make possible to unwrap NOSCRIPT nodes

README.md

@@ -75,6 +75,7 @@ or
  - `-j`: Exclude JavaScript
  - `-k`: Accept invalid X.509 (TLS) certificates
  - `-M`: Don't add timestamp and URL information
+ - `-n`: Extract contents of NOSCRIPT tags
  - `-o`: Write output to `file`
  - `-s`: Be quiet
  - `-t`: Adjust `network request timeout`

src/html.rs

@@ -474,6 +474,11 @@ pub fn stringify_document(handle: &Handle, options: &Options) -> String {
         result = String::from_utf8(buf).unwrap();
     }
 
+    if options.unwrap_noscript {
+        let noscript_re = Regex::new(r"<(?P<c>/?noscript)>").unwrap();
+        result = noscript_re.replace_all(&result, "<!--$c-->").to_string();
+    }
+
     result
 }
 
@@ -1060,11 +1065,11 @@ pub fn walk_and_embed_assets(
                     for child_node in node.children.borrow_mut().iter_mut() {
                         match child_node.data {
                             NodeData::Text { ref contents } => {
-                                // Get contents of the NOSCRIPT node
+                                // Get contents of NOSCRIPT node
                                 let mut noscript_contents = contents.borrow_mut();
-                                // Parse contents of the NOSCRIPT node
+                                // Parse contents of NOSCRIPT node as DOM
                                 let noscript_contents_dom: RcDom = html_to_dom(&noscript_contents);
-                                // Embed assets within the NOSCRIPT node
+                                // Embed assets of NOSCRIPT node contents
                                 walk_and_embed_assets(
                                     cache,
                                     client,
@@ -1075,7 +1080,7 @@ pub fn walk_and_embed_assets(
                                 );
                                 // Get rid of original contents
                                 noscript_contents.clear();
-                                // Insert HTML containing embedded assets into the NOSCRIPT node
+                                // Insert HTML containing embedded assets back into NOSCRIPT node
                                 if let Some(html) =
                                     get_child_node_by_name(&noscript_contents_dom.document, "html")
                                 {

src/opts.rs

@@ -21,6 +21,7 @@ pub struct Options {
     pub no_video: bool,
     pub target: String,
     pub no_color: bool,
+    pub unwrap_noscript: bool,
 }
 
 const ASCII: &'static str = " \
@@ -55,6 +56,9 @@ impl Options {
             .args_from_usage("-j, --no-js 'Removes JavaScript'")
             .args_from_usage("-k, --insecure 'Allows invalid X.509 (TLS) certificates'")
             .args_from_usage("-M, --no-metadata 'Excludes timestamp and source information'")
+            .args_from_usage(
+                "-n, --unwrap-noscript 'Replaces NOSCRIPT elements with their contents'",
+            )
             .args_from_usage("-o, --output=[document.html] 'Writes output to <file>'")
             .args_from_usage("-s, --silent 'Suppresses verbosity'")
             .args_from_usage("-t, --timeout=[60] 'Adjusts network request timeout'")
@@ -100,6 +104,7 @@ impl Options {
         } else {
             options.user_agent = Some(DEFAULT_USER_AGENT.to_string());
         }
+        options.unwrap_noscript = app.is_present("unwrap-noscript");
         options.no_video = app.is_present("no-video");
 
         options.no_color =

src/tests/cli/local_files.rs

@@ -202,12 +202,12 @@ mod passing {
             format!(
                 "\
                 {file_url_html}\n \
-                {file_url_css}\n\
+                {file_url_svg}\n\
                 ",
                 file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap())
                     .unwrap()
                     .into_string(),
-                file_url_css = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
                     .unwrap()
                     .into_string(),
             )

src/tests/cli/mod.rs

@@ -2,4 +2,5 @@ mod base_url;
 mod basic;
 mod data_url;
 mod local_files;
+mod noscript;
 mod unusual_encodings;

