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0.1.2-beta Добавено: 8.11.2026 г., 2:53 · Построена: 7.11.2026 г., 19:32

keys.rs Добавено: Дата, която не е регистрирана 4,2 KB · 95 линии

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1//! Private-key loading for SSH authentication (OpenSSH, PKCS#1/#5/#8 PEM, PuTTY PPK) and

2//! the public-key fingerprint used for lockout protection in Users.

4use crate::core::error::{CoreError, CoreResult};

5use base64::Engine;

6use russh::keys::PrivateKey;

7use sha2::{Digest, Sha256};

8use std::path::Path;

10pub const MAX_KEY_BYTES: u64 = 2 * 1024 * 1024;

12pub fn read_private_key_file(path: &str) -> CoreResult<String> {

13 if path.to_lowercase().ends_with(".pub") {

14 return Err(CoreError::new("PUBLIC_KEY_SELECTED", "Select a private key, not a .pub file."));

15 }

    let meta = std::fs::metadata(path).map_err(|_| CoreError::new("PRIVATE_KEY_NOT_FOUND", "The private key file cannot be read."))?;

17 if !meta.is_file() || meta.len() == 0 || meta.len() > MAX_KEY_BYTES {

18 return Err(CoreError::new("PRIVATE_KEY_INVALID", "The private key file is invalid or too large."));

19 }

    let bytes = std::fs::read(path).map_err(|_| CoreError::new("PRIVATE_KEY_NOT_FOUND", "The private key file cannot be read."))?;

    String::from_utf8(bytes).map_err(|_| CoreError::new("PRIVATE_KEY_INVALID", "The private key file is not a supported text key format."))

22}

24pub fn decode_private_key(text: &str, passphrase: Option<&str>) -> CoreResult<PrivateKey> {

25 let passphrase = passphrase.filter(|p| !p.is_empty());

26 match russh::keys::decode_secret_key(text, passphrase) {

27 Ok(key) => Ok(key),

        Err(russh::keys::Error::KeyIsEncrypted) => Err(CoreError::new("PRIVATE_KEY_PASSPHRASE_REQUIRED", "The private key is encrypted; enter its passphrase.")),

29 Err(error) => Err(CoreError::new(

30 if passphrase.is_some() { "PRIVATE_KEY_PASSPHRASE_INVALID" } else { "PRIVATE_KEY_UNSUPPORTED" },

31 format!("Cannot parse privateKey: {error}"),

32 )),

33 }

34}

36pub fn fingerprint_of_blob(blob: &[u8]) -> String {

37 format!("SHA256:{}", base64::engine::general_purpose::STANDARD_NO_PAD.encode(Sha256::digest(blob)))

38}

40/// `SHA256:…` fingerprint of the public half of a private key file (or its `.pub`).

41pub fn public_key_fingerprint_for_private_key(path: &str) -> Option<String> {

42 if let Ok(text) = std::fs::read_to_string(path) {

43 // Public half of an OpenSSH container is readable without the passphrase.

44 if let Ok(key) = ssh_key_public_from_openssh(&text) {

45 return Some(fingerprint_of_blob(&key));

46 }

47 if let Ok(key) = russh::keys::decode_secret_key(&text, None) {

48 if let Ok(blob) = key.public_key().to_bytes() {

49 return Some(fingerprint_of_blob(&blob));

50 }

51 }

52 }

53 let public = std::fs::read_to_string(format!("{path}.pub")).ok()?;

54 let blob = base64::engine::general_purpose::STANDARD.decode(public.split_whitespace().nth(1)?).ok()?;

55 (!blob.is_empty()).then(|| fingerprint_of_blob(&blob))

56}

58fn ssh_key_public_from_openssh(text: &str) -> CoreResult<Vec<u8>> {

59 let key = russh::keys::ssh_key::PrivateKey::from_openssh(text.trim()).map_err(|e| CoreError::plain(e.to_string()))?;

60 key.public_key().to_bytes().map_err(|e| CoreError::plain(e.to_string()))

61}

63pub fn sha256_hex(blob: &[u8]) -> String {

64 hex::encode(Sha256::digest(blob))

65}

67pub fn exists(path: &str) -> bool {

68 Path::new(path).is_file()

69}

71#[cfg(test)]

72mod tests {

73 use super::*;

75 #[test]

76 fn key_file_is_judged_by_content_not_by_name() {

77 let dir = tempfile::tempdir().unwrap();

78 for name in ["randomnazev", "randomnazev.key", "randomnazev.ssh", "randomnazev.priv"] {

79 let path = dir.path().join(name);

80 std::fs::write(&path, "key text").unwrap();

81 assert_eq!(read_private_key_file(path.to_str().unwrap()).unwrap(), "key text", "{name}");

82 }

83 let public = dir.path().join("randomnazev.pub");

84 std::fs::write(&public, "key text").unwrap();

85 assert_eq!(read_private_key_file(public.to_str().unwrap()).unwrap_err().code, "PUBLIC_KEY_SELECTED");

86 }

88 #[test]

89 fn key_picker_has_no_extension_filter() {

90 let source = include_str!("../../commands/profiles.rs");

91 let start = source.find("fn core_profiles_select_private_key").unwrap();

92 let body = &source[start..start + source[start..].find("#[tauri::command]").unwrap()];

93 assert!(!body.contains("extensions"), "{body}");

94 }

95}

SHA-256

93dad06da3e17434695c50844c3253b7f330db4368f87699f868f4b7ddad758f

CH-J Proprietary Software License 1.14 · Източникът е предоставен под CH-J Proprietary Software License 1.14. Неговата наличност не променя лицензионните условия или не предоставя допълнителни права.

Архив SHA-256

ac8fe790f4ba60fc098f8c985fc2656cfcc6cdc21fb34b30e308a2b54e62258f

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