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.env
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mondash-checkgpg
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202
LICENSE
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LICENSE
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Apache License
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Copyright 2020- Knut Ahlers <knut@ahlers.me>
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29
README.md
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29
README.md
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@ -0,0 +1,29 @@
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[](https://goreportcard.com/report/github.com/Luzifer/mondash-checkgpg)
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||||||
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||||||
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|
||||||
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|
||||||
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||||||
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||||||
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# Luzifer / mondash-checkgpg
|
||||||
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|
||||||
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`mondash-checkgpg` is intended to watch over GPG keys uploaded to a keyserver and inform about their expiry using a [MonDash](https://mondash.org/) dashboard.
|
||||||
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|
||||||
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## Usage
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||||||
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|
||||||
|
```console
|
||||||
|
# ./mondash-checkgpg --help
|
||||||
|
Usage of ./mondash-checkgpg:
|
||||||
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-c, --crit-at duration Switch state to critical if key expires within X (default 168h0m0s)
|
||||||
|
-k, --key strings List of keys to check
|
||||||
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--key-server string Lookup path to retrieve the key from (default "http://keyserver.ubuntu.com/pks/lookup")
|
||||||
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--log-level string Log level (debug, info, warn, error, fatal) (default "info")
|
||||||
|
--mondash-board string ID of the Mondash board to send to
|
||||||
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--mondash-metric string ID of the metric to submit to (default "checkgpg")
|
||||||
|
--mondash-metric-expiry duration Time in seconds when to remove the metric if there is no update (default 168h0m0s)
|
||||||
|
--mondash-metric-freshness duration Time in seconds when to switch to stale state of there is no update (default 168h0m0s)
|
||||||
|
--mondash-token string Token with write access to the board
|
||||||
|
--version Prints current version and exits
|
||||||
|
-w, --warn-at duration Switch state to warning if key expires within X (default 336h0m0s)
|
||||||
|
|
||||||
|
# ./mondash-checkgpg --mondash-board <boardid> --mondash-token <token> --key 0x43A4CD1C19DAE8558D40088E0066F03ED215AD7D
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```
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11
go.mod
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11
go.mod
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module github.com/Luzifer/mondash-checkgpg
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go 1.15
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||||||
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|
||||||
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require (
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github.com/Luzifer/mondash v2.2.3+incompatible
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||||||
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github.com/Luzifer/rconfig/v2 v2.2.1
|
||||||
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github.com/pkg/errors v0.9.1
|
||||||
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github.com/sirupsen/logrus v1.7.0
