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Fix ping crash on Enimga2 linux distribution (mipsle) #3877

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merged 3 commits into from
May 1, 2018
Merged

Fix ping crash on Enimga2 linux distribution (mipsle) #3877

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36354c6
Fix ping crash on BusyBox linux distribution (Enigma2 mipsle)
Mar 9, 2018
2852757
Change default PingInterval to 1.0
Apr 17, 2018
bc8d684
Merge remote-tracking branch 'remotes/upstream/master' into enigma2_ping
Apr 17, 2018
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23 changes: 13 additions & 10 deletions plugins/inputs/ping/ping.go
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Original file line number Diff line number Diff line change
Expand Up @@ -171,17 +171,17 @@ func (p *Ping) args(url string) []string {
// Build the ping command args based on toml config
args := []string{"-c", strconv.Itoa(p.Count), "-n", "-s", "16"}
if p.PingInterval > 0 {
args = append(args, "-i", strconv.FormatFloat(p.PingInterval, 'f', 1, 64))
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I think we can just change this to use the -1 precision:

args = append(args, "-i", strconv.FormatFloat(p.PingInterval, 'f', -1, 64))

It still will require users to specify an even value, but I think it is better than switching on arch.

args = append(args, "-i", strconv.FormatFloat(p.PingInterval, 'f', -1, 64))
}
if p.Timeout > 0 {
switch runtime.GOOS {
case "darwin":
args = append(args, "-W", strconv.FormatFloat(p.Timeout*1000, 'f', 1, 64))
args = append(args, "-W", strconv.FormatFloat(p.Timeout*1000, 'f', -1, 64))
case "linux":
args = append(args, "-W", strconv.FormatFloat(p.Timeout, 'f', 1, 64))
args = append(args, "-W", strconv.FormatFloat(p.Timeout, 'f', -1, 64))
default:
// Not sure the best option here, just assume GNU ping?
args = append(args, "-W", strconv.FormatFloat(p.Timeout, 'f', 1, 64))
args = append(args, "-W", strconv.FormatFloat(p.Timeout, 'f', -1, 64))
}
}
if p.Deadline > 0 {
Expand Down Expand Up @@ -243,21 +243,24 @@ func processPingOutput(out string) (int, int, float64, float64, float64, float64
}
} else if strings.Contains(line, "min/avg/max") {
stats := strings.Split(line, " ")[3]
min, err = strconv.ParseFloat(strings.Split(stats, "/")[0], 64)
data := strings.Split(stats, "/")
min, err = strconv.ParseFloat(data[0], 64)
if err != nil {
return trans, recv, min, avg, max, stddev, err
}
avg, err = strconv.ParseFloat(strings.Split(stats, "/")[1], 64)
avg, err = strconv.ParseFloat(data[1], 64)
if err != nil {
return trans, recv, min, avg, max, stddev, err
}
max, err = strconv.ParseFloat(strings.Split(stats, "/")[2], 64)
max, err = strconv.ParseFloat(data[2], 64)
if err != nil {
return trans, recv, min, avg, max, stddev, err
}
stddev, err = strconv.ParseFloat(strings.Split(stats, "/")[3], 64)
if err != nil {
return trans, recv, min, avg, max, stddev, err
if len(data) == 4 {
stddev, err = strconv.ParseFloat(data[3], 64)
if err != nil {
return trans, recv, min, avg, max, stddev, err
}
}
}
}
Expand Down
28 changes: 25 additions & 3 deletions plugins/inputs/ping/ping_test.go
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Original file line number Diff line number Diff line change
Expand Up @@ -41,6 +41,19 @@ PING www.google.com (216.58.218.164) 56(84) bytes of data.
rtt min/avg/max/mdev = 35.225/43.628/51.806/5.325 ms
`

// BusyBox v1.24.1 (2017-02-28 03:28:13 CET) multi-call binary
var busyBoxPingOutput = `
PING 8.8.8.8 (8.8.8.8): 56 data bytes
64 bytes from 8.8.8.8: seq=0 ttl=56 time=22.559 ms
64 bytes from 8.8.8.8: seq=1 ttl=56 time=15.810 ms
64 bytes from 8.8.8.8: seq=2 ttl=56 time=16.262 ms
64 bytes from 8.8.8.8: seq=3 ttl=56 time=15.815 ms

--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 packets received, 0% packet loss
round-trip min/avg/max = 15.810/17.611/22.559 ms
`

// Fatal ping output (invalid argument)
var fatalPingOutput = `
ping: -i interval too short: Operation not permitted
Expand All @@ -65,6 +78,15 @@ func TestProcessPingOutput(t *testing.T) {
assert.InDelta(t, 43.628, avg, 0.001)
assert.InDelta(t, 51.806, max, 0.001)
assert.InDelta(t, 5.325, stddev, 0.001)

trans, rec, min, avg, max, stddev, err = processPingOutput(busyBoxPingOutput)
assert.NoError(t, err)
assert.Equal(t, 4, trans, "4 packets were transmitted")
assert.Equal(t, 4, rec, "4 packets were transmitted")
assert.InDelta(t, 15.810, min, 0.001)
assert.InDelta(t, 17.611, avg, 0.001)
assert.InDelta(t, 22.559, max, 0.001)
assert.InDelta(t, -1.0, stddev, 0.001)
}

// Test that processPingOutput returns an error when 'ping' fails to run, such
Expand Down Expand Up @@ -106,7 +128,7 @@ func TestArgs(t *testing.T) {
"12000.0", "www.google.com"}
default:
expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W",
"12.0", "www.google.com"}
"12", "www.google.com"}
}

p.Deadline = 24
Expand All @@ -117,7 +139,7 @@ func TestArgs(t *testing.T) {
"12000.0", "-t", "24", "www.google.com"}
default:
expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W",
"12.0", "-w", "24", "www.google.com"}
"12", "-w", "24", "www.google.com"}
}

sort.Strings(actual)
Expand All @@ -133,7 +155,7 @@ func TestArgs(t *testing.T) {
"12000.0", "-t", "24", "-i", "1.2", "www.google.com"}
default:
expected = []string{"-c", "2", "-n", "-s", "16", "-I", "eth0", "-W",
"12.0", "-w", "24", "-i", "1.2", "www.google.com"}
"12", "-w", "24", "-i", "1.2", "www.google.com"}
}
sort.Strings(actual)
sort.Strings(expected)
Expand Down