From c655b939a4d2be165c1ac7c25ebe96b974a85aec Mon Sep 17 00:00:00 2001 From: Bartal Laearsson Date: Thu, 13 Aug 2026 14:51:28 +0100 Subject: [PATCH] yeah works --- .gitignore | 2 + Cargo.lock | 2012 +++++++++++++++++++++++++++++++++++++++++++ Cargo.toml | 17 + src/config.rs | 5 + src/error_logger.rs | 41 + src/extractor.rs | 25 + src/fetcher.rs | 99 +++ src/main.rs | 52 ++ src/scraper.rs | 135 +++ src/url_utils.rs | 127 +++ 10 files changed, 2515 insertions(+) create mode 100644 .gitignore create mode 100644 Cargo.lock create mode 100644 Cargo.toml create mode 100644 src/config.rs create mode 100644 src/error_logger.rs create mode 100644 src/extractor.rs create mode 100644 src/fetcher.rs create mode 100644 src/main.rs create mode 100644 src/scraper.rs create mode 100644 src/url_utils.rs diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..4e540c8 --- /dev/null +++ b/.gitignore @@ -0,0 +1,2 @@ +/target +scraped* diff --git a/Cargo.lock b/Cargo.lock new file mode 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+scraper = "0.22" +serde = { version = "1", features = ["derive"] } +serde_json = "1" +sha2 = "0.10" +tokio = { version = "1", features = ["full"] } +url = "2" diff --git a/src/config.rs b/src/config.rs new file mode 100644 index 0000000..05795a3 --- /dev/null +++ b/src/config.rs @@ -0,0 +1,5 @@ +pub const DELAY_MS: u64 = 100; +pub const TIMEOUT_SECS: u64 = 60; +pub const MAX_RETRIES: u32 = 3; +pub const RETRY_BACKOFF_SECS: u64 = 5; +pub const USER_AGENT: &str = "web-scraper/1.0 (research)"; diff --git a/src/error_logger.rs b/src/error_logger.rs new file mode 100644 index 0000000..f5aab5f --- /dev/null +++ b/src/error_logger.rs @@ -0,0 +1,41 @@ +use chrono::{DateTime, Utc}; +use serde::Serialize; +use std::fs::OpenOptions; +use std::io::Write; +use std::path::Path; +use url::Url; + +#[derive(Serialize)] +pub struct ErrorEntry { + pub timestamp: DateTime, + pub url: String, + pub error_type: String, + pub message: String, + #[serde(skip_serializing_if = "Option::is_none")] + pub status_code: Option, +} + +pub fn log_error( + log_path: &Path, + url: &Url, + error_type: &str, + message: &str, + status_code: Option, +) { + let entry = ErrorEntry { + timestamp: Utc::now(), + url: url.to_string(), + error_type: error_type.to_string(), + message: message.to_string(), + status_code, + }; + + let line = serde_json::to_string(&entry).unwrap_or_default() + "\n"; + + if let Ok(mut file) = OpenOptions::new().append(true).create(true).open(log_path) { + let _ = file.write_all(line.as_bytes()); + let _ = file.flush(); + } + + println!(" LOGGED ERROR [{}]: {}", error_type, message); +} diff --git a/src/extractor.rs b/src/extractor.rs new file mode 100644 index 0000000..4a35f13 --- /dev/null +++ b/src/extractor.rs @@ -0,0 +1,25 @@ +use scraper::{Html, Selector}; +use std::collections::HashSet; +use url::Url; + +pub fn extract_links(html: &str, base_url: &Url, base_domain: &str) -> HashSet { + let document = Html::parse_document(html); + let selector = Selector::parse("a[href]").unwrap(); + + document + .select(&selector) + .filter_map(|el| el.value().attr("href")) + .filter(|href| !href.is_empty()) + .filter(|href| { + !href.starts_with("mailto:") + && !href.starts_with("tel:") + && !href.starts_with("javascript:") + }) + .filter_map(|href| base_url.join(href).ok()) + .filter(|url| crate::url_utils::is_internal(url, base_domain)) + .map(|mut