Files
mostlymatter/api/post.go
Joram Wilander e9c9688b34 Move permissions code into app package (#5146)
* Move permissions code into app package

* Revert getPosts permission
2017-01-23 08:12:05 -05:00

691 строка
19 KiB
Go

// Copyright (c) 2015 Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package api
import (
"net/http"
"strconv"
l4g "github.com/alecthomas/log4go"
"github.com/dyatlov/go-opengraph/opengraph"
"github.com/gorilla/mux"
"github.com/mattermost/platform/app"
"github.com/mattermost/platform/model"
"github.com/mattermost/platform/store"
"github.com/mattermost/platform/utils"
)
func InitPost() {
l4g.Debug(utils.T("api.post.init.debug"))
BaseRoutes.ApiRoot.Handle("/get_opengraph_metadata", ApiUserRequired(getOpenGraphMetadata)).Methods("POST")
BaseRoutes.NeedTeam.Handle("/posts/search", ApiUserRequiredActivity(searchPosts, true)).Methods("POST")
BaseRoutes.NeedTeam.Handle("/posts/flagged/{offset:[0-9]+}/{limit:[0-9]+}", ApiUserRequired(getFlaggedPosts)).Methods("GET")
BaseRoutes.NeedTeam.Handle("/posts/{post_id}", ApiUserRequired(getPostById)).Methods("GET")
BaseRoutes.NeedTeam.Handle("/pltmp/{post_id}", ApiUserRequired(getPermalinkTmp)).Methods("GET")
BaseRoutes.Posts.Handle("/create", ApiUserRequiredActivity(createPost, true)).Methods("POST")
BaseRoutes.Posts.Handle("/update", ApiUserRequiredActivity(updatePost, true)).Methods("POST")
BaseRoutes.Posts.Handle("/page/{offset:[0-9]+}/{limit:[0-9]+}", ApiUserRequired(getPosts)).Methods("GET")
BaseRoutes.Posts.Handle("/since/{time:[0-9]+}", ApiUserRequired(getPostsSince)).Methods("GET")
BaseRoutes.NeedPost.Handle("/get", ApiUserRequired(getPost)).Methods("GET")
BaseRoutes.NeedPost.Handle("/delete", ApiUserRequiredActivity(deletePost, true)).Methods("POST")
BaseRoutes.NeedPost.Handle("/before/{offset:[0-9]+}/{num_posts:[0-9]+}", ApiUserRequired(getPostsBefore)).Methods("GET")
BaseRoutes.NeedPost.Handle("/after/{offset:[0-9]+}/{num_posts:[0-9]+}", ApiUserRequired(getPostsAfter)).Methods("GET")
BaseRoutes.NeedPost.Handle("/get_file_infos", ApiUserRequired(getFileInfosForPost)).Methods("GET")
}
func createPost(c *Context, w http.ResponseWriter, r *http.Request) {
post := model.PostFromJson(r.Body)
if post == nil {
c.SetInvalidParam("createPost", "post")
return
}
post.UserId = c.Session.UserId
cchan := app.Srv.Store.Channel().Get(post.ChannelId, true)
if !app.SessionHasPermissionToChannel(c.Session, post.ChannelId, model.PERMISSION_CREATE_POST) {
c.SetPermissionError(model.PERMISSION_CREATE_POST)
return
}
// Check that channel has not been deleted
var channel *model.Channel
if result := <-cchan; result.Err != nil {
c.SetInvalidParam("createPost", "post.channelId")
return
} else {
channel = result.Data.(*model.Channel)
}
if channel.DeleteAt != 0 {
c.Err = model.NewLocAppError("createPost", "api.post.create_post.can_not_post_to_deleted.error", nil, "")
c.Err.StatusCode = http.StatusBadRequest
return
}
if post.CreateAt != 0 && !app.SessionHasPermissionTo(c.Session, model.PERMISSION_MANAGE_SYSTEM) {
post.CreateAt = 0
}
if rp, err := app.CreatePost(post, c.TeamId, true); err != nil {
c.Err = err
if c.Err.Id == "api.post.create_post.root_id.app_error" ||
c.Err.Id == "api.post.create_post.channel_root_id.app_error" ||
c.Err.Id == "api.post.create_post.parent_id.app_error" {
c.Err.StatusCode = http.StatusBadRequest
}
return
} else {
// Update the LastViewAt only if the post does not have from_webhook prop set (eg. Zapier app)
