103 lines
2.2 KiB
Rust
103 lines
2.2 KiB
Rust
#[doc="
|
|
Types/fns concerning Internet Protocol (IP), versions 4 & 6
|
|
"];
|
|
|
|
import vec;
|
|
import uint;
|
|
|
|
export ip_addr, parse_addr_err;
|
|
export format_addr;
|
|
export v4;
|
|
|
|
#[doc = "An IP address"]
|
|
enum ip_addr {
|
|
#[doc="An IPv4 address"]
|
|
ipv4(u8, u8, u8, u8),
|
|
ipv6(u16,u16,u16,u16,u16,u16,u16,u16)
|
|
}
|
|
|
|
#[doc="
|
|
Human-friendly feedback on why a parse_addr attempt failed
|
|
"]
|
|
type parse_addr_err = {
|
|
err_msg: str
|
|
};
|
|
|
|
#[doc="
|
|
Convert a `ip_addr` to a str
|
|
|
|
# Arguments
|
|
|
|
* ip - a `std::net::ip::ip_addr`
|
|
"]
|
|
fn format_addr(ip: ip_addr) -> str {
|
|
alt ip {
|
|
ipv4(a, b, c, d) {
|
|
#fmt["%u.%u.%u.%u", a as uint, b as uint, c as uint, d as uint]
|
|
}
|
|
ipv6(_, _, _, _, _, _, _, _) {
|
|
fail "FIXME (#2651) impl parsing of ipv6 addr";
|
|
}
|
|
}
|
|
}
|
|
|
|
mod v4 {
|
|
#[doc = "
|
|
Convert a str to `ip_addr`
|
|
|
|
# Failure
|
|
|
|
j Fails if the string is not a valid IPv4 address
|
|
|
|
# Arguments
|
|
|
|
* ip - a string of the format `x.x.x.x`
|
|
|
|
# Returns
|
|
|
|
* an `ip_addr` of the `ipv4` variant
|
|
"]
|
|
fn parse_addr(ip: str) -> ip_addr {
|
|
alt try_parse_addr(ip) {
|
|
result::ok(addr) { addr }
|
|
result::err(err_data) {
|
|
fail err_data.err_msg
|
|
}
|
|
}
|
|
}
|
|
fn try_parse_addr(ip: str) -> result::result<ip_addr,parse_addr_err> {
|
|
let parts = vec::map(str::split_char(ip, '.'), {|s|
|
|
alt uint::from_str(s) {
|
|
some(n) if n <= 255u { n }
|
|
_ { 256u }
|
|
}
|
|
});
|
|
if vec::len(parts) != 4u {
|
|
result::err({err_msg: #fmt("'%s' doesn't have 4 parts",
|
|
ip)})
|
|
}
|
|
else if vec::contains(parts, 256u) {
|
|
result::err({err_msg: #fmt("invalid octal in provided addr '%s'",
|
|
ip)})
|
|
}
|
|
else {
|
|
result::ok(ipv4(parts[0] as u8, parts[1] as u8,
|
|
parts[2] as u8, parts[3] as u8))
|
|
}
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod test {
|
|
#[test]
|
|
fn test_format_ip() {
|
|
assert (format_addr(ipv4(127u8, 0u8, 0u8, 1u8))
|
|
== "127.0.0.1")
|
|
}
|
|
|
|
#[test]
|
|
fn test_parse_ip() {
|
|
assert (v4::parse_addr("127.0.0.1") ==
|
|
ipv4(127u8, 0u8, 0u8, 1u8));
|
|
}
|
|
} |