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switch to slog.Logger for logging, for easier reuse of packages by external software

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we don't want external software to include internal details like mlog.
slog.Logger is/will be the standard.

we still have mlog for its helper functions, and its handler that logs in
concise logfmt used by mox.

packages that are not meant for reuse still pass around mlog.Log for
convenience.

we use golang.org/x/exp/slog because we also support the previous Go toolchain
version. with the next Go release, we'll switch to the builtin slog.
This commit is contained in:
Mechiel Lukkien
2023-12-05 13:35:58 +01:00
parent 56b2a9d980
commit 5b20cba50a
150 changed files with 5176 additions and 1898 deletions
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28
dmarc/dmarc.go
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@ -25,9 +25,9 @@ import (
"github.com/mjl-/mox/mlog"
"github.com/mjl-/mox/publicsuffix"
"github.com/mjl-/mox/spf"
)
var xlog = mlog.New("dmarc")
"golang.org/x/exp/slog"
)
var (
metricDMARCVerify = promauto.NewHistogramVec(
@ -99,11 +99,11 @@ type Result struct {
// domain is the domain with the DMARC record.
//
// rauthentic indicates if the DNS results were DNSSEC-verified.
func Lookup(ctx context.Context, resolver dns.Resolver, from dns.Domain) (status Status, domain dns.Domain, record *Record, txt string, rauthentic bool, rerr error) {
log := xlog.WithContext(ctx)
func Lookup(ctx context.Context, elog *slog.Logger, resolver dns.Resolver, from dns.Domain) (status Status, domain dns.Domain, record *Record, txt string, rauthentic bool, rerr error) {
log := mlog.New("dmarc", elog)
start := time.Now()
defer func() {
log.Debugx("dmarc lookup result", rerr, mlog.Field("fromdomain", from), mlog.Field("status", status), mlog.Field("domain", domain), mlog.Field("record", record), mlog.Field("duration", time.Since(start)))
log.Debugx("dmarc lookup result", rerr, slog.Any("fromdomain", from), slog.Any("status", status), slog.Any("domain", domain), slog.Any("record", record), slog.Duration("duration", time.Since(start)))
}()
// ../rfc/7489:859 ../rfc/7489:1370
@ -114,7 +114,7 @@ func Lookup(ctx context.Context, resolver dns.Resolver, from dns.Domain) (status
}
if record == nil {
// ../rfc/7489:761 ../rfc/7489:1377
domain = publicsuffix.Lookup(ctx, from)
domain = publicsuffix.Lookup(ctx, log.Logger, from)
if domain == from {
return StatusNone, domain, nil, txt, authentic, err
}
@ -202,11 +202,11 @@ func lookupReportsRecord(ctx context.Context, resolver dns.Resolver, dmarcDomain
// example in RFC 7489.
//
// authentic indicates if the DNS results were DNSSEC-verified.
func LookupExternalReportsAccepted(ctx context.Context, resolver dns.Resolver, dmarcDomain dns.Domain, extDestDomain dns.Domain) (accepts bool, status Status, records []*Record, txts []string, authentic bool, rerr error) {
log := xlog.WithContext(ctx)
func LookupExternalReportsAccepted(ctx context.Context, elog *slog.Logger, resolver dns.Resolver, dmarcDomain dns.Domain, extDestDomain dns.Domain) (accepts bool, status Status, records []*Record, txts []string, authentic bool, rerr error) {
log := mlog.New("dmarc", elog)
start := time.Now()
defer func() {
log.Debugx("dmarc externalreports result", rerr, mlog.Field("accepts", accepts), mlog.Field("dmarcdomain", dmarcDomain), mlog.Field("extdestdomain", extDestDomain), mlog.Field("records", records), mlog.Field("duration", time.Since(start)))
log.Debugx("dmarc externalreports result", rerr, slog.Bool("accepts", accepts), slog.Any("dmarcdomain", dmarcDomain), slog.Any("extdestdomain", extDestDomain), slog.Any("records", records), slog.Duration("duration", time.Since(start)))
}()
status, records, txts, authentic, rerr = lookupReportsRecord(ctx, resolver, dmarcDomain, extDestDomain)
@ -226,8 +226,8 @@ func LookupExternalReportsAccepted(ctx context.Context, resolver dns.Resolver, d
// against the message (for inclusion in Authentication-Result headers).
//
// useResult indicates if the result should be applied in a policy decision.
func Verify(ctx context.Context, resolver dns.Resolver, from dns.Domain, dkimResults []dkim.Result, spfResult spf.Status, spfIdentity *dns.Domain, applyRandomPercentage bool) (useResult bool, result Result) {
log := xlog.WithContext(ctx)
func Verify(ctx context.Context, elog *slog.Logger, resolver dns.Resolver, from dns.Domain, dkimResults []dkim.Result, spfResult spf.Status, spfIdentity *dns.Domain, applyRandomPercentage bool) (useResult bool, result Result) {
log := mlog.New("dmarc", elog)
start := time.Now()
defer func() {
use := "no"
@ -239,10 +239,10 @@ func Verify(ctx context.Context, resolver dns.Resolver, from dns.Domain, dkimRes
reject = "yes"
}
metricDMARCVerify.WithLabelValues(string(result.Status), reject, use).Observe(float64(time.Since(start)) / float64(time.Second))
log.Debugx("dmarc verify result", result.Err, mlog.Field("fromdomain", from), mlog.Field("dkimresults", dkimResults), mlog.Field("spfresult", spfResult), mlog.Field("status", result.Status), mlog.Field("reject", result.Reject), mlog.Field("use", useResult), mlog.Field("duration", time.Since(start)))
log.Debugx("dmarc verify result", result.Err, slog.Any("fromdomain", from), slog.Any("dkimresults", dkimResults), slog.Any("spfresult", spfResult), slog.Any("status", result.Status), slog.Bool("reject", result.Reject), slog.Bool("use", useResult), slog.Duration("duration", time.Since(start)))
}()
status, recordDomain, record, _, authentic, err := Lookup(ctx, resolver, from)
status, recordDomain, record, _, authentic, err := Lookup(ctx, log.Logger, resolver, from)
if record == nil {
return false, Result{false, status, false, false, recordDomain, record, authentic, err}
}
@ -277,7 +277,7 @@ func Verify(ctx context.Context, resolver dns.Resolver, from dns.Domain, dkimRes
if r, ok := pubsuffixes[name]; ok {
return r
}
r := publicsuffix.Lookup(ctx, name)
r := publicsuffix.Lookup(ctx, log.Logger, name)
pubsuffixes[name] = r
return r
}