libpq/
ssl.rs

1#[derive(Clone, Copy, Debug, Eq, PartialEq)]
2pub enum Attribute {
3    /** Name of the SSL implementation in use. (Currently, only "OpenSSL" is implemented) */
4    Library,
5    /**
6     * SSL/TLS version in use. Common values are "TLSv1", "TLSv1.1" and "TLSv1.2", but an
7     * implementation may return other strings if some other protocol is used.
8     */
9    Protocol,
10    /** Number of key bits used by the encryption algorithm. */
11    KeyBits,
12    /**
13     * A short name of the ciphersuite used, e.g. "DHE-RSA-DES-CBC3-SHA". The names are specific to
14     * each SSL implementation.
15     */
16    Cipher,
17    /**
18     * If SSL compression is in use, returns the name of the compression algorithm, or "on" if
19     * compression is used but the algorithm is not known. If compression is not in use, returns
20     * "off".
21     */
22    Compression,
23    /**
24     * Application protocol selected by the TLS Application-Layer Protocol Negotiation (ALPN)
25     * extension. The only protocol supported by libpq is postgresql, so this is mainly useful for
26     * checking whether the server supported ALPN or not. Empty string if ALPN was not used.
27     */
28    Alpn,
29}
30
31impl std::fmt::Display for Attribute {
32    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
33        let s = format!("{self:?}").to_lowercase();
34        f.write_str(&s)
35    }
36}
37
38#[doc(hidden)]
39impl TryFrom<&String> for Attribute {
40    type Error = crate::errors::Error;
41
42    fn try_from(value: &String) -> Result<Self, Self::Error> {
43        let attribute = match value.as_str() {
44            "library" => Self::Library,
45            "protocol" => Self::Protocol,
46            "key_bits" => Self::KeyBits,
47            "cipher" => Self::Cipher,
48            "compression" => Self::Compression,
49            "alpn" => Self::Alpn,
50            _ => return Err(crate::errors::Error::InvalidSslAttribute(value.clone())),
51        };
52
53        Ok(attribute)
54    }
55}
libpq/ssl.rs

libpq/
ssl.rs
