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use std::fmt;
use nom::bits::{bits, streaming};
use nom::error::{Error, ErrorKind};
use nom::number::streaming::be_u8;
use nom::IResult;
#[cfg(feature = "serde")]
use serde::{Deserialize, Serialize};
const OPTIONS_HEADER: u8 = 0x83;
#[derive(Clone, PartialEq, Eq)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub enum MobileIDType {
Off,
Esn,
Equipment,
Subscriber,
Defined,
PhoneNumber,
IpAddress,
Cdma,
}
impl MobileIDType {
pub fn parse(input: &[u8]) -> IResult<&[u8], MobileIDType> {
let (i, _): (&[u8], u8) = be_u8::<_, (_, ErrorKind)>(input).unwrap();
let (i, b): (&[u8], u8) = be_u8::<_, (_, ErrorKind)>(i).unwrap();
match b {
0 => Ok((i, MobileIDType::Off)),
1 => Ok((i, MobileIDType::Esn)),
2 => Ok((i, MobileIDType::Equipment)),
3 => Ok((i, MobileIDType::Subscriber)),
4 => Ok((i, MobileIDType::Defined)),
5 => Ok((i, MobileIDType::PhoneNumber)),
6 => Ok((i, MobileIDType::IpAddress)),
7 => Ok((i, MobileIDType::Cdma)),
_ => panic!("not found"),
}
}
}
impl fmt::Display for MobileIDType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
MobileIDType::Off => write!(f, "MobileIDType::Off"),
MobileIDType::Esn => write!(f, "MobileIDType::Esn"),
MobileIDType::Equipment => write!(f, "MobileIDType::Equipament"),
MobileIDType::Subscriber => write!(f, "MobileIDType::Subscriber"),
MobileIDType::Defined => write!(f, "MobileIDType::Defined"),
MobileIDType::PhoneNumber => write!(f, "MobileIDType::PhoneNumber"),
MobileIDType::IpAddress => write!(f, "MobileIDType::IpAddress"),
MobileIDType::Cdma => write!(f, "MobileIDType::Cdma"),
}
}
}
impl fmt::Debug for MobileIDType {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match *self {
MobileIDType::Off => write!(f, "MobileIDType::Off"),
MobileIDType::Esn => write!(f, "MobileIDType::Esn"),
MobileIDType::Equipment => write!(f, "MobileIDType::Equipament"),
MobileIDType::Subscriber => write!(f, "MobileIDType::Subscriber"),
MobileIDType::Defined => write!(f, "MobileIDType::Defined"),
MobileIDType::PhoneNumber => write!(f, "MobileIDType::PhoneNumber"),
MobileIDType::IpAddress => write!(f, "MobileIDType::IpAddress"),
MobileIDType::Cdma => write!(f, "MobileIDType::Cdma"),
}
}
}
#[derive(Debug)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct MobileID(pub String);
impl MobileID {
pub fn len(&self) -> usize {
self.0.len()
}
pub fn parse(input: &[u8]) -> IResult<&[u8], Self> {
let (i, a): (&[u8], u8) = be_u8::<_, (_, ErrorKind)>(input).unwrap();
let (i, b): (&[u8], &[u8]) = nom::bytes::streaming::take(a)(i)?;
let mut id = String::from("");
for d in b.iter() {
id.push_str(&format!("{0:2x}", d))
}
Ok((i, Self(id)))
}
pub fn is_empty(&self) -> bool {
self.len() == 0
}
}
#[derive(Debug)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct OptionsStatus {
pub is_mobile_id: bool,
pub is_mobile_id_type: bool,
pub is_authentication_world: bool,
pub is_routing: bool,
pub is_forwarding: bool,
pub is_response_redirection: bool,
pub is_options_extension: bool,
pub is_always_set: bool,
}
impl OptionsStatus {
pub fn is_mobile_id(&self) -> bool {
self.is_mobile_id
}
pub fn is_mobile_id_type(&self) -> bool {
self.is_mobile_id_type
}
pub fn is_authentication_world(&self) -> bool {
self.is_authentication_world
}
pub fn is_routing(&self) -> bool {
self.is_routing
}
pub fn is_forwarding(&self) -> bool {
self.is_forwarding
}
