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Landing page for NSFW content, SFW-only mode (#656)

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Co-authored-by: Matt <matt@matthew.science>
Co-authored-by: Spike <19519553+spikecodes@users.noreply.github.com>
This commit is contained in:
Daniel Valentine 2023-01-03 02:39:45 -07:00 committed by GitHub
parent c15f305be0
commit c83a4e0cc8
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12 changed files with 227 additions and 13 deletions
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12
README.md
View file

@ -182,9 +182,17 @@ Once installed, deploy Libreddit to `0.0.0.0:8080` by running:
libreddit
```
## Change Default Settings
## Instance settings
Assign a default value for each setting by passing environment variables to Libreddit in the format `LIBREDDIT_DEFAULT_{X}`. Replace `{X}` with the setting name (see list below) in capital letters.
Assign a default value for each instance-specific setting by passing environment variables to Libreddit in the format `LIBREDDIT_{X}`. Replace `{X}` with the setting name (see list below) in capital letters.
|Name|Possible values|Default value|Description|
|-|-|-|-|
| `SFW_ONLY` | `["on", "off"]` | `off` | Enables SFW-only mode for the instance, i.e. all NSFW content is filtered. |
## Default User Settings
Assign a default value for each user-modifiable setting by passing environment variables to Libreddit in the format `LIBREDDIT_DEFAULT_{Y}`. Replace `{Y}` with the setting name (see list below) in capital letters.
| Name | Possible values | Default value |
|-------------------------|-----------------------------------------------------------------------------------------------------|---------------|

3
app.json
View file

@ -40,6 +40,9 @@
},
"LIBREDDIT_HIDE_HLS_NOTIFICATION": {
"required": false
},
"LIBREDDIT_SFW_ONLY": {
"required": false
}
}
}

12
src/duplicates.rs
View file

@ -3,7 +3,7 @@
use crate::client::json;
use crate::server::RequestExt;
use crate::subreddit::{can_access_quarantine, quarantine};
use crate::utils::{error, filter_posts, get_filters, parse_post, template, Post, Preferences};
use crate::utils::{error, filter_posts, get_filters, nsfw_landing, parse_post, setting, template, Post, Preferences};
use askama::Template;
use hyper::{Body, Request, Response};
@ -65,8 +65,16 @@ pub async fn item(req: Request<Body>) -> Result<Response<Body>, String> {
match json(path, quarantined).await {
// Process response JSON.
Ok(response) => {
let filters = get_filters(&req);
let post = parse_post(&response[0]["data"]["children"][0]).await;
// Return landing page if this post if this Reddit deems this post
// NSFW, but we have also disabled the display of NSFW content
// or if the instance is SFW-only.
if post.nsfw && (setting(&req, "show_nsfw") != "on" || crate::utils::sfw_only()) {
return Ok(nsfw_landing(req).await.unwrap_or_default());
}
let filters = get_filters(&req);
let (duplicates, num_posts_filtered, all_posts_filtered) = parse_duplicates(&response[1], &filters).await;
// These are the values for the "before=", "after=", and "sort="

10
src/post.rs
View file

@ -3,7 +3,7 @@ use crate::client::json;
use crate::server::RequestExt;
use crate::subreddit::{can_access_quarantine, quarantine};
use crate::utils::{
error, format_num, get_filters, param, parse_post, rewrite_urls, setting, template, time, val, Author, Awards, Comment, Flair, FlairPart, Post, Preferences,
error, format_num, get_filters, nsfw_landing, param, parse_post, rewrite_urls, setting, template, time, val, Author, Awards, Comment, Flair, FlairPart, Post, Preferences,
};
use hyper::{Body, Request, Response};
@ -55,6 +55,14 @@ pub async fn item(req: Request<Body>) -> Result<Response<Body>, String> {
Ok(response) => {
// Parse the JSON into Post and Comment structs
let post = parse_post(&response[0]["data"]["children"][0]).await;
// Return landing page if this post if this Reddit deems this post
// NSFW, but we have also disabled the display of NSFW content
// or if the instance is SFW-only.
if post.nsfw && (setting(&req, "show_nsfw") != "on" || crate::utils::sfw_only()) {
return Ok(nsfw_landing(req).await.unwrap_or_default());
}
let comments = parse_comments(&response[1], &post.permalink, &post.author.name, highlighted_comment, &get_filters(&req));
let url = req.uri().to_string();

9
src/search.rs
View file

@ -1,5 +1,5 @@
// CRATES
use crate::utils::{catch_random, error, filter_posts, format_num, format_url, get_filters, param, redirect, setting, template, val, Post, Preferences};
use crate::utils::{self, catch_random, error, filter_posts, format_num, format_url, get_filters, param, redirect, setting, template, val, Post, Preferences};
use crate::{
client::json,
subreddit::{can_access_quarantine, quarantine},
@ -54,7 +54,12 @@ static REDDIT_URL_MATCH: Lazy<Regex> = Lazy::new(|| Regex::new(r"^https?://([^\.
