feat: add note id size option

CHANGELOG.md

@@ -5,18 +5,22 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [2.3.0] - 2023-05-XX
+## [2.3.1] - 2023-05-XX
 
 ### Added
 
-- New CLI 🎉
-- Russian language
+- Option for reducing note id size (`ID_LENGTH`).
+
+## [2.3.0] - 2023-05-29
+
+### Added
+
+- New CLI 🎉.
+- Russian language.
 
 ### Changed
 
-- Moved to monorepo
-
-## [2.2.0] - 2023-01-14
+- Moved to monorepo.
 
 ### Changed
 

README.md

@@ -69,6 +69,7 @@ of the notes even if it tried to.
 | `MAX_VIEWS`        | `100`            | Maximal number of views.                                                                                                                                                                                      |
 | `MAX_EXPIRATION`   | `360`            | Maximal expiration in minutes.                                                                                                                                                                                |
 | `ALLOW_ADVANCED`   | `true`           | Allow custom configuration. If set to `false` all notes will be one view only.                                                                                                                                |
+| `ID_LENGTH`        | `32`             | Set the size of the note `id` in bytes. By default this is `32` bytes. This is useful for reducing link size. _This setting does not affect encryption strength_.                                             |
 | `VERBOSITY`        | `warn`           | Verbosity level for the backend. [Possible values](https://docs.rs/env_logger/latest/env_logger/#enabling-logging) are: `error`, `warn`, `info`, `debug`, `trace`                                             |
 | `THEME_IMAGE`      | `""`             | Custom image for replacing the logo. Must be publicly reachable                                                                                                                                               |
 | `THEME_TEXT`       | `""`             | Custom text for replacing the description below the logo                                                                                                                                                      |

packages/backend/src/config.rs

@@ -30,6 +30,10 @@ lazy_static! {
     .unwrap_or("true".to_string())
     .parse()
     .unwrap();
+  pub static ref ID_LENGTH: u32 = std::env::var("ID_LENGTH")
+    .unwrap_or("32".to_string())
+    .parse()
+    .unwrap();
 }
 
 // THEME

packages/backend/src/note/model.rs

@@ -2,6 +2,8 @@ use bs62;
 use ring::rand::SecureRandom;
 use serde::{Deserialize, Serialize};
 
+use crate::config;
+
 #[derive(Serialize, Deserialize, Clone)]
 pub struct Note {
     pub meta: String,
@@ -22,8 +24,13 @@ pub struct NotePublic {
 }
 
 pub fn generate_id() -> String {
-    let mut id: [u8; 32] = [0; 32];
+    let mut result = "".to_owned();
+    let mut id: [u8; 1] = [0; 1];
     let sr = ring::rand::SystemRandom::new();
-    let _ = sr.fill(&mut id);
-    return bs62::encode_data(&id);
+
+    for _ in 0..*config::ID_LENGTH {
+        let _ = sr.fill(&mut id);
+        result.push_str(&bs62::encode_data(&id));
+    }
+    return result;
 }