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use self::url::Url; use regex::Regex; use reqwest::Client; use reqwest::Method; use reqwest::Request; use reqwest::StatusCode; use std::path::Path; use std::path::PathBuf; extern crate url; #[derive(Debug, PartialEq)] pub enum LinkType { HTTP, FTP, Mail, FileSystem, } #[derive(Debug, PartialEq)] pub enum LinkCheckResult { Ok, Failed(String), Warning(String), NotImplemented(String), } pub fn check(link_source: &str, link_target: &str) -> LinkCheckResult { info!("Check link {} => {}.", &link_source, &link_target); let link_type_opt = get_link_type(link_target); match link_type_opt { None => { LinkCheckResult::Failed(format!("Could not determine link type of {}.", link_target)) } Some(link_type) => match link_type { LinkType::FTP => LinkCheckResult::NotImplemented(format!( "Link type '{:?}' is not supported yet...", &link_type )), LinkType::Mail => check_mail(link_target), LinkType::HTTP => check_http(link_target), LinkType::FileSystem => check_filesystem(link_source, link_target), }, } } fn check_mail(target: &str) -> LinkCheckResult { lazy_static! { static ref EMAIL_REGEX: Regex = Regex::new( r"^mailto://([a-z0-9_+]([a-z0-9_+.]*[a-z0-9_+])?)@([a-z0-9]+([\-\.]{1}[a-z0-9]+)*\.[a-z]{2,6})" ) .unwrap(); } if EMAIL_REGEX.is_match(target) { LinkCheckResult::Ok } else { LinkCheckResult::Failed(format!("Not a valid mail adress.")) } } fn check_http(target: &str) -> LinkCheckResult { lazy_static! { static ref CLIENT: Client = Client::new(); } let url = reqwest::Url::parse(&target).expect("URL of unknown type"); let request = Request::new(Method::HEAD, url); fn status_to_string(status: &StatusCode) -> String { format!( "{} - {}", status.as_str(), status.canonical_reason().unwrap_or("Unknown reason") ) } match CLIENT.execute(request) { Ok(response) => { let status = response.status(); if status.is_success() { LinkCheckResult::Ok } else if status.is_redirection() { LinkCheckResult::Warning(status_to_string(&status)) } else { LinkCheckResult::Failed(status_to_string(&status)) } } Err(error_msg) => LinkCheckResult::Failed(format!("Http(s) request failed. {}", error_msg)), } } fn check_filesystem(source: &str, target: &str) -> LinkCheckResult { let target = absolute_target_path(source, target); if target.exists() { LinkCheckResult::Ok } else { LinkCheckResult::Failed("Target path not found.".to_string()) } } fn absolute_target_path(source: &str, target: &str) -> PathBuf { if Path::new(target).is_relative() { let parent = Path::new(source).parent().unwrap_or(Path::new("./")); parent.join(target) } else { Path::new(target).to_path_buf() } } fn get_link_type(link: &str) -> Option<LinkType> { lazy_static! { static ref FILE_SYSTEM_REGEX: Regex = Regex::new(r"^(([[:alpha:]]:(\\|/))|(..?(\\|/))|((\\\\?|//?))).*").unwrap(); } if FILE_SYSTEM_REGEX.is_match(link) || !link.contains(':') { return Some(LinkType::FileSystem); } if let Ok(url) = Url::parse(&link) { let scheme = url.scheme(); debug!("Link {} is a URL type with scheme {}", link, scheme); match scheme { "http" => return Some(LinkType::HTTP), "https" => return Some(LinkType::HTTP), "ftp" => return Some(LinkType::FTP), "ftps" => return Some(LinkType::FTP), "mailto" => return Some(LinkType::Mail), "file" => return Some(LinkType::FileSystem), _ => return None, } } None } #[cfg(test)] mod tests { use super::*; use ntest::test_case; fn test_link(link: &str, expected_type: &LinkType) { let link_type = get_link_type(link).expect(format!("Unknown link type for link {}", link).as_str()); assert_eq!(link_type, *expected_type); } #[test_case("mailto://+bar@bar.com")] #[test_case("mailto://foo+@bar.com")] #[test_case("mailto://foo.lastname@bar.com")] fn mail_links(link: &str) { let result = check("NotImportant", link); assert_eq!(result, LinkCheckResult::Ok); } #[test_case("mailto://+bar@bar")] #[test_case("mailto://foobar.com")] #[test_case("mailto://foo.lastname.com")] fn invalid_mail_links(link: &str) { let result = check("NotImportant", link); assert!(result != LinkCheckResult::Ok); } #[test_case("https://doc.rust-lang.org.html")] #[test_case("http://www.website.php")] fn http_link_types(link: &str) { test_link(link, &LinkType::HTTP); } #[test_case("ftp://mueller:12345@ftp.downloading.ch")] fn ftp_link_types(ftp: &str) { test_link(ftp, &LinkType::FTP); } #[test_case("mailto://name.latname@company.com")] #[test_case("mailto://tst@xyz.us")] fn mail_link_types(mail: &str) { test_link(mail, &LinkType::Mail); } #[test_case("F:/fake/windows/paths")] #[test_case("\\\\smb}\\paths")] #[test_case("C:\\traditional\\paths")] #[test_case("\\file.ext")] #[test_case("file:///some/path/")] #[test_case("path")] #[test_case("./file.ext")] #[test_case(".\\file.md")] #[test_case("../upper_dir.md")] #[test_case("..\\upper_dir.mdc")] #[test_case("D:\\Program Files(x86)\\file.log")] #[test_case("D:\\Program Files(x86)\\folder\\file.log")] fn test_file_system_link_types(link: &str) { test_link(link, &LinkType::FileSystem); } #[test] fn check_http_request() { let result = check("NotImportant", "http://gitlab.com/becheran/mlc"); assert!(result == LinkCheckResult::Ok); } #[test] fn check_https_request() { let result = check("NotImportant", "https://gitlab.com/becheran/mlc"); assert!(result == LinkCheckResult::Ok); } #[test] fn check_wrong_http_request() { let result = check("NotImportant", "https://doesNotExist.me/even/less/likelly"); assert!(result != LinkCheckResult::Ok); } }