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Replace arp from net-tools by ip from iproute2 (linux)

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This commit is contained in:
Daniel Rodriguez 2018-01-20 17:04:21 +01:00
parent 3cc5faa297
commit c55284429e
3 changed files with 12 additions and 6 deletions
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3
net/arp_parser_darwin.go
View file

@ -4,3 +4,6 @@ import "regexp"
var ArpTableParser = regexp.MustCompile("^[^\\d\\.]+([\\d\\.]+).+\\s+([a-f0-9:]{11,17})\\s+on\\s+([^\\s]+)\\s+.+$")
var ArpTableTokens = 4
var ArpTableTokenIndex = []uint{1, 2, 3}
var ArpCmd = "arp"
var ArpCmdOpts = []string{"-a", "-n"}

5
net/arp_parser_linux.go
View file

@ -2,5 +2,8 @@ package net
import "regexp"
var ArpTableParser = regexp.MustCompile("^[^\\d\\.]+([\\d\\.]+).+\\s+([a-f0-9:]{17}).+\\s+(.+)$")
var ArpTableParser = regexp.MustCompile("^([\\d\\.]+)\\s+dev\\s+(\\w+)\\s+\\w+\\s+([a-f0-9:]{17})\\s+\\w+$")
var ArpTableTokens = 4
var ArpTableTokenIndex = []uint{1, 3, 2}
var ArpCmd = "ip"
var ArpCmdOpts = []string{"neigh"}

10
net/arp_unix.go
View file

@ -12,8 +12,8 @@ func ArpUpdate(iface string) (ArpTable, error) {
// Signal we parsed the ARP table at least once.
arp_parsed = true
// Run "arp -an" and parse the output.
output, err := core.Exec("arp", []string{"-a", "-n"})
// Run "arp -an" (darwin) or "ip neigh" (linux) and parse the output
output, err := core.Exec(ArpCmd, ArpCmdOpts)
if err != nil {
return arp_table, err
}
@ -22,9 +22,9 @@ func ArpUpdate(iface string) (ArpTable, error) {
for _, line := range strings.Split(output, "\n") {
m := ArpTableParser.FindStringSubmatch(line)
if len(m) == ArpTableTokens {
address := m[1]
mac := m[2]
ifname := m[3]
address := m[ArpTableTokenIndex[0]]
mac := m[ArpTableTokenIndex[1]]
ifname := m[ArpTableTokenIndex[2]]
if ifname == iface {
new_table[address] = mac