url| { + url.set_fragment(None); + url + }) + .collect() +} diff --git a/src/fetcher.rs b/src/fetcher.rs new file mode 100644 index 0000000..5c8852e --- /dev/null +++ b/src/fetcher.rs @@ -0,0 +1,99 @@ +use crate::config::{MAX_RETRIES, RETRY_BACKOFF_SECS, TIMEOUT_SECS, USER_AGENT}; +use anyhow::{Result, anyhow}; +use reqwest::Client; +use std::time::Duration; +use url::Url; + +pub struct Fetcher { + client: Client, +} + +impl Fetcher { + pub fn new() -> Self { + let client = Client::builder() + .timeout(Duration::from_secs(TIMEOUT_SECS)) + .user_agent(USER_AGENT) + .redirect(reqwest::redirect::Policy::limited(10)) + .build() + .expect("Failed to create HTTP client"); + + Self { client } + } + + pub async fn fetch_with_retry(&self, url: &Url) -> Result { + for attempt in 1..=MAX_RETRIES { + match self.client.get(url.as_str()).send().await { + Ok(resp) => { + let status = resp.status(); + let final_url = resp.url().clone(); + let content_type = resp + .headers() + .get("content-type") + .and_then(|h| h.to_str().ok()) + .unwrap_or("") + .to_string(); + + let bytes = match resp.bytes().await { + Ok(b) => b.to_vec(), + Err(e) => { + if attempt < MAX_RETRIES { + self.print_retry(attempt, &e.to_string()); + tokio::time::sleep(Duration::from_secs( + RETRY_BACKOFF_SECS * attempt as u64, + )) + .await; + continue; + } + return Err(anyhow!( + "Body read failed after {} retries: {}", + MAX_RETRIES, + e + )); + } + }; + + if !status.is_success() { + return Err(anyhow!("HTTP {}", status.as_u16())); + } + + return Ok(FetchResult { + bytes, + content_type, + final_url, + }); + } + Err(e) => { + if attempt < MAX_RETRIES { + self.print_retry(attempt, &e.to_string()); + tokio::time::sleep(Duration::from_secs( + RETRY_BACKOFF_SECS * attempt as u64, + )) + .await; + continue; + } + return Err(anyhow!( + "Request failed after {} retries: {}", + MAX_RETRIES, + e + )); + } + } + } + + Err(anyhow!("Exhausted all {} retries", MAX_RETRIES)) + } + + fn print_retry(&self, attempt: u32, error: &str) { + let wait = RETRY_BACKOFF_SECS * attempt as u64; + println!( + " retry {}/{} in {}s... ({})", + attempt, MAX_RETRIES, wait, error + ); + } +} + +pub struct FetchResult { + pub bytes: Vec, + pub content_type: String, + pub final_url: Url, +} diff --git a/src/main.rs b/src/main.rs new file mode 100644 index 0000000..87b6436 --- /dev/null +++ b/src/main.rs @@ -0,0 +1,52 @@ +// src/main.rs + +mod config; +mod error_logger; +mod extractor; +mod fetcher; +mod scraper; +mod url_utils; + +use scraper::Scraper; +use std::fs; +use std::path::PathBuf; +use url::Url; + +#[tokio::main] +async fn main() -> anyhow::Result<()> { + let args: Vec = std::env::args().collect(); + + if args.len() < 2 { + eprintln!("Usage: site-scraper "); + eprintln!("Example: site-scraper https://www.logting.fo"); + std::process::exit(1); + } + + let start_url = &args[1]; + let url = Url::parse(start_url)?; + + let base_domain = url_utils::derive_base_domain(&url) + .ok_or_else(|| anyhow::anyhow!("Could not parse hostname from {}", start_url))?; + + let output_dir_name = format!("scraped_{}", base_domain.replace('.', "_")); + let output_dir = PathBuf::from(&output_dir_name); + let logs_dir = output_dir.join("logs"); + + fs::create_dir_all(&logs_dir)?; + + let log_path = logs_dir.join("scrape_errors.jsonl"); + fs::remove_file(&log_path).ok(); + + println!("Scraping: {}", start_url); + println!("Base domain: {}", base_domain); + println!