415 lines
14 KiB
Rust
415 lines
14 KiB
Rust
pub mod icmp;
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum Kind {
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/// ping应答，type=0
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Identifier | Sequence Number |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Data ...
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+-+-+-+-+-
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*/
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EchoReply,
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/// 目的地不可达，差错报文的一种，路由器收到一个不能转发的数据报，会向源地址返回这个报文，type=3
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| unused |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Internet Header + 64 bits of Original Data Datagram |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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DestinationUnreachable,
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/// 源抑制报文，用于防止接收端缓存溢出，接收设备发送这个来请求源设备降低发送速度，type=4
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| unused |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Internet Header + 64 bits of Original Data Datagram |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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SourceQuench,
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/// 重定向报文，当路由器接收包的接口正好是去往目的地的出口时，会向源地址发送重定向报文，告知源直接将数据发往自己的下一跳，type=5
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Gateway Internet Address |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Internet Header + 64 bits of Original Data Datagram |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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Redirect,
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/// ping请求，type=8
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EchoRequest,
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/// 路由器通告,type=9,
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RouterAdvertisement,
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/// 路由器请求,type=10
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RouterSolicitation,
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/// 报文ttl为0后，路由器会向源发送此报文，type=11
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/// Tracert工作原理：
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/// 首先向目的地发送ttl=1的包，下一跳路由器收到后ttl-1，此时ttl=0，将向源发送 ICMP time exceeded
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/// 再发送ttl=2的包，以此类推，直到目标主机接收到改包，此时不会回复ICMP time exceeded，代表已经探测到目的地
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| unused |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Internet Header + 64 bits of Original Data Datagram |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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TimeExceeded,
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/// 参数错误，数据有误、校验和不对等，type=12
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Pointer | unused |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Internet Header + 64 bits of Original Data Datagram |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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注：Pointer指示错误的位置
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*/
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ParameterProblem,
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/// 时间戳请求,type=13
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Identifier | Sequence Number |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Originate Timestamp |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Receive Timestamp |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Transmit Timestamp |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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TimestampRequest,
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/// 时间戳响应,type=14
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TimestampReply,
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/// 信息请求，type=15
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/*
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0 1 2 3
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0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Type | Code | Checksum |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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| Identifier | Sequence Number |
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+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
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*/
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InformationRequest,
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/// 信息响应，type=16
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InformationReply,
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/// 地址掩码请求，type=17
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AddressMaskRequest,
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/// 地址掩码应答，type=18
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AddressMaskReply,
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///
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TraceRoute,
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///
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Unknown(u8),
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}
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impl From<u8> for Kind {
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fn from(value: u8) -> Kind {
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use self::Kind::*;
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match value {
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0 => EchoReply,
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3 => DestinationUnreachable,
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4 => SourceQuench,
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5 => Redirect,
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8 => EchoRequest,
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9 => RouterAdvertisement,
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10 => RouterSolicitation,
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11 => TimeExceeded,
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12 => ParameterProblem,
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13 => TimestampRequest,
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14 => TimestampReply,
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15 => InformationRequest,
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16 => InformationReply,
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17 => AddressMaskRequest,
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18 => AddressMaskReply,
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30 => TraceRoute,
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v => Unknown(v),
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}
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}
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}
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impl Into<u8> for Kind {
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fn into(self) -> u8 {
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use self::Kind::*;
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match self {
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EchoReply => 0,
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DestinationUnreachable => 3,
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SourceQuench => 4,
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Redirect => 5,
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EchoRequest => 8,
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RouterAdvertisement => 9,
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RouterSolicitation => 10,
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TimeExceeded => 11,
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ParameterProblem => 12,
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TimestampRequest => 13,
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TimestampReply => 14,
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InformationRequest => 15,
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InformationReply => 16,
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AddressMaskRequest => 17,
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AddressMaskReply => 18,
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TraceRoute => 30,
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Unknown(v) => v,
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}
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}
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}
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum Code {
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DestinationUnreachable(DestinationUnreachable),
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Redirect(Redirect),
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ParameterProblem(ParameterProblem),
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Other(u8),
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}
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impl Code {
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pub fn from(kind: Kind, code: u8) -> Code {
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match kind {
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Kind::DestinationUnreachable => {
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Code::DestinationUnreachable(DestinationUnreachable::from(code))
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}
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Kind::Redirect => Code::Redirect(Redirect::from(code)),
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Kind::ParameterProblem => Code::ParameterProblem(ParameterProblem::from(code)),
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_ => Code::Other(code),
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}
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}
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}
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum DestinationUnreachable {
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/// 网络不可达
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DestinationNetworkUnreachable,
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/// 主机不可达
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DestinationHostUnreachable,
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/// 协议不可达
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DestinationProtocolUnreachable,
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/// 端口不可达
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DestinationPortUnreachable,
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/// 需要进行分片但设置不分片比特
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FragmentationRequired,
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/// 源站选路失败
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SourceRouteFailed,
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/// 目的网络未知
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DestinationNetworkUnknown,
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/// 目的主机未知
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DestinationHostUnknown,
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/// 源主机被隔离（作废不用）
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SourceHostIsolated,
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/// 目的网络被强制禁止
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NetworkAdministrativelyProhibited,
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/// 目的主机被强制禁止
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HostAdministrativelyProhibited,
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/// 由于服务类型TOS，网络不可达
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NetworkUnreachableForTos,
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/// 由于服务类型TOS，主机不可达
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HostUnreachableForTos,
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/// 由于过滤，通信被强制禁止
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CommunicationAdministrativelyProhibited,
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/// 主机越权
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HostPrecedenceViolation,
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/// 优先中止生效
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PrecedentCutoffInEffect,
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///
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Unknown(u8),
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}
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/// Codes for Redirect Message packets.