if _, ok := post.Props["from_webhook"]; !ok {
if result := <-app.Srv.Store.Channel().UpdateLastViewedAt([]string{post.ChannelId}, c.Session.UserId); result.Err != nil {
l4g.Error(utils.T("api.post.create_post.last_viewed.error"), post.ChannelId, c.Session.UserId, result.Err)
}
}
w.Write([]byte(rp.ToJson()))
}
}
func updatePost(c *Context, w http.ResponseWriter, r *http.Request) {
if utils.IsLicensed {
if *utils.Cfg.ServiceSettings.AllowEditPost == model.ALLOW_EDIT_POST_NEVER {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.permissions.app_error", nil,
c.T("api.post.update_post.permissions_denied.app_error"))
c.Err.StatusCode = http.StatusForbidden
return
}
}
post := model.PostFromJson(r.Body)
if post == nil {
c.SetInvalidParam("updatePost", "post")
return
}
pchan := app.Srv.Store.Post().Get(post.Id)
if !app.SessionHasPermissionToChannel(c.Session, post.ChannelId, model.PERMISSION_EDIT_POST) {
c.SetPermissionError(model.PERMISSION_EDIT_POST)
return
}
var oldPost *model.Post
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
oldPost = result.Data.(*model.PostList).Posts[post.Id]
if oldPost == nil {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.find.app_error", nil, "id="+post.Id)
c.Err.StatusCode = http.StatusBadRequest
return
}
if oldPost.UserId != c.Session.UserId {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.permissions.app_error", nil, "oldUserId="+oldPost.UserId)
c.Err.StatusCode = http.StatusForbidden
return
}
if oldPost.DeleteAt != 0 {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.permissions.app_error", nil,
c.T("api.post.update_post.permissions_details.app_error", map[string]interface{}{"PostId": post.Id}))
c.Err.StatusCode = http.StatusForbidden
return
}
if oldPost.IsSystemMessage() {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.system_message.app_error", nil, "id="+post.Id)
c.Err.StatusCode = http.StatusForbidden
return
}
if utils.IsLicensed {
if *utils.Cfg.ServiceSettings.AllowEditPost == model.ALLOW_EDIT_POST_TIME_LIMIT && model.GetMillis() > oldPost.CreateAt+int64(*utils.Cfg.ServiceSettings.PostEditTimeLimit*1000) {
c.Err = model.NewLocAppError("updatePost", "api.post.update_post.permissions.app_error", nil,
c.T("api.post.update_post.permissions_time_limit.app_error", map[string]interface{}{"timeLimit": *utils.Cfg.ServiceSettings.PostEditTimeLimit}))
c.Err.StatusCode = http.StatusForbidden
return
}
}
}
newPost := &model.Post{}
*newPost = *oldPost
newPost.Message = post.Message
newPost.EditAt = model.GetMillis()
newPost.Hashtags, _ = model.ParseHashtags(post.Message)
if result := <-app.Srv.Store.Post().Update(newPost, oldPost); result.Err != nil {
c.Err = result.Err
return
} else {
rpost := result.Data.(*model.Post)
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_EDITED, "", rpost.ChannelId, "", nil)
message.Add("post", rpost.ToJson())
go app.Publish(message)
app.InvalidateCacheForChannelPosts(rpost.ChannelId)
w.Write([]byte(rpost.ToJson()))
}
}
func getFlaggedPosts(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
offset, err := strconv.Atoi(params["offset"])
if err != nil {
c.SetInvalidParam("getFlaggedPosts", "offset")
return
}
limit, err := strconv.Atoi(params["limit"])
if err != nil {
c.SetInvalidParam("getFlaggedPosts", "limit")
return
}
posts := &model.PostList{}
if result := <-app.Srv.Store.Post().GetFlaggedPosts(c.Session.UserId, offset, limit); result.Err != nil {
c.Err = result.Err