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||||||
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golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee
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)
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go.sum
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go.sum
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github.com/Luzifer/mondash v1.14.2 h1:q4rX5PsVdzESwpT05d3Sc5qi+EyL3kYsw29CmhH2Jks=
|
||||||
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github.com/Luzifer/mondash v2.2.3+incompatible h1:zzI7MX4gHnWg1A+zAkfpOUV3wqZhtlLyctxNSfL18sI=
|
||||||
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github.com/Luzifer/mondash v2.2.3+incompatible/go.mod h1:lUN6Mag+P6SgIn9YK3WJoRW5l2AWX7Qcs5XZ1Tt1HBo=
|
||||||
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github.com/Luzifer/rconfig v1.2.0 h1:waD1sqasGVSQSrExpLrQ9Q1JmMaltrS391VdOjWXP/I=
|
||||||
|
github.com/Luzifer/rconfig/v2 v2.2.1 h1:zcDdLQlnlzwcBJ8E0WFzOkQE1pCMn3EbX0dFYkeTczg=
|
||||||
|
github.com/Luzifer/rconfig/v2 v2.2.1/go.mod h1:OKIX0/JRZrPJ/ZXXWklQEFXA6tBfWaljZbW37w+sqBw=
|
||||||
|
github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
|
||||||
|
github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
|
||||||
|
github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
|
||||||
|
github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
|
||||||
|
github.com/sirupsen/logrus v1.7.0 h1:ShrD1U9pZB12TX0cVy0DtePoCH97K8EtX+mg7ZARUtM=
|
||||||
|
github.com/sirupsen/logrus v1.7.0/go.mod h1:yWOB1SBYBC5VeMP7gHvWumXLIWorT60ONWic61uBYv0=
|
||||||
|
github.com/spf13/pflag v1.0.3 h1:zPAT6CGy6wXeQ7NtTnaTerfKOsV6V6F8agHXFiazDkg=
|
||||||
|
github.com/spf13/pflag v1.0.3/go.mod h1:DYY7MBk1bdzusC3SYhjObp+wFpr4gzcvqqNjLnInEg4=
|
||||||
|
github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
|
||||||
|
golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
|
||||||
|
golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee h1:4yd7jl+vXjalO5ztz6Vc1VADv+S/80LGJmyl1ROJ2AI=
|
||||||
|
golang.org/x/crypto v0.0.0-20201012173705-84dcc777aaee/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
|
||||||
|
golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
|
||||||
|
golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
|
||||||
|
golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||||
|
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037 h1:YyJpGZS1sBuBCzLAR1VEpK193GlqGZbnPFnPV/5Rsb4=
|
||||||
|
golang.org/x/sys v0.0.0-20191026070338-33540a1f6037/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
|
||||||
|
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
|
||||||
|
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
|
||||||
|
gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19 h1:WB265cn5OpO+hK3pikC9hpP1zI/KTwmyMFKloW9eOVc=
|
||||||
|
gopkg.in/validator.v2 v2.0.0-20180514200540-135c24b11c19/go.mod h1:o4V0GXN9/CAmCsvJ0oXYZvrZOe7syiDZSN1GWGZTGzc=
|
||||||
|
gopkg.in/yaml.v2 v2.2.2 h1:ZCJp+EgiOT7lHqUV2J862kp8Qj64Jo6az82+3Td9dZw=
|
||||||
|
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
|
||||||
136
gpg.go
Normal file
136
gpg.go
Normal file
|
|
@ -0,0 +1,136 @@
|
||||||
|
package main
|
||||||
|
|
||||||
|
import (
|
||||||
|
"context"
|
||||||
|
"fmt"
|
||||||
|
"net/http"
|
||||||
|
"net/url"
|
||||||
|
"time"
|
||||||
|
|
||||||
|
"github.com/pkg/errors"
|
||||||
|
log "github.com/sirupsen/logrus"
|
||||||
|
"golang.org/x/crypto/openpgp"
|
||||||
|
"golang.org/x/crypto/openpgp/armor"
|
||||||
|
"golang.org/x/crypto/openpgp/packet"
|
||||||
|
|
||||||
|
mondash "github.com/Luzifer/mondash/client"
|
||||||
|
)
|
||||||
|
|
||||||
|
func getKeyFromKeyserver(ctx context.Context, keyID string) (*openpgp.Entity, error) {
|
||||||
|
uri, err := url.Parse(cfg.KeyServer)
|
||||||
|
if err != nil {
|
||||||
|
return nil, errors.Wrap(err, "parse keyserver lookup url")
|
||||||
|
}
|
||||||
|
|
||||||
|
params := url.Values{
|
||||||
|
"op": []string{"get"},
|
||||||
|
"search": []string{keyID},
|
||||||
|
}
|
||||||
|
|
||||||
|
uri.RawQuery = params.Encode()
|
||||||
|