src/tests/cli/noscript.rs

@@ -0,0 +1,164 @@
+//  ██████╗  █████╗ ███████╗███████╗██╗███╗   ██╗ ██████╗
+//  ██╔══██╗██╔══██╗██╔════╝██╔════╝██║████╗  ██║██╔════╝
+//  ██████╔╝███████║███████╗███████╗██║██╔██╗ ██║██║  ███╗
+//  ██╔═══╝ ██╔══██║╚════██║╚════██║██║██║╚██╗██║██║   ██║
+//  ██║     ██║  ██║███████║███████║██║██║ ╚████║╚██████╔╝
+//  ╚═╝     ╚═╝  ╚═╝╚══════╝╚══════╝╚═╝╚═╝  ╚═══╝ ╚═════╝
+
+#[cfg(test)]
+mod passing {
+    use assert_cmd::prelude::*;
+    use std::env;
+    use std::fs;
+    use std::path::Path;
+    use std::process::Command;
+    use url::Url;
+
+    #[test]
+    fn parse_noscript_contents() -> Result<(), Box<dyn std::error::Error>> {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+        let path_html: &Path = Path::new("src/tests/data/noscript/index.html");
+        let path_svg: &Path = Path::new("src/tests/data/noscript/image.svg");
+
+        let out = cmd.arg("-M").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            std::str::from_utf8(&out.stdout).unwrap(),
+            "<html><head></head><body><noscript><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"></noscript>\n</body></html>\n"
+        );
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            std::str::from_utf8(&out.stderr).unwrap(),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap())
+                    .unwrap()
+                    .into_string(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
+                    .unwrap()
+                    .into_string(),
+            )
+        );
+
+        // The exit code should be 0
+        out.assert().code(0);
+
+        Ok(())
+    }
+
+    #[test]
+    fn unwrap_noscript_contents() -> Result<(), Box<dyn std::error::Error>> {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+        let path_html: &Path = Path::new("src/tests/data/noscript/index.html");
+        let path_svg: &Path = Path::new("src/tests/data/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            std::str::from_utf8(&out.stdout).unwrap(),
+            "<html><head></head><body><!--noscript--><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"><!--/noscript-->\n</body></html>\n"
+        );
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            std::str::from_utf8(&out.stderr).unwrap(),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap())
+                    .unwrap()
+                    .into_string(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
+                    .unwrap()
+                    .into_string(),
+            )
+        );
+
+        // The exit code should be 0
+        out.assert().code(0);
+
+        Ok(())
+    }
+
+    #[test]
+    fn unwrap_noscript_contents_nested() -> Result<(), Box<dyn std::error::Error>> {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+        let path_html: &Path = Path::new("src/tests/data/noscript/nested.html");
+        let path_svg: &Path = Path::new("src/tests/data/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            std::str::from_utf8(&out.stdout).unwrap(),
+            "<html><head></head><body><!--noscript--><h1>JS is not active</h1><!--noscript--><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"><!--/noscript--><!--/noscript-->\n</body></html>\n"
+        );
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            std::str::from_utf8(&out.stderr).unwrap(),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap())
+                    .unwrap()
+                    .into_string(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
+                    .unwrap()
+                    .into_string(),
+            )
+        );
+
+        // The exit code should be 0
+        out.assert().code(0);
+
+        Ok(())
+    }
+
+    #[test]
+    fn unwrap_noscript_contents_with_script() -> Result<(), Box<dyn std::error::Error>> {
+        let mut cmd = Command::cargo_bin(env!("CARGO_PKG_NAME"))?;
+        let path_html: &Path = Path::new("src/tests/data/noscript/script.html");
+        let path_svg: &Path = Path::new("src/tests/data/noscript/image.svg");
+
+        let out = cmd.arg("-Mn").arg(path_html.as_os_str()).output().unwrap();
+
+        // STDOUT should contain HTML with no CSS
+        assert_eq!(
+            std::str::from_utf8(&out.stdout).unwrap(),
+            "<html><head></head><body><!--noscript--><img src=\"data:image/svg+xml;base64,PHN2ZyB2ZXJzaW9uPSIxLjEiIGJhc2VQcm9maWxlPSJmdWxsIiB3aWR0aD0iMzAwIiBoZWlnaHQ9IjIwMCIgeG1sbnM9Imh0dHA6Ly93d3cudzMub3JnLzIwMDAvc3ZnIj4KICAgIDxyZWN0IHdpZHRoPSIxMDAlIiBoZWlnaHQ9IjEwMCUiIGZpbGw9InJlZCIgLz4KICAgIDxjaXJjbGUgY3g9IjE1MCIgY3k9IjEwMCIgcj0iODAiIGZpbGw9ImdyZWVuIiAvPgogICAgPHRleHQgeD0iMTUwIiB5PSIxMjUiIGZvbnQtc2l6ZT0iNjAiIHRleHQtYW5jaG9yPSJtaWRkbGUiIGZpbGw9IndoaXRlIj5TVkc8L3RleHQ+Cjwvc3ZnPgo=\"><!--/noscript-->\n</body></html>\n"
+        );
+
+        // STDERR should contain target HTML and embedded SVG files
+        assert_eq!(
+            std::str::from_utf8(&out.stderr).unwrap(),
+            format!(
+                "\
+                {file_url_html}\n \
+                {file_url_svg}\n\
+                ",
+                file_url_html = Url::from_file_path(fs::canonicalize(&path_html).unwrap())
+                    .unwrap()
+                    .into_string(),
+                file_url_svg = Url::from_file_path(fs::canonicalize(&path_svg).unwrap())
+                    .unwrap()
+                    .into_string(),
+            )
+        );
+
+        // The exit code should be 0
+        out.assert().code(0);
+
+        Ok(())
+    }
+}

src/tests/data/noscript/image.svg

@@ -0,0 +1,5 @@
+<svg version="1.1" baseProfile="full" width="300" height="200" xmlns="http://www.w3.org/2000/svg">
+    <rect width="100%" height="100%" fill="red" />
+    <circle cx="150" cy="100" r="80" fill="green" />
+    <text x="150" y="125" font-size="60" text-anchor="middle" fill="white">SVG</text>
+</svg>

src/tests/data/noscript/index.html

@@ -0,0 +1 @@
+<body><noscript><img src="image.svg" /></noscript></body>

src/tests/data/noscript/nested.html

@@ -0,0 +1 @@
+<body><noscript><h1>JS is not active</h1><noscript><img src="image.svg" /></noscript></noscript></body>

src/tests/data/noscript/script.html

@@ -0,0 +1 @@
+<body><noscript><script>alert(1);</script><img src="image.svg" /></noscript></body>