// SERVICES
pub async fn find(req: Request<Body>) -> Result<Response<Body>, String> {
let nsfw_results = if setting(&req, "show_nsfw") == "on" { "&include_over_18=on" } else { "" };
// This ensures that during a search, no NSFW posts are fetched at all
let nsfw_results = if setting(&req, "show_nsfw") == "on" && !utils::sfw_only() {
"&include_over_18=on"
} else {
""
};
let path = format!("{}.json?{}{}&raw_json=1", req.uri().path(), req.uri().query().unwrap_or_default(), nsfw_results);
let mut query = param(&path, "q").unwrap_or_default();
query = REDDIT_URL_MATCH.replace(&query, "").to_string();

9
src/subreddit.rs
View file

@ -1,6 +1,6 @@
// CRATES
use crate::utils::{
catch_random, error, filter_posts, format_num, format_url, get_filters, param, redirect, rewrite_urls, setting, template, val, Post, Preferences, Subreddit,
catch_random, error, filter_posts, format_num, format_url, get_filters, nsfw_landing, param, redirect, rewrite_urls, setting, template, val, Post, Preferences, Subreddit,
};
use crate::{client::json, server::ResponseExt, RequestExt};
use askama::Template;
@ -97,6 +97,12 @@ pub async fn community(req: Request<Body>) -> Result<Response<Body>, String> {
}
};
// Return landing page if this post if this is NSFW community but the user
// has disabled the display of NSFW content or if the instance is SFW-only.
if sub.nsfw && (setting(&req, "show_nsfw") != "on" || crate::utils::sfw_only()) {
return Ok(nsfw_landing(req).await.unwrap_or_default());
}
let path = format!("/r/{}/{}.json?{}&raw_json=1", sub_name.clone(), sort, req.uri().query().unwrap_or_default());
let url = String::from(req.uri().path_and_query().map_or("", |val| val.as_str()));
let redirect_url = url[1..].replace('?', "%3F").replace('&', "%26").replace('+', "%2B");
@ -424,5 +430,6 @@ async fn subreddit(sub: &str, quarantined: bool) -> Result<Subreddit, String> {
members: format_num(members),
active: format_num(active),
wiki: res["data"]["wiki_enabled"].as_bool().unwrap_or_default(),
nsfw: res["data"]["over18"].as_bool().unwrap_or_default(),
})
}

12
src/user.rs
View file

@ -1,7 +1,7 @@
// CRATES
use crate::client::json;
use crate::server::RequestExt;
use crate::utils::{error, filter_posts, format_url, get_filters, param, setting, template, Post, Preferences, User};
use crate::utils::{error, filter_posts, format_url, get_filters, nsfw_landing, param, setting, template, Post, Preferences, User};
use askama::Template;
use hyper::{Body, Request, Response};
use time::{macros::format_description, OffsetDateTime};
@ -46,8 +46,17 @@ pub async fn profile(req: Request<Body>) -> Result<Response<Body>, String> {
// Retrieve other variables from Libreddit request
let sort = param(&path, "sort").unwrap_or_default();
let username = req.param("name").unwrap_or_default();
// Retrieve info from user about page.
let user = user(&username).await.unwrap_or_default();
// Return landing page if this post if this Reddit deems this user NSFW,
// but we have also disabled the display of NSFW content or if the instance
// is SFW-only.
if user.nsfw && (setting(&req, "show_nsfw") != "on" || crate::utils::sfw_only()) {
return Ok(nsfw_landing(req).await.unwrap_or_default());
}
let filters = get_filters(&req);
if filters.contains(&["u_", &username].concat()) {
template(UserTemplate {
@ -115,6 +124,7 @@ async fn user(name: &str) -> Result<User, String> {
created: created.format(format_description!("[month repr:short] [day] '[year repr:last_two]")).unwrap_or_default(),
banner: about("banner_img"),
description: about("public_description"),
nsfw: res["data"]["subreddit"]["over_18"].as_bool().unwrap_or_default(),
}
})
}

82
src/utils.rs
View file

@ -9,6 +9,7 @@ use regex::Regex;
use rust_embed::RustEmbed;
use serde_json::Value;
use std::collections::{HashMap, HashSet};
use std::env;
use std::str::FromStr;
use time::{macros::format_description, Duration, OffsetDateTime};
use url::Url;
@ -28,6 +29,16 @@ macro_rules! dbg_msg {
};
}
/// Identifies whether or not the page is a subreddit, a user page, or a post.
