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// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package api
import (
"archive/zip"
"encoding/json"
"github.com/mattermost/platform/model"
"github.com/mattermost/platform/utils"
"io"
"os"
)
const (
EXPORT_PATH = "export/"
EXPORT_FILENAME = "MattermostExport.zip"
EXPORT_OPTIONS_FILE = "options.json"
EXPORT_TEAMS_FOLDER = "teams"
EXPORT_CHANNELS_FOLDER = "channels"
EXPORT_CHANNEL_MEMBERS_FOLDER = "members"
EXPORT_POSTS_FOLDER = "posts"
EXPORT_USERS_FOLDER = "users"
EXPORT_LOCAL_STORAGE_FOLDER = "files"
)
type ExportWriter interface {
Create(name string) (io.Writer, error)
}
type ExportOptions struct {
TeamsToExport []string `json:"teams"`
ChannelsToExport []string `json:"channels"`
UsersToExport []string `json:"users"`
ExportLocalStorage bool `json:"export_local_storage"`
}
func (options *ExportOptions) ToJson() string {
b, err := json.Marshal(options)
if err != nil {
return ""
} else {
return string(b)
}
}
func ExportOptionsFromJson(data io.Reader) *ExportOptions {
decoder := json.NewDecoder(data)
var o ExportOptions
decoder.Decode(&o)
return &o
}
func ExportToFile(options *ExportOptions) (link string, err *model.AppError) {
// Open file for export
if file, err := openFileWriteStream(EXPORT_PATH + EXPORT_FILENAME); err != nil {
return "", err
} else {
defer closeFileWriteStream(file)
ExportToWriter(file, options)
}
return "/api/v1/files/get_export", nil
}
func ExportToWriter(w io.Writer, options *ExportOptions) *model.AppError {
// Open a writer to write to zip file
zipWriter := zip.NewWriter(w)
defer zipWriter.Close()
// Write our options to file
if optionsFile, err := zipWriter.Create(EXPORT_OPTIONS_FILE); err != nil {
return model.NewLocAppError("ExportToWriter", "api.export.options.create.app_error", nil, err.Error())
} else {
if _, err := optionsFile.Write([]byte(options.ToJson())); err != nil {
return model.NewLocAppError("ExportToWriter", "api.export.options.write.app_error", nil, err.Error())
}
}
// Export Teams
ExportTeams(zipWriter, options)
return nil
}
func ExportTeams(writer ExportWriter, options *ExportOptions) *model.AppError {
// Get the teams
var teams []*model.Team
if len(options.TeamsToExport) == 0 {
if result := <-Srv.Store.Team().GetAll(); result.Err != nil {
return result.Err
} else {
teams = result.Data.([]*model.Team)
}
} else {
for _, teamId := range options.TeamsToExport {
if result := <-Srv.Store.Team().Get(teamId); result.Err != nil {
return result.Err
} else {
team := result.Data.(*model.Team)
teams = append(teams, team)
}
}
}
// Export the teams
for i := range teams {
// Sanitize
teams[i].PreExport()
if teamFile, err := writer.Create(EXPORT_TEAMS_FOLDER + "/" + teams[i].Name + ".json"); err != nil {
return model.NewLocAppError("ExportTeams", "api.export.open_file.app_error", nil, err.Error())
} else {
if _, err := teamFile.Write([]byte(teams[i].ToJson())); err != nil {
return model.NewLocAppError("ExportTeams", "api.export.write_file.app_error", nil, err.Error())
}
}
}
// Export the channels, local storage and users
for _, team := range teams {
if err := ExportChannels(writer, options, team.Id); err != nil {
return err
}
if err := ExportUsers(writer, options, team.Id); err != nil {
return err
}
if err := ExportLocalStorage(writer, options, team.Id); err != nil {
return err
}
}
return nil
}
func ExportChannels(writer ExportWriter, options *ExportOptions, teamId string) *model.AppError {
// Get the channels
var channels []*model.Channel
if len(options.ChannelsToExport) == 0 {
if result := <-Srv.Store.Channel().GetForExport(teamId); result.Err != nil {
return result.Err
} else {
channels = result.Data.([]*model.Channel)
}
} else {
for _, channelId := range options.ChannelsToExport {
if result := <-Srv.Store.Channel().Get(channelId); result.Err != nil {
return result.Err
} else {
channel := result.Data.(*model.Channel)
channels = append(channels, channel)
}
}
}
for i := range channels {
// Get members
mchan := Srv.Store.Channel().GetMembers(channels[i].Id)
// Sanitize
channels[i].PreExport()
if channelFile, err := writer.Create(EXPORT_CHANNELS_FOLDER + "/" + channels[i].Id + ".json"); err != nil {
return model.NewLocAppError("ExportChannels", "api.export.open_file.app_error", nil, err.Error())
