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localize post and comment links

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This commit is contained in:
Ryan Stafford 2023-07-16 09:00:49 -04:00
parent 9782144dcb
commit 0f4242e61e
3 changed files with 103 additions and 21 deletions
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5
main.go
View file

@ -79,7 +79,7 @@ func test() {
[]string{"https://lemmy.world/c/dude", "/lemmy.local/c/dude@lemmy.world", "/c/dude@lemmy.world"},
[]string{"https://lemmy.world/u/dude", "/lemmy.local/u/dude@lemmy.world", "/u/dude@lemmy.world"},
[]string{"https://lemmy.world/u/dude@lemmy.world", "/lemmy.local/u/dude@lemmy.world", "/u/dude@lemmy.world"},
[]string{"https://lemmy.world/post/123", "/lemmy.world/post/123", "https://lemmy.world/post/123"},
[]string{"https://lemmy.world/post/123", "/lemmy.local/post/123@lemmy.world", "/post/123@lemmy.world"},
[]string{"/post/123", "/lemmy.local/post/123", "/post/123"},
[]string{"/comment/123", "/lemmy.local/comment/123", "/comment/123"},
[]string{"https://lemmy.local/comment/123", "/lemmy.local/comment/123", "/comment/123"},
@ -88,7 +88,7 @@ func test() {
output := LemmyLinkRewrite(`href="`+url[0]+`"`, "lemmy.local", "")
success := (output == (`href="` + url[1] + `"`))
if !success {
fmt.Println("\n!!!! Link rewrite failure !!!!")
fmt.Println("\n!!!! multi instance link rewrite failure !!!!")
fmt.Println(url)
fmt.Println(output)
fmt.Println("")
@ -96,6 +96,7 @@ func test() {
output = LemmyLinkRewrite(`href="`+url[0]+`"`, ".", "lemmy.local")
success = (output == (`href="` + url[2] + `"`))
if !success {
fmt.Println("\n!!!! single instance link rewrite failure !!!!")
fmt.Println(success, url)
fmt.Println(output)
fmt.Println("")