/// This is used by the NSFW landing template to determine the mesage to convey
/// to the user.
#[derive(PartialEq, Eq)]
pub enum ResourceType {
Subreddit,
User,
Post,
}
// Post flair with content, background color and foreground color
pub struct Flair {
pub flair_parts: Vec<FlairPart>,
@ -229,6 +240,7 @@ pub struct Post {
pub comments: (String, String),
pub gallery: Vec<GalleryMedia>,
pub awards: Awards,
pub nsfw: bool,
}
impl Post {
@ -329,6 +341,7 @@ impl Post {
comments: format_num(data["num_comments"].as_i64().unwrap_or_default()),
gallery,
awards,
nsfw: post["data"]["over_18"].as_bool().unwrap_or_default(),
});
}
@ -420,6 +433,27 @@ pub struct ErrorTemplate {
pub url: String,
}
/// Template for NSFW landing page. The landing page is displayed when a page's
/// content is wholly NSFW, but a user has not enabled the option to view NSFW
/// posts.
#[derive(Template)]
#[template(path = "nsfwlanding.html")]
pub struct NSFWLandingTemplate {
/// Identifier for the resource. This is either a subreddit name or a
/// username. (In the case of the latter, set is_user to true.)
pub res: String,
/// Identifies whether or not the resource is a subreddit, a user page,
/// or a post.
pub res_type: ResourceType,
/// User preferences.
pub prefs: Preferences,
/// Request URL.
pub url: String,
}
#[derive(Default)]
// User struct containing metadata about user
pub struct User {
@ -430,6 +464,7 @@ pub struct User {
pub created: String,
pub banner: String,
pub description: String,
pub nsfw: bool,
}
#[derive(Default)]
@ -444,6 +479,7 @@ pub struct Subreddit {
pub members: (String, String),
pub active: (String, String),
pub wiki: bool,
pub nsfw: bool,
}
// Parser for query params, used in sorting (eg. /r/rust/?sort=hot)
@ -617,6 +653,7 @@ pub async fn parse_post(post: &serde_json::Value) -> Post {
comments: format_num(post["data"]["num_comments"].as_i64().unwrap_or_default()),
gallery,
awards,
nsfw: post["data"]["over_18"].as_bool().unwrap_or_default(),
}
}
@ -829,6 +866,51 @@ pub async fn error(req: Request<Body>, msg: impl ToString) -> Result<Response<Bo
Ok(Response::builder().status(404).header("content-type", "text/html").body(body.into()).unwrap_or_default())
}
/// Returns true if the environment variable `LIBREDDIT_SFW_ONLY` carries the
/// value `on`.
///
/// If this variable is set as such, the instance will operate in SFW-only
/// mode; all NSFW content will be filtered. Attempts to access NSFW
/// subreddits or posts or userpages for users Reddit has deemed NSFW will
/// be denied.
pub fn sfw_only() -> bool {
match env::var("LIBREDDIT_SFW_ONLY") {
Ok(val) => val == "on",
Err(_) => false,
}
}
/// Renders the landing page for NSFW content when the user has not enabled
/// "show NSFW posts" in settings.
pub async fn nsfw_landing(req: Request<Body>) -> Result<Response<Body>, String> {
let res_type: ResourceType;
let url = req.uri().to_string();
// Determine from the request URL if the resource is a subreddit, a user
// page, or a post.