("Output dir: {}", output_dir.display()); + println!(); + + let scraper = Scraper::new(output_dir, log_path, base_domain); + let (count, errors) = scraper.run(&url).await; + + println!("\nDone. Fetched {} URLs. Errors: {}.", count, errors); + println!("Error log: {}/logs/scrape_errors.jsonl", output_dir_name); + + Ok(()) +} diff --git a/src/scraper.rs b/src/scraper.rs new file mode 100644 index 0000000..fff4933 --- /dev/null +++ b/src/scraper.rs @@ -0,0 +1,135 @@ +// src/scraper.rs + +use crate::error_logger::log_error; +use crate::extractor::extract_links; +use crate::fetcher::{FetchResult, Fetcher}; +use crate::url_utils::{normalize_url, url_to_filename}; +use anyhow::Result; +use std::collections::HashSet; +use std::collections::VecDeque; +use std::fs; +use std::sync::Arc; +use std::time::Duration; +use tokio::sync::Mutex; +use url::Url; + +pub struct Scraper { + fetcher: Fetcher, + seen: Arc>>, + output_dir: std::path::PathBuf, + log_path: std::path::PathBuf, + base_domain: String, +} + +impl Scraper { + pub fn new( + output_dir: std::path::PathBuf, + log_path: std::path::PathBuf, + base_domain: String, + ) -> Self { + Self { + fetcher: Fetcher::new(), + seen: Arc::new(Mutex::new(HashSet::new())), + output_dir, + log_path, + base_domain, + } + } + + pub async fn run(&self, start_url: &Url) -> (usize, usize) { + let mut queue: VecDeque = VecDeque::new(); + queue.push_back(start_url.clone()); + + let mut count = 0usize; + let mut error_count = 0usize; + + while let Some(raw_url) = queue.pop_front() { + let url = match normalize_url(raw_url.as_str()) { + Some(u) => u, + None => continue, + }; + + let url_key = url.as_str().to_string(); + + { + let mut seen = self.seen.lock().await; + if seen.contains(&url_key) { + continue; + } + seen.insert(url_key.clone()); + } + + println!("[{}] fetching: {}", count, url); + + match self.fetcher.fetch_with_retry(&url).await { + Ok(result) => { + let is_html = result.content_type.contains("text/html"); + + match self.save(&result).await { + Ok(()) => { + if is_html { + if let Ok(html) = std::str::from_utf8(&result.bytes) { + let links = + extract_links(html, &result.final_url, &self.base_domain); + + // Only queue links not already seen — do NOT insert into seen here. + // They get inserted when actually fetched, matching the Python version. + let mut new_links = Vec::new(); + + { + let seen = self.seen.lock().await; + for link in &links { + if !seen.contains(link.as_str()) { + new_links.push(link.clone()); + } + } + } + + let new_count = new_links.len(); + + for link in new_links { + queue.push_back(link); + } + + println!(" found {} links ({} new)", links.len(), new_count); + } + } else { + println!(" binary: {}", result.content_type); + } + } + Err(e) => { + log_error( + &self.log_path, + &result.final_url, + "save_error", + &e.to_string(), + None, + ); + error_count += 1; + } + } + } + Err(e) => { + log_error(&self.log_path, &url, "fetch_error", &e.to_string(), None); + error_count += 1; + } + } + + count += 1; + tokio::time::sleep(Duration::from_millis(crate::config::DELAY_MS)).await; + } + + (count, error_count) + } + + async fn save(&self, result: &FetchResult) -> Result<()> { + let filename = url_to_filename(&result.final_url, &result.content_type); + let filepath = self.output_dir.join(&filename); + fs::write(&filepath, &result.bytes)?; + println!