91
routes.go
View file

@ -167,21 +167,21 @@ func LemmyLinkRewrite(input string, host string, lemmy_domain string) (body stri
// community bangs
body = RegReplace(body, `!([a-zA-Z0-9]+)@([a-zA-Z0-9\.\-]+)([ \n\r]+|<\/p>)`, `<a href="/c/$1@$2">!$1@$2</a> `)
// localize community and user links
body = RegReplace(body, `href="https:\/\/([a-zA-Z0-9\.\-]+)\/((c|u)\/.*?)"`, `href="/$2@$1"`)
body = RegReplace(body, `href="https:\/\/([a-zA-Z0-9\.\-]+)\/((c|u|comment|post)\/.*?)"`, `href="/$2@$1"`)
// remove extra instance tag
body = RegReplace(body, `href="(https:\/)?(\/[a-zA-Z0-9\.\-]+)?\/((c|u)\/[a-zA-Z0-9]+@[a-zA-Z0-9\.\-]+)@([a-zA-Z0-9\.\-]+)"`, `href="/$3"`)
if lemmy_domain == "" {
// add domain to relative links
body = RegReplace(body, `href="\/(c\/[a-zA-Z0-9\-]+"|(post|comment)\/\d+"|(c|u)\/(.*?)")`, `href="/`+host+`/$1`)
body = RegReplace(body, `href="\/((c|u|post|comment)\/(.*?)")`, `href="/`+host+`/$1`)
// convert links to relative
body = RegReplace(body, `href="https:\/\/([a-zA-Z0-9\.\-]+\/(c\/[a-zA-Z0-9]+"|(post|comment)\/\d+"|u\/(.*?)"))`, `href="/$1`)
body = RegReplace(body, `href="https:\/\/([a-zA-Z0-9\.\-]+\/((c|u|post|comment)\/[a-zA-Z0-9]+"))`, `href="/$1`)
} else {
// convert local links to relative
body = RegReplace(body, `href="https:\/\/`+lemmy_domain+`\/(c\/[a-zA-Z0-9]+"|(post|comment)\/\d+"|u\/(.*?)")`, `href="/$1`)
body = RegReplace(body, `href="https:\/\/`+lemmy_domain+`\/(c\/[a-zA-Z0-9]+"|(c|u|post|comment)\/(.*?)")`, `href="/$1`)
body = RegReplace(body, `href="(.*)@`+lemmy_domain+`"`, `href="$1"`)
}
// remove redundant instance tag
re := regexp.MustCompile(`href="\/([a-zA-Z0-9\.\-]+)\/(c|u)\/(.*?)@(.*?)"`)
re := regexp.MustCompile(`href="\/([a-zA-Z0-9\.\-]+)\/(c|u|post|comment)\/(.*?)@(.*?)"`)
matches := re.FindAllStringSubmatch(body, -1)
for _, match := range matches {
if match[1] == match[4] {
@ -416,12 +416,67 @@ func GetFrontpage(w http.ResponseWriter, r *http.Request, ps httprouter.Params)
}
}
func ResolveId(r *http.Request, class string, id string, host string) string {
remoteAddr := r.RemoteAddr
if r.Header.Get("CF-Connecting-IP") != "" {
remoteAddr = r.Header.Get("CF-Connecting-IP")
}
client := http.Client{Transport: NewAddHeaderTransport(remoteAddr)}
c, err := lemmy.NewWithClient("https://"+host, &client)
if err != nil {
return ""
}
idn, _ := strconv.Atoi(id)
if class == "post" {
resp, err := c.Post(context.Background(), types.GetPost{
ID: types.NewOptional(idn),
})
if err != nil {
return ""
}
return resp.PostView.Post.ApID
}
resp, err := c.Comment(context.Background(), types.GetComment{
ID: idn,
})
if err != nil {
return ""
}
return resp.CommentView.Comment.ApID
}
func GetPost(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
state, err := Initialize(ps.ByName("host"), r)
if err != nil {
Render(w, "index.html", state)
return
}
if path := strings.Split(ps.ByName("postid"), "@"); len(path) > 1 {
apid := ResolveId(r, "post", path[0], path[1])
if apid != "" {
resp, err := state.Client.ResolveObject(context.Background(), types.ResolveObject{
Q: apid,
})
if err != nil {
dest := apid
if os.Getenv("LEMMY_DOMAIN") == "" {
dest = RegReplace(dest, `https:\/\/([a-zA-Z0-9\.\-]+\/post\/\d+)`, `/$1`)
}
http.Redirect(w, r, dest, 302)
return
}
post, _ := resp.Post.Value()
if post.Post.ID > 0 {
dest := RegReplace(r.URL.String(), `(([a-zA-Z0-9\.\-]+)?/post/)([a-zA-Z0-9\-\.@]+)`, `$1`)
dest += strconv.Itoa(post.Post.ID)
http.Redirect(w, r, dest, 302)
return
} else {
http.Redirect(w, r, apid, 302)
return
}
}
}
m, _ := url.ParseQuery(r.URL.RawQuery)
if len(m["edit"]) > 0 {
state.Op = "edit_post"
@ -438,6 +493,32 @@ func GetComment(w http.ResponseWriter, r *http.Request, ps httprouter.Params) {
Render(w, "index.html", state)
return
}
if path := strings.Split(ps.ByName("commentid"), "@"); len(path) > 1 {
apid := ResolveId(r, "comment", path[0], path[1])
if apid != "" {
resp, err := state.Client.ResolveObject(context.Background(), types.ResolveObject{
Q: apid,
})
if err != nil {
dest := apid
if os.Getenv("LEMMY_DOMAIN") == "" {
dest = RegReplace(dest, `https:\/\/([a-zA-Z0-9\.\-]+\/comment\/\d+)`, `/$1`)
}
http.Redirect(w, r, dest, 302)
return
}
comment, _ := resp.Comment.Value()
if comment.Comment.ID > 0 {
dest := RegReplace(r.URL.String(), `(([a-zA-Z0-9\.\-]+)?/comment/)([a-zA-Z0-9\-\.@]+)`, `$1`)
dest += strconv.Itoa(comment.Comment.ID)
http.Redirect(w, r, dest, 302)
return
} else {
http.Redirect(w, r, apid, 302)
return
}
}
}
m, _ := url.ParseQuery(r.URL.RawQuery)
if len(m["reply"]) > 0 {
state.Op = "reply"

28
state.go
View file

@ -596,22 +596,22 @@ func (state *State) GetPost(postid int) {
})
if err != nil {
state.Status = http.StatusInternalServerError
state.Error = err
return
} else {
state.Posts = []Post{Post{
PostView: resp.PostView,
State: state,
}}
if state.CommentID > 0 && len(state.Posts) > 0 {
state.Posts[0].Rank = -1
}
state.CommunityName = resp.PostView.Community.Name
cresp := types.GetCommunityResponse{
CommunityView: resp.CommunityView,
Moderators: resp.Moderators,
}
state.Community = &cresp
}
state.Posts = []Post{Post{
PostView: resp.PostView,
State: state,
}}
if state.CommentID > 0 && len(state.Posts) > 0 {
state.Posts[0].Rank = -1
}
state.CommunityName = resp.PostView.Community.Name
cresp := types.GetCommunityResponse{
CommunityView: resp.CommunityView,
Moderators: resp.Moderators,
}
state.Community = &cresp
}
func (state *State) GetCommunity(communityName string) {