} else {
if _, err := channelFile.Write([]byte(channels[i].ToJson())); err != nil {
return model.NewLocAppError("ExportChannels", "api.export.write_file.app_error", nil, err.Error())
}
}
var members []model.ChannelMember
if result := <-mchan; result.Err != nil {
return result.Err
} else {
members = result.Data.([]model.ChannelMember)
}
if membersFile, err := writer.Create(EXPORT_CHANNELS_FOLDER + "/" + channels[i].Id + "_members.json"); err != nil {
return model.NewLocAppError("ExportChannels", "api.export.open_file.app_error", nil, err.Error())
} else {
result, err2 := json.Marshal(members)
if err2 != nil {
return model.NewLocAppError("ExportChannels", "api.export.json.app_error", nil, err.Error())
}
if _, err3 := membersFile.Write([]byte(result)); err3 != nil {
return model.NewLocAppError("ExportChannels", "api.export.write_file.app_error", nil, err.Error())
}
}
}
for _, channel := range channels {
if err := ExportPosts(writer, options, channel.Id); err != nil {
return err
}
}
return nil
}
func ExportPosts(writer ExportWriter, options *ExportOptions, channelId string) *model.AppError {
// Get the posts
var posts []*model.Post
if result := <-Srv.Store.Post().GetForExport(channelId); result.Err != nil {
return result.Err
} else {
posts = result.Data.([]*model.Post)
}
// Export the posts
if postsFile, err := writer.Create(EXPORT_POSTS_FOLDER + "/" + channelId + "_posts.json"); err != nil {
return model.NewLocAppError("ExportPosts", "api.export.open_file.app_error", nil, err.Error())
} else {
result, err2 := json.Marshal(posts)
if err2 != nil {
return model.NewLocAppError("ExportPosts", "api.export.json.app_error", nil, err.Error())
}
if _, err3 := postsFile.Write([]byte(result)); err3 != nil {
return model.NewLocAppError("ExportPosts", "api.export.write_file.app_error", nil, err.Error())
}
}
return nil
}
func ExportUsers(writer ExportWriter, options *ExportOptions, teamId string) *model.AppError {
// Get the users
var users []*model.User
if result := <-Srv.Store.User().GetForExport(teamId); result.Err != nil {
return result.Err
} else {
users = result.Data.([]*model.User)
}
// Write the users
if usersFile, err := writer.Create(EXPORT_USERS_FOLDER + "/" + teamId + "_users.json"); err != nil {
return model.NewLocAppError("ExportUsers", "api.export.open_file.app_error", nil, err.Error())
} else {
result, err2 := json.Marshal(users)
if err2 != nil {
return model.NewLocAppError("ExportUsers", "api.export.json.app_error", nil, err.Error())
}
if _, err3 := usersFile.Write([]byte(result)); err3 != nil {
return model.NewLocAppError("ExportUsers", "api.export.write_file.app_error", nil, err.Error())
}
}
return nil
}
func copyDirToExportWriter(writer ExportWriter, inPath string, outPath string) *model.AppError {
dir, err := os.Open(inPath)
if err != nil {
return model.NewLocAppError("copyDirToExportWriter", "api.export.open_dir.app_error", nil, err.Error())
}
fileInfoList, err := dir.Readdir(0)
if err != nil {
return model.NewLocAppError("copyDirToExportWriter", "api.export.read_dir.app_error", nil, err.Error())
}
for _, fileInfo := range fileInfoList {
if fileInfo.IsDir() {
copyDirToExportWriter(writer, inPath+"/"+fileInfo.Name(), outPath+"/"+fileInfo.Name())
} else {
if toFile, err := writer.Create(outPath + "/" + fileInfo.Name()); err != nil {
return model.NewLocAppError("copyDirToExportWriter", "api.export.open_file.app_error", nil, err.Error())
} else {
fromFile, err := os.Open(inPath + "/" + fileInfo.Name())
if err != nil {
return model.NewLocAppError("copyDirToExportWriter", "api.export.open.app_error", nil, err.Error())
}
io.Copy(toFile, fromFile)
}
}
}
return nil
}
func ExportLocalStorage(writer ExportWriter, options *ExportOptions, teamId string) *model.AppError {
teamDir := utils.Cfg.FileSettings.Directory + "teams/" + teamId
if utils.Cfg.FileSettings.DriverName == model.IMAGE_DRIVER_S3 {
return model.NewLocAppError("ExportLocalStorage", "api.export.s3.app_error", nil, "")
} else if utils.Cfg.FileSettings.DriverName == model.IMAGE_DRIVER_LOCAL {
if err := copyDirToExportWriter(writer, teamDir, EXPORT_LOCAL_STORAGE_FOLDER); err != nil {
return err
}
}
return nil
}
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