return
} else {
posts = result.Data.(*model.PostList)
}
w.Write([]byte(posts.ToJson()))
}
func getPosts(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
id := params["channel_id"]
if len(id) != 26 {
c.SetInvalidParam("getPosts", "channelId")
return
}
offset, err := strconv.Atoi(params["offset"])
if err != nil {
c.SetInvalidParam("getPosts", "offset")
return
}
limit, err := strconv.Atoi(params["limit"])
if err != nil {
c.SetInvalidParam("getPosts", "limit")
return
}
etagChan := app.Srv.Store.Post().GetEtag(id, true)
if !app.SessionHasPermissionToChannel(c.Session, id, model.PERMISSION_CREATE_POST) {
c.SetPermissionError(model.PERMISSION_CREATE_POST)
return
}
etag := (<-etagChan).Data.(string)
if HandleEtag(etag, "Get Posts", w, r) {
return
}
pchan := app.Srv.Store.Post().GetPosts(id, offset, limit, true)
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
list := result.Data.(*model.PostList)
w.Header().Set(model.HEADER_ETAG_SERVER, etag)
w.Write([]byte(list.ToJson()))
}
}
func getPostsSince(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
id := params["channel_id"]
if len(id) != 26 {
c.SetInvalidParam("getPostsSince", "channelId")
return
}
time, err := strconv.ParseInt(params["time"], 10, 64)
if err != nil {
c.SetInvalidParam("getPostsSince", "time")
return
}
pchan := app.Srv.Store.Post().GetPostsSince(id, time, true)
if !app.SessionHasPermissionToChannel(c.Session, id, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
list := result.Data.(*model.PostList)
w.Write([]byte(list.ToJson()))
}
}
func getPost(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("getPost", "channelId")
return
}
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("getPost", "postId")
return
}
pchan := app.Srv.Store.Post().Get(postId)
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else if HandleEtag(result.Data.(*model.PostList).Etag(), "Get Post", w, r) {
return
} else {
list := result.Data.(*model.PostList)
if !list.IsChannelId(channelId) {
c.Err = model.NewLocAppError("getPost", "api.post.get_post.permissions.app_error", nil, "")
c.Err.StatusCode = http.StatusForbidden
return
}
w.Header().Set(model.HEADER_ETAG_SERVER, list.Etag())
w.Write([]byte(list.ToJson()))
}
}
func getPostById(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("getPostById", "postId")
return
}
if result := <-app.Srv.Store.Post().Get(postId); result.Err != nil {
c.Err = result.Err
return
} else {
list := result.Data.(*model.PostList)
if len(list.Order) != 1 {
c.Err = model.NewLocAppError("getPostById", "api.post_get_post_by_id.get.app_error", nil, "")
return
}
post := list.Posts[list.Order[0]]
if !app.SessionHasPermissionToChannel(c.Session, post.ChannelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
if HandleEtag(list.Etag(), "Get Post By Id", w, r) {
return
}
w.Header().Set(model.HEADER_ETAG_SERVER, list.Etag())
w.Write([]byte(list.ToJson()))
}
}
func getPermalinkTmp(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("getPermalinkTmp", "postId")
return
}
if result := <-app.Srv.Store.Post().Get(postId); result.Err != nil {
c.Err = result.Err
return
} else {
list := result.Data.(*model.PostList)
if len(list.Order) != 1 {
c.Err = model.NewLocAppError("getPermalinkTmp", "api.post_get_post_by_id.get.app_error", nil, "")
return
}
post := list.Posts[list.Order[0]]
var channel *model.Channel
var err *model.AppError
if channel, err = app.GetChannel(post.ChannelId); err != nil {
c.Err = err
