shardx 0.1.7

Self-contained Rust SDK for the ShardX anti-detect browser — downloads the engine + Widevine + fingerprint library on first use, launches isolated profiles.
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

//! Host machine introspection — logical CPU count, physical RAM, primary
//! monitor resolution. Mirrors `host_logical_cores` / `host_ram_gb` /
//! `host_ram_bucket_gb` in the launcher. All probes are best-effort.

use std::process::Command;

/// Primary monitor size in CSS pixels.
pub type Size = (u32, u32);

/// Logical CPU count (SMT threads). Falls back to 8.
pub fn host_logical_cores() -> usize {
    std::thread::available_parallelism()
        .map(|n| n.get())
        .unwrap_or(8)
}

fn cmd_out(program: &str, args: &[&str]) -> Option<String> {
    let out = Command::new(program).args(args).output().ok()?;
    if !out.status.success() {
        return None;
    }
    Some(String::from_utf8_lossy(&out.stdout).to_string())
}

/// Physical RAM in GiB, best-effort per OS. `None` on failure.
#[allow(clippy::needless_return)]
pub fn host_ram_gb() -> Option<u64> {
    #[cfg(target_os = "macos")]
    {
        let out = cmd_out("sysctl", &["-n", "hw.memsize"])?;
        let bytes: u64 = out.trim().parse().ok()?;
        if bytes == 0 {
            return None;
        }
        return Some(bytes / (1024 * 1024 * 1024));
    }
    #[cfg(target_os = "linux")]
    {
        let txt = std::fs::read_to_string("/proc/meminfo").ok()?;
        for line in txt.lines() {
            if let Some(rest) = line.strip_prefix("MemTotal:") {
                let kb: u64 = rest.split_whitespace().next()?.parse().ok()?;
                if kb == 0 {
                    return None;
                }
                return Some(kb / (1024 * 1024));
            }
        }
        return None;
    }
    #[cfg(target_os = "windows")]
    {
        let out = cmd_out(
            "powershell",
            &[
                "-NoProfile",
                "-Command",
                "(Get-CimInstance Win32_ComputerSystem).TotalPhysicalMemory",
            ],
        )?;
        let bytes: u64 = out.trim().parse().ok()?;
        if bytes == 0 {
            return None;
        }
        return Some(bytes / (1024 * 1024 * 1024));
    }
    #[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
    {
        None
    }
}

/// Round host RAM to Chrome's deviceMemory bucket {8,16,32}; `None` → 16.
pub fn host_ram_bucket_gb() -> u64 {
    match host_ram_gb() {
        None => 16,
        Some(gb) if gb >= 32 => 32,
        Some(gb) if gb >= 16 => 16,
        Some(_) => 8,
    }
}

/// Primary monitor `(width, height)`, or `None` on failure.
#[allow(clippy::needless_return)]
pub fn host_screen_size() -> Option<Size> {
    #[cfg(target_os = "macos")]
    {
        let out = cmd_out("system_profiler", &["SPDisplaysDataType"])?;
        let mut best: Option<Size> = None;
        for line in out.lines() {
            if let Some(idx) = line.find("Resolution:") {
                let rest = &line[idx + "Resolution:".len()..];
                let nums: Vec<u32> = rest
                    .split(|c: char| !c.is_ascii_digit())
                    .filter(|s| !s.is_empty())
                    .filter_map(|s| s.parse().ok())
                    .collect();
                if nums.len() >= 2 {
                    let (w, h) = (nums[0], nums[1]);
                    if best.map(|(bw, bh)| w * h > bw * bh).unwrap_or(true) {
                        best = Some((w, h));
                    }
                }
            }
        }
        return best;
    }
    #[cfg(target_os = "windows")]
    {
        let out = cmd_out(
            "powershell",
            &[
                "-NoProfile",
                "-Command",
                "Add-Type -AssemblyName System.Windows.Forms; $s=[System.Windows.Forms.Screen]::PrimaryScreen.Bounds; \"$($s.Width)x$($s.Height)\"",
            ],
        )?;
        return parse_wxh(out.trim());
    }
    #[cfg(target_os = "linux")]
    {
        let out = cmd_out("xrandr", &["--query"])?;
        for line in out.lines() {
            if line.contains('*') {
                let token = line.split_whitespace().find(|t| t.contains('x'))?;
                return parse_wxh(token);
            }
        }
        return None;
    }
    #[cfg(not(any(target_os = "macos", target_os = "linux", target_os = "windows")))]
    {
        None
    }
}

#[allow(dead_code)]
fn parse_wxh(s: &str) -> Option<Size> {
    let s = s.trim();
    let (w, rest) = s.split_once('x')?;
    let h: String = rest.chars().take_while(|c| c.is_ascii_digit()).collect();
    Some((w.trim().parse().ok()?, h.parse().ok()?))
}