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use log::*;
use pretty_hex::PrettyHex;
use std::error;
use std::fmt;
use std::io;
use std::string;
#[derive(Debug)]
pub enum Error {
UnsupportedCipher(Vec<u8>),
UnsupportedKdf(Vec<u8>),
UnsupportedStreamCipher(Vec<u8>),
Decryption,
XmlParse,
BadFormat,
CorruptedFile,
Io(io::Error),
Other(String),
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Self {
Error::Io(err)
}
}
impl From<xmlparser::Error> for Error {
fn from(err: xmlparser::Error) -> Self {
error!("unable to parse xml\n{}", err);
Error::XmlParse
}
}
impl From<string::FromUtf8Error> for Error {
fn from(err: string::FromUtf8Error) -> Self {
error!(
"unable to convert to a string\n{}",
err.as_bytes().hex_dump()
);
Error::Decryption
}
}
impl From<String> for Error {
fn from(err: String) -> Error {
Error::Other(err)
}
}
impl<'a> From<&'a str> for Error {
fn from(err: &'a str) -> Error {
Error::Other(err.to_owned())
}
}
impl error::Error for Error {
fn cause(&self) -> Option<&dyn error::Error> {
if let Error::Io(ref e) = self {
Some(e)
} else {
None
}
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Error::UnsupportedCipher(ref u) => {
write!(f, "Unsupported cipher (UUID: {})", u.hex_dump())
}
Error::UnsupportedKdf(ref u) => write!(f, "Unsupported KDF (UUID: {})", u.hex_dump()),
Error::UnsupportedStreamCipher(ref u) => {
write!(f, "Unsupported stream cipher (UUID: {})", u.hex_dump())
}
Error::Decryption => write!(f, "Unable to decrypt database"),
Error::XmlParse => write!(f, "Unable to parse XML"),
Error::BadFormat => write!(f, "Unsupported database file format"),
Error::CorruptedFile => write!(f, "Database file corrupted or wrong key"),
Error::Io(ref e) => e.fmt(f),
Error::Other(ref s) => f.write_str(&**s),
}
}
}