xtool 0.0.16

Amazing Tools
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174

use anyhow::{anyhow, Result};
use log::{error, info};
use std::path::{Path, PathBuf};
use tiny_http::{Header, Method, Response, Server, StatusCode};

pub fn run(port: u16, path: PathBuf) -> Result<()> {
    let root = resolve_root(path)?;

    let addr = format!("0.0.0.0:{}", port);
    let server = Server::http(&addr).map_err(|e| anyhow!("Failed to bind {}: {}", addr, e))?;

    info!("HTTP server listening on http://{}", addr);
    info!("Serving directory: {}", root.display());

    for request in server.incoming_requests() {
        if let Err(err) = handle_request(request, &root) {
            error!("Request handling error: {}", err);
        }
    }

    Ok(())
}

fn resolve_root(path: PathBuf) -> Result<PathBuf> {
    let root = if path.as_os_str().is_empty() {
        PathBuf::from(".")
    } else {
        path
    };

    if !root.exists() {
        return Err(anyhow!("Path does not exist: {}", root.display()));
    }

    let canonical = root.canonicalize().unwrap_or(root);
    Ok(canonical)
}

fn handle_request(request: tiny_http::Request, root: &Path) -> Result<()> {
    if request.method() != &Method::Get {
        let response = Response::empty(StatusCode(405));
        request.respond(response)?;
        return Ok(());
    }

    let url_path = request.url();
    let target_path = match resolve_target_path(root, url_path) {
        Some(path) => path,
        None => {
            let response = Response::empty(StatusCode(404));
            request.respond(response)?;
            return Ok(());
        }
    };

    if !target_path.exists() {
        let response = Response::empty(StatusCode(404));
        request.respond(response)?;
        return Ok(());
    }

    if target_path.is_dir() {
        let listing = build_directory_listing(root, &target_path, url_path)?;
        let mut response = Response::from_string(listing);
        let header = Header::from_bytes("Content-Type", "text/html; charset=utf-8")
            .map_err(|_| anyhow!("Invalid Content-Type header value"))?;
        response.add_header(header);
        request.respond(response)?;
        return Ok(());
    }

    let file = std::fs::File::open(&target_path)?;
    let mut response = Response::from_file(file);

    if let Some(mime) = mime_guess::from_path(&target_path).first() {
        let header = Header::from_bytes("Content-Type", mime.as_ref())
            .map_err(|_| anyhow!("Invalid Content-Type header value"))?;
        response.add_header(header);
    }

    request.respond(response)?;
    Ok(())
}

fn resolve_target_path(root: &Path, url: &str) -> Option<PathBuf> {
    let path_part = url.split('?').next().unwrap_or("");
    let trimmed = path_part.trim_start_matches('/');
    let decoded = urlencoding::decode(trimmed).ok()?.into_owned();

    let joined = if decoded.is_empty() {
        root.to_path_buf()
    } else {
        root.join(decoded.as_str())
    };

    let canonical = joined.canonicalize().ok()?;
    if !canonical.starts_with(root) {
        return None;
    }

    if canonical.is_dir() {
        let index = canonical.join("index.html");
        if index.exists() {
            return Some(index);
        }
    }

    Some(canonical)
}

fn build_directory_listing(root: &Path, dir: &Path, url: &str) -> Result<String> {
    let mut entries: Vec<_> = std::fs::read_dir(dir)?
        .filter_map(Result::ok)
        .collect();

    entries.sort_by_key(|entry| entry.file_name().to_string_lossy().to_lowercase());

    let mut base_path = url.split('?').next().unwrap_or("").to_string();
    if !base_path.ends_with('/') {
        base_path.push('/');
    }

    let rel_dir = dir.strip_prefix(root).unwrap_or(dir);
    let title = if rel_dir.as_os_str().is_empty() {
        "/".to_string()
    } else {
        format!("/{}", rel_dir.to_string_lossy())
    };

    let mut body = String::new();
    body.push_str("<!doctype html><html><head><meta charset=\"utf-8\">");
    body.push_str(&format!("<title>Index of {}</title>", html_escape(&title)));
    body.push_str("</head><body>");
    body.push_str(&format!("<h1>Index of {}</h1><hr><ul>", html_escape(&title)));

    if !rel_dir.as_os_str().is_empty() {
        body.push_str("<li><a href=\"../\">../</a></li>");
    }

    for entry in entries {
        let file_name = entry.file_name();
        let name = file_name.to_string_lossy();
        let mut display = name.to_string();
        let entry_path = entry.path();
        let is_dir = entry_path.is_dir();
        if is_dir {
            display.push('/');
        }

        let encoded_name = urlencoding::encode(&name);
        let href = if is_dir {
            format!("{}{}/", base_path, encoded_name)
        } else {
            format!("{}{}", base_path, encoded_name)
        };

        body.push_str(&format!(
            "<li><a href=\"{}\">{}</a></li>",
            html_escape(&href),
            html_escape(&display)
        ));
    }

    body.push_str("</ul><hr></body></html>");
    Ok(body)
}

fn html_escape(input: &str) -> String {
    input
        .replace('&', "&amp;")
        .replace('<', "&lt;")
        .replace('>', "&gt;")
        .replace('"', "&quot;")
}