return
}
if !app.SessionHasPermissionToTeam(c.Session, channel.TeamId, model.PERMISSION_JOIN_PUBLIC_CHANNELS) {
c.SetPermissionError(model.PERMISSION_JOIN_PUBLIC_CHANNELS)
return
}
if err = app.JoinChannel(channel, c.Session.UserId); err != nil {
c.Err = err
return
}
if HandleEtag(list.Etag(), "Get Permalink TMP", w, r) {
return
}
w.Header().Set(model.HEADER_ETAG_SERVER, list.Etag())
w.Write([]byte(list.ToJson()))
}
}
func deletePost(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("deletePost", "channelId")
return
}
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("deletePost", "postId")
return
}
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_DELETE_POST) {
c.SetPermissionError(model.PERMISSION_DELETE_POST)
return
}
pchan := app.Srv.Store.Post().Get(postId)
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
post := result.Data.(*model.PostList).Posts[postId]
if post == nil {
c.SetInvalidParam("deletePost", "postId")
return
}
if post.ChannelId != channelId {
c.Err = model.NewLocAppError("deletePost", "api.post.delete_post.permissions.app_error", nil, "")
c.Err.StatusCode = http.StatusForbidden
return
}
if post.UserId != c.Session.UserId && !app.SessionHasPermissionToChannel(c.Session, post.ChannelId, model.PERMISSION_DELETE_OTHERS_POSTS) {
c.Err = model.NewLocAppError("deletePost", "api.post.delete_post.permissions.app_error", nil, "")
c.Err.StatusCode = http.StatusForbidden
return
}
if dresult := <-app.Srv.Store.Post().Delete(postId, model.GetMillis()); dresult.Err != nil {
c.Err = dresult.Err
return
}
message := model.NewWebSocketEvent(model.WEBSOCKET_EVENT_POST_DELETED, "", post.ChannelId, "", nil)
message.Add("post", post.ToJson())
go app.Publish(message)
go DeletePostFiles(post)
go DeleteFlaggedPost(c.Session.UserId, post)
app.InvalidateCacheForChannelPosts(post.ChannelId)
result := make(map[string]string)
result["id"] = postId
w.Write([]byte(model.MapToJson(result)))
}
}
func DeleteFlaggedPost(userId string, post *model.Post) {
if result := <-app.Srv.Store.Preference().Delete(userId, model.PREFERENCE_CATEGORY_FLAGGED_POST, post.Id); result.Err != nil {
l4g.Warn(utils.T("api.post.delete_flagged_post.app_error.warn"), result.Err)
return
}
}
func DeletePostFiles(post *model.Post) {
if len(post.FileIds) != 0 {
return
}
if result := <-app.Srv.Store.FileInfo().DeleteForPost(post.Id); result.Err != nil {
l4g.Warn(utils.T("api.post.delete_post_files.app_error.warn"), post.Id, result.Err)
}
}
func getPostsBefore(c *Context, w http.ResponseWriter, r *http.Request) {
getPostsBeforeOrAfter(c, w, r, true)
}
func getPostsAfter(c *Context, w http.ResponseWriter, r *http.Request) {
getPostsBeforeOrAfter(c, w, r, false)
}
func getPostsBeforeOrAfter(c *Context, w http.ResponseWriter, r *http.Request, before bool) {
params := mux.Vars(r)
id := params["channel_id"]
if len(id) != 26 {
c.SetInvalidParam("getPostsBeforeOrAfter", "channelId")
return
}
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("getPostsBeforeOrAfter", "postId")
return
}
numPosts, err := strconv.Atoi(params["num_posts"])
if err != nil || numPosts <= 0 {
c.SetInvalidParam("getPostsBeforeOrAfter", "numPosts")
return
}
offset, err := strconv.Atoi(params["offset"])
if err != nil || offset < 0 {
c.SetInvalidParam("getPostsBeforeOrAfter", "offset")
return
}
// We can do better than this etag in this situation
etagChan := app.Srv.Store.Post().GetEtag(id, true)