let res: String = if !req.param("name").unwrap_or_default().is_empty() {
res_type = ResourceType::User;
req.param("name").unwrap_or_default()
} else if !req.param("id").unwrap_or_default().is_empty() {
res_type = ResourceType::Post;
req.param("id").unwrap_or_default()
} else {
res_type = ResourceType::Subreddit;
req.param("sub").unwrap_or_default()
};
let body = NSFWLandingTemplate {
res,
res_type,
prefs: Preferences::new(req),
url,
}
.render()
.unwrap_or_default();
Ok(Response::builder().status(403).header("content-type", "text/html").body(body.into()).unwrap_or_default())
}
#[cfg(test)]
mod tests {
use super::{format_num, format_url, rewrite_urls};

52
static/style.css
View file

@ -160,16 +160,35 @@ main {
overflow: inherit;
}
footer {
/* Body footer. */
body > footer {
display: flex;
justify-content: center;
margin: 20px;
}
body > footer > div#sfw-only {
color: var(--green);
border: 1px solid var(--green);
padding: 5px;
box-sizing: border-box;
border-radius: 5px;
}
/* / Body footer. */
/* Footer in content block. */
main > * > footer {
display: flex;
justify-content: center;
margin-top: 20px;
}
footer > a {
main > * > footer > a {
margin-right: 5px;
}
/* / Footer in content block. */
button {
background: none;
border: none;
@ -485,7 +504,7 @@ button.submit:hover > svg { stroke: var(--accent); }
overflow-x: auto;
}
#sort_options, #listing_options, footer > a {
#sort_options, #listing_options, main > * > footer > a {
border-radius: 5px;
align-items: center;
box-shadow: var(--shadow);
@ -494,7 +513,7 @@ button.submit:hover > svg { stroke: var(--accent); }
overflow: hidden;
}
#sort_options > a, #listing_options > a, footer > a {
#sort_options > a, #listing_options > a, main > * > footer > a {
color: var(--text);
padding: 10px 20px;
text-align: center;
@ -1315,6 +1334,31 @@ td, th {
color: var(--accent);
}
/* NSFW Landing Page */
#nsfw_landing {
display: inline-block;
text-align: center;
width: 100%;
}
#nsfw_landing h1 {
display: inline-block;
margin-bottom: 20px;
text-align: center;
width: 100%;
}
#nsfw_landing p {
display: inline-block;
text-align: center;
width: 100%;
}
#nsfw_landing a {
color: var(--accent);
}
/* Mobile */
@media screen and (max-width: 800px) {

5
templates/base.html
View file

@ -65,5 +65,10 @@
{% endblock %}
</main>
{% endblock %}
{% block footer %}
{% if crate::utils::sfw_only() %}
<footer><div id="sfw-only">This instance of Libreddit is SFW-only.</div></footer>
{% endif %}
{% endblock %}
</body>
</html>

28
templates/nsfwlanding.html Normal file
View file

@ -0,0 +1,28 @@
{% extends "base.html" %}
{% block title %}NSFW content gated{% endblock %}
{% block sortstyle %}{% endblock %}
{% block content %}
<div id="nsfw_landing">
<h1>
&#128561;
{% if res_type == crate::utils::ResourceType::Subreddit %}
r/{{ res }} is a NSFW community!
{% else if res_type == crate::utils::ResourceType::User %}
u/{{ res }}'s content is NSFW!
{% else if res_type == crate::utils::ResourceType::Post %}
This post is NSFW!
{% endif %}
</h1>
<br />
<p>
{% if crate::utils::sfw_only() %}
This instance of Libreddit is SFW-only.</p>
{% else %}
Enable "Show NSFW posts" in <a href="/settings">settings</a> to view this {% if res_type == crate::utils::ResourceType::Subreddit %}subreddit{% else if res_type == crate::utils::ResourceType::User %}user's posts or comments{% else if res_type == crate::utils::ResourceType::Post %}post{% endif %}.
{% endif %}
</p>
</div>
{% endblock %}
{% block footer %}
{% endblock %}

6
templates/settings.html
View file

@ -54,6 +54,7 @@
{% call utils::options(prefs.comment_sort, ["confidence", "top", "new", "controversial", "old"], "confidence") %}
</select>
</div>
{% if !crate::utils::sfw_only() %}
<div class="prefs-group">
<label for="show_nsfw">Show NSFW posts:</label>
<input type="hidden" value="off" name="show_nsfw">
@ -64,6 +65,7 @@
<input type="hidden" value="off" name="blur_nsfw">
<input type="checkbox" name="blur_nsfw" id="blur_nsfw" {% if prefs.blur_nsfw == "on" %}checked{% endif %}>
</div>
{% endif %}
<div class="prefs-group">
<label for="autoplay_videos">Autoplay videos</label>
<input type="hidden" value="off" name="autoplay_videos">
@ -121,6 +123,10 @@
<div id="settings_note">
<p><b>Note:</b> settings and subscriptions are saved in browser cookies. Clearing your cookies will reset them.</p><br>
<p>You can restore your current settings and subscriptions after clearing your cookies using <a href="/settings/restore/?theme={{ prefs.theme }}&front_page={{ prefs.front_page }}&layout={{ prefs.layout }}&wide={{ prefs.wide }}&post_sort={{ prefs.post_sort }}&comment_sort={{ prefs.comment_sort }}&show_nsfw={{ prefs.show_nsfw }}&blur_nsfw={{ prefs.blur_nsfw }}&use_hls={{ prefs.use_hls }}&hide_hls_notification={{ prefs.hide_hls_notification }}&subscriptions={{ prefs.subscriptions.join("%2B") }}&filters={{ prefs.filters.join("%2B") }}">this link</a>.</p>
<br />
{% if crate::utils::sfw_only() %}
<p>This instance is SFW-only. It will block all NSFW content.</p>
{% endif %}
</div>
</div>