|
||||||
|
req, _ := http.NewRequestWithContext(ctx, http.MethodGet, uri.String(), nil)
|
||||||
|
resp, err := http.DefaultClient.Do(req)
|
||||||
|
if err != nil {
|
||||||
|
return nil, errors.Wrap(err, "execute http request")
|
||||||
|
}
|
||||||
|
defer resp.Body.Close()
|
||||||
|
|
||||||
|
if resp.StatusCode == http.StatusNotFound {
|
||||||
|
return nil, errors.New("key not found")
|
||||||
|
}
|
||||||
|
|
||||||
|
block, err := armor.Decode(resp.Body)
|
||||||
|
if err != nil {
|
||||||
|
return nil, errors.Wrap(err, "parse armored key")
|
||||||
|
}
|
||||||
|
|
||||||
|
ent, err := openpgp.ReadEntity(packet.NewReader(block.Body))
|
||||||
|
if err != nil {
|
||||||
|
return nil, errors.Wrap(err, "parse entity")
|
||||||
|
}
|
||||||
|
|
||||||
|
return ent, nil
|
||||||
|
}
|
||||||
|
|
||||||
|
func processKey(ctx context.Context, key string) (string, mondash.Status) {
|
||||||
|
logger := log.WithField("key", key)
|
||||||
|
|
||||||
|
e, err := getKeyFromKeyserver(ctx, key)
|
||||||
|
if err != nil {
|
||||||
|
return "Key retrieval failed", mondash.StatusUnknown
|
||||||
|
}
|
||||||
|
|
||||||
|
if l := len(e.Revocations); l > 0 {
|
||||||
|
return fmt.Sprintf("Key has %d revocation signature(s)", l), mondash.StatusCritical
|
||||||
|
}
|
||||||
|
|
||||||
|
var expiry *time.Time
|
||||||
|
for n, id := range e.Identities {
|
||||||
|
logger.Debugf("%s %#v", n, id)
|
||||||
|
|
||||||
|
if id.SelfSignature.KeyLifetimeSecs != nil {
|
||||||
|
idSelfSigExpiry := e.PrimaryKey.CreationTime.Add(time.Duration(*id.SelfSignature.KeyLifetimeSecs) * time.Second)
|
||||||
|
logger.WithField("id", n).Debugf("Selfsig: Identity expires: %s", idSelfSigExpiry)
|
||||||
|
|
||||||
|
if s := checkExpiry(idSelfSigExpiry); s != mondash.StatusOK {
|
||||||
|
return fmt.Sprintf("Identity self-signature for %q has key-expiry in %dh", n, time.Until(idSelfSigExpiry)/time.Hour), s
|
||||||
|
}
|
||||||
|
|
||||||
|
if expiry == nil || expiry.After(idSelfSigExpiry) {
|
||||||
|
expiry = &idSelfSigExpiry
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, sig := range id.Signatures {
|
||||||
|
if sig.KeyLifetimeSecs == nil {
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
|
||||||
|
idSigExpiry := e.PrimaryKey.CreationTime.Add(time.Duration(*sig.KeyLifetimeSecs) * time.Second)
|
||||||
|
logger.WithField("id", n).Debugf("Sig: Identity expires: %s", idSigExpiry)
|
||||||
|
|
||||||
|
if s := checkExpiry(idSigExpiry); s != mondash.StatusOK {
|
||||||
|
return fmt.Sprintf("Identity signature for %q has key-expiry in %dh", n, time.Until(idSigExpiry)/time.Hour), s
|
||||||
|
}
|
||||||
|
|
||||||
|
if expiry == nil || expiry.After(idSigExpiry) {
|
||||||
|
expiry = &idSigExpiry
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
for _, sk := range e.Subkeys {
|
||||||
|
if sk.Sig.KeyLifetimeSecs == nil {
|
||||||
|
continue
|
||||||
|
}
|
||||||
|
|
||||||
|
skExp := sk.PublicKey.CreationTime.Add(time.Duration(*sk.Sig.KeyLifetimeSecs) * time.Second)
|
||||||
|
logger.Debugf("Subkey signature expires: %s", skExp)
|
||||||
|
|
||||||
|
if s := checkExpiry(skExp); s != mondash.StatusOK {
|
||||||
|
return fmt.Sprintf("Subkey signature has key-expiry in %dh", time.Until(skExp)/time.Hour), s
|
||||||
|
}
|
||||||
|
|
||||||
|
if expiry == nil || expiry.After(skExp) {
|
||||||
|
expiry = &skExp
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
if expiry != nil {
|
||||||
|
return fmt.Sprintf("Key looks good (expires in %dh)", time.Until(*expiry)/time.Hour), mondash.StatusOK
|
||||||
|
}
|
||||||
|
|
||||||
|
return "Key looks good (does not expire)", mondash.StatusOK
|
||||||
|
}
|
||||||
|
|
||||||
|
func checkExpiry(ex time.Time) mondash.Status {
|
||||||
|
switch {
|
||||||
|
case time.Until(ex) < cfg.CritAt:
|
||||||
|
return mondash.StatusCritical
|
||||||
|
case time.Until(ex) < cfg.WarnAt:
|
||||||
|
return mondash.StatusWarning
|
||||||
|
default:
|
||||||
|
return mondash.StatusOK
|
||||||
|
}
|
||||||
|
}
|
||||||
99
main.go
Normal file
99
main.go
Normal file
|
|
@ -0,0 +1,99 @@
|
||||||
|
package main
|
||||||
|
|
||||||
|
import (
|
||||||
|
"context"
