feat(paste): support using random file names

Cargo.lock

@@ -1177,6 +1177,7 @@ dependencies = [
  "futures-util",
  "log",
  "petname",
+ "rand 0.8.4",
  "serde 1.0.126",
 ]
 

Cargo.toml

@@ -15,6 +15,7 @@ serde = "1.0.126"
 futures-util = "0.3.15"
 config = "0.11.0"
 petname = "1.1.0"
+rand = "0.8.4"
 
 [dependencies.byte-unit]
 version = "4.0.12"

config.toml

@@ -7,4 +7,5 @@ upload_path="./upload"
 
 [paste]
 pet_names = true
+random = { enabled = false, length = 8 }
 default_extension = "txt"

src/config.rs

@@ -31,10 +31,21 @@ pub struct ServerConfig {
 pub struct PasteConfig {
     /// Use pet names instead of original file names.
     pub pet_names: bool,
+    /// Random string configuration.
+    pub random: RandomConfig,
     /// Default file extension.
     pub default_extension: String,
 }
 
+/// Random string configuration.
+#[derive(Debug, Clone, serde::Serialize, serde::Deserialize)]
+pub struct RandomConfig {
+    /// Use random strings instead of original file names.
+    pub enabled: bool,
+    /// Length of the random string to generate.
+    pub length: Option<usize>,
+}
+
 impl Config {
     /// Parses the config file and returns the values.
     pub fn parse(file_name: &str) -> Result<Config, ConfigError> {

src/file.rs

@@ -1,4 +1,5 @@
 use crate::config::Config;
+use rand::{distributions::Alphanumeric, Rng};
 use std::fs::File;
 use std::io::{Result as IoResult, Write};
 
@@ -7,9 +8,11 @@ use std::io::{Result as IoResult, Write};
 /// - If `file_name` does not have an extension, it is replaced with [`default_extension`].
 /// - If `file_name` is "-", it is replaced with "stdin".
 /// - If [`pet_names`] is `true`, `file_name` is replaced with a pet name.
+/// - If [`random.enabled`] is `true`, `file_name` is replaced with a random string.
 ///
 /// [`default_extension`]: crate::config::PasteConfig::default_extension
 /// [`pet_names`]: crate::config::PasteConfig::pet_names
+/// [`random.enabled`]: crate::config::RandomConfig::enabled
 pub fn save(mut file_name: &str, bytes: &[u8], config: &Config) -> IoResult<String> {
     if file_name == "-" {
         file_name = "stdin";
@@ -20,11 +23,28 @@ pub fn save(mut file_name: &str, bytes: &[u8], config: &Config) -> IoResult<Stri
             if config.paste.pet_names {
                 path.set_file_name(petname::petname(2, "-"));
                 path.set_extension(extension);
+            } else if config.paste.random.enabled {
+                path.set_file_name(
+                    rand::thread_rng()
+                        .sample_iter(&Alphanumeric)
+                        .take(config.paste.random.length.unwrap_or(8))
+                        .map(char::from)
+                        .collect::<String>(),
+                );
+                path.set_extension(extension);
             }
         }
         None => {
             if config.paste.pet_names {
                 path.set_file_name(petname::petname(2, "-"));
+            } else if config.paste.random.enabled {
+                path.set_file_name(
+                    rand::thread_rng()
+                        .sample_iter(&Alphanumeric)
+                        .take(config.paste.random.length.unwrap_or(8))
+                        .map(char::from)
+                        .collect::<String>(),
+                );
             }
             path.set_extension(&config.paste.default_extension);
         }