( + " saved -> {}", + filepath.file_name().unwrap_or_default().to_string_lossy() + ); + Ok(()) + } +} diff --git a/src/url_utils.rs b/src/url_utils.rs new file mode 100644 index 0000000..ebbbff7 --- /dev/null +++ b/src/url_utils.rs @@ -0,0 +1,127 @@ +// src/url_utils.rs + +use md5::Md5; +use sha2::{Digest, Sha256}; +use url::Url; + +pub fn derive_base_domain(url: &Url) -> Option { + let host = url.host_str()?; + let parts: Vec<&str> = host.split('.').collect(); + if parts.len() >= 2 { + Some(parts[parts.len() - 2..].join(".")) + } else { + Some(host.to_string()) + } +} + +pub fn is_internal(url: &Url, base_domain: &str) -> bool { + match url.host_str() { + Some(host) => host == base_domain || host.ends_with(&format!(".{}", base_domain)), + None => false, + } +} + +pub fn normalize_url(url: &str) -> Option { + let cleaned = url.split('#').next().unwrap_or(url); + let cleaned = cleaned.trim_end_matches(['?', '&']); + let mut parsed = Url::parse(cleaned).ok()?; + parsed.set_fragment(None); + Some(parsed) +} + +fn get_extension(url: &Url, content_type: &str) -> String { + let path = url.path(); + let last_segment = path.rsplit('/').next().unwrap_or(path); + + if let Some(dot_pos) = last_segment.rfind('.') { + if dot_pos > 0 { + return last_segment[dot_pos..].to_lowercase(); + } + } + + let ct = content_type + .split(';') + .next() + .unwrap_or("") + .trim() + .to_lowercase(); + + match ct.as_str() { + "text/html" => ".html", + "application/pdf" => ".pdf", + "application/json" => ".json", + "application/xml" | "text/xml" => ".xml", + "text/plain" => ".txt", + "text/css" => ".css", + "application/javascript" | "text/javascript" => ".js", + "image/png" => ".png", + "image/jpeg" => ".jpg", + "image/gif" => ".gif", + "image/svg+xml" => ".svg", + "image/webp" => ".webp", + "application/vnd.ms-excel" => ".xls", + "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" => ".xlsx", + "application/msword" => ".doc", + "application/vnd.openxmlformats-officedocument.wordprocessingml.document" => ".docx", + "application/zip" => ".zip", + "application/octet-stream" => ".bin", + _ => ".bin", + } + .to_string() +} + +pub fn url_to_filename(url: &Url, content_type: &str) -> String { + let url_str = url.as_str(); + + if url_str.len() > 200 { + let mut hasher = Sha256::new(); + hasher.update(url_str.as_bytes()); + let hash = hex::encode(hasher.finalize()); + let ext = get_extension(url, content_type); + return format!("{}{}", &hash[..16], ext); + } + + let host = url + .host_str() + .unwrap_or("unknown") + .replace('.', "_") + .replace(':', "_"); + + let path = url.path().trim_start_matches('/'); + let path = if path.is_empty() { "index" } else { path }; + + let last_segment = path.rsplit('/').next().unwrap_or(path); + + let (stem, ext_from_path) = match last_segment.rfind('.') { + Some(pos) if pos > 0 => (&last_segment[..pos], Some(&last_segment[pos..])), + _ => (last_segment, None), + }; + + let ext = match ext_from_path { + Some(e) => e.to_lowercase(), + None => get_extension(url, content_type), + }; + + let query_suffix = match url.query() { + Some(q) if !q.is_empty() => { + let mut hasher = Md5::new(); + hasher.update(q.as_bytes()); + let hash = hex::encode(hasher.finalize()); + format!("_{}", &hash[..8]) + } + _ => String::new(), + }; + + let filename = format!("{}_{}{}{}", host, stem, query_suffix, ext); + + filename + .chars() + .map(|c| { + if c.is_alphanumeric() || "._-".contains(c) { + c + } else { + '_' + } + }) + .collect() +}