mirror of
https://github.com/wader/fq.git
synced 2024-12-25 22:34:14 +03:00
2fc0a71a47
Move scalar into own package. Split scalar code into decode related scalar code (that reads etc) and scalar code that just transform the scalar value. Use a scalar.Mapper interface instead of just a function. Make mappers, assert and validat impement the interface.
102 lines
4.0 KiB
Go
102 lines
4.0 KiB
Go
package inet
|
|
|
|
import (
|
|
"github.com/wader/fq/format"
|
|
"github.com/wader/fq/format/registry"
|
|
"github.com/wader/fq/pkg/decode"
|
|
"github.com/wader/fq/pkg/scalar"
|
|
)
|
|
|
|
func init() {
|
|
registry.MustRegister(decode.Format{
|
|
Name: format.ICMP,
|
|
Description: "Internet Control Message Protocol",
|
|
DecodeFn: decodeICMP,
|
|
})
|
|
}
|
|
|
|
// based on https://en.wikipedia.org/wiki/Internet_Control_Message_Protocol
|
|
var icmpTypeMap = scalar.UToScalar{
|
|
0: {Sym: "echo_reply", Description: "Echo reply"},
|
|
3: {Sym: "unreachable", Description: "Destination network unreachable"},
|
|
4: {Sym: "source_quench", Description: "Source quench (congestion control)"},
|
|
5: {Sym: "redirect", Description: "Redirect Datagram for the Network"},
|
|
6: {Description: "Alternate Host Address"},
|
|
8: {Sym: "echo_request", Description: "Echo request"},
|
|
9: {Sym: "router_advertisement", Description: "Router Advertisement"},
|
|
10: {Sym: "router_solicitation", Description: "Router discovery/selection/solicitation"},
|
|
11: {Sym: "time_exceeded", Description: "TTL expired in transit"},
|
|
12: {Sym: "parameter_problem", Description: "Pointer indicates the error"},
|
|
13: {Sym: "timestamp", Description: "Timestamp"},
|
|
14: {Sym: "timestamp_reply", Description: "Timestamp reply"},
|
|
15: {Sym: "information_request", Description: "Information Request"},
|
|
16: {Sym: "information_reply", Description: "Information Reply"},
|
|
17: {Sym: "address_mask_request", Description: "Address Mask Request"},
|
|
18: {Sym: "address_mask_reply", Description: "Address Mask Reply"},
|
|
30: {Sym: "traceroute", Description: "Information Request"},
|
|
31: {Description: "Datagram Conversion Error"},
|
|
32: {Description: "Mobile Host Redirect"},
|
|
33: {Description: "Where-Are-You (originally meant for IPv6)"},
|
|
34: {Description: "Here-I-Am (originally meant for IPv6)"},
|
|
35: {Description: "Mobile Registration Request"},
|
|
36: {Description: "Mobile Registration Reply"},
|
|
37: {Description: "Domain Name Request"},
|
|
38: {Description: "Domain Name Reply"},
|
|
39: {Description: "Simple Key-Management for Internet Protocol"},
|
|
40: {Sym: "photuris"},
|
|
41: {Description: "Experimental icmp for experimental mobility protocols"},
|
|
42: {Sym: "extended_echo_request", Description: "Request Extended Echo"},
|
|
43: {Sym: "extended_echo_reply", Description: "No Error"},
|
|
}
|
|
|
|
var icmpCodeMapMap = map[uint64]scalar.UToScalar{
|
|
3: {
|
|
1: {Description: "Destination host unreachable"},
|
|
2: {Description: "Destination protocol unreachable"},
|
|
3: {Description: "Destination port unreachable"},
|
|
4: {Description: "Fragmentation required, and DF flag set"},
|
|
5: {Description: "Source route failed"},
|
|
6: {Description: "Destination network unknown"},
|
|
7: {Description: "Destination host unknown"},
|
|
8: {Description: "Source host isolated"},
|
|
9: {Description: "Network administratively prohibited"},
|
|
10: {Description: "Host administratively prohibited"},
|
|
11: {Description: "Network unreachable for ToS"},
|
|
12: {Description: "Host unreachable for ToS"},
|
|
13: {Description: "Communication administratively prohibited"},
|
|
14: {Description: "Host Precedence Violation"},
|
|
15: {Description: "Precedence cutoff in effect"},
|
|
},
|
|
5: {
|
|
0: {Description: "Redirect Datagram for the Network"},
|
|
1: {Description: "Redirect Datagram for the Host"},
|
|
2: {Description: "Redirect Datagram for the ToS & network"},
|
|
3: {Description: "Redirect Datagram for the ToS & host"},
|
|
},
|
|
11: {
|
|
0: {Description: "TTL expired in transit"},
|
|
1: {Description: "Fragment reassembly time exceeded"},
|
|
},
|
|
12: {
|
|
0: {Description: "Pointer indicates the error"},
|
|
1: {Description: "Missing a required option"},
|
|
2: {Description: "Bad length"},
|
|
},
|
|
43: {
|
|
0: {Description: "No Error"},
|
|
1: {Description: "Malformed Query"},
|
|
2: {Description: "No Such Interface"},
|
|
3: {Description: "No Such Table Entry"},
|
|
4: {Description: "Multiple Interfaces Satisfy Query"},
|
|
},
|
|
}
|
|
|
|
func decodeICMP(d *decode.D, in interface{}) interface{} {
|
|
typ := d.FieldU8("type", icmpTypeMap)
|
|
d.FieldU8("code", icmpCodeMapMap[typ])
|
|
d.FieldU16("checksum")
|
|
d.FieldRawLen("content", d.BitsLeft())
|
|
|
|
return nil
|
|
}
|