|
||||||
|
"fmt"
|
||||||
|
"os"
|
||||||
|
"strings"
|
||||||
|
"time"
|
||||||
|
|
||||||
|
log "github.com/sirupsen/logrus"
|
||||||
|
|
||||||
|
mondash "github.com/Luzifer/mondash/client"
|
||||||
|
"github.com/Luzifer/rconfig/v2"
|
||||||
|
)
|
||||||
|
|
||||||
|
var (
|
||||||
|
cfg = struct {
|
||||||
|
CritAt time.Duration `flag:"crit-at,c" default:"168h" description:"Switch state to critical if key expires within X"`
|
||||||
|
Keys []string `flag:"key,k" description:"List of keys to check"`
|
||||||
|
KeyServer string `flag:"key-server" default:"http://keyserver.ubuntu.com/pks/lookup" description:"Lookup path to retrieve the key from"`
|
||||||
|
LogLevel string `flag:"log-level" default:"info" description:"Log level (debug, info, warn, error, fatal)"`
|
||||||
|
MondashBoard string `flag:"mondash-board" default:"" description:"ID of the Mondash board to send to" validate:"nonzero"`
|
||||||
|
MondashMetric string `flag:"mondash-metric" default:"checkgpg" description:"ID of the metric to submit to"`
|
||||||
|
MondashMetricExpiry time.Duration `flag:"mondash-metric-expiry" default:"168h" description:"Time in seconds when to remove the metric if there is no update"`
|
||||||
|
MondashMetricFreshness time.Duration `flag:"mondash-metric-freshness" default:"168h" description:"Time in seconds when to switch to stale state of there is no update"`
|
||||||
|
MondashToken string `flag:"mondash-token" default:"" description:"Token with write access to the board" validate:"nonzero"`
|
||||||
|
VersionAndExit bool `flag:"version" default:"false" description:"Prints current version and exits"`
|
||||||
|
WarnAt time.Duration `flag:"warn-at,w" default:"336h" description:"Switch state to warning if key expires within X"`
|
||||||
|
}{}
|
||||||
|
|
||||||
|
version = "dev"
|
||||||
|
)
|
||||||
|
|
||||||
|
func init() {
|
||||||
|
rconfig.AutoEnv(true)
|
||||||
|
if err := rconfig.ParseAndValidate(&cfg); err != nil {
|
||||||
|
log.Fatalf("Unable to parse commandline options: %s", err)
|
||||||
|
}
|
||||||
|
|
||||||
|
if cfg.VersionAndExit {
|
||||||
|
fmt.Printf("mondash-checkgpg %s\n", version)
|
||||||
|
os.Exit(0)
|
||||||
|
}
|
||||||
|
|
||||||
|
if l, err := log.ParseLevel(cfg.LogLevel); err != nil {
|
||||||
|
log.WithError(err).Fatal("Unable to parse log level")
|
||||||
|
} else {
|
||||||
|
log.SetLevel(l)
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func main() {
|
||||||
|
var (
|
||||||
|
overallStatus = mondash.StatusUnknown
|
||||||
|
statusMessages []string
|
||||||
|
)
|
||||||
|
|
||||||
|
for _, key := range cfg.Keys {
|
||||||
|
msg, state := processKey(context.Background(), key)
|
||||||
|
overallStatus = calcStatus(overallStatus, state)
|
||||||
|
statusMessages = append(statusMessages, fmt.Sprintf("0x%s: %s",
|
||||||
|
key[len(key)-8:],
|
||||||
|
msg,
|
||||||
|
))
|
||||||
|
}
|
||||||
|
|
||||||
|
if err := mondash.New(cfg.MondashBoard, cfg.MondashToken).
|
||||||
|
PostMetric(&mondash.PostMetricInput{
|
||||||
|
MetricID: cfg.MondashMetric,
|
||||||
|
Title: "GPG Key Status",
|
||||||
|
Description: strings.Join(statusMessages, "\n"),
|
||||||
|
Status: overallStatus,
|
||||||
|
Expires: int64(cfg.MondashMetricExpiry / time.Second),
|
||||||
|
Freshness: int64(cfg.MondashMetricFreshness / time.Second),
|
||||||
|
IgnoreMAD: true,
|
||||||
|
HideMAD: true,
|
||||||
|
HideValue: true,
|
||||||
|
}); err != nil {
|
||||||
|
log.WithError(err).Fatal("Unable to submit metric")
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
func calcStatus(o, n mondash.Status) mondash.Status {
|
||||||
|
scores := map[mondash.Status]int{
|
||||||
|
mondash.StatusUnknown: 0,
|
||||||
|
mondash.StatusOK: 1,
|
||||||
|
mondash.StatusWarning: 2, //nolint: gomnd // Makes no sense to extract to a constant
|
||||||
|
mondash.StatusCritical: 3, //nolint: gomnd // Makes no sense to extract to a constant
|
||||||
|
}
|
||||||
|
|
||||||
|
switch {
|
||||||
|
case o == n:
|
||||||
|
return o
|
||||||
|
case scores[o] < scores[n]:
|
||||||
|
return n
|
||||||
|
default:
|
||||||
|
return o
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue