Merge branch 'rolling' into bing-search-engine

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+updates:
+  - package-ecosystem: "cargo"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "monthly"
+  - package-ecosystem: "docker"
+    directory: "/"
+    schedule:
+      interval: "monthly"

.github/workflows/contributors.yml

@@ -17,13 +17,13 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0
+        uses: actions/checkout@8ade135a41bc03ea155e62e844d188df1ea18608 # v4.1.0
         with:
           fetch-depth: 0
           ref: ${{ github.event.repository.default_branch }}
           
       - name: Update contributors list
-        uses: wow-actions/contributors-list@b9e91f91a51a55460fdcae64daad0cb8122cdd53 # v1.1.0
+        uses: wow-actions/contributors-list@242b53835016268d20e79eeff6f42193c02be8c8 # v1.2.0
         with:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
           svgPath: images/contributors_list.svg

.github/workflows/labels.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/setup-node@v2
+    - uses: actions/setup-node@v3
       with:
         node-version: '14'
     - uses: EddieHubCommunity/gh-action-open-source-labels@main

.github/workflows/mega-linter.yml

@@ -32,7 +32,7 @@ jobs:
     steps:
       # Git Checkout
       - name: Checkout Code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           token: ${{ secrets.PAT || secrets.GITHUB_TOKEN }}
 

.github/workflows/rust.yml

@@ -25,7 +25,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends liblua5.4-dev liblua5.3-dev liblua5.2-dev liblua5.1-0-dev libluajit-5.1-dev
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: rustup toolchain install stable --profile minimal
       - uses: Swatinem/rust-cache@v2
         with:
@@ -39,7 +39,7 @@ jobs:
           cache-on-failure: ''
           cache-all-crates: ''
           save-if: ''
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
       - name: Build
         run: cargo build --verbose

.github/workflows/rust_format.yml

@@ -17,7 +17,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y --no-install-recommends liblua5.4-dev liblua5.3-dev liblua5.2-dev liblua5.1-0-dev libluajit-5.1-dev
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
       - name: Install minimal stable with clippy and rustfmt
         uses: actions-rs/toolchain@v1
         with:

.github/workflows/stale.yml

@@ -19,7 +19,7 @@ jobs:
       pull-requests: write
 
     steps:
-    - uses: actions/stale@v5
+    - uses: actions/stale@v8
       with:
         repo-token: ${{ secrets.GITHUB_TOKEN }}
         stale-issue-message: 'Stale issue message'

.mergify.yml

@@ -0,0 +1,18 @@
+pull_request_rules:
+  - name: Automatic merge on approval
+    conditions:
+      - "status-success=checks/approved"
+      - "#approved-reviews-by>=2"
+    actions:
+      queue:
+        method: squash
+  - name: automatic update of pull requests where more 5 commits behind
+    conditions:
+      - "#commits-behind>5"
+    actions:
+      update:
+  - name: delete head branch after merge
+    conditions:
+      - merged
+    actions:
+      delete_head_branch: {}

Cargo.lock

@@ -433,11 +433,12 @@ dependencies = [
 
 [[package]]
 name = "bstr"
-version = "0.2.17"
+version = "1.6.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba3569f383e8f1598449f1a423e72e99569137b47740b1da11ef19af3d5c3223"
+checksum = "4c2f7349907b712260e64b0afe2f84692af14a454be26187d9df565c7f69266a"
 dependencies = [
  "memchr",
+ "serde",
 ]
 
 [[package]]
@@ -448,9 +449,9 @@ checksum = "7f30e7476521f6f8af1a1c4c0b8cc94f0bee37d91763d0ca2665f299b6cd8aec"
 
 [[package]]
 name = "bytecount"
-version = "0.6.3"
+version = "0.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "2c676a478f63e9fa2dd5368a42f28bba0d6c560b775f38583c8bbaa7fcd67c9c"
+checksum = "ad152d03a2c813c80bb94fedbf3a3f02b28f793e39e7c214c8a0bcc196343de7"
 
 [[package]]
 name = "byteorder"
@@ -991,9 +992,9 @@ dependencies = [
 
 [[package]]
 name = "errno"
-version = "0.3.3"
+version = "0.3.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "136526188508e25c6fef639d7927dfb3e0e3084488bf202267829cf7fc23dbdd"
+checksum = "add4f07d43996f76ef320709726a556a9d4f965d9410d8d0271132d2f8293480"
 dependencies = [
  "errno-dragonfly",
  "libc",
@@ -1866,9 +1867,9 @@ checksum = "490cc448043f947bae3cbee9c203358d62dbee0db12107a74be5c30ccfd09771"
 
 [[package]]
 name = "memchr"
-version = "2.6.3"
+version = "2.6.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8f232d6ef707e1956a43342693d2a31e72989554d58299d7a88738cc95b0d35c"
+checksum = "f665ee40bc4a3c5590afb1e9677db74a508659dfd71e126420da8274909a0167"
 
 [[package]]
 name = "memoffset"
@@ -1992,20 +1993,30 @@ dependencies = [
 
 [[package]]
 name = "mlua"
-version = "0.8.10"
+version = "0.9.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0bb37b0ba91f017aa7ca2b98ef99496827770cd635b4a932a6047c5b4bbe678e"
+checksum = "6c3a7a7ff4481ec91b951a733390211a8ace1caba57266ccb5f4d4966704e560"
 dependencies = [
  "bstr",
- "cc",
+ "mlua-sys",
- "lua-src",
- "luajit-src",
  "num-traits",
  "once_cell",
- "pkg-config",
  "rustc-hash",
 ]
 
+[[package]]
+name = "mlua-sys"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3ec8b54eddb76093069cce9eeffb4c7b3a1a0fe66962d7bd44c4867928149ca3"
+dependencies = [
+ "cc",
+ "cfg-if 1.0.0",
+ "lua-src",
+ "luajit-src",
+ "pkg-config",
+]
+
 [[package]]
 name = "native-tls"
 version = "0.2.11"
@@ -2802,9 +2813,9 @@ dependencies = [
 
 [[package]]
 name = "reqwest"
-version = "0.11.20"
+version = "0.11.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3e9ad3fe7488d7e34558a2033d45a0c90b72d97b4f80705666fea71472e2e6a1"
+checksum = "046cd98826c46c2ac8ddecae268eb5c2e58628688a5fc7a2643704a73faba95b"
 dependencies = [
  "base64 0.21.4",
  "bytes 1.5.0",
@@ -2827,6 +2838,7 @@ dependencies = [
  "serde",
  "serde_json",
  "serde_urlencoded 0.7.1",
+ "system-configuration",
  "tokio 1.32.0",
  "tokio-native-tls",
  "tower-service",
@@ -3320,6 +3332,27 @@ dependencies = [
  "libc",
 ]
 
+[[package]]
+name = "system-configuration"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ba3a3adc5c275d719af8cb4272ea1c4a6d668a777f37e115f6d11ddbc1c8e0e7"
+dependencies = [
+ "bitflags 1.3.2",
+ "core-foundation",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.5.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a75fb188eb626b924683e3b95e3a48e63551fcfb51949de2f06a9d91dbee93c9"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tagptr"
 version = "0.2.0"
@@ -3932,7 +3965,7 @@ dependencies = [
 
 [[package]]
 name = "websurfx"
-version = "1.0.0"
+version = "1.0.11"
 dependencies = [
  "actix-cors",
  "actix-files",
@@ -3956,7 +3989,7 @@ dependencies = [
  "rand 0.8.5",
  "redis",
  "regex",
- "reqwest 0.11.20",
+ "reqwest 0.11.22",
  "rusty-hook",
  "scraper",
  "serde",

Cargo.toml

@@ -1,13 +1,13 @@
 [package]
 name = "websurfx"
-version = "1.0.0"
+version = "1.0.11"
 edition = "2021"
 description = "An open-source alternative to Searx that provides clean, ad-free, and organic results with incredible speed while keeping privacy and security in mind."
 repository = "https://github.com/neon-mmd/websurfx"
 license = "AGPL-3.0"
 
 [dependencies]
-reqwest = {version="0.11.20",features=["json"]}
+reqwest = {version="0.11.21",features=["json"]}
 tokio = {version="1.32.0",features=["rt-multi-thread","macros"]}
 serde = {version="1.0.188",features=["derive"]}
 handlebars = { version = "4.4.0", features = ["dir_source"] }
@@ -19,7 +19,7 @@ serde_json = {version="1.0.105"}
 fake-useragent = {version="0.1.3"}
 env_logger = {version="0.10.0"}
 log = {version="0.4.20"}
-mlua = {version="0.8.10", features=["luajit", "vendored"]}
+mlua = {version="0.9.1", features=["luajit", "vendored"]}
 redis = {version="0.23.3", features=["tokio-comp","connection-manager"], optional = true}
 md5 = {version="0.7.0"}
 rand={version="0.8.5"}

README.md

@@ -35,6 +35,12 @@
       src="https://img.shields.io/maintenance/yes/2023?style=flat-square"
     />
   </a>
+  <a href="https://www.codefactor.io/repository/github/neon-mmd/websurfx">
+    <img
+      alt="CodeFactor"
+      src="https://www.codefactor.io/repository/github/neon-mmd/websurfx/badge"
+    />
+  </a>
   <a href="https://gitpod.io/#https://github.com/neon-mmd/websurfx">
     <img
       alt="Gitpod"
@@ -106,6 +112,9 @@
 # Features 🚀
 
 - 🎨 Make Websurfx uniquely yours with twelve color schemes provided by default. It also supports creation of custom themes and color schemes in a quick and easy way, so unleash your creativity!
+- 🚀 Easy to setup with docker or on bare metal with various installation/deployement options. 
+- ⛔ Search filtering to filter search results based on four different levels.
+- 💾 Different caching levels focusing on reliability, speed and resiliancy.
 - 🔐 Fast, private, and secure
 - 🆓 100% free and open source
 - 💨 Ad-free and clean results

docker-compose.yml

@@ -16,5 +16,3 @@ services:
   # Uncomment the following lines if you are using the `hybrid` or `redis` caching feature.
   # redis:
   #   image: redis:latest
-  #   ports:
-  #     - 6379:6379

docs/installation.md

@@ -217,8 +217,6 @@ services:
   # Uncomment the following lines if you are using the `hybrid/latest` or `redis` image.
   # redis:
   #   image: redis:latest
-  #   ports:
-  #     - 6379:6379
 ```
 
 Then make sure to edit the `docker-compose.yml` file as required. After that create a directory `websurfx` in the directory you have placed the `docker-compose.yml` file, and then in the new directory create two new empty files named `allowlist.txt` and `blocklist.txt`. Finally, create a new config file `config.lua` with the default configuration, which looks something like this:

src/config/parser.rs

@@ -3,6 +3,7 @@
 
 use crate::handler::paths::{file_path, FileType};
 
+use crate::models::engine_models::{EngineError, EngineHandler};
 use crate::models::parser_models::{AggregatorConfig, RateLimiter, Style};
 use log::LevelFilter;
 use mlua::Lua;
@@ -28,7 +29,7 @@ pub struct Config {
     /// It stores the option to whether enable or disable debug mode.
     pub debug: bool,
     /// It stores all the engine names that were enabled by the user.
-    pub upstream_search_engines: Vec<crate::models::engine_models::EngineHandler>,
+    pub upstream_search_engines: Vec<EngineHandler>,
     /// It stores the time (secs) which controls the server request timeout.
     pub request_timeout: u8,
     /// It stores the number of threads which controls the app will use to run.
@@ -111,8 +112,8 @@ impl Config {
                 .get::<_, HashMap<String, bool>>("upstream_search_engines")?
                 .into_iter()
                 .filter_map(|(key, value)| value.then_some(key))
-                .filter_map(|engine| crate::models::engine_models::EngineHandler::new(&engine))
+                .map(|engine| EngineHandler::new(&engine))
-                .collect(),
+                .collect::<Result<Vec<EngineHandler>, error_stack::Report<EngineError>>>()?,
             request_timeout: globals.get::<_, u8>("request_timeout")?,
             threads,
             rate_limiter: RateLimiter {

src/engines/duckduckgo.rs

@@ -5,7 +5,7 @@
 use std::collections::HashMap;
 
 use reqwest::header::HeaderMap;
-use scraper::{Html, Selector};
+use scraper::Html;
 
 use crate::models::aggregation_models::SearchResult;
 
@@ -13,9 +13,29 @@ use crate::models::engine_models::{EngineError, SearchEngine};
 
 use error_stack::{Report, Result, ResultExt};
 
+use super::search_result_parser::SearchResultParser;
+
 /// A new DuckDuckGo engine type defined in-order to implement the `SearchEngine` trait which allows to
 /// reduce code duplication as well as allows to create vector of different search engines easily.
-pub struct DuckDuckGo;
+pub struct DuckDuckGo {
+    /// The parser, used to interpret the search result.
+    parser: SearchResultParser,
+}
+
+impl DuckDuckGo {
+    /// Creates the DuckDuckGo parser.
+    pub fn new() -> Result<Self, EngineError> {
+        Ok(Self {
+            parser: SearchResultParser::new(
+                ".no-results",
+                ".result",
+                ".result__a",
+                ".result__url",
+                ".result__snippet",
+            )?,
+        })
+    }
+}
 
 #[async_trait::async_trait]
 impl SearchEngine for DuckDuckGo {
@@ -59,58 +79,19 @@ impl SearchEngine for DuckDuckGo {
             &DuckDuckGo::fetch_html_from_upstream(self, &url, header_map, request_timeout).await?,
         );
 
-        let no_result: Selector = Selector::parse(".no-results")
+        if self.parser.parse_for_no_results(&document).next().is_some() {
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".no-results"))?;
-
-        if document.select(&no_result).next().is_some() {
             return Err(Report::new(EngineError::EmptyResultSet));
         }
 
-        let results: Selector = Selector::parse(".result")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".result"))?;
-        let result_title: Selector = Selector::parse(".result__a")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".result__a"))?;
-        let result_url: Selector = Selector::parse(".result__url")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".result__url"))?;
-        let result_desc: Selector = Selector::parse(".result__snippet")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".result__snippet"))?;
-
         // scrape all the results from the html
-        Ok(document
+        self.parser
-            .select(&results)
+            .parse_for_results(&document, |title, url, desc| {
-            .map(|result| {
+                Some(SearchResult::new(
-                SearchResult::new(
+                    title.inner_html().trim(),
-                    result
+                    &format!("https://{}", url.inner_html().trim()),
-                        .select(&result_title)
+                    desc.inner_html().trim(),
-                        .next()
-                        .unwrap()
-                        .inner_html()
-                        .trim(),
-                    format!(
-                        "https://{}",
-                        result
-                            .select(&result_url)
-                            .next()
-                            .unwrap()
-                            .inner_html()
-                            .trim()
-                    )
-                    .as_str(),
-                    result
-                        .select(&result_desc)
-                        .next()
-                        .unwrap()
-                        .inner_html()
-                        .trim(),
                     &["duckduckgo"],
-                )
+                ))
             })
-            .map(|search_result| (search_result.url.clone(), search_result))
-            .collect())
     }
 }

src/engines/mod.rs

@@ -4,4 +4,5 @@
 //! code. Moreover, it also provides a custom error for the upstream search engine handling code.
 
 pub mod duckduckgo;
+pub mod search_result_parser;
 pub mod searx;

src/engines/search_result_parser.rs

@@ -0,0 +1,76 @@
+//! This modules provides helper functionalities for parsing a html document into internal SearchResult.
+use std::collections::HashMap;
+
+use crate::models::{aggregation_models::SearchResult, engine_models::EngineError};
+use error_stack::{Report, Result};
+use scraper::{html::Select, ElementRef, Html, Selector};
+
+/// A html search result parser, based on a predefined CSS selectors.
+pub struct SearchResultParser {
+    /// selector to locate the element which is displayed, if there were nothing found.
+    no_result: Selector,
+    /// selector to locate the element which contains one item from the search result.
+    results: Selector,
+    /// selector to locate the title relative to the search result item.
+    result_title: Selector,
+    /// selector to locate the url relative to the search result item.
+    result_url: Selector,
+    /// selector to locate the description relative to the search result item.
+    result_desc: Selector,
+}
+
+impl SearchResultParser {
+    /// Creates a new parser, if all the selectors are valid, otherwise it returns an EngineError
+    pub fn new(
+        no_result_selector: &str,
+        results_selector: &str,
+        result_title_selector: &str,
+        result_url_selector: &str,
+        result_desc_selector: &str,
+    ) -> Result<SearchResultParser, EngineError> {
+        Ok(SearchResultParser {
+            no_result: new_selector(no_result_selector)?,
+            results: new_selector(results_selector)?,
+            result_title: new_selector(result_title_selector)?,
+            result_url: new_selector(result_url_selector)?,
+            result_desc: new_selector(result_desc_selector)?,
+        })
+    }
+
+    /// Parse the html and returns element representing the 'no result found' response.
+    pub fn parse_for_no_results<'a>(&'a self, document: &'a Html) -> Select<'a, 'a> {
+        document.select(&self.no_result)
+    }
+
+    /// Parse the html, and convert the results to SearchResult with the help of the builder function
+    pub fn parse_for_results(
+        &self,
+        document: &Html,
+        builder: impl Fn(&ElementRef<'_>, &ElementRef<'_>, &ElementRef<'_>) -> Option<SearchResult>,
+    ) -> Result<HashMap<String, SearchResult>, EngineError> {
+        let res = document
+            .select(&self.results)
+            .filter_map(|result| {
+                let title = result.select(&self.result_title).next();
+                let url = result.select(&self.result_url).next();
+                let desc = result.select(&self.result_desc).next();
+                match (title, url, desc) {
+                    (Some(ref t), Some(ref u), Some(ref d)) => builder(t, u, d),
+                    _ => None,
+                }
+            })
+            .map(|search_result| (search_result.url.clone(), search_result))
+            .collect();
+        Ok(res)
+    }
+}
+
+/// Create a Selector struct, if the given parameter is a valid css expression, otherwise convert it into an EngineError.
+fn new_selector(selector: &str) -> Result<Selector, EngineError> {
+    Selector::parse(selector).map_err(|err| {
+        Report::new(EngineError::UnexpectedError).attach_printable(format!(
+            "invalid CSS selector: {}, err: {:?}",
+            selector, err
+        ))
+    })
+}

src/engines/searx.rs

@@ -3,16 +3,35 @@
 //! number if provided.
 
 use reqwest::header::HeaderMap;
-use scraper::{Html, Selector};
+use scraper::Html;
 use std::collections::HashMap;
 
+use super::search_result_parser::SearchResultParser;
 use crate::models::aggregation_models::SearchResult;
 use crate::models::engine_models::{EngineError, SearchEngine};
 use error_stack::{Report, Result, ResultExt};
 
 /// A new Searx engine type defined in-order to implement the `SearchEngine` trait which allows to
 /// reduce code duplication as well as allows to create vector of different search engines easily.
-pub struct Searx;
+pub struct Searx {
+    /// The parser, used to interpret the search result.
+    parser: SearchResultParser,
+}
+
+impl Searx {
+    /// creates a Searx parser
+    pub fn new() -> Result<Searx, EngineError> {
+        Ok(Self {
+            parser: SearchResultParser::new(
+                "#urls>.dialog-error>p",
+                ".result",
+                "h3>a",
+                "h3>a",
+                ".content",
+            )?,
+        })
+    }
+}
 
 #[async_trait::async_trait]
 impl SearchEngine for Searx {
@@ -52,13 +71,7 @@ impl SearchEngine for Searx {
             &Searx::fetch_html_from_upstream(self, &url, header_map, request_timeout).await?,
         );
 
-        let no_result: Selector = Selector::parse("#urls>.dialog-error>p")
+        if let Some(no_result_msg) = self.parser.parse_for_no_results(&document).nth(1) {
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| {
-                format!("invalid CSS selector: {}", "#urls>.dialog-error>p")
-            })?;
-
-        if let Some(no_result_msg) = document.select(&no_result).nth(1) {
             if no_result_msg.inner_html()
             == "we didn't find any results. Please use another query or search in more categories"
         {
@@ -66,48 +79,17 @@ impl SearchEngine for Searx {
         }
         }
 
-        let results: Selector = Selector::parse(".result")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".result"))?;
-        let result_title: Selector = Selector::parse("h3>a")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", "h3>a"))?;
-        let result_url: Selector = Selector::parse("h3>a")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", "h3>a"))?;
-
-        let result_desc: Selector = Selector::parse(".content")
-            .map_err(|_| Report::new(EngineError::UnexpectedError))
-            .attach_printable_lazy(|| format!("invalid CSS selector: {}", ".content"))?;
-
         // scrape all the results from the html
-        Ok(document
+        self.parser
-            .select(&results)
+            .parse_for_results(&document, |title, url, desc| {
-            .map(|result| {
+                url.value().attr("href").map(|url| {
-                SearchResult::new(
+                    SearchResult::new(
-                    result
+                        title.inner_html().trim(),
-                        .select(&result_title)
+                        url,
-                        .next()
+                        desc.inner_html().trim(),
-                        .unwrap()
+                        &["searx"],
-                        .inner_html()
+                    )
-                        .trim(),
+                })
-                    result
-                        .select(&result_url)
-                        .next()
-                        .unwrap()
-                        .value()
-                        .attr("href")
-                        .unwrap(),
-                    result
-                        .select(&result_desc)
-                        .next()
-                        .unwrap()
-                        .inner_html()
-                        .trim(),
-                    &["searx"],
-                )
             })
-            .map(|search_result| (search_result.url.clone(), search_result))
-            .collect())
     }
 }

src/models/aggregation_models.rs

@@ -85,12 +85,14 @@ impl EngineErrorInfo {
     pub fn new(error: &EngineError, engine: &str) -> Self {
         Self {
             error: match error {
+                EngineError::NoSuchEngineFound(_) => "EngineNotFound".to_owned(),
                 EngineError::RequestError => "RequestError".to_owned(),
                 EngineError::EmptyResultSet => "EmptyResultSet".to_owned(),
                 EngineError::UnexpectedError => "UnexpectedError".to_owned(),
             },
             engine: engine.to_owned(),
             severity_color: match error {
+                EngineError::NoSuchEngineFound(_) => "red".to_owned(),
                 EngineError::RequestError => "green".to_owned(),
                 EngineError::EmptyResultSet => "blue".to_owned(),
                 EngineError::UnexpectedError => "red".to_owned(),

src/models/engine_models.rs

@@ -2,12 +2,14 @@
 //! the upstream search engines with the search query provided by the user.
 
 use super::aggregation_models::SearchResult;
-use error_stack::{Result, ResultExt};
+use error_stack::{Report, Result, ResultExt};
 use std::{collections::HashMap, fmt, time::Duration};
 
 /// A custom error type used for handle engine associated errors.
 #[derive(Debug)]
 pub enum EngineError {
+    /// No matching engine found
+    NoSuchEngineFound(String),
     /// This variant handles all request related errors like forbidden, not found,
     /// etc.
     EmptyResultSet,
@@ -24,6 +26,9 @@ pub enum EngineError {
 impl fmt::Display for EngineError {
     fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
         match self {
+            EngineError::NoSuchEngineFound(engine) => {
+                write!(f, "No such engine with the name '{engine}' found")
+            }
             EngineError::EmptyResultSet => {
                 write!(f, "The upstream search engine returned an empty result set")
             }
@@ -134,18 +139,25 @@ impl EngineHandler {
     /// # Returns
     ///
     /// It returns an option either containing the value or a none if the engine is unknown
-    pub fn new(engine_name: &str) -> Option<Self> {
+    pub fn new(engine_name: &str) -> Result<Self, EngineError> {
         let engine: (&'static str, Box<dyn SearchEngine>) =
             match engine_name.to_lowercase().as_str() {
-                "duckduckgo" => (
+                "duckduckgo" => {
-                    "duckduckgo",
+                    let engine = crate::engines::duckduckgo::DuckDuckGo::new()?;
-                    Box::new(crate::engines::duckduckgo::DuckDuckGo),
+                    ("duckduckgo", Box::new(engine))
-                ),
+                }
-                "searx" => ("searx", Box::new(crate::engines::searx::Searx)),
+                "searx" => {
-                _ => return None,
+                    let engine = crate::engines::searx::Searx::new()?;
+                    ("searx", Box::new(engine))
+                }
+                _ => {
+                    return Err(Report::from(EngineError::NoSuchEngineFound(
+                        engine_name.to_string(),
+                    )))
+                }
             };
 
-        Some(Self {
+        Ok(Self {
             engine: engine.1,
             name: engine.0,
         })

src/server/routes/search.rs

@@ -191,7 +191,7 @@ async fn results(
                     let engines: Vec<EngineHandler> = cookie_value
                         .engines
                         .iter()
-                        .filter_map(|name| EngineHandler::new(name))
+                        .filter_map(|name| EngineHandler::new(name).ok())
                         .collect();
 
                     safe_search_level = match config.safe_search {