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Remove tracking params from post url (fixes #768)

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This commit is contained in:
Felix Ableitner 2021-06-18 20:38:34 +02:00
parent 9e48e23477
commit 53fc8600fe
3 changed files with 31 additions and 4 deletions
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4
crates/api_crud/src/post/create.rs
View file

@ -13,7 +13,7 @@ use lemmy_db_schema::source::post::*;
use lemmy_db_views::post_view::PostView;
use lemmy_utils::{
request::fetch_iframely_and_pictrs_data,
utils::{check_slurs, check_slurs_opt, is_valid_post_title},
utils::{check_slurs, check_slurs_opt, clean_url_params, is_valid_post_title},
ApiError,
ConnectionId,
LemmyError,
@ -48,7 +48,7 @@ impl PerformCrud for CreatePost {
let post_form = PostForm {
name: data.name.trim().to_owned(),
url: data_url.map(|u| u.to_owned().into()),
url: data_url.map(|u| clean_url_params(u.to_owned()).into()),
body: data.body.to_owned(),
community_id: data.community_id,
creator_id: local_user_view.person.id,

4
crates/api_crud/src/post/update.rs
View file

@ -7,7 +7,7 @@ use lemmy_db_schema::{naive_now, source::post::*};
use lemmy_db_views::post_view::PostView;
use lemmy_utils::{
request::fetch_iframely_and_pictrs_data,
utils::{check_slurs_opt, is_valid_post_title},
utils::{check_slurs_opt, clean_url_params, is_valid_post_title},
ApiError,
ConnectionId,
LemmyError,
@ -59,7 +59,7 @@ impl PerformCrud for EditPost {
creator_id: orig_post.creator_id.to_owned(),
community_id: orig_post.community_id,
name: data.name.to_owned().unwrap_or(orig_post.name),
url: data_url.map(|u| u.to_owned().into()),
url: data_url.map(|u| clean_url_params(u.to_owned()).into()),
body: data.body.to_owned(),
nsfw: data.nsfw,
updated: Some(naive_now()),

27
crates/utils/src/utils.rs
View file

@ -4,6 +4,7 @@ use chrono::{DateTime, FixedOffset, NaiveDateTime};
use itertools::Itertools;
use rand::{distributions::Alphanumeric, thread_rng, Rng};
use regex::{Regex, RegexBuilder};
use url::Url;
lazy_static! {
static ref EMAIL_REGEX: Regex = Regex::new(r"^[a-zA-Z0-9.!#$%&’*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$").expect("compile regex");
@ -25,6 +26,8 @@ lazy_static! {
static ref VALID_COMMUNITY_NAME_REGEX: Regex = Regex::new(r"^[a-z0-9_]{3,20}$").expect("compile regex");
static ref VALID_POST_TITLE_REGEX: Regex = Regex::new(r".*\S.*").expect("compile regex");
static ref VALID_MATRIX_ID_REGEX: Regex = Regex::new(r"^@[A-Za-z0-9._=-]+:[A-Za-z0-9.-]+\.[A-Za-z]{2,}$").expect("compile regex");
// taken from https://en.wikipedia.org/wiki/UTM_parameters
static ref CLEAN_URL_PARAMS_REGEX: Regex = Regex::new(r"^utm_source|utm_medium|utm_campaign|utm_term|utm_content|gclid|gclsrc|dclid|fbclid$").expect("compile regex");
}
pub fn naive_from_unix(time: i64) -> NaiveDateTime {
@ -148,3 +151,27 @@ pub fn get_ip(conn_info: &ConnectionInfo) -> IpAddr {
.to_string(),
)
}
pub fn clean_url_params(mut url: Url) -> Url {
let new_query = url
.query_pairs()
.filter(|q| !CLEAN_URL_PARAMS_REGEX.is_match(&q.0))
.map(|q| format!("{}={}", q.0, q.1))
.join("&");
url.set_query(Some(&new_query));
url
}
#[cfg(test)]
mod tests {
use crate::utils::clean_url_params;
use url::Url;
#[test]
fn test_clean_url_params() {
let url = Url::parse("https://example.com/path/123?utm_content=buffercf3b2&utm_medium=social&username=randomuser&id=123").unwrap();
let cleaned = clean_url_params(url);
let expected = Url::parse("https://example.com/path/123?username=randomuser&id=123").unwrap();
assert_eq!(expected.to_string(), cleaned.to_string());
}
}