if !app.SessionHasPermissionToChannel(c.Session, id, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
etag := (<-etagChan).Data.(string)
if HandleEtag(etag, "Get Posts Before or After", w, r) {
return
}
var pchan store.StoreChannel
if before {
pchan = app.Srv.Store.Post().GetPostsBefore(id, postId, numPosts, offset)
} else {
pchan = app.Srv.Store.Post().GetPostsAfter(id, postId, numPosts, offset)
}
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
list := result.Data.(*model.PostList)
w.Header().Set(model.HEADER_ETAG_SERVER, etag)
w.Write([]byte(list.ToJson()))
}
}
func searchPosts(c *Context, w http.ResponseWriter, r *http.Request) {
props := model.StringInterfaceFromJson(r.Body)
terms := props["terms"].(string)
if len(terms) == 0 {
c.SetInvalidParam("search", "terms")
return
}
isOrSearch := false
if val, ok := props["is_or_search"]; ok && val != nil {
isOrSearch = val.(bool)
}
paramsList := model.ParseSearchParams(terms)
channels := []store.StoreChannel{}
for _, params := range paramsList {
params.OrTerms = isOrSearch
// don't allow users to search for everything
if params.Terms != "*" {
channels = append(channels, app.Srv.Store.Post().Search(c.TeamId, c.Session.UserId, params))
}
}
posts := &model.PostList{}
for _, channel := range channels {
if result := <-channel; result.Err != nil {
c.Err = result.Err
return
} else {
data := result.Data.(*model.PostList)
posts.Extend(data)
}
}
w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
w.Write([]byte(posts.ToJson()))
}
func getFileInfosForPost(c *Context, w http.ResponseWriter, r *http.Request) {
params := mux.Vars(r)
channelId := params["channel_id"]
if len(channelId) != 26 {
c.SetInvalidParam("getFileInfosForPost", "channelId")
return
}
postId := params["post_id"]
if len(postId) != 26 {
c.SetInvalidParam("getFileInfosForPost", "postId")
return
}
pchan := app.Srv.Store.Post().Get(postId)
fchan := app.Srv.Store.FileInfo().GetForPost(postId)
if !app.SessionHasPermissionToChannel(c.Session, channelId, model.PERMISSION_READ_CHANNEL) {
c.SetPermissionError(model.PERMISSION_READ_CHANNEL)
return
}
var infos []*model.FileInfo
if result := <-fchan; result.Err != nil {
c.Err = result.Err
return
} else {
infos = result.Data.([]*model.FileInfo)
}
if len(infos) == 0 {
// No FileInfos were returned so check if they need to be created for this post
var post *model.Post
if result := <-pchan; result.Err != nil {
c.Err = result.Err
return
} else {
post = result.Data.(*model.PostList).Posts[postId]
}
if len(post.Filenames) > 0 {
// The post has Filenames that need to be replaced with FileInfos
infos = app.MigrateFilenamesToFileInfos(post)
}
}
etag := model.GetEtagForFileInfos(infos)
if HandleEtag(etag, "Get File Infos For Post", w, r) {
return
} else {
w.Header().Set("Cache-Control", "max-age=2592000, public")
w.Header().Set(model.HEADER_ETAG_SERVER, etag)
w.Write([]byte(model.FileInfosToJson(infos)))
}
}
func getOpenGraphMetadata(c *Context, w http.ResponseWriter, r *http.Request) {
props := model.StringInterfaceFromJson(r.Body)
og := opengraph.NewOpenGraph()
res, err := http.Get(props["url"].(string))
if err != nil {
writeOpenGraphToResponse(w, og)
return
}
if err := og.ProcessHTML(res.Body); err != nil {
writeOpenGraphToResponse(w, og)
return
}
writeOpenGraphToResponse(w, og)
}
func writeOpenGraphToResponse(w http.ResponseWriter, og *opengraph.OpenGraph) {
ogJson, err := og.ToJSON()
if err != nil {
w.Write([]byte(`{"url": ""}`))
}
w.Write(ogJson)
}