pub fn is_response_redirection(&self) -> bool {
self.is_response_redirection
}
pub fn is_options_extension(&self) -> bool {
self.is_options_extension
}
pub fn is_always_set(&self) -> bool {
self.is_always_set
}
}
fn is_options_header(input: u8) -> bool {
input == OPTIONS_HEADER
}
#[derive(Debug)]
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
pub struct OptionsHeader {
pub mobile_id: Option<MobileID>,
pub mobile_id_type: Option<MobileIDType>,
pub authentication_world: Option<bool>,
pub routing: Option<bool>,
pub forwarding: Option<bool>,
pub response_redirection: Option<bool>,
pub options_extension: Option<bool>,
}
impl OptionsHeader {
pub fn parse(input: &[u8]) -> IResult<&[u8], Option<Self>> {
if !is_options_header(input[0]) {
panic!("");
}
let (i, opt_status) = parse_options_status(input)?;
let mut opt_header = OptionsHeader {
mobile_id: None,
mobile_id_type: None,
authentication_world: None,
routing: None,
forwarding: None,
response_redirection: None,
options_extension: None,
};
let mut inp: &[u8] = &[];
if opt_status.is_mobile_id() {
let (i, mob_id) = MobileID::parse(i)?;
opt_header.mobile_id = Some(mob_id);
inp = i;
}
if opt_status.is_mobile_id_type() {
let (i, mob_id_tp) = MobileIDType::parse(inp)?;
opt_header.mobile_id_type = Some(mob_id_tp);
inp = i;
}
if opt_status.is_authentication_world() {
unimplemented!()
}
if opt_status.is_routing() {
unimplemented!()
}
if opt_status.is_forwarding() {
unimplemented!()
}
if opt_status.is_response_redirection() {
unimplemented!()
}
if opt_status.is_options_extension() {
unimplemented!()
}
Ok((inp, Some(opt_header)))
}
}
fn parse_options_status(input: &[u8]) -> IResult<&[u8], OptionsStatus> {
#[allow(clippy::type_complexity)]
let (i, b): (&[u8], (u8, u8, u8, u8, u8, u8, u8, u8)) =
bits::<_, _, Error<(&[u8], usize)>, _, _>(nom::sequence::tuple((
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
streaming::take(1u8),
)))(input)?;
Ok((
i,
OptionsStatus {
is_mobile_id: b.7 == 1,
is_mobile_id_type: b.6 == 1,
is_authentication_world: b.5 == 1,
is_routing: b.4 == 1,
is_forwarding: b.3 == 1,
is_response_redirection: b.2 == 1,
is_options_extension: b.1 == 1,
is_always_set: b.0 == 1,
},
))
}
#[cfg(test)]
mod tests {
use super::{MobileIDType, OptionsHeader};
#[test]
fn test_parse_options_headers() {
let data: [u8; 117] = [
0x83, 0x05, 0x46, 0x34, 0x66, 0x32, 0x35, 0x01, 0x01, 0x01, 0x02,
0x3a, 0x86, 0x5f, 0xf1, 0x3a, 0x54, 0x5f, 0xf1, 0x3a, 0x57, 0xf1,
0xe2, 0x85, 0x78, 0xe4, 0x22, 0xd6, 0x40, 0x00, 0x01, 0x36, 0xf8,
0x00, 0x00, 0x00, 0x0b, 0x00, 0x00, 0x06, 0x20, 0x00, 0x00, 0xff,
0x8d, 0x02, 0x1e, 0x1e, 0x00, 0x7b, 0x21, 0x10, 0x00, 0x00, 0x00,
0x31, 0xe0, 0x00, 0x00, 0x10, 0x1a, 0x00, 0x00, 0x00, 0x00, 0x00,
0x22, 0x2a, 0x32, 0x00, 0x00, 0x03, 0xf1, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x01, 0xc8, 0x2d, 0x3f, 0x01, 0xc8, 0x2d,
0x3f, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x01, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
];
let (i, opt_header) = OptionsHeader::parse(&data).unwrap();
match opt_header {
Some(opt_h) => {
assert_eq!(i.len(), 108);
if let Some(mob_id) = opt_h.mobile_id {
assert_eq!(mob_id.len(), 10);
assert_eq!(mob_id.0, String::from("4634663235"));
}
if let Some(mob_id_tp) = opt_h.mobile_id_type {
assert_eq!(mob_id_tp, MobileIDType::Esn);
assert_eq!(
format!("{}", mob_id_tp),
String::from("MobileIDType::Esn")
);
}
}
None => (),
}
}
}