil)
return err
}
coll.hostName = app.cfg.App.Host
}
fileDates := make(map[string]int64)
err = json.Unmarshal([]byte(r.FormValue("fileDates")), &fileDates)
if err != nil {
log.Error("invalid form data for file dates: %v", err)
return impart.HTTPError{http.StatusBadRequest, "form data for file dates was invalid"}
}
files := r.MultipartForm.File["files"]
var fileErrs []error
filesSubmitted := len(files)
var filesImported int
for _, formFile := range files {
fname := ""
ok := func() bool {
file, err := formFile.Open()
if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("Unable to read file %s", formFile.Filename))
log.Error("import file: open from form: %v", err)
return false
}
defer file.Close()
tempFile, err := ioutil.TempFile("", "post-upload-*.txt")
if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("Internal error for %s", formFile.Filename))
log.Error("import file: create temp file %s: %v", formFile.Filename, err)
return false
}
defer tempFile.Close()
_, err = io.Copy(tempFile, file)
if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("Internal error for %s", formFile.Filename))
log.Error("import file: copy to temp location %s: %v", formFile.Filename, err)
return false
}
info, err := tempFile.Stat()
if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("Internal error for %s", formFile.Filename))
log.Error("import file: stat temp file %s: %v", formFile.Filename, err)
return false
}
fname = info.Name()
return true
}()
if !ok {
continue
}
post, err := wfimport.FromFile(filepath.Join(os.TempDir(), fname))
if err == wfimport.ErrEmptyFile {
// not a real error so don't log
_ = addSessionFlash(app, w, r, fmt.Sprintf("%s was empty, import skipped", formFile.Filename), nil)
continue
} else if err == wfimport.ErrInvalidContentType {
// same as above
_ = addSessionFlash(app, w, r, fmt.Sprintf("%s is not a supported post file", formFile.Filename), nil)
continue
} else if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("failed to read copy of %s", formFile.Filename))
log.Error("import textfile: file to post: %v", err)
continue
}
if collAlias != "" {
post.Collection = collAlias
}
dateTime := time.Unix(fileDates[formFile.Filename], 0)
post.Created = &dateTime
created := post.Created.Format("2006-01-02T15:04:05Z")
submittedPost := SubmittedPost{
Title: &post.Title,
Content: &post.Content,
Font: "norm",
Created: &created,
}
rp, err := app.db.CreatePost(u.ID, coll.ID, &submittedPost)
if err != nil {
fileErrs = append(fileErrs, fmt.Errorf("failed to create post from %s", formFile.Filename))
log.Error("import textfile: create db post: %v", err)
continue
}
// Federate post, if necessary
if app.cfg.App.Federation && coll.ID > 0 {
go federatePost(
app,
&PublicPost{
Post: rp,
Collection: &CollectionObj{
Collection: *coll,
},
},
coll.ID,
false,
)
}
filesImported++
}
if len(fileErrs) != 0 {
_ = addSessionFlash(app, w, r, multierror.ListFormatFunc(fileErrs), nil)
}
if filesImported == filesSubmitted {
verb := "posts"
if filesSubmitted == 1 {
verb = "post"
}
_ = addSessionFlash(app, w, r, fmt.Sprintf("SUCCESS: Import complete, %d %s imported.", filesImported, verb), nil)
} else if filesImported > 0 {
_ = addSessionFlash(app, w, r, fmt.Sprintf("INFO: %d of %d posts imported, see details below.", filesImported, filesSubmitted), nil)
}
return impart.HTTPError{http.StatusFound, "/me/import"}
}