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum Redirect {
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/// 对网络重定向
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RedirectDatagramForNetwork,
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/// 对主机重定向
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RedirectDatagramForHost,
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/// 对服务类型和网络重定向
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RedirectDatagramForTosAndNetwork,
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/// 对服务类型和主机重定向
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RedirectDatagramForTosAndHost,
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///
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Unknown(u8),
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}
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/// Codes for TimeExceeded Message packets.
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum TimeExceeded {
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/// TTL超时报文
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Transit,
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/// 分片重组超时报文
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Reassembly,
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///
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Unknown(u8),
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}
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/// Codes for Parameter Problem packets.
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#[derive(Eq, PartialEq, Copy, Clone, Debug)]
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pub enum ParameterProblem {
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/// 坏的IP首部（包括各种差错）
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PointerIndicatesError,
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/// 缺少必需的选项
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MissingRequiredData,
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/// 长度错误
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BadLength,
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///
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Unknown(u8),
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}
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impl From<u8> for DestinationUnreachable {
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fn from(value: u8) -> Self {
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use self::DestinationUnreachable::*;
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match value {
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0 => DestinationNetworkUnreachable,
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1 => DestinationHostUnreachable,
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2 => DestinationProtocolUnreachable,
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3 => DestinationPortUnreachable,
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4 => FragmentationRequired,
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5 => SourceRouteFailed,
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6 => DestinationNetworkUnknown,
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7 => DestinationHostUnknown,
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8 => SourceHostIsolated,
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9 => NetworkAdministrativelyProhibited,
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10 => HostAdministrativelyProhibited,
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11 => NetworkUnreachableForTos,
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12 => HostUnreachableForTos,
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13 => CommunicationAdministrativelyProhibited,
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14 => HostPrecedenceViolation,
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15 => PrecedentCutoffInEffect,
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v => Unknown(v),
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}
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}
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}
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impl Into<u8> for DestinationUnreachable {
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fn into(self) -> u8 {
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use self::DestinationUnreachable::*;
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match self {
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DestinationNetworkUnreachable => 0,
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DestinationHostUnreachable => 1,
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DestinationProtocolUnreachable => 2,
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DestinationPortUnreachable => 3,
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FragmentationRequired => 4,
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SourceRouteFailed => 5,
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DestinationNetworkUnknown => 6,
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DestinationHostUnknown => 7,
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SourceHostIsolated => 8,
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NetworkAdministrativelyProhibited => 9,
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HostAdministrativelyProhibited => 10,
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NetworkUnreachableForTos => 11,
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HostUnreachableForTos => 12,
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CommunicationAdministrativelyProhibited => 13,
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HostPrecedenceViolation => 14,
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PrecedentCutoffInEffect => 15,
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Unknown(v) => v,
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}
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}
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}
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impl From<u8> for Redirect {
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fn from(value: u8) -> Self {
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use self::Redirect::*;
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match value {
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0 => RedirectDatagramForNetwork,
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1 => RedirectDatagramForHost,
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2 => RedirectDatagramForTosAndNetwork,
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3 => RedirectDatagramForTosAndHost,
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v => Unknown(v),
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}
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}
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}
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impl Into<u8> for Redirect {
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fn into(self) -> u8 {
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use self::Redirect::*;
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match self {
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RedirectDatagramForNetwork => 0,
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RedirectDatagramForHost => 1,
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RedirectDatagramForTosAndNetwork => 2,
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RedirectDatagramForTosAndHost => 3,
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Unknown(v) => v,
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}
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}
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}
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impl From<u8> for TimeExceeded {
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fn from(value: u8) -> Self {
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use self::TimeExceeded::*;
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match value {
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0 => Transit,
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1 => Reassembly,
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v => Unknown(v),
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}
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}
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}
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impl Into<u8> for TimeExceeded {
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fn into(self) -> u8 {
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use self::TimeExceeded::*;
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match self {
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Transit => 0,
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Reassembly => 1,
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Unknown(v) => v,
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}
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}
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}
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impl From<u8> for ParameterProblem {
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fn from(value: u8) -> Self {
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use self::ParameterProblem::*;
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match value {
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0 => PointerIndicatesError,
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1 => MissingRequiredData,
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2 => BadLength,
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v => Unknown(v),
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}
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}
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}
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impl Into<u8> for ParameterProblem {
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fn into(self) -> u8 {
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use self::ParameterProblem::*;
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match self {
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PointerIndicatesError => 0,
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MissingRequiredData => 1,
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BadLength => 2,
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Unknown(v) => v